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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 u8 user_rmmod; | |
26 | static struct mwifiex_if_ops usb_ops; | |
27 | static struct semaphore add_remove_card_sem; | |
28 | ||
29 | static struct usb_device_id mwifiex_usb_table[] = { | |
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, | |
38 | USB_CLASS_VENDOR_SPEC, | |
39 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, | |
40 | { } /* Terminating entry */ | |
41 | }; | |
42 | ||
43 | MODULE_DEVICE_TABLE(usb, mwifiex_usb_table); | |
44 | ||
45 | static 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 | */ | |
50 | static 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; | |
56 | int ret; | |
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"); | |
77 | ret = -1; | |
78 | goto exit_restore_skb; | |
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); | |
85 | ret = 0; | |
86 | goto exit_restore_skb; | |
87 | } | |
88 | ret = -1; | |
89 | goto exit_restore_skb; | |
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"); | |
98 | ret = -1; | |
99 | goto exit_restore_skb; | |
100 | } | |
101 | skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); | |
102 | adapter->event_cause = le32_to_cpu(tmp); | |
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"); | |
107 | ret = -1; | |
108 | goto exit_restore_skb; | |
109 | } | |
110 | ||
111 | memcpy(adapter->event_body, skb->data + | |
112 | MWIFIEX_EVENT_HEADER_LEN, skb->len); | |
113 | ||
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; | |
137 | ||
138 | exit_restore_skb: | |
139 | /* The buffer will be reused for further cmds/events */ | |
140 | skb_push(skb, INTF_HEADER_LEN); | |
141 | ||
142 | return ret; | |
143 | } | |
144 | ||
145 | static 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 | ||
219 | setup_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 | ||
230 | static 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); | |
245 | mwifiex_write_data_complete(adapter, context->skb, 0, | |
246 | urb->status ? -1 : 0); | |
247 | } | |
248 | ||
249 | queue_work(adapter->workqueue, &adapter->main_work); | |
250 | ||
251 | return; | |
252 | } | |
253 | ||
254 | static 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 | ||
293 | static 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 | */ | |
328 | static 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 */ | |
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 | } | |
364 | ||
365 | card->udev = udev; | |
366 | card->intf = intf; | |
367 | ||
368 | pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n", | |
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 | */ | |
438 | static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) | |
439 | { | |
440 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
441 | struct mwifiex_adapter *adapter; | |
442 | int i; | |
443 | ||
444 | if (!card || !card->adapter) { | |
445 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
446 | return 0; | |
447 | } | |
448 | adapter = card->adapter; | |
449 | ||
450 | if (unlikely(adapter->is_suspended)) | |
451 | dev_warn(adapter->dev, "Device already suspended\n"); | |
452 | ||
453 | mwifiex_enable_hs(adapter); | |
454 | ||
455 | /* 'is_suspended' flag indicates device is suspended. | |
456 | * It must be set here before the usb_kill_urb() calls. Reason | |
457 | * is in the complete handlers, urb->status(= -ENOENT) and | |
458 | * this flag is used in combination to distinguish between a | |
459 | * 'suspended' state and a 'disconnect' one. | |
460 | */ | |
461 | adapter->is_suspended = true; | |
462 | adapter->hs_enabling = false; | |
463 | ||
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 | */ | |
489 | static 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 | ||
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 | ||
529 | return 0; | |
530 | } | |
531 | ||
532 | static void mwifiex_usb_disconnect(struct usb_interface *intf) | |
533 | { | |
534 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
535 | struct mwifiex_adapter *adapter; | |
536 | ||
537 | if (!card || !card->adapter) { | |
538 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
539 | return; | |
540 | } | |
541 | ||
542 | adapter = card->adapter; | |
543 | if (!adapter->priv_num) | |
544 | return; | |
545 | ||
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); | |
553 | ||
554 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, | |
555 | MWIFIEX_BSS_ROLE_ANY), | |
556 | MWIFIEX_FUNC_SHUTDOWN); | |
557 | } | |
558 | ||
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 | ||
564 | usb_set_intfdata(intf, NULL); | |
565 | usb_put_dev(interface_to_usbdev(intf)); | |
566 | kfree(card); | |
567 | ||
568 | return; | |
569 | } | |
570 | ||
571 | static struct usb_driver mwifiex_usb_driver = { | |
572 | .name = "mwifiex_usb", | |
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, | |
578 | .soft_unbind = 1, | |
579 | }; | |
580 | ||
581 | static 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 | ||
612 | static 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 | ||
653 | static 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); | |
667 | return ret; | |
668 | } | |
669 | ||
670 | *len = actual_length; | |
671 | ||
672 | return ret; | |
673 | } | |
674 | ||
675 | static 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); | |
686 | return ret; | |
687 | } | |
688 | ||
689 | *len = actual_length; | |
690 | ||
691 | return ret; | |
692 | } | |
693 | ||
694 | /* This function write a command/data packet to card. */ | |
695 | static 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. */ | |
770 | static 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; | |
776 | ||
777 | switch (le16_to_cpu(card->udev->descriptor.idProduct)) { | |
778 | case USB8897_PID_1: | |
779 | case USB8897_PID_2: | |
780 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K; | |
781 | strcpy(adapter->fw_name, USB8897_DEFAULT_FW_NAME); | |
782 | break; | |
783 | case USB8797_PID_1: | |
784 | case USB8797_PID_2: | |
785 | default: | |
786 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; | |
787 | strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); | |
788 | break; | |
789 | } | |
790 | ||
791 | return 0; | |
792 | } | |
793 | ||
794 | static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) | |
795 | { | |
796 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
797 | ||
798 | card->adapter = NULL; | |
799 | } | |
800 | ||
801 | static 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; | |
806 | u32 retries = USB8XXX_FW_MAX_RETRY, dlen; | |
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 */ | |
836 | memcpy(&fwdata->fw_hdr, &firmware[tlen], | |
837 | sizeof(struct fw_header)); | |
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 | ||
843 | memcpy(fwdata->data, &firmware[tlen], dlen); | |
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 | ||
908 | retries = USB8XXX_FW_MAX_RETRY; | |
909 | break; | |
910 | } | |
911 | fw_seqnum++; | |
912 | } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); | |
913 | ||
914 | cleanup: | |
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; | |
922 | fw_exit: | |
923 | return ret; | |
924 | } | |
925 | ||
926 | static 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 | ||
932 | if (card->usb_boot_state == USB8XXX_FW_DNLD) { | |
933 | ret = mwifiex_prog_fw_w_helper(adapter, fw); | |
934 | if (ret) | |
935 | return -1; | |
936 | ||
937 | /* Boot state changes after successful firmware download */ | |
938 | if (card->usb_boot_state == USB8XXX_FW_DNLD) | |
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 | ||
949 | static 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 | ||
962 | static 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 | ||
971 | static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter) | |
972 | { | |
973 | atomic_dec(&adapter->rx_pending); | |
974 | ||
975 | return 0; | |
976 | } | |
977 | ||
978 | /* This function wakes up the card. */ | |
979 | static 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 | ||
989 | static struct mwifiex_if_ops usb_ops = { | |
990 | .register_dev = mwifiex_register_dev, | |
991 | .unregister_dev = mwifiex_unregister_dev, | |
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 | */ | |
1008 | static 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 | */ | |
1033 | static void mwifiex_usb_cleanup_module(void) | |
1034 | { | |
1035 | if (!down_interruptible(&add_remove_card_sem)) | |
1036 | up(&add_remove_card_sem); | |
1037 | ||
1038 | /* set the flag as user is removing this module */ | |
1039 | user_rmmod = 1; | |
1040 | ||
1041 | usb_deregister(&mwifiex_usb_driver); | |
1042 | } | |
1043 | ||
1044 | module_init(mwifiex_usb_init_module); | |
1045 | module_exit(mwifiex_usb_cleanup_module); | |
1046 | ||
1047 | MODULE_AUTHOR("Marvell International Ltd."); | |
1048 | MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); | |
1049 | MODULE_VERSION(USB_VERSION); | |
1050 | MODULE_LICENSE("GPL v2"); | |
1051 | MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME); | |
1052 | MODULE_FIRMWARE(USB8897_DEFAULT_FW_NAME); |