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Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / at76c50x-usb.c
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 * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This file is part of the Berlios driver for WLAN USB devices based on the
18 * Atmel AT76C503A/505/505A.
19 *
20 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
21 *
22 * TODO list is at the wiki:
23 *
24 * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
25 *
26 */
27
28 #include <linux/init.h>
29 #include <linux/kernel.h>
30 #include <linux/sched.h>
31 #include <linux/errno.h>
32 #include <linux/slab.h>
33 #include <linux/module.h>
34 #include <linux/spinlock.h>
35 #include <linux/list.h>
36 #include <linux/usb.h>
37 #include <linux/netdevice.h>
38 #include <linux/if_arp.h>
39 #include <linux/etherdevice.h>
40 #include <linux/ethtool.h>
41 #include <linux/wireless.h>
42 #include <net/iw_handler.h>
43 #include <net/ieee80211_radiotap.h>
44 #include <linux/firmware.h>
45 #include <linux/leds.h>
46 #include <net/mac80211.h>
47
48 #include "at76c50x-usb.h"
49
50 /* Version information */
51 #define DRIVER_NAME "at76c50x-usb"
52 #define DRIVER_VERSION "0.17"
53 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
54
55 /* at76_debug bits */
56 #define DBG_PROGRESS 0x00000001 /* authentication/accociation */
57 #define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */
58 #define DBG_IOCTL 0x00000004 /* ioctl calls / settings */
59 #define DBG_MAC_STATE 0x00000008 /* MAC state transitions */
60 #define DBG_TX_DATA 0x00000010 /* tx header */
61 #define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */
62 #define DBG_TX_MGMT 0x00000040 /* tx management */
63 #define DBG_RX_DATA 0x00000080 /* rx data header */
64 #define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */
65 #define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */
66 #define DBG_RX_BEACON 0x00000400 /* rx beacon */
67 #define DBG_RX_CTRL 0x00000800 /* rx control */
68 #define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */
69 #define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */
70 #define DBG_DEVSTART 0x00004000 /* fw download, device start */
71 #define DBG_URB 0x00008000 /* rx urb status, ... */
72 #define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */
73 #define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */
74 #define DBG_PM 0x00040000 /* power management settings */
75 #define DBG_BSS_MATCH 0x00080000 /* BSS match failures */
76 #define DBG_PARAMS 0x00100000 /* show configured parameters */
77 #define DBG_WAIT_COMPLETE 0x00200000 /* command completion */
78 #define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */
79 #define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */
80 #define DBG_MONITOR_MODE 0x01000000 /* monitor mode */
81 #define DBG_MIB 0x02000000 /* dump all MIBs on startup */
82 #define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */
83 #define DBG_WE_EVENTS 0x08000000 /* dump wireless events */
84 #define DBG_FW 0x10000000 /* firmware download */
85 #define DBG_DFU 0x20000000 /* device firmware upgrade */
86 #define DBG_CMD 0x40000000
87 #define DBG_MAC80211 0x80000000
88
89 #define DBG_DEFAULTS 0
90
91 /* Use our own dbg macro */
92 #define at76_dbg(bits, format, arg...) \
93 do { \
94 if (at76_debug & (bits)) \
95 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##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", ##arg); \
102 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
103 } \
104 } while (0)
105
106 static uint at76_debug = DBG_DEFAULTS;
107
108 /* Protect against concurrent firmware loading and parsing */
109 static struct mutex fw_mutex;
110
111 static struct fwentry firmwares[] = {
112 [0] = { "" },
113 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
114 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
115 [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
116 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
117 [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
118 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
119 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
120 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
121 };
122 MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
123 MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
124 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
125 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
126 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
127 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
128 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
129 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
130
131 #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
132
133 static struct usb_device_id dev_table[] = {
134 /*
135 * at76c503-i3861
136 */
137 /* Generic AT76C503/3861 device */
138 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
139 /* Linksys WUSB11 v2.1/v2.6 */
140 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
141 /* Netgear MA101 rev. A */
142 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
143 /* Tekram U300C / Allnet ALL0193 */
144 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
145 /* HP HN210W J7801A */
146 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
147 /* Sitecom/Z-Com/Zyxel M4Y-750 */
148 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
149 /* Dynalink/Askey WLL013 (intersil) */
150 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
151 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
152 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
153 /* BenQ AWL300 */
154 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
155 /* Addtron AWU-120, Compex WLU11 */
156 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
157 /* Intel AP310 AnyPoint II USB */
158 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
159 /* Dynalink L11U */
160 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
161 /* Arescom WL-210, FCC id 07J-GL2411USB */
162 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
163 /* I-O DATA WN-B11/USB */
164 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
165 /* BT Voyager 1010 */
166 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
167 /*
168 * at76c503-i3863
169 */
170 /* Generic AT76C503/3863 device */
171 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
172 /* Samsung SWL-2100U */
173 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
174 /*
175 * at76c503-rfmd
176 */
177 /* Generic AT76C503/RFMD device */
178 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
179 /* Dynalink/Askey WLL013 (rfmd) */
180 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
181 /* Linksys WUSB11 v2.6 */
182 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
183 /* Network Everywhere NWU11B */
184 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
185 /* Netgear MA101 rev. B */
186 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
187 /* D-Link DWL-120 rev. E */
188 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
189 /* Actiontec 802UAT1, HWU01150-01UK */
190 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
191 /* AirVast W-Buddie WN210 */
192 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
193 /* Dick Smith Electronics XH1153 802.11b USB adapter */
194 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
195 /* CNet CNUSB611 */
196 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
197 /* FiberLine FL-WL200U */
198 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
199 /* BenQ AWL400 USB stick */
200 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
201 /* 3Com 3CRSHEW696 */
202 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
203 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
204 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
205 /* Belkin F5D6050, version 2 */
206 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
207 /* iBlitzz, BWU613 (not *B or *SB) */
208 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
209 /* Gigabyte GN-WLBM101 */
210 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
211 /* Planex GW-US11S */
212 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
213 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
214 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
215 /* Corega Wireless LAN USB-11 mini */
216 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
217 /* Corega Wireless LAN USB-11 mini2 */
218 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
219 /* Uniden PCW100 */
220 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
221 /*
222 * at76c503-rfmd-acc
223 */
224 /* SMC2664W */
225 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
226 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
227 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
228 /*
229 * at76c505-rfmd
230 */
231 /* Generic AT76C505/RFMD */
232 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
233 /*
234 * at76c505-rfmd2958
235 */
236 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
237 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
238 /* Fiberline FL-WL240U */
239 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
240 /* CNet CNUSB-611G */
241 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
242 /* Linksys WUSB11 v2.8 */
243 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
244 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
245 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
246 /* Corega WLAN USB Stick 11 */
247 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
248 /* Microstar MSI Box MS6978 */
249 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
250 /*
251 * at76c505a-rfmd2958
252 */
253 /* Generic AT76C505A device */
254 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
255 /* Generic AT76C505AS device */
256 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
257 /* Siemens Gigaset USB WLAN Adapter 11 */
258 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
259 /* OQO Model 01+ Internal Wi-Fi */
260 { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
261 /*
262 * at76c505amx-rfmd
263 */
264 /* Generic AT76C505AMX device */
265 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
266 { }
267 };
268
269 MODULE_DEVICE_TABLE(usb, dev_table);
270
271 /* Supported rates of this hardware, bit 7 marks basic rates */
272 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
273
274 static const char *const preambles[] = { "long", "short", "auto" };
275
276 /* Firmware download */
277 /* DFU states */
278 #define STATE_IDLE 0x00
279 #define STATE_DETACH 0x01
280 #define STATE_DFU_IDLE 0x02
281 #define STATE_DFU_DOWNLOAD_SYNC 0x03
282 #define STATE_DFU_DOWNLOAD_BUSY 0x04
283 #define STATE_DFU_DOWNLOAD_IDLE 0x05
284 #define STATE_DFU_MANIFEST_SYNC 0x06
285 #define STATE_DFU_MANIFEST 0x07
286 #define STATE_DFU_MANIFEST_WAIT_RESET 0x08
287 #define STATE_DFU_UPLOAD_IDLE 0x09
288 #define STATE_DFU_ERROR 0x0a
289
290 /* DFU commands */
291 #define DFU_DETACH 0
292 #define DFU_DNLOAD 1
293 #define DFU_UPLOAD 2
294 #define DFU_GETSTATUS 3
295 #define DFU_CLRSTATUS 4
296 #define DFU_GETSTATE 5
297 #define DFU_ABORT 6
298
299 #define FW_BLOCK_SIZE 1024
300
301 struct dfu_status {
302 unsigned char status;
303 unsigned char poll_timeout[3];
304 unsigned char state;
305 unsigned char string;
306 } __packed;
307
308 static inline int at76_is_intersil(enum board_type board)
309 {
310 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
311 }
312
313 static inline int at76_is_503rfmd(enum board_type board)
314 {
315 return (board == BOARD_503 || board == BOARD_503_ACC);
316 }
317
318 static inline int at76_is_505a(enum board_type board)
319 {
320 return (board == BOARD_505A || board == BOARD_505AMX);
321 }
322
323 /* Load a block of the first (internal) part of the firmware */
324 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
325 void *block, int size)
326 {
327 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
328 USB_TYPE_CLASS | USB_DIR_OUT |
329 USB_RECIP_INTERFACE, blockno, 0, block, size,
330 USB_CTRL_GET_TIMEOUT);
331 }
332
333 static int at76_dfu_get_status(struct usb_device *udev,
334 struct dfu_status *status)
335 {
336 int ret;
337
338 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
339 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
340 0, 0, status, sizeof(struct dfu_status),
341 USB_CTRL_GET_TIMEOUT);
342 return ret;
343 }
344
345 static int at76_dfu_get_state(struct usb_device *udev, u8 *state)
346 {
347 int ret;
348
349 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
350 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
351 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
352 return ret;
353 }
354
355 /* Convert timeout from the DFU status to jiffies */
356 static inline unsigned long at76_get_timeout(struct dfu_status *s)
357 {
358 return msecs_to_jiffies((s->poll_timeout[2] << 16)
359 | (s->poll_timeout[1] << 8)
360 | (s->poll_timeout[0]));
361 }
362
363 /* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
364 * its value in jiffies in the MANIFEST_SYNC state. */
365 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
366 int manifest_sync_timeout)
367 {
368 u8 *block;
369 struct dfu_status dfu_stat_buf;
370 int ret = 0;
371 int need_dfu_state = 1;
372 int is_done = 0;
373 u8 dfu_state = 0;
374 u32 dfu_timeout = 0;
375 int bsize = 0;
376 int blockno = 0;
377
378 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
379 manifest_sync_timeout);
380
381 if (!size) {
382 dev_err(&udev->dev, "FW buffer length invalid!\n");
383 return -EINVAL;
384 }
385
386 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
387 if (!block)
388 return -ENOMEM;
389
390 do {
391 if (need_dfu_state) {
392 ret = at76_dfu_get_state(udev, &dfu_state);
393 if (ret < 0) {
394 dev_err(&udev->dev,
395 "cannot get DFU state: %d\n", ret);
396 goto exit;
397 }
398 need_dfu_state = 0;
399 }
400
401 switch (dfu_state) {
402 case STATE_DFU_DOWNLOAD_SYNC:
403 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
404 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
405 if (ret >= 0) {
406 dfu_state = dfu_stat_buf.state;
407 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
408 need_dfu_state = 0;
409 } else
410 dev_err(&udev->dev,
411 "at76_dfu_get_status returned %d\n",
412 ret);
413 break;
414
415 case STATE_DFU_DOWNLOAD_BUSY:
416 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
417 need_dfu_state = 1;
418
419 at76_dbg(DBG_DFU, "DFU: Resetting device");
420 schedule_timeout_interruptible(dfu_timeout);
421 break;
422
423 case STATE_DFU_DOWNLOAD_IDLE:
424 at76_dbg(DBG_DFU, "DOWNLOAD...");
425 /* fall through */
426 case STATE_DFU_IDLE:
427 at76_dbg(DBG_DFU, "DFU IDLE");
428
429 bsize = min_t(int, size, FW_BLOCK_SIZE);
430 memcpy(block, buf, bsize);
431 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
432 "bsize = %4d, blockno = %2d", size, bsize,
433 blockno);
434 ret =
435 at76_load_int_fw_block(udev, blockno, block, bsize);
436 buf += bsize;
437 size -= bsize;
438 blockno++;
439
440 if (ret != bsize)
441 dev_err(&udev->dev,
442 "at76_load_int_fw_block returned %d\n",
443 ret);
444 need_dfu_state = 1;
445 break;
446
447 case STATE_DFU_MANIFEST_SYNC:
448 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
449
450 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
451 if (ret < 0)
452 break;
453
454 dfu_state = dfu_stat_buf.state;
455 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
456 need_dfu_state = 0;
457
458 /* override the timeout from the status response,
459 needed for AT76C505A */
460 if (manifest_sync_timeout > 0)
461 dfu_timeout = manifest_sync_timeout;
462
463 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
464 schedule_timeout_interruptible(dfu_timeout);
465 break;
466
467 case STATE_DFU_MANIFEST:
468 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
469 is_done = 1;
470 break;
471
472 case STATE_DFU_MANIFEST_WAIT_RESET:
473 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
474 is_done = 1;
475 break;
476
477 case STATE_DFU_UPLOAD_IDLE:
478 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
479 break;
480
481 case STATE_DFU_ERROR:
482 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
483 ret = -EPIPE;
484 break;
485
486 default:
487 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
488 ret = -EINVAL;
489 break;
490 }
491 } while (!is_done && (ret >= 0));
492
493 exit:
494 kfree(block);
495 if (ret >= 0)
496 ret = 0;
497
498 return ret;
499 }
500
501 /* LED trigger */
502 static int tx_activity;
503 static void at76_ledtrig_tx_timerfunc(unsigned long data);
504 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
505 DEFINE_LED_TRIGGER(ledtrig_tx);
506
507 static void at76_ledtrig_tx_timerfunc(unsigned long data)
508 {
509 static int tx_lastactivity;
510
511 if (tx_lastactivity != tx_activity) {
512 tx_lastactivity = tx_activity;
513 led_trigger_event(ledtrig_tx, LED_FULL);
514 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
515 } else
516 led_trigger_event(ledtrig_tx, LED_OFF);
517 }
518
519 static void at76_ledtrig_tx_activity(void)
520 {
521 tx_activity++;
522 if (!timer_pending(&ledtrig_tx_timer))
523 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
524 }
525
526 static int at76_remap(struct usb_device *udev)
527 {
528 int ret;
529 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
530 USB_TYPE_VENDOR | USB_DIR_OUT |
531 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
532 USB_CTRL_GET_TIMEOUT);
533 if (ret < 0)
534 return ret;
535 return 0;
536 }
537
538 static int at76_get_op_mode(struct usb_device *udev)
539 {
540 int ret;
541 u8 saved;
542 u8 *op_mode;
543
544 op_mode = kmalloc(1, GFP_NOIO);
545 if (!op_mode)
546 return -ENOMEM;
547 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
548 USB_TYPE_VENDOR | USB_DIR_IN |
549 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
550 USB_CTRL_GET_TIMEOUT);
551 saved = *op_mode;
552 kfree(op_mode);
553
554 if (ret < 0)
555 return ret;
556 else if (ret < 1)
557 return -EIO;
558 else
559 return saved;
560 }
561
562 /* Load a block of the second ("external") part of the firmware */
563 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
564 void *block, int size)
565 {
566 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
567 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
568 0x0802, blockno, block, size,
569 USB_CTRL_GET_TIMEOUT);
570 }
571
572 static inline int at76_get_hw_cfg(struct usb_device *udev,
573 union at76_hwcfg *buf, int buf_size)
574 {
575 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
576 USB_TYPE_VENDOR | USB_DIR_IN |
577 USB_RECIP_INTERFACE, 0x0a02, 0,
578 buf, buf_size, USB_CTRL_GET_TIMEOUT);
579 }
580
581 /* Intersil boards use a different "value" for GetHWConfig requests */
582 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
583 union at76_hwcfg *buf, int buf_size)
584 {
585 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
586 USB_TYPE_VENDOR | USB_DIR_IN |
587 USB_RECIP_INTERFACE, 0x0902, 0,
588 buf, buf_size, USB_CTRL_GET_TIMEOUT);
589 }
590
591 /* Get the hardware configuration for the adapter and put it to the appropriate
592 * fields of 'priv' (the GetHWConfig request and interpretation of the result
593 * depends on the board type) */
594 static int at76_get_hw_config(struct at76_priv *priv)
595 {
596 int ret;
597 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
598
599 if (!hwcfg)
600 return -ENOMEM;
601
602 if (at76_is_intersil(priv->board_type)) {
603 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
604 sizeof(hwcfg->i));
605 if (ret < 0)
606 goto exit;
607 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
608 priv->regulatory_domain = hwcfg->i.regulatory_domain;
609 } else if (at76_is_503rfmd(priv->board_type)) {
610 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
611 if (ret < 0)
612 goto exit;
613 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
614 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
615 } else {
616 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
617 if (ret < 0)
618 goto exit;
619 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
620 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
621 }
622
623 exit:
624 kfree(hwcfg);
625 if (ret < 0)
626 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",
627 ret);
628
629 return ret;
630 }
631
632 static struct reg_domain const *at76_get_reg_domain(u16 code)
633 {
634 int i;
635 static struct reg_domain const fd_tab[] = {
636 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */
637 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
638 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */
639 { 0x31, "Spain", 0x600 }, /* ch 10-11 */
640 { 0x32, "France", 0x1e00 }, /* ch 10-13 */
641 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */
642 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */
643 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */
644 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */
645 };
646
647 /* Last entry is fallback for unknown domain code */
648 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
649 if (code == fd_tab[i].code)
650 break;
651
652 return &fd_tab[i];
653 }
654
655 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
656 int buf_size)
657 {
658 int ret;
659
660 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
661 USB_TYPE_VENDOR | USB_DIR_IN |
662 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
663 USB_CTRL_GET_TIMEOUT);
664 if (ret >= 0 && ret != buf_size)
665 return -EIO;
666 return ret;
667 }
668
669 /* Return positive number for status, negative for an error */
670 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
671 {
672 u8 *stat_buf;
673 int ret;
674
675 stat_buf = kmalloc(40, GFP_NOIO);
676 if (!stat_buf)
677 return -ENOMEM;
678
679 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
680 USB_TYPE_VENDOR | USB_DIR_IN |
681 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
682 40, USB_CTRL_GET_TIMEOUT);
683 if (ret >= 0)
684 ret = stat_buf[5];
685 kfree(stat_buf);
686
687 return ret;
688 }
689
690 #define MAKE_CMD_CASE(c) case (c): return #c
691 static const char *at76_get_cmd_string(u8 cmd_status)
692 {
693 switch (cmd_status) {
694 MAKE_CMD_CASE(CMD_SET_MIB);
695 MAKE_CMD_CASE(CMD_GET_MIB);
696 MAKE_CMD_CASE(CMD_SCAN);
697 MAKE_CMD_CASE(CMD_JOIN);
698 MAKE_CMD_CASE(CMD_START_IBSS);
699 MAKE_CMD_CASE(CMD_RADIO_ON);
700 MAKE_CMD_CASE(CMD_RADIO_OFF);
701 MAKE_CMD_CASE(CMD_STARTUP);
702 }
703
704 return "UNKNOWN";
705 }
706
707 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
708 int buf_size)
709 {
710 int ret;
711 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
712 buf_size, GFP_KERNEL);
713
714 if (!cmd_buf)
715 return -ENOMEM;
716
717 cmd_buf->cmd = cmd;
718 cmd_buf->reserved = 0;
719 cmd_buf->size = cpu_to_le16(buf_size);
720 memcpy(cmd_buf->data, buf, buf_size);
721
722 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
723 "issuing command %s (0x%02x)",
724 at76_get_cmd_string(cmd), cmd);
725
726 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
727 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
728 0, 0, cmd_buf,
729 sizeof(struct at76_command) + buf_size,
730 USB_CTRL_GET_TIMEOUT);
731 kfree(cmd_buf);
732 return ret;
733 }
734
735 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
736 static const char *at76_get_cmd_status_string(u8 cmd_status)
737 {
738 switch (cmd_status) {
739 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
740 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
741 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
742 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
743 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
744 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
745 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
746 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
747 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
748 }
749
750 return "UNKNOWN";
751 }
752
753 /* Wait until the command is completed */
754 static int at76_wait_completion(struct at76_priv *priv, int cmd)
755 {
756 int status = 0;
757 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
758
759 do {
760 status = at76_get_cmd_status(priv->udev, cmd);
761 if (status < 0) {
762 wiphy_err(priv->hw->wiphy,
763 "at76_get_cmd_status failed: %d\n",
764 status);
765 break;
766 }
767
768 at76_dbg(DBG_WAIT_COMPLETE,
769 "%s: Waiting on cmd %d, status = %d (%s)",
770 wiphy_name(priv->hw->wiphy), cmd, status,
771 at76_get_cmd_status_string(status));
772
773 if (status != CMD_STATUS_IN_PROGRESS
774 && status != CMD_STATUS_IDLE)
775 break;
776
777 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
778 if (time_after(jiffies, timeout)) {
779 wiphy_err(priv->hw->wiphy,
780 "completion timeout for command %d\n", cmd);
781 status = -ETIMEDOUT;
782 break;
783 }
784 } while (1);
785
786 return status;
787 }
788
789 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
790 {
791 int ret;
792
793 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
794 offsetof(struct set_mib_buffer,
795 data) + buf->size);
796 if (ret < 0)
797 return ret;
798
799 ret = at76_wait_completion(priv, CMD_SET_MIB);
800 if (ret != CMD_STATUS_COMPLETE) {
801 wiphy_info(priv->hw->wiphy,
802 "set_mib: at76_wait_completion failed with %d\n",
803 ret);
804 ret = -EIO;
805 }
806
807 return ret;
808 }
809
810 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
811 static int at76_set_radio(struct at76_priv *priv, int enable)
812 {
813 int ret;
814 int cmd;
815
816 if (priv->radio_on == enable)
817 return 0;
818
819 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
820
821 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
822 if (ret < 0)
823 wiphy_err(priv->hw->wiphy,
824 "at76_set_card_command(%d) failed: %d\n", cmd, ret);
825 else
826 ret = 1;
827
828 priv->radio_on = enable;
829 return ret;
830 }
831
832 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
833 static int at76_set_pm_mode(struct at76_priv *priv)
834 {
835 int ret = 0;
836
837 priv->mib_buf.type = MIB_MAC_MGMT;
838 priv->mib_buf.size = 1;
839 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
840 priv->mib_buf.data.byte = priv->pm_mode;
841
842 ret = at76_set_mib(priv, &priv->mib_buf);
843 if (ret < 0)
844 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
845 ret);
846
847 return ret;
848 }
849
850 static int at76_set_preamble(struct at76_priv *priv, u8 type)
851 {
852 int ret = 0;
853
854 priv->mib_buf.type = MIB_LOCAL;
855 priv->mib_buf.size = 1;
856 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
857 priv->mib_buf.data.byte = type;
858
859 ret = at76_set_mib(priv, &priv->mib_buf);
860 if (ret < 0)
861 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
862 ret);
863
864 return ret;
865 }
866
867 static int at76_set_frag(struct at76_priv *priv, u16 size)
868 {
869 int ret = 0;
870
871 priv->mib_buf.type = MIB_MAC;
872 priv->mib_buf.size = 2;
873 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
874 priv->mib_buf.data.word = cpu_to_le16(size);
875
876 ret = at76_set_mib(priv, &priv->mib_buf);
877 if (ret < 0)
878 wiphy_err(priv->hw->wiphy,
879 "set_mib (frag threshold) failed: %d\n", ret);
880
881 return ret;
882 }
883
884 static int at76_set_rts(struct at76_priv *priv, u16 size)
885 {
886 int ret = 0;
887
888 priv->mib_buf.type = MIB_MAC;
889 priv->mib_buf.size = 2;
890 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
891 priv->mib_buf.data.word = cpu_to_le16(size);
892
893 ret = at76_set_mib(priv, &priv->mib_buf);
894 if (ret < 0)
895 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
896
897 return ret;
898 }
899
900 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
901 {
902 int ret = 0;
903
904 priv->mib_buf.type = MIB_LOCAL;
905 priv->mib_buf.size = 1;
906 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
907 priv->mib_buf.data.byte = onoff;
908
909 ret = at76_set_mib(priv, &priv->mib_buf);
910 if (ret < 0)
911 wiphy_err(priv->hw->wiphy,
912 "set_mib (autorate fallback) failed: %d\n", ret);
913
914 return ret;
915 }
916
917 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
918 {
919 int i;
920 int ret;
921 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
922 GFP_KERNEL);
923
924 if (!m)
925 return;
926
927 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
928 sizeof(struct mib_mac_addr));
929 if (ret < 0) {
930 wiphy_err(priv->hw->wiphy,
931 "at76_get_mib (MAC_ADDR) failed: %d\n", ret);
932 goto exit;
933 }
934
935 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
936 wiphy_name(priv->hw->wiphy),
937 m->mac_addr, m->res[0], m->res[1]);
938 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
939 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
940 "status %d", wiphy_name(priv->hw->wiphy), i,
941 m->group_addr[i], m->group_addr_status[i]);
942 exit:
943 kfree(m);
944 }
945
946 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
947 {
948 int i;
949 int ret;
950 int key_len;
951 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
952
953 if (!m)
954 return;
955
956 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
957 sizeof(struct mib_mac_wep));
958 if (ret < 0) {
959 wiphy_err(priv->hw->wiphy,
960 "at76_get_mib (MAC_WEP) failed: %d\n", ret);
961 goto exit;
962 }
963
964 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
965 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
966 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
967 m->privacy_invoked, m->wep_default_key_id,
968 m->wep_key_mapping_len, m->exclude_unencrypted,
969 le32_to_cpu(m->wep_icv_error_count),
970 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
971 m->wep_default_key_id);
972
973 key_len = (m->encryption_level == 1) ?
974 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
975
976 for (i = 0; i < WEP_KEYS; i++)
977 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD",
978 wiphy_name(priv->hw->wiphy), i,
979 key_len, m->wep_default_keyvalue[i]);
980 exit:
981 kfree(m);
982 }
983
984 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
985 {
986 int ret;
987 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
988 GFP_KERNEL);
989
990 if (!m)
991 return;
992
993 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
994 sizeof(struct mib_mac_mgmt));
995 if (ret < 0) {
996 wiphy_err(priv->hw->wiphy,
997 "at76_get_mib (MAC_MGMT) failed: %d\n", ret);
998 goto exit;
999 }
1000
1001 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1002 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1003 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1004 "current_bssid %pM current_essid %*phD current_bss_type %d "
1005 "pm_mode %d ibss_change %d res %d "
1006 "multi_domain_capability_implemented %d "
1007 "international_roaming %d country_string %.3s",
1008 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1009 le16_to_cpu(m->CFP_max_duration),
1010 le16_to_cpu(m->medium_occupancy_limit),
1011 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1012 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1013 m->CFP_period, m->current_bssid,
1014 IW_ESSID_MAX_SIZE, m->current_essid,
1015 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1016 m->res, m->multi_domain_capability_implemented,
1017 m->multi_domain_capability_enabled, m->country_string);
1018 exit:
1019 kfree(m);
1020 }
1021
1022 static void at76_dump_mib_mac(struct at76_priv *priv)
1023 {
1024 int ret;
1025 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1026
1027 if (!m)
1028 return;
1029
1030 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1031 if (ret < 0) {
1032 wiphy_err(priv->hw->wiphy,
1033 "at76_get_mib (MAC) failed: %d\n", ret);
1034 goto exit;
1035 }
1036
1037 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1038 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1039 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1040 "scan_type %d scan_channel %d probe_delay %u "
1041 "min_channel_time %d max_channel_time %d listen_int %d "
1042 "desired_ssid %*phD desired_bssid %pM desired_bsstype %d",
1043 wiphy_name(priv->hw->wiphy),
1044 le32_to_cpu(m->max_tx_msdu_lifetime),
1045 le32_to_cpu(m->max_rx_lifetime),
1046 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1047 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1048 m->short_retry_time, m->long_retry_time, m->scan_type,
1049 m->scan_channel, le16_to_cpu(m->probe_delay),
1050 le16_to_cpu(m->min_channel_time),
1051 le16_to_cpu(m->max_channel_time),
1052 le16_to_cpu(m->listen_interval),
1053 IW_ESSID_MAX_SIZE, m->desired_ssid,
1054 m->desired_bssid, m->desired_bsstype);
1055 exit:
1056 kfree(m);
1057 }
1058
1059 static void at76_dump_mib_phy(struct at76_priv *priv)
1060 {
1061 int ret;
1062 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1063
1064 if (!m)
1065 return;
1066
1067 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1068 if (ret < 0) {
1069 wiphy_err(priv->hw->wiphy,
1070 "at76_get_mib (PHY) failed: %d\n", ret);
1071 goto exit;
1072 }
1073
1074 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1075 "sifs_time %d preamble_length %d plcp_header_length %d "
1076 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1077 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1078 "phy_type %d current_reg_domain %d",
1079 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1080 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1081 le16_to_cpu(m->preamble_length),
1082 le16_to_cpu(m->plcp_header_length),
1083 le16_to_cpu(m->mpdu_max_length),
1084 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1085 m->operation_rate_set[1], m->operation_rate_set[2],
1086 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1087 m->phy_type, m->current_reg_domain);
1088 exit:
1089 kfree(m);
1090 }
1091
1092 static void at76_dump_mib_local(struct at76_priv *priv)
1093 {
1094 int ret;
1095 struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL);
1096
1097 if (!m)
1098 return;
1099
1100 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m));
1101 if (ret < 0) {
1102 wiphy_err(priv->hw->wiphy,
1103 "at76_get_mib (LOCAL) failed: %d\n", ret);
1104 goto exit;
1105 }
1106
1107 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1108 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1109 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1110 m->beacon_enable,
1111 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1112 m->preamble_type);
1113 exit:
1114 kfree(m);
1115 }
1116
1117 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1118 {
1119 int ret;
1120 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1121
1122 if (!m)
1123 return;
1124
1125 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1126 sizeof(struct mib_mdomain));
1127 if (ret < 0) {
1128 wiphy_err(priv->hw->wiphy,
1129 "at76_get_mib (MDOMAIN) failed: %d\n", ret);
1130 goto exit;
1131 }
1132
1133 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD",
1134 wiphy_name(priv->hw->wiphy),
1135 (int)sizeof(m->channel_list), m->channel_list);
1136
1137 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD",
1138 wiphy_name(priv->hw->wiphy),
1139 (int)sizeof(m->tx_powerlevel), m->tx_powerlevel);
1140 exit:
1141 kfree(m);
1142 }
1143
1144 /* Enable monitor mode */
1145 static int at76_start_monitor(struct at76_priv *priv)
1146 {
1147 struct at76_req_scan scan;
1148 int ret;
1149
1150 memset(&scan, 0, sizeof(struct at76_req_scan));
1151 memset(scan.bssid, 0xff, ETH_ALEN);
1152
1153 scan.channel = priv->channel;
1154 scan.scan_type = SCAN_TYPE_PASSIVE;
1155 scan.international_scan = 0;
1156 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1157 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1158 scan.probe_delay = cpu_to_le16(0);
1159
1160 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1161 if (ret >= 0)
1162 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1163
1164 return ret;
1165 }
1166
1167 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1168 likely to compensate a flaw in the AT76C503A USB part ... */
1169 static inline int at76_calc_padding(int wlen)
1170 {
1171 /* add the USB TX header */
1172 wlen += AT76_TX_HDRLEN;
1173
1174 wlen = wlen % 64;
1175
1176 if (wlen < 50)
1177 return 50 - wlen;
1178
1179 if (wlen >= 61)
1180 return 64 + 50 - wlen;
1181
1182 return 0;
1183 }
1184
1185 static void at76_rx_callback(struct urb *urb)
1186 {
1187 struct at76_priv *priv = urb->context;
1188
1189 priv->rx_tasklet.data = (unsigned long)urb;
1190 tasklet_schedule(&priv->rx_tasklet);
1191 }
1192
1193 static int at76_submit_rx_urb(struct at76_priv *priv)
1194 {
1195 int ret;
1196 int size;
1197 struct sk_buff *skb = priv->rx_skb;
1198
1199 if (!priv->rx_urb) {
1200 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n",
1201 __func__);
1202 return -EFAULT;
1203 }
1204
1205 if (!skb) {
1206 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1207 if (!skb) {
1208 wiphy_err(priv->hw->wiphy,
1209 "cannot allocate rx skbuff\n");
1210 ret = -ENOMEM;
1211 goto exit;
1212 }
1213 priv->rx_skb = skb;
1214 } else {
1215 skb_push(skb, skb_headroom(skb));
1216 skb_trim(skb, 0);
1217 }
1218
1219 size = skb_tailroom(skb);
1220 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1221 skb_put(skb, size), size, at76_rx_callback, priv);
1222 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1223 if (ret < 0) {
1224 if (ret == -ENODEV)
1225 at76_dbg(DBG_DEVSTART,
1226 "usb_submit_urb returned -ENODEV");
1227 else
1228 wiphy_err(priv->hw->wiphy,
1229 "rx, usb_submit_urb failed: %d\n", ret);
1230 }
1231
1232 exit:
1233 if (ret < 0 && ret != -ENODEV)
1234 wiphy_err(priv->hw->wiphy,
1235 "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1236
1237 return ret;
1238 }
1239
1240 /* Download external firmware */
1241 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1242 {
1243 int ret;
1244 int op_mode;
1245 int blockno = 0;
1246 int bsize;
1247 u8 *block;
1248 u8 *buf = fwe->extfw;
1249 int size = fwe->extfw_size;
1250
1251 if (!buf || !size)
1252 return -ENOENT;
1253
1254 op_mode = at76_get_op_mode(udev);
1255 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1256
1257 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1258 dev_err(&udev->dev, "unexpected opmode %d\n", op_mode);
1259 return -EINVAL;
1260 }
1261
1262 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1263 if (!block)
1264 return -ENOMEM;
1265
1266 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1267
1268 /* for fw >= 0.100, the device needs an extra empty block */
1269 do {
1270 bsize = min_t(int, size, FW_BLOCK_SIZE);
1271 memcpy(block, buf, bsize);
1272 at76_dbg(DBG_DEVSTART,
1273 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1274 size, bsize, blockno);
1275 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1276 if (ret != bsize) {
1277 dev_err(&udev->dev,
1278 "loading %dth firmware block failed: %d\n",
1279 blockno, ret);
1280 goto exit;
1281 }
1282 buf += bsize;
1283 size -= bsize;
1284 blockno++;
1285 } while (bsize > 0);
1286
1287 if (at76_is_505a(fwe->board_type)) {
1288 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1289 schedule_timeout_interruptible(HZ / 5 + 1);
1290 }
1291
1292 exit:
1293 kfree(block);
1294 if (ret < 0)
1295 dev_err(&udev->dev,
1296 "downloading external firmware failed: %d\n", ret);
1297 return ret;
1298 }
1299
1300 /* Download internal firmware */
1301 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1302 {
1303 int ret;
1304 int need_remap = !at76_is_505a(fwe->board_type);
1305
1306 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1307 need_remap ? 0 : 2 * HZ);
1308
1309 if (ret < 0) {
1310 dev_err(&udev->dev,
1311 "downloading internal fw failed with %d\n", ret);
1312 goto exit;
1313 }
1314
1315 at76_dbg(DBG_DEVSTART, "sending REMAP");
1316
1317 /* no REMAP for 505A (see SF driver) */
1318 if (need_remap) {
1319 ret = at76_remap(udev);
1320 if (ret < 0) {
1321 dev_err(&udev->dev,
1322 "sending REMAP failed with %d\n", ret);
1323 goto exit;
1324 }
1325 }
1326
1327 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1328 schedule_timeout_interruptible(2 * HZ + 1);
1329 usb_reset_device(udev);
1330
1331 exit:
1332 return ret;
1333 }
1334
1335 static int at76_startup_device(struct at76_priv *priv)
1336 {
1337 struct at76_card_config *ccfg = &priv->card_config;
1338 int ret;
1339
1340 at76_dbg(DBG_PARAMS,
1341 "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d "
1342 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1343 priv->essid, IW_ESSID_MAX_SIZE, priv->essid,
1344 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1345 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1346 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1347 at76_dbg(DBG_PARAMS,
1348 "%s param: preamble %s rts %d retry %d frag %d "
1349 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1350 preambles[priv->preamble_type], priv->rts_threshold,
1351 priv->short_retry_limit, priv->frag_threshold,
1352 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1353 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1354 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1355 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1356 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1357 at76_dbg(DBG_PARAMS,
1358 "%s param: pm_mode %d pm_period %d auth_mode %s "
1359 "scan_times %d %d scan_mode %s",
1360 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1361 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1362 priv->scan_min_time, priv->scan_max_time,
1363 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1364
1365 memset(ccfg, 0, sizeof(struct at76_card_config));
1366 ccfg->promiscuous_mode = 0;
1367 ccfg->short_retry_limit = priv->short_retry_limit;
1368
1369 if (priv->wep_enabled) {
1370 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1371 ccfg->encryption_type = 2;
1372 else
1373 ccfg->encryption_type = 1;
1374
1375 /* jal: always exclude unencrypted if WEP is active */
1376 ccfg->exclude_unencrypted = 1;
1377 } else {
1378 ccfg->exclude_unencrypted = 0;
1379 ccfg->encryption_type = 0;
1380 }
1381
1382 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1383 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1384
1385 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1386 /* jal: really needed, we do a set_mib for autorate later ??? */
1387 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1388 ccfg->channel = priv->channel;
1389 ccfg->privacy_invoked = priv->wep_enabled;
1390 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1391 ccfg->ssid_len = priv->essid_size;
1392
1393 ccfg->wep_default_key_id = priv->wep_key_id;
1394 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1395 sizeof(priv->wep_keys));
1396
1397 ccfg->short_preamble = priv->preamble_type;
1398 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1399
1400 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1401 sizeof(struct at76_card_config));
1402 if (ret < 0) {
1403 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1404 ret);
1405 return ret;
1406 }
1407
1408 at76_wait_completion(priv, CMD_STARTUP);
1409
1410 /* remove BSSID from previous run */
1411 memset(priv->bssid, 0, ETH_ALEN);
1412
1413 if (at76_set_radio(priv, 1) == 1)
1414 at76_wait_completion(priv, CMD_RADIO_ON);
1415
1416 ret = at76_set_preamble(priv, priv->preamble_type);
1417 if (ret < 0)
1418 return ret;
1419
1420 ret = at76_set_frag(priv, priv->frag_threshold);
1421 if (ret < 0)
1422 return ret;
1423
1424 ret = at76_set_rts(priv, priv->rts_threshold);
1425 if (ret < 0)
1426 return ret;
1427
1428 ret = at76_set_autorate_fallback(priv,
1429 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1430 if (ret < 0)
1431 return ret;
1432
1433 ret = at76_set_pm_mode(priv);
1434 if (ret < 0)
1435 return ret;
1436
1437 if (at76_debug & DBG_MIB) {
1438 at76_dump_mib_mac(priv);
1439 at76_dump_mib_mac_addr(priv);
1440 at76_dump_mib_mac_mgmt(priv);
1441 at76_dump_mib_mac_wep(priv);
1442 at76_dump_mib_mdomain(priv);
1443 at76_dump_mib_phy(priv);
1444 at76_dump_mib_local(priv);
1445 }
1446
1447 return 0;
1448 }
1449
1450 /* Enable or disable promiscuous mode */
1451 static void at76_work_set_promisc(struct work_struct *work)
1452 {
1453 struct at76_priv *priv = container_of(work, struct at76_priv,
1454 work_set_promisc);
1455 int ret = 0;
1456
1457 if (priv->device_unplugged)
1458 return;
1459
1460 mutex_lock(&priv->mtx);
1461
1462 priv->mib_buf.type = MIB_LOCAL;
1463 priv->mib_buf.size = 1;
1464 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1465 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1466
1467 ret = at76_set_mib(priv, &priv->mib_buf);
1468 if (ret < 0)
1469 wiphy_err(priv->hw->wiphy,
1470 "set_mib (promiscuous_mode) failed: %d\n", ret);
1471
1472 mutex_unlock(&priv->mtx);
1473 }
1474
1475 /* Submit Rx urb back to the device */
1476 static void at76_work_submit_rx(struct work_struct *work)
1477 {
1478 struct at76_priv *priv = container_of(work, struct at76_priv,
1479 work_submit_rx);
1480
1481 mutex_lock(&priv->mtx);
1482 at76_submit_rx_urb(priv);
1483 mutex_unlock(&priv->mtx);
1484 }
1485
1486 static void at76_rx_tasklet(unsigned long param)
1487 {
1488 struct urb *urb = (struct urb *)param;
1489 struct at76_priv *priv = urb->context;
1490 struct at76_rx_buffer *buf;
1491 struct ieee80211_rx_status rx_status = { 0 };
1492
1493 if (priv->device_unplugged) {
1494 at76_dbg(DBG_DEVSTART, "device unplugged");
1495 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1496 return;
1497 }
1498
1499 if (!priv->rx_skb || !priv->rx_skb->data)
1500 return;
1501
1502 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1503
1504 if (urb->status != 0) {
1505 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1506 at76_dbg(DBG_URB,
1507 "%s %s: - nonzero Rx bulk status received: %d",
1508 __func__, wiphy_name(priv->hw->wiphy),
1509 urb->status);
1510 return;
1511 }
1512
1513 at76_dbg(DBG_RX_ATMEL_HDR,
1514 "%s: rx frame: rate %d rssi %d noise %d link %d",
1515 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1516 buf->noise_level, buf->link_quality);
1517
1518 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1519 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1520 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1521 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1522
1523 rx_status.signal = buf->rssi;
1524 rx_status.flag |= RX_FLAG_DECRYPTED;
1525 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1526
1527 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1528 priv->rx_skb->len, priv->rx_skb->data_len);
1529 memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1530 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1531
1532 /* Use a new skb for the next receive */
1533 priv->rx_skb = NULL;
1534
1535 at76_submit_rx_urb(priv);
1536 }
1537
1538 /* Load firmware into kernel memory and parse it */
1539 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1540 enum board_type board_type)
1541 {
1542 int ret;
1543 char *str;
1544 struct at76_fw_header *fwh;
1545 struct fwentry *fwe = &firmwares[board_type];
1546
1547 mutex_lock(&fw_mutex);
1548
1549 if (fwe->loaded) {
1550 at76_dbg(DBG_FW, "re-using previously loaded fw");
1551 goto exit;
1552 }
1553
1554 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1555 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1556 if (ret < 0) {
1557 dev_err(&udev->dev, "firmware %s not found!\n",
1558 fwe->fwname);
1559 dev_err(&udev->dev,
1560 "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n");
1561 goto exit;
1562 }
1563
1564 at76_dbg(DBG_FW, "got it.");
1565 fwh = (struct at76_fw_header *)(fwe->fw->data);
1566
1567 if (fwe->fw->size <= sizeof(*fwh)) {
1568 dev_err(&udev->dev,
1569 "firmware is too short (0x%zx)\n", fwe->fw->size);
1570 goto exit;
1571 }
1572
1573 /* CRC currently not checked */
1574 fwe->board_type = le32_to_cpu(fwh->board_type);
1575 if (fwe->board_type != board_type) {
1576 dev_err(&udev->dev,
1577 "board type mismatch, requested %u, got %u\n",
1578 board_type, fwe->board_type);
1579 goto exit;
1580 }
1581
1582 fwe->fw_version.major = fwh->major;
1583 fwe->fw_version.minor = fwh->minor;
1584 fwe->fw_version.patch = fwh->patch;
1585 fwe->fw_version.build = fwh->build;
1586
1587 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1588 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1589 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1590 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1591 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1592
1593 fwe->loaded = 1;
1594
1595 dev_printk(KERN_DEBUG, &udev->dev,
1596 "using firmware %s (version %d.%d.%d-%d)\n",
1597 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1598
1599 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1600 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1601 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1602 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1603
1604 exit:
1605 mutex_unlock(&fw_mutex);
1606
1607 if (fwe->loaded)
1608 return fwe;
1609 else
1610 return NULL;
1611 }
1612
1613 static int at76_join(struct at76_priv *priv)
1614 {
1615 struct at76_req_join join;
1616 int ret;
1617
1618 memset(&join, 0, sizeof(struct at76_req_join));
1619 memcpy(join.essid, priv->essid, priv->essid_size);
1620 join.essid_size = priv->essid_size;
1621 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1622 join.bss_type = INFRASTRUCTURE_MODE;
1623 join.channel = priv->channel;
1624 join.timeout = cpu_to_le16(2000);
1625
1626 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1627 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1628 sizeof(struct at76_req_join));
1629
1630 if (ret < 0) {
1631 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1632 ret);
1633 return 0;
1634 }
1635
1636 ret = at76_wait_completion(priv, CMD_JOIN);
1637 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1638 if (ret != CMD_STATUS_COMPLETE) {
1639 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1640 ret);
1641 return 0;
1642 }
1643
1644 at76_set_pm_mode(priv);
1645
1646 return 0;
1647 }
1648
1649 static void at76_work_join_bssid(struct work_struct *work)
1650 {
1651 struct at76_priv *priv = container_of(work, struct at76_priv,
1652 work_join_bssid);
1653
1654 if (priv->device_unplugged)
1655 return;
1656
1657 mutex_lock(&priv->mtx);
1658
1659 if (is_valid_ether_addr(priv->bssid))
1660 at76_join(priv);
1661
1662 mutex_unlock(&priv->mtx);
1663 }
1664
1665 static void at76_mac80211_tx_callback(struct urb *urb)
1666 {
1667 struct at76_priv *priv = urb->context;
1668 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1669
1670 at76_dbg(DBG_MAC80211, "%s()", __func__);
1671
1672 switch (urb->status) {
1673 case 0:
1674 /* success */
1675 info->flags |= IEEE80211_TX_STAT_ACK;
1676 break;
1677 case -ENOENT:
1678 case -ECONNRESET:
1679 /* fail, urb has been unlinked */
1680 /* FIXME: add error message */
1681 break;
1682 default:
1683 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1684 __func__, urb->status);
1685 break;
1686 }
1687
1688 memset(&info->status, 0, sizeof(info->status));
1689
1690 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1691
1692 priv->tx_skb = NULL;
1693
1694 ieee80211_wake_queues(priv->hw);
1695 }
1696
1697 static void at76_mac80211_tx(struct ieee80211_hw *hw,
1698 struct ieee80211_tx_control *control,
1699 struct sk_buff *skb)
1700 {
1701 struct at76_priv *priv = hw->priv;
1702 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1703 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1704 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1705 int padding, submit_len, ret;
1706
1707 at76_dbg(DBG_MAC80211, "%s()", __func__);
1708
1709 if (priv->tx_urb->status == -EINPROGRESS) {
1710 wiphy_err(priv->hw->wiphy,
1711 "%s called while tx urb is pending\n", __func__);
1712 dev_kfree_skb_any(skb);
1713 return;
1714 }
1715
1716 /* The following code lines are important when the device is going to
1717 * authenticate with a new bssid. The driver must send CMD_JOIN before
1718 * an authentication frame is transmitted. For this to succeed, the
1719 * correct bssid of the AP must be known. As mac80211 does not inform
1720 * drivers about the bssid prior to the authentication process the
1721 * following workaround is necessary. If the TX frame is an
1722 * authentication frame extract the bssid and send the CMD_JOIN. */
1723 if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1724 if (!ether_addr_equal(priv->bssid, mgmt->bssid)) {
1725 memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1726 ieee80211_queue_work(hw, &priv->work_join_bssid);
1727 dev_kfree_skb_any(skb);
1728 return;
1729 }
1730 }
1731
1732 ieee80211_stop_queues(hw);
1733
1734 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
1735
1736 WARN_ON(priv->tx_skb != NULL);
1737
1738 priv->tx_skb = skb;
1739 padding = at76_calc_padding(skb->len);
1740 submit_len = AT76_TX_HDRLEN + skb->len + padding;
1741
1742 /* setup 'Atmel' header */
1743 memset(tx_buffer, 0, sizeof(*tx_buffer));
1744 tx_buffer->padding = padding;
1745 tx_buffer->wlength = cpu_to_le16(skb->len);
1746 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1747 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1748 memcpy(tx_buffer->packet, skb->data, skb->len);
1749
1750 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1751 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1752 tx_buffer->padding, tx_buffer->tx_rate);
1753
1754 /* send stuff */
1755 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1756 "%s(): tx_buffer %d bytes:", __func__, submit_len);
1757 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1758 submit_len, at76_mac80211_tx_callback, priv);
1759 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1760 if (ret) {
1761 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1762 if (ret == -EINVAL)
1763 wiphy_err(priv->hw->wiphy,
1764 "-EINVAL: tx urb %p hcpriv %p complete %p\n",
1765 priv->tx_urb,
1766 priv->tx_urb->hcpriv, priv->tx_urb->complete);
1767 }
1768 }
1769
1770 static int at76_mac80211_start(struct ieee80211_hw *hw)
1771 {
1772 struct at76_priv *priv = hw->priv;
1773 int ret;
1774
1775 at76_dbg(DBG_MAC80211, "%s()", __func__);
1776
1777 mutex_lock(&priv->mtx);
1778
1779 ret = at76_submit_rx_urb(priv);
1780 if (ret < 0) {
1781 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1782 ret);
1783 goto error;
1784 }
1785
1786 at76_startup_device(priv);
1787
1788 at76_start_monitor(priv);
1789
1790 error:
1791 mutex_unlock(&priv->mtx);
1792
1793 return 0;
1794 }
1795
1796 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1797 {
1798 struct at76_priv *priv = hw->priv;
1799
1800 at76_dbg(DBG_MAC80211, "%s()", __func__);
1801
1802 cancel_delayed_work(&priv->dwork_hw_scan);
1803 cancel_work_sync(&priv->work_join_bssid);
1804 cancel_work_sync(&priv->work_set_promisc);
1805
1806 mutex_lock(&priv->mtx);
1807
1808 if (!priv->device_unplugged) {
1809 /* We are called by "ifconfig ethX down", not because the
1810 * device is not available anymore. */
1811 at76_set_radio(priv, 0);
1812
1813 /* We unlink rx_urb because at76_open() re-submits it.
1814 * If unplugged, at76_delete_device() takes care of it. */
1815 usb_kill_urb(priv->rx_urb);
1816 }
1817
1818 mutex_unlock(&priv->mtx);
1819 }
1820
1821 static int at76_add_interface(struct ieee80211_hw *hw,
1822 struct ieee80211_vif *vif)
1823 {
1824 struct at76_priv *priv = hw->priv;
1825 int ret = 0;
1826
1827 at76_dbg(DBG_MAC80211, "%s()", __func__);
1828
1829 mutex_lock(&priv->mtx);
1830
1831 switch (vif->type) {
1832 case NL80211_IFTYPE_STATION:
1833 priv->iw_mode = IW_MODE_INFRA;
1834 break;
1835 default:
1836 ret = -EOPNOTSUPP;
1837 goto exit;
1838 }
1839
1840 exit:
1841 mutex_unlock(&priv->mtx);
1842
1843 return ret;
1844 }
1845
1846 static void at76_remove_interface(struct ieee80211_hw *hw,
1847 struct ieee80211_vif *vif)
1848 {
1849 at76_dbg(DBG_MAC80211, "%s()", __func__);
1850 }
1851
1852 static void at76_dwork_hw_scan(struct work_struct *work)
1853 {
1854 struct at76_priv *priv = container_of(work, struct at76_priv,
1855 dwork_hw_scan.work);
1856 int ret;
1857
1858 if (priv->device_unplugged)
1859 return;
1860
1861 mutex_lock(&priv->mtx);
1862
1863 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1864 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1865
1866 /* FIXME: add maximum time for scan to complete */
1867
1868 if (ret != CMD_STATUS_COMPLETE) {
1869 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1870 SCAN_POLL_INTERVAL);
1871 mutex_unlock(&priv->mtx);
1872 return;
1873 }
1874
1875 if (is_valid_ether_addr(priv->bssid))
1876 at76_join(priv);
1877
1878 mutex_unlock(&priv->mtx);
1879
1880 ieee80211_scan_completed(priv->hw, false);
1881
1882 ieee80211_wake_queues(priv->hw);
1883 }
1884
1885 static int at76_hw_scan(struct ieee80211_hw *hw,
1886 struct ieee80211_vif *vif,
1887 struct cfg80211_scan_request *req)
1888 {
1889 struct at76_priv *priv = hw->priv;
1890 struct at76_req_scan scan;
1891 u8 *ssid = NULL;
1892 int ret, len = 0;
1893
1894 at76_dbg(DBG_MAC80211, "%s():", __func__);
1895
1896 if (priv->device_unplugged)
1897 return 0;
1898
1899 mutex_lock(&priv->mtx);
1900
1901 ieee80211_stop_queues(hw);
1902
1903 memset(&scan, 0, sizeof(struct at76_req_scan));
1904 memset(scan.bssid, 0xFF, ETH_ALEN);
1905
1906 if (req->n_ssids) {
1907 scan.scan_type = SCAN_TYPE_ACTIVE;
1908 ssid = req->ssids[0].ssid;
1909 len = req->ssids[0].ssid_len;
1910 } else {
1911 scan.scan_type = SCAN_TYPE_PASSIVE;
1912 }
1913
1914 if (len) {
1915 memcpy(scan.essid, ssid, len);
1916 scan.essid_size = len;
1917 }
1918
1919 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1920 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1921 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1922 scan.international_scan = 0;
1923
1924 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1925 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1926
1927 if (ret < 0) {
1928 wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret);
1929 goto exit;
1930 }
1931
1932 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1933 SCAN_POLL_INTERVAL);
1934
1935 exit:
1936 mutex_unlock(&priv->mtx);
1937
1938 return 0;
1939 }
1940
1941 static int at76_config(struct ieee80211_hw *hw, u32 changed)
1942 {
1943 struct at76_priv *priv = hw->priv;
1944
1945 at76_dbg(DBG_MAC80211, "%s(): channel %d",
1946 __func__, hw->conf.chandef.chan->hw_value);
1947 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1948
1949 mutex_lock(&priv->mtx);
1950
1951 priv->channel = hw->conf.chandef.chan->hw_value;
1952
1953 if (is_valid_ether_addr(priv->bssid))
1954 at76_join(priv);
1955 else
1956 at76_start_monitor(priv);
1957
1958 mutex_unlock(&priv->mtx);
1959
1960 return 0;
1961 }
1962
1963 static void at76_bss_info_changed(struct ieee80211_hw *hw,
1964 struct ieee80211_vif *vif,
1965 struct ieee80211_bss_conf *conf,
1966 u32 changed)
1967 {
1968 struct at76_priv *priv = hw->priv;
1969
1970 at76_dbg(DBG_MAC80211, "%s():", __func__);
1971
1972 if (!(changed & BSS_CHANGED_BSSID))
1973 return;
1974
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
1988 /* must be atomic */
1989 static void at76_configure_filter(struct ieee80211_hw *hw,
1990 unsigned int changed_flags,
1991 unsigned int *total_flags, u64 multicast)
1992 {
1993 struct at76_priv *priv = hw->priv;
1994 int flags;
1995
1996 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
1997 "total_flags=0x%08x",
1998 __func__, changed_flags, *total_flags);
1999
2000 flags = changed_flags & AT76_SUPPORTED_FILTERS;
2001 *total_flags = AT76_SUPPORTED_FILTERS;
2002
2003 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2004 if (priv->device_unplugged)
2005 return;
2006
2007 /* FIXME: access to priv->promisc should be protected with
2008 * priv->mtx, but it's impossible because this function needs to be
2009 * atomic */
2010
2011 if (flags && !priv->promisc) {
2012 /* mac80211 wants us to enable promiscuous mode */
2013 priv->promisc = 1;
2014 } else if (!flags && priv->promisc) {
2015 /* we need to disable promiscuous mode */
2016 priv->promisc = 0;
2017 } else
2018 return;
2019
2020 ieee80211_queue_work(hw, &priv->work_set_promisc);
2021 }
2022
2023 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2024 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2025 struct ieee80211_key_conf *key)
2026 {
2027 struct at76_priv *priv = hw->priv;
2028
2029 int i;
2030
2031 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d "
2032 "key->keylen %d",
2033 __func__, cmd, key->cipher, key->keyidx, key->keylen);
2034
2035 if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) &&
2036 (key->cipher != WLAN_CIPHER_SUITE_WEP104))
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
2072 static 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 .bss_info_changed = at76_bss_info_changed,
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 */
2086 static 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_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2107 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2108
2109 tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2110
2111 priv->pm_mode = AT76_PM_OFF;
2112 priv->pm_period = 0;
2113
2114 /* unit us */
2115 priv->hw->channel_change_time = 100000;
2116
2117 return priv;
2118 }
2119
2120 static int at76_alloc_urbs(struct at76_priv *priv,
2121 struct usb_interface *interface)
2122 {
2123 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2124 int i;
2125 int buffer_size;
2126 struct usb_host_interface *iface_desc;
2127
2128 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2129
2130 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2131 interface->altsetting[0].desc.bNumEndpoints);
2132
2133 ep_in = NULL;
2134 ep_out = NULL;
2135 iface_desc = interface->cur_altsetting;
2136 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2137 endpoint = &iface_desc->endpoint[i].desc;
2138
2139 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2140 __func__, i, endpoint->bEndpointAddress,
2141 endpoint->bmAttributes);
2142
2143 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2144 ep_in = endpoint;
2145
2146 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2147 ep_out = endpoint;
2148 }
2149
2150 if (!ep_in || !ep_out) {
2151 dev_err(&interface->dev, "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_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 return -ENOMEM;
2169
2170 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2171
2172 return 0;
2173 }
2174
2175 static struct ieee80211_rate at76_rates[] = {
2176 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2177 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2178 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2179 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2180 };
2181
2182 static struct ieee80211_channel at76_channels[] = {
2183 { .center_freq = 2412, .hw_value = 1 },
2184 { .center_freq = 2417, .hw_value = 2 },
2185 { .center_freq = 2422, .hw_value = 3 },
2186 { .center_freq = 2427, .hw_value = 4 },
2187 { .center_freq = 2432, .hw_value = 5 },
2188 { .center_freq = 2437, .hw_value = 6 },
2189 { .center_freq = 2442, .hw_value = 7 },
2190 { .center_freq = 2447, .hw_value = 8 },
2191 { .center_freq = 2452, .hw_value = 9 },
2192 { .center_freq = 2457, .hw_value = 10 },
2193 { .center_freq = 2462, .hw_value = 11 },
2194 { .center_freq = 2467, .hw_value = 12 },
2195 { .center_freq = 2472, .hw_value = 13 },
2196 { .center_freq = 2484, .hw_value = 14 }
2197 };
2198
2199 static struct ieee80211_supported_band at76_supported_band = {
2200 .channels = at76_channels,
2201 .n_channels = ARRAY_SIZE(at76_channels),
2202 .bitrates = at76_rates,
2203 .n_bitrates = ARRAY_SIZE(at76_rates),
2204 };
2205
2206 /* Register network device and initialize the hardware */
2207 static int at76_init_new_device(struct at76_priv *priv,
2208 struct usb_interface *interface)
2209 {
2210 struct wiphy *wiphy;
2211 size_t len;
2212 int ret;
2213
2214 /* set up the endpoint information */
2215 /* check out the endpoints */
2216
2217 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2218 interface->cur_altsetting->desc.bNumEndpoints);
2219
2220 ret = at76_alloc_urbs(priv, interface);
2221 if (ret < 0)
2222 goto exit;
2223
2224 /* MAC address */
2225 ret = at76_get_hw_config(priv);
2226 if (ret < 0) {
2227 dev_err(&interface->dev, "cannot get MAC address\n");
2228 goto exit;
2229 }
2230
2231 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2232
2233 priv->channel = DEF_CHANNEL;
2234 priv->iw_mode = IW_MODE_INFRA;
2235 priv->rts_threshold = DEF_RTS_THRESHOLD;
2236 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2237 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2238 priv->txrate = TX_RATE_AUTO;
2239 priv->preamble_type = PREAMBLE_TYPE_LONG;
2240 priv->beacon_period = 100;
2241 priv->auth_mode = WLAN_AUTH_OPEN;
2242 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2243 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2244 priv->scan_mode = SCAN_TYPE_ACTIVE;
2245 priv->device_unplugged = 0;
2246
2247 /* mac80211 initialisation */
2248 wiphy = priv->hw->wiphy;
2249 priv->hw->wiphy->max_scan_ssids = 1;
2250 priv->hw->wiphy->max_scan_ie_len = 0;
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;
2255 priv->hw->max_signal = 100;
2256
2257 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2258 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2259
2260 len = sizeof(wiphy->fw_version);
2261 snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2262 priv->fw_version.major, priv->fw_version.minor,
2263 priv->fw_version.patch, priv->fw_version.build);
2264
2265 wiphy->hw_version = priv->board_type;
2266
2267 ret = ieee80211_register_hw(priv->hw);
2268 if (ret) {
2269 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2270 ret);
2271 goto exit;
2272 }
2273
2274 priv->mac80211_registered = 1;
2275
2276 wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2277 dev_name(&interface->dev), priv->mac_addr,
2278 priv->fw_version.major, priv->fw_version.minor,
2279 priv->fw_version.patch, priv->fw_version.build);
2280 wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2281 priv->regulatory_domain, priv->domain->name);
2282
2283 exit:
2284 return ret;
2285 }
2286
2287 static void at76_delete_device(struct at76_priv *priv)
2288 {
2289 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2290
2291 /* The device is gone, don't bother turning it off */
2292 priv->device_unplugged = 1;
2293
2294 tasklet_kill(&priv->rx_tasklet);
2295
2296 if (priv->mac80211_registered)
2297 ieee80211_unregister_hw(priv->hw);
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
2310 kfree(priv->bulk_out_buffer);
2311
2312 del_timer_sync(&ledtrig_tx_timer);
2313
2314 kfree_skb(priv->rx_skb);
2315
2316 usb_put_dev(priv->udev);
2317
2318 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2319 __func__);
2320 ieee80211_free_hw(priv->hw);
2321
2322 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2323 }
2324
2325 static int at76_probe(struct usb_interface *interface,
2326 const struct usb_device_id *id)
2327 {
2328 int ret;
2329 struct at76_priv *priv;
2330 struct fwentry *fwe;
2331 struct usb_device *udev;
2332 int op_mode;
2333 int need_ext_fw = 0;
2334 struct mib_fw_version fwv;
2335 int board_type = (int)id->driver_info;
2336
2337 udev = usb_get_dev(interface_to_usbdev(interface));
2338
2339 /* Load firmware into kernel memory */
2340 fwe = at76_load_firmware(udev, board_type);
2341 if (!fwe) {
2342 ret = -ENOENT;
2343 goto error;
2344 }
2345
2346 op_mode = at76_get_op_mode(udev);
2347
2348 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2349
2350 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2351 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2352
2353 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2354 dev_err(&interface->dev,
2355 "cannot handle a device in HW_CONFIG_MODE\n");
2356 ret = -EBUSY;
2357 goto error;
2358 }
2359
2360 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2361 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2362 /* download internal firmware part */
2363 dev_printk(KERN_DEBUG, &interface->dev,
2364 "downloading internal firmware\n");
2365 ret = at76_load_internal_fw(udev, fwe);
2366 if (ret < 0) {
2367 dev_err(&interface->dev,
2368 "error %d downloading internal firmware\n",
2369 ret);
2370 goto error;
2371 }
2372 usb_put_dev(udev);
2373 return ret;
2374 }
2375
2376 /* Internal firmware already inside the device. Get firmware
2377 * version to test if external firmware is loaded.
2378 * This works only for newer firmware, e.g. the Intersil 0.90.x
2379 * says "control timeout on ep0in" and subsequent
2380 * at76_get_op_mode() fail too :-( */
2381
2382 /* if version >= 0.100.x.y or device with built-in flash we can
2383 * query the device for the fw version */
2384 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2385 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2386 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2387 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2388 need_ext_fw = 1;
2389 } else
2390 /* No way to check firmware version, reload to be sure */
2391 need_ext_fw = 1;
2392
2393 if (need_ext_fw) {
2394 dev_printk(KERN_DEBUG, &interface->dev,
2395 "downloading external firmware\n");
2396
2397 ret = at76_load_external_fw(udev, fwe);
2398 if (ret)
2399 goto error;
2400
2401 /* Re-check firmware version */
2402 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2403 if (ret < 0) {
2404 dev_err(&interface->dev,
2405 "error %d getting firmware version\n", ret);
2406 goto error;
2407 }
2408 }
2409
2410 priv = at76_alloc_new_device(udev);
2411 if (!priv) {
2412 ret = -ENOMEM;
2413 goto error;
2414 }
2415
2416 usb_set_intfdata(interface, priv);
2417
2418 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2419 priv->board_type = board_type;
2420
2421 ret = at76_init_new_device(priv, interface);
2422 if (ret < 0)
2423 at76_delete_device(priv);
2424
2425 return ret;
2426
2427 error:
2428 usb_put_dev(udev);
2429 return ret;
2430 }
2431
2432 static void at76_disconnect(struct usb_interface *interface)
2433 {
2434 struct at76_priv *priv;
2435
2436 priv = usb_get_intfdata(interface);
2437 usb_set_intfdata(interface, NULL);
2438
2439 /* Disconnect after loading internal firmware */
2440 if (!priv)
2441 return;
2442
2443 wiphy_info(priv->hw->wiphy, "disconnecting\n");
2444 at76_delete_device(priv);
2445 dev_info(&interface->dev, "disconnected\n");
2446 }
2447
2448 /* Structure for registering this driver with the USB subsystem */
2449 static struct usb_driver at76_driver = {
2450 .name = DRIVER_NAME,
2451 .probe = at76_probe,
2452 .disconnect = at76_disconnect,
2453 .id_table = dev_table,
2454 .disable_hub_initiated_lpm = 1,
2455 };
2456
2457 static 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
2475 static 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 release_firmware(firmwares[i].fw);
2483 led_trigger_unregister_simple(ledtrig_tx);
2484 }
2485
2486 module_param_named(debug, at76_debug, uint, 0600);
2487 MODULE_PARM_DESC(debug, "Debugging level");
2488
2489 module_init(at76_mod_init);
2490 module_exit(at76_mod_exit);
2491
2492 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2493 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2494 MODULE_AUTHOR("Alex <alex@foogod.com>");
2495 MODULE_AUTHOR("Nick Jones");
2496 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2497 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2498 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2499 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2500 MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
2501 MODULE_DESCRIPTION(DRIVER_DESC);
2502 MODULE_LICENSE("GPL");
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