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1 | /* | |
2 | * Marvell Wireless LAN device driver: USB specific handling | |
3 | * | |
4 | * Copyright (C) 2012-2014, Marvell International Ltd. | |
5 | * | |
6 | * This software file (the "File") is distributed by Marvell International | |
7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 | |
8 | * (the "License"). You may use, redistribute and/or modify this File in | |
9 | * accordance with the terms and conditions of the License, a copy of which | |
10 | * is available by writing to the Free Software Foundation, Inc., | |
11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the | |
12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. | |
13 | * | |
14 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE | |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE | |
16 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about | |
17 | * this warranty disclaimer. | |
18 | */ | |
19 | ||
20 | #include "main.h" | |
21 | #include "usb.h" | |
22 | ||
23 | #define USB_VERSION "1.0" | |
24 | ||
25 | static struct mwifiex_if_ops usb_ops; | |
26 | ||
27 | static struct usb_device_id mwifiex_usb_table[] = { | |
28 | /* 8766 */ | |
29 | {USB_DEVICE(USB8XXX_VID, USB8766_PID_1)}, | |
30 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8766_PID_2, | |
31 | USB_CLASS_VENDOR_SPEC, | |
32 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, | |
33 | /* 8797 */ | |
34 | {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)}, | |
35 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2, | |
36 | USB_CLASS_VENDOR_SPEC, | |
37 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, | |
38 | /* 8801 */ | |
39 | {USB_DEVICE(USB8XXX_VID, USB8801_PID_1)}, | |
40 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8801_PID_2, | |
41 | USB_CLASS_VENDOR_SPEC, | |
42 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, | |
43 | /* 8997 */ | |
44 | {USB_DEVICE(USB8XXX_VID, USB8997_PID_1)}, | |
45 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8997_PID_2, | |
46 | USB_CLASS_VENDOR_SPEC, | |
47 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, | |
48 | { } /* Terminating entry */ | |
49 | }; | |
50 | ||
51 | MODULE_DEVICE_TABLE(usb, mwifiex_usb_table); | |
52 | ||
53 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size); | |
54 | ||
55 | /* This function handles received packet. Necessary action is taken based on | |
56 | * cmd/event/data. | |
57 | */ | |
58 | static int mwifiex_usb_recv(struct mwifiex_adapter *adapter, | |
59 | struct sk_buff *skb, u8 ep) | |
60 | { | |
61 | u32 recv_type; | |
62 | __le32 tmp; | |
63 | int ret; | |
64 | ||
65 | if (adapter->hs_activated) | |
66 | mwifiex_process_hs_config(adapter); | |
67 | ||
68 | if (skb->len < INTF_HEADER_LEN) { | |
69 | mwifiex_dbg(adapter, ERROR, | |
70 | "%s: invalid skb->len\n", __func__); | |
71 | return -1; | |
72 | } | |
73 | ||
74 | switch (ep) { | |
75 | case MWIFIEX_USB_EP_CMD_EVENT: | |
76 | mwifiex_dbg(adapter, EVENT, | |
77 | "%s: EP_CMD_EVENT\n", __func__); | |
78 | skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN); | |
79 | recv_type = le32_to_cpu(tmp); | |
80 | skb_pull(skb, INTF_HEADER_LEN); | |
81 | ||
82 | switch (recv_type) { | |
83 | case MWIFIEX_USB_TYPE_CMD: | |
84 | if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) { | |
85 | mwifiex_dbg(adapter, ERROR, | |
86 | "CMD: skb->len too large\n"); | |
87 | ret = -1; | |
88 | goto exit_restore_skb; | |
89 | } else if (!adapter->curr_cmd) { | |
90 | mwifiex_dbg(adapter, WARN, "CMD: no curr_cmd\n"); | |
91 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) { | |
92 | mwifiex_process_sleep_confirm_resp( | |
93 | adapter, skb->data, | |
94 | skb->len); | |
95 | ret = 0; | |
96 | goto exit_restore_skb; | |
97 | } | |
98 | ret = -1; | |
99 | goto exit_restore_skb; | |
100 | } | |
101 | ||
102 | adapter->curr_cmd->resp_skb = skb; | |
103 | adapter->cmd_resp_received = true; | |
104 | break; | |
105 | case MWIFIEX_USB_TYPE_EVENT: | |
106 | if (skb->len < sizeof(u32)) { | |
107 | mwifiex_dbg(adapter, ERROR, | |
108 | "EVENT: skb->len too small\n"); | |
109 | ret = -1; | |
110 | goto exit_restore_skb; | |
111 | } | |
112 | skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); | |
113 | adapter->event_cause = le32_to_cpu(tmp); | |
114 | mwifiex_dbg(adapter, EVENT, | |
115 | "event_cause %#x\n", adapter->event_cause); | |
116 | ||
117 | if (skb->len > MAX_EVENT_SIZE) { | |
118 | mwifiex_dbg(adapter, ERROR, | |
119 | "EVENT: event body too large\n"); | |
120 | ret = -1; | |
121 | goto exit_restore_skb; | |
122 | } | |
123 | ||
124 | memcpy(adapter->event_body, skb->data + | |
125 | MWIFIEX_EVENT_HEADER_LEN, skb->len); | |
126 | ||
127 | adapter->event_received = true; | |
128 | adapter->event_skb = skb; | |
129 | break; | |
130 | default: | |
131 | mwifiex_dbg(adapter, ERROR, | |
132 | "unknown recv_type %#x\n", recv_type); | |
133 | return -1; | |
134 | } | |
135 | break; | |
136 | case MWIFIEX_USB_EP_DATA: | |
137 | mwifiex_dbg(adapter, DATA, "%s: EP_DATA\n", __func__); | |
138 | if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) { | |
139 | mwifiex_dbg(adapter, ERROR, | |
140 | "DATA: skb->len too large\n"); | |
141 | return -1; | |
142 | } | |
143 | ||
144 | skb_queue_tail(&adapter->rx_data_q, skb); | |
145 | adapter->data_received = true; | |
146 | atomic_inc(&adapter->rx_pending); | |
147 | break; | |
148 | default: | |
149 | mwifiex_dbg(adapter, ERROR, | |
150 | "%s: unknown endport %#x\n", __func__, ep); | |
151 | return -1; | |
152 | } | |
153 | ||
154 | return -EINPROGRESS; | |
155 | ||
156 | exit_restore_skb: | |
157 | /* The buffer will be reused for further cmds/events */ | |
158 | skb_push(skb, INTF_HEADER_LEN); | |
159 | ||
160 | return ret; | |
161 | } | |
162 | ||
163 | static void mwifiex_usb_rx_complete(struct urb *urb) | |
164 | { | |
165 | struct urb_context *context = (struct urb_context *)urb->context; | |
166 | struct mwifiex_adapter *adapter = context->adapter; | |
167 | struct sk_buff *skb = context->skb; | |
168 | struct usb_card_rec *card; | |
169 | int recv_length = urb->actual_length; | |
170 | int size, status; | |
171 | ||
172 | if (!adapter || !adapter->card) { | |
173 | pr_err("mwifiex adapter or card structure is not valid\n"); | |
174 | return; | |
175 | } | |
176 | ||
177 | card = (struct usb_card_rec *)adapter->card; | |
178 | if (card->rx_cmd_ep == context->ep) | |
179 | atomic_dec(&card->rx_cmd_urb_pending); | |
180 | else | |
181 | atomic_dec(&card->rx_data_urb_pending); | |
182 | ||
183 | if (recv_length) { | |
184 | if (urb->status || (adapter->surprise_removed)) { | |
185 | mwifiex_dbg(adapter, ERROR, | |
186 | "URB status is failed: %d\n", urb->status); | |
187 | /* Do not free skb in case of command ep */ | |
188 | if (card->rx_cmd_ep != context->ep) | |
189 | dev_kfree_skb_any(skb); | |
190 | goto setup_for_next; | |
191 | } | |
192 | if (skb->len > recv_length) | |
193 | skb_trim(skb, recv_length); | |
194 | else | |
195 | skb_put(skb, recv_length - skb->len); | |
196 | ||
197 | status = mwifiex_usb_recv(adapter, skb, context->ep); | |
198 | ||
199 | mwifiex_dbg(adapter, INFO, | |
200 | "info: recv_length=%d, status=%d\n", | |
201 | recv_length, status); | |
202 | if (status == -EINPROGRESS) { | |
203 | mwifiex_queue_main_work(adapter); | |
204 | ||
205 | /* urb for data_ep is re-submitted now; | |
206 | * urb for cmd_ep will be re-submitted in callback | |
207 | * mwifiex_usb_recv_complete | |
208 | */ | |
209 | if (card->rx_cmd_ep == context->ep) | |
210 | return; | |
211 | } else { | |
212 | if (status == -1) | |
213 | mwifiex_dbg(adapter, ERROR, | |
214 | "received data processing failed!\n"); | |
215 | ||
216 | /* Do not free skb in case of command ep */ | |
217 | if (card->rx_cmd_ep != context->ep) | |
218 | dev_kfree_skb_any(skb); | |
219 | } | |
220 | } else if (urb->status) { | |
221 | if (!adapter->is_suspended) { | |
222 | mwifiex_dbg(adapter, FATAL, | |
223 | "Card is removed: %d\n", urb->status); | |
224 | adapter->surprise_removed = true; | |
225 | } | |
226 | dev_kfree_skb_any(skb); | |
227 | return; | |
228 | } else { | |
229 | /* Do not free skb in case of command ep */ | |
230 | if (card->rx_cmd_ep != context->ep) | |
231 | dev_kfree_skb_any(skb); | |
232 | ||
233 | /* fall through setup_for_next */ | |
234 | } | |
235 | ||
236 | setup_for_next: | |
237 | if (card->rx_cmd_ep == context->ep) | |
238 | size = MWIFIEX_RX_CMD_BUF_SIZE; | |
239 | else | |
240 | size = MWIFIEX_RX_DATA_BUF_SIZE; | |
241 | ||
242 | if (card->rx_cmd_ep == context->ep) { | |
243 | mwifiex_usb_submit_rx_urb(context, size); | |
244 | } else { | |
245 | if (atomic_read(&adapter->rx_pending) <= HIGH_RX_PENDING) { | |
246 | mwifiex_usb_submit_rx_urb(context, size); | |
247 | } else { | |
248 | context->skb = NULL; | |
249 | } | |
250 | } | |
251 | ||
252 | return; | |
253 | } | |
254 | ||
255 | static void mwifiex_usb_tx_complete(struct urb *urb) | |
256 | { | |
257 | struct urb_context *context = (struct urb_context *)(urb->context); | |
258 | struct mwifiex_adapter *adapter = context->adapter; | |
259 | struct usb_card_rec *card = adapter->card; | |
260 | struct usb_tx_data_port *port; | |
261 | int i; | |
262 | ||
263 | mwifiex_dbg(adapter, INFO, | |
264 | "%s: status: %d\n", __func__, urb->status); | |
265 | ||
266 | if (context->ep == card->tx_cmd_ep) { | |
267 | mwifiex_dbg(adapter, CMD, | |
268 | "%s: CMD\n", __func__); | |
269 | atomic_dec(&card->tx_cmd_urb_pending); | |
270 | adapter->cmd_sent = false; | |
271 | } else { | |
272 | mwifiex_dbg(adapter, DATA, | |
273 | "%s: DATA\n", __func__); | |
274 | mwifiex_write_data_complete(adapter, context->skb, 0, | |
275 | urb->status ? -1 : 0); | |
276 | for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { | |
277 | port = &card->port[i]; | |
278 | if (context->ep == port->tx_data_ep) { | |
279 | atomic_dec(&port->tx_data_urb_pending); | |
280 | port->block_status = false; | |
281 | break; | |
282 | } | |
283 | } | |
284 | adapter->data_sent = false; | |
285 | } | |
286 | ||
287 | if (card->mc_resync_flag) | |
288 | mwifiex_multi_chan_resync(adapter); | |
289 | ||
290 | mwifiex_queue_main_work(adapter); | |
291 | ||
292 | return; | |
293 | } | |
294 | ||
295 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size) | |
296 | { | |
297 | struct mwifiex_adapter *adapter = ctx->adapter; | |
298 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
299 | ||
300 | if (card->rx_cmd_ep != ctx->ep) { | |
301 | ctx->skb = dev_alloc_skb(size); | |
302 | if (!ctx->skb) { | |
303 | mwifiex_dbg(adapter, ERROR, | |
304 | "%s: dev_alloc_skb failed\n", __func__); | |
305 | return -ENOMEM; | |
306 | } | |
307 | } | |
308 | ||
309 | if (card->rx_cmd_ep == ctx->ep && | |
310 | card->rx_cmd_ep_type == USB_ENDPOINT_XFER_INT) | |
311 | usb_fill_int_urb(ctx->urb, card->udev, | |
312 | usb_rcvintpipe(card->udev, ctx->ep), | |
313 | ctx->skb->data, size, mwifiex_usb_rx_complete, | |
314 | (void *)ctx, card->rx_cmd_interval); | |
315 | else | |
316 | usb_fill_bulk_urb(ctx->urb, card->udev, | |
317 | usb_rcvbulkpipe(card->udev, ctx->ep), | |
318 | ctx->skb->data, size, mwifiex_usb_rx_complete, | |
319 | (void *)ctx); | |
320 | ||
321 | if (card->rx_cmd_ep == ctx->ep) | |
322 | atomic_inc(&card->rx_cmd_urb_pending); | |
323 | else | |
324 | atomic_inc(&card->rx_data_urb_pending); | |
325 | ||
326 | if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) { | |
327 | mwifiex_dbg(adapter, ERROR, "usb_submit_urb failed\n"); | |
328 | dev_kfree_skb_any(ctx->skb); | |
329 | ctx->skb = NULL; | |
330 | ||
331 | if (card->rx_cmd_ep == ctx->ep) | |
332 | atomic_dec(&card->rx_cmd_urb_pending); | |
333 | else | |
334 | atomic_dec(&card->rx_data_urb_pending); | |
335 | ||
336 | return -1; | |
337 | } | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | static void mwifiex_usb_free(struct usb_card_rec *card) | |
343 | { | |
344 | struct usb_tx_data_port *port; | |
345 | int i, j; | |
346 | ||
347 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) | |
348 | usb_kill_urb(card->rx_cmd.urb); | |
349 | ||
350 | usb_free_urb(card->rx_cmd.urb); | |
351 | card->rx_cmd.urb = NULL; | |
352 | ||
353 | if (atomic_read(&card->rx_data_urb_pending)) | |
354 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
355 | if (card->rx_data_list[i].urb) | |
356 | usb_kill_urb(card->rx_data_list[i].urb); | |
357 | ||
358 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { | |
359 | usb_free_urb(card->rx_data_list[i].urb); | |
360 | card->rx_data_list[i].urb = NULL; | |
361 | } | |
362 | ||
363 | for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { | |
364 | port = &card->port[i]; | |
365 | for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { | |
366 | usb_kill_urb(port->tx_data_list[j].urb); | |
367 | usb_free_urb(port->tx_data_list[j].urb); | |
368 | port->tx_data_list[j].urb = NULL; | |
369 | } | |
370 | } | |
371 | ||
372 | usb_free_urb(card->tx_cmd.urb); | |
373 | card->tx_cmd.urb = NULL; | |
374 | ||
375 | return; | |
376 | } | |
377 | ||
378 | /* This function probes an mwifiex device and registers it. It allocates | |
379 | * the card structure, initiates the device registration and initialization | |
380 | * procedure by adding a logical interface. | |
381 | */ | |
382 | static int mwifiex_usb_probe(struct usb_interface *intf, | |
383 | const struct usb_device_id *id) | |
384 | { | |
385 | struct usb_device *udev = interface_to_usbdev(intf); | |
386 | struct usb_host_interface *iface_desc = intf->cur_altsetting; | |
387 | struct usb_endpoint_descriptor *epd; | |
388 | int ret, i; | |
389 | struct usb_card_rec *card; | |
390 | u16 id_vendor, id_product, bcd_device; | |
391 | ||
392 | card = devm_kzalloc(&intf->dev, sizeof(*card), GFP_KERNEL); | |
393 | if (!card) | |
394 | return -ENOMEM; | |
395 | ||
396 | init_completion(&card->fw_done); | |
397 | ||
398 | id_vendor = le16_to_cpu(udev->descriptor.idVendor); | |
399 | id_product = le16_to_cpu(udev->descriptor.idProduct); | |
400 | bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); | |
401 | pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n", | |
402 | id_vendor, id_product, bcd_device); | |
403 | ||
404 | /* PID_1 is used for firmware downloading only */ | |
405 | switch (id_product) { | |
406 | case USB8766_PID_1: | |
407 | case USB8797_PID_1: | |
408 | case USB8801_PID_1: | |
409 | case USB8997_PID_1: | |
410 | card->usb_boot_state = USB8XXX_FW_DNLD; | |
411 | break; | |
412 | case USB8766_PID_2: | |
413 | case USB8797_PID_2: | |
414 | case USB8801_PID_2: | |
415 | case USB8997_PID_2: | |
416 | card->usb_boot_state = USB8XXX_FW_READY; | |
417 | break; | |
418 | default: | |
419 | pr_warn("unknown id_product %#x\n", id_product); | |
420 | card->usb_boot_state = USB8XXX_FW_DNLD; | |
421 | break; | |
422 | } | |
423 | ||
424 | card->udev = udev; | |
425 | card->intf = intf; | |
426 | ||
427 | pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n", | |
428 | le16_to_cpu(udev->descriptor.bcdUSB), | |
429 | udev->descriptor.bDeviceClass, | |
430 | udev->descriptor.bDeviceSubClass, | |
431 | udev->descriptor.bDeviceProtocol); | |
432 | ||
433 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
434 | epd = &iface_desc->endpoint[i].desc; | |
435 | if (usb_endpoint_dir_in(epd) && | |
436 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && | |
437 | (usb_endpoint_xfer_bulk(epd) || | |
438 | usb_endpoint_xfer_int(epd))) { | |
439 | card->rx_cmd_ep_type = usb_endpoint_type(epd); | |
440 | card->rx_cmd_interval = epd->bInterval; | |
441 | pr_debug("info: Rx CMD/EVT:: max pkt size: %d, addr: %d, ep_type: %d\n", | |
442 | le16_to_cpu(epd->wMaxPacketSize), | |
443 | epd->bEndpointAddress, card->rx_cmd_ep_type); | |
444 | card->rx_cmd_ep = usb_endpoint_num(epd); | |
445 | atomic_set(&card->rx_cmd_urb_pending, 0); | |
446 | } | |
447 | if (usb_endpoint_dir_in(epd) && | |
448 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && | |
449 | usb_endpoint_xfer_bulk(epd)) { | |
450 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", | |
451 | le16_to_cpu(epd->wMaxPacketSize), | |
452 | epd->bEndpointAddress); | |
453 | card->rx_data_ep = usb_endpoint_num(epd); | |
454 | atomic_set(&card->rx_data_urb_pending, 0); | |
455 | } | |
456 | if (usb_endpoint_dir_out(epd) && | |
457 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && | |
458 | usb_endpoint_xfer_bulk(epd)) { | |
459 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", | |
460 | le16_to_cpu(epd->wMaxPacketSize), | |
461 | epd->bEndpointAddress); | |
462 | card->port[0].tx_data_ep = usb_endpoint_num(epd); | |
463 | atomic_set(&card->port[0].tx_data_urb_pending, 0); | |
464 | } | |
465 | if (usb_endpoint_dir_out(epd) && | |
466 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA_CH2 && | |
467 | usb_endpoint_xfer_bulk(epd)) { | |
468 | pr_debug("info: bulk OUT chan2:\t" | |
469 | "max pkt size: %d, addr: %d\n", | |
470 | le16_to_cpu(epd->wMaxPacketSize), | |
471 | epd->bEndpointAddress); | |
472 | card->port[1].tx_data_ep = usb_endpoint_num(epd); | |
473 | atomic_set(&card->port[1].tx_data_urb_pending, 0); | |
474 | } | |
475 | if (usb_endpoint_dir_out(epd) && | |
476 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && | |
477 | (usb_endpoint_xfer_bulk(epd) || | |
478 | usb_endpoint_xfer_int(epd))) { | |
479 | card->tx_cmd_ep_type = usb_endpoint_type(epd); | |
480 | card->tx_cmd_interval = epd->bInterval; | |
481 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", | |
482 | le16_to_cpu(epd->wMaxPacketSize), | |
483 | epd->bEndpointAddress); | |
484 | pr_debug("info: Tx CMD:: max pkt size: %d, addr: %d, ep_type: %d\n", | |
485 | le16_to_cpu(epd->wMaxPacketSize), | |
486 | epd->bEndpointAddress, card->tx_cmd_ep_type); | |
487 | card->tx_cmd_ep = usb_endpoint_num(epd); | |
488 | atomic_set(&card->tx_cmd_urb_pending, 0); | |
489 | card->bulk_out_maxpktsize = | |
490 | le16_to_cpu(epd->wMaxPacketSize); | |
491 | } | |
492 | } | |
493 | ||
494 | usb_set_intfdata(intf, card); | |
495 | ||
496 | ret = mwifiex_add_card(card, &card->fw_done, &usb_ops, | |
497 | MWIFIEX_USB, &card->udev->dev); | |
498 | if (ret) { | |
499 | pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); | |
500 | usb_reset_device(udev); | |
501 | return ret; | |
502 | } | |
503 | ||
504 | usb_get_dev(udev); | |
505 | ||
506 | return 0; | |
507 | } | |
508 | ||
509 | /* Kernel needs to suspend all functions separately. Therefore all | |
510 | * registered functions must have drivers with suspend and resume | |
511 | * methods. Failing that the kernel simply removes the whole card. | |
512 | * | |
513 | * If already not suspended, this function allocates and sends a | |
514 | * 'host sleep activate' request to the firmware and turns off the traffic. | |
515 | */ | |
516 | static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) | |
517 | { | |
518 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
519 | struct mwifiex_adapter *adapter; | |
520 | struct usb_tx_data_port *port; | |
521 | int i, j; | |
522 | ||
523 | /* Might still be loading firmware */ | |
524 | wait_for_completion(&card->fw_done); | |
525 | ||
526 | adapter = card->adapter; | |
527 | if (!adapter) { | |
528 | dev_err(&intf->dev, "card is not valid\n"); | |
529 | return 0; | |
530 | } | |
531 | ||
532 | if (unlikely(adapter->is_suspended)) | |
533 | mwifiex_dbg(adapter, WARN, | |
534 | "Device already suspended\n"); | |
535 | ||
536 | /* Enable the Host Sleep */ | |
537 | if (!mwifiex_enable_hs(adapter)) { | |
538 | mwifiex_dbg(adapter, ERROR, | |
539 | "cmd: failed to suspend\n"); | |
540 | adapter->hs_enabling = false; | |
541 | return -EFAULT; | |
542 | } | |
543 | ||
544 | ||
545 | /* 'is_suspended' flag indicates device is suspended. | |
546 | * It must be set here before the usb_kill_urb() calls. Reason | |
547 | * is in the complete handlers, urb->status(= -ENOENT) and | |
548 | * this flag is used in combination to distinguish between a | |
549 | * 'suspended' state and a 'disconnect' one. | |
550 | */ | |
551 | adapter->is_suspended = true; | |
552 | adapter->hs_enabling = false; | |
553 | ||
554 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) | |
555 | usb_kill_urb(card->rx_cmd.urb); | |
556 | ||
557 | if (atomic_read(&card->rx_data_urb_pending)) | |
558 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
559 | if (card->rx_data_list[i].urb) | |
560 | usb_kill_urb(card->rx_data_list[i].urb); | |
561 | ||
562 | for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { | |
563 | port = &card->port[i]; | |
564 | for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { | |
565 | if (port->tx_data_list[j].urb) | |
566 | usb_kill_urb(port->tx_data_list[j].urb); | |
567 | } | |
568 | } | |
569 | ||
570 | if (card->tx_cmd.urb) | |
571 | usb_kill_urb(card->tx_cmd.urb); | |
572 | ||
573 | return 0; | |
574 | } | |
575 | ||
576 | /* Kernel needs to suspend all functions separately. Therefore all | |
577 | * registered functions must have drivers with suspend and resume | |
578 | * methods. Failing that the kernel simply removes the whole card. | |
579 | * | |
580 | * If already not resumed, this function turns on the traffic and | |
581 | * sends a 'host sleep cancel' request to the firmware. | |
582 | */ | |
583 | static int mwifiex_usb_resume(struct usb_interface *intf) | |
584 | { | |
585 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
586 | struct mwifiex_adapter *adapter; | |
587 | int i; | |
588 | ||
589 | if (!card->adapter) { | |
590 | dev_err(&intf->dev, "%s: card->adapter is NULL\n", | |
591 | __func__); | |
592 | return 0; | |
593 | } | |
594 | adapter = card->adapter; | |
595 | ||
596 | if (unlikely(!adapter->is_suspended)) { | |
597 | mwifiex_dbg(adapter, WARN, | |
598 | "Device already resumed\n"); | |
599 | return 0; | |
600 | } | |
601 | ||
602 | /* Indicate device resumed. The netdev queue will be resumed only | |
603 | * after the urbs have been re-submitted | |
604 | */ | |
605 | adapter->is_suspended = false; | |
606 | ||
607 | if (!atomic_read(&card->rx_data_urb_pending)) | |
608 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) | |
609 | mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], | |
610 | MWIFIEX_RX_DATA_BUF_SIZE); | |
611 | ||
612 | if (!atomic_read(&card->rx_cmd_urb_pending)) { | |
613 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); | |
614 | if (card->rx_cmd.skb) | |
615 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, | |
616 | MWIFIEX_RX_CMD_BUF_SIZE); | |
617 | } | |
618 | ||
619 | /* Disable Host Sleep */ | |
620 | if (adapter->hs_activated) | |
621 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, | |
622 | MWIFIEX_BSS_ROLE_ANY), | |
623 | MWIFIEX_ASYNC_CMD); | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | static void mwifiex_usb_disconnect(struct usb_interface *intf) | |
629 | { | |
630 | struct usb_card_rec *card = usb_get_intfdata(intf); | |
631 | struct mwifiex_adapter *adapter; | |
632 | ||
633 | wait_for_completion(&card->fw_done); | |
634 | ||
635 | adapter = card->adapter; | |
636 | if (!adapter || !adapter->priv_num) | |
637 | return; | |
638 | ||
639 | if (card->udev->state != USB_STATE_NOTATTACHED && !adapter->mfg_mode) { | |
640 | mwifiex_deauthenticate_all(adapter); | |
641 | ||
642 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, | |
643 | MWIFIEX_BSS_ROLE_ANY), | |
644 | MWIFIEX_FUNC_SHUTDOWN); | |
645 | } | |
646 | ||
647 | mwifiex_usb_free(card); | |
648 | ||
649 | mwifiex_dbg(adapter, FATAL, | |
650 | "%s: removing card\n", __func__); | |
651 | mwifiex_remove_card(adapter); | |
652 | ||
653 | usb_put_dev(interface_to_usbdev(intf)); | |
654 | } | |
655 | ||
656 | static struct usb_driver mwifiex_usb_driver = { | |
657 | .name = "mwifiex_usb", | |
658 | .probe = mwifiex_usb_probe, | |
659 | .disconnect = mwifiex_usb_disconnect, | |
660 | .id_table = mwifiex_usb_table, | |
661 | .suspend = mwifiex_usb_suspend, | |
662 | .resume = mwifiex_usb_resume, | |
663 | .soft_unbind = 1, | |
664 | }; | |
665 | ||
666 | static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) | |
667 | { | |
668 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
669 | struct usb_tx_data_port *port; | |
670 | int i, j; | |
671 | ||
672 | card->tx_cmd.adapter = adapter; | |
673 | card->tx_cmd.ep = card->tx_cmd_ep; | |
674 | ||
675 | card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); | |
676 | if (!card->tx_cmd.urb) | |
677 | return -ENOMEM; | |
678 | ||
679 | for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { | |
680 | port = &card->port[i]; | |
681 | if (!port->tx_data_ep) | |
682 | continue; | |
683 | port->tx_data_ix = 0; | |
684 | skb_queue_head_init(&port->tx_aggr.aggr_list); | |
685 | if (port->tx_data_ep == MWIFIEX_USB_EP_DATA) | |
686 | port->block_status = false; | |
687 | else | |
688 | port->block_status = true; | |
689 | for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { | |
690 | port->tx_data_list[j].adapter = adapter; | |
691 | port->tx_data_list[j].ep = port->tx_data_ep; | |
692 | port->tx_data_list[j].urb = | |
693 | usb_alloc_urb(0, GFP_KERNEL); | |
694 | if (!port->tx_data_list[j].urb) | |
695 | return -ENOMEM; | |
696 | } | |
697 | } | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) | |
703 | { | |
704 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
705 | int i; | |
706 | ||
707 | card->rx_cmd.adapter = adapter; | |
708 | card->rx_cmd.ep = card->rx_cmd_ep; | |
709 | ||
710 | card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); | |
711 | if (!card->rx_cmd.urb) | |
712 | return -ENOMEM; | |
713 | ||
714 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); | |
715 | if (!card->rx_cmd.skb) | |
716 | return -ENOMEM; | |
717 | ||
718 | if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) | |
719 | return -1; | |
720 | ||
721 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { | |
722 | card->rx_data_list[i].adapter = adapter; | |
723 | card->rx_data_list[i].ep = card->rx_data_ep; | |
724 | ||
725 | card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); | |
726 | if (!card->rx_data_list[i].urb) | |
727 | return -1; | |
728 | if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], | |
729 | MWIFIEX_RX_DATA_BUF_SIZE)) | |
730 | return -1; | |
731 | } | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
736 | static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, | |
737 | u32 *len, u8 ep, u32 timeout) | |
738 | { | |
739 | struct usb_card_rec *card = adapter->card; | |
740 | int actual_length, ret; | |
741 | ||
742 | if (!(*len % card->bulk_out_maxpktsize)) | |
743 | (*len)++; | |
744 | ||
745 | /* Send the data block */ | |
746 | ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, | |
747 | *len, &actual_length, timeout); | |
748 | if (ret) { | |
749 | mwifiex_dbg(adapter, ERROR, | |
750 | "usb_bulk_msg for tx failed: %d\n", ret); | |
751 | return ret; | |
752 | } | |
753 | ||
754 | *len = actual_length; | |
755 | ||
756 | return ret; | |
757 | } | |
758 | ||
759 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, | |
760 | u32 *len, u8 ep, u32 timeout) | |
761 | { | |
762 | struct usb_card_rec *card = adapter->card; | |
763 | int actual_length, ret; | |
764 | ||
765 | /* Receive the data response */ | |
766 | ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, | |
767 | *len, &actual_length, timeout); | |
768 | if (ret) { | |
769 | mwifiex_dbg(adapter, ERROR, | |
770 | "usb_bulk_msg for rx failed: %d\n", ret); | |
771 | return ret; | |
772 | } | |
773 | ||
774 | *len = actual_length; | |
775 | ||
776 | return ret; | |
777 | } | |
778 | ||
779 | static void mwifiex_usb_port_resync(struct mwifiex_adapter *adapter) | |
780 | { | |
781 | struct usb_card_rec *card = adapter->card; | |
782 | u8 active_port = MWIFIEX_USB_EP_DATA; | |
783 | struct mwifiex_private *priv = NULL; | |
784 | int i; | |
785 | ||
786 | if (adapter->usb_mc_status) { | |
787 | for (i = 0; i < adapter->priv_num; i++) { | |
788 | priv = adapter->priv[i]; | |
789 | if (!priv) | |
790 | continue; | |
791 | if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && | |
792 | !priv->bss_started) || | |
793 | (priv->bss_role == MWIFIEX_BSS_ROLE_STA && | |
794 | !priv->media_connected)) | |
795 | priv->usb_port = MWIFIEX_USB_EP_DATA; | |
796 | } | |
797 | for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) | |
798 | card->port[i].block_status = false; | |
799 | } else { | |
800 | for (i = 0; i < adapter->priv_num; i++) { | |
801 | priv = adapter->priv[i]; | |
802 | if (!priv) | |
803 | continue; | |
804 | if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && | |
805 | priv->bss_started) || | |
806 | (priv->bss_role == MWIFIEX_BSS_ROLE_STA && | |
807 | priv->media_connected)) { | |
808 | active_port = priv->usb_port; | |
809 | break; | |
810 | } | |
811 | } | |
812 | for (i = 0; i < adapter->priv_num; i++) { | |
813 | priv = adapter->priv[i]; | |
814 | if (priv) | |
815 | priv->usb_port = active_port; | |
816 | } | |
817 | for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { | |
818 | if (active_port == card->port[i].tx_data_ep) | |
819 | card->port[i].block_status = false; | |
820 | else | |
821 | card->port[i].block_status = true; | |
822 | } | |
823 | } | |
824 | } | |
825 | ||
826 | static bool mwifiex_usb_is_port_ready(struct mwifiex_private *priv) | |
827 | { | |
828 | struct usb_card_rec *card = priv->adapter->card; | |
829 | int idx; | |
830 | ||
831 | for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { | |
832 | if (priv->usb_port == card->port[idx].tx_data_ep) | |
833 | return !card->port[idx].block_status; | |
834 | } | |
835 | ||
836 | return false; | |
837 | } | |
838 | ||
839 | static inline u8 mwifiex_usb_data_sent(struct mwifiex_adapter *adapter) | |
840 | { | |
841 | struct usb_card_rec *card = adapter->card; | |
842 | int i; | |
843 | ||
844 | for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) | |
845 | if (!card->port[i].block_status) | |
846 | return false; | |
847 | ||
848 | return true; | |
849 | } | |
850 | ||
851 | static int mwifiex_usb_construct_send_urb(struct mwifiex_adapter *adapter, | |
852 | struct usb_tx_data_port *port, u8 ep, | |
853 | struct urb_context *context, | |
854 | struct sk_buff *skb_send) | |
855 | { | |
856 | struct usb_card_rec *card = adapter->card; | |
857 | int ret = -EINPROGRESS; | |
858 | struct urb *tx_urb; | |
859 | ||
860 | context->adapter = adapter; | |
861 | context->ep = ep; | |
862 | context->skb = skb_send; | |
863 | tx_urb = context->urb; | |
864 | ||
865 | if (ep == card->tx_cmd_ep && | |
866 | card->tx_cmd_ep_type == USB_ENDPOINT_XFER_INT) | |
867 | usb_fill_int_urb(tx_urb, card->udev, | |
868 | usb_sndintpipe(card->udev, ep), skb_send->data, | |
869 | skb_send->len, mwifiex_usb_tx_complete, | |
870 | (void *)context, card->tx_cmd_interval); | |
871 | else | |
872 | usb_fill_bulk_urb(tx_urb, card->udev, | |
873 | usb_sndbulkpipe(card->udev, ep), | |
874 | skb_send->data, skb_send->len, | |
875 | mwifiex_usb_tx_complete, (void *)context); | |
876 | ||
877 | tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
878 | ||
879 | if (ep == card->tx_cmd_ep) | |
880 | atomic_inc(&card->tx_cmd_urb_pending); | |
881 | else | |
882 | atomic_inc(&port->tx_data_urb_pending); | |
883 | ||
884 | if (ep != card->tx_cmd_ep && | |
885 | atomic_read(&port->tx_data_urb_pending) == | |
886 | MWIFIEX_TX_DATA_URB) { | |
887 | port->block_status = true; | |
888 | adapter->data_sent = mwifiex_usb_data_sent(adapter); | |
889 | ret = -ENOSR; | |
890 | } | |
891 | ||
892 | if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { | |
893 | mwifiex_dbg(adapter, ERROR, | |
894 | "%s: usb_submit_urb failed\n", __func__); | |
895 | if (ep == card->tx_cmd_ep) { | |
896 | atomic_dec(&card->tx_cmd_urb_pending); | |
897 | } else { | |
898 | atomic_dec(&port->tx_data_urb_pending); | |
899 | port->block_status = false; | |
900 | adapter->data_sent = false; | |
901 | if (port->tx_data_ix) | |
902 | port->tx_data_ix--; | |
903 | else | |
904 | port->tx_data_ix = MWIFIEX_TX_DATA_URB; | |
905 | } | |
906 | ret = -1; | |
907 | } | |
908 | ||
909 | return ret; | |
910 | } | |
911 | ||
912 | static int mwifiex_usb_prepare_tx_aggr_skb(struct mwifiex_adapter *adapter, | |
913 | struct usb_tx_data_port *port, | |
914 | struct sk_buff **skb_send) | |
915 | { | |
916 | struct sk_buff *skb_aggr, *skb_tmp; | |
917 | u8 *payload, pad; | |
918 | u16 align = adapter->bus_aggr.tx_aggr_align; | |
919 | struct mwifiex_txinfo *tx_info = NULL; | |
920 | bool is_txinfo_set = false; | |
921 | ||
922 | skb_aggr = mwifiex_alloc_dma_align_buf(port->tx_aggr.aggr_len, | |
923 | GFP_ATOMIC); | |
924 | if (!skb_aggr) { | |
925 | mwifiex_dbg(adapter, ERROR, | |
926 | "%s: alloc skb_aggr failed\n", __func__); | |
927 | ||
928 | while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) | |
929 | mwifiex_write_data_complete(adapter, skb_tmp, 0, -1); | |
930 | ||
931 | port->tx_aggr.aggr_num = 0; | |
932 | port->tx_aggr.aggr_len = 0; | |
933 | return -EBUSY; | |
934 | } | |
935 | ||
936 | tx_info = MWIFIEX_SKB_TXCB(skb_aggr); | |
937 | memset(tx_info, 0, sizeof(*tx_info)); | |
938 | ||
939 | while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) { | |
940 | /* padding for aligning next packet header*/ | |
941 | pad = (align - (skb_tmp->len & (align - 1))) % align; | |
942 | payload = skb_put(skb_aggr, skb_tmp->len + pad); | |
943 | memcpy(payload, skb_tmp->data, skb_tmp->len); | |
944 | if (skb_queue_empty(&port->tx_aggr.aggr_list)) { | |
945 | /* do not padding for last packet*/ | |
946 | *(u16 *)payload = cpu_to_le16(skb_tmp->len); | |
947 | *(u16 *)&payload[2] = | |
948 | cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); | |
949 | skb_trim(skb_aggr, skb_aggr->len - pad); | |
950 | } else { | |
951 | /* add aggregation interface header */ | |
952 | *(u16 *)payload = cpu_to_le16(skb_tmp->len + pad); | |
953 | *(u16 *)&payload[2] = | |
954 | cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2); | |
955 | } | |
956 | ||
957 | if (!is_txinfo_set) { | |
958 | tx_info->bss_num = MWIFIEX_SKB_TXCB(skb_tmp)->bss_num; | |
959 | tx_info->bss_type = MWIFIEX_SKB_TXCB(skb_tmp)->bss_type; | |
960 | is_txinfo_set = true; | |
961 | } | |
962 | ||
963 | port->tx_aggr.aggr_num--; | |
964 | port->tx_aggr.aggr_len -= (skb_tmp->len + pad); | |
965 | mwifiex_write_data_complete(adapter, skb_tmp, 0, 0); | |
966 | } | |
967 | ||
968 | tx_info->pkt_len = skb_aggr->len - | |
969 | (sizeof(struct txpd) + adapter->intf_hdr_len); | |
970 | tx_info->flags |= MWIFIEX_BUF_FLAG_AGGR_PKT; | |
971 | ||
972 | port->tx_aggr.aggr_num = 0; | |
973 | port->tx_aggr.aggr_len = 0; | |
974 | *skb_send = skb_aggr; | |
975 | ||
976 | return 0; | |
977 | } | |
978 | ||
979 | /* This function prepare data packet to be send under usb tx aggregation | |
980 | * protocol, check current usb aggregation status, link packet to aggrgation | |
981 | * list if possible, work flow as below: | |
982 | * (1) if only 1 packet available, add usb tx aggregation header and send. | |
983 | * (2) if packet is able to aggregated, link it to current aggregation list. | |
984 | * (3) if packet is not able to aggregated, aggregate and send exist packets | |
985 | * in aggrgation list. Then, link packet in the list if there is more | |
986 | * packet in transmit queue, otherwise try to transmit single packet. | |
987 | */ | |
988 | static int mwifiex_usb_aggr_tx_data(struct mwifiex_adapter *adapter, u8 ep, | |
989 | struct sk_buff *skb, | |
990 | struct mwifiex_tx_param *tx_param, | |
991 | struct usb_tx_data_port *port) | |
992 | { | |
993 | u8 *payload, pad; | |
994 | u16 align = adapter->bus_aggr.tx_aggr_align; | |
995 | struct sk_buff *skb_send = NULL; | |
996 | struct urb_context *context = NULL; | |
997 | struct txpd *local_tx_pd = | |
998 | (struct txpd *)((u8 *)skb->data + adapter->intf_hdr_len); | |
999 | u8 f_send_aggr_buf = 0; | |
1000 | u8 f_send_cur_buf = 0; | |
1001 | u8 f_precopy_cur_buf = 0; | |
1002 | u8 f_postcopy_cur_buf = 0; | |
1003 | int ret; | |
1004 | ||
1005 | /* padding to ensure each packet alginment */ | |
1006 | pad = (align - (skb->len & (align - 1))) % align; | |
1007 | ||
1008 | if (tx_param && tx_param->next_pkt_len) { | |
1009 | /* next packet available in tx queue*/ | |
1010 | if (port->tx_aggr.aggr_len + skb->len + pad > | |
1011 | adapter->bus_aggr.tx_aggr_max_size) { | |
1012 | f_send_aggr_buf = 1; | |
1013 | f_postcopy_cur_buf = 1; | |
1014 | } else { | |
1015 | /* current packet could be aggregated*/ | |
1016 | f_precopy_cur_buf = 1; | |
1017 | ||
1018 | if (port->tx_aggr.aggr_len + skb->len + pad + | |
1019 | tx_param->next_pkt_len > | |
1020 | adapter->bus_aggr.tx_aggr_max_size || | |
1021 | port->tx_aggr.aggr_num + 2 > | |
1022 | adapter->bus_aggr.tx_aggr_max_num) { | |
1023 | /* next packet could not be aggregated | |
1024 | * send current aggregation buffer | |
1025 | */ | |
1026 | f_send_aggr_buf = 1; | |
1027 | } | |
1028 | } | |
1029 | } else { | |
1030 | /* last packet in tx queue */ | |
1031 | if (port->tx_aggr.aggr_num > 0) { | |
1032 | /* pending packets in aggregation buffer*/ | |
1033 | if (port->tx_aggr.aggr_len + skb->len + pad > | |
1034 | adapter->bus_aggr.tx_aggr_max_size) { | |
1035 | /* current packet not be able to aggregated, | |
1036 | * send aggr buffer first, then send packet. | |
1037 | */ | |
1038 | f_send_cur_buf = 1; | |
1039 | } else { | |
1040 | /* last packet, Aggregation and send */ | |
1041 | f_precopy_cur_buf = 1; | |
1042 | } | |
1043 | ||
1044 | f_send_aggr_buf = 1; | |
1045 | } else { | |
1046 | /* no pending packets in aggregation buffer, | |
1047 | * send current packet immediately | |
1048 | */ | |
1049 | f_send_cur_buf = 1; | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | if (local_tx_pd->flags & MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET) { | |
1054 | /* Send NULL packet immediately*/ | |
1055 | if (f_precopy_cur_buf) { | |
1056 | if (skb_queue_empty(&port->tx_aggr.aggr_list)) { | |
1057 | f_precopy_cur_buf = 0; | |
1058 | f_send_aggr_buf = 0; | |
1059 | f_send_cur_buf = 1; | |
1060 | } else { | |
1061 | f_send_aggr_buf = 1; | |
1062 | } | |
1063 | } else if (f_postcopy_cur_buf) { | |
1064 | f_send_cur_buf = 1; | |
1065 | f_postcopy_cur_buf = 0; | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | if (f_precopy_cur_buf) { | |
1070 | skb_queue_tail(&port->tx_aggr.aggr_list, skb); | |
1071 | port->tx_aggr.aggr_len += (skb->len + pad); | |
1072 | port->tx_aggr.aggr_num++; | |
1073 | } | |
1074 | ||
1075 | if (f_send_aggr_buf) { | |
1076 | ret = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); | |
1077 | if (!ret) { | |
1078 | context = &port->tx_data_list[port->tx_data_ix++]; | |
1079 | ret = mwifiex_usb_construct_send_urb(adapter, port, ep, | |
1080 | context, skb_send); | |
1081 | if (ret == -1) | |
1082 | mwifiex_write_data_complete(adapter, skb_send, | |
1083 | 0, -1); | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | if (f_send_cur_buf) { | |
1088 | if (f_send_aggr_buf) { | |
1089 | if (atomic_read(&port->tx_data_urb_pending) >= | |
1090 | MWIFIEX_TX_DATA_URB) { | |
1091 | port->block_status = true; | |
1092 | adapter->data_sent = | |
1093 | mwifiex_usb_data_sent(adapter); | |
1094 | /* no available urb, postcopy packet*/ | |
1095 | f_postcopy_cur_buf = 1; | |
1096 | goto postcopy_cur_buf; | |
1097 | } | |
1098 | ||
1099 | if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) | |
1100 | port->tx_data_ix = 0; | |
1101 | } | |
1102 | ||
1103 | payload = skb->data; | |
1104 | *(u16 *)&payload[2] = | |
1105 | cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); | |
1106 | *(u16 *)payload = cpu_to_le16(skb->len); | |
1107 | skb_send = skb; | |
1108 | context = &port->tx_data_list[port->tx_data_ix++]; | |
1109 | return mwifiex_usb_construct_send_urb(adapter, port, ep, | |
1110 | context, skb_send); | |
1111 | } | |
1112 | ||
1113 | postcopy_cur_buf: | |
1114 | if (f_postcopy_cur_buf) { | |
1115 | skb_queue_tail(&port->tx_aggr.aggr_list, skb); | |
1116 | port->tx_aggr.aggr_len += (skb->len + pad); | |
1117 | port->tx_aggr.aggr_num++; | |
1118 | } | |
1119 | ||
1120 | return -EINPROGRESS; | |
1121 | } | |
1122 | ||
1123 | /* This function write a command/data packet to card. */ | |
1124 | static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, | |
1125 | struct sk_buff *skb, | |
1126 | struct mwifiex_tx_param *tx_param) | |
1127 | { | |
1128 | struct usb_card_rec *card = adapter->card; | |
1129 | struct urb_context *context = NULL; | |
1130 | struct usb_tx_data_port *port = NULL; | |
1131 | int idx; | |
1132 | ||
1133 | if (adapter->is_suspended) { | |
1134 | mwifiex_dbg(adapter, ERROR, | |
1135 | "%s: not allowed while suspended\n", __func__); | |
1136 | return -1; | |
1137 | } | |
1138 | ||
1139 | if (adapter->surprise_removed) { | |
1140 | mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__); | |
1141 | return -1; | |
1142 | } | |
1143 | ||
1144 | mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep); | |
1145 | ||
1146 | if (ep == card->tx_cmd_ep) { | |
1147 | context = &card->tx_cmd; | |
1148 | } else { | |
1149 | /* get the data port structure for endpoint */ | |
1150 | for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { | |
1151 | if (ep == card->port[idx].tx_data_ep) { | |
1152 | port = &card->port[idx]; | |
1153 | if (atomic_read(&port->tx_data_urb_pending) | |
1154 | >= MWIFIEX_TX_DATA_URB) { | |
1155 | port->block_status = true; | |
1156 | adapter->data_sent = | |
1157 | mwifiex_usb_data_sent(adapter); | |
1158 | return -EBUSY; | |
1159 | } | |
1160 | if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) | |
1161 | port->tx_data_ix = 0; | |
1162 | break; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | if (!port) { | |
1167 | mwifiex_dbg(adapter, ERROR, "Wrong usb tx data port\n"); | |
1168 | return -1; | |
1169 | } | |
1170 | ||
1171 | if (adapter->bus_aggr.enable) | |
1172 | return mwifiex_usb_aggr_tx_data(adapter, ep, skb, | |
1173 | tx_param, port); | |
1174 | ||
1175 | context = &port->tx_data_list[port->tx_data_ix++]; | |
1176 | } | |
1177 | ||
1178 | return mwifiex_usb_construct_send_urb(adapter, port, ep, context, skb); | |
1179 | } | |
1180 | ||
1181 | /* This function register usb device and initialize parameter. */ | |
1182 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
1183 | { | |
1184 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
1185 | ||
1186 | card->adapter = adapter; | |
1187 | ||
1188 | switch (le16_to_cpu(card->udev->descriptor.idProduct)) { | |
1189 | case USB8997_PID_1: | |
1190 | case USB8997_PID_2: | |
1191 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K; | |
1192 | strcpy(adapter->fw_name, USB8997_DEFAULT_FW_NAME); | |
1193 | adapter->ext_scan = true; | |
1194 | break; | |
1195 | case USB8766_PID_1: | |
1196 | case USB8766_PID_2: | |
1197 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; | |
1198 | strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME); | |
1199 | adapter->ext_scan = true; | |
1200 | break; | |
1201 | case USB8801_PID_1: | |
1202 | case USB8801_PID_2: | |
1203 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; | |
1204 | strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME); | |
1205 | adapter->ext_scan = false; | |
1206 | break; | |
1207 | case USB8797_PID_1: | |
1208 | case USB8797_PID_2: | |
1209 | default: | |
1210 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; | |
1211 | strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); | |
1212 | break; | |
1213 | } | |
1214 | ||
1215 | adapter->usb_mc_status = false; | |
1216 | adapter->usb_mc_setup = false; | |
1217 | ||
1218 | return 0; | |
1219 | } | |
1220 | ||
1221 | static void mwifiex_usb_cleanup_tx_aggr(struct mwifiex_adapter *adapter) | |
1222 | { | |
1223 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
1224 | struct usb_tx_data_port *port; | |
1225 | struct sk_buff *skb_tmp; | |
1226 | int idx; | |
1227 | ||
1228 | if (adapter->bus_aggr.enable) { | |
1229 | for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { | |
1230 | port = &card->port[idx]; | |
1231 | while ((skb_tmp = | |
1232 | skb_dequeue(&port->tx_aggr.aggr_list))) | |
1233 | mwifiex_write_data_complete(adapter, skb_tmp, | |
1234 | 0, -1); | |
1235 | } | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) | |
1240 | { | |
1241 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
1242 | ||
1243 | if (adapter->bus_aggr.enable) | |
1244 | mwifiex_usb_cleanup_tx_aggr(adapter); | |
1245 | ||
1246 | card->adapter = NULL; | |
1247 | } | |
1248 | ||
1249 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
1250 | struct mwifiex_fw_image *fw) | |
1251 | { | |
1252 | int ret = 0; | |
1253 | u8 *firmware = fw->fw_buf, *recv_buff; | |
1254 | u32 retries = USB8XXX_FW_MAX_RETRY + 1; | |
1255 | u32 dlen; | |
1256 | u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; | |
1257 | struct fw_data *fwdata; | |
1258 | struct fw_sync_header sync_fw; | |
1259 | u8 check_winner = 1; | |
1260 | ||
1261 | if (!firmware) { | |
1262 | mwifiex_dbg(adapter, ERROR, | |
1263 | "No firmware image found! Terminating download\n"); | |
1264 | ret = -1; | |
1265 | goto fw_exit; | |
1266 | } | |
1267 | ||
1268 | /* Allocate memory for transmit */ | |
1269 | fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); | |
1270 | if (!fwdata) { | |
1271 | ret = -ENOMEM; | |
1272 | goto fw_exit; | |
1273 | } | |
1274 | ||
1275 | /* Allocate memory for receive */ | |
1276 | recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); | |
1277 | if (!recv_buff) { | |
1278 | ret = -ENOMEM; | |
1279 | goto cleanup; | |
1280 | } | |
1281 | ||
1282 | do { | |
1283 | /* Send pseudo data to check winner status first */ | |
1284 | if (check_winner) { | |
1285 | memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); | |
1286 | dlen = 0; | |
1287 | } else { | |
1288 | /* copy the header of the fw_data to get the length */ | |
1289 | memcpy(&fwdata->fw_hdr, &firmware[tlen], | |
1290 | sizeof(struct fw_header)); | |
1291 | ||
1292 | dlen = le32_to_cpu(fwdata->fw_hdr.data_len); | |
1293 | dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); | |
1294 | tlen += sizeof(struct fw_header); | |
1295 | ||
1296 | /* Command 7 doesn't have data length field */ | |
1297 | if (dnld_cmd == FW_CMD_7) | |
1298 | dlen = 0; | |
1299 | ||
1300 | memcpy(fwdata->data, &firmware[tlen], dlen); | |
1301 | ||
1302 | fwdata->seq_num = cpu_to_le32(fw_seqnum); | |
1303 | tlen += dlen; | |
1304 | } | |
1305 | ||
1306 | /* If the send/receive fails or CRC occurs then retry */ | |
1307 | while (--retries) { | |
1308 | u8 *buf = (u8 *)fwdata; | |
1309 | u32 len = FW_DATA_XMIT_SIZE; | |
1310 | ||
1311 | /* send the firmware block */ | |
1312 | ret = mwifiex_write_data_sync(adapter, buf, &len, | |
1313 | MWIFIEX_USB_EP_CMD_EVENT, | |
1314 | MWIFIEX_USB_TIMEOUT); | |
1315 | if (ret) { | |
1316 | mwifiex_dbg(adapter, ERROR, | |
1317 | "write_data_sync: failed: %d\n", | |
1318 | ret); | |
1319 | continue; | |
1320 | } | |
1321 | ||
1322 | buf = recv_buff; | |
1323 | len = FW_DNLD_RX_BUF_SIZE; | |
1324 | ||
1325 | /* Receive the firmware block response */ | |
1326 | ret = mwifiex_read_data_sync(adapter, buf, &len, | |
1327 | MWIFIEX_USB_EP_CMD_EVENT, | |
1328 | MWIFIEX_USB_TIMEOUT); | |
1329 | if (ret) { | |
1330 | mwifiex_dbg(adapter, ERROR, | |
1331 | "read_data_sync: failed: %d\n", | |
1332 | ret); | |
1333 | continue; | |
1334 | } | |
1335 | ||
1336 | memcpy(&sync_fw, recv_buff, | |
1337 | sizeof(struct fw_sync_header)); | |
1338 | ||
1339 | /* check 1st firmware block resp for highest bit set */ | |
1340 | if (check_winner) { | |
1341 | if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { | |
1342 | mwifiex_dbg(adapter, WARN, | |
1343 | "USB is not the winner %#x\n", | |
1344 | sync_fw.cmd); | |
1345 | ||
1346 | /* returning success */ | |
1347 | ret = 0; | |
1348 | goto cleanup; | |
1349 | } | |
1350 | ||
1351 | mwifiex_dbg(adapter, MSG, | |
1352 | "start to download FW...\n"); | |
1353 | ||
1354 | check_winner = 0; | |
1355 | break; | |
1356 | } | |
1357 | ||
1358 | /* check the firmware block response for CRC errors */ | |
1359 | if (sync_fw.cmd) { | |
1360 | mwifiex_dbg(adapter, ERROR, | |
1361 | "FW received block with CRC %#x\n", | |
1362 | sync_fw.cmd); | |
1363 | ret = -1; | |
1364 | continue; | |
1365 | } | |
1366 | ||
1367 | retries = USB8XXX_FW_MAX_RETRY + 1; | |
1368 | break; | |
1369 | } | |
1370 | fw_seqnum++; | |
1371 | } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); | |
1372 | ||
1373 | cleanup: | |
1374 | mwifiex_dbg(adapter, MSG, | |
1375 | "info: FW download over, size %d bytes\n", tlen); | |
1376 | ||
1377 | kfree(recv_buff); | |
1378 | kfree(fwdata); | |
1379 | ||
1380 | if (retries) | |
1381 | ret = 0; | |
1382 | fw_exit: | |
1383 | return ret; | |
1384 | } | |
1385 | ||
1386 | static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, | |
1387 | struct mwifiex_fw_image *fw) | |
1388 | { | |
1389 | int ret; | |
1390 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
1391 | ||
1392 | if (card->usb_boot_state == USB8XXX_FW_DNLD) { | |
1393 | ret = mwifiex_prog_fw_w_helper(adapter, fw); | |
1394 | if (ret) | |
1395 | return -1; | |
1396 | ||
1397 | /* Boot state changes after successful firmware download */ | |
1398 | if (card->usb_boot_state == USB8XXX_FW_DNLD) | |
1399 | return -1; | |
1400 | } | |
1401 | ||
1402 | ret = mwifiex_usb_rx_init(adapter); | |
1403 | if (!ret) | |
1404 | ret = mwifiex_usb_tx_init(adapter); | |
1405 | ||
1406 | return ret; | |
1407 | } | |
1408 | ||
1409 | static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) | |
1410 | { | |
1411 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
1412 | ||
1413 | skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); | |
1414 | if ((ep == card->rx_cmd_ep) && | |
1415 | (!atomic_read(&card->rx_cmd_urb_pending))) | |
1416 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, | |
1417 | MWIFIEX_RX_CMD_BUF_SIZE); | |
1418 | ||
1419 | return; | |
1420 | } | |
1421 | ||
1422 | static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, | |
1423 | struct sk_buff *skb) | |
1424 | { | |
1425 | mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); | |
1426 | ||
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | /* This function wakes up the card. */ | |
1431 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
1432 | { | |
1433 | /* Simulation of HS_AWAKE event */ | |
1434 | adapter->pm_wakeup_fw_try = false; | |
1435 | del_timer(&adapter->wakeup_timer); | |
1436 | adapter->pm_wakeup_card_req = false; | |
1437 | adapter->ps_state = PS_STATE_AWAKE; | |
1438 | ||
1439 | return 0; | |
1440 | } | |
1441 | ||
1442 | static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter) | |
1443 | { | |
1444 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; | |
1445 | int i; | |
1446 | struct urb_context *ctx; | |
1447 | ||
1448 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { | |
1449 | if (card->rx_data_list[i].skb) | |
1450 | continue; | |
1451 | ctx = &card->rx_data_list[i]; | |
1452 | mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE); | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | /* This function is called after the card has woken up. */ | |
1457 | static inline int | |
1458 | mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) | |
1459 | { | |
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | static struct mwifiex_if_ops usb_ops = { | |
1464 | .register_dev = mwifiex_register_dev, | |
1465 | .unregister_dev = mwifiex_unregister_dev, | |
1466 | .wakeup = mwifiex_pm_wakeup_card, | |
1467 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
1468 | ||
1469 | /* USB specific */ | |
1470 | .dnld_fw = mwifiex_usb_dnld_fw, | |
1471 | .cmdrsp_complete = mwifiex_usb_cmd_event_complete, | |
1472 | .event_complete = mwifiex_usb_cmd_event_complete, | |
1473 | .host_to_card = mwifiex_usb_host_to_card, | |
1474 | .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs, | |
1475 | .multi_port_resync = mwifiex_usb_port_resync, | |
1476 | .is_port_ready = mwifiex_usb_is_port_ready, | |
1477 | }; | |
1478 | ||
1479 | module_usb_driver(mwifiex_usb_driver); | |
1480 | ||
1481 | MODULE_AUTHOR("Marvell International Ltd."); | |
1482 | MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); | |
1483 | MODULE_VERSION(USB_VERSION); | |
1484 | MODULE_LICENSE("GPL v2"); | |
1485 | MODULE_FIRMWARE(USB8766_DEFAULT_FW_NAME); | |
1486 | MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME); | |
1487 | MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME); | |
1488 | MODULE_FIRMWARE(USB8997_DEFAULT_FW_NAME); |