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 /* bail if this pipe is not initialized */
139 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
140 if (!list_empty(&pipe->urb_list_head)) {
142 list_first_entry(&pipe->urb_list_head,
143 struct ath6kl_urb_context, link);
144 list_del(&urb_context->link);
147 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
152 static void ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe *pipe,
153 struct ath6kl_urb_context *urb_context)
157 /* bail if this pipe is not initialized */
161 spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags);
164 list_add(&urb_context->link, &pipe->urb_list_head);
165 spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags);
168 static void ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context *urb_context)
170 dev_kfree_skb(urb_context->skb);
171 urb_context->skb = NULL;
173 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
176 static inline struct ath6kl_usb *ath6kl_usb_priv(struct ath6kl *ar)
181 /* pipe resource allocation/cleanup */
182 static int ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe *pipe,
185 struct ath6kl_urb_context *urb_context;
188 INIT_LIST_HEAD(&pipe->urb_list_head);
189 init_usb_anchor(&pipe->urb_submitted);
191 for (i = 0; i < urb_cnt; i++) {
192 urb_context = kzalloc(sizeof(struct ath6kl_urb_context),
194 if (urb_context == NULL) {
196 goto fail_alloc_pipe_resources;
199 urb_context->pipe = pipe;
202 * we are only allocate the urb contexts here, the actual URB
203 * is allocated from the kernel as needed to do a transaction
206 ath6kl_usb_free_urb_to_pipe(pipe, urb_context);
209 ath6kl_dbg(ATH6KL_DBG_USB,
210 "ath6kl usb: alloc resources lpipe:%d hpipe:0x%X urbs:%d\n",
211 pipe->logical_pipe_num, pipe->usb_pipe_handle,
214 fail_alloc_pipe_resources:
218 static void ath6kl_usb_free_pipe_resources(struct ath6kl_usb_pipe *pipe)
220 struct ath6kl_urb_context *urb_context;
222 if (pipe->ar_usb == NULL) {
223 /* nothing allocated for this pipe */
227 ath6kl_dbg(ATH6KL_DBG_USB,
228 "ath6kl usb: free resources lpipe:%d"
229 "hpipe:0x%X urbs:%d avail:%d\n",
230 pipe->logical_pipe_num, pipe->usb_pipe_handle,
231 pipe->urb_alloc, pipe->urb_cnt);
233 if (pipe->urb_alloc != pipe->urb_cnt) {
234 ath6kl_dbg(ATH6KL_DBG_USB,
235 "ath6kl usb: urb leak! lpipe:%d"
236 "hpipe:0x%X urbs:%d avail:%d\n",
237 pipe->logical_pipe_num, pipe->usb_pipe_handle,
238 pipe->urb_alloc, pipe->urb_cnt);
242 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
243 if (urb_context == NULL)
249 static void ath6kl_usb_cleanup_pipe_resources(struct ath6kl_usb *ar_usb)
253 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++)
254 ath6kl_usb_free_pipe_resources(&ar_usb->pipes[i]);
257 static u8 ath6kl_usb_get_logical_pipe_num(struct ath6kl_usb *ar_usb,
258 u8 ep_address, int *urb_count)
260 u8 pipe_num = ATH6KL_USB_PIPE_INVALID;
262 switch (ep_address) {
263 case ATH6KL_USB_EP_ADDR_APP_CTRL_IN:
264 pipe_num = ATH6KL_USB_PIPE_RX_CTRL;
265 *urb_count = RX_URB_COUNT;
267 case ATH6KL_USB_EP_ADDR_APP_DATA_IN:
268 pipe_num = ATH6KL_USB_PIPE_RX_DATA;
269 *urb_count = RX_URB_COUNT;
271 case ATH6KL_USB_EP_ADDR_APP_INT_IN:
272 pipe_num = ATH6KL_USB_PIPE_RX_INT;
273 *urb_count = RX_URB_COUNT;
275 case ATH6KL_USB_EP_ADDR_APP_DATA2_IN:
276 pipe_num = ATH6KL_USB_PIPE_RX_DATA2;
277 *urb_count = RX_URB_COUNT;
279 case ATH6KL_USB_EP_ADDR_APP_CTRL_OUT:
280 pipe_num = ATH6KL_USB_PIPE_TX_CTRL;
281 *urb_count = TX_URB_COUNT;
283 case ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT:
284 pipe_num = ATH6KL_USB_PIPE_TX_DATA_LP;
285 *urb_count = TX_URB_COUNT;
287 case ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT:
288 pipe_num = ATH6KL_USB_PIPE_TX_DATA_MP;
289 *urb_count = TX_URB_COUNT;
291 case ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT:
292 pipe_num = ATH6KL_USB_PIPE_TX_DATA_HP;
293 *urb_count = TX_URB_COUNT;
296 /* note: there may be endpoints not currently used */
303 static int ath6kl_usb_setup_pipe_resources(struct ath6kl_usb *ar_usb)
305 struct usb_interface *interface = ar_usb->interface;
306 struct usb_host_interface *iface_desc = interface->cur_altsetting;
307 struct usb_endpoint_descriptor *endpoint;
308 struct ath6kl_usb_pipe *pipe;
309 int i, urbcount, status = 0;
312 ath6kl_dbg(ATH6KL_DBG_USB, "setting up USB Pipes using interface\n");
314 /* walk decriptors and setup pipes */
315 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
316 endpoint = &iface_desc->endpoint[i].desc;
318 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
319 ath6kl_dbg(ATH6KL_DBG_USB,
320 "%s Bulk Ep:0x%2.2X maxpktsz:%d\n",
322 (endpoint->bEndpointAddress) ?
323 "RX" : "TX", endpoint->bEndpointAddress,
324 le16_to_cpu(endpoint->wMaxPacketSize));
325 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
326 ath6kl_dbg(ATH6KL_DBG_USB,
327 "%s Int Ep:0x%2.2X maxpktsz:%d interval:%d\n",
329 (endpoint->bEndpointAddress) ?
330 "RX" : "TX", endpoint->bEndpointAddress,
331 le16_to_cpu(endpoint->wMaxPacketSize),
332 endpoint->bInterval);
333 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
335 ath6kl_dbg(ATH6KL_DBG_USB,
336 "%s ISOC Ep:0x%2.2X maxpktsz:%d interval:%d\n",
338 (endpoint->bEndpointAddress) ?
339 "RX" : "TX", endpoint->bEndpointAddress,
340 le16_to_cpu(endpoint->wMaxPacketSize),
341 endpoint->bInterval);
344 /* Ignore broken descriptors. */
345 if (usb_endpoint_maxp(endpoint) == 0)
351 ath6kl_usb_get_logical_pipe_num(ar_usb,
352 endpoint->bEndpointAddress,
354 if (pipe_num == ATH6KL_USB_PIPE_INVALID)
357 pipe = &ar_usb->pipes[pipe_num];
358 if (pipe->ar_usb != NULL) {
359 /* hmmm..pipe was already setup */
363 pipe->ar_usb = ar_usb;
364 pipe->logical_pipe_num = pipe_num;
365 pipe->ep_address = endpoint->bEndpointAddress;
366 pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize);
368 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
369 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
370 pipe->usb_pipe_handle =
371 usb_rcvbulkpipe(ar_usb->udev,
374 pipe->usb_pipe_handle =
375 usb_sndbulkpipe(ar_usb->udev,
378 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
379 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
380 pipe->usb_pipe_handle =
381 usb_rcvintpipe(ar_usb->udev,
384 pipe->usb_pipe_handle =
385 usb_sndintpipe(ar_usb->udev,
388 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
390 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
391 pipe->usb_pipe_handle =
392 usb_rcvisocpipe(ar_usb->udev,
395 pipe->usb_pipe_handle =
396 usb_sndisocpipe(ar_usb->udev,
401 pipe->ep_desc = endpoint;
403 if (!ATH6KL_USB_IS_DIR_IN(pipe->ep_address))
404 pipe->flags |= ATH6KL_USB_PIPE_FLAG_TX;
406 status = ath6kl_usb_alloc_pipe_resources(pipe, urbcount);
414 /* pipe operations */
415 static void ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe *recv_pipe,
418 struct ath6kl_urb_context *urb_context;
423 urb_context = ath6kl_usb_alloc_urb_from_pipe(recv_pipe);
424 if (urb_context == NULL)
427 urb_context->skb = dev_alloc_skb(buffer_length);
428 if (urb_context->skb == NULL)
429 goto err_cleanup_urb;
431 urb = usb_alloc_urb(0, GFP_ATOMIC);
433 goto err_cleanup_urb;
435 usb_fill_bulk_urb(urb,
436 recv_pipe->ar_usb->udev,
437 recv_pipe->usb_pipe_handle,
438 urb_context->skb->data,
440 ath6kl_usb_recv_complete, urb_context);
442 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
443 "ath6kl usb: bulk recv submit:%d, 0x%X (ep:0x%2.2X), %d bytes buf:0x%p\n",
444 recv_pipe->logical_pipe_num,
445 recv_pipe->usb_pipe_handle, recv_pipe->ep_address,
446 buffer_length, urb_context->skb);
448 usb_anchor_urb(urb, &recv_pipe->urb_submitted);
449 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
452 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
453 "ath6kl usb : usb bulk recv failed %d\n",
455 usb_unanchor_urb(urb);
457 goto err_cleanup_urb;
464 ath6kl_usb_cleanup_recv_urb(urb_context);
468 static void ath6kl_usb_flush_all(struct ath6kl_usb *ar_usb)
472 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
473 if (ar_usb->pipes[i].ar_usb != NULL)
474 usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted);
478 * Flushing any pending I/O may schedule work this call will block
479 * until all scheduled work runs to completion.
481 flush_scheduled_work();
484 static void ath6kl_usb_start_recv_pipes(struct ath6kl_usb *ar_usb)
487 * note: control pipe is no longer used
488 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_cnt_thresh =
489 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_alloc/2;
490 * ath6kl_usb_post_recv_transfers(&ar_usb->
491 * pipes[ATH6KL_USB_PIPE_RX_CTRL],
492 * ATH6KL_USB_RX_BUFFER_SIZE);
495 ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA].urb_cnt_thresh = 1;
497 ath6kl_usb_post_recv_transfers(&ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA],
498 ATH6KL_USB_RX_BUFFER_SIZE);
501 /* hif usb rx/tx completion functions */
502 static void ath6kl_usb_recv_complete(struct urb *urb)
504 struct ath6kl_urb_context *urb_context = urb->context;
505 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
506 struct sk_buff *skb = NULL;
509 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
510 "%s: recv pipe: %d, stat:%d, len:%d urb:0x%p\n", __func__,
511 pipe->logical_pipe_num, urb->status, urb->actual_length,
514 if (urb->status != 0) {
516 switch (urb->status) {
521 * no need to spew these errors when device
522 * removed or urb killed due to driver shutdown
527 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
528 "%s recv pipe: %d (ep:0x%2.2X), failed:%d\n",
529 __func__, pipe->logical_pipe_num,
530 pipe->ep_address, urb->status);
533 goto cleanup_recv_urb;
536 if (urb->actual_length == 0)
537 goto cleanup_recv_urb;
539 skb = urb_context->skb;
541 /* we are going to pass it up */
542 urb_context->skb = NULL;
543 skb_put(skb, urb->actual_length);
545 /* note: queue implements a lock */
546 skb_queue_tail(&pipe->io_comp_queue, skb);
547 schedule_work(&pipe->io_complete_work);
550 ath6kl_usb_cleanup_recv_urb(urb_context);
553 pipe->urb_cnt >= pipe->urb_cnt_thresh) {
554 /* our free urbs are piling up, post more transfers */
555 ath6kl_usb_post_recv_transfers(pipe, ATH6KL_USB_RX_BUFFER_SIZE);
559 static void ath6kl_usb_usb_transmit_complete(struct urb *urb)
561 struct ath6kl_urb_context *urb_context = urb->context;
562 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
565 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
566 "%s: pipe: %d, stat:%d, len:%d\n",
567 __func__, pipe->logical_pipe_num, urb->status,
570 if (urb->status != 0) {
571 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
572 "%s: pipe: %d, failed:%d\n",
573 __func__, pipe->logical_pipe_num, urb->status);
576 skb = urb_context->skb;
577 urb_context->skb = NULL;
578 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
580 /* note: queue implements a lock */
581 skb_queue_tail(&pipe->io_comp_queue, skb);
582 schedule_work(&pipe->io_complete_work);
585 static void ath6kl_usb_io_comp_work(struct work_struct *work)
587 struct ath6kl_usb_pipe *pipe = container_of(work,
588 struct ath6kl_usb_pipe,
590 struct ath6kl_usb *ar_usb;
593 ar_usb = pipe->ar_usb;
595 while ((skb = skb_dequeue(&pipe->io_comp_queue))) {
596 if (pipe->flags & ATH6KL_USB_PIPE_FLAG_TX) {
597 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
598 "ath6kl usb xmit callback buf:0x%p\n", skb);
599 ath6kl_core_tx_complete(ar_usb->ar, skb);
601 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
602 "ath6kl usb recv callback buf:0x%p\n", skb);
603 ath6kl_core_rx_complete(ar_usb->ar, skb,
604 pipe->logical_pipe_num);
609 #define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write))
610 #define ATH6KL_USB_MAX_DIAG_RESP (sizeof(struct ath6kl_usb_ctrl_diag_resp_read))
612 static void ath6kl_usb_destroy(struct ath6kl_usb *ar_usb)
614 ath6kl_usb_flush_all(ar_usb);
616 ath6kl_usb_cleanup_pipe_resources(ar_usb);
618 usb_set_intfdata(ar_usb->interface, NULL);
620 kfree(ar_usb->diag_cmd_buffer);
621 kfree(ar_usb->diag_resp_buffer);
626 static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
628 struct usb_device *dev = interface_to_usbdev(interface);
629 struct ath6kl_usb *ar_usb;
630 struct ath6kl_usb_pipe *pipe;
634 ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL);
636 goto fail_ath6kl_usb_create;
638 usb_set_intfdata(interface, ar_usb);
639 spin_lock_init(&(ar_usb->cs_lock));
641 ar_usb->interface = interface;
643 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
644 pipe = &ar_usb->pipes[i];
645 INIT_WORK(&pipe->io_complete_work,
646 ath6kl_usb_io_comp_work);
647 skb_queue_head_init(&pipe->io_comp_queue);
650 ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL);
651 if (ar_usb->diag_cmd_buffer == NULL) {
653 goto fail_ath6kl_usb_create;
656 ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP,
658 if (ar_usb->diag_resp_buffer == NULL) {
660 goto fail_ath6kl_usb_create;
663 status = ath6kl_usb_setup_pipe_resources(ar_usb);
665 fail_ath6kl_usb_create:
667 ath6kl_usb_destroy(ar_usb);
673 static void ath6kl_usb_device_detached(struct usb_interface *interface)
675 struct ath6kl_usb *ar_usb;
677 ar_usb = usb_get_intfdata(interface);
681 ath6kl_stop_txrx(ar_usb->ar);
683 /* Delay to wait for the target to reboot */
685 ath6kl_core_cleanup(ar_usb->ar);
686 ath6kl_usb_destroy(ar_usb);
689 /* exported hif usb APIs for htc pipe */
690 static void hif_start(struct ath6kl *ar)
692 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
695 ath6kl_usb_start_recv_pipes(device);
697 /* set the TX resource avail threshold for each TX pipe */
698 for (i = ATH6KL_USB_PIPE_TX_CTRL;
699 i <= ATH6KL_USB_PIPE_TX_DATA_HP; i++) {
700 device->pipes[i].urb_cnt_thresh =
701 device->pipes[i].urb_alloc / 2;
705 static int ath6kl_usb_send(struct ath6kl *ar, u8 PipeID,
706 struct sk_buff *hdr_skb, struct sk_buff *skb)
708 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
709 struct ath6kl_usb_pipe *pipe = &device->pipes[PipeID];
710 struct ath6kl_urb_context *urb_context;
711 int usb_status, status = 0;
716 ath6kl_dbg(ATH6KL_DBG_USB_BULK, "+%s pipe : %d, buf:0x%p\n",
717 __func__, PipeID, skb);
719 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
721 if (urb_context == NULL) {
723 * TODO: it is possible to run out of urbs if
724 * 2 endpoints map to the same pipe ID
726 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
727 "%s pipe:%d no urbs left. URB Cnt : %d\n",
728 __func__, PipeID, pipe->urb_cnt);
733 urb_context->skb = skb;
738 urb = usb_alloc_urb(0, GFP_ATOMIC);
741 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
746 usb_fill_bulk_urb(urb,
748 pipe->usb_pipe_handle,
751 ath6kl_usb_usb_transmit_complete, urb_context);
753 if ((len % pipe->max_packet_size) == 0) {
754 /* hit a max packet boundary on this pipe */
755 urb->transfer_flags |= URB_ZERO_PACKET;
758 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
759 "athusb bulk send submit:%d, 0x%X (ep:0x%2.2X), %d bytes\n",
760 pipe->logical_pipe_num, pipe->usb_pipe_handle,
761 pipe->ep_address, len);
763 usb_anchor_urb(urb, &pipe->urb_submitted);
764 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
767 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
768 "ath6kl usb : usb bulk transmit failed %d\n",
770 usb_unanchor_urb(urb);
771 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
781 static void hif_stop(struct ath6kl *ar)
783 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
785 ath6kl_usb_flush_all(device);
788 static void ath6kl_usb_get_default_pipe(struct ath6kl *ar,
789 u8 *ul_pipe, u8 *dl_pipe)
791 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
792 *dl_pipe = ATH6KL_USB_PIPE_RX_CTRL;
795 static int ath6kl_usb_map_service_pipe(struct ath6kl *ar, u16 svc_id,
796 u8 *ul_pipe, u8 *dl_pipe)
801 case HTC_CTRL_RSVD_SVC:
802 case WMI_CONTROL_SVC:
803 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
804 /* due to large control packets, shift to data pipe */
805 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
807 case WMI_DATA_BE_SVC:
808 case WMI_DATA_BK_SVC:
809 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
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_VI_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;
829 case WMI_DATA_VO_SVC:
831 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
832 ar->fw_capabilities))
833 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
835 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
837 * Disable rxdata2 directly, it will be enabled
838 * if FW enable rxdata2
840 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
850 static u16 ath6kl_usb_get_free_queue_number(struct ath6kl *ar, u8 pipe_id)
852 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
854 return device->pipes[pipe_id].urb_cnt;
857 static void hif_detach_htc(struct ath6kl *ar)
859 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
861 ath6kl_usb_flush_all(device);
864 static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb,
865 u8 req, u16 value, u16 index, void *data,
872 buf = kmemdup(data, size, GFP_KERNEL);
877 /* note: if successful returns number of bytes transfered */
878 ret = usb_control_msg(ar_usb->udev,
879 usb_sndctrlpipe(ar_usb->udev, 0),
881 USB_DIR_OUT | USB_TYPE_VENDOR |
882 USB_RECIP_DEVICE, value, index, buf,
886 ath6kl_warn("Failed to submit usb control message: %d\n", ret);
896 static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb,
897 u8 req, u16 value, u16 index, void *data,
904 buf = kmalloc(size, GFP_KERNEL);
909 /* note: if successful returns number of bytes transfered */
910 ret = usb_control_msg(ar_usb->udev,
911 usb_rcvctrlpipe(ar_usb->udev, 0),
913 USB_DIR_IN | USB_TYPE_VENDOR |
914 USB_RECIP_DEVICE, value, index, buf,
918 ath6kl_warn("Failed to read usb control message: %d\n", ret);
923 memcpy((u8 *) data, buf, size);
930 static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb,
931 u8 req_val, u8 *req_buf, u32 req_len,
932 u8 resp_val, u8 *resp_buf, u32 *resp_len)
937 ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0,
943 if (resp_buf == NULL) {
944 /* no expected response */
949 ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0,
950 resp_buf, *resp_len);
955 static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
957 struct ath6kl_usb *ar_usb = ar->hif_priv;
958 struct ath6kl_usb_ctrl_diag_resp_read *resp;
959 struct ath6kl_usb_ctrl_diag_cmd_read *cmd;
963 cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer;
965 memset(cmd, 0, sizeof(*cmd));
966 cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ;
967 cmd->address = cpu_to_le32(address);
968 resp_len = sizeof(*resp);
970 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
971 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
973 sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),
974 ATH6KL_USB_CONTROL_REQ_DIAG_RESP,
975 ar_usb->diag_resp_buffer, &resp_len);
978 ath6kl_warn("diag read32 failed: %d\n", ret);
982 resp = (struct ath6kl_usb_ctrl_diag_resp_read *)
983 ar_usb->diag_resp_buffer;
985 *data = le32_to_cpu(resp->value);
990 static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data)
992 struct ath6kl_usb *ar_usb = ar->hif_priv;
993 struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
996 cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
998 memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
999 cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE);
1000 cmd->address = cpu_to_le32(address);
1003 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
1004 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
1009 ath6kl_warn("diag_write32 failed: %d\n", ret);
1016 static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
1018 struct ath6kl_usb *ar_usb = ar->hif_priv;
1022 ret = ath6kl_usb_submit_ctrl_in(ar_usb,
1023 ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
1026 ath6kl_err("Unable to read the bmi data from the device: %d\n",
1034 static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
1036 struct ath6kl_usb *ar_usb = ar->hif_priv;
1040 ret = ath6kl_usb_submit_ctrl_out(ar_usb,
1041 ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD,
1044 ath6kl_err("unable to send the bmi data to the device: %d\n",
1052 static int ath6kl_usb_power_on(struct ath6kl *ar)
1058 static int ath6kl_usb_power_off(struct ath6kl *ar)
1064 static void ath6kl_usb_stop(struct ath6kl *ar)
1069 static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar)
1072 * USB doesn't support it. Just return.
1077 static int ath6kl_usb_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
1080 * cfg80211 suspend/WOW currently not supported for USB.
1085 static int ath6kl_usb_resume(struct ath6kl *ar)
1088 * cfg80211 resume currently not supported for USB.
1093 static const struct ath6kl_hif_ops ath6kl_usb_ops = {
1094 .diag_read32 = ath6kl_usb_diag_read32,
1095 .diag_write32 = ath6kl_usb_diag_write32,
1096 .bmi_read = ath6kl_usb_bmi_read,
1097 .bmi_write = ath6kl_usb_bmi_write,
1098 .power_on = ath6kl_usb_power_on,
1099 .power_off = ath6kl_usb_power_off,
1100 .stop = ath6kl_usb_stop,
1101 .pipe_send = ath6kl_usb_send,
1102 .pipe_get_default = ath6kl_usb_get_default_pipe,
1103 .pipe_map_service = ath6kl_usb_map_service_pipe,
1104 .pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number,
1105 .cleanup_scatter = ath6kl_usb_cleanup_scatter,
1106 .suspend = ath6kl_usb_suspend,
1107 .resume = ath6kl_usb_resume,
1110 /* ath6kl usb driver registered functions */
1111 static int ath6kl_usb_probe(struct usb_interface *interface,
1112 const struct usb_device_id *id)
1114 struct usb_device *dev = interface_to_usbdev(interface);
1116 struct ath6kl_usb *ar_usb = NULL;
1117 int vendor_id, product_id;
1122 vendor_id = le16_to_cpu(dev->descriptor.idVendor);
1123 product_id = le16_to_cpu(dev->descriptor.idProduct);
1125 ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id);
1126 ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id);
1128 if (interface->cur_altsetting)
1129 ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n",
1130 interface->cur_altsetting->desc.bInterfaceNumber);
1133 if (dev->speed == USB_SPEED_HIGH)
1134 ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n");
1136 ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n");
1138 ar_usb = ath6kl_usb_create(interface);
1140 if (ar_usb == NULL) {
1145 ar = ath6kl_core_create(&ar_usb->udev->dev);
1147 ath6kl_err("Failed to alloc ath6kl core\n");
1149 goto err_usb_destroy;
1152 ar->hif_priv = ar_usb;
1153 ar->hif_type = ATH6KL_HIF_TYPE_USB;
1154 ar->hif_ops = &ath6kl_usb_ops;
1155 ar->mbox_info.block_size = 16;
1156 ar->bmi.max_data_size = 252;
1160 ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_PIPE);
1162 ath6kl_err("Failed to init ath6kl core: %d\n", ret);
1169 ath6kl_core_destroy(ar);
1171 ath6kl_usb_destroy(ar_usb);
1178 static void ath6kl_usb_remove(struct usb_interface *interface)
1180 usb_put_dev(interface_to_usbdev(interface));
1181 ath6kl_usb_device_detached(interface);
1186 static int ath6kl_usb_pm_suspend(struct usb_interface *interface,
1187 pm_message_t message)
1189 struct ath6kl_usb *device;
1190 device = usb_get_intfdata(interface);
1192 ath6kl_usb_flush_all(device);
1196 static int ath6kl_usb_pm_resume(struct usb_interface *interface)
1198 struct ath6kl_usb *device;
1199 device = usb_get_intfdata(interface);
1201 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA],
1202 ATH6KL_USB_RX_BUFFER_SIZE);
1203 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA2],
1204 ATH6KL_USB_RX_BUFFER_SIZE);
1211 #define ath6kl_usb_pm_suspend NULL
1212 #define ath6kl_usb_pm_resume NULL
1216 /* table of devices that work with this driver */
1217 static struct usb_device_id ath6kl_usb_ids[] = {
1218 {USB_DEVICE(0x0cf3, 0x9375)},
1219 {USB_DEVICE(0x0cf3, 0x9374)},
1220 { /* Terminating entry */ },
1223 MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids);
1225 static struct usb_driver ath6kl_usb_driver = {
1226 .name = "ath6kl_usb",
1227 .probe = ath6kl_usb_probe,
1228 .suspend = ath6kl_usb_pm_suspend,
1229 .resume = ath6kl_usb_pm_resume,
1230 .disconnect = ath6kl_usb_remove,
1231 .id_table = ath6kl_usb_ids,
1232 .supports_autosuspend = true,
1233 .disable_hub_initiated_lpm = 1,
1236 module_usb_driver(ath6kl_usb_driver);
1238 MODULE_AUTHOR("Atheros Communications, Inc.");
1239 MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices");
1240 MODULE_LICENSE("Dual BSD/GPL");