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OpenCloudOS-Kernel/drivers/net/wireless/ath/ath9k/hif_usb.c

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23 KiB
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/*
* Copyright (c) 2010 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "htc.h"
/* identify firmware images */
#define FIRMWARE_AR7010 "ar7010.fw"
#define FIRMWARE_AR7010_1_1 "ar7010_1_1.fw"
#define FIRMWARE_AR9271 "ar9271.fw"
MODULE_FIRMWARE(FIRMWARE_AR7010);
MODULE_FIRMWARE(FIRMWARE_AR7010_1_1);
MODULE_FIRMWARE(FIRMWARE_AR9271);
static struct usb_device_id ath9k_hif_usb_ids[] = {
{ USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */
{ USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */
{ USB_DEVICE(0x0cf3, 0x7010) }, /* Atheros */
{ USB_DEVICE(0x0cf3, 0x7015) }, /* Atheros */
{ USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */
{ USB_DEVICE(0x0846, 0x9018) }, /* Netgear WNDA3200 */
{ USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
{ USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
{ USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
{ USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
{ USB_DEVICE(0x083A, 0xA704) }, /* SMC Networks */
{ },
};
MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
static int __hif_usb_tx(struct hif_device_usb *hif_dev);
static void hif_usb_regout_cb(struct urb *urb)
{
struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
switch (urb->status) {
case 0:
break;
case -ENOENT:
case -ECONNRESET:
case -ENODEV:
case -ESHUTDOWN:
goto free;
default:
break;
}
if (cmd) {
ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
cmd->skb, 1);
kfree(cmd);
}
return;
free:
kfree_skb(cmd->skb);
kfree(cmd);
}
static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
struct sk_buff *skb)
{
struct urb *urb;
struct cmd_buf *cmd;
int ret = 0;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (urb == NULL)
return -ENOMEM;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL) {
usb_free_urb(urb);
return -ENOMEM;
}
cmd->skb = skb;
cmd->hif_dev = hif_dev;
usb_fill_int_urb(urb, hif_dev->udev,
usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
skb->data, skb->len,
hif_usb_regout_cb, cmd, 1);
usb_anchor_urb(urb, &hif_dev->regout_submitted);
ret = usb_submit_urb(urb, GFP_KERNEL);
if (ret) {
usb_unanchor_urb(urb);
kfree(cmd);
}
usb_free_urb(urb);
return ret;
}
static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
struct sk_buff_head *list)
{
struct sk_buff *skb;
while ((skb = __skb_dequeue(list)) != NULL) {
dev_kfree_skb_any(skb);
TX_STAT_INC(skb_dropped);
}
}
static void hif_usb_tx_cb(struct urb *urb)
{
struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
struct hif_device_usb *hif_dev;
struct sk_buff *skb;
if (!tx_buf || !tx_buf->hif_dev)
return;
hif_dev = tx_buf->hif_dev;
switch (urb->status) {
case 0:
break;
case -ENOENT:
case -ECONNRESET:
case -ENODEV:
case -ESHUTDOWN:
/*
* The URB has been killed, free the SKBs
* and return.
*/
ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
return;
default:
break;
}
/* Check if TX has been stopped */
spin_lock(&hif_dev->tx.tx_lock);
if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
spin_unlock(&hif_dev->tx.tx_lock);
ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
goto add_free;
}
spin_unlock(&hif_dev->tx.tx_lock);
/* Complete the queued SKBs. */
while ((skb = __skb_dequeue(&tx_buf->skb_queue)) != NULL) {
ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
skb, 1);
TX_STAT_INC(skb_completed);
}
add_free:
/* Re-initialize the SKB queue */
tx_buf->len = tx_buf->offset = 0;
__skb_queue_head_init(&tx_buf->skb_queue);
/* Add this TX buffer to the free list */
spin_lock(&hif_dev->tx.tx_lock);
list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
hif_dev->tx.tx_buf_cnt++;
if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
__hif_usb_tx(hif_dev); /* Check for pending SKBs */
TX_STAT_INC(buf_completed);
spin_unlock(&hif_dev->tx.tx_lock);
}
/* TX lock has to be taken */
static int __hif_usb_tx(struct hif_device_usb *hif_dev)
{
struct tx_buf *tx_buf = NULL;
struct sk_buff *nskb = NULL;
int ret = 0, i;
u16 *hdr, tx_skb_cnt = 0;
u8 *buf;
if (hif_dev->tx.tx_skb_cnt == 0)
return 0;
/* Check if a free TX buffer is available */
if (list_empty(&hif_dev->tx.tx_buf))
return 0;
tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
hif_dev->tx.tx_buf_cnt--;
tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
for (i = 0; i < tx_skb_cnt; i++) {
nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
/* Should never be NULL */
BUG_ON(!nskb);
hif_dev->tx.tx_skb_cnt--;
buf = tx_buf->buf;
buf += tx_buf->offset;
hdr = (u16 *)buf;
*hdr++ = nskb->len;
*hdr++ = ATH_USB_TX_STREAM_MODE_TAG;
buf += 4;
memcpy(buf, nskb->data, nskb->len);
tx_buf->len = nskb->len + 4;
if (i < (tx_skb_cnt - 1))
tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
if (i == (tx_skb_cnt - 1))
tx_buf->len += tx_buf->offset;
__skb_queue_tail(&tx_buf->skb_queue, nskb);
TX_STAT_INC(skb_queued);
}
usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
tx_buf->buf, tx_buf->len,
hif_usb_tx_cb, tx_buf);
ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
if (ret) {
tx_buf->len = tx_buf->offset = 0;
ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
__skb_queue_head_init(&tx_buf->skb_queue);
list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
hif_dev->tx.tx_buf_cnt++;
}
if (!ret)
TX_STAT_INC(buf_queued);
return ret;
}
static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb,
struct ath9k_htc_tx_ctl *tx_ctl)
{
unsigned long flags;
spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
return -ENODEV;
}
/* Check if the max queue count has been reached */
if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
return -ENOMEM;
}
__skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
hif_dev->tx.tx_skb_cnt++;
/* Send normal frames immediately */
if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL)))
__hif_usb_tx(hif_dev);
/* Check if AMPDUs have to be sent immediately */
if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) &&
(hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
(hif_dev->tx.tx_skb_cnt < 2)) {
__hif_usb_tx(hif_dev);
}
spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
return 0;
}
static void hif_usb_start(void *hif_handle, u8 pipe_id)
{
struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
unsigned long flags;
hif_dev->flags |= HIF_USB_START;
spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
}
static void hif_usb_stop(void *hif_handle, u8 pipe_id)
{
struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
unsigned long flags;
spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
ath9k_skb_queue_purge(hif_dev, &hif_dev->tx.tx_skb_queue);
hif_dev->tx.tx_skb_cnt = 0;
hif_dev->tx.flags |= HIF_USB_TX_STOP;
spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
}
static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb,
struct ath9k_htc_tx_ctl *tx_ctl)
{
struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
int ret = 0;
switch (pipe_id) {
case USB_WLAN_TX_PIPE:
ret = hif_usb_send_tx(hif_dev, skb, tx_ctl);
break;
case USB_REG_OUT_PIPE:
ret = hif_usb_send_regout(hif_dev, skb);
break;
default:
dev_err(&hif_dev->udev->dev,
"ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
ret = -EINVAL;
break;
}
return ret;
}
static struct ath9k_htc_hif hif_usb = {
.transport = ATH9K_HIF_USB,
.name = "ath9k_hif_usb",
.control_ul_pipe = USB_REG_OUT_PIPE,
.control_dl_pipe = USB_REG_IN_PIPE,
.start = hif_usb_start,
.stop = hif_usb_stop,
.send = hif_usb_send,
};
static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
struct sk_buff *skb)
{
struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
int index = 0, i = 0, chk_idx, len = skb->len;
int rx_remain_len = 0, rx_pkt_len = 0;
u16 pkt_len, pkt_tag, pool_index = 0;
u8 *ptr;
spin_lock(&hif_dev->rx_lock);
rx_remain_len = hif_dev->rx_remain_len;
rx_pkt_len = hif_dev->rx_transfer_len;
if (rx_remain_len != 0) {
struct sk_buff *remain_skb = hif_dev->remain_skb;
if (remain_skb) {
ptr = (u8 *) remain_skb->data;
index = rx_remain_len;
rx_remain_len -= hif_dev->rx_pad_len;
ptr += rx_pkt_len;
memcpy(ptr, skb->data, rx_remain_len);
rx_pkt_len += rx_remain_len;
hif_dev->rx_remain_len = 0;
skb_put(remain_skb, rx_pkt_len);
skb_pool[pool_index++] = remain_skb;
} else {
index = rx_remain_len;
}
}
spin_unlock(&hif_dev->rx_lock);
while (index < len) {
ptr = (u8 *) skb->data;
pkt_len = ptr[index] + (ptr[index+1] << 8);
pkt_tag = ptr[index+2] + (ptr[index+3] << 8);
if (pkt_tag == ATH_USB_RX_STREAM_MODE_TAG) {
u16 pad_len;
pad_len = 4 - (pkt_len & 0x3);
if (pad_len == 4)
pad_len = 0;
chk_idx = index;
index = index + 4 + pkt_len + pad_len;
if (index > MAX_RX_BUF_SIZE) {
spin_lock(&hif_dev->rx_lock);
hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
hif_dev->rx_transfer_len =
MAX_RX_BUF_SIZE - chk_idx - 4;
hif_dev->rx_pad_len = pad_len;
nskb = __dev_alloc_skb(pkt_len + 32,
GFP_ATOMIC);
if (!nskb) {
dev_err(&hif_dev->udev->dev,
"ath9k_htc: RX memory allocation"
" error\n");
spin_unlock(&hif_dev->rx_lock);
goto err;
}
skb_reserve(nskb, 32);
RX_STAT_INC(skb_allocated);
memcpy(nskb->data, &(skb->data[chk_idx+4]),
hif_dev->rx_transfer_len);
/* Record the buffer pointer */
hif_dev->remain_skb = nskb;
spin_unlock(&hif_dev->rx_lock);
} else {
nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
if (!nskb) {
dev_err(&hif_dev->udev->dev,
"ath9k_htc: RX memory allocation"
" error\n");
goto err;
}
skb_reserve(nskb, 32);
RX_STAT_INC(skb_allocated);
memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
skb_put(nskb, pkt_len);
skb_pool[pool_index++] = nskb;
}
} else {
RX_STAT_INC(skb_dropped);
return;
}
}
err:
for (i = 0; i < pool_index; i++) {
ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
skb_pool[i]->len, USB_WLAN_RX_PIPE);
RX_STAT_INC(skb_completed);
}
}
static void ath9k_hif_usb_rx_cb(struct urb *urb)
{
struct sk_buff *skb = (struct sk_buff *) urb->context;
struct hif_device_usb *hif_dev = (struct hif_device_usb *)
usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
int ret;
if (!skb)
return;
if (!hif_dev)
goto free;
switch (urb->status) {
case 0:
break;
case -ENOENT:
case -ECONNRESET:
case -ENODEV:
case -ESHUTDOWN:
goto free;
default:
goto resubmit;
}
if (likely(urb->actual_length != 0)) {
skb_put(skb, urb->actual_length);
ath9k_hif_usb_rx_stream(hif_dev, skb);
}
resubmit:
skb_reset_tail_pointer(skb);
skb_trim(skb, 0);
usb_anchor_urb(urb, &hif_dev->rx_submitted);
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret) {
usb_unanchor_urb(urb);
goto free;
}
return;
free:
kfree_skb(skb);
}
static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
{
struct sk_buff *skb = (struct sk_buff *) urb->context;
struct sk_buff *nskb;
struct hif_device_usb *hif_dev = (struct hif_device_usb *)
usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
int ret;
if (!skb)
return;
if (!hif_dev)
goto free;
switch (urb->status) {
case 0:
break;
case -ENOENT:
case -ECONNRESET:
case -ENODEV:
case -ESHUTDOWN:
goto free;
default:
goto resubmit;
}
if (likely(urb->actual_length != 0)) {
skb_put(skb, urb->actual_length);
/* Process the command first */
ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
skb->len, USB_REG_IN_PIPE);
nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
if (!nskb) {
dev_err(&hif_dev->udev->dev,
"ath9k_htc: REG_IN memory allocation failure\n");
urb->context = NULL;
return;
}
usb_fill_int_urb(urb, hif_dev->udev,
usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
nskb->data, MAX_REG_IN_BUF_SIZE,
ath9k_hif_usb_reg_in_cb, nskb, 1);
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret) {
kfree_skb(nskb);
urb->context = NULL;
}
return;
}
resubmit:
skb_reset_tail_pointer(skb);
skb_trim(skb, 0);
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret)
goto free;
return;
free:
kfree_skb(skb);
urb->context = NULL;
}
static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
{
struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
list_for_each_entry_safe(tx_buf, tx_buf_tmp,
&hif_dev->tx.tx_buf, list) {
usb_kill_urb(tx_buf->urb);
list_del(&tx_buf->list);
usb_free_urb(tx_buf->urb);
kfree(tx_buf->buf);
kfree(tx_buf);
}
list_for_each_entry_safe(tx_buf, tx_buf_tmp,
&hif_dev->tx.tx_pending, list) {
usb_kill_urb(tx_buf->urb);
list_del(&tx_buf->list);
usb_free_urb(tx_buf->urb);
kfree(tx_buf->buf);
kfree(tx_buf);
}
}
static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
{
struct tx_buf *tx_buf;
int i;
INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
spin_lock_init(&hif_dev->tx.tx_lock);
__skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
for (i = 0; i < MAX_TX_URB_NUM; i++) {
tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
if (!tx_buf)
goto err;
tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
if (!tx_buf->buf)
goto err;
tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!tx_buf->urb)
goto err;
tx_buf->hif_dev = hif_dev;
__skb_queue_head_init(&tx_buf->skb_queue);
list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
}
hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
return 0;
err:
if (tx_buf) {
kfree(tx_buf->buf);
kfree(tx_buf);
}
ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
return -ENOMEM;
}
static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
{
usb_kill_anchored_urbs(&hif_dev->rx_submitted);
}
static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
{
struct urb *urb = NULL;
struct sk_buff *skb = NULL;
int i, ret;
init_usb_anchor(&hif_dev->rx_submitted);
spin_lock_init(&hif_dev->rx_lock);
for (i = 0; i < MAX_RX_URB_NUM; i++) {
/* Allocate URB */
urb = usb_alloc_urb(0, GFP_KERNEL);
if (urb == NULL) {
ret = -ENOMEM;
goto err_urb;
}
/* Allocate buffer */
skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
if (!skb) {
ret = -ENOMEM;
goto err_skb;
}
usb_fill_bulk_urb(urb, hif_dev->udev,
usb_rcvbulkpipe(hif_dev->udev,
USB_WLAN_RX_PIPE),
skb->data, MAX_RX_BUF_SIZE,
ath9k_hif_usb_rx_cb, skb);
/* Anchor URB */
usb_anchor_urb(urb, &hif_dev->rx_submitted);
/* Submit URB */
ret = usb_submit_urb(urb, GFP_KERNEL);
if (ret) {
usb_unanchor_urb(urb);
goto err_submit;
}
/*
* Drop reference count.
* This ensures that the URB is freed when killing them.
*/
usb_free_urb(urb);
}
return 0;
err_submit:
kfree_skb(skb);
err_skb:
usb_free_urb(urb);
err_urb:
ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
return ret;
}
static void ath9k_hif_usb_dealloc_reg_in_urb(struct hif_device_usb *hif_dev)
{
if (hif_dev->reg_in_urb) {
usb_kill_urb(hif_dev->reg_in_urb);
if (hif_dev->reg_in_urb->context)
kfree_skb((void *)hif_dev->reg_in_urb->context);
usb_free_urb(hif_dev->reg_in_urb);
hif_dev->reg_in_urb = NULL;
}
}
static int ath9k_hif_usb_alloc_reg_in_urb(struct hif_device_usb *hif_dev)
{
struct sk_buff *skb;
hif_dev->reg_in_urb = usb_alloc_urb(0, GFP_KERNEL);
if (hif_dev->reg_in_urb == NULL)
return -ENOMEM;
skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
if (!skb)
goto err;
usb_fill_int_urb(hif_dev->reg_in_urb, hif_dev->udev,
usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
skb->data, MAX_REG_IN_BUF_SIZE,
ath9k_hif_usb_reg_in_cb, skb, 1);
if (usb_submit_urb(hif_dev->reg_in_urb, GFP_KERNEL) != 0)
goto err;
return 0;
err:
ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
return -ENOMEM;
}
static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
{
/* Register Write */
init_usb_anchor(&hif_dev->regout_submitted);
/* TX */
if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
goto err;
/* RX */
if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
goto err_rx;
/* Register Read */
if (ath9k_hif_usb_alloc_reg_in_urb(hif_dev) < 0)
goto err_reg;
return 0;
err_reg:
ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
err_rx:
ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
err:
return -ENOMEM;
}
static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
{
usb_kill_anchored_urbs(&hif_dev->regout_submitted);
ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
}
static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
{
int transfer, err;
const void *data = hif_dev->firmware->data;
size_t len = hif_dev->firmware->size;
u32 addr = AR9271_FIRMWARE;
u8 *buf = kzalloc(4096, GFP_KERNEL);
u32 firm_offset;
if (!buf)
return -ENOMEM;
while (len) {
transfer = min_t(int, len, 4096);
memcpy(buf, data, transfer);
err = usb_control_msg(hif_dev->udev,
usb_sndctrlpipe(hif_dev->udev, 0),
FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
addr >> 8, 0, buf, transfer, HZ);
if (err < 0) {
kfree(buf);
return err;
}
len -= transfer;
data += transfer;
addr += transfer;
}
kfree(buf);
if ((hif_dev->device_id == 0x7010) || (hif_dev->device_id == 0x7015))
firm_offset = AR7010_FIRMWARE_TEXT;
else
firm_offset = AR9271_FIRMWARE_TEXT;
/*
* Issue FW download complete command to firmware.
*/
err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
FIRMWARE_DOWNLOAD_COMP,
0x40 | USB_DIR_OUT,
firm_offset >> 8, 0, NULL, 0, HZ);
if (err)
return -EIO;
dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
hif_dev->fw_name, (unsigned long) hif_dev->firmware->size);
return 0;
}
static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
{
int ret;
/* Request firmware */
ret = request_firmware(&hif_dev->firmware, hif_dev->fw_name,
&hif_dev->udev->dev);
if (ret) {
dev_err(&hif_dev->udev->dev,
"ath9k_htc: Firmware - %s not found\n", hif_dev->fw_name);
goto err_fw_req;
}
/* Alloc URBs */
ret = ath9k_hif_usb_alloc_urbs(hif_dev);
if (ret) {
dev_err(&hif_dev->udev->dev,
"ath9k_htc: Unable to allocate URBs\n");
goto err_urb;
}
/* Download firmware */
ret = ath9k_hif_usb_download_fw(hif_dev);
if (ret) {
dev_err(&hif_dev->udev->dev,
"ath9k_htc: Firmware - %s download failed\n",
hif_dev->fw_name);
goto err_fw_download;
}
return 0;
err_fw_download:
ath9k_hif_usb_dealloc_urbs(hif_dev);
err_urb:
release_firmware(hif_dev->firmware);
err_fw_req:
hif_dev->firmware = NULL;
return ret;
}
static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
{
ath9k_hif_usb_dealloc_urbs(hif_dev);
if (hif_dev->firmware)
release_firmware(hif_dev->firmware);
}
static int ath9k_hif_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct hif_device_usb *hif_dev;
int ret = 0;
hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
if (!hif_dev) {
ret = -ENOMEM;
goto err_alloc;
}
usb_get_dev(udev);
hif_dev->udev = udev;
hif_dev->interface = interface;
hif_dev->device_id = id->idProduct;
#ifdef CONFIG_PM
udev->reset_resume = 1;
#endif
usb_set_intfdata(interface, hif_dev);
hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
&hif_dev->udev->dev);
if (hif_dev->htc_handle == NULL) {
ret = -ENOMEM;
goto err_htc_hw_alloc;
}
/* Find out which firmware to load */
switch(hif_dev->device_id) {
case 0x7010:
case 0x7015:
case 0x9018:
if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x0202)
hif_dev->fw_name = FIRMWARE_AR7010_1_1;
else
hif_dev->fw_name = FIRMWARE_AR7010;
break;
default:
hif_dev->fw_name = FIRMWARE_AR9271;
break;
}
ret = ath9k_hif_usb_dev_init(hif_dev);
if (ret) {
ret = -EINVAL;
goto err_hif_init_usb;
}
ret = ath9k_htc_hw_init(hif_dev->htc_handle,
&hif_dev->udev->dev, hif_dev->device_id,
hif_dev->udev->product);
if (ret) {
ret = -EINVAL;
goto err_htc_hw_init;
}
dev_info(&hif_dev->udev->dev, "ath9k_htc: USB layer initialized\n");
return 0;
err_htc_hw_init:
ath9k_hif_usb_dev_deinit(hif_dev);
err_hif_init_usb:
ath9k_htc_hw_free(hif_dev->htc_handle);
err_htc_hw_alloc:
usb_set_intfdata(interface, NULL);
kfree(hif_dev);
usb_put_dev(udev);
err_alloc:
return ret;
}
static void ath9k_hif_usb_reboot(struct usb_device *udev)
{
u32 reboot_cmd = 0xffffffff;
void *buf;
int ret;
buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
if (!buf)
return;
ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, USB_REG_OUT_PIPE),
buf, 4, NULL, HZ);
if (ret)
dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
kfree(buf);
}
static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct hif_device_usb *hif_dev =
(struct hif_device_usb *) usb_get_intfdata(interface);
if (hif_dev) {
ath9k_htc_hw_deinit(hif_dev->htc_handle,
(udev->state == USB_STATE_NOTATTACHED) ? true : false);
ath9k_htc_hw_free(hif_dev->htc_handle);
ath9k_hif_usb_dev_deinit(hif_dev);
usb_set_intfdata(interface, NULL);
}
if (hif_dev->flags & HIF_USB_START)
ath9k_hif_usb_reboot(udev);
kfree(hif_dev);
dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
usb_put_dev(udev);
}
#ifdef CONFIG_PM
static int ath9k_hif_usb_suspend(struct usb_interface *interface,
pm_message_t message)
{
struct hif_device_usb *hif_dev =
(struct hif_device_usb *) usb_get_intfdata(interface);
ath9k_hif_usb_dealloc_urbs(hif_dev);
return 0;
}
static int ath9k_hif_usb_resume(struct usb_interface *interface)
{
struct hif_device_usb *hif_dev =
(struct hif_device_usb *) usb_get_intfdata(interface);
int ret;
ret = ath9k_hif_usb_alloc_urbs(hif_dev);
if (ret)
return ret;
if (hif_dev->firmware) {
ret = ath9k_hif_usb_download_fw(hif_dev);
if (ret)
goto fail_resume;
} else {
ath9k_hif_usb_dealloc_urbs(hif_dev);
return -EIO;
}
mdelay(100);
ret = ath9k_htc_resume(hif_dev->htc_handle);
if (ret)
goto fail_resume;
return 0;
fail_resume:
ath9k_hif_usb_dealloc_urbs(hif_dev);
return ret;
}
#endif
static struct usb_driver ath9k_hif_usb_driver = {
.name = "ath9k_hif_usb",
.probe = ath9k_hif_usb_probe,
.disconnect = ath9k_hif_usb_disconnect,
#ifdef CONFIG_PM
.suspend = ath9k_hif_usb_suspend,
.resume = ath9k_hif_usb_resume,
.reset_resume = ath9k_hif_usb_resume,
#endif
.id_table = ath9k_hif_usb_ids,
.soft_unbind = 1,
};
int ath9k_hif_usb_init(void)
{
return usb_register(&ath9k_hif_usb_driver);
}
void ath9k_hif_usb_exit(void)
{
usb_deregister(&ath9k_hif_usb_driver);
}
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