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);
346 ath6kl_usb_get_logical_pipe_num(ar_usb,
347 endpoint->bEndpointAddress,
349 if (pipe_num == ATH6KL_USB_PIPE_INVALID)
352 pipe = &ar_usb->pipes[pipe_num];
353 if (pipe->ar_usb != NULL) {
354 /* hmmm..pipe was already setup */
358 pipe->ar_usb = ar_usb;
359 pipe->logical_pipe_num = pipe_num;
360 pipe->ep_address = endpoint->bEndpointAddress;
361 pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize);
363 if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) {
364 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
365 pipe->usb_pipe_handle =
366 usb_rcvbulkpipe(ar_usb->udev,
369 pipe->usb_pipe_handle =
370 usb_sndbulkpipe(ar_usb->udev,
373 } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) {
374 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
375 pipe->usb_pipe_handle =
376 usb_rcvintpipe(ar_usb->udev,
379 pipe->usb_pipe_handle =
380 usb_sndintpipe(ar_usb->udev,
383 } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) {
385 if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) {
386 pipe->usb_pipe_handle =
387 usb_rcvisocpipe(ar_usb->udev,
390 pipe->usb_pipe_handle =
391 usb_sndisocpipe(ar_usb->udev,
396 pipe->ep_desc = endpoint;
398 if (!ATH6KL_USB_IS_DIR_IN(pipe->ep_address))
399 pipe->flags |= ATH6KL_USB_PIPE_FLAG_TX;
401 status = ath6kl_usb_alloc_pipe_resources(pipe, urbcount);
409 /* pipe operations */
410 static void ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe *recv_pipe,
413 struct ath6kl_urb_context *urb_context;
418 urb_context = ath6kl_usb_alloc_urb_from_pipe(recv_pipe);
419 if (urb_context == NULL)
422 urb_context->skb = dev_alloc_skb(buffer_length);
423 if (urb_context->skb == NULL)
424 goto err_cleanup_urb;
426 urb = usb_alloc_urb(0, GFP_ATOMIC);
428 goto err_cleanup_urb;
430 usb_fill_bulk_urb(urb,
431 recv_pipe->ar_usb->udev,
432 recv_pipe->usb_pipe_handle,
433 urb_context->skb->data,
435 ath6kl_usb_recv_complete, urb_context);
437 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
438 "ath6kl usb: bulk recv submit:%d, 0x%X (ep:0x%2.2X), %d bytes buf:0x%p\n",
439 recv_pipe->logical_pipe_num,
440 recv_pipe->usb_pipe_handle, recv_pipe->ep_address,
441 buffer_length, urb_context->skb);
443 usb_anchor_urb(urb, &recv_pipe->urb_submitted);
444 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
447 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
448 "ath6kl usb : usb bulk recv failed %d\n",
450 usb_unanchor_urb(urb);
452 goto err_cleanup_urb;
459 ath6kl_usb_cleanup_recv_urb(urb_context);
463 static void ath6kl_usb_flush_all(struct ath6kl_usb *ar_usb)
467 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
468 if (ar_usb->pipes[i].ar_usb != NULL)
469 usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted);
473 * Flushing any pending I/O may schedule work this call will block
474 * until all scheduled work runs to completion.
476 flush_scheduled_work();
479 static void ath6kl_usb_start_recv_pipes(struct ath6kl_usb *ar_usb)
482 * note: control pipe is no longer used
483 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_cnt_thresh =
484 * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_alloc/2;
485 * ath6kl_usb_post_recv_transfers(&ar_usb->
486 * pipes[ATH6KL_USB_PIPE_RX_CTRL],
487 * ATH6KL_USB_RX_BUFFER_SIZE);
490 ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA].urb_cnt_thresh = 1;
492 ath6kl_usb_post_recv_transfers(&ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA],
493 ATH6KL_USB_RX_BUFFER_SIZE);
496 /* hif usb rx/tx completion functions */
497 static void ath6kl_usb_recv_complete(struct urb *urb)
499 struct ath6kl_urb_context *urb_context = urb->context;
500 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
501 struct sk_buff *skb = NULL;
504 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
505 "%s: recv pipe: %d, stat:%d, len:%d urb:0x%p\n", __func__,
506 pipe->logical_pipe_num, urb->status, urb->actual_length,
509 if (urb->status != 0) {
511 switch (urb->status) {
516 * no need to spew these errors when device
517 * removed or urb killed due to driver shutdown
522 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
523 "%s recv pipe: %d (ep:0x%2.2X), failed:%d\n",
524 __func__, pipe->logical_pipe_num,
525 pipe->ep_address, urb->status);
528 goto cleanup_recv_urb;
531 if (urb->actual_length == 0)
532 goto cleanup_recv_urb;
534 skb = urb_context->skb;
536 /* we are going to pass it up */
537 urb_context->skb = NULL;
538 skb_put(skb, urb->actual_length);
540 /* note: queue implements a lock */
541 skb_queue_tail(&pipe->io_comp_queue, skb);
542 schedule_work(&pipe->io_complete_work);
545 ath6kl_usb_cleanup_recv_urb(urb_context);
548 pipe->urb_cnt >= pipe->urb_cnt_thresh) {
549 /* our free urbs are piling up, post more transfers */
550 ath6kl_usb_post_recv_transfers(pipe, ATH6KL_USB_RX_BUFFER_SIZE);
554 static void ath6kl_usb_usb_transmit_complete(struct urb *urb)
556 struct ath6kl_urb_context *urb_context = urb->context;
557 struct ath6kl_usb_pipe *pipe = urb_context->pipe;
560 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
561 "%s: pipe: %d, stat:%d, len:%d\n",
562 __func__, pipe->logical_pipe_num, urb->status,
565 if (urb->status != 0) {
566 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
567 "%s: pipe: %d, failed:%d\n",
568 __func__, pipe->logical_pipe_num, urb->status);
571 skb = urb_context->skb;
572 urb_context->skb = NULL;
573 ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context);
575 /* note: queue implements a lock */
576 skb_queue_tail(&pipe->io_comp_queue, skb);
577 schedule_work(&pipe->io_complete_work);
580 static void ath6kl_usb_io_comp_work(struct work_struct *work)
582 struct ath6kl_usb_pipe *pipe = container_of(work,
583 struct ath6kl_usb_pipe,
585 struct ath6kl_usb *ar_usb;
588 ar_usb = pipe->ar_usb;
590 while ((skb = skb_dequeue(&pipe->io_comp_queue))) {
591 if (pipe->flags & ATH6KL_USB_PIPE_FLAG_TX) {
592 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
593 "ath6kl usb xmit callback buf:0x%p\n", skb);
594 ath6kl_core_tx_complete(ar_usb->ar, skb);
596 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
597 "ath6kl usb recv callback buf:0x%p\n", skb);
598 ath6kl_core_rx_complete(ar_usb->ar, skb,
599 pipe->logical_pipe_num);
604 #define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write))
605 #define ATH6KL_USB_MAX_DIAG_RESP (sizeof(struct ath6kl_usb_ctrl_diag_resp_read))
607 static void ath6kl_usb_destroy(struct ath6kl_usb *ar_usb)
609 ath6kl_usb_flush_all(ar_usb);
611 ath6kl_usb_cleanup_pipe_resources(ar_usb);
613 usb_set_intfdata(ar_usb->interface, NULL);
615 kfree(ar_usb->diag_cmd_buffer);
616 kfree(ar_usb->diag_resp_buffer);
621 static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface)
623 struct usb_device *dev = interface_to_usbdev(interface);
624 struct ath6kl_usb *ar_usb;
625 struct ath6kl_usb_pipe *pipe;
629 ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL);
631 goto fail_ath6kl_usb_create;
633 usb_set_intfdata(interface, ar_usb);
634 spin_lock_init(&(ar_usb->cs_lock));
636 ar_usb->interface = interface;
638 for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) {
639 pipe = &ar_usb->pipes[i];
640 INIT_WORK(&pipe->io_complete_work,
641 ath6kl_usb_io_comp_work);
642 skb_queue_head_init(&pipe->io_comp_queue);
645 ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL);
646 if (ar_usb->diag_cmd_buffer == NULL) {
648 goto fail_ath6kl_usb_create;
651 ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP,
653 if (ar_usb->diag_resp_buffer == NULL) {
655 goto fail_ath6kl_usb_create;
658 status = ath6kl_usb_setup_pipe_resources(ar_usb);
660 fail_ath6kl_usb_create:
662 ath6kl_usb_destroy(ar_usb);
668 static void ath6kl_usb_device_detached(struct usb_interface *interface)
670 struct ath6kl_usb *ar_usb;
672 ar_usb = usb_get_intfdata(interface);
676 ath6kl_stop_txrx(ar_usb->ar);
678 /* Delay to wait for the target to reboot */
680 ath6kl_core_cleanup(ar_usb->ar);
681 ath6kl_usb_destroy(ar_usb);
684 /* exported hif usb APIs for htc pipe */
685 static void hif_start(struct ath6kl *ar)
687 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
690 ath6kl_usb_start_recv_pipes(device);
692 /* set the TX resource avail threshold for each TX pipe */
693 for (i = ATH6KL_USB_PIPE_TX_CTRL;
694 i <= ATH6KL_USB_PIPE_TX_DATA_HP; i++) {
695 device->pipes[i].urb_cnt_thresh =
696 device->pipes[i].urb_alloc / 2;
700 static int ath6kl_usb_send(struct ath6kl *ar, u8 PipeID,
701 struct sk_buff *hdr_skb, struct sk_buff *skb)
703 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
704 struct ath6kl_usb_pipe *pipe = &device->pipes[PipeID];
705 struct ath6kl_urb_context *urb_context;
706 int usb_status, status = 0;
711 ath6kl_dbg(ATH6KL_DBG_USB_BULK, "+%s pipe : %d, buf:0x%p\n",
712 __func__, PipeID, skb);
714 urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe);
716 if (urb_context == NULL) {
718 * TODO: it is possible to run out of urbs if
719 * 2 endpoints map to the same pipe ID
721 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
722 "%s pipe:%d no urbs left. URB Cnt : %d\n",
723 __func__, PipeID, pipe->urb_cnt);
728 urb_context->skb = skb;
733 urb = usb_alloc_urb(0, GFP_ATOMIC);
736 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
741 usb_fill_bulk_urb(urb,
743 pipe->usb_pipe_handle,
746 ath6kl_usb_usb_transmit_complete, urb_context);
748 if ((len % pipe->max_packet_size) == 0) {
749 /* hit a max packet boundary on this pipe */
750 urb->transfer_flags |= URB_ZERO_PACKET;
753 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
754 "athusb bulk send submit:%d, 0x%X (ep:0x%2.2X), %d bytes\n",
755 pipe->logical_pipe_num, pipe->usb_pipe_handle,
756 pipe->ep_address, len);
758 usb_anchor_urb(urb, &pipe->urb_submitted);
759 usb_status = usb_submit_urb(urb, GFP_ATOMIC);
762 ath6kl_dbg(ATH6KL_DBG_USB_BULK,
763 "ath6kl usb : usb bulk transmit failed %d\n",
765 usb_unanchor_urb(urb);
766 ath6kl_usb_free_urb_to_pipe(urb_context->pipe,
776 static void hif_stop(struct ath6kl *ar)
778 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
780 ath6kl_usb_flush_all(device);
783 static void ath6kl_usb_get_default_pipe(struct ath6kl *ar,
784 u8 *ul_pipe, u8 *dl_pipe)
786 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
787 *dl_pipe = ATH6KL_USB_PIPE_RX_CTRL;
790 static int ath6kl_usb_map_service_pipe(struct ath6kl *ar, u16 svc_id,
791 u8 *ul_pipe, u8 *dl_pipe)
796 case HTC_CTRL_RSVD_SVC:
797 case WMI_CONTROL_SVC:
798 *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL;
799 /* due to large control packets, shift to data pipe */
800 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
802 case WMI_DATA_BE_SVC:
803 case WMI_DATA_BK_SVC:
804 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
806 * Disable rxdata2 directly, it will be enabled
807 * if FW enable rxdata2
809 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
811 case WMI_DATA_VI_SVC:
813 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
814 ar->fw_capabilities))
815 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
817 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
819 * Disable rxdata2 directly, it will be enabled
820 * if FW enable rxdata2
822 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
824 case WMI_DATA_VO_SVC:
826 if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
827 ar->fw_capabilities))
828 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP;
830 *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP;
832 * Disable rxdata2 directly, it will be enabled
833 * if FW enable rxdata2
835 *dl_pipe = ATH6KL_USB_PIPE_RX_DATA;
845 static u16 ath6kl_usb_get_free_queue_number(struct ath6kl *ar, u8 pipe_id)
847 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
849 return device->pipes[pipe_id].urb_cnt;
852 static void hif_detach_htc(struct ath6kl *ar)
854 struct ath6kl_usb *device = ath6kl_usb_priv(ar);
856 ath6kl_usb_flush_all(device);
859 static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb,
860 u8 req, u16 value, u16 index, void *data,
867 buf = kmemdup(data, size, GFP_KERNEL);
872 /* note: if successful returns number of bytes transfered */
873 ret = usb_control_msg(ar_usb->udev,
874 usb_sndctrlpipe(ar_usb->udev, 0),
876 USB_DIR_OUT | USB_TYPE_VENDOR |
877 USB_RECIP_DEVICE, value, index, buf,
881 ath6kl_warn("Failed to submit usb control message: %d\n", ret);
891 static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb,
892 u8 req, u16 value, u16 index, void *data,
899 buf = kmalloc(size, GFP_KERNEL);
904 /* note: if successful returns number of bytes transfered */
905 ret = usb_control_msg(ar_usb->udev,
906 usb_rcvctrlpipe(ar_usb->udev, 0),
908 USB_DIR_IN | USB_TYPE_VENDOR |
909 USB_RECIP_DEVICE, value, index, buf,
913 ath6kl_warn("Failed to read usb control message: %d\n", ret);
918 memcpy((u8 *) data, buf, size);
925 static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb,
926 u8 req_val, u8 *req_buf, u32 req_len,
927 u8 resp_val, u8 *resp_buf, u32 *resp_len)
932 ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0,
938 if (resp_buf == NULL) {
939 /* no expected response */
944 ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0,
945 resp_buf, *resp_len);
950 static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
952 struct ath6kl_usb *ar_usb = ar->hif_priv;
953 struct ath6kl_usb_ctrl_diag_resp_read *resp;
954 struct ath6kl_usb_ctrl_diag_cmd_read *cmd;
958 cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer;
960 memset(cmd, 0, sizeof(*cmd));
961 cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ;
962 cmd->address = cpu_to_le32(address);
963 resp_len = sizeof(*resp);
965 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
966 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
968 sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),
969 ATH6KL_USB_CONTROL_REQ_DIAG_RESP,
970 ar_usb->diag_resp_buffer, &resp_len);
973 ath6kl_warn("diag read32 failed: %d\n", ret);
977 resp = (struct ath6kl_usb_ctrl_diag_resp_read *)
978 ar_usb->diag_resp_buffer;
980 *data = le32_to_cpu(resp->value);
985 static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data)
987 struct ath6kl_usb *ar_usb = ar->hif_priv;
988 struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
991 cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
993 memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
994 cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE);
995 cmd->address = cpu_to_le32(address);
998 ret = ath6kl_usb_ctrl_msg_exchange(ar_usb,
999 ATH6KL_USB_CONTROL_REQ_DIAG_CMD,
1004 ath6kl_warn("diag_write32 failed: %d\n", ret);
1011 static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
1013 struct ath6kl_usb *ar_usb = ar->hif_priv;
1017 ret = ath6kl_usb_submit_ctrl_in(ar_usb,
1018 ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
1021 ath6kl_err("Unable to read the bmi data from the device: %d\n",
1029 static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
1031 struct ath6kl_usb *ar_usb = ar->hif_priv;
1035 ret = ath6kl_usb_submit_ctrl_out(ar_usb,
1036 ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD,
1039 ath6kl_err("unable to send the bmi data to the device: %d\n",
1047 static int ath6kl_usb_power_on(struct ath6kl *ar)
1053 static int ath6kl_usb_power_off(struct ath6kl *ar)
1059 static void ath6kl_usb_stop(struct ath6kl *ar)
1064 static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar)
1067 * USB doesn't support it. Just return.
1072 static int ath6kl_usb_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
1075 * cfg80211 suspend/WOW currently not supported for USB.
1080 static int ath6kl_usb_resume(struct ath6kl *ar)
1083 * cfg80211 resume currently not supported for USB.
1088 static const struct ath6kl_hif_ops ath6kl_usb_ops = {
1089 .diag_read32 = ath6kl_usb_diag_read32,
1090 .diag_write32 = ath6kl_usb_diag_write32,
1091 .bmi_read = ath6kl_usb_bmi_read,
1092 .bmi_write = ath6kl_usb_bmi_write,
1093 .power_on = ath6kl_usb_power_on,
1094 .power_off = ath6kl_usb_power_off,
1095 .stop = ath6kl_usb_stop,
1096 .pipe_send = ath6kl_usb_send,
1097 .pipe_get_default = ath6kl_usb_get_default_pipe,
1098 .pipe_map_service = ath6kl_usb_map_service_pipe,
1099 .pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number,
1100 .cleanup_scatter = ath6kl_usb_cleanup_scatter,
1101 .suspend = ath6kl_usb_suspend,
1102 .resume = ath6kl_usb_resume,
1105 /* ath6kl usb driver registered functions */
1106 static int ath6kl_usb_probe(struct usb_interface *interface,
1107 const struct usb_device_id *id)
1109 struct usb_device *dev = interface_to_usbdev(interface);
1111 struct ath6kl_usb *ar_usb = NULL;
1112 int vendor_id, product_id;
1117 vendor_id = le16_to_cpu(dev->descriptor.idVendor);
1118 product_id = le16_to_cpu(dev->descriptor.idProduct);
1120 ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id);
1121 ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id);
1123 if (interface->cur_altsetting)
1124 ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n",
1125 interface->cur_altsetting->desc.bInterfaceNumber);
1128 if (dev->speed == USB_SPEED_HIGH)
1129 ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n");
1131 ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n");
1133 ar_usb = ath6kl_usb_create(interface);
1135 if (ar_usb == NULL) {
1140 ar = ath6kl_core_create(&ar_usb->udev->dev);
1142 ath6kl_err("Failed to alloc ath6kl core\n");
1144 goto err_usb_destroy;
1147 ar->hif_priv = ar_usb;
1148 ar->hif_type = ATH6KL_HIF_TYPE_USB;
1149 ar->hif_ops = &ath6kl_usb_ops;
1150 ar->mbox_info.block_size = 16;
1151 ar->bmi.max_data_size = 252;
1155 ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_PIPE);
1157 ath6kl_err("Failed to init ath6kl core: %d\n", ret);
1164 ath6kl_core_destroy(ar);
1166 ath6kl_usb_destroy(ar_usb);
1173 static void ath6kl_usb_remove(struct usb_interface *interface)
1175 usb_put_dev(interface_to_usbdev(interface));
1176 ath6kl_usb_device_detached(interface);
1181 static int ath6kl_usb_pm_suspend(struct usb_interface *interface,
1182 pm_message_t message)
1184 struct ath6kl_usb *device;
1185 device = usb_get_intfdata(interface);
1187 ath6kl_usb_flush_all(device);
1191 static int ath6kl_usb_pm_resume(struct usb_interface *interface)
1193 struct ath6kl_usb *device;
1194 device = usb_get_intfdata(interface);
1196 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA],
1197 ATH6KL_USB_RX_BUFFER_SIZE);
1198 ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA2],
1199 ATH6KL_USB_RX_BUFFER_SIZE);
1206 #define ath6kl_usb_pm_suspend NULL
1207 #define ath6kl_usb_pm_resume NULL
1211 /* table of devices that work with this driver */
1212 static const struct usb_device_id ath6kl_usb_ids[] = {
1213 {USB_DEVICE(0x0cf3, 0x9375)},
1214 {USB_DEVICE(0x0cf3, 0x9374)},
1215 { /* Terminating entry */ },
1218 MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids);
1220 static struct usb_driver ath6kl_usb_driver = {
1221 .name = "ath6kl_usb",
1222 .probe = ath6kl_usb_probe,
1223 .suspend = ath6kl_usb_pm_suspend,
1224 .resume = ath6kl_usb_pm_resume,
1225 .disconnect = ath6kl_usb_remove,
1226 .id_table = ath6kl_usb_ids,
1227 .supports_autosuspend = true,
1228 .disable_hub_initiated_lpm = 1,
1231 module_usb_driver(ath6kl_usb_driver);
1233 MODULE_AUTHOR("Atheros Communications, Inc.");
1234 MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices");
1235 MODULE_LICENSE("Dual BSD/GPL");
1236 MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE);
1237 MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE);
1238 MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE);
1239 MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE);
1240 MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE);
1241 MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE);
1242 MODULE_FIRMWARE(AR6004_HW_1_2_FIRMWARE_FILE);
1243 MODULE_FIRMWARE(AR6004_HW_1_2_BOARD_DATA_FILE);
1244 MODULE_FIRMWARE(AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE);
1245 MODULE_FIRMWARE(AR6004_HW_1_3_FW_DIR "/" AR6004_HW_1_3_FIRMWARE_FILE);
1246 MODULE_FIRMWARE(AR6004_HW_1_3_BOARD_DATA_FILE);
1247 MODULE_FIRMWARE(AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE);