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27#include <linux/init.h>
28#include <linux/kernel.h>
29#include <linux/sched.h>
30#include <linux/errno.h>
31#include <linux/slab.h>
32#include <linux/module.h>
33#include <linux/spinlock.h>
34#include <linux/list.h>
35#include <linux/usb.h>
36#include <linux/netdevice.h>
37#include <linux/if_arp.h>
38#include <linux/etherdevice.h>
39#include <linux/ethtool.h>
40#include <linux/wireless.h>
41#include <net/iw_handler.h>
42#include <net/ieee80211_radiotap.h>
43#include <linux/firmware.h>
44#include <linux/leds.h>
45#include <net/mac80211.h>
46
47#include "at76c50x-usb.h"
48
49
50#define DRIVER_NAME "at76c50x-usb"
51#define DRIVER_VERSION "0.17"
52#define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
53
54
55#define DBG_PROGRESS 0x00000001
56#define DBG_BSS_TABLE 0x00000002
57#define DBG_IOCTL 0x00000004
58#define DBG_MAC_STATE 0x00000008
59#define DBG_TX_DATA 0x00000010
60#define DBG_TX_DATA_CONTENT 0x00000020
61#define DBG_TX_MGMT 0x00000040
62#define DBG_RX_DATA 0x00000080
63#define DBG_RX_DATA_CONTENT 0x00000100
64#define DBG_RX_MGMT 0x00000200
65#define DBG_RX_BEACON 0x00000400
66#define DBG_RX_CTRL 0x00000800
67#define DBG_RX_MGMT_CONTENT 0x00001000
68#define DBG_RX_FRAGS 0x00002000
69#define DBG_DEVSTART 0x00004000
70#define DBG_URB 0x00008000
71#define DBG_RX_ATMEL_HDR 0x00010000
72#define DBG_PROC_ENTRY 0x00020000
73#define DBG_PM 0x00040000
74#define DBG_BSS_MATCH 0x00080000
75#define DBG_PARAMS 0x00100000
76#define DBG_WAIT_COMPLETE 0x00200000
77#define DBG_RX_FRAGS_SKB 0x00400000
78#define DBG_BSS_TABLE_RM 0x00800000
79#define DBG_MONITOR_MODE 0x01000000
80#define DBG_MIB 0x02000000
81#define DBG_MGMT_TIMER 0x04000000
82#define DBG_WE_EVENTS 0x08000000
83#define DBG_FW 0x10000000
84#define DBG_DFU 0x20000000
85#define DBG_CMD 0x40000000
86#define DBG_MAC80211 0x80000000
87
88#define DBG_DEFAULTS 0
89
90
91#define at76_dbg(bits, format, arg...) \
92 do { \
93 if (at76_debug & (bits)) \
94 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
95 ## arg); \
96 } while (0)
97
98#define at76_dbg_dump(bits, buf, len, format, arg...) \
99 do { \
100 if (at76_debug & (bits)) { \
101 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
102 ## arg); \
103 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, \
104 buf, len); \
105 } \
106 } while (0)
107
108static uint at76_debug = DBG_DEFAULTS;
109
110
111static struct mutex fw_mutex;
112
113static struct fwentry firmwares[] = {
114 [0] = { "" },
115 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
116 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
117 [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
118 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
119 [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
120 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
121 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
122 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
123};
124
125#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
126
127static struct usb_device_id dev_table[] = {
128
129
130
131
132 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
133
134 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
135
136 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
137
138 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
139
140 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
141
142 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
143
144 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
145
146 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
147
148 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
149
150 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
151
152 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
153
154 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
155
156 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
157
158 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
159
160 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
161
162
163
164
165 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
166
167 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
168
169
170
171
172 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
173
174 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
175
176 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
177
178 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
179
180 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
181
182 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
183
184 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
185
186 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
187
188 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
189
190 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
191
192 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
193
194 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
195
196 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
197
198 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
199
200 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
201
202 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
203
204 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
205
206 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
207
208 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
209
210 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
211
212 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
213
214 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
215
216
217
218
219 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
220
221 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
222
223
224
225
226 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
227
228
229
230
231 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
232
233 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
234
235 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
236
237 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
238
239 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
240
241 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
242
243 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
244
245
246
247
248 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
249
250 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
251
252 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
253
254 { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
255
256
257
258
259 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
260 { }
261};
262
263MODULE_DEVICE_TABLE(usb, dev_table);
264
265
266static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
267
268static const char *const preambles[] = { "long", "short", "auto" };
269
270
271
272#define STATE_IDLE 0x00
273#define STATE_DETACH 0x01
274#define STATE_DFU_IDLE 0x02
275#define STATE_DFU_DOWNLOAD_SYNC 0x03
276#define STATE_DFU_DOWNLOAD_BUSY 0x04
277#define STATE_DFU_DOWNLOAD_IDLE 0x05
278#define STATE_DFU_MANIFEST_SYNC 0x06
279#define STATE_DFU_MANIFEST 0x07
280#define STATE_DFU_MANIFEST_WAIT_RESET 0x08
281#define STATE_DFU_UPLOAD_IDLE 0x09
282#define STATE_DFU_ERROR 0x0a
283
284
285#define DFU_DETACH 0
286#define DFU_DNLOAD 1
287#define DFU_UPLOAD 2
288#define DFU_GETSTATUS 3
289#define DFU_CLRSTATUS 4
290#define DFU_GETSTATE 5
291#define DFU_ABORT 6
292
293#define FW_BLOCK_SIZE 1024
294
295struct dfu_status {
296 unsigned char status;
297 unsigned char poll_timeout[3];
298 unsigned char state;
299 unsigned char string;
300} __attribute__((packed));
301
302static inline int at76_is_intersil(enum board_type board)
303{
304 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
305}
306
307static inline int at76_is_503rfmd(enum board_type board)
308{
309 return (board == BOARD_503 || board == BOARD_503_ACC);
310}
311
312static inline int at76_is_505a(enum board_type board)
313{
314 return (board == BOARD_505A || board == BOARD_505AMX);
315}
316
317
318static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
319 void *block, int size)
320{
321 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
322 USB_TYPE_CLASS | USB_DIR_OUT |
323 USB_RECIP_INTERFACE, blockno, 0, block, size,
324 USB_CTRL_GET_TIMEOUT);
325}
326
327static int at76_dfu_get_status(struct usb_device *udev,
328 struct dfu_status *status)
329{
330 int ret;
331
332 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
333 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
334 0, 0, status, sizeof(struct dfu_status),
335 USB_CTRL_GET_TIMEOUT);
336 return ret;
337}
338
339static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
340{
341 int ret;
342
343 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
344 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
345 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
346 return ret;
347}
348
349
350static inline unsigned long at76_get_timeout(struct dfu_status *s)
351{
352 return msecs_to_jiffies((s->poll_timeout[2] << 16)
353 | (s->poll_timeout[1] << 8)
354 | (s->poll_timeout[0]));
355}
356
357
358
359static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
360 int manifest_sync_timeout)
361{
362 u8 *block;
363 struct dfu_status dfu_stat_buf;
364 int ret = 0;
365 int need_dfu_state = 1;
366 int is_done = 0;
367 u8 dfu_state = 0;
368 u32 dfu_timeout = 0;
369 int bsize = 0;
370 int blockno = 0;
371
372 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
373 manifest_sync_timeout);
374
375 if (!size) {
376 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
377 return -EINVAL;
378 }
379
380 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
381 if (!block)
382 return -ENOMEM;
383
384 do {
385 if (need_dfu_state) {
386 ret = at76_dfu_get_state(udev, &dfu_state);
387 if (ret < 0) {
388 dev_printk(KERN_ERR, &udev->dev,
389 "cannot get DFU state: %d\n", ret);
390 goto exit;
391 }
392 need_dfu_state = 0;
393 }
394
395 switch (dfu_state) {
396 case STATE_DFU_DOWNLOAD_SYNC:
397 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
398 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
399 if (ret >= 0) {
400 dfu_state = dfu_stat_buf.state;
401 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
402 need_dfu_state = 0;
403 } else
404 dev_printk(KERN_ERR, &udev->dev,
405 "at76_dfu_get_status returned %d\n",
406 ret);
407 break;
408
409 case STATE_DFU_DOWNLOAD_BUSY:
410 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
411 need_dfu_state = 1;
412
413 at76_dbg(DBG_DFU, "DFU: Resetting device");
414 schedule_timeout_interruptible(dfu_timeout);
415 break;
416
417 case STATE_DFU_DOWNLOAD_IDLE:
418 at76_dbg(DBG_DFU, "DOWNLOAD...");
419
420 case STATE_DFU_IDLE:
421 at76_dbg(DBG_DFU, "DFU IDLE");
422
423 bsize = min_t(int, size, FW_BLOCK_SIZE);
424 memcpy(block, buf, bsize);
425 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
426 "bsize = %4d, blockno = %2d", size, bsize,
427 blockno);
428 ret =
429 at76_load_int_fw_block(udev, blockno, block, bsize);
430 buf += bsize;
431 size -= bsize;
432 blockno++;
433
434 if (ret != bsize)
435 dev_printk(KERN_ERR, &udev->dev,
436 "at76_load_int_fw_block "
437 "returned %d\n", ret);
438 need_dfu_state = 1;
439 break;
440
441 case STATE_DFU_MANIFEST_SYNC:
442 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
443
444 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
445 if (ret < 0)
446 break;
447
448 dfu_state = dfu_stat_buf.state;
449 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
450 need_dfu_state = 0;
451
452
453
454 if (manifest_sync_timeout > 0)
455 dfu_timeout = manifest_sync_timeout;
456
457 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
458 schedule_timeout_interruptible(dfu_timeout);
459 break;
460
461 case STATE_DFU_MANIFEST:
462 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
463 is_done = 1;
464 break;
465
466 case STATE_DFU_MANIFEST_WAIT_RESET:
467 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
468 is_done = 1;
469 break;
470
471 case STATE_DFU_UPLOAD_IDLE:
472 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
473 break;
474
475 case STATE_DFU_ERROR:
476 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
477 ret = -EPIPE;
478 break;
479
480 default:
481 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
482 ret = -EINVAL;
483 break;
484 }
485 } while (!is_done && (ret >= 0));
486
487exit:
488 kfree(block);
489 if (ret >= 0)
490 ret = 0;
491
492 return ret;
493}
494
495#define HEX2STR_BUFFERS 4
496#define HEX2STR_MAX_LEN 64
497#define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
498
499
500static char *hex2str(void *buf, int len)
501{
502 static atomic_t a = ATOMIC_INIT(0);
503 static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
504 char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
505 char *obuf = ret;
506 u8 *ibuf = buf;
507
508 if (len > HEX2STR_MAX_LEN)
509 len = HEX2STR_MAX_LEN;
510
511 if (len <= 0) {
512 ret[0] = '\0';
513 return ret;
514 }
515
516 while (len--) {
517 *obuf++ = BIN2HEX(*ibuf >> 4);
518 *obuf++ = BIN2HEX(*ibuf & 0xf);
519 *obuf++ = '-';
520 ibuf++;
521 }
522 *(--obuf) = '\0';
523
524 return ret;
525}
526
527#define MAC2STR_BUFFERS 4
528
529static inline char *mac2str(u8 *mac)
530{
531 static atomic_t a = ATOMIC_INIT(0);
532 static char bufs[MAC2STR_BUFFERS][6 * 3];
533 char *str;
534
535 str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)];
536 sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
537 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
538 return str;
539}
540
541
542static int tx_activity;
543static void at76_ledtrig_tx_timerfunc(unsigned long data);
544static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
545DEFINE_LED_TRIGGER(ledtrig_tx);
546
547static void at76_ledtrig_tx_timerfunc(unsigned long data)
548{
549 static int tx_lastactivity;
550
551 if (tx_lastactivity != tx_activity) {
552 tx_lastactivity = tx_activity;
553 led_trigger_event(ledtrig_tx, LED_FULL);
554 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
555 } else
556 led_trigger_event(ledtrig_tx, LED_OFF);
557}
558
559static void at76_ledtrig_tx_activity(void)
560{
561 tx_activity++;
562 if (!timer_pending(&ledtrig_tx_timer))
563 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
564}
565
566static int at76_remap(struct usb_device *udev)
567{
568 int ret;
569 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
570 USB_TYPE_VENDOR | USB_DIR_OUT |
571 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
572 USB_CTRL_GET_TIMEOUT);
573 if (ret < 0)
574 return ret;
575 return 0;
576}
577
578static int at76_get_op_mode(struct usb_device *udev)
579{
580 int ret;
581 u8 saved;
582 u8 *op_mode;
583
584 op_mode = kmalloc(1, GFP_NOIO);
585 if (!op_mode)
586 return -ENOMEM;
587 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
588 USB_TYPE_VENDOR | USB_DIR_IN |
589 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
590 USB_CTRL_GET_TIMEOUT);
591 saved = *op_mode;
592 kfree(op_mode);
593
594 if (ret < 0)
595 return ret;
596 else if (ret < 1)
597 return -EIO;
598 else
599 return saved;
600}
601
602
603static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
604 void *block, int size)
605{
606 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
607 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
608 0x0802, blockno, block, size,
609 USB_CTRL_GET_TIMEOUT);
610}
611
612static inline int at76_get_hw_cfg(struct usb_device *udev,
613 union at76_hwcfg *buf, int buf_size)
614{
615 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
616 USB_TYPE_VENDOR | USB_DIR_IN |
617 USB_RECIP_INTERFACE, 0x0a02, 0,
618 buf, buf_size, USB_CTRL_GET_TIMEOUT);
619}
620
621
622static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
623 union at76_hwcfg *buf, int buf_size)
624{
625 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
626 USB_TYPE_VENDOR | USB_DIR_IN |
627 USB_RECIP_INTERFACE, 0x0902, 0,
628 buf, buf_size, USB_CTRL_GET_TIMEOUT);
629}
630
631
632
633
634static int at76_get_hw_config(struct at76_priv *priv)
635{
636 int ret;
637 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
638
639 if (!hwcfg)
640 return -ENOMEM;
641
642 if (at76_is_intersil(priv->board_type)) {
643 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
644 sizeof(hwcfg->i));
645 if (ret < 0)
646 goto exit;
647 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
648 priv->regulatory_domain = hwcfg->i.regulatory_domain;
649 } else if (at76_is_503rfmd(priv->board_type)) {
650 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
651 if (ret < 0)
652 goto exit;
653 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
654 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
655 } else {
656 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
657 if (ret < 0)
658 goto exit;
659 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
660 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
661 }
662
663exit:
664 kfree(hwcfg);
665 if (ret < 0)
666 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
667 wiphy_name(priv->hw->wiphy), ret);
668
669 return ret;
670}
671
672static struct reg_domain const *at76_get_reg_domain(u16 code)
673{
674 int i;
675 static struct reg_domain const fd_tab[] = {
676 { 0x10, "FCC (USA)", 0x7ff },
677 { 0x20, "IC (Canada)", 0x7ff },
678 { 0x30, "ETSI (most of Europe)", 0x1fff },
679 { 0x31, "Spain", 0x600 },
680 { 0x32, "France", 0x1e00 },
681 { 0x40, "MKK (Japan)", 0x2000 },
682 { 0x41, "MKK1 (Japan)", 0x3fff },
683 { 0x50, "Israel", 0x3fc },
684 { 0x00, "<unknown>", 0xffffffff }
685 };
686
687
688 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
689 if (code == fd_tab[i].code)
690 break;
691
692 return &fd_tab[i];
693}
694
695static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
696 int buf_size)
697{
698 int ret;
699
700 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
701 USB_TYPE_VENDOR | USB_DIR_IN |
702 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
703 USB_CTRL_GET_TIMEOUT);
704 if (ret >= 0 && ret != buf_size)
705 return -EIO;
706 return ret;
707}
708
709
710static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
711{
712 u8 *stat_buf;
713 int ret;
714
715 stat_buf = kmalloc(40, GFP_NOIO);
716 if (!stat_buf)
717 return -ENOMEM;
718
719 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
720 USB_TYPE_VENDOR | USB_DIR_IN |
721 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
722 40, USB_CTRL_GET_TIMEOUT);
723 if (ret >= 0)
724 ret = stat_buf[5];
725 kfree(stat_buf);
726
727 return ret;
728}
729
730#define MAKE_CMD_CASE(c) case (c): return #c
731static const char *at76_get_cmd_string(u8 cmd_status)
732{
733 switch (cmd_status) {
734 MAKE_CMD_CASE(CMD_SET_MIB);
735 MAKE_CMD_CASE(CMD_GET_MIB);
736 MAKE_CMD_CASE(CMD_SCAN);
737 MAKE_CMD_CASE(CMD_JOIN);
738 MAKE_CMD_CASE(CMD_START_IBSS);
739 MAKE_CMD_CASE(CMD_RADIO_ON);
740 MAKE_CMD_CASE(CMD_RADIO_OFF);
741 MAKE_CMD_CASE(CMD_STARTUP);
742 }
743
744 return "UNKNOWN";
745}
746
747static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
748 int buf_size)
749{
750 int ret;
751 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
752 buf_size, GFP_KERNEL);
753
754 if (!cmd_buf)
755 return -ENOMEM;
756
757 cmd_buf->cmd = cmd;
758 cmd_buf->reserved = 0;
759 cmd_buf->size = cpu_to_le16(buf_size);
760 memcpy(cmd_buf->data, buf, buf_size);
761
762 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
763 "issuing command %s (0x%02x)",
764 at76_get_cmd_string(cmd), cmd);
765
766 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
767 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
768 0, 0, cmd_buf,
769 sizeof(struct at76_command) + buf_size,
770 USB_CTRL_GET_TIMEOUT);
771 kfree(cmd_buf);
772 return ret;
773}
774
775#define MAKE_CMD_STATUS_CASE(c) case (c): return #c
776static const char *at76_get_cmd_status_string(u8 cmd_status)
777{
778 switch (cmd_status) {
779 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
780 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
781 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
782 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
783 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
784 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
785 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
786 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
787 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
788 }
789
790 return "UNKNOWN";
791}
792
793
794static int at76_wait_completion(struct at76_priv *priv, int cmd)
795{
796 int status = 0;
797 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
798
799 do {
800 status = at76_get_cmd_status(priv->udev, cmd);
801 if (status < 0) {
802 printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
803 wiphy_name(priv->hw->wiphy), status);
804 break;
805 }
806
807 at76_dbg(DBG_WAIT_COMPLETE,
808 "%s: Waiting on cmd %d, status = %d (%s)",
809 wiphy_name(priv->hw->wiphy), cmd, status,
810 at76_get_cmd_status_string(status));
811
812 if (status != CMD_STATUS_IN_PROGRESS
813 && status != CMD_STATUS_IDLE)
814 break;
815
816 schedule_timeout_interruptible(HZ / 10);
817 if (time_after(jiffies, timeout)) {
818 printk(KERN_ERR
819 "%s: completion timeout for command %d\n",
820 wiphy_name(priv->hw->wiphy), cmd);
821 status = -ETIMEDOUT;
822 break;
823 }
824 } while (1);
825
826 return status;
827}
828
829static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
830{
831 int ret;
832
833 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
834 offsetof(struct set_mib_buffer,
835 data) + buf->size);
836 if (ret < 0)
837 return ret;
838
839 ret = at76_wait_completion(priv, CMD_SET_MIB);
840 if (ret != CMD_STATUS_COMPLETE) {
841 printk(KERN_INFO
842 "%s: set_mib: at76_wait_completion failed "
843 "with %d\n", wiphy_name(priv->hw->wiphy), ret);
844 ret = -EIO;
845 }
846
847 return ret;
848}
849
850
851static int at76_set_radio(struct at76_priv *priv, int enable)
852{
853 int ret;
854 int cmd;
855
856 if (priv->radio_on == enable)
857 return 0;
858
859 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
860
861 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
862 if (ret < 0)
863 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
864 wiphy_name(priv->hw->wiphy), cmd, ret);
865 else
866 ret = 1;
867
868 priv->radio_on = enable;
869 return ret;
870}
871
872
873static int at76_set_pm_mode(struct at76_priv *priv)
874{
875 int ret = 0;
876
877 priv->mib_buf.type = MIB_MAC_MGMT;
878 priv->mib_buf.size = 1;
879 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
880 priv->mib_buf.data.byte = priv->pm_mode;
881
882 ret = at76_set_mib(priv, &priv->mib_buf);
883 if (ret < 0)
884 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
885 wiphy_name(priv->hw->wiphy), ret);
886
887 return ret;
888}
889
890static int at76_set_preamble(struct at76_priv *priv, u8 type)
891{
892 int ret = 0;
893
894 priv->mib_buf.type = MIB_LOCAL;
895 priv->mib_buf.size = 1;
896 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
897 priv->mib_buf.data.byte = type;
898
899 ret = at76_set_mib(priv, &priv->mib_buf);
900 if (ret < 0)
901 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
902 wiphy_name(priv->hw->wiphy), ret);
903
904 return ret;
905}
906
907static int at76_set_frag(struct at76_priv *priv, u16 size)
908{
909 int ret = 0;
910
911 priv->mib_buf.type = MIB_MAC;
912 priv->mib_buf.size = 2;
913 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
914 priv->mib_buf.data.word = cpu_to_le16(size);
915
916 ret = at76_set_mib(priv, &priv->mib_buf);
917 if (ret < 0)
918 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
919 wiphy_name(priv->hw->wiphy), ret);
920
921 return ret;
922}
923
924static int at76_set_rts(struct at76_priv *priv, u16 size)
925{
926 int ret = 0;
927
928 priv->mib_buf.type = MIB_MAC;
929 priv->mib_buf.size = 2;
930 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
931 priv->mib_buf.data.word = cpu_to_le16(size);
932
933 ret = at76_set_mib(priv, &priv->mib_buf);
934 if (ret < 0)
935 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
936 wiphy_name(priv->hw->wiphy), ret);
937
938 return ret;
939}
940
941static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
942{
943 int ret = 0;
944
945 priv->mib_buf.type = MIB_LOCAL;
946 priv->mib_buf.size = 1;
947 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
948 priv->mib_buf.data.byte = onoff;
949
950 ret = at76_set_mib(priv, &priv->mib_buf);
951 if (ret < 0)
952 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
953 wiphy_name(priv->hw->wiphy), ret);
954
955 return ret;
956}
957
958static void at76_dump_mib_mac_addr(struct at76_priv *priv)
959{
960 int i;
961 int ret;
962 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
963 GFP_KERNEL);
964
965 if (!m)
966 return;
967
968 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
969 sizeof(struct mib_mac_addr));
970 if (ret < 0) {
971 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
972 wiphy_name(priv->hw->wiphy), ret);
973 goto exit;
974 }
975
976 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %s res 0x%x 0x%x",
977 wiphy_name(priv->hw->wiphy),
978 mac2str(m->mac_addr), m->res[0], m->res[1]);
979 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
980 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %s, "
981 "status %d", wiphy_name(priv->hw->wiphy), i,
982 mac2str(m->group_addr[i]), m->group_addr_status[i]);
983exit:
984 kfree(m);
985}
986
987static void at76_dump_mib_mac_wep(struct at76_priv *priv)
988{
989 int i;
990 int ret;
991 int key_len;
992 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
993
994 if (!m)
995 return;
996
997 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
998 sizeof(struct mib_mac_wep));
999 if (ret < 0) {
1000 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
1001 wiphy_name(priv->hw->wiphy), ret);
1002 goto exit;
1003 }
1004
1005 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1006 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1007 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
1008 m->privacy_invoked, m->wep_default_key_id,
1009 m->wep_key_mapping_len, m->exclude_unencrypted,
1010 le32_to_cpu(m->wep_icv_error_count),
1011 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1012 m->wep_default_key_id);
1013
1014 key_len = (m->encryption_level == 1) ?
1015 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1016
1017 for (i = 0; i < WEP_KEYS; i++)
1018 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1019 wiphy_name(priv->hw->wiphy), i,
1020 hex2str(m->wep_default_keyvalue[i], key_len));
1021exit:
1022 kfree(m);
1023}
1024
1025static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1026{
1027 int ret;
1028 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1029 GFP_KERNEL);
1030
1031 if (!m)
1032 return;
1033
1034 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1035 sizeof(struct mib_mac_mgmt));
1036 if (ret < 0) {
1037 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1038 wiphy_name(priv->hw->wiphy), ret);
1039 goto exit;
1040 }
1041
1042 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1043 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1044 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1045 "current_bssid %s current_essid %s current_bss_type %d "
1046 "pm_mode %d ibss_change %d res %d "
1047 "multi_domain_capability_implemented %d "
1048 "international_roaming %d country_string %.3s",
1049 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1050 le16_to_cpu(m->CFP_max_duration),
1051 le16_to_cpu(m->medium_occupancy_limit),
1052 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1053 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1054 m->CFP_period, mac2str(m->current_bssid),
1055 hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1056 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1057 m->res, m->multi_domain_capability_implemented,
1058 m->multi_domain_capability_enabled, m->country_string);
1059exit:
1060 kfree(m);
1061}
1062
1063static void at76_dump_mib_mac(struct at76_priv *priv)
1064{
1065 int ret;
1066 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1067
1068 if (!m)
1069 return;
1070
1071 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1072 if (ret < 0) {
1073 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1074 wiphy_name(priv->hw->wiphy), ret);
1075 goto exit;
1076 }
1077
1078 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1079 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1080 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1081 "scan_type %d scan_channel %d probe_delay %u "
1082 "min_channel_time %d max_channel_time %d listen_int %d "
1083 "desired_ssid %s desired_bssid %s desired_bsstype %d",
1084 wiphy_name(priv->hw->wiphy),
1085 le32_to_cpu(m->max_tx_msdu_lifetime),
1086 le32_to_cpu(m->max_rx_lifetime),
1087 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1088 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1089 m->short_retry_time, m->long_retry_time, m->scan_type,
1090 m->scan_channel, le16_to_cpu(m->probe_delay),
1091 le16_to_cpu(m->min_channel_time),
1092 le16_to_cpu(m->max_channel_time),
1093 le16_to_cpu(m->listen_interval),
1094 hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1095 mac2str(m->desired_bssid), m->desired_bsstype);
1096exit:
1097 kfree(m);
1098}
1099
1100static void at76_dump_mib_phy(struct at76_priv *priv)
1101{
1102 int ret;
1103 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1104
1105 if (!m)
1106 return;
1107
1108 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1109 if (ret < 0) {
1110 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1111 wiphy_name(priv->hw->wiphy), ret);
1112 goto exit;
1113 }
1114
1115 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1116 "sifs_time %d preamble_length %d plcp_header_length %d "
1117 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1118 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1119 "phy_type %d current_reg_domain %d",
1120 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1121 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1122 le16_to_cpu(m->preamble_length),
1123 le16_to_cpu(m->plcp_header_length),
1124 le16_to_cpu(m->mpdu_max_length),
1125 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1126 m->operation_rate_set[1], m->operation_rate_set[2],
1127 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1128 m->phy_type, m->current_reg_domain);
1129exit:
1130 kfree(m);
1131}
1132
1133static void at76_dump_mib_local(struct at76_priv *priv)
1134{
1135 int ret;
1136 struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1137
1138 if (!m)
1139 return;
1140
1141 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1142 if (ret < 0) {
1143 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1144 wiphy_name(priv->hw->wiphy), ret);
1145 goto exit;
1146 }
1147
1148 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1149 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1150 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1151 m->beacon_enable,
1152 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1153 m->preamble_type);
1154exit:
1155 kfree(m);
1156}
1157
1158static void at76_dump_mib_mdomain(struct at76_priv *priv)
1159{
1160 int ret;
1161 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1162
1163 if (!m)
1164 return;
1165
1166 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1167 sizeof(struct mib_mdomain));
1168 if (ret < 0) {
1169 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1170 wiphy_name(priv->hw->wiphy), ret);
1171 goto exit;
1172 }
1173
1174 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1175 wiphy_name(priv->hw->wiphy),
1176 hex2str(m->channel_list, sizeof(m->channel_list)));
1177
1178 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1179 wiphy_name(priv->hw->wiphy),
1180 hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1181exit:
1182 kfree(m);
1183}
1184
1185
1186static int at76_start_monitor(struct at76_priv *priv)
1187{
1188 struct at76_req_scan scan;
1189 int ret;
1190
1191 memset(&scan, 0, sizeof(struct at76_req_scan));
1192 memset(scan.bssid, 0xff, ETH_ALEN);
1193
1194 scan.channel = priv->channel;
1195 scan.scan_type = SCAN_TYPE_PASSIVE;
1196 scan.international_scan = 0;
1197
1198 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1199 if (ret >= 0)
1200 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1201
1202 return ret;
1203}
1204
1205
1206
1207static inline int at76_calc_padding(int wlen)
1208{
1209
1210 wlen += AT76_TX_HDRLEN;
1211
1212 wlen = wlen % 64;
1213
1214 if (wlen < 50)
1215 return 50 - wlen;
1216
1217 if (wlen >= 61)
1218 return 64 + 50 - wlen;
1219
1220 return 0;
1221}
1222
1223static void at76_rx_callback(struct urb *urb)
1224{
1225 struct at76_priv *priv = urb->context;
1226
1227 priv->rx_tasklet.data = (unsigned long)urb;
1228 tasklet_schedule(&priv->rx_tasklet);
1229 return;
1230}
1231
1232static int at76_submit_rx_urb(struct at76_priv *priv)
1233{
1234 int ret;
1235 int size;
1236 struct sk_buff *skb = priv->rx_skb;
1237
1238 if (!priv->rx_urb) {
1239 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
1240 wiphy_name(priv->hw->wiphy), __func__);
1241 return -EFAULT;
1242 }
1243
1244 if (!skb) {
1245 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1246 if (!skb) {
1247 printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
1248 wiphy_name(priv->hw->wiphy));
1249 ret = -ENOMEM;
1250 goto exit;
1251 }
1252 priv->rx_skb = skb;
1253 } else {
1254 skb_push(skb, skb_headroom(skb));
1255 skb_trim(skb, 0);
1256 }
1257
1258 size = skb_tailroom(skb);
1259 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1260 skb_put(skb, size), size, at76_rx_callback, priv);
1261 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1262 if (ret < 0) {
1263 if (ret == -ENODEV)
1264 at76_dbg(DBG_DEVSTART,
1265 "usb_submit_urb returned -ENODEV");
1266 else
1267 printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
1268 wiphy_name(priv->hw->wiphy), ret);
1269 }
1270
1271exit:
1272 if (ret < 0 && ret != -ENODEV)
1273 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
1274 "driver and/or power cycle the device\n",
1275 wiphy_name(priv->hw->wiphy));
1276
1277 return ret;
1278}
1279
1280
1281static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1282{
1283 int ret;
1284 int op_mode;
1285 int blockno = 0;
1286 int bsize;
1287 u8 *block;
1288 u8 *buf = fwe->extfw;
1289 int size = fwe->extfw_size;
1290
1291 if (!buf || !size)
1292 return -ENOENT;
1293
1294 op_mode = at76_get_op_mode(udev);
1295 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1296
1297 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1298 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1299 op_mode);
1300 return -EINVAL;
1301 }
1302
1303 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1304 if (!block)
1305 return -ENOMEM;
1306
1307 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1308
1309
1310 do {
1311 bsize = min_t(int, size, FW_BLOCK_SIZE);
1312 memcpy(block, buf, bsize);
1313 at76_dbg(DBG_DEVSTART,
1314 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1315 size, bsize, blockno);
1316 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1317 if (ret != bsize) {
1318 dev_printk(KERN_ERR, &udev->dev,
1319 "loading %dth firmware block failed: %d\n",
1320 blockno, ret);
1321 goto exit;
1322 }
1323 buf += bsize;
1324 size -= bsize;
1325 blockno++;
1326 } while (bsize > 0);
1327
1328 if (at76_is_505a(fwe->board_type)) {
1329 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1330 schedule_timeout_interruptible(HZ / 5 + 1);
1331 }
1332
1333exit:
1334 kfree(block);
1335 if (ret < 0)
1336 dev_printk(KERN_ERR, &udev->dev,
1337 "downloading external firmware failed: %d\n", ret);
1338 return ret;
1339}
1340
1341
1342static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1343{
1344 int ret;
1345 int need_remap = !at76_is_505a(fwe->board_type);
1346
1347 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1348 need_remap ? 0 : 2 * HZ);
1349
1350 if (ret < 0) {
1351 dev_printk(KERN_ERR, &udev->dev,
1352 "downloading internal fw failed with %d\n", ret);
1353 goto exit;
1354 }
1355
1356 at76_dbg(DBG_DEVSTART, "sending REMAP");
1357
1358
1359 if (need_remap) {
1360 ret = at76_remap(udev);
1361 if (ret < 0) {
1362 dev_printk(KERN_ERR, &udev->dev,
1363 "sending REMAP failed with %d\n", ret);
1364 goto exit;
1365 }
1366 }
1367
1368 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1369 schedule_timeout_interruptible(2 * HZ + 1);
1370 usb_reset_device(udev);
1371
1372exit:
1373 return ret;
1374}
1375
1376static int at76_startup_device(struct at76_priv *priv)
1377{
1378 struct at76_card_config *ccfg = &priv->card_config;
1379 int ret;
1380
1381 at76_dbg(DBG_PARAMS,
1382 "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1383 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1384 priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1385 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1386 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1387 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1388 at76_dbg(DBG_PARAMS,
1389 "%s param: preamble %s rts %d retry %d frag %d "
1390 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1391 preambles[priv->preamble_type], priv->rts_threshold,
1392 priv->short_retry_limit, priv->frag_threshold,
1393 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1394 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1395 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1396 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1397 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1398 at76_dbg(DBG_PARAMS,
1399 "%s param: pm_mode %d pm_period %d auth_mode %s "
1400 "scan_times %d %d scan_mode %s",
1401 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1402 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1403 priv->scan_min_time, priv->scan_max_time,
1404 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1405
1406 memset(ccfg, 0, sizeof(struct at76_card_config));
1407 ccfg->promiscuous_mode = 0;
1408 ccfg->short_retry_limit = priv->short_retry_limit;
1409
1410 if (priv->wep_enabled) {
1411 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1412 ccfg->encryption_type = 2;
1413 else
1414 ccfg->encryption_type = 1;
1415
1416
1417 ccfg->exclude_unencrypted = 1;
1418 } else {
1419 ccfg->exclude_unencrypted = 0;
1420 ccfg->encryption_type = 0;
1421 }
1422
1423 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1424 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1425
1426 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1427
1428 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1429 ccfg->channel = priv->channel;
1430 ccfg->privacy_invoked = priv->wep_enabled;
1431 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1432 ccfg->ssid_len = priv->essid_size;
1433
1434 ccfg->wep_default_key_id = priv->wep_key_id;
1435 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1436 sizeof(priv->wep_keys));
1437
1438 ccfg->short_preamble = priv->preamble_type;
1439 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1440
1441 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1442 sizeof(struct at76_card_config));
1443 if (ret < 0) {
1444 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1445 wiphy_name(priv->hw->wiphy), ret);
1446 return ret;
1447 }
1448
1449 at76_wait_completion(priv, CMD_STARTUP);
1450
1451
1452 memset(priv->bssid, 0, ETH_ALEN);
1453
1454 if (at76_set_radio(priv, 1) == 1)
1455 at76_wait_completion(priv, CMD_RADIO_ON);
1456
1457 ret = at76_set_preamble(priv, priv->preamble_type);
1458 if (ret < 0)
1459 return ret;
1460
1461 ret = at76_set_frag(priv, priv->frag_threshold);
1462 if (ret < 0)
1463 return ret;
1464
1465 ret = at76_set_rts(priv, priv->rts_threshold);
1466 if (ret < 0)
1467 return ret;
1468
1469 ret = at76_set_autorate_fallback(priv,
1470 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1471 if (ret < 0)
1472 return ret;
1473
1474 ret = at76_set_pm_mode(priv);
1475 if (ret < 0)
1476 return ret;
1477
1478 if (at76_debug & DBG_MIB) {
1479 at76_dump_mib_mac(priv);
1480 at76_dump_mib_mac_addr(priv);
1481 at76_dump_mib_mac_mgmt(priv);
1482 at76_dump_mib_mac_wep(priv);
1483 at76_dump_mib_mdomain(priv);
1484 at76_dump_mib_phy(priv);
1485 at76_dump_mib_local(priv);
1486 }
1487
1488 return 0;
1489}
1490
1491
1492static void at76_work_set_promisc(struct work_struct *work)
1493{
1494 struct at76_priv *priv = container_of(work, struct at76_priv,
1495 work_set_promisc);
1496 int ret = 0;
1497
1498 if (priv->device_unplugged)
1499 return;
1500
1501 mutex_lock(&priv->mtx);
1502
1503 priv->mib_buf.type = MIB_LOCAL;
1504 priv->mib_buf.size = 1;
1505 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1506 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1507
1508 ret = at76_set_mib(priv, &priv->mib_buf);
1509 if (ret < 0)
1510 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
1511 wiphy_name(priv->hw->wiphy), ret);
1512
1513 mutex_unlock(&priv->mtx);
1514}
1515
1516
1517static void at76_work_submit_rx(struct work_struct *work)
1518{
1519 struct at76_priv *priv = container_of(work, struct at76_priv,
1520 work_submit_rx);
1521
1522 mutex_lock(&priv->mtx);
1523 at76_submit_rx_urb(priv);
1524 mutex_unlock(&priv->mtx);
1525}
1526
1527static void at76_rx_tasklet(unsigned long param)
1528{
1529 struct urb *urb = (struct urb *)param;
1530 struct at76_priv *priv = urb->context;
1531 struct at76_rx_buffer *buf;
1532 struct ieee80211_rx_status rx_status = { 0 };
1533
1534 if (priv->device_unplugged) {
1535 at76_dbg(DBG_DEVSTART, "device unplugged");
1536 if (urb)
1537 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1538 return;
1539 }
1540
1541 if (!priv->rx_skb || !priv->rx_skb->data)
1542 return;
1543
1544 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1545
1546 if (urb->status != 0) {
1547 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1548 at76_dbg(DBG_URB,
1549 "%s %s: - nonzero Rx bulk status received: %d",
1550 __func__, wiphy_name(priv->hw->wiphy),
1551 urb->status);
1552 return;
1553 }
1554
1555 at76_dbg(DBG_RX_ATMEL_HDR,
1556 "%s: rx frame: rate %d rssi %d noise %d link %d",
1557 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1558 buf->noise_level, buf->link_quality);
1559
1560 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1561 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1562 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1563 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1564
1565 rx_status.signal = buf->rssi;
1566 rx_status.flag |= RX_FLAG_DECRYPTED;
1567 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1568
1569 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1570 priv->rx_skb->len, priv->rx_skb->data_len);
1571 memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1572 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1573
1574
1575 priv->rx_skb = NULL;
1576
1577 at76_submit_rx_urb(priv);
1578}
1579
1580
1581static struct fwentry *at76_load_firmware(struct usb_device *udev,
1582 enum board_type board_type)
1583{
1584 int ret;
1585 char *str;
1586 struct at76_fw_header *fwh;
1587 struct fwentry *fwe = &firmwares[board_type];
1588
1589 mutex_lock(&fw_mutex);
1590
1591 if (fwe->loaded) {
1592 at76_dbg(DBG_FW, "re-using previously loaded fw");
1593 goto exit;
1594 }
1595
1596 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1597 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1598 if (ret < 0) {
1599 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1600 fwe->fwname);
1601 dev_printk(KERN_ERR, &udev->dev,
1602 "you may need to download the firmware from "
1603 "http://developer.berlios.de/projects/at76c503a/\n");
1604 goto exit;
1605 }
1606
1607 at76_dbg(DBG_FW, "got it.");
1608 fwh = (struct at76_fw_header *)(fwe->fw->data);
1609
1610 if (fwe->fw->size <= sizeof(*fwh)) {
1611 dev_printk(KERN_ERR, &udev->dev,
1612 "firmware is too short (0x%zx)\n", fwe->fw->size);
1613 goto exit;
1614 }
1615
1616
1617 fwe->board_type = le32_to_cpu(fwh->board_type);
1618 if (fwe->board_type != board_type) {
1619 dev_printk(KERN_ERR, &udev->dev,
1620 "board type mismatch, requested %u, got %u\n",
1621 board_type, fwe->board_type);
1622 goto exit;
1623 }
1624
1625 fwe->fw_version.major = fwh->major;
1626 fwe->fw_version.minor = fwh->minor;
1627 fwe->fw_version.patch = fwh->patch;
1628 fwe->fw_version.build = fwh->build;
1629
1630 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1631 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1632 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1633 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1634 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1635
1636 fwe->loaded = 1;
1637
1638 dev_printk(KERN_DEBUG, &udev->dev,
1639 "using firmware %s (version %d.%d.%d-%d)\n",
1640 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1641
1642 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1643 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1644 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1645 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1646
1647exit:
1648 mutex_unlock(&fw_mutex);
1649
1650 if (fwe->loaded)
1651 return fwe;
1652 else
1653 return NULL;
1654}
1655
1656static void at76_mac80211_tx_callback(struct urb *urb)
1657{
1658 struct at76_priv *priv = urb->context;
1659 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1660
1661 at76_dbg(DBG_MAC80211, "%s()", __func__);
1662
1663 switch (urb->status) {
1664 case 0:
1665
1666 info->flags |= IEEE80211_TX_STAT_ACK;
1667 break;
1668 case -ENOENT:
1669 case -ECONNRESET:
1670
1671
1672 break;
1673 default:
1674 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1675 __func__, urb->status);
1676 break;
1677 }
1678
1679 memset(&info->status, 0, sizeof(info->status));
1680
1681 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1682
1683 priv->tx_skb = NULL;
1684
1685 ieee80211_wake_queues(priv->hw);
1686}
1687
1688static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1689{
1690 struct at76_priv *priv = hw->priv;
1691 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1692 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1693 int padding, submit_len, ret;
1694
1695 at76_dbg(DBG_MAC80211, "%s()", __func__);
1696
1697 if (priv->tx_urb->status == -EINPROGRESS) {
1698 printk(KERN_ERR "%s: %s called while tx urb is pending\n",
1699 wiphy_name(priv->hw->wiphy), __func__);
1700 return NETDEV_TX_BUSY;
1701 }
1702
1703 ieee80211_stop_queues(hw);
1704
1705 at76_ledtrig_tx_activity();
1706
1707 WARN_ON(priv->tx_skb != NULL);
1708
1709 priv->tx_skb = skb;
1710 padding = at76_calc_padding(skb->len);
1711 submit_len = AT76_TX_HDRLEN + skb->len + padding;
1712
1713
1714 memset(tx_buffer, 0, sizeof(*tx_buffer));
1715 tx_buffer->padding = padding;
1716 tx_buffer->wlength = cpu_to_le16(skb->len);
1717 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1718 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1719 memcpy(tx_buffer->packet, skb->data, skb->len);
1720
1721 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1722 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1723 tx_buffer->padding, tx_buffer->tx_rate);
1724
1725
1726 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1727 "%s(): tx_buffer %d bytes:", __func__, submit_len);
1728 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1729 submit_len, at76_mac80211_tx_callback, priv);
1730 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1731 if (ret) {
1732 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1733 wiphy_name(priv->hw->wiphy), ret);
1734 if (ret == -EINVAL)
1735 printk(KERN_ERR
1736 "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
1737 wiphy_name(priv->hw->wiphy), priv->tx_urb,
1738 priv->tx_urb->hcpriv, priv->tx_urb->complete);
1739 }
1740
1741 return 0;
1742}
1743
1744static int at76_mac80211_start(struct ieee80211_hw *hw)
1745{
1746 struct at76_priv *priv = hw->priv;
1747 int ret;
1748
1749 at76_dbg(DBG_MAC80211, "%s()", __func__);
1750
1751 mutex_lock(&priv->mtx);
1752
1753 ret = at76_submit_rx_urb(priv);
1754 if (ret < 0) {
1755 printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
1756 wiphy_name(priv->hw->wiphy), ret);
1757 goto error;
1758 }
1759
1760 at76_startup_device(priv);
1761
1762 at76_start_monitor(priv);
1763
1764error:
1765 mutex_unlock(&priv->mtx);
1766
1767 return 0;
1768}
1769
1770static void at76_mac80211_stop(struct ieee80211_hw *hw)
1771{
1772 struct at76_priv *priv = hw->priv;
1773
1774 at76_dbg(DBG_MAC80211, "%s()", __func__);
1775
1776 cancel_delayed_work(&priv->dwork_hw_scan);
1777 cancel_work_sync(&priv->work_set_promisc);
1778
1779 mutex_lock(&priv->mtx);
1780
1781 if (!priv->device_unplugged) {
1782
1783
1784 at76_set_radio(priv, 0);
1785
1786
1787
1788 usb_kill_urb(priv->rx_urb);
1789 }
1790
1791 mutex_unlock(&priv->mtx);
1792}
1793
1794static int at76_add_interface(struct ieee80211_hw *hw,
1795 struct ieee80211_if_init_conf *conf)
1796{
1797 struct at76_priv *priv = hw->priv;
1798 int ret = 0;
1799
1800 at76_dbg(DBG_MAC80211, "%s()", __func__);
1801
1802 mutex_lock(&priv->mtx);
1803
1804 switch (conf->type) {
1805 case NL80211_IFTYPE_STATION:
1806 priv->iw_mode = IW_MODE_INFRA;
1807 break;
1808 default:
1809 ret = -EOPNOTSUPP;
1810 goto exit;
1811 }
1812
1813exit:
1814 mutex_unlock(&priv->mtx);
1815
1816 return ret;
1817}
1818
1819static void at76_remove_interface(struct ieee80211_hw *hw,
1820 struct ieee80211_if_init_conf *conf)
1821{
1822 at76_dbg(DBG_MAC80211, "%s()", __func__);
1823}
1824
1825static int at76_join(struct at76_priv *priv)
1826{
1827 struct at76_req_join join;
1828 int ret;
1829
1830 memset(&join, 0, sizeof(struct at76_req_join));
1831 memcpy(join.essid, priv->essid, priv->essid_size);
1832 join.essid_size = priv->essid_size;
1833 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1834 join.bss_type = INFRASTRUCTURE_MODE;
1835 join.channel = priv->channel;
1836 join.timeout = cpu_to_le16(2000);
1837
1838 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1839 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1840 sizeof(struct at76_req_join));
1841
1842 if (ret < 0) {
1843 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1844 wiphy_name(priv->hw->wiphy), ret);
1845 return 0;
1846 }
1847
1848 ret = at76_wait_completion(priv, CMD_JOIN);
1849 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1850 if (ret != CMD_STATUS_COMPLETE) {
1851 printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
1852 wiphy_name(priv->hw->wiphy), ret);
1853 return 0;
1854 }
1855
1856 at76_set_pm_mode(priv);
1857
1858 return 0;
1859}
1860
1861static void at76_dwork_hw_scan(struct work_struct *work)
1862{
1863 struct at76_priv *priv = container_of(work, struct at76_priv,
1864 dwork_hw_scan.work);
1865 int ret;
1866
1867 if (priv->device_unplugged)
1868 return;
1869
1870 mutex_lock(&priv->mtx);
1871
1872 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1873 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1874
1875
1876
1877 if (ret != CMD_STATUS_COMPLETE) {
1878 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1879 SCAN_POLL_INTERVAL);
1880 mutex_unlock(&priv->mtx);
1881 return;
1882 }
1883
1884 if (is_valid_ether_addr(priv->bssid))
1885 at76_join(priv);
1886
1887 mutex_unlock(&priv->mtx);
1888
1889 ieee80211_scan_completed(priv->hw, false);
1890
1891 ieee80211_wake_queues(priv->hw);
1892}
1893
1894static int at76_hw_scan(struct ieee80211_hw *hw,
1895 struct cfg80211_scan_request *req)
1896{
1897 struct at76_priv *priv = hw->priv;
1898 struct at76_req_scan scan;
1899 u8 *ssid = NULL;
1900 int ret, len = 0;
1901
1902 at76_dbg(DBG_MAC80211, "%s():", __func__);
1903
1904 if (priv->device_unplugged)
1905 return 0;
1906
1907 mutex_lock(&priv->mtx);
1908
1909 ieee80211_stop_queues(hw);
1910
1911 memset(&scan, 0, sizeof(struct at76_req_scan));
1912 memset(scan.bssid, 0xFF, ETH_ALEN);
1913
1914 if (req->n_ssids) {
1915 scan.scan_type = SCAN_TYPE_ACTIVE;
1916 ssid = req->ssids[0].ssid;
1917 len = req->ssids[0].ssid_len;
1918 } else {
1919 scan.scan_type = SCAN_TYPE_PASSIVE;
1920 }
1921
1922 if (len) {
1923 memcpy(scan.essid, ssid, len);
1924 scan.essid_size = len;
1925 }
1926
1927 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1928 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1929 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1930 scan.international_scan = 0;
1931
1932 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1933 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1934
1935 if (ret < 0) {
1936 err("CMD_SCAN failed: %d", ret);
1937 goto exit;
1938 }
1939
1940 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1941 SCAN_POLL_INTERVAL);
1942
1943exit:
1944 mutex_unlock(&priv->mtx);
1945
1946 return 0;
1947}
1948
1949static int at76_config(struct ieee80211_hw *hw, u32 changed)
1950{
1951 struct at76_priv *priv = hw->priv;
1952
1953 at76_dbg(DBG_MAC80211, "%s(): channel %d",
1954 __func__, hw->conf.channel->hw_value);
1955 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1956
1957 mutex_lock(&priv->mtx);
1958
1959 priv->channel = hw->conf.channel->hw_value;
1960
1961 if (is_valid_ether_addr(priv->bssid))
1962 at76_join(priv);
1963 else
1964 at76_start_monitor(priv);
1965
1966 mutex_unlock(&priv->mtx);
1967
1968 return 0;
1969}
1970
1971static void at76_bss_info_changed(struct ieee80211_hw *hw,
1972 struct ieee80211_vif *vif,
1973 struct ieee80211_bss_conf *conf,
1974 u32 changed)
1975{
1976 struct at76_priv *priv = hw->priv;
1977
1978 at76_dbg(DBG_MAC80211, "%s():", __func__);
1979
1980 if (!(changed & BSS_CHANGED_BSSID))
1981 return;
1982
1983 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
1984
1985 mutex_lock(&priv->mtx);
1986
1987 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1988
1989 if (is_valid_ether_addr(priv->bssid))
1990
1991 at76_join(priv);
1992
1993 mutex_unlock(&priv->mtx);
1994}
1995
1996
1997static void at76_configure_filter(struct ieee80211_hw *hw,
1998 unsigned int changed_flags,
1999 unsigned int *total_flags, u64 multicast)
2000{
2001 struct at76_priv *priv = hw->priv;
2002 int flags;
2003
2004 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2005 "total_flags=0x%08x",
2006 __func__, changed_flags, *total_flags);
2007
2008 flags = changed_flags & AT76_SUPPORTED_FILTERS;
2009 *total_flags = AT76_SUPPORTED_FILTERS;
2010
2011
2012 if (priv->device_unplugged)
2013 return;
2014
2015
2016
2017
2018
2019 if (flags && !priv->promisc) {
2020
2021 priv->promisc = 1;
2022 } else if (!flags && priv->promisc) {
2023
2024 priv->promisc = 0;
2025 } else
2026 return;
2027
2028 ieee80211_queue_work(hw, &priv->work_set_promisc);
2029}
2030
2031static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2032 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2033 struct ieee80211_key_conf *key)
2034{
2035 struct at76_priv *priv = hw->priv;
2036
2037 int i;
2038
2039 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2040 "key->keylen %d",
2041 __func__, cmd, key->alg, key->keyidx, key->keylen);
2042
2043 if (key->alg != ALG_WEP)
2044 return -EOPNOTSUPP;
2045
2046 key->hw_key_idx = key->keyidx;
2047
2048 mutex_lock(&priv->mtx);
2049
2050 switch (cmd) {
2051 case SET_KEY:
2052 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2053 priv->wep_keys_len[key->keyidx] = key->keylen;
2054
2055
2056 priv->wep_key_id = key->keyidx;
2057
2058 break;
2059 case DISABLE_KEY:
2060 default:
2061 priv->wep_keys_len[key->keyidx] = 0;
2062 break;
2063 }
2064
2065 priv->wep_enabled = 0;
2066
2067 for (i = 0; i < WEP_KEYS; i++) {
2068 if (priv->wep_keys_len[i] != 0)
2069 priv->wep_enabled = 1;
2070 }
2071
2072 at76_startup_device(priv);
2073
2074 mutex_unlock(&priv->mtx);
2075
2076 return 0;
2077}
2078
2079static const struct ieee80211_ops at76_ops = {
2080 .tx = at76_mac80211_tx,
2081 .add_interface = at76_add_interface,
2082 .remove_interface = at76_remove_interface,
2083 .config = at76_config,
2084 .bss_info_changed = at76_bss_info_changed,
2085 .configure_filter = at76_configure_filter,
2086 .start = at76_mac80211_start,
2087 .stop = at76_mac80211_stop,
2088 .hw_scan = at76_hw_scan,
2089 .set_key = at76_set_key,
2090};
2091
2092
2093static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2094{
2095 struct ieee80211_hw *hw;
2096 struct at76_priv *priv;
2097
2098 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2099 if (!hw) {
2100 printk(KERN_ERR DRIVER_NAME ": could not register"
2101 " ieee80211_hw\n");
2102 return NULL;
2103 }
2104
2105 priv = hw->priv;
2106 priv->hw = hw;
2107
2108 priv->udev = udev;
2109
2110 mutex_init(&priv->mtx);
2111 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2112 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2113 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2114
2115 tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2116
2117 priv->pm_mode = AT76_PM_OFF;
2118 priv->pm_period = 0;
2119
2120
2121 priv->hw->channel_change_time = 100000;
2122
2123 return priv;
2124}
2125
2126static int at76_alloc_urbs(struct at76_priv *priv,
2127 struct usb_interface *interface)
2128{
2129 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2130 int i;
2131 int buffer_size;
2132 struct usb_host_interface *iface_desc;
2133
2134 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2135
2136 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2137 interface->altsetting[0].desc.bNumEndpoints);
2138
2139 ep_in = NULL;
2140 ep_out = NULL;
2141 iface_desc = interface->cur_altsetting;
2142 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2143 endpoint = &iface_desc->endpoint[i].desc;
2144
2145 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2146 __func__, i, endpoint->bEndpointAddress,
2147 endpoint->bmAttributes);
2148
2149 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2150 ep_in = endpoint;
2151
2152 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2153 ep_out = endpoint;
2154 }
2155
2156 if (!ep_in || !ep_out) {
2157 dev_printk(KERN_ERR, &interface->dev,
2158 "bulk endpoints missing\n");
2159 return -ENXIO;
2160 }
2161
2162 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2163 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2164
2165 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2166 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2167 if (!priv->rx_urb || !priv->tx_urb) {
2168 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2169 return -ENOMEM;
2170 }
2171
2172 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2173 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2174 if (!priv->bulk_out_buffer) {
2175 dev_printk(KERN_ERR, &interface->dev,
2176 "cannot allocate output buffer\n");
2177 return -ENOMEM;
2178 }
2179
2180 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2181
2182 return 0;
2183}
2184
2185static struct ieee80211_rate at76_rates[] = {
2186 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2187 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2188 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2189 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2190};
2191
2192static struct ieee80211_channel at76_channels[] = {
2193 { .center_freq = 2412, .hw_value = 1 },
2194 { .center_freq = 2417, .hw_value = 2 },
2195 { .center_freq = 2422, .hw_value = 3 },
2196 { .center_freq = 2427, .hw_value = 4 },
2197 { .center_freq = 2432, .hw_value = 5 },
2198 { .center_freq = 2437, .hw_value = 6 },
2199 { .center_freq = 2442, .hw_value = 7 },
2200 { .center_freq = 2447, .hw_value = 8 },
2201 { .center_freq = 2452, .hw_value = 9 },
2202 { .center_freq = 2457, .hw_value = 10 },
2203 { .center_freq = 2462, .hw_value = 11 },
2204 { .center_freq = 2467, .hw_value = 12 },
2205 { .center_freq = 2472, .hw_value = 13 },
2206 { .center_freq = 2484, .hw_value = 14 }
2207};
2208
2209static struct ieee80211_supported_band at76_supported_band = {
2210 .channels = at76_channels,
2211 .n_channels = ARRAY_SIZE(at76_channels),
2212 .bitrates = at76_rates,
2213 .n_bitrates = ARRAY_SIZE(at76_rates),
2214};
2215
2216
2217static int at76_init_new_device(struct at76_priv *priv,
2218 struct usb_interface *interface)
2219{
2220 int ret;
2221
2222
2223
2224
2225 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2226 interface->cur_altsetting->desc.bNumEndpoints);
2227
2228 ret = at76_alloc_urbs(priv, interface);
2229 if (ret < 0)
2230 goto exit;
2231
2232
2233 ret = at76_get_hw_config(priv);
2234 if (ret < 0) {
2235 dev_printk(KERN_ERR, &interface->dev,
2236 "cannot get MAC address\n");
2237 goto exit;
2238 }
2239
2240 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2241
2242 priv->channel = DEF_CHANNEL;
2243 priv->iw_mode = IW_MODE_INFRA;
2244 priv->rts_threshold = DEF_RTS_THRESHOLD;
2245 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2246 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2247 priv->txrate = TX_RATE_AUTO;
2248 priv->preamble_type = PREAMBLE_TYPE_LONG;
2249 priv->beacon_period = 100;
2250 priv->auth_mode = WLAN_AUTH_OPEN;
2251 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2252 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2253 priv->scan_mode = SCAN_TYPE_ACTIVE;
2254 priv->device_unplugged = 0;
2255
2256
2257 priv->hw->wiphy->max_scan_ssids = 1;
2258 priv->hw->wiphy->max_scan_ie_len = 0;
2259 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2260 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2261 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2262 IEEE80211_HW_SIGNAL_UNSPEC;
2263 priv->hw->max_signal = 100;
2264
2265 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2266 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2267
2268 ret = ieee80211_register_hw(priv->hw);
2269 if (ret) {
2270 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2271 ret);
2272 goto exit;
2273 }
2274
2275 priv->mac80211_registered = 1;
2276
2277 printk(KERN_INFO "%s: USB %s, MAC %s, firmware %d.%d.%d-%d\n",
2278 wiphy_name(priv->hw->wiphy),
2279 dev_name(&interface->dev), mac2str(priv->mac_addr),
2280 priv->fw_version.major, priv->fw_version.minor,
2281 priv->fw_version.patch, priv->fw_version.build);
2282 printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n",
2283 wiphy_name(priv->hw->wiphy),
2284 priv->regulatory_domain, priv->domain->name);
2285
2286exit:
2287 return ret;
2288}
2289
2290static void at76_delete_device(struct at76_priv *priv)
2291{
2292 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2293
2294
2295 priv->device_unplugged = 1;
2296
2297 tasklet_kill(&priv->rx_tasklet);
2298
2299 if (priv->mac80211_registered)
2300 ieee80211_unregister_hw(priv->hw);
2301
2302 if (priv->tx_urb) {
2303 usb_kill_urb(priv->tx_urb);
2304 usb_free_urb(priv->tx_urb);
2305 }
2306 if (priv->rx_urb) {
2307 usb_kill_urb(priv->rx_urb);
2308 usb_free_urb(priv->rx_urb);
2309 }
2310
2311 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2312
2313 kfree(priv->bulk_out_buffer);
2314
2315 del_timer_sync(&ledtrig_tx_timer);
2316
2317 kfree_skb(priv->rx_skb);
2318
2319 usb_put_dev(priv->udev);
2320
2321 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2322 __func__);
2323 ieee80211_free_hw(priv->hw);
2324
2325 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2326}
2327
2328static int at76_probe(struct usb_interface *interface,
2329 const struct usb_device_id *id)
2330{
2331 int ret;
2332 struct at76_priv *priv;
2333 struct fwentry *fwe;
2334 struct usb_device *udev;
2335 int op_mode;
2336 int need_ext_fw = 0;
2337 struct mib_fw_version fwv;
2338 int board_type = (int)id->driver_info;
2339
2340 udev = usb_get_dev(interface_to_usbdev(interface));
2341
2342
2343 fwe = at76_load_firmware(udev, board_type);
2344 if (!fwe) {
2345 ret = -ENOENT;
2346 goto error;
2347 }
2348
2349 op_mode = at76_get_op_mode(udev);
2350
2351 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2352
2353
2354
2355
2356 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2357 dev_printk(KERN_ERR, &interface->dev,
2358 "cannot handle a device in HW_CONFIG_MODE\n");
2359 ret = -EBUSY;
2360 goto error;
2361 }
2362
2363 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2364 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2365
2366 dev_printk(KERN_DEBUG, &interface->dev,
2367 "downloading internal firmware\n");
2368 ret = at76_load_internal_fw(udev, fwe);
2369 if (ret < 0) {
2370 dev_printk(KERN_ERR, &interface->dev,
2371 "error %d downloading internal firmware\n",
2372 ret);
2373 goto error;
2374 }
2375 usb_put_dev(udev);
2376 return ret;
2377 }
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2388 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2389 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2390 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2391 need_ext_fw = 1;
2392 } else
2393
2394 need_ext_fw = 1;
2395
2396 if (need_ext_fw) {
2397 dev_printk(KERN_DEBUG, &interface->dev,
2398 "downloading external firmware\n");
2399
2400 ret = at76_load_external_fw(udev, fwe);
2401 if (ret)
2402 goto error;
2403
2404
2405 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2406 if (ret < 0) {
2407 dev_printk(KERN_ERR, &interface->dev,
2408 "error %d getting firmware version\n", ret);
2409 goto error;
2410 }
2411 }
2412
2413 priv = at76_alloc_new_device(udev);
2414 if (!priv) {
2415 ret = -ENOMEM;
2416 goto error;
2417 }
2418
2419 usb_set_intfdata(interface, priv);
2420
2421 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2422 priv->board_type = board_type;
2423
2424 ret = at76_init_new_device(priv, interface);
2425 if (ret < 0)
2426 at76_delete_device(priv);
2427
2428 return ret;
2429
2430error:
2431 usb_put_dev(udev);
2432 return ret;
2433}
2434
2435static void at76_disconnect(struct usb_interface *interface)
2436{
2437 struct at76_priv *priv;
2438
2439 priv = usb_get_intfdata(interface);
2440 usb_set_intfdata(interface, NULL);
2441
2442
2443 if (!priv)
2444 return;
2445
2446 printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
2447 at76_delete_device(priv);
2448 dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2449}
2450
2451
2452static struct usb_driver at76_driver = {
2453 .name = DRIVER_NAME,
2454 .probe = at76_probe,
2455 .disconnect = at76_disconnect,
2456 .id_table = dev_table,
2457};
2458
2459static int __init at76_mod_init(void)
2460{
2461 int result;
2462
2463 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2464
2465 mutex_init(&fw_mutex);
2466
2467
2468 result = usb_register(&at76_driver);
2469 if (result < 0)
2470 printk(KERN_ERR DRIVER_NAME
2471 ": usb_register failed (status %d)\n", result);
2472
2473 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2474 return result;
2475}
2476
2477static void __exit at76_mod_exit(void)
2478{
2479 int i;
2480
2481 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2482 usb_deregister(&at76_driver);
2483 for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2484 if (firmwares[i].fw)
2485 release_firmware(firmwares[i].fw);
2486 }
2487 led_trigger_unregister_simple(ledtrig_tx);
2488}
2489
2490module_param_named(debug, at76_debug, uint, 0600);
2491MODULE_PARM_DESC(debug, "Debugging level");
2492
2493module_init(at76_mod_init);
2494module_exit(at76_mod_exit);
2495
2496MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2497MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2498MODULE_AUTHOR("Alex <alex@foogod.com>");
2499MODULE_AUTHOR("Nick Jones");
2500MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2501MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2502MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2503MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2504MODULE_DESCRIPTION(DRIVER_DESC);
2505MODULE_LICENSE("GPL");
2506
