2 * Copyright (c) 2010 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 /* identify firmware images */
20 #define FIRMWARE_AR7010 "ar7010.fw"
21 #define FIRMWARE_AR7010_1_1 "ar7010_1_1.fw"
22 #define FIRMWARE_AR9271 "ar9271.fw"
24 MODULE_FIRMWARE(FIRMWARE_AR7010);
25 MODULE_FIRMWARE(FIRMWARE_AR7010_1_1);
26 MODULE_FIRMWARE(FIRMWARE_AR9271);
28 static struct usb_device_id ath9k_hif_usb_ids[] = {
29 { USB_DEVICE(0x0cf3, 0x9271) }, /* Atheros */
30 { USB_DEVICE(0x0cf3, 0x1006) }, /* Atheros */
31 { USB_DEVICE(0x0cf3, 0x7010) }, /* Atheros */
32 { USB_DEVICE(0x0cf3, 0x7015) }, /* Atheros */
33 { USB_DEVICE(0x0846, 0x9030) }, /* Netgear N150 */
34 { USB_DEVICE(0x0846, 0x9018) }, /* Netgear WNDA3200 */
35 { USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
36 { USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
37 { USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
38 { USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
39 { USB_DEVICE(0x083A, 0xA704) }, /* SMC Networks */
43 MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
45 static int __hif_usb_tx(struct hif_device_usb *hif_dev);
47 static void hif_usb_regout_cb(struct urb *urb)
49 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
51 switch (urb->status) {
64 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
75 static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
82 urb = usb_alloc_urb(0, GFP_KERNEL);
86 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
93 cmd->hif_dev = hif_dev;
95 usb_fill_int_urb(urb, hif_dev->udev,
96 usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
98 hif_usb_regout_cb, cmd, 1);
100 usb_anchor_urb(urb, &hif_dev->regout_submitted);
101 ret = usb_submit_urb(urb, GFP_KERNEL);
103 usb_unanchor_urb(urb);
111 static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
112 struct sk_buff_head *list)
116 while ((skb = __skb_dequeue(list)) != NULL) {
117 dev_kfree_skb_any(skb);
118 TX_STAT_INC(skb_dropped);
122 static void hif_usb_tx_cb(struct urb *urb)
124 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
125 struct hif_device_usb *hif_dev;
128 if (!tx_buf || !tx_buf->hif_dev)
131 hif_dev = tx_buf->hif_dev;
133 switch (urb->status) {
141 * The URB has been killed, free the SKBs
144 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
150 /* Check if TX has been stopped */
151 spin_lock(&hif_dev->tx.tx_lock);
152 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
153 spin_unlock(&hif_dev->tx.tx_lock);
154 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
157 spin_unlock(&hif_dev->tx.tx_lock);
159 /* Complete the queued SKBs. */
160 while ((skb = __skb_dequeue(&tx_buf->skb_queue)) != NULL) {
161 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
163 TX_STAT_INC(skb_completed);
167 /* Re-initialize the SKB queue */
168 tx_buf->len = tx_buf->offset = 0;
169 __skb_queue_head_init(&tx_buf->skb_queue);
171 /* Add this TX buffer to the free list */
172 spin_lock(&hif_dev->tx.tx_lock);
173 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
174 hif_dev->tx.tx_buf_cnt++;
175 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
176 __hif_usb_tx(hif_dev); /* Check for pending SKBs */
177 TX_STAT_INC(buf_completed);
178 spin_unlock(&hif_dev->tx.tx_lock);
181 /* TX lock has to be taken */
182 static int __hif_usb_tx(struct hif_device_usb *hif_dev)
184 struct tx_buf *tx_buf = NULL;
185 struct sk_buff *nskb = NULL;
187 u16 *hdr, tx_skb_cnt = 0;
190 if (hif_dev->tx.tx_skb_cnt == 0)
193 /* Check if a free TX buffer is available */
194 if (list_empty(&hif_dev->tx.tx_buf))
197 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
198 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
199 hif_dev->tx.tx_buf_cnt--;
201 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
203 for (i = 0; i < tx_skb_cnt; i++) {
204 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
206 /* Should never be NULL */
209 hif_dev->tx.tx_skb_cnt--;
212 buf += tx_buf->offset;
215 *hdr++ = ATH_USB_TX_STREAM_MODE_TAG;
217 memcpy(buf, nskb->data, nskb->len);
218 tx_buf->len = nskb->len + 4;
220 if (i < (tx_skb_cnt - 1))
221 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
223 if (i == (tx_skb_cnt - 1))
224 tx_buf->len += tx_buf->offset;
226 __skb_queue_tail(&tx_buf->skb_queue, nskb);
227 TX_STAT_INC(skb_queued);
230 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
231 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
232 tx_buf->buf, tx_buf->len,
233 hif_usb_tx_cb, tx_buf);
235 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
237 tx_buf->len = tx_buf->offset = 0;
238 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
239 __skb_queue_head_init(&tx_buf->skb_queue);
240 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
241 hif_dev->tx.tx_buf_cnt++;
245 TX_STAT_INC(buf_queued);
250 static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb,
251 struct ath9k_htc_tx_ctl *tx_ctl)
255 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
257 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
258 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
262 /* Check if the max queue count has been reached */
263 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
264 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
268 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
269 hif_dev->tx.tx_skb_cnt++;
271 /* Send normal frames immediately */
272 if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL)))
273 __hif_usb_tx(hif_dev);
275 /* Check if AMPDUs have to be sent immediately */
276 if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) &&
277 (hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
278 (hif_dev->tx.tx_skb_cnt < 2)) {
279 __hif_usb_tx(hif_dev);
282 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
287 static void hif_usb_start(void *hif_handle, u8 pipe_id)
289 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
292 hif_dev->flags |= HIF_USB_START;
294 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
295 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
296 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
299 static void hif_usb_stop(void *hif_handle, u8 pipe_id)
301 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
304 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
305 ath9k_skb_queue_purge(hif_dev, &hif_dev->tx.tx_skb_queue);
306 hif_dev->tx.tx_skb_cnt = 0;
307 hif_dev->tx.flags |= HIF_USB_TX_STOP;
308 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
311 static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb,
312 struct ath9k_htc_tx_ctl *tx_ctl)
314 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
318 case USB_WLAN_TX_PIPE:
319 ret = hif_usb_send_tx(hif_dev, skb, tx_ctl);
321 case USB_REG_OUT_PIPE:
322 ret = hif_usb_send_regout(hif_dev, skb);
325 dev_err(&hif_dev->udev->dev,
326 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
334 static struct ath9k_htc_hif hif_usb = {
335 .transport = ATH9K_HIF_USB,
336 .name = "ath9k_hif_usb",
338 .control_ul_pipe = USB_REG_OUT_PIPE,
339 .control_dl_pipe = USB_REG_IN_PIPE,
341 .start = hif_usb_start,
342 .stop = hif_usb_stop,
343 .send = hif_usb_send,
346 static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
349 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
350 int index = 0, i = 0, chk_idx, len = skb->len;
351 int rx_remain_len = 0, rx_pkt_len = 0;
352 u16 pkt_len, pkt_tag, pool_index = 0;
355 spin_lock(&hif_dev->rx_lock);
357 rx_remain_len = hif_dev->rx_remain_len;
358 rx_pkt_len = hif_dev->rx_transfer_len;
360 if (rx_remain_len != 0) {
361 struct sk_buff *remain_skb = hif_dev->remain_skb;
364 ptr = (u8 *) remain_skb->data;
366 index = rx_remain_len;
367 rx_remain_len -= hif_dev->rx_pad_len;
370 memcpy(ptr, skb->data, rx_remain_len);
372 rx_pkt_len += rx_remain_len;
373 hif_dev->rx_remain_len = 0;
374 skb_put(remain_skb, rx_pkt_len);
376 skb_pool[pool_index++] = remain_skb;
379 index = rx_remain_len;
383 spin_unlock(&hif_dev->rx_lock);
385 while (index < len) {
386 ptr = (u8 *) skb->data;
388 pkt_len = ptr[index] + (ptr[index+1] << 8);
389 pkt_tag = ptr[index+2] + (ptr[index+3] << 8);
391 if (pkt_tag == ATH_USB_RX_STREAM_MODE_TAG) {
394 pad_len = 4 - (pkt_len & 0x3);
399 index = index + 4 + pkt_len + pad_len;
401 if (index > MAX_RX_BUF_SIZE) {
402 spin_lock(&hif_dev->rx_lock);
403 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
404 hif_dev->rx_transfer_len =
405 MAX_RX_BUF_SIZE - chk_idx - 4;
406 hif_dev->rx_pad_len = pad_len;
408 nskb = __dev_alloc_skb(pkt_len + 32,
411 dev_err(&hif_dev->udev->dev,
412 "ath9k_htc: RX memory allocation"
414 spin_unlock(&hif_dev->rx_lock);
417 skb_reserve(nskb, 32);
418 RX_STAT_INC(skb_allocated);
420 memcpy(nskb->data, &(skb->data[chk_idx+4]),
421 hif_dev->rx_transfer_len);
423 /* Record the buffer pointer */
424 hif_dev->remain_skb = nskb;
425 spin_unlock(&hif_dev->rx_lock);
427 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
429 dev_err(&hif_dev->udev->dev,
430 "ath9k_htc: RX memory allocation"
434 skb_reserve(nskb, 32);
435 RX_STAT_INC(skb_allocated);
437 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
438 skb_put(nskb, pkt_len);
439 skb_pool[pool_index++] = nskb;
442 RX_STAT_INC(skb_dropped);
448 for (i = 0; i < pool_index; i++) {
449 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
450 skb_pool[i]->len, USB_WLAN_RX_PIPE);
451 RX_STAT_INC(skb_completed);
455 static void ath9k_hif_usb_rx_cb(struct urb *urb)
457 struct sk_buff *skb = (struct sk_buff *) urb->context;
458 struct hif_device_usb *hif_dev = (struct hif_device_usb *)
459 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
468 switch (urb->status) {
480 if (likely(urb->actual_length != 0)) {
481 skb_put(skb, urb->actual_length);
482 ath9k_hif_usb_rx_stream(hif_dev, skb);
486 skb_reset_tail_pointer(skb);
489 usb_anchor_urb(urb, &hif_dev->rx_submitted);
490 ret = usb_submit_urb(urb, GFP_ATOMIC);
492 usb_unanchor_urb(urb);
501 static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
503 struct sk_buff *skb = (struct sk_buff *) urb->context;
504 struct sk_buff *nskb;
505 struct hif_device_usb *hif_dev = (struct hif_device_usb *)
506 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
515 switch (urb->status) {
527 if (likely(urb->actual_length != 0)) {
528 skb_put(skb, urb->actual_length);
530 /* Process the command first */
531 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
532 skb->len, USB_REG_IN_PIPE);
535 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
537 dev_err(&hif_dev->udev->dev,
538 "ath9k_htc: REG_IN memory allocation failure\n");
543 usb_fill_int_urb(urb, hif_dev->udev,
544 usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
545 nskb->data, MAX_REG_IN_BUF_SIZE,
546 ath9k_hif_usb_reg_in_cb, nskb, 1);
548 ret = usb_submit_urb(urb, GFP_ATOMIC);
558 skb_reset_tail_pointer(skb);
561 ret = usb_submit_urb(urb, GFP_ATOMIC);
571 static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
573 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
575 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
576 &hif_dev->tx.tx_buf, list) {
577 usb_kill_urb(tx_buf->urb);
578 list_del(&tx_buf->list);
579 usb_free_urb(tx_buf->urb);
584 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
585 &hif_dev->tx.tx_pending, list) {
586 usb_kill_urb(tx_buf->urb);
587 list_del(&tx_buf->list);
588 usb_free_urb(tx_buf->urb);
594 static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
596 struct tx_buf *tx_buf;
599 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
600 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
601 spin_lock_init(&hif_dev->tx.tx_lock);
602 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
604 for (i = 0; i < MAX_TX_URB_NUM; i++) {
605 tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
609 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
613 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
617 tx_buf->hif_dev = hif_dev;
618 __skb_queue_head_init(&tx_buf->skb_queue);
620 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
623 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
631 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
635 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
637 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
640 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
642 struct urb *urb = NULL;
643 struct sk_buff *skb = NULL;
646 init_usb_anchor(&hif_dev->rx_submitted);
647 spin_lock_init(&hif_dev->rx_lock);
649 for (i = 0; i < MAX_RX_URB_NUM; i++) {
652 urb = usb_alloc_urb(0, GFP_KERNEL);
658 /* Allocate buffer */
659 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
665 usb_fill_bulk_urb(urb, hif_dev->udev,
666 usb_rcvbulkpipe(hif_dev->udev,
668 skb->data, MAX_RX_BUF_SIZE,
669 ath9k_hif_usb_rx_cb, skb);
672 usb_anchor_urb(urb, &hif_dev->rx_submitted);
675 ret = usb_submit_urb(urb, GFP_KERNEL);
677 usb_unanchor_urb(urb);
682 * Drop reference count.
683 * This ensures that the URB is freed when killing them.
695 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
699 static void ath9k_hif_usb_dealloc_reg_in_urb(struct hif_device_usb *hif_dev)
701 if (hif_dev->reg_in_urb) {
702 usb_kill_urb(hif_dev->reg_in_urb);
703 if (hif_dev->reg_in_urb->context)
704 kfree_skb((void *)hif_dev->reg_in_urb->context);
705 usb_free_urb(hif_dev->reg_in_urb);
706 hif_dev->reg_in_urb = NULL;
710 static int ath9k_hif_usb_alloc_reg_in_urb(struct hif_device_usb *hif_dev)
714 hif_dev->reg_in_urb = usb_alloc_urb(0, GFP_KERNEL);
715 if (hif_dev->reg_in_urb == NULL)
718 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
722 usb_fill_int_urb(hif_dev->reg_in_urb, hif_dev->udev,
723 usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
724 skb->data, MAX_REG_IN_BUF_SIZE,
725 ath9k_hif_usb_reg_in_cb, skb, 1);
727 if (usb_submit_urb(hif_dev->reg_in_urb, GFP_KERNEL) != 0)
733 ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
737 static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
740 init_usb_anchor(&hif_dev->regout_submitted);
743 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
747 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
751 if (ath9k_hif_usb_alloc_reg_in_urb(hif_dev) < 0)
756 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
758 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
763 static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
765 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
766 ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
767 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
768 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
771 static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
774 const void *data = hif_dev->firmware->data;
775 size_t len = hif_dev->firmware->size;
776 u32 addr = AR9271_FIRMWARE;
777 u8 *buf = kzalloc(4096, GFP_KERNEL);
784 transfer = min_t(int, len, 4096);
785 memcpy(buf, data, transfer);
787 err = usb_control_msg(hif_dev->udev,
788 usb_sndctrlpipe(hif_dev->udev, 0),
789 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
790 addr >> 8, 0, buf, transfer, HZ);
802 if ((hif_dev->device_id == 0x7010) || (hif_dev->device_id == 0x7015))
803 firm_offset = AR7010_FIRMWARE_TEXT;
805 firm_offset = AR9271_FIRMWARE_TEXT;
808 * Issue FW download complete command to firmware.
810 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
811 FIRMWARE_DOWNLOAD_COMP,
813 firm_offset >> 8, 0, NULL, 0, HZ);
817 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
818 hif_dev->fw_name, (unsigned long) hif_dev->firmware->size);
823 static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev)
827 /* Request firmware */
828 ret = request_firmware(&hif_dev->firmware, hif_dev->fw_name,
829 &hif_dev->udev->dev);
831 dev_err(&hif_dev->udev->dev,
832 "ath9k_htc: Firmware - %s not found\n", hif_dev->fw_name);
837 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
839 dev_err(&hif_dev->udev->dev,
840 "ath9k_htc: Unable to allocate URBs\n");
844 /* Download firmware */
845 ret = ath9k_hif_usb_download_fw(hif_dev);
847 dev_err(&hif_dev->udev->dev,
848 "ath9k_htc: Firmware - %s download failed\n",
850 goto err_fw_download;
856 ath9k_hif_usb_dealloc_urbs(hif_dev);
858 release_firmware(hif_dev->firmware);
860 hif_dev->firmware = NULL;
864 static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
866 ath9k_hif_usb_dealloc_urbs(hif_dev);
867 if (hif_dev->firmware)
868 release_firmware(hif_dev->firmware);
871 static int ath9k_hif_usb_probe(struct usb_interface *interface,
872 const struct usb_device_id *id)
874 struct usb_device *udev = interface_to_usbdev(interface);
875 struct hif_device_usb *hif_dev;
878 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
885 hif_dev->udev = udev;
886 hif_dev->interface = interface;
887 hif_dev->device_id = id->idProduct;
889 udev->reset_resume = 1;
891 usb_set_intfdata(interface, hif_dev);
893 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
894 &hif_dev->udev->dev);
895 if (hif_dev->htc_handle == NULL) {
897 goto err_htc_hw_alloc;
900 /* Find out which firmware to load */
902 switch(hif_dev->device_id) {
906 if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x0202)
907 hif_dev->fw_name = FIRMWARE_AR7010_1_1;
909 hif_dev->fw_name = FIRMWARE_AR7010;
912 hif_dev->fw_name = FIRMWARE_AR9271;
916 ret = ath9k_hif_usb_dev_init(hif_dev);
919 goto err_hif_init_usb;
922 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
923 &hif_dev->udev->dev, hif_dev->device_id);
926 goto err_htc_hw_init;
929 dev_info(&hif_dev->udev->dev, "ath9k_htc: USB layer initialized\n");
934 ath9k_hif_usb_dev_deinit(hif_dev);
936 ath9k_htc_hw_free(hif_dev->htc_handle);
938 usb_set_intfdata(interface, NULL);
945 static void ath9k_hif_usb_reboot(struct usb_device *udev)
947 u32 reboot_cmd = 0xffffffff;
951 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
955 ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, USB_REG_OUT_PIPE),
958 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
963 static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
965 struct usb_device *udev = interface_to_usbdev(interface);
966 struct hif_device_usb *hif_dev =
967 (struct hif_device_usb *) usb_get_intfdata(interface);
970 ath9k_htc_hw_deinit(hif_dev->htc_handle,
971 (udev->state == USB_STATE_NOTATTACHED) ? true : false);
972 ath9k_htc_hw_free(hif_dev->htc_handle);
973 ath9k_hif_usb_dev_deinit(hif_dev);
974 usb_set_intfdata(interface, NULL);
977 if (hif_dev->flags & HIF_USB_START)
978 ath9k_hif_usb_reboot(udev);
981 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
986 static int ath9k_hif_usb_suspend(struct usb_interface *interface,
987 pm_message_t message)
989 struct hif_device_usb *hif_dev =
990 (struct hif_device_usb *) usb_get_intfdata(interface);
992 ath9k_hif_usb_dealloc_urbs(hif_dev);
997 static int ath9k_hif_usb_resume(struct usb_interface *interface)
999 struct hif_device_usb *hif_dev =
1000 (struct hif_device_usb *) usb_get_intfdata(interface);
1003 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1007 if (hif_dev->firmware) {
1008 ret = ath9k_hif_usb_download_fw(hif_dev);
1012 ath9k_hif_usb_dealloc_urbs(hif_dev);
1018 ret = ath9k_htc_resume(hif_dev->htc_handle);
1026 ath9k_hif_usb_dealloc_urbs(hif_dev);
1032 static struct usb_driver ath9k_hif_usb_driver = {
1033 .name = "ath9k_hif_usb",
1034 .probe = ath9k_hif_usb_probe,
1035 .disconnect = ath9k_hif_usb_disconnect,
1037 .suspend = ath9k_hif_usb_suspend,
1038 .resume = ath9k_hif_usb_resume,
1039 .reset_resume = ath9k_hif_usb_resume,
1041 .id_table = ath9k_hif_usb_ids,
1045 int ath9k_hif_usb_init(void)
1047 return usb_register(&ath9k_hif_usb_driver);
1050 void ath9k_hif_usb_exit(void)
1052 usb_deregister(&ath9k_hif_usb_driver);