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(0x0846, 0x9030) }, /* Netgear N150 */
32 { USB_DEVICE(0x07D1, 0x3A10) }, /* Dlink Wireless 150 */
33 { USB_DEVICE(0x13D3, 0x3327) }, /* Azurewave */
34 { USB_DEVICE(0x13D3, 0x3328) }, /* Azurewave */
35 { USB_DEVICE(0x13D3, 0x3346) }, /* IMC Networks */
36 { USB_DEVICE(0x13D3, 0x3348) }, /* Azurewave */
37 { USB_DEVICE(0x13D3, 0x3349) }, /* Azurewave */
38 { USB_DEVICE(0x13D3, 0x3350) }, /* Azurewave */
39 { USB_DEVICE(0x04CA, 0x4605) }, /* Liteon */
40 { USB_DEVICE(0x040D, 0x3801) }, /* VIA */
41 { USB_DEVICE(0x0cf3, 0xb003) }, /* Ubiquiti WifiStation Ext */
43 { USB_DEVICE(0x0cf3, 0x7015),
44 .driver_info = AR9287_USB }, /* Atheros */
45 { USB_DEVICE(0x1668, 0x1200),
46 .driver_info = AR9287_USB }, /* Verizon */
48 { USB_DEVICE(0x0cf3, 0x7010),
49 .driver_info = AR9280_USB }, /* Atheros */
50 { USB_DEVICE(0x0846, 0x9018),
51 .driver_info = AR9280_USB }, /* Netgear WNDA3200 */
52 { USB_DEVICE(0x083A, 0xA704),
53 .driver_info = AR9280_USB }, /* SMC Networks */
55 { USB_DEVICE(0x0cf3, 0x20ff),
56 .driver_info = STORAGE_DEVICE },
61 MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
63 static int __hif_usb_tx(struct hif_device_usb *hif_dev);
65 static void hif_usb_regout_cb(struct urb *urb)
67 struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
69 switch (urb->status) {
82 ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
93 static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
100 urb = usb_alloc_urb(0, GFP_KERNEL);
104 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
111 cmd->hif_dev = hif_dev;
113 usb_fill_bulk_urb(urb, hif_dev->udev,
114 usb_sndbulkpipe(hif_dev->udev, USB_REG_OUT_PIPE),
116 hif_usb_regout_cb, cmd);
118 usb_anchor_urb(urb, &hif_dev->regout_submitted);
119 ret = usb_submit_urb(urb, GFP_KERNEL);
121 usb_unanchor_urb(urb);
129 static inline void ath9k_skb_queue_purge(struct hif_device_usb *hif_dev,
130 struct sk_buff_head *list)
134 while ((skb = __skb_dequeue(list)) != NULL) {
135 dev_kfree_skb_any(skb);
136 TX_STAT_INC(skb_dropped);
140 static void hif_usb_tx_cb(struct urb *urb)
142 struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
143 struct hif_device_usb *hif_dev;
146 if (!tx_buf || !tx_buf->hif_dev)
149 hif_dev = tx_buf->hif_dev;
151 switch (urb->status) {
159 * The URB has been killed, free the SKBs.
161 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
164 * If the URBs are being flushed, no need to add this
165 * URB to the free list.
167 spin_lock(&hif_dev->tx.tx_lock);
168 if (hif_dev->tx.flags & HIF_USB_TX_FLUSH) {
169 spin_unlock(&hif_dev->tx.tx_lock);
172 spin_unlock(&hif_dev->tx.tx_lock);
175 * In the stop() case, this URB has to be added to
184 * Check if TX has been stopped, this is needed because
185 * this CB could have been invoked just after the TX lock
186 * was released in hif_stop() and kill_urb() hasn't been
189 spin_lock(&hif_dev->tx.tx_lock);
190 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
191 spin_unlock(&hif_dev->tx.tx_lock);
192 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
195 spin_unlock(&hif_dev->tx.tx_lock);
197 /* Complete the queued SKBs. */
198 while ((skb = __skb_dequeue(&tx_buf->skb_queue)) != NULL) {
199 ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
201 TX_STAT_INC(skb_completed);
205 /* Re-initialize the SKB queue */
206 tx_buf->len = tx_buf->offset = 0;
207 __skb_queue_head_init(&tx_buf->skb_queue);
209 /* Add this TX buffer to the free list */
210 spin_lock(&hif_dev->tx.tx_lock);
211 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
212 hif_dev->tx.tx_buf_cnt++;
213 if (!(hif_dev->tx.flags & HIF_USB_TX_STOP))
214 __hif_usb_tx(hif_dev); /* Check for pending SKBs */
215 TX_STAT_INC(buf_completed);
216 spin_unlock(&hif_dev->tx.tx_lock);
219 /* TX lock has to be taken */
220 static int __hif_usb_tx(struct hif_device_usb *hif_dev)
222 struct tx_buf *tx_buf = NULL;
223 struct sk_buff *nskb = NULL;
225 u16 *hdr, tx_skb_cnt = 0;
228 if (hif_dev->tx.tx_skb_cnt == 0)
231 /* Check if a free TX buffer is available */
232 if (list_empty(&hif_dev->tx.tx_buf))
235 tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
236 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
237 hif_dev->tx.tx_buf_cnt--;
239 tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
241 for (i = 0; i < tx_skb_cnt; i++) {
242 nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
244 /* Should never be NULL */
247 hif_dev->tx.tx_skb_cnt--;
250 buf += tx_buf->offset;
253 *hdr++ = ATH_USB_TX_STREAM_MODE_TAG;
255 memcpy(buf, nskb->data, nskb->len);
256 tx_buf->len = nskb->len + 4;
258 if (i < (tx_skb_cnt - 1))
259 tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
261 if (i == (tx_skb_cnt - 1))
262 tx_buf->len += tx_buf->offset;
264 __skb_queue_tail(&tx_buf->skb_queue, nskb);
265 TX_STAT_INC(skb_queued);
268 usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
269 usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
270 tx_buf->buf, tx_buf->len,
271 hif_usb_tx_cb, tx_buf);
273 ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
275 tx_buf->len = tx_buf->offset = 0;
276 ath9k_skb_queue_purge(hif_dev, &tx_buf->skb_queue);
277 __skb_queue_head_init(&tx_buf->skb_queue);
278 list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
279 hif_dev->tx.tx_buf_cnt++;
283 TX_STAT_INC(buf_queued);
288 static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb,
289 struct ath9k_htc_tx_ctl *tx_ctl)
293 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
295 if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
296 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
300 /* Check if the max queue count has been reached */
301 if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
302 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
306 __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
307 hif_dev->tx.tx_skb_cnt++;
309 /* Send normal frames immediately */
310 if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL)))
311 __hif_usb_tx(hif_dev);
313 /* Check if AMPDUs have to be sent immediately */
314 if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) &&
315 (hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
316 (hif_dev->tx.tx_skb_cnt < 2)) {
317 __hif_usb_tx(hif_dev);
320 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
325 static void hif_usb_start(void *hif_handle, u8 pipe_id)
327 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
330 hif_dev->flags |= HIF_USB_START;
332 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
333 hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
334 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
337 static void hif_usb_stop(void *hif_handle, u8 pipe_id)
339 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
340 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
343 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
344 ath9k_skb_queue_purge(hif_dev, &hif_dev->tx.tx_skb_queue);
345 hif_dev->tx.tx_skb_cnt = 0;
346 hif_dev->tx.flags |= HIF_USB_TX_STOP;
347 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
349 /* The pending URBs have to be canceled. */
350 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
351 &hif_dev->tx.tx_pending, list) {
352 usb_kill_urb(tx_buf->urb);
356 static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb,
357 struct ath9k_htc_tx_ctl *tx_ctl)
359 struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
363 case USB_WLAN_TX_PIPE:
364 ret = hif_usb_send_tx(hif_dev, skb, tx_ctl);
366 case USB_REG_OUT_PIPE:
367 ret = hif_usb_send_regout(hif_dev, skb);
370 dev_err(&hif_dev->udev->dev,
371 "ath9k_htc: Invalid TX pipe: %d\n", pipe_id);
379 static struct ath9k_htc_hif hif_usb = {
380 .transport = ATH9K_HIF_USB,
381 .name = "ath9k_hif_usb",
383 .control_ul_pipe = USB_REG_OUT_PIPE,
384 .control_dl_pipe = USB_REG_IN_PIPE,
386 .start = hif_usb_start,
387 .stop = hif_usb_stop,
388 .send = hif_usb_send,
391 static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
394 struct sk_buff *nskb, *skb_pool[MAX_PKT_NUM_IN_TRANSFER];
395 int index = 0, i = 0, len = skb->len;
396 int rx_remain_len, rx_pkt_len;
400 spin_lock(&hif_dev->rx_lock);
402 rx_remain_len = hif_dev->rx_remain_len;
403 rx_pkt_len = hif_dev->rx_transfer_len;
405 if (rx_remain_len != 0) {
406 struct sk_buff *remain_skb = hif_dev->remain_skb;
409 ptr = (u8 *) remain_skb->data;
411 index = rx_remain_len;
412 rx_remain_len -= hif_dev->rx_pad_len;
415 memcpy(ptr, skb->data, rx_remain_len);
417 rx_pkt_len += rx_remain_len;
418 hif_dev->rx_remain_len = 0;
419 skb_put(remain_skb, rx_pkt_len);
421 skb_pool[pool_index++] = remain_skb;
424 index = rx_remain_len;
428 spin_unlock(&hif_dev->rx_lock);
430 while (index < len) {
436 ptr = (u8 *) skb->data;
438 pkt_len = ptr[index] + (ptr[index+1] << 8);
439 pkt_tag = ptr[index+2] + (ptr[index+3] << 8);
441 if (pkt_tag != ATH_USB_RX_STREAM_MODE_TAG) {
442 RX_STAT_INC(skb_dropped);
446 pad_len = 4 - (pkt_len & 0x3);
451 index = index + 4 + pkt_len + pad_len;
453 if (index > MAX_RX_BUF_SIZE) {
454 spin_lock(&hif_dev->rx_lock);
455 hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
456 hif_dev->rx_transfer_len =
457 MAX_RX_BUF_SIZE - chk_idx - 4;
458 hif_dev->rx_pad_len = pad_len;
460 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
462 dev_err(&hif_dev->udev->dev,
463 "ath9k_htc: RX memory allocation error\n");
464 spin_unlock(&hif_dev->rx_lock);
467 skb_reserve(nskb, 32);
468 RX_STAT_INC(skb_allocated);
470 memcpy(nskb->data, &(skb->data[chk_idx+4]),
471 hif_dev->rx_transfer_len);
473 /* Record the buffer pointer */
474 hif_dev->remain_skb = nskb;
475 spin_unlock(&hif_dev->rx_lock);
477 nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
479 dev_err(&hif_dev->udev->dev,
480 "ath9k_htc: RX memory allocation error\n");
483 skb_reserve(nskb, 32);
484 RX_STAT_INC(skb_allocated);
486 memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
487 skb_put(nskb, pkt_len);
488 skb_pool[pool_index++] = nskb;
493 for (i = 0; i < pool_index; i++) {
494 ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
495 skb_pool[i]->len, USB_WLAN_RX_PIPE);
496 RX_STAT_INC(skb_completed);
500 static void ath9k_hif_usb_rx_cb(struct urb *urb)
502 struct sk_buff *skb = (struct sk_buff *) urb->context;
503 struct hif_device_usb *hif_dev =
504 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
513 switch (urb->status) {
525 if (likely(urb->actual_length != 0)) {
526 skb_put(skb, urb->actual_length);
527 ath9k_hif_usb_rx_stream(hif_dev, skb);
531 skb_reset_tail_pointer(skb);
534 usb_anchor_urb(urb, &hif_dev->rx_submitted);
535 ret = usb_submit_urb(urb, GFP_ATOMIC);
537 usb_unanchor_urb(urb);
546 static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
548 struct sk_buff *skb = (struct sk_buff *) urb->context;
549 struct sk_buff *nskb;
550 struct hif_device_usb *hif_dev =
551 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
560 switch (urb->status) {
572 if (likely(urb->actual_length != 0)) {
573 skb_put(skb, urb->actual_length);
575 /* Process the command first */
576 ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
577 skb->len, USB_REG_IN_PIPE);
580 nskb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
582 dev_err(&hif_dev->udev->dev,
583 "ath9k_htc: REG_IN memory allocation failure\n");
588 usb_fill_bulk_urb(urb, hif_dev->udev,
589 usb_rcvbulkpipe(hif_dev->udev,
591 nskb->data, MAX_REG_IN_BUF_SIZE,
592 ath9k_hif_usb_reg_in_cb, nskb);
594 ret = usb_submit_urb(urb, GFP_ATOMIC);
604 skb_reset_tail_pointer(skb);
607 ret = usb_submit_urb(urb, GFP_ATOMIC);
617 static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
619 struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
622 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
623 &hif_dev->tx.tx_buf, list) {
624 usb_kill_urb(tx_buf->urb);
625 list_del(&tx_buf->list);
626 usb_free_urb(tx_buf->urb);
631 spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
632 hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
633 spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
635 list_for_each_entry_safe(tx_buf, tx_buf_tmp,
636 &hif_dev->tx.tx_pending, list) {
637 usb_kill_urb(tx_buf->urb);
638 list_del(&tx_buf->list);
639 usb_free_urb(tx_buf->urb);
645 static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
647 struct tx_buf *tx_buf;
650 INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
651 INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
652 spin_lock_init(&hif_dev->tx.tx_lock);
653 __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
655 for (i = 0; i < MAX_TX_URB_NUM; i++) {
656 tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
660 tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
664 tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
668 tx_buf->hif_dev = hif_dev;
669 __skb_queue_head_init(&tx_buf->skb_queue);
671 list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
674 hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
682 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
686 static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
688 usb_kill_anchored_urbs(&hif_dev->rx_submitted);
691 static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
693 struct urb *urb = NULL;
694 struct sk_buff *skb = NULL;
697 init_usb_anchor(&hif_dev->rx_submitted);
698 spin_lock_init(&hif_dev->rx_lock);
700 for (i = 0; i < MAX_RX_URB_NUM; i++) {
703 urb = usb_alloc_urb(0, GFP_KERNEL);
709 /* Allocate buffer */
710 skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
716 usb_fill_bulk_urb(urb, hif_dev->udev,
717 usb_rcvbulkpipe(hif_dev->udev,
719 skb->data, MAX_RX_BUF_SIZE,
720 ath9k_hif_usb_rx_cb, skb);
723 usb_anchor_urb(urb, &hif_dev->rx_submitted);
726 ret = usb_submit_urb(urb, GFP_KERNEL);
728 usb_unanchor_urb(urb);
733 * Drop reference count.
734 * This ensures that the URB is freed when killing them.
746 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
750 static void ath9k_hif_usb_dealloc_reg_in_urb(struct hif_device_usb *hif_dev)
752 if (hif_dev->reg_in_urb) {
753 usb_kill_urb(hif_dev->reg_in_urb);
754 if (hif_dev->reg_in_urb->context)
755 kfree_skb((void *)hif_dev->reg_in_urb->context);
756 usb_free_urb(hif_dev->reg_in_urb);
757 hif_dev->reg_in_urb = NULL;
761 static int ath9k_hif_usb_alloc_reg_in_urb(struct hif_device_usb *hif_dev)
765 hif_dev->reg_in_urb = usb_alloc_urb(0, GFP_KERNEL);
766 if (hif_dev->reg_in_urb == NULL)
769 skb = alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
773 usb_fill_bulk_urb(hif_dev->reg_in_urb, hif_dev->udev,
774 usb_rcvbulkpipe(hif_dev->udev,
776 skb->data, MAX_REG_IN_BUF_SIZE,
777 ath9k_hif_usb_reg_in_cb, skb);
779 if (usb_submit_urb(hif_dev->reg_in_urb, GFP_KERNEL) != 0)
785 ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
789 static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
792 init_usb_anchor(&hif_dev->regout_submitted);
795 if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
799 if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
803 if (ath9k_hif_usb_alloc_reg_in_urb(hif_dev) < 0)
808 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
810 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
815 static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
817 usb_kill_anchored_urbs(&hif_dev->regout_submitted);
818 ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
819 ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
820 ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
823 static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev,
827 const void *data = hif_dev->firmware->data;
828 size_t len = hif_dev->firmware->size;
829 u32 addr = AR9271_FIRMWARE;
830 u8 *buf = kzalloc(4096, GFP_KERNEL);
837 transfer = min_t(int, len, 4096);
838 memcpy(buf, data, transfer);
840 err = usb_control_msg(hif_dev->udev,
841 usb_sndctrlpipe(hif_dev->udev, 0),
842 FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
843 addr >> 8, 0, buf, transfer, HZ);
855 if (IS_AR7010_DEVICE(drv_info))
856 firm_offset = AR7010_FIRMWARE_TEXT;
858 firm_offset = AR9271_FIRMWARE_TEXT;
861 * Issue FW download complete command to firmware.
863 err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
864 FIRMWARE_DOWNLOAD_COMP,
866 firm_offset >> 8, 0, NULL, 0, HZ);
870 dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
871 hif_dev->fw_name, (unsigned long) hif_dev->firmware->size);
876 static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev, u32 drv_info)
879 struct usb_host_interface *alt = &hif_dev->interface->altsetting[0];
880 struct usb_endpoint_descriptor *endp;
882 /* Request firmware */
883 ret = request_firmware(&hif_dev->firmware, hif_dev->fw_name,
884 &hif_dev->udev->dev);
886 dev_err(&hif_dev->udev->dev,
887 "ath9k_htc: Firmware - %s not found\n", hif_dev->fw_name);
891 /* Download firmware */
892 ret = ath9k_hif_usb_download_fw(hif_dev, drv_info);
894 dev_err(&hif_dev->udev->dev,
895 "ath9k_htc: Firmware - %s download failed\n",
897 goto err_fw_download;
900 /* On downloading the firmware to the target, the USB descriptor of EP4
901 * is 'patched' to change the type of the endpoint to Bulk. This will
902 * bring down CPU usage during the scan period.
904 for (idx = 0; idx < alt->desc.bNumEndpoints; idx++) {
905 endp = &alt->endpoint[idx].desc;
906 if ((endp->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
907 == USB_ENDPOINT_XFER_INT) {
908 endp->bmAttributes &= ~USB_ENDPOINT_XFERTYPE_MASK;
909 endp->bmAttributes |= USB_ENDPOINT_XFER_BULK;
915 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
917 dev_err(&hif_dev->udev->dev,
918 "ath9k_htc: Unable to allocate URBs\n");
925 ath9k_hif_usb_dealloc_urbs(hif_dev);
927 release_firmware(hif_dev->firmware);
929 hif_dev->firmware = NULL;
933 static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
935 ath9k_hif_usb_dealloc_urbs(hif_dev);
936 if (hif_dev->firmware)
937 release_firmware(hif_dev->firmware);
941 * An exact copy of the function from zd1211rw.
943 static int send_eject_command(struct usb_interface *interface)
945 struct usb_device *udev = interface_to_usbdev(interface);
946 struct usb_host_interface *iface_desc = &interface->altsetting[0];
947 struct usb_endpoint_descriptor *endpoint;
952 /* Find bulk out endpoint */
953 for (r = 1; r >= 0; r--) {
954 endpoint = &iface_desc->endpoint[r].desc;
955 if (usb_endpoint_dir_out(endpoint) &&
956 usb_endpoint_xfer_bulk(endpoint)) {
957 bulk_out_ep = endpoint->bEndpointAddress;
963 "ath9k_htc: Could not find bulk out endpoint\n");
967 cmd = kzalloc(31, GFP_KERNEL);
971 /* USB bulk command block */
972 cmd[0] = 0x55; /* bulk command signature */
973 cmd[1] = 0x53; /* bulk command signature */
974 cmd[2] = 0x42; /* bulk command signature */
975 cmd[3] = 0x43; /* bulk command signature */
976 cmd[14] = 6; /* command length */
978 cmd[15] = 0x1b; /* SCSI command: START STOP UNIT */
979 cmd[19] = 0x2; /* eject disc */
981 dev_info(&udev->dev, "Ejecting storage device...\n");
982 r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, bulk_out_ep),
983 cmd, 31, NULL, 2000);
988 /* At this point, the device disconnects and reconnects with the real
991 usb_set_intfdata(interface, NULL);
995 static int ath9k_hif_usb_probe(struct usb_interface *interface,
996 const struct usb_device_id *id)
998 struct usb_device *udev = interface_to_usbdev(interface);
999 struct hif_device_usb *hif_dev;
1002 if (id->driver_info == STORAGE_DEVICE)
1003 return send_eject_command(interface);
1005 hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
1012 hif_dev->udev = udev;
1013 hif_dev->interface = interface;
1014 hif_dev->device_id = id->idProduct;
1016 udev->reset_resume = 1;
1018 usb_set_intfdata(interface, hif_dev);
1020 hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev, &hif_usb,
1021 &hif_dev->udev->dev);
1022 if (hif_dev->htc_handle == NULL) {
1024 goto err_htc_hw_alloc;
1027 /* Find out which firmware to load */
1029 if (IS_AR7010_DEVICE(id->driver_info))
1030 if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x0202)
1031 hif_dev->fw_name = FIRMWARE_AR7010_1_1;
1033 hif_dev->fw_name = FIRMWARE_AR7010;
1035 hif_dev->fw_name = FIRMWARE_AR9271;
1037 ret = ath9k_hif_usb_dev_init(hif_dev, id->driver_info);
1040 goto err_hif_init_usb;
1043 ret = ath9k_htc_hw_init(hif_dev->htc_handle,
1044 &hif_dev->udev->dev, hif_dev->device_id,
1045 hif_dev->udev->product, id->driver_info);
1048 goto err_htc_hw_init;
1051 dev_info(&hif_dev->udev->dev, "ath9k_htc: USB layer initialized\n");
1056 ath9k_hif_usb_dev_deinit(hif_dev);
1058 ath9k_htc_hw_free(hif_dev->htc_handle);
1060 usb_set_intfdata(interface, NULL);
1067 static void ath9k_hif_usb_reboot(struct usb_device *udev)
1069 u32 reboot_cmd = 0xffffffff;
1073 buf = kmemdup(&reboot_cmd, 4, GFP_KERNEL);
1077 ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, USB_REG_OUT_PIPE),
1080 dev_err(&udev->dev, "ath9k_htc: USB reboot failed\n");
1085 static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
1087 struct usb_device *udev = interface_to_usbdev(interface);
1088 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1089 bool unplugged = (udev->state == USB_STATE_NOTATTACHED) ? true : false;
1094 ath9k_htc_hw_deinit(hif_dev->htc_handle, unplugged);
1095 ath9k_htc_hw_free(hif_dev->htc_handle);
1096 ath9k_hif_usb_dev_deinit(hif_dev);
1097 usb_set_intfdata(interface, NULL);
1099 if (!unplugged && (hif_dev->flags & HIF_USB_START))
1100 ath9k_hif_usb_reboot(udev);
1103 dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
1108 static int ath9k_hif_usb_suspend(struct usb_interface *interface,
1109 pm_message_t message)
1111 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1114 * The device has to be set to FULLSLEEP mode in case no
1117 if (!(hif_dev->flags & HIF_USB_START))
1118 ath9k_htc_suspend(hif_dev->htc_handle);
1120 ath9k_hif_usb_dealloc_urbs(hif_dev);
1125 static int ath9k_hif_usb_resume(struct usb_interface *interface)
1127 struct hif_device_usb *hif_dev = usb_get_intfdata(interface);
1128 struct htc_target *htc_handle = hif_dev->htc_handle;
1131 ret = ath9k_hif_usb_alloc_urbs(hif_dev);
1135 if (hif_dev->firmware) {
1136 ret = ath9k_hif_usb_download_fw(hif_dev,
1137 htc_handle->drv_priv->ah->hw_version.usbdev);
1141 ath9k_hif_usb_dealloc_urbs(hif_dev);
1147 ret = ath9k_htc_resume(htc_handle);
1155 ath9k_hif_usb_dealloc_urbs(hif_dev);
1161 static struct usb_driver ath9k_hif_usb_driver = {
1162 .name = "ath9k_hif_usb",
1163 .probe = ath9k_hif_usb_probe,
1164 .disconnect = ath9k_hif_usb_disconnect,
1166 .suspend = ath9k_hif_usb_suspend,
1167 .resume = ath9k_hif_usb_resume,
1168 .reset_resume = ath9k_hif_usb_resume,
1170 .id_table = ath9k_hif_usb_ids,
1174 int ath9k_hif_usb_init(void)
1176 return usb_register(&ath9k_hif_usb_driver);
1179 void ath9k_hif_usb_exit(void)
1181 usb_deregister(&ath9k_hif_usb_driver);