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mwifiex: correction in sleep confirm command sequence number
[deliverable/linux.git] / drivers / net / wireless / mwifiex / usb.c
CommitLineData
4daffe35
AK		 1/*
2 * Marvell Wireless LAN device driver: USB specific handling
3 *
4 * Copyright (C) 2012, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20#include "main.h"
21#include "usb.h"
22
23#define USB_VERSION "1.0"
24
4daffe35
AK		 25static struct mwifiex_if_ops usb_ops;
26static struct semaphore add_remove_card_sem;
027d3307 27static struct usb_card_rec *usb_card;
4daffe35
AK		 28
29static struct usb_device_id mwifiex_usb_table[] = {
68458ded
YAP		 30 /* 8797 */
31 {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)},
32 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2,
33 USB_CLASS_VENDOR_SPEC,
34 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
35 /* 8897 */
36 {USB_DEVICE(USB8XXX_VID, USB8897_PID_1)},
37 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8897_PID_2,
4daffe35
AK		 38 USB_CLASS_VENDOR_SPEC,
39 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
40 { } /* Terminating entry */
41};
42
43MODULE_DEVICE_TABLE(usb, mwifiex_usb_table);
44
45static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size);
46
47/* This function handles received packet. Necessary action is taken based on
48 * cmd/event/data.
49 */
50static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
51 struct sk_buff *skb, u8 ep)
52{
53 struct device *dev = adapter->dev;
54 u32 recv_type;
55 __le32 tmp;
8311f0da 56 int ret;
4daffe35
AK		 57
58 if (adapter->hs_activated)
59 mwifiex_process_hs_config(adapter);
60
61 if (skb->len < INTF_HEADER_LEN) {
62 dev_err(dev, "%s: invalid skb->len\n", __func__);
63 return -1;
64 }
65
66 switch (ep) {
67 case MWIFIEX_USB_EP_CMD_EVENT:
68 dev_dbg(dev, "%s: EP_CMD_EVENT\n", __func__);
69 skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN);
70 recv_type = le32_to_cpu(tmp);
71 skb_pull(skb, INTF_HEADER_LEN);
72
73 switch (recv_type) {
74 case MWIFIEX_USB_TYPE_CMD:
75 if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) {
76 dev_err(dev, "CMD: skb->len too large\n");
8311f0da
AK		 77 ret = -1;
78 goto exit_restore_skb;
4daffe35
AK		 79 } else if (!adapter->curr_cmd) {
80 dev_dbg(dev, "CMD: no curr_cmd\n");
81 if (adapter->ps_state == PS_STATE_SLEEP_CFM) {
82 mwifiex_process_sleep_confirm_resp(
83 adapter, skb->data,
84 skb->len);
8311f0da
AK		 85 ret = 0;
86 goto exit_restore_skb;
4daffe35 87 }
8311f0da
AK		 88 ret = -1;
89 goto exit_restore_skb;
4daffe35
AK		 90 }
91
92 adapter->curr_cmd->resp_skb = skb;
93 adapter->cmd_resp_received = true;
94 break;
95 case MWIFIEX_USB_TYPE_EVENT:
96 if (skb->len < sizeof(u32)) {
97 dev_err(dev, "EVENT: skb->len too small\n");
8311f0da
AK		 98 ret = -1;
99 goto exit_restore_skb;
4daffe35
AK		 100 }
101 skb_copy_from_linear_data(skb, &tmp, sizeof(u32));
102 adapter->event_cause = le32_to_cpu(tmp);
4daffe35
AK		 103 dev_dbg(dev, "event_cause %#x\n", adapter->event_cause);
104
105 if (skb->len > MAX_EVENT_SIZE) {
106 dev_err(dev, "EVENT: event body too large\n");
8311f0da
AK		 107 ret = -1;
108 goto exit_restore_skb;
4daffe35
AK		 109 }
110
e80c81dc
AK		 111 memcpy(adapter->event_body, skb->data +
112 MWIFIEX_EVENT_HEADER_LEN, skb->len);
113
4daffe35
AK		 114 adapter->event_received = true;
115 adapter->event_skb = skb;
116 break;
117 default:
118 dev_err(dev, "unknown recv_type %#x\n", recv_type);
119 return -1;
120 }
121 break;
122 case MWIFIEX_USB_EP_DATA:
123 dev_dbg(dev, "%s: EP_DATA\n", __func__);
124 if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) {
125 dev_err(dev, "DATA: skb->len too large\n");
126 return -1;
127 }
128 skb_queue_tail(&adapter->usb_rx_data_q, skb);
129 adapter->data_received = true;
130 break;
131 default:
132 dev_err(dev, "%s: unknown endport %#x\n", __func__, ep);
133 return -1;
134 }
135
136 return -EINPROGRESS;
8311f0da
AK		 137
138exit_restore_skb:
139 /* The buffer will be reused for further cmds/events */
140 skb_push(skb, INTF_HEADER_LEN);
141
142 return ret;
4daffe35
AK		 143}
144
145static void mwifiex_usb_rx_complete(struct urb *urb)
146{
147 struct urb_context *context = (struct urb_context *)urb->context;
148 struct mwifiex_adapter *adapter = context->adapter;
149 struct sk_buff *skb = context->skb;
150 struct usb_card_rec *card;
151 int recv_length = urb->actual_length;
152 int size, status;
153
154 if (!adapter || !adapter->card) {
155 pr_err("mwifiex adapter or card structure is not valid\n");
156 return;
157 }
158
159 card = (struct usb_card_rec *)adapter->card;
160 if (card->rx_cmd_ep == context->ep)
161 atomic_dec(&card->rx_cmd_urb_pending);
162 else
163 atomic_dec(&card->rx_data_urb_pending);
164
165 if (recv_length) {
166 if (urb->status || (adapter->surprise_removed)) {
167 dev_err(adapter->dev,
168 "URB status is failed: %d\n", urb->status);
169 /* Do not free skb in case of command ep */
170 if (card->rx_cmd_ep != context->ep)
171 dev_kfree_skb_any(skb);
172 goto setup_for_next;
173 }
174 if (skb->len > recv_length)
175 skb_trim(skb, recv_length);
176 else
177 skb_put(skb, recv_length - skb->len);
178
179 atomic_inc(&adapter->rx_pending);
180 status = mwifiex_usb_recv(adapter, skb, context->ep);
181
182 dev_dbg(adapter->dev, "info: recv_length=%d, status=%d\n",
183 recv_length, status);
184 if (status == -EINPROGRESS) {
185 queue_work(adapter->workqueue, &adapter->main_work);
186
187 /* urb for data_ep is re-submitted now;
188 * urb for cmd_ep will be re-submitted in callback
189 * mwifiex_usb_recv_complete
190 */
191 if (card->rx_cmd_ep == context->ep)
192 return;
193 } else {
194 atomic_dec(&adapter->rx_pending);
195 if (status == -1)
196 dev_err(adapter->dev,
197 "received data processing failed!\n");
198
199 /* Do not free skb in case of command ep */
200 if (card->rx_cmd_ep != context->ep)
201 dev_kfree_skb_any(skb);
202 }
203 } else if (urb->status) {
204 if (!adapter->is_suspended) {
205 dev_warn(adapter->dev,
206 "Card is removed: %d\n", urb->status);
207 adapter->surprise_removed = true;
208 }
209 dev_kfree_skb_any(skb);
210 return;
211 } else {
212 /* Do not free skb in case of command ep */
213 if (card->rx_cmd_ep != context->ep)
214 dev_kfree_skb_any(skb);
215
216 /* fall through setup_for_next */
217 }
218
219setup_for_next:
220 if (card->rx_cmd_ep == context->ep)
221 size = MWIFIEX_RX_CMD_BUF_SIZE;
222 else
223 size = MWIFIEX_RX_DATA_BUF_SIZE;
224
225 mwifiex_usb_submit_rx_urb(context, size);
226
227 return;
228}
229
230static void mwifiex_usb_tx_complete(struct urb *urb)
231{
232 struct urb_context *context = (struct urb_context *)(urb->context);
233 struct mwifiex_adapter *adapter = context->adapter;
234 struct usb_card_rec *card = adapter->card;
235
236 dev_dbg(adapter->dev, "%s: status: %d\n", __func__, urb->status);
237
238 if (context->ep == card->tx_cmd_ep) {
239 dev_dbg(adapter->dev, "%s: CMD\n", __func__);
240 atomic_dec(&card->tx_cmd_urb_pending);
241 adapter->cmd_sent = false;
242 } else {
243 dev_dbg(adapter->dev, "%s: DATA\n", __func__);
244 atomic_dec(&card->tx_data_urb_pending);
47411a06 245 mwifiex_write_data_complete(adapter, context->skb, 0,
4daffe35
AK		 246 urb->status ? -1 : 0);
247 }
248
249 queue_work(adapter->workqueue, &adapter->main_work);
250
251 return;
252}
253
254static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size)
255{
256 struct mwifiex_adapter *adapter = ctx->adapter;
257 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
258
259 if (card->rx_cmd_ep != ctx->ep) {
260 ctx->skb = dev_alloc_skb(size);
261 if (!ctx->skb) {
262 dev_err(adapter->dev,
263 "%s: dev_alloc_skb failed\n", __func__);
264 return -ENOMEM;
265 }
266 }
267
268 usb_fill_bulk_urb(ctx->urb, card->udev,
269 usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data,
270 size, mwifiex_usb_rx_complete, (void *)ctx);
271
272 if (card->rx_cmd_ep == ctx->ep)
273 atomic_inc(&card->rx_cmd_urb_pending);
274 else
275 atomic_inc(&card->rx_data_urb_pending);
276
277 if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) {
278 dev_err(adapter->dev, "usb_submit_urb failed\n");
279 dev_kfree_skb_any(ctx->skb);
280 ctx->skb = NULL;
281
282 if (card->rx_cmd_ep == ctx->ep)
283 atomic_dec(&card->rx_cmd_urb_pending);
284 else
285 atomic_dec(&card->rx_data_urb_pending);
286
287 return -1;
288 }
289
290 return 0;
291}
292
293static void mwifiex_usb_free(struct usb_card_rec *card)
294{
295 int i;
296
297 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
298 usb_kill_urb(card->rx_cmd.urb);
299
300 usb_free_urb(card->rx_cmd.urb);
301 card->rx_cmd.urb = NULL;
302
303 if (atomic_read(&card->rx_data_urb_pending))
304 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
305 if (card->rx_data_list[i].urb)
306 usb_kill_urb(card->rx_data_list[i].urb);
307
308 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
309 usb_free_urb(card->rx_data_list[i].urb);
310 card->rx_data_list[i].urb = NULL;
311 }
312
313 for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
314 usb_free_urb(card->tx_data_list[i].urb);
315 card->tx_data_list[i].urb = NULL;
316 }
317
318 usb_free_urb(card->tx_cmd.urb);
319 card->tx_cmd.urb = NULL;
320
321 return;
322}
323
324/* This function probes an mwifiex device and registers it. It allocates
325 * the card structure, initiates the device registration and initialization
326 * procedure by adding a logical interface.
327 */
328static int mwifiex_usb_probe(struct usb_interface *intf,
329 const struct usb_device_id *id)
330{
331 struct usb_device *udev = interface_to_usbdev(intf);
332 struct usb_host_interface *iface_desc = intf->cur_altsetting;
333 struct usb_endpoint_descriptor *epd;
334 int ret, i;
335 struct usb_card_rec *card;
336 u16 id_vendor, id_product, bcd_device, bcd_usb;
337
338 card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
339 if (!card)
340 return -ENOMEM;
341
342 id_vendor = le16_to_cpu(udev->descriptor.idVendor);
343 id_product = le16_to_cpu(udev->descriptor.idProduct);
344 bcd_device = le16_to_cpu(udev->descriptor.bcdDevice);
345 bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB);
346 pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n",
347 id_vendor, id_product, bcd_device);
348
349 /* PID_1 is used for firmware downloading only */
68458ded
YAP		 350 switch (id_product) {
351 case USB8797_PID_1:
352 case USB8897_PID_1:
353 card->usb_boot_state = USB8XXX_FW_DNLD;
354 break;
355 case USB8797_PID_2:
356 case USB8897_PID_2:
357 card->usb_boot_state = USB8XXX_FW_READY;
358 break;
359 default:
360 pr_warning("unknown id_product %#x\n", id_product);
361 card->usb_boot_state = USB8XXX_FW_DNLD;
362 break;
363 }
4daffe35
AK		 364
365 card->udev = udev;
366 card->intf = intf;
367
69797838 368 pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n",
4daffe35
AK		 369 udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass,
370 udev->descriptor.bDeviceSubClass,
371 udev->descriptor.bDeviceProtocol);
372
373 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
374 epd = &iface_desc->endpoint[i].desc;
375 if (usb_endpoint_dir_in(epd) &&
376 usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
377 usb_endpoint_xfer_bulk(epd)) {
378 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
379 le16_to_cpu(epd->wMaxPacketSize),
380 epd->bEndpointAddress);
381 card->rx_cmd_ep = usb_endpoint_num(epd);
382 atomic_set(&card->rx_cmd_urb_pending, 0);
383 }
384 if (usb_endpoint_dir_in(epd) &&
385 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
386 usb_endpoint_xfer_bulk(epd)) {
387 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
388 le16_to_cpu(epd->wMaxPacketSize),
389 epd->bEndpointAddress);
390 card->rx_data_ep = usb_endpoint_num(epd);
391 atomic_set(&card->rx_data_urb_pending, 0);
392 }
393 if (usb_endpoint_dir_out(epd) &&
394 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
395 usb_endpoint_xfer_bulk(epd)) {
396 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
397 le16_to_cpu(epd->wMaxPacketSize),
398 epd->bEndpointAddress);
399 card->tx_data_ep = usb_endpoint_num(epd);
400 atomic_set(&card->tx_data_urb_pending, 0);
401 }
402 if (usb_endpoint_dir_out(epd) &&
403 usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
404 usb_endpoint_xfer_bulk(epd)) {
405 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
406 le16_to_cpu(epd->wMaxPacketSize),
407 epd->bEndpointAddress);
408 card->tx_cmd_ep = usb_endpoint_num(epd);
409 atomic_set(&card->tx_cmd_urb_pending, 0);
410 card->bulk_out_maxpktsize =
411 le16_to_cpu(epd->wMaxPacketSize);
412 }
413 }
414
415 usb_set_intfdata(intf, card);
416
417 ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops,
418 MWIFIEX_USB);
419 if (ret) {
420 pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
421 usb_reset_device(udev);
422 kfree(card);
423 return ret;
424 }
425
426 usb_get_dev(udev);
427
428 return 0;
429}
430
431/* Kernel needs to suspend all functions separately. Therefore all
432 * registered functions must have drivers with suspend and resume
433 * methods. Failing that the kernel simply removes the whole card.
434 *
435 * If already not suspended, this function allocates and sends a
436 * 'host sleep activate' request to the firmware and turns off the traffic.
437 */
438static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
439{
440 struct usb_card_rec *card = usb_get_intfdata(intf);
441 struct mwifiex_adapter *adapter;
442 int i;
443
444 if (!card || !card->adapter) {
445 pr_err("%s: card or card->adapter is NULL\n", __func__);
446 return 0;
447 }
448 adapter = card->adapter;
449
450 if (unlikely(adapter->is_suspended))
451 dev_warn(adapter->dev, "Device already suspended\n");
452
453 mwifiex_enable_hs(adapter);
454
455 /* 'is_suspended' flag indicates device is suspended.
456 * It must be set here before the usb_kill_urb() calls. Reason
457 * is in the complete handlers, urb->status(= -ENOENT) and
458 * this flag is used in combination to distinguish between a
459 * 'suspended' state and a 'disconnect' one.
460 */
461 adapter->is_suspended = true;
462
4daffe35
AK		 463 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
464 usb_kill_urb(card->rx_cmd.urb);
465
466 if (atomic_read(&card->rx_data_urb_pending))
467 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
468 if (card->rx_data_list[i].urb)
469 usb_kill_urb(card->rx_data_list[i].urb);
470
471 for (i = 0; i < MWIFIEX_TX_DATA_URB; i++)
472 if (card->tx_data_list[i].urb)
473 usb_kill_urb(card->tx_data_list[i].urb);
474
475 if (card->tx_cmd.urb)
476 usb_kill_urb(card->tx_cmd.urb);
477
478 return 0;
479}
480
481/* Kernel needs to suspend all functions separately. Therefore all
482 * registered functions must have drivers with suspend and resume
483 * methods. Failing that the kernel simply removes the whole card.
484 *
485 * If already not resumed, this function turns on the traffic and
486 * sends a 'host sleep cancel' request to the firmware.
487 */
488static int mwifiex_usb_resume(struct usb_interface *intf)
489{
490 struct usb_card_rec *card = usb_get_intfdata(intf);
491 struct mwifiex_adapter *adapter;
492 int i;
493
494 if (!card || !card->adapter) {
495 pr_err("%s: card or card->adapter is NULL\n", __func__);
496 return 0;
497 }
498 adapter = card->adapter;
499
500 if (unlikely(!adapter->is_suspended)) {
501 dev_warn(adapter->dev, "Device already resumed\n");
502 return 0;
503 }
504
505 /* Indicate device resumed. The netdev queue will be resumed only
506 * after the urbs have been re-submitted
507 */
508 adapter->is_suspended = false;
509
510 if (!atomic_read(&card->rx_data_urb_pending))
511 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
512 mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
513 MWIFIEX_RX_DATA_BUF_SIZE);
514
515 if (!atomic_read(&card->rx_cmd_urb_pending)) {
516 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
517 if (card->rx_cmd.skb)
518 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
519 MWIFIEX_RX_CMD_BUF_SIZE);
520 }
521
4daffe35
AK		 522 /* Disable Host Sleep */
523 if (adapter->hs_activated)
524 mwifiex_cancel_hs(mwifiex_get_priv(adapter,
525 MWIFIEX_BSS_ROLE_ANY),
526 MWIFIEX_ASYNC_CMD);
527
4daffe35
AK		 528 return 0;
529}
530
531static void mwifiex_usb_disconnect(struct usb_interface *intf)
532{
533 struct usb_card_rec *card = usb_get_intfdata(intf);
4daffe35 534
353d2a69
UR		 535 if (!card) {
536 pr_err("%s: card is NULL\n", __func__);
4daffe35
AK		 537 return;
538 }
539
4daffe35
AK		 540 mwifiex_usb_free(card);
541
353d2a69
UR		 542 if (card->adapter) {
543 struct mwifiex_adapter *adapter = card->adapter;
544
545 if (!adapter->priv_num)
546 return;
547
548 dev_dbg(adapter->dev, "%s: removing card\n", __func__);
549 mwifiex_remove_card(adapter, &add_remove_card_sem);
550 }
4daffe35
AK		 551
552 usb_set_intfdata(intf, NULL);
553 usb_put_dev(interface_to_usbdev(intf));
554 kfree(card);
353d2a69 555 usb_card = NULL;
4daffe35
AK		 556
557 return;
558}
559
560static struct usb_driver mwifiex_usb_driver = {
e4ceb0f4 561 .name = "mwifiex_usb",
4daffe35
AK		 562 .probe = mwifiex_usb_probe,
563 .disconnect = mwifiex_usb_disconnect,
564 .id_table = mwifiex_usb_table,
565 .suspend = mwifiex_usb_suspend,
566 .resume = mwifiex_usb_resume,
4daffe35
AK		 567};
568
569static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
570{
571 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
572 int i;
573
574 card->tx_cmd.adapter = adapter;
575 card->tx_cmd.ep = card->tx_cmd_ep;
576
577 card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
578 if (!card->tx_cmd.urb) {
579 dev_err(adapter->dev, "tx_cmd.urb allocation failed\n");
580 return -ENOMEM;
581 }
582
583 card->tx_data_ix = 0;
584
585 for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
586 card->tx_data_list[i].adapter = adapter;
587 card->tx_data_list[i].ep = card->tx_data_ep;
588
589 card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
590 if (!card->tx_data_list[i].urb) {
591 dev_err(adapter->dev,
592 "tx_data_list[] urb allocation failed\n");
593 return -ENOMEM;
594 }
595 }
596
597 return 0;
598}
599
600static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
601{
602 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
603 int i;
604
605 card->rx_cmd.adapter = adapter;
606 card->rx_cmd.ep = card->rx_cmd_ep;
607
608 card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
609 if (!card->rx_cmd.urb) {
610 dev_err(adapter->dev, "rx_cmd.urb allocation failed\n");
611 return -ENOMEM;
612 }
613
614 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
615 if (!card->rx_cmd.skb) {
616 dev_err(adapter->dev, "rx_cmd.skb allocation failed\n");
617 return -ENOMEM;
618 }
619
620 if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE))
621 return -1;
622
623 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
624 card->rx_data_list[i].adapter = adapter;
625 card->rx_data_list[i].ep = card->rx_data_ep;
626
627 card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
628 if (!card->rx_data_list[i].urb) {
629 dev_err(adapter->dev,
630 "rx_data_list[] urb allocation failed\n");
631 return -1;
632 }
633 if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
634 MWIFIEX_RX_DATA_BUF_SIZE))
635 return -1;
636 }
637
638 return 0;
639}
640
641static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
642 u32 *len, u8 ep, u32 timeout)
643{
644 struct usb_card_rec *card = adapter->card;
645 int actual_length, ret;
646
647 if (!(*len % card->bulk_out_maxpktsize))
648 (*len)++;
649
650 /* Send the data block */
651 ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf,
652 *len, &actual_length, timeout);
653 if (ret) {
654 dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret);
5b2e2ecc 655 return ret;
4daffe35
AK		 656 }
657
658 *len = actual_length;
659
660 return ret;
661}
662
663static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
664 u32 *len, u8 ep, u32 timeout)
665{
666 struct usb_card_rec *card = adapter->card;
667 int actual_length, ret;
668
669 /* Receive the data response */
670 ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf,
671 *len, &actual_length, timeout);
672 if (ret) {
673 dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret);
5b2e2ecc 674 return ret;
4daffe35
AK		 675 }
676
677 *len = actual_length;
678
679 return ret;
680}
681
682/* This function write a command/data packet to card. */
683static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep,
684 struct sk_buff *skb,
685 struct mwifiex_tx_param *tx_param)
686{
687 struct usb_card_rec *card = adapter->card;
688 struct urb_context *context;
689 u8 *data = (u8 *)skb->data;
690 struct urb *tx_urb;
691
692 if (adapter->is_suspended) {
693 dev_err(adapter->dev,
694 "%s: not allowed while suspended\n", __func__);
695 return -1;
696 }
697
698 if (adapter->surprise_removed) {
699 dev_err(adapter->dev, "%s: device removed\n", __func__);
700 return -1;
701 }
702
703 if (ep == card->tx_data_ep &&
704 atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) {
705 return -EBUSY;
706 }
707
708 dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep);
709
710 if (ep == card->tx_cmd_ep) {
711 context = &card->tx_cmd;
712 } else {
713 if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB)
714 card->tx_data_ix = 0;
715 context = &card->tx_data_list[card->tx_data_ix++];
716 }
717
718 context->adapter = adapter;
719 context->ep = ep;
720 context->skb = skb;
721 tx_urb = context->urb;
722
723 usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep),
724 data, skb->len, mwifiex_usb_tx_complete,
725 (void *)context);
726
727 tx_urb->transfer_flags |= URB_ZERO_PACKET;
728
729 if (ep == card->tx_cmd_ep)
730 atomic_inc(&card->tx_cmd_urb_pending);
731 else
732 atomic_inc(&card->tx_data_urb_pending);
733
734 if (usb_submit_urb(tx_urb, GFP_ATOMIC)) {
735 dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__);
736 if (ep == card->tx_cmd_ep) {
737 atomic_dec(&card->tx_cmd_urb_pending);
738 } else {
739 atomic_dec(&card->tx_data_urb_pending);
740 if (card->tx_data_ix)
741 card->tx_data_ix--;
742 else
743 card->tx_data_ix = MWIFIEX_TX_DATA_URB;
744 }
745
746 return -1;
747 } else {
748 if (ep == card->tx_data_ep &&
749 atomic_read(&card->tx_data_urb_pending) ==
750 MWIFIEX_TX_DATA_URB)
751 return -ENOSR;
752 }
753
754 return -EINPROGRESS;
755}
756
757/* This function register usb device and initialize parameter. */
758static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
759{
760 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
761
762 card->adapter = adapter;
763 adapter->dev = &card->udev->dev;
353d2a69 764 usb_card = card;
4daffe35 765
68458ded
YAP		 766 switch (le16_to_cpu(card->udev->descriptor.idProduct)) {
767 case USB8897_PID_1:
768 case USB8897_PID_2:
828cf222 769 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K;
68458ded
YAP		 770 strcpy(adapter->fw_name, USB8897_DEFAULT_FW_NAME);
771 break;
772 case USB8797_PID_1:
773 case USB8797_PID_2:
774 default:
828cf222 775 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
68458ded
YAP		 776 strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME);
777 break;
778 }
779
4daffe35
AK		 780 return 0;
781}
782
2739a95d
AK		 783static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
784{
785 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
786
353d2a69 787 card->adapter = NULL;
2739a95d
AK		 788}
789
4daffe35
AK		 790static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
791 struct mwifiex_fw_image *fw)
792{
793 int ret = 0;
794 u8 *firmware = fw->fw_buf, *recv_buff;
68458ded 795 u32 retries = USB8XXX_FW_MAX_RETRY, dlen;
4daffe35
AK		 796 u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0;
797 struct fw_data *fwdata;
798 struct fw_sync_header sync_fw;
799 u8 check_winner = 1;
800
801 if (!firmware) {
802 dev_err(adapter->dev,
803 "No firmware image found! Terminating download\n");
804 ret = -1;
805 goto fw_exit;
806 }
807
808 /* Allocate memory for transmit */
809 fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL);
810 if (!fwdata)
811 goto fw_exit;
812
813 /* Allocate memory for receive */
814 recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL);
815 if (!recv_buff)
816 goto cleanup;
817
818 do {
819 /* Send pseudo data to check winner status first */
820 if (check_winner) {
821 memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header));
822 dlen = 0;
823 } else {
824 /* copy the header of the fw_data to get the length */
fc40ca92
SL		 825 memcpy(&fwdata->fw_hdr, &firmware[tlen],
826 sizeof(struct fw_header));
4daffe35
AK		 827
828 dlen = le32_to_cpu(fwdata->fw_hdr.data_len);
829 dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd);
830 tlen += sizeof(struct fw_header);
831
fc40ca92 832 memcpy(fwdata->data, &firmware[tlen], dlen);
4daffe35
AK		 833
834 fwdata->seq_num = cpu_to_le32(fw_seqnum);
835 tlen += dlen;
836 }
837
838 /* If the send/receive fails or CRC occurs then retry */
839 while (retries--) {
840 u8 *buf = (u8 *)fwdata;
841 u32 len = FW_DATA_XMIT_SIZE;
842
843 /* send the firmware block */
844 ret = mwifiex_write_data_sync(adapter, buf, &len,
845 MWIFIEX_USB_EP_CMD_EVENT,
846 MWIFIEX_USB_TIMEOUT);
847 if (ret) {
848 dev_err(adapter->dev,
849 "write_data_sync: failed: %d\n", ret);
850 continue;
851 }
852
853 buf = recv_buff;
854 len = FW_DNLD_RX_BUF_SIZE;
855
856 /* Receive the firmware block response */
857 ret = mwifiex_read_data_sync(adapter, buf, &len,
858 MWIFIEX_USB_EP_CMD_EVENT,
859 MWIFIEX_USB_TIMEOUT);
860 if (ret) {
861 dev_err(adapter->dev,
862 "read_data_sync: failed: %d\n", ret);
863 continue;
864 }
865
866 memcpy(&sync_fw, recv_buff,
867 sizeof(struct fw_sync_header));
868
869 /* check 1st firmware block resp for highest bit set */
870 if (check_winner) {
871 if (le32_to_cpu(sync_fw.cmd) & 0x80000000) {
872 dev_warn(adapter->dev,
873 "USB is not the winner %#x\n",
874 sync_fw.cmd);
875
876 /* returning success */
877 ret = 0;
878 goto cleanup;
879 }
880
881 dev_dbg(adapter->dev,
882 "USB is the winner, start to download FW\n");
883
884 check_winner = 0;
885 break;
886 }
887
888 /* check the firmware block response for CRC errors */
889 if (sync_fw.cmd) {
890 dev_err(adapter->dev,
891 "FW received block with CRC %#x\n",
892 sync_fw.cmd);
893 ret = -1;
894 continue;
895 }
896
68458ded 897 retries = USB8XXX_FW_MAX_RETRY;
4daffe35
AK		 898 break;
899 }
900 fw_seqnum++;
901 } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries);
902
903cleanup:
904 dev_dbg(adapter->dev, "%s: %d bytes downloaded\n", __func__, tlen);
905
906 kfree(recv_buff);
907 kfree(fwdata);
908
909 if (retries)
910 ret = 0;
911fw_exit:
912 return ret;
913}
914
915static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
916 struct mwifiex_fw_image *fw)
917{
918 int ret;
919 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
920
68458ded 921 if (card->usb_boot_state == USB8XXX_FW_DNLD) {
4daffe35
AK		 922 ret = mwifiex_prog_fw_w_helper(adapter, fw);
923 if (ret)
924 return -1;
925
926 /* Boot state changes after successful firmware download */
68458ded 927 if (card->usb_boot_state == USB8XXX_FW_DNLD)
4daffe35
AK		 928 return -1;
929 }
930
931 ret = mwifiex_usb_rx_init(adapter);
932 if (!ret)
933 ret = mwifiex_usb_tx_init(adapter);
934
935 return ret;
936}
937
938static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep)
939{
940 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
941
942 skb_push(card->rx_cmd.skb, INTF_HEADER_LEN);
943 if ((ep == card->rx_cmd_ep) &&
944 (!atomic_read(&card->rx_cmd_urb_pending)))
945 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
946 MWIFIEX_RX_CMD_BUF_SIZE);
947
948 return;
949}
950
951static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter,
952 struct sk_buff *skb)
953{
954 atomic_dec(&adapter->rx_pending);
955 mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT);
956
957 return 0;
958}
959
ca8d6dfc 960static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter)
4daffe35
AK		 961{
962 atomic_dec(&adapter->rx_pending);
4daffe35
AK		 963
964 return 0;
965}
966
967/* This function wakes up the card. */
968static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
969{
970 /* Simulation of HS_AWAKE event */
971 adapter->pm_wakeup_fw_try = false;
972 adapter->pm_wakeup_card_req = false;
973 adapter->ps_state = PS_STATE_AWAKE;
974
975 return 0;
976}
977
978static struct mwifiex_if_ops usb_ops = {
979 .register_dev = mwifiex_register_dev,
2739a95d 980 .unregister_dev = mwifiex_unregister_dev,
4daffe35
AK		 981 .wakeup = mwifiex_pm_wakeup_card,
982 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
983
984 /* USB specific */
985 .dnld_fw = mwifiex_usb_dnld_fw,
986 .cmdrsp_complete = mwifiex_usb_cmd_event_complete,
987 .event_complete = mwifiex_usb_cmd_event_complete,
988 .data_complete = mwifiex_usb_data_complete,
989 .host_to_card = mwifiex_usb_host_to_card,
990};
991
992/* This function initializes the USB driver module.
993 *
994 * This initiates the semaphore and registers the device with
995 * USB bus.
996 */
997static int mwifiex_usb_init_module(void)
998{
999 int ret;
1000
1001 pr_debug("Marvell USB8797 Driver\n");
1002
1003 sema_init(&add_remove_card_sem, 1);
1004
1005 ret = usb_register(&mwifiex_usb_driver);
1006 if (ret)
1007 pr_err("Driver register failed!\n");
1008 else
1009 pr_debug("info: Driver registered successfully!\n");
1010
1011 return ret;
1012}
1013
1014/* This function cleans up the USB driver.
1015 *
1016 * The following major steps are followed in .disconnect for cleanup:
1017 * - Resume the device if its suspended
1018 * - Disconnect the device if connected
1019 * - Shutdown the firmware
1020 * - Unregister the device from USB bus.
1021 */
1022static void mwifiex_usb_cleanup_module(void)
1023{
1024 if (!down_interruptible(&add_remove_card_sem))
1025 up(&add_remove_card_sem);
1026
353d2a69 1027 if (usb_card && usb_card->adapter) {
027d3307 1028 struct mwifiex_adapter *adapter = usb_card->adapter;
027d3307
AK		 1029
1030 /* In case driver is removed when asynchronous FW downloading is
1031 * in progress
1032 */
1033 wait_for_completion(&adapter->fw_load);
1034
1035#ifdef CONFIG_PM
1036 if (adapter->is_suspended)
1037 mwifiex_usb_resume(usb_card->intf);
1038#endif
848819f4
AK		 1039
1040 mwifiex_deauthenticate_all(adapter);
027d3307
AK		 1041
1042 mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
1043 MWIFIEX_BSS_ROLE_ANY),
1044 MWIFIEX_FUNC_SHUTDOWN);
1045 }
4daffe35
AK		 1046
1047 usb_deregister(&mwifiex_usb_driver);
1048}
1049
1050module_init(mwifiex_usb_init_module);
1051module_exit(mwifiex_usb_cleanup_module);
1052
1053MODULE_AUTHOR("Marvell International Ltd.");
1054MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION);
1055MODULE_VERSION(USB_VERSION);
1056MODULE_LICENSE("GPL v2");
68458ded
YAP		 1057MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME);
1058MODULE_FIRMWARE(USB8897_DEFAULT_FW_NAME);
Linux kernel - Deliverables
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