diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl')
24 files changed, 18113 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/Kconfig b/drivers/net/wireless/ath/ath6kl/Kconfig new file mode 100644 index 000000000000..fc9f69c1f945 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/Kconfig @@ -0,0 +1,17 @@ +config ATH6KL + tristate "Atheros ath6kl support" + depends on MMC + depends on CFG80211 + select WIRELESS_EXT + select WEXT_PRIV + ---help--- + This module adds support for wireless adapters based on + Atheros AR6003 chipset running over SDIO. If you choose to + build it as a module, it will be called ath6kl. Pls note + that AR6002 and AR6001 are not supported by this driver. + +config ATH6KL_DEBUG + bool "Atheros ath6kl debugging" + depends on ATH6KL + ---help--- + Enables debug support diff --git a/drivers/net/wireless/ath/ath6kl/Makefile b/drivers/net/wireless/ath/ath6kl/Makefile new file mode 100644 index 000000000000..e1bb07ea8e80 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/Makefile @@ -0,0 +1,35 @@ +#------------------------------------------------------------------------------ +# Copyright (c) 2004-2010 Atheros Communications Inc. +# All rights reserved. +# +# +# +# Permission to use, copy, modify, and/or distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +# +# +# +# Author(s): ="Atheros" +#------------------------------------------------------------------------------ + +obj-$(CONFIG_ATH6KL) := ath6kl.o +ath6kl-y += debug.o +ath6kl-y += htc_hif.o +ath6kl-y += htc.o +ath6kl-y += bmi.o +ath6kl-y += cfg80211.o +ath6kl-y += init.o +ath6kl-y += main.o +ath6kl-y += txrx.o +ath6kl-y += wmi.o +ath6kl-y += node.o +ath6kl-y += sdio.o diff --git a/drivers/net/wireless/ath/ath6kl/bmi.c b/drivers/net/wireless/ath/ath6kl/bmi.c new file mode 100644 index 000000000000..84676697d7eb --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/bmi.c @@ -0,0 +1,692 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "core.h" +#include "hif-ops.h" +#include "target.h" +#include "debug.h" + +static int ath6kl_get_bmi_cmd_credits(struct ath6kl *ar) +{ + u32 addr; + unsigned long timeout; + int ret; + + ar->bmi.cmd_credits = 0; + + /* Read the counter register to get the command credits */ + addr = COUNT_DEC_ADDRESS + (HTC_MAILBOX_NUM_MAX + ENDPOINT1) * 4; + + timeout = jiffies + msecs_to_jiffies(BMI_COMMUNICATION_TIMEOUT); + while (time_before(jiffies, timeout) && !ar->bmi.cmd_credits) { + + /* + * Hit the credit counter with a 4-byte access, the first byte + * read will hit the counter and cause a decrement, while the + * remaining 3 bytes has no effect. The rationale behind this + * is to make all HIF accesses 4-byte aligned. + */ + ret = hif_read_write_sync(ar, addr, + (u8 *)&ar->bmi.cmd_credits, 4, + HIF_RD_SYNC_BYTE_INC); + if (ret) { + ath6kl_err("Unable to decrement the command credit count register: %d\n", + ret); + return ret; + } + + /* The counter is only 8 bits. + * Ignore anything in the upper 3 bytes + */ + ar->bmi.cmd_credits &= 0xFF; + } + + if (!ar->bmi.cmd_credits) { + ath6kl_err("bmi communication timeout\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static int ath6kl_bmi_get_rx_lkahd(struct ath6kl *ar, bool need_timeout) +{ + unsigned long timeout; + u32 rx_word = 0; + int ret = 0; + + timeout = jiffies + msecs_to_jiffies(BMI_COMMUNICATION_TIMEOUT); + while ((!need_timeout || time_before(jiffies, timeout)) && !rx_word) { + ret = hif_read_write_sync(ar, RX_LOOKAHEAD_VALID_ADDRESS, + (u8 *)&rx_word, sizeof(rx_word), + HIF_RD_SYNC_BYTE_INC); + if (ret) { + ath6kl_err("unable to read RX_LOOKAHEAD_VALID\n"); + return ret; + } + + /* all we really want is one bit */ + rx_word &= (1 << ENDPOINT1); + } + + if (!rx_word) { + ath6kl_err("bmi_recv_buf FIFO empty\n"); + return -EINVAL; + } + + return ret; +} + +static int ath6kl_bmi_send_buf(struct ath6kl *ar, u8 *buf, u32 len) +{ + int ret; + u32 addr; + + ret = ath6kl_get_bmi_cmd_credits(ar); + if (ret) + return ret; + + addr = ar->mbox_info.htc_addr; + + ret = hif_read_write_sync(ar, addr, buf, len, + HIF_WR_SYNC_BYTE_INC); + if (ret) + ath6kl_err("unable to send the bmi data to the device\n"); + + return ret; +} + +static int ath6kl_bmi_recv_buf(struct ath6kl *ar, + u8 *buf, u32 len, bool want_timeout) +{ + int ret; + u32 addr; + + /* + * During normal bootup, small reads may be required. + * Rather than issue an HIF Read and then wait as the Target + * adds successive bytes to the FIFO, we wait here until + * we know that response data is available. + * + * This allows us to cleanly timeout on an unexpected + * Target failure rather than risk problems at the HIF level. + * In particular, this avoids SDIO timeouts and possibly garbage + * data on some host controllers. And on an interconnect + * such as Compact Flash (as well as some SDIO masters) which + * does not provide any indication on data timeout, it avoids + * a potential hang or garbage response. + * + * Synchronization is more difficult for reads larger than the + * size of the MBOX FIFO (128B), because the Target is unable + * to push the 129th byte of data until AFTER the Host posts an + * HIF Read and removes some FIFO data. So for large reads the + * Host proceeds to post an HIF Read BEFORE all the data is + * actually available to read. Fortunately, large BMI reads do + * not occur in practice -- they're supported for debug/development. + * + * So Host/Target BMI synchronization is divided into these cases: + * CASE 1: length < 4 + * Should not happen + * + * CASE 2: 4 <= length <= 128 + * Wait for first 4 bytes to be in FIFO + * If CONSERVATIVE_BMI_READ is enabled, also wait for + * a BMI command credit, which indicates that the ENTIRE + * response is available in the the FIFO + * + * CASE 3: length > 128 + * Wait for the first 4 bytes to be in FIFO + * + * For most uses, a small timeout should be sufficient and we will + * usually see a response quickly; but there may be some unusual + * (debug) cases of BMI_EXECUTE where we want an larger timeout. + * For now, we use an unbounded busy loop while waiting for + * BMI_EXECUTE. + * + * If BMI_EXECUTE ever needs to support longer-latency execution, + * especially in production, this code needs to be enhanced to sleep + * and yield. Also note that BMI_COMMUNICATION_TIMEOUT is currently + * a function of Host processor speed. + */ + if (len >= 4) { /* NB: Currently, always true */ + ret = ath6kl_bmi_get_rx_lkahd(ar, want_timeout); + if (ret) + return ret; + } + + addr = ar->mbox_info.htc_addr; + ret = hif_read_write_sync(ar, addr, buf, len, + HIF_RD_SYNC_BYTE_INC); + if (ret) { + ath6kl_err("Unable to read the bmi data from the device: %d\n", + ret); + return ret; + } + + return 0; +} + +int ath6kl_bmi_done(struct ath6kl *ar) +{ + int ret; + u32 cid = BMI_DONE; + + if (ar->bmi.done_sent) { + ath6kl_dbg(ATH6KL_DBG_BMI, "bmi done skipped\n"); + return 0; + } + + ar->bmi.done_sent = true; + + ret = ath6kl_bmi_send_buf(ar, (u8 *)&cid, sizeof(cid)); + if (ret) { + ath6kl_err("Unable to send bmi done: %d\n", ret); + return ret; + } + + ath6kl_bmi_cleanup(ar); + + return 0; +} + +int ath6kl_bmi_get_target_info(struct ath6kl *ar, + struct ath6kl_bmi_target_info *targ_info) +{ + int ret; + u32 cid = BMI_GET_TARGET_INFO; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + ret = ath6kl_bmi_send_buf(ar, (u8 *)&cid, sizeof(cid)); + if (ret) { + ath6kl_err("Unable to send get target info: %d\n", ret); + return ret; + } + + ret = ath6kl_bmi_recv_buf(ar, (u8 *)&targ_info->version, + sizeof(targ_info->version), true); + if (ret) { + ath6kl_err("Unable to recv target info: %d\n", ret); + return ret; + } + + if (le32_to_cpu(targ_info->version) == TARGET_VERSION_SENTINAL) { + /* Determine how many bytes are in the Target's targ_info */ + ret = ath6kl_bmi_recv_buf(ar, + (u8 *)&targ_info->byte_count, + sizeof(targ_info->byte_count), + true); + if (ret) { + ath6kl_err("unable to read target info byte count: %d\n", + ret); + return ret; + } + + /* + * The target's targ_info doesn't match the host's targ_info. + * We need to do some backwards compatibility to make this work. + */ + if (le32_to_cpu(targ_info->byte_count) != sizeof(*targ_info)) { + WARN_ON(1); + return -EINVAL; + } + + /* Read the remainder of the targ_info */ + ret = ath6kl_bmi_recv_buf(ar, + ((u8 *)targ_info) + + sizeof(targ_info->byte_count), + sizeof(*targ_info) - + sizeof(targ_info->byte_count), + true); + + if (ret) { + ath6kl_err("Unable to read target info (%d bytes): %d\n", + targ_info->byte_count, ret); + return ret; + } + } + + ath6kl_dbg(ATH6KL_DBG_BMI, "target info (ver: 0x%x type: 0x%x)\n", + targ_info->version, targ_info->type); + + return 0; +} + +int ath6kl_bmi_read(struct ath6kl *ar, u32 addr, u8 *buf, u32 len) +{ + u32 cid = BMI_READ_MEMORY; + int ret; + u32 offset; + u32 len_remain, rx_len; + u16 size; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + size = BMI_DATASZ_MAX + sizeof(cid) + sizeof(addr) + sizeof(len); + if (size > MAX_BMI_CMDBUF_SZ) { + WARN_ON(1); + return -EINVAL; + } + memset(ar->bmi.cmd_buf, 0, size); + + ath6kl_dbg(ATH6KL_DBG_BMI, + "bmi read memory: device: addr: 0x%x, len: %d\n", + addr, len); + + len_remain = len; + + while (len_remain) { + rx_len = (len_remain < BMI_DATASZ_MAX) ? + len_remain : BMI_DATASZ_MAX; + offset = 0; + memcpy(&(ar->bmi.cmd_buf[offset]), &cid, sizeof(cid)); + offset += sizeof(cid); + memcpy(&(ar->bmi.cmd_buf[offset]), &addr, sizeof(addr)); + offset += sizeof(addr); + memcpy(&(ar->bmi.cmd_buf[offset]), &rx_len, sizeof(rx_len)); + offset += sizeof(len); + + ret = ath6kl_bmi_send_buf(ar, ar->bmi.cmd_buf, offset); + if (ret) { + ath6kl_err("Unable to write to the device: %d\n", + ret); + return ret; + } + ret = ath6kl_bmi_recv_buf(ar, ar->bmi.cmd_buf, rx_len, true); + if (ret) { + ath6kl_err("Unable to read from the device: %d\n", + ret); + return ret; + } + memcpy(&buf[len - len_remain], ar->bmi.cmd_buf, rx_len); + len_remain -= rx_len; addr += rx_len; + } + + return 0; +} + +int ath6kl_bmi_write(struct ath6kl *ar, u32 addr, u8 *buf, u32 len) +{ + u32 cid = BMI_WRITE_MEMORY; + int ret; + u32 offset; + u32 len_remain, tx_len; + const u32 header = sizeof(cid) + sizeof(addr) + sizeof(len); + u8 aligned_buf[BMI_DATASZ_MAX]; + u8 *src; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + if ((BMI_DATASZ_MAX + header) > MAX_BMI_CMDBUF_SZ) { + WARN_ON(1); + return -EINVAL; + } + + memset(ar->bmi.cmd_buf, 0, BMI_DATASZ_MAX + header); + + ath6kl_dbg(ATH6KL_DBG_BMI, + "bmi write memory: addr: 0x%x, len: %d\n", addr, len); + + len_remain = len; + while (len_remain) { + src = &buf[len - len_remain]; + + if (len_remain < (BMI_DATASZ_MAX - header)) { + if (len_remain & 3) { + /* align it with 4 bytes */ + len_remain = len_remain + + (4 - (len_remain & 3)); + memcpy(aligned_buf, src, len_remain); + src = aligned_buf; + } + tx_len = len_remain; + } else { + tx_len = (BMI_DATASZ_MAX - header); + } + + offset = 0; + memcpy(&(ar->bmi.cmd_buf[offset]), &cid, sizeof(cid)); + offset += sizeof(cid); + memcpy(&(ar->bmi.cmd_buf[offset]), &addr, sizeof(addr)); + offset += sizeof(addr); + memcpy(&(ar->bmi.cmd_buf[offset]), &tx_len, sizeof(tx_len)); + offset += sizeof(tx_len); + memcpy(&(ar->bmi.cmd_buf[offset]), src, tx_len); + offset += tx_len; + + ret = ath6kl_bmi_send_buf(ar, ar->bmi.cmd_buf, offset); + if (ret) { + ath6kl_err("Unable to write to the device: %d\n", + ret); + return ret; + } + len_remain -= tx_len; addr += tx_len; + } + + return 0; +} + +int ath6kl_bmi_execute(struct ath6kl *ar, u32 addr, u32 *param) +{ + u32 cid = BMI_EXECUTE; + int ret; + u32 offset; + u16 size; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + size = sizeof(cid) + sizeof(addr) + sizeof(param); + if (size > MAX_BMI_CMDBUF_SZ) { + WARN_ON(1); + return -EINVAL; + } + memset(ar->bmi.cmd_buf, 0, size); + + ath6kl_dbg(ATH6KL_DBG_BMI, "bmi execute: addr: 0x%x, param: %d)\n", + addr, *param); + + offset = 0; + memcpy(&(ar->bmi.cmd_buf[offset]), &cid, sizeof(cid)); + offset += sizeof(cid); + memcpy(&(ar->bmi.cmd_buf[offset]), &addr, sizeof(addr)); + offset += sizeof(addr); + memcpy(&(ar->bmi.cmd_buf[offset]), param, sizeof(*param)); + offset += sizeof(*param); + + ret = ath6kl_bmi_send_buf(ar, ar->bmi.cmd_buf, offset); + if (ret) { + ath6kl_err("Unable to write to the device: %d\n", ret); + return ret; + } + + ret = ath6kl_bmi_recv_buf(ar, ar->bmi.cmd_buf, sizeof(*param), false); + if (ret) { + ath6kl_err("Unable to read from the device: %d\n", ret); + return ret; + } + + memcpy(param, ar->bmi.cmd_buf, sizeof(*param)); + + return 0; +} + +int ath6kl_bmi_set_app_start(struct ath6kl *ar, u32 addr) +{ + u32 cid = BMI_SET_APP_START; + int ret; + u32 offset; + u16 size; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + size = sizeof(cid) + sizeof(addr); + if (size > MAX_BMI_CMDBUF_SZ) { + WARN_ON(1); + return -EINVAL; + } + memset(ar->bmi.cmd_buf, 0, size); + + ath6kl_dbg(ATH6KL_DBG_BMI, "bmi set app start: addr: 0x%x\n", addr); + + offset = 0; + memcpy(&(ar->bmi.cmd_buf[offset]), &cid, sizeof(cid)); + offset += sizeof(cid); + memcpy(&(ar->bmi.cmd_buf[offset]), &addr, sizeof(addr)); + offset += sizeof(addr); + + ret = ath6kl_bmi_send_buf(ar, ar->bmi.cmd_buf, offset); + if (ret) { + ath6kl_err("Unable to write to the device: %d\n", ret); + return ret; + } + + return 0; +} + +int ath6kl_bmi_reg_read(struct ath6kl *ar, u32 addr, u32 *param) +{ + u32 cid = BMI_READ_SOC_REGISTER; + int ret; + u32 offset; + u16 size; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + size = sizeof(cid) + sizeof(addr); + if (size > MAX_BMI_CMDBUF_SZ) { + WARN_ON(1); + return -EINVAL; + } + memset(ar->bmi.cmd_buf, 0, size); + + ath6kl_dbg(ATH6KL_DBG_BMI, "bmi read SOC reg: addr: 0x%x\n", addr); + + offset = 0; + memcpy(&(ar->bmi.cmd_buf[offset]), &cid, sizeof(cid)); + offset += sizeof(cid); + memcpy(&(ar->bmi.cmd_buf[offset]), &addr, sizeof(addr)); + offset += sizeof(addr); + + ret = ath6kl_bmi_send_buf(ar, ar->bmi.cmd_buf, offset); + if (ret) { + ath6kl_err("Unable to write to the device: %d\n", ret); + return ret; + } + + ret = ath6kl_bmi_recv_buf(ar, ar->bmi.cmd_buf, sizeof(*param), true); + if (ret) { + ath6kl_err("Unable to read from the device: %d\n", ret); + return ret; + } + memcpy(param, ar->bmi.cmd_buf, sizeof(*param)); + + return 0; +} + +int ath6kl_bmi_reg_write(struct ath6kl *ar, u32 addr, u32 param) +{ + u32 cid = BMI_WRITE_SOC_REGISTER; + int ret; + u32 offset; + u16 size; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + size = sizeof(cid) + sizeof(addr) + sizeof(param); + if (size > MAX_BMI_CMDBUF_SZ) { + WARN_ON(1); + return -EINVAL; + } + memset(ar->bmi.cmd_buf, 0, size); + + ath6kl_dbg(ATH6KL_DBG_BMI, + "bmi write SOC reg: addr: 0x%x, param: %d\n", + addr, param); + + offset = 0; + memcpy(&(ar->bmi.cmd_buf[offset]), &cid, sizeof(cid)); + offset += sizeof(cid); + memcpy(&(ar->bmi.cmd_buf[offset]), &addr, sizeof(addr)); + offset += sizeof(addr); + memcpy(&(ar->bmi.cmd_buf[offset]), ¶m, sizeof(param)); + offset += sizeof(param); + + ret = ath6kl_bmi_send_buf(ar, ar->bmi.cmd_buf, offset); + if (ret) { + ath6kl_err("Unable to write to the device: %d\n", ret); + return ret; + } + + return 0; +} + +int ath6kl_bmi_lz_data(struct ath6kl *ar, u8 *buf, u32 len) +{ + u32 cid = BMI_LZ_DATA; + int ret; + u32 offset; + u32 len_remain, tx_len; + const u32 header = sizeof(cid) + sizeof(len); + u16 size; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + size = BMI_DATASZ_MAX + header; + if (size > MAX_BMI_CMDBUF_SZ) { + WARN_ON(1); + return -EINVAL; + } + memset(ar->bmi.cmd_buf, 0, size); + + ath6kl_dbg(ATH6KL_DBG_BMI, "bmi send LZ data: len: %d)\n", + len); + + len_remain = len; + while (len_remain) { + tx_len = (len_remain < (BMI_DATASZ_MAX - header)) ? + len_remain : (BMI_DATASZ_MAX - header); + + offset = 0; + memcpy(&(ar->bmi.cmd_buf[offset]), &cid, sizeof(cid)); + offset += sizeof(cid); + memcpy(&(ar->bmi.cmd_buf[offset]), &tx_len, sizeof(tx_len)); + offset += sizeof(tx_len); + memcpy(&(ar->bmi.cmd_buf[offset]), &buf[len - len_remain], + tx_len); + offset += tx_len; + + ret = ath6kl_bmi_send_buf(ar, ar->bmi.cmd_buf, offset); + if (ret) { + ath6kl_err("Unable to write to the device: %d\n", + ret); + return ret; + } + + len_remain -= tx_len; + } + + return 0; +} + +int ath6kl_bmi_lz_stream_start(struct ath6kl *ar, u32 addr) +{ + u32 cid = BMI_LZ_STREAM_START; + int ret; + u32 offset; + u16 size; + + if (ar->bmi.done_sent) { + ath6kl_err("bmi done sent already, cmd %d disallowed\n", cid); + return -EACCES; + } + + size = sizeof(cid) + sizeof(addr); + if (size > MAX_BMI_CMDBUF_SZ) { + WARN_ON(1); + return -EINVAL; + } + memset(ar->bmi.cmd_buf, 0, size); + + ath6kl_dbg(ATH6KL_DBG_BMI, + "bmi LZ stream start: addr: 0x%x)\n", + addr); + + offset = 0; + memcpy(&(ar->bmi.cmd_buf[offset]), &cid, sizeof(cid)); + offset += sizeof(cid); + memcpy(&(ar->bmi.cmd_buf[offset]), &addr, sizeof(addr)); + offset += sizeof(addr); + + ret = ath6kl_bmi_send_buf(ar, ar->bmi.cmd_buf, offset); + if (ret) { + ath6kl_err("Unable to start LZ stream to the device: %d\n", + ret); + return ret; + } + + return 0; +} + +int ath6kl_bmi_fast_download(struct ath6kl *ar, u32 addr, u8 *buf, u32 len) +{ + int ret; + u32 last_word = 0; + u32 last_word_offset = len & ~0x3; + u32 unaligned_bytes = len & 0x3; + + ret = ath6kl_bmi_lz_stream_start(ar, addr); + if (ret) + return ret; + + if (unaligned_bytes) { + /* copy the last word into a zero padded buffer */ + memcpy(&last_word, &buf[last_word_offset], unaligned_bytes); + } + + ret = ath6kl_bmi_lz_data(ar, buf, last_word_offset); + if (ret) + return ret; + + if (unaligned_bytes) + ret = ath6kl_bmi_lz_data(ar, (u8 *)&last_word, 4); + + if (!ret) { + /* Close compressed stream and open a new (fake) one. + * This serves mainly to flush Target caches. */ + ret = ath6kl_bmi_lz_stream_start(ar, 0x00); + } + return ret; +} + +int ath6kl_bmi_init(struct ath6kl *ar) +{ + ar->bmi.cmd_buf = kzalloc(MAX_BMI_CMDBUF_SZ, GFP_ATOMIC); + + if (!ar->bmi.cmd_buf) + return -ENOMEM; + + return 0; +} + +void ath6kl_bmi_cleanup(struct ath6kl *ar) +{ + kfree(ar->bmi.cmd_buf); + ar->bmi.cmd_buf = NULL; +} diff --git a/drivers/net/wireless/ath/ath6kl/bmi.h b/drivers/net/wireless/ath/ath6kl/bmi.h new file mode 100644 index 000000000000..83546d76d979 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/bmi.h @@ -0,0 +1,250 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef BMI_H +#define BMI_H + +/* + * Bootloader Messaging Interface (BMI) + * + * BMI is a very simple messaging interface used during initialization + * to read memory, write memory, execute code, and to define an + * application entry PC. + * + * It is used to download an application to ATH6KL, to provide + * patches to code that is already resident on ATH6KL, and generally + * to examine and modify state. The Host has an opportunity to use + * BMI only once during bootup. Once the Host issues a BMI_DONE + * command, this opportunity ends. + * + * The Host writes BMI requests to mailbox0, and reads BMI responses + * from mailbox0. BMI requests all begin with a command + * (see below for specific commands), and are followed by + * command-specific data. + * + * Flow control: + * The Host can only issue a command once the Target gives it a + * "BMI Command Credit", using ATH6KL Counter #4. As soon as the + * Target has completed a command, it issues another BMI Command + * Credit (so the Host can issue the next command). + * + * BMI handles all required Target-side cache flushing. + */ + +#define MAX_BMI_CMDBUF_SZ (BMI_DATASZ_MAX + \ + (sizeof(u32) * 3 /* cmd + addr + len */)) + +/* Maximum data size used for BMI transfers */ +#define BMI_DATASZ_MAX 256 + +/* BMI Commands */ + +#define BMI_NO_COMMAND 0 + +#define BMI_DONE 1 +/* + * Semantics: Host is done using BMI + * Request format: + * u32 command (BMI_DONE) + * Response format: none + */ + +#define BMI_READ_MEMORY 2 +/* + * Semantics: Host reads ATH6KL memory + * Request format: + * u32 command (BMI_READ_MEMORY) + * u32 address + * u32 length, at most BMI_DATASZ_MAX + * Response format: + * u8 data[length] + */ + +#define BMI_WRITE_MEMORY 3 +/* + * Semantics: Host writes ATH6KL memory + * Request format: + * u32 command (BMI_WRITE_MEMORY) + * u32 address + * u32 length, at most BMI_DATASZ_MAX + * u8 data[length] + * Response format: none + */ + +#define BMI_EXECUTE 4 +/* + * Semantics: Causes ATH6KL to execute code + * Request format: + * u32 command (BMI_EXECUTE) + * u32 address + * u32 parameter + * Response format: + * u32 return value + */ + +#define BMI_SET_APP_START 5 +/* + * Semantics: Set Target application starting address + * Request format: + * u32 command (BMI_SET_APP_START) + * u32 address + * Response format: none + */ + +#define BMI_READ_SOC_REGISTER 6 +/* + * Semantics: Read a 32-bit Target SOC register. + * Request format: + * u32 command (BMI_READ_REGISTER) + * u32 address + * Response format: + * u32 value + */ + +#define BMI_WRITE_SOC_REGISTER 7 +/* + * Semantics: Write a 32-bit Target SOC register. + * Request format: + * u32 command (BMI_WRITE_REGISTER) + * u32 address + * u32 value + * + * Response format: none + */ + +#define BMI_GET_TARGET_ID 8 +#define BMI_GET_TARGET_INFO 8 +/* + * Semantics: Fetch the 4-byte Target information + * Request format: + * u32 command (BMI_GET_TARGET_ID/INFO) + * Response format1 (old firmware): + * u32 TargetVersionID + * Response format2 (newer firmware): + * u32 TARGET_VERSION_SENTINAL + * struct bmi_target_info; + */ + +#define TARGET_VERSION_SENTINAL 0xffffffff +#define TARGET_TYPE_AR6003 3 + +#define BMI_ROMPATCH_INSTALL 9 +/* + * Semantics: Install a ROM Patch. + * Request format: + * u32 command (BMI_ROMPATCH_INSTALL) + * u32 Target ROM Address + * u32 Target RAM Address or Value (depending on Target Type) + * u32 Size, in bytes + * u32 Activate? 1-->activate; + * 0-->install but do not activate + * Response format: + * u32 PatchID + */ + +#define BMI_ROMPATCH_UNINSTALL 10 +/* + * Semantics: Uninstall a previously-installed ROM Patch, + * automatically deactivating, if necessary. + * Request format: + * u32 command (BMI_ROMPATCH_UNINSTALL) + * u32 PatchID + * + * Response format: none + */ + +#define BMI_ROMPATCH_ACTIVATE 11 +/* + * Semantics: Activate a list of previously-installed ROM Patches. + * Request format: + * u32 command (BMI_ROMPATCH_ACTIVATE) + * u32 rompatch_count + * u32 PatchID[rompatch_count] + * + * Response format: none + */ + +#define BMI_ROMPATCH_DEACTIVATE 12 +/* + * Semantics: Deactivate a list of active ROM Patches. + * Request format: + * u32 command (BMI_ROMPATCH_DEACTIVATE) + * u32 rompatch_count + * u32 PatchID[rompatch_count] + * + * Response format: none + */ + + +#define BMI_LZ_STREAM_START 13 +/* + * Semantics: Begin an LZ-compressed stream of input + * which is to be uncompressed by the Target to an + * output buffer at address. The output buffer must + * be sufficiently large to hold the uncompressed + * output from the compressed input stream. This BMI + * command should be followed by a series of 1 or more + * BMI_LZ_DATA commands. + * u32 command (BMI_LZ_STREAM_START) + * u32 address + * Note: Not supported on all versions of ROM firmware. + */ + +#define BMI_LZ_DATA 14 +/* + * Semantics: Host writes ATH6KL memory with LZ-compressed + * data which is uncompressed by the Target. This command + * must be preceded by a BMI_LZ_STREAM_START command. A series + * of BMI_LZ_DATA commands are considered part of a single + * input stream until another BMI_LZ_STREAM_START is issued. + * Request format: + * u32 command (BMI_LZ_DATA) + * u32 length (of compressed data), + * at most BMI_DATASZ_MAX + * u8 CompressedData[length] + * Response format: none + * Note: Not supported on all versions of ROM firmware. + */ + +#define BMI_COMMUNICATION_TIMEOUT 1000 /* in msec */ + +struct ath6kl; +struct ath6kl_bmi_target_info { + __le32 byte_count; /* size of this structure */ + __le32 version; /* target version id */ + __le32 type; /* target type */ +} __packed; + +int ath6kl_bmi_init(struct ath6kl *ar); +void ath6kl_bmi_cleanup(struct ath6kl *ar); +int ath6kl_bmi_done(struct ath6kl *ar); +int ath6kl_bmi_get_target_info(struct ath6kl *ar, + struct ath6kl_bmi_target_info *targ_info); +int ath6kl_bmi_read(struct ath6kl *ar, u32 addr, u8 *buf, u32 len); +int ath6kl_bmi_write(struct ath6kl *ar, u32 addr, u8 *buf, u32 len); +int ath6kl_bmi_execute(struct ath6kl *ar, + u32 addr, u32 *param); +int ath6kl_bmi_set_app_start(struct ath6kl *ar, + u32 addr); +int ath6kl_bmi_reg_read(struct ath6kl *ar, u32 addr, u32 *param); +int ath6kl_bmi_reg_write(struct ath6kl *ar, u32 addr, u32 param); +int ath6kl_bmi_lz_data(struct ath6kl *ar, + u8 *buf, u32 len); +int ath6kl_bmi_lz_stream_start(struct ath6kl *ar, + u32 addr); +int ath6kl_bmi_fast_download(struct ath6kl *ar, + u32 addr, u8 *buf, u32 len); +#endif diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c new file mode 100644 index 000000000000..4284a41ff775 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c @@ -0,0 +1,1538 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "core.h" +#include "cfg80211.h" +#include "debug.h" + +#define RATETAB_ENT(_rate, _rateid, _flags) { \ + .bitrate = (_rate), \ + .flags = (_flags), \ + .hw_value = (_rateid), \ +} + +#define CHAN2G(_channel, _freq, _flags) { \ + .band = IEEE80211_BAND_2GHZ, \ + .hw_value = (_channel), \ + .center_freq = (_freq), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +#define CHAN5G(_channel, _flags) { \ + .band = IEEE80211_BAND_5GHZ, \ + .hw_value = (_channel), \ + .center_freq = 5000 + (5 * (_channel)), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +static struct ieee80211_rate ath6kl_rates[] = { + RATETAB_ENT(10, 0x1, 0), + RATETAB_ENT(20, 0x2, 0), + RATETAB_ENT(55, 0x4, 0), + RATETAB_ENT(110, 0x8, 0), + RATETAB_ENT(60, 0x10, 0), + RATETAB_ENT(90, 0x20, 0), + RATETAB_ENT(120, 0x40, 0), + RATETAB_ENT(180, 0x80, 0), + RATETAB_ENT(240, 0x100, 0), + RATETAB_ENT(360, 0x200, 0), + RATETAB_ENT(480, 0x400, 0), + RATETAB_ENT(540, 0x800, 0), +}; + +#define ath6kl_a_rates (ath6kl_rates + 4) +#define ath6kl_a_rates_size 8 +#define ath6kl_g_rates (ath6kl_rates + 0) +#define ath6kl_g_rates_size 12 + +static struct ieee80211_channel ath6kl_2ghz_channels[] = { + CHAN2G(1, 2412, 0), + CHAN2G(2, 2417, 0), + CHAN2G(3, 2422, 0), + CHAN2G(4, 2427, 0), + CHAN2G(5, 2432, 0), + CHAN2G(6, 2437, 0), + CHAN2G(7, 2442, 0), + CHAN2G(8, 2447, 0), + CHAN2G(9, 2452, 0), + CHAN2G(10, 2457, 0), + CHAN2G(11, 2462, 0), + CHAN2G(12, 2467, 0), + CHAN2G(13, 2472, 0), + CHAN2G(14, 2484, 0), +}; + +static struct ieee80211_channel ath6kl_5ghz_a_channels[] = { + CHAN5G(34, 0), CHAN5G(36, 0), + CHAN5G(38, 0), CHAN5G(40, 0), + CHAN5G(42, 0), CHAN5G(44, 0), + CHAN5G(46, 0), CHAN5G(48, 0), + CHAN5G(52, 0), CHAN5G(56, 0), + CHAN5G(60, 0), CHAN5G(64, 0), + CHAN5G(100, 0), CHAN5G(104, 0), + CHAN5G(108, 0), CHAN5G(112, 0), + CHAN5G(116, 0), CHAN5G(120, 0), + CHAN5G(124, 0), CHAN5G(128, 0), + CHAN5G(132, 0), CHAN5G(136, 0), + CHAN5G(140, 0), CHAN5G(149, 0), + CHAN5G(153, 0), CHAN5G(157, 0), + CHAN5G(161, 0), CHAN5G(165, 0), + CHAN5G(184, 0), CHAN5G(188, 0), + CHAN5G(192, 0), CHAN5G(196, 0), + CHAN5G(200, 0), CHAN5G(204, 0), + CHAN5G(208, 0), CHAN5G(212, 0), + CHAN5G(216, 0), +}; + +static struct ieee80211_supported_band ath6kl_band_2ghz = { + .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels), + .channels = ath6kl_2ghz_channels, + .n_bitrates = ath6kl_g_rates_size, + .bitrates = ath6kl_g_rates, +}; + +static struct ieee80211_supported_band ath6kl_band_5ghz = { + .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels), + .channels = ath6kl_5ghz_a_channels, + .n_bitrates = ath6kl_a_rates_size, + .bitrates = ath6kl_a_rates, +}; + +static int ath6kl_set_wpa_version(struct ath6kl *ar, + enum nl80211_wpa_versions wpa_version) +{ + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version); + + if (!wpa_version) { + ar->auth_mode = NONE_AUTH; + } else if (wpa_version & NL80211_WPA_VERSION_2) { + ar->auth_mode = WPA2_AUTH; + } else if (wpa_version & NL80211_WPA_VERSION_1) { + ar->auth_mode = WPA_AUTH; + } else { + ath6kl_err("%s: %u not supported\n", __func__, wpa_version); + return -ENOTSUPP; + } + + return 0; +} + +static int ath6kl_set_auth_type(struct ath6kl *ar, + enum nl80211_auth_type auth_type) +{ + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type); + + switch (auth_type) { + case NL80211_AUTHTYPE_OPEN_SYSTEM: + ar->dot11_auth_mode = OPEN_AUTH; + break; + case NL80211_AUTHTYPE_SHARED_KEY: + ar->dot11_auth_mode = SHARED_AUTH; + break; + case NL80211_AUTHTYPE_NETWORK_EAP: + ar->dot11_auth_mode = LEAP_AUTH; + break; + + case NL80211_AUTHTYPE_AUTOMATIC: + ar->dot11_auth_mode = OPEN_AUTH; + ar->auto_auth_stage = AUTH_OPEN_IN_PROGRESS; + break; + + default: + ath6kl_err("%s: 0x%x not spported\n", __func__, auth_type); + return -ENOTSUPP; + } + + return 0; +} + +static int ath6kl_set_cipher(struct ath6kl *ar, u32 cipher, bool ucast) +{ + u8 *ar_cipher = ucast ? &ar->prwise_crypto : &ar->grp_crypto; + u8 *ar_cipher_len = ucast ? &ar->prwise_crypto_len : &ar->grp_crpto_len; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n", + __func__, cipher, ucast); + + switch (cipher) { + case 0: + /* our own hack to use value 0 as no crypto used */ + *ar_cipher = NONE_CRYPT; + *ar_cipher_len = 0; + break; + case WLAN_CIPHER_SUITE_WEP40: + *ar_cipher = WEP_CRYPT; + *ar_cipher_len = 5; + break; + case WLAN_CIPHER_SUITE_WEP104: + *ar_cipher = WEP_CRYPT; + *ar_cipher_len = 13; + break; + case WLAN_CIPHER_SUITE_TKIP: + *ar_cipher = TKIP_CRYPT; + *ar_cipher_len = 0; + break; + case WLAN_CIPHER_SUITE_CCMP: + *ar_cipher = AES_CRYPT; + *ar_cipher_len = 0; + break; + default: + ath6kl_err("cipher 0x%x not supported\n", cipher); + return -ENOTSUPP; + } + + return 0; +} + +static void ath6kl_set_key_mgmt(struct ath6kl *ar, u32 key_mgmt) +{ + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt); + + if (key_mgmt == WLAN_AKM_SUITE_PSK) { + if (ar->auth_mode == WPA_AUTH) + ar->auth_mode = WPA_PSK_AUTH; + else if (ar->auth_mode == WPA2_AUTH) + ar->auth_mode = WPA2_PSK_AUTH; + } else if (key_mgmt != WLAN_AKM_SUITE_8021X) { + ar->auth_mode = NONE_AUTH; + } +} + +static bool ath6kl_cfg80211_ready(struct ath6kl *ar) +{ + if (!test_bit(WMI_READY, &ar->flag)) { + ath6kl_err("wmi is not ready\n"); + return false; + } + + if (ar->wlan_state == WLAN_DISABLED) { + ath6kl_err("wlan disabled\n"); + return false; + } + + return true; +} + +static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_connect_params *sme) +{ + struct ath6kl *ar = ath6kl_priv(dev); + int status; + + ar->sme_state = SME_CONNECTING; + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { + ath6kl_err("destroy in progress\n"); + return -EBUSY; + } + + if (test_bit(SKIP_SCAN, &ar->flag) && + ((sme->channel && sme->channel->center_freq == 0) || + (sme->bssid && is_zero_ether_addr(sme->bssid)))) { + ath6kl_err("SkipScan: channel or bssid invalid\n"); + return -EINVAL; + } + + if (down_interruptible(&ar->sem)) { + ath6kl_err("busy, couldn't get access\n"); + return -ERESTARTSYS; + } + + if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { + ath6kl_err("busy, destroy in progress\n"); + up(&ar->sem); + return -EBUSY; + } + + if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) { + /* + * sleep until the command queue drains + */ + wait_event_interruptible_timeout(ar->event_wq, + ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0, + WMI_TIMEOUT); + if (signal_pending(current)) { + ath6kl_err("cmd queue drain timeout\n"); + up(&ar->sem); + return -EINTR; + } + } + + if (test_bit(CONNECTED, &ar->flag) && + ar->ssid_len == sme->ssid_len && + !memcmp(ar->ssid, sme->ssid, ar->ssid_len)) { + ar->reconnect_flag = true; + status = ath6kl_wmi_reconnect_cmd(ar->wmi, ar->req_bssid, + ar->ch_hint); + + up(&ar->sem); + if (status) { + ath6kl_err("wmi_reconnect_cmd failed\n"); + return -EIO; + } + return 0; + } else if (ar->ssid_len == sme->ssid_len && + !memcmp(ar->ssid, sme->ssid, ar->ssid_len)) { + ath6kl_disconnect(ar); + } + + memset(ar->ssid, 0, sizeof(ar->ssid)); + ar->ssid_len = sme->ssid_len; + memcpy(ar->ssid, sme->ssid, sme->ssid_len); + + if (sme->channel) + ar->ch_hint = sme->channel->center_freq; + + memset(ar->req_bssid, 0, sizeof(ar->req_bssid)); + if (sme->bssid && !is_broadcast_ether_addr(sme->bssid)) + memcpy(ar->req_bssid, sme->bssid, sizeof(ar->req_bssid)); + + ath6kl_set_wpa_version(ar, sme->crypto.wpa_versions); + + status = ath6kl_set_auth_type(ar, sme->auth_type); + if (status) { + up(&ar->sem); + return status; + } + + if (sme->crypto.n_ciphers_pairwise) + ath6kl_set_cipher(ar, sme->crypto.ciphers_pairwise[0], true); + else + ath6kl_set_cipher(ar, 0, true); + + ath6kl_set_cipher(ar, sme->crypto.cipher_group, false); + + if (sme->crypto.n_akm_suites) + ath6kl_set_key_mgmt(ar, sme->crypto.akm_suites[0]); + + if ((sme->key_len) && + (ar->auth_mode == NONE_AUTH) && (ar->prwise_crypto == WEP_CRYPT)) { + struct ath6kl_key *key = NULL; + + if (sme->key_idx < WMI_MIN_KEY_INDEX || + sme->key_idx > WMI_MAX_KEY_INDEX) { + ath6kl_err("key index %d out of bounds\n", + sme->key_idx); + up(&ar->sem); + return -ENOENT; + } + + key = &ar->keys[sme->key_idx]; + key->key_len = sme->key_len; + memcpy(key->key, sme->key, key->key_len); + key->cipher = ar->prwise_crypto; + ar->def_txkey_index = sme->key_idx; + + ath6kl_wmi_addkey_cmd(ar->wmi, sme->key_idx, + ar->prwise_crypto, + GROUP_USAGE | TX_USAGE, + key->key_len, + NULL, + key->key, KEY_OP_INIT_VAL, NULL, + NO_SYNC_WMIFLAG); + } + + if (!ar->usr_bss_filter) { + if (ath6kl_wmi_bssfilter_cmd(ar->wmi, ALL_BSS_FILTER, 0) != 0) { + ath6kl_err("couldn't set bss filtering\n"); + up(&ar->sem); + return -EIO; + } + } + + ar->nw_type = ar->next_mode; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: connect called with authmode %d dot11 auth %d" + " PW crypto %d PW crypto len %d GRP crypto %d" + " GRP crypto len %d channel hint %u\n", + __func__, + ar->auth_mode, ar->dot11_auth_mode, ar->prwise_crypto, + ar->prwise_crypto_len, ar->grp_crypto, + ar->grp_crpto_len, ar->ch_hint); + + ar->reconnect_flag = 0; + status = ath6kl_wmi_connect_cmd(ar->wmi, ar->nw_type, + ar->dot11_auth_mode, ar->auth_mode, + ar->prwise_crypto, + ar->prwise_crypto_len, + ar->grp_crypto, ar->grp_crpto_len, + ar->ssid_len, ar->ssid, + ar->req_bssid, ar->ch_hint, + ar->connect_ctrl_flags); + + up(&ar->sem); + + if (status == -EINVAL) { + memset(ar->ssid, 0, sizeof(ar->ssid)); + ar->ssid_len = 0; + ath6kl_err("invalid request\n"); + return -ENOENT; + } else if (status) { + ath6kl_err("ath6kl_wmi_connect_cmd failed\n"); + return -EIO; + } + + if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) && + ((ar->auth_mode == WPA_PSK_AUTH) + || (ar->auth_mode == WPA2_PSK_AUTH))) { + mod_timer(&ar->disconnect_timer, + jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL)); + } + + ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD; + set_bit(CONNECT_PEND, &ar->flag); + + return 0; +} + +void ath6kl_cfg80211_connect_event(struct ath6kl *ar, u16 channel, + u8 *bssid, u16 listen_intvl, + u16 beacon_intvl, + enum network_type nw_type, + u8 beacon_ie_len, u8 assoc_req_len, + u8 assoc_resp_len, u8 *assoc_info) +{ + u16 size = 0; + u16 capability = 0; + struct cfg80211_bss *bss = NULL; + struct ieee80211_mgmt *mgmt = NULL; + struct ieee80211_channel *ibss_ch = NULL; + s32 signal = 50 * 100; + u8 ie_buf_len = 0; + unsigned char ie_buf[256]; + unsigned char *ptr_ie_buf = ie_buf; + unsigned char *ieeemgmtbuf = NULL; + u8 source_mac[ETH_ALEN]; + u16 capa_mask; + u16 capa_val; + + /* capinfo + listen interval */ + u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16); + + /* capinfo + status code + associd */ + u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16); + + u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset; + u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len + + assoc_resp_ie_offset; + + assoc_req_len -= assoc_req_ie_offset; + assoc_resp_len -= assoc_resp_ie_offset; + + ar->auto_auth_stage = AUTH_IDLE; + + if (nw_type & ADHOC_NETWORK) { + if (ar->wdev->iftype != NL80211_IFTYPE_ADHOC) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: ath6k not in ibss mode\n", __func__); + return; + } + } + + if (nw_type & INFRA_NETWORK) { + if (ar->wdev->iftype != NL80211_IFTYPE_STATION) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: ath6k not in station mode\n", __func__); + return; + } + } + + if (nw_type & ADHOC_NETWORK) { + capa_mask = WLAN_CAPABILITY_IBSS; + capa_val = WLAN_CAPABILITY_IBSS; + } else { + capa_mask = WLAN_CAPABILITY_ESS; + capa_val = WLAN_CAPABILITY_ESS; + } + + /* Before informing the join/connect event, make sure that + * bss entry is present in scan list, if it not present + * construct and insert into scan list, otherwise that + * event will be dropped on the way by cfg80211, due to + * this keys will not be plumbed in case of WEP and + * application will not be aware of join/connect status. */ + bss = cfg80211_get_bss(ar->wdev->wiphy, NULL, bssid, + ar->wdev->ssid, ar->wdev->ssid_len, + capa_mask, capa_val); + + /* + * Earlier we were updating the cfg about bss by making a beacon frame + * only if the entry for bss is not there. This can have some issue if + * ROAM event is generated and a heavy traffic is ongoing. The ROAM + * event is handled through a work queue and by the time it really gets + * handled, BSS would have been aged out. So it is better to update the + * cfg about BSS irrespective of its entry being present right now or + * not. + */ + + if (nw_type & ADHOC_NETWORK) { + /* construct 802.11 mgmt beacon */ + if (ptr_ie_buf) { + *ptr_ie_buf++ = WLAN_EID_SSID; + *ptr_ie_buf++ = ar->ssid_len; + memcpy(ptr_ie_buf, ar->ssid, ar->ssid_len); + ptr_ie_buf += ar->ssid_len; + + *ptr_ie_buf++ = WLAN_EID_IBSS_PARAMS; + *ptr_ie_buf++ = 2; /* length */ + *ptr_ie_buf++ = 0; /* ATIM window */ + *ptr_ie_buf++ = 0; /* ATIM window */ + + /* TODO: update ibss params and include supported rates, + * DS param set, extened support rates, wmm. */ + + ie_buf_len = ptr_ie_buf - ie_buf; + } + + capability |= WLAN_CAPABILITY_IBSS; + + if (ar->prwise_crypto == WEP_CRYPT) + capability |= WLAN_CAPABILITY_PRIVACY; + + memcpy(source_mac, ar->net_dev->dev_addr, ETH_ALEN); + ptr_ie_buf = ie_buf; + } else { + capability = *(u16 *) (&assoc_info[beacon_ie_len]); + memcpy(source_mac, bssid, ETH_ALEN); + ptr_ie_buf = assoc_req_ie; + ie_buf_len = assoc_req_len; + } + + size = offsetof(struct ieee80211_mgmt, u) + + sizeof(mgmt->u.beacon) + + ie_buf_len; + + ieeemgmtbuf = kzalloc(size, GFP_ATOMIC); + if (!ieeemgmtbuf) { + ath6kl_err("ieee mgmt buf alloc error\n"); + cfg80211_put_bss(bss); + return; + } + + mgmt = (struct ieee80211_mgmt *)ieeemgmtbuf; + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_BEACON); + memset(mgmt->da, 0xff, ETH_ALEN); /* broadcast addr */ + memcpy(mgmt->sa, source_mac, ETH_ALEN); + memcpy(mgmt->bssid, bssid, ETH_ALEN); + mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_intvl); + mgmt->u.beacon.capab_info = cpu_to_le16(capability); + memcpy(mgmt->u.beacon.variable, ptr_ie_buf, ie_buf_len); + + ibss_ch = ieee80211_get_channel(ar->wdev->wiphy, (int)channel); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: inform bss with bssid %pM channel %d beacon_intvl %d capability 0x%x\n", + __func__, mgmt->bssid, ibss_ch->hw_value, + beacon_intvl, capability); + + bss = cfg80211_inform_bss_frame(ar->wdev->wiphy, + ibss_ch, mgmt, + size, signal, GFP_KERNEL); + kfree(ieeemgmtbuf); + cfg80211_put_bss(bss); + + if (nw_type & ADHOC_NETWORK) { + cfg80211_ibss_joined(ar->net_dev, bssid, GFP_KERNEL); + return; + } + + if (!test_bit(CONNECTED, &ar->flag)) { + /* inform connect result to cfg80211 */ + ar->sme_state = SME_DISCONNECTED; + cfg80211_connect_result(ar->net_dev, bssid, + assoc_req_ie, assoc_req_len, + assoc_resp_ie, assoc_resp_len, + WLAN_STATUS_SUCCESS, GFP_KERNEL); + } else { + /* inform roam event to cfg80211 */ + cfg80211_roamed(ar->net_dev, ibss_ch, bssid, + assoc_req_ie, assoc_req_len, + assoc_resp_ie, assoc_resp_len, GFP_KERNEL); + } +} + +static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy, + struct net_device *dev, u16 reason_code) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(dev); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__, + reason_code); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { + ath6kl_err("busy, destroy in progress\n"); + return -EBUSY; + } + + if (down_interruptible(&ar->sem)) { + ath6kl_err("busy, couldn't get access\n"); + return -ERESTARTSYS; + } + + ar->reconnect_flag = 0; + ath6kl_disconnect(ar); + memset(ar->ssid, 0, sizeof(ar->ssid)); + ar->ssid_len = 0; + + if (!test_bit(SKIP_SCAN, &ar->flag)) + memset(ar->req_bssid, 0, sizeof(ar->req_bssid)); + + up(&ar->sem); + + return 0; +} + +void ath6kl_cfg80211_disconnect_event(struct ath6kl *ar, u8 reason, + u8 *bssid, u8 assoc_resp_len, + u8 *assoc_info, u16 proto_reason) +{ + struct ath6kl_key *key = NULL; + u16 status; + + if (ar->scan_req) { + cfg80211_scan_done(ar->scan_req, true); + ar->scan_req = NULL; + } + + if (ar->nw_type & ADHOC_NETWORK) { + if (ar->wdev->iftype != NL80211_IFTYPE_ADHOC) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: ath6k not in ibss mode\n", __func__); + return; + } + memset(bssid, 0, ETH_ALEN); + cfg80211_ibss_joined(ar->net_dev, bssid, GFP_KERNEL); + return; + } + + if (ar->nw_type & INFRA_NETWORK) { + if (ar->wdev->iftype != NL80211_IFTYPE_STATION) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: ath6k not in station mode\n", __func__); + return; + } + } + + if (!test_bit(CONNECT_PEND, &ar->flag)) { + if (reason != DISCONNECT_CMD) + ath6kl_wmi_disconnect_cmd(ar->wmi); + + return; + } + + if (reason == NO_NETWORK_AVAIL) { + /* connect cmd failed */ + ath6kl_wmi_disconnect_cmd(ar->wmi); + return; + } + + if (reason != DISCONNECT_CMD) + return; + + if (!ar->auto_auth_stage) { + clear_bit(CONNECT_PEND, &ar->flag); + + if (ar->sme_state == SME_CONNECTING) { + cfg80211_connect_result(ar->net_dev, + bssid, NULL, 0, + NULL, 0, + WLAN_STATUS_UNSPECIFIED_FAILURE, + GFP_KERNEL); + } else { + cfg80211_disconnected(ar->net_dev, reason, + NULL, 0, GFP_KERNEL); + } + + ar->sme_state = SME_DISCONNECTED; + return; + } + + if (ar->dot11_auth_mode != OPEN_AUTH) + return; + + /* + * If the current auth algorithm is open, try shared and + * make autoAuthStage idle. We do not make it leap for now + * being. + */ + key = &ar->keys[ar->def_txkey_index]; + if (down_interruptible(&ar->sem)) { + ath6kl_err("busy, couldn't get access\n"); + return; + } + + ar->dot11_auth_mode = SHARED_AUTH; + ar->auto_auth_stage = AUTH_IDLE; + + ath6kl_wmi_addkey_cmd(ar->wmi, + ar->def_txkey_index, + ar->prwise_crypto, + GROUP_USAGE | TX_USAGE, + key->key_len, NULL, + key->key, + KEY_OP_INIT_VAL, NULL, + NO_SYNC_WMIFLAG); + + status = ath6kl_wmi_connect_cmd(ar->wmi, + ar->nw_type, + ar->dot11_auth_mode, + ar->auth_mode, + ar->prwise_crypto, + ar->prwise_crypto_len, + ar->grp_crypto, + ar->grp_crpto_len, + ar->ssid_len, + ar->ssid, + ar->req_bssid, + ar->ch_hint, + ar->connect_ctrl_flags); + up(&ar->sem); +} + +static inline bool is_ch_11a(u16 ch) +{ + return (!((ch >= 2412) && (ch <= 2484))); +} + +static void ath6kl_cfg80211_scan_node(void *arg, struct bss *ni) +{ + struct wiphy *wiphy = (struct wiphy *)arg; + u16 size; + unsigned char *ieeemgmtbuf = NULL; + struct ieee80211_mgmt *mgmt; + struct ieee80211_channel *channel; + struct ieee80211_supported_band *band; + struct ath6kl_common_ie *cie; + s32 signal; + int freq; + + cie = &ni->ni_cie; + + if (is_ch_11a(cie->ie_chan)) + band = wiphy->bands[IEEE80211_BAND_5GHZ]; /* 11a */ + else if ((cie->ie_erp) || (cie->ie_xrates)) + band = wiphy->bands[IEEE80211_BAND_2GHZ]; /* 11g */ + else + band = wiphy->bands[IEEE80211_BAND_2GHZ]; /* 11b */ + + size = ni->ni_framelen + offsetof(struct ieee80211_mgmt, u); + ieeemgmtbuf = kmalloc(size, GFP_ATOMIC); + if (!ieeemgmtbuf) { + ath6kl_err("ieee mgmt buf alloc error\n"); + return; + } + + /* + * TODO: Update target to include 802.11 mac header while sending + * bss info. Target removes 802.11 mac header while sending the bss + * info to host, cfg80211 needs it, for time being just filling the + * da, sa and bssid fields alone. + */ + mgmt = (struct ieee80211_mgmt *)ieeemgmtbuf; + memset(mgmt->da, 0xff, ETH_ALEN); /*broadcast addr */ + memcpy(mgmt->sa, ni->ni_macaddr, ETH_ALEN); + memcpy(mgmt->bssid, ni->ni_macaddr, ETH_ALEN); + memcpy(ieeemgmtbuf + offsetof(struct ieee80211_mgmt, u), + ni->ni_buf, ni->ni_framelen); + + freq = cie->ie_chan; + channel = ieee80211_get_channel(wiphy, freq); + signal = ni->ni_snr * 100; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: bssid %pM ch %d freq %d size %d\n", __func__, + mgmt->bssid, channel->hw_value, freq, size); + cfg80211_inform_bss_frame(wiphy, channel, mgmt, + size, signal, GFP_KERNEL); + + kfree(ieeemgmtbuf); +} + +static int ath6kl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev, + struct cfg80211_scan_request *request) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + int ret = 0; + u32 force_fg_scan = 0; + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (!ar->usr_bss_filter) { + if (ath6kl_wmi_bssfilter_cmd(ar->wmi, + (test_bit(CONNECTED, &ar->flag) ? + ALL_BUT_BSS_FILTER : + ALL_BSS_FILTER), 0) != 0) { + ath6kl_err("couldn't set bss filtering\n"); + return -EIO; + } + } + + if (request->n_ssids && request->ssids[0].ssid_len) { + u8 i; + + if (request->n_ssids > (MAX_PROBED_SSID_INDEX - 1)) + request->n_ssids = MAX_PROBED_SSID_INDEX - 1; + + for (i = 0; i < request->n_ssids; i++) + ath6kl_wmi_probedssid_cmd(ar->wmi, i + 1, + SPECIFIC_SSID_FLAG, + request->ssids[i].ssid_len, + request->ssids[i].ssid); + } + + if (test_bit(CONNECTED, &ar->flag)) + force_fg_scan = 1; + + if (ath6kl_wmi_startscan_cmd(ar->wmi, WMI_LONG_SCAN, force_fg_scan, + false, 0, 0, 0, NULL) != 0) { + ath6kl_err("wmi_startscan_cmd failed\n"); + ret = -EIO; + } + + ar->scan_req = request; + + return ret; +} + +void ath6kl_cfg80211_scan_complete_event(struct ath6kl *ar, int status) +{ + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status %d\n", __func__, status); + + if (ar->scan_req) { + /* Translate data to cfg80211 mgmt format */ + ath6kl_wmi_iterate_nodes(ar->wmi, ath6kl_cfg80211_scan_node, + ar->wdev->wiphy); + + cfg80211_scan_done(ar->scan_req, ((status & -ECANCELED) + || (status & -EBUSY)) ? true : + false); + + if (ar->scan_req->n_ssids && ar->scan_req->ssids[0].ssid_len) { + u8 i; + + for (i = 0; i < ar->scan_req->n_ssids; i++) { + ath6kl_wmi_probedssid_cmd(ar->wmi, i + 1, + DISABLE_SSID_FLAG, + 0, NULL); + } + } + ar->scan_req = NULL; + } +} + +static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_index, bool pairwise, + const u8 *mac_addr, + struct key_params *params) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + struct ath6kl_key *key = NULL; + u8 key_usage; + u8 key_type; + int status = 0; + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: key index %d out of bounds\n", __func__, + key_index); + return -ENOENT; + } + + key = &ar->keys[key_index]; + memset(key, 0, sizeof(struct ath6kl_key)); + + if (pairwise) + key_usage = PAIRWISE_USAGE; + else + key_usage = GROUP_USAGE; + + if (params) { + if (params->key_len > WLAN_MAX_KEY_LEN || + params->seq_len > sizeof(key->seq)) + return -EINVAL; + + key->key_len = params->key_len; + memcpy(key->key, params->key, key->key_len); + key->seq_len = params->seq_len; + memcpy(key->seq, params->seq, key->seq_len); + key->cipher = params->cipher; + } + + switch (key->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + key_type = WEP_CRYPT; + break; + + case WLAN_CIPHER_SUITE_TKIP: + key_type = TKIP_CRYPT; + break; + + case WLAN_CIPHER_SUITE_CCMP: + key_type = AES_CRYPT; + break; + + default: + return -ENOTSUPP; + } + + if (((ar->auth_mode == WPA_PSK_AUTH) + || (ar->auth_mode == WPA2_PSK_AUTH)) + && (key_usage & GROUP_USAGE)) + del_timer(&ar->disconnect_timer); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n", + __func__, key_index, key->key_len, key_type, + key_usage, key->seq_len); + + ar->def_txkey_index = key_index; + status = ath6kl_wmi_addkey_cmd(ar->wmi, ar->def_txkey_index, + key_type, key_usage, key->key_len, + key->seq, key->key, KEY_OP_INIT_VAL, + (u8 *) mac_addr, SYNC_BOTH_WMIFLAG); + + if (status) + return -EIO; + + return 0; +} + +static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_index, bool pairwise, + const u8 *mac_addr) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: key index %d out of bounds\n", __func__, + key_index); + return -ENOENT; + } + + if (!ar->keys[key_index].key_len) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: index %d is empty\n", __func__, key_index); + return 0; + } + + ar->keys[key_index].key_len = 0; + + return ath6kl_wmi_deletekey_cmd(ar->wmi, key_index); +} + +static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_index, bool pairwise, + const u8 *mac_addr, void *cookie, + void (*callback) (void *cookie, + struct key_params *)) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + struct ath6kl_key *key = NULL; + struct key_params params; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: key index %d out of bounds\n", __func__, + key_index); + return -ENOENT; + } + + key = &ar->keys[key_index]; + memset(¶ms, 0, sizeof(params)); + params.cipher = key->cipher; + params.key_len = key->key_len; + params.seq_len = key->seq_len; + params.seq = key->seq; + params.key = key->key; + + callback(cookie, ¶ms); + + return key->key_len ? 0 : -ENOENT; +} + +static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy, + struct net_device *ndev, + u8 key_index, bool unicast, + bool multicast) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + struct ath6kl_key *key = NULL; + int status = 0; + u8 key_usage; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: key index %d out of bounds\n", + __func__, key_index); + return -ENOENT; + } + + if (!ar->keys[key_index].key_len) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n", + __func__, key_index); + return -EINVAL; + } + + ar->def_txkey_index = key_index; + key = &ar->keys[ar->def_txkey_index]; + key_usage = GROUP_USAGE; + if (ar->prwise_crypto == WEP_CRYPT) + key_usage |= TX_USAGE; + + status = ath6kl_wmi_addkey_cmd(ar->wmi, ar->def_txkey_index, + ar->prwise_crypto, key_usage, + key->key_len, key->seq, key->key, + KEY_OP_INIT_VAL, NULL, + SYNC_BOTH_WMIFLAG); + if (status) + return -EIO; + + return 0; +} + +void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl *ar, u8 keyid, + bool ismcast) +{ + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast); + + cfg80211_michael_mic_failure(ar->net_dev, ar->bssid, + (ismcast ? NL80211_KEYTYPE_GROUP : + NL80211_KEYTYPE_PAIRWISE), keyid, NULL, + GFP_KERNEL); +} + +static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) +{ + struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); + int ret; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__, + changed); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (changed & WIPHY_PARAM_RTS_THRESHOLD) { + ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold); + if (ret != 0) { + ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n"); + return -EIO; + } + } + + return 0; +} + +/* + * The type nl80211_tx_power_setting replaces the following + * data type from 2.6.36 onwards +*/ +static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy, + enum nl80211_tx_power_setting type, + int dbm) +{ + struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); + u8 ath6kl_dbm; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__, + type, dbm); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + switch (type) { + case NL80211_TX_POWER_AUTOMATIC: + return 0; + case NL80211_TX_POWER_LIMITED: + ar->tx_pwr = ath6kl_dbm = dbm; + break; + default: + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n", + __func__, type); + return -EOPNOTSUPP; + } + + ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, ath6kl_dbm); + + return 0; +} + +static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, int *dbm) +{ + struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (test_bit(CONNECTED, &ar->flag)) { + ar->tx_pwr = 0; + + if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi) != 0) { + ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n"); + return -EIO; + } + + wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0, + 5 * HZ); + + if (signal_pending(current)) { + ath6kl_err("target did not respond\n"); + return -EINTR; + } + } + + *dbm = ar->tx_pwr; + return 0; +} + +static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy, + struct net_device *dev, + bool pmgmt, int timeout) +{ + struct ath6kl *ar = ath6kl_priv(dev); + struct wmi_power_mode_cmd mode; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n", + __func__, pmgmt, timeout); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (pmgmt) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__); + mode.pwr_mode = REC_POWER; + } else { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__); + mode.pwr_mode = MAX_PERF_POWER; + } + + if (ath6kl_wmi_powermode_cmd(ar->wmi, mode.pwr_mode) != 0) { + ath6kl_err("wmi_powermode_cmd failed\n"); + return -EIO; + } + + return 0; +} + +static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy, + struct net_device *ndev, + enum nl80211_iftype type, u32 *flags, + struct vif_params *params) +{ + struct ath6kl *ar = ath6kl_priv(ndev); + struct wireless_dev *wdev = ar->wdev; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + switch (type) { + case NL80211_IFTYPE_STATION: + ar->next_mode = INFRA_NETWORK; + break; + case NL80211_IFTYPE_ADHOC: + ar->next_mode = ADHOC_NETWORK; + break; + default: + ath6kl_err("invalid interface type %u\n", type); + return -EOPNOTSUPP; + } + + wdev->iftype = type; + + return 0; +} + +static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_ibss_params *ibss_param) +{ + struct ath6kl *ar = ath6kl_priv(dev); + int status; + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + ar->ssid_len = ibss_param->ssid_len; + memcpy(ar->ssid, ibss_param->ssid, ar->ssid_len); + + if (ibss_param->channel) + ar->ch_hint = ibss_param->channel->center_freq; + + if (ibss_param->channel_fixed) { + /* + * TODO: channel_fixed: The channel should be fixed, do not + * search for IBSSs to join on other channels. Target + * firmware does not support this feature, needs to be + * updated. + */ + return -EOPNOTSUPP; + } + + memset(ar->req_bssid, 0, sizeof(ar->req_bssid)); + if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid)) + memcpy(ar->req_bssid, ibss_param->bssid, sizeof(ar->req_bssid)); + + ath6kl_set_wpa_version(ar, 0); + + status = ath6kl_set_auth_type(ar, NL80211_AUTHTYPE_OPEN_SYSTEM); + if (status) + return status; + + if (ibss_param->privacy) { + ath6kl_set_cipher(ar, WLAN_CIPHER_SUITE_WEP40, true); + ath6kl_set_cipher(ar, WLAN_CIPHER_SUITE_WEP40, false); + } else { + ath6kl_set_cipher(ar, 0, true); + ath6kl_set_cipher(ar, 0, false); + } + + ar->nw_type = ar->next_mode; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: connect called with authmode %d dot11 auth %d" + " PW crypto %d PW crypto len %d GRP crypto %d" + " GRP crypto len %d channel hint %u\n", + __func__, + ar->auth_mode, ar->dot11_auth_mode, ar->prwise_crypto, + ar->prwise_crypto_len, ar->grp_crypto, + ar->grp_crpto_len, ar->ch_hint); + + status = ath6kl_wmi_connect_cmd(ar->wmi, ar->nw_type, + ar->dot11_auth_mode, ar->auth_mode, + ar->prwise_crypto, + ar->prwise_crypto_len, + ar->grp_crypto, ar->grp_crpto_len, + ar->ssid_len, ar->ssid, + ar->req_bssid, ar->ch_hint, + ar->connect_ctrl_flags); + set_bit(CONNECT_PEND, &ar->flag); + + return 0; +} + +static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy, + struct net_device *dev) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(dev); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + ath6kl_disconnect(ar); + memset(ar->ssid, 0, sizeof(ar->ssid)); + ar->ssid_len = 0; + + return 0; +} + +static const u32 cipher_suites[] = { + WLAN_CIPHER_SUITE_WEP40, + WLAN_CIPHER_SUITE_WEP104, + WLAN_CIPHER_SUITE_TKIP, + WLAN_CIPHER_SUITE_CCMP, +}; + +static bool is_rate_legacy(s32 rate) +{ + static const s32 legacy[] = { 1000, 2000, 5500, 11000, + 6000, 9000, 12000, 18000, 24000, + 36000, 48000, 54000 + }; + u8 i; + + for (i = 0; i < ARRAY_SIZE(legacy); i++) + if (rate == legacy[i]) + return true; + + return false; +} + +static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi) +{ + static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000, + 52000, 58500, 65000, 72200 + }; + u8 i; + + for (i = 0; i < ARRAY_SIZE(ht20); i++) { + if (rate == ht20[i]) { + if (i == ARRAY_SIZE(ht20) - 1) + /* last rate uses sgi */ + *sgi = true; + else + *sgi = false; + + *mcs = i; + return true; + } + } + return false; +} + +static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi) +{ + static const s32 ht40[] = { 13500, 27000, 40500, 54000, + 81000, 108000, 121500, 135000, + 150000 + }; + u8 i; + + for (i = 0; i < ARRAY_SIZE(ht40); i++) { + if (rate == ht40[i]) { + if (i == ARRAY_SIZE(ht40) - 1) + /* last rate uses sgi */ + *sgi = true; + else + *sgi = false; + + *mcs = i; + return true; + } + } + + return false; +} + +static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev, + u8 *mac, struct station_info *sinfo) +{ + struct ath6kl *ar = ath6kl_priv(dev); + long left; + bool sgi; + s32 rate; + int ret; + u8 mcs; + + if (memcmp(mac, ar->bssid, ETH_ALEN) != 0) + return -ENOENT; + + if (down_interruptible(&ar->sem)) + return -EBUSY; + + set_bit(STATS_UPDATE_PEND, &ar->flag); + + ret = ath6kl_wmi_get_stats_cmd(ar->wmi); + + if (ret != 0) { + up(&ar->sem); + return -EIO; + } + + left = wait_event_interruptible_timeout(ar->event_wq, + !test_bit(STATS_UPDATE_PEND, + &ar->flag), + WMI_TIMEOUT); + + up(&ar->sem); + + if (left == 0) + return -ETIMEDOUT; + else if (left < 0) + return left; + + if (ar->target_stats.rx_byte) { + sinfo->rx_bytes = ar->target_stats.rx_byte; + sinfo->filled |= STATION_INFO_RX_BYTES; + sinfo->rx_packets = ar->target_stats.rx_pkt; + sinfo->filled |= STATION_INFO_RX_PACKETS; + } + + if (ar->target_stats.tx_byte) { + sinfo->tx_bytes = ar->target_stats.tx_byte; + sinfo->filled |= STATION_INFO_TX_BYTES; + sinfo->tx_packets = ar->target_stats.tx_pkt; + sinfo->filled |= STATION_INFO_TX_PACKETS; + } + + sinfo->signal = ar->target_stats.cs_rssi; + sinfo->filled |= STATION_INFO_SIGNAL; + + rate = ar->target_stats.tx_ucast_rate; + + if (is_rate_legacy(rate)) { + sinfo->txrate.legacy = rate / 100; + } else if (is_rate_ht20(rate, &mcs, &sgi)) { + if (sgi) { + sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; + sinfo->txrate.mcs = mcs - 1; + } else { + sinfo->txrate.mcs = mcs; + } + + sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; + } else if (is_rate_ht40(rate, &mcs, &sgi)) { + if (sgi) { + sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; + sinfo->txrate.mcs = mcs - 1; + } else { + sinfo->txrate.mcs = mcs; + } + + sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; + sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; + } else { + ath6kl_warn("invalid rate: %d\n", rate); + return 0; + } + + sinfo->filled |= STATION_INFO_TX_BITRATE; + + return 0; +} + +static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev, + struct cfg80211_pmksa *pmksa) +{ + struct ath6kl *ar = ath6kl_priv(netdev); + return ath6kl_wmi_setpmkid_cmd(ar->wmi, pmksa->bssid, + pmksa->pmkid, true); +} + +static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev, + struct cfg80211_pmksa *pmksa) +{ + struct ath6kl *ar = ath6kl_priv(netdev); + return ath6kl_wmi_setpmkid_cmd(ar->wmi, pmksa->bssid, + pmksa->pmkid, false); +} + +static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev) +{ + struct ath6kl *ar = ath6kl_priv(netdev); + if (test_bit(CONNECTED, &ar->flag)) + return ath6kl_wmi_setpmkid_cmd(ar->wmi, ar->bssid, NULL, false); + return 0; +} + +static struct cfg80211_ops ath6kl_cfg80211_ops = { + .change_virtual_intf = ath6kl_cfg80211_change_iface, + .scan = ath6kl_cfg80211_scan, + .connect = ath6kl_cfg80211_connect, + .disconnect = ath6kl_cfg80211_disconnect, + .add_key = ath6kl_cfg80211_add_key, + .get_key = ath6kl_cfg80211_get_key, + .del_key = ath6kl_cfg80211_del_key, + .set_default_key = ath6kl_cfg80211_set_default_key, + .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params, + .set_tx_power = ath6kl_cfg80211_set_txpower, + .get_tx_power = ath6kl_cfg80211_get_txpower, + .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt, + .join_ibss = ath6kl_cfg80211_join_ibss, + .leave_ibss = ath6kl_cfg80211_leave_ibss, + .get_station = ath6kl_get_station, + .set_pmksa = ath6kl_set_pmksa, + .del_pmksa = ath6kl_del_pmksa, + .flush_pmksa = ath6kl_flush_pmksa, +}; + +struct wireless_dev *ath6kl_cfg80211_init(struct device *dev) +{ + int ret = 0; + struct wireless_dev *wdev; + + wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); + if (!wdev) { + ath6kl_err("couldn't allocate wireless device\n"); + return NULL; + } + + /* create a new wiphy for use with cfg80211 */ + wdev->wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl)); + if (!wdev->wiphy) { + ath6kl_err("couldn't allocate wiphy device\n"); + kfree(wdev); + return NULL; + } + + /* set device pointer for wiphy */ + set_wiphy_dev(wdev->wiphy, dev); + + wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC); + /* max num of ssids that can be probed during scanning */ + wdev->wiphy->max_scan_ssids = MAX_PROBED_SSID_INDEX; + wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz; + wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz; + wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; + + wdev->wiphy->cipher_suites = cipher_suites; + wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); + + ret = wiphy_register(wdev->wiphy); + if (ret < 0) { + ath6kl_err("couldn't register wiphy device\n"); + wiphy_free(wdev->wiphy); + kfree(wdev); + return NULL; + } + + return wdev; +} + +void ath6kl_cfg80211_deinit(struct ath6kl *ar) +{ + struct wireless_dev *wdev = ar->wdev; + + if (ar->scan_req) { + cfg80211_scan_done(ar->scan_req, true); + ar->scan_req = NULL; + } + + if (!wdev) + return; + + wiphy_unregister(wdev->wiphy); + wiphy_free(wdev->wiphy); + kfree(wdev); +} diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.h b/drivers/net/wireless/ath/ath6kl/cfg80211.h new file mode 100644 index 000000000000..a84adc249c61 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.h @@ -0,0 +1,39 @@ +/* + * Copyright (c) 2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef ATH6KL_CFG80211_H +#define ATH6KL_CFG80211_H + +struct wireless_dev *ath6kl_cfg80211_init(struct device *dev); +void ath6kl_cfg80211_deinit(struct ath6kl *ar); + +void ath6kl_cfg80211_scan_complete_event(struct ath6kl *ar, int status); + +void ath6kl_cfg80211_connect_event(struct ath6kl *ar, u16 channel, + u8 *bssid, u16 listen_intvl, + u16 beacon_intvl, + enum network_type nw_type, + u8 beacon_ie_len, u8 assoc_req_len, + u8 assoc_resp_len, u8 *assoc_info); + +void ath6kl_cfg80211_disconnect_event(struct ath6kl *ar, u8 reason, + u8 *bssid, u8 assoc_resp_len, + u8 *assoc_info, u16 proto_reason); + +void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl *ar, u8 keyid, + bool ismcast); + +#endif /* ATH6KL_CFG80211_H */ diff --git a/drivers/net/wireless/ath/ath6kl/common.h b/drivers/net/wireless/ath/ath6kl/common.h new file mode 100644 index 000000000000..0a3a1d80d0a4 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/common.h @@ -0,0 +1,183 @@ +/* + * Copyright (c) 2010-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef COMMON_H +#define COMMON_H + +#include <linux/netdevice.h> + +#define ATH6KL_MAX_IE 256 + +extern int ath6kl_printk(const char *level, const char *fmt, ...); + +#define A_CACHE_LINE_PAD 128 + +/* + * Reflects the version of binary interface exposed by ATH6KL target + * firmware. Needs to be incremented by 1 for any change in the firmware + * that requires upgrade of the driver on the host side for the change to + * work correctly + */ +#define ATH6KL_ABI_VERSION 1 + +#define SIGNAL_QUALITY_METRICS_NUM_MAX 2 + +enum { + SIGNAL_QUALITY_METRICS_SNR = 0, + SIGNAL_QUALITY_METRICS_RSSI, + SIGNAL_QUALITY_METRICS_ALL, +}; + +/* + * Data Path + */ + +#define WMI_MAX_TX_DATA_FRAME_LENGTH \ + (1500 + sizeof(struct wmi_data_hdr) + \ + sizeof(struct ethhdr) + \ + sizeof(struct ath6kl_llc_snap_hdr)) + +/* An AMSDU frame */ /* The MAX AMSDU length of AR6003 is 3839 */ +#define WMI_MAX_AMSDU_RX_DATA_FRAME_LENGTH \ + (3840 + sizeof(struct wmi_data_hdr) + \ + sizeof(struct ethhdr) + \ + sizeof(struct ath6kl_llc_snap_hdr)) + +#define EPPING_ALIGNMENT_PAD \ + (((sizeof(struct htc_frame_hdr) + 3) & (~0x3)) \ + - sizeof(struct htc_frame_hdr)) + +struct ath6kl_llc_snap_hdr { + u8 dsap; + u8 ssap; + u8 cntl; + u8 org_code[3]; + __be16 eth_type; +} __packed; + +enum crypto_type { + NONE_CRYPT = 0x01, + WEP_CRYPT = 0x02, + TKIP_CRYPT = 0x04, + AES_CRYPT = 0x08, +}; + +#define ATH6KL_NODE_HASHSIZE 32 +/* simple hash is enough for variation of macaddr */ +#define ATH6KL_NODE_HASH(addr) \ + (((const u8 *)(addr))[ETH_ALEN - 1] % \ + ATH6KL_NODE_HASHSIZE) + +/* + * Table of ath6kl_node instances. Each ieee80211com + * has at least one for holding the scan candidates. + * When operating as an access point or in ibss mode there + * is a second table for associated stations or neighbors. + */ +struct ath6kl_node_table { + void *nt_wmi; /* back reference */ + spinlock_t nt_nodelock; /* on node table */ + struct bss *nt_node_first; /* information of all nodes */ + struct bss *nt_node_last; /* information of all nodes */ + struct bss *nt_hash[ATH6KL_NODE_HASHSIZE]; + const char *nt_name; /* for debugging */ + u32 nt_node_age; /* node aging time */ +}; + +#define WLAN_NODE_INACT_TIMEOUT_MSEC 120000 +#define WLAN_NODE_INACT_CNT 4 + +struct ath6kl_common_ie { + u16 ie_chan; + u8 *ie_tstamp; + u8 *ie_ssid; + u8 *ie_rates; + u8 *ie_xrates; + u8 *ie_country; + u8 *ie_wpa; + u8 *ie_rsn; + u8 *ie_wmm; + u8 *ie_ath; + u16 ie_capInfo; + u16 ie_beaconInt; + u8 *ie_tim; + u8 *ie_chswitch; + u8 ie_erp; + u8 *ie_wsc; + u8 *ie_htcap; + u8 *ie_htop; +}; + +struct bss { + u8 ni_macaddr[ETH_ALEN]; + u8 ni_snr; + s16 ni_rssi; + struct bss *ni_list_next; + struct bss *ni_list_prev; + struct bss *ni_hash_next; + struct bss *ni_hash_prev; + struct ath6kl_common_ie ni_cie; + u8 *ni_buf; + u16 ni_framelen; + struct ath6kl_node_table *ni_table; + u32 ni_refcnt; + + u32 ni_tstamp; + u32 ni_actcnt; +}; + +struct htc_endpoint_credit_dist; +struct ath6kl; +enum htc_credit_dist_reason; +struct htc_credit_state_info; + +struct bss *wlan_node_alloc(int wh_size); +void wlan_node_free(struct bss *ni); +void wlan_setup_node(struct ath6kl_node_table *nt, struct bss *ni, + const u8 *mac_addr); +struct bss *wlan_find_node(struct ath6kl_node_table *nt, + const u8 *mac_addr); +void wlan_node_reclaim(struct ath6kl_node_table *nt, struct bss *ni); +void wlan_free_allnodes(struct ath6kl_node_table *nt); +void wlan_iterate_nodes(struct ath6kl_node_table *nt, + void (*f) (void *arg, struct bss *), + void *arg); + +void wlan_node_table_init(void *wmip, struct ath6kl_node_table *nt); +void wlan_node_table_cleanup(struct ath6kl_node_table *nt); + +void wlan_refresh_inactive_nodes(struct ath6kl_node_table *nt); + +struct bss *wlan_find_ssid_node(struct ath6kl_node_table *nt, u8 *ssid, + u32 ssid_len, bool is_wpa2, bool match_ssid); + +void wlan_node_return(struct ath6kl_node_table *nt, struct bss *ni); + +int ath6k_setup_credit_dist(void *htc_handle, + struct htc_credit_state_info *cred_info); +void ath6k_credit_distribute(struct htc_credit_state_info *cred_inf, + struct list_head *epdist_list, + enum htc_credit_dist_reason reason); +void ath6k_credit_init(struct htc_credit_state_info *cred_inf, + struct list_head *ep_list, + int tot_credits); +void ath6k_seek_credits(struct htc_credit_state_info *cred_inf, + struct htc_endpoint_credit_dist *ep_dist); +struct ath6kl *ath6kl_core_alloc(struct device *sdev); +int ath6kl_core_init(struct ath6kl *ar); +int ath6kl_unavail_ev(struct ath6kl *ar); +struct sk_buff *ath6kl_buf_alloc(int size); +#endif /* COMMON_H */ diff --git a/drivers/net/wireless/ath/ath6kl/core.h b/drivers/net/wireless/ath/ath6kl/core.h new file mode 100644 index 000000000000..86177f0b98a5 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/core.h @@ -0,0 +1,546 @@ +/* + * Copyright (c) 2010-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef CORE_H +#define CORE_H + +#include <linux/etherdevice.h> +#include <linux/rtnetlink.h> +#include <linux/firmware.h> +#include <linux/sched.h> +#include <net/cfg80211.h> +#include "htc.h" +#include "wmi.h" +#include "bmi.h" + +#define MAX_ATH6KL 1 +#define ATH6KL_MAX_RX_BUFFERS 16 +#define ATH6KL_BUFFER_SIZE 1664 +#define ATH6KL_MAX_AMSDU_RX_BUFFERS 4 +#define ATH6KL_AMSDU_REFILL_THRESHOLD 3 +#define ATH6KL_AMSDU_BUFFER_SIZE (WMI_MAX_AMSDU_RX_DATA_FRAME_LENGTH + 128) +#define MAX_MSDU_SUBFRAME_PAYLOAD_LEN 1508 +#define MIN_MSDU_SUBFRAME_PAYLOAD_LEN 46 + +#define USER_SAVEDKEYS_STAT_INIT 0 +#define USER_SAVEDKEYS_STAT_RUN 1 + +#define ATH6KL_TX_TIMEOUT 10 +#define ATH6KL_MAX_ENDPOINTS 4 +#define MAX_NODE_NUM 15 + +/* MAX_HI_COOKIE_NUM are reserved for high priority traffic */ +#define MAX_DEF_COOKIE_NUM 180 +#define MAX_HI_COOKIE_NUM 18 /* 10% of MAX_COOKIE_NUM */ +#define MAX_COOKIE_NUM (MAX_DEF_COOKIE_NUM + MAX_HI_COOKIE_NUM) + +#define MAX_DEFAULT_SEND_QUEUE_DEPTH (MAX_DEF_COOKIE_NUM / WMM_NUM_AC) + +#define DISCON_TIMER_INTVAL 10000 /* in msec */ +#define A_DEFAULT_LISTEN_INTERVAL 100 +#define A_MAX_WOW_LISTEN_INTERVAL 1000 + +/* AR6003 1.0 definitions */ +#define AR6003_REV1_VERSION 0x300002ba + +/* AR6003 2.0 definitions */ +#define AR6003_REV2_VERSION 0x30000384 +#define AR6003_REV2_PATCH_DOWNLOAD_ADDRESS 0x57e910 +#define AR6003_REV2_OTP_FILE "ath6k/AR6003/hw2.0/otp.bin.z77" +#define AR6003_REV2_FIRMWARE_FILE "ath6k/AR6003/hw2.0/athwlan.bin.z77" +#define AR6003_REV2_PATCH_FILE "ath6k/AR6003/hw2.0/data.patch.bin" +#define AR6003_REV2_BOARD_DATA_FILE "ath6k/AR6003/hw2.0/bdata.bin" +#define AR6003_REV2_DEFAULT_BOARD_DATA_FILE "ath6k/AR6003/hw2.0/bdata.SD31.bin" + +/* AR6003 3.0 definitions */ +#define AR6003_REV3_VERSION 0x30000582 +#define AR6003_REV3_OTP_FILE "ath6k/AR6003/hw2.1.1/otp.bin" +#define AR6003_REV3_FIRMWARE_FILE "ath6k/AR6003/hw2.1.1/athwlan.bin" +#define AR6003_REV3_PATCH_FILE "ath6k/AR6003/hw2.1.1/data.patch.bin" +#define AR6003_REV3_BOARD_DATA_FILE "ath6k/AR6003/hw2.1.1/bdata.bin" +#define AR6003_REV3_DEFAULT_BOARD_DATA_FILE \ + "ath6k/AR6003/hw2.1.1/bdata.SD31.bin" + +/* Per STA data, used in AP mode */ +#define STA_PS_AWAKE BIT(0) +#define STA_PS_SLEEP BIT(1) +#define STA_PS_POLLED BIT(2) + +/* HTC TX packet tagging definitions */ +#define ATH6KL_CONTROL_PKT_TAG HTC_TX_PACKET_TAG_USER_DEFINED +#define ATH6KL_DATA_PKT_TAG (ATH6KL_CONTROL_PKT_TAG + 1) + +#define AR6003_CUST_DATA_SIZE 16 + +#define AGGR_WIN_IDX(x, y) ((x) % (y)) +#define AGGR_INCR_IDX(x, y) AGGR_WIN_IDX(((x) + 1), (y)) +#define AGGR_DCRM_IDX(x, y) AGGR_WIN_IDX(((x) - 1), (y)) +#define ATH6KL_MAX_SEQ_NO 0xFFF +#define ATH6KL_NEXT_SEQ_NO(x) (((x) + 1) & ATH6KL_MAX_SEQ_NO) + +#define NUM_OF_TIDS 8 +#define AGGR_SZ_DEFAULT 8 + +#define AGGR_WIN_SZ_MIN 2 +#define AGGR_WIN_SZ_MAX 8 + +#define TID_WINDOW_SZ(_x) ((_x) << 1) + +#define AGGR_NUM_OF_FREE_NETBUFS 16 + +#define AGGR_RX_TIMEOUT 400 /* in ms */ + +#define WMI_TIMEOUT (2 * HZ) + +#define MBOX_YIELD_LIMIT 99 + +/* configuration lags */ +/* + * ATH6KL_CONF_IGNORE_ERP_BARKER: Ignore the barker premable in + * ERP IE of beacon to determine the short premable support when + * sending (Re)Assoc req. + * ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN: Don't send the power + * module state transition failure events which happen during + * scan, to the host. + */ +#define ATH6KL_CONF_IGNORE_ERP_BARKER BIT(0) +#define ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN BIT(1) +#define ATH6KL_CONF_ENABLE_11N BIT(2) +#define ATH6KL_CONF_ENABLE_TX_BURST BIT(3) + +enum wlan_low_pwr_state { + WLAN_POWER_STATE_ON, + WLAN_POWER_STATE_CUT_PWR, + WLAN_POWER_STATE_DEEP_SLEEP, + WLAN_POWER_STATE_WOW +}; + +enum sme_state { + SME_DISCONNECTED, + SME_CONNECTING, + SME_CONNECTED +}; + +enum ath6kl_wlan_state { + WLAN_DISABLED, + WLAN_ENABLED +}; + +struct skb_hold_q { + struct sk_buff *skb; + bool is_amsdu; + u16 seq_no; +}; + +struct rxtid { + bool aggr; + bool progress; + bool timer_mon; + u16 win_sz; + u16 seq_next; + u32 hold_q_sz; + struct skb_hold_q *hold_q; + struct sk_buff_head q; + spinlock_t lock; +}; + +struct rxtid_stats { + u32 num_into_aggr; + u32 num_dups; + u32 num_oow; + u32 num_mpdu; + u32 num_amsdu; + u32 num_delivered; + u32 num_timeouts; + u32 num_hole; + u32 num_bar; +}; + +struct aggr_info { + u8 aggr_sz; + u8 timer_scheduled; + struct timer_list timer; + struct net_device *dev; + struct rxtid rx_tid[NUM_OF_TIDS]; + struct sk_buff_head free_q; + struct rxtid_stats stat[NUM_OF_TIDS]; +}; + +struct ath6kl_wep_key { + u8 key_index; + u8 key_len; + u8 key[64]; +}; + +#define ATH6KL_KEY_SEQ_LEN 8 + +struct ath6kl_key { + u8 key[WLAN_MAX_KEY_LEN]; + u8 key_len; + u8 seq[ATH6KL_KEY_SEQ_LEN]; + u8 seq_len; + u32 cipher; +}; + +struct ath6kl_node_mapping { + u8 mac_addr[ETH_ALEN]; + u8 ep_id; + u8 tx_pend; +}; + +struct ath6kl_cookie { + struct sk_buff *skb; + u32 map_no; + struct htc_packet htc_pkt; + struct ath6kl_cookie *arc_list_next; +}; + +struct ath6kl_sta { + u16 sta_flags; + u8 mac[ETH_ALEN]; + u8 aid; + u8 keymgmt; + u8 ucipher; + u8 auth; + u8 wpa_ie[ATH6KL_MAX_IE]; + struct sk_buff_head psq; + spinlock_t psq_lock; +}; + +struct ath6kl_version { + u32 target_ver; + u32 wlan_ver; + u32 abi_ver; +}; + +struct ath6kl_bmi { + u32 cmd_credits; + bool done_sent; + u8 *cmd_buf; +}; + +struct target_stats { + u64 tx_pkt; + u64 tx_byte; + u64 tx_ucast_pkt; + u64 tx_ucast_byte; + u64 tx_mcast_pkt; + u64 tx_mcast_byte; + u64 tx_bcast_pkt; + u64 tx_bcast_byte; + u64 tx_rts_success_cnt; + u64 tx_pkt_per_ac[4]; + + u64 tx_err; + u64 tx_fail_cnt; + u64 tx_retry_cnt; + u64 tx_mult_retry_cnt; + u64 tx_rts_fail_cnt; + + u64 rx_pkt; + u64 rx_byte; + u64 rx_ucast_pkt; + u64 rx_ucast_byte; + u64 rx_mcast_pkt; + u64 rx_mcast_byte; + u64 rx_bcast_pkt; + u64 rx_bcast_byte; + u64 rx_frgment_pkt; + + u64 rx_err; + u64 rx_crc_err; + u64 rx_key_cache_miss; + u64 rx_decrypt_err; + u64 rx_dupl_frame; + + u64 tkip_local_mic_fail; + u64 tkip_cnter_measures_invoked; + u64 tkip_replays; + u64 tkip_fmt_err; + u64 ccmp_fmt_err; + u64 ccmp_replays; + + u64 pwr_save_fail_cnt; + + u64 cs_bmiss_cnt; + u64 cs_low_rssi_cnt; + u64 cs_connect_cnt; + u64 cs_discon_cnt; + + s32 tx_ucast_rate; + s32 rx_ucast_rate; + + u32 lq_val; + + u32 wow_pkt_dropped; + u16 wow_evt_discarded; + + s16 noise_floor_calib; + s16 cs_rssi; + s16 cs_ave_beacon_rssi; + u8 cs_ave_beacon_snr; + u8 cs_last_roam_msec; + u8 cs_snr; + + u8 wow_host_pkt_wakeups; + u8 wow_host_evt_wakeups; + + u32 arp_received; + u32 arp_matched; + u32 arp_replied; +}; + +struct ath6kl_mbox_info { + u32 htc_addr; + u32 htc_ext_addr; + u32 htc_ext_sz; + + u32 block_size; + + u32 gmbox_addr; + + u32 gmbox_sz; +}; + +/* + * 802.11i defines an extended IV for use with non-WEP ciphers. + * When the EXTIV bit is set in the key id byte an additional + * 4 bytes immediately follow the IV for TKIP. For CCMP the + * EXTIV bit is likewise set but the 8 bytes represent the + * CCMP header rather than IV+extended-IV. + */ + +#define ATH6KL_KEYBUF_SIZE 16 +#define ATH6KL_MICBUF_SIZE (8+8) /* space for both tx and rx */ + +#define ATH6KL_KEY_XMIT 0x01 +#define ATH6KL_KEY_RECV 0x02 +#define ATH6KL_KEY_DEFAULT 0x80 /* default xmit key */ + +/* + * WPA/RSN get/set key request. Specify the key/cipher + * type and whether the key is to be used for sending and/or + * receiving. The key index should be set only when working + * with global keys (use IEEE80211_KEYIX_NONE for ``no index''). + * Otherwise a unicast/pairwise key is specified by the bssid + * (on a station) or mac address (on an ap). They key length + * must include any MIC key data; otherwise it should be no + * more than ATH6KL_KEYBUF_SIZE. + */ +struct ath6kl_req_key { + u8 ik_type; /* key/cipher type */ + u8 ik_pad; + u16 ik_keyix; /* key index */ + u8 ik_keylen; /* key length in bytes */ + u8 ik_flags; + u8 ik_macaddr[ETH_ALEN]; + u64 ik_keyrsc; /* key receive sequence counter */ + u64 ik_keytsc; /* key transmit sequence counter */ + u8 ik_keydata[ATH6KL_KEYBUF_SIZE + ATH6KL_MICBUF_SIZE]; +}; + +/* Flag info */ +#define WMI_ENABLED 0 +#define WMI_READY 1 +#define CONNECTED 2 +#define STATS_UPDATE_PEND 3 +#define CONNECT_PEND 4 +#define WMM_ENABLED 5 +#define NETQ_STOPPED 6 +#define WMI_CTRL_EP_FULL 7 +#define DTIM_EXPIRED 8 +#define DESTROY_IN_PROGRESS 9 +#define NETDEV_REGISTERED 10 +#define SKIP_SCAN 11 + +struct ath6kl { + struct device *dev; + struct net_device *net_dev; + struct ath6kl_bmi bmi; + const struct ath6kl_hif_ops *hif_ops; + struct wmi *wmi; + int tx_pending[ENDPOINT_MAX]; + int total_tx_data_pend; + struct htc_target *htc_target; + void *hif_priv; + spinlock_t lock; + struct semaphore sem; + int ssid_len; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + u8 next_mode; + u8 nw_type; + u8 dot11_auth_mode; + u8 auth_mode; + u8 prwise_crypto; + u8 prwise_crypto_len; + u8 grp_crypto; + u8 grp_crpto_len; + u8 def_txkey_index; + struct ath6kl_wep_key wep_key_list[WMI_MAX_KEY_INDEX + 1]; + u8 bssid[ETH_ALEN]; + u8 req_bssid[ETH_ALEN]; + u16 ch_hint; + u16 bss_ch; + u16 listen_intvl_b; + u16 listen_intvl_t; + struct ath6kl_version version; + u32 target_type; + u8 tx_pwr; + struct net_device_stats net_stats; + struct target_stats target_stats; + enum ath6kl_wlan_state wlan_state; + struct ath6kl_node_mapping node_map[MAX_NODE_NUM]; + u8 ibss_ps_enable; + u8 node_num; + u8 next_ep_id; + struct ath6kl_cookie *cookie_list; + u32 cookie_count; + enum htc_endpoint_id ac2ep_map[WMM_NUM_AC]; + bool ac_stream_active[WMM_NUM_AC]; + u8 ac_stream_pri_map[WMM_NUM_AC]; + u8 hiac_stream_active_pri; + u8 ep2ac_map[ENDPOINT_MAX]; + enum htc_endpoint_id ctrl_ep; + struct htc_credit_state_info credit_state_info; + u32 connect_ctrl_flags; + u32 user_key_ctrl; + u8 usr_bss_filter; + struct ath6kl_sta sta_list[AP_MAX_NUM_STA]; + u8 sta_list_index; + struct ath6kl_req_key ap_mode_bkey; + struct sk_buff_head mcastpsq; + spinlock_t mcastpsq_lock; + u8 intra_bss; + struct aggr_info *aggr_cntxt; + struct wmi_ap_mode_stat ap_stats; + u8 ap_country_code[3]; + struct list_head amsdu_rx_buffer_queue; + struct timer_list disconnect_timer; + u8 rx_meta_ver; + struct wireless_dev *wdev; + struct cfg80211_scan_request *scan_req; + struct ath6kl_key keys[WMI_MAX_KEY_INDEX + 1]; + enum sme_state sme_state; + enum wlan_low_pwr_state wlan_pwr_state; + struct wmi_scan_params_cmd sc_params; +#define AR_MCAST_FILTER_MAC_ADDR_SIZE 4 + u8 auto_auth_stage; + + u16 conf_flags; + wait_queue_head_t event_wq; + struct ath6kl_mbox_info mbox_info; + + struct ath6kl_cookie cookie_mem[MAX_COOKIE_NUM]; + int reconnect_flag; + unsigned long flag; + + u8 *fw_board; + size_t fw_board_len; + + u8 *fw_otp; + size_t fw_otp_len; + + u8 *fw; + size_t fw_len; + + u8 *fw_patch; + size_t fw_patch_len; + + struct workqueue_struct *ath6kl_wq; +}; + +static inline void *ath6kl_priv(struct net_device *dev) +{ + return wdev_priv(dev->ieee80211_ptr); +} + +static inline void ath6kl_deposit_credit_to_ep(struct htc_credit_state_info + *cred_info, + struct htc_endpoint_credit_dist + *ep_dist, int credits) +{ + ep_dist->credits += credits; + ep_dist->cred_assngd += credits; + cred_info->cur_free_credits -= credits; +} + +void ath6kl_destroy(struct net_device *dev, unsigned int unregister); +int ath6kl_configure_target(struct ath6kl *ar); +void ath6kl_detect_error(unsigned long ptr); +void disconnect_timer_handler(unsigned long ptr); +void init_netdev(struct net_device *dev); +void ath6kl_cookie_init(struct ath6kl *ar); +void ath6kl_cookie_cleanup(struct ath6kl *ar); +void ath6kl_rx(struct htc_target *target, struct htc_packet *packet); +void ath6kl_tx_complete(void *context, struct list_head *packet_queue); +enum htc_send_full_action ath6kl_tx_queue_full(struct htc_target *target, + struct htc_packet *packet); +void ath6kl_stop_txrx(struct ath6kl *ar); +void ath6kl_cleanup_amsdu_rxbufs(struct ath6kl *ar); +int ath6kl_access_datadiag(struct ath6kl *ar, u32 address, + u8 *data, u32 length, bool read); +int ath6kl_read_reg_diag(struct ath6kl *ar, u32 *address, u32 *data); +void ath6kl_init_profile_info(struct ath6kl *ar); +void ath6kl_tx_data_cleanup(struct ath6kl *ar); +void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, + bool get_dbglogs); + +struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar); +void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie); +int ath6kl_data_tx(struct sk_buff *skb, struct net_device *dev); + +struct aggr_info *aggr_init(struct net_device *dev); +void ath6kl_rx_refill(struct htc_target *target, + enum htc_endpoint_id endpoint); +void ath6kl_refill_amsdu_rxbufs(struct ath6kl *ar, int count); +struct htc_packet *ath6kl_alloc_amsdu_rxbuf(struct htc_target *target, + enum htc_endpoint_id endpoint, + int len); +void aggr_module_destroy(struct aggr_info *aggr_info); +void aggr_reset_state(struct aggr_info *aggr_info); + +struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 * node_addr); +struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid); + +void ath6kl_ready_event(void *devt, u8 * datap, u32 sw_ver, u32 abi_ver); +int ath6kl_control_tx(void *devt, struct sk_buff *skb, + enum htc_endpoint_id eid); +void ath6kl_connect_event(struct ath6kl *ar, u16 channel, + u8 *bssid, u16 listen_int, + u16 beacon_int, enum network_type net_type, + u8 beacon_ie_len, u8 assoc_req_len, + u8 assoc_resp_len, u8 *assoc_info); +void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, + u8 *bssid, u8 assoc_resp_len, + u8 *assoc_info, u16 prot_reason_status); +void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast); +void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr); +void ath6kl_scan_complete_evt(struct ath6kl *ar, int status); +void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len); +void ath6kl_indicate_tx_activity(void *devt, u8 traffic_class, bool active); +enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac); + +void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid); + +void ath6kl_dtimexpiry_event(struct ath6kl *ar); +void ath6kl_disconnect(struct ath6kl *ar); +void aggr_recv_delba_req_evt(struct ath6kl *ar, u8 tid); +void aggr_recv_addba_req_evt(struct ath6kl *ar, u8 tid, u16 seq_no, + u8 win_sz); +void ath6kl_wakeup_event(void *dev); +void ath6kl_target_failure(struct ath6kl *ar); + +#endif /* CORE_H */ diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c new file mode 100644 index 000000000000..316136c8b903 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/debug.c @@ -0,0 +1,150 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "core.h" +#include "debug.h" + +int ath6kl_printk(const char *level, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + int rtn; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + rtn = printk("%sath6kl: %pV", level, &vaf); + + va_end(args); + + return rtn; +} + +#ifdef CONFIG_ATH6KL_DEBUG +void ath6kl_dump_registers(struct ath6kl_device *dev, + struct ath6kl_irq_proc_registers *irq_proc_reg, + struct ath6kl_irq_enable_reg *irq_enable_reg) +{ + + ath6kl_dbg(ATH6KL_DBG_ANY, ("<------- Register Table -------->\n")); + + if (irq_proc_reg != NULL) { + ath6kl_dbg(ATH6KL_DBG_ANY, + "Host Int status: 0x%x\n", + irq_proc_reg->host_int_status); + ath6kl_dbg(ATH6KL_DBG_ANY, + "CPU Int status: 0x%x\n", + irq_proc_reg->cpu_int_status); + ath6kl_dbg(ATH6KL_DBG_ANY, + "Error Int status: 0x%x\n", + irq_proc_reg->error_int_status); + ath6kl_dbg(ATH6KL_DBG_ANY, + "Counter Int status: 0x%x\n", + irq_proc_reg->counter_int_status); + ath6kl_dbg(ATH6KL_DBG_ANY, + "Mbox Frame: 0x%x\n", + irq_proc_reg->mbox_frame); + ath6kl_dbg(ATH6KL_DBG_ANY, + "Rx Lookahead Valid: 0x%x\n", + irq_proc_reg->rx_lkahd_valid); + ath6kl_dbg(ATH6KL_DBG_ANY, + "Rx Lookahead 0: 0x%x\n", + irq_proc_reg->rx_lkahd[0]); + ath6kl_dbg(ATH6KL_DBG_ANY, + "Rx Lookahead 1: 0x%x\n", + irq_proc_reg->rx_lkahd[1]); + + if (dev->ar->mbox_info.gmbox_addr != 0) { + /* + * If the target supports GMBOX hardware, dump some + * additional state. + */ + ath6kl_dbg(ATH6KL_DBG_ANY, + "GMBOX Host Int status 2: 0x%x\n", + irq_proc_reg->host_int_status2); + ath6kl_dbg(ATH6KL_DBG_ANY, + "GMBOX RX Avail: 0x%x\n", + irq_proc_reg->gmbox_rx_avail); + ath6kl_dbg(ATH6KL_DBG_ANY, + "GMBOX lookahead alias 0: 0x%x\n", + irq_proc_reg->rx_gmbox_lkahd_alias[0]); + ath6kl_dbg(ATH6KL_DBG_ANY, + "GMBOX lookahead alias 1: 0x%x\n", + irq_proc_reg->rx_gmbox_lkahd_alias[1]); + } + + } + + if (irq_enable_reg != NULL) { + ath6kl_dbg(ATH6KL_DBG_ANY, + "Int status Enable: 0x%x\n", + irq_enable_reg->int_status_en); + ath6kl_dbg(ATH6KL_DBG_ANY, "Counter Int status Enable: 0x%x\n", + irq_enable_reg->cntr_int_status_en); + } + ath6kl_dbg(ATH6KL_DBG_ANY, "<------------------------------->\n"); +} + +static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist) +{ + ath6kl_dbg(ATH6KL_DBG_ANY, + "--- endpoint: %d svc_id: 0x%X ---\n", + ep_dist->endpoint, ep_dist->svc_id); + ath6kl_dbg(ATH6KL_DBG_ANY, " dist_flags : 0x%X\n", + ep_dist->dist_flags); + ath6kl_dbg(ATH6KL_DBG_ANY, " cred_norm : %d\n", + ep_dist->cred_norm); + ath6kl_dbg(ATH6KL_DBG_ANY, " cred_min : %d\n", + ep_dist->cred_min); + ath6kl_dbg(ATH6KL_DBG_ANY, " credits : %d\n", + ep_dist->credits); + ath6kl_dbg(ATH6KL_DBG_ANY, " cred_assngd : %d\n", + ep_dist->cred_assngd); + ath6kl_dbg(ATH6KL_DBG_ANY, " seek_cred : %d\n", + ep_dist->seek_cred); + ath6kl_dbg(ATH6KL_DBG_ANY, " cred_sz : %d\n", + ep_dist->cred_sz); + ath6kl_dbg(ATH6KL_DBG_ANY, " cred_per_msg : %d\n", + ep_dist->cred_per_msg); + ath6kl_dbg(ATH6KL_DBG_ANY, " cred_to_dist : %d\n", + ep_dist->cred_to_dist); + ath6kl_dbg(ATH6KL_DBG_ANY, " txq_depth : %d\n", + get_queue_depth(&((struct htc_endpoint *) + ep_dist->htc_rsvd)->txq)); + ath6kl_dbg(ATH6KL_DBG_ANY, + "----------------------------------\n"); +} + +void dump_cred_dist_stats(struct htc_target *target) +{ + struct htc_endpoint_credit_dist *ep_list; + + if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_TRC)) + return; + + list_for_each_entry(ep_list, &target->cred_dist_list, list) + dump_cred_dist(ep_list); + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:%p dist:%p\n", + target->cred_dist_cntxt, NULL); + ath6kl_dbg(ATH6KL_DBG_TRC, "credit distribution, total : %d, free : %d\n", + target->cred_dist_cntxt->total_avail_credits, + target->cred_dist_cntxt->cur_free_credits); +} + +#endif diff --git a/drivers/net/wireless/ath/ath6kl/debug.h b/drivers/net/wireless/ath/ath6kl/debug.h new file mode 100644 index 000000000000..2e6058856a6a --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/debug.h @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef DEBUG_H +#define DEBUG_H + +#include "htc_hif.h" + +enum ATH6K_DEBUG_MASK { + ATH6KL_DBG_WLAN_CONNECT = BIT(0), /* wlan connect */ + ATH6KL_DBG_WLAN_SCAN = BIT(1), /* wlan scan */ + ATH6KL_DBG_WLAN_TX = BIT(2), /* wlan tx */ + ATH6KL_DBG_WLAN_RX = BIT(3), /* wlan rx */ + ATH6KL_DBG_BMI = BIT(4), /* bmi tracing */ + ATH6KL_DBG_HTC_SEND = BIT(5), /* htc send */ + ATH6KL_DBG_HTC_RECV = BIT(6), /* htc recv */ + ATH6KL_DBG_IRQ = BIT(7), /* interrupt processing */ + ATH6KL_DBG_PM = BIT(8), /* power management */ + ATH6KL_DBG_WLAN_NODE = BIT(9), /* general wlan node tracing */ + ATH6KL_DBG_WMI = BIT(10), /* wmi tracing */ + ATH6KL_DBG_TRC = BIT(11), /* generic func tracing */ + ATH6KL_DBG_SCATTER = BIT(12), /* hif scatter tracing */ + ATH6KL_DBG_WLAN_CFG = BIT(13), /* cfg80211 i/f file tracing */ + ATH6KL_DBG_RAW_BYTES = BIT(14), /* dump tx/rx and wmi frames */ + ATH6KL_DBG_ANY = 0xffffffff /* enable all logs */ +}; + +extern unsigned int debug_mask; +extern int ath6kl_printk(const char *level, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); + +#define ath6kl_info(fmt, ...) \ + ath6kl_printk(KERN_INFO, fmt, ##__VA_ARGS__) +#define ath6kl_err(fmt, ...) \ + ath6kl_printk(KERN_ERR, fmt, ##__VA_ARGS__) +#define ath6kl_warn(fmt, ...) \ + ath6kl_printk(KERN_WARNING, fmt, ##__VA_ARGS__) + +#define AR_DBG_LVL_CHECK(mask) (debug_mask & mask) + +#ifdef CONFIG_ATH6KL_DEBUG +#define ath6kl_dbg(mask, fmt, ...) \ + ({ \ + int rtn; \ + if (debug_mask & mask) \ + rtn = ath6kl_printk(KERN_DEBUG, fmt, ##__VA_ARGS__); \ + else \ + rtn = 0; \ + \ + rtn; \ + }) + +static inline void ath6kl_dbg_dump(enum ATH6K_DEBUG_MASK mask, + const char *msg, const void *buf, + size_t len) +{ + if (debug_mask & mask) { + ath6kl_dbg(mask, "%s\n", msg); + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); + } +} + +void ath6kl_dump_registers(struct ath6kl_device *dev, + struct ath6kl_irq_proc_registers *irq_proc_reg, + struct ath6kl_irq_enable_reg *irq_en_reg); +void dump_cred_dist_stats(struct htc_target *target); +#else +static inline int ath6kl_dbg(enum ATH6K_DEBUG_MASK dbg_mask, + const char *fmt, ...) +{ + return 0; +} + +static inline void ath6kl_dbg_dump(enum ATH6K_DEBUG_MASK mask, + const char *msg, const void *buf, + size_t len) +{ +} + +static inline void ath6kl_dump_registers(struct ath6kl_device *dev, + struct ath6kl_irq_proc_registers *irq_proc_reg, + struct ath6kl_irq_enable_reg *irq_en_reg) +{ + +} +static inline void dump_cred_dist_stats(struct htc_target *target) +{ +} +#endif + +#endif diff --git a/drivers/net/wireless/ath/ath6kl/hif-ops.h b/drivers/net/wireless/ath/ath6kl/hif-ops.h new file mode 100644 index 000000000000..ad4966917e84 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/hif-ops.h @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef HIF_OPS_H +#define HIF_OPS_H + +#include "hif.h" + +static inline int hif_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf, + u32 len, u32 request) +{ + return ar->hif_ops->read_write_sync(ar, addr, buf, len, request); +} + +static inline int hif_write_async(struct ath6kl *ar, u32 address, u8 *buffer, + u32 length, u32 request, + struct htc_packet *packet) +{ + return ar->hif_ops->write_async(ar, address, buffer, length, + request, packet); +} +static inline void ath6kl_hif_irq_enable(struct ath6kl *ar) +{ + return ar->hif_ops->irq_enable(ar); +} + +static inline void ath6kl_hif_irq_disable(struct ath6kl *ar) +{ + return ar->hif_ops->irq_disable(ar); +} + +static inline struct hif_scatter_req *hif_scatter_req_get(struct ath6kl *ar) +{ + return ar->hif_ops->scatter_req_get(ar); +} + +static inline void hif_scatter_req_add(struct ath6kl *ar, + struct hif_scatter_req *s_req) +{ + return ar->hif_ops->scatter_req_add(ar, s_req); +} + +static inline int ath6kl_hif_enable_scatter(struct ath6kl *ar, + struct hif_dev_scat_sup_info *info) +{ + return ar->hif_ops->enable_scatter(ar, info); +} + +static inline void ath6kl_hif_cleanup_scatter(struct ath6kl *ar) +{ + return ar->hif_ops->cleanup_scatter(ar); +} + +#endif diff --git a/drivers/net/wireless/ath/ath6kl/hif.h b/drivers/net/wireless/ath/ath6kl/hif.h new file mode 100644 index 000000000000..7d39c1769fe4 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/hif.h @@ -0,0 +1,216 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef HIF_H +#define HIF_H + +#include "common.h" +#include "core.h" + +#include <linux/scatterlist.h> + +#define BUS_REQUEST_MAX_NUM 64 +#define HIF_MBOX_BLOCK_SIZE 128 +#define HIF_MBOX0_BLOCK_SIZE 1 + +#define HIF_DMA_BUFFER_SIZE (32 * 1024) +#define CMD53_FIXED_ADDRESS 1 +#define CMD53_INCR_ADDRESS 2 + +#define MAX_SCATTER_REQUESTS 4 +#define MAX_SCATTER_ENTRIES_PER_REQ 16 +#define MAX_SCATTER_REQ_TRANSFER_SIZE (32 * 1024) + +#define MANUFACTURER_ID_AR6003_BASE 0x300 + /* SDIO manufacturer ID and Codes */ +#define MANUFACTURER_ID_ATH6KL_BASE_MASK 0xFF00 +#define MANUFACTURER_CODE 0x271 /* Atheros */ + +/* Mailbox address in SDIO address space */ +#define HIF_MBOX_BASE_ADDR 0x800 +#define HIF_MBOX_WIDTH 0x800 + +#define HIF_MBOX_END_ADDR (HTC_MAILBOX_NUM_MAX * HIF_MBOX_WIDTH - 1) + +/* version 1 of the chip has only a 12K extended mbox range */ +#define HIF_MBOX0_EXT_BASE_ADDR 0x4000 +#define HIF_MBOX0_EXT_WIDTH (12*1024) + +/* GMBOX addresses */ +#define HIF_GMBOX_BASE_ADDR 0x7000 +#define HIF_GMBOX_WIDTH 0x4000 + +/* interrupt mode register */ +#define CCCR_SDIO_IRQ_MODE_REG 0xF0 + +/* mode to enable special 4-bit interrupt assertion without clock */ +#define SDIO_IRQ_MODE_ASYNC_4BIT_IRQ (1 << 0) + +struct bus_request { + struct list_head list; + + /* request data */ + u32 address; + + u8 *buffer; + u32 length; + u32 request; + struct htc_packet *packet; + int status; + + /* this is a scatter request */ + struct hif_scatter_req *scat_req; +}; + +/* direction of transfer (read/write) */ +#define HIF_READ 0x00000001 +#define HIF_WRITE 0x00000002 +#define HIF_DIR_MASK (HIF_READ | HIF_WRITE) + +/* + * emode - This indicates the whether the command is to be executed in a + * blocking or non-blocking fashion (HIF_SYNCHRONOUS/ + * HIF_ASYNCHRONOUS). The read/write data paths in HTC have been + * implemented using the asynchronous mode allowing the the bus + * driver to indicate the completion of operation through the + * registered callback routine. The requirement primarily comes + * from the contexts these operations get called from (a driver's + * transmit context or the ISR context in case of receive). + * Support for both of these modes is essential. + */ +#define HIF_SYNCHRONOUS 0x00000010 +#define HIF_ASYNCHRONOUS 0x00000020 +#define HIF_EMODE_MASK (HIF_SYNCHRONOUS | HIF_ASYNCHRONOUS) + +/* + * dmode - An interface may support different kinds of commands based on + * the tradeoff between the amount of data it can carry and the + * setup time. Byte and Block modes are supported (HIF_BYTE_BASIS/ + * HIF_BLOCK_BASIS). In case of latter, the data is rounded off + * to the nearest block size by padding. The size of the block is + * configurable at compile time using the HIF_BLOCK_SIZE and is + * negotiated with the target during initialization after the + * ATH6KL interrupts are enabled. + */ +#define HIF_BYTE_BASIS 0x00000040 +#define HIF_BLOCK_BASIS 0x00000080 +#define HIF_DMODE_MASK (HIF_BYTE_BASIS | HIF_BLOCK_BASIS) + +/* + * amode - This indicates if the address has to be incremented on ATH6KL + * after every read/write operation (HIF?FIXED_ADDRESS/ + * HIF_INCREMENTAL_ADDRESS). + */ +#define HIF_FIXED_ADDRESS 0x00000100 +#define HIF_INCREMENTAL_ADDRESS 0x00000200 +#define HIF_AMODE_MASK (HIF_FIXED_ADDRESS | HIF_INCREMENTAL_ADDRESS) + +#define HIF_WR_ASYNC_BYTE_INC \ + (HIF_WRITE | HIF_ASYNCHRONOUS | \ + HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS) + +#define HIF_WR_ASYNC_BLOCK_INC \ + (HIF_WRITE | HIF_ASYNCHRONOUS | \ + HIF_BLOCK_BASIS | HIF_INCREMENTAL_ADDRESS) + +#define HIF_WR_SYNC_BYTE_FIX \ + (HIF_WRITE | HIF_SYNCHRONOUS | \ + HIF_BYTE_BASIS | HIF_FIXED_ADDRESS) + +#define HIF_WR_SYNC_BYTE_INC \ + (HIF_WRITE | HIF_SYNCHRONOUS | \ + HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS) + +#define HIF_WR_SYNC_BLOCK_INC \ + (HIF_WRITE | HIF_SYNCHRONOUS | \ + HIF_BLOCK_BASIS | HIF_INCREMENTAL_ADDRESS) + +#define HIF_RD_SYNC_BYTE_INC \ + (HIF_READ | HIF_SYNCHRONOUS | \ + HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS) + +#define HIF_RD_SYNC_BYTE_FIX \ + (HIF_READ | HIF_SYNCHRONOUS | \ + HIF_BYTE_BASIS | HIF_FIXED_ADDRESS) + +#define HIF_RD_ASYNC_BLOCK_FIX \ + (HIF_READ | HIF_ASYNCHRONOUS | \ + HIF_BLOCK_BASIS | HIF_FIXED_ADDRESS) + +#define HIF_RD_SYNC_BLOCK_FIX \ + (HIF_READ | HIF_SYNCHRONOUS | \ + HIF_BLOCK_BASIS | HIF_FIXED_ADDRESS) + +struct hif_scatter_item { + u8 *buf; + int len; + struct htc_packet *packet; +}; + +struct hif_scatter_req { + struct list_head list; + /* address for the read/write operation */ + u32 addr; + + /* request flags */ + u32 req; + + /* total length of entire transfer */ + u32 len; + + u32 flags; + void (*complete) (struct hif_scatter_req *); + int status; + struct htc_endpoint *ep; + int scat_entries; + + struct hif_scatter_req_priv *req_priv; + + /* bounce buffer for upper layers to copy to/from */ + u8 *virt_dma_buf; + + struct hif_scatter_item scat_list[1]; +}; + +struct hif_dev_scat_sup_info { + int (*rw_scat_func) (struct ath6kl *ar, struct hif_scatter_req *); + int max_scat_entries; + int max_xfer_szper_scatreq; +}; + +struct hif_scatter_req_priv { + struct bus_request *busrequest; + struct scatterlist sgentries[MAX_SCATTER_ENTRIES_PER_REQ]; +}; + +struct ath6kl_hif_ops { + int (*read_write_sync)(struct ath6kl *ar, u32 addr, u8 *buf, + u32 len, u32 request); + int (*write_async)(struct ath6kl *ar, u32 address, u8 *buffer, + u32 length, u32 request, struct htc_packet *packet); + + void (*irq_enable)(struct ath6kl *ar); + void (*irq_disable)(struct ath6kl *ar); + + struct hif_scatter_req *(*scatter_req_get)(struct ath6kl *ar); + void (*scatter_req_add)(struct ath6kl *ar, + struct hif_scatter_req *s_req); + int (*enable_scatter)(struct ath6kl *ar, + struct hif_dev_scat_sup_info *info); + void (*cleanup_scatter)(struct ath6kl *ar); +}; + +#endif diff --git a/drivers/net/wireless/ath/ath6kl/htc.c b/drivers/net/wireless/ath/ath6kl/htc.c new file mode 100644 index 000000000000..95c47bbd1d78 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/htc.c @@ -0,0 +1,2466 @@ +/* + * Copyright (c) 2007-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "core.h" +#include "htc_hif.h" +#include "debug.h" +#include "hif-ops.h" +#include <asm/unaligned.h> + +#define CALC_TXRX_PADDED_LEN(dev, len) (__ALIGN_MASK((len), (dev)->block_mask)) + +static void htc_prep_send_pkt(struct htc_packet *packet, u8 flags, int ctrl0, + int ctrl1) +{ + struct htc_frame_hdr *hdr; + + packet->buf -= HTC_HDR_LENGTH; + hdr = (struct htc_frame_hdr *)packet->buf; + + /* Endianess? */ + put_unaligned((u16)packet->act_len, &hdr->payld_len); + hdr->flags = flags; + hdr->eid = packet->endpoint; + hdr->ctrl[0] = ctrl0; + hdr->ctrl[1] = ctrl1; +} + +static void htc_reclaim_txctrl_buf(struct htc_target *target, + struct htc_packet *pkt) +{ + spin_lock_bh(&target->htc_lock); + list_add_tail(&pkt->list, &target->free_ctrl_txbuf); + spin_unlock_bh(&target->htc_lock); +} + +static struct htc_packet *htc_get_control_buf(struct htc_target *target, + bool tx) +{ + struct htc_packet *packet = NULL; + struct list_head *buf_list; + + buf_list = tx ? &target->free_ctrl_txbuf : &target->free_ctrl_rxbuf; + + spin_lock_bh(&target->htc_lock); + + if (list_empty(buf_list)) { + spin_unlock_bh(&target->htc_lock); + return NULL; + } + + packet = list_first_entry(buf_list, struct htc_packet, list); + list_del(&packet->list); + spin_unlock_bh(&target->htc_lock); + + if (tx) + packet->buf = packet->buf_start + HTC_HDR_LENGTH; + + return packet; +} + +static void htc_tx_comp_update(struct htc_target *target, + struct htc_endpoint *endpoint, + struct htc_packet *packet) +{ + packet->completion = NULL; + packet->buf += HTC_HDR_LENGTH; + + if (!packet->status) + return; + + ath6kl_err("req failed (status:%d, ep:%d, len:%d creds:%d)\n", + packet->status, packet->endpoint, packet->act_len, + packet->info.tx.cred_used); + + /* on failure to submit, reclaim credits for this packet */ + spin_lock_bh(&target->tx_lock); + endpoint->cred_dist.cred_to_dist += + packet->info.tx.cred_used; + endpoint->cred_dist.txq_depth = get_queue_depth(&endpoint->txq); + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:0x%p dist:0x%p\n", + target->cred_dist_cntxt, &target->cred_dist_list); + + ath6k_credit_distribute(target->cred_dist_cntxt, + &target->cred_dist_list, + HTC_CREDIT_DIST_SEND_COMPLETE); + + spin_unlock_bh(&target->tx_lock); +} + +static void htc_tx_complete(struct htc_endpoint *endpoint, + struct list_head *txq) +{ + if (list_empty(txq)) + return; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "send complete ep %d, (%d pkts)\n", + endpoint->eid, get_queue_depth(txq)); + + ath6kl_tx_complete(endpoint->target->dev->ar, txq); +} + +static void htc_tx_comp_handler(struct htc_target *target, + struct htc_packet *packet) +{ + struct htc_endpoint *endpoint = &target->endpoint[packet->endpoint]; + struct list_head container; + + htc_tx_comp_update(target, endpoint, packet); + INIT_LIST_HEAD(&container); + list_add_tail(&packet->list, &container); + /* do completion */ + htc_tx_complete(endpoint, &container); +} + +static void htc_async_tx_scat_complete(struct hif_scatter_req *scat_req) +{ + struct htc_endpoint *endpoint = scat_req->ep; + struct htc_target *target = endpoint->target; + struct htc_packet *packet; + struct list_head tx_compq; + int i; + + INIT_LIST_HEAD(&tx_compq); + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "htc_async_tx_scat_complete total len: %d entries: %d\n", + scat_req->len, scat_req->scat_entries); + + if (scat_req->status) + ath6kl_err("send scatter req failed: %d\n", scat_req->status); + + /* walk through the scatter list and process */ + for (i = 0; i < scat_req->scat_entries; i++) { + packet = scat_req->scat_list[i].packet; + if (!packet) { + WARN_ON(1); + return; + } + + packet->status = scat_req->status; + htc_tx_comp_update(target, endpoint, packet); + list_add_tail(&packet->list, &tx_compq); + } + + /* free scatter request */ + hif_scatter_req_add(target->dev->ar, scat_req); + + /* complete all packets */ + htc_tx_complete(endpoint, &tx_compq); +} + +static int htc_issue_send(struct htc_target *target, struct htc_packet *packet) +{ + int status; + bool sync = false; + u32 padded_len, send_len; + + if (!packet->completion) + sync = true; + + send_len = packet->act_len + HTC_HDR_LENGTH; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "%s: transmit len : %d (%s)\n", + __func__, send_len, sync ? "sync" : "async"); + + padded_len = CALC_TXRX_PADDED_LEN(target->dev, send_len); + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "DevSendPacket, padded len: %d mbox:0x%X (mode:%s)\n", + padded_len, + target->dev->ar->mbox_info.htc_addr, + sync ? "sync" : "async"); + + if (sync) { + status = hif_read_write_sync(target->dev->ar, + target->dev->ar->mbox_info.htc_addr, + packet->buf, padded_len, + HIF_WR_SYNC_BLOCK_INC); + + packet->status = status; + packet->buf += HTC_HDR_LENGTH; + } else + status = hif_write_async(target->dev->ar, + target->dev->ar->mbox_info.htc_addr, + packet->buf, padded_len, + HIF_WR_ASYNC_BLOCK_INC, packet); + + return status; +} + +static int htc_check_credits(struct htc_target *target, + struct htc_endpoint *ep, u8 *flags, + enum htc_endpoint_id eid, unsigned int len, + int *req_cred) +{ + + *req_cred = (len > target->tgt_cred_sz) ? + DIV_ROUND_UP(len, target->tgt_cred_sz) : 1; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "creds required:%d got:%d\n", + *req_cred, ep->cred_dist.credits); + + if (ep->cred_dist.credits < *req_cred) { + if (eid == ENDPOINT_0) + return -EINVAL; + + /* Seek more credits */ + ep->cred_dist.seek_cred = *req_cred - ep->cred_dist.credits; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:0x%p dist:0x%p\n", + target->cred_dist_cntxt, &ep->cred_dist); + + ath6k_seek_credits(target->cred_dist_cntxt, &ep->cred_dist); + + ep->cred_dist.seek_cred = 0; + + if (ep->cred_dist.credits < *req_cred) { + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "not enough credits for ep %d - leaving packet in queue\n", + eid); + return -EINVAL; + } + } + + ep->cred_dist.credits -= *req_cred; + ep->ep_st.cred_cosumd += *req_cred; + + /* When we are getting low on credits, ask for more */ + if (ep->cred_dist.credits < ep->cred_dist.cred_per_msg) { + ep->cred_dist.seek_cred = + ep->cred_dist.cred_per_msg - ep->cred_dist.credits; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:0x%p dist:0x%p\n", + target->cred_dist_cntxt, &ep->cred_dist); + + ath6k_seek_credits(target->cred_dist_cntxt, &ep->cred_dist); + + /* see if we were successful in getting more */ + if (ep->cred_dist.credits < ep->cred_dist.cred_per_msg) { + /* tell the target we need credits ASAP! */ + *flags |= HTC_FLAGS_NEED_CREDIT_UPDATE; + ep->ep_st.cred_low_indicate += 1; + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "host needs credits\n"); + } + } + + return 0; +} + +static void htc_tx_pkts_get(struct htc_target *target, + struct htc_endpoint *endpoint, + struct list_head *queue) +{ + int req_cred; + u8 flags; + struct htc_packet *packet; + unsigned int len; + + while (true) { + + flags = 0; + + if (list_empty(&endpoint->txq)) + break; + packet = list_first_entry(&endpoint->txq, struct htc_packet, + list); + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "got head pkt:0x%p , queue depth: %d\n", + packet, get_queue_depth(&endpoint->txq)); + + len = CALC_TXRX_PADDED_LEN(target->dev, + packet->act_len + HTC_HDR_LENGTH); + + if (htc_check_credits(target, endpoint, &flags, + packet->endpoint, len, &req_cred)) + break; + + /* now we can fully move onto caller's queue */ + packet = list_first_entry(&endpoint->txq, struct htc_packet, + list); + list_move_tail(&packet->list, queue); + + /* save the number of credits this packet consumed */ + packet->info.tx.cred_used = req_cred; + + /* all TX packets are handled asynchronously */ + packet->completion = htc_tx_comp_handler; + packet->context = target; + endpoint->ep_st.tx_issued += 1; + + /* save send flags */ + packet->info.tx.flags = flags; + packet->info.tx.seqno = endpoint->seqno; + endpoint->seqno++; + } +} + +/* See if the padded tx length falls on a credit boundary */ +static int htc_get_credit_padding(unsigned int cred_sz, int *len, + struct htc_endpoint *ep) +{ + int rem_cred, cred_pad; + + rem_cred = *len % cred_sz; + + /* No padding needed */ + if (!rem_cred) + return 0; + + if (!(ep->conn_flags & HTC_FLGS_TX_BNDL_PAD_EN)) + return -1; + + /* + * The transfer consumes a "partial" credit, this + * packet cannot be bundled unless we add + * additional "dummy" padding (max 255 bytes) to + * consume the entire credit. + */ + cred_pad = *len < cred_sz ? (cred_sz - *len) : rem_cred; + + if ((cred_pad > 0) && (cred_pad <= 255)) + *len += cred_pad; + else + /* The amount of padding is too large, send as non-bundled */ + return -1; + + return cred_pad; +} + +static int htc_setup_send_scat_list(struct htc_target *target, + struct htc_endpoint *endpoint, + struct hif_scatter_req *scat_req, + int n_scat, + struct list_head *queue) +{ + struct htc_packet *packet; + int i, len, rem_scat, cred_pad; + int status = 0; + + rem_scat = target->dev->max_tx_bndl_sz; + + for (i = 0; i < n_scat; i++) { + scat_req->scat_list[i].packet = NULL; + + if (list_empty(queue)) + break; + + packet = list_first_entry(queue, struct htc_packet, list); + len = CALC_TXRX_PADDED_LEN(target->dev, + packet->act_len + HTC_HDR_LENGTH); + + cred_pad = htc_get_credit_padding(target->tgt_cred_sz, + &len, endpoint); + if (cred_pad < 0) { + status = -EINVAL; + break; + } + + if (rem_scat < len) { + /* exceeds what we can transfer */ + status = -ENOSPC; + break; + } + + rem_scat -= len; + /* now remove it from the queue */ + packet = list_first_entry(queue, struct htc_packet, list); + list_del(&packet->list); + + scat_req->scat_list[i].packet = packet; + /* prepare packet and flag message as part of a send bundle */ + htc_prep_send_pkt(packet, + packet->info.tx.flags | HTC_FLAGS_SEND_BUNDLE, + cred_pad, packet->info.tx.seqno); + scat_req->scat_list[i].buf = packet->buf; + scat_req->scat_list[i].len = len; + + scat_req->len += len; + scat_req->scat_entries++; + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "%d, adding pkt : 0x%p len:%d (remaining space:%d)\n", + i, packet, len, rem_scat); + } + + /* Roll back scatter setup in case of any failure */ + if (status || (scat_req->scat_entries < HTC_MIN_HTC_MSGS_TO_BUNDLE)) { + for (i = scat_req->scat_entries - 1; i >= 0; i--) { + packet = scat_req->scat_list[i].packet; + if (packet) { + packet->buf += HTC_HDR_LENGTH; + list_add(&packet->list, queue); + } + } + return -EINVAL; + } + + return 0; +} + +/* + * htc_issue_send_bundle: drain a queue and send as bundles + * this function may return without fully draining the queue + * when + * + * 1. scatter resources are exhausted + * 2. a message that will consume a partial credit will stop the + * bundling process early + * 3. we drop below the minimum number of messages for a bundle + */ +static void htc_issue_send_bundle(struct htc_endpoint *endpoint, + struct list_head *queue, + int *sent_bundle, int *n_bundle_pkts) +{ + struct htc_target *target = endpoint->target; + struct hif_scatter_req *scat_req = NULL; + struct hif_dev_scat_sup_info hif_info; + int n_scat, n_sent_bundle = 0, tot_pkts_bundle = 0; + + hif_info = target->dev->hif_scat_info; + + while (true) { + n_scat = get_queue_depth(queue); + n_scat = min(n_scat, target->msg_per_bndl_max); + + if (n_scat < HTC_MIN_HTC_MSGS_TO_BUNDLE) + /* not enough to bundle */ + break; + + scat_req = hif_scatter_req_get(target->dev->ar); + + if (!scat_req) { + /* no scatter resources */ + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "no more scatter resources\n"); + break; + } + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "pkts to scatter: %d\n", + n_scat); + + scat_req->len = 0; + scat_req->scat_entries = 0; + + if (htc_setup_send_scat_list(target, endpoint, scat_req, + n_scat, queue)) { + hif_scatter_req_add(target->dev->ar, scat_req); + break; + } + + /* send path is always asynchronous */ + scat_req->complete = htc_async_tx_scat_complete; + scat_req->ep = endpoint; + n_sent_bundle++; + tot_pkts_bundle += scat_req->scat_entries; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "send scatter total bytes: %d , entries: %d\n", + scat_req->len, scat_req->scat_entries); + ath6kldev_submit_scat_req(target->dev, scat_req, false); + } + + *sent_bundle = n_sent_bundle; + *n_bundle_pkts = tot_pkts_bundle; + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "htc_issue_send_bundle (sent:%d)\n", + n_sent_bundle); + + return; +} + +static void htc_tx_from_ep_txq(struct htc_target *target, + struct htc_endpoint *endpoint) +{ + struct list_head txq; + struct htc_packet *packet; + int bundle_sent; + int n_pkts_bundle; + + spin_lock_bh(&target->tx_lock); + + endpoint->tx_proc_cnt++; + if (endpoint->tx_proc_cnt > 1) { + endpoint->tx_proc_cnt--; + spin_unlock_bh(&target->tx_lock); + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "htc_try_send (busy)\n"); + return; + } + + /* + * drain the endpoint TX queue for transmission as long + * as we have enough credits. + */ + INIT_LIST_HEAD(&txq); + + while (true) { + + if (list_empty(&endpoint->txq)) + break; + + htc_tx_pkts_get(target, endpoint, &txq); + + if (list_empty(&txq)) + break; + + spin_unlock_bh(&target->tx_lock); + + bundle_sent = 0; + n_pkts_bundle = 0; + + while (true) { + /* try to send a bundle on each pass */ + if ((target->tx_bndl_enable) && + (get_queue_depth(&txq) >= + HTC_MIN_HTC_MSGS_TO_BUNDLE)) { + int temp1 = 0, temp2 = 0; + + htc_issue_send_bundle(endpoint, &txq, + &temp1, &temp2); + bundle_sent += temp1; + n_pkts_bundle += temp2; + } + + if (list_empty(&txq)) + break; + + packet = list_first_entry(&txq, struct htc_packet, + list); + list_del(&packet->list); + + htc_prep_send_pkt(packet, packet->info.tx.flags, + 0, packet->info.tx.seqno); + htc_issue_send(target, packet); + } + + spin_lock_bh(&target->tx_lock); + + endpoint->ep_st.tx_bundles += bundle_sent; + endpoint->ep_st.tx_pkt_bundled += n_pkts_bundle; + } + + endpoint->tx_proc_cnt = 0; + spin_unlock_bh(&target->tx_lock); +} + +static bool htc_try_send(struct htc_target *target, + struct htc_endpoint *endpoint, + struct htc_packet *tx_pkt) +{ + struct htc_ep_callbacks ep_cb; + int txq_depth; + bool overflow = false; + + ep_cb = endpoint->ep_cb; + + spin_lock_bh(&target->tx_lock); + txq_depth = get_queue_depth(&endpoint->txq); + spin_unlock_bh(&target->tx_lock); + + if (txq_depth >= endpoint->max_txq_depth) + overflow = true; + + if (overflow) + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "ep %d, tx queue will overflow :%d , tx depth:%d, max:%d\n", + endpoint->eid, overflow, txq_depth, + endpoint->max_txq_depth); + + if (overflow && ep_cb.tx_full) { + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "indicating overflowed tx packet: 0x%p\n", tx_pkt); + + if (ep_cb.tx_full(endpoint->target, tx_pkt) == + HTC_SEND_FULL_DROP) { + endpoint->ep_st.tx_dropped += 1; + return false; + } + } + + spin_lock_bh(&target->tx_lock); + list_add_tail(&tx_pkt->list, &endpoint->txq); + spin_unlock_bh(&target->tx_lock); + + htc_tx_from_ep_txq(target, endpoint); + + return true; +} + +static void htc_chk_ep_txq(struct htc_target *target) +{ + struct htc_endpoint *endpoint; + struct htc_endpoint_credit_dist *cred_dist; + + /* + * Run through the credit distribution list to see if there are + * packets queued. NOTE: no locks need to be taken since the + * distribution list is not dynamic (cannot be re-ordered) and we + * are not modifying any state. + */ + list_for_each_entry(cred_dist, &target->cred_dist_list, list) { + endpoint = (struct htc_endpoint *)cred_dist->htc_rsvd; + + spin_lock_bh(&target->tx_lock); + if (!list_empty(&endpoint->txq)) { + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "ep %d has %d credits and %d packets in tx queue\n", + cred_dist->endpoint, + endpoint->cred_dist.credits, + get_queue_depth(&endpoint->txq)); + spin_unlock_bh(&target->tx_lock); + /* + * Try to start the stalled queue, this list is + * ordered by priority. If there are credits + * available the highest priority queue will get a + * chance to reclaim credits from lower priority + * ones. + */ + htc_tx_from_ep_txq(target, endpoint); + spin_lock_bh(&target->tx_lock); + } + spin_unlock_bh(&target->tx_lock); + } +} + +static int htc_setup_tx_complete(struct htc_target *target) +{ + struct htc_packet *send_pkt = NULL; + int status; + + send_pkt = htc_get_control_buf(target, true); + + if (!send_pkt) + return -ENOMEM; + + if (target->htc_tgt_ver >= HTC_VERSION_2P1) { + struct htc_setup_comp_ext_msg *setup_comp_ext; + u32 flags = 0; + + setup_comp_ext = + (struct htc_setup_comp_ext_msg *)send_pkt->buf; + memset(setup_comp_ext, 0, sizeof(*setup_comp_ext)); + setup_comp_ext->msg_id = + cpu_to_le16(HTC_MSG_SETUP_COMPLETE_EX_ID); + + if (target->msg_per_bndl_max > 0) { + /* Indicate HTC bundling to the target */ + flags |= HTC_SETUP_COMP_FLG_RX_BNDL_EN; + setup_comp_ext->msg_per_rxbndl = + target->msg_per_bndl_max; + } + + memcpy(&setup_comp_ext->flags, &flags, + sizeof(setup_comp_ext->flags)); + set_htc_pkt_info(send_pkt, NULL, (u8 *) setup_comp_ext, + sizeof(struct htc_setup_comp_ext_msg), + ENDPOINT_0, HTC_SERVICE_TX_PACKET_TAG); + + } else { + struct htc_setup_comp_msg *setup_comp; + setup_comp = (struct htc_setup_comp_msg *)send_pkt->buf; + memset(setup_comp, 0, sizeof(struct htc_setup_comp_msg)); + setup_comp->msg_id = cpu_to_le16(HTC_MSG_SETUP_COMPLETE_ID); + set_htc_pkt_info(send_pkt, NULL, (u8 *) setup_comp, + sizeof(struct htc_setup_comp_msg), + ENDPOINT_0, HTC_SERVICE_TX_PACKET_TAG); + } + + /* we want synchronous operation */ + send_pkt->completion = NULL; + htc_prep_send_pkt(send_pkt, 0, 0, 0); + status = htc_issue_send(target, send_pkt); + + if (send_pkt != NULL) + htc_reclaim_txctrl_buf(target, send_pkt); + + return status; +} + +void htc_set_credit_dist(struct htc_target *target, + struct htc_credit_state_info *cred_dist_cntxt, + u16 srvc_pri_order[], int list_len) +{ + struct htc_endpoint *endpoint; + int i, ep; + + target->cred_dist_cntxt = cred_dist_cntxt; + + list_add_tail(&target->endpoint[ENDPOINT_0].cred_dist.list, + &target->cred_dist_list); + + for (i = 0; i < list_len; i++) { + for (ep = ENDPOINT_1; ep < ENDPOINT_MAX; ep++) { + endpoint = &target->endpoint[ep]; + if (endpoint->svc_id == srvc_pri_order[i]) { + list_add_tail(&endpoint->cred_dist.list, + &target->cred_dist_list); + break; + } + } + if (ep >= ENDPOINT_MAX) { + WARN_ON(1); + return; + } + } +} + +int htc_tx(struct htc_target *target, struct htc_packet *packet) +{ + struct htc_endpoint *endpoint; + struct list_head queue; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "htc_tx: ep id: %d, buf: 0x%p, len: %d\n", + packet->endpoint, packet->buf, packet->act_len); + + if (packet->endpoint >= ENDPOINT_MAX) { + WARN_ON(1); + return -EINVAL; + } + + endpoint = &target->endpoint[packet->endpoint]; + + if (!htc_try_send(target, endpoint, packet)) { + packet->status = (target->htc_flags & HTC_OP_STATE_STOPPING) ? + -ECANCELED : -ENOSPC; + INIT_LIST_HEAD(&queue); + list_add(&packet->list, &queue); + htc_tx_complete(endpoint, &queue); + } + + return 0; +} + +/* flush endpoint TX queue */ +void htc_flush_txep(struct htc_target *target, + enum htc_endpoint_id eid, u16 tag) +{ + struct htc_packet *packet, *tmp_pkt; + struct list_head discard_q, container; + struct htc_endpoint *endpoint = &target->endpoint[eid]; + + if (!endpoint->svc_id) { + WARN_ON(1); + return; + } + + /* initialize the discard queue */ + INIT_LIST_HEAD(&discard_q); + + spin_lock_bh(&target->tx_lock); + + list_for_each_entry_safe(packet, tmp_pkt, &endpoint->txq, list) { + if ((tag == HTC_TX_PACKET_TAG_ALL) || + (tag == packet->info.tx.tag)) + list_move_tail(&packet->list, &discard_q); + } + + spin_unlock_bh(&target->tx_lock); + + list_for_each_entry_safe(packet, tmp_pkt, &discard_q, list) { + packet->status = -ECANCELED; + list_del(&packet->list); + ath6kl_dbg(ATH6KL_DBG_TRC, + "flushing tx pkt:0x%p, len:%d, ep:%d tag:0x%X\n", + packet, packet->act_len, + packet->endpoint, packet->info.tx.tag); + + INIT_LIST_HEAD(&container); + list_add_tail(&packet->list, &container); + htc_tx_complete(endpoint, &container); + } + +} + +static void htc_flush_txep_all(struct htc_target *target) +{ + struct htc_endpoint *endpoint; + int i; + + dump_cred_dist_stats(target); + + for (i = ENDPOINT_0; i < ENDPOINT_MAX; i++) { + endpoint = &target->endpoint[i]; + if (endpoint->svc_id == 0) + /* not in use.. */ + continue; + htc_flush_txep(target, i, HTC_TX_PACKET_TAG_ALL); + } +} + +void htc_indicate_activity_change(struct htc_target *target, + enum htc_endpoint_id eid, bool active) +{ + struct htc_endpoint *endpoint = &target->endpoint[eid]; + bool dist = false; + + if (endpoint->svc_id == 0) { + WARN_ON(1); + return; + } + + spin_lock_bh(&target->tx_lock); + + if (active) { + if (!(endpoint->cred_dist.dist_flags & HTC_EP_ACTIVE)) { + endpoint->cred_dist.dist_flags |= HTC_EP_ACTIVE; + dist = true; + } + } else { + if (endpoint->cred_dist.dist_flags & HTC_EP_ACTIVE) { + endpoint->cred_dist.dist_flags &= ~HTC_EP_ACTIVE; + dist = true; + } + } + + if (dist) { + endpoint->cred_dist.txq_depth = + get_queue_depth(&endpoint->txq); + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:0x%p dist:0x%p\n", + target->cred_dist_cntxt, &target->cred_dist_list); + + ath6k_credit_distribute(target->cred_dist_cntxt, + &target->cred_dist_list, + HTC_CREDIT_DIST_ACTIVITY_CHANGE); + } + + spin_unlock_bh(&target->tx_lock); + + if (dist && !active) + htc_chk_ep_txq(target); +} + +/* HTC Rx */ + +static inline void htc_update_rx_stats(struct htc_endpoint *endpoint, + int n_look_ahds) +{ + endpoint->ep_st.rx_pkts++; + if (n_look_ahds == 1) + endpoint->ep_st.rx_lkahds++; + else if (n_look_ahds > 1) + endpoint->ep_st.rx_bundle_lkahd++; +} + +static inline bool htc_valid_rx_frame_len(struct htc_target *target, + enum htc_endpoint_id eid, int len) +{ + return (eid == target->dev->ar->ctrl_ep) ? + len <= ATH6KL_BUFFER_SIZE : len <= ATH6KL_AMSDU_BUFFER_SIZE; +} + +static int htc_add_rxbuf(struct htc_target *target, struct htc_packet *packet) +{ + struct list_head queue; + + INIT_LIST_HEAD(&queue); + list_add_tail(&packet->list, &queue); + return htc_add_rxbuf_multiple(target, &queue); +} + +static void htc_reclaim_rxbuf(struct htc_target *target, + struct htc_packet *packet, + struct htc_endpoint *ep) +{ + if (packet->info.rx.rx_flags & HTC_RX_PKT_NO_RECYCLE) { + htc_rxpkt_reset(packet); + packet->status = -ECANCELED; + ep->ep_cb.rx(ep->target, packet); + } else { + htc_rxpkt_reset(packet); + htc_add_rxbuf((void *)(target), packet); + } +} + +static void reclaim_rx_ctrl_buf(struct htc_target *target, + struct htc_packet *packet) +{ + spin_lock_bh(&target->htc_lock); + list_add_tail(&packet->list, &target->free_ctrl_rxbuf); + spin_unlock_bh(&target->htc_lock); +} + +static int dev_rx_pkt(struct htc_target *target, struct htc_packet *packet, + u32 rx_len) +{ + struct ath6kl_device *dev = target->dev; + u32 padded_len; + int status; + + padded_len = CALC_TXRX_PADDED_LEN(dev, rx_len); + + if (padded_len > packet->buf_len) { + ath6kl_err("not enough receive space for packet - padlen:%d recvlen:%d bufferlen:%d\n", + padded_len, rx_len, packet->buf_len); + return -ENOMEM; + } + + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "dev_rx_pkt (0x%p : hdr:0x%X) padded len: %d mbox:0x%X (mode:%s)\n", + packet, packet->info.rx.exp_hdr, + padded_len, dev->ar->mbox_info.htc_addr, "sync"); + + status = hif_read_write_sync(dev->ar, + dev->ar->mbox_info.htc_addr, + packet->buf, padded_len, + HIF_RD_SYNC_BLOCK_FIX); + + packet->status = status; + + return status; +} + +/* + * optimization for recv packets, we can indicate a + * "hint" that there are more single-packets to fetch + * on this endpoint. + */ +static void set_rxpkt_indication_flag(u32 lk_ahd, + struct htc_endpoint *endpoint, + struct htc_packet *packet) +{ + struct htc_frame_hdr *htc_hdr = (struct htc_frame_hdr *)&lk_ahd; + + if (htc_hdr->eid == packet->endpoint) { + if (!list_empty(&endpoint->rx_bufq)) + packet->info.rx.indicat_flags |= + HTC_RX_FLAGS_INDICATE_MORE_PKTS; + } +} + +static void chk_rx_water_mark(struct htc_endpoint *endpoint) +{ + struct htc_ep_callbacks ep_cb = endpoint->ep_cb; + + if (ep_cb.rx_refill_thresh > 0) { + spin_lock_bh(&endpoint->target->rx_lock); + if (get_queue_depth(&endpoint->rx_bufq) + < ep_cb.rx_refill_thresh) { + spin_unlock_bh(&endpoint->target->rx_lock); + ep_cb.rx_refill(endpoint->target, endpoint->eid); + return; + } + spin_unlock_bh(&endpoint->target->rx_lock); + } +} + +/* This function is called with rx_lock held */ +static int htc_setup_rxpkts(struct htc_target *target, struct htc_endpoint *ep, + u32 *lk_ahds, struct list_head *queue, int n_msg) +{ + struct htc_packet *packet; + /* FIXME: type of lk_ahds can't be right */ + struct htc_frame_hdr *htc_hdr = (struct htc_frame_hdr *)lk_ahds; + struct htc_ep_callbacks ep_cb; + int status = 0, j, full_len; + bool no_recycle; + + full_len = CALC_TXRX_PADDED_LEN(target->dev, + le16_to_cpu(htc_hdr->payld_len) + + sizeof(*htc_hdr)); + + if (!htc_valid_rx_frame_len(target, ep->eid, full_len)) { + ath6kl_warn("Rx buffer requested with invalid length\n"); + return -EINVAL; + } + + ep_cb = ep->ep_cb; + for (j = 0; j < n_msg; j++) { + + /* + * Reset flag, any packets allocated using the + * rx_alloc() API cannot be recycled on + * cleanup,they must be explicitly returned. + */ + no_recycle = false; + + if (ep_cb.rx_allocthresh && + (full_len > ep_cb.rx_alloc_thresh)) { + ep->ep_st.rx_alloc_thresh_hit += 1; + ep->ep_st.rxalloc_thresh_byte += + le16_to_cpu(htc_hdr->payld_len); + + spin_unlock_bh(&target->rx_lock); + no_recycle = true; + + packet = ep_cb.rx_allocthresh(ep->target, ep->eid, + full_len); + spin_lock_bh(&target->rx_lock); + } else { + /* refill handler is being used */ + if (list_empty(&ep->rx_bufq)) { + if (ep_cb.rx_refill) { + spin_unlock_bh(&target->rx_lock); + ep_cb.rx_refill(ep->target, ep->eid); + spin_lock_bh(&target->rx_lock); + } + } + + if (list_empty(&ep->rx_bufq)) + packet = NULL; + else { + packet = list_first_entry(&ep->rx_bufq, + struct htc_packet, list); + list_del(&packet->list); + } + } + + if (!packet) { + target->rx_st_flags |= HTC_RECV_WAIT_BUFFERS; + target->ep_waiting = ep->eid; + return -ENOSPC; + } + + /* clear flags */ + packet->info.rx.rx_flags = 0; + packet->info.rx.indicat_flags = 0; + packet->status = 0; + + if (no_recycle) + /* + * flag that these packets cannot be + * recycled, they have to be returned to + * the user + */ + packet->info.rx.rx_flags |= HTC_RX_PKT_NO_RECYCLE; + + /* Caller needs to free this upon any failure */ + list_add_tail(&packet->list, queue); + + if (target->htc_flags & HTC_OP_STATE_STOPPING) { + status = -ECANCELED; + break; + } + + if (j) { + packet->info.rx.rx_flags |= HTC_RX_PKT_REFRESH_HDR; + packet->info.rx.exp_hdr = 0xFFFFFFFF; + } else + /* set expected look ahead */ + packet->info.rx.exp_hdr = *lk_ahds; + + packet->act_len = le16_to_cpu(htc_hdr->payld_len) + + HTC_HDR_LENGTH; + } + + return status; +} + +static int alloc_and_prep_rxpkts(struct htc_target *target, + u32 lk_ahds[], int msg, + struct htc_endpoint *endpoint, + struct list_head *queue) +{ + int status = 0; + struct htc_packet *packet, *tmp_pkt; + struct htc_frame_hdr *htc_hdr; + int i, n_msg; + + spin_lock_bh(&target->rx_lock); + + for (i = 0; i < msg; i++) { + + htc_hdr = (struct htc_frame_hdr *)&lk_ahds[i]; + + if (htc_hdr->eid >= ENDPOINT_MAX) { + ath6kl_err("invalid ep in look-ahead: %d\n", + htc_hdr->eid); + status = -ENOMEM; + break; + } + + if (htc_hdr->eid != endpoint->eid) { + ath6kl_err("invalid ep in look-ahead: %d should be : %d (index:%d)\n", + htc_hdr->eid, endpoint->eid, i); + status = -ENOMEM; + break; + } + + if (le16_to_cpu(htc_hdr->payld_len) > HTC_MAX_PAYLOAD_LENGTH) { + ath6kl_err("payload len %d exceeds max htc : %d !\n", + htc_hdr->payld_len, + (u32) HTC_MAX_PAYLOAD_LENGTH); + status = -ENOMEM; + break; + } + + if (endpoint->svc_id == 0) { + ath6kl_err("ep %d is not connected !\n", htc_hdr->eid); + status = -ENOMEM; + break; + } + + if (htc_hdr->flags & HTC_FLG_RX_BNDL_CNT) { + /* + * HTC header indicates that every packet to follow + * has the same padded length so that it can be + * optimally fetched as a full bundle. + */ + n_msg = (htc_hdr->flags & HTC_FLG_RX_BNDL_CNT) >> + HTC_FLG_RX_BNDL_CNT_S; + + /* the count doesn't include the starter frame */ + n_msg++; + if (n_msg > target->msg_per_bndl_max) { + status = -ENOMEM; + break; + } + + endpoint->ep_st.rx_bundle_from_hdr += 1; + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "htc hdr indicates :%d msg can be fetched as a bundle\n", + n_msg); + } else + /* HTC header only indicates 1 message to fetch */ + n_msg = 1; + + /* Setup packet buffers for each message */ + status = htc_setup_rxpkts(target, endpoint, &lk_ahds[i], queue, + n_msg); + + /* + * This is due to unavailabilty of buffers to rx entire data. + * Return no error so that free buffers from queue can be used + * to receive partial data. + */ + if (status == -ENOSPC) { + spin_unlock_bh(&target->rx_lock); + return 0; + } + + if (status) + break; + } + + spin_unlock_bh(&target->rx_lock); + + if (status) { + list_for_each_entry_safe(packet, tmp_pkt, queue, list) { + list_del(&packet->list); + htc_reclaim_rxbuf(target, packet, + &target->endpoint[packet->endpoint]); + } + } + + return status; +} + +static void htc_ctrl_rx(struct htc_target *context, struct htc_packet *packets) +{ + if (packets->endpoint != ENDPOINT_0) { + WARN_ON(1); + return; + } + + if (packets->status == -ECANCELED) { + reclaim_rx_ctrl_buf(context, packets); + return; + } + + if (packets->act_len > 0) { + ath6kl_err("htc_ctrl_rx, got message with len:%zu\n", + packets->act_len + HTC_HDR_LENGTH); + + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, + "Unexpected ENDPOINT 0 Message", + packets->buf - HTC_HDR_LENGTH, + packets->act_len + HTC_HDR_LENGTH); + } + + htc_reclaim_rxbuf(context, packets, &context->endpoint[0]); +} + +static void htc_proc_cred_rpt(struct htc_target *target, + struct htc_credit_report *rpt, + int n_entries, + enum htc_endpoint_id from_ep) +{ + struct htc_endpoint *endpoint; + int tot_credits = 0, i; + bool dist = false; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "htc_proc_cred_rpt, credit report entries:%d\n", n_entries); + + spin_lock_bh(&target->tx_lock); + + for (i = 0; i < n_entries; i++, rpt++) { + if (rpt->eid >= ENDPOINT_MAX) { + WARN_ON(1); + spin_unlock_bh(&target->tx_lock); + return; + } + + endpoint = &target->endpoint[rpt->eid]; + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, " ep %d got %d credits\n", + rpt->eid, rpt->credits); + + endpoint->ep_st.tx_cred_rpt += 1; + endpoint->ep_st.cred_retnd += rpt->credits; + + if (from_ep == rpt->eid) { + /* + * This credit report arrived on the same endpoint + * indicating it arrived in an RX packet. + */ + endpoint->ep_st.cred_from_rx += rpt->credits; + endpoint->ep_st.cred_rpt_from_rx += 1; + } else if (from_ep == ENDPOINT_0) { + /* credit arrived on endpoint 0 as a NULL message */ + endpoint->ep_st.cred_from_ep0 += rpt->credits; + endpoint->ep_st.cred_rpt_ep0 += 1; + } else { + endpoint->ep_st.cred_from_other += rpt->credits; + endpoint->ep_st.cred_rpt_from_other += 1; + } + + if (ENDPOINT_0 == rpt->eid) + /* always give endpoint 0 credits back */ + endpoint->cred_dist.credits += rpt->credits; + else { + endpoint->cred_dist.cred_to_dist += rpt->credits; + dist = true; + } + + /* + * Refresh tx depth for distribution function that will + * recover these credits NOTE: this is only valid when + * there are credits to recover! + */ + endpoint->cred_dist.txq_depth = + get_queue_depth(&endpoint->txq); + + tot_credits += rpt->credits; + } + + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, + "report indicated %d credits to distribute\n", + tot_credits); + + if (dist) { + /* + * This was a credit return based on a completed send + * operations note, this is done with the lock held + */ + ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:0x%p dist:0x%p\n", + target->cred_dist_cntxt, &target->cred_dist_list); + + ath6k_credit_distribute(target->cred_dist_cntxt, + &target->cred_dist_list, + HTC_CREDIT_DIST_SEND_COMPLETE); + } + + spin_unlock_bh(&target->tx_lock); + + if (tot_credits) + htc_chk_ep_txq(target); +} + +static int htc_parse_trailer(struct htc_target *target, + struct htc_record_hdr *record, + u8 *record_buf, u32 *next_lk_ahds, + enum htc_endpoint_id endpoint, + int *n_lk_ahds) +{ + struct htc_bundle_lkahd_rpt *bundle_lkahd_rpt; + struct htc_lookahead_report *lk_ahd; + int len; + + switch (record->rec_id) { + case HTC_RECORD_CREDITS: + len = record->len / sizeof(struct htc_credit_report); + if (!len) { + WARN_ON(1); + return -EINVAL; + } + + htc_proc_cred_rpt(target, + (struct htc_credit_report *) record_buf, + len, endpoint); + break; + case HTC_RECORD_LOOKAHEAD: + len = record->len / sizeof(*lk_ahd); + if (!len) { + WARN_ON(1); + return -EINVAL; + } + + lk_ahd = (struct htc_lookahead_report *) record_buf; + if ((lk_ahd->pre_valid == ((~lk_ahd->post_valid) & 0xFF)) + && next_lk_ahds) { + + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "lk_ahd report found (pre valid:0x%X, post valid:0x%X)\n", + lk_ahd->pre_valid, lk_ahd->post_valid); + + /* look ahead bytes are valid, copy them over */ + memcpy((u8 *)&next_lk_ahds[0], lk_ahd->lk_ahd, 4); + + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "Next Look Ahead", + next_lk_ahds, 4); + + *n_lk_ahds = 1; + } + break; + case HTC_RECORD_LOOKAHEAD_BUNDLE: + len = record->len / sizeof(*bundle_lkahd_rpt); + if (!len || (len > HTC_HOST_MAX_MSG_PER_BUNDLE)) { + WARN_ON(1); + return -EINVAL; + } + + if (next_lk_ahds) { + int i; + + bundle_lkahd_rpt = + (struct htc_bundle_lkahd_rpt *) record_buf; + + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "Bundle lk_ahd", + record_buf, record->len); + + for (i = 0; i < len; i++) { + memcpy((u8 *)&next_lk_ahds[i], + bundle_lkahd_rpt->lk_ahd, 4); + bundle_lkahd_rpt++; + } + + *n_lk_ahds = i; + } + break; + default: + ath6kl_err("unhandled record: id:%d len:%d\n", + record->rec_id, record->len); + break; + } + + return 0; + +} + +static int htc_proc_trailer(struct htc_target *target, + u8 *buf, int len, u32 *next_lk_ahds, + int *n_lk_ahds, enum htc_endpoint_id endpoint) +{ + struct htc_record_hdr *record; + int orig_len; + int status; + u8 *record_buf; + u8 *orig_buf; + + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, "+htc_proc_trailer (len:%d)\n", len); + + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "Recv Trailer", buf, len); + + orig_buf = buf; + orig_len = len; + status = 0; + + while (len > 0) { + + if (len < sizeof(struct htc_record_hdr)) { + status = -ENOMEM; + break; + } + /* these are byte aligned structs */ + record = (struct htc_record_hdr *) buf; + len -= sizeof(struct htc_record_hdr); + buf += sizeof(struct htc_record_hdr); + + if (record->len > len) { + ath6kl_err("invalid record len: %d (id:%d) buf has: %d bytes left\n", + record->len, record->rec_id, len); + status = -ENOMEM; + break; + } + record_buf = buf; + + status = htc_parse_trailer(target, record, record_buf, + next_lk_ahds, endpoint, n_lk_ahds); + + if (status) + break; + + /* advance buffer past this record for next time around */ + buf += record->len; + len -= record->len; + } + + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "BAD Recv Trailer", + orig_buf, orig_len); + + return status; +} + +static int htc_proc_rxhdr(struct htc_target *target, + struct htc_packet *packet, + u32 *next_lkahds, int *n_lkahds) +{ + int status = 0; + u16 payload_len; + u32 lk_ahd; + struct htc_frame_hdr *htc_hdr = (struct htc_frame_hdr *)packet->buf; + + if (n_lkahds != NULL) + *n_lkahds = 0; + + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "HTC Recv PKT", packet->buf, + packet->act_len); + + /* + * NOTE: we cannot assume the alignment of buf, so we use the safe + * macros to retrieve 16 bit fields. + */ + payload_len = le16_to_cpu(get_unaligned(&htc_hdr->payld_len)); + + memcpy((u8 *)&lk_ahd, packet->buf, sizeof(lk_ahd)); + + if (packet->info.rx.rx_flags & HTC_RX_PKT_REFRESH_HDR) { + /* + * Refresh the expected header and the actual length as it + * was unknown when this packet was grabbed as part of the + * bundle. + */ + packet->info.rx.exp_hdr = lk_ahd; + packet->act_len = payload_len + HTC_HDR_LENGTH; + + /* validate the actual header that was refreshed */ + if (packet->act_len > packet->buf_len) { + ath6kl_err("refreshed hdr payload len (%d) in bundled recv is invalid (hdr: 0x%X)\n", + payload_len, lk_ahd); + /* + * Limit this to max buffer just to print out some + * of the buffer. + */ + packet->act_len = min(packet->act_len, packet->buf_len); + status = -ENOMEM; + goto fail_rx; + } + + if (packet->endpoint != htc_hdr->eid) { + ath6kl_err("refreshed hdr ep (%d) does not match expected ep (%d)\n", + htc_hdr->eid, packet->endpoint); + status = -ENOMEM; + goto fail_rx; + } + } + + if (lk_ahd != packet->info.rx.exp_hdr) { + ath6kl_err("htc_proc_rxhdr, lk_ahd mismatch! (pPkt:0x%p flags:0x%X)\n", + packet, packet->info.rx.rx_flags); + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "Expected Message lk_ahd", + &packet->info.rx.exp_hdr, 4); + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "Current Frame Header", + (u8 *)&lk_ahd, sizeof(lk_ahd)); + status = -ENOMEM; + goto fail_rx; + } + + if (htc_hdr->flags & HTC_FLG_RX_TRAILER) { + if (htc_hdr->ctrl[0] < sizeof(struct htc_record_hdr) || + htc_hdr->ctrl[0] > payload_len) { + ath6kl_err("htc_proc_rxhdr, invalid hdr (payload len should be :%d, CB[0] is:%d)\n", + payload_len, htc_hdr->ctrl[0]); + status = -ENOMEM; + goto fail_rx; + } + + if (packet->info.rx.rx_flags & HTC_RX_PKT_IGNORE_LOOKAHEAD) { + next_lkahds = NULL; + n_lkahds = NULL; + } + + status = htc_proc_trailer(target, packet->buf + HTC_HDR_LENGTH + + payload_len - htc_hdr->ctrl[0], + htc_hdr->ctrl[0], next_lkahds, + n_lkahds, packet->endpoint); + + if (status) + goto fail_rx; + + packet->act_len -= htc_hdr->ctrl[0]; + } + + packet->buf += HTC_HDR_LENGTH; + packet->act_len -= HTC_HDR_LENGTH; + +fail_rx: + if (status) + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "BAD HTC Recv PKT", + packet->buf, + packet->act_len < 256 ? packet->act_len : 256); + else { + if (packet->act_len > 0) + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, + "HTC - Application Msg", + packet->buf, packet->act_len); + } + + return status; +} + +static void do_rx_completion(struct htc_endpoint *endpoint, + struct htc_packet *packet) +{ + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "htc calling ep %d recv callback on packet 0x%p\n", + endpoint->eid, packet); + endpoint->ep_cb.rx(endpoint->target, packet); +} + +static int htc_issue_rxpkt_bundle(struct htc_target *target, + struct list_head *rxq, + struct list_head *sync_compq, + int *n_pkt_fetched, bool part_bundle) +{ + struct hif_scatter_req *scat_req; + struct htc_packet *packet; + int rem_space = target->dev->max_rx_bndl_sz; + int n_scat_pkt, status = 0, i, len; + + n_scat_pkt = get_queue_depth(rxq); + n_scat_pkt = min(n_scat_pkt, target->msg_per_bndl_max); + + if ((get_queue_depth(rxq) - n_scat_pkt) > 0) { + /* + * We were forced to split this bundle receive operation + * all packets in this partial bundle must have their + * lookaheads ignored. + */ + part_bundle = true; + + /* + * This would only happen if the target ignored our max + * bundle limit. + */ + ath6kl_warn("htc_issue_rxpkt_bundle : partial bundle detected num:%d , %d\n", + get_queue_depth(rxq), n_scat_pkt); + } + + len = 0; + + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "htc_issue_rxpkt_bundle (numpackets: %d , actual : %d)\n", + get_queue_depth(rxq), n_scat_pkt); + + scat_req = hif_scatter_req_get(target->dev->ar); + + if (scat_req == NULL) + goto fail_rx_pkt; + + scat_req->flags = 0; + + if (part_bundle) + scat_req->flags |= + HTC_SCAT_REQ_FLG_PART_BNDL; + + for (i = 0; i < n_scat_pkt; i++) { + int pad_len; + + packet = list_first_entry(rxq, struct htc_packet, list); + list_del(&packet->list); + + pad_len = CALC_TXRX_PADDED_LEN(target->dev, + packet->act_len); + + if ((rem_space - pad_len) < 0) { + list_add(&packet->list, rxq); + break; + } + + rem_space -= pad_len; + + if (part_bundle || (i < (n_scat_pkt - 1))) + /* + * Packet 0..n-1 cannot be checked for look-aheads + * since we are fetching a bundle the last packet + * however can have it's lookahead used + */ + packet->info.rx.rx_flags |= + HTC_RX_PKT_IGNORE_LOOKAHEAD; + + /* NOTE: 1 HTC packet per scatter entry */ + scat_req->scat_list[i].buf = packet->buf; + scat_req->scat_list[i].len = pad_len; + + packet->info.rx.rx_flags |= HTC_RX_PKT_PART_OF_BUNDLE; + + list_add_tail(&packet->list, sync_compq); + + WARN_ON(!scat_req->scat_list[i].len); + len += scat_req->scat_list[i].len; + } + + scat_req->len = len; + scat_req->scat_entries = i; + + status = ath6kldev_submit_scat_req(target->dev, scat_req, true); + + if (!status) + *n_pkt_fetched = i; + + /* free scatter request */ + hif_scatter_req_add(target->dev->ar, scat_req); + +fail_rx_pkt: + + return status; +} + +static int htc_proc_fetched_rxpkts(struct htc_target *target, + struct list_head *comp_pktq, u32 lk_ahds[], + int *n_lk_ahd) +{ + struct htc_packet *packet, *tmp_pkt; + struct htc_endpoint *ep; + int status = 0; + + list_for_each_entry_safe(packet, tmp_pkt, comp_pktq, list) { + list_del(&packet->list); + ep = &target->endpoint[packet->endpoint]; + + /* process header for each of the recv packet */ + status = htc_proc_rxhdr(target, packet, lk_ahds, n_lk_ahd); + if (status) + return status; + + if (list_empty(comp_pktq)) { + /* + * Last packet's more packet flag is set + * based on the lookahead. + */ + if (*n_lk_ahd > 0) + set_rxpkt_indication_flag(lk_ahds[0], + ep, packet); + } else + /* + * Packets in a bundle automatically have + * this flag set. + */ + packet->info.rx.indicat_flags |= + HTC_RX_FLAGS_INDICATE_MORE_PKTS; + + htc_update_rx_stats(ep, *n_lk_ahd); + + if (packet->info.rx.rx_flags & HTC_RX_PKT_PART_OF_BUNDLE) + ep->ep_st.rx_bundl += 1; + + do_rx_completion(ep, packet); + } + + return status; +} + +static int htc_fetch_rxpkts(struct htc_target *target, + struct list_head *rx_pktq, + struct list_head *comp_pktq) +{ + int fetched_pkts; + bool part_bundle = false; + int status = 0; + + /* now go fetch the list of HTC packets */ + while (!list_empty(rx_pktq)) { + fetched_pkts = 0; + + if (target->rx_bndl_enable && (get_queue_depth(rx_pktq) > 1)) { + /* + * There are enough packets to attempt a + * bundle transfer and recv bundling is + * allowed. + */ + status = htc_issue_rxpkt_bundle(target, rx_pktq, + comp_pktq, + &fetched_pkts, + part_bundle); + if (status) + return status; + + if (!list_empty(rx_pktq)) + part_bundle = true; + } + + if (!fetched_pkts) { + struct htc_packet *packet; + + packet = list_first_entry(rx_pktq, struct htc_packet, + list); + + list_del(&packet->list); + + /* fully synchronous */ + packet->completion = NULL; + + if (!list_empty(rx_pktq)) + /* + * look_aheads in all packet + * except the last one in the + * bundle must be ignored + */ + packet->info.rx.rx_flags |= + HTC_RX_PKT_IGNORE_LOOKAHEAD; + + /* go fetch the packet */ + status = dev_rx_pkt(target, packet, packet->act_len); + if (status) + return status; + + list_add_tail(&packet->list, comp_pktq); + } + } + + return status; +} + +static int htc_rxmsg_pending_handler(struct htc_target *target, + u32 msg_look_ahead[], + int *num_pkts) +{ + struct htc_packet *packets, *tmp_pkt; + struct htc_endpoint *endpoint; + struct list_head rx_pktq, comp_pktq; + int status = 0; + u32 look_aheads[HTC_HOST_MAX_MSG_PER_BUNDLE]; + int num_look_ahead = 1; + enum htc_endpoint_id id; + int n_fetched = 0; + + *num_pkts = 0; + + /* + * On first entry copy the look_aheads into our temp array for + * processing + */ + memcpy(look_aheads, msg_look_ahead, sizeof(look_aheads)); + + while (true) { + + /* + * First lookahead sets the expected endpoint IDs for all + * packets in a bundle. + */ + id = ((struct htc_frame_hdr *)&look_aheads[0])->eid; + endpoint = &target->endpoint[id]; + + if (id >= ENDPOINT_MAX) { + ath6kl_err("MsgPend, invalid endpoint in look-ahead: %d\n", + id); + status = -ENOMEM; + break; + } + + INIT_LIST_HEAD(&rx_pktq); + INIT_LIST_HEAD(&comp_pktq); + + /* + * Try to allocate as many HTC RX packets indicated by the + * look_aheads. + */ + status = alloc_and_prep_rxpkts(target, look_aheads, + num_look_ahead, endpoint, + &rx_pktq); + if (status) + break; + + if (get_queue_depth(&rx_pktq) >= 2) + /* + * A recv bundle was detected, force IRQ status + * re-check again + */ + target->dev->chk_irq_status_cnt = 1; + + n_fetched += get_queue_depth(&rx_pktq); + + num_look_ahead = 0; + + status = htc_fetch_rxpkts(target, &rx_pktq, &comp_pktq); + + if (!status) + chk_rx_water_mark(endpoint); + + /* Process fetched packets */ + status = htc_proc_fetched_rxpkts(target, &comp_pktq, + look_aheads, &num_look_ahead); + + if (!num_look_ahead || status) + break; + + /* + * For SYNCH processing, if we get here, we are running + * through the loop again due to a detected lookahead. Set + * flag that we should re-check IRQ status registers again + * before leaving IRQ processing, this can net better + * performance in high throughput situations. + */ + target->dev->chk_irq_status_cnt = 1; + } + + if (status) { + ath6kl_err("failed to get pending recv messages: %d\n", + status); + /* + * Cleanup any packets we allocated but didn't use to + * actually fetch any packets. + */ + list_for_each_entry_safe(packets, tmp_pkt, &rx_pktq, list) { + list_del(&packets->list); + htc_reclaim_rxbuf(target, packets, + &target->endpoint[packets->endpoint]); + } + + /* cleanup any packets in sync completion queue */ + list_for_each_entry_safe(packets, tmp_pkt, &comp_pktq, list) { + list_del(&packets->list); + htc_reclaim_rxbuf(target, packets, + &target->endpoint[packets->endpoint]); + } + + if (target->htc_flags & HTC_OP_STATE_STOPPING) { + ath6kl_warn("host is going to stop blocking receiver for htc_stop\n"); + ath6kldev_rx_control(target->dev, false); + } + } + + /* + * Before leaving, check to see if host ran out of buffers and + * needs to stop the receiver. + */ + if (target->rx_st_flags & HTC_RECV_WAIT_BUFFERS) { + ath6kl_warn("host has no rx buffers blocking receiver to prevent overrun\n"); + ath6kldev_rx_control(target->dev, false); + } + *num_pkts = n_fetched; + + return status; +} + +/* + * Synchronously wait for a control message from the target, + * This function is used at initialization time ONLY. At init messages + * on ENDPOINT 0 are expected. + */ +static struct htc_packet *htc_wait_for_ctrl_msg(struct htc_target *target) +{ + struct htc_packet *packet = NULL; + struct htc_frame_hdr *htc_hdr; + u32 look_ahead; + + if (ath6kldev_poll_mboxmsg_rx(target->dev, &look_ahead, + HTC_TARGET_RESPONSE_TIMEOUT)) + return NULL; + + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "htc_wait_for_ctrl_msg: look_ahead : 0x%X\n", look_ahead); + + htc_hdr = (struct htc_frame_hdr *)&look_ahead; + + if (htc_hdr->eid != ENDPOINT_0) + return NULL; + + packet = htc_get_control_buf(target, false); + + if (!packet) + return NULL; + + packet->info.rx.rx_flags = 0; + packet->info.rx.exp_hdr = look_ahead; + packet->act_len = le16_to_cpu(htc_hdr->payld_len) + HTC_HDR_LENGTH; + + if (packet->act_len > packet->buf_len) + goto fail_ctrl_rx; + + /* we want synchronous operation */ + packet->completion = NULL; + + /* get the message from the device, this will block */ + if (dev_rx_pkt(target, packet, packet->act_len)) + goto fail_ctrl_rx; + + /* process receive header */ + packet->status = htc_proc_rxhdr(target, packet, NULL, NULL); + + if (packet->status) { + ath6kl_err("htc_wait_for_ctrl_msg, htc_proc_rxhdr failed (status = %d)\n", + packet->status); + goto fail_ctrl_rx; + } + + return packet; + +fail_ctrl_rx: + if (packet != NULL) { + htc_rxpkt_reset(packet); + reclaim_rx_ctrl_buf(target, packet); + } + + return NULL; +} + +int htc_add_rxbuf_multiple(struct htc_target *target, + struct list_head *pkt_queue) +{ + struct htc_endpoint *endpoint; + struct htc_packet *first_pkt; + bool rx_unblock = false; + int status = 0, depth; + + if (list_empty(pkt_queue)) + return -ENOMEM; + + first_pkt = list_first_entry(pkt_queue, struct htc_packet, list); + + if (first_pkt->endpoint >= ENDPOINT_MAX) + return status; + + depth = get_queue_depth(pkt_queue); + + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "htc_add_rxbuf_multiple: ep id: %d, cnt:%d, len: %d\n", + first_pkt->endpoint, depth, first_pkt->buf_len); + + endpoint = &target->endpoint[first_pkt->endpoint]; + + if (target->htc_flags & HTC_OP_STATE_STOPPING) { + struct htc_packet *packet, *tmp_pkt; + + /* walk through queue and mark each one canceled */ + list_for_each_entry_safe(packet, tmp_pkt, pkt_queue, list) { + packet->status = -ECANCELED; + list_del(&packet->list); + do_rx_completion(endpoint, packet); + } + + return status; + } + + spin_lock_bh(&target->rx_lock); + + list_splice_tail_init(pkt_queue, &endpoint->rx_bufq); + + /* check if we are blocked waiting for a new buffer */ + if (target->rx_st_flags & HTC_RECV_WAIT_BUFFERS) { + if (target->ep_waiting == first_pkt->endpoint) { + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "receiver was blocked on ep:%d, unblocking.\n", + target->ep_waiting); + target->rx_st_flags &= ~HTC_RECV_WAIT_BUFFERS; + target->ep_waiting = ENDPOINT_MAX; + rx_unblock = true; + } + } + + spin_unlock_bh(&target->rx_lock); + + if (rx_unblock && !(target->htc_flags & HTC_OP_STATE_STOPPING)) + /* TODO : implement a buffer threshold count? */ + ath6kldev_rx_control(target->dev, true); + + return status; +} + +void htc_flush_rx_buf(struct htc_target *target) +{ + struct htc_endpoint *endpoint; + struct htc_packet *packet, *tmp_pkt; + int i; + + for (i = ENDPOINT_0; i < ENDPOINT_MAX; i++) { + endpoint = &target->endpoint[i]; + if (!endpoint->svc_id) + /* not in use.. */ + continue; + + spin_lock_bh(&target->rx_lock); + list_for_each_entry_safe(packet, tmp_pkt, + &endpoint->rx_bufq, list) { + list_del(&packet->list); + spin_unlock_bh(&target->rx_lock); + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "flushing rx pkt:0x%p, len:%d, ep:%d\n", + packet, packet->buf_len, + packet->endpoint); + dev_kfree_skb(packet->pkt_cntxt); + spin_lock_bh(&target->rx_lock); + } + spin_unlock_bh(&target->rx_lock); + } +} + +int htc_conn_service(struct htc_target *target, + struct htc_service_connect_req *conn_req, + struct htc_service_connect_resp *conn_resp) +{ + struct htc_packet *rx_pkt = NULL; + struct htc_packet *tx_pkt = NULL; + struct htc_conn_service_resp *resp_msg; + struct htc_conn_service_msg *conn_msg; + struct htc_endpoint *endpoint; + enum htc_endpoint_id assigned_ep = ENDPOINT_MAX; + unsigned int max_msg_sz = 0; + int status = 0; + + ath6kl_dbg(ATH6KL_DBG_TRC, + "htc_conn_service, target:0x%p service id:0x%X\n", + target, conn_req->svc_id); + + if (conn_req->svc_id == HTC_CTRL_RSVD_SVC) { + /* special case for pseudo control service */ + assigned_ep = ENDPOINT_0; + max_msg_sz = HTC_MAX_CTRL_MSG_LEN; + } else { + /* allocate a packet to send to the target */ + tx_pkt = htc_get_control_buf(target, true); + + if (!tx_pkt) + return -ENOMEM; + + conn_msg = (struct htc_conn_service_msg *)tx_pkt->buf; + memset(conn_msg, 0, sizeof(*conn_msg)); + conn_msg->msg_id = cpu_to_le16(HTC_MSG_CONN_SVC_ID); + conn_msg->svc_id = cpu_to_le16(conn_req->svc_id); + conn_msg->conn_flags = cpu_to_le16(conn_req->conn_flags); + + set_htc_pkt_info(tx_pkt, NULL, (u8 *) conn_msg, + sizeof(*conn_msg) + conn_msg->svc_meta_len, + ENDPOINT_0, HTC_SERVICE_TX_PACKET_TAG); + + /* we want synchronous operation */ + tx_pkt->completion = NULL; + htc_prep_send_pkt(tx_pkt, 0, 0, 0); + status = htc_issue_send(target, tx_pkt); + + if (status) + goto fail_tx; + + /* wait for response */ + rx_pkt = htc_wait_for_ctrl_msg(target); + + if (!rx_pkt) { + status = -ENOMEM; + goto fail_tx; + } + + resp_msg = (struct htc_conn_service_resp *)rx_pkt->buf; + + if ((le16_to_cpu(resp_msg->msg_id) != HTC_MSG_CONN_SVC_RESP_ID) + || (rx_pkt->act_len < sizeof(*resp_msg))) { + status = -ENOMEM; + goto fail_tx; + } + + conn_resp->resp_code = resp_msg->status; + /* check response status */ + if (resp_msg->status != HTC_SERVICE_SUCCESS) { + ath6kl_err("target failed service 0x%X connect request (status:%d)\n", + resp_msg->svc_id, resp_msg->status); + status = -ENOMEM; + goto fail_tx; + } + + assigned_ep = (enum htc_endpoint_id)resp_msg->eid; + max_msg_sz = le16_to_cpu(resp_msg->max_msg_sz); + } + + if (assigned_ep >= ENDPOINT_MAX || !max_msg_sz) { + status = -ENOMEM; + goto fail_tx; + } + + endpoint = &target->endpoint[assigned_ep]; + endpoint->eid = assigned_ep; + if (endpoint->svc_id) { + status = -ENOMEM; + goto fail_tx; + } + + /* return assigned endpoint to caller */ + conn_resp->endpoint = assigned_ep; + conn_resp->len_max = max_msg_sz; + + /* setup the endpoint */ + + /* this marks the endpoint in use */ + endpoint->svc_id = conn_req->svc_id; + + endpoint->max_txq_depth = conn_req->max_txq_depth; + endpoint->len_max = max_msg_sz; + endpoint->ep_cb = conn_req->ep_cb; + endpoint->cred_dist.svc_id = conn_req->svc_id; + endpoint->cred_dist.htc_rsvd = endpoint; + endpoint->cred_dist.endpoint = assigned_ep; + endpoint->cred_dist.cred_sz = target->tgt_cred_sz; + + if (conn_req->max_rxmsg_sz) { + /* + * Override cred_per_msg calculation, this optimizes + * the credit-low indications since the host will actually + * issue smaller messages in the Send path. + */ + if (conn_req->max_rxmsg_sz > max_msg_sz) { + status = -ENOMEM; + goto fail_tx; + } + endpoint->cred_dist.cred_per_msg = + conn_req->max_rxmsg_sz / target->tgt_cred_sz; + } else + endpoint->cred_dist.cred_per_msg = + max_msg_sz / target->tgt_cred_sz; + + if (!endpoint->cred_dist.cred_per_msg) + endpoint->cred_dist.cred_per_msg = 1; + + /* save local connection flags */ + endpoint->conn_flags = conn_req->flags; + +fail_tx: + if (tx_pkt) + htc_reclaim_txctrl_buf(target, tx_pkt); + + if (rx_pkt) { + htc_rxpkt_reset(rx_pkt); + reclaim_rx_ctrl_buf(target, rx_pkt); + } + + return status; +} + +static void reset_ep_state(struct htc_target *target) +{ + struct htc_endpoint *endpoint; + int i; + + for (i = ENDPOINT_0; i < ENDPOINT_MAX; i++) { + endpoint = &target->endpoint[i]; + memset(&endpoint->cred_dist, 0, sizeof(endpoint->cred_dist)); + endpoint->svc_id = 0; + endpoint->len_max = 0; + endpoint->max_txq_depth = 0; + memset(&endpoint->ep_st, 0, + sizeof(endpoint->ep_st)); + INIT_LIST_HEAD(&endpoint->rx_bufq); + INIT_LIST_HEAD(&endpoint->txq); + endpoint->target = target; + } + + /* reset distribution list */ + INIT_LIST_HEAD(&target->cred_dist_list); +} + +int htc_get_rxbuf_num(struct htc_target *target, enum htc_endpoint_id endpoint) +{ + int num; + + spin_lock_bh(&target->rx_lock); + num = get_queue_depth(&(target->endpoint[endpoint].rx_bufq)); + spin_unlock_bh(&target->rx_lock); + return num; +} + +static void htc_setup_msg_bndl(struct htc_target *target) +{ + struct hif_dev_scat_sup_info *scat_info = &target->dev->hif_scat_info; + + /* limit what HTC can handle */ + target->msg_per_bndl_max = min(HTC_HOST_MAX_MSG_PER_BUNDLE, + target->msg_per_bndl_max); + + if (ath6kldev_setup_msg_bndl(target->dev, target->msg_per_bndl_max)) { + target->msg_per_bndl_max = 0; + return; + } + + /* limit bundle what the device layer can handle */ + target->msg_per_bndl_max = min(scat_info->max_scat_entries, + target->msg_per_bndl_max); + + ath6kl_dbg(ATH6KL_DBG_TRC, + "htc bundling allowed. max msg per htc bundle: %d\n", + target->msg_per_bndl_max); + + /* Max rx bundle size is limited by the max tx bundle size */ + target->dev->max_rx_bndl_sz = scat_info->max_xfer_szper_scatreq; + /* Max tx bundle size if limited by the extended mbox address range */ + target->dev->max_tx_bndl_sz = min(HIF_MBOX0_EXT_WIDTH, + scat_info->max_xfer_szper_scatreq); + + ath6kl_dbg(ATH6KL_DBG_ANY, "max recv: %d max send: %d\n", + target->dev->max_rx_bndl_sz, target->dev->max_tx_bndl_sz); + + if (target->dev->max_tx_bndl_sz) + target->tx_bndl_enable = true; + + if (target->dev->max_rx_bndl_sz) + target->rx_bndl_enable = true; + + if ((target->tgt_cred_sz % target->dev->block_sz) != 0) { + ath6kl_warn("credit size: %d is not block aligned! Disabling send bundling\n", + target->tgt_cred_sz); + + /* + * Disallow send bundling since the credit size is + * not aligned to a block size the I/O block + * padding will spill into the next credit buffer + * which is fatal. + */ + target->tx_bndl_enable = false; + } +} + +int htc_wait_target(struct htc_target *target) +{ + struct htc_packet *packet = NULL; + struct htc_ready_ext_msg *rdy_msg; + struct htc_service_connect_req connect; + struct htc_service_connect_resp resp; + int status; + + /* we should be getting 1 control message that the target is ready */ + packet = htc_wait_for_ctrl_msg(target); + + if (!packet) + return -ENOMEM; + + /* we controlled the buffer creation so it's properly aligned */ + rdy_msg = (struct htc_ready_ext_msg *)packet->buf; + + if ((le16_to_cpu(rdy_msg->ver2_0_info.msg_id) != HTC_MSG_READY_ID) || + (packet->act_len < sizeof(struct htc_ready_msg))) { + status = -ENOMEM; + goto fail_wait_target; + } + + if (!rdy_msg->ver2_0_info.cred_cnt || !rdy_msg->ver2_0_info.cred_sz) { + status = -ENOMEM; + goto fail_wait_target; + } + + target->tgt_creds = le16_to_cpu(rdy_msg->ver2_0_info.cred_cnt); + target->tgt_cred_sz = le16_to_cpu(rdy_msg->ver2_0_info.cred_sz); + + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "target ready: credits: %d credit size: %d\n", + target->tgt_creds, target->tgt_cred_sz); + + /* check if this is an extended ready message */ + if (packet->act_len >= sizeof(struct htc_ready_ext_msg)) { + /* this is an extended message */ + target->htc_tgt_ver = rdy_msg->htc_ver; + target->msg_per_bndl_max = rdy_msg->msg_per_htc_bndl; + } else { + /* legacy */ + target->htc_tgt_ver = HTC_VERSION_2P0; + target->msg_per_bndl_max = 0; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "using htc protocol version : %s (%d)\n", + (target->htc_tgt_ver == HTC_VERSION_2P0) ? "2.0" : ">= 2.1", + target->htc_tgt_ver); + + if (target->msg_per_bndl_max > 0) + htc_setup_msg_bndl(target); + + /* setup our pseudo HTC control endpoint connection */ + memset(&connect, 0, sizeof(connect)); + memset(&resp, 0, sizeof(resp)); + connect.ep_cb.rx = htc_ctrl_rx; + connect.ep_cb.rx_refill = NULL; + connect.ep_cb.tx_full = NULL; + connect.max_txq_depth = NUM_CONTROL_BUFFERS; + connect.svc_id = HTC_CTRL_RSVD_SVC; + + /* connect fake service */ + status = htc_conn_service((void *)target, &connect, &resp); + + if (status) + ath6kl_hif_cleanup_scatter(target->dev->ar); + +fail_wait_target: + if (packet) { + htc_rxpkt_reset(packet); + reclaim_rx_ctrl_buf(target, packet); + } + + return status; +} + +/* + * Start HTC, enable interrupts and let the target know + * host has finished setup. + */ +int htc_start(struct htc_target *target) +{ + struct htc_packet *packet; + int status; + + /* Disable interrupts at the chip level */ + ath6kldev_disable_intrs(target->dev); + + target->htc_flags = 0; + target->rx_st_flags = 0; + + /* Push control receive buffers into htc control endpoint */ + while ((packet = htc_get_control_buf(target, false)) != NULL) { + status = htc_add_rxbuf(target, packet); + if (status) + return status; + } + + /* NOTE: the first entry in the distribution list is ENDPOINT_0 */ + ath6k_credit_init(target->cred_dist_cntxt, &target->cred_dist_list, + target->tgt_creds); + + dump_cred_dist_stats(target); + + /* Indicate to the target of the setup completion */ + status = htc_setup_tx_complete(target); + + if (status) + return status; + + /* unmask interrupts */ + status = ath6kldev_unmask_intrs(target->dev); + + if (status) + htc_stop(target); + + return status; +} + +/* htc_stop: stop interrupt reception, and flush all queued buffers */ +void htc_stop(struct htc_target *target) +{ + spin_lock_bh(&target->htc_lock); + target->htc_flags |= HTC_OP_STATE_STOPPING; + spin_unlock_bh(&target->htc_lock); + + /* + * Masking interrupts is a synchronous operation, when this + * function returns all pending HIF I/O has completed, we can + * safely flush the queues. + */ + ath6kldev_mask_intrs(target->dev); + + htc_flush_txep_all(target); + + htc_flush_rx_buf(target); + + reset_ep_state(target); +} + +void *htc_create(struct ath6kl *ar) +{ + struct htc_target *target = NULL; + struct htc_packet *packet; + int status = 0, i = 0; + u32 block_size, ctrl_bufsz; + + target = kzalloc(sizeof(*target), GFP_KERNEL); + if (!target) { + ath6kl_err("unable to allocate memory\n"); + return NULL; + } + + target->dev = kzalloc(sizeof(*target->dev), GFP_KERNEL); + if (!target->dev) { + ath6kl_err("unable to allocate memory\n"); + status = -ENOMEM; + goto fail_create_htc; + } + + spin_lock_init(&target->htc_lock); + spin_lock_init(&target->rx_lock); + spin_lock_init(&target->tx_lock); + + INIT_LIST_HEAD(&target->free_ctrl_txbuf); + INIT_LIST_HEAD(&target->free_ctrl_rxbuf); + INIT_LIST_HEAD(&target->cred_dist_list); + + target->dev->ar = ar; + target->dev->htc_cnxt = target; + target->dev->msg_pending = htc_rxmsg_pending_handler; + target->ep_waiting = ENDPOINT_MAX; + + reset_ep_state(target); + + status = ath6kldev_setup(target->dev); + + if (status) + goto fail_create_htc; + + block_size = ar->mbox_info.block_size; + + ctrl_bufsz = (block_size > HTC_MAX_CTRL_MSG_LEN) ? + (block_size + HTC_HDR_LENGTH) : + (HTC_MAX_CTRL_MSG_LEN + HTC_HDR_LENGTH); + + for (i = 0; i < NUM_CONTROL_BUFFERS; i++) { + packet = kzalloc(sizeof(*packet), GFP_KERNEL); + if (!packet) + break; + + packet->buf_start = kzalloc(ctrl_bufsz, GFP_KERNEL); + if (!packet->buf_start) { + kfree(packet); + break; + } + + packet->buf_len = ctrl_bufsz; + if (i < NUM_CONTROL_RX_BUFFERS) { + packet->act_len = 0; + packet->buf = packet->buf_start; + packet->endpoint = ENDPOINT_0; + list_add_tail(&packet->list, &target->free_ctrl_rxbuf); + } else + list_add_tail(&packet->list, &target->free_ctrl_txbuf); + } + +fail_create_htc: + if (i != NUM_CONTROL_BUFFERS || status) { + if (target) { + htc_cleanup(target); + target = NULL; + } + } + + return target; +} + +/* cleanup the HTC instance */ +void htc_cleanup(struct htc_target *target) +{ + struct htc_packet *packet, *tmp_packet; + + ath6kl_hif_cleanup_scatter(target->dev->ar); + + list_for_each_entry_safe(packet, tmp_packet, + &target->free_ctrl_txbuf, list) { + list_del(&packet->list); + kfree(packet->buf_start); + kfree(packet); + } + + list_for_each_entry_safe(packet, tmp_packet, + &target->free_ctrl_rxbuf, list) { + list_del(&packet->list); + kfree(packet->buf_start); + kfree(packet); + } + + kfree(target->dev); + kfree(target); +} diff --git a/drivers/net/wireless/ath/ath6kl/htc.h b/drivers/net/wireless/ath/ath6kl/htc.h new file mode 100644 index 000000000000..16fa7a84a231 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/htc.h @@ -0,0 +1,596 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef HTC_H +#define HTC_H + +#include "common.h" + +/* frame header flags */ + +/* send direction */ +#define HTC_FLAGS_NEED_CREDIT_UPDATE (1 << 0) +#define HTC_FLAGS_SEND_BUNDLE (1 << 1) + +/* receive direction */ +#define HTC_FLG_RX_UNUSED (1 << 0) +#define HTC_FLG_RX_TRAILER (1 << 1) +/* Bundle count maske and shift */ +#define HTC_FLG_RX_BNDL_CNT (0xF0) +#define HTC_FLG_RX_BNDL_CNT_S 4 + +#define HTC_HDR_LENGTH (sizeof(struct htc_frame_hdr)) +#define HTC_MAX_PAYLOAD_LENGTH (4096 - sizeof(struct htc_frame_hdr)) + +/* HTC control message IDs */ + +#define HTC_MSG_READY_ID 1 +#define HTC_MSG_CONN_SVC_ID 2 +#define HTC_MSG_CONN_SVC_RESP_ID 3 +#define HTC_MSG_SETUP_COMPLETE_ID 4 +#define HTC_MSG_SETUP_COMPLETE_EX_ID 5 + +#define HTC_MAX_CTRL_MSG_LEN 256 + +#define HTC_VERSION_2P0 0x00 +#define HTC_VERSION_2P1 0x01 + +#define HTC_SERVICE_META_DATA_MAX_LENGTH 128 + +#define HTC_CONN_FLGS_THRESH_LVL_QUAT 0x0 +#define HTC_CONN_FLGS_THRESH_LVL_HALF 0x1 +#define HTC_CONN_FLGS_THRESH_LVL_THREE_QUAT 0x2 +#define HTC_CONN_FLGS_REDUCE_CRED_DRIB 0x4 +#define HTC_CONN_FLGS_THRESH_MASK 0x3 + +/* connect response status codes */ +#define HTC_SERVICE_SUCCESS 0 +#define HTC_SERVICE_NOT_FOUND 1 +#define HTC_SERVICE_FAILED 2 + +/* no resources (i.e. no more endpoints) */ +#define HTC_SERVICE_NO_RESOURCES 3 + +/* specific service is not allowing any more endpoints */ +#define HTC_SERVICE_NO_MORE_EP 4 + +/* report record IDs */ +#define HTC_RECORD_NULL 0 +#define HTC_RECORD_CREDITS 1 +#define HTC_RECORD_LOOKAHEAD 2 +#define HTC_RECORD_LOOKAHEAD_BUNDLE 3 + +#define HTC_SETUP_COMP_FLG_RX_BNDL_EN (1 << 0) + +#define MAKE_SERVICE_ID(group, index) \ + (int)(((int)group << 8) | (int)(index)) + +/* NOTE: service ID of 0x0000 is reserved and should never be used */ +#define HTC_CTRL_RSVD_SVC MAKE_SERVICE_ID(RSVD_SERVICE_GROUP, 1) +#define WMI_CONTROL_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 0) +#define WMI_DATA_BE_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 1) +#define WMI_DATA_BK_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 2) +#define WMI_DATA_VI_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 3) +#define WMI_DATA_VO_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 4) +#define WMI_MAX_SERVICES 5 + +/* reserved and used to flush ALL packets */ +#define HTC_TX_PACKET_TAG_ALL 0 +#define HTC_SERVICE_TX_PACKET_TAG 1 +#define HTC_TX_PACKET_TAG_USER_DEFINED (HTC_SERVICE_TX_PACKET_TAG + 9) + +/* more packets on this endpoint are being fetched */ +#define HTC_RX_FLAGS_INDICATE_MORE_PKTS (1 << 0) + +/* TODO.. for BMI */ +#define ENDPOINT1 0 +/* TODO -remove me, but we have to fix BMI first */ +#define HTC_MAILBOX_NUM_MAX 4 + +/* enable send bundle padding for this endpoint */ +#define HTC_FLGS_TX_BNDL_PAD_EN (1 << 0) +#define HTC_EP_ACTIVE ((u32) (1u << 31)) + +/* HTC operational parameters */ +#define HTC_TARGET_RESPONSE_TIMEOUT 2000 /* in ms */ +#define HTC_TARGET_DEBUG_INTR_MASK 0x01 +#define HTC_TARGET_CREDIT_INTR_MASK 0xF0 + +#define HTC_HOST_MAX_MSG_PER_BUNDLE 8 +#define HTC_MIN_HTC_MSGS_TO_BUNDLE 2 + +/* packet flags */ + +#define HTC_RX_PKT_IGNORE_LOOKAHEAD (1 << 0) +#define HTC_RX_PKT_REFRESH_HDR (1 << 1) +#define HTC_RX_PKT_PART_OF_BUNDLE (1 << 2) +#define HTC_RX_PKT_NO_RECYCLE (1 << 3) + +/* scatter request flags */ + +#define HTC_SCAT_REQ_FLG_PART_BNDL (1 << 0) + +#define NUM_CONTROL_BUFFERS 8 +#define NUM_CONTROL_TX_BUFFERS 2 +#define NUM_CONTROL_RX_BUFFERS (NUM_CONTROL_BUFFERS - NUM_CONTROL_TX_BUFFERS) + +#define HTC_RECV_WAIT_BUFFERS (1 << 0) +#define HTC_OP_STATE_STOPPING (1 << 0) + +/* + * The frame header length and message formats defined herein were selected + * to accommodate optimal alignment for target processing. This reduces + * code size and improves performance. Any changes to the header length may + * alter the alignment and cause exceptions on the target. When adding to + * the messagestructures insure that fields are properly aligned. + */ + +/* HTC frame header + * + * NOTE: do not remove or re-arrange the fields, these are minimally + * required to take advantage of 4-byte lookaheads in some hardware + * implementations. + */ +struct htc_frame_hdr { + u8 eid; + u8 flags; + + /* length of data (including trailer) that follows the header */ + __le16 payld_len; + + /* end of 4-byte lookahead */ + + u8 ctrl[2]; +} __packed; + +/* HTC ready message */ +struct htc_ready_msg { + __le16 msg_id; + __le16 cred_cnt; + __le16 cred_sz; + u8 max_ep; + u8 pad; +} __packed; + +/* extended HTC ready message */ +struct htc_ready_ext_msg { + struct htc_ready_msg ver2_0_info; + u8 htc_ver; + u8 msg_per_htc_bndl; +} __packed; + +/* connect service */ +struct htc_conn_service_msg { + __le16 msg_id; + __le16 svc_id; + __le16 conn_flags; + u8 svc_meta_len; + u8 pad; +} __packed; + +/* connect response */ +struct htc_conn_service_resp { + __le16 msg_id; + __le16 svc_id; + u8 status; + u8 eid; + __le16 max_msg_sz; + u8 svc_meta_len; + u8 pad; +} __packed; + +struct htc_setup_comp_msg { + __le16 msg_id; +} __packed; + +/* extended setup completion message */ +struct htc_setup_comp_ext_msg { + __le16 msg_id; + __le32 flags; + u8 msg_per_rxbndl; + u8 Rsvd[3]; +} __packed; + +struct htc_record_hdr { + u8 rec_id; + u8 len; +} __packed; + +struct htc_credit_report { + u8 eid; + u8 credits; +} __packed; + +/* + * NOTE: The lk_ahd array is guarded by a pre_valid + * and Post Valid guard bytes. The pre_valid bytes must + * equal the inverse of the post_valid byte. + */ +struct htc_lookahead_report { + u8 pre_valid; + u8 lk_ahd[4]; + u8 post_valid; +} __packed; + +struct htc_bundle_lkahd_rpt { + u8 lk_ahd[4]; +} __packed; + +/* Current service IDs */ + +enum htc_service_grp_ids { + RSVD_SERVICE_GROUP = 0, + WMI_SERVICE_GROUP = 1, + + HTC_TEST_GROUP = 254, + HTC_SERVICE_GROUP_LAST = 255 +}; + +/* ------ endpoint IDS ------ */ + +enum htc_endpoint_id { + ENDPOINT_UNUSED = -1, + ENDPOINT_0 = 0, + ENDPOINT_1 = 1, + ENDPOINT_2 = 2, + ENDPOINT_3, + ENDPOINT_4, + ENDPOINT_5, + ENDPOINT_6, + ENDPOINT_7, + ENDPOINT_8, + ENDPOINT_MAX, +}; + +struct htc_tx_packet_info { + u16 tag; + int cred_used; + u8 flags; + int seqno; +}; + +struct htc_rx_packet_info { + u32 exp_hdr; + u32 rx_flags; + u32 indicat_flags; +}; + +struct htc_target; + +/* wrapper around endpoint-specific packets */ +struct htc_packet { + struct list_head list; + + /* caller's per packet specific context */ + void *pkt_cntxt; + + /* + * the true buffer start , the caller can store the real + * buffer start here. In receive callbacks, the HTC layer + * sets buf to the start of the payload past the header. + * This field allows the caller to reset buf when it recycles + * receive packets back to HTC. + */ + u8 *buf_start; + + /* + * Pointer to the start of the buffer. In the transmit + * direction this points to the start of the payload. In the + * receive direction, however, the buffer when queued up + * points to the start of the HTC header but when returned + * to the caller points to the start of the payload + */ + u8 *buf; + u32 buf_len; + + /* actual length of payload */ + u32 act_len; + + /* endpoint that this packet was sent/recv'd from */ + enum htc_endpoint_id endpoint; + + /* completion status */ + + int status; + union { + struct htc_tx_packet_info tx; + struct htc_rx_packet_info rx; + } info; + + void (*completion) (struct htc_target *, struct htc_packet *); + struct htc_target *context; +}; + +enum htc_send_full_action { + HTC_SEND_FULL_KEEP = 0, + HTC_SEND_FULL_DROP = 1, +}; + +struct htc_ep_callbacks { + void (*rx) (struct htc_target *, struct htc_packet *); + void (*rx_refill) (struct htc_target *, enum htc_endpoint_id endpoint); + enum htc_send_full_action (*tx_full) (struct htc_target *, + struct htc_packet *); + struct htc_packet *(*rx_allocthresh) (struct htc_target *, + enum htc_endpoint_id, int); + int rx_alloc_thresh; + int rx_refill_thresh; +}; + +/* service connection information */ +struct htc_service_connect_req { + u16 svc_id; + u16 conn_flags; + struct htc_ep_callbacks ep_cb; + int max_txq_depth; + u32 flags; + unsigned int max_rxmsg_sz; +}; + +/* service connection response information */ +struct htc_service_connect_resp { + u8 buf_len; + u8 act_len; + enum htc_endpoint_id endpoint; + unsigned int len_max; + u8 resp_code; +}; + +/* endpoint distributionstructure */ +struct htc_endpoint_credit_dist { + struct list_head list; + + /* Service ID (set by HTC) */ + u16 svc_id; + + /* endpoint for this distributionstruct (set by HTC) */ + enum htc_endpoint_id endpoint; + + u32 dist_flags; + + /* + * credits for normal operation, anything above this + * indicates the endpoint is over-subscribed. + */ + int cred_norm; + + /* floor for credit distribution */ + int cred_min; + + int cred_assngd; + + /* current credits available */ + int credits; + + /* + * pending credits to distribute on this endpoint, this + * is set by HTC when credit reports arrive. The credit + * distribution functions sets this to zero when it distributes + * the credits. + */ + int cred_to_dist; + + /* + * the number of credits that the current pending TX packet needs + * to transmit. This is set by HTC when endpoint needs credits in + * order to transmit. + */ + int seek_cred; + + /* size in bytes of each credit */ + int cred_sz; + + /* credits required for a maximum sized messages */ + int cred_per_msg; + + /* reserved for HTC use */ + void *htc_rsvd; + + /* + * current depth of TX queue , i.e. messages waiting for credits + * This field is valid only when HTC_CREDIT_DIST_ACTIVITY_CHANGE + * or HTC_CREDIT_DIST_SEND_COMPLETE is indicated on an endpoint + * that has non-zero credits to recover. + */ + int txq_depth; +}; + +/* + * credit distibution code that is passed into the distrbution function, + * there are mandatory and optional codes that must be handled + */ +enum htc_credit_dist_reason { + HTC_CREDIT_DIST_SEND_COMPLETE = 0, + HTC_CREDIT_DIST_ACTIVITY_CHANGE = 1, + HTC_CREDIT_DIST_SEEK_CREDITS, +}; + +struct htc_credit_state_info { + int total_avail_credits; + int cur_free_credits; + struct list_head lowestpri_ep_dist; +}; + +/* endpoint statistics */ +struct htc_endpoint_stats { + /* + * number of times the host set the credit-low flag in a send + * message on this endpoint + */ + u32 cred_low_indicate; + + u32 tx_issued; + u32 tx_pkt_bundled; + u32 tx_bundles; + u32 tx_dropped; + + /* running count of total credit reports received for this endpoint */ + u32 tx_cred_rpt; + + /* credit reports received from this endpoint's RX packets */ + u32 cred_rpt_from_rx; + + /* credit reports received from RX packets of other endpoints */ + u32 cred_rpt_from_other; + + /* credit reports received from endpoint 0 RX packets */ + u32 cred_rpt_ep0; + + /* count of credits received via Rx packets on this endpoint */ + u32 cred_from_rx; + + /* count of credits received via another endpoint */ + u32 cred_from_other; + + /* count of credits received via another endpoint */ + u32 cred_from_ep0; + + /* count of consummed credits */ + u32 cred_cosumd; + + /* count of credits returned */ + u32 cred_retnd; + + u32 rx_pkts; + + /* count of lookahead records found in Rx msg */ + u32 rx_lkahds; + + /* count of recv packets received in a bundle */ + u32 rx_bundl; + + /* count of number of bundled lookaheads */ + u32 rx_bundle_lkahd; + + /* count of the number of bundle indications from the HTC header */ + u32 rx_bundle_from_hdr; + + /* the number of times the recv allocation threshold was hit */ + u32 rx_alloc_thresh_hit; + + /* total number of bytes */ + u32 rxalloc_thresh_byte; +}; + +struct htc_endpoint { + enum htc_endpoint_id eid; + u16 svc_id; + struct list_head txq; + struct list_head rx_bufq; + struct htc_endpoint_credit_dist cred_dist; + struct htc_ep_callbacks ep_cb; + int max_txq_depth; + int len_max; + int tx_proc_cnt; + int rx_proc_cnt; + struct htc_target *target; + u8 seqno; + u32 conn_flags; + struct htc_endpoint_stats ep_st; +}; + +struct htc_control_buffer { + struct htc_packet packet; + u8 *buf; +}; + +struct ath6kl_device; + +/* our HTC target state */ +struct htc_target { + struct htc_endpoint endpoint[ENDPOINT_MAX]; + struct list_head cred_dist_list; + struct list_head free_ctrl_txbuf; + struct list_head free_ctrl_rxbuf; + struct htc_credit_state_info *cred_dist_cntxt; + int tgt_creds; + unsigned int tgt_cred_sz; + spinlock_t htc_lock; + spinlock_t rx_lock; + spinlock_t tx_lock; + struct ath6kl_device *dev; + u32 htc_flags; + u32 rx_st_flags; + enum htc_endpoint_id ep_waiting; + u8 htc_tgt_ver; + + /* max messages per bundle for HTC */ + int msg_per_bndl_max; + + bool tx_bndl_enable; + int rx_bndl_enable; +}; + +void *htc_create(struct ath6kl *ar); +void htc_set_credit_dist(struct htc_target *target, + struct htc_credit_state_info *cred_info, + u16 svc_pri_order[], int len); +int htc_wait_target(struct htc_target *target); +int htc_start(struct htc_target *target); +int htc_conn_service(struct htc_target *target, + struct htc_service_connect_req *req, + struct htc_service_connect_resp *resp); +int htc_tx(struct htc_target *target, struct htc_packet *packet); +void htc_stop(struct htc_target *target); +void htc_cleanup(struct htc_target *target); +void htc_flush_txep(struct htc_target *target, + enum htc_endpoint_id endpoint, u16 tag); +void htc_flush_rx_buf(struct htc_target *target); +void htc_indicate_activity_change(struct htc_target *target, + enum htc_endpoint_id endpoint, bool active); +int htc_get_rxbuf_num(struct htc_target *target, enum htc_endpoint_id endpoint); +int htc_add_rxbuf_multiple(struct htc_target *target, struct list_head *pktq); + +static inline void set_htc_pkt_info(struct htc_packet *packet, void *context, + u8 *buf, unsigned int len, + enum htc_endpoint_id eid, u16 tag) +{ + packet->pkt_cntxt = context; + packet->buf = buf; + packet->act_len = len; + packet->endpoint = eid; + packet->info.tx.tag = tag; +} + +static inline void htc_rxpkt_reset(struct htc_packet *packet) +{ + packet->buf = packet->buf_start; + packet->act_len = 0; +} + +static inline void set_htc_rxpkt_info(struct htc_packet *packet, void *context, + u8 *buf, unsigned long len, + enum htc_endpoint_id eid) +{ + packet->pkt_cntxt = context; + packet->buf = buf; + packet->buf_start = buf; + packet->buf_len = len; + packet->endpoint = eid; +} + +static inline int get_queue_depth(struct list_head *queue) +{ + struct list_head *tmp_list; + int depth = 0; + + list_for_each(tmp_list, queue) + depth++; + + return depth; +} + +#endif diff --git a/drivers/net/wireless/ath/ath6kl/htc_hif.c b/drivers/net/wireless/ath/ath6kl/htc_hif.c new file mode 100644 index 000000000000..1bcaaec579c5 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/htc_hif.c @@ -0,0 +1,811 @@ +/* + * Copyright (c) 2007-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "core.h" +#include "target.h" +#include "hif-ops.h" +#include "htc_hif.h" +#include "debug.h" + +#define MAILBOX_FOR_BLOCK_SIZE 1 + +#define ATH6KL_TIME_QUANTUM 10 /* in ms */ + +static void ath6kl_add_io_pkt(struct ath6kl_device *dev, + struct htc_packet *packet) +{ + spin_lock_bh(&dev->lock); + list_add_tail(&packet->list, &dev->reg_io); + spin_unlock_bh(&dev->lock); +} + +static struct htc_packet *ath6kl_get_io_pkt(struct ath6kl_device *dev) +{ + struct htc_packet *packet = NULL; + + spin_lock_bh(&dev->lock); + if (!list_empty(&dev->reg_io)) { + packet = list_first_entry(&dev->reg_io, + struct htc_packet, list); + list_del(&packet->list); + } + spin_unlock_bh(&dev->lock); + + return packet; +} + +static int ath6kldev_cp_scat_dma_buf(struct hif_scatter_req *req, bool from_dma) +{ + u8 *buf; + int i; + + buf = req->virt_dma_buf; + + for (i = 0; i < req->scat_entries; i++) { + + if (from_dma) + memcpy(req->scat_list[i].buf, buf, + req->scat_list[i].len); + else + memcpy(buf, req->scat_list[i].buf, + req->scat_list[i].len); + + buf += req->scat_list[i].len; + } + + return 0; +} + +int ath6kldev_rw_comp_handler(void *context, int status) +{ + struct htc_packet *packet = context; + + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, + "ath6kldev_rw_comp_handler (pkt:0x%p , status: %d\n", + packet, status); + + packet->status = status; + packet->completion(packet->context, packet); + + return 0; +} + +static int ath6kldev_proc_dbg_intr(struct ath6kl_device *dev) +{ + u32 dummy; + int status; + + ath6kl_err("target debug interrupt\n"); + + ath6kl_target_failure(dev->ar); + + /* + * read counter to clear the interrupt, the debug error interrupt is + * counter 0. + */ + status = hif_read_write_sync(dev->ar, COUNT_DEC_ADDRESS, + (u8 *)&dummy, 4, HIF_RD_SYNC_BYTE_INC); + if (status) + WARN_ON(1); + + return status; +} + +/* mailbox recv message polling */ +int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev, u32 *lk_ahd, + int timeout) +{ + struct ath6kl_irq_proc_registers *rg; + int status = 0, i; + u8 htc_mbox = 1 << HTC_MAILBOX; + + for (i = timeout / ATH6KL_TIME_QUANTUM; i > 0; i--) { + /* this is the standard HIF way, load the reg table */ + status = hif_read_write_sync(dev->ar, HOST_INT_STATUS_ADDRESS, + (u8 *) &dev->irq_proc_reg, + sizeof(dev->irq_proc_reg), + HIF_RD_SYNC_BYTE_INC); + + if (status) { + ath6kl_err("failed to read reg table\n"); + return status; + } + + /* check for MBOX data and valid lookahead */ + if (dev->irq_proc_reg.host_int_status & htc_mbox) { + if (dev->irq_proc_reg.rx_lkahd_valid & + htc_mbox) { + /* + * Mailbox has a message and the look ahead + * is valid. + */ + rg = &dev->irq_proc_reg; + *lk_ahd = + le32_to_cpu(rg->rx_lkahd[HTC_MAILBOX]); + break; + } + } + + /* delay a little */ + mdelay(ATH6KL_TIME_QUANTUM); + ath6kl_dbg(ATH6KL_DBG_HTC_RECV, "retry mbox poll : %d\n", i); + } + + if (i == 0) { + ath6kl_err("timeout waiting for recv message\n"); + status = -ETIME; + /* check if the target asserted */ + if (dev->irq_proc_reg.counter_int_status & + ATH6KL_TARGET_DEBUG_INTR_MASK) + /* + * Target failure handler will be called in case of + * an assert. + */ + ath6kldev_proc_dbg_intr(dev); + } + + return status; +} + +/* + * Disable packet reception (used in case the host runs out of buffers) + * using the interrupt enable registers through the host I/F + */ +int ath6kldev_rx_control(struct ath6kl_device *dev, bool enable_rx) +{ + struct ath6kl_irq_enable_reg regs; + int status = 0; + + /* take the lock to protect interrupt enable shadows */ + spin_lock_bh(&dev->lock); + + if (enable_rx) + dev->irq_en_reg.int_status_en |= + SM(INT_STATUS_ENABLE_MBOX_DATA, 0x01); + else + dev->irq_en_reg.int_status_en &= + ~SM(INT_STATUS_ENABLE_MBOX_DATA, 0x01); + + memcpy(®s, &dev->irq_en_reg, sizeof(regs)); + + spin_unlock_bh(&dev->lock); + + status = hif_read_write_sync(dev->ar, INT_STATUS_ENABLE_ADDRESS, + ®s.int_status_en, + sizeof(struct ath6kl_irq_enable_reg), + HIF_WR_SYNC_BYTE_INC); + + return status; +} + +static void ath6kldev_rw_async_handler(struct htc_target *target, + struct htc_packet *packet) +{ + struct ath6kl_device *dev = target->dev; + struct hif_scatter_req *req = packet->pkt_cntxt; + + req->status = packet->status; + + ath6kl_add_io_pkt(dev, packet); + + req->complete(req); +} + +static int ath6kldev_rw_scatter(struct ath6kl *ar, struct hif_scatter_req *req) +{ + struct ath6kl_device *dev = ar->htc_target->dev; + struct htc_packet *packet = NULL; + int status = 0; + u32 request = req->req; + u8 *virt_dma_buf; + + if (!req->len) + return 0; + + if (request & HIF_ASYNCHRONOUS) { + /* use an I/O packet to carry this request */ + packet = ath6kl_get_io_pkt(dev); + if (!packet) { + status = -ENOMEM; + goto out; + } + + packet->pkt_cntxt = req; + packet->completion = ath6kldev_rw_async_handler; + packet->context = ar->htc_target; + } + + virt_dma_buf = req->virt_dma_buf; + + if (request & HIF_ASYNCHRONOUS) + status = hif_write_async(dev->ar, req->addr, virt_dma_buf, + req->len, request, packet); + else + status = hif_read_write_sync(dev->ar, req->addr, virt_dma_buf, + req->len, request); + +out: + if (status) + if (request & HIF_ASYNCHRONOUS) { + if (packet != NULL) + ath6kl_add_io_pkt(dev, packet); + req->status = status; + req->complete(req); + status = 0; + } + + return status; +} + +int ath6kldev_submit_scat_req(struct ath6kl_device *dev, + struct hif_scatter_req *scat_req, bool read) +{ + int status = 0; + + if (read) { + scat_req->req = HIF_RD_SYNC_BLOCK_FIX; + scat_req->addr = dev->ar->mbox_info.htc_addr; + } else { + scat_req->req = HIF_WR_ASYNC_BLOCK_INC; + + scat_req->addr = + (scat_req->len > HIF_MBOX_WIDTH) ? + dev->ar->mbox_info.htc_ext_addr : + dev->ar->mbox_info.htc_addr; + } + + ath6kl_dbg((ATH6KL_DBG_HTC_RECV | ATH6KL_DBG_HTC_SEND), + "ath6kldev_submit_scat_req, entries: %d, total len: %d mbox:0x%X (mode: %s : %s)\n", + scat_req->scat_entries, scat_req->len, + scat_req->addr, !read ? "async" : "sync", + (read) ? "rd" : "wr"); + + if (!read && dev->virt_scat) + status = ath6kldev_cp_scat_dma_buf(scat_req, false); + + if (status) { + if (!read) { + scat_req->status = status; + scat_req->complete(scat_req); + return 0; + } + return status; + } + + status = dev->hif_scat_info.rw_scat_func(dev->ar, scat_req); + + if (read) { + /* in sync mode, we can touch the scatter request */ + scat_req->status = status; + if (!status && dev->virt_scat) + scat_req->status = + ath6kldev_cp_scat_dma_buf(scat_req, true); + } + + return status; +} + +/* + * function to set up virtual scatter support if HIF + * layer has not implemented the interface. + */ +static int ath6kldev_setup_virt_scat_sup(struct ath6kl_device *dev) +{ + struct hif_scatter_req *scat_req; + int buf_sz, scat_req_sz, scat_list_sz; + int i, status = 0; + u8 *virt_dma_buf; + + buf_sz = 2 * L1_CACHE_BYTES + ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER; + + scat_list_sz = (ATH6KL_SCATTER_ENTRIES_PER_REQ - 1) * + sizeof(struct hif_scatter_item); + scat_req_sz = sizeof(*scat_req) + scat_list_sz; + + for (i = 0; i < ATH6KL_SCATTER_REQS; i++) { + scat_req = kzalloc(scat_req_sz, GFP_KERNEL); + + if (!scat_req) { + status = -ENOMEM; + break; + } + + virt_dma_buf = kzalloc(buf_sz, GFP_KERNEL); + if (!virt_dma_buf) { + kfree(scat_req); + status = -ENOMEM; + break; + } + + scat_req->virt_dma_buf = + (u8 *)L1_CACHE_ALIGN((unsigned long)virt_dma_buf); + + /* we emulate a DMA bounce interface */ + hif_scatter_req_add(dev->ar, scat_req); + } + + if (status) + ath6kl_hif_cleanup_scatter(dev->ar); + else { + dev->hif_scat_info.rw_scat_func = ath6kldev_rw_scatter; + dev->hif_scat_info.max_scat_entries = + ATH6KL_SCATTER_ENTRIES_PER_REQ; + dev->hif_scat_info.max_xfer_szper_scatreq = + ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER; + dev->virt_scat = true; + } + + return status; +} + +int ath6kldev_setup_msg_bndl(struct ath6kl_device *dev, int max_msg_per_trans) +{ + int status; + + status = ath6kl_hif_enable_scatter(dev->ar, &dev->hif_scat_info); + + if (status) { + ath6kl_warn("hif does not support scatter requests (%d)\n", + status); + + /* we can try to use a virtual DMA scatter mechanism */ + status = ath6kldev_setup_virt_scat_sup(dev); + } + + if (!status) + ath6kl_dbg(ATH6KL_DBG_ANY, "max scatter items:%d: maxlen:%d\n", + dev->hif_scat_info.max_scat_entries, + dev->hif_scat_info.max_xfer_szper_scatreq); + + return status; +} + +static int ath6kldev_proc_counter_intr(struct ath6kl_device *dev) +{ + u8 counter_int_status; + + ath6kl_dbg(ATH6KL_DBG_IRQ, "counter interrupt\n"); + + counter_int_status = dev->irq_proc_reg.counter_int_status & + dev->irq_en_reg.cntr_int_status_en; + + ath6kl_dbg(ATH6KL_DBG_IRQ, + "valid interrupt source(s) in COUNTER_INT_STATUS: 0x%x\n", + counter_int_status); + + /* + * NOTE: other modules like GMBOX may use the counter interrupt for + * credit flow control on other counters, we only need to check for + * the debug assertion counter interrupt. + */ + if (counter_int_status & ATH6KL_TARGET_DEBUG_INTR_MASK) + return ath6kldev_proc_dbg_intr(dev); + + return 0; +} + +static int ath6kldev_proc_err_intr(struct ath6kl_device *dev) +{ + int status; + u8 error_int_status; + u8 reg_buf[4]; + + ath6kl_dbg(ATH6KL_DBG_IRQ, "error interrupt\n"); + + error_int_status = dev->irq_proc_reg.error_int_status & 0x0F; + if (!error_int_status) { + WARN_ON(1); + return -EIO; + } + + ath6kl_dbg(ATH6KL_DBG_IRQ, + "valid interrupt source(s) in ERROR_INT_STATUS: 0x%x\n", + error_int_status); + + if (MS(ERROR_INT_STATUS_WAKEUP, error_int_status)) + ath6kl_dbg(ATH6KL_DBG_IRQ, "error : wakeup\n"); + + if (MS(ERROR_INT_STATUS_RX_UNDERFLOW, error_int_status)) + ath6kl_err("rx underflow\n"); + + if (MS(ERROR_INT_STATUS_TX_OVERFLOW, error_int_status)) + ath6kl_err("tx overflow\n"); + + /* Clear the interrupt */ + dev->irq_proc_reg.error_int_status &= ~error_int_status; + + /* set W1C value to clear the interrupt, this hits the register first */ + reg_buf[0] = error_int_status; + reg_buf[1] = 0; + reg_buf[2] = 0; + reg_buf[3] = 0; + + status = hif_read_write_sync(dev->ar, ERROR_INT_STATUS_ADDRESS, + reg_buf, 4, HIF_WR_SYNC_BYTE_FIX); + + if (status) + WARN_ON(1); + + return status; +} + +static int ath6kldev_proc_cpu_intr(struct ath6kl_device *dev) +{ + int status; + u8 cpu_int_status; + u8 reg_buf[4]; + + ath6kl_dbg(ATH6KL_DBG_IRQ, "cpu interrupt\n"); + + cpu_int_status = dev->irq_proc_reg.cpu_int_status & + dev->irq_en_reg.cpu_int_status_en; + if (!cpu_int_status) { + WARN_ON(1); + return -EIO; + } + + ath6kl_dbg(ATH6KL_DBG_IRQ, + "valid interrupt source(s) in CPU_INT_STATUS: 0x%x\n", + cpu_int_status); + + /* Clear the interrupt */ + dev->irq_proc_reg.cpu_int_status &= ~cpu_int_status; + + /* + * Set up the register transfer buffer to hit the register 4 times , + * this is done to make the access 4-byte aligned to mitigate issues + * with host bus interconnects that restrict bus transfer lengths to + * be a multiple of 4-bytes. + */ + + /* set W1C value to clear the interrupt, this hits the register first */ + reg_buf[0] = cpu_int_status; + /* the remaining are set to zero which have no-effect */ + reg_buf[1] = 0; + reg_buf[2] = 0; + reg_buf[3] = 0; + + status = hif_read_write_sync(dev->ar, CPU_INT_STATUS_ADDRESS, + reg_buf, 4, HIF_WR_SYNC_BYTE_FIX); + + if (status) + WARN_ON(1); + + return status; +} + +/* process pending interrupts synchronously */ +static int proc_pending_irqs(struct ath6kl_device *dev, bool *done) +{ + struct ath6kl_irq_proc_registers *rg; + int status = 0; + u8 host_int_status = 0; + u32 lk_ahd = 0; + u8 htc_mbox = 1 << HTC_MAILBOX; + + ath6kl_dbg(ATH6KL_DBG_IRQ, "proc_pending_irqs: (dev: 0x%p)\n", dev); + + /* + * NOTE: HIF implementation guarantees that the context of this + * call allows us to perform SYNCHRONOUS I/O, that is we can block, + * sleep or call any API that can block or switch thread/task + * contexts. This is a fully schedulable context. + */ + + /* + * Process pending intr only when int_status_en is clear, it may + * result in unnecessary bus transaction otherwise. Target may be + * unresponsive at the time. + */ + if (dev->irq_en_reg.int_status_en) { + /* + * Read the first 28 bytes of the HTC register table. This + * will yield us the value of different int status + * registers and the lookahead registers. + * + * length = sizeof(int_status) + sizeof(cpu_int_status) + * + sizeof(error_int_status) + + * sizeof(counter_int_status) + + * sizeof(mbox_frame) + sizeof(rx_lkahd_valid) + * + sizeof(hole) + sizeof(rx_lkahd) + + * sizeof(int_status_en) + + * sizeof(cpu_int_status_en) + + * sizeof(err_int_status_en) + + * sizeof(cntr_int_status_en); + */ + status = hif_read_write_sync(dev->ar, HOST_INT_STATUS_ADDRESS, + (u8 *) &dev->irq_proc_reg, + sizeof(dev->irq_proc_reg), + HIF_RD_SYNC_BYTE_INC); + if (status) + goto out; + + if (AR_DBG_LVL_CHECK(ATH6KL_DBG_IRQ)) + ath6kl_dump_registers(dev, &dev->irq_proc_reg, + &dev->irq_en_reg); + + /* Update only those registers that are enabled */ + host_int_status = dev->irq_proc_reg.host_int_status & + dev->irq_en_reg.int_status_en; + + /* Look at mbox status */ + if (host_int_status & htc_mbox) { + /* + * Mask out pending mbox value, we use "lookAhead as + * the real flag for mbox processing. + */ + host_int_status &= ~htc_mbox; + if (dev->irq_proc_reg.rx_lkahd_valid & + htc_mbox) { + rg = &dev->irq_proc_reg; + lk_ahd = le32_to_cpu(rg->rx_lkahd[HTC_MAILBOX]); + if (!lk_ahd) + ath6kl_err("lookAhead is zero!\n"); + } + } + } + + if (!host_int_status && !lk_ahd) { + *done = true; + goto out; + } + + if (lk_ahd) { + int fetched = 0; + + ath6kl_dbg(ATH6KL_DBG_IRQ, + "pending mailbox msg, lk_ahd: 0x%X\n", lk_ahd); + /* + * Mailbox Interrupt, the HTC layer may issue async + * requests to empty the mailbox. When emptying the recv + * mailbox we use the async handler above called from the + * completion routine of the callers read request. This can + * improve performance by reducing context switching when + * we rapidly pull packets. + */ + status = dev->msg_pending(dev->htc_cnxt, &lk_ahd, &fetched); + if (status) + goto out; + + if (!fetched) + /* + * HTC could not pull any messages out due to lack + * of resources. + */ + dev->chk_irq_status_cnt = 0; + } + + /* now handle the rest of them */ + ath6kl_dbg(ATH6KL_DBG_IRQ, + "valid interrupt source(s) for other interrupts: 0x%x\n", + host_int_status); + + if (MS(HOST_INT_STATUS_CPU, host_int_status)) { + /* CPU Interrupt */ + status = ath6kldev_proc_cpu_intr(dev); + if (status) + goto out; + } + + if (MS(HOST_INT_STATUS_ERROR, host_int_status)) { + /* Error Interrupt */ + status = ath6kldev_proc_err_intr(dev); + if (status) + goto out; + } + + if (MS(HOST_INT_STATUS_COUNTER, host_int_status)) + /* Counter Interrupt */ + status = ath6kldev_proc_counter_intr(dev); + +out: + /* + * An optimization to bypass reading the IRQ status registers + * unecessarily which can re-wake the target, if upper layers + * determine that we are in a low-throughput mode, we can rely on + * taking another interrupt rather than re-checking the status + * registers which can re-wake the target. + * + * NOTE : for host interfaces that makes use of detecting pending + * mbox messages at hif can not use this optimization due to + * possible side effects, SPI requires the host to drain all + * messages from the mailbox before exiting the ISR routine. + */ + + ath6kl_dbg(ATH6KL_DBG_IRQ, + "bypassing irq status re-check, forcing done\n"); + + *done = true; + + ath6kl_dbg(ATH6KL_DBG_IRQ, + "proc_pending_irqs: (done:%d, status=%d\n", *done, status); + + return status; +} + +/* interrupt handler, kicks off all interrupt processing */ +int ath6kldev_intr_bh_handler(struct ath6kl *ar) +{ + struct ath6kl_device *dev = ar->htc_target->dev; + int status = 0; + bool done = false; + + /* + * Reset counter used to flag a re-scan of IRQ status registers on + * the target. + */ + dev->chk_irq_status_cnt = 0; + + /* + * IRQ processing is synchronous, interrupt status registers can be + * re-read. + */ + while (!done) { + status = proc_pending_irqs(dev, &done); + if (status) + break; + } + + return status; +} + +static int ath6kldev_enable_intrs(struct ath6kl_device *dev) +{ + struct ath6kl_irq_enable_reg regs; + int status; + + spin_lock_bh(&dev->lock); + + /* Enable all but ATH6KL CPU interrupts */ + dev->irq_en_reg.int_status_en = + SM(INT_STATUS_ENABLE_ERROR, 0x01) | + SM(INT_STATUS_ENABLE_CPU, 0x01) | + SM(INT_STATUS_ENABLE_COUNTER, 0x01); + + /* + * NOTE: There are some cases where HIF can do detection of + * pending mbox messages which is disabled now. + */ + dev->irq_en_reg.int_status_en |= SM(INT_STATUS_ENABLE_MBOX_DATA, 0x01); + + /* Set up the CPU Interrupt status Register */ + dev->irq_en_reg.cpu_int_status_en = 0; + + /* Set up the Error Interrupt status Register */ + dev->irq_en_reg.err_int_status_en = + SM(ERROR_STATUS_ENABLE_RX_UNDERFLOW, 0x01) | + SM(ERROR_STATUS_ENABLE_TX_OVERFLOW, 0x1); + + /* + * Enable Counter interrupt status register to get fatal errors for + * debugging. + */ + dev->irq_en_reg.cntr_int_status_en = SM(COUNTER_INT_STATUS_ENABLE_BIT, + ATH6KL_TARGET_DEBUG_INTR_MASK); + memcpy(®s, &dev->irq_en_reg, sizeof(regs)); + + spin_unlock_bh(&dev->lock); + + status = hif_read_write_sync(dev->ar, INT_STATUS_ENABLE_ADDRESS, + ®s.int_status_en, sizeof(regs), + HIF_WR_SYNC_BYTE_INC); + + if (status) + ath6kl_err("failed to update interrupt ctl reg err: %d\n", + status); + + return status; +} + +int ath6kldev_disable_intrs(struct ath6kl_device *dev) +{ + struct ath6kl_irq_enable_reg regs; + + spin_lock_bh(&dev->lock); + /* Disable all interrupts */ + dev->irq_en_reg.int_status_en = 0; + dev->irq_en_reg.cpu_int_status_en = 0; + dev->irq_en_reg.err_int_status_en = 0; + dev->irq_en_reg.cntr_int_status_en = 0; + memcpy(®s, &dev->irq_en_reg, sizeof(regs)); + spin_unlock_bh(&dev->lock); + + return hif_read_write_sync(dev->ar, INT_STATUS_ENABLE_ADDRESS, + ®s.int_status_en, sizeof(regs), + HIF_WR_SYNC_BYTE_INC); +} + +/* enable device interrupts */ +int ath6kldev_unmask_intrs(struct ath6kl_device *dev) +{ + int status = 0; + + /* + * Make sure interrupt are disabled before unmasking at the HIF + * layer. The rationale here is that between device insertion + * (where we clear the interrupts the first time) and when HTC + * is finally ready to handle interrupts, other software can perform + * target "soft" resets. The ATH6KL interrupt enables reset back to an + * "enabled" state when this happens. + */ + ath6kldev_disable_intrs(dev); + + /* unmask the host controller interrupts */ + ath6kl_hif_irq_enable(dev->ar); + status = ath6kldev_enable_intrs(dev); + + return status; +} + +/* disable all device interrupts */ +int ath6kldev_mask_intrs(struct ath6kl_device *dev) +{ + /* + * Mask the interrupt at the HIF layer to avoid any stray interrupt + * taken while we zero out our shadow registers in + * ath6kldev_disable_intrs(). + */ + ath6kl_hif_irq_disable(dev->ar); + + return ath6kldev_disable_intrs(dev); +} + +int ath6kldev_setup(struct ath6kl_device *dev) +{ + int status = 0; + int i; + struct htc_packet *packet; + + /* initialize our free list of IO packets */ + INIT_LIST_HEAD(&dev->reg_io); + spin_lock_init(&dev->lock); + + /* carve up register I/O packets (these are for ASYNC register I/O ) */ + for (i = 0; i < ATH6KL_MAX_REG_IO_BUFFERS; i++) { + packet = &dev->reg_io_buf[i].packet; + set_htc_rxpkt_info(packet, dev, dev->reg_io_buf[i].buf, + ATH6KL_REG_IO_BUFFER_SIZE, 0); + ath6kl_add_io_pkt(dev, packet); + } + + /* + * NOTE: we actually get the block size of a mailbox other than 0, + * for SDIO the block size on mailbox 0 is artificially set to 1. + * So we use the block size that is set for the other 3 mailboxes. + */ + dev->block_sz = dev->ar->mbox_info.block_size; + + /* must be a power of 2 */ + if ((dev->block_sz & (dev->block_sz - 1)) != 0) { + WARN_ON(1); + goto fail_setup; + } + + /* assemble mask, used for padding to a block */ + dev->block_mask = dev->block_sz - 1; + + ath6kl_dbg(ATH6KL_DBG_TRC, "block size: %d, mbox addr:0x%X\n", + dev->block_sz, dev->ar->mbox_info.htc_addr); + + ath6kl_dbg(ATH6KL_DBG_TRC, + "hif interrupt processing is sync only\n"); + + status = ath6kldev_disable_intrs(dev); + +fail_setup: + return status; + +} diff --git a/drivers/net/wireless/ath/ath6kl/htc_hif.h b/drivers/net/wireless/ath/ath6kl/htc_hif.h new file mode 100644 index 000000000000..d770d4ec612e --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/htc_hif.h @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2007-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef HTC_HIF_H +#define HTC_HIF_H + +#include "htc.h" +#include "hif.h" + +#define ATH6KL_MAILBOXES 4 + +/* HTC runs over mailbox 0 */ +#define HTC_MAILBOX 0 + +#define ATH6KL_TARGET_DEBUG_INTR_MASK 0x01 + +#define OTHER_INTS_ENABLED (INT_STATUS_ENABLE_ERROR_MASK | \ + INT_STATUS_ENABLE_CPU_MASK | \ + INT_STATUS_ENABLE_COUNTER_MASK) + +#define ATH6KL_REG_IO_BUFFER_SIZE 32 +#define ATH6KL_MAX_REG_IO_BUFFERS 8 +#define ATH6KL_SCATTER_ENTRIES_PER_REQ 16 +#define ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER (16 * 1024) +#define ATH6KL_SCATTER_REQS 4 + +#ifndef A_CACHE_LINE_PAD +#define A_CACHE_LINE_PAD 128 +#endif +#define ATH6KL_MIN_SCATTER_ENTRIES_PER_REQ 2 +#define ATH6KL_MIN_TRANSFER_SIZE_PER_SCATTER (4 * 1024) + +struct ath6kl_irq_proc_registers { + u8 host_int_status; + u8 cpu_int_status; + u8 error_int_status; + u8 counter_int_status; + u8 mbox_frame; + u8 rx_lkahd_valid; + u8 host_int_status2; + u8 gmbox_rx_avail; + __le32 rx_lkahd[2]; + __le32 rx_gmbox_lkahd_alias[2]; +} __packed; + +struct ath6kl_irq_enable_reg { + u8 int_status_en; + u8 cpu_int_status_en; + u8 err_int_status_en; + u8 cntr_int_status_en; +} __packed; + +/* buffers for ASYNC I/O */ +struct ath6kl_async_reg_io_buffer { + struct htc_packet packet; + u8 pad1[A_CACHE_LINE_PAD]; + /* cache-line safe with pads around */ + u8 buf[ATH6KL_REG_IO_BUFFER_SIZE]; + u8 pad2[A_CACHE_LINE_PAD]; +}; + +struct ath6kl_device { + spinlock_t lock; + u8 pad1[A_CACHE_LINE_PAD]; + struct ath6kl_irq_proc_registers irq_proc_reg; + u8 pad2[A_CACHE_LINE_PAD]; + struct ath6kl_irq_enable_reg irq_en_reg; + u8 pad3[A_CACHE_LINE_PAD]; + u32 block_sz; + u32 block_mask; + struct htc_target *htc_cnxt; + struct list_head reg_io; + struct ath6kl_async_reg_io_buffer reg_io_buf[ATH6KL_MAX_REG_IO_BUFFERS]; + int (*msg_pending) (struct htc_target *target, u32 lk_ahds[], + int *npkts_fetched); + struct hif_dev_scat_sup_info hif_scat_info; + bool virt_scat; + int max_rx_bndl_sz; + int max_tx_bndl_sz; + int chk_irq_status_cnt; + struct ath6kl *ar; +}; + +int ath6kldev_setup(struct ath6kl_device *dev); +int ath6kldev_unmask_intrs(struct ath6kl_device *dev); +int ath6kldev_mask_intrs(struct ath6kl_device *dev); +int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev, + u32 *lk_ahd, int timeout); +int ath6kldev_rx_control(struct ath6kl_device *dev, bool enable_rx); +int ath6kldev_disable_intrs(struct ath6kl_device *dev); + +int ath6kldev_rw_comp_handler(void *context, int status); +int ath6kldev_intr_bh_handler(struct ath6kl *ar); + +/* Scatter Function and Definitions */ +int ath6kldev_setup_msg_bndl(struct ath6kl_device *dev, int max_msg_per_xfer); +int ath6kldev_submit_scat_req(struct ath6kl_device *dev, + struct hif_scatter_req *scat_req, bool read); + +#endif /*ATH6KL_H_ */ diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c new file mode 100644 index 000000000000..fe61871e9874 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/init.c @@ -0,0 +1,1293 @@ + +/* + * Copyright (c) 2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/mmc/sdio_func.h> +#include "core.h" +#include "cfg80211.h" +#include "target.h" +#include "debug.h" +#include "hif-ops.h" + +unsigned int debug_mask; + +module_param(debug_mask, uint, 0644); + +/* + * Include definitions here that can be used to tune the WLAN module + * behavior. Different customers can tune the behavior as per their needs, + * here. + */ + +/* + * This configuration item enable/disable keepalive support. + * Keepalive support: In the absence of any data traffic to AP, null + * frames will be sent to the AP at periodic interval, to keep the association + * active. This configuration item defines the periodic interval. + * Use value of zero to disable keepalive support + * Default: 60 seconds + */ +#define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60 + +/* + * This configuration item sets the value of disconnect timeout + * Firmware delays sending the disconnec event to the host for this + * timeout after is gets disconnected from the current AP. + * If the firmware successly roams within the disconnect timeout + * it sends a new connect event + */ +#define WLAN_CONFIG_DISCONNECT_TIMEOUT 10 + +#define CONFIG_AR600x_DEBUG_UART_TX_PIN 8 + +enum addr_type { + DATASET_PATCH_ADDR, + APP_LOAD_ADDR, + APP_START_OVERRIDE_ADDR, +}; + +#define ATH6KL_DATA_OFFSET 64 +struct sk_buff *ath6kl_buf_alloc(int size) +{ + struct sk_buff *skb; + u16 reserved; + + /* Add chacheline space at front and back of buffer */ + reserved = (2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET + + sizeof(struct htc_packet); + skb = dev_alloc_skb(size + reserved); + + if (skb) + skb_reserve(skb, reserved - L1_CACHE_BYTES); + return skb; +} + +void ath6kl_init_profile_info(struct ath6kl *ar) +{ + ar->ssid_len = 0; + memset(ar->ssid, 0, sizeof(ar->ssid)); + + ar->dot11_auth_mode = OPEN_AUTH; + ar->auth_mode = NONE_AUTH; + ar->prwise_crypto = NONE_CRYPT; + ar->prwise_crypto_len = 0; + ar->grp_crypto = NONE_CRYPT; + ar->grp_crpto_len = 0; + memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list)); + memset(ar->req_bssid, 0, sizeof(ar->req_bssid)); + memset(ar->bssid, 0, sizeof(ar->bssid)); + ar->bss_ch = 0; + ar->nw_type = ar->next_mode = INFRA_NETWORK; +} + +static u8 ath6kl_get_fw_iftype(struct ath6kl *ar) +{ + switch (ar->nw_type) { + case INFRA_NETWORK: + return HI_OPTION_FW_MODE_BSS_STA; + case ADHOC_NETWORK: + return HI_OPTION_FW_MODE_IBSS; + case AP_NETWORK: + return HI_OPTION_FW_MODE_AP; + default: + ath6kl_err("Unsupported interface type :%d\n", ar->nw_type); + return 0xff; + } +} + +static inline u32 ath6kl_get_hi_item_addr(struct ath6kl *ar, + u32 item_offset) +{ + u32 addr = 0; + + if (ar->target_type == TARGET_TYPE_AR6003) + addr = ATH6KL_HI_START_ADDR + item_offset; + + return addr; +} + +static int ath6kl_set_host_app_area(struct ath6kl *ar) +{ + u32 address, data; + struct host_app_area host_app_area; + + /* Fetch the address of the host_app_area_s + * instance in the host interest area */ + address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest)); + address = TARG_VTOP(address); + + if (ath6kl_read_reg_diag(ar, &address, &data)) + return -EIO; + + address = TARG_VTOP(data); + host_app_area.wmi_protocol_ver = WMI_PROTOCOL_VERSION; + if (ath6kl_access_datadiag(ar, address, + (u8 *)&host_app_area, + sizeof(struct host_app_area), false)) + return -EIO; + + return 0; +} + +static inline void set_ac2_ep_map(struct ath6kl *ar, + u8 ac, + enum htc_endpoint_id ep) +{ + ar->ac2ep_map[ac] = ep; + ar->ep2ac_map[ep] = ac; +} + +/* connect to a service */ +static int ath6kl_connectservice(struct ath6kl *ar, + struct htc_service_connect_req *con_req, + char *desc) +{ + int status; + struct htc_service_connect_resp response; + + memset(&response, 0, sizeof(response)); + + status = htc_conn_service(ar->htc_target, con_req, &response); + if (status) { + ath6kl_err("failed to connect to %s service status:%d\n", + desc, status); + return status; + } + + switch (con_req->svc_id) { + case WMI_CONTROL_SVC: + if (test_bit(WMI_ENABLED, &ar->flag)) + ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint); + ar->ctrl_ep = response.endpoint; + break; + case WMI_DATA_BE_SVC: + set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint); + break; + case WMI_DATA_BK_SVC: + set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint); + break; + case WMI_DATA_VI_SVC: + set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint); + break; + case WMI_DATA_VO_SVC: + set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint); + break; + default: + ath6kl_err("service id is not mapped %d\n", con_req->svc_id); + return -EINVAL; + } + + return 0; +} + +static int ath6kl_init_service_ep(struct ath6kl *ar) +{ + struct htc_service_connect_req connect; + + memset(&connect, 0, sizeof(connect)); + + /* these fields are the same for all service endpoints */ + connect.ep_cb.rx = ath6kl_rx; + connect.ep_cb.rx_refill = ath6kl_rx_refill; + connect.ep_cb.tx_full = ath6kl_tx_queue_full; + + /* + * Set the max queue depth so that our ath6kl_tx_queue_full handler + * gets called. + */ + connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH; + connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4; + if (!connect.ep_cb.rx_refill_thresh) + connect.ep_cb.rx_refill_thresh++; + + /* connect to control service */ + connect.svc_id = WMI_CONTROL_SVC; + if (ath6kl_connectservice(ar, &connect, "WMI CONTROL")) + return -EIO; + + connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN; + + /* + * Limit the HTC message size on the send path, although e can + * receive A-MSDU frames of 4K, we will only send ethernet-sized + * (802.3) frames on the send path. + */ + connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH; + + /* + * To reduce the amount of committed memory for larger A_MSDU + * frames, use the recv-alloc threshold mechanism for larger + * packets. + */ + connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE; + connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf; + + /* + * For the remaining data services set the connection flag to + * reduce dribbling, if configured to do so. + */ + connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB; + connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK; + connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF; + + connect.svc_id = WMI_DATA_BE_SVC; + + if (ath6kl_connectservice(ar, &connect, "WMI DATA BE")) + return -EIO; + + /* connect to back-ground map this to WMI LOW_PRI */ + connect.svc_id = WMI_DATA_BK_SVC; + if (ath6kl_connectservice(ar, &connect, "WMI DATA BK")) + return -EIO; + + /* connect to Video service, map this to to HI PRI */ + connect.svc_id = WMI_DATA_VI_SVC; + if (ath6kl_connectservice(ar, &connect, "WMI DATA VI")) + return -EIO; + + /* + * Connect to VO service, this is currently not mapped to a WMI + * priority stream due to historical reasons. WMI originally + * defined 3 priorities over 3 mailboxes We can change this when + * WMI is reworked so that priorities are not dependent on + * mailboxes. + */ + connect.svc_id = WMI_DATA_VO_SVC; + if (ath6kl_connectservice(ar, &connect, "WMI DATA VO")) + return -EIO; + + return 0; +} + +static void ath6kl_init_control_info(struct ath6kl *ar) +{ + u8 ctr; + + clear_bit(WMI_ENABLED, &ar->flag); + ath6kl_init_profile_info(ar); + ar->def_txkey_index = 0; + memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list)); + ar->ch_hint = 0; + ar->listen_intvl_t = A_DEFAULT_LISTEN_INTERVAL; + ar->listen_intvl_b = 0; + ar->tx_pwr = 0; + clear_bit(SKIP_SCAN, &ar->flag); + set_bit(WMM_ENABLED, &ar->flag); + ar->intra_bss = 1; + memset(&ar->sc_params, 0, sizeof(ar->sc_params)); + ar->sc_params.short_scan_ratio = WMI_SHORTSCANRATIO_DEFAULT; + ar->sc_params.scan_ctrl_flags = DEFAULT_SCAN_CTRL_FLAGS; + + memset((u8 *)ar->sta_list, 0, + AP_MAX_NUM_STA * sizeof(struct ath6kl_sta)); + + spin_lock_init(&ar->mcastpsq_lock); + + /* Init the PS queues */ + for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { + spin_lock_init(&ar->sta_list[ctr].psq_lock); + skb_queue_head_init(&ar->sta_list[ctr].psq); + } + + skb_queue_head_init(&ar->mcastpsq); + + memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3); +} + +/* + * Set HTC/Mbox operational parameters, this can only be called when the + * target is in the BMI phase. + */ +static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val, + u8 htc_ctrl_buf) +{ + int status; + u32 blk_size; + + blk_size = ar->mbox_info.block_size; + + if (htc_ctrl_buf) + blk_size |= ((u32)htc_ctrl_buf) << 16; + + /* set the host interest area for the block size */ + status = ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_mbox_io_block_sz)), + (u8 *)&blk_size, + 4); + if (status) { + ath6kl_err("bmi_write_memory for IO block size failed\n"); + goto out; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n", + blk_size, + ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz))); + + if (mbox_isr_yield_val) { + /* set the host interest area for the mbox ISR yield limit */ + status = ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_mbox_isr_yield_limit)), + (u8 *)&mbox_isr_yield_val, + 4); + if (status) { + ath6kl_err("bmi_write_memory for yield limit failed\n"); + goto out; + } + } + +out: + return status; +} + +#define REG_DUMP_COUNT_AR6003 60 +#define REGISTER_DUMP_LEN_MAX 60 + +static void ath6kl_dump_target_assert_info(struct ath6kl *ar) +{ + u32 address; + u32 regdump_loc = 0; + int status; + u32 regdump_val[REGISTER_DUMP_LEN_MAX]; + u32 i; + + if (ar->target_type != TARGET_TYPE_AR6003) + return; + + /* the reg dump pointer is copied to the host interest area */ + address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_failure_state)); + address = TARG_VTOP(address); + + /* read RAM location through diagnostic window */ + status = ath6kl_read_reg_diag(ar, &address, ®dump_loc); + + if (status || !regdump_loc) { + ath6kl_err("failed to get ptr to register dump area\n"); + return; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "location of register dump data: 0x%X\n", + regdump_loc); + + regdump_loc = TARG_VTOP(regdump_loc); + + /* fetch register dump data */ + status = ath6kl_access_datadiag(ar, + regdump_loc, + (u8 *)®dump_val[0], + REG_DUMP_COUNT_AR6003 * (sizeof(u32)), + true); + + if (status) { + ath6kl_err("failed to get register dump\n"); + return; + } + ath6kl_dbg(ATH6KL_DBG_TRC, "Register Dump:\n"); + + for (i = 0; i < REG_DUMP_COUNT_AR6003; i++) + ath6kl_dbg(ATH6KL_DBG_TRC, " %d : 0x%8.8X\n", + i, regdump_val[i]); + +} + +void ath6kl_target_failure(struct ath6kl *ar) +{ + ath6kl_err("target asserted\n"); + + /* try dumping target assertion information (if any) */ + ath6kl_dump_target_assert_info(ar); + +} + +static int ath6kl_target_config_wlan_params(struct ath6kl *ar) +{ + int status = 0; + + /* + * Configure the device for rx dot11 header rules. "0,0" are the + * default values. Required if checksum offload is needed. Set + * RxMetaVersion to 2. + */ + if (ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, + ar->rx_meta_ver, 0, 0)) { + ath6kl_err("unable to set the rx frame format\n"); + status = -EIO; + } + + if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN) + if ((ath6kl_wmi_pmparams_cmd(ar->wmi, 0, 1, 0, 0, 1, + IGNORE_POWER_SAVE_FAIL_EVENT_DURING_SCAN)) != 0) { + ath6kl_err("unable to set power save fail event policy\n"); + status = -EIO; + } + + if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER)) + if ((ath6kl_wmi_set_lpreamble_cmd(ar->wmi, 0, + WMI_DONOT_IGNORE_BARKER_IN_ERP)) != 0) { + ath6kl_err("unable to set barker preamble policy\n"); + status = -EIO; + } + + if (ath6kl_wmi_set_keepalive_cmd(ar->wmi, + WLAN_CONFIG_KEEP_ALIVE_INTERVAL)) { + ath6kl_err("unable to set keep alive interval\n"); + status = -EIO; + } + + if (ath6kl_wmi_disctimeout_cmd(ar->wmi, + WLAN_CONFIG_DISCONNECT_TIMEOUT)) { + ath6kl_err("unable to set disconnect timeout\n"); + status = -EIO; + } + + if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST)) + if (ath6kl_wmi_set_wmm_txop(ar->wmi, WMI_TXOP_DISABLED)) { + ath6kl_err("unable to set txop bursting\n"); + status = -EIO; + } + + return status; +} + +int ath6kl_configure_target(struct ath6kl *ar) +{ + u32 param, ram_reserved_size; + u8 fw_iftype; + + fw_iftype = ath6kl_get_fw_iftype(ar); + if (fw_iftype == 0xff) + return -EINVAL; + + /* Tell target which HTC version it is used*/ + param = HTC_PROTOCOL_VERSION; + if (ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_app_host_interest)), + (u8 *)¶m, 4) != 0) { + ath6kl_err("bmi_write_memory for htc version failed\n"); + return -EIO; + } + + /* set the firmware mode to STA/IBSS/AP */ + param = 0; + + if (ath6kl_bmi_read(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_option_flag)), + (u8 *)¶m, 4) != 0) { + ath6kl_err("bmi_read_memory for setting fwmode failed\n"); + return -EIO; + } + + param |= (1 << HI_OPTION_NUM_DEV_SHIFT); + param |= (fw_iftype << HI_OPTION_FW_MODE_SHIFT); + param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT); + param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT); + + if (ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_option_flag)), + (u8 *)¶m, + 4) != 0) { + ath6kl_err("bmi_write_memory for setting fwmode failed\n"); + return -EIO; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n"); + + /* + * Hardcode the address use for the extended board data + * Ideally this should be pre-allocate by the OS at boot time + * But since it is a new feature and board data is loaded + * at init time, we have to workaround this from host. + * It is difficult to patch the firmware boot code, + * but possible in theory. + */ + + if (ar->target_type == TARGET_TYPE_AR6003) { + if (ar->version.target_ver == AR6003_REV2_VERSION) { + param = AR6003_REV2_BOARD_EXT_DATA_ADDRESS; + ram_reserved_size = AR6003_REV2_RAM_RESERVE_SIZE; + } else { + param = AR6003_REV3_BOARD_EXT_DATA_ADDRESS; + ram_reserved_size = AR6003_REV3_RAM_RESERVE_SIZE; + } + + if (ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_ext_data)), + (u8 *)¶m, 4) != 0) { + ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n"); + return -EIO; + } + if (ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_end_ram_reserve_sz)), + (u8 *)&ram_reserved_size, 4) != 0) { + ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n"); + return -EIO; + } + } + + /* set the block size for the target */ + if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0)) + /* use default number of control buffers */ + return -EIO; + + return 0; +} + +struct ath6kl *ath6kl_core_alloc(struct device *sdev) +{ + struct net_device *dev; + struct ath6kl *ar; + struct wireless_dev *wdev; + + wdev = ath6kl_cfg80211_init(sdev); + if (!wdev) { + ath6kl_err("ath6kl_cfg80211_init failed\n"); + return NULL; + } + + ar = wdev_priv(wdev); + ar->dev = sdev; + ar->wdev = wdev; + wdev->iftype = NL80211_IFTYPE_STATION; + + dev = alloc_netdev(0, "wlan%d", ether_setup); + if (!dev) { + ath6kl_err("no memory for network device instance\n"); + ath6kl_cfg80211_deinit(ar); + return NULL; + } + + dev->ieee80211_ptr = wdev; + SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy)); + wdev->netdev = dev; + ar->sme_state = SME_DISCONNECTED; + ar->auto_auth_stage = AUTH_IDLE; + + init_netdev(dev); + + ar->net_dev = dev; + ar->wlan_state = WLAN_ENABLED; + + ar->wlan_pwr_state = WLAN_POWER_STATE_ON; + + spin_lock_init(&ar->lock); + + ath6kl_init_control_info(ar); + init_waitqueue_head(&ar->event_wq); + sema_init(&ar->sem, 1); + clear_bit(DESTROY_IN_PROGRESS, &ar->flag); + + INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue); + + setup_timer(&ar->disconnect_timer, disconnect_timer_handler, + (unsigned long) dev); + + return ar; +} + +int ath6kl_unavail_ev(struct ath6kl *ar) +{ + ath6kl_destroy(ar->net_dev, 1); + + return 0; +} + +/* firmware upload */ +static u32 ath6kl_get_load_address(u32 target_ver, enum addr_type type) +{ + WARN_ON(target_ver != AR6003_REV2_VERSION && + target_ver != AR6003_REV3_VERSION); + + switch (type) { + case DATASET_PATCH_ADDR: + return (target_ver == AR6003_REV2_VERSION) ? + AR6003_REV2_DATASET_PATCH_ADDRESS : + AR6003_REV3_DATASET_PATCH_ADDRESS; + case APP_LOAD_ADDR: + return (target_ver == AR6003_REV2_VERSION) ? + AR6003_REV2_APP_LOAD_ADDRESS : + 0x1234; + case APP_START_OVERRIDE_ADDR: + return (target_ver == AR6003_REV2_VERSION) ? + AR6003_REV2_APP_START_OVERRIDE : + AR6003_REV3_APP_START_OVERRIDE; + default: + return 0; + } +} + +static int ath6kl_get_fw(struct ath6kl *ar, const char *filename, + u8 **fw, size_t *fw_len) +{ + const struct firmware *fw_entry; + int ret; + + ret = request_firmware(&fw_entry, filename, ar->dev); + if (ret) + return ret; + + *fw_len = fw_entry->size; + *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL); + + if (*fw == NULL) + ret = -ENOMEM; + + release_firmware(fw_entry); + + return ret; +} + +static int ath6kl_fetch_board_file(struct ath6kl *ar) +{ + const char *filename; + int ret; + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_BOARD_DATA_FILE; + break; + default: + filename = AR6003_REV3_BOARD_DATA_FILE; + break; + } + + ret = ath6kl_get_fw(ar, filename, &ar->fw_board, + &ar->fw_board_len); + if (ret == 0) { + /* managed to get proper board file */ + return 0; + } + + /* there was no proper board file, try to use default instead */ + ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n", + filename, ret); + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_DEFAULT_BOARD_DATA_FILE; + break; + default: + filename = AR6003_REV3_DEFAULT_BOARD_DATA_FILE; + break; + } + + ret = ath6kl_get_fw(ar, filename, &ar->fw_board, + &ar->fw_board_len); + if (ret) { + ath6kl_err("Failed to get default board file %s: %d\n", + filename, ret); + return ret; + } + + ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n"); + ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n"); + + return 0; +} + + +static int ath6kl_upload_board_file(struct ath6kl *ar) +{ + u32 board_address, board_ext_address, param; + int ret; + + if (ar->fw_board == NULL) { + ret = ath6kl_fetch_board_file(ar); + if (ret) + return ret; + } + + /* Determine where in Target RAM to write Board Data */ + ath6kl_bmi_read(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_data)), + (u8 *) &board_address, 4); + ath6kl_dbg(ATH6KL_DBG_TRC, "board data download addr: 0x%x\n", + board_address); + + /* determine where in target ram to write extended board data */ + ath6kl_bmi_read(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_ext_data)), + (u8 *) &board_ext_address, 4); + + ath6kl_dbg(ATH6KL_DBG_TRC, "board file download addr: 0x%x\n", + board_ext_address); + + if (board_ext_address == 0) { + ath6kl_err("Failed to get board file target address.\n"); + return -EINVAL; + } + + if (ar->fw_board_len == (AR6003_BOARD_DATA_SZ + + AR6003_BOARD_EXT_DATA_SZ)) { + /* write extended board data */ + ret = ath6kl_bmi_write(ar, board_ext_address, + ar->fw_board + AR6003_BOARD_DATA_SZ, + AR6003_BOARD_EXT_DATA_SZ); + + if (ret) { + ath6kl_err("Failed to write extended board data: %d\n", + ret); + return ret; + } + + /* record that extended board data is initialized */ + param = (AR6003_BOARD_EXT_DATA_SZ << 16) | 1; + ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_ext_data_config)), + (unsigned char *) ¶m, 4); + } + + if (ar->fw_board_len < AR6003_BOARD_DATA_SZ) { + ath6kl_err("Too small board file: %zu\n", ar->fw_board_len); + ret = -EINVAL; + return ret; + } + + ret = ath6kl_bmi_write(ar, board_address, ar->fw_board, + AR6003_BOARD_DATA_SZ); + + if (ret) { + ath6kl_err("Board file bmi write failed: %d\n", ret); + return ret; + } + + /* record the fact that Board Data IS initialized */ + param = 1; + ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_board_data_initialized)), + (u8 *)¶m, 4); + + return ret; +} + +static int ath6kl_upload_otp(struct ath6kl *ar) +{ + const char *filename; + u32 address, param; + int ret; + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_OTP_FILE; + break; + default: + filename = AR6003_REV3_OTP_FILE; + break; + } + + if (ar->fw_otp == NULL) { + ret = ath6kl_get_fw(ar, filename, &ar->fw_otp, + &ar->fw_otp_len); + if (ret) { + ath6kl_err("Failed to get OTP file %s: %d\n", + filename, ret); + return ret; + } + } + + address = ath6kl_get_load_address(ar->version.target_ver, + APP_LOAD_ADDR); + + ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp, + ar->fw_otp_len); + if (ret) { + ath6kl_err("Failed to upload OTP file: %d\n", ret); + return ret; + } + + /* execute the OTP code */ + param = 0; + address = ath6kl_get_load_address(ar->version.target_ver, + APP_START_OVERRIDE_ADDR); + ath6kl_bmi_execute(ar, address, ¶m); + + return ret; +} + +static int ath6kl_upload_firmware(struct ath6kl *ar) +{ + const char *filename; + u32 address; + int ret; + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_FIRMWARE_FILE; + break; + default: + filename = AR6003_REV3_FIRMWARE_FILE; + break; + } + + if (ar->fw == NULL) { + ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len); + if (ret) { + ath6kl_err("Failed to get firmware file %s: %d\n", + filename, ret); + return ret; + } + } + + address = ath6kl_get_load_address(ar->version.target_ver, + APP_LOAD_ADDR); + + ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len); + + if (ret) { + ath6kl_err("Failed to write firmware: %d\n", ret); + return ret; + } + + /* Set starting address for firmware */ + address = ath6kl_get_load_address(ar->version.target_ver, + APP_START_OVERRIDE_ADDR); + ath6kl_bmi_set_app_start(ar, address); + + return ret; +} + +static int ath6kl_upload_patch(struct ath6kl *ar) +{ + const char *filename; + u32 address, param; + int ret; + + switch (ar->version.target_ver) { + case AR6003_REV2_VERSION: + filename = AR6003_REV2_PATCH_FILE; + break; + default: + filename = AR6003_REV3_PATCH_FILE; + break; + } + + if (ar->fw_patch == NULL) { + ret = ath6kl_get_fw(ar, filename, &ar->fw_patch, + &ar->fw_patch_len); + if (ret) { + ath6kl_err("Failed to get patch file %s: %d\n", + filename, ret); + return ret; + } + } + + address = ath6kl_get_load_address(ar->version.target_ver, + DATASET_PATCH_ADDR); + + ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len); + if (ret) { + ath6kl_err("Failed to write patch file: %d\n", ret); + return ret; + } + + param = address; + ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_dset_list_head)), + (unsigned char *) ¶m, 4); + + return 0; +} + +static int ath6kl_init_upload(struct ath6kl *ar) +{ + u32 param, options, sleep, address; + int status = 0; + + if (ar->target_type != TARGET_TYPE_AR6003) + return -EINVAL; + + /* temporarily disable system sleep */ + address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS; + status = ath6kl_bmi_reg_read(ar, address, ¶m); + if (status) + return status; + + options = param; + + param |= ATH6KL_OPTION_SLEEP_DISABLE; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS; + status = ath6kl_bmi_reg_read(ar, address, ¶m); + if (status) + return status; + + sleep = param; + + param |= SM(SYSTEM_SLEEP_DISABLE, 1); + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n", + options, sleep); + + /* program analog PLL register */ + status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER, + 0xF9104001); + if (status) + return status; + + /* Run at 80/88MHz by default */ + param = SM(CPU_CLOCK_STANDARD, 1); + + address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + param = 0; + address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS; + param = SM(LPO_CAL_ENABLE, 1); + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + /* WAR to avoid SDIO CRC err */ + if (ar->version.target_ver == AR6003_REV2_VERSION) { + ath6kl_err("temporary war to avoid sdio crc error\n"); + + param = 0x20; + + address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + } + + /* write EEPROM data to Target RAM */ + status = ath6kl_upload_board_file(ar); + if (status) + return status; + + /* transfer One time Programmable data */ + status = ath6kl_upload_otp(ar); + if (status) + return status; + + /* Download Target firmware */ + status = ath6kl_upload_firmware(ar); + if (status) + return status; + + status = ath6kl_upload_patch(ar); + if (status) + return status; + + /* Restore system sleep */ + address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS; + status = ath6kl_bmi_reg_write(ar, address, sleep); + if (status) + return status; + + address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS; + param = options | 0x20; + status = ath6kl_bmi_reg_write(ar, address, param); + if (status) + return status; + + /* Configure GPIO AR6003 UART */ + param = CONFIG_AR600x_DEBUG_UART_TX_PIN; + status = ath6kl_bmi_write(ar, + ath6kl_get_hi_item_addr(ar, + HI_ITEM(hi_dbg_uart_txpin)), + (u8 *)¶m, 4); + + return status; +} + +static int ath6kl_init(struct net_device *dev) +{ + struct ath6kl *ar = ath6kl_priv(dev); + int status = 0; + s32 timeleft; + + if (!ar) + return -EIO; + + /* Do we need to finish the BMI phase */ + if (ath6kl_bmi_done(ar)) { + status = -EIO; + goto ath6kl_init_done; + } + + /* Indicate that WMI is enabled (although not ready yet) */ + set_bit(WMI_ENABLED, &ar->flag); + ar->wmi = ath6kl_wmi_init((void *) ar); + if (!ar->wmi) { + ath6kl_err("failed to initialize wmi\n"); + status = -EIO; + goto ath6kl_init_done; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi); + + /* + * The reason we have to wait for the target here is that the + * driver layer has to init BMI in order to set the host block + * size. + */ + if (htc_wait_target(ar->htc_target)) { + status = -EIO; + goto err_wmi_cleanup; + } + + if (ath6kl_init_service_ep(ar)) { + status = -EIO; + goto err_cleanup_scatter; + } + + /* setup access class priority mappings */ + ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest */ + ar->ac_stream_pri_map[WMM_AC_BE] = 1; + ar->ac_stream_pri_map[WMM_AC_VI] = 2; + ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */ + + /* give our connected endpoints some buffers */ + ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep); + ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]); + + /* allocate some buffers that handle larger AMSDU frames */ + ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS); + + /* setup credit distribution */ + ath6k_setup_credit_dist(ar->htc_target, &ar->credit_state_info); + + ath6kl_cookie_init(ar); + + /* start HTC */ + status = htc_start(ar->htc_target); + + if (status) { + ath6kl_cookie_cleanup(ar); + goto err_rxbuf_cleanup; + } + + /* Wait for Wmi event to be ready */ + timeleft = wait_event_interruptible_timeout(ar->event_wq, + test_bit(WMI_READY, + &ar->flag), + WMI_TIMEOUT); + + if (ar->version.abi_ver != ATH6KL_ABI_VERSION) { + ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n", + ATH6KL_ABI_VERSION, ar->version.abi_ver); + status = -EIO; + goto err_htc_stop; + } + + if (!timeleft || signal_pending(current)) { + ath6kl_err("wmi is not ready or wait was interrupted\n"); + status = -EIO; + goto err_htc_stop; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__); + + /* communicate the wmi protocol verision to the target */ + if ((ath6kl_set_host_app_area(ar)) != 0) + ath6kl_err("unable to set the host app area\n"); + + ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER | + ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST; + + status = ath6kl_target_config_wlan_params(ar); + if (!status) + goto ath6kl_init_done; + +err_htc_stop: + htc_stop(ar->htc_target); +err_rxbuf_cleanup: + htc_flush_rx_buf(ar->htc_target); + ath6kl_cleanup_amsdu_rxbufs(ar); +err_cleanup_scatter: + ath6kl_hif_cleanup_scatter(ar); +err_wmi_cleanup: + ath6kl_wmi_shutdown(ar->wmi); + clear_bit(WMI_ENABLED, &ar->flag); + ar->wmi = NULL; + +ath6kl_init_done: + return status; +} + +int ath6kl_core_init(struct ath6kl *ar) +{ + int ret = 0; + struct ath6kl_bmi_target_info targ_info; + + ar->ath6kl_wq = create_singlethread_workqueue("ath6kl"); + if (!ar->ath6kl_wq) + return -ENOMEM; + + ret = ath6kl_bmi_init(ar); + if (ret) + goto err_wq; + + ret = ath6kl_bmi_get_target_info(ar, &targ_info); + if (ret) + goto err_bmi_cleanup; + + ar->version.target_ver = le32_to_cpu(targ_info.version); + ar->target_type = le32_to_cpu(targ_info.type); + ar->wdev->wiphy->hw_version = le32_to_cpu(targ_info.version); + + ret = ath6kl_configure_target(ar); + if (ret) + goto err_bmi_cleanup; + + ar->htc_target = htc_create(ar); + + if (!ar->htc_target) { + ret = -ENOMEM; + goto err_bmi_cleanup; + } + + ar->aggr_cntxt = aggr_init(ar->net_dev); + if (!ar->aggr_cntxt) { + ath6kl_err("failed to initialize aggr\n"); + ret = -ENOMEM; + goto err_htc_cleanup; + } + + ret = ath6kl_init_upload(ar); + if (ret) + goto err_htc_cleanup; + + ret = ath6kl_init(ar->net_dev); + if (ret) + goto err_htc_cleanup; + + /* This runs the init function if registered */ + ret = register_netdev(ar->net_dev); + if (ret) { + ath6kl_err("register_netdev failed\n"); + ath6kl_destroy(ar->net_dev, 0); + return ret; + } + + set_bit(NETDEV_REGISTERED, &ar->flag); + + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n", + __func__, ar->net_dev->name, ar->net_dev, ar); + + return ret; + +err_htc_cleanup: + htc_cleanup(ar->htc_target); +err_bmi_cleanup: + ath6kl_bmi_cleanup(ar); +err_wq: + destroy_workqueue(ar->ath6kl_wq); + return ret; +} + +void ath6kl_stop_txrx(struct ath6kl *ar) +{ + struct net_device *ndev = ar->net_dev; + + if (!ndev) + return; + + set_bit(DESTROY_IN_PROGRESS, &ar->flag); + + if (down_interruptible(&ar->sem)) { + ath6kl_err("down_interruptible failed\n"); + return; + } + + if (ar->wlan_pwr_state != WLAN_POWER_STATE_CUT_PWR) + ath6kl_stop_endpoint(ndev, false, true); + + ar->wlan_state = WLAN_DISABLED; +} + +/* + * We need to differentiate between the surprise and planned removal of the + * device because of the following consideration: + * + * - In case of surprise removal, the hcd already frees up the pending + * for the device and hence there is no need to unregister the function + * driver inorder to get these requests. For planned removal, the function + * driver has to explicitly unregister itself to have the hcd return all the + * pending requests before the data structures for the devices are freed up. + * Note that as per the current implementation, the function driver will + * end up releasing all the devices since there is no API to selectively + * release a particular device. + * + * - Certain commands issued to the target can be skipped for surprise + * removal since they will anyway not go through. + */ +void ath6kl_destroy(struct net_device *dev, unsigned int unregister) +{ + struct ath6kl *ar; + + if (!dev || !ath6kl_priv(dev)) { + ath6kl_err("failed to get device structure\n"); + return; + } + + ar = ath6kl_priv(dev); + + destroy_workqueue(ar->ath6kl_wq); + + if (ar->htc_target) + htc_cleanup(ar->htc_target); + + aggr_module_destroy(ar->aggr_cntxt); + + ath6kl_cookie_cleanup(ar); + + ath6kl_cleanup_amsdu_rxbufs(ar); + + ath6kl_bmi_cleanup(ar); + + if (unregister && test_bit(NETDEV_REGISTERED, &ar->flag)) { + unregister_netdev(dev); + clear_bit(NETDEV_REGISTERED, &ar->flag); + } + + free_netdev(dev); + + ath6kl_cfg80211_deinit(ar); +} diff --git a/drivers/net/wireless/ath/ath6kl/main.c b/drivers/net/wireless/ath/ath6kl/main.c new file mode 100644 index 000000000000..f325a23dfff0 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/main.c @@ -0,0 +1,1337 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "core.h" +#include "hif-ops.h" +#include "cfg80211.h" +#include "target.h" +#include "debug.h" + +struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 *node_addr) +{ + struct ath6kl_sta *conn = NULL; + u8 i, max_conn; + + max_conn = (ar->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; + + for (i = 0; i < max_conn; i++) { + if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { + conn = &ar->sta_list[i]; + break; + } + } + + return conn; +} + +struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) +{ + struct ath6kl_sta *conn = NULL; + u8 ctr; + + for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { + if (ar->sta_list[ctr].aid == aid) { + conn = &ar->sta_list[ctr]; + break; + } + } + return conn; +} + +static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie, + u8 ielen, u8 keymgmt, u8 ucipher, u8 auth) +{ + struct ath6kl_sta *sta; + u8 free_slot; + + free_slot = aid - 1; + + sta = &ar->sta_list[free_slot]; + memcpy(sta->mac, mac, ETH_ALEN); + memcpy(sta->wpa_ie, wpaie, ielen); + sta->aid = aid; + sta->keymgmt = keymgmt; + sta->ucipher = ucipher; + sta->auth = auth; + + ar->sta_list_index = ar->sta_list_index | (1 << free_slot); + ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); +} + +static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) +{ + struct ath6kl_sta *sta = &ar->sta_list[i]; + + /* empty the queued pkts in the PS queue if any */ + spin_lock_bh(&sta->psq_lock); + skb_queue_purge(&sta->psq); + spin_unlock_bh(&sta->psq_lock); + + memset(&ar->ap_stats.sta[sta->aid - 1], 0, + sizeof(struct wmi_per_sta_stat)); + memset(sta->mac, 0, ETH_ALEN); + memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); + sta->aid = 0; + sta->sta_flags = 0; + + ar->sta_list_index = ar->sta_list_index & ~(1 << i); + +} + +static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) +{ + u8 i, removed = 0; + + if (is_zero_ether_addr(mac)) + return removed; + + if (is_broadcast_ether_addr(mac)) { + ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); + + for (i = 0; i < AP_MAX_NUM_STA; i++) { + if (!is_zero_ether_addr(ar->sta_list[i].mac)) { + ath6kl_sta_cleanup(ar, i); + removed = 1; + } + } + } else { + for (i = 0; i < AP_MAX_NUM_STA; i++) { + if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { + ath6kl_dbg(ATH6KL_DBG_TRC, + "deleting station %pM aid=%d reason=%d\n", + mac, ar->sta_list[i].aid, reason); + ath6kl_sta_cleanup(ar, i); + removed = 1; + break; + } + } + } + + return removed; +} + +enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) +{ + struct ath6kl *ar = devt; + return ar->ac2ep_map[ac]; +} + +struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) +{ + struct ath6kl_cookie *cookie; + + cookie = ar->cookie_list; + if (cookie != NULL) { + ar->cookie_list = cookie->arc_list_next; + ar->cookie_count--; + } + + return cookie; +} + +void ath6kl_cookie_init(struct ath6kl *ar) +{ + u32 i; + + ar->cookie_list = NULL; + ar->cookie_count = 0; + + memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); + + for (i = 0; i < MAX_COOKIE_NUM; i++) + ath6kl_free_cookie(ar, &ar->cookie_mem[i]); +} + +void ath6kl_cookie_cleanup(struct ath6kl *ar) +{ + ar->cookie_list = NULL; + ar->cookie_count = 0; +} + +void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) +{ + /* Insert first */ + + if (!ar || !cookie) + return; + + cookie->arc_list_next = ar->cookie_list; + ar->cookie_list = cookie; + ar->cookie_count++; +} + +/* set the window address register (using 4-byte register access ). */ +static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr) +{ + int status; + u8 addr_val[4]; + s32 i; + + /* + * Write bytes 1,2,3 of the register to set the upper address bytes, + * the LSB is written last to initiate the access cycle + */ + + for (i = 1; i <= 3; i++) { + /* + * Fill the buffer with the address byte value we want to + * hit 4 times. + */ + memset(addr_val, ((u8 *)&addr)[i], 4); + + /* + * Hit each byte of the register address with a 4-byte + * write operation to the same address, this is a harmless + * operation. + */ + status = hif_read_write_sync(ar, reg_addr + i, addr_val, + 4, HIF_WR_SYNC_BYTE_FIX); + if (status) + break; + } + + if (status) { + ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n", + addr, reg_addr); + return status; + } + + /* + * Write the address register again, this time write the whole + * 4-byte value. The effect here is that the LSB write causes the + * cycle to start, the extra 3 byte write to bytes 1,2,3 has no + * effect since we are writing the same values again + */ + status = hif_read_write_sync(ar, reg_addr, (u8 *)(&addr), + 4, HIF_WR_SYNC_BYTE_INC); + + if (status) { + ath6kl_err("failed to write 0x%x to window reg: 0x%X\n", + addr, reg_addr); + return status; + } + + return 0; +} + +/* + * Read from the ATH6KL through its diagnostic window. No cooperation from + * the Target is required for this. + */ +int ath6kl_read_reg_diag(struct ath6kl *ar, u32 *address, u32 *data) +{ + int status; + + /* set window register to start read cycle */ + status = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, + *address); + + if (status) + return status; + + /* read the data */ + status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data, + sizeof(u32), HIF_RD_SYNC_BYTE_INC); + if (status) { + ath6kl_err("failed to read from window data addr\n"); + return status; + } + + return status; +} + + +/* + * Write to the ATH6KL through its diagnostic window. No cooperation from + * the Target is required for this. + */ +static int ath6kl_write_reg_diag(struct ath6kl *ar, u32 *address, u32 *data) +{ + int status; + + /* set write data */ + status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data, + sizeof(u32), HIF_WR_SYNC_BYTE_INC); + if (status) { + ath6kl_err("failed to write 0x%x to window data addr\n", *data); + return status; + } + + /* set window register, which starts the write cycle */ + return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS, + *address); +} + +int ath6kl_access_datadiag(struct ath6kl *ar, u32 address, + u8 *data, u32 length, bool read) +{ + u32 count; + int status = 0; + + for (count = 0; count < length; count += 4, address += 4) { + if (read) { + status = ath6kl_read_reg_diag(ar, &address, + (u32 *) &data[count]); + if (status) + break; + } else { + status = ath6kl_write_reg_diag(ar, &address, + (u32 *) &data[count]); + if (status) + break; + } + } + + return status; +} + +static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, + bool wait_fot_compltn, bool cold_reset) +{ + int status = 0; + u32 address; + u32 data; + + if (target_type != TARGET_TYPE_AR6003) + return; + + data = cold_reset ? RESET_CONTROL_COLD_RST : RESET_CONTROL_MBOX_RST; + + address = RTC_BASE_ADDRESS; + status = ath6kl_write_reg_diag(ar, &address, &data); + + if (status) + ath6kl_err("failed to reset target\n"); +} + +void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, + bool get_dbglogs) +{ + struct ath6kl *ar = ath6kl_priv(dev); + static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + bool discon_issued; + + netif_stop_queue(dev); + + /* disable the target and the interrupts associated with it */ + if (test_bit(WMI_READY, &ar->flag)) { + discon_issued = (test_bit(CONNECTED, &ar->flag) || + test_bit(CONNECT_PEND, &ar->flag)); + ath6kl_disconnect(ar); + if (!keep_profile) + ath6kl_init_profile_info(ar); + + del_timer(&ar->disconnect_timer); + + clear_bit(WMI_READY, &ar->flag); + ath6kl_wmi_shutdown(ar->wmi); + clear_bit(WMI_ENABLED, &ar->flag); + ar->wmi = NULL; + + /* + * After wmi_shudown all WMI events will be dropped. We + * need to cleanup the buffers allocated in AP mode and + * give disconnect notification to stack, which usually + * happens in the disconnect_event. Simulate the disconnect + * event by calling the function directly. Sometimes + * disconnect_event will be received when the debug logs + * are collected. + */ + if (discon_issued) + ath6kl_disconnect_event(ar, DISCONNECT_CMD, + (ar->nw_type & AP_NETWORK) ? + bcast_mac : ar->bssid, + 0, NULL, 0); + + ar->user_key_ctrl = 0; + + } else { + ath6kl_dbg(ATH6KL_DBG_TRC, + "%s: wmi is not ready 0x%p 0x%p\n", + __func__, ar, ar->wmi); + + /* Shut down WMI if we have started it */ + if (test_bit(WMI_ENABLED, &ar->flag)) { + ath6kl_dbg(ATH6KL_DBG_TRC, + "%s: shut down wmi\n", __func__); + ath6kl_wmi_shutdown(ar->wmi); + clear_bit(WMI_ENABLED, &ar->flag); + ar->wmi = NULL; + } + } + + if (ar->htc_target) { + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); + htc_stop(ar->htc_target); + } + + /* + * Try to reset the device if we can. The driver may have been + * configure NOT to reset the target during a debug session. + */ + ath6kl_dbg(ATH6KL_DBG_TRC, + "attempting to reset target on instance destroy\n"); + ath6kl_reset_device(ar, ar->target_type, true, true); +} + +static void ath6kl_install_static_wep_keys(struct ath6kl *ar) +{ + u8 index; + u8 keyusage; + + for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { + if (ar->wep_key_list[index].key_len) { + keyusage = GROUP_USAGE; + if (index == ar->def_txkey_index) + keyusage |= TX_USAGE; + + ath6kl_wmi_addkey_cmd(ar->wmi, + index, + WEP_CRYPT, + keyusage, + ar->wep_key_list[index].key_len, + NULL, + ar->wep_key_list[index].key, + KEY_OP_INIT_VAL, NULL, + NO_SYNC_WMIFLAG); + } + } +} + +static void ath6kl_connect_ap_mode(struct ath6kl *ar, u16 channel, u8 *bssid, + u16 listen_int, u16 beacon_int, + u8 assoc_resp_len, u8 *assoc_info) +{ + struct net_device *dev = ar->net_dev; + struct station_info sinfo; + struct ath6kl_req_key *ik; + enum crypto_type keyType = NONE_CRYPT; + + if (memcmp(dev->dev_addr, bssid, ETH_ALEN) == 0) { + ik = &ar->ap_mode_bkey; + + switch (ar->auth_mode) { + case NONE_AUTH: + if (ar->prwise_crypto == WEP_CRYPT) + ath6kl_install_static_wep_keys(ar); + break; + case WPA_PSK_AUTH: + case WPA2_PSK_AUTH: + case (WPA_PSK_AUTH|WPA2_PSK_AUTH): + switch (ik->ik_type) { + case ATH6KL_CIPHER_TKIP: + keyType = TKIP_CRYPT; + break; + case ATH6KL_CIPHER_AES_CCM: + keyType = AES_CRYPT; + break; + default: + goto skip_key; + } + ath6kl_wmi_addkey_cmd(ar->wmi, ik->ik_keyix, keyType, + GROUP_USAGE, ik->ik_keylen, + (u8 *)&ik->ik_keyrsc, + ik->ik_keydata, + KEY_OP_INIT_VAL, ik->ik_macaddr, + SYNC_BOTH_WMIFLAG); + break; + } +skip_key: + set_bit(CONNECTED, &ar->flag); + return; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", + bssid, channel); + + ath6kl_add_new_sta(ar, bssid, channel, assoc_info, assoc_resp_len, + listen_int & 0xFF, beacon_int, + (listen_int >> 8) & 0xFF); + + /* send event to application */ + memset(&sinfo, 0, sizeof(sinfo)); + + /* TODO: sinfo.generation */ + /* TODO: need to deliver (Re)AssocReq IEs somehow.. change in + * cfg80211 needed, e.g., by adding those into sinfo + */ + cfg80211_new_sta(ar->net_dev, bssid, &sinfo, GFP_KERNEL); + + netif_wake_queue(ar->net_dev); + + return; +} + +/* Functions for Tx credit handling */ +void ath6k_credit_init(struct htc_credit_state_info *cred_info, + struct list_head *ep_list, + int tot_credits) +{ + struct htc_endpoint_credit_dist *cur_ep_dist; + int count; + + cred_info->cur_free_credits = tot_credits; + cred_info->total_avail_credits = tot_credits; + + list_for_each_entry(cur_ep_dist, ep_list, list) { + if (cur_ep_dist->endpoint == ENDPOINT_0) + continue; + + cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; + + if (tot_credits > 4) + if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || + (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { + ath6kl_deposit_credit_to_ep(cred_info, + cur_ep_dist, + cur_ep_dist->cred_min); + cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; + } + + if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { + ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, + cur_ep_dist->cred_min); + /* + * Control service is always marked active, it + * never goes inactive EVER. + */ + cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; + } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) + /* this is the lowest priority data endpoint */ + cred_info->lowestpri_ep_dist = cur_ep_dist->list; + + /* + * Streams have to be created (explicit | implicit) for all + * kinds of traffic. BE endpoints are also inactive in the + * beginning. When BE traffic starts it creates implicit + * streams that redistributes credits. + * + * Note: all other endpoints have minimums set but are + * initially given NO credits. credits will be distributed + * as traffic activity demands + */ + } + + WARN_ON(cred_info->cur_free_credits <= 0); + + list_for_each_entry(cur_ep_dist, ep_list, list) { + if (cur_ep_dist->endpoint == ENDPOINT_0) + continue; + + if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) + cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; + else { + /* + * For the remaining data endpoints, we assume that + * each cred_per_msg are the same. We use a simple + * calculation here, we take the remaining credits + * and determine how many max messages this can + * cover and then set each endpoint's normal value + * equal to 3/4 this amount. + */ + count = (cred_info->cur_free_credits / + cur_ep_dist->cred_per_msg) + * cur_ep_dist->cred_per_msg; + count = (count * 3) >> 2; + count = max(count, cur_ep_dist->cred_per_msg); + cur_ep_dist->cred_norm = count; + + } + } +} + +/* initialize and setup credit distribution */ +int ath6k_setup_credit_dist(void *htc_handle, + struct htc_credit_state_info *cred_info) +{ + u16 servicepriority[5]; + + memset(cred_info, 0, sizeof(struct htc_credit_state_info)); + + servicepriority[0] = WMI_CONTROL_SVC; /* highest */ + servicepriority[1] = WMI_DATA_VO_SVC; + servicepriority[2] = WMI_DATA_VI_SVC; + servicepriority[3] = WMI_DATA_BE_SVC; + servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ + + /* set priority list */ + htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); + + return 0; +} + +/* reduce an ep's credits back to a set limit */ +static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, + struct htc_endpoint_credit_dist *ep_dist, + int limit) +{ + int credits; + + ep_dist->cred_assngd = limit; + + if (ep_dist->credits <= limit) + return; + + credits = ep_dist->credits - limit; + ep_dist->credits -= credits; + cred_info->cur_free_credits += credits; +} + +static void ath6k_credit_update(struct htc_credit_state_info *cred_info, + struct list_head *epdist_list) +{ + struct htc_endpoint_credit_dist *cur_dist_list; + + list_for_each_entry(cur_dist_list, epdist_list, list) { + if (cur_dist_list->endpoint == ENDPOINT_0) + continue; + + if (cur_dist_list->cred_to_dist > 0) { + cur_dist_list->credits += + cur_dist_list->cred_to_dist; + cur_dist_list->cred_to_dist = 0; + if (cur_dist_list->credits > + cur_dist_list->cred_assngd) + ath6k_reduce_credits(cred_info, + cur_dist_list, + cur_dist_list->cred_assngd); + + if (cur_dist_list->credits > + cur_dist_list->cred_norm) + ath6k_reduce_credits(cred_info, cur_dist_list, + cur_dist_list->cred_norm); + + if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { + if (cur_dist_list->txq_depth == 0) + ath6k_reduce_credits(cred_info, + cur_dist_list, 0); + } + } + } +} + +/* + * HTC has an endpoint that needs credits, ep_dist is the endpoint in + * question. + */ +void ath6k_seek_credits(struct htc_credit_state_info *cred_info, + struct htc_endpoint_credit_dist *ep_dist) +{ + struct htc_endpoint_credit_dist *curdist_list; + int credits = 0; + int need; + + if (ep_dist->svc_id == WMI_CONTROL_SVC) + goto out; + + if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || + (ep_dist->svc_id == WMI_DATA_VO_SVC)) + if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) + goto out; + + /* + * For all other services, we follow a simple algorithm of: + * + * 1. checking the free pool for credits + * 2. checking lower priority endpoints for credits to take + */ + + credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); + + if (credits >= ep_dist->seek_cred) + goto out; + + /* + * We don't have enough in the free pool, try taking away from + * lower priority services The rule for taking away credits: + * + * 1. Only take from lower priority endpoints + * 2. Only take what is allocated above the minimum (never + * starve an endpoint completely) + * 3. Only take what you need. + */ + + list_for_each_entry_reverse(curdist_list, + &cred_info->lowestpri_ep_dist, + list) { + if (curdist_list == ep_dist) + break; + + need = ep_dist->seek_cred - cred_info->cur_free_credits; + + if ((curdist_list->cred_assngd - need) >= + curdist_list->cred_min) { + /* + * The current one has been allocated more than + * it's minimum and it has enough credits assigned + * above it's minimum to fulfill our need try to + * take away just enough to fulfill our need. + */ + ath6k_reduce_credits(cred_info, curdist_list, + curdist_list->cred_assngd - need); + + if (cred_info->cur_free_credits >= + ep_dist->seek_cred) + break; + } + + if (curdist_list->endpoint == ENDPOINT_0) + break; + } + + credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); + +out: + /* did we find some credits? */ + if (credits) + ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); + + ep_dist->seek_cred = 0; +} + +/* redistribute credits based on activity change */ +static void ath6k_redistribute_credits(struct htc_credit_state_info *info, + struct list_head *ep_dist_list) +{ + struct htc_endpoint_credit_dist *curdist_list; + + list_for_each_entry(curdist_list, ep_dist_list, list) { + if (curdist_list->endpoint == ENDPOINT_0) + continue; + + if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || + (curdist_list->svc_id == WMI_DATA_BE_SVC)) + curdist_list->dist_flags |= HTC_EP_ACTIVE; + + if ((curdist_list->svc_id != WMI_CONTROL_SVC) && + !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { + if (curdist_list->txq_depth == 0) + ath6k_reduce_credits(info, + curdist_list, 0); + else + ath6k_reduce_credits(info, + curdist_list, + curdist_list->cred_min); + } + } +} + +/* + * + * This function is invoked whenever endpoints require credit + * distributions. A lock is held while this function is invoked, this + * function shall NOT block. The ep_dist_list is a list of distribution + * structures in prioritized order as defined by the call to the + * htc_set_credit_dist() api. + */ +void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, + struct list_head *ep_dist_list, + enum htc_credit_dist_reason reason) +{ + switch (reason) { + case HTC_CREDIT_DIST_SEND_COMPLETE: + ath6k_credit_update(cred_info, ep_dist_list); + break; + case HTC_CREDIT_DIST_ACTIVITY_CHANGE: + ath6k_redistribute_credits(cred_info, ep_dist_list); + break; + default: + break; + } + + WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); + WARN_ON(cred_info->cur_free_credits < 0); +} + +void disconnect_timer_handler(unsigned long ptr) +{ + struct net_device *dev = (struct net_device *)ptr; + struct ath6kl *ar = ath6kl_priv(dev); + + ath6kl_init_profile_info(ar); + ath6kl_disconnect(ar); +} + +void ath6kl_disconnect(struct ath6kl *ar) +{ + if (test_bit(CONNECTED, &ar->flag) || + test_bit(CONNECT_PEND, &ar->flag)) { + ath6kl_wmi_disconnect_cmd(ar->wmi); + /* + * Disconnect command is issued, clear the connect pending + * flag. The connected flag will be cleared in + * disconnect event notification. + */ + clear_bit(CONNECT_PEND, &ar->flag); + } +} + +/* WMI Event handlers */ + +static const char *get_hw_id_string(u32 id) +{ + switch (id) { + case AR6003_REV1_VERSION: + return "1.0"; + case AR6003_REV2_VERSION: + return "2.0"; + case AR6003_REV3_VERSION: + return "2.1.1"; + default: + return "unknown"; + } +} + +void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) +{ + struct ath6kl *ar = devt; + struct net_device *dev = ar->net_dev; + + memcpy(dev->dev_addr, datap, ETH_ALEN); + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", + __func__, dev->dev_addr); + + ar->version.wlan_ver = sw_ver; + ar->version.abi_ver = abi_ver; + + snprintf(ar->wdev->wiphy->fw_version, + sizeof(ar->wdev->wiphy->fw_version), + "%u.%u.%u.%u", + (ar->version.wlan_ver & 0xf0000000) >> 28, + (ar->version.wlan_ver & 0x0f000000) >> 24, + (ar->version.wlan_ver & 0x00ff0000) >> 16, + (ar->version.wlan_ver & 0x0000ffff)); + + /* indicate to the waiting thread that the ready event was received */ + set_bit(WMI_READY, &ar->flag); + wake_up(&ar->event_wq); + + ath6kl_info("hw %s fw %s\n", + get_hw_id_string(ar->wdev->wiphy->hw_version), + ar->wdev->wiphy->fw_version); +} + +void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) +{ + ath6kl_cfg80211_scan_complete_event(ar, status); + + if (!ar->usr_bss_filter) + ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); + + ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); +} + +void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, + u16 listen_int, u16 beacon_int, + enum network_type net_type, u8 beacon_ie_len, + u8 assoc_req_len, u8 assoc_resp_len, + u8 *assoc_info) +{ + unsigned long flags; + + if (ar->nw_type == AP_NETWORK) { + ath6kl_connect_ap_mode(ar, channel, bssid, listen_int, + beacon_int, assoc_resp_len, + assoc_info); + return; + } + + ath6kl_cfg80211_connect_event(ar, channel, bssid, + listen_int, beacon_int, + net_type, beacon_ie_len, + assoc_req_len, assoc_resp_len, + assoc_info); + + memcpy(ar->bssid, bssid, sizeof(ar->bssid)); + ar->bss_ch = channel; + + if ((ar->nw_type == INFRA_NETWORK)) + ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, + ar->listen_intvl_b); + + netif_wake_queue(ar->net_dev); + + /* Update connect & link status atomically */ + spin_lock_irqsave(&ar->lock, flags); + set_bit(CONNECTED, &ar->flag); + clear_bit(CONNECT_PEND, &ar->flag); + netif_carrier_on(ar->net_dev); + spin_unlock_irqrestore(&ar->lock, flags); + + aggr_reset_state(ar->aggr_cntxt); + ar->reconnect_flag = 0; + + if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { + memset(ar->node_map, 0, sizeof(ar->node_map)); + ar->node_num = 0; + ar->next_ep_id = ENDPOINT_2; + } + + if (!ar->usr_bss_filter) + ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); +} + +void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) +{ + struct ath6kl_sta *sta; + u8 tsc[6]; + /* + * For AP case, keyid will have aid of STA which sent pkt with + * MIC error. Use this aid to get MAC & send it to hostapd. + */ + if (ar->nw_type == AP_NETWORK) { + sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); + if (!sta) + return; + + ath6kl_dbg(ATH6KL_DBG_TRC, + "ap tkip mic error received from aid=%d\n", keyid); + + memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ + cfg80211_michael_mic_failure(ar->net_dev, sta->mac, + NL80211_KEYTYPE_PAIRWISE, keyid, + tsc, GFP_KERNEL); + } else + ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); + +} + +static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) +{ + struct wmi_target_stats *tgt_stats = + (struct wmi_target_stats *) ptr; + struct target_stats *stats = &ar->target_stats; + struct tkip_ccmp_stats *ccmp_stats; + struct bss *conn_bss = NULL; + struct cserv_stats *c_stats; + u8 ac; + + if (len < sizeof(*tgt_stats)) + return; + + /* update the RSSI of the connected bss */ + if (test_bit(CONNECTED, &ar->flag)) { + conn_bss = ath6kl_wmi_find_node(ar->wmi, ar->bssid); + if (conn_bss) { + c_stats = &tgt_stats->cserv_stats; + conn_bss->ni_rssi = + a_sle16_to_cpu(c_stats->cs_ave_beacon_rssi); + conn_bss->ni_snr = + tgt_stats->cserv_stats.cs_ave_beacon_snr; + ath6kl_wmi_node_return(ar->wmi, conn_bss); + } + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); + + stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); + stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); + stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); + stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); + stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); + stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); + stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); + stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); + stats->tx_rts_success_cnt += + le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); + + for (ac = 0; ac < WMM_NUM_AC; ac++) + stats->tx_pkt_per_ac[ac] += + le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); + + stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); + stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); + stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); + stats->tx_mult_retry_cnt += + le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); + stats->tx_rts_fail_cnt += + le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); + stats->tx_ucast_rate = + ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); + + stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); + stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); + stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); + stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); + stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); + stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); + stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); + stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); + stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); + stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); + stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); + stats->rx_key_cache_miss += + le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); + stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); + stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); + stats->rx_ucast_rate = + ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); + + ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; + + stats->tkip_local_mic_fail += + le32_to_cpu(ccmp_stats->tkip_local_mic_fail); + stats->tkip_cnter_measures_invoked += + le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); + stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); + + stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); + stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); + + stats->pwr_save_fail_cnt += + le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); + stats->noise_floor_calib = + a_sle32_to_cpu(tgt_stats->noise_floor_calib); + + stats->cs_bmiss_cnt += + le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); + stats->cs_low_rssi_cnt += + le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); + stats->cs_connect_cnt += + le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); + stats->cs_discon_cnt += + le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); + + stats->cs_ave_beacon_rssi = + a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); + + stats->cs_last_roam_msec = + tgt_stats->cserv_stats.cs_last_roam_msec; + stats->cs_snr = tgt_stats->cserv_stats.cs_snr; + stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); + + stats->lq_val = le32_to_cpu(tgt_stats->lq_val); + + stats->wow_pkt_dropped += + le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); + stats->wow_host_pkt_wakeups += + tgt_stats->wow_stats.wow_host_pkt_wakeups; + stats->wow_host_evt_wakeups += + tgt_stats->wow_stats.wow_host_evt_wakeups; + stats->wow_evt_discarded += + le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); + + if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { + clear_bit(STATS_UPDATE_PEND, &ar->flag); + wake_up(&ar->event_wq); + } +} + +static void ath6kl_add_le32(__le32 *var, __le32 val) +{ + *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); +} + +void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) +{ + struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; + struct wmi_ap_mode_stat *ap = &ar->ap_stats; + struct wmi_per_sta_stat *st_ap, *st_p; + u8 ac; + + if (ar->nw_type == AP_NETWORK) { + if (len < sizeof(*p)) + return; + + for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { + st_ap = &ap->sta[ac]; + st_p = &p->sta[ac]; + + ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); + ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); + ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); + ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); + ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); + ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); + ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); + ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); + } + + } else { + ath6kl_update_target_stats(ar, ptr, len); + } +} + +void ath6kl_wakeup_event(void *dev) +{ + struct ath6kl *ar = (struct ath6kl *) dev; + + wake_up(&ar->event_wq); +} + +void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) +{ + struct ath6kl *ar = (struct ath6kl *) devt; + + ar->tx_pwr = tx_pwr; + wake_up(&ar->event_wq); +} + +void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) +{ + struct ath6kl_sta *conn; + struct sk_buff *skb; + bool psq_empty = false; + + conn = ath6kl_find_sta_by_aid(ar, aid); + + if (!conn) + return; + /* + * Send out a packet queued on ps queue. When the ps queue + * becomes empty update the PVB for this station. + */ + spin_lock_bh(&conn->psq_lock); + psq_empty = skb_queue_empty(&conn->psq); + spin_unlock_bh(&conn->psq_lock); + + if (psq_empty) + /* TODO: Send out a NULL data frame */ + return; + + spin_lock_bh(&conn->psq_lock); + skb = skb_dequeue(&conn->psq); + spin_unlock_bh(&conn->psq_lock); + + conn->sta_flags |= STA_PS_POLLED; + ath6kl_data_tx(skb, ar->net_dev); + conn->sta_flags &= ~STA_PS_POLLED; + + spin_lock_bh(&conn->psq_lock); + psq_empty = skb_queue_empty(&conn->psq); + spin_unlock_bh(&conn->psq_lock); + + if (psq_empty) + ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); +} + +void ath6kl_dtimexpiry_event(struct ath6kl *ar) +{ + bool mcastq_empty = false; + struct sk_buff *skb; + + /* + * If there are no associated STAs, ignore the DTIM expiry event. + * There can be potential race conditions where the last associated + * STA may disconnect & before the host could clear the 'Indicate + * DTIM' request to the firmware, the firmware would have just + * indicated a DTIM expiry event. The race is between 'clear DTIM + * expiry cmd' going from the host to the firmware & the DTIM + * expiry event happening from the firmware to the host. + */ + if (!ar->sta_list_index) + return; + + spin_lock_bh(&ar->mcastpsq_lock); + mcastq_empty = skb_queue_empty(&ar->mcastpsq); + spin_unlock_bh(&ar->mcastpsq_lock); + + if (mcastq_empty) + return; + + /* set the STA flag to dtim_expired for the frame to go out */ + set_bit(DTIM_EXPIRED, &ar->flag); + + spin_lock_bh(&ar->mcastpsq_lock); + while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { + spin_unlock_bh(&ar->mcastpsq_lock); + + ath6kl_data_tx(skb, ar->net_dev); + + spin_lock_bh(&ar->mcastpsq_lock); + } + spin_unlock_bh(&ar->mcastpsq_lock); + + clear_bit(DTIM_EXPIRED, &ar->flag); + + /* clear the LSB of the BitMapCtl field of the TIM IE */ + ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); +} + +void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, + u8 assoc_resp_len, u8 *assoc_info, + u16 prot_reason_status) +{ + struct bss *wmi_ssid_node = NULL; + unsigned long flags; + + if (ar->nw_type == AP_NETWORK) { + if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) + return; + + /* if no more associated STAs, empty the mcast PS q */ + if (ar->sta_list_index == 0) { + spin_lock_bh(&ar->mcastpsq_lock); + skb_queue_purge(&ar->mcastpsq); + spin_unlock_bh(&ar->mcastpsq_lock); + + /* clear the LSB of the TIM IE's BitMapCtl field */ + if (test_bit(WMI_READY, &ar->flag)) + ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); + } + + if (!is_broadcast_ether_addr(bssid)) { + /* send event to application */ + cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); + } + + clear_bit(CONNECTED, &ar->flag); + return; + } + + ath6kl_cfg80211_disconnect_event(ar, reason, bssid, + assoc_resp_len, assoc_info, + prot_reason_status); + + aggr_reset_state(ar->aggr_cntxt); + + del_timer(&ar->disconnect_timer); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, + "disconnect reason is %d\n", reason); + + /* + * If the event is due to disconnect cmd from the host, only they + * the target would stop trying to connect. Under any other + * condition, target would keep trying to connect. + */ + if (reason == DISCONNECT_CMD) { + if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) + ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); + } else { + set_bit(CONNECT_PEND, &ar->flag); + if (((reason == ASSOC_FAILED) && + (prot_reason_status == 0x11)) || + ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) + && (ar->reconnect_flag == 1))) { + set_bit(CONNECTED, &ar->flag); + return; + } + } + + if ((reason == NO_NETWORK_AVAIL) && test_bit(WMI_READY, &ar->flag)) { + ath6kl_wmi_node_free(ar->wmi, bssid); + + /* + * In case any other same SSID nodes are present remove it, + * since those nodes also not available now. + */ + do { + /* + * Find the nodes based on SSID and remove it + * + * Note: This case will not work out for + * Hidden-SSID + */ + wmi_ssid_node = ath6kl_wmi_find_ssid_node(ar->wmi, + ar->ssid, + ar->ssid_len, + false, + true); + + if (wmi_ssid_node) + ath6kl_wmi_node_free(ar->wmi, + wmi_ssid_node->ni_macaddr); + + } while (wmi_ssid_node); + } + + /* update connect & link status atomically */ + spin_lock_irqsave(&ar->lock, flags); + clear_bit(CONNECTED, &ar->flag); + netif_carrier_off(ar->net_dev); + spin_unlock_irqrestore(&ar->lock, flags); + + if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) + ar->reconnect_flag = 0; + + if (reason != CSERV_DISCONNECT) + ar->user_key_ctrl = 0; + + netif_stop_queue(ar->net_dev); + memset(ar->bssid, 0, sizeof(ar->bssid)); + ar->bss_ch = 0; + + ath6kl_tx_data_cleanup(ar); +} + +static int ath6kl_open(struct net_device *dev) +{ + struct ath6kl *ar = ath6kl_priv(dev); + unsigned long flags; + + spin_lock_irqsave(&ar->lock, flags); + + ar->wlan_state = WLAN_ENABLED; + + if (test_bit(CONNECTED, &ar->flag)) { + netif_carrier_on(dev); + netif_wake_queue(dev); + } else + netif_carrier_off(dev); + + spin_unlock_irqrestore(&ar->lock, flags); + + return 0; +} + +static int ath6kl_close(struct net_device *dev) +{ + struct ath6kl *ar = ath6kl_priv(dev); + + netif_stop_queue(dev); + + ath6kl_disconnect(ar); + + if (test_bit(WMI_READY, &ar->flag)) { + if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, + 0, 0, 0)) + return -EIO; + + ar->wlan_state = WLAN_DISABLED; + } + + ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); + + return 0; +} + +static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) +{ + struct ath6kl *ar = ath6kl_priv(dev); + + return &ar->net_stats; +} + +static struct net_device_ops ath6kl_netdev_ops = { + .ndo_open = ath6kl_open, + .ndo_stop = ath6kl_close, + .ndo_start_xmit = ath6kl_data_tx, + .ndo_get_stats = ath6kl_get_stats, +}; + +void init_netdev(struct net_device *dev) +{ + dev->netdev_ops = &ath6kl_netdev_ops; + dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; + + dev->needed_headroom = ETH_HLEN; + dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + + sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH + + WMI_MAX_TX_META_SZ; + + return; +} diff --git a/drivers/net/wireless/ath/ath6kl/node.c b/drivers/net/wireless/ath/ath6kl/node.c new file mode 100644 index 000000000000..b0f9ba2e463c --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/node.c @@ -0,0 +1,238 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "htc.h" +#include "wmi.h" +#include "debug.h" + +struct bss *wlan_node_alloc(int wh_size) +{ + struct bss *ni; + + ni = kzalloc(sizeof(struct bss), GFP_ATOMIC); + + if ((ni != NULL) && wh_size) { + ni->ni_buf = kmalloc(wh_size, GFP_ATOMIC); + if (ni->ni_buf == NULL) { + kfree(ni); + return NULL; + } + } + + return ni; +} + +void wlan_node_free(struct bss *ni) +{ + kfree(ni->ni_buf); + kfree(ni); +} + +void wlan_setup_node(struct ath6kl_node_table *nt, struct bss *ni, + const u8 *mac_addr) +{ + int hash; + + memcpy(ni->ni_macaddr, mac_addr, ETH_ALEN); + hash = ATH6KL_NODE_HASH(mac_addr); + ni->ni_refcnt = 1; + + ni->ni_tstamp = jiffies_to_msecs(jiffies); + ni->ni_actcnt = WLAN_NODE_INACT_CNT; + + spin_lock_bh(&nt->nt_nodelock); + + /* insert at the end of the node list */ + ni->ni_list_next = NULL; + ni->ni_list_prev = nt->nt_node_last; + if (nt->nt_node_last != NULL) + nt->nt_node_last->ni_list_next = ni; + + nt->nt_node_last = ni; + if (nt->nt_node_first == NULL) + nt->nt_node_first = ni; + + /* insert into the hash list */ + ni->ni_hash_next = nt->nt_hash[hash]; + if (ni->ni_hash_next != NULL) + nt->nt_hash[hash]->ni_hash_prev = ni; + + ni->ni_hash_prev = NULL; + nt->nt_hash[hash] = ni; + + spin_unlock_bh(&nt->nt_nodelock); +} + +struct bss *wlan_find_node(struct ath6kl_node_table *nt, + const u8 *mac_addr) +{ + struct bss *ni, *found_ni = NULL; + int hash; + + spin_lock_bh(&nt->nt_nodelock); + + hash = ATH6KL_NODE_HASH(mac_addr); + for (ni = nt->nt_hash[hash]; ni; ni = ni->ni_hash_next) { + if (memcmp(ni->ni_macaddr, mac_addr, ETH_ALEN) == 0) { + ni->ni_refcnt++; + found_ni = ni; + break; + } + } + + spin_unlock_bh(&nt->nt_nodelock); + + return found_ni; +} + +void wlan_node_reclaim(struct ath6kl_node_table *nt, struct bss *ni) +{ + int hash; + + spin_lock_bh(&nt->nt_nodelock); + + if (ni->ni_list_prev == NULL) + /* fix list head */ + nt->nt_node_first = ni->ni_list_next; + else + ni->ni_list_prev->ni_list_next = ni->ni_list_next; + + if (ni->ni_list_next == NULL) + /* fix list tail */ + nt->nt_node_last = ni->ni_list_prev; + else + ni->ni_list_next->ni_list_prev = ni->ni_list_prev; + + if (ni->ni_hash_prev == NULL) { + /* first in list so fix the list head */ + hash = ATH6KL_NODE_HASH(ni->ni_macaddr); + nt->nt_hash[hash] = ni->ni_hash_next; + } else { + ni->ni_hash_prev->ni_hash_next = ni->ni_hash_next; + } + + if (ni->ni_hash_next != NULL) + ni->ni_hash_next->ni_hash_prev = ni->ni_hash_prev; + + wlan_node_free(ni); + + spin_unlock_bh(&nt->nt_nodelock); +} + +static void wlan_node_dec_free(struct bss *ni) +{ + if ((ni->ni_refcnt--) == 1) + wlan_node_free(ni); +} + +void wlan_free_allnodes(struct ath6kl_node_table *nt) +{ + struct bss *ni; + + while ((ni = nt->nt_node_first) != NULL) + wlan_node_reclaim(nt, ni); +} + +void wlan_iterate_nodes(struct ath6kl_node_table *nt, + void (*f) (void *arg, struct bss *), void *arg) +{ + struct bss *ni; + + spin_lock_bh(&nt->nt_nodelock); + for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) { + ni->ni_refcnt++; + (*f) (arg, ni); + wlan_node_dec_free(ni); + } + spin_unlock_bh(&nt->nt_nodelock); +} + +void wlan_node_table_init(void *wmi, struct ath6kl_node_table *nt) +{ + ath6kl_dbg(ATH6KL_DBG_WLAN_NODE, "node table = 0x%lx\n", + (unsigned long)nt); + + memset(nt, 0, sizeof(struct ath6kl_node_table)); + + spin_lock_init(&nt->nt_nodelock); + + nt->nt_wmi = wmi; + nt->nt_node_age = WLAN_NODE_INACT_TIMEOUT_MSEC; +} + +void wlan_refresh_inactive_nodes(struct ath6kl_node_table *nt) +{ + struct bss *bss; + u8 my_bssid[ETH_ALEN]; + u32 now; + + ath6kl_wmi_get_current_bssid(nt->nt_wmi, my_bssid); + + now = jiffies_to_msecs(jiffies); + bss = nt->nt_node_first; + while (bss != NULL) { + /* refresh all nodes except the current bss */ + if (memcmp(my_bssid, bss->ni_macaddr, sizeof(my_bssid)) != 0) { + if (((now - bss->ni_tstamp) > nt->nt_node_age) + || --bss->ni_actcnt == 0) { + wlan_node_reclaim(nt, bss); + } + } + bss = bss->ni_list_next; + } +} + +void wlan_node_table_cleanup(struct ath6kl_node_table *nt) +{ + wlan_free_allnodes(nt); +} + +struct bss *wlan_find_ssid_node(struct ath6kl_node_table *nt, u8 * ssid, + u32 ssid_len, bool is_wpa2, bool match_ssid) +{ + struct bss *ni, *found_ni = NULL; + u8 *ie_ssid; + + spin_lock_bh(&nt->nt_nodelock); + + for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) { + + ie_ssid = ni->ni_cie.ie_ssid; + + if ((ie_ssid[1] <= IEEE80211_MAX_SSID_LEN) && + (memcmp(ssid, &ie_ssid[2], ssid_len) == 0)) { + + if (match_ssid || + (is_wpa2 && ni->ni_cie.ie_rsn != NULL) || + (!is_wpa2 && ni->ni_cie.ie_wpa != NULL)) { + ni->ni_refcnt++; + found_ni = ni; + break; + } + } + } + + spin_unlock_bh(&nt->nt_nodelock); + + return found_ni; +} + +void wlan_node_return(struct ath6kl_node_table *nt, struct bss *ni) +{ + spin_lock_bh(&nt->nt_nodelock); + wlan_node_dec_free(ni); + spin_unlock_bh(&nt->nt_nodelock); +} diff --git a/drivers/net/wireless/ath/ath6kl/sdio.c b/drivers/net/wireless/ath/ath6kl/sdio.c new file mode 100644 index 000000000000..b38732aaf41a --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/sdio.c @@ -0,0 +1,853 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/mmc/card.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/host.h> +#include <linux/mmc/sdio_func.h> +#include <linux/mmc/sdio_ids.h> +#include <linux/mmc/sdio.h> +#include <linux/mmc/sd.h> +#include "htc_hif.h" +#include "hif-ops.h" +#include "target.h" +#include "debug.h" + +struct ath6kl_sdio { + struct sdio_func *func; + + spinlock_t lock; + + /* free list */ + struct list_head bus_req_freeq; + + /* available bus requests */ + struct bus_request bus_req[BUS_REQUEST_MAX_NUM]; + + struct ath6kl *ar; + u8 *dma_buffer; + + /* scatter request list head */ + struct list_head scat_req; + + spinlock_t scat_lock; + bool is_disabled; + atomic_t irq_handling; + const struct sdio_device_id *id; + struct work_struct wr_async_work; + struct list_head wr_asyncq; + spinlock_t wr_async_lock; +}; + +#define CMD53_ARG_READ 0 +#define CMD53_ARG_WRITE 1 +#define CMD53_ARG_BLOCK_BASIS 1 +#define CMD53_ARG_FIXED_ADDRESS 0 +#define CMD53_ARG_INCR_ADDRESS 1 + +static inline struct ath6kl_sdio *ath6kl_sdio_priv(struct ath6kl *ar) +{ + return ar->hif_priv; +} + +/* + * Macro to check if DMA buffer is WORD-aligned and DMA-able. + * Most host controllers assume the buffer is DMA'able and will + * bug-check otherwise (i.e. buffers on the stack). virt_addr_valid + * check fails on stack memory. + */ +static inline bool buf_needs_bounce(u8 *buf) +{ + return ((unsigned long) buf & 0x3) || !virt_addr_valid(buf); +} + +static void ath6kl_sdio_set_mbox_info(struct ath6kl *ar) +{ + struct ath6kl_mbox_info *mbox_info = &ar->mbox_info; + + /* EP1 has an extended range */ + mbox_info->htc_addr = HIF_MBOX_BASE_ADDR; + mbox_info->htc_ext_addr = HIF_MBOX0_EXT_BASE_ADDR; + mbox_info->htc_ext_sz = HIF_MBOX0_EXT_WIDTH; + mbox_info->block_size = HIF_MBOX_BLOCK_SIZE; + mbox_info->gmbox_addr = HIF_GMBOX_BASE_ADDR; + mbox_info->gmbox_sz = HIF_GMBOX_WIDTH; +} + +static inline void ath6kl_sdio_set_cmd53_arg(u32 *arg, u8 rw, u8 func, + u8 mode, u8 opcode, u32 addr, + u16 blksz) +{ + *arg = (((rw & 1) << 31) | + ((func & 0x7) << 28) | + ((mode & 1) << 27) | + ((opcode & 1) << 26) | + ((addr & 0x1FFFF) << 9) | + (blksz & 0x1FF)); +} + +static inline void ath6kl_sdio_set_cmd52_arg(u32 *arg, u8 write, u8 raw, + unsigned int address, + unsigned char val) +{ + const u8 func = 0; + + *arg = ((write & 1) << 31) | + ((func & 0x7) << 28) | + ((raw & 1) << 27) | + (1 << 26) | + ((address & 0x1FFFF) << 9) | + (1 << 8) | + (val & 0xFF); +} + +static int ath6kl_sdio_func0_cmd52_wr_byte(struct mmc_card *card, + unsigned int address, + unsigned char byte) +{ + struct mmc_command io_cmd; + + memset(&io_cmd, 0, sizeof(io_cmd)); + ath6kl_sdio_set_cmd52_arg(&io_cmd.arg, 1, 0, address, byte); + io_cmd.opcode = SD_IO_RW_DIRECT; + io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC; + + return mmc_wait_for_cmd(card->host, &io_cmd, 0); +} + +static struct bus_request *ath6kl_sdio_alloc_busreq(struct ath6kl_sdio *ar_sdio) +{ + struct bus_request *bus_req; + unsigned long flag; + + spin_lock_irqsave(&ar_sdio->lock, flag); + + if (list_empty(&ar_sdio->bus_req_freeq)) { + spin_unlock_irqrestore(&ar_sdio->lock, flag); + return NULL; + } + + bus_req = list_first_entry(&ar_sdio->bus_req_freeq, + struct bus_request, list); + list_del(&bus_req->list); + + spin_unlock_irqrestore(&ar_sdio->lock, flag); + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: bus request 0x%p\n", __func__, bus_req); + + return bus_req; +} + +static void ath6kl_sdio_free_bus_req(struct ath6kl_sdio *ar_sdio, + struct bus_request *bus_req) +{ + unsigned long flag; + + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: bus request 0x%p\n", __func__, bus_req); + + spin_lock_irqsave(&ar_sdio->lock, flag); + list_add_tail(&bus_req->list, &ar_sdio->bus_req_freeq); + spin_unlock_irqrestore(&ar_sdio->lock, flag); +} + +static void ath6kl_sdio_setup_scat_data(struct hif_scatter_req *scat_req, + struct hif_scatter_req_priv *s_req_priv, + struct mmc_data *data) +{ + struct scatterlist *sg; + int i; + + data->blksz = HIF_MBOX_BLOCK_SIZE; + data->blocks = scat_req->len / HIF_MBOX_BLOCK_SIZE; + + ath6kl_dbg(ATH6KL_DBG_SCATTER, + "hif-scatter: (%s) addr: 0x%X, (block len: %d, block count: %d) , (tot:%d,sg:%d)\n", + (scat_req->req & HIF_WRITE) ? "WR" : "RD", scat_req->addr, + data->blksz, data->blocks, scat_req->len, + scat_req->scat_entries); + + data->flags = (scat_req->req & HIF_WRITE) ? MMC_DATA_WRITE : + MMC_DATA_READ; + + /* fill SG entries */ + sg = s_req_priv->sgentries; + sg_init_table(sg, scat_req->scat_entries); + + /* assemble SG list */ + for (i = 0; i < scat_req->scat_entries; i++, sg++) { + if ((unsigned long)scat_req->scat_list[i].buf & 0x3) + /* + * Some scatter engines can handle unaligned + * buffers, print this as informational only. + */ + ath6kl_dbg(ATH6KL_DBG_SCATTER, + "(%s) scatter buffer is unaligned 0x%p\n", + scat_req->req & HIF_WRITE ? "WR" : "RD", + scat_req->scat_list[i].buf); + + ath6kl_dbg(ATH6KL_DBG_SCATTER, "%d: addr:0x%p, len:%d\n", + i, scat_req->scat_list[i].buf, + scat_req->scat_list[i].len); + + sg_set_buf(sg, scat_req->scat_list[i].buf, + scat_req->scat_list[i].len); + } + + /* set scatter-gather table for request */ + data->sg = s_req_priv->sgentries; + data->sg_len = scat_req->scat_entries; +} + +static int ath6kl_sdio_scat_rw(struct ath6kl_sdio *ar_sdio, + struct bus_request *req) +{ + struct mmc_request mmc_req; + struct mmc_command cmd; + struct mmc_data data; + struct hif_scatter_req *scat_req; + u8 opcode, rw; + int status; + + scat_req = req->scat_req; + + memset(&mmc_req, 0, sizeof(struct mmc_request)); + memset(&cmd, 0, sizeof(struct mmc_command)); + memset(&data, 0, sizeof(struct mmc_data)); + + ath6kl_sdio_setup_scat_data(scat_req, scat_req->req_priv, &data); + + opcode = (scat_req->req & HIF_FIXED_ADDRESS) ? + CMD53_ARG_FIXED_ADDRESS : CMD53_ARG_INCR_ADDRESS; + + rw = (scat_req->req & HIF_WRITE) ? CMD53_ARG_WRITE : CMD53_ARG_READ; + + /* Fixup the address so that the last byte will fall on MBOX EOM */ + if (scat_req->req & HIF_WRITE) { + if (scat_req->addr == HIF_MBOX_BASE_ADDR) + scat_req->addr += HIF_MBOX_WIDTH - scat_req->len; + else + /* Uses extended address range */ + scat_req->addr += HIF_MBOX0_EXT_WIDTH - scat_req->len; + } + + /* set command argument */ + ath6kl_sdio_set_cmd53_arg(&cmd.arg, rw, ar_sdio->func->num, + CMD53_ARG_BLOCK_BASIS, opcode, scat_req->addr, + data.blocks); + + cmd.opcode = SD_IO_RW_EXTENDED; + cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; + + mmc_req.cmd = &cmd; + mmc_req.data = &data; + + mmc_set_data_timeout(&data, ar_sdio->func->card); + /* synchronous call to process request */ + mmc_wait_for_req(ar_sdio->func->card->host, &mmc_req); + + status = cmd.error ? cmd.error : data.error; + scat_req->status = status; + + if (scat_req->status) + ath6kl_err("Scatter write request failed:%d\n", + scat_req->status); + + if (scat_req->req & HIF_ASYNCHRONOUS) + scat_req->complete(scat_req); + + return status; +} + + +/* callback to issue a read-write scatter request */ +static int ath6kl_sdio_async_rw_scatter(struct ath6kl *ar, + struct hif_scatter_req *scat_req) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + struct hif_scatter_req_priv *req_priv = scat_req->req_priv; + u32 request = scat_req->req; + int status = 0; + unsigned long flags; + + if (!scat_req->len) + return -EINVAL; + + ath6kl_dbg(ATH6KL_DBG_SCATTER, + "hif-scatter: total len: %d scatter entries: %d\n", + scat_req->len, scat_req->scat_entries); + + if (request & HIF_SYNCHRONOUS) { + sdio_claim_host(ar_sdio->func); + status = ath6kl_sdio_scat_rw(ar_sdio, req_priv->busrequest); + sdio_release_host(ar_sdio->func); + } else { + spin_lock_irqsave(&ar_sdio->wr_async_lock, flags); + list_add_tail(&req_priv->busrequest->list, &ar_sdio->wr_asyncq); + spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags); + queue_work(ar->ath6kl_wq, &ar_sdio->wr_async_work); + } + + return status; +} + +/* clean up scatter support */ +static void ath6kl_sdio_cleanup_scat_resource(struct ath6kl_sdio *ar_sdio) +{ + struct hif_scatter_req *s_req, *tmp_req; + unsigned long flag; + + /* empty the free list */ + spin_lock_irqsave(&ar_sdio->scat_lock, flag); + list_for_each_entry_safe(s_req, tmp_req, &ar_sdio->scat_req, list) { + list_del(&s_req->list); + spin_unlock_irqrestore(&ar_sdio->scat_lock, flag); + + if (s_req->req_priv && s_req->req_priv->busrequest) + ath6kl_sdio_free_bus_req(ar_sdio, + s_req->req_priv->busrequest); + kfree(s_req->virt_dma_buf); + kfree(s_req->req_priv); + kfree(s_req); + + spin_lock_irqsave(&ar_sdio->scat_lock, flag); + } + spin_unlock_irqrestore(&ar_sdio->scat_lock, flag); +} + +/* setup of HIF scatter resources */ +static int ath6kl_sdio_setup_scat_resource(struct ath6kl_sdio *ar_sdio, + struct hif_dev_scat_sup_info *pinfo) +{ + struct hif_scatter_req *s_req; + struct bus_request *bus_req; + int i, scat_req_sz, scat_list_sz; + + /* check if host supports scatter and it meets our requirements */ + if (ar_sdio->func->card->host->max_segs < MAX_SCATTER_ENTRIES_PER_REQ) { + ath6kl_err("hif-scatter: host only supports scatter of : %d entries, need: %d\n", + ar_sdio->func->card->host->max_segs, + MAX_SCATTER_ENTRIES_PER_REQ); + return -EINVAL; + } + + ath6kl_dbg(ATH6KL_DBG_ANY, + "hif-scatter enabled: max scatter req : %d entries: %d\n", + MAX_SCATTER_REQUESTS, MAX_SCATTER_ENTRIES_PER_REQ); + + scat_list_sz = (MAX_SCATTER_ENTRIES_PER_REQ - 1) * + sizeof(struct hif_scatter_item); + scat_req_sz = sizeof(*s_req) + scat_list_sz; + + for (i = 0; i < MAX_SCATTER_REQUESTS; i++) { + /* allocate the scatter request */ + s_req = kzalloc(scat_req_sz, GFP_KERNEL); + if (!s_req) + goto fail_setup_scat; + + /* allocate the private request blob */ + s_req->req_priv = kzalloc(sizeof(*s_req->req_priv), GFP_KERNEL); + + if (!s_req->req_priv) { + kfree(s_req); + goto fail_setup_scat; + } + + /* allocate a bus request for this scatter request */ + bus_req = ath6kl_sdio_alloc_busreq(ar_sdio); + if (!bus_req) { + kfree(s_req->req_priv); + kfree(s_req); + goto fail_setup_scat; + } + + /* assign the scatter request to this bus request */ + bus_req->scat_req = s_req; + s_req->req_priv->busrequest = bus_req; + /* add it to the scatter pool */ + hif_scatter_req_add(ar_sdio->ar, s_req); + } + + /* set scatter function pointers */ + pinfo->rw_scat_func = ath6kl_sdio_async_rw_scatter; + pinfo->max_scat_entries = MAX_SCATTER_ENTRIES_PER_REQ; + pinfo->max_xfer_szper_scatreq = MAX_SCATTER_REQ_TRANSFER_SIZE; + + return 0; + +fail_setup_scat: + ath6kl_err("hif-scatter: failed to alloc scatter resources !\n"); + ath6kl_sdio_cleanup_scat_resource(ar_sdio); + + return -ENOMEM; +} + +static int ath6kl_sdio_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf, + u32 len, u32 request) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + u8 *tbuf = NULL; + int ret; + bool bounced = false; + + if (request & HIF_BLOCK_BASIS) + len = round_down(len, HIF_MBOX_BLOCK_SIZE); + + if (buf_needs_bounce(buf)) { + if (!ar_sdio->dma_buffer) + return -ENOMEM; + tbuf = ar_sdio->dma_buffer; + memcpy(tbuf, buf, len); + bounced = true; + } else + tbuf = buf; + + sdio_claim_host(ar_sdio->func); + if (request & HIF_WRITE) { + if (addr >= HIF_MBOX_BASE_ADDR && + addr <= HIF_MBOX_END_ADDR) + addr += (HIF_MBOX_WIDTH - len); + + if (addr == HIF_MBOX0_EXT_BASE_ADDR) + addr += HIF_MBOX0_EXT_WIDTH - len; + + if (request & HIF_FIXED_ADDRESS) + ret = sdio_writesb(ar_sdio->func, addr, tbuf, len); + else + ret = sdio_memcpy_toio(ar_sdio->func, addr, tbuf, len); + } else { + if (request & HIF_FIXED_ADDRESS) + ret = sdio_readsb(ar_sdio->func, tbuf, addr, len); + else + ret = sdio_memcpy_fromio(ar_sdio->func, tbuf, + addr, len); + if (bounced) + memcpy(buf, tbuf, len); + } + sdio_release_host(ar_sdio->func); + + return ret; +} + +static void __ath6kl_sdio_write_async(struct ath6kl_sdio *ar_sdio, + struct bus_request *req) +{ + if (req->scat_req) + ath6kl_sdio_scat_rw(ar_sdio, req); + else { + void *context; + int status; + + status = ath6kl_sdio_read_write_sync(ar_sdio->ar, req->address, + req->buffer, req->length, + req->request); + context = req->packet; + ath6kl_sdio_free_bus_req(ar_sdio, req); + ath6kldev_rw_comp_handler(context, status); + } +} + +static void ath6kl_sdio_write_async_work(struct work_struct *work) +{ + struct ath6kl_sdio *ar_sdio; + unsigned long flags; + struct bus_request *req, *tmp_req; + + ar_sdio = container_of(work, struct ath6kl_sdio, wr_async_work); + sdio_claim_host(ar_sdio->func); + + spin_lock_irqsave(&ar_sdio->wr_async_lock, flags); + list_for_each_entry_safe(req, tmp_req, &ar_sdio->wr_asyncq, list) { + list_del(&req->list); + spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags); + __ath6kl_sdio_write_async(ar_sdio, req); + spin_lock_irqsave(&ar_sdio->wr_async_lock, flags); + } + spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags); + + sdio_release_host(ar_sdio->func); +} + +static void ath6kl_sdio_irq_handler(struct sdio_func *func) +{ + int status; + struct ath6kl_sdio *ar_sdio; + + ar_sdio = sdio_get_drvdata(func); + atomic_set(&ar_sdio->irq_handling, 1); + + /* + * Release the host during interrups so we can pick it back up when + * we process commands. + */ + sdio_release_host(ar_sdio->func); + + status = ath6kldev_intr_bh_handler(ar_sdio->ar); + sdio_claim_host(ar_sdio->func); + atomic_set(&ar_sdio->irq_handling, 0); + WARN_ON(status && status != -ECANCELED); +} + +static int ath6kl_sdio_power_on(struct ath6kl_sdio *ar_sdio) +{ + struct sdio_func *func = ar_sdio->func; + int ret = 0; + + if (!ar_sdio->is_disabled) + return 0; + + sdio_claim_host(func); + + ret = sdio_enable_func(func); + if (ret) { + ath6kl_err("Unable to enable sdio func: %d)\n", ret); + sdio_release_host(func); + return ret; + } + + sdio_release_host(func); + + /* + * Wait for hardware to initialise. It should take a lot less than + * 10 ms but let's be conservative here. + */ + msleep(10); + + ar_sdio->is_disabled = false; + + return ret; +} + +static int ath6kl_sdio_power_off(struct ath6kl_sdio *ar_sdio) +{ + int ret; + + if (ar_sdio->is_disabled) + return 0; + + /* Disable the card */ + sdio_claim_host(ar_sdio->func); + ret = sdio_disable_func(ar_sdio->func); + sdio_release_host(ar_sdio->func); + + if (ret) + return ret; + + ar_sdio->is_disabled = true; + + return ret; +} + +static int ath6kl_sdio_write_async(struct ath6kl *ar, u32 address, u8 *buffer, + u32 length, u32 request, + struct htc_packet *packet) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + struct bus_request *bus_req; + unsigned long flags; + + bus_req = ath6kl_sdio_alloc_busreq(ar_sdio); + + if (!bus_req) + return -ENOMEM; + + bus_req->address = address; + bus_req->buffer = buffer; + bus_req->length = length; + bus_req->request = request; + bus_req->packet = packet; + + spin_lock_irqsave(&ar_sdio->wr_async_lock, flags); + list_add_tail(&bus_req->list, &ar_sdio->wr_asyncq); + spin_unlock_irqrestore(&ar_sdio->wr_async_lock, flags); + queue_work(ar->ath6kl_wq, &ar_sdio->wr_async_work); + + return 0; +} + +static void ath6kl_sdio_irq_enable(struct ath6kl *ar) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + int ret; + + sdio_claim_host(ar_sdio->func); + + /* Register the isr */ + ret = sdio_claim_irq(ar_sdio->func, ath6kl_sdio_irq_handler); + if (ret) + ath6kl_err("Failed to claim sdio irq: %d\n", ret); + + sdio_release_host(ar_sdio->func); +} + +static void ath6kl_sdio_irq_disable(struct ath6kl *ar) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + int ret; + + sdio_claim_host(ar_sdio->func); + + /* Mask our function IRQ */ + while (atomic_read(&ar_sdio->irq_handling)) { + sdio_release_host(ar_sdio->func); + schedule_timeout(HZ / 10); + sdio_claim_host(ar_sdio->func); + } + + ret = sdio_release_irq(ar_sdio->func); + if (ret) + ath6kl_err("Failed to release sdio irq: %d\n", ret); + + sdio_release_host(ar_sdio->func); +} + +static struct hif_scatter_req *ath6kl_sdio_scatter_req_get(struct ath6kl *ar) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + struct hif_scatter_req *node = NULL; + unsigned long flag; + + spin_lock_irqsave(&ar_sdio->scat_lock, flag); + + if (!list_empty(&ar_sdio->scat_req)) { + node = list_first_entry(&ar_sdio->scat_req, + struct hif_scatter_req, list); + list_del(&node->list); + } + + spin_unlock_irqrestore(&ar_sdio->scat_lock, flag); + + return node; +} + +static void ath6kl_sdio_scatter_req_add(struct ath6kl *ar, + struct hif_scatter_req *s_req) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + unsigned long flag; + + spin_lock_irqsave(&ar_sdio->scat_lock, flag); + + list_add_tail(&s_req->list, &ar_sdio->scat_req); + + spin_unlock_irqrestore(&ar_sdio->scat_lock, flag); + +} + +static int ath6kl_sdio_enable_scatter(struct ath6kl *ar, + struct hif_dev_scat_sup_info *info) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + int ret; + + ret = ath6kl_sdio_setup_scat_resource(ar_sdio, info); + + return ret; +} + +static void ath6kl_sdio_cleanup_scatter(struct ath6kl *ar) +{ + struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar); + + ath6kl_sdio_cleanup_scat_resource(ar_sdio); +} + +static const struct ath6kl_hif_ops ath6kl_sdio_ops = { + .read_write_sync = ath6kl_sdio_read_write_sync, + .write_async = ath6kl_sdio_write_async, + .irq_enable = ath6kl_sdio_irq_enable, + .irq_disable = ath6kl_sdio_irq_disable, + .scatter_req_get = ath6kl_sdio_scatter_req_get, + .scatter_req_add = ath6kl_sdio_scatter_req_add, + .enable_scatter = ath6kl_sdio_enable_scatter, + .cleanup_scatter = ath6kl_sdio_cleanup_scatter, +}; + +static int ath6kl_sdio_probe(struct sdio_func *func, + const struct sdio_device_id *id) +{ + int ret; + struct ath6kl_sdio *ar_sdio; + struct ath6kl *ar; + int count; + + ath6kl_dbg(ATH6KL_DBG_TRC, + "%s: func: 0x%X, vendor id: 0x%X, dev id: 0x%X, block size: 0x%X/0x%X\n", + __func__, func->num, func->vendor, + func->device, func->max_blksize, func->cur_blksize); + + ar_sdio = kzalloc(sizeof(struct ath6kl_sdio), GFP_KERNEL); + if (!ar_sdio) + return -ENOMEM; + + ar_sdio->dma_buffer = kzalloc(HIF_DMA_BUFFER_SIZE, GFP_KERNEL); + if (!ar_sdio->dma_buffer) { + ret = -ENOMEM; + goto err_hif; + } + + ar_sdio->func = func; + sdio_set_drvdata(func, ar_sdio); + + ar_sdio->id = id; + ar_sdio->is_disabled = true; + + spin_lock_init(&ar_sdio->lock); + spin_lock_init(&ar_sdio->scat_lock); + spin_lock_init(&ar_sdio->wr_async_lock); + + INIT_LIST_HEAD(&ar_sdio->scat_req); + INIT_LIST_HEAD(&ar_sdio->bus_req_freeq); + INIT_LIST_HEAD(&ar_sdio->wr_asyncq); + + INIT_WORK(&ar_sdio->wr_async_work, ath6kl_sdio_write_async_work); + + for (count = 0; count < BUS_REQUEST_MAX_NUM; count++) + ath6kl_sdio_free_bus_req(ar_sdio, &ar_sdio->bus_req[count]); + + ar = ath6kl_core_alloc(&ar_sdio->func->dev); + if (!ar) { + ath6kl_err("Failed to alloc ath6kl core\n"); + ret = -ENOMEM; + goto err_dma; + } + + ar_sdio->ar = ar; + ar->hif_priv = ar_sdio; + ar->hif_ops = &ath6kl_sdio_ops; + + ath6kl_sdio_set_mbox_info(ar); + + sdio_claim_host(func); + + if ((ar_sdio->id->device & MANUFACTURER_ID_ATH6KL_BASE_MASK) >= + MANUFACTURER_ID_AR6003_BASE) { + /* enable 4-bit ASYNC interrupt on AR6003 or later */ + ret = ath6kl_sdio_func0_cmd52_wr_byte(func->card, + CCCR_SDIO_IRQ_MODE_REG, + SDIO_IRQ_MODE_ASYNC_4BIT_IRQ); + if (ret) { + ath6kl_err("Failed to enable 4-bit async irq mode %d\n", + ret); + sdio_release_host(func); + goto err_dma; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "4-bit async irq mode enabled\n"); + } + + /* give us some time to enable, in ms */ + func->enable_timeout = 100; + + sdio_release_host(func); + + ret = ath6kl_sdio_power_on(ar_sdio); + if (ret) + goto err_dma; + + sdio_claim_host(func); + + ret = sdio_set_block_size(func, HIF_MBOX_BLOCK_SIZE); + if (ret) { + ath6kl_err("Set sdio block size %d failed: %d)\n", + HIF_MBOX_BLOCK_SIZE, ret); + sdio_release_host(func); + goto err_off; + } + + sdio_release_host(func); + + ret = ath6kl_core_init(ar); + if (ret) { + ath6kl_err("Failed to init ath6kl core\n"); + goto err_off; + } + + return ret; + +err_off: + ath6kl_sdio_power_off(ar_sdio); +err_dma: + kfree(ar_sdio->dma_buffer); +err_hif: + kfree(ar_sdio); + + return ret; +} + +static void ath6kl_sdio_remove(struct sdio_func *func) +{ + struct ath6kl_sdio *ar_sdio; + + ar_sdio = sdio_get_drvdata(func); + + ath6kl_stop_txrx(ar_sdio->ar); + cancel_work_sync(&ar_sdio->wr_async_work); + + ath6kl_unavail_ev(ar_sdio->ar); + + ath6kl_sdio_power_off(ar_sdio); + + kfree(ar_sdio->dma_buffer); + kfree(ar_sdio); +} + +static const struct sdio_device_id ath6kl_sdio_devices[] = { + {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6003_BASE | 0x0))}, + {SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_AR6003_BASE | 0x1))}, + {}, +}; + +MODULE_DEVICE_TABLE(sdio, ath6kl_sdio_devices); + +static struct sdio_driver ath6kl_sdio_driver = { + .name = "ath6kl_sdio", + .id_table = ath6kl_sdio_devices, + .probe = ath6kl_sdio_probe, + .remove = ath6kl_sdio_remove, +}; + +static int __init ath6kl_sdio_init(void) +{ + int ret; + + ret = sdio_register_driver(&ath6kl_sdio_driver); + if (ret) + ath6kl_err("sdio driver registration failed: %d\n", ret); + + return ret; +} + +static void __exit ath6kl_sdio_exit(void) +{ + sdio_unregister_driver(&ath6kl_sdio_driver); +} + +module_init(ath6kl_sdio_init); +module_exit(ath6kl_sdio_exit); + +MODULE_AUTHOR("Atheros Communications, Inc."); +MODULE_DESCRIPTION("Driver support for Atheros AR600x SDIO devices"); +MODULE_LICENSE("Dual BSD/GPL"); + +MODULE_FIRMWARE(AR6003_REV2_OTP_FILE); +MODULE_FIRMWARE(AR6003_REV2_FIRMWARE_FILE); +MODULE_FIRMWARE(AR6003_REV2_PATCH_FILE); +MODULE_FIRMWARE(AR6003_REV2_BOARD_DATA_FILE); +MODULE_FIRMWARE(AR6003_REV2_DEFAULT_BOARD_DATA_FILE); +MODULE_FIRMWARE(AR6003_REV3_OTP_FILE); +MODULE_FIRMWARE(AR6003_REV3_FIRMWARE_FILE); +MODULE_FIRMWARE(AR6003_REV3_PATCH_FILE); +MODULE_FIRMWARE(AR6003_REV3_BOARD_DATA_FILE); +MODULE_FIRMWARE(AR6003_REV3_DEFAULT_BOARD_DATA_FILE); diff --git a/drivers/net/wireless/ath/ath6kl/target.h b/drivers/net/wireless/ath/ath6kl/target.h new file mode 100644 index 000000000000..519a013c9991 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/target.h @@ -0,0 +1,331 @@ +/* + * Copyright (c) 2004-2010 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef TARGET_H +#define TARGET_H + +#define AR6003_BOARD_DATA_SZ 1024 +#define AR6003_BOARD_EXT_DATA_SZ 768 + +#define RESET_CONTROL_ADDRESS 0x00000000 +#define RESET_CONTROL_COLD_RST 0x00000100 +#define RESET_CONTROL_MBOX_RST 0x00000004 + +#define CPU_CLOCK_STANDARD_S 0 +#define CPU_CLOCK_STANDARD 0x00000003 +#define CPU_CLOCK_ADDRESS 0x00000020 + +#define CLOCK_CONTROL_ADDRESS 0x00000028 +#define CLOCK_CONTROL_LF_CLK32_S 2 +#define CLOCK_CONTROL_LF_CLK32 0x00000004 + +#define SYSTEM_SLEEP_ADDRESS 0x000000c4 +#define SYSTEM_SLEEP_DISABLE_S 0 +#define SYSTEM_SLEEP_DISABLE 0x00000001 + +#define LPO_CAL_ADDRESS 0x000000e0 +#define LPO_CAL_ENABLE_S 20 +#define LPO_CAL_ENABLE 0x00100000 + +#define GPIO_PIN10_ADDRESS 0x00000050 +#define GPIO_PIN11_ADDRESS 0x00000054 +#define GPIO_PIN12_ADDRESS 0x00000058 +#define GPIO_PIN13_ADDRESS 0x0000005c + +#define HOST_INT_STATUS_ADDRESS 0x00000400 +#define HOST_INT_STATUS_ERROR_S 7 +#define HOST_INT_STATUS_ERROR 0x00000080 + +#define HOST_INT_STATUS_CPU_S 6 +#define HOST_INT_STATUS_CPU 0x00000040 + +#define HOST_INT_STATUS_COUNTER_S 4 +#define HOST_INT_STATUS_COUNTER 0x00000010 + +#define CPU_INT_STATUS_ADDRESS 0x00000401 + +#define ERROR_INT_STATUS_ADDRESS 0x00000402 +#define ERROR_INT_STATUS_WAKEUP_S 2 +#define ERROR_INT_STATUS_WAKEUP 0x00000004 + +#define ERROR_INT_STATUS_RX_UNDERFLOW_S 1 +#define ERROR_INT_STATUS_RX_UNDERFLOW 0x00000002 + +#define ERROR_INT_STATUS_TX_OVERFLOW_S 0 +#define ERROR_INT_STATUS_TX_OVERFLOW 0x00000001 + +#define COUNTER_INT_STATUS_ADDRESS 0x00000403 +#define COUNTER_INT_STATUS_COUNTER_S 0 +#define COUNTER_INT_STATUS_COUNTER 0x000000ff + +#define RX_LOOKAHEAD_VALID_ADDRESS 0x00000405 + +#define INT_STATUS_ENABLE_ADDRESS 0x00000418 +#define INT_STATUS_ENABLE_ERROR_S 7 +#define INT_STATUS_ENABLE_ERROR 0x00000080 + +#define INT_STATUS_ENABLE_CPU_S 6 +#define INT_STATUS_ENABLE_CPU 0x00000040 + +#define INT_STATUS_ENABLE_INT_S 5 +#define INT_STATUS_ENABLE_INT 0x00000020 +#define INT_STATUS_ENABLE_COUNTER_S 4 +#define INT_STATUS_ENABLE_COUNTER 0x00000010 + +#define INT_STATUS_ENABLE_MBOX_DATA_S 0 +#define INT_STATUS_ENABLE_MBOX_DATA 0x0000000f + +#define CPU_INT_STATUS_ENABLE_ADDRESS 0x00000419 +#define CPU_INT_STATUS_ENABLE_BIT_S 0 +#define CPU_INT_STATUS_ENABLE_BIT 0x000000ff + +#define ERROR_STATUS_ENABLE_ADDRESS 0x0000041a +#define ERROR_STATUS_ENABLE_RX_UNDERFLOW_S 1 +#define ERROR_STATUS_ENABLE_RX_UNDERFLOW 0x00000002 + +#define ERROR_STATUS_ENABLE_TX_OVERFLOW_S 0 +#define ERROR_STATUS_ENABLE_TX_OVERFLOW 0x00000001 + +#define COUNTER_INT_STATUS_ENABLE_ADDRESS 0x0000041b +#define COUNTER_INT_STATUS_ENABLE_BIT_S 0 +#define COUNTER_INT_STATUS_ENABLE_BIT 0x000000ff + +#define COUNT_ADDRESS 0x00000420 + +#define COUNT_DEC_ADDRESS 0x00000440 + +#define WINDOW_DATA_ADDRESS 0x00000474 +#define WINDOW_WRITE_ADDR_ADDRESS 0x00000478 +#define WINDOW_READ_ADDR_ADDRESS 0x0000047c +#define CPU_DBG_SEL_ADDRESS 0x00000483 +#define CPU_DBG_ADDRESS 0x00000484 + +#define LOCAL_SCRATCH_ADDRESS 0x000000c0 +#define ATH6KL_OPTION_SLEEP_DISABLE 0x08 + +#define RTC_BASE_ADDRESS 0x00004000 +#define GPIO_BASE_ADDRESS 0x00014000 +#define MBOX_BASE_ADDRESS 0x00018000 +#define ANALOG_INTF_BASE_ADDRESS 0x0001c000 + +/* real name of the register is unknown */ +#define ATH6KL_ANALOG_PLL_REGISTER (ANALOG_INTF_BASE_ADDRESS + 0x284) + +#define SM(f, v) (((v) << f##_S) & f) +#define MS(f, v) (((v) & f) >> f##_S) + +/* + * xxx_HOST_INTEREST_ADDRESS is the address in Target RAM of the + * host_interest structure. + * + * Host Interest is shared between Host and Target in order to coordinate + * between the two, and is intended to remain constant (with additions only + * at the end). + */ +#define ATH6KL_HI_START_ADDR 0x00540600 + +/* + * These are items that the Host may need to access + * via BMI or via the Diagnostic Window. The position + * of items in this structure must remain constant. + * across firmware revisions! + * + * Types for each item must be fixed size across target and host platforms. + * The structure is used only to calculate offset for each register with + * HI_ITEM() macro, no values are stored to it. + * + * More items may be added at the end. + */ +struct host_interest { + /* + * Pointer to application-defined area, if any. + * Set by Target application during startup. + */ + u32 hi_app_host_interest; /* 0x00 */ + + /* Pointer to register dump area, valid after Target crash. */ + u32 hi_failure_state; /* 0x04 */ + + /* Pointer to debug logging header */ + u32 hi_dbglog_hdr; /* 0x08 */ + + u32 hi_unused1; /* 0x0c */ + + /* + * General-purpose flag bits, similar to ATH6KL_OPTION_* flags. + * Can be used by application rather than by OS. + */ + u32 hi_option_flag; /* 0x10 */ + + /* + * Boolean that determines whether or not to + * display messages on the serial port. + */ + u32 hi_serial_enable; /* 0x14 */ + + /* Start address of DataSet index, if any */ + u32 hi_dset_list_head; /* 0x18 */ + + /* Override Target application start address */ + u32 hi_app_start; /* 0x1c */ + + /* Clock and voltage tuning */ + u32 hi_skip_clock_init; /* 0x20 */ + u32 hi_core_clock_setting; /* 0x24 */ + u32 hi_cpu_clock_setting; /* 0x28 */ + u32 hi_system_sleep_setting; /* 0x2c */ + u32 hi_xtal_control_setting; /* 0x30 */ + u32 hi_pll_ctrl_setting_24ghz; /* 0x34 */ + u32 hi_pll_ctrl_setting_5ghz; /* 0x38 */ + u32 hi_ref_voltage_trim_setting; /* 0x3c */ + u32 hi_clock_info; /* 0x40 */ + + /* + * Flash configuration overrides, used only + * when firmware is not executing from flash. + * (When using flash, modify the global variables + * with equivalent names.) + */ + u32 hi_bank0_addr_value; /* 0x44 */ + u32 hi_bank0_read_value; /* 0x48 */ + u32 hi_bank0_write_value; /* 0x4c */ + u32 hi_bank0_config_value; /* 0x50 */ + + /* Pointer to Board Data */ + u32 hi_board_data; /* 0x54 */ + u32 hi_board_data_initialized; /* 0x58 */ + + u32 hi_dset_ram_index_tbl; /* 0x5c */ + + u32 hi_desired_baud_rate; /* 0x60 */ + u32 hi_dbglog_config; /* 0x64 */ + u32 hi_end_ram_reserve_sz; /* 0x68 */ + u32 hi_mbox_io_block_sz; /* 0x6c */ + + u32 hi_num_bpatch_streams; /* 0x70 -- unused */ + u32 hi_mbox_isr_yield_limit; /* 0x74 */ + + u32 hi_refclk_hz; /* 0x78 */ + u32 hi_ext_clk_detected; /* 0x7c */ + u32 hi_dbg_uart_txpin; /* 0x80 */ + u32 hi_dbg_uart_rxpin; /* 0x84 */ + u32 hi_hci_uart_baud; /* 0x88 */ + u32 hi_hci_uart_pin_assignments; /* 0x8C */ + /* + * NOTE: byte [0] = tx pin, [1] = rx pin, [2] = rts pin, [3] = cts + * pin + */ + u32 hi_hci_uart_baud_scale_val; /* 0x90 */ + u32 hi_hci_uart_baud_step_val; /* 0x94 */ + + u32 hi_allocram_start; /* 0x98 */ + u32 hi_allocram_sz; /* 0x9c */ + u32 hi_hci_bridge_flags; /* 0xa0 */ + u32 hi_hci_uart_support_pins; /* 0xa4 */ + /* + * NOTE: byte [0] = RESET pin (bit 7 is polarity), + * bytes[1]..bytes[3] are for future use + */ + u32 hi_hci_uart_pwr_mgmt_params; /* 0xa8 */ + /* + * 0xa8 - [1]: 0 = UART FC active low, 1 = UART FC active high + * [31:16]: wakeup timeout in ms + */ + + /* Pointer to extended board data */ + u32 hi_board_ext_data; /* 0xac */ + u32 hi_board_ext_data_config; /* 0xb0 */ + + /* + * Bit [0] : valid + * Bit[31:16: size + */ + /* + * hi_reset_flag is used to do some stuff when target reset. + * such as restore app_start after warm reset or + * preserve host Interest area, or preserve ROM data, literals etc. + */ + u32 hi_reset_flag; /* 0xb4 */ + /* indicate hi_reset_flag is valid */ + u32 hi_reset_flag_valid; /* 0xb8 */ + u32 hi_hci_uart_pwr_mgmt_params_ext; /* 0xbc */ + /* + * 0xbc - [31:0]: idle timeout in ms + */ + /* ACS flags */ + u32 hi_acs_flags; /* 0xc0 */ + u32 hi_console_flags; /* 0xc4 */ + u32 hi_nvram_state; /* 0xc8 */ + u32 hi_option_flag2; /* 0xcc */ + + /* If non-zero, override values sent to Host in WMI_READY event. */ + u32 hi_sw_version_override; /* 0xd0 */ + u32 hi_abi_version_override; /* 0xd4 */ + + /* + * Percentage of high priority RX traffic to total expected RX traffic - + * applicable only to ar6004 + */ + u32 hi_hp_rx_traffic_ratio; /* 0xd8 */ + + /* test applications flags */ + u32 hi_test_apps_related ; /* 0xdc */ + /* location of test script */ + u32 hi_ota_testscript; /* 0xe0 */ + /* location of CAL data */ + u32 hi_cal_data; /* 0xe4 */ + /* Number of packet log buffers */ + u32 hi_pktlog_num_buffers; /* 0xe8 */ + +} __packed; + +#define HI_ITEM(item) offsetof(struct host_interest, item) + +#define HI_OPTION_MAC_ADDR_METHOD_SHIFT 3 + +#define HI_OPTION_FW_MODE_IBSS 0x0 +#define HI_OPTION_FW_MODE_BSS_STA 0x1 +#define HI_OPTION_FW_MODE_AP 0x2 + +#define HI_OPTION_NUM_DEV_SHIFT 0x9 + +#define HI_OPTION_FW_BRIDGE_SHIFT 0x04 + +/* Fw Mode/SubMode Mask +|------------------------------------------------------------------------------| +| SUB | SUB | SUB | SUB | | | | +| MODE[3] | MODE[2] | MODE[1] | MODE[0] | MODE[3] | MODE[2] | MODE[1] | MODE[0| +| (2) | (2) | (2) | (2) | (2) | (2) | (2) | (2) +|------------------------------------------------------------------------------| +*/ +#define HI_OPTION_FW_MODE_SHIFT 0xC + +/* Convert a Target virtual address into a Target physical address */ +#define TARG_VTOP(vaddr) (vaddr & 0x001fffff) + +#define AR6003_REV2_APP_START_OVERRIDE 0x944C00 +#define AR6003_REV2_APP_LOAD_ADDRESS 0x543180 +#define AR6003_REV2_BOARD_EXT_DATA_ADDRESS 0x57E500 +#define AR6003_REV2_DATASET_PATCH_ADDRESS 0x57e884 +#define AR6003_REV2_RAM_RESERVE_SIZE 6912 + +#define AR6003_REV3_APP_START_OVERRIDE 0x945d00 +#define AR6003_REV3_APP_LOAD_ADDRESS 0x545000 +#define AR6003_REV3_BOARD_EXT_DATA_ADDRESS 0x542330 +#define AR6003_REV3_DATASET_PATCH_ADDRESS 0x57FF74 +#define AR6003_REV3_RAM_RESERVE_SIZE 512 + +#endif diff --git a/drivers/net/wireless/ath/ath6kl/txrx.c b/drivers/net/wireless/ath/ath6kl/txrx.c new file mode 100644 index 000000000000..615b46d388f6 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/txrx.c @@ -0,0 +1,1452 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "core.h" +#include "debug.h" + +static u8 ath6kl_ibss_map_epid(struct sk_buff *skb, struct net_device *dev, + u32 *map_no) +{ + struct ath6kl *ar = ath6kl_priv(dev); + struct ethhdr *eth_hdr; + u32 i, ep_map = -1; + u8 *datap; + + *map_no = 0; + datap = skb->data; + eth_hdr = (struct ethhdr *) (datap + sizeof(struct wmi_data_hdr)); + + if (is_multicast_ether_addr(eth_hdr->h_dest)) + return ENDPOINT_2; + + for (i = 0; i < ar->node_num; i++) { + if (memcmp(eth_hdr->h_dest, ar->node_map[i].mac_addr, + ETH_ALEN) == 0) { + *map_no = i + 1; + ar->node_map[i].tx_pend++; + return ar->node_map[i].ep_id; + } + + if ((ep_map == -1) && !ar->node_map[i].tx_pend) + ep_map = i; + } + + if (ep_map == -1) { + ep_map = ar->node_num; + ar->node_num++; + if (ar->node_num > MAX_NODE_NUM) + return ENDPOINT_UNUSED; + } + + memcpy(ar->node_map[ep_map].mac_addr, eth_hdr->h_dest, ETH_ALEN); + + for (i = ENDPOINT_2; i <= ENDPOINT_5; i++) { + if (!ar->tx_pending[i]) { + ar->node_map[ep_map].ep_id = i; + break; + } + + /* + * No free endpoint is available, start redistribution on + * the inuse endpoints. + */ + if (i == ENDPOINT_5) { + ar->node_map[ep_map].ep_id = ar->next_ep_id; + ar->next_ep_id++; + if (ar->next_ep_id > ENDPOINT_5) + ar->next_ep_id = ENDPOINT_2; + } + } + + *map_no = ep_map + 1; + ar->node_map[ep_map].tx_pend++; + + return ar->node_map[ep_map].ep_id; +} + +static bool ath6kl_powersave_ap(struct ath6kl *ar, struct sk_buff *skb, + bool *more_data) +{ + struct ethhdr *datap = (struct ethhdr *) skb->data; + struct ath6kl_sta *conn = NULL; + bool ps_queued = false, is_psq_empty = false; + + if (is_multicast_ether_addr(datap->h_dest)) { + u8 ctr = 0; + bool q_mcast = false; + + for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { + if (ar->sta_list[ctr].sta_flags & STA_PS_SLEEP) { + q_mcast = true; + break; + } + } + + if (q_mcast) { + /* + * If this transmit is not because of a Dtim Expiry + * q it. + */ + if (!test_bit(DTIM_EXPIRED, &ar->flag)) { + bool is_mcastq_empty = false; + + spin_lock_bh(&ar->mcastpsq_lock); + is_mcastq_empty = + skb_queue_empty(&ar->mcastpsq); + skb_queue_tail(&ar->mcastpsq, skb); + spin_unlock_bh(&ar->mcastpsq_lock); + + /* + * If this is the first Mcast pkt getting + * queued indicate to the target to set the + * BitmapControl LSB of the TIM IE. + */ + if (is_mcastq_empty) + ath6kl_wmi_set_pvb_cmd(ar->wmi, + MCAST_AID, 1); + + ps_queued = true; + } else { + /* + * This transmit is because of Dtim expiry. + * Determine if MoreData bit has to be set. + */ + spin_lock_bh(&ar->mcastpsq_lock); + if (!skb_queue_empty(&ar->mcastpsq)) + *more_data = true; + spin_unlock_bh(&ar->mcastpsq_lock); + } + } + } else { + conn = ath6kl_find_sta(ar, datap->h_dest); + if (!conn) { + dev_kfree_skb(skb); + + /* Inform the caller that the skb is consumed */ + return true; + } + + if (conn->sta_flags & STA_PS_SLEEP) { + if (!(conn->sta_flags & STA_PS_POLLED)) { + /* Queue the frames if the STA is sleeping */ + spin_lock_bh(&conn->psq_lock); + is_psq_empty = skb_queue_empty(&conn->psq); + skb_queue_tail(&conn->psq, skb); + spin_unlock_bh(&conn->psq_lock); + + /* + * If this is the first pkt getting queued + * for this STA, update the PVB for this + * STA. + */ + if (is_psq_empty) + ath6kl_wmi_set_pvb_cmd(ar->wmi, + conn->aid, 1); + + ps_queued = true; + } else { + /* + * This tx is because of a PsPoll. + * Determine if MoreData bit has to be set. + */ + spin_lock_bh(&conn->psq_lock); + if (!skb_queue_empty(&conn->psq)) + *more_data = true; + spin_unlock_bh(&conn->psq_lock); + } + } + } + + return ps_queued; +} + +/* Tx functions */ + +int ath6kl_control_tx(void *devt, struct sk_buff *skb, + enum htc_endpoint_id eid) +{ + struct ath6kl *ar = devt; + int status = 0; + struct ath6kl_cookie *cookie = NULL; + + spin_lock_bh(&ar->lock); + + ath6kl_dbg(ATH6KL_DBG_WLAN_TX, + "%s: skb=0x%p, len=0x%x eid =%d\n", __func__, + skb, skb->len, eid); + + if (test_bit(WMI_CTRL_EP_FULL, &ar->flag) && (eid == ar->ctrl_ep)) { + /* + * Control endpoint is full, don't allocate resources, we + * are just going to drop this packet. + */ + cookie = NULL; + ath6kl_err("wmi ctrl ep full, dropping pkt : 0x%p, len:%d\n", + skb, skb->len); + } else + cookie = ath6kl_alloc_cookie(ar); + + if (cookie == NULL) { + spin_unlock_bh(&ar->lock); + status = -ENOMEM; + goto fail_ctrl_tx; + } + + ar->tx_pending[eid]++; + + if (eid != ar->ctrl_ep) + ar->total_tx_data_pend++; + + spin_unlock_bh(&ar->lock); + + cookie->skb = skb; + cookie->map_no = 0; + set_htc_pkt_info(&cookie->htc_pkt, cookie, skb->data, skb->len, + eid, ATH6KL_CONTROL_PKT_TAG); + + /* + * This interface is asynchronous, if there is an error, cleanup + * will happen in the TX completion callback. + */ + htc_tx(ar->htc_target, &cookie->htc_pkt); + + return 0; + +fail_ctrl_tx: + dev_kfree_skb(skb); + return status; +} + +int ath6kl_data_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct ath6kl *ar = ath6kl_priv(dev); + struct ath6kl_cookie *cookie = NULL; + enum htc_endpoint_id eid = ENDPOINT_UNUSED; + u32 map_no = 0; + u16 htc_tag = ATH6KL_DATA_PKT_TAG; + u8 ac = 99 ; /* initialize to unmapped ac */ + bool chk_adhoc_ps_mapping = false, more_data = false; + struct wmi_tx_meta_v2 meta_v2; + int ret; + + ath6kl_dbg(ATH6KL_DBG_WLAN_TX, + "%s: skb=0x%p, data=0x%p, len=0x%x\n", __func__, + skb, skb->data, skb->len); + + /* If target is not associated */ + if (!test_bit(CONNECTED, &ar->flag)) { + dev_kfree_skb(skb); + return 0; + } + + if (!test_bit(WMI_READY, &ar->flag)) + goto fail_tx; + + /* AP mode Power saving processing */ + if (ar->nw_type == AP_NETWORK) { + if (ath6kl_powersave_ap(ar, skb, &more_data)) + return 0; + } + + if (test_bit(WMI_ENABLED, &ar->flag)) { + memset(&meta_v2, 0, sizeof(meta_v2)); + + if (skb_headroom(skb) < dev->needed_headroom) { + WARN_ON(1); + goto fail_tx; + } + + if (ath6kl_wmi_dix_2_dot3(ar->wmi, skb)) { + ath6kl_err("ath6kl_wmi_dix_2_dot3 failed\n"); + goto fail_tx; + } + + if (ath6kl_wmi_data_hdr_add(ar->wmi, skb, DATA_MSGTYPE, + more_data, 0, 0, NULL)) { + ath6kl_err("wmi_data_hdr_add failed\n"); + goto fail_tx; + } + + if ((ar->nw_type == ADHOC_NETWORK) && + ar->ibss_ps_enable && test_bit(CONNECTED, &ar->flag)) + chk_adhoc_ps_mapping = true; + else { + /* get the stream mapping */ + ret = ath6kl_wmi_implicit_create_pstream(ar->wmi, skb, + 0, test_bit(WMM_ENABLED, &ar->flag), &ac); + if (ret) + goto fail_tx; + } + } else + goto fail_tx; + + spin_lock_bh(&ar->lock); + + if (chk_adhoc_ps_mapping) + eid = ath6kl_ibss_map_epid(skb, dev, &map_no); + else + eid = ar->ac2ep_map[ac]; + + if (eid == 0 || eid == ENDPOINT_UNUSED) { + ath6kl_err("eid %d is not mapped!\n", eid); + spin_unlock_bh(&ar->lock); + goto fail_tx; + } + + /* allocate resource for this packet */ + cookie = ath6kl_alloc_cookie(ar); + + if (!cookie) { + spin_unlock_bh(&ar->lock); + goto fail_tx; + } + + /* update counts while the lock is held */ + ar->tx_pending[eid]++; + ar->total_tx_data_pend++; + + spin_unlock_bh(&ar->lock); + + cookie->skb = skb; + cookie->map_no = map_no; + set_htc_pkt_info(&cookie->htc_pkt, cookie, skb->data, skb->len, + eid, htc_tag); + + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, __func__, skb->data, skb->len); + + /* + * HTC interface is asynchronous, if this fails, cleanup will + * happen in the ath6kl_tx_complete callback. + */ + htc_tx(ar->htc_target, &cookie->htc_pkt); + + return 0; + +fail_tx: + dev_kfree_skb(skb); + + ar->net_stats.tx_dropped++; + ar->net_stats.tx_aborted_errors++; + + return 0; +} + +/* indicate tx activity or inactivity on a WMI stream */ +void ath6kl_indicate_tx_activity(void *devt, u8 traffic_class, bool active) +{ + struct ath6kl *ar = devt; + enum htc_endpoint_id eid; + int i; + + eid = ar->ac2ep_map[traffic_class]; + + if (!test_bit(WMI_ENABLED, &ar->flag)) + goto notify_htc; + + spin_lock_bh(&ar->lock); + + ar->ac_stream_active[traffic_class] = active; + + if (active) { + /* + * Keep track of the active stream with the highest + * priority. + */ + if (ar->ac_stream_pri_map[traffic_class] > + ar->hiac_stream_active_pri) + /* set the new highest active priority */ + ar->hiac_stream_active_pri = + ar->ac_stream_pri_map[traffic_class]; + + } else { + /* + * We may have to search for the next active stream + * that is the highest priority. + */ + if (ar->hiac_stream_active_pri == + ar->ac_stream_pri_map[traffic_class]) { + /* + * The highest priority stream just went inactive + * reset and search for the "next" highest "active" + * priority stream. + */ + ar->hiac_stream_active_pri = 0; + + for (i = 0; i < WMM_NUM_AC; i++) { + if (ar->ac_stream_active[i] && + (ar->ac_stream_pri_map[i] > + ar->hiac_stream_active_pri)) + /* + * Set the new highest active + * priority. + */ + ar->hiac_stream_active_pri = + ar->ac_stream_pri_map[i]; + } + } + } + + spin_unlock_bh(&ar->lock); + +notify_htc: + /* notify HTC, this may cause credit distribution changes */ + htc_indicate_activity_change(ar->htc_target, eid, active); +} + +enum htc_send_full_action ath6kl_tx_queue_full(struct htc_target *target, + struct htc_packet *packet) +{ + struct ath6kl *ar = target->dev->ar; + enum htc_endpoint_id endpoint = packet->endpoint; + + if (endpoint == ar->ctrl_ep) { + /* + * Under normal WMI if this is getting full, then something + * is running rampant the host should not be exhausting the + * WMI queue with too many commands the only exception to + * this is during testing using endpointping. + */ + spin_lock_bh(&ar->lock); + set_bit(WMI_CTRL_EP_FULL, &ar->flag); + spin_unlock_bh(&ar->lock); + ath6kl_err("wmi ctrl ep is full\n"); + return HTC_SEND_FULL_KEEP; + } + + if (packet->info.tx.tag == ATH6KL_CONTROL_PKT_TAG) + return HTC_SEND_FULL_KEEP; + + if (ar->nw_type == ADHOC_NETWORK) + /* + * In adhoc mode, we cannot differentiate traffic + * priorities so there is no need to continue, however we + * should stop the network. + */ + goto stop_net_queues; + + /* + * The last MAX_HI_COOKIE_NUM "batch" of cookies are reserved for + * the highest active stream. + */ + if (ar->ac_stream_pri_map[ar->ep2ac_map[endpoint]] < + ar->hiac_stream_active_pri && + ar->cookie_count <= MAX_HI_COOKIE_NUM) + /* + * Give preference to the highest priority stream by + * dropping the packets which overflowed. + */ + return HTC_SEND_FULL_DROP; + +stop_net_queues: + spin_lock_bh(&ar->lock); + set_bit(NETQ_STOPPED, &ar->flag); + spin_unlock_bh(&ar->lock); + netif_stop_queue(ar->net_dev); + + return HTC_SEND_FULL_KEEP; +} + +/* TODO this needs to be looked at */ +static void ath6kl_tx_clear_node_map(struct ath6kl *ar, + enum htc_endpoint_id eid, u32 map_no) +{ + u32 i; + + if (ar->nw_type != ADHOC_NETWORK) + return; + + if (!ar->ibss_ps_enable) + return; + + if (eid == ar->ctrl_ep) + return; + + if (map_no == 0) + return; + + map_no--; + ar->node_map[map_no].tx_pend--; + + if (ar->node_map[map_no].tx_pend) + return; + + if (map_no != (ar->node_num - 1)) + return; + + for (i = ar->node_num; i > 0; i--) { + if (ar->node_map[i - 1].tx_pend) + break; + + memset(&ar->node_map[i - 1], 0, + sizeof(struct ath6kl_node_mapping)); + ar->node_num--; + } +} + +void ath6kl_tx_complete(void *context, struct list_head *packet_queue) +{ + struct ath6kl *ar = context; + struct sk_buff_head skb_queue; + struct htc_packet *packet; + struct sk_buff *skb; + struct ath6kl_cookie *ath6kl_cookie; + u32 map_no = 0; + int status; + enum htc_endpoint_id eid; + bool wake_event = false; + bool flushing = false; + + skb_queue_head_init(&skb_queue); + + /* lock the driver as we update internal state */ + spin_lock_bh(&ar->lock); + + /* reap completed packets */ + while (!list_empty(packet_queue)) { + + packet = list_first_entry(packet_queue, struct htc_packet, + list); + list_del(&packet->list); + + ath6kl_cookie = (struct ath6kl_cookie *)packet->pkt_cntxt; + if (!ath6kl_cookie) + goto fatal; + + status = packet->status; + skb = ath6kl_cookie->skb; + eid = packet->endpoint; + map_no = ath6kl_cookie->map_no; + + if (!skb || !skb->data) + goto fatal; + + packet->buf = skb->data; + + __skb_queue_tail(&skb_queue, skb); + + if (!status && (packet->act_len != skb->len)) + goto fatal; + + ar->tx_pending[eid]--; + + if (eid != ar->ctrl_ep) + ar->total_tx_data_pend--; + + if (eid == ar->ctrl_ep) { + if (test_bit(WMI_CTRL_EP_FULL, &ar->flag)) + clear_bit(WMI_CTRL_EP_FULL, &ar->flag); + + if (ar->tx_pending[eid] == 0) + wake_event = true; + } + + if (status) { + if (status == -ECANCELED) + /* a packet was flushed */ + flushing = true; + + ar->net_stats.tx_errors++; + + if (status != -ENOSPC) + ath6kl_err("tx error, status: 0x%x\n", status); + ath6kl_dbg(ATH6KL_DBG_WLAN_TX, + "%s: skb=0x%p data=0x%p len=0x%x eid=%d %s\n", + __func__, skb, packet->buf, packet->act_len, + eid, "error!"); + } else { + ath6kl_dbg(ATH6KL_DBG_WLAN_TX, + "%s: skb=0x%p data=0x%p len=0x%x eid=%d %s\n", + __func__, skb, packet->buf, packet->act_len, + eid, "OK"); + + flushing = false; + ar->net_stats.tx_packets++; + ar->net_stats.tx_bytes += skb->len; + } + + ath6kl_tx_clear_node_map(ar, eid, map_no); + + ath6kl_free_cookie(ar, ath6kl_cookie); + + if (test_bit(NETQ_STOPPED, &ar->flag)) + clear_bit(NETQ_STOPPED, &ar->flag); + } + + spin_unlock_bh(&ar->lock); + + __skb_queue_purge(&skb_queue); + + if (test_bit(CONNECTED, &ar->flag)) { + if (!flushing) + netif_wake_queue(ar->net_dev); + } + + if (wake_event) + wake_up(&ar->event_wq); + + return; + +fatal: + WARN_ON(1); + spin_unlock_bh(&ar->lock); + return; +} + +void ath6kl_tx_data_cleanup(struct ath6kl *ar) +{ + int i; + + /* flush all the data (non-control) streams */ + for (i = 0; i < WMM_NUM_AC; i++) + htc_flush_txep(ar->htc_target, ar->ac2ep_map[i], + ATH6KL_DATA_PKT_TAG); +} + +/* Rx functions */ + +static void ath6kl_deliver_frames_to_nw_stack(struct net_device *dev, + struct sk_buff *skb) +{ + if (!skb) + return; + + skb->dev = dev; + + if (!(skb->dev->flags & IFF_UP)) { + dev_kfree_skb(skb); + return; + } + + skb->protocol = eth_type_trans(skb, skb->dev); + + netif_rx_ni(skb); +} + +static void ath6kl_alloc_netbufs(struct sk_buff_head *q, u16 num) +{ + struct sk_buff *skb; + + while (num) { + skb = ath6kl_buf_alloc(ATH6KL_BUFFER_SIZE); + if (!skb) { + ath6kl_err("netbuf allocation failed\n"); + return; + } + skb_queue_tail(q, skb); + num--; + } +} + +static struct sk_buff *aggr_get_free_skb(struct aggr_info *p_aggr) +{ + struct sk_buff *skb = NULL; + + if (skb_queue_len(&p_aggr->free_q) < (AGGR_NUM_OF_FREE_NETBUFS >> 2)) + ath6kl_alloc_netbufs(&p_aggr->free_q, AGGR_NUM_OF_FREE_NETBUFS); + + skb = skb_dequeue(&p_aggr->free_q); + + return skb; +} + +void ath6kl_rx_refill(struct htc_target *target, enum htc_endpoint_id endpoint) +{ + struct ath6kl *ar = target->dev->ar; + struct sk_buff *skb; + int rx_buf; + int n_buf_refill; + struct htc_packet *packet; + struct list_head queue; + + n_buf_refill = ATH6KL_MAX_RX_BUFFERS - + htc_get_rxbuf_num(ar->htc_target, endpoint); + + if (n_buf_refill <= 0) + return; + + INIT_LIST_HEAD(&queue); + + ath6kl_dbg(ATH6KL_DBG_WLAN_RX, + "%s: providing htc with %d buffers at eid=%d\n", + __func__, n_buf_refill, endpoint); + + for (rx_buf = 0; rx_buf < n_buf_refill; rx_buf++) { + skb = ath6kl_buf_alloc(ATH6KL_BUFFER_SIZE); + if (!skb) + break; + + packet = (struct htc_packet *) skb->head; + set_htc_rxpkt_info(packet, skb, skb->data, + ATH6KL_BUFFER_SIZE, endpoint); + list_add_tail(&packet->list, &queue); + } + + if (!list_empty(&queue)) + htc_add_rxbuf_multiple(ar->htc_target, &queue); +} + +void ath6kl_refill_amsdu_rxbufs(struct ath6kl *ar, int count) +{ + struct htc_packet *packet; + struct sk_buff *skb; + + while (count) { + skb = ath6kl_buf_alloc(ATH6KL_AMSDU_BUFFER_SIZE); + if (!skb) + return; + + packet = (struct htc_packet *) skb->head; + set_htc_rxpkt_info(packet, skb, skb->data, + ATH6KL_AMSDU_BUFFER_SIZE, 0); + spin_lock_bh(&ar->lock); + list_add_tail(&packet->list, &ar->amsdu_rx_buffer_queue); + spin_unlock_bh(&ar->lock); + count--; + } +} + +/* + * Callback to allocate a receive buffer for a pending packet. We use a + * pre-allocated list of buffers of maximum AMSDU size (4K). + */ +struct htc_packet *ath6kl_alloc_amsdu_rxbuf(struct htc_target *target, + enum htc_endpoint_id endpoint, + int len) +{ + struct ath6kl *ar = target->dev->ar; + struct htc_packet *packet = NULL; + struct list_head *pkt_pos; + int refill_cnt = 0, depth = 0; + + ath6kl_dbg(ATH6KL_DBG_WLAN_RX, "%s: eid=%d, len:%d\n", + __func__, endpoint, len); + + if ((len <= ATH6KL_BUFFER_SIZE) || + (len > ATH6KL_AMSDU_BUFFER_SIZE)) + return NULL; + + spin_lock_bh(&ar->lock); + + if (list_empty(&ar->amsdu_rx_buffer_queue)) { + spin_unlock_bh(&ar->lock); + refill_cnt = ATH6KL_MAX_AMSDU_RX_BUFFERS; + goto refill_buf; + } + + packet = list_first_entry(&ar->amsdu_rx_buffer_queue, + struct htc_packet, list); + list_del(&packet->list); + list_for_each(pkt_pos, &ar->amsdu_rx_buffer_queue) + depth++; + + refill_cnt = ATH6KL_MAX_AMSDU_RX_BUFFERS - depth; + spin_unlock_bh(&ar->lock); + + /* set actual endpoint ID */ + packet->endpoint = endpoint; + +refill_buf: + if (refill_cnt >= ATH6KL_AMSDU_REFILL_THRESHOLD) + ath6kl_refill_amsdu_rxbufs(ar, refill_cnt); + + return packet; +} + +static void aggr_slice_amsdu(struct aggr_info *p_aggr, + struct rxtid *rxtid, struct sk_buff *skb) +{ + struct sk_buff *new_skb; + struct ethhdr *hdr; + u16 frame_8023_len, payload_8023_len, mac_hdr_len, amsdu_len; + u8 *framep; + + mac_hdr_len = sizeof(struct ethhdr); + framep = skb->data + mac_hdr_len; + amsdu_len = skb->len - mac_hdr_len; + + while (amsdu_len > mac_hdr_len) { + hdr = (struct ethhdr *) framep; + payload_8023_len = ntohs(hdr->h_proto); + + if (payload_8023_len < MIN_MSDU_SUBFRAME_PAYLOAD_LEN || + payload_8023_len > MAX_MSDU_SUBFRAME_PAYLOAD_LEN) { + ath6kl_err("802.3 AMSDU frame bound check failed. len %d\n", + payload_8023_len); + break; + } + + frame_8023_len = payload_8023_len + mac_hdr_len; + new_skb = aggr_get_free_skb(p_aggr); + if (!new_skb) { + ath6kl_err("no buffer available\n"); + break; + } + + memcpy(new_skb->data, framep, frame_8023_len); + skb_put(new_skb, frame_8023_len); + if (ath6kl_wmi_dot3_2_dix(new_skb)) { + ath6kl_err("dot3_2_dix error\n"); + dev_kfree_skb(new_skb); + break; + } + + skb_queue_tail(&rxtid->q, new_skb); + + /* Is this the last subframe within this aggregate ? */ + if ((amsdu_len - frame_8023_len) == 0) + break; + + /* Add the length of A-MSDU subframe padding bytes - + * Round to nearest word. + */ + frame_8023_len = ALIGN(frame_8023_len + 3, 3); + + framep += frame_8023_len; + amsdu_len -= frame_8023_len; + } + + dev_kfree_skb(skb); +} + +static void aggr_deque_frms(struct aggr_info *p_aggr, u8 tid, + u16 seq_no, u8 order) +{ + struct sk_buff *skb; + struct rxtid *rxtid; + struct skb_hold_q *node; + u16 idx, idx_end, seq_end; + struct rxtid_stats *stats; + + if (!p_aggr) + return; + + rxtid = &p_aggr->rx_tid[tid]; + stats = &p_aggr->stat[tid]; + + idx = AGGR_WIN_IDX(rxtid->seq_next, rxtid->hold_q_sz); + + /* + * idx_end is typically the last possible frame in the window, + * but changes to 'the' seq_no, when BAR comes. If seq_no + * is non-zero, we will go up to that and stop. + * Note: last seq no in current window will occupy the same + * index position as index that is just previous to start. + * An imp point : if win_sz is 7, for seq_no space of 4095, + * then, there would be holes when sequence wrap around occurs. + * Target should judiciously choose the win_sz, based on + * this condition. For 4095, (TID_WINDOW_SZ = 2 x win_sz + * 2, 4, 8, 16 win_sz works fine). + * We must deque from "idx" to "idx_end", including both. + */ + seq_end = seq_no ? seq_no : rxtid->seq_next; + idx_end = AGGR_WIN_IDX(seq_end, rxtid->hold_q_sz); + + spin_lock_bh(&rxtid->lock); + + do { + node = &rxtid->hold_q[idx]; + if ((order == 1) && (!node->skb)) + break; + + if (node->skb) { + if (node->is_amsdu) + aggr_slice_amsdu(p_aggr, rxtid, node->skb); + else + skb_queue_tail(&rxtid->q, node->skb); + node->skb = NULL; + } else + stats->num_hole++; + + rxtid->seq_next = ATH6KL_NEXT_SEQ_NO(rxtid->seq_next); + idx = AGGR_WIN_IDX(rxtid->seq_next, rxtid->hold_q_sz); + } while (idx != idx_end); + + spin_unlock_bh(&rxtid->lock); + + stats->num_delivered += skb_queue_len(&rxtid->q); + + while ((skb = skb_dequeue(&rxtid->q))) + ath6kl_deliver_frames_to_nw_stack(p_aggr->dev, skb); +} + +static bool aggr_process_recv_frm(struct aggr_info *agg_info, u8 tid, + u16 seq_no, + bool is_amsdu, struct sk_buff *frame) +{ + struct rxtid *rxtid; + struct rxtid_stats *stats; + struct sk_buff *skb; + struct skb_hold_q *node; + u16 idx, st, cur, end; + bool is_queued = false; + u16 extended_end; + + rxtid = &agg_info->rx_tid[tid]; + stats = &agg_info->stat[tid]; + + stats->num_into_aggr++; + + if (!rxtid->aggr) { + if (is_amsdu) { + aggr_slice_amsdu(agg_info, rxtid, frame); + is_queued = true; + stats->num_amsdu++; + while ((skb = skb_dequeue(&rxtid->q))) + ath6kl_deliver_frames_to_nw_stack(agg_info->dev, + skb); + } + return is_queued; + } + + /* Check the incoming sequence no, if it's in the window */ + st = rxtid->seq_next; + cur = seq_no; + end = (st + rxtid->hold_q_sz-1) & ATH6KL_MAX_SEQ_NO; + + if (((st < end) && (cur < st || cur > end)) || + ((st > end) && (cur > end) && (cur < st))) { + extended_end = (end + rxtid->hold_q_sz - 1) & + ATH6KL_MAX_SEQ_NO; + + if (((end < extended_end) && + (cur < end || cur > extended_end)) || + ((end > extended_end) && (cur > extended_end) && + (cur < end))) { + aggr_deque_frms(agg_info, tid, 0, 0); + if (cur >= rxtid->hold_q_sz - 1) + rxtid->seq_next = cur - (rxtid->hold_q_sz - 1); + else + rxtid->seq_next = ATH6KL_MAX_SEQ_NO - + (rxtid->hold_q_sz - 2 - cur); + } else { + /* + * Dequeue only those frames that are outside the + * new shifted window. + */ + if (cur >= rxtid->hold_q_sz - 1) + st = cur - (rxtid->hold_q_sz - 1); + else + st = ATH6KL_MAX_SEQ_NO - + (rxtid->hold_q_sz - 2 - cur); + + aggr_deque_frms(agg_info, tid, st, 0); + } + + stats->num_oow++; + } + + idx = AGGR_WIN_IDX(seq_no, rxtid->hold_q_sz); + + node = &rxtid->hold_q[idx]; + + spin_lock_bh(&rxtid->lock); + + /* + * Is the cur frame duplicate or something beyond our window(hold_q + * -> which is 2x, already)? + * + * 1. Duplicate is easy - drop incoming frame. + * 2. Not falling in current sliding window. + * 2a. is the frame_seq_no preceding current tid_seq_no? + * -> drop the frame. perhaps sender did not get our ACK. + * this is taken care of above. + * 2b. is the frame_seq_no beyond window(st, TID_WINDOW_SZ); + * -> Taken care of it above, by moving window forward. + */ + dev_kfree_skb(node->skb); + stats->num_dups++; + + node->skb = frame; + is_queued = true; + node->is_amsdu = is_amsdu; + node->seq_no = seq_no; + + if (node->is_amsdu) + stats->num_amsdu++; + else + stats->num_mpdu++; + + spin_unlock_bh(&rxtid->lock); + + aggr_deque_frms(agg_info, tid, 0, 1); + + if (agg_info->timer_scheduled) + rxtid->progress = true; + else + for (idx = 0 ; idx < rxtid->hold_q_sz; idx++) { + if (rxtid->hold_q[idx].skb) { + /* + * There is a frame in the queue and no + * timer so start a timer to ensure that + * the frame doesn't remain stuck + * forever. + */ + agg_info->timer_scheduled = true; + mod_timer(&agg_info->timer, + (jiffies + + HZ * (AGGR_RX_TIMEOUT) / 1000)); + rxtid->progress = false; + rxtid->timer_mon = true; + break; + } + } + + return is_queued; +} + +void ath6kl_rx(struct htc_target *target, struct htc_packet *packet) +{ + struct ath6kl *ar = target->dev->ar; + struct sk_buff *skb = packet->pkt_cntxt; + struct wmi_rx_meta_v2 *meta; + struct wmi_data_hdr *dhdr; + int min_hdr_len; + u8 meta_type, dot11_hdr = 0; + int status = packet->status; + enum htc_endpoint_id ept = packet->endpoint; + bool is_amsdu, prev_ps, ps_state = false; + struct ath6kl_sta *conn = NULL; + struct sk_buff *skb1 = NULL; + struct ethhdr *datap = NULL; + u16 seq_no, offset; + u8 tid; + + ath6kl_dbg(ATH6KL_DBG_WLAN_RX, + "%s: ar=0x%p eid=%d, skb=0x%p, data=0x%p, len=0x%x status:%d", + __func__, ar, ept, skb, packet->buf, + packet->act_len, status); + + if (status || !(skb->data + HTC_HDR_LENGTH)) { + ar->net_stats.rx_errors++; + dev_kfree_skb(skb); + return; + } + + /* + * Take lock to protect buffer counts and adaptive power throughput + * state. + */ + spin_lock_bh(&ar->lock); + + ar->net_stats.rx_packets++; + ar->net_stats.rx_bytes += packet->act_len; + + skb_put(skb, packet->act_len + HTC_HDR_LENGTH); + skb_pull(skb, HTC_HDR_LENGTH); + + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, __func__, skb->data, skb->len); + + spin_unlock_bh(&ar->lock); + + skb->dev = ar->net_dev; + + if (!test_bit(WMI_ENABLED, &ar->flag)) { + if (EPPING_ALIGNMENT_PAD > 0) + skb_pull(skb, EPPING_ALIGNMENT_PAD); + ath6kl_deliver_frames_to_nw_stack(ar->net_dev, skb); + return; + } + + if (ept == ar->ctrl_ep) { + ath6kl_wmi_control_rx(ar->wmi, skb); + return; + } + + min_hdr_len = sizeof(struct ethhdr); + min_hdr_len += sizeof(struct wmi_data_hdr) + + sizeof(struct ath6kl_llc_snap_hdr); + + dhdr = (struct wmi_data_hdr *) skb->data; + + /* + * In the case of AP mode we may receive NULL data frames + * that do not have LLC hdr. They are 16 bytes in size. + * Allow these frames in the AP mode. + */ + if (ar->nw_type != AP_NETWORK && + ((packet->act_len < min_hdr_len) || + (packet->act_len > WMI_MAX_AMSDU_RX_DATA_FRAME_LENGTH))) { + ath6kl_info("frame len is too short or too long\n"); + ar->net_stats.rx_errors++; + ar->net_stats.rx_length_errors++; + dev_kfree_skb(skb); + return; + } + + /* Get the Power save state of the STA */ + if (ar->nw_type == AP_NETWORK) { + meta_type = wmi_data_hdr_get_meta(dhdr); + + ps_state = !!((dhdr->info >> WMI_DATA_HDR_PS_SHIFT) & + WMI_DATA_HDR_PS_MASK); + + offset = sizeof(struct wmi_data_hdr); + + switch (meta_type) { + case 0: + break; + case WMI_META_VERSION_1: + offset += sizeof(struct wmi_rx_meta_v1); + break; + case WMI_META_VERSION_2: + offset += sizeof(struct wmi_rx_meta_v2); + break; + default: + break; + } + + datap = (struct ethhdr *) (skb->data + offset); + conn = ath6kl_find_sta(ar, datap->h_source); + + if (!conn) { + dev_kfree_skb(skb); + return; + } + + /* + * If there is a change in PS state of the STA, + * take appropriate steps: + * + * 1. If Sleep-->Awake, flush the psq for the STA + * Clear the PVB for the STA. + * 2. If Awake-->Sleep, Starting queueing frames + * the STA. + */ + prev_ps = !!(conn->sta_flags & STA_PS_SLEEP); + + if (ps_state) + conn->sta_flags |= STA_PS_SLEEP; + else + conn->sta_flags &= ~STA_PS_SLEEP; + + if (prev_ps ^ !!(conn->sta_flags & STA_PS_SLEEP)) { + if (!(conn->sta_flags & STA_PS_SLEEP)) { + struct sk_buff *skbuff = NULL; + + spin_lock_bh(&conn->psq_lock); + while ((skbuff = skb_dequeue(&conn->psq)) + != NULL) { + spin_unlock_bh(&conn->psq_lock); + ath6kl_data_tx(skbuff, ar->net_dev); + spin_lock_bh(&conn->psq_lock); + } + spin_unlock_bh(&conn->psq_lock); + /* Clear the PVB for this STA */ + ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); + } + } + + /* drop NULL data frames here */ + if ((packet->act_len < min_hdr_len) || + (packet->act_len > + WMI_MAX_AMSDU_RX_DATA_FRAME_LENGTH)) { + dev_kfree_skb(skb); + return; + } + } + + is_amsdu = wmi_data_hdr_is_amsdu(dhdr) ? true : false; + tid = wmi_data_hdr_get_up(dhdr); + seq_no = wmi_data_hdr_get_seqno(dhdr); + meta_type = wmi_data_hdr_get_meta(dhdr); + dot11_hdr = wmi_data_hdr_get_dot11(dhdr); + + ath6kl_wmi_data_hdr_remove(ar->wmi, skb); + + switch (meta_type) { + case WMI_META_VERSION_1: + skb_pull(skb, sizeof(struct wmi_rx_meta_v1)); + break; + case WMI_META_VERSION_2: + meta = (struct wmi_rx_meta_v2 *) skb->data; + if (meta->csum_flags & 0x1) { + skb->ip_summed = CHECKSUM_COMPLETE; + skb->csum = (__force __wsum) meta->csum; + } + skb_pull(skb, sizeof(struct wmi_rx_meta_v2)); + break; + default: + break; + } + + if (dot11_hdr) + status = ath6kl_wmi_dot11_hdr_remove(ar->wmi, skb); + else if (!is_amsdu) + status = ath6kl_wmi_dot3_2_dix(skb); + + if (status) { + /* + * Drop frames that could not be processed (lack of + * memory, etc.) + */ + dev_kfree_skb(skb); + return; + } + + if (!(ar->net_dev->flags & IFF_UP)) { + dev_kfree_skb(skb); + return; + } + + if (ar->nw_type == AP_NETWORK) { + datap = (struct ethhdr *) skb->data; + if (is_multicast_ether_addr(datap->h_dest)) + /* + * Bcast/Mcast frames should be sent to the + * OS stack as well as on the air. + */ + skb1 = skb_copy(skb, GFP_ATOMIC); + else { + /* + * Search for a connected STA with dstMac + * as the Mac address. If found send the + * frame to it on the air else send the + * frame up the stack. + */ + struct ath6kl_sta *conn = NULL; + conn = ath6kl_find_sta(ar, datap->h_dest); + + if (conn && ar->intra_bss) { + skb1 = skb; + skb = NULL; + } else if (conn && !ar->intra_bss) { + dev_kfree_skb(skb); + skb = NULL; + } + } + if (skb1) + ath6kl_data_tx(skb1, ar->net_dev); + } + + if (!aggr_process_recv_frm(ar->aggr_cntxt, tid, seq_no, + is_amsdu, skb)) + ath6kl_deliver_frames_to_nw_stack(ar->net_dev, skb); +} + +static void aggr_timeout(unsigned long arg) +{ + u8 i, j; + struct aggr_info *p_aggr = (struct aggr_info *) arg; + struct rxtid *rxtid; + struct rxtid_stats *stats; + + for (i = 0; i < NUM_OF_TIDS; i++) { + rxtid = &p_aggr->rx_tid[i]; + stats = &p_aggr->stat[i]; + + if (!rxtid->aggr || !rxtid->timer_mon || rxtid->progress) + continue; + + stats->num_timeouts++; + ath6kl_err("aggr timeout (st %d end %d)\n", + rxtid->seq_next, + ((rxtid->seq_next + rxtid->hold_q_sz-1) & + ATH6KL_MAX_SEQ_NO)); + aggr_deque_frms(p_aggr, i, 0, 0); + } + + p_aggr->timer_scheduled = false; + + for (i = 0; i < NUM_OF_TIDS; i++) { + rxtid = &p_aggr->rx_tid[i]; + + if (rxtid->aggr && rxtid->hold_q) { + for (j = 0; j < rxtid->hold_q_sz; j++) { + if (rxtid->hold_q[j].skb) { + p_aggr->timer_scheduled = true; + rxtid->timer_mon = true; + rxtid->progress = false; + break; + } + } + + if (j >= rxtid->hold_q_sz) + rxtid->timer_mon = false; + } + } + + if (p_aggr->timer_scheduled) + mod_timer(&p_aggr->timer, + jiffies + msecs_to_jiffies(AGGR_RX_TIMEOUT)); +} + +static void aggr_delete_tid_state(struct aggr_info *p_aggr, u8 tid) +{ + struct rxtid *rxtid; + struct rxtid_stats *stats; + + if (!p_aggr || tid >= NUM_OF_TIDS) + return; + + rxtid = &p_aggr->rx_tid[tid]; + stats = &p_aggr->stat[tid]; + + if (rxtid->aggr) + aggr_deque_frms(p_aggr, tid, 0, 0); + + rxtid->aggr = false; + rxtid->progress = false; + rxtid->timer_mon = false; + rxtid->win_sz = 0; + rxtid->seq_next = 0; + rxtid->hold_q_sz = 0; + + kfree(rxtid->hold_q); + rxtid->hold_q = NULL; + + memset(stats, 0, sizeof(struct rxtid_stats)); +} + +void aggr_recv_addba_req_evt(struct ath6kl *ar, u8 tid, u16 seq_no, u8 win_sz) +{ + struct aggr_info *p_aggr = ar->aggr_cntxt; + struct rxtid *rxtid; + struct rxtid_stats *stats; + u16 hold_q_size; + + if (!p_aggr) + return; + + rxtid = &p_aggr->rx_tid[tid]; + stats = &p_aggr->stat[tid]; + + if (win_sz < AGGR_WIN_SZ_MIN || win_sz > AGGR_WIN_SZ_MAX) + ath6kl_dbg(ATH6KL_DBG_WLAN_RX, "%s: win_sz %d, tid %d\n", + __func__, win_sz, tid); + + if (rxtid->aggr) + aggr_delete_tid_state(p_aggr, tid); + + rxtid->seq_next = seq_no; + hold_q_size = TID_WINDOW_SZ(win_sz) * sizeof(struct skb_hold_q); + rxtid->hold_q = kzalloc(hold_q_size, GFP_KERNEL); + if (!rxtid->hold_q) + return; + + rxtid->win_sz = win_sz; + rxtid->hold_q_sz = TID_WINDOW_SZ(win_sz); + if (!skb_queue_empty(&rxtid->q)) + return; + + rxtid->aggr = true; +} + +struct aggr_info *aggr_init(struct net_device *dev) +{ + struct aggr_info *p_aggr = NULL; + struct rxtid *rxtid; + u8 i; + + p_aggr = kzalloc(sizeof(struct aggr_info), GFP_KERNEL); + if (!p_aggr) { + ath6kl_err("failed to alloc memory for aggr_node\n"); + return NULL; + } + + p_aggr->aggr_sz = AGGR_SZ_DEFAULT; + p_aggr->dev = dev; + init_timer(&p_aggr->timer); + p_aggr->timer.function = aggr_timeout; + p_aggr->timer.data = (unsigned long) p_aggr; + + p_aggr->timer_scheduled = false; + skb_queue_head_init(&p_aggr->free_q); + + ath6kl_alloc_netbufs(&p_aggr->free_q, AGGR_NUM_OF_FREE_NETBUFS); + + for (i = 0; i < NUM_OF_TIDS; i++) { + rxtid = &p_aggr->rx_tid[i]; + rxtid->aggr = false; + rxtid->progress = false; + rxtid->timer_mon = false; + skb_queue_head_init(&rxtid->q); + spin_lock_init(&rxtid->lock); + } + + return p_aggr; +} + +void aggr_recv_delba_req_evt(struct ath6kl *ar, u8 tid) +{ + struct aggr_info *p_aggr = ar->aggr_cntxt; + struct rxtid *rxtid; + + if (!p_aggr) + return; + + rxtid = &p_aggr->rx_tid[tid]; + + if (rxtid->aggr) + aggr_delete_tid_state(p_aggr, tid); +} + +void aggr_reset_state(struct aggr_info *aggr_info) +{ + u8 tid; + + for (tid = 0; tid < NUM_OF_TIDS; tid++) + aggr_delete_tid_state(aggr_info, tid); +} + +/* clean up our amsdu buffer list */ +void ath6kl_cleanup_amsdu_rxbufs(struct ath6kl *ar) +{ + struct htc_packet *packet, *tmp_pkt; + + spin_lock_bh(&ar->lock); + if (list_empty(&ar->amsdu_rx_buffer_queue)) { + spin_unlock_bh(&ar->lock); + return; + } + + list_for_each_entry_safe(packet, tmp_pkt, &ar->amsdu_rx_buffer_queue, + list) { + list_del(&packet->list); + spin_unlock_bh(&ar->lock); + dev_kfree_skb(packet->pkt_cntxt); + spin_lock_bh(&ar->lock); + } + + spin_unlock_bh(&ar->lock); +} + +void aggr_module_destroy(struct aggr_info *aggr_info) +{ + struct rxtid *rxtid; + u8 i, k; + + if (!aggr_info) + return; + + if (aggr_info->timer_scheduled) { + del_timer(&aggr_info->timer); + aggr_info->timer_scheduled = false; + } + + for (i = 0; i < NUM_OF_TIDS; i++) { + rxtid = &aggr_info->rx_tid[i]; + if (rxtid->hold_q) { + for (k = 0; k < rxtid->hold_q_sz; k++) + dev_kfree_skb(rxtid->hold_q[k].skb); + kfree(rxtid->hold_q); + } + + skb_queue_purge(&rxtid->q); + } + + skb_queue_purge(&aggr_info->free_q); + kfree(aggr_info); +} diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c new file mode 100644 index 000000000000..a52d7d201fbd --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/wmi.c @@ -0,0 +1,2762 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/ip.h> +#include "core.h" +#include "debug.h" + +static int ath6kl_wmi_sync_point(struct wmi *wmi); + +static const s32 wmi_rate_tbl[][2] = { + /* {W/O SGI, with SGI} */ + {1000, 1000}, + {2000, 2000}, + {5500, 5500}, + {11000, 11000}, + {6000, 6000}, + {9000, 9000}, + {12000, 12000}, + {18000, 18000}, + {24000, 24000}, + {36000, 36000}, + {48000, 48000}, + {54000, 54000}, + {6500, 7200}, + {13000, 14400}, + {19500, 21700}, + {26000, 28900}, + {39000, 43300}, + {52000, 57800}, + {58500, 65000}, + {65000, 72200}, + {13500, 15000}, + {27000, 30000}, + {40500, 45000}, + {54000, 60000}, + {81000, 90000}, + {108000, 120000}, + {121500, 135000}, + {135000, 150000}, + {0, 0} +}; + +/* 802.1d to AC mapping. Refer pg 57 of WMM-test-plan-v1.2 */ +static const u8 up_to_ac[] = { + WMM_AC_BE, + WMM_AC_BK, + WMM_AC_BK, + WMM_AC_BE, + WMM_AC_VI, + WMM_AC_VI, + WMM_AC_VO, + WMM_AC_VO, +}; + +void ath6kl_wmi_set_control_ep(struct wmi *wmi, enum htc_endpoint_id ep_id) +{ + if (WARN_ON(ep_id == ENDPOINT_UNUSED || ep_id >= ENDPOINT_MAX)) + return; + + wmi->ep_id = ep_id; +} + +enum htc_endpoint_id ath6kl_wmi_get_control_ep(struct wmi *wmi) +{ + return wmi->ep_id; +} + +/* Performs DIX to 802.3 encapsulation for transmit packets. + * Assumes the entire DIX header is contigous and that there is + * enough room in the buffer for a 802.3 mac header and LLC+SNAP headers. + */ +int ath6kl_wmi_dix_2_dot3(struct wmi *wmi, struct sk_buff *skb) +{ + struct ath6kl_llc_snap_hdr *llc_hdr; + struct ethhdr *eth_hdr; + size_t new_len; + __be16 type; + u8 *datap; + u16 size; + + if (WARN_ON(skb == NULL)) + return -EINVAL; + + size = sizeof(struct ath6kl_llc_snap_hdr) + sizeof(struct wmi_data_hdr); + if (skb_headroom(skb) < size) + return -ENOMEM; + + eth_hdr = (struct ethhdr *) skb->data; + type = eth_hdr->h_proto; + + if (!is_ethertype(be16_to_cpu(type))) { + ath6kl_dbg(ATH6KL_DBG_WMI, + "%s: pkt is already in 802.3 format\n", __func__); + return 0; + } + + new_len = skb->len - sizeof(*eth_hdr) + sizeof(*llc_hdr); + + skb_push(skb, sizeof(struct ath6kl_llc_snap_hdr)); + datap = skb->data; + + eth_hdr->h_proto = cpu_to_be16(new_len); + + memcpy(datap, eth_hdr, sizeof(*eth_hdr)); + + llc_hdr = (struct ath6kl_llc_snap_hdr *)(datap + sizeof(*eth_hdr)); + llc_hdr->dsap = 0xAA; + llc_hdr->ssap = 0xAA; + llc_hdr->cntl = 0x03; + llc_hdr->org_code[0] = 0x0; + llc_hdr->org_code[1] = 0x0; + llc_hdr->org_code[2] = 0x0; + llc_hdr->eth_type = type; + + return 0; +} + +static int ath6kl_wmi_meta_add(struct wmi *wmi, struct sk_buff *skb, + u8 *version, void *tx_meta_info) +{ + struct wmi_tx_meta_v1 *v1; + struct wmi_tx_meta_v2 *v2; + + if (WARN_ON(skb == NULL || version == NULL)) + return -EINVAL; + + switch (*version) { + case WMI_META_VERSION_1: + skb_push(skb, WMI_MAX_TX_META_SZ); + v1 = (struct wmi_tx_meta_v1 *) skb->data; + v1->pkt_id = 0; + v1->rate_plcy_id = 0; + *version = WMI_META_VERSION_1; + break; + case WMI_META_VERSION_2: + skb_push(skb, WMI_MAX_TX_META_SZ); + v2 = (struct wmi_tx_meta_v2 *) skb->data; + memcpy(v2, (struct wmi_tx_meta_v2 *) tx_meta_info, + sizeof(struct wmi_tx_meta_v2)); + break; + } + + return 0; +} + +int ath6kl_wmi_data_hdr_add(struct wmi *wmi, struct sk_buff *skb, + u8 msg_type, bool more_data, + enum wmi_data_hdr_data_type data_type, + u8 meta_ver, void *tx_meta_info) +{ + struct wmi_data_hdr *data_hdr; + int ret; + + if (WARN_ON(skb == NULL)) + return -EINVAL; + + ret = ath6kl_wmi_meta_add(wmi, skb, &meta_ver, tx_meta_info); + if (ret) + return ret; + + skb_push(skb, sizeof(struct wmi_data_hdr)); + + data_hdr = (struct wmi_data_hdr *)skb->data; + memset(data_hdr, 0, sizeof(struct wmi_data_hdr)); + + data_hdr->info = msg_type << WMI_DATA_HDR_MSG_TYPE_SHIFT; + data_hdr->info |= data_type << WMI_DATA_HDR_DATA_TYPE_SHIFT; + + if (more_data) + data_hdr->info |= + WMI_DATA_HDR_MORE_MASK << WMI_DATA_HDR_MORE_SHIFT; + + data_hdr->info2 = cpu_to_le16(meta_ver << WMI_DATA_HDR_META_SHIFT); + data_hdr->info3 = 0; + + return 0; +} + +static u8 ath6kl_wmi_determine_user_priority(u8 *pkt, u32 layer2_pri) +{ + struct iphdr *ip_hdr = (struct iphdr *) pkt; + u8 ip_pri; + + /* + * Determine IPTOS priority + * + * IP-TOS - 8bits + * : DSCP(6-bits) ECN(2-bits) + * : DSCP - P2 P1 P0 X X X + * where (P2 P1 P0) form 802.1D + */ + ip_pri = ip_hdr->tos >> 5; + ip_pri &= 0x7; + + if ((layer2_pri & 0x7) > ip_pri) + return (u8) layer2_pri & 0x7; + else + return ip_pri; +} + +int ath6kl_wmi_implicit_create_pstream(struct wmi *wmi, struct sk_buff *skb, + u32 layer2_priority, bool wmm_enabled, + u8 *ac) +{ + struct wmi_data_hdr *data_hdr; + struct ath6kl_llc_snap_hdr *llc_hdr; + struct wmi_create_pstream_cmd cmd; + u32 meta_size, hdr_size; + u16 ip_type = IP_ETHERTYPE; + u8 stream_exist, usr_pri; + u8 traffic_class = WMM_AC_BE; + u8 *datap; + + if (WARN_ON(skb == NULL)) + return -EINVAL; + + datap = skb->data; + data_hdr = (struct wmi_data_hdr *) datap; + + meta_size = ((le16_to_cpu(data_hdr->info2) >> WMI_DATA_HDR_META_SHIFT) & + WMI_DATA_HDR_META_MASK) ? WMI_MAX_TX_META_SZ : 0; + + if (!wmm_enabled) { + /* If WMM is disabled all traffic goes as BE traffic */ + usr_pri = 0; + } else { + hdr_size = sizeof(struct ethhdr); + + llc_hdr = (struct ath6kl_llc_snap_hdr *)(datap + + sizeof(struct + wmi_data_hdr) + + meta_size + hdr_size); + + if (llc_hdr->eth_type == htons(ip_type)) { + /* + * Extract the endpoint info from the TOS field + * in the IP header. + */ + usr_pri = + ath6kl_wmi_determine_user_priority(((u8 *) llc_hdr) + + sizeof(struct ath6kl_llc_snap_hdr), + layer2_priority); + } else + usr_pri = layer2_priority & 0x7; + } + + /* workaround for WMM S5 */ + if ((wmi->traffic_class == WMM_AC_VI) && + ((usr_pri == 5) || (usr_pri == 4))) + usr_pri = 1; + + /* Convert user priority to traffic class */ + traffic_class = up_to_ac[usr_pri & 0x7]; + + wmi_data_hdr_set_up(data_hdr, usr_pri); + + spin_lock_bh(&wmi->lock); + stream_exist = wmi->fat_pipe_exist; + spin_unlock_bh(&wmi->lock); + + if (!(stream_exist & (1 << traffic_class))) { + memset(&cmd, 0, sizeof(cmd)); + cmd.traffic_class = traffic_class; + cmd.user_pri = usr_pri; + cmd.inactivity_int = + cpu_to_le32(WMI_IMPLICIT_PSTREAM_INACTIVITY_INT); + /* Implicit streams are created with TSID 0xFF */ + cmd.tsid = WMI_IMPLICIT_PSTREAM; + ath6kl_wmi_create_pstream_cmd(wmi, &cmd); + } + + *ac = traffic_class; + + return 0; +} + +int ath6kl_wmi_dot11_hdr_remove(struct wmi *wmi, struct sk_buff *skb) +{ + struct ieee80211_hdr_3addr *pwh, wh; + struct ath6kl_llc_snap_hdr *llc_hdr; + struct ethhdr eth_hdr; + u32 hdr_size; + u8 *datap; + __le16 sub_type; + + if (WARN_ON(skb == NULL)) + return -EINVAL; + + datap = skb->data; + pwh = (struct ieee80211_hdr_3addr *) datap; + + sub_type = pwh->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE); + + memcpy((u8 *) &wh, datap, sizeof(struct ieee80211_hdr_3addr)); + + /* Strip off the 802.11 header */ + if (sub_type == cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) { + hdr_size = roundup(sizeof(struct ieee80211_qos_hdr), + sizeof(u32)); + skb_pull(skb, hdr_size); + } else if (sub_type == cpu_to_le16(IEEE80211_STYPE_DATA)) + skb_pull(skb, sizeof(struct ieee80211_hdr_3addr)); + + datap = skb->data; + llc_hdr = (struct ath6kl_llc_snap_hdr *)(datap); + + eth_hdr.h_proto = llc_hdr->eth_type; + memset(eth_hdr.h_dest, 0, sizeof(eth_hdr.h_dest)); + memset(eth_hdr.h_source, 0, sizeof(eth_hdr.h_source)); + + switch ((le16_to_cpu(wh.frame_control)) & + (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { + case 0: + memcpy(eth_hdr.h_dest, wh.addr1, ETH_ALEN); + memcpy(eth_hdr.h_source, wh.addr2, ETH_ALEN); + break; + case IEEE80211_FCTL_TODS: + memcpy(eth_hdr.h_dest, wh.addr3, ETH_ALEN); + memcpy(eth_hdr.h_source, wh.addr2, ETH_ALEN); + break; + case IEEE80211_FCTL_FROMDS: + memcpy(eth_hdr.h_dest, wh.addr1, ETH_ALEN); + memcpy(eth_hdr.h_source, wh.addr3, ETH_ALEN); + break; + case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS: + break; + } + + skb_pull(skb, sizeof(struct ath6kl_llc_snap_hdr)); + skb_push(skb, sizeof(eth_hdr)); + + datap = skb->data; + + memcpy(datap, ð_hdr, sizeof(eth_hdr)); + + return 0; +} + +/* + * Performs 802.3 to DIX encapsulation for received packets. + * Assumes the entire 802.3 header is contigous. + */ +int ath6kl_wmi_dot3_2_dix(struct sk_buff *skb) +{ + struct ath6kl_llc_snap_hdr *llc_hdr; + struct ethhdr eth_hdr; + u8 *datap; + + if (WARN_ON(skb == NULL)) + return -EINVAL; + + datap = skb->data; + + memcpy(ð_hdr, datap, sizeof(eth_hdr)); + + llc_hdr = (struct ath6kl_llc_snap_hdr *) (datap + sizeof(eth_hdr)); + eth_hdr.h_proto = llc_hdr->eth_type; + + skb_pull(skb, sizeof(struct ath6kl_llc_snap_hdr)); + datap = skb->data; + + memcpy(datap, ð_hdr, sizeof(eth_hdr)); + + return 0; +} + +int ath6kl_wmi_data_hdr_remove(struct wmi *wmi, struct sk_buff *skb) +{ + if (WARN_ON(skb == NULL)) + return -EINVAL; + + skb_pull(skb, sizeof(struct wmi_data_hdr)); + + return 0; +} + +void ath6kl_wmi_iterate_nodes(struct wmi *wmi, + void (*f) (void *arg, struct bss *), + void *arg) +{ + wlan_iterate_nodes(&wmi->scan_table, f, arg); +} + +static void ath6kl_wmi_convert_bssinfo_hdr2_to_hdr(struct sk_buff *skb, + u8 *datap) +{ + struct wmi_bss_info_hdr2 bih2; + struct wmi_bss_info_hdr *bih; + + memcpy(&bih2, datap, sizeof(struct wmi_bss_info_hdr2)); + + skb_push(skb, 4); + bih = (struct wmi_bss_info_hdr *) skb->data; + + bih->ch = bih2.ch; + bih->frame_type = bih2.frame_type; + bih->snr = bih2.snr; + bih->rssi = a_cpu_to_sle16(bih2.snr - 95); + bih->ie_mask = cpu_to_le32(le16_to_cpu(bih2.ie_mask)); + memcpy(bih->bssid, bih2.bssid, ETH_ALEN); +} + +static int ath6kl_wmi_tx_complete_event_rx(u8 *datap, int len) +{ + struct tx_complete_msg_v1 *msg_v1; + struct wmi_tx_complete_event *evt; + int index; + u16 size; + + evt = (struct wmi_tx_complete_event *) datap; + + ath6kl_dbg(ATH6KL_DBG_WMI, "comp: %d %d %d\n", + evt->num_msg, evt->msg_len, evt->msg_type); + + if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_WMI)) + return 0; + + for (index = 0; index < evt->num_msg; index++) { + size = sizeof(struct wmi_tx_complete_event) + + (index * sizeof(struct tx_complete_msg_v1)); + msg_v1 = (struct tx_complete_msg_v1 *)(datap + size); + + ath6kl_dbg(ATH6KL_DBG_WMI, "msg: %d %d %d %d\n", + msg_v1->status, msg_v1->pkt_id, + msg_v1->rate_idx, msg_v1->ack_failures); + } + + return 0; +} + +static inline struct sk_buff *ath6kl_wmi_get_new_buf(u32 size) +{ + struct sk_buff *skb; + + skb = ath6kl_buf_alloc(size); + if (!skb) + return NULL; + + skb_put(skb, size); + if (size) + memset(skb->data, 0, size); + + return skb; +} + +/* Send a "simple" wmi command -- one with no arguments */ +static int ath6kl_wmi_simple_cmd(struct wmi *wmi, enum wmi_cmd_id cmd_id) +{ + struct sk_buff *skb; + int ret; + + skb = ath6kl_wmi_get_new_buf(0); + if (!skb) + return -ENOMEM; + + ret = ath6kl_wmi_cmd_send(wmi, skb, cmd_id, NO_SYNC_WMIFLAG); + + return ret; +} + +static int ath6kl_wmi_ready_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_ready_event_2 *ev = (struct wmi_ready_event_2 *) datap; + + if (len < sizeof(struct wmi_ready_event_2)) + return -EINVAL; + + wmi->ready = true; + ath6kl_ready_event(wmi->parent_dev, ev->mac_addr, + le32_to_cpu(ev->sw_version), + le32_to_cpu(ev->abi_version)); + + return 0; +} + +static int ath6kl_wmi_connect_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_connect_event *ev; + u8 *pie, *peie; + + if (len < sizeof(struct wmi_connect_event)) + return -EINVAL; + + ev = (struct wmi_connect_event *) datap; + + ath6kl_dbg(ATH6KL_DBG_WMI, "%s: freq %d bssid %pM\n", + __func__, ev->ch, ev->bssid); + + memcpy(wmi->bssid, ev->bssid, ETH_ALEN); + + /* Start of assoc rsp IEs */ + pie = ev->assoc_info + ev->beacon_ie_len + + ev->assoc_req_len + (sizeof(u16) * 3); /* capinfo, status, aid */ + + /* End of assoc rsp IEs */ + peie = ev->assoc_info + ev->beacon_ie_len + ev->assoc_req_len + + ev->assoc_resp_len; + + while (pie < peie) { + switch (*pie) { + case WLAN_EID_VENDOR_SPECIFIC: + if (pie[1] > 3 && pie[2] == 0x00 && pie[3] == 0x50 && + pie[4] == 0xf2 && pie[5] == WMM_OUI_TYPE) { + /* WMM OUT (00:50:F2) */ + if (pie[1] > 5 + && pie[6] == WMM_PARAM_OUI_SUBTYPE) + wmi->is_wmm_enabled = true; + } + break; + } + + if (wmi->is_wmm_enabled) + break; + + pie += pie[1] + 2; + } + + ath6kl_connect_event(wmi->parent_dev, le16_to_cpu(ev->ch), ev->bssid, + le16_to_cpu(ev->listen_intvl), + le16_to_cpu(ev->beacon_intvl), + le32_to_cpu(ev->nw_type), + ev->beacon_ie_len, ev->assoc_req_len, + ev->assoc_resp_len, ev->assoc_info); + + return 0; +} + +static int ath6kl_wmi_disconnect_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_disconnect_event *ev; + wmi->traffic_class = 100; + + if (len < sizeof(struct wmi_disconnect_event)) + return -EINVAL; + + ev = (struct wmi_disconnect_event *) datap; + memset(wmi->bssid, 0, sizeof(wmi->bssid)); + + wmi->is_wmm_enabled = false; + wmi->pair_crypto_type = NONE_CRYPT; + wmi->grp_crypto_type = NONE_CRYPT; + + ath6kl_disconnect_event(wmi->parent_dev, ev->disconn_reason, + ev->bssid, ev->assoc_resp_len, ev->assoc_info, + le16_to_cpu(ev->proto_reason_status)); + + return 0; +} + +static int ath6kl_wmi_peer_node_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_peer_node_event *ev; + + if (len < sizeof(struct wmi_peer_node_event)) + return -EINVAL; + + ev = (struct wmi_peer_node_event *) datap; + + if (ev->event_code == PEER_NODE_JOIN_EVENT) + ath6kl_dbg(ATH6KL_DBG_WMI, "joined node with mac addr: %pM\n", + ev->peer_mac_addr); + else if (ev->event_code == PEER_NODE_LEAVE_EVENT) + ath6kl_dbg(ATH6KL_DBG_WMI, "left node with mac addr: %pM\n", + ev->peer_mac_addr); + + return 0; +} + +static int ath6kl_wmi_tkip_micerr_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_tkip_micerr_event *ev; + + if (len < sizeof(struct wmi_tkip_micerr_event)) + return -EINVAL; + + ev = (struct wmi_tkip_micerr_event *) datap; + + ath6kl_tkip_micerr_event(wmi->parent_dev, ev->key_id, ev->is_mcast); + + return 0; +} + +static int ath6kl_wlan_parse_beacon(u8 *buf, int frame_len, + struct ath6kl_common_ie *cie) +{ + u8 *frm, *efrm; + u8 elemid_ssid = false; + + frm = buf; + efrm = (u8 *) (frm + frame_len); + + /* + * beacon/probe response frame format + * [8] time stamp + * [2] beacon interval + * [2] capability information + * [tlv] ssid + * [tlv] supported rates + * [tlv] country information + * [tlv] parameter set (FH/DS) + * [tlv] erp information + * [tlv] extended supported rates + * [tlv] WMM + * [tlv] WPA or RSN + * [tlv] Atheros Advanced Capabilities + */ + if ((efrm - frm) < 12) + return -EINVAL; + + memset(cie, 0, sizeof(*cie)); + + cie->ie_tstamp = frm; + frm += 8; + cie->ie_beaconInt = *(u16 *) frm; + frm += 2; + cie->ie_capInfo = *(u16 *) frm; + frm += 2; + cie->ie_chan = 0; + + while (frm < efrm) { + switch (*frm) { + case WLAN_EID_SSID: + if (!elemid_ssid) { + cie->ie_ssid = frm; + elemid_ssid = true; + } + break; + case WLAN_EID_SUPP_RATES: + cie->ie_rates = frm; + break; + case WLAN_EID_COUNTRY: + cie->ie_country = frm; + break; + case WLAN_EID_FH_PARAMS: + break; + case WLAN_EID_DS_PARAMS: + cie->ie_chan = frm[2]; + break; + case WLAN_EID_TIM: + cie->ie_tim = frm; + break; + case WLAN_EID_IBSS_PARAMS: + break; + case WLAN_EID_EXT_SUPP_RATES: + cie->ie_xrates = frm; + break; + case WLAN_EID_ERP_INFO: + if (frm[1] != 1) + return -EINVAL; + + cie->ie_erp = frm[2]; + break; + case WLAN_EID_RSN: + cie->ie_rsn = frm; + break; + case WLAN_EID_HT_CAPABILITY: + cie->ie_htcap = frm; + break; + case WLAN_EID_HT_INFORMATION: + cie->ie_htop = frm; + break; + case WLAN_EID_VENDOR_SPECIFIC: + if (frm[1] > 3 && frm[2] == 0x00 && frm[3] == 0x50 && + frm[4] == 0xf2) { + /* OUT Type (00:50:F2) */ + + if (frm[5] == WPA_OUI_TYPE) { + /* WPA OUT */ + cie->ie_wpa = frm; + } else if (frm[5] == WMM_OUI_TYPE) { + /* WMM OUT */ + cie->ie_wmm = frm; + } else if (frm[5] == WSC_OUT_TYPE) { + /* WSC OUT */ + cie->ie_wsc = frm; + } + + } else if (frm[1] > 3 && frm[2] == 0x00 + && frm[3] == 0x03 && frm[4] == 0x7f + && frm[5] == ATH_OUI_TYPE) { + /* Atheros OUI (00:03:7f) */ + cie->ie_ath = frm; + } + break; + default: + break; + } + frm += frm[1] + 2; + } + + if ((cie->ie_rates == NULL) + || (cie->ie_rates[1] > ATH6KL_RATE_MAXSIZE)) + return -EINVAL; + + if ((cie->ie_ssid == NULL) + || (cie->ie_ssid[1] > IEEE80211_MAX_SSID_LEN)) + return -EINVAL; + + return 0; +} + +static int ath6kl_wmi_bssinfo_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct bss *bss = NULL; + struct wmi_bss_info_hdr *bih; + u8 cached_ssid_len = 0; + u8 cached_ssid[IEEE80211_MAX_SSID_LEN] = { 0 }; + u8 beacon_ssid_len = 0; + u8 *buf, *ie_ssid; + u8 *ni_buf; + int buf_len; + + int ret; + + if (len <= sizeof(struct wmi_bss_info_hdr)) + return -EINVAL; + + bih = (struct wmi_bss_info_hdr *) datap; + bss = wlan_find_node(&wmi->scan_table, bih->bssid); + + if (a_sle16_to_cpu(bih->rssi) > 0) { + if (bss == NULL) + return 0; + else + bih->rssi = a_cpu_to_sle16(bss->ni_rssi); + } + + buf = datap + sizeof(struct wmi_bss_info_hdr); + len -= sizeof(struct wmi_bss_info_hdr); + + ath6kl_dbg(ATH6KL_DBG_WMI, + "bss info evt - ch %u, rssi %02x, bssid \"%pM\"\n", + bih->ch, a_sle16_to_cpu(bih->rssi), bih->bssid); + + if (bss != NULL) { + /* + * Free up the node. We are about to allocate a new node. + * In case of hidden AP, beacon will not have ssid, + * but a directed probe response will have it, + * so cache the probe-resp-ssid if already present. + */ + if (wmi->is_probe_ssid && (bih->frame_type == BEACON_FTYPE)) { + ie_ssid = bss->ni_cie.ie_ssid; + if (ie_ssid && (ie_ssid[1] <= IEEE80211_MAX_SSID_LEN) && + (ie_ssid[2] != 0)) { + cached_ssid_len = ie_ssid[1]; + memcpy(cached_ssid, ie_ssid + 2, + cached_ssid_len); + } + } + + /* + * Use the current average rssi of associated AP base on + * assumption + * 1. Most os with GUI will update RSSI by + * ath6kl_wmi_get_stats_cmd() periodically. + * 2. ath6kl_wmi_get_stats_cmd(..) will be called when calling + * ath6kl_wmi_startscan_cmd(...) + * The average value of RSSI give end-user better feeling for + * instance value of scan result. It also sync up RSSI info + * in GUI between scan result and RSSI signal icon. + */ + if (memcmp(wmi->bssid, bih->bssid, ETH_ALEN) == 0) { + bih->rssi = a_cpu_to_sle16(bss->ni_rssi); + bih->snr = bss->ni_snr; + } + + wlan_node_reclaim(&wmi->scan_table, bss); + } + + /* + * beacon/probe response frame format + * [8] time stamp + * [2] beacon interval + * [2] capability information + * [tlv] ssid + */ + beacon_ssid_len = buf[SSID_IE_LEN_INDEX]; + + /* + * If ssid is cached for this hidden AP, then change + * buffer len accordingly. + */ + if (wmi->is_probe_ssid && (bih->frame_type == BEACON_FTYPE) && + (cached_ssid_len != 0) && + (beacon_ssid_len == 0 || (cached_ssid_len > beacon_ssid_len && + buf[SSID_IE_LEN_INDEX + 1] == 0))) { + + len += (cached_ssid_len - beacon_ssid_len); + } + + bss = wlan_node_alloc(len); + if (!bss) + return -ENOMEM; + + bss->ni_snr = bih->snr; + bss->ni_rssi = a_sle16_to_cpu(bih->rssi); + + if (WARN_ON(!bss->ni_buf)) + return -EINVAL; + + /* + * In case of hidden AP, beacon will not have ssid, + * but a directed probe response will have it, + * so place the cached-ssid(probe-resp) in the bss info. + */ + if (wmi->is_probe_ssid && (bih->frame_type == BEACON_FTYPE) && + (cached_ssid_len != 0) && + (beacon_ssid_len == 0 || (beacon_ssid_len && + buf[SSID_IE_LEN_INDEX + 1] == 0))) { + ni_buf = bss->ni_buf; + buf_len = len; + + /* + * Copy the first 14 bytes: + * time-stamp(8), beacon-interval(2), + * cap-info(2), ssid-id(1), ssid-len(1). + */ + memcpy(ni_buf, buf, SSID_IE_LEN_INDEX + 1); + + ni_buf[SSID_IE_LEN_INDEX] = cached_ssid_len; + ni_buf += (SSID_IE_LEN_INDEX + 1); + + buf += (SSID_IE_LEN_INDEX + 1); + buf_len -= (SSID_IE_LEN_INDEX + 1); + + memcpy(ni_buf, cached_ssid, cached_ssid_len); + ni_buf += cached_ssid_len; + + buf += beacon_ssid_len; + buf_len -= beacon_ssid_len; + + if (cached_ssid_len > beacon_ssid_len) + buf_len -= (cached_ssid_len - beacon_ssid_len); + + memcpy(ni_buf, buf, buf_len); + } else + memcpy(bss->ni_buf, buf, len); + + bss->ni_framelen = len; + + ret = ath6kl_wlan_parse_beacon(bss->ni_buf, len, &bss->ni_cie); + if (ret) { + wlan_node_free(bss); + return -EINVAL; + } + + /* + * Update the frequency in ie_chan, overwriting of channel number + * which is done in ath6kl_wlan_parse_beacon + */ + bss->ni_cie.ie_chan = le16_to_cpu(bih->ch); + wlan_setup_node(&wmi->scan_table, bss, bih->bssid); + + return 0; +} + +static int ath6kl_wmi_opt_frame_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct bss *bss; + struct wmi_opt_rx_info_hdr *bih; + u8 *buf; + + if (len <= sizeof(struct wmi_opt_rx_info_hdr)) + return -EINVAL; + + bih = (struct wmi_opt_rx_info_hdr *) datap; + buf = datap + sizeof(struct wmi_opt_rx_info_hdr); + len -= sizeof(struct wmi_opt_rx_info_hdr); + + ath6kl_dbg(ATH6KL_DBG_WMI, "opt frame event %2.2x:%2.2x\n", + bih->bssid[4], bih->bssid[5]); + + bss = wlan_find_node(&wmi->scan_table, bih->bssid); + if (bss != NULL) { + /* Free up the node. We are about to allocate a new node. */ + wlan_node_reclaim(&wmi->scan_table, bss); + } + + bss = wlan_node_alloc(len); + if (!bss) + return -ENOMEM; + + bss->ni_snr = bih->snr; + bss->ni_cie.ie_chan = le16_to_cpu(bih->ch); + + if (WARN_ON(!bss->ni_buf)) + return -EINVAL; + + memcpy(bss->ni_buf, buf, len); + wlan_setup_node(&wmi->scan_table, bss, bih->bssid); + + return 0; +} + +/* Inactivity timeout of a fatpipe(pstream) at the target */ +static int ath6kl_wmi_pstream_timeout_event_rx(struct wmi *wmi, u8 *datap, + int len) +{ + struct wmi_pstream_timeout_event *ev; + + if (len < sizeof(struct wmi_pstream_timeout_event)) + return -EINVAL; + + ev = (struct wmi_pstream_timeout_event *) datap; + + /* + * When the pstream (fat pipe == AC) timesout, it means there were + * no thinStreams within this pstream & it got implicitly created + * due to data flow on this AC. We start the inactivity timer only + * for implicitly created pstream. Just reset the host state. + */ + spin_lock_bh(&wmi->lock); + wmi->stream_exist_for_ac[ev->traffic_class] = 0; + wmi->fat_pipe_exist &= ~(1 << ev->traffic_class); + spin_unlock_bh(&wmi->lock); + + /* Indicate inactivity to driver layer for this fatpipe (pstream) */ + ath6kl_indicate_tx_activity(wmi->parent_dev, ev->traffic_class, false); + + return 0; +} + +static int ath6kl_wmi_bitrate_reply_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_bit_rate_reply *reply; + s32 rate; + u32 sgi, index; + + if (len < sizeof(struct wmi_bit_rate_reply)) + return -EINVAL; + + reply = (struct wmi_bit_rate_reply *) datap; + + ath6kl_dbg(ATH6KL_DBG_WMI, "rateindex %d\n", reply->rate_index); + + if (reply->rate_index == (s8) RATE_AUTO) { + rate = RATE_AUTO; + } else { + index = reply->rate_index & 0x7f; + sgi = (reply->rate_index & 0x80) ? 1 : 0; + rate = wmi_rate_tbl[index][sgi]; + } + + ath6kl_wakeup_event(wmi->parent_dev); + + return 0; +} + +static int ath6kl_wmi_ratemask_reply_rx(struct wmi *wmi, u8 *datap, int len) +{ + if (len < sizeof(struct wmi_fix_rates_reply)) + return -EINVAL; + + ath6kl_wakeup_event(wmi->parent_dev); + + return 0; +} + +static int ath6kl_wmi_ch_list_reply_rx(struct wmi *wmi, u8 *datap, int len) +{ + if (len < sizeof(struct wmi_channel_list_reply)) + return -EINVAL; + + ath6kl_wakeup_event(wmi->parent_dev); + + return 0; +} + +static int ath6kl_wmi_tx_pwr_reply_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_tx_pwr_reply *reply; + + if (len < sizeof(struct wmi_tx_pwr_reply)) + return -EINVAL; + + reply = (struct wmi_tx_pwr_reply *) datap; + ath6kl_txpwr_rx_evt(wmi->parent_dev, reply->dbM); + + return 0; +} + +static int ath6kl_wmi_keepalive_reply_rx(struct wmi *wmi, u8 *datap, int len) +{ + if (len < sizeof(struct wmi_get_keepalive_cmd)) + return -EINVAL; + + ath6kl_wakeup_event(wmi->parent_dev); + + return 0; +} + +static int ath6kl_wmi_scan_complete_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_scan_complete_event *ev; + + ev = (struct wmi_scan_complete_event *) datap; + + if (a_sle32_to_cpu(ev->status) == 0) + wlan_refresh_inactive_nodes(&wmi->scan_table); + + ath6kl_scan_complete_evt(wmi->parent_dev, a_sle32_to_cpu(ev->status)); + wmi->is_probe_ssid = false; + + return 0; +} + +/* + * Target is reporting a programming error. This is for + * developer aid only. Target only checks a few common violations + * and it is responsibility of host to do all error checking. + * Behavior of target after wmi error event is undefined. + * A reset is recommended. + */ +static int ath6kl_wmi_error_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + const char *type = "unknown error"; + struct wmi_cmd_error_event *ev; + ev = (struct wmi_cmd_error_event *) datap; + + switch (ev->err_code) { + case INVALID_PARAM: + type = "invalid parameter"; + break; + case ILLEGAL_STATE: + type = "invalid state"; + break; + case INTERNAL_ERROR: + type = "internal error"; + break; + } + + ath6kl_dbg(ATH6KL_DBG_WMI, "programming error, cmd=%d %s\n", + ev->cmd_id, type); + + return 0; +} + +static int ath6kl_wmi_stats_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + ath6kl_tgt_stats_event(wmi->parent_dev, datap, len); + + return 0; +} + +static u8 ath6kl_wmi_get_upper_threshold(s16 rssi, + struct sq_threshold_params *sq_thresh, + u32 size) +{ + u32 index; + u8 threshold = (u8) sq_thresh->upper_threshold[size - 1]; + + /* The list is already in sorted order. Get the next lower value */ + for (index = 0; index < size; index++) { + if (rssi < sq_thresh->upper_threshold[index]) { + threshold = (u8) sq_thresh->upper_threshold[index]; + break; + } + } + + return threshold; +} + +static u8 ath6kl_wmi_get_lower_threshold(s16 rssi, + struct sq_threshold_params *sq_thresh, + u32 size) +{ + u32 index; + u8 threshold = (u8) sq_thresh->lower_threshold[size - 1]; + + /* The list is already in sorted order. Get the next lower value */ + for (index = 0; index < size; index++) { + if (rssi > sq_thresh->lower_threshold[index]) { + threshold = (u8) sq_thresh->lower_threshold[index]; + break; + } + } + + return threshold; +} + +static int ath6kl_wmi_send_rssi_threshold_params(struct wmi *wmi, + struct wmi_rssi_threshold_params_cmd *rssi_cmd) +{ + struct sk_buff *skb; + struct wmi_rssi_threshold_params_cmd *cmd; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_rssi_threshold_params_cmd *) skb->data; + memcpy(cmd, rssi_cmd, sizeof(struct wmi_rssi_threshold_params_cmd)); + + return ath6kl_wmi_cmd_send(wmi, skb, WMI_RSSI_THRESHOLD_PARAMS_CMDID, + NO_SYNC_WMIFLAG); +} + +static int ath6kl_wmi_rssi_threshold_event_rx(struct wmi *wmi, u8 *datap, + int len) +{ + struct wmi_rssi_threshold_event *reply; + struct wmi_rssi_threshold_params_cmd cmd; + struct sq_threshold_params *sq_thresh; + enum wmi_rssi_threshold_val new_threshold; + u8 upper_rssi_threshold, lower_rssi_threshold; + s16 rssi; + int ret; + + if (len < sizeof(struct wmi_rssi_threshold_event)) + return -EINVAL; + + reply = (struct wmi_rssi_threshold_event *) datap; + new_threshold = (enum wmi_rssi_threshold_val) reply->range; + rssi = a_sle16_to_cpu(reply->rssi); + + sq_thresh = &wmi->sq_threshld[SIGNAL_QUALITY_METRICS_RSSI]; + + /* + * Identify the threshold breached and communicate that to the app. + * After that install a new set of thresholds based on the signal + * quality reported by the target + */ + if (new_threshold) { + /* Upper threshold breached */ + if (rssi < sq_thresh->upper_threshold[0]) { + ath6kl_dbg(ATH6KL_DBG_WMI, + "spurious upper rssi threshold event: %d\n", + rssi); + } else if ((rssi < sq_thresh->upper_threshold[1]) && + (rssi >= sq_thresh->upper_threshold[0])) { + new_threshold = WMI_RSSI_THRESHOLD1_ABOVE; + } else if ((rssi < sq_thresh->upper_threshold[2]) && + (rssi >= sq_thresh->upper_threshold[1])) { + new_threshold = WMI_RSSI_THRESHOLD2_ABOVE; + } else if ((rssi < sq_thresh->upper_threshold[3]) && + (rssi >= sq_thresh->upper_threshold[2])) { + new_threshold = WMI_RSSI_THRESHOLD3_ABOVE; + } else if ((rssi < sq_thresh->upper_threshold[4]) && + (rssi >= sq_thresh->upper_threshold[3])) { + new_threshold = WMI_RSSI_THRESHOLD4_ABOVE; + } else if ((rssi < sq_thresh->upper_threshold[5]) && + (rssi >= sq_thresh->upper_threshold[4])) { + new_threshold = WMI_RSSI_THRESHOLD5_ABOVE; + } else if (rssi >= sq_thresh->upper_threshold[5]) { + new_threshold = WMI_RSSI_THRESHOLD6_ABOVE; + } + } else { + /* Lower threshold breached */ + if (rssi > sq_thresh->lower_threshold[0]) { + ath6kl_dbg(ATH6KL_DBG_WMI, + "spurious lower rssi threshold event: %d %d\n", + rssi, sq_thresh->lower_threshold[0]); + } else if ((rssi > sq_thresh->lower_threshold[1]) && + (rssi <= sq_thresh->lower_threshold[0])) { + new_threshold = WMI_RSSI_THRESHOLD6_BELOW; + } else if ((rssi > sq_thresh->lower_threshold[2]) && + (rssi <= sq_thresh->lower_threshold[1])) { + new_threshold = WMI_RSSI_THRESHOLD5_BELOW; + } else if ((rssi > sq_thresh->lower_threshold[3]) && + (rssi <= sq_thresh->lower_threshold[2])) { + new_threshold = WMI_RSSI_THRESHOLD4_BELOW; + } else if ((rssi > sq_thresh->lower_threshold[4]) && + (rssi <= sq_thresh->lower_threshold[3])) { + new_threshold = WMI_RSSI_THRESHOLD3_BELOW; + } else if ((rssi > sq_thresh->lower_threshold[5]) && + (rssi <= sq_thresh->lower_threshold[4])) { + new_threshold = WMI_RSSI_THRESHOLD2_BELOW; + } else if (rssi <= sq_thresh->lower_threshold[5]) { + new_threshold = WMI_RSSI_THRESHOLD1_BELOW; + } + } + + /* Calculate and install the next set of thresholds */ + lower_rssi_threshold = ath6kl_wmi_get_lower_threshold(rssi, sq_thresh, + sq_thresh->lower_threshold_valid_count); + upper_rssi_threshold = ath6kl_wmi_get_upper_threshold(rssi, sq_thresh, + sq_thresh->upper_threshold_valid_count); + + /* Issue a wmi command to install the thresholds */ + cmd.thresh_above1_val = a_cpu_to_sle16(upper_rssi_threshold); + cmd.thresh_below1_val = a_cpu_to_sle16(lower_rssi_threshold); + cmd.weight = sq_thresh->weight; + cmd.poll_time = cpu_to_le32(sq_thresh->polling_interval); + + ret = ath6kl_wmi_send_rssi_threshold_params(wmi, &cmd); + if (ret) { + ath6kl_err("unable to configure rssi thresholds\n"); + return -EIO; + } + + return 0; +} + +static int ath6kl_wmi_cac_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_cac_event *reply; + struct ieee80211_tspec_ie *ts; + u16 active_tsids, tsinfo; + u8 tsid, index; + u8 ts_id; + + if (len < sizeof(struct wmi_cac_event)) + return -EINVAL; + + reply = (struct wmi_cac_event *) datap; + + if ((reply->cac_indication == CAC_INDICATION_ADMISSION_RESP) && + (reply->status_code != IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED)) { + + ts = (struct ieee80211_tspec_ie *) &(reply->tspec_suggestion); + tsinfo = le16_to_cpu(ts->tsinfo); + tsid = (tsinfo >> IEEE80211_WMM_IE_TSPEC_TID_SHIFT) & + IEEE80211_WMM_IE_TSPEC_TID_MASK; + + ath6kl_wmi_delete_pstream_cmd(wmi, reply->ac, tsid); + } else if (reply->cac_indication == CAC_INDICATION_NO_RESP) { + /* + * Following assumes that there is only one outstanding + * ADDTS request when this event is received + */ + spin_lock_bh(&wmi->lock); + active_tsids = wmi->stream_exist_for_ac[reply->ac]; + spin_unlock_bh(&wmi->lock); + + for (index = 0; index < sizeof(active_tsids) * 8; index++) { + if ((active_tsids >> index) & 1) + break; + } + if (index < (sizeof(active_tsids) * 8)) + ath6kl_wmi_delete_pstream_cmd(wmi, reply->ac, index); + } + + /* + * Clear active tsids and Add missing handling + * for delete qos stream from AP + */ + else if (reply->cac_indication == CAC_INDICATION_DELETE) { + + ts = (struct ieee80211_tspec_ie *) &(reply->tspec_suggestion); + tsinfo = le16_to_cpu(ts->tsinfo); + ts_id = ((tsinfo >> IEEE80211_WMM_IE_TSPEC_TID_SHIFT) & + IEEE80211_WMM_IE_TSPEC_TID_MASK); + + spin_lock_bh(&wmi->lock); + wmi->stream_exist_for_ac[reply->ac] &= ~(1 << ts_id); + active_tsids = wmi->stream_exist_for_ac[reply->ac]; + spin_unlock_bh(&wmi->lock); + + /* Indicate stream inactivity to driver layer only if all tsids + * within this AC are deleted. + */ + if (!active_tsids) { + ath6kl_indicate_tx_activity(wmi->parent_dev, reply->ac, + false); + wmi->fat_pipe_exist &= ~(1 << reply->ac); + } + } + + return 0; +} + +static int ath6kl_wmi_send_snr_threshold_params(struct wmi *wmi, + struct wmi_snr_threshold_params_cmd *snr_cmd) +{ + struct sk_buff *skb; + struct wmi_snr_threshold_params_cmd *cmd; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_snr_threshold_params_cmd *) skb->data; + memcpy(cmd, snr_cmd, sizeof(struct wmi_snr_threshold_params_cmd)); + + return ath6kl_wmi_cmd_send(wmi, skb, WMI_SNR_THRESHOLD_PARAMS_CMDID, + NO_SYNC_WMIFLAG); +} + +static int ath6kl_wmi_snr_threshold_event_rx(struct wmi *wmi, u8 *datap, + int len) +{ + struct wmi_snr_threshold_event *reply; + struct sq_threshold_params *sq_thresh; + struct wmi_snr_threshold_params_cmd cmd; + enum wmi_snr_threshold_val new_threshold; + u8 upper_snr_threshold, lower_snr_threshold; + s16 snr; + int ret; + + if (len < sizeof(struct wmi_snr_threshold_event)) + return -EINVAL; + + reply = (struct wmi_snr_threshold_event *) datap; + + new_threshold = (enum wmi_snr_threshold_val) reply->range; + snr = reply->snr; + + sq_thresh = &wmi->sq_threshld[SIGNAL_QUALITY_METRICS_SNR]; + + /* + * Identify the threshold breached and communicate that to the app. + * After that install a new set of thresholds based on the signal + * quality reported by the target. + */ + if (new_threshold) { + /* Upper threshold breached */ + if (snr < sq_thresh->upper_threshold[0]) { + ath6kl_dbg(ATH6KL_DBG_WMI, + "spurious upper snr threshold event: %d\n", + snr); + } else if ((snr < sq_thresh->upper_threshold[1]) && + (snr >= sq_thresh->upper_threshold[0])) { + new_threshold = WMI_SNR_THRESHOLD1_ABOVE; + } else if ((snr < sq_thresh->upper_threshold[2]) && + (snr >= sq_thresh->upper_threshold[1])) { + new_threshold = WMI_SNR_THRESHOLD2_ABOVE; + } else if ((snr < sq_thresh->upper_threshold[3]) && + (snr >= sq_thresh->upper_threshold[2])) { + new_threshold = WMI_SNR_THRESHOLD3_ABOVE; + } else if (snr >= sq_thresh->upper_threshold[3]) { + new_threshold = WMI_SNR_THRESHOLD4_ABOVE; + } + } else { + /* Lower threshold breached */ + if (snr > sq_thresh->lower_threshold[0]) { + ath6kl_dbg(ATH6KL_DBG_WMI, + "spurious lower snr threshold event: %d\n", + sq_thresh->lower_threshold[0]); + } else if ((snr > sq_thresh->lower_threshold[1]) && + (snr <= sq_thresh->lower_threshold[0])) { + new_threshold = WMI_SNR_THRESHOLD4_BELOW; + } else if ((snr > sq_thresh->lower_threshold[2]) && + (snr <= sq_thresh->lower_threshold[1])) { + new_threshold = WMI_SNR_THRESHOLD3_BELOW; + } else if ((snr > sq_thresh->lower_threshold[3]) && + (snr <= sq_thresh->lower_threshold[2])) { + new_threshold = WMI_SNR_THRESHOLD2_BELOW; + } else if (snr <= sq_thresh->lower_threshold[3]) { + new_threshold = WMI_SNR_THRESHOLD1_BELOW; + } + } + + /* Calculate and install the next set of thresholds */ + lower_snr_threshold = ath6kl_wmi_get_lower_threshold(snr, sq_thresh, + sq_thresh->lower_threshold_valid_count); + upper_snr_threshold = ath6kl_wmi_get_upper_threshold(snr, sq_thresh, + sq_thresh->upper_threshold_valid_count); + + /* Issue a wmi command to install the thresholds */ + cmd.thresh_above1_val = upper_snr_threshold; + cmd.thresh_below1_val = lower_snr_threshold; + cmd.weight = sq_thresh->weight; + cmd.poll_time = cpu_to_le32(sq_thresh->polling_interval); + + ath6kl_dbg(ATH6KL_DBG_WMI, + "snr: %d, threshold: %d, lower: %d, upper: %d\n", + snr, new_threshold, + lower_snr_threshold, upper_snr_threshold); + + ret = ath6kl_wmi_send_snr_threshold_params(wmi, &cmd); + if (ret) { + ath6kl_err("unable to configure snr threshold\n"); + return -EIO; + } + + return 0; +} + +static int ath6kl_wmi_aplist_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + u16 ap_info_entry_size; + struct wmi_aplist_event *ev = (struct wmi_aplist_event *) datap; + struct wmi_ap_info_v1 *ap_info_v1; + u8 index; + + if (len < sizeof(struct wmi_aplist_event) || + ev->ap_list_ver != APLIST_VER1) + return -EINVAL; + + ap_info_entry_size = sizeof(struct wmi_ap_info_v1); + ap_info_v1 = (struct wmi_ap_info_v1 *) ev->ap_list; + + ath6kl_dbg(ATH6KL_DBG_WMI, + "number of APs in aplist event: %d\n", ev->num_ap); + + if (len < (int) (sizeof(struct wmi_aplist_event) + + (ev->num_ap - 1) * ap_info_entry_size)) + return -EINVAL; + + /* AP list version 1 contents */ + for (index = 0; index < ev->num_ap; index++) { + ath6kl_dbg(ATH6KL_DBG_WMI, "AP#%d BSSID %pM Channel %d\n", + index, ap_info_v1->bssid, ap_info_v1->channel); + ap_info_v1++; + } + + return 0; +} + +int ath6kl_wmi_cmd_send(struct wmi *wmi, struct sk_buff *skb, + enum wmi_cmd_id cmd_id, enum wmi_sync_flag sync_flag) +{ + struct wmi_cmd_hdr *cmd_hdr; + enum htc_endpoint_id ep_id = wmi->ep_id; + int ret; + + if (WARN_ON(skb == NULL)) + return -EINVAL; + + if (sync_flag >= END_WMIFLAG) { + dev_kfree_skb(skb); + return -EINVAL; + } + + if ((sync_flag == SYNC_BEFORE_WMIFLAG) || + (sync_flag == SYNC_BOTH_WMIFLAG)) { + /* + * Make sure all data currently queued is transmitted before + * the cmd execution. Establish a new sync point. + */ + ath6kl_wmi_sync_point(wmi); + } + + skb_push(skb, sizeof(struct wmi_cmd_hdr)); + + cmd_hdr = (struct wmi_cmd_hdr *) skb->data; + cmd_hdr->cmd_id = cpu_to_le16(cmd_id); + cmd_hdr->info1 = 0; /* added for virtual interface */ + + /* Only for OPT_TX_CMD, use BE endpoint. */ + if (cmd_id == WMI_OPT_TX_FRAME_CMDID) { + ret = ath6kl_wmi_data_hdr_add(wmi, skb, OPT_MSGTYPE, + false, false, 0, NULL); + if (ret) { + dev_kfree_skb(skb); + return ret; + } + ep_id = ath6kl_ac2_endpoint_id(wmi->parent_dev, WMM_AC_BE); + } + + ath6kl_control_tx(wmi->parent_dev, skb, ep_id); + + if ((sync_flag == SYNC_AFTER_WMIFLAG) || + (sync_flag == SYNC_BOTH_WMIFLAG)) { + /* + * Make sure all new data queued waits for the command to + * execute. Establish a new sync point. + */ + ath6kl_wmi_sync_point(wmi); + } + + return 0; +} + +int ath6kl_wmi_connect_cmd(struct wmi *wmi, enum network_type nw_type, + enum dot11_auth_mode dot11_auth_mode, + enum auth_mode auth_mode, + enum crypto_type pairwise_crypto, + u8 pairwise_crypto_len, + enum crypto_type group_crypto, + u8 group_crypto_len, int ssid_len, u8 *ssid, + u8 *bssid, u16 channel, u32 ctrl_flags) +{ + struct sk_buff *skb; + struct wmi_connect_cmd *cc; + int ret; + + wmi->traffic_class = 100; + + if ((pairwise_crypto == NONE_CRYPT) && (group_crypto != NONE_CRYPT)) + return -EINVAL; + + if ((pairwise_crypto != NONE_CRYPT) && (group_crypto == NONE_CRYPT)) + return -EINVAL; + + skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_connect_cmd)); + if (!skb) + return -ENOMEM; + + cc = (struct wmi_connect_cmd *) skb->data; + + if (ssid_len) + memcpy(cc->ssid, ssid, ssid_len); + + cc->ssid_len = ssid_len; + cc->nw_type = nw_type; + cc->dot11_auth_mode = dot11_auth_mode; + cc->auth_mode = auth_mode; + cc->prwise_crypto_type = pairwise_crypto; + cc->prwise_crypto_len = pairwise_crypto_len; + cc->grp_crypto_type = group_crypto; + cc->grp_crypto_len = group_crypto_len; + cc->ch = cpu_to_le16(channel); + cc->ctrl_flags = cpu_to_le32(ctrl_flags); + + if (bssid != NULL) + memcpy(cc->bssid, bssid, ETH_ALEN); + + wmi->pair_crypto_type = pairwise_crypto; + wmi->grp_crypto_type = group_crypto; + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_CONNECT_CMDID, NO_SYNC_WMIFLAG); + + return ret; +} + +int ath6kl_wmi_reconnect_cmd(struct wmi *wmi, u8 *bssid, u16 channel) +{ + struct sk_buff *skb; + struct wmi_reconnect_cmd *cc; + int ret; + + wmi->traffic_class = 100; + + skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_reconnect_cmd)); + if (!skb) + return -ENOMEM; + + cc = (struct wmi_reconnect_cmd *) skb->data; + cc->channel = cpu_to_le16(channel); + + if (bssid != NULL) + memcpy(cc->bssid, bssid, ETH_ALEN); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_RECONNECT_CMDID, + NO_SYNC_WMIFLAG); + + return ret; +} + +int ath6kl_wmi_disconnect_cmd(struct wmi *wmi) +{ + int ret; + + wmi->traffic_class = 100; + + /* Disconnect command does not need to do a SYNC before. */ + ret = ath6kl_wmi_simple_cmd(wmi, WMI_DISCONNECT_CMDID); + + return ret; +} + +int ath6kl_wmi_startscan_cmd(struct wmi *wmi, enum wmi_scan_type scan_type, + u32 force_fgscan, u32 is_legacy, + u32 home_dwell_time, u32 force_scan_interval, + s8 num_chan, u16 *ch_list) +{ + struct sk_buff *skb; + struct wmi_start_scan_cmd *sc; + s8 size; + int ret; + + size = sizeof(struct wmi_start_scan_cmd); + + if ((scan_type != WMI_LONG_SCAN) && (scan_type != WMI_SHORT_SCAN)) + return -EINVAL; + + if (num_chan > WMI_MAX_CHANNELS) + return -EINVAL; + + if (num_chan) + size += sizeof(u16) * (num_chan - 1); + + skb = ath6kl_wmi_get_new_buf(size); + if (!skb) + return -ENOMEM; + + sc = (struct wmi_start_scan_cmd *) skb->data; + sc->scan_type = scan_type; + sc->force_fg_scan = cpu_to_le32(force_fgscan); + sc->is_legacy = cpu_to_le32(is_legacy); + sc->home_dwell_time = cpu_to_le32(home_dwell_time); + sc->force_scan_intvl = cpu_to_le32(force_scan_interval); + sc->num_ch = num_chan; + + if (num_chan) + memcpy(sc->ch_list, ch_list, num_chan * sizeof(u16)); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_START_SCAN_CMDID, + NO_SYNC_WMIFLAG); + + return ret; +} + +int ath6kl_wmi_scanparams_cmd(struct wmi *wmi, u16 fg_start_sec, + u16 fg_end_sec, u16 bg_sec, + u16 minact_chdw_msec, u16 maxact_chdw_msec, + u16 pas_chdw_msec, u8 short_scan_ratio, + u8 scan_ctrl_flag, u32 max_dfsch_act_time, + u16 maxact_scan_per_ssid) +{ + struct sk_buff *skb; + struct wmi_scan_params_cmd *sc; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*sc)); + if (!skb) + return -ENOMEM; + + sc = (struct wmi_scan_params_cmd *) skb->data; + sc->fg_start_period = cpu_to_le16(fg_start_sec); + sc->fg_end_period = cpu_to_le16(fg_end_sec); + sc->bg_period = cpu_to_le16(bg_sec); + sc->minact_chdwell_time = cpu_to_le16(minact_chdw_msec); + sc->maxact_chdwell_time = cpu_to_le16(maxact_chdw_msec); + sc->pas_chdwell_time = cpu_to_le16(pas_chdw_msec); + sc->short_scan_ratio = short_scan_ratio; + sc->scan_ctrl_flags = scan_ctrl_flag; + sc->max_dfsch_act_time = cpu_to_le32(max_dfsch_act_time); + sc->maxact_scan_per_ssid = cpu_to_le16(maxact_scan_per_ssid); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_SCAN_PARAMS_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_bssfilter_cmd(struct wmi *wmi, u8 filter, u32 ie_mask) +{ + struct sk_buff *skb; + struct wmi_bss_filter_cmd *cmd; + int ret; + + if (filter >= LAST_BSS_FILTER) + return -EINVAL; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_bss_filter_cmd *) skb->data; + cmd->bss_filter = filter; + cmd->ie_mask = cpu_to_le32(ie_mask); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_BSS_FILTER_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_probedssid_cmd(struct wmi *wmi, u8 index, u8 flag, + u8 ssid_len, u8 *ssid) +{ + struct sk_buff *skb; + struct wmi_probed_ssid_cmd *cmd; + int ret; + + if (index > MAX_PROBED_SSID_INDEX) + return -EINVAL; + + if (ssid_len > sizeof(cmd->ssid)) + return -EINVAL; + + if ((flag & (DISABLE_SSID_FLAG | ANY_SSID_FLAG)) && (ssid_len > 0)) + return -EINVAL; + + if ((flag & SPECIFIC_SSID_FLAG) && !ssid_len) + return -EINVAL; + + if (flag & SPECIFIC_SSID_FLAG) + wmi->is_probe_ssid = true; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_probed_ssid_cmd *) skb->data; + cmd->entry_index = index; + cmd->flag = flag; + cmd->ssid_len = ssid_len; + memcpy(cmd->ssid, ssid, ssid_len); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_PROBED_SSID_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_listeninterval_cmd(struct wmi *wmi, u16 listen_interval, + u16 listen_beacons) +{ + struct sk_buff *skb; + struct wmi_listen_int_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_listen_int_cmd *) skb->data; + cmd->listen_intvl = cpu_to_le16(listen_interval); + cmd->num_beacons = cpu_to_le16(listen_beacons); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_LISTEN_INT_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_powermode_cmd(struct wmi *wmi, u8 pwr_mode) +{ + struct sk_buff *skb; + struct wmi_power_mode_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_power_mode_cmd *) skb->data; + cmd->pwr_mode = pwr_mode; + wmi->pwr_mode = pwr_mode; + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_POWER_MODE_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_pmparams_cmd(struct wmi *wmi, u16 idle_period, + u16 ps_poll_num, u16 dtim_policy, + u16 tx_wakeup_policy, u16 num_tx_to_wakeup, + u16 ps_fail_event_policy) +{ + struct sk_buff *skb; + struct wmi_power_params_cmd *pm; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*pm)); + if (!skb) + return -ENOMEM; + + pm = (struct wmi_power_params_cmd *)skb->data; + pm->idle_period = cpu_to_le16(idle_period); + pm->pspoll_number = cpu_to_le16(ps_poll_num); + pm->dtim_policy = cpu_to_le16(dtim_policy); + pm->tx_wakeup_policy = cpu_to_le16(tx_wakeup_policy); + pm->num_tx_to_wakeup = cpu_to_le16(num_tx_to_wakeup); + pm->ps_fail_event_policy = cpu_to_le16(ps_fail_event_policy); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_POWER_PARAMS_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_disctimeout_cmd(struct wmi *wmi, u8 timeout) +{ + struct sk_buff *skb; + struct wmi_disc_timeout_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_disc_timeout_cmd *) skb->data; + cmd->discon_timeout = timeout; + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_DISC_TIMEOUT_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_addkey_cmd(struct wmi *wmi, u8 key_index, + enum crypto_type key_type, + u8 key_usage, u8 key_len, + u8 *key_rsc, u8 *key_material, + u8 key_op_ctrl, u8 *mac_addr, + enum wmi_sync_flag sync_flag) +{ + struct sk_buff *skb; + struct wmi_add_cipher_key_cmd *cmd; + int ret; + + if ((key_index > WMI_MAX_KEY_INDEX) || (key_len > WMI_MAX_KEY_LEN) || + (key_material == NULL)) + return -EINVAL; + + if ((WEP_CRYPT != key_type) && (NULL == key_rsc)) + return -EINVAL; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_add_cipher_key_cmd *) skb->data; + cmd->key_index = key_index; + cmd->key_type = key_type; + cmd->key_usage = key_usage; + cmd->key_len = key_len; + memcpy(cmd->key, key_material, key_len); + + if (key_rsc != NULL) + memcpy(cmd->key_rsc, key_rsc, sizeof(cmd->key_rsc)); + + cmd->key_op_ctrl = key_op_ctrl; + + if (mac_addr) + memcpy(cmd->key_mac_addr, mac_addr, ETH_ALEN); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_ADD_CIPHER_KEY_CMDID, + sync_flag); + + return ret; +} + +int ath6kl_wmi_add_krk_cmd(struct wmi *wmi, u8 *krk) +{ + struct sk_buff *skb; + struct wmi_add_krk_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_add_krk_cmd *) skb->data; + memcpy(cmd->krk, krk, WMI_KRK_LEN); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_ADD_KRK_CMDID, NO_SYNC_WMIFLAG); + + return ret; +} + +int ath6kl_wmi_deletekey_cmd(struct wmi *wmi, u8 key_index) +{ + struct sk_buff *skb; + struct wmi_delete_cipher_key_cmd *cmd; + int ret; + + if (key_index > WMI_MAX_KEY_INDEX) + return -EINVAL; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_delete_cipher_key_cmd *) skb->data; + cmd->key_index = key_index; + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_DELETE_CIPHER_KEY_CMDID, + NO_SYNC_WMIFLAG); + + return ret; +} + +int ath6kl_wmi_setpmkid_cmd(struct wmi *wmi, const u8 *bssid, + const u8 *pmkid, bool set) +{ + struct sk_buff *skb; + struct wmi_setpmkid_cmd *cmd; + int ret; + + if (bssid == NULL) + return -EINVAL; + + if (set && pmkid == NULL) + return -EINVAL; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_setpmkid_cmd *) skb->data; + memcpy(cmd->bssid, bssid, ETH_ALEN); + if (set) { + memcpy(cmd->pmkid, pmkid, sizeof(cmd->pmkid)); + cmd->enable = PMKID_ENABLE; + } else { + memset(cmd->pmkid, 0, sizeof(cmd->pmkid)); + cmd->enable = PMKID_DISABLE; + } + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_PMKID_CMDID, + NO_SYNC_WMIFLAG); + + return ret; +} + +static int ath6kl_wmi_data_sync_send(struct wmi *wmi, struct sk_buff *skb, + enum htc_endpoint_id ep_id) +{ + struct wmi_data_hdr *data_hdr; + int ret; + + if (WARN_ON(skb == NULL || ep_id == wmi->ep_id)) + return -EINVAL; + + skb_push(skb, sizeof(struct wmi_data_hdr)); + + data_hdr = (struct wmi_data_hdr *) skb->data; + data_hdr->info = SYNC_MSGTYPE << WMI_DATA_HDR_MSG_TYPE_SHIFT; + data_hdr->info3 = 0; + + ret = ath6kl_control_tx(wmi->parent_dev, skb, ep_id); + + return ret; +} + +static int ath6kl_wmi_sync_point(struct wmi *wmi) +{ + struct sk_buff *skb; + struct wmi_sync_cmd *cmd; + struct wmi_data_sync_bufs data_sync_bufs[WMM_NUM_AC]; + enum htc_endpoint_id ep_id; + u8 index, num_pri_streams = 0; + int ret = 0; + + memset(data_sync_bufs, 0, sizeof(data_sync_bufs)); + + spin_lock_bh(&wmi->lock); + + for (index = 0; index < WMM_NUM_AC; index++) { + if (wmi->fat_pipe_exist & (1 << index)) { + num_pri_streams++; + data_sync_bufs[num_pri_streams - 1].traffic_class = + index; + } + } + + spin_unlock_bh(&wmi->lock); + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) { + ret = -ENOMEM; + goto free_skb; + } + + cmd = (struct wmi_sync_cmd *) skb->data; + + /* + * In the SYNC cmd sent on the control Ep, send a bitmap + * of the data eps on which the Data Sync will be sent + */ + cmd->data_sync_map = wmi->fat_pipe_exist; + + for (index = 0; index < num_pri_streams; index++) { + data_sync_bufs[index].skb = ath6kl_buf_alloc(0); + if (data_sync_bufs[index].skb == NULL) { + ret = -ENOMEM; + break; + } + } + + /* + * If buffer allocation for any of the dataSync fails, + * then do not send the Synchronize cmd on the control ep + */ + if (ret) + goto free_skb; + + /* + * Send sync cmd followed by sync data messages on all + * endpoints being used + */ + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SYNCHRONIZE_CMDID, + NO_SYNC_WMIFLAG); + + if (ret) + goto free_skb; + + /* cmd buffer sent, we no longer own it */ + skb = NULL; + + for (index = 0; index < num_pri_streams; index++) { + + if (WARN_ON(!data_sync_bufs[index].skb)) + break; + + ep_id = ath6kl_ac2_endpoint_id(wmi->parent_dev, + data_sync_bufs[index]. + traffic_class); + ret = + ath6kl_wmi_data_sync_send(wmi, data_sync_bufs[index].skb, + ep_id); + + if (ret) + break; + + data_sync_bufs[index].skb = NULL; + } + +free_skb: + /* free up any resources left over (possibly due to an error) */ + if (skb) + dev_kfree_skb(skb); + + for (index = 0; index < num_pri_streams; index++) { + if (data_sync_bufs[index].skb != NULL) { + dev_kfree_skb((struct sk_buff *)data_sync_bufs[index]. + skb); + } + } + + return ret; +} + +int ath6kl_wmi_create_pstream_cmd(struct wmi *wmi, + struct wmi_create_pstream_cmd *params) +{ + struct sk_buff *skb; + struct wmi_create_pstream_cmd *cmd; + u8 fatpipe_exist_for_ac = 0; + s32 min_phy = 0; + s32 nominal_phy = 0; + int ret; + + if (!((params->user_pri < 8) && + (params->user_pri <= 0x7) && + (up_to_ac[params->user_pri & 0x7] == params->traffic_class) && + (params->traffic_direc == UPLINK_TRAFFIC || + params->traffic_direc == DNLINK_TRAFFIC || + params->traffic_direc == BIDIR_TRAFFIC) && + (params->traffic_type == TRAFFIC_TYPE_APERIODIC || + params->traffic_type == TRAFFIC_TYPE_PERIODIC) && + (params->voice_psc_cap == DISABLE_FOR_THIS_AC || + params->voice_psc_cap == ENABLE_FOR_THIS_AC || + params->voice_psc_cap == ENABLE_FOR_ALL_AC) && + (params->tsid == WMI_IMPLICIT_PSTREAM || + params->tsid <= WMI_MAX_THINSTREAM))) { + return -EINVAL; + } + + /* + * Check nominal PHY rate is >= minimalPHY, + * so that DUT can allow TSRS IE + */ + + /* Get the physical rate (units of bps) */ + min_phy = ((le32_to_cpu(params->min_phy_rate) / 1000) / 1000); + + /* Check minimal phy < nominal phy rate */ + if (params->nominal_phy >= min_phy) { + /* unit of 500 kbps */ + nominal_phy = (params->nominal_phy * 1000) / 500; + ath6kl_dbg(ATH6KL_DBG_WMI, + "TSRS IE enabled::MinPhy %x->NominalPhy ===> %x\n", + min_phy, nominal_phy); + + params->nominal_phy = nominal_phy; + } else { + params->nominal_phy = 0; + } + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + ath6kl_dbg(ATH6KL_DBG_WMI, + "sending create_pstream_cmd: ac=%d tsid:%d\n", + params->traffic_class, params->tsid); + + cmd = (struct wmi_create_pstream_cmd *) skb->data; + memcpy(cmd, params, sizeof(*cmd)); + + /* This is an implicitly created Fat pipe */ + if ((u32) params->tsid == (u32) WMI_IMPLICIT_PSTREAM) { + spin_lock_bh(&wmi->lock); + fatpipe_exist_for_ac = (wmi->fat_pipe_exist & + (1 << params->traffic_class)); + wmi->fat_pipe_exist |= (1 << params->traffic_class); + spin_unlock_bh(&wmi->lock); + } else { + /* explicitly created thin stream within a fat pipe */ + spin_lock_bh(&wmi->lock); + fatpipe_exist_for_ac = (wmi->fat_pipe_exist & + (1 << params->traffic_class)); + wmi->stream_exist_for_ac[params->traffic_class] |= + (1 << params->tsid); + /* + * If a thinstream becomes active, the fat pipe automatically + * becomes active + */ + wmi->fat_pipe_exist |= (1 << params->traffic_class); + spin_unlock_bh(&wmi->lock); + } + + /* + * Indicate activty change to driver layer only if this is the + * first TSID to get created in this AC explicitly or an implicit + * fat pipe is getting created. + */ + if (!fatpipe_exist_for_ac) + ath6kl_indicate_tx_activity(wmi->parent_dev, + params->traffic_class, true); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_CREATE_PSTREAM_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_delete_pstream_cmd(struct wmi *wmi, u8 traffic_class, u8 tsid) +{ + struct sk_buff *skb; + struct wmi_delete_pstream_cmd *cmd; + u16 active_tsids = 0; + int ret; + + if (traffic_class > 3) { + ath6kl_err("invalid traffic class: %d\n", traffic_class); + return -EINVAL; + } + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_delete_pstream_cmd *) skb->data; + cmd->traffic_class = traffic_class; + cmd->tsid = tsid; + + spin_lock_bh(&wmi->lock); + active_tsids = wmi->stream_exist_for_ac[traffic_class]; + spin_unlock_bh(&wmi->lock); + + if (!(active_tsids & (1 << tsid))) { + dev_kfree_skb(skb); + ath6kl_dbg(ATH6KL_DBG_WMI, + "TSID %d doesn't exist for traffic class: %d\n", + tsid, traffic_class); + return -ENODATA; + } + + ath6kl_dbg(ATH6KL_DBG_WMI, + "sending delete_pstream_cmd: traffic class: %d tsid=%d\n", + traffic_class, tsid); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_DELETE_PSTREAM_CMDID, + SYNC_BEFORE_WMIFLAG); + + spin_lock_bh(&wmi->lock); + wmi->stream_exist_for_ac[traffic_class] &= ~(1 << tsid); + active_tsids = wmi->stream_exist_for_ac[traffic_class]; + spin_unlock_bh(&wmi->lock); + + /* + * Indicate stream inactivity to driver layer only if all tsids + * within this AC are deleted. + */ + if (!active_tsids) { + ath6kl_indicate_tx_activity(wmi->parent_dev, + traffic_class, false); + wmi->fat_pipe_exist &= ~(1 << traffic_class); + } + + return ret; +} + +int ath6kl_wmi_set_ip_cmd(struct wmi *wmi, struct wmi_set_ip_cmd *ip_cmd) +{ + struct sk_buff *skb; + struct wmi_set_ip_cmd *cmd; + int ret; + + /* Multicast address are not valid */ + if ((*((u8 *) &ip_cmd->ips[0]) >= 0xE0) || + (*((u8 *) &ip_cmd->ips[1]) >= 0xE0)) + return -EINVAL; + + skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_ip_cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_set_ip_cmd *) skb->data; + memcpy(cmd, ip_cmd, sizeof(struct wmi_set_ip_cmd)); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_IP_CMDID, NO_SYNC_WMIFLAG); + return ret; +} + +static int ath6kl_wmi_get_wow_list_event_rx(struct wmi *wmi, u8 * datap, + int len) +{ + if (len < sizeof(struct wmi_get_wow_list_reply)) + return -EINVAL; + + return 0; +} + +static int ath6kl_wmi_cmd_send_xtnd(struct wmi *wmi, struct sk_buff *skb, + enum wmix_command_id cmd_id, + enum wmi_sync_flag sync_flag) +{ + struct wmix_cmd_hdr *cmd_hdr; + int ret; + + skb_push(skb, sizeof(struct wmix_cmd_hdr)); + + cmd_hdr = (struct wmix_cmd_hdr *) skb->data; + cmd_hdr->cmd_id = cpu_to_le32(cmd_id); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_EXTENSION_CMDID, sync_flag); + + return ret; +} + +int ath6kl_wmi_get_challenge_resp_cmd(struct wmi *wmi, u32 cookie, u32 source) +{ + struct sk_buff *skb; + struct wmix_hb_challenge_resp_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmix_hb_challenge_resp_cmd *) skb->data; + cmd->cookie = cpu_to_le32(cookie); + cmd->source = cpu_to_le32(source); + + ret = ath6kl_wmi_cmd_send_xtnd(wmi, skb, WMIX_HB_CHALLENGE_RESP_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_get_stats_cmd(struct wmi *wmi) +{ + return ath6kl_wmi_simple_cmd(wmi, WMI_GET_STATISTICS_CMDID); +} + +int ath6kl_wmi_set_tx_pwr_cmd(struct wmi *wmi, u8 dbM) +{ + struct sk_buff *skb; + struct wmi_set_tx_pwr_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_tx_pwr_cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_set_tx_pwr_cmd *) skb->data; + cmd->dbM = dbM; + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_TX_PWR_CMDID, + NO_SYNC_WMIFLAG); + + return ret; +} + +int ath6kl_wmi_get_tx_pwr_cmd(struct wmi *wmi) +{ + return ath6kl_wmi_simple_cmd(wmi, WMI_GET_TX_PWR_CMDID); +} + +void ath6kl_wmi_get_current_bssid(struct wmi *wmi, u8 *bssid) +{ + if (bssid) + memcpy(bssid, wmi->bssid, ETH_ALEN); +} + +int ath6kl_wmi_set_lpreamble_cmd(struct wmi *wmi, u8 status, u8 preamble_policy) +{ + struct sk_buff *skb; + struct wmi_set_lpreamble_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_lpreamble_cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_set_lpreamble_cmd *) skb->data; + cmd->status = status; + cmd->preamble_policy = preamble_policy; + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_LPREAMBLE_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_set_rts_cmd(struct wmi *wmi, u16 threshold) +{ + struct sk_buff *skb; + struct wmi_set_rts_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_rts_cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_set_rts_cmd *) skb->data; + cmd->threshold = cpu_to_le16(threshold); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_RTS_CMDID, NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_set_wmm_txop(struct wmi *wmi, enum wmi_txop_cfg cfg) +{ + struct sk_buff *skb; + struct wmi_set_wmm_txop_cmd *cmd; + int ret; + + if (!((cfg == WMI_TXOP_DISABLED) || (cfg == WMI_TXOP_ENABLED))) + return -EINVAL; + + skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_wmm_txop_cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_set_wmm_txop_cmd *) skb->data; + cmd->txop_enable = cfg; + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_WMM_TXOP_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +int ath6kl_wmi_set_keepalive_cmd(struct wmi *wmi, u8 keep_alive_intvl) +{ + struct sk_buff *skb; + struct wmi_set_keepalive_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_set_keepalive_cmd *) skb->data; + cmd->keep_alive_intvl = keep_alive_intvl; + wmi->keep_alive_intvl = keep_alive_intvl; + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_SET_KEEPALIVE_CMDID, + NO_SYNC_WMIFLAG); + return ret; +} + +s32 ath6kl_wmi_get_rate(s8 rate_index) +{ + if (rate_index == RATE_AUTO) + return 0; + + return wmi_rate_tbl[(u32) rate_index][0]; +} + +void ath6kl_wmi_node_return(struct wmi *wmi, struct bss *bss) +{ + if (bss) + wlan_node_return(&wmi->scan_table, bss); +} + +struct bss *ath6kl_wmi_find_ssid_node(struct wmi *wmi, u8 * ssid, + u32 ssid_len, bool is_wpa2, + bool match_ssid) +{ + struct bss *node = NULL; + + node = wlan_find_ssid_node(&wmi->scan_table, ssid, + ssid_len, is_wpa2, match_ssid); + return node; +} + +struct bss *ath6kl_wmi_find_node(struct wmi *wmi, const u8 * mac_addr) +{ + struct bss *ni = NULL; + + ni = wlan_find_node(&wmi->scan_table, mac_addr); + + return ni; +} + +void ath6kl_wmi_node_free(struct wmi *wmi, const u8 * mac_addr) +{ + struct bss *ni = NULL; + + ni = wlan_find_node(&wmi->scan_table, mac_addr); + if (ni != NULL) + wlan_node_reclaim(&wmi->scan_table, ni); + + return; +} + +static int ath6kl_wmi_get_pmkid_list_event_rx(struct wmi *wmi, u8 *datap, + u32 len) +{ + struct wmi_pmkid_list_reply *reply; + u32 expected_len; + + if (len < sizeof(struct wmi_pmkid_list_reply)) + return -EINVAL; + + reply = (struct wmi_pmkid_list_reply *)datap; + expected_len = sizeof(reply->num_pmkid) + + le32_to_cpu(reply->num_pmkid) * WMI_PMKID_LEN; + + if (len < expected_len) + return -EINVAL; + + return 0; +} + +static int ath6kl_wmi_addba_req_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_addba_req_event *cmd = (struct wmi_addba_req_event *) datap; + + aggr_recv_addba_req_evt(wmi->parent_dev, cmd->tid, + le16_to_cpu(cmd->st_seq_no), cmd->win_sz); + + return 0; +} + +static int ath6kl_wmi_delba_req_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_delba_event *cmd = (struct wmi_delba_event *) datap; + + aggr_recv_delba_req_evt(wmi->parent_dev, cmd->tid); + + return 0; +} + +/* AP mode functions */ +static int ath6kl_wmi_pspoll_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + struct wmi_pspoll_event *ev; + + if (len < sizeof(struct wmi_pspoll_event)) + return -EINVAL; + + ev = (struct wmi_pspoll_event *) datap; + + ath6kl_pspoll_event(wmi->parent_dev, le16_to_cpu(ev->aid)); + + return 0; +} + +static int ath6kl_wmi_dtimexpiry_event_rx(struct wmi *wmi, u8 *datap, int len) +{ + ath6kl_dtimexpiry_event(wmi->parent_dev); + + return 0; +} + +int ath6kl_wmi_set_pvb_cmd(struct wmi *wmi, u16 aid, bool flag) +{ + struct sk_buff *skb; + struct wmi_ap_set_pvb_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_ap_set_pvb_cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_ap_set_pvb_cmd *) skb->data; + cmd->aid = cpu_to_le16(aid); + cmd->flag = cpu_to_le32(flag); + + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_AP_SET_PVB_CMDID, + NO_SYNC_WMIFLAG); + + return 0; +} + +int ath6kl_wmi_set_rx_frame_format_cmd(struct wmi *wmi, u8 rx_meta_ver, + bool rx_dot11_hdr, bool defrag_on_host) +{ + struct sk_buff *skb; + struct wmi_rx_frame_format_cmd *cmd; + int ret; + + skb = ath6kl_wmi_get_new_buf(sizeof(*cmd)); + if (!skb) + return -ENOMEM; + + cmd = (struct wmi_rx_frame_format_cmd *) skb->data; + cmd->dot11_hdr = rx_dot11_hdr ? 1 : 0; + cmd->defrag_on_host = defrag_on_host ? 1 : 0; + cmd->meta_ver = rx_meta_ver; + + /* Delete the local aggr state, on host */ + ret = ath6kl_wmi_cmd_send(wmi, skb, WMI_RX_FRAME_FORMAT_CMDID, + NO_SYNC_WMIFLAG); + + return ret; +} + +static int ath6kl_wmi_control_rx_xtnd(struct wmi *wmi, struct sk_buff *skb) +{ + struct wmix_cmd_hdr *cmd; + u32 len; + u16 id; + u8 *datap; + int ret = 0; + + if (skb->len < sizeof(struct wmix_cmd_hdr)) { + ath6kl_err("bad packet 1\n"); + wmi->stat.cmd_len_err++; + return -EINVAL; + } + + cmd = (struct wmix_cmd_hdr *) skb->data; + id = le32_to_cpu(cmd->cmd_id); + + skb_pull(skb, sizeof(struct wmix_cmd_hdr)); + + datap = skb->data; + len = skb->len; + + switch (id) { + case WMIX_HB_CHALLENGE_RESP_EVENTID: + break; + case WMIX_DBGLOG_EVENTID: + break; + default: + ath6kl_err("unknown cmd id 0x%x\n", id); + wmi->stat.cmd_id_err++; + ret = -EINVAL; + break; + } + + return ret; +} + +/* Control Path */ +int ath6kl_wmi_control_rx(struct wmi *wmi, struct sk_buff *skb) +{ + struct wmi_cmd_hdr *cmd; + u32 len; + u16 id; + u8 *datap; + int ret = 0; + + if (WARN_ON(skb == NULL)) + return -EINVAL; + + if (skb->len < sizeof(struct wmi_cmd_hdr)) { + ath6kl_err("bad packet 1\n"); + dev_kfree_skb(skb); + wmi->stat.cmd_len_err++; + return -EINVAL; + } + + cmd = (struct wmi_cmd_hdr *) skb->data; + id = le16_to_cpu(cmd->cmd_id); + + skb_pull(skb, sizeof(struct wmi_cmd_hdr)); + + datap = skb->data; + len = skb->len; + + ath6kl_dbg(ATH6KL_DBG_WMI, "%s: wmi id: %d\n", __func__, id); + ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, "msg payload ", datap, len); + + switch (id) { + case WMI_GET_BITRATE_CMDID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_BITRATE_CMDID\n"); + ret = ath6kl_wmi_bitrate_reply_rx(wmi, datap, len); + break; + case WMI_GET_CHANNEL_LIST_CMDID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_CHANNEL_LIST_CMDID\n"); + ret = ath6kl_wmi_ch_list_reply_rx(wmi, datap, len); + break; + case WMI_GET_TX_PWR_CMDID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_TX_PWR_CMDID\n"); + ret = ath6kl_wmi_tx_pwr_reply_rx(wmi, datap, len); + break; + case WMI_READY_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_READY_EVENTID\n"); + ret = ath6kl_wmi_ready_event_rx(wmi, datap, len); + break; + case WMI_CONNECT_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_CONNECT_EVENTID\n"); + ret = ath6kl_wmi_connect_event_rx(wmi, datap, len); + break; + case WMI_DISCONNECT_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_DISCONNECT_EVENTID\n"); + ret = ath6kl_wmi_disconnect_event_rx(wmi, datap, len); + break; + case WMI_PEER_NODE_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_PEER_NODE_EVENTID\n"); + ret = ath6kl_wmi_peer_node_event_rx(wmi, datap, len); + break; + case WMI_TKIP_MICERR_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TKIP_MICERR_EVENTID\n"); + ret = ath6kl_wmi_tkip_micerr_event_rx(wmi, datap, len); + break; + case WMI_BSSINFO_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_BSSINFO_EVENTID\n"); + ath6kl_wmi_convert_bssinfo_hdr2_to_hdr(skb, datap); + ret = ath6kl_wmi_bssinfo_event_rx(wmi, skb->data, skb->len); + break; + case WMI_REGDOMAIN_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REGDOMAIN_EVENTID\n"); + break; + case WMI_PSTREAM_TIMEOUT_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_PSTREAM_TIMEOUT_EVENTID\n"); + ret = ath6kl_wmi_pstream_timeout_event_rx(wmi, datap, len); + break; + case WMI_NEIGHBOR_REPORT_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_NEIGHBOR_REPORT_EVENTID\n"); + break; + case WMI_SCAN_COMPLETE_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_SCAN_COMPLETE_EVENTID\n"); + ret = ath6kl_wmi_scan_complete_rx(wmi, datap, len); + break; + case WMI_CMDERROR_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_CMDERROR_EVENTID\n"); + ret = ath6kl_wmi_error_event_rx(wmi, datap, len); + break; + case WMI_REPORT_STATISTICS_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REPORT_STATISTICS_EVENTID\n"); + ret = ath6kl_wmi_stats_event_rx(wmi, datap, len); + break; + case WMI_RSSI_THRESHOLD_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_RSSI_THRESHOLD_EVENTID\n"); + ret = ath6kl_wmi_rssi_threshold_event_rx(wmi, datap, len); + break; + case WMI_ERROR_REPORT_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_ERROR_REPORT_EVENTID\n"); + break; + case WMI_OPT_RX_FRAME_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_OPT_RX_FRAME_EVENTID\n"); + ret = ath6kl_wmi_opt_frame_event_rx(wmi, datap, len); + break; + case WMI_REPORT_ROAM_TBL_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REPORT_ROAM_TBL_EVENTID\n"); + break; + case WMI_EXTENSION_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_EXTENSION_EVENTID\n"); + ret = ath6kl_wmi_control_rx_xtnd(wmi, skb); + break; + case WMI_CAC_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_CAC_EVENTID\n"); + ret = ath6kl_wmi_cac_event_rx(wmi, datap, len); + break; + case WMI_CHANNEL_CHANGE_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_CHANNEL_CHANGE_EVENTID\n"); + break; + case WMI_REPORT_ROAM_DATA_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REPORT_ROAM_DATA_EVENTID\n"); + break; + case WMI_GET_FIXRATES_CMDID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_FIXRATES_CMDID\n"); + ret = ath6kl_wmi_ratemask_reply_rx(wmi, datap, len); + break; + case WMI_TX_RETRY_ERR_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TX_RETRY_ERR_EVENTID\n"); + break; + case WMI_SNR_THRESHOLD_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_SNR_THRESHOLD_EVENTID\n"); + ret = ath6kl_wmi_snr_threshold_event_rx(wmi, datap, len); + break; + case WMI_LQ_THRESHOLD_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_LQ_THRESHOLD_EVENTID\n"); + break; + case WMI_APLIST_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_APLIST_EVENTID\n"); + ret = ath6kl_wmi_aplist_event_rx(wmi, datap, len); + break; + case WMI_GET_KEEPALIVE_CMDID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_KEEPALIVE_CMDID\n"); + ret = ath6kl_wmi_keepalive_reply_rx(wmi, datap, len); + break; + case WMI_GET_WOW_LIST_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_WOW_LIST_EVENTID\n"); + ret = ath6kl_wmi_get_wow_list_event_rx(wmi, datap, len); + break; + case WMI_GET_PMKID_LIST_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_PMKID_LIST_EVENTID\n"); + ret = ath6kl_wmi_get_pmkid_list_event_rx(wmi, datap, len); + break; + case WMI_PSPOLL_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_PSPOLL_EVENTID\n"); + ret = ath6kl_wmi_pspoll_event_rx(wmi, datap, len); + break; + case WMI_DTIMEXPIRY_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_DTIMEXPIRY_EVENTID\n"); + ret = ath6kl_wmi_dtimexpiry_event_rx(wmi, datap, len); + break; + case WMI_SET_PARAMS_REPLY_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_SET_PARAMS_REPLY_EVENTID\n"); + break; + case WMI_ADDBA_REQ_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_ADDBA_REQ_EVENTID\n"); + ret = ath6kl_wmi_addba_req_event_rx(wmi, datap, len); + break; + case WMI_ADDBA_RESP_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_ADDBA_RESP_EVENTID\n"); + break; + case WMI_DELBA_REQ_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_DELBA_REQ_EVENTID\n"); + ret = ath6kl_wmi_delba_req_event_rx(wmi, datap, len); + break; + case WMI_REPORT_BTCOEX_CONFIG_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, + "WMI_REPORT_BTCOEX_CONFIG_EVENTID\n"); + break; + case WMI_REPORT_BTCOEX_STATS_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, + "WMI_REPORT_BTCOEX_STATS_EVENTID\n"); + break; + case WMI_TX_COMPLETE_EVENTID: + ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TX_COMPLETE_EVENTID\n"); + ret = ath6kl_wmi_tx_complete_event_rx(datap, len); + break; + default: + ath6kl_dbg(ATH6KL_DBG_WMI, "unknown cmd id 0x%x\n", id); + wmi->stat.cmd_id_err++; + ret = -EINVAL; + break; + } + + dev_kfree_skb(skb); + + return ret; +} + +static void ath6kl_wmi_qos_state_init(struct wmi *wmi) +{ + if (!wmi) + return; + + spin_lock_bh(&wmi->lock); + + wmi->fat_pipe_exist = 0; + memset(wmi->stream_exist_for_ac, 0, sizeof(wmi->stream_exist_for_ac)); + + spin_unlock_bh(&wmi->lock); +} + +void *ath6kl_wmi_init(void *dev) +{ + struct wmi *wmi; + + wmi = kzalloc(sizeof(struct wmi), GFP_KERNEL); + if (!wmi) + return NULL; + + spin_lock_init(&wmi->lock); + + wmi->parent_dev = dev; + + wlan_node_table_init(wmi, &wmi->scan_table); + ath6kl_wmi_qos_state_init(wmi); + + wmi->pwr_mode = REC_POWER; + wmi->phy_mode = WMI_11G_MODE; + + wmi->pair_crypto_type = NONE_CRYPT; + wmi->grp_crypto_type = NONE_CRYPT; + + wmi->ht_allowed[A_BAND_24GHZ] = 1; + wmi->ht_allowed[A_BAND_5GHZ] = 1; + + return wmi; +} + +void ath6kl_wmi_shutdown(struct wmi *wmi) +{ + if (!wmi) + return; + + wlan_node_table_cleanup(&wmi->scan_table); + kfree(wmi); +} diff --git a/drivers/net/wireless/ath/ath6kl/wmi.h b/drivers/net/wireless/ath/ath6kl/wmi.h new file mode 100644 index 000000000000..bbaa7049f4a8 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/wmi.h @@ -0,0 +1,2024 @@ +/* + * Copyright (c) 2010-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * This file contains the definitions of the WMI protocol specified in the + * Wireless Module Interface (WMI). It includes definitions of all the + * commands and events. Commands are messages from the host to the WM. + * Events and Replies are messages from the WM to the host. + */ + +#ifndef WMI_H +#define WMI_H + +#include <linux/ieee80211.h> + +#include "htc.h" + +#define HTC_PROTOCOL_VERSION 0x0002 +#define WMI_PROTOCOL_VERSION 0x0002 +#define WMI_CONTROL_MSG_MAX_LEN 256 +#define is_ethertype(type_or_len) ((type_or_len) >= 0x0600) + +#define IP_ETHERTYPE 0x0800 + +#define WMI_IMPLICIT_PSTREAM 0xFF +#define WMI_MAX_THINSTREAM 15 + +#define SSID_IE_LEN_INDEX 13 + +/* Host side link management data structures */ +#define SIG_QUALITY_THRESH_LVLS 6 +#define SIG_QUALITY_UPPER_THRESH_LVLS SIG_QUALITY_THRESH_LVLS +#define SIG_QUALITY_LOWER_THRESH_LVLS SIG_QUALITY_THRESH_LVLS + +#define A_BAND_24GHZ 0 +#define A_BAND_5GHZ 1 +#define A_NUM_BANDS 2 + +/* in ms */ +#define WMI_IMPLICIT_PSTREAM_INACTIVITY_INT 5000 + +/* + * There are no signed versions of __le16 and __le32, so for a temporary + * solution come up with our own version. The idea is from fs/ntfs/types.h. + * + * Use a_ prefix so that it doesn't conflict if we get proper support to + * linux/types.h. + */ +typedef __s16 __bitwise a_sle16; +typedef __s32 __bitwise a_sle32; + +static inline a_sle32 a_cpu_to_sle32(s32 val) +{ + return (__force a_sle32) cpu_to_le32(val); +} + +static inline s32 a_sle32_to_cpu(a_sle32 val) +{ + return le32_to_cpu((__force __le32) val); +} + +static inline a_sle16 a_cpu_to_sle16(s16 val) +{ + return (__force a_sle16) cpu_to_le16(val); +} + +static inline s16 a_sle16_to_cpu(a_sle16 val) +{ + return le16_to_cpu((__force __le16) val); +} + +struct sq_threshold_params { + s16 upper_threshold[SIG_QUALITY_UPPER_THRESH_LVLS]; + s16 lower_threshold[SIG_QUALITY_LOWER_THRESH_LVLS]; + u32 upper_threshold_valid_count; + u32 lower_threshold_valid_count; + u32 polling_interval; + u8 weight; + u8 last_rssi; + u8 last_rssi_poll_event; +}; + +struct wmi_stats { + u32 cmd_len_err; + u32 cmd_id_err; +}; + +struct wmi_data_sync_bufs { + u8 traffic_class; + struct sk_buff *skb; +}; + +/* WMM stream classes */ +#define WMM_NUM_AC 4 +#define WMM_AC_BE 0 /* best effort */ +#define WMM_AC_BK 1 /* background */ +#define WMM_AC_VI 2 /* video */ +#define WMM_AC_VO 3 /* voice */ + +struct wmi { + bool ready; + u16 stream_exist_for_ac[WMM_NUM_AC]; + u8 fat_pipe_exist; + void *parent_dev; + struct wmi_stats stat; + struct ath6kl_node_table scan_table; + u8 bssid[ETH_ALEN]; + u8 pwr_mode; + u8 phy_mode; + u8 keep_alive_intvl; + spinlock_t lock; + enum htc_endpoint_id ep_id; + struct sq_threshold_params + sq_threshld[SIGNAL_QUALITY_METRICS_NUM_MAX]; + enum crypto_type pair_crypto_type; + enum crypto_type grp_crypto_type; + bool is_wmm_enabled; + u8 ht_allowed[A_NUM_BANDS]; + u8 traffic_class; + bool is_probe_ssid; +}; + +struct host_app_area { + u32 wmi_protocol_ver; +}; + +enum wmi_msg_type { + DATA_MSGTYPE = 0x0, + CNTL_MSGTYPE, + SYNC_MSGTYPE, + OPT_MSGTYPE, +}; + +/* + * Macros for operating on WMI_DATA_HDR (info) field + */ + +#define WMI_DATA_HDR_MSG_TYPE_MASK 0x03 +#define WMI_DATA_HDR_MSG_TYPE_SHIFT 0 +#define WMI_DATA_HDR_UP_MASK 0x07 +#define WMI_DATA_HDR_UP_SHIFT 2 + +/* In AP mode, the same bit (b5) is used to indicate Power save state in + * the Rx dir and More data bit state in the tx direction. + */ +#define WMI_DATA_HDR_PS_MASK 0x1 +#define WMI_DATA_HDR_PS_SHIFT 5 + +#define WMI_DATA_HDR_MORE_MASK 0x1 +#define WMI_DATA_HDR_MORE_SHIFT 5 + +enum wmi_data_hdr_data_type { + WMI_DATA_HDR_DATA_TYPE_802_3 = 0, + WMI_DATA_HDR_DATA_TYPE_802_11, + + /* used to be used for the PAL */ + WMI_DATA_HDR_DATA_TYPE_ACL, +}; + +#define WMI_DATA_HDR_DATA_TYPE_MASK 0x3 +#define WMI_DATA_HDR_DATA_TYPE_SHIFT 6 + +/* Macros for operating on WMI_DATA_HDR (info2) field */ +#define WMI_DATA_HDR_SEQNO_MASK 0xFFF +#define WMI_DATA_HDR_SEQNO_SHIFT 0 + +#define WMI_DATA_HDR_AMSDU_MASK 0x1 +#define WMI_DATA_HDR_AMSDU_SHIFT 12 + +#define WMI_DATA_HDR_META_MASK 0x7 +#define WMI_DATA_HDR_META_SHIFT 13 + +struct wmi_data_hdr { + s8 rssi; + + /* + * usage of 'info' field(8-bit): + * + * b1:b0 - WMI_MSG_TYPE + * b4:b3:b2 - UP(tid) + * b5 - Used in AP mode. + * More-data in tx dir, PS in rx. + * b7:b6 - Dot3 header(0), + * Dot11 Header(1), + * ACL data(2) + */ + u8 info; + + /* + * usage of 'info2' field(16-bit): + * + * b11:b0 - seq_no + * b12 - A-MSDU? + * b15:b13 - META_DATA_VERSION 0 - 7 + */ + __le16 info2; + __le16 info3; +} __packed; + +static inline u8 wmi_data_hdr_get_up(struct wmi_data_hdr *dhdr) +{ + return (dhdr->info >> WMI_DATA_HDR_UP_SHIFT) & WMI_DATA_HDR_UP_MASK; +} + +static inline void wmi_data_hdr_set_up(struct wmi_data_hdr *dhdr, + u8 usr_pri) +{ + dhdr->info &= ~(WMI_DATA_HDR_UP_MASK << WMI_DATA_HDR_UP_SHIFT); + dhdr->info |= usr_pri << WMI_DATA_HDR_UP_SHIFT; +} + +static inline u8 wmi_data_hdr_get_dot11(struct wmi_data_hdr *dhdr) +{ + u8 data_type; + + data_type = (dhdr->info >> WMI_DATA_HDR_DATA_TYPE_SHIFT) & + WMI_DATA_HDR_DATA_TYPE_MASK; + return (data_type == WMI_DATA_HDR_DATA_TYPE_802_11); +} + +static inline u16 wmi_data_hdr_get_seqno(struct wmi_data_hdr *dhdr) +{ + return (le16_to_cpu(dhdr->info2) >> WMI_DATA_HDR_SEQNO_SHIFT) & + WMI_DATA_HDR_SEQNO_MASK; +} + +static inline u8 wmi_data_hdr_is_amsdu(struct wmi_data_hdr *dhdr) +{ + return (le16_to_cpu(dhdr->info2) >> WMI_DATA_HDR_AMSDU_SHIFT) & + WMI_DATA_HDR_AMSDU_MASK; +} + +static inline u8 wmi_data_hdr_get_meta(struct wmi_data_hdr *dhdr) +{ + return (le16_to_cpu(dhdr->info2) >> WMI_DATA_HDR_META_SHIFT) & + WMI_DATA_HDR_META_MASK; +} + +/* Tx meta version definitions */ +#define WMI_MAX_TX_META_SZ 12 +#define WMI_META_VERSION_1 0x01 +#define WMI_META_VERSION_2 0x02 + +struct wmi_tx_meta_v1 { + /* packet ID to identify the tx request */ + u8 pkt_id; + + /* rate policy to be used for the tx of this frame */ + u8 rate_plcy_id; +} __packed; + +struct wmi_tx_meta_v2 { + /* + * Offset from start of the WMI header for csum calculation to + * begin. + */ + u8 csum_start; + + /* offset from start of WMI header where final csum goes */ + u8 csum_dest; + + /* no of bytes over which csum is calculated */ + u8 csum_flags; +} __packed; + +struct wmi_rx_meta_v1 { + u8 status; + + /* rate index mapped to rate at which this packet was received. */ + u8 rix; + + /* rssi of packet */ + u8 rssi; + + /* rf channel during packet reception */ + u8 channel; + + __le16 flags; +} __packed; + +struct wmi_rx_meta_v2 { + __le16 csum; + + /* bit 0 set -partial csum valid bit 1 set -test mode */ + u8 csum_flags; +} __packed; + +/* Control Path */ +struct wmi_cmd_hdr { + __le16 cmd_id; + + /* info1 - 16 bits + * b03:b00 - id + * b15:b04 - unused */ + __le16 info1; + + /* for alignment */ + __le16 reserved; +} __packed; + +/* List of WMI commands */ +enum wmi_cmd_id { + WMI_CONNECT_CMDID = 0x0001, + WMI_RECONNECT_CMDID, + WMI_DISCONNECT_CMDID, + WMI_SYNCHRONIZE_CMDID, + WMI_CREATE_PSTREAM_CMDID, + WMI_DELETE_PSTREAM_CMDID, + WMI_START_SCAN_CMDID, + WMI_SET_SCAN_PARAMS_CMDID, + WMI_SET_BSS_FILTER_CMDID, + WMI_SET_PROBED_SSID_CMDID, /* 10 */ + WMI_SET_LISTEN_INT_CMDID, + WMI_SET_BMISS_TIME_CMDID, + WMI_SET_DISC_TIMEOUT_CMDID, + WMI_GET_CHANNEL_LIST_CMDID, + WMI_SET_BEACON_INT_CMDID, + WMI_GET_STATISTICS_CMDID, + WMI_SET_CHANNEL_PARAMS_CMDID, + WMI_SET_POWER_MODE_CMDID, + WMI_SET_IBSS_PM_CAPS_CMDID, + WMI_SET_POWER_PARAMS_CMDID, /* 20 */ + WMI_SET_POWERSAVE_TIMERS_POLICY_CMDID, + WMI_ADD_CIPHER_KEY_CMDID, + WMI_DELETE_CIPHER_KEY_CMDID, + WMI_ADD_KRK_CMDID, + WMI_DELETE_KRK_CMDID, + WMI_SET_PMKID_CMDID, + WMI_SET_TX_PWR_CMDID, + WMI_GET_TX_PWR_CMDID, + WMI_SET_ASSOC_INFO_CMDID, + WMI_ADD_BAD_AP_CMDID, /* 30 */ + WMI_DELETE_BAD_AP_CMDID, + WMI_SET_TKIP_COUNTERMEASURES_CMDID, + WMI_RSSI_THRESHOLD_PARAMS_CMDID, + WMI_TARGET_ERROR_REPORT_BITMASK_CMDID, + WMI_SET_ACCESS_PARAMS_CMDID, + WMI_SET_RETRY_LIMITS_CMDID, + WMI_SET_OPT_MODE_CMDID, + WMI_OPT_TX_FRAME_CMDID, + WMI_SET_VOICE_PKT_SIZE_CMDID, + WMI_SET_MAX_SP_LEN_CMDID, /* 40 */ + WMI_SET_ROAM_CTRL_CMDID, + WMI_GET_ROAM_TBL_CMDID, + WMI_GET_ROAM_DATA_CMDID, + WMI_ENABLE_RM_CMDID, + WMI_SET_MAX_OFFHOME_DURATION_CMDID, + WMI_EXTENSION_CMDID, /* Non-wireless extensions */ + WMI_SNR_THRESHOLD_PARAMS_CMDID, + WMI_LQ_THRESHOLD_PARAMS_CMDID, + WMI_SET_LPREAMBLE_CMDID, + WMI_SET_RTS_CMDID, /* 50 */ + WMI_CLR_RSSI_SNR_CMDID, + WMI_SET_FIXRATES_CMDID, + WMI_GET_FIXRATES_CMDID, + WMI_SET_AUTH_MODE_CMDID, + WMI_SET_REASSOC_MODE_CMDID, + WMI_SET_WMM_CMDID, + WMI_SET_WMM_TXOP_CMDID, + WMI_TEST_CMDID, + + /* COEX AR6002 only */ + WMI_SET_BT_STATUS_CMDID, + WMI_SET_BT_PARAMS_CMDID, /* 60 */ + + WMI_SET_KEEPALIVE_CMDID, + WMI_GET_KEEPALIVE_CMDID, + WMI_SET_APPIE_CMDID, + WMI_GET_APPIE_CMDID, + WMI_SET_WSC_STATUS_CMDID, + + /* Wake on Wireless */ + WMI_SET_HOST_SLEEP_MODE_CMDID, + WMI_SET_WOW_MODE_CMDID, + WMI_GET_WOW_LIST_CMDID, + WMI_ADD_WOW_PATTERN_CMDID, + WMI_DEL_WOW_PATTERN_CMDID, /* 70 */ + + WMI_SET_FRAMERATES_CMDID, + WMI_SET_AP_PS_CMDID, + WMI_SET_QOS_SUPP_CMDID, + + /* WMI_THIN_RESERVED_... mark the start and end + * values for WMI_THIN_RESERVED command IDs. These + * command IDs can be found in wmi_thin.h */ + WMI_THIN_RESERVED_START = 0x8000, + WMI_THIN_RESERVED_END = 0x8fff, + + /* Developer commands starts at 0xF000 */ + WMI_SET_BITRATE_CMDID = 0xF000, + WMI_GET_BITRATE_CMDID, + WMI_SET_WHALPARAM_CMDID, + WMI_SET_MAC_ADDRESS_CMDID, + WMI_SET_AKMP_PARAMS_CMDID, + WMI_SET_PMKID_LIST_CMDID, + WMI_GET_PMKID_LIST_CMDID, + WMI_ABORT_SCAN_CMDID, + WMI_SET_TARGET_EVENT_REPORT_CMDID, + + /* Unused */ + WMI_UNUSED1, + WMI_UNUSED2, + + /* AP mode commands */ + WMI_AP_HIDDEN_SSID_CMDID, + WMI_AP_SET_NUM_STA_CMDID, + WMI_AP_ACL_POLICY_CMDID, + WMI_AP_ACL_MAC_LIST_CMDID, + WMI_AP_CONFIG_COMMIT_CMDID, + WMI_AP_SET_MLME_CMDID, + WMI_AP_SET_PVB_CMDID, + WMI_AP_CONN_INACT_CMDID, + WMI_AP_PROT_SCAN_TIME_CMDID, + WMI_AP_SET_COUNTRY_CMDID, + WMI_AP_SET_DTIM_CMDID, + WMI_AP_MODE_STAT_CMDID, + + WMI_SET_IP_CMDID, + WMI_SET_PARAMS_CMDID, + WMI_SET_MCAST_FILTER_CMDID, + WMI_DEL_MCAST_FILTER_CMDID, + + WMI_ALLOW_AGGR_CMDID, + WMI_ADDBA_REQ_CMDID, + WMI_DELBA_REQ_CMDID, + WMI_SET_HT_CAP_CMDID, + WMI_SET_HT_OP_CMDID, + WMI_SET_TX_SELECT_RATES_CMDID, + WMI_SET_TX_SGI_PARAM_CMDID, + WMI_SET_RATE_POLICY_CMDID, + + WMI_HCI_CMD_CMDID, + WMI_RX_FRAME_FORMAT_CMDID, + WMI_SET_THIN_MODE_CMDID, + WMI_SET_BT_WLAN_CONN_PRECEDENCE_CMDID, + + WMI_AP_SET_11BG_RATESET_CMDID, + WMI_SET_PMK_CMDID, + WMI_MCAST_FILTER_CMDID, + + /* COEX CMDID AR6003 */ + WMI_SET_BTCOEX_FE_ANT_CMDID, + WMI_SET_BTCOEX_COLOCATED_BT_DEV_CMDID, + WMI_SET_BTCOEX_SCO_CONFIG_CMDID, + WMI_SET_BTCOEX_A2DP_CONFIG_CMDID, + WMI_SET_BTCOEX_ACLCOEX_CONFIG_CMDID, + WMI_SET_BTCOEX_BTINQUIRY_PAGE_CONFIG_CMDID, + WMI_SET_BTCOEX_DEBUG_CMDID, + WMI_SET_BTCOEX_BT_OPERATING_STATUS_CMDID, + WMI_GET_BTCOEX_STATS_CMDID, + WMI_GET_BTCOEX_CONFIG_CMDID, + + WMI_SET_DFS_ENABLE_CMDID, /* F034 */ + WMI_SET_DFS_MINRSSITHRESH_CMDID, + WMI_SET_DFS_MAXPULSEDUR_CMDID, + WMI_DFS_RADAR_DETECTED_CMDID, + + /* P2P commands */ + WMI_P2P_SET_CONFIG_CMDID, /* F038 */ + WMI_WPS_SET_CONFIG_CMDID, + WMI_SET_REQ_DEV_ATTR_CMDID, + WMI_P2P_FIND_CMDID, + WMI_P2P_STOP_FIND_CMDID, + WMI_P2P_GO_NEG_START_CMDID, + WMI_P2P_LISTEN_CMDID, + + WMI_CONFIG_TX_MAC_RULES_CMDID, /* F040 */ + WMI_SET_PROMISCUOUS_MODE_CMDID, + WMI_RX_FRAME_FILTER_CMDID, + WMI_SET_CHANNEL_CMDID, + + /* WAC commands */ + WMI_ENABLE_WAC_CMDID, + WMI_WAC_SCAN_REPLY_CMDID, + WMI_WAC_CTRL_REQ_CMDID, + WMI_SET_DIV_PARAMS_CMDID, + + WMI_GET_PMK_CMDID, + WMI_SET_PASSPHRASE_CMDID, + WMI_SEND_ASSOC_RES_CMDID, + WMI_SET_ASSOC_REQ_RELAY_CMDID, + WMI_GET_RFKILL_MODE_CMDID, + + /* ACS command, consists of sub-commands */ + WMI_ACS_CTRL_CMDID, + + /* Ultra low power store / recall commands */ + WMI_STORERECALL_CONFIGURE_CMDID, + WMI_STORERECALL_RECALL_CMDID, + WMI_STORERECALL_HOST_READY_CMDID, + WMI_FORCE_TARGET_ASSERT_CMDID, + WMI_SET_EXCESS_TX_RETRY_THRES_CMDID, +}; + +/* WMI_CONNECT_CMDID */ +enum network_type { + INFRA_NETWORK = 0x01, + ADHOC_NETWORK = 0x02, + ADHOC_CREATOR = 0x04, + AP_NETWORK = 0x10, +}; + +enum dot11_auth_mode { + OPEN_AUTH = 0x01, + SHARED_AUTH = 0x02, + + /* different from IEEE_AUTH_MODE definitions */ + LEAP_AUTH = 0x04, +}; + +enum { + AUTH_IDLE, + AUTH_OPEN_IN_PROGRESS, +}; + +enum auth_mode { + NONE_AUTH = 0x01, + WPA_AUTH = 0x02, + WPA2_AUTH = 0x04, + WPA_PSK_AUTH = 0x08, + WPA2_PSK_AUTH = 0x10, + WPA_AUTH_CCKM = 0x20, + WPA2_AUTH_CCKM = 0x40, +}; + +#define WMI_MIN_CRYPTO_TYPE NONE_CRYPT +#define WMI_MAX_CRYPTO_TYPE (AES_CRYPT + 1) + +#define WMI_MIN_KEY_INDEX 0 +#define WMI_MAX_KEY_INDEX 3 + +#define WMI_MAX_KEY_LEN 32 + +/* + * NB: these values are ordered carefully; there are lots of + * of implications in any reordering. In particular beware + * that 4 is not used to avoid conflicting with IEEE80211_F_PRIVACY. + */ +#define ATH6KL_CIPHER_WEP 0 +#define ATH6KL_CIPHER_TKIP 1 +#define ATH6KL_CIPHER_AES_OCB 2 +#define ATH6KL_CIPHER_AES_CCM 3 +#define ATH6KL_CIPHER_CKIP 5 +#define ATH6KL_CIPHER_CCKM_KRK 6 +#define ATH6KL_CIPHER_NONE 7 /* pseudo value */ + +/* + * 802.11 rate set. + */ +#define ATH6KL_RATE_MAXSIZE 15 /* max rates we'll handle */ + +#define ATH_OUI_TYPE 0x01 +#define WPA_OUI_TYPE 0x01 +#define WMM_PARAM_OUI_SUBTYPE 0x01 +#define WMM_OUI_TYPE 0x02 +#define WSC_OUT_TYPE 0x04 + +enum wmi_connect_ctrl_flags_bits { + CONNECT_ASSOC_POLICY_USER = 0x0001, + CONNECT_SEND_REASSOC = 0x0002, + CONNECT_IGNORE_WPAx_GROUP_CIPHER = 0x0004, + CONNECT_PROFILE_MATCH_DONE = 0x0008, + CONNECT_IGNORE_AAC_BEACON = 0x0010, + CONNECT_CSA_FOLLOW_BSS = 0x0020, + CONNECT_DO_WPA_OFFLOAD = 0x0040, + CONNECT_DO_NOT_DEAUTH = 0x0080, +}; + +struct wmi_connect_cmd { + u8 nw_type; + u8 dot11_auth_mode; + u8 auth_mode; + u8 prwise_crypto_type; + u8 prwise_crypto_len; + u8 grp_crypto_type; + u8 grp_crypto_len; + u8 ssid_len; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + __le16 ch; + u8 bssid[ETH_ALEN]; + __le32 ctrl_flags; +} __packed; + +/* WMI_RECONNECT_CMDID */ +struct wmi_reconnect_cmd { + /* channel hint */ + __le16 channel; + + /* mandatory if set */ + u8 bssid[ETH_ALEN]; +} __packed; + +/* WMI_ADD_CIPHER_KEY_CMDID */ +enum key_usage { + PAIRWISE_USAGE = 0x00, + GROUP_USAGE = 0x01, + + /* default Tx Key - static WEP only */ + TX_USAGE = 0x02, +}; + +/* + * Bit Flag + * Bit 0 - Initialise TSC - default is Initialize + */ +#define KEY_OP_INIT_TSC 0x01 +#define KEY_OP_INIT_RSC 0x02 + +/* default initialise the TSC & RSC */ +#define KEY_OP_INIT_VAL 0x03 +#define KEY_OP_VALID_MASK 0x03 + +struct wmi_add_cipher_key_cmd { + u8 key_index; + u8 key_type; + + /* enum key_usage */ + u8 key_usage; + + u8 key_len; + + /* key replay sequence counter */ + u8 key_rsc[8]; + + u8 key[WLAN_MAX_KEY_LEN]; + + /* additional key control info */ + u8 key_op_ctrl; + + u8 key_mac_addr[ETH_ALEN]; +} __packed; + +/* WMI_DELETE_CIPHER_KEY_CMDID */ +struct wmi_delete_cipher_key_cmd { + u8 key_index; +} __packed; + +#define WMI_KRK_LEN 16 + +/* WMI_ADD_KRK_CMDID */ +struct wmi_add_krk_cmd { + u8 krk[WMI_KRK_LEN]; +} __packed; + +/* WMI_SETPMKID_CMDID */ + +#define WMI_PMKID_LEN 16 + +enum pmkid_enable_flg { + PMKID_DISABLE = 0, + PMKID_ENABLE = 1, +}; + +struct wmi_setpmkid_cmd { + u8 bssid[ETH_ALEN]; + + /* enum pmkid_enable_flg */ + u8 enable; + + u8 pmkid[WMI_PMKID_LEN]; +} __packed; + +/* WMI_START_SCAN_CMD */ +enum wmi_scan_type { + WMI_LONG_SCAN = 0, + WMI_SHORT_SCAN = 1, +}; + +struct wmi_start_scan_cmd { + __le32 force_fg_scan; + + /* for legacy cisco AP compatibility */ + __le32 is_legacy; + + /* max duration in the home channel(msec) */ + __le32 home_dwell_time; + + /* time interval between scans (msec) */ + __le32 force_scan_intvl; + + /* enum wmi_scan_type */ + u8 scan_type; + + /* how many channels follow */ + u8 num_ch; + + /* channels in Mhz */ + __le16 ch_list[1]; +} __packed; + +/* WMI_SET_SCAN_PARAMS_CMDID */ +#define WMI_SHORTSCANRATIO_DEFAULT 3 + +/* + * Warning: scan control flag value of 0xFF is used to disable + * all flags in WMI_SCAN_PARAMS_CMD. Do not add any more + * flags here + */ +enum wmi_scan_ctrl_flags_bits { + + /* set if can scan in the connect cmd */ + CONNECT_SCAN_CTRL_FLAGS = 0x01, + + /* set if scan for the SSID it is already connected to */ + SCAN_CONNECTED_CTRL_FLAGS = 0x02, + + /* set if enable active scan */ + ACTIVE_SCAN_CTRL_FLAGS = 0x04, + + /* set if enable roam scan when bmiss and lowrssi */ + ROAM_SCAN_CTRL_FLAGS = 0x08, + + /* set if follows customer BSSINFO reporting rule */ + REPORT_BSSINFO_CTRL_FLAGS = 0x10, + + /* if disabled, target doesn't scan after a disconnect event */ + ENABLE_AUTO_CTRL_FLAGS = 0x20, + + /* + * Scan complete event with canceled status will be generated when + * a scan is prempted before it gets completed. + */ + ENABLE_SCAN_ABORT_EVENT = 0x40 +}; + +#define DEFAULT_SCAN_CTRL_FLAGS \ + (CONNECT_SCAN_CTRL_FLAGS | \ + SCAN_CONNECTED_CTRL_FLAGS | \ + ACTIVE_SCAN_CTRL_FLAGS | \ + ROAM_SCAN_CTRL_FLAGS | \ + ENABLE_AUTO_CTRL_FLAGS) + +struct wmi_scan_params_cmd { + /* sec */ + __le16 fg_start_period; + + /* sec */ + __le16 fg_end_period; + + /* sec */ + __le16 bg_period; + + /* msec */ + __le16 maxact_chdwell_time; + + /* msec */ + __le16 pas_chdwell_time; + + /* how many shorts scan for one long */ + u8 short_scan_ratio; + + u8 scan_ctrl_flags; + + /* msec */ + __le16 minact_chdwell_time; + + /* max active scans per ssid */ + __le16 maxact_scan_per_ssid; + + /* msecs */ + __le32 max_dfsch_act_time; +} __packed; + +/* WMI_SET_BSS_FILTER_CMDID */ +enum wmi_bss_filter { + /* no beacons forwarded */ + NONE_BSS_FILTER = 0x0, + + /* all beacons forwarded */ + ALL_BSS_FILTER, + + /* only beacons matching profile */ + PROFILE_FILTER, + + /* all but beacons matching profile */ + ALL_BUT_PROFILE_FILTER, + + /* only beacons matching current BSS */ + CURRENT_BSS_FILTER, + + /* all but beacons matching BSS */ + ALL_BUT_BSS_FILTER, + + /* beacons matching probed ssid */ + PROBED_SSID_FILTER, + + /* marker only */ + LAST_BSS_FILTER, +}; + +struct wmi_bss_filter_cmd { + /* see, enum wmi_bss_filter */ + u8 bss_filter; + + /* for alignment */ + u8 reserved1; + + /* for alignment */ + __le16 reserved2; + + __le32 ie_mask; +} __packed; + +/* WMI_SET_PROBED_SSID_CMDID */ +#define MAX_PROBED_SSID_INDEX 9 + +enum wmi_ssid_flag { + /* disables entry */ + DISABLE_SSID_FLAG = 0, + + /* probes specified ssid */ + SPECIFIC_SSID_FLAG = 0x01, + + /* probes for any ssid */ + ANY_SSID_FLAG = 0x02, +}; + +struct wmi_probed_ssid_cmd { + /* 0 to MAX_PROBED_SSID_INDEX */ + u8 entry_index; + + /* see, enum wmi_ssid_flg */ + u8 flag; + + u8 ssid_len; + u8 ssid[IEEE80211_MAX_SSID_LEN]; +} __packed; + +/* + * WMI_SET_LISTEN_INT_CMDID + * The Listen interval is between 15 and 3000 TUs + */ +struct wmi_listen_int_cmd { + __le16 listen_intvl; + __le16 num_beacons; +} __packed; + +/* WMI_SET_POWER_MODE_CMDID */ +enum wmi_power_mode { + REC_POWER = 0x01, + MAX_PERF_POWER, +}; + +struct wmi_power_mode_cmd { + /* see, enum wmi_power_mode */ + u8 pwr_mode; +} __packed; + +/* + * Policy to determnine whether power save failure event should be sent to + * host during scanning + */ +enum power_save_fail_event_policy { + SEND_POWER_SAVE_FAIL_EVENT_ALWAYS = 1, + IGNORE_POWER_SAVE_FAIL_EVENT_DURING_SCAN = 2, +}; + +struct wmi_power_params_cmd { + /* msec */ + __le16 idle_period; + + __le16 pspoll_number; + __le16 dtim_policy; + __le16 tx_wakeup_policy; + __le16 num_tx_to_wakeup; + __le16 ps_fail_event_policy; +} __packed; + +/* WMI_SET_DISC_TIMEOUT_CMDID */ +struct wmi_disc_timeout_cmd { + /* seconds */ + u8 discon_timeout; +} __packed; + +enum dir_type { + UPLINK_TRAFFIC = 0, + DNLINK_TRAFFIC = 1, + BIDIR_TRAFFIC = 2, +}; + +enum voiceps_cap_type { + DISABLE_FOR_THIS_AC = 0, + ENABLE_FOR_THIS_AC = 1, + ENABLE_FOR_ALL_AC = 2, +}; + +enum traffic_type { + TRAFFIC_TYPE_APERIODIC = 0, + TRAFFIC_TYPE_PERIODIC = 1, +}; + +/* WMI_SYNCHRONIZE_CMDID */ +struct wmi_sync_cmd { + u8 data_sync_map; +} __packed; + +/* WMI_CREATE_PSTREAM_CMDID */ +struct wmi_create_pstream_cmd { + /* msec */ + __le32 min_service_int; + + /* msec */ + __le32 max_service_int; + + /* msec */ + __le32 inactivity_int; + + /* msec */ + __le32 suspension_int; + + __le32 service_start_time; + + /* in bps */ + __le32 min_data_rate; + + /* in bps */ + __le32 mean_data_rate; + + /* in bps */ + __le32 peak_data_rate; + + __le32 max_burst_size; + __le32 delay_bound; + + /* in bps */ + __le32 min_phy_rate; + + __le32 sba; + __le32 medium_time; + + /* in octects */ + __le16 nominal_msdu; + + /* in octects */ + __le16 max_msdu; + + u8 traffic_class; + + /* see, enum dir_type */ + u8 traffic_direc; + + u8 rx_queue_num; + + /* see, enum traffic_type */ + u8 traffic_type; + + /* see, enum voiceps_cap_type */ + u8 voice_psc_cap; + u8 tsid; + + /* 802.1D user priority */ + u8 user_pri; + + /* nominal phy rate */ + u8 nominal_phy; +} __packed; + +/* WMI_DELETE_PSTREAM_CMDID */ +struct wmi_delete_pstream_cmd { + u8 tx_queue_num; + u8 rx_queue_num; + u8 traffic_direc; + u8 traffic_class; + u8 tsid; +} __packed; + +/* WMI_SET_CHANNEL_PARAMS_CMDID */ +enum wmi_phy_mode { + WMI_11A_MODE = 0x1, + WMI_11G_MODE = 0x2, + WMI_11AG_MODE = 0x3, + WMI_11B_MODE = 0x4, + WMI_11GONLY_MODE = 0x5, +}; + +#define WMI_MAX_CHANNELS 32 + +/* + * WMI_RSSI_THRESHOLD_PARAMS_CMDID + * Setting the polltime to 0 would disable polling. Threshold values are + * in the ascending order, and should agree to: + * (lowThreshold_lowerVal < lowThreshold_upperVal < highThreshold_lowerVal + * < highThreshold_upperVal) + */ + +struct wmi_rssi_threshold_params_cmd { + /* polling time as a factor of LI */ + __le32 poll_time; + + /* lowest of upper */ + a_sle16 thresh_above1_val; + + a_sle16 thresh_above2_val; + a_sle16 thresh_above3_val; + a_sle16 thresh_above4_val; + a_sle16 thresh_above5_val; + + /* highest of upper */ + a_sle16 thresh_above6_val; + + /* lowest of bellow */ + a_sle16 thresh_below1_val; + + a_sle16 thresh_below2_val; + a_sle16 thresh_below3_val; + a_sle16 thresh_below4_val; + a_sle16 thresh_below5_val; + + /* highest of bellow */ + a_sle16 thresh_below6_val; + + /* "alpha" */ + u8 weight; + + u8 reserved[3]; +} __packed; + +/* + * WMI_SNR_THRESHOLD_PARAMS_CMDID + * Setting the polltime to 0 would disable polling. + */ + +struct wmi_snr_threshold_params_cmd { + /* polling time as a factor of LI */ + __le32 poll_time; + + /* "alpha" */ + u8 weight; + + /* lowest of uppper */ + u8 thresh_above1_val; + + u8 thresh_above2_val; + u8 thresh_above3_val; + + /* highest of upper */ + u8 thresh_above4_val; + + /* lowest of bellow */ + u8 thresh_below1_val; + + u8 thresh_below2_val; + u8 thresh_below3_val; + + /* highest of bellow */ + u8 thresh_below4_val; + + u8 reserved[3]; +} __packed; + +enum wmi_preamble_policy { + WMI_IGNORE_BARKER_IN_ERP = 0, + WMI_DONOT_IGNORE_BARKER_IN_ERP +}; + +struct wmi_set_lpreamble_cmd { + u8 status; + u8 preamble_policy; +} __packed; + +struct wmi_set_rts_cmd { + __le16 threshold; +} __packed; + +/* WMI_SET_TX_PWR_CMDID */ +struct wmi_set_tx_pwr_cmd { + /* in dbM units */ + u8 dbM; +} __packed; + +struct wmi_tx_pwr_reply { + /* in dbM units */ + u8 dbM; +} __packed; + +struct wmi_report_sleep_state_event { + __le32 sleep_state; +}; + +enum wmi_report_sleep_status { + WMI_REPORT_SLEEP_STATUS_IS_DEEP_SLEEP = 0, + WMI_REPORT_SLEEP_STATUS_IS_AWAKE +}; +enum target_event_report_config { + /* default */ + DISCONN_EVT_IN_RECONN = 0, + + NO_DISCONN_EVT_IN_RECONN +}; + +/* Command Replies */ + +/* WMI_GET_CHANNEL_LIST_CMDID reply */ +struct wmi_channel_list_reply { + u8 reserved; + + /* number of channels in reply */ + u8 num_ch; + + /* channel in Mhz */ + __le16 ch_list[1]; +} __packed; + +/* List of Events (target to host) */ +enum wmi_event_id { + WMI_READY_EVENTID = 0x1001, + WMI_CONNECT_EVENTID, + WMI_DISCONNECT_EVENTID, + WMI_BSSINFO_EVENTID, + WMI_CMDERROR_EVENTID, + WMI_REGDOMAIN_EVENTID, + WMI_PSTREAM_TIMEOUT_EVENTID, + WMI_NEIGHBOR_REPORT_EVENTID, + WMI_TKIP_MICERR_EVENTID, + WMI_SCAN_COMPLETE_EVENTID, /* 0x100a */ + WMI_REPORT_STATISTICS_EVENTID, + WMI_RSSI_THRESHOLD_EVENTID, + WMI_ERROR_REPORT_EVENTID, + WMI_OPT_RX_FRAME_EVENTID, + WMI_REPORT_ROAM_TBL_EVENTID, + WMI_EXTENSION_EVENTID, + WMI_CAC_EVENTID, + WMI_SNR_THRESHOLD_EVENTID, + WMI_LQ_THRESHOLD_EVENTID, + WMI_TX_RETRY_ERR_EVENTID, /* 0x1014 */ + WMI_REPORT_ROAM_DATA_EVENTID, + WMI_TEST_EVENTID, + WMI_APLIST_EVENTID, + WMI_GET_WOW_LIST_EVENTID, + WMI_GET_PMKID_LIST_EVENTID, + WMI_CHANNEL_CHANGE_EVENTID, + WMI_PEER_NODE_EVENTID, + WMI_PSPOLL_EVENTID, + WMI_DTIMEXPIRY_EVENTID, + WMI_WLAN_VERSION_EVENTID, + WMI_SET_PARAMS_REPLY_EVENTID, + WMI_ADDBA_REQ_EVENTID, /*0x1020 */ + WMI_ADDBA_RESP_EVENTID, + WMI_DELBA_REQ_EVENTID, + WMI_TX_COMPLETE_EVENTID, + WMI_HCI_EVENT_EVENTID, + WMI_ACL_DATA_EVENTID, + WMI_REPORT_SLEEP_STATE_EVENTID, + WMI_REPORT_BTCOEX_STATS_EVENTID, + WMI_REPORT_BTCOEX_CONFIG_EVENTID, + WMI_GET_PMK_EVENTID, + + /* DFS Events */ + WMI_DFS_HOST_ATTACH_EVENTID, + WMI_DFS_HOST_INIT_EVENTID, + WMI_DFS_RESET_DELAYLINES_EVENTID, + WMI_DFS_RESET_RADARQ_EVENTID, + WMI_DFS_RESET_AR_EVENTID, + WMI_DFS_RESET_ARQ_EVENTID, + WMI_DFS_SET_DUR_MULTIPLIER_EVENTID, + WMI_DFS_SET_BANGRADAR_EVENTID, + WMI_DFS_SET_DEBUGLEVEL_EVENTID, + WMI_DFS_PHYERR_EVENTID, + + /* CCX Evants */ + WMI_CCX_RM_STATUS_EVENTID, + + /* P2P Events */ + WMI_P2P_GO_NEG_RESULT_EVENTID, + + WMI_WAC_SCAN_DONE_EVENTID, + WMI_WAC_REPORT_BSS_EVENTID, + WMI_WAC_START_WPS_EVENTID, + WMI_WAC_CTRL_REQ_REPLY_EVENTID, + + /* RFKILL Events */ + WMI_RFKILL_STATE_CHANGE_EVENTID, + WMI_RFKILL_GET_MODE_CMD_EVENTID, + WMI_THIN_RESERVED_START_EVENTID = 0x8000, + + /* + * Events in this range are reserved for thinmode + * See wmi_thin.h for actual definitions + */ + WMI_THIN_RESERVED_END_EVENTID = 0x8fff, + + WMI_SET_CHANNEL_EVENTID, + WMI_ASSOC_REQ_EVENTID, + + /* Generic ACS event */ + WMI_ACS_EVENTID, + WMI_REPORT_WMM_PARAMS_EVENTID +}; + +struct wmi_ready_event_2 { + __le32 sw_version; + __le32 abi_version; + u8 mac_addr[ETH_ALEN]; + u8 phy_cap; +} __packed; + +/* Connect Event */ +struct wmi_connect_event { + __le16 ch; + u8 bssid[ETH_ALEN]; + __le16 listen_intvl; + __le16 beacon_intvl; + __le32 nw_type; + u8 beacon_ie_len; + u8 assoc_req_len; + u8 assoc_resp_len; + u8 assoc_info[1]; +} __packed; + +/* Disconnect Event */ +enum wmi_disconnect_reason { + NO_NETWORK_AVAIL = 0x01, + + /* bmiss */ + LOST_LINK = 0x02, + + DISCONNECT_CMD = 0x03, + BSS_DISCONNECTED = 0x04, + AUTH_FAILED = 0x05, + ASSOC_FAILED = 0x06, + NO_RESOURCES_AVAIL = 0x07, + CSERV_DISCONNECT = 0x08, + INVALID_PROFILE = 0x0a, + DOT11H_CHANNEL_SWITCH = 0x0b, + PROFILE_MISMATCH = 0x0c, + CONNECTION_EVICTED = 0x0d, + IBSS_MERGE = 0xe, +}; + +struct wmi_disconnect_event { + /* reason code, see 802.11 spec. */ + __le16 proto_reason_status; + + /* set if known */ + u8 bssid[ETH_ALEN]; + + /* see WMI_DISCONNECT_REASON */ + u8 disconn_reason; + + u8 assoc_resp_len; + u8 assoc_info[1]; +} __packed; + +/* + * BSS Info Event. + * Mechanism used to inform host of the presence and characteristic of + * wireless networks present. Consists of bss info header followed by + * the beacon or probe-response frame body. The 802.11 header is no included. + */ +enum wmi_bi_ftype { + BEACON_FTYPE = 0x1, + PROBERESP_FTYPE, + ACTION_MGMT_FTYPE, + PROBEREQ_FTYPE, +}; + +struct wmi_bss_info_hdr { + __le16 ch; + + /* see, enum wmi_bi_ftype */ + u8 frame_type; + + u8 snr; + a_sle16 rssi; + u8 bssid[ETH_ALEN]; + __le32 ie_mask; +} __packed; + +/* + * BSS INFO HDR version 2.0 + * With 6 bytes HTC header and 6 bytes of WMI header + * WMI_BSS_INFO_HDR cannot be accommodated in the removed 802.11 management + * header space. + * - Reduce the ie_mask to 2 bytes as only two bit flags are used + * - Remove rssi and compute it on the host. rssi = snr - 95 + */ +struct wmi_bss_info_hdr2 { + __le16 ch; + + /* see, enum wmi_bi_ftype */ + u8 frame_type; + + u8 snr; + u8 bssid[ETH_ALEN]; + __le16 ie_mask; +} __packed; + +/* Command Error Event */ +enum wmi_error_code { + INVALID_PARAM = 0x01, + ILLEGAL_STATE = 0x02, + INTERNAL_ERROR = 0x03, +}; + +struct wmi_cmd_error_event { + __le16 cmd_id; + u8 err_code; +} __packed; + +struct wmi_pstream_timeout_event { + u8 tx_queue_num; + u8 rx_queue_num; + u8 traffic_direc; + u8 traffic_class; +} __packed; + +/* + * The WMI_NEIGHBOR_REPORT Event is generated by the target to inform + * the host of BSS's it has found that matches the current profile. + * It can be used by the host to cache PMKs and/to initiate pre-authentication + * if the BSS supports it. The first bssid is always the current associated + * BSS. + * The bssid and bssFlags information repeats according to the number + * or APs reported. + */ +enum wmi_bss_flags { + WMI_DEFAULT_BSS_FLAGS = 0x00, + WMI_PREAUTH_CAPABLE_BSS = 0x01, + WMI_PMKID_VALID_BSS = 0x02, +}; + +/* TKIP MIC Error Event */ +struct wmi_tkip_micerr_event { + u8 key_id; + u8 is_mcast; +} __packed; + +/* WMI_SCAN_COMPLETE_EVENTID */ +struct wmi_scan_complete_event { + a_sle32 status; +} __packed; + +#define MAX_OPT_DATA_LEN 1400 + +/* + * Special frame receive Event. + * Mechanism used to inform host of the receiption of the special frames. + * Consists of special frame info header followed by special frame body. + * The 802.11 header is not included. + */ +struct wmi_opt_rx_info_hdr { + __le16 ch; + u8 frame_type; + s8 snr; + u8 src_addr[ETH_ALEN]; + u8 bssid[ETH_ALEN]; +} __packed; + +/* Reporting statistic */ +struct tx_stats { + __le32 pkt; + __le32 byte; + __le32 ucast_pkt; + __le32 ucast_byte; + __le32 mcast_pkt; + __le32 mcast_byte; + __le32 bcast_pkt; + __le32 bcast_byte; + __le32 rts_success_cnt; + __le32 pkt_per_ac[4]; + __le32 err_per_ac[4]; + + __le32 err; + __le32 fail_cnt; + __le32 retry_cnt; + __le32 mult_retry_cnt; + __le32 rts_fail_cnt; + a_sle32 ucast_rate; +} __packed; + +struct rx_stats { + __le32 pkt; + __le32 byte; + __le32 ucast_pkt; + __le32 ucast_byte; + __le32 mcast_pkt; + __le32 mcast_byte; + __le32 bcast_pkt; + __le32 bcast_byte; + __le32 frgment_pkt; + + __le32 err; + __le32 crc_err; + __le32 key_cache_miss; + __le32 decrypt_err; + __le32 dupl_frame; + a_sle32 ucast_rate; +} __packed; + +struct tkip_ccmp_stats { + __le32 tkip_local_mic_fail; + __le32 tkip_cnter_measures_invoked; + __le32 tkip_replays; + __le32 tkip_fmt_err; + __le32 ccmp_fmt_err; + __le32 ccmp_replays; +} __packed; + +struct pm_stats { + __le32 pwr_save_failure_cnt; + __le16 stop_tx_failure_cnt; + __le16 atim_tx_failure_cnt; + __le16 atim_rx_failure_cnt; + __le16 bcn_rx_failure_cnt; +} __packed; + +struct cserv_stats { + __le32 cs_bmiss_cnt; + __le32 cs_low_rssi_cnt; + __le16 cs_connect_cnt; + __le16 cs_discon_cnt; + a_sle16 cs_ave_beacon_rssi; + __le16 cs_roam_count; + a_sle16 cs_rssi; + u8 cs_snr; + u8 cs_ave_beacon_snr; + u8 cs_last_roam_msec; +} __packed; + +struct wlan_net_stats { + struct tx_stats tx; + struct rx_stats rx; + struct tkip_ccmp_stats tkip_ccmp_stats; +} __packed; + +struct arp_stats { + __le32 arp_received; + __le32 arp_matched; + __le32 arp_replied; +} __packed; + +struct wlan_wow_stats { + __le32 wow_pkt_dropped; + __le16 wow_evt_discarded; + u8 wow_host_pkt_wakeups; + u8 wow_host_evt_wakeups; +} __packed; + +struct wmi_target_stats { + __le32 lq_val; + a_sle32 noise_floor_calib; + struct pm_stats pm_stats; + struct wlan_net_stats stats; + struct wlan_wow_stats wow_stats; + struct arp_stats arp_stats; + struct cserv_stats cserv_stats; +} __packed; + +/* + * WMI_RSSI_THRESHOLD_EVENTID. + * Indicate the RSSI events to host. Events are indicated when we breach a + * thresold value. + */ +enum wmi_rssi_threshold_val { + WMI_RSSI_THRESHOLD1_ABOVE = 0, + WMI_RSSI_THRESHOLD2_ABOVE, + WMI_RSSI_THRESHOLD3_ABOVE, + WMI_RSSI_THRESHOLD4_ABOVE, + WMI_RSSI_THRESHOLD5_ABOVE, + WMI_RSSI_THRESHOLD6_ABOVE, + WMI_RSSI_THRESHOLD1_BELOW, + WMI_RSSI_THRESHOLD2_BELOW, + WMI_RSSI_THRESHOLD3_BELOW, + WMI_RSSI_THRESHOLD4_BELOW, + WMI_RSSI_THRESHOLD5_BELOW, + WMI_RSSI_THRESHOLD6_BELOW +}; + +struct wmi_rssi_threshold_event { + a_sle16 rssi; + u8 range; +} __packed; + +enum wmi_snr_threshold_val { + WMI_SNR_THRESHOLD1_ABOVE = 1, + WMI_SNR_THRESHOLD1_BELOW, + WMI_SNR_THRESHOLD2_ABOVE, + WMI_SNR_THRESHOLD2_BELOW, + WMI_SNR_THRESHOLD3_ABOVE, + WMI_SNR_THRESHOLD3_BELOW, + WMI_SNR_THRESHOLD4_ABOVE, + WMI_SNR_THRESHOLD4_BELOW +}; + +struct wmi_snr_threshold_event { + /* see, enum wmi_snr_threshold_val */ + u8 range; + + u8 snr; +} __packed; + +/* WMI_REPORT_ROAM_TBL_EVENTID */ +#define MAX_ROAM_TBL_CAND 5 + +struct wmi_bss_roam_info { + a_sle32 roam_util; + u8 bssid[ETH_ALEN]; + s8 rssi; + s8 rssidt; + s8 last_rssi; + s8 util; + s8 bias; + + /* for alignment */ + u8 reserved; +} __packed; + +/* WMI_CAC_EVENTID */ +enum cac_indication { + CAC_INDICATION_ADMISSION = 0x00, + CAC_INDICATION_ADMISSION_RESP = 0x01, + CAC_INDICATION_DELETE = 0x02, + CAC_INDICATION_NO_RESP = 0x03, +}; + +#define WMM_TSPEC_IE_LEN 63 + +struct wmi_cac_event { + u8 ac; + u8 cac_indication; + u8 status_code; + u8 tspec_suggestion[WMM_TSPEC_IE_LEN]; +} __packed; + +/* WMI_APLIST_EVENTID */ + +enum aplist_ver { + APLIST_VER1 = 1, +}; + +struct wmi_ap_info_v1 { + u8 bssid[ETH_ALEN]; + __le16 channel; +} __packed; + +union wmi_ap_info { + struct wmi_ap_info_v1 ap_info_v1; +} __packed; + +struct wmi_aplist_event { + u8 ap_list_ver; + u8 num_ap; + union wmi_ap_info ap_list[1]; +} __packed; + +/* Developer Commands */ + +/* + * WMI_SET_BITRATE_CMDID + * + * Get bit rate cmd uses same definition as set bit rate cmd + */ +enum wmi_bit_rate { + RATE_AUTO = -1, + RATE_1Mb = 0, + RATE_2Mb = 1, + RATE_5_5Mb = 2, + RATE_11Mb = 3, + RATE_6Mb = 4, + RATE_9Mb = 5, + RATE_12Mb = 6, + RATE_18Mb = 7, + RATE_24Mb = 8, + RATE_36Mb = 9, + RATE_48Mb = 10, + RATE_54Mb = 11, + RATE_MCS_0_20 = 12, + RATE_MCS_1_20 = 13, + RATE_MCS_2_20 = 14, + RATE_MCS_3_20 = 15, + RATE_MCS_4_20 = 16, + RATE_MCS_5_20 = 17, + RATE_MCS_6_20 = 18, + RATE_MCS_7_20 = 19, + RATE_MCS_0_40 = 20, + RATE_MCS_1_40 = 21, + RATE_MCS_2_40 = 22, + RATE_MCS_3_40 = 23, + RATE_MCS_4_40 = 24, + RATE_MCS_5_40 = 25, + RATE_MCS_6_40 = 26, + RATE_MCS_7_40 = 27, +}; + +struct wmi_bit_rate_reply { + /* see, enum wmi_bit_rate */ + s8 rate_index; +} __packed; + +/* + * WMI_SET_FIXRATES_CMDID + * + * Get fix rates cmd uses same definition as set fix rates cmd + */ +struct wmi_fix_rates_reply { + /* see wmi_bit_rate */ + __le32 fix_rate_mask; +} __packed; + +enum roam_data_type { + /* get the roam time data */ + ROAM_DATA_TIME = 1, +}; + +struct wmi_target_roam_time { + __le32 disassoc_time; + __le32 no_txrx_time; + __le32 assoc_time; + __le32 allow_txrx_time; + u8 disassoc_bssid[ETH_ALEN]; + s8 disassoc_bss_rssi; + u8 assoc_bssid[ETH_ALEN]; + s8 assoc_bss_rssi; +} __packed; + +enum wmi_txop_cfg { + WMI_TXOP_DISABLED = 0, + WMI_TXOP_ENABLED +}; + +struct wmi_set_wmm_txop_cmd { + u8 txop_enable; +} __packed; + +struct wmi_set_keepalive_cmd { + u8 keep_alive_intvl; +} __packed; + +struct wmi_get_keepalive_cmd { + __le32 configured; + u8 keep_alive_intvl; +} __packed; + +/* Notify the WSC registration status to the target */ +#define WSC_REG_ACTIVE 1 +#define WSC_REG_INACTIVE 0 + +#define WOW_MAX_FILTER_LISTS 1 +#define WOW_MAX_FILTERS_PER_LIST 4 +#define WOW_PATTERN_SIZE 64 +#define WOW_MASK_SIZE 64 + +#define MAC_MAX_FILTERS_PER_LIST 4 + +struct wow_filter { + u8 wow_valid_filter; + u8 wow_filter_id; + u8 wow_filter_size; + u8 wow_filter_offset; + u8 wow_filter_mask[WOW_MASK_SIZE]; + u8 wow_filter_pattern[WOW_PATTERN_SIZE]; +} __packed; + +#define MAX_IP_ADDRS 2 + +struct wmi_set_ip_cmd { + /* IP in network byte order */ + __le32 ips[MAX_IP_ADDRS]; +} __packed; + +/* WMI_GET_WOW_LIST_CMD reply */ +struct wmi_get_wow_list_reply { + /* number of patterns in reply */ + u8 num_filters; + + /* this is filter # x of total num_filters */ + u8 this_filter_num; + + u8 wow_mode; + u8 host_mode; + struct wow_filter wow_filters[1]; +} __packed; + +/* WMI_SET_AKMP_PARAMS_CMD */ + +struct wmi_pmkid { + u8 pmkid[WMI_PMKID_LEN]; +} __packed; + +/* WMI_GET_PMKID_LIST_CMD Reply */ +struct wmi_pmkid_list_reply { + __le32 num_pmkid; + u8 bssid_list[ETH_ALEN][1]; + struct wmi_pmkid pmkid_list[1]; +} __packed; + +/* WMI_ADDBA_REQ_EVENTID */ +struct wmi_addba_req_event { + u8 tid; + u8 win_sz; + __le16 st_seq_no; + + /* f/w response for ADDBA Req; OK (0) or failure (!=0) */ + u8 status; +} __packed; + +/* WMI_ADDBA_RESP_EVENTID */ +struct wmi_addba_resp_event { + u8 tid; + + /* OK (0), failure (!=0) */ + u8 status; + + /* three values: not supported(0), 3839, 8k */ + __le16 amsdu_sz; +} __packed; + +/* WMI_DELBA_EVENTID + * f/w received a DELBA for peer and processed it. + * Host is notified of this + */ +struct wmi_delba_event { + u8 tid; + u8 is_peer_initiator; + __le16 reason_code; +} __packed; + +#define PEER_NODE_JOIN_EVENT 0x00 +#define PEER_NODE_LEAVE_EVENT 0x01 +#define PEER_FIRST_NODE_JOIN_EVENT 0x10 +#define PEER_LAST_NODE_LEAVE_EVENT 0x11 + +struct wmi_peer_node_event { + u8 event_code; + u8 peer_mac_addr[ETH_ALEN]; +} __packed; + +/* Transmit complete event data structure(s) */ + +/* version 1 of tx complete msg */ +struct tx_complete_msg_v1 { +#define TX_COMPLETE_STATUS_SUCCESS 0 +#define TX_COMPLETE_STATUS_RETRIES 1 +#define TX_COMPLETE_STATUS_NOLINK 2 +#define TX_COMPLETE_STATUS_TIMEOUT 3 +#define TX_COMPLETE_STATUS_OTHER 4 + + u8 status; + + /* packet ID to identify parent packet */ + u8 pkt_id; + + /* rate index on successful transmission */ + u8 rate_idx; + + /* number of ACK failures in tx attempt */ + u8 ack_failures; +} __packed; + +struct wmi_tx_complete_event { + /* no of tx comp msgs following this struct */ + u8 num_msg; + + /* length in bytes for each individual msg following this struct */ + u8 msg_len; + + /* version of tx complete msg data following this struct */ + u8 msg_type; + + /* individual messages follow this header */ + u8 reserved; +} __packed; + +/* + * ------- AP Mode definitions -------------- + */ + +/* + * !!! Warning !!! + * -Changing the following values needs compilation of both driver and firmware + */ +#define AP_MAX_NUM_STA 8 + +/* Spl. AID used to set DTIM flag in the beacons */ +#define MCAST_AID 0xFF + +#define DEF_AP_COUNTRY_CODE "US " + +/* Used with WMI_AP_SET_NUM_STA_CMDID */ + +struct wmi_ap_set_pvb_cmd { + __le32 flag; + __le16 aid; +} __packed; + +struct wmi_rx_frame_format_cmd { + /* version of meta data for rx packets <0 = default> (0-7 = valid) */ + u8 meta_ver; + + /* + * 1 == leave .11 header intact, + * 0 == replace .11 header with .3 <default> + */ + u8 dot11_hdr; + + /* + * 1 == defragmentation is performed by host, + * 0 == performed by target <default> + */ + u8 defrag_on_host; + + /* for alignment */ + u8 reserved[1]; +} __packed; + +/* AP mode events */ + +/* WMI_PS_POLL_EVENT */ +struct wmi_pspoll_event { + __le16 aid; +} __packed; + +struct wmi_per_sta_stat { + __le32 tx_bytes; + __le32 tx_pkts; + __le32 tx_error; + __le32 tx_discard; + __le32 rx_bytes; + __le32 rx_pkts; + __le32 rx_error; + __le32 rx_discard; + __le32 aid; +} __packed; + +struct wmi_ap_mode_stat { + __le32 action; + struct wmi_per_sta_stat sta[AP_MAX_NUM_STA + 1]; +} __packed; + +/* End of AP mode definitions */ + +/* Extended WMI (WMIX) + * + * Extended WMIX commands are encapsulated in a WMI message with + * cmd=WMI_EXTENSION_CMD. + * + * Extended WMI commands are those that are needed during wireless + * operation, but which are not really wireless commands. This allows, + * for instance, platform-specific commands. Extended WMI commands are + * embedded in a WMI command message with WMI_COMMAND_ID=WMI_EXTENSION_CMDID. + * Extended WMI events are similarly embedded in a WMI event message with + * WMI_EVENT_ID=WMI_EXTENSION_EVENTID. + */ +struct wmix_cmd_hdr { + __le32 cmd_id; +} __packed; + +enum wmix_command_id { + WMIX_DSETOPEN_REPLY_CMDID = 0x2001, + WMIX_DSETDATA_REPLY_CMDID, + WMIX_GPIO_OUTPUT_SET_CMDID, + WMIX_GPIO_INPUT_GET_CMDID, + WMIX_GPIO_REGISTER_SET_CMDID, + WMIX_GPIO_REGISTER_GET_CMDID, + WMIX_GPIO_INTR_ACK_CMDID, + WMIX_HB_CHALLENGE_RESP_CMDID, + WMIX_DBGLOG_CFG_MODULE_CMDID, + WMIX_PROF_CFG_CMDID, /* 0x200a */ + WMIX_PROF_ADDR_SET_CMDID, + WMIX_PROF_START_CMDID, + WMIX_PROF_STOP_CMDID, + WMIX_PROF_COUNT_GET_CMDID, +}; + +enum wmix_event_id { + WMIX_DSETOPENREQ_EVENTID = 0x3001, + WMIX_DSETCLOSE_EVENTID, + WMIX_DSETDATAREQ_EVENTID, + WMIX_GPIO_INTR_EVENTID, + WMIX_GPIO_DATA_EVENTID, + WMIX_GPIO_ACK_EVENTID, + WMIX_HB_CHALLENGE_RESP_EVENTID, + WMIX_DBGLOG_EVENTID, + WMIX_PROF_COUNT_EVENTID, +}; + +/* + * ------Error Detection support------- + */ + +/* + * WMIX_HB_CHALLENGE_RESP_CMDID + * Heartbeat Challenge Response command + */ +struct wmix_hb_challenge_resp_cmd { + __le32 cookie; + __le32 source; +} __packed; + +/* End of Extended WMI (WMIX) */ + +enum wmi_sync_flag { + NO_SYNC_WMIFLAG = 0, + + /* transmit all queued data before cmd */ + SYNC_BEFORE_WMIFLAG, + + /* any new data waits until cmd execs */ + SYNC_AFTER_WMIFLAG, + + SYNC_BOTH_WMIFLAG, + + /* end marker */ + END_WMIFLAG +}; + +enum htc_endpoint_id ath6kl_wmi_get_control_ep(struct wmi *wmi); +void ath6kl_wmi_set_control_ep(struct wmi *wmi, enum htc_endpoint_id ep_id); +int ath6kl_wmi_dix_2_dot3(struct wmi *wmi, struct sk_buff *skb); +int ath6kl_wmi_data_hdr_add(struct wmi *wmi, struct sk_buff *skb, + u8 msg_type, bool more_data, + enum wmi_data_hdr_data_type data_type, + u8 meta_ver, void *tx_meta_info); + +int ath6kl_wmi_dot11_hdr_remove(struct wmi *wmi, struct sk_buff *skb); +int ath6kl_wmi_dot3_2_dix(struct sk_buff *skb); +int ath6kl_wmi_data_hdr_remove(struct wmi *wmi, struct sk_buff *skb); +int ath6kl_wmi_implicit_create_pstream(struct wmi *wmi, struct sk_buff *skb, + u32 layer2_priority, bool wmm_enabled, + u8 *ac); + +int ath6kl_wmi_control_rx(struct wmi *wmi, struct sk_buff *skb); +void ath6kl_wmi_iterate_nodes(struct wmi *wmi, + void (*f) (void *arg, struct bss *), + void *arg); +struct bss *ath6kl_wmi_find_node(struct wmi *wmi, const u8 *mac_addr); +void ath6kl_wmi_node_free(struct wmi *wmi, const u8 *mac_addr); + +int ath6kl_wmi_cmd_send(struct wmi *wmi, struct sk_buff *skb, + enum wmi_cmd_id cmd_id, enum wmi_sync_flag sync_flag); + +int ath6kl_wmi_connect_cmd(struct wmi *wmi, enum network_type nw_type, + enum dot11_auth_mode dot11_auth_mode, + enum auth_mode auth_mode, + enum crypto_type pairwise_crypto, + u8 pairwise_crypto_len, + enum crypto_type group_crypto, + u8 group_crypto_len, int ssid_len, u8 *ssid, + u8 *bssid, u16 channel, u32 ctrl_flags); + +int ath6kl_wmi_reconnect_cmd(struct wmi *wmi, u8 *bssid, u16 channel); +int ath6kl_wmi_disconnect_cmd(struct wmi *wmi); +int ath6kl_wmi_startscan_cmd(struct wmi *wmi, enum wmi_scan_type scan_type, + u32 force_fgscan, u32 is_legacy, + u32 home_dwell_time, u32 force_scan_interval, + s8 num_chan, u16 *ch_list); +int ath6kl_wmi_scanparams_cmd(struct wmi *wmi, u16 fg_start_sec, + u16 fg_end_sec, u16 bg_sec, + u16 minact_chdw_msec, u16 maxact_chdw_msec, + u16 pas_chdw_msec, u8 short_scan_ratio, + u8 scan_ctrl_flag, u32 max_dfsch_act_time, + u16 maxact_scan_per_ssid); +int ath6kl_wmi_bssfilter_cmd(struct wmi *wmi, u8 filter, u32 ie_mask); +int ath6kl_wmi_probedssid_cmd(struct wmi *wmi, u8 index, u8 flag, + u8 ssid_len, u8 *ssid); +int ath6kl_wmi_listeninterval_cmd(struct wmi *wmi, u16 listen_interval, + u16 listen_beacons); +int ath6kl_wmi_powermode_cmd(struct wmi *wmi, u8 pwr_mode); +int ath6kl_wmi_pmparams_cmd(struct wmi *wmi, u16 idle_period, + u16 ps_poll_num, u16 dtim_policy, + u16 tx_wakup_policy, u16 num_tx_to_wakeup, + u16 ps_fail_event_policy); +int ath6kl_wmi_disctimeout_cmd(struct wmi *wmi, u8 timeout); +int ath6kl_wmi_create_pstream_cmd(struct wmi *wmi, + struct wmi_create_pstream_cmd *pstream); +int ath6kl_wmi_delete_pstream_cmd(struct wmi *wmi, u8 traffic_class, u8 tsid); + +int ath6kl_wmi_set_rts_cmd(struct wmi *wmi, u16 threshold); +int ath6kl_wmi_set_lpreamble_cmd(struct wmi *wmi, u8 status, + u8 preamble_policy); + +int ath6kl_wmi_get_challenge_resp_cmd(struct wmi *wmi, u32 cookie, u32 source); + +int ath6kl_wmi_get_stats_cmd(struct wmi *wmi); +int ath6kl_wmi_addkey_cmd(struct wmi *wmi, u8 key_index, + enum crypto_type key_type, + u8 key_usage, u8 key_len, + u8 *key_rsc, u8 *key_material, + u8 key_op_ctrl, u8 *mac_addr, + enum wmi_sync_flag sync_flag); +int ath6kl_wmi_add_krk_cmd(struct wmi *wmi, u8 *krk); +int ath6kl_wmi_deletekey_cmd(struct wmi *wmi, u8 key_index); +int ath6kl_wmi_setpmkid_cmd(struct wmi *wmi, const u8 *bssid, + const u8 *pmkid, bool set); +int ath6kl_wmi_set_tx_pwr_cmd(struct wmi *wmi, u8 dbM); +int ath6kl_wmi_get_tx_pwr_cmd(struct wmi *wmi); +void ath6kl_wmi_get_current_bssid(struct wmi *wmi, u8 *bssid); + +int ath6kl_wmi_set_wmm_txop(struct wmi *wmi, enum wmi_txop_cfg cfg); +int ath6kl_wmi_set_keepalive_cmd(struct wmi *wmi, u8 keep_alive_intvl); + +s32 ath6kl_wmi_get_rate(s8 rate_index); + +int ath6kl_wmi_set_ip_cmd(struct wmi *wmi, struct wmi_set_ip_cmd *ip_cmd); + +struct bss *ath6kl_wmi_find_ssid_node(struct wmi *wmi, u8 *ssid, + u32 ssid_len, bool is_wpa2, + bool match_ssid); + +void ath6kl_wmi_node_return(struct wmi *wmi, struct bss *bss); + +/* AP mode */ +int ath6kl_wmi_set_pvb_cmd(struct wmi *wmi, u16 aid, bool flag); + +int ath6kl_wmi_set_rx_frame_format_cmd(struct wmi *wmi, u8 rx_meta_version, + bool rx_dot11_hdr, bool defrag_on_host); + +void *ath6kl_wmi_init(void *devt); +void ath6kl_wmi_shutdown(struct wmi *wmi); + +#endif /* WMI_H */ |
