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net: use kfree_skb_list() helper in more places
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / mwifiex / usb.c
CommitLineData
4daffe35
AK		 1/*
2 * Marvell Wireless LAN device driver: USB specific handling
3 *
65da33f5 4 * Copyright (C) 2012-2014, Marvell International Ltd.
4daffe35
AK		 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
3fffd7c1 25static u8 user_rmmod;
4daffe35
AK		 26static struct mwifiex_if_ops usb_ops;
27static struct semaphore add_remove_card_sem;
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;
c0dbba66 462 adapter->hs_enabling = false;
4daffe35 463
4daffe35
AK		 464 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
465 usb_kill_urb(card->rx_cmd.urb);
466
467 if (atomic_read(&card->rx_data_urb_pending))
468 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
469 if (card->rx_data_list[i].urb)
470 usb_kill_urb(card->rx_data_list[i].urb);
471
472 for (i = 0; i < MWIFIEX_TX_DATA_URB; i++)
473 if (card->tx_data_list[i].urb)
474 usb_kill_urb(card->tx_data_list[i].urb);
475
476 if (card->tx_cmd.urb)
477 usb_kill_urb(card->tx_cmd.urb);
478
479 return 0;
480}
481
482/* Kernel needs to suspend all functions separately. Therefore all
483 * registered functions must have drivers with suspend and resume
484 * methods. Failing that the kernel simply removes the whole card.
485 *
486 * If already not resumed, this function turns on the traffic and
487 * sends a 'host sleep cancel' request to the firmware.
488 */
489static int mwifiex_usb_resume(struct usb_interface *intf)
490{
491 struct usb_card_rec *card = usb_get_intfdata(intf);
492 struct mwifiex_adapter *adapter;
493 int i;
494
495 if (!card || !card->adapter) {
496 pr_err("%s: card or card->adapter is NULL\n", __func__);
497 return 0;
498 }
499 adapter = card->adapter;
500
501 if (unlikely(!adapter->is_suspended)) {
502 dev_warn(adapter->dev, "Device already resumed\n");
503 return 0;
504 }
505
506 /* Indicate device resumed. The netdev queue will be resumed only
507 * after the urbs have been re-submitted
508 */
509 adapter->is_suspended = false;
510
511 if (!atomic_read(&card->rx_data_urb_pending))
512 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
513 mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
514 MWIFIEX_RX_DATA_BUF_SIZE);
515
516 if (!atomic_read(&card->rx_cmd_urb_pending)) {
517 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
518 if (card->rx_cmd.skb)
519 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
520 MWIFIEX_RX_CMD_BUF_SIZE);
521 }
522
4daffe35
AK		 523 /* Disable Host Sleep */
524 if (adapter->hs_activated)
525 mwifiex_cancel_hs(mwifiex_get_priv(adapter,
526 MWIFIEX_BSS_ROLE_ANY),
527 MWIFIEX_ASYNC_CMD);
528
4daffe35
AK		 529 return 0;
530}
531
532static void mwifiex_usb_disconnect(struct usb_interface *intf)
533{
534 struct usb_card_rec *card = usb_get_intfdata(intf);
3fffd7c1 535 struct mwifiex_adapter *adapter;
4daffe35 536
3fffd7c1
AK		 537 if (!card || !card->adapter) {
538 pr_err("%s: card or card->adapter is NULL\n", __func__);
4daffe35
AK		 539 return;
540 }
541
3fffd7c1
AK		 542 adapter = card->adapter;
543 if (!adapter->priv_num)
544 return;
4daffe35 545
3fffd7c1
AK		 546 if (user_rmmod) {
547#ifdef CONFIG_PM
548 if (adapter->is_suspended)
549 mwifiex_usb_resume(intf);
550#endif
551
552 mwifiex_deauthenticate_all(adapter);
353d2a69 553
3fffd7c1
AK		 554 mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
555 MWIFIEX_BSS_ROLE_ANY),
556 MWIFIEX_FUNC_SHUTDOWN);
353d2a69 557 }
4daffe35 558
3fffd7c1
AK		 559 mwifiex_usb_free(card);
560
561 dev_dbg(adapter->dev, "%s: removing card\n", __func__);
562 mwifiex_remove_card(adapter, &add_remove_card_sem);
563
4daffe35
AK		 564 usb_set_intfdata(intf, NULL);
565 usb_put_dev(interface_to_usbdev(intf));
566 kfree(card);
567
568 return;
569}
570
571static struct usb_driver mwifiex_usb_driver = {
e4ceb0f4 572 .name = "mwifiex_usb",
4daffe35
AK		 573 .probe = mwifiex_usb_probe,
574 .disconnect = mwifiex_usb_disconnect,
575 .id_table = mwifiex_usb_table,
576 .suspend = mwifiex_usb_suspend,
577 .resume = mwifiex_usb_resume,
3fffd7c1 578 .soft_unbind = 1,
4daffe35
AK		 579};
580
581static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
582{
583 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
584 int i;
585
586 card->tx_cmd.adapter = adapter;
587 card->tx_cmd.ep = card->tx_cmd_ep;
588
589 card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
590 if (!card->tx_cmd.urb) {
591 dev_err(adapter->dev, "tx_cmd.urb allocation failed\n");
592 return -ENOMEM;
593 }
594
595 card->tx_data_ix = 0;
596
597 for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
598 card->tx_data_list[i].adapter = adapter;
599 card->tx_data_list[i].ep = card->tx_data_ep;
600
601 card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
602 if (!card->tx_data_list[i].urb) {
603 dev_err(adapter->dev,
604 "tx_data_list[] urb allocation failed\n");
605 return -ENOMEM;
606 }
607 }
608
609 return 0;
610}
611
612static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
613{
614 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
615 int i;
616
617 card->rx_cmd.adapter = adapter;
618 card->rx_cmd.ep = card->rx_cmd_ep;
619
620 card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
621 if (!card->rx_cmd.urb) {
622 dev_err(adapter->dev, "rx_cmd.urb allocation failed\n");
623 return -ENOMEM;
624 }
625
626 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
627 if (!card->rx_cmd.skb) {
628 dev_err(adapter->dev, "rx_cmd.skb allocation failed\n");
629 return -ENOMEM;
630 }
631
632 if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE))
633 return -1;
634
635 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
636 card->rx_data_list[i].adapter = adapter;
637 card->rx_data_list[i].ep = card->rx_data_ep;
638
639 card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
640 if (!card->rx_data_list[i].urb) {
641 dev_err(adapter->dev,
642 "rx_data_list[] urb allocation failed\n");
643 return -1;
644 }
645 if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
646 MWIFIEX_RX_DATA_BUF_SIZE))
647 return -1;
648 }
649
650 return 0;
651}
652
653static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
654 u32 *len, u8 ep, u32 timeout)
655{
656 struct usb_card_rec *card = adapter->card;
657 int actual_length, ret;
658
659 if (!(*len % card->bulk_out_maxpktsize))
660 (*len)++;
661
662 /* Send the data block */
663 ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf,
664 *len, &actual_length, timeout);
665 if (ret) {
666 dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret);
5b2e2ecc 667 return ret;
4daffe35
AK		 668 }
669
670 *len = actual_length;
671
672 return ret;
673}
674
675static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
676 u32 *len, u8 ep, u32 timeout)
677{
678 struct usb_card_rec *card = adapter->card;
679 int actual_length, ret;
680
681 /* Receive the data response */
682 ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf,
683 *len, &actual_length, timeout);
684 if (ret) {
685 dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret);
5b2e2ecc 686 return ret;
4daffe35
AK		 687 }
688
689 *len = actual_length;
690
691 return ret;
692}
693
694/* This function write a command/data packet to card. */
695static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep,
696 struct sk_buff *skb,
697 struct mwifiex_tx_param *tx_param)
698{
699 struct usb_card_rec *card = adapter->card;
700 struct urb_context *context;
701 u8 *data = (u8 *)skb->data;
702 struct urb *tx_urb;
703
704 if (adapter->is_suspended) {
705 dev_err(adapter->dev,
706 "%s: not allowed while suspended\n", __func__);
707 return -1;
708 }
709
710 if (adapter->surprise_removed) {
711 dev_err(adapter->dev, "%s: device removed\n", __func__);
712 return -1;
713 }
714
715 if (ep == card->tx_data_ep &&
716 atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) {
717 return -EBUSY;
718 }
719
720 dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep);
721
722 if (ep == card->tx_cmd_ep) {
723 context = &card->tx_cmd;
724 } else {
725 if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB)
726 card->tx_data_ix = 0;
727 context = &card->tx_data_list[card->tx_data_ix++];
728 }
729
730 context->adapter = adapter;
731 context->ep = ep;
732 context->skb = skb;
733 tx_urb = context->urb;
734
735 usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep),
736 data, skb->len, mwifiex_usb_tx_complete,
737 (void *)context);
738
739 tx_urb->transfer_flags |= URB_ZERO_PACKET;
740
741 if (ep == card->tx_cmd_ep)
742 atomic_inc(&card->tx_cmd_urb_pending);
743 else
744 atomic_inc(&card->tx_data_urb_pending);
745
746 if (usb_submit_urb(tx_urb, GFP_ATOMIC)) {
747 dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__);
748 if (ep == card->tx_cmd_ep) {
749 atomic_dec(&card->tx_cmd_urb_pending);
750 } else {
751 atomic_dec(&card->tx_data_urb_pending);
752 if (card->tx_data_ix)
753 card->tx_data_ix--;
754 else
755 card->tx_data_ix = MWIFIEX_TX_DATA_URB;
756 }
757
758 return -1;
759 } else {
760 if (ep == card->tx_data_ep &&
761 atomic_read(&card->tx_data_urb_pending) ==
762 MWIFIEX_TX_DATA_URB)
763 return -ENOSR;
764 }
765
766 return -EINPROGRESS;
767}
768
769/* This function register usb device and initialize parameter. */
770static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
771{
772 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
773
774 card->adapter = adapter;
775 adapter->dev = &card->udev->dev;
4daffe35 776
68458ded
YAP		 777 switch (le16_to_cpu(card->udev->descriptor.idProduct)) {
778 case USB8897_PID_1:
779 case USB8897_PID_2:
828cf222 780 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K;
68458ded
YAP		 781 strcpy(adapter->fw_name, USB8897_DEFAULT_FW_NAME);
782 break;
783 case USB8797_PID_1:
784 case USB8797_PID_2:
785 default:
828cf222 786 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
68458ded
YAP		 787 strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME);
788 break;
789 }
790
4daffe35
AK		 791 return 0;
792}
793
2739a95d
AK		 794static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
795{
796 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
797
353d2a69 798 card->adapter = NULL;
2739a95d
AK		 799}
800
4daffe35
AK		 801static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
802 struct mwifiex_fw_image *fw)
803{
804 int ret = 0;
805 u8 *firmware = fw->fw_buf, *recv_buff;
68458ded 806 u32 retries = USB8XXX_FW_MAX_RETRY, dlen;
4daffe35
AK		 807 u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0;
808 struct fw_data *fwdata;
809 struct fw_sync_header sync_fw;
810 u8 check_winner = 1;
811
812 if (!firmware) {
813 dev_err(adapter->dev,
814 "No firmware image found! Terminating download\n");
815 ret = -1;
816 goto fw_exit;
817 }
818
819 /* Allocate memory for transmit */
820 fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL);
821 if (!fwdata)
822 goto fw_exit;
823
824 /* Allocate memory for receive */
825 recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL);
826 if (!recv_buff)
827 goto cleanup;
828
829 do {
830 /* Send pseudo data to check winner status first */
831 if (check_winner) {
832 memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header));
833 dlen = 0;
834 } else {
835 /* copy the header of the fw_data to get the length */
fc40ca92
SL		 836 memcpy(&fwdata->fw_hdr, &firmware[tlen],
837 sizeof(struct fw_header));
4daffe35
AK		 838
839 dlen = le32_to_cpu(fwdata->fw_hdr.data_len);
840 dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd);
841 tlen += sizeof(struct fw_header);
842
fc40ca92 843 memcpy(fwdata->data, &firmware[tlen], dlen);
4daffe35
AK		 844
845 fwdata->seq_num = cpu_to_le32(fw_seqnum);
846 tlen += dlen;
847 }
848
849 /* If the send/receive fails or CRC occurs then retry */
850 while (retries--) {
851 u8 *buf = (u8 *)fwdata;
852 u32 len = FW_DATA_XMIT_SIZE;
853
854 /* send the firmware block */
855 ret = mwifiex_write_data_sync(adapter, buf, &len,
856 MWIFIEX_USB_EP_CMD_EVENT,
857 MWIFIEX_USB_TIMEOUT);
858 if (ret) {
859 dev_err(adapter->dev,
860 "write_data_sync: failed: %d\n", ret);
861 continue;
862 }
863
864 buf = recv_buff;
865 len = FW_DNLD_RX_BUF_SIZE;
866
867 /* Receive the firmware block response */
868 ret = mwifiex_read_data_sync(adapter, buf, &len,
869 MWIFIEX_USB_EP_CMD_EVENT,
870 MWIFIEX_USB_TIMEOUT);
871 if (ret) {
872 dev_err(adapter->dev,
873 "read_data_sync: failed: %d\n", ret);
874 continue;
875 }
876
877 memcpy(&sync_fw, recv_buff,
878 sizeof(struct fw_sync_header));
879
880 /* check 1st firmware block resp for highest bit set */
881 if (check_winner) {
882 if (le32_to_cpu(sync_fw.cmd) & 0x80000000) {
883 dev_warn(adapter->dev,
884 "USB is not the winner %#x\n",
885 sync_fw.cmd);
886
887 /* returning success */
888 ret = 0;
889 goto cleanup;
890 }
891
892 dev_dbg(adapter->dev,
893 "USB is the winner, start to download FW\n");
894
895 check_winner = 0;
896 break;
897 }
898
899 /* check the firmware block response for CRC errors */
900 if (sync_fw.cmd) {
901 dev_err(adapter->dev,
902 "FW received block with CRC %#x\n",
903 sync_fw.cmd);
904 ret = -1;
905 continue;
906 }
907
68458ded 908 retries = USB8XXX_FW_MAX_RETRY;
4daffe35
AK		 909 break;
910 }
911 fw_seqnum++;
912 } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries);
913
914cleanup:
915 dev_dbg(adapter->dev, "%s: %d bytes downloaded\n", __func__, tlen);
916
917 kfree(recv_buff);
918 kfree(fwdata);
919
920 if (retries)
921 ret = 0;
922fw_exit:
923 return ret;
924}
925
926static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
927 struct mwifiex_fw_image *fw)
928{
929 int ret;
930 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
931
68458ded 932 if (card->usb_boot_state == USB8XXX_FW_DNLD) {
4daffe35
AK		 933 ret = mwifiex_prog_fw_w_helper(adapter, fw);
934 if (ret)
935 return -1;
936
937 /* Boot state changes after successful firmware download */
68458ded 938 if (card->usb_boot_state == USB8XXX_FW_DNLD)
4daffe35
AK		 939 return -1;
940 }
941
942 ret = mwifiex_usb_rx_init(adapter);
943 if (!ret)
944 ret = mwifiex_usb_tx_init(adapter);
945
946 return ret;
947}
948
949static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep)
950{
951 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
952
953 skb_push(card->rx_cmd.skb, INTF_HEADER_LEN);
954 if ((ep == card->rx_cmd_ep) &&
955 (!atomic_read(&card->rx_cmd_urb_pending)))
956 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
957 MWIFIEX_RX_CMD_BUF_SIZE);
958
959 return;
960}
961
962static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter,
963 struct sk_buff *skb)
964{
965 atomic_dec(&adapter->rx_pending);
966 mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT);
967
968 return 0;
969}
970
ca8d6dfc 971static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter)
4daffe35
AK		 972{
973 atomic_dec(&adapter->rx_pending);
4daffe35
AK		 974
975 return 0;
976}
977
978/* This function wakes up the card. */
979static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
980{
981 /* Simulation of HS_AWAKE event */
982 adapter->pm_wakeup_fw_try = false;
983 adapter->pm_wakeup_card_req = false;
984 adapter->ps_state = PS_STATE_AWAKE;
985
986 return 0;
987}
988
989static struct mwifiex_if_ops usb_ops = {
990 .register_dev = mwifiex_register_dev,
2739a95d 991 .unregister_dev = mwifiex_unregister_dev,
4daffe35
AK		 992 .wakeup = mwifiex_pm_wakeup_card,
993 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
994
995 /* USB specific */
996 .dnld_fw = mwifiex_usb_dnld_fw,
997 .cmdrsp_complete = mwifiex_usb_cmd_event_complete,
998 .event_complete = mwifiex_usb_cmd_event_complete,
999 .data_complete = mwifiex_usb_data_complete,
1000 .host_to_card = mwifiex_usb_host_to_card,
1001};
1002
1003/* This function initializes the USB driver module.
1004 *
1005 * This initiates the semaphore and registers the device with
1006 * USB bus.
1007 */
1008static int mwifiex_usb_init_module(void)
1009{
1010 int ret;
1011
1012 pr_debug("Marvell USB8797 Driver\n");
1013
1014 sema_init(&add_remove_card_sem, 1);
1015
1016 ret = usb_register(&mwifiex_usb_driver);
1017 if (ret)
1018 pr_err("Driver register failed!\n");
1019 else
1020 pr_debug("info: Driver registered successfully!\n");
1021
1022 return ret;
1023}
1024
1025/* This function cleans up the USB driver.
1026 *
1027 * The following major steps are followed in .disconnect for cleanup:
1028 * - Resume the device if its suspended
1029 * - Disconnect the device if connected
1030 * - Shutdown the firmware
1031 * - Unregister the device from USB bus.
1032 */
1033static void mwifiex_usb_cleanup_module(void)
1034{
1035 if (!down_interruptible(&add_remove_card_sem))
1036 up(&add_remove_card_sem);
1037
3fffd7c1
AK		 1038 /* set the flag as user is removing this module */
1039 user_rmmod = 1;
4daffe35
AK		 1040
1041 usb_deregister(&mwifiex_usb_driver);
1042}
1043
1044module_init(mwifiex_usb_init_module);
1045module_exit(mwifiex_usb_cleanup_module);
1046
1047MODULE_AUTHOR("Marvell International Ltd.");
1048MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION);
1049MODULE_VERSION(USB_VERSION);
1050MODULE_LICENSE("GPL v2");
68458ded
YAP		 1051MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME);
1052MODULE_FIRMWARE(USB8897_DEFAULT_FW_NAME);
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