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4daffe35 AK |
1 | /* |
2 | * Marvell Wireless LAN device driver: USB specific handling | |
3 | * | |
4 | * Copyright (C) 2012, Marvell International Ltd. | |
5 | * | |
6 | * This software file (the "File") is distributed by Marvell International | |
7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 | |
8 | * (the "License"). You may use, redistribute and/or modify this File in | |
9 | * accordance with the terms and conditions of the License, a copy of which | |
10 | * is available by writing to the Free Software Foundation, Inc., | |
11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the | |
12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. | |
13 | * | |
14 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE | |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE | |
16 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about | |
17 | * this warranty disclaimer. | |
18 | */ | |
19 | ||
20 | #include "main.h" | |
21 | #include "usb.h" | |
22 | ||
23 | #define USB_VERSION "1.0" | |
24 | ||
25 | static const char usbdriver_name[] = "usb8797"; | |
26 | ||
27 | static u8 user_rmmod; | |
28 | static struct mwifiex_if_ops usb_ops; | |
29 | static struct semaphore add_remove_card_sem; | |
30 | ||
31 | static struct usb_device_id mwifiex_usb_table[] = { | |
32 | {USB_DEVICE(USB8797_VID, USB8797_PID_1)}, | |
33 | {USB_DEVICE_AND_INTERFACE_INFO(USB8797_VID, USB8797_PID_2, | |
34 | USB_CLASS_VENDOR_SPEC, | |
35 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, | |
36 | { } /* Terminating entry */ | |
37 | }; | |
38 | ||
39 | MODULE_DEVICE_TABLE(usb, mwifiex_usb_table); | |
40 | ||
41 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size); | |
42 | ||
43 | /* This function handles received packet. Necessary action is taken based on | |
44 | * cmd/event/data. | |
45 | */ | |
46 | static int mwifiex_usb_recv(struct mwifiex_adapter *adapter, | |
47 | struct sk_buff *skb, u8 ep) | |
48 | { | |
49 | struct device *dev = adapter->dev; | |
50 | u32 recv_type; | |
51 | __le32 tmp; | |
52 | ||
53 | if (adapter->hs_activated) | |
54 | mwifiex_process_hs_config(adapter); | |
55 | ||
56 | if (skb->len < INTF_HEADER_LEN) { | |
57 | dev_err(dev, "%s: invalid skb->len\n", __func__); | |
58 | return -1; | |
59 | } | |
60 | ||
61 | switch (ep) { | |
62 | case MWIFIEX_USB_EP_CMD_EVENT: | |
63 | dev_dbg(dev, "%s: EP_CMD_EVENT\n", __func__); | |
64 | skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN); | |
65 | recv_type = le32_to_cpu(tmp); | |
66 | skb_pull(skb, INTF_HEADER_LEN); | |
67 | ||
68 | switch (recv_type) { | |
69 | case MWIFIEX_USB_TYPE_CMD: | |
70 | if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) { | |
71 | dev_err(dev, "CMD: skb->len too large\n"); | |
72 | return -1; | |
73 | } else if (!adapter->curr_cmd) { | |
74 | dev_dbg(dev, "CMD: no curr_cmd\n"); | |
75 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) { | |
76 | mwifiex_process_sleep_confirm_resp( | |
77 | adapter, skb->data, | |
78 | skb->len); | |
79 | return 0; | |
80 | } | |
81 | return -1; | |
82 | } | |
83 | ||
84 | adapter->curr_cmd->resp_skb = skb; | |
85 | adapter->cmd_resp_received = true; | |
86 | break; | |
87 | case MWIFIEX_USB_TYPE_EVENT: | |
88 | if (skb->len < sizeof(u32)) { | |
89 | dev_err(dev, "EVENT: skb->len too small\n"); | |
90 | return -1; | |
91 | } | |
92 | skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); | |
93 | adapter->event_cause = le32_to_cpu(tmp); | |
94 | skb_pull(skb, sizeof(u32)); | |
95 | dev_dbg(dev, "event_cause %#x\n", adapter->event_cause); | |
96 | ||
97 | if (skb->len > MAX_EVENT_SIZE) { | |
98 | dev_err(dev, "EVENT: event body too large\n"); | |
99 | return -1; | |
100 | } | |
101 | ||
102 | skb_copy_from_linear_data(skb, adapter->event_body, | |
103 | skb->len); | |
104 | adapter->event_received = true; | |
105 | adapter->event_skb = skb; | |
106 | break; | |
107 | default: | |
108 | dev_err(dev, "unknown recv_type %#x\n", recv_type); | |
109 | return -1; | |
110 | } | |
111 | break; | |
112 | case MWIFIEX_USB_EP_DATA: | |
113 | dev_dbg(dev, "%s: EP_DATA\n", __func__); | |
114 | if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) { | |
115 | dev_err(dev, "DATA: skb->len too large\n"); | |
116 | return -1; | |
117 | } | |
118 | skb_queue_tail(&adapter->usb_rx_data_q, skb); | |
119 | adapter->data_received = true; | |
120 | break; | |
121 | default: | |
122 | dev_err(dev, "%s: unknown endport %#x\n", __func__, ep); | |
123 | return -1; | |
124 | } | |
125 | ||
126 | return -EINPROGRESS; | |
127 | } | |
128 | ||
129 | static void mwifiex_usb_rx_complete(struct urb *urb) | |
130 | { | |
131 | struct urb_context *context = (struct urb_context *)urb->context; | |
132 | struct mwifiex_adapter *adapter = context->adapter; | |
133 | struct sk_buff *skb = context->skb; | |
134 | struct usb_card_rec *card; | |
135 | int recv_length = urb->actual_length; | |
136 | int size, status; | |
137 | ||
138 | if (!adapter || !adapter->card) { | |
139 | pr_err("mwifiex adapter or card structure is not valid\n"); | |
140 | return; | |
141 | } | |
142 | ||
143 | card = (struct usb_card_rec *)adapter->card; | |
144 | if (card->rx_cmd_ep == context->ep) | |
145 | atomic_dec(&card->rx_cmd_urb_pending); | |
146 | else | |
147 | atomic_dec(&card->rx_data_urb_pending); | |
148 | ||
149 | if (recv_length) { | |
150 | if (urb->status || (adapter->surprise_removed)) { | |
151 | dev_err(adapter->dev, | |
152 | "URB status is failed: %d\n", urb->status); | |
153 | /* Do not free skb in case of command ep */ | |
154 | if (card->rx_cmd_ep != context->ep) | |
155 | dev_kfree_skb_any(skb); | |
156 | goto setup_for_next; | |
157 | } | |
158 | if (skb->len > recv_length) | |
159 | skb_trim(skb, recv_length); | |
160 | else | |
161 | skb_put(skb, recv_length - skb->len); | |
162 | ||
163 | atomic_inc(&adapter->rx_pending); | |
164 | status = mwifiex_usb_recv(adapter, skb, context->ep); | |
165 | ||
166 | dev_dbg(adapter->dev, "info: recv_length=%d, status=%d\n", | |
167 | recv_length, status); | |
168 | if (status == -EINPROGRESS) { | |
169 | queue_work(adapter->workqueue, &adapter->main_work); | |
170 | ||
171 | /* urb for data_ep is re-submitted now; | |
172 | * urb for cmd_ep will be re-submitted in callback | |
173 | * mwifiex_usb_recv_complete | |
174 | */ | |
175 | if (card->rx_cmd_ep == context->ep) | |
176 | return; | |
177 | } else { | |
178 | atomic_dec(&adapter->rx_pending); | |
179 | if (status == -1) | |
180 | dev_err(adapter->dev, | |
181 | "received data processing failed!\n"); | |
182 | ||
183 | /* Do not free skb in case of command ep */ | |
184 | if (card->rx_cmd_ep != context->ep) | |
185 | dev_kfree_skb_any(skb); | |
186 | } | |
187 | } else if (urb->status) { | |
188 | if (!adapter->is_suspended) { | |
189 | dev_warn(adapter->dev, | |
190 | "Card is removed: %d\n", urb->status); | |
191 | adapter->surprise_removed = true; | |
192 | } | |
193 | dev_kfree_skb_any(skb); | |
194 | return; | |
195 | } else { | |
196 | /* Do not free skb in case of command ep */ | |
197 | if (card->rx_cmd_ep != context->ep) | |
198 | dev_kfree_skb_any(skb); | |
199 | ||
200 | /* fall through setup_for_next */ | |
201 | } | |
202 | ||
203 | setup_for_next: | |
204 | if (card->rx_cmd_ep == context->ep) | |
205 | size = MWIFIEX_RX_CMD_BUF_SIZE; | |
206 | else | |
207 | size = MWIFIEX_RX_DATA_BUF_SIZE; | |
208 | ||
209 | mwifiex_usb_submit_rx_urb(context, size); | |
210 | ||
211 | return; | |
212 | } | |
213 | ||
214 | static void mwifiex_usb_tx_complete(struct urb *urb) | |
215 | { | |
216 | struct urb_context *context = (struct urb_context *)(urb->context); | |
217 | struct mwifiex_adapter *adapter = context->adapter; | |
218 | struct usb_card_rec *card = adapter->card; | |
219 | ||
220 | dev_dbg(adapter->dev, "%s: status: %d\n", __func__, urb->status); | |
221 | ||
222 | if (context->ep == card->tx_cmd_ep) { | |
223 | dev_dbg(adapter->dev, "%s: CMD\n", __func__); | |
224 | atomic_dec(&card->tx_cmd_urb_pending); | |
225 | adapter->cmd_sent = false; | |
226 | } else { | |
227 | dev_dbg(adapter->dev, "%s: DATA\n", __func__); | |
228 | atomic_dec(&card->tx_data_urb_pending); | |
229 | mwifiex_write_data_complete(adapter, context->skb, | |
230 | urb->status ? -1 : 0); | |
231 | } | |
232 | ||
233 | queue_work(adapter->workqueue, &adapter->main_work); | |
234 | ||
235 | return; | |
236 | } | |
237 | ||
238 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size) | |
239 | { | |
240 | struct mwifiex_adapter *adapter = ctx->adapter; | |
241 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
242 | ||
243 | if (card->rx_cmd_ep != ctx->ep) { | |
244 | ctx->skb = dev_alloc_skb(size); | |
245 | if (!ctx->skb) { | |
246 | dev_err(adapter->dev, | |
247 | "%s: dev_alloc_skb failed\n", __func__); | |
248 | return -ENOMEM; | |
249 | } | |
250 | } | |
251 | ||
252 | usb_fill_bulk_urb(ctx->urb, card->udev, | |
253 | usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data, | |
254 | size, mwifiex_usb_rx_complete, (void *)ctx); | |
255 | ||
256 | if (card->rx_cmd_ep == ctx->ep) | |
257 | atomic_inc(&card->rx_cmd_urb_pending); | |
258 | else | |
259 | atomic_inc(&card->rx_data_urb_pending); | |
260 | ||
261 | if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) { | |
262 | dev_err(adapter->dev, "usb_submit_urb failed\n"); | |
263 | dev_kfree_skb_any(ctx->skb); | |
264 | ctx->skb = NULL; | |
265 | ||
266 | if (card->rx_cmd_ep == ctx->ep) | |
267 | atomic_dec(&card->rx_cmd_urb_pending); | |
268 | else | |
269 | atomic_dec(&card->rx_data_urb_pending); | |
270 | ||
271 | return -1; | |
272 | } | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
277 | static void mwifiex_usb_free(struct usb_card_rec *card) | |
278 | { | |
279 | int i; | |
280 | ||
281 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) | |
282 | usb_kill_urb(card->rx_cmd.urb); | |
283 | ||
284 | usb_free_urb(card->rx_cmd.urb); | |
285 | card->rx_cmd.urb = NULL; | |
286 | ||
287 | if (atomic_read(&card->rx_data_urb_pending)) | |
288 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
289 | if (card->rx_data_list[i].urb) | |
290 | usb_kill_urb(card->rx_data_list[i].urb); | |
291 | ||
292 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { | |
293 | usb_free_urb(card->rx_data_list[i].urb); | |
294 | card->rx_data_list[i].urb = NULL; | |
295 | } | |
296 | ||
297 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { | |
298 | usb_free_urb(card->tx_data_list[i].urb); | |
299 | card->tx_data_list[i].urb = NULL; | |
300 | } | |
301 | ||
302 | usb_free_urb(card->tx_cmd.urb); | |
303 | card->tx_cmd.urb = NULL; | |
304 | ||
305 | return; | |
306 | } | |
307 | ||
308 | /* This function probes an mwifiex device and registers it. It allocates | |
309 | * the card structure, initiates the device registration and initialization | |
310 | * procedure by adding a logical interface. | |
311 | */ | |
312 | static int mwifiex_usb_probe(struct usb_interface *intf, | |
313 | const struct usb_device_id *id) | |
314 | { | |
315 | struct usb_device *udev = interface_to_usbdev(intf); | |
316 | struct usb_host_interface *iface_desc = intf->cur_altsetting; | |
317 | struct usb_endpoint_descriptor *epd; | |
318 | int ret, i; | |
319 | struct usb_card_rec *card; | |
320 | u16 id_vendor, id_product, bcd_device, bcd_usb; | |
321 | ||
322 | card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL); | |
323 | if (!card) | |
324 | return -ENOMEM; | |
325 | ||
326 | id_vendor = le16_to_cpu(udev->descriptor.idVendor); | |
327 | id_product = le16_to_cpu(udev->descriptor.idProduct); | |
328 | bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); | |
329 | bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB); | |
330 | pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n", | |
331 | id_vendor, id_product, bcd_device); | |
332 | ||
333 | /* PID_1 is used for firmware downloading only */ | |
334 | if (id_product == USB8797_PID_1) | |
335 | card->usb_boot_state = USB8797_FW_DNLD; | |
336 | else | |
337 | card->usb_boot_state = USB8797_FW_READY; | |
338 | ||
339 | card->udev = udev; | |
340 | card->intf = intf; | |
341 | ||
342 | pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocl=%#x\n", | |
343 | udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass, | |
344 | udev->descriptor.bDeviceSubClass, | |
345 | udev->descriptor.bDeviceProtocol); | |
346 | ||
347 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
348 | epd = &iface_desc->endpoint[i].desc; | |
349 | if (usb_endpoint_dir_in(epd) && | |
350 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && | |
351 | usb_endpoint_xfer_bulk(epd)) { | |
352 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", | |
353 | le16_to_cpu(epd->wMaxPacketSize), | |
354 | epd->bEndpointAddress); | |
355 | card->rx_cmd_ep = usb_endpoint_num(epd); | |
356 | atomic_set(&card->rx_cmd_urb_pending, 0); | |
357 | } | |
358 | if (usb_endpoint_dir_in(epd) && | |
359 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && | |
360 | usb_endpoint_xfer_bulk(epd)) { | |
361 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", | |
362 | le16_to_cpu(epd->wMaxPacketSize), | |
363 | epd->bEndpointAddress); | |
364 | card->rx_data_ep = usb_endpoint_num(epd); | |
365 | atomic_set(&card->rx_data_urb_pending, 0); | |
366 | } | |
367 | if (usb_endpoint_dir_out(epd) && | |
368 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && | |
369 | usb_endpoint_xfer_bulk(epd)) { | |
370 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", | |
371 | le16_to_cpu(epd->wMaxPacketSize), | |
372 | epd->bEndpointAddress); | |
373 | card->tx_data_ep = usb_endpoint_num(epd); | |
374 | atomic_set(&card->tx_data_urb_pending, 0); | |
375 | } | |
376 | if (usb_endpoint_dir_out(epd) && | |
377 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && | |
378 | usb_endpoint_xfer_bulk(epd)) { | |
379 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", | |
380 | le16_to_cpu(epd->wMaxPacketSize), | |
381 | epd->bEndpointAddress); | |
382 | card->tx_cmd_ep = usb_endpoint_num(epd); | |
383 | atomic_set(&card->tx_cmd_urb_pending, 0); | |
384 | card->bulk_out_maxpktsize = | |
385 | le16_to_cpu(epd->wMaxPacketSize); | |
386 | } | |
387 | } | |
388 | ||
389 | usb_set_intfdata(intf, card); | |
390 | ||
391 | ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops, | |
392 | MWIFIEX_USB); | |
393 | if (ret) { | |
394 | pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); | |
395 | usb_reset_device(udev); | |
396 | kfree(card); | |
397 | return ret; | |
398 | } | |
399 | ||
400 | usb_get_dev(udev); | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
405 | /* Kernel needs to suspend all functions separately. Therefore all | |
406 | * registered functions must have drivers with suspend and resume | |
407 | * methods. Failing that the kernel simply removes the whole card. | |
408 | * | |
409 | * If already not suspended, this function allocates and sends a | |
410 | * 'host sleep activate' request to the firmware and turns off the traffic. | |
411 | */ | |
412 | static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) | |
413 | { | |
414 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
415 | struct mwifiex_adapter *adapter; | |
416 | int i; | |
417 | ||
418 | if (!card || !card->adapter) { | |
419 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
420 | return 0; | |
421 | } | |
422 | adapter = card->adapter; | |
423 | ||
424 | if (unlikely(adapter->is_suspended)) | |
425 | dev_warn(adapter->dev, "Device already suspended\n"); | |
426 | ||
427 | mwifiex_enable_hs(adapter); | |
428 | ||
429 | /* 'is_suspended' flag indicates device is suspended. | |
430 | * It must be set here before the usb_kill_urb() calls. Reason | |
431 | * is in the complete handlers, urb->status(= -ENOENT) and | |
432 | * this flag is used in combination to distinguish between a | |
433 | * 'suspended' state and a 'disconnect' one. | |
434 | */ | |
435 | adapter->is_suspended = true; | |
436 | ||
437 | for (i = 0; i < adapter->priv_num; i++) | |
438 | netif_carrier_off(adapter->priv[i]->netdev); | |
439 | ||
440 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) | |
441 | usb_kill_urb(card->rx_cmd.urb); | |
442 | ||
443 | if (atomic_read(&card->rx_data_urb_pending)) | |
444 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
445 | if (card->rx_data_list[i].urb) | |
446 | usb_kill_urb(card->rx_data_list[i].urb); | |
447 | ||
448 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) | |
449 | if (card->tx_data_list[i].urb) | |
450 | usb_kill_urb(card->tx_data_list[i].urb); | |
451 | ||
452 | if (card->tx_cmd.urb) | |
453 | usb_kill_urb(card->tx_cmd.urb); | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | /* Kernel needs to suspend all functions separately. Therefore all | |
459 | * registered functions must have drivers with suspend and resume | |
460 | * methods. Failing that the kernel simply removes the whole card. | |
461 | * | |
462 | * If already not resumed, this function turns on the traffic and | |
463 | * sends a 'host sleep cancel' request to the firmware. | |
464 | */ | |
465 | static int mwifiex_usb_resume(struct usb_interface *intf) | |
466 | { | |
467 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
468 | struct mwifiex_adapter *adapter; | |
469 | int i; | |
470 | ||
471 | if (!card || !card->adapter) { | |
472 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
473 | return 0; | |
474 | } | |
475 | adapter = card->adapter; | |
476 | ||
477 | if (unlikely(!adapter->is_suspended)) { | |
478 | dev_warn(adapter->dev, "Device already resumed\n"); | |
479 | return 0; | |
480 | } | |
481 | ||
482 | /* Indicate device resumed. The netdev queue will be resumed only | |
483 | * after the urbs have been re-submitted | |
484 | */ | |
485 | adapter->is_suspended = false; | |
486 | ||
487 | if (!atomic_read(&card->rx_data_urb_pending)) | |
488 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
489 | mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], | |
490 | MWIFIEX_RX_DATA_BUF_SIZE); | |
491 | ||
492 | if (!atomic_read(&card->rx_cmd_urb_pending)) { | |
493 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); | |
494 | if (card->rx_cmd.skb) | |
495 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, | |
496 | MWIFIEX_RX_CMD_BUF_SIZE); | |
497 | } | |
498 | ||
499 | for (i = 0; i < adapter->priv_num; i++) | |
500 | if (adapter->priv[i]->media_connected) | |
501 | netif_carrier_on(adapter->priv[i]->netdev); | |
502 | ||
503 | /* Disable Host Sleep */ | |
504 | if (adapter->hs_activated) | |
505 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, | |
506 | MWIFIEX_BSS_ROLE_ANY), | |
507 | MWIFIEX_ASYNC_CMD); | |
508 | ||
509 | #ifdef CONFIG_PM | |
510 | /* Resume handler may be called due to remote wakeup, | |
511 | * force to exit suspend anyway | |
512 | */ | |
513 | usb_disable_autosuspend(card->udev); | |
514 | #endif /* CONFIG_PM */ | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
519 | static void mwifiex_usb_disconnect(struct usb_interface *intf) | |
520 | { | |
521 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
522 | struct mwifiex_adapter *adapter; | |
523 | int i; | |
524 | ||
525 | if (!card || !card->adapter) { | |
526 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
527 | return; | |
528 | } | |
529 | ||
530 | adapter = card->adapter; | |
531 | if (!adapter->priv_num) | |
532 | return; | |
533 | ||
534 | /* In case driver is removed when asynchronous FW downloading is | |
535 | * in progress | |
536 | */ | |
537 | wait_for_completion(&adapter->fw_load); | |
538 | ||
539 | if (user_rmmod) { | |
540 | #ifdef CONFIG_PM | |
541 | if (adapter->is_suspended) | |
542 | mwifiex_usb_resume(intf); | |
543 | #endif | |
544 | for (i = 0; i < adapter->priv_num; i++) | |
545 | if ((GET_BSS_ROLE(adapter->priv[i]) == | |
546 | MWIFIEX_BSS_ROLE_STA) && | |
547 | adapter->priv[i]->media_connected) | |
548 | mwifiex_deauthenticate(adapter->priv[i], NULL); | |
549 | ||
550 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, | |
551 | MWIFIEX_BSS_ROLE_ANY), | |
552 | MWIFIEX_FUNC_SHUTDOWN); | |
553 | } | |
554 | ||
555 | mwifiex_usb_free(card); | |
556 | ||
557 | dev_dbg(adapter->dev, "%s: removing card\n", __func__); | |
558 | mwifiex_remove_card(adapter, &add_remove_card_sem); | |
559 | ||
560 | usb_set_intfdata(intf, NULL); | |
561 | usb_put_dev(interface_to_usbdev(intf)); | |
562 | kfree(card); | |
563 | ||
564 | return; | |
565 | } | |
566 | ||
567 | static struct usb_driver mwifiex_usb_driver = { | |
568 | .name = usbdriver_name, | |
569 | .probe = mwifiex_usb_probe, | |
570 | .disconnect = mwifiex_usb_disconnect, | |
571 | .id_table = mwifiex_usb_table, | |
572 | .suspend = mwifiex_usb_suspend, | |
573 | .resume = mwifiex_usb_resume, | |
574 | .supports_autosuspend = 1, | |
575 | }; | |
576 | ||
577 | static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) | |
578 | { | |
579 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
580 | int i; | |
581 | ||
582 | card->tx_cmd.adapter = adapter; | |
583 | card->tx_cmd.ep = card->tx_cmd_ep; | |
584 | ||
585 | card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); | |
586 | if (!card->tx_cmd.urb) { | |
587 | dev_err(adapter->dev, "tx_cmd.urb allocation failed\n"); | |
588 | return -ENOMEM; | |
589 | } | |
590 | ||
591 | card->tx_data_ix = 0; | |
592 | ||
593 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { | |
594 | card->tx_data_list[i].adapter = adapter; | |
595 | card->tx_data_list[i].ep = card->tx_data_ep; | |
596 | ||
597 | card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); | |
598 | if (!card->tx_data_list[i].urb) { | |
599 | dev_err(adapter->dev, | |
600 | "tx_data_list[] urb allocation failed\n"); | |
601 | return -ENOMEM; | |
602 | } | |
603 | } | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
608 | static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) | |
609 | { | |
610 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
611 | int i; | |
612 | ||
613 | card->rx_cmd.adapter = adapter; | |
614 | card->rx_cmd.ep = card->rx_cmd_ep; | |
615 | ||
616 | card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); | |
617 | if (!card->rx_cmd.urb) { | |
618 | dev_err(adapter->dev, "rx_cmd.urb allocation failed\n"); | |
619 | return -ENOMEM; | |
620 | } | |
621 | ||
622 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); | |
623 | if (!card->rx_cmd.skb) { | |
624 | dev_err(adapter->dev, "rx_cmd.skb allocation failed\n"); | |
625 | return -ENOMEM; | |
626 | } | |
627 | ||
628 | if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) | |
629 | return -1; | |
630 | ||
631 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { | |
632 | card->rx_data_list[i].adapter = adapter; | |
633 | card->rx_data_list[i].ep = card->rx_data_ep; | |
634 | ||
635 | card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); | |
636 | if (!card->rx_data_list[i].urb) { | |
637 | dev_err(adapter->dev, | |
638 | "rx_data_list[] urb allocation failed\n"); | |
639 | return -1; | |
640 | } | |
641 | if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], | |
642 | MWIFIEX_RX_DATA_BUF_SIZE)) | |
643 | return -1; | |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
649 | static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, | |
650 | u32 *len, u8 ep, u32 timeout) | |
651 | { | |
652 | struct usb_card_rec *card = adapter->card; | |
653 | int actual_length, ret; | |
654 | ||
655 | if (!(*len % card->bulk_out_maxpktsize)) | |
656 | (*len)++; | |
657 | ||
658 | /* Send the data block */ | |
659 | ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, | |
660 | *len, &actual_length, timeout); | |
661 | if (ret) { | |
662 | dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret); | |
663 | ret = -1; | |
664 | } | |
665 | ||
666 | *len = actual_length; | |
667 | ||
668 | return ret; | |
669 | } | |
670 | ||
671 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, | |
672 | u32 *len, u8 ep, u32 timeout) | |
673 | { | |
674 | struct usb_card_rec *card = adapter->card; | |
675 | int actual_length, ret; | |
676 | ||
677 | /* Receive the data response */ | |
678 | ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, | |
679 | *len, &actual_length, timeout); | |
680 | if (ret) { | |
681 | dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret); | |
682 | ret = -1; | |
683 | } | |
684 | ||
685 | *len = actual_length; | |
686 | ||
687 | return ret; | |
688 | } | |
689 | ||
690 | /* This function write a command/data packet to card. */ | |
691 | static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, | |
692 | struct sk_buff *skb, | |
693 | struct mwifiex_tx_param *tx_param) | |
694 | { | |
695 | struct usb_card_rec *card = adapter->card; | |
696 | struct urb_context *context; | |
697 | u8 *data = (u8 *)skb->data; | |
698 | struct urb *tx_urb; | |
699 | ||
700 | if (adapter->is_suspended) { | |
701 | dev_err(adapter->dev, | |
702 | "%s: not allowed while suspended\n", __func__); | |
703 | return -1; | |
704 | } | |
705 | ||
706 | if (adapter->surprise_removed) { | |
707 | dev_err(adapter->dev, "%s: device removed\n", __func__); | |
708 | return -1; | |
709 | } | |
710 | ||
711 | if (ep == card->tx_data_ep && | |
712 | atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) { | |
713 | return -EBUSY; | |
714 | } | |
715 | ||
716 | dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep); | |
717 | ||
718 | if (ep == card->tx_cmd_ep) { | |
719 | context = &card->tx_cmd; | |
720 | } else { | |
721 | if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB) | |
722 | card->tx_data_ix = 0; | |
723 | context = &card->tx_data_list[card->tx_data_ix++]; | |
724 | } | |
725 | ||
726 | context->adapter = adapter; | |
727 | context->ep = ep; | |
728 | context->skb = skb; | |
729 | tx_urb = context->urb; | |
730 | ||
731 | usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep), | |
732 | data, skb->len, mwifiex_usb_tx_complete, | |
733 | (void *)context); | |
734 | ||
735 | tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
736 | ||
737 | if (ep == card->tx_cmd_ep) | |
738 | atomic_inc(&card->tx_cmd_urb_pending); | |
739 | else | |
740 | atomic_inc(&card->tx_data_urb_pending); | |
741 | ||
742 | if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { | |
743 | dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__); | |
744 | if (ep == card->tx_cmd_ep) { | |
745 | atomic_dec(&card->tx_cmd_urb_pending); | |
746 | } else { | |
747 | atomic_dec(&card->tx_data_urb_pending); | |
748 | if (card->tx_data_ix) | |
749 | card->tx_data_ix--; | |
750 | else | |
751 | card->tx_data_ix = MWIFIEX_TX_DATA_URB; | |
752 | } | |
753 | ||
754 | return -1; | |
755 | } else { | |
756 | if (ep == card->tx_data_ep && | |
757 | atomic_read(&card->tx_data_urb_pending) == | |
758 | MWIFIEX_TX_DATA_URB) | |
759 | return -ENOSR; | |
760 | } | |
761 | ||
762 | return -EINPROGRESS; | |
763 | } | |
764 | ||
765 | /* This function register usb device and initialize parameter. */ | |
766 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
767 | { | |
768 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
769 | ||
770 | card->adapter = adapter; | |
771 | adapter->dev = &card->udev->dev; | |
772 | strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); | |
773 | ||
774 | return 0; | |
775 | } | |
776 | ||
777 | /* This function reads one block of firmware data. */ | |
778 | static int mwifiex_get_fw_data(struct mwifiex_adapter *adapter, | |
779 | u32 offset, u32 len, u8 *buf) | |
780 | { | |
781 | if (!buf || !len) | |
782 | return -1; | |
783 | ||
784 | if (offset + len > adapter->firmware->size) | |
785 | return -1; | |
786 | ||
787 | memcpy(buf, adapter->firmware->data + offset, len); | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
792 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
793 | struct mwifiex_fw_image *fw) | |
794 | { | |
795 | int ret = 0; | |
796 | u8 *firmware = fw->fw_buf, *recv_buff; | |
797 | u32 retries = USB8797_FW_MAX_RETRY, dlen; | |
798 | u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; | |
799 | struct fw_data *fwdata; | |
800 | struct fw_sync_header sync_fw; | |
801 | u8 check_winner = 1; | |
802 | ||
803 | if (!firmware) { | |
804 | dev_err(adapter->dev, | |
805 | "No firmware image found! Terminating download\n"); | |
806 | ret = -1; | |
807 | goto fw_exit; | |
808 | } | |
809 | ||
810 | /* Allocate memory for transmit */ | |
811 | fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); | |
812 | if (!fwdata) | |
813 | goto fw_exit; | |
814 | ||
815 | /* Allocate memory for receive */ | |
816 | recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); | |
817 | if (!recv_buff) | |
818 | goto cleanup; | |
819 | ||
820 | do { | |
821 | /* Send pseudo data to check winner status first */ | |
822 | if (check_winner) { | |
823 | memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); | |
824 | dlen = 0; | |
825 | } else { | |
826 | /* copy the header of the fw_data to get the length */ | |
827 | if (firmware) | |
828 | memcpy(&fwdata->fw_hdr, &firmware[tlen], | |
829 | sizeof(struct fw_header)); | |
830 | else | |
831 | mwifiex_get_fw_data(adapter, tlen, | |
832 | sizeof(struct fw_header), | |
833 | (u8 *)&fwdata->fw_hdr); | |
834 | ||
835 | dlen = le32_to_cpu(fwdata->fw_hdr.data_len); | |
836 | dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); | |
837 | tlen += sizeof(struct fw_header); | |
838 | ||
839 | if (firmware) | |
840 | memcpy(fwdata->data, &firmware[tlen], dlen); | |
841 | else | |
842 | mwifiex_get_fw_data(adapter, tlen, dlen, | |
843 | (u8 *)fwdata->data); | |
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 = USB8797_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 == USB8797_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 == USB8797_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 | struct sk_buff *skb) | |
973 | { | |
974 | atomic_dec(&adapter->rx_pending); | |
975 | dev_kfree_skb_any(skb); | |
976 | ||
977 | return 0; | |
978 | } | |
979 | ||
980 | /* This function wakes up the card. */ | |
981 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
982 | { | |
983 | /* Simulation of HS_AWAKE event */ | |
984 | adapter->pm_wakeup_fw_try = false; | |
985 | adapter->pm_wakeup_card_req = false; | |
986 | adapter->ps_state = PS_STATE_AWAKE; | |
987 | ||
988 | return 0; | |
989 | } | |
990 | ||
991 | static struct mwifiex_if_ops usb_ops = { | |
992 | .register_dev = mwifiex_register_dev, | |
993 | .wakeup = mwifiex_pm_wakeup_card, | |
994 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
995 | ||
996 | /* USB specific */ | |
997 | .dnld_fw = mwifiex_usb_dnld_fw, | |
998 | .cmdrsp_complete = mwifiex_usb_cmd_event_complete, | |
999 | .event_complete = mwifiex_usb_cmd_event_complete, | |
1000 | .data_complete = mwifiex_usb_data_complete, | |
1001 | .host_to_card = mwifiex_usb_host_to_card, | |
1002 | }; | |
1003 | ||
1004 | /* This function initializes the USB driver module. | |
1005 | * | |
1006 | * This initiates the semaphore and registers the device with | |
1007 | * USB bus. | |
1008 | */ | |
1009 | static int mwifiex_usb_init_module(void) | |
1010 | { | |
1011 | int ret; | |
1012 | ||
1013 | pr_debug("Marvell USB8797 Driver\n"); | |
1014 | ||
1015 | sema_init(&add_remove_card_sem, 1); | |
1016 | ||
1017 | ret = usb_register(&mwifiex_usb_driver); | |
1018 | if (ret) | |
1019 | pr_err("Driver register failed!\n"); | |
1020 | else | |
1021 | pr_debug("info: Driver registered successfully!\n"); | |
1022 | ||
1023 | return ret; | |
1024 | } | |
1025 | ||
1026 | /* This function cleans up the USB driver. | |
1027 | * | |
1028 | * The following major steps are followed in .disconnect for cleanup: | |
1029 | * - Resume the device if its suspended | |
1030 | * - Disconnect the device if connected | |
1031 | * - Shutdown the firmware | |
1032 | * - Unregister the device from USB bus. | |
1033 | */ | |
1034 | static void mwifiex_usb_cleanup_module(void) | |
1035 | { | |
1036 | if (!down_interruptible(&add_remove_card_sem)) | |
1037 | up(&add_remove_card_sem); | |
1038 | ||
1039 | /* set the flag as user is removing this module */ | |
1040 | user_rmmod = 1; | |
1041 | ||
1042 | usb_deregister(&mwifiex_usb_driver); | |
1043 | } | |
1044 | ||
1045 | module_init(mwifiex_usb_init_module); | |
1046 | module_exit(mwifiex_usb_cleanup_module); | |
1047 | ||
1048 | MODULE_AUTHOR("Marvell International Ltd."); | |
1049 | MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); | |
1050 | MODULE_VERSION(USB_VERSION); | |
1051 | MODULE_LICENSE("GPL v2"); | |
1052 | MODULE_FIRMWARE("mrvl/usb8797_uapsta.bin"); |