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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 | ||
4daffe35 AK |
27 | static struct mwifiex_if_ops usb_ops; |
28 | static struct semaphore add_remove_card_sem; | |
027d3307 | 29 | static struct usb_card_rec *usb_card; |
4daffe35 AK |
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; | |
027d3307 | 353 | usb_card = card; |
4daffe35 | 354 | |
69797838 | 355 | pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n", |
4daffe35 AK |
356 | udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass, |
357 | udev->descriptor.bDeviceSubClass, | |
358 | udev->descriptor.bDeviceProtocol); | |
359 | ||
360 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
361 | epd = &iface_desc->endpoint[i].desc; | |
362 | if (usb_endpoint_dir_in(epd) && | |
363 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && | |
364 | usb_endpoint_xfer_bulk(epd)) { | |
365 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", | |
366 | le16_to_cpu(epd->wMaxPacketSize), | |
367 | epd->bEndpointAddress); | |
368 | card->rx_cmd_ep = usb_endpoint_num(epd); | |
369 | atomic_set(&card->rx_cmd_urb_pending, 0); | |
370 | } | |
371 | if (usb_endpoint_dir_in(epd) && | |
372 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && | |
373 | usb_endpoint_xfer_bulk(epd)) { | |
374 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", | |
375 | le16_to_cpu(epd->wMaxPacketSize), | |
376 | epd->bEndpointAddress); | |
377 | card->rx_data_ep = usb_endpoint_num(epd); | |
378 | atomic_set(&card->rx_data_urb_pending, 0); | |
379 | } | |
380 | if (usb_endpoint_dir_out(epd) && | |
381 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && | |
382 | usb_endpoint_xfer_bulk(epd)) { | |
383 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", | |
384 | le16_to_cpu(epd->wMaxPacketSize), | |
385 | epd->bEndpointAddress); | |
386 | card->tx_data_ep = usb_endpoint_num(epd); | |
387 | atomic_set(&card->tx_data_urb_pending, 0); | |
388 | } | |
389 | if (usb_endpoint_dir_out(epd) && | |
390 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && | |
391 | usb_endpoint_xfer_bulk(epd)) { | |
392 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", | |
393 | le16_to_cpu(epd->wMaxPacketSize), | |
394 | epd->bEndpointAddress); | |
395 | card->tx_cmd_ep = usb_endpoint_num(epd); | |
396 | atomic_set(&card->tx_cmd_urb_pending, 0); | |
397 | card->bulk_out_maxpktsize = | |
398 | le16_to_cpu(epd->wMaxPacketSize); | |
399 | } | |
400 | } | |
401 | ||
402 | usb_set_intfdata(intf, card); | |
403 | ||
404 | ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops, | |
405 | MWIFIEX_USB); | |
406 | if (ret) { | |
407 | pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); | |
408 | usb_reset_device(udev); | |
409 | kfree(card); | |
410 | return ret; | |
411 | } | |
412 | ||
413 | usb_get_dev(udev); | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
418 | /* Kernel needs to suspend all functions separately. Therefore all | |
419 | * registered functions must have drivers with suspend and resume | |
420 | * methods. Failing that the kernel simply removes the whole card. | |
421 | * | |
422 | * If already not suspended, this function allocates and sends a | |
423 | * 'host sleep activate' request to the firmware and turns off the traffic. | |
424 | */ | |
425 | static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) | |
426 | { | |
427 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
428 | struct mwifiex_adapter *adapter; | |
429 | int i; | |
430 | ||
431 | if (!card || !card->adapter) { | |
432 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
433 | return 0; | |
434 | } | |
435 | adapter = card->adapter; | |
436 | ||
437 | if (unlikely(adapter->is_suspended)) | |
438 | dev_warn(adapter->dev, "Device already suspended\n"); | |
439 | ||
440 | mwifiex_enable_hs(adapter); | |
441 | ||
442 | /* 'is_suspended' flag indicates device is suspended. | |
443 | * It must be set here before the usb_kill_urb() calls. Reason | |
444 | * is in the complete handlers, urb->status(= -ENOENT) and | |
445 | * this flag is used in combination to distinguish between a | |
446 | * 'suspended' state and a 'disconnect' one. | |
447 | */ | |
448 | adapter->is_suspended = true; | |
449 | ||
4daffe35 AK |
450 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) |
451 | usb_kill_urb(card->rx_cmd.urb); | |
452 | ||
453 | if (atomic_read(&card->rx_data_urb_pending)) | |
454 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
455 | if (card->rx_data_list[i].urb) | |
456 | usb_kill_urb(card->rx_data_list[i].urb); | |
457 | ||
458 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) | |
459 | if (card->tx_data_list[i].urb) | |
460 | usb_kill_urb(card->tx_data_list[i].urb); | |
461 | ||
462 | if (card->tx_cmd.urb) | |
463 | usb_kill_urb(card->tx_cmd.urb); | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | /* Kernel needs to suspend all functions separately. Therefore all | |
469 | * registered functions must have drivers with suspend and resume | |
470 | * methods. Failing that the kernel simply removes the whole card. | |
471 | * | |
472 | * If already not resumed, this function turns on the traffic and | |
473 | * sends a 'host sleep cancel' request to the firmware. | |
474 | */ | |
475 | static int mwifiex_usb_resume(struct usb_interface *intf) | |
476 | { | |
477 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
478 | struct mwifiex_adapter *adapter; | |
479 | int i; | |
480 | ||
481 | if (!card || !card->adapter) { | |
482 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
483 | return 0; | |
484 | } | |
485 | adapter = card->adapter; | |
486 | ||
487 | if (unlikely(!adapter->is_suspended)) { | |
488 | dev_warn(adapter->dev, "Device already resumed\n"); | |
489 | return 0; | |
490 | } | |
491 | ||
492 | /* Indicate device resumed. The netdev queue will be resumed only | |
493 | * after the urbs have been re-submitted | |
494 | */ | |
495 | adapter->is_suspended = false; | |
496 | ||
497 | if (!atomic_read(&card->rx_data_urb_pending)) | |
498 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
499 | mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], | |
500 | MWIFIEX_RX_DATA_BUF_SIZE); | |
501 | ||
502 | if (!atomic_read(&card->rx_cmd_urb_pending)) { | |
503 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); | |
504 | if (card->rx_cmd.skb) | |
505 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, | |
506 | MWIFIEX_RX_CMD_BUF_SIZE); | |
507 | } | |
508 | ||
4daffe35 AK |
509 | /* Disable Host Sleep */ |
510 | if (adapter->hs_activated) | |
511 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, | |
512 | MWIFIEX_BSS_ROLE_ANY), | |
513 | MWIFIEX_ASYNC_CMD); | |
514 | ||
515 | #ifdef CONFIG_PM | |
516 | /* Resume handler may be called due to remote wakeup, | |
517 | * force to exit suspend anyway | |
518 | */ | |
519 | usb_disable_autosuspend(card->udev); | |
520 | #endif /* CONFIG_PM */ | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | static void mwifiex_usb_disconnect(struct usb_interface *intf) | |
526 | { | |
527 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
528 | struct mwifiex_adapter *adapter; | |
4daffe35 AK |
529 | |
530 | if (!card || !card->adapter) { | |
531 | pr_err("%s: card or card->adapter is NULL\n", __func__); | |
532 | return; | |
533 | } | |
534 | ||
535 | adapter = card->adapter; | |
536 | if (!adapter->priv_num) | |
537 | return; | |
538 | ||
4daffe35 AK |
539 | mwifiex_usb_free(card); |
540 | ||
541 | dev_dbg(adapter->dev, "%s: removing card\n", __func__); | |
542 | mwifiex_remove_card(adapter, &add_remove_card_sem); | |
543 | ||
544 | usb_set_intfdata(intf, NULL); | |
545 | usb_put_dev(interface_to_usbdev(intf)); | |
546 | kfree(card); | |
547 | ||
548 | return; | |
549 | } | |
550 | ||
551 | static struct usb_driver mwifiex_usb_driver = { | |
552 | .name = usbdriver_name, | |
553 | .probe = mwifiex_usb_probe, | |
554 | .disconnect = mwifiex_usb_disconnect, | |
555 | .id_table = mwifiex_usb_table, | |
556 | .suspend = mwifiex_usb_suspend, | |
557 | .resume = mwifiex_usb_resume, | |
558 | .supports_autosuspend = 1, | |
559 | }; | |
560 | ||
561 | static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) | |
562 | { | |
563 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
564 | int i; | |
565 | ||
566 | card->tx_cmd.adapter = adapter; | |
567 | card->tx_cmd.ep = card->tx_cmd_ep; | |
568 | ||
569 | card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); | |
570 | if (!card->tx_cmd.urb) { | |
571 | dev_err(adapter->dev, "tx_cmd.urb allocation failed\n"); | |
572 | return -ENOMEM; | |
573 | } | |
574 | ||
575 | card->tx_data_ix = 0; | |
576 | ||
577 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { | |
578 | card->tx_data_list[i].adapter = adapter; | |
579 | card->tx_data_list[i].ep = card->tx_data_ep; | |
580 | ||
581 | card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); | |
582 | if (!card->tx_data_list[i].urb) { | |
583 | dev_err(adapter->dev, | |
584 | "tx_data_list[] urb allocation failed\n"); | |
585 | return -ENOMEM; | |
586 | } | |
587 | } | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) | |
593 | { | |
594 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
595 | int i; | |
596 | ||
597 | card->rx_cmd.adapter = adapter; | |
598 | card->rx_cmd.ep = card->rx_cmd_ep; | |
599 | ||
600 | card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); | |
601 | if (!card->rx_cmd.urb) { | |
602 | dev_err(adapter->dev, "rx_cmd.urb allocation failed\n"); | |
603 | return -ENOMEM; | |
604 | } | |
605 | ||
606 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); | |
607 | if (!card->rx_cmd.skb) { | |
608 | dev_err(adapter->dev, "rx_cmd.skb allocation failed\n"); | |
609 | return -ENOMEM; | |
610 | } | |
611 | ||
612 | if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) | |
613 | return -1; | |
614 | ||
615 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { | |
616 | card->rx_data_list[i].adapter = adapter; | |
617 | card->rx_data_list[i].ep = card->rx_data_ep; | |
618 | ||
619 | card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); | |
620 | if (!card->rx_data_list[i].urb) { | |
621 | dev_err(adapter->dev, | |
622 | "rx_data_list[] urb allocation failed\n"); | |
623 | return -1; | |
624 | } | |
625 | if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], | |
626 | MWIFIEX_RX_DATA_BUF_SIZE)) | |
627 | return -1; | |
628 | } | |
629 | ||
630 | return 0; | |
631 | } | |
632 | ||
633 | static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, | |
634 | u32 *len, u8 ep, u32 timeout) | |
635 | { | |
636 | struct usb_card_rec *card = adapter->card; | |
637 | int actual_length, ret; | |
638 | ||
639 | if (!(*len % card->bulk_out_maxpktsize)) | |
640 | (*len)++; | |
641 | ||
642 | /* Send the data block */ | |
643 | ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, | |
644 | *len, &actual_length, timeout); | |
645 | if (ret) { | |
646 | dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret); | |
5b2e2ecc | 647 | return ret; |
4daffe35 AK |
648 | } |
649 | ||
650 | *len = actual_length; | |
651 | ||
652 | return ret; | |
653 | } | |
654 | ||
655 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, | |
656 | u32 *len, u8 ep, u32 timeout) | |
657 | { | |
658 | struct usb_card_rec *card = adapter->card; | |
659 | int actual_length, ret; | |
660 | ||
661 | /* Receive the data response */ | |
662 | ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, | |
663 | *len, &actual_length, timeout); | |
664 | if (ret) { | |
665 | dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret); | |
5b2e2ecc | 666 | return ret; |
4daffe35 AK |
667 | } |
668 | ||
669 | *len = actual_length; | |
670 | ||
671 | return ret; | |
672 | } | |
673 | ||
674 | /* This function write a command/data packet to card. */ | |
675 | static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, | |
676 | struct sk_buff *skb, | |
677 | struct mwifiex_tx_param *tx_param) | |
678 | { | |
679 | struct usb_card_rec *card = adapter->card; | |
680 | struct urb_context *context; | |
681 | u8 *data = (u8 *)skb->data; | |
682 | struct urb *tx_urb; | |
683 | ||
684 | if (adapter->is_suspended) { | |
685 | dev_err(adapter->dev, | |
686 | "%s: not allowed while suspended\n", __func__); | |
687 | return -1; | |
688 | } | |
689 | ||
690 | if (adapter->surprise_removed) { | |
691 | dev_err(adapter->dev, "%s: device removed\n", __func__); | |
692 | return -1; | |
693 | } | |
694 | ||
695 | if (ep == card->tx_data_ep && | |
696 | atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) { | |
697 | return -EBUSY; | |
698 | } | |
699 | ||
700 | dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep); | |
701 | ||
702 | if (ep == card->tx_cmd_ep) { | |
703 | context = &card->tx_cmd; | |
704 | } else { | |
705 | if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB) | |
706 | card->tx_data_ix = 0; | |
707 | context = &card->tx_data_list[card->tx_data_ix++]; | |
708 | } | |
709 | ||
710 | context->adapter = adapter; | |
711 | context->ep = ep; | |
712 | context->skb = skb; | |
713 | tx_urb = context->urb; | |
714 | ||
715 | usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep), | |
716 | data, skb->len, mwifiex_usb_tx_complete, | |
717 | (void *)context); | |
718 | ||
719 | tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
720 | ||
721 | if (ep == card->tx_cmd_ep) | |
722 | atomic_inc(&card->tx_cmd_urb_pending); | |
723 | else | |
724 | atomic_inc(&card->tx_data_urb_pending); | |
725 | ||
726 | if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { | |
727 | dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__); | |
728 | if (ep == card->tx_cmd_ep) { | |
729 | atomic_dec(&card->tx_cmd_urb_pending); | |
730 | } else { | |
731 | atomic_dec(&card->tx_data_urb_pending); | |
732 | if (card->tx_data_ix) | |
733 | card->tx_data_ix--; | |
734 | else | |
735 | card->tx_data_ix = MWIFIEX_TX_DATA_URB; | |
736 | } | |
737 | ||
738 | return -1; | |
739 | } else { | |
740 | if (ep == card->tx_data_ep && | |
741 | atomic_read(&card->tx_data_urb_pending) == | |
742 | MWIFIEX_TX_DATA_URB) | |
743 | return -ENOSR; | |
744 | } | |
745 | ||
746 | return -EINPROGRESS; | |
747 | } | |
748 | ||
749 | /* This function register usb device and initialize parameter. */ | |
750 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
751 | { | |
752 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
753 | ||
754 | card->adapter = adapter; | |
755 | adapter->dev = &card->udev->dev; | |
756 | strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); | |
757 | ||
758 | return 0; | |
759 | } | |
760 | ||
2739a95d AK |
761 | static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) |
762 | { | |
763 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
764 | ||
765 | usb_set_intfdata(card->intf, NULL); | |
766 | } | |
767 | ||
4daffe35 AK |
768 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, |
769 | struct mwifiex_fw_image *fw) | |
770 | { | |
771 | int ret = 0; | |
772 | u8 *firmware = fw->fw_buf, *recv_buff; | |
773 | u32 retries = USB8797_FW_MAX_RETRY, dlen; | |
774 | u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; | |
775 | struct fw_data *fwdata; | |
776 | struct fw_sync_header sync_fw; | |
777 | u8 check_winner = 1; | |
778 | ||
779 | if (!firmware) { | |
780 | dev_err(adapter->dev, | |
781 | "No firmware image found! Terminating download\n"); | |
782 | ret = -1; | |
783 | goto fw_exit; | |
784 | } | |
785 | ||
786 | /* Allocate memory for transmit */ | |
787 | fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); | |
788 | if (!fwdata) | |
789 | goto fw_exit; | |
790 | ||
791 | /* Allocate memory for receive */ | |
792 | recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); | |
793 | if (!recv_buff) | |
794 | goto cleanup; | |
795 | ||
796 | do { | |
797 | /* Send pseudo data to check winner status first */ | |
798 | if (check_winner) { | |
799 | memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); | |
800 | dlen = 0; | |
801 | } else { | |
802 | /* copy the header of the fw_data to get the length */ | |
fc40ca92 SL |
803 | memcpy(&fwdata->fw_hdr, &firmware[tlen], |
804 | sizeof(struct fw_header)); | |
4daffe35 AK |
805 | |
806 | dlen = le32_to_cpu(fwdata->fw_hdr.data_len); | |
807 | dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); | |
808 | tlen += sizeof(struct fw_header); | |
809 | ||
fc40ca92 | 810 | memcpy(fwdata->data, &firmware[tlen], dlen); |
4daffe35 AK |
811 | |
812 | fwdata->seq_num = cpu_to_le32(fw_seqnum); | |
813 | tlen += dlen; | |
814 | } | |
815 | ||
816 | /* If the send/receive fails or CRC occurs then retry */ | |
817 | while (retries--) { | |
818 | u8 *buf = (u8 *)fwdata; | |
819 | u32 len = FW_DATA_XMIT_SIZE; | |
820 | ||
821 | /* send the firmware block */ | |
822 | ret = mwifiex_write_data_sync(adapter, buf, &len, | |
823 | MWIFIEX_USB_EP_CMD_EVENT, | |
824 | MWIFIEX_USB_TIMEOUT); | |
825 | if (ret) { | |
826 | dev_err(adapter->dev, | |
827 | "write_data_sync: failed: %d\n", ret); | |
828 | continue; | |
829 | } | |
830 | ||
831 | buf = recv_buff; | |
832 | len = FW_DNLD_RX_BUF_SIZE; | |
833 | ||
834 | /* Receive the firmware block response */ | |
835 | ret = mwifiex_read_data_sync(adapter, buf, &len, | |
836 | MWIFIEX_USB_EP_CMD_EVENT, | |
837 | MWIFIEX_USB_TIMEOUT); | |
838 | if (ret) { | |
839 | dev_err(adapter->dev, | |
840 | "read_data_sync: failed: %d\n", ret); | |
841 | continue; | |
842 | } | |
843 | ||
844 | memcpy(&sync_fw, recv_buff, | |
845 | sizeof(struct fw_sync_header)); | |
846 | ||
847 | /* check 1st firmware block resp for highest bit set */ | |
848 | if (check_winner) { | |
849 | if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { | |
850 | dev_warn(adapter->dev, | |
851 | "USB is not the winner %#x\n", | |
852 | sync_fw.cmd); | |
853 | ||
854 | /* returning success */ | |
855 | ret = 0; | |
856 | goto cleanup; | |
857 | } | |
858 | ||
859 | dev_dbg(adapter->dev, | |
860 | "USB is the winner, start to download FW\n"); | |
861 | ||
862 | check_winner = 0; | |
863 | break; | |
864 | } | |
865 | ||
866 | /* check the firmware block response for CRC errors */ | |
867 | if (sync_fw.cmd) { | |
868 | dev_err(adapter->dev, | |
869 | "FW received block with CRC %#x\n", | |
870 | sync_fw.cmd); | |
871 | ret = -1; | |
872 | continue; | |
873 | } | |
874 | ||
875 | retries = USB8797_FW_MAX_RETRY; | |
876 | break; | |
877 | } | |
878 | fw_seqnum++; | |
879 | } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); | |
880 | ||
881 | cleanup: | |
882 | dev_dbg(adapter->dev, "%s: %d bytes downloaded\n", __func__, tlen); | |
883 | ||
884 | kfree(recv_buff); | |
885 | kfree(fwdata); | |
886 | ||
887 | if (retries) | |
888 | ret = 0; | |
889 | fw_exit: | |
890 | return ret; | |
891 | } | |
892 | ||
893 | static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, | |
894 | struct mwifiex_fw_image *fw) | |
895 | { | |
896 | int ret; | |
897 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
898 | ||
899 | if (card->usb_boot_state == USB8797_FW_DNLD) { | |
900 | ret = mwifiex_prog_fw_w_helper(adapter, fw); | |
901 | if (ret) | |
902 | return -1; | |
903 | ||
904 | /* Boot state changes after successful firmware download */ | |
905 | if (card->usb_boot_state == USB8797_FW_DNLD) | |
906 | return -1; | |
907 | } | |
908 | ||
909 | ret = mwifiex_usb_rx_init(adapter); | |
910 | if (!ret) | |
911 | ret = mwifiex_usb_tx_init(adapter); | |
912 | ||
913 | return ret; | |
914 | } | |
915 | ||
916 | static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) | |
917 | { | |
918 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
919 | ||
920 | skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); | |
921 | if ((ep == card->rx_cmd_ep) && | |
922 | (!atomic_read(&card->rx_cmd_urb_pending))) | |
923 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, | |
924 | MWIFIEX_RX_CMD_BUF_SIZE); | |
925 | ||
926 | return; | |
927 | } | |
928 | ||
929 | static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, | |
930 | struct sk_buff *skb) | |
931 | { | |
932 | atomic_dec(&adapter->rx_pending); | |
933 | mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
938 | static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter, | |
939 | struct sk_buff *skb) | |
940 | { | |
941 | atomic_dec(&adapter->rx_pending); | |
942 | dev_kfree_skb_any(skb); | |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
947 | /* This function wakes up the card. */ | |
948 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
949 | { | |
950 | /* Simulation of HS_AWAKE event */ | |
951 | adapter->pm_wakeup_fw_try = false; | |
952 | adapter->pm_wakeup_card_req = false; | |
953 | adapter->ps_state = PS_STATE_AWAKE; | |
954 | ||
955 | return 0; | |
956 | } | |
957 | ||
958 | static struct mwifiex_if_ops usb_ops = { | |
959 | .register_dev = mwifiex_register_dev, | |
2739a95d | 960 | .unregister_dev = mwifiex_unregister_dev, |
4daffe35 AK |
961 | .wakeup = mwifiex_pm_wakeup_card, |
962 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
963 | ||
964 | /* USB specific */ | |
965 | .dnld_fw = mwifiex_usb_dnld_fw, | |
966 | .cmdrsp_complete = mwifiex_usb_cmd_event_complete, | |
967 | .event_complete = mwifiex_usb_cmd_event_complete, | |
968 | .data_complete = mwifiex_usb_data_complete, | |
969 | .host_to_card = mwifiex_usb_host_to_card, | |
970 | }; | |
971 | ||
972 | /* This function initializes the USB driver module. | |
973 | * | |
974 | * This initiates the semaphore and registers the device with | |
975 | * USB bus. | |
976 | */ | |
977 | static int mwifiex_usb_init_module(void) | |
978 | { | |
979 | int ret; | |
980 | ||
981 | pr_debug("Marvell USB8797 Driver\n"); | |
982 | ||
983 | sema_init(&add_remove_card_sem, 1); | |
984 | ||
985 | ret = usb_register(&mwifiex_usb_driver); | |
986 | if (ret) | |
987 | pr_err("Driver register failed!\n"); | |
988 | else | |
989 | pr_debug("info: Driver registered successfully!\n"); | |
990 | ||
991 | return ret; | |
992 | } | |
993 | ||
994 | /* This function cleans up the USB driver. | |
995 | * | |
996 | * The following major steps are followed in .disconnect for cleanup: | |
997 | * - Resume the device if its suspended | |
998 | * - Disconnect the device if connected | |
999 | * - Shutdown the firmware | |
1000 | * - Unregister the device from USB bus. | |
1001 | */ | |
1002 | static void mwifiex_usb_cleanup_module(void) | |
1003 | { | |
1004 | if (!down_interruptible(&add_remove_card_sem)) | |
1005 | up(&add_remove_card_sem); | |
1006 | ||
027d3307 AK |
1007 | if (usb_card) { |
1008 | struct mwifiex_adapter *adapter = usb_card->adapter; | |
1009 | int i; | |
1010 | ||
1011 | /* In case driver is removed when asynchronous FW downloading is | |
1012 | * in progress | |
1013 | */ | |
1014 | wait_for_completion(&adapter->fw_load); | |
1015 | ||
1016 | #ifdef CONFIG_PM | |
1017 | if (adapter->is_suspended) | |
1018 | mwifiex_usb_resume(usb_card->intf); | |
1019 | #endif | |
1020 | for (i = 0; i < adapter->priv_num; i++) | |
1021 | if ((GET_BSS_ROLE(adapter->priv[i]) == | |
1022 | MWIFIEX_BSS_ROLE_STA) && | |
1023 | adapter->priv[i]->media_connected) | |
1024 | mwifiex_deauthenticate(adapter->priv[i], NULL); | |
1025 | ||
1026 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, | |
1027 | MWIFIEX_BSS_ROLE_ANY), | |
1028 | MWIFIEX_FUNC_SHUTDOWN); | |
1029 | } | |
4daffe35 AK |
1030 | |
1031 | usb_deregister(&mwifiex_usb_driver); | |
1032 | } | |
1033 | ||
1034 | module_init(mwifiex_usb_init_module); | |
1035 | module_exit(mwifiex_usb_cleanup_module); | |
1036 | ||
1037 | MODULE_AUTHOR("Marvell International Ltd."); | |
1038 | MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); | |
1039 | MODULE_VERSION(USB_VERSION); | |
1040 | MODULE_LICENSE("GPL v2"); | |
1041 | MODULE_FIRMWARE("mrvl/usb8797_uapsta.bin"); |