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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / net / wireless / orinoco / orinoco_usb.c
blobfa56ae413d2e794360d7d21c3ce57ebcbd567fd2
1 /*
2 * USB Orinoco driver
3 *
4 * Copyright (c) 2003 Manuel Estrada Sainz
5 *
6 * The contents of this file are subject to the Mozilla Public License
7 * Version 1.1 (the "License"); you may not use this file except in
8 * compliance with the License. You may obtain a copy of the License
9 * at http://www.mozilla.org/MPL/
10 *
11 * Software distributed under the License is distributed on an "AS IS"
12 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
13 * the License for the specific language governing rights and
14 * limitations under the License.
15 *
16 * Alternatively, the contents of this file may be used under the
17 * terms of the GNU General Public License version 2 (the "GPL"), in
18 * which case the provisions of the GPL are applicable instead of the
19 * above. If you wish to allow the use of your version of this file
20 * only under the terms of the GPL and not to allow others to use your
21 * version of this file under the MPL, indicate your decision by
22 * deleting the provisions above and replace them with the notice and
23 * other provisions required by the GPL. If you do not delete the
24 * provisions above, a recipient may use your version of this file
25 * under either the MPL or the GPL.
26 *
27 * Queueing code based on linux-wlan-ng 0.2.1-pre5
28 *
29 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
30 *
31 * The license is the same as above.
32 *
33 * Initialy based on USB Skeleton driver - 0.7
34 *
35 * Copyright (c) 2001 Greg Kroah-Hartman (greg@kroah.com)
36 *
37 * This program is free software; you can redistribute it and/or
38 * modify it under the terms of the GNU General Public License as
39 * published by the Free Software Foundation; either version 2 of
40 * the License, or (at your option) any later version.
41 *
42 * NOTE: The original USB Skeleton driver is GPL, but all that code is
43 * gone so MPL/GPL applies.
44 */
45
46 #define DRIVER_NAME "orinoco_usb"
47 #define PFX DRIVER_NAME ": "
48
49 #include <linux/module.h>
50 #include <linux/kernel.h>
51 #include <linux/sched.h>
52 #include <linux/signal.h>
53 #include <linux/errno.h>
54 #include <linux/poll.h>
55 #include <linux/init.h>
56 #include <linux/slab.h>
57 #include <linux/fcntl.h>
58 #include <linux/spinlock.h>
59 #include <linux/list.h>
60 #include <linux/smp_lock.h>
61 #include <linux/usb.h>
62 #include <linux/timer.h>
63
64 #include <linux/netdevice.h>
65 #include <linux/if_arp.h>
66 #include <linux/etherdevice.h>
67 #include <linux/wireless.h>
68 #include <linux/firmware.h>
69
70 #include "mic.h"
71 #include "orinoco.h"
72
73 #ifndef URB_ASYNC_UNLINK
74 #define URB_ASYNC_UNLINK 0
75 #endif
76
77 /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
78 static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
79 #define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2)
80
81 struct header_struct {
82 /* 802.3 */
83 u8 dest[ETH_ALEN];
84 u8 src[ETH_ALEN];
85 __be16 len;
86 /* 802.2 */
87 u8 dsap;
88 u8 ssap;
89 u8 ctrl;
90 /* SNAP */
91 u8 oui[3];
92 __be16 ethertype;
93 } __packed;
94
95 struct ez_usb_fw {
96 u16 size;
97 const u8 *code;
98 };
99
100 static struct ez_usb_fw firmware = {
101 .size = 0,
102 .code = NULL,
103 };
104
105 #ifdef CONFIG_USB_DEBUG
106 static int debug = 1;
107 #else
108 static int debug;
109 #endif
110
111 /* Debugging macros */
112 #undef dbg
113 #define dbg(format, arg...) \
114 do { if (debug) printk(KERN_DEBUG PFX "%s: " format "\n", \
115 __func__ , ## arg); } while (0)
116 #undef err
117 #define err(format, arg...) \
118 do { printk(KERN_ERR PFX format "\n", ## arg); } while (0)
119
120 /* Module paramaters */
121 module_param(debug, int, 0644);
122 MODULE_PARM_DESC(debug, "Debug enabled or not");
123
124 MODULE_FIRMWARE("orinoco_ezusb_fw");
125
126 /*
127 * Under some conditions, the card gets stuck and stops paying attention
128 * to the world (i.e. data communication stalls) until we do something to
129 * it. Sending an INQ_TALLIES command seems to be enough and should be
130 * harmless otherwise. This behaviour has been observed when using the
131 * driver on a systemimager client during installation. In the past a
132 * timer was used to send INQ_TALLIES commands when there was no other
133 * activity, but it was troublesome and was removed.
134 */
135
136 #define USB_COMPAQ_VENDOR_ID 0x049f /* Compaq Computer Corp. */
137 #define USB_COMPAQ_WL215_ID 0x001f /* Compaq WL215 USB Adapter */
138 #define USB_COMPAQ_W200_ID 0x0076 /* Compaq W200 USB Adapter */
139 #define USB_HP_WL215_ID 0x0082 /* Compaq WL215 USB Adapter */
140
141 #define USB_MELCO_VENDOR_ID 0x0411
142 #define USB_BUFFALO_L11_ID 0x0006 /* BUFFALO WLI-USB-L11 */
143 #define USB_BUFFALO_L11G_WR_ID 0x000B /* BUFFALO WLI-USB-L11G-WR */
144 #define USB_BUFFALO_L11G_ID 0x000D /* BUFFALO WLI-USB-L11G */
145
146 #define USB_LUCENT_VENDOR_ID 0x047E /* Lucent Technologies */
147 #define USB_LUCENT_ORINOCO_ID 0x0300 /* Lucent/Agere Orinoco USB Client */
148
149 #define USB_AVAYA8_VENDOR_ID 0x0D98
150 #define USB_AVAYAE_VENDOR_ID 0x0D9E
151 #define USB_AVAYA_WIRELESS_ID 0x0300 /* Avaya Wireless USB Card */
152
153 #define USB_AGERE_VENDOR_ID 0x0D4E /* Agere Systems */
154 #define USB_AGERE_MODEL0801_ID 0x1000 /* Wireless USB Card Model 0801 */
155 #define USB_AGERE_MODEL0802_ID 0x1001 /* Wireless USB Card Model 0802 */
156 #define USB_AGERE_REBRANDED_ID 0x047A /* WLAN USB Card */
157
158 #define USB_ELSA_VENDOR_ID 0x05CC
159 #define USB_ELSA_AIRLANCER_ID 0x3100 /* ELSA AirLancer USB-11 */
160
161 #define USB_LEGEND_VENDOR_ID 0x0E7C
162 #define USB_LEGEND_JOYNET_ID 0x0300 /* Joynet WLAN USB Card */
163
164 #define USB_SAMSUNG_VENDOR_ID 0x04E8
165 #define USB_SAMSUNG_SEW2001U1_ID 0x5002 /* Samsung SEW-2001u Card */
166 #define USB_SAMSUNG_SEW2001U2_ID 0x5B11 /* Samsung SEW-2001u Card */
167 #define USB_SAMSUNG_SEW2003U_ID 0x7011 /* Samsung SEW-2003U Card */
168
169 #define USB_IGATE_VENDOR_ID 0x0681
170 #define USB_IGATE_IGATE_11M_ID 0x0012 /* I-GATE 11M USB Card */
171
172 #define USB_FUJITSU_VENDOR_ID 0x0BF8
173 #define USB_FUJITSU_E1100_ID 0x1002 /* connect2AIR WLAN E-1100 USB */
174
175 #define USB_2WIRE_VENDOR_ID 0x1630
176 #define USB_2WIRE_WIRELESS_ID 0xff81 /* 2Wire Wireless USB adapter */
177
178
179 #define EZUSB_REQUEST_FW_TRANS 0xA0
180 #define EZUSB_REQUEST_TRIGER 0xAA
181 #define EZUSB_REQUEST_TRIG_AC 0xAC
182 #define EZUSB_CPUCS_REG 0x7F92
183
184 #define EZUSB_RID_TX 0x0700
185 #define EZUSB_RID_RX 0x0701
186 #define EZUSB_RID_INIT1 0x0702
187 #define EZUSB_RID_ACK 0x0710
188 #define EZUSB_RID_READ_PDA 0x0800
189 #define EZUSB_RID_PROG_INIT 0x0852
190 #define EZUSB_RID_PROG_SET_ADDR 0x0853
191 #define EZUSB_RID_PROG_BYTES 0x0854
192 #define EZUSB_RID_PROG_END 0x0855
193 #define EZUSB_RID_DOCMD 0x0860
194
195 /* Recognize info frames */
196 #define EZUSB_IS_INFO(id) ((id >= 0xF000) && (id <= 0xF2FF))
197
198 #define EZUSB_MAGIC 0x0210
199
200 #define EZUSB_FRAME_DATA 1
201 #define EZUSB_FRAME_CONTROL 2
202
203 #define DEF_TIMEOUT (3*HZ)
204
205 #define BULK_BUF_SIZE 2048
206
207 #define MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet))
208
209 #define FW_BUF_SIZE 64
210 #define FW_VAR_OFFSET_PTR 0x359
211 #define FW_VAR_VALUE 0
212 #define FW_HOLE_START 0x100
213 #define FW_HOLE_END 0x300
214
215 struct ezusb_packet {
216 __le16 magic; /* 0x0210 */
217 u8 req_reply_count;
218 u8 ans_reply_count;
219 __le16 frame_type; /* 0x01 for data frames, 0x02 otherwise */
220 __le16 size; /* transport size */
221 __le16 crc; /* CRC up to here */
222 __le16 hermes_len;
223 __le16 hermes_rid;
224 u8 data[0];
225 } __packed;
226
227 /* Table of devices that work or may work with this driver */
228 static struct usb_device_id ezusb_table[] = {
229 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_WL215_ID)},
230 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_HP_WL215_ID)},
231 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_W200_ID)},
232 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11_ID)},
233 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_WR_ID)},
234 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_ID)},
235 {USB_DEVICE(USB_LUCENT_VENDOR_ID, USB_LUCENT_ORINOCO_ID)},
236 {USB_DEVICE(USB_AVAYA8_VENDOR_ID, USB_AVAYA_WIRELESS_ID)},
237 {USB_DEVICE(USB_AVAYAE_VENDOR_ID, USB_AVAYA_WIRELESS_ID)},
238 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0801_ID)},
239 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0802_ID)},
240 {USB_DEVICE(USB_ELSA_VENDOR_ID, USB_ELSA_AIRLANCER_ID)},
241 {USB_DEVICE(USB_LEGEND_VENDOR_ID, USB_LEGEND_JOYNET_ID)},
242 {USB_DEVICE_VER(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U1_ID,
243 0, 0)},
244 {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U2_ID)},
245 {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2003U_ID)},
246 {USB_DEVICE(USB_IGATE_VENDOR_ID, USB_IGATE_IGATE_11M_ID)},
247 {USB_DEVICE(USB_FUJITSU_VENDOR_ID, USB_FUJITSU_E1100_ID)},
248 {USB_DEVICE(USB_2WIRE_VENDOR_ID, USB_2WIRE_WIRELESS_ID)},
249 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_REBRANDED_ID)},
250 {} /* Terminating entry */
251 };
252
253 MODULE_DEVICE_TABLE(usb, ezusb_table);
254
255 /* Structure to hold all of our device specific stuff */
256 struct ezusb_priv {
257 struct usb_device *udev;
258 struct net_device *dev;
259 struct mutex mtx;
260 spinlock_t req_lock;
261 struct list_head req_pending;
262 struct list_head req_active;
263 spinlock_t reply_count_lock;
264 u16 hermes_reg_fake[0x40];
265 u8 *bap_buf;
266 struct urb *read_urb;
267 int read_pipe;
268 int write_pipe;
269 u8 reply_count;
270 };
271
272 enum ezusb_state {
273 EZUSB_CTX_START,
274 EZUSB_CTX_QUEUED,
275 EZUSB_CTX_REQ_SUBMITTED,
276 EZUSB_CTX_REQ_COMPLETE,
277 EZUSB_CTX_RESP_RECEIVED,
278 EZUSB_CTX_REQ_TIMEOUT,
279 EZUSB_CTX_REQ_FAILED,
280 EZUSB_CTX_RESP_TIMEOUT,
281 EZUSB_CTX_REQSUBMIT_FAIL,
282 EZUSB_CTX_COMPLETE,
283 };
284
285 struct request_context {
286 struct list_head list;
287 atomic_t refcount;
288 struct completion done; /* Signals that CTX is dead */
289 int killed;
290 struct urb *outurb; /* OUT for req pkt */
291 struct ezusb_priv *upriv;
292 struct ezusb_packet *buf;
293 int buf_length;
294 struct timer_list timer; /* Timeout handling */
295 enum ezusb_state state; /* Current state */
296 /* the RID that we will wait for */
297 u16 out_rid;
298 u16 in_rid;
299 };
300
301
302 /* Forward declarations */
303 static void ezusb_ctx_complete(struct request_context *ctx);
304 static void ezusb_req_queue_run(struct ezusb_priv *upriv);
305 static void ezusb_bulk_in_callback(struct urb *urb);
306
307 static inline u8 ezusb_reply_inc(u8 count)
308 {
309 if (count < 0x7F)
310 return count + 1;
311 else
312 return 1;
313 }
314
315 static void ezusb_request_context_put(struct request_context *ctx)
316 {
317 if (!atomic_dec_and_test(&ctx->refcount))
318 return;
319
320 WARN_ON(!ctx->done.done);
321 BUG_ON(ctx->outurb->status == -EINPROGRESS);
322 BUG_ON(timer_pending(&ctx->timer));
323 usb_free_urb(ctx->outurb);
324 kfree(ctx->buf);
325 kfree(ctx);
326 }
327
328 static inline void ezusb_mod_timer(struct ezusb_priv *upriv,
329 struct timer_list *timer,
330 unsigned long expire)
331 {
332 if (!upriv->udev)
333 return;
334 mod_timer(timer, expire);
335 }
336
337 static void ezusb_request_timerfn(u_long _ctx)
338 {
339 struct request_context *ctx = (void *) _ctx;
340
341 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
342 if (usb_unlink_urb(ctx->outurb) == -EINPROGRESS) {
343 ctx->state = EZUSB_CTX_REQ_TIMEOUT;
344 } else {
345 ctx->state = EZUSB_CTX_RESP_TIMEOUT;
346 dbg("couldn't unlink");
347 atomic_inc(&ctx->refcount);
348 ctx->killed = 1;
349 ezusb_ctx_complete(ctx);
350 ezusb_request_context_put(ctx);
351 }
352 };
353
354 static struct request_context *ezusb_alloc_ctx(struct ezusb_priv *upriv,
355 u16 out_rid, u16 in_rid)
356 {
357 struct request_context *ctx;
358
359 ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC);
360 if (!ctx)
361 return NULL;
362
363 ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC);
364 if (!ctx->buf) {
365 kfree(ctx);
366 return NULL;
367 }
368 ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC);
369 if (!ctx->outurb) {
370 kfree(ctx->buf);
371 kfree(ctx);
372 return NULL;
373 }
374
375 ctx->upriv = upriv;
376 ctx->state = EZUSB_CTX_START;
377 ctx->out_rid = out_rid;
378 ctx->in_rid = in_rid;
379
380 atomic_set(&ctx->refcount, 1);
381 init_completion(&ctx->done);
382
383 init_timer(&ctx->timer);
384 ctx->timer.function = ezusb_request_timerfn;
385 ctx->timer.data = (u_long) ctx;
386 return ctx;
387 }
388
389
390 /* Hopefully the real complete_all will soon be exported, in the mean
391 * while this should work. */
392 static inline void ezusb_complete_all(struct completion *comp)
393 {
394 complete(comp);
395 complete(comp);
396 complete(comp);
397 complete(comp);
398 }
399
400 static void ezusb_ctx_complete(struct request_context *ctx)
401 {
402 struct ezusb_priv *upriv = ctx->upriv;
403 unsigned long flags;
404
405 spin_lock_irqsave(&upriv->req_lock, flags);
406
407 list_del_init(&ctx->list);
408 if (upriv->udev) {
409 spin_unlock_irqrestore(&upriv->req_lock, flags);
410 ezusb_req_queue_run(upriv);
411 spin_lock_irqsave(&upriv->req_lock, flags);
412 }
413
414 switch (ctx->state) {
415 case EZUSB_CTX_COMPLETE:
416 case EZUSB_CTX_REQSUBMIT_FAIL:
417 case EZUSB_CTX_REQ_FAILED:
418 case EZUSB_CTX_REQ_TIMEOUT:
419 case EZUSB_CTX_RESP_TIMEOUT:
420 spin_unlock_irqrestore(&upriv->req_lock, flags);
421
422 if ((ctx->out_rid == EZUSB_RID_TX) && upriv->dev) {
423 struct net_device *dev = upriv->dev;
424 struct orinoco_private *priv = ndev_priv(dev);
425 struct net_device_stats *stats = &priv->stats;
426
427 if (ctx->state != EZUSB_CTX_COMPLETE)
428 stats->tx_errors++;
429 else
430 stats->tx_packets++;
431
432 netif_wake_queue(dev);
433 }
434 ezusb_complete_all(&ctx->done);
435 ezusb_request_context_put(ctx);
436 break;
437
438 default:
439 spin_unlock_irqrestore(&upriv->req_lock, flags);
440 if (!upriv->udev) {
441 /* This is normal, as all request contexts get flushed
442 * when the device is disconnected */
443 err("Called, CTX not terminating, but device gone");
444 ezusb_complete_all(&ctx->done);
445 ezusb_request_context_put(ctx);
446 break;
447 }
448
449 err("Called, CTX not in terminating state.");
450 /* Things are really bad if this happens. Just leak
451 * the CTX because it may still be linked to the
452 * queue or the OUT urb may still be active.
453 * Just leaking at least prevents an Oops or Panic.
454 */
455 break;
456 }
457 }
458
459 /**
460 * ezusb_req_queue_run:
461 * Description:
462 * Note: Only one active CTX at any one time, because there's no
463 * other (reliable) way to match the response URB to the correct
464 * CTX.
465 **/
466 static void ezusb_req_queue_run(struct ezusb_priv *upriv)
467 {
468 unsigned long flags;
469 struct request_context *ctx;
470 int result;
471
472 spin_lock_irqsave(&upriv->req_lock, flags);
473
474 if (!list_empty(&upriv->req_active))
475 goto unlock;
476
477 if (list_empty(&upriv->req_pending))
478 goto unlock;
479
480 ctx =
481 list_entry(upriv->req_pending.next, struct request_context,
482 list);
483
484 if (!ctx->upriv->udev)
485 goto unlock;
486
487 /* We need to split this off to avoid a race condition */
488 list_move_tail(&ctx->list, &upriv->req_active);
489
490 if (ctx->state == EZUSB_CTX_QUEUED) {
491 atomic_inc(&ctx->refcount);
492 result = usb_submit_urb(ctx->outurb, GFP_ATOMIC);
493 if (result) {
494 ctx->state = EZUSB_CTX_REQSUBMIT_FAIL;
495
496 spin_unlock_irqrestore(&upriv->req_lock, flags);
497
498 err("Fatal, failed to submit command urb."
499 " error=%d\n", result);
500
501 ezusb_ctx_complete(ctx);
502 ezusb_request_context_put(ctx);
503 goto done;
504 }
505
506 ctx->state = EZUSB_CTX_REQ_SUBMITTED;
507 ezusb_mod_timer(ctx->upriv, &ctx->timer,
508 jiffies + DEF_TIMEOUT);
509 }
510
511 unlock:
512 spin_unlock_irqrestore(&upriv->req_lock, flags);
513
514 done:
515 return;
516 }
517
518 static void ezusb_req_enqueue_run(struct ezusb_priv *upriv,
519 struct request_context *ctx)
520 {
521 unsigned long flags;
522
523 spin_lock_irqsave(&upriv->req_lock, flags);
524
525 if (!ctx->upriv->udev) {
526 spin_unlock_irqrestore(&upriv->req_lock, flags);
527 goto done;
528 }
529 atomic_inc(&ctx->refcount);
530 list_add_tail(&ctx->list, &upriv->req_pending);
531 spin_unlock_irqrestore(&upriv->req_lock, flags);
532
533 ctx->state = EZUSB_CTX_QUEUED;
534 ezusb_req_queue_run(upriv);
535
536 done:
537 return;
538 }
539
540 static void ezusb_request_out_callback(struct urb *urb)
541 {
542 unsigned long flags;
543 enum ezusb_state state;
544 struct request_context *ctx = urb->context;
545 struct ezusb_priv *upriv = ctx->upriv;
546
547 spin_lock_irqsave(&upriv->req_lock, flags);
548
549 del_timer(&ctx->timer);
550
551 if (ctx->killed) {
552 spin_unlock_irqrestore(&upriv->req_lock, flags);
553 pr_warning("interrupt called with dead ctx");
554 goto out;
555 }
556
557 state = ctx->state;
558
559 if (urb->status == 0) {
560 switch (state) {
561 case EZUSB_CTX_REQ_SUBMITTED:
562 if (ctx->in_rid) {
563 ctx->state = EZUSB_CTX_REQ_COMPLETE;
564 /* reply URB still pending */
565 ezusb_mod_timer(upriv, &ctx->timer,
566 jiffies + DEF_TIMEOUT);
567 spin_unlock_irqrestore(&upriv->req_lock,
568 flags);
569 break;
570 }
571 /* fall through */
572 case EZUSB_CTX_RESP_RECEIVED:
573 /* IN already received before this OUT-ACK */
574 ctx->state = EZUSB_CTX_COMPLETE;
575 spin_unlock_irqrestore(&upriv->req_lock, flags);
576 ezusb_ctx_complete(ctx);
577 break;
578
579 default:
580 spin_unlock_irqrestore(&upriv->req_lock, flags);
581 err("Unexpected state(0x%x, %d) in OUT URB",
582 state, urb->status);
583 break;
584 }
585 } else {
586 /* If someone cancels the OUT URB then its status
587 * should be either -ECONNRESET or -ENOENT.
588 */
589 switch (state) {
590 case EZUSB_CTX_REQ_SUBMITTED:
591 case EZUSB_CTX_RESP_RECEIVED:
592 ctx->state = EZUSB_CTX_REQ_FAILED;
593 /* fall through */
594
595 case EZUSB_CTX_REQ_FAILED:
596 case EZUSB_CTX_REQ_TIMEOUT:
597 spin_unlock_irqrestore(&upriv->req_lock, flags);
598
599 ezusb_ctx_complete(ctx);
600 break;
601
602 default:
603 spin_unlock_irqrestore(&upriv->req_lock, flags);
604
605 err("Unexpected state(0x%x, %d) in OUT URB",
606 state, urb->status);
607 break;
608 }
609 }
610 out:
611 ezusb_request_context_put(ctx);
612 }
613
614 static void ezusb_request_in_callback(struct ezusb_priv *upriv,
615 struct urb *urb)
616 {
617 struct ezusb_packet *ans = urb->transfer_buffer;
618 struct request_context *ctx = NULL;
619 enum ezusb_state state;
620 unsigned long flags;
621
622 /* Find the CTX on the active queue that requested this URB */
623 spin_lock_irqsave(&upriv->req_lock, flags);
624 if (upriv->udev) {
625 struct list_head *item;
626
627 list_for_each(item, &upriv->req_active) {
628 struct request_context *c;
629 int reply_count;
630
631 c = list_entry(item, struct request_context, list);
632 reply_count =
633 ezusb_reply_inc(c->buf->req_reply_count);
634 if ((ans->ans_reply_count == reply_count)
635 && (le16_to_cpu(ans->hermes_rid) == c->in_rid)) {
636 ctx = c;
637 break;
638 }
639 dbg("Skipped (0x%x/0x%x) (%d/%d)",
640 le16_to_cpu(ans->hermes_rid),
641 c->in_rid, ans->ans_reply_count, reply_count);
642 }
643 }
644
645 if (ctx == NULL) {
646 spin_unlock_irqrestore(&upriv->req_lock, flags);
647 err("%s: got unexpected RID: 0x%04X", __func__,
648 le16_to_cpu(ans->hermes_rid));
649 ezusb_req_queue_run(upriv);
650 return;
651 }
652
653 /* The data we want is in the in buffer, exchange */
654 urb->transfer_buffer = ctx->buf;
655 ctx->buf = (void *) ans;
656 ctx->buf_length = urb->actual_length;
657
658 state = ctx->state;
659 switch (state) {
660 case EZUSB_CTX_REQ_SUBMITTED:
661 /* We have received our response URB before
662 * our request has been acknowledged. Do NOT
663 * destroy our CTX yet, because our OUT URB
664 * is still alive ...
665 */
666 ctx->state = EZUSB_CTX_RESP_RECEIVED;
667 spin_unlock_irqrestore(&upriv->req_lock, flags);
668
669 /* Let the machine continue running. */
670 break;
671
672 case EZUSB_CTX_REQ_COMPLETE:
673 /* This is the usual path: our request
674 * has already been acknowledged, and
675 * we have now received the reply.
676 */
677 ctx->state = EZUSB_CTX_COMPLETE;
678
679 /* Stop the intimer */
680 del_timer(&ctx->timer);
681 spin_unlock_irqrestore(&upriv->req_lock, flags);
682
683 /* Call the completion handler */
684 ezusb_ctx_complete(ctx);
685 break;
686
687 default:
688 spin_unlock_irqrestore(&upriv->req_lock, flags);
689
690 pr_warning("Matched IN URB, unexpected context state(0x%x)",
691 state);
692 /* Throw this CTX away and try submitting another */
693 del_timer(&ctx->timer);
694 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
695 usb_unlink_urb(ctx->outurb);
696 ezusb_req_queue_run(upriv);
697 break;
698 } /* switch */
699 }
700
701
702 static void ezusb_req_ctx_wait(struct ezusb_priv *upriv,
703 struct request_context *ctx)
704 {
705 switch (ctx->state) {
706 case EZUSB_CTX_QUEUED:
707 case EZUSB_CTX_REQ_SUBMITTED:
708 case EZUSB_CTX_REQ_COMPLETE:
709 case EZUSB_CTX_RESP_RECEIVED:
710 if (in_softirq()) {
711 /* If we get called from a timer, timeout timers don't
712 * get the chance to run themselves. So we make sure
713 * that we don't sleep for ever */
714 int msecs = DEF_TIMEOUT * (1000 / HZ);
715 while (!ctx->done.done && msecs--)
716 udelay(1000);
717 } else {
718 wait_event_interruptible(ctx->done.wait,
719 ctx->done.done);
720 }
721 break;
722 default:
723 /* Done or failed - nothing to wait for */
724 break;
725 }
726 }
727
728 static inline u16 build_crc(struct ezusb_packet *data)
729 {
730 u16 crc = 0;
731 u8 *bytes = (u8 *)data;
732 int i;
733
734 for (i = 0; i < 8; i++)
735 crc = (crc << 1) + bytes[i];
736
737 return crc;
738 }
739
740 /**
741 * ezusb_fill_req:
742 *
743 * if data == NULL and length > 0 the data is assumed to be already in
744 * the target buffer and only the header is filled.
745 *
746 */
747 static int ezusb_fill_req(struct ezusb_packet *req, u16 length, u16 rid,
748 const void *data, u16 frame_type, u8 reply_count)
749 {
750 int total_size = sizeof(*req) + length;
751
752 BUG_ON(total_size > BULK_BUF_SIZE);
753
754 req->magic = cpu_to_le16(EZUSB_MAGIC);
755 req->req_reply_count = reply_count;
756 req->ans_reply_count = 0;
757 req->frame_type = cpu_to_le16(frame_type);
758 req->size = cpu_to_le16(length + 4);
759 req->crc = cpu_to_le16(build_crc(req));
760 req->hermes_len = cpu_to_le16(HERMES_BYTES_TO_RECLEN(length));
761 req->hermes_rid = cpu_to_le16(rid);
762 if (data)
763 memcpy(req->data, data, length);
764 return total_size;
765 }
766
767 static int ezusb_submit_in_urb(struct ezusb_priv *upriv)
768 {
769 int retval = 0;
770 void *cur_buf = upriv->read_urb->transfer_buffer;
771
772 if (upriv->read_urb->status == -EINPROGRESS) {
773 dbg("urb busy, not resubmiting");
774 retval = -EBUSY;
775 goto exit;
776 }
777 usb_fill_bulk_urb(upriv->read_urb, upriv->udev, upriv->read_pipe,
778 cur_buf, BULK_BUF_SIZE,
779 ezusb_bulk_in_callback, upriv);
780 upriv->read_urb->transfer_flags = 0;
781 retval = usb_submit_urb(upriv->read_urb, GFP_ATOMIC);
782 if (retval)
783 err("%s submit failed %d", __func__, retval);
784
785 exit:
786 return retval;
787 }
788
789 static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset)
790 {
791 u8 res_val = reset; /* avoid argument promotion */
792
793 if (!upriv->udev) {
794 err("%s: !upriv->udev", __func__);
795 return -EFAULT;
796 }
797 return usb_control_msg(upriv->udev,
798 usb_sndctrlpipe(upriv->udev, 0),
799 EZUSB_REQUEST_FW_TRANS,
800 USB_TYPE_VENDOR | USB_RECIP_DEVICE |
801 USB_DIR_OUT, EZUSB_CPUCS_REG, 0, &res_val,
802 sizeof(res_val), DEF_TIMEOUT);
803 }
804
805 static int ezusb_firmware_download(struct ezusb_priv *upriv,
806 struct ez_usb_fw *fw)
807 {
808 u8 fw_buffer[FW_BUF_SIZE];
809 int retval, addr;
810 int variant_offset;
811
812 /*
813 * This byte is 1 and should be replaced with 0. The offset is
814 * 0x10AD in version 0.0.6. The byte in question should follow
815 * the end of the code pointed to by the jump in the beginning
816 * of the firmware. Also, it is read by code located at 0x358.
817 */
818 variant_offset = be16_to_cpup((__be16 *) &fw->code[FW_VAR_OFFSET_PTR]);
819 if (variant_offset >= fw->size) {
820 printk(KERN_ERR PFX "Invalid firmware variant offset: "
821 "0x%04x\n", variant_offset);
822 retval = -EINVAL;
823 goto fail;
824 }
825
826 retval = ezusb_8051_cpucs(upriv, 1);
827 if (retval < 0)
828 goto fail;
829 for (addr = 0; addr < fw->size; addr += FW_BUF_SIZE) {
830 /* 0x100-0x300 should be left alone, it contains card
831 * specific data, like USB enumeration information */
832 if ((addr >= FW_HOLE_START) && (addr < FW_HOLE_END))
833 continue;
834
835 memcpy(fw_buffer, &fw->code[addr], FW_BUF_SIZE);
836 if (variant_offset >= addr &&
837 variant_offset < addr + FW_BUF_SIZE) {
838 dbg("Patching card_variant byte at 0x%04X",
839 variant_offset);
840 fw_buffer[variant_offset - addr] = FW_VAR_VALUE;
841 }
842 retval = usb_control_msg(upriv->udev,
843 usb_sndctrlpipe(upriv->udev, 0),
844 EZUSB_REQUEST_FW_TRANS,
845 USB_TYPE_VENDOR | USB_RECIP_DEVICE
846 | USB_DIR_OUT,
847 addr, 0x0,
848 fw_buffer, FW_BUF_SIZE,
849 DEF_TIMEOUT);
850
851 if (retval < 0)
852 goto fail;
853 }
854 retval = ezusb_8051_cpucs(upriv, 0);
855 if (retval < 0)
856 goto fail;
857
858 goto exit;
859 fail:
860 printk(KERN_ERR PFX "Firmware download failed, error %d\n",
861 retval);
862 exit:
863 return retval;
864 }
865
866 static int ezusb_access_ltv(struct ezusb_priv *upriv,
867 struct request_context *ctx,
868 u16 length, const void *data, u16 frame_type,
869 void *ans_buff, int ans_size, u16 *ans_length)
870 {
871 int req_size;
872 int retval = 0;
873 enum ezusb_state state;
874
875 BUG_ON(in_irq());
876
877 if (!upriv->udev) {
878 dbg("Device disconnected");
879 return -ENODEV;
880 }
881
882 if (upriv->read_urb->status != -EINPROGRESS)
883 err("%s: in urb not pending", __func__);
884
885 /* protect upriv->reply_count, guarantee sequential numbers */
886 spin_lock_bh(&upriv->reply_count_lock);
887 req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data,
888 frame_type, upriv->reply_count);
889 usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe,
890 ctx->buf, req_size,
891 ezusb_request_out_callback, ctx);
892
893 if (ctx->in_rid)
894 upriv->reply_count = ezusb_reply_inc(upriv->reply_count);
895
896 ezusb_req_enqueue_run(upriv, ctx);
897
898 spin_unlock_bh(&upriv->reply_count_lock);
899
900 if (ctx->in_rid)
901 ezusb_req_ctx_wait(upriv, ctx);
902
903 state = ctx->state;
904 switch (state) {
905 case EZUSB_CTX_COMPLETE:
906 retval = ctx->outurb->status;
907 break;
908
909 case EZUSB_CTX_QUEUED:
910 case EZUSB_CTX_REQ_SUBMITTED:
911 if (!ctx->in_rid)
912 break;
913 default:
914 err("%s: Unexpected context state %d", __func__,
915 state);
916 /* fall though */
917 case EZUSB_CTX_REQ_TIMEOUT:
918 case EZUSB_CTX_REQ_FAILED:
919 case EZUSB_CTX_RESP_TIMEOUT:
920 case EZUSB_CTX_REQSUBMIT_FAIL:
921 printk(KERN_ERR PFX "Access failed, resetting (state %d,"
922 " reply_count %d)\n", state, upriv->reply_count);
923 upriv->reply_count = 0;
924 if (state == EZUSB_CTX_REQ_TIMEOUT
925 || state == EZUSB_CTX_RESP_TIMEOUT) {
926 printk(KERN_ERR PFX "ctx timed out\n");
927 retval = -ETIMEDOUT;
928 } else {
929 printk(KERN_ERR PFX "ctx failed\n");
930 retval = -EFAULT;
931 }
932 goto exit;
933 break;
934 }
935 if (ctx->in_rid) {
936 struct ezusb_packet *ans = ctx->buf;
937 int exp_len;
938
939 if (ans->hermes_len != 0)
940 exp_len = le16_to_cpu(ans->hermes_len) * 2 + 12;
941 else
942 exp_len = 14;
943
944 if (exp_len != ctx->buf_length) {
945 err("%s: length mismatch for RID 0x%04x: "
946 "expected %d, got %d", __func__,
947 ctx->in_rid, exp_len, ctx->buf_length);
948 retval = -EIO;
949 goto exit;
950 }
951
952 if (ans_buff)
953 memcpy(ans_buff, ans->data,
954 min_t(int, exp_len, ans_size));
955 if (ans_length)
956 *ans_length = le16_to_cpu(ans->hermes_len);
957 }
958 exit:
959 ezusb_request_context_put(ctx);
960 return retval;
961 }
962
963 static int ezusb_write_ltv(hermes_t *hw, int bap, u16 rid,
964 u16 length, const void *data)
965 {
966 struct ezusb_priv *upriv = hw->priv;
967 u16 frame_type;
968 struct request_context *ctx;
969
970 if (length == 0)
971 return -EINVAL;
972
973 length = HERMES_RECLEN_TO_BYTES(length);
974
975 /* On memory mapped devices HERMES_RID_CNFGROUPADDRESSES can be
976 * set to be empty, but the USB bridge doesn't like it */
977 if (length == 0)
978 return 0;
979
980 ctx = ezusb_alloc_ctx(upriv, rid, EZUSB_RID_ACK);
981 if (!ctx)
982 return -ENOMEM;
983
984 if (rid == EZUSB_RID_TX)
985 frame_type = EZUSB_FRAME_DATA;
986 else
987 frame_type = EZUSB_FRAME_CONTROL;
988
989 return ezusb_access_ltv(upriv, ctx, length, data, frame_type,
990 NULL, 0, NULL);
991 }
992
993 static int ezusb_read_ltv(hermes_t *hw, int bap, u16 rid,
994 unsigned bufsize, u16 *length, void *buf)
995 {
996 struct ezusb_priv *upriv = hw->priv;
997 struct request_context *ctx;
998
999 if ((bufsize < 0) || (bufsize % 2))
1000 return -EINVAL;
1001
1002 ctx = ezusb_alloc_ctx(upriv, rid, rid);
1003 if (!ctx)
1004 return -ENOMEM;
1005
1006 return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL,
1007 buf, bufsize, length);
1008 }
1009
1010 static int ezusb_doicmd_wait(hermes_t *hw, u16 cmd, u16 parm0, u16 parm1,
1011 u16 parm2, struct hermes_response *resp)
1012 {
1013 struct ezusb_priv *upriv = hw->priv;
1014 struct request_context *ctx;
1015
1016 __le16 data[4] = {
1017 cpu_to_le16(cmd),
1018 cpu_to_le16(parm0),
1019 cpu_to_le16(parm1),
1020 cpu_to_le16(parm2),
1021 };
1022 dbg("0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X",
1023 cmd, parm0, parm1, parm2);
1024 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK);
1025 if (!ctx)
1026 return -ENOMEM;
1027
1028 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1029 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1030 }
1031
1032 static int ezusb_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0,
1033 struct hermes_response *resp)
1034 {
1035 struct ezusb_priv *upriv = hw->priv;
1036 struct request_context *ctx;
1037
1038 __le16 data[4] = {
1039 cpu_to_le16(cmd),
1040 cpu_to_le16(parm0),
1041 0,
1042 0,
1043 };
1044 dbg("0x%04X, parm0 0x%04X", cmd, parm0);
1045 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK);
1046 if (!ctx)
1047 return -ENOMEM;
1048
1049 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1050 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1051 }
1052
1053 static int ezusb_bap_pread(struct hermes *hw, int bap,
1054 void *buf, int len, u16 id, u16 offset)
1055 {
1056 struct ezusb_priv *upriv = hw->priv;
1057 struct ezusb_packet *ans = (void *) upriv->read_urb->transfer_buffer;
1058 int actual_length = upriv->read_urb->actual_length;
1059
1060 if (id == EZUSB_RID_RX) {
1061 if ((sizeof(*ans) + offset + len) > actual_length) {
1062 printk(KERN_ERR PFX "BAP read beyond buffer end "
1063 "in rx frame\n");
1064 return -EINVAL;
1065 }
1066 memcpy(buf, ans->data + offset, len);
1067 return 0;
1068 }
1069
1070 if (EZUSB_IS_INFO(id)) {
1071 /* Include 4 bytes for length/type */
1072 if ((sizeof(*ans) + offset + len - 4) > actual_length) {
1073 printk(KERN_ERR PFX "BAP read beyond buffer end "
1074 "in info frame\n");
1075 return -EFAULT;
1076 }
1077 memcpy(buf, ans->data + offset - 4, len);
1078 } else {
1079 printk(KERN_ERR PFX "Unexpected fid 0x%04x\n", id);
1080 return -EINVAL;
1081 }
1082
1083 return 0;
1084 }
1085
1086 static int ezusb_read_pda(struct hermes *hw, __le16 *pda,
1087 u32 pda_addr, u16 pda_len)
1088 {
1089 struct ezusb_priv *upriv = hw->priv;
1090 struct request_context *ctx;
1091 __le16 data[] = {
1092 cpu_to_le16(pda_addr & 0xffff),
1093 cpu_to_le16(pda_len - 4)
1094 };
1095 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_READ_PDA, EZUSB_RID_READ_PDA);
1096 if (!ctx)
1097 return -ENOMEM;
1098
1099 /* wl_lkm does not include PDA size in the PDA area.
1100 * We will pad the information into pda, so other routines
1101 * don't have to be modified */
1102 pda[0] = cpu_to_le16(pda_len - 2);
1103 /* Includes CFG_PROD_DATA but not itself */
1104 pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */
1105
1106 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1107 EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4,
1108 NULL);
1109 }
1110
1111 static int ezusb_program_init(struct hermes *hw, u32 entry_point)
1112 {
1113 struct ezusb_priv *upriv = hw->priv;
1114 struct request_context *ctx;
1115 __le32 data = cpu_to_le32(entry_point);
1116
1117 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_INIT, EZUSB_RID_ACK);
1118 if (!ctx)
1119 return -ENOMEM;
1120
1121 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1122 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1123 }
1124
1125 static int ezusb_program_end(struct hermes *hw)
1126 {
1127 struct ezusb_priv *upriv = hw->priv;
1128 struct request_context *ctx;
1129
1130 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_END, EZUSB_RID_ACK);
1131 if (!ctx)
1132 return -ENOMEM;
1133
1134 return ezusb_access_ltv(upriv, ctx, 0, NULL,
1135 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1136 }
1137
1138 static int ezusb_program_bytes(struct hermes *hw, const char *buf,
1139 u32 addr, u32 len)
1140 {
1141 struct ezusb_priv *upriv = hw->priv;
1142 struct request_context *ctx;
1143 __le32 data = cpu_to_le32(addr);
1144 int err;
1145
1146 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_SET_ADDR, EZUSB_RID_ACK);
1147 if (!ctx)
1148 return -ENOMEM;
1149
1150 err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1151 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1152 if (err)
1153 return err;
1154
1155 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_BYTES, EZUSB_RID_ACK);
1156 if (!ctx)
1157 return -ENOMEM;
1158
1159 return ezusb_access_ltv(upriv, ctx, len, buf,
1160 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1161 }
1162
1163 static int ezusb_program(struct hermes *hw, const char *buf,
1164 u32 addr, u32 len)
1165 {
1166 u32 ch_addr;
1167 u32 ch_len;
1168 int err = 0;
1169
1170 /* We can only send 2048 bytes out of the bulk xmit at a time,
1171 * so we have to split any programming into chunks of <2048
1172 * bytes. */
1173
1174 ch_len = (len < MAX_DL_SIZE) ? len : MAX_DL_SIZE;
1175 ch_addr = addr;
1176
1177 while (ch_addr < (addr + len)) {
1178 pr_debug("Programming subblock of length %d "
1179 "to address 0x%08x. Data @ %p\n",
1180 ch_len, ch_addr, &buf[ch_addr - addr]);
1181
1182 err = ezusb_program_bytes(hw, &buf[ch_addr - addr],
1183 ch_addr, ch_len);
1184 if (err)
1185 break;
1186
1187 ch_addr += ch_len;
1188 ch_len = ((addr + len - ch_addr) < MAX_DL_SIZE) ?
1189 (addr + len - ch_addr) : MAX_DL_SIZE;
1190 }
1191
1192 return err;
1193 }
1194
1195 static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev)
1196 {
1197 struct orinoco_private *priv = ndev_priv(dev);
1198 struct net_device_stats *stats = &priv->stats;
1199 struct ezusb_priv *upriv = priv->card;
1200 u8 mic[MICHAEL_MIC_LEN+1];
1201 int err = 0;
1202 int tx_control;
1203 unsigned long flags;
1204 struct request_context *ctx;
1205 u8 *buf;
1206 int tx_size;
1207
1208 if (!netif_running(dev)) {
1209 printk(KERN_ERR "%s: Tx on stopped device!\n",
1210 dev->name);
1211 return NETDEV_TX_BUSY;
1212 }
1213
1214 if (netif_queue_stopped(dev)) {
1215 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
1216 dev->name);
1217 return NETDEV_TX_BUSY;
1218 }
1219
1220 if (orinoco_lock(priv, &flags) != 0) {
1221 printk(KERN_ERR
1222 "%s: ezusb_xmit() called while hw_unavailable\n",
1223 dev->name);
1224 return NETDEV_TX_BUSY;
1225 }
1226
1227 if (!netif_carrier_ok(dev) ||
1228 (priv->iw_mode == NL80211_IFTYPE_MONITOR)) {
1229 /* Oops, the firmware hasn't established a connection,
1230 silently drop the packet (this seems to be the
1231 safest approach). */
1232 goto drop;
1233 }
1234
1235 /* Check packet length */
1236 if (skb->len < ETH_HLEN)
1237 goto drop;
1238
1239 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0);
1240 if (!ctx)
1241 goto busy;
1242
1243 memset(ctx->buf, 0, BULK_BUF_SIZE);
1244 buf = ctx->buf->data;
1245
1246 tx_control = 0;
1247
1248 err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control,
1249 &mic[0]);
1250 if (err)
1251 goto drop;
1252
1253 {
1254 __le16 *tx_cntl = (__le16 *)buf;
1255 *tx_cntl = cpu_to_le16(tx_control);
1256 buf += sizeof(*tx_cntl);
1257 }
1258
1259 memcpy(buf, skb->data, skb->len);
1260 buf += skb->len;
1261
1262 if (tx_control & HERMES_TXCTRL_MIC) {
1263 u8 *m = mic;
1264 /* Mic has been offset so it can be copied to an even
1265 * address. We're copying eveything anyway, so we
1266 * don't need to copy that first byte. */
1267 if (skb->len % 2)
1268 m++;
1269 memcpy(buf, m, MICHAEL_MIC_LEN);
1270 buf += MICHAEL_MIC_LEN;
1271 }
1272
1273 /* Finally, we actually initiate the send */
1274 netif_stop_queue(dev);
1275
1276 /* The card may behave better if we send evenly sized usb transfers */
1277 tx_size = ALIGN(buf - ctx->buf->data, 2);
1278
1279 err = ezusb_access_ltv(upriv, ctx, tx_size, NULL,
1280 EZUSB_FRAME_DATA, NULL, 0, NULL);
1281
1282 if (err) {
1283 netif_start_queue(dev);
1284 if (net_ratelimit())
1285 printk(KERN_ERR "%s: Error %d transmitting packet\n",
1286 dev->name, err);
1287 goto busy;
1288 }
1289
1290 dev->trans_start = jiffies;
1291 stats->tx_bytes += skb->len;
1292 goto ok;
1293
1294 drop:
1295 stats->tx_errors++;
1296 stats->tx_dropped++;
1297
1298 ok:
1299 orinoco_unlock(priv, &flags);
1300 dev_kfree_skb(skb);
1301 return NETDEV_TX_OK;
1302
1303 busy:
1304 orinoco_unlock(priv, &flags);
1305 return NETDEV_TX_BUSY;
1306 }
1307
1308 static int ezusb_allocate(struct hermes *hw, u16 size, u16 *fid)
1309 {
1310 *fid = EZUSB_RID_TX;
1311 return 0;
1312 }
1313
1314
1315 static int ezusb_hard_reset(struct orinoco_private *priv)
1316 {
1317 struct ezusb_priv *upriv = priv->card;
1318 int retval = ezusb_8051_cpucs(upriv, 1);
1319
1320 if (retval < 0) {
1321 err("Failed to reset");
1322 return retval;
1323 }
1324
1325 retval = ezusb_8051_cpucs(upriv, 0);
1326 if (retval < 0) {
1327 err("Failed to unreset");
1328 return retval;
1329 }
1330
1331 dbg("sending control message");
1332 retval = usb_control_msg(upriv->udev,
1333 usb_sndctrlpipe(upriv->udev, 0),
1334 EZUSB_REQUEST_TRIGER,
1335 USB_TYPE_VENDOR | USB_RECIP_DEVICE |
1336 USB_DIR_OUT, 0x0, 0x0, NULL, 0,
1337 DEF_TIMEOUT);
1338 if (retval < 0) {
1339 err("EZUSB_REQUEST_TRIGER failed retval %d", retval);
1340 return retval;
1341 }
1342
1343 return 0;
1344 }
1345
1346
1347 static int ezusb_init(hermes_t *hw)
1348 {
1349 struct ezusb_priv *upriv = hw->priv;
1350 int retval;
1351
1352 BUG_ON(in_interrupt());
1353 BUG_ON(!upriv);
1354
1355 upriv->reply_count = 0;
1356 /* Write the MAGIC number on the simulated registers to keep
1357 * orinoco.c happy */
1358 hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC);
1359 hermes_write_regn(hw, RXFID, EZUSB_RID_RX);
1360
1361 usb_kill_urb(upriv->read_urb);
1362 ezusb_submit_in_urb(upriv);
1363
1364 retval = ezusb_write_ltv(hw, 0, EZUSB_RID_INIT1,
1365 HERMES_BYTES_TO_RECLEN(2), "\x10\x00");
1366 if (retval < 0) {
1367 printk(KERN_ERR PFX "EZUSB_RID_INIT1 error %d\n", retval);
1368 return retval;
1369 }
1370
1371 retval = ezusb_docmd_wait(hw, HERMES_CMD_INIT, 0, NULL);
1372 if (retval < 0) {
1373 printk(KERN_ERR PFX "HERMES_CMD_INIT error %d\n", retval);
1374 return retval;
1375 }
1376
1377 return 0;
1378 }
1379
1380 static void ezusb_bulk_in_callback(struct urb *urb)
1381 {
1382 struct ezusb_priv *upriv = (struct ezusb_priv *) urb->context;
1383 struct ezusb_packet *ans = urb->transfer_buffer;
1384 u16 crc;
1385 u16 hermes_rid;
1386
1387 if (upriv->udev == NULL) {
1388 dbg("disconnected");
1389 return;
1390 }
1391
1392 if (urb->status == -ETIMEDOUT) {
1393 /* When a device gets unplugged we get this every time
1394 * we resubmit, flooding the logs. Since we don't use
1395 * USB timeouts, it shouldn't happen any other time*/
1396 pr_warning("%s: urb timed out, not resubmiting", __func__);
1397 return;
1398 }
1399 if (urb->status == -ECONNABORTED) {
1400 pr_warning("%s: connection abort, resubmiting urb",
1401 __func__);
1402 goto resubmit;
1403 }
1404 if ((urb->status == -EILSEQ)
1405 || (urb->status == -ENOENT)
1406 || (urb->status == -ECONNRESET)) {
1407 dbg("status %d, not resubmiting", urb->status);
1408 return;
1409 }
1410 if (urb->status)
1411 dbg("status: %d length: %d",
1412 urb->status, urb->actual_length);
1413 if (urb->actual_length < sizeof(*ans)) {
1414 err("%s: short read, ignoring", __func__);
1415 goto resubmit;
1416 }
1417 crc = build_crc(ans);
1418 if (le16_to_cpu(ans->crc) != crc) {
1419 err("CRC error, ignoring packet");
1420 goto resubmit;
1421 }
1422
1423 hermes_rid = le16_to_cpu(ans->hermes_rid);
1424 if ((hermes_rid != EZUSB_RID_RX) && !EZUSB_IS_INFO(hermes_rid)) {
1425 ezusb_request_in_callback(upriv, urb);
1426 } else if (upriv->dev) {
1427 struct net_device *dev = upriv->dev;
1428 struct orinoco_private *priv = ndev_priv(dev);
1429 hermes_t *hw = &priv->hw;
1430
1431 if (hermes_rid == EZUSB_RID_RX) {
1432 __orinoco_ev_rx(dev, hw);
1433 } else {
1434 hermes_write_regn(hw, INFOFID,
1435 le16_to_cpu(ans->hermes_rid));
1436 __orinoco_ev_info(dev, hw);
1437 }
1438 }
1439
1440 resubmit:
1441 if (upriv->udev)
1442 ezusb_submit_in_urb(upriv);
1443 }
1444
1445 static inline void ezusb_delete(struct ezusb_priv *upriv)
1446 {
1447 struct net_device *dev;
1448 struct list_head *item;
1449 struct list_head *tmp_item;
1450 unsigned long flags;
1451
1452 BUG_ON(in_interrupt());
1453 BUG_ON(!upriv);
1454
1455 dev = upriv->dev;
1456 mutex_lock(&upriv->mtx);
1457
1458 upriv->udev = NULL; /* No timer will be rearmed from here */
1459
1460 usb_kill_urb(upriv->read_urb);
1461
1462 spin_lock_irqsave(&upriv->req_lock, flags);
1463 list_for_each_safe(item, tmp_item, &upriv->req_active) {
1464 struct request_context *ctx;
1465 int err;
1466
1467 ctx = list_entry(item, struct request_context, list);
1468 atomic_inc(&ctx->refcount);
1469
1470 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
1471 err = usb_unlink_urb(ctx->outurb);
1472
1473 spin_unlock_irqrestore(&upriv->req_lock, flags);
1474 if (err == -EINPROGRESS)
1475 wait_for_completion(&ctx->done);
1476
1477 del_timer_sync(&ctx->timer);
1478 if (!list_empty(&ctx->list))
1479 ezusb_ctx_complete(ctx);
1480
1481 ezusb_request_context_put(ctx);
1482 spin_lock_irqsave(&upriv->req_lock, flags);
1483 }
1484 spin_unlock_irqrestore(&upriv->req_lock, flags);
1485
1486 list_for_each_safe(item, tmp_item, &upriv->req_pending)
1487 ezusb_ctx_complete(list_entry(item,
1488 struct request_context, list));
1489
1490 if (upriv->read_urb && upriv->read_urb->status == -EINPROGRESS)
1491 printk(KERN_ERR PFX "Some URB in progress\n");
1492
1493 mutex_unlock(&upriv->mtx);
1494
1495 if (upriv->read_urb) {
1496 kfree(upriv->read_urb->transfer_buffer);
1497 usb_free_urb(upriv->read_urb);
1498 }
1499 kfree(upriv->bap_buf);
1500 if (upriv->dev) {
1501 struct orinoco_private *priv = ndev_priv(upriv->dev);
1502 orinoco_if_del(priv);
1503 free_orinocodev(priv);
1504 }
1505 }
1506
1507 static void ezusb_lock_irqsave(spinlock_t *lock,
1508 unsigned long *flags) __acquires(lock)
1509 {
1510 spin_lock_bh(lock);
1511 }
1512
1513 static void ezusb_unlock_irqrestore(spinlock_t *lock,
1514 unsigned long *flags) __releases(lock)
1515 {
1516 spin_unlock_bh(lock);
1517 }
1518
1519 static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock)
1520 {
1521 spin_lock_bh(lock);
1522 }
1523
1524 static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock)
1525 {
1526 spin_unlock_bh(lock);
1527 }
1528
1529 static const struct hermes_ops ezusb_ops = {
1530 .init = ezusb_init,
1531 .cmd_wait = ezusb_docmd_wait,
1532 .init_cmd_wait = ezusb_doicmd_wait,
1533 .allocate = ezusb_allocate,
1534 .read_ltv = ezusb_read_ltv,
1535 .write_ltv = ezusb_write_ltv,
1536 .bap_pread = ezusb_bap_pread,
1537 .read_pda = ezusb_read_pda,
1538 .program_init = ezusb_program_init,
1539 .program_end = ezusb_program_end,
1540 .program = ezusb_program,
1541 .lock_irqsave = ezusb_lock_irqsave,
1542 .unlock_irqrestore = ezusb_unlock_irqrestore,
1543 .lock_irq = ezusb_lock_irq,
1544 .unlock_irq = ezusb_unlock_irq,
1545 };
1546
1547 static const struct net_device_ops ezusb_netdev_ops = {
1548 .ndo_open = orinoco_open,
1549 .ndo_stop = orinoco_stop,
1550 .ndo_start_xmit = ezusb_xmit,
1551 .ndo_set_multicast_list = orinoco_set_multicast_list,
1552 .ndo_change_mtu = orinoco_change_mtu,
1553 .ndo_set_mac_address = eth_mac_addr,
1554 .ndo_validate_addr = eth_validate_addr,
1555 .ndo_tx_timeout = orinoco_tx_timeout,
1556 .ndo_get_stats = orinoco_get_stats,
1557 };
1558
1559 static int ezusb_probe(struct usb_interface *interface,
1560 const struct usb_device_id *id)
1561 {
1562 struct usb_device *udev = interface_to_usbdev(interface);
1563 struct orinoco_private *priv;
1564 hermes_t *hw;
1565 struct ezusb_priv *upriv = NULL;
1566 struct usb_interface_descriptor *iface_desc;
1567 struct usb_endpoint_descriptor *ep;
1568 const struct firmware *fw_entry;
1569 int retval = 0;
1570 int i;
1571
1572 priv = alloc_orinocodev(sizeof(*upriv), &udev->dev,
1573 ezusb_hard_reset, NULL);
1574 if (!priv) {
1575 err("Couldn't allocate orinocodev");
1576 goto exit;
1577 }
1578
1579 hw = &priv->hw;
1580
1581 upriv = priv->card;
1582
1583 mutex_init(&upriv->mtx);
1584 spin_lock_init(&upriv->reply_count_lock);
1585
1586 spin_lock_init(&upriv->req_lock);
1587 INIT_LIST_HEAD(&upriv->req_pending);
1588 INIT_LIST_HEAD(&upriv->req_active);
1589
1590 upriv->udev = udev;
1591
1592 hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake;
1593 hw->reg_spacing = HERMES_16BIT_REGSPACING;
1594 hw->priv = upriv;
1595 hw->ops = &ezusb_ops;
1596
1597 /* set up the endpoint information */
1598 /* check out the endpoints */
1599
1600 iface_desc = &interface->altsetting[0].desc;
1601 for (i = 0; i < iface_desc->bNumEndpoints; ++i) {
1602 ep = &interface->altsetting[0].endpoint[i].desc;
1603
1604 if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1605 == USB_DIR_IN) &&
1606 ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1607 == USB_ENDPOINT_XFER_BULK)) {
1608 /* we found a bulk in endpoint */
1609 if (upriv->read_urb != NULL) {
1610 pr_warning("Found a second bulk in ep, ignored");
1611 continue;
1612 }
1613
1614 upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL);
1615 if (!upriv->read_urb) {
1616 err("No free urbs available");
1617 goto error;
1618 }
1619 if (le16_to_cpu(ep->wMaxPacketSize) != 64)
1620 pr_warning("bulk in: wMaxPacketSize!= 64");
1621 if (ep->bEndpointAddress != (2 | USB_DIR_IN))
1622 pr_warning("bulk in: bEndpointAddress: %d",
1623 ep->bEndpointAddress);
1624 upriv->read_pipe = usb_rcvbulkpipe(udev,
1625 ep->
1626 bEndpointAddress);
1627 upriv->read_urb->transfer_buffer =
1628 kmalloc(BULK_BUF_SIZE, GFP_KERNEL);
1629 if (!upriv->read_urb->transfer_buffer) {
1630 err("Couldn't allocate IN buffer");
1631 goto error;
1632 }
1633 }
1634
1635 if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1636 == USB_DIR_OUT) &&
1637 ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1638 == USB_ENDPOINT_XFER_BULK)) {
1639 /* we found a bulk out endpoint */
1640 if (upriv->bap_buf != NULL) {
1641 pr_warning("Found a second bulk out ep, ignored");
1642 continue;
1643 }
1644
1645 if (le16_to_cpu(ep->wMaxPacketSize) != 64)
1646 pr_warning("bulk out: wMaxPacketSize != 64");
1647 if (ep->bEndpointAddress != 2)
1648 pr_warning("bulk out: bEndpointAddress: %d",
1649 ep->bEndpointAddress);
1650 upriv->write_pipe = usb_sndbulkpipe(udev,
1651 ep->
1652 bEndpointAddress);
1653 upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL);
1654 if (!upriv->bap_buf) {
1655 err("Couldn't allocate bulk_out_buffer");
1656 goto error;
1657 }
1658 }
1659 }
1660 if (!upriv->bap_buf || !upriv->read_urb) {
1661 err("Didn't find the required bulk endpoints");
1662 goto error;
1663 }
1664
1665 if (request_firmware(&fw_entry, "orinoco_ezusb_fw",
1666 &interface->dev) == 0) {
1667 firmware.size = fw_entry->size;
1668 firmware.code = fw_entry->data;
1669 }
1670 if (firmware.size && firmware.code) {
1671 ezusb_firmware_download(upriv, &firmware);
1672 } else {
1673 err("No firmware to download");
1674 goto error;
1675 }
1676
1677 if (ezusb_hard_reset(priv) < 0) {
1678 err("Cannot reset the device");
1679 goto error;
1680 }
1681
1682 /* If the firmware is already downloaded orinoco.c will call
1683 * ezusb_init but if the firmware is not already there, that will make
1684 * the kernel very unstable, so we try initializing here and quit in
1685 * case of error */
1686 if (ezusb_init(hw) < 0) {
1687 err("Couldn't initialize the device");
1688 err("Firmware may not be downloaded or may be wrong.");
1689 goto error;
1690 }
1691
1692 /* Initialise the main driver */
1693 if (orinoco_init(priv) != 0) {
1694 err("orinoco_init() failed\n");
1695 goto error;
1696 }
1697
1698 if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) {
1699 upriv->dev = NULL;
1700 err("%s: orinoco_if_add() failed", __func__);
1701 goto error;
1702 }
1703 upriv->dev = priv->ndev;
1704
1705 goto exit;
1706
1707 error:
1708 ezusb_delete(upriv);
1709 if (upriv->dev) {
1710 /* upriv->dev was 0, so ezusb_delete() didn't free it */
1711 free_orinocodev(priv);
1712 }
1713 upriv = NULL;
1714 retval = -EFAULT;
1715 exit:
1716 if (fw_entry) {
1717 firmware.code = NULL;
1718 firmware.size = 0;
1719 release_firmware(fw_entry);
1720 }
1721 usb_set_intfdata(interface, upriv);
1722 return retval;
1723 }
1724
1725
1726 static void ezusb_disconnect(struct usb_interface *intf)
1727 {
1728 struct ezusb_priv *upriv = usb_get_intfdata(intf);
1729 usb_set_intfdata(intf, NULL);
1730 ezusb_delete(upriv);
1731 printk(KERN_INFO PFX "Disconnected\n");
1732 }
1733
1734
1735 /* usb specific object needed to register this driver with the usb subsystem */
1736 static struct usb_driver orinoco_driver = {
1737 .name = DRIVER_NAME,
1738 .probe = ezusb_probe,
1739 .disconnect = ezusb_disconnect,
1740 .id_table = ezusb_table,
1741 };
1742
1743 /* Can't be declared "const" or the whole __initdata section will
1744 * become const */
1745 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
1746 " (Manuel Estrada Sainz)";
1747
1748 static int __init ezusb_module_init(void)
1749 {
1750 int err;
1751
1752 printk(KERN_DEBUG "%s\n", version);
1753
1754 /* register this driver with the USB subsystem */
1755 err = usb_register(&orinoco_driver);
1756 if (err < 0) {
1757 printk(KERN_ERR PFX "usb_register failed, error %d\n",
1758 err);
1759 return err;
1760 }
1761
1762 return 0;
1763 }
1764
1765 static void __exit ezusb_module_exit(void)
1766 {
1767 /* deregister this driver with the USB subsystem */
1768 usb_deregister(&orinoco_driver);
1769 }
1770
1771
1772 module_init(ezusb_module_init);
1773 module_exit(ezusb_module_exit);
1774
1775 MODULE_AUTHOR("Manuel Estrada Sainz");
1776 MODULE_DESCRIPTION
1777 ("Driver for Orinoco wireless LAN cards using EZUSB bridge");
1778 MODULE_LICENSE("Dual MPL/GPL");
Tomato firmware and modifications.