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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> | |
9afac70a DK |
55 | #include <linux/slab.h> |
56 | #include <linux/fcntl.h> | |
57 | #include <linux/spinlock.h> | |
58 | #include <linux/list.h> | |
9afac70a DK |
59 | #include <linux/usb.h> |
60 | #include <linux/timer.h> | |
61 | ||
62 | #include <linux/netdevice.h> | |
63 | #include <linux/if_arp.h> | |
64 | #include <linux/etherdevice.h> | |
65 | #include <linux/wireless.h> | |
66 | #include <linux/firmware.h> | |
67 | ||
bac6fafd | 68 | #include "mic.h" |
9afac70a DK |
69 | #include "orinoco.h" |
70 | ||
71 | #ifndef URB_ASYNC_UNLINK | |
72 | #define URB_ASYNC_UNLINK 0 | |
73 | #endif | |
74 | ||
75 | /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */ | |
76 | static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00}; | |
77 | #define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2) | |
78 | ||
79 | struct header_struct { | |
80 | /* 802.3 */ | |
81 | u8 dest[ETH_ALEN]; | |
82 | u8 src[ETH_ALEN]; | |
83 | __be16 len; | |
84 | /* 802.2 */ | |
85 | u8 dsap; | |
86 | u8 ssap; | |
87 | u8 ctrl; | |
88 | /* SNAP */ | |
89 | u8 oui[3]; | |
90 | __be16 ethertype; | |
ba2d3587 | 91 | } __packed; |
9afac70a DK |
92 | |
93 | struct ez_usb_fw { | |
94 | u16 size; | |
95 | const u8 *code; | |
96 | }; | |
97 | ||
98 | static struct ez_usb_fw firmware = { | |
99 | .size = 0, | |
100 | .code = NULL, | |
101 | }; | |
102 | ||
9afac70a | 103 | /* Debugging macros */ |
9afac70a DK |
104 | #undef err |
105 | #define err(format, arg...) \ | |
106 | do { printk(KERN_ERR PFX format "\n", ## arg); } while (0) | |
107 | ||
9afac70a DK |
108 | MODULE_FIRMWARE("orinoco_ezusb_fw"); |
109 | ||
110 | /* | |
111 | * Under some conditions, the card gets stuck and stops paying attention | |
112 | * to the world (i.e. data communication stalls) until we do something to | |
113 | * it. Sending an INQ_TALLIES command seems to be enough and should be | |
114 | * harmless otherwise. This behaviour has been observed when using the | |
115 | * driver on a systemimager client during installation. In the past a | |
116 | * timer was used to send INQ_TALLIES commands when there was no other | |
117 | * activity, but it was troublesome and was removed. | |
118 | */ | |
119 | ||
120 | #define USB_COMPAQ_VENDOR_ID 0x049f /* Compaq Computer Corp. */ | |
121 | #define USB_COMPAQ_WL215_ID 0x001f /* Compaq WL215 USB Adapter */ | |
122 | #define USB_COMPAQ_W200_ID 0x0076 /* Compaq W200 USB Adapter */ | |
123 | #define USB_HP_WL215_ID 0x0082 /* Compaq WL215 USB Adapter */ | |
124 | ||
125 | #define USB_MELCO_VENDOR_ID 0x0411 | |
126 | #define USB_BUFFALO_L11_ID 0x0006 /* BUFFALO WLI-USB-L11 */ | |
127 | #define USB_BUFFALO_L11G_WR_ID 0x000B /* BUFFALO WLI-USB-L11G-WR */ | |
128 | #define USB_BUFFALO_L11G_ID 0x000D /* BUFFALO WLI-USB-L11G */ | |
129 | ||
130 | #define USB_LUCENT_VENDOR_ID 0x047E /* Lucent Technologies */ | |
131 | #define USB_LUCENT_ORINOCO_ID 0x0300 /* Lucent/Agere Orinoco USB Client */ | |
132 | ||
133 | #define USB_AVAYA8_VENDOR_ID 0x0D98 | |
134 | #define USB_AVAYAE_VENDOR_ID 0x0D9E | |
135 | #define USB_AVAYA_WIRELESS_ID 0x0300 /* Avaya Wireless USB Card */ | |
136 | ||
137 | #define USB_AGERE_VENDOR_ID 0x0D4E /* Agere Systems */ | |
138 | #define USB_AGERE_MODEL0801_ID 0x1000 /* Wireless USB Card Model 0801 */ | |
139 | #define USB_AGERE_MODEL0802_ID 0x1001 /* Wireless USB Card Model 0802 */ | |
140 | #define USB_AGERE_REBRANDED_ID 0x047A /* WLAN USB Card */ | |
141 | ||
142 | #define USB_ELSA_VENDOR_ID 0x05CC | |
143 | #define USB_ELSA_AIRLANCER_ID 0x3100 /* ELSA AirLancer USB-11 */ | |
144 | ||
145 | #define USB_LEGEND_VENDOR_ID 0x0E7C | |
146 | #define USB_LEGEND_JOYNET_ID 0x0300 /* Joynet WLAN USB Card */ | |
147 | ||
148 | #define USB_SAMSUNG_VENDOR_ID 0x04E8 | |
149 | #define USB_SAMSUNG_SEW2001U1_ID 0x5002 /* Samsung SEW-2001u Card */ | |
150 | #define USB_SAMSUNG_SEW2001U2_ID 0x5B11 /* Samsung SEW-2001u Card */ | |
151 | #define USB_SAMSUNG_SEW2003U_ID 0x7011 /* Samsung SEW-2003U Card */ | |
152 | ||
153 | #define USB_IGATE_VENDOR_ID 0x0681 | |
154 | #define USB_IGATE_IGATE_11M_ID 0x0012 /* I-GATE 11M USB Card */ | |
155 | ||
156 | #define USB_FUJITSU_VENDOR_ID 0x0BF8 | |
157 | #define USB_FUJITSU_E1100_ID 0x1002 /* connect2AIR WLAN E-1100 USB */ | |
158 | ||
159 | #define USB_2WIRE_VENDOR_ID 0x1630 | |
160 | #define USB_2WIRE_WIRELESS_ID 0xff81 /* 2Wire Wireless USB adapter */ | |
161 | ||
162 | ||
163 | #define EZUSB_REQUEST_FW_TRANS 0xA0 | |
164 | #define EZUSB_REQUEST_TRIGER 0xAA | |
165 | #define EZUSB_REQUEST_TRIG_AC 0xAC | |
166 | #define EZUSB_CPUCS_REG 0x7F92 | |
167 | ||
168 | #define EZUSB_RID_TX 0x0700 | |
169 | #define EZUSB_RID_RX 0x0701 | |
170 | #define EZUSB_RID_INIT1 0x0702 | |
171 | #define EZUSB_RID_ACK 0x0710 | |
07cefe7a DK |
172 | #define EZUSB_RID_READ_PDA 0x0800 |
173 | #define EZUSB_RID_PROG_INIT 0x0852 | |
174 | #define EZUSB_RID_PROG_SET_ADDR 0x0853 | |
175 | #define EZUSB_RID_PROG_BYTES 0x0854 | |
176 | #define EZUSB_RID_PROG_END 0x0855 | |
9afac70a DK |
177 | #define EZUSB_RID_DOCMD 0x0860 |
178 | ||
179 | /* Recognize info frames */ | |
180 | #define EZUSB_IS_INFO(id) ((id >= 0xF000) && (id <= 0xF2FF)) | |
181 | ||
182 | #define EZUSB_MAGIC 0x0210 | |
183 | ||
184 | #define EZUSB_FRAME_DATA 1 | |
185 | #define EZUSB_FRAME_CONTROL 2 | |
186 | ||
933d5943 | 187 | #define DEF_TIMEOUT (3 * HZ) |
9afac70a DK |
188 | |
189 | #define BULK_BUF_SIZE 2048 | |
190 | ||
07cefe7a DK |
191 | #define MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet)) |
192 | ||
9afac70a DK |
193 | #define FW_BUF_SIZE 64 |
194 | #define FW_VAR_OFFSET_PTR 0x359 | |
195 | #define FW_VAR_VALUE 0 | |
196 | #define FW_HOLE_START 0x100 | |
197 | #define FW_HOLE_END 0x300 | |
198 | ||
199 | struct ezusb_packet { | |
200 | __le16 magic; /* 0x0210 */ | |
201 | u8 req_reply_count; | |
202 | u8 ans_reply_count; | |
203 | __le16 frame_type; /* 0x01 for data frames, 0x02 otherwise */ | |
204 | __le16 size; /* transport size */ | |
205 | __le16 crc; /* CRC up to here */ | |
206 | __le16 hermes_len; | |
207 | __le16 hermes_rid; | |
208 | u8 data[0]; | |
ba2d3587 | 209 | } __packed; |
9afac70a DK |
210 | |
211 | /* Table of devices that work or may work with this driver */ | |
212 | static struct usb_device_id ezusb_table[] = { | |
213 | {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_WL215_ID)}, | |
214 | {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_HP_WL215_ID)}, | |
215 | {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_W200_ID)}, | |
216 | {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11_ID)}, | |
217 | {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_WR_ID)}, | |
218 | {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_ID)}, | |
219 | {USB_DEVICE(USB_LUCENT_VENDOR_ID, USB_LUCENT_ORINOCO_ID)}, | |
220 | {USB_DEVICE(USB_AVAYA8_VENDOR_ID, USB_AVAYA_WIRELESS_ID)}, | |
221 | {USB_DEVICE(USB_AVAYAE_VENDOR_ID, USB_AVAYA_WIRELESS_ID)}, | |
222 | {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0801_ID)}, | |
223 | {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0802_ID)}, | |
224 | {USB_DEVICE(USB_ELSA_VENDOR_ID, USB_ELSA_AIRLANCER_ID)}, | |
225 | {USB_DEVICE(USB_LEGEND_VENDOR_ID, USB_LEGEND_JOYNET_ID)}, | |
226 | {USB_DEVICE_VER(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U1_ID, | |
227 | 0, 0)}, | |
228 | {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U2_ID)}, | |
229 | {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2003U_ID)}, | |
230 | {USB_DEVICE(USB_IGATE_VENDOR_ID, USB_IGATE_IGATE_11M_ID)}, | |
231 | {USB_DEVICE(USB_FUJITSU_VENDOR_ID, USB_FUJITSU_E1100_ID)}, | |
232 | {USB_DEVICE(USB_2WIRE_VENDOR_ID, USB_2WIRE_WIRELESS_ID)}, | |
233 | {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_REBRANDED_ID)}, | |
234 | {} /* Terminating entry */ | |
235 | }; | |
236 | ||
237 | MODULE_DEVICE_TABLE(usb, ezusb_table); | |
238 | ||
239 | /* Structure to hold all of our device specific stuff */ | |
240 | struct ezusb_priv { | |
241 | struct usb_device *udev; | |
242 | struct net_device *dev; | |
243 | struct mutex mtx; | |
244 | spinlock_t req_lock; | |
245 | struct list_head req_pending; | |
246 | struct list_head req_active; | |
247 | spinlock_t reply_count_lock; | |
248 | u16 hermes_reg_fake[0x40]; | |
249 | u8 *bap_buf; | |
250 | struct urb *read_urb; | |
251 | int read_pipe; | |
252 | int write_pipe; | |
253 | u8 reply_count; | |
254 | }; | |
255 | ||
256 | enum ezusb_state { | |
257 | EZUSB_CTX_START, | |
258 | EZUSB_CTX_QUEUED, | |
259 | EZUSB_CTX_REQ_SUBMITTED, | |
260 | EZUSB_CTX_REQ_COMPLETE, | |
261 | EZUSB_CTX_RESP_RECEIVED, | |
262 | EZUSB_CTX_REQ_TIMEOUT, | |
263 | EZUSB_CTX_REQ_FAILED, | |
264 | EZUSB_CTX_RESP_TIMEOUT, | |
265 | EZUSB_CTX_REQSUBMIT_FAIL, | |
266 | EZUSB_CTX_COMPLETE, | |
267 | }; | |
268 | ||
269 | struct request_context { | |
270 | struct list_head list; | |
271 | atomic_t refcount; | |
272 | struct completion done; /* Signals that CTX is dead */ | |
273 | int killed; | |
274 | struct urb *outurb; /* OUT for req pkt */ | |
275 | struct ezusb_priv *upriv; | |
276 | struct ezusb_packet *buf; | |
277 | int buf_length; | |
278 | struct timer_list timer; /* Timeout handling */ | |
279 | enum ezusb_state state; /* Current state */ | |
280 | /* the RID that we will wait for */ | |
281 | u16 out_rid; | |
282 | u16 in_rid; | |
283 | }; | |
284 | ||
285 | ||
286 | /* Forward declarations */ | |
287 | static void ezusb_ctx_complete(struct request_context *ctx); | |
288 | static void ezusb_req_queue_run(struct ezusb_priv *upriv); | |
289 | static void ezusb_bulk_in_callback(struct urb *urb); | |
290 | ||
291 | static inline u8 ezusb_reply_inc(u8 count) | |
292 | { | |
293 | if (count < 0x7F) | |
294 | return count + 1; | |
295 | else | |
296 | return 1; | |
297 | } | |
298 | ||
299 | static void ezusb_request_context_put(struct request_context *ctx) | |
300 | { | |
301 | if (!atomic_dec_and_test(&ctx->refcount)) | |
302 | return; | |
303 | ||
304 | WARN_ON(!ctx->done.done); | |
305 | BUG_ON(ctx->outurb->status == -EINPROGRESS); | |
306 | BUG_ON(timer_pending(&ctx->timer)); | |
307 | usb_free_urb(ctx->outurb); | |
308 | kfree(ctx->buf); | |
309 | kfree(ctx); | |
310 | } | |
311 | ||
312 | static inline void ezusb_mod_timer(struct ezusb_priv *upriv, | |
313 | struct timer_list *timer, | |
314 | unsigned long expire) | |
315 | { | |
316 | if (!upriv->udev) | |
317 | return; | |
318 | mod_timer(timer, expire); | |
319 | } | |
320 | ||
321 | static void ezusb_request_timerfn(u_long _ctx) | |
322 | { | |
323 | struct request_context *ctx = (void *) _ctx; | |
324 | ||
325 | ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; | |
326 | if (usb_unlink_urb(ctx->outurb) == -EINPROGRESS) { | |
327 | ctx->state = EZUSB_CTX_REQ_TIMEOUT; | |
328 | } else { | |
329 | ctx->state = EZUSB_CTX_RESP_TIMEOUT; | |
70d2f61f | 330 | dev_dbg(&ctx->outurb->dev->dev, "couldn't unlink\n"); |
9afac70a DK |
331 | atomic_inc(&ctx->refcount); |
332 | ctx->killed = 1; | |
333 | ezusb_ctx_complete(ctx); | |
334 | ezusb_request_context_put(ctx); | |
335 | } | |
336 | }; | |
337 | ||
338 | static struct request_context *ezusb_alloc_ctx(struct ezusb_priv *upriv, | |
339 | u16 out_rid, u16 in_rid) | |
340 | { | |
341 | struct request_context *ctx; | |
342 | ||
6ac478cf | 343 | ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); |
9afac70a DK |
344 | if (!ctx) |
345 | return NULL; | |
346 | ||
9afac70a DK |
347 | ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC); |
348 | if (!ctx->buf) { | |
349 | kfree(ctx); | |
350 | return NULL; | |
351 | } | |
352 | ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC); | |
353 | if (!ctx->outurb) { | |
354 | kfree(ctx->buf); | |
355 | kfree(ctx); | |
356 | return NULL; | |
357 | } | |
358 | ||
359 | ctx->upriv = upriv; | |
360 | ctx->state = EZUSB_CTX_START; | |
361 | ctx->out_rid = out_rid; | |
362 | ctx->in_rid = in_rid; | |
363 | ||
364 | atomic_set(&ctx->refcount, 1); | |
365 | init_completion(&ctx->done); | |
366 | ||
367 | init_timer(&ctx->timer); | |
368 | ctx->timer.function = ezusb_request_timerfn; | |
369 | ctx->timer.data = (u_long) ctx; | |
370 | return ctx; | |
371 | } | |
372 | ||
373 | ||
374 | /* Hopefully the real complete_all will soon be exported, in the mean | |
375 | * while this should work. */ | |
376 | static inline void ezusb_complete_all(struct completion *comp) | |
377 | { | |
378 | complete(comp); | |
379 | complete(comp); | |
380 | complete(comp); | |
381 | complete(comp); | |
382 | } | |
383 | ||
384 | static void ezusb_ctx_complete(struct request_context *ctx) | |
385 | { | |
386 | struct ezusb_priv *upriv = ctx->upriv; | |
387 | unsigned long flags; | |
388 | ||
389 | spin_lock_irqsave(&upriv->req_lock, flags); | |
390 | ||
391 | list_del_init(&ctx->list); | |
392 | if (upriv->udev) { | |
393 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
394 | ezusb_req_queue_run(upriv); | |
395 | spin_lock_irqsave(&upriv->req_lock, flags); | |
396 | } | |
397 | ||
398 | switch (ctx->state) { | |
399 | case EZUSB_CTX_COMPLETE: | |
400 | case EZUSB_CTX_REQSUBMIT_FAIL: | |
401 | case EZUSB_CTX_REQ_FAILED: | |
402 | case EZUSB_CTX_REQ_TIMEOUT: | |
403 | case EZUSB_CTX_RESP_TIMEOUT: | |
404 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
405 | ||
406 | if ((ctx->out_rid == EZUSB_RID_TX) && upriv->dev) { | |
407 | struct net_device *dev = upriv->dev; | |
408 | struct orinoco_private *priv = ndev_priv(dev); | |
409 | struct net_device_stats *stats = &priv->stats; | |
410 | ||
411 | if (ctx->state != EZUSB_CTX_COMPLETE) | |
412 | stats->tx_errors++; | |
413 | else | |
414 | stats->tx_packets++; | |
415 | ||
416 | netif_wake_queue(dev); | |
417 | } | |
418 | ezusb_complete_all(&ctx->done); | |
419 | ezusb_request_context_put(ctx); | |
420 | break; | |
421 | ||
422 | default: | |
423 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
424 | if (!upriv->udev) { | |
425 | /* This is normal, as all request contexts get flushed | |
426 | * when the device is disconnected */ | |
427 | err("Called, CTX not terminating, but device gone"); | |
428 | ezusb_complete_all(&ctx->done); | |
429 | ezusb_request_context_put(ctx); | |
430 | break; | |
431 | } | |
432 | ||
433 | err("Called, CTX not in terminating state."); | |
434 | /* Things are really bad if this happens. Just leak | |
435 | * the CTX because it may still be linked to the | |
436 | * queue or the OUT urb may still be active. | |
437 | * Just leaking at least prevents an Oops or Panic. | |
438 | */ | |
439 | break; | |
440 | } | |
441 | } | |
442 | ||
443 | /** | |
444 | * ezusb_req_queue_run: | |
445 | * Description: | |
446 | * Note: Only one active CTX at any one time, because there's no | |
447 | * other (reliable) way to match the response URB to the correct | |
448 | * CTX. | |
449 | **/ | |
450 | static void ezusb_req_queue_run(struct ezusb_priv *upriv) | |
451 | { | |
452 | unsigned long flags; | |
453 | struct request_context *ctx; | |
454 | int result; | |
455 | ||
456 | spin_lock_irqsave(&upriv->req_lock, flags); | |
457 | ||
458 | if (!list_empty(&upriv->req_active)) | |
459 | goto unlock; | |
460 | ||
461 | if (list_empty(&upriv->req_pending)) | |
462 | goto unlock; | |
463 | ||
464 | ctx = | |
465 | list_entry(upriv->req_pending.next, struct request_context, | |
466 | list); | |
467 | ||
468 | if (!ctx->upriv->udev) | |
469 | goto unlock; | |
470 | ||
471 | /* We need to split this off to avoid a race condition */ | |
472 | list_move_tail(&ctx->list, &upriv->req_active); | |
473 | ||
474 | if (ctx->state == EZUSB_CTX_QUEUED) { | |
475 | atomic_inc(&ctx->refcount); | |
476 | result = usb_submit_urb(ctx->outurb, GFP_ATOMIC); | |
477 | if (result) { | |
478 | ctx->state = EZUSB_CTX_REQSUBMIT_FAIL; | |
479 | ||
480 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
481 | ||
482 | err("Fatal, failed to submit command urb." | |
483 | " error=%d\n", result); | |
484 | ||
485 | ezusb_ctx_complete(ctx); | |
486 | ezusb_request_context_put(ctx); | |
487 | goto done; | |
488 | } | |
489 | ||
490 | ctx->state = EZUSB_CTX_REQ_SUBMITTED; | |
491 | ezusb_mod_timer(ctx->upriv, &ctx->timer, | |
492 | jiffies + DEF_TIMEOUT); | |
493 | } | |
494 | ||
495 | unlock: | |
496 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
497 | ||
498 | done: | |
499 | return; | |
500 | } | |
501 | ||
502 | static void ezusb_req_enqueue_run(struct ezusb_priv *upriv, | |
503 | struct request_context *ctx) | |
504 | { | |
505 | unsigned long flags; | |
506 | ||
507 | spin_lock_irqsave(&upriv->req_lock, flags); | |
508 | ||
509 | if (!ctx->upriv->udev) { | |
510 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
511 | goto done; | |
512 | } | |
513 | atomic_inc(&ctx->refcount); | |
514 | list_add_tail(&ctx->list, &upriv->req_pending); | |
515 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
516 | ||
517 | ctx->state = EZUSB_CTX_QUEUED; | |
518 | ezusb_req_queue_run(upriv); | |
519 | ||
520 | done: | |
521 | return; | |
522 | } | |
523 | ||
524 | static void ezusb_request_out_callback(struct urb *urb) | |
525 | { | |
526 | unsigned long flags; | |
527 | enum ezusb_state state; | |
528 | struct request_context *ctx = urb->context; | |
529 | struct ezusb_priv *upriv = ctx->upriv; | |
530 | ||
531 | spin_lock_irqsave(&upriv->req_lock, flags); | |
532 | ||
533 | del_timer(&ctx->timer); | |
534 | ||
535 | if (ctx->killed) { | |
536 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
537 | pr_warning("interrupt called with dead ctx"); | |
538 | goto out; | |
539 | } | |
540 | ||
541 | state = ctx->state; | |
542 | ||
543 | if (urb->status == 0) { | |
544 | switch (state) { | |
545 | case EZUSB_CTX_REQ_SUBMITTED: | |
546 | if (ctx->in_rid) { | |
547 | ctx->state = EZUSB_CTX_REQ_COMPLETE; | |
548 | /* reply URB still pending */ | |
549 | ezusb_mod_timer(upriv, &ctx->timer, | |
550 | jiffies + DEF_TIMEOUT); | |
551 | spin_unlock_irqrestore(&upriv->req_lock, | |
552 | flags); | |
553 | break; | |
554 | } | |
555 | /* fall through */ | |
556 | case EZUSB_CTX_RESP_RECEIVED: | |
557 | /* IN already received before this OUT-ACK */ | |
558 | ctx->state = EZUSB_CTX_COMPLETE; | |
559 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
560 | ezusb_ctx_complete(ctx); | |
561 | break; | |
562 | ||
563 | default: | |
564 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
565 | err("Unexpected state(0x%x, %d) in OUT URB", | |
566 | state, urb->status); | |
567 | break; | |
568 | } | |
569 | } else { | |
570 | /* If someone cancels the OUT URB then its status | |
571 | * should be either -ECONNRESET or -ENOENT. | |
572 | */ | |
573 | switch (state) { | |
574 | case EZUSB_CTX_REQ_SUBMITTED: | |
575 | case EZUSB_CTX_RESP_RECEIVED: | |
576 | ctx->state = EZUSB_CTX_REQ_FAILED; | |
577 | /* fall through */ | |
578 | ||
579 | case EZUSB_CTX_REQ_FAILED: | |
580 | case EZUSB_CTX_REQ_TIMEOUT: | |
581 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
582 | ||
583 | ezusb_ctx_complete(ctx); | |
584 | break; | |
585 | ||
586 | default: | |
587 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
588 | ||
589 | err("Unexpected state(0x%x, %d) in OUT URB", | |
590 | state, urb->status); | |
591 | break; | |
592 | } | |
593 | } | |
594 | out: | |
595 | ezusb_request_context_put(ctx); | |
596 | } | |
597 | ||
598 | static void ezusb_request_in_callback(struct ezusb_priv *upriv, | |
599 | struct urb *urb) | |
600 | { | |
601 | struct ezusb_packet *ans = urb->transfer_buffer; | |
602 | struct request_context *ctx = NULL; | |
603 | enum ezusb_state state; | |
604 | unsigned long flags; | |
605 | ||
606 | /* Find the CTX on the active queue that requested this URB */ | |
607 | spin_lock_irqsave(&upriv->req_lock, flags); | |
608 | if (upriv->udev) { | |
609 | struct list_head *item; | |
610 | ||
611 | list_for_each(item, &upriv->req_active) { | |
612 | struct request_context *c; | |
613 | int reply_count; | |
614 | ||
615 | c = list_entry(item, struct request_context, list); | |
616 | reply_count = | |
617 | ezusb_reply_inc(c->buf->req_reply_count); | |
618 | if ((ans->ans_reply_count == reply_count) | |
619 | && (le16_to_cpu(ans->hermes_rid) == c->in_rid)) { | |
620 | ctx = c; | |
621 | break; | |
622 | } | |
70d2f61f GKH |
623 | netdev_dbg(upriv->dev, "Skipped (0x%x/0x%x) (%d/%d)\n", |
624 | le16_to_cpu(ans->hermes_rid), c->in_rid, | |
625 | ans->ans_reply_count, reply_count); | |
9afac70a DK |
626 | } |
627 | } | |
628 | ||
629 | if (ctx == NULL) { | |
630 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
631 | err("%s: got unexpected RID: 0x%04X", __func__, | |
632 | le16_to_cpu(ans->hermes_rid)); | |
633 | ezusb_req_queue_run(upriv); | |
634 | return; | |
635 | } | |
636 | ||
637 | /* The data we want is in the in buffer, exchange */ | |
638 | urb->transfer_buffer = ctx->buf; | |
639 | ctx->buf = (void *) ans; | |
640 | ctx->buf_length = urb->actual_length; | |
641 | ||
642 | state = ctx->state; | |
643 | switch (state) { | |
644 | case EZUSB_CTX_REQ_SUBMITTED: | |
645 | /* We have received our response URB before | |
646 | * our request has been acknowledged. Do NOT | |
647 | * destroy our CTX yet, because our OUT URB | |
648 | * is still alive ... | |
649 | */ | |
650 | ctx->state = EZUSB_CTX_RESP_RECEIVED; | |
651 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
652 | ||
653 | /* Let the machine continue running. */ | |
654 | break; | |
655 | ||
656 | case EZUSB_CTX_REQ_COMPLETE: | |
657 | /* This is the usual path: our request | |
658 | * has already been acknowledged, and | |
659 | * we have now received the reply. | |
660 | */ | |
661 | ctx->state = EZUSB_CTX_COMPLETE; | |
662 | ||
663 | /* Stop the intimer */ | |
664 | del_timer(&ctx->timer); | |
665 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
666 | ||
667 | /* Call the completion handler */ | |
668 | ezusb_ctx_complete(ctx); | |
669 | break; | |
670 | ||
671 | default: | |
672 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
673 | ||
674 | pr_warning("Matched IN URB, unexpected context state(0x%x)", | |
675 | state); | |
676 | /* Throw this CTX away and try submitting another */ | |
677 | del_timer(&ctx->timer); | |
678 | ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; | |
679 | usb_unlink_urb(ctx->outurb); | |
680 | ezusb_req_queue_run(upriv); | |
681 | break; | |
682 | } /* switch */ | |
683 | } | |
684 | ||
685 | ||
686 | static void ezusb_req_ctx_wait(struct ezusb_priv *upriv, | |
687 | struct request_context *ctx) | |
688 | { | |
689 | switch (ctx->state) { | |
690 | case EZUSB_CTX_QUEUED: | |
691 | case EZUSB_CTX_REQ_SUBMITTED: | |
692 | case EZUSB_CTX_REQ_COMPLETE: | |
693 | case EZUSB_CTX_RESP_RECEIVED: | |
fc97431a | 694 | if (in_softirq()) { |
9afac70a DK |
695 | /* If we get called from a timer, timeout timers don't |
696 | * get the chance to run themselves. So we make sure | |
697 | * that we don't sleep for ever */ | |
698 | int msecs = DEF_TIMEOUT * (1000 / HZ); | |
699 | while (!ctx->done.done && msecs--) | |
700 | udelay(1000); | |
701 | } else { | |
702 | wait_event_interruptible(ctx->done.wait, | |
703 | ctx->done.done); | |
704 | } | |
705 | break; | |
706 | default: | |
707 | /* Done or failed - nothing to wait for */ | |
708 | break; | |
709 | } | |
710 | } | |
711 | ||
712 | static inline u16 build_crc(struct ezusb_packet *data) | |
713 | { | |
714 | u16 crc = 0; | |
715 | u8 *bytes = (u8 *)data; | |
716 | int i; | |
717 | ||
718 | for (i = 0; i < 8; i++) | |
719 | crc = (crc << 1) + bytes[i]; | |
720 | ||
721 | return crc; | |
722 | } | |
723 | ||
724 | /** | |
725 | * ezusb_fill_req: | |
726 | * | |
727 | * if data == NULL and length > 0 the data is assumed to be already in | |
728 | * the target buffer and only the header is filled. | |
729 | * | |
730 | */ | |
731 | static int ezusb_fill_req(struct ezusb_packet *req, u16 length, u16 rid, | |
732 | const void *data, u16 frame_type, u8 reply_count) | |
733 | { | |
734 | int total_size = sizeof(*req) + length; | |
735 | ||
736 | BUG_ON(total_size > BULK_BUF_SIZE); | |
737 | ||
738 | req->magic = cpu_to_le16(EZUSB_MAGIC); | |
739 | req->req_reply_count = reply_count; | |
740 | req->ans_reply_count = 0; | |
741 | req->frame_type = cpu_to_le16(frame_type); | |
742 | req->size = cpu_to_le16(length + 4); | |
743 | req->crc = cpu_to_le16(build_crc(req)); | |
744 | req->hermes_len = cpu_to_le16(HERMES_BYTES_TO_RECLEN(length)); | |
745 | req->hermes_rid = cpu_to_le16(rid); | |
746 | if (data) | |
747 | memcpy(req->data, data, length); | |
748 | return total_size; | |
749 | } | |
750 | ||
751 | static int ezusb_submit_in_urb(struct ezusb_priv *upriv) | |
752 | { | |
753 | int retval = 0; | |
754 | void *cur_buf = upriv->read_urb->transfer_buffer; | |
755 | ||
756 | if (upriv->read_urb->status == -EINPROGRESS) { | |
70d2f61f | 757 | netdev_dbg(upriv->dev, "urb busy, not resubmiting\n"); |
9afac70a DK |
758 | retval = -EBUSY; |
759 | goto exit; | |
760 | } | |
761 | usb_fill_bulk_urb(upriv->read_urb, upriv->udev, upriv->read_pipe, | |
762 | cur_buf, BULK_BUF_SIZE, | |
763 | ezusb_bulk_in_callback, upriv); | |
764 | upriv->read_urb->transfer_flags = 0; | |
765 | retval = usb_submit_urb(upriv->read_urb, GFP_ATOMIC); | |
766 | if (retval) | |
767 | err("%s submit failed %d", __func__, retval); | |
768 | ||
769 | exit: | |
770 | return retval; | |
771 | } | |
772 | ||
773 | static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset) | |
774 | { | |
775 | u8 res_val = reset; /* avoid argument promotion */ | |
776 | ||
777 | if (!upriv->udev) { | |
778 | err("%s: !upriv->udev", __func__); | |
779 | return -EFAULT; | |
780 | } | |
781 | return usb_control_msg(upriv->udev, | |
782 | usb_sndctrlpipe(upriv->udev, 0), | |
783 | EZUSB_REQUEST_FW_TRANS, | |
784 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | | |
785 | USB_DIR_OUT, EZUSB_CPUCS_REG, 0, &res_val, | |
786 | sizeof(res_val), DEF_TIMEOUT); | |
787 | } | |
788 | ||
789 | static int ezusb_firmware_download(struct ezusb_priv *upriv, | |
790 | struct ez_usb_fw *fw) | |
791 | { | |
488ec878 | 792 | u8 *fw_buffer; |
9afac70a DK |
793 | int retval, addr; |
794 | int variant_offset; | |
795 | ||
488ec878 KAM |
796 | fw_buffer = kmalloc(FW_BUF_SIZE, GFP_KERNEL); |
797 | if (!fw_buffer) { | |
798 | printk(KERN_ERR PFX "Out of memory for firmware buffer.\n"); | |
799 | return -ENOMEM; | |
800 | } | |
9afac70a DK |
801 | /* |
802 | * This byte is 1 and should be replaced with 0. The offset is | |
803 | * 0x10AD in version 0.0.6. The byte in question should follow | |
804 | * the end of the code pointed to by the jump in the beginning | |
805 | * of the firmware. Also, it is read by code located at 0x358. | |
806 | */ | |
807 | variant_offset = be16_to_cpup((__be16 *) &fw->code[FW_VAR_OFFSET_PTR]); | |
808 | if (variant_offset >= fw->size) { | |
809 | printk(KERN_ERR PFX "Invalid firmware variant offset: " | |
810 | "0x%04x\n", variant_offset); | |
811 | retval = -EINVAL; | |
812 | goto fail; | |
813 | } | |
814 | ||
815 | retval = ezusb_8051_cpucs(upriv, 1); | |
816 | if (retval < 0) | |
817 | goto fail; | |
818 | for (addr = 0; addr < fw->size; addr += FW_BUF_SIZE) { | |
819 | /* 0x100-0x300 should be left alone, it contains card | |
820 | * specific data, like USB enumeration information */ | |
821 | if ((addr >= FW_HOLE_START) && (addr < FW_HOLE_END)) | |
822 | continue; | |
823 | ||
824 | memcpy(fw_buffer, &fw->code[addr], FW_BUF_SIZE); | |
825 | if (variant_offset >= addr && | |
826 | variant_offset < addr + FW_BUF_SIZE) { | |
70d2f61f GKH |
827 | netdev_dbg(upriv->dev, |
828 | "Patching card_variant byte at 0x%04X\n", | |
829 | variant_offset); | |
9afac70a DK |
830 | fw_buffer[variant_offset - addr] = FW_VAR_VALUE; |
831 | } | |
832 | retval = usb_control_msg(upriv->udev, | |
833 | usb_sndctrlpipe(upriv->udev, 0), | |
834 | EZUSB_REQUEST_FW_TRANS, | |
835 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | |
836 | | USB_DIR_OUT, | |
837 | addr, 0x0, | |
838 | fw_buffer, FW_BUF_SIZE, | |
839 | DEF_TIMEOUT); | |
840 | ||
841 | if (retval < 0) | |
842 | goto fail; | |
843 | } | |
844 | retval = ezusb_8051_cpucs(upriv, 0); | |
845 | if (retval < 0) | |
846 | goto fail; | |
847 | ||
848 | goto exit; | |
849 | fail: | |
850 | printk(KERN_ERR PFX "Firmware download failed, error %d\n", | |
851 | retval); | |
852 | exit: | |
488ec878 | 853 | kfree(fw_buffer); |
9afac70a DK |
854 | return retval; |
855 | } | |
856 | ||
857 | static int ezusb_access_ltv(struct ezusb_priv *upriv, | |
858 | struct request_context *ctx, | |
859 | u16 length, const void *data, u16 frame_type, | |
264e989a | 860 | void *ans_buff, unsigned ans_size, u16 *ans_length) |
9afac70a DK |
861 | { |
862 | int req_size; | |
863 | int retval = 0; | |
864 | enum ezusb_state state; | |
865 | ||
866 | BUG_ON(in_irq()); | |
867 | ||
868 | if (!upriv->udev) { | |
1105a13b AK |
869 | retval = -ENODEV; |
870 | goto exit; | |
9afac70a DK |
871 | } |
872 | ||
873 | if (upriv->read_urb->status != -EINPROGRESS) | |
874 | err("%s: in urb not pending", __func__); | |
875 | ||
876 | /* protect upriv->reply_count, guarantee sequential numbers */ | |
877 | spin_lock_bh(&upriv->reply_count_lock); | |
878 | req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data, | |
879 | frame_type, upriv->reply_count); | |
880 | usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe, | |
881 | ctx->buf, req_size, | |
882 | ezusb_request_out_callback, ctx); | |
883 | ||
884 | if (ctx->in_rid) | |
885 | upriv->reply_count = ezusb_reply_inc(upriv->reply_count); | |
886 | ||
887 | ezusb_req_enqueue_run(upriv, ctx); | |
888 | ||
889 | spin_unlock_bh(&upriv->reply_count_lock); | |
890 | ||
891 | if (ctx->in_rid) | |
892 | ezusb_req_ctx_wait(upriv, ctx); | |
893 | ||
894 | state = ctx->state; | |
895 | switch (state) { | |
896 | case EZUSB_CTX_COMPLETE: | |
897 | retval = ctx->outurb->status; | |
898 | break; | |
899 | ||
900 | case EZUSB_CTX_QUEUED: | |
901 | case EZUSB_CTX_REQ_SUBMITTED: | |
902 | if (!ctx->in_rid) | |
903 | break; | |
904 | default: | |
905 | err("%s: Unexpected context state %d", __func__, | |
906 | state); | |
907 | /* fall though */ | |
908 | case EZUSB_CTX_REQ_TIMEOUT: | |
909 | case EZUSB_CTX_REQ_FAILED: | |
910 | case EZUSB_CTX_RESP_TIMEOUT: | |
911 | case EZUSB_CTX_REQSUBMIT_FAIL: | |
912 | printk(KERN_ERR PFX "Access failed, resetting (state %d," | |
913 | " reply_count %d)\n", state, upriv->reply_count); | |
914 | upriv->reply_count = 0; | |
915 | if (state == EZUSB_CTX_REQ_TIMEOUT | |
916 | || state == EZUSB_CTX_RESP_TIMEOUT) { | |
917 | printk(KERN_ERR PFX "ctx timed out\n"); | |
918 | retval = -ETIMEDOUT; | |
919 | } else { | |
920 | printk(KERN_ERR PFX "ctx failed\n"); | |
921 | retval = -EFAULT; | |
922 | } | |
923 | goto exit; | |
9afac70a DK |
924 | } |
925 | if (ctx->in_rid) { | |
926 | struct ezusb_packet *ans = ctx->buf; | |
264e989a | 927 | unsigned exp_len; |
9afac70a DK |
928 | |
929 | if (ans->hermes_len != 0) | |
930 | exp_len = le16_to_cpu(ans->hermes_len) * 2 + 12; | |
931 | else | |
932 | exp_len = 14; | |
933 | ||
934 | if (exp_len != ctx->buf_length) { | |
935 | err("%s: length mismatch for RID 0x%04x: " | |
936 | "expected %d, got %d", __func__, | |
937 | ctx->in_rid, exp_len, ctx->buf_length); | |
938 | retval = -EIO; | |
939 | goto exit; | |
940 | } | |
941 | ||
942 | if (ans_buff) | |
264e989a | 943 | memcpy(ans_buff, ans->data, min(exp_len, ans_size)); |
9afac70a DK |
944 | if (ans_length) |
945 | *ans_length = le16_to_cpu(ans->hermes_len); | |
946 | } | |
947 | exit: | |
948 | ezusb_request_context_put(ctx); | |
949 | return retval; | |
950 | } | |
951 | ||
933d5943 | 952 | static int ezusb_write_ltv(struct hermes *hw, int bap, u16 rid, |
9afac70a DK |
953 | u16 length, const void *data) |
954 | { | |
955 | struct ezusb_priv *upriv = hw->priv; | |
956 | u16 frame_type; | |
957 | struct request_context *ctx; | |
958 | ||
959 | if (length == 0) | |
960 | return -EINVAL; | |
961 | ||
962 | length = HERMES_RECLEN_TO_BYTES(length); | |
963 | ||
964 | /* On memory mapped devices HERMES_RID_CNFGROUPADDRESSES can be | |
965 | * set to be empty, but the USB bridge doesn't like it */ | |
966 | if (length == 0) | |
967 | return 0; | |
968 | ||
969 | ctx = ezusb_alloc_ctx(upriv, rid, EZUSB_RID_ACK); | |
970 | if (!ctx) | |
971 | return -ENOMEM; | |
972 | ||
973 | if (rid == EZUSB_RID_TX) | |
974 | frame_type = EZUSB_FRAME_DATA; | |
975 | else | |
976 | frame_type = EZUSB_FRAME_CONTROL; | |
977 | ||
978 | return ezusb_access_ltv(upriv, ctx, length, data, frame_type, | |
979 | NULL, 0, NULL); | |
980 | } | |
981 | ||
933d5943 | 982 | static int ezusb_read_ltv(struct hermes *hw, int bap, u16 rid, |
9afac70a DK |
983 | unsigned bufsize, u16 *length, void *buf) |
984 | { | |
985 | struct ezusb_priv *upriv = hw->priv; | |
986 | struct request_context *ctx; | |
987 | ||
264e989a | 988 | if (bufsize % 2) |
9afac70a DK |
989 | return -EINVAL; |
990 | ||
991 | ctx = ezusb_alloc_ctx(upriv, rid, rid); | |
992 | if (!ctx) | |
993 | return -ENOMEM; | |
994 | ||
995 | return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL, | |
996 | buf, bufsize, length); | |
997 | } | |
998 | ||
933d5943 | 999 | static int ezusb_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1, |
9afac70a DK |
1000 | u16 parm2, struct hermes_response *resp) |
1001 | { | |
1002 | struct ezusb_priv *upriv = hw->priv; | |
1003 | struct request_context *ctx; | |
1004 | ||
1005 | __le16 data[4] = { | |
1006 | cpu_to_le16(cmd), | |
1007 | cpu_to_le16(parm0), | |
1008 | cpu_to_le16(parm1), | |
1009 | cpu_to_le16(parm2), | |
1010 | }; | |
70d2f61f GKH |
1011 | netdev_dbg(upriv->dev, |
1012 | "0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X\n", cmd, | |
1013 | parm0, parm1, parm2); | |
9afac70a DK |
1014 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); |
1015 | if (!ctx) | |
1016 | return -ENOMEM; | |
1017 | ||
1018 | return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1019 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1020 | } | |
1021 | ||
933d5943 | 1022 | static int ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, |
9afac70a DK |
1023 | struct hermes_response *resp) |
1024 | { | |
1025 | struct ezusb_priv *upriv = hw->priv; | |
1026 | struct request_context *ctx; | |
1027 | ||
1028 | __le16 data[4] = { | |
1029 | cpu_to_le16(cmd), | |
1030 | cpu_to_le16(parm0), | |
1031 | 0, | |
1032 | 0, | |
1033 | }; | |
70d2f61f | 1034 | netdev_dbg(upriv->dev, "0x%04X, parm0 0x%04X\n", cmd, parm0); |
9afac70a DK |
1035 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK); |
1036 | if (!ctx) | |
1037 | return -ENOMEM; | |
1038 | ||
1039 | return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1040 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1041 | } | |
1042 | ||
1043 | static int ezusb_bap_pread(struct hermes *hw, int bap, | |
1044 | void *buf, int len, u16 id, u16 offset) | |
1045 | { | |
1046 | struct ezusb_priv *upriv = hw->priv; | |
1047 | struct ezusb_packet *ans = (void *) upriv->read_urb->transfer_buffer; | |
1048 | int actual_length = upriv->read_urb->actual_length; | |
1049 | ||
1050 | if (id == EZUSB_RID_RX) { | |
1051 | if ((sizeof(*ans) + offset + len) > actual_length) { | |
1052 | printk(KERN_ERR PFX "BAP read beyond buffer end " | |
1053 | "in rx frame\n"); | |
1054 | return -EINVAL; | |
1055 | } | |
1056 | memcpy(buf, ans->data + offset, len); | |
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | if (EZUSB_IS_INFO(id)) { | |
1061 | /* Include 4 bytes for length/type */ | |
1062 | if ((sizeof(*ans) + offset + len - 4) > actual_length) { | |
1063 | printk(KERN_ERR PFX "BAP read beyond buffer end " | |
1064 | "in info frame\n"); | |
1065 | return -EFAULT; | |
1066 | } | |
1067 | memcpy(buf, ans->data + offset - 4, len); | |
1068 | } else { | |
1069 | printk(KERN_ERR PFX "Unexpected fid 0x%04x\n", id); | |
1070 | return -EINVAL; | |
1071 | } | |
1072 | ||
1073 | return 0; | |
1074 | } | |
1075 | ||
07cefe7a DK |
1076 | static int ezusb_read_pda(struct hermes *hw, __le16 *pda, |
1077 | u32 pda_addr, u16 pda_len) | |
1078 | { | |
1079 | struct ezusb_priv *upriv = hw->priv; | |
1080 | struct request_context *ctx; | |
1081 | __le16 data[] = { | |
1082 | cpu_to_le16(pda_addr & 0xffff), | |
1083 | cpu_to_le16(pda_len - 4) | |
1084 | }; | |
1085 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_READ_PDA, EZUSB_RID_READ_PDA); | |
1086 | if (!ctx) | |
1087 | return -ENOMEM; | |
1088 | ||
1089 | /* wl_lkm does not include PDA size in the PDA area. | |
1090 | * We will pad the information into pda, so other routines | |
1091 | * don't have to be modified */ | |
1092 | pda[0] = cpu_to_le16(pda_len - 2); | |
1093 | /* Includes CFG_PROD_DATA but not itself */ | |
1094 | pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */ | |
1095 | ||
1096 | return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1097 | EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4, | |
1098 | NULL); | |
1099 | } | |
1100 | ||
1101 | static int ezusb_program_init(struct hermes *hw, u32 entry_point) | |
1102 | { | |
1103 | struct ezusb_priv *upriv = hw->priv; | |
1104 | struct request_context *ctx; | |
1105 | __le32 data = cpu_to_le32(entry_point); | |
1106 | ||
1107 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_INIT, EZUSB_RID_ACK); | |
1108 | if (!ctx) | |
1109 | return -ENOMEM; | |
1110 | ||
1111 | return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1112 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1113 | } | |
1114 | ||
1115 | static int ezusb_program_end(struct hermes *hw) | |
1116 | { | |
1117 | struct ezusb_priv *upriv = hw->priv; | |
1118 | struct request_context *ctx; | |
1119 | ||
1120 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_END, EZUSB_RID_ACK); | |
1121 | if (!ctx) | |
1122 | return -ENOMEM; | |
1123 | ||
1124 | return ezusb_access_ltv(upriv, ctx, 0, NULL, | |
1125 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1126 | } | |
1127 | ||
1128 | static int ezusb_program_bytes(struct hermes *hw, const char *buf, | |
1129 | u32 addr, u32 len) | |
1130 | { | |
1131 | struct ezusb_priv *upriv = hw->priv; | |
1132 | struct request_context *ctx; | |
1133 | __le32 data = cpu_to_le32(addr); | |
1134 | int err; | |
1135 | ||
1136 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_SET_ADDR, EZUSB_RID_ACK); | |
1137 | if (!ctx) | |
1138 | return -ENOMEM; | |
1139 | ||
1140 | err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data, | |
1141 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1142 | if (err) | |
1143 | return err; | |
1144 | ||
1145 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_BYTES, EZUSB_RID_ACK); | |
1146 | if (!ctx) | |
1147 | return -ENOMEM; | |
1148 | ||
1149 | return ezusb_access_ltv(upriv, ctx, len, buf, | |
1150 | EZUSB_FRAME_CONTROL, NULL, 0, NULL); | |
1151 | } | |
1152 | ||
1153 | static int ezusb_program(struct hermes *hw, const char *buf, | |
1154 | u32 addr, u32 len) | |
1155 | { | |
1156 | u32 ch_addr; | |
1157 | u32 ch_len; | |
1158 | int err = 0; | |
1159 | ||
1160 | /* We can only send 2048 bytes out of the bulk xmit at a time, | |
1161 | * so we have to split any programming into chunks of <2048 | |
1162 | * bytes. */ | |
1163 | ||
1164 | ch_len = (len < MAX_DL_SIZE) ? len : MAX_DL_SIZE; | |
1165 | ch_addr = addr; | |
1166 | ||
1167 | while (ch_addr < (addr + len)) { | |
1168 | pr_debug("Programming subblock of length %d " | |
1169 | "to address 0x%08x. Data @ %p\n", | |
1170 | ch_len, ch_addr, &buf[ch_addr - addr]); | |
1171 | ||
1172 | err = ezusb_program_bytes(hw, &buf[ch_addr - addr], | |
1173 | ch_addr, ch_len); | |
1174 | if (err) | |
1175 | break; | |
1176 | ||
1177 | ch_addr += ch_len; | |
1178 | ch_len = ((addr + len - ch_addr) < MAX_DL_SIZE) ? | |
1179 | (addr + len - ch_addr) : MAX_DL_SIZE; | |
1180 | } | |
1181 | ||
1182 | return err; | |
1183 | } | |
1184 | ||
9afac70a DK |
1185 | static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev) |
1186 | { | |
1187 | struct orinoco_private *priv = ndev_priv(dev); | |
1188 | struct net_device_stats *stats = &priv->stats; | |
1189 | struct ezusb_priv *upriv = priv->card; | |
933d5943 | 1190 | u8 mic[MICHAEL_MIC_LEN + 1]; |
9afac70a | 1191 | int err = 0; |
bac6fafd | 1192 | int tx_control; |
9afac70a DK |
1193 | unsigned long flags; |
1194 | struct request_context *ctx; | |
1195 | u8 *buf; | |
1196 | int tx_size; | |
1197 | ||
1198 | if (!netif_running(dev)) { | |
1199 | printk(KERN_ERR "%s: Tx on stopped device!\n", | |
1200 | dev->name); | |
1201 | return NETDEV_TX_BUSY; | |
1202 | } | |
1203 | ||
1204 | if (netif_queue_stopped(dev)) { | |
1205 | printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", | |
1206 | dev->name); | |
1207 | return NETDEV_TX_BUSY; | |
1208 | } | |
1209 | ||
1210 | if (orinoco_lock(priv, &flags) != 0) { | |
1211 | printk(KERN_ERR | |
bac6fafd | 1212 | "%s: ezusb_xmit() called while hw_unavailable\n", |
9afac70a DK |
1213 | dev->name); |
1214 | return NETDEV_TX_BUSY; | |
1215 | } | |
1216 | ||
1217 | if (!netif_carrier_ok(dev) || | |
1218 | (priv->iw_mode == NL80211_IFTYPE_MONITOR)) { | |
1219 | /* Oops, the firmware hasn't established a connection, | |
1220 | silently drop the packet (this seems to be the | |
1221 | safest approach). */ | |
bac6fafd | 1222 | goto drop; |
9afac70a DK |
1223 | } |
1224 | ||
bac6fafd DK |
1225 | /* Check packet length */ |
1226 | if (skb->len < ETH_HLEN) | |
1227 | goto drop; | |
1228 | ||
9afac70a DK |
1229 | ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0); |
1230 | if (!ctx) | |
bac6fafd | 1231 | goto busy; |
9afac70a DK |
1232 | |
1233 | memset(ctx->buf, 0, BULK_BUF_SIZE); | |
1234 | buf = ctx->buf->data; | |
1235 | ||
bac6fafd DK |
1236 | tx_control = 0; |
1237 | ||
1238 | err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, | |
1239 | &mic[0]); | |
1240 | if (err) | |
1241 | goto drop; | |
1242 | ||
1243 | { | |
1244 | __le16 *tx_cntl = (__le16 *)buf; | |
1245 | *tx_cntl = cpu_to_le16(tx_control); | |
1246 | buf += sizeof(*tx_cntl); | |
9afac70a DK |
1247 | } |
1248 | ||
bac6fafd DK |
1249 | memcpy(buf, skb->data, skb->len); |
1250 | buf += skb->len; | |
1251 | ||
1252 | if (tx_control & HERMES_TXCTRL_MIC) { | |
1253 | u8 *m = mic; | |
1254 | /* Mic has been offset so it can be copied to an even | |
1255 | * address. We're copying eveything anyway, so we | |
1256 | * don't need to copy that first byte. */ | |
1257 | if (skb->len % 2) | |
1258 | m++; | |
1259 | memcpy(buf, m, MICHAEL_MIC_LEN); | |
1260 | buf += MICHAEL_MIC_LEN; | |
1261 | } | |
9afac70a DK |
1262 | |
1263 | /* Finally, we actually initiate the send */ | |
1264 | netif_stop_queue(dev); | |
1265 | ||
1266 | /* The card may behave better if we send evenly sized usb transfers */ | |
1267 | tx_size = ALIGN(buf - ctx->buf->data, 2); | |
1268 | ||
1269 | err = ezusb_access_ltv(upriv, ctx, tx_size, NULL, | |
1270 | EZUSB_FRAME_DATA, NULL, 0, NULL); | |
1271 | ||
1272 | if (err) { | |
1273 | netif_start_queue(dev); | |
1274 | if (net_ratelimit()) | |
1275 | printk(KERN_ERR "%s: Error %d transmitting packet\n", | |
1276 | dev->name, err); | |
bac6fafd | 1277 | goto busy; |
9afac70a DK |
1278 | } |
1279 | ||
1280 | dev->trans_start = jiffies; | |
bac6fafd DK |
1281 | stats->tx_bytes += skb->len; |
1282 | goto ok; | |
9afac70a | 1283 | |
bac6fafd DK |
1284 | drop: |
1285 | stats->tx_errors++; | |
1286 | stats->tx_dropped++; | |
9afac70a | 1287 | |
bac6fafd DK |
1288 | ok: |
1289 | orinoco_unlock(priv, &flags); | |
9afac70a | 1290 | dev_kfree_skb(skb); |
9afac70a DK |
1291 | return NETDEV_TX_OK; |
1292 | ||
bac6fafd | 1293 | busy: |
9afac70a DK |
1294 | orinoco_unlock(priv, &flags); |
1295 | return NETDEV_TX_BUSY; | |
1296 | } | |
1297 | ||
1298 | static int ezusb_allocate(struct hermes *hw, u16 size, u16 *fid) | |
1299 | { | |
1300 | *fid = EZUSB_RID_TX; | |
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | ||
1305 | static int ezusb_hard_reset(struct orinoco_private *priv) | |
1306 | { | |
1307 | struct ezusb_priv *upriv = priv->card; | |
1308 | int retval = ezusb_8051_cpucs(upriv, 1); | |
1309 | ||
1310 | if (retval < 0) { | |
1311 | err("Failed to reset"); | |
1312 | return retval; | |
1313 | } | |
1314 | ||
1315 | retval = ezusb_8051_cpucs(upriv, 0); | |
1316 | if (retval < 0) { | |
1317 | err("Failed to unreset"); | |
1318 | return retval; | |
1319 | } | |
1320 | ||
70d2f61f | 1321 | netdev_dbg(upriv->dev, "sending control message\n"); |
9afac70a DK |
1322 | retval = usb_control_msg(upriv->udev, |
1323 | usb_sndctrlpipe(upriv->udev, 0), | |
1324 | EZUSB_REQUEST_TRIGER, | |
1325 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | | |
1326 | USB_DIR_OUT, 0x0, 0x0, NULL, 0, | |
1327 | DEF_TIMEOUT); | |
1328 | if (retval < 0) { | |
1329 | err("EZUSB_REQUEST_TRIGER failed retval %d", retval); | |
1330 | return retval; | |
1331 | } | |
1332 | #if 0 | |
1333 | dbg("Sending EZUSB_REQUEST_TRIG_AC"); | |
1334 | retval = usb_control_msg(upriv->udev, | |
1335 | usb_sndctrlpipe(upriv->udev, 0), | |
1336 | EZUSB_REQUEST_TRIG_AC, | |
1337 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | | |
1338 | USB_DIR_OUT, 0x00FA, 0x0, NULL, 0, | |
1339 | DEF_TIMEOUT); | |
1340 | if (retval < 0) { | |
1341 | err("EZUSB_REQUEST_TRIG_AC failed retval %d", retval); | |
1342 | return retval; | |
1343 | } | |
1344 | #endif | |
1345 | ||
1346 | return 0; | |
1347 | } | |
1348 | ||
1349 | ||
933d5943 | 1350 | static int ezusb_init(struct hermes *hw) |
9afac70a DK |
1351 | { |
1352 | struct ezusb_priv *upriv = hw->priv; | |
1353 | int retval; | |
1354 | ||
1355 | BUG_ON(in_interrupt()); | |
1356 | BUG_ON(!upriv); | |
1357 | ||
1358 | upriv->reply_count = 0; | |
1359 | /* Write the MAGIC number on the simulated registers to keep | |
1360 | * orinoco.c happy */ | |
1361 | hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC); | |
1362 | hermes_write_regn(hw, RXFID, EZUSB_RID_RX); | |
1363 | ||
1364 | usb_kill_urb(upriv->read_urb); | |
1365 | ezusb_submit_in_urb(upriv); | |
1366 | ||
1367 | retval = ezusb_write_ltv(hw, 0, EZUSB_RID_INIT1, | |
1368 | HERMES_BYTES_TO_RECLEN(2), "\x10\x00"); | |
1369 | if (retval < 0) { | |
1370 | printk(KERN_ERR PFX "EZUSB_RID_INIT1 error %d\n", retval); | |
1371 | return retval; | |
1372 | } | |
1373 | ||
1374 | retval = ezusb_docmd_wait(hw, HERMES_CMD_INIT, 0, NULL); | |
1375 | if (retval < 0) { | |
1376 | printk(KERN_ERR PFX "HERMES_CMD_INIT error %d\n", retval); | |
1377 | return retval; | |
1378 | } | |
1379 | ||
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | static void ezusb_bulk_in_callback(struct urb *urb) | |
1384 | { | |
1385 | struct ezusb_priv *upriv = (struct ezusb_priv *) urb->context; | |
1386 | struct ezusb_packet *ans = urb->transfer_buffer; | |
1387 | u16 crc; | |
1388 | u16 hermes_rid; | |
1389 | ||
70d2f61f | 1390 | if (upriv->udev == NULL) |
9afac70a | 1391 | return; |
9afac70a DK |
1392 | |
1393 | if (urb->status == -ETIMEDOUT) { | |
1394 | /* When a device gets unplugged we get this every time | |
1395 | * we resubmit, flooding the logs. Since we don't use | |
1396 | * USB timeouts, it shouldn't happen any other time*/ | |
1397 | pr_warning("%s: urb timed out, not resubmiting", __func__); | |
1398 | return; | |
1399 | } | |
1400 | if (urb->status == -ECONNABORTED) { | |
1401 | pr_warning("%s: connection abort, resubmiting urb", | |
1402 | __func__); | |
1403 | goto resubmit; | |
1404 | } | |
1405 | if ((urb->status == -EILSEQ) | |
1406 | || (urb->status == -ENOENT) | |
1407 | || (urb->status == -ECONNRESET)) { | |
70d2f61f GKH |
1408 | netdev_dbg(upriv->dev, "status %d, not resubmiting\n", |
1409 | urb->status); | |
9afac70a DK |
1410 | return; |
1411 | } | |
1412 | if (urb->status) | |
70d2f61f GKH |
1413 | netdev_dbg(upriv->dev, "status: %d length: %d\n", |
1414 | urb->status, urb->actual_length); | |
9afac70a DK |
1415 | if (urb->actual_length < sizeof(*ans)) { |
1416 | err("%s: short read, ignoring", __func__); | |
1417 | goto resubmit; | |
1418 | } | |
1419 | crc = build_crc(ans); | |
1420 | if (le16_to_cpu(ans->crc) != crc) { | |
1421 | err("CRC error, ignoring packet"); | |
1422 | goto resubmit; | |
1423 | } | |
1424 | ||
1425 | hermes_rid = le16_to_cpu(ans->hermes_rid); | |
1426 | if ((hermes_rid != EZUSB_RID_RX) && !EZUSB_IS_INFO(hermes_rid)) { | |
1427 | ezusb_request_in_callback(upriv, urb); | |
1428 | } else if (upriv->dev) { | |
1429 | struct net_device *dev = upriv->dev; | |
1430 | struct orinoco_private *priv = ndev_priv(dev); | |
933d5943 | 1431 | struct hermes *hw = &priv->hw; |
9afac70a DK |
1432 | |
1433 | if (hermes_rid == EZUSB_RID_RX) { | |
1434 | __orinoco_ev_rx(dev, hw); | |
1435 | } else { | |
1436 | hermes_write_regn(hw, INFOFID, | |
1437 | le16_to_cpu(ans->hermes_rid)); | |
1438 | __orinoco_ev_info(dev, hw); | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | resubmit: | |
1443 | if (upriv->udev) | |
1444 | ezusb_submit_in_urb(upriv); | |
1445 | } | |
1446 | ||
1447 | static inline void ezusb_delete(struct ezusb_priv *upriv) | |
1448 | { | |
1449 | struct net_device *dev; | |
1450 | struct list_head *item; | |
1451 | struct list_head *tmp_item; | |
1452 | unsigned long flags; | |
1453 | ||
1454 | BUG_ON(in_interrupt()); | |
1455 | BUG_ON(!upriv); | |
1456 | ||
1457 | dev = upriv->dev; | |
1458 | mutex_lock(&upriv->mtx); | |
1459 | ||
1460 | upriv->udev = NULL; /* No timer will be rearmed from here */ | |
1461 | ||
1462 | usb_kill_urb(upriv->read_urb); | |
1463 | ||
1464 | spin_lock_irqsave(&upriv->req_lock, flags); | |
1465 | list_for_each_safe(item, tmp_item, &upriv->req_active) { | |
1466 | struct request_context *ctx; | |
1467 | int err; | |
1468 | ||
1469 | ctx = list_entry(item, struct request_context, list); | |
1470 | atomic_inc(&ctx->refcount); | |
1471 | ||
1472 | ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; | |
1473 | err = usb_unlink_urb(ctx->outurb); | |
1474 | ||
1475 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
1476 | if (err == -EINPROGRESS) | |
1477 | wait_for_completion(&ctx->done); | |
1478 | ||
1479 | del_timer_sync(&ctx->timer); | |
1480 | /* FIXME: there is an slight chance for the irq handler to | |
1481 | * be running */ | |
1482 | if (!list_empty(&ctx->list)) | |
1483 | ezusb_ctx_complete(ctx); | |
1484 | ||
1485 | ezusb_request_context_put(ctx); | |
1486 | spin_lock_irqsave(&upriv->req_lock, flags); | |
1487 | } | |
1488 | spin_unlock_irqrestore(&upriv->req_lock, flags); | |
1489 | ||
1490 | list_for_each_safe(item, tmp_item, &upriv->req_pending) | |
1491 | ezusb_ctx_complete(list_entry(item, | |
1492 | struct request_context, list)); | |
1493 | ||
48d5548f | 1494 | if (upriv->read_urb && upriv->read_urb->status == -EINPROGRESS) |
9afac70a DK |
1495 | printk(KERN_ERR PFX "Some URB in progress\n"); |
1496 | ||
1497 | mutex_unlock(&upriv->mtx); | |
1498 | ||
48d5548f DC |
1499 | if (upriv->read_urb) { |
1500 | kfree(upriv->read_urb->transfer_buffer); | |
9afac70a | 1501 | usb_free_urb(upriv->read_urb); |
48d5548f DC |
1502 | } |
1503 | kfree(upriv->bap_buf); | |
9afac70a DK |
1504 | if (upriv->dev) { |
1505 | struct orinoco_private *priv = ndev_priv(upriv->dev); | |
1506 | orinoco_if_del(priv); | |
1507 | free_orinocodev(priv); | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | static void ezusb_lock_irqsave(spinlock_t *lock, | |
1512 | unsigned long *flags) __acquires(lock) | |
1513 | { | |
1514 | spin_lock_bh(lock); | |
1515 | } | |
1516 | ||
1517 | static void ezusb_unlock_irqrestore(spinlock_t *lock, | |
1518 | unsigned long *flags) __releases(lock) | |
1519 | { | |
1520 | spin_unlock_bh(lock); | |
1521 | } | |
1522 | ||
1523 | static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock) | |
1524 | { | |
1525 | spin_lock_bh(lock); | |
1526 | } | |
1527 | ||
1528 | static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock) | |
1529 | { | |
1530 | spin_unlock_bh(lock); | |
1531 | } | |
1532 | ||
1533 | static const struct hermes_ops ezusb_ops = { | |
1534 | .init = ezusb_init, | |
1535 | .cmd_wait = ezusb_docmd_wait, | |
1536 | .init_cmd_wait = ezusb_doicmd_wait, | |
1537 | .allocate = ezusb_allocate, | |
1538 | .read_ltv = ezusb_read_ltv, | |
1539 | .write_ltv = ezusb_write_ltv, | |
1540 | .bap_pread = ezusb_bap_pread, | |
07cefe7a DK |
1541 | .read_pda = ezusb_read_pda, |
1542 | .program_init = ezusb_program_init, | |
1543 | .program_end = ezusb_program_end, | |
1544 | .program = ezusb_program, | |
9afac70a DK |
1545 | .lock_irqsave = ezusb_lock_irqsave, |
1546 | .unlock_irqrestore = ezusb_unlock_irqrestore, | |
1547 | .lock_irq = ezusb_lock_irq, | |
1548 | .unlock_irq = ezusb_unlock_irq, | |
1549 | }; | |
1550 | ||
1551 | static const struct net_device_ops ezusb_netdev_ops = { | |
1552 | .ndo_open = orinoco_open, | |
1553 | .ndo_stop = orinoco_stop, | |
1554 | .ndo_start_xmit = ezusb_xmit, | |
afc4b13d | 1555 | .ndo_set_rx_mode = orinoco_set_multicast_list, |
9afac70a DK |
1556 | .ndo_change_mtu = orinoco_change_mtu, |
1557 | .ndo_set_mac_address = eth_mac_addr, | |
1558 | .ndo_validate_addr = eth_validate_addr, | |
1559 | .ndo_tx_timeout = orinoco_tx_timeout, | |
1560 | .ndo_get_stats = orinoco_get_stats, | |
1561 | }; | |
1562 | ||
1563 | static int ezusb_probe(struct usb_interface *interface, | |
1564 | const struct usb_device_id *id) | |
1565 | { | |
1566 | struct usb_device *udev = interface_to_usbdev(interface); | |
1567 | struct orinoco_private *priv; | |
933d5943 | 1568 | struct hermes *hw; |
9afac70a DK |
1569 | struct ezusb_priv *upriv = NULL; |
1570 | struct usb_interface_descriptor *iface_desc; | |
1571 | struct usb_endpoint_descriptor *ep; | |
4363b577 | 1572 | const struct firmware *fw_entry = NULL; |
9afac70a DK |
1573 | int retval = 0; |
1574 | int i; | |
1575 | ||
1576 | priv = alloc_orinocodev(sizeof(*upriv), &udev->dev, | |
1577 | ezusb_hard_reset, NULL); | |
1578 | if (!priv) { | |
1579 | err("Couldn't allocate orinocodev"); | |
1580 | goto exit; | |
1581 | } | |
1582 | ||
1583 | hw = &priv->hw; | |
1584 | ||
1585 | upriv = priv->card; | |
1586 | ||
1587 | mutex_init(&upriv->mtx); | |
1588 | spin_lock_init(&upriv->reply_count_lock); | |
1589 | ||
1590 | spin_lock_init(&upriv->req_lock); | |
1591 | INIT_LIST_HEAD(&upriv->req_pending); | |
1592 | INIT_LIST_HEAD(&upriv->req_active); | |
1593 | ||
1594 | upriv->udev = udev; | |
1595 | ||
1596 | hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake; | |
1597 | hw->reg_spacing = HERMES_16BIT_REGSPACING; | |
1598 | hw->priv = upriv; | |
1599 | hw->ops = &ezusb_ops; | |
1600 | ||
1601 | /* set up the endpoint information */ | |
1602 | /* check out the endpoints */ | |
1603 | ||
1604 | iface_desc = &interface->altsetting[0].desc; | |
1605 | for (i = 0; i < iface_desc->bNumEndpoints; ++i) { | |
1606 | ep = &interface->altsetting[0].endpoint[i].desc; | |
1607 | ||
1608 | if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
1609 | == USB_DIR_IN) && | |
1610 | ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) | |
1611 | == USB_ENDPOINT_XFER_BULK)) { | |
1612 | /* we found a bulk in endpoint */ | |
1613 | if (upriv->read_urb != NULL) { | |
1614 | pr_warning("Found a second bulk in ep, ignored"); | |
1615 | continue; | |
1616 | } | |
1617 | ||
1618 | upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1619 | if (!upriv->read_urb) { | |
1620 | err("No free urbs available"); | |
1621 | goto error; | |
1622 | } | |
1623 | if (le16_to_cpu(ep->wMaxPacketSize) != 64) | |
1624 | pr_warning("bulk in: wMaxPacketSize!= 64"); | |
1625 | if (ep->bEndpointAddress != (2 | USB_DIR_IN)) | |
1626 | pr_warning("bulk in: bEndpointAddress: %d", | |
1627 | ep->bEndpointAddress); | |
1628 | upriv->read_pipe = usb_rcvbulkpipe(udev, | |
1629 | ep-> | |
1630 | bEndpointAddress); | |
1631 | upriv->read_urb->transfer_buffer = | |
1632 | kmalloc(BULK_BUF_SIZE, GFP_KERNEL); | |
1633 | if (!upriv->read_urb->transfer_buffer) { | |
1634 | err("Couldn't allocate IN buffer"); | |
1635 | goto error; | |
1636 | } | |
1637 | } | |
1638 | ||
1639 | if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
1640 | == USB_DIR_OUT) && | |
1641 | ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) | |
1642 | == USB_ENDPOINT_XFER_BULK)) { | |
1643 | /* we found a bulk out endpoint */ | |
1644 | if (upriv->bap_buf != NULL) { | |
1645 | pr_warning("Found a second bulk out ep, ignored"); | |
1646 | continue; | |
1647 | } | |
1648 | ||
1649 | if (le16_to_cpu(ep->wMaxPacketSize) != 64) | |
1650 | pr_warning("bulk out: wMaxPacketSize != 64"); | |
1651 | if (ep->bEndpointAddress != 2) | |
1652 | pr_warning("bulk out: bEndpointAddress: %d", | |
1653 | ep->bEndpointAddress); | |
1654 | upriv->write_pipe = usb_sndbulkpipe(udev, | |
1655 | ep-> | |
1656 | bEndpointAddress); | |
1657 | upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL); | |
1658 | if (!upriv->bap_buf) { | |
1659 | err("Couldn't allocate bulk_out_buffer"); | |
1660 | goto error; | |
1661 | } | |
1662 | } | |
1663 | } | |
1664 | if (!upriv->bap_buf || !upriv->read_urb) { | |
1665 | err("Didn't find the required bulk endpoints"); | |
1666 | goto error; | |
1667 | } | |
1668 | ||
1669 | if (request_firmware(&fw_entry, "orinoco_ezusb_fw", | |
1670 | &interface->dev) == 0) { | |
1671 | firmware.size = fw_entry->size; | |
1672 | firmware.code = fw_entry->data; | |
1673 | } | |
1674 | if (firmware.size && firmware.code) { | |
fe5d9624 | 1675 | if (ezusb_firmware_download(upriv, &firmware) < 0) |
488ec878 | 1676 | goto error; |
9afac70a DK |
1677 | } else { |
1678 | err("No firmware to download"); | |
1679 | goto error; | |
1680 | } | |
1681 | ||
1682 | if (ezusb_hard_reset(priv) < 0) { | |
1683 | err("Cannot reset the device"); | |
1684 | goto error; | |
1685 | } | |
1686 | ||
1687 | /* If the firmware is already downloaded orinoco.c will call | |
1688 | * ezusb_init but if the firmware is not already there, that will make | |
1689 | * the kernel very unstable, so we try initializing here and quit in | |
1690 | * case of error */ | |
1691 | if (ezusb_init(hw) < 0) { | |
1692 | err("Couldn't initialize the device"); | |
1693 | err("Firmware may not be downloaded or may be wrong."); | |
1694 | goto error; | |
1695 | } | |
1696 | ||
1697 | /* Initialise the main driver */ | |
1698 | if (orinoco_init(priv) != 0) { | |
1699 | err("orinoco_init() failed\n"); | |
1700 | goto error; | |
1701 | } | |
1702 | ||
1703 | if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) { | |
1704 | upriv->dev = NULL; | |
1705 | err("%s: orinoco_if_add() failed", __func__); | |
1706 | goto error; | |
1707 | } | |
1708 | upriv->dev = priv->ndev; | |
1709 | ||
1710 | goto exit; | |
1711 | ||
1712 | error: | |
1713 | ezusb_delete(upriv); | |
1714 | if (upriv->dev) { | |
1715 | /* upriv->dev was 0, so ezusb_delete() didn't free it */ | |
1716 | free_orinocodev(priv); | |
1717 | } | |
1718 | upriv = NULL; | |
1719 | retval = -EFAULT; | |
1720 | exit: | |
1721 | if (fw_entry) { | |
1722 | firmware.code = NULL; | |
1723 | firmware.size = 0; | |
1724 | release_firmware(fw_entry); | |
1725 | } | |
1726 | usb_set_intfdata(interface, upriv); | |
1727 | return retval; | |
1728 | } | |
1729 | ||
1730 | ||
1731 | static void ezusb_disconnect(struct usb_interface *intf) | |
1732 | { | |
1733 | struct ezusb_priv *upriv = usb_get_intfdata(intf); | |
1734 | usb_set_intfdata(intf, NULL); | |
1735 | ezusb_delete(upriv); | |
1736 | printk(KERN_INFO PFX "Disconnected\n"); | |
1737 | } | |
1738 | ||
1739 | ||
1740 | /* usb specific object needed to register this driver with the usb subsystem */ | |
1741 | static struct usb_driver orinoco_driver = { | |
1742 | .name = DRIVER_NAME, | |
1743 | .probe = ezusb_probe, | |
1744 | .disconnect = ezusb_disconnect, | |
1745 | .id_table = ezusb_table, | |
e1f12eb6 | 1746 | .disable_hub_initiated_lpm = 1, |
9afac70a DK |
1747 | }; |
1748 | ||
d632eb1b | 1749 | module_usb_driver(orinoco_driver); |
9afac70a DK |
1750 | |
1751 | MODULE_AUTHOR("Manuel Estrada Sainz"); | |
933d5943 | 1752 | MODULE_DESCRIPTION("Driver for Orinoco wireless LAN cards using EZUSB bridge"); |
9afac70a | 1753 | MODULE_LICENSE("Dual MPL/GPL"); |