2 * Copyright (c) 2007-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <linux/module.h>
19 #include <linux/usb.h>
25 #define TX_URB_COUNT 32
26 #define RX_URB_COUNT 32
27 #define ATH6KL_USB_RX_BUFFER_SIZE 4096
29 /* tx/rx pipes for usb */
30 enum ATH6KL_USB_PIPE_ID {
31 ATH6KL_USB_PIPE_TX_CTRL = 0,
32 ATH6KL_USB_PIPE_TX_DATA_LP,
33 ATH6KL_USB_PIPE_TX_DATA_MP,
34 ATH6KL_USB_PIPE_TX_DATA_HP,
35 ATH6KL_USB_PIPE_RX_CTRL,
36 ATH6KL_USB_PIPE_RX_DATA,
37 ATH6KL_USB_PIPE_RX_DATA2,
38 ATH6KL_USB_PIPE_RX_INT,
42 #define ATH6KL_USB_PIPE_INVALID ATH6KL_USB_PIPE_MAX
44 struct ath6kl_usb_pipe {
45 struct list_head urb_list_head;
46 struct usb_anchor urb_submitted;
50 unsigned int usb_pipe_handle;
54 struct ath6kl_usb *ar_usb;
56 struct work_struct io_complete_work;
57 struct sk_buff_head io_comp_queue;
58 struct usb_endpoint_descriptor *ep_desc;
61 #define ATH6KL_USB_PIPE_FLAG_TX (1 << 0)
63 /* usb device object */
65 /* protects pipe->urb_list_head and pipe->urb_cnt */
68 struct usb_device *udev;
69 struct usb_interface *interface;
70 struct ath6kl_usb_pipe pipes[ATH6KL_USB_PIPE_MAX];
77 struct ath6kl_urb_context {
78 struct list_head link;
79 struct ath6kl_usb_pipe *pipe;
84 /* USB endpoint definitions */
85 #define ATH6KL_USB_EP_ADDR_APP_CTRL_IN 0x81
86 #define ATH6KL_USB_EP_ADDR_APP_DATA_IN 0x82
87 #define ATH6KL_USB_EP_ADDR_APP_DATA2_IN 0x83
88 #define ATH6KL_USB_EP_ADDR_APP_INT_IN 0x84
90 #define ATH6KL_USB_EP_ADDR_APP_CTRL_OUT 0x01
91 #define ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT 0x02
92 #define ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT 0x03
93 #define ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT 0x04
95 /* diagnostic command defnitions */
96 #define ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD 1
97 #define ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP 2
98 #define ATH6KL_USB_CONTROL_REQ_DIAG_CMD 3
99 #define ATH6KL_USB_CONTROL_REQ_DIAG_RESP 4
101 #define ATH6KL_USB_CTRL_DIAG_CC_READ 0
102 #define ATH6KL_USB_CTRL_DIAG_CC_WRITE 1
104 struct ath6kl_usb_ctrl_diag_cmd_write {
111 struct ath6kl_usb_ctrl_diag_cmd_read {
116 struct ath6kl_usb_ctrl_diag_resp_read {
120 /* function declarations */
121 static void ath6kl_usb_recv_complete(struct urb *urb);
123 #define ATH6KL_USB_IS_BULK_EP(attr) (((attr) & 3) == 0x02)
124 #define ATH6KL_USB_IS_INT_EP(attr) (((attr) & 3) == 0x03)
125 #define ATH6KL_USB_IS_ISOC_EP(attr) (((attr) & 3) == 0x01)
126 #define ATH6KL_USB_IS_DIR_IN(addr) ((addr) & 0x80)
128 /* pipe/urb operations */
129 static struct ath6kl_urb_context *
130 ath6kl_usb_alloc_urb_from_pipe(struct ath6kl_usb_pipe *pipe)
132 struct ath6kl_urb_context *urb_context = NULL;
135 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
136 if (!list_empty(&pipe->urb_list_head)) {
138 list_first_entry(&pipe->urb_list_head,
139 struct ath6kl_urb_context, link);
140 list_del(&urb_context->link);
143 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
148 static void ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe *pipe,
149 struct ath6kl_urb_context *urb_context)
153 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
156 list_add(&urb_context->link, &pipe->urb_list_head);
157 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
160 static void ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context *urb_context)
162 dev_kfree_skb(urb_context->skb);
163 urb_context->skb = NULL;
165 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
168 static inline struct ath6kl_usb *ath6kl_usb_priv(struct ath6kl *ar)
173 /* pipe resource allocation/cleanup */
174 static int ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe *pipe,
177 struct ath6kl_urb_context *urb_context;
180 INIT_LIST_HEAD(&pipe->urb_list_head);
181 init_usb_anchor(&pipe->urb_submitted);
183 for (i = 0; i < urb_cnt; i++) {
184 urb_context = kzalloc(sizeof(struct ath6kl_urb_context),
186 if (urb_context == NULL) {
188 goto fail_alloc_pipe_resources;
191 urb_context->pipe = pipe;
194 * we are only allocate the urb contexts here, the actual URB
195 * is allocated from the kernel as needed to do a transaction
198 ath6kl_usb_free_urb_to_pipe(pipe, urb_context);
201 ath6kl_dbg(ATH6KL_DBG_USB,
202 "ath6kl usb: alloc resources lpipe:%d hpipe:0x%X urbs:%d\n",
203 pipe->logical_pipe_num, pipe->usb_pipe_handle,
206 fail_alloc_pipe_resources:
210 static void ath6kl_usb_free_pipe_resources(struct ath6kl_usb_pipe *pipe)
212 struct ath6kl_urb_context *urb_context;
214 if (pipe->ar_usb == NULL) {
215 /* nothing allocated for this pipe */
219 ath6kl_dbg(ATH6KL_DBG_USB,
220 "ath6kl usb: free resources lpipe:%d"
221 "hpipe:0x%X urbs:%d avail:%d\n",
222 pipe->logical_pipe_num, pipe->usb_pipe_handle,
223 pipe->urb_alloc, pipe->urb_cnt);
225 if (pipe->urb_alloc != pipe->urb_cnt) {
226 ath6kl_dbg(ATH6KL_DBG_USB,
227 "ath6kl usb: urb leak! lpipe:%d"
228 "hpipe:0x%X urbs:%d avail:%d\n",
229 pipe->logical_pipe_num, pipe->usb_pipe_handle,
230 pipe->urb_alloc, pipe->urb_cnt);
234 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
235 if (urb_context == NULL)
241 static void ath6kl_usb_cleanup_pipe_resources(struct ath6kl_usb *ar_usb)
245 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++)
246 ath6kl_usb_free_pipe_resources(&ar_usb->pipes[i]);
249 static u8 ath6kl_usb_get_logical_pipe_num(struct ath6kl_usb *ar_usb,
250 u8 ep_address, int *urb_count)
252 u8 pipe_num = ATH6KL_USB_PIPE_INVALID;
254 switch (ep_address) {
255 case ATH6KL_USB_EP_ADDR_APP_CTRL_IN:
256 pipe_num = ATH6KL_USB_PIPE_RX_CTRL;
257 *urb_count = RX_URB_COUNT;
259 case ATH6KL_USB_EP_ADDR_APP_DATA_IN:
260 pipe_num = ATH6KL_USB_PIPE_RX_DATA;
261 *urb_count = RX_URB_COUNT;
263 case ATH6KL_USB_EP_ADDR_APP_INT_IN:
264 pipe_num = ATH6KL_USB_PIPE_RX_INT;
265 *urb_count = RX_URB_COUNT;
267 case ATH6KL_USB_EP_ADDR_APP_DATA2_IN:
268 pipe_num = ATH6KL_USB_PIPE_RX_DATA2;
269 *urb_count = RX_URB_COUNT;
271 case ATH6KL_USB_EP_ADDR_APP_CTRL_OUT:
272 pipe_num = ATH6KL_USB_PIPE_TX_CTRL;
273 *urb_count = TX_URB_COUNT;
275 case ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT:
276 pipe_num = ATH6KL_USB_PIPE_TX_DATA_LP;
277 *urb_count = TX_URB_COUNT;
279 case ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT:
280 pipe_num = ATH6KL_USB_PIPE_TX_DATA_MP;
281 *urb_count = TX_URB_COUNT;
283 case ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT:
284 pipe_num = ATH6KL_USB_PIPE_TX_DATA_HP;
285 *urb_count = TX_URB_COUNT;
288 /* note: there may be endpoints not currently used */
295 static int ath6kl_usb_setup_pipe_resources(struct ath6kl_usb *ar_usb)
297 struct usb_interface *interface = ar_usb->interface;
298 struct usb_host_interface *iface_desc = interface->cur_altsetting;
299 struct usb_endpoint_descriptor *endpoint;
300 struct ath6kl_usb_pipe *pipe;
301 int i, urbcount, status = 0;
304 ath6kl_dbg(ATH6KL_DBG_USB, "setting up USB Pipes using interface\n");
306 /* walk decriptors and setup pipes */
307 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
308 endpoint = &iface_desc->endpoint[i].desc;
310 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
311 ath6kl_dbg(ATH6KL_DBG_USB,
312 "%s Bulk Ep:0x%2.2X maxpktsz:%d\n",
314 (endpoint->bEndpointAddress) ?
315 "RX" : "TX", endpoint->bEndpointAddress,
316 le16_to_cpu(endpoint->wMaxPacketSize));
317 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
318 ath6kl_dbg(ATH6KL_DBG_USB,
319 "%s Int Ep:0x%2.2X maxpktsz:%d interval:%d\n",
321 (endpoint->bEndpointAddress) ?
322 "RX" : "TX", endpoint->bEndpointAddress,
323 le16_to_cpu(endpoint->wMaxPacketSize),
324 endpoint->bInterval);
325 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
327 ath6kl_dbg(ATH6KL_DBG_USB,
328 "%s ISOC Ep:0x%2.2X maxpktsz:%d interval:%d\n",
330 (endpoint->bEndpointAddress) ?
331 "RX" : "TX", endpoint->bEndpointAddress,
332 le16_to_cpu(endpoint->wMaxPacketSize),
333 endpoint->bInterval);
338 ath6kl_usb_get_logical_pipe_num(ar_usb,
339 endpoint->bEndpointAddress,
341 if (pipe_num == ATH6KL_USB_PIPE_INVALID)
344 pipe = &ar_usb->pipes[pipe_num];
345 if (pipe->ar_usb != NULL) {
346 /* hmmm..pipe was already setup */
350 pipe->ar_usb = ar_usb;
351 pipe->logical_pipe_num = pipe_num;
352 pipe->ep_address = endpoint->bEndpointAddress;
353 pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize);
355 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
356 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
357 pipe->usb_pipe_handle =
358 usb_rcvbulkpipe(ar_usb->udev,
361 pipe->usb_pipe_handle =
362 usb_sndbulkpipe(ar_usb->udev,
365 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
366 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
367 pipe->usb_pipe_handle =
368 usb_rcvintpipe(ar_usb->udev,
371 pipe->usb_pipe_handle =
372 usb_sndintpipe(ar_usb->udev,
375 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
377 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
378 pipe->usb_pipe_handle =
379 usb_rcvisocpipe(ar_usb->udev,
382 pipe->usb_pipe_handle =
383 usb_sndisocpipe(ar_usb->udev,
388 pipe->ep_desc = endpoint;
390 if (!ATH6KL_USB_IS_DIR_IN(pipe->ep_address))
391 pipe->flags |= ATH6KL_USB_PIPE_FLAG_TX;
393 status = ath6kl_usb_alloc_pipe_resources(pipe, urbcount);
401 /* pipe operations */
402 static void ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe *recv_pipe,
405 struct ath6kl_urb_context *urb_context;
410 urb_context = ath6kl_usb_alloc_urb_from_pipe(recv_pipe);
411 if (urb_context == NULL)
414 urb_context->skb = dev_alloc_skb(buffer_length);
415 if (urb_context->skb == NULL)
416 goto err_cleanup_urb;
418 urb = usb_alloc_urb(0, GFP_ATOMIC);
420 goto err_cleanup_urb;
422 usb_fill_bulk_urb(urb,
423 recv_pipe->ar_usb->udev,
424 recv_pipe->usb_pipe_handle,
425 urb_context->skb->data,
427 ath6kl_usb_recv_complete, urb_context);
429 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
430 "ath6kl usb: bulk recv submit:%d, 0x%X (ep:0x%2.2X), %d bytes buf:0x%p\n",
431 recv_pipe->logical_pipe_num,
432 recv_pipe->usb_pipe_handle, recv_pipe->ep_address,
433 buffer_length, urb_context->skb);
435 usb_anchor_urb(urb, &recv_pipe->urb_submitted);
436 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
439 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
440 "ath6kl usb : usb bulk recv failed %d\n",
442 usb_unanchor_urb(urb);
444 goto err_cleanup_urb;
451 ath6kl_usb_cleanup_recv_urb(urb_context);
455 static void ath6kl_usb_flush_all(struct ath6kl_usb *ar_usb)
459 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
460 if (ar_usb->pipes[i].ar_usb != NULL)
461 usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted);
465 * Flushing any pending I/O may schedule work this call will block
466 * until all scheduled work runs to completion.
468 flush_scheduled_work();
471 static void ath6kl_usb_start_recv_pipes(struct ath6kl_usb *ar_usb)
474 * note: control pipe is no longer used
475 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_cnt_thresh =
476 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_alloc/2;
477 * ath6kl_usb_post_recv_transfers(&ar_usb->
478 * pipes[ATH6KL_USB_PIPE_RX_CTRL],
479 * ATH6KL_USB_RX_BUFFER_SIZE);
482 ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA].urb_cnt_thresh = 1;
484 ath6kl_usb_post_recv_transfers(&ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA],
485 ATH6KL_USB_RX_BUFFER_SIZE);
488 /* hif usb rx/tx completion functions */
489 static void ath6kl_usb_recv_complete(struct urb *urb)
491 struct ath6kl_urb_context *urb_context = urb->context;
492 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
493 struct sk_buff *skb = NULL;
496 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
497 "%s: recv pipe: %d, stat:%d, len:%d urb:0x%p\n", __func__,
498 pipe->logical_pipe_num, urb->status, urb->actual_length,
501 if (urb->status != 0) {
503 switch (urb->status) {
508 * no need to spew these errors when device
509 * removed or urb killed due to driver shutdown
514 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
515 "%s recv pipe: %d (ep:0x%2.2X), failed:%d\n",
516 __func__, pipe->logical_pipe_num,
517 pipe->ep_address, urb->status);
520 goto cleanup_recv_urb;
523 if (urb->actual_length == 0)
524 goto cleanup_recv_urb;
526 skb = urb_context->skb;
528 /* we are going to pass it up */
529 urb_context->skb = NULL;
530 skb_put(skb, urb->actual_length);
532 /* note: queue implements a lock */
533 skb_queue_tail(&pipe->io_comp_queue, skb);
534 schedule_work(&pipe->io_complete_work);
537 ath6kl_usb_cleanup_recv_urb(urb_context);
540 pipe->urb_cnt >= pipe->urb_cnt_thresh) {
541 /* our free urbs are piling up, post more transfers */
542 ath6kl_usb_post_recv_transfers(pipe, ATH6KL_USB_RX_BUFFER_SIZE);
546 static void ath6kl_usb_usb_transmit_complete(struct urb *urb)
548 struct ath6kl_urb_context *urb_context = urb->context;
549 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
552 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
553 "%s: pipe: %d, stat:%d, len:%d\n",
554 __func__, pipe->logical_pipe_num, urb->status,
557 if (urb->status != 0) {
558 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
559 "%s: pipe: %d, failed:%d\n",
560 __func__, pipe->logical_pipe_num, urb->status);
563 skb = urb_context->skb;
564 urb_context->skb = NULL;
565 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
567 /* note: queue implements a lock */
568 skb_queue_tail(&pipe->io_comp_queue, skb);
569 schedule_work(&pipe->io_complete_work);
572 static void ath6kl_usb_io_comp_work(struct work_struct *work)
574 struct ath6kl_usb_pipe *pipe = container_of(work,
575 struct ath6kl_usb_pipe,
577 struct ath6kl_usb *ar_usb;
580 ar_usb = pipe->ar_usb;
582 while ((skb = skb_dequeue(&pipe->io_comp_queue))) {
583 if (pipe->flags & ATH6KL_USB_PIPE_FLAG_TX) {
584 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
585 "ath6kl usb xmit callback buf:0x%p\n", skb);
586 ath6kl_core_tx_complete(ar_usb->ar, skb);
588 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
589 "ath6kl usb recv callback buf:0x%p\n", skb);
590 ath6kl_core_rx_complete(ar_usb->ar, skb,
591 pipe->logical_pipe_num);
596 #define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write))
597 #define ATH6KL_USB_MAX_DIAG_RESP (sizeof(struct ath6kl_usb_ctrl_diag_resp_read))
599 static void ath6kl_usb_destroy(struct ath6kl_usb *ar_usb)
601 ath6kl_usb_flush_all(ar_usb);
603 ath6kl_usb_cleanup_pipe_resources(ar_usb);
605 usb_set_intfdata(ar_usb->interface, NULL);
607 kfree(ar_usb->diag_cmd_buffer);
608 kfree(ar_usb->diag_resp_buffer);
613 static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
615 struct usb_device *dev = interface_to_usbdev(interface);
616 struct ath6kl_usb *ar_usb;
617 struct ath6kl_usb_pipe *pipe;
621 ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL);
623 goto fail_ath6kl_usb_create;
625 usb_set_intfdata(interface, ar_usb);
626 spin_lock_init(&(ar_usb->cs_lock));
628 ar_usb->interface = interface;
630 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
631 pipe = &ar_usb->pipes[i];
632 INIT_WORK(&pipe->io_complete_work,
633 ath6kl_usb_io_comp_work);
634 skb_queue_head_init(&pipe->io_comp_queue);
637 ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL);
638 if (ar_usb->diag_cmd_buffer == NULL) {
640 goto fail_ath6kl_usb_create;
643 ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP,
645 if (ar_usb->diag_resp_buffer == NULL) {
647 goto fail_ath6kl_usb_create;
650 status = ath6kl_usb_setup_pipe_resources(ar_usb);
652 fail_ath6kl_usb_create:
654 ath6kl_usb_destroy(ar_usb);
660 static void ath6kl_usb_device_detached(struct usb_interface *interface)
662 struct ath6kl_usb *ar_usb;
664 ar_usb = usb_get_intfdata(interface);
668 ath6kl_stop_txrx(ar_usb->ar);
670 /* Delay to wait for the target to reboot */
672 ath6kl_core_cleanup(ar_usb->ar);
673 ath6kl_usb_destroy(ar_usb);
676 /* exported hif usb APIs for htc pipe */
677 static void hif_start(struct ath6kl *ar)
679 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
682 ath6kl_usb_start_recv_pipes(device);
684 /* set the TX resource avail threshold for each TX pipe */
685 for (i = ATH6KL_USB_PIPE_TX_CTRL;
686 i <= ATH6KL_USB_PIPE_TX_DATA_HP; i++) {
687 device->pipes[i].urb_cnt_thresh =
688 device->pipes[i].urb_alloc / 2;
692 static int ath6kl_usb_send(struct ath6kl *ar, u8 PipeID,
693 struct sk_buff *hdr_skb, struct sk_buff *skb)
695 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
696 struct ath6kl_usb_pipe *pipe = &device->pipes[PipeID];
697 struct ath6kl_urb_context *urb_context;
698 int usb_status, status = 0;
703 ath6kl_dbg(ATH6KL_DBG_USB_BULK, "+%s pipe : %d, buf:0x%p\n",
704 __func__, PipeID, skb);
706 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
708 if (urb_context == NULL) {
710 * TODO: it is possible to run out of urbs if
711 * 2 endpoints map to the same pipe ID
713 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
714 "%s pipe:%d no urbs left. URB Cnt : %d\n",
715 __func__, PipeID, pipe->urb_cnt);
720 urb_context->skb = skb;
725 urb = usb_alloc_urb(0, GFP_ATOMIC);
728 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
733 usb_fill_bulk_urb(urb,
735 pipe->usb_pipe_handle,
738 ath6kl_usb_usb_transmit_complete, urb_context);
740 if ((len % pipe->max_packet_size) == 0) {
741 /* hit a max packet boundary on this pipe */
742 urb->transfer_flags |= URB_ZERO_PACKET;
745 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
746 "athusb bulk send submit:%d, 0x%X (ep:0x%2.2X), %d bytes\n",
747 pipe->logical_pipe_num, pipe->usb_pipe_handle,
748 pipe->ep_address, len);
750 usb_anchor_urb(urb, &pipe->urb_submitted);
751 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
754 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
755 "ath6kl usb : usb bulk transmit failed %d\n",
757 usb_unanchor_urb(urb);
758 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
768 static void hif_stop(struct ath6kl *ar)
770 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
772 ath6kl_usb_flush_all(device);
775 static void ath6kl_usb_get_default_pipe(struct ath6kl *ar,
776 u8 *ul_pipe, u8 *dl_pipe)
778 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
779 *dl_pipe = ATH6KL_USB_PIPE_RX_CTRL;
782 static int ath6kl_usb_map_service_pipe(struct ath6kl *ar, u16 svc_id,
783 u8 *ul_pipe, u8 *dl_pipe)
788 case HTC_CTRL_RSVD_SVC:
789 case WMI_CONTROL_SVC:
790 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
791 /* due to large control packets, shift to data pipe */
792 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
794 case WMI_DATA_BE_SVC:
795 case WMI_DATA_BK_SVC:
796 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
798 * Disable rxdata2 directly, it will be enabled
799 * if FW enable rxdata2
801 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
803 case WMI_DATA_VI_SVC:
805 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
806 ar->fw_capabilities))
807 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
809 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
811 * Disable rxdata2 directly, it will be enabled
812 * if FW enable rxdata2
814 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
816 case WMI_DATA_VO_SVC:
818 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
819 ar->fw_capabilities))
820 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
822 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
824 * Disable rxdata2 directly, it will be enabled
825 * if FW enable rxdata2
827 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
837 static u16 ath6kl_usb_get_free_queue_number(struct ath6kl *ar, u8 pipe_id)
839 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
841 return device->pipes[pipe_id].urb_cnt;
844 static void hif_detach_htc(struct ath6kl *ar)
846 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
848 ath6kl_usb_flush_all(device);
851 static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb,
852 u8 req, u16 value, u16 index, void *data,
859 buf = kmemdup(data, size, GFP_KERNEL);
864 /* note: if successful returns number of bytes transfered */
865 ret = usb_control_msg(ar_usb->udev,
866 usb_sndctrlpipe(ar_usb->udev, 0),
868 USB_DIR_OUT | USB_TYPE_VENDOR |
869 USB_RECIP_DEVICE, value, index, buf,
873 ath6kl_warn("Failed to submit usb control message: %d\n", ret);
883 static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb,
884 u8 req, u16 value, u16 index, void *data,
891 buf = kmalloc(size, GFP_KERNEL);
896 /* note: if successful returns number of bytes transfered */
897 ret = usb_control_msg(ar_usb->udev,
898 usb_rcvctrlpipe(ar_usb->udev, 0),
900 USB_DIR_IN | USB_TYPE_VENDOR |
901 USB_RECIP_DEVICE, value, index, buf,
905 ath6kl_warn("Failed to read usb control message: %d\n", ret);
910 memcpy((u8 *) data, buf, size);
917 static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb,
918 u8 req_val, u8 *req_buf, u32 req_len,
919 u8 resp_val, u8 *resp_buf, u32 *resp_len)
924 ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0,
930 if (resp_buf == NULL) {
931 /* no expected response */
936 ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0,
937 resp_buf, *resp_len);
942 static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
944 struct ath6kl_usb *ar_usb = ar->hif_priv;
945 struct ath6kl_usb_ctrl_diag_resp_read *resp;
946 struct ath6kl_usb_ctrl_diag_cmd_read *cmd;
950 cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer;
952 memset(cmd, 0, sizeof(*cmd));
953 cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ;
954 cmd->address = cpu_to_le32(address);
955 resp_len = sizeof(*resp);
957 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
958 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
960 sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),
961 ATH6KL_USB_CONTROL_REQ_DIAG_RESP,
962 ar_usb->diag_resp_buffer, &resp_len);
965 ath6kl_warn("diag read32 failed: %d\n", ret);
969 resp = (struct ath6kl_usb_ctrl_diag_resp_read *)
970 ar_usb->diag_resp_buffer;
972 *data = le32_to_cpu(resp->value);
977 static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data)
979 struct ath6kl_usb *ar_usb = ar->hif_priv;
980 struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
983 cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
985 memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
986 cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE);
987 cmd->address = cpu_to_le32(address);
990 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
991 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
996 ath6kl_warn("diag_write32 failed: %d\n", ret);
1003 static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
1005 struct ath6kl_usb *ar_usb = ar->hif_priv;
1009 ret = ath6kl_usb_submit_ctrl_in(ar_usb,
1010 ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
1013 ath6kl_err("Unable to read the bmi data from the device: %d\n",
1021 static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
1023 struct ath6kl_usb *ar_usb = ar->hif_priv;
1027 ret = ath6kl_usb_submit_ctrl_out(ar_usb,
1028 ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD,
1031 ath6kl_err("unable to send the bmi data to the device: %d\n",
1039 static int ath6kl_usb_power_on(struct ath6kl *ar)
1045 static int ath6kl_usb_power_off(struct ath6kl *ar)
1051 static void ath6kl_usb_stop(struct ath6kl *ar)
1056 static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar)
1059 * USB doesn't support it. Just return.
1064 static int ath6kl_usb_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
1067 * cfg80211 suspend/WOW currently not supported for USB.
1072 static int ath6kl_usb_resume(struct ath6kl *ar)
1075 * cfg80211 resume currently not supported for USB.
1080 static const struct ath6kl_hif_ops ath6kl_usb_ops = {
1081 .diag_read32 = ath6kl_usb_diag_read32,
1082 .diag_write32 = ath6kl_usb_diag_write32,
1083 .bmi_read = ath6kl_usb_bmi_read,
1084 .bmi_write = ath6kl_usb_bmi_write,
1085 .power_on = ath6kl_usb_power_on,
1086 .power_off = ath6kl_usb_power_off,
1087 .stop = ath6kl_usb_stop,
1088 .pipe_send = ath6kl_usb_send,
1089 .pipe_get_default = ath6kl_usb_get_default_pipe,
1090 .pipe_map_service = ath6kl_usb_map_service_pipe,
1091 .pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number,
1092 .cleanup_scatter = ath6kl_usb_cleanup_scatter,
1093 .suspend = ath6kl_usb_suspend,
1094 .resume = ath6kl_usb_resume,
1097 /* ath6kl usb driver registered functions */
1098 static int ath6kl_usb_probe(struct usb_interface *interface,
1099 const struct usb_device_id *id)
1101 struct usb_device *dev = interface_to_usbdev(interface);
1103 struct ath6kl_usb *ar_usb = NULL;
1104 int vendor_id, product_id;
1109 vendor_id = le16_to_cpu(dev->descriptor.idVendor);
1110 product_id = le16_to_cpu(dev->descriptor.idProduct);
1112 ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id);
1113 ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id);
1115 if (interface->cur_altsetting)
1116 ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n",
1117 interface->cur_altsetting->desc.bInterfaceNumber);
1120 if (dev->speed == USB_SPEED_HIGH)
1121 ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n");
1123 ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n");
1125 ar_usb = ath6kl_usb_create(interface);
1127 if (ar_usb == NULL) {
1132 ar = ath6kl_core_create(&ar_usb->udev->dev);
1134 ath6kl_err("Failed to alloc ath6kl core\n");
1136 goto err_usb_destroy;
1139 ar->hif_priv = ar_usb;
1140 ar->hif_type = ATH6KL_HIF_TYPE_USB;
1141 ar->hif_ops = &ath6kl_usb_ops;
1142 ar->mbox_info.block_size = 16;
1143 ar->bmi.max_data_size = 252;
1147 ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_PIPE);
1149 ath6kl_err("Failed to init ath6kl core: %d\n", ret);
1156 ath6kl_core_destroy(ar);
1158 ath6kl_usb_destroy(ar_usb);
1165 static void ath6kl_usb_remove(struct usb_interface *interface)
1167 usb_put_dev(interface_to_usbdev(interface));
1168 ath6kl_usb_device_detached(interface);
1173 static int ath6kl_usb_pm_suspend(struct usb_interface *interface,
1174 pm_message_t message)
1176 struct ath6kl_usb *device;
1177 device = usb_get_intfdata(interface);
1179 ath6kl_usb_flush_all(device);
1183 static int ath6kl_usb_pm_resume(struct usb_interface *interface)
1185 struct ath6kl_usb *device;
1186 device = usb_get_intfdata(interface);
1188 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA],
1189 ATH6KL_USB_RX_BUFFER_SIZE);
1190 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA2],
1191 ATH6KL_USB_RX_BUFFER_SIZE);
1198 #define ath6kl_usb_pm_suspend NULL
1199 #define ath6kl_usb_pm_resume NULL
1203 /* table of devices that work with this driver */
1204 static struct usb_device_id ath6kl_usb_ids[] = {
1205 {USB_DEVICE(0x0cf3, 0x9375)},
1206 {USB_DEVICE(0x0cf3, 0x9374)},
1207 { /* Terminating entry */ },
1210 MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids);
1212 static struct usb_driver ath6kl_usb_driver = {
1213 .name = "ath6kl_usb",
1214 .probe = ath6kl_usb_probe,
1215 .suspend = ath6kl_usb_pm_suspend,
1216 .resume = ath6kl_usb_pm_resume,
1217 .disconnect = ath6kl_usb_remove,
1218 .id_table = ath6kl_usb_ids,
1219 .supports_autosuspend = true,
1220 .disable_hub_initiated_lpm = 1,
1223 module_usb_driver(ath6kl_usb_driver);
1225 MODULE_AUTHOR("Atheros Communications, Inc.");
1226 MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices");
1227 MODULE_LICENSE("Dual BSD/GPL");
1228 MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE);
1229 MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE);
1230 MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE);
1231 MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE);
1232 MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE);
1233 MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE);
1234 MODULE_FIRMWARE(AR6004_HW_1_2_FIRMWARE_FILE);
1235 MODULE_FIRMWARE(AR6004_HW_1_2_BOARD_DATA_FILE);
1236 MODULE_FIRMWARE(AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE);
1237 MODULE_FIRMWARE(AR6004_HW_1_3_FW_DIR "/" AR6004_HW_1_3_FIRMWARE_FILE);
1238 MODULE_FIRMWARE(AR6004_HW_1_3_BOARD_DATA_FILE);
1239 MODULE_FIRMWARE(AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE);