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Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
[deliverable/linux.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[] = {
9e6f3f47
KE		 30 /* 8766 */
31 {USB_DEVICE(USB8XXX_VID, USB8766_PID_1)},
32 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8766_PID_2,
33 USB_CLASS_VENDOR_SPEC,
34 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
68458ded
YAP		 35 /* 8797 */
36 {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)},
37 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2,
38 USB_CLASS_VENDOR_SPEC,
39 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
eaa3d9fa
YAP		 40 /* 8801 */
41 {USB_DEVICE(USB8XXX_VID, USB8801_PID_1)},
42 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8801_PID_2,
43 USB_CLASS_VENDOR_SPEC,
44 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
68458ded
YAP		 45 /* 8897 */
46 {USB_DEVICE(USB8XXX_VID, USB8897_PID_1)},
47 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8897_PID_2,
4daffe35
AK		 48 USB_CLASS_VENDOR_SPEC,
49 USB_SUBCLASS_VENDOR_SPEC, 0xff)},
50 { } /* Terminating entry */
51};
52
53MODULE_DEVICE_TABLE(usb, mwifiex_usb_table);
54
55static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size);
56
57/* This function handles received packet. Necessary action is taken based on
58 * cmd/event/data.
59 */
60static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
61 struct sk_buff *skb, u8 ep)
62{
4daffe35
AK		 63 u32 recv_type;
64 __le32 tmp;
8311f0da 65 int ret;
4daffe35
AK		 66
67 if (adapter->hs_activated)
68 mwifiex_process_hs_config(adapter);
69
70 if (skb->len < INTF_HEADER_LEN) {
acebe8c1
ZL		 71 mwifiex_dbg(adapter, ERROR,
72 "%s: invalid skb->len\n", __func__);
4daffe35
AK		 73 return -1;
74 }
75
76 switch (ep) {
77 case MWIFIEX_USB_EP_CMD_EVENT:
acebe8c1
ZL		 78 mwifiex_dbg(adapter, EVENT,
79 "%s: EP_CMD_EVENT\n", __func__);
4daffe35
AK		 80 skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN);
81 recv_type = le32_to_cpu(tmp);
82 skb_pull(skb, INTF_HEADER_LEN);
83
84 switch (recv_type) {
85 case MWIFIEX_USB_TYPE_CMD:
86 if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) {
acebe8c1
ZL		 87 mwifiex_dbg(adapter, ERROR,
88 "CMD: skb->len too large\n");
8311f0da
AK		 89 ret = -1;
90 goto exit_restore_skb;
4daffe35 91 } else if (!adapter->curr_cmd) {
acebe8c1 92 mwifiex_dbg(adapter, WARN, "CMD: no curr_cmd\n");
4daffe35
AK		 93 if (adapter->ps_state == PS_STATE_SLEEP_CFM) {
94 mwifiex_process_sleep_confirm_resp(
95 adapter, skb->data,
96 skb->len);
8311f0da
AK		 97 ret = 0;
98 goto exit_restore_skb;
4daffe35 99 }
8311f0da
AK		 100 ret = -1;
101 goto exit_restore_skb;
4daffe35
AK		 102 }
103
104 adapter->curr_cmd->resp_skb = skb;
105 adapter->cmd_resp_received = true;
106 break;
107 case MWIFIEX_USB_TYPE_EVENT:
108 if (skb->len < sizeof(u32)) {
acebe8c1
ZL		 109 mwifiex_dbg(adapter, ERROR,
110 "EVENT: skb->len too small\n");
8311f0da
AK		 111 ret = -1;
112 goto exit_restore_skb;
4daffe35
AK		 113 }
114 skb_copy_from_linear_data(skb, &tmp, sizeof(u32));
115 adapter->event_cause = le32_to_cpu(tmp);
acebe8c1
ZL		 116 mwifiex_dbg(adapter, EVENT,
117 "event_cause %#x\n", adapter->event_cause);
4daffe35
AK		 118
119 if (skb->len > MAX_EVENT_SIZE) {
acebe8c1
ZL		 120 mwifiex_dbg(adapter, ERROR,
121 "EVENT: event body too large\n");
8311f0da
AK		 122 ret = -1;
123 goto exit_restore_skb;
4daffe35
AK		 124 }
125
e80c81dc
AK		 126 memcpy(adapter->event_body, skb->data +
127 MWIFIEX_EVENT_HEADER_LEN, skb->len);
128
4daffe35
AK		 129 adapter->event_received = true;
130 adapter->event_skb = skb;
131 break;
132 default:
acebe8c1
ZL		 133 mwifiex_dbg(adapter, ERROR,
134 "unknown recv_type %#x\n", recv_type);
4daffe35
AK		 135 return -1;
136 }
137 break;
138 case MWIFIEX_USB_EP_DATA:
acebe8c1 139 mwifiex_dbg(adapter, DATA, "%s: EP_DATA\n", __func__);
4daffe35 140 if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) {
acebe8c1
ZL		 141 mwifiex_dbg(adapter, ERROR,
142 "DATA: skb->len too large\n");
4daffe35
AK		 143 return -1;
144 }
ec4a16b4
AP		 145
146 skb_queue_tail(&adapter->rx_data_q, skb);
4daffe35 147 adapter->data_received = true;
ec4a16b4 148 atomic_inc(&adapter->rx_pending);
4daffe35
AK		 149 break;
150 default:
acebe8c1
ZL		 151 mwifiex_dbg(adapter, ERROR,
152 "%s: unknown endport %#x\n", __func__, ep);
4daffe35
AK		 153 return -1;
154 }
155
156 return -EINPROGRESS;
8311f0da
AK		 157
158exit_restore_skb:
159 /* The buffer will be reused for further cmds/events */
160 skb_push(skb, INTF_HEADER_LEN);
161
162 return ret;
4daffe35
AK		 163}
164
165static void mwifiex_usb_rx_complete(struct urb *urb)
166{
167 struct urb_context *context = (struct urb_context *)urb->context;
168 struct mwifiex_adapter *adapter = context->adapter;
169 struct sk_buff *skb = context->skb;
170 struct usb_card_rec *card;
171 int recv_length = urb->actual_length;
172 int size, status;
173
174 if (!adapter || !adapter->card) {
175 pr_err("mwifiex adapter or card structure is not valid\n");
176 return;
177 }
178
179 card = (struct usb_card_rec *)adapter->card;
180 if (card->rx_cmd_ep == context->ep)
181 atomic_dec(&card->rx_cmd_urb_pending);
182 else
183 atomic_dec(&card->rx_data_urb_pending);
184
185 if (recv_length) {
186 if (urb->status || (adapter->surprise_removed)) {
acebe8c1
ZL		 187 mwifiex_dbg(adapter, ERROR,
188 "URB status is failed: %d\n", urb->status);
4daffe35
AK		 189 /* Do not free skb in case of command ep */
190 if (card->rx_cmd_ep != context->ep)
191 dev_kfree_skb_any(skb);
192 goto setup_for_next;
193 }
194 if (skb->len > recv_length)
195 skb_trim(skb, recv_length);
196 else
197 skb_put(skb, recv_length - skb->len);
198
4daffe35
AK		 199 status = mwifiex_usb_recv(adapter, skb, context->ep);
200
acebe8c1
ZL		 201 mwifiex_dbg(adapter, INFO,
202 "info: recv_length=%d, status=%d\n",
203 recv_length, status);
4daffe35 204 if (status == -EINPROGRESS) {
b2713f67 205 mwifiex_queue_main_work(adapter);
4daffe35
AK		 206
207 /* urb for data_ep is re-submitted now;
208 * urb for cmd_ep will be re-submitted in callback
209 * mwifiex_usb_recv_complete
210 */
211 if (card->rx_cmd_ep == context->ep)
212 return;
213 } else {
4daffe35 214 if (status == -1)
acebe8c1
ZL		 215 mwifiex_dbg(adapter, ERROR,
216 "received data processing failed!\n");
4daffe35
AK		 217
218 /* Do not free skb in case of command ep */
219 if (card->rx_cmd_ep != context->ep)
220 dev_kfree_skb_any(skb);
221 }
222 } else if (urb->status) {
223 if (!adapter->is_suspended) {
acebe8c1
ZL		 224 mwifiex_dbg(adapter, FATAL,
225 "Card is removed: %d\n", urb->status);
4daffe35
AK		 226 adapter->surprise_removed = true;
227 }
228 dev_kfree_skb_any(skb);
229 return;
230 } else {
231 /* Do not free skb in case of command ep */
232 if (card->rx_cmd_ep != context->ep)
233 dev_kfree_skb_any(skb);
234
235 /* fall through setup_for_next */
236 }
237
238setup_for_next:
239 if (card->rx_cmd_ep == context->ep)
240 size = MWIFIEX_RX_CMD_BUF_SIZE;
241 else
242 size = MWIFIEX_RX_DATA_BUF_SIZE;
243
cf6a64fd
AK		 244 if (card->rx_cmd_ep == context->ep) {
245 mwifiex_usb_submit_rx_urb(context, size);
246 } else {
247 context->skb = NULL;
248 if (atomic_read(&adapter->rx_pending) <= HIGH_RX_PENDING)
249 mwifiex_usb_submit_rx_urb(context, size);
250 }
4daffe35
AK		 251
252 return;
253}
254
255static 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
acebe8c1
ZL		 261 mwifiex_dbg(adapter, INFO,
262 "%s: status: %d\n", __func__, urb->status);
4daffe35
AK		 263
264 if (context->ep == card->tx_cmd_ep) {
acebe8c1
ZL		 265 mwifiex_dbg(adapter, CMD,
266 "%s: CMD\n", __func__);
4daffe35
AK		 267 atomic_dec(&card->tx_cmd_urb_pending);
268 adapter->cmd_sent = false;
269 } else {
acebe8c1
ZL		 270 mwifiex_dbg(adapter, DATA,
271 "%s: DATA\n", __func__);
4daffe35 272 atomic_dec(&card->tx_data_urb_pending);
47411a06 273 mwifiex_write_data_complete(adapter, context->skb, 0,
4daffe35
AK		 274 urb->status ? -1 : 0);
275 }
276
b2713f67 277 mwifiex_queue_main_work(adapter);
4daffe35
AK		 278
279 return;
280}
281
282static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size)
283{
284 struct mwifiex_adapter *adapter = ctx->adapter;
285 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
286
287 if (card->rx_cmd_ep != ctx->ep) {
288 ctx->skb = dev_alloc_skb(size);
289 if (!ctx->skb) {
acebe8c1
ZL		 290 mwifiex_dbg(adapter, ERROR,
291 "%s: dev_alloc_skb failed\n", __func__);
4daffe35
AK		 292 return -ENOMEM;
293 }
294 }
295
296 usb_fill_bulk_urb(ctx->urb, card->udev,
297 usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data,
298 size, mwifiex_usb_rx_complete, (void *)ctx);
299
300 if (card->rx_cmd_ep == ctx->ep)
301 atomic_inc(&card->rx_cmd_urb_pending);
302 else
303 atomic_inc(&card->rx_data_urb_pending);
304
305 if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) {
acebe8c1 306 mwifiex_dbg(adapter, ERROR, "usb_submit_urb failed\n");
4daffe35
AK		 307 dev_kfree_skb_any(ctx->skb);
308 ctx->skb = NULL;
309
310 if (card->rx_cmd_ep == ctx->ep)
311 atomic_dec(&card->rx_cmd_urb_pending);
312 else
313 atomic_dec(&card->rx_data_urb_pending);
314
315 return -1;
316 }
317
318 return 0;
319}
320
321static void mwifiex_usb_free(struct usb_card_rec *card)
322{
323 int i;
324
325 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
326 usb_kill_urb(card->rx_cmd.urb);
327
328 usb_free_urb(card->rx_cmd.urb);
329 card->rx_cmd.urb = NULL;
330
331 if (atomic_read(&card->rx_data_urb_pending))
332 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
333 if (card->rx_data_list[i].urb)
334 usb_kill_urb(card->rx_data_list[i].urb);
335
336 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
337 usb_free_urb(card->rx_data_list[i].urb);
338 card->rx_data_list[i].urb = NULL;
339 }
340
341 for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
342 usb_free_urb(card->tx_data_list[i].urb);
343 card->tx_data_list[i].urb = NULL;
344 }
345
346 usb_free_urb(card->tx_cmd.urb);
347 card->tx_cmd.urb = NULL;
348
349 return;
350}
351
352/* This function probes an mwifiex device and registers it. It allocates
353 * the card structure, initiates the device registration and initialization
354 * procedure by adding a logical interface.
355 */
356static int mwifiex_usb_probe(struct usb_interface *intf,
357 const struct usb_device_id *id)
358{
359 struct usb_device *udev = interface_to_usbdev(intf);
360 struct usb_host_interface *iface_desc = intf->cur_altsetting;
361 struct usb_endpoint_descriptor *epd;
362 int ret, i;
363 struct usb_card_rec *card;
364 u16 id_vendor, id_product, bcd_device, bcd_usb;
365
366 card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
367 if (!card)
368 return -ENOMEM;
369
370 id_vendor = le16_to_cpu(udev->descriptor.idVendor);
371 id_product = le16_to_cpu(udev->descriptor.idProduct);
372 bcd_device = le16_to_cpu(udev->descriptor.bcdDevice);
373 bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB);
374 pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n",
375 id_vendor, id_product, bcd_device);
376
377 /* PID_1 is used for firmware downloading only */
68458ded 378 switch (id_product) {
9e6f3f47 379 case USB8766_PID_1:
68458ded 380 case USB8797_PID_1:
eaa3d9fa 381 case USB8801_PID_1:
68458ded
YAP		 382 case USB8897_PID_1:
383 card->usb_boot_state = USB8XXX_FW_DNLD;
384 break;
9e6f3f47 385 case USB8766_PID_2:
68458ded 386 case USB8797_PID_2:
eaa3d9fa 387 case USB8801_PID_2:
68458ded
YAP		 388 case USB8897_PID_2:
389 card->usb_boot_state = USB8XXX_FW_READY;
390 break;
391 default:
fe3881cf 392 pr_warn("unknown id_product %#x\n", id_product);
68458ded
YAP		 393 card->usb_boot_state = USB8XXX_FW_DNLD;
394 break;
395 }
4daffe35
AK		 396
397 card->udev = udev;
398 card->intf = intf;
399
69797838 400 pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n",
4daffe35
AK		 401 udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass,
402 udev->descriptor.bDeviceSubClass,
403 udev->descriptor.bDeviceProtocol);
404
405 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
406 epd = &iface_desc->endpoint[i].desc;
407 if (usb_endpoint_dir_in(epd) &&
408 usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
409 usb_endpoint_xfer_bulk(epd)) {
410 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
411 le16_to_cpu(epd->wMaxPacketSize),
412 epd->bEndpointAddress);
413 card->rx_cmd_ep = usb_endpoint_num(epd);
414 atomic_set(&card->rx_cmd_urb_pending, 0);
415 }
416 if (usb_endpoint_dir_in(epd) &&
417 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
418 usb_endpoint_xfer_bulk(epd)) {
419 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
420 le16_to_cpu(epd->wMaxPacketSize),
421 epd->bEndpointAddress);
422 card->rx_data_ep = usb_endpoint_num(epd);
423 atomic_set(&card->rx_data_urb_pending, 0);
424 }
425 if (usb_endpoint_dir_out(epd) &&
426 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
427 usb_endpoint_xfer_bulk(epd)) {
428 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
429 le16_to_cpu(epd->wMaxPacketSize),
430 epd->bEndpointAddress);
431 card->tx_data_ep = usb_endpoint_num(epd);
432 atomic_set(&card->tx_data_urb_pending, 0);
433 }
434 if (usb_endpoint_dir_out(epd) &&
435 usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
436 usb_endpoint_xfer_bulk(epd)) {
437 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
438 le16_to_cpu(epd->wMaxPacketSize),
439 epd->bEndpointAddress);
440 card->tx_cmd_ep = usb_endpoint_num(epd);
441 atomic_set(&card->tx_cmd_urb_pending, 0);
442 card->bulk_out_maxpktsize =
443 le16_to_cpu(epd->wMaxPacketSize);
444 }
445 }
446
447 usb_set_intfdata(intf, card);
448
449 ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops,
450 MWIFIEX_USB);
451 if (ret) {
452 pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
453 usb_reset_device(udev);
454 kfree(card);
455 return ret;
456 }
457
458 usb_get_dev(udev);
459
460 return 0;
461}
462
463/* Kernel needs to suspend all functions separately. Therefore all
464 * registered functions must have drivers with suspend and resume
465 * methods. Failing that the kernel simply removes the whole card.
466 *
467 * If already not suspended, this function allocates and sends a
468 * 'host sleep activate' request to the firmware and turns off the traffic.
469 */
470static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
471{
472 struct usb_card_rec *card = usb_get_intfdata(intf);
473 struct mwifiex_adapter *adapter;
474 int i;
475
476 if (!card || !card->adapter) {
477 pr_err("%s: card or card->adapter is NULL\n", __func__);
478 return 0;
479 }
480 adapter = card->adapter;
481
482 if (unlikely(adapter->is_suspended))
acebe8c1
ZL		 483 mwifiex_dbg(adapter, WARN,
484 "Device already suspended\n");
4daffe35
AK		 485
486 mwifiex_enable_hs(adapter);
487
488 /* 'is_suspended' flag indicates device is suspended.
489 * It must be set here before the usb_kill_urb() calls. Reason
490 * is in the complete handlers, urb->status(= -ENOENT) and
491 * this flag is used in combination to distinguish between a
492 * 'suspended' state and a 'disconnect' one.
493 */
494 adapter->is_suspended = true;
c0dbba66 495 adapter->hs_enabling = false;
4daffe35 496
4daffe35
AK		 497 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
498 usb_kill_urb(card->rx_cmd.urb);
499
500 if (atomic_read(&card->rx_data_urb_pending))
501 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
502 if (card->rx_data_list[i].urb)
503 usb_kill_urb(card->rx_data_list[i].urb);
504
505 for (i = 0; i < MWIFIEX_TX_DATA_URB; i++)
506 if (card->tx_data_list[i].urb)
507 usb_kill_urb(card->tx_data_list[i].urb);
508
509 if (card->tx_cmd.urb)
510 usb_kill_urb(card->tx_cmd.urb);
511
512 return 0;
513}
514
515/* Kernel needs to suspend all functions separately. Therefore all
516 * registered functions must have drivers with suspend and resume
517 * methods. Failing that the kernel simply removes the whole card.
518 *
519 * If already not resumed, this function turns on the traffic and
520 * sends a 'host sleep cancel' request to the firmware.
521 */
522static int mwifiex_usb_resume(struct usb_interface *intf)
523{
524 struct usb_card_rec *card = usb_get_intfdata(intf);
525 struct mwifiex_adapter *adapter;
526 int i;
527
528 if (!card || !card->adapter) {
529 pr_err("%s: card or card->adapter is NULL\n", __func__);
530 return 0;
531 }
532 adapter = card->adapter;
533
534 if (unlikely(!adapter->is_suspended)) {
acebe8c1
ZL		 535 mwifiex_dbg(adapter, WARN,
536 "Device already resumed\n");
4daffe35
AK		 537 return 0;
538 }
539
540 /* Indicate device resumed. The netdev queue will be resumed only
541 * after the urbs have been re-submitted
542 */
543 adapter->is_suspended = false;
544
545 if (!atomic_read(&card->rx_data_urb_pending))
546 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
547 mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
548 MWIFIEX_RX_DATA_BUF_SIZE);
549
550 if (!atomic_read(&card->rx_cmd_urb_pending)) {
551 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
552 if (card->rx_cmd.skb)
553 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
554 MWIFIEX_RX_CMD_BUF_SIZE);
555 }
556
4daffe35
AK		 557 /* Disable Host Sleep */
558 if (adapter->hs_activated)
559 mwifiex_cancel_hs(mwifiex_get_priv(adapter,
560 MWIFIEX_BSS_ROLE_ANY),
561 MWIFIEX_ASYNC_CMD);
562
4daffe35
AK		 563 return 0;
564}
565
566static void mwifiex_usb_disconnect(struct usb_interface *intf)
567{
568 struct usb_card_rec *card = usb_get_intfdata(intf);
3fffd7c1 569 struct mwifiex_adapter *adapter;
4daffe35 570
3fffd7c1
AK		 571 if (!card || !card->adapter) {
572 pr_err("%s: card or card->adapter is NULL\n", __func__);
4daffe35
AK		 573 return;
574 }
575
3fffd7c1
AK		 576 adapter = card->adapter;
577 if (!adapter->priv_num)
578 return;
4daffe35 579
3fffd7c1
AK		 580 if (user_rmmod) {
581#ifdef CONFIG_PM
582 if (adapter->is_suspended)
583 mwifiex_usb_resume(intf);
584#endif
585
586 mwifiex_deauthenticate_all(adapter);
353d2a69 587
3fffd7c1
AK		 588 mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
589 MWIFIEX_BSS_ROLE_ANY),
590 MWIFIEX_FUNC_SHUTDOWN);
353d2a69 591 }
4daffe35 592
3fffd7c1
AK		 593 mwifiex_usb_free(card);
594
acebe8c1
ZL		 595 mwifiex_dbg(adapter, FATAL,
596 "%s: removing card\n", __func__);
3fffd7c1
AK		 597 mwifiex_remove_card(adapter, &add_remove_card_sem);
598
4daffe35
AK		 599 usb_set_intfdata(intf, NULL);
600 usb_put_dev(interface_to_usbdev(intf));
601 kfree(card);
602
603 return;
604}
605
606static struct usb_driver mwifiex_usb_driver = {
e4ceb0f4 607 .name = "mwifiex_usb",
4daffe35
AK		 608 .probe = mwifiex_usb_probe,
609 .disconnect = mwifiex_usb_disconnect,
610 .id_table = mwifiex_usb_table,
611 .suspend = mwifiex_usb_suspend,
612 .resume = mwifiex_usb_resume,
3fffd7c1 613 .soft_unbind = 1,
4daffe35
AK		 614};
615
616static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
617{
618 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
619 int i;
620
621 card->tx_cmd.adapter = adapter;
622 card->tx_cmd.ep = card->tx_cmd_ep;
623
624 card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
625 if (!card->tx_cmd.urb) {
acebe8c1
ZL		 626 mwifiex_dbg(adapter, ERROR,
627 "tx_cmd.urb allocation failed\n");
4daffe35
AK		 628 return -ENOMEM;
629 }
630
631 card->tx_data_ix = 0;
632
633 for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
634 card->tx_data_list[i].adapter = adapter;
635 card->tx_data_list[i].ep = card->tx_data_ep;
636
637 card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
638 if (!card->tx_data_list[i].urb) {
acebe8c1
ZL		 639 mwifiex_dbg(adapter, ERROR,
640 "tx_data_list[] urb allocation failed\n");
4daffe35
AK		 641 return -ENOMEM;
642 }
643 }
644
645 return 0;
646}
647
648static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
649{
650 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
651 int i;
652
653 card->rx_cmd.adapter = adapter;
654 card->rx_cmd.ep = card->rx_cmd_ep;
655
656 card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
657 if (!card->rx_cmd.urb) {
acebe8c1 658 mwifiex_dbg(adapter, ERROR, "rx_cmd.urb allocation failed\n");
4daffe35
AK		 659 return -ENOMEM;
660 }
661
662 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
acebe8c1 663 if (!card->rx_cmd.skb)
4daffe35 664 return -ENOMEM;
4daffe35
AK		 665
666 if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE))
667 return -1;
668
669 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
670 card->rx_data_list[i].adapter = adapter;
671 card->rx_data_list[i].ep = card->rx_data_ep;
672
673 card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
674 if (!card->rx_data_list[i].urb) {
acebe8c1
ZL		 675 mwifiex_dbg(adapter, ERROR,
676 "rx_data_list[] urb allocation failed\n");
4daffe35
AK		 677 return -1;
678 }
679 if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
680 MWIFIEX_RX_DATA_BUF_SIZE))
681 return -1;
682 }
683
684 return 0;
685}
686
687static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
688 u32 *len, u8 ep, u32 timeout)
689{
690 struct usb_card_rec *card = adapter->card;
691 int actual_length, ret;
692
693 if (!(*len % card->bulk_out_maxpktsize))
694 (*len)++;
695
696 /* Send the data block */
697 ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf,
698 *len, &actual_length, timeout);
699 if (ret) {
acebe8c1
ZL		 700 mwifiex_dbg(adapter, ERROR,
701 "usb_bulk_msg for tx failed: %d\n", ret);
5b2e2ecc 702 return ret;
4daffe35
AK		 703 }
704
705 *len = actual_length;
706
707 return ret;
708}
709
710static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
711 u32 *len, u8 ep, u32 timeout)
712{
713 struct usb_card_rec *card = adapter->card;
714 int actual_length, ret;
715
716 /* Receive the data response */
717 ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf,
718 *len, &actual_length, timeout);
719 if (ret) {
acebe8c1
ZL		 720 mwifiex_dbg(adapter, ERROR,
721 "usb_bulk_msg for rx failed: %d\n", ret);
5b2e2ecc 722 return ret;
4daffe35
AK		 723 }
724
725 *len = actual_length;
726
727 return ret;
728}
729
730/* This function write a command/data packet to card. */
731static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep,
732 struct sk_buff *skb,
733 struct mwifiex_tx_param *tx_param)
734{
735 struct usb_card_rec *card = adapter->card;
736 struct urb_context *context;
737 u8 *data = (u8 *)skb->data;
738 struct urb *tx_urb;
739
740 if (adapter->is_suspended) {
acebe8c1
ZL		 741 mwifiex_dbg(adapter, ERROR,
742 "%s: not allowed while suspended\n", __func__);
4daffe35
AK		 743 return -1;
744 }
745
746 if (adapter->surprise_removed) {
acebe8c1 747 mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__);
4daffe35
AK		 748 return -1;
749 }
750
751 if (ep == card->tx_data_ep &&
752 atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) {
753 return -EBUSY;
754 }
755
acebe8c1 756 mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep);
4daffe35
AK		 757
758 if (ep == card->tx_cmd_ep) {
759 context = &card->tx_cmd;
760 } else {
761 if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB)
762 card->tx_data_ix = 0;
763 context = &card->tx_data_list[card->tx_data_ix++];
764 }
765
766 context->adapter = adapter;
767 context->ep = ep;
768 context->skb = skb;
769 tx_urb = context->urb;
770
771 usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep),
772 data, skb->len, mwifiex_usb_tx_complete,
773 (void *)context);
774
775 tx_urb->transfer_flags |= URB_ZERO_PACKET;
776
777 if (ep == card->tx_cmd_ep)
778 atomic_inc(&card->tx_cmd_urb_pending);
779 else
780 atomic_inc(&card->tx_data_urb_pending);
781
782 if (usb_submit_urb(tx_urb, GFP_ATOMIC)) {
acebe8c1
ZL		 783 mwifiex_dbg(adapter, ERROR,
784 "%s: usb_submit_urb failed\n", __func__);
4daffe35
AK		 785 if (ep == card->tx_cmd_ep) {
786 atomic_dec(&card->tx_cmd_urb_pending);
787 } else {
788 atomic_dec(&card->tx_data_urb_pending);
789 if (card->tx_data_ix)
790 card->tx_data_ix--;
791 else
792 card->tx_data_ix = MWIFIEX_TX_DATA_URB;
793 }
794
795 return -1;
796 } else {
797 if (ep == card->tx_data_ep &&
798 atomic_read(&card->tx_data_urb_pending) ==
799 MWIFIEX_TX_DATA_URB)
800 return -ENOSR;
801 }
802
803 return -EINPROGRESS;
804}
805
806/* This function register usb device and initialize parameter. */
807static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
808{
809 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
810
811 card->adapter = adapter;
812 adapter->dev = &card->udev->dev;
4daffe35 813
68458ded
YAP		 814 switch (le16_to_cpu(card->udev->descriptor.idProduct)) {
815 case USB8897_PID_1:
816 case USB8897_PID_2:
828cf222 817 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K;
68458ded 818 strcpy(adapter->fw_name, USB8897_DEFAULT_FW_NAME);
1fe192d8 819 adapter->ext_scan = true;
68458ded 820 break;
9e6f3f47
KE		 821 case USB8766_PID_1:
822 case USB8766_PID_2:
823 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
824 strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME);
1fe192d8 825 adapter->ext_scan = true;
9e6f3f47 826 break;
eaa3d9fa
YAP		 827 case USB8801_PID_1:
828 case USB8801_PID_2:
829 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
830 strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME);
1fe192d8 831 adapter->ext_scan = false;
eaa3d9fa 832 break;
68458ded
YAP		 833 case USB8797_PID_1:
834 case USB8797_PID_2:
835 default:
828cf222 836 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
68458ded
YAP		 837 strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME);
838 break;
839 }
840
4daffe35
AK		 841 return 0;
842}
843
2739a95d
AK		 844static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
845{
846 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
847
353d2a69 848 card->adapter = NULL;
2739a95d
AK		 849}
850
4daffe35
AK		 851static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
852 struct mwifiex_fw_image *fw)
853{
854 int ret = 0;
855 u8 *firmware = fw->fw_buf, *recv_buff;
68458ded 856 u32 retries = USB8XXX_FW_MAX_RETRY, dlen;
4daffe35
AK		 857 u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0;
858 struct fw_data *fwdata;
859 struct fw_sync_header sync_fw;
860 u8 check_winner = 1;
861
862 if (!firmware) {
acebe8c1
ZL		 863 mwifiex_dbg(adapter, ERROR,
864 "No firmware image found! Terminating download\n");
4daffe35
AK		 865 ret = -1;
866 goto fw_exit;
867 }
868
869 /* Allocate memory for transmit */
870 fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL);
871 if (!fwdata)
872 goto fw_exit;
873
874 /* Allocate memory for receive */
875 recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL);
876 if (!recv_buff)
877 goto cleanup;
878
879 do {
880 /* Send pseudo data to check winner status first */
881 if (check_winner) {
882 memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header));
883 dlen = 0;
884 } else {
885 /* copy the header of the fw_data to get the length */
fc40ca92
SL		 886 memcpy(&fwdata->fw_hdr, &firmware[tlen],
887 sizeof(struct fw_header));
4daffe35
AK		 888
889 dlen = le32_to_cpu(fwdata->fw_hdr.data_len);
890 dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd);
891 tlen += sizeof(struct fw_header);
892
fc40ca92 893 memcpy(fwdata->data, &firmware[tlen], dlen);
4daffe35
AK		 894
895 fwdata->seq_num = cpu_to_le32(fw_seqnum);
896 tlen += dlen;
897 }
898
899 /* If the send/receive fails or CRC occurs then retry */
900 while (retries--) {
901 u8 *buf = (u8 *)fwdata;
902 u32 len = FW_DATA_XMIT_SIZE;
903
904 /* send the firmware block */
905 ret = mwifiex_write_data_sync(adapter, buf, &len,
906 MWIFIEX_USB_EP_CMD_EVENT,
907 MWIFIEX_USB_TIMEOUT);
908 if (ret) {
acebe8c1
ZL		 909 mwifiex_dbg(adapter, ERROR,
910 "write_data_sync: failed: %d\n",
911 ret);
4daffe35
AK		 912 continue;
913 }
914
915 buf = recv_buff;
916 len = FW_DNLD_RX_BUF_SIZE;
917
918 /* Receive the firmware block response */
919 ret = mwifiex_read_data_sync(adapter, buf, &len,
920 MWIFIEX_USB_EP_CMD_EVENT,
921 MWIFIEX_USB_TIMEOUT);
922 if (ret) {
acebe8c1
ZL		 923 mwifiex_dbg(adapter, ERROR,
924 "read_data_sync: failed: %d\n",
925 ret);
4daffe35
AK		 926 continue;
927 }
928
929 memcpy(&sync_fw, recv_buff,
930 sizeof(struct fw_sync_header));
931
932 /* check 1st firmware block resp for highest bit set */
933 if (check_winner) {
934 if (le32_to_cpu(sync_fw.cmd) & 0x80000000) {
acebe8c1
ZL		 935 mwifiex_dbg(adapter, WARN,
936 "USB is not the winner %#x\n",
937 sync_fw.cmd);
4daffe35
AK		 938
939 /* returning success */
940 ret = 0;
941 goto cleanup;
942 }
943
acebe8c1
ZL		 944 mwifiex_dbg(adapter, MSG,
945 "start to download FW...\n");
4daffe35
AK		 946
947 check_winner = 0;
948 break;
949 }
950
951 /* check the firmware block response for CRC errors */
952 if (sync_fw.cmd) {
acebe8c1
ZL		 953 mwifiex_dbg(adapter, ERROR,
954 "FW received block with CRC %#x\n",
955 sync_fw.cmd);
4daffe35
AK		 956 ret = -1;
957 continue;
958 }
959
68458ded 960 retries = USB8XXX_FW_MAX_RETRY;
4daffe35
AK		 961 break;
962 }
963 fw_seqnum++;
964 } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries);
965
966cleanup:
acebe8c1
ZL		 967 mwifiex_dbg(adapter, MSG,
968 "info: FW download over, size %d bytes\n", tlen);
4daffe35
AK		 969
970 kfree(recv_buff);
971 kfree(fwdata);
972
973 if (retries)
974 ret = 0;
975fw_exit:
976 return ret;
977}
978
979static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
980 struct mwifiex_fw_image *fw)
981{
982 int ret;
983 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
984
68458ded 985 if (card->usb_boot_state == USB8XXX_FW_DNLD) {
4daffe35
AK		 986 ret = mwifiex_prog_fw_w_helper(adapter, fw);
987 if (ret)
988 return -1;
989
990 /* Boot state changes after successful firmware download */
68458ded 991 if (card->usb_boot_state == USB8XXX_FW_DNLD)
4daffe35
AK		 992 return -1;
993 }
994
995 ret = mwifiex_usb_rx_init(adapter);
996 if (!ret)
997 ret = mwifiex_usb_tx_init(adapter);
998
999 return ret;
1000}
1001
1002static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep)
1003{
1004 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
1005
1006 skb_push(card->rx_cmd.skb, INTF_HEADER_LEN);
1007 if ((ep == card->rx_cmd_ep) &&
1008 (!atomic_read(&card->rx_cmd_urb_pending)))
1009 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
1010 MWIFIEX_RX_CMD_BUF_SIZE);
1011
1012 return;
1013}
1014
1015static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter,
1016 struct sk_buff *skb)
1017{
4daffe35
AK		 1018 mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT);
1019
1020 return 0;
1021}
1022
4daffe35
AK		 1023/* This function wakes up the card. */
1024static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
1025{
1026 /* Simulation of HS_AWAKE event */
1027 adapter->pm_wakeup_fw_try = false;
6e9344fd 1028 del_timer(&adapter->wakeup_timer);
4daffe35
AK		 1029 adapter->pm_wakeup_card_req = false;
1030 adapter->ps_state = PS_STATE_AWAKE;
1031
1032 return 0;
1033}
1034
cf6a64fd
AK		 1035static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter)
1036{
1037 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
1038 int i;
1039 struct urb_context *ctx;
1040
1041 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
1042 if (card->rx_data_list[i].skb)
1043 continue;
1044 ctx = &card->rx_data_list[i];
1045 mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE);
1046 }
1047}
1048
61754303
XH		 1049/* This function is called after the card has woken up. */
1050static inline int
1051mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
1052{
1053 return 0;
1054}
1055
4daffe35
AK		 1056static struct mwifiex_if_ops usb_ops = {
1057 .register_dev = mwifiex_register_dev,
2739a95d 1058 .unregister_dev = mwifiex_unregister_dev,
4daffe35
AK		 1059 .wakeup = mwifiex_pm_wakeup_card,
1060 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
1061
1062 /* USB specific */
1063 .dnld_fw = mwifiex_usb_dnld_fw,
1064 .cmdrsp_complete = mwifiex_usb_cmd_event_complete,
1065 .event_complete = mwifiex_usb_cmd_event_complete,
4daffe35 1066 .host_to_card = mwifiex_usb_host_to_card,
cf6a64fd 1067 .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs,
4daffe35
AK		 1068};
1069
1070/* This function initializes the USB driver module.
1071 *
1072 * This initiates the semaphore and registers the device with
1073 * USB bus.
1074 */
1075static int mwifiex_usb_init_module(void)
1076{
1077 int ret;
1078
1079 pr_debug("Marvell USB8797 Driver\n");
1080
1081 sema_init(&add_remove_card_sem, 1);
1082
1083 ret = usb_register(&mwifiex_usb_driver);
1084 if (ret)
1085 pr_err("Driver register failed!\n");
1086 else
1087 pr_debug("info: Driver registered successfully!\n");
1088
1089 return ret;
1090}
1091
1092/* This function cleans up the USB driver.
1093 *
1094 * The following major steps are followed in .disconnect for cleanup:
1095 * - Resume the device if its suspended
1096 * - Disconnect the device if connected
1097 * - Shutdown the firmware
1098 * - Unregister the device from USB bus.
1099 */
1100static void mwifiex_usb_cleanup_module(void)
1101{
1102 if (!down_interruptible(&add_remove_card_sem))
1103 up(&add_remove_card_sem);
1104
3fffd7c1
AK		 1105 /* set the flag as user is removing this module */
1106 user_rmmod = 1;
4daffe35
AK		 1107
1108 usb_deregister(&mwifiex_usb_driver);
1109}
1110
1111module_init(mwifiex_usb_init_module);
1112module_exit(mwifiex_usb_cleanup_module);
1113
1114MODULE_AUTHOR("Marvell International Ltd.");
1115MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION);
1116MODULE_VERSION(USB_VERSION);
1117MODULE_LICENSE("GPL v2");
9e6f3f47 1118MODULE_FIRMWARE(USB8766_DEFAULT_FW_NAME);
68458ded 1119MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME);
eaa3d9fa 1120MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME);
68458ded 1121MODULE_FIRMWARE(USB8897_DEFAULT_FW_NAME);
Linux kernel - Deliverables
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