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Merge branches 'uaccess.alpha', 'uaccess.arc', 'uaccess.arm', 'uaccess.arm64', 'uacce...
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / marvell / mwifiex / usb.c
1 /*
2 * Marvell Wireless LAN device driver: USB specific handling
3 *
4 * Copyright (C) 2012-2014, 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
25 static struct mwifiex_if_ops usb_ops;
26
27 static struct usb_device_id mwifiex_usb_table[] = {
28 /* 8766 */
29 {USB_DEVICE(USB8XXX_VID, USB8766_PID_1)},
30 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8766_PID_2,
31 USB_CLASS_VENDOR_SPEC,
32 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
33 /* 8797 */
34 {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)},
35 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2,
36 USB_CLASS_VENDOR_SPEC,
37 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
38 /* 8801 */
39 {USB_DEVICE(USB8XXX_VID, USB8801_PID_1)},
40 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8801_PID_2,
41 USB_CLASS_VENDOR_SPEC,
42 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
43 /* 8997 */
44 {USB_DEVICE(USB8XXX_VID, USB8997_PID_1)},
45 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8997_PID_2,
46 USB_CLASS_VENDOR_SPEC,
47 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
48 { } /* Terminating entry */
49 };
50
51 MODULE_DEVICE_TABLE(usb, mwifiex_usb_table);
52
53 static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size);
54
55 /* This function handles received packet. Necessary action is taken based on
56 * cmd/event/data.
57 */
58 static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
59 struct sk_buff *skb, u8 ep)
60 {
61 u32 recv_type;
62 __le32 tmp;
63 int ret;
64
65 if (adapter->hs_activated)
66 mwifiex_process_hs_config(adapter);
67
68 if (skb->len < INTF_HEADER_LEN) {
69 mwifiex_dbg(adapter, ERROR,
70 "%s: invalid skb->len\n", __func__);
71 return -1;
72 }
73
74 switch (ep) {
75 case MWIFIEX_USB_EP_CMD_EVENT:
76 mwifiex_dbg(adapter, EVENT,
77 "%s: EP_CMD_EVENT\n", __func__);
78 skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN);
79 recv_type = le32_to_cpu(tmp);
80 skb_pull(skb, INTF_HEADER_LEN);
81
82 switch (recv_type) {
83 case MWIFIEX_USB_TYPE_CMD:
84 if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) {
85 mwifiex_dbg(adapter, ERROR,
86 "CMD: skb->len too large\n");
87 ret = -1;
88 goto exit_restore_skb;
89 } else if (!adapter->curr_cmd) {
90 mwifiex_dbg(adapter, WARN, "CMD: no curr_cmd\n");
91 if (adapter->ps_state == PS_STATE_SLEEP_CFM) {
92 mwifiex_process_sleep_confirm_resp(
93 adapter, skb->data,
94 skb->len);
95 ret = 0;
96 goto exit_restore_skb;
97 }
98 ret = -1;
99 goto exit_restore_skb;
100 }
101
102 adapter->curr_cmd->resp_skb = skb;
103 adapter->cmd_resp_received = true;
104 break;
105 case MWIFIEX_USB_TYPE_EVENT:
106 if (skb->len < sizeof(u32)) {
107 mwifiex_dbg(adapter, ERROR,
108 "EVENT: skb->len too small\n");
109 ret = -1;
110 goto exit_restore_skb;
111 }
112 skb_copy_from_linear_data(skb, &tmp, sizeof(u32));
113 adapter->event_cause = le32_to_cpu(tmp);
114 mwifiex_dbg(adapter, EVENT,
115 "event_cause %#x\n", adapter->event_cause);
116
117 if (skb->len > MAX_EVENT_SIZE) {
118 mwifiex_dbg(adapter, ERROR,
119 "EVENT: event body too large\n");
120 ret = -1;
121 goto exit_restore_skb;
122 }
123
124 memcpy(adapter->event_body, skb->data +
125 MWIFIEX_EVENT_HEADER_LEN, skb->len);
126
127 adapter->event_received = true;
128 adapter->event_skb = skb;
129 break;
130 default:
131 mwifiex_dbg(adapter, ERROR,
132 "unknown recv_type %#x\n", recv_type);
133 return -1;
134 }
135 break;
136 case MWIFIEX_USB_EP_DATA:
137 mwifiex_dbg(adapter, DATA, "%s: EP_DATA\n", __func__);
138 if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) {
139 mwifiex_dbg(adapter, ERROR,
140 "DATA: skb->len too large\n");
141 return -1;
142 }
143
144 skb_queue_tail(&adapter->rx_data_q, skb);
145 adapter->data_received = true;
146 atomic_inc(&adapter->rx_pending);
147 break;
148 default:
149 mwifiex_dbg(adapter, ERROR,
150 "%s: unknown endport %#x\n", __func__, ep);
151 return -1;
152 }
153
154 return -EINPROGRESS;
155
156 exit_restore_skb:
157 /* The buffer will be reused for further cmds/events */
158 skb_push(skb, INTF_HEADER_LEN);
159
160 return ret;
161 }
162
163 static void mwifiex_usb_rx_complete(struct urb *urb)
164 {
165 struct urb_context *context = (struct urb_context *)urb->context;
166 struct mwifiex_adapter *adapter = context->adapter;
167 struct sk_buff *skb = context->skb;
168 struct usb_card_rec *card;
169 int recv_length = urb->actual_length;
170 int size, status;
171
172 if (!adapter || !adapter->card) {
173 pr_err("mwifiex adapter or card structure is not valid\n");
174 return;
175 }
176
177 card = (struct usb_card_rec *)adapter->card;
178 if (card->rx_cmd_ep == context->ep)
179 atomic_dec(&card->rx_cmd_urb_pending);
180 else
181 atomic_dec(&card->rx_data_urb_pending);
182
183 if (recv_length) {
184 if (urb->status || (adapter->surprise_removed)) {
185 mwifiex_dbg(adapter, ERROR,
186 "URB status is failed: %d\n", urb->status);
187 /* Do not free skb in case of command ep */
188 if (card->rx_cmd_ep != context->ep)
189 dev_kfree_skb_any(skb);
190 goto setup_for_next;
191 }
192 if (skb->len > recv_length)
193 skb_trim(skb, recv_length);
194 else
195 skb_put(skb, recv_length - skb->len);
196
197 status = mwifiex_usb_recv(adapter, skb, context->ep);
198
199 mwifiex_dbg(adapter, INFO,
200 "info: recv_length=%d, status=%d\n",
201 recv_length, status);
202 if (status == -EINPROGRESS) {
203 mwifiex_queue_main_work(adapter);
204
205 /* urb for data_ep is re-submitted now;
206 * urb for cmd_ep will be re-submitted in callback
207 * mwifiex_usb_recv_complete
208 */
209 if (card->rx_cmd_ep == context->ep)
210 return;
211 } else {
212 if (status == -1)
213 mwifiex_dbg(adapter, ERROR,
214 "received data processing failed!\n");
215
216 /* Do not free skb in case of command ep */
217 if (card->rx_cmd_ep != context->ep)
218 dev_kfree_skb_any(skb);
219 }
220 } else if (urb->status) {
221 if (!adapter->is_suspended) {
222 mwifiex_dbg(adapter, FATAL,
223 "Card is removed: %d\n", urb->status);
224 adapter->surprise_removed = true;
225 }
226 dev_kfree_skb_any(skb);
227 return;
228 } else {
229 /* Do not free skb in case of command ep */
230 if (card->rx_cmd_ep != context->ep)
231 dev_kfree_skb_any(skb);
232
233 /* fall through setup_for_next */
234 }
235
236 setup_for_next:
237 if (card->rx_cmd_ep == context->ep)
238 size = MWIFIEX_RX_CMD_BUF_SIZE;
239 else
240 size = MWIFIEX_RX_DATA_BUF_SIZE;
241
242 if (card->rx_cmd_ep == context->ep) {
243 mwifiex_usb_submit_rx_urb(context, size);
244 } else {
245 if (atomic_read(&adapter->rx_pending) <= HIGH_RX_PENDING) {
246 mwifiex_usb_submit_rx_urb(context, size);
247 } else {
248 context->skb = NULL;
249 }
250 }
251
252 return;
253 }
254
255 static void mwifiex_usb_tx_complete(struct urb *urb)
256 {
257 struct urb_context *context = (struct urb_context *)(urb->context);
258 struct mwifiex_adapter *adapter = context->adapter;
259 struct usb_card_rec *card = adapter->card;
260 struct usb_tx_data_port *port;
261 int i;
262
263 mwifiex_dbg(adapter, INFO,
264 "%s: status: %d\n", __func__, urb->status);
265
266 if (context->ep == card->tx_cmd_ep) {
267 mwifiex_dbg(adapter, CMD,
268 "%s: CMD\n", __func__);
269 atomic_dec(&card->tx_cmd_urb_pending);
270 adapter->cmd_sent = false;
271 } else {
272 mwifiex_dbg(adapter, DATA,
273 "%s: DATA\n", __func__);
274 mwifiex_write_data_complete(adapter, context->skb, 0,
275 urb->status ? -1 : 0);
276 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
277 port = &card->port[i];
278 if (context->ep == port->tx_data_ep) {
279 atomic_dec(&port->tx_data_urb_pending);
280 port->block_status = false;
281 break;
282 }
283 }
284 adapter->data_sent = false;
285 }
286
287 if (card->mc_resync_flag)
288 mwifiex_multi_chan_resync(adapter);
289
290 mwifiex_queue_main_work(adapter);
291
292 return;
293 }
294
295 static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size)
296 {
297 struct mwifiex_adapter *adapter = ctx->adapter;
298 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
299
300 if (card->rx_cmd_ep != ctx->ep) {
301 ctx->skb = dev_alloc_skb(size);
302 if (!ctx->skb) {
303 mwifiex_dbg(adapter, ERROR,
304 "%s: dev_alloc_skb failed\n", __func__);
305 return -ENOMEM;
306 }
307 }
308
309 usb_fill_bulk_urb(ctx->urb, card->udev,
310 usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data,
311 size, mwifiex_usb_rx_complete, (void *)ctx);
312
313 if (card->rx_cmd_ep == ctx->ep)
314 atomic_inc(&card->rx_cmd_urb_pending);
315 else
316 atomic_inc(&card->rx_data_urb_pending);
317
318 if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) {
319 mwifiex_dbg(adapter, ERROR, "usb_submit_urb failed\n");
320 dev_kfree_skb_any(ctx->skb);
321 ctx->skb = NULL;
322
323 if (card->rx_cmd_ep == ctx->ep)
324 atomic_dec(&card->rx_cmd_urb_pending);
325 else
326 atomic_dec(&card->rx_data_urb_pending);
327
328 return -1;
329 }
330
331 return 0;
332 }
333
334 static void mwifiex_usb_free(struct usb_card_rec *card)
335 {
336 struct usb_tx_data_port *port;
337 int i, j;
338
339 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
340 usb_kill_urb(card->rx_cmd.urb);
341
342 usb_free_urb(card->rx_cmd.urb);
343 card->rx_cmd.urb = NULL;
344
345 if (atomic_read(&card->rx_data_urb_pending))
346 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
347 if (card->rx_data_list[i].urb)
348 usb_kill_urb(card->rx_data_list[i].urb);
349
350 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
351 usb_free_urb(card->rx_data_list[i].urb);
352 card->rx_data_list[i].urb = NULL;
353 }
354
355 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
356 port = &card->port[i];
357 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) {
358 usb_free_urb(port->tx_data_list[j].urb);
359 port->tx_data_list[j].urb = NULL;
360 }
361 }
362
363 usb_free_urb(card->tx_cmd.urb);
364 card->tx_cmd.urb = NULL;
365
366 return;
367 }
368
369 /* This function probes an mwifiex device and registers it. It allocates
370 * the card structure, initiates the device registration and initialization
371 * procedure by adding a logical interface.
372 */
373 static int mwifiex_usb_probe(struct usb_interface *intf,
374 const struct usb_device_id *id)
375 {
376 struct usb_device *udev = interface_to_usbdev(intf);
377 struct usb_host_interface *iface_desc = intf->cur_altsetting;
378 struct usb_endpoint_descriptor *epd;
379 int ret, i;
380 struct usb_card_rec *card;
381 u16 id_vendor, id_product, bcd_device;
382
383 card = devm_kzalloc(&intf->dev, sizeof(*card), GFP_KERNEL);
384 if (!card)
385 return -ENOMEM;
386
387 init_completion(&card->fw_done);
388
389 id_vendor = le16_to_cpu(udev->descriptor.idVendor);
390 id_product = le16_to_cpu(udev->descriptor.idProduct);
391 bcd_device = le16_to_cpu(udev->descriptor.bcdDevice);
392 pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n",
393 id_vendor, id_product, bcd_device);
394
395 /* PID_1 is used for firmware downloading only */
396 switch (id_product) {
397 case USB8766_PID_1:
398 case USB8797_PID_1:
399 case USB8801_PID_1:
400 case USB8997_PID_1:
401 card->usb_boot_state = USB8XXX_FW_DNLD;
402 break;
403 case USB8766_PID_2:
404 case USB8797_PID_2:
405 case USB8801_PID_2:
406 case USB8997_PID_2:
407 card->usb_boot_state = USB8XXX_FW_READY;
408 break;
409 default:
410 pr_warn("unknown id_product %#x\n", id_product);
411 card->usb_boot_state = USB8XXX_FW_DNLD;
412 break;
413 }
414
415 card->udev = udev;
416 card->intf = intf;
417
418 pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n",
419 udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass,
420 udev->descriptor.bDeviceSubClass,
421 udev->descriptor.bDeviceProtocol);
422
423 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
424 epd = &iface_desc->endpoint[i].desc;
425 if (usb_endpoint_dir_in(epd) &&
426 usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
427 usb_endpoint_xfer_bulk(epd)) {
428 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
429 le16_to_cpu(epd->wMaxPacketSize),
430 epd->bEndpointAddress);
431 card->rx_cmd_ep = usb_endpoint_num(epd);
432 atomic_set(&card->rx_cmd_urb_pending, 0);
433 }
434 if (usb_endpoint_dir_in(epd) &&
435 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
436 usb_endpoint_xfer_bulk(epd)) {
437 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
438 le16_to_cpu(epd->wMaxPacketSize),
439 epd->bEndpointAddress);
440 card->rx_data_ep = usb_endpoint_num(epd);
441 atomic_set(&card->rx_data_urb_pending, 0);
442 }
443 if (usb_endpoint_dir_out(epd) &&
444 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
445 usb_endpoint_xfer_bulk(epd)) {
446 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
447 le16_to_cpu(epd->wMaxPacketSize),
448 epd->bEndpointAddress);
449 card->port[0].tx_data_ep = usb_endpoint_num(epd);
450 atomic_set(&card->port[0].tx_data_urb_pending, 0);
451 }
452 if (usb_endpoint_dir_out(epd) &&
453 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA_CH2 &&
454 usb_endpoint_xfer_bulk(epd)) {
455 pr_debug("info: bulk OUT chan2:\t"
456 "max pkt size: %d, addr: %d\n",
457 le16_to_cpu(epd->wMaxPacketSize),
458 epd->bEndpointAddress);
459 card->port[1].tx_data_ep = usb_endpoint_num(epd);
460 atomic_set(&card->port[1].tx_data_urb_pending, 0);
461 }
462 if (usb_endpoint_dir_out(epd) &&
463 usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
464 usb_endpoint_xfer_bulk(epd)) {
465 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
466 le16_to_cpu(epd->wMaxPacketSize),
467 epd->bEndpointAddress);
468 card->tx_cmd_ep = usb_endpoint_num(epd);
469 atomic_set(&card->tx_cmd_urb_pending, 0);
470 card->bulk_out_maxpktsize =
471 le16_to_cpu(epd->wMaxPacketSize);
472 }
473 }
474
475 usb_set_intfdata(intf, card);
476
477 ret = mwifiex_add_card(card, &card->fw_done, &usb_ops,
478 MWIFIEX_USB, &card->udev->dev);
479 if (ret) {
480 pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
481 usb_reset_device(udev);
482 return ret;
483 }
484
485 usb_get_dev(udev);
486
487 return 0;
488 }
489
490 /* Kernel needs to suspend all functions separately. Therefore all
491 * registered functions must have drivers with suspend and resume
492 * methods. Failing that the kernel simply removes the whole card.
493 *
494 * If already not suspended, this function allocates and sends a
495 * 'host sleep activate' request to the firmware and turns off the traffic.
496 */
497 static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
498 {
499 struct usb_card_rec *card = usb_get_intfdata(intf);
500 struct mwifiex_adapter *adapter;
501 struct usb_tx_data_port *port;
502 int i, j;
503
504 /* Might still be loading firmware */
505 wait_for_completion(&card->fw_done);
506
507 adapter = card->adapter;
508 if (!adapter) {
509 dev_err(&intf->dev, "card is not valid\n");
510 return 0;
511 }
512
513 if (unlikely(adapter->is_suspended))
514 mwifiex_dbg(adapter, WARN,
515 "Device already suspended\n");
516
517 /* Enable the Host Sleep */
518 if (!mwifiex_enable_hs(adapter)) {
519 mwifiex_dbg(adapter, ERROR,
520 "cmd: failed to suspend\n");
521 adapter->hs_enabling = false;
522 return -EFAULT;
523 }
524
525
526 /* 'is_suspended' flag indicates device is suspended.
527 * It must be set here before the usb_kill_urb() calls. Reason
528 * is in the complete handlers, urb->status(= -ENOENT) and
529 * this flag is used in combination to distinguish between a
530 * 'suspended' state and a 'disconnect' one.
531 */
532 adapter->is_suspended = true;
533 adapter->hs_enabling = false;
534
535 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
536 usb_kill_urb(card->rx_cmd.urb);
537
538 if (atomic_read(&card->rx_data_urb_pending))
539 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
540 if (card->rx_data_list[i].urb)
541 usb_kill_urb(card->rx_data_list[i].urb);
542
543 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
544 port = &card->port[i];
545 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) {
546 if (port->tx_data_list[j].urb)
547 usb_kill_urb(port->tx_data_list[j].urb);
548 }
549 }
550
551 if (card->tx_cmd.urb)
552 usb_kill_urb(card->tx_cmd.urb);
553
554 return 0;
555 }
556
557 /* Kernel needs to suspend all functions separately. Therefore all
558 * registered functions must have drivers with suspend and resume
559 * methods. Failing that the kernel simply removes the whole card.
560 *
561 * If already not resumed, this function turns on the traffic and
562 * sends a 'host sleep cancel' request to the firmware.
563 */
564 static int mwifiex_usb_resume(struct usb_interface *intf)
565 {
566 struct usb_card_rec *card = usb_get_intfdata(intf);
567 struct mwifiex_adapter *adapter;
568 int i;
569
570 if (!card->adapter) {
571 dev_err(&intf->dev, "%s: card->adapter is NULL\n",
572 __func__);
573 return 0;
574 }
575 adapter = card->adapter;
576
577 if (unlikely(!adapter->is_suspended)) {
578 mwifiex_dbg(adapter, WARN,
579 "Device already resumed\n");
580 return 0;
581 }
582
583 /* Indicate device resumed. The netdev queue will be resumed only
584 * after the urbs have been re-submitted
585 */
586 adapter->is_suspended = false;
587
588 if (!atomic_read(&card->rx_data_urb_pending))
589 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
590 mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
591 MWIFIEX_RX_DATA_BUF_SIZE);
592
593 if (!atomic_read(&card->rx_cmd_urb_pending)) {
594 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
595 if (card->rx_cmd.skb)
596 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
597 MWIFIEX_RX_CMD_BUF_SIZE);
598 }
599
600 /* Disable Host Sleep */
601 if (adapter->hs_activated)
602 mwifiex_cancel_hs(mwifiex_get_priv(adapter,
603 MWIFIEX_BSS_ROLE_ANY),
604 MWIFIEX_ASYNC_CMD);
605
606 return 0;
607 }
608
609 static void mwifiex_usb_disconnect(struct usb_interface *intf)
610 {
611 struct usb_card_rec *card = usb_get_intfdata(intf);
612 struct mwifiex_adapter *adapter;
613
614 wait_for_completion(&card->fw_done);
615
616 adapter = card->adapter;
617 if (!adapter || !adapter->priv_num)
618 return;
619
620 if (card->udev->state != USB_STATE_NOTATTACHED && !adapter->mfg_mode) {
621 mwifiex_deauthenticate_all(adapter);
622
623 mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
624 MWIFIEX_BSS_ROLE_ANY),
625 MWIFIEX_FUNC_SHUTDOWN);
626 }
627
628 mwifiex_usb_free(card);
629
630 mwifiex_dbg(adapter, FATAL,
631 "%s: removing card\n", __func__);
632 mwifiex_remove_card(adapter);
633
634 usb_put_dev(interface_to_usbdev(intf));
635 }
636
637 static struct usb_driver mwifiex_usb_driver = {
638 .name = "mwifiex_usb",
639 .probe = mwifiex_usb_probe,
640 .disconnect = mwifiex_usb_disconnect,
641 .id_table = mwifiex_usb_table,
642 .suspend = mwifiex_usb_suspend,
643 .resume = mwifiex_usb_resume,
644 .soft_unbind = 1,
645 };
646
647 static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
648 {
649 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
650 struct usb_tx_data_port *port;
651 int i, j;
652
653 card->tx_cmd.adapter = adapter;
654 card->tx_cmd.ep = card->tx_cmd_ep;
655
656 card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
657 if (!card->tx_cmd.urb)
658 return -ENOMEM;
659
660 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
661 port = &card->port[i];
662 if (!port->tx_data_ep)
663 continue;
664 port->tx_data_ix = 0;
665 if (port->tx_data_ep == MWIFIEX_USB_EP_DATA)
666 port->block_status = false;
667 else
668 port->block_status = true;
669 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) {
670 port->tx_data_list[j].adapter = adapter;
671 port->tx_data_list[j].ep = port->tx_data_ep;
672 port->tx_data_list[j].urb =
673 usb_alloc_urb(0, GFP_KERNEL);
674 if (!port->tx_data_list[j].urb)
675 return -ENOMEM;
676 }
677 }
678
679 return 0;
680 }
681
682 static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
683 {
684 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
685 int i;
686
687 card->rx_cmd.adapter = adapter;
688 card->rx_cmd.ep = card->rx_cmd_ep;
689
690 card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
691 if (!card->rx_cmd.urb)
692 return -ENOMEM;
693
694 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
695 if (!card->rx_cmd.skb)
696 return -ENOMEM;
697
698 if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE))
699 return -1;
700
701 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
702 card->rx_data_list[i].adapter = adapter;
703 card->rx_data_list[i].ep = card->rx_data_ep;
704
705 card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
706 if (!card->rx_data_list[i].urb)
707 return -1;
708 if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
709 MWIFIEX_RX_DATA_BUF_SIZE))
710 return -1;
711 }
712
713 return 0;
714 }
715
716 static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
717 u32 *len, u8 ep, u32 timeout)
718 {
719 struct usb_card_rec *card = adapter->card;
720 int actual_length, ret;
721
722 if (!(*len % card->bulk_out_maxpktsize))
723 (*len)++;
724
725 /* Send the data block */
726 ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf,
727 *len, &actual_length, timeout);
728 if (ret) {
729 mwifiex_dbg(adapter, ERROR,
730 "usb_bulk_msg for tx failed: %d\n", ret);
731 return ret;
732 }
733
734 *len = actual_length;
735
736 return ret;
737 }
738
739 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
740 u32 *len, u8 ep, u32 timeout)
741 {
742 struct usb_card_rec *card = adapter->card;
743 int actual_length, ret;
744
745 /* Receive the data response */
746 ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf,
747 *len, &actual_length, timeout);
748 if (ret) {
749 mwifiex_dbg(adapter, ERROR,
750 "usb_bulk_msg for rx failed: %d\n", ret);
751 return ret;
752 }
753
754 *len = actual_length;
755
756 return ret;
757 }
758
759 static void mwifiex_usb_port_resync(struct mwifiex_adapter *adapter)
760 {
761 struct usb_card_rec *card = adapter->card;
762 u8 active_port = MWIFIEX_USB_EP_DATA;
763 struct mwifiex_private *priv = NULL;
764 int i;
765
766 if (adapter->usb_mc_status) {
767 for (i = 0; i < adapter->priv_num; i++) {
768 priv = adapter->priv[i];
769 if (!priv)
770 continue;
771 if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP &&
772 !priv->bss_started) ||
773 (priv->bss_role == MWIFIEX_BSS_ROLE_STA &&
774 !priv->media_connected))
775 priv->usb_port = MWIFIEX_USB_EP_DATA;
776 }
777 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++)
778 card->port[i].block_status = false;
779 } else {
780 for (i = 0; i < adapter->priv_num; i++) {
781 priv = adapter->priv[i];
782 if (!priv)
783 continue;
784 if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP &&
785 priv->bss_started) ||
786 (priv->bss_role == MWIFIEX_BSS_ROLE_STA &&
787 priv->media_connected)) {
788 active_port = priv->usb_port;
789 break;
790 }
791 }
792 for (i = 0; i < adapter->priv_num; i++) {
793 priv = adapter->priv[i];
794 if (priv)
795 priv->usb_port = active_port;
796 }
797 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
798 if (active_port == card->port[i].tx_data_ep)
799 card->port[i].block_status = false;
800 else
801 card->port[i].block_status = true;
802 }
803 }
804 }
805
806 static bool mwifiex_usb_is_port_ready(struct mwifiex_private *priv)
807 {
808 struct usb_card_rec *card = priv->adapter->card;
809 int idx;
810
811 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) {
812 if (priv->usb_port == card->port[idx].tx_data_ep)
813 return !card->port[idx].block_status;
814 }
815
816 return false;
817 }
818
819 static inline u8 mwifiex_usb_data_sent(struct mwifiex_adapter *adapter)
820 {
821 struct usb_card_rec *card = adapter->card;
822 int i;
823
824 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++)
825 if (!card->port[i].block_status)
826 return false;
827
828 return true;
829 }
830
831 /* This function write a command/data packet to card. */
832 static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep,
833 struct sk_buff *skb,
834 struct mwifiex_tx_param *tx_param)
835 {
836 struct usb_card_rec *card = adapter->card;
837 struct urb_context *context = NULL;
838 struct usb_tx_data_port *port = NULL;
839 u8 *data = (u8 *)skb->data;
840 struct urb *tx_urb;
841 int idx, ret = -EINPROGRESS;
842
843 if (adapter->is_suspended) {
844 mwifiex_dbg(adapter, ERROR,
845 "%s: not allowed while suspended\n", __func__);
846 return -1;
847 }
848
849 if (adapter->surprise_removed) {
850 mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__);
851 return -1;
852 }
853
854 mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep);
855
856 if (ep == card->tx_cmd_ep) {
857 context = &card->tx_cmd;
858 } else {
859 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) {
860 if (ep == card->port[idx].tx_data_ep) {
861 port = &card->port[idx];
862 if (atomic_read(&port->tx_data_urb_pending)
863 >= MWIFIEX_TX_DATA_URB) {
864 port->block_status = true;
865 adapter->data_sent =
866 mwifiex_usb_data_sent(adapter);
867 return -EBUSY;
868 }
869 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB)
870 port->tx_data_ix = 0;
871 context =
872 &port->tx_data_list[port->tx_data_ix++];
873 break;
874 }
875 }
876 if (!port) {
877 mwifiex_dbg(adapter, ERROR, "Wrong usb tx data port\n");
878 return -1;
879 }
880 }
881
882 context->adapter = adapter;
883 context->ep = ep;
884 context->skb = skb;
885 tx_urb = context->urb;
886
887 usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep),
888 data, skb->len, mwifiex_usb_tx_complete,
889 (void *)context);
890
891 tx_urb->transfer_flags |= URB_ZERO_PACKET;
892
893 if (ep == card->tx_cmd_ep)
894 atomic_inc(&card->tx_cmd_urb_pending);
895 else
896 atomic_inc(&port->tx_data_urb_pending);
897
898 if (ep != card->tx_cmd_ep &&
899 atomic_read(&port->tx_data_urb_pending) ==
900 MWIFIEX_TX_DATA_URB) {
901 port->block_status = true;
902 adapter->data_sent = mwifiex_usb_data_sent(adapter);
903 ret = -ENOSR;
904 }
905
906 if (usb_submit_urb(tx_urb, GFP_ATOMIC)) {
907 mwifiex_dbg(adapter, ERROR,
908 "%s: usb_submit_urb failed\n", __func__);
909 if (ep == card->tx_cmd_ep) {
910 atomic_dec(&card->tx_cmd_urb_pending);
911 } else {
912 atomic_dec(&port->tx_data_urb_pending);
913 port->block_status = false;
914 adapter->data_sent = false;
915 if (port->tx_data_ix)
916 port->tx_data_ix--;
917 else
918 port->tx_data_ix = MWIFIEX_TX_DATA_URB;
919 }
920 ret = -1;
921 }
922
923 return ret;
924 }
925
926 /* This function register usb device and initialize parameter. */
927 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
928 {
929 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
930
931 card->adapter = adapter;
932
933 switch (le16_to_cpu(card->udev->descriptor.idProduct)) {
934 case USB8997_PID_1:
935 case USB8997_PID_2:
936 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K;
937 strcpy(adapter->fw_name, USB8997_DEFAULT_FW_NAME);
938 adapter->ext_scan = true;
939 break;
940 case USB8766_PID_1:
941 case USB8766_PID_2:
942 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
943 strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME);
944 adapter->ext_scan = true;
945 break;
946 case USB8801_PID_1:
947 case USB8801_PID_2:
948 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
949 strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME);
950 adapter->ext_scan = false;
951 break;
952 case USB8797_PID_1:
953 case USB8797_PID_2:
954 default:
955 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
956 strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME);
957 break;
958 }
959
960 adapter->usb_mc_status = false;
961 adapter->usb_mc_setup = false;
962
963 return 0;
964 }
965
966 static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
967 {
968 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
969
970 card->adapter = NULL;
971 }
972
973 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
974 struct mwifiex_fw_image *fw)
975 {
976 int ret = 0;
977 u8 *firmware = fw->fw_buf, *recv_buff;
978 u32 retries = USB8XXX_FW_MAX_RETRY + 1;
979 u32 dlen;
980 u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0;
981 struct fw_data *fwdata;
982 struct fw_sync_header sync_fw;
983 u8 check_winner = 1;
984
985 if (!firmware) {
986 mwifiex_dbg(adapter, ERROR,
987 "No firmware image found! Terminating download\n");
988 ret = -1;
989 goto fw_exit;
990 }
991
992 /* Allocate memory for transmit */
993 fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL);
994 if (!fwdata) {
995 ret = -ENOMEM;
996 goto fw_exit;
997 }
998
999 /* Allocate memory for receive */
1000 recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL);
1001 if (!recv_buff) {
1002 ret = -ENOMEM;
1003 goto cleanup;
1004 }
1005
1006 do {
1007 /* Send pseudo data to check winner status first */
1008 if (check_winner) {
1009 memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header));
1010 dlen = 0;
1011 } else {
1012 /* copy the header of the fw_data to get the length */
1013 memcpy(&fwdata->fw_hdr, &firmware[tlen],
1014 sizeof(struct fw_header));
1015
1016 dlen = le32_to_cpu(fwdata->fw_hdr.data_len);
1017 dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd);
1018 tlen += sizeof(struct fw_header);
1019
1020 /* Command 7 doesn't have data length field */
1021 if (dnld_cmd == FW_CMD_7)
1022 dlen = 0;
1023
1024 memcpy(fwdata->data, &firmware[tlen], dlen);
1025
1026 fwdata->seq_num = cpu_to_le32(fw_seqnum);
1027 tlen += dlen;
1028 }
1029
1030 /* If the send/receive fails or CRC occurs then retry */
1031 while (--retries) {
1032 u8 *buf = (u8 *)fwdata;
1033 u32 len = FW_DATA_XMIT_SIZE;
1034
1035 /* send the firmware block */
1036 ret = mwifiex_write_data_sync(adapter, buf, &len,
1037 MWIFIEX_USB_EP_CMD_EVENT,
1038 MWIFIEX_USB_TIMEOUT);
1039 if (ret) {
1040 mwifiex_dbg(adapter, ERROR,
1041 "write_data_sync: failed: %d\n",
1042 ret);
1043 continue;
1044 }
1045
1046 buf = recv_buff;
1047 len = FW_DNLD_RX_BUF_SIZE;
1048
1049 /* Receive the firmware block response */
1050 ret = mwifiex_read_data_sync(adapter, buf, &len,
1051 MWIFIEX_USB_EP_CMD_EVENT,
1052 MWIFIEX_USB_TIMEOUT);
1053 if (ret) {
1054 mwifiex_dbg(adapter, ERROR,
1055 "read_data_sync: failed: %d\n",
1056 ret);
1057 continue;
1058 }
1059
1060 memcpy(&sync_fw, recv_buff,
1061 sizeof(struct fw_sync_header));
1062
1063 /* check 1st firmware block resp for highest bit set */
1064 if (check_winner) {
1065 if (le32_to_cpu(sync_fw.cmd) & 0x80000000) {
1066 mwifiex_dbg(adapter, WARN,
1067 "USB is not the winner %#x\n",
1068 sync_fw.cmd);
1069
1070 /* returning success */
1071 ret = 0;
1072 goto cleanup;
1073 }
1074
1075 mwifiex_dbg(adapter, MSG,
1076 "start to download FW...\n");
1077
1078 check_winner = 0;
1079 break;
1080 }
1081
1082 /* check the firmware block response for CRC errors */
1083 if (sync_fw.cmd) {
1084 mwifiex_dbg(adapter, ERROR,
1085 "FW received block with CRC %#x\n",
1086 sync_fw.cmd);
1087 ret = -1;
1088 continue;
1089 }
1090
1091 retries = USB8XXX_FW_MAX_RETRY + 1;
1092 break;
1093 }
1094 fw_seqnum++;
1095 } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries);
1096
1097 cleanup:
1098 mwifiex_dbg(adapter, MSG,
1099 "info: FW download over, size %d bytes\n", tlen);
1100
1101 kfree(recv_buff);
1102 kfree(fwdata);
1103
1104 if (retries)
1105 ret = 0;
1106 fw_exit:
1107 return ret;
1108 }
1109
1110 static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
1111 struct mwifiex_fw_image *fw)
1112 {
1113 int ret;
1114 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
1115
1116 if (card->usb_boot_state == USB8XXX_FW_DNLD) {
1117 ret = mwifiex_prog_fw_w_helper(adapter, fw);
1118 if (ret)
1119 return -1;
1120
1121 /* Boot state changes after successful firmware download */
1122 if (card->usb_boot_state == USB8XXX_FW_DNLD)
1123 return -1;
1124 }
1125
1126 ret = mwifiex_usb_rx_init(adapter);
1127 if (!ret)
1128 ret = mwifiex_usb_tx_init(adapter);
1129
1130 return ret;
1131 }
1132
1133 static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep)
1134 {
1135 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
1136
1137 skb_push(card->rx_cmd.skb, INTF_HEADER_LEN);
1138 if ((ep == card->rx_cmd_ep) &&
1139 (!atomic_read(&card->rx_cmd_urb_pending)))
1140 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
1141 MWIFIEX_RX_CMD_BUF_SIZE);
1142
1143 return;
1144 }
1145
1146 static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter,
1147 struct sk_buff *skb)
1148 {
1149 mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT);
1150
1151 return 0;
1152 }
1153
1154 /* This function wakes up the card. */
1155 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
1156 {
1157 /* Simulation of HS_AWAKE event */
1158 adapter->pm_wakeup_fw_try = false;
1159 del_timer(&adapter->wakeup_timer);
1160 adapter->pm_wakeup_card_req = false;
1161 adapter->ps_state = PS_STATE_AWAKE;
1162
1163 return 0;
1164 }
1165
1166 static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter)
1167 {
1168 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
1169 int i;
1170 struct urb_context *ctx;
1171
1172 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
1173 if (card->rx_data_list[i].skb)
1174 continue;
1175 ctx = &card->rx_data_list[i];
1176 mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE);
1177 }
1178 }
1179
1180 /* This function is called after the card has woken up. */
1181 static inline int
1182 mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
1183 {
1184 return 0;
1185 }
1186
1187 static struct mwifiex_if_ops usb_ops = {
1188 .register_dev = mwifiex_register_dev,
1189 .unregister_dev = mwifiex_unregister_dev,
1190 .wakeup = mwifiex_pm_wakeup_card,
1191 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
1192
1193 /* USB specific */
1194 .dnld_fw = mwifiex_usb_dnld_fw,
1195 .cmdrsp_complete = mwifiex_usb_cmd_event_complete,
1196 .event_complete = mwifiex_usb_cmd_event_complete,
1197 .host_to_card = mwifiex_usb_host_to_card,
1198 .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs,
1199 .multi_port_resync = mwifiex_usb_port_resync,
1200 .is_port_ready = mwifiex_usb_is_port_ready,
1201 };
1202
1203 module_usb_driver(mwifiex_usb_driver);
1204
1205 MODULE_AUTHOR("Marvell International Ltd.");
1206 MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION);
1207 MODULE_VERSION(USB_VERSION);
1208 MODULE_LICENSE("GPL v2");
1209 MODULE_FIRMWARE(USB8766_DEFAULT_FW_NAME);
1210 MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME);
1211 MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME);
1212 MODULE_FIRMWARE(USB8997_DEFAULT_FW_NAME);
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