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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
[linux-2.6-block.git] / drivers / net / wireless / at76c50x-usb.c
CommitLineData
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) },
02a9a392
JL		 253 /* OQO Model 01+ Internal Wi-Fi */
254 { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
1264b951
KV		 255 /*
256 * at76c505amx-rfmd
257 */
258 /* Generic AT76C505AMX device */
259 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
260 { }
261};
262
263MODULE_DEVICE_TABLE(usb, dev_table);
264
265/* Supported rates of this hardware, bit 7 marks basic rates */
266static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
267
268static const char *const preambles[] = { "long", "short", "auto" };
269
270/* Firmware download */
271/* DFU states */
272#define STATE_IDLE 0x00
273#define STATE_DETACH 0x01
274#define STATE_DFU_IDLE 0x02
275#define STATE_DFU_DOWNLOAD_SYNC 0x03
276#define STATE_DFU_DOWNLOAD_BUSY 0x04
277#define STATE_DFU_DOWNLOAD_IDLE 0x05
278#define STATE_DFU_MANIFEST_SYNC 0x06
279#define STATE_DFU_MANIFEST 0x07
280#define STATE_DFU_MANIFEST_WAIT_RESET 0x08
281#define STATE_DFU_UPLOAD_IDLE 0x09
282#define STATE_DFU_ERROR 0x0a
283
284/* DFU commands */
285#define DFU_DETACH 0
286#define DFU_DNLOAD 1
287#define DFU_UPLOAD 2
288#define DFU_GETSTATUS 3
289#define DFU_CLRSTATUS 4
290#define DFU_GETSTATE 5
291#define DFU_ABORT 6
292
293#define FW_BLOCK_SIZE 1024
294
295struct dfu_status {
296 unsigned char status;
297 unsigned char poll_timeout[3];
298 unsigned char state;
299 unsigned char string;
300} __attribute__((packed));
301
302static inline int at76_is_intersil(enum board_type board)
303{
304 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
305}
306
307static inline int at76_is_503rfmd(enum board_type board)
308{
309 return (board == BOARD_503 || board == BOARD_503_ACC);
310}
311
312static inline int at76_is_505a(enum board_type board)
313{
314 return (board == BOARD_505A || board == BOARD_505AMX);
315}
316
317/* Load a block of the first (internal) part of the firmware */
318static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
319 void *block, int size)
320{
321 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
322 USB_TYPE_CLASS | USB_DIR_OUT |
323 USB_RECIP_INTERFACE, blockno, 0, block, size,
324 USB_CTRL_GET_TIMEOUT);
325}
326
327static int at76_dfu_get_status(struct usb_device *udev,
328 struct dfu_status *status)
329{
330 int ret;
331
332 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
333 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
334 0, 0, status, sizeof(struct dfu_status),
335 USB_CTRL_GET_TIMEOUT);
336 return ret;
337}
338
339static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
340{
341 int ret;
342
343 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
344 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
345 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
346 return ret;
347}
348
349/* Convert timeout from the DFU status to jiffies */
350static inline unsigned long at76_get_timeout(struct dfu_status *s)
351{
352 return msecs_to_jiffies((s->poll_timeout[2] << 16)
353 | (s->poll_timeout[1] << 8)
354 | (s->poll_timeout[0]));
355}
356
357/* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
358 * its value in jiffies in the MANIFEST_SYNC state. */
359static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
360 int manifest_sync_timeout)
361{
362 u8 *block;
363 struct dfu_status dfu_stat_buf;
364 int ret = 0;
365 int need_dfu_state = 1;
366 int is_done = 0;
367 u8 dfu_state = 0;
368 u32 dfu_timeout = 0;
369 int bsize = 0;
370 int blockno = 0;
371
372 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
373 manifest_sync_timeout);
374
375 if (!size) {
376 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
377 return -EINVAL;
378 }
379
380 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
381 if (!block)
382 return -ENOMEM;
383
384 do {
385 if (need_dfu_state) {
386 ret = at76_dfu_get_state(udev, &dfu_state);
387 if (ret < 0) {
388 dev_printk(KERN_ERR, &udev->dev,
389 "cannot get DFU state: %d\n", ret);
390 goto exit;
391 }
392 need_dfu_state = 0;
393 }
394
395 switch (dfu_state) {
396 case STATE_DFU_DOWNLOAD_SYNC:
397 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
398 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
399 if (ret >= 0) {
400 dfu_state = dfu_stat_buf.state;
401 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
402 need_dfu_state = 0;
403 } else
404 dev_printk(KERN_ERR, &udev->dev,
405 "at76_dfu_get_status returned %d\n",
406 ret);
407 break;
408
409 case STATE_DFU_DOWNLOAD_BUSY:
410 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
411 need_dfu_state = 1;
412
413 at76_dbg(DBG_DFU, "DFU: Resetting device");
414 schedule_timeout_interruptible(dfu_timeout);
415 break;
416
417 case STATE_DFU_DOWNLOAD_IDLE:
418 at76_dbg(DBG_DFU, "DOWNLOAD...");
419 /* fall through */
420 case STATE_DFU_IDLE:
421 at76_dbg(DBG_DFU, "DFU IDLE");
422
423 bsize = min_t(int, size, FW_BLOCK_SIZE);
424 memcpy(block, buf, bsize);
425 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
426 "bsize = %4d, blockno = %2d", size, bsize,
427 blockno);
428 ret =
429 at76_load_int_fw_block(udev, blockno, block, bsize);
430 buf += bsize;
431 size -= bsize;
432 blockno++;
433
434 if (ret != bsize)
435 dev_printk(KERN_ERR, &udev->dev,
436 "at76_load_int_fw_block "
437 "returned %d\n", ret);
438 need_dfu_state = 1;
439 break;
440
441 case STATE_DFU_MANIFEST_SYNC:
442 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
443
444 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
445 if (ret < 0)
446 break;
447
448 dfu_state = dfu_stat_buf.state;
449 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
450 need_dfu_state = 0;
451
452 /* override the timeout from the status response,
453 needed for AT76C505A */
454 if (manifest_sync_timeout > 0)
455 dfu_timeout = manifest_sync_timeout;
456
457 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
458 schedule_timeout_interruptible(dfu_timeout);
459 break;
460
461 case STATE_DFU_MANIFEST:
462 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
463 is_done = 1;
464 break;
465
466 case STATE_DFU_MANIFEST_WAIT_RESET:
467 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
468 is_done = 1;
469 break;
470
471 case STATE_DFU_UPLOAD_IDLE:
472 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
473 break;
474
475 case STATE_DFU_ERROR:
476 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
477 ret = -EPIPE;
478 break;
479
480 default:
481 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
482 ret = -EINVAL;
483 break;
484 }
485 } while (!is_done && (ret >= 0));
486
487exit:
488 kfree(block);
489 if (ret >= 0)
490 ret = 0;
491
492 return ret;
493}
494
495#define HEX2STR_BUFFERS 4
496#define HEX2STR_MAX_LEN 64
497#define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
498
499/* Convert binary data into hex string */
500static char *hex2str(void *buf, int len)
501{
502 static atomic_t a = ATOMIC_INIT(0);
503 static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
504 char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
505 char *obuf = ret;
506 u8 *ibuf = buf;
507
508 if (len > HEX2STR_MAX_LEN)
509 len = HEX2STR_MAX_LEN;
510
511 if (len <= 0) {
512 ret[0] = '\0';
513 return ret;
514 }
515
516 while (len--) {
517 *obuf++ = BIN2HEX(*ibuf >> 4);
518 *obuf++ = BIN2HEX(*ibuf & 0xf);
519 *obuf++ = '-';
520 ibuf++;
521 }
522 *(--obuf) = '\0';
523
524 return ret;
525}
526
527#define MAC2STR_BUFFERS 4
528
529static inline char *mac2str(u8 *mac)
530{
531 static atomic_t a = ATOMIC_INIT(0);
532 static char bufs[MAC2STR_BUFFERS][6 * 3];
533 char *str;
534
535 str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)];
536 sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
537 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
538 return str;
539}
540
541/* LED trigger */
542static int tx_activity;
543static void at76_ledtrig_tx_timerfunc(unsigned long data);
544static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
545DEFINE_LED_TRIGGER(ledtrig_tx);
546
547static void at76_ledtrig_tx_timerfunc(unsigned long data)
548{
549 static int tx_lastactivity;
550
551 if (tx_lastactivity != tx_activity) {
552 tx_lastactivity = tx_activity;
553 led_trigger_event(ledtrig_tx, LED_FULL);
554 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
555 } else
556 led_trigger_event(ledtrig_tx, LED_OFF);
557}
558
559static void at76_ledtrig_tx_activity(void)
560{
561 tx_activity++;
562 if (!timer_pending(&ledtrig_tx_timer))
563 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
564}
565
566static int at76_remap(struct usb_device *udev)
567{
568 int ret;
569 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
570 USB_TYPE_VENDOR | USB_DIR_OUT |
571 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
572 USB_CTRL_GET_TIMEOUT);
573 if (ret < 0)
574 return ret;
575 return 0;
576}
577
578static int at76_get_op_mode(struct usb_device *udev)
579{
580 int ret;
5a2137dd
JA		 581 u8 saved;
582 u8 *op_mode;
1264b951 583
5a2137dd
JA		 584 op_mode = kmalloc(1, GFP_NOIO);
585 if (!op_mode)
586 return -ENOMEM;
1264b951
KV		 587 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
588 USB_TYPE_VENDOR | USB_DIR_IN |
5a2137dd 589 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
1264b951 590 USB_CTRL_GET_TIMEOUT);
5a2137dd
JA		 591 saved = *op_mode;
592 kfree(op_mode);
593
1264b951
KV		 594 if (ret < 0)
595 return ret;
596 else if (ret < 1)
597 return -EIO;
598 else
5a2137dd 599 return saved;
1264b951
KV		 600}
601
602/* Load a block of the second ("external") part of the firmware */
603static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
604 void *block, int size)
605{
606 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
607 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
608 0x0802, blockno, block, size,
609 USB_CTRL_GET_TIMEOUT);
610}
611
612static inline int at76_get_hw_cfg(struct usb_device *udev,
613 union at76_hwcfg *buf, int buf_size)
614{
615 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
616 USB_TYPE_VENDOR | USB_DIR_IN |
617 USB_RECIP_INTERFACE, 0x0a02, 0,
618 buf, buf_size, USB_CTRL_GET_TIMEOUT);
619}
620
621/* Intersil boards use a different "value" for GetHWConfig requests */
622static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
623 union at76_hwcfg *buf, int buf_size)
624{
625 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
626 USB_TYPE_VENDOR | USB_DIR_IN |
627 USB_RECIP_INTERFACE, 0x0902, 0,
628 buf, buf_size, USB_CTRL_GET_TIMEOUT);
629}
630
631/* Get the hardware configuration for the adapter and put it to the appropriate
632 * fields of 'priv' (the GetHWConfig request and interpretation of the result
633 * depends on the board type) */
634static int at76_get_hw_config(struct at76_priv *priv)
635{
636 int ret;
637 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
638
639 if (!hwcfg)
640 return -ENOMEM;
641
642 if (at76_is_intersil(priv->board_type)) {
643 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
644 sizeof(hwcfg->i));
645 if (ret < 0)
646 goto exit;
647 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
648 priv->regulatory_domain = hwcfg->i.regulatory_domain;
649 } else if (at76_is_503rfmd(priv->board_type)) {
650 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
651 if (ret < 0)
652 goto exit;
653 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
654 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
655 } else {
656 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
657 if (ret < 0)
658 goto exit;
659 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
660 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
661 }
662
663exit:
664 kfree(hwcfg);
665 if (ret < 0)
666 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
667 wiphy_name(priv->hw->wiphy), ret);
668
669 return ret;
670}
671
672static struct reg_domain const *at76_get_reg_domain(u16 code)
673{
674 int i;
675 static struct reg_domain const fd_tab[] = {
676 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */
677 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
678 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */
679 { 0x31, "Spain", 0x600 }, /* ch 10-11 */
680 { 0x32, "France", 0x1e00 }, /* ch 10-13 */
681 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */
682 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */
683 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */
684 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */
685 };
686
687 /* Last entry is fallback for unknown domain code */
688 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
689 if (code == fd_tab[i].code)
690 break;
691
692 return &fd_tab[i];
693}
694
695static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
696 int buf_size)
697{
698 int ret;
699
700 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
701 USB_TYPE_VENDOR | USB_DIR_IN |
702 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
703 USB_CTRL_GET_TIMEOUT);
704 if (ret >= 0 && ret != buf_size)
705 return -EIO;
706 return ret;
707}
708
709/* Return positive number for status, negative for an error */
710static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
711{
5a2137dd 712 u8 *stat_buf;
1264b951
KV		 713 int ret;
714
5a2137dd
JA		 715 stat_buf = kmalloc(40, GFP_NOIO);
716 if (!stat_buf)
717 return -ENOMEM;
718
1264b951 719 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
5a2137dd
JA		 720 USB_TYPE_VENDOR | USB_DIR_IN |
721 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
722 40, USB_CTRL_GET_TIMEOUT);
723 if (ret >= 0)
724 ret = stat_buf[5];
725 kfree(stat_buf);
1264b951 726
5a2137dd 727 return ret;
1264b951
KV		 728}
729
730#define MAKE_CMD_CASE(c) case (c): return #c
1264b951
KV		 731static const char *at76_get_cmd_string(u8 cmd_status)
732{
733 switch (cmd_status) {
734 MAKE_CMD_CASE(CMD_SET_MIB);
735 MAKE_CMD_CASE(CMD_GET_MIB);
736 MAKE_CMD_CASE(CMD_SCAN);
737 MAKE_CMD_CASE(CMD_JOIN);
738 MAKE_CMD_CASE(CMD_START_IBSS);
739 MAKE_CMD_CASE(CMD_RADIO_ON);
740 MAKE_CMD_CASE(CMD_RADIO_OFF);
741 MAKE_CMD_CASE(CMD_STARTUP);
742 }
743
744 return "UNKNOWN";
745}
746
5a2137dd 747static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
1264b951
KV		 748 int buf_size)
749{
750 int ret;
751 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
752 buf_size, GFP_KERNEL);
753
754 if (!cmd_buf)
755 return -ENOMEM;
756
757 cmd_buf->cmd = cmd;
758 cmd_buf->reserved = 0;
759 cmd_buf->size = cpu_to_le16(buf_size);
760 memcpy(cmd_buf->data, buf, buf_size);
761
762 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
763 "issuing command %s (0x%02x)",
764 at76_get_cmd_string(cmd), cmd);
765
766 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
767 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
768 0, 0, cmd_buf,
769 sizeof(struct at76_command) + buf_size,
770 USB_CTRL_GET_TIMEOUT);
771 kfree(cmd_buf);
772 return ret;
773}
774
775#define MAKE_CMD_STATUS_CASE(c) case (c): return #c
776static const char *at76_get_cmd_status_string(u8 cmd_status)
777{
778 switch (cmd_status) {
779 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
780 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
781 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
782 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
783 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
784 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
785 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
786 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
787 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
788 }
789
790 return "UNKNOWN";
791}
792
793/* Wait until the command is completed */
794static int at76_wait_completion(struct at76_priv *priv, int cmd)
795{
796 int status = 0;
797 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
798
799 do {
800 status = at76_get_cmd_status(priv->udev, cmd);
801 if (status < 0) {
802 printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
803 wiphy_name(priv->hw->wiphy), status);
804 break;
805 }
806
807 at76_dbg(DBG_WAIT_COMPLETE,
808 "%s: Waiting on cmd %d, status = %d (%s)",
809 wiphy_name(priv->hw->wiphy), cmd, status,
810 at76_get_cmd_status_string(status));
811
812 if (status != CMD_STATUS_IN_PROGRESS
813 && status != CMD_STATUS_IDLE)
814 break;
815
816 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
817 if (time_after(jiffies, timeout)) {
818 printk(KERN_ERR
819 "%s: completion timeout for command %d\n",
820 wiphy_name(priv->hw->wiphy), cmd);
821 status = -ETIMEDOUT;
822 break;
823 }
824 } while (1);
825
826 return status;
827}
828
829static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
830{
831 int ret;
832
833 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
834 offsetof(struct set_mib_buffer,
835 data) + buf->size);
836 if (ret < 0)
837 return ret;
838
839 ret = at76_wait_completion(priv, CMD_SET_MIB);
840 if (ret != CMD_STATUS_COMPLETE) {
841 printk(KERN_INFO
842 "%s: set_mib: at76_wait_completion failed "
843 "with %d\n", wiphy_name(priv->hw->wiphy), ret);
844 ret = -EIO;
845 }
846
847 return ret;
848}
849
850/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
851static int at76_set_radio(struct at76_priv *priv, int enable)
852{
853 int ret;
854 int cmd;
855
856 if (priv->radio_on == enable)
857 return 0;
858
859 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
860
861 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
862 if (ret < 0)
863 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
864 wiphy_name(priv->hw->wiphy), cmd, ret);
865 else
866 ret = 1;
867
868 priv->radio_on = enable;
869 return ret;
870}
871
872/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
873static int at76_set_pm_mode(struct at76_priv *priv)
874{
875 int ret = 0;
876
877 priv->mib_buf.type = MIB_MAC_MGMT;
878 priv->mib_buf.size = 1;
879 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
880 priv->mib_buf.data.byte = priv->pm_mode;
881
882 ret = at76_set_mib(priv, &priv->mib_buf);
883 if (ret < 0)
884 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
885 wiphy_name(priv->hw->wiphy), ret);
886
887 return ret;
888}
889
890static int at76_set_preamble(struct at76_priv *priv, u8 type)
891{
892 int ret = 0;
893
894 priv->mib_buf.type = MIB_LOCAL;
895 priv->mib_buf.size = 1;
896 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
897 priv->mib_buf.data.byte = type;
898
899 ret = at76_set_mib(priv, &priv->mib_buf);
900 if (ret < 0)
901 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
902 wiphy_name(priv->hw->wiphy), ret);
903
904 return ret;
905}
906
907static int at76_set_frag(struct at76_priv *priv, u16 size)
908{
909 int ret = 0;
910
911 priv->mib_buf.type = MIB_MAC;
912 priv->mib_buf.size = 2;
913 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
914 priv->mib_buf.data.word = cpu_to_le16(size);
915
916 ret = at76_set_mib(priv, &priv->mib_buf);
917 if (ret < 0)
918 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
919 wiphy_name(priv->hw->wiphy), ret);
920
921 return ret;
922}
923
924static int at76_set_rts(struct at76_priv *priv, u16 size)
925{
926 int ret = 0;
927
928 priv->mib_buf.type = MIB_MAC;
929 priv->mib_buf.size = 2;
930 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
931 priv->mib_buf.data.word = cpu_to_le16(size);
932
933 ret = at76_set_mib(priv, &priv->mib_buf);
934 if (ret < 0)
935 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
936 wiphy_name(priv->hw->wiphy), ret);
937
938 return ret;
939}
940
941static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
942{
943 int ret = 0;
944
945 priv->mib_buf.type = MIB_LOCAL;
946 priv->mib_buf.size = 1;
947 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
948 priv->mib_buf.data.byte = onoff;
949
950 ret = at76_set_mib(priv, &priv->mib_buf);
951 if (ret < 0)
952 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
953 wiphy_name(priv->hw->wiphy), ret);
954
955 return ret;
956}
957
958static void at76_dump_mib_mac_addr(struct at76_priv *priv)
959{
960 int i;
961 int ret;
962 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
963 GFP_KERNEL);
964
965 if (!m)
966 return;
967
968 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
969 sizeof(struct mib_mac_addr));
970 if (ret < 0) {
971 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
972 wiphy_name(priv->hw->wiphy), ret);
973 goto exit;
974 }
975
976 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %s res 0x%x 0x%x",
977 wiphy_name(priv->hw->wiphy),
978 mac2str(m->mac_addr), m->res[0], m->res[1]);
979 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
980 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %s, "
981 "status %d", wiphy_name(priv->hw->wiphy), i,
982 mac2str(m->group_addr[i]), m->group_addr_status[i]);
983exit:
984 kfree(m);
985}
986
987static void at76_dump_mib_mac_wep(struct at76_priv *priv)
988{
989 int i;
990 int ret;
991 int key_len;
992 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
993
994 if (!m)
995 return;
996
997 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
998 sizeof(struct mib_mac_wep));
999 if (ret < 0) {
1000 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
1001 wiphy_name(priv->hw->wiphy), ret);
1002 goto exit;
1003 }
1004
1005 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1006 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1007 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
1008 m->privacy_invoked, m->wep_default_key_id,
1009 m->wep_key_mapping_len, m->exclude_unencrypted,
1010 le32_to_cpu(m->wep_icv_error_count),
1011 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1012 m->wep_default_key_id);
1013
1014 key_len = (m->encryption_level == 1) ?
1015 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1016
1017 for (i = 0; i < WEP_KEYS; i++)
1018 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1019 wiphy_name(priv->hw->wiphy), i,
1020 hex2str(m->wep_default_keyvalue[i], key_len));
1021exit:
1022 kfree(m);
1023}
1024
1025static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1026{
1027 int ret;
1028 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1029 GFP_KERNEL);
1030
1031 if (!m)
1032 return;
1033
1034 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1035 sizeof(struct mib_mac_mgmt));
1036 if (ret < 0) {
1037 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1038 wiphy_name(priv->hw->wiphy), ret);
1039 goto exit;
1040 }
1041
1042 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1043 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1044 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1045 "current_bssid %s current_essid %s current_bss_type %d "
1046 "pm_mode %d ibss_change %d res %d "
1047 "multi_domain_capability_implemented %d "
1048 "international_roaming %d country_string %.3s",
1049 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1050 le16_to_cpu(m->CFP_max_duration),
1051 le16_to_cpu(m->medium_occupancy_limit),
1052 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1053 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1054 m->CFP_period, mac2str(m->current_bssid),
1055 hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1056 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1057 m->res, m->multi_domain_capability_implemented,
1058 m->multi_domain_capability_enabled, m->country_string);
1059exit:
1060 kfree(m);
1061}
1062
1063static void at76_dump_mib_mac(struct at76_priv *priv)
1064{
1065 int ret;
1066 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1067
1068 if (!m)
1069 return;
1070
1071 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1072 if (ret < 0) {
1073 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1074 wiphy_name(priv->hw->wiphy), ret);
1075 goto exit;
1076 }
1077
1078 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1079 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1080 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1081 "scan_type %d scan_channel %d probe_delay %u "
1082 "min_channel_time %d max_channel_time %d listen_int %d "
1083 "desired_ssid %s desired_bssid %s desired_bsstype %d",
1084 wiphy_name(priv->hw->wiphy),
1085 le32_to_cpu(m->max_tx_msdu_lifetime),
1086 le32_to_cpu(m->max_rx_lifetime),
1087 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1088 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1089 m->short_retry_time, m->long_retry_time, m->scan_type,
1090 m->scan_channel, le16_to_cpu(m->probe_delay),
1091 le16_to_cpu(m->min_channel_time),
1092 le16_to_cpu(m->max_channel_time),
1093 le16_to_cpu(m->listen_interval),
1094 hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1095 mac2str(m->desired_bssid), m->desired_bsstype);
1096exit:
1097 kfree(m);
1098}
1099
1100static void at76_dump_mib_phy(struct at76_priv *priv)
1101{
1102 int ret;
1103 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1104
1105 if (!m)
1106 return;
1107
1108 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1109 if (ret < 0) {
1110 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1111 wiphy_name(priv->hw->wiphy), ret);
1112 goto exit;
1113 }
1114
1115 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1116 "sifs_time %d preamble_length %d plcp_header_length %d "
1117 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1118 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1119 "phy_type %d current_reg_domain %d",
1120 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1121 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1122 le16_to_cpu(m->preamble_length),
1123 le16_to_cpu(m->plcp_header_length),
1124 le16_to_cpu(m->mpdu_max_length),
1125 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1126 m->operation_rate_set[1], m->operation_rate_set[2],
1127 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1128 m->phy_type, m->current_reg_domain);
1129exit:
1130 kfree(m);
1131}
1132
1133static void at76_dump_mib_local(struct at76_priv *priv)
1134{
1135 int ret;
1136 struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1137
1138 if (!m)
1139 return;
1140
1141 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1142 if (ret < 0) {
1143 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1144 wiphy_name(priv->hw->wiphy), ret);
1145 goto exit;
1146 }
1147
1148 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1149 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1150 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1151 m->beacon_enable,
1152 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1153 m->preamble_type);
1154exit:
1155 kfree(m);
1156}
1157
1158static void at76_dump_mib_mdomain(struct at76_priv *priv)
1159{
1160 int ret;
1161 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1162
1163 if (!m)
1164 return;
1165
1166 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1167 sizeof(struct mib_mdomain));
1168 if (ret < 0) {
1169 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1170 wiphy_name(priv->hw->wiphy), ret);
1171 goto exit;
1172 }
1173
1174 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1175 wiphy_name(priv->hw->wiphy),
1176 hex2str(m->channel_list, sizeof(m->channel_list)));
1177
1178 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1179 wiphy_name(priv->hw->wiphy),
1180 hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1181exit:
1182 kfree(m);
1183}
1184
1185/* Enable monitor mode */
1186static int at76_start_monitor(struct at76_priv *priv)
1187{
1188 struct at76_req_scan scan;
1189 int ret;
1190
1191 memset(&scan, 0, sizeof(struct at76_req_scan));
1192 memset(scan.bssid, 0xff, ETH_ALEN);
1193
1194 scan.channel = priv->channel;
1195 scan.scan_type = SCAN_TYPE_PASSIVE;
1196 scan.international_scan = 0;
1197
1198 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1199 if (ret >= 0)
1200 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1201
1202 return ret;
1203}
1204
1205/* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1206 likely to compensate a flaw in the AT76C503A USB part ... */
1207static inline int at76_calc_padding(int wlen)
1208{
1209 /* add the USB TX header */
1210 wlen += AT76_TX_HDRLEN;
1211
1212 wlen = wlen % 64;
1213
1214 if (wlen < 50)
1215 return 50 - wlen;
1216
1217 if (wlen >= 61)
1218 return 64 + 50 - wlen;
1219
1220 return 0;
1221}
1222
1223static void at76_rx_callback(struct urb *urb)
1224{
1225 struct at76_priv *priv = urb->context;
1226
1227 priv->rx_tasklet.data = (unsigned long)urb;
1228 tasklet_schedule(&priv->rx_tasklet);
1229 return;
1230}
1231
1232static int at76_submit_rx_urb(struct at76_priv *priv)
1233{
1234 int ret;
1235 int size;
1236 struct sk_buff *skb = priv->rx_skb;
1237
1238 if (!priv->rx_urb) {
1239 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
1240 wiphy_name(priv->hw->wiphy), __func__);
1241 return -EFAULT;
1242 }
1243
1244 if (!skb) {
1245 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1246 if (!skb) {
1247 printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
1248 wiphy_name(priv->hw->wiphy));
1249 ret = -ENOMEM;
1250 goto exit;
1251 }
1252 priv->rx_skb = skb;
1253 } else {
1254 skb_push(skb, skb_headroom(skb));
1255 skb_trim(skb, 0);
1256 }
1257
1258 size = skb_tailroom(skb);
1259 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1260 skb_put(skb, size), size, at76_rx_callback, priv);
1261 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1262 if (ret < 0) {
1263 if (ret == -ENODEV)
1264 at76_dbg(DBG_DEVSTART,
1265 "usb_submit_urb returned -ENODEV");
1266 else
1267 printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
1268 wiphy_name(priv->hw->wiphy), ret);
1269 }
1270
1271exit:
1272 if (ret < 0 && ret != -ENODEV)
1273 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
1274 "driver and/or power cycle the device\n",
1275 wiphy_name(priv->hw->wiphy));
1276
1277 return ret;
1278}
1279
1280/* Download external firmware */
1281static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1282{
1283 int ret;
1284 int op_mode;
1285 int blockno = 0;
1286 int bsize;
1287 u8 *block;
1288 u8 *buf = fwe->extfw;
1289 int size = fwe->extfw_size;
1290
1291 if (!buf || !size)
1292 return -ENOENT;
1293
1294 op_mode = at76_get_op_mode(udev);
1295 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1296
1297 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1298 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1299 op_mode);
1300 return -EINVAL;
1301 }
1302
1303 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1304 if (!block)
1305 return -ENOMEM;
1306
1307 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1308
1309 /* for fw >= 0.100, the device needs an extra empty block */
1310 do {
1311 bsize = min_t(int, size, FW_BLOCK_SIZE);
1312 memcpy(block, buf, bsize);
1313 at76_dbg(DBG_DEVSTART,
1314 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1315 size, bsize, blockno);
1316 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1317 if (ret != bsize) {
1318 dev_printk(KERN_ERR, &udev->dev,
1319 "loading %dth firmware block failed: %d\n",
1320 blockno, ret);
1321 goto exit;
1322 }
1323 buf += bsize;
1324 size -= bsize;
1325 blockno++;
1326 } while (bsize > 0);
1327
1328 if (at76_is_505a(fwe->board_type)) {
1329 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1330 schedule_timeout_interruptible(HZ / 5 + 1);
1331 }
1332
1333exit:
1334 kfree(block);
1335 if (ret < 0)
1336 dev_printk(KERN_ERR, &udev->dev,
1337 "downloading external firmware failed: %d\n", ret);
1338 return ret;
1339}
1340
1341/* Download internal firmware */
1342static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1343{
1344 int ret;
1345 int need_remap = !at76_is_505a(fwe->board_type);
1346
1347 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1348 need_remap ? 0 : 2 * HZ);
1349
1350 if (ret < 0) {
1351 dev_printk(KERN_ERR, &udev->dev,
1352 "downloading internal fw failed with %d\n", ret);
1353 goto exit;
1354 }
1355
1356 at76_dbg(DBG_DEVSTART, "sending REMAP");
1357
1358 /* no REMAP for 505A (see SF driver) */
1359 if (need_remap) {
1360 ret = at76_remap(udev);
1361 if (ret < 0) {
1362 dev_printk(KERN_ERR, &udev->dev,
1363 "sending REMAP failed with %d\n", ret);
1364 goto exit;
1365 }
1366 }
1367
1368 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1369 schedule_timeout_interruptible(2 * HZ + 1);
1370 usb_reset_device(udev);
1371
1372exit:
1373 return ret;
1374}
1375
1376static int at76_startup_device(struct at76_priv *priv)
1377{
1378 struct at76_card_config *ccfg = &priv->card_config;
1379 int ret;
1380
1381 at76_dbg(DBG_PARAMS,
1382 "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1383 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1384 priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1385 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1386 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1387 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1388 at76_dbg(DBG_PARAMS,
1389 "%s param: preamble %s rts %d retry %d frag %d "
1390 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1391 preambles[priv->preamble_type], priv->rts_threshold,
1392 priv->short_retry_limit, priv->frag_threshold,
1393 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1394 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1395 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1396 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1397 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1398 at76_dbg(DBG_PARAMS,
1399 "%s param: pm_mode %d pm_period %d auth_mode %s "
1400 "scan_times %d %d scan_mode %s",
1401 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1402 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1403 priv->scan_min_time, priv->scan_max_time,
1404 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1405
1406 memset(ccfg, 0, sizeof(struct at76_card_config));
1407 ccfg->promiscuous_mode = 0;
1408 ccfg->short_retry_limit = priv->short_retry_limit;
1409
1410 if (priv->wep_enabled) {
1411 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1412 ccfg->encryption_type = 2;
1413 else
1414 ccfg->encryption_type = 1;
1415
1416 /* jal: always exclude unencrypted if WEP is active */
1417 ccfg->exclude_unencrypted = 1;
1418 } else {
1419 ccfg->exclude_unencrypted = 0;
1420 ccfg->encryption_type = 0;
1421 }
1422
1423 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1424 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1425
1426 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1427 /* jal: really needed, we do a set_mib for autorate later ??? */
1428 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1429 ccfg->channel = priv->channel;
1430 ccfg->privacy_invoked = priv->wep_enabled;
1431 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1432 ccfg->ssid_len = priv->essid_size;
1433
1434 ccfg->wep_default_key_id = priv->wep_key_id;
1435 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1436 sizeof(priv->wep_keys));
1437
1438 ccfg->short_preamble = priv->preamble_type;
1439 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1440
1441 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1442 sizeof(struct at76_card_config));
1443 if (ret < 0) {
1444 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1445 wiphy_name(priv->hw->wiphy), ret);
1446 return ret;
1447 }
1448
1449 at76_wait_completion(priv, CMD_STARTUP);
1450
1451 /* remove BSSID from previous run */
1452 memset(priv->bssid, 0, ETH_ALEN);
1453
1454 if (at76_set_radio(priv, 1) == 1)
1455 at76_wait_completion(priv, CMD_RADIO_ON);
1456
1457 ret = at76_set_preamble(priv, priv->preamble_type);
1458 if (ret < 0)
1459 return ret;
1460
1461 ret = at76_set_frag(priv, priv->frag_threshold);
1462 if (ret < 0)
1463 return ret;
1464
1465 ret = at76_set_rts(priv, priv->rts_threshold);
1466 if (ret < 0)
1467 return ret;
1468
1469 ret = at76_set_autorate_fallback(priv,
1470 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1471 if (ret < 0)
1472 return ret;
1473
1474 ret = at76_set_pm_mode(priv);
1475 if (ret < 0)
1476 return ret;
1477
1478 if (at76_debug & DBG_MIB) {
1479 at76_dump_mib_mac(priv);
1480 at76_dump_mib_mac_addr(priv);
1481 at76_dump_mib_mac_mgmt(priv);
1482 at76_dump_mib_mac_wep(priv);
1483 at76_dump_mib_mdomain(priv);
1484 at76_dump_mib_phy(priv);
1485 at76_dump_mib_local(priv);
1486 }
1487
1488 return 0;
1489}
1490
1491/* Enable or disable promiscuous mode */
1492static void at76_work_set_promisc(struct work_struct *work)
1493{
1494 struct at76_priv *priv = container_of(work, struct at76_priv,
1495 work_set_promisc);
1496 int ret = 0;
1497
1cc198fe
JA		 1498 if (priv->device_unplugged)
1499 return;
1500
1264b951
KV		 1501 mutex_lock(&priv->mtx);
1502
1503 priv->mib_buf.type = MIB_LOCAL;
1504 priv->mib_buf.size = 1;
1505 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1506 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1507
1508 ret = at76_set_mib(priv, &priv->mib_buf);
1509 if (ret < 0)
1510 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
1511 wiphy_name(priv->hw->wiphy), ret);
1512
1513 mutex_unlock(&priv->mtx);
1514}
1515
1516/* Submit Rx urb back to the device */
1517static void at76_work_submit_rx(struct work_struct *work)
1518{
1519 struct at76_priv *priv = container_of(work, struct at76_priv,
1520 work_submit_rx);
1521
1522 mutex_lock(&priv->mtx);
1523 at76_submit_rx_urb(priv);
1524 mutex_unlock(&priv->mtx);
1525}
1526
1527static void at76_rx_tasklet(unsigned long param)
1528{
1529 struct urb *urb = (struct urb *)param;
1530 struct at76_priv *priv = urb->context;
1531 struct at76_rx_buffer *buf;
1532 struct ieee80211_rx_status rx_status = { 0 };
1533
1534 if (priv->device_unplugged) {
1535 at76_dbg(DBG_DEVSTART, "device unplugged");
1536 if (urb)
1537 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1538 return;
1539 }
1540
1541 if (!priv->rx_skb || !priv->rx_skb->data)
1542 return;
1543
1544 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1545
1546 if (urb->status != 0) {
1547 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1548 at76_dbg(DBG_URB,
1549 "%s %s: - nonzero Rx bulk status received: %d",
1550 __func__, wiphy_name(priv->hw->wiphy),
1551 urb->status);
1552 return;
1553 }
1554
1555 at76_dbg(DBG_RX_ATMEL_HDR,
1556 "%s: rx frame: rate %d rssi %d noise %d link %d",
1557 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1558 buf->noise_level, buf->link_quality);
1559
1560 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1561 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1562 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1563 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1564
1565 rx_status.signal = buf->rssi;
1566 rx_status.flag |= RX_FLAG_DECRYPTED;
1567 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1568
1569 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1570 priv->rx_skb->len, priv->rx_skb->data_len);
1571 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb, &rx_status);
1572
1573 /* Use a new skb for the next receive */
1574 priv->rx_skb = NULL;
1575
1576 at76_submit_rx_urb(priv);
1577}
1578
1579/* Load firmware into kernel memory and parse it */
1580static struct fwentry *at76_load_firmware(struct usb_device *udev,
1581 enum board_type board_type)
1582{
1583 int ret;
1584 char *str;
1585 struct at76_fw_header *fwh;
1586 struct fwentry *fwe = &firmwares[board_type];
1587
1588 mutex_lock(&fw_mutex);
1589
1590 if (fwe->loaded) {
1591 at76_dbg(DBG_FW, "re-using previously loaded fw");
1592 goto exit;
1593 }
1594
1595 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1596 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1597 if (ret < 0) {
1598 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1599 fwe->fwname);
1600 dev_printk(KERN_ERR, &udev->dev,
1601 "you may need to download the firmware from "
1602 "http://developer.berlios.de/projects/at76c503a/\n");
1603 goto exit;
1604 }
1605
1606 at76_dbg(DBG_FW, "got it.");
1607 fwh = (struct at76_fw_header *)(fwe->fw->data);
1608
1609 if (fwe->fw->size <= sizeof(*fwh)) {
1610 dev_printk(KERN_ERR, &udev->dev,
1611 "firmware is too short (0x%zx)\n", fwe->fw->size);
1612 goto exit;
1613 }
1614
1615 /* CRC currently not checked */
1616 fwe->board_type = le32_to_cpu(fwh->board_type);
1617 if (fwe->board_type != board_type) {
1618 dev_printk(KERN_ERR, &udev->dev,
1619 "board type mismatch, requested %u, got %u\n",
1620 board_type, fwe->board_type);
1621 goto exit;
1622 }
1623
1624 fwe->fw_version.major = fwh->major;
1625 fwe->fw_version.minor = fwh->minor;
1626 fwe->fw_version.patch = fwh->patch;
1627 fwe->fw_version.build = fwh->build;
1628
1629 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1630 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1631 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1632 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1633 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1634
1635 fwe->loaded = 1;
1636
1637 dev_printk(KERN_DEBUG, &udev->dev,
1638 "using firmware %s (version %d.%d.%d-%d)\n",
1639 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1640
1641 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1642 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1643 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1644 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1645
1646exit:
1647 mutex_unlock(&fw_mutex);
1648
1649 if (fwe->loaded)
1650 return fwe;
1651 else
1652 return NULL;
1653}
1654
1655static void at76_mac80211_tx_callback(struct urb *urb)
1656{
1657 struct at76_priv *priv = urb->context;
1658 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1659
1660 at76_dbg(DBG_MAC80211, "%s()", __func__);
1661
1662 switch (urb->status) {
1663 case 0:
1664 /* success */
1665 info->flags |= IEEE80211_TX_STAT_ACK;
1666 break;
1667 case -ENOENT:
1668 case -ECONNRESET:
1669 /* fail, urb has been unlinked */
1670 /* FIXME: add error message */
1671 break;
1672 default:
1673 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1674 __func__, urb->status);
1675 break;
1676 }
1677
1678 memset(&info->status, 0, sizeof(info->status));
1679
1680 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1681
1682 priv->tx_skb = NULL;
1683
1684 ieee80211_wake_queues(priv->hw);
1685}
1686
1687static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1688{
1689 struct at76_priv *priv = hw->priv;
1690 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1691 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1692 int padding, submit_len, ret;
1693
1694 at76_dbg(DBG_MAC80211, "%s()", __func__);
1695
1696 if (priv->tx_urb->status == -EINPROGRESS) {
1697 printk(KERN_ERR "%s: %s called while tx urb is pending\n",
1698 wiphy_name(priv->hw->wiphy), __func__);
1699 return NETDEV_TX_BUSY;
1700 }
1701
1702 ieee80211_stop_queues(hw);
1703
1704 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
1705
1706 WARN_ON(priv->tx_skb != NULL);
1707
1708 priv->tx_skb = skb;
1709 padding = at76_calc_padding(skb->len);
1710 submit_len = AT76_TX_HDRLEN + skb->len + padding;
1711
1712 /* setup 'Atmel' header */
1713 memset(tx_buffer, 0, sizeof(*tx_buffer));
1714 tx_buffer->padding = padding;
1715 tx_buffer->wlength = cpu_to_le16(skb->len);
1716 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1717 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1718 memcpy(tx_buffer->packet, skb->data, skb->len);
1719
1720 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1721 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1722 tx_buffer->padding, tx_buffer->tx_rate);
1723
1724 /* send stuff */
1725 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1726 "%s(): tx_buffer %d bytes:", __func__, submit_len);
1727 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1728 submit_len, at76_mac80211_tx_callback, priv);
1729 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1730 if (ret) {
1731 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1732 wiphy_name(priv->hw->wiphy), ret);
1733 if (ret == -EINVAL)
1734 printk(KERN_ERR
1735 "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
1736 wiphy_name(priv->hw->wiphy), priv->tx_urb,
1737 priv->tx_urb->hcpriv, priv->tx_urb->complete);
1738 }
1739
1740 return 0;
1741}
1742
1743static int at76_mac80211_start(struct ieee80211_hw *hw)
1744{
1745 struct at76_priv *priv = hw->priv;
1746 int ret;
1747
1748 at76_dbg(DBG_MAC80211, "%s()", __func__);
1749
1750 mutex_lock(&priv->mtx);
1751
1752 ret = at76_submit_rx_urb(priv);
1753 if (ret < 0) {
1754 printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
1755 wiphy_name(priv->hw->wiphy), ret);
1756 goto error;
1757 }
1758
1759 at76_startup_device(priv);
1760
1761 at76_start_monitor(priv);
1762
1763error:
1764 mutex_unlock(&priv->mtx);
1765
1766 return 0;
1767}
1768
1769static void at76_mac80211_stop(struct ieee80211_hw *hw)
1770{
1771 struct at76_priv *priv = hw->priv;
1772
1773 at76_dbg(DBG_MAC80211, "%s()", __func__);
1774
1775 mutex_lock(&priv->mtx);
1776
1777 if (!priv->device_unplugged) {
1778 /* We are called by "ifconfig ethX down", not because the
1779 * device is not available anymore. */
1780 at76_set_radio(priv, 0);
1781
1782 /* We unlink rx_urb because at76_open() re-submits it.
1783 * If unplugged, at76_delete_device() takes care of it. */
1784 usb_kill_urb(priv->rx_urb);
1785 }
1786
1787 mutex_unlock(&priv->mtx);
1788}
1789
1790static int at76_add_interface(struct ieee80211_hw *hw,
1791 struct ieee80211_if_init_conf *conf)
1792{
1793 struct at76_priv *priv = hw->priv;
1794 int ret = 0;
1795
1796 at76_dbg(DBG_MAC80211, "%s()", __func__);
1797
1798 mutex_lock(&priv->mtx);
1799
1800 switch (conf->type) {
1801 case NL80211_IFTYPE_STATION:
1802 priv->iw_mode = IW_MODE_INFRA;
1803 break;
1804 default:
1805 ret = -EOPNOTSUPP;
1806 goto exit;
1807 }
1808
1809exit:
1810 mutex_unlock(&priv->mtx);
1811
1812 return ret;
1813}
1814
1815static void at76_remove_interface(struct ieee80211_hw *hw,
1816 struct ieee80211_if_init_conf *conf)
1817{
1818 at76_dbg(DBG_MAC80211, "%s()", __func__);
1819}
1820
1821static int at76_join(struct at76_priv *priv)
1822{
1823 struct at76_req_join join;
1824 int ret;
1825
1826 memset(&join, 0, sizeof(struct at76_req_join));
1827 memcpy(join.essid, priv->essid, priv->essid_size);
1828 join.essid_size = priv->essid_size;
1829 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1830 join.bss_type = INFRASTRUCTURE_MODE;
1831 join.channel = priv->channel;
1832 join.timeout = cpu_to_le16(2000);
1833
1834 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1835 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1836 sizeof(struct at76_req_join));
1837
1838 if (ret < 0) {
1839 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1840 wiphy_name(priv->hw->wiphy), ret);
1841 return 0;
1842 }
1843
1844 ret = at76_wait_completion(priv, CMD_JOIN);
1845 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1846 if (ret != CMD_STATUS_COMPLETE) {
1847 printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
1848 wiphy_name(priv->hw->wiphy), ret);
1849 return 0;
1850 }
1851
1852 at76_set_pm_mode(priv);
1853
1854 return 0;
1855}
1856
1857static void at76_dwork_hw_scan(struct work_struct *work)
1858{
1859 struct at76_priv *priv = container_of(work, struct at76_priv,
1860 dwork_hw_scan.work);
1861 int ret;
1862
deda862e
JA		 1863 if (priv->device_unplugged)
1864 return;
1865
1264b951
KV		 1866 mutex_lock(&priv->mtx);
1867
1868 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1869 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1870
1871 /* FIXME: add maximum time for scan to complete */
1872
1873 if (ret != CMD_STATUS_COMPLETE) {
1874 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
1875 SCAN_POLL_INTERVAL);
1876 goto exit;
1877 }
1878
19e8bc7f 1879 ieee80211_scan_completed(priv->hw, false);
1264b951
KV		 1880
1881 if (is_valid_ether_addr(priv->bssid))
1882 at76_join(priv);
1883
1884 ieee80211_wake_queues(priv->hw);
1885
1886exit:
1887 mutex_unlock(&priv->mtx);
1888}
1889
19e8bc7f
JA		 1890static int at76_hw_scan(struct ieee80211_hw *hw,
1891 struct cfg80211_scan_request *req)
1264b951
KV		 1892{
1893 struct at76_priv *priv = hw->priv;
1894 struct at76_req_scan scan;
19e8bc7f
JA		 1895 u8 *ssid = NULL;
1896 int ret, len = 0;
1264b951
KV		 1897
1898 at76_dbg(DBG_MAC80211, "%s():", __func__);
1264b951 1899
deda862e
JA		 1900 if (priv->device_unplugged)
1901 return 0;
1902
1264b951
KV		 1903 mutex_lock(&priv->mtx);
1904
1905 ieee80211_stop_queues(hw);
1906
1907 memset(&scan, 0, sizeof(struct at76_req_scan));
1908 memset(scan.bssid, 0xFF, ETH_ALEN);
19e8bc7f
JA		 1909
1910 if (req->n_ssids) {
1911 scan.scan_type = SCAN_TYPE_ACTIVE;
1912 ssid = req->ssids[0].ssid;
1913 len = req->ssids[0].ssid_len;
1914 } else {
1915 scan.scan_type = SCAN_TYPE_PASSIVE;
1916 }
1917
1918 if (len) {
1264b951
KV		 1919 memcpy(scan.essid, ssid, len);
1920 scan.essid_size = len;
1921 }
19e8bc7f 1922
1264b951
KV		 1923 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1924 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1925 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1926 scan.international_scan = 0;
1927
1928 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1929 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1930
1931 if (ret < 0) {
1932 err("CMD_SCAN failed: %d", ret);
1933 goto exit;
1934 }
1935
1936 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
1937 SCAN_POLL_INTERVAL);
1938
1939exit:
1940 mutex_unlock(&priv->mtx);
1941
1942 return 0;
1943}
1944
1945static int at76_config(struct ieee80211_hw *hw, u32 changed)
1946{
1947 struct at76_priv *priv = hw->priv;
1948
1949 at76_dbg(DBG_MAC80211, "%s(): channel %d radio %d",
1950 __func__, hw->conf.channel->hw_value,
1951 hw->conf.radio_enabled);
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
1968static int at76_config_interface(struct ieee80211_hw *hw,
1969 struct ieee80211_vif *vif,
1970 struct ieee80211_if_conf *conf)
1971{
1972 struct at76_priv *priv = hw->priv;
1973
1974 at76_dbg(DBG_MAC80211, "%s():", __func__);
1975 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
1976
1977 mutex_lock(&priv->mtx);
1978
1979 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1980
1981 if (is_valid_ether_addr(priv->bssid))
1982 /* mac80211 is joining a bss */
1983 at76_join(priv);
1984
1985 mutex_unlock(&priv->mtx);
1986
1987 return 0;
1988}
1989
1990/* must be atomic */
1991static void at76_configure_filter(struct ieee80211_hw *hw,
1992 unsigned int changed_flags,
1993 unsigned int *total_flags, int mc_count,
1994 struct dev_addr_list *mc_list)
1995{
1996 struct at76_priv *priv = hw->priv;
1997 int flags;
1998
1999 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2000 "total_flags=0x%08x mc_count=%d",
2001 __func__, changed_flags, *total_flags, mc_count);
2002
2003 flags = changed_flags & AT76_SUPPORTED_FILTERS;
2004 *total_flags = AT76_SUPPORTED_FILTERS;
2005
deda862e
JA		 2006 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2007 if (priv->device_unplugged)
2008 return;
2009
1264b951
KV		 2010 /* FIXME: access to priv->promisc should be protected with
2011 * priv->mtx, but it's impossible because this function needs to be
2012 * atomic */
2013
2014 if (flags && !priv->promisc) {
2015 /* mac80211 wants us to enable promiscuous mode */
2016 priv->promisc = 1;
2017 } else if (!flags && priv->promisc) {
2018 /* we need to disable promiscuous mode */
2019 priv->promisc = 0;
2020 } else
2021 return;
2022
2023 queue_work(hw->workqueue, &priv->work_set_promisc);
2024}
2025
2026static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2027 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2028 struct ieee80211_key_conf *key)
2029{
2030 struct at76_priv *priv = hw->priv;
2031
2032 int i;
2033
2034 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2035 "key->keylen %d",
2036 __func__, cmd, key->alg, key->keyidx, key->keylen);
2037
2038 if (key->alg != ALG_WEP)
2039 return -EOPNOTSUPP;
2040
2041 key->hw_key_idx = key->keyidx;
2042
2043 mutex_lock(&priv->mtx);
2044
2045 switch (cmd) {
2046 case SET_KEY:
2047 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2048 priv->wep_keys_len[key->keyidx] = key->keylen;
2049
2050 /* FIXME: find out how to do this properly */
2051 priv->wep_key_id = key->keyidx;
2052
2053 break;
2054 case DISABLE_KEY:
2055 default:
2056 priv->wep_keys_len[key->keyidx] = 0;
2057 break;
2058 }
2059
2060 priv->wep_enabled = 0;
2061
2062 for (i = 0; i < WEP_KEYS; i++) {
2063 if (priv->wep_keys_len[i] != 0)
2064 priv->wep_enabled = 1;
2065 }
2066
2067 at76_startup_device(priv);
2068
2069 mutex_unlock(&priv->mtx);
2070
2071 return 0;
2072}
2073
2074static const struct ieee80211_ops at76_ops = {
2075 .tx = at76_mac80211_tx,
2076 .add_interface = at76_add_interface,
2077 .remove_interface = at76_remove_interface,
2078 .config = at76_config,
2079 .config_interface = at76_config_interface,
2080 .configure_filter = at76_configure_filter,
2081 .start = at76_mac80211_start,
2082 .stop = at76_mac80211_stop,
2083 .hw_scan = at76_hw_scan,
2084 .set_key = at76_set_key,
2085};
2086
2087/* Allocate network device and initialize private data */
2088static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2089{
2090 struct ieee80211_hw *hw;
2091 struct at76_priv *priv;
2092
2093 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2094 if (!hw) {
2095 printk(KERN_ERR DRIVER_NAME ": could not register"
2096 " ieee80211_hw\n");
2097 return NULL;
2098 }
2099
2100 priv = hw->priv;
2101 priv->hw = hw;
2102
2103 priv->udev = udev;
2104
2105 mutex_init(&priv->mtx);
2106 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2107 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2108 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2109
deda862e 2110 tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
1264b951
KV		 2111
2112 priv->pm_mode = AT76_PM_OFF;
2113 priv->pm_period = 0;
2114
2115 /* unit us */
2116 priv->hw->channel_change_time = 100000;
2117
2118 return priv;
2119}
2120
2121static int at76_alloc_urbs(struct at76_priv *priv,
2122 struct usb_interface *interface)
2123{
2124 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2125 int i;
2126 int buffer_size;
2127 struct usb_host_interface *iface_desc;
2128
2129 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2130
2131 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2132 interface->altsetting[0].desc.bNumEndpoints);
2133
2134 ep_in = NULL;
2135 ep_out = NULL;
2136 iface_desc = interface->cur_altsetting;
2137 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2138 endpoint = &iface_desc->endpoint[i].desc;
2139
2140 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2141 __func__, i, endpoint->bEndpointAddress,
2142 endpoint->bmAttributes);
2143
2144 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2145 ep_in = endpoint;
2146
2147 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2148 ep_out = endpoint;
2149 }
2150
2151 if (!ep_in || !ep_out) {
2152 dev_printk(KERN_ERR, &interface->dev,
2153 "bulk endpoints missing\n");
2154 return -ENXIO;
2155 }
2156
2157 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2158 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2159
2160 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2161 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2162 if (!priv->rx_urb || !priv->tx_urb) {
2163 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2164 return -ENOMEM;
2165 }
2166
2167 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2168 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2169 if (!priv->bulk_out_buffer) {
2170 dev_printk(KERN_ERR, &interface->dev,
2171 "cannot allocate output buffer\n");
2172 return -ENOMEM;
2173 }
2174
2175 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2176
2177 return 0;
2178}
2179
2180static struct ieee80211_rate at76_rates[] = {
2181 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2182 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2183 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2184 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2185};
2186
2187static struct ieee80211_channel at76_channels[] = {
2188 { .center_freq = 2412, .hw_value = 1 },
2189 { .center_freq = 2417, .hw_value = 2 },
2190 { .center_freq = 2422, .hw_value = 3 },
2191 { .center_freq = 2427, .hw_value = 4 },
2192 { .center_freq = 2432, .hw_value = 5 },
2193 { .center_freq = 2437, .hw_value = 6 },
2194 { .center_freq = 2442, .hw_value = 7 },
2195 { .center_freq = 2447, .hw_value = 8 },
2196 { .center_freq = 2452, .hw_value = 9 },
2197 { .center_freq = 2457, .hw_value = 10 },
2198 { .center_freq = 2462, .hw_value = 11 },
2199 { .center_freq = 2467, .hw_value = 12 },
2200 { .center_freq = 2472, .hw_value = 13 },
2201 { .center_freq = 2484, .hw_value = 14 }
2202};
2203
2204static struct ieee80211_supported_band at76_supported_band = {
2205 .channels = at76_channels,
2206 .n_channels = ARRAY_SIZE(at76_channels),
2207 .bitrates = at76_rates,
2208 .n_bitrates = ARRAY_SIZE(at76_rates),
2209};
2210
2211/* Register network device and initialize the hardware */
2212static int at76_init_new_device(struct at76_priv *priv,
2213 struct usb_interface *interface)
2214{
2215 int ret;
2216
2217 /* set up the endpoint information */
2218 /* check out the endpoints */
2219
2220 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2221 interface->cur_altsetting->desc.bNumEndpoints);
2222
2223 ret = at76_alloc_urbs(priv, interface);
2224 if (ret < 0)
2225 goto exit;
2226
2227 /* MAC address */
2228 ret = at76_get_hw_config(priv);
2229 if (ret < 0) {
2230 dev_printk(KERN_ERR, &interface->dev,
2231 "cannot get MAC address\n");
2232 goto exit;
2233 }
2234
2235 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2236
2237 priv->channel = DEF_CHANNEL;
2238 priv->iw_mode = IW_MODE_INFRA;
2239 priv->rts_threshold = DEF_RTS_THRESHOLD;
2240 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2241 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2242 priv->txrate = TX_RATE_AUTO;
2243 priv->preamble_type = PREAMBLE_TYPE_LONG;
2244 priv->beacon_period = 100;
2245 priv->auth_mode = WLAN_AUTH_OPEN;
2246 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2247 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2248 priv->scan_mode = SCAN_TYPE_ACTIVE;
deda862e 2249 priv->device_unplugged = 0;
1264b951
KV		 2250
2251 /* mac80211 initialisation */
19e8bc7f 2252 priv->hw->wiphy->max_scan_ssids = 1;
1264b951
KV		 2253 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2254 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2255 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2256 IEEE80211_HW_SIGNAL_UNSPEC;
19e8bc7f 2257 priv->hw->max_signal = 100;
1264b951
KV		 2258
2259 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2260 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2261
2262 ret = ieee80211_register_hw(priv->hw);
2263 if (ret) {
2264 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2265 ret);
2266 goto exit;
2267 }
2268
2269 priv->mac80211_registered = 1;
2270
2271 printk(KERN_INFO "%s: USB %s, MAC %s, firmware %d.%d.%d-%d\n",
2272 wiphy_name(priv->hw->wiphy),
2a07954b 2273 dev_name(&interface->dev), mac2str(priv->mac_addr),
1264b951
KV		 2274 priv->fw_version.major, priv->fw_version.minor,
2275 priv->fw_version.patch, priv->fw_version.build);
2276 printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n",
2277 wiphy_name(priv->hw->wiphy),
2278 priv->regulatory_domain, priv->domain->name);
2279
2280exit:
2281 return ret;
2282}
2283
2284static void at76_delete_device(struct at76_priv *priv)
2285{
2286 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2287
2288 /* The device is gone, don't bother turning it off */
2289 priv->device_unplugged = 1;
2290
deda862e 2291 tasklet_kill(&priv->rx_tasklet);
1264b951 2292
deda862e 2293 if (priv->mac80211_registered) {
1cc198fe 2294 cancel_delayed_work(&priv->dwork_hw_scan);
deda862e
JA		 2295 flush_workqueue(priv->hw->workqueue);
2296 ieee80211_unregister_hw(priv->hw);
2297 }
1264b951
KV		 2298
2299 if (priv->tx_urb) {
2300 usb_kill_urb(priv->tx_urb);
2301 usb_free_urb(priv->tx_urb);
2302 }
2303 if (priv->rx_urb) {
2304 usb_kill_urb(priv->rx_urb);
2305 usb_free_urb(priv->rx_urb);
2306 }
2307
2308 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2309
deda862e
JA		 2310 kfree(priv->bulk_out_buffer);
2311
1cc198fe
JA		 2312 del_timer_sync(&ledtrig_tx_timer);
2313
1264b951
KV		 2314 if (priv->rx_skb)
2315 kfree_skb(priv->rx_skb);
2316
2317 usb_put_dev(priv->udev);
2318
2319 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2320 __func__);
2321 ieee80211_free_hw(priv->hw);
2322
2323 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2324}
2325
2326static int at76_probe(struct usb_interface *interface,
2327 const struct usb_device_id *id)
2328{
2329 int ret;
2330 struct at76_priv *priv;
2331 struct fwentry *fwe;
2332 struct usb_device *udev;
2333 int op_mode;
2334 int need_ext_fw = 0;
2335 struct mib_fw_version fwv;
2336 int board_type = (int)id->driver_info;
2337
2338 udev = usb_get_dev(interface_to_usbdev(interface));
2339
2340 /* Load firmware into kernel memory */
2341 fwe = at76_load_firmware(udev, board_type);
2342 if (!fwe) {
2343 ret = -ENOENT;
2344 goto error;
2345 }
2346
2347 op_mode = at76_get_op_mode(udev);
2348
2349 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2350
2351 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2352 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2353
2354 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2355 dev_printk(KERN_ERR, &interface->dev,
2356 "cannot handle a device in HW_CONFIG_MODE\n");
2357 ret = -EBUSY;
2358 goto error;
2359 }
2360
2361 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2362 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2363 /* download internal firmware part */
2364 dev_printk(KERN_DEBUG, &interface->dev,
2365 "downloading internal firmware\n");
2366 ret = at76_load_internal_fw(udev, fwe);
2367 if (ret < 0) {
2368 dev_printk(KERN_ERR, &interface->dev,
2369 "error %d downloading internal firmware\n",
2370 ret);
2371 goto error;
2372 }
2373 usb_put_dev(udev);
2374 return ret;
2375 }
2376
2377 /* Internal firmware already inside the device. Get firmware
2378 * version to test if external firmware is loaded.
2379 * This works only for newer firmware, e.g. the Intersil 0.90.x
2380 * says "control timeout on ep0in" and subsequent
2381 * at76_get_op_mode() fail too :-( */
2382
2383 /* if version >= 0.100.x.y or device with built-in flash we can
2384 * query the device for the fw version */
2385 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2386 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2387 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2388 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2389 need_ext_fw = 1;
2390 } else
2391 /* No way to check firmware version, reload to be sure */
2392 need_ext_fw = 1;
2393
2394 if (need_ext_fw) {
2395 dev_printk(KERN_DEBUG, &interface->dev,
2396 "downloading external firmware\n");
2397
2398 ret = at76_load_external_fw(udev, fwe);
2399 if (ret)
2400 goto error;
2401
2402 /* Re-check firmware version */
2403 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2404 if (ret < 0) {
2405 dev_printk(KERN_ERR, &interface->dev,
2406 "error %d getting firmware version\n", ret);
2407 goto error;
2408 }
2409 }
2410
2411 priv = at76_alloc_new_device(udev);
2412 if (!priv) {
2413 ret = -ENOMEM;
2414 goto error;
2415 }
2416
2417 usb_set_intfdata(interface, priv);
2418
2419 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2420 priv->board_type = board_type;
2421
2422 ret = at76_init_new_device(priv, interface);
2423 if (ret < 0)
2424 at76_delete_device(priv);
2425
2426 return ret;
2427
2428error:
2429 usb_put_dev(udev);
2430 return ret;
2431}
2432
2433static void at76_disconnect(struct usb_interface *interface)
2434{
2435 struct at76_priv *priv;
2436
2437 priv = usb_get_intfdata(interface);
2438 usb_set_intfdata(interface, NULL);
2439
2440 /* Disconnect after loading internal firmware */
2441 if (!priv)
2442 return;
2443
2444 printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
2445 at76_delete_device(priv);
2446 dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2447}
2448
2449/* Structure for registering this driver with the USB subsystem */
2450static struct usb_driver at76_driver = {
2451 .name = DRIVER_NAME,
2452 .probe = at76_probe,
2453 .disconnect = at76_disconnect,
2454 .id_table = dev_table,
2455};
2456
2457static int __init at76_mod_init(void)
2458{
2459 int result;
2460
2461 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2462
2463 mutex_init(&fw_mutex);
2464
2465 /* register this driver with the USB subsystem */
2466 result = usb_register(&at76_driver);
2467 if (result < 0)
2468 printk(KERN_ERR DRIVER_NAME
2469 ": usb_register failed (status %d)\n", result);
2470
2471 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2472 return result;
2473}
2474
2475static void __exit at76_mod_exit(void)
2476{
2477 int i;
2478
2479 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2480 usb_deregister(&at76_driver);
2481 for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2482 if (firmwares[i].fw)
2483 release_firmware(firmwares[i].fw);
2484 }
2485 led_trigger_unregister_simple(ledtrig_tx);
2486}
2487
2ce4f9d8 2488module_param_named(debug, at76_debug, uint, 0600);
1264b951
KV		 2489MODULE_PARM_DESC(debug, "Debugging level");
2490
2491module_init(at76_mod_init);
2492module_exit(at76_mod_exit);
2493
2494MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2495MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2496MODULE_AUTHOR("Alex <alex@foogod.com>");
2497MODULE_AUTHOR("Nick Jones");
2498MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2499MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2500MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2501MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2502MODULE_DESCRIPTION(DRIVER_DESC);
2503MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)