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[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / at76c50x-usb.c
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1264b951
KV		 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 *
ba3907e5
KV		 21 * TODO list is at the wiki:
22 *
23 * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
24 *
1264b951
KV		 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
2ce4f9d8 108static uint at76_debug = DBG_DEFAULTS;
1264b951
KV		 109
110/* Protect against concurrent firmware loading and parsing */
111static struct mutex fw_mutex;
112
113static 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
125#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
126
127static struct usb_device_id dev_table[] = {
128 /*
129 * at76c503-i3861
130 */
131 /* Generic AT76C503/3861 device */
132 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
133 /* Linksys WUSB11 v2.1/v2.6 */
134 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
135 /* Netgear MA101 rev. A */
136 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
137 /* Tekram U300C / Allnet ALL0193 */
138 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
139 /* HP HN210W J7801A */
140 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
141 /* Sitecom/Z-Com/Zyxel M4Y-750 */
142 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
143 /* Dynalink/Askey WLL013 (intersil) */
144 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
145 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
146 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
147 /* BenQ AWL300 */
148 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
149 /* Addtron AWU-120, Compex WLU11 */
150 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
151 /* Intel AP310 AnyPoint II USB */
152 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
153 /* Dynalink L11U */
154 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
155 /* Arescom WL-210, FCC id 07J-GL2411USB */
156 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
157 /* I-O DATA WN-B11/USB */
158 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
159 /* BT Voyager 1010 */
160 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
161 /*
162 * at76c503-i3863
163 */
164 /* Generic AT76C503/3863 device */
165 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
166 /* Samsung SWL-2100U */
167 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
168 /*
169 * at76c503-rfmd
170 */
171 /* Generic AT76C503/RFMD device */
172 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
173 /* Dynalink/Askey WLL013 (rfmd) */
174 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
175 /* Linksys WUSB11 v2.6 */
176 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
177 /* Network Everywhere NWU11B */
178 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
179 /* Netgear MA101 rev. B */
180 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
181 /* D-Link DWL-120 rev. E */
182 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
183 /* Actiontec 802UAT1, HWU01150-01UK */
184 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
185 /* AirVast W-Buddie WN210 */
186 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
187 /* Dick Smith Electronics XH1153 802.11b USB adapter */
188 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
189 /* CNet CNUSB611 */
190 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
191 /* FiberLine FL-WL200U */
192 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
193 /* BenQ AWL400 USB stick */
194 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
195 /* 3Com 3CRSHEW696 */
196 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
197 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
198 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
199 /* Belkin F5D6050, version 2 */
200 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
201 /* iBlitzz, BWU613 (not *B or *SB) */
202 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
203 /* Gigabyte GN-WLBM101 */
204 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
205 /* Planex GW-US11S */
206 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
207 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
208 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
209 /* Corega Wireless LAN USB-11 mini */
210 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
211 /* Corega Wireless LAN USB-11 mini2 */
212 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
213 /* Uniden PCW100 */
214 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
215 /*
216 * at76c503-rfmd-acc
217 */
218 /* SMC2664W */
219 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
220 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
221 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
222 /*
223 * at76c505-rfmd
224 */
225 /* Generic AT76C505/RFMD */
226 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
227 /*
228 * at76c505-rfmd2958
229 */
230 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
231 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
232 /* Fiberline FL-WL240U */
233 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
234 /* CNet CNUSB-611G */
235 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
236 /* Linksys WUSB11 v2.8 */
237 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
238 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
239 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
240 /* Corega WLAN USB Stick 11 */
241 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
242 /* Microstar MSI Box MS6978 */
243 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
244 /*
245 * at76c505a-rfmd2958
246 */
247 /* Generic AT76C505A device */
248 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
249 /* Generic AT76C505AS device */
250 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
251 /* Siemens Gigaset USB WLAN Adapter 11 */
252 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
253 /*
254 * at76c505amx-rfmd
255 */
256 /* Generic AT76C505AMX device */
257 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
258 { }
259};
260
261MODULE_DEVICE_TABLE(usb, dev_table);
262
263/* Supported rates of this hardware, bit 7 marks basic rates */
264static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
265
266static const char *const preambles[] = { "long", "short", "auto" };
267
268/* Firmware download */
269/* DFU states */
270#define STATE_IDLE 0x00
271#define STATE_DETACH 0x01
272#define STATE_DFU_IDLE 0x02
273#define STATE_DFU_DOWNLOAD_SYNC 0x03
274#define STATE_DFU_DOWNLOAD_BUSY 0x04
275#define STATE_DFU_DOWNLOAD_IDLE 0x05
276#define STATE_DFU_MANIFEST_SYNC 0x06
277#define STATE_DFU_MANIFEST 0x07
278#define STATE_DFU_MANIFEST_WAIT_RESET 0x08
279#define STATE_DFU_UPLOAD_IDLE 0x09
280#define STATE_DFU_ERROR 0x0a
281
282/* DFU commands */
283#define DFU_DETACH 0
284#define DFU_DNLOAD 1
285#define DFU_UPLOAD 2
286#define DFU_GETSTATUS 3
287#define DFU_CLRSTATUS 4
288#define DFU_GETSTATE 5
289#define DFU_ABORT 6
290
291#define FW_BLOCK_SIZE 1024
292
293struct dfu_status {
294 unsigned char status;
295 unsigned char poll_timeout[3];
296 unsigned char state;
297 unsigned char string;
298} __attribute__((packed));
299
300static inline int at76_is_intersil(enum board_type board)
301{
302 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
303}
304
305static inline int at76_is_503rfmd(enum board_type board)
306{
307 return (board == BOARD_503 || board == BOARD_503_ACC);
308}
309
310static inline int at76_is_505a(enum board_type board)
311{
312 return (board == BOARD_505A || board == BOARD_505AMX);
313}
314
315/* Load a block of the first (internal) part of the firmware */
316static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
317 void *block, int size)
318{
319 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
320 USB_TYPE_CLASS | USB_DIR_OUT |
321 USB_RECIP_INTERFACE, blockno, 0, block, size,
322 USB_CTRL_GET_TIMEOUT);
323}
324
325static int at76_dfu_get_status(struct usb_device *udev,
326 struct dfu_status *status)
327{
328 int ret;
329
330 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
331 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
332 0, 0, status, sizeof(struct dfu_status),
333 USB_CTRL_GET_TIMEOUT);
334 return ret;
335}
336
337static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
338{
339 int ret;
340
341 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
342 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
343 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
344 return ret;
345}
346
347/* Convert timeout from the DFU status to jiffies */
348static inline unsigned long at76_get_timeout(struct dfu_status *s)
349{
350 return msecs_to_jiffies((s->poll_timeout[2] << 16)
351 | (s->poll_timeout[1] << 8)
352 | (s->poll_timeout[0]));
353}
354
355/* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
356 * its value in jiffies in the MANIFEST_SYNC state. */
357static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
358 int manifest_sync_timeout)
359{
360 u8 *block;
361 struct dfu_status dfu_stat_buf;
362 int ret = 0;
363 int need_dfu_state = 1;
364 int is_done = 0;
365 u8 dfu_state = 0;
366 u32 dfu_timeout = 0;
367 int bsize = 0;
368 int blockno = 0;
369
370 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
371 manifest_sync_timeout);
372
373 if (!size) {
374 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
375 return -EINVAL;
376 }
377
378 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
379 if (!block)
380 return -ENOMEM;
381
382 do {
383 if (need_dfu_state) {
384 ret = at76_dfu_get_state(udev, &dfu_state);
385 if (ret < 0) {
386 dev_printk(KERN_ERR, &udev->dev,
387 "cannot get DFU state: %d\n", ret);
388 goto exit;
389 }
390 need_dfu_state = 0;
391 }
392
393 switch (dfu_state) {
394 case STATE_DFU_DOWNLOAD_SYNC:
395 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
396 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
397 if (ret >= 0) {
398 dfu_state = dfu_stat_buf.state;
399 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
400 need_dfu_state = 0;
401 } else
402 dev_printk(KERN_ERR, &udev->dev,
403 "at76_dfu_get_status returned %d\n",
404 ret);
405 break;
406
407 case STATE_DFU_DOWNLOAD_BUSY:
408 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
409 need_dfu_state = 1;
410
411 at76_dbg(DBG_DFU, "DFU: Resetting device");
412 schedule_timeout_interruptible(dfu_timeout);
413 break;
414
415 case STATE_DFU_DOWNLOAD_IDLE:
416 at76_dbg(DBG_DFU, "DOWNLOAD...");
417 /* fall through */
418 case STATE_DFU_IDLE:
419 at76_dbg(DBG_DFU, "DFU IDLE");
420
421 bsize = min_t(int, size, FW_BLOCK_SIZE);
422 memcpy(block, buf, bsize);
423 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
424 "bsize = %4d, blockno = %2d", size, bsize,
425 blockno);
426 ret =
427 at76_load_int_fw_block(udev, blockno, block, bsize);
428 buf += bsize;
429 size -= bsize;
430 blockno++;
431
432 if (ret != bsize)
433 dev_printk(KERN_ERR, &udev->dev,
434 "at76_load_int_fw_block "
435 "returned %d\n", ret);
436 need_dfu_state = 1;
437 break;
438
439 case STATE_DFU_MANIFEST_SYNC:
440 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
441
442 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
443 if (ret < 0)
444 break;
445
446 dfu_state = dfu_stat_buf.state;
447 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
448 need_dfu_state = 0;
449
450 /* override the timeout from the status response,
451 needed for AT76C505A */
452 if (manifest_sync_timeout > 0)
453 dfu_timeout = manifest_sync_timeout;
454
455 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
456 schedule_timeout_interruptible(dfu_timeout);
457 break;
458
459 case STATE_DFU_MANIFEST:
460 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
461 is_done = 1;
462 break;
463
464 case STATE_DFU_MANIFEST_WAIT_RESET:
465 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
466 is_done = 1;
467 break;
468
469 case STATE_DFU_UPLOAD_IDLE:
470 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
471 break;
472
473 case STATE_DFU_ERROR:
474 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
475 ret = -EPIPE;
476 break;
477
478 default:
479 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
480 ret = -EINVAL;
481 break;
482 }
483 } while (!is_done && (ret >= 0));
484
485exit:
486 kfree(block);
487 if (ret >= 0)
488 ret = 0;
489
490 return ret;
491}
492
493#define HEX2STR_BUFFERS 4
494#define HEX2STR_MAX_LEN 64
495#define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
496
497/* Convert binary data into hex string */
498static char *hex2str(void *buf, int len)
499{
500 static atomic_t a = ATOMIC_INIT(0);
501 static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
502 char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
503 char *obuf = ret;
504 u8 *ibuf = buf;
505
506 if (len > HEX2STR_MAX_LEN)
507 len = HEX2STR_MAX_LEN;
508
509 if (len <= 0) {
510 ret[0] = '\0';
511 return ret;
512 }
513
514 while (len--) {
515 *obuf++ = BIN2HEX(*ibuf >> 4);
516 *obuf++ = BIN2HEX(*ibuf & 0xf);
517 *obuf++ = '-';
518 ibuf++;
519 }
520 *(--obuf) = '\0';
521
522 return ret;
523}
524
525#define MAC2STR_BUFFERS 4
526
527static inline char *mac2str(u8 *mac)
528{
529 static atomic_t a = ATOMIC_INIT(0);
530 static char bufs[MAC2STR_BUFFERS][6 * 3];
531 char *str;
532
533 str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)];
534 sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
535 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
536 return str;
537}
538
539/* LED trigger */
540static int tx_activity;
541static void at76_ledtrig_tx_timerfunc(unsigned long data);
542static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
543DEFINE_LED_TRIGGER(ledtrig_tx);
544
545static void at76_ledtrig_tx_timerfunc(unsigned long data)
546{
547 static int tx_lastactivity;
548
549 if (tx_lastactivity != tx_activity) {
550 tx_lastactivity = tx_activity;
551 led_trigger_event(ledtrig_tx, LED_FULL);
552 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
553 } else
554 led_trigger_event(ledtrig_tx, LED_OFF);
555}
556
557static void at76_ledtrig_tx_activity(void)
558{
559 tx_activity++;
560 if (!timer_pending(&ledtrig_tx_timer))
561 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
562}
563
564static int at76_remap(struct usb_device *udev)
565{
566 int ret;
567 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
568 USB_TYPE_VENDOR | USB_DIR_OUT |
569 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
570 USB_CTRL_GET_TIMEOUT);
571 if (ret < 0)
572 return ret;
573 return 0;
574}
575
576static int at76_get_op_mode(struct usb_device *udev)
577{
578 int ret;
5a2137dd
JA		 579 u8 saved;
580 u8 *op_mode;
1264b951 581
5a2137dd
JA		 582 op_mode = kmalloc(1, GFP_NOIO);
583 if (!op_mode)
584 return -ENOMEM;
1264b951
KV		 585 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
586 USB_TYPE_VENDOR | USB_DIR_IN |
5a2137dd 587 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
1264b951 588 USB_CTRL_GET_TIMEOUT);
5a2137dd
JA		 589 saved = *op_mode;
590 kfree(op_mode);
591
1264b951
KV		 592 if (ret < 0)
593 return ret;
594 else if (ret < 1)
595 return -EIO;
596 else
5a2137dd 597 return saved;
1264b951
KV		 598}
599
600/* Load a block of the second ("external") part of the firmware */
601static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
602 void *block, int size)
603{
604 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
605 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
606 0x0802, blockno, block, size,
607 USB_CTRL_GET_TIMEOUT);
608}
609
610static inline int at76_get_hw_cfg(struct usb_device *udev,
611 union at76_hwcfg *buf, int buf_size)
612{
613 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
614 USB_TYPE_VENDOR | USB_DIR_IN |
615 USB_RECIP_INTERFACE, 0x0a02, 0,
616 buf, buf_size, USB_CTRL_GET_TIMEOUT);
617}
618
619/* Intersil boards use a different "value" for GetHWConfig requests */
620static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
621 union at76_hwcfg *buf, int buf_size)
622{
623 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
624 USB_TYPE_VENDOR | USB_DIR_IN |
625 USB_RECIP_INTERFACE, 0x0902, 0,
626 buf, buf_size, USB_CTRL_GET_TIMEOUT);
627}
628
629/* Get the hardware configuration for the adapter and put it to the appropriate
630 * fields of 'priv' (the GetHWConfig request and interpretation of the result
631 * depends on the board type) */
632static int at76_get_hw_config(struct at76_priv *priv)
633{
634 int ret;
635 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
636
637 if (!hwcfg)
638 return -ENOMEM;
639
640 if (at76_is_intersil(priv->board_type)) {
641 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
642 sizeof(hwcfg->i));
643 if (ret < 0)
644 goto exit;
645 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
646 priv->regulatory_domain = hwcfg->i.regulatory_domain;
647 } else if (at76_is_503rfmd(priv->board_type)) {
648 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
649 if (ret < 0)
650 goto exit;
651 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
652 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
653 } else {
654 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
655 if (ret < 0)
656 goto exit;
657 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
658 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
659 }
660
661exit:
662 kfree(hwcfg);
663 if (ret < 0)
664 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
665 wiphy_name(priv->hw->wiphy), ret);
666
667 return ret;
668}
669
670static struct reg_domain const *at76_get_reg_domain(u16 code)
671{
672 int i;
673 static struct reg_domain const fd_tab[] = {
674 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */
675 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
676 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */
677 { 0x31, "Spain", 0x600 }, /* ch 10-11 */
678 { 0x32, "France", 0x1e00 }, /* ch 10-13 */
679 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */
680 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */
681 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */
682 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */
683 };
684
685 /* Last entry is fallback for unknown domain code */
686 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
687 if (code == fd_tab[i].code)
688 break;
689
690 return &fd_tab[i];
691}
692
693static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
694 int buf_size)
695{
696 int ret;
697
698 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
699 USB_TYPE_VENDOR | USB_DIR_IN |
700 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
701 USB_CTRL_GET_TIMEOUT);
702 if (ret >= 0 && ret != buf_size)
703 return -EIO;
704 return ret;
705}
706
707/* Return positive number for status, negative for an error */
708static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
709{
5a2137dd 710 u8 *stat_buf;
1264b951
KV		 711 int ret;
712
5a2137dd
JA		 713 stat_buf = kmalloc(40, GFP_NOIO);
714 if (!stat_buf)
715 return -ENOMEM;
716
1264b951 717 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
5a2137dd
JA		 718 USB_TYPE_VENDOR | USB_DIR_IN |
719 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
720 40, USB_CTRL_GET_TIMEOUT);
721 if (ret >= 0)
722 ret = stat_buf[5];
723 kfree(stat_buf);
1264b951 724
5a2137dd 725 return ret;
1264b951
KV		 726}
727
728#define MAKE_CMD_CASE(c) case (c): return #c
1264b951
KV		 729static const char *at76_get_cmd_string(u8 cmd_status)
730{
731 switch (cmd_status) {
732 MAKE_CMD_CASE(CMD_SET_MIB);
733 MAKE_CMD_CASE(CMD_GET_MIB);
734 MAKE_CMD_CASE(CMD_SCAN);
735 MAKE_CMD_CASE(CMD_JOIN);
736 MAKE_CMD_CASE(CMD_START_IBSS);
737 MAKE_CMD_CASE(CMD_RADIO_ON);
738 MAKE_CMD_CASE(CMD_RADIO_OFF);
739 MAKE_CMD_CASE(CMD_STARTUP);
740 }
741
742 return "UNKNOWN";
743}
744
5a2137dd 745static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
1264b951
KV		 746 int buf_size)
747{
748 int ret;
749 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
750 buf_size, GFP_KERNEL);
751
752 if (!cmd_buf)
753 return -ENOMEM;
754
755 cmd_buf->cmd = cmd;
756 cmd_buf->reserved = 0;
757 cmd_buf->size = cpu_to_le16(buf_size);
758 memcpy(cmd_buf->data, buf, buf_size);
759
760 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
761 "issuing command %s (0x%02x)",
762 at76_get_cmd_string(cmd), cmd);
763
764 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
765 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
766 0, 0, cmd_buf,
767 sizeof(struct at76_command) + buf_size,
768 USB_CTRL_GET_TIMEOUT);
769 kfree(cmd_buf);
770 return ret;
771}
772
773#define MAKE_CMD_STATUS_CASE(c) case (c): return #c
774static const char *at76_get_cmd_status_string(u8 cmd_status)
775{
776 switch (cmd_status) {
777 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
778 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
779 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
780 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
781 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
782 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
783 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
784 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
785 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
786 }
787
788 return "UNKNOWN";
789}
790
791/* Wait until the command is completed */
792static int at76_wait_completion(struct at76_priv *priv, int cmd)
793{
794 int status = 0;
795 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
796
797 do {
798 status = at76_get_cmd_status(priv->udev, cmd);
799 if (status < 0) {
800 printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
801 wiphy_name(priv->hw->wiphy), status);
802 break;
803 }
804
805 at76_dbg(DBG_WAIT_COMPLETE,
806 "%s: Waiting on cmd %d, status = %d (%s)",
807 wiphy_name(priv->hw->wiphy), cmd, status,
808 at76_get_cmd_status_string(status));
809
810 if (status != CMD_STATUS_IN_PROGRESS
811 && status != CMD_STATUS_IDLE)
812 break;
813
814 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
815 if (time_after(jiffies, timeout)) {
816 printk(KERN_ERR
817 "%s: completion timeout for command %d\n",
818 wiphy_name(priv->hw->wiphy), cmd);
819 status = -ETIMEDOUT;
820 break;
821 }
822 } while (1);
823
824 return status;
825}
826
827static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
828{
829 int ret;
830
831 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
832 offsetof(struct set_mib_buffer,
833 data) + buf->size);
834 if (ret < 0)
835 return ret;
836
837 ret = at76_wait_completion(priv, CMD_SET_MIB);
838 if (ret != CMD_STATUS_COMPLETE) {
839 printk(KERN_INFO
840 "%s: set_mib: at76_wait_completion failed "
841 "with %d\n", wiphy_name(priv->hw->wiphy), ret);
842 ret = -EIO;
843 }
844
845 return ret;
846}
847
848/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
849static int at76_set_radio(struct at76_priv *priv, int enable)
850{
851 int ret;
852 int cmd;
853
854 if (priv->radio_on == enable)
855 return 0;
856
857 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
858
859 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
860 if (ret < 0)
861 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
862 wiphy_name(priv->hw->wiphy), cmd, ret);
863 else
864 ret = 1;
865
866 priv->radio_on = enable;
867 return ret;
868}
869
870/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
871static int at76_set_pm_mode(struct at76_priv *priv)
872{
873 int ret = 0;
874
875 priv->mib_buf.type = MIB_MAC_MGMT;
876 priv->mib_buf.size = 1;
877 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
878 priv->mib_buf.data.byte = priv->pm_mode;
879
880 ret = at76_set_mib(priv, &priv->mib_buf);
881 if (ret < 0)
882 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
883 wiphy_name(priv->hw->wiphy), ret);
884
885 return ret;
886}
887
888static int at76_set_preamble(struct at76_priv *priv, u8 type)
889{
890 int ret = 0;
891
892 priv->mib_buf.type = MIB_LOCAL;
893 priv->mib_buf.size = 1;
894 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
895 priv->mib_buf.data.byte = type;
896
897 ret = at76_set_mib(priv, &priv->mib_buf);
898 if (ret < 0)
899 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
900 wiphy_name(priv->hw->wiphy), ret);
901
902 return ret;
903}
904
905static int at76_set_frag(struct at76_priv *priv, u16 size)
906{
907 int ret = 0;
908
909 priv->mib_buf.type = MIB_MAC;
910 priv->mib_buf.size = 2;
911 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
912 priv->mib_buf.data.word = cpu_to_le16(size);
913
914 ret = at76_set_mib(priv, &priv->mib_buf);
915 if (ret < 0)
916 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
917 wiphy_name(priv->hw->wiphy), ret);
918
919 return ret;
920}
921
922static int at76_set_rts(struct at76_priv *priv, u16 size)
923{
924 int ret = 0;
925
926 priv->mib_buf.type = MIB_MAC;
927 priv->mib_buf.size = 2;
928 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
929 priv->mib_buf.data.word = cpu_to_le16(size);
930
931 ret = at76_set_mib(priv, &priv->mib_buf);
932 if (ret < 0)
933 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
934 wiphy_name(priv->hw->wiphy), ret);
935
936 return ret;
937}
938
939static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
940{
941 int ret = 0;
942
943 priv->mib_buf.type = MIB_LOCAL;
944 priv->mib_buf.size = 1;
945 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
946 priv->mib_buf.data.byte = onoff;
947
948 ret = at76_set_mib(priv, &priv->mib_buf);
949 if (ret < 0)
950 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
951 wiphy_name(priv->hw->wiphy), ret);
952
953 return ret;
954}
955
956static void at76_dump_mib_mac_addr(struct at76_priv *priv)
957{
958 int i;
959 int ret;
960 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
961 GFP_KERNEL);
962
963 if (!m)
964 return;
965
966 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
967 sizeof(struct mib_mac_addr));
968 if (ret < 0) {
969 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
970 wiphy_name(priv->hw->wiphy), ret);
971 goto exit;
972 }
973
974 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %s res 0x%x 0x%x",
975 wiphy_name(priv->hw->wiphy),
976 mac2str(m->mac_addr), m->res[0], m->res[1]);
977 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
978 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %s, "
979 "status %d", wiphy_name(priv->hw->wiphy), i,
980 mac2str(m->group_addr[i]), m->group_addr_status[i]);
981exit:
982 kfree(m);
983}
984
985static void at76_dump_mib_mac_wep(struct at76_priv *priv)
986{
987 int i;
988 int ret;
989 int key_len;
990 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
991
992 if (!m)
993 return;
994
995 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
996 sizeof(struct mib_mac_wep));
997 if (ret < 0) {
998 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
999 wiphy_name(priv->hw->wiphy), ret);
1000 goto exit;
1001 }
1002
1003 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1004 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1005 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
1006 m->privacy_invoked, m->wep_default_key_id,
1007 m->wep_key_mapping_len, m->exclude_unencrypted,
1008 le32_to_cpu(m->wep_icv_error_count),
1009 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1010 m->wep_default_key_id);
1011
1012 key_len = (m->encryption_level == 1) ?
1013 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1014
1015 for (i = 0; i < WEP_KEYS; i++)
1016 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1017 wiphy_name(priv->hw->wiphy), i,
1018 hex2str(m->wep_default_keyvalue[i], key_len));
1019exit:
1020 kfree(m);
1021}
1022
1023static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1024{
1025 int ret;
1026 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1027 GFP_KERNEL);
1028
1029 if (!m)
1030 return;
1031
1032 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1033 sizeof(struct mib_mac_mgmt));
1034 if (ret < 0) {
1035 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1036 wiphy_name(priv->hw->wiphy), ret);
1037 goto exit;
1038 }
1039
1040 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1041 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1042 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1043 "current_bssid %s current_essid %s current_bss_type %d "
1044 "pm_mode %d ibss_change %d res %d "
1045 "multi_domain_capability_implemented %d "
1046 "international_roaming %d country_string %.3s",
1047 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1048 le16_to_cpu(m->CFP_max_duration),
1049 le16_to_cpu(m->medium_occupancy_limit),
1050 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1051 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1052 m->CFP_period, mac2str(m->current_bssid),
1053 hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1054 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1055 m->res, m->multi_domain_capability_implemented,
1056 m->multi_domain_capability_enabled, m->country_string);
1057exit:
1058 kfree(m);
1059}
1060
1061static void at76_dump_mib_mac(struct at76_priv *priv)
1062{
1063 int ret;
1064 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1065
1066 if (!m)
1067 return;
1068
1069 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1070 if (ret < 0) {
1071 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1072 wiphy_name(priv->hw->wiphy), ret);
1073 goto exit;
1074 }
1075
1076 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1077 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1078 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1079 "scan_type %d scan_channel %d probe_delay %u "
1080 "min_channel_time %d max_channel_time %d listen_int %d "
1081 "desired_ssid %s desired_bssid %s desired_bsstype %d",
1082 wiphy_name(priv->hw->wiphy),
1083 le32_to_cpu(m->max_tx_msdu_lifetime),
1084 le32_to_cpu(m->max_rx_lifetime),
1085 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1086 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1087 m->short_retry_time, m->long_retry_time, m->scan_type,
1088 m->scan_channel, le16_to_cpu(m->probe_delay),
1089 le16_to_cpu(m->min_channel_time),
1090 le16_to_cpu(m->max_channel_time),
1091 le16_to_cpu(m->listen_interval),
1092 hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1093 mac2str(m->desired_bssid), m->desired_bsstype);
1094exit:
1095 kfree(m);
1096}
1097
1098static void at76_dump_mib_phy(struct at76_priv *priv)
1099{
1100 int ret;
1101 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1102
1103 if (!m)
1104 return;
1105
1106 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1107 if (ret < 0) {
1108 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1109 wiphy_name(priv->hw->wiphy), ret);
1110 goto exit;
1111 }
1112
1113 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1114 "sifs_time %d preamble_length %d plcp_header_length %d "
1115 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1116 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1117 "phy_type %d current_reg_domain %d",
1118 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1119 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1120 le16_to_cpu(m->preamble_length),
1121 le16_to_cpu(m->plcp_header_length),
1122 le16_to_cpu(m->mpdu_max_length),
1123 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1124 m->operation_rate_set[1], m->operation_rate_set[2],
1125 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1126 m->phy_type, m->current_reg_domain);
1127exit:
1128 kfree(m);
1129}
1130
1131static void at76_dump_mib_local(struct at76_priv *priv)
1132{
1133 int ret;
1134 struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1135
1136 if (!m)
1137 return;
1138
1139 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1140 if (ret < 0) {
1141 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1142 wiphy_name(priv->hw->wiphy), ret);
1143 goto exit;
1144 }
1145
1146 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1147 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1148 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1149 m->beacon_enable,
1150 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1151 m->preamble_type);
1152exit:
1153 kfree(m);
1154}
1155
1156static void at76_dump_mib_mdomain(struct at76_priv *priv)
1157{
1158 int ret;
1159 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1160
1161 if (!m)
1162 return;
1163
1164 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1165 sizeof(struct mib_mdomain));
1166 if (ret < 0) {
1167 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1168 wiphy_name(priv->hw->wiphy), ret);
1169 goto exit;
1170 }
1171
1172 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1173 wiphy_name(priv->hw->wiphy),
1174 hex2str(m->channel_list, sizeof(m->channel_list)));
1175
1176 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1177 wiphy_name(priv->hw->wiphy),
1178 hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1179exit:
1180 kfree(m);
1181}
1182
1183/* Enable monitor mode */
1184static int at76_start_monitor(struct at76_priv *priv)
1185{
1186 struct at76_req_scan scan;
1187 int ret;
1188
1189 memset(&scan, 0, sizeof(struct at76_req_scan));
1190 memset(scan.bssid, 0xff, ETH_ALEN);
1191
1192 scan.channel = priv->channel;
1193 scan.scan_type = SCAN_TYPE_PASSIVE;
1194 scan.international_scan = 0;
1195
1196 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1197 if (ret >= 0)
1198 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1199
1200 return ret;
1201}
1202
1203/* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1204 likely to compensate a flaw in the AT76C503A USB part ... */
1205static inline int at76_calc_padding(int wlen)
1206{
1207 /* add the USB TX header */
1208 wlen += AT76_TX_HDRLEN;
1209
1210 wlen = wlen % 64;
1211
1212 if (wlen < 50)
1213 return 50 - wlen;
1214
1215 if (wlen >= 61)
1216 return 64 + 50 - wlen;
1217
1218 return 0;
1219}
1220
1221static void at76_rx_callback(struct urb *urb)
1222{
1223 struct at76_priv *priv = urb->context;
1224
1225 priv->rx_tasklet.data = (unsigned long)urb;
1226 tasklet_schedule(&priv->rx_tasklet);
1227 return;
1228}
1229
1230static int at76_submit_rx_urb(struct at76_priv *priv)
1231{
1232 int ret;
1233 int size;
1234 struct sk_buff *skb = priv->rx_skb;
1235
1236 if (!priv->rx_urb) {
1237 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
1238 wiphy_name(priv->hw->wiphy), __func__);
1239 return -EFAULT;
1240 }
1241
1242 if (!skb) {
1243 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1244 if (!skb) {
1245 printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
1246 wiphy_name(priv->hw->wiphy));
1247 ret = -ENOMEM;
1248 goto exit;
1249 }
1250 priv->rx_skb = skb;
1251 } else {
1252 skb_push(skb, skb_headroom(skb));
1253 skb_trim(skb, 0);
1254 }
1255
1256 size = skb_tailroom(skb);
1257 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1258 skb_put(skb, size), size, at76_rx_callback, priv);
1259 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1260 if (ret < 0) {
1261 if (ret == -ENODEV)
1262 at76_dbg(DBG_DEVSTART,
1263 "usb_submit_urb returned -ENODEV");
1264 else
1265 printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
1266 wiphy_name(priv->hw->wiphy), ret);
1267 }
1268
1269exit:
1270 if (ret < 0 && ret != -ENODEV)
1271 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
1272 "driver and/or power cycle the device\n",
1273 wiphy_name(priv->hw->wiphy));
1274
1275 return ret;
1276}
1277
1278/* Download external firmware */
1279static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1280{
1281 int ret;
1282 int op_mode;
1283 int blockno = 0;
1284 int bsize;
1285 u8 *block;
1286 u8 *buf = fwe->extfw;
1287 int size = fwe->extfw_size;
1288
1289 if (!buf || !size)
1290 return -ENOENT;
1291
1292 op_mode = at76_get_op_mode(udev);
1293 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1294
1295 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1296 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1297 op_mode);
1298 return -EINVAL;
1299 }
1300
1301 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1302 if (!block)
1303 return -ENOMEM;
1304
1305 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1306
1307 /* for fw >= 0.100, the device needs an extra empty block */
1308 do {
1309 bsize = min_t(int, size, FW_BLOCK_SIZE);
1310 memcpy(block, buf, bsize);
1311 at76_dbg(DBG_DEVSTART,
1312 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1313 size, bsize, blockno);
1314 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1315 if (ret != bsize) {
1316 dev_printk(KERN_ERR, &udev->dev,
1317 "loading %dth firmware block failed: %d\n",
1318 blockno, ret);
1319 goto exit;
1320 }
1321 buf += bsize;
1322 size -= bsize;
1323 blockno++;
1324 } while (bsize > 0);
1325
1326 if (at76_is_505a(fwe->board_type)) {
1327 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1328 schedule_timeout_interruptible(HZ / 5 + 1);
1329 }
1330
1331exit:
1332 kfree(block);
1333 if (ret < 0)
1334 dev_printk(KERN_ERR, &udev->dev,
1335 "downloading external firmware failed: %d\n", ret);
1336 return ret;
1337}
1338
1339/* Download internal firmware */
1340static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1341{
1342 int ret;
1343 int need_remap = !at76_is_505a(fwe->board_type);
1344
1345 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1346 need_remap ? 0 : 2 * HZ);
1347
1348 if (ret < 0) {
1349 dev_printk(KERN_ERR, &udev->dev,
1350 "downloading internal fw failed with %d\n", ret);
1351 goto exit;
1352 }
1353
1354 at76_dbg(DBG_DEVSTART, "sending REMAP");
1355
1356 /* no REMAP for 505A (see SF driver) */
1357 if (need_remap) {
1358 ret = at76_remap(udev);
1359 if (ret < 0) {
1360 dev_printk(KERN_ERR, &udev->dev,
1361 "sending REMAP failed with %d\n", ret);
1362 goto exit;
1363 }
1364 }
1365
1366 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1367 schedule_timeout_interruptible(2 * HZ + 1);
1368 usb_reset_device(udev);
1369
1370exit:
1371 return ret;
1372}
1373
1374static int at76_startup_device(struct at76_priv *priv)
1375{
1376 struct at76_card_config *ccfg = &priv->card_config;
1377 int ret;
1378
1379 at76_dbg(DBG_PARAMS,
1380 "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1381 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1382 priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1383 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1384 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1385 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1386 at76_dbg(DBG_PARAMS,
1387 "%s param: preamble %s rts %d retry %d frag %d "
1388 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1389 preambles[priv->preamble_type], priv->rts_threshold,
1390 priv->short_retry_limit, priv->frag_threshold,
1391 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1392 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1393 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1394 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1395 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1396 at76_dbg(DBG_PARAMS,
1397 "%s param: pm_mode %d pm_period %d auth_mode %s "
1398 "scan_times %d %d scan_mode %s",
1399 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1400 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1401 priv->scan_min_time, priv->scan_max_time,
1402 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1403
1404 memset(ccfg, 0, sizeof(struct at76_card_config));
1405 ccfg->promiscuous_mode = 0;
1406 ccfg->short_retry_limit = priv->short_retry_limit;
1407
1408 if (priv->wep_enabled) {
1409 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1410 ccfg->encryption_type = 2;
1411 else
1412 ccfg->encryption_type = 1;
1413
1414 /* jal: always exclude unencrypted if WEP is active */
1415 ccfg->exclude_unencrypted = 1;
1416 } else {
1417 ccfg->exclude_unencrypted = 0;
1418 ccfg->encryption_type = 0;
1419 }
1420
1421 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1422 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1423
1424 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1425 /* jal: really needed, we do a set_mib for autorate later ??? */
1426 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1427 ccfg->channel = priv->channel;
1428 ccfg->privacy_invoked = priv->wep_enabled;
1429 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1430 ccfg->ssid_len = priv->essid_size;
1431
1432 ccfg->wep_default_key_id = priv->wep_key_id;
1433 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1434 sizeof(priv->wep_keys));
1435
1436 ccfg->short_preamble = priv->preamble_type;
1437 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1438
1439 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1440 sizeof(struct at76_card_config));
1441 if (ret < 0) {
1442 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1443 wiphy_name(priv->hw->wiphy), ret);
1444 return ret;
1445 }
1446
1447 at76_wait_completion(priv, CMD_STARTUP);
1448
1449 /* remove BSSID from previous run */
1450 memset(priv->bssid, 0, ETH_ALEN);
1451
1452 if (at76_set_radio(priv, 1) == 1)
1453 at76_wait_completion(priv, CMD_RADIO_ON);
1454
1455 ret = at76_set_preamble(priv, priv->preamble_type);
1456 if (ret < 0)
1457 return ret;
1458
1459 ret = at76_set_frag(priv, priv->frag_threshold);
1460 if (ret < 0)
1461 return ret;
1462
1463 ret = at76_set_rts(priv, priv->rts_threshold);
1464 if (ret < 0)
1465 return ret;
1466
1467 ret = at76_set_autorate_fallback(priv,
1468 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1469 if (ret < 0)
1470 return ret;
1471
1472 ret = at76_set_pm_mode(priv);
1473 if (ret < 0)
1474 return ret;
1475
1476 if (at76_debug & DBG_MIB) {
1477 at76_dump_mib_mac(priv);
1478 at76_dump_mib_mac_addr(priv);
1479 at76_dump_mib_mac_mgmt(priv);
1480 at76_dump_mib_mac_wep(priv);
1481 at76_dump_mib_mdomain(priv);
1482 at76_dump_mib_phy(priv);
1483 at76_dump_mib_local(priv);
1484 }
1485
1486 return 0;
1487}
1488
1489/* Enable or disable promiscuous mode */
1490static void at76_work_set_promisc(struct work_struct *work)
1491{
1492 struct at76_priv *priv = container_of(work, struct at76_priv,
1493 work_set_promisc);
1494 int ret = 0;
1495
1cc198fe
JA		 1496 if (priv->device_unplugged)
1497 return;
1498
1264b951
KV		 1499 mutex_lock(&priv->mtx);
1500
1501 priv->mib_buf.type = MIB_LOCAL;
1502 priv->mib_buf.size = 1;
1503 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1504 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1505
1506 ret = at76_set_mib(priv, &priv->mib_buf);
1507 if (ret < 0)
1508 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
1509 wiphy_name(priv->hw->wiphy), ret);
1510
1511 mutex_unlock(&priv->mtx);
1512}
1513
1514/* Submit Rx urb back to the device */
1515static void at76_work_submit_rx(struct work_struct *work)
1516{
1517 struct at76_priv *priv = container_of(work, struct at76_priv,
1518 work_submit_rx);
1519
1520 mutex_lock(&priv->mtx);
1521 at76_submit_rx_urb(priv);
1522 mutex_unlock(&priv->mtx);
1523}
1524
1525static void at76_rx_tasklet(unsigned long param)
1526{
1527 struct urb *urb = (struct urb *)param;
1528 struct at76_priv *priv = urb->context;
1529 struct at76_rx_buffer *buf;
1530 struct ieee80211_rx_status rx_status = { 0 };
1531
1532 if (priv->device_unplugged) {
1533 at76_dbg(DBG_DEVSTART, "device unplugged");
1534 if (urb)
1535 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1536 return;
1537 }
1538
1539 if (!priv->rx_skb || !priv->rx_skb->data)
1540 return;
1541
1542 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1543
1544 if (urb->status != 0) {
1545 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1546 at76_dbg(DBG_URB,
1547 "%s %s: - nonzero Rx bulk status received: %d",
1548 __func__, wiphy_name(priv->hw->wiphy),
1549 urb->status);
1550 return;
1551 }
1552
1553 at76_dbg(DBG_RX_ATMEL_HDR,
1554 "%s: rx frame: rate %d rssi %d noise %d link %d",
1555 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1556 buf->noise_level, buf->link_quality);
1557
1558 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1559 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1560 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1561 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1562
1563 rx_status.signal = buf->rssi;
1564 rx_status.flag |= RX_FLAG_DECRYPTED;
1565 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1566
1567 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1568 priv->rx_skb->len, priv->rx_skb->data_len);
1569 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb, &rx_status);
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 */
1578static 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
1644exit:
1645 mutex_unlock(&fw_mutex);
1646
1647 if (fwe->loaded)
1648 return fwe;
1649 else
1650 return NULL;
1651}
1652
1653static 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
1685static 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
1741static 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
1761error:
1762 mutex_unlock(&priv->mtx);
1763
1764 return 0;
1765}
1766
1767static 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 mutex_lock(&priv->mtx);
1774
1775 if (!priv->device_unplugged) {
1776 /* We are called by "ifconfig ethX down", not because the
1777 * device is not available anymore. */
1778 at76_set_radio(priv, 0);
1779
1780 /* We unlink rx_urb because at76_open() re-submits it.
1781 * If unplugged, at76_delete_device() takes care of it. */
1782 usb_kill_urb(priv->rx_urb);
1783 }
1784
1785 mutex_unlock(&priv->mtx);
1786}
1787
1788static int at76_add_interface(struct ieee80211_hw *hw,
1789 struct ieee80211_if_init_conf *conf)
1790{
1791 struct at76_priv *priv = hw->priv;
1792 int ret = 0;
1793
1794 at76_dbg(DBG_MAC80211, "%s()", __func__);
1795
1796 mutex_lock(&priv->mtx);
1797
1798 switch (conf->type) {
1799 case NL80211_IFTYPE_STATION:
1800 priv->iw_mode = IW_MODE_INFRA;
1801 break;
1802 default:
1803 ret = -EOPNOTSUPP;
1804 goto exit;
1805 }
1806
1807exit:
1808 mutex_unlock(&priv->mtx);
1809
1810 return ret;
1811}
1812
1813static void at76_remove_interface(struct ieee80211_hw *hw,
1814 struct ieee80211_if_init_conf *conf)
1815{
1816 at76_dbg(DBG_MAC80211, "%s()", __func__);
1817}
1818
1819static int at76_join(struct at76_priv *priv)
1820{
1821 struct at76_req_join join;
1822 int ret;
1823
1824 memset(&join, 0, sizeof(struct at76_req_join));
1825 memcpy(join.essid, priv->essid, priv->essid_size);
1826 join.essid_size = priv->essid_size;
1827 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1828 join.bss_type = INFRASTRUCTURE_MODE;
1829 join.channel = priv->channel;
1830 join.timeout = cpu_to_le16(2000);
1831
1832 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1833 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1834 sizeof(struct at76_req_join));
1835
1836 if (ret < 0) {
1837 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1838 wiphy_name(priv->hw->wiphy), ret);
1839 return 0;
1840 }
1841
1842 ret = at76_wait_completion(priv, CMD_JOIN);
1843 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1844 if (ret != CMD_STATUS_COMPLETE) {
1845 printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
1846 wiphy_name(priv->hw->wiphy), ret);
1847 return 0;
1848 }
1849
1850 at76_set_pm_mode(priv);
1851
1852 return 0;
1853}
1854
1855static void at76_dwork_hw_scan(struct work_struct *work)
1856{
1857 struct at76_priv *priv = container_of(work, struct at76_priv,
1858 dwork_hw_scan.work);
1859 int ret;
1860
deda862e
JA		 1861 if (priv->device_unplugged)
1862 return;
1863
1264b951
KV		 1864 mutex_lock(&priv->mtx);
1865
1866 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1867 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1868
1869 /* FIXME: add maximum time for scan to complete */
1870
1871 if (ret != CMD_STATUS_COMPLETE) {
1872 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
1873 SCAN_POLL_INTERVAL);
1874 goto exit;
1875 }
1876
19e8bc7f 1877 ieee80211_scan_completed(priv->hw, false);
1264b951
KV		 1878
1879 if (is_valid_ether_addr(priv->bssid))
1880 at76_join(priv);
1881
1882 ieee80211_wake_queues(priv->hw);
1883
1884exit:
1885 mutex_unlock(&priv->mtx);
1886}
1887
19e8bc7f
JA		 1888static int at76_hw_scan(struct ieee80211_hw *hw,
1889 struct cfg80211_scan_request *req)
1264b951
KV		 1890{
1891 struct at76_priv *priv = hw->priv;
1892 struct at76_req_scan scan;
19e8bc7f
JA		 1893 u8 *ssid = NULL;
1894 int ret, len = 0;
1264b951
KV		 1895
1896 at76_dbg(DBG_MAC80211, "%s():", __func__);
1264b951 1897
deda862e
JA		 1898 if (priv->device_unplugged)
1899 return 0;
1900
1264b951
KV		 1901 mutex_lock(&priv->mtx);
1902
1903 ieee80211_stop_queues(hw);
1904
1905 memset(&scan, 0, sizeof(struct at76_req_scan));
1906 memset(scan.bssid, 0xFF, ETH_ALEN);
19e8bc7f
JA		 1907
1908 if (req->n_ssids) {
1909 scan.scan_type = SCAN_TYPE_ACTIVE;
1910 ssid = req->ssids[0].ssid;
1911 len = req->ssids[0].ssid_len;
1912 } else {
1913 scan.scan_type = SCAN_TYPE_PASSIVE;
1914 }
1915
1916 if (len) {
1264b951
KV		 1917 memcpy(scan.essid, ssid, len);
1918 scan.essid_size = len;
1919 }
19e8bc7f 1920
1264b951
KV		 1921 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1922 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1923 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1924 scan.international_scan = 0;
1925
1926 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1927 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1928
1929 if (ret < 0) {
1930 err("CMD_SCAN failed: %d", ret);
1931 goto exit;
1932 }
1933
1934 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
1935 SCAN_POLL_INTERVAL);
1936
1937exit:
1938 mutex_unlock(&priv->mtx);
1939
1940 return 0;
1941}
1942
1943static int at76_config(struct ieee80211_hw *hw, u32 changed)
1944{
1945 struct at76_priv *priv = hw->priv;
1946
1947 at76_dbg(DBG_MAC80211, "%s(): channel %d radio %d",
1948 __func__, hw->conf.channel->hw_value,
1949 hw->conf.radio_enabled);
1950 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1951
1952 mutex_lock(&priv->mtx);
1953
1954 priv->channel = hw->conf.channel->hw_value;
1955
1956 if (is_valid_ether_addr(priv->bssid))
1957 at76_join(priv);
1958 else
1959 at76_start_monitor(priv);
1960
1961 mutex_unlock(&priv->mtx);
1962
1963 return 0;
1964}
1965
1966static int at76_config_interface(struct ieee80211_hw *hw,
1967 struct ieee80211_vif *vif,
1968 struct ieee80211_if_conf *conf)
1969{
1970 struct at76_priv *priv = hw->priv;
1971
1972 at76_dbg(DBG_MAC80211, "%s():", __func__);
1973 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
1974
1975 mutex_lock(&priv->mtx);
1976
1977 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1978
1979 if (is_valid_ether_addr(priv->bssid))
1980 /* mac80211 is joining a bss */
1981 at76_join(priv);
1982
1983 mutex_unlock(&priv->mtx);
1984
1985 return 0;
1986}
1987
1988/* must be atomic */
1989static void at76_configure_filter(struct ieee80211_hw *hw,
1990 unsigned int changed_flags,
1991 unsigned int *total_flags, int mc_count,
1992 struct dev_addr_list *mc_list)
1993{
1994 struct at76_priv *priv = hw->priv;
1995 int flags;
1996
1997 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
1998 "total_flags=0x%08x mc_count=%d",
1999 __func__, changed_flags, *total_flags, mc_count);
2000
2001 flags = changed_flags & AT76_SUPPORTED_FILTERS;
2002 *total_flags = AT76_SUPPORTED_FILTERS;
2003
deda862e
JA		 2004 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2005 if (priv->device_unplugged)
2006 return;
2007
1264b951
KV		 2008 /* FIXME: access to priv->promisc should be protected with
2009 * priv->mtx, but it's impossible because this function needs to be
2010 * atomic */
2011
2012 if (flags && !priv->promisc) {
2013 /* mac80211 wants us to enable promiscuous mode */
2014 priv->promisc = 1;
2015 } else if (!flags && priv->promisc) {
2016 /* we need to disable promiscuous mode */
2017 priv->promisc = 0;
2018 } else
2019 return;
2020
2021 queue_work(hw->workqueue, &priv->work_set_promisc);
2022}
2023
2024static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2025 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2026 struct ieee80211_key_conf *key)
2027{
2028 struct at76_priv *priv = hw->priv;
2029
2030 int i;
2031
2032 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2033 "key->keylen %d",
2034 __func__, cmd, key->alg, key->keyidx, key->keylen);
2035
2036 if (key->alg != ALG_WEP)
2037 return -EOPNOTSUPP;
2038
2039 key->hw_key_idx = key->keyidx;
2040
2041 mutex_lock(&priv->mtx);
2042
2043 switch (cmd) {
2044 case SET_KEY:
2045 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2046 priv->wep_keys_len[key->keyidx] = key->keylen;
2047
2048 /* FIXME: find out how to do this properly */
2049 priv->wep_key_id = key->keyidx;
2050
2051 break;
2052 case DISABLE_KEY:
2053 default:
2054 priv->wep_keys_len[key->keyidx] = 0;
2055 break;
2056 }
2057
2058 priv->wep_enabled = 0;
2059
2060 for (i = 0; i < WEP_KEYS; i++) {
2061 if (priv->wep_keys_len[i] != 0)
2062 priv->wep_enabled = 1;
2063 }
2064
2065 at76_startup_device(priv);
2066
2067 mutex_unlock(&priv->mtx);
2068
2069 return 0;
2070}
2071
2072static const struct ieee80211_ops at76_ops = {
2073 .tx = at76_mac80211_tx,
2074 .add_interface = at76_add_interface,
2075 .remove_interface = at76_remove_interface,
2076 .config = at76_config,
2077 .config_interface = at76_config_interface,
2078 .configure_filter = at76_configure_filter,
2079 .start = at76_mac80211_start,
2080 .stop = at76_mac80211_stop,
2081 .hw_scan = at76_hw_scan,
2082 .set_key = at76_set_key,
2083};
2084
2085/* Allocate network device and initialize private data */
2086static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2087{
2088 struct ieee80211_hw *hw;
2089 struct at76_priv *priv;
2090
2091 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2092 if (!hw) {
2093 printk(KERN_ERR DRIVER_NAME ": could not register"
2094 " ieee80211_hw\n");
2095 return NULL;
2096 }
2097
2098 priv = hw->priv;
2099 priv->hw = hw;
2100
2101 priv->udev = udev;
2102
2103 mutex_init(&priv->mtx);
2104 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2105 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2106 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2107
deda862e 2108 tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
1264b951
KV		 2109
2110 priv->pm_mode = AT76_PM_OFF;
2111 priv->pm_period = 0;
2112
2113 /* unit us */
2114 priv->hw->channel_change_time = 100000;
2115
2116 return priv;
2117}
2118
2119static int at76_alloc_urbs(struct at76_priv *priv,
2120 struct usb_interface *interface)
2121{
2122 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2123 int i;
2124 int buffer_size;
2125 struct usb_host_interface *iface_desc;
2126
2127 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2128
2129 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2130 interface->altsetting[0].desc.bNumEndpoints);
2131
2132 ep_in = NULL;
2133 ep_out = NULL;
2134 iface_desc = interface->cur_altsetting;
2135 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2136 endpoint = &iface_desc->endpoint[i].desc;
2137
2138 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2139 __func__, i, endpoint->bEndpointAddress,
2140 endpoint->bmAttributes);
2141
2142 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2143 ep_in = endpoint;
2144
2145 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2146 ep_out = endpoint;
2147 }
2148
2149 if (!ep_in || !ep_out) {
2150 dev_printk(KERN_ERR, &interface->dev,
2151 "bulk endpoints missing\n");
2152 return -ENXIO;
2153 }
2154
2155 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2156 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2157
2158 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2159 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2160 if (!priv->rx_urb || !priv->tx_urb) {
2161 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2162 return -ENOMEM;
2163 }
2164
2165 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2166 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2167 if (!priv->bulk_out_buffer) {
2168 dev_printk(KERN_ERR, &interface->dev,
2169 "cannot allocate output buffer\n");
2170 return -ENOMEM;
2171 }
2172
2173 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2174
2175 return 0;
2176}
2177
2178static struct ieee80211_rate at76_rates[] = {
2179 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2180 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2181 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2182 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2183};
2184
2185static struct ieee80211_channel at76_channels[] = {
2186 { .center_freq = 2412, .hw_value = 1 },
2187 { .center_freq = 2417, .hw_value = 2 },
2188 { .center_freq = 2422, .hw_value = 3 },
2189 { .center_freq = 2427, .hw_value = 4 },
2190 { .center_freq = 2432, .hw_value = 5 },
2191 { .center_freq = 2437, .hw_value = 6 },
2192 { .center_freq = 2442, .hw_value = 7 },
2193 { .center_freq = 2447, .hw_value = 8 },
2194 { .center_freq = 2452, .hw_value = 9 },
2195 { .center_freq = 2457, .hw_value = 10 },
2196 { .center_freq = 2462, .hw_value = 11 },
2197 { .center_freq = 2467, .hw_value = 12 },
2198 { .center_freq = 2472, .hw_value = 13 },
2199 { .center_freq = 2484, .hw_value = 14 }
2200};
2201
2202static struct ieee80211_supported_band at76_supported_band = {
2203 .channels = at76_channels,
2204 .n_channels = ARRAY_SIZE(at76_channels),
2205 .bitrates = at76_rates,
2206 .n_bitrates = ARRAY_SIZE(at76_rates),
2207};
2208
2209/* Register network device and initialize the hardware */
2210static int at76_init_new_device(struct at76_priv *priv,
2211 struct usb_interface *interface)
2212{
2213 int ret;
2214
2215 /* set up the endpoint information */
2216 /* check out the endpoints */
2217
2218 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2219 interface->cur_altsetting->desc.bNumEndpoints);
2220
2221 ret = at76_alloc_urbs(priv, interface);
2222 if (ret < 0)
2223 goto exit;
2224
2225 /* MAC address */
2226 ret = at76_get_hw_config(priv);
2227 if (ret < 0) {
2228 dev_printk(KERN_ERR, &interface->dev,
2229 "cannot get MAC address\n");
2230 goto exit;
2231 }
2232
2233 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2234
2235 priv->channel = DEF_CHANNEL;
2236 priv->iw_mode = IW_MODE_INFRA;
2237 priv->rts_threshold = DEF_RTS_THRESHOLD;
2238 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2239 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2240 priv->txrate = TX_RATE_AUTO;
2241 priv->preamble_type = PREAMBLE_TYPE_LONG;
2242 priv->beacon_period = 100;
2243 priv->auth_mode = WLAN_AUTH_OPEN;
2244 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2245 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2246 priv->scan_mode = SCAN_TYPE_ACTIVE;
deda862e 2247 priv->device_unplugged = 0;
1264b951
KV		 2248
2249 /* mac80211 initialisation */
19e8bc7f 2250 priv->hw->wiphy->max_scan_ssids = 1;
1264b951
KV		 2251 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2252 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2253 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2254 IEEE80211_HW_SIGNAL_UNSPEC;
19e8bc7f 2255 priv->hw->max_signal = 100;
1264b951
KV		 2256
2257 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2258 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2259
2260 ret = ieee80211_register_hw(priv->hw);
2261 if (ret) {
2262 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2263 ret);
2264 goto exit;
2265 }
2266
2267 priv->mac80211_registered = 1;
2268
2269 printk(KERN_INFO "%s: USB %s, MAC %s, firmware %d.%d.%d-%d\n",
2270 wiphy_name(priv->hw->wiphy),
2a07954b 2271 dev_name(&interface->dev), mac2str(priv->mac_addr),
1264b951
KV		 2272 priv->fw_version.major, priv->fw_version.minor,
2273 priv->fw_version.patch, priv->fw_version.build);
2274 printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n",
2275 wiphy_name(priv->hw->wiphy),
2276 priv->regulatory_domain, priv->domain->name);
2277
2278exit:
2279 return ret;
2280}
2281
2282static void at76_delete_device(struct at76_priv *priv)
2283{
2284 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2285
2286 /* The device is gone, don't bother turning it off */
2287 priv->device_unplugged = 1;
2288
deda862e 2289 tasklet_kill(&priv->rx_tasklet);
1264b951 2290
deda862e 2291 if (priv->mac80211_registered) {
1cc198fe 2292 cancel_delayed_work(&priv->dwork_hw_scan);
deda862e
JA		 2293 flush_workqueue(priv->hw->workqueue);
2294 ieee80211_unregister_hw(priv->hw);
2295 }
1264b951
KV		 2296
2297 if (priv->tx_urb) {
2298 usb_kill_urb(priv->tx_urb);
2299 usb_free_urb(priv->tx_urb);
2300 }
2301 if (priv->rx_urb) {
2302 usb_kill_urb(priv->rx_urb);
2303 usb_free_urb(priv->rx_urb);
2304 }
2305
2306 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2307
deda862e
JA		 2308 kfree(priv->bulk_out_buffer);
2309
1cc198fe
JA		 2310 del_timer_sync(&ledtrig_tx_timer);
2311
1264b951
KV		 2312 if (priv->rx_skb)
2313 kfree_skb(priv->rx_skb);
2314
2315 usb_put_dev(priv->udev);
2316
2317 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2318 __func__);
2319 ieee80211_free_hw(priv->hw);
2320
2321 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2322}
2323
2324static int at76_probe(struct usb_interface *interface,
2325 const struct usb_device_id *id)
2326{
2327 int ret;
2328 struct at76_priv *priv;
2329 struct fwentry *fwe;
2330 struct usb_device *udev;
2331 int op_mode;
2332 int need_ext_fw = 0;
2333 struct mib_fw_version fwv;
2334 int board_type = (int)id->driver_info;
2335
2336 udev = usb_get_dev(interface_to_usbdev(interface));
2337
2338 /* Load firmware into kernel memory */
2339 fwe = at76_load_firmware(udev, board_type);
2340 if (!fwe) {
2341 ret = -ENOENT;
2342 goto error;
2343 }
2344
2345 op_mode = at76_get_op_mode(udev);
2346
2347 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2348
2349 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2350 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2351
2352 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2353 dev_printk(KERN_ERR, &interface->dev,
2354 "cannot handle a device in HW_CONFIG_MODE\n");
2355 ret = -EBUSY;
2356 goto error;
2357 }
2358
2359 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2360 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2361 /* download internal firmware part */
2362 dev_printk(KERN_DEBUG, &interface->dev,
2363 "downloading internal firmware\n");
2364 ret = at76_load_internal_fw(udev, fwe);
2365 if (ret < 0) {
2366 dev_printk(KERN_ERR, &interface->dev,
2367 "error %d downloading internal firmware\n",
2368 ret);
2369 goto error;
2370 }
2371 usb_put_dev(udev);
2372 return ret;
2373 }
2374
2375 /* Internal firmware already inside the device. Get firmware
2376 * version to test if external firmware is loaded.
2377 * This works only for newer firmware, e.g. the Intersil 0.90.x
2378 * says "control timeout on ep0in" and subsequent
2379 * at76_get_op_mode() fail too :-( */
2380
2381 /* if version >= 0.100.x.y or device with built-in flash we can
2382 * query the device for the fw version */
2383 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2384 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2385 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2386 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2387 need_ext_fw = 1;
2388 } else
2389 /* No way to check firmware version, reload to be sure */
2390 need_ext_fw = 1;
2391
2392 if (need_ext_fw) {
2393 dev_printk(KERN_DEBUG, &interface->dev,
2394 "downloading external firmware\n");
2395
2396 ret = at76_load_external_fw(udev, fwe);
2397 if (ret)
2398 goto error;
2399
2400 /* Re-check firmware version */
2401 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2402 if (ret < 0) {
2403 dev_printk(KERN_ERR, &interface->dev,
2404 "error %d getting firmware version\n", ret);
2405 goto error;
2406 }
2407 }
2408
2409 priv = at76_alloc_new_device(udev);
2410 if (!priv) {
2411 ret = -ENOMEM;
2412 goto error;
2413 }
2414
2415 usb_set_intfdata(interface, priv);
2416
2417 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2418 priv->board_type = board_type;
2419
2420 ret = at76_init_new_device(priv, interface);
2421 if (ret < 0)
2422 at76_delete_device(priv);
2423
2424 return ret;
2425
2426error:
2427 usb_put_dev(udev);
2428 return ret;
2429}
2430
2431static void at76_disconnect(struct usb_interface *interface)
2432{
2433 struct at76_priv *priv;
2434
2435 priv = usb_get_intfdata(interface);
2436 usb_set_intfdata(interface, NULL);
2437
2438 /* Disconnect after loading internal firmware */
2439 if (!priv)
2440 return;
2441
2442 printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
2443 at76_delete_device(priv);
2444 dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2445}
2446
2447/* Structure for registering this driver with the USB subsystem */
2448static struct usb_driver at76_driver = {
2449 .name = DRIVER_NAME,
2450 .probe = at76_probe,
2451 .disconnect = at76_disconnect,
2452 .id_table = dev_table,
2453};
2454
2455static int __init at76_mod_init(void)
2456{
2457 int result;
2458
2459 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2460
2461 mutex_init(&fw_mutex);
2462
2463 /* register this driver with the USB subsystem */
2464 result = usb_register(&at76_driver);
2465 if (result < 0)
2466 printk(KERN_ERR DRIVER_NAME
2467 ": usb_register failed (status %d)\n", result);
2468
2469 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2470 return result;
2471}
2472
2473static void __exit at76_mod_exit(void)
2474{
2475 int i;
2476
2477 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2478 usb_deregister(&at76_driver);
2479 for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2480 if (firmwares[i].fw)
2481 release_firmware(firmwares[i].fw);
2482 }
2483 led_trigger_unregister_simple(ledtrig_tx);
2484}
2485
2ce4f9d8 2486module_param_named(debug, at76_debug, uint, 0600);
1264b951
KV		 2487MODULE_PARM_DESC(debug, "Debugging level");
2488
2489module_init(at76_mod_init);
2490module_exit(at76_mod_exit);
2491
2492MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2493MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2494MODULE_AUTHOR("Alex <alex@foogod.com>");
2495MODULE_AUTHOR("Nick Jones");
2496MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2497MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2498MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2499MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2500MODULE_DESCRIPTION(DRIVER_DESC);
2501MODULE_LICENSE("GPL");
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