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at76c50x-usb: convert at76_debug to an unsigned int
[linux/fpc-iii.git] / drivers / net / wireless / at76c50x-usb.c
blobaa06b90664d3d7a3b909400a38e87047081dc8e5
1 /*
2 * at76c503/at76c505 USB driver
3 *
4 * Copyright (c) 2002 - 2003 Oliver Kurth
5 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
6 * Copyright (c) 2004 Nick Jones
7 * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
8 * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
9 * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This file is part of the Berlios driver for WLAN USB devices based on the
17 * Atmel AT76C503A/505/505A.
18 *
19 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
20 *
21 * TODO for the mac80211 port:
22 * o adhoc support
23 * o RTS/CTS support
24 * o Power Save Mode support
25 * o support for short/long preambles
26 * o export variables through debugfs/sysfs
27 * o remove hex2str
28 * o remove mac2str
29 */
30
31 #include <linux/init.h>
32 #include <linux/kernel.h>
33 #include <linux/sched.h>
34 #include <linux/errno.h>
35 #include <linux/slab.h>
36 #include <linux/module.h>
37 #include <linux/spinlock.h>
38 #include <linux/list.h>
39 #include <linux/usb.h>
40 #include <linux/netdevice.h>
41 #include <linux/if_arp.h>
42 #include <linux/etherdevice.h>
43 #include <linux/ethtool.h>
44 #include <linux/wireless.h>
45 #include <net/iw_handler.h>
46 #include <net/ieee80211_radiotap.h>
47 #include <linux/firmware.h>
48 #include <linux/leds.h>
49 #include <net/mac80211.h>
50
51 #include "at76c50x-usb.h"
52
53 /* Version information */
54 #define DRIVER_NAME "at76c50x-usb"
55 #define DRIVER_VERSION "0.17"
56 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
57
58 /* at76_debug bits */
59 #define DBG_PROGRESS 0x00000001 /* authentication/accociation */
60 #define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */
61 #define DBG_IOCTL 0x00000004 /* ioctl calls / settings */
62 #define DBG_MAC_STATE 0x00000008 /* MAC state transitions */
63 #define DBG_TX_DATA 0x00000010 /* tx header */
64 #define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */
65 #define DBG_TX_MGMT 0x00000040 /* tx management */
66 #define DBG_RX_DATA 0x00000080 /* rx data header */
67 #define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */
68 #define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */
69 #define DBG_RX_BEACON 0x00000400 /* rx beacon */
70 #define DBG_RX_CTRL 0x00000800 /* rx control */
71 #define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */
72 #define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */
73 #define DBG_DEVSTART 0x00004000 /* fw download, device start */
74 #define DBG_URB 0x00008000 /* rx urb status, ... */
75 #define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */
76 #define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */
77 #define DBG_PM 0x00040000 /* power management settings */
78 #define DBG_BSS_MATCH 0x00080000 /* BSS match failures */
79 #define DBG_PARAMS 0x00100000 /* show configured parameters */
80 #define DBG_WAIT_COMPLETE 0x00200000 /* command completion */
81 #define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */
82 #define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */
83 #define DBG_MONITOR_MODE 0x01000000 /* monitor mode */
84 #define DBG_MIB 0x02000000 /* dump all MIBs on startup */
85 #define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */
86 #define DBG_WE_EVENTS 0x08000000 /* dump wireless events */
87 #define DBG_FW 0x10000000 /* firmware download */
88 #define DBG_DFU 0x20000000 /* device firmware upgrade */
89 #define DBG_CMD 0x40000000
90 #define DBG_MAC80211 0x80000000
91
92 #define DBG_DEFAULTS 0
93
94 /* Use our own dbg macro */
95 #define at76_dbg(bits, format, arg...) \
96 do { \
97 if (at76_debug & (bits)) \
98 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
99 ## arg); \
100 } while (0)
101
102 #define at76_dbg_dump(bits, buf, len, format, arg...) \
103 do { \
104 if (at76_debug & (bits)) { \
105 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
106 ## arg); \
107 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, \
108 buf, len); \
109 } \
110 } while (0)
111
112 static uint at76_debug = DBG_DEFAULTS;
113
114 /* Protect against concurrent firmware loading and parsing */
115 static struct mutex fw_mutex;
116
117 static struct fwentry firmwares[] = {
118 [0] = { "" },
119 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
120 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
121 [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
122 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
123 [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
124 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
125 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
126 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
127 };
128
129 #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
130
131 static struct usb_device_id dev_table[] = {
132 /*
133 * at76c503-i3861
134 */
135 /* Generic AT76C503/3861 device */
136 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
137 /* Linksys WUSB11 v2.1/v2.6 */
138 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
139 /* Netgear MA101 rev. A */
140 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
141 /* Tekram U300C / Allnet ALL0193 */
142 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
143 /* HP HN210W J7801A */
144 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
145 /* Sitecom/Z-Com/Zyxel M4Y-750 */
146 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
147 /* Dynalink/Askey WLL013 (intersil) */
148 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
149 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
150 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
151 /* BenQ AWL300 */
152 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
153 /* Addtron AWU-120, Compex WLU11 */
154 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
155 /* Intel AP310 AnyPoint II USB */
156 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
157 /* Dynalink L11U */
158 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
159 /* Arescom WL-210, FCC id 07J-GL2411USB */
160 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
161 /* I-O DATA WN-B11/USB */
162 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
163 /* BT Voyager 1010 */
164 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
165 /*
166 * at76c503-i3863
167 */
168 /* Generic AT76C503/3863 device */
169 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
170 /* Samsung SWL-2100U */
171 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
172 /*
173 * at76c503-rfmd
174 */
175 /* Generic AT76C503/RFMD device */
176 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
177 /* Dynalink/Askey WLL013 (rfmd) */
178 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
179 /* Linksys WUSB11 v2.6 */
180 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
181 /* Network Everywhere NWU11B */
182 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
183 /* Netgear MA101 rev. B */
184 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
185 /* D-Link DWL-120 rev. E */
186 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
187 /* Actiontec 802UAT1, HWU01150-01UK */
188 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
189 /* AirVast W-Buddie WN210 */
190 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
191 /* Dick Smith Electronics XH1153 802.11b USB adapter */
192 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
193 /* CNet CNUSB611 */
194 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
195 /* FiberLine FL-WL200U */
196 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
197 /* BenQ AWL400 USB stick */
198 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
199 /* 3Com 3CRSHEW696 */
200 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
201 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
202 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
203 /* Belkin F5D6050, version 2 */
204 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
205 /* iBlitzz, BWU613 (not *B or *SB) */
206 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
207 /* Gigabyte GN-WLBM101 */
208 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
209 /* Planex GW-US11S */
210 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
211 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
212 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
213 /* Corega Wireless LAN USB-11 mini */
214 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
215 /* Corega Wireless LAN USB-11 mini2 */
216 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
217 /* Uniden PCW100 */
218 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
219 /*
220 * at76c503-rfmd-acc
221 */
222 /* SMC2664W */
223 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
224 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
225 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
226 /*
227 * at76c505-rfmd
228 */
229 /* Generic AT76C505/RFMD */
230 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
231 /*
232 * at76c505-rfmd2958
233 */
234 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
235 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
236 /* Fiberline FL-WL240U */
237 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
238 /* CNet CNUSB-611G */
239 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
240 /* Linksys WUSB11 v2.8 */
241 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
242 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
243 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
244 /* Corega WLAN USB Stick 11 */
245 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
246 /* Microstar MSI Box MS6978 */
247 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
248 /*
249 * at76c505a-rfmd2958
250 */
251 /* Generic AT76C505A device */
252 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
253 /* Generic AT76C505AS device */
254 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
255 /* Siemens Gigaset USB WLAN Adapter 11 */
256 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
257 /*
258 * at76c505amx-rfmd
259 */
260 /* Generic AT76C505AMX device */
261 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
262 { }
263 };
264
265 MODULE_DEVICE_TABLE(usb, dev_table);
266
267 /* Supported rates of this hardware, bit 7 marks basic rates */
268 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
269
270 static const char *const preambles[] = { "long", "short", "auto" };
271
272 /* Firmware download */
273 /* DFU states */
274 #define STATE_IDLE 0x00
275 #define STATE_DETACH 0x01
276 #define STATE_DFU_IDLE 0x02
277 #define STATE_DFU_DOWNLOAD_SYNC 0x03
278 #define STATE_DFU_DOWNLOAD_BUSY 0x04
279 #define STATE_DFU_DOWNLOAD_IDLE 0x05
280 #define STATE_DFU_MANIFEST_SYNC 0x06
281 #define STATE_DFU_MANIFEST 0x07
282 #define STATE_DFU_MANIFEST_WAIT_RESET 0x08
283 #define STATE_DFU_UPLOAD_IDLE 0x09
284 #define STATE_DFU_ERROR 0x0a
285
286 /* DFU commands */
287 #define DFU_DETACH 0
288 #define DFU_DNLOAD 1
289 #define DFU_UPLOAD 2
290 #define DFU_GETSTATUS 3
291 #define DFU_CLRSTATUS 4
292 #define DFU_GETSTATE 5
293 #define DFU_ABORT 6
294
295 #define FW_BLOCK_SIZE 1024
296
297 struct dfu_status {
298 unsigned char status;
299 unsigned char poll_timeout[3];
300 unsigned char state;
301 unsigned char string;
302 } __attribute__((packed));
303
304 static inline int at76_is_intersil(enum board_type board)
305 {
306 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
307 }
308
309 static inline int at76_is_503rfmd(enum board_type board)
310 {
311 return (board == BOARD_503 || board == BOARD_503_ACC);
312 }
313
314 static inline int at76_is_505a(enum board_type board)
315 {
316 return (board == BOARD_505A || board == BOARD_505AMX);
317 }
318
319 /* Load a block of the first (internal) part of the firmware */
320 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
321 void *block, int size)
322 {
323 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
324 USB_TYPE_CLASS | USB_DIR_OUT |
325 USB_RECIP_INTERFACE, blockno, 0, block, size,
326 USB_CTRL_GET_TIMEOUT);
327 }
328
329 static int at76_dfu_get_status(struct usb_device *udev,
330 struct dfu_status *status)
331 {
332 int ret;
333
334 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
335 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
336 0, 0, status, sizeof(struct dfu_status),
337 USB_CTRL_GET_TIMEOUT);
338 return ret;
339 }
340
341 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
342 {
343 int ret;
344
345 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
346 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
347 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
348 return ret;
349 }
350
351 /* Convert timeout from the DFU status to jiffies */
352 static inline unsigned long at76_get_timeout(struct dfu_status *s)
353 {
354 return msecs_to_jiffies((s->poll_timeout[2] << 16)
355 | (s->poll_timeout[1] << 8)
356 | (s->poll_timeout[0]));
357 }
358
359 /* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
360 * its value in jiffies in the MANIFEST_SYNC state. */
361 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
362 int manifest_sync_timeout)
363 {
364 u8 *block;
365 struct dfu_status dfu_stat_buf;
366 int ret = 0;
367 int need_dfu_state = 1;
368 int is_done = 0;
369 u8 dfu_state = 0;
370 u32 dfu_timeout = 0;
371 int bsize = 0;
372 int blockno = 0;
373
374 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
375 manifest_sync_timeout);
376
377 if (!size) {
378 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
379 return -EINVAL;
380 }
381
382 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
383 if (!block)
384 return -ENOMEM;
385
386 do {
387 if (need_dfu_state) {
388 ret = at76_dfu_get_state(udev, &dfu_state);
389 if (ret < 0) {
390 dev_printk(KERN_ERR, &udev->dev,
391 "cannot get DFU state: %d\n", ret);
392 goto exit;
393 }
394 need_dfu_state = 0;
395 }
396
397 switch (dfu_state) {
398 case STATE_DFU_DOWNLOAD_SYNC:
399 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
400 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
401 if (ret >= 0) {
402 dfu_state = dfu_stat_buf.state;
403 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
404 need_dfu_state = 0;
405 } else
406 dev_printk(KERN_ERR, &udev->dev,
407 "at76_dfu_get_status returned %d\n",
408 ret);
409 break;
410
411 case STATE_DFU_DOWNLOAD_BUSY:
412 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
413 need_dfu_state = 1;
414
415 at76_dbg(DBG_DFU, "DFU: Resetting device");
416 schedule_timeout_interruptible(dfu_timeout);
417 break;
418
419 case STATE_DFU_DOWNLOAD_IDLE:
420 at76_dbg(DBG_DFU, "DOWNLOAD...");
421 /* fall through */
422 case STATE_DFU_IDLE:
423 at76_dbg(DBG_DFU, "DFU IDLE");
424
425 bsize = min_t(int, size, FW_BLOCK_SIZE);
426 memcpy(block, buf, bsize);
427 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
428 "bsize = %4d, blockno = %2d", size, bsize,
429 blockno);
430 ret =
431 at76_load_int_fw_block(udev, blockno, block, bsize);
432 buf += bsize;
433 size -= bsize;
434 blockno++;
435
436 if (ret != bsize)
437 dev_printk(KERN_ERR, &udev->dev,
438 "at76_load_int_fw_block "
439 "returned %d\n", ret);
440 need_dfu_state = 1;
441 break;
442
443 case STATE_DFU_MANIFEST_SYNC:
444 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
445
446 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
447 if (ret < 0)
448 break;
449
450 dfu_state = dfu_stat_buf.state;
451 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
452 need_dfu_state = 0;
453
454 /* override the timeout from the status response,
455 needed for AT76C505A */
456 if (manifest_sync_timeout > 0)
457 dfu_timeout = manifest_sync_timeout;
458
459 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
460 schedule_timeout_interruptible(dfu_timeout);
461 break;
462
463 case STATE_DFU_MANIFEST:
464 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
465 is_done = 1;
466 break;
467
468 case STATE_DFU_MANIFEST_WAIT_RESET:
469 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
470 is_done = 1;
471 break;
472
473 case STATE_DFU_UPLOAD_IDLE:
474 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
475 break;
476
477 case STATE_DFU_ERROR:
478 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
479 ret = -EPIPE;
480 break;
481
482 default:
483 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
484 ret = -EINVAL;
485 break;
486 }
487 } while (!is_done && (ret >= 0));
488
489 exit:
490 kfree(block);
491 if (ret >= 0)
492 ret = 0;
493
494 return ret;
495 }
496
497 #define HEX2STR_BUFFERS 4
498 #define HEX2STR_MAX_LEN 64
499 #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
500
501 /* Convert binary data into hex string */
502 static char *hex2str(void *buf, int len)
503 {
504 static atomic_t a = ATOMIC_INIT(0);
505 static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
506 char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
507 char *obuf = ret;
508 u8 *ibuf = buf;
509
510 if (len > HEX2STR_MAX_LEN)
511 len = HEX2STR_MAX_LEN;
512
513 if (len <= 0) {
514 ret[0] = '\0';
515 return ret;
516 }
517
518 while (len--) {
519 *obuf++ = BIN2HEX(*ibuf >> 4);
520 *obuf++ = BIN2HEX(*ibuf & 0xf);
521 *obuf++ = '-';
522 ibuf++;
523 }
524 *(--obuf) = '\0';
525
526 return ret;
527 }
528
529 #define MAC2STR_BUFFERS 4
530
531 static inline char *mac2str(u8 *mac)
532 {
533 static atomic_t a = ATOMIC_INIT(0);
534 static char bufs[MAC2STR_BUFFERS][6 * 3];
535 char *str;
536
537 str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)];
538 sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
539 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
540 return str;
541 }
542
543 /* LED trigger */
544 static int tx_activity;
545 static void at76_ledtrig_tx_timerfunc(unsigned long data);
546 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
547 DEFINE_LED_TRIGGER(ledtrig_tx);
548
549 static void at76_ledtrig_tx_timerfunc(unsigned long data)
550 {
551 static int tx_lastactivity;
552
553 if (tx_lastactivity != tx_activity) {
554 tx_lastactivity = tx_activity;
555 led_trigger_event(ledtrig_tx, LED_FULL);
556 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
557 } else
558 led_trigger_event(ledtrig_tx, LED_OFF);
559 }
560
561 static void at76_ledtrig_tx_activity(void)
562 {
563 tx_activity++;
564 if (!timer_pending(&ledtrig_tx_timer))
565 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
566 }
567
568 static int at76_remap(struct usb_device *udev)
569 {
570 int ret;
571 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
572 USB_TYPE_VENDOR | USB_DIR_OUT |
573 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
574 USB_CTRL_GET_TIMEOUT);
575 if (ret < 0)
576 return ret;
577 return 0;
578 }
579
580 static int at76_get_op_mode(struct usb_device *udev)
581 {
582 int ret;
583 u8 op_mode;
584
585 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
586 USB_TYPE_VENDOR | USB_DIR_IN |
587 USB_RECIP_INTERFACE, 0x01, 0, &op_mode, 1,
588 USB_CTRL_GET_TIMEOUT);
589 if (ret < 0)
590 return ret;
591 else if (ret < 1)
592 return -EIO;
593 else
594 return op_mode;
595 }
596
597 /* Load a block of the second ("external") part of the firmware */
598 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
599 void *block, int size)
600 {
601 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
602 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
603 0x0802, blockno, block, size,
604 USB_CTRL_GET_TIMEOUT);
605 }
606
607 static inline int at76_get_hw_cfg(struct usb_device *udev,
608 union at76_hwcfg *buf, int buf_size)
609 {
610 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
611 USB_TYPE_VENDOR | USB_DIR_IN |
612 USB_RECIP_INTERFACE, 0x0a02, 0,
613 buf, buf_size, USB_CTRL_GET_TIMEOUT);
614 }
615
616 /* Intersil boards use a different "value" for GetHWConfig requests */
617 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
618 union at76_hwcfg *buf, int buf_size)
619 {
620 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
621 USB_TYPE_VENDOR | USB_DIR_IN |
622 USB_RECIP_INTERFACE, 0x0902, 0,
623 buf, buf_size, USB_CTRL_GET_TIMEOUT);
624 }
625
626 /* Get the hardware configuration for the adapter and put it to the appropriate
627 * fields of 'priv' (the GetHWConfig request and interpretation of the result
628 * depends on the board type) */
629 static int at76_get_hw_config(struct at76_priv *priv)
630 {
631 int ret;
632 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
633
634 if (!hwcfg)
635 return -ENOMEM;
636
637 if (at76_is_intersil(priv->board_type)) {
638 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
639 sizeof(hwcfg->i));
640 if (ret < 0)
641 goto exit;
642 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
643 priv->regulatory_domain = hwcfg->i.regulatory_domain;
644 } else if (at76_is_503rfmd(priv->board_type)) {
645 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
646 if (ret < 0)
647 goto exit;
648 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
649 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
650 } else {
651 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
652 if (ret < 0)
653 goto exit;
654 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
655 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
656 }
657
658 exit:
659 kfree(hwcfg);
660 if (ret < 0)
661 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
662 wiphy_name(priv->hw->wiphy), ret);
663
664 return ret;
665 }
666
667 static struct reg_domain const *at76_get_reg_domain(u16 code)
668 {
669 int i;
670 static struct reg_domain const fd_tab[] = {
671 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */
672 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
673 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */
674 { 0x31, "Spain", 0x600 }, /* ch 10-11 */
675 { 0x32, "France", 0x1e00 }, /* ch 10-13 */
676 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */
677 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */
678 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */
679 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */
680 };
681
682 /* Last entry is fallback for unknown domain code */
683 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
684 if (code == fd_tab[i].code)
685 break;
686
687 return &fd_tab[i];
688 }
689
690 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
691 int buf_size)
692 {
693 int ret;
694
695 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
696 USB_TYPE_VENDOR | USB_DIR_IN |
697 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
698 USB_CTRL_GET_TIMEOUT);
699 if (ret >= 0 && ret != buf_size)
700 return -EIO;
701 return ret;
702 }
703
704 /* Return positive number for status, negative for an error */
705 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
706 {
707 u8 stat_buf[40];
708 int ret;
709
710 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
711 USB_TYPE_VENDOR | USB_DIR_IN |
712 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
713 sizeof(stat_buf), USB_CTRL_GET_TIMEOUT);
714 if (ret < 0)
715 return ret;
716
717 return stat_buf[5];
718 }
719
720 #define MAKE_CMD_CASE(c) case (c): return #c
721
722 static const char *at76_get_cmd_string(u8 cmd_status)
723 {
724 switch (cmd_status) {
725 MAKE_CMD_CASE(CMD_SET_MIB);
726 MAKE_CMD_CASE(CMD_GET_MIB);
727 MAKE_CMD_CASE(CMD_SCAN);
728 MAKE_CMD_CASE(CMD_JOIN);
729 MAKE_CMD_CASE(CMD_START_IBSS);
730 MAKE_CMD_CASE(CMD_RADIO_ON);
731 MAKE_CMD_CASE(CMD_RADIO_OFF);
732 MAKE_CMD_CASE(CMD_STARTUP);
733 }
734
735 return "UNKNOWN";
736 }
737
738 static int at76_set_card_command(struct usb_device *udev, int cmd, void *buf,
739 int buf_size)
740 {
741 int ret;
742 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
743 buf_size, GFP_KERNEL);
744
745 if (!cmd_buf)
746 return -ENOMEM;
747
748 cmd_buf->cmd = cmd;
749 cmd_buf->reserved = 0;
750 cmd_buf->size = cpu_to_le16(buf_size);
751 memcpy(cmd_buf->data, buf, buf_size);
752
753 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
754 "issuing command %s (0x%02x)",
755 at76_get_cmd_string(cmd), cmd);
756
757 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
758 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
759 0, 0, cmd_buf,
760 sizeof(struct at76_command) + buf_size,
761 USB_CTRL_GET_TIMEOUT);
762 kfree(cmd_buf);
763 return ret;
764 }
765
766 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
767 static const char *at76_get_cmd_status_string(u8 cmd_status)
768 {
769 switch (cmd_status) {
770 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
771 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
772 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
773 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
774 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
775 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
776 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
777 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
778 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
779 }
780
781 return "UNKNOWN";
782 }
783
784 /* Wait until the command is completed */
785 static int at76_wait_completion(struct at76_priv *priv, int cmd)
786 {
787 int status = 0;
788 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
789
790 do {
791 status = at76_get_cmd_status(priv->udev, cmd);
792 if (status < 0) {
793 printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
794 wiphy_name(priv->hw->wiphy), status);
795 break;
796 }
797
798 at76_dbg(DBG_WAIT_COMPLETE,
799 "%s: Waiting on cmd %d, status = %d (%s)",
800 wiphy_name(priv->hw->wiphy), cmd, status,
801 at76_get_cmd_status_string(status));
802
803 if (status != CMD_STATUS_IN_PROGRESS
804 && status != CMD_STATUS_IDLE)
805 break;
806
807 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
808 if (time_after(jiffies, timeout)) {
809 printk(KERN_ERR
810 "%s: completion timeout for command %d\n",
811 wiphy_name(priv->hw->wiphy), cmd);
812 status = -ETIMEDOUT;
813 break;
814 }
815 } while (1);
816
817 return status;
818 }
819
820 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
821 {
822 int ret;
823
824 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
825 offsetof(struct set_mib_buffer,
826 data) + buf->size);
827 if (ret < 0)
828 return ret;
829
830 ret = at76_wait_completion(priv, CMD_SET_MIB);
831 if (ret != CMD_STATUS_COMPLETE) {
832 printk(KERN_INFO
833 "%s: set_mib: at76_wait_completion failed "
834 "with %d\n", wiphy_name(priv->hw->wiphy), ret);
835 ret = -EIO;
836 }
837
838 return ret;
839 }
840
841 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
842 static int at76_set_radio(struct at76_priv *priv, int enable)
843 {
844 int ret;
845 int cmd;
846
847 if (priv->radio_on == enable)
848 return 0;
849
850 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
851
852 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
853 if (ret < 0)
854 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
855 wiphy_name(priv->hw->wiphy), cmd, ret);
856 else
857 ret = 1;
858
859 priv->radio_on = enable;
860 return ret;
861 }
862
863 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
864 static int at76_set_pm_mode(struct at76_priv *priv)
865 {
866 int ret = 0;
867
868 priv->mib_buf.type = MIB_MAC_MGMT;
869 priv->mib_buf.size = 1;
870 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
871 priv->mib_buf.data.byte = priv->pm_mode;
872
873 ret = at76_set_mib(priv, &priv->mib_buf);
874 if (ret < 0)
875 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
876 wiphy_name(priv->hw->wiphy), ret);
877
878 return ret;
879 }
880
881 static int at76_set_preamble(struct at76_priv *priv, u8 type)
882 {
883 int ret = 0;
884
885 priv->mib_buf.type = MIB_LOCAL;
886 priv->mib_buf.size = 1;
887 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
888 priv->mib_buf.data.byte = type;
889
890 ret = at76_set_mib(priv, &priv->mib_buf);
891 if (ret < 0)
892 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
893 wiphy_name(priv->hw->wiphy), ret);
894
895 return ret;
896 }
897
898 static int at76_set_frag(struct at76_priv *priv, u16 size)
899 {
900 int ret = 0;
901
902 priv->mib_buf.type = MIB_MAC;
903 priv->mib_buf.size = 2;
904 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
905 priv->mib_buf.data.word = cpu_to_le16(size);
906
907 ret = at76_set_mib(priv, &priv->mib_buf);
908 if (ret < 0)
909 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
910 wiphy_name(priv->hw->wiphy), ret);
911
912 return ret;
913 }
914
915 static int at76_set_rts(struct at76_priv *priv, u16 size)
916 {
917 int ret = 0;
918
919 priv->mib_buf.type = MIB_MAC;
920 priv->mib_buf.size = 2;
921 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
922 priv->mib_buf.data.word = cpu_to_le16(size);
923
924 ret = at76_set_mib(priv, &priv->mib_buf);
925 if (ret < 0)
926 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
927 wiphy_name(priv->hw->wiphy), ret);
928
929 return ret;
930 }
931
932 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
933 {
934 int ret = 0;
935
936 priv->mib_buf.type = MIB_LOCAL;
937 priv->mib_buf.size = 1;
938 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
939 priv->mib_buf.data.byte = onoff;
940
941 ret = at76_set_mib(priv, &priv->mib_buf);
942 if (ret < 0)
943 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
944 wiphy_name(priv->hw->wiphy), ret);
945
946 return ret;
947 }
948
949 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
950 {
951 int i;
952 int ret;
953 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
954 GFP_KERNEL);
955
956 if (!m)
957 return;
958
959 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
960 sizeof(struct mib_mac_addr));
961 if (ret < 0) {
962 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
963 wiphy_name(priv->hw->wiphy), ret);
964 goto exit;
965 }
966
967 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %s res 0x%x 0x%x",
968 wiphy_name(priv->hw->wiphy),
969 mac2str(m->mac_addr), m->res[0], m->res[1]);
970 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
971 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %s, "
972 "status %d", wiphy_name(priv->hw->wiphy), i,
973 mac2str(m->group_addr[i]), m->group_addr_status[i]);
974 exit:
975 kfree(m);
976 }
977
978 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
979 {
980 int i;
981 int ret;
982 int key_len;
983 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
984
985 if (!m)
986 return;
987
988 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
989 sizeof(struct mib_mac_wep));
990 if (ret < 0) {
991 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
992 wiphy_name(priv->hw->wiphy), ret);
993 goto exit;
994 }
995
996 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
997 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
998 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
999 m->privacy_invoked, m->wep_default_key_id,
1000 m->wep_key_mapping_len, m->exclude_unencrypted,
1001 le32_to_cpu(m->wep_icv_error_count),
1002 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1003 m->wep_default_key_id);
1004
1005 key_len = (m->encryption_level == 1) ?
1006 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1007
1008 for (i = 0; i < WEP_KEYS; i++)
1009 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1010 wiphy_name(priv->hw->wiphy), i,
1011 hex2str(m->wep_default_keyvalue[i], key_len));
1012 exit:
1013 kfree(m);
1014 }
1015
1016 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1017 {
1018 int ret;
1019 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1020 GFP_KERNEL);
1021
1022 if (!m)
1023 return;
1024
1025 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1026 sizeof(struct mib_mac_mgmt));
1027 if (ret < 0) {
1028 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1029 wiphy_name(priv->hw->wiphy), ret);
1030 goto exit;
1031 }
1032
1033 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1034 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1035 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1036 "current_bssid %s current_essid %s current_bss_type %d "
1037 "pm_mode %d ibss_change %d res %d "
1038 "multi_domain_capability_implemented %d "
1039 "international_roaming %d country_string %.3s",
1040 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1041 le16_to_cpu(m->CFP_max_duration),
1042 le16_to_cpu(m->medium_occupancy_limit),
1043 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1044 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1045 m->CFP_period, mac2str(m->current_bssid),
1046 hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1047 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1048 m->res, m->multi_domain_capability_implemented,
1049 m->multi_domain_capability_enabled, m->country_string);
1050 exit:
1051 kfree(m);
1052 }
1053
1054 static void at76_dump_mib_mac(struct at76_priv *priv)
1055 {
1056 int ret;
1057 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1058
1059 if (!m)
1060 return;
1061
1062 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1063 if (ret < 0) {
1064 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1065 wiphy_name(priv->hw->wiphy), ret);
1066 goto exit;
1067 }
1068
1069 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1070 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1071 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1072 "scan_type %d scan_channel %d probe_delay %u "
1073 "min_channel_time %d max_channel_time %d listen_int %d "
1074 "desired_ssid %s desired_bssid %s desired_bsstype %d",
1075 wiphy_name(priv->hw->wiphy),
1076 le32_to_cpu(m->max_tx_msdu_lifetime),
1077 le32_to_cpu(m->max_rx_lifetime),
1078 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1079 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1080 m->short_retry_time, m->long_retry_time, m->scan_type,
1081 m->scan_channel, le16_to_cpu(m->probe_delay),
1082 le16_to_cpu(m->min_channel_time),
1083 le16_to_cpu(m->max_channel_time),
1084 le16_to_cpu(m->listen_interval),
1085 hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1086 mac2str(m->desired_bssid), m->desired_bsstype);
1087 exit:
1088 kfree(m);
1089 }
1090
1091 static void at76_dump_mib_phy(struct at76_priv *priv)
1092 {
1093 int ret;
1094 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1095
1096 if (!m)
1097 return;
1098
1099 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1100 if (ret < 0) {
1101 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1102 wiphy_name(priv->hw->wiphy), ret);
1103 goto exit;
1104 }
1105
1106 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1107 "sifs_time %d preamble_length %d plcp_header_length %d "
1108 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1109 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1110 "phy_type %d current_reg_domain %d",
1111 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1112 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1113 le16_to_cpu(m->preamble_length),
1114 le16_to_cpu(m->plcp_header_length),
1115 le16_to_cpu(m->mpdu_max_length),
1116 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1117 m->operation_rate_set[1], m->operation_rate_set[2],
1118 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1119 m->phy_type, m->current_reg_domain);
1120 exit:
1121 kfree(m);
1122 }
1123
1124 static void at76_dump_mib_local(struct at76_priv *priv)
1125 {
1126 int ret;
1127 struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1128
1129 if (!m)
1130 return;
1131
1132 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1133 if (ret < 0) {
1134 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1135 wiphy_name(priv->hw->wiphy), ret);
1136 goto exit;
1137 }
1138
1139 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1140 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1141 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1142 m->beacon_enable,
1143 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1144 m->preamble_type);
1145 exit:
1146 kfree(m);
1147 }
1148
1149 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1150 {
1151 int ret;
1152 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1153
1154 if (!m)
1155 return;
1156
1157 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1158 sizeof(struct mib_mdomain));
1159 if (ret < 0) {
1160 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1161 wiphy_name(priv->hw->wiphy), ret);
1162 goto exit;
1163 }
1164
1165 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1166 wiphy_name(priv->hw->wiphy),
1167 hex2str(m->channel_list, sizeof(m->channel_list)));
1168
1169 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1170 wiphy_name(priv->hw->wiphy),
1171 hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1172 exit:
1173 kfree(m);
1174 }
1175
1176 /* Enable monitor mode */
1177 static int at76_start_monitor(struct at76_priv *priv)
1178 {
1179 struct at76_req_scan scan;
1180 int ret;
1181
1182 memset(&scan, 0, sizeof(struct at76_req_scan));
1183 memset(scan.bssid, 0xff, ETH_ALEN);
1184
1185 scan.channel = priv->channel;
1186 scan.scan_type = SCAN_TYPE_PASSIVE;
1187 scan.international_scan = 0;
1188
1189 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1190 if (ret >= 0)
1191 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1192
1193 return ret;
1194 }
1195
1196 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1197 likely to compensate a flaw in the AT76C503A USB part ... */
1198 static inline int at76_calc_padding(int wlen)
1199 {
1200 /* add the USB TX header */
1201 wlen += AT76_TX_HDRLEN;
1202
1203 wlen = wlen % 64;
1204
1205 if (wlen < 50)
1206 return 50 - wlen;
1207
1208 if (wlen >= 61)
1209 return 64 + 50 - wlen;
1210
1211 return 0;
1212 }
1213
1214 static void at76_rx_callback(struct urb *urb)
1215 {
1216 struct at76_priv *priv = urb->context;
1217
1218 priv->rx_tasklet.data = (unsigned long)urb;
1219 tasklet_schedule(&priv->rx_tasklet);
1220 return;
1221 }
1222
1223 static int at76_submit_rx_urb(struct at76_priv *priv)
1224 {
1225 int ret;
1226 int size;
1227 struct sk_buff *skb = priv->rx_skb;
1228
1229 if (!priv->rx_urb) {
1230 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
1231 wiphy_name(priv->hw->wiphy), __func__);
1232 return -EFAULT;
1233 }
1234
1235 if (!skb) {
1236 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1237 if (!skb) {
1238 printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
1239 wiphy_name(priv->hw->wiphy));
1240 ret = -ENOMEM;
1241 goto exit;
1242 }
1243 priv->rx_skb = skb;
1244 } else {
1245 skb_push(skb, skb_headroom(skb));
1246 skb_trim(skb, 0);
1247 }
1248
1249 size = skb_tailroom(skb);
1250 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1251 skb_put(skb, size), size, at76_rx_callback, priv);
1252 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1253 if (ret < 0) {
1254 if (ret == -ENODEV)
1255 at76_dbg(DBG_DEVSTART,
1256 "usb_submit_urb returned -ENODEV");
1257 else
1258 printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
1259 wiphy_name(priv->hw->wiphy), ret);
1260 }
1261
1262 exit:
1263 if (ret < 0 && ret != -ENODEV)
1264 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
1265 "driver and/or power cycle the device\n",
1266 wiphy_name(priv->hw->wiphy));
1267
1268 return ret;
1269 }
1270
1271 /* Download external firmware */
1272 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1273 {
1274 int ret;
1275 int op_mode;
1276 int blockno = 0;
1277 int bsize;
1278 u8 *block;
1279 u8 *buf = fwe->extfw;
1280 int size = fwe->extfw_size;
1281
1282 if (!buf || !size)
1283 return -ENOENT;
1284
1285 op_mode = at76_get_op_mode(udev);
1286 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1287
1288 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1289 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1290 op_mode);
1291 return -EINVAL;
1292 }
1293
1294 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1295 if (!block)
1296 return -ENOMEM;
1297
1298 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1299
1300 /* for fw >= 0.100, the device needs an extra empty block */
1301 do {
1302 bsize = min_t(int, size, FW_BLOCK_SIZE);
1303 memcpy(block, buf, bsize);
1304 at76_dbg(DBG_DEVSTART,
1305 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1306 size, bsize, blockno);
1307 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1308 if (ret != bsize) {
1309 dev_printk(KERN_ERR, &udev->dev,
1310 "loading %dth firmware block failed: %d\n",
1311 blockno, ret);
1312 goto exit;
1313 }
1314 buf += bsize;
1315 size -= bsize;
1316 blockno++;
1317 } while (bsize > 0);
1318
1319 if (at76_is_505a(fwe->board_type)) {
1320 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1321 schedule_timeout_interruptible(HZ / 5 + 1);
1322 }
1323
1324 exit:
1325 kfree(block);
1326 if (ret < 0)
1327 dev_printk(KERN_ERR, &udev->dev,
1328 "downloading external firmware failed: %d\n", ret);
1329 return ret;
1330 }
1331
1332 /* Download internal firmware */
1333 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1334 {
1335 int ret;
1336 int need_remap = !at76_is_505a(fwe->board_type);
1337
1338 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1339 need_remap ? 0 : 2 * HZ);
1340
1341 if (ret < 0) {
1342 dev_printk(KERN_ERR, &udev->dev,
1343 "downloading internal fw failed with %d\n", ret);
1344 goto exit;
1345 }
1346
1347 at76_dbg(DBG_DEVSTART, "sending REMAP");
1348
1349 /* no REMAP for 505A (see SF driver) */
1350 if (need_remap) {
1351 ret = at76_remap(udev);
1352 if (ret < 0) {
1353 dev_printk(KERN_ERR, &udev->dev,
1354 "sending REMAP failed with %d\n", ret);
1355 goto exit;
1356 }
1357 }
1358
1359 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1360 schedule_timeout_interruptible(2 * HZ + 1);
1361 usb_reset_device(udev);
1362
1363 exit:
1364 return ret;
1365 }
1366
1367 static int at76_startup_device(struct at76_priv *priv)
1368 {
1369 struct at76_card_config *ccfg = &priv->card_config;
1370 int ret;
1371
1372 at76_dbg(DBG_PARAMS,
1373 "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1374 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1375 priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1376 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1377 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1378 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1379 at76_dbg(DBG_PARAMS,
1380 "%s param: preamble %s rts %d retry %d frag %d "
1381 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1382 preambles[priv->preamble_type], priv->rts_threshold,
1383 priv->short_retry_limit, priv->frag_threshold,
1384 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1385 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1386 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1387 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1388 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1389 at76_dbg(DBG_PARAMS,
1390 "%s param: pm_mode %d pm_period %d auth_mode %s "
1391 "scan_times %d %d scan_mode %s",
1392 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1393 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1394 priv->scan_min_time, priv->scan_max_time,
1395 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1396
1397 memset(ccfg, 0, sizeof(struct at76_card_config));
1398 ccfg->promiscuous_mode = 0;
1399 ccfg->short_retry_limit = priv->short_retry_limit;
1400
1401 if (priv->wep_enabled) {
1402 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1403 ccfg->encryption_type = 2;
1404 else
1405 ccfg->encryption_type = 1;
1406
1407 /* jal: always exclude unencrypted if WEP is active */
1408 ccfg->exclude_unencrypted = 1;
1409 } else {
1410 ccfg->exclude_unencrypted = 0;
1411 ccfg->encryption_type = 0;
1412 }
1413
1414 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1415 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1416
1417 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1418 /* jal: really needed, we do a set_mib for autorate later ??? */
1419 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1420 ccfg->channel = priv->channel;
1421 ccfg->privacy_invoked = priv->wep_enabled;
1422 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1423 ccfg->ssid_len = priv->essid_size;
1424
1425 ccfg->wep_default_key_id = priv->wep_key_id;
1426 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1427 sizeof(priv->wep_keys));
1428
1429 ccfg->short_preamble = priv->preamble_type;
1430 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1431
1432 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1433 sizeof(struct at76_card_config));
1434 if (ret < 0) {
1435 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1436 wiphy_name(priv->hw->wiphy), ret);
1437 return ret;
1438 }
1439
1440 at76_wait_completion(priv, CMD_STARTUP);
1441
1442 /* remove BSSID from previous run */
1443 memset(priv->bssid, 0, ETH_ALEN);
1444
1445 if (at76_set_radio(priv, 1) == 1)
1446 at76_wait_completion(priv, CMD_RADIO_ON);
1447
1448 ret = at76_set_preamble(priv, priv->preamble_type);
1449 if (ret < 0)
1450 return ret;
1451
1452 ret = at76_set_frag(priv, priv->frag_threshold);
1453 if (ret < 0)
1454 return ret;
1455
1456 ret = at76_set_rts(priv, priv->rts_threshold);
1457 if (ret < 0)
1458 return ret;
1459
1460 ret = at76_set_autorate_fallback(priv,
1461 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1462 if (ret < 0)
1463 return ret;
1464
1465 ret = at76_set_pm_mode(priv);
1466 if (ret < 0)
1467 return ret;
1468
1469 if (at76_debug & DBG_MIB) {
1470 at76_dump_mib_mac(priv);
1471 at76_dump_mib_mac_addr(priv);
1472 at76_dump_mib_mac_mgmt(priv);
1473 at76_dump_mib_mac_wep(priv);
1474 at76_dump_mib_mdomain(priv);
1475 at76_dump_mib_phy(priv);
1476 at76_dump_mib_local(priv);
1477 }
1478
1479 return 0;
1480 }
1481
1482 /* Enable or disable promiscuous mode */
1483 static void at76_work_set_promisc(struct work_struct *work)
1484 {
1485 struct at76_priv *priv = container_of(work, struct at76_priv,
1486 work_set_promisc);
1487 int ret = 0;
1488
1489 mutex_lock(&priv->mtx);
1490
1491 priv->mib_buf.type = MIB_LOCAL;
1492 priv->mib_buf.size = 1;
1493 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1494 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1495
1496 ret = at76_set_mib(priv, &priv->mib_buf);
1497 if (ret < 0)
1498 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
1499 wiphy_name(priv->hw->wiphy), ret);
1500
1501 mutex_unlock(&priv->mtx);
1502 }
1503
1504 /* Submit Rx urb back to the device */
1505 static void at76_work_submit_rx(struct work_struct *work)
1506 {
1507 struct at76_priv *priv = container_of(work, struct at76_priv,
1508 work_submit_rx);
1509
1510 mutex_lock(&priv->mtx);
1511 at76_submit_rx_urb(priv);
1512 mutex_unlock(&priv->mtx);
1513 }
1514
1515 static void at76_rx_tasklet(unsigned long param)
1516 {
1517 struct urb *urb = (struct urb *)param;
1518 struct at76_priv *priv = urb->context;
1519 struct at76_rx_buffer *buf;
1520 struct ieee80211_rx_status rx_status = { 0 };
1521
1522 if (priv->device_unplugged) {
1523 at76_dbg(DBG_DEVSTART, "device unplugged");
1524 if (urb)
1525 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1526 return;
1527 }
1528
1529 if (!priv->rx_skb || !priv->rx_skb->data)
1530 return;
1531
1532 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1533
1534 if (urb->status != 0) {
1535 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1536 at76_dbg(DBG_URB,
1537 "%s %s: - nonzero Rx bulk status received: %d",
1538 __func__, wiphy_name(priv->hw->wiphy),
1539 urb->status);
1540 return;
1541 }
1542
1543 at76_dbg(DBG_RX_ATMEL_HDR,
1544 "%s: rx frame: rate %d rssi %d noise %d link %d",
1545 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1546 buf->noise_level, buf->link_quality);
1547
1548 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1549 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1550 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1551 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1552
1553 rx_status.signal = buf->rssi;
1554 rx_status.flag |= RX_FLAG_DECRYPTED;
1555 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1556
1557 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1558 priv->rx_skb->len, priv->rx_skb->data_len);
1559 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb, &rx_status);
1560
1561 /* Use a new skb for the next receive */
1562 priv->rx_skb = NULL;
1563
1564 at76_submit_rx_urb(priv);
1565 }
1566
1567 /* Load firmware into kernel memory and parse it */
1568 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1569 enum board_type board_type)
1570 {
1571 int ret;
1572 char *str;
1573 struct at76_fw_header *fwh;
1574 struct fwentry *fwe = &firmwares[board_type];
1575
1576 mutex_lock(&fw_mutex);
1577
1578 if (fwe->loaded) {
1579 at76_dbg(DBG_FW, "re-using previously loaded fw");
1580 goto exit;
1581 }
1582
1583 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1584 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1585 if (ret < 0) {
1586 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1587 fwe->fwname);
1588 dev_printk(KERN_ERR, &udev->dev,
1589 "you may need to download the firmware from "
1590 "http://developer.berlios.de/projects/at76c503a/\n");
1591 goto exit;
1592 }
1593
1594 at76_dbg(DBG_FW, "got it.");
1595 fwh = (struct at76_fw_header *)(fwe->fw->data);
1596
1597 if (fwe->fw->size <= sizeof(*fwh)) {
1598 dev_printk(KERN_ERR, &udev->dev,
1599 "firmware is too short (0x%zx)\n", fwe->fw->size);
1600 goto exit;
1601 }
1602
1603 /* CRC currently not checked */
1604 fwe->board_type = le32_to_cpu(fwh->board_type);
1605 if (fwe->board_type != board_type) {
1606 dev_printk(KERN_ERR, &udev->dev,
1607 "board type mismatch, requested %u, got %u\n",
1608 board_type, fwe->board_type);
1609 goto exit;
1610 }
1611
1612 fwe->fw_version.major = fwh->major;
1613 fwe->fw_version.minor = fwh->minor;
1614 fwe->fw_version.patch = fwh->patch;
1615 fwe->fw_version.build = fwh->build;
1616
1617 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1618 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1619 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1620 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1621 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1622
1623 fwe->loaded = 1;
1624
1625 dev_printk(KERN_DEBUG, &udev->dev,
1626 "using firmware %s (version %d.%d.%d-%d)\n",
1627 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1628
1629 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1630 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1631 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1632 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1633
1634 exit:
1635 mutex_unlock(&fw_mutex);
1636
1637 if (fwe->loaded)
1638 return fwe;
1639 else
1640 return NULL;
1641 }
1642
1643 static void at76_mac80211_tx_callback(struct urb *urb)
1644 {
1645 struct at76_priv *priv = urb->context;
1646 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1647
1648 at76_dbg(DBG_MAC80211, "%s()", __func__);
1649
1650 switch (urb->status) {
1651 case 0:
1652 /* success */
1653 info->flags |= IEEE80211_TX_STAT_ACK;
1654 break;
1655 case -ENOENT:
1656 case -ECONNRESET:
1657 /* fail, urb has been unlinked */
1658 /* FIXME: add error message */
1659 break;
1660 default:
1661 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1662 __func__, urb->status);
1663 break;
1664 }
1665
1666 memset(&info->status, 0, sizeof(info->status));
1667
1668 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1669
1670 priv->tx_skb = NULL;
1671
1672 ieee80211_wake_queues(priv->hw);
1673 }
1674
1675 static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1676 {
1677 struct at76_priv *priv = hw->priv;
1678 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1679 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1680 int padding, submit_len, ret;
1681
1682 at76_dbg(DBG_MAC80211, "%s()", __func__);
1683
1684 if (priv->tx_urb->status == -EINPROGRESS) {
1685 printk(KERN_ERR "%s: %s called while tx urb is pending\n",
1686 wiphy_name(priv->hw->wiphy), __func__);
1687 return NETDEV_TX_BUSY;
1688 }
1689
1690 ieee80211_stop_queues(hw);
1691
1692 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
1693
1694 WARN_ON(priv->tx_skb != NULL);
1695
1696 priv->tx_skb = skb;
1697 padding = at76_calc_padding(skb->len);
1698 submit_len = AT76_TX_HDRLEN + skb->len + padding;
1699
1700 /* setup 'Atmel' header */
1701 memset(tx_buffer, 0, sizeof(*tx_buffer));
1702 tx_buffer->padding = padding;
1703 tx_buffer->wlength = cpu_to_le16(skb->len);
1704 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1705 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1706 memcpy(tx_buffer->packet, skb->data, skb->len);
1707
1708 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1709 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1710 tx_buffer->padding, tx_buffer->tx_rate);
1711
1712 /* send stuff */
1713 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1714 "%s(): tx_buffer %d bytes:", __func__, submit_len);
1715 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1716 submit_len, at76_mac80211_tx_callback, priv);
1717 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1718 if (ret) {
1719 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1720 wiphy_name(priv->hw->wiphy), ret);
1721 if (ret == -EINVAL)
1722 printk(KERN_ERR
1723 "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
1724 wiphy_name(priv->hw->wiphy), priv->tx_urb,
1725 priv->tx_urb->hcpriv, priv->tx_urb->complete);
1726 }
1727
1728 return 0;
1729 }
1730
1731 static int at76_mac80211_start(struct ieee80211_hw *hw)
1732 {
1733 struct at76_priv *priv = hw->priv;
1734 int ret;
1735
1736 at76_dbg(DBG_MAC80211, "%s()", __func__);
1737
1738 mutex_lock(&priv->mtx);
1739
1740 ret = at76_submit_rx_urb(priv);
1741 if (ret < 0) {
1742 printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
1743 wiphy_name(priv->hw->wiphy), ret);
1744 goto error;
1745 }
1746
1747 at76_startup_device(priv);
1748
1749 at76_start_monitor(priv);
1750
1751 error:
1752 mutex_unlock(&priv->mtx);
1753
1754 return 0;
1755 }
1756
1757 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1758 {
1759 struct at76_priv *priv = hw->priv;
1760
1761 at76_dbg(DBG_MAC80211, "%s()", __func__);
1762
1763 mutex_lock(&priv->mtx);
1764
1765 if (!priv->device_unplugged) {
1766 /* We are called by "ifconfig ethX down", not because the
1767 * device is not available anymore. */
1768 at76_set_radio(priv, 0);
1769
1770 /* We unlink rx_urb because at76_open() re-submits it.
1771 * If unplugged, at76_delete_device() takes care of it. */
1772 usb_kill_urb(priv->rx_urb);
1773 }
1774
1775 mutex_unlock(&priv->mtx);
1776 }
1777
1778 static int at76_add_interface(struct ieee80211_hw *hw,
1779 struct ieee80211_if_init_conf *conf)
1780 {
1781 struct at76_priv *priv = hw->priv;
1782 int ret = 0;
1783
1784 at76_dbg(DBG_MAC80211, "%s()", __func__);
1785
1786 mutex_lock(&priv->mtx);
1787
1788 switch (conf->type) {
1789 case NL80211_IFTYPE_STATION:
1790 priv->iw_mode = IW_MODE_INFRA;
1791 break;
1792 default:
1793 ret = -EOPNOTSUPP;
1794 goto exit;
1795 }
1796
1797 exit:
1798 mutex_unlock(&priv->mtx);
1799
1800 return ret;
1801 }
1802
1803 static void at76_remove_interface(struct ieee80211_hw *hw,
1804 struct ieee80211_if_init_conf *conf)
1805 {
1806 at76_dbg(DBG_MAC80211, "%s()", __func__);
1807 }
1808
1809 static int at76_join(struct at76_priv *priv)
1810 {
1811 struct at76_req_join join;
1812 int ret;
1813
1814 memset(&join, 0, sizeof(struct at76_req_join));
1815 memcpy(join.essid, priv->essid, priv->essid_size);
1816 join.essid_size = priv->essid_size;
1817 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1818 join.bss_type = INFRASTRUCTURE_MODE;
1819 join.channel = priv->channel;
1820 join.timeout = cpu_to_le16(2000);
1821
1822 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1823 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1824 sizeof(struct at76_req_join));
1825
1826 if (ret < 0) {
1827 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1828 wiphy_name(priv->hw->wiphy), ret);
1829 return 0;
1830 }
1831
1832 ret = at76_wait_completion(priv, CMD_JOIN);
1833 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1834 if (ret != CMD_STATUS_COMPLETE) {
1835 printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
1836 wiphy_name(priv->hw->wiphy), ret);
1837 return 0;
1838 }
1839
1840 at76_set_pm_mode(priv);
1841
1842 return 0;
1843 }
1844
1845 static void at76_dwork_hw_scan(struct work_struct *work)
1846 {
1847 struct at76_priv *priv = container_of(work, struct at76_priv,
1848 dwork_hw_scan.work);
1849 int ret;
1850
1851 mutex_lock(&priv->mtx);
1852
1853 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1854 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1855
1856 /* FIXME: add maximum time for scan to complete */
1857
1858 if (ret != CMD_STATUS_COMPLETE) {
1859 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
1860 SCAN_POLL_INTERVAL);
1861 goto exit;
1862 }
1863
1864 ieee80211_scan_completed(priv->hw, false);
1865
1866 if (is_valid_ether_addr(priv->bssid))
1867 at76_join(priv);
1868
1869 ieee80211_wake_queues(priv->hw);
1870
1871 exit:
1872 mutex_unlock(&priv->mtx);
1873 }
1874
1875 static int at76_hw_scan(struct ieee80211_hw *hw,
1876 struct cfg80211_scan_request *req)
1877 {
1878 struct at76_priv *priv = hw->priv;
1879 struct at76_req_scan scan;
1880 u8 *ssid = NULL;
1881 int ret, len = 0;
1882
1883 at76_dbg(DBG_MAC80211, "%s():", __func__);
1884
1885 mutex_lock(&priv->mtx);
1886
1887 ieee80211_stop_queues(hw);
1888
1889 memset(&scan, 0, sizeof(struct at76_req_scan));
1890 memset(scan.bssid, 0xFF, ETH_ALEN);
1891
1892 if (req->n_ssids) {
1893 scan.scan_type = SCAN_TYPE_ACTIVE;
1894 ssid = req->ssids[0].ssid;
1895 len = req->ssids[0].ssid_len;
1896 } else {
1897 scan.scan_type = SCAN_TYPE_PASSIVE;
1898 }
1899
1900 if (len) {
1901 memcpy(scan.essid, ssid, len);
1902 scan.essid_size = len;
1903 }
1904
1905 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1906 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1907 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1908 scan.international_scan = 0;
1909
1910 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1911 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1912
1913 if (ret < 0) {
1914 err("CMD_SCAN failed: %d", ret);
1915 goto exit;
1916 }
1917
1918 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
1919 SCAN_POLL_INTERVAL);
1920
1921 exit:
1922 mutex_unlock(&priv->mtx);
1923
1924 return 0;
1925 }
1926
1927 static int at76_config(struct ieee80211_hw *hw, u32 changed)
1928 {
1929 struct at76_priv *priv = hw->priv;
1930
1931 at76_dbg(DBG_MAC80211, "%s(): channel %d radio %d",
1932 __func__, hw->conf.channel->hw_value,
1933 hw->conf.radio_enabled);
1934 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1935
1936 mutex_lock(&priv->mtx);
1937
1938 priv->channel = hw->conf.channel->hw_value;
1939
1940 if (is_valid_ether_addr(priv->bssid))
1941 at76_join(priv);
1942 else
1943 at76_start_monitor(priv);
1944
1945 mutex_unlock(&priv->mtx);
1946
1947 return 0;
1948 }
1949
1950 static int at76_config_interface(struct ieee80211_hw *hw,
1951 struct ieee80211_vif *vif,
1952 struct ieee80211_if_conf *conf)
1953 {
1954 struct at76_priv *priv = hw->priv;
1955
1956 at76_dbg(DBG_MAC80211, "%s():", __func__);
1957 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
1958
1959 mutex_lock(&priv->mtx);
1960
1961 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1962
1963 if (is_valid_ether_addr(priv->bssid))
1964 /* mac80211 is joining a bss */
1965 at76_join(priv);
1966
1967 mutex_unlock(&priv->mtx);
1968
1969 return 0;
1970 }
1971
1972 /* must be atomic */
1973 static void at76_configure_filter(struct ieee80211_hw *hw,
1974 unsigned int changed_flags,
1975 unsigned int *total_flags, int mc_count,
1976 struct dev_addr_list *mc_list)
1977 {
1978 struct at76_priv *priv = hw->priv;
1979 int flags;
1980
1981 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
1982 "total_flags=0x%08x mc_count=%d",
1983 __func__, changed_flags, *total_flags, mc_count);
1984
1985 flags = changed_flags & AT76_SUPPORTED_FILTERS;
1986 *total_flags = AT76_SUPPORTED_FILTERS;
1987
1988 /* FIXME: access to priv->promisc should be protected with
1989 * priv->mtx, but it's impossible because this function needs to be
1990 * atomic */
1991
1992 if (flags && !priv->promisc) {
1993 /* mac80211 wants us to enable promiscuous mode */
1994 priv->promisc = 1;
1995 } else if (!flags && priv->promisc) {
1996 /* we need to disable promiscuous mode */
1997 priv->promisc = 0;
1998 } else
1999 return;
2000
2001 queue_work(hw->workqueue, &priv->work_set_promisc);
2002 }
2003
2004 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2005 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2006 struct ieee80211_key_conf *key)
2007 {
2008 struct at76_priv *priv = hw->priv;
2009
2010 int i;
2011
2012 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2013 "key->keylen %d",
2014 __func__, cmd, key->alg, key->keyidx, key->keylen);
2015
2016 if (key->alg != ALG_WEP)
2017 return -EOPNOTSUPP;
2018
2019 key->hw_key_idx = key->keyidx;
2020
2021 mutex_lock(&priv->mtx);
2022
2023 switch (cmd) {
2024 case SET_KEY:
2025 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2026 priv->wep_keys_len[key->keyidx] = key->keylen;
2027
2028 /* FIXME: find out how to do this properly */
2029 priv->wep_key_id = key->keyidx;
2030
2031 break;
2032 case DISABLE_KEY:
2033 default:
2034 priv->wep_keys_len[key->keyidx] = 0;
2035 break;
2036 }
2037
2038 priv->wep_enabled = 0;
2039
2040 for (i = 0; i < WEP_KEYS; i++) {
2041 if (priv->wep_keys_len[i] != 0)
2042 priv->wep_enabled = 1;
2043 }
2044
2045 at76_startup_device(priv);
2046
2047 mutex_unlock(&priv->mtx);
2048
2049 return 0;
2050 }
2051
2052 static const struct ieee80211_ops at76_ops = {
2053 .tx = at76_mac80211_tx,
2054 .add_interface = at76_add_interface,
2055 .remove_interface = at76_remove_interface,
2056 .config = at76_config,
2057 .config_interface = at76_config_interface,
2058 .configure_filter = at76_configure_filter,
2059 .start = at76_mac80211_start,
2060 .stop = at76_mac80211_stop,
2061 .hw_scan = at76_hw_scan,
2062 .set_key = at76_set_key,
2063 };
2064
2065 /* Allocate network device and initialize private data */
2066 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2067 {
2068 struct ieee80211_hw *hw;
2069 struct at76_priv *priv;
2070
2071 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2072 if (!hw) {
2073 printk(KERN_ERR DRIVER_NAME ": could not register"
2074 " ieee80211_hw\n");
2075 return NULL;
2076 }
2077
2078 priv = hw->priv;
2079 priv->hw = hw;
2080
2081 priv->udev = udev;
2082
2083 mutex_init(&priv->mtx);
2084 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2085 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2086 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2087
2088 priv->rx_tasklet.func = at76_rx_tasklet;
2089 priv->rx_tasklet.data = 0;
2090
2091 priv->pm_mode = AT76_PM_OFF;
2092 priv->pm_period = 0;
2093
2094 /* unit us */
2095 priv->hw->channel_change_time = 100000;
2096
2097 return priv;
2098 }
2099
2100 static int at76_alloc_urbs(struct at76_priv *priv,
2101 struct usb_interface *interface)
2102 {
2103 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2104 int i;
2105 int buffer_size;
2106 struct usb_host_interface *iface_desc;
2107
2108 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2109
2110 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2111 interface->altsetting[0].desc.bNumEndpoints);
2112
2113 ep_in = NULL;
2114 ep_out = NULL;
2115 iface_desc = interface->cur_altsetting;
2116 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2117 endpoint = &iface_desc->endpoint[i].desc;
2118
2119 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2120 __func__, i, endpoint->bEndpointAddress,
2121 endpoint->bmAttributes);
2122
2123 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2124 ep_in = endpoint;
2125
2126 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2127 ep_out = endpoint;
2128 }
2129
2130 if (!ep_in || !ep_out) {
2131 dev_printk(KERN_ERR, &interface->dev,
2132 "bulk endpoints missing\n");
2133 return -ENXIO;
2134 }
2135
2136 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2137 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2138
2139 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2140 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2141 if (!priv->rx_urb || !priv->tx_urb) {
2142 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2143 return -ENOMEM;
2144 }
2145
2146 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2147 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2148 if (!priv->bulk_out_buffer) {
2149 dev_printk(KERN_ERR, &interface->dev,
2150 "cannot allocate output buffer\n");
2151 return -ENOMEM;
2152 }
2153
2154 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2155
2156 return 0;
2157 }
2158
2159 static struct ieee80211_rate at76_rates[] = {
2160 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2161 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2162 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2163 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2164 };
2165
2166 static struct ieee80211_channel at76_channels[] = {
2167 { .center_freq = 2412, .hw_value = 1 },
2168 { .center_freq = 2417, .hw_value = 2 },
2169 { .center_freq = 2422, .hw_value = 3 },
2170 { .center_freq = 2427, .hw_value = 4 },
2171 { .center_freq = 2432, .hw_value = 5 },
2172 { .center_freq = 2437, .hw_value = 6 },
2173 { .center_freq = 2442, .hw_value = 7 },
2174 { .center_freq = 2447, .hw_value = 8 },
2175 { .center_freq = 2452, .hw_value = 9 },
2176 { .center_freq = 2457, .hw_value = 10 },
2177 { .center_freq = 2462, .hw_value = 11 },
2178 { .center_freq = 2467, .hw_value = 12 },
2179 { .center_freq = 2472, .hw_value = 13 },
2180 { .center_freq = 2484, .hw_value = 14 }
2181 };
2182
2183 static struct ieee80211_supported_band at76_supported_band = {
2184 .channels = at76_channels,
2185 .n_channels = ARRAY_SIZE(at76_channels),
2186 .bitrates = at76_rates,
2187 .n_bitrates = ARRAY_SIZE(at76_rates),
2188 };
2189
2190 /* Register network device and initialize the hardware */
2191 static int at76_init_new_device(struct at76_priv *priv,
2192 struct usb_interface *interface)
2193 {
2194 int ret;
2195
2196 /* set up the endpoint information */
2197 /* check out the endpoints */
2198
2199 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2200 interface->cur_altsetting->desc.bNumEndpoints);
2201
2202 ret = at76_alloc_urbs(priv, interface);
2203 if (ret < 0)
2204 goto exit;
2205
2206 /* MAC address */
2207 ret = at76_get_hw_config(priv);
2208 if (ret < 0) {
2209 dev_printk(KERN_ERR, &interface->dev,
2210 "cannot get MAC address\n");
2211 goto exit;
2212 }
2213
2214 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2215
2216 priv->channel = DEF_CHANNEL;
2217 priv->iw_mode = IW_MODE_INFRA;
2218 priv->rts_threshold = DEF_RTS_THRESHOLD;
2219 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2220 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2221 priv->txrate = TX_RATE_AUTO;
2222 priv->preamble_type = PREAMBLE_TYPE_LONG;
2223 priv->beacon_period = 100;
2224 priv->auth_mode = WLAN_AUTH_OPEN;
2225 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2226 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2227 priv->scan_mode = SCAN_TYPE_ACTIVE;
2228
2229 /* mac80211 initialisation */
2230 priv->hw->wiphy->max_scan_ssids = 1;
2231 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2232 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2233 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2234 IEEE80211_HW_SIGNAL_UNSPEC;
2235 priv->hw->max_signal = 100;
2236
2237 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2238 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2239
2240 ret = ieee80211_register_hw(priv->hw);
2241 if (ret) {
2242 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2243 ret);
2244 goto exit;
2245 }
2246
2247 priv->mac80211_registered = 1;
2248
2249 printk(KERN_INFO "%s: USB %s, MAC %s, firmware %d.%d.%d-%d\n",
2250 wiphy_name(priv->hw->wiphy),
2251 interface->dev.bus_id, mac2str(priv->mac_addr),
2252 priv->fw_version.major, priv->fw_version.minor,
2253 priv->fw_version.patch, priv->fw_version.build);
2254 printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n",
2255 wiphy_name(priv->hw->wiphy),
2256 priv->regulatory_domain, priv->domain->name);
2257
2258 exit:
2259 return ret;
2260 }
2261
2262 static void at76_delete_device(struct at76_priv *priv)
2263 {
2264 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2265
2266 /* The device is gone, don't bother turning it off */
2267 priv->device_unplugged = 1;
2268
2269 if (priv->mac80211_registered)
2270 ieee80211_unregister_hw(priv->hw);
2271
2272 /* assuming we used keventd, it must quiesce too */
2273 flush_scheduled_work();
2274
2275 kfree(priv->bulk_out_buffer);
2276
2277 if (priv->tx_urb) {
2278 usb_kill_urb(priv->tx_urb);
2279 usb_free_urb(priv->tx_urb);
2280 }
2281 if (priv->rx_urb) {
2282 usb_kill_urb(priv->rx_urb);
2283 usb_free_urb(priv->rx_urb);
2284 }
2285
2286 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2287
2288 if (priv->rx_skb)
2289 kfree_skb(priv->rx_skb);
2290
2291 usb_put_dev(priv->udev);
2292
2293 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2294 __func__);
2295 ieee80211_free_hw(priv->hw);
2296
2297 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2298 }
2299
2300 static int at76_probe(struct usb_interface *interface,
2301 const struct usb_device_id *id)
2302 {
2303 int ret;
2304 struct at76_priv *priv;
2305 struct fwentry *fwe;
2306 struct usb_device *udev;
2307 int op_mode;
2308 int need_ext_fw = 0;
2309 struct mib_fw_version fwv;
2310 int board_type = (int)id->driver_info;
2311
2312 udev = usb_get_dev(interface_to_usbdev(interface));
2313
2314 /* Load firmware into kernel memory */
2315 fwe = at76_load_firmware(udev, board_type);
2316 if (!fwe) {
2317 ret = -ENOENT;
2318 goto error;
2319 }
2320
2321 op_mode = at76_get_op_mode(udev);
2322
2323 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2324
2325 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2326 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2327
2328 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2329 dev_printk(KERN_ERR, &interface->dev,
2330 "cannot handle a device in HW_CONFIG_MODE\n");
2331 ret = -EBUSY;
2332 goto error;
2333 }
2334
2335 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2336 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2337 /* download internal firmware part */
2338 dev_printk(KERN_DEBUG, &interface->dev,
2339 "downloading internal firmware\n");
2340 ret = at76_load_internal_fw(udev, fwe);
2341 if (ret < 0) {
2342 dev_printk(KERN_ERR, &interface->dev,
2343 "error %d downloading internal firmware\n",
2344 ret);
2345 goto error;
2346 }
2347 usb_put_dev(udev);
2348 return ret;
2349 }
2350
2351 /* Internal firmware already inside the device. Get firmware
2352 * version to test if external firmware is loaded.
2353 * This works only for newer firmware, e.g. the Intersil 0.90.x
2354 * says "control timeout on ep0in" and subsequent
2355 * at76_get_op_mode() fail too :-( */
2356
2357 /* if version >= 0.100.x.y or device with built-in flash we can
2358 * query the device for the fw version */
2359 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2360 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2361 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2362 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2363 need_ext_fw = 1;
2364 } else
2365 /* No way to check firmware version, reload to be sure */
2366 need_ext_fw = 1;
2367
2368 if (need_ext_fw) {
2369 dev_printk(KERN_DEBUG, &interface->dev,
2370 "downloading external firmware\n");
2371
2372 ret = at76_load_external_fw(udev, fwe);
2373 if (ret)
2374 goto error;
2375
2376 /* Re-check firmware version */
2377 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2378 if (ret < 0) {
2379 dev_printk(KERN_ERR, &interface->dev,
2380 "error %d getting firmware version\n", ret);
2381 goto error;
2382 }
2383 }
2384
2385 priv = at76_alloc_new_device(udev);
2386 if (!priv) {
2387 ret = -ENOMEM;
2388 goto error;
2389 }
2390
2391 usb_set_intfdata(interface, priv);
2392
2393 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2394 priv->board_type = board_type;
2395
2396 ret = at76_init_new_device(priv, interface);
2397 if (ret < 0)
2398 at76_delete_device(priv);
2399
2400 return ret;
2401
2402 error:
2403 usb_put_dev(udev);
2404 return ret;
2405 }
2406
2407 static void at76_disconnect(struct usb_interface *interface)
2408 {
2409 struct at76_priv *priv;
2410
2411 priv = usb_get_intfdata(interface);
2412 usb_set_intfdata(interface, NULL);
2413
2414 /* Disconnect after loading internal firmware */
2415 if (!priv)
2416 return;
2417
2418 printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
2419 at76_delete_device(priv);
2420 dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2421 }
2422
2423 /* Structure for registering this driver with the USB subsystem */
2424 static struct usb_driver at76_driver = {
2425 .name = DRIVER_NAME,
2426 .probe = at76_probe,
2427 .disconnect = at76_disconnect,
2428 .id_table = dev_table,
2429 };
2430
2431 static int __init at76_mod_init(void)
2432 {
2433 int result;
2434
2435 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2436
2437 mutex_init(&fw_mutex);
2438
2439 /* register this driver with the USB subsystem */
2440 result = usb_register(&at76_driver);
2441 if (result < 0)
2442 printk(KERN_ERR DRIVER_NAME
2443 ": usb_register failed (status %d)\n", result);
2444
2445 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2446 return result;
2447 }
2448
2449 static void __exit at76_mod_exit(void)
2450 {
2451 int i;
2452
2453 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2454 usb_deregister(&at76_driver);
2455 for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2456 if (firmwares[i].fw)
2457 release_firmware(firmwares[i].fw);
2458 }
2459 led_trigger_unregister_simple(ledtrig_tx);
2460 }
2461
2462 module_param_named(debug, at76_debug, uint, 0600);
2463 MODULE_PARM_DESC(debug, "Debugging level");
2464
2465 module_init(at76_mod_init);
2466 module_exit(at76_mod_exit);
2467
2468 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2469 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2470 MODULE_AUTHOR("Alex <alex@foogod.com>");
2471 MODULE_AUTHOR("Nick Jones");
2472 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2473 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2474 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2475 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2476 MODULE_DESCRIPTION(DRIVER_DESC);
2477 MODULE_LICENSE("GPL");
Linux with added FPC-III support