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Staging: at76_usb: cleanup dma on stack issues
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / staging / at76_usb / at76_usb.c
blobc68d2279d4955963087a6f22aa0eba40ec1e533c
1 /*
2 * at76c503/at76c505 USB driver
3 *
4 * Copyright (c) 2002 - 2003 Oliver Kurth
5 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
6 * Copyright (c) 2004 Nick Jones
7 * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
8 * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
9 * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This file is part of the Berlios driver for WLAN USB devices based on the
17 * Atmel AT76C503A/505/505A.
18 *
19 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
20 *
21 * TODO for the mac80211 port:
22 * o adhoc support
23 * o RTS/CTS support
24 * o Power Save Mode support
25 * o support for short/long preambles
26 * o export variables through debugfs/sysfs
27 */
28
29 #include <linux/init.h>
30 #include <linux/kernel.h>
31 #include <linux/sched.h>
32 #include <linux/errno.h>
33 #include <linux/slab.h>
34 #include <linux/module.h>
35 #include <linux/spinlock.h>
36 #include <linux/list.h>
37 #include <linux/usb.h>
38 #include <linux/netdevice.h>
39 #include <linux/if_arp.h>
40 #include <linux/etherdevice.h>
41 #include <linux/ethtool.h>
42 #include <linux/wireless.h>
43 #include <net/iw_handler.h>
44 #include <net/ieee80211_radiotap.h>
45 #include <linux/firmware.h>
46 #include <linux/leds.h>
47 #include <net/mac80211.h>
48
49 #include "at76_usb.h"
50
51 /* Version information */
52 #define DRIVER_NAME "at76_usb"
53 #define DRIVER_VERSION "0.17"
54 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
55
56 /* at76_debug bits */
57 #define DBG_PROGRESS 0x00000001 /* authentication/accociation */
58 #define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */
59 #define DBG_IOCTL 0x00000004 /* ioctl calls / settings */
60 #define DBG_MAC_STATE 0x00000008 /* MAC state transitions */
61 #define DBG_TX_DATA 0x00000010 /* tx header */
62 #define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */
63 #define DBG_TX_MGMT 0x00000040 /* tx management */
64 #define DBG_RX_DATA 0x00000080 /* rx data header */
65 #define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */
66 #define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */
67 #define DBG_RX_BEACON 0x00000400 /* rx beacon */
68 #define DBG_RX_CTRL 0x00000800 /* rx control */
69 #define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */
70 #define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */
71 #define DBG_DEVSTART 0x00004000 /* fw download, device start */
72 #define DBG_URB 0x00008000 /* rx urb status, ... */
73 #define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */
74 #define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */
75 #define DBG_PM 0x00040000 /* power management settings */
76 #define DBG_BSS_MATCH 0x00080000 /* BSS match failures */
77 #define DBG_PARAMS 0x00100000 /* show configured parameters */
78 #define DBG_WAIT_COMPLETE 0x00200000 /* command completion */
79 #define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */
80 #define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */
81 #define DBG_MONITOR_MODE 0x01000000 /* monitor mode */
82 #define DBG_MIB 0x02000000 /* dump all MIBs on startup */
83 #define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */
84 #define DBG_WE_EVENTS 0x08000000 /* dump wireless events */
85 #define DBG_FW 0x10000000 /* firmware download */
86 #define DBG_DFU 0x20000000 /* device firmware upgrade */
87 #define DBG_CMD 0x40000000
88 #define DBG_MAC80211 0x80000000
89
90 #define DBG_DEFAULTS 0
91
92 /* Use our own dbg macro */
93 #define at76_dbg(bits, format, arg...) \
94 do { \
95 if (at76_debug & (bits)) \
96 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , ## arg); \
97 } while (0)
98
99 #define at76_dbg_dump(bits, buf, len, format, arg...) \
100 do { \
101 if (at76_debug & (bits)) { \
102 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , ## arg); \
103 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
104 } \
105 } while (0)
106
107 static int at76_debug = DBG_DEFAULTS;
108
109 #define FIRMWARE_IS_WPA(ver) ((ver.major == 1) && (ver.minor == 103))
110
111 /* Protect against concurrent firmware loading and parsing */
112 static struct mutex fw_mutex;
113
114 static struct fwentry firmwares[] = {
115 [0] = { "" },
116 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
117 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
118 [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
119 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
120 [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
121 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
122 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
123 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
124 };
125
126 #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
127
128 static struct usb_device_id dev_table[] = {
129 /*
130 * at76c503-i3861
131 */
132 /* Generic AT76C503/3861 device */
133 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
134 /* Linksys WUSB11 v2.1/v2.6 */
135 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
136 /* Netgear MA101 rev. A */
137 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
138 /* Tekram U300C / Allnet ALL0193 */
139 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
140 /* HP HN210W J7801A */
141 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
142 /* Sitecom/Z-Com/Zyxel M4Y-750 */
143 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
144 /* Dynalink/Askey WLL013 (intersil) */
145 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
146 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
147 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
148 /* BenQ AWL300 */
149 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
150 /* Addtron AWU-120, Compex WLU11 */
151 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
152 /* Intel AP310 AnyPoint II USB */
153 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
154 /* Dynalink L11U */
155 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
156 /* Arescom WL-210, FCC id 07J-GL2411USB */
157 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
158 /* I-O DATA WN-B11/USB */
159 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
160 /* BT Voyager 1010 */
161 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
162 /*
163 * at76c503-i3863
164 */
165 /* Generic AT76C503/3863 device */
166 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
167 /* Samsung SWL-2100U */
168 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
169 /*
170 * at76c503-rfmd
171 */
172 /* Generic AT76C503/RFMD device */
173 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
174 /* Dynalink/Askey WLL013 (rfmd) */
175 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
176 /* Linksys WUSB11 v2.6 */
177 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
178 /* Network Everywhere NWU11B */
179 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
180 /* Netgear MA101 rev. B */
181 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
182 /* D-Link DWL-120 rev. E */
183 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
184 /* Actiontec 802UAT1, HWU01150-01UK */
185 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
186 /* AirVast W-Buddie WN210 */
187 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
188 /* Dick Smith Electronics XH1153 802.11b USB adapter */
189 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
190 /* CNet CNUSB611 */
191 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
192 /* FiberLine FL-WL200U */
193 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
194 /* BenQ AWL400 USB stick */
195 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
196 /* 3Com 3CRSHEW696 */
197 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
198 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
199 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
200 /* Belkin F5D6050, version 2 */
201 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
202 /* iBlitzz, BWU613 (not *B or *SB) */
203 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
204 /* Gigabyte GN-WLBM101 */
205 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
206 /* Planex GW-US11S */
207 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
208 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
209 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
210 /* Corega Wireless LAN USB-11 mini */
211 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
212 /* Corega Wireless LAN USB-11 mini2 */
213 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
214 /* Uniden PCW100 */
215 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
216 /*
217 * at76c503-rfmd-acc
218 */
219 /* SMC2664W */
220 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
221 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
222 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
223 /*
224 * at76c505-rfmd
225 */
226 /* Generic AT76C505/RFMD */
227 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
228 /*
229 * at76c505-rfmd2958
230 */
231 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
232 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
233 /* Fiberline FL-WL240U */
234 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
235 /* CNet CNUSB-611G */
236 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
237 /* Linksys WUSB11 v2.8 */
238 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
239 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
240 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
241 /* Corega WLAN USB Stick 11 */
242 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
243 /* Microstar MSI Box MS6978 */
244 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
245 /*
246 * at76c505a-rfmd2958
247 */
248 /* Generic AT76C505A device */
249 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
250 /* Generic AT76C505AS device */
251 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
252 /* Siemens Gigaset USB WLAN Adapter 11 */
253 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
254 /*
255 * at76c505amx-rfmd
256 */
257 /* Generic AT76C505AMX device */
258 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
259 { }
260 };
261
262 MODULE_DEVICE_TABLE(usb, dev_table);
263
264 /* Supported rates of this hardware, bit 7 marks basic rates */
265 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
266
267 static const char *const preambles[] = { "long", "short", "auto" };
268
269 /* Firmware download */
270 /* DFU states */
271 #define STATE_IDLE 0x00
272 #define STATE_DETACH 0x01
273 #define STATE_DFU_IDLE 0x02
274 #define STATE_DFU_DOWNLOAD_SYNC 0x03
275 #define STATE_DFU_DOWNLOAD_BUSY 0x04
276 #define STATE_DFU_DOWNLOAD_IDLE 0x05
277 #define STATE_DFU_MANIFEST_SYNC 0x06
278 #define STATE_DFU_MANIFEST 0x07
279 #define STATE_DFU_MANIFEST_WAIT_RESET 0x08
280 #define STATE_DFU_UPLOAD_IDLE 0x09
281 #define STATE_DFU_ERROR 0x0a
282
283 /* DFU commands */
284 #define DFU_DETACH 0
285 #define DFU_DNLOAD 1
286 #define DFU_UPLOAD 2
287 #define DFU_GETSTATUS 3
288 #define DFU_CLRSTATUS 4
289 #define DFU_GETSTATE 5
290 #define DFU_ABORT 6
291
292 #define FW_BLOCK_SIZE 1024
293
294 struct dfu_status {
295 unsigned char status;
296 unsigned char poll_timeout[3];
297 unsigned char state;
298 unsigned char string;
299 } __attribute__((packed));
300
301 static inline int at76_is_intersil(enum board_type board)
302 {
303 if (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863)
304 return 1;
305 return 0;
306 }
307
308 static inline int at76_is_503rfmd(enum board_type board)
309 {
310 if (board == BOARD_503 || board == BOARD_503_ACC)
311 return 1;
312 return 0;
313 }
314
315 static inline int at76_is_505(enum board_type board)
316 {
317 if (board == BOARD_505 || board == BOARD_505_2958)
318 return 1;
319 return 0;
320 }
321
322 static inline int at76_is_505a(enum board_type board)
323 {
324 if (board == BOARD_505A || board == BOARD_505AMX)
325 return 1;
326 return 0;
327 }
328
329 /* Load a block of the first (internal) part of the firmware */
330 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
331 void *block, int size)
332 {
333 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
334 USB_TYPE_CLASS | USB_DIR_OUT |
335 USB_RECIP_INTERFACE, blockno, 0, block, size,
336 USB_CTRL_GET_TIMEOUT);
337 }
338
339 static int at76_dfu_get_status(struct usb_device *udev,
340 struct dfu_status *status)
341 {
342 int ret;
343
344 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
345 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
346 0, 0, status, sizeof(struct dfu_status),
347 USB_CTRL_GET_TIMEOUT);
348 return ret;
349 }
350
351 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
352 {
353 int ret;
354
355 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
356 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
357 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
358 return ret;
359 }
360
361 /* Convert timeout from the DFU status to jiffies */
362 static inline unsigned long at76_get_timeout(struct dfu_status *s)
363 {
364 return msecs_to_jiffies((s->poll_timeout[2] << 16)
365 | (s->poll_timeout[1] << 8)
366 | (s->poll_timeout[0]));
367 }
368
369 /* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
370 * its value in jiffies in the MANIFEST_SYNC state. */
371 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
372 int manifest_sync_timeout)
373 {
374 u8 *block;
375 struct dfu_status dfu_stat_buf;
376 int ret = 0;
377 int need_dfu_state = 1;
378 int is_done = 0;
379 u8 dfu_state = 0;
380 u32 dfu_timeout = 0;
381 int bsize = 0;
382 int blockno = 0;
383
384 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
385 manifest_sync_timeout);
386
387 if (!size) {
388 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
389 return -EINVAL;
390 }
391
392 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
393 if (!block)
394 return -ENOMEM;
395
396 do {
397 if (need_dfu_state) {
398 ret = at76_dfu_get_state(udev, &dfu_state);
399 if (ret < 0) {
400 dev_printk(KERN_ERR, &udev->dev,
401 "cannot get DFU state: %d\n", ret);
402 goto exit;
403 }
404 need_dfu_state = 0;
405 }
406
407 switch (dfu_state) {
408 case STATE_DFU_DOWNLOAD_SYNC:
409 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
410 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
411 if (ret >= 0) {
412 dfu_state = dfu_stat_buf.state;
413 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
414 need_dfu_state = 0;
415 } else
416 dev_printk(KERN_ERR, &udev->dev,
417 "at76_dfu_get_status returned %d\n",
418 ret);
419 break;
420
421 case STATE_DFU_DOWNLOAD_BUSY:
422 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
423 need_dfu_state = 1;
424
425 at76_dbg(DBG_DFU, "DFU: Resetting device");
426 schedule_timeout_interruptible(dfu_timeout);
427 break;
428
429 case STATE_DFU_DOWNLOAD_IDLE:
430 at76_dbg(DBG_DFU, "DOWNLOAD...");
431 /* fall through */
432 case STATE_DFU_IDLE:
433 at76_dbg(DBG_DFU, "DFU IDLE");
434
435 bsize = min_t(int, size, FW_BLOCK_SIZE);
436 memcpy(block, buf, bsize);
437 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
438 "bsize = %4d, blockno = %2d", size, bsize,
439 blockno);
440 ret =
441 at76_load_int_fw_block(udev, blockno, block, bsize);
442 buf += bsize;
443 size -= bsize;
444 blockno++;
445
446 if (ret != bsize)
447 dev_printk(KERN_ERR, &udev->dev,
448 "at76_load_int_fw_block "
449 "returned %d\n", ret);
450 need_dfu_state = 1;
451 break;
452
453 case STATE_DFU_MANIFEST_SYNC:
454 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
455
456 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
457 if (ret < 0)
458 break;
459
460 dfu_state = dfu_stat_buf.state;
461 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
462 need_dfu_state = 0;
463
464 /* override the timeout from the status response,
465 needed for AT76C505A */
466 if (manifest_sync_timeout > 0)
467 dfu_timeout = manifest_sync_timeout;
468
469 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
470 schedule_timeout_interruptible(dfu_timeout);
471 break;
472
473 case STATE_DFU_MANIFEST:
474 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
475 is_done = 1;
476 break;
477
478 case STATE_DFU_MANIFEST_WAIT_RESET:
479 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
480 is_done = 1;
481 break;
482
483 case STATE_DFU_UPLOAD_IDLE:
484 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
485 break;
486
487 case STATE_DFU_ERROR:
488 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
489 ret = -EPIPE;
490 break;
491
492 default:
493 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
494 ret = -EINVAL;
495 break;
496 }
497 } while (!is_done && (ret >= 0));
498
499 exit:
500 kfree(block);
501 if (ret >= 0)
502 ret = 0;
503
504 return ret;
505 }
506
507 #define HEX2STR_BUFFERS 4
508 #define HEX2STR_MAX_LEN 64
509 #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
510
511 /* Convert binary data into hex string */
512 static char *hex2str(void *buf, int len)
513 {
514 static atomic_t a = ATOMIC_INIT(0);
515 static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
516 char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
517 char *obuf = ret;
518 u8 *ibuf = buf;
519
520 if (len > HEX2STR_MAX_LEN)
521 len = HEX2STR_MAX_LEN;
522
523 if (len <= 0) {
524 ret[0] = '\0';
525 return ret;
526 }
527
528 while (len--) {
529 *obuf++ = BIN2HEX(*ibuf >> 4);
530 *obuf++ = BIN2HEX(*ibuf & 0xf);
531 *obuf++ = '-';
532 ibuf++;
533 }
534 *(--obuf) = '\0';
535
536 return ret;
537 }
538
539 #define MAC2STR_BUFFERS 4
540
541 static inline char *mac2str(u8 *mac)
542 {
543 static atomic_t a = ATOMIC_INIT(0);
544 static char bufs[MAC2STR_BUFFERS][6 * 3];
545 char *str;
546
547 str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)];
548 sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
549 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
550 return str;
551 }
552
553 /* LED trigger */
554 static int tx_activity;
555 static void at76_ledtrig_tx_timerfunc(unsigned long data);
556 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
557 DEFINE_LED_TRIGGER(ledtrig_tx);
558
559 static void at76_ledtrig_tx_timerfunc(unsigned long data)
560 {
561 static int tx_lastactivity;
562
563 if (tx_lastactivity != tx_activity) {
564 tx_lastactivity = tx_activity;
565 led_trigger_event(ledtrig_tx, LED_FULL);
566 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
567 } else
568 led_trigger_event(ledtrig_tx, LED_OFF);
569 }
570
571 static void at76_ledtrig_tx_activity(void)
572 {
573 tx_activity++;
574 if (!timer_pending(&ledtrig_tx_timer))
575 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
576 }
577
578 static int at76_remap(struct usb_device *udev)
579 {
580 int ret;
581 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
582 USB_TYPE_VENDOR | USB_DIR_OUT |
583 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
584 USB_CTRL_GET_TIMEOUT);
585 if (ret < 0)
586 return ret;
587 return 0;
588 }
589
590 static int at76_get_op_mode(struct usb_device *udev)
591 {
592 int ret;
593 u8 saved;
594 u8 *op_mode;
595
596 op_mode = kmalloc(1, GFP_NOIO);
597 if (!op_mode)
598 return -ENOMEM;
599 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
600 USB_TYPE_VENDOR | USB_DIR_IN |
601 USB_RECIP_INTERFACE, 0x01, 0, &op_mode, 1,
602 USB_CTRL_GET_TIMEOUT);
603 saved = *op_mode;
604 kfree(op_mode);
605
606 if (ret < 0)
607 return ret;
608 else if (ret < 1)
609 return -EIO;
610 else
611 return saved;
612 }
613
614 /* Load a block of the second ("external") part of the firmware */
615 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
616 void *block, int size)
617 {
618 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
619 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
620 0x0802, blockno, block, size,
621 USB_CTRL_GET_TIMEOUT);
622 }
623
624 static inline int at76_get_hw_cfg(struct usb_device *udev,
625 union at76_hwcfg *buf, int buf_size)
626 {
627 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
628 USB_TYPE_VENDOR | USB_DIR_IN |
629 USB_RECIP_INTERFACE, 0x0a02, 0,
630 buf, buf_size, USB_CTRL_GET_TIMEOUT);
631 }
632
633 /* Intersil boards use a different "value" for GetHWConfig requests */
634 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
635 union at76_hwcfg *buf, int buf_size)
636 {
637 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
638 USB_TYPE_VENDOR | USB_DIR_IN |
639 USB_RECIP_INTERFACE, 0x0902, 0,
640 buf, buf_size, USB_CTRL_GET_TIMEOUT);
641 }
642
643 /* Get the hardware configuration for the adapter and put it to the appropriate
644 * fields of 'priv' (the GetHWConfig request and interpretation of the result
645 * depends on the board type) */
646 static int at76_get_hw_config(struct at76_priv *priv)
647 {
648 int ret;
649 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
650
651 if (!hwcfg)
652 return -ENOMEM;
653
654 if (at76_is_intersil(priv->board_type)) {
655 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
656 sizeof(hwcfg->i));
657 if (ret < 0)
658 goto exit;
659 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
660 priv->regulatory_domain = hwcfg->i.regulatory_domain;
661 } else if (at76_is_503rfmd(priv->board_type)) {
662 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
663 if (ret < 0)
664 goto exit;
665 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
666 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
667 } else {
668 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
669 if (ret < 0)
670 goto exit;
671 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
672 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
673 }
674
675 exit:
676 kfree(hwcfg);
677 if (ret < 0)
678 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
679 wiphy_name(priv->hw->wiphy), ret);
680
681 return ret;
682 }
683
684 static struct reg_domain const *at76_get_reg_domain(u16 code)
685 {
686 int i;
687 static struct reg_domain const fd_tab[] = {
688 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */
689 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
690 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */
691 { 0x31, "Spain", 0x600 }, /* ch 10-11 */
692 { 0x32, "France", 0x1e00 }, /* ch 10-13 */
693 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */
694 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */
695 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */
696 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */
697 };
698
699 /* Last entry is fallback for unknown domain code */
700 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
701 if (code == fd_tab[i].code)
702 break;
703
704 return &fd_tab[i];
705 }
706
707 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
708 int buf_size)
709 {
710 int ret;
711
712 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
713 USB_TYPE_VENDOR | USB_DIR_IN |
714 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
715 USB_CTRL_GET_TIMEOUT);
716 if (ret >= 0 && ret != buf_size)
717 return -EIO;
718 return ret;
719 }
720
721 /* Return positive number for status, negative for an error */
722 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
723 {
724 u8 *stat_buf;
725 int ret;
726
727 stat_buf = kmalloc(40, GFP_NOIO);
728 if (!stat_buf)
729 return -ENOMEM;
730
731 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
732 USB_TYPE_VENDOR | USB_DIR_IN |
733 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
734 sizeof(stat_buf), USB_CTRL_GET_TIMEOUT);
735 if (ret >= 0)
736 ret = stat_buf[5];
737 kfree(stat_buf);
738
739 return ret;
740 }
741
742 #define MAKE_CMD_CASE(c) case (c): return #c
743
744 static const char *at76_get_cmd_string(u8 cmd_status)
745 {
746 switch (cmd_status) {
747 MAKE_CMD_CASE(CMD_SET_MIB);
748 MAKE_CMD_CASE(CMD_GET_MIB);
749 MAKE_CMD_CASE(CMD_SCAN);
750 MAKE_CMD_CASE(CMD_JOIN);
751 MAKE_CMD_CASE(CMD_START_IBSS);
752 MAKE_CMD_CASE(CMD_RADIO_ON);
753 MAKE_CMD_CASE(CMD_RADIO_OFF);
754 MAKE_CMD_CASE(CMD_STARTUP);
755 }
756
757 return "UNKNOWN";
758 }
759
760 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
761 int buf_size)
762 {
763 int ret;
764 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
765 buf_size, GFP_KERNEL);
766
767 if (!cmd_buf)
768 return -ENOMEM;
769
770 cmd_buf->cmd = cmd;
771 cmd_buf->reserved = 0;
772 cmd_buf->size = cpu_to_le16(buf_size);
773 memcpy(cmd_buf->data, buf, buf_size);
774
775 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
776 "issuing command %s (0x%02x)",
777 at76_get_cmd_string(cmd), cmd);
778
779 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
780 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
781 0, 0, cmd_buf,
782 sizeof(struct at76_command) + buf_size,
783 USB_CTRL_GET_TIMEOUT);
784 kfree(cmd_buf);
785 return ret;
786 }
787
788 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
789 static const char *at76_get_cmd_status_string(u8 cmd_status)
790 {
791 switch (cmd_status) {
792 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
793 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
794 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
795 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
796 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
797 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
798 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
799 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
800 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
801 }
802
803 return "UNKNOWN";
804 }
805
806 /* Wait until the command is completed */
807 static int at76_wait_completion(struct at76_priv *priv, int cmd)
808 {
809 int status = 0;
810 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
811
812 do {
813 status = at76_get_cmd_status(priv->udev, cmd);
814 if (status < 0) {
815 printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
816 wiphy_name(priv->hw->wiphy), status);
817 break;
818 }
819
820 at76_dbg(DBG_WAIT_COMPLETE,
821 "%s: Waiting on cmd %d, status = %d (%s)",
822 wiphy_name(priv->hw->wiphy), cmd, status,
823 at76_get_cmd_status_string(status));
824
825 if (status != CMD_STATUS_IN_PROGRESS
826 && status != CMD_STATUS_IDLE)
827 break;
828
829 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
830 if (time_after(jiffies, timeout)) {
831 printk(KERN_ERR
832 "%s: completion timeout for command %d\n",
833 wiphy_name(priv->hw->wiphy), cmd);
834 status = -ETIMEDOUT;
835 break;
836 }
837 } while (1);
838
839 return status;
840 }
841
842 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
843 {
844 int ret;
845
846 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
847 offsetof(struct set_mib_buffer,
848 data) + buf->size);
849 if (ret < 0)
850 return ret;
851
852 ret = at76_wait_completion(priv, CMD_SET_MIB);
853 if (ret != CMD_STATUS_COMPLETE) {
854 printk(KERN_INFO
855 "%s: set_mib: at76_wait_completion failed "
856 "with %d\n", wiphy_name(priv->hw->wiphy), ret);
857 ret = -EIO;
858 }
859
860 return ret;
861 }
862
863 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
864 static int at76_set_radio(struct at76_priv *priv, int enable)
865 {
866 int ret;
867 int cmd;
868
869 if (priv->radio_on == enable)
870 return 0;
871
872 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
873
874 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
875 if (ret < 0)
876 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
877 wiphy_name(priv->hw->wiphy), cmd, ret);
878 else
879 ret = 1;
880
881 priv->radio_on = enable;
882 return ret;
883 }
884
885 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
886 static int at76_set_pm_mode(struct at76_priv *priv)
887 {
888 int ret = 0;
889
890 priv->mib_buf.type = MIB_MAC_MGMT;
891 priv->mib_buf.size = 1;
892 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
893 priv->mib_buf.data.byte = priv->pm_mode;
894
895 ret = at76_set_mib(priv, &priv->mib_buf);
896 if (ret < 0)
897 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
898 wiphy_name(priv->hw->wiphy), ret);
899
900 return ret;
901 }
902
903 static int at76_set_preamble(struct at76_priv *priv, u8 type)
904 {
905 int ret = 0;
906
907 priv->mib_buf.type = MIB_LOCAL;
908 priv->mib_buf.size = 1;
909 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
910 priv->mib_buf.data.byte = type;
911
912 ret = at76_set_mib(priv, &priv->mib_buf);
913 if (ret < 0)
914 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
915 wiphy_name(priv->hw->wiphy), ret);
916
917 return ret;
918 }
919
920 static int at76_set_frag(struct at76_priv *priv, u16 size)
921 {
922 int ret = 0;
923
924 priv->mib_buf.type = MIB_MAC;
925 priv->mib_buf.size = 2;
926 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
927 priv->mib_buf.data.word = cpu_to_le16(size);
928
929 ret = at76_set_mib(priv, &priv->mib_buf);
930 if (ret < 0)
931 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
932 wiphy_name(priv->hw->wiphy), ret);
933
934 return ret;
935 }
936
937 static int at76_set_rts(struct at76_priv *priv, u16 size)
938 {
939 int ret = 0;
940
941 priv->mib_buf.type = MIB_MAC;
942 priv->mib_buf.size = 2;
943 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
944 priv->mib_buf.data.word = cpu_to_le16(size);
945
946 ret = at76_set_mib(priv, &priv->mib_buf);
947 if (ret < 0)
948 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
949 wiphy_name(priv->hw->wiphy), ret);
950
951 return ret;
952 }
953
954 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
955 {
956 int ret = 0;
957
958 priv->mib_buf.type = MIB_LOCAL;
959 priv->mib_buf.size = 1;
960 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
961 priv->mib_buf.data.byte = onoff;
962
963 ret = at76_set_mib(priv, &priv->mib_buf);
964 if (ret < 0)
965 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
966 wiphy_name(priv->hw->wiphy), ret);
967
968 return ret;
969 }
970
971 static int at76_set_tkip_bssid(struct at76_priv *priv, const void *addr)
972 {
973 int ret = 0;
974
975 priv->mib_buf.type = MIB_MAC_ENCRYPTION;
976 priv->mib_buf.size = ETH_ALEN;
977 priv->mib_buf.index = offsetof(struct mib_mac_encryption, tkip_bssid);
978 memcpy(priv->mib_buf.data.addr, addr, ETH_ALEN);
979
980 ret = at76_set_mib(priv, &priv->mib_buf);
981 if (ret < 0)
982 printk(KERN_ERR "%s: set_mib (MAC_ENCRYPTION, tkip_bssid) failed: %d\n",
983 wiphy_name(priv->hw->wiphy), ret);
984
985 return ret;
986 }
987
988 static int at76_reset_rsc(struct at76_priv *priv)
989 {
990 int ret = 0;
991
992 priv->mib_buf.type = MIB_MAC_ENCRYPTION;
993 priv->mib_buf.size = 4 * 8;
994 priv->mib_buf.index = offsetof(struct mib_mac_encryption, key_rsc);
995 memset(priv->mib_buf.data.data, 0 , priv->mib_buf.size);
996
997 ret = at76_set_mib(priv, &priv->mib_buf);
998 if (ret < 0)
999 printk(KERN_ERR "%s: set_mib (MAC_ENCRYPTION, key_rsc) failed: %d\n",
1000 wiphy_name(priv->hw->wiphy), ret);
1001
1002 return ret;
1003 }
1004
1005 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
1006 {
1007 int i;
1008 int ret;
1009 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
1010 GFP_KERNEL);
1011
1012 if (!m)
1013 return;
1014
1015 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
1016 sizeof(struct mib_mac_addr));
1017 if (ret < 0) {
1018 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
1019 wiphy_name(priv->hw->wiphy), ret);
1020 goto exit;
1021 }
1022
1023 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %s res 0x%x 0x%x",
1024 wiphy_name(priv->hw->wiphy),
1025 mac2str(m->mac_addr), m->res[0], m->res[1]);
1026 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
1027 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %s, "
1028 "status %d", wiphy_name(priv->hw->wiphy), i,
1029 mac2str(m->group_addr[i]), m->group_addr_status[i]);
1030 exit:
1031 kfree(m);
1032 }
1033
1034 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
1035 {
1036 int i;
1037 int ret;
1038 int key_len;
1039 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
1040
1041 if (!m)
1042 return;
1043
1044 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
1045 sizeof(struct mib_mac_wep));
1046 if (ret < 0) {
1047 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
1048 wiphy_name(priv->hw->wiphy), ret);
1049 goto exit;
1050 }
1051
1052 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1053 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1054 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
1055 m->privacy_invoked, m->wep_default_key_id,
1056 m->wep_key_mapping_len, m->exclude_unencrypted,
1057 le32_to_cpu(m->wep_icv_error_count),
1058 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1059 m->wep_default_key_id);
1060
1061 key_len = (m->encryption_level == 1) ?
1062 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1063
1064 for (i = 0; i < WEP_KEYS; i++)
1065 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1066 wiphy_name(priv->hw->wiphy), i,
1067 hex2str(m->wep_default_keyvalue[i], key_len));
1068 exit:
1069 kfree(m);
1070 }
1071
1072 static void at76_dump_mib_mac_encryption(struct at76_priv *priv)
1073 {
1074 int i;
1075 int ret;
1076 /*int key_len;*/
1077 struct mib_mac_encryption *m;
1078
1079 m = kmalloc(sizeof(struct mib_mac_encryption), GFP_KERNEL);
1080 if (!m)
1081 return;
1082
1083 ret = at76_get_mib(priv->udev, MIB_MAC_ENCRYPTION, m,
1084 sizeof(struct mib_mac_encryption));
1085 if (ret < 0) {
1086 dev_err(&priv->udev->dev,
1087 "%s: at76_get_mib (MAC_ENCRYPTION) failed: %d\n",
1088 wiphy_name(priv->hw->wiphy), ret);
1089 goto exit;
1090 }
1091
1092 at76_dbg(DBG_MIB,
1093 "%s: MIB MAC_ENCRYPTION: tkip_bssid %s priv_invoked %u "
1094 "ciph_key_id %u grp_key_id %u excl_unencr %u "
1095 "ckip_key_perm %u wep_icv_err %u wep_excluded %u",
1096 wiphy_name(priv->hw->wiphy), mac2str(m->tkip_bssid),
1097 m->privacy_invoked, m->cipher_default_key_id,
1098 m->cipher_default_group_key_id, m->exclude_unencrypted,
1099 m->ckip_key_permutation,
1100 le32_to_cpu(m->wep_icv_error_count),
1101 le32_to_cpu(m->wep_excluded_count));
1102
1103 /*key_len = (m->encryption_level == 1) ?
1104 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;*/
1105
1106 for (i = 0; i < CIPHER_KEYS; i++)
1107 at76_dbg(DBG_MIB, "%s: MIB MAC_ENCRYPTION: key %d: %s",
1108 wiphy_name(priv->hw->wiphy), i,
1109 hex2str(m->cipher_default_keyvalue[i],
1110 CIPHER_KEY_LEN));
1111 exit:
1112 kfree(m);
1113 }
1114
1115 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1116 {
1117 int ret;
1118 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1119 GFP_KERNEL);
1120
1121 if (!m)
1122 return;
1123
1124 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1125 sizeof(struct mib_mac_mgmt));
1126 if (ret < 0) {
1127 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1128 wiphy_name(priv->hw->wiphy), ret);
1129 goto exit;
1130 }
1131
1132 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1133 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1134 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1135 "current_bssid %s current_essid %s current_bss_type %d "
1136 "pm_mode %d ibss_change %d res %d "
1137 "multi_domain_capability_implemented %d "
1138 "international_roaming %d country_string %.3s",
1139 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1140 le16_to_cpu(m->CFP_max_duration),
1141 le16_to_cpu(m->medium_occupancy_limit),
1142 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1143 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1144 m->CFP_period, mac2str(m->current_bssid),
1145 hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1146 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1147 m->res, m->multi_domain_capability_implemented,
1148 m->multi_domain_capability_enabled, m->country_string);
1149 exit:
1150 kfree(m);
1151 }
1152
1153 static void at76_dump_mib_mac(struct at76_priv *priv)
1154 {
1155 int ret;
1156 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1157
1158 if (!m)
1159 return;
1160
1161 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1162 if (ret < 0) {
1163 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1164 wiphy_name(priv->hw->wiphy), ret);
1165 goto exit;
1166 }
1167
1168 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1169 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1170 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1171 "scan_type %d scan_channel %d probe_delay %u "
1172 "min_channel_time %d max_channel_time %d listen_int %d "
1173 "desired_ssid %s desired_bssid %s desired_bsstype %d",
1174 wiphy_name(priv->hw->wiphy),
1175 le32_to_cpu(m->max_tx_msdu_lifetime),
1176 le32_to_cpu(m->max_rx_lifetime),
1177 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1178 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1179 m->short_retry_time, m->long_retry_time, m->scan_type,
1180 m->scan_channel, le16_to_cpu(m->probe_delay),
1181 le16_to_cpu(m->min_channel_time),
1182 le16_to_cpu(m->max_channel_time),
1183 le16_to_cpu(m->listen_interval),
1184 hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1185 mac2str(m->desired_bssid), m->desired_bsstype);
1186 exit:
1187 kfree(m);
1188 }
1189
1190 static void at76_dump_mib_phy(struct at76_priv *priv)
1191 {
1192 int ret;
1193 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1194
1195 if (!m)
1196 return;
1197
1198 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1199 if (ret < 0) {
1200 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1201 wiphy_name(priv->hw->wiphy), ret);
1202 goto exit;
1203 }
1204
1205 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1206 "sifs_time %d preamble_length %d plcp_header_length %d "
1207 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1208 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1209 "phy_type %d current_reg_domain %d",
1210 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1211 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1212 le16_to_cpu(m->preamble_length),
1213 le16_to_cpu(m->plcp_header_length),
1214 le16_to_cpu(m->mpdu_max_length),
1215 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1216 m->operation_rate_set[1], m->operation_rate_set[2],
1217 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1218 m->phy_type, m->current_reg_domain);
1219 exit:
1220 kfree(m);
1221 }
1222
1223 static void at76_dump_mib_local(struct at76_priv *priv)
1224 {
1225 int ret;
1226 struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1227
1228 if (!m)
1229 return;
1230
1231 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1232 if (ret < 0) {
1233 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1234 wiphy_name(priv->hw->wiphy), ret);
1235 goto exit;
1236 }
1237
1238 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1239 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1240 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1241 m->beacon_enable,
1242 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1243 m->preamble_type);
1244 exit:
1245 kfree(m);
1246 }
1247
1248 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1249 {
1250 int ret;
1251 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1252
1253 if (!m)
1254 return;
1255
1256 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1257 sizeof(struct mib_mdomain));
1258 if (ret < 0) {
1259 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1260 wiphy_name(priv->hw->wiphy), ret);
1261 goto exit;
1262 }
1263
1264 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1265 wiphy_name(priv->hw->wiphy),
1266 hex2str(m->channel_list, sizeof(m->channel_list)));
1267
1268 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1269 wiphy_name(priv->hw->wiphy),
1270 hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1271 exit:
1272 kfree(m);
1273 }
1274
1275 /* Enable monitor mode */
1276 static int at76_start_monitor(struct at76_priv *priv)
1277 {
1278 struct at76_req_scan scan;
1279 int ret;
1280
1281 memset(&scan, 0, sizeof(struct at76_req_scan));
1282 memset(scan.bssid, 0xff, ETH_ALEN);
1283
1284 scan.channel = priv->channel;
1285 scan.scan_type = SCAN_TYPE_PASSIVE;
1286 scan.international_scan = 0;
1287
1288 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1289 if (ret >= 0)
1290 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1291
1292 return ret;
1293 }
1294
1295 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1296 likely to compensate a flaw in the AT76C503A USB part ... */
1297 static inline int at76_calc_padding(int wlen)
1298 {
1299 /* add the USB TX header */
1300 wlen += AT76_TX_HDRLEN;
1301
1302 wlen = wlen % 64;
1303
1304 if (wlen < 50)
1305 return 50 - wlen;
1306
1307 if (wlen >= 61)
1308 return 64 + 50 - wlen;
1309
1310 return 0;
1311 }
1312
1313 static void at76_rx_callback(struct urb *urb)
1314 {
1315 struct at76_priv *priv = urb->context;
1316
1317 priv->rx_tasklet.data = (unsigned long)urb;
1318 tasklet_schedule(&priv->rx_tasklet);
1319 return;
1320 }
1321
1322 static int at76_submit_rx_urb(struct at76_priv *priv)
1323 {
1324 int ret;
1325 int size;
1326 struct sk_buff *skb = priv->rx_skb;
1327
1328 if (!priv->rx_urb) {
1329 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
1330 wiphy_name(priv->hw->wiphy), __func__);
1331 return -EFAULT;
1332 }
1333
1334 if (!skb) {
1335 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1336 if (!skb) {
1337 printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
1338 wiphy_name(priv->hw->wiphy));
1339 ret = -ENOMEM;
1340 goto exit;
1341 }
1342 priv->rx_skb = skb;
1343 } else {
1344 skb_push(skb, skb_headroom(skb));
1345 skb_trim(skb, 0);
1346 }
1347
1348 size = skb_tailroom(skb);
1349 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1350 skb_put(skb, size), size, at76_rx_callback, priv);
1351 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1352 if (ret < 0) {
1353 if (ret == -ENODEV)
1354 at76_dbg(DBG_DEVSTART,
1355 "usb_submit_urb returned -ENODEV");
1356 else
1357 printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
1358 wiphy_name(priv->hw->wiphy), ret);
1359 }
1360
1361 exit:
1362 if (ret < 0 && ret != -ENODEV)
1363 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
1364 "driver and/or power cycle the device\n",
1365 wiphy_name(priv->hw->wiphy));
1366
1367 return ret;
1368 }
1369
1370 /* Download external firmware */
1371 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1372 {
1373 int ret;
1374 int op_mode;
1375 int blockno = 0;
1376 int bsize;
1377 u8 *block;
1378 u8 *buf = fwe->extfw;
1379 int size = fwe->extfw_size;
1380
1381 if (!buf || !size)
1382 return -ENOENT;
1383
1384 op_mode = at76_get_op_mode(udev);
1385 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1386
1387 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1388 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1389 op_mode);
1390 return -EINVAL;
1391 }
1392
1393 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1394 if (!block)
1395 return -ENOMEM;
1396
1397 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1398
1399 /* for fw >= 0.100, the device needs an extra empty block */
1400 do {
1401 bsize = min_t(int, size, FW_BLOCK_SIZE);
1402 memcpy(block, buf, bsize);
1403 at76_dbg(DBG_DEVSTART,
1404 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1405 size, bsize, blockno);
1406 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1407 if (ret != bsize) {
1408 dev_printk(KERN_ERR, &udev->dev,
1409 "loading %dth firmware block failed: %d\n",
1410 blockno, ret);
1411 goto exit;
1412 }
1413 buf += bsize;
1414 size -= bsize;
1415 blockno++;
1416 } while (bsize > 0);
1417
1418 if (at76_is_505a(fwe->board_type)) {
1419 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1420 schedule_timeout_interruptible(HZ / 5 + 1);
1421 }
1422
1423 exit:
1424 kfree(block);
1425 if (ret < 0)
1426 dev_printk(KERN_ERR, &udev->dev,
1427 "downloading external firmware failed: %d\n", ret);
1428 return ret;
1429 }
1430
1431 /* Download internal firmware */
1432 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1433 {
1434 int ret;
1435 int need_remap = !at76_is_505a(fwe->board_type);
1436
1437 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1438 need_remap ? 0 : 2 * HZ);
1439
1440 if (ret < 0) {
1441 dev_printk(KERN_ERR, &udev->dev,
1442 "downloading internal fw failed with %d\n", ret);
1443 goto exit;
1444 }
1445
1446 at76_dbg(DBG_DEVSTART, "sending REMAP");
1447
1448 /* no REMAP for 505A (see SF driver) */
1449 if (need_remap) {
1450 ret = at76_remap(udev);
1451 if (ret < 0) {
1452 dev_printk(KERN_ERR, &udev->dev,
1453 "sending REMAP failed with %d\n", ret);
1454 goto exit;
1455 }
1456 }
1457
1458 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1459 schedule_timeout_interruptible(2 * HZ + 1);
1460 usb_reset_device(udev);
1461
1462 exit:
1463 return ret;
1464 }
1465
1466 static int at76_startup_device(struct at76_priv *priv)
1467 {
1468 struct at76_card_config *ccfg = &priv->card_config;
1469 int ret;
1470
1471 at76_dbg(DBG_PARAMS,
1472 "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1473 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1474 priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1475 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1476 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1477 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1478 at76_dbg(DBG_PARAMS,
1479 "%s param: preamble %s rts %d retry %d frag %d "
1480 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1481 preambles[priv->preamble_type], priv->rts_threshold,
1482 priv->short_retry_limit, priv->frag_threshold,
1483 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1484 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1485 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1486 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1487 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1488 at76_dbg(DBG_PARAMS,
1489 "%s param: pm_mode %d pm_period %d auth_mode %s "
1490 "scan_times %d %d scan_mode %s",
1491 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1492 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1493 priv->scan_min_time, priv->scan_max_time,
1494 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1495
1496 memset(ccfg, 0, sizeof(struct at76_card_config));
1497 ccfg->promiscuous_mode = 0;
1498 ccfg->short_retry_limit = priv->short_retry_limit;
1499
1500 if (priv->wep_enabled) {
1501 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1502 ccfg->encryption_type = 2;
1503 else
1504 ccfg->encryption_type = 1;
1505
1506 /* jal: always exclude unencrypted if WEP is active */
1507 ccfg->exclude_unencrypted = 1;
1508 } else {
1509 ccfg->exclude_unencrypted = 0;
1510 ccfg->encryption_type = 0;
1511 }
1512
1513 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1514 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1515
1516 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1517 /* jal: really needed, we do a set_mib for autorate later ??? */
1518 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1519 ccfg->channel = priv->channel;
1520 ccfg->privacy_invoked = priv->wep_enabled;
1521 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1522 ccfg->ssid_len = priv->essid_size;
1523
1524 ccfg->wep_default_key_id = priv->wep_key_id;
1525 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1526 sizeof(priv->wep_keys));
1527
1528 ccfg->short_preamble = priv->preamble_type;
1529 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1530
1531 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1532 sizeof(struct at76_card_config));
1533 if (ret < 0) {
1534 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1535 wiphy_name(priv->hw->wiphy), ret);
1536 return ret;
1537 }
1538
1539 at76_wait_completion(priv, CMD_STARTUP);
1540
1541 /* remove BSSID from previous run */
1542 memset(priv->bssid, 0, ETH_ALEN);
1543
1544 if (at76_set_radio(priv, 1) == 1)
1545 at76_wait_completion(priv, CMD_RADIO_ON);
1546
1547 ret = at76_set_preamble(priv, priv->preamble_type);
1548 if (ret < 0)
1549 return ret;
1550
1551 ret = at76_set_frag(priv, priv->frag_threshold);
1552 if (ret < 0)
1553 return ret;
1554
1555 ret = at76_set_rts(priv, priv->rts_threshold);
1556 if (ret < 0)
1557 return ret;
1558
1559 ret = at76_set_autorate_fallback(priv,
1560 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1561 if (ret < 0)
1562 return ret;
1563
1564 ret = at76_set_pm_mode(priv);
1565 if (ret < 0)
1566 return ret;
1567
1568 if (at76_debug & DBG_MIB) {
1569 at76_dump_mib_mac(priv);
1570 at76_dump_mib_mac_addr(priv);
1571 at76_dump_mib_mac_mgmt(priv);
1572 at76_dump_mib_mac_wep(priv);
1573 at76_dump_mib_mdomain(priv);
1574 at76_dump_mib_phy(priv);
1575 at76_dump_mib_local(priv);
1576 }
1577
1578 return 0;
1579 }
1580
1581 /* Enable or disable promiscuous mode */
1582 static void at76_work_set_promisc(struct work_struct *work)
1583 {
1584 struct at76_priv *priv = container_of(work, struct at76_priv,
1585 work_set_promisc);
1586 int ret = 0;
1587
1588 mutex_lock(&priv->mtx);
1589
1590 priv->mib_buf.type = MIB_LOCAL;
1591 priv->mib_buf.size = 1;
1592 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1593 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1594
1595 ret = at76_set_mib(priv, &priv->mib_buf);
1596 if (ret < 0)
1597 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
1598 wiphy_name(priv->hw->wiphy), ret);
1599
1600 mutex_unlock(&priv->mtx);
1601 }
1602
1603 /* Submit Rx urb back to the device */
1604 static void at76_work_submit_rx(struct work_struct *work)
1605 {
1606 struct at76_priv *priv = container_of(work, struct at76_priv,
1607 work_submit_rx);
1608
1609 mutex_lock(&priv->mtx);
1610 at76_submit_rx_urb(priv);
1611 mutex_unlock(&priv->mtx);
1612 }
1613
1614 static void at76_rx_tasklet(unsigned long param)
1615 {
1616 struct urb *urb = (struct urb *)param;
1617 struct at76_priv *priv = urb->context;
1618 struct at76_rx_buffer *buf;
1619 struct ieee80211_rx_status rx_status = { 0 };
1620
1621 if (priv->device_unplugged) {
1622 at76_dbg(DBG_DEVSTART, "device unplugged");
1623 if (urb)
1624 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1625 return;
1626 }
1627
1628 if (!priv->rx_skb || !priv->rx_skb->data)
1629 return;
1630
1631 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1632
1633 if (urb->status != 0) {
1634 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1635 at76_dbg(DBG_URB,
1636 "%s %s: - nonzero Rx bulk status received: %d",
1637 __func__, wiphy_name(priv->hw->wiphy),
1638 urb->status);
1639 return;
1640 }
1641
1642 at76_dbg(DBG_RX_ATMEL_HDR,
1643 "%s: rx frame: rate %d rssi %d noise %d link %d",
1644 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1645 buf->noise_level, buf->link_quality);
1646
1647 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength) + AT76_RX_HDRLEN);
1648 at76_dbg_dump(DBG_RX_DATA, &priv->rx_skb->data[AT76_RX_HDRLEN],
1649 priv->rx_skb->len, "RX: len=%d",
1650 (int)(priv->rx_skb->len - AT76_RX_HDRLEN));
1651
1652 rx_status.signal = buf->rssi;
1653 /* FIXME: is rate_idx still present in structure? */
1654 rx_status.rate_idx = buf->rx_rate;
1655 rx_status.flag |= RX_FLAG_DECRYPTED;
1656 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1657
1658 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1659 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1660 priv->rx_skb->len, priv->rx_skb->data_len);
1661 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb, &rx_status);
1662
1663 /* Use a new skb for the next receive */
1664 priv->rx_skb = NULL;
1665
1666 at76_submit_rx_urb(priv);
1667 }
1668
1669 /* Load firmware into kernel memory and parse it */
1670 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1671 enum board_type board_type)
1672 {
1673 int ret;
1674 char *str;
1675 struct at76_fw_header *fwh;
1676 struct fwentry *fwe = &firmwares[board_type];
1677
1678 mutex_lock(&fw_mutex);
1679
1680 if (fwe->loaded) {
1681 at76_dbg(DBG_FW, "re-using previously loaded fw");
1682 goto exit;
1683 }
1684
1685 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1686 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1687 if (ret < 0) {
1688 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1689 fwe->fwname);
1690 dev_printk(KERN_ERR, &udev->dev,
1691 "you may need to download the firmware from "
1692 "http://developer.berlios.de/projects/at76c503a/\n");
1693 goto exit;
1694 }
1695
1696 at76_dbg(DBG_FW, "got it.");
1697 fwh = (struct at76_fw_header *)(fwe->fw->data);
1698
1699 if (fwe->fw->size <= sizeof(*fwh)) {
1700 dev_printk(KERN_ERR, &udev->dev,
1701 "firmware is too short (0x%zx)\n", fwe->fw->size);
1702 goto exit;
1703 }
1704
1705 /* CRC currently not checked */
1706 fwe->board_type = le32_to_cpu(fwh->board_type);
1707 if (fwe->board_type != board_type) {
1708 dev_printk(KERN_ERR, &udev->dev,
1709 "board type mismatch, requested %u, got %u\n",
1710 board_type, fwe->board_type);
1711 goto exit;
1712 }
1713
1714 fwe->fw_version.major = fwh->major;
1715 fwe->fw_version.minor = fwh->minor;
1716 fwe->fw_version.patch = fwh->patch;
1717 fwe->fw_version.build = fwh->build;
1718
1719 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1720 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1721 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1722 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1723 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1724
1725 fwe->loaded = 1;
1726
1727 dev_printk(KERN_DEBUG, &udev->dev,
1728 "using firmware %s (version %d.%d.%d-%d)\n",
1729 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1730
1731 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1732 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1733 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1734 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1735
1736 exit:
1737 mutex_unlock(&fw_mutex);
1738
1739 if (fwe->loaded)
1740 return fwe;
1741 else
1742 return NULL;
1743 }
1744
1745 static void at76_mac80211_tx_callback(struct urb *urb)
1746 {
1747 struct at76_priv *priv = urb->context;
1748 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1749
1750 at76_dbg(DBG_MAC80211, "%s()", __func__);
1751
1752 switch (urb->status) {
1753 case 0:
1754 /* success */
1755 /* FIXME:
1756 * is the frame really ACKed when tx_callback is called ? */
1757 info->flags |= IEEE80211_TX_STAT_ACK;
1758 break;
1759 case -ENOENT:
1760 case -ECONNRESET:
1761 /* fail, urb has been unlinked */
1762 /* FIXME: add error message */
1763 break;
1764 default:
1765 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1766 __func__, urb->status);
1767 break;
1768 }
1769
1770 memset(&info->status, 0, sizeof(info->status));
1771
1772 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1773
1774 priv->tx_skb = NULL;
1775
1776 ieee80211_wake_queues(priv->hw);
1777 }
1778
1779 static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1780 {
1781 struct at76_priv *priv = hw->priv;
1782 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1783 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1784 int padding, submit_len, ret;
1785
1786 at76_dbg(DBG_MAC80211, "%s()", __func__);
1787
1788 if (priv->tx_urb->status == -EINPROGRESS) {
1789 printk(KERN_ERR "%s: %s called while tx urb is pending\n",
1790 wiphy_name(priv->hw->wiphy), __func__);
1791 return NETDEV_TX_BUSY;
1792 }
1793
1794 ieee80211_stop_queues(hw);
1795
1796 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
1797
1798 WARN_ON(priv->tx_skb != NULL);
1799
1800 priv->tx_skb = skb;
1801 padding = at76_calc_padding(skb->len);
1802 submit_len = AT76_TX_HDRLEN + skb->len + padding;
1803
1804 /* setup 'Atmel' header */
1805 memset(tx_buffer, 0, sizeof(*tx_buffer));
1806 tx_buffer->padding = padding;
1807 tx_buffer->wlength = cpu_to_le16(skb->len);
1808 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1809 if (FIRMWARE_IS_WPA(priv->fw_version) && info->control.hw_key) {
1810 tx_buffer->key_id = (info->control.hw_key->keyidx);
1811 tx_buffer->cipher_type =
1812 priv->keys[info->control.hw_key->keyidx].cipher;
1813 tx_buffer->cipher_length =
1814 priv->keys[info->control.hw_key->keyidx].keylen;
1815 tx_buffer->reserved = 0;
1816 } else {
1817 tx_buffer->key_id = 0;
1818 tx_buffer->cipher_type = 0;
1819 tx_buffer->cipher_length = 0;
1820 tx_buffer->reserved = 0;
1821 };
1822 /* memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved)); */
1823 memcpy(tx_buffer->packet, skb->data, skb->len);
1824
1825 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1826 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1827 tx_buffer->padding, tx_buffer->tx_rate);
1828
1829 /* send stuff */
1830 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1831 "%s(): tx_buffer %d bytes:", __func__, submit_len);
1832 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1833 submit_len, at76_mac80211_tx_callback, priv);
1834 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1835 if (ret) {
1836 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1837 wiphy_name(priv->hw->wiphy), ret);
1838 if (ret == -EINVAL)
1839 printk(KERN_ERR
1840 "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
1841 wiphy_name(priv->hw->wiphy), priv->tx_urb,
1842 priv->tx_urb->hcpriv, priv->tx_urb->complete);
1843 }
1844
1845 return 0;
1846 }
1847
1848 static int at76_mac80211_start(struct ieee80211_hw *hw)
1849 {
1850 struct at76_priv *priv = hw->priv;
1851 int ret;
1852
1853 at76_dbg(DBG_MAC80211, "%s()", __func__);
1854
1855 mutex_lock(&priv->mtx);
1856
1857 ret = at76_submit_rx_urb(priv);
1858 if (ret < 0) {
1859 printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
1860 wiphy_name(priv->hw->wiphy), ret);
1861 goto error;
1862 }
1863
1864 at76_startup_device(priv);
1865
1866 at76_start_monitor(priv);
1867
1868 error:
1869 mutex_unlock(&priv->mtx);
1870
1871 return 0;
1872 }
1873
1874 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1875 {
1876 struct at76_priv *priv = hw->priv;
1877
1878 at76_dbg(DBG_MAC80211, "%s()", __func__);
1879
1880 mutex_lock(&priv->mtx);
1881
1882 if (!priv->device_unplugged) {
1883 /* We are called by "ifconfig ethX down", not because the
1884 * device is not available anymore. */
1885 if (at76_set_radio(priv, 0) == 1)
1886 at76_wait_completion(priv, CMD_RADIO_ON);
1887
1888 /* We unlink rx_urb because at76_open() re-submits it.
1889 * If unplugged, at76_delete_device() takes care of it. */
1890 usb_kill_urb(priv->rx_urb);
1891 }
1892
1893 mutex_unlock(&priv->mtx);
1894 }
1895
1896 static int at76_add_interface(struct ieee80211_hw *hw,
1897 struct ieee80211_if_init_conf *conf)
1898 {
1899 struct at76_priv *priv = hw->priv;
1900 int ret = 0;
1901
1902 at76_dbg(DBG_MAC80211, "%s()", __func__);
1903
1904 mutex_lock(&priv->mtx);
1905
1906 switch (conf->type) {
1907 case NL80211_IFTYPE_STATION:
1908 priv->iw_mode = IW_MODE_INFRA;
1909 break;
1910 default:
1911 ret = -EOPNOTSUPP;
1912 goto exit;
1913 }
1914
1915 exit:
1916 mutex_unlock(&priv->mtx);
1917
1918 return ret;
1919 }
1920
1921 static void at76_remove_interface(struct ieee80211_hw *hw,
1922 struct ieee80211_if_init_conf *conf)
1923 {
1924 at76_dbg(DBG_MAC80211, "%s()", __func__);
1925 }
1926
1927 static int at76_join(struct at76_priv *priv)
1928 {
1929 struct at76_req_join join;
1930 int ret;
1931
1932 memset(&join, 0, sizeof(struct at76_req_join));
1933 memcpy(join.essid, priv->essid, priv->essid_size);
1934 join.essid_size = priv->essid_size;
1935 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1936 join.bss_type = INFRASTRUCTURE_MODE;
1937 join.channel = priv->channel;
1938 join.timeout = cpu_to_le16(2000);
1939
1940 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1941 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1942 sizeof(struct at76_req_join));
1943
1944 if (ret < 0) {
1945 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1946 wiphy_name(priv->hw->wiphy), ret);
1947 return 0;
1948 }
1949
1950 ret = at76_wait_completion(priv, CMD_JOIN);
1951 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1952 if (ret != CMD_STATUS_COMPLETE) {
1953 printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
1954 wiphy_name(priv->hw->wiphy), ret);
1955 return 0;
1956 }
1957
1958 at76_set_tkip_bssid(priv, priv->bssid);
1959 at76_set_pm_mode(priv);
1960
1961 return 0;
1962 }
1963
1964 static void at76_dwork_hw_scan(struct work_struct *work)
1965 {
1966 struct at76_priv *priv = container_of(work, struct at76_priv,
1967 dwork_hw_scan.work);
1968 int ret;
1969
1970 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1971 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1972
1973 /* FIXME: add maximum time for scan to complete */
1974
1975 if (ret != CMD_STATUS_COMPLETE) {
1976 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
1977 SCAN_POLL_INTERVAL);
1978 goto exit;
1979 }
1980
1981 ieee80211_scan_completed(priv->hw);
1982
1983 if (is_valid_ether_addr(priv->bssid)) {
1984 ieee80211_wake_queues(priv->hw);
1985 at76_join(priv);
1986 }
1987
1988 ieee80211_wake_queues(priv->hw);
1989
1990 exit:
1991 return;
1992 }
1993
1994 static int at76_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
1995 {
1996 struct at76_priv *priv = hw->priv;
1997 struct at76_req_scan scan;
1998 int ret;
1999
2000 at76_dbg(DBG_MAC80211, "%s():", __func__);
2001 at76_dbg_dump(DBG_MAC80211, ssid, len, "ssid %zd bytes:", len);
2002
2003 mutex_lock(&priv->mtx);
2004
2005 ieee80211_stop_queues(hw);
2006
2007 memset(&scan, 0, sizeof(struct at76_req_scan));
2008 memset(scan.bssid, 0xFF, ETH_ALEN);
2009 scan.scan_type = SCAN_TYPE_ACTIVE;
2010 if (priv->essid_size > 0) {
2011 memcpy(scan.essid, ssid, len);
2012 scan.essid_size = len;
2013 }
2014 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
2015 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
2016 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
2017 scan.international_scan = 0;
2018
2019 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
2020 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
2021
2022 if (ret < 0) {
2023 err("CMD_SCAN failed: %d", ret);
2024 goto exit;
2025 }
2026
2027 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
2028 SCAN_POLL_INTERVAL);
2029
2030 exit:
2031 mutex_unlock(&priv->mtx);
2032
2033 return 0;
2034 }
2035
2036 static int at76_config(struct ieee80211_hw *hw, u32 changed)
2037 {
2038 struct at76_priv *priv = hw->priv;
2039 struct ieee80211_conf *conf = &hw->conf;
2040
2041 at76_dbg(DBG_MAC80211, "%s(): channel %d radio %d",
2042 __func__, conf->channel->hw_value, conf->radio_enabled);
2043 at76_dbg_dump(DBG_MAC80211, priv->essid, priv->essid_size, "ssid:");
2044 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
2045
2046 mutex_lock(&priv->mtx);
2047
2048 priv->channel = conf->channel->hw_value;
2049
2050 if (is_valid_ether_addr(priv->bssid)) {
2051 at76_join(priv);
2052 ieee80211_wake_queues(priv->hw);
2053 } else {
2054 ieee80211_stop_queues(priv->hw);
2055 at76_start_monitor(priv);
2056 };
2057
2058 mutex_unlock(&priv->mtx);
2059
2060 return 0;
2061 }
2062
2063 static int at76_config_interface(struct ieee80211_hw *hw,
2064 struct ieee80211_vif *vif,
2065 struct ieee80211_if_conf *conf)
2066 {
2067 struct at76_priv *priv = hw->priv;
2068
2069 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2070
2071 mutex_lock(&priv->mtx);
2072
2073 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2074 // memcpy(priv->essid, conf->ssid, conf->ssid_len);
2075 // priv->essid_size = conf->ssid_len;
2076
2077 if (is_valid_ether_addr(priv->bssid)) {
2078 /* mac80211 is joining a bss */
2079 ieee80211_wake_queues(priv->hw);
2080 at76_join(priv);
2081 } else
2082 ieee80211_stop_queues(priv->hw);
2083
2084 mutex_unlock(&priv->mtx);
2085
2086 return 0;
2087 }
2088
2089 /* must be atomic */
2090 static void at76_configure_filter(struct ieee80211_hw *hw,
2091 unsigned int changed_flags,
2092 unsigned int *total_flags, int mc_count,
2093 struct dev_addr_list *mc_list)
2094 {
2095 struct at76_priv *priv = hw->priv;
2096 int flags;
2097
2098 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2099 "total_flags=0x%08x mc_count=%d",
2100 __func__, changed_flags, *total_flags, mc_count);
2101
2102 flags = changed_flags & AT76_SUPPORTED_FILTERS;
2103 *total_flags = AT76_SUPPORTED_FILTERS;
2104
2105 /* FIXME: access to priv->promisc should be protected with
2106 * priv->mtx, but it's impossible because this function needs to be
2107 * atomic */
2108
2109 if (flags && !priv->promisc) {
2110 /* mac80211 wants us to enable promiscuous mode */
2111 priv->promisc = 1;
2112 } else if (!flags && priv->promisc) {
2113 /* we need to disable promiscuous mode */
2114 priv->promisc = 0;
2115 } else
2116 return;
2117
2118 queue_work(hw->workqueue, &priv->work_set_promisc);
2119 }
2120
2121 static int at76_set_key_oldfw(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2122 const u8 *local_address, const u8 *address,
2123 struct ieee80211_key_conf *key)
2124 {
2125 struct at76_priv *priv = hw->priv;
2126
2127 int i;
2128
2129 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2130 "key->keylen %d",
2131 __func__, cmd, key->alg, key->keyidx, key->keylen);
2132
2133 if (key->alg != ALG_WEP)
2134 return -EOPNOTSUPP;
2135
2136 key->hw_key_idx = key->keyidx;
2137
2138 mutex_lock(&priv->mtx);
2139
2140 switch (cmd) {
2141 case SET_KEY:
2142 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2143 priv->wep_keys_len[key->keyidx] = key->keylen;
2144
2145 /* FIXME: find out how to do this properly */
2146 priv->wep_key_id = key->keyidx;
2147
2148 break;
2149 case DISABLE_KEY:
2150 default:
2151 priv->wep_keys_len[key->keyidx] = 0;
2152 break;
2153 }
2154
2155 priv->wep_enabled = 0;
2156
2157 for (i = 0; i < WEP_KEYS; i++) {
2158 if (priv->wep_keys_len[i] != 0)
2159 priv->wep_enabled = 1;
2160 }
2161
2162 at76_startup_device(priv);
2163
2164 mutex_unlock(&priv->mtx);
2165
2166 return 0;
2167 }
2168
2169 static int at76_set_key_newfw(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2170 const u8 *local_address, const u8 *address,
2171 struct ieee80211_key_conf *key)
2172 {
2173 struct at76_priv *priv = hw->priv;
2174 int ret = -EOPNOTSUPP;
2175
2176 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2177 "key->keylen %d",
2178 __func__, cmd, key->alg, key->keyidx, key->keylen);
2179
2180 mutex_lock(&priv->mtx);
2181
2182 priv->mib_buf.type = MIB_MAC_ENCRYPTION;
2183
2184 if (cmd == DISABLE_KEY) {
2185 priv->mib_buf.size = CIPHER_KEY_LEN;
2186 priv->mib_buf.index = offsetof(struct mib_mac_encryption,
2187 cipher_default_keyvalue[key->keyidx]);
2188 memset(priv->mib_buf.data.data, 0, CIPHER_KEY_LEN);
2189 if (at76_set_mib(priv, &priv->mib_buf) != CMD_STATUS_COMPLETE)
2190 ret = -EOPNOTSUPP; /* -EIO would be probably better */
2191 else {
2192
2193 priv->keys[key->keyidx].cipher = CIPHER_NONE;
2194 priv->keys[key->keyidx].keylen = 0;
2195 };
2196 if (priv->default_group_key == key->keyidx)
2197 priv->default_group_key = 0xff;
2198
2199 if (priv->default_pairwise_key == key->keyidx)
2200 priv->default_pairwise_key = 0xff;
2201 /* If default pairwise key is removed, fall back to
2202 * group key? */
2203 ret = 0;
2204 goto exit;
2205 };
2206
2207 if (cmd == SET_KEY) {
2208 /* store key into MIB */
2209 priv->mib_buf.size = CIPHER_KEY_LEN;
2210 priv->mib_buf.index = offsetof(struct mib_mac_encryption,
2211 cipher_default_keyvalue[key->keyidx]);
2212 memset(priv->mib_buf.data.data, 0, CIPHER_KEY_LEN);
2213 memcpy(priv->mib_buf.data.data, key->key, key->keylen);
2214
2215 switch (key->alg) {
2216 case ALG_WEP:
2217 if (key->keylen == 5) {
2218 priv->keys[key->keyidx].cipher =
2219 CIPHER_WEP64;
2220 priv->keys[key->keyidx].keylen = 8;
2221 } else if (key->keylen == 13) {
2222 priv->keys[key->keyidx].cipher =
2223 CIPHER_WEP128;
2224 /* Firmware needs this */
2225 priv->keys[key->keyidx].keylen = 8;
2226 } else {
2227 ret = -EOPNOTSUPP;
2228 goto exit;
2229 };
2230 break;
2231 case ALG_TKIP:
2232 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2233 priv->keys[key->keyidx].cipher = CIPHER_TKIP;
2234 priv->keys[key->keyidx].keylen = 12;
2235 break;
2236
2237 case ALG_CCMP:
2238 if (!at76_is_505a(priv->board_type)) {
2239 ret = -EOPNOTSUPP;
2240 goto exit;
2241 };
2242 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2243 priv->keys[key->keyidx].cipher = CIPHER_CCMP;
2244 priv->keys[key->keyidx].keylen = 16;
2245 break;
2246
2247 default:
2248 ret = -EOPNOTSUPP;
2249 goto exit;
2250 };
2251
2252 priv->mib_buf.data.data[38] = priv->keys[key->keyidx].cipher;
2253 priv->mib_buf.data.data[39] = 1; /* Taken from atmelwlandriver,
2254 not documented */
2255
2256 if (is_valid_ether_addr(address))
2257 /* Pairwise key */
2258 priv->mib_buf.data.data[39] |= (KEY_PAIRWISE | KEY_TX);
2259 else if (is_broadcast_ether_addr(address))
2260 /* Group key */
2261 priv->mib_buf.data.data[39] |= (KEY_TX);
2262 else /* Key used only for transmission ??? */
2263 priv->mib_buf.data.data[39] |= (KEY_TX);
2264
2265 if (at76_set_mib(priv, &priv->mib_buf) !=
2266 CMD_STATUS_COMPLETE) {
2267 ret = -EOPNOTSUPP; /* -EIO would be probably better */
2268 goto exit;
2269 };
2270
2271 if ((key->alg == ALG_TKIP) || (key->alg == ALG_CCMP))
2272 at76_reset_rsc(priv);
2273
2274 key->hw_key_idx = key->keyidx;
2275
2276 /* Set up default keys */
2277 if (is_broadcast_ether_addr(address))
2278 priv->default_group_key = key->keyidx;
2279 if (is_valid_ether_addr(address))
2280 priv->default_pairwise_key = key->keyidx;
2281
2282 /* Set up encryption MIBs */
2283
2284 /* first block of settings */
2285 priv->mib_buf.size = 3;
2286 priv->mib_buf.index = offsetof(struct mib_mac_encryption,
2287 privacy_invoked);
2288 priv->mib_buf.data.data[0] = 1; /* privacy_invoked */
2289 priv->mib_buf.data.data[1] = priv->default_pairwise_key;
2290 priv->mib_buf.data.data[2] = priv->default_group_key;
2291
2292 ret = at76_set_mib(priv, &priv->mib_buf);
2293 if (ret != CMD_STATUS_COMPLETE)
2294 goto exit;
2295
2296 /* second block of settings */
2297 priv->mib_buf.size = 3;
2298 priv->mib_buf.index = offsetof(struct mib_mac_encryption,
2299 exclude_unencrypted);
2300 priv->mib_buf.data.data[0] = 1; /* exclude_unencrypted */
2301 priv->mib_buf.data.data[1] = 0; /* wep_encryption_type */
2302 priv->mib_buf.data.data[2] = 0; /* ckip_key_permutation */
2303
2304 ret = at76_set_mib(priv, &priv->mib_buf);
2305 if (ret != CMD_STATUS_COMPLETE)
2306 goto exit;
2307 ret = 0;
2308 };
2309 exit:
2310 at76_dump_mib_mac_encryption(priv);
2311 mutex_unlock(&priv->mtx);
2312 return ret;
2313 }
2314
2315 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2316 const u8 *local_address, const u8 *address,
2317 struct ieee80211_key_conf *key)
2318 {
2319 struct at76_priv *priv = hw->priv;
2320
2321 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2322 "key->keylen %d",
2323 __func__, cmd, key->alg, key->keyidx, key->keylen);
2324
2325 if (FIRMWARE_IS_WPA(priv->fw_version))
2326 return at76_set_key_newfw(hw, cmd, local_address, address, key);
2327 else
2328 return at76_set_key_oldfw(hw, cmd, local_address, address, key);
2329
2330 }
2331
2332 static const struct ieee80211_ops at76_ops = {
2333 .tx = at76_mac80211_tx,
2334 .add_interface = at76_add_interface,
2335 .remove_interface = at76_remove_interface,
2336 .config = at76_config,
2337 .config_interface = at76_config_interface,
2338 .configure_filter = at76_configure_filter,
2339 .start = at76_mac80211_start,
2340 .stop = at76_mac80211_stop,
2341 .hw_scan = at76_hw_scan,
2342 .set_key = at76_set_key,
2343 };
2344
2345 /* Allocate network device and initialize private data */
2346 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2347 {
2348 struct ieee80211_hw *hw;
2349 struct at76_priv *priv;
2350
2351 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2352 if (!hw) {
2353 printk(KERN_ERR DRIVER_NAME ": could not register"
2354 " ieee80211_hw\n");
2355 return NULL;
2356 }
2357
2358 priv = hw->priv;
2359 priv->hw = hw;
2360
2361 priv->udev = udev;
2362
2363 mutex_init(&priv->mtx);
2364 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2365 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2366 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2367
2368 priv->rx_tasklet.func = at76_rx_tasklet;
2369 priv->rx_tasklet.data = 0;
2370
2371 priv->pm_mode = AT76_PM_OFF;
2372 priv->pm_period = 0;
2373
2374 /* unit us */
2375 priv->hw->channel_change_time = 100000;
2376
2377 return priv;
2378 }
2379
2380 static int at76_alloc_urbs(struct at76_priv *priv,
2381 struct usb_interface *interface)
2382 {
2383 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2384 int i;
2385 int buffer_size;
2386 struct usb_host_interface *iface_desc;
2387
2388 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2389
2390 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2391 interface->altsetting[0].desc.bNumEndpoints);
2392
2393 ep_in = NULL;
2394 ep_out = NULL;
2395 iface_desc = interface->cur_altsetting;
2396 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2397 endpoint = &iface_desc->endpoint[i].desc;
2398
2399 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2400 __func__, i, endpoint->bEndpointAddress,
2401 endpoint->bmAttributes);
2402
2403 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2404 ep_in = endpoint;
2405
2406 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2407 ep_out = endpoint;
2408 }
2409
2410 if (!ep_in || !ep_out) {
2411 dev_printk(KERN_ERR, &interface->dev,
2412 "bulk endpoints missing\n");
2413 return -ENXIO;
2414 }
2415
2416 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2417 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2418
2419 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2420 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2421 if (!priv->rx_urb || !priv->tx_urb) {
2422 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2423 return -ENOMEM;
2424 }
2425
2426 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2427 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2428 if (!priv->bulk_out_buffer) {
2429 dev_printk(KERN_ERR, &interface->dev,
2430 "cannot allocate output buffer\n");
2431 return -ENOMEM;
2432 }
2433
2434 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2435
2436 return 0;
2437 }
2438
2439 static struct ieee80211_rate at76_rates[] = {
2440 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2441 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2442 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2443 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2444 };
2445
2446 static struct ieee80211_channel at76_channels[] = {
2447 { .center_freq = 2412, .hw_value = 1 },
2448 { .center_freq = 2417, .hw_value = 2 },
2449 { .center_freq = 2422, .hw_value = 3 },
2450 { .center_freq = 2427, .hw_value = 4 },
2451 { .center_freq = 2432, .hw_value = 5 },
2452 { .center_freq = 2437, .hw_value = 6 },
2453 { .center_freq = 2442, .hw_value = 7 },
2454 { .center_freq = 2447, .hw_value = 8 },
2455 { .center_freq = 2452, .hw_value = 9 },
2456 { .center_freq = 2457, .hw_value = 10 },
2457 { .center_freq = 2462, .hw_value = 11 },
2458 { .center_freq = 2467, .hw_value = 12 },
2459 { .center_freq = 2472, .hw_value = 13 },
2460 { .center_freq = 2484, .hw_value = 14 }
2461 };
2462
2463 static struct ieee80211_supported_band at76_supported_band = {
2464 .channels = at76_channels,
2465 .n_channels = ARRAY_SIZE(at76_channels),
2466 .bitrates = at76_rates,
2467 .n_bitrates = ARRAY_SIZE(at76_rates),
2468 };
2469
2470 /* Register network device and initialize the hardware */
2471 static int at76_init_new_device(struct at76_priv *priv,
2472 struct usb_interface *interface)
2473 {
2474 struct device *dev = &interface->dev;
2475 int ret;
2476
2477 /* set up the endpoint information */
2478 /* check out the endpoints */
2479
2480 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2481 interface->cur_altsetting->desc.bNumEndpoints);
2482
2483 ret = at76_alloc_urbs(priv, interface);
2484 if (ret < 0)
2485 goto exit;
2486
2487 /* MAC address */
2488 ret = at76_get_hw_config(priv);
2489 if (ret < 0) {
2490 dev_err(dev, "cannot get MAC address\n");
2491 goto exit;
2492 }
2493
2494 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2495
2496 priv->channel = DEF_CHANNEL;
2497 priv->iw_mode = IW_MODE_INFRA;
2498 priv->rts_threshold = DEF_RTS_THRESHOLD;
2499 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2500 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2501 priv->txrate = TX_RATE_AUTO;
2502 priv->preamble_type = PREAMBLE_TYPE_LONG;
2503 priv->beacon_period = 100;
2504 priv->auth_mode = WLAN_AUTH_OPEN;
2505 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2506 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2507 priv->scan_mode = SCAN_TYPE_ACTIVE;
2508 priv->default_pairwise_key = 0xff;
2509 priv->default_group_key = 0xff;
2510
2511 /* mac80211 initialisation */
2512 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2513
2514 if (FIRMWARE_IS_WPA(priv->fw_version) &&
2515 (at76_is_503rfmd(priv->board_type) ||
2516 at76_is_505(priv->board_type)))
2517 priv->hw->flags = IEEE80211_HW_SIGNAL_UNSPEC;
2518 else
2519 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2520 IEEE80211_HW_SIGNAL_UNSPEC;
2521
2522 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2523
2524 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2525 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2526
2527 ret = ieee80211_register_hw(priv->hw);
2528 if (ret) {
2529 dev_err(dev, "cannot register mac80211 hw (status %d)!\n", ret);
2530 goto exit;
2531 }
2532
2533 priv->mac80211_registered = 1;
2534
2535 dev_info(dev, "%s: USB %s, MAC %s, firmware %d.%d.%d-%d\n",
2536 wiphy_name(priv->hw->wiphy),
2537 interface->dev.bus_id, mac2str(priv->mac_addr),
2538 priv->fw_version.major, priv->fw_version.minor,
2539 priv->fw_version.patch, priv->fw_version.build);
2540 dev_info(dev, "%s: regulatory domain 0x%02x: %s\n",
2541 wiphy_name(priv->hw->wiphy),
2542 priv->regulatory_domain, priv->domain->name);
2543 dev_info(dev, "%s: WPA support: ", wiphy_name(priv->hw->wiphy));
2544 if (!FIRMWARE_IS_WPA(priv->fw_version))
2545 printk("none\n");
2546 else {
2547 if (!at76_is_505a(priv->board_type))
2548 printk("TKIP\n");
2549 else
2550 printk("TKIP, AES/CCMP\n");
2551 };
2552
2553 exit:
2554 return ret;
2555 }
2556
2557 static void at76_delete_device(struct at76_priv *priv)
2558 {
2559 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2560
2561 /* The device is gone, don't bother turning it off */
2562 priv->device_unplugged = 1;
2563
2564 if (priv->mac80211_registered)
2565 ieee80211_unregister_hw(priv->hw);
2566
2567 /* assuming we used keventd, it must quiesce too */
2568 flush_scheduled_work();
2569
2570 kfree(priv->bulk_out_buffer);
2571
2572 if (priv->tx_urb) {
2573 usb_kill_urb(priv->tx_urb);
2574 usb_free_urb(priv->tx_urb);
2575 }
2576 if (priv->rx_urb) {
2577 usb_kill_urb(priv->rx_urb);
2578 usb_free_urb(priv->rx_urb);
2579 }
2580
2581 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2582
2583 if (priv->rx_skb)
2584 kfree_skb(priv->rx_skb);
2585
2586 usb_put_dev(priv->udev);
2587
2588 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2589 __func__);
2590 ieee80211_free_hw(priv->hw);
2591
2592 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2593 }
2594
2595 static int at76_probe(struct usb_interface *interface,
2596 const struct usb_device_id *id)
2597 {
2598 int ret;
2599 struct at76_priv *priv;
2600 struct fwentry *fwe;
2601 struct usb_device *udev;
2602 int op_mode;
2603 int need_ext_fw = 0;
2604 struct mib_fw_version fwv;
2605 int board_type = (int)id->driver_info;
2606
2607 udev = usb_get_dev(interface_to_usbdev(interface));
2608
2609 /* Load firmware into kernel memory */
2610 fwe = at76_load_firmware(udev, board_type);
2611 if (!fwe) {
2612 ret = -ENOENT;
2613 goto error;
2614 }
2615
2616 op_mode = at76_get_op_mode(udev);
2617
2618 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2619
2620 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2621 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2622
2623 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2624 dev_err(&interface->dev,
2625 "cannot handle a device in HW_CONFIG_MODE\n");
2626 ret = -EBUSY;
2627 goto error;
2628 }
2629
2630 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2631 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2632 /* download internal firmware part */
2633 dev_dbg(&interface->dev, "downloading internal firmware\n");
2634 ret = at76_load_internal_fw(udev, fwe);
2635 if (ret < 0) {
2636 dev_err(&interface->dev,
2637 "error %d downloading internal firmware\n",
2638 ret);
2639 goto error;
2640 }
2641 usb_put_dev(udev);
2642 return ret;
2643 }
2644
2645 /* Internal firmware already inside the device. Get firmware
2646 * version to test if external firmware is loaded.
2647 * This works only for newer firmware, e.g. the Intersil 0.90.x
2648 * says "control timeout on ep0in" and subsequent
2649 * at76_get_op_mode() fail too :-( */
2650
2651 /* if version >= 0.100.x.y or device with built-in flash we can
2652 * query the device for the fw version */
2653 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2654 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2655 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2656 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2657 need_ext_fw = 1;
2658 } else
2659 /* No way to check firmware version, reload to be sure */
2660 need_ext_fw = 1;
2661
2662 if (need_ext_fw) {
2663 dev_dbg(&interface->dev, "downloading external firmware\n");
2664
2665 ret = at76_load_external_fw(udev, fwe);
2666 if (ret)
2667 goto error;
2668
2669 /* Re-check firmware version */
2670 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2671 if (ret < 0) {
2672 dev_err(&interface->dev,
2673 "error %d getting firmware version\n", ret);
2674 goto error;
2675 }
2676 }
2677
2678 priv = at76_alloc_new_device(udev);
2679 if (!priv) {
2680 ret = -ENOMEM;
2681 goto error;
2682 }
2683
2684 usb_set_intfdata(interface, priv);
2685
2686 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2687 priv->board_type = board_type;
2688
2689 ret = at76_init_new_device(priv, interface);
2690 if (ret < 0)
2691 at76_delete_device(priv);
2692
2693 return ret;
2694
2695 error:
2696 usb_put_dev(udev);
2697 return ret;
2698 }
2699
2700 static void at76_disconnect(struct usb_interface *interface)
2701 {
2702 struct at76_priv *priv;
2703
2704 priv = usb_get_intfdata(interface);
2705 usb_set_intfdata(interface, NULL);
2706
2707 /* Disconnect after loading internal firmware */
2708 if (!priv)
2709 return;
2710
2711 printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
2712 at76_delete_device(priv);
2713 dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2714 }
2715
2716 /* Structure for registering this driver with the USB subsystem */
2717 static struct usb_driver at76_driver = {
2718 .name = DRIVER_NAME,
2719 .probe = at76_probe,
2720 .disconnect = at76_disconnect,
2721 .id_table = dev_table,
2722 };
2723
2724 static int __init at76_mod_init(void)
2725 {
2726 int result;
2727
2728 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2729
2730 mutex_init(&fw_mutex);
2731
2732 /* register this driver with the USB subsystem */
2733 result = usb_register(&at76_driver);
2734 if (result < 0)
2735 printk(KERN_ERR DRIVER_NAME
2736 ": usb_register failed (status %d)\n", result);
2737
2738 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2739 return result;
2740 }
2741
2742 static void __exit at76_mod_exit(void)
2743 {
2744 int i;
2745
2746 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2747 usb_deregister(&at76_driver);
2748 for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2749 if (firmwares[i].fw)
2750 release_firmware(firmwares[i].fw);
2751 }
2752 led_trigger_unregister_simple(ledtrig_tx);
2753 }
2754
2755 module_param_named(debug, at76_debug, int, 0600);
2756 MODULE_PARM_DESC(debug, "Debugging level");
2757
2758 module_init(at76_mod_init);
2759 module_exit(at76_mod_exit);
2760
2761 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2762 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2763 MODULE_AUTHOR("Alex <alex@foogod.com>");
2764 MODULE_AUTHOR("Nick Jones");
2765 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2766 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2767 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2768 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2769 MODULE_AUTHOR("Milan Plzik <milan.plzik@gmail.com>");
2770 MODULE_DESCRIPTION(DRIVER_DESC);
2771 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree