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Revert "Merge branch 'ath6kl-next' of master.kernel.org:/pub/scm/linux/kernel/git...
[linux-2.6/next.git] / drivers / net / wireless / orinoco / orinoco_usb.c
blob811e87f8a349db7194a4ba8786c9de98a5618ebe
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/usb.h>
61 #include <linux/timer.h>
62
63 #include <linux/netdevice.h>
64 #include <linux/if_arp.h>
65 #include <linux/etherdevice.h>
66 #include <linux/wireless.h>
67 #include <linux/firmware.h>
68
69 #include "mic.h"
70 #include "orinoco.h"
71
72 #ifndef URB_ASYNC_UNLINK
73 #define URB_ASYNC_UNLINK 0
74 #endif
75
76 /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
77 static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
78 #define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2)
79
80 struct header_struct {
81 /* 802.3 */
82 u8 dest[ETH_ALEN];
83 u8 src[ETH_ALEN];
84 __be16 len;
85 /* 802.2 */
86 u8 dsap;
87 u8 ssap;
88 u8 ctrl;
89 /* SNAP */
90 u8 oui[3];
91 __be16 ethertype;
92 } __packed;
93
94 struct ez_usb_fw {
95 u16 size;
96 const u8 *code;
97 };
98
99 static struct ez_usb_fw firmware = {
100 .size = 0,
101 .code = NULL,
102 };
103
104 #ifdef CONFIG_USB_DEBUG
105 static int debug = 1;
106 #else
107 static int debug;
108 #endif
109
110 /* Debugging macros */
111 #undef dbg
112 #define dbg(format, arg...) \
113 do { if (debug) printk(KERN_DEBUG PFX "%s: " format "\n", \
114 __func__ , ## arg); } while (0)
115 #undef err
116 #define err(format, arg...) \
117 do { printk(KERN_ERR PFX format "\n", ## arg); } while (0)
118
119 /* Module paramaters */
120 module_param(debug, int, 0644);
121 MODULE_PARM_DESC(debug, "Debug enabled or not");
122
123 MODULE_FIRMWARE("orinoco_ezusb_fw");
124
125 /*
126 * Under some conditions, the card gets stuck and stops paying attention
127 * to the world (i.e. data communication stalls) until we do something to
128 * it. Sending an INQ_TALLIES command seems to be enough and should be
129 * harmless otherwise. This behaviour has been observed when using the
130 * driver on a systemimager client during installation. In the past a
131 * timer was used to send INQ_TALLIES commands when there was no other
132 * activity, but it was troublesome and was removed.
133 */
134
135 #define USB_COMPAQ_VENDOR_ID 0x049f /* Compaq Computer Corp. */
136 #define USB_COMPAQ_WL215_ID 0x001f /* Compaq WL215 USB Adapter */
137 #define USB_COMPAQ_W200_ID 0x0076 /* Compaq W200 USB Adapter */
138 #define USB_HP_WL215_ID 0x0082 /* Compaq WL215 USB Adapter */
139
140 #define USB_MELCO_VENDOR_ID 0x0411
141 #define USB_BUFFALO_L11_ID 0x0006 /* BUFFALO WLI-USB-L11 */
142 #define USB_BUFFALO_L11G_WR_ID 0x000B /* BUFFALO WLI-USB-L11G-WR */
143 #define USB_BUFFALO_L11G_ID 0x000D /* BUFFALO WLI-USB-L11G */
144
145 #define USB_LUCENT_VENDOR_ID 0x047E /* Lucent Technologies */
146 #define USB_LUCENT_ORINOCO_ID 0x0300 /* Lucent/Agere Orinoco USB Client */
147
148 #define USB_AVAYA8_VENDOR_ID 0x0D98
149 #define USB_AVAYAE_VENDOR_ID 0x0D9E
150 #define USB_AVAYA_WIRELESS_ID 0x0300 /* Avaya Wireless USB Card */
151
152 #define USB_AGERE_VENDOR_ID 0x0D4E /* Agere Systems */
153 #define USB_AGERE_MODEL0801_ID 0x1000 /* Wireless USB Card Model 0801 */
154 #define USB_AGERE_MODEL0802_ID 0x1001 /* Wireless USB Card Model 0802 */
155 #define USB_AGERE_REBRANDED_ID 0x047A /* WLAN USB Card */
156
157 #define USB_ELSA_VENDOR_ID 0x05CC
158 #define USB_ELSA_AIRLANCER_ID 0x3100 /* ELSA AirLancer USB-11 */
159
160 #define USB_LEGEND_VENDOR_ID 0x0E7C
161 #define USB_LEGEND_JOYNET_ID 0x0300 /* Joynet WLAN USB Card */
162
163 #define USB_SAMSUNG_VENDOR_ID 0x04E8
164 #define USB_SAMSUNG_SEW2001U1_ID 0x5002 /* Samsung SEW-2001u Card */
165 #define USB_SAMSUNG_SEW2001U2_ID 0x5B11 /* Samsung SEW-2001u Card */
166 #define USB_SAMSUNG_SEW2003U_ID 0x7011 /* Samsung SEW-2003U Card */
167
168 #define USB_IGATE_VENDOR_ID 0x0681
169 #define USB_IGATE_IGATE_11M_ID 0x0012 /* I-GATE 11M USB Card */
170
171 #define USB_FUJITSU_VENDOR_ID 0x0BF8
172 #define USB_FUJITSU_E1100_ID 0x1002 /* connect2AIR WLAN E-1100 USB */
173
174 #define USB_2WIRE_VENDOR_ID 0x1630
175 #define USB_2WIRE_WIRELESS_ID 0xff81 /* 2Wire Wireless USB adapter */
176
177
178 #define EZUSB_REQUEST_FW_TRANS 0xA0
179 #define EZUSB_REQUEST_TRIGER 0xAA
180 #define EZUSB_REQUEST_TRIG_AC 0xAC
181 #define EZUSB_CPUCS_REG 0x7F92
182
183 #define EZUSB_RID_TX 0x0700
184 #define EZUSB_RID_RX 0x0701
185 #define EZUSB_RID_INIT1 0x0702
186 #define EZUSB_RID_ACK 0x0710
187 #define EZUSB_RID_READ_PDA 0x0800
188 #define EZUSB_RID_PROG_INIT 0x0852
189 #define EZUSB_RID_PROG_SET_ADDR 0x0853
190 #define EZUSB_RID_PROG_BYTES 0x0854
191 #define EZUSB_RID_PROG_END 0x0855
192 #define EZUSB_RID_DOCMD 0x0860
193
194 /* Recognize info frames */
195 #define EZUSB_IS_INFO(id) ((id >= 0xF000) && (id <= 0xF2FF))
196
197 #define EZUSB_MAGIC 0x0210
198
199 #define EZUSB_FRAME_DATA 1
200 #define EZUSB_FRAME_CONTROL 2
201
202 #define DEF_TIMEOUT (3 * HZ)
203
204 #define BULK_BUF_SIZE 2048
205
206 #define MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet))
207
208 #define FW_BUF_SIZE 64
209 #define FW_VAR_OFFSET_PTR 0x359
210 #define FW_VAR_VALUE 0
211 #define FW_HOLE_START 0x100
212 #define FW_HOLE_END 0x300
213
214 struct ezusb_packet {
215 __le16 magic; /* 0x0210 */
216 u8 req_reply_count;
217 u8 ans_reply_count;
218 __le16 frame_type; /* 0x01 for data frames, 0x02 otherwise */
219 __le16 size; /* transport size */
220 __le16 crc; /* CRC up to here */
221 __le16 hermes_len;
222 __le16 hermes_rid;
223 u8 data[0];
224 } __packed;
225
226 /* Table of devices that work or may work with this driver */
227 static struct usb_device_id ezusb_table[] = {
228 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_WL215_ID)},
229 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_HP_WL215_ID)},
230 {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_W200_ID)},
231 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11_ID)},
232 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_WR_ID)},
233 {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_ID)},
234 {USB_DEVICE(USB_LUCENT_VENDOR_ID, USB_LUCENT_ORINOCO_ID)},
235 {USB_DEVICE(USB_AVAYA8_VENDOR_ID, USB_AVAYA_WIRELESS_ID)},
236 {USB_DEVICE(USB_AVAYAE_VENDOR_ID, USB_AVAYA_WIRELESS_ID)},
237 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0801_ID)},
238 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0802_ID)},
239 {USB_DEVICE(USB_ELSA_VENDOR_ID, USB_ELSA_AIRLANCER_ID)},
240 {USB_DEVICE(USB_LEGEND_VENDOR_ID, USB_LEGEND_JOYNET_ID)},
241 {USB_DEVICE_VER(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U1_ID,
242 0, 0)},
243 {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U2_ID)},
244 {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2003U_ID)},
245 {USB_DEVICE(USB_IGATE_VENDOR_ID, USB_IGATE_IGATE_11M_ID)},
246 {USB_DEVICE(USB_FUJITSU_VENDOR_ID, USB_FUJITSU_E1100_ID)},
247 {USB_DEVICE(USB_2WIRE_VENDOR_ID, USB_2WIRE_WIRELESS_ID)},
248 {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_REBRANDED_ID)},
249 {} /* Terminating entry */
250 };
251
252 MODULE_DEVICE_TABLE(usb, ezusb_table);
253
254 /* Structure to hold all of our device specific stuff */
255 struct ezusb_priv {
256 struct usb_device *udev;
257 struct net_device *dev;
258 struct mutex mtx;
259 spinlock_t req_lock;
260 struct list_head req_pending;
261 struct list_head req_active;
262 spinlock_t reply_count_lock;
263 u16 hermes_reg_fake[0x40];
264 u8 *bap_buf;
265 struct urb *read_urb;
266 int read_pipe;
267 int write_pipe;
268 u8 reply_count;
269 };
270
271 enum ezusb_state {
272 EZUSB_CTX_START,
273 EZUSB_CTX_QUEUED,
274 EZUSB_CTX_REQ_SUBMITTED,
275 EZUSB_CTX_REQ_COMPLETE,
276 EZUSB_CTX_RESP_RECEIVED,
277 EZUSB_CTX_REQ_TIMEOUT,
278 EZUSB_CTX_REQ_FAILED,
279 EZUSB_CTX_RESP_TIMEOUT,
280 EZUSB_CTX_REQSUBMIT_FAIL,
281 EZUSB_CTX_COMPLETE,
282 };
283
284 struct request_context {
285 struct list_head list;
286 atomic_t refcount;
287 struct completion done; /* Signals that CTX is dead */
288 int killed;
289 struct urb *outurb; /* OUT for req pkt */
290 struct ezusb_priv *upriv;
291 struct ezusb_packet *buf;
292 int buf_length;
293 struct timer_list timer; /* Timeout handling */
294 enum ezusb_state state; /* Current state */
295 /* the RID that we will wait for */
296 u16 out_rid;
297 u16 in_rid;
298 };
299
300
301 /* Forward declarations */
302 static void ezusb_ctx_complete(struct request_context *ctx);
303 static void ezusb_req_queue_run(struct ezusb_priv *upriv);
304 static void ezusb_bulk_in_callback(struct urb *urb);
305
306 static inline u8 ezusb_reply_inc(u8 count)
307 {
308 if (count < 0x7F)
309 return count + 1;
310 else
311 return 1;
312 }
313
314 static void ezusb_request_context_put(struct request_context *ctx)
315 {
316 if (!atomic_dec_and_test(&ctx->refcount))
317 return;
318
319 WARN_ON(!ctx->done.done);
320 BUG_ON(ctx->outurb->status == -EINPROGRESS);
321 BUG_ON(timer_pending(&ctx->timer));
322 usb_free_urb(ctx->outurb);
323 kfree(ctx->buf);
324 kfree(ctx);
325 }
326
327 static inline void ezusb_mod_timer(struct ezusb_priv *upriv,
328 struct timer_list *timer,
329 unsigned long expire)
330 {
331 if (!upriv->udev)
332 return;
333 mod_timer(timer, expire);
334 }
335
336 static void ezusb_request_timerfn(u_long _ctx)
337 {
338 struct request_context *ctx = (void *) _ctx;
339
340 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
341 if (usb_unlink_urb(ctx->outurb) == -EINPROGRESS) {
342 ctx->state = EZUSB_CTX_REQ_TIMEOUT;
343 } else {
344 ctx->state = EZUSB_CTX_RESP_TIMEOUT;
345 dbg("couldn't unlink");
346 atomic_inc(&ctx->refcount);
347 ctx->killed = 1;
348 ezusb_ctx_complete(ctx);
349 ezusb_request_context_put(ctx);
350 }
351 };
352
353 static struct request_context *ezusb_alloc_ctx(struct ezusb_priv *upriv,
354 u16 out_rid, u16 in_rid)
355 {
356 struct request_context *ctx;
357
358 ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC);
359 if (!ctx)
360 return NULL;
361
362 ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC);
363 if (!ctx->buf) {
364 kfree(ctx);
365 return NULL;
366 }
367 ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC);
368 if (!ctx->outurb) {
369 kfree(ctx->buf);
370 kfree(ctx);
371 return NULL;
372 }
373
374 ctx->upriv = upriv;
375 ctx->state = EZUSB_CTX_START;
376 ctx->out_rid = out_rid;
377 ctx->in_rid = in_rid;
378
379 atomic_set(&ctx->refcount, 1);
380 init_completion(&ctx->done);
381
382 init_timer(&ctx->timer);
383 ctx->timer.function = ezusb_request_timerfn;
384 ctx->timer.data = (u_long) ctx;
385 return ctx;
386 }
387
388
389 /* Hopefully the real complete_all will soon be exported, in the mean
390 * while this should work. */
391 static inline void ezusb_complete_all(struct completion *comp)
392 {
393 complete(comp);
394 complete(comp);
395 complete(comp);
396 complete(comp);
397 }
398
399 static void ezusb_ctx_complete(struct request_context *ctx)
400 {
401 struct ezusb_priv *upriv = ctx->upriv;
402 unsigned long flags;
403
404 spin_lock_irqsave(&upriv->req_lock, flags);
405
406 list_del_init(&ctx->list);
407 if (upriv->udev) {
408 spin_unlock_irqrestore(&upriv->req_lock, flags);
409 ezusb_req_queue_run(upriv);
410 spin_lock_irqsave(&upriv->req_lock, flags);
411 }
412
413 switch (ctx->state) {
414 case EZUSB_CTX_COMPLETE:
415 case EZUSB_CTX_REQSUBMIT_FAIL:
416 case EZUSB_CTX_REQ_FAILED:
417 case EZUSB_CTX_REQ_TIMEOUT:
418 case EZUSB_CTX_RESP_TIMEOUT:
419 spin_unlock_irqrestore(&upriv->req_lock, flags);
420
421 if ((ctx->out_rid == EZUSB_RID_TX) && upriv->dev) {
422 struct net_device *dev = upriv->dev;
423 struct orinoco_private *priv = ndev_priv(dev);
424 struct net_device_stats *stats = &priv->stats;
425
426 if (ctx->state != EZUSB_CTX_COMPLETE)
427 stats->tx_errors++;
428 else
429 stats->tx_packets++;
430
431 netif_wake_queue(dev);
432 }
433 ezusb_complete_all(&ctx->done);
434 ezusb_request_context_put(ctx);
435 break;
436
437 default:
438 spin_unlock_irqrestore(&upriv->req_lock, flags);
439 if (!upriv->udev) {
440 /* This is normal, as all request contexts get flushed
441 * when the device is disconnected */
442 err("Called, CTX not terminating, but device gone");
443 ezusb_complete_all(&ctx->done);
444 ezusb_request_context_put(ctx);
445 break;
446 }
447
448 err("Called, CTX not in terminating state.");
449 /* Things are really bad if this happens. Just leak
450 * the CTX because it may still be linked to the
451 * queue or the OUT urb may still be active.
452 * Just leaking at least prevents an Oops or Panic.
453 */
454 break;
455 }
456 }
457
458 /**
459 * ezusb_req_queue_run:
460 * Description:
461 * Note: Only one active CTX at any one time, because there's no
462 * other (reliable) way to match the response URB to the correct
463 * CTX.
464 **/
465 static void ezusb_req_queue_run(struct ezusb_priv *upriv)
466 {
467 unsigned long flags;
468 struct request_context *ctx;
469 int result;
470
471 spin_lock_irqsave(&upriv->req_lock, flags);
472
473 if (!list_empty(&upriv->req_active))
474 goto unlock;
475
476 if (list_empty(&upriv->req_pending))
477 goto unlock;
478
479 ctx =
480 list_entry(upriv->req_pending.next, struct request_context,
481 list);
482
483 if (!ctx->upriv->udev)
484 goto unlock;
485
486 /* We need to split this off to avoid a race condition */
487 list_move_tail(&ctx->list, &upriv->req_active);
488
489 if (ctx->state == EZUSB_CTX_QUEUED) {
490 atomic_inc(&ctx->refcount);
491 result = usb_submit_urb(ctx->outurb, GFP_ATOMIC);
492 if (result) {
493 ctx->state = EZUSB_CTX_REQSUBMIT_FAIL;
494
495 spin_unlock_irqrestore(&upriv->req_lock, flags);
496
497 err("Fatal, failed to submit command urb."
498 " error=%d\n", result);
499
500 ezusb_ctx_complete(ctx);
501 ezusb_request_context_put(ctx);
502 goto done;
503 }
504
505 ctx->state = EZUSB_CTX_REQ_SUBMITTED;
506 ezusb_mod_timer(ctx->upriv, &ctx->timer,
507 jiffies + DEF_TIMEOUT);
508 }
509
510 unlock:
511 spin_unlock_irqrestore(&upriv->req_lock, flags);
512
513 done:
514 return;
515 }
516
517 static void ezusb_req_enqueue_run(struct ezusb_priv *upriv,
518 struct request_context *ctx)
519 {
520 unsigned long flags;
521
522 spin_lock_irqsave(&upriv->req_lock, flags);
523
524 if (!ctx->upriv->udev) {
525 spin_unlock_irqrestore(&upriv->req_lock, flags);
526 goto done;
527 }
528 atomic_inc(&ctx->refcount);
529 list_add_tail(&ctx->list, &upriv->req_pending);
530 spin_unlock_irqrestore(&upriv->req_lock, flags);
531
532 ctx->state = EZUSB_CTX_QUEUED;
533 ezusb_req_queue_run(upriv);
534
535 done:
536 return;
537 }
538
539 static void ezusb_request_out_callback(struct urb *urb)
540 {
541 unsigned long flags;
542 enum ezusb_state state;
543 struct request_context *ctx = urb->context;
544 struct ezusb_priv *upriv = ctx->upriv;
545
546 spin_lock_irqsave(&upriv->req_lock, flags);
547
548 del_timer(&ctx->timer);
549
550 if (ctx->killed) {
551 spin_unlock_irqrestore(&upriv->req_lock, flags);
552 pr_warning("interrupt called with dead ctx");
553 goto out;
554 }
555
556 state = ctx->state;
557
558 if (urb->status == 0) {
559 switch (state) {
560 case EZUSB_CTX_REQ_SUBMITTED:
561 if (ctx->in_rid) {
562 ctx->state = EZUSB_CTX_REQ_COMPLETE;
563 /* reply URB still pending */
564 ezusb_mod_timer(upriv, &ctx->timer,
565 jiffies + DEF_TIMEOUT);
566 spin_unlock_irqrestore(&upriv->req_lock,
567 flags);
568 break;
569 }
570 /* fall through */
571 case EZUSB_CTX_RESP_RECEIVED:
572 /* IN already received before this OUT-ACK */
573 ctx->state = EZUSB_CTX_COMPLETE;
574 spin_unlock_irqrestore(&upriv->req_lock, flags);
575 ezusb_ctx_complete(ctx);
576 break;
577
578 default:
579 spin_unlock_irqrestore(&upriv->req_lock, flags);
580 err("Unexpected state(0x%x, %d) in OUT URB",
581 state, urb->status);
582 break;
583 }
584 } else {
585 /* If someone cancels the OUT URB then its status
586 * should be either -ECONNRESET or -ENOENT.
587 */
588 switch (state) {
589 case EZUSB_CTX_REQ_SUBMITTED:
590 case EZUSB_CTX_RESP_RECEIVED:
591 ctx->state = EZUSB_CTX_REQ_FAILED;
592 /* fall through */
593
594 case EZUSB_CTX_REQ_FAILED:
595 case EZUSB_CTX_REQ_TIMEOUT:
596 spin_unlock_irqrestore(&upriv->req_lock, flags);
597
598 ezusb_ctx_complete(ctx);
599 break;
600
601 default:
602 spin_unlock_irqrestore(&upriv->req_lock, flags);
603
604 err("Unexpected state(0x%x, %d) in OUT URB",
605 state, urb->status);
606 break;
607 }
608 }
609 out:
610 ezusb_request_context_put(ctx);
611 }
612
613 static void ezusb_request_in_callback(struct ezusb_priv *upriv,
614 struct urb *urb)
615 {
616 struct ezusb_packet *ans = urb->transfer_buffer;
617 struct request_context *ctx = NULL;
618 enum ezusb_state state;
619 unsigned long flags;
620
621 /* Find the CTX on the active queue that requested this URB */
622 spin_lock_irqsave(&upriv->req_lock, flags);
623 if (upriv->udev) {
624 struct list_head *item;
625
626 list_for_each(item, &upriv->req_active) {
627 struct request_context *c;
628 int reply_count;
629
630 c = list_entry(item, struct request_context, list);
631 reply_count =
632 ezusb_reply_inc(c->buf->req_reply_count);
633 if ((ans->ans_reply_count == reply_count)
634 && (le16_to_cpu(ans->hermes_rid) == c->in_rid)) {
635 ctx = c;
636 break;
637 }
638 dbg("Skipped (0x%x/0x%x) (%d/%d)",
639 le16_to_cpu(ans->hermes_rid),
640 c->in_rid, ans->ans_reply_count, reply_count);
641 }
642 }
643
644 if (ctx == NULL) {
645 spin_unlock_irqrestore(&upriv->req_lock, flags);
646 err("%s: got unexpected RID: 0x%04X", __func__,
647 le16_to_cpu(ans->hermes_rid));
648 ezusb_req_queue_run(upriv);
649 return;
650 }
651
652 /* The data we want is in the in buffer, exchange */
653 urb->transfer_buffer = ctx->buf;
654 ctx->buf = (void *) ans;
655 ctx->buf_length = urb->actual_length;
656
657 state = ctx->state;
658 switch (state) {
659 case EZUSB_CTX_REQ_SUBMITTED:
660 /* We have received our response URB before
661 * our request has been acknowledged. Do NOT
662 * destroy our CTX yet, because our OUT URB
663 * is still alive ...
664 */
665 ctx->state = EZUSB_CTX_RESP_RECEIVED;
666 spin_unlock_irqrestore(&upriv->req_lock, flags);
667
668 /* Let the machine continue running. */
669 break;
670
671 case EZUSB_CTX_REQ_COMPLETE:
672 /* This is the usual path: our request
673 * has already been acknowledged, and
674 * we have now received the reply.
675 */
676 ctx->state = EZUSB_CTX_COMPLETE;
677
678 /* Stop the intimer */
679 del_timer(&ctx->timer);
680 spin_unlock_irqrestore(&upriv->req_lock, flags);
681
682 /* Call the completion handler */
683 ezusb_ctx_complete(ctx);
684 break;
685
686 default:
687 spin_unlock_irqrestore(&upriv->req_lock, flags);
688
689 pr_warning("Matched IN URB, unexpected context state(0x%x)",
690 state);
691 /* Throw this CTX away and try submitting another */
692 del_timer(&ctx->timer);
693 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
694 usb_unlink_urb(ctx->outurb);
695 ezusb_req_queue_run(upriv);
696 break;
697 } /* switch */
698 }
699
700
701 static void ezusb_req_ctx_wait(struct ezusb_priv *upriv,
702 struct request_context *ctx)
703 {
704 switch (ctx->state) {
705 case EZUSB_CTX_QUEUED:
706 case EZUSB_CTX_REQ_SUBMITTED:
707 case EZUSB_CTX_REQ_COMPLETE:
708 case EZUSB_CTX_RESP_RECEIVED:
709 if (in_softirq()) {
710 /* If we get called from a timer, timeout timers don't
711 * get the chance to run themselves. So we make sure
712 * that we don't sleep for ever */
713 int msecs = DEF_TIMEOUT * (1000 / HZ);
714 while (!ctx->done.done && msecs--)
715 udelay(1000);
716 } else {
717 wait_event_interruptible(ctx->done.wait,
718 ctx->done.done);
719 }
720 break;
721 default:
722 /* Done or failed - nothing to wait for */
723 break;
724 }
725 }
726
727 static inline u16 build_crc(struct ezusb_packet *data)
728 {
729 u16 crc = 0;
730 u8 *bytes = (u8 *)data;
731 int i;
732
733 for (i = 0; i < 8; i++)
734 crc = (crc << 1) + bytes[i];
735
736 return crc;
737 }
738
739 /**
740 * ezusb_fill_req:
741 *
742 * if data == NULL and length > 0 the data is assumed to be already in
743 * the target buffer and only the header is filled.
744 *
745 */
746 static int ezusb_fill_req(struct ezusb_packet *req, u16 length, u16 rid,
747 const void *data, u16 frame_type, u8 reply_count)
748 {
749 int total_size = sizeof(*req) + length;
750
751 BUG_ON(total_size > BULK_BUF_SIZE);
752
753 req->magic = cpu_to_le16(EZUSB_MAGIC);
754 req->req_reply_count = reply_count;
755 req->ans_reply_count = 0;
756 req->frame_type = cpu_to_le16(frame_type);
757 req->size = cpu_to_le16(length + 4);
758 req->crc = cpu_to_le16(build_crc(req));
759 req->hermes_len = cpu_to_le16(HERMES_BYTES_TO_RECLEN(length));
760 req->hermes_rid = cpu_to_le16(rid);
761 if (data)
762 memcpy(req->data, data, length);
763 return total_size;
764 }
765
766 static int ezusb_submit_in_urb(struct ezusb_priv *upriv)
767 {
768 int retval = 0;
769 void *cur_buf = upriv->read_urb->transfer_buffer;
770
771 if (upriv->read_urb->status == -EINPROGRESS) {
772 dbg("urb busy, not resubmiting");
773 retval = -EBUSY;
774 goto exit;
775 }
776 usb_fill_bulk_urb(upriv->read_urb, upriv->udev, upriv->read_pipe,
777 cur_buf, BULK_BUF_SIZE,
778 ezusb_bulk_in_callback, upriv);
779 upriv->read_urb->transfer_flags = 0;
780 retval = usb_submit_urb(upriv->read_urb, GFP_ATOMIC);
781 if (retval)
782 err("%s submit failed %d", __func__, retval);
783
784 exit:
785 return retval;
786 }
787
788 static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset)
789 {
790 u8 res_val = reset; /* avoid argument promotion */
791
792 if (!upriv->udev) {
793 err("%s: !upriv->udev", __func__);
794 return -EFAULT;
795 }
796 return usb_control_msg(upriv->udev,
797 usb_sndctrlpipe(upriv->udev, 0),
798 EZUSB_REQUEST_FW_TRANS,
799 USB_TYPE_VENDOR | USB_RECIP_DEVICE |
800 USB_DIR_OUT, EZUSB_CPUCS_REG, 0, &res_val,
801 sizeof(res_val), DEF_TIMEOUT);
802 }
803
804 static int ezusb_firmware_download(struct ezusb_priv *upriv,
805 struct ez_usb_fw *fw)
806 {
807 u8 fw_buffer[FW_BUF_SIZE];
808 int retval, addr;
809 int variant_offset;
810
811 /*
812 * This byte is 1 and should be replaced with 0. The offset is
813 * 0x10AD in version 0.0.6. The byte in question should follow
814 * the end of the code pointed to by the jump in the beginning
815 * of the firmware. Also, it is read by code located at 0x358.
816 */
817 variant_offset = be16_to_cpup((__be16 *) &fw->code[FW_VAR_OFFSET_PTR]);
818 if (variant_offset >= fw->size) {
819 printk(KERN_ERR PFX "Invalid firmware variant offset: "
820 "0x%04x\n", variant_offset);
821 retval = -EINVAL;
822 goto fail;
823 }
824
825 retval = ezusb_8051_cpucs(upriv, 1);
826 if (retval < 0)
827 goto fail;
828 for (addr = 0; addr < fw->size; addr += FW_BUF_SIZE) {
829 /* 0x100-0x300 should be left alone, it contains card
830 * specific data, like USB enumeration information */
831 if ((addr >= FW_HOLE_START) && (addr < FW_HOLE_END))
832 continue;
833
834 memcpy(fw_buffer, &fw->code[addr], FW_BUF_SIZE);
835 if (variant_offset >= addr &&
836 variant_offset < addr + FW_BUF_SIZE) {
837 dbg("Patching card_variant byte at 0x%04X",
838 variant_offset);
839 fw_buffer[variant_offset - addr] = FW_VAR_VALUE;
840 }
841 retval = usb_control_msg(upriv->udev,
842 usb_sndctrlpipe(upriv->udev, 0),
843 EZUSB_REQUEST_FW_TRANS,
844 USB_TYPE_VENDOR | USB_RECIP_DEVICE
845 | USB_DIR_OUT,
846 addr, 0x0,
847 fw_buffer, FW_BUF_SIZE,
848 DEF_TIMEOUT);
849
850 if (retval < 0)
851 goto fail;
852 }
853 retval = ezusb_8051_cpucs(upriv, 0);
854 if (retval < 0)
855 goto fail;
856
857 goto exit;
858 fail:
859 printk(KERN_ERR PFX "Firmware download failed, error %d\n",
860 retval);
861 exit:
862 return retval;
863 }
864
865 static int ezusb_access_ltv(struct ezusb_priv *upriv,
866 struct request_context *ctx,
867 u16 length, const void *data, u16 frame_type,
868 void *ans_buff, int ans_size, u16 *ans_length)
869 {
870 int req_size;
871 int retval = 0;
872 enum ezusb_state state;
873
874 BUG_ON(in_irq());
875
876 if (!upriv->udev) {
877 dbg("Device disconnected");
878 return -ENODEV;
879 }
880
881 if (upriv->read_urb->status != -EINPROGRESS)
882 err("%s: in urb not pending", __func__);
883
884 /* protect upriv->reply_count, guarantee sequential numbers */
885 spin_lock_bh(&upriv->reply_count_lock);
886 req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data,
887 frame_type, upriv->reply_count);
888 usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe,
889 ctx->buf, req_size,
890 ezusb_request_out_callback, ctx);
891
892 if (ctx->in_rid)
893 upriv->reply_count = ezusb_reply_inc(upriv->reply_count);
894
895 ezusb_req_enqueue_run(upriv, ctx);
896
897 spin_unlock_bh(&upriv->reply_count_lock);
898
899 if (ctx->in_rid)
900 ezusb_req_ctx_wait(upriv, ctx);
901
902 state = ctx->state;
903 switch (state) {
904 case EZUSB_CTX_COMPLETE:
905 retval = ctx->outurb->status;
906 break;
907
908 case EZUSB_CTX_QUEUED:
909 case EZUSB_CTX_REQ_SUBMITTED:
910 if (!ctx->in_rid)
911 break;
912 default:
913 err("%s: Unexpected context state %d", __func__,
914 state);
915 /* fall though */
916 case EZUSB_CTX_REQ_TIMEOUT:
917 case EZUSB_CTX_REQ_FAILED:
918 case EZUSB_CTX_RESP_TIMEOUT:
919 case EZUSB_CTX_REQSUBMIT_FAIL:
920 printk(KERN_ERR PFX "Access failed, resetting (state %d,"
921 " reply_count %d)\n", state, upriv->reply_count);
922 upriv->reply_count = 0;
923 if (state == EZUSB_CTX_REQ_TIMEOUT
924 || state == EZUSB_CTX_RESP_TIMEOUT) {
925 printk(KERN_ERR PFX "ctx timed out\n");
926 retval = -ETIMEDOUT;
927 } else {
928 printk(KERN_ERR PFX "ctx failed\n");
929 retval = -EFAULT;
930 }
931 goto exit;
932 break;
933 }
934 if (ctx->in_rid) {
935 struct ezusb_packet *ans = ctx->buf;
936 int exp_len;
937
938 if (ans->hermes_len != 0)
939 exp_len = le16_to_cpu(ans->hermes_len) * 2 + 12;
940 else
941 exp_len = 14;
942
943 if (exp_len != ctx->buf_length) {
944 err("%s: length mismatch for RID 0x%04x: "
945 "expected %d, got %d", __func__,
946 ctx->in_rid, exp_len, ctx->buf_length);
947 retval = -EIO;
948 goto exit;
949 }
950
951 if (ans_buff)
952 memcpy(ans_buff, ans->data,
953 min_t(int, exp_len, ans_size));
954 if (ans_length)
955 *ans_length = le16_to_cpu(ans->hermes_len);
956 }
957 exit:
958 ezusb_request_context_put(ctx);
959 return retval;
960 }
961
962 static int ezusb_write_ltv(struct hermes *hw, int bap, u16 rid,
963 u16 length, const void *data)
964 {
965 struct ezusb_priv *upriv = hw->priv;
966 u16 frame_type;
967 struct request_context *ctx;
968
969 if (length == 0)
970 return -EINVAL;
971
972 length = HERMES_RECLEN_TO_BYTES(length);
973
974 /* On memory mapped devices HERMES_RID_CNFGROUPADDRESSES can be
975 * set to be empty, but the USB bridge doesn't like it */
976 if (length == 0)
977 return 0;
978
979 ctx = ezusb_alloc_ctx(upriv, rid, EZUSB_RID_ACK);
980 if (!ctx)
981 return -ENOMEM;
982
983 if (rid == EZUSB_RID_TX)
984 frame_type = EZUSB_FRAME_DATA;
985 else
986 frame_type = EZUSB_FRAME_CONTROL;
987
988 return ezusb_access_ltv(upriv, ctx, length, data, frame_type,
989 NULL, 0, NULL);
990 }
991
992 static int ezusb_read_ltv(struct hermes *hw, int bap, u16 rid,
993 unsigned bufsize, u16 *length, void *buf)
994 {
995 struct ezusb_priv *upriv = hw->priv;
996 struct request_context *ctx;
997
998 if ((bufsize < 0) || (bufsize % 2))
999 return -EINVAL;
1000
1001 ctx = ezusb_alloc_ctx(upriv, rid, rid);
1002 if (!ctx)
1003 return -ENOMEM;
1004
1005 return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL,
1006 buf, bufsize, length);
1007 }
1008
1009 static int ezusb_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1,
1010 u16 parm2, struct hermes_response *resp)
1011 {
1012 struct ezusb_priv *upriv = hw->priv;
1013 struct request_context *ctx;
1014
1015 __le16 data[4] = {
1016 cpu_to_le16(cmd),
1017 cpu_to_le16(parm0),
1018 cpu_to_le16(parm1),
1019 cpu_to_le16(parm2),
1020 };
1021 dbg("0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X",
1022 cmd, parm0, parm1, parm2);
1023 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK);
1024 if (!ctx)
1025 return -ENOMEM;
1026
1027 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1028 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1029 }
1030
1031 static int ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0,
1032 struct hermes_response *resp)
1033 {
1034 struct ezusb_priv *upriv = hw->priv;
1035 struct request_context *ctx;
1036
1037 __le16 data[4] = {
1038 cpu_to_le16(cmd),
1039 cpu_to_le16(parm0),
1040 0,
1041 0,
1042 };
1043 dbg("0x%04X, parm0 0x%04X", cmd, parm0);
1044 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK);
1045 if (!ctx)
1046 return -ENOMEM;
1047
1048 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1049 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1050 }
1051
1052 static int ezusb_bap_pread(struct hermes *hw, int bap,
1053 void *buf, int len, u16 id, u16 offset)
1054 {
1055 struct ezusb_priv *upriv = hw->priv;
1056 struct ezusb_packet *ans = (void *) upriv->read_urb->transfer_buffer;
1057 int actual_length = upriv->read_urb->actual_length;
1058
1059 if (id == EZUSB_RID_RX) {
1060 if ((sizeof(*ans) + offset + len) > actual_length) {
1061 printk(KERN_ERR PFX "BAP read beyond buffer end "
1062 "in rx frame\n");
1063 return -EINVAL;
1064 }
1065 memcpy(buf, ans->data + offset, len);
1066 return 0;
1067 }
1068
1069 if (EZUSB_IS_INFO(id)) {
1070 /* Include 4 bytes for length/type */
1071 if ((sizeof(*ans) + offset + len - 4) > actual_length) {
1072 printk(KERN_ERR PFX "BAP read beyond buffer end "
1073 "in info frame\n");
1074 return -EFAULT;
1075 }
1076 memcpy(buf, ans->data + offset - 4, len);
1077 } else {
1078 printk(KERN_ERR PFX "Unexpected fid 0x%04x\n", id);
1079 return -EINVAL;
1080 }
1081
1082 return 0;
1083 }
1084
1085 static int ezusb_read_pda(struct hermes *hw, __le16 *pda,
1086 u32 pda_addr, u16 pda_len)
1087 {
1088 struct ezusb_priv *upriv = hw->priv;
1089 struct request_context *ctx;
1090 __le16 data[] = {
1091 cpu_to_le16(pda_addr & 0xffff),
1092 cpu_to_le16(pda_len - 4)
1093 };
1094 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_READ_PDA, EZUSB_RID_READ_PDA);
1095 if (!ctx)
1096 return -ENOMEM;
1097
1098 /* wl_lkm does not include PDA size in the PDA area.
1099 * We will pad the information into pda, so other routines
1100 * don't have to be modified */
1101 pda[0] = cpu_to_le16(pda_len - 2);
1102 /* Includes CFG_PROD_DATA but not itself */
1103 pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */
1104
1105 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1106 EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4,
1107 NULL);
1108 }
1109
1110 static int ezusb_program_init(struct hermes *hw, u32 entry_point)
1111 {
1112 struct ezusb_priv *upriv = hw->priv;
1113 struct request_context *ctx;
1114 __le32 data = cpu_to_le32(entry_point);
1115
1116 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_INIT, EZUSB_RID_ACK);
1117 if (!ctx)
1118 return -ENOMEM;
1119
1120 return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1121 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1122 }
1123
1124 static int ezusb_program_end(struct hermes *hw)
1125 {
1126 struct ezusb_priv *upriv = hw->priv;
1127 struct request_context *ctx;
1128
1129 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_END, EZUSB_RID_ACK);
1130 if (!ctx)
1131 return -ENOMEM;
1132
1133 return ezusb_access_ltv(upriv, ctx, 0, NULL,
1134 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1135 }
1136
1137 static int ezusb_program_bytes(struct hermes *hw, const char *buf,
1138 u32 addr, u32 len)
1139 {
1140 struct ezusb_priv *upriv = hw->priv;
1141 struct request_context *ctx;
1142 __le32 data = cpu_to_le32(addr);
1143 int err;
1144
1145 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_SET_ADDR, EZUSB_RID_ACK);
1146 if (!ctx)
1147 return -ENOMEM;
1148
1149 err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
1150 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1151 if (err)
1152 return err;
1153
1154 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_BYTES, EZUSB_RID_ACK);
1155 if (!ctx)
1156 return -ENOMEM;
1157
1158 return ezusb_access_ltv(upriv, ctx, len, buf,
1159 EZUSB_FRAME_CONTROL, NULL, 0, NULL);
1160 }
1161
1162 static int ezusb_program(struct hermes *hw, const char *buf,
1163 u32 addr, u32 len)
1164 {
1165 u32 ch_addr;
1166 u32 ch_len;
1167 int err = 0;
1168
1169 /* We can only send 2048 bytes out of the bulk xmit at a time,
1170 * so we have to split any programming into chunks of <2048
1171 * bytes. */
1172
1173 ch_len = (len < MAX_DL_SIZE) ? len : MAX_DL_SIZE;
1174 ch_addr = addr;
1175
1176 while (ch_addr < (addr + len)) {
1177 pr_debug("Programming subblock of length %d "
1178 "to address 0x%08x. Data @ %p\n",
1179 ch_len, ch_addr, &buf[ch_addr - addr]);
1180
1181 err = ezusb_program_bytes(hw, &buf[ch_addr - addr],
1182 ch_addr, ch_len);
1183 if (err)
1184 break;
1185
1186 ch_addr += ch_len;
1187 ch_len = ((addr + len - ch_addr) < MAX_DL_SIZE) ?
1188 (addr + len - ch_addr) : MAX_DL_SIZE;
1189 }
1190
1191 return err;
1192 }
1193
1194 static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev)
1195 {
1196 struct orinoco_private *priv = ndev_priv(dev);
1197 struct net_device_stats *stats = &priv->stats;
1198 struct ezusb_priv *upriv = priv->card;
1199 u8 mic[MICHAEL_MIC_LEN + 1];
1200 int err = 0;
1201 int tx_control;
1202 unsigned long flags;
1203 struct request_context *ctx;
1204 u8 *buf;
1205 int tx_size;
1206
1207 if (!netif_running(dev)) {
1208 printk(KERN_ERR "%s: Tx on stopped device!\n",
1209 dev->name);
1210 return NETDEV_TX_BUSY;
1211 }
1212
1213 if (netif_queue_stopped(dev)) {
1214 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
1215 dev->name);
1216 return NETDEV_TX_BUSY;
1217 }
1218
1219 if (orinoco_lock(priv, &flags) != 0) {
1220 printk(KERN_ERR
1221 "%s: ezusb_xmit() called while hw_unavailable\n",
1222 dev->name);
1223 return NETDEV_TX_BUSY;
1224 }
1225
1226 if (!netif_carrier_ok(dev) ||
1227 (priv->iw_mode == NL80211_IFTYPE_MONITOR)) {
1228 /* Oops, the firmware hasn't established a connection,
1229 silently drop the packet (this seems to be the
1230 safest approach). */
1231 goto drop;
1232 }
1233
1234 /* Check packet length */
1235 if (skb->len < ETH_HLEN)
1236 goto drop;
1237
1238 ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0);
1239 if (!ctx)
1240 goto busy;
1241
1242 memset(ctx->buf, 0, BULK_BUF_SIZE);
1243 buf = ctx->buf->data;
1244
1245 tx_control = 0;
1246
1247 err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control,
1248 &mic[0]);
1249 if (err)
1250 goto drop;
1251
1252 {
1253 __le16 *tx_cntl = (__le16 *)buf;
1254 *tx_cntl = cpu_to_le16(tx_control);
1255 buf += sizeof(*tx_cntl);
1256 }
1257
1258 memcpy(buf, skb->data, skb->len);
1259 buf += skb->len;
1260
1261 if (tx_control & HERMES_TXCTRL_MIC) {
1262 u8 *m = mic;
1263 /* Mic has been offset so it can be copied to an even
1264 * address. We're copying eveything anyway, so we
1265 * don't need to copy that first byte. */
1266 if (skb->len % 2)
1267 m++;
1268 memcpy(buf, m, MICHAEL_MIC_LEN);
1269 buf += MICHAEL_MIC_LEN;
1270 }
1271
1272 /* Finally, we actually initiate the send */
1273 netif_stop_queue(dev);
1274
1275 /* The card may behave better if we send evenly sized usb transfers */
1276 tx_size = ALIGN(buf - ctx->buf->data, 2);
1277
1278 err = ezusb_access_ltv(upriv, ctx, tx_size, NULL,
1279 EZUSB_FRAME_DATA, NULL, 0, NULL);
1280
1281 if (err) {
1282 netif_start_queue(dev);
1283 if (net_ratelimit())
1284 printk(KERN_ERR "%s: Error %d transmitting packet\n",
1285 dev->name, err);
1286 goto busy;
1287 }
1288
1289 dev->trans_start = jiffies;
1290 stats->tx_bytes += skb->len;
1291 goto ok;
1292
1293 drop:
1294 stats->tx_errors++;
1295 stats->tx_dropped++;
1296
1297 ok:
1298 orinoco_unlock(priv, &flags);
1299 dev_kfree_skb(skb);
1300 return NETDEV_TX_OK;
1301
1302 busy:
1303 orinoco_unlock(priv, &flags);
1304 return NETDEV_TX_BUSY;
1305 }
1306
1307 static int ezusb_allocate(struct hermes *hw, u16 size, u16 *fid)
1308 {
1309 *fid = EZUSB_RID_TX;
1310 return 0;
1311 }
1312
1313
1314 static int ezusb_hard_reset(struct orinoco_private *priv)
1315 {
1316 struct ezusb_priv *upriv = priv->card;
1317 int retval = ezusb_8051_cpucs(upriv, 1);
1318
1319 if (retval < 0) {
1320 err("Failed to reset");
1321 return retval;
1322 }
1323
1324 retval = ezusb_8051_cpucs(upriv, 0);
1325 if (retval < 0) {
1326 err("Failed to unreset");
1327 return retval;
1328 }
1329
1330 dbg("sending control message");
1331 retval = usb_control_msg(upriv->udev,
1332 usb_sndctrlpipe(upriv->udev, 0),
1333 EZUSB_REQUEST_TRIGER,
1334 USB_TYPE_VENDOR | USB_RECIP_DEVICE |
1335 USB_DIR_OUT, 0x0, 0x0, NULL, 0,
1336 DEF_TIMEOUT);
1337 if (retval < 0) {
1338 err("EZUSB_REQUEST_TRIGER failed retval %d", retval);
1339 return retval;
1340 }
1341 #if 0
1342 dbg("Sending EZUSB_REQUEST_TRIG_AC");
1343 retval = usb_control_msg(upriv->udev,
1344 usb_sndctrlpipe(upriv->udev, 0),
1345 EZUSB_REQUEST_TRIG_AC,
1346 USB_TYPE_VENDOR | USB_RECIP_DEVICE |
1347 USB_DIR_OUT, 0x00FA, 0x0, NULL, 0,
1348 DEF_TIMEOUT);
1349 if (retval < 0) {
1350 err("EZUSB_REQUEST_TRIG_AC failed retval %d", retval);
1351 return retval;
1352 }
1353 #endif
1354
1355 return 0;
1356 }
1357
1358
1359 static int ezusb_init(struct hermes *hw)
1360 {
1361 struct ezusb_priv *upriv = hw->priv;
1362 int retval;
1363
1364 BUG_ON(in_interrupt());
1365 BUG_ON(!upriv);
1366
1367 upriv->reply_count = 0;
1368 /* Write the MAGIC number on the simulated registers to keep
1369 * orinoco.c happy */
1370 hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC);
1371 hermes_write_regn(hw, RXFID, EZUSB_RID_RX);
1372
1373 usb_kill_urb(upriv->read_urb);
1374 ezusb_submit_in_urb(upriv);
1375
1376 retval = ezusb_write_ltv(hw, 0, EZUSB_RID_INIT1,
1377 HERMES_BYTES_TO_RECLEN(2), "\x10\x00");
1378 if (retval < 0) {
1379 printk(KERN_ERR PFX "EZUSB_RID_INIT1 error %d\n", retval);
1380 return retval;
1381 }
1382
1383 retval = ezusb_docmd_wait(hw, HERMES_CMD_INIT, 0, NULL);
1384 if (retval < 0) {
1385 printk(KERN_ERR PFX "HERMES_CMD_INIT error %d\n", retval);
1386 return retval;
1387 }
1388
1389 return 0;
1390 }
1391
1392 static void ezusb_bulk_in_callback(struct urb *urb)
1393 {
1394 struct ezusb_priv *upriv = (struct ezusb_priv *) urb->context;
1395 struct ezusb_packet *ans = urb->transfer_buffer;
1396 u16 crc;
1397 u16 hermes_rid;
1398
1399 if (upriv->udev == NULL) {
1400 dbg("disconnected");
1401 return;
1402 }
1403
1404 if (urb->status == -ETIMEDOUT) {
1405 /* When a device gets unplugged we get this every time
1406 * we resubmit, flooding the logs. Since we don't use
1407 * USB timeouts, it shouldn't happen any other time*/
1408 pr_warning("%s: urb timed out, not resubmiting", __func__);
1409 return;
1410 }
1411 if (urb->status == -ECONNABORTED) {
1412 pr_warning("%s: connection abort, resubmiting urb",
1413 __func__);
1414 goto resubmit;
1415 }
1416 if ((urb->status == -EILSEQ)
1417 || (urb->status == -ENOENT)
1418 || (urb->status == -ECONNRESET)) {
1419 dbg("status %d, not resubmiting", urb->status);
1420 return;
1421 }
1422 if (urb->status)
1423 dbg("status: %d length: %d",
1424 urb->status, urb->actual_length);
1425 if (urb->actual_length < sizeof(*ans)) {
1426 err("%s: short read, ignoring", __func__);
1427 goto resubmit;
1428 }
1429 crc = build_crc(ans);
1430 if (le16_to_cpu(ans->crc) != crc) {
1431 err("CRC error, ignoring packet");
1432 goto resubmit;
1433 }
1434
1435 hermes_rid = le16_to_cpu(ans->hermes_rid);
1436 if ((hermes_rid != EZUSB_RID_RX) && !EZUSB_IS_INFO(hermes_rid)) {
1437 ezusb_request_in_callback(upriv, urb);
1438 } else if (upriv->dev) {
1439 struct net_device *dev = upriv->dev;
1440 struct orinoco_private *priv = ndev_priv(dev);
1441 struct hermes *hw = &priv->hw;
1442
1443 if (hermes_rid == EZUSB_RID_RX) {
1444 __orinoco_ev_rx(dev, hw);
1445 } else {
1446 hermes_write_regn(hw, INFOFID,
1447 le16_to_cpu(ans->hermes_rid));
1448 __orinoco_ev_info(dev, hw);
1449 }
1450 }
1451
1452 resubmit:
1453 if (upriv->udev)
1454 ezusb_submit_in_urb(upriv);
1455 }
1456
1457 static inline void ezusb_delete(struct ezusb_priv *upriv)
1458 {
1459 struct net_device *dev;
1460 struct list_head *item;
1461 struct list_head *tmp_item;
1462 unsigned long flags;
1463
1464 BUG_ON(in_interrupt());
1465 BUG_ON(!upriv);
1466
1467 dev = upriv->dev;
1468 mutex_lock(&upriv->mtx);
1469
1470 upriv->udev = NULL; /* No timer will be rearmed from here */
1471
1472 usb_kill_urb(upriv->read_urb);
1473
1474 spin_lock_irqsave(&upriv->req_lock, flags);
1475 list_for_each_safe(item, tmp_item, &upriv->req_active) {
1476 struct request_context *ctx;
1477 int err;
1478
1479 ctx = list_entry(item, struct request_context, list);
1480 atomic_inc(&ctx->refcount);
1481
1482 ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
1483 err = usb_unlink_urb(ctx->outurb);
1484
1485 spin_unlock_irqrestore(&upriv->req_lock, flags);
1486 if (err == -EINPROGRESS)
1487 wait_for_completion(&ctx->done);
1488
1489 del_timer_sync(&ctx->timer);
1490 /* FIXME: there is an slight chance for the irq handler to
1491 * be running */
1492 if (!list_empty(&ctx->list))
1493 ezusb_ctx_complete(ctx);
1494
1495 ezusb_request_context_put(ctx);
1496 spin_lock_irqsave(&upriv->req_lock, flags);
1497 }
1498 spin_unlock_irqrestore(&upriv->req_lock, flags);
1499
1500 list_for_each_safe(item, tmp_item, &upriv->req_pending)
1501 ezusb_ctx_complete(list_entry(item,
1502 struct request_context, list));
1503
1504 if (upriv->read_urb && upriv->read_urb->status == -EINPROGRESS)
1505 printk(KERN_ERR PFX "Some URB in progress\n");
1506
1507 mutex_unlock(&upriv->mtx);
1508
1509 if (upriv->read_urb) {
1510 kfree(upriv->read_urb->transfer_buffer);
1511 usb_free_urb(upriv->read_urb);
1512 }
1513 kfree(upriv->bap_buf);
1514 if (upriv->dev) {
1515 struct orinoco_private *priv = ndev_priv(upriv->dev);
1516 orinoco_if_del(priv);
1517 free_orinocodev(priv);
1518 }
1519 }
1520
1521 static void ezusb_lock_irqsave(spinlock_t *lock,
1522 unsigned long *flags) __acquires(lock)
1523 {
1524 spin_lock_bh(lock);
1525 }
1526
1527 static void ezusb_unlock_irqrestore(spinlock_t *lock,
1528 unsigned long *flags) __releases(lock)
1529 {
1530 spin_unlock_bh(lock);
1531 }
1532
1533 static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock)
1534 {
1535 spin_lock_bh(lock);
1536 }
1537
1538 static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock)
1539 {
1540 spin_unlock_bh(lock);
1541 }
1542
1543 static const struct hermes_ops ezusb_ops = {
1544 .init = ezusb_init,
1545 .cmd_wait = ezusb_docmd_wait,
1546 .init_cmd_wait = ezusb_doicmd_wait,
1547 .allocate = ezusb_allocate,
1548 .read_ltv = ezusb_read_ltv,
1549 .write_ltv = ezusb_write_ltv,
1550 .bap_pread = ezusb_bap_pread,
1551 .read_pda = ezusb_read_pda,
1552 .program_init = ezusb_program_init,
1553 .program_end = ezusb_program_end,
1554 .program = ezusb_program,
1555 .lock_irqsave = ezusb_lock_irqsave,
1556 .unlock_irqrestore = ezusb_unlock_irqrestore,
1557 .lock_irq = ezusb_lock_irq,
1558 .unlock_irq = ezusb_unlock_irq,
1559 };
1560
1561 static const struct net_device_ops ezusb_netdev_ops = {
1562 .ndo_open = orinoco_open,
1563 .ndo_stop = orinoco_stop,
1564 .ndo_start_xmit = ezusb_xmit,
1565 .ndo_set_multicast_list = orinoco_set_multicast_list,
1566 .ndo_change_mtu = orinoco_change_mtu,
1567 .ndo_set_mac_address = eth_mac_addr,
1568 .ndo_validate_addr = eth_validate_addr,
1569 .ndo_tx_timeout = orinoco_tx_timeout,
1570 .ndo_get_stats = orinoco_get_stats,
1571 };
1572
1573 static int ezusb_probe(struct usb_interface *interface,
1574 const struct usb_device_id *id)
1575 {
1576 struct usb_device *udev = interface_to_usbdev(interface);
1577 struct orinoco_private *priv;
1578 struct hermes *hw;
1579 struct ezusb_priv *upriv = NULL;
1580 struct usb_interface_descriptor *iface_desc;
1581 struct usb_endpoint_descriptor *ep;
1582 const struct firmware *fw_entry;
1583 int retval = 0;
1584 int i;
1585
1586 priv = alloc_orinocodev(sizeof(*upriv), &udev->dev,
1587 ezusb_hard_reset, NULL);
1588 if (!priv) {
1589 err("Couldn't allocate orinocodev");
1590 goto exit;
1591 }
1592
1593 hw = &priv->hw;
1594
1595 upriv = priv->card;
1596
1597 mutex_init(&upriv->mtx);
1598 spin_lock_init(&upriv->reply_count_lock);
1599
1600 spin_lock_init(&upriv->req_lock);
1601 INIT_LIST_HEAD(&upriv->req_pending);
1602 INIT_LIST_HEAD(&upriv->req_active);
1603
1604 upriv->udev = udev;
1605
1606 hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake;
1607 hw->reg_spacing = HERMES_16BIT_REGSPACING;
1608 hw->priv = upriv;
1609 hw->ops = &ezusb_ops;
1610
1611 /* set up the endpoint information */
1612 /* check out the endpoints */
1613
1614 iface_desc = &interface->altsetting[0].desc;
1615 for (i = 0; i < iface_desc->bNumEndpoints; ++i) {
1616 ep = &interface->altsetting[0].endpoint[i].desc;
1617
1618 if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1619 == USB_DIR_IN) &&
1620 ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1621 == USB_ENDPOINT_XFER_BULK)) {
1622 /* we found a bulk in endpoint */
1623 if (upriv->read_urb != NULL) {
1624 pr_warning("Found a second bulk in ep, ignored");
1625 continue;
1626 }
1627
1628 upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL);
1629 if (!upriv->read_urb) {
1630 err("No free urbs available");
1631 goto error;
1632 }
1633 if (le16_to_cpu(ep->wMaxPacketSize) != 64)
1634 pr_warning("bulk in: wMaxPacketSize!= 64");
1635 if (ep->bEndpointAddress != (2 | USB_DIR_IN))
1636 pr_warning("bulk in: bEndpointAddress: %d",
1637 ep->bEndpointAddress);
1638 upriv->read_pipe = usb_rcvbulkpipe(udev,
1639 ep->
1640 bEndpointAddress);
1641 upriv->read_urb->transfer_buffer =
1642 kmalloc(BULK_BUF_SIZE, GFP_KERNEL);
1643 if (!upriv->read_urb->transfer_buffer) {
1644 err("Couldn't allocate IN buffer");
1645 goto error;
1646 }
1647 }
1648
1649 if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1650 == USB_DIR_OUT) &&
1651 ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1652 == USB_ENDPOINT_XFER_BULK)) {
1653 /* we found a bulk out endpoint */
1654 if (upriv->bap_buf != NULL) {
1655 pr_warning("Found a second bulk out ep, ignored");
1656 continue;
1657 }
1658
1659 if (le16_to_cpu(ep->wMaxPacketSize) != 64)
1660 pr_warning("bulk out: wMaxPacketSize != 64");
1661 if (ep->bEndpointAddress != 2)
1662 pr_warning("bulk out: bEndpointAddress: %d",
1663 ep->bEndpointAddress);
1664 upriv->write_pipe = usb_sndbulkpipe(udev,
1665 ep->
1666 bEndpointAddress);
1667 upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL);
1668 if (!upriv->bap_buf) {
1669 err("Couldn't allocate bulk_out_buffer");
1670 goto error;
1671 }
1672 }
1673 }
1674 if (!upriv->bap_buf || !upriv->read_urb) {
1675 err("Didn't find the required bulk endpoints");
1676 goto error;
1677 }
1678
1679 if (request_firmware(&fw_entry, "orinoco_ezusb_fw",
1680 &interface->dev) == 0) {
1681 firmware.size = fw_entry->size;
1682 firmware.code = fw_entry->data;
1683 }
1684 if (firmware.size && firmware.code) {
1685 ezusb_firmware_download(upriv, &firmware);
1686 } else {
1687 err("No firmware to download");
1688 goto error;
1689 }
1690
1691 if (ezusb_hard_reset(priv) < 0) {
1692 err("Cannot reset the device");
1693 goto error;
1694 }
1695
1696 /* If the firmware is already downloaded orinoco.c will call
1697 * ezusb_init but if the firmware is not already there, that will make
1698 * the kernel very unstable, so we try initializing here and quit in
1699 * case of error */
1700 if (ezusb_init(hw) < 0) {
1701 err("Couldn't initialize the device");
1702 err("Firmware may not be downloaded or may be wrong.");
1703 goto error;
1704 }
1705
1706 /* Initialise the main driver */
1707 if (orinoco_init(priv) != 0) {
1708 err("orinoco_init() failed\n");
1709 goto error;
1710 }
1711
1712 if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) {
1713 upriv->dev = NULL;
1714 err("%s: orinoco_if_add() failed", __func__);
1715 goto error;
1716 }
1717 upriv->dev = priv->ndev;
1718
1719 goto exit;
1720
1721 error:
1722 ezusb_delete(upriv);
1723 if (upriv->dev) {
1724 /* upriv->dev was 0, so ezusb_delete() didn't free it */
1725 free_orinocodev(priv);
1726 }
1727 upriv = NULL;
1728 retval = -EFAULT;
1729 exit:
1730 if (fw_entry) {
1731 firmware.code = NULL;
1732 firmware.size = 0;
1733 release_firmware(fw_entry);
1734 }
1735 usb_set_intfdata(interface, upriv);
1736 return retval;
1737 }
1738
1739
1740 static void ezusb_disconnect(struct usb_interface *intf)
1741 {
1742 struct ezusb_priv *upriv = usb_get_intfdata(intf);
1743 usb_set_intfdata(intf, NULL);
1744 ezusb_delete(upriv);
1745 printk(KERN_INFO PFX "Disconnected\n");
1746 }
1747
1748
1749 /* usb specific object needed to register this driver with the usb subsystem */
1750 static struct usb_driver orinoco_driver = {
1751 .name = DRIVER_NAME,
1752 .probe = ezusb_probe,
1753 .disconnect = ezusb_disconnect,
1754 .id_table = ezusb_table,
1755 };
1756
1757 /* Can't be declared "const" or the whole __initdata section will
1758 * become const */
1759 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
1760 " (Manuel Estrada Sainz)";
1761
1762 static int __init ezusb_module_init(void)
1763 {
1764 int err;
1765
1766 printk(KERN_DEBUG "%s\n", version);
1767
1768 /* register this driver with the USB subsystem */
1769 err = usb_register(&orinoco_driver);
1770 if (err < 0) {
1771 printk(KERN_ERR PFX "usb_register failed, error %d\n",
1772 err);
1773 return err;
1774 }
1775
1776 return 0;
1777 }
1778
1779 static void __exit ezusb_module_exit(void)
1780 {
1781 /* deregister this driver with the USB subsystem */
1782 usb_deregister(&orinoco_driver);
1783 }
1784
1785
1786 module_init(ezusb_module_init);
1787 module_exit(ezusb_module_exit);
1788
1789 MODULE_AUTHOR("Manuel Estrada Sainz");
1790 MODULE_DESCRIPTION("Driver for Orinoco wireless LAN cards using EZUSB bridge");
1791 MODULE_LICENSE("Dual MPL/GPL");
linux-next