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9afac70a DK |
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 | ||
bac6fafd | 70 | #include "mic.h" |
9afac70a DK |
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 | } __attribute__ ((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 | |
07cefe7a DK |
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 | |
9afac70a DK |
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 | ||
07cefe7a DK |
207 | #define MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet)) |
208 | ||
9afac70a DK |
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 | } __attribute__ ((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 = kmalloc(sizeof(*ctx), GFP_ATOMIC); | |
360 | if (!ctx) | |
361 | return NULL; | |
362 | ||
363 | memset(ctx, 0, sizeof(*ctx)); | |
364 | ||
365 | ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC); | |
366 | if (!ctx->buf) { | |
367 | kfree(ctx); | |
368 | return NULL; | |
369 | } | |
370 | ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC); | |
371 | if (!ctx->outurb) { | |
372 | kfree(ctx->buf); | |
373 | kfree(ctx); | |
374 | return NULL; | |
375 | } | |
376 | ||
377 | ctx->upriv = upriv; | |
378 | ctx->state = EZUSB_CTX_START; | |
379 | ctx->out_rid = out_rid; | |
380 | ctx->in_rid = in_rid; | |
381 | ||
382 | atomic_set(&ctx->refcount, 1); | |
383 | init_completion(&ctx->done); | |
384 | ||
385 | init_timer(&ctx->timer); | |
386 | ctx->timer.function = ezusb_request_timerfn; | |
387 | ctx->timer.data = (u_long) ctx; | |
388 | return ctx; | |
389 | } | |
390 | ||
391 | ||
392 | /* Hopefully the real complete_all will soon be exported, in the mean | |
393 | * while this should work. */ | |
394 | static inline void ezusb_complete_all(struct completion *comp) | |
395 | { | |
396 | complete(comp); | |
397 | complete(comp); | |
398 | complete(comp); | |
399 | complete(comp); | |
400 | } | |
401 | ||
402 | static void ezusb_ctx_complete(struct request_context *ctx) | |
403 | { | |
404 | struct ezusb_priv *upriv = ctx->upriv; | |
405 | unsigned long flags; | |
406 | ||
407 | spin_lock_irqsave(&upriv->req_lock, flags); | |
408 | ||
409 | list_del_init(&ctx->list); | |
410 | if (upriv->udev) { | |
411 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
412 | ezusb_req_queue_run(upriv); | |
413 | spin_lock_irqsave(&upriv->req_lock, flags); | |
414 | } | |
415 | ||
416 | switch (ctx->state) { | |
417 | case EZUSB_CTX_COMPLETE: | |
418 | case EZUSB_CTX_REQSUBMIT_FAIL: | |
419 | case EZUSB_CTX_REQ_FAILED: | |
420 | case EZUSB_CTX_REQ_TIMEOUT: | |
421 | case EZUSB_CTX_RESP_TIMEOUT: | |
422 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
423 | ||
424 | if ((ctx->out_rid == EZUSB_RID_TX) && upriv->dev) { | |
425 | struct net_device *dev = upriv->dev; | |
426 | struct orinoco_private *priv = ndev_priv(dev); | |
427 | struct net_device_stats *stats = &priv->stats; | |
428 | ||
429 | if (ctx->state != EZUSB_CTX_COMPLETE) | |
430 | stats->tx_errors++; | |
431 | else | |
432 | stats->tx_packets++; | |
433 | ||
434 | netif_wake_queue(dev); | |
435 | } | |
436 | ezusb_complete_all(&ctx->done); | |
437 | ezusb_request_context_put(ctx); | |
438 | break; | |
439 | ||
440 | default: | |
441 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
442 | if (!upriv->udev) { | |
443 | /* This is normal, as all request contexts get flushed | |
444 | * when the device is disconnected */ | |
445 | err("Called, CTX not terminating, but device gone"); | |
446 | ezusb_complete_all(&ctx->done); | |
447 | ezusb_request_context_put(ctx); | |
448 | break; | |
449 | } | |
450 | ||
451 | err("Called, CTX not in terminating state."); | |
452 | /* Things are really bad if this happens. Just leak | |
453 | * the CTX because it may still be linked to the | |
454 | * queue or the OUT urb may still be active. | |
455 | * Just leaking at least prevents an Oops or Panic. | |
456 | */ | |
457 | break; | |
458 | } | |
459 | } | |
460 | ||
461 | /** | |
462 | * ezusb_req_queue_run: | |
463 | * Description: | |
464 | * Note: Only one active CTX at any one time, because there's no | |
465 | * other (reliable) way to match the response URB to the correct | |
466 | * CTX. | |
467 | **/ | |
468 | static void ezusb_req_queue_run(struct ezusb_priv *upriv) | |
469 | { | |
470 | unsigned long flags; | |
471 | struct request_context *ctx; | |
472 | int result; | |
473 | ||
474 | spin_lock_irqsave(&upriv->req_lock, flags); | |
475 | ||
476 | if (!list_empty(&upriv->req_active)) | |
477 | goto unlock; | |
478 | ||
479 | if (list_empty(&upriv->req_pending)) | |
480 | goto unlock; | |
481 | ||
482 | ctx = | |
483 | list_entry(upriv->req_pending.next, struct request_context, | |
484 | list); | |
485 | ||
486 | if (!ctx->upriv->udev) | |
487 | goto unlock; | |
488 | ||
489 | /* We need to split this off to avoid a race condition */ | |
490 | list_move_tail(&ctx->list, &upriv->req_active); | |
491 | ||
492 | if (ctx->state == EZUSB_CTX_QUEUED) { | |
493 | atomic_inc(&ctx->refcount); | |
494 | result = usb_submit_urb(ctx->outurb, GFP_ATOMIC); | |
495 | if (result) { | |
496 | ctx->state = EZUSB_CTX_REQSUBMIT_FAIL; | |
497 | ||
498 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
499 | ||
500 | err("Fatal, failed to submit command urb." | |
501 | " error=%d\n", result); | |
502 | ||
503 | ezusb_ctx_complete(ctx); | |
504 | ezusb_request_context_put(ctx); | |
505 | goto done; | |
506 | } | |
507 | ||
508 | ctx->state = EZUSB_CTX_REQ_SUBMITTED; | |
509 | ezusb_mod_timer(ctx->upriv, &ctx->timer, | |
510 | jiffies + DEF_TIMEOUT); | |
511 | } | |
512 | ||
513 | unlock: | |
514 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
515 | ||
516 | done: | |
517 | return; | |
518 | } | |
519 | ||
520 | static void ezusb_req_enqueue_run(struct ezusb_priv *upriv, | |
521 | struct request_context *ctx) | |
522 | { | |
523 | unsigned long flags; | |
524 | ||
525 | spin_lock_irqsave(&upriv->req_lock, flags); | |
526 | ||
527 | if (!ctx->upriv->udev) { | |
528 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
529 | goto done; | |
530 | } | |
531 | atomic_inc(&ctx->refcount); | |
532 | list_add_tail(&ctx->list, &upriv->req_pending); | |
533 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
534 | ||
535 | ctx->state = EZUSB_CTX_QUEUED; | |
536 | ezusb_req_queue_run(upriv); | |
537 | ||
538 | done: | |
539 | return; | |
540 | } | |
541 | ||
542 | static void ezusb_request_out_callback(struct urb *urb) | |
543 | { | |
544 | unsigned long flags; | |
545 | enum ezusb_state state; | |
546 | struct request_context *ctx = urb->context; | |
547 | struct ezusb_priv *upriv = ctx->upriv; | |
548 | ||
549 | spin_lock_irqsave(&upriv->req_lock, flags); | |
550 | ||
551 | del_timer(&ctx->timer); | |
552 | ||
553 | if (ctx->killed) { | |
554 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
555 | pr_warning("interrupt called with dead ctx"); | |
556 | goto out; | |
557 | } | |
558 | ||
559 | state = ctx->state; | |
560 | ||
561 | if (urb->status == 0) { | |
562 | switch (state) { | |
563 | case EZUSB_CTX_REQ_SUBMITTED: | |
564 | if (ctx->in_rid) { | |
565 | ctx->state = EZUSB_CTX_REQ_COMPLETE; | |
566 | /* reply URB still pending */ | |
567 | ezusb_mod_timer(upriv, &ctx->timer, | |
568 | jiffies + DEF_TIMEOUT); | |
569 | spin_unlock_irqrestore(&upriv->req_lock, | |
570 | flags); | |
571 | break; | |
572 | } | |
573 | /* fall through */ | |
574 | case EZUSB_CTX_RESP_RECEIVED: | |
575 | /* IN already received before this OUT-ACK */ | |
576 | ctx->state = EZUSB_CTX_COMPLETE; | |
577 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
578 | ezusb_ctx_complete(ctx); | |
579 | break; | |
580 | ||
581 | default: | |
582 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
583 | err("Unexpected state(0x%x, %d) in OUT URB", | |
584 | state, urb->status); | |
585 | break; | |
586 | } | |
587 | } else { | |
588 | /* If someone cancels the OUT URB then its status | |
589 | * should be either -ECONNRESET or -ENOENT. | |
590 | */ | |
591 | switch (state) { | |
592 | case EZUSB_CTX_REQ_SUBMITTED: | |
593 | case EZUSB_CTX_RESP_RECEIVED: | |
594 | ctx->state = EZUSB_CTX_REQ_FAILED; | |
595 | /* fall through */ | |
596 | ||
597 | case EZUSB_CTX_REQ_FAILED: | |
598 | case EZUSB_CTX_REQ_TIMEOUT: | |
599 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
600 | ||
601 | ezusb_ctx_complete(ctx); | |
602 | break; | |
603 | ||
604 | default: | |
605 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
606 | ||
607 | err("Unexpected state(0x%x, %d) in OUT URB", | |
608 | state, urb->status); | |
609 | break; | |
610 | } | |
611 | } | |
612 | out: | |
613 | ezusb_request_context_put(ctx); | |
614 | } | |
615 | ||
616 | static void ezusb_request_in_callback(struct ezusb_priv *upriv, | |
617 | struct urb *urb) | |
618 | { | |
619 | struct ezusb_packet *ans = urb->transfer_buffer; | |
620 | struct request_context *ctx = NULL; | |
621 | enum ezusb_state state; | |
622 | unsigned long flags; | |
623 | ||
624 | /* Find the CTX on the active queue that requested this URB */ | |
625 | spin_lock_irqsave(&upriv->req_lock, flags); | |
626 | if (upriv->udev) { | |
627 | struct list_head *item; | |
628 | ||
629 | list_for_each(item, &upriv->req_active) { | |
630 | struct request_context *c; | |
631 | int reply_count; | |
632 | ||
633 | c = list_entry(item, struct request_context, list); | |
634 | reply_count = | |
635 | ezusb_reply_inc(c->buf->req_reply_count); | |
636 | if ((ans->ans_reply_count == reply_count) | |
637 | && (le16_to_cpu(ans->hermes_rid) == c->in_rid)) { | |
638 | ctx = c; | |
639 | break; | |
640 | } | |
641 | dbg("Skipped (0x%x/0x%x) (%d/%d)", | |
642 | le16_to_cpu(ans->hermes_rid), | |
643 | c->in_rid, ans->ans_reply_count, reply_count); | |
644 | } | |
645 | } | |
646 | ||
647 | if (ctx == NULL) { | |
648 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
649 | err("%s: got unexpected RID: 0x%04X", __func__, | |
650 | le16_to_cpu(ans->hermes_rid)); | |
651 | ezusb_req_queue_run(upriv); | |
652 | return; | |
653 | } | |
654 | ||
655 | /* The data we want is in the in buffer, exchange */ | |
656 | urb->transfer_buffer = ctx->buf; | |
657 | ctx->buf = (void *) ans; | |
658 | ctx->buf_length = urb->actual_length; | |
659 | ||
660 | state = ctx->state; | |
661 | switch (state) { | |
662 | case EZUSB_CTX_REQ_SUBMITTED: | |
663 | /* We have received our response URB before | |
664 | * our request has been acknowledged. Do NOT | |
665 | * destroy our CTX yet, because our OUT URB | |
666 | * is still alive ... | |
667 | */ | |
668 | ctx->state = EZUSB_CTX_RESP_RECEIVED; | |
669 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
670 | ||
671 | /* Let the machine continue running. */ | |
672 | break; | |
673 | ||
674 | case EZUSB_CTX_REQ_COMPLETE: | |
675 | /* This is the usual path: our request | |
676 | * has already been acknowledged, and | |
677 | * we have now received the reply. | |
678 | */ | |
679 | ctx->state = EZUSB_CTX_COMPLETE; | |
680 | ||
681 | /* Stop the intimer */ | |
682 | del_timer(&ctx->timer); | |
683 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
684 | ||
685 | /* Call the completion handler */ | |
686 | ezusb_ctx_complete(ctx); | |
687 | break; | |
688 | ||
689 | default: | |
690 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
691 | ||
692 | pr_warning("Matched IN URB, unexpected context state(0x%x)", | |
693 | state); | |
694 | /* Throw this CTX away and try submitting another */ | |
695 | del_timer(&ctx->timer); | |
696 | ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; | |
697 | usb_unlink_urb(ctx->outurb); | |
698 | ezusb_req_queue_run(upriv); | |
699 | break; | |
700 | } /* switch */ | |
701 | } | |
702 | ||
703 | ||
704 | static void ezusb_req_ctx_wait(struct ezusb_priv *upriv, | |
705 | struct request_context *ctx) | |
706 | { | |
707 | switch (ctx->state) { | |
708 | case EZUSB_CTX_QUEUED: | |
709 | case EZUSB_CTX_REQ_SUBMITTED: | |
710 | case EZUSB_CTX_REQ_COMPLETE: | |
711 | case EZUSB_CTX_RESP_RECEIVED: | |
fc97431a | 712 | if (in_softirq()) { |
9afac70a DK |
713 | /* If we get called from a timer, timeout timers don't |
714 | * get the chance to run themselves. So we make sure | |
715 | * that we don't sleep for ever */ | |
716 | int msecs = DEF_TIMEOUT * (1000 / HZ); | |
717 | while (!ctx->done.done && msecs--) | |
718 | udelay(1000); | |
719 | } else { | |
720 | wait_event_interruptible(ctx->done.wait, | |
721 | ctx->done.done); | |
722 | } | |
723 | break; | |
724 | default: | |
725 | /* Done or failed - nothing to wait for */ | |
726 | break; | |
727 | } | |
728 | } | |
729 | ||
730 | static inline u16 build_crc(struct ezusb_packet *data) | |
731 | { | |
732 | u16 crc = 0; | |
733 | u8 *bytes = (u8 *)data; | |
734 | int i; | |
735 | ||
736 | for (i = 0; i < 8; i++) | |
737 | crc = (crc << 1) + bytes[i]; | |
738 | ||
739 | return crc; | |
740 | } | |
741 | ||
742 | /** | |
743 | * ezusb_fill_req: | |
744 | * | |
745 | * if data == NULL and length > 0 the data is assumed to be already in | |
746 | * the target buffer and only the header is filled. | |
747 | * | |
748 | */ | |
749 | static int ezusb_fill_req(struct ezusb_packet *req, u16 length, u16 rid, | |
750 | const void *data, u16 frame_type, u8 reply_count) | |
751 | { | |
752 | int total_size = sizeof(*req) + length; | |
753 | ||
754 | BUG_ON(total_size > BULK_BUF_SIZE); | |
755 | ||
756 | req->magic = cpu_to_le16(EZUSB_MAGIC); | |
757 | req->req_reply_count = reply_count; | |
758 | req->ans_reply_count = 0; | |
759 | req->frame_type = cpu_to_le16(frame_type); | |
760 | req->size = cpu_to_le16(length + 4); | |
761 | req->crc = cpu_to_le16(build_crc(req)); | |
762 | req->hermes_len = cpu_to_le16(HERMES_BYTES_TO_RECLEN(length)); | |
763 | req->hermes_rid = cpu_to_le16(rid); | |
764 | if (data) | |
765 | memcpy(req->data, data, length); | |
766 | return total_size; | |
767 | } | |
768 | ||
769 | static int ezusb_submit_in_urb(struct ezusb_priv *upriv) | |
770 | { | |
771 | int retval = 0; | |
772 | void *cur_buf = upriv->read_urb->transfer_buffer; | |
773 | ||
774 | if (upriv->read_urb->status == -EINPROGRESS) { | |
775 | dbg("urb busy, not resubmiting"); | |
776 | retval = -EBUSY; | |
777 | goto exit; | |
778 | } | |
779 | usb_fill_bulk_urb(upriv->read_urb, upriv->udev, upriv->read_pipe, | |
780 | cur_buf, BULK_BUF_SIZE, | |
781 | ezusb_bulk_in_callback, upriv); | |
782 | upriv->read_urb->transfer_flags = 0; | |
783 | retval = usb_submit_urb(upriv->read_urb, GFP_ATOMIC); | |
784 | if (retval) | |
785 | err("%s submit failed %d", __func__, retval); | |
786 | ||
787 | exit: | |
788 | return retval; | |
789 | } | |
790 | ||
791 | static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset) | |
792 | { | |
793 | u8 res_val = reset; /* avoid argument promotion */ | |
794 | ||
795 | if (!upriv->udev) { | |
796 | err("%s: !upriv->udev", __func__); | |
797 | return -EFAULT; | |
798 | } | |
799 | return usb_control_msg(upriv->udev, | |
800 | usb_sndctrlpipe(upriv->udev, 0), | |
801 | EZUSB_REQUEST_FW_TRANS, | |
802 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | | |
803 | USB_DIR_OUT, EZUSB_CPUCS_REG, 0, &res_val, | |
804 | sizeof(res_val), DEF_TIMEOUT); | |
805 | } | |
806 | ||
807 | static int ezusb_firmware_download(struct ezusb_priv *upriv, | |
808 | struct ez_usb_fw *fw) | |
809 | { | |
810 | u8 fw_buffer[FW_BUF_SIZE]; | |
811 | int retval, addr; | |
812 | int variant_offset; | |
813 | ||
814 | /* | |
815 | * This byte is 1 and should be replaced with 0. The offset is | |
816 | * 0x10AD in version 0.0.6. The byte in question should follow | |
817 | * the end of the code pointed to by the jump in the beginning | |
818 | * of the firmware. Also, it is read by code located at 0x358. | |
819 | */ | |
820 | variant_offset = be16_to_cpup((__be16 *) &fw->code[FW_VAR_OFFSET_PTR]); | |
821 | if (variant_offset >= fw->size) { | |
822 | printk(KERN_ERR PFX "Invalid firmware variant offset: " | |
823 | "0x%04x\n", variant_offset); | |
824 | retval = -EINVAL; | |
825 | goto fail; | |
826 | } | |
827 | ||
828 | retval = ezusb_8051_cpucs(upriv, 1); | |
829 | if (retval < 0) | |
830 | goto fail; | |
831 | for (addr = 0; addr < fw->size; addr += FW_BUF_SIZE) { | |
832 | /* 0x100-0x300 should be left alone, it contains card | |
833 | * specific data, like USB enumeration information */ | |
834 | if ((addr >= FW_HOLE_START) && (addr < FW_HOLE_END)) | |
835 | continue; | |
836 | ||
837 | memcpy(fw_buffer, &fw->code[addr], FW_BUF_SIZE); | |
838 | if (variant_offset >= addr && | |
839 | variant_offset < addr + FW_BUF_SIZE) { | |
840 | dbg("Patching card_variant byte at 0x%04X", | |
841 | variant_offset); | |
842 | fw_buffer[variant_offset - addr] = FW_VAR_VALUE; | |
843 | } | |
844 | retval = usb_control_msg(upriv->udev, | |
845 | usb_sndctrlpipe(upriv->udev, 0), | |
846 | EZUSB_REQUEST_FW_TRANS, | |
847 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | |
848 | | USB_DIR_OUT, | |
849 | addr, 0x0, | |
850 | fw_buffer, FW_BUF_SIZE, | |
851 | DEF_TIMEOUT); | |
852 | ||
853 | if (retval < 0) | |
854 | goto fail; | |
855 | } | |
856 | retval = ezusb_8051_cpucs(upriv, 0); | |
857 | if (retval < 0) | |
858 | goto fail; | |
859 | ||
860 | goto exit; | |
861 | fail: | |
862 | printk(KERN_ERR PFX "Firmware download failed, error %d\n", | |
863 | retval); | |
864 | exit: | |
865 | return retval; | |
866 | } | |
867 | ||
868 | static int ezusb_access_ltv(struct ezusb_priv *upriv, | |
869 | struct request_context *ctx, | |
870 | u16 length, const void *data, u16 frame_type, | |
871 | void *ans_buff, int ans_size, u16 *ans_length) | |
872 | { | |
873 | int req_size; | |
874 | int retval = 0; | |
875 | enum ezusb_state state; | |
876 | ||
877 | BUG_ON(in_irq()); | |
878 | ||
879 | if (!upriv->udev) { | |
880 | dbg("Device disconnected"); | |
881 | return -ENODEV; | |
882 | } | |
883 | ||
884 | if (upriv->read_urb->status != -EINPROGRESS) | |
885 | err("%s: in urb not pending", __func__); | |
886 | ||
887 | /* protect upriv->reply_count, guarantee sequential numbers */ | |
888 | spin_lock_bh(&upriv->reply_count_lock); | |
889 | req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data, | |
890 | frame_type, upriv->reply_count); | |
891 | usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe, | |
892 | ctx->buf, req_size, | |
893 | ezusb_request_out_callback, ctx); | |
894 | ||
895 | if (ctx->in_rid) | |
896 | upriv->reply_count = ezusb_reply_inc(upriv->reply_count); | |
897 | ||
898 | ezusb_req_enqueue_run(upriv, ctx); | |
899 | ||
900 | spin_unlock_bh(&upriv->reply_count_lock); | |
901 | ||
902 | if (ctx->in_rid) | |
903 | ezusb_req_ctx_wait(upriv, ctx); | |
904 | ||
905 | state = ctx->state; | |
906 | switch (state) { | |
907 | case EZUSB_CTX_COMPLETE: | |
908 | retval = ctx->outurb->status; | |
909 | break; | |
910 | ||
911 | case EZUSB_CTX_QUEUED: | |
912 | case EZUSB_CTX_REQ_SUBMITTED: | |
913 | if (!ctx->in_rid) | |
914 | break; | |
915 | default: | |
916 | err("%s: Unexpected context state %d", __func__, | |
917 | state); | |
918 | /* fall though */ | |
919 | case EZUSB_CTX_REQ_TIMEOUT: | |
920 | case EZUSB_CTX_REQ_FAILED: | |
921 | case EZUSB_CTX_RESP_TIMEOUT: | |
922 | case EZUSB_CTX_REQSUBMIT_FAIL: | |
923 | printk(KERN_ERR PFX "Access failed, resetting (state %d," | |
924 | " reply_count %d)\n", state, upriv->reply_count); | |
925 | upriv->reply_count = 0; | |
926 | if (state == EZUSB_CTX_REQ_TIMEOUT | |
927 | || state == EZUSB_CTX_RESP_TIMEOUT) { | |
928 | printk(KERN_ERR PFX "ctx timed out\n"); | |
929 | retval = -ETIMEDOUT; | |
930 | } else { | |
931 | printk(KERN_ERR PFX "ctx failed\n"); | |
932 | retval = -EFAULT; | |
933 | } | |
934 | goto exit; | |
935 | break; | |
936 | } | |
937 | if (ctx->in_rid) { | |
938 | struct ezusb_packet *ans = ctx->buf; | |
939 | int exp_len; | |
940 | ||
941 | if (ans->hermes_len != 0) | |
942 | exp_len = le16_to_cpu(ans->hermes_len) * 2 + 12; | |
943 | else | |
944 | exp_len = 14; | |
945 | ||
946 | if (exp_len != ctx->buf_length) { | |
947 | err("%s: length mismatch for RID 0x%04x: " | |
948 | "expected %d, got %d", __func__, | |
949 | ctx->in_rid, exp_len, ctx->buf_length); | |
950 | retval = -EIO; | |
951 | goto exit; | |
952 | } | |
953 | ||
954 | if (ans_buff) | |
955 | memcpy(ans_buff, ans->data, | |
956 | min_t(int, exp_len, ans_size)); | |
957 | if (ans_length) | |
958 | *ans_length = le16_to_cpu(ans->hermes_len); | |
959 | } | |
960 | exit: | |
961 | ezusb_request_context_put(ctx); | |
962 | return retval; | |
963 | } | |
964 | ||
965 | static int ezusb_write_ltv(hermes_t *hw, int bap, u16 rid, | |
966 | u16 length, const void *data) | |
967 | { | |
968 | struct ezusb_priv *upriv = hw->priv; | |
969 | u16 frame_type; | |
970 | struct request_context *ctx; | |
971 | ||
972 | if (length == 0) | |
973 | return -EINVAL; | |
974 | ||
975 | length = HERMES_RECLEN_TO_BYTES(length); | |
976 | ||
977 | /* On memory mapped devices HERMES_RID_CNFGROUPADDRESSES can be | |
978 | * set to be empty, but the USB bridge doesn't like it */ | |
979 | if (length == 0) | |
980 | return 0; | |
981 | ||
982 | ctx = ezusb_alloc_ctx(upriv, rid, EZUSB_RID_ACK); | |
983 | if (!ctx) | |
984 | return -ENOMEM; | |
985 | ||
986 | if (rid == EZUSB_RID_TX) | |
987 | frame_type = EZUSB_FRAME_DATA; | |
988 | else | |
989 | frame_type = EZUSB_FRAME_CONTROL; | |
990 | ||
991 | return ezusb_access_ltv(upriv, ctx, length, data, frame_type, | |
992 | NULL, 0, NULL); | |
993 | } | |
994 | ||
995 | static int ezusb_read_ltv(hermes_t *hw, int bap, u16 rid, | |
996 | unsigned bufsize, u16 *length, void *buf) | |
997 | { | |
998 | struct ezusb_priv *upriv = hw->priv; | |
999 | struct request_context *ctx; | |
1000 | ||
1001 | if ((bufsize < 0) || (bufsize % 2)) | |
1002 | return -EINVAL; | |
1003 | ||
1004 | ctx = ezusb_alloc_ctx(upriv, rid, rid); | |
1005 | if (!ctx) | |
1006 | return -ENOMEM; | |
1007 | ||
1008 | return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL, | |
1009 | buf, bufsize, length); | |
1010 | } | |
1011 | ||
1012 | static int ezusb_doicmd_wait(hermes_t *hw, u16 cmd, u16 parm0, u16 parm1, | |
1013 | u16 parm2, struct hermes_response *resp) | |
1014 | { | |
1015 | struct ezusb_priv *upriv = hw->priv; | |
1016 | struct request_context *ctx; | |
1017 | ||
1018 | __le16 data[4] = { | |
1019 | cpu_to_le16(cmd), | |
1020 | cpu_to_le16(parm0), | |
1021 | cpu_to_le16(parm1), | |
1022 | cpu_to_le16(parm2), | |
1023 | }; | |
1024 | dbg("0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X", | |
1025 | cmd, parm0, parm1, parm2); | |
1026 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); | |
1027 | if (!ctx) | |
1028 | return -ENOMEM; | |
1029 | ||
1030 | return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1031 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1032 | } | |
1033 | ||
1034 | static int ezusb_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0, | |
1035 | struct hermes_response *resp) | |
1036 | { | |
1037 | struct ezusb_priv *upriv = hw->priv; | |
1038 | struct request_context *ctx; | |
1039 | ||
1040 | __le16 data[4] = { | |
1041 | cpu_to_le16(cmd), | |
1042 | cpu_to_le16(parm0), | |
1043 | 0, | |
1044 | 0, | |
1045 | }; | |
1046 | dbg("0x%04X, parm0 0x%04X", cmd, parm0); | |
1047 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); | |
1048 | if (!ctx) | |
1049 | return -ENOMEM; | |
1050 | ||
1051 | return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1052 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1053 | } | |
1054 | ||
1055 | static int ezusb_bap_pread(struct hermes *hw, int bap, | |
1056 | void *buf, int len, u16 id, u16 offset) | |
1057 | { | |
1058 | struct ezusb_priv *upriv = hw->priv; | |
1059 | struct ezusb_packet *ans = (void *) upriv->read_urb->transfer_buffer; | |
1060 | int actual_length = upriv->read_urb->actual_length; | |
1061 | ||
1062 | if (id == EZUSB_RID_RX) { | |
1063 | if ((sizeof(*ans) + offset + len) > actual_length) { | |
1064 | printk(KERN_ERR PFX "BAP read beyond buffer end " | |
1065 | "in rx frame\n"); | |
1066 | return -EINVAL; | |
1067 | } | |
1068 | memcpy(buf, ans->data + offset, len); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | if (EZUSB_IS_INFO(id)) { | |
1073 | /* Include 4 bytes for length/type */ | |
1074 | if ((sizeof(*ans) + offset + len - 4) > actual_length) { | |
1075 | printk(KERN_ERR PFX "BAP read beyond buffer end " | |
1076 | "in info frame\n"); | |
1077 | return -EFAULT; | |
1078 | } | |
1079 | memcpy(buf, ans->data + offset - 4, len); | |
1080 | } else { | |
1081 | printk(KERN_ERR PFX "Unexpected fid 0x%04x\n", id); | |
1082 | return -EINVAL; | |
1083 | } | |
1084 | ||
1085 | return 0; | |
1086 | } | |
1087 | ||
07cefe7a DK |
1088 | static int ezusb_read_pda(struct hermes *hw, __le16 *pda, |
1089 | u32 pda_addr, u16 pda_len) | |
1090 | { | |
1091 | struct ezusb_priv *upriv = hw->priv; | |
1092 | struct request_context *ctx; | |
1093 | __le16 data[] = { | |
1094 | cpu_to_le16(pda_addr & 0xffff), | |
1095 | cpu_to_le16(pda_len - 4) | |
1096 | }; | |
1097 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_READ_PDA, EZUSB_RID_READ_PDA); | |
1098 | if (!ctx) | |
1099 | return -ENOMEM; | |
1100 | ||
1101 | /* wl_lkm does not include PDA size in the PDA area. | |
1102 | * We will pad the information into pda, so other routines | |
1103 | * don't have to be modified */ | |
1104 | pda[0] = cpu_to_le16(pda_len - 2); | |
1105 | /* Includes CFG_PROD_DATA but not itself */ | |
1106 | pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */ | |
1107 | ||
1108 | return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1109 | EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4, | |
1110 | NULL); | |
1111 | } | |
1112 | ||
1113 | static int ezusb_program_init(struct hermes *hw, u32 entry_point) | |
1114 | { | |
1115 | struct ezusb_priv *upriv = hw->priv; | |
1116 | struct request_context *ctx; | |
1117 | __le32 data = cpu_to_le32(entry_point); | |
1118 | ||
1119 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_INIT, EZUSB_RID_ACK); | |
1120 | if (!ctx) | |
1121 | return -ENOMEM; | |
1122 | ||
1123 | return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1124 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1125 | } | |
1126 | ||
1127 | static int ezusb_program_end(struct hermes *hw) | |
1128 | { | |
1129 | struct ezusb_priv *upriv = hw->priv; | |
1130 | struct request_context *ctx; | |
1131 | ||
1132 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_END, EZUSB_RID_ACK); | |
1133 | if (!ctx) | |
1134 | return -ENOMEM; | |
1135 | ||
1136 | return ezusb_access_ltv(upriv, ctx, 0, NULL, | |
1137 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1138 | } | |
1139 | ||
1140 | static int ezusb_program_bytes(struct hermes *hw, const char *buf, | |
1141 | u32 addr, u32 len) | |
1142 | { | |
1143 | struct ezusb_priv *upriv = hw->priv; | |
1144 | struct request_context *ctx; | |
1145 | __le32 data = cpu_to_le32(addr); | |
1146 | int err; | |
1147 | ||
1148 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_SET_ADDR, EZUSB_RID_ACK); | |
1149 | if (!ctx) | |
1150 | return -ENOMEM; | |
1151 | ||
1152 | err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1153 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1154 | if (err) | |
1155 | return err; | |
1156 | ||
1157 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_BYTES, EZUSB_RID_ACK); | |
1158 | if (!ctx) | |
1159 | return -ENOMEM; | |
1160 | ||
1161 | return ezusb_access_ltv(upriv, ctx, len, buf, | |
1162 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1163 | } | |
1164 | ||
1165 | static int ezusb_program(struct hermes *hw, const char *buf, | |
1166 | u32 addr, u32 len) | |
1167 | { | |
1168 | u32 ch_addr; | |
1169 | u32 ch_len; | |
1170 | int err = 0; | |
1171 | ||
1172 | /* We can only send 2048 bytes out of the bulk xmit at a time, | |
1173 | * so we have to split any programming into chunks of <2048 | |
1174 | * bytes. */ | |
1175 | ||
1176 | ch_len = (len < MAX_DL_SIZE) ? len : MAX_DL_SIZE; | |
1177 | ch_addr = addr; | |
1178 | ||
1179 | while (ch_addr < (addr + len)) { | |
1180 | pr_debug("Programming subblock of length %d " | |
1181 | "to address 0x%08x. Data @ %p\n", | |
1182 | ch_len, ch_addr, &buf[ch_addr - addr]); | |
1183 | ||
1184 | err = ezusb_program_bytes(hw, &buf[ch_addr - addr], | |
1185 | ch_addr, ch_len); | |
1186 | if (err) | |
1187 | break; | |
1188 | ||
1189 | ch_addr += ch_len; | |
1190 | ch_len = ((addr + len - ch_addr) < MAX_DL_SIZE) ? | |
1191 | (addr + len - ch_addr) : MAX_DL_SIZE; | |
1192 | } | |
1193 | ||
1194 | return err; | |
1195 | } | |
1196 | ||
9afac70a DK |
1197 | static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev) |
1198 | { | |
1199 | struct orinoco_private *priv = ndev_priv(dev); | |
1200 | struct net_device_stats *stats = &priv->stats; | |
1201 | struct ezusb_priv *upriv = priv->card; | |
bac6fafd | 1202 | u8 mic[MICHAEL_MIC_LEN+1]; |
9afac70a | 1203 | int err = 0; |
bac6fafd | 1204 | int tx_control; |
9afac70a DK |
1205 | unsigned long flags; |
1206 | struct request_context *ctx; | |
1207 | u8 *buf; | |
1208 | int tx_size; | |
1209 | ||
1210 | if (!netif_running(dev)) { | |
1211 | printk(KERN_ERR "%s: Tx on stopped device!\n", | |
1212 | dev->name); | |
1213 | return NETDEV_TX_BUSY; | |
1214 | } | |
1215 | ||
1216 | if (netif_queue_stopped(dev)) { | |
1217 | printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", | |
1218 | dev->name); | |
1219 | return NETDEV_TX_BUSY; | |
1220 | } | |
1221 | ||
1222 | if (orinoco_lock(priv, &flags) != 0) { | |
1223 | printk(KERN_ERR | |
bac6fafd | 1224 | "%s: ezusb_xmit() called while hw_unavailable\n", |
9afac70a DK |
1225 | dev->name); |
1226 | return NETDEV_TX_BUSY; | |
1227 | } | |
1228 | ||
1229 | if (!netif_carrier_ok(dev) || | |
1230 | (priv->iw_mode == NL80211_IFTYPE_MONITOR)) { | |
1231 | /* Oops, the firmware hasn't established a connection, | |
1232 | silently drop the packet (this seems to be the | |
1233 | safest approach). */ | |
bac6fafd | 1234 | goto drop; |
9afac70a DK |
1235 | } |
1236 | ||
bac6fafd DK |
1237 | /* Check packet length */ |
1238 | if (skb->len < ETH_HLEN) | |
1239 | goto drop; | |
1240 | ||
9afac70a DK |
1241 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0); |
1242 | if (!ctx) | |
bac6fafd | 1243 | goto busy; |
9afac70a DK |
1244 | |
1245 | memset(ctx->buf, 0, BULK_BUF_SIZE); | |
1246 | buf = ctx->buf->data; | |
1247 | ||
bac6fafd DK |
1248 | tx_control = 0; |
1249 | ||
1250 | err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, | |
1251 | &mic[0]); | |
1252 | if (err) | |
1253 | goto drop; | |
1254 | ||
1255 | { | |
1256 | __le16 *tx_cntl = (__le16 *)buf; | |
1257 | *tx_cntl = cpu_to_le16(tx_control); | |
1258 | buf += sizeof(*tx_cntl); | |
9afac70a DK |
1259 | } |
1260 | ||
bac6fafd DK |
1261 | memcpy(buf, skb->data, skb->len); |
1262 | buf += skb->len; | |
1263 | ||
1264 | if (tx_control & HERMES_TXCTRL_MIC) { | |
1265 | u8 *m = mic; | |
1266 | /* Mic has been offset so it can be copied to an even | |
1267 | * address. We're copying eveything anyway, so we | |
1268 | * don't need to copy that first byte. */ | |
1269 | if (skb->len % 2) | |
1270 | m++; | |
1271 | memcpy(buf, m, MICHAEL_MIC_LEN); | |
1272 | buf += MICHAEL_MIC_LEN; | |
1273 | } | |
9afac70a DK |
1274 | |
1275 | /* Finally, we actually initiate the send */ | |
1276 | netif_stop_queue(dev); | |
1277 | ||
1278 | /* The card may behave better if we send evenly sized usb transfers */ | |
1279 | tx_size = ALIGN(buf - ctx->buf->data, 2); | |
1280 | ||
1281 | err = ezusb_access_ltv(upriv, ctx, tx_size, NULL, | |
1282 | EZUSB_FRAME_DATA, NULL, 0, NULL); | |
1283 | ||
1284 | if (err) { | |
1285 | netif_start_queue(dev); | |
1286 | if (net_ratelimit()) | |
1287 | printk(KERN_ERR "%s: Error %d transmitting packet\n", | |
1288 | dev->name, err); | |
bac6fafd | 1289 | goto busy; |
9afac70a DK |
1290 | } |
1291 | ||
1292 | dev->trans_start = jiffies; | |
bac6fafd DK |
1293 | stats->tx_bytes += skb->len; |
1294 | goto ok; | |
9afac70a | 1295 | |
bac6fafd DK |
1296 | drop: |
1297 | stats->tx_errors++; | |
1298 | stats->tx_dropped++; | |
9afac70a | 1299 | |
bac6fafd DK |
1300 | ok: |
1301 | orinoco_unlock(priv, &flags); | |
9afac70a | 1302 | dev_kfree_skb(skb); |
9afac70a DK |
1303 | return NETDEV_TX_OK; |
1304 | ||
bac6fafd | 1305 | busy: |
9afac70a DK |
1306 | orinoco_unlock(priv, &flags); |
1307 | return NETDEV_TX_BUSY; | |
1308 | } | |
1309 | ||
1310 | static int ezusb_allocate(struct hermes *hw, u16 size, u16 *fid) | |
1311 | { | |
1312 | *fid = EZUSB_RID_TX; | |
1313 | return 0; | |
1314 | } | |
1315 | ||
1316 | ||
1317 | static int ezusb_hard_reset(struct orinoco_private *priv) | |
1318 | { | |
1319 | struct ezusb_priv *upriv = priv->card; | |
1320 | int retval = ezusb_8051_cpucs(upriv, 1); | |
1321 | ||
1322 | if (retval < 0) { | |
1323 | err("Failed to reset"); | |
1324 | return retval; | |
1325 | } | |
1326 | ||
1327 | retval = ezusb_8051_cpucs(upriv, 0); | |
1328 | if (retval < 0) { | |
1329 | err("Failed to unreset"); | |
1330 | return retval; | |
1331 | } | |
1332 | ||
1333 | dbg("sending control message"); | |
1334 | retval = usb_control_msg(upriv->udev, | |
1335 | usb_sndctrlpipe(upriv->udev, 0), | |
1336 | EZUSB_REQUEST_TRIGER, | |
1337 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | | |
1338 | USB_DIR_OUT, 0x0, 0x0, NULL, 0, | |
1339 | DEF_TIMEOUT); | |
1340 | if (retval < 0) { | |
1341 | err("EZUSB_REQUEST_TRIGER failed retval %d", retval); | |
1342 | return retval; | |
1343 | } | |
1344 | #if 0 | |
1345 | dbg("Sending EZUSB_REQUEST_TRIG_AC"); | |
1346 | retval = usb_control_msg(upriv->udev, | |
1347 | usb_sndctrlpipe(upriv->udev, 0), | |
1348 | EZUSB_REQUEST_TRIG_AC, | |
1349 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | | |
1350 | USB_DIR_OUT, 0x00FA, 0x0, NULL, 0, | |
1351 | DEF_TIMEOUT); | |
1352 | if (retval < 0) { | |
1353 | err("EZUSB_REQUEST_TRIG_AC failed retval %d", retval); | |
1354 | return retval; | |
1355 | } | |
1356 | #endif | |
1357 | ||
1358 | return 0; | |
1359 | } | |
1360 | ||
1361 | ||
1362 | static int ezusb_init(hermes_t *hw) | |
1363 | { | |
1364 | struct ezusb_priv *upriv = hw->priv; | |
1365 | int retval; | |
1366 | ||
1367 | BUG_ON(in_interrupt()); | |
1368 | BUG_ON(!upriv); | |
1369 | ||
1370 | upriv->reply_count = 0; | |
1371 | /* Write the MAGIC number on the simulated registers to keep | |
1372 | * orinoco.c happy */ | |
1373 | hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC); | |
1374 | hermes_write_regn(hw, RXFID, EZUSB_RID_RX); | |
1375 | ||
1376 | usb_kill_urb(upriv->read_urb); | |
1377 | ezusb_submit_in_urb(upriv); | |
1378 | ||
1379 | retval = ezusb_write_ltv(hw, 0, EZUSB_RID_INIT1, | |
1380 | HERMES_BYTES_TO_RECLEN(2), "\x10\x00"); | |
1381 | if (retval < 0) { | |
1382 | printk(KERN_ERR PFX "EZUSB_RID_INIT1 error %d\n", retval); | |
1383 | return retval; | |
1384 | } | |
1385 | ||
1386 | retval = ezusb_docmd_wait(hw, HERMES_CMD_INIT, 0, NULL); | |
1387 | if (retval < 0) { | |
1388 | printk(KERN_ERR PFX "HERMES_CMD_INIT error %d\n", retval); | |
1389 | return retval; | |
1390 | } | |
1391 | ||
1392 | return 0; | |
1393 | } | |
1394 | ||
1395 | static void ezusb_bulk_in_callback(struct urb *urb) | |
1396 | { | |
1397 | struct ezusb_priv *upriv = (struct ezusb_priv *) urb->context; | |
1398 | struct ezusb_packet *ans = urb->transfer_buffer; | |
1399 | u16 crc; | |
1400 | u16 hermes_rid; | |
1401 | ||
1402 | if (upriv->udev == NULL) { | |
1403 | dbg("disconnected"); | |
1404 | return; | |
1405 | } | |
1406 | ||
1407 | if (urb->status == -ETIMEDOUT) { | |
1408 | /* When a device gets unplugged we get this every time | |
1409 | * we resubmit, flooding the logs. Since we don't use | |
1410 | * USB timeouts, it shouldn't happen any other time*/ | |
1411 | pr_warning("%s: urb timed out, not resubmiting", __func__); | |
1412 | return; | |
1413 | } | |
1414 | if (urb->status == -ECONNABORTED) { | |
1415 | pr_warning("%s: connection abort, resubmiting urb", | |
1416 | __func__); | |
1417 | goto resubmit; | |
1418 | } | |
1419 | if ((urb->status == -EILSEQ) | |
1420 | || (urb->status == -ENOENT) | |
1421 | || (urb->status == -ECONNRESET)) { | |
1422 | dbg("status %d, not resubmiting", urb->status); | |
1423 | return; | |
1424 | } | |
1425 | if (urb->status) | |
1426 | dbg("status: %d length: %d", | |
1427 | urb->status, urb->actual_length); | |
1428 | if (urb->actual_length < sizeof(*ans)) { | |
1429 | err("%s: short read, ignoring", __func__); | |
1430 | goto resubmit; | |
1431 | } | |
1432 | crc = build_crc(ans); | |
1433 | if (le16_to_cpu(ans->crc) != crc) { | |
1434 | err("CRC error, ignoring packet"); | |
1435 | goto resubmit; | |
1436 | } | |
1437 | ||
1438 | hermes_rid = le16_to_cpu(ans->hermes_rid); | |
1439 | if ((hermes_rid != EZUSB_RID_RX) && !EZUSB_IS_INFO(hermes_rid)) { | |
1440 | ezusb_request_in_callback(upriv, urb); | |
1441 | } else if (upriv->dev) { | |
1442 | struct net_device *dev = upriv->dev; | |
1443 | struct orinoco_private *priv = ndev_priv(dev); | |
1444 | hermes_t *hw = &priv->hw; | |
1445 | ||
1446 | if (hermes_rid == EZUSB_RID_RX) { | |
1447 | __orinoco_ev_rx(dev, hw); | |
1448 | } else { | |
1449 | hermes_write_regn(hw, INFOFID, | |
1450 | le16_to_cpu(ans->hermes_rid)); | |
1451 | __orinoco_ev_info(dev, hw); | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | resubmit: | |
1456 | if (upriv->udev) | |
1457 | ezusb_submit_in_urb(upriv); | |
1458 | } | |
1459 | ||
1460 | static inline void ezusb_delete(struct ezusb_priv *upriv) | |
1461 | { | |
1462 | struct net_device *dev; | |
1463 | struct list_head *item; | |
1464 | struct list_head *tmp_item; | |
1465 | unsigned long flags; | |
1466 | ||
1467 | BUG_ON(in_interrupt()); | |
1468 | BUG_ON(!upriv); | |
1469 | ||
1470 | dev = upriv->dev; | |
1471 | mutex_lock(&upriv->mtx); | |
1472 | ||
1473 | upriv->udev = NULL; /* No timer will be rearmed from here */ | |
1474 | ||
1475 | usb_kill_urb(upriv->read_urb); | |
1476 | ||
1477 | spin_lock_irqsave(&upriv->req_lock, flags); | |
1478 | list_for_each_safe(item, tmp_item, &upriv->req_active) { | |
1479 | struct request_context *ctx; | |
1480 | int err; | |
1481 | ||
1482 | ctx = list_entry(item, struct request_context, list); | |
1483 | atomic_inc(&ctx->refcount); | |
1484 | ||
1485 | ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; | |
1486 | err = usb_unlink_urb(ctx->outurb); | |
1487 | ||
1488 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
1489 | if (err == -EINPROGRESS) | |
1490 | wait_for_completion(&ctx->done); | |
1491 | ||
1492 | del_timer_sync(&ctx->timer); | |
1493 | /* FIXME: there is an slight chance for the irq handler to | |
1494 | * be running */ | |
1495 | if (!list_empty(&ctx->list)) | |
1496 | ezusb_ctx_complete(ctx); | |
1497 | ||
1498 | ezusb_request_context_put(ctx); | |
1499 | spin_lock_irqsave(&upriv->req_lock, flags); | |
1500 | } | |
1501 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
1502 | ||
1503 | list_for_each_safe(item, tmp_item, &upriv->req_pending) | |
1504 | ezusb_ctx_complete(list_entry(item, | |
1505 | struct request_context, list)); | |
1506 | ||
1507 | if (upriv->read_urb->status == -EINPROGRESS) | |
1508 | printk(KERN_ERR PFX "Some URB in progress\n"); | |
1509 | ||
1510 | mutex_unlock(&upriv->mtx); | |
1511 | ||
1512 | kfree(upriv->read_urb->transfer_buffer); | |
1513 | if (upriv->bap_buf != NULL) | |
1514 | kfree(upriv->bap_buf); | |
1515 | if (upriv->read_urb != NULL) | |
1516 | usb_free_urb(upriv->read_urb); | |
1517 | if (upriv->dev) { | |
1518 | struct orinoco_private *priv = ndev_priv(upriv->dev); | |
1519 | orinoco_if_del(priv); | |
1520 | free_orinocodev(priv); | |
1521 | } | |
1522 | } | |
1523 | ||
1524 | static void ezusb_lock_irqsave(spinlock_t *lock, | |
1525 | unsigned long *flags) __acquires(lock) | |
1526 | { | |
1527 | spin_lock_bh(lock); | |
1528 | } | |
1529 | ||
1530 | static void ezusb_unlock_irqrestore(spinlock_t *lock, | |
1531 | unsigned long *flags) __releases(lock) | |
1532 | { | |
1533 | spin_unlock_bh(lock); | |
1534 | } | |
1535 | ||
1536 | static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock) | |
1537 | { | |
1538 | spin_lock_bh(lock); | |
1539 | } | |
1540 | ||
1541 | static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock) | |
1542 | { | |
1543 | spin_unlock_bh(lock); | |
1544 | } | |
1545 | ||
1546 | static const struct hermes_ops ezusb_ops = { | |
1547 | .init = ezusb_init, | |
1548 | .cmd_wait = ezusb_docmd_wait, | |
1549 | .init_cmd_wait = ezusb_doicmd_wait, | |
1550 | .allocate = ezusb_allocate, | |
1551 | .read_ltv = ezusb_read_ltv, | |
1552 | .write_ltv = ezusb_write_ltv, | |
1553 | .bap_pread = ezusb_bap_pread, | |
07cefe7a DK |
1554 | .read_pda = ezusb_read_pda, |
1555 | .program_init = ezusb_program_init, | |
1556 | .program_end = ezusb_program_end, | |
1557 | .program = ezusb_program, | |
9afac70a DK |
1558 | .lock_irqsave = ezusb_lock_irqsave, |
1559 | .unlock_irqrestore = ezusb_unlock_irqrestore, | |
1560 | .lock_irq = ezusb_lock_irq, | |
1561 | .unlock_irq = ezusb_unlock_irq, | |
1562 | }; | |
1563 | ||
1564 | static const struct net_device_ops ezusb_netdev_ops = { | |
1565 | .ndo_open = orinoco_open, | |
1566 | .ndo_stop = orinoco_stop, | |
1567 | .ndo_start_xmit = ezusb_xmit, | |
1568 | .ndo_set_multicast_list = orinoco_set_multicast_list, | |
1569 | .ndo_change_mtu = orinoco_change_mtu, | |
1570 | .ndo_set_mac_address = eth_mac_addr, | |
1571 | .ndo_validate_addr = eth_validate_addr, | |
1572 | .ndo_tx_timeout = orinoco_tx_timeout, | |
1573 | .ndo_get_stats = orinoco_get_stats, | |
1574 | }; | |
1575 | ||
1576 | static int ezusb_probe(struct usb_interface *interface, | |
1577 | const struct usb_device_id *id) | |
1578 | { | |
1579 | struct usb_device *udev = interface_to_usbdev(interface); | |
1580 | struct orinoco_private *priv; | |
1581 | hermes_t *hw; | |
1582 | struct ezusb_priv *upriv = NULL; | |
1583 | struct usb_interface_descriptor *iface_desc; | |
1584 | struct usb_endpoint_descriptor *ep; | |
1585 | const struct firmware *fw_entry; | |
1586 | int retval = 0; | |
1587 | int i; | |
1588 | ||
1589 | priv = alloc_orinocodev(sizeof(*upriv), &udev->dev, | |
1590 | ezusb_hard_reset, NULL); | |
1591 | if (!priv) { | |
1592 | err("Couldn't allocate orinocodev"); | |
1593 | goto exit; | |
1594 | } | |
1595 | ||
1596 | hw = &priv->hw; | |
1597 | ||
1598 | upriv = priv->card; | |
1599 | ||
1600 | mutex_init(&upriv->mtx); | |
1601 | spin_lock_init(&upriv->reply_count_lock); | |
1602 | ||
1603 | spin_lock_init(&upriv->req_lock); | |
1604 | INIT_LIST_HEAD(&upriv->req_pending); | |
1605 | INIT_LIST_HEAD(&upriv->req_active); | |
1606 | ||
1607 | upriv->udev = udev; | |
1608 | ||
1609 | hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake; | |
1610 | hw->reg_spacing = HERMES_16BIT_REGSPACING; | |
1611 | hw->priv = upriv; | |
1612 | hw->ops = &ezusb_ops; | |
1613 | ||
1614 | /* set up the endpoint information */ | |
1615 | /* check out the endpoints */ | |
1616 | ||
1617 | iface_desc = &interface->altsetting[0].desc; | |
1618 | for (i = 0; i < iface_desc->bNumEndpoints; ++i) { | |
1619 | ep = &interface->altsetting[0].endpoint[i].desc; | |
1620 | ||
1621 | if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
1622 | == USB_DIR_IN) && | |
1623 | ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) | |
1624 | == USB_ENDPOINT_XFER_BULK)) { | |
1625 | /* we found a bulk in endpoint */ | |
1626 | if (upriv->read_urb != NULL) { | |
1627 | pr_warning("Found a second bulk in ep, ignored"); | |
1628 | continue; | |
1629 | } | |
1630 | ||
1631 | upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1632 | if (!upriv->read_urb) { | |
1633 | err("No free urbs available"); | |
1634 | goto error; | |
1635 | } | |
1636 | if (le16_to_cpu(ep->wMaxPacketSize) != 64) | |
1637 | pr_warning("bulk in: wMaxPacketSize!= 64"); | |
1638 | if (ep->bEndpointAddress != (2 | USB_DIR_IN)) | |
1639 | pr_warning("bulk in: bEndpointAddress: %d", | |
1640 | ep->bEndpointAddress); | |
1641 | upriv->read_pipe = usb_rcvbulkpipe(udev, | |
1642 | ep-> | |
1643 | bEndpointAddress); | |
1644 | upriv->read_urb->transfer_buffer = | |
1645 | kmalloc(BULK_BUF_SIZE, GFP_KERNEL); | |
1646 | if (!upriv->read_urb->transfer_buffer) { | |
1647 | err("Couldn't allocate IN buffer"); | |
1648 | goto error; | |
1649 | } | |
1650 | } | |
1651 | ||
1652 | if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
1653 | == USB_DIR_OUT) && | |
1654 | ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) | |
1655 | == USB_ENDPOINT_XFER_BULK)) { | |
1656 | /* we found a bulk out endpoint */ | |
1657 | if (upriv->bap_buf != NULL) { | |
1658 | pr_warning("Found a second bulk out ep, ignored"); | |
1659 | continue; | |
1660 | } | |
1661 | ||
1662 | if (le16_to_cpu(ep->wMaxPacketSize) != 64) | |
1663 | pr_warning("bulk out: wMaxPacketSize != 64"); | |
1664 | if (ep->bEndpointAddress != 2) | |
1665 | pr_warning("bulk out: bEndpointAddress: %d", | |
1666 | ep->bEndpointAddress); | |
1667 | upriv->write_pipe = usb_sndbulkpipe(udev, | |
1668 | ep-> | |
1669 | bEndpointAddress); | |
1670 | upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL); | |
1671 | if (!upriv->bap_buf) { | |
1672 | err("Couldn't allocate bulk_out_buffer"); | |
1673 | goto error; | |
1674 | } | |
1675 | } | |
1676 | } | |
1677 | if (!upriv->bap_buf || !upriv->read_urb) { | |
1678 | err("Didn't find the required bulk endpoints"); | |
1679 | goto error; | |
1680 | } | |
1681 | ||
1682 | if (request_firmware(&fw_entry, "orinoco_ezusb_fw", | |
1683 | &interface->dev) == 0) { | |
1684 | firmware.size = fw_entry->size; | |
1685 | firmware.code = fw_entry->data; | |
1686 | } | |
1687 | if (firmware.size && firmware.code) { | |
1688 | ezusb_firmware_download(upriv, &firmware); | |
1689 | } else { | |
1690 | err("No firmware to download"); | |
1691 | goto error; | |
1692 | } | |
1693 | ||
1694 | if (ezusb_hard_reset(priv) < 0) { | |
1695 | err("Cannot reset the device"); | |
1696 | goto error; | |
1697 | } | |
1698 | ||
1699 | /* If the firmware is already downloaded orinoco.c will call | |
1700 | * ezusb_init but if the firmware is not already there, that will make | |
1701 | * the kernel very unstable, so we try initializing here and quit in | |
1702 | * case of error */ | |
1703 | if (ezusb_init(hw) < 0) { | |
1704 | err("Couldn't initialize the device"); | |
1705 | err("Firmware may not be downloaded or may be wrong."); | |
1706 | goto error; | |
1707 | } | |
1708 | ||
1709 | /* Initialise the main driver */ | |
1710 | if (orinoco_init(priv) != 0) { | |
1711 | err("orinoco_init() failed\n"); | |
1712 | goto error; | |
1713 | } | |
1714 | ||
1715 | if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) { | |
1716 | upriv->dev = NULL; | |
1717 | err("%s: orinoco_if_add() failed", __func__); | |
1718 | goto error; | |
1719 | } | |
1720 | upriv->dev = priv->ndev; | |
1721 | ||
1722 | goto exit; | |
1723 | ||
1724 | error: | |
1725 | ezusb_delete(upriv); | |
1726 | if (upriv->dev) { | |
1727 | /* upriv->dev was 0, so ezusb_delete() didn't free it */ | |
1728 | free_orinocodev(priv); | |
1729 | } | |
1730 | upriv = NULL; | |
1731 | retval = -EFAULT; | |
1732 | exit: | |
1733 | if (fw_entry) { | |
1734 | firmware.code = NULL; | |
1735 | firmware.size = 0; | |
1736 | release_firmware(fw_entry); | |
1737 | } | |
1738 | usb_set_intfdata(interface, upriv); | |
1739 | return retval; | |
1740 | } | |
1741 | ||
1742 | ||
1743 | static void ezusb_disconnect(struct usb_interface *intf) | |
1744 | { | |
1745 | struct ezusb_priv *upriv = usb_get_intfdata(intf); | |
1746 | usb_set_intfdata(intf, NULL); | |
1747 | ezusb_delete(upriv); | |
1748 | printk(KERN_INFO PFX "Disconnected\n"); | |
1749 | } | |
1750 | ||
1751 | ||
1752 | /* usb specific object needed to register this driver with the usb subsystem */ | |
1753 | static struct usb_driver orinoco_driver = { | |
1754 | .name = DRIVER_NAME, | |
1755 | .probe = ezusb_probe, | |
1756 | .disconnect = ezusb_disconnect, | |
1757 | .id_table = ezusb_table, | |
1758 | }; | |
1759 | ||
1760 | /* Can't be declared "const" or the whole __initdata section will | |
1761 | * become const */ | |
1762 | static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION | |
1763 | " (Manuel Estrada Sainz)"; | |
1764 | ||
1765 | static int __init ezusb_module_init(void) | |
1766 | { | |
1767 | int err; | |
1768 | ||
1769 | printk(KERN_DEBUG "%s\n", version); | |
1770 | ||
1771 | /* register this driver with the USB subsystem */ | |
1772 | err = usb_register(&orinoco_driver); | |
1773 | if (err < 0) { | |
1774 | printk(KERN_ERR PFX "usb_register failed, error %d\n", | |
1775 | err); | |
1776 | return err; | |
1777 | } | |
1778 | ||
1779 | return 0; | |
1780 | } | |
1781 | ||
1782 | static void __exit ezusb_module_exit(void) | |
1783 | { | |
1784 | /* deregister this driver with the USB subsystem */ | |
1785 | usb_deregister(&orinoco_driver); | |
1786 | } | |
1787 | ||
1788 | ||
1789 | module_init(ezusb_module_init); | |
1790 | module_exit(ezusb_module_exit); | |
1791 | ||
1792 | MODULE_AUTHOR("Manuel Estrada Sainz"); | |
1793 | MODULE_DESCRIPTION | |
1794 | ("Driver for Orinoco wireless LAN cards using EZUSB bridge"); | |
1795 | MODULE_LICENSE("Dual MPL/GPL"); |