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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; | |
8311f0da | 52 | int ret; |
4daffe35 AK |
53 | |
54 | if (adapter->hs_activated) | |
55 | mwifiex_process_hs_config(adapter); | |
56 | ||
57 | if (skb->len < INTF_HEADER_LEN) { | |
58 | dev_err(dev, "%s: invalid skb->len\n", __func__); | |
59 | return -1; | |
60 | } | |
61 | ||
62 | switch (ep) { | |
63 | case MWIFIEX_USB_EP_CMD_EVENT: | |
64 | dev_dbg(dev, "%s: EP_CMD_EVENT\n", __func__); | |
65 | skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN); | |
66 | recv_type = le32_to_cpu(tmp); | |
67 | skb_pull(skb, INTF_HEADER_LEN); | |
68 | ||
69 | switch (recv_type) { | |
70 | case MWIFIEX_USB_TYPE_CMD: | |
71 | if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) { | |
72 | dev_err(dev, "CMD: skb->len too large\n"); | |
8311f0da AK |
73 | ret = -1; |
74 | goto exit_restore_skb; | |
4daffe35 AK |
75 | } else if (!adapter->curr_cmd) { |
76 | dev_dbg(dev, "CMD: no curr_cmd\n"); | |
77 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) { | |
78 | mwifiex_process_sleep_confirm_resp( | |
79 | adapter, skb->data, | |
80 | skb->len); | |
8311f0da AK |
81 | ret = 0; |
82 | goto exit_restore_skb; | |
4daffe35 | 83 | } |
8311f0da AK |
84 | ret = -1; |
85 | goto exit_restore_skb; | |
4daffe35 AK |
86 | } |
87 | ||
88 | adapter->curr_cmd->resp_skb = skb; | |
89 | adapter->cmd_resp_received = true; | |
90 | break; | |
91 | case MWIFIEX_USB_TYPE_EVENT: | |
92 | if (skb->len < sizeof(u32)) { | |
93 | dev_err(dev, "EVENT: skb->len too small\n"); | |
8311f0da AK |
94 | ret = -1; |
95 | goto exit_restore_skb; | |
4daffe35 AK |
96 | } |
97 | skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); | |
98 | adapter->event_cause = le32_to_cpu(tmp); | |
4daffe35 AK |
99 | dev_dbg(dev, "event_cause %#x\n", adapter->event_cause); |
100 | ||
101 | if (skb->len > MAX_EVENT_SIZE) { | |
102 | dev_err(dev, "EVENT: event body too large\n"); | |
8311f0da AK |
103 | ret = -1; |
104 | goto exit_restore_skb; | |
4daffe35 AK |
105 | } |
106 | ||
e80c81dc AK |
107 | memcpy(adapter->event_body, skb->data + |
108 | MWIFIEX_EVENT_HEADER_LEN, skb->len); | |
109 | ||
4daffe35 AK |
110 | adapter->event_received = true; |
111 | adapter->event_skb = skb; | |
112 | break; | |
113 | default: | |
114 | dev_err(dev, "unknown recv_type %#x\n", recv_type); | |
115 | return -1; | |
116 | } | |
117 | break; | |
118 | case MWIFIEX_USB_EP_DATA: | |
119 | dev_dbg(dev, "%s: EP_DATA\n", __func__); | |
120 | if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) { | |
121 | dev_err(dev, "DATA: skb->len too large\n"); | |
122 | return -1; | |
123 | } | |
124 | skb_queue_tail(&adapter->usb_rx_data_q, skb); | |
125 | adapter->data_received = true; | |
126 | break; | |
127 | default: | |
128 | dev_err(dev, "%s: unknown endport %#x\n", __func__, ep); | |
129 | return -1; | |
130 | } | |
131 | ||
132 | return -EINPROGRESS; | |
8311f0da AK |
133 | |
134 | exit_restore_skb: | |
135 | /* The buffer will be reused for further cmds/events */ | |
136 | skb_push(skb, INTF_HEADER_LEN); | |
137 | ||
138 | return ret; | |
4daffe35 AK |
139 | } |
140 | ||
141 | static void mwifiex_usb_rx_complete(struct urb *urb) | |
142 | { | |
143 | struct urb_context *context = (struct urb_context *)urb->context; | |
144 | struct mwifiex_adapter *adapter = context->adapter; | |
145 | struct sk_buff *skb = context->skb; | |
146 | struct usb_card_rec *card; | |
147 | int recv_length = urb->actual_length; | |
148 | int size, status; | |
149 | ||
150 | if (!adapter || !adapter->card) { | |
151 | pr_err("mwifiex adapter or card structure is not valid\n"); | |
152 | return; | |
153 | } | |
154 | ||
155 | card = (struct usb_card_rec *)adapter->card; | |
156 | if (card->rx_cmd_ep == context->ep) | |
157 | atomic_dec(&card->rx_cmd_urb_pending); | |
158 | else | |
159 | atomic_dec(&card->rx_data_urb_pending); | |
160 | ||
161 | if (recv_length) { | |
162 | if (urb->status || (adapter->surprise_removed)) { | |
163 | dev_err(adapter->dev, | |
164 | "URB status is failed: %d\n", urb->status); | |
165 | /* Do not free skb in case of command ep */ | |
166 | if (card->rx_cmd_ep != context->ep) | |
167 | dev_kfree_skb_any(skb); | |
168 | goto setup_for_next; | |
169 | } | |
170 | if (skb->len > recv_length) | |
171 | skb_trim(skb, recv_length); | |
172 | else | |
173 | skb_put(skb, recv_length - skb->len); | |
174 | ||
175 | atomic_inc(&adapter->rx_pending); | |
176 | status = mwifiex_usb_recv(adapter, skb, context->ep); | |
177 | ||
178 | dev_dbg(adapter->dev, "info: recv_length=%d, status=%d\n", | |
179 | recv_length, status); | |
180 | if (status == -EINPROGRESS) { | |
181 | queue_work(adapter->workqueue, &adapter->main_work); | |
182 | ||
183 | /* urb for data_ep is re-submitted now; | |
184 | * urb for cmd_ep will be re-submitted in callback | |
185 | * mwifiex_usb_recv_complete | |
186 | */ | |
187 | if (card->rx_cmd_ep == context->ep) | |
188 | return; | |
189 | } else { | |
190 | atomic_dec(&adapter->rx_pending); | |
191 | if (status == -1) | |
192 | dev_err(adapter->dev, | |
193 | "received data processing failed!\n"); | |
194 | ||
195 | /* Do not free skb in case of command ep */ | |
196 | if (card->rx_cmd_ep != context->ep) | |
197 | dev_kfree_skb_any(skb); | |
198 | } | |
199 | } else if (urb->status) { | |
200 | if (!adapter->is_suspended) { | |
201 | dev_warn(adapter->dev, | |
202 | "Card is removed: %d\n", urb->status); | |
203 | adapter->surprise_removed = true; | |
204 | } | |
205 | dev_kfree_skb_any(skb); | |
206 | return; | |
207 | } else { | |
208 | /* Do not free skb in case of command ep */ | |
209 | if (card->rx_cmd_ep != context->ep) | |
210 | dev_kfree_skb_any(skb); | |
211 | ||
212 | /* fall through setup_for_next */ | |
213 | } | |
214 | ||
215 | setup_for_next: | |
216 | if (card->rx_cmd_ep == context->ep) | |
217 | size = MWIFIEX_RX_CMD_BUF_SIZE; | |
218 | else | |
219 | size = MWIFIEX_RX_DATA_BUF_SIZE; | |
220 | ||
221 | mwifiex_usb_submit_rx_urb(context, size); | |
222 | ||
223 | return; | |
224 | } | |
225 | ||
226 | static void mwifiex_usb_tx_complete(struct urb *urb) | |
227 | { | |
228 | struct urb_context *context = (struct urb_context *)(urb->context); | |
229 | struct mwifiex_adapter *adapter = context->adapter; | |
230 | struct usb_card_rec *card = adapter->card; | |
231 | ||
232 | dev_dbg(adapter->dev, "%s: status: %d\n", __func__, urb->status); | |
233 | ||
234 | if (context->ep == card->tx_cmd_ep) { | |
235 | dev_dbg(adapter->dev, "%s: CMD\n", __func__); | |
236 | atomic_dec(&card->tx_cmd_urb_pending); | |
237 | adapter->cmd_sent = false; | |
238 | } else { | |
239 | dev_dbg(adapter->dev, "%s: DATA\n", __func__); | |
240 | atomic_dec(&card->tx_data_urb_pending); | |
47411a06 | 241 | mwifiex_write_data_complete(adapter, context->skb, 0, |
4daffe35 AK |
242 | urb->status ? -1 : 0); |
243 | } | |
244 | ||
245 | queue_work(adapter->workqueue, &adapter->main_work); | |
246 | ||
247 | return; | |
248 | } | |
249 | ||
250 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size) | |
251 | { | |
252 | struct mwifiex_adapter *adapter = ctx->adapter; | |
253 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
254 | ||
255 | if (card->rx_cmd_ep != ctx->ep) { | |
256 | ctx->skb = dev_alloc_skb(size); | |
257 | if (!ctx->skb) { | |
258 | dev_err(adapter->dev, | |
259 | "%s: dev_alloc_skb failed\n", __func__); | |
260 | return -ENOMEM; | |
261 | } | |
262 | } | |
263 | ||
264 | usb_fill_bulk_urb(ctx->urb, card->udev, | |
265 | usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data, | |
266 | size, mwifiex_usb_rx_complete, (void *)ctx); | |
267 | ||
268 | if (card->rx_cmd_ep == ctx->ep) | |
269 | atomic_inc(&card->rx_cmd_urb_pending); | |
270 | else | |
271 | atomic_inc(&card->rx_data_urb_pending); | |
272 | ||
273 | if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) { | |
274 | dev_err(adapter->dev, "usb_submit_urb failed\n"); | |
275 | dev_kfree_skb_any(ctx->skb); | |
276 | ctx->skb = NULL; | |
277 | ||
278 | if (card->rx_cmd_ep == ctx->ep) | |
279 | atomic_dec(&card->rx_cmd_urb_pending); | |
280 | else | |
281 | atomic_dec(&card->rx_data_urb_pending); | |
282 | ||
283 | return -1; | |
284 | } | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | static void mwifiex_usb_free(struct usb_card_rec *card) | |
290 | { | |
291 | int i; | |
292 | ||
293 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) | |
294 | usb_kill_urb(card->rx_cmd.urb); | |
295 | ||
296 | usb_free_urb(card->rx_cmd.urb); | |
297 | card->rx_cmd.urb = NULL; | |
298 | ||
299 | if (atomic_read(&card->rx_data_urb_pending)) | |
300 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
301 | if (card->rx_data_list[i].urb) | |
302 | usb_kill_urb(card->rx_data_list[i].urb); | |
303 | ||
304 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { | |
305 | usb_free_urb(card->rx_data_list[i].urb); | |
306 | card->rx_data_list[i].urb = NULL; | |
307 | } | |
308 | ||
309 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { | |
310 | usb_free_urb(card->tx_data_list[i].urb); | |
311 | card->tx_data_list[i].urb = NULL; | |
312 | } | |
313 | ||
314 | usb_free_urb(card->tx_cmd.urb); | |
315 | card->tx_cmd.urb = NULL; | |
316 | ||
317 | return; | |
318 | } | |
319 | ||
320 | /* This function probes an mwifiex device and registers it. It allocates | |
321 | * the card structure, initiates the device registration and initialization | |
322 | * procedure by adding a logical interface. | |
323 | */ | |
324 | static int mwifiex_usb_probe(struct usb_interface *intf, | |
325 | const struct usb_device_id *id) | |
326 | { | |
327 | struct usb_device *udev = interface_to_usbdev(intf); | |
328 | struct usb_host_interface *iface_desc = intf->cur_altsetting; | |
329 | struct usb_endpoint_descriptor *epd; | |
330 | int ret, i; | |
331 | struct usb_card_rec *card; | |
332 | u16 id_vendor, id_product, bcd_device, bcd_usb; | |
333 | ||
334 | card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL); | |
335 | if (!card) | |
336 | return -ENOMEM; | |
337 | ||
338 | id_vendor = le16_to_cpu(udev->descriptor.idVendor); | |
339 | id_product = le16_to_cpu(udev->descriptor.idProduct); | |
340 | bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); | |
341 | bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB); | |
342 | pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n", | |
343 | id_vendor, id_product, bcd_device); | |
344 | ||
345 | /* PID_1 is used for firmware downloading only */ | |
346 | if (id_product == USB8797_PID_1) | |
347 | card->usb_boot_state = USB8797_FW_DNLD; | |
348 | else | |
349 | card->usb_boot_state = USB8797_FW_READY; | |
350 | ||
351 | card->udev = udev; | |
352 | card->intf = intf; | |
353 | ||
354 | pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocl=%#x\n", | |
355 | udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass, | |
356 | udev->descriptor.bDeviceSubClass, | |
357 | udev->descriptor.bDeviceProtocol); | |
358 | ||
359 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
360 | epd = &iface_desc->endpoint[i].desc; | |
361 | if (usb_endpoint_dir_in(epd) && | |
362 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && | |
363 | usb_endpoint_xfer_bulk(epd)) { | |
364 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", | |
365 | le16_to_cpu(epd->wMaxPacketSize), | |
366 | epd->bEndpointAddress); | |
367 | card->rx_cmd_ep = usb_endpoint_num(epd); | |
368 | atomic_set(&card->rx_cmd_urb_pending, 0); | |
369 | } | |
370 | if (usb_endpoint_dir_in(epd) && | |
371 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && | |
372 | usb_endpoint_xfer_bulk(epd)) { | |
373 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", | |
374 | le16_to_cpu(epd->wMaxPacketSize), | |
375 | epd->bEndpointAddress); | |
376 | card->rx_data_ep = usb_endpoint_num(epd); | |
377 | atomic_set(&card->rx_data_urb_pending, 0); | |
378 | } | |
379 | if (usb_endpoint_dir_out(epd) && | |
380 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && | |
381 | usb_endpoint_xfer_bulk(epd)) { | |
382 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", | |
383 | le16_to_cpu(epd->wMaxPacketSize), | |
384 | epd->bEndpointAddress); | |
385 | card->tx_data_ep = usb_endpoint_num(epd); | |
386 | atomic_set(&card->tx_data_urb_pending, 0); | |
387 | } | |
388 | if (usb_endpoint_dir_out(epd) && | |
389 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && | |
390 | usb_endpoint_xfer_bulk(epd)) { | |
391 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", | |
392 | le16_to_cpu(epd->wMaxPacketSize), | |
393 | epd->bEndpointAddress); | |
394 | card->tx_cmd_ep = usb_endpoint_num(epd); | |
395 | atomic_set(&card->tx_cmd_urb_pending, 0); | |
396 | card->bulk_out_maxpktsize = | |
397 | le16_to_cpu(epd->wMaxPacketSize); | |
398 | } | |
399 | } | |
400 | ||
401 | usb_set_intfdata(intf, card); | |
402 | ||
403 | ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops, | |
404 | MWIFIEX_USB); | |
405 | if (ret) { | |
406 | pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); | |
407 | usb_reset_device(udev); | |
408 | kfree(card); | |
409 | return ret; | |
410 | } | |
411 | ||
412 | usb_get_dev(udev); | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | /* Kernel needs to suspend all functions separately. Therefore all | |
418 | * registered functions must have drivers with suspend and resume | |
419 | * methods. Failing that the kernel simply removes the whole card. | |
420 | * | |
421 | * If already not suspended, this function allocates and sends a | |
422 | * 'host sleep activate' request to the firmware and turns off the traffic. | |
423 | */ | |
424 | static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) | |
425 | { | |
426 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
427 | struct mwifiex_adapter *adapter; | |
428 | int i; | |
429 | ||
430 | if (!card || !card->adapter) { | |
431 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
432 | return 0; | |
433 | } | |
434 | adapter = card->adapter; | |
435 | ||
436 | if (unlikely(adapter->is_suspended)) | |
437 | dev_warn(adapter->dev, "Device already suspended\n"); | |
438 | ||
439 | mwifiex_enable_hs(adapter); | |
440 | ||
441 | /* 'is_suspended' flag indicates device is suspended. | |
442 | * It must be set here before the usb_kill_urb() calls. Reason | |
443 | * is in the complete handlers, urb->status(= -ENOENT) and | |
444 | * this flag is used in combination to distinguish between a | |
445 | * 'suspended' state and a 'disconnect' one. | |
446 | */ | |
447 | adapter->is_suspended = true; | |
448 | ||
449 | for (i = 0; i < adapter->priv_num; i++) | |
450 | netif_carrier_off(adapter->priv[i]->netdev); | |
451 | ||
452 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) | |
453 | usb_kill_urb(card->rx_cmd.urb); | |
454 | ||
455 | if (atomic_read(&card->rx_data_urb_pending)) | |
456 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
457 | if (card->rx_data_list[i].urb) | |
458 | usb_kill_urb(card->rx_data_list[i].urb); | |
459 | ||
460 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) | |
461 | if (card->tx_data_list[i].urb) | |
462 | usb_kill_urb(card->tx_data_list[i].urb); | |
463 | ||
464 | if (card->tx_cmd.urb) | |
465 | usb_kill_urb(card->tx_cmd.urb); | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | /* Kernel needs to suspend all functions separately. Therefore all | |
471 | * registered functions must have drivers with suspend and resume | |
472 | * methods. Failing that the kernel simply removes the whole card. | |
473 | * | |
474 | * If already not resumed, this function turns on the traffic and | |
475 | * sends a 'host sleep cancel' request to the firmware. | |
476 | */ | |
477 | static int mwifiex_usb_resume(struct usb_interface *intf) | |
478 | { | |
479 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
480 | struct mwifiex_adapter *adapter; | |
481 | int i; | |
482 | ||
483 | if (!card || !card->adapter) { | |
484 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
485 | return 0; | |
486 | } | |
487 | adapter = card->adapter; | |
488 | ||
489 | if (unlikely(!adapter->is_suspended)) { | |
490 | dev_warn(adapter->dev, "Device already resumed\n"); | |
491 | return 0; | |
492 | } | |
493 | ||
494 | /* Indicate device resumed. The netdev queue will be resumed only | |
495 | * after the urbs have been re-submitted | |
496 | */ | |
497 | adapter->is_suspended = false; | |
498 | ||
499 | if (!atomic_read(&card->rx_data_urb_pending)) | |
500 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
501 | mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], | |
502 | MWIFIEX_RX_DATA_BUF_SIZE); | |
503 | ||
504 | if (!atomic_read(&card->rx_cmd_urb_pending)) { | |
505 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); | |
506 | if (card->rx_cmd.skb) | |
507 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, | |
508 | MWIFIEX_RX_CMD_BUF_SIZE); | |
509 | } | |
510 | ||
511 | for (i = 0; i < adapter->priv_num; i++) | |
512 | if (adapter->priv[i]->media_connected) | |
513 | netif_carrier_on(adapter->priv[i]->netdev); | |
514 | ||
515 | /* Disable Host Sleep */ | |
516 | if (adapter->hs_activated) | |
517 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, | |
518 | MWIFIEX_BSS_ROLE_ANY), | |
519 | MWIFIEX_ASYNC_CMD); | |
520 | ||
521 | #ifdef CONFIG_PM | |
522 | /* Resume handler may be called due to remote wakeup, | |
523 | * force to exit suspend anyway | |
524 | */ | |
525 | usb_disable_autosuspend(card->udev); | |
526 | #endif /* CONFIG_PM */ | |
527 | ||
528 | return 0; | |
529 | } | |
530 | ||
531 | static void mwifiex_usb_disconnect(struct usb_interface *intf) | |
532 | { | |
533 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
534 | struct mwifiex_adapter *adapter; | |
535 | int i; | |
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 | /* In case driver is removed when asynchronous FW downloading is | |
547 | * in progress | |
548 | */ | |
549 | wait_for_completion(&adapter->fw_load); | |
550 | ||
551 | if (user_rmmod) { | |
552 | #ifdef CONFIG_PM | |
553 | if (adapter->is_suspended) | |
554 | mwifiex_usb_resume(intf); | |
555 | #endif | |
556 | for (i = 0; i < adapter->priv_num; i++) | |
557 | if ((GET_BSS_ROLE(adapter->priv[i]) == | |
558 | MWIFIEX_BSS_ROLE_STA) && | |
559 | adapter->priv[i]->media_connected) | |
560 | mwifiex_deauthenticate(adapter->priv[i], NULL); | |
561 | ||
562 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, | |
563 | MWIFIEX_BSS_ROLE_ANY), | |
564 | MWIFIEX_FUNC_SHUTDOWN); | |
565 | } | |
566 | ||
567 | mwifiex_usb_free(card); | |
568 | ||
569 | dev_dbg(adapter->dev, "%s: removing card\n", __func__); | |
570 | mwifiex_remove_card(adapter, &add_remove_card_sem); | |
571 | ||
572 | usb_set_intfdata(intf, NULL); | |
573 | usb_put_dev(interface_to_usbdev(intf)); | |
574 | kfree(card); | |
575 | ||
576 | return; | |
577 | } | |
578 | ||
579 | static struct usb_driver mwifiex_usb_driver = { | |
580 | .name = usbdriver_name, | |
581 | .probe = mwifiex_usb_probe, | |
582 | .disconnect = mwifiex_usb_disconnect, | |
583 | .id_table = mwifiex_usb_table, | |
584 | .suspend = mwifiex_usb_suspend, | |
585 | .resume = mwifiex_usb_resume, | |
586 | .supports_autosuspend = 1, | |
587 | }; | |
588 | ||
589 | static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) | |
590 | { | |
591 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
592 | int i; | |
593 | ||
594 | card->tx_cmd.adapter = adapter; | |
595 | card->tx_cmd.ep = card->tx_cmd_ep; | |
596 | ||
597 | card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); | |
598 | if (!card->tx_cmd.urb) { | |
599 | dev_err(adapter->dev, "tx_cmd.urb allocation failed\n"); | |
600 | return -ENOMEM; | |
601 | } | |
602 | ||
603 | card->tx_data_ix = 0; | |
604 | ||
605 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { | |
606 | card->tx_data_list[i].adapter = adapter; | |
607 | card->tx_data_list[i].ep = card->tx_data_ep; | |
608 | ||
609 | card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); | |
610 | if (!card->tx_data_list[i].urb) { | |
611 | dev_err(adapter->dev, | |
612 | "tx_data_list[] urb allocation failed\n"); | |
613 | return -ENOMEM; | |
614 | } | |
615 | } | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
620 | static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) | |
621 | { | |
622 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
623 | int i; | |
624 | ||
625 | card->rx_cmd.adapter = adapter; | |
626 | card->rx_cmd.ep = card->rx_cmd_ep; | |
627 | ||
628 | card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); | |
629 | if (!card->rx_cmd.urb) { | |
630 | dev_err(adapter->dev, "rx_cmd.urb allocation failed\n"); | |
631 | return -ENOMEM; | |
632 | } | |
633 | ||
634 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); | |
635 | if (!card->rx_cmd.skb) { | |
636 | dev_err(adapter->dev, "rx_cmd.skb allocation failed\n"); | |
637 | return -ENOMEM; | |
638 | } | |
639 | ||
640 | if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) | |
641 | return -1; | |
642 | ||
643 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { | |
644 | card->rx_data_list[i].adapter = adapter; | |
645 | card->rx_data_list[i].ep = card->rx_data_ep; | |
646 | ||
647 | card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); | |
648 | if (!card->rx_data_list[i].urb) { | |
649 | dev_err(adapter->dev, | |
650 | "rx_data_list[] urb allocation failed\n"); | |
651 | return -1; | |
652 | } | |
653 | if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], | |
654 | MWIFIEX_RX_DATA_BUF_SIZE)) | |
655 | return -1; | |
656 | } | |
657 | ||
658 | return 0; | |
659 | } | |
660 | ||
661 | static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, | |
662 | u32 *len, u8 ep, u32 timeout) | |
663 | { | |
664 | struct usb_card_rec *card = adapter->card; | |
665 | int actual_length, ret; | |
666 | ||
667 | if (!(*len % card->bulk_out_maxpktsize)) | |
668 | (*len)++; | |
669 | ||
670 | /* Send the data block */ | |
671 | ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, | |
672 | *len, &actual_length, timeout); | |
673 | if (ret) { | |
674 | dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret); | |
675 | ret = -1; | |
676 | } | |
677 | ||
678 | *len = actual_length; | |
679 | ||
680 | return ret; | |
681 | } | |
682 | ||
683 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, | |
684 | u32 *len, u8 ep, u32 timeout) | |
685 | { | |
686 | struct usb_card_rec *card = adapter->card; | |
687 | int actual_length, ret; | |
688 | ||
689 | /* Receive the data response */ | |
690 | ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, | |
691 | *len, &actual_length, timeout); | |
692 | if (ret) { | |
693 | dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret); | |
694 | ret = -1; | |
695 | } | |
696 | ||
697 | *len = actual_length; | |
698 | ||
699 | return ret; | |
700 | } | |
701 | ||
702 | /* This function write a command/data packet to card. */ | |
703 | static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, | |
704 | struct sk_buff *skb, | |
705 | struct mwifiex_tx_param *tx_param) | |
706 | { | |
707 | struct usb_card_rec *card = adapter->card; | |
708 | struct urb_context *context; | |
709 | u8 *data = (u8 *)skb->data; | |
710 | struct urb *tx_urb; | |
711 | ||
712 | if (adapter->is_suspended) { | |
713 | dev_err(adapter->dev, | |
714 | "%s: not allowed while suspended\n", __func__); | |
715 | return -1; | |
716 | } | |
717 | ||
718 | if (adapter->surprise_removed) { | |
719 | dev_err(adapter->dev, "%s: device removed\n", __func__); | |
720 | return -1; | |
721 | } | |
722 | ||
723 | if (ep == card->tx_data_ep && | |
724 | atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) { | |
725 | return -EBUSY; | |
726 | } | |
727 | ||
728 | dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep); | |
729 | ||
730 | if (ep == card->tx_cmd_ep) { | |
731 | context = &card->tx_cmd; | |
732 | } else { | |
733 | if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB) | |
734 | card->tx_data_ix = 0; | |
735 | context = &card->tx_data_list[card->tx_data_ix++]; | |
736 | } | |
737 | ||
738 | context->adapter = adapter; | |
739 | context->ep = ep; | |
740 | context->skb = skb; | |
741 | tx_urb = context->urb; | |
742 | ||
743 | usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep), | |
744 | data, skb->len, mwifiex_usb_tx_complete, | |
745 | (void *)context); | |
746 | ||
747 | tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
748 | ||
749 | if (ep == card->tx_cmd_ep) | |
750 | atomic_inc(&card->tx_cmd_urb_pending); | |
751 | else | |
752 | atomic_inc(&card->tx_data_urb_pending); | |
753 | ||
754 | if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { | |
755 | dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__); | |
756 | if (ep == card->tx_cmd_ep) { | |
757 | atomic_dec(&card->tx_cmd_urb_pending); | |
758 | } else { | |
759 | atomic_dec(&card->tx_data_urb_pending); | |
760 | if (card->tx_data_ix) | |
761 | card->tx_data_ix--; | |
762 | else | |
763 | card->tx_data_ix = MWIFIEX_TX_DATA_URB; | |
764 | } | |
765 | ||
766 | return -1; | |
767 | } else { | |
768 | if (ep == card->tx_data_ep && | |
769 | atomic_read(&card->tx_data_urb_pending) == | |
770 | MWIFIEX_TX_DATA_URB) | |
771 | return -ENOSR; | |
772 | } | |
773 | ||
774 | return -EINPROGRESS; | |
775 | } | |
776 | ||
777 | /* This function register usb device and initialize parameter. */ | |
778 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
779 | { | |
780 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
781 | ||
782 | card->adapter = adapter; | |
783 | adapter->dev = &card->udev->dev; | |
784 | strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
789 | /* This function reads one block of firmware data. */ | |
790 | static int mwifiex_get_fw_data(struct mwifiex_adapter *adapter, | |
791 | u32 offset, u32 len, u8 *buf) | |
792 | { | |
793 | if (!buf || !len) | |
794 | return -1; | |
795 | ||
796 | if (offset + len > adapter->firmware->size) | |
797 | return -1; | |
798 | ||
799 | memcpy(buf, adapter->firmware->data + offset, len); | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
805 | struct mwifiex_fw_image *fw) | |
806 | { | |
807 | int ret = 0; | |
808 | u8 *firmware = fw->fw_buf, *recv_buff; | |
809 | u32 retries = USB8797_FW_MAX_RETRY, dlen; | |
810 | u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; | |
811 | struct fw_data *fwdata; | |
812 | struct fw_sync_header sync_fw; | |
813 | u8 check_winner = 1; | |
814 | ||
815 | if (!firmware) { | |
816 | dev_err(adapter->dev, | |
817 | "No firmware image found! Terminating download\n"); | |
818 | ret = -1; | |
819 | goto fw_exit; | |
820 | } | |
821 | ||
822 | /* Allocate memory for transmit */ | |
823 | fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); | |
824 | if (!fwdata) | |
825 | goto fw_exit; | |
826 | ||
827 | /* Allocate memory for receive */ | |
828 | recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); | |
829 | if (!recv_buff) | |
830 | goto cleanup; | |
831 | ||
832 | do { | |
833 | /* Send pseudo data to check winner status first */ | |
834 | if (check_winner) { | |
835 | memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); | |
836 | dlen = 0; | |
837 | } else { | |
838 | /* copy the header of the fw_data to get the length */ | |
839 | if (firmware) | |
840 | memcpy(&fwdata->fw_hdr, &firmware[tlen], | |
841 | sizeof(struct fw_header)); | |
842 | else | |
843 | mwifiex_get_fw_data(adapter, tlen, | |
844 | sizeof(struct fw_header), | |
845 | (u8 *)&fwdata->fw_hdr); | |
846 | ||
847 | dlen = le32_to_cpu(fwdata->fw_hdr.data_len); | |
848 | dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); | |
849 | tlen += sizeof(struct fw_header); | |
850 | ||
851 | if (firmware) | |
852 | memcpy(fwdata->data, &firmware[tlen], dlen); | |
853 | else | |
854 | mwifiex_get_fw_data(adapter, tlen, dlen, | |
855 | (u8 *)fwdata->data); | |
856 | ||
857 | fwdata->seq_num = cpu_to_le32(fw_seqnum); | |
858 | tlen += dlen; | |
859 | } | |
860 | ||
861 | /* If the send/receive fails or CRC occurs then retry */ | |
862 | while (retries--) { | |
863 | u8 *buf = (u8 *)fwdata; | |
864 | u32 len = FW_DATA_XMIT_SIZE; | |
865 | ||
866 | /* send the firmware block */ | |
867 | ret = mwifiex_write_data_sync(adapter, buf, &len, | |
868 | MWIFIEX_USB_EP_CMD_EVENT, | |
869 | MWIFIEX_USB_TIMEOUT); | |
870 | if (ret) { | |
871 | dev_err(adapter->dev, | |
872 | "write_data_sync: failed: %d\n", ret); | |
873 | continue; | |
874 | } | |
875 | ||
876 | buf = recv_buff; | |
877 | len = FW_DNLD_RX_BUF_SIZE; | |
878 | ||
879 | /* Receive the firmware block response */ | |
880 | ret = mwifiex_read_data_sync(adapter, buf, &len, | |
881 | MWIFIEX_USB_EP_CMD_EVENT, | |
882 | MWIFIEX_USB_TIMEOUT); | |
883 | if (ret) { | |
884 | dev_err(adapter->dev, | |
885 | "read_data_sync: failed: %d\n", ret); | |
886 | continue; | |
887 | } | |
888 | ||
889 | memcpy(&sync_fw, recv_buff, | |
890 | sizeof(struct fw_sync_header)); | |
891 | ||
892 | /* check 1st firmware block resp for highest bit set */ | |
893 | if (check_winner) { | |
894 | if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { | |
895 | dev_warn(adapter->dev, | |
896 | "USB is not the winner %#x\n", | |
897 | sync_fw.cmd); | |
898 | ||
899 | /* returning success */ | |
900 | ret = 0; | |
901 | goto cleanup; | |
902 | } | |
903 | ||
904 | dev_dbg(adapter->dev, | |
905 | "USB is the winner, start to download FW\n"); | |
906 | ||
907 | check_winner = 0; | |
908 | break; | |
909 | } | |
910 | ||
911 | /* check the firmware block response for CRC errors */ | |
912 | if (sync_fw.cmd) { | |
913 | dev_err(adapter->dev, | |
914 | "FW received block with CRC %#x\n", | |
915 | sync_fw.cmd); | |
916 | ret = -1; | |
917 | continue; | |
918 | } | |
919 | ||
920 | retries = USB8797_FW_MAX_RETRY; | |
921 | break; | |
922 | } | |
923 | fw_seqnum++; | |
924 | } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); | |
925 | ||
926 | cleanup: | |
927 | dev_dbg(adapter->dev, "%s: %d bytes downloaded\n", __func__, tlen); | |
928 | ||
929 | kfree(recv_buff); | |
930 | kfree(fwdata); | |
931 | ||
932 | if (retries) | |
933 | ret = 0; | |
934 | fw_exit: | |
935 | return ret; | |
936 | } | |
937 | ||
938 | static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, | |
939 | struct mwifiex_fw_image *fw) | |
940 | { | |
941 | int ret; | |
942 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
943 | ||
944 | if (card->usb_boot_state == USB8797_FW_DNLD) { | |
945 | ret = mwifiex_prog_fw_w_helper(adapter, fw); | |
946 | if (ret) | |
947 | return -1; | |
948 | ||
949 | /* Boot state changes after successful firmware download */ | |
950 | if (card->usb_boot_state == USB8797_FW_DNLD) | |
951 | return -1; | |
952 | } | |
953 | ||
954 | ret = mwifiex_usb_rx_init(adapter); | |
955 | if (!ret) | |
956 | ret = mwifiex_usb_tx_init(adapter); | |
957 | ||
958 | return ret; | |
959 | } | |
960 | ||
961 | static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) | |
962 | { | |
963 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
964 | ||
965 | skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); | |
966 | if ((ep == card->rx_cmd_ep) && | |
967 | (!atomic_read(&card->rx_cmd_urb_pending))) | |
968 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, | |
969 | MWIFIEX_RX_CMD_BUF_SIZE); | |
970 | ||
971 | return; | |
972 | } | |
973 | ||
974 | static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, | |
975 | struct sk_buff *skb) | |
976 | { | |
977 | atomic_dec(&adapter->rx_pending); | |
978 | mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); | |
979 | ||
980 | return 0; | |
981 | } | |
982 | ||
983 | static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter, | |
984 | struct sk_buff *skb) | |
985 | { | |
986 | atomic_dec(&adapter->rx_pending); | |
987 | dev_kfree_skb_any(skb); | |
988 | ||
989 | return 0; | |
990 | } | |
991 | ||
992 | /* This function wakes up the card. */ | |
993 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
994 | { | |
995 | /* Simulation of HS_AWAKE event */ | |
996 | adapter->pm_wakeup_fw_try = false; | |
997 | adapter->pm_wakeup_card_req = false; | |
998 | adapter->ps_state = PS_STATE_AWAKE; | |
999 | ||
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | static struct mwifiex_if_ops usb_ops = { | |
1004 | .register_dev = mwifiex_register_dev, | |
1005 | .wakeup = mwifiex_pm_wakeup_card, | |
1006 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
1007 | ||
1008 | /* USB specific */ | |
1009 | .dnld_fw = mwifiex_usb_dnld_fw, | |
1010 | .cmdrsp_complete = mwifiex_usb_cmd_event_complete, | |
1011 | .event_complete = mwifiex_usb_cmd_event_complete, | |
1012 | .data_complete = mwifiex_usb_data_complete, | |
1013 | .host_to_card = mwifiex_usb_host_to_card, | |
1014 | }; | |
1015 | ||
1016 | /* This function initializes the USB driver module. | |
1017 | * | |
1018 | * This initiates the semaphore and registers the device with | |
1019 | * USB bus. | |
1020 | */ | |
1021 | static int mwifiex_usb_init_module(void) | |
1022 | { | |
1023 | int ret; | |
1024 | ||
1025 | pr_debug("Marvell USB8797 Driver\n"); | |
1026 | ||
1027 | sema_init(&add_remove_card_sem, 1); | |
1028 | ||
1029 | ret = usb_register(&mwifiex_usb_driver); | |
1030 | if (ret) | |
1031 | pr_err("Driver register failed!\n"); | |
1032 | else | |
1033 | pr_debug("info: Driver registered successfully!\n"); | |
1034 | ||
1035 | return ret; | |
1036 | } | |
1037 | ||
1038 | /* This function cleans up the USB driver. | |
1039 | * | |
1040 | * The following major steps are followed in .disconnect for cleanup: | |
1041 | * - Resume the device if its suspended | |
1042 | * - Disconnect the device if connected | |
1043 | * - Shutdown the firmware | |
1044 | * - Unregister the device from USB bus. | |
1045 | */ | |
1046 | static void mwifiex_usb_cleanup_module(void) | |
1047 | { | |
1048 | if (!down_interruptible(&add_remove_card_sem)) | |
1049 | up(&add_remove_card_sem); | |
1050 | ||
1051 | /* set the flag as user is removing this module */ | |
1052 | user_rmmod = 1; | |
1053 | ||
1054 | usb_deregister(&mwifiex_usb_driver); | |
1055 | } | |
1056 | ||
1057 | module_init(mwifiex_usb_init_module); | |
1058 | module_exit(mwifiex_usb_cleanup_module); | |
1059 | ||
1060 | MODULE_AUTHOR("Marvell International Ltd."); | |
1061 | MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); | |
1062 | MODULE_VERSION(USB_VERSION); | |
1063 | MODULE_LICENSE("GPL v2"); | |
1064 | MODULE_FIRMWARE("mrvl/usb8797_uapsta.bin"); |