diff options
30 files changed, 14046 insertions, 61 deletions
diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig index 7aeb113cbb90..b4338f389394 100644 --- a/drivers/net/wireless/Kconfig +++ b/drivers/net/wireless/Kconfig @@ -274,7 +274,6 @@ source "drivers/net/wireless/b43legacy/Kconfig" source "drivers/net/wireless/hostap/Kconfig" source "drivers/net/wireless/ipw2x00/Kconfig" source "drivers/net/wireless/iwlwifi/Kconfig" -source "drivers/net/wireless/iwlegacy/Kconfig" source "drivers/net/wireless/iwmc3200wifi/Kconfig" source "drivers/net/wireless/libertas/Kconfig" source "drivers/net/wireless/orinoco/Kconfig" diff --git a/drivers/net/wireless/Makefile b/drivers/net/wireless/Makefile index cd0c7e2aed43..9760561a27a5 100644 --- a/drivers/net/wireless/Makefile +++ b/drivers/net/wireless/Makefile @@ -41,8 +41,7 @@ obj-$(CONFIG_ADM8211) += adm8211.o obj-$(CONFIG_MWL8K) += mwl8k.o -obj-$(CONFIG_IWLAGN) += iwlwifi/ -obj-$(CONFIG_IWLWIFI_LEGACY) += iwlegacy/ +obj-$(CONFIG_IWLWIFI) += iwlwifi/ obj-$(CONFIG_RT2X00) += rt2x00/ obj-$(CONFIG_P54_COMMON) += p54/ diff --git a/drivers/net/wireless/iwlwifi/Kconfig b/drivers/net/wireless/iwlwifi/Kconfig index 17d555f2215a..e1e3b1cf3cff 100644 --- a/drivers/net/wireless/iwlwifi/Kconfig +++ b/drivers/net/wireless/iwlwifi/Kconfig @@ -1,52 +1,18 @@ -config IWLAGN - tristate "Intel Wireless WiFi Next Gen AGN - Wireless-N/Advanced-N/Ultimate-N (iwlagn) " +config IWLWIFI + tristate "Intel Wireless Wifi" depends on PCI && MAC80211 select FW_LOADER select NEW_LEDS select LEDS_CLASS select LEDS_TRIGGERS select MAC80211_LEDS - ---help--- - Select to build the driver supporting the: - - Intel Wireless WiFi Link Next-Gen AGN - - This option enables support for use with the following hardware: - Intel Wireless WiFi Link 6250AGN Adapter - Intel 6000 Series Wi-Fi Adapters (6200AGN and 6300AGN) - Intel WiFi Link 1000BGN - Intel Wireless WiFi 5150AGN - Intel Wireless WiFi 5100AGN, 5300AGN, and 5350AGN - Intel 6005 Series Wi-Fi Adapters - Intel 6030 Series Wi-Fi Adapters - Intel Wireless WiFi Link 6150BGN 2 Adapter - Intel 100 Series Wi-Fi Adapters (100BGN and 130BGN) - Intel 2000 Series Wi-Fi Adapters - - - This driver uses the kernel's mac80211 subsystem. - - In order to use this driver, you will need a microcode (uCode) - image for it. You can obtain the microcode from: - - <http://intellinuxwireless.org/>. - - The microcode is typically installed in /lib/firmware. You can - look in the hotplug script /etc/hotplug/firmware.agent to - determine which directory FIRMWARE_DIR is set to when the script - runs. - - If you want to compile the driver as a module ( = code which can be - inserted in and removed from the running kernel whenever you want), - say M here and read <file:Documentation/kbuild/modules.txt>. The - module will be called iwlagn. menu "Debugging Options" - depends on IWLAGN + depends on IWLWIFI config IWLWIFI_DEBUG - bool "Enable full debugging output in the iwlagn driver" - depends on IWLAGN + bool "Enable full debugging output in iwlagn and iwl3945 drivers" + depends on IWLWIFI ---help--- This option will enable debug tracing output for the iwlwifi drivers @@ -71,7 +37,7 @@ config IWLWIFI_DEBUG config IWLWIFI_DEBUGFS bool "iwlagn debugfs support" - depends on IWLAGN && MAC80211_DEBUGFS + depends on IWLWIFI && MAC80211_DEBUGFS ---help--- Enable creation of debugfs files for the iwlwifi drivers. This is a low-impact option that allows getting insight into the @@ -79,13 +45,13 @@ config IWLWIFI_DEBUGFS config IWLWIFI_DEBUG_EXPERIMENTAL_UCODE bool "Experimental uCode support" - depends on IWLAGN && IWLWIFI_DEBUG + depends on IWLWIFI && IWLWIFI_DEBUG ---help--- Enable use of experimental ucode for testing and debugging. config IWLWIFI_DEVICE_TRACING bool "iwlwifi device access tracing" - depends on IWLAGN + depends on IWLWIFI depends on EVENT_TRACING help Say Y here to trace all commands, including TX frames and IO @@ -102,9 +68,57 @@ config IWLWIFI_DEVICE_TRACING occur. endmenu +config IWLAGN + tristate "Intel Wireless WiFi Next Gen AGN (iwlagn)" + depends on IWLWIFI + ---help--- + Select to build the driver supporting the: + + Intel Wireless WiFi Link Next-Gen AGN + + This driver uses the kernel's mac80211 subsystem. + + In order to use this driver, you will need a microcode (uCode) + image for it. You can obtain the microcode from: + + <http://intellinuxwireless.org/>. + + The microcode is typically installed in /lib/firmware. You can + look in the hotplug script /etc/hotplug/firmware.agent to + determine which directory FIRMWARE_DIR is set to when the script + runs. + + If you want to compile the driver as a module ( = code which can be + inserted in and removed from the running kernel whenever you want), + say M here and read <file:Documentation/kbuild/modules.txt>. The + module will be called iwlagn. + + +config IWL4965 + bool "Intel Wireless WiFi 4965AGN" + depends on IWLAGN + ---help--- + This option enables support for Intel Wireless WiFi Link 4965AGN + +config IWL5000 + bool "Intel Wireless-N/Advanced-N/Ultimate-N WiFi Link" + depends on IWLAGN + ---help--- + This option enables support for use with the following hardware: + Intel Wireless WiFi Link 6250AGN Adapter + Intel 6000 Series Wi-Fi Adapters (6200AGN and 6300AGN) + Intel WiFi Link 1000BGN + Intel Wireless WiFi 5150AGN + Intel Wireless WiFi 5100AGN, 5300AGN, and 5350AGN + Intel 6005 Series Wi-Fi Adapters + Intel 6030 Series Wi-Fi Adapters + Intel Wireless WiFi Link 6150BGN 2 Adapter + Intel 100 Series Wi-Fi Adapters (100BGN and 130BGN) + Intel 2000 Series Wi-Fi Adapters + config IWL_P2P bool "iwlwifi experimental P2P support" - depends on IWLAGN + depends on IWL5000 help This option enables experimental P2P support for some devices based on microcode support. Since P2P support is still under @@ -118,3 +132,27 @@ config IWL_P2P Say Y only if you want to experiment with P2P. +config IWL3945 + tristate "Intel PRO/Wireless 3945ABG/BG Network Connection (iwl3945)" + depends on IWLWIFI + ---help--- + Select to build the driver supporting the: + + Intel PRO/Wireless 3945ABG/BG Network Connection + + This driver uses the kernel's mac80211 subsystem. + + In order to use this driver, you will need a microcode (uCode) + image for it. You can obtain the microcode from: + + <http://intellinuxwireless.org/>. + + The microcode is typically installed in /lib/firmware. You can + look in the hotplug script /etc/hotplug/firmware.agent to + determine which directory FIRMWARE_DIR is set to when the script + runs. + + If you want to compile the driver as a module ( = code which can be + inserted in and removed from the running kernel whenever you want), + say M here and read <file:Documentation/kbuild/modules.txt>. The + module will be called iwl3945. diff --git a/drivers/net/wireless/iwlwifi/Makefile b/drivers/net/wireless/iwlwifi/Makefile index aab7d15bd5ed..25be742c69c9 100644 --- a/drivers/net/wireless/iwlwifi/Makefile +++ b/drivers/net/wireless/iwlwifi/Makefile @@ -1,23 +1,36 @@ +obj-$(CONFIG_IWLWIFI) += iwlcore.o +iwlcore-objs := iwl-core.o iwl-eeprom.o iwl-hcmd.o iwl-power.o +iwlcore-objs += iwl-rx.o iwl-tx.o iwl-sta.o +iwlcore-objs += iwl-scan.o iwl-led.o +iwlcore-$(CONFIG_IWL3945) += iwl-legacy.o +iwlcore-$(CONFIG_IWL4965) += iwl-legacy.o +iwlcore-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-debugfs.o +iwlcore-$(CONFIG_IWLWIFI_DEVICE_TRACING) += iwl-devtrace.o + +# If 3945 is selected only, iwl-legacy.o will be added +# to iwlcore-m above, but it needs to be built in. +iwlcore-objs += $(iwlcore-m) + +CFLAGS_iwl-devtrace.o := -I$(src) + # AGN obj-$(CONFIG_IWLAGN) += iwlagn.o iwlagn-objs := iwl-agn.o iwl-agn-rs.o iwl-agn-led.o iwlagn-objs += iwl-agn-ucode.o iwl-agn-tx.o iwlagn-objs += iwl-agn-lib.o iwl-agn-rx.o iwl-agn-calib.o iwlagn-objs += iwl-agn-tt.o iwl-agn-sta.o iwl-agn-eeprom.o - -iwlagn-objs += iwl-core.o iwl-eeprom.o iwl-hcmd.o iwl-power.o -iwlagn-objs += iwl-rx.o iwl-tx.o iwl-sta.o -iwlagn-objs += iwl-scan.o iwl-led.o -iwlagn-objs += iwl-agn-rxon.o iwl-agn-hcmd.o iwl-agn-ict.o -iwlagn-objs += iwl-5000.o -iwlagn-objs += iwl-6000.o -iwlagn-objs += iwl-1000.o -iwlagn-objs += iwl-2000.o - iwlagn-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-agn-debugfs.o -iwlagn-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-debugfs.o -iwlagn-$(CONFIG_IWLWIFI_DEVICE_TRACING) += iwl-devtrace.o -CFLAGS_iwl-devtrace.o := -I$(src) +iwlagn-$(CONFIG_IWL4965) += iwl-4965.o +iwlagn-$(CONFIG_IWL5000) += iwl-agn-rxon.o iwl-agn-hcmd.o iwl-agn-ict.o +iwlagn-$(CONFIG_IWL5000) += iwl-5000.o +iwlagn-$(CONFIG_IWL5000) += iwl-6000.o +iwlagn-$(CONFIG_IWL5000) += iwl-1000.o +iwlagn-$(CONFIG_IWL5000) += iwl-2000.o + +# 3945 +obj-$(CONFIG_IWL3945) += iwl3945.o +iwl3945-objs := iwl3945-base.o iwl-3945.o iwl-3945-rs.o iwl-3945-led.o +iwl3945-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-3945-debugfs.o ccflags-y += -D__CHECK_ENDIAN__ diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-3945-debugfs.c new file mode 100644 index 000000000000..ef0835b01b6b --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945-debugfs.c @@ -0,0 +1,522 @@ +/****************************************************************************** + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + *****************************************************************************/ + +#include "iwl-3945-debugfs.h" + + +static int iwl3945_statistics_flag(struct iwl_priv *priv, char *buf, int bufsz) +{ + int p = 0; + + p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n", + le32_to_cpu(priv->_3945.statistics.flag)); + if (le32_to_cpu(priv->_3945.statistics.flag) & + UCODE_STATISTICS_CLEAR_MSK) + p += scnprintf(buf + p, bufsz - p, + "\tStatistics have been cleared\n"); + p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n", + (le32_to_cpu(priv->_3945.statistics.flag) & + UCODE_STATISTICS_FREQUENCY_MSK) + ? "2.4 GHz" : "5.2 GHz"); + p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n", + (le32_to_cpu(priv->_3945.statistics.flag) & + UCODE_STATISTICS_NARROW_BAND_MSK) + ? "enabled" : "disabled"); + return p; +} + +ssize_t iwl3945_ucode_rx_stats_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_priv *priv = file->private_data; + int pos = 0; + char *buf; + int bufsz = sizeof(struct iwl39_statistics_rx_phy) * 40 + + sizeof(struct iwl39_statistics_rx_non_phy) * 40 + 400; + ssize_t ret; + struct iwl39_statistics_rx_phy *ofdm, *accum_ofdm, *delta_ofdm, *max_ofdm; + struct iwl39_statistics_rx_phy *cck, *accum_cck, *delta_cck, *max_cck; + struct iwl39_statistics_rx_non_phy *general, *accum_general; + struct iwl39_statistics_rx_non_phy *delta_general, *max_general; + + if (!iwl_is_alive(priv)) + return -EAGAIN; + + buf = kzalloc(bufsz, GFP_KERNEL); + if (!buf) { + IWL_ERR(priv, "Can not allocate Buffer\n"); + return -ENOMEM; + } + + /* + * The statistic information display here is based on + * the last statistics notification from uCode + * might not reflect the current uCode activity + */ + ofdm = &priv->_3945.statistics.rx.ofdm; + cck = &priv->_3945.statistics.rx.cck; + general = &priv->_3945.statistics.rx.general; + accum_ofdm = &priv->_3945.accum_statistics.rx.ofdm; + accum_cck = &priv->_3945.accum_statistics.rx.cck; + accum_general = &priv->_3945.accum_statistics.rx.general; + delta_ofdm = &priv->_3945.delta_statistics.rx.ofdm; + delta_cck = &priv->_3945.delta_statistics.rx.cck; + delta_general = &priv->_3945.delta_statistics.rx.general; + max_ofdm = &priv->_3945.max_delta.rx.ofdm; + max_cck = &priv->_3945.max_delta.rx.cck; + max_general = &priv->_3945.max_delta.rx.general; + + pos += iwl3945_statistics_flag(priv, buf, bufsz); + pos += scnprintf(buf + pos, bufsz - pos, "%-32s current" + "acumulative delta max\n", + "Statistics_Rx - OFDM:"); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "ina_cnt:", le32_to_cpu(ofdm->ina_cnt), + accum_ofdm->ina_cnt, + delta_ofdm->ina_cnt, max_ofdm->ina_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "fina_cnt:", + le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt, + delta_ofdm->fina_cnt, max_ofdm->fina_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", "plcp_err:", + le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err, + delta_ofdm->plcp_err, max_ofdm->plcp_err); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", "crc32_err:", + le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err, + delta_ofdm->crc32_err, max_ofdm->crc32_err); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", "overrun_err:", + le32_to_cpu(ofdm->overrun_err), + accum_ofdm->overrun_err, delta_ofdm->overrun_err, + max_ofdm->overrun_err); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "early_overrun_err:", + le32_to_cpu(ofdm->early_overrun_err), + accum_ofdm->early_overrun_err, + delta_ofdm->early_overrun_err, + max_ofdm->early_overrun_err); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "crc32_good:", le32_to_cpu(ofdm->crc32_good), + accum_ofdm->crc32_good, delta_ofdm->crc32_good, + max_ofdm->crc32_good); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", "false_alarm_cnt:", + le32_to_cpu(ofdm->false_alarm_cnt), + accum_ofdm->false_alarm_cnt, + delta_ofdm->false_alarm_cnt, + max_ofdm->false_alarm_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "fina_sync_err_cnt:", + le32_to_cpu(ofdm->fina_sync_err_cnt), + accum_ofdm->fina_sync_err_cnt, + delta_ofdm->fina_sync_err_cnt, + max_ofdm->fina_sync_err_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "sfd_timeout:", + le32_to_cpu(ofdm->sfd_timeout), + accum_ofdm->sfd_timeout, + delta_ofdm->sfd_timeout, + max_ofdm->sfd_timeout); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "fina_timeout:", + le32_to_cpu(ofdm->fina_timeout), + accum_ofdm->fina_timeout, + delta_ofdm->fina_timeout, + max_ofdm->fina_timeout); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "unresponded_rts:", + le32_to_cpu(ofdm->unresponded_rts), + accum_ofdm->unresponded_rts, + delta_ofdm->unresponded_rts, + max_ofdm->unresponded_rts); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "rxe_frame_lmt_ovrun:", + le32_to_cpu(ofdm->rxe_frame_limit_overrun), + accum_ofdm->rxe_frame_limit_overrun, + delta_ofdm->rxe_frame_limit_overrun, + max_ofdm->rxe_frame_limit_overrun); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "sent_ack_cnt:", + le32_to_cpu(ofdm->sent_ack_cnt), + accum_ofdm->sent_ack_cnt, + delta_ofdm->sent_ack_cnt, + max_ofdm->sent_ack_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "sent_cts_cnt:", + le32_to_cpu(ofdm->sent_cts_cnt), + accum_ofdm->sent_cts_cnt, + delta_ofdm->sent_cts_cnt, max_ofdm->sent_cts_cnt); + + pos += scnprintf(buf + pos, bufsz - pos, "%-32s current" + "acumulative delta max\n", + "Statistics_Rx - CCK:"); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "ina_cnt:", + le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt, + delta_cck->ina_cnt, max_cck->ina_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "fina_cnt:", + le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt, + delta_cck->fina_cnt, max_cck->fina_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "plcp_err:", + le32_to_cpu(cck->plcp_err), accum_cck->plcp_err, + delta_cck->plcp_err, max_cck->plcp_err); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "crc32_err:", + le32_to_cpu(cck->crc32_err), accum_cck->crc32_err, + delta_cck->crc32_err, max_cck->crc32_err); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "overrun_err:", + le32_to_cpu(cck->overrun_err), + accum_cck->overrun_err, + delta_cck->overrun_err, max_cck->overrun_err); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "early_overrun_err:", + le32_to_cpu(cck->early_overrun_err), + accum_cck->early_overrun_err, + delta_cck->early_overrun_err, + max_cck->early_overrun_err); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "crc32_good:", + le32_to_cpu(cck->crc32_good), accum_cck->crc32_good, + delta_cck->crc32_good, + max_cck->crc32_good); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "false_alarm_cnt:", + le32_to_cpu(cck->false_alarm_cnt), + accum_cck->false_alarm_cnt, + delta_cck->false_alarm_cnt, max_cck->false_alarm_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "fina_sync_err_cnt:", + le32_to_cpu(cck->fina_sync_err_cnt), + accum_cck->fina_sync_err_cnt, + delta_cck->fina_sync_err_cnt, + max_cck->fina_sync_err_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "sfd_timeout:", + le32_to_cpu(cck->sfd_timeout), + accum_cck->sfd_timeout, + delta_cck->sfd_timeout, max_cck->sfd_timeout); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "fina_timeout:", + le32_to_cpu(cck->fina_timeout), + accum_cck->fina_timeout, + delta_cck->fina_timeout, max_cck->fina_timeout); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "unresponded_rts:", + le32_to_cpu(cck->unresponded_rts), + accum_cck->unresponded_rts, + delta_cck->unresponded_rts, + max_cck->unresponded_rts); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "rxe_frame_lmt_ovrun:", + le32_to_cpu(cck->rxe_frame_limit_overrun), + accum_cck->rxe_frame_limit_overrun, + delta_cck->rxe_frame_limit_overrun, + max_cck->rxe_frame_limit_overrun); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "sent_ack_cnt:", + le32_to_cpu(cck->sent_ack_cnt), + accum_cck->sent_ack_cnt, + delta_cck->sent_ack_cnt, + max_cck->sent_ack_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "sent_cts_cnt:", + le32_to_cpu(cck->sent_cts_cnt), + accum_cck->sent_cts_cnt, + delta_cck->sent_cts_cnt, + max_cck->sent_cts_cnt); + + pos += scnprintf(buf + pos, bufsz - pos, "%-32s current" + "acumulative delta max\n", + "Statistics_Rx - GENERAL:"); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "bogus_cts:", + le32_to_cpu(general->bogus_cts), + accum_general->bogus_cts, + delta_general->bogus_cts, max_general->bogus_cts); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "bogus_ack:", + le32_to_cpu(general->bogus_ack), + accum_general->bogus_ack, + delta_general->bogus_ack, max_general->bogus_ack); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "non_bssid_frames:", + le32_to_cpu(general->non_bssid_frames), + accum_general->non_bssid_frames, + delta_general->non_bssid_frames, + max_general->non_bssid_frames); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "filtered_frames:", + le32_to_cpu(general->filtered_frames), + accum_general->filtered_frames, + delta_general->filtered_frames, + max_general->filtered_frames); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "non_channel_beacons:", + le32_to_cpu(general->non_channel_beacons), + accum_general->non_channel_beacons, + delta_general->non_channel_beacons, + max_general->non_channel_beacons); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); + kfree(buf); + return ret; +} + +ssize_t iwl3945_ucode_tx_stats_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_priv *priv = file->private_data; + int pos = 0; + char *buf; + int bufsz = (sizeof(struct iwl39_statistics_tx) * 48) + 250; + ssize_t ret; + struct iwl39_statistics_tx *tx, *accum_tx, *delta_tx, *max_tx; + + if (!iwl_is_alive(priv)) + return -EAGAIN; + + buf = kzalloc(bufsz, GFP_KERNEL); + if (!buf) { + IWL_ERR(priv, "Can not allocate Buffer\n"); + return -ENOMEM; + } + + /* + * The statistic information display here is based on + * the last statistics notification from uCode + * might not reflect the current uCode activity + */ + tx = &priv->_3945.statistics.tx; + accum_tx = &priv->_3945.accum_statistics.tx; + delta_tx = &priv->_3945.delta_statistics.tx; + max_tx = &priv->_3945.max_delta.tx; + pos += iwl3945_statistics_flag(priv, buf, bufsz); + pos += scnprintf(buf + pos, bufsz - pos, "%-32s current" + "acumulative delta max\n", + "Statistics_Tx:"); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "preamble:", + le32_to_cpu(tx->preamble_cnt), + accum_tx->preamble_cnt, + delta_tx->preamble_cnt, max_tx->preamble_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "rx_detected_cnt:", + le32_to_cpu(tx->rx_detected_cnt), + accum_tx->rx_detected_cnt, + delta_tx->rx_detected_cnt, max_tx->rx_detected_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "bt_prio_defer_cnt:", + le32_to_cpu(tx->bt_prio_defer_cnt), + accum_tx->bt_prio_defer_cnt, + delta_tx->bt_prio_defer_cnt, + max_tx->bt_prio_defer_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "bt_prio_kill_cnt:", + le32_to_cpu(tx->bt_prio_kill_cnt), + accum_tx->bt_prio_kill_cnt, + delta_tx->bt_prio_kill_cnt, + max_tx->bt_prio_kill_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "few_bytes_cnt:", + le32_to_cpu(tx->few_bytes_cnt), + accum_tx->few_bytes_cnt, + delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "cts_timeout:", + le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout, + delta_tx->cts_timeout, max_tx->cts_timeout); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "ack_timeout:", + le32_to_cpu(tx->ack_timeout), + accum_tx->ack_timeout, + delta_tx->ack_timeout, max_tx->ack_timeout); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "expected_ack_cnt:", + le32_to_cpu(tx->expected_ack_cnt), + accum_tx->expected_ack_cnt, + delta_tx->expected_ack_cnt, + max_tx->expected_ack_cnt); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "actual_ack_cnt:", + le32_to_cpu(tx->actual_ack_cnt), + accum_tx->actual_ack_cnt, + delta_tx->actual_ack_cnt, + max_tx->actual_ack_cnt); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); + kfree(buf); + return ret; +} + +ssize_t iwl3945_ucode_general_stats_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_priv *priv = file->private_data; + int pos = 0; + char *buf; + int bufsz = sizeof(struct iwl39_statistics_general) * 10 + 300; + ssize_t ret; + struct iwl39_statistics_general *general, *accum_general; + struct iwl39_statistics_general *delta_general, *max_general; + struct statistics_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg; + struct iwl39_statistics_div *div, *accum_div, *delta_div, *max_div; + + if (!iwl_is_alive(priv)) + return -EAGAIN; + + buf = kzalloc(bufsz, GFP_KERNEL); + if (!buf) { + IWL_ERR(priv, "Can not allocate Buffer\n"); + return -ENOMEM; + } + + /* + * The statistic information display here is based on + * the last statistics notification from uCode + * might not reflect the current uCode activity + */ + general = &priv->_3945.statistics.general; + dbg = &priv->_3945.statistics.general.dbg; + div = &priv->_3945.statistics.general.div; + accum_general = &priv->_3945.accum_statistics.general; + delta_general = &priv->_3945.delta_statistics.general; + max_general = &priv->_3945.max_delta.general; + accum_dbg = &priv->_3945.accum_statistics.general.dbg; + delta_dbg = &priv->_3945.delta_statistics.general.dbg; + max_dbg = &priv->_3945.max_delta.general.dbg; + accum_div = &priv->_3945.accum_statistics.general.div; + delta_div = &priv->_3945.delta_statistics.general.div; + max_div = &priv->_3945.max_delta.general.div; + pos += iwl3945_statistics_flag(priv, buf, bufsz); + pos += scnprintf(buf + pos, bufsz - pos, "%-32s current" + "acumulative delta max\n", + "Statistics_General:"); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "burst_check:", + le32_to_cpu(dbg->burst_check), + accum_dbg->burst_check, + delta_dbg->burst_check, max_dbg->burst_check); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "burst_count:", + le32_to_cpu(dbg->burst_count), + accum_dbg->burst_count, + delta_dbg->burst_count, max_dbg->burst_count); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "sleep_time:", + le32_to_cpu(general->sleep_time), + accum_general->sleep_time, + delta_general->sleep_time, max_general->sleep_time); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "slots_out:", + le32_to_cpu(general->slots_out), + accum_general->slots_out, + delta_general->slots_out, max_general->slots_out); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "slots_idle:", + le32_to_cpu(general->slots_idle), + accum_general->slots_idle, + delta_general->slots_idle, max_general->slots_idle); + pos += scnprintf(buf + pos, bufsz - pos, "ttl_timestamp:\t\t\t%u\n", + le32_to_cpu(general->ttl_timestamp)); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "tx_on_a:", + le32_to_cpu(div->tx_on_a), accum_div->tx_on_a, + delta_div->tx_on_a, max_div->tx_on_a); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "tx_on_b:", + le32_to_cpu(div->tx_on_b), accum_div->tx_on_b, + delta_div->tx_on_b, max_div->tx_on_b); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "exec_time:", + le32_to_cpu(div->exec_time), accum_div->exec_time, + delta_div->exec_time, max_div->exec_time); + pos += scnprintf(buf + pos, bufsz - pos, + " %-30s %10u %10u %10u %10u\n", + "probe_time:", + le32_to_cpu(div->probe_time), accum_div->probe_time, + delta_div->probe_time, max_div->probe_time); + ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); + kfree(buf); + return ret; +} diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-debugfs.h b/drivers/net/wireless/iwlwifi/iwl-3945-debugfs.h new file mode 100644 index 000000000000..70809c53c215 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945-debugfs.h @@ -0,0 +1,60 @@ +/****************************************************************************** + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + *****************************************************************************/ + +#include "iwl-dev.h" +#include "iwl-core.h" +#include "iwl-debug.h" + +#ifdef CONFIG_IWLWIFI_DEBUGFS +ssize_t iwl3945_ucode_rx_stats_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos); +ssize_t iwl3945_ucode_tx_stats_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos); +ssize_t iwl3945_ucode_general_stats_read(struct file *file, + char __user *user_buf, size_t count, + loff_t *ppos); +#else +static ssize_t iwl3945_ucode_rx_stats_read(struct file *file, + char __user *user_buf, size_t count, + loff_t *ppos) +{ + return 0; +} +static ssize_t iwl3945_ucode_tx_stats_read(struct file *file, + char __user *user_buf, size_t count, + loff_t *ppos) +{ + return 0; +} +static ssize_t iwl3945_ucode_general_stats_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + return 0; +} +#endif diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-fh.h b/drivers/net/wireless/iwlwifi/iwl-3945-fh.h new file mode 100644 index 000000000000..2c9ed2b502a3 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945-fh.h @@ -0,0 +1,188 @@ +/****************************************************************************** + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + * BSD LICENSE + * + * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + *****************************************************************************/ +#ifndef __iwl_3945_fh_h__ +#define __iwl_3945_fh_h__ + +/************************************/ +/* iwl3945 Flow Handler Definitions */ +/************************************/ + +/** + * This I/O area is directly read/writable by driver (e.g. Linux uses writel()) + * Addresses are offsets from device's PCI hardware base address. + */ +#define FH39_MEM_LOWER_BOUND (0x0800) +#define FH39_MEM_UPPER_BOUND (0x1000) + +#define FH39_CBCC_TABLE (FH39_MEM_LOWER_BOUND + 0x140) +#define FH39_TFDB_TABLE (FH39_MEM_LOWER_BOUND + 0x180) +#define FH39_RCSR_TABLE (FH39_MEM_LOWER_BOUND + 0x400) +#define FH39_RSSR_TABLE (FH39_MEM_LOWER_BOUND + 0x4c0) +#define FH39_TCSR_TABLE (FH39_MEM_LOWER_BOUND + 0x500) +#define FH39_TSSR_TABLE (FH39_MEM_LOWER_BOUND + 0x680) + +/* TFDB (Transmit Frame Buffer Descriptor) */ +#define FH39_TFDB(_ch, buf) (FH39_TFDB_TABLE + \ + ((_ch) * 2 + (buf)) * 0x28) +#define FH39_TFDB_CHNL_BUF_CTRL_REG(_ch) (FH39_TFDB_TABLE + 0x50 * (_ch)) + +/* CBCC channel is [0,2] */ +#define FH39_CBCC(_ch) (FH39_CBCC_TABLE + (_ch) * 0x8) +#define FH39_CBCC_CTRL(_ch) (FH39_CBCC(_ch) + 0x00) +#define FH39_CBCC_BASE(_ch) (FH39_CBCC(_ch) + 0x04) + +/* RCSR channel is [0,2] */ +#define FH39_RCSR(_ch) (FH39_RCSR_TABLE + (_ch) * 0x40) +#define FH39_RCSR_CONFIG(_ch) (FH39_RCSR(_ch) + 0x00) +#define FH39_RCSR_RBD_BASE(_ch) (FH39_RCSR(_ch) + 0x04) +#define FH39_RCSR_WPTR(_ch) (FH39_RCSR(_ch) + 0x20) +#define FH39_RCSR_RPTR_ADDR(_ch) (FH39_RCSR(_ch) + 0x24) + +#define FH39_RSCSR_CHNL0_WPTR (FH39_RCSR_WPTR(0)) + +/* RSSR */ +#define FH39_RSSR_CTRL (FH39_RSSR_TABLE + 0x000) +#define FH39_RSSR_STATUS (FH39_RSSR_TABLE + 0x004) + +/* TCSR */ +#define FH39_TCSR(_ch) (FH39_TCSR_TABLE + (_ch) * 0x20) +#define FH39_TCSR_CONFIG(_ch) (FH39_TCSR(_ch) + 0x00) +#define FH39_TCSR_CREDIT(_ch) (FH39_TCSR(_ch) + 0x04) +#define FH39_TCSR_BUFF_STTS(_ch) (FH39_TCSR(_ch) + 0x08) + +/* TSSR */ +#define FH39_TSSR_CBB_BASE (FH39_TSSR_TABLE + 0x000) +#define FH39_TSSR_MSG_CONFIG (FH39_TSSR_TABLE + 0x008) +#define FH39_TSSR_TX_STATUS (FH39_TSSR_TABLE + 0x010) + + +/* DBM */ + +#define FH39_SRVC_CHNL (6) + +#define FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE (20) +#define FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH (4) + +#define FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN (0x08000000) + +#define FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE (0x80000000) + +#define FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE (0x20000000) + +#define FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 (0x01000000) + +#define FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST (0x00001000) + +#define FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH (0x00000000) + +#define FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF (0x00000000) +#define FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_DRIVER (0x00000001) + +#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE_VAL (0x00000000) +#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL (0x00000008) + +#define FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD (0x00200000) + +#define FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT (0x00000000) + +#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE (0x00000000) +#define FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE (0x80000000) + +#define FH39_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID (0x00004000) + +#define FH39_TCSR_CHNL_TX_BUF_STS_REG_BIT_TFDB_WPTR (0x00000001) + +#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON (0xFF000000) +#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON (0x00FF0000) + +#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B (0x00000400) + +#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON (0x00000100) +#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON (0x00000080) + +#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH (0x00000020) +#define FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH (0x00000005) + +#define FH39_TSSR_TX_STATUS_REG_BIT_BUFS_EMPTY(_ch) (BIT(_ch) << 24) +#define FH39_TSSR_TX_STATUS_REG_BIT_NO_PEND_REQ(_ch) (BIT(_ch) << 16) + +#define FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(_ch) \ + (FH39_TSSR_TX_STATUS_REG_BIT_BUFS_EMPTY(_ch) | \ + FH39_TSSR_TX_STATUS_REG_BIT_NO_PEND_REQ(_ch)) + +#define FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0x01000000) + +struct iwl3945_tfd_tb { + __le32 addr; + __le32 len; +} __packed; + +struct iwl3945_tfd { + __le32 control_flags; + struct iwl3945_tfd_tb tbs[4]; + u8 __pad[28]; +} __packed; + + +#endif /* __iwl_3945_fh_h__ */ + diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h new file mode 100644 index 000000000000..65b5834da28c --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h @@ -0,0 +1,294 @@ +/****************************************************************************** + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + * BSD LICENSE + * + * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + *****************************************************************************/ +/* + * Please use this file (iwl-3945-hw.h) only for hardware-related definitions. + * Please use iwl-commands.h for uCode API definitions. + * Please use iwl-3945.h for driver implementation definitions. + */ + +#ifndef __iwl_3945_hw__ +#define __iwl_3945_hw__ + +#include "iwl-eeprom.h" + +/* RSSI to dBm */ +#define IWL39_RSSI_OFFSET 95 + +#define IWL_DEFAULT_TX_POWER 0x0F + +/* + * EEPROM related constants, enums, and structures. + */ +#define EEPROM_SKU_CAP_OP_MODE_MRC (1 << 7) + +/* + * Mapping of a Tx power level, at factory calibration temperature, + * to a radio/DSP gain table index. + * One for each of 5 "sample" power levels in each band. + * v_det is measured at the factory, using the 3945's built-in power amplifier + * (PA) output voltage detector. This same detector is used during Tx of + * long packets in normal operation to provide feedback as to proper output + * level. + * Data copied from EEPROM. + * DO NOT ALTER THIS STRUCTURE!!! + */ +struct iwl3945_eeprom_txpower_sample { + u8 gain_index; /* index into power (gain) setup table ... */ + s8 power; /* ... for this pwr level for this chnl group */ + u16 v_det; /* PA output voltage */ +} __packed; + +/* + * Mappings of Tx power levels -> nominal radio/DSP gain table indexes. + * One for each channel group (a.k.a. "band") (1 for BG, 4 for A). + * Tx power setup code interpolates between the 5 "sample" power levels + * to determine the nominal setup for a requested power level. + * Data copied from EEPROM. + * DO NOT ALTER THIS STRUCTURE!!! + */ +struct iwl3945_eeprom_txpower_group { + struct iwl3945_eeprom_txpower_sample samples[5]; /* 5 power levels */ + s32 a, b, c, d, e; /* coefficients for voltage->power + * formula (signed) */ + s32 Fa, Fb, Fc, Fd, Fe; /* these modify coeffs based on + * frequency (signed) */ + s8 saturation_power; /* highest power possible by h/w in this + * band */ + u8 group_channel; /* "representative" channel # in this band */ + s16 temperature; /* h/w temperature at factory calib this band + * (signed) */ +} __packed; + +/* + * Temperature-based Tx-power compensation data, not band-specific. + * These coefficients are use to modify a/b/c/d/e coeffs based on + * difference between current temperature and factory calib temperature. + * Data copied from EEPROM. + */ +struct iwl3945_eeprom_temperature_corr { + u32 Ta; + u32 Tb; + u32 Tc; + u32 Td; + u32 Te; +} __packed; + +/* + * EEPROM map + */ +struct iwl3945_eeprom { + u8 reserved0[16]; + u16 device_id; /* abs.ofs: 16 */ + u8 reserved1[2]; + u16 pmc; /* abs.ofs: 20 */ + u8 reserved2[20]; + u8 mac_address[6]; /* abs.ofs: 42 */ + u8 reserved3[58]; + u16 board_revision; /* abs.ofs: 106 */ + u8 reserved4[11]; + u8 board_pba_number[9]; /* abs.ofs: 119 */ + u8 reserved5[8]; + u16 version; /* abs.ofs: 136 */ + u8 sku_cap; /* abs.ofs: 138 */ + u8 leds_mode; /* abs.ofs: 139 */ + u16 oem_mode; + u16 wowlan_mode; /* abs.ofs: 142 */ + u16 leds_time_interval; /* abs.ofs: 144 */ + u8 leds_off_time; /* abs.ofs: 146 */ + u8 leds_on_time; /* abs.ofs: 147 */ + u8 almgor_m_version; /* abs.ofs: 148 */ + u8 antenna_switch_type; /* abs.ofs: 149 */ + u8 reserved6[42]; + u8 sku_id[4]; /* abs.ofs: 192 */ + +/* + * Per-channel regulatory data. + * + * Each channel that *might* be supported by 3945 or 4965 has a fixed location + * in EEPROM containing EEPROM_CHANNEL_* usage flags (LSB) and max regulatory + * txpower (MSB). + * + * Entries immediately below are for 20 MHz channel width. HT40 (40 MHz) + * channels (only for 4965, not supported by 3945) appear later in the EEPROM. + * + * 2.4 GHz channels 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 + */ + u16 band_1_count; /* abs.ofs: 196 */ + struct iwl_eeprom_channel band_1_channels[14]; /* abs.ofs: 198 */ + +/* + * 4.9 GHz channels 183, 184, 185, 187, 188, 189, 192, 196, + * 5.0 GHz channels 7, 8, 11, 12, 16 + * (4915-5080MHz) (none of these is ever supported) + */ + u16 band_2_count; /* abs.ofs: 226 */ + struct iwl_eeprom_channel band_2_channels[13]; /* abs.ofs: 228 */ + +/* + * 5.2 GHz channels 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 + * (5170-5320MHz) + */ + u16 band_3_count; /* abs.ofs: 254 */ + struct iwl_eeprom_channel band_3_channels[12]; /* abs.ofs: 256 */ + +/* + * 5.5 GHz channels 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 + * (5500-5700MHz) + */ + u16 band_4_count; /* abs.ofs: 280 */ + struct iwl_eeprom_channel band_4_channels[11]; /* abs.ofs: 282 */ + +/* + * 5.7 GHz channels 145, 149, 153, 157, 161, 165 + * (5725-5825MHz) + */ + u16 band_5_count; /* abs.ofs: 304 */ + struct iwl_eeprom_channel band_5_channels[6]; /* abs.ofs: 306 */ + + u8 reserved9[194]; + +/* + * 3945 Txpower calibration data. + */ +#define IWL_NUM_TX_CALIB_GROUPS 5 + struct iwl3945_eeprom_txpower_group groups[IWL_NUM_TX_CALIB_GROUPS]; +/* abs.ofs: 512 */ + struct iwl3945_eeprom_temperature_corr corrections; /* abs.ofs: 832 */ + u8 reserved16[172]; /* fill out to full 1024 byte block */ +} __packed; + +#define IWL3945_EEPROM_IMG_SIZE 1024 + +/* End of EEPROM */ + +#define PCI_CFG_REV_ID_BIT_BASIC_SKU (0x40) /* bit 6 */ +#define PCI_CFG_REV_ID_BIT_RTP (0x80) /* bit 7 */ + +/* 4 DATA + 1 CMD. There are 2 HCCA queues that are not used. */ +#define IWL39_NUM_QUEUES 5 +#define IWL39_CMD_QUEUE_NUM 4 + +#define IWL_DEFAULT_TX_RETRY 15 + +/*********************************************/ + +#define RFD_SIZE 4 +#define NUM_TFD_CHUNKS 4 + +#define RX_QUEUE_SIZE 256 +#define RX_QUEUE_MASK 255 +#define RX_QUEUE_SIZE_LOG 8 + +#define U32_PAD(n) ((4-(n))&0x3) + +#define TFD_CTL_COUNT_SET(n) (n << 24) +#define TFD_CTL_COUNT_GET(ctl) ((ctl >> 24) & 7) +#define TFD_CTL_PAD_SET(n) (n << 28) +#define TFD_CTL_PAD_GET(ctl) (ctl >> 28) + +/* Sizes and addresses for instruction and data memory (SRAM) in + * 3945's embedded processor. Driver access is via HBUS_TARG_MEM_* regs. */ +#define IWL39_RTC_INST_LOWER_BOUND (0x000000) +#define IWL39_RTC_INST_UPPER_BOUND (0x014000) + +#define IWL39_RTC_DATA_LOWER_BOUND (0x800000) +#define IWL39_RTC_DATA_UPPER_BOUND (0x808000) + +#define IWL39_RTC_INST_SIZE (IWL39_RTC_INST_UPPER_BOUND - \ + IWL39_RTC_INST_LOWER_BOUND) +#define IWL39_RTC_DATA_SIZE (IWL39_RTC_DATA_UPPER_BOUND - \ + IWL39_RTC_DATA_LOWER_BOUND) + +#define IWL39_MAX_INST_SIZE IWL39_RTC_INST_SIZE +#define IWL39_MAX_DATA_SIZE IWL39_RTC_DATA_SIZE + +/* Size of uCode instruction memory in bootstrap state machine */ +#define IWL39_MAX_BSM_SIZE IWL39_RTC_INST_SIZE + +static inline int iwl3945_hw_valid_rtc_data_addr(u32 addr) +{ + return (addr >= IWL39_RTC_DATA_LOWER_BOUND) && + (addr < IWL39_RTC_DATA_UPPER_BOUND); +} + +/* Base physical address of iwl3945_shared is provided to FH_TSSR_CBB_BASE + * and &iwl3945_shared.rx_read_ptr[0] is provided to FH_RCSR_RPTR_ADDR(0) */ +struct iwl3945_shared { + __le32 tx_base_ptr[8]; +} __packed; + +static inline u8 iwl3945_hw_get_rate(__le16 rate_n_flags) +{ + return le16_to_cpu(rate_n_flags) & 0xFF; +} + +static inline u16 iwl3945_hw_get_rate_n_flags(__le16 rate_n_flags) +{ + return le16_to_cpu(rate_n_flags); +} + +static inline __le16 iwl3945_hw_set_rate_n_flags(u8 rate, u16 flags) +{ + return cpu_to_le16((u16)rate|flags); +} +#endif diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-led.c b/drivers/net/wireless/iwlwifi/iwl-3945-led.c new file mode 100644 index 000000000000..dc7c3a4167a9 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945-led.c @@ -0,0 +1,64 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/wireless.h> +#include <net/mac80211.h> +#include <linux/etherdevice.h> +#include <asm/unaligned.h> + +#include "iwl-commands.h" +#include "iwl-3945.h" +#include "iwl-core.h" +#include "iwl-dev.h" +#include "iwl-3945-led.h" + + +/* Send led command */ +static int iwl3945_send_led_cmd(struct iwl_priv *priv, + struct iwl_led_cmd *led_cmd) +{ + struct iwl_host_cmd cmd = { + .id = REPLY_LEDS_CMD, + .len = sizeof(struct iwl_led_cmd), + .data = led_cmd, + .flags = CMD_ASYNC, + .callback = NULL, + }; + + return iwl_send_cmd(priv, &cmd); +} + +const struct iwl_led_ops iwl3945_led_ops = { + .cmd = iwl3945_send_led_cmd, +}; diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-led.h b/drivers/net/wireless/iwlwifi/iwl-3945-led.h new file mode 100644 index 000000000000..ce990adc51e7 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945-led.h @@ -0,0 +1,32 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ + +#ifndef __iwl_3945_led_h__ +#define __iwl_3945_led_h__ + +extern const struct iwl_led_ops iwl3945_led_ops; + +#endif /* __iwl_3945_led_h__ */ diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c new file mode 100644 index 000000000000..1f3e7e34fbc7 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c @@ -0,0 +1,995 @@ +/****************************************************************************** + * + * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/skbuff.h> +#include <linux/slab.h> +#include <linux/wireless.h> +#include <net/mac80211.h> + +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/delay.h> + +#include <linux/workqueue.h> + +#include "iwl-commands.h" +#include "iwl-3945.h" +#include "iwl-sta.h" + +#define RS_NAME "iwl-3945-rs" + +static s32 iwl3945_expected_tpt_g[IWL_RATE_COUNT_3945] = { + 7, 13, 35, 58, 0, 0, 76, 104, 130, 168, 191, 202 +}; + +static s32 iwl3945_expected_tpt_g_prot[IWL_RATE_COUNT_3945] = { + 7, 13, 35, 58, 0, 0, 0, 80, 93, 113, 123, 125 +}; + +static s32 iwl3945_expected_tpt_a[IWL_RATE_COUNT_3945] = { + 0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186 +}; + +static s32 iwl3945_expected_tpt_b[IWL_RATE_COUNT_3945] = { + 7, 13, 35, 58, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +struct iwl3945_tpt_entry { + s8 min_rssi; + u8 index; +}; + +static struct iwl3945_tpt_entry iwl3945_tpt_table_a[] = { + {-60, IWL_RATE_54M_INDEX}, + {-64, IWL_RATE_48M_INDEX}, + {-72, IWL_RATE_36M_INDEX}, + {-80, IWL_RATE_24M_INDEX}, + {-84, IWL_RATE_18M_INDEX}, + {-85, IWL_RATE_12M_INDEX}, + {-87, IWL_RATE_9M_INDEX}, + {-89, IWL_RATE_6M_INDEX} +}; + +static struct iwl3945_tpt_entry iwl3945_tpt_table_g[] = { + {-60, IWL_RATE_54M_INDEX}, + {-64, IWL_RATE_48M_INDEX}, + {-68, IWL_RATE_36M_INDEX}, + {-80, IWL_RATE_24M_INDEX}, + {-84, IWL_RATE_18M_INDEX}, + {-85, IWL_RATE_12M_INDEX}, + {-86, IWL_RATE_11M_INDEX}, + {-88, IWL_RATE_5M_INDEX}, + {-90, IWL_RATE_2M_INDEX}, + {-92, IWL_RATE_1M_INDEX} +}; + +#define IWL_RATE_MAX_WINDOW 62 +#define IWL_RATE_FLUSH (3*HZ) +#define IWL_RATE_WIN_FLUSH (HZ/2) +#define IWL39_RATE_HIGH_TH 11520 +#define IWL_SUCCESS_UP_TH 8960 +#define IWL_SUCCESS_DOWN_TH 10880 +#define IWL_RATE_MIN_FAILURE_TH 6 +#define IWL_RATE_MIN_SUCCESS_TH 8 +#define IWL_RATE_DECREASE_TH 1920 +#define IWL_RATE_RETRY_TH 15 + +static u8 iwl3945_get_rate_index_by_rssi(s32 rssi, enum ieee80211_band band) +{ + u32 index = 0; + u32 table_size = 0; + struct iwl3945_tpt_entry *tpt_table = NULL; + + if ((rssi < IWL_MIN_RSSI_VAL) || (rssi > IWL_MAX_RSSI_VAL)) + rssi = IWL_MIN_RSSI_VAL; + + switch (band) { + case IEEE80211_BAND_2GHZ: + tpt_table = iwl3945_tpt_table_g; + table_size = ARRAY_SIZE(iwl3945_tpt_table_g); + break; + + case IEEE80211_BAND_5GHZ: + tpt_table = iwl3945_tpt_table_a; + table_size = ARRAY_SIZE(iwl3945_tpt_table_a); + break; + + default: + BUG(); + break; + } + + while ((index < table_size) && (rssi < tpt_table[index].min_rssi)) + index++; + + index = min(index, (table_size - 1)); + + return tpt_table[index].index; +} + +static void iwl3945_clear_window(struct iwl3945_rate_scale_data *window) +{ + window->data = 0; + window->success_counter = 0; + window->success_ratio = -1; + window->counter = 0; + window->average_tpt = IWL_INVALID_VALUE; + window->stamp = 0; +} + +/** + * iwl3945_rate_scale_flush_windows - flush out the rate scale windows + * + * Returns the number of windows that have gathered data but were + * not flushed. If there were any that were not flushed, then + * reschedule the rate flushing routine. + */ +static int iwl3945_rate_scale_flush_windows(struct iwl3945_rs_sta *rs_sta) +{ + int unflushed = 0; + int i; + unsigned long flags; + struct iwl_priv *priv __maybe_unused = rs_sta->priv; + + /* + * For each rate, if we have collected data on that rate + * and it has been more than IWL_RATE_WIN_FLUSH + * since we flushed, clear out the gathered statistics + */ + for (i = 0; i < IWL_RATE_COUNT_3945; i++) { + if (!rs_sta->win[i].counter) + continue; + + spin_lock_irqsave(&rs_sta->lock, flags); + if (time_after(jiffies, rs_sta->win[i].stamp + + IWL_RATE_WIN_FLUSH)) { + IWL_DEBUG_RATE(priv, "flushing %d samples of rate " + "index %d\n", + rs_sta->win[i].counter, i); + iwl3945_clear_window(&rs_sta->win[i]); + } else + unflushed++; + spin_unlock_irqrestore(&rs_sta->lock, flags); + } + + return unflushed; +} + +#define IWL_RATE_FLUSH_MAX 5000 /* msec */ +#define IWL_RATE_FLUSH_MIN 50 /* msec */ +#define IWL_AVERAGE_PACKETS 1500 + +static void iwl3945_bg_rate_scale_flush(unsigned long data) +{ + struct iwl3945_rs_sta *rs_sta = (void *)data; + struct iwl_priv *priv __maybe_unused = rs_sta->priv; + int unflushed = 0; + unsigned long flags; + u32 packet_count, duration, pps; + + IWL_DEBUG_RATE(priv, "enter\n"); + + unflushed = iwl3945_rate_scale_flush_windows(rs_sta); + + spin_lock_irqsave(&rs_sta->lock, flags); + + /* Number of packets Rx'd since last time this timer ran */ + packet_count = (rs_sta->tx_packets - rs_sta->last_tx_packets) + 1; + + rs_sta->last_tx_packets = rs_sta->tx_packets + 1; + + if (unflushed) { + duration = + jiffies_to_msecs(jiffies - rs_sta->last_partial_flush); + + IWL_DEBUG_RATE(priv, "Tx'd %d packets in %dms\n", + packet_count, duration); + + /* Determine packets per second */ + if (duration) + pps = (packet_count * 1000) / duration; + else + pps = 0; + + if (pps) { + duration = (IWL_AVERAGE_PACKETS * 1000) / pps; + if (duration < IWL_RATE_FLUSH_MIN) + duration = IWL_RATE_FLUSH_MIN; + else if (duration > IWL_RATE_FLUSH_MAX) + duration = IWL_RATE_FLUSH_MAX; + } else + duration = IWL_RATE_FLUSH_MAX; + + rs_sta->flush_time = msecs_to_jiffies(duration); + + IWL_DEBUG_RATE(priv, "new flush period: %d msec ave %d\n", + duration, packet_count); + + mod_timer(&rs_sta->rate_scale_flush, jiffies + + rs_sta->flush_time); + + rs_sta->last_partial_flush = jiffies; + } else { + rs_sta->flush_time = IWL_RATE_FLUSH; + rs_sta->flush_pending = 0; + } + /* If there weren't any unflushed entries, we don't schedule the timer + * to run again */ + + rs_sta->last_flush = jiffies; + + spin_unlock_irqrestore(&rs_sta->lock, flags); + + IWL_DEBUG_RATE(priv, "leave\n"); +} + +/** + * iwl3945_collect_tx_data - Update the success/failure sliding window + * + * We keep a sliding window of the last 64 packets transmitted + * at this rate. window->data contains the bitmask of successful + * packets. + */ +static void iwl3945_collect_tx_data(struct iwl3945_rs_sta *rs_sta, + struct iwl3945_rate_scale_data *window, + int success, int retries, int index) +{ + unsigned long flags; + s32 fail_count; + struct iwl_priv *priv __maybe_unused = rs_sta->priv; + + if (!retries) { + IWL_DEBUG_RATE(priv, "leave: retries == 0 -- should be at least 1\n"); + return; + } + + spin_lock_irqsave(&rs_sta->lock, flags); + + /* + * Keep track of only the latest 62 tx frame attempts in this rate's + * history window; anything older isn't really relevant any more. + * If we have filled up the sliding window, drop the oldest attempt; + * if the oldest attempt (highest bit in bitmap) shows "success", + * subtract "1" from the success counter (this is the main reason + * we keep these bitmaps!). + * */ + while (retries > 0) { + if (window->counter >= IWL_RATE_MAX_WINDOW) { + + /* remove earliest */ + window->counter = IWL_RATE_MAX_WINDOW - 1; + + if (window->data & (1ULL << (IWL_RATE_MAX_WINDOW - 1))) { + window->data &= ~(1ULL << (IWL_RATE_MAX_WINDOW - 1)); + window->success_counter--; + } + } + + /* Increment frames-attempted counter */ + window->counter++; + + /* Shift bitmap by one frame (throw away oldest history), + * OR in "1", and increment "success" if this + * frame was successful. */ + window->data <<= 1; + if (success > 0) { + window->success_counter++; + window->data |= 0x1; + success--; + } + + retries--; + } + + /* Calculate current success ratio, avoid divide-by-0! */ + if (window->counter > 0) + window->success_ratio = 128 * (100 * window->success_counter) + / window->counter; + else + window->success_ratio = IWL_INVALID_VALUE; + + fail_count = window->counter - window->success_counter; + + /* Calculate average throughput, if we have enough history. */ + if ((fail_count >= IWL_RATE_MIN_FAILURE_TH) || + (window->success_counter >= IWL_RATE_MIN_SUCCESS_TH)) + window->average_tpt = ((window->success_ratio * + rs_sta->expected_tpt[index] + 64) / 128); + else + window->average_tpt = IWL_INVALID_VALUE; + + /* Tag this window as having been updated */ + window->stamp = jiffies; + + spin_unlock_irqrestore(&rs_sta->lock, flags); + +} + +/* + * Called after adding a new station to initialize rate scaling + */ +void iwl3945_rs_rate_init(struct iwl_priv *priv, struct ieee80211_sta *sta, u8 sta_id) +{ + struct ieee80211_hw *hw = priv->hw; + struct ieee80211_conf *conf = &priv->hw->conf; + struct iwl3945_sta_priv *psta; + struct iwl3945_rs_sta *rs_sta; + struct ieee80211_supported_band *sband; + int i; + + IWL_DEBUG_INFO(priv, "enter\n"); + if (sta_id == priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id) + goto out; + + psta = (struct iwl3945_sta_priv *) sta->drv_priv; + rs_sta = &psta->rs_sta; + sband = hw->wiphy->bands[conf->channel->band]; + + rs_sta->priv = priv; + + rs_sta->start_rate = IWL_RATE_INVALID; + + /* default to just 802.11b */ + rs_sta->expected_tpt = iwl3945_expected_tpt_b; + + rs_sta->last_partial_flush = jiffies; + rs_sta->last_flush = jiffies; + rs_sta->flush_time = IWL_RATE_FLUSH; + rs_sta->last_tx_packets = 0; + + rs_sta->rate_scale_flush.data = (unsigned long)rs_sta; + rs_sta->rate_scale_flush.function = iwl3945_bg_rate_scale_flush; + + for (i = 0; i < IWL_RATE_COUNT_3945; i++) + iwl3945_clear_window(&rs_sta->win[i]); + + /* TODO: what is a good starting rate for STA? About middle? Maybe not + * the lowest or the highest rate.. Could consider using RSSI from + * previous packets? Need to have IEEE 802.1X auth succeed immediately + * after assoc.. */ + + for (i = sband->n_bitrates - 1; i >= 0; i--) { + if (sta->supp_rates[sband->band] & (1 << i)) { + rs_sta->last_txrate_idx = i; + break; + } + } + + priv->_3945.sta_supp_rates = sta->supp_rates[sband->band]; + /* For 5 GHz band it start at IWL_FIRST_OFDM_RATE */ + if (sband->band == IEEE80211_BAND_5GHZ) { + rs_sta->last_txrate_idx += IWL_FIRST_OFDM_RATE; + priv->_3945.sta_supp_rates = priv->_3945.sta_supp_rates << + IWL_FIRST_OFDM_RATE; + } + +out: + priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; + + IWL_DEBUG_INFO(priv, "leave\n"); +} + +static void *rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) +{ + return hw->priv; +} + +/* rate scale requires free function to be implemented */ +static void rs_free(void *priv) +{ + return; +} + +static void *rs_alloc_sta(void *iwl_priv, struct ieee80211_sta *sta, gfp_t gfp) +{ + struct iwl3945_rs_sta *rs_sta; + struct iwl3945_sta_priv *psta = (void *) sta->drv_priv; + struct iwl_priv *priv __maybe_unused = iwl_priv; + + IWL_DEBUG_RATE(priv, "enter\n"); + + rs_sta = &psta->rs_sta; + + spin_lock_init(&rs_sta->lock); + init_timer(&rs_sta->rate_scale_flush); + + IWL_DEBUG_RATE(priv, "leave\n"); + + return rs_sta; +} + +static void rs_free_sta(void *iwl_priv, struct ieee80211_sta *sta, + void *priv_sta) +{ + struct iwl3945_rs_sta *rs_sta = priv_sta; + + /* + * Be careful not to use any members of iwl3945_rs_sta (like trying + * to use iwl_priv to print out debugging) since it may not be fully + * initialized at this point. + */ + del_timer_sync(&rs_sta->rate_scale_flush); +} + + +/** + * rs_tx_status - Update rate control values based on Tx results + * + * NOTE: Uses iwl_priv->retry_rate for the # of retries attempted by + * the hardware for each rate. + */ +static void rs_tx_status(void *priv_rate, struct ieee80211_supported_band *sband, + struct ieee80211_sta *sta, void *priv_sta, + struct sk_buff *skb) +{ + s8 retries = 0, current_count; + int scale_rate_index, first_index, last_index; + unsigned long flags; + struct iwl_priv *priv = (struct iwl_priv *)priv_rate; + struct iwl3945_rs_sta *rs_sta = priv_sta; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + + IWL_DEBUG_RATE(priv, "enter\n"); + + retries = info->status.rates[0].count; + /* Sanity Check for retries */ + if (retries > IWL_RATE_RETRY_TH) + retries = IWL_RATE_RETRY_TH; + + first_index = sband->bitrates[info->status.rates[0].idx].hw_value; + if ((first_index < 0) || (first_index >= IWL_RATE_COUNT_3945)) { + IWL_DEBUG_RATE(priv, "leave: Rate out of bounds: %d\n", first_index); + return; + } + + if (!priv_sta) { + IWL_DEBUG_RATE(priv, "leave: No STA priv data to update!\n"); + return; + } + + /* Treat uninitialized rate scaling data same as non-existing. */ + if (!rs_sta->priv) { + IWL_DEBUG_RATE(priv, "leave: STA priv data uninitialized!\n"); + return; + } + + + rs_sta->tx_packets++; + + scale_rate_index = first_index; + last_index = first_index; + + /* + * Update the window for each rate. We determine which rates + * were Tx'd based on the total number of retries vs. the number + * of retries configured for each rate -- currently set to the + * priv value 'retry_rate' vs. rate specific + * + * On exit from this while loop last_index indicates the rate + * at which the frame was finally transmitted (or failed if no + * ACK) + */ + while (retries > 1) { + if ((retries - 1) < priv->retry_rate) { + current_count = (retries - 1); + last_index = scale_rate_index; + } else { + current_count = priv->retry_rate; + last_index = iwl3945_rs_next_rate(priv, + scale_rate_index); + } + + /* Update this rate accounting for as many retries + * as was used for it (per current_count) */ + iwl3945_collect_tx_data(rs_sta, + &rs_sta->win[scale_rate_index], + 0, current_count, scale_rate_index); + IWL_DEBUG_RATE(priv, "Update rate %d for %d retries.\n", + scale_rate_index, current_count); + + retries -= current_count; + + scale_rate_index = last_index; + } + + + /* Update the last index window with success/failure based on ACK */ + IWL_DEBUG_RATE(priv, "Update rate %d with %s.\n", + last_index, + (info->flags & IEEE80211_TX_STAT_ACK) ? + "success" : "failure"); + iwl3945_collect_tx_data(rs_sta, + &rs_sta->win[last_index], + info->flags & IEEE80211_TX_STAT_ACK, 1, last_index); + + /* We updated the rate scale window -- if its been more than + * flush_time since the last run, schedule the flush + * again */ + spin_lock_irqsave(&rs_sta->lock, flags); + + if (!rs_sta->flush_pending && + time_after(jiffies, rs_sta->last_flush + + rs_sta->flush_time)) { + + rs_sta->last_partial_flush = jiffies; + rs_sta->flush_pending = 1; + mod_timer(&rs_sta->rate_scale_flush, + jiffies + rs_sta->flush_time); + } + + spin_unlock_irqrestore(&rs_sta->lock, flags); + + IWL_DEBUG_RATE(priv, "leave\n"); +} + +static u16 iwl3945_get_adjacent_rate(struct iwl3945_rs_sta *rs_sta, + u8 index, u16 rate_mask, enum ieee80211_band band) +{ + u8 high = IWL_RATE_INVALID; + u8 low = IWL_RATE_INVALID; + struct iwl_priv *priv __maybe_unused = rs_sta->priv; + + /* 802.11A walks to the next literal adjacent rate in + * the rate table */ + if (unlikely(band == IEEE80211_BAND_5GHZ)) { + int i; + u32 mask; + + /* Find the previous rate that is in the rate mask */ + i = index - 1; + for (mask = (1 << i); i >= 0; i--, mask >>= 1) { + if (rate_mask & mask) { + low = i; + break; + } + } + + /* Find the next rate that is in the rate mask */ + i = index + 1; + for (mask = (1 << i); i < IWL_RATE_COUNT_3945; + i++, mask <<= 1) { + if (rate_mask & mask) { + high = i; + break; + } + } + + return (high << 8) | low; + } + + low = index; + while (low != IWL_RATE_INVALID) { + if (rs_sta->tgg) + low = iwl3945_rates[low].prev_rs_tgg; + else + low = iwl3945_rates[low].prev_rs; + if (low == IWL_RATE_INVALID) + break; + if (rate_mask & (1 << low)) + break; + IWL_DEBUG_RATE(priv, "Skipping masked lower rate: %d\n", low); + } + + high = index; + while (high != IWL_RATE_INVALID) { + if (rs_sta->tgg) + high = iwl3945_rates[high].next_rs_tgg; + else + high = iwl3945_rates[high].next_rs; + if (high == IWL_RATE_INVALID) + break; + if (rate_mask & (1 << high)) + break; + IWL_DEBUG_RATE(priv, "Skipping masked higher rate: %d\n", high); + } + + return (high << 8) | low; +} + +/** + * rs_get_rate - find the rate for the requested packet + * + * Returns the ieee80211_rate structure allocated by the driver. + * + * The rate control algorithm has no internal mapping between hw_mode's + * rate ordering and the rate ordering used by the rate control algorithm. + * + * The rate control algorithm uses a single table of rates that goes across + * the entire A/B/G spectrum vs. being limited to just one particular + * hw_mode. + * + * As such, we can't convert the index obtained below into the hw_mode's + * rate table and must reference the driver allocated rate table + * + */ +static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta, + void *priv_sta, struct ieee80211_tx_rate_control *txrc) +{ + struct ieee80211_supported_band *sband = txrc->sband; + struct sk_buff *skb = txrc->skb; + u8 low = IWL_RATE_INVALID; + u8 high = IWL_RATE_INVALID; + u16 high_low; + int index; + struct iwl3945_rs_sta *rs_sta = priv_sta; + struct iwl3945_rate_scale_data *window = NULL; + int current_tpt = IWL_INVALID_VALUE; + int low_tpt = IWL_INVALID_VALUE; + int high_tpt = IWL_INVALID_VALUE; + u32 fail_count; + s8 scale_action = 0; + unsigned long flags; + u16 rate_mask = sta ? sta->supp_rates[sband->band] : 0; + s8 max_rate_idx = -1; + struct iwl_priv *priv __maybe_unused = (struct iwl_priv *)priv_r; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + + IWL_DEBUG_RATE(priv, "enter\n"); + + /* Treat uninitialized rate scaling data same as non-existing. */ + if (rs_sta && !rs_sta->priv) { + IWL_DEBUG_RATE(priv, "Rate scaling information not initialized yet.\n"); + priv_sta = NULL; + } + + if (rate_control_send_low(sta, priv_sta, txrc)) + return; + + rate_mask = sta->supp_rates[sband->band]; + + /* get user max rate if set */ + max_rate_idx = txrc->max_rate_idx; + if ((sband->band == IEEE80211_BAND_5GHZ) && (max_rate_idx != -1)) + max_rate_idx += IWL_FIRST_OFDM_RATE; + if ((max_rate_idx < 0) || (max_rate_idx >= IWL_RATE_COUNT)) + max_rate_idx = -1; + + index = min(rs_sta->last_txrate_idx & 0xffff, IWL_RATE_COUNT_3945 - 1); + + if (sband->band == IEEE80211_BAND_5GHZ) + rate_mask = rate_mask << IWL_FIRST_OFDM_RATE; + + spin_lock_irqsave(&rs_sta->lock, flags); + + /* for recent assoc, choose best rate regarding + * to rssi value + */ + if (rs_sta->start_rate != IWL_RATE_INVALID) { + if (rs_sta->start_rate < index && + (rate_mask & (1 << rs_sta->start_rate))) + index = rs_sta->start_rate; + rs_sta->start_rate = IWL_RATE_INVALID; + } + + /* force user max rate if set by user */ + if ((max_rate_idx != -1) && (max_rate_idx < index)) { + if (rate_mask & (1 << max_rate_idx)) + index = max_rate_idx; + } + + window = &(rs_sta->win[index]); + + fail_count = window->counter - window->success_counter; + + if (((fail_count < IWL_RATE_MIN_FAILURE_TH) && + (window->success_counter < IWL_RATE_MIN_SUCCESS_TH))) { + spin_unlock_irqrestore(&rs_sta->lock, flags); + + IWL_DEBUG_RATE(priv, "Invalid average_tpt on rate %d: " + "counter: %d, success_counter: %d, " + "expected_tpt is %sNULL\n", + index, + window->counter, + window->success_counter, + rs_sta->expected_tpt ? "not " : ""); + + /* Can't calculate this yet; not enough history */ + window->average_tpt = IWL_INVALID_VALUE; + goto out; + + } + + current_tpt = window->average_tpt; + + high_low = iwl3945_get_adjacent_rate(rs_sta, index, rate_mask, + sband->band); + low = high_low & 0xff; + high = (high_low >> 8) & 0xff; + + /* If user set max rate, dont allow higher than user constrain */ + if ((max_rate_idx != -1) && (max_rate_idx < high)) + high = IWL_RATE_INVALID; + + /* Collect Measured throughputs of adjacent rates */ + if (low != IWL_RATE_INVALID) + low_tpt = rs_sta->win[low].average_tpt; + + if (high != IWL_RATE_INVALID) + high_tpt = rs_sta->win[high].average_tpt; + + spin_unlock_irqrestore(&rs_sta->lock, flags); + + scale_action = 0; + + /* Low success ratio , need to drop the rate */ + if ((window->success_ratio < IWL_RATE_DECREASE_TH) || !current_tpt) { + IWL_DEBUG_RATE(priv, "decrease rate because of low success_ratio\n"); + scale_action = -1; + /* No throughput measured yet for adjacent rates, + * try increase */ + } else if ((low_tpt == IWL_INVALID_VALUE) && + (high_tpt == IWL_INVALID_VALUE)) { + + if (high != IWL_RATE_INVALID && window->success_ratio >= IWL_RATE_INCREASE_TH) + scale_action = 1; + else if (low != IWL_RATE_INVALID) + scale_action = 0; + + /* Both adjacent throughputs are measured, but neither one has + * better throughput; we're using the best rate, don't change + * it! */ + } else if ((low_tpt != IWL_INVALID_VALUE) && + (high_tpt != IWL_INVALID_VALUE) && + (low_tpt < current_tpt) && (high_tpt < current_tpt)) { + + IWL_DEBUG_RATE(priv, "No action -- low [%d] & high [%d] < " + "current_tpt [%d]\n", + low_tpt, high_tpt, current_tpt); + scale_action = 0; + + /* At least one of the rates has better throughput */ + } else { + if (high_tpt != IWL_INVALID_VALUE) { + + /* High rate has better throughput, Increase + * rate */ + if (high_tpt > current_tpt && + window->success_ratio >= IWL_RATE_INCREASE_TH) + scale_action = 1; + else { + IWL_DEBUG_RATE(priv, + "decrease rate because of high tpt\n"); + scale_action = 0; + } + } else if (low_tpt != IWL_INVALID_VALUE) { + if (low_tpt > current_tpt) { + IWL_DEBUG_RATE(priv, + "decrease rate because of low tpt\n"); + scale_action = -1; + } else if (window->success_ratio >= IWL_RATE_INCREASE_TH) { + /* Lower rate has better + * throughput,decrease rate */ + scale_action = 1; + } + } + } + + /* Sanity check; asked for decrease, but success rate or throughput + * has been good at old rate. Don't change it. */ + if ((scale_action == -1) && (low != IWL_RATE_INVALID) && + ((window->success_ratio > IWL_RATE_HIGH_TH) || + (current_tpt > (100 * rs_sta->expected_tpt[low])))) + scale_action = 0; + + switch (scale_action) { + case -1: + + /* Decrese rate */ + if (low != IWL_RATE_INVALID) + index = low; + break; + + case 1: + /* Increase rate */ + if (high != IWL_RATE_INVALID) + index = high; + + break; + + case 0: + default: + /* No change */ + break; + } + + IWL_DEBUG_RATE(priv, "Selected %d (action %d) - low %d high %d\n", + index, scale_action, low, high); + + out: + + rs_sta->last_txrate_idx = index; + if (sband->band == IEEE80211_BAND_5GHZ) + info->control.rates[0].idx = rs_sta->last_txrate_idx - + IWL_FIRST_OFDM_RATE; + else + info->control.rates[0].idx = rs_sta->last_txrate_idx; + + IWL_DEBUG_RATE(priv, "leave: %d\n", index); +} + +#ifdef CONFIG_MAC80211_DEBUGFS +static int iwl3945_open_file_generic(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t iwl3945_sta_dbgfs_stats_table_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + char *buff; + int desc = 0; + int j; + ssize_t ret; + struct iwl3945_rs_sta *lq_sta = file->private_data; + + buff = kmalloc(1024, GFP_KERNEL); + if (!buff) + return -ENOMEM; + + desc += sprintf(buff + desc, "tx packets=%d last rate index=%d\n" + "rate=0x%X flush time %d\n", + lq_sta->tx_packets, + lq_sta->last_txrate_idx, + lq_sta->start_rate, jiffies_to_msecs(lq_sta->flush_time)); + for (j = 0; j < IWL_RATE_COUNT_3945; j++) { + desc += sprintf(buff+desc, + "counter=%d success=%d %%=%d\n", + lq_sta->win[j].counter, + lq_sta->win[j].success_counter, + lq_sta->win[j].success_ratio); + } + ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc); + kfree(buff); + return ret; +} + +static const struct file_operations rs_sta_dbgfs_stats_table_ops = { + .read = iwl3945_sta_dbgfs_stats_table_read, + .open = iwl3945_open_file_generic, + .llseek = default_llseek, +}; + +static void iwl3945_add_debugfs(void *priv, void *priv_sta, + struct dentry *dir) +{ + struct iwl3945_rs_sta *lq_sta = priv_sta; + + lq_sta->rs_sta_dbgfs_stats_table_file = + debugfs_create_file("rate_stats_table", 0600, dir, + lq_sta, &rs_sta_dbgfs_stats_table_ops); + +} + +static void iwl3945_remove_debugfs(void *priv, void *priv_sta) +{ + struct iwl3945_rs_sta *lq_sta = priv_sta; + debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file); +} +#endif + +/* + * Initialization of rate scaling information is done by driver after + * the station is added. Since mac80211 calls this function before a + * station is added we ignore it. + */ +static void rs_rate_init_stub(void *priv_r, struct ieee80211_supported_band *sband, + struct ieee80211_sta *sta, void *priv_sta) +{ +} + +static struct rate_control_ops rs_ops = { + .module = NULL, + .name = RS_NAME, + .tx_status = rs_tx_status, + .get_rate = rs_get_rate, + .rate_init = rs_rate_init_stub, + .alloc = rs_alloc, + .free = rs_free, + .alloc_sta = rs_alloc_sta, + .free_sta = rs_free_sta, +#ifdef CONFIG_MAC80211_DEBUGFS + .add_sta_debugfs = iwl3945_add_debugfs, + .remove_sta_debugfs = iwl3945_remove_debugfs, +#endif + +}; +void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id) +{ + struct iwl_priv *priv = hw->priv; + s32 rssi = 0; + unsigned long flags; + struct iwl3945_rs_sta *rs_sta; + struct ieee80211_sta *sta; + struct iwl3945_sta_priv *psta; + + IWL_DEBUG_RATE(priv, "enter\n"); + + rcu_read_lock(); + + sta = ieee80211_find_sta(priv->contexts[IWL_RXON_CTX_BSS].vif, + priv->stations[sta_id].sta.sta.addr); + if (!sta) { + IWL_DEBUG_RATE(priv, "Unable to find station to initialize rate scaling.\n"); + rcu_read_unlock(); + return; + } + + psta = (void *) sta->drv_priv; + rs_sta = &psta->rs_sta; + + spin_lock_irqsave(&rs_sta->lock, flags); + + rs_sta->tgg = 0; + switch (priv->band) { + case IEEE80211_BAND_2GHZ: + /* TODO: this always does G, not a regression */ + if (priv->contexts[IWL_RXON_CTX_BSS].active.flags & + RXON_FLG_TGG_PROTECT_MSK) { + rs_sta->tgg = 1; + rs_sta->expected_tpt = iwl3945_expected_tpt_g_prot; + } else + rs_sta->expected_tpt = iwl3945_expected_tpt_g; + break; + + case IEEE80211_BAND_5GHZ: + rs_sta->expected_tpt = iwl3945_expected_tpt_a; + break; + case IEEE80211_NUM_BANDS: + BUG(); + break; + } + + spin_unlock_irqrestore(&rs_sta->lock, flags); + + rssi = priv->_3945.last_rx_rssi; + if (rssi == 0) + rssi = IWL_MIN_RSSI_VAL; + + IWL_DEBUG_RATE(priv, "Network RSSI: %d\n", rssi); + + rs_sta->start_rate = iwl3945_get_rate_index_by_rssi(rssi, priv->band); + + IWL_DEBUG_RATE(priv, "leave: rssi %d assign rate index: " + "%d (plcp 0x%x)\n", rssi, rs_sta->start_rate, + iwl3945_rates[rs_sta->start_rate].plcp); + rcu_read_unlock(); +} + +int iwl3945_rate_control_register(void) +{ + return ieee80211_rate_control_register(&rs_ops); +} + +void iwl3945_rate_control_unregister(void) +{ + ieee80211_rate_control_unregister(&rs_ops); +} + + diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c new file mode 100644 index 000000000000..5b6932c2193a --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945.c @@ -0,0 +1,2819 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/sched.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/wireless.h> +#include <linux/firmware.h> +#include <linux/etherdevice.h> +#include <asm/unaligned.h> +#include <net/mac80211.h> + +#include "iwl-fh.h" +#include "iwl-3945-fh.h" +#include "iwl-commands.h" +#include "iwl-sta.h" +#include "iwl-3945.h" +#include "iwl-eeprom.h" +#include "iwl-core.h" +#include "iwl-helpers.h" +#include "iwl-led.h" +#include "iwl-3945-led.h" +#include "iwl-3945-debugfs.h" +#include "iwl-legacy.h" + +#define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \ + [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \ + IWL_RATE_##r##M_IEEE, \ + IWL_RATE_##ip##M_INDEX, \ + IWL_RATE_##in##M_INDEX, \ + IWL_RATE_##rp##M_INDEX, \ + IWL_RATE_##rn##M_INDEX, \ + IWL_RATE_##pp##M_INDEX, \ + IWL_RATE_##np##M_INDEX, \ + IWL_RATE_##r##M_INDEX_TABLE, \ + IWL_RATE_##ip##M_INDEX_TABLE } + +/* + * Parameter order: + * rate, prev rate, next rate, prev tgg rate, next tgg rate + * + * If there isn't a valid next or previous rate then INV is used which + * maps to IWL_RATE_INVALID + * + */ +const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = { + IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2), /* 1mbps */ + IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */ + IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */ + IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */ + IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */ + IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */ + IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */ + IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */ + IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */ + IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */ + IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */ + IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */ +}; + +static inline u8 iwl3945_get_prev_ieee_rate(u8 rate_index) +{ + u8 rate = iwl3945_rates[rate_index].prev_ieee; + + if (rate == IWL_RATE_INVALID) + rate = rate_index; + return rate; +} + +/* 1 = enable the iwl3945_disable_events() function */ +#define IWL_EVT_DISABLE (0) +#define IWL_EVT_DISABLE_SIZE (1532/32) + +/** + * iwl3945_disable_events - Disable selected events in uCode event log + * + * Disable an event by writing "1"s into "disable" + * bitmap in SRAM. Bit position corresponds to Event # (id/type). + * Default values of 0 enable uCode events to be logged. + * Use for only special debugging. This function is just a placeholder as-is, + * you'll need to provide the special bits! ... + * ... and set IWL_EVT_DISABLE to 1. */ +void iwl3945_disable_events(struct iwl_priv *priv) +{ + int i; + u32 base; /* SRAM address of event log header */ + u32 disable_ptr; /* SRAM address of event-disable bitmap array */ + u32 array_size; /* # of u32 entries in array */ + static const u32 evt_disable[IWL_EVT_DISABLE_SIZE] = { + 0x00000000, /* 31 - 0 Event id numbers */ + 0x00000000, /* 63 - 32 */ + 0x00000000, /* 95 - 64 */ + 0x00000000, /* 127 - 96 */ + 0x00000000, /* 159 - 128 */ + 0x00000000, /* 191 - 160 */ + 0x00000000, /* 223 - 192 */ + 0x00000000, /* 255 - 224 */ + 0x00000000, /* 287 - 256 */ + 0x00000000, /* 319 - 288 */ + 0x00000000, /* 351 - 320 */ + 0x00000000, /* 383 - 352 */ + 0x00000000, /* 415 - 384 */ + 0x00000000, /* 447 - 416 */ + 0x00000000, /* 479 - 448 */ + 0x00000000, /* 511 - 480 */ + 0x00000000, /* 543 - 512 */ + 0x00000000, /* 575 - 544 */ + 0x00000000, /* 607 - 576 */ + 0x00000000, /* 639 - 608 */ + 0x00000000, /* 671 - 640 */ + 0x00000000, /* 703 - 672 */ + 0x00000000, /* 735 - 704 */ + 0x00000000, /* 767 - 736 */ + 0x00000000, /* 799 - 768 */ + 0x00000000, /* 831 - 800 */ + 0x00000000, /* 863 - 832 */ + 0x00000000, /* 895 - 864 */ + 0x00000000, /* 927 - 896 */ + 0x00000000, /* 959 - 928 */ + 0x00000000, /* 991 - 960 */ + 0x00000000, /* 1023 - 992 */ + 0x00000000, /* 1055 - 1024 */ + 0x00000000, /* 1087 - 1056 */ + 0x00000000, /* 1119 - 1088 */ + 0x00000000, /* 1151 - 1120 */ + 0x00000000, /* 1183 - 1152 */ + 0x00000000, /* 1215 - 1184 */ + 0x00000000, /* 1247 - 1216 */ + 0x00000000, /* 1279 - 1248 */ + 0x00000000, /* 1311 - 1280 */ + 0x00000000, /* 1343 - 1312 */ + 0x00000000, /* 1375 - 1344 */ + 0x00000000, /* 1407 - 1376 */ + 0x00000000, /* 1439 - 1408 */ + 0x00000000, /* 1471 - 1440 */ + 0x00000000, /* 1503 - 1472 */ + }; + + base = le32_to_cpu(priv->card_alive.log_event_table_ptr); + if (!iwl3945_hw_valid_rtc_data_addr(base)) { + IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base); + return; + } + + disable_ptr = iwl_read_targ_mem(priv, base + (4 * sizeof(u32))); + array_size = iwl_read_targ_mem(priv, base + (5 * sizeof(u32))); + + if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) { + IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n", + disable_ptr); + for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++) + iwl_write_targ_mem(priv, + disable_ptr + (i * sizeof(u32)), + evt_disable[i]); + + } else { + IWL_DEBUG_INFO(priv, "Selected uCode log events may be disabled\n"); + IWL_DEBUG_INFO(priv, " by writing \"1\"s into disable bitmap\n"); + IWL_DEBUG_INFO(priv, " in SRAM at 0x%x, size %d u32s\n", + disable_ptr, array_size); + } + +} + +static int iwl3945_hwrate_to_plcp_idx(u8 plcp) +{ + int idx; + + for (idx = 0; idx < IWL_RATE_COUNT_3945; idx++) + if (iwl3945_rates[idx].plcp == plcp) + return idx; + return -1; +} + +#ifdef CONFIG_IWLWIFI_DEBUG +#define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x + +static const char *iwl3945_get_tx_fail_reason(u32 status) +{ + switch (status & TX_STATUS_MSK) { + case TX_3945_STATUS_SUCCESS: + return "SUCCESS"; + TX_STATUS_ENTRY(SHORT_LIMIT); + TX_STATUS_ENTRY(LONG_LIMIT); + TX_STATUS_ENTRY(FIFO_UNDERRUN); + TX_STATUS_ENTRY(MGMNT_ABORT); + TX_STATUS_ENTRY(NEXT_FRAG); + TX_STATUS_ENTRY(LIFE_EXPIRE); + TX_STATUS_ENTRY(DEST_PS); + TX_STATUS_ENTRY(ABORTED); + TX_STATUS_ENTRY(BT_RETRY); + TX_STATUS_ENTRY(STA_INVALID); + TX_STATUS_ENTRY(FRAG_DROPPED); + TX_STATUS_ENTRY(TID_DISABLE); + TX_STATUS_ENTRY(FRAME_FLUSHED); + TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL); + TX_STATUS_ENTRY(TX_LOCKED); + TX_STATUS_ENTRY(NO_BEACON_ON_RADAR); + } + + return "UNKNOWN"; +} +#else +static inline const char *iwl3945_get_tx_fail_reason(u32 status) +{ + return ""; +} +#endif + +/* + * get ieee prev rate from rate scale table. + * for A and B mode we need to overright prev + * value + */ +int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate) +{ + int next_rate = iwl3945_get_prev_ieee_rate(rate); + + switch (priv->band) { + case IEEE80211_BAND_5GHZ: + if (rate == IWL_RATE_12M_INDEX) + next_rate = IWL_RATE_9M_INDEX; + else if (rate == IWL_RATE_6M_INDEX) + next_rate = IWL_RATE_6M_INDEX; + break; + case IEEE80211_BAND_2GHZ: + if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) && + iwl_is_associated(priv, IWL_RXON_CTX_BSS)) { + if (rate == IWL_RATE_11M_INDEX) + next_rate = IWL_RATE_5M_INDEX; + } + break; + + default: + break; + } + + return next_rate; +} + + +/** + * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd + * + * When FW advances 'R' index, all entries between old and new 'R' index + * need to be reclaimed. As result, some free space forms. If there is + * enough free space (> low mark), wake the stack that feeds us. + */ +static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv, + int txq_id, int index) +{ + struct iwl_tx_queue *txq = &priv->txq[txq_id]; + struct iwl_queue *q = &txq->q; + struct iwl_tx_info *tx_info; + + BUG_ON(txq_id == IWL39_CMD_QUEUE_NUM); + + for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index; + q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) { + + tx_info = &txq->txb[txq->q.read_ptr]; + ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb); + tx_info->skb = NULL; + priv->cfg->ops->lib->txq_free_tfd(priv, txq); + } + + if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) && + (txq_id != IWL39_CMD_QUEUE_NUM) && + priv->mac80211_registered) + iwl_wake_queue(priv, txq); +} + +/** + * iwl3945_rx_reply_tx - Handle Tx response + */ +static void iwl3945_rx_reply_tx(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + u16 sequence = le16_to_cpu(pkt->hdr.sequence); + int txq_id = SEQ_TO_QUEUE(sequence); + int index = SEQ_TO_INDEX(sequence); + struct iwl_tx_queue *txq = &priv->txq[txq_id]; + struct ieee80211_tx_info *info; + struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; + u32 status = le32_to_cpu(tx_resp->status); + int rate_idx; + int fail; + + if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) { + IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d " + "is out of range [0-%d] %d %d\n", txq_id, + index, txq->q.n_bd, txq->q.write_ptr, + txq->q.read_ptr); + return; + } + + txq->time_stamp = jiffies; + info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb); + ieee80211_tx_info_clear_status(info); + + /* Fill the MRR chain with some info about on-chip retransmissions */ + rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate); + if (info->band == IEEE80211_BAND_5GHZ) + rate_idx -= IWL_FIRST_OFDM_RATE; + + fail = tx_resp->failure_frame; + + info->status.rates[0].idx = rate_idx; + info->status.rates[0].count = fail + 1; /* add final attempt */ + + /* tx_status->rts_retry_count = tx_resp->failure_rts; */ + info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ? + IEEE80211_TX_STAT_ACK : 0; + + IWL_DEBUG_TX(priv, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n", + txq_id, iwl3945_get_tx_fail_reason(status), status, + tx_resp->rate, tx_resp->failure_frame); + + IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index); + iwl3945_tx_queue_reclaim(priv, txq_id, index); + + if (status & TX_ABORT_REQUIRED_MSK) + IWL_ERR(priv, "TODO: Implement Tx ABORT REQUIRED!!!\n"); +} + + + +/***************************************************************************** + * + * Intel PRO/Wireless 3945ABG/BG Network Connection + * + * RX handler implementations + * + *****************************************************************************/ +#ifdef CONFIG_IWLWIFI_DEBUGFS +/* + * based on the assumption of all statistics counter are in DWORD + * FIXME: This function is for debugging, do not deal with + * the case of counters roll-over. + */ +static void iwl3945_accumulative_statistics(struct iwl_priv *priv, + __le32 *stats) +{ + int i; + __le32 *prev_stats; + u32 *accum_stats; + u32 *delta, *max_delta; + + prev_stats = (__le32 *)&priv->_3945.statistics; + accum_stats = (u32 *)&priv->_3945.accum_statistics; + delta = (u32 *)&priv->_3945.delta_statistics; + max_delta = (u32 *)&priv->_3945.max_delta; + + for (i = sizeof(__le32); i < sizeof(struct iwl3945_notif_statistics); + i += sizeof(__le32), stats++, prev_stats++, delta++, + max_delta++, accum_stats++) { + if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) { + *delta = (le32_to_cpu(*stats) - + le32_to_cpu(*prev_stats)); + *accum_stats += *delta; + if (*delta > *max_delta) + *max_delta = *delta; + } + } + + /* reset accumulative statistics for "no-counter" type statistics */ + priv->_3945.accum_statistics.general.temperature = + priv->_3945.statistics.general.temperature; + priv->_3945.accum_statistics.general.ttl_timestamp = + priv->_3945.statistics.general.ttl_timestamp; +} +#endif + +/** + * iwl3945_good_plcp_health - checks for plcp error. + * + * When the plcp error is exceeding the thresholds, reset the radio + * to improve the throughput. + */ +static bool iwl3945_good_plcp_health(struct iwl_priv *priv, + struct iwl_rx_packet *pkt) +{ + bool rc = true; + struct iwl3945_notif_statistics current_stat; + int combined_plcp_delta; + unsigned int plcp_msec; + unsigned long plcp_received_jiffies; + + if (priv->cfg->base_params->plcp_delta_threshold == + IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) { + IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n"); + return rc; + } + memcpy(¤t_stat, pkt->u.raw, sizeof(struct + iwl3945_notif_statistics)); + /* + * check for plcp_err and trigger radio reset if it exceeds + * the plcp error threshold plcp_delta. + */ + plcp_received_jiffies = jiffies; + plcp_msec = jiffies_to_msecs((long) plcp_received_jiffies - + (long) priv->plcp_jiffies); + priv->plcp_jiffies = plcp_received_jiffies; + /* + * check to make sure plcp_msec is not 0 to prevent division + * by zero. + */ + if (plcp_msec) { + combined_plcp_delta = + (le32_to_cpu(current_stat.rx.ofdm.plcp_err) - + le32_to_cpu(priv->_3945.statistics.rx.ofdm.plcp_err)); + + if ((combined_plcp_delta > 0) && + ((combined_plcp_delta * 100) / plcp_msec) > + priv->cfg->base_params->plcp_delta_threshold) { + /* + * if plcp_err exceed the threshold, the following + * data is printed in csv format: + * Text: plcp_err exceeded %d, + * Received ofdm.plcp_err, + * Current ofdm.plcp_err, + * combined_plcp_delta, + * plcp_msec + */ + IWL_DEBUG_RADIO(priv, "plcp_err exceeded %u, " + "%u, %d, %u mSecs\n", + priv->cfg->base_params->plcp_delta_threshold, + le32_to_cpu(current_stat.rx.ofdm.plcp_err), + combined_plcp_delta, plcp_msec); + /* + * Reset the RF radio due to the high plcp + * error rate + */ + rc = false; + } + } + return rc; +} + +void iwl3945_hw_rx_statistics(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + + IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n", + (int)sizeof(struct iwl3945_notif_statistics), + le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK); +#ifdef CONFIG_IWLWIFI_DEBUGFS + iwl3945_accumulative_statistics(priv, (__le32 *)&pkt->u.raw); +#endif + iwl_recover_from_statistics(priv, pkt); + + memcpy(&priv->_3945.statistics, pkt->u.raw, sizeof(priv->_3945.statistics)); +} + +void iwl3945_reply_statistics(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + __le32 *flag = (__le32 *)&pkt->u.raw; + + if (le32_to_cpu(*flag) & UCODE_STATISTICS_CLEAR_MSK) { +#ifdef CONFIG_IWLWIFI_DEBUGFS + memset(&priv->_3945.accum_statistics, 0, + sizeof(struct iwl3945_notif_statistics)); + memset(&priv->_3945.delta_statistics, 0, + sizeof(struct iwl3945_notif_statistics)); + memset(&priv->_3945.max_delta, 0, + sizeof(struct iwl3945_notif_statistics)); +#endif + IWL_DEBUG_RX(priv, "Statistics have been cleared\n"); + } + iwl3945_hw_rx_statistics(priv, rxb); +} + + +/****************************************************************************** + * + * Misc. internal state and helper functions + * + ******************************************************************************/ + +/* This is necessary only for a number of statistics, see the caller. */ +static int iwl3945_is_network_packet(struct iwl_priv *priv, + struct ieee80211_hdr *header) +{ + /* Filter incoming packets to determine if they are targeted toward + * this network, discarding packets coming from ourselves */ + switch (priv->iw_mode) { + case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source | BSSID */ + /* packets to our IBSS update information */ + return !compare_ether_addr(header->addr3, priv->bssid); + case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */ + /* packets to our IBSS update information */ + return !compare_ether_addr(header->addr2, priv->bssid); + default: + return 1; + } +} + +static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb, + struct ieee80211_rx_status *stats) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt); + struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); + struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); + u16 len = le16_to_cpu(rx_hdr->len); + struct sk_buff *skb; + __le16 fc = hdr->frame_control; + + /* We received data from the HW, so stop the watchdog */ + if (unlikely(len + IWL39_RX_FRAME_SIZE > + PAGE_SIZE << priv->hw_params.rx_page_order)) { + IWL_DEBUG_DROP(priv, "Corruption detected!\n"); + return; + } + + /* We only process data packets if the interface is open */ + if (unlikely(!priv->is_open)) { + IWL_DEBUG_DROP_LIMIT(priv, + "Dropping packet while interface is not open.\n"); + return; + } + + skb = dev_alloc_skb(128); + if (!skb) { + IWL_ERR(priv, "dev_alloc_skb failed\n"); + return; + } + + if (!iwl3945_mod_params.sw_crypto) + iwl_set_decrypted_flag(priv, + (struct ieee80211_hdr *)rxb_addr(rxb), + le32_to_cpu(rx_end->status), stats); + + skb_add_rx_frag(skb, 0, rxb->page, + (void *)rx_hdr->payload - (void *)pkt, len); + + iwl_update_stats(priv, false, fc, len); + memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); + + ieee80211_rx(priv->hw, skb); + priv->alloc_rxb_page--; + rxb->page = NULL; +} + +#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) + +static void iwl3945_rx_reply_rx(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct ieee80211_hdr *header; + struct ieee80211_rx_status rx_status; + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); + struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); + struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); + u16 rx_stats_sig_avg __maybe_unused = le16_to_cpu(rx_stats->sig_avg); + u16 rx_stats_noise_diff __maybe_unused = le16_to_cpu(rx_stats->noise_diff); + u8 network_packet; + + rx_status.flag = 0; + rx_status.mactime = le64_to_cpu(rx_end->timestamp); + rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? + IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; + rx_status.freq = + ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel), + rx_status.band); + + rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate); + if (rx_status.band == IEEE80211_BAND_5GHZ) + rx_status.rate_idx -= IWL_FIRST_OFDM_RATE; + + rx_status.antenna = (le16_to_cpu(rx_hdr->phy_flags) & + RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; + + /* set the preamble flag if appropriate */ + if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) + rx_status.flag |= RX_FLAG_SHORTPRE; + + if ((unlikely(rx_stats->phy_count > 20))) { + IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n", + rx_stats->phy_count); + return; + } + + if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR) + || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { + IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status); + return; + } + + + + /* Convert 3945's rssi indicator to dBm */ + rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET; + + IWL_DEBUG_STATS(priv, "Rssi %d sig_avg %d noise_diff %d\n", + rx_status.signal, rx_stats_sig_avg, + rx_stats_noise_diff); + + header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt); + + network_packet = iwl3945_is_network_packet(priv, header); + + IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Rate:%u\n", + network_packet ? '*' : ' ', + le16_to_cpu(rx_hdr->channel), + rx_status.signal, rx_status.signal, + rx_status.rate_idx); + + iwl_dbg_log_rx_data_frame(priv, le16_to_cpu(rx_hdr->len), header); + + if (network_packet) { + priv->_3945.last_beacon_time = + le32_to_cpu(rx_end->beacon_timestamp); + priv->_3945.last_tsf = le64_to_cpu(rx_end->timestamp); + priv->_3945.last_rx_rssi = rx_status.signal; + } + + iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status); +} + +int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, + struct iwl_tx_queue *txq, + dma_addr_t addr, u16 len, u8 reset, u8 pad) +{ + int count; + struct iwl_queue *q; + struct iwl3945_tfd *tfd, *tfd_tmp; + + q = &txq->q; + tfd_tmp = (struct iwl3945_tfd *)txq->tfds; + tfd = &tfd_tmp[q->write_ptr]; + + if (reset) + memset(tfd, 0, sizeof(*tfd)); + + count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); + + if ((count >= NUM_TFD_CHUNKS) || (count < 0)) { + IWL_ERR(priv, "Error can not send more than %d chunks\n", + NUM_TFD_CHUNKS); + return -EINVAL; + } + + tfd->tbs[count].addr = cpu_to_le32(addr); + tfd->tbs[count].len = cpu_to_le32(len); + + count++; + + tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) | + TFD_CTL_PAD_SET(pad)); + + return 0; +} + +/** + * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr] + * + * Does NOT advance any indexes + */ +void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq) +{ + struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds; + int index = txq->q.read_ptr; + struct iwl3945_tfd *tfd = &tfd_tmp[index]; + struct pci_dev *dev = priv->pci_dev; + int i; + int counter; + + /* sanity check */ + counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); + if (counter > NUM_TFD_CHUNKS) { + IWL_ERR(priv, "Too many chunks: %i\n", counter); + /* @todo issue fatal error, it is quite serious situation */ + return; + } + + /* Unmap tx_cmd */ + if (counter) + pci_unmap_single(dev, + dma_unmap_addr(&txq->meta[index], mapping), + dma_unmap_len(&txq->meta[index], len), + PCI_DMA_TODEVICE); + + /* unmap chunks if any */ + + for (i = 1; i < counter; i++) + pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr), + le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE); + + /* free SKB */ + if (txq->txb) { + struct sk_buff *skb; + + skb = txq->txb[txq->q.read_ptr].skb; + + /* can be called from irqs-disabled context */ + if (skb) { + dev_kfree_skb_any(skb); + txq->txb[txq->q.read_ptr].skb = NULL; + } + } +} + +/** + * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD: + * +*/ +void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv, + struct iwl_device_cmd *cmd, + struct ieee80211_tx_info *info, + struct ieee80211_hdr *hdr, + int sta_id, int tx_id) +{ + u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value; + u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT_3945); + u16 rate_mask; + int rate; + u8 rts_retry_limit; + u8 data_retry_limit; + __le32 tx_flags; + __le16 fc = hdr->frame_control; + struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload; + + rate = iwl3945_rates[rate_index].plcp; + tx_flags = tx_cmd->tx_flags; + + /* We need to figure out how to get the sta->supp_rates while + * in this running context */ + rate_mask = IWL_RATES_MASK_3945; + + /* Set retry limit on DATA packets and Probe Responses*/ + if (ieee80211_is_probe_resp(fc)) + data_retry_limit = 3; + else + data_retry_limit = IWL_DEFAULT_TX_RETRY; + tx_cmd->data_retry_limit = data_retry_limit; + + if (tx_id >= IWL39_CMD_QUEUE_NUM) + rts_retry_limit = 3; + else + rts_retry_limit = 7; + + if (data_retry_limit < rts_retry_limit) + rts_retry_limit = data_retry_limit; + tx_cmd->rts_retry_limit = rts_retry_limit; + + tx_cmd->rate = rate; + tx_cmd->tx_flags = tx_flags; + + /* OFDM */ + tx_cmd->supp_rates[0] = + ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF; + + /* CCK */ + tx_cmd->supp_rates[1] = (rate_mask & 0xF); + + IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X " + "cck/ofdm mask: 0x%x/0x%x\n", sta_id, + tx_cmd->rate, le32_to_cpu(tx_cmd->tx_flags), + tx_cmd->supp_rates[1], tx_cmd->supp_rates[0]); +} + +static u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate) +{ + unsigned long flags_spin; + struct iwl_station_entry *station; + + if (sta_id == IWL_INVALID_STATION) + return IWL_INVALID_STATION; + + spin_lock_irqsave(&priv->sta_lock, flags_spin); + station = &priv->stations[sta_id]; + + station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK; + station->sta.rate_n_flags = cpu_to_le16(tx_rate); + station->sta.mode = STA_CONTROL_MODIFY_MSK; + iwl_send_add_sta(priv, &station->sta, CMD_ASYNC); + spin_unlock_irqrestore(&priv->sta_lock, flags_spin); + + IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n", + sta_id, tx_rate); + return sta_id; +} + +static void iwl3945_set_pwr_vmain(struct iwl_priv *priv) +{ +/* + * (for documentation purposes) + * to set power to V_AUX, do + + if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) { + iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, + APMG_PS_CTRL_VAL_PWR_SRC_VAUX, + ~APMG_PS_CTRL_MSK_PWR_SRC); + + iwl_poll_bit(priv, CSR_GPIO_IN, + CSR_GPIO_IN_VAL_VAUX_PWR_SRC, + CSR_GPIO_IN_BIT_AUX_POWER, 5000); + } + */ + + iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, + APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, + ~APMG_PS_CTRL_MSK_PWR_SRC); + + iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC, + CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */ +} + +static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) +{ + iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->bd_dma); + iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma); + iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0); + iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), + FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE | + FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE | + FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN | + FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 | + (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) | + FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST | + (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) | + FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH); + + /* fake read to flush all prev I/O */ + iwl_read_direct32(priv, FH39_RSSR_CTRL); + + return 0; +} + +static int iwl3945_tx_reset(struct iwl_priv *priv) +{ + + /* bypass mode */ + iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2); + + /* RA 0 is active */ + iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01); + + /* all 6 fifo are active */ + iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f); + + iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000); + iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002); + iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004); + iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005); + + iwl_write_direct32(priv, FH39_TSSR_CBB_BASE, + priv->_3945.shared_phys); + + iwl_write_direct32(priv, FH39_TSSR_MSG_CONFIG, + FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON | + FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON | + FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B | + FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON | + FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON | + FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH | + FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH); + + + return 0; +} + +/** + * iwl3945_txq_ctx_reset - Reset TX queue context + * + * Destroys all DMA structures and initialize them again + */ +static int iwl3945_txq_ctx_reset(struct iwl_priv *priv) +{ + int rc; + int txq_id, slots_num; + + iwl3945_hw_txq_ctx_free(priv); + + /* allocate tx queue structure */ + rc = iwl_alloc_txq_mem(priv); + if (rc) + return rc; + + /* Tx CMD queue */ + rc = iwl3945_tx_reset(priv); + if (rc) + goto error; + + /* Tx queue(s) */ + for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) { + slots_num = (txq_id == IWL39_CMD_QUEUE_NUM) ? + TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; + rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num, + txq_id); + if (rc) { + IWL_ERR(priv, "Tx %d queue init failed\n", txq_id); + goto error; + } + } + + return rc; + + error: + iwl3945_hw_txq_ctx_free(priv); + return rc; +} + + +/* + * Start up 3945's basic functionality after it has been reset + * (e.g. after platform boot, or shutdown via iwl_apm_stop()) + * NOTE: This does not load uCode nor start the embedded processor + */ +static int iwl3945_apm_init(struct iwl_priv *priv) +{ + int ret = iwl_apm_init(priv); + + /* Clear APMG (NIC's internal power management) interrupts */ + iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0); + iwl_write_prph(priv, APMG_RTC_INT_STT_REG, 0xFFFFFFFF); + + /* Reset radio chip */ + iwl_set_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); + udelay(5); + iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); + + return ret; +} + +static void iwl3945_nic_config(struct iwl_priv *priv) +{ + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + unsigned long flags; + u8 rev_id = 0; + + spin_lock_irqsave(&priv->lock, flags); + + /* Determine HW type */ + pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id); + + IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id); + + if (rev_id & PCI_CFG_REV_ID_BIT_RTP) + IWL_DEBUG_INFO(priv, "RTP type\n"); + else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) { + IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n"); + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR39_HW_IF_CONFIG_REG_BIT_3945_MB); + } else { + IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n"); + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR39_HW_IF_CONFIG_REG_BIT_3945_MM); + } + + if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) { + IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n"); + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC); + } else + IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n"); + + if ((eeprom->board_revision & 0xF0) == 0xD0) { + IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n", + eeprom->board_revision); + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); + } else { + IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n", + eeprom->board_revision); + iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); + } + + if (eeprom->almgor_m_version <= 1) { + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A); + IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n", + eeprom->almgor_m_version); + } else { + IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n", + eeprom->almgor_m_version); + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B); + } + spin_unlock_irqrestore(&priv->lock, flags); + + if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE) + IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n"); + + if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE) + IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n"); +} + +int iwl3945_hw_nic_init(struct iwl_priv *priv) +{ + int rc; + unsigned long flags; + struct iwl_rx_queue *rxq = &priv->rxq; + + spin_lock_irqsave(&priv->lock, flags); + priv->cfg->ops->lib->apm_ops.init(priv); + spin_unlock_irqrestore(&priv->lock, flags); + + iwl3945_set_pwr_vmain(priv); + + priv->cfg->ops->lib->apm_ops.config(priv); + + /* Allocate the RX queue, or reset if it is already allocated */ + if (!rxq->bd) { + rc = iwl_rx_queue_alloc(priv); + if (rc) { + IWL_ERR(priv, "Unable to initialize Rx queue\n"); + return -ENOMEM; + } + } else + iwl3945_rx_queue_reset(priv, rxq); + + iwl3945_rx_replenish(priv); + + iwl3945_rx_init(priv, rxq); + + + /* Look at using this instead: + rxq->need_update = 1; + iwl_rx_queue_update_write_ptr(priv, rxq); + */ + + iwl_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7); + + rc = iwl3945_txq_ctx_reset(priv); + if (rc) + return rc; + + set_bit(STATUS_INIT, &priv->status); + + return 0; +} + +/** + * iwl3945_hw_txq_ctx_free - Free TXQ Context + * + * Destroy all TX DMA queues and structures + */ +void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv) +{ + int txq_id; + + /* Tx queues */ + if (priv->txq) + for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; + txq_id++) + if (txq_id == IWL39_CMD_QUEUE_NUM) + iwl_cmd_queue_free(priv); + else + iwl_tx_queue_free(priv, txq_id); + + /* free tx queue structure */ + iwl_free_txq_mem(priv); +} + +void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv) +{ + int txq_id; + + /* stop SCD */ + iwl_write_prph(priv, ALM_SCD_MODE_REG, 0); + iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0); + + /* reset TFD queues */ + for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) { + iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0); + iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS, + FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id), + 1000); + } + + iwl3945_hw_txq_ctx_free(priv); +} + +/** + * iwl3945_hw_reg_adjust_power_by_temp + * return index delta into power gain settings table +*/ +static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading) +{ + return (new_reading - old_reading) * (-11) / 100; +} + +/** + * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range + */ +static inline int iwl3945_hw_reg_temp_out_of_range(int temperature) +{ + return ((temperature < -260) || (temperature > 25)) ? 1 : 0; +} + +int iwl3945_hw_get_temperature(struct iwl_priv *priv) +{ + return iwl_read32(priv, CSR_UCODE_DRV_GP2); +} + +/** + * iwl3945_hw_reg_txpower_get_temperature + * get the current temperature by reading from NIC +*/ +static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv) +{ + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + int temperature; + + temperature = iwl3945_hw_get_temperature(priv); + + /* driver's okay range is -260 to +25. + * human readable okay range is 0 to +285 */ + IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT); + + /* handle insane temp reading */ + if (iwl3945_hw_reg_temp_out_of_range(temperature)) { + IWL_ERR(priv, "Error bad temperature value %d\n", temperature); + + /* if really really hot(?), + * substitute the 3rd band/group's temp measured at factory */ + if (priv->last_temperature > 100) + temperature = eeprom->groups[2].temperature; + else /* else use most recent "sane" value from driver */ + temperature = priv->last_temperature; + } + + return temperature; /* raw, not "human readable" */ +} + +/* Adjust Txpower only if temperature variance is greater than threshold. + * + * Both are lower than older versions' 9 degrees */ +#define IWL_TEMPERATURE_LIMIT_TIMER 6 + +/** + * is_temp_calib_needed - determines if new calibration is needed + * + * records new temperature in tx_mgr->temperature. + * replaces tx_mgr->last_temperature *only* if calib needed + * (assumes caller will actually do the calibration!). */ +static int is_temp_calib_needed(struct iwl_priv *priv) +{ + int temp_diff; + + priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv); + temp_diff = priv->temperature - priv->last_temperature; + + /* get absolute value */ + if (temp_diff < 0) { + IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff); + temp_diff = -temp_diff; + } else if (temp_diff == 0) + IWL_DEBUG_POWER(priv, "Same temp,\n"); + else + IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff); + + /* if we don't need calibration, *don't* update last_temperature */ + if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) { + IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n"); + return 0; + } + + IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n"); + + /* assume that caller will actually do calib ... + * update the "last temperature" value */ + priv->last_temperature = priv->temperature; + return 1; +} + +#define IWL_MAX_GAIN_ENTRIES 78 +#define IWL_CCK_FROM_OFDM_POWER_DIFF -5 +#define IWL_CCK_FROM_OFDM_INDEX_DIFF (10) + +/* radio and DSP power table, each step is 1/2 dB. + * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */ +static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = { + { + {251, 127}, /* 2.4 GHz, highest power */ + {251, 127}, + {251, 127}, + {251, 127}, + {251, 125}, + {251, 110}, + {251, 105}, + {251, 98}, + {187, 125}, + {187, 115}, + {187, 108}, + {187, 99}, + {243, 119}, + {243, 111}, + {243, 105}, + {243, 97}, + {243, 92}, + {211, 106}, + {211, 100}, + {179, 120}, + {179, 113}, + {179, 107}, + {147, 125}, + {147, 119}, + {147, 112}, + {147, 106}, + {147, 101}, + {147, 97}, + {147, 91}, + {115, 107}, + {235, 121}, + {235, 115}, + {235, 109}, + {203, 127}, + {203, 121}, + {203, 115}, + {203, 108}, + {203, 102}, + {203, 96}, + {203, 92}, + {171, 110}, + {171, 104}, + {171, 98}, + {139, 116}, + {227, 125}, + {227, 119}, + {227, 113}, + {227, 107}, + {227, 101}, + {227, 96}, + {195, 113}, + {195, 106}, + {195, 102}, + {195, 95}, + {163, 113}, + {163, 106}, + {163, 102}, + {163, 95}, + {131, 113}, + {131, 106}, + {131, 102}, + {131, 95}, + {99, 113}, + {99, 106}, + {99, 102}, + {99, 95}, + {67, 113}, + {67, 106}, + {67, 102}, + {67, 95}, + {35, 113}, + {35, 106}, + {35, 102}, + {35, 95}, + {3, 113}, + {3, 106}, + {3, 102}, + {3, 95} }, /* 2.4 GHz, lowest power */ + { + {251, 127}, /* 5.x GHz, highest power */ + {251, 120}, + {251, 114}, + {219, 119}, + {219, 101}, + {187, 113}, + {187, 102}, + {155, 114}, + {155, 103}, + {123, 117}, + {123, 107}, + {123, 99}, + {123, 92}, + {91, 108}, + {59, 125}, + {59, 118}, + {59, 109}, + {59, 102}, + {59, 96}, + {59, 90}, + {27, 104}, + {27, 98}, + {27, 92}, + {115, 118}, + {115, 111}, + {115, 104}, + {83, 126}, + {83, 121}, + {83, 113}, + {83, 105}, + {83, 99}, + {51, 118}, + {51, 111}, + {51, 104}, + {51, 98}, + {19, 116}, + {19, 109}, + {19, 102}, + {19, 98}, + {19, 93}, + {171, 113}, + {171, 107}, + {171, 99}, + {139, 120}, + {139, 113}, + {139, 107}, + {139, 99}, + {107, 120}, + {107, 113}, + {107, 107}, + {107, 99}, + {75, 120}, + {75, 113}, + {75, 107}, + {75, 99}, + {43, 120}, + {43, 113}, + {43, 107}, + {43, 99}, + {11, 120}, + {11, 113}, + {11, 107}, + {11, 99}, + {131, 107}, + {131, 99}, + {99, 120}, + {99, 113}, + {99, 107}, + {99, 99}, + {67, 120}, + {67, 113}, + {67, 107}, + {67, 99}, + {35, 120}, + {35, 113}, + {35, 107}, + {35, 99}, + {3, 120} } /* 5.x GHz, lowest power */ +}; + +static inline u8 iwl3945_hw_reg_fix_power_index(int index) +{ + if (index < 0) + return 0; + if (index >= IWL_MAX_GAIN_ENTRIES) + return IWL_MAX_GAIN_ENTRIES - 1; + return (u8) index; +} + +/* Kick off thermal recalibration check every 60 seconds */ +#define REG_RECALIB_PERIOD (60) + +/** + * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests + * + * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK) + * or 6 Mbit (OFDM) rates. + */ +static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index, + s32 rate_index, const s8 *clip_pwrs, + struct iwl_channel_info *ch_info, + int band_index) +{ + struct iwl3945_scan_power_info *scan_power_info; + s8 power; + u8 power_index; + + scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index]; + + /* use this channel group's 6Mbit clipping/saturation pwr, + * but cap at regulatory scan power restriction (set during init + * based on eeprom channel data) for this channel. */ + power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]); + + /* further limit to user's max power preference. + * FIXME: Other spectrum management power limitations do not + * seem to apply?? */ + power = min(power, priv->tx_power_user_lmt); + scan_power_info->requested_power = power; + + /* find difference between new scan *power* and current "normal" + * Tx *power* for 6Mb. Use this difference (x2) to adjust the + * current "normal" temperature-compensated Tx power *index* for + * this rate (1Mb or 6Mb) to yield new temp-compensated scan power + * *index*. */ + power_index = ch_info->power_info[rate_index].power_table_index + - (power - ch_info->power_info + [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2; + + /* store reference index that we use when adjusting *all* scan + * powers. So we can accommodate user (all channel) or spectrum + * management (single channel) power changes "between" temperature + * feedback compensation procedures. + * don't force fit this reference index into gain table; it may be a + * negative number. This will help avoid errors when we're at + * the lower bounds (highest gains, for warmest temperatures) + * of the table. */ + + /* don't exceed table bounds for "real" setting */ + power_index = iwl3945_hw_reg_fix_power_index(power_index); + + scan_power_info->power_table_index = power_index; + scan_power_info->tpc.tx_gain = + power_gain_table[band_index][power_index].tx_gain; + scan_power_info->tpc.dsp_atten = + power_gain_table[band_index][power_index].dsp_atten; +} + +/** + * iwl3945_send_tx_power - fill in Tx Power command with gain settings + * + * Configures power settings for all rates for the current channel, + * using values from channel info struct, and send to NIC + */ +static int iwl3945_send_tx_power(struct iwl_priv *priv) +{ + int rate_idx, i; + const struct iwl_channel_info *ch_info = NULL; + struct iwl3945_txpowertable_cmd txpower = { + .channel = priv->contexts[IWL_RXON_CTX_BSS].active.channel, + }; + u16 chan; + + if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status), + "TX Power requested while scanning!\n")) + return -EAGAIN; + + chan = le16_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.channel); + + txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1; + ch_info = iwl_get_channel_info(priv, priv->band, chan); + if (!ch_info) { + IWL_ERR(priv, + "Failed to get channel info for channel %d [%d]\n", + chan, priv->band); + return -EINVAL; + } + + if (!is_channel_valid(ch_info)) { + IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on " + "non-Tx channel.\n"); + return 0; + } + + /* fill cmd with power settings for all rates for current channel */ + /* Fill OFDM rate */ + for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0; + rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) { + + txpower.power[i].tpc = ch_info->power_info[i].tpc; + txpower.power[i].rate = iwl3945_rates[rate_idx].plcp; + + IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n", + le16_to_cpu(txpower.channel), + txpower.band, + txpower.power[i].tpc.tx_gain, + txpower.power[i].tpc.dsp_atten, + txpower.power[i].rate); + } + /* Fill CCK rates */ + for (rate_idx = IWL_FIRST_CCK_RATE; + rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) { + txpower.power[i].tpc = ch_info->power_info[i].tpc; + txpower.power[i].rate = iwl3945_rates[rate_idx].plcp; + + IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n", + le16_to_cpu(txpower.channel), + txpower.band, + txpower.power[i].tpc.tx_gain, + txpower.power[i].tpc.dsp_atten, + txpower.power[i].rate); + } + + return iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, + sizeof(struct iwl3945_txpowertable_cmd), + &txpower); + +} + +/** + * iwl3945_hw_reg_set_new_power - Configures power tables at new levels + * @ch_info: Channel to update. Uses power_info.requested_power. + * + * Replace requested_power and base_power_index ch_info fields for + * one channel. + * + * Called if user or spectrum management changes power preferences. + * Takes into account h/w and modulation limitations (clip power). + * + * This does *not* send anything to NIC, just sets up ch_info for one channel. + * + * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to + * properly fill out the scan powers, and actual h/w gain settings, + * and send changes to NIC + */ +static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv, + struct iwl_channel_info *ch_info) +{ + struct iwl3945_channel_power_info *power_info; + int power_changed = 0; + int i; + const s8 *clip_pwrs; + int power; + + /* Get this chnlgrp's rate-to-max/clip-powers table */ + clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers; + + /* Get this channel's rate-to-current-power settings table */ + power_info = ch_info->power_info; + + /* update OFDM Txpower settings */ + for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE; + i++, ++power_info) { + int delta_idx; + + /* limit new power to be no more than h/w capability */ + power = min(ch_info->curr_txpow, clip_pwrs[i]); + if (power == power_info->requested_power) + continue; + + /* find difference between old and new requested powers, + * update base (non-temp-compensated) power index */ + delta_idx = (power - power_info->requested_power) * 2; + power_info->base_power_index -= delta_idx; + + /* save new requested power value */ + power_info->requested_power = power; + + power_changed = 1; + } + + /* update CCK Txpower settings, based on OFDM 12M setting ... + * ... all CCK power settings for a given channel are the *same*. */ + if (power_changed) { + power = + ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]. + requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF; + + /* do all CCK rates' iwl3945_channel_power_info structures */ + for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) { + power_info->requested_power = power; + power_info->base_power_index = + ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]. + base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF; + ++power_info; + } + } + + return 0; +} + +/** + * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel + * + * NOTE: Returned power limit may be less (but not more) than requested, + * based strictly on regulatory (eeprom and spectrum mgt) limitations + * (no consideration for h/w clipping limitations). + */ +static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info) +{ + s8 max_power; + +#if 0 + /* if we're using TGd limits, use lower of TGd or EEPROM */ + if (ch_info->tgd_data.max_power != 0) + max_power = min(ch_info->tgd_data.max_power, + ch_info->eeprom.max_power_avg); + + /* else just use EEPROM limits */ + else +#endif + max_power = ch_info->eeprom.max_power_avg; + + return min(max_power, ch_info->max_power_avg); +} + +/** + * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature + * + * Compensate txpower settings of *all* channels for temperature. + * This only accounts for the difference between current temperature + * and the factory calibration temperatures, and bases the new settings + * on the channel's base_power_index. + * + * If RxOn is "associated", this sends the new Txpower to NIC! + */ +static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv) +{ + struct iwl_channel_info *ch_info = NULL; + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + int delta_index; + const s8 *clip_pwrs; /* array of h/w max power levels for each rate */ + u8 a_band; + u8 rate_index; + u8 scan_tbl_index; + u8 i; + int ref_temp; + int temperature = priv->temperature; + + if (priv->disable_tx_power_cal || + test_bit(STATUS_SCANNING, &priv->status)) { + /* do not perform tx power calibration */ + return 0; + } + /* set up new Tx power info for each and every channel, 2.4 and 5.x */ + for (i = 0; i < priv->channel_count; i++) { + ch_info = &priv->channel_info[i]; + a_band = is_channel_a_band(ch_info); + + /* Get this chnlgrp's factory calibration temperature */ + ref_temp = (s16)eeprom->groups[ch_info->group_index]. + temperature; + + /* get power index adjustment based on current and factory + * temps */ + delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature, + ref_temp); + + /* set tx power value for all rates, OFDM and CCK */ + for (rate_index = 0; rate_index < IWL_RATE_COUNT_3945; + rate_index++) { + int power_idx = + ch_info->power_info[rate_index].base_power_index; + + /* temperature compensate */ + power_idx += delta_index; + + /* stay within table range */ + power_idx = iwl3945_hw_reg_fix_power_index(power_idx); + ch_info->power_info[rate_index]. + power_table_index = (u8) power_idx; + ch_info->power_info[rate_index].tpc = + power_gain_table[a_band][power_idx]; + } + + /* Get this chnlgrp's rate-to-max/clip-powers table */ + clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers; + + /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ + for (scan_tbl_index = 0; + scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) { + s32 actual_index = (scan_tbl_index == 0) ? + IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE; + iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index, + actual_index, clip_pwrs, + ch_info, a_band); + } + } + + /* send Txpower command for current channel to ucode */ + return priv->cfg->ops->lib->send_tx_power(priv); +} + +int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power) +{ + struct iwl_channel_info *ch_info; + s8 max_power; + u8 a_band; + u8 i; + + if (priv->tx_power_user_lmt == power) { + IWL_DEBUG_POWER(priv, "Requested Tx power same as current " + "limit: %ddBm.\n", power); + return 0; + } + + IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power); + priv->tx_power_user_lmt = power; + + /* set up new Tx powers for each and every channel, 2.4 and 5.x */ + + for (i = 0; i < priv->channel_count; i++) { + ch_info = &priv->channel_info[i]; + a_band = is_channel_a_band(ch_info); + + /* find minimum power of all user and regulatory constraints + * (does not consider h/w clipping limitations) */ + max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info); + max_power = min(power, max_power); + if (max_power != ch_info->curr_txpow) { + ch_info->curr_txpow = max_power; + + /* this considers the h/w clipping limitations */ + iwl3945_hw_reg_set_new_power(priv, ch_info); + } + } + + /* update txpower settings for all channels, + * send to NIC if associated. */ + is_temp_calib_needed(priv); + iwl3945_hw_reg_comp_txpower_temp(priv); + + return 0; +} + +static int iwl3945_send_rxon_assoc(struct iwl_priv *priv, + struct iwl_rxon_context *ctx) +{ + int rc = 0; + struct iwl_rx_packet *pkt; + struct iwl3945_rxon_assoc_cmd rxon_assoc; + struct iwl_host_cmd cmd = { + .id = REPLY_RXON_ASSOC, + .len = sizeof(rxon_assoc), + .flags = CMD_WANT_SKB, + .data = &rxon_assoc, + }; + const struct iwl_rxon_cmd *rxon1 = &ctx->staging; + const struct iwl_rxon_cmd *rxon2 = &ctx->active; + + if ((rxon1->flags == rxon2->flags) && + (rxon1->filter_flags == rxon2->filter_flags) && + (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && + (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { + IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); + return 0; + } + + rxon_assoc.flags = ctx->staging.flags; + rxon_assoc.filter_flags = ctx->staging.filter_flags; + rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates; + rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates; + rxon_assoc.reserved = 0; + + rc = iwl_send_cmd_sync(priv, &cmd); + if (rc) + return rc; + + pkt = (struct iwl_rx_packet *)cmd.reply_page; + if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { + IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n"); + rc = -EIO; + } + + iwl_free_pages(priv, cmd.reply_page); + + return rc; +} + +/** + * iwl3945_commit_rxon - commit staging_rxon to hardware + * + * The RXON command in staging_rxon is committed to the hardware and + * the active_rxon structure is updated with the new data. This + * function correctly transitions out of the RXON_ASSOC_MSK state if + * a HW tune is required based on the RXON structure changes. + */ +int iwl3945_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx) +{ + /* cast away the const for active_rxon in this function */ + struct iwl3945_rxon_cmd *active_rxon = (void *)&ctx->active; + struct iwl3945_rxon_cmd *staging_rxon = (void *)&ctx->staging; + int rc = 0; + bool new_assoc = !!(staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return -EINVAL; + + if (!iwl_is_alive(priv)) + return -1; + + /* always get timestamp with Rx frame */ + staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK; + + /* select antenna */ + staging_rxon->flags &= + ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK); + staging_rxon->flags |= iwl3945_get_antenna_flags(priv); + + rc = iwl_check_rxon_cmd(priv, ctx); + if (rc) { + IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); + return -EINVAL; + } + + /* If we don't need to send a full RXON, we can use + * iwl3945_rxon_assoc_cmd which is used to reconfigure filter + * and other flags for the current radio configuration. */ + if (!iwl_full_rxon_required(priv, &priv->contexts[IWL_RXON_CTX_BSS])) { + rc = iwl_send_rxon_assoc(priv, + &priv->contexts[IWL_RXON_CTX_BSS]); + if (rc) { + IWL_ERR(priv, "Error setting RXON_ASSOC " + "configuration (%d).\n", rc); + return rc; + } + + memcpy(active_rxon, staging_rxon, sizeof(*active_rxon)); + + return 0; + } + + /* If we are currently associated and the new config requires + * an RXON_ASSOC and the new config wants the associated mask enabled, + * we must clear the associated from the active configuration + * before we apply the new config */ + if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && new_assoc) { + IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n"); + active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; + + /* + * reserved4 and 5 could have been filled by the iwlcore code. + * Let's clear them before pushing to the 3945. + */ + active_rxon->reserved4 = 0; + active_rxon->reserved5 = 0; + rc = iwl_send_cmd_pdu(priv, REPLY_RXON, + sizeof(struct iwl3945_rxon_cmd), + &priv->contexts[IWL_RXON_CTX_BSS].active); + + /* If the mask clearing failed then we set + * active_rxon back to what it was previously */ + if (rc) { + active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; + IWL_ERR(priv, "Error clearing ASSOC_MSK on current " + "configuration (%d).\n", rc); + return rc; + } + iwl_clear_ucode_stations(priv, + &priv->contexts[IWL_RXON_CTX_BSS]); + iwl_restore_stations(priv, &priv->contexts[IWL_RXON_CTX_BSS]); + } + + IWL_DEBUG_INFO(priv, "Sending RXON\n" + "* with%s RXON_FILTER_ASSOC_MSK\n" + "* channel = %d\n" + "* bssid = %pM\n", + (new_assoc ? "" : "out"), + le16_to_cpu(staging_rxon->channel), + staging_rxon->bssid_addr); + + /* + * reserved4 and 5 could have been filled by the iwlcore code. + * Let's clear them before pushing to the 3945. + */ + staging_rxon->reserved4 = 0; + staging_rxon->reserved5 = 0; + + iwl_set_rxon_hwcrypto(priv, ctx, !iwl3945_mod_params.sw_crypto); + + /* Apply the new configuration */ + rc = iwl_send_cmd_pdu(priv, REPLY_RXON, + sizeof(struct iwl3945_rxon_cmd), + staging_rxon); + if (rc) { + IWL_ERR(priv, "Error setting new configuration (%d).\n", rc); + return rc; + } + + memcpy(active_rxon, staging_rxon, sizeof(*active_rxon)); + + if (!new_assoc) { + iwl_clear_ucode_stations(priv, + &priv->contexts[IWL_RXON_CTX_BSS]); + iwl_restore_stations(priv, &priv->contexts[IWL_RXON_CTX_BSS]); + } + + /* If we issue a new RXON command which required a tune then we must + * send a new TXPOWER command or we won't be able to Tx any frames */ + rc = iwl_set_tx_power(priv, priv->tx_power_next, true); + if (rc) { + IWL_ERR(priv, "Error setting Tx power (%d).\n", rc); + return rc; + } + + /* Init the hardware's rate fallback order based on the band */ + rc = iwl3945_init_hw_rate_table(priv); + if (rc) { + IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc); + return -EIO; + } + + return 0; +} + +/** + * iwl3945_reg_txpower_periodic - called when time to check our temperature. + * + * -- reset periodic timer + * -- see if temp has changed enough to warrant re-calibration ... if so: + * -- correct coeffs for temp (can reset temp timer) + * -- save this temp as "last", + * -- send new set of gain settings to NIC + * NOTE: This should continue working, even when we're not associated, + * so we can keep our internal table of scan powers current. */ +void iwl3945_reg_txpower_periodic(struct iwl_priv *priv) +{ + /* This will kick in the "brute force" + * iwl3945_hw_reg_comp_txpower_temp() below */ + if (!is_temp_calib_needed(priv)) + goto reschedule; + + /* Set up a new set of temp-adjusted TxPowers, send to NIC. + * This is based *only* on current temperature, + * ignoring any previous power measurements */ + iwl3945_hw_reg_comp_txpower_temp(priv); + + reschedule: + queue_delayed_work(priv->workqueue, + &priv->_3945.thermal_periodic, REG_RECALIB_PERIOD * HZ); +} + +static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work) +{ + struct iwl_priv *priv = container_of(work, struct iwl_priv, + _3945.thermal_periodic.work); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + mutex_lock(&priv->mutex); + iwl3945_reg_txpower_periodic(priv); + mutex_unlock(&priv->mutex); +} + +/** + * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4) + * for the channel. + * + * This function is used when initializing channel-info structs. + * + * NOTE: These channel groups do *NOT* match the bands above! + * These channel groups are based on factory-tested channels; + * on A-band, EEPROM's "group frequency" entries represent the top + * channel in each group 1-4. Group 5 All B/G channels are in group 0. + */ +static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv, + const struct iwl_channel_info *ch_info) +{ + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0]; + u8 group; + u16 group_index = 0; /* based on factory calib frequencies */ + u8 grp_channel; + + /* Find the group index for the channel ... don't use index 1(?) */ + if (is_channel_a_band(ch_info)) { + for (group = 1; group < 5; group++) { + grp_channel = ch_grp[group].group_channel; + if (ch_info->channel <= grp_channel) { + group_index = group; + break; + } + } + /* group 4 has a few channels *above* its factory cal freq */ + if (group == 5) + group_index = 4; + } else + group_index = 0; /* 2.4 GHz, group 0 */ + + IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel, + group_index); + return group_index; +} + +/** + * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index + * + * Interpolate to get nominal (i.e. at factory calibration temperature) index + * into radio/DSP gain settings table for requested power. + */ +static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv, + s8 requested_power, + s32 setting_index, s32 *new_index) +{ + const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL; + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + s32 index0, index1; + s32 power = 2 * requested_power; + s32 i; + const struct iwl3945_eeprom_txpower_sample *samples; + s32 gains0, gains1; + s32 res; + s32 denominator; + + chnl_grp = &eeprom->groups[setting_index]; + samples = chnl_grp->samples; + for (i = 0; i < 5; i++) { + if (power == samples[i].power) { + *new_index = samples[i].gain_index; + return 0; + } + } + + if (power > samples[1].power) { + index0 = 0; + index1 = 1; + } else if (power > samples[2].power) { + index0 = 1; + index1 = 2; + } else if (power > samples[3].power) { + index0 = 2; + index1 = 3; + } else { + index0 = 3; + index1 = 4; + } + + denominator = (s32) samples[index1].power - (s32) samples[index0].power; + if (denominator == 0) + return -EINVAL; + gains0 = (s32) samples[index0].gain_index * (1 << 19); + gains1 = (s32) samples[index1].gain_index * (1 << 19); + res = gains0 + (gains1 - gains0) * + ((s32) power - (s32) samples[index0].power) / denominator + + (1 << 18); + *new_index = res >> 19; + return 0; +} + +static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv) +{ + u32 i; + s32 rate_index; + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + const struct iwl3945_eeprom_txpower_group *group; + + IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n"); + + for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) { + s8 *clip_pwrs; /* table of power levels for each rate */ + s8 satur_pwr; /* saturation power for each chnl group */ + group = &eeprom->groups[i]; + + /* sanity check on factory saturation power value */ + if (group->saturation_power < 40) { + IWL_WARN(priv, "Error: saturation power is %d, " + "less than minimum expected 40\n", + group->saturation_power); + return; + } + + /* + * Derive requested power levels for each rate, based on + * hardware capabilities (saturation power for band). + * Basic value is 3dB down from saturation, with further + * power reductions for highest 3 data rates. These + * backoffs provide headroom for high rate modulation + * power peaks, without too much distortion (clipping). + */ + /* we'll fill in this array with h/w max power levels */ + clip_pwrs = (s8 *) priv->_3945.clip_groups[i].clip_powers; + + /* divide factory saturation power by 2 to find -3dB level */ + satur_pwr = (s8) (group->saturation_power >> 1); + + /* fill in channel group's nominal powers for each rate */ + for (rate_index = 0; + rate_index < IWL_RATE_COUNT_3945; rate_index++, clip_pwrs++) { + switch (rate_index) { + case IWL_RATE_36M_INDEX_TABLE: + if (i == 0) /* B/G */ + *clip_pwrs = satur_pwr; + else /* A */ + *clip_pwrs = satur_pwr - 5; + break; + case IWL_RATE_48M_INDEX_TABLE: + if (i == 0) + *clip_pwrs = satur_pwr - 7; + else + *clip_pwrs = satur_pwr - 10; + break; + case IWL_RATE_54M_INDEX_TABLE: + if (i == 0) + *clip_pwrs = satur_pwr - 9; + else + *clip_pwrs = satur_pwr - 12; + break; + default: + *clip_pwrs = satur_pwr; + break; + } + } + } +} + +/** + * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM + * + * Second pass (during init) to set up priv->channel_info + * + * Set up Tx-power settings in our channel info database for each VALID + * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values + * and current temperature. + * + * Since this is based on current temperature (at init time), these values may + * not be valid for very long, but it gives us a starting/default point, + * and allows us to active (i.e. using Tx) scan. + * + * This does *not* write values to NIC, just sets up our internal table. + */ +int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv) +{ + struct iwl_channel_info *ch_info = NULL; + struct iwl3945_channel_power_info *pwr_info; + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + int delta_index; + u8 rate_index; + u8 scan_tbl_index; + const s8 *clip_pwrs; /* array of power levels for each rate */ + u8 gain, dsp_atten; + s8 power; + u8 pwr_index, base_pwr_index, a_band; + u8 i; + int temperature; + + /* save temperature reference, + * so we can determine next time to calibrate */ + temperature = iwl3945_hw_reg_txpower_get_temperature(priv); + priv->last_temperature = temperature; + + iwl3945_hw_reg_init_channel_groups(priv); + + /* initialize Tx power info for each and every channel, 2.4 and 5.x */ + for (i = 0, ch_info = priv->channel_info; i < priv->channel_count; + i++, ch_info++) { + a_band = is_channel_a_band(ch_info); + if (!is_channel_valid(ch_info)) + continue; + + /* find this channel's channel group (*not* "band") index */ + ch_info->group_index = + iwl3945_hw_reg_get_ch_grp_index(priv, ch_info); + + /* Get this chnlgrp's rate->max/clip-powers table */ + clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers; + + /* calculate power index *adjustment* value according to + * diff between current temperature and factory temperature */ + delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature, + eeprom->groups[ch_info->group_index]. + temperature); + + IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n", + ch_info->channel, delta_index, temperature + + IWL_TEMP_CONVERT); + + /* set tx power value for all OFDM rates */ + for (rate_index = 0; rate_index < IWL_OFDM_RATES; + rate_index++) { + s32 uninitialized_var(power_idx); + int rc; + + /* use channel group's clip-power table, + * but don't exceed channel's max power */ + s8 pwr = min(ch_info->max_power_avg, + clip_pwrs[rate_index]); + + pwr_info = &ch_info->power_info[rate_index]; + + /* get base (i.e. at factory-measured temperature) + * power table index for this rate's power */ + rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr, + ch_info->group_index, + &power_idx); + if (rc) { + IWL_ERR(priv, "Invalid power index\n"); + return rc; + } + pwr_info->base_power_index = (u8) power_idx; + + /* temperature compensate */ + power_idx += delta_index; + + /* stay within range of gain table */ + power_idx = iwl3945_hw_reg_fix_power_index(power_idx); + + /* fill 1 OFDM rate's iwl3945_channel_power_info struct */ + pwr_info->requested_power = pwr; + pwr_info->power_table_index = (u8) power_idx; + pwr_info->tpc.tx_gain = + power_gain_table[a_band][power_idx].tx_gain; + pwr_info->tpc.dsp_atten = + power_gain_table[a_band][power_idx].dsp_atten; + } + + /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/ + pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]; + power = pwr_info->requested_power + + IWL_CCK_FROM_OFDM_POWER_DIFF; + pwr_index = pwr_info->power_table_index + + IWL_CCK_FROM_OFDM_INDEX_DIFF; + base_pwr_index = pwr_info->base_power_index + + IWL_CCK_FROM_OFDM_INDEX_DIFF; + + /* stay within table range */ + pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index); + gain = power_gain_table[a_band][pwr_index].tx_gain; + dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten; + + /* fill each CCK rate's iwl3945_channel_power_info structure + * NOTE: All CCK-rate Txpwrs are the same for a given chnl! + * NOTE: CCK rates start at end of OFDM rates! */ + for (rate_index = 0; + rate_index < IWL_CCK_RATES; rate_index++) { + pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES]; + pwr_info->requested_power = power; + pwr_info->power_table_index = pwr_index; + pwr_info->base_power_index = base_pwr_index; + pwr_info->tpc.tx_gain = gain; + pwr_info->tpc.dsp_atten = dsp_atten; + } + + /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ + for (scan_tbl_index = 0; + scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) { + s32 actual_index = (scan_tbl_index == 0) ? + IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE; + iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index, + actual_index, clip_pwrs, ch_info, a_band); + } + } + + return 0; +} + +int iwl3945_hw_rxq_stop(struct iwl_priv *priv) +{ + int rc; + + iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), 0); + rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS, + FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000); + if (rc < 0) + IWL_ERR(priv, "Can't stop Rx DMA.\n"); + + return 0; +} + +int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq) +{ + int txq_id = txq->q.id; + + struct iwl3945_shared *shared_data = priv->_3945.shared_virt; + + shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr); + + iwl_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0); + iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0); + + iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), + FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT | + FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF | + FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD | + FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL | + FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE); + + /* fake read to flush all prev. writes */ + iwl_read32(priv, FH39_TSSR_CBB_BASE); + + return 0; +} + +/* + * HCMD utils + */ +static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len) +{ + switch (cmd_id) { + case REPLY_RXON: + return sizeof(struct iwl3945_rxon_cmd); + case POWER_TABLE_CMD: + return sizeof(struct iwl3945_powertable_cmd); + default: + return len; + } +} + + +static u16 iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data) +{ + struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data; + addsta->mode = cmd->mode; + memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify)); + memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo)); + addsta->station_flags = cmd->station_flags; + addsta->station_flags_msk = cmd->station_flags_msk; + addsta->tid_disable_tx = cpu_to_le16(0); + addsta->rate_n_flags = cmd->rate_n_flags; + addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid; + addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid; + addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn; + + return (u16)sizeof(struct iwl3945_addsta_cmd); +} + +static int iwl3945_add_bssid_station(struct iwl_priv *priv, + const u8 *addr, u8 *sta_id_r) +{ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + int ret; + u8 sta_id; + unsigned long flags; + + if (sta_id_r) + *sta_id_r = IWL_INVALID_STATION; + + ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); + if (ret) { + IWL_ERR(priv, "Unable to add station %pM\n", addr); + return ret; + } + + if (sta_id_r) + *sta_id_r = sta_id; + + spin_lock_irqsave(&priv->sta_lock, flags); + priv->stations[sta_id].used |= IWL_STA_LOCAL; + spin_unlock_irqrestore(&priv->sta_lock, flags); + + return 0; +} +static int iwl3945_manage_ibss_station(struct iwl_priv *priv, + struct ieee80211_vif *vif, bool add) +{ + struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; + int ret; + + if (add) { + ret = iwl3945_add_bssid_station(priv, vif->bss_conf.bssid, + &vif_priv->ibss_bssid_sta_id); + if (ret) + return ret; + + iwl3945_sync_sta(priv, vif_priv->ibss_bssid_sta_id, + (priv->band == IEEE80211_BAND_5GHZ) ? + IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP); + iwl3945_rate_scale_init(priv->hw, vif_priv->ibss_bssid_sta_id); + + return 0; + } + + return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id, + vif->bss_conf.bssid); +} + +/** + * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table + */ +int iwl3945_init_hw_rate_table(struct iwl_priv *priv) +{ + int rc, i, index, prev_index; + struct iwl3945_rate_scaling_cmd rate_cmd = { + .reserved = {0, 0, 0}, + }; + struct iwl3945_rate_scaling_info *table = rate_cmd.table; + + for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) { + index = iwl3945_rates[i].table_rs_index; + + table[index].rate_n_flags = + iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0); + table[index].try_cnt = priv->retry_rate; + prev_index = iwl3945_get_prev_ieee_rate(i); + table[index].next_rate_index = + iwl3945_rates[prev_index].table_rs_index; + } + + switch (priv->band) { + case IEEE80211_BAND_5GHZ: + IWL_DEBUG_RATE(priv, "Select A mode rate scale\n"); + /* If one of the following CCK rates is used, + * have it fall back to the 6M OFDM rate */ + for (i = IWL_RATE_1M_INDEX_TABLE; + i <= IWL_RATE_11M_INDEX_TABLE; i++) + table[i].next_rate_index = + iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index; + + /* Don't fall back to CCK rates */ + table[IWL_RATE_12M_INDEX_TABLE].next_rate_index = + IWL_RATE_9M_INDEX_TABLE; + + /* Don't drop out of OFDM rates */ + table[IWL_RATE_6M_INDEX_TABLE].next_rate_index = + iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index; + break; + + case IEEE80211_BAND_2GHZ: + IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n"); + /* If an OFDM rate is used, have it fall back to the + * 1M CCK rates */ + + if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) && + iwl_is_associated(priv, IWL_RXON_CTX_BSS)) { + + index = IWL_FIRST_CCK_RATE; + for (i = IWL_RATE_6M_INDEX_TABLE; + i <= IWL_RATE_54M_INDEX_TABLE; i++) + table[i].next_rate_index = + iwl3945_rates[index].table_rs_index; + + index = IWL_RATE_11M_INDEX_TABLE; + /* CCK shouldn't fall back to OFDM... */ + table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE; + } + break; + + default: + WARN_ON(1); + break; + } + + /* Update the rate scaling for control frame Tx */ + rate_cmd.table_id = 0; + rc = iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd), + &rate_cmd); + if (rc) + return rc; + + /* Update the rate scaling for data frame Tx */ + rate_cmd.table_id = 1; + return iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd), + &rate_cmd); +} + +/* Called when initializing driver */ +int iwl3945_hw_set_hw_params(struct iwl_priv *priv) +{ + memset((void *)&priv->hw_params, 0, + sizeof(struct iwl_hw_params)); + + priv->_3945.shared_virt = + dma_alloc_coherent(&priv->pci_dev->dev, + sizeof(struct iwl3945_shared), + &priv->_3945.shared_phys, GFP_KERNEL); + if (!priv->_3945.shared_virt) { + IWL_ERR(priv, "failed to allocate pci memory\n"); + return -ENOMEM; + } + + /* Assign number of Usable TX queues */ + priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues; + + priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd); + priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_3K); + priv->hw_params.max_rxq_size = RX_QUEUE_SIZE; + priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG; + priv->hw_params.max_stations = IWL3945_STATION_COUNT; + priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWL3945_BROADCAST_ID; + + priv->sta_key_max_num = STA_KEY_MAX_NUM; + + priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR; + priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL; + priv->hw_params.beacon_time_tsf_bits = IWL3945_EXT_BEACON_TIME_POS; + + return 0; +} + +unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv, + struct iwl3945_frame *frame, u8 rate) +{ + struct iwl3945_tx_beacon_cmd *tx_beacon_cmd; + unsigned int frame_size; + + tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u; + memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd)); + + tx_beacon_cmd->tx.sta_id = + priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id; + tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; + + frame_size = iwl3945_fill_beacon_frame(priv, + tx_beacon_cmd->frame, + sizeof(frame->u) - sizeof(*tx_beacon_cmd)); + + BUG_ON(frame_size > MAX_MPDU_SIZE); + tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); + + tx_beacon_cmd->tx.rate = rate; + tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK | + TX_CMD_FLG_TSF_MSK); + + /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/ + tx_beacon_cmd->tx.supp_rates[0] = + (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; + + tx_beacon_cmd->tx.supp_rates[1] = + (IWL_CCK_BASIC_RATES_MASK & 0xF); + + return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size; +} + +void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv) +{ + priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx; + priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx; +} + +void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv) +{ + INIT_DELAYED_WORK(&priv->_3945.thermal_periodic, + iwl3945_bg_reg_txpower_periodic); +} + +void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv) +{ + cancel_delayed_work(&priv->_3945.thermal_periodic); +} + +/* check contents of special bootstrap uCode SRAM */ +static int iwl3945_verify_bsm(struct iwl_priv *priv) + { + __le32 *image = priv->ucode_boot.v_addr; + u32 len = priv->ucode_boot.len; + u32 reg; + u32 val; + + IWL_DEBUG_INFO(priv, "Begin verify bsm\n"); + + /* verify BSM SRAM contents */ + val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG); + for (reg = BSM_SRAM_LOWER_BOUND; + reg < BSM_SRAM_LOWER_BOUND + len; + reg += sizeof(u32), image++) { + val = iwl_read_prph(priv, reg); + if (val != le32_to_cpu(*image)) { + IWL_ERR(priv, "BSM uCode verification failed at " + "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", + BSM_SRAM_LOWER_BOUND, + reg - BSM_SRAM_LOWER_BOUND, len, + val, le32_to_cpu(*image)); + return -EIO; + } + } + + IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n"); + + return 0; +} + + +/****************************************************************************** + * + * EEPROM related functions + * + ******************************************************************************/ + +/* + * Clear the OWNER_MSK, to establish driver (instead of uCode running on + * embedded controller) as EEPROM reader; each read is a series of pulses + * to/from the EEPROM chip, not a single event, so even reads could conflict + * if they weren't arbitrated by some ownership mechanism. Here, the driver + * simply claims ownership, which should be safe when this function is called + * (i.e. before loading uCode!). + */ +static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv) +{ + _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK); + return 0; +} + + +static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv) +{ + return; +} + + /** + * iwl3945_load_bsm - Load bootstrap instructions + * + * BSM operation: + * + * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program + * in special SRAM that does not power down during RFKILL. When powering back + * up after power-saving sleeps (or during initial uCode load), the BSM loads + * the bootstrap program into the on-board processor, and starts it. + * + * The bootstrap program loads (via DMA) instructions and data for a new + * program from host DRAM locations indicated by the host driver in the + * BSM_DRAM_* registers. Once the new program is loaded, it starts + * automatically. + * + * When initializing the NIC, the host driver points the BSM to the + * "initialize" uCode image. This uCode sets up some internal data, then + * notifies host via "initialize alive" that it is complete. + * + * The host then replaces the BSM_DRAM_* pointer values to point to the + * normal runtime uCode instructions and a backup uCode data cache buffer + * (filled initially with starting data values for the on-board processor), + * then triggers the "initialize" uCode to load and launch the runtime uCode, + * which begins normal operation. + * + * When doing a power-save shutdown, runtime uCode saves data SRAM into + * the backup data cache in DRAM before SRAM is powered down. + * + * When powering back up, the BSM loads the bootstrap program. This reloads + * the runtime uCode instructions and the backup data cache into SRAM, + * and re-launches the runtime uCode from where it left off. + */ +static int iwl3945_load_bsm(struct iwl_priv *priv) +{ + __le32 *image = priv->ucode_boot.v_addr; + u32 len = priv->ucode_boot.len; + dma_addr_t pinst; + dma_addr_t pdata; + u32 inst_len; + u32 data_len; + int rc; + int i; + u32 done; + u32 reg_offset; + + IWL_DEBUG_INFO(priv, "Begin load bsm\n"); + + /* make sure bootstrap program is no larger than BSM's SRAM size */ + if (len > IWL39_MAX_BSM_SIZE) + return -EINVAL; + + /* Tell bootstrap uCode where to find the "Initialize" uCode + * in host DRAM ... host DRAM physical address bits 31:0 for 3945. + * NOTE: iwl3945_initialize_alive_start() will replace these values, + * after the "initialize" uCode has run, to point to + * runtime/protocol instructions and backup data cache. */ + pinst = priv->ucode_init.p_addr; + pdata = priv->ucode_init_data.p_addr; + inst_len = priv->ucode_init.len; + data_len = priv->ucode_init_data.len; + + iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); + iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); + iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); + iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); + + /* Fill BSM memory with bootstrap instructions */ + for (reg_offset = BSM_SRAM_LOWER_BOUND; + reg_offset < BSM_SRAM_LOWER_BOUND + len; + reg_offset += sizeof(u32), image++) + _iwl_write_prph(priv, reg_offset, + le32_to_cpu(*image)); + + rc = iwl3945_verify_bsm(priv); + if (rc) + return rc; + + /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ + iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0); + iwl_write_prph(priv, BSM_WR_MEM_DST_REG, + IWL39_RTC_INST_LOWER_BOUND); + iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); + + /* Load bootstrap code into instruction SRAM now, + * to prepare to load "initialize" uCode */ + iwl_write_prph(priv, BSM_WR_CTRL_REG, + BSM_WR_CTRL_REG_BIT_START); + + /* Wait for load of bootstrap uCode to finish */ + for (i = 0; i < 100; i++) { + done = iwl_read_prph(priv, BSM_WR_CTRL_REG); + if (!(done & BSM_WR_CTRL_REG_BIT_START)) + break; + udelay(10); + } + if (i < 100) + IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i); + else { + IWL_ERR(priv, "BSM write did not complete!\n"); + return -EIO; + } + + /* Enable future boot loads whenever power management unit triggers it + * (e.g. when powering back up after power-save shutdown) */ + iwl_write_prph(priv, BSM_WR_CTRL_REG, + BSM_WR_CTRL_REG_BIT_START_EN); + + return 0; +} + +static struct iwl_hcmd_ops iwl3945_hcmd = { + .rxon_assoc = iwl3945_send_rxon_assoc, + .commit_rxon = iwl3945_commit_rxon, + .send_bt_config = iwl_send_bt_config, +}; + +static struct iwl_lib_ops iwl3945_lib = { + .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd, + .txq_free_tfd = iwl3945_hw_txq_free_tfd, + .txq_init = iwl3945_hw_tx_queue_init, + .load_ucode = iwl3945_load_bsm, + .dump_nic_event_log = iwl3945_dump_nic_event_log, + .dump_nic_error_log = iwl3945_dump_nic_error_log, + .apm_ops = { + .init = iwl3945_apm_init, + .config = iwl3945_nic_config, + }, + .eeprom_ops = { + .regulatory_bands = { + EEPROM_REGULATORY_BAND_1_CHANNELS, + EEPROM_REGULATORY_BAND_2_CHANNELS, + EEPROM_REGULATORY_BAND_3_CHANNELS, + EEPROM_REGULATORY_BAND_4_CHANNELS, + EEPROM_REGULATORY_BAND_5_CHANNELS, + EEPROM_REGULATORY_BAND_NO_HT40, + EEPROM_REGULATORY_BAND_NO_HT40, + }, + .acquire_semaphore = iwl3945_eeprom_acquire_semaphore, + .release_semaphore = iwl3945_eeprom_release_semaphore, + .query_addr = iwlcore_eeprom_query_addr, + }, + .send_tx_power = iwl3945_send_tx_power, + .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr, + .isr_ops = { + .isr = iwl_isr_legacy, + }, + + .debugfs_ops = { + .rx_stats_read = iwl3945_ucode_rx_stats_read, + .tx_stats_read = iwl3945_ucode_tx_stats_read, + .general_stats_read = iwl3945_ucode_general_stats_read, + }, +}; + +static const struct iwl_legacy_ops iwl3945_legacy_ops = { + .post_associate = iwl3945_post_associate, + .config_ap = iwl3945_config_ap, + .manage_ibss_station = iwl3945_manage_ibss_station, +}; + +static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = { + .get_hcmd_size = iwl3945_get_hcmd_size, + .build_addsta_hcmd = iwl3945_build_addsta_hcmd, + .tx_cmd_protection = iwl_legacy_tx_cmd_protection, + .request_scan = iwl3945_request_scan, + .post_scan = iwl3945_post_scan, +}; + +static const struct iwl_ops iwl3945_ops = { + .lib = &iwl3945_lib, + .hcmd = &iwl3945_hcmd, + .utils = &iwl3945_hcmd_utils, + .led = &iwl3945_led_ops, + .legacy = &iwl3945_legacy_ops, + .ieee80211_ops = &iwl3945_hw_ops, +}; + +static struct iwl_base_params iwl3945_base_params = { + .eeprom_size = IWL3945_EEPROM_IMG_SIZE, + .num_of_queues = IWL39_NUM_QUEUES, + .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL, + .set_l0s = false, + .use_bsm = true, + .use_isr_legacy = true, + .led_compensation = 64, + .broken_powersave = true, + .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF, + .wd_timeout = IWL_DEF_WD_TIMEOUT, + .max_event_log_size = 512, + .tx_power_by_driver = true, +}; + +static struct iwl_cfg iwl3945_bg_cfg = { + .name = "3945BG", + .fw_name_pre = IWL3945_FW_PRE, + .ucode_api_max = IWL3945_UCODE_API_MAX, + .ucode_api_min = IWL3945_UCODE_API_MIN, + .sku = IWL_SKU_G, + .eeprom_ver = EEPROM_3945_EEPROM_VERSION, + .ops = &iwl3945_ops, + .mod_params = &iwl3945_mod_params, + .base_params = &iwl3945_base_params, + .led_mode = IWL_LED_BLINK, +}; + +static struct iwl_cfg iwl3945_abg_cfg = { + .name = "3945ABG", + .fw_name_pre = IWL3945_FW_PRE, + .ucode_api_max = IWL3945_UCODE_API_MAX, + .ucode_api_min = IWL3945_UCODE_API_MIN, + .sku = IWL_SKU_A|IWL_SKU_G, + .eeprom_ver = EEPROM_3945_EEPROM_VERSION, + .ops = &iwl3945_ops, + .mod_params = &iwl3945_mod_params, + .base_params = &iwl3945_base_params, + .led_mode = IWL_LED_BLINK, +}; + +DEFINE_PCI_DEVICE_TABLE(iwl3945_hw_card_ids) = { + {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)}, + {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)}, + {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)}, + {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)}, + {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)}, + {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)}, + {0} +}; + +MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids); diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h new file mode 100644 index 000000000000..3eef1eb74a78 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-3945.h @@ -0,0 +1,308 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ +/* + * Please use this file (iwl-3945.h) for driver implementation definitions. + * Please use iwl-3945-commands.h for uCode API definitions. + * Please use iwl-3945-hw.h for hardware-related definitions. + */ + +#ifndef __iwl_3945_h__ +#define __iwl_3945_h__ + +#include <linux/pci.h> /* for struct pci_device_id */ +#include <linux/kernel.h> +#include <net/ieee80211_radiotap.h> + +/* Hardware specific file defines the PCI IDs table for that hardware module */ +extern const struct pci_device_id iwl3945_hw_card_ids[]; + +#include "iwl-csr.h" +#include "iwl-prph.h" +#include "iwl-fh.h" +#include "iwl-3945-hw.h" +#include "iwl-debug.h" +#include "iwl-power.h" +#include "iwl-dev.h" +#include "iwl-led.h" + +/* Highest firmware API version supported */ +#define IWL3945_UCODE_API_MAX 2 + +/* Lowest firmware API version supported */ +#define IWL3945_UCODE_API_MIN 1 + +#define IWL3945_FW_PRE "iwlwifi-3945-" +#define _IWL3945_MODULE_FIRMWARE(api) IWL3945_FW_PRE #api ".ucode" +#define IWL3945_MODULE_FIRMWARE(api) _IWL3945_MODULE_FIRMWARE(api) + +/* Default noise level to report when noise measurement is not available. + * This may be because we're: + * 1) Not associated (4965, no beacon statistics being sent to driver) + * 2) Scanning (noise measurement does not apply to associated channel) + * 3) Receiving CCK (3945 delivers noise info only for OFDM frames) + * Use default noise value of -127 ... this is below the range of measurable + * Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user. + * Also, -127 works better than 0 when averaging frames with/without + * noise info (e.g. averaging might be done in app); measured dBm values are + * always negative ... using a negative value as the default keeps all + * averages within an s8's (used in some apps) range of negative values. */ +#define IWL_NOISE_MEAS_NOT_AVAILABLE (-127) + +/* Module parameters accessible from iwl-*.c */ +extern struct iwl_mod_params iwl3945_mod_params; + +struct iwl3945_rate_scale_data { + u64 data; + s32 success_counter; + s32 success_ratio; + s32 counter; + s32 average_tpt; + unsigned long stamp; +}; + +struct iwl3945_rs_sta { + spinlock_t lock; + struct iwl_priv *priv; + s32 *expected_tpt; + unsigned long last_partial_flush; + unsigned long last_flush; + u32 flush_time; + u32 last_tx_packets; + u32 tx_packets; + u8 tgg; + u8 flush_pending; + u8 start_rate; + struct timer_list rate_scale_flush; + struct iwl3945_rate_scale_data win[IWL_RATE_COUNT_3945]; +#ifdef CONFIG_MAC80211_DEBUGFS + struct dentry *rs_sta_dbgfs_stats_table_file; +#endif + + /* used to be in sta_info */ + int last_txrate_idx; +}; + + +/* + * The common struct MUST be first because it is shared between + * 3945 and agn! + */ +struct iwl3945_sta_priv { + struct iwl_station_priv_common common; + struct iwl3945_rs_sta rs_sta; +}; + +enum iwl3945_antenna { + IWL_ANTENNA_DIVERSITY, + IWL_ANTENNA_MAIN, + IWL_ANTENNA_AUX +}; + +/* + * RTS threshold here is total size [2347] minus 4 FCS bytes + * Per spec: + * a value of 0 means RTS on all data/management packets + * a value > max MSDU size means no RTS + * else RTS for data/management frames where MPDU is larger + * than RTS value. + */ +#define DEFAULT_RTS_THRESHOLD 2347U +#define MIN_RTS_THRESHOLD 0U +#define MAX_RTS_THRESHOLD 2347U +#define MAX_MSDU_SIZE 2304U +#define MAX_MPDU_SIZE 2346U +#define DEFAULT_BEACON_INTERVAL 100U +#define DEFAULT_SHORT_RETRY_LIMIT 7U +#define DEFAULT_LONG_RETRY_LIMIT 4U + +#define IWL_TX_FIFO_AC0 0 +#define IWL_TX_FIFO_AC1 1 +#define IWL_TX_FIFO_AC2 2 +#define IWL_TX_FIFO_AC3 3 +#define IWL_TX_FIFO_HCCA_1 5 +#define IWL_TX_FIFO_HCCA_2 6 +#define IWL_TX_FIFO_NONE 7 + +#define IEEE80211_DATA_LEN 2304 +#define IEEE80211_4ADDR_LEN 30 +#define IEEE80211_HLEN (IEEE80211_4ADDR_LEN) +#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN) + +struct iwl3945_frame { + union { + struct ieee80211_hdr frame; + struct iwl3945_tx_beacon_cmd beacon; + u8 raw[IEEE80211_FRAME_LEN]; + u8 cmd[360]; + } u; + struct list_head list; +}; + +#define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4) +#define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ) +#define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4) + +#define SUP_RATE_11A_MAX_NUM_CHANNELS 8 +#define SUP_RATE_11B_MAX_NUM_CHANNELS 4 +#define SUP_RATE_11G_MAX_NUM_CHANNELS 12 + +#define IWL_SUPPORTED_RATES_IE_LEN 8 + +#define SCAN_INTERVAL 100 + +#define MAX_TID_COUNT 9 + +#define IWL_INVALID_RATE 0xFF +#define IWL_INVALID_VALUE -1 + +#define STA_PS_STATUS_WAKE 0 +#define STA_PS_STATUS_SLEEP 1 + +struct iwl3945_ibss_seq { + u8 mac[ETH_ALEN]; + u16 seq_num; + u16 frag_num; + unsigned long packet_time; + struct list_head list; +}; + +#define IWL_RX_HDR(x) ((struct iwl3945_rx_frame_hdr *)(\ + x->u.rx_frame.stats.payload + \ + x->u.rx_frame.stats.phy_count)) +#define IWL_RX_END(x) ((struct iwl3945_rx_frame_end *)(\ + IWL_RX_HDR(x)->payload + \ + le16_to_cpu(IWL_RX_HDR(x)->len))) +#define IWL_RX_STATS(x) (&x->u.rx_frame.stats) +#define IWL_RX_DATA(x) (IWL_RX_HDR(x)->payload) + + +/****************************************************************************** + * + * Functions implemented in iwl-base.c which are forward declared here + * for use by iwl-*.c + * + *****************************************************************************/ +extern int iwl3945_calc_db_from_ratio(int sig_ratio); +extern void iwl3945_rx_replenish(void *data); +extern void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq); +extern unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv, + struct ieee80211_hdr *hdr,int left); +extern int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log, + char **buf, bool display); +extern void iwl3945_dump_nic_error_log(struct iwl_priv *priv); + +/****************************************************************************** + * + * Functions implemented in iwl-[34]*.c which are forward declared here + * for use by iwl-base.c + * + * NOTE: The implementation of these functions are hardware specific + * which is why they are in the hardware specific files (vs. iwl-base.c) + * + * Naming convention -- + * iwl3945_ <-- Its part of iwlwifi (should be changed to iwl3945_) + * iwl3945_hw_ <-- Hardware specific (implemented in iwl-XXXX.c by all HW) + * iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX) + * iwl3945_bg_ <-- Called from work queue context + * iwl3945_mac_ <-- mac80211 callback + * + ****************************************************************************/ +extern void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv); +extern void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv); +extern void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv); +extern int iwl3945_hw_rxq_stop(struct iwl_priv *priv); +extern int iwl3945_hw_set_hw_params(struct iwl_priv *priv); +extern int iwl3945_hw_nic_init(struct iwl_priv *priv); +extern int iwl3945_hw_nic_stop_master(struct iwl_priv *priv); +extern void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv); +extern void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv); +extern int iwl3945_hw_nic_reset(struct iwl_priv *priv); +extern int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, + struct iwl_tx_queue *txq, + dma_addr_t addr, u16 len, + u8 reset, u8 pad); +extern void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, + struct iwl_tx_queue *txq); +extern int iwl3945_hw_get_temperature(struct iwl_priv *priv); +extern int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, + struct iwl_tx_queue *txq); +extern unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv, + struct iwl3945_frame *frame, u8 rate); +void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv, + struct iwl_device_cmd *cmd, + struct ieee80211_tx_info *info, + struct ieee80211_hdr *hdr, + int sta_id, int tx_id); +extern int iwl3945_hw_reg_send_txpower(struct iwl_priv *priv); +extern int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power); +extern void iwl3945_hw_rx_statistics(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb); +void iwl3945_reply_statistics(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb); +extern void iwl3945_disable_events(struct iwl_priv *priv); +extern int iwl4965_get_temperature(const struct iwl_priv *priv); +extern void iwl3945_post_associate(struct iwl_priv *priv); +extern void iwl3945_config_ap(struct iwl_priv *priv); + +extern int iwl3945_commit_rxon(struct iwl_priv *priv, + struct iwl_rxon_context *ctx); + +/** + * iwl3945_hw_find_station - Find station id for a given BSSID + * @bssid: MAC address of station ID to find + * + * NOTE: This should not be hardware specific but the code has + * not yet been merged into a single common layer for managing the + * station tables. + */ +extern u8 iwl3945_hw_find_station(struct iwl_priv *priv, const u8 *bssid); + +extern struct ieee80211_ops iwl3945_hw_ops; + +/* + * Forward declare iwl-3945.c functions for iwl-base.c + */ +extern __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv); +extern int iwl3945_init_hw_rate_table(struct iwl_priv *priv); +extern void iwl3945_reg_txpower_periodic(struct iwl_priv *priv); +extern int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv); + +extern const struct iwl_channel_info *iwl3945_get_channel_info( + const struct iwl_priv *priv, enum ieee80211_band band, u16 channel); + +extern int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate); + +/* scanning */ +int iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif); +void iwl3945_post_scan(struct iwl_priv *priv); + +/* rates */ +extern const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945]; + +/* Requires full declaration of iwl_priv before including */ +#include "iwl-io.h" + +#endif diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-hw.h b/drivers/net/wireless/iwlwifi/iwl-4965-hw.h new file mode 100644 index 000000000000..9166794eda0d --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-4965-hw.h @@ -0,0 +1,792 @@ +/****************************************************************************** + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + * BSD LICENSE + * + * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + *****************************************************************************/ +/* + * Please use this file (iwl-4965-hw.h) only for hardware-related definitions. + * Use iwl-commands.h for uCode API definitions. + * Use iwl-dev.h for driver implementation definitions. + */ + +#ifndef __iwl_4965_hw_h__ +#define __iwl_4965_hw_h__ + +#include "iwl-fh.h" + +/* EEPROM */ +#define IWL4965_EEPROM_IMG_SIZE 1024 + +/* + * uCode queue management definitions ... + * The first queue used for block-ack aggregation is #7 (4965 only). + * All block-ack aggregation queues should map to Tx DMA/FIFO channel 7. + */ +#define IWL49_FIRST_AMPDU_QUEUE 7 + +/* Sizes and addresses for instruction and data memory (SRAM) in + * 4965's embedded processor. Driver access is via HBUS_TARG_MEM_* regs. */ +#define IWL49_RTC_INST_LOWER_BOUND (0x000000) +#define IWL49_RTC_INST_UPPER_BOUND (0x018000) + +#define IWL49_RTC_DATA_LOWER_BOUND (0x800000) +#define IWL49_RTC_DATA_UPPER_BOUND (0x80A000) + +#define IWL49_RTC_INST_SIZE (IWL49_RTC_INST_UPPER_BOUND - \ + IWL49_RTC_INST_LOWER_BOUND) +#define IWL49_RTC_DATA_SIZE (IWL49_RTC_DATA_UPPER_BOUND - \ + IWL49_RTC_DATA_LOWER_BOUND) + +#define IWL49_MAX_INST_SIZE IWL49_RTC_INST_SIZE +#define IWL49_MAX_DATA_SIZE IWL49_RTC_DATA_SIZE + +/* Size of uCode instruction memory in bootstrap state machine */ +#define IWL49_MAX_BSM_SIZE BSM_SRAM_SIZE + +static inline int iwl4965_hw_valid_rtc_data_addr(u32 addr) +{ + return (addr >= IWL49_RTC_DATA_LOWER_BOUND) && + (addr < IWL49_RTC_DATA_UPPER_BOUND); +} + +/********************* START TEMPERATURE *************************************/ + +/** + * 4965 temperature calculation. + * + * The driver must calculate the device temperature before calculating + * a txpower setting (amplifier gain is temperature dependent). The + * calculation uses 4 measurements, 3 of which (R1, R2, R3) are calibration + * values used for the life of the driver, and one of which (R4) is the + * real-time temperature indicator. + * + * uCode provides all 4 values to the driver via the "initialize alive" + * notification (see struct iwl4965_init_alive_resp). After the runtime uCode + * image loads, uCode updates the R4 value via statistics notifications + * (see STATISTICS_NOTIFICATION), which occur after each received beacon + * when associated, or can be requested via REPLY_STATISTICS_CMD. + * + * NOTE: uCode provides the R4 value as a 23-bit signed value. Driver + * must sign-extend to 32 bits before applying formula below. + * + * Formula: + * + * degrees Kelvin = ((97 * 259 * (R4 - R2) / (R3 - R1)) / 100) + 8 + * + * NOTE: The basic formula is 259 * (R4-R2) / (R3-R1). The 97/100 is + * an additional correction, which should be centered around 0 degrees + * Celsius (273 degrees Kelvin). The 8 (3 percent of 273) compensates for + * centering the 97/100 correction around 0 degrees K. + * + * Add 273 to Kelvin value to find degrees Celsius, for comparing current + * temperature with factory-measured temperatures when calculating txpower + * settings. + */ +#define TEMPERATURE_CALIB_KELVIN_OFFSET 8 +#define TEMPERATURE_CALIB_A_VAL 259 + +/* Limit range of calculated temperature to be between these Kelvin values */ +#define IWL_TX_POWER_TEMPERATURE_MIN (263) +#define IWL_TX_POWER_TEMPERATURE_MAX (410) + +#define IWL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(t) \ + (((t) < IWL_TX_POWER_TEMPERATURE_MIN) || \ + ((t) > IWL_TX_POWER_TEMPERATURE_MAX)) + +/********************* END TEMPERATURE ***************************************/ + +/********************* START TXPOWER *****************************************/ + +/** + * 4965 txpower calculations rely on information from three sources: + * + * 1) EEPROM + * 2) "initialize" alive notification + * 3) statistics notifications + * + * EEPROM data consists of: + * + * 1) Regulatory information (max txpower and channel usage flags) is provided + * separately for each channel that can possibly supported by 4965. + * 40 MHz wide (.11n HT40) channels are listed separately from 20 MHz + * (legacy) channels. + * + * See struct iwl4965_eeprom_channel for format, and struct iwl4965_eeprom + * for locations in EEPROM. + * + * 2) Factory txpower calibration information is provided separately for + * sub-bands of contiguous channels. 2.4GHz has just one sub-band, + * but 5 GHz has several sub-bands. + * + * In addition, per-band (2.4 and 5 Ghz) saturation txpowers are provided. + * + * See struct iwl4965_eeprom_calib_info (and the tree of structures + * contained within it) for format, and struct iwl4965_eeprom for + * locations in EEPROM. + * + * "Initialization alive" notification (see struct iwl4965_init_alive_resp) + * consists of: + * + * 1) Temperature calculation parameters. + * + * 2) Power supply voltage measurement. + * + * 3) Tx gain compensation to balance 2 transmitters for MIMO use. + * + * Statistics notifications deliver: + * + * 1) Current values for temperature param R4. + */ + +/** + * To calculate a txpower setting for a given desired target txpower, channel, + * modulation bit rate, and transmitter chain (4965 has 2 transmitters to + * support MIMO and transmit diversity), driver must do the following: + * + * 1) Compare desired txpower vs. (EEPROM) regulatory limit for this channel. + * Do not exceed regulatory limit; reduce target txpower if necessary. + * + * If setting up txpowers for MIMO rates (rate indexes 8-15, 24-31), + * 2 transmitters will be used simultaneously; driver must reduce the + * regulatory limit by 3 dB (half-power) for each transmitter, so the + * combined total output of the 2 transmitters is within regulatory limits. + * + * + * 2) Compare target txpower vs. (EEPROM) saturation txpower *reduced by + * backoff for this bit rate*. Do not exceed (saturation - backoff[rate]); + * reduce target txpower if necessary. + * + * Backoff values below are in 1/2 dB units (equivalent to steps in + * txpower gain tables): + * + * OFDM 6 - 36 MBit: 10 steps (5 dB) + * OFDM 48 MBit: 15 steps (7.5 dB) + * OFDM 54 MBit: 17 steps (8.5 dB) + * OFDM 60 MBit: 20 steps (10 dB) + * CCK all rates: 10 steps (5 dB) + * + * Backoff values apply to saturation txpower on a per-transmitter basis; + * when using MIMO (2 transmitters), each transmitter uses the same + * saturation level provided in EEPROM, and the same backoff values; + * no reduction (such as with regulatory txpower limits) is required. + * + * Saturation and Backoff values apply equally to 20 Mhz (legacy) channel + * widths and 40 Mhz (.11n HT40) channel widths; there is no separate + * factory measurement for ht40 channels. + * + * The result of this step is the final target txpower. The rest of + * the steps figure out the proper settings for the device to achieve + * that target txpower. + * + * + * 3) Determine (EEPROM) calibration sub band for the target channel, by + * comparing against first and last channels in each sub band + * (see struct iwl4965_eeprom_calib_subband_info). + * + * + * 4) Linearly interpolate (EEPROM) factory calibration measurement sets, + * referencing the 2 factory-measured (sample) channels within the sub band. + * + * Interpolation is based on difference between target channel's frequency + * and the sample channels' frequencies. Since channel numbers are based + * on frequency (5 MHz between each channel number), this is equivalent + * to interpolating based on channel number differences. + * + * Note that the sample channels may or may not be the channels at the + * edges of the sub band. The target channel may be "outside" of the + * span of the sampled channels. + * + * Driver may choose the pair (for 2 Tx chains) of measurements (see + * struct iwl4965_eeprom_calib_ch_info) for which the actual measured + * txpower comes closest to the desired txpower. Usually, though, + * the middle set of measurements is closest to the regulatory limits, + * and is therefore a good choice for all txpower calculations (this + * assumes that high accuracy is needed for maximizing legal txpower, + * while lower txpower configurations do not need as much accuracy). + * + * Driver should interpolate both members of the chosen measurement pair, + * i.e. for both Tx chains (radio transmitters), unless the driver knows + * that only one of the chains will be used (e.g. only one tx antenna + * connected, but this should be unusual). The rate scaling algorithm + * switches antennas to find best performance, so both Tx chains will + * be used (although only one at a time) even for non-MIMO transmissions. + * + * Driver should interpolate factory values for temperature, gain table + * index, and actual power. The power amplifier detector values are + * not used by the driver. + * + * Sanity check: If the target channel happens to be one of the sample + * channels, the results should agree with the sample channel's + * measurements! + * + * + * 5) Find difference between desired txpower and (interpolated) + * factory-measured txpower. Using (interpolated) factory gain table index + * (shown elsewhere) as a starting point, adjust this index lower to + * increase txpower, or higher to decrease txpower, until the target + * txpower is reached. Each step in the gain table is 1/2 dB. + * + * For example, if factory measured txpower is 16 dBm, and target txpower + * is 13 dBm, add 6 steps to the factory gain index to reduce txpower + * by 3 dB. + * + * + * 6) Find difference between current device temperature and (interpolated) + * factory-measured temperature for sub-band. Factory values are in + * degrees Celsius. To calculate current temperature, see comments for + * "4965 temperature calculation". + * + * If current temperature is higher than factory temperature, driver must + * increase gain (lower gain table index), and vice verse. + * + * Temperature affects gain differently for different channels: + * + * 2.4 GHz all channels: 3.5 degrees per half-dB step + * 5 GHz channels 34-43: 4.5 degrees per half-dB step + * 5 GHz channels >= 44: 4.0 degrees per half-dB step + * + * NOTE: Temperature can increase rapidly when transmitting, especially + * with heavy traffic at high txpowers. Driver should update + * temperature calculations often under these conditions to + * maintain strong txpower in the face of rising temperature. + * + * + * 7) Find difference between current power supply voltage indicator + * (from "initialize alive") and factory-measured power supply voltage + * indicator (EEPROM). + * + * If the current voltage is higher (indicator is lower) than factory + * voltage, gain should be reduced (gain table index increased) by: + * + * (eeprom - current) / 7 + * + * If the current voltage is lower (indicator is higher) than factory + * voltage, gain should be increased (gain table index decreased) by: + * + * 2 * (current - eeprom) / 7 + * + * If number of index steps in either direction turns out to be > 2, + * something is wrong ... just use 0. + * + * NOTE: Voltage compensation is independent of band/channel. + * + * NOTE: "Initialize" uCode measures current voltage, which is assumed + * to be constant after this initial measurement. Voltage + * compensation for txpower (number of steps in gain table) + * may be calculated once and used until the next uCode bootload. + * + * + * 8) If setting up txpowers for MIMO rates (rate indexes 8-15, 24-31), + * adjust txpower for each transmitter chain, so txpower is balanced + * between the two chains. There are 5 pairs of tx_atten[group][chain] + * values in "initialize alive", one pair for each of 5 channel ranges: + * + * Group 0: 5 GHz channel 34-43 + * Group 1: 5 GHz channel 44-70 + * Group 2: 5 GHz channel 71-124 + * Group 3: 5 GHz channel 125-200 + * Group 4: 2.4 GHz all channels + * + * Add the tx_atten[group][chain] value to the index for the target chain. + * The values are signed, but are in pairs of 0 and a non-negative number, + * so as to reduce gain (if necessary) of the "hotter" channel. This + * avoids any need to double-check for regulatory compliance after + * this step. + * + * + * 9) If setting up for a CCK rate, lower the gain by adding a CCK compensation + * value to the index: + * + * Hardware rev B: 9 steps (4.5 dB) + * Hardware rev C: 5 steps (2.5 dB) + * + * Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG, + * bits [3:2], 1 = B, 2 = C. + * + * NOTE: This compensation is in addition to any saturation backoff that + * might have been applied in an earlier step. + * + * + * 10) Select the gain table, based on band (2.4 vs 5 GHz). + * + * Limit the adjusted index to stay within the table! + * + * + * 11) Read gain table entries for DSP and radio gain, place into appropriate + * location(s) in command (struct iwl4965_txpowertable_cmd). + */ + +/** + * When MIMO is used (2 transmitters operating simultaneously), driver should + * limit each transmitter to deliver a max of 3 dB below the regulatory limit + * for the device. That is, use half power for each transmitter, so total + * txpower is within regulatory limits. + * + * The value "6" represents number of steps in gain table to reduce power 3 dB. + * Each step is 1/2 dB. + */ +#define IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION (6) + +/** + * CCK gain compensation. + * + * When calculating txpowers for CCK, after making sure that the target power + * is within regulatory and saturation limits, driver must additionally + * back off gain by adding these values to the gain table index. + * + * Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG, + * bits [3:2], 1 = B, 2 = C. + */ +#define IWL_TX_POWER_CCK_COMPENSATION_B_STEP (9) +#define IWL_TX_POWER_CCK_COMPENSATION_C_STEP (5) + +/* + * 4965 power supply voltage compensation for txpower + */ +#define TX_POWER_IWL_VOLTAGE_CODES_PER_03V (7) + +/** + * Gain tables. + * + * The following tables contain pair of values for setting txpower, i.e. + * gain settings for the output of the device's digital signal processor (DSP), + * and for the analog gain structure of the transmitter. + * + * Each entry in the gain tables represents a step of 1/2 dB. Note that these + * are *relative* steps, not indications of absolute output power. Output + * power varies with temperature, voltage, and channel frequency, and also + * requires consideration of average power (to satisfy regulatory constraints), + * and peak power (to avoid distortion of the output signal). + * + * Each entry contains two values: + * 1) DSP gain (or sometimes called DSP attenuation). This is a fine-grained + * linear value that multiplies the output of the digital signal processor, + * before being sent to the analog radio. + * 2) Radio gain. This sets the analog gain of the radio Tx path. + * It is a coarser setting, and behaves in a logarithmic (dB) fashion. + * + * EEPROM contains factory calibration data for txpower. This maps actual + * measured txpower levels to gain settings in the "well known" tables + * below ("well-known" means here that both factory calibration *and* the + * driver work with the same table). + * + * There are separate tables for 2.4 GHz and 5 GHz bands. The 5 GHz table + * has an extension (into negative indexes), in case the driver needs to + * boost power setting for high device temperatures (higher than would be + * present during factory calibration). A 5 Ghz EEPROM index of "40" + * corresponds to the 49th entry in the table used by the driver. + */ +#define MIN_TX_GAIN_INDEX (0) /* highest gain, lowest idx, 2.4 */ +#define MIN_TX_GAIN_INDEX_52GHZ_EXT (-9) /* highest gain, lowest idx, 5 */ + +/** + * 2.4 GHz gain table + * + * Index Dsp gain Radio gain + * 0 110 0x3f (highest gain) + * 1 104 0x3f + * 2 98 0x3f + * 3 110 0x3e + * 4 104 0x3e + * 5 98 0x3e + * 6 110 0x3d + * 7 104 0x3d + * 8 98 0x3d + * 9 110 0x3c + * 10 104 0x3c + * 11 98 0x3c + * 12 110 0x3b + * 13 104 0x3b + * 14 98 0x3b + * 15 110 0x3a + * 16 104 0x3a + * 17 98 0x3a + * 18 110 0x39 + * 19 104 0x39 + * 20 98 0x39 + * 21 110 0x38 + * 22 104 0x38 + * 23 98 0x38 + * 24 110 0x37 + * 25 104 0x37 + * 26 98 0x37 + * 27 110 0x36 + * 28 104 0x36 + * 29 98 0x36 + * 30 110 0x35 + * 31 104 0x35 + * 32 98 0x35 + * 33 110 0x34 + * 34 104 0x34 + * 35 98 0x34 + * 36 110 0x33 + * 37 104 0x33 + * 38 98 0x33 + * 39 110 0x32 + * 40 104 0x32 + * 41 98 0x32 + * 42 110 0x31 + * 43 104 0x31 + * 44 98 0x31 + * 45 110 0x30 + * 46 104 0x30 + * 47 98 0x30 + * 48 110 0x6 + * 49 104 0x6 + * 50 98 0x6 + * 51 110 0x5 + * 52 104 0x5 + * 53 98 0x5 + * 54 110 0x4 + * 55 104 0x4 + * 56 98 0x4 + * 57 110 0x3 + * 58 104 0x3 + * 59 98 0x3 + * 60 110 0x2 + * 61 104 0x2 + * 62 98 0x2 + * 63 110 0x1 + * 64 104 0x1 + * 65 98 0x1 + * 66 110 0x0 + * 67 104 0x0 + * 68 98 0x0 + * 69 97 0 + * 70 96 0 + * 71 95 0 + * 72 94 0 + * 73 93 0 + * 74 92 0 + * 75 91 0 + * 76 90 0 + * 77 89 0 + * 78 88 0 + * 79 87 0 + * 80 86 0 + * 81 85 0 + * 82 84 0 + * 83 83 0 + * 84 82 0 + * 85 81 0 + * 86 80 0 + * 87 79 0 + * 88 78 0 + * 89 77 0 + * 90 76 0 + * 91 75 0 + * 92 74 0 + * 93 73 0 + * 94 72 0 + * 95 71 0 + * 96 70 0 + * 97 69 0 + * 98 68 0 + */ + +/** + * 5 GHz gain table + * + * Index Dsp gain Radio gain + * -9 123 0x3F (highest gain) + * -8 117 0x3F + * -7 110 0x3F + * -6 104 0x3F + * -5 98 0x3F + * -4 110 0x3E + * -3 104 0x3E + * -2 98 0x3E + * -1 110 0x3D + * 0 104 0x3D + * 1 98 0x3D + * 2 110 0x3C + * 3 104 0x3C + * 4 98 0x3C + * 5 110 0x3B + * 6 104 0x3B + * 7 98 0x3B + * 8 110 0x3A + * 9 104 0x3A + * 10 98 0x3A + * 11 110 0x39 + * 12 104 0x39 + * 13 98 0x39 + * 14 110 0x38 + * 15 104 0x38 + * 16 98 0x38 + * 17 110 0x37 + * 18 104 0x37 + * 19 98 0x37 + * 20 110 0x36 + * 21 104 0x36 + * 22 98 0x36 + * 23 110 0x35 + * 24 104 0x35 + * 25 98 0x35 + * 26 110 0x34 + * 27 104 0x34 + * 28 98 0x34 + * 29 110 0x33 + * 30 104 0x33 + * 31 98 0x33 + * 32 110 0x32 + * 33 104 0x32 + * 34 98 0x32 + * 35 110 0x31 + * 36 104 0x31 + * 37 98 0x31 + * 38 110 0x30 + * 39 104 0x30 + * 40 98 0x30 + * 41 110 0x25 + * 42 104 0x25 + * 43 98 0x25 + * 44 110 0x24 + * 45 104 0x24 + * 46 98 0x24 + * 47 110 0x23 + * 48 104 0x23 + * 49 98 0x23 + * 50 110 0x22 + * 51 104 0x18 + * 52 98 0x18 + * 53 110 0x17 + * 54 104 0x17 + * 55 98 0x17 + * 56 110 0x16 + * 57 104 0x16 + * 58 98 0x16 + * 59 110 0x15 + * 60 104 0x15 + * 61 98 0x15 + * 62 110 0x14 + * 63 104 0x14 + * 64 98 0x14 + * 65 110 0x13 + * 66 104 0x13 + * 67 98 0x13 + * 68 110 0x12 + * 69 104 0x08 + * 70 98 0x08 + * 71 110 0x07 + * 72 104 0x07 + * 73 98 0x07 + * 74 110 0x06 + * 75 104 0x06 + * 76 98 0x06 + * 77 110 0x05 + * 78 104 0x05 + * 79 98 0x05 + * 80 110 0x04 + * 81 104 0x04 + * 82 98 0x04 + * 83 110 0x03 + * 84 104 0x03 + * 85 98 0x03 + * 86 110 0x02 + * 87 104 0x02 + * 88 98 0x02 + * 89 110 0x01 + * 90 104 0x01 + * 91 98 0x01 + * 92 110 0x00 + * 93 104 0x00 + * 94 98 0x00 + * 95 93 0x00 + * 96 88 0x00 + * 97 83 0x00 + * 98 78 0x00 + */ + + +/** + * Sanity checks and default values for EEPROM regulatory levels. + * If EEPROM values fall outside MIN/MAX range, use default values. + * + * Regulatory limits refer to the maximum average txpower allowed by + * regulatory agencies in the geographies in which the device is meant + * to be operated. These limits are SKU-specific (i.e. geography-specific), + * and channel-specific; each channel has an individual regulatory limit + * listed in the EEPROM. + * + * Units are in half-dBm (i.e. "34" means 17 dBm). + */ +#define IWL_TX_POWER_DEFAULT_REGULATORY_24 (34) +#define IWL_TX_POWER_DEFAULT_REGULATORY_52 (34) +#define IWL_TX_POWER_REGULATORY_MIN (0) +#define IWL_TX_POWER_REGULATORY_MAX (34) + +/** + * Sanity checks and default values for EEPROM saturation levels. + * If EEPROM values fall outside MIN/MAX range, use default values. + * + * Saturation is the highest level that the output power amplifier can produce + * without significant clipping distortion. This is a "peak" power level. + * Different types of modulation (i.e. various "rates", and OFDM vs. CCK) + * require differing amounts of backoff, relative to their average power output, + * in order to avoid clipping distortion. + * + * Driver must make sure that it is violating neither the saturation limit, + * nor the regulatory limit, when calculating Tx power settings for various + * rates. + * + * Units are in half-dBm (i.e. "38" means 19 dBm). + */ +#define IWL_TX_POWER_DEFAULT_SATURATION_24 (38) +#define IWL_TX_POWER_DEFAULT_SATURATION_52 (38) +#define IWL_TX_POWER_SATURATION_MIN (20) +#define IWL_TX_POWER_SATURATION_MAX (50) + +/** + * Channel groups used for Tx Attenuation calibration (MIMO tx channel balance) + * and thermal Txpower calibration. + * + * When calculating txpower, driver must compensate for current device + * temperature; higher temperature requires higher gain. Driver must calculate + * current temperature (see "4965 temperature calculation"), then compare vs. + * factory calibration temperature in EEPROM; if current temperature is higher + * than factory temperature, driver must *increase* gain by proportions shown + * in table below. If current temperature is lower than factory, driver must + * *decrease* gain. + * + * Different frequency ranges require different compensation, as shown below. + */ +/* Group 0, 5.2 GHz ch 34-43: 4.5 degrees per 1/2 dB. */ +#define CALIB_IWL_TX_ATTEN_GR1_FCH 34 +#define CALIB_IWL_TX_ATTEN_GR1_LCH 43 + +/* Group 1, 5.3 GHz ch 44-70: 4.0 degrees per 1/2 dB. */ +#define CALIB_IWL_TX_ATTEN_GR2_FCH 44 +#define CALIB_IWL_TX_ATTEN_GR2_LCH 70 + +/* Group 2, 5.5 GHz ch 71-124: 4.0 degrees per 1/2 dB. */ +#define CALIB_IWL_TX_ATTEN_GR3_FCH 71 +#define CALIB_IWL_TX_ATTEN_GR3_LCH 124 + +/* Group 3, 5.7 GHz ch 125-200: 4.0 degrees per 1/2 dB. */ +#define CALIB_IWL_TX_ATTEN_GR4_FCH 125 +#define CALIB_IWL_TX_ATTEN_GR4_LCH 200 + +/* Group 4, 2.4 GHz all channels: 3.5 degrees per 1/2 dB. */ +#define CALIB_IWL_TX_ATTEN_GR5_FCH 1 +#define CALIB_IWL_TX_ATTEN_GR5_LCH 20 + +enum { + CALIB_CH_GROUP_1 = 0, + CALIB_CH_GROUP_2 = 1, + CALIB_CH_GROUP_3 = 2, + CALIB_CH_GROUP_4 = 3, + CALIB_CH_GROUP_5 = 4, + CALIB_CH_GROUP_MAX +}; + +/********************* END TXPOWER *****************************************/ + + +/** + * Tx/Rx Queues + * + * Most communication between driver and 4965 is via queues of data buffers. + * For example, all commands that the driver issues to device's embedded + * controller (uCode) are via the command queue (one of the Tx queues). All + * uCode command responses/replies/notifications, including Rx frames, are + * conveyed from uCode to driver via the Rx queue. + * + * Most support for these queues, including handshake support, resides in + * structures in host DRAM, shared between the driver and the device. When + * allocating this memory, the driver must make sure that data written by + * the host CPU updates DRAM immediately (and does not get "stuck" in CPU's + * cache memory), so DRAM and cache are consistent, and the device can + * immediately see changes made by the driver. + * + * 4965 supports up to 16 DRAM-based Tx queues, and services these queues via + * up to 7 DMA channels (FIFOs). Each Tx queue is supported by a circular array + * in DRAM containing 256 Transmit Frame Descriptors (TFDs). + */ +#define IWL49_NUM_FIFOS 7 +#define IWL49_CMD_FIFO_NUM 4 +#define IWL49_NUM_QUEUES 16 +#define IWL49_NUM_AMPDU_QUEUES 8 + + +/** + * struct iwl4965_schedq_bc_tbl + * + * Byte Count table + * + * Each Tx queue uses a byte-count table containing 320 entries: + * one 16-bit entry for each of 256 TFDs, plus an additional 64 entries that + * duplicate the first 64 entries (to avoid wrap-around within a Tx window; + * max Tx window is 64 TFDs). + * + * When driver sets up a new TFD, it must also enter the total byte count + * of the frame to be transmitted into the corresponding entry in the byte + * count table for the chosen Tx queue. If the TFD index is 0-63, the driver + * must duplicate the byte count entry in corresponding index 256-319. + * + * padding puts each byte count table on a 1024-byte boundary; + * 4965 assumes tables are separated by 1024 bytes. + */ +struct iwl4965_scd_bc_tbl { + __le16 tfd_offset[TFD_QUEUE_BC_SIZE]; + u8 pad[1024 - (TFD_QUEUE_BC_SIZE) * sizeof(__le16)]; +} __packed; + +#endif /* !__iwl_4965_hw_h__ */ diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c new file mode 100644 index 000000000000..8998ed134d1a --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -0,0 +1,2666 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/sched.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/wireless.h> +#include <net/mac80211.h> +#include <linux/etherdevice.h> +#include <asm/unaligned.h> + +#include "iwl-eeprom.h" +#include "iwl-dev.h" +#include "iwl-core.h" +#include "iwl-io.h" +#include "iwl-helpers.h" +#include "iwl-agn-calib.h" +#include "iwl-sta.h" +#include "iwl-agn-led.h" +#include "iwl-agn.h" +#include "iwl-agn-debugfs.h" +#include "iwl-legacy.h" + +static int iwl4965_send_tx_power(struct iwl_priv *priv); +static int iwl4965_hw_get_temperature(struct iwl_priv *priv); + +/* Highest firmware API version supported */ +#define IWL4965_UCODE_API_MAX 2 + +/* Lowest firmware API version supported */ +#define IWL4965_UCODE_API_MIN 2 + +#define IWL4965_FW_PRE "iwlwifi-4965-" +#define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode" +#define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api) + +/* check contents of special bootstrap uCode SRAM */ +static int iwl4965_verify_bsm(struct iwl_priv *priv) +{ + __le32 *image = priv->ucode_boot.v_addr; + u32 len = priv->ucode_boot.len; + u32 reg; + u32 val; + + IWL_DEBUG_INFO(priv, "Begin verify bsm\n"); + + /* verify BSM SRAM contents */ + val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG); + for (reg = BSM_SRAM_LOWER_BOUND; + reg < BSM_SRAM_LOWER_BOUND + len; + reg += sizeof(u32), image++) { + val = iwl_read_prph(priv, reg); + if (val != le32_to_cpu(*image)) { + IWL_ERR(priv, "BSM uCode verification failed at " + "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", + BSM_SRAM_LOWER_BOUND, + reg - BSM_SRAM_LOWER_BOUND, len, + val, le32_to_cpu(*image)); + return -EIO; + } + } + + IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n"); + + return 0; +} + +/** + * iwl4965_load_bsm - Load bootstrap instructions + * + * BSM operation: + * + * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program + * in special SRAM that does not power down during RFKILL. When powering back + * up after power-saving sleeps (or during initial uCode load), the BSM loads + * the bootstrap program into the on-board processor, and starts it. + * + * The bootstrap program loads (via DMA) instructions and data for a new + * program from host DRAM locations indicated by the host driver in the + * BSM_DRAM_* registers. Once the new program is loaded, it starts + * automatically. + * + * When initializing the NIC, the host driver points the BSM to the + * "initialize" uCode image. This uCode sets up some internal data, then + * notifies host via "initialize alive" that it is complete. + * + * The host then replaces the BSM_DRAM_* pointer values to point to the + * normal runtime uCode instructions and a backup uCode data cache buffer + * (filled initially with starting data values for the on-board processor), + * then triggers the "initialize" uCode to load and launch the runtime uCode, + * which begins normal operation. + * + * When doing a power-save shutdown, runtime uCode saves data SRAM into + * the backup data cache in DRAM before SRAM is powered down. + * + * When powering back up, the BSM loads the bootstrap program. This reloads + * the runtime uCode instructions and the backup data cache into SRAM, + * and re-launches the runtime uCode from where it left off. + */ +static int iwl4965_load_bsm(struct iwl_priv *priv) +{ + __le32 *image = priv->ucode_boot.v_addr; + u32 len = priv->ucode_boot.len; + dma_addr_t pinst; + dma_addr_t pdata; + u32 inst_len; + u32 data_len; + int i; + u32 done; + u32 reg_offset; + int ret; + + IWL_DEBUG_INFO(priv, "Begin load bsm\n"); + + priv->ucode_type = UCODE_RT; + + /* make sure bootstrap program is no larger than BSM's SRAM size */ + if (len > IWL49_MAX_BSM_SIZE) + return -EINVAL; + + /* Tell bootstrap uCode where to find the "Initialize" uCode + * in host DRAM ... host DRAM physical address bits 35:4 for 4965. + * NOTE: iwl_init_alive_start() will replace these values, + * after the "initialize" uCode has run, to point to + * runtime/protocol instructions and backup data cache. + */ + pinst = priv->ucode_init.p_addr >> 4; + pdata = priv->ucode_init_data.p_addr >> 4; + inst_len = priv->ucode_init.len; + data_len = priv->ucode_init_data.len; + + iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); + iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); + iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); + iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); + + /* Fill BSM memory with bootstrap instructions */ + for (reg_offset = BSM_SRAM_LOWER_BOUND; + reg_offset < BSM_SRAM_LOWER_BOUND + len; + reg_offset += sizeof(u32), image++) + _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image)); + + ret = iwl4965_verify_bsm(priv); + if (ret) + return ret; + + /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ + iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0); + iwl_write_prph(priv, BSM_WR_MEM_DST_REG, IWL49_RTC_INST_LOWER_BOUND); + iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); + + /* Load bootstrap code into instruction SRAM now, + * to prepare to load "initialize" uCode */ + iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START); + + /* Wait for load of bootstrap uCode to finish */ + for (i = 0; i < 100; i++) { + done = iwl_read_prph(priv, BSM_WR_CTRL_REG); + if (!(done & BSM_WR_CTRL_REG_BIT_START)) + break; + udelay(10); + } + if (i < 100) + IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i); + else { + IWL_ERR(priv, "BSM write did not complete!\n"); + return -EIO; + } + + /* Enable future boot loads whenever power management unit triggers it + * (e.g. when powering back up after power-save shutdown) */ + iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN); + + + return 0; +} + +/** + * iwl4965_set_ucode_ptrs - Set uCode address location + * + * Tell initialization uCode where to find runtime uCode. + * + * BSM registers initially contain pointers to initialization uCode. + * We need to replace them to load runtime uCode inst and data, + * and to save runtime data when powering down. + */ +static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv) +{ + dma_addr_t pinst; + dma_addr_t pdata; + int ret = 0; + + /* bits 35:4 for 4965 */ + pinst = priv->ucode_code.p_addr >> 4; + pdata = priv->ucode_data_backup.p_addr >> 4; + + /* Tell bootstrap uCode where to find image to load */ + iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); + iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); + iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, + priv->ucode_data.len); + + /* Inst byte count must be last to set up, bit 31 signals uCode + * that all new ptr/size info is in place */ + iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, + priv->ucode_code.len | BSM_DRAM_INST_LOAD); + IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n"); + + return ret; +} + +/** + * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received + * + * Called after REPLY_ALIVE notification received from "initialize" uCode. + * + * The 4965 "initialize" ALIVE reply contains calibration data for: + * Voltage, temperature, and MIMO tx gain correction, now stored in priv + * (3945 does not contain this data). + * + * Tell "initialize" uCode to go ahead and load the runtime uCode. +*/ +static void iwl4965_init_alive_start(struct iwl_priv *priv) +{ + /* Bootstrap uCode has loaded initialize uCode ... verify inst image. + * This is a paranoid check, because we would not have gotten the + * "initialize" alive if code weren't properly loaded. */ + if (iwl_verify_ucode(priv)) { + /* Runtime instruction load was bad; + * take it all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n"); + goto restart; + } + + /* Calculate temperature */ + priv->temperature = iwl4965_hw_get_temperature(priv); + + /* Send pointers to protocol/runtime uCode image ... init code will + * load and launch runtime uCode, which will send us another "Alive" + * notification. */ + IWL_DEBUG_INFO(priv, "Initialization Alive received.\n"); + if (iwl4965_set_ucode_ptrs(priv)) { + /* Runtime instruction load won't happen; + * take it all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n"); + goto restart; + } + return; + +restart: + queue_work(priv->workqueue, &priv->restart); +} + +static bool is_ht40_channel(__le32 rxon_flags) +{ + int chan_mod = le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK) + >> RXON_FLG_CHANNEL_MODE_POS; + return ((chan_mod == CHANNEL_MODE_PURE_40) || + (chan_mod == CHANNEL_MODE_MIXED)); +} + +/* + * EEPROM handlers + */ +static u16 iwl4965_eeprom_calib_version(struct iwl_priv *priv) +{ + return iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET); +} + +/* + * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask + * must be called under priv->lock and mac access + */ +static void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask) +{ + iwl_write_prph(priv, IWL49_SCD_TXFACT, mask); +} + +static void iwl4965_nic_config(struct iwl_priv *priv) +{ + unsigned long flags; + u16 radio_cfg; + + spin_lock_irqsave(&priv->lock, flags); + + radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG); + + /* write radio config values to register */ + if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX) + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + EEPROM_RF_CFG_TYPE_MSK(radio_cfg) | + EEPROM_RF_CFG_STEP_MSK(radio_cfg) | + EEPROM_RF_CFG_DASH_MSK(radio_cfg)); + + /* set CSR_HW_CONFIG_REG for uCode use */ + iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, + CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | + CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); + + priv->calib_info = (struct iwl_eeprom_calib_info *) + iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET); + + spin_unlock_irqrestore(&priv->lock, flags); +} + +/* Reset differential Rx gains in NIC to prepare for chain noise calibration. + * Called after every association, but this runs only once! + * ... once chain noise is calibrated the first time, it's good forever. */ +static void iwl4965_chain_noise_reset(struct iwl_priv *priv) +{ + struct iwl_chain_noise_data *data = &(priv->chain_noise_data); + + if ((data->state == IWL_CHAIN_NOISE_ALIVE) && + iwl_is_any_associated(priv)) { + struct iwl_calib_diff_gain_cmd cmd; + + /* clear data for chain noise calibration algorithm */ + data->chain_noise_a = 0; + data->chain_noise_b = 0; + data->chain_noise_c = 0; + data->chain_signal_a = 0; + data->chain_signal_b = 0; + data->chain_signal_c = 0; + data->beacon_count = 0; + + memset(&cmd, 0, sizeof(cmd)); + cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD; + cmd.diff_gain_a = 0; + cmd.diff_gain_b = 0; + cmd.diff_gain_c = 0; + if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, + sizeof(cmd), &cmd)) + IWL_ERR(priv, + "Could not send REPLY_PHY_CALIBRATION_CMD\n"); + data->state = IWL_CHAIN_NOISE_ACCUMULATE; + IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n"); + } +} + +static void iwl4965_gain_computation(struct iwl_priv *priv, + u32 *average_noise, + u16 min_average_noise_antenna_i, + u32 min_average_noise, + u8 default_chain) +{ + int i, ret; + struct iwl_chain_noise_data *data = &priv->chain_noise_data; + + data->delta_gain_code[min_average_noise_antenna_i] = 0; + + for (i = default_chain; i < NUM_RX_CHAINS; i++) { + s32 delta_g = 0; + + if (!(data->disconn_array[i]) && + (data->delta_gain_code[i] == + CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) { + delta_g = average_noise[i] - min_average_noise; + data->delta_gain_code[i] = (u8)((delta_g * 10) / 15); + data->delta_gain_code[i] = + min(data->delta_gain_code[i], + (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE); + + data->delta_gain_code[i] = + (data->delta_gain_code[i] | (1 << 2)); + } else { + data->delta_gain_code[i] = 0; + } + } + IWL_DEBUG_CALIB(priv, "delta_gain_codes: a %d b %d c %d\n", + data->delta_gain_code[0], + data->delta_gain_code[1], + data->delta_gain_code[2]); + + /* Differential gain gets sent to uCode only once */ + if (!data->radio_write) { + struct iwl_calib_diff_gain_cmd cmd; + data->radio_write = 1; + + memset(&cmd, 0, sizeof(cmd)); + cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD; + cmd.diff_gain_a = data->delta_gain_code[0]; + cmd.diff_gain_b = data->delta_gain_code[1]; + cmd.diff_gain_c = data->delta_gain_code[2]; + ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, + sizeof(cmd), &cmd); + if (ret) + IWL_DEBUG_CALIB(priv, "fail sending cmd " + "REPLY_PHY_CALIBRATION_CMD\n"); + + /* TODO we might want recalculate + * rx_chain in rxon cmd */ + + /* Mark so we run this algo only once! */ + data->state = IWL_CHAIN_NOISE_CALIBRATED; + } +} + +static void iwl4965_bg_txpower_work(struct work_struct *work) +{ + struct iwl_priv *priv = container_of(work, struct iwl_priv, + txpower_work); + + /* If a scan happened to start before we got here + * then just return; the statistics notification will + * kick off another scheduled work to compensate for + * any temperature delta we missed here. */ + if (test_bit(STATUS_EXIT_PENDING, &priv->status) || + test_bit(STATUS_SCANNING, &priv->status)) + return; + + mutex_lock(&priv->mutex); + + /* Regardless of if we are associated, we must reconfigure the + * TX power since frames can be sent on non-radar channels while + * not associated */ + iwl4965_send_tx_power(priv); + + /* Update last_temperature to keep is_calib_needed from running + * when it isn't needed... */ + priv->last_temperature = priv->temperature; + + mutex_unlock(&priv->mutex); +} + +/* + * Acquire priv->lock before calling this function ! + */ +static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index) +{ + iwl_write_direct32(priv, HBUS_TARG_WRPTR, + (index & 0xff) | (txq_id << 8)); + iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index); +} + +/** + * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue + * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed + * @scd_retry: (1) Indicates queue will be used in aggregation mode + * + * NOTE: Acquire priv->lock before calling this function ! + */ +static void iwl4965_tx_queue_set_status(struct iwl_priv *priv, + struct iwl_tx_queue *txq, + int tx_fifo_id, int scd_retry) +{ + int txq_id = txq->q.id; + + /* Find out whether to activate Tx queue */ + int active = test_bit(txq_id, &priv->txq_ctx_active_msk) ? 1 : 0; + + /* Set up and activate */ + iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id), + (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) | + (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) | + (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) | + (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) | + IWL49_SCD_QUEUE_STTS_REG_MSK); + + txq->sched_retry = scd_retry; + + IWL_DEBUG_INFO(priv, "%s %s Queue %d on AC %d\n", + active ? "Activate" : "Deactivate", + scd_retry ? "BA" : "AC", txq_id, tx_fifo_id); +} + +static const s8 default_queue_to_tx_fifo[] = { + IWL_TX_FIFO_VO, + IWL_TX_FIFO_VI, + IWL_TX_FIFO_BE, + IWL_TX_FIFO_BK, + IWL49_CMD_FIFO_NUM, + IWL_TX_FIFO_UNUSED, + IWL_TX_FIFO_UNUSED, +}; + +static int iwl4965_alive_notify(struct iwl_priv *priv) +{ + u32 a; + unsigned long flags; + int i, chan; + u32 reg_val; + + spin_lock_irqsave(&priv->lock, flags); + + /* Clear 4965's internal Tx Scheduler data base */ + priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR); + a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET; + for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4) + iwl_write_targ_mem(priv, a, 0); + for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4) + iwl_write_targ_mem(priv, a, 0); + for (; a < priv->scd_base_addr + + IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(priv->hw_params.max_txq_num); a += 4) + iwl_write_targ_mem(priv, a, 0); + + /* Tel 4965 where to find Tx byte count tables */ + iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR, + priv->scd_bc_tbls.dma >> 10); + + /* Enable DMA channel */ + for (chan = 0; chan < FH49_TCSR_CHNL_NUM ; chan++) + iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(chan), + FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | + FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE); + + /* Update FH chicken bits */ + reg_val = iwl_read_direct32(priv, FH_TX_CHICKEN_BITS_REG); + iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG, + reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN); + + /* Disable chain mode for all queues */ + iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0); + + /* Initialize each Tx queue (including the command queue) */ + for (i = 0; i < priv->hw_params.max_txq_num; i++) { + + /* TFD circular buffer read/write indexes */ + iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0); + iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); + + /* Max Tx Window size for Scheduler-ACK mode */ + iwl_write_targ_mem(priv, priv->scd_base_addr + + IWL49_SCD_CONTEXT_QUEUE_OFFSET(i), + (SCD_WIN_SIZE << + IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & + IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); + + /* Frame limit */ + iwl_write_targ_mem(priv, priv->scd_base_addr + + IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) + + sizeof(u32), + (SCD_FRAME_LIMIT << + IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & + IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); + + } + iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK, + (1 << priv->hw_params.max_txq_num) - 1); + + /* Activate all Tx DMA/FIFO channels */ + priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 6)); + + iwl4965_set_wr_ptrs(priv, IWL_DEFAULT_CMD_QUEUE_NUM, 0); + + /* make sure all queue are not stopped */ + memset(&priv->queue_stopped[0], 0, sizeof(priv->queue_stopped)); + for (i = 0; i < 4; i++) + atomic_set(&priv->queue_stop_count[i], 0); + + /* reset to 0 to enable all the queue first */ + priv->txq_ctx_active_msk = 0; + /* Map each Tx/cmd queue to its corresponding fifo */ + BUILD_BUG_ON(ARRAY_SIZE(default_queue_to_tx_fifo) != 7); + + for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) { + int ac = default_queue_to_tx_fifo[i]; + + iwl_txq_ctx_activate(priv, i); + + if (ac == IWL_TX_FIFO_UNUSED) + continue; + + iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0); + } + + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + +static struct iwl_sensitivity_ranges iwl4965_sensitivity = { + .min_nrg_cck = 97, + .max_nrg_cck = 0, /* not used, set to 0 */ + + .auto_corr_min_ofdm = 85, + .auto_corr_min_ofdm_mrc = 170, + .auto_corr_min_ofdm_x1 = 105, + .auto_corr_min_ofdm_mrc_x1 = 220, + + .auto_corr_max_ofdm = 120, + .auto_corr_max_ofdm_mrc = 210, + .auto_corr_max_ofdm_x1 = 140, + .auto_corr_max_ofdm_mrc_x1 = 270, + + .auto_corr_min_cck = 125, + .auto_corr_max_cck = 200, + .auto_corr_min_cck_mrc = 200, + .auto_corr_max_cck_mrc = 400, + + .nrg_th_cck = 100, + .nrg_th_ofdm = 100, + + .barker_corr_th_min = 190, + .barker_corr_th_min_mrc = 390, + .nrg_th_cca = 62, +}; + +static void iwl4965_set_ct_threshold(struct iwl_priv *priv) +{ + /* want Kelvin */ + priv->hw_params.ct_kill_threshold = + CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY); +} + +/** + * iwl4965_hw_set_hw_params + * + * Called when initializing driver + */ +static int iwl4965_hw_set_hw_params(struct iwl_priv *priv) +{ + if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES && + priv->cfg->mod_params->num_of_queues <= IWL49_NUM_QUEUES) + priv->cfg->base_params->num_of_queues = + priv->cfg->mod_params->num_of_queues; + + priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues; + priv->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM; + priv->hw_params.scd_bc_tbls_size = + priv->cfg->base_params->num_of_queues * + sizeof(struct iwl4965_scd_bc_tbl); + priv->hw_params.tfd_size = sizeof(struct iwl_tfd); + priv->hw_params.max_stations = IWL4965_STATION_COUNT; + priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWL4965_BROADCAST_ID; + priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE; + priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE; + priv->hw_params.max_bsm_size = BSM_SRAM_SIZE; + priv->hw_params.ht40_channel = BIT(IEEE80211_BAND_5GHZ); + + priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR; + + priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant); + priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant); + priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant; + priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant; + + iwl4965_set_ct_threshold(priv); + + priv->hw_params.sens = &iwl4965_sensitivity; + priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS; + + return 0; +} + +static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res) +{ + s32 sign = 1; + + if (num < 0) { + sign = -sign; + num = -num; + } + if (denom < 0) { + sign = -sign; + denom = -denom; + } + *res = 1; + *res = ((num * 2 + denom) / (denom * 2)) * sign; + + return 1; +} + +/** + * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower + * + * Determines power supply voltage compensation for txpower calculations. + * Returns number of 1/2-dB steps to subtract from gain table index, + * to compensate for difference between power supply voltage during + * factory measurements, vs. current power supply voltage. + * + * Voltage indication is higher for lower voltage. + * Lower voltage requires more gain (lower gain table index). + */ +static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage, + s32 current_voltage) +{ + s32 comp = 0; + + if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) || + (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage)) + return 0; + + iwl4965_math_div_round(current_voltage - eeprom_voltage, + TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp); + + if (current_voltage > eeprom_voltage) + comp *= 2; + if ((comp < -2) || (comp > 2)) + comp = 0; + + return comp; +} + +static s32 iwl4965_get_tx_atten_grp(u16 channel) +{ + if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH && + channel <= CALIB_IWL_TX_ATTEN_GR5_LCH) + return CALIB_CH_GROUP_5; + + if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH && + channel <= CALIB_IWL_TX_ATTEN_GR1_LCH) + return CALIB_CH_GROUP_1; + + if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH && + channel <= CALIB_IWL_TX_ATTEN_GR2_LCH) + return CALIB_CH_GROUP_2; + + if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH && + channel <= CALIB_IWL_TX_ATTEN_GR3_LCH) + return CALIB_CH_GROUP_3; + + if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH && + channel <= CALIB_IWL_TX_ATTEN_GR4_LCH) + return CALIB_CH_GROUP_4; + + return -1; +} + +static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel) +{ + s32 b = -1; + + for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) { + if (priv->calib_info->band_info[b].ch_from == 0) + continue; + + if ((channel >= priv->calib_info->band_info[b].ch_from) + && (channel <= priv->calib_info->band_info[b].ch_to)) + break; + } + + return b; +} + +static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2) +{ + s32 val; + + if (x2 == x1) + return y1; + else { + iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val); + return val + y2; + } +} + +/** + * iwl4965_interpolate_chan - Interpolate factory measurements for one channel + * + * Interpolates factory measurements from the two sample channels within a + * sub-band, to apply to channel of interest. Interpolation is proportional to + * differences in channel frequencies, which is proportional to differences + * in channel number. + */ +static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel, + struct iwl_eeprom_calib_ch_info *chan_info) +{ + s32 s = -1; + u32 c; + u32 m; + const struct iwl_eeprom_calib_measure *m1; + const struct iwl_eeprom_calib_measure *m2; + struct iwl_eeprom_calib_measure *omeas; + u32 ch_i1; + u32 ch_i2; + + s = iwl4965_get_sub_band(priv, channel); + if (s >= EEPROM_TX_POWER_BANDS) { + IWL_ERR(priv, "Tx Power can not find channel %d\n", channel); + return -1; + } + + ch_i1 = priv->calib_info->band_info[s].ch1.ch_num; + ch_i2 = priv->calib_info->band_info[s].ch2.ch_num; + chan_info->ch_num = (u8) channel; + + IWL_DEBUG_TXPOWER(priv, "channel %d subband %d factory cal ch %d & %d\n", + channel, s, ch_i1, ch_i2); + + for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) { + for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) { + m1 = &(priv->calib_info->band_info[s].ch1. + measurements[c][m]); + m2 = &(priv->calib_info->band_info[s].ch2. + measurements[c][m]); + omeas = &(chan_info->measurements[c][m]); + + omeas->actual_pow = + (u8) iwl4965_interpolate_value(channel, ch_i1, + m1->actual_pow, + ch_i2, + m2->actual_pow); + omeas->gain_idx = + (u8) iwl4965_interpolate_value(channel, ch_i1, + m1->gain_idx, ch_i2, + m2->gain_idx); + omeas->temperature = + (u8) iwl4965_interpolate_value(channel, ch_i1, + m1->temperature, + ch_i2, + m2->temperature); + omeas->pa_det = + (s8) iwl4965_interpolate_value(channel, ch_i1, + m1->pa_det, ch_i2, + m2->pa_det); + + IWL_DEBUG_TXPOWER(priv, + "chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m, + m1->actual_pow, m2->actual_pow, omeas->actual_pow); + IWL_DEBUG_TXPOWER(priv, + "chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m, + m1->gain_idx, m2->gain_idx, omeas->gain_idx); + IWL_DEBUG_TXPOWER(priv, + "chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m, + m1->pa_det, m2->pa_det, omeas->pa_det); + IWL_DEBUG_TXPOWER(priv, + "chain %d meas %d T1=%d T2=%d T=%d\n", c, m, + m1->temperature, m2->temperature, + omeas->temperature); + } + } + + return 0; +} + +/* bit-rate-dependent table to prevent Tx distortion, in half-dB units, + * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */ +static s32 back_off_table[] = { + 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */ + 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */ + 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */ + 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */ + 10 /* CCK */ +}; + +/* Thermal compensation values for txpower for various frequency ranges ... + * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */ +static struct iwl4965_txpower_comp_entry { + s32 degrees_per_05db_a; + s32 degrees_per_05db_a_denom; +} tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = { + {9, 2}, /* group 0 5.2, ch 34-43 */ + {4, 1}, /* group 1 5.2, ch 44-70 */ + {4, 1}, /* group 2 5.2, ch 71-124 */ + {4, 1}, /* group 3 5.2, ch 125-200 */ + {3, 1} /* group 4 2.4, ch all */ +}; + +static s32 get_min_power_index(s32 rate_power_index, u32 band) +{ + if (!band) { + if ((rate_power_index & 7) <= 4) + return MIN_TX_GAIN_INDEX_52GHZ_EXT; + } + return MIN_TX_GAIN_INDEX; +} + +struct gain_entry { + u8 dsp; + u8 radio; +}; + +static const struct gain_entry gain_table[2][108] = { + /* 5.2GHz power gain index table */ + { + {123, 0x3F}, /* highest txpower */ + {117, 0x3F}, + {110, 0x3F}, + {104, 0x3F}, + {98, 0x3F}, + {110, 0x3E}, + {104, 0x3E}, + {98, 0x3E}, + {110, 0x3D}, + {104, 0x3D}, + {98, 0x3D}, + {110, 0x3C}, + {104, 0x3C}, + {98, 0x3C}, + {110, 0x3B}, + {104, 0x3B}, + {98, 0x3B}, + {110, 0x3A}, + {104, 0x3A}, + {98, 0x3A}, + {110, 0x39}, + {104, 0x39}, + {98, 0x39}, + {110, 0x38}, + {104, 0x38}, + {98, 0x38}, + {110, 0x37}, + {104, 0x37}, + {98, 0x37}, + {110, 0x36}, + {104, 0x36}, + {98, 0x36}, + {110, 0x35}, + {104, 0x35}, + {98, 0x35}, + {110, 0x34}, + {104, 0x34}, + {98, 0x34}, + {110, 0x33}, + {104, 0x33}, + {98, 0x33}, + {110, 0x32}, + {104, 0x32}, + {98, 0x32}, + {110, 0x31}, + {104, 0x31}, + {98, 0x31}, + {110, 0x30}, + {104, 0x30}, + {98, 0x30}, + {110, 0x25}, + {104, 0x25}, + {98, 0x25}, + {110, 0x24}, + {104, 0x24}, + {98, 0x24}, + {110, 0x23}, + {104, 0x23}, + {98, 0x23}, + {110, 0x22}, + {104, 0x18}, + {98, 0x18}, + {110, 0x17}, + {104, 0x17}, + {98, 0x17}, + {110, 0x16}, + {104, 0x16}, + {98, 0x16}, + {110, 0x15}, + {104, 0x15}, + {98, 0x15}, + {110, 0x14}, + {104, 0x14}, + {98, 0x14}, + {110, 0x13}, + {104, 0x13}, + {98, 0x13}, + {110, 0x12}, + {104, 0x08}, + {98, 0x08}, + {110, 0x07}, + {104, 0x07}, + {98, 0x07}, + {110, 0x06}, + {104, 0x06}, + {98, 0x06}, + {110, 0x05}, + {104, 0x05}, + {98, 0x05}, + {110, 0x04}, + {104, 0x04}, + {98, 0x04}, + {110, 0x03}, + {104, 0x03}, + {98, 0x03}, + {110, 0x02}, + {104, 0x02}, + {98, 0x02}, + {110, 0x01}, + {104, 0x01}, + {98, 0x01}, + {110, 0x00}, + {104, 0x00}, + {98, 0x00}, + {93, 0x00}, + {88, 0x00}, + {83, 0x00}, + {78, 0x00}, + }, + /* 2.4GHz power gain index table */ + { + {110, 0x3f}, /* highest txpower */ + {104, 0x3f}, + {98, 0x3f}, + {110, 0x3e}, + {104, 0x3e}, + {98, 0x3e}, + {110, 0x3d}, + {104, 0x3d}, + {98, 0x3d}, + {110, 0x3c}, + {104, 0x3c}, + {98, 0x3c}, + {110, 0x3b}, + {104, 0x3b}, + {98, 0x3b}, + {110, 0x3a}, + {104, 0x3a}, + {98, 0x3a}, + {110, 0x39}, + {104, 0x39}, + {98, 0x39}, + {110, 0x38}, + {104, 0x38}, + {98, 0x38}, + {110, 0x37}, + {104, 0x37}, + {98, 0x37}, + {110, 0x36}, + {104, 0x36}, + {98, 0x36}, + {110, 0x35}, + {104, 0x35}, + {98, 0x35}, + {110, 0x34}, + {104, 0x34}, + {98, 0x34}, + {110, 0x33}, + {104, 0x33}, + {98, 0x33}, + {110, 0x32}, + {104, 0x32}, + {98, 0x32}, + {110, 0x31}, + {104, 0x31}, + {98, 0x31}, + {110, 0x30}, + {104, 0x30}, + {98, 0x30}, + {110, 0x6}, + {104, 0x6}, + {98, 0x6}, + {110, 0x5}, + {104, 0x5}, + {98, 0x5}, + {110, 0x4}, + {104, 0x4}, + {98, 0x4}, + {110, 0x3}, + {104, 0x3}, + {98, 0x3}, + {110, 0x2}, + {104, 0x2}, + {98, 0x2}, + {110, 0x1}, + {104, 0x1}, + {98, 0x1}, + {110, 0x0}, + {104, 0x0}, + {98, 0x0}, + {97, 0}, + {96, 0}, + {95, 0}, + {94, 0}, + {93, 0}, + {92, 0}, + {91, 0}, + {90, 0}, + {89, 0}, + {88, 0}, + {87, 0}, + {86, 0}, + {85, 0}, + {84, 0}, + {83, 0}, + {82, 0}, + {81, 0}, + {80, 0}, + {79, 0}, + {78, 0}, + {77, 0}, + {76, 0}, + {75, 0}, + {74, 0}, + {73, 0}, + {72, 0}, + {71, 0}, + {70, 0}, + {69, 0}, + {68, 0}, + {67, 0}, + {66, 0}, + {65, 0}, + {64, 0}, + {63, 0}, + {62, 0}, + {61, 0}, + {60, 0}, + {59, 0}, + } +}; + +static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel, + u8 is_ht40, u8 ctrl_chan_high, + struct iwl4965_tx_power_db *tx_power_tbl) +{ + u8 saturation_power; + s32 target_power; + s32 user_target_power; + s32 power_limit; + s32 current_temp; + s32 reg_limit; + s32 current_regulatory; + s32 txatten_grp = CALIB_CH_GROUP_MAX; + int i; + int c; + const struct iwl_channel_info *ch_info = NULL; + struct iwl_eeprom_calib_ch_info ch_eeprom_info; + const struct iwl_eeprom_calib_measure *measurement; + s16 voltage; + s32 init_voltage; + s32 voltage_compensation; + s32 degrees_per_05db_num; + s32 degrees_per_05db_denom; + s32 factory_temp; + s32 temperature_comp[2]; + s32 factory_gain_index[2]; + s32 factory_actual_pwr[2]; + s32 power_index; + + /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units + * are used for indexing into txpower table) */ + user_target_power = 2 * priv->tx_power_user_lmt; + + /* Get current (RXON) channel, band, width */ + IWL_DEBUG_TXPOWER(priv, "chan %d band %d is_ht40 %d\n", channel, band, + is_ht40); + + ch_info = iwl_get_channel_info(priv, priv->band, channel); + + if (!is_channel_valid(ch_info)) + return -EINVAL; + + /* get txatten group, used to select 1) thermal txpower adjustment + * and 2) mimo txpower balance between Tx chains. */ + txatten_grp = iwl4965_get_tx_atten_grp(channel); + if (txatten_grp < 0) { + IWL_ERR(priv, "Can't find txatten group for channel %d.\n", + channel); + return -EINVAL; + } + + IWL_DEBUG_TXPOWER(priv, "channel %d belongs to txatten group %d\n", + channel, txatten_grp); + + if (is_ht40) { + if (ctrl_chan_high) + channel -= 2; + else + channel += 2; + } + + /* hardware txpower limits ... + * saturation (clipping distortion) txpowers are in half-dBm */ + if (band) + saturation_power = priv->calib_info->saturation_power24; + else + saturation_power = priv->calib_info->saturation_power52; + + if (saturation_power < IWL_TX_POWER_SATURATION_MIN || + saturation_power > IWL_TX_POWER_SATURATION_MAX) { + if (band) + saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24; + else + saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52; + } + + /* regulatory txpower limits ... reg_limit values are in half-dBm, + * max_power_avg values are in dBm, convert * 2 */ + if (is_ht40) + reg_limit = ch_info->ht40_max_power_avg * 2; + else + reg_limit = ch_info->max_power_avg * 2; + + if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) || + (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) { + if (band) + reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24; + else + reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52; + } + + /* Interpolate txpower calibration values for this channel, + * based on factory calibration tests on spaced channels. */ + iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info); + + /* calculate tx gain adjustment based on power supply voltage */ + voltage = le16_to_cpu(priv->calib_info->voltage); + init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage); + voltage_compensation = + iwl4965_get_voltage_compensation(voltage, init_voltage); + + IWL_DEBUG_TXPOWER(priv, "curr volt %d eeprom volt %d volt comp %d\n", + init_voltage, + voltage, voltage_compensation); + + /* get current temperature (Celsius) */ + current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN); + current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX); + current_temp = KELVIN_TO_CELSIUS(current_temp); + + /* select thermal txpower adjustment params, based on channel group + * (same frequency group used for mimo txatten adjustment) */ + degrees_per_05db_num = + tx_power_cmp_tble[txatten_grp].degrees_per_05db_a; + degrees_per_05db_denom = + tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom; + + /* get per-chain txpower values from factory measurements */ + for (c = 0; c < 2; c++) { + measurement = &ch_eeprom_info.measurements[c][1]; + + /* txgain adjustment (in half-dB steps) based on difference + * between factory and current temperature */ + factory_temp = measurement->temperature; + iwl4965_math_div_round((current_temp - factory_temp) * + degrees_per_05db_denom, + degrees_per_05db_num, + &temperature_comp[c]); + + factory_gain_index[c] = measurement->gain_idx; + factory_actual_pwr[c] = measurement->actual_pow; + + IWL_DEBUG_TXPOWER(priv, "chain = %d\n", c); + IWL_DEBUG_TXPOWER(priv, "fctry tmp %d, " + "curr tmp %d, comp %d steps\n", + factory_temp, current_temp, + temperature_comp[c]); + + IWL_DEBUG_TXPOWER(priv, "fctry idx %d, fctry pwr %d\n", + factory_gain_index[c], + factory_actual_pwr[c]); + } + + /* for each of 33 bit-rates (including 1 for CCK) */ + for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) { + u8 is_mimo_rate; + union iwl4965_tx_power_dual_stream tx_power; + + /* for mimo, reduce each chain's txpower by half + * (3dB, 6 steps), so total output power is regulatory + * compliant. */ + if (i & 0x8) { + current_regulatory = reg_limit - + IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION; + is_mimo_rate = 1; + } else { + current_regulatory = reg_limit; + is_mimo_rate = 0; + } + + /* find txpower limit, either hardware or regulatory */ + power_limit = saturation_power - back_off_table[i]; + if (power_limit > current_regulatory) + power_limit = current_regulatory; + + /* reduce user's txpower request if necessary + * for this rate on this channel */ + target_power = user_target_power; + if (target_power > power_limit) + target_power = power_limit; + + IWL_DEBUG_TXPOWER(priv, "rate %d sat %d reg %d usr %d tgt %d\n", + i, saturation_power - back_off_table[i], + current_regulatory, user_target_power, + target_power); + + /* for each of 2 Tx chains (radio transmitters) */ + for (c = 0; c < 2; c++) { + s32 atten_value; + + if (is_mimo_rate) + atten_value = + (s32)le32_to_cpu(priv->card_alive_init. + tx_atten[txatten_grp][c]); + else + atten_value = 0; + + /* calculate index; higher index means lower txpower */ + power_index = (u8) (factory_gain_index[c] - + (target_power - + factory_actual_pwr[c]) - + temperature_comp[c] - + voltage_compensation + + atten_value); + +/* IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n", + power_index); */ + + if (power_index < get_min_power_index(i, band)) + power_index = get_min_power_index(i, band); + + /* adjust 5 GHz index to support negative indexes */ + if (!band) + power_index += 9; + + /* CCK, rate 32, reduce txpower for CCK */ + if (i == POWER_TABLE_CCK_ENTRY) + power_index += + IWL_TX_POWER_CCK_COMPENSATION_C_STEP; + + /* stay within the table! */ + if (power_index > 107) { + IWL_WARN(priv, "txpower index %d > 107\n", + power_index); + power_index = 107; + } + if (power_index < 0) { + IWL_WARN(priv, "txpower index %d < 0\n", + power_index); + power_index = 0; + } + + /* fill txpower command for this rate/chain */ + tx_power.s.radio_tx_gain[c] = + gain_table[band][power_index].radio; + tx_power.s.dsp_predis_atten[c] = + gain_table[band][power_index].dsp; + + IWL_DEBUG_TXPOWER(priv, "chain %d mimo %d index %d " + "gain 0x%02x dsp %d\n", + c, atten_value, power_index, + tx_power.s.radio_tx_gain[c], + tx_power.s.dsp_predis_atten[c]); + } /* for each chain */ + + tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw); + + } /* for each rate */ + + return 0; +} + +/** + * iwl4965_send_tx_power - Configure the TXPOWER level user limit + * + * Uses the active RXON for channel, band, and characteristics (ht40, high) + * The power limit is taken from priv->tx_power_user_lmt. + */ +static int iwl4965_send_tx_power(struct iwl_priv *priv) +{ + struct iwl4965_txpowertable_cmd cmd = { 0 }; + int ret; + u8 band = 0; + bool is_ht40 = false; + u8 ctrl_chan_high = 0; + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status), + "TX Power requested while scanning!\n")) + return -EAGAIN; + + band = priv->band == IEEE80211_BAND_2GHZ; + + is_ht40 = is_ht40_channel(ctx->active.flags); + + if (is_ht40 && (ctx->active.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK)) + ctrl_chan_high = 1; + + cmd.band = band; + cmd.channel = ctx->active.channel; + + ret = iwl4965_fill_txpower_tbl(priv, band, + le16_to_cpu(ctx->active.channel), + is_ht40, ctrl_chan_high, &cmd.tx_power); + if (ret) + goto out; + + ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd); + +out: + return ret; +} + +static int iwl4965_send_rxon_assoc(struct iwl_priv *priv, + struct iwl_rxon_context *ctx) +{ + int ret = 0; + struct iwl4965_rxon_assoc_cmd rxon_assoc; + const struct iwl_rxon_cmd *rxon1 = &ctx->staging; + const struct iwl_rxon_cmd *rxon2 = &ctx->active; + + if ((rxon1->flags == rxon2->flags) && + (rxon1->filter_flags == rxon2->filter_flags) && + (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && + (rxon1->ofdm_ht_single_stream_basic_rates == + rxon2->ofdm_ht_single_stream_basic_rates) && + (rxon1->ofdm_ht_dual_stream_basic_rates == + rxon2->ofdm_ht_dual_stream_basic_rates) && + (rxon1->rx_chain == rxon2->rx_chain) && + (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { + IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); + return 0; + } + + rxon_assoc.flags = ctx->staging.flags; + rxon_assoc.filter_flags = ctx->staging.filter_flags; + rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates; + rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates; + rxon_assoc.reserved = 0; + rxon_assoc.ofdm_ht_single_stream_basic_rates = + ctx->staging.ofdm_ht_single_stream_basic_rates; + rxon_assoc.ofdm_ht_dual_stream_basic_rates = + ctx->staging.ofdm_ht_dual_stream_basic_rates; + rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain; + + ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC, + sizeof(rxon_assoc), &rxon_assoc, NULL); + if (ret) + return ret; + + return ret; +} + +static int iwl4965_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx) +{ + /* cast away the const for active_rxon in this function */ + struct iwl_rxon_cmd *active_rxon = (void *)&ctx->active; + int ret; + bool new_assoc = + !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK); + + if (!iwl_is_alive(priv)) + return -EBUSY; + + if (!ctx->is_active) + return 0; + + /* always get timestamp with Rx frame */ + ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK; + + ret = iwl_check_rxon_cmd(priv, ctx); + if (ret) { + IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); + return -EINVAL; + } + + /* + * receive commit_rxon request + * abort any previous channel switch if still in process + */ + if (priv->switch_rxon.switch_in_progress && + (priv->switch_rxon.channel != ctx->staging.channel)) { + IWL_DEBUG_11H(priv, "abort channel switch on %d\n", + le16_to_cpu(priv->switch_rxon.channel)); + iwl_chswitch_done(priv, false); + } + + /* If we don't need to send a full RXON, we can use + * iwl_rxon_assoc_cmd which is used to reconfigure filter + * and other flags for the current radio configuration. */ + if (!iwl_full_rxon_required(priv, ctx)) { + ret = iwl_send_rxon_assoc(priv, ctx); + if (ret) { + IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret); + return ret; + } + + memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon)); + iwl_print_rx_config_cmd(priv, ctx); + return 0; + } + + /* If we are currently associated and the new config requires + * an RXON_ASSOC and the new config wants the associated mask enabled, + * we must clear the associated from the active configuration + * before we apply the new config */ + if (iwl_is_associated_ctx(ctx) && new_assoc) { + IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n"); + active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; + + ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, + sizeof(struct iwl_rxon_cmd), + active_rxon); + + /* If the mask clearing failed then we set + * active_rxon back to what it was previously */ + if (ret) { + active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; + IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret); + return ret; + } + iwl_clear_ucode_stations(priv, ctx); + iwl_restore_stations(priv, ctx); + ret = iwl_restore_default_wep_keys(priv, ctx); + if (ret) { + IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret); + return ret; + } + } + + IWL_DEBUG_INFO(priv, "Sending RXON\n" + "* with%s RXON_FILTER_ASSOC_MSK\n" + "* channel = %d\n" + "* bssid = %pM\n", + (new_assoc ? "" : "out"), + le16_to_cpu(ctx->staging.channel), + ctx->staging.bssid_addr); + + iwl_set_rxon_hwcrypto(priv, ctx, !priv->cfg->mod_params->sw_crypto); + + /* Apply the new configuration + * RXON unassoc clears the station table in uCode so restoration of + * stations is needed after it (the RXON command) completes + */ + if (!new_assoc) { + ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, + sizeof(struct iwl_rxon_cmd), &ctx->staging); + if (ret) { + IWL_ERR(priv, "Error setting new RXON (%d)\n", ret); + return ret; + } + IWL_DEBUG_INFO(priv, "Return from !new_assoc RXON.\n"); + memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon)); + iwl_clear_ucode_stations(priv, ctx); + iwl_restore_stations(priv, ctx); + ret = iwl_restore_default_wep_keys(priv, ctx); + if (ret) { + IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret); + return ret; + } + } + if (new_assoc) { + priv->start_calib = 0; + /* Apply the new configuration + * RXON assoc doesn't clear the station table in uCode, + */ + ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, + sizeof(struct iwl_rxon_cmd), &ctx->staging); + if (ret) { + IWL_ERR(priv, "Error setting new RXON (%d)\n", ret); + return ret; + } + memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon)); + } + iwl_print_rx_config_cmd(priv, ctx); + + iwl_init_sensitivity(priv); + + /* If we issue a new RXON command which required a tune then we must + * send a new TXPOWER command or we won't be able to Tx any frames */ + ret = iwl_set_tx_power(priv, priv->tx_power_next, true); + if (ret) { + IWL_ERR(priv, "Error sending TX power (%d)\n", ret); + return ret; + } + + return 0; +} + +static int iwl4965_hw_channel_switch(struct iwl_priv *priv, + struct ieee80211_channel_switch *ch_switch) +{ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + int rc; + u8 band = 0; + bool is_ht40 = false; + u8 ctrl_chan_high = 0; + struct iwl4965_channel_switch_cmd cmd; + const struct iwl_channel_info *ch_info; + u32 switch_time_in_usec, ucode_switch_time; + u16 ch; + u32 tsf_low; + u8 switch_count; + u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval); + struct ieee80211_vif *vif = ctx->vif; + band = priv->band == IEEE80211_BAND_2GHZ; + + is_ht40 = is_ht40_channel(ctx->staging.flags); + + if (is_ht40 && + (ctx->staging.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK)) + ctrl_chan_high = 1; + + cmd.band = band; + cmd.expect_beacon = 0; + ch = ch_switch->channel->hw_value; + cmd.channel = cpu_to_le16(ch); + cmd.rxon_flags = ctx->staging.flags; + cmd.rxon_filter_flags = ctx->staging.filter_flags; + switch_count = ch_switch->count; + tsf_low = ch_switch->timestamp & 0x0ffffffff; + /* + * calculate the ucode channel switch time + * adding TSF as one of the factor for when to switch + */ + if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) { + if (switch_count > ((priv->ucode_beacon_time - tsf_low) / + beacon_interval)) { + switch_count -= (priv->ucode_beacon_time - + tsf_low) / beacon_interval; + } else + switch_count = 0; + } + if (switch_count <= 1) + cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time); + else { + switch_time_in_usec = + vif->bss_conf.beacon_int * switch_count * TIME_UNIT; + ucode_switch_time = iwl_usecs_to_beacons(priv, + switch_time_in_usec, + beacon_interval); + cmd.switch_time = iwl_add_beacon_time(priv, + priv->ucode_beacon_time, + ucode_switch_time, + beacon_interval); + } + IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n", + cmd.switch_time); + ch_info = iwl_get_channel_info(priv, priv->band, ch); + if (ch_info) + cmd.expect_beacon = is_channel_radar(ch_info); + else { + IWL_ERR(priv, "invalid channel switch from %u to %u\n", + ctx->active.channel, ch); + return -EFAULT; + } + + rc = iwl4965_fill_txpower_tbl(priv, band, ch, is_ht40, + ctrl_chan_high, &cmd.tx_power); + if (rc) { + IWL_DEBUG_11H(priv, "error:%d fill txpower_tbl\n", rc); + return rc; + } + + priv->switch_rxon.channel = cmd.channel; + priv->switch_rxon.switch_in_progress = true; + + return iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd); +} + +/** + * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array + */ +static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv, + struct iwl_tx_queue *txq, + u16 byte_cnt) +{ + struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr; + int txq_id = txq->q.id; + int write_ptr = txq->q.write_ptr; + int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE; + __le16 bc_ent; + + WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX); + + bc_ent = cpu_to_le16(len & 0xFFF); + /* Set up byte count within first 256 entries */ + scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent; + + /* If within first 64 entries, duplicate at end */ + if (write_ptr < TFD_QUEUE_SIZE_BC_DUP) + scd_bc_tbl[txq_id]. + tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent; +} + +/** + * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin) + * @statistics: Provides the temperature reading from the uCode + * + * A return of <0 indicates bogus data in the statistics + */ +static int iwl4965_hw_get_temperature(struct iwl_priv *priv) +{ + s32 temperature; + s32 vt; + s32 R1, R2, R3; + u32 R4; + + if (test_bit(STATUS_TEMPERATURE, &priv->status) && + (priv->_agn.statistics.flag & + STATISTICS_REPLY_FLG_HT40_MODE_MSK)) { + IWL_DEBUG_TEMP(priv, "Running HT40 temperature calibration\n"); + R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]); + R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]); + R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]); + R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]); + } else { + IWL_DEBUG_TEMP(priv, "Running temperature calibration\n"); + R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]); + R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]); + R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]); + R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]); + } + + /* + * Temperature is only 23 bits, so sign extend out to 32. + * + * NOTE If we haven't received a statistics notification yet + * with an updated temperature, use R4 provided to us in the + * "initialize" ALIVE response. + */ + if (!test_bit(STATUS_TEMPERATURE, &priv->status)) + vt = sign_extend32(R4, 23); + else + vt = sign_extend32(le32_to_cpu(priv->_agn.statistics. + general.common.temperature), 23); + + IWL_DEBUG_TEMP(priv, "Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt); + + if (R3 == R1) { + IWL_ERR(priv, "Calibration conflict R1 == R3\n"); + return -1; + } + + /* Calculate temperature in degrees Kelvin, adjust by 97%. + * Add offset to center the adjustment around 0 degrees Centigrade. */ + temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2); + temperature /= (R3 - R1); + temperature = (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET; + + IWL_DEBUG_TEMP(priv, "Calibrated temperature: %dK, %dC\n", + temperature, KELVIN_TO_CELSIUS(temperature)); + + return temperature; +} + +/* Adjust Txpower only if temperature variance is greater than threshold. */ +#define IWL_TEMPERATURE_THRESHOLD 3 + +/** + * iwl4965_is_temp_calib_needed - determines if new calibration is needed + * + * If the temperature changed has changed sufficiently, then a recalibration + * is needed. + * + * Assumes caller will replace priv->last_temperature once calibration + * executed. + */ +static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv) +{ + int temp_diff; + + if (!test_bit(STATUS_STATISTICS, &priv->status)) { + IWL_DEBUG_TEMP(priv, "Temperature not updated -- no statistics.\n"); + return 0; + } + + temp_diff = priv->temperature - priv->last_temperature; + + /* get absolute value */ + if (temp_diff < 0) { + IWL_DEBUG_POWER(priv, "Getting cooler, delta %d\n", temp_diff); + temp_diff = -temp_diff; + } else if (temp_diff == 0) + IWL_DEBUG_POWER(priv, "Temperature unchanged\n"); + else + IWL_DEBUG_POWER(priv, "Getting warmer, delta %d\n", temp_diff); + + if (temp_diff < IWL_TEMPERATURE_THRESHOLD) { + IWL_DEBUG_POWER(priv, " => thermal txpower calib not needed\n"); + return 0; + } + + IWL_DEBUG_POWER(priv, " => thermal txpower calib needed\n"); + + return 1; +} + +static void iwl4965_temperature_calib(struct iwl_priv *priv) +{ + s32 temp; + + temp = iwl4965_hw_get_temperature(priv); + if (temp < 0) + return; + + if (priv->temperature != temp) { + if (priv->temperature) + IWL_DEBUG_TEMP(priv, "Temperature changed " + "from %dC to %dC\n", + KELVIN_TO_CELSIUS(priv->temperature), + KELVIN_TO_CELSIUS(temp)); + else + IWL_DEBUG_TEMP(priv, "Temperature " + "initialized to %dC\n", + KELVIN_TO_CELSIUS(temp)); + } + + priv->temperature = temp; + iwl_tt_handler(priv); + set_bit(STATUS_TEMPERATURE, &priv->status); + + if (!priv->disable_tx_power_cal && + unlikely(!test_bit(STATUS_SCANNING, &priv->status)) && + iwl4965_is_temp_calib_needed(priv)) + queue_work(priv->workqueue, &priv->txpower_work); +} + +/** + * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration + */ +static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv, + u16 txq_id) +{ + /* Simply stop the queue, but don't change any configuration; + * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */ + iwl_write_prph(priv, + IWL49_SCD_QUEUE_STATUS_BITS(txq_id), + (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)| + (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN)); +} + +/** + * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE + * priv->lock must be held by the caller + */ +static int iwl4965_txq_agg_disable(struct iwl_priv *priv, u16 txq_id, + u16 ssn_idx, u8 tx_fifo) +{ + if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) || + (IWL49_FIRST_AMPDU_QUEUE + + priv->cfg->base_params->num_of_ampdu_queues <= txq_id)) { + IWL_WARN(priv, + "queue number out of range: %d, must be %d to %d\n", + txq_id, IWL49_FIRST_AMPDU_QUEUE, + IWL49_FIRST_AMPDU_QUEUE + + priv->cfg->base_params->num_of_ampdu_queues - 1); + return -EINVAL; + } + + iwl4965_tx_queue_stop_scheduler(priv, txq_id); + + iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id)); + + priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); + priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); + /* supposes that ssn_idx is valid (!= 0xFFF) */ + iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); + + iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id)); + iwl_txq_ctx_deactivate(priv, txq_id); + iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0); + + return 0; +} + +/** + * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue + */ +static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid, + u16 txq_id) +{ + u32 tbl_dw_addr; + u32 tbl_dw; + u16 scd_q2ratid; + + scd_q2ratid = ra_tid & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK; + + tbl_dw_addr = priv->scd_base_addr + + IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id); + + tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr); + + if (txq_id & 0x1) + tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF); + else + tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000); + + iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw); + + return 0; +} + + +/** + * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue + * + * NOTE: txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE, + * i.e. it must be one of the higher queues used for aggregation + */ +static int iwl4965_txq_agg_enable(struct iwl_priv *priv, int txq_id, + int tx_fifo, int sta_id, int tid, u16 ssn_idx) +{ + unsigned long flags; + u16 ra_tid; + int ret; + + if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) || + (IWL49_FIRST_AMPDU_QUEUE + + priv->cfg->base_params->num_of_ampdu_queues <= txq_id)) { + IWL_WARN(priv, + "queue number out of range: %d, must be %d to %d\n", + txq_id, IWL49_FIRST_AMPDU_QUEUE, + IWL49_FIRST_AMPDU_QUEUE + + priv->cfg->base_params->num_of_ampdu_queues - 1); + return -EINVAL; + } + + ra_tid = BUILD_RAxTID(sta_id, tid); + + /* Modify device's station table to Tx this TID */ + ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); + if (ret) + return ret; + + spin_lock_irqsave(&priv->lock, flags); + + /* Stop this Tx queue before configuring it */ + iwl4965_tx_queue_stop_scheduler(priv, txq_id); + + /* Map receiver-address / traffic-ID to this queue */ + iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id); + + /* Set this queue as a chain-building queue */ + iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id)); + + /* Place first TFD at index corresponding to start sequence number. + * Assumes that ssn_idx is valid (!= 0xFFF) */ + priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); + priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); + iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); + + /* Set up Tx window size and frame limit for this queue */ + iwl_write_targ_mem(priv, + priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id), + (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & + IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); + + iwl_write_targ_mem(priv, priv->scd_base_addr + + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32), + (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) + & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); + + iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id)); + + /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */ + iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1); + + spin_unlock_irqrestore(&priv->lock, flags); + + return 0; +} + + +static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len) +{ + switch (cmd_id) { + case REPLY_RXON: + return (u16) sizeof(struct iwl4965_rxon_cmd); + default: + return len; + } +} + +static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data) +{ + struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data; + addsta->mode = cmd->mode; + memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify)); + memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo)); + addsta->station_flags = cmd->station_flags; + addsta->station_flags_msk = cmd->station_flags_msk; + addsta->tid_disable_tx = cmd->tid_disable_tx; + addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid; + addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid; + addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn; + addsta->sleep_tx_count = cmd->sleep_tx_count; + addsta->reserved1 = cpu_to_le16(0); + addsta->reserved2 = cpu_to_le16(0); + + return (u16)sizeof(struct iwl4965_addsta_cmd); +} + +static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp) +{ + return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN; +} + +/** + * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue + */ +static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv, + struct iwl_ht_agg *agg, + struct iwl4965_tx_resp *tx_resp, + int txq_id, u16 start_idx) +{ + u16 status; + struct agg_tx_status *frame_status = tx_resp->u.agg_status; + struct ieee80211_tx_info *info = NULL; + struct ieee80211_hdr *hdr = NULL; + u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); + int i, sh, idx; + u16 seq; + if (agg->wait_for_ba) + IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n"); + + agg->frame_count = tx_resp->frame_count; + agg->start_idx = start_idx; + agg->rate_n_flags = rate_n_flags; + agg->bitmap = 0; + + /* num frames attempted by Tx command */ + if (agg->frame_count == 1) { + /* Only one frame was attempted; no block-ack will arrive */ + status = le16_to_cpu(frame_status[0].status); + idx = start_idx; + + /* FIXME: code repetition */ + IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n", + agg->frame_count, agg->start_idx, idx); + + info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb); + info->status.rates[0].count = tx_resp->failure_frame + 1; + info->flags &= ~IEEE80211_TX_CTL_AMPDU; + info->flags |= iwl_tx_status_to_mac80211(status); + iwlagn_hwrate_to_tx_control(priv, rate_n_flags, info); + /* FIXME: code repetition end */ + + IWL_DEBUG_TX_REPLY(priv, "1 Frame 0x%x failure :%d\n", + status & 0xff, tx_resp->failure_frame); + IWL_DEBUG_TX_REPLY(priv, "Rate Info rate_n_flags=%x\n", rate_n_flags); + + agg->wait_for_ba = 0; + } else { + /* Two or more frames were attempted; expect block-ack */ + u64 bitmap = 0; + int start = agg->start_idx; + + /* Construct bit-map of pending frames within Tx window */ + for (i = 0; i < agg->frame_count; i++) { + u16 sc; + status = le16_to_cpu(frame_status[i].status); + seq = le16_to_cpu(frame_status[i].sequence); + idx = SEQ_TO_INDEX(seq); + txq_id = SEQ_TO_QUEUE(seq); + + if (status & (AGG_TX_STATE_FEW_BYTES_MSK | + AGG_TX_STATE_ABORT_MSK)) + continue; + + IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n", + agg->frame_count, txq_id, idx); + + hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx); + if (!hdr) { + IWL_ERR(priv, + "BUG_ON idx doesn't point to valid skb" + " idx=%d, txq_id=%d\n", idx, txq_id); + return -1; + } + + sc = le16_to_cpu(hdr->seq_ctrl); + if (idx != (SEQ_TO_SN(sc) & 0xff)) { + IWL_ERR(priv, + "BUG_ON idx doesn't match seq control" + " idx=%d, seq_idx=%d, seq=%d\n", + idx, SEQ_TO_SN(sc), hdr->seq_ctrl); + return -1; + } + + IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n", + i, idx, SEQ_TO_SN(sc)); + + sh = idx - start; + if (sh > 64) { + sh = (start - idx) + 0xff; + bitmap = bitmap << sh; + sh = 0; + start = idx; + } else if (sh < -64) + sh = 0xff - (start - idx); + else if (sh < 0) { + sh = start - idx; + start = idx; + bitmap = bitmap << sh; + sh = 0; + } + bitmap |= 1ULL << sh; + IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n", + start, (unsigned long long)bitmap); + } + + agg->bitmap = bitmap; + agg->start_idx = start; + IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n", + agg->frame_count, agg->start_idx, + (unsigned long long)agg->bitmap); + + if (bitmap) + agg->wait_for_ba = 1; + } + return 0; +} + +static u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr) +{ + int i; + int start = 0; + int ret = IWL_INVALID_STATION; + unsigned long flags; + + if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) || + (priv->iw_mode == NL80211_IFTYPE_AP)) + start = IWL_STA_ID; + + if (is_broadcast_ether_addr(addr)) + return priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id; + + spin_lock_irqsave(&priv->sta_lock, flags); + for (i = start; i < priv->hw_params.max_stations; i++) + if (priv->stations[i].used && + (!compare_ether_addr(priv->stations[i].sta.sta.addr, + addr))) { + ret = i; + goto out; + } + + IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n", + addr, priv->num_stations); + + out: + /* + * It may be possible that more commands interacting with stations + * arrive before we completed processing the adding of + * station + */ + if (ret != IWL_INVALID_STATION && + (!(priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) || + ((priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) && + (priv->stations[ret].used & IWL_STA_UCODE_INPROGRESS)))) { + IWL_ERR(priv, "Requested station info for sta %d before ready.\n", + ret); + ret = IWL_INVALID_STATION; + } + spin_unlock_irqrestore(&priv->sta_lock, flags); + return ret; +} + +static int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr) +{ + if (priv->iw_mode == NL80211_IFTYPE_STATION) { + return IWL_AP_ID; + } else { + u8 *da = ieee80211_get_DA(hdr); + return iwl_find_station(priv, da); + } +} + +/** + * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response + */ +static void iwl4965_rx_reply_tx(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + u16 sequence = le16_to_cpu(pkt->hdr.sequence); + int txq_id = SEQ_TO_QUEUE(sequence); + int index = SEQ_TO_INDEX(sequence); + struct iwl_tx_queue *txq = &priv->txq[txq_id]; + struct ieee80211_hdr *hdr; + struct ieee80211_tx_info *info; + struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; + u32 status = le32_to_cpu(tx_resp->u.status); + int uninitialized_var(tid); + int sta_id; + int freed; + u8 *qc = NULL; + unsigned long flags; + + if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) { + IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d " + "is out of range [0-%d] %d %d\n", txq_id, + index, txq->q.n_bd, txq->q.write_ptr, + txq->q.read_ptr); + return; + } + + txq->time_stamp = jiffies; + info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb); + memset(&info->status, 0, sizeof(info->status)); + + hdr = iwl_tx_queue_get_hdr(priv, txq_id, index); + if (ieee80211_is_data_qos(hdr->frame_control)) { + qc = ieee80211_get_qos_ctl(hdr); + tid = qc[0] & 0xf; + } + + sta_id = iwl_get_ra_sta_id(priv, hdr); + if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) { + IWL_ERR(priv, "Station not known\n"); + return; + } + + spin_lock_irqsave(&priv->sta_lock, flags); + if (txq->sched_retry) { + const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp); + struct iwl_ht_agg *agg = NULL; + WARN_ON(!qc); + + agg = &priv->stations[sta_id].tid[tid].agg; + + iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index); + + /* check if BAR is needed */ + if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status)) + info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; + + if (txq->q.read_ptr != (scd_ssn & 0xff)) { + index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd); + IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn " + "%d index %d\n", scd_ssn , index); + freed = iwlagn_tx_queue_reclaim(priv, txq_id, index); + if (qc) + iwl_free_tfds_in_queue(priv, sta_id, + tid, freed); + + if (priv->mac80211_registered && + (iwl_queue_space(&txq->q) > txq->q.low_mark) && + (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) + iwl_wake_queue(priv, txq); + } + } else { + info->status.rates[0].count = tx_resp->failure_frame + 1; + info->flags |= iwl_tx_status_to_mac80211(status); + iwlagn_hwrate_to_tx_control(priv, + le32_to_cpu(tx_resp->rate_n_flags), + info); + + IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) " + "rate_n_flags 0x%x retries %d\n", + txq_id, + iwl_get_tx_fail_reason(status), status, + le32_to_cpu(tx_resp->rate_n_flags), + tx_resp->failure_frame); + + freed = iwlagn_tx_queue_reclaim(priv, txq_id, index); + if (qc && likely(sta_id != IWL_INVALID_STATION)) + iwl_free_tfds_in_queue(priv, sta_id, tid, freed); + else if (sta_id == IWL_INVALID_STATION) + IWL_DEBUG_TX_REPLY(priv, "Station not known\n"); + + if (priv->mac80211_registered && + (iwl_queue_space(&txq->q) > txq->q.low_mark)) + iwl_wake_queue(priv, txq); + } + if (qc && likely(sta_id != IWL_INVALID_STATION)) + iwlagn_txq_check_empty(priv, sta_id, tid, txq_id); + + iwl_check_abort_status(priv, tx_resp->frame_count, status); + + spin_unlock_irqrestore(&priv->sta_lock, flags); +} + +static void iwl4965_rx_beacon_notif(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl4965_beacon_notif *beacon = (void *)pkt->u.raw; +#ifdef CONFIG_IWLWIFI_DEBUG + u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags); + + IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d " + "tsf:0x%.8x%.8x rate:%d\n", + le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK, + beacon->beacon_notify_hdr.failure_frame, + le32_to_cpu(beacon->ibss_mgr_status), + le32_to_cpu(beacon->high_tsf), + le32_to_cpu(beacon->low_tsf), rate); +#endif + + priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); + + if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) + queue_work(priv->workqueue, &priv->beacon_update); +} + +static int iwl4965_calc_rssi(struct iwl_priv *priv, + struct iwl_rx_phy_res *rx_resp) +{ + /* data from PHY/DSP regarding signal strength, etc., + * contents are always there, not configurable by host. */ + struct iwl4965_rx_non_cfg_phy *ncphy = + (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy_buf; + u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL49_AGC_DB_MASK) + >> IWL49_AGC_DB_POS; + + u32 valid_antennae = + (le16_to_cpu(rx_resp->phy_flags) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK) + >> IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET; + u8 max_rssi = 0; + u32 i; + + /* Find max rssi among 3 possible receivers. + * These values are measured by the digital signal processor (DSP). + * They should stay fairly constant even as the signal strength varies, + * if the radio's automatic gain control (AGC) is working right. + * AGC value (see below) will provide the "interesting" info. */ + for (i = 0; i < 3; i++) + if (valid_antennae & (1 << i)) + max_rssi = max(ncphy->rssi_info[i << 1], max_rssi); + + IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n", + ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4], + max_rssi, agc); + + /* dBm = max_rssi dB - agc dB - constant. + * Higher AGC (higher radio gain) means lower signal. */ + return max_rssi - agc - IWLAGN_RSSI_OFFSET; +} + + +/* Set up 4965-specific Rx frame reply handlers */ +static void iwl4965_rx_handler_setup(struct iwl_priv *priv) +{ + /* Legacy Rx frames */ + priv->rx_handlers[REPLY_RX] = iwlagn_rx_reply_rx; + /* Tx response */ + priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx; + priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif; + + /* set up notification wait support */ + spin_lock_init(&priv->_agn.notif_wait_lock); + INIT_LIST_HEAD(&priv->_agn.notif_waits); + init_waitqueue_head(&priv->_agn.notif_waitq); +} + +static void iwl4965_setup_deferred_work(struct iwl_priv *priv) +{ + INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work); +} + +static void iwl4965_cancel_deferred_work(struct iwl_priv *priv) +{ + cancel_work_sync(&priv->txpower_work); +} + +static struct iwl_hcmd_ops iwl4965_hcmd = { + .rxon_assoc = iwl4965_send_rxon_assoc, + .commit_rxon = iwl4965_commit_rxon, + .set_rxon_chain = iwlagn_set_rxon_chain, + .send_bt_config = iwl_send_bt_config, +}; + +static void iwl4965_post_scan(struct iwl_priv *priv) +{ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + /* + * Since setting the RXON may have been deferred while + * performing the scan, fire one off if needed + */ + if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) + iwlcore_commit_rxon(priv, ctx); +} + +static void iwl4965_post_associate(struct iwl_priv *priv) +{ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + struct ieee80211_vif *vif = ctx->vif; + struct ieee80211_conf *conf = NULL; + int ret = 0; + + if (!vif || !priv->is_open) + return; + + if (vif->type == NL80211_IFTYPE_AP) { + IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__); + return; + } + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + iwl_scan_cancel_timeout(priv, 200); + + conf = ieee80211_get_hw_conf(priv->hw); + + ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; + iwlcore_commit_rxon(priv, ctx); + + ret = iwl_send_rxon_timing(priv, ctx); + if (ret) + IWL_WARN(priv, "RXON timing - " + "Attempting to continue.\n"); + + ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; + + iwl_set_rxon_ht(priv, &priv->current_ht_config); + + if (priv->cfg->ops->hcmd->set_rxon_chain) + priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); + + ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid); + + IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n", + vif->bss_conf.aid, vif->bss_conf.beacon_int); + + if (vif->bss_conf.use_short_preamble) + ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; + else + ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; + + if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) { + if (vif->bss_conf.use_short_slot) + ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; + else + ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; + } + + iwlcore_commit_rxon(priv, ctx); + + IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n", + vif->bss_conf.aid, ctx->active.bssid_addr); + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + break; + case NL80211_IFTYPE_ADHOC: + iwlagn_send_beacon_cmd(priv); + break; + default: + IWL_ERR(priv, "%s Should not be called in %d mode\n", + __func__, vif->type); + break; + } + + /* the chain noise calibration will enabled PM upon completion + * If chain noise has already been run, then we need to enable + * power management here */ + if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE) + iwl_power_update_mode(priv, false); + + /* Enable Rx differential gain and sensitivity calibrations */ + iwl_chain_noise_reset(priv); + priv->start_calib = 1; +} + +static void iwl4965_config_ap(struct iwl_priv *priv) +{ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + struct ieee80211_vif *vif = ctx->vif; + int ret = 0; + + lockdep_assert_held(&priv->mutex); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + /* The following should be done only at AP bring up */ + if (!iwl_is_associated_ctx(ctx)) { + + /* RXON - unassoc (to set timing command) */ + ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; + iwlcore_commit_rxon(priv, ctx); + + /* RXON Timing */ + ret = iwl_send_rxon_timing(priv, ctx); + if (ret) + IWL_WARN(priv, "RXON timing failed - " + "Attempting to continue.\n"); + + /* AP has all antennas */ + priv->chain_noise_data.active_chains = + priv->hw_params.valid_rx_ant; + iwl_set_rxon_ht(priv, &priv->current_ht_config); + if (priv->cfg->ops->hcmd->set_rxon_chain) + priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); + + ctx->staging.assoc_id = 0; + + if (vif->bss_conf.use_short_preamble) + ctx->staging.flags |= + RXON_FLG_SHORT_PREAMBLE_MSK; + else + ctx->staging.flags &= + ~RXON_FLG_SHORT_PREAMBLE_MSK; + + if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) { + if (vif->bss_conf.use_short_slot) + ctx->staging.flags |= + RXON_FLG_SHORT_SLOT_MSK; + else + ctx->staging.flags &= + ~RXON_FLG_SHORT_SLOT_MSK; + } + /* need to send beacon cmd before committing assoc RXON! */ + iwlagn_send_beacon_cmd(priv); + /* restore RXON assoc */ + ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; + iwlcore_commit_rxon(priv, ctx); + } + iwlagn_send_beacon_cmd(priv); + + /* FIXME - we need to add code here to detect a totally new + * configuration, reset the AP, unassoc, rxon timing, assoc, + * clear sta table, add BCAST sta... */ +} + +static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = { + .get_hcmd_size = iwl4965_get_hcmd_size, + .build_addsta_hcmd = iwl4965_build_addsta_hcmd, + .chain_noise_reset = iwl4965_chain_noise_reset, + .gain_computation = iwl4965_gain_computation, + .tx_cmd_protection = iwl_legacy_tx_cmd_protection, + .calc_rssi = iwl4965_calc_rssi, + .request_scan = iwlagn_request_scan, + .post_scan = iwl4965_post_scan, +}; + +static struct iwl_lib_ops iwl4965_lib = { + .set_hw_params = iwl4965_hw_set_hw_params, + .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl, + .txq_set_sched = iwl4965_txq_set_sched, + .txq_agg_enable = iwl4965_txq_agg_enable, + .txq_agg_disable = iwl4965_txq_agg_disable, + .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd, + .txq_free_tfd = iwl_hw_txq_free_tfd, + .txq_init = iwl_hw_tx_queue_init, + .rx_handler_setup = iwl4965_rx_handler_setup, + .setup_deferred_work = iwl4965_setup_deferred_work, + .cancel_deferred_work = iwl4965_cancel_deferred_work, + .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr, + .alive_notify = iwl4965_alive_notify, + .init_alive_start = iwl4965_init_alive_start, + .load_ucode = iwl4965_load_bsm, + .dump_nic_event_log = iwl_dump_nic_event_log, + .dump_nic_error_log = iwl_dump_nic_error_log, + .dump_fh = iwl_dump_fh, + .set_channel_switch = iwl4965_hw_channel_switch, + .apm_ops = { + .init = iwl_apm_init, + .config = iwl4965_nic_config, + }, + .eeprom_ops = { + .regulatory_bands = { + EEPROM_REGULATORY_BAND_1_CHANNELS, + EEPROM_REGULATORY_BAND_2_CHANNELS, + EEPROM_REGULATORY_BAND_3_CHANNELS, + EEPROM_REGULATORY_BAND_4_CHANNELS, + EEPROM_REGULATORY_BAND_5_CHANNELS, + EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS, + EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS + }, + .acquire_semaphore = iwlcore_eeprom_acquire_semaphore, + .release_semaphore = iwlcore_eeprom_release_semaphore, + .calib_version = iwl4965_eeprom_calib_version, + .query_addr = iwlcore_eeprom_query_addr, + }, + .send_tx_power = iwl4965_send_tx_power, + .update_chain_flags = iwl_update_chain_flags, + .isr_ops = { + .isr = iwl_isr_legacy, + }, + .temp_ops = { + .temperature = iwl4965_temperature_calib, + }, + .debugfs_ops = { + .rx_stats_read = iwl_ucode_rx_stats_read, + .tx_stats_read = iwl_ucode_tx_stats_read, + .general_stats_read = iwl_ucode_general_stats_read, + .bt_stats_read = iwl_ucode_bt_stats_read, + .reply_tx_error = iwl_reply_tx_error_read, + }, + .check_plcp_health = iwl_good_plcp_health, +}; + +static const struct iwl_legacy_ops iwl4965_legacy_ops = { + .post_associate = iwl4965_post_associate, + .config_ap = iwl4965_config_ap, + .manage_ibss_station = iwlagn_manage_ibss_station, + .update_bcast_stations = iwl_update_bcast_stations, +}; + +struct ieee80211_ops iwl4965_hw_ops = { + .tx = iwlagn_mac_tx, + .start = iwlagn_mac_start, + .stop = iwlagn_mac_stop, + .add_interface = iwl_mac_add_interface, + .remove_interface = iwl_mac_remove_interface, + .change_interface = iwl_mac_change_interface, + .config = iwl_legacy_mac_config, + .configure_filter = iwlagn_configure_filter, + .set_key = iwlagn_mac_set_key, + .update_tkip_key = iwlagn_mac_update_tkip_key, + .conf_tx = iwl_mac_conf_tx, + .reset_tsf = iwl_legacy_mac_reset_tsf, + .bss_info_changed = iwl_legacy_mac_bss_info_changed, + .ampdu_action = iwlagn_mac_ampdu_action, + .hw_scan = iwl_mac_hw_scan, + .sta_add = iwlagn_mac_sta_add, + .sta_remove = iwl_mac_sta_remove, + .channel_switch = iwlagn_mac_channel_switch, + .flush = iwlagn_mac_flush, + .tx_last_beacon = iwl_mac_tx_last_beacon, +}; + +static const struct iwl_ops iwl4965_ops = { + .lib = &iwl4965_lib, + .hcmd = &iwl4965_hcmd, + .utils = &iwl4965_hcmd_utils, + .led = &iwlagn_led_ops, + .legacy = &iwl4965_legacy_ops, + .ieee80211_ops = &iwl4965_hw_ops, +}; + +static struct iwl_base_params iwl4965_base_params = { + .eeprom_size = IWL4965_EEPROM_IMG_SIZE, + .num_of_queues = IWL49_NUM_QUEUES, + .num_of_ampdu_queues = IWL49_NUM_AMPDU_QUEUES, + .pll_cfg_val = 0, + .set_l0s = true, + .use_bsm = true, + .use_isr_legacy = true, + .broken_powersave = true, + .led_compensation = 61, + .chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS, + .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF, + .wd_timeout = IWL_DEF_WD_TIMEOUT, + .temperature_kelvin = true, + .max_event_log_size = 512, + .tx_power_by_driver = true, + .ucode_tracing = true, + .sensitivity_calib_by_driver = true, + .chain_noise_calib_by_driver = true, + .no_agg_framecnt_info = true, +}; + +struct iwl_cfg iwl4965_agn_cfg = { + .name = "Intel(R) Wireless WiFi Link 4965AGN", + .fw_name_pre = IWL4965_FW_PRE, + .ucode_api_max = IWL4965_UCODE_API_MAX, + .ucode_api_min = IWL4965_UCODE_API_MIN, + .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N, + .valid_tx_ant = ANT_AB, + .valid_rx_ant = ANT_ABC, + .eeprom_ver = EEPROM_4965_EEPROM_VERSION, + .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION, + .ops = &iwl4965_ops, + .mod_params = &iwlagn_mod_params, + .base_params = &iwl4965_base_params, + .led_mode = IWL_LED_BLINK, + /* + * Force use of chains B and C for scan RX on 5 GHz band + * because the device has off-channel reception on chain A. + */ + .scan_rx_antennas[IEEE80211_BAND_5GHZ] = ANT_BC, +}; + +/* Module firmware */ +MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX)); + diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index d08fa938501a..9965215697bb 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -86,6 +86,7 @@ MODULE_DESCRIPTION(DRV_DESCRIPTION); MODULE_VERSION(DRV_VERSION); MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); MODULE_LICENSE("GPL"); +MODULE_ALIAS("iwl4965"); static int iwlagn_ant_coupling; static bool iwlagn_bt_ch_announce = 1; @@ -3809,6 +3810,7 @@ static void iwlagn_bg_roc_done(struct work_struct *work) mutex_unlock(&priv->mutex); } +#ifdef CONFIG_IWL5000 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw, struct ieee80211_channel *channel, enum nl80211_channel_type channel_type, @@ -3864,6 +3866,7 @@ static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw) return 0; } +#endif /***************************************************************************** * @@ -4033,6 +4036,7 @@ static void iwl_uninit_drv(struct iwl_priv *priv) kfree(priv->scan_cmd); } +#ifdef CONFIG_IWL5000 struct ieee80211_ops iwlagn_hw_ops = { .tx = iwlagn_mac_tx, .start = iwlagn_mac_start, @@ -4057,6 +4061,7 @@ struct ieee80211_ops iwlagn_hw_ops = { .remain_on_channel = iwl_mac_remain_on_channel, .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel, }; +#endif static void iwl_hw_detect(struct iwl_priv *priv) { @@ -4124,7 +4129,12 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (cfg->mod_params->disable_hw_scan) { dev_printk(KERN_DEBUG, &(pdev->dev), "sw scan support is deprecated\n"); +#ifdef CONFIG_IWL5000 iwlagn_hw_ops.hw_scan = NULL; +#endif +#ifdef CONFIG_IWL4965 + iwl4965_hw_ops.hw_scan = NULL; +#endif } hw = iwl_alloc_all(cfg); @@ -4503,6 +4513,12 @@ static void __devexit iwl_pci_remove(struct pci_dev *pdev) /* Hardware specific file defines the PCI IDs table for that hardware module */ static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = { +#ifdef CONFIG_IWL4965 + {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)}, + {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)}, +#endif /* CONFIG_IWL4965 */ +#ifdef CONFIG_IWL5000 +/* 5100 Series WiFi */ {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */ @@ -4688,6 +4704,8 @@ static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = { {IWL_PCI_DEVICE(0x0893, 0x0266, iwl230_bg_cfg)}, {IWL_PCI_DEVICE(0x0892, 0x0466, iwl230_bg_cfg)}, +#endif /* CONFIG_IWL5000 */ + {0} }; MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids); diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 4bd342060254..977ddfb8c24c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -43,6 +43,11 @@ #include "iwl-helpers.h" +MODULE_DESCRIPTION("iwl core"); +MODULE_VERSION(IWLWIFI_VERSION); +MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); +MODULE_LICENSE("GPL"); + /* * set bt_coex_active to true, uCode will do kill/defer * every time the priority line is asserted (BT is sending signals on the @@ -60,12 +65,15 @@ * default: bt_coex_active = true (BT_COEX_ENABLE) */ bool bt_coex_active = true; +EXPORT_SYMBOL_GPL(bt_coex_active); module_param(bt_coex_active, bool, S_IRUGO); MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); u32 iwl_debug_level; +EXPORT_SYMBOL(iwl_debug_level); const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; +EXPORT_SYMBOL(iwl_bcast_addr); /* This function both allocates and initializes hw and priv. */ @@ -90,6 +98,7 @@ struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg) out: return hw; } +EXPORT_SYMBOL(iwl_alloc_all); #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ @@ -263,6 +272,7 @@ int iwlcore_init_geos(struct iwl_priv *priv) return 0; } +EXPORT_SYMBOL(iwlcore_init_geos); /* * iwlcore_free_geos - undo allocations in iwlcore_init_geos @@ -273,6 +283,7 @@ void iwlcore_free_geos(struct iwl_priv *priv) kfree(priv->ieee_rates); clear_bit(STATUS_GEO_CONFIGURED, &priv->status); } +EXPORT_SYMBOL(iwlcore_free_geos); static bool iwl_is_channel_extension(struct iwl_priv *priv, enum ieee80211_band band, @@ -317,6 +328,7 @@ bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, le16_to_cpu(ctx->staging.channel), ctx->ht.extension_chan_offset); } +EXPORT_SYMBOL(iwl_is_ht40_tx_allowed); static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) { @@ -417,6 +429,7 @@ int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx) return iwl_send_cmd_pdu(priv, ctx->rxon_timing_cmd, sizeof(ctx->timing), &ctx->timing); } +EXPORT_SYMBOL(iwl_send_rxon_timing); void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx, int hw_decrypt) @@ -429,6 +442,7 @@ void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx, rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; } +EXPORT_SYMBOL(iwl_set_rxon_hwcrypto); /* validate RXON structure is valid */ int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) @@ -501,6 +515,7 @@ int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) } return 0; } +EXPORT_SYMBOL(iwl_check_rxon_cmd); /** * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed @@ -564,6 +579,7 @@ int iwl_full_rxon_required(struct iwl_priv *priv, return 0; } +EXPORT_SYMBOL(iwl_full_rxon_required); u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv, struct iwl_rxon_context *ctx) @@ -577,6 +593,7 @@ u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv, else return IWL_RATE_6M_PLCP; } +EXPORT_SYMBOL(iwl_rate_get_lowest_plcp); static void _iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf, @@ -653,6 +670,7 @@ void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) for_each_context(priv, ctx) _iwl_set_rxon_ht(priv, ht_conf, ctx); } +EXPORT_SYMBOL(iwl_set_rxon_ht); /* Return valid, unused, channel for a passive scan to reset the RF */ u8 iwl_get_single_channel_number(struct iwl_priv *priv, @@ -693,6 +711,7 @@ u8 iwl_get_single_channel_number(struct iwl_priv *priv, return channel; } +EXPORT_SYMBOL(iwl_get_single_channel_number); /** * iwl_set_rxon_channel - Set the band and channel values in staging RXON @@ -723,6 +742,7 @@ int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch, return 0; } +EXPORT_SYMBOL(iwl_set_rxon_channel); void iwl_set_flags_for_band(struct iwl_priv *priv, struct iwl_rxon_context *ctx, @@ -746,6 +766,7 @@ void iwl_set_flags_for_band(struct iwl_priv *priv, ctx->staging.flags &= ~RXON_FLG_CCK_MSK; } } +EXPORT_SYMBOL(iwl_set_flags_for_band); /* * initialize rxon structure with default values from eeprom @@ -817,6 +838,7 @@ void iwl_connection_init_rx_config(struct iwl_priv *priv, ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff; ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff; } +EXPORT_SYMBOL(iwl_connection_init_rx_config); void iwl_set_rate(struct iwl_priv *priv) { @@ -849,6 +871,7 @@ void iwl_set_rate(struct iwl_priv *priv) (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; } } +EXPORT_SYMBOL(iwl_set_rate); void iwl_chswitch_done(struct iwl_priv *priv, bool is_success) { @@ -868,6 +891,7 @@ void iwl_chswitch_done(struct iwl_priv *priv, bool is_success) mutex_unlock(&priv->mutex); } } +EXPORT_SYMBOL(iwl_chswitch_done); void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) { @@ -895,6 +919,7 @@ void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) } } } +EXPORT_SYMBOL(iwl_rx_csa); #ifdef CONFIG_IWLWIFI_DEBUG void iwl_print_rx_config_cmd(struct iwl_priv *priv, @@ -916,6 +941,7 @@ void iwl_print_rx_config_cmd(struct iwl_priv *priv, IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); } +EXPORT_SYMBOL(iwl_print_rx_config_cmd); #endif /** * iwl_irq_handle_error - called for HW or SW error interrupt from card @@ -995,6 +1021,7 @@ void iwl_irq_handle_error(struct iwl_priv *priv) queue_work(priv->workqueue, &priv->restart); } } +EXPORT_SYMBOL(iwl_irq_handle_error); static int iwl_apm_stop_master(struct iwl_priv *priv) { @@ -1031,6 +1058,7 @@ void iwl_apm_stop(struct iwl_priv *priv) */ iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); } +EXPORT_SYMBOL(iwl_apm_stop); /* @@ -1145,6 +1173,7 @@ int iwl_apm_init(struct iwl_priv *priv) out: return ret; } +EXPORT_SYMBOL(iwl_apm_init); int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) @@ -1204,6 +1233,7 @@ int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) } return ret; } +EXPORT_SYMBOL(iwl_set_tx_power); void iwl_send_bt_config(struct iwl_priv *priv) { @@ -1227,6 +1257,7 @@ void iwl_send_bt_config(struct iwl_priv *priv) sizeof(struct iwl_bt_cmd), &bt_cmd)) IWL_ERR(priv, "failed to send BT Coex Config\n"); } +EXPORT_SYMBOL(iwl_send_bt_config); int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) { @@ -1244,6 +1275,7 @@ int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) sizeof(struct iwl_statistics_cmd), &statistics_cmd); } +EXPORT_SYMBOL(iwl_send_statistics_request); void iwl_rx_pm_sleep_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) @@ -1255,6 +1287,7 @@ void iwl_rx_pm_sleep_notif(struct iwl_priv *priv, sleep->pm_sleep_mode, sleep->pm_wakeup_src); #endif } +EXPORT_SYMBOL(iwl_rx_pm_sleep_notif); void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) @@ -1266,6 +1299,7 @@ void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv, get_cmd_string(pkt->hdr.cmd)); iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len); } +EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif); void iwl_rx_reply_error(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) @@ -1280,6 +1314,7 @@ void iwl_rx_reply_error(struct iwl_priv *priv, le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), le32_to_cpu(pkt->u.err_resp.error_info)); } +EXPORT_SYMBOL(iwl_rx_reply_error); void iwl_clear_isr_stats(struct iwl_priv *priv) { @@ -1331,6 +1366,7 @@ int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, IWL_DEBUG_MAC80211(priv, "leave\n"); return 0; } +EXPORT_SYMBOL(iwl_mac_conf_tx); int iwl_mac_tx_last_beacon(struct ieee80211_hw *hw) { @@ -1338,6 +1374,7 @@ int iwl_mac_tx_last_beacon(struct ieee80211_hw *hw) return priv->ibss_manager == IWL_IBSS_MANAGER; } +EXPORT_SYMBOL_GPL(iwl_mac_tx_last_beacon); static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { @@ -1447,6 +1484,7 @@ int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) IWL_DEBUG_MAC80211(priv, "leave\n"); return err; } +EXPORT_SYMBOL(iwl_mac_add_interface); static void iwl_teardown_interface(struct iwl_priv *priv, struct ieee80211_vif *vif, @@ -1499,6 +1537,7 @@ void iwl_mac_remove_interface(struct ieee80211_hw *hw, IWL_DEBUG_MAC80211(priv, "leave\n"); } +EXPORT_SYMBOL(iwl_mac_remove_interface); int iwl_alloc_txq_mem(struct iwl_priv *priv) { @@ -1513,12 +1552,14 @@ int iwl_alloc_txq_mem(struct iwl_priv *priv) } return 0; } +EXPORT_SYMBOL(iwl_alloc_txq_mem); void iwl_free_txq_mem(struct iwl_priv *priv) { kfree(priv->txq); priv->txq = NULL; } +EXPORT_SYMBOL(iwl_free_txq_mem); #ifdef CONFIG_IWLWIFI_DEBUGFS @@ -1557,6 +1598,7 @@ int iwl_alloc_traffic_mem(struct iwl_priv *priv) iwl_reset_traffic_log(priv); return 0; } +EXPORT_SYMBOL(iwl_alloc_traffic_mem); void iwl_free_traffic_mem(struct iwl_priv *priv) { @@ -1566,6 +1608,7 @@ void iwl_free_traffic_mem(struct iwl_priv *priv) kfree(priv->rx_traffic); priv->rx_traffic = NULL; } +EXPORT_SYMBOL(iwl_free_traffic_mem); void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv, u16 length, struct ieee80211_hdr *header) @@ -1590,6 +1633,7 @@ void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv, (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; } } +EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame); void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv, u16 length, struct ieee80211_hdr *header) @@ -1614,6 +1658,7 @@ void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv, (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES; } } +EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame); const char *get_mgmt_string(int cmd) { @@ -1750,6 +1795,7 @@ void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len) stats->data_bytes += len; } } +EXPORT_SYMBOL(iwl_update_stats); #endif static void iwl_force_rf_reset(struct iwl_priv *priv) @@ -1888,6 +1934,7 @@ int iwl_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, mutex_unlock(&priv->mutex); return err; } +EXPORT_SYMBOL(iwl_mac_change_interface); /* * On every watchdog tick we check (latest) time stamp. If it does not @@ -1959,6 +2006,7 @@ void iwl_bg_watchdog(unsigned long data) mod_timer(&priv->watchdog, jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout))); } +EXPORT_SYMBOL(iwl_bg_watchdog); void iwl_setup_watchdog(struct iwl_priv *priv) { @@ -1970,6 +2018,7 @@ void iwl_setup_watchdog(struct iwl_priv *priv) else del_timer(&priv->watchdog); } +EXPORT_SYMBOL(iwl_setup_watchdog); /* * extended beacon time format @@ -1995,6 +2044,7 @@ u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec, u32 beacon_interval) return (quot << priv->hw_params.beacon_time_tsf_bits) + rem; } +EXPORT_SYMBOL(iwl_usecs_to_beacons); /* base is usually what we get from ucode with each received frame, * the same as HW timer counter counting down @@ -2022,6 +2072,7 @@ __le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base, return cpu_to_le32(res); } +EXPORT_SYMBOL(iwl_add_beacon_time); #ifdef CONFIG_PM @@ -2041,6 +2092,7 @@ int iwl_pci_suspend(struct device *device) return 0; } +EXPORT_SYMBOL(iwl_pci_suspend); int iwl_pci_resume(struct device *device) { @@ -2069,6 +2121,7 @@ int iwl_pci_resume(struct device *device) return 0; } +EXPORT_SYMBOL(iwl_pci_resume); const struct dev_pm_ops iwl_pm_ops = { .suspend = iwl_pci_suspend, @@ -2078,5 +2131,6 @@ const struct dev_pm_ops iwl_pm_ops = { .poweroff = iwl_pci_suspend, .restore = iwl_pci_resume, }; +EXPORT_SYMBOL(iwl_pm_ops); #endif /* CONFIG_PM */ diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c index 8842411f1cf3..bc7a965c18f9 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c +++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c @@ -1788,6 +1788,7 @@ err: iwl_dbgfs_unregister(priv); return -ENOMEM; } +EXPORT_SYMBOL(iwl_dbgfs_register); /** * Remove the debugfs files and directories @@ -1801,6 +1802,7 @@ void iwl_dbgfs_unregister(struct iwl_priv *priv) debugfs_remove_recursive(priv->debugfs_dir); priv->debugfs_dir = NULL; } +EXPORT_SYMBOL(iwl_dbgfs_unregister); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 58165c769cf1..065615ee040a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -43,14 +43,14 @@ #include "iwl-prph.h" #include "iwl-fh.h" #include "iwl-debug.h" +#include "iwl-4965-hw.h" +#include "iwl-3945-hw.h" #include "iwl-agn-hw.h" #include "iwl-led.h" #include "iwl-power.h" #include "iwl-agn-rs.h" #include "iwl-agn-tt.h" -#define U32_PAD(n) ((4-(n))&0x3) - struct iwl_tx_queue; /* CT-KILL constants */ diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c index 833194a2c639..358cfd7e5af1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c +++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c @@ -222,6 +222,7 @@ const u8 *iwlcore_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) BUG_ON(offset >= priv->cfg->base_params->eeprom_size); return &priv->eeprom[offset]; } +EXPORT_SYMBOL(iwlcore_eeprom_query_addr); static int iwl_init_otp_access(struct iwl_priv *priv) { @@ -381,6 +382,7 @@ const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) { return priv->cfg->ops->lib->eeprom_ops.query_addr(priv, offset); } +EXPORT_SYMBOL(iwl_eeprom_query_addr); u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset) { @@ -388,6 +390,7 @@ u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset) return 0; return (u16)priv->eeprom[offset] | ((u16)priv->eeprom[offset + 1] << 8); } +EXPORT_SYMBOL(iwl_eeprom_query16); /** * iwl_eeprom_init - read EEPROM contents @@ -506,12 +509,14 @@ err: alloc_err: return ret; } +EXPORT_SYMBOL(iwl_eeprom_init); void iwl_eeprom_free(struct iwl_priv *priv) { kfree(priv->eeprom); priv->eeprom = NULL; } +EXPORT_SYMBOL(iwl_eeprom_free); static void iwl_init_band_reference(const struct iwl_priv *priv, int eep_band, int *eeprom_ch_count, @@ -774,6 +779,7 @@ int iwl_init_channel_map(struct iwl_priv *priv) return 0; } +EXPORT_SYMBOL(iwl_init_channel_map); /* * iwl_free_channel_map - undo allocations in iwl_init_channel_map @@ -783,6 +789,7 @@ void iwl_free_channel_map(struct iwl_priv *priv) kfree(priv->channel_info); priv->channel_count = 0; } +EXPORT_SYMBOL(iwl_free_channel_map); /** * iwl_get_channel_info - Find driver's private channel info @@ -811,3 +818,4 @@ const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv, return NULL; } +EXPORT_SYMBOL(iwl_get_channel_info); diff --git a/drivers/net/wireless/iwlwifi/iwl-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-hcmd.c index 02499f684683..e4b953d7b7bf 100644 --- a/drivers/net/wireless/iwlwifi/iwl-hcmd.c +++ b/drivers/net/wireless/iwlwifi/iwl-hcmd.c @@ -114,6 +114,7 @@ const char *get_cmd_string(u8 cmd) } } +EXPORT_SYMBOL(get_cmd_string); #define HOST_COMPLETE_TIMEOUT (HZ / 2) @@ -252,6 +253,7 @@ out: mutex_unlock(&priv->sync_cmd_mutex); return ret; } +EXPORT_SYMBOL(iwl_send_cmd_sync); int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) { @@ -260,6 +262,7 @@ int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) return iwl_send_cmd_sync(priv, cmd); } +EXPORT_SYMBOL(iwl_send_cmd); int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data) { @@ -271,6 +274,7 @@ int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data) return iwl_send_cmd_sync(priv, &cmd); } +EXPORT_SYMBOL(iwl_send_cmd_pdu); int iwl_send_cmd_pdu_async(struct iwl_priv *priv, u8 id, u16 len, const void *data, @@ -289,3 +293,4 @@ int iwl_send_cmd_pdu_async(struct iwl_priv *priv, return iwl_send_cmd_async(priv, &cmd); } +EXPORT_SYMBOL(iwl_send_cmd_pdu_async); diff --git a/drivers/net/wireless/iwlwifi/iwl-led.c b/drivers/net/wireless/iwlwifi/iwl-led.c index d7f2a0bb32c9..074ad2275228 100644 --- a/drivers/net/wireless/iwlwifi/iwl-led.c +++ b/drivers/net/wireless/iwlwifi/iwl-led.c @@ -175,6 +175,7 @@ void iwl_leds_init(struct iwl_priv *priv) priv->led_registered = true; } +EXPORT_SYMBOL(iwl_leds_init); void iwl_leds_exit(struct iwl_priv *priv) { @@ -184,3 +185,4 @@ void iwl_leds_exit(struct iwl_priv *priv) led_classdev_unregister(&priv->led); kfree(priv->led.name); } +EXPORT_SYMBOL(iwl_leds_exit); diff --git a/drivers/net/wireless/iwlwifi/iwl-legacy.c b/drivers/net/wireless/iwlwifi/iwl-legacy.c new file mode 100644 index 000000000000..e1ace3ce30b3 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-legacy.c @@ -0,0 +1,657 @@ +/****************************************************************************** + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + *****************************************************************************/ + +#include <linux/kernel.h> +#include <net/mac80211.h> + +#include "iwl-dev.h" +#include "iwl-core.h" +#include "iwl-helpers.h" +#include "iwl-legacy.h" + +static void iwl_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx) +{ + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + if (!ctx->is_active) + return; + + ctx->qos_data.def_qos_parm.qos_flags = 0; + + if (ctx->qos_data.qos_active) + ctx->qos_data.def_qos_parm.qos_flags |= + QOS_PARAM_FLG_UPDATE_EDCA_MSK; + + if (ctx->ht.enabled) + ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; + + IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", + ctx->qos_data.qos_active, + ctx->qos_data.def_qos_parm.qos_flags); + + iwl_send_cmd_pdu_async(priv, ctx->qos_cmd, + sizeof(struct iwl_qosparam_cmd), + &ctx->qos_data.def_qos_parm, NULL); +} + +/** + * iwl_legacy_mac_config - mac80211 config callback + */ +int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed) +{ + struct iwl_priv *priv = hw->priv; + const struct iwl_channel_info *ch_info; + struct ieee80211_conf *conf = &hw->conf; + struct ieee80211_channel *channel = conf->channel; + struct iwl_ht_config *ht_conf = &priv->current_ht_config; + struct iwl_rxon_context *ctx; + unsigned long flags = 0; + int ret = 0; + u16 ch; + int scan_active = 0; + bool ht_changed[NUM_IWL_RXON_CTX] = {}; + + if (WARN_ON(!priv->cfg->ops->legacy)) + return -EOPNOTSUPP; + + mutex_lock(&priv->mutex); + + IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n", + channel->hw_value, changed); + + if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) { + scan_active = 1; + IWL_DEBUG_MAC80211(priv, "scan active\n"); + } + + if (changed & (IEEE80211_CONF_CHANGE_SMPS | + IEEE80211_CONF_CHANGE_CHANNEL)) { + /* mac80211 uses static for non-HT which is what we want */ + priv->current_ht_config.smps = conf->smps_mode; + + /* + * Recalculate chain counts. + * + * If monitor mode is enabled then mac80211 will + * set up the SM PS mode to OFF if an HT channel is + * configured. + */ + if (priv->cfg->ops->hcmd->set_rxon_chain) + for_each_context(priv, ctx) + priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); + } + + /* during scanning mac80211 will delay channel setting until + * scan finish with changed = 0 + */ + if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { + if (scan_active) + goto set_ch_out; + + ch = channel->hw_value; + ch_info = iwl_get_channel_info(priv, channel->band, ch); + if (!is_channel_valid(ch_info)) { + IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); + ret = -EINVAL; + goto set_ch_out; + } + + spin_lock_irqsave(&priv->lock, flags); + + for_each_context(priv, ctx) { + /* Configure HT40 channels */ + if (ctx->ht.enabled != conf_is_ht(conf)) { + ctx->ht.enabled = conf_is_ht(conf); + ht_changed[ctx->ctxid] = true; + } + if (ctx->ht.enabled) { + if (conf_is_ht40_minus(conf)) { + ctx->ht.extension_chan_offset = + IEEE80211_HT_PARAM_CHA_SEC_BELOW; + ctx->ht.is_40mhz = true; + } else if (conf_is_ht40_plus(conf)) { + ctx->ht.extension_chan_offset = + IEEE80211_HT_PARAM_CHA_SEC_ABOVE; + ctx->ht.is_40mhz = true; + } else { + ctx->ht.extension_chan_offset = + IEEE80211_HT_PARAM_CHA_SEC_NONE; + ctx->ht.is_40mhz = false; + } + } else + ctx->ht.is_40mhz = false; + + /* + * Default to no protection. Protection mode will + * later be set from BSS config in iwl_ht_conf + */ + ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; + + /* if we are switching from ht to 2.4 clear flags + * from any ht related info since 2.4 does not + * support ht */ + if ((le16_to_cpu(ctx->staging.channel) != ch)) + ctx->staging.flags = 0; + + iwl_set_rxon_channel(priv, channel, ctx); + iwl_set_rxon_ht(priv, ht_conf); + + iwl_set_flags_for_band(priv, ctx, channel->band, + ctx->vif); + } + + spin_unlock_irqrestore(&priv->lock, flags); + + if (priv->cfg->ops->legacy->update_bcast_stations) + ret = priv->cfg->ops->legacy->update_bcast_stations(priv); + + set_ch_out: + /* The list of supported rates and rate mask can be different + * for each band; since the band may have changed, reset + * the rate mask to what mac80211 lists */ + iwl_set_rate(priv); + } + + if (changed & (IEEE80211_CONF_CHANGE_PS | + IEEE80211_CONF_CHANGE_IDLE)) { + ret = iwl_power_update_mode(priv, false); + if (ret) + IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); + } + + if (changed & IEEE80211_CONF_CHANGE_POWER) { + IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", + priv->tx_power_user_lmt, conf->power_level); + + iwl_set_tx_power(priv, conf->power_level, false); + } + + if (!iwl_is_ready(priv)) { + IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); + goto out; + } + + if (scan_active) + goto out; + + for_each_context(priv, ctx) { + if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging))) + iwlcore_commit_rxon(priv, ctx); + else + IWL_DEBUG_INFO(priv, + "Not re-sending same RXON configuration.\n"); + if (ht_changed[ctx->ctxid]) + iwl_update_qos(priv, ctx); + } + +out: + IWL_DEBUG_MAC80211(priv, "leave\n"); + mutex_unlock(&priv->mutex); + return ret; +} +EXPORT_SYMBOL(iwl_legacy_mac_config); + +void iwl_legacy_mac_reset_tsf(struct ieee80211_hw *hw) +{ + struct iwl_priv *priv = hw->priv; + unsigned long flags; + /* IBSS can only be the IWL_RXON_CTX_BSS context */ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + if (WARN_ON(!priv->cfg->ops->legacy)) + return; + + mutex_lock(&priv->mutex); + IWL_DEBUG_MAC80211(priv, "enter\n"); + + spin_lock_irqsave(&priv->lock, flags); + memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config)); + spin_unlock_irqrestore(&priv->lock, flags); + + spin_lock_irqsave(&priv->lock, flags); + + /* new association get rid of ibss beacon skb */ + if (priv->beacon_skb) + dev_kfree_skb(priv->beacon_skb); + + priv->beacon_skb = NULL; + + priv->timestamp = 0; + + spin_unlock_irqrestore(&priv->lock, flags); + + iwl_scan_cancel_timeout(priv, 100); + if (!iwl_is_ready_rf(priv)) { + IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); + mutex_unlock(&priv->mutex); + return; + } + + /* we are restarting association process + * clear RXON_FILTER_ASSOC_MSK bit + */ + ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; + iwlcore_commit_rxon(priv, ctx); + + iwl_set_rate(priv); + + mutex_unlock(&priv->mutex); + + IWL_DEBUG_MAC80211(priv, "leave\n"); +} +EXPORT_SYMBOL(iwl_legacy_mac_reset_tsf); + +static void iwl_ht_conf(struct iwl_priv *priv, + struct ieee80211_vif *vif) +{ + struct iwl_ht_config *ht_conf = &priv->current_ht_config; + struct ieee80211_sta *sta; + struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; + struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); + + IWL_DEBUG_ASSOC(priv, "enter:\n"); + + if (!ctx->ht.enabled) + return; + + ctx->ht.protection = + bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; + ctx->ht.non_gf_sta_present = + !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); + + ht_conf->single_chain_sufficient = false; + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + rcu_read_lock(); + sta = ieee80211_find_sta(vif, bss_conf->bssid); + if (sta) { + struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; + int maxstreams; + + maxstreams = (ht_cap->mcs.tx_params & + IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) + >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; + maxstreams += 1; + + if ((ht_cap->mcs.rx_mask[1] == 0) && + (ht_cap->mcs.rx_mask[2] == 0)) + ht_conf->single_chain_sufficient = true; + if (maxstreams <= 1) + ht_conf->single_chain_sufficient = true; + } else { + /* + * If at all, this can only happen through a race + * when the AP disconnects us while we're still + * setting up the connection, in that case mac80211 + * will soon tell us about that. + */ + ht_conf->single_chain_sufficient = true; + } + rcu_read_unlock(); + break; + case NL80211_IFTYPE_ADHOC: + ht_conf->single_chain_sufficient = true; + break; + default: + break; + } + + IWL_DEBUG_ASSOC(priv, "leave\n"); +} + +static inline void iwl_set_no_assoc(struct iwl_priv *priv, + struct ieee80211_vif *vif) +{ + struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); + + /* + * inform the ucode that there is no longer an + * association and that no more packets should be + * sent + */ + ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; + ctx->staging.assoc_id = 0; + iwlcore_commit_rxon(priv, ctx); +} + +static void iwlcore_beacon_update(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct iwl_priv *priv = hw->priv; + unsigned long flags; + __le64 timestamp; + struct sk_buff *skb = ieee80211_beacon_get(hw, vif); + + if (!skb) + return; + + IWL_DEBUG_MAC80211(priv, "enter\n"); + + lockdep_assert_held(&priv->mutex); + + if (!priv->beacon_ctx) { + IWL_ERR(priv, "update beacon but no beacon context!\n"); + dev_kfree_skb(skb); + return; + } + + spin_lock_irqsave(&priv->lock, flags); + + if (priv->beacon_skb) + dev_kfree_skb(priv->beacon_skb); + + priv->beacon_skb = skb; + + timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; + priv->timestamp = le64_to_cpu(timestamp); + + IWL_DEBUG_MAC80211(priv, "leave\n"); + spin_unlock_irqrestore(&priv->lock, flags); + + if (!iwl_is_ready_rf(priv)) { + IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); + return; + } + + priv->cfg->ops->legacy->post_associate(priv); +} + +void iwl_legacy_mac_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changes) +{ + struct iwl_priv *priv = hw->priv; + struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); + int ret; + + if (WARN_ON(!priv->cfg->ops->legacy)) + return; + + IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes); + + if (!iwl_is_alive(priv)) + return; + + mutex_lock(&priv->mutex); + + if (changes & BSS_CHANGED_QOS) { + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + ctx->qos_data.qos_active = bss_conf->qos; + iwl_update_qos(priv, ctx); + spin_unlock_irqrestore(&priv->lock, flags); + } + + if (changes & BSS_CHANGED_BEACON_ENABLED) { + /* + * the add_interface code must make sure we only ever + * have a single interface that could be beaconing at + * any time. + */ + if (vif->bss_conf.enable_beacon) + priv->beacon_ctx = ctx; + else + priv->beacon_ctx = NULL; + } + + if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_AP) { + dev_kfree_skb(priv->beacon_skb); + priv->beacon_skb = ieee80211_beacon_get(hw, vif); + } + + if (changes & BSS_CHANGED_BEACON_INT && vif->type == NL80211_IFTYPE_AP) + iwl_send_rxon_timing(priv, ctx); + + if (changes & BSS_CHANGED_BSSID) { + IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid); + + /* + * If there is currently a HW scan going on in the + * background then we need to cancel it else the RXON + * below/in post_associate will fail. + */ + if (iwl_scan_cancel_timeout(priv, 100)) { + IWL_WARN(priv, "Aborted scan still in progress after 100ms\n"); + IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n"); + mutex_unlock(&priv->mutex); + return; + } + + /* mac80211 only sets assoc when in STATION mode */ + if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) { + memcpy(ctx->staging.bssid_addr, + bss_conf->bssid, ETH_ALEN); + + /* currently needed in a few places */ + memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); + } else { + ctx->staging.filter_flags &= + ~RXON_FILTER_ASSOC_MSK; + } + + } + + /* + * This needs to be after setting the BSSID in case + * mac80211 decides to do both changes at once because + * it will invoke post_associate. + */ + if (vif->type == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON) + iwlcore_beacon_update(hw, vif); + + if (changes & BSS_CHANGED_ERP_PREAMBLE) { + IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n", + bss_conf->use_short_preamble); + if (bss_conf->use_short_preamble) + ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; + else + ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; + } + + if (changes & BSS_CHANGED_ERP_CTS_PROT) { + IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot); + if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) + ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; + else + ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; + if (bss_conf->use_cts_prot) + ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; + else + ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; + } + + if (changes & BSS_CHANGED_BASIC_RATES) { + /* XXX use this information + * + * To do that, remove code from iwl_set_rate() and put something + * like this here: + * + if (A-band) + ctx->staging.ofdm_basic_rates = + bss_conf->basic_rates; + else + ctx->staging.ofdm_basic_rates = + bss_conf->basic_rates >> 4; + ctx->staging.cck_basic_rates = + bss_conf->basic_rates & 0xF; + */ + } + + if (changes & BSS_CHANGED_HT) { + iwl_ht_conf(priv, vif); + + if (priv->cfg->ops->hcmd->set_rxon_chain) + priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); + } + + if (changes & BSS_CHANGED_ASSOC) { + IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc); + if (bss_conf->assoc) { + priv->timestamp = bss_conf->timestamp; + + if (!iwl_is_rfkill(priv)) + priv->cfg->ops->legacy->post_associate(priv); + } else + iwl_set_no_assoc(priv, vif); + } + + if (changes && iwl_is_associated_ctx(ctx) && bss_conf->aid) { + IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n", + changes); + ret = iwl_send_rxon_assoc(priv, ctx); + if (!ret) { + /* Sync active_rxon with latest change. */ + memcpy((void *)&ctx->active, + &ctx->staging, + sizeof(struct iwl_rxon_cmd)); + } + } + + if (changes & BSS_CHANGED_BEACON_ENABLED) { + if (vif->bss_conf.enable_beacon) { + memcpy(ctx->staging.bssid_addr, + bss_conf->bssid, ETH_ALEN); + memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); + priv->cfg->ops->legacy->config_ap(priv); + } else + iwl_set_no_assoc(priv, vif); + } + + if (changes & BSS_CHANGED_IBSS) { + ret = priv->cfg->ops->legacy->manage_ibss_station(priv, vif, + bss_conf->ibss_joined); + if (ret) + IWL_ERR(priv, "failed to %s IBSS station %pM\n", + bss_conf->ibss_joined ? "add" : "remove", + bss_conf->bssid); + } + + mutex_unlock(&priv->mutex); + + IWL_DEBUG_MAC80211(priv, "leave\n"); +} +EXPORT_SYMBOL(iwl_legacy_mac_bss_info_changed); + +irqreturn_t iwl_isr_legacy(int irq, void *data) +{ + struct iwl_priv *priv = data; + u32 inta, inta_mask; + u32 inta_fh; + unsigned long flags; + if (!priv) + return IRQ_NONE; + + spin_lock_irqsave(&priv->lock, flags); + + /* Disable (but don't clear!) interrupts here to avoid + * back-to-back ISRs and sporadic interrupts from our NIC. + * If we have something to service, the tasklet will re-enable ints. + * If we *don't* have something, we'll re-enable before leaving here. */ + inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ + iwl_write32(priv, CSR_INT_MASK, 0x00000000); + + /* Discover which interrupts are active/pending */ + inta = iwl_read32(priv, CSR_INT); + inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); + + /* Ignore interrupt if there's nothing in NIC to service. + * This may be due to IRQ shared with another device, + * or due to sporadic interrupts thrown from our NIC. */ + if (!inta && !inta_fh) { + IWL_DEBUG_ISR(priv, + "Ignore interrupt, inta == 0, inta_fh == 0\n"); + goto none; + } + + if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { + /* Hardware disappeared. It might have already raised + * an interrupt */ + IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); + goto unplugged; + } + + IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", + inta, inta_mask, inta_fh); + + inta &= ~CSR_INT_BIT_SCD; + + /* iwl_irq_tasklet() will service interrupts and re-enable them */ + if (likely(inta || inta_fh)) + tasklet_schedule(&priv->irq_tasklet); + +unplugged: + spin_unlock_irqrestore(&priv->lock, flags); + return IRQ_HANDLED; + +none: + /* re-enable interrupts here since we don't have anything to service. */ + /* only Re-enable if disabled by irq */ + if (test_bit(STATUS_INT_ENABLED, &priv->status)) + iwl_enable_interrupts(priv); + spin_unlock_irqrestore(&priv->lock, flags); + return IRQ_NONE; +} +EXPORT_SYMBOL(iwl_isr_legacy); + +/* + * iwl_legacy_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this + * function. + */ +void iwl_legacy_tx_cmd_protection(struct iwl_priv *priv, + struct ieee80211_tx_info *info, + __le16 fc, __le32 *tx_flags) +{ + if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { + *tx_flags |= TX_CMD_FLG_RTS_MSK; + *tx_flags &= ~TX_CMD_FLG_CTS_MSK; + *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; + + if (!ieee80211_is_mgmt(fc)) + return; + + switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { + case cpu_to_le16(IEEE80211_STYPE_AUTH): + case cpu_to_le16(IEEE80211_STYPE_DEAUTH): + case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): + case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): + *tx_flags &= ~TX_CMD_FLG_RTS_MSK; + *tx_flags |= TX_CMD_FLG_CTS_MSK; + break; + } + } else if (info->control.rates[0].flags & + IEEE80211_TX_RC_USE_CTS_PROTECT) { + *tx_flags &= ~TX_CMD_FLG_RTS_MSK; + *tx_flags |= TX_CMD_FLG_CTS_MSK; + *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; + } +} +EXPORT_SYMBOL(iwl_legacy_tx_cmd_protection); diff --git a/drivers/net/wireless/iwlwifi/iwl-legacy.h b/drivers/net/wireless/iwlwifi/iwl-legacy.h new file mode 100644 index 000000000000..9f7b2f935964 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl-legacy.h @@ -0,0 +1,79 @@ +/****************************************************************************** + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + * BSD LICENSE + * + * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + *****************************************************************************/ + +#ifndef __iwl_legacy_h__ +#define __iwl_legacy_h__ + +/* mac80211 handlers */ +int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed); +void iwl_legacy_mac_reset_tsf(struct ieee80211_hw *hw); +void iwl_legacy_mac_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changes); +void iwl_legacy_tx_cmd_protection(struct iwl_priv *priv, + struct ieee80211_tx_info *info, + __le16 fc, __le32 *tx_flags); + +irqreturn_t iwl_isr_legacy(int irq, void *data); + +#endif /* __iwl_legacy_h__ */ diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c index 576795e2c75b..1d1bf3234d8d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-power.c +++ b/drivers/net/wireless/iwlwifi/iwl-power.c @@ -425,6 +425,7 @@ int iwl_power_set_mode(struct iwl_priv *priv, struct iwl_powertable_cmd *cmd, return ret; } +EXPORT_SYMBOL(iwl_power_set_mode); int iwl_power_update_mode(struct iwl_priv *priv, bool force) { @@ -433,6 +434,7 @@ int iwl_power_update_mode(struct iwl_priv *priv, bool force) iwl_power_build_cmd(priv, &cmd); return iwl_power_set_mode(priv, &cmd, force); } +EXPORT_SYMBOL(iwl_power_update_mode); /* initialize to default */ void iwl_power_initialize(struct iwl_priv *priv) @@ -446,3 +448,4 @@ void iwl_power_initialize(struct iwl_priv *priv) memset(&priv->power_data.sleep_cmd, 0, sizeof(priv->power_data.sleep_cmd)); } +EXPORT_SYMBOL(iwl_power_initialize); diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c index a21f6fe10fb7..bc89393fb696 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-rx.c @@ -118,6 +118,7 @@ int iwl_rx_queue_space(const struct iwl_rx_queue *q) s = 0; return s; } +EXPORT_SYMBOL(iwl_rx_queue_space); /** * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue @@ -169,6 +170,7 @@ void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q exit_unlock: spin_unlock_irqrestore(&q->lock, flags); } +EXPORT_SYMBOL(iwl_rx_queue_update_write_ptr); int iwl_rx_queue_alloc(struct iwl_priv *priv) { @@ -209,6 +211,7 @@ err_rb: err_bd: return -ENOMEM; } +EXPORT_SYMBOL(iwl_rx_queue_alloc); void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv, @@ -226,6 +229,7 @@ void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv, memcpy(&priv->measure_report, report, sizeof(*report)); priv->measurement_status |= MEASUREMENT_READY; } +EXPORT_SYMBOL(iwl_rx_spectrum_measure_notif); void iwl_recover_from_statistics(struct iwl_priv *priv, struct iwl_rx_packet *pkt) @@ -245,6 +249,7 @@ void iwl_recover_from_statistics(struct iwl_priv *priv, !priv->cfg->ops->lib->check_plcp_health(priv, pkt)) iwl_force_reset(priv, IWL_RF_RESET, false); } +EXPORT_SYMBOL(iwl_recover_from_statistics); /* * returns non-zero if packet should be dropped @@ -297,3 +302,4 @@ int iwl_set_decrypted_flag(struct iwl_priv *priv, } return 0; } +EXPORT_SYMBOL(iwl_set_decrypted_flag); diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c index faa6d34cb658..08f1bea8b652 100644 --- a/drivers/net/wireless/iwlwifi/iwl-scan.c +++ b/drivers/net/wireless/iwlwifi/iwl-scan.c @@ -155,6 +155,7 @@ int iwl_scan_cancel(struct iwl_priv *priv) queue_work(priv->workqueue, &priv->abort_scan); return 0; } +EXPORT_SYMBOL(iwl_scan_cancel); /** * iwl_scan_cancel_timeout - Cancel any currently executing HW scan @@ -179,6 +180,7 @@ int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms) return test_bit(STATUS_SCAN_HW, &priv->status); } +EXPORT_SYMBOL(iwl_scan_cancel_timeout); /* Service response to REPLY_SCAN_CMD (0x80) */ static void iwl_rx_reply_scan(struct iwl_priv *priv, @@ -286,6 +288,7 @@ void iwl_setup_rx_scan_handlers(struct iwl_priv *priv) priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] = iwl_rx_scan_complete_notif; } +EXPORT_SYMBOL(iwl_setup_rx_scan_handlers); inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, enum ieee80211_band band, @@ -298,6 +301,7 @@ inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, return IWL_ACTIVE_DWELL_TIME_24 + IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1); } +EXPORT_SYMBOL(iwl_get_active_dwell_time); u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, enum ieee80211_band band, @@ -329,6 +333,7 @@ u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, return passive; } +EXPORT_SYMBOL(iwl_get_passive_dwell_time); void iwl_init_scan_params(struct iwl_priv *priv) { @@ -338,6 +343,7 @@ void iwl_init_scan_params(struct iwl_priv *priv) if (!priv->scan_tx_ant[IEEE80211_BAND_2GHZ]) priv->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx; } +EXPORT_SYMBOL(iwl_init_scan_params); static int __must_check iwl_scan_initiate(struct iwl_priv *priv, struct ieee80211_vif *vif, @@ -433,6 +439,7 @@ out_unlock: return ret; } +EXPORT_SYMBOL(iwl_mac_hw_scan); /* * internal short scan, this function should only been called while associated. @@ -529,6 +536,7 @@ u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame, return (u16)len; } +EXPORT_SYMBOL(iwl_fill_probe_req); static void iwl_bg_abort_scan(struct work_struct *work) { @@ -613,6 +621,7 @@ void iwl_setup_scan_deferred_work(struct iwl_priv *priv) INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan); INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check); } +EXPORT_SYMBOL(iwl_setup_scan_deferred_work); void iwl_cancel_scan_deferred_work(struct iwl_priv *priv) { @@ -626,3 +635,4 @@ void iwl_cancel_scan_deferred_work(struct iwl_priv *priv) mutex_unlock(&priv->mutex); } } +EXPORT_SYMBOL(iwl_cancel_scan_deferred_work); diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c index bc90a12408a3..49493d176515 100644 --- a/drivers/net/wireless/iwlwifi/iwl-sta.c +++ b/drivers/net/wireless/iwlwifi/iwl-sta.c @@ -169,6 +169,7 @@ int iwl_send_add_sta(struct iwl_priv *priv, return ret; } +EXPORT_SYMBOL(iwl_send_add_sta); static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, struct ieee80211_sta *sta, @@ -315,6 +316,7 @@ u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, return sta_id; } +EXPORT_SYMBOL_GPL(iwl_prep_station); #define STA_WAIT_TIMEOUT (HZ/2) @@ -377,6 +379,7 @@ int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, *sta_id_r = sta_id; return ret; } +EXPORT_SYMBOL(iwl_add_station_common); /** * iwl_sta_ucode_deactivate - deactivate ucode status for a station @@ -510,6 +513,7 @@ out_err: spin_unlock_irqrestore(&priv->sta_lock, flags); return -EINVAL; } +EXPORT_SYMBOL_GPL(iwl_remove_station); /** * iwl_clear_ucode_stations - clear ucode station table bits @@ -544,6 +548,7 @@ void iwl_clear_ucode_stations(struct iwl_priv *priv, if (!cleared) IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n"); } +EXPORT_SYMBOL(iwl_clear_ucode_stations); /** * iwl_restore_stations() - Restore driver known stations to device @@ -620,6 +625,7 @@ void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) else IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n"); } +EXPORT_SYMBOL(iwl_restore_stations); void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { @@ -662,6 +668,7 @@ void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx) priv->stations[sta_id].sta.sta.addr, ret); iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true); } +EXPORT_SYMBOL(iwl_reprogram_ap_sta); int iwl_get_free_ucode_key_index(struct iwl_priv *priv) { @@ -673,6 +680,7 @@ int iwl_get_free_ucode_key_index(struct iwl_priv *priv) return WEP_INVALID_OFFSET; } +EXPORT_SYMBOL(iwl_get_free_ucode_key_index); void iwl_dealloc_bcast_stations(struct iwl_priv *priv) { @@ -692,6 +700,7 @@ void iwl_dealloc_bcast_stations(struct iwl_priv *priv) } spin_unlock_irqrestore(&priv->sta_lock, flags); } +EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_stations); #ifdef CONFIG_IWLWIFI_DEBUG static void iwl_dump_lq_cmd(struct iwl_priv *priv, @@ -801,6 +810,7 @@ int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, } return ret; } +EXPORT_SYMBOL(iwl_send_lq_cmd); int iwl_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, @@ -822,3 +832,4 @@ int iwl_mac_sta_remove(struct ieee80211_hw *hw, mutex_unlock(&priv->mutex); return ret; } +EXPORT_SYMBOL(iwl_mac_sta_remove); diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c index 7e607d39da1c..073b6ce6141c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-tx.c @@ -84,6 +84,7 @@ void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq) } txq->need_update = 0; } +EXPORT_SYMBOL(iwl_txq_update_write_ptr); /** * iwl_tx_queue_free - Deallocate DMA queue. @@ -130,6 +131,7 @@ void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id) /* 0-fill queue descriptor structure */ memset(txq, 0, sizeof(*txq)); } +EXPORT_SYMBOL(iwl_tx_queue_free); /** * iwl_cmd_queue_free - Deallocate DMA queue. @@ -191,6 +193,7 @@ void iwl_cmd_queue_free(struct iwl_priv *priv) /* 0-fill queue descriptor structure */ memset(txq, 0, sizeof(*txq)); } +EXPORT_SYMBOL(iwl_cmd_queue_free); /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** * DMA services @@ -230,6 +233,7 @@ int iwl_queue_space(const struct iwl_queue *q) s = 0; return s; } +EXPORT_SYMBOL(iwl_queue_space); /** @@ -380,6 +384,7 @@ out_free_arrays: return -ENOMEM; } +EXPORT_SYMBOL(iwl_tx_queue_init); void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq, int slots_num, u32 txq_id) @@ -399,6 +404,7 @@ void iwl_tx_queue_reset(struct iwl_priv *priv, struct iwl_tx_queue *txq, /* Tell device where to find queue */ priv->cfg->ops->lib->txq_init(priv, txq); } +EXPORT_SYMBOL(iwl_tx_queue_reset); /*************** HOST COMMAND QUEUE FUNCTIONS *****/ @@ -635,3 +641,4 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) } meta->flags = 0; } +EXPORT_SYMBOL(iwl_tx_cmd_complete); diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c new file mode 100644 index 000000000000..adcef735180a --- /dev/null +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -0,0 +1,4334 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. + * + * Portions of this file are derived from the ipw3945 project, as well + * as portions of the ieee80211 subsystem header files. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * Intel Linux Wireless <ilw@linux.intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + *****************************************************************************/ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/pci-aspm.h> +#include <linux/slab.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/sched.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/wireless.h> +#include <linux/firmware.h> +#include <linux/etherdevice.h> +#include <linux/if_arp.h> + +#include <net/ieee80211_radiotap.h> +#include <net/mac80211.h> + +#include <asm/div64.h> + +#define DRV_NAME "iwl3945" + +#include "iwl-fh.h" +#include "iwl-3945-fh.h" +#include "iwl-commands.h" +#include "iwl-sta.h" +#include "iwl-3945.h" +#include "iwl-core.h" +#include "iwl-helpers.h" +#include "iwl-dev.h" +#include "iwl-spectrum.h" +#include "iwl-legacy.h" + +/* + * module name, copyright, version, etc. + */ + +#define DRV_DESCRIPTION \ +"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux" + +#ifdef CONFIG_IWLWIFI_DEBUG +#define VD "d" +#else +#define VD +#endif + +/* + * add "s" to indicate spectrum measurement included. + * we add it here to be consistent with previous releases in which + * this was configurable. + */ +#define DRV_VERSION IWLWIFI_VERSION VD "s" +#define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation" +#define DRV_AUTHOR "<ilw@linux.intel.com>" + +MODULE_DESCRIPTION(DRV_DESCRIPTION); +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); +MODULE_LICENSE("GPL"); + + /* module parameters */ +struct iwl_mod_params iwl3945_mod_params = { + .sw_crypto = 1, + .restart_fw = 1, + /* the rest are 0 by default */ +}; + +/** + * iwl3945_get_antenna_flags - Get antenna flags for RXON command + * @priv: eeprom and antenna fields are used to determine antenna flags + * + * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed + * iwl3945_mod_params.antenna specifies the antenna diversity mode: + * + * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself + * IWL_ANTENNA_MAIN - Force MAIN antenna + * IWL_ANTENNA_AUX - Force AUX antenna + */ +__le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv) +{ + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + + switch (iwl3945_mod_params.antenna) { + case IWL_ANTENNA_DIVERSITY: + return 0; + + case IWL_ANTENNA_MAIN: + if (eeprom->antenna_switch_type) + return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; + return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; + + case IWL_ANTENNA_AUX: + if (eeprom->antenna_switch_type) + return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; + return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; + } + + /* bad antenna selector value */ + IWL_ERR(priv, "Bad antenna selector value (0x%x)\n", + iwl3945_mod_params.antenna); + + return 0; /* "diversity" is default if error */ +} + +static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv, + struct ieee80211_key_conf *keyconf, + u8 sta_id) +{ + unsigned long flags; + __le16 key_flags = 0; + int ret; + + key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); + key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); + + if (sta_id == priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id) + key_flags |= STA_KEY_MULTICAST_MSK; + + keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + keyconf->hw_key_idx = keyconf->keyidx; + key_flags &= ~STA_KEY_FLG_INVALID; + + spin_lock_irqsave(&priv->sta_lock, flags); + priv->stations[sta_id].keyinfo.cipher = keyconf->cipher; + priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; + memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, + keyconf->keylen); + + memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, + keyconf->keylen); + + if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) + == STA_KEY_FLG_NO_ENC) + priv->stations[sta_id].sta.key.key_offset = + iwl_get_free_ucode_key_index(priv); + /* else, we are overriding an existing key => no need to allocated room + * in uCode. */ + + WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, + "no space for a new key"); + + priv->stations[sta_id].sta.key.key_flags = key_flags; + priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; + priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; + + IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n"); + + ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); + + spin_unlock_irqrestore(&priv->sta_lock, flags); + + return ret; +} + +static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv, + struct ieee80211_key_conf *keyconf, + u8 sta_id) +{ + return -EOPNOTSUPP; +} + +static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv, + struct ieee80211_key_conf *keyconf, + u8 sta_id) +{ + return -EOPNOTSUPP; +} + +static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id) +{ + unsigned long flags; + struct iwl_addsta_cmd sta_cmd; + + spin_lock_irqsave(&priv->sta_lock, flags); + memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key)); + memset(&priv->stations[sta_id].sta.key, 0, + sizeof(struct iwl4965_keyinfo)); + priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC; + priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; + priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; + memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); + spin_unlock_irqrestore(&priv->sta_lock, flags); + + IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n"); + return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); +} + +static int iwl3945_set_dynamic_key(struct iwl_priv *priv, + struct ieee80211_key_conf *keyconf, u8 sta_id) +{ + int ret = 0; + + keyconf->hw_key_idx = HW_KEY_DYNAMIC; + + switch (keyconf->cipher) { + case WLAN_CIPHER_SUITE_CCMP: + ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id); + break; + case WLAN_CIPHER_SUITE_TKIP: + ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id); + break; + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id); + break; + default: + IWL_ERR(priv, "Unknown alg: %s alg=%x\n", __func__, + keyconf->cipher); + ret = -EINVAL; + } + + IWL_DEBUG_WEP(priv, "Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n", + keyconf->cipher, keyconf->keylen, keyconf->keyidx, + sta_id, ret); + + return ret; +} + +static int iwl3945_remove_static_key(struct iwl_priv *priv) +{ + int ret = -EOPNOTSUPP; + + return ret; +} + +static int iwl3945_set_static_key(struct iwl_priv *priv, + struct ieee80211_key_conf *key) +{ + if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || + key->cipher == WLAN_CIPHER_SUITE_WEP104) + return -EOPNOTSUPP; + + IWL_ERR(priv, "Static key invalid: cipher %x\n", key->cipher); + return -EINVAL; +} + +static void iwl3945_clear_free_frames(struct iwl_priv *priv) +{ + struct list_head *element; + + IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n", + priv->frames_count); + + while (!list_empty(&priv->free_frames)) { + element = priv->free_frames.next; + list_del(element); + kfree(list_entry(element, struct iwl3945_frame, list)); + priv->frames_count--; + } + + if (priv->frames_count) { + IWL_WARN(priv, "%d frames still in use. Did we lose one?\n", + priv->frames_count); + priv->frames_count = 0; + } +} + +static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv) +{ + struct iwl3945_frame *frame; + struct list_head *element; + if (list_empty(&priv->free_frames)) { + frame = kzalloc(sizeof(*frame), GFP_KERNEL); + if (!frame) { + IWL_ERR(priv, "Could not allocate frame!\n"); + return NULL; + } + + priv->frames_count++; + return frame; + } + + element = priv->free_frames.next; + list_del(element); + return list_entry(element, struct iwl3945_frame, list); +} + +static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame) +{ + memset(frame, 0, sizeof(*frame)); + list_add(&frame->list, &priv->free_frames); +} + +unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv, + struct ieee80211_hdr *hdr, + int left) +{ + + if (!iwl_is_associated(priv, IWL_RXON_CTX_BSS) || !priv->beacon_skb) + return 0; + + if (priv->beacon_skb->len > left) + return 0; + + memcpy(hdr, priv->beacon_skb->data, priv->beacon_skb->len); + + return priv->beacon_skb->len; +} + +static int iwl3945_send_beacon_cmd(struct iwl_priv *priv) +{ + struct iwl3945_frame *frame; + unsigned int frame_size; + int rc; + u8 rate; + + frame = iwl3945_get_free_frame(priv); + + if (!frame) { + IWL_ERR(priv, "Could not obtain free frame buffer for beacon " + "command.\n"); + return -ENOMEM; + } + + rate = iwl_rate_get_lowest_plcp(priv, + &priv->contexts[IWL_RXON_CTX_BSS]); + + frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate); + + rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size, + &frame->u.cmd[0]); + + iwl3945_free_frame(priv, frame); + + return rc; +} + +static void iwl3945_unset_hw_params(struct iwl_priv *priv) +{ + if (priv->_3945.shared_virt) + dma_free_coherent(&priv->pci_dev->dev, + sizeof(struct iwl3945_shared), + priv->_3945.shared_virt, + priv->_3945.shared_phys); +} + +static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv, + struct ieee80211_tx_info *info, + struct iwl_device_cmd *cmd, + struct sk_buff *skb_frag, + int sta_id) +{ + struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload; + struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo; + + tx_cmd->sec_ctl = 0; + + switch (keyinfo->cipher) { + case WLAN_CIPHER_SUITE_CCMP: + tx_cmd->sec_ctl = TX_CMD_SEC_CCM; + memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen); + IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n"); + break; + + case WLAN_CIPHER_SUITE_TKIP: + break; + + case WLAN_CIPHER_SUITE_WEP104: + tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; + /* fall through */ + case WLAN_CIPHER_SUITE_WEP40: + tx_cmd->sec_ctl |= TX_CMD_SEC_WEP | + (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT; + + memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen); + + IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " + "with key %d\n", info->control.hw_key->hw_key_idx); + break; + + default: + IWL_ERR(priv, "Unknown encode cipher %x\n", keyinfo->cipher); + break; + } +} + +/* + * handle build REPLY_TX command notification. + */ +static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv, + struct iwl_device_cmd *cmd, + struct ieee80211_tx_info *info, + struct ieee80211_hdr *hdr, u8 std_id) +{ + struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload; + __le32 tx_flags = tx_cmd->tx_flags; + __le16 fc = hdr->frame_control; + + tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; + if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) { + tx_flags |= TX_CMD_FLG_ACK_MSK; + if (ieee80211_is_mgmt(fc)) + tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; + if (ieee80211_is_probe_resp(fc) && + !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) + tx_flags |= TX_CMD_FLG_TSF_MSK; + } else { + tx_flags &= (~TX_CMD_FLG_ACK_MSK); + tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; + } + + tx_cmd->sta_id = std_id; + if (ieee80211_has_morefrags(fc)) + tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; + + if (ieee80211_is_data_qos(fc)) { + u8 *qc = ieee80211_get_qos_ctl(hdr); + tx_cmd->tid_tspec = qc[0] & 0xf; + tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; + } else { + tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; + } + + priv->cfg->ops->utils->tx_cmd_protection(priv, info, fc, &tx_flags); + + tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); + if (ieee80211_is_mgmt(fc)) { + if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) + tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); + else + tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); + } else { + tx_cmd->timeout.pm_frame_timeout = 0; + } + + tx_cmd->driver_txop = 0; + tx_cmd->tx_flags = tx_flags; + tx_cmd->next_frame_len = 0; +} + +/* + * start REPLY_TX command process + */ +static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct iwl3945_tx_cmd *tx_cmd; + struct iwl_tx_queue *txq = NULL; + struct iwl_queue *q = NULL; + struct iwl_device_cmd *out_cmd; + struct iwl_cmd_meta *out_meta; + dma_addr_t phys_addr; + dma_addr_t txcmd_phys; + int txq_id = skb_get_queue_mapping(skb); + u16 len, idx, hdr_len; + u8 id; + u8 unicast; + u8 sta_id; + u8 tid = 0; + __le16 fc; + u8 wait_write_ptr = 0; + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + if (iwl_is_rfkill(priv)) { + IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); + goto drop_unlock; + } + + if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) { + IWL_ERR(priv, "ERROR: No TX rate available.\n"); + goto drop_unlock; + } + + unicast = !is_multicast_ether_addr(hdr->addr1); + id = 0; + + fc = hdr->frame_control; + +#ifdef CONFIG_IWLWIFI_DEBUG + if (ieee80211_is_auth(fc)) + IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); + else if (ieee80211_is_assoc_req(fc)) + IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); + else if (ieee80211_is_reassoc_req(fc)) + IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); +#endif + + spin_unlock_irqrestore(&priv->lock, flags); + + hdr_len = ieee80211_hdrlen(fc); + + /* Find index into station table for destination station */ + sta_id = iwl_sta_id_or_broadcast( + priv, &priv->contexts[IWL_RXON_CTX_BSS], + info->control.sta); + if (sta_id == IWL_INVALID_STATION) { + IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", + hdr->addr1); + goto drop; + } + + IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id); + + if (ieee80211_is_data_qos(fc)) { + u8 *qc = ieee80211_get_qos_ctl(hdr); + tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; + if (unlikely(tid >= MAX_TID_COUNT)) + goto drop; + } + + /* Descriptor for chosen Tx queue */ + txq = &priv->txq[txq_id]; + q = &txq->q; + + if ((iwl_queue_space(q) < q->high_mark)) + goto drop; + + spin_lock_irqsave(&priv->lock, flags); + + idx = get_cmd_index(q, q->write_ptr, 0); + + /* Set up driver data for this TFD */ + memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info)); + txq->txb[q->write_ptr].skb = skb; + txq->txb[q->write_ptr].ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + /* Init first empty entry in queue's array of Tx/cmd buffers */ + out_cmd = txq->cmd[idx]; + out_meta = &txq->meta[idx]; + tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload; + memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); + memset(tx_cmd, 0, sizeof(*tx_cmd)); + + /* + * Set up the Tx-command (not MAC!) header. + * Store the chosen Tx queue and TFD index within the sequence field; + * after Tx, uCode's Tx response will return this value so driver can + * locate the frame within the tx queue and do post-tx processing. + */ + out_cmd->hdr.cmd = REPLY_TX; + out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | + INDEX_TO_SEQ(q->write_ptr))); + + /* Copy MAC header from skb into command buffer */ + memcpy(tx_cmd->hdr, hdr, hdr_len); + + + if (info->control.hw_key) + iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id); + + /* TODO need this for burst mode later on */ + iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id); + + /* set is_hcca to 0; it probably will never be implemented */ + iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0); + + /* Total # bytes to be transmitted */ + len = (u16)skb->len; + tx_cmd->len = cpu_to_le16(len); + + iwl_dbg_log_tx_data_frame(priv, len, hdr); + iwl_update_stats(priv, true, fc, len); + tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK; + tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK; + + if (!ieee80211_has_morefrags(hdr->frame_control)) { + txq->need_update = 1; + } else { + wait_write_ptr = 1; + txq->need_update = 0; + } + + IWL_DEBUG_TX(priv, "sequence nr = 0X%x\n", + le16_to_cpu(out_cmd->hdr.sequence)); + IWL_DEBUG_TX(priv, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags)); + iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd)); + iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr, + ieee80211_hdrlen(fc)); + + /* + * Use the first empty entry in this queue's command buffer array + * to contain the Tx command and MAC header concatenated together + * (payload data will be in another buffer). + * Size of this varies, due to varying MAC header length. + * If end is not dword aligned, we'll have 2 extra bytes at the end + * of the MAC header (device reads on dword boundaries). + * We'll tell device about this padding later. + */ + len = sizeof(struct iwl3945_tx_cmd) + + sizeof(struct iwl_cmd_header) + hdr_len; + len = (len + 3) & ~3; + + /* Physical address of this Tx command's header (not MAC header!), + * within command buffer array. */ + txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr, + len, PCI_DMA_TODEVICE); + /* we do not map meta data ... so we can safely access address to + * provide to unmap command*/ + dma_unmap_addr_set(out_meta, mapping, txcmd_phys); + dma_unmap_len_set(out_meta, len, len); + + /* Add buffer containing Tx command and MAC(!) header to TFD's + * first entry */ + priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq, + txcmd_phys, len, 1, 0); + + + /* Set up TFD's 2nd entry to point directly to remainder of skb, + * if any (802.11 null frames have no payload). */ + len = skb->len - hdr_len; + if (len) { + phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len, + len, PCI_DMA_TODEVICE); + priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq, + phys_addr, len, + 0, U32_PAD(len)); + } + + + /* Tell device the write index *just past* this latest filled TFD */ + q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); + iwl_txq_update_write_ptr(priv, txq); + spin_unlock_irqrestore(&priv->lock, flags); + + if ((iwl_queue_space(q) < q->high_mark) + && priv->mac80211_registered) { + if (wait_write_ptr) { + spin_lock_irqsave(&priv->lock, flags); + txq->need_update = 1; + iwl_txq_update_write_ptr(priv, txq); + spin_unlock_irqrestore(&priv->lock, flags); + } + + iwl_stop_queue(priv, txq); + } + + return 0; + +drop_unlock: + spin_unlock_irqrestore(&priv->lock, flags); +drop: + return -1; +} + +static int iwl3945_get_measurement(struct iwl_priv *priv, + struct ieee80211_measurement_params *params, + u8 type) +{ + struct iwl_spectrum_cmd spectrum; + struct iwl_rx_packet *pkt; + struct iwl_host_cmd cmd = { + .id = REPLY_SPECTRUM_MEASUREMENT_CMD, + .data = (void *)&spectrum, + .flags = CMD_WANT_SKB, + }; + u32 add_time = le64_to_cpu(params->start_time); + int rc; + int spectrum_resp_status; + int duration = le16_to_cpu(params->duration); + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + if (iwl_is_associated(priv, IWL_RXON_CTX_BSS)) + add_time = iwl_usecs_to_beacons(priv, + le64_to_cpu(params->start_time) - priv->_3945.last_tsf, + le16_to_cpu(ctx->timing.beacon_interval)); + + memset(&spectrum, 0, sizeof(spectrum)); + + spectrum.channel_count = cpu_to_le16(1); + spectrum.flags = + RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK; + spectrum.filter_flags = MEASUREMENT_FILTER_FLAG; + cmd.len = sizeof(spectrum); + spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len)); + + if (iwl_is_associated(priv, IWL_RXON_CTX_BSS)) + spectrum.start_time = + iwl_add_beacon_time(priv, + priv->_3945.last_beacon_time, add_time, + le16_to_cpu(ctx->timing.beacon_interval)); + else + spectrum.start_time = 0; + + spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT); + spectrum.channels[0].channel = params->channel; + spectrum.channels[0].type = type; + if (ctx->active.flags & RXON_FLG_BAND_24G_MSK) + spectrum.flags |= RXON_FLG_BAND_24G_MSK | + RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK; + + rc = iwl_send_cmd_sync(priv, &cmd); + if (rc) + return rc; + + pkt = (struct iwl_rx_packet *)cmd.reply_page; + if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { + IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n"); + rc = -EIO; + } + + spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status); + switch (spectrum_resp_status) { + case 0: /* Command will be handled */ + if (pkt->u.spectrum.id != 0xff) { + IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n", + pkt->u.spectrum.id); + priv->measurement_status &= ~MEASUREMENT_READY; + } + priv->measurement_status |= MEASUREMENT_ACTIVE; + rc = 0; + break; + + case 1: /* Command will not be handled */ + rc = -EAGAIN; + break; + } + + iwl_free_pages(priv, cmd.reply_page); + + return rc; +} + +static void iwl3945_rx_reply_alive(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl_alive_resp *palive; + struct delayed_work *pwork; + + palive = &pkt->u.alive_frame; + + IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision " + "0x%01X 0x%01X\n", + palive->is_valid, palive->ver_type, + palive->ver_subtype); + + if (palive->ver_subtype == INITIALIZE_SUBTYPE) { + IWL_DEBUG_INFO(priv, "Initialization Alive received.\n"); + memcpy(&priv->card_alive_init, &pkt->u.alive_frame, + sizeof(struct iwl_alive_resp)); + pwork = &priv->init_alive_start; + } else { + IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); + memcpy(&priv->card_alive, &pkt->u.alive_frame, + sizeof(struct iwl_alive_resp)); + pwork = &priv->alive_start; + iwl3945_disable_events(priv); + } + + /* We delay the ALIVE response by 5ms to + * give the HW RF Kill time to activate... */ + if (palive->is_valid == UCODE_VALID_OK) + queue_delayed_work(priv->workqueue, pwork, + msecs_to_jiffies(5)); + else + IWL_WARN(priv, "uCode did not respond OK.\n"); +} + +static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ +#ifdef CONFIG_IWLWIFI_DEBUG + struct iwl_rx_packet *pkt = rxb_addr(rxb); +#endif + + IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status); +} + +static void iwl3945_bg_beacon_update(struct work_struct *work) +{ + struct iwl_priv *priv = + container_of(work, struct iwl_priv, beacon_update); + struct sk_buff *beacon; + + /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ + beacon = ieee80211_beacon_get(priv->hw, + priv->contexts[IWL_RXON_CTX_BSS].vif); + + if (!beacon) { + IWL_ERR(priv, "update beacon failed\n"); + return; + } + + mutex_lock(&priv->mutex); + /* new beacon skb is allocated every time; dispose previous.*/ + if (priv->beacon_skb) + dev_kfree_skb(priv->beacon_skb); + + priv->beacon_skb = beacon; + mutex_unlock(&priv->mutex); + + iwl3945_send_beacon_cmd(priv); +} + +static void iwl3945_rx_beacon_notif(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status); +#ifdef CONFIG_IWLWIFI_DEBUG + u8 rate = beacon->beacon_notify_hdr.rate; + + IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d " + "tsf %d %d rate %d\n", + le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK, + beacon->beacon_notify_hdr.failure_frame, + le32_to_cpu(beacon->ibss_mgr_status), + le32_to_cpu(beacon->high_tsf), + le32_to_cpu(beacon->low_tsf), rate); +#endif + + priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); + + if ((priv->iw_mode == NL80211_IFTYPE_AP) && + (!test_bit(STATUS_EXIT_PENDING, &priv->status))) + queue_work(priv->workqueue, &priv->beacon_update); +} + +/* Handle notification from uCode that card's power state is changing + * due to software, hardware, or critical temperature RFKILL */ +static void iwl3945_rx_card_state_notif(struct iwl_priv *priv, + struct iwl_rx_mem_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); + unsigned long status = priv->status; + + IWL_WARN(priv, "Card state received: HW:%s SW:%s\n", + (flags & HW_CARD_DISABLED) ? "Kill" : "On", + (flags & SW_CARD_DISABLED) ? "Kill" : "On"); + + iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, + CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); + + if (flags & HW_CARD_DISABLED) + set_bit(STATUS_RF_KILL_HW, &priv->status); + else + clear_bit(STATUS_RF_KILL_HW, &priv->status); + + + iwl_scan_cancel(priv); + + if ((test_bit(STATUS_RF_KILL_HW, &status) != + test_bit(STATUS_RF_KILL_HW, &priv->status))) + wiphy_rfkill_set_hw_state(priv->hw->wiphy, + test_bit(STATUS_RF_KILL_HW, &priv->status)); + else + wake_up_interruptible(&priv->wait_command_queue); +} + +/** + * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks + * + * Setup the RX handlers for each of the reply types sent from the uCode + * to the host. + * + * This function chains into the hardware specific files for them to setup + * any hardware specific handlers as well. + */ +static void iwl3945_setup_rx_handlers(struct iwl_priv *priv) +{ + priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive; + priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta; + priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error; + priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa; + priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] = + iwl_rx_spectrum_measure_notif; + priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif; + priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] = + iwl_rx_pm_debug_statistics_notif; + priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif; + + /* + * The same handler is used for both the REPLY to a discrete + * statistics request from the host as well as for the periodic + * statistics notifications (after received beacons) from the uCode. + */ + priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_reply_statistics; + priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics; + + iwl_setup_rx_scan_handlers(priv); + priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif; + + /* Set up hardware specific Rx handlers */ + iwl3945_hw_rx_handler_setup(priv); +} + +/************************** RX-FUNCTIONS ****************************/ +/* + * Rx theory of operation + * + * The host allocates 32 DMA target addresses and passes the host address + * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is + * 0 to 31 + * + * Rx Queue Indexes + * The host/firmware share two index registers for managing the Rx buffers. + * + * The READ index maps to the first position that the firmware may be writing + * to -- the driver can read up to (but not including) this position and get + * good data. + * The READ index is managed by the firmware once the card is enabled. + * + * The WRITE index maps to the last position the driver has read from -- the + * position preceding WRITE is the last slot the firmware can place a packet. + * + * The queue is empty (no good data) if WRITE = READ - 1, and is full if + * WRITE = READ. + * + * During initialization, the host sets up the READ queue position to the first + * INDEX position, and WRITE to the last (READ - 1 wrapped) + * + * When the firmware places a packet in a buffer, it will advance the READ index + * and fire the RX interrupt. The driver can then query the READ index and + * process as many packets as possible, moving the WRITE index forward as it + * resets the Rx queue buffers with new memory. + * + * The management in the driver is as follows: + * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When + * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled + * to replenish the iwl->rxq->rx_free. + * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the + * iwl->rxq is replenished and the READ INDEX is updated (updating the + * 'processed' and 'read' driver indexes as well) + * + A received packet is processed and handed to the kernel network stack, + * detached from the iwl->rxq. The driver 'processed' index is updated. + * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free + * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ + * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there + * were enough free buffers and RX_STALLED is set it is cleared. + * + * + * Driver sequence: + * + * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls + * iwl3945_rx_queue_restock + * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx + * queue, updates firmware pointers, and updates + * the WRITE index. If insufficient rx_free buffers + * are available, schedules iwl3945_rx_replenish + * + * -- enable interrupts -- + * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the + * READ INDEX, detaching the SKB from the pool. + * Moves the packet buffer from queue to rx_used. + * Calls iwl3945_rx_queue_restock to refill any empty + * slots. + * ... + * + */ + +/** + * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr + */ +static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv, + dma_addr_t dma_addr) +{ + return cpu_to_le32((u32)dma_addr); +} + +/** + * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool + * + * If there are slots in the RX queue that need to be restocked, + * and we have free pre-allocated buffers, fill the ranks as much + * as we can, pulling from rx_free. + * + * This moves the 'write' index forward to catch up with 'processed', and + * also updates the memory address in the firmware to reference the new + * target buffer. + */ +static void iwl3945_rx_queue_restock(struct iwl_priv *priv) +{ + struct iwl_rx_queue *rxq = &priv->rxq; + struct list_head *element; + struct iwl_rx_mem_buffer *rxb; + unsigned long flags; + int write; + + spin_lock_irqsave(&rxq->lock, flags); + write = rxq->write & ~0x7; + while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) { + /* Get next free Rx buffer, remove from free list */ + element = rxq->rx_free.next; + rxb = list_entry(element, struct iwl_rx_mem_buffer, list); + list_del(element); + + /* Point to Rx buffer via next RBD in circular buffer */ + rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma); + rxq->queue[rxq->write] = rxb; + rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; + rxq->free_count--; + } + spin_unlock_irqrestore(&rxq->lock, flags); + /* If the pre-allocated buffer pool is dropping low, schedule to + * refill it */ + if (rxq->free_count <= RX_LOW_WATERMARK) + queue_work(priv->workqueue, &priv->rx_replenish); + + + /* If we've added more space for the firmware to place data, tell it. + * Increment device's write pointer in multiples of 8. */ + if ((rxq->write_actual != (rxq->write & ~0x7)) + || (abs(rxq->write - rxq->read) > 7)) { + spin_lock_irqsave(&rxq->lock, flags); + rxq->need_update = 1; + spin_unlock_irqrestore(&rxq->lock, flags); + iwl_rx_queue_update_write_ptr(priv, rxq); + } +} + +/** + * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free + * + * When moving to rx_free an SKB is allocated for the slot. + * + * Also restock the Rx queue via iwl3945_rx_queue_restock. + * This is called as a scheduled work item (except for during initialization) + */ +static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority) +{ + struct iwl_rx_queue *rxq = &priv->rxq; + struct list_head *element; + struct iwl_rx_mem_buffer *rxb; + struct page *page; + unsigned long flags; + gfp_t gfp_mask = priority; + + while (1) { + spin_lock_irqsave(&rxq->lock, flags); + + if (list_empty(&rxq->rx_used)) { + spin_unlock_irqrestore(&rxq->lock, flags); + return; + } + spin_unlock_irqrestore(&rxq->lock, flags); + + if (rxq->free_count > RX_LOW_WATERMARK) + gfp_mask |= __GFP_NOWARN; + + if (priv->hw_params.rx_page_order > 0) + gfp_mask |= __GFP_COMP; + + /* Alloc a new receive buffer */ + page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order); + if (!page) { + if (net_ratelimit()) + IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n"); + if ((rxq->free_count <= RX_LOW_WATERMARK) && + net_ratelimit()) + IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n", + priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL", + rxq->free_count); + /* We don't reschedule replenish work here -- we will + * call the restock method and if it still needs + * more buffers it will schedule replenish */ + break; + } + + spin_lock_irqsave(&rxq->lock, flags); + if (list_empty(&rxq->rx_used)) { + spin_unlock_irqrestore(&rxq->lock, flags); + __free_pages(page, priv->hw_params.rx_page_order); + return; + } + element = rxq->rx_used.next; + rxb = list_entry(element, struct iwl_rx_mem_buffer, list); + list_del(element); + spin_unlock_irqrestore(&rxq->lock, flags); + + rxb->page = page; + /* Get physical address of RB/SKB */ + rxb->page_dma = pci_map_page(priv->pci_dev, page, 0, + PAGE_SIZE << priv->hw_params.rx_page_order, + PCI_DMA_FROMDEVICE); + + spin_lock_irqsave(&rxq->lock, flags); + + list_add_tail(&rxb->list, &rxq->rx_free); + rxq->free_count++; + priv->alloc_rxb_page++; + + spin_unlock_irqrestore(&rxq->lock, flags); + } +} + +void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq) +{ + unsigned long flags; + int i; + spin_lock_irqsave(&rxq->lock, flags); + INIT_LIST_HEAD(&rxq->rx_free); + INIT_LIST_HEAD(&rxq->rx_used); + /* Fill the rx_used queue with _all_ of the Rx buffers */ + for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { + /* In the reset function, these buffers may have been allocated + * to an SKB, so we need to unmap and free potential storage */ + if (rxq->pool[i].page != NULL) { + pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma, + PAGE_SIZE << priv->hw_params.rx_page_order, + PCI_DMA_FROMDEVICE); + __iwl_free_pages(priv, rxq->pool[i].page); + rxq->pool[i].page = NULL; + } + list_add_tail(&rxq->pool[i].list, &rxq->rx_used); + } + + /* Set us so that we have processed and used all buffers, but have + * not restocked the Rx queue with fresh buffers */ + rxq->read = rxq->write = 0; + rxq->write_actual = 0; + rxq->free_count = 0; + spin_unlock_irqrestore(&rxq->lock, flags); +} + +void iwl3945_rx_replenish(void *data) +{ + struct iwl_priv *priv = data; + unsigned long flags; + + iwl3945_rx_allocate(priv, GFP_KERNEL); + + spin_lock_irqsave(&priv->lock, flags); + iwl3945_rx_queue_restock(priv); + spin_unlock_irqrestore(&priv->lock, flags); +} + +static void iwl3945_rx_replenish_now(struct iwl_priv *priv) +{ + iwl3945_rx_allocate(priv, GFP_ATOMIC); + + iwl3945_rx_queue_restock(priv); +} + + +/* Assumes that the skb field of the buffers in 'pool' is kept accurate. + * If an SKB has been detached, the POOL needs to have its SKB set to NULL + * This free routine walks the list of POOL entries and if SKB is set to + * non NULL it is unmapped and freed + */ +static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq) +{ + int i; + for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { + if (rxq->pool[i].page != NULL) { + pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma, + PAGE_SIZE << priv->hw_params.rx_page_order, + PCI_DMA_FROMDEVICE); + __iwl_free_pages(priv, rxq->pool[i].page); + rxq->pool[i].page = NULL; + } + } + + dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, + rxq->bd_dma); + dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status), + rxq->rb_stts, rxq->rb_stts_dma); + rxq->bd = NULL; + rxq->rb_stts = NULL; +} + + +/* Convert linear signal-to-noise ratio into dB */ +static u8 ratio2dB[100] = { +/* 0 1 2 3 4 5 6 7 8 9 */ + 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */ + 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */ + 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */ + 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */ + 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */ + 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */ + 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */ + 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */ + 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */ + 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */ +}; + +/* Calculates a relative dB value from a ratio of linear + * (i.e. not dB) signal levels. + * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ +int iwl3945_calc_db_from_ratio(int sig_ratio) +{ + /* 1000:1 or higher just report as 60 dB */ + if (sig_ratio >= 1000) + return 60; + + /* 100:1 or higher, divide by 10 and use table, + * add 20 dB to make up for divide by 10 */ + if (sig_ratio >= 100) + return 20 + (int)ratio2dB[sig_ratio/10]; + + /* We shouldn't see this */ + if (sig_ratio < 1) + return 0; + + /* Use table for ratios 1:1 - 99:1 */ + return (int)ratio2dB[sig_ratio]; +} + +/** + * iwl3945_rx_handle - Main entry function for receiving responses from uCode + * + * Uses the priv->rx_handlers callback function array to invoke + * the appropriate handlers, including command responses, + * frame-received notifications, and other notifications. + */ +static void iwl3945_rx_handle(struct iwl_priv *priv) +{ + struct iwl_rx_mem_buffer *rxb; + struct iwl_rx_packet *pkt; + struct iwl_rx_queue *rxq = &priv->rxq; + u32 r, i; + int reclaim; + unsigned long flags; + u8 fill_rx = 0; + u32 count = 8; + int total_empty = 0; + + /* uCode's read index (stored in shared DRAM) indicates the last Rx + * buffer that the driver may process (last buffer filled by ucode). */ + r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; + i = rxq->read; + + /* calculate total frames need to be restock after handling RX */ + total_empty = r - rxq->write_actual; + if (total_empty < 0) + total_empty += RX_QUEUE_SIZE; + + if (total_empty > (RX_QUEUE_SIZE / 2)) + fill_rx = 1; + /* Rx interrupt, but nothing sent from uCode */ + if (i == r) + IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i); + + while (i != r) { + int len; + + rxb = rxq->queue[i]; + + /* If an RXB doesn't have a Rx queue slot associated with it, + * then a bug has been introduced in the queue refilling + * routines -- catch it here */ + BUG_ON(rxb == NULL); + + rxq->queue[i] = NULL; + + pci_unmap_page(priv->pci_dev, rxb->page_dma, + PAGE_SIZE << priv->hw_params.rx_page_order, + PCI_DMA_FROMDEVICE); + pkt = rxb_addr(rxb); + + len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; + len += sizeof(u32); /* account for status word */ + trace_iwlwifi_dev_rx(priv, pkt, len); + + /* Reclaim a command buffer only if this packet is a response + * to a (driver-originated) command. + * If the packet (e.g. Rx frame) originated from uCode, + * there is no command buffer to reclaim. + * Ucode should set SEQ_RX_FRAME bit if ucode-originated, + * but apparently a few don't get set; catch them here. */ + reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && + (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && + (pkt->hdr.cmd != REPLY_TX); + + /* Based on type of command response or notification, + * handle those that need handling via function in + * rx_handlers table. See iwl3945_setup_rx_handlers() */ + if (priv->rx_handlers[pkt->hdr.cmd]) { + IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i, + get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); + priv->isr_stats.rx_handlers[pkt->hdr.cmd]++; + priv->rx_handlers[pkt->hdr.cmd] (priv, rxb); + } else { + /* No handling needed */ + IWL_DEBUG_RX(priv, + "r %d i %d No handler needed for %s, 0x%02x\n", + r, i, get_cmd_string(pkt->hdr.cmd), + pkt->hdr.cmd); + } + + /* + * XXX: After here, we should always check rxb->page + * against NULL before touching it or its virtual + * memory (pkt). Because some rx_handler might have + * already taken or freed the pages. + */ + + if (reclaim) { + /* Invoke any callbacks, transfer the buffer to caller, + * and fire off the (possibly) blocking iwl_send_cmd() + * as we reclaim the driver command queue */ + if (rxb->page) + iwl_tx_cmd_complete(priv, rxb); + else + IWL_WARN(priv, "Claim null rxb?\n"); + } + + /* Reuse the page if possible. For notification packets and + * SKBs that fail to Rx correctly, add them back into the + * rx_free list for reuse later. */ + spin_lock_irqsave(&rxq->lock, flags); + if (rxb->page != NULL) { + rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page, + 0, PAGE_SIZE << priv->hw_params.rx_page_order, + PCI_DMA_FROMDEVICE); + list_add_tail(&rxb->list, &rxq->rx_free); + rxq->free_count++; + } else + list_add_tail(&rxb->list, &rxq->rx_used); + + spin_unlock_irqrestore(&rxq->lock, flags); + + i = (i + 1) & RX_QUEUE_MASK; + /* If there are a lot of unused frames, + * restock the Rx queue so ucode won't assert. */ + if (fill_rx) { + count++; + if (count >= 8) { + rxq->read = i; + iwl3945_rx_replenish_now(priv); + count = 0; + } + } + } + + /* Backtrack one entry */ + rxq->read = i; + if (fill_rx) + iwl3945_rx_replenish_now(priv); + else + iwl3945_rx_queue_restock(priv); +} + +/* call this function to flush any scheduled tasklet */ +static inline void iwl_synchronize_irq(struct iwl_priv *priv) +{ + /* wait to make sure we flush pending tasklet*/ + synchronize_irq(priv->pci_dev->irq); + tasklet_kill(&priv->irq_tasklet); +} + +static const char *desc_lookup(int i) +{ + switch (i) { + case 1: + return "FAIL"; + case 2: + return "BAD_PARAM"; + case 3: + return "BAD_CHECKSUM"; + case 4: + return "NMI_INTERRUPT"; + case 5: + return "SYSASSERT"; + case 6: + return "FATAL_ERROR"; + } + + return "UNKNOWN"; +} + +#define ERROR_START_OFFSET (1 * sizeof(u32)) +#define ERROR_ELEM_SIZE (7 * sizeof(u32)) + +void iwl3945_dump_nic_error_log(struct iwl_priv *priv) +{ + u32 i; + u32 desc, time, count, base, data1; + u32 blink1, blink2, ilink1, ilink2; + + base = le32_to_cpu(priv->card_alive.error_event_table_ptr); + + if (!iwl3945_hw_valid_rtc_data_addr(base)) { + IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base); + return; + } + + + count = iwl_read_targ_mem(priv, base); + + if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { + IWL_ERR(priv, "Start IWL Error Log Dump:\n"); + IWL_ERR(priv, "Status: 0x%08lX, count: %d\n", + priv->status, count); + } + + IWL_ERR(priv, "Desc Time asrtPC blink2 " + "ilink1 nmiPC Line\n"); + for (i = ERROR_START_OFFSET; + i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET; + i += ERROR_ELEM_SIZE) { + desc = iwl_read_targ_mem(priv, base + i); + time = + iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32)); + blink1 = + iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32)); + blink2 = + iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32)); + ilink1 = + iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32)); + ilink2 = + iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32)); + data1 = + iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32)); + + IWL_ERR(priv, + "%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n", + desc_lookup(desc), desc, time, blink1, blink2, + ilink1, ilink2, data1); + trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0, + 0, blink1, blink2, ilink1, ilink2); + } +} + +#define EVENT_START_OFFSET (6 * sizeof(u32)) + +/** + * iwl3945_print_event_log - Dump error event log to syslog + * + */ +static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx, + u32 num_events, u32 mode, + int pos, char **buf, size_t bufsz) +{ + u32 i; + u32 base; /* SRAM byte address of event log header */ + u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ + u32 ptr; /* SRAM byte address of log data */ + u32 ev, time, data; /* event log data */ + unsigned long reg_flags; + + if (num_events == 0) + return pos; + + base = le32_to_cpu(priv->card_alive.log_event_table_ptr); + + if (mode == 0) + event_size = 2 * sizeof(u32); + else + event_size = 3 * sizeof(u32); + + ptr = base + EVENT_START_OFFSET + (start_idx * event_size); + + /* Make sure device is powered up for SRAM reads */ + spin_lock_irqsave(&priv->reg_lock, reg_flags); + iwl_grab_nic_access(priv); + + /* Set starting address; reads will auto-increment */ + _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr); + rmb(); + + /* "time" is actually "data" for mode 0 (no timestamp). + * place event id # at far right for easier visual parsing. */ + for (i = 0; i < num_events; i++) { + ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + if (mode == 0) { + /* data, ev */ + if (bufsz) { + pos += scnprintf(*buf + pos, bufsz - pos, + "0x%08x:%04u\n", + time, ev); + } else { + IWL_ERR(priv, "0x%08x\t%04u\n", time, ev); + trace_iwlwifi_dev_ucode_event(priv, 0, + time, ev); + } + } else { + data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + if (bufsz) { + pos += scnprintf(*buf + pos, bufsz - pos, + "%010u:0x%08x:%04u\n", + time, data, ev); + } else { + IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", + time, data, ev); + trace_iwlwifi_dev_ucode_event(priv, time, + data, ev); + } + } + } + + /* Allow device to power down */ + iwl_release_nic_access(priv); + spin_unlock_irqrestore(&priv->reg_lock, reg_flags); + return pos; +} + +/** + * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog + */ +static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity, + u32 num_wraps, u32 next_entry, + u32 size, u32 mode, + int pos, char **buf, size_t bufsz) +{ + /* + * display the newest DEFAULT_LOG_ENTRIES entries + * i.e the entries just before the next ont that uCode would fill. + */ + if (num_wraps) { + if (next_entry < size) { + pos = iwl3945_print_event_log(priv, + capacity - (size - next_entry), + size - next_entry, mode, + pos, buf, bufsz); + pos = iwl3945_print_event_log(priv, 0, + next_entry, mode, + pos, buf, bufsz); + } else + pos = iwl3945_print_event_log(priv, next_entry - size, + size, mode, + pos, buf, bufsz); + } else { + if (next_entry < size) + pos = iwl3945_print_event_log(priv, 0, + next_entry, mode, + pos, buf, bufsz); + else + pos = iwl3945_print_event_log(priv, next_entry - size, + size, mode, + pos, buf, bufsz); + } + return pos; +} + +#define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20) + +int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log, + char **buf, bool display) +{ + u32 base; /* SRAM byte address of event log header */ + u32 capacity; /* event log capacity in # entries */ + u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ + u32 num_wraps; /* # times uCode wrapped to top of log */ + u32 next_entry; /* index of next entry to be written by uCode */ + u32 size; /* # entries that we'll print */ + int pos = 0; + size_t bufsz = 0; + + base = le32_to_cpu(priv->card_alive.log_event_table_ptr); + if (!iwl3945_hw_valid_rtc_data_addr(base)) { + IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base); + return -EINVAL; + } + + /* event log header */ + capacity = iwl_read_targ_mem(priv, base); + mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32))); + num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32))); + next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32))); + + if (capacity > priv->cfg->base_params->max_event_log_size) { + IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n", + capacity, priv->cfg->base_params->max_event_log_size); + capacity = priv->cfg->base_params->max_event_log_size; + } + + if (next_entry > priv->cfg->base_params->max_event_log_size) { + IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", + next_entry, priv->cfg->base_params->max_event_log_size); + next_entry = priv->cfg->base_params->max_event_log_size; + } + + size = num_wraps ? capacity : next_entry; + + /* bail out if nothing in log */ + if (size == 0) { + IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n"); + return pos; + } + +#ifdef CONFIG_IWLWIFI_DEBUG + if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log) + size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES) + ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size; +#else + size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES) + ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size; +#endif + + IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n", + size); + +#ifdef CONFIG_IWLWIFI_DEBUG + if (display) { + if (full_log) + bufsz = capacity * 48; + else + bufsz = size * 48; + *buf = kmalloc(bufsz, GFP_KERNEL); + if (!*buf) + return -ENOMEM; + } + if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) { + /* if uCode has wrapped back to top of log, + * start at the oldest entry, + * i.e the next one that uCode would fill. + */ + if (num_wraps) + pos = iwl3945_print_event_log(priv, next_entry, + capacity - next_entry, mode, + pos, buf, bufsz); + + /* (then/else) start at top of log */ + pos = iwl3945_print_event_log(priv, 0, next_entry, mode, + pos, buf, bufsz); + } else + pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps, + next_entry, size, mode, + pos, buf, bufsz); +#else + pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps, + next_entry, size, mode, + pos, buf, bufsz); +#endif + return pos; +} + +static void iwl3945_irq_tasklet(struct iwl_priv *priv) +{ + u32 inta, handled = 0; + u32 inta_fh; + unsigned long flags; +#ifdef CONFIG_IWLWIFI_DEBUG + u32 inta_mask; +#endif + + spin_lock_irqsave(&priv->lock, flags); + + /* Ack/clear/reset pending uCode interrupts. + * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, + * and will clear only when CSR_FH_INT_STATUS gets cleared. */ + inta = iwl_read32(priv, CSR_INT); + iwl_write32(priv, CSR_INT, inta); + + /* Ack/clear/reset pending flow-handler (DMA) interrupts. + * Any new interrupts that happen after this, either while we're + * in this tasklet, or later, will show up in next ISR/tasklet. */ + inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); + iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh); + +#ifdef CONFIG_IWLWIFI_DEBUG + if (iwl_get_debug_level(priv) & IWL_DL_ISR) { + /* just for debug */ + inta_mask = iwl_read32(priv, CSR_INT_MASK); + IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", + inta, inta_mask, inta_fh); + } +#endif + + spin_unlock_irqrestore(&priv->lock, flags); + + /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not + * atomic, make sure that inta covers all the interrupts that + * we've discovered, even if FH interrupt came in just after + * reading CSR_INT. */ + if (inta_fh & CSR39_FH_INT_RX_MASK) + inta |= CSR_INT_BIT_FH_RX; + if (inta_fh & CSR39_FH_INT_TX_MASK) + inta |= CSR_INT_BIT_FH_TX; + + /* Now service all interrupt bits discovered above. */ + if (inta & CSR_INT_BIT_HW_ERR) { + IWL_ERR(priv, "Hardware error detected. Restarting.\n"); + + /* Tell the device to stop sending interrupts */ + iwl_disable_interrupts(priv); + + priv->isr_stats.hw++; + iwl_irq_handle_error(priv); + + handled |= CSR_INT_BIT_HW_ERR; + + return; + } + +#ifdef CONFIG_IWLWIFI_DEBUG + if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { + /* NIC fires this, but we don't use it, redundant with WAKEUP */ + if (inta & CSR_INT_BIT_SCD) { + IWL_DEBUG_ISR(priv, "Scheduler finished to transmit " + "the frame/frames.\n"); + priv->isr_stats.sch++; + } + + /* Alive notification via Rx interrupt will do the real work */ + if (inta & CSR_INT_BIT_ALIVE) { + IWL_DEBUG_ISR(priv, "Alive interrupt\n"); + priv->isr_stats.alive++; + } + } +#endif + /* Safely ignore these bits for debug checks below */ + inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); + + /* Error detected by uCode */ + if (inta & CSR_INT_BIT_SW_ERR) { + IWL_ERR(priv, "Microcode SW error detected. " + "Restarting 0x%X.\n", inta); + priv->isr_stats.sw++; + iwl_irq_handle_error(priv); + handled |= CSR_INT_BIT_SW_ERR; + } + + /* uCode wakes up after power-down sleep */ + if (inta & CSR_INT_BIT_WAKEUP) { + IWL_DEBUG_ISR(priv, "Wakeup interrupt\n"); + iwl_rx_queue_update_write_ptr(priv, &priv->rxq); + iwl_txq_update_write_ptr(priv, &priv->txq[0]); + iwl_txq_update_write_ptr(priv, &priv->txq[1]); + iwl_txq_update_write_ptr(priv, &priv->txq[2]); + iwl_txq_update_write_ptr(priv, &priv->txq[3]); + iwl_txq_update_write_ptr(priv, &priv->txq[4]); + iwl_txq_update_write_ptr(priv, &priv->txq[5]); + + priv->isr_stats.wakeup++; + handled |= CSR_INT_BIT_WAKEUP; + } + + /* All uCode command responses, including Tx command responses, + * Rx "responses" (frame-received notification), and other + * notifications from uCode come through here*/ + if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { + iwl3945_rx_handle(priv); + priv->isr_stats.rx++; + handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); + } + + if (inta & CSR_INT_BIT_FH_TX) { + IWL_DEBUG_ISR(priv, "Tx interrupt\n"); + priv->isr_stats.tx++; + + iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6)); + iwl_write_direct32(priv, FH39_TCSR_CREDIT + (FH39_SRVC_CHNL), 0x0); + handled |= CSR_INT_BIT_FH_TX; + } + + if (inta & ~handled) { + IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled); + priv->isr_stats.unhandled++; + } + + if (inta & ~priv->inta_mask) { + IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n", + inta & ~priv->inta_mask); + IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh); + } + + /* Re-enable all interrupts */ + /* only Re-enable if disabled by irq */ + if (test_bit(STATUS_INT_ENABLED, &priv->status)) + iwl_enable_interrupts(priv); + +#ifdef CONFIG_IWLWIFI_DEBUG + if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) { + inta = iwl_read32(priv, CSR_INT); + inta_mask = iwl_read32(priv, CSR_INT_MASK); + inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); + IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " + "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); + } +#endif +} + +static int iwl3945_get_single_channel_for_scan(struct iwl_priv *priv, + struct ieee80211_vif *vif, + enum ieee80211_band band, + struct iwl3945_scan_channel *scan_ch) +{ + const struct ieee80211_supported_band *sband; + u16 passive_dwell = 0; + u16 active_dwell = 0; + int added = 0; + u8 channel = 0; + + sband = iwl_get_hw_mode(priv, band); + if (!sband) { + IWL_ERR(priv, "invalid band\n"); + return added; + } + + active_dwell = iwl_get_active_dwell_time(priv, band, 0); + passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); + + if (passive_dwell <= active_dwell) + passive_dwell = active_dwell + 1; + + + channel = iwl_get_single_channel_number(priv, band); + + if (channel) { + scan_ch->channel = channel; + scan_ch->type = 0; /* passive */ + scan_ch->active_dwell = cpu_to_le16(active_dwell); + scan_ch->passive_dwell = cpu_to_le16(passive_dwell); + /* Set txpower levels to defaults */ + scan_ch->tpc.dsp_atten = 110; + if (band == IEEE80211_BAND_5GHZ) + scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; + else + scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); + added++; + } else + IWL_ERR(priv, "no valid channel found\n"); + return added; +} + +static int iwl3945_get_channels_for_scan(struct iwl_priv *priv, + enum ieee80211_band band, + u8 is_active, u8 n_probes, + struct iwl3945_scan_channel *scan_ch, + struct ieee80211_vif *vif) +{ + struct ieee80211_channel *chan; + const struct ieee80211_supported_band *sband; + const struct iwl_channel_info *ch_info; + u16 passive_dwell = 0; + u16 active_dwell = 0; + int added, i; + + sband = iwl_get_hw_mode(priv, band); + if (!sband) + return 0; + + active_dwell = iwl_get_active_dwell_time(priv, band, n_probes); + passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); + + if (passive_dwell <= active_dwell) + passive_dwell = active_dwell + 1; + + for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) { + chan = priv->scan_request->channels[i]; + + if (chan->band != band) + continue; + + scan_ch->channel = chan->hw_value; + + ch_info = iwl_get_channel_info(priv, band, scan_ch->channel); + if (!is_channel_valid(ch_info)) { + IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n", + scan_ch->channel); + continue; + } + + scan_ch->active_dwell = cpu_to_le16(active_dwell); + scan_ch->passive_dwell = cpu_to_le16(passive_dwell); + /* If passive , set up for auto-switch + * and use long active_dwell time. + */ + if (!is_active || is_channel_passive(ch_info) || + (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) { + scan_ch->type = 0; /* passive */ + if (IWL_UCODE_API(priv->ucode_ver) == 1) + scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1); + } else { + scan_ch->type = 1; /* active */ + } + + /* Set direct probe bits. These may be used both for active + * scan channels (probes gets sent right away), + * or for passive channels (probes get se sent only after + * hearing clear Rx packet).*/ + if (IWL_UCODE_API(priv->ucode_ver) >= 2) { + if (n_probes) + scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes); + } else { + /* uCode v1 does not allow setting direct probe bits on + * passive channel. */ + if ((scan_ch->type & 1) && n_probes) + scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes); + } + + /* Set txpower levels to defaults */ + scan_ch->tpc.dsp_atten = 110; + /* scan_pwr_info->tpc.dsp_atten; */ + + /*scan_pwr_info->tpc.tx_gain; */ + if (band == IEEE80211_BAND_5GHZ) + scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; + else { + scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); + /* NOTE: if we were doing 6Mb OFDM for scans we'd use + * power level: + * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3; + */ + } + + IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n", + scan_ch->channel, + (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", + (scan_ch->type & 1) ? + active_dwell : passive_dwell); + + scan_ch++; + added++; + } + + IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added); + return added; +} + +static void iwl3945_init_hw_rates(struct iwl_priv *priv, + struct ieee80211_rate *rates) +{ + int i; + + for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) { + rates[i].bitrate = iwl3945_rates[i].ieee * 5; + rates[i].hw_value = i; /* Rate scaling will work on indexes */ + rates[i].hw_value_short = i; + rates[i].flags = 0; + if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) { + /* + * If CCK != 1M then set short preamble rate flag. + */ + rates[i].flags |= (iwl3945_rates[i].plcp == 10) ? + 0 : IEEE80211_RATE_SHORT_PREAMBLE; + } + } +} + +/****************************************************************************** + * + * uCode download functions + * + ******************************************************************************/ + +static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv) +{ + iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code); + iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data); + iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup); + iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init); + iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data); + iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot); +} + +/** + * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host, + * looking at all data. + */ +static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len) +{ + u32 val; + u32 save_len = len; + int rc = 0; + u32 errcnt; + + IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len); + + iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, + IWL39_RTC_INST_LOWER_BOUND); + + errcnt = 0; + for (; len > 0; len -= sizeof(u32), image++) { + /* read data comes through single port, auto-incr addr */ + /* NOTE: Use the debugless read so we don't flood kernel log + * if IWL_DL_IO is set */ + val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + if (val != le32_to_cpu(*image)) { + IWL_ERR(priv, "uCode INST section is invalid at " + "offset 0x%x, is 0x%x, s/b 0x%x\n", + save_len - len, val, le32_to_cpu(*image)); + rc = -EIO; + errcnt++; + if (errcnt >= 20) + break; + } + } + + + if (!errcnt) + IWL_DEBUG_INFO(priv, + "ucode image in INSTRUCTION memory is good\n"); + + return rc; +} + + +/** + * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host, + * using sample data 100 bytes apart. If these sample points are good, + * it's a pretty good bet that everything between them is good, too. + */ +static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len) +{ + u32 val; + int rc = 0; + u32 errcnt = 0; + u32 i; + + IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len); + + for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) { + /* read data comes through single port, auto-incr addr */ + /* NOTE: Use the debugless read so we don't flood kernel log + * if IWL_DL_IO is set */ + iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, + i + IWL39_RTC_INST_LOWER_BOUND); + val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT); + if (val != le32_to_cpu(*image)) { +#if 0 /* Enable this if you want to see details */ + IWL_ERR(priv, "uCode INST section is invalid at " + "offset 0x%x, is 0x%x, s/b 0x%x\n", + i, val, *image); +#endif + rc = -EIO; + errcnt++; + if (errcnt >= 3) + break; + } + } + + return rc; +} + + +/** + * iwl3945_verify_ucode - determine which instruction image is in SRAM, + * and verify its contents + */ +static int iwl3945_verify_ucode(struct iwl_priv *priv) +{ + __le32 *image; + u32 len; + int rc = 0; + + /* Try bootstrap */ + image = (__le32 *)priv->ucode_boot.v_addr; + len = priv->ucode_boot.len; + rc = iwl3945_verify_inst_sparse(priv, image, len); + if (rc == 0) { + IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n"); + return 0; + } + + /* Try initialize */ + image = (__le32 *)priv->ucode_init.v_addr; + len = priv->ucode_init.len; + rc = iwl3945_verify_inst_sparse(priv, image, len); + if (rc == 0) { + IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n"); + return 0; + } + + /* Try runtime/protocol */ + image = (__le32 *)priv->ucode_code.v_addr; + len = priv->ucode_code.len; + rc = iwl3945_verify_inst_sparse(priv, image, len); + if (rc == 0) { + IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n"); + return 0; + } + + IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); + + /* Since nothing seems to match, show first several data entries in + * instruction SRAM, so maybe visual inspection will give a clue. + * Selection of bootstrap image (vs. other images) is arbitrary. */ + image = (__le32 *)priv->ucode_boot.v_addr; + len = priv->ucode_boot.len; + rc = iwl3945_verify_inst_full(priv, image, len); + + return rc; +} + +static void iwl3945_nic_start(struct iwl_priv *priv) +{ + /* Remove all resets to allow NIC to operate */ + iwl_write32(priv, CSR_RESET, 0); +} + +#define IWL3945_UCODE_GET(item) \ +static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\ +{ \ + return le32_to_cpu(ucode->u.v1.item); \ +} + +static u32 iwl3945_ucode_get_header_size(u32 api_ver) +{ + return 24; +} + +static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode) +{ + return (u8 *) ucode->u.v1.data; +} + +IWL3945_UCODE_GET(inst_size); +IWL3945_UCODE_GET(data_size); +IWL3945_UCODE_GET(init_size); +IWL3945_UCODE_GET(init_data_size); +IWL3945_UCODE_GET(boot_size); + +/** + * iwl3945_read_ucode - Read uCode images from disk file. + * + * Copy into buffers for card to fetch via bus-mastering + */ +static int iwl3945_read_ucode(struct iwl_priv *priv) +{ + const struct iwl_ucode_header *ucode; + int ret = -EINVAL, index; + const struct firmware *ucode_raw; + /* firmware file name contains uCode/driver compatibility version */ + const char *name_pre = priv->cfg->fw_name_pre; + const unsigned int api_max = priv->cfg->ucode_api_max; + const unsigned int api_min = priv->cfg->ucode_api_min; + char buf[25]; + u8 *src; + size_t len; + u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size; + + /* Ask kernel firmware_class module to get the boot firmware off disk. + * request_firmware() is synchronous, file is in memory on return. */ + for (index = api_max; index >= api_min; index--) { + sprintf(buf, "%s%u%s", name_pre, index, ".ucode"); + ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev); + if (ret < 0) { + IWL_ERR(priv, "%s firmware file req failed: %d\n", + buf, ret); + if (ret == -ENOENT) + continue; + else + goto error; + } else { + if (index < api_max) + IWL_ERR(priv, "Loaded firmware %s, " + "which is deprecated. " + " Please use API v%u instead.\n", + buf, api_max); + IWL_DEBUG_INFO(priv, "Got firmware '%s' file " + "(%zd bytes) from disk\n", + buf, ucode_raw->size); + break; + } + } + + if (ret < 0) + goto error; + + /* Make sure that we got at least our header! */ + if (ucode_raw->size < iwl3945_ucode_get_header_size(1)) { + IWL_ERR(priv, "File size way too small!\n"); + ret = -EINVAL; + goto err_release; + } + + /* Data from ucode file: header followed by uCode images */ + ucode = (struct iwl_ucode_header *)ucode_raw->data; + + priv->ucode_ver = le32_to_cpu(ucode->ver); + api_ver = IWL_UCODE_API(priv->ucode_ver); + inst_size = iwl3945_ucode_get_inst_size(ucode); + data_size = iwl3945_ucode_get_data_size(ucode); + init_size = iwl3945_ucode_get_init_size(ucode); + init_data_size = iwl3945_ucode_get_init_data_size(ucode); + boot_size = iwl3945_ucode_get_boot_size(ucode); + src = iwl3945_ucode_get_data(ucode); + + /* api_ver should match the api version forming part of the + * firmware filename ... but we don't check for that and only rely + * on the API version read from firmware header from here on forward */ + + if (api_ver < api_min || api_ver > api_max) { + IWL_ERR(priv, "Driver unable to support your firmware API. " + "Driver supports v%u, firmware is v%u.\n", + api_max, api_ver); + priv->ucode_ver = 0; + ret = -EINVAL; + goto err_release; + } + if (api_ver != api_max) + IWL_ERR(priv, "Firmware has old API version. Expected %u, " + "got %u. New firmware can be obtained " + "from http://www.intellinuxwireless.org.\n", + api_max, api_ver); + + IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n", + IWL_UCODE_MAJOR(priv->ucode_ver), + IWL_UCODE_MINOR(priv->ucode_ver), + IWL_UCODE_API(priv->ucode_ver), + IWL_UCODE_SERIAL(priv->ucode_ver)); + + snprintf(priv->hw->wiphy->fw_version, + sizeof(priv->hw->wiphy->fw_version), + "%u.%u.%u.%u", + IWL_UCODE_MAJOR(priv->ucode_ver), + IWL_UCODE_MINOR(priv->ucode_ver), + IWL_UCODE_API(priv->ucode_ver), + IWL_UCODE_SERIAL(priv->ucode_ver)); + + IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n", + priv->ucode_ver); + IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n", + inst_size); + IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n", + data_size); + IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n", + init_size); + IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n", + init_data_size); + IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n", + boot_size); + + + /* Verify size of file vs. image size info in file's header */ + if (ucode_raw->size != iwl3945_ucode_get_header_size(api_ver) + + inst_size + data_size + init_size + + init_data_size + boot_size) { + + IWL_DEBUG_INFO(priv, + "uCode file size %zd does not match expected size\n", + ucode_raw->size); + ret = -EINVAL; + goto err_release; + } + + /* Verify that uCode images will fit in card's SRAM */ + if (inst_size > IWL39_MAX_INST_SIZE) { + IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n", + inst_size); + ret = -EINVAL; + goto err_release; + } + + if (data_size > IWL39_MAX_DATA_SIZE) { + IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n", + data_size); + ret = -EINVAL; + goto err_release; + } + if (init_size > IWL39_MAX_INST_SIZE) { + IWL_DEBUG_INFO(priv, + "uCode init instr len %d too large to fit in\n", + init_size); + ret = -EINVAL; + goto err_release; + } + if (init_data_size > IWL39_MAX_DATA_SIZE) { + IWL_DEBUG_INFO(priv, + "uCode init data len %d too large to fit in\n", + init_data_size); + ret = -EINVAL; + goto err_release; + } + if (boot_size > IWL39_MAX_BSM_SIZE) { + IWL_DEBUG_INFO(priv, + "uCode boot instr len %d too large to fit in\n", + boot_size); + ret = -EINVAL; + goto err_release; + } + + /* Allocate ucode buffers for card's bus-master loading ... */ + + /* Runtime instructions and 2 copies of data: + * 1) unmodified from disk + * 2) backup cache for save/restore during power-downs */ + priv->ucode_code.len = inst_size; + iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code); + + priv->ucode_data.len = data_size; + iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data); + + priv->ucode_data_backup.len = data_size; + iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup); + + if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr || + !priv->ucode_data_backup.v_addr) + goto err_pci_alloc; + + /* Initialization instructions and data */ + if (init_size && init_data_size) { + priv->ucode_init.len = init_size; + iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init); + + priv->ucode_init_data.len = init_data_size; + iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data); + + if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr) + goto err_pci_alloc; + } + + /* Bootstrap (instructions only, no data) */ + if (boot_size) { + priv->ucode_boot.len = boot_size; + iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot); + + if (!priv->ucode_boot.v_addr) + goto err_pci_alloc; + } + + /* Copy images into buffers for card's bus-master reads ... */ + + /* Runtime instructions (first block of data in file) */ + len = inst_size; + IWL_DEBUG_INFO(priv, + "Copying (but not loading) uCode instr len %zd\n", len); + memcpy(priv->ucode_code.v_addr, src, len); + src += len; + + IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", + priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr); + + /* Runtime data (2nd block) + * NOTE: Copy into backup buffer will be done in iwl3945_up() */ + len = data_size; + IWL_DEBUG_INFO(priv, + "Copying (but not loading) uCode data len %zd\n", len); + memcpy(priv->ucode_data.v_addr, src, len); + memcpy(priv->ucode_data_backup.v_addr, src, len); + src += len; + + /* Initialization instructions (3rd block) */ + if (init_size) { + len = init_size; + IWL_DEBUG_INFO(priv, + "Copying (but not loading) init instr len %zd\n", len); + memcpy(priv->ucode_init.v_addr, src, len); + src += len; + } + + /* Initialization data (4th block) */ + if (init_data_size) { + len = init_data_size; + IWL_DEBUG_INFO(priv, + "Copying (but not loading) init data len %zd\n", len); + memcpy(priv->ucode_init_data.v_addr, src, len); + src += len; + } + + /* Bootstrap instructions (5th block) */ + len = boot_size; + IWL_DEBUG_INFO(priv, + "Copying (but not loading) boot instr len %zd\n", len); + memcpy(priv->ucode_boot.v_addr, src, len); + + /* We have our copies now, allow OS release its copies */ + release_firmware(ucode_raw); + return 0; + + err_pci_alloc: + IWL_ERR(priv, "failed to allocate pci memory\n"); + ret = -ENOMEM; + iwl3945_dealloc_ucode_pci(priv); + + err_release: + release_firmware(ucode_raw); + + error: + return ret; +} + + +/** + * iwl3945_set_ucode_ptrs - Set uCode address location + * + * Tell initialization uCode where to find runtime uCode. + * + * BSM registers initially contain pointers to initialization uCode. + * We need to replace them to load runtime uCode inst and data, + * and to save runtime data when powering down. + */ +static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv) +{ + dma_addr_t pinst; + dma_addr_t pdata; + + /* bits 31:0 for 3945 */ + pinst = priv->ucode_code.p_addr; + pdata = priv->ucode_data_backup.p_addr; + + /* Tell bootstrap uCode where to find image to load */ + iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); + iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); + iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, + priv->ucode_data.len); + + /* Inst byte count must be last to set up, bit 31 signals uCode + * that all new ptr/size info is in place */ + iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, + priv->ucode_code.len | BSM_DRAM_INST_LOAD); + + IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n"); + + return 0; +} + +/** + * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received + * + * Called after REPLY_ALIVE notification received from "initialize" uCode. + * + * Tell "initialize" uCode to go ahead and load the runtime uCode. + */ +static void iwl3945_init_alive_start(struct iwl_priv *priv) +{ + /* Check alive response for "valid" sign from uCode */ + if (priv->card_alive_init.is_valid != UCODE_VALID_OK) { + /* We had an error bringing up the hardware, so take it + * all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n"); + goto restart; + } + + /* Bootstrap uCode has loaded initialize uCode ... verify inst image. + * This is a paranoid check, because we would not have gotten the + * "initialize" alive if code weren't properly loaded. */ + if (iwl3945_verify_ucode(priv)) { + /* Runtime instruction load was bad; + * take it all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n"); + goto restart; + } + + /* Send pointers to protocol/runtime uCode image ... init code will + * load and launch runtime uCode, which will send us another "Alive" + * notification. */ + IWL_DEBUG_INFO(priv, "Initialization Alive received.\n"); + if (iwl3945_set_ucode_ptrs(priv)) { + /* Runtime instruction load won't happen; + * take it all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n"); + goto restart; + } + return; + + restart: + queue_work(priv->workqueue, &priv->restart); +} + +/** + * iwl3945_alive_start - called after REPLY_ALIVE notification received + * from protocol/runtime uCode (initialization uCode's + * Alive gets handled by iwl3945_init_alive_start()). + */ +static void iwl3945_alive_start(struct iwl_priv *priv) +{ + int thermal_spin = 0; + u32 rfkill; + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); + + if (priv->card_alive.is_valid != UCODE_VALID_OK) { + /* We had an error bringing up the hardware, so take it + * all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Alive failed.\n"); + goto restart; + } + + /* Initialize uCode has loaded Runtime uCode ... verify inst image. + * This is a paranoid check, because we would not have gotten the + * "runtime" alive if code weren't properly loaded. */ + if (iwl3945_verify_ucode(priv)) { + /* Runtime instruction load was bad; + * take it all the way back down so we can try again */ + IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n"); + goto restart; + } + + rfkill = iwl_read_prph(priv, APMG_RFKILL_REG); + IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill); + + if (rfkill & 0x1) { + clear_bit(STATUS_RF_KILL_HW, &priv->status); + /* if RFKILL is not on, then wait for thermal + * sensor in adapter to kick in */ + while (iwl3945_hw_get_temperature(priv) == 0) { + thermal_spin++; + udelay(10); + } + + if (thermal_spin) + IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n", + thermal_spin * 10); + } else + set_bit(STATUS_RF_KILL_HW, &priv->status); + + /* After the ALIVE response, we can send commands to 3945 uCode */ + set_bit(STATUS_ALIVE, &priv->status); + + /* Enable watchdog to monitor the driver tx queues */ + iwl_setup_watchdog(priv); + + if (iwl_is_rfkill(priv)) + return; + + ieee80211_wake_queues(priv->hw); + + priv->active_rate = IWL_RATES_MASK_3945; + + iwl_power_update_mode(priv, true); + + if (iwl_is_associated(priv, IWL_RXON_CTX_BSS)) { + struct iwl3945_rxon_cmd *active_rxon = + (struct iwl3945_rxon_cmd *)(&ctx->active); + + ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; + active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; + } else { + /* Initialize our rx_config data */ + iwl_connection_init_rx_config(priv, ctx); + } + + /* Configure Bluetooth device coexistence support */ + priv->cfg->ops->hcmd->send_bt_config(priv); + + set_bit(STATUS_READY, &priv->status); + + /* Configure the adapter for unassociated operation */ + iwl3945_commit_rxon(priv, ctx); + + iwl3945_reg_txpower_periodic(priv); + + IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); + wake_up_interruptible(&priv->wait_command_queue); + + return; + + restart: + queue_work(priv->workqueue, &priv->restart); +} + +static void iwl3945_cancel_deferred_work(struct iwl_priv *priv); + +static void __iwl3945_down(struct iwl_priv *priv) +{ + unsigned long flags; + int exit_pending; + + IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); + + iwl_scan_cancel_timeout(priv, 200); + + exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); + + /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set + * to prevent rearm timer */ + del_timer_sync(&priv->watchdog); + + /* Station information will now be cleared in device */ + iwl_clear_ucode_stations(priv, NULL); + iwl_dealloc_bcast_stations(priv); + iwl_clear_driver_stations(priv); + + /* Unblock any waiting calls */ + wake_up_interruptible_all(&priv->wait_command_queue); + + /* Wipe out the EXIT_PENDING status bit if we are not actually + * exiting the module */ + if (!exit_pending) + clear_bit(STATUS_EXIT_PENDING, &priv->status); + + /* stop and reset the on-board processor */ + iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); + + /* tell the device to stop sending interrupts */ + spin_lock_irqsave(&priv->lock, flags); + iwl_disable_interrupts(priv); + spin_unlock_irqrestore(&priv->lock, flags); + iwl_synchronize_irq(priv); + + if (priv->mac80211_registered) + ieee80211_stop_queues(priv->hw); + + /* If we have not previously called iwl3945_init() then + * clear all bits but the RF Kill bits and return */ + if (!iwl_is_init(priv)) { + priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) << + STATUS_RF_KILL_HW | + test_bit(STATUS_GEO_CONFIGURED, &priv->status) << + STATUS_GEO_CONFIGURED | + test_bit(STATUS_EXIT_PENDING, &priv->status) << + STATUS_EXIT_PENDING; + goto exit; + } + + /* ...otherwise clear out all the status bits but the RF Kill + * bit and continue taking the NIC down. */ + priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << + STATUS_RF_KILL_HW | + test_bit(STATUS_GEO_CONFIGURED, &priv->status) << + STATUS_GEO_CONFIGURED | + test_bit(STATUS_FW_ERROR, &priv->status) << + STATUS_FW_ERROR | + test_bit(STATUS_EXIT_PENDING, &priv->status) << + STATUS_EXIT_PENDING; + + iwl3945_hw_txq_ctx_stop(priv); + iwl3945_hw_rxq_stop(priv); + + /* Power-down device's busmaster DMA clocks */ + iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); + udelay(5); + + /* Stop the device, and put it in low power state */ + iwl_apm_stop(priv); + + exit: + memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp)); + + if (priv->beacon_skb) + dev_kfree_skb(priv->beacon_skb); + priv->beacon_skb = NULL; + + /* clear out any free frames */ + iwl3945_clear_free_frames(priv); +} + +static void iwl3945_down(struct iwl_priv *priv) +{ + mutex_lock(&priv->mutex); + __iwl3945_down(priv); + mutex_unlock(&priv->mutex); + + iwl3945_cancel_deferred_work(priv); +} + +#define MAX_HW_RESTARTS 5 + +static int iwl3945_alloc_bcast_station(struct iwl_priv *priv) +{ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + unsigned long flags; + u8 sta_id; + + spin_lock_irqsave(&priv->sta_lock, flags); + sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); + if (sta_id == IWL_INVALID_STATION) { + IWL_ERR(priv, "Unable to prepare broadcast station\n"); + spin_unlock_irqrestore(&priv->sta_lock, flags); + + return -EINVAL; + } + + priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; + priv->stations[sta_id].used |= IWL_STA_BCAST; + spin_unlock_irqrestore(&priv->sta_lock, flags); + + return 0; +} + +static int __iwl3945_up(struct iwl_priv *priv) +{ + int rc, i; + + rc = iwl3945_alloc_bcast_station(priv); + if (rc) + return rc; + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { + IWL_WARN(priv, "Exit pending; will not bring the NIC up\n"); + return -EIO; + } + + if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) { + IWL_ERR(priv, "ucode not available for device bring up\n"); + return -EIO; + } + + /* If platform's RF_KILL switch is NOT set to KILL */ + if (iwl_read32(priv, CSR_GP_CNTRL) & + CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) + clear_bit(STATUS_RF_KILL_HW, &priv->status); + else { + set_bit(STATUS_RF_KILL_HW, &priv->status); + IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n"); + return -ENODEV; + } + + iwl_write32(priv, CSR_INT, 0xFFFFFFFF); + + rc = iwl3945_hw_nic_init(priv); + if (rc) { + IWL_ERR(priv, "Unable to int nic\n"); + return rc; + } + + /* make sure rfkill handshake bits are cleared */ + iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); + iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, + CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); + + /* clear (again), then enable host interrupts */ + iwl_write32(priv, CSR_INT, 0xFFFFFFFF); + iwl_enable_interrupts(priv); + + /* really make sure rfkill handshake bits are cleared */ + iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); + iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); + + /* Copy original ucode data image from disk into backup cache. + * This will be used to initialize the on-board processor's + * data SRAM for a clean start when the runtime program first loads. */ + memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr, + priv->ucode_data.len); + + /* We return success when we resume from suspend and rf_kill is on. */ + if (test_bit(STATUS_RF_KILL_HW, &priv->status)) + return 0; + + for (i = 0; i < MAX_HW_RESTARTS; i++) { + + /* load bootstrap state machine, + * load bootstrap program into processor's memory, + * prepare to load the "initialize" uCode */ + rc = priv->cfg->ops->lib->load_ucode(priv); + + if (rc) { + IWL_ERR(priv, + "Unable to set up bootstrap uCode: %d\n", rc); + continue; + } + + /* start card; "initialize" will load runtime ucode */ + iwl3945_nic_start(priv); + + IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n"); + + return 0; + } + + set_bit(STATUS_EXIT_PENDING, &priv->status); + __iwl3945_down(priv); + clear_bit(STATUS_EXIT_PENDING, &priv->status); + + /* tried to restart and config the device for as long as our + * patience could withstand */ + IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i); + return -EIO; +} + + +/***************************************************************************** + * + * Workqueue callbacks + * + *****************************************************************************/ + +static void iwl3945_bg_init_alive_start(struct work_struct *data) +{ + struct iwl_priv *priv = + container_of(data, struct iwl_priv, init_alive_start.work); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + mutex_lock(&priv->mutex); + iwl3945_init_alive_start(priv); + mutex_unlock(&priv->mutex); +} + +static void iwl3945_bg_alive_start(struct work_struct *data) +{ + struct iwl_priv *priv = + container_of(data, struct iwl_priv, alive_start.work); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + mutex_lock(&priv->mutex); + iwl3945_alive_start(priv); + mutex_unlock(&priv->mutex); +} + +/* + * 3945 cannot interrupt driver when hardware rf kill switch toggles; + * driver must poll CSR_GP_CNTRL_REG register for change. This register + * *is* readable even when device has been SW_RESET into low power mode + * (e.g. during RF KILL). + */ +static void iwl3945_rfkill_poll(struct work_struct *data) +{ + struct iwl_priv *priv = + container_of(data, struct iwl_priv, _3945.rfkill_poll.work); + bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status); + bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL) + & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW); + + if (new_rfkill != old_rfkill) { + if (new_rfkill) + set_bit(STATUS_RF_KILL_HW, &priv->status); + else + clear_bit(STATUS_RF_KILL_HW, &priv->status); + + wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill); + + IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n", + new_rfkill ? "disable radio" : "enable radio"); + } + + /* Keep this running, even if radio now enabled. This will be + * cancelled in mac_start() if system decides to start again */ + queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll, + round_jiffies_relative(2 * HZ)); + +} + +int iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) +{ + struct iwl_host_cmd cmd = { + .id = REPLY_SCAN_CMD, + .len = sizeof(struct iwl3945_scan_cmd), + .flags = CMD_SIZE_HUGE, + }; + struct iwl3945_scan_cmd *scan; + u8 n_probes = 0; + enum ieee80211_band band; + bool is_active = false; + int ret; + + lockdep_assert_held(&priv->mutex); + + if (!priv->scan_cmd) { + priv->scan_cmd = kmalloc(sizeof(struct iwl3945_scan_cmd) + + IWL_MAX_SCAN_SIZE, GFP_KERNEL); + if (!priv->scan_cmd) { + IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n"); + return -ENOMEM; + } + } + scan = priv->scan_cmd; + memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE); + + scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; + scan->quiet_time = IWL_ACTIVE_QUIET_TIME; + + if (iwl_is_associated(priv, IWL_RXON_CTX_BSS)) { + u16 interval = 0; + u32 extra; + u32 suspend_time = 100; + u32 scan_suspend_time = 100; + + IWL_DEBUG_INFO(priv, "Scanning while associated...\n"); + + if (priv->is_internal_short_scan) + interval = 0; + else + interval = vif->bss_conf.beacon_int; + + scan->suspend_time = 0; + scan->max_out_time = cpu_to_le32(200 * 1024); + if (!interval) + interval = suspend_time; + /* + * suspend time format: + * 0-19: beacon interval in usec (time before exec.) + * 20-23: 0 + * 24-31: number of beacons (suspend between channels) + */ + + extra = (suspend_time / interval) << 24; + scan_suspend_time = 0xFF0FFFFF & + (extra | ((suspend_time % interval) * 1024)); + + scan->suspend_time = cpu_to_le32(scan_suspend_time); + IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n", + scan_suspend_time, interval); + } + + if (priv->is_internal_short_scan) { + IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n"); + } else if (priv->scan_request->n_ssids) { + int i, p = 0; + IWL_DEBUG_SCAN(priv, "Kicking off active scan\n"); + for (i = 0; i < priv->scan_request->n_ssids; i++) { + /* always does wildcard anyway */ + if (!priv->scan_request->ssids[i].ssid_len) + continue; + scan->direct_scan[p].id = WLAN_EID_SSID; + scan->direct_scan[p].len = + priv->scan_request->ssids[i].ssid_len; + memcpy(scan->direct_scan[p].ssid, + priv->scan_request->ssids[i].ssid, + priv->scan_request->ssids[i].ssid_len); + n_probes++; + p++; + } + is_active = true; + } else + IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n"); + + /* We don't build a direct scan probe request; the uCode will do + * that based on the direct_mask added to each channel entry */ + scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; + scan->tx_cmd.sta_id = priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id; + scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; + + /* flags + rate selection */ + + switch (priv->scan_band) { + case IEEE80211_BAND_2GHZ: + scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; + scan->tx_cmd.rate = IWL_RATE_1M_PLCP; + band = IEEE80211_BAND_2GHZ; + break; + case IEEE80211_BAND_5GHZ: + scan->tx_cmd.rate = IWL_RATE_6M_PLCP; + band = IEEE80211_BAND_5GHZ; + break; + default: + IWL_WARN(priv, "Invalid scan band\n"); + return -EIO; + } + + /* + * If active scaning is requested but a certain channel + * is marked passive, we can do active scanning if we + * detect transmissions. + */ + scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT : + IWL_GOOD_CRC_TH_DISABLED; + + if (!priv->is_internal_short_scan) { + scan->tx_cmd.len = cpu_to_le16( + iwl_fill_probe_req(priv, + (struct ieee80211_mgmt *)scan->data, + vif->addr, + priv->scan_request->ie, + priv->scan_request->ie_len, + IWL_MAX_SCAN_SIZE - sizeof(*scan))); + } else { + /* use bcast addr, will not be transmitted but must be valid */ + scan->tx_cmd.len = cpu_to_le16( + iwl_fill_probe_req(priv, + (struct ieee80211_mgmt *)scan->data, + iwl_bcast_addr, NULL, 0, + IWL_MAX_SCAN_SIZE - sizeof(*scan))); + } + /* select Rx antennas */ + scan->flags |= iwl3945_get_antenna_flags(priv); + + if (priv->is_internal_short_scan) { + scan->channel_count = + iwl3945_get_single_channel_for_scan(priv, vif, band, + (void *)&scan->data[le16_to_cpu( + scan->tx_cmd.len)]); + } else { + scan->channel_count = + iwl3945_get_channels_for_scan(priv, band, is_active, n_probes, + (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif); + } + + if (scan->channel_count == 0) { + IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count); + return -EIO; + } + + cmd.len += le16_to_cpu(scan->tx_cmd.len) + + scan->channel_count * sizeof(struct iwl3945_scan_channel); + cmd.data = scan; + scan->len = cpu_to_le16(cmd.len); + + set_bit(STATUS_SCAN_HW, &priv->status); + ret = iwl_send_cmd_sync(priv, &cmd); + if (ret) + clear_bit(STATUS_SCAN_HW, &priv->status); + return ret; +} + +void iwl3945_post_scan(struct iwl_priv *priv) +{ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + /* + * Since setting the RXON may have been deferred while + * performing the scan, fire one off if needed + */ + if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) + iwl3945_commit_rxon(priv, ctx); +} + +static void iwl3945_bg_restart(struct work_struct *data) +{ + struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { + struct iwl_rxon_context *ctx; + mutex_lock(&priv->mutex); + for_each_context(priv, ctx) + ctx->vif = NULL; + priv->is_open = 0; + mutex_unlock(&priv->mutex); + iwl3945_down(priv); + ieee80211_restart_hw(priv->hw); + } else { + iwl3945_down(priv); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + mutex_lock(&priv->mutex); + __iwl3945_up(priv); + mutex_unlock(&priv->mutex); + } +} + +static void iwl3945_bg_rx_replenish(struct work_struct *data) +{ + struct iwl_priv *priv = + container_of(data, struct iwl_priv, rx_replenish); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + mutex_lock(&priv->mutex); + iwl3945_rx_replenish(priv); + mutex_unlock(&priv->mutex); +} + +void iwl3945_post_associate(struct iwl_priv *priv) +{ + int rc = 0; + struct ieee80211_conf *conf = NULL; + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + if (!ctx->vif || !priv->is_open) + return; + + if (ctx->vif->type == NL80211_IFTYPE_AP) { + IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__); + return; + } + + IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n", + ctx->vif->bss_conf.aid, ctx->active.bssid_addr); + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + iwl_scan_cancel_timeout(priv, 200); + + conf = ieee80211_get_hw_conf(priv->hw); + + ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; + iwl3945_commit_rxon(priv, ctx); + + rc = iwl_send_rxon_timing(priv, ctx); + if (rc) + IWL_WARN(priv, "REPLY_RXON_TIMING failed - " + "Attempting to continue.\n"); + + ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; + + ctx->staging.assoc_id = cpu_to_le16(ctx->vif->bss_conf.aid); + + IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n", + ctx->vif->bss_conf.aid, ctx->vif->bss_conf.beacon_int); + + if (ctx->vif->bss_conf.use_short_preamble) + ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; + else + ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; + + if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) { + if (ctx->vif->bss_conf.use_short_slot) + ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; + else + ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; + } + + iwl3945_commit_rxon(priv, ctx); + + switch (ctx->vif->type) { + case NL80211_IFTYPE_STATION: + iwl3945_rate_scale_init(priv->hw, IWL_AP_ID); + break; + case NL80211_IFTYPE_ADHOC: + iwl3945_send_beacon_cmd(priv); + break; + default: + IWL_ERR(priv, "%s Should not be called in %d mode\n", + __func__, ctx->vif->type); + break; + } +} + +/***************************************************************************** + * + * mac80211 entry point functions + * + *****************************************************************************/ + +#define UCODE_READY_TIMEOUT (2 * HZ) + +static int iwl3945_mac_start(struct ieee80211_hw *hw) +{ + struct iwl_priv *priv = hw->priv; + int ret; + + IWL_DEBUG_MAC80211(priv, "enter\n"); + + /* we should be verifying the device is ready to be opened */ + mutex_lock(&priv->mutex); + + /* fetch ucode file from disk, alloc and copy to bus-master buffers ... + * ucode filename and max sizes are card-specific. */ + + if (!priv->ucode_code.len) { + ret = iwl3945_read_ucode(priv); + if (ret) { + IWL_ERR(priv, "Could not read microcode: %d\n", ret); + mutex_unlock(&priv->mutex); + goto out_release_irq; + } + } + + ret = __iwl3945_up(priv); + + mutex_unlock(&priv->mutex); + + if (ret) + goto out_release_irq; + + IWL_DEBUG_INFO(priv, "Start UP work.\n"); + + /* Wait for START_ALIVE from ucode. Otherwise callbacks from + * mac80211 will not be run successfully. */ + ret = wait_event_interruptible_timeout(priv->wait_command_queue, + test_bit(STATUS_READY, &priv->status), + UCODE_READY_TIMEOUT); + if (!ret) { + if (!test_bit(STATUS_READY, &priv->status)) { + IWL_ERR(priv, + "Wait for START_ALIVE timeout after %dms.\n", + jiffies_to_msecs(UCODE_READY_TIMEOUT)); + ret = -ETIMEDOUT; + goto out_release_irq; + } + } + + /* ucode is running and will send rfkill notifications, + * no need to poll the killswitch state anymore */ + cancel_delayed_work(&priv->_3945.rfkill_poll); + + priv->is_open = 1; + IWL_DEBUG_MAC80211(priv, "leave\n"); + return 0; + +out_release_irq: + priv->is_open = 0; + IWL_DEBUG_MAC80211(priv, "leave - failed\n"); + return ret; +} + +static void iwl3945_mac_stop(struct ieee80211_hw *hw) +{ + struct iwl_priv *priv = hw->priv; + + IWL_DEBUG_MAC80211(priv, "enter\n"); + + if (!priv->is_open) { + IWL_DEBUG_MAC80211(priv, "leave - skip\n"); + return; + } + + priv->is_open = 0; + + iwl3945_down(priv); + + flush_workqueue(priv->workqueue); + + /* start polling the killswitch state again */ + queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll, + round_jiffies_relative(2 * HZ)); + + IWL_DEBUG_MAC80211(priv, "leave\n"); +} + +static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) +{ + struct iwl_priv *priv = hw->priv; + + IWL_DEBUG_MAC80211(priv, "enter\n"); + + IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, + ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); + + if (iwl3945_tx_skb(priv, skb)) + dev_kfree_skb_any(skb); + + IWL_DEBUG_MAC80211(priv, "leave\n"); + return NETDEV_TX_OK; +} + +void iwl3945_config_ap(struct iwl_priv *priv) +{ + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + struct ieee80211_vif *vif = ctx->vif; + int rc = 0; + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return; + + /* The following should be done only at AP bring up */ + if (!(iwl_is_associated(priv, IWL_RXON_CTX_BSS))) { + + /* RXON - unassoc (to set timing command) */ + ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; + iwl3945_commit_rxon(priv, ctx); + + /* RXON Timing */ + rc = iwl_send_rxon_timing(priv, ctx); + if (rc) + IWL_WARN(priv, "REPLY_RXON_TIMING failed - " + "Attempting to continue.\n"); + + ctx->staging.assoc_id = 0; + + if (vif->bss_conf.use_short_preamble) + ctx->staging.flags |= + RXON_FLG_SHORT_PREAMBLE_MSK; + else + ctx->staging.flags &= + ~RXON_FLG_SHORT_PREAMBLE_MSK; + + if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) { + if (vif->bss_conf.use_short_slot) + ctx->staging.flags |= + RXON_FLG_SHORT_SLOT_MSK; + else + ctx->staging.flags &= + ~RXON_FLG_SHORT_SLOT_MSK; + } + /* restore RXON assoc */ + ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; + iwl3945_commit_rxon(priv, ctx); + } + iwl3945_send_beacon_cmd(priv); + + /* FIXME - we need to add code here to detect a totally new + * configuration, reset the AP, unassoc, rxon timing, assoc, + * clear sta table, add BCAST sta... */ +} + +static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct iwl_priv *priv = hw->priv; + int ret = 0; + u8 sta_id = IWL_INVALID_STATION; + u8 static_key; + + IWL_DEBUG_MAC80211(priv, "enter\n"); + + if (iwl3945_mod_params.sw_crypto) { + IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n"); + return -EOPNOTSUPP; + } + + /* + * To support IBSS RSN, don't program group keys in IBSS, the + * hardware will then not attempt to decrypt the frames. + */ + if (vif->type == NL80211_IFTYPE_ADHOC && + !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) + return -EOPNOTSUPP; + + static_key = !iwl_is_associated(priv, IWL_RXON_CTX_BSS); + + if (!static_key) { + sta_id = iwl_sta_id_or_broadcast( + priv, &priv->contexts[IWL_RXON_CTX_BSS], sta); + if (sta_id == IWL_INVALID_STATION) + return -EINVAL; + } + + mutex_lock(&priv->mutex); + iwl_scan_cancel_timeout(priv, 100); + + switch (cmd) { + case SET_KEY: + if (static_key) + ret = iwl3945_set_static_key(priv, key); + else + ret = iwl3945_set_dynamic_key(priv, key, sta_id); + IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n"); + break; + case DISABLE_KEY: + if (static_key) + ret = iwl3945_remove_static_key(priv); + else + ret = iwl3945_clear_sta_key_info(priv, sta_id); + IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n"); + break; + default: + ret = -EINVAL; + } + + mutex_unlock(&priv->mutex); + IWL_DEBUG_MAC80211(priv, "leave\n"); + + return ret; +} + +static int iwl3945_mac_sta_add(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct iwl_priv *priv = hw->priv; + struct iwl3945_sta_priv *sta_priv = (void *)sta->drv_priv; + int ret; + bool is_ap = vif->type == NL80211_IFTYPE_STATION; + u8 sta_id; + + IWL_DEBUG_INFO(priv, "received request to add station %pM\n", + sta->addr); + mutex_lock(&priv->mutex); + IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n", + sta->addr); + sta_priv->common.sta_id = IWL_INVALID_STATION; + + + ret = iwl_add_station_common(priv, &priv->contexts[IWL_RXON_CTX_BSS], + sta->addr, is_ap, sta, &sta_id); + if (ret) { + IWL_ERR(priv, "Unable to add station %pM (%d)\n", + sta->addr, ret); + /* Should we return success if return code is EEXIST ? */ + mutex_unlock(&priv->mutex); + return ret; + } + + sta_priv->common.sta_id = sta_id; + + /* Initialize rate scaling */ + IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n", + sta->addr); + iwl3945_rs_rate_init(priv, sta, sta_id); + mutex_unlock(&priv->mutex); + + return 0; +} + +static void iwl3945_configure_filter(struct ieee80211_hw *hw, + unsigned int changed_flags, + unsigned int *total_flags, + u64 multicast) +{ + struct iwl_priv *priv = hw->priv; + __le32 filter_or = 0, filter_nand = 0; + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + +#define CHK(test, flag) do { \ + if (*total_flags & (test)) \ + filter_or |= (flag); \ + else \ + filter_nand |= (flag); \ + } while (0) + + IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n", + changed_flags, *total_flags); + + CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK); + CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK); + CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); + +#undef CHK + + mutex_lock(&priv->mutex); + + ctx->staging.filter_flags &= ~filter_nand; + ctx->staging.filter_flags |= filter_or; + + /* + * Not committing directly because hardware can perform a scan, + * but even if hw is ready, committing here breaks for some reason, + * we'll eventually commit the filter flags change anyway. + */ + + mutex_unlock(&priv->mutex); + + /* + * Receiving all multicast frames is always enabled by the + * default flags setup in iwl_connection_init_rx_config() + * since we currently do not support programming multicast + * filters into the device. + */ + *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS | + FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; +} + + +/***************************************************************************** + * + * sysfs attributes + * + *****************************************************************************/ + +#ifdef CONFIG_IWLWIFI_DEBUG + +/* + * The following adds a new attribute to the sysfs representation + * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/) + * used for controlling the debug level. + * + * See the level definitions in iwl for details. + * + * The debug_level being managed using sysfs below is a per device debug + * level that is used instead of the global debug level if it (the per + * device debug level) is set. + */ +static ssize_t show_debug_level(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv)); +} +static ssize_t store_debug_level(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + unsigned long val; + int ret; + + ret = strict_strtoul(buf, 0, &val); + if (ret) + IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf); + else { + priv->debug_level = val; + if (iwl_alloc_traffic_mem(priv)) + IWL_ERR(priv, + "Not enough memory to generate traffic log\n"); + } + return strnlen(buf, count); +} + +static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, + show_debug_level, store_debug_level); + +#endif /* CONFIG_IWLWIFI_DEBUG */ + +static ssize_t show_temperature(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + + if (!iwl_is_alive(priv)) + return -EAGAIN; + + return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv)); +} + +static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL); + +static ssize_t show_tx_power(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + return sprintf(buf, "%d\n", priv->tx_power_user_lmt); +} + +static ssize_t store_tx_power(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + char *p = (char *)buf; + u32 val; + + val = simple_strtoul(p, &p, 10); + if (p == buf) + IWL_INFO(priv, ": %s is not in decimal form.\n", buf); + else + iwl3945_hw_reg_set_txpower(priv, val); + + return count; +} + +static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power); + +static ssize_t show_flags(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + return sprintf(buf, "0x%04X\n", ctx->active.flags); +} + +static ssize_t store_flags(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + u32 flags = simple_strtoul(buf, NULL, 0); + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + mutex_lock(&priv->mutex); + if (le32_to_cpu(ctx->staging.flags) != flags) { + /* Cancel any currently running scans... */ + if (iwl_scan_cancel_timeout(priv, 100)) + IWL_WARN(priv, "Could not cancel scan.\n"); + else { + IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n", + flags); + ctx->staging.flags = cpu_to_le32(flags); + iwl3945_commit_rxon(priv, ctx); + } + } + mutex_unlock(&priv->mutex); + + return count; +} + +static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags); + +static ssize_t show_filter_flags(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + return sprintf(buf, "0x%04X\n", + le32_to_cpu(ctx->active.filter_flags)); +} + +static ssize_t store_filter_flags(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + u32 filter_flags = simple_strtoul(buf, NULL, 0); + + mutex_lock(&priv->mutex); + if (le32_to_cpu(ctx->staging.filter_flags) != filter_flags) { + /* Cancel any currently running scans... */ + if (iwl_scan_cancel_timeout(priv, 100)) + IWL_WARN(priv, "Could not cancel scan.\n"); + else { + IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = " + "0x%04X\n", filter_flags); + ctx->staging.filter_flags = + cpu_to_le32(filter_flags); + iwl3945_commit_rxon(priv, ctx); + } + } + mutex_unlock(&priv->mutex); + + return count; +} + +static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags, + store_filter_flags); + +static ssize_t show_measurement(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + struct iwl_spectrum_notification measure_report; + u32 size = sizeof(measure_report), len = 0, ofs = 0; + u8 *data = (u8 *)&measure_report; + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + if (!(priv->measurement_status & MEASUREMENT_READY)) { + spin_unlock_irqrestore(&priv->lock, flags); + return 0; + } + memcpy(&measure_report, &priv->measure_report, size); + priv->measurement_status = 0; + spin_unlock_irqrestore(&priv->lock, flags); + + while (size && (PAGE_SIZE - len)) { + hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, + PAGE_SIZE - len, 1); + len = strlen(buf); + if (PAGE_SIZE - len) + buf[len++] = '\n'; + + ofs += 16; + size -= min(size, 16U); + } + + return len; +} + +static ssize_t store_measurement(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + struct ieee80211_measurement_params params = { + .channel = le16_to_cpu(ctx->active.channel), + .start_time = cpu_to_le64(priv->_3945.last_tsf), + .duration = cpu_to_le16(1), + }; + u8 type = IWL_MEASURE_BASIC; + u8 buffer[32]; + u8 channel; + + if (count) { + char *p = buffer; + strncpy(buffer, buf, min(sizeof(buffer), count)); + channel = simple_strtoul(p, NULL, 0); + if (channel) + params.channel = channel; + + p = buffer; + while (*p && *p != ' ') + p++; + if (*p) + type = simple_strtoul(p + 1, NULL, 0); + } + + IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on " + "channel %d (for '%s')\n", type, params.channel, buf); + iwl3945_get_measurement(priv, ¶ms, type); + + return count; +} + +static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, + show_measurement, store_measurement); + +static ssize_t store_retry_rate(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + + priv->retry_rate = simple_strtoul(buf, NULL, 0); + if (priv->retry_rate <= 0) + priv->retry_rate = 1; + + return count; +} + +static ssize_t show_retry_rate(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + return sprintf(buf, "%d", priv->retry_rate); +} + +static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate, + store_retry_rate); + + +static ssize_t show_channels(struct device *d, + struct device_attribute *attr, char *buf) +{ + /* all this shit doesn't belong into sysfs anyway */ + return 0; +} + +static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL); + +static ssize_t show_antenna(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + + if (!iwl_is_alive(priv)) + return -EAGAIN; + + return sprintf(buf, "%d\n", iwl3945_mod_params.antenna); +} + +static ssize_t store_antenna(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d); + int ant; + + if (count == 0) + return 0; + + if (sscanf(buf, "%1i", &ant) != 1) { + IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n"); + return count; + } + + if ((ant >= 0) && (ant <= 2)) { + IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant); + iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant; + } else + IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant); + + + return count; +} + +static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna); + +static ssize_t show_status(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + if (!iwl_is_alive(priv)) + return -EAGAIN; + return sprintf(buf, "0x%08x\n", (int)priv->status); +} + +static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); + +static ssize_t dump_error_log(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwl_priv *priv = dev_get_drvdata(d); + char *p = (char *)buf; + + if (p[0] == '1') + iwl3945_dump_nic_error_log(priv); + + return strnlen(buf, count); +} + +static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log); + +/***************************************************************************** + * + * driver setup and tear down + * + *****************************************************************************/ + +static void iwl3945_setup_deferred_work(struct iwl_priv *priv) +{ + priv->workqueue = create_singlethread_workqueue(DRV_NAME); + + init_waitqueue_head(&priv->wait_command_queue); + + INIT_WORK(&priv->restart, iwl3945_bg_restart); + INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish); + INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update); + INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start); + INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start); + INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll); + + iwl_setup_scan_deferred_work(priv); + + iwl3945_hw_setup_deferred_work(priv); + + init_timer(&priv->watchdog); + priv->watchdog.data = (unsigned long)priv; + priv->watchdog.function = iwl_bg_watchdog; + + tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long)) + iwl3945_irq_tasklet, (unsigned long)priv); +} + +static void iwl3945_cancel_deferred_work(struct iwl_priv *priv) +{ + iwl3945_hw_cancel_deferred_work(priv); + + cancel_delayed_work_sync(&priv->init_alive_start); + cancel_delayed_work(&priv->alive_start); + cancel_work_sync(&priv->beacon_update); + + iwl_cancel_scan_deferred_work(priv); +} + +static struct attribute *iwl3945_sysfs_entries[] = { + &dev_attr_antenna.attr, + &dev_attr_channels.attr, + &dev_attr_dump_errors.attr, + &dev_attr_flags.attr, + &dev_attr_filter_flags.attr, + &dev_attr_measurement.attr, + &dev_attr_retry_rate.attr, + &dev_attr_status.attr, + &dev_attr_temperature.attr, + &dev_attr_tx_power.attr, +#ifdef CONFIG_IWLWIFI_DEBUG + &dev_attr_debug_level.attr, +#endif + NULL +}; + +static struct attribute_group iwl3945_attribute_group = { + .name = NULL, /* put in device directory */ + .attrs = iwl3945_sysfs_entries, +}; + +struct ieee80211_ops iwl3945_hw_ops = { + .tx = iwl3945_mac_tx, + .start = iwl3945_mac_start, + .stop = iwl3945_mac_stop, + .add_interface = iwl_mac_add_interface, + .remove_interface = iwl_mac_remove_interface, + .change_interface = iwl_mac_change_interface, + .config = iwl_legacy_mac_config, + .configure_filter = iwl3945_configure_filter, + .set_key = iwl3945_mac_set_key, + .conf_tx = iwl_mac_conf_tx, + .reset_tsf = iwl_legacy_mac_reset_tsf, + .bss_info_changed = iwl_legacy_mac_bss_info_changed, + .hw_scan = iwl_mac_hw_scan, + .sta_add = iwl3945_mac_sta_add, + .sta_remove = iwl_mac_sta_remove, + .tx_last_beacon = iwl_mac_tx_last_beacon, +}; + +static int iwl3945_init_drv(struct iwl_priv *priv) +{ + int ret; + struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; + + priv->retry_rate = 1; + priv->beacon_skb = NULL; + + spin_lock_init(&priv->sta_lock); + spin_lock_init(&priv->hcmd_lock); + + INIT_LIST_HEAD(&priv->free_frames); + + mutex_init(&priv->mutex); + mutex_init(&priv->sync_cmd_mutex); + + priv->ieee_channels = NULL; + priv->ieee_rates = NULL; + priv->band = IEEE80211_BAND_2GHZ; + + priv->iw_mode = NL80211_IFTYPE_STATION; + priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; + + /* initialize force reset */ + priv->force_reset[IWL_RF_RESET].reset_duration = + IWL_DELAY_NEXT_FORCE_RF_RESET; + priv->force_reset[IWL_FW_RESET].reset_duration = + IWL_DELAY_NEXT_FORCE_FW_RELOAD; + + + priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER; + priv->tx_power_next = IWL_DEFAULT_TX_POWER; + + if (eeprom->version < EEPROM_3945_EEPROM_VERSION) { + IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n", + eeprom->version); + ret = -EINVAL; + goto err; + } + ret = iwl_init_channel_map(priv); + if (ret) { + IWL_ERR(priv, "initializing regulatory failed: %d\n", ret); + goto err; + } + + /* Set up txpower settings in driver for all channels */ + if (iwl3945_txpower_set_from_eeprom(priv)) { + ret = -EIO; + goto err_free_channel_map; + } + + ret = iwlcore_init_geos(priv); + if (ret) { + IWL_ERR(priv, "initializing geos failed: %d\n", ret); + goto err_free_channel_map; + } + iwl3945_init_hw_rates(priv, priv->ieee_rates); + + return 0; + +err_free_channel_map: + iwl_free_channel_map(priv); +err: + return ret; +} + +#define IWL3945_MAX_PROBE_REQUEST 200 + +static int iwl3945_setup_mac(struct iwl_priv *priv) +{ + int ret; + struct ieee80211_hw *hw = priv->hw; + + hw->rate_control_algorithm = "iwl-3945-rs"; + hw->sta_data_size = sizeof(struct iwl3945_sta_priv); + hw->vif_data_size = sizeof(struct iwl_vif_priv); + + /* Tell mac80211 our characteristics */ + hw->flags = IEEE80211_HW_SIGNAL_DBM | + IEEE80211_HW_SPECTRUM_MGMT; + + if (!priv->cfg->base_params->broken_powersave) + hw->flags |= IEEE80211_HW_SUPPORTS_PS | + IEEE80211_HW_SUPPORTS_DYNAMIC_PS; + + hw->wiphy->interface_modes = + priv->contexts[IWL_RXON_CTX_BSS].interface_modes; + + hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | + WIPHY_FLAG_DISABLE_BEACON_HINTS | + WIPHY_FLAG_IBSS_RSN; + + hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945; + /* we create the 802.11 header and a zero-length SSID element */ + hw->wiphy->max_scan_ie_len = IWL3945_MAX_PROBE_REQUEST - 24 - 2; + + /* Default value; 4 EDCA QOS priorities */ + hw->queues = 4; + + if (priv->bands[IEEE80211_BAND_2GHZ].n_channels) + priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = + &priv->bands[IEEE80211_BAND_2GHZ]; + + if (priv->bands[IEEE80211_BAND_5GHZ].n_channels) + priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = + &priv->bands[IEEE80211_BAND_5GHZ]; + + iwl_leds_init(priv); + + ret = ieee80211_register_hw(priv->hw); + if (ret) { + IWL_ERR(priv, "Failed to register hw (error %d)\n", ret); + return ret; + } + priv->mac80211_registered = 1; + + return 0; +} + +static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + int err = 0, i; + struct iwl_priv *priv; + struct ieee80211_hw *hw; + struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data); + struct iwl3945_eeprom *eeprom; + unsigned long flags; + + /*********************** + * 1. Allocating HW data + * ********************/ + + /* mac80211 allocates memory for this device instance, including + * space for this driver's private structure */ + hw = iwl_alloc_all(cfg); + if (hw == NULL) { + pr_err("Can not allocate network device\n"); + err = -ENOMEM; + goto out; + } + priv = hw->priv; + SET_IEEE80211_DEV(hw, &pdev->dev); + + priv->cmd_queue = IWL39_CMD_QUEUE_NUM; + + /* 3945 has only one valid context */ + priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); + + for (i = 0; i < NUM_IWL_RXON_CTX; i++) + priv->contexts[i].ctxid = i; + + priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; + priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; + priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; + priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; + priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; + priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; + priv->contexts[IWL_RXON_CTX_BSS].interface_modes = + BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC); + priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; + priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; + priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; + + /* + * Disabling hardware scan means that mac80211 will perform scans + * "the hard way", rather than using device's scan. + */ + if (iwl3945_mod_params.disable_hw_scan) { + dev_printk(KERN_DEBUG, &(pdev->dev), + "sw scan support is deprecated\n"); + iwl3945_hw_ops.hw_scan = NULL; + } + + + IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); + priv->cfg = cfg; + priv->pci_dev = pdev; + priv->inta_mask = CSR_INI_SET_MASK; + + if (iwl_alloc_traffic_mem(priv)) + IWL_ERR(priv, "Not enough memory to generate traffic log\n"); + + /*************************** + * 2. Initializing PCI bus + * *************************/ + pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | + PCIE_LINK_STATE_CLKPM); + + if (pci_enable_device(pdev)) { + err = -ENODEV; + goto out_ieee80211_free_hw; + } + + pci_set_master(pdev); + + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (!err) + err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + if (err) { + IWL_WARN(priv, "No suitable DMA available.\n"); + goto out_pci_disable_device; + } + + pci_set_drvdata(pdev, priv); + err = pci_request_regions(pdev, DRV_NAME); + if (err) + goto out_pci_disable_device; + + /*********************** + * 3. Read REV Register + * ********************/ + priv->hw_base = pci_iomap(pdev, 0, 0); + if (!priv->hw_base) { + err = -ENODEV; + goto out_pci_release_regions; + } + + IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n", + (unsigned long long) pci_resource_len(pdev, 0)); + IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base); + + /* We disable the RETRY_TIMEOUT register (0x41) to keep + * PCI Tx retries from interfering with C3 CPU state */ + pci_write_config_byte(pdev, 0x41, 0x00); + + /* these spin locks will be used in apm_ops.init and EEPROM access + * we should init now + */ + spin_lock_init(&priv->reg_lock); + spin_lock_init(&priv->lock); + + /* + * stop and reset the on-board processor just in case it is in a + * strange state ... like being left stranded by a primary kernel + * and this is now the kdump kernel trying to start up + */ + iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); + + /*********************** + * 4. Read EEPROM + * ********************/ + + /* Read the EEPROM */ + err = iwl_eeprom_init(priv); + if (err) { + IWL_ERR(priv, "Unable to init EEPROM\n"); + goto out_iounmap; + } + /* MAC Address location in EEPROM same for 3945/4965 */ + eeprom = (struct iwl3945_eeprom *)priv->eeprom; + IWL_DEBUG_INFO(priv, "MAC address: %pM\n", eeprom->mac_address); + SET_IEEE80211_PERM_ADDR(priv->hw, eeprom->mac_address); + + /*********************** + * 5. Setup HW Constants + * ********************/ + /* Device-specific setup */ + if (iwl3945_hw_set_hw_params(priv)) { + IWL_ERR(priv, "failed to set hw settings\n"); + goto out_eeprom_free; + } + + /*********************** + * 6. Setup priv + * ********************/ + + err = iwl3945_init_drv(priv); + if (err) { + IWL_ERR(priv, "initializing driver failed\n"); + goto out_unset_hw_params; + } + + IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n", + priv->cfg->name); + + /*********************** + * 7. Setup Services + * ********************/ + + spin_lock_irqsave(&priv->lock, flags); + iwl_disable_interrupts(priv); + spin_unlock_irqrestore(&priv->lock, flags); + + pci_enable_msi(priv->pci_dev); + + err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr_ops.isr, + IRQF_SHARED, DRV_NAME, priv); + if (err) { + IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq); + goto out_disable_msi; + } + + err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group); + if (err) { + IWL_ERR(priv, "failed to create sysfs device attributes\n"); + goto out_release_irq; + } + + iwl_set_rxon_channel(priv, + &priv->bands[IEEE80211_BAND_2GHZ].channels[5], + &priv->contexts[IWL_RXON_CTX_BSS]); + iwl3945_setup_deferred_work(priv); + iwl3945_setup_rx_handlers(priv); + iwl_power_initialize(priv); + + /********************************* + * 8. Setup and Register mac80211 + * *******************************/ + + iwl_enable_interrupts(priv); + + err = iwl3945_setup_mac(priv); + if (err) + goto out_remove_sysfs; + + err = iwl_dbgfs_register(priv, DRV_NAME); + if (err) + IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err); + + /* Start monitoring the killswitch */ + queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll, + 2 * HZ); + + return 0; + + out_remove_sysfs: + destroy_workqueue(priv->workqueue); + priv->workqueue = NULL; + sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group); + out_release_irq: + free_irq(priv->pci_dev->irq, priv); + out_disable_msi: + pci_disable_msi(priv->pci_dev); + iwlcore_free_geos(priv); + iwl_free_channel_map(priv); + out_unset_hw_params: + iwl3945_unset_hw_params(priv); + out_eeprom_free: + iwl_eeprom_free(priv); + out_iounmap: + pci_iounmap(pdev, priv->hw_base); + out_pci_release_regions: + pci_release_regions(pdev); + out_pci_disable_device: + pci_set_drvdata(pdev, NULL); + pci_disable_device(pdev); + out_ieee80211_free_hw: + iwl_free_traffic_mem(priv); + ieee80211_free_hw(priv->hw); + out: + return err; +} + +static void __devexit iwl3945_pci_remove(struct pci_dev *pdev) +{ + struct iwl_priv *priv = pci_get_drvdata(pdev); + unsigned long flags; + + if (!priv) + return; + + IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); + + iwl_dbgfs_unregister(priv); + + set_bit(STATUS_EXIT_PENDING, &priv->status); + + iwl_leds_exit(priv); + + if (priv->mac80211_registered) { + ieee80211_unregister_hw(priv->hw); + priv->mac80211_registered = 0; + } else { + iwl3945_down(priv); + } + + /* + * Make sure device is reset to low power before unloading driver. + * This may be redundant with iwl_down(), but there are paths to + * run iwl_down() without calling apm_ops.stop(), and there are + * paths to avoid running iwl_down() at all before leaving driver. + * This (inexpensive) call *makes sure* device is reset. + */ + iwl_apm_stop(priv); + + /* make sure we flush any pending irq or + * tasklet for the driver + */ + spin_lock_irqsave(&priv->lock, flags); + iwl_disable_interrupts(priv); + spin_unlock_irqrestore(&priv->lock, flags); + + iwl_synchronize_irq(priv); + + sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group); + + cancel_delayed_work_sync(&priv->_3945.rfkill_poll); + + iwl3945_dealloc_ucode_pci(priv); + + if (priv->rxq.bd) + iwl3945_rx_queue_free(priv, &priv->rxq); + iwl3945_hw_txq_ctx_free(priv); + + iwl3945_unset_hw_params(priv); + + /*netif_stop_queue(dev); */ + flush_workqueue(priv->workqueue); + + /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes + * priv->workqueue... so we can't take down the workqueue + * until now... */ + destroy_workqueue(priv->workqueue); + priv->workqueue = NULL; + iwl_free_traffic_mem(priv); + + free_irq(pdev->irq, priv); + pci_disable_msi(pdev); + + pci_iounmap(pdev, priv->hw_base); + pci_release_regions(pdev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + + iwl_free_channel_map(priv); + iwlcore_free_geos(priv); + kfree(priv->scan_cmd); + if (priv->beacon_skb) + dev_kfree_skb(priv->beacon_skb); + + ieee80211_free_hw(priv->hw); +} + + +/***************************************************************************** + * + * driver and module entry point + * + *****************************************************************************/ + +static struct pci_driver iwl3945_driver = { + .name = DRV_NAME, + .id_table = iwl3945_hw_card_ids, + .probe = iwl3945_pci_probe, + .remove = __devexit_p(iwl3945_pci_remove), + .driver.pm = IWL_PM_OPS, +}; + +static int __init iwl3945_init(void) +{ + + int ret; + pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); + pr_info(DRV_COPYRIGHT "\n"); + + ret = iwl3945_rate_control_register(); + if (ret) { + pr_err("Unable to register rate control algorithm: %d\n", ret); + return ret; + } + + ret = pci_register_driver(&iwl3945_driver); + if (ret) { + pr_err("Unable to initialize PCI module\n"); + goto error_register; + } + + return ret; + +error_register: + iwl3945_rate_control_unregister(); + return ret; +} + +static void __exit iwl3945_exit(void) +{ + pci_unregister_driver(&iwl3945_driver); + iwl3945_rate_control_unregister(); +} + +MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX)); + +module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO); +MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); +module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO); +MODULE_PARM_DESC(swcrypto, + "using software crypto (default 1 [software])\n"); +#ifdef CONFIG_IWLWIFI_DEBUG +module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "debug output mask"); +#endif +module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, + int, S_IRUGO); +MODULE_PARM_DESC(disable_hw_scan, + "disable hardware scanning (default 0) (deprecated)"); +module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO); +MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error"); + +module_exit(iwl3945_exit); +module_init(iwl3945_init); |
