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linux-sg2042/drivers/net/wireless/libertas/if_sdio.c

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/*
* linux/drivers/net/wireless/libertas/if_sdio.c
*
* Copyright 2007 Pierre Ossman
*
* Inspired by if_cs.c, Copyright 2007 Holger Schurig
*
* 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 hardware has more or less no CMD53 support, so all registers
* must be accessed using sdio_readb()/sdio_writeb().
*
* Transfers must be in one transaction or the firmware goes bonkers.
* This means that the transfer must either be small enough to do a
* byte based transfer or it must be padded to a multiple of the
* current block size.
*
* As SDIO is still new to the kernel, it is unfortunately common with
* bugs in the host controllers related to that. One such bug is that
* controllers cannot do transfers that aren't a multiple of 4 bytes.
* If you don't have time to fix the host controller driver, you can
* work around the problem by modifying if_sdio_host_to_card() and
* if_sdio_card_to_host() to pad the data.
*/
#include <linux/moduleparam.h>
#include <linux/firmware.h>
#include <linux/netdevice.h>
#include <linux/delay.h>
#include <linux/mmc/card.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include "host.h"
#include "decl.h"
#include "defs.h"
#include "dev.h"
#include "if_sdio.h"
static char *libertas_helper_name = NULL;
module_param_named(helper_name, libertas_helper_name, charp, 0644);
static char *libertas_fw_name = NULL;
module_param_named(fw_name, libertas_fw_name, charp, 0644);
static const struct sdio_device_id if_sdio_ids[] = {
{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
struct if_sdio_model {
int model;
const char *helper;
const char *firmware;
};
static struct if_sdio_model if_sdio_models[] = {
{
/* 8385 */
.model = 0x04,
.helper = "sd8385_helper.bin",
.firmware = "sd8385.bin",
},
{
/* 8686 */
.model = 0x0B,
.helper = "sd8686_helper.bin",
.firmware = "sd8686.bin",
},
};
struct if_sdio_packet {
struct if_sdio_packet *next;
u16 nb;
u8 buffer[0] __attribute__((aligned(4)));
};
struct if_sdio_card {
struct sdio_func *func;
wlan_private *priv;
int model;
unsigned long ioport;
const char *helper;
const char *firmware;
u8 buffer[65536];
u8 int_cause;
u32 event;
spinlock_t lock;
struct if_sdio_packet *packets;
struct work_struct packet_worker;
};
/********************************************************************/
/* I/O */
/********************************************************************/
static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
{
int ret, reg;
u16 scratch;
if (card->model == 0x04)
reg = IF_SDIO_SCRATCH_OLD;
else
reg = IF_SDIO_SCRATCH;
scratch = sdio_readb(card->func, reg, &ret);
if (!ret)
scratch |= sdio_readb(card->func, reg + 1, &ret) << 8;
if (err)
*err = ret;
if (ret)
return 0xffff;
return scratch;
}
static int if_sdio_handle_cmd(struct if_sdio_card *card,
u8 *buffer, unsigned size)
{
int ret;
unsigned long flags;
lbs_deb_enter(LBS_DEB_SDIO);
spin_lock_irqsave(&card->priv->adapter->driver_lock, flags);
if (!card->priv->adapter->cur_cmd) {
lbs_deb_sdio("discarding spurious response\n");
ret = 0;
goto out;
}
if (size > MRVDRV_SIZE_OF_CMD_BUFFER) {
lbs_deb_sdio("response packet too large (%d bytes)\n",
(int)size);
ret = -E2BIG;
goto out;
}
memcpy(card->priv->adapter->cur_cmd->bufvirtualaddr, buffer, size);
card->priv->upld_len = size;
card->int_cause |= MRVDRV_CMD_UPLD_RDY;
libertas_interrupt(card->priv->dev);
ret = 0;
out:
spin_unlock_irqrestore(&card->priv->adapter->driver_lock, flags);
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
static int if_sdio_handle_data(struct if_sdio_card *card,
u8 *buffer, unsigned size)
{
int ret;
struct sk_buff *skb;
char *data;
lbs_deb_enter(LBS_DEB_SDIO);
if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
lbs_deb_sdio("response packet too large (%d bytes)\n",
(int)size);
ret = -E2BIG;
goto out;
}
skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
if (!skb) {
ret = -ENOMEM;
goto out;
}
data = skb_put(skb, size);
memcpy(data, buffer, size);
libertas_process_rxed_packet(card->priv, skb);
ret = 0;
out:
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
static int if_sdio_handle_event(struct if_sdio_card *card,
u8 *buffer, unsigned size)
{
int ret;
unsigned long flags;
u32 event;
lbs_deb_enter(LBS_DEB_SDIO);
if (card->model == 0x04) {
event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
if (ret)
goto out;
} else {
if (size < 4) {
lbs_deb_sdio("event packet too small (%d bytes)\n",
(int)size);
ret = -EINVAL;
goto out;
}
event = buffer[3] << 24;
event |= buffer[2] << 16;
event |= buffer[1] << 8;
event |= buffer[0] << 0;
event <<= SBI_EVENT_CAUSE_SHIFT;
}
spin_lock_irqsave(&card->priv->adapter->driver_lock, flags);
card->event = event;
card->int_cause |= MRVDRV_CARDEVENT;
libertas_interrupt(card->priv->dev);
spin_unlock_irqrestore(&card->priv->adapter->driver_lock, flags);
ret = 0;
out:
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
static int if_sdio_card_to_host(struct if_sdio_card *card)
{
int ret;
u8 status;
u16 size, type, chunk;
unsigned long timeout;
lbs_deb_enter(LBS_DEB_SDIO);
size = if_sdio_read_scratch(card, &ret);
if (ret)
goto out;
if (size < 4) {
lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
(int)size);
ret = -EINVAL;
goto out;
}
timeout = jiffies + HZ;
while (1) {
status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
if (ret)
goto out;
if (status & IF_SDIO_IO_RDY)
break;
if (time_after(jiffies, timeout)) {
ret = -ETIMEDOUT;
goto out;
}
mdelay(1);
}
/*
* The transfer must be in one transaction or the firmware
* goes suicidal.
*/
chunk = size;
if ((chunk > card->func->cur_blksize) || (chunk > 512)) {
chunk = (chunk + card->func->cur_blksize - 1) /
card->func->cur_blksize * card->func->cur_blksize;
}
ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
if (ret)
goto out;
chunk = card->buffer[0] | (card->buffer[1] << 8);
type = card->buffer[2] | (card->buffer[3] << 8);
lbs_deb_sdio("packet of type %d and size %d bytes\n",
(int)type, (int)chunk);
if (chunk > size) {
lbs_deb_sdio("packet fragment (%d > %d)\n",
(int)chunk, (int)size);
ret = -EINVAL;
goto out;
}
if (chunk < size) {
lbs_deb_sdio("packet fragment (%d < %d)\n",
(int)chunk, (int)size);
}
switch (type) {
case MVMS_CMD:
ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
if (ret)
goto out;
break;
case MVMS_DAT:
ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
if (ret)
goto out;
break;
case MVMS_EVENT:
ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
if (ret)
goto out;
break;
default:
lbs_deb_sdio("invalid type (%d) from firmware\n",
(int)type);
ret = -EINVAL;
goto out;
}
out:
if (ret)
lbs_pr_err("problem fetching packet from firmware\n");
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
static void if_sdio_host_to_card_worker(struct work_struct *work)
{
struct if_sdio_card *card;
struct if_sdio_packet *packet;
unsigned long timeout;
u8 status;
int ret;
unsigned long flags;
lbs_deb_enter(LBS_DEB_SDIO);
card = container_of(work, struct if_sdio_card, packet_worker);
while (1) {
spin_lock_irqsave(&card->lock, flags);
packet = card->packets;
if (packet)
card->packets = packet->next;
spin_unlock_irqrestore(&card->lock, flags);
if (!packet)
break;
sdio_claim_host(card->func);
timeout = jiffies + HZ;
while (1) {
status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
if (ret)
goto release;
if (status & IF_SDIO_IO_RDY)
break;
if (time_after(jiffies, timeout)) {
ret = -ETIMEDOUT;
goto release;
}
mdelay(1);
}
ret = sdio_writesb(card->func, card->ioport,
packet->buffer, packet->nb);
if (ret)
goto release;
release:
sdio_release_host(card->func);
kfree(packet);
}
lbs_deb_leave(LBS_DEB_SDIO);
}
/********************************************************************/
/* Firmware */
/********************************************************************/
static int if_sdio_prog_helper(struct if_sdio_card *card)
{
int ret;
u8 status;
const struct firmware *fw;
unsigned long timeout;
u8 *chunk_buffer;
u32 chunk_size;
u8 *firmware;
size_t size;
lbs_deb_enter(LBS_DEB_SDIO);
ret = request_firmware(&fw, card->helper, &card->func->dev);
if (ret) {
lbs_pr_err("can't load helper firmware\n");
goto out;
}
chunk_buffer = kzalloc(64, GFP_KERNEL);
if (!chunk_buffer) {
ret = -ENOMEM;
goto release_fw;
}
sdio_claim_host(card->func);
ret = sdio_set_block_size(card->func, 32);
if (ret)
goto release;
firmware = fw->data;
size = fw->size;
while (size) {
timeout = jiffies + HZ;
while (1) {
status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
if (ret)
goto release;
if ((status & IF_SDIO_IO_RDY) &&
(status & IF_SDIO_DL_RDY))
break;
if (time_after(jiffies, timeout)) {
ret = -ETIMEDOUT;
goto release;
}
mdelay(1);
}
chunk_size = min(size, (size_t)60);
*((u32*)chunk_buffer) = cpu_to_le32(chunk_size);
memcpy(chunk_buffer + 4, firmware, chunk_size);
/*
lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
*/
ret = sdio_writesb(card->func, card->ioport,
chunk_buffer, 64);
if (ret)
goto release;
firmware += chunk_size;
size -= chunk_size;
}
/* an empty block marks the end of the transfer */
memset(chunk_buffer, 0, 4);
ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
if (ret)
goto release;
lbs_deb_sdio("waiting for helper to boot...\n");
/* wait for the helper to boot by looking at the size register */
timeout = jiffies + HZ;
while (1) {
u16 req_size;
req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
if (ret)
goto release;
req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
if (ret)
goto release;
if (req_size != 0)
break;
if (time_after(jiffies, timeout)) {
ret = -ETIMEDOUT;
goto release;
}
msleep(10);
}
ret = 0;
release:
sdio_set_block_size(card->func, 0);
sdio_release_host(card->func);
kfree(chunk_buffer);
release_fw:
release_firmware(fw);
out:
if (ret)
lbs_pr_err("failed to load helper firmware\n");
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
static int if_sdio_prog_real(struct if_sdio_card *card)
{
int ret;
u8 status;
const struct firmware *fw;
unsigned long timeout;
u8 *chunk_buffer;
u32 chunk_size;
u8 *firmware;
size_t size, req_size;
lbs_deb_enter(LBS_DEB_SDIO);
ret = request_firmware(&fw, card->firmware, &card->func->dev);
if (ret) {
lbs_pr_err("can't load firmware\n");
goto out;
}
chunk_buffer = kzalloc(512, GFP_KERNEL);
if (!chunk_buffer) {
ret = -ENOMEM;
goto release_fw;
}
sdio_claim_host(card->func);
ret = sdio_set_block_size(card->func, 32);
if (ret)
goto release;
firmware = fw->data;
size = fw->size;
while (size) {
timeout = jiffies + HZ;
while (1) {
status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
if (ret)
goto release;
if ((status & IF_SDIO_IO_RDY) &&
(status & IF_SDIO_DL_RDY))
break;
if (time_after(jiffies, timeout)) {
ret = -ETIMEDOUT;
goto release;
}
mdelay(1);
}
req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
if (ret)
goto release;
req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
if (ret)
goto release;
/*
lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
*/
if (req_size == 0) {
lbs_deb_sdio("firmware helper gave up early\n");
ret = -EIO;
goto release;
}
if (req_size & 0x01) {
lbs_deb_sdio("firmware helper signalled error\n");
ret = -EIO;
goto release;
}
if (req_size > size)
req_size = size;
while (req_size) {
chunk_size = min(req_size, (size_t)512);
memcpy(chunk_buffer, firmware, chunk_size);
/*
lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
chunk_size, (chunk_size + 31) / 32 * 32);
*/
ret = sdio_writesb(card->func, card->ioport,
chunk_buffer, (chunk_size + 31) / 32 * 32);
if (ret)
goto release;
firmware += chunk_size;
size -= chunk_size;
req_size -= chunk_size;
}
}
ret = 0;
lbs_deb_sdio("waiting for firmware to boot...\n");
/* wait for the firmware to boot */
timeout = jiffies + HZ;
while (1) {
u16 scratch;
scratch = if_sdio_read_scratch(card, &ret);
if (ret)
goto release;
if (scratch == IF_SDIO_FIRMWARE_OK)
break;
if (time_after(jiffies, timeout)) {
ret = -ETIMEDOUT;
goto release;
}
msleep(10);
}
ret = 0;
release:
sdio_set_block_size(card->func, 0);
sdio_release_host(card->func);
kfree(chunk_buffer);
release_fw:
release_firmware(fw);
out:
if (ret)
lbs_pr_err("failed to load firmware\n");
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
static int if_sdio_prog_firmware(struct if_sdio_card *card)
{
int ret;
u16 scratch;
lbs_deb_enter(LBS_DEB_SDIO);
sdio_claim_host(card->func);
scratch = if_sdio_read_scratch(card, &ret);
sdio_release_host(card->func);
if (ret)
goto out;
if (scratch == IF_SDIO_FIRMWARE_OK) {
lbs_deb_sdio("firmware already loaded\n");
goto success;
}
ret = if_sdio_prog_helper(card);
if (ret)
goto out;
ret = if_sdio_prog_real(card);
if (ret)
goto out;
success:
ret = 0;
out:
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
/*******************************************************************/
/* Libertas callbacks */
/*******************************************************************/
static int if_sdio_host_to_card(wlan_private *priv, u8 type, u8 *buf, u16 nb)
{
int ret;
struct if_sdio_card *card;
struct if_sdio_packet *packet, *cur;
u16 size;
unsigned long flags;
lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
card = priv->card;
if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
ret = -EINVAL;
goto out;
}
/*
* The transfer must be in one transaction or the firmware
* goes suicidal.
*/
size = nb + 4;
if ((size > card->func->cur_blksize) || (size > 512)) {
size = (size + card->func->cur_blksize - 1) /
card->func->cur_blksize * card->func->cur_blksize;
}
packet = kzalloc(sizeof(struct if_sdio_packet) + size,
GFP_ATOMIC);
if (!packet) {
ret = -ENOMEM;
goto out;
}
packet->next = NULL;
packet->nb = size;
/*
* SDIO specific header.
*/
packet->buffer[0] = (nb + 4) & 0xff;
packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
packet->buffer[2] = type;
packet->buffer[3] = 0;
memcpy(packet->buffer + 4, buf, nb);
spin_lock_irqsave(&card->lock, flags);
if (!card->packets)
card->packets = packet;
else {
cur = card->packets;
while (cur->next)
cur = cur->next;
cur->next = packet;
}
switch (type) {
case MVMS_CMD:
priv->dnld_sent = DNLD_CMD_SENT;
break;
case MVMS_DAT:
priv->dnld_sent = DNLD_DATA_SENT;
break;
default:
lbs_deb_sdio("unknown packet type %d\n", (int)type);
}
spin_unlock_irqrestore(&card->lock, flags);
schedule_work(&card->packet_worker);
ret = 0;
out:
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
static int if_sdio_get_int_status(wlan_private *priv, u8 *ireg)
{
struct if_sdio_card *card;
lbs_deb_enter(LBS_DEB_SDIO);
card = priv->card;
*ireg = card->int_cause;
card->int_cause = 0;
lbs_deb_leave(LBS_DEB_SDIO);
return 0;
}
static int if_sdio_read_event_cause(wlan_private *priv)
{
struct if_sdio_card *card;
lbs_deb_enter(LBS_DEB_SDIO);
card = priv->card;
priv->adapter->eventcause = card->event;
lbs_deb_leave(LBS_DEB_SDIO);
return 0;
}
/*******************************************************************/
/* SDIO callbacks */
/*******************************************************************/
static void if_sdio_interrupt(struct sdio_func *func)
{
int ret;
struct if_sdio_card *card;
u8 cause;
lbs_deb_enter(LBS_DEB_SDIO);
card = sdio_get_drvdata(func);
cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
if (ret)
goto out;
lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
if (ret)
goto out;
/*
* Ignore the define name, this really means the card has
* successfully received the command.
*/
if (cause & IF_SDIO_H_INT_DNLD) {
if ((card->priv->dnld_sent == DNLD_DATA_SENT) &&
(card->priv->adapter->connect_status == LIBERTAS_CONNECTED))
netif_wake_queue(card->priv->dev);
card->priv->dnld_sent = DNLD_RES_RECEIVED;
}
if (cause & IF_SDIO_H_INT_UPLD) {
ret = if_sdio_card_to_host(card);
if (ret)
goto out;
}
ret = 0;
out:
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
}
static int if_sdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
struct if_sdio_card *card;
wlan_private *priv;
int ret, i;
unsigned int model;
struct if_sdio_packet *packet;
lbs_deb_enter(LBS_DEB_SDIO);
for (i = 0;i < func->card->num_info;i++) {
if (sscanf(func->card->info[i],
"802.11 SDIO ID: %x", &model) == 1)
break;
if (sscanf(func->card->info[i],
"ID: %x", &model) == 1)
break;
}
if (i == func->card->num_info) {
lbs_pr_err("unable to identify card model\n");
return -ENODEV;
}
card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
if (!card)
return -ENOMEM;
card->func = func;
card->model = model;
spin_lock_init(&card->lock);
INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
if (card->model == if_sdio_models[i].model)
break;
}
if (i == ARRAY_SIZE(if_sdio_models)) {
lbs_pr_err("unkown card model 0x%x\n", card->model);
ret = -ENODEV;
goto free;
}
card->helper = if_sdio_models[i].helper;
card->firmware = if_sdio_models[i].firmware;
if (libertas_helper_name) {
lbs_deb_sdio("overriding helper firmware: %s\n",
libertas_helper_name);
card->helper = libertas_helper_name;
}
if (libertas_fw_name) {
lbs_deb_sdio("overriding firmware: %s\n", libertas_fw_name);
card->firmware = libertas_fw_name;
}
sdio_claim_host(func);
ret = sdio_enable_func(func);
if (ret)
goto release;
ret = sdio_claim_irq(func, if_sdio_interrupt);
if (ret)
goto disable;
card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
if (ret)
goto release_int;
card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
if (ret)
goto release_int;
card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
if (ret)
goto release_int;
sdio_release_host(func);
sdio_set_drvdata(func, card);
lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
"device = 0x%X, model = 0x%X, ioport = 0x%X\n",
func->class, func->vendor, func->device,
model, (unsigned)card->ioport);
ret = if_sdio_prog_firmware(card);
if (ret)
goto reclaim;
priv = libertas_add_card(card, &func->dev);
if (!priv) {
ret = -ENOMEM;
goto reclaim;
}
card->priv = priv;
priv->card = card;
priv->hw_host_to_card = if_sdio_host_to_card;
priv->hw_get_int_status = if_sdio_get_int_status;
priv->hw_read_event_cause = if_sdio_read_event_cause;
priv->adapter->fw_ready = 1;
/*
* Enable interrupts now that everything is set up
*/
sdio_claim_host(func);
sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
sdio_release_host(func);
if (ret)
goto reclaim;
ret = libertas_start_card(priv);
if (ret)
goto err_activate_card;
out:
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
err_activate_card:
flush_scheduled_work();
free_netdev(priv->dev);
kfree(priv->adapter);
reclaim:
sdio_claim_host(func);
release_int:
sdio_release_irq(func);
disable:
sdio_disable_func(func);
release:
sdio_release_host(func);
free:
while (card->packets) {
packet = card->packets;
card->packets = card->packets->next;
kfree(packet);
}
kfree(card);
goto out;
}
static void if_sdio_remove(struct sdio_func *func)
{
struct if_sdio_card *card;
struct if_sdio_packet *packet;
lbs_deb_enter(LBS_DEB_SDIO);
card = sdio_get_drvdata(func);
card->priv->adapter->surpriseremoved = 1;
lbs_deb_sdio("call remove card\n");
libertas_stop_card(card->priv);
libertas_remove_card(card->priv);
flush_scheduled_work();
sdio_claim_host(func);
sdio_release_irq(func);
sdio_disable_func(func);
sdio_release_host(func);
while (card->packets) {
packet = card->packets;
card->packets = card->packets->next;
kfree(packet);
}
kfree(card);
lbs_deb_leave(LBS_DEB_SDIO);
}
static struct sdio_driver if_sdio_driver = {
.name = "libertas_sdio",
.id_table = if_sdio_ids,
.probe = if_sdio_probe,
.remove = if_sdio_remove,
};
/*******************************************************************/
/* Module functions */
/*******************************************************************/
static int if_sdio_init_module(void)
{
int ret = 0;
lbs_deb_enter(LBS_DEB_SDIO);
printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
ret = sdio_register_driver(&if_sdio_driver);
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
return ret;
}
static void if_sdio_exit_module(void)
{
lbs_deb_enter(LBS_DEB_SDIO);
sdio_unregister_driver(&if_sdio_driver);
lbs_deb_leave(LBS_DEB_SDIO);
}
module_init(if_sdio_init_module);
module_exit(if_sdio_exit_module);
MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
MODULE_AUTHOR("Pierre Ossman");
MODULE_LICENSE("GPL");
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