Loading...
Note: File does not exist in v3.1.
1/**
2 * Copyright (c) 2014 Redpine Signals Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 *
16 */
17
18#include <linux/module.h>
19#include <linux/types.h>
20#include <net/rsi_91x.h>
21#include "rsi_usb.h"
22#include "rsi_hal.h"
23#include "rsi_coex.h"
24
25/* Default operating mode is wlan STA + BT */
26static u16 dev_oper_mode = DEV_OPMODE_STA_BT_DUAL;
27module_param(dev_oper_mode, ushort, 0444);
28MODULE_PARM_DESC(dev_oper_mode,
29 "1[Wi-Fi], 4[BT], 8[BT LE], 5[Wi-Fi STA + BT classic]\n"
30 "9[Wi-Fi STA + BT LE], 13[Wi-Fi STA + BT classic + BT LE]\n"
31 "6[AP + BT classic], 14[AP + BT classic + BT LE]");
32
33static int rsi_rx_urb_submit(struct rsi_hw *adapter, u8 ep_num, gfp_t flags);
34
35/**
36 * rsi_usb_card_write() - This function writes to the USB Card.
37 * @adapter: Pointer to the adapter structure.
38 * @buf: Pointer to the buffer from where the data has to be taken.
39 * @len: Length to be written.
40 * @endpoint: Type of endpoint.
41 *
42 * Return: status: 0 on success, a negative error code on failure.
43 */
44static int rsi_usb_card_write(struct rsi_hw *adapter,
45 u8 *buf,
46 u16 len,
47 u8 endpoint)
48{
49 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
50 int status;
51 u8 *seg = dev->tx_buffer;
52 int transfer;
53 int ep = dev->bulkout_endpoint_addr[endpoint - 1];
54
55 memset(seg, 0, len + RSI_USB_TX_HEAD_ROOM);
56 memcpy(seg + RSI_USB_TX_HEAD_ROOM, buf, len);
57 len += RSI_USB_TX_HEAD_ROOM;
58 transfer = len;
59 status = usb_bulk_msg(dev->usbdev,
60 usb_sndbulkpipe(dev->usbdev, ep),
61 (void *)seg,
62 (int)len,
63 &transfer,
64 HZ * 5);
65
66 if (status < 0) {
67 rsi_dbg(ERR_ZONE,
68 "Card write failed with error code :%10d\n", status);
69 dev->write_fail = 1;
70 }
71 return status;
72}
73
74/**
75 * rsi_write_multiple() - This function writes multiple bytes of information
76 * to the USB card.
77 * @adapter: Pointer to the adapter structure.
78 * @addr: Address of the register.
79 * @data: Pointer to the data that has to be written.
80 * @count: Number of multiple bytes to be written.
81 *
82 * Return: 0 on success, a negative error code on failure.
83 */
84static int rsi_write_multiple(struct rsi_hw *adapter,
85 u8 endpoint,
86 u8 *data,
87 u32 count)
88{
89 struct rsi_91x_usbdev *dev;
90
91 if (!adapter)
92 return -ENODEV;
93
94 if (endpoint == 0)
95 return -EINVAL;
96
97 dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
98 if (dev->write_fail)
99 return -ENETDOWN;
100
101 return rsi_usb_card_write(adapter, data, count, endpoint);
102}
103
104/**
105 * rsi_find_bulk_in_and_out_endpoints() - This function initializes the bulk
106 * endpoints to the device.
107 * @interface: Pointer to the USB interface structure.
108 * @adapter: Pointer to the adapter structure.
109 *
110 * Return: ret_val: 0 on success, -ENOMEM on failure.
111 */
112static int rsi_find_bulk_in_and_out_endpoints(struct usb_interface *interface,
113 struct rsi_hw *adapter)
114{
115 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
116 struct usb_host_interface *iface_desc;
117 struct usb_endpoint_descriptor *endpoint;
118 __le16 buffer_size;
119 int ii, bin_found = 0, bout_found = 0;
120
121 iface_desc = interface->cur_altsetting;
122
123 for (ii = 0; ii < iface_desc->desc.bNumEndpoints; ++ii) {
124 endpoint = &(iface_desc->endpoint[ii].desc);
125
126 if (!dev->bulkin_endpoint_addr[bin_found] &&
127 (endpoint->bEndpointAddress & USB_DIR_IN) &&
128 ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
129 USB_ENDPOINT_XFER_BULK)) {
130 buffer_size = endpoint->wMaxPacketSize;
131 dev->bulkin_size[bin_found] = buffer_size;
132 dev->bulkin_endpoint_addr[bin_found] =
133 endpoint->bEndpointAddress;
134 bin_found++;
135 }
136
137 if (!dev->bulkout_endpoint_addr[bout_found] &&
138 !(endpoint->bEndpointAddress & USB_DIR_IN) &&
139 ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
140 USB_ENDPOINT_XFER_BULK)) {
141 buffer_size = endpoint->wMaxPacketSize;
142 dev->bulkout_endpoint_addr[bout_found] =
143 endpoint->bEndpointAddress;
144 dev->bulkout_size[bout_found] = buffer_size;
145 bout_found++;
146 }
147
148 if (bin_found >= MAX_BULK_EP || bout_found >= MAX_BULK_EP)
149 break;
150 }
151
152 if (!(dev->bulkin_endpoint_addr[0] && dev->bulkout_endpoint_addr[0])) {
153 dev_err(&interface->dev, "missing wlan bulk endpoints\n");
154 return -EINVAL;
155 }
156
157 if (adapter->priv->coex_mode > 1) {
158 if (!dev->bulkin_endpoint_addr[1]) {
159 dev_err(&interface->dev, "missing bt bulk-in endpoint\n");
160 return -EINVAL;
161 }
162 }
163
164 return 0;
165}
166
167#define RSI_USB_REQ_OUT (USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE)
168#define RSI_USB_REQ_IN (USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE)
169
170/* rsi_usb_reg_read() - This function reads data from given register address.
171 * @usbdev: Pointer to the usb_device structure.
172 * @reg: Address of the register to be read.
173 * @value: Value to be read.
174 * @len: length of data to be read.
175 *
176 * Return: status: 0 on success, a negative error code on failure.
177 */
178static int rsi_usb_reg_read(struct usb_device *usbdev,
179 u32 reg,
180 u16 *value,
181 u16 len)
182{
183 u8 *buf;
184 int status = -ENOMEM;
185
186 if (len > RSI_USB_CTRL_BUF_SIZE)
187 return -EINVAL;
188
189 buf = kmalloc(RSI_USB_CTRL_BUF_SIZE, GFP_KERNEL);
190 if (!buf)
191 return status;
192
193 status = usb_control_msg(usbdev,
194 usb_rcvctrlpipe(usbdev, 0),
195 USB_VENDOR_REGISTER_READ,
196 RSI_USB_REQ_IN,
197 ((reg & 0xffff0000) >> 16), (reg & 0xffff),
198 (void *)buf,
199 len,
200 USB_CTRL_GET_TIMEOUT);
201
202 *value = (buf[0] | (buf[1] << 8));
203 if (status < 0) {
204 rsi_dbg(ERR_ZONE,
205 "%s: Reg read failed with error code :%d\n",
206 __func__, status);
207 }
208 kfree(buf);
209
210 return status;
211}
212
213/**
214 * rsi_usb_reg_write() - This function writes the given data into the given
215 * register address.
216 * @usbdev: Pointer to the usb_device structure.
217 * @reg: Address of the register.
218 * @value: Value to write.
219 * @len: Length of data to be written.
220 *
221 * Return: status: 0 on success, a negative error code on failure.
222 */
223static int rsi_usb_reg_write(struct usb_device *usbdev,
224 u32 reg,
225 u32 value,
226 u16 len)
227{
228 u8 *usb_reg_buf;
229 int status = -ENOMEM;
230
231 if (len > RSI_USB_CTRL_BUF_SIZE)
232 return -EINVAL;
233
234 usb_reg_buf = kmalloc(RSI_USB_CTRL_BUF_SIZE, GFP_KERNEL);
235 if (!usb_reg_buf)
236 return status;
237
238 usb_reg_buf[0] = (cpu_to_le32(value) & 0x00ff);
239 usb_reg_buf[1] = (cpu_to_le32(value) & 0xff00) >> 8;
240 usb_reg_buf[2] = (cpu_to_le32(value) & 0x00ff0000) >> 16;
241 usb_reg_buf[3] = (cpu_to_le32(value) & 0xff000000) >> 24;
242
243 status = usb_control_msg(usbdev,
244 usb_sndctrlpipe(usbdev, 0),
245 USB_VENDOR_REGISTER_WRITE,
246 RSI_USB_REQ_OUT,
247 ((cpu_to_le32(reg) & 0xffff0000) >> 16),
248 (cpu_to_le32(reg) & 0xffff),
249 (void *)usb_reg_buf,
250 len,
251 USB_CTRL_SET_TIMEOUT);
252 if (status < 0) {
253 rsi_dbg(ERR_ZONE,
254 "%s: Reg write failed with error code :%d\n",
255 __func__, status);
256 }
257 kfree(usb_reg_buf);
258
259 return status;
260}
261
262/**
263 * rsi_rx_done_handler() - This function is called when a packet is received
264 * from USB stack. This is callback to receive done.
265 * @urb: Received URB.
266 *
267 * Return: None.
268 */
269static void rsi_rx_done_handler(struct urb *urb)
270{
271 struct rx_usb_ctrl_block *rx_cb = urb->context;
272 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)rx_cb->data;
273 int status = -EINVAL;
274
275 if (urb->status) {
276 dev_kfree_skb(rx_cb->rx_skb);
277 return;
278 }
279
280 if (urb->actual_length <= 0 ||
281 urb->actual_length > rx_cb->rx_skb->len) {
282 rsi_dbg(INFO_ZONE, "%s: Invalid packet length = %d\n",
283 __func__, urb->actual_length);
284 goto out;
285 }
286 if (skb_queue_len(&dev->rx_q) >= RSI_MAX_RX_PKTS) {
287 rsi_dbg(INFO_ZONE, "Max RX packets reached\n");
288 goto out;
289 }
290 skb_trim(rx_cb->rx_skb, urb->actual_length);
291 skb_queue_tail(&dev->rx_q, rx_cb->rx_skb);
292
293 rsi_set_event(&dev->rx_thread.event);
294 status = 0;
295
296out:
297 if (rsi_rx_urb_submit(dev->priv, rx_cb->ep_num, GFP_ATOMIC))
298 rsi_dbg(ERR_ZONE, "%s: Failed in urb submission", __func__);
299
300 if (status)
301 dev_kfree_skb(rx_cb->rx_skb);
302}
303
304static void rsi_rx_urb_kill(struct rsi_hw *adapter, u8 ep_num)
305{
306 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
307 struct rx_usb_ctrl_block *rx_cb = &dev->rx_cb[ep_num - 1];
308 struct urb *urb = rx_cb->rx_urb;
309
310 usb_kill_urb(urb);
311}
312
313/**
314 * rsi_rx_urb_submit() - This function submits the given URB to the USB stack.
315 * @adapter: Pointer to the adapter structure.
316 *
317 * Return: 0 on success, a negative error code on failure.
318 */
319static int rsi_rx_urb_submit(struct rsi_hw *adapter, u8 ep_num, gfp_t mem_flags)
320{
321 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
322 struct rx_usb_ctrl_block *rx_cb = &dev->rx_cb[ep_num - 1];
323 struct urb *urb = rx_cb->rx_urb;
324 int status;
325 struct sk_buff *skb;
326 u8 dword_align_bytes = 0;
327
328#define RSI_MAX_RX_USB_PKT_SIZE 3000
329 skb = dev_alloc_skb(RSI_MAX_RX_USB_PKT_SIZE);
330 if (!skb)
331 return -ENOMEM;
332 skb_reserve(skb, MAX_DWORD_ALIGN_BYTES);
333 skb_put(skb, RSI_MAX_RX_USB_PKT_SIZE - MAX_DWORD_ALIGN_BYTES);
334 dword_align_bytes = (unsigned long)skb->data & 0x3f;
335 if (dword_align_bytes > 0)
336 skb_push(skb, dword_align_bytes);
337 urb->transfer_buffer = skb->data;
338 rx_cb->rx_skb = skb;
339
340 usb_fill_bulk_urb(urb,
341 dev->usbdev,
342 usb_rcvbulkpipe(dev->usbdev,
343 dev->bulkin_endpoint_addr[ep_num - 1]),
344 urb->transfer_buffer,
345 skb->len,
346 rsi_rx_done_handler,
347 rx_cb);
348
349 status = usb_submit_urb(urb, mem_flags);
350 if (status) {
351 rsi_dbg(ERR_ZONE, "%s: Failed in urb submission\n", __func__);
352 dev_kfree_skb(skb);
353 }
354
355 return status;
356}
357
358static int rsi_usb_read_register_multiple(struct rsi_hw *adapter, u32 addr,
359 u8 *data, u16 count)
360{
361 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
362 u8 *buf;
363 u16 transfer;
364 int status;
365
366 if (!addr)
367 return -EINVAL;
368
369 buf = kzalloc(RSI_USB_BUF_SIZE, GFP_KERNEL);
370 if (!buf)
371 return -ENOMEM;
372
373 while (count) {
374 transfer = min_t(u16, count, RSI_USB_BUF_SIZE);
375 status = usb_control_msg(dev->usbdev,
376 usb_rcvctrlpipe(dev->usbdev, 0),
377 USB_VENDOR_REGISTER_READ,
378 RSI_USB_REQ_IN,
379 ((addr & 0xffff0000) >> 16),
380 (addr & 0xffff), (void *)buf,
381 transfer, USB_CTRL_GET_TIMEOUT);
382 if (status < 0) {
383 rsi_dbg(ERR_ZONE,
384 "Reg read failed with error code :%d\n",
385 status);
386 kfree(buf);
387 return status;
388 }
389 memcpy(data, buf, transfer);
390 count -= transfer;
391 data += transfer;
392 addr += transfer;
393 }
394 kfree(buf);
395 return 0;
396}
397
398/**
399 * rsi_usb_write_register_multiple() - This function writes multiple bytes of
400 * information to multiple registers.
401 * @adapter: Pointer to the adapter structure.
402 * @addr: Address of the register.
403 * @data: Pointer to the data that has to be written.
404 * @count: Number of multiple bytes to be written on to the registers.
405 *
406 * Return: status: 0 on success, a negative error code on failure.
407 */
408static int rsi_usb_write_register_multiple(struct rsi_hw *adapter, u32 addr,
409 u8 *data, u16 count)
410{
411 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
412 u8 *buf;
413 u16 transfer;
414 int status = 0;
415
416 buf = kzalloc(RSI_USB_BUF_SIZE, GFP_KERNEL);
417 if (!buf)
418 return -ENOMEM;
419
420 while (count) {
421 transfer = min_t(u16, count, RSI_USB_BUF_SIZE);
422 memcpy(buf, data, transfer);
423 status = usb_control_msg(dev->usbdev,
424 usb_sndctrlpipe(dev->usbdev, 0),
425 USB_VENDOR_REGISTER_WRITE,
426 RSI_USB_REQ_OUT,
427 ((addr & 0xffff0000) >> 16),
428 (addr & 0xffff),
429 (void *)buf,
430 transfer,
431 USB_CTRL_SET_TIMEOUT);
432 if (status < 0) {
433 rsi_dbg(ERR_ZONE,
434 "Reg write failed with error code :%d\n",
435 status);
436 kfree(buf);
437 return status;
438 }
439 count -= transfer;
440 data += transfer;
441 addr += transfer;
442 }
443
444 kfree(buf);
445 return 0;
446}
447
448/**
449 *rsi_usb_host_intf_write_pkt() - This function writes the packet to the
450 * USB card.
451 * @adapter: Pointer to the adapter structure.
452 * @pkt: Pointer to the data to be written on to the card.
453 * @len: Length of the data to be written on to the card.
454 *
455 * Return: 0 on success, a negative error code on failure.
456 */
457static int rsi_usb_host_intf_write_pkt(struct rsi_hw *adapter,
458 u8 *pkt,
459 u32 len)
460{
461 u32 queueno = ((pkt[1] >> 4) & 0x7);
462 u8 endpoint;
463
464 endpoint = ((queueno == RSI_WIFI_MGMT_Q || queueno == RSI_WIFI_DATA_Q ||
465 queueno == RSI_COEX_Q) ? WLAN_EP : BT_EP);
466
467 return rsi_write_multiple(adapter,
468 endpoint,
469 (u8 *)pkt,
470 len);
471}
472
473static int rsi_usb_master_reg_read(struct rsi_hw *adapter, u32 reg,
474 u32 *value, u16 len)
475{
476 struct usb_device *usbdev =
477 ((struct rsi_91x_usbdev *)adapter->rsi_dev)->usbdev;
478 u16 temp;
479 int ret;
480
481 ret = rsi_usb_reg_read(usbdev, reg, &temp, len);
482 if (ret < 0)
483 return ret;
484 *value = temp;
485
486 return 0;
487}
488
489static int rsi_usb_master_reg_write(struct rsi_hw *adapter,
490 unsigned long reg,
491 unsigned long value, u16 len)
492{
493 struct usb_device *usbdev =
494 ((struct rsi_91x_usbdev *)adapter->rsi_dev)->usbdev;
495
496 return rsi_usb_reg_write(usbdev, reg, value, len);
497}
498
499static int rsi_usb_load_data_master_write(struct rsi_hw *adapter,
500 u32 base_address,
501 u32 instructions_sz, u16 block_size,
502 u8 *ta_firmware)
503{
504 u16 num_blocks;
505 u32 cur_indx, i;
506 u8 temp_buf[256];
507 int status;
508
509 num_blocks = instructions_sz / block_size;
510 rsi_dbg(INFO_ZONE, "num_blocks: %d\n", num_blocks);
511
512 for (cur_indx = 0, i = 0; i < num_blocks; i++, cur_indx += block_size) {
513 memcpy(temp_buf, ta_firmware + cur_indx, block_size);
514 status = rsi_usb_write_register_multiple(adapter, base_address,
515 (u8 *)(temp_buf),
516 block_size);
517 if (status < 0)
518 return status;
519
520 rsi_dbg(INFO_ZONE, "%s: loading block: %d\n", __func__, i);
521 base_address += block_size;
522 }
523
524 if (instructions_sz % block_size) {
525 memset(temp_buf, 0, block_size);
526 memcpy(temp_buf, ta_firmware + cur_indx,
527 instructions_sz % block_size);
528 status = rsi_usb_write_register_multiple
529 (adapter, base_address,
530 (u8 *)temp_buf,
531 instructions_sz % block_size);
532 if (status < 0)
533 return status;
534 rsi_dbg(INFO_ZONE,
535 "Written Last Block in Address 0x%x Successfully\n",
536 cur_indx);
537 }
538 return 0;
539}
540
541static struct rsi_host_intf_ops usb_host_intf_ops = {
542 .write_pkt = rsi_usb_host_intf_write_pkt,
543 .read_reg_multiple = rsi_usb_read_register_multiple,
544 .write_reg_multiple = rsi_usb_write_register_multiple,
545 .master_reg_read = rsi_usb_master_reg_read,
546 .master_reg_write = rsi_usb_master_reg_write,
547 .load_data_master_write = rsi_usb_load_data_master_write,
548};
549
550/**
551 * rsi_deinit_usb_interface() - This function deinitializes the usb interface.
552 * @adapter: Pointer to the adapter structure.
553 *
554 * Return: None.
555 */
556static void rsi_deinit_usb_interface(struct rsi_hw *adapter)
557{
558 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
559
560 rsi_kill_thread(&dev->rx_thread);
561
562 usb_free_urb(dev->rx_cb[0].rx_urb);
563 if (adapter->priv->coex_mode > 1)
564 usb_free_urb(dev->rx_cb[1].rx_urb);
565
566 kfree(dev->tx_buffer);
567}
568
569static int rsi_usb_init_rx(struct rsi_hw *adapter)
570{
571 struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
572 struct rx_usb_ctrl_block *rx_cb;
573 u8 idx, num_rx_cb;
574
575 num_rx_cb = (adapter->priv->coex_mode > 1 ? 2 : 1);
576
577 for (idx = 0; idx < num_rx_cb; idx++) {
578 rx_cb = &dev->rx_cb[idx];
579
580 rx_cb->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
581 if (!rx_cb->rx_urb) {
582 rsi_dbg(ERR_ZONE, "Failed alloc rx urb[%d]\n", idx);
583 goto err;
584 }
585 rx_cb->ep_num = idx + 1;
586 rx_cb->data = (void *)dev;
587 }
588 skb_queue_head_init(&dev->rx_q);
589 rsi_init_event(&dev->rx_thread.event);
590 if (rsi_create_kthread(adapter->priv, &dev->rx_thread,
591 rsi_usb_rx_thread, "RX-Thread")) {
592 rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__);
593 goto err;
594 }
595
596 return 0;
597
598err:
599 usb_free_urb(dev->rx_cb[0].rx_urb);
600 if (adapter->priv->coex_mode > 1)
601 usb_free_urb(dev->rx_cb[1].rx_urb);
602
603 return -1;
604}
605
606/**
607 * rsi_init_usb_interface() - This function initializes the usb interface.
608 * @adapter: Pointer to the adapter structure.
609 * @pfunction: Pointer to USB interface structure.
610 *
611 * Return: 0 on success, a negative error code on failure.
612 */
613static int rsi_init_usb_interface(struct rsi_hw *adapter,
614 struct usb_interface *pfunction)
615{
616 struct rsi_91x_usbdev *rsi_dev;
617 int status;
618
619 rsi_dev = kzalloc(sizeof(*rsi_dev), GFP_KERNEL);
620 if (!rsi_dev)
621 return -ENOMEM;
622
623 adapter->rsi_dev = rsi_dev;
624 rsi_dev->usbdev = interface_to_usbdev(pfunction);
625 rsi_dev->priv = (void *)adapter;
626
627 if (rsi_find_bulk_in_and_out_endpoints(pfunction, adapter)) {
628 status = -EINVAL;
629 goto fail_eps;
630 }
631
632 adapter->device = &pfunction->dev;
633 usb_set_intfdata(pfunction, adapter);
634
635 rsi_dev->tx_buffer = kmalloc(2048, GFP_KERNEL);
636 if (!rsi_dev->tx_buffer) {
637 status = -ENOMEM;
638 goto fail_eps;
639 }
640
641 if (rsi_usb_init_rx(adapter)) {
642 rsi_dbg(ERR_ZONE, "Failed to init RX handle\n");
643 status = -ENOMEM;
644 goto fail_rx;
645 }
646
647 rsi_dev->tx_blk_size = 252;
648 adapter->block_size = rsi_dev->tx_blk_size;
649
650 /* Initializing function callbacks */
651 adapter->check_hw_queue_status = rsi_usb_check_queue_status;
652 adapter->determine_event_timeout = rsi_usb_event_timeout;
653 adapter->rsi_host_intf = RSI_HOST_INTF_USB;
654 adapter->host_intf_ops = &usb_host_intf_ops;
655
656#ifdef CONFIG_RSI_DEBUGFS
657 /* In USB, one less than the MAX_DEBUGFS_ENTRIES entries is required */
658 adapter->num_debugfs_entries = (MAX_DEBUGFS_ENTRIES - 1);
659#endif
660
661 rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__);
662 return 0;
663
664fail_rx:
665 kfree(rsi_dev->tx_buffer);
666
667fail_eps:
668
669 return status;
670}
671
672static int usb_ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data,
673 u16 len_in_bits)
674{
675 int ret;
676
677 ret = rsi_usb_master_reg_write
678 (adapter, RSI_GSPI_DATA_REG1,
679 ((addr << 6) | ((data >> 16) & 0xffff)), 2);
680 if (ret < 0)
681 return ret;
682
683 ret = rsi_usb_master_reg_write(adapter, RSI_GSPI_DATA_REG0,
684 (data & 0xffff), 2);
685 if (ret < 0)
686 return ret;
687
688 /* Initializing GSPI for ULP read/writes */
689 rsi_usb_master_reg_write(adapter, RSI_GSPI_CTRL_REG0,
690 RSI_GSPI_CTRL_REG0_VALUE, 2);
691
692 ret = rsi_usb_master_reg_write(adapter, RSI_GSPI_CTRL_REG1,
693 ((len_in_bits - 1) | RSI_GSPI_TRIG), 2);
694 if (ret < 0)
695 return ret;
696
697 msleep(20);
698
699 return 0;
700}
701
702static int rsi_reset_card(struct rsi_hw *adapter)
703{
704 int ret;
705
706 rsi_dbg(INFO_ZONE, "Resetting Card...\n");
707 rsi_usb_master_reg_write(adapter, RSI_TA_HOLD_REG, 0xE, 4);
708
709 /* This msleep will ensure Thread-Arch processor to go to hold
710 * and any pending dma transfers to rf in device to finish.
711 */
712 msleep(100);
713
714 ret = rsi_usb_master_reg_write(adapter, SWBL_REGOUT,
715 RSI_FW_WDT_DISABLE_REQ,
716 RSI_COMMON_REG_SIZE);
717 if (ret < 0) {
718 rsi_dbg(ERR_ZONE, "Disabling firmware watchdog timer failed\n");
719 goto fail;
720 }
721
722 if (adapter->device_model != RSI_DEV_9116) {
723 ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_1,
724 RSI_ULP_WRITE_2, 32);
725 if (ret < 0)
726 goto fail;
727 ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_2,
728 RSI_ULP_WRITE_0, 32);
729 if (ret < 0)
730 goto fail;
731 ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_1,
732 RSI_ULP_WRITE_50, 32);
733 if (ret < 0)
734 goto fail;
735 ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_2,
736 RSI_ULP_WRITE_0, 32);
737 if (ret < 0)
738 goto fail;
739 ret = usb_ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_ENABLE,
740 RSI_ULP_TIMER_ENABLE, 32);
741 if (ret < 0)
742 goto fail;
743 } else {
744 if ((rsi_usb_master_reg_write(adapter,
745 NWP_WWD_INTERRUPT_TIMER,
746 NWP_WWD_INT_TIMER_CLKS,
747 RSI_9116_REG_SIZE)) < 0) {
748 goto fail;
749 }
750 if ((rsi_usb_master_reg_write(adapter,
751 NWP_WWD_SYSTEM_RESET_TIMER,
752 NWP_WWD_SYS_RESET_TIMER_CLKS,
753 RSI_9116_REG_SIZE)) < 0) {
754 goto fail;
755 }
756 if ((rsi_usb_master_reg_write(adapter,
757 NWP_WWD_MODE_AND_RSTART,
758 NWP_WWD_TIMER_DISABLE,
759 RSI_9116_REG_SIZE)) < 0) {
760 goto fail;
761 }
762 }
763
764 rsi_dbg(INFO_ZONE, "Reset card done\n");
765 return ret;
766
767fail:
768 rsi_dbg(ERR_ZONE, "Reset card failed\n");
769 return ret;
770}
771
772/**
773 * rsi_probe() - This function is called by kernel when the driver provided
774 * Vendor and device IDs are matched. All the initialization
775 * work is done here.
776 * @pfunction: Pointer to the USB interface structure.
777 * @id: Pointer to the usb_device_id structure.
778 *
779 * Return: 0 on success, a negative error code on failure.
780 */
781static int rsi_probe(struct usb_interface *pfunction,
782 const struct usb_device_id *id)
783{
784 struct rsi_hw *adapter;
785 struct rsi_91x_usbdev *dev;
786 u16 fw_status;
787 int status;
788
789 rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__);
790
791 adapter = rsi_91x_init(dev_oper_mode);
792 if (!adapter) {
793 rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n",
794 __func__);
795 return -ENOMEM;
796 }
797 adapter->rsi_host_intf = RSI_HOST_INTF_USB;
798
799 status = rsi_init_usb_interface(adapter, pfunction);
800 if (status) {
801 rsi_dbg(ERR_ZONE, "%s: Failed to init usb interface\n",
802 __func__);
803 goto err;
804 }
805
806 rsi_dbg(ERR_ZONE, "%s: Initialized os intf ops\n", __func__);
807
808 if (id->idProduct == RSI_USB_PID_9113) {
809 rsi_dbg(INIT_ZONE, "%s: 9113 module detected\n", __func__);
810 adapter->device_model = RSI_DEV_9113;
811 } else if (id->idProduct == RSI_USB_PID_9116) {
812 rsi_dbg(INIT_ZONE, "%s: 9116 module detected\n", __func__);
813 adapter->device_model = RSI_DEV_9116;
814 } else {
815 rsi_dbg(ERR_ZONE, "%s: Unsupported RSI device id 0x%x\n",
816 __func__, id->idProduct);
817 goto err1;
818 }
819
820 dev = (struct rsi_91x_usbdev *)adapter->rsi_dev;
821
822 status = rsi_usb_reg_read(dev->usbdev, FW_STATUS_REG, &fw_status, 2);
823 if (status < 0)
824 goto err1;
825 else
826 fw_status &= 1;
827
828 if (!fw_status) {
829 rsi_dbg(INIT_ZONE, "Loading firmware...\n");
830 status = rsi_hal_device_init(adapter);
831 if (status) {
832 rsi_dbg(ERR_ZONE, "%s: Failed in device init\n",
833 __func__);
834 goto err1;
835 }
836 rsi_dbg(INIT_ZONE, "%s: Device Init Done\n", __func__);
837 }
838
839 status = rsi_rx_urb_submit(adapter, WLAN_EP, GFP_KERNEL);
840 if (status)
841 goto err1;
842
843 if (adapter->priv->coex_mode > 1) {
844 status = rsi_rx_urb_submit(adapter, BT_EP, GFP_KERNEL);
845 if (status)
846 goto err_kill_wlan_urb;
847 }
848
849 return 0;
850
851err_kill_wlan_urb:
852 rsi_rx_urb_kill(adapter, WLAN_EP);
853err1:
854 rsi_deinit_usb_interface(adapter);
855err:
856 rsi_91x_deinit(adapter);
857 rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__);
858 return status;
859}
860
861/**
862 * rsi_disconnect() - This function performs the reverse of the probe function,
863 * it deinitialize the driver structure.
864 * @pfunction: Pointer to the USB interface structure.
865 *
866 * Return: None.
867 */
868static void rsi_disconnect(struct usb_interface *pfunction)
869{
870 struct rsi_hw *adapter = usb_get_intfdata(pfunction);
871
872 if (!adapter)
873 return;
874
875 rsi_mac80211_detach(adapter);
876
877 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
878 adapter->priv->bt_adapter) {
879 rsi_bt_ops.detach(adapter->priv->bt_adapter);
880 adapter->priv->bt_adapter = NULL;
881 }
882
883 if (adapter->priv->coex_mode > 1)
884 rsi_rx_urb_kill(adapter, BT_EP);
885 rsi_rx_urb_kill(adapter, WLAN_EP);
886
887 rsi_reset_card(adapter);
888 rsi_deinit_usb_interface(adapter);
889 rsi_91x_deinit(adapter);
890
891 rsi_dbg(INFO_ZONE, "%s: Deinitialization completed\n", __func__);
892}
893
894#ifdef CONFIG_PM
895static int rsi_suspend(struct usb_interface *intf, pm_message_t message)
896{
897 /* Not yet implemented */
898 return -ENOSYS;
899}
900
901static int rsi_resume(struct usb_interface *intf)
902{
903 /* Not yet implemented */
904 return -ENOSYS;
905}
906#endif
907
908static const struct usb_device_id rsi_dev_table[] = {
909 { USB_DEVICE(RSI_USB_VENDOR_ID, RSI_USB_PID_9113) },
910 { USB_DEVICE(RSI_USB_VENDOR_ID, RSI_USB_PID_9116) },
911 { /* Blank */},
912};
913
914static struct usb_driver rsi_driver = {
915 .name = "RSI-USB WLAN",
916 .probe = rsi_probe,
917 .disconnect = rsi_disconnect,
918 .id_table = rsi_dev_table,
919#ifdef CONFIG_PM
920 .suspend = rsi_suspend,
921 .resume = rsi_resume,
922#endif
923};
924
925module_usb_driver(rsi_driver);
926
927MODULE_AUTHOR("Redpine Signals Inc");
928MODULE_DESCRIPTION("Common USB layer for RSI drivers");
929MODULE_SUPPORTED_DEVICE("RSI-91x");
930MODULE_DEVICE_TABLE(usb, rsi_dev_table);
931MODULE_FIRMWARE(FIRMWARE_RSI9113);
932MODULE_VERSION("0.1");
933MODULE_LICENSE("Dual BSD/GPL");