diff options
Diffstat (limited to 'drivers/net/wireless/libertas/if_cs.c')
| -rw-r--r-- | drivers/net/wireless/libertas/if_cs.c | 1006 |
1 files changed, 0 insertions, 1006 deletions
diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c deleted file mode 100644 index f499efc6abcf..000000000000 --- a/drivers/net/wireless/libertas/if_cs.c +++ /dev/null @@ -1,1006 +0,0 @@ -/* - - Driver for the Marvell 8385 based compact flash WLAN cards. - - (C) 2007 by Holger Schurig <hs4233@mail.mn-solutions.de> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - 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; see the file COPYING. If not, write to - the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, - Boston, MA 02110-1301, USA. - -*/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/moduleparam.h> -#include <linux/firmware.h> -#include <linux/netdevice.h> - -#include <pcmcia/cistpl.h> -#include <pcmcia/ds.h> - -#include <linux/io.h> - -#define DRV_NAME "libertas_cs" - -#include "decl.h" -#include "defs.h" -#include "dev.h" - - -/********************************************************************/ -/* Module stuff */ -/********************************************************************/ - -MODULE_AUTHOR("Holger Schurig <hs4233@mail.mn-solutions.de>"); -MODULE_DESCRIPTION("Driver for Marvell 83xx compact flash WLAN cards"); -MODULE_LICENSE("GPL"); - - - -/********************************************************************/ -/* Data structures */ -/********************************************************************/ - -struct if_cs_card { - struct pcmcia_device *p_dev; - struct lbs_private *priv; - void __iomem *iobase; - bool align_regs; - u32 model; -}; - - -enum { - MODEL_UNKNOWN = 0x00, - MODEL_8305 = 0x01, - MODEL_8381 = 0x02, - MODEL_8385 = 0x03 -}; - -static const struct lbs_fw_table fw_table[] = { - { MODEL_8305, "libertas/cf8305.bin", NULL }, - { MODEL_8305, "libertas_cs_helper.fw", NULL }, - { MODEL_8381, "libertas/cf8381_helper.bin", "libertas/cf8381.bin" }, - { MODEL_8381, "libertas_cs_helper.fw", "libertas_cs.fw" }, - { MODEL_8385, "libertas/cf8385_helper.bin", "libertas/cf8385.bin" }, - { MODEL_8385, "libertas_cs_helper.fw", "libertas_cs.fw" }, - { 0, NULL, NULL } -}; -MODULE_FIRMWARE("libertas/cf8305.bin"); -MODULE_FIRMWARE("libertas/cf8381_helper.bin"); -MODULE_FIRMWARE("libertas/cf8381.bin"); -MODULE_FIRMWARE("libertas/cf8385_helper.bin"); -MODULE_FIRMWARE("libertas/cf8385.bin"); -MODULE_FIRMWARE("libertas_cs_helper.fw"); -MODULE_FIRMWARE("libertas_cs.fw"); - - -/********************************************************************/ -/* Hardware access */ -/********************************************************************/ - -/* This define enables wrapper functions which allow you - to dump all register accesses. You normally won't this, - except for development */ -/* #define DEBUG_IO */ - -#ifdef DEBUG_IO -static int debug_output = 0; -#else -/* This way the compiler optimizes the printk's away */ -#define debug_output 0 -#endif - -static inline unsigned int if_cs_read8(struct if_cs_card *card, uint reg) -{ - unsigned int val = ioread8(card->iobase + reg); - if (debug_output) - printk(KERN_INFO "inb %08x<%02x\n", reg, val); - return val; -} -static inline unsigned int if_cs_read16(struct if_cs_card *card, uint reg) -{ - unsigned int val = ioread16(card->iobase + reg); - if (debug_output) - printk(KERN_INFO "inw %08x<%04x\n", reg, val); - return val; -} -static inline void if_cs_read16_rep( - struct if_cs_card *card, - uint reg, - void *buf, - unsigned long count) -{ - if (debug_output) - printk(KERN_INFO "insw %08x<(0x%lx words)\n", - reg, count); - ioread16_rep(card->iobase + reg, buf, count); -} - -static inline void if_cs_write8(struct if_cs_card *card, uint reg, u8 val) -{ - if (debug_output) - printk(KERN_INFO "outb %08x>%02x\n", reg, val); - iowrite8(val, card->iobase + reg); -} - -static inline void if_cs_write16(struct if_cs_card *card, uint reg, u16 val) -{ - if (debug_output) - printk(KERN_INFO "outw %08x>%04x\n", reg, val); - iowrite16(val, card->iobase + reg); -} - -static inline void if_cs_write16_rep( - struct if_cs_card *card, - uint reg, - const void *buf, - unsigned long count) -{ - if (debug_output) - printk(KERN_INFO "outsw %08x>(0x%lx words)\n", - reg, count); - iowrite16_rep(card->iobase + reg, buf, count); -} - - -/* - * I know that polling/delaying is frowned upon. However, this procedure - * with polling is needed while downloading the firmware. At this stage, - * the hardware does unfortunately not create any interrupts. - * - * Fortunately, this function is never used once the firmware is in - * the card. :-) - * - * As a reference, see the "Firmware Specification v5.1", page 18 - * and 19. I did not follow their suggested timing to the word, - * but this works nice & fast anyway. - */ -static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 reg) -{ - int i; - - for (i = 0; i < 100000; i++) { - u8 val = if_cs_read8(card, addr); - if (val == reg) - return 0; - udelay(5); - } - return -ETIME; -} - - - -/* - * First the bitmasks for the host/card interrupt/status registers: - */ -#define IF_CS_BIT_TX 0x0001 -#define IF_CS_BIT_RX 0x0002 -#define IF_CS_BIT_COMMAND 0x0004 -#define IF_CS_BIT_RESP 0x0008 -#define IF_CS_BIT_EVENT 0x0010 -#define IF_CS_BIT_MASK 0x001f - - - -/* - * It's not really clear to me what the host status register is for. It - * needs to be set almost in union with "host int cause". The following - * bits from above are used: - * - * IF_CS_BIT_TX driver downloaded a data packet - * IF_CS_BIT_RX driver got a data packet - * IF_CS_BIT_COMMAND driver downloaded a command - * IF_CS_BIT_RESP not used (has some meaning with powerdown) - * IF_CS_BIT_EVENT driver read a host event - */ -#define IF_CS_HOST_STATUS 0x00000000 - -/* - * With the host int cause register can the host (that is, Linux) cause - * an interrupt in the firmware, to tell the firmware about those events: - * - * IF_CS_BIT_TX a data packet has been downloaded - * IF_CS_BIT_RX a received data packet has retrieved - * IF_CS_BIT_COMMAND a firmware block or a command has been downloaded - * IF_CS_BIT_RESP not used (has some meaning with powerdown) - * IF_CS_BIT_EVENT a host event (link lost etc) has been retrieved - */ -#define IF_CS_HOST_INT_CAUSE 0x00000002 - -/* - * The host int mask register is used to enable/disable interrupt. However, - * I have the suspicion that disabled interrupts are lost. - */ -#define IF_CS_HOST_INT_MASK 0x00000004 - -/* - * Used to send or receive data packets: - */ -#define IF_CS_WRITE 0x00000016 -#define IF_CS_WRITE_LEN 0x00000014 -#define IF_CS_READ 0x00000010 -#define IF_CS_READ_LEN 0x00000024 - -/* - * Used to send commands (and to send firmware block) and to - * receive command responses: - */ -#define IF_CS_CMD 0x0000001A -#define IF_CS_CMD_LEN 0x00000018 -#define IF_CS_RESP 0x00000012 -#define IF_CS_RESP_LEN 0x00000030 - -/* - * The card status registers shows what the card/firmware actually - * accepts: - * - * IF_CS_BIT_TX you may send a data packet - * IF_CS_BIT_RX you may retrieve a data packet - * IF_CS_BIT_COMMAND you may send a command - * IF_CS_BIT_RESP you may retrieve a command response - * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc) - * - * When reading this register several times, you will get back the same - * results --- with one exception: the IF_CS_BIT_EVENT clear itself - * automatically. - * - * Not that we don't rely on BIT_RX,_BIT_RESP or BIT_EVENT because - * we handle this via the card int cause register. - */ -#define IF_CS_CARD_STATUS 0x00000020 -#define IF_CS_CARD_STATUS_MASK 0x7f00 - -/* - * The card int cause register is used by the card/firmware to notify us - * about the following events: - * - * IF_CS_BIT_TX a data packet has successfully been sentx - * IF_CS_BIT_RX a data packet has been received and can be retrieved - * IF_CS_BIT_COMMAND not used - * IF_CS_BIT_RESP the firmware has a command response for us - * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc) - */ -#define IF_CS_CARD_INT_CAUSE 0x00000022 - -/* - * This is used to for handshaking with the card's bootloader/helper image - * to synchronize downloading of firmware blocks. - */ -#define IF_CS_SQ_READ_LOW 0x00000028 -#define IF_CS_SQ_HELPER_OK 0x10 - -/* - * The scratch register tells us ... - * - * IF_CS_SCRATCH_BOOT_OK the bootloader runs - * IF_CS_SCRATCH_HELPER_OK the helper firmware already runs - */ -#define IF_CS_SCRATCH 0x0000003F -#define IF_CS_SCRATCH_BOOT_OK 0x00 -#define IF_CS_SCRATCH_HELPER_OK 0x5a - -/* - * Used to detect ancient chips: - */ -#define IF_CS_PRODUCT_ID 0x0000001C -#define IF_CS_CF8385_B1_REV 0x12 -#define IF_CS_CF8381_B3_REV 0x04 -#define IF_CS_CF8305_B1_REV 0x03 - -/* - * Used to detect other cards than CF8385 since their revisions of silicon - * doesn't match those from CF8385, eg. CF8381 B3 works with this driver. - */ -#define CF8305_MANFID 0x02db -#define CF8305_CARDID 0x8103 -#define CF8381_MANFID 0x02db -#define CF8381_CARDID 0x6064 -#define CF8385_MANFID 0x02df -#define CF8385_CARDID 0x8103 - -/* - * FIXME: just use the 'driver_info' field of 'struct pcmcia_device_id' when - * that gets fixed. Currently there's no way to access it from the probe hook. - */ -static inline u32 get_model(u16 manf_id, u16 card_id) -{ - /* NOTE: keep in sync with if_cs_ids */ - if (manf_id == CF8305_MANFID && card_id == CF8305_CARDID) - return MODEL_8305; - else if (manf_id == CF8381_MANFID && card_id == CF8381_CARDID) - return MODEL_8381; - else if (manf_id == CF8385_MANFID && card_id == CF8385_CARDID) - return MODEL_8385; - return MODEL_UNKNOWN; -} - -/********************************************************************/ -/* I/O and interrupt handling */ -/********************************************************************/ - -static inline void if_cs_enable_ints(struct if_cs_card *card) -{ - lbs_deb_enter(LBS_DEB_CS); - if_cs_write16(card, IF_CS_HOST_INT_MASK, 0); -} - -static inline void if_cs_disable_ints(struct if_cs_card *card) -{ - lbs_deb_enter(LBS_DEB_CS); - if_cs_write16(card, IF_CS_HOST_INT_MASK, IF_CS_BIT_MASK); -} - -/* - * Called from if_cs_host_to_card to send a command to the hardware - */ -static int if_cs_send_cmd(struct lbs_private *priv, u8 *buf, u16 nb) -{ - struct if_cs_card *card = (struct if_cs_card *)priv->card; - int ret = -1; - int loops = 0; - - lbs_deb_enter(LBS_DEB_CS); - if_cs_disable_ints(card); - - /* Is hardware ready? */ - while (1) { - u16 status = if_cs_read16(card, IF_CS_CARD_STATUS); - if (status & IF_CS_BIT_COMMAND) - break; - if (++loops > 100) { - netdev_err(priv->dev, "card not ready for commands\n"); - goto done; - } - mdelay(1); - } - - if_cs_write16(card, IF_CS_CMD_LEN, nb); - - if_cs_write16_rep(card, IF_CS_CMD, buf, nb / 2); - /* Are we supposed to transfer an odd amount of bytes? */ - if (nb & 1) - if_cs_write8(card, IF_CS_CMD, buf[nb-1]); - - /* "Assert the download over interrupt command in the Host - * status register" */ - if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND); - - /* "Assert the download over interrupt command in the Card - * interrupt case register" */ - if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND); - ret = 0; - -done: - if_cs_enable_ints(card); - lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); - return ret; -} - -/* - * Called from if_cs_host_to_card to send a data to the hardware - */ -static void if_cs_send_data(struct lbs_private *priv, u8 *buf, u16 nb) -{ - struct if_cs_card *card = (struct if_cs_card *)priv->card; - u16 status; - - lbs_deb_enter(LBS_DEB_CS); - if_cs_disable_ints(card); - - status = if_cs_read16(card, IF_CS_CARD_STATUS); - BUG_ON((status & IF_CS_BIT_TX) == 0); - - if_cs_write16(card, IF_CS_WRITE_LEN, nb); - - /* write even number of bytes, then odd byte if necessary */ - if_cs_write16_rep(card, IF_CS_WRITE, buf, nb / 2); - if (nb & 1) - if_cs_write8(card, IF_CS_WRITE, buf[nb-1]); - - if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_TX); - if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_TX); - if_cs_enable_ints(card); - - lbs_deb_leave(LBS_DEB_CS); -} - -/* - * Get the command result out of the card. - */ -static int if_cs_receive_cmdres(struct lbs_private *priv, u8 *data, u32 *len) -{ - unsigned long flags; - int ret = -1; - u16 status; - - lbs_deb_enter(LBS_DEB_CS); - - /* is hardware ready? */ - status = if_cs_read16(priv->card, IF_CS_CARD_STATUS); - if ((status & IF_CS_BIT_RESP) == 0) { - netdev_err(priv->dev, "no cmd response in card\n"); - *len = 0; - goto out; - } - - *len = if_cs_read16(priv->card, IF_CS_RESP_LEN); - if ((*len == 0) || (*len > LBS_CMD_BUFFER_SIZE)) { - netdev_err(priv->dev, - "card cmd buffer has invalid # of bytes (%d)\n", - *len); - goto out; - } - - /* read even number of bytes, then odd byte if necessary */ - if_cs_read16_rep(priv->card, IF_CS_RESP, data, *len/sizeof(u16)); - if (*len & 1) - data[*len-1] = if_cs_read8(priv->card, IF_CS_RESP); - - /* This is a workaround for a firmware that reports too much - * bytes */ - *len -= 8; - ret = 0; - - /* Clear this flag again */ - spin_lock_irqsave(&priv->driver_lock, flags); - priv->dnld_sent = DNLD_RES_RECEIVED; - spin_unlock_irqrestore(&priv->driver_lock, flags); - -out: - lbs_deb_leave_args(LBS_DEB_CS, "ret %d, len %d", ret, *len); - return ret; -} - -static struct sk_buff *if_cs_receive_data(struct lbs_private *priv) -{ - struct sk_buff *skb = NULL; - u16 len; - u8 *data; - - lbs_deb_enter(LBS_DEB_CS); - - len = if_cs_read16(priv->card, IF_CS_READ_LEN); - if (len == 0 || len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) { - netdev_err(priv->dev, - "card data buffer has invalid # of bytes (%d)\n", - len); - priv->dev->stats.rx_dropped++; - goto dat_err; - } - - skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + 2); - if (!skb) - goto out; - skb_put(skb, len); - skb_reserve(skb, 2);/* 16 byte align */ - data = skb->data; - - /* read even number of bytes, then odd byte if necessary */ - if_cs_read16_rep(priv->card, IF_CS_READ, data, len/sizeof(u16)); - if (len & 1) - data[len-1] = if_cs_read8(priv->card, IF_CS_READ); - -dat_err: - if_cs_write16(priv->card, IF_CS_HOST_STATUS, IF_CS_BIT_RX); - if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_RX); - -out: - lbs_deb_leave_args(LBS_DEB_CS, "ret %p", skb); - return skb; -} - -static irqreturn_t if_cs_interrupt(int irq, void *data) -{ - struct if_cs_card *card = data; - struct lbs_private *priv = card->priv; - u16 cause; - - lbs_deb_enter(LBS_DEB_CS); - - /* Ask card interrupt cause register if there is something for us */ - cause = if_cs_read16(card, IF_CS_CARD_INT_CAUSE); - lbs_deb_cs("cause 0x%04x\n", cause); - - if (cause == 0) { - /* Not for us */ - return IRQ_NONE; - } - - if (cause == 0xffff) { - /* Read in junk, the card has probably been removed */ - card->priv->surpriseremoved = 1; - return IRQ_HANDLED; - } - - if (cause & IF_CS_BIT_RX) { - struct sk_buff *skb; - lbs_deb_cs("rx packet\n"); - skb = if_cs_receive_data(priv); - if (skb) - lbs_process_rxed_packet(priv, skb); - } - - if (cause & IF_CS_BIT_TX) { - lbs_deb_cs("tx done\n"); - lbs_host_to_card_done(priv); - } - - if (cause & IF_CS_BIT_RESP) { - unsigned long flags; - u8 i; - - lbs_deb_cs("cmd resp\n"); - spin_lock_irqsave(&priv->driver_lock, flags); - i = (priv->resp_idx == 0) ? 1 : 0; - spin_unlock_irqrestore(&priv->driver_lock, flags); - - BUG_ON(priv->resp_len[i]); - if_cs_receive_cmdres(priv, priv->resp_buf[i], - &priv->resp_len[i]); - - spin_lock_irqsave(&priv->driver_lock, flags); - lbs_notify_command_response(priv, i); - spin_unlock_irqrestore(&priv->driver_lock, flags); - } - - if (cause & IF_CS_BIT_EVENT) { - u16 status = if_cs_read16(priv->card, IF_CS_CARD_STATUS); - if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE, - IF_CS_BIT_EVENT); - lbs_queue_event(priv, (status & IF_CS_CARD_STATUS_MASK) >> 8); - } - - /* Clear interrupt cause */ - if_cs_write16(card, IF_CS_CARD_INT_CAUSE, cause & IF_CS_BIT_MASK); - - lbs_deb_leave(LBS_DEB_CS); - return IRQ_HANDLED; -} - - - - -/********************************************************************/ -/* Firmware */ -/********************************************************************/ - -/* - * Tries to program the helper firmware. - * - * Return 0 on success - */ -static int if_cs_prog_helper(struct if_cs_card *card, const struct firmware *fw) -{ - int ret = 0; - int sent = 0; - u8 scratch; - - lbs_deb_enter(LBS_DEB_CS); - - /* - * This is the only place where an unaligned register access happens on - * the CF8305 card, therefore for the sake of speed of the driver, we do - * the alignment correction here. - */ - if (card->align_regs) - scratch = if_cs_read16(card, IF_CS_SCRATCH) >> 8; - else - scratch = if_cs_read8(card, IF_CS_SCRATCH); - - /* "If the value is 0x5a, the firmware is already - * downloaded successfully" - */ - if (scratch == IF_CS_SCRATCH_HELPER_OK) - goto done; - - /* "If the value is != 00, it is invalid value of register */ - if (scratch != IF_CS_SCRATCH_BOOT_OK) { - ret = -ENODEV; - goto done; - } - - lbs_deb_cs("helper size %td\n", fw->size); - - /* "Set the 5 bytes of the helper image to 0" */ - /* Not needed, this contains an ARM branch instruction */ - - for (;;) { - /* "the number of bytes to send is 256" */ - int count = 256; - int remain = fw->size - sent; - - if (remain < count) - count = remain; - - /* - * "write the number of bytes to be sent to the I/O Command - * write length register" - */ - if_cs_write16(card, IF_CS_CMD_LEN, count); - - /* "write this to I/O Command port register as 16 bit writes */ - if (count) - if_cs_write16_rep(card, IF_CS_CMD, - &fw->data[sent], - count >> 1); - - /* - * "Assert the download over interrupt command in the Host - * status register" - */ - if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND); - - /* - * "Assert the download over interrupt command in the Card - * interrupt case register" - */ - if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND); - - /* - * "The host polls the Card Status register ... for 50 ms before - * declaring a failure" - */ - ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS, - IF_CS_BIT_COMMAND); - if (ret < 0) { - pr_err("can't download helper at 0x%x, ret %d\n", - sent, ret); - goto done; - } - - if (count == 0) - break; - - sent += count; - } - -done: - lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); - return ret; -} - - -static int if_cs_prog_real(struct if_cs_card *card, const struct firmware *fw) -{ - int ret = 0; - int retry = 0; - int len = 0; - int sent; - - lbs_deb_enter(LBS_DEB_CS); - - lbs_deb_cs("fw size %td\n", fw->size); - - ret = if_cs_poll_while_fw_download(card, IF_CS_SQ_READ_LOW, - IF_CS_SQ_HELPER_OK); - if (ret < 0) { - pr_err("helper firmware doesn't answer\n"); - goto done; - } - - for (sent = 0; sent < fw->size; sent += len) { - len = if_cs_read16(card, IF_CS_SQ_READ_LOW); - if (len & 1) { - retry++; - pr_info("odd, need to retry this firmware block\n"); - } else { - retry = 0; - } - - if (retry > 20) { - pr_err("could not download firmware\n"); - ret = -ENODEV; - goto done; - } - if (retry) { - sent -= len; - } - - - if_cs_write16(card, IF_CS_CMD_LEN, len); - - if_cs_write16_rep(card, IF_CS_CMD, - &fw->data[sent], - (len+1) >> 1); - if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND); - if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND); - - ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS, - IF_CS_BIT_COMMAND); - if (ret < 0) { - pr_err("can't download firmware at 0x%x\n", sent); - goto done; - } - } - - ret = if_cs_poll_while_fw_download(card, IF_CS_SCRATCH, 0x5a); - if (ret < 0) - pr_err("firmware download failed\n"); - -done: - lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); - return ret; -} - -static void if_cs_prog_firmware(struct lbs_private *priv, int ret, - const struct firmware *helper, - const struct firmware *mainfw) -{ - struct if_cs_card *card = priv->card; - - if (ret) { - pr_err("failed to find firmware (%d)\n", ret); - return; - } - - /* Load the firmware */ - ret = if_cs_prog_helper(card, helper); - if (ret == 0 && (card->model != MODEL_8305)) - ret = if_cs_prog_real(card, mainfw); - if (ret) - return; - - /* Now actually get the IRQ */ - ret = request_irq(card->p_dev->irq, if_cs_interrupt, - IRQF_SHARED, DRV_NAME, card); - if (ret) { - pr_err("error in request_irq\n"); - return; - } - - /* - * Clear any interrupt cause that happened while sending - * firmware/initializing card - */ - if_cs_write16(card, IF_CS_CARD_INT_CAUSE, IF_CS_BIT_MASK); - if_cs_enable_ints(card); - - /* And finally bring the card up */ - priv->fw_ready = 1; - if (lbs_start_card(priv) != 0) { - pr_err("could not activate card\n"); - free_irq(card->p_dev->irq, card); - } -} - - -/********************************************************************/ -/* Callback functions for libertas.ko */ -/********************************************************************/ - -/* Send commands or data packets to the card */ -static int if_cs_host_to_card(struct lbs_private *priv, - u8 type, - u8 *buf, - u16 nb) -{ - int ret = -1; - - lbs_deb_enter_args(LBS_DEB_CS, "type %d, bytes %d", type, nb); - - switch (type) { - case MVMS_DAT: - priv->dnld_sent = DNLD_DATA_SENT; - if_cs_send_data(priv, buf, nb); - ret = 0; - break; - case MVMS_CMD: - priv->dnld_sent = DNLD_CMD_SENT; - ret = if_cs_send_cmd(priv, buf, nb); - break; - default: - netdev_err(priv->dev, "%s: unsupported type %d\n", - __func__, type); - } - - lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); - return ret; -} - - -static void if_cs_release(struct pcmcia_device *p_dev) -{ - struct if_cs_card *card = p_dev->priv; - - lbs_deb_enter(LBS_DEB_CS); - - free_irq(p_dev->irq, card); - pcmcia_disable_device(p_dev); - if (card->iobase) - ioport_unmap(card->iobase); - - lbs_deb_leave(LBS_DEB_CS); -} - - -static int if_cs_ioprobe(struct pcmcia_device *p_dev, void *priv_data) -{ - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - - if (p_dev->resource[1]->end) { - pr_err("wrong CIS (check number of IO windows)\n"); - return -ENODEV; - } - - /* This reserves IO space but doesn't actually enable it */ - return pcmcia_request_io(p_dev); -} - -static int if_cs_probe(struct pcmcia_device *p_dev) -{ - int ret = -ENOMEM; - unsigned int prod_id; - struct lbs_private *priv; - struct if_cs_card *card; - - lbs_deb_enter(LBS_DEB_CS); - - card = kzalloc(sizeof(struct if_cs_card), GFP_KERNEL); - if (!card) - goto out; - - card->p_dev = p_dev; - p_dev->priv = card; - - p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; - - if (pcmcia_loop_config(p_dev, if_cs_ioprobe, NULL)) { - pr_err("error in pcmcia_loop_config\n"); - goto out1; - } - - /* - * Allocate an interrupt line. Note that this does not assign - * a handler to the interrupt, unless the 'Handler' member of - * the irq structure is initialized. - */ - if (!p_dev->irq) - goto out1; - - /* Initialize io access */ - card->iobase = ioport_map(p_dev->resource[0]->start, - resource_size(p_dev->resource[0])); - if (!card->iobase) { - pr_err("error in ioport_map\n"); - ret = -EIO; - goto out1; - } - - ret = pcmcia_enable_device(p_dev); - if (ret) { - pr_err("error in pcmcia_enable_device\n"); - goto out2; - } - - /* Finally, report what we've done */ - lbs_deb_cs("irq %d, io %pR", p_dev->irq, p_dev->resource[0]); - - /* - * Most of the libertas cards can do unaligned register access, but some - * weird ones cannot. That's especially true for the CF8305 card. - */ - card->align_regs = false; - - card->model = get_model(p_dev->manf_id, p_dev->card_id); - if (card->model == MODEL_UNKNOWN) { - pr_err("unsupported manf_id 0x%04x / card_id 0x%04x\n", - p_dev->manf_id, p_dev->card_id); - ret = -ENODEV; - goto out2; - } - - /* Check if we have a current silicon */ - prod_id = if_cs_read8(card, IF_CS_PRODUCT_ID); - if (card->model == MODEL_8305) { - card->align_regs = true; - if (prod_id < IF_CS_CF8305_B1_REV) { - pr_err("8305 rev B0 and older are not supported\n"); - ret = -ENODEV; - goto out2; - } - } - - if ((card->model == MODEL_8381) && prod_id < IF_CS_CF8381_B3_REV) { - pr_err("8381 rev B2 and older are not supported\n"); - ret = -ENODEV; - goto out2; - } - - if ((card->model == MODEL_8385) && prod_id < IF_CS_CF8385_B1_REV) { - pr_err("8385 rev B0 and older are not supported\n"); - ret = -ENODEV; - goto out2; - } - - /* Make this card known to the libertas driver */ - priv = lbs_add_card(card, &p_dev->dev); - if (!priv) { - ret = -ENOMEM; - goto out2; - } - - /* Set up fields in lbs_private */ - card->priv = priv; - priv->card = card; - priv->hw_host_to_card = if_cs_host_to_card; - priv->enter_deep_sleep = NULL; - priv->exit_deep_sleep = NULL; - priv->reset_deep_sleep_wakeup = NULL; - - /* Get firmware */ - ret = lbs_get_firmware_async(priv, &p_dev->dev, card->model, fw_table, - if_cs_prog_firmware); - if (ret) { - pr_err("failed to find firmware (%d)\n", ret); - goto out3; - } - - goto out; - -out3: - lbs_remove_card(priv); -out2: - ioport_unmap(card->iobase); -out1: - pcmcia_disable_device(p_dev); -out: - lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret); - return ret; -} - - -static void if_cs_detach(struct pcmcia_device *p_dev) -{ - struct if_cs_card *card = p_dev->priv; - - lbs_deb_enter(LBS_DEB_CS); - - lbs_stop_card(card->priv); - lbs_remove_card(card->priv); - if_cs_disable_ints(card); - if_cs_release(p_dev); - kfree(card); - - lbs_deb_leave(LBS_DEB_CS); -} - - - -/********************************************************************/ -/* Module initialization */ -/********************************************************************/ - -static const struct pcmcia_device_id if_cs_ids[] = { - PCMCIA_DEVICE_MANF_CARD(CF8305_MANFID, CF8305_CARDID), - PCMCIA_DEVICE_MANF_CARD(CF8381_MANFID, CF8381_CARDID), - PCMCIA_DEVICE_MANF_CARD(CF8385_MANFID, CF8385_CARDID), - /* NOTE: keep in sync with get_model() */ - PCMCIA_DEVICE_NULL, -}; -MODULE_DEVICE_TABLE(pcmcia, if_cs_ids); - -static struct pcmcia_driver lbs_driver = { - .owner = THIS_MODULE, - .name = DRV_NAME, - .probe = if_cs_probe, - .remove = if_cs_detach, - .id_table = if_cs_ids, -}; -module_pcmcia_driver(lbs_driver); |
