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drivers: power: report battery voltage in AOSP compatible format
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / p54 / p54usb.c
1
2 /*
3 * Linux device driver for USB based Prism54
4 *
5 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
6 *
7 * Based on the islsm (softmac prism54) driver, which is:
8 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/init.h>
16 #include <linux/usb.h>
17 #include <linux/pci.h>
18 #include <linux/slab.h>
19 #include <linux/firmware.h>
20 #include <linux/etherdevice.h>
21 #include <linux/delay.h>
22 #include <linux/crc32.h>
23 #include <linux/module.h>
24 #include <net/mac80211.h>
25
26 #include "p54.h"
27 #include "lmac.h"
28 #include "p54usb.h"
29
30 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
31 MODULE_DESCRIPTION("Prism54 USB wireless driver");
32 MODULE_LICENSE("GPL");
33 MODULE_ALIAS("prism54usb");
34 MODULE_FIRMWARE("isl3886usb");
35 MODULE_FIRMWARE("isl3887usb");
36
37 /*
38 * Note:
39 *
40 * Always update our wiki's device list (located at:
41 * http://wireless.kernel.org/en/users/Drivers/p54/devices ),
42 * whenever you add a new device.
43 */
44
45 static struct usb_device_id p54u_table[] = {
46 /* Version 1 devices (pci chip + net2280) */
47 {USB_DEVICE(0x0411, 0x0050)}, /* Buffalo WLI2-USB2-G54 */
48 {USB_DEVICE(0x045e, 0x00c2)}, /* Microsoft MN-710 */
49 {USB_DEVICE(0x0506, 0x0a11)}, /* 3COM 3CRWE254G72 */
50 {USB_DEVICE(0x0675, 0x0530)}, /* DrayTek Vigor 530 */
51 {USB_DEVICE(0x06b9, 0x0120)}, /* Thomson SpeedTouch 120g */
52 {USB_DEVICE(0x0707, 0xee06)}, /* SMC 2862W-G */
53 {USB_DEVICE(0x07aa, 0x001c)}, /* Corega CG-WLUSB2GT */
54 {USB_DEVICE(0x083a, 0x4501)}, /* Accton 802.11g WN4501 USB */
55 {USB_DEVICE(0x083a, 0x4502)}, /* Siemens Gigaset USB Adapter */
56 {USB_DEVICE(0x083a, 0x5501)}, /* Phillips CPWUA054 */
57 {USB_DEVICE(0x0846, 0x4200)}, /* Netgear WG121 */
58 {USB_DEVICE(0x0846, 0x4210)}, /* Netgear WG121 the second ? */
59 {USB_DEVICE(0x0846, 0x4220)}, /* Netgear WG111 */
60 {USB_DEVICE(0x09aa, 0x1000)}, /* Spinnaker Proto board */
61 {USB_DEVICE(0x0bf8, 0x1007)}, /* Fujitsu E-5400 USB */
62 {USB_DEVICE(0x0cde, 0x0006)}, /* Medion 40900, Roper Europe */
63 {USB_DEVICE(0x0db0, 0x6826)}, /* MSI UB54G (MS-6826) */
64 {USB_DEVICE(0x107b, 0x55f2)}, /* Gateway WGU-210 (Gemtek) */
65 {USB_DEVICE(0x124a, 0x4023)}, /* Shuttle PN15, Airvast WM168g, IOGear GWU513 */
66 {USB_DEVICE(0x1435, 0x0210)}, /* Inventel UR054G */
67 {USB_DEVICE(0x15a9, 0x0002)}, /* Gemtek WUBI-100GW 802.11g */
68 {USB_DEVICE(0x1630, 0x0005)}, /* 2Wire 802.11g USB (v1) / Z-Com */
69 {USB_DEVICE(0x182d, 0x096b)}, /* Sitecom WL-107 */
70 {USB_DEVICE(0x1915, 0x2234)}, /* Linksys WUSB54G OEM */
71 {USB_DEVICE(0x1915, 0x2235)}, /* Linksys WUSB54G Portable OEM */
72 {USB_DEVICE(0x2001, 0x3701)}, /* DLink DWL-G120 Spinnaker */
73 {USB_DEVICE(0x2001, 0x3703)}, /* DLink DWL-G122 */
74 {USB_DEVICE(0x2001, 0x3762)}, /* Conceptronic C54U */
75 {USB_DEVICE(0x5041, 0x2234)}, /* Linksys WUSB54G */
76 {USB_DEVICE(0x5041, 0x2235)}, /* Linksys WUSB54G Portable */
77
78 /* Version 2 devices (3887) */
79 {USB_DEVICE(0x0471, 0x1230)}, /* Philips CPWUA054/00 */
80 {USB_DEVICE(0x050d, 0x7050)}, /* Belkin F5D7050 ver 1000 */
81 {USB_DEVICE(0x0572, 0x2000)}, /* Cohiba Proto board */
82 {USB_DEVICE(0x0572, 0x2002)}, /* Cohiba Proto board */
83 {USB_DEVICE(0x06a9, 0x000e)}, /* Westell 802.11g USB (A90-211WG-01) */
84 {USB_DEVICE(0x06b9, 0x0121)}, /* Thomson SpeedTouch 121g */
85 {USB_DEVICE(0x0707, 0xee13)}, /* SMC 2862W-G version 2 */
86 {USB_DEVICE(0x07aa, 0x0020)}, /* Corega WLUSB2GTST USB */
87 {USB_DEVICE(0x0803, 0x4310)}, /* Zoom 4410a */
88 {USB_DEVICE(0x083a, 0x4521)}, /* Siemens Gigaset USB Adapter 54 version 2 */
89 {USB_DEVICE(0x083a, 0x4531)}, /* T-Com Sinus 154 data II */
90 {USB_DEVICE(0x083a, 0xc501)}, /* Zoom Wireless-G 4410 */
91 {USB_DEVICE(0x083a, 0xf503)}, /* Accton FD7050E ver 1010ec */
92 {USB_DEVICE(0x0846, 0x4240)}, /* Netgear WG111 (v2) */
93 {USB_DEVICE(0x0915, 0x2000)}, /* Cohiba Proto board */
94 {USB_DEVICE(0x0915, 0x2002)}, /* Cohiba Proto board */
95 {USB_DEVICE(0x0baf, 0x0118)}, /* U.S. Robotics U5 802.11g Adapter*/
96 {USB_DEVICE(0x0bf8, 0x1009)}, /* FUJITSU E-5400 USB D1700*/
97 /* {USB_DEVICE(0x0cde, 0x0006)}, * Medion MD40900 already listed above,
98 * just noting it here for clarity */
99 {USB_DEVICE(0x0cde, 0x0008)}, /* Sagem XG703A */
100 {USB_DEVICE(0x0cde, 0x0015)}, /* Zcomax XG-705A */
101 {USB_DEVICE(0x0d8e, 0x3762)}, /* DLink DWL-G120 Cohiba */
102 {USB_DEVICE(0x124a, 0x4025)}, /* IOGear GWU513 (GW3887IK chip) */
103 {USB_DEVICE(0x1260, 0xee22)}, /* SMC 2862W-G version 2 */
104 {USB_DEVICE(0x13b1, 0x000a)}, /* Linksys WUSB54G ver 2 */
105 {USB_DEVICE(0x13B1, 0x000C)}, /* Linksys WUSB54AG */
106 {USB_DEVICE(0x1413, 0x5400)}, /* Telsey 802.11g USB2.0 Adapter */
107 {USB_DEVICE(0x1435, 0x0427)}, /* Inventel UR054G */
108 /* {USB_DEVICE(0x15a9, 0x0002)}, * Also SparkLAN WL-682 with 3887 */
109 {USB_DEVICE(0x1668, 0x1050)}, /* Actiontec 802UIG-1 */
110 {USB_DEVICE(0x1740, 0x1000)}, /* Senao NUB-350 */
111 {USB_DEVICE(0x2001, 0x3704)}, /* DLink DWL-G122 rev A2 */
112 {USB_DEVICE(0x2001, 0x3705)}, /* D-Link DWL-G120 rev C1 */
113 {USB_DEVICE(0x413c, 0x5513)}, /* Dell WLA3310 USB Wireless Adapter */
114 {USB_DEVICE(0x413c, 0x8102)}, /* Spinnaker DUT */
115 {USB_DEVICE(0x413c, 0x8104)}, /* Cohiba Proto board */
116 {}
117 };
118
119 MODULE_DEVICE_TABLE(usb, p54u_table);
120
121 static const struct {
122 u32 intf;
123 enum p54u_hw_type type;
124 const char *fw;
125 char hw[20];
126 } p54u_fwlist[__NUM_P54U_HWTYPES] = {
127 {
128 .type = P54U_NET2280,
129 .intf = FW_LM86,
130 .fw = "isl3886usb",
131 .hw = "ISL3886 + net2280",
132 },
133 {
134 .type = P54U_3887,
135 .intf = FW_LM87,
136 .fw = "isl3887usb",
137 .hw = "ISL3887",
138 },
139 };
140
141 static void p54u_rx_cb(struct urb *urb)
142 {
143 struct sk_buff *skb = (struct sk_buff *) urb->context;
144 struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
145 struct ieee80211_hw *dev = info->dev;
146 struct p54u_priv *priv = dev->priv;
147
148 skb_unlink(skb, &priv->rx_queue);
149
150 if (unlikely(urb->status)) {
151 dev_kfree_skb_irq(skb);
152 return;
153 }
154
155 skb_put(skb, urb->actual_length);
156
157 if (priv->hw_type == P54U_NET2280)
158 skb_pull(skb, priv->common.tx_hdr_len);
159 if (priv->common.fw_interface == FW_LM87) {
160 skb_pull(skb, 4);
161 skb_put(skb, 4);
162 }
163
164 if (p54_rx(dev, skb)) {
165 skb = dev_alloc_skb(priv->common.rx_mtu + 32);
166 if (unlikely(!skb)) {
167 /* TODO check rx queue length and refill *somewhere* */
168 return;
169 }
170
171 info = (struct p54u_rx_info *) skb->cb;
172 info->urb = urb;
173 info->dev = dev;
174 urb->transfer_buffer = skb_tail_pointer(skb);
175 urb->context = skb;
176 } else {
177 if (priv->hw_type == P54U_NET2280)
178 skb_push(skb, priv->common.tx_hdr_len);
179 if (priv->common.fw_interface == FW_LM87) {
180 skb_push(skb, 4);
181 skb_put(skb, 4);
182 }
183 skb_reset_tail_pointer(skb);
184 skb_trim(skb, 0);
185 urb->transfer_buffer = skb_tail_pointer(skb);
186 }
187 skb_queue_tail(&priv->rx_queue, skb);
188 usb_anchor_urb(urb, &priv->submitted);
189 if (usb_submit_urb(urb, GFP_ATOMIC)) {
190 skb_unlink(skb, &priv->rx_queue);
191 usb_unanchor_urb(urb);
192 dev_kfree_skb_irq(skb);
193 }
194 }
195
196 static void p54u_tx_cb(struct urb *urb)
197 {
198 struct sk_buff *skb = urb->context;
199 struct ieee80211_hw *dev =
200 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
201
202 p54_free_skb(dev, skb);
203 }
204
205 static void p54u_tx_dummy_cb(struct urb *urb) { }
206
207 static void p54u_free_urbs(struct ieee80211_hw *dev)
208 {
209 struct p54u_priv *priv = dev->priv;
210 usb_kill_anchored_urbs(&priv->submitted);
211 }
212
213 static void p54u_stop(struct ieee80211_hw *dev)
214 {
215 /*
216 * TODO: figure out how to reliably stop the 3887 and net2280 so
217 * the hardware is still usable next time we want to start it.
218 * until then, we just stop listening to the hardware..
219 */
220 p54u_free_urbs(dev);
221 }
222
223 static int p54u_init_urbs(struct ieee80211_hw *dev)
224 {
225 struct p54u_priv *priv = dev->priv;
226 struct urb *entry = NULL;
227 struct sk_buff *skb;
228 struct p54u_rx_info *info;
229 int ret = 0;
230
231 while (skb_queue_len(&priv->rx_queue) < 32) {
232 skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
233 if (!skb) {
234 ret = -ENOMEM;
235 goto err;
236 }
237 entry = usb_alloc_urb(0, GFP_KERNEL);
238 if (!entry) {
239 ret = -ENOMEM;
240 goto err;
241 }
242
243 usb_fill_bulk_urb(entry, priv->udev,
244 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
245 skb_tail_pointer(skb),
246 priv->common.rx_mtu + 32, p54u_rx_cb, skb);
247 info = (struct p54u_rx_info *) skb->cb;
248 info->urb = entry;
249 info->dev = dev;
250 skb_queue_tail(&priv->rx_queue, skb);
251
252 usb_anchor_urb(entry, &priv->submitted);
253 ret = usb_submit_urb(entry, GFP_KERNEL);
254 if (ret) {
255 skb_unlink(skb, &priv->rx_queue);
256 usb_unanchor_urb(entry);
257 goto err;
258 }
259 usb_free_urb(entry);
260 entry = NULL;
261 }
262
263 return 0;
264
265 err:
266 usb_free_urb(entry);
267 kfree_skb(skb);
268 p54u_free_urbs(dev);
269 return ret;
270 }
271
272 static int p54u_open(struct ieee80211_hw *dev)
273 {
274 /*
275 * TODO: Because we don't know how to reliably stop the 3887 and
276 * the isl3886+net2280, other than brutally cut off all
277 * communications. We have to reinitialize the urbs on every start.
278 */
279 return p54u_init_urbs(dev);
280 }
281
282 static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
283 {
284 u32 chk = 0;
285
286 length >>= 2;
287 while (length--) {
288 chk ^= le32_to_cpu(*data++);
289 chk = (chk >> 5) ^ (chk << 3);
290 }
291
292 return cpu_to_le32(chk);
293 }
294
295 static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
296 {
297 struct p54u_priv *priv = dev->priv;
298 struct urb *data_urb;
299 struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
300
301 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
302 if (!data_urb) {
303 p54_free_skb(dev, skb);
304 return;
305 }
306
307 hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
308 hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
309
310 usb_fill_bulk_urb(data_urb, priv->udev,
311 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
312 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
313 p54u_tx_cb : p54u_tx_dummy_cb, skb);
314 data_urb->transfer_flags |= URB_ZERO_PACKET;
315
316 usb_anchor_urb(data_urb, &priv->submitted);
317 if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
318 usb_unanchor_urb(data_urb);
319 p54_free_skb(dev, skb);
320 }
321 usb_free_urb(data_urb);
322 }
323
324 static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
325 {
326 struct p54u_priv *priv = dev->priv;
327 struct urb *int_urb = NULL, *data_urb = NULL;
328 struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
329 struct net2280_reg_write *reg = NULL;
330 int err = -ENOMEM;
331
332 reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
333 if (!reg)
334 goto out;
335
336 int_urb = usb_alloc_urb(0, GFP_ATOMIC);
337 if (!int_urb)
338 goto out;
339
340 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
341 if (!data_urb)
342 goto out;
343
344 reg->port = cpu_to_le16(NET2280_DEV_U32);
345 reg->addr = cpu_to_le32(P54U_DEV_BASE);
346 reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
347
348 memset(hdr, 0, sizeof(*hdr));
349 hdr->len = cpu_to_le16(skb->len);
350 hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
351
352 usb_fill_bulk_urb(int_urb, priv->udev,
353 usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
354 p54u_tx_dummy_cb, dev);
355
356 /*
357 * URB_FREE_BUFFER triggers a code path in the USB subsystem that will
358 * free what is inside the transfer_buffer after the last reference to
359 * the int_urb is dropped.
360 */
361 int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
362 reg = NULL;
363
364 usb_fill_bulk_urb(data_urb, priv->udev,
365 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
366 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
367 p54u_tx_cb : p54u_tx_dummy_cb, skb);
368 data_urb->transfer_flags |= URB_ZERO_PACKET;
369
370 usb_anchor_urb(int_urb, &priv->submitted);
371 err = usb_submit_urb(int_urb, GFP_ATOMIC);
372 if (err) {
373 usb_unanchor_urb(int_urb);
374 goto out;
375 }
376
377 usb_anchor_urb(data_urb, &priv->submitted);
378 err = usb_submit_urb(data_urb, GFP_ATOMIC);
379 if (err) {
380 usb_unanchor_urb(data_urb);
381 goto out;
382 }
383 out:
384 usb_free_urb(int_urb);
385 usb_free_urb(data_urb);
386
387 if (err) {
388 kfree(reg);
389 p54_free_skb(dev, skb);
390 }
391 }
392
393 static int p54u_write(struct p54u_priv *priv,
394 struct net2280_reg_write *buf,
395 enum net2280_op_type type,
396 __le32 addr, __le32 val)
397 {
398 unsigned int ep;
399 int alen;
400
401 if (type & 0x0800)
402 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
403 else
404 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
405
406 buf->port = cpu_to_le16(type);
407 buf->addr = addr;
408 buf->val = val;
409
410 return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
411 }
412
413 static int p54u_read(struct p54u_priv *priv, void *buf,
414 enum net2280_op_type type,
415 __le32 addr, __le32 *val)
416 {
417 struct net2280_reg_read *read = buf;
418 __le32 *reg = buf;
419 unsigned int ep;
420 int alen, err;
421
422 if (type & 0x0800)
423 ep = P54U_PIPE_DEV;
424 else
425 ep = P54U_PIPE_BRG;
426
427 read->port = cpu_to_le16(type);
428 read->addr = addr;
429
430 err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
431 read, sizeof(*read), &alen, 1000);
432 if (err)
433 return err;
434
435 err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
436 reg, sizeof(*reg), &alen, 1000);
437 if (err)
438 return err;
439
440 *val = *reg;
441 return 0;
442 }
443
444 static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
445 void *data, size_t len)
446 {
447 int alen;
448 return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
449 data, len, &alen, 2000);
450 }
451
452 static int p54u_device_reset(struct ieee80211_hw *dev)
453 {
454 struct p54u_priv *priv = dev->priv;
455 int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
456
457 if (lock) {
458 ret = usb_lock_device_for_reset(priv->udev, priv->intf);
459 if (ret < 0) {
460 dev_err(&priv->udev->dev, "(p54usb) unable to lock "
461 "device for reset (%d)!\n", ret);
462 return ret;
463 }
464 }
465
466 ret = usb_reset_device(priv->udev);
467 if (lock)
468 usb_unlock_device(priv->udev);
469
470 if (ret)
471 dev_err(&priv->udev->dev, "(p54usb) unable to reset "
472 "device (%d)!\n", ret);
473
474 return ret;
475 }
476
477 static const char p54u_romboot_3887[] = "~~~~";
478 static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
479 {
480 struct p54u_priv *priv = dev->priv;
481 u8 *buf;
482 int ret;
483
484 buf = kmemdup(p54u_romboot_3887, 4, GFP_KERNEL);
485 if (!buf)
486 return -ENOMEM;
487 ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
488 buf, 4);
489 kfree(buf);
490 if (ret)
491 dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
492 "boot ROM (%d)!\n", ret);
493
494 return ret;
495 }
496
497 static const char p54u_firmware_upload_3887[] = "<\r";
498 static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
499 {
500 struct p54u_priv *priv = dev->priv;
501 int err, alen;
502 u8 carry = 0;
503 u8 *buf, *tmp;
504 const u8 *data;
505 unsigned int left, remains, block_size;
506 struct x2_header *hdr;
507 unsigned long timeout;
508
509 err = p54u_firmware_reset_3887(dev);
510 if (err)
511 return err;
512
513 tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
514 if (!buf)
515 return -ENOMEM;
516
517 left = block_size = min((size_t)P54U_FW_BLOCK, priv->fw->size);
518 strcpy(buf, p54u_firmware_upload_3887);
519 left -= strlen(p54u_firmware_upload_3887);
520 tmp += strlen(p54u_firmware_upload_3887);
521
522 data = priv->fw->data;
523 remains = priv->fw->size;
524
525 hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
526 memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
527 hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
528 hdr->fw_length = cpu_to_le32(priv->fw->size);
529 hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
530 sizeof(u32)*2));
531 left -= sizeof(*hdr);
532 tmp += sizeof(*hdr);
533
534 while (remains) {
535 while (left--) {
536 if (carry) {
537 *tmp++ = carry;
538 carry = 0;
539 remains--;
540 continue;
541 }
542 switch (*data) {
543 case '~':
544 *tmp++ = '}';
545 carry = '^';
546 break;
547 case '}':
548 *tmp++ = '}';
549 carry = ']';
550 break;
551 default:
552 *tmp++ = *data;
553 remains--;
554 break;
555 }
556 data++;
557 }
558
559 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
560 if (err) {
561 dev_err(&priv->udev->dev, "(p54usb) firmware "
562 "upload failed!\n");
563 goto err_upload_failed;
564 }
565
566 tmp = buf;
567 left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
568 }
569
570 *((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, priv->fw->data,
571 priv->fw->size));
572 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
573 if (err) {
574 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
575 goto err_upload_failed;
576 }
577 timeout = jiffies + msecs_to_jiffies(1000);
578 while (!(err = usb_bulk_msg(priv->udev,
579 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
580 if (alen > 2 && !memcmp(buf, "OK", 2))
581 break;
582
583 if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
584 err = -EINVAL;
585 break;
586 }
587
588 if (time_after(jiffies, timeout)) {
589 dev_err(&priv->udev->dev, "(p54usb) firmware boot "
590 "timed out!\n");
591 err = -ETIMEDOUT;
592 break;
593 }
594 }
595 if (err) {
596 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
597 goto err_upload_failed;
598 }
599
600 buf[0] = 'g';
601 buf[1] = '\r';
602 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
603 if (err) {
604 dev_err(&priv->udev->dev, "(p54usb) firmware boot failed!\n");
605 goto err_upload_failed;
606 }
607
608 timeout = jiffies + msecs_to_jiffies(1000);
609 while (!(err = usb_bulk_msg(priv->udev,
610 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
611 if (alen > 0 && buf[0] == 'g')
612 break;
613
614 if (time_after(jiffies, timeout)) {
615 err = -ETIMEDOUT;
616 break;
617 }
618 }
619 if (err)
620 goto err_upload_failed;
621
622 err_upload_failed:
623 kfree(buf);
624 return err;
625 }
626
627 static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
628 {
629 struct p54u_priv *priv = dev->priv;
630 const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
631 int err, alen;
632 void *buf;
633 __le32 reg;
634 unsigned int remains, offset;
635 const u8 *data;
636
637 buf = kmalloc(512, GFP_KERNEL);
638 if (!buf)
639 return -ENOMEM;
640
641 #define P54U_WRITE(type, addr, data) \
642 do {\
643 err = p54u_write(priv, buf, type,\
644 cpu_to_le32((u32)(unsigned long)addr), data);\
645 if (err) \
646 goto fail;\
647 } while (0)
648
649 #define P54U_READ(type, addr) \
650 do {\
651 err = p54u_read(priv, buf, type,\
652 cpu_to_le32((u32)(unsigned long)addr), &reg);\
653 if (err)\
654 goto fail;\
655 } while (0)
656
657 /* power down net2280 bridge */
658 P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
659 reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
660 reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
661 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
662
663 mdelay(100);
664
665 /* power up bridge */
666 reg |= cpu_to_le32(P54U_BRG_POWER_UP);
667 reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
668 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
669
670 mdelay(100);
671
672 P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
673 cpu_to_le32(NET2280_CLK_30Mhz |
674 NET2280_PCI_ENABLE |
675 NET2280_PCI_SOFT_RESET));
676
677 mdelay(20);
678
679 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
680 cpu_to_le32(PCI_COMMAND_MEMORY |
681 PCI_COMMAND_MASTER));
682
683 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
684 cpu_to_le32(NET2280_BASE));
685
686 P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
687 reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
688 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
689
690 // TODO: we really need this?
691 P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
692
693 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
694 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
695 P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
696 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
697
698 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
699 cpu_to_le32(NET2280_BASE2));
700
701 /* finally done setting up the bridge */
702
703 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
704 cpu_to_le32(PCI_COMMAND_MEMORY |
705 PCI_COMMAND_MASTER));
706
707 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 /* TRDY timeout */, 0);
708 P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
709 cpu_to_le32(P54U_DEV_BASE));
710
711 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
712 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
713 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
714
715 /* do romboot */
716 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
717
718 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
719 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
720 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
721 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
722 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
723
724 mdelay(20);
725
726 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
727 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
728
729 mdelay(20);
730
731 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
732 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
733
734 mdelay(100);
735
736 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
737 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
738
739 /* finally, we can upload firmware now! */
740 remains = priv->fw->size;
741 data = priv->fw->data;
742 offset = ISL38XX_DEV_FIRMWARE_ADDR;
743
744 while (remains) {
745 unsigned int block_len = min(remains, (unsigned int)512);
746 memcpy(buf, data, block_len);
747
748 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
749 if (err) {
750 dev_err(&priv->udev->dev, "(p54usb) firmware block "
751 "upload failed\n");
752 goto fail;
753 }
754
755 P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
756 cpu_to_le32(0xc0000f00));
757
758 P54U_WRITE(NET2280_DEV_U32,
759 0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
760 P54U_WRITE(NET2280_DEV_U32,
761 0x0020 | (unsigned long)&devreg->direct_mem_win,
762 cpu_to_le32(1));
763
764 P54U_WRITE(NET2280_DEV_U32,
765 0x0024 | (unsigned long)&devreg->direct_mem_win,
766 cpu_to_le32(block_len));
767 P54U_WRITE(NET2280_DEV_U32,
768 0x0028 | (unsigned long)&devreg->direct_mem_win,
769 cpu_to_le32(offset));
770
771 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
772 cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
773 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
774 cpu_to_le32(block_len >> 2));
775 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
776 cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
777
778 mdelay(10);
779
780 P54U_READ(NET2280_DEV_U32,
781 0x002C | (unsigned long)&devreg->direct_mem_win);
782 if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
783 !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
784 dev_err(&priv->udev->dev, "(p54usb) firmware DMA "
785 "transfer failed\n");
786 goto fail;
787 }
788
789 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
790 cpu_to_le32(NET2280_FIFO_FLUSH));
791
792 remains -= block_len;
793 data += block_len;
794 offset += block_len;
795 }
796
797 /* do ramboot */
798 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
799 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
800 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
801 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
802 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
803
804 mdelay(20);
805
806 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
807 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
808
809 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
810 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
811
812 mdelay(100);
813
814 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
815 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
816
817 /* start up the firmware */
818 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
819 cpu_to_le32(ISL38XX_INT_IDENT_INIT));
820
821 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
822 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
823
824 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
825 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
826 NET2280_USB_INTERRUPT_ENABLE));
827
828 P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
829 cpu_to_le32(ISL38XX_DEV_INT_RESET));
830
831 err = usb_interrupt_msg(priv->udev,
832 usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
833 buf, sizeof(__le32), &alen, 1000);
834 if (err || alen != sizeof(__le32))
835 goto fail;
836
837 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
838 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
839
840 if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
841 err = -EINVAL;
842
843 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
844 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
845 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
846
847 #undef P54U_WRITE
848 #undef P54U_READ
849
850 fail:
851 kfree(buf);
852 return err;
853 }
854
855 static int p54_find_type(struct p54u_priv *priv)
856 {
857 int i;
858
859 for (i = 0; i < __NUM_P54U_HWTYPES; i++)
860 if (p54u_fwlist[i].type == priv->hw_type)
861 break;
862 if (i == __NUM_P54U_HWTYPES)
863 return -EOPNOTSUPP;
864
865 return i;
866 }
867
868 static int p54u_start_ops(struct p54u_priv *priv)
869 {
870 struct ieee80211_hw *dev = priv->common.hw;
871 int ret;
872
873 ret = p54_parse_firmware(dev, priv->fw);
874 if (ret)
875 goto err_out;
876
877 ret = p54_find_type(priv);
878 if (ret < 0)
879 goto err_out;
880
881 if (priv->common.fw_interface != p54u_fwlist[ret].intf) {
882 dev_err(&priv->udev->dev, "wrong firmware, please get "
883 "a firmware for \"%s\" and try again.\n",
884 p54u_fwlist[ret].hw);
885 ret = -ENODEV;
886 goto err_out;
887 }
888
889 ret = priv->upload_fw(dev);
890 if (ret)
891 goto err_out;
892
893 ret = p54u_open(dev);
894 if (ret)
895 goto err_out;
896
897 ret = p54_read_eeprom(dev);
898 if (ret)
899 goto err_stop;
900
901 p54u_stop(dev);
902
903 ret = p54_register_common(dev, &priv->udev->dev);
904 if (ret)
905 goto err_stop;
906
907 return 0;
908
909 err_stop:
910 p54u_stop(dev);
911
912 err_out:
913 /*
914 * p54u_disconnect will do the rest of the
915 * cleanup
916 */
917 return ret;
918 }
919
920 static void p54u_load_firmware_cb(const struct firmware *firmware,
921 void *context)
922 {
923 struct p54u_priv *priv = context;
924 struct usb_device *udev = priv->udev;
925 int err;
926
927 complete(&priv->fw_wait_load);
928 if (firmware) {
929 priv->fw = firmware;
930 err = p54u_start_ops(priv);
931 } else {
932 err = -ENOENT;
933 dev_err(&udev->dev, "Firmware not found.\n");
934 }
935
936 if (err) {
937 struct device *parent = priv->udev->dev.parent;
938
939 dev_err(&udev->dev, "failed to initialize device (%d)\n", err);
940
941 if (parent)
942 device_lock(parent);
943
944 device_release_driver(&udev->dev);
945 /*
946 * At this point p54u_disconnect has already freed
947 * the "priv" context. Do not use it anymore!
948 */
949 priv = NULL;
950
951 if (parent)
952 device_unlock(parent);
953 }
954
955 usb_put_dev(udev);
956 }
957
958 static int p54u_load_firmware(struct ieee80211_hw *dev,
959 struct usb_interface *intf)
960 {
961 struct usb_device *udev = interface_to_usbdev(intf);
962 struct p54u_priv *priv = dev->priv;
963 struct device *device = &udev->dev;
964 int err, i;
965
966 BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
967
968 init_completion(&priv->fw_wait_load);
969 i = p54_find_type(priv);
970 if (i < 0)
971 return i;
972
973 dev_info(&priv->udev->dev, "Loading firmware file %s\n",
974 p54u_fwlist[i].fw);
975
976 usb_get_dev(udev);
977 err = request_firmware_nowait(THIS_MODULE, 1, p54u_fwlist[i].fw,
978 device, GFP_KERNEL, priv,
979 p54u_load_firmware_cb);
980 if (err) {
981 dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
982 "(%d)!\n", p54u_fwlist[i].fw, err);
983 }
984
985 return err;
986 }
987
988 static int p54u_probe(struct usb_interface *intf,
989 const struct usb_device_id *id)
990 {
991 struct usb_device *udev = interface_to_usbdev(intf);
992 struct ieee80211_hw *dev;
993 struct p54u_priv *priv;
994 int err;
995 unsigned int i, recognized_pipes;
996
997 dev = p54_init_common(sizeof(*priv));
998
999 if (!dev) {
1000 dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
1001 return -ENOMEM;
1002 }
1003
1004 priv = dev->priv;
1005 priv->hw_type = P54U_INVALID_HW;
1006
1007 SET_IEEE80211_DEV(dev, &intf->dev);
1008 usb_set_intfdata(intf, dev);
1009 priv->udev = udev;
1010 priv->intf = intf;
1011 skb_queue_head_init(&priv->rx_queue);
1012 init_usb_anchor(&priv->submitted);
1013
1014 usb_get_dev(udev);
1015
1016 /* really lazy and simple way of figuring out if we're a 3887 */
1017 /* TODO: should just stick the identification in the device table */
1018 i = intf->altsetting->desc.bNumEndpoints;
1019 recognized_pipes = 0;
1020 while (i--) {
1021 switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
1022 case P54U_PIPE_DATA:
1023 case P54U_PIPE_MGMT:
1024 case P54U_PIPE_BRG:
1025 case P54U_PIPE_DEV:
1026 case P54U_PIPE_DATA | USB_DIR_IN:
1027 case P54U_PIPE_MGMT | USB_DIR_IN:
1028 case P54U_PIPE_BRG | USB_DIR_IN:
1029 case P54U_PIPE_DEV | USB_DIR_IN:
1030 case P54U_PIPE_INT | USB_DIR_IN:
1031 recognized_pipes++;
1032 }
1033 }
1034 priv->common.open = p54u_open;
1035 priv->common.stop = p54u_stop;
1036 if (recognized_pipes < P54U_PIPE_NUMBER) {
1037 #ifdef CONFIG_PM
1038 /* ISL3887 needs a full reset on resume */
1039 udev->reset_resume = 1;
1040 #endif /* CONFIG_PM */
1041 err = p54u_device_reset(dev);
1042
1043 priv->hw_type = P54U_3887;
1044 dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
1045 priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
1046 priv->common.tx = p54u_tx_lm87;
1047 priv->upload_fw = p54u_upload_firmware_3887;
1048 } else {
1049 priv->hw_type = P54U_NET2280;
1050 dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
1051 priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
1052 priv->common.tx = p54u_tx_net2280;
1053 priv->upload_fw = p54u_upload_firmware_net2280;
1054 }
1055 err = p54u_load_firmware(dev, intf);
1056 return err;
1057 }
1058
1059 static void p54u_disconnect(struct usb_interface *intf)
1060 {
1061 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1062 struct p54u_priv *priv;
1063
1064 if (!dev)
1065 return;
1066
1067 priv = dev->priv;
1068 wait_for_completion(&priv->fw_wait_load);
1069 p54_unregister_common(dev);
1070
1071 usb_put_dev(interface_to_usbdev(intf));
1072 release_firmware(priv->fw);
1073 p54_free_common(dev);
1074 }
1075
1076 static int p54u_pre_reset(struct usb_interface *intf)
1077 {
1078 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1079
1080 if (!dev)
1081 return -ENODEV;
1082
1083 p54u_stop(dev);
1084 return 0;
1085 }
1086
1087 static int p54u_resume(struct usb_interface *intf)
1088 {
1089 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1090 struct p54u_priv *priv;
1091
1092 if (!dev)
1093 return -ENODEV;
1094
1095 priv = dev->priv;
1096 if (unlikely(!(priv->upload_fw && priv->fw)))
1097 return 0;
1098
1099 return priv->upload_fw(dev);
1100 }
1101
1102 static int p54u_post_reset(struct usb_interface *intf)
1103 {
1104 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1105 struct p54u_priv *priv;
1106 int err;
1107
1108 err = p54u_resume(intf);
1109 if (err)
1110 return err;
1111
1112 /* reinitialize old device state */
1113 priv = dev->priv;
1114 if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
1115 ieee80211_restart_hw(dev);
1116
1117 return 0;
1118 }
1119
1120 #ifdef CONFIG_PM
1121
1122 static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
1123 {
1124 return p54u_pre_reset(intf);
1125 }
1126
1127 #endif /* CONFIG_PM */
1128
1129 static struct usb_driver p54u_driver = {
1130 .name = "p54usb",
1131 .id_table = p54u_table,
1132 .probe = p54u_probe,
1133 .disconnect = p54u_disconnect,
1134 .pre_reset = p54u_pre_reset,
1135 .post_reset = p54u_post_reset,
1136 #ifdef CONFIG_PM
1137 .suspend = p54u_suspend,
1138 .resume = p54u_resume,
1139 .reset_resume = p54u_resume,
1140 #endif /* CONFIG_PM */
1141 .soft_unbind = 1,
1142 .disable_hub_initiated_lpm = 1,
1143 };
1144
1145 module_usb_driver(p54u_driver);
kernel source for telekom puls (alcatel/mediatek)