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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[nv-tegra-linux-2.6.git] / drivers / net / wireless / at76c50x-usb.c
blob0fb419936dfff58e0b8780107c07c70d842d712b
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 list is at the wiki:
22 *
23 * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
24 *
25 */
26
27 #include <linux/init.h>
28 #include <linux/kernel.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/slab.h>
32 #include <linux/module.h>
33 #include <linux/spinlock.h>
34 #include <linux/list.h>
35 #include <linux/usb.h>
36 #include <linux/netdevice.h>
37 #include <linux/if_arp.h>
38 #include <linux/etherdevice.h>
39 #include <linux/ethtool.h>
40 #include <linux/wireless.h>
41 #include <net/iw_handler.h>
42 #include <net/ieee80211_radiotap.h>
43 #include <linux/firmware.h>
44 #include <linux/leds.h>
45 #include <net/mac80211.h>
46
47 #include "at76c50x-usb.h"
48
49 /* Version information */
50 #define DRIVER_NAME "at76c50x-usb"
51 #define DRIVER_VERSION "0.17"
52 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
53
54 /* at76_debug bits */
55 #define DBG_PROGRESS 0x00000001 /* authentication/accociation */
56 #define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */
57 #define DBG_IOCTL 0x00000004 /* ioctl calls / settings */
58 #define DBG_MAC_STATE 0x00000008 /* MAC state transitions */
59 #define DBG_TX_DATA 0x00000010 /* tx header */
60 #define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */
61 #define DBG_TX_MGMT 0x00000040 /* tx management */
62 #define DBG_RX_DATA 0x00000080 /* rx data header */
63 #define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */
64 #define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */
65 #define DBG_RX_BEACON 0x00000400 /* rx beacon */
66 #define DBG_RX_CTRL 0x00000800 /* rx control */
67 #define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */
68 #define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */
69 #define DBG_DEVSTART 0x00004000 /* fw download, device start */
70 #define DBG_URB 0x00008000 /* rx urb status, ... */
71 #define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */
72 #define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */
73 #define DBG_PM 0x00040000 /* power management settings */
74 #define DBG_BSS_MATCH 0x00080000 /* BSS match failures */
75 #define DBG_PARAMS 0x00100000 /* show configured parameters */
76 #define DBG_WAIT_COMPLETE 0x00200000 /* command completion */
77 #define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */
78 #define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */
79 #define DBG_MONITOR_MODE 0x01000000 /* monitor mode */
80 #define DBG_MIB 0x02000000 /* dump all MIBs on startup */
81 #define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */
82 #define DBG_WE_EVENTS 0x08000000 /* dump wireless events */
83 #define DBG_FW 0x10000000 /* firmware download */
84 #define DBG_DFU 0x20000000 /* device firmware upgrade */
85 #define DBG_CMD 0x40000000
86 #define DBG_MAC80211 0x80000000
87
88 #define DBG_DEFAULTS 0
89
90 /* Use our own dbg macro */
91 #define at76_dbg(bits, format, arg...) \
92 do { \
93 if (at76_debug & (bits)) \
94 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
95 ## arg); \
96 } while (0)
97
98 #define at76_dbg_dump(bits, buf, len, format, arg...) \
99 do { \
100 if (at76_debug & (bits)) { \
101 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
102 ## arg); \
103 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, \
104 buf, len); \
105 } \
106 } while (0)
107
108 static uint at76_debug = DBG_DEFAULTS;
109
110 /* Protect against concurrent firmware loading and parsing */
111 static struct mutex fw_mutex;
112
113 static struct fwentry firmwares[] = {
114 [0] = { "" },
115 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
116 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
117 [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
118 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
119 [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
120 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
121 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
122 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
123 };
124 MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
125 MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
126 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
127 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
128 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
129 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
130 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
131 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
132
133 #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
134
135 static struct usb_device_id dev_table[] = {
136 /*
137 * at76c503-i3861
138 */
139 /* Generic AT76C503/3861 device */
140 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
141 /* Linksys WUSB11 v2.1/v2.6 */
142 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
143 /* Netgear MA101 rev. A */
144 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
145 /* Tekram U300C / Allnet ALL0193 */
146 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
147 /* HP HN210W J7801A */
148 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
149 /* Sitecom/Z-Com/Zyxel M4Y-750 */
150 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
151 /* Dynalink/Askey WLL013 (intersil) */
152 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
153 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
154 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
155 /* BenQ AWL300 */
156 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
157 /* Addtron AWU-120, Compex WLU11 */
158 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
159 /* Intel AP310 AnyPoint II USB */
160 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
161 /* Dynalink L11U */
162 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
163 /* Arescom WL-210, FCC id 07J-GL2411USB */
164 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
165 /* I-O DATA WN-B11/USB */
166 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
167 /* BT Voyager 1010 */
168 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
169 /*
170 * at76c503-i3863
171 */
172 /* Generic AT76C503/3863 device */
173 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
174 /* Samsung SWL-2100U */
175 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
176 /*
177 * at76c503-rfmd
178 */
179 /* Generic AT76C503/RFMD device */
180 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
181 /* Dynalink/Askey WLL013 (rfmd) */
182 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
183 /* Linksys WUSB11 v2.6 */
184 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
185 /* Network Everywhere NWU11B */
186 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
187 /* Netgear MA101 rev. B */
188 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
189 /* D-Link DWL-120 rev. E */
190 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
191 /* Actiontec 802UAT1, HWU01150-01UK */
192 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
193 /* AirVast W-Buddie WN210 */
194 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
195 /* Dick Smith Electronics XH1153 802.11b USB adapter */
196 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
197 /* CNet CNUSB611 */
198 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
199 /* FiberLine FL-WL200U */
200 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
201 /* BenQ AWL400 USB stick */
202 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
203 /* 3Com 3CRSHEW696 */
204 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
205 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
206 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
207 /* Belkin F5D6050, version 2 */
208 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
209 /* iBlitzz, BWU613 (not *B or *SB) */
210 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
211 /* Gigabyte GN-WLBM101 */
212 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
213 /* Planex GW-US11S */
214 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
215 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
216 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
217 /* Corega Wireless LAN USB-11 mini */
218 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
219 /* Corega Wireless LAN USB-11 mini2 */
220 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
221 /* Uniden PCW100 */
222 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
223 /*
224 * at76c503-rfmd-acc
225 */
226 /* SMC2664W */
227 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
228 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
229 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
230 /*
231 * at76c505-rfmd
232 */
233 /* Generic AT76C505/RFMD */
234 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
235 /*
236 * at76c505-rfmd2958
237 */
238 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
239 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
240 /* Fiberline FL-WL240U */
241 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
242 /* CNet CNUSB-611G */
243 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
244 /* Linksys WUSB11 v2.8 */
245 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
246 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
247 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
248 /* Corega WLAN USB Stick 11 */
249 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
250 /* Microstar MSI Box MS6978 */
251 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
252 /*
253 * at76c505a-rfmd2958
254 */
255 /* Generic AT76C505A device */
256 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
257 /* Generic AT76C505AS device */
258 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
259 /* Siemens Gigaset USB WLAN Adapter 11 */
260 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
261 /* OQO Model 01+ Internal Wi-Fi */
262 { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
263 /*
264 * at76c505amx-rfmd
265 */
266 /* Generic AT76C505AMX device */
267 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
268 { }
269 };
270
271 MODULE_DEVICE_TABLE(usb, dev_table);
272
273 /* Supported rates of this hardware, bit 7 marks basic rates */
274 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
275
276 static const char *const preambles[] = { "long", "short", "auto" };
277
278 /* Firmware download */
279 /* DFU states */
280 #define STATE_IDLE 0x00
281 #define STATE_DETACH 0x01
282 #define STATE_DFU_IDLE 0x02
283 #define STATE_DFU_DOWNLOAD_SYNC 0x03
284 #define STATE_DFU_DOWNLOAD_BUSY 0x04
285 #define STATE_DFU_DOWNLOAD_IDLE 0x05
286 #define STATE_DFU_MANIFEST_SYNC 0x06
287 #define STATE_DFU_MANIFEST 0x07
288 #define STATE_DFU_MANIFEST_WAIT_RESET 0x08
289 #define STATE_DFU_UPLOAD_IDLE 0x09
290 #define STATE_DFU_ERROR 0x0a
291
292 /* DFU commands */
293 #define DFU_DETACH 0
294 #define DFU_DNLOAD 1
295 #define DFU_UPLOAD 2
296 #define DFU_GETSTATUS 3
297 #define DFU_CLRSTATUS 4
298 #define DFU_GETSTATE 5
299 #define DFU_ABORT 6
300
301 #define FW_BLOCK_SIZE 1024
302
303 struct dfu_status {
304 unsigned char status;
305 unsigned char poll_timeout[3];
306 unsigned char state;
307 unsigned char string;
308 } __attribute__((packed));
309
310 static inline int at76_is_intersil(enum board_type board)
311 {
312 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
313 }
314
315 static inline int at76_is_503rfmd(enum board_type board)
316 {
317 return (board == BOARD_503 || board == BOARD_503_ACC);
318 }
319
320 static inline int at76_is_505a(enum board_type board)
321 {
322 return (board == BOARD_505A || board == BOARD_505AMX);
323 }
324
325 /* Load a block of the first (internal) part of the firmware */
326 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
327 void *block, int size)
328 {
329 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
330 USB_TYPE_CLASS | USB_DIR_OUT |
331 USB_RECIP_INTERFACE, blockno, 0, block, size,
332 USB_CTRL_GET_TIMEOUT);
333 }
334
335 static int at76_dfu_get_status(struct usb_device *udev,
336 struct dfu_status *status)
337 {
338 int ret;
339
340 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
341 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
342 0, 0, status, sizeof(struct dfu_status),
343 USB_CTRL_GET_TIMEOUT);
344 return ret;
345 }
346
347 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
348 {
349 int ret;
350
351 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
352 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
353 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
354 return ret;
355 }
356
357 /* Convert timeout from the DFU status to jiffies */
358 static inline unsigned long at76_get_timeout(struct dfu_status *s)
359 {
360 return msecs_to_jiffies((s->poll_timeout[2] << 16)
361 | (s->poll_timeout[1] << 8)
362 | (s->poll_timeout[0]));
363 }
364
365 /* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
366 * its value in jiffies in the MANIFEST_SYNC state. */
367 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
368 int manifest_sync_timeout)
369 {
370 u8 *block;
371 struct dfu_status dfu_stat_buf;
372 int ret = 0;
373 int need_dfu_state = 1;
374 int is_done = 0;
375 u8 dfu_state = 0;
376 u32 dfu_timeout = 0;
377 int bsize = 0;
378 int blockno = 0;
379
380 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
381 manifest_sync_timeout);
382
383 if (!size) {
384 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
385 return -EINVAL;
386 }
387
388 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
389 if (!block)
390 return -ENOMEM;
391
392 do {
393 if (need_dfu_state) {
394 ret = at76_dfu_get_state(udev, &dfu_state);
395 if (ret < 0) {
396 dev_printk(KERN_ERR, &udev->dev,
397 "cannot get DFU state: %d\n", ret);
398 goto exit;
399 }
400 need_dfu_state = 0;
401 }
402
403 switch (dfu_state) {
404 case STATE_DFU_DOWNLOAD_SYNC:
405 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
406 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
407 if (ret >= 0) {
408 dfu_state = dfu_stat_buf.state;
409 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
410 need_dfu_state = 0;
411 } else
412 dev_printk(KERN_ERR, &udev->dev,
413 "at76_dfu_get_status returned %d\n",
414 ret);
415 break;
416
417 case STATE_DFU_DOWNLOAD_BUSY:
418 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
419 need_dfu_state = 1;
420
421 at76_dbg(DBG_DFU, "DFU: Resetting device");
422 schedule_timeout_interruptible(dfu_timeout);
423 break;
424
425 case STATE_DFU_DOWNLOAD_IDLE:
426 at76_dbg(DBG_DFU, "DOWNLOAD...");
427 /* fall through */
428 case STATE_DFU_IDLE:
429 at76_dbg(DBG_DFU, "DFU IDLE");
430
431 bsize = min_t(int, size, FW_BLOCK_SIZE);
432 memcpy(block, buf, bsize);
433 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
434 "bsize = %4d, blockno = %2d", size, bsize,
435 blockno);
436 ret =
437 at76_load_int_fw_block(udev, blockno, block, bsize);
438 buf += bsize;
439 size -= bsize;
440 blockno++;
441
442 if (ret != bsize)
443 dev_printk(KERN_ERR, &udev->dev,
444 "at76_load_int_fw_block "
445 "returned %d\n", ret);
446 need_dfu_state = 1;
447 break;
448
449 case STATE_DFU_MANIFEST_SYNC:
450 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
451
452 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
453 if (ret < 0)
454 break;
455
456 dfu_state = dfu_stat_buf.state;
457 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
458 need_dfu_state = 0;
459
460 /* override the timeout from the status response,
461 needed for AT76C505A */
462 if (manifest_sync_timeout > 0)
463 dfu_timeout = manifest_sync_timeout;
464
465 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
466 schedule_timeout_interruptible(dfu_timeout);
467 break;
468
469 case STATE_DFU_MANIFEST:
470 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
471 is_done = 1;
472 break;
473
474 case STATE_DFU_MANIFEST_WAIT_RESET:
475 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
476 is_done = 1;
477 break;
478
479 case STATE_DFU_UPLOAD_IDLE:
480 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
481 break;
482
483 case STATE_DFU_ERROR:
484 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
485 ret = -EPIPE;
486 break;
487
488 default:
489 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
490 ret = -EINVAL;
491 break;
492 }
493 } while (!is_done && (ret >= 0));
494
495 exit:
496 kfree(block);
497 if (ret >= 0)
498 ret = 0;
499
500 return ret;
501 }
502
503 #define HEX2STR_BUFFERS 4
504 #define HEX2STR_MAX_LEN 64
505 #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
506
507 /* Convert binary data into hex string */
508 static char *hex2str(void *buf, int len)
509 {
510 static atomic_t a = ATOMIC_INIT(0);
511 static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
512 char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
513 char *obuf = ret;
514 u8 *ibuf = buf;
515
516 if (len > HEX2STR_MAX_LEN)
517 len = HEX2STR_MAX_LEN;
518
519 if (len <= 0) {
520 ret[0] = '\0';
521 return ret;
522 }
523
524 while (len--) {
525 *obuf++ = BIN2HEX(*ibuf >> 4);
526 *obuf++ = BIN2HEX(*ibuf & 0xf);
527 *obuf++ = '-';
528 ibuf++;
529 }
530 *(--obuf) = '\0';
531
532 return ret;
533 }
534
535 /* LED trigger */
536 static int tx_activity;
537 static void at76_ledtrig_tx_timerfunc(unsigned long data);
538 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
539 DEFINE_LED_TRIGGER(ledtrig_tx);
540
541 static void at76_ledtrig_tx_timerfunc(unsigned long data)
542 {
543 static int tx_lastactivity;
544
545 if (tx_lastactivity != tx_activity) {
546 tx_lastactivity = tx_activity;
547 led_trigger_event(ledtrig_tx, LED_FULL);
548 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
549 } else
550 led_trigger_event(ledtrig_tx, LED_OFF);
551 }
552
553 static void at76_ledtrig_tx_activity(void)
554 {
555 tx_activity++;
556 if (!timer_pending(&ledtrig_tx_timer))
557 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
558 }
559
560 static int at76_remap(struct usb_device *udev)
561 {
562 int ret;
563 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
564 USB_TYPE_VENDOR | USB_DIR_OUT |
565 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
566 USB_CTRL_GET_TIMEOUT);
567 if (ret < 0)
568 return ret;
569 return 0;
570 }
571
572 static int at76_get_op_mode(struct usb_device *udev)
573 {
574 int ret;
575 u8 saved;
576 u8 *op_mode;
577
578 op_mode = kmalloc(1, GFP_NOIO);
579 if (!op_mode)
580 return -ENOMEM;
581 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
582 USB_TYPE_VENDOR | USB_DIR_IN |
583 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
584 USB_CTRL_GET_TIMEOUT);
585 saved = *op_mode;
586 kfree(op_mode);
587
588 if (ret < 0)
589 return ret;
590 else if (ret < 1)
591 return -EIO;
592 else
593 return saved;
594 }
595
596 /* Load a block of the second ("external") part of the firmware */
597 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
598 void *block, int size)
599 {
600 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
601 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
602 0x0802, blockno, block, size,
603 USB_CTRL_GET_TIMEOUT);
604 }
605
606 static inline int at76_get_hw_cfg(struct usb_device *udev,
607 union at76_hwcfg *buf, int buf_size)
608 {
609 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
610 USB_TYPE_VENDOR | USB_DIR_IN |
611 USB_RECIP_INTERFACE, 0x0a02, 0,
612 buf, buf_size, USB_CTRL_GET_TIMEOUT);
613 }
614
615 /* Intersil boards use a different "value" for GetHWConfig requests */
616 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
617 union at76_hwcfg *buf, int buf_size)
618 {
619 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
620 USB_TYPE_VENDOR | USB_DIR_IN |
621 USB_RECIP_INTERFACE, 0x0902, 0,
622 buf, buf_size, USB_CTRL_GET_TIMEOUT);
623 }
624
625 /* Get the hardware configuration for the adapter and put it to the appropriate
626 * fields of 'priv' (the GetHWConfig request and interpretation of the result
627 * depends on the board type) */
628 static int at76_get_hw_config(struct at76_priv *priv)
629 {
630 int ret;
631 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
632
633 if (!hwcfg)
634 return -ENOMEM;
635
636 if (at76_is_intersil(priv->board_type)) {
637 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
638 sizeof(hwcfg->i));
639 if (ret < 0)
640 goto exit;
641 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
642 priv->regulatory_domain = hwcfg->i.regulatory_domain;
643 } else if (at76_is_503rfmd(priv->board_type)) {
644 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
645 if (ret < 0)
646 goto exit;
647 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
648 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
649 } else {
650 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
651 if (ret < 0)
652 goto exit;
653 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
654 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
655 }
656
657 exit:
658 kfree(hwcfg);
659 if (ret < 0)
660 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
661 wiphy_name(priv->hw->wiphy), ret);
662
663 return ret;
664 }
665
666 static struct reg_domain const *at76_get_reg_domain(u16 code)
667 {
668 int i;
669 static struct reg_domain const fd_tab[] = {
670 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */
671 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
672 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */
673 { 0x31, "Spain", 0x600 }, /* ch 10-11 */
674 { 0x32, "France", 0x1e00 }, /* ch 10-13 */
675 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */
676 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */
677 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */
678 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */
679 };
680
681 /* Last entry is fallback for unknown domain code */
682 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
683 if (code == fd_tab[i].code)
684 break;
685
686 return &fd_tab[i];
687 }
688
689 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
690 int buf_size)
691 {
692 int ret;
693
694 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
695 USB_TYPE_VENDOR | USB_DIR_IN |
696 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
697 USB_CTRL_GET_TIMEOUT);
698 if (ret >= 0 && ret != buf_size)
699 return -EIO;
700 return ret;
701 }
702
703 /* Return positive number for status, negative for an error */
704 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
705 {
706 u8 *stat_buf;
707 int ret;
708
709 stat_buf = kmalloc(40, GFP_NOIO);
710 if (!stat_buf)
711 return -ENOMEM;
712
713 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
714 USB_TYPE_VENDOR | USB_DIR_IN |
715 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
716 40, USB_CTRL_GET_TIMEOUT);
717 if (ret >= 0)
718 ret = stat_buf[5];
719 kfree(stat_buf);
720
721 return ret;
722 }
723
724 #define MAKE_CMD_CASE(c) case (c): return #c
725 static const char *at76_get_cmd_string(u8 cmd_status)
726 {
727 switch (cmd_status) {
728 MAKE_CMD_CASE(CMD_SET_MIB);
729 MAKE_CMD_CASE(CMD_GET_MIB);
730 MAKE_CMD_CASE(CMD_SCAN);
731 MAKE_CMD_CASE(CMD_JOIN);
732 MAKE_CMD_CASE(CMD_START_IBSS);
733 MAKE_CMD_CASE(CMD_RADIO_ON);
734 MAKE_CMD_CASE(CMD_RADIO_OFF);
735 MAKE_CMD_CASE(CMD_STARTUP);
736 }
737
738 return "UNKNOWN";
739 }
740
741 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
742 int buf_size)
743 {
744 int ret;
745 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
746 buf_size, GFP_KERNEL);
747
748 if (!cmd_buf)
749 return -ENOMEM;
750
751 cmd_buf->cmd = cmd;
752 cmd_buf->reserved = 0;
753 cmd_buf->size = cpu_to_le16(buf_size);
754 memcpy(cmd_buf->data, buf, buf_size);
755
756 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
757 "issuing command %s (0x%02x)",
758 at76_get_cmd_string(cmd), cmd);
759
760 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
761 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
762 0, 0, cmd_buf,
763 sizeof(struct at76_command) + buf_size,
764 USB_CTRL_GET_TIMEOUT);
765 kfree(cmd_buf);
766 return ret;
767 }
768
769 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
770 static const char *at76_get_cmd_status_string(u8 cmd_status)
771 {
772 switch (cmd_status) {
773 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
774 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
775 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
776 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
777 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
778 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
779 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
780 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
781 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
782 }
783
784 return "UNKNOWN";
785 }
786
787 /* Wait until the command is completed */
788 static int at76_wait_completion(struct at76_priv *priv, int cmd)
789 {
790 int status = 0;
791 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
792
793 do {
794 status = at76_get_cmd_status(priv->udev, cmd);
795 if (status < 0) {
796 printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
797 wiphy_name(priv->hw->wiphy), status);
798 break;
799 }
800
801 at76_dbg(DBG_WAIT_COMPLETE,
802 "%s: Waiting on cmd %d, status = %d (%s)",
803 wiphy_name(priv->hw->wiphy), cmd, status,
804 at76_get_cmd_status_string(status));
805
806 if (status != CMD_STATUS_IN_PROGRESS
807 && status != CMD_STATUS_IDLE)
808 break;
809
810 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
811 if (time_after(jiffies, timeout)) {
812 printk(KERN_ERR
813 "%s: completion timeout for command %d\n",
814 wiphy_name(priv->hw->wiphy), cmd);
815 status = -ETIMEDOUT;
816 break;
817 }
818 } while (1);
819
820 return status;
821 }
822
823 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
824 {
825 int ret;
826
827 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
828 offsetof(struct set_mib_buffer,
829 data) + buf->size);
830 if (ret < 0)
831 return ret;
832
833 ret = at76_wait_completion(priv, CMD_SET_MIB);
834 if (ret != CMD_STATUS_COMPLETE) {
835 printk(KERN_INFO
836 "%s: set_mib: at76_wait_completion failed "
837 "with %d\n", wiphy_name(priv->hw->wiphy), ret);
838 ret = -EIO;
839 }
840
841 return ret;
842 }
843
844 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
845 static int at76_set_radio(struct at76_priv *priv, int enable)
846 {
847 int ret;
848 int cmd;
849
850 if (priv->radio_on == enable)
851 return 0;
852
853 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
854
855 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
856 if (ret < 0)
857 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
858 wiphy_name(priv->hw->wiphy), cmd, ret);
859 else
860 ret = 1;
861
862 priv->radio_on = enable;
863 return ret;
864 }
865
866 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
867 static int at76_set_pm_mode(struct at76_priv *priv)
868 {
869 int ret = 0;
870
871 priv->mib_buf.type = MIB_MAC_MGMT;
872 priv->mib_buf.size = 1;
873 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
874 priv->mib_buf.data.byte = priv->pm_mode;
875
876 ret = at76_set_mib(priv, &priv->mib_buf);
877 if (ret < 0)
878 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
879 wiphy_name(priv->hw->wiphy), ret);
880
881 return ret;
882 }
883
884 static int at76_set_preamble(struct at76_priv *priv, u8 type)
885 {
886 int ret = 0;
887
888 priv->mib_buf.type = MIB_LOCAL;
889 priv->mib_buf.size = 1;
890 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
891 priv->mib_buf.data.byte = type;
892
893 ret = at76_set_mib(priv, &priv->mib_buf);
894 if (ret < 0)
895 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
896 wiphy_name(priv->hw->wiphy), ret);
897
898 return ret;
899 }
900
901 static int at76_set_frag(struct at76_priv *priv, u16 size)
902 {
903 int ret = 0;
904
905 priv->mib_buf.type = MIB_MAC;
906 priv->mib_buf.size = 2;
907 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
908 priv->mib_buf.data.word = cpu_to_le16(size);
909
910 ret = at76_set_mib(priv, &priv->mib_buf);
911 if (ret < 0)
912 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
913 wiphy_name(priv->hw->wiphy), ret);
914
915 return ret;
916 }
917
918 static int at76_set_rts(struct at76_priv *priv, u16 size)
919 {
920 int ret = 0;
921
922 priv->mib_buf.type = MIB_MAC;
923 priv->mib_buf.size = 2;
924 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
925 priv->mib_buf.data.word = cpu_to_le16(size);
926
927 ret = at76_set_mib(priv, &priv->mib_buf);
928 if (ret < 0)
929 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
930 wiphy_name(priv->hw->wiphy), ret);
931
932 return ret;
933 }
934
935 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
936 {
937 int ret = 0;
938
939 priv->mib_buf.type = MIB_LOCAL;
940 priv->mib_buf.size = 1;
941 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
942 priv->mib_buf.data.byte = onoff;
943
944 ret = at76_set_mib(priv, &priv->mib_buf);
945 if (ret < 0)
946 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
947 wiphy_name(priv->hw->wiphy), ret);
948
949 return ret;
950 }
951
952 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
953 {
954 int i;
955 int ret;
956 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
957 GFP_KERNEL);
958
959 if (!m)
960 return;
961
962 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
963 sizeof(struct mib_mac_addr));
964 if (ret < 0) {
965 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
966 wiphy_name(priv->hw->wiphy), ret);
967 goto exit;
968 }
969
970 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
971 wiphy_name(priv->hw->wiphy),
972 m->mac_addr, m->res[0], m->res[1]);
973 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
974 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
975 "status %d", wiphy_name(priv->hw->wiphy), i,
976 m->group_addr[i], m->group_addr_status[i]);
977 exit:
978 kfree(m);
979 }
980
981 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
982 {
983 int i;
984 int ret;
985 int key_len;
986 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
987
988 if (!m)
989 return;
990
991 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
992 sizeof(struct mib_mac_wep));
993 if (ret < 0) {
994 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
995 wiphy_name(priv->hw->wiphy), ret);
996 goto exit;
997 }
998
999 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1000 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1001 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
1002 m->privacy_invoked, m->wep_default_key_id,
1003 m->wep_key_mapping_len, m->exclude_unencrypted,
1004 le32_to_cpu(m->wep_icv_error_count),
1005 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1006 m->wep_default_key_id);
1007
1008 key_len = (m->encryption_level == 1) ?
1009 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1010
1011 for (i = 0; i < WEP_KEYS; i++)
1012 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1013 wiphy_name(priv->hw->wiphy), i,
1014 hex2str(m->wep_default_keyvalue[i], key_len));
1015 exit:
1016 kfree(m);
1017 }
1018
1019 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1020 {
1021 int ret;
1022 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1023 GFP_KERNEL);
1024
1025 if (!m)
1026 return;
1027
1028 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1029 sizeof(struct mib_mac_mgmt));
1030 if (ret < 0) {
1031 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1032 wiphy_name(priv->hw->wiphy), ret);
1033 goto exit;
1034 }
1035
1036 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1037 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1038 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1039 "current_bssid %pM current_essid %s current_bss_type %d "
1040 "pm_mode %d ibss_change %d res %d "
1041 "multi_domain_capability_implemented %d "
1042 "international_roaming %d country_string %.3s",
1043 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1044 le16_to_cpu(m->CFP_max_duration),
1045 le16_to_cpu(m->medium_occupancy_limit),
1046 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1047 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1048 m->CFP_period, m->current_bssid,
1049 hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1050 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1051 m->res, m->multi_domain_capability_implemented,
1052 m->multi_domain_capability_enabled, m->country_string);
1053 exit:
1054 kfree(m);
1055 }
1056
1057 static void at76_dump_mib_mac(struct at76_priv *priv)
1058 {
1059 int ret;
1060 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1061
1062 if (!m)
1063 return;
1064
1065 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1066 if (ret < 0) {
1067 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1068 wiphy_name(priv->hw->wiphy), ret);
1069 goto exit;
1070 }
1071
1072 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1073 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1074 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1075 "scan_type %d scan_channel %d probe_delay %u "
1076 "min_channel_time %d max_channel_time %d listen_int %d "
1077 "desired_ssid %s desired_bssid %pM desired_bsstype %d",
1078 wiphy_name(priv->hw->wiphy),
1079 le32_to_cpu(m->max_tx_msdu_lifetime),
1080 le32_to_cpu(m->max_rx_lifetime),
1081 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1082 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1083 m->short_retry_time, m->long_retry_time, m->scan_type,
1084 m->scan_channel, le16_to_cpu(m->probe_delay),
1085 le16_to_cpu(m->min_channel_time),
1086 le16_to_cpu(m->max_channel_time),
1087 le16_to_cpu(m->listen_interval),
1088 hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1089 m->desired_bssid, m->desired_bsstype);
1090 exit:
1091 kfree(m);
1092 }
1093
1094 static void at76_dump_mib_phy(struct at76_priv *priv)
1095 {
1096 int ret;
1097 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1098
1099 if (!m)
1100 return;
1101
1102 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1103 if (ret < 0) {
1104 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1105 wiphy_name(priv->hw->wiphy), ret);
1106 goto exit;
1107 }
1108
1109 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1110 "sifs_time %d preamble_length %d plcp_header_length %d "
1111 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1112 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1113 "phy_type %d current_reg_domain %d",
1114 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1115 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1116 le16_to_cpu(m->preamble_length),
1117 le16_to_cpu(m->plcp_header_length),
1118 le16_to_cpu(m->mpdu_max_length),
1119 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1120 m->operation_rate_set[1], m->operation_rate_set[2],
1121 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1122 m->phy_type, m->current_reg_domain);
1123 exit:
1124 kfree(m);
1125 }
1126
1127 static void at76_dump_mib_local(struct at76_priv *priv)
1128 {
1129 int ret;
1130 struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1131
1132 if (!m)
1133 return;
1134
1135 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1136 if (ret < 0) {
1137 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1138 wiphy_name(priv->hw->wiphy), ret);
1139 goto exit;
1140 }
1141
1142 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1143 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1144 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1145 m->beacon_enable,
1146 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1147 m->preamble_type);
1148 exit:
1149 kfree(m);
1150 }
1151
1152 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1153 {
1154 int ret;
1155 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1156
1157 if (!m)
1158 return;
1159
1160 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1161 sizeof(struct mib_mdomain));
1162 if (ret < 0) {
1163 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1164 wiphy_name(priv->hw->wiphy), ret);
1165 goto exit;
1166 }
1167
1168 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1169 wiphy_name(priv->hw->wiphy),
1170 hex2str(m->channel_list, sizeof(m->channel_list)));
1171
1172 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1173 wiphy_name(priv->hw->wiphy),
1174 hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1175 exit:
1176 kfree(m);
1177 }
1178
1179 /* Enable monitor mode */
1180 static int at76_start_monitor(struct at76_priv *priv)
1181 {
1182 struct at76_req_scan scan;
1183 int ret;
1184
1185 memset(&scan, 0, sizeof(struct at76_req_scan));
1186 memset(scan.bssid, 0xff, ETH_ALEN);
1187
1188 scan.channel = priv->channel;
1189 scan.scan_type = SCAN_TYPE_PASSIVE;
1190 scan.international_scan = 0;
1191 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1192 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1193 scan.probe_delay = cpu_to_le16(0);
1194
1195 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1196 if (ret >= 0)
1197 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1198
1199 return ret;
1200 }
1201
1202 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1203 likely to compensate a flaw in the AT76C503A USB part ... */
1204 static inline int at76_calc_padding(int wlen)
1205 {
1206 /* add the USB TX header */
1207 wlen += AT76_TX_HDRLEN;
1208
1209 wlen = wlen % 64;
1210
1211 if (wlen < 50)
1212 return 50 - wlen;
1213
1214 if (wlen >= 61)
1215 return 64 + 50 - wlen;
1216
1217 return 0;
1218 }
1219
1220 static void at76_rx_callback(struct urb *urb)
1221 {
1222 struct at76_priv *priv = urb->context;
1223
1224 priv->rx_tasklet.data = (unsigned long)urb;
1225 tasklet_schedule(&priv->rx_tasklet);
1226 return;
1227 }
1228
1229 static int at76_submit_rx_urb(struct at76_priv *priv)
1230 {
1231 int ret;
1232 int size;
1233 struct sk_buff *skb = priv->rx_skb;
1234
1235 if (!priv->rx_urb) {
1236 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
1237 wiphy_name(priv->hw->wiphy), __func__);
1238 return -EFAULT;
1239 }
1240
1241 if (!skb) {
1242 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1243 if (!skb) {
1244 printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
1245 wiphy_name(priv->hw->wiphy));
1246 ret = -ENOMEM;
1247 goto exit;
1248 }
1249 priv->rx_skb = skb;
1250 } else {
1251 skb_push(skb, skb_headroom(skb));
1252 skb_trim(skb, 0);
1253 }
1254
1255 size = skb_tailroom(skb);
1256 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1257 skb_put(skb, size), size, at76_rx_callback, priv);
1258 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1259 if (ret < 0) {
1260 if (ret == -ENODEV)
1261 at76_dbg(DBG_DEVSTART,
1262 "usb_submit_urb returned -ENODEV");
1263 else
1264 printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
1265 wiphy_name(priv->hw->wiphy), ret);
1266 }
1267
1268 exit:
1269 if (ret < 0 && ret != -ENODEV)
1270 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
1271 "driver and/or power cycle the device\n",
1272 wiphy_name(priv->hw->wiphy));
1273
1274 return ret;
1275 }
1276
1277 /* Download external firmware */
1278 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1279 {
1280 int ret;
1281 int op_mode;
1282 int blockno = 0;
1283 int bsize;
1284 u8 *block;
1285 u8 *buf = fwe->extfw;
1286 int size = fwe->extfw_size;
1287
1288 if (!buf || !size)
1289 return -ENOENT;
1290
1291 op_mode = at76_get_op_mode(udev);
1292 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1293
1294 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1295 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1296 op_mode);
1297 return -EINVAL;
1298 }
1299
1300 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1301 if (!block)
1302 return -ENOMEM;
1303
1304 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1305
1306 /* for fw >= 0.100, the device needs an extra empty block */
1307 do {
1308 bsize = min_t(int, size, FW_BLOCK_SIZE);
1309 memcpy(block, buf, bsize);
1310 at76_dbg(DBG_DEVSTART,
1311 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1312 size, bsize, blockno);
1313 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1314 if (ret != bsize) {
1315 dev_printk(KERN_ERR, &udev->dev,
1316 "loading %dth firmware block failed: %d\n",
1317 blockno, ret);
1318 goto exit;
1319 }
1320 buf += bsize;
1321 size -= bsize;
1322 blockno++;
1323 } while (bsize > 0);
1324
1325 if (at76_is_505a(fwe->board_type)) {
1326 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1327 schedule_timeout_interruptible(HZ / 5 + 1);
1328 }
1329
1330 exit:
1331 kfree(block);
1332 if (ret < 0)
1333 dev_printk(KERN_ERR, &udev->dev,
1334 "downloading external firmware failed: %d\n", ret);
1335 return ret;
1336 }
1337
1338 /* Download internal firmware */
1339 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1340 {
1341 int ret;
1342 int need_remap = !at76_is_505a(fwe->board_type);
1343
1344 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1345 need_remap ? 0 : 2 * HZ);
1346
1347 if (ret < 0) {
1348 dev_printk(KERN_ERR, &udev->dev,
1349 "downloading internal fw failed with %d\n", ret);
1350 goto exit;
1351 }
1352
1353 at76_dbg(DBG_DEVSTART, "sending REMAP");
1354
1355 /* no REMAP for 505A (see SF driver) */
1356 if (need_remap) {
1357 ret = at76_remap(udev);
1358 if (ret < 0) {
1359 dev_printk(KERN_ERR, &udev->dev,
1360 "sending REMAP failed with %d\n", ret);
1361 goto exit;
1362 }
1363 }
1364
1365 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1366 schedule_timeout_interruptible(2 * HZ + 1);
1367 usb_reset_device(udev);
1368
1369 exit:
1370 return ret;
1371 }
1372
1373 static int at76_startup_device(struct at76_priv *priv)
1374 {
1375 struct at76_card_config *ccfg = &priv->card_config;
1376 int ret;
1377
1378 at76_dbg(DBG_PARAMS,
1379 "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1380 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1381 priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1382 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1383 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1384 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1385 at76_dbg(DBG_PARAMS,
1386 "%s param: preamble %s rts %d retry %d frag %d "
1387 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1388 preambles[priv->preamble_type], priv->rts_threshold,
1389 priv->short_retry_limit, priv->frag_threshold,
1390 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1391 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1392 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1393 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1394 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1395 at76_dbg(DBG_PARAMS,
1396 "%s param: pm_mode %d pm_period %d auth_mode %s "
1397 "scan_times %d %d scan_mode %s",
1398 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1399 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1400 priv->scan_min_time, priv->scan_max_time,
1401 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1402
1403 memset(ccfg, 0, sizeof(struct at76_card_config));
1404 ccfg->promiscuous_mode = 0;
1405 ccfg->short_retry_limit = priv->short_retry_limit;
1406
1407 if (priv->wep_enabled) {
1408 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1409 ccfg->encryption_type = 2;
1410 else
1411 ccfg->encryption_type = 1;
1412
1413 /* jal: always exclude unencrypted if WEP is active */
1414 ccfg->exclude_unencrypted = 1;
1415 } else {
1416 ccfg->exclude_unencrypted = 0;
1417 ccfg->encryption_type = 0;
1418 }
1419
1420 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1421 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1422
1423 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1424 /* jal: really needed, we do a set_mib for autorate later ??? */
1425 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1426 ccfg->channel = priv->channel;
1427 ccfg->privacy_invoked = priv->wep_enabled;
1428 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1429 ccfg->ssid_len = priv->essid_size;
1430
1431 ccfg->wep_default_key_id = priv->wep_key_id;
1432 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1433 sizeof(priv->wep_keys));
1434
1435 ccfg->short_preamble = priv->preamble_type;
1436 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1437
1438 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1439 sizeof(struct at76_card_config));
1440 if (ret < 0) {
1441 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1442 wiphy_name(priv->hw->wiphy), ret);
1443 return ret;
1444 }
1445
1446 at76_wait_completion(priv, CMD_STARTUP);
1447
1448 /* remove BSSID from previous run */
1449 memset(priv->bssid, 0, ETH_ALEN);
1450
1451 if (at76_set_radio(priv, 1) == 1)
1452 at76_wait_completion(priv, CMD_RADIO_ON);
1453
1454 ret = at76_set_preamble(priv, priv->preamble_type);
1455 if (ret < 0)
1456 return ret;
1457
1458 ret = at76_set_frag(priv, priv->frag_threshold);
1459 if (ret < 0)
1460 return ret;
1461
1462 ret = at76_set_rts(priv, priv->rts_threshold);
1463 if (ret < 0)
1464 return ret;
1465
1466 ret = at76_set_autorate_fallback(priv,
1467 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1468 if (ret < 0)
1469 return ret;
1470
1471 ret = at76_set_pm_mode(priv);
1472 if (ret < 0)
1473 return ret;
1474
1475 if (at76_debug & DBG_MIB) {
1476 at76_dump_mib_mac(priv);
1477 at76_dump_mib_mac_addr(priv);
1478 at76_dump_mib_mac_mgmt(priv);
1479 at76_dump_mib_mac_wep(priv);
1480 at76_dump_mib_mdomain(priv);
1481 at76_dump_mib_phy(priv);
1482 at76_dump_mib_local(priv);
1483 }
1484
1485 return 0;
1486 }
1487
1488 /* Enable or disable promiscuous mode */
1489 static void at76_work_set_promisc(struct work_struct *work)
1490 {
1491 struct at76_priv *priv = container_of(work, struct at76_priv,
1492 work_set_promisc);
1493 int ret = 0;
1494
1495 if (priv->device_unplugged)
1496 return;
1497
1498 mutex_lock(&priv->mtx);
1499
1500 priv->mib_buf.type = MIB_LOCAL;
1501 priv->mib_buf.size = 1;
1502 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1503 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1504
1505 ret = at76_set_mib(priv, &priv->mib_buf);
1506 if (ret < 0)
1507 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
1508 wiphy_name(priv->hw->wiphy), ret);
1509
1510 mutex_unlock(&priv->mtx);
1511 }
1512
1513 /* Submit Rx urb back to the device */
1514 static void at76_work_submit_rx(struct work_struct *work)
1515 {
1516 struct at76_priv *priv = container_of(work, struct at76_priv,
1517 work_submit_rx);
1518
1519 mutex_lock(&priv->mtx);
1520 at76_submit_rx_urb(priv);
1521 mutex_unlock(&priv->mtx);
1522 }
1523
1524 static void at76_rx_tasklet(unsigned long param)
1525 {
1526 struct urb *urb = (struct urb *)param;
1527 struct at76_priv *priv = urb->context;
1528 struct at76_rx_buffer *buf;
1529 struct ieee80211_rx_status rx_status = { 0 };
1530
1531 if (priv->device_unplugged) {
1532 at76_dbg(DBG_DEVSTART, "device unplugged");
1533 if (urb)
1534 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1535 return;
1536 }
1537
1538 if (!priv->rx_skb || !priv->rx_skb->data)
1539 return;
1540
1541 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1542
1543 if (urb->status != 0) {
1544 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1545 at76_dbg(DBG_URB,
1546 "%s %s: - nonzero Rx bulk status received: %d",
1547 __func__, wiphy_name(priv->hw->wiphy),
1548 urb->status);
1549 return;
1550 }
1551
1552 at76_dbg(DBG_RX_ATMEL_HDR,
1553 "%s: rx frame: rate %d rssi %d noise %d link %d",
1554 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1555 buf->noise_level, buf->link_quality);
1556
1557 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1558 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1559 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1560 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1561
1562 rx_status.signal = buf->rssi;
1563 rx_status.flag |= RX_FLAG_DECRYPTED;
1564 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1565
1566 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1567 priv->rx_skb->len, priv->rx_skb->data_len);
1568 memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1569 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1570
1571 /* Use a new skb for the next receive */
1572 priv->rx_skb = NULL;
1573
1574 at76_submit_rx_urb(priv);
1575 }
1576
1577 /* Load firmware into kernel memory and parse it */
1578 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1579 enum board_type board_type)
1580 {
1581 int ret;
1582 char *str;
1583 struct at76_fw_header *fwh;
1584 struct fwentry *fwe = &firmwares[board_type];
1585
1586 mutex_lock(&fw_mutex);
1587
1588 if (fwe->loaded) {
1589 at76_dbg(DBG_FW, "re-using previously loaded fw");
1590 goto exit;
1591 }
1592
1593 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1594 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1595 if (ret < 0) {
1596 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1597 fwe->fwname);
1598 dev_printk(KERN_ERR, &udev->dev,
1599 "you may need to download the firmware from "
1600 "http://developer.berlios.de/projects/at76c503a/\n");
1601 goto exit;
1602 }
1603
1604 at76_dbg(DBG_FW, "got it.");
1605 fwh = (struct at76_fw_header *)(fwe->fw->data);
1606
1607 if (fwe->fw->size <= sizeof(*fwh)) {
1608 dev_printk(KERN_ERR, &udev->dev,
1609 "firmware is too short (0x%zx)\n", fwe->fw->size);
1610 goto exit;
1611 }
1612
1613 /* CRC currently not checked */
1614 fwe->board_type = le32_to_cpu(fwh->board_type);
1615 if (fwe->board_type != board_type) {
1616 dev_printk(KERN_ERR, &udev->dev,
1617 "board type mismatch, requested %u, got %u\n",
1618 board_type, fwe->board_type);
1619 goto exit;
1620 }
1621
1622 fwe->fw_version.major = fwh->major;
1623 fwe->fw_version.minor = fwh->minor;
1624 fwe->fw_version.patch = fwh->patch;
1625 fwe->fw_version.build = fwh->build;
1626
1627 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1628 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1629 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1630 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1631 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1632
1633 fwe->loaded = 1;
1634
1635 dev_printk(KERN_DEBUG, &udev->dev,
1636 "using firmware %s (version %d.%d.%d-%d)\n",
1637 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1638
1639 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1640 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1641 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1642 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1643
1644 exit:
1645 mutex_unlock(&fw_mutex);
1646
1647 if (fwe->loaded)
1648 return fwe;
1649 else
1650 return NULL;
1651 }
1652
1653 static void at76_mac80211_tx_callback(struct urb *urb)
1654 {
1655 struct at76_priv *priv = urb->context;
1656 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1657
1658 at76_dbg(DBG_MAC80211, "%s()", __func__);
1659
1660 switch (urb->status) {
1661 case 0:
1662 /* success */
1663 info->flags |= IEEE80211_TX_STAT_ACK;
1664 break;
1665 case -ENOENT:
1666 case -ECONNRESET:
1667 /* fail, urb has been unlinked */
1668 /* FIXME: add error message */
1669 break;
1670 default:
1671 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1672 __func__, urb->status);
1673 break;
1674 }
1675
1676 memset(&info->status, 0, sizeof(info->status));
1677
1678 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1679
1680 priv->tx_skb = NULL;
1681
1682 ieee80211_wake_queues(priv->hw);
1683 }
1684
1685 static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1686 {
1687 struct at76_priv *priv = hw->priv;
1688 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1689 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1690 int padding, submit_len, ret;
1691
1692 at76_dbg(DBG_MAC80211, "%s()", __func__);
1693
1694 if (priv->tx_urb->status == -EINPROGRESS) {
1695 printk(KERN_ERR "%s: %s called while tx urb is pending\n",
1696 wiphy_name(priv->hw->wiphy), __func__);
1697 return NETDEV_TX_BUSY;
1698 }
1699
1700 ieee80211_stop_queues(hw);
1701
1702 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
1703
1704 WARN_ON(priv->tx_skb != NULL);
1705
1706 priv->tx_skb = skb;
1707 padding = at76_calc_padding(skb->len);
1708 submit_len = AT76_TX_HDRLEN + skb->len + padding;
1709
1710 /* setup 'Atmel' header */
1711 memset(tx_buffer, 0, sizeof(*tx_buffer));
1712 tx_buffer->padding = padding;
1713 tx_buffer->wlength = cpu_to_le16(skb->len);
1714 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1715 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1716 memcpy(tx_buffer->packet, skb->data, skb->len);
1717
1718 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1719 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1720 tx_buffer->padding, tx_buffer->tx_rate);
1721
1722 /* send stuff */
1723 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1724 "%s(): tx_buffer %d bytes:", __func__, submit_len);
1725 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1726 submit_len, at76_mac80211_tx_callback, priv);
1727 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1728 if (ret) {
1729 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1730 wiphy_name(priv->hw->wiphy), ret);
1731 if (ret == -EINVAL)
1732 printk(KERN_ERR
1733 "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
1734 wiphy_name(priv->hw->wiphy), priv->tx_urb,
1735 priv->tx_urb->hcpriv, priv->tx_urb->complete);
1736 }
1737
1738 return 0;
1739 }
1740
1741 static int at76_mac80211_start(struct ieee80211_hw *hw)
1742 {
1743 struct at76_priv *priv = hw->priv;
1744 int ret;
1745
1746 at76_dbg(DBG_MAC80211, "%s()", __func__);
1747
1748 mutex_lock(&priv->mtx);
1749
1750 ret = at76_submit_rx_urb(priv);
1751 if (ret < 0) {
1752 printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
1753 wiphy_name(priv->hw->wiphy), ret);
1754 goto error;
1755 }
1756
1757 at76_startup_device(priv);
1758
1759 at76_start_monitor(priv);
1760
1761 error:
1762 mutex_unlock(&priv->mtx);
1763
1764 return 0;
1765 }
1766
1767 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1768 {
1769 struct at76_priv *priv = hw->priv;
1770
1771 at76_dbg(DBG_MAC80211, "%s()", __func__);
1772
1773 cancel_delayed_work(&priv->dwork_hw_scan);
1774 cancel_work_sync(&priv->work_set_promisc);
1775
1776 mutex_lock(&priv->mtx);
1777
1778 if (!priv->device_unplugged) {
1779 /* We are called by "ifconfig ethX down", not because the
1780 * device is not available anymore. */
1781 at76_set_radio(priv, 0);
1782
1783 /* We unlink rx_urb because at76_open() re-submits it.
1784 * If unplugged, at76_delete_device() takes care of it. */
1785 usb_kill_urb(priv->rx_urb);
1786 }
1787
1788 mutex_unlock(&priv->mtx);
1789 }
1790
1791 static int at76_add_interface(struct ieee80211_hw *hw,
1792 struct ieee80211_vif *vif)
1793 {
1794 struct at76_priv *priv = hw->priv;
1795 int ret = 0;
1796
1797 at76_dbg(DBG_MAC80211, "%s()", __func__);
1798
1799 mutex_lock(&priv->mtx);
1800
1801 switch (vif->type) {
1802 case NL80211_IFTYPE_STATION:
1803 priv->iw_mode = IW_MODE_INFRA;
1804 break;
1805 default:
1806 ret = -EOPNOTSUPP;
1807 goto exit;
1808 }
1809
1810 exit:
1811 mutex_unlock(&priv->mtx);
1812
1813 return ret;
1814 }
1815
1816 static void at76_remove_interface(struct ieee80211_hw *hw,
1817 struct ieee80211_vif *vif)
1818 {
1819 at76_dbg(DBG_MAC80211, "%s()", __func__);
1820 }
1821
1822 static int at76_join(struct at76_priv *priv)
1823 {
1824 struct at76_req_join join;
1825 int ret;
1826
1827 memset(&join, 0, sizeof(struct at76_req_join));
1828 memcpy(join.essid, priv->essid, priv->essid_size);
1829 join.essid_size = priv->essid_size;
1830 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1831 join.bss_type = INFRASTRUCTURE_MODE;
1832 join.channel = priv->channel;
1833 join.timeout = cpu_to_le16(2000);
1834
1835 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1836 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1837 sizeof(struct at76_req_join));
1838
1839 if (ret < 0) {
1840 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1841 wiphy_name(priv->hw->wiphy), ret);
1842 return 0;
1843 }
1844
1845 ret = at76_wait_completion(priv, CMD_JOIN);
1846 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1847 if (ret != CMD_STATUS_COMPLETE) {
1848 printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
1849 wiphy_name(priv->hw->wiphy), ret);
1850 return 0;
1851 }
1852
1853 at76_set_pm_mode(priv);
1854
1855 return 0;
1856 }
1857
1858 static void at76_dwork_hw_scan(struct work_struct *work)
1859 {
1860 struct at76_priv *priv = container_of(work, struct at76_priv,
1861 dwork_hw_scan.work);
1862 int ret;
1863
1864 if (priv->device_unplugged)
1865 return;
1866
1867 mutex_lock(&priv->mtx);
1868
1869 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1870 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1871
1872 /* FIXME: add maximum time for scan to complete */
1873
1874 if (ret != CMD_STATUS_COMPLETE) {
1875 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1876 SCAN_POLL_INTERVAL);
1877 mutex_unlock(&priv->mtx);
1878 return;
1879 }
1880
1881 if (is_valid_ether_addr(priv->bssid))
1882 at76_join(priv);
1883
1884 mutex_unlock(&priv->mtx);
1885
1886 ieee80211_scan_completed(priv->hw, false);
1887
1888 ieee80211_wake_queues(priv->hw);
1889 }
1890
1891 static int at76_hw_scan(struct ieee80211_hw *hw,
1892 struct cfg80211_scan_request *req)
1893 {
1894 struct at76_priv *priv = hw->priv;
1895 struct at76_req_scan scan;
1896 u8 *ssid = NULL;
1897 int ret, len = 0;
1898
1899 at76_dbg(DBG_MAC80211, "%s():", __func__);
1900
1901 if (priv->device_unplugged)
1902 return 0;
1903
1904 mutex_lock(&priv->mtx);
1905
1906 ieee80211_stop_queues(hw);
1907
1908 memset(&scan, 0, sizeof(struct at76_req_scan));
1909 memset(scan.bssid, 0xFF, ETH_ALEN);
1910
1911 if (req->n_ssids) {
1912 scan.scan_type = SCAN_TYPE_ACTIVE;
1913 ssid = req->ssids[0].ssid;
1914 len = req->ssids[0].ssid_len;
1915 } else {
1916 scan.scan_type = SCAN_TYPE_PASSIVE;
1917 }
1918
1919 if (len) {
1920 memcpy(scan.essid, ssid, len);
1921 scan.essid_size = len;
1922 }
1923
1924 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1925 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1926 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1927 scan.international_scan = 0;
1928
1929 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1930 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1931
1932 if (ret < 0) {
1933 err("CMD_SCAN failed: %d", ret);
1934 goto exit;
1935 }
1936
1937 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1938 SCAN_POLL_INTERVAL);
1939
1940 exit:
1941 mutex_unlock(&priv->mtx);
1942
1943 return 0;
1944 }
1945
1946 static int at76_config(struct ieee80211_hw *hw, u32 changed)
1947 {
1948 struct at76_priv *priv = hw->priv;
1949
1950 at76_dbg(DBG_MAC80211, "%s(): channel %d",
1951 __func__, hw->conf.channel->hw_value);
1952 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1953
1954 mutex_lock(&priv->mtx);
1955
1956 priv->channel = hw->conf.channel->hw_value;
1957
1958 if (is_valid_ether_addr(priv->bssid))
1959 at76_join(priv);
1960 else
1961 at76_start_monitor(priv);
1962
1963 mutex_unlock(&priv->mtx);
1964
1965 return 0;
1966 }
1967
1968 static void at76_bss_info_changed(struct ieee80211_hw *hw,
1969 struct ieee80211_vif *vif,
1970 struct ieee80211_bss_conf *conf,
1971 u32 changed)
1972 {
1973 struct at76_priv *priv = hw->priv;
1974
1975 at76_dbg(DBG_MAC80211, "%s():", __func__);
1976
1977 if (!(changed & BSS_CHANGED_BSSID))
1978 return;
1979
1980 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
1981
1982 mutex_lock(&priv->mtx);
1983
1984 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1985
1986 if (is_valid_ether_addr(priv->bssid))
1987 /* mac80211 is joining a bss */
1988 at76_join(priv);
1989
1990 mutex_unlock(&priv->mtx);
1991 }
1992
1993 /* must be atomic */
1994 static void at76_configure_filter(struct ieee80211_hw *hw,
1995 unsigned int changed_flags,
1996 unsigned int *total_flags, u64 multicast)
1997 {
1998 struct at76_priv *priv = hw->priv;
1999 int flags;
2000
2001 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2002 "total_flags=0x%08x",
2003 __func__, changed_flags, *total_flags);
2004
2005 flags = changed_flags & AT76_SUPPORTED_FILTERS;
2006 *total_flags = AT76_SUPPORTED_FILTERS;
2007
2008 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2009 if (priv->device_unplugged)
2010 return;
2011
2012 /* FIXME: access to priv->promisc should be protected with
2013 * priv->mtx, but it's impossible because this function needs to be
2014 * atomic */
2015
2016 if (flags && !priv->promisc) {
2017 /* mac80211 wants us to enable promiscuous mode */
2018 priv->promisc = 1;
2019 } else if (!flags && priv->promisc) {
2020 /* we need to disable promiscuous mode */
2021 priv->promisc = 0;
2022 } else
2023 return;
2024
2025 ieee80211_queue_work(hw, &priv->work_set_promisc);
2026 }
2027
2028 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2029 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2030 struct ieee80211_key_conf *key)
2031 {
2032 struct at76_priv *priv = hw->priv;
2033
2034 int i;
2035
2036 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2037 "key->keylen %d",
2038 __func__, cmd, key->alg, key->keyidx, key->keylen);
2039
2040 if (key->alg != ALG_WEP)
2041 return -EOPNOTSUPP;
2042
2043 key->hw_key_idx = key->keyidx;
2044
2045 mutex_lock(&priv->mtx);
2046
2047 switch (cmd) {
2048 case SET_KEY:
2049 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2050 priv->wep_keys_len[key->keyidx] = key->keylen;
2051
2052 /* FIXME: find out how to do this properly */
2053 priv->wep_key_id = key->keyidx;
2054
2055 break;
2056 case DISABLE_KEY:
2057 default:
2058 priv->wep_keys_len[key->keyidx] = 0;
2059 break;
2060 }
2061
2062 priv->wep_enabled = 0;
2063
2064 for (i = 0; i < WEP_KEYS; i++) {
2065 if (priv->wep_keys_len[i] != 0)
2066 priv->wep_enabled = 1;
2067 }
2068
2069 at76_startup_device(priv);
2070
2071 mutex_unlock(&priv->mtx);
2072
2073 return 0;
2074 }
2075
2076 static const struct ieee80211_ops at76_ops = {
2077 .tx = at76_mac80211_tx,
2078 .add_interface = at76_add_interface,
2079 .remove_interface = at76_remove_interface,
2080 .config = at76_config,
2081 .bss_info_changed = at76_bss_info_changed,
2082 .configure_filter = at76_configure_filter,
2083 .start = at76_mac80211_start,
2084 .stop = at76_mac80211_stop,
2085 .hw_scan = at76_hw_scan,
2086 .set_key = at76_set_key,
2087 };
2088
2089 /* Allocate network device and initialize private data */
2090 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2091 {
2092 struct ieee80211_hw *hw;
2093 struct at76_priv *priv;
2094
2095 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2096 if (!hw) {
2097 printk(KERN_ERR DRIVER_NAME ": could not register"
2098 " ieee80211_hw\n");
2099 return NULL;
2100 }
2101
2102 priv = hw->priv;
2103 priv->hw = hw;
2104
2105 priv->udev = udev;
2106
2107 mutex_init(&priv->mtx);
2108 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2109 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2110 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2111
2112 tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2113
2114 priv->pm_mode = AT76_PM_OFF;
2115 priv->pm_period = 0;
2116
2117 /* unit us */
2118 priv->hw->channel_change_time = 100000;
2119
2120 return priv;
2121 }
2122
2123 static int at76_alloc_urbs(struct at76_priv *priv,
2124 struct usb_interface *interface)
2125 {
2126 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2127 int i;
2128 int buffer_size;
2129 struct usb_host_interface *iface_desc;
2130
2131 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2132
2133 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2134 interface->altsetting[0].desc.bNumEndpoints);
2135
2136 ep_in = NULL;
2137 ep_out = NULL;
2138 iface_desc = interface->cur_altsetting;
2139 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2140 endpoint = &iface_desc->endpoint[i].desc;
2141
2142 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2143 __func__, i, endpoint->bEndpointAddress,
2144 endpoint->bmAttributes);
2145
2146 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2147 ep_in = endpoint;
2148
2149 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2150 ep_out = endpoint;
2151 }
2152
2153 if (!ep_in || !ep_out) {
2154 dev_printk(KERN_ERR, &interface->dev,
2155 "bulk endpoints missing\n");
2156 return -ENXIO;
2157 }
2158
2159 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2160 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2161
2162 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2163 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2164 if (!priv->rx_urb || !priv->tx_urb) {
2165 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2166 return -ENOMEM;
2167 }
2168
2169 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2170 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2171 if (!priv->bulk_out_buffer) {
2172 dev_printk(KERN_ERR, &interface->dev,
2173 "cannot allocate output buffer\n");
2174 return -ENOMEM;
2175 }
2176
2177 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2178
2179 return 0;
2180 }
2181
2182 static struct ieee80211_rate at76_rates[] = {
2183 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2184 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2185 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2186 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2187 };
2188
2189 static struct ieee80211_channel at76_channels[] = {
2190 { .center_freq = 2412, .hw_value = 1 },
2191 { .center_freq = 2417, .hw_value = 2 },
2192 { .center_freq = 2422, .hw_value = 3 },
2193 { .center_freq = 2427, .hw_value = 4 },
2194 { .center_freq = 2432, .hw_value = 5 },
2195 { .center_freq = 2437, .hw_value = 6 },
2196 { .center_freq = 2442, .hw_value = 7 },
2197 { .center_freq = 2447, .hw_value = 8 },
2198 { .center_freq = 2452, .hw_value = 9 },
2199 { .center_freq = 2457, .hw_value = 10 },
2200 { .center_freq = 2462, .hw_value = 11 },
2201 { .center_freq = 2467, .hw_value = 12 },
2202 { .center_freq = 2472, .hw_value = 13 },
2203 { .center_freq = 2484, .hw_value = 14 }
2204 };
2205
2206 static struct ieee80211_supported_band at76_supported_band = {
2207 .channels = at76_channels,
2208 .n_channels = ARRAY_SIZE(at76_channels),
2209 .bitrates = at76_rates,
2210 .n_bitrates = ARRAY_SIZE(at76_rates),
2211 };
2212
2213 /* Register network device and initialize the hardware */
2214 static int at76_init_new_device(struct at76_priv *priv,
2215 struct usb_interface *interface)
2216 {
2217 struct wiphy *wiphy;
2218 size_t len;
2219 int ret;
2220
2221 /* set up the endpoint information */
2222 /* check out the endpoints */
2223
2224 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2225 interface->cur_altsetting->desc.bNumEndpoints);
2226
2227 ret = at76_alloc_urbs(priv, interface);
2228 if (ret < 0)
2229 goto exit;
2230
2231 /* MAC address */
2232 ret = at76_get_hw_config(priv);
2233 if (ret < 0) {
2234 dev_printk(KERN_ERR, &interface->dev,
2235 "cannot get MAC address\n");
2236 goto exit;
2237 }
2238
2239 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2240
2241 priv->channel = DEF_CHANNEL;
2242 priv->iw_mode = IW_MODE_INFRA;
2243 priv->rts_threshold = DEF_RTS_THRESHOLD;
2244 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2245 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2246 priv->txrate = TX_RATE_AUTO;
2247 priv->preamble_type = PREAMBLE_TYPE_LONG;
2248 priv->beacon_period = 100;
2249 priv->auth_mode = WLAN_AUTH_OPEN;
2250 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2251 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2252 priv->scan_mode = SCAN_TYPE_ACTIVE;
2253 priv->device_unplugged = 0;
2254
2255 /* mac80211 initialisation */
2256 wiphy = priv->hw->wiphy;
2257 priv->hw->wiphy->max_scan_ssids = 1;
2258 priv->hw->wiphy->max_scan_ie_len = 0;
2259 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2260 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2261 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2262 IEEE80211_HW_SIGNAL_UNSPEC;
2263 priv->hw->max_signal = 100;
2264
2265 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2266 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2267
2268 len = sizeof(wiphy->fw_version);
2269 snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2270 priv->fw_version.major, priv->fw_version.minor,
2271 priv->fw_version.patch, priv->fw_version.build);
2272
2273 wiphy->hw_version = priv->board_type;
2274
2275 ret = ieee80211_register_hw(priv->hw);
2276 if (ret) {
2277 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2278 ret);
2279 goto exit;
2280 }
2281
2282 priv->mac80211_registered = 1;
2283
2284 printk(KERN_INFO "%s: USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2285 wiphy_name(priv->hw->wiphy),
2286 dev_name(&interface->dev), priv->mac_addr,
2287 priv->fw_version.major, priv->fw_version.minor,
2288 priv->fw_version.patch, priv->fw_version.build);
2289 printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n",
2290 wiphy_name(priv->hw->wiphy),
2291 priv->regulatory_domain, priv->domain->name);
2292
2293 exit:
2294 return ret;
2295 }
2296
2297 static void at76_delete_device(struct at76_priv *priv)
2298 {
2299 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2300
2301 /* The device is gone, don't bother turning it off */
2302 priv->device_unplugged = 1;
2303
2304 tasklet_kill(&priv->rx_tasklet);
2305
2306 if (priv->mac80211_registered)
2307 ieee80211_unregister_hw(priv->hw);
2308
2309 if (priv->tx_urb) {
2310 usb_kill_urb(priv->tx_urb);
2311 usb_free_urb(priv->tx_urb);
2312 }
2313 if (priv->rx_urb) {
2314 usb_kill_urb(priv->rx_urb);
2315 usb_free_urb(priv->rx_urb);
2316 }
2317
2318 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2319
2320 kfree(priv->bulk_out_buffer);
2321
2322 del_timer_sync(&ledtrig_tx_timer);
2323
2324 kfree_skb(priv->rx_skb);
2325
2326 usb_put_dev(priv->udev);
2327
2328 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2329 __func__);
2330 ieee80211_free_hw(priv->hw);
2331
2332 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2333 }
2334
2335 static int at76_probe(struct usb_interface *interface,
2336 const struct usb_device_id *id)
2337 {
2338 int ret;
2339 struct at76_priv *priv;
2340 struct fwentry *fwe;
2341 struct usb_device *udev;
2342 int op_mode;
2343 int need_ext_fw = 0;
2344 struct mib_fw_version fwv;
2345 int board_type = (int)id->driver_info;
2346
2347 udev = usb_get_dev(interface_to_usbdev(interface));
2348
2349 /* Load firmware into kernel memory */
2350 fwe = at76_load_firmware(udev, board_type);
2351 if (!fwe) {
2352 ret = -ENOENT;
2353 goto error;
2354 }
2355
2356 op_mode = at76_get_op_mode(udev);
2357
2358 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2359
2360 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2361 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2362
2363 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2364 dev_printk(KERN_ERR, &interface->dev,
2365 "cannot handle a device in HW_CONFIG_MODE\n");
2366 ret = -EBUSY;
2367 goto error;
2368 }
2369
2370 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2371 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2372 /* download internal firmware part */
2373 dev_printk(KERN_DEBUG, &interface->dev,
2374 "downloading internal firmware\n");
2375 ret = at76_load_internal_fw(udev, fwe);
2376 if (ret < 0) {
2377 dev_printk(KERN_ERR, &interface->dev,
2378 "error %d downloading internal firmware\n",
2379 ret);
2380 goto error;
2381 }
2382 usb_put_dev(udev);
2383 return ret;
2384 }
2385
2386 /* Internal firmware already inside the device. Get firmware
2387 * version to test if external firmware is loaded.
2388 * This works only for newer firmware, e.g. the Intersil 0.90.x
2389 * says "control timeout on ep0in" and subsequent
2390 * at76_get_op_mode() fail too :-( */
2391
2392 /* if version >= 0.100.x.y or device with built-in flash we can
2393 * query the device for the fw version */
2394 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2395 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2396 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2397 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2398 need_ext_fw = 1;
2399 } else
2400 /* No way to check firmware version, reload to be sure */
2401 need_ext_fw = 1;
2402
2403 if (need_ext_fw) {
2404 dev_printk(KERN_DEBUG, &interface->dev,
2405 "downloading external firmware\n");
2406
2407 ret = at76_load_external_fw(udev, fwe);
2408 if (ret)
2409 goto error;
2410
2411 /* Re-check firmware version */
2412 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2413 if (ret < 0) {
2414 dev_printk(KERN_ERR, &interface->dev,
2415 "error %d getting firmware version\n", ret);
2416 goto error;
2417 }
2418 }
2419
2420 priv = at76_alloc_new_device(udev);
2421 if (!priv) {
2422 ret = -ENOMEM;
2423 goto error;
2424 }
2425
2426 usb_set_intfdata(interface, priv);
2427
2428 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2429 priv->board_type = board_type;
2430
2431 ret = at76_init_new_device(priv, interface);
2432 if (ret < 0)
2433 at76_delete_device(priv);
2434
2435 return ret;
2436
2437 error:
2438 usb_put_dev(udev);
2439 return ret;
2440 }
2441
2442 static void at76_disconnect(struct usb_interface *interface)
2443 {
2444 struct at76_priv *priv;
2445
2446 priv = usb_get_intfdata(interface);
2447 usb_set_intfdata(interface, NULL);
2448
2449 /* Disconnect after loading internal firmware */
2450 if (!priv)
2451 return;
2452
2453 printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
2454 at76_delete_device(priv);
2455 dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2456 }
2457
2458 /* Structure for registering this driver with the USB subsystem */
2459 static struct usb_driver at76_driver = {
2460 .name = DRIVER_NAME,
2461 .probe = at76_probe,
2462 .disconnect = at76_disconnect,
2463 .id_table = dev_table,
2464 };
2465
2466 static int __init at76_mod_init(void)
2467 {
2468 int result;
2469
2470 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2471
2472 mutex_init(&fw_mutex);
2473
2474 /* register this driver with the USB subsystem */
2475 result = usb_register(&at76_driver);
2476 if (result < 0)
2477 printk(KERN_ERR DRIVER_NAME
2478 ": usb_register failed (status %d)\n", result);
2479
2480 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2481 return result;
2482 }
2483
2484 static void __exit at76_mod_exit(void)
2485 {
2486 int i;
2487
2488 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2489 usb_deregister(&at76_driver);
2490 for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2491 if (firmwares[i].fw)
2492 release_firmware(firmwares[i].fw);
2493 }
2494 led_trigger_unregister_simple(ledtrig_tx);
2495 }
2496
2497 module_param_named(debug, at76_debug, uint, 0600);
2498 MODULE_PARM_DESC(debug, "Debugging level");
2499
2500 module_init(at76_mod_init);
2501 module_exit(at76_mod_exit);
2502
2503 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2504 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2505 MODULE_AUTHOR("Alex <alex@foogod.com>");
2506 MODULE_AUTHOR("Nick Jones");
2507 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2508 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2509 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2510 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2511 MODULE_DESCRIPTION(DRIVER_DESC);
2512 MODULE_LICENSE("GPL");
Mirror of NV Tegra kernel