at76c50x-usb: Don't register led_trigger if usb_register_driver failed
[muen/linux.git] / drivers / net / wireless / atmel / at76c50x-usb.c
1 /*
2  * at76c503/at76c505 USB driver
3  *
4  * Copyright (c) 2002 - 2003 Oliver Kurth
5  * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
6  * Copyright (c) 2004 Nick Jones
7  * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
8  * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
9  * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
10  * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License as
14  * published by the Free Software Foundation; either version 2 of
15  * the License, or (at your option) any later version.
16  *
17  * This file is part of the Berlios driver for WLAN USB devices based on the
18  * Atmel AT76C503A/505/505A.
19  *
20  * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
21  *
22  * TODO list is at the wiki:
23  *
24  * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
25  *
26  */
27
28 #include <linux/init.h>
29 #include <linux/kernel.h>
30 #include <linux/sched.h>
31 #include <linux/errno.h>
32 #include <linux/slab.h>
33 #include <linux/module.h>
34 #include <linux/spinlock.h>
35 #include <linux/list.h>
36 #include <linux/usb.h>
37 #include <linux/netdevice.h>
38 #include <linux/if_arp.h>
39 #include <linux/etherdevice.h>
40 #include <linux/ethtool.h>
41 #include <linux/wireless.h>
42 #include <net/iw_handler.h>
43 #include <net/ieee80211_radiotap.h>
44 #include <linux/firmware.h>
45 #include <linux/leds.h>
46 #include <net/mac80211.h>
47
48 #include "at76c50x-usb.h"
49
50 /* Version information */
51 #define DRIVER_NAME "at76c50x-usb"
52 #define DRIVER_VERSION  "0.17"
53 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
54
55 /* at76_debug bits */
56 #define DBG_PROGRESS            0x00000001      /* authentication/accociation */
57 #define DBG_BSS_TABLE           0x00000002      /* show BSS table after scans */
58 #define DBG_IOCTL               0x00000004      /* ioctl calls / settings */
59 #define DBG_MAC_STATE           0x00000008      /* MAC state transitions */
60 #define DBG_TX_DATA             0x00000010      /* tx header */
61 #define DBG_TX_DATA_CONTENT     0x00000020      /* tx content */
62 #define DBG_TX_MGMT             0x00000040      /* tx management */
63 #define DBG_RX_DATA             0x00000080      /* rx data header */
64 #define DBG_RX_DATA_CONTENT     0x00000100      /* rx data content */
65 #define DBG_RX_MGMT             0x00000200      /* rx mgmt frame headers */
66 #define DBG_RX_BEACON           0x00000400      /* rx beacon */
67 #define DBG_RX_CTRL             0x00000800      /* rx control */
68 #define DBG_RX_MGMT_CONTENT     0x00001000      /* rx mgmt content */
69 #define DBG_RX_FRAGS            0x00002000      /* rx data fragment handling */
70 #define DBG_DEVSTART            0x00004000      /* fw download, device start */
71 #define DBG_URB                 0x00008000      /* rx urb status, ... */
72 #define DBG_RX_ATMEL_HDR        0x00010000      /* Atmel-specific Rx headers */
73 #define DBG_PROC_ENTRY          0x00020000      /* procedure entries/exits */
74 #define DBG_PM                  0x00040000      /* power management settings */
75 #define DBG_BSS_MATCH           0x00080000      /* BSS match failures */
76 #define DBG_PARAMS              0x00100000      /* show configured parameters */
77 #define DBG_WAIT_COMPLETE       0x00200000      /* command completion */
78 #define DBG_RX_FRAGS_SKB        0x00400000      /* skb header of Rx fragments */
79 #define DBG_BSS_TABLE_RM        0x00800000      /* purging bss table entries */
80 #define DBG_MONITOR_MODE        0x01000000      /* monitor mode */
81 #define DBG_MIB                 0x02000000      /* dump all MIBs on startup */
82 #define DBG_MGMT_TIMER          0x04000000      /* dump mgmt_timer ops */
83 #define DBG_WE_EVENTS           0x08000000      /* dump wireless events */
84 #define DBG_FW                  0x10000000      /* firmware download */
85 #define DBG_DFU                 0x20000000      /* device firmware upgrade */
86 #define DBG_CMD                 0x40000000
87 #define DBG_MAC80211            0x80000000
88
89 #define DBG_DEFAULTS            0
90
91 /* Use our own dbg macro */
92 #define at76_dbg(bits, format, arg...)                                  \
93 do {                                                                    \
94         if (at76_debug & (bits))                                        \
95                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
96 } while (0)
97
98 #define at76_dbg_dump(bits, buf, len, format, arg...)                   \
99 do {                                                                    \
100         if (at76_debug & (bits)) {                                      \
101                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
102                 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
103         }                                                               \
104 } while (0)
105
106 static uint at76_debug = DBG_DEFAULTS;
107
108 /* Protect against concurrent firmware loading and parsing */
109 static struct mutex fw_mutex;
110
111 static struct fwentry firmwares[] = {
112         [0] = { "" },
113         [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
114         [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
115         [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
116         [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
117         [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
118         [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
119         [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
120         [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
121 };
122 MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
123 MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
124 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
125 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
126 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
127 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
128 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
129 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
130
131 #define USB_DEVICE_DATA(__ops)  .driver_info = (kernel_ulong_t)(__ops)
132
133 static const struct usb_device_id dev_table[] = {
134         /*
135          * at76c503-i3861
136          */
137         /* Generic AT76C503/3861 device */
138         { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
139         /* Linksys WUSB11 v2.1/v2.6 */
140         { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
141         /* Netgear MA101 rev. A */
142         { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
143         /* Tekram U300C / Allnet ALL0193 */
144         { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
145         /* HP HN210W J7801A */
146         { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
147         /* Sitecom/Z-Com/Zyxel M4Y-750 */
148         { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
149         /* Dynalink/Askey WLL013 (intersil) */
150         { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
151         /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
152         { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
153         /* BenQ AWL300 */
154         { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
155         /* Addtron AWU-120, Compex WLU11 */
156         { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
157         /* Intel AP310 AnyPoint II USB */
158         { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
159         /* Dynalink L11U */
160         { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
161         /* Arescom WL-210, FCC id 07J-GL2411USB */
162         { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
163         /* I-O DATA WN-B11/USB */
164         { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
165         /* BT Voyager 1010 */
166         { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
167         /*
168          * at76c503-i3863
169          */
170         /* Generic AT76C503/3863 device */
171         { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
172         /* Samsung SWL-2100U */
173         { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
174         /*
175          * at76c503-rfmd
176          */
177         /* Generic AT76C503/RFMD device */
178         { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
179         /* Dynalink/Askey WLL013 (rfmd) */
180         { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
181         /* Linksys WUSB11 v2.6 */
182         { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
183         /* Network Everywhere NWU11B */
184         { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
185         /* Netgear MA101 rev. B */
186         { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
187         /* D-Link DWL-120 rev. E */
188         { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
189         /* Actiontec 802UAT1, HWU01150-01UK */
190         { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
191         /* AirVast W-Buddie WN210 */
192         { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
193         /* Dick Smith Electronics XH1153 802.11b USB adapter */
194         { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
195         /* CNet CNUSB611 */
196         { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
197         /* FiberLine FL-WL200U */
198         { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
199         /* BenQ AWL400 USB stick */
200         { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
201         /* 3Com 3CRSHEW696 */
202         { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
203         /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
204         { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
205         /* Belkin F5D6050, version 2 */
206         { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
207         /* iBlitzz, BWU613 (not *B or *SB) */
208         { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
209         /* Gigabyte GN-WLBM101 */
210         { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
211         /* Planex GW-US11S */
212         { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
213         /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
214         { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
215         /* Corega Wireless LAN USB-11 mini */
216         { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
217         /* Corega Wireless LAN USB-11 mini2 */
218         { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
219         /* Uniden PCW100 */
220         { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
221         /*
222          * at76c503-rfmd-acc
223          */
224         /* SMC2664W */
225         { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
226         /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
227         { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
228         /*
229          * at76c505-rfmd
230          */
231         /* Generic AT76C505/RFMD */
232         { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
233         /*
234          * at76c505-rfmd2958
235          */
236         /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
237         { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
238         /* Fiberline FL-WL240U */
239         { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
240         /* CNet CNUSB-611G */
241         { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
242         /* Linksys WUSB11 v2.8 */
243         { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
244         /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
245         { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
246         /* Corega WLAN USB Stick 11 */
247         { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
248         /* Microstar MSI Box MS6978 */
249         { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
250         /*
251          * at76c505a-rfmd2958
252          */
253         /* Generic AT76C505A device */
254         { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
255         /* Generic AT76C505AS device */
256         { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
257         /* Siemens Gigaset USB WLAN Adapter 11 */
258         { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
259         /* OQO Model 01+ Internal Wi-Fi */
260         { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
261         /*
262          * at76c505amx-rfmd
263          */
264         /* Generic AT76C505AMX device */
265         { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
266         { }
267 };
268
269 MODULE_DEVICE_TABLE(usb, dev_table);
270
271 /* Supported rates of this hardware, bit 7 marks basic rates */
272 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
273
274 static const char *const preambles[] = { "long", "short", "auto" };
275
276 /* Firmware download */
277 /* DFU states */
278 #define STATE_IDLE                      0x00
279 #define STATE_DETACH                    0x01
280 #define STATE_DFU_IDLE                  0x02
281 #define STATE_DFU_DOWNLOAD_SYNC         0x03
282 #define STATE_DFU_DOWNLOAD_BUSY         0x04
283 #define STATE_DFU_DOWNLOAD_IDLE         0x05
284 #define STATE_DFU_MANIFEST_SYNC         0x06
285 #define STATE_DFU_MANIFEST              0x07
286 #define STATE_DFU_MANIFEST_WAIT_RESET   0x08
287 #define STATE_DFU_UPLOAD_IDLE           0x09
288 #define STATE_DFU_ERROR                 0x0a
289
290 /* DFU commands */
291 #define DFU_DETACH                      0
292 #define DFU_DNLOAD                      1
293 #define DFU_UPLOAD                      2
294 #define DFU_GETSTATUS                   3
295 #define DFU_CLRSTATUS                   4
296 #define DFU_GETSTATE                    5
297 #define DFU_ABORT                       6
298
299 #define FW_BLOCK_SIZE 1024
300
301 struct dfu_status {
302         unsigned char status;
303         unsigned char poll_timeout[3];
304         unsigned char state;
305         unsigned char string;
306 } __packed;
307
308 static inline int at76_is_intersil(enum board_type board)
309 {
310         return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
311 }
312
313 static inline int at76_is_503rfmd(enum board_type board)
314 {
315         return (board == BOARD_503 || board == BOARD_503_ACC);
316 }
317
318 static inline int at76_is_505a(enum board_type board)
319 {
320         return (board == BOARD_505A || board == BOARD_505AMX);
321 }
322
323 /* Load a block of the first (internal) part of the firmware */
324 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
325                                   void *block, int size)
326 {
327         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
328                                USB_TYPE_CLASS | USB_DIR_OUT |
329                                USB_RECIP_INTERFACE, blockno, 0, block, size,
330                                USB_CTRL_GET_TIMEOUT);
331 }
332
333 static int at76_dfu_get_status(struct usb_device *udev,
334                                struct dfu_status *status)
335 {
336         int ret;
337
338         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
339                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
340                               0, 0, status, sizeof(struct dfu_status),
341                               USB_CTRL_GET_TIMEOUT);
342         return ret;
343 }
344
345 static int at76_dfu_get_state(struct usb_device *udev, u8 *state)
346 {
347         int ret;
348
349         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
350                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
351                               0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
352         return ret;
353 }
354
355 /* Convert timeout from the DFU status to jiffies */
356 static inline unsigned long at76_get_timeout(struct dfu_status *s)
357 {
358         return msecs_to_jiffies((s->poll_timeout[2] << 16)
359                                 | (s->poll_timeout[1] << 8)
360                                 | (s->poll_timeout[0]));
361 }
362
363 /* Load internal firmware from the buffer.  If manifest_sync_timeout > 0, use
364  * its value in jiffies in the MANIFEST_SYNC state.  */
365 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
366                                 int manifest_sync_timeout)
367 {
368         int ret = 0;
369         int need_dfu_state = 1;
370         int is_done = 0;
371         u32 dfu_timeout = 0;
372         int bsize = 0;
373         int blockno = 0;
374         struct dfu_status *dfu_stat_buf = NULL;
375         u8 *dfu_state = NULL;
376         u8 *block = NULL;
377
378         at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
379                  manifest_sync_timeout);
380
381         if (!size) {
382                 dev_err(&udev->dev, "FW buffer length invalid!\n");
383                 return -EINVAL;
384         }
385
386         dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL);
387         if (!dfu_stat_buf) {
388                 ret = -ENOMEM;
389                 goto exit;
390         }
391
392         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
393         if (!block) {
394                 ret = -ENOMEM;
395                 goto exit;
396         }
397
398         dfu_state = kmalloc(sizeof(u8), GFP_KERNEL);
399         if (!dfu_state) {
400                 ret = -ENOMEM;
401                 goto exit;
402         }
403         *dfu_state = 0;
404
405         do {
406                 if (need_dfu_state) {
407                         ret = at76_dfu_get_state(udev, dfu_state);
408                         if (ret < 0) {
409                                 dev_err(&udev->dev,
410                                         "cannot get DFU state: %d\n", ret);
411                                 goto exit;
412                         }
413                         need_dfu_state = 0;
414                 }
415
416                 switch (*dfu_state) {
417                 case STATE_DFU_DOWNLOAD_SYNC:
418                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
419                         ret = at76_dfu_get_status(udev, dfu_stat_buf);
420                         if (ret >= 0) {
421                                 *dfu_state = dfu_stat_buf->state;
422                                 dfu_timeout = at76_get_timeout(dfu_stat_buf);
423                                 need_dfu_state = 0;
424                         } else
425                                 dev_err(&udev->dev,
426                                         "at76_dfu_get_status returned %d\n",
427                                         ret);
428                         break;
429
430                 case STATE_DFU_DOWNLOAD_BUSY:
431                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
432                         need_dfu_state = 1;
433
434                         at76_dbg(DBG_DFU, "DFU: Resetting device");
435                         schedule_timeout_interruptible(dfu_timeout);
436                         break;
437
438                 case STATE_DFU_DOWNLOAD_IDLE:
439                         at76_dbg(DBG_DFU, "DOWNLOAD...");
440                         /* fall through */
441                 case STATE_DFU_IDLE:
442                         at76_dbg(DBG_DFU, "DFU IDLE");
443
444                         bsize = min_t(int, size, FW_BLOCK_SIZE);
445                         memcpy(block, buf, bsize);
446                         at76_dbg(DBG_DFU, "int fw, size left = %5d, "
447                                  "bsize = %4d, blockno = %2d", size, bsize,
448                                  blockno);
449                         ret =
450                             at76_load_int_fw_block(udev, blockno, block, bsize);
451                         buf += bsize;
452                         size -= bsize;
453                         blockno++;
454
455                         if (ret != bsize)
456                                 dev_err(&udev->dev,
457                                         "at76_load_int_fw_block returned %d\n",
458                                         ret);
459                         need_dfu_state = 1;
460                         break;
461
462                 case STATE_DFU_MANIFEST_SYNC:
463                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
464
465                         ret = at76_dfu_get_status(udev, dfu_stat_buf);
466                         if (ret < 0)
467                                 break;
468
469                         *dfu_state = dfu_stat_buf->state;
470                         dfu_timeout = at76_get_timeout(dfu_stat_buf);
471                         need_dfu_state = 0;
472
473                         /* override the timeout from the status response,
474                            needed for AT76C505A */
475                         if (manifest_sync_timeout > 0)
476                                 dfu_timeout = manifest_sync_timeout;
477
478                         at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
479                         schedule_timeout_interruptible(dfu_timeout);
480                         break;
481
482                 case STATE_DFU_MANIFEST:
483                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
484                         is_done = 1;
485                         break;
486
487                 case STATE_DFU_MANIFEST_WAIT_RESET:
488                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
489                         is_done = 1;
490                         break;
491
492                 case STATE_DFU_UPLOAD_IDLE:
493                         at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
494                         break;
495
496                 case STATE_DFU_ERROR:
497                         at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
498                         ret = -EPIPE;
499                         break;
500
501                 default:
502                         at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", *dfu_state);
503                         ret = -EINVAL;
504                         break;
505                 }
506         } while (!is_done && (ret >= 0));
507
508 exit:
509         kfree(dfu_state);
510         kfree(block);
511         kfree(dfu_stat_buf);
512
513         if (ret >= 0)
514                 ret = 0;
515
516         return ret;
517 }
518
519 /* LED trigger */
520 static int tx_activity;
521 static void at76_ledtrig_tx_timerfunc(struct timer_list *unused);
522 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc);
523 DEFINE_LED_TRIGGER(ledtrig_tx);
524
525 static void at76_ledtrig_tx_timerfunc(struct timer_list *unused)
526 {
527         static int tx_lastactivity;
528
529         if (tx_lastactivity != tx_activity) {
530                 tx_lastactivity = tx_activity;
531                 led_trigger_event(ledtrig_tx, LED_FULL);
532                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
533         } else
534                 led_trigger_event(ledtrig_tx, LED_OFF);
535 }
536
537 static void at76_ledtrig_tx_activity(void)
538 {
539         tx_activity++;
540         if (!timer_pending(&ledtrig_tx_timer))
541                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
542 }
543
544 static int at76_remap(struct usb_device *udev)
545 {
546         int ret;
547         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
548                               USB_TYPE_VENDOR | USB_DIR_OUT |
549                               USB_RECIP_INTERFACE, 0, 0, NULL, 0,
550                               USB_CTRL_GET_TIMEOUT);
551         if (ret < 0)
552                 return ret;
553         return 0;
554 }
555
556 static int at76_get_op_mode(struct usb_device *udev)
557 {
558         int ret;
559         u8 saved;
560         u8 *op_mode;
561
562         op_mode = kmalloc(1, GFP_NOIO);
563         if (!op_mode)
564                 return -ENOMEM;
565         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
566                               USB_TYPE_VENDOR | USB_DIR_IN |
567                               USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
568                               USB_CTRL_GET_TIMEOUT);
569         saved = *op_mode;
570         kfree(op_mode);
571
572         if (ret < 0)
573                 return ret;
574         else if (ret < 1)
575                 return -EIO;
576         else
577                 return saved;
578 }
579
580 /* Load a block of the second ("external") part of the firmware */
581 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
582                                          void *block, int size)
583 {
584         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
585                                USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
586                                0x0802, blockno, block, size,
587                                USB_CTRL_GET_TIMEOUT);
588 }
589
590 static inline int at76_get_hw_cfg(struct usb_device *udev,
591                                   union at76_hwcfg *buf, int buf_size)
592 {
593         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
594                                USB_TYPE_VENDOR | USB_DIR_IN |
595                                USB_RECIP_INTERFACE, 0x0a02, 0,
596                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
597 }
598
599 /* Intersil boards use a different "value" for GetHWConfig requests */
600 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
601                                            union at76_hwcfg *buf, int buf_size)
602 {
603         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
604                                USB_TYPE_VENDOR | USB_DIR_IN |
605                                USB_RECIP_INTERFACE, 0x0902, 0,
606                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
607 }
608
609 /* Get the hardware configuration for the adapter and put it to the appropriate
610  * fields of 'priv' (the GetHWConfig request and interpretation of the result
611  * depends on the board type) */
612 static int at76_get_hw_config(struct at76_priv *priv)
613 {
614         int ret;
615         union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
616
617         if (!hwcfg)
618                 return -ENOMEM;
619
620         if (at76_is_intersil(priv->board_type)) {
621                 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
622                                                sizeof(hwcfg->i));
623                 if (ret < 0)
624                         goto exit;
625                 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
626                 priv->regulatory_domain = hwcfg->i.regulatory_domain;
627         } else if (at76_is_503rfmd(priv->board_type)) {
628                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
629                 if (ret < 0)
630                         goto exit;
631                 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
632                 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
633         } else {
634                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
635                 if (ret < 0)
636                         goto exit;
637                 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
638                 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
639         }
640
641 exit:
642         kfree(hwcfg);
643         if (ret < 0)
644                 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",
645                           ret);
646
647         return ret;
648 }
649
650 static struct reg_domain const *at76_get_reg_domain(u16 code)
651 {
652         int i;
653         static struct reg_domain const fd_tab[] = {
654                 { 0x10, "FCC (USA)", 0x7ff },   /* ch 1-11 */
655                 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
656                 { 0x30, "ETSI (most of Europe)", 0x1fff },      /* ch 1-13 */
657                 { 0x31, "Spain", 0x600 },       /* ch 10-11 */
658                 { 0x32, "France", 0x1e00 },     /* ch 10-13 */
659                 { 0x40, "MKK (Japan)", 0x2000 },        /* ch 14 */
660                 { 0x41, "MKK1 (Japan)", 0x3fff },       /* ch 1-14 */
661                 { 0x50, "Israel", 0x3fc },      /* ch 3-9 */
662                 { 0x00, "<unknown>", 0xffffffff }       /* ch 1-32 */
663         };
664
665         /* Last entry is fallback for unknown domain code */
666         for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
667                 if (code == fd_tab[i].code)
668                         break;
669
670         return &fd_tab[i];
671 }
672
673 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
674                                int buf_size)
675 {
676         int ret;
677
678         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
679                               USB_TYPE_VENDOR | USB_DIR_IN |
680                               USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
681                               USB_CTRL_GET_TIMEOUT);
682         if (ret >= 0 && ret != buf_size)
683                 return -EIO;
684         return ret;
685 }
686
687 /* Return positive number for status, negative for an error */
688 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
689 {
690         u8 *stat_buf;
691         int ret;
692
693         stat_buf = kmalloc(40, GFP_NOIO);
694         if (!stat_buf)
695                 return -ENOMEM;
696
697         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
698                         USB_TYPE_VENDOR | USB_DIR_IN |
699                         USB_RECIP_INTERFACE, cmd, 0, stat_buf,
700                         40, USB_CTRL_GET_TIMEOUT);
701         if (ret >= 0)
702                 ret = stat_buf[5];
703         kfree(stat_buf);
704
705         return ret;
706 }
707
708 #define MAKE_CMD_CASE(c) case (c): return #c
709 static const char *at76_get_cmd_string(u8 cmd_status)
710 {
711         switch (cmd_status) {
712                 MAKE_CMD_CASE(CMD_SET_MIB);
713                 MAKE_CMD_CASE(CMD_GET_MIB);
714                 MAKE_CMD_CASE(CMD_SCAN);
715                 MAKE_CMD_CASE(CMD_JOIN);
716                 MAKE_CMD_CASE(CMD_START_IBSS);
717                 MAKE_CMD_CASE(CMD_RADIO_ON);
718                 MAKE_CMD_CASE(CMD_RADIO_OFF);
719                 MAKE_CMD_CASE(CMD_STARTUP);
720         }
721
722         return "UNKNOWN";
723 }
724
725 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
726                                  int buf_size)
727 {
728         int ret;
729         struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
730                                                buf_size, GFP_KERNEL);
731
732         if (!cmd_buf)
733                 return -ENOMEM;
734
735         cmd_buf->cmd = cmd;
736         cmd_buf->reserved = 0;
737         cmd_buf->size = cpu_to_le16(buf_size);
738         memcpy(cmd_buf->data, buf, buf_size);
739
740         at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
741                       "issuing command %s (0x%02x)",
742                       at76_get_cmd_string(cmd), cmd);
743
744         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
745                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
746                               0, 0, cmd_buf,
747                               sizeof(struct at76_command) + buf_size,
748                               USB_CTRL_GET_TIMEOUT);
749         kfree(cmd_buf);
750         return ret;
751 }
752
753 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
754 static const char *at76_get_cmd_status_string(u8 cmd_status)
755 {
756         switch (cmd_status) {
757                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
758                 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
759                 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
760                 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
761                 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
762                 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
763                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
764                 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
765                 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
766         }
767
768         return "UNKNOWN";
769 }
770
771 /* Wait until the command is completed */
772 static int at76_wait_completion(struct at76_priv *priv, int cmd)
773 {
774         int status = 0;
775         unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
776
777         do {
778                 status = at76_get_cmd_status(priv->udev, cmd);
779                 if (status < 0) {
780                         wiphy_err(priv->hw->wiphy,
781                                   "at76_get_cmd_status failed: %d\n",
782                                   status);
783                         break;
784                 }
785
786                 at76_dbg(DBG_WAIT_COMPLETE,
787                          "%s: Waiting on cmd %d, status = %d (%s)",
788                          wiphy_name(priv->hw->wiphy), cmd, status,
789                          at76_get_cmd_status_string(status));
790
791                 if (status != CMD_STATUS_IN_PROGRESS
792                     && status != CMD_STATUS_IDLE)
793                         break;
794
795                 schedule_timeout_interruptible(HZ / 10);        /* 100 ms */
796                 if (time_after(jiffies, timeout)) {
797                         wiphy_err(priv->hw->wiphy,
798                                   "completion timeout for command %d\n", cmd);
799                         status = -ETIMEDOUT;
800                         break;
801                 }
802         } while (1);
803
804         return status;
805 }
806
807 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
808 {
809         int ret;
810
811         ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
812                                     offsetof(struct set_mib_buffer,
813                                              data) + buf->size);
814         if (ret < 0)
815                 return ret;
816
817         ret = at76_wait_completion(priv, CMD_SET_MIB);
818         if (ret != CMD_STATUS_COMPLETE) {
819                 wiphy_info(priv->hw->wiphy,
820                            "set_mib: at76_wait_completion failed with %d\n",
821                            ret);
822                 ret = -EIO;
823         }
824
825         return ret;
826 }
827
828 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
829 static int at76_set_radio(struct at76_priv *priv, int enable)
830 {
831         int ret;
832         int cmd;
833
834         if (priv->radio_on == enable)
835                 return 0;
836
837         cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
838
839         ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
840         if (ret < 0)
841                 wiphy_err(priv->hw->wiphy,
842                           "at76_set_card_command(%d) failed: %d\n", cmd, ret);
843         else
844                 ret = 1;
845
846         priv->radio_on = enable;
847         return ret;
848 }
849
850 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
851 static int at76_set_pm_mode(struct at76_priv *priv)
852 {
853         int ret = 0;
854
855         priv->mib_buf.type = MIB_MAC_MGMT;
856         priv->mib_buf.size = 1;
857         priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
858         priv->mib_buf.data.byte = priv->pm_mode;
859
860         ret = at76_set_mib(priv, &priv->mib_buf);
861         if (ret < 0)
862                 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
863                           ret);
864
865         return ret;
866 }
867
868 static int at76_set_preamble(struct at76_priv *priv, u8 type)
869 {
870         int ret = 0;
871
872         priv->mib_buf.type = MIB_LOCAL;
873         priv->mib_buf.size = 1;
874         priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
875         priv->mib_buf.data.byte = type;
876
877         ret = at76_set_mib(priv, &priv->mib_buf);
878         if (ret < 0)
879                 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
880                           ret);
881
882         return ret;
883 }
884
885 static int at76_set_frag(struct at76_priv *priv, u16 size)
886 {
887         int ret = 0;
888
889         priv->mib_buf.type = MIB_MAC;
890         priv->mib_buf.size = 2;
891         priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
892         priv->mib_buf.data.word = cpu_to_le16(size);
893
894         ret = at76_set_mib(priv, &priv->mib_buf);
895         if (ret < 0)
896                 wiphy_err(priv->hw->wiphy,
897                           "set_mib (frag threshold) failed: %d\n", ret);
898
899         return ret;
900 }
901
902 static int at76_set_rts(struct at76_priv *priv, u16 size)
903 {
904         int ret = 0;
905
906         priv->mib_buf.type = MIB_MAC;
907         priv->mib_buf.size = 2;
908         priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
909         priv->mib_buf.data.word = cpu_to_le16(size);
910
911         ret = at76_set_mib(priv, &priv->mib_buf);
912         if (ret < 0)
913                 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
914
915         return ret;
916 }
917
918 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
919 {
920         int ret = 0;
921
922         priv->mib_buf.type = MIB_LOCAL;
923         priv->mib_buf.size = 1;
924         priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
925         priv->mib_buf.data.byte = onoff;
926
927         ret = at76_set_mib(priv, &priv->mib_buf);
928         if (ret < 0)
929                 wiphy_err(priv->hw->wiphy,
930                           "set_mib (autorate fallback) failed: %d\n", ret);
931
932         return ret;
933 }
934
935 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
936 {
937         int i;
938         int ret;
939         struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
940                                          GFP_KERNEL);
941
942         if (!m)
943                 return;
944
945         ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
946                            sizeof(struct mib_mac_addr));
947         if (ret < 0) {
948                 wiphy_err(priv->hw->wiphy,
949                           "at76_get_mib (MAC_ADDR) failed: %d\n", ret);
950                 goto exit;
951         }
952
953         at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
954                  wiphy_name(priv->hw->wiphy),
955                  m->mac_addr, m->res[0], m->res[1]);
956         for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
957                 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
958                          "status %d", wiphy_name(priv->hw->wiphy), i,
959                          m->group_addr[i], m->group_addr_status[i]);
960 exit:
961         kfree(m);
962 }
963
964 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
965 {
966         int i;
967         int ret;
968         int key_len;
969         struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
970
971         if (!m)
972                 return;
973
974         ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
975                            sizeof(struct mib_mac_wep));
976         if (ret < 0) {
977                 wiphy_err(priv->hw->wiphy,
978                           "at76_get_mib (MAC_WEP) failed: %d\n", ret);
979                 goto exit;
980         }
981
982         at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
983                  "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
984                  "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
985                  m->privacy_invoked, m->wep_default_key_id,
986                  m->wep_key_mapping_len, m->exclude_unencrypted,
987                  le32_to_cpu(m->wep_icv_error_count),
988                  le32_to_cpu(m->wep_excluded_count), m->encryption_level,
989                  m->wep_default_key_id);
990
991         key_len = (m->encryption_level == 1) ?
992             WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
993
994         for (i = 0; i < WEP_KEYS; i++)
995                 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD",
996                          wiphy_name(priv->hw->wiphy), i,
997                          key_len, m->wep_default_keyvalue[i]);
998 exit:
999         kfree(m);
1000 }
1001
1002 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1003 {
1004         int ret;
1005         struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1006                                          GFP_KERNEL);
1007
1008         if (!m)
1009                 return;
1010
1011         ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1012                            sizeof(struct mib_mac_mgmt));
1013         if (ret < 0) {
1014                 wiphy_err(priv->hw->wiphy,
1015                           "at76_get_mib (MAC_MGMT) failed: %d\n", ret);
1016                 goto exit;
1017         }
1018
1019         at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1020                  "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1021                  "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1022                  "current_bssid %pM current_essid %*phD current_bss_type %d "
1023                  "pm_mode %d ibss_change %d res %d "
1024                  "multi_domain_capability_implemented %d "
1025                  "international_roaming %d country_string %.3s",
1026                  wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1027                  le16_to_cpu(m->CFP_max_duration),
1028                  le16_to_cpu(m->medium_occupancy_limit),
1029                  le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1030                  m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1031                  m->CFP_period, m->current_bssid,
1032                  IW_ESSID_MAX_SIZE, m->current_essid,
1033                  m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1034                  m->res, m->multi_domain_capability_implemented,
1035                  m->multi_domain_capability_enabled, m->country_string);
1036 exit:
1037         kfree(m);
1038 }
1039
1040 static void at76_dump_mib_mac(struct at76_priv *priv)
1041 {
1042         int ret;
1043         struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1044
1045         if (!m)
1046                 return;
1047
1048         ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1049         if (ret < 0) {
1050                 wiphy_err(priv->hw->wiphy,
1051                           "at76_get_mib (MAC) failed: %d\n", ret);
1052                 goto exit;
1053         }
1054
1055         at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1056                  "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1057                  "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1058                  "scan_type %d scan_channel %d probe_delay %u "
1059                  "min_channel_time %d max_channel_time %d listen_int %d "
1060                  "desired_ssid %*phD desired_bssid %pM desired_bsstype %d",
1061                  wiphy_name(priv->hw->wiphy),
1062                  le32_to_cpu(m->max_tx_msdu_lifetime),
1063                  le32_to_cpu(m->max_rx_lifetime),
1064                  le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1065                  le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1066                  m->short_retry_time, m->long_retry_time, m->scan_type,
1067                  m->scan_channel, le16_to_cpu(m->probe_delay),
1068                  le16_to_cpu(m->min_channel_time),
1069                  le16_to_cpu(m->max_channel_time),
1070                  le16_to_cpu(m->listen_interval),
1071                  IW_ESSID_MAX_SIZE, m->desired_ssid,
1072                  m->desired_bssid, m->desired_bsstype);
1073 exit:
1074         kfree(m);
1075 }
1076
1077 static void at76_dump_mib_phy(struct at76_priv *priv)
1078 {
1079         int ret;
1080         struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1081
1082         if (!m)
1083                 return;
1084
1085         ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1086         if (ret < 0) {
1087                 wiphy_err(priv->hw->wiphy,
1088                           "at76_get_mib (PHY) failed: %d\n", ret);
1089                 goto exit;
1090         }
1091
1092         at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1093                  "sifs_time %d preamble_length %d plcp_header_length %d "
1094                  "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1095                  "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1096                  "phy_type %d current_reg_domain %d",
1097                  wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1098                  le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1099                  le16_to_cpu(m->preamble_length),
1100                  le16_to_cpu(m->plcp_header_length),
1101                  le16_to_cpu(m->mpdu_max_length),
1102                  le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1103                  m->operation_rate_set[1], m->operation_rate_set[2],
1104                  m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1105                  m->phy_type, m->current_reg_domain);
1106 exit:
1107         kfree(m);
1108 }
1109
1110 static void at76_dump_mib_local(struct at76_priv *priv)
1111 {
1112         int ret;
1113         struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL);
1114
1115         if (!m)
1116                 return;
1117
1118         ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m));
1119         if (ret < 0) {
1120                 wiphy_err(priv->hw->wiphy,
1121                           "at76_get_mib (LOCAL) failed: %d\n", ret);
1122                 goto exit;
1123         }
1124
1125         at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1126                  "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1127                  "preamble_type %d", wiphy_name(priv->hw->wiphy),
1128                  m->beacon_enable,
1129                  m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1130                  m->preamble_type);
1131 exit:
1132         kfree(m);
1133 }
1134
1135 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1136 {
1137         int ret;
1138         struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1139
1140         if (!m)
1141                 return;
1142
1143         ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1144                            sizeof(struct mib_mdomain));
1145         if (ret < 0) {
1146                 wiphy_err(priv->hw->wiphy,
1147                           "at76_get_mib (MDOMAIN) failed: %d\n", ret);
1148                 goto exit;
1149         }
1150
1151         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD",
1152                  wiphy_name(priv->hw->wiphy),
1153                  (int)sizeof(m->channel_list), m->channel_list);
1154
1155         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD",
1156                  wiphy_name(priv->hw->wiphy),
1157                  (int)sizeof(m->tx_powerlevel), m->tx_powerlevel);
1158 exit:
1159         kfree(m);
1160 }
1161
1162 /* Enable monitor mode */
1163 static int at76_start_monitor(struct at76_priv *priv)
1164 {
1165         struct at76_req_scan scan;
1166         int ret;
1167
1168         memset(&scan, 0, sizeof(struct at76_req_scan));
1169         eth_broadcast_addr(scan.bssid);
1170
1171         scan.channel = priv->channel;
1172         scan.scan_type = SCAN_TYPE_PASSIVE;
1173         scan.international_scan = 0;
1174         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1175         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1176         scan.probe_delay = cpu_to_le16(0);
1177
1178         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1179         if (ret >= 0)
1180                 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1181
1182         return ret;
1183 }
1184
1185 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1186    likely to compensate a flaw in the AT76C503A USB part ... */
1187 static inline int at76_calc_padding(int wlen)
1188 {
1189         /* add the USB TX header */
1190         wlen += AT76_TX_HDRLEN;
1191
1192         wlen = wlen % 64;
1193
1194         if (wlen < 50)
1195                 return 50 - wlen;
1196
1197         if (wlen >= 61)
1198                 return 64 + 50 - wlen;
1199
1200         return 0;
1201 }
1202
1203 static void at76_rx_callback(struct urb *urb)
1204 {
1205         struct at76_priv *priv = urb->context;
1206
1207         priv->rx_tasklet.data = (unsigned long)urb;
1208         tasklet_schedule(&priv->rx_tasklet);
1209 }
1210
1211 static int at76_submit_rx_urb(struct at76_priv *priv)
1212 {
1213         int ret;
1214         int size;
1215         struct sk_buff *skb = priv->rx_skb;
1216
1217         if (!priv->rx_urb) {
1218                 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n",
1219                           __func__);
1220                 return -EFAULT;
1221         }
1222
1223         if (!skb) {
1224                 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1225                 if (!skb) {
1226                         wiphy_err(priv->hw->wiphy,
1227                                   "cannot allocate rx skbuff\n");
1228                         ret = -ENOMEM;
1229                         goto exit;
1230                 }
1231                 priv->rx_skb = skb;
1232         } else {
1233                 skb_push(skb, skb_headroom(skb));
1234                 skb_trim(skb, 0);
1235         }
1236
1237         size = skb_tailroom(skb);
1238         usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1239                           skb_put(skb, size), size, at76_rx_callback, priv);
1240         ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1241         if (ret < 0) {
1242                 if (ret == -ENODEV)
1243                         at76_dbg(DBG_DEVSTART,
1244                                  "usb_submit_urb returned -ENODEV");
1245                 else
1246                         wiphy_err(priv->hw->wiphy,
1247                                   "rx, usb_submit_urb failed: %d\n", ret);
1248         }
1249
1250 exit:
1251         if (ret < 0 && ret != -ENODEV)
1252                 wiphy_err(priv->hw->wiphy,
1253                           "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1254
1255         return ret;
1256 }
1257
1258 /* Download external firmware */
1259 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1260 {
1261         int ret;
1262         int op_mode;
1263         int blockno = 0;
1264         int bsize;
1265         u8 *block;
1266         u8 *buf = fwe->extfw;
1267         int size = fwe->extfw_size;
1268
1269         if (!buf || !size)
1270                 return -ENOENT;
1271
1272         op_mode = at76_get_op_mode(udev);
1273         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1274
1275         if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1276                 dev_err(&udev->dev, "unexpected opmode %d\n", op_mode);
1277                 return -EINVAL;
1278         }
1279
1280         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1281         if (!block)
1282                 return -ENOMEM;
1283
1284         at76_dbg(DBG_DEVSTART, "downloading external firmware");
1285
1286         /* for fw >= 0.100, the device needs an extra empty block */
1287         do {
1288                 bsize = min_t(int, size, FW_BLOCK_SIZE);
1289                 memcpy(block, buf, bsize);
1290                 at76_dbg(DBG_DEVSTART,
1291                          "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1292                          size, bsize, blockno);
1293                 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1294                 if (ret != bsize) {
1295                         dev_err(&udev->dev,
1296                                 "loading %dth firmware block failed: %d\n",
1297                                 blockno, ret);
1298                         ret = -EIO;
1299                         goto exit;
1300                 }
1301                 buf += bsize;
1302                 size -= bsize;
1303                 blockno++;
1304         } while (bsize > 0);
1305
1306         if (at76_is_505a(fwe->board_type)) {
1307                 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1308                 schedule_timeout_interruptible(HZ / 5 + 1);
1309         }
1310
1311 exit:
1312         kfree(block);
1313         if (ret < 0)
1314                 dev_err(&udev->dev,
1315                         "downloading external firmware failed: %d\n", ret);
1316         return ret;
1317 }
1318
1319 /* Download internal firmware */
1320 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1321 {
1322         int ret;
1323         int need_remap = !at76_is_505a(fwe->board_type);
1324
1325         ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1326                                    need_remap ? 0 : 2 * HZ);
1327
1328         if (ret < 0) {
1329                 dev_err(&udev->dev,
1330                         "downloading internal fw failed with %d\n", ret);
1331                 goto exit;
1332         }
1333
1334         at76_dbg(DBG_DEVSTART, "sending REMAP");
1335
1336         /* no REMAP for 505A (see SF driver) */
1337         if (need_remap) {
1338                 ret = at76_remap(udev);
1339                 if (ret < 0) {
1340                         dev_err(&udev->dev,
1341                                 "sending REMAP failed with %d\n", ret);
1342                         goto exit;
1343                 }
1344         }
1345
1346         at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1347         schedule_timeout_interruptible(2 * HZ + 1);
1348         usb_reset_device(udev);
1349
1350 exit:
1351         return ret;
1352 }
1353
1354 static int at76_startup_device(struct at76_priv *priv)
1355 {
1356         struct at76_card_config *ccfg = &priv->card_config;
1357         int ret;
1358
1359         at76_dbg(DBG_PARAMS,
1360                  "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d "
1361                  "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1362                  priv->essid, IW_ESSID_MAX_SIZE, priv->essid,
1363                  priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1364                  priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1365                  priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1366         at76_dbg(DBG_PARAMS,
1367                  "%s param: preamble %s rts %d retry %d frag %d "
1368                  "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1369                  preambles[priv->preamble_type], priv->rts_threshold,
1370                  priv->short_retry_limit, priv->frag_threshold,
1371                  priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1372                  TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1373                  TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1374                  TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1375                  TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1376         at76_dbg(DBG_PARAMS,
1377                  "%s param: pm_mode %d pm_period %d auth_mode %s "
1378                  "scan_times %d %d scan_mode %s",
1379                  wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1380                  priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1381                  priv->scan_min_time, priv->scan_max_time,
1382                  priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1383
1384         memset(ccfg, 0, sizeof(struct at76_card_config));
1385         ccfg->promiscuous_mode = 0;
1386         ccfg->short_retry_limit = priv->short_retry_limit;
1387
1388         if (priv->wep_enabled) {
1389                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1390                         ccfg->encryption_type = 2;
1391                 else
1392                         ccfg->encryption_type = 1;
1393
1394                 /* jal: always exclude unencrypted if WEP is active */
1395                 ccfg->exclude_unencrypted = 1;
1396         } else {
1397                 ccfg->exclude_unencrypted = 0;
1398                 ccfg->encryption_type = 0;
1399         }
1400
1401         ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1402         ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1403
1404         memcpy(ccfg->basic_rate_set, hw_rates, 4);
1405         /* jal: really needed, we do a set_mib for autorate later ??? */
1406         ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1407         ccfg->channel = priv->channel;
1408         ccfg->privacy_invoked = priv->wep_enabled;
1409         memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1410         ccfg->ssid_len = priv->essid_size;
1411
1412         ccfg->wep_default_key_id = priv->wep_key_id;
1413         memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1414                sizeof(priv->wep_keys));
1415
1416         ccfg->short_preamble = priv->preamble_type;
1417         ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1418
1419         ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1420                                     sizeof(struct at76_card_config));
1421         if (ret < 0) {
1422                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1423                           ret);
1424                 return ret;
1425         }
1426
1427         at76_wait_completion(priv, CMD_STARTUP);
1428
1429         /* remove BSSID from previous run */
1430         eth_zero_addr(priv->bssid);
1431
1432         priv->scanning = false;
1433
1434         if (at76_set_radio(priv, 1) == 1)
1435                 at76_wait_completion(priv, CMD_RADIO_ON);
1436
1437         ret = at76_set_preamble(priv, priv->preamble_type);
1438         if (ret < 0)
1439                 return ret;
1440
1441         ret = at76_set_frag(priv, priv->frag_threshold);
1442         if (ret < 0)
1443                 return ret;
1444
1445         ret = at76_set_rts(priv, priv->rts_threshold);
1446         if (ret < 0)
1447                 return ret;
1448
1449         ret = at76_set_autorate_fallback(priv,
1450                                          priv->txrate == TX_RATE_AUTO ? 1 : 0);
1451         if (ret < 0)
1452                 return ret;
1453
1454         ret = at76_set_pm_mode(priv);
1455         if (ret < 0)
1456                 return ret;
1457
1458         if (at76_debug & DBG_MIB) {
1459                 at76_dump_mib_mac(priv);
1460                 at76_dump_mib_mac_addr(priv);
1461                 at76_dump_mib_mac_mgmt(priv);
1462                 at76_dump_mib_mac_wep(priv);
1463                 at76_dump_mib_mdomain(priv);
1464                 at76_dump_mib_phy(priv);
1465                 at76_dump_mib_local(priv);
1466         }
1467
1468         return 0;
1469 }
1470
1471 /* Enable or disable promiscuous mode */
1472 static void at76_work_set_promisc(struct work_struct *work)
1473 {
1474         struct at76_priv *priv = container_of(work, struct at76_priv,
1475                                               work_set_promisc);
1476         int ret = 0;
1477
1478         if (priv->device_unplugged)
1479                 return;
1480
1481         mutex_lock(&priv->mtx);
1482
1483         priv->mib_buf.type = MIB_LOCAL;
1484         priv->mib_buf.size = 1;
1485         priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1486         priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1487
1488         ret = at76_set_mib(priv, &priv->mib_buf);
1489         if (ret < 0)
1490                 wiphy_err(priv->hw->wiphy,
1491                           "set_mib (promiscuous_mode) failed: %d\n", ret);
1492
1493         mutex_unlock(&priv->mtx);
1494 }
1495
1496 /* Submit Rx urb back to the device */
1497 static void at76_work_submit_rx(struct work_struct *work)
1498 {
1499         struct at76_priv *priv = container_of(work, struct at76_priv,
1500                                               work_submit_rx);
1501
1502         mutex_lock(&priv->mtx);
1503         at76_submit_rx_urb(priv);
1504         mutex_unlock(&priv->mtx);
1505 }
1506
1507 /* This is a workaround to make scan working:
1508  * currently mac80211 does not process frames with no frequency
1509  * information.
1510  * However during scan the HW performs a sweep by itself, and we
1511  * are unable to know where the radio is actually tuned.
1512  * This function tries to do its best to guess this information..
1513  * During scan, If the current frame is a beacon or a probe response,
1514  * the channel information is extracted from it.
1515  * When not scanning, for other frames, or if it happens that for
1516  * whatever reason we fail to parse beacons and probe responses, this
1517  * function returns the priv->channel information, that should be correct
1518  * at least when we are not scanning.
1519  */
1520 static inline int at76_guess_freq(struct at76_priv *priv)
1521 {
1522         size_t el_off;
1523         const u8 *el;
1524         int channel = priv->channel;
1525         int len = priv->rx_skb->len;
1526         struct ieee80211_hdr *hdr = (void *)priv->rx_skb->data;
1527
1528         if (!priv->scanning)
1529                 goto exit;
1530
1531         if (len < 24)
1532                 goto exit;
1533
1534         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1535                 el_off = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1536                 el = ((struct ieee80211_mgmt *)hdr)->u.probe_resp.variable;
1537         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1538                 el_off = offsetof(struct ieee80211_mgmt, u.beacon.variable);
1539                 el = ((struct ieee80211_mgmt *)hdr)->u.beacon.variable;
1540         } else {
1541                 goto exit;
1542         }
1543         len -= el_off;
1544
1545         el = cfg80211_find_ie(WLAN_EID_DS_PARAMS, el, len);
1546         if (el && el[1] > 0)
1547                 channel = el[2];
1548
1549 exit:
1550         return ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1551 }
1552
1553 static void at76_rx_tasklet(unsigned long param)
1554 {
1555         struct urb *urb = (struct urb *)param;
1556         struct at76_priv *priv = urb->context;
1557         struct at76_rx_buffer *buf;
1558         struct ieee80211_rx_status rx_status = { 0 };
1559
1560         if (priv->device_unplugged) {
1561                 at76_dbg(DBG_DEVSTART, "device unplugged");
1562                 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1563                 return;
1564         }
1565
1566         if (!priv->rx_skb || !priv->rx_skb->data)
1567                 return;
1568
1569         buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1570
1571         if (urb->status != 0) {
1572                 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1573                         at76_dbg(DBG_URB,
1574                                  "%s %s: - nonzero Rx bulk status received: %d",
1575                                  __func__, wiphy_name(priv->hw->wiphy),
1576                                  urb->status);
1577                 return;
1578         }
1579
1580         at76_dbg(DBG_RX_ATMEL_HDR,
1581                  "%s: rx frame: rate %d rssi %d noise %d link %d",
1582                  wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1583                  buf->noise_level, buf->link_quality);
1584
1585         skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1586         skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1587         at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1588                       priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1589
1590         rx_status.signal = buf->rssi;
1591         rx_status.flag |= RX_FLAG_DECRYPTED;
1592         rx_status.flag |= RX_FLAG_IV_STRIPPED;
1593         rx_status.band = NL80211_BAND_2GHZ;
1594         rx_status.freq = at76_guess_freq(priv);
1595
1596         at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1597                  priv->rx_skb->len, priv->rx_skb->data_len);
1598         memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1599         ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1600
1601         /* Use a new skb for the next receive */
1602         priv->rx_skb = NULL;
1603
1604         at76_submit_rx_urb(priv);
1605 }
1606
1607 /* Load firmware into kernel memory and parse it */
1608 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1609                                           enum board_type board_type)
1610 {
1611         int ret;
1612         char *str;
1613         struct at76_fw_header *fwh;
1614         struct fwentry *fwe = &firmwares[board_type];
1615
1616         mutex_lock(&fw_mutex);
1617
1618         if (fwe->loaded) {
1619                 at76_dbg(DBG_FW, "re-using previously loaded fw");
1620                 goto exit;
1621         }
1622
1623         at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1624         ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1625         if (ret < 0) {
1626                 dev_err(&udev->dev, "firmware %s not found!\n",
1627                         fwe->fwname);
1628                 dev_err(&udev->dev,
1629                         "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n");
1630                 goto exit;
1631         }
1632
1633         at76_dbg(DBG_FW, "got it.");
1634         fwh = (struct at76_fw_header *)(fwe->fw->data);
1635
1636         if (fwe->fw->size <= sizeof(*fwh)) {
1637                 dev_err(&udev->dev,
1638                         "firmware is too short (0x%zx)\n", fwe->fw->size);
1639                 goto exit;
1640         }
1641
1642         /* CRC currently not checked */
1643         fwe->board_type = le32_to_cpu(fwh->board_type);
1644         if (fwe->board_type != board_type) {
1645                 dev_err(&udev->dev,
1646                         "board type mismatch, requested %u, got %u\n",
1647                         board_type, fwe->board_type);
1648                 goto exit;
1649         }
1650
1651         fwe->fw_version.major = fwh->major;
1652         fwe->fw_version.minor = fwh->minor;
1653         fwe->fw_version.patch = fwh->patch;
1654         fwe->fw_version.build = fwh->build;
1655
1656         str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1657         fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1658         fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1659         fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1660         fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1661
1662         fwe->loaded = 1;
1663
1664         dev_printk(KERN_DEBUG, &udev->dev,
1665                    "using firmware %s (version %d.%d.%d-%d)\n",
1666                    fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1667
1668         at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1669                  le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1670                  le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1671         at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1672
1673 exit:
1674         mutex_unlock(&fw_mutex);
1675
1676         if (fwe->loaded)
1677                 return fwe;
1678         else
1679                 return NULL;
1680 }
1681
1682 static int at76_join(struct at76_priv *priv)
1683 {
1684         struct at76_req_join join;
1685         int ret;
1686
1687         memset(&join, 0, sizeof(struct at76_req_join));
1688         memcpy(join.essid, priv->essid, priv->essid_size);
1689         join.essid_size = priv->essid_size;
1690         memcpy(join.bssid, priv->bssid, ETH_ALEN);
1691         join.bss_type = INFRASTRUCTURE_MODE;
1692         join.channel = priv->channel;
1693         join.timeout = cpu_to_le16(2000);
1694
1695         at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1696         ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1697                                     sizeof(struct at76_req_join));
1698
1699         if (ret < 0) {
1700                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1701                           ret);
1702                 return 0;
1703         }
1704
1705         ret = at76_wait_completion(priv, CMD_JOIN);
1706         at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1707         if (ret != CMD_STATUS_COMPLETE) {
1708                 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1709                           ret);
1710                 return 0;
1711         }
1712
1713         at76_set_pm_mode(priv);
1714
1715         return 0;
1716 }
1717
1718 static void at76_work_join_bssid(struct work_struct *work)
1719 {
1720         struct at76_priv *priv = container_of(work, struct at76_priv,
1721                                               work_join_bssid);
1722
1723         if (priv->device_unplugged)
1724                 return;
1725
1726         mutex_lock(&priv->mtx);
1727
1728         if (is_valid_ether_addr(priv->bssid))
1729                 at76_join(priv);
1730
1731         mutex_unlock(&priv->mtx);
1732 }
1733
1734 static void at76_mac80211_tx_callback(struct urb *urb)
1735 {
1736         struct at76_priv *priv = urb->context;
1737         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1738
1739         at76_dbg(DBG_MAC80211, "%s()", __func__);
1740
1741         switch (urb->status) {
1742         case 0:
1743                 /* success */
1744                 info->flags |= IEEE80211_TX_STAT_ACK;
1745                 break;
1746         case -ENOENT:
1747         case -ECONNRESET:
1748                 /* fail, urb has been unlinked */
1749                 /* FIXME: add error message */
1750                 break;
1751         default:
1752                 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1753                          __func__, urb->status);
1754                 break;
1755         }
1756
1757         memset(&info->status, 0, sizeof(info->status));
1758
1759         ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1760
1761         priv->tx_skb = NULL;
1762
1763         ieee80211_wake_queues(priv->hw);
1764 }
1765
1766 static void at76_mac80211_tx(struct ieee80211_hw *hw,
1767                              struct ieee80211_tx_control *control,
1768                              struct sk_buff *skb)
1769 {
1770         struct at76_priv *priv = hw->priv;
1771         struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1772         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1773         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1774         int padding, submit_len, ret;
1775
1776         at76_dbg(DBG_MAC80211, "%s()", __func__);
1777
1778         if (priv->tx_urb->status == -EINPROGRESS) {
1779                 wiphy_err(priv->hw->wiphy,
1780                           "%s called while tx urb is pending\n", __func__);
1781                 dev_kfree_skb_any(skb);
1782                 return;
1783         }
1784
1785         /* The following code lines are important when the device is going to
1786          * authenticate with a new bssid. The driver must send CMD_JOIN before
1787          * an authentication frame is transmitted. For this to succeed, the
1788          * correct bssid of the AP must be known. As mac80211 does not inform
1789          * drivers about the bssid prior to the authentication process the
1790          * following workaround is necessary. If the TX frame is an
1791          * authentication frame extract the bssid and send the CMD_JOIN. */
1792         if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1793                 if (!ether_addr_equal_64bits(priv->bssid, mgmt->bssid)) {
1794                         memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1795                         ieee80211_queue_work(hw, &priv->work_join_bssid);
1796                         dev_kfree_skb_any(skb);
1797                         return;
1798                 }
1799         }
1800
1801         ieee80211_stop_queues(hw);
1802
1803         at76_ledtrig_tx_activity();     /* tell ledtrigger we send a packet */
1804
1805         WARN_ON(priv->tx_skb != NULL);
1806
1807         priv->tx_skb = skb;
1808         padding = at76_calc_padding(skb->len);
1809         submit_len = AT76_TX_HDRLEN + skb->len + padding;
1810
1811         /* setup 'Atmel' header */
1812         memset(tx_buffer, 0, sizeof(*tx_buffer));
1813         tx_buffer->padding = padding;
1814         tx_buffer->wlength = cpu_to_le16(skb->len);
1815         tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1816         memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1817         memcpy(tx_buffer->packet, skb->data, skb->len);
1818
1819         at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1820                  wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1821                  tx_buffer->padding, tx_buffer->tx_rate);
1822
1823         /* send stuff */
1824         at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1825                       "%s(): tx_buffer %d bytes:", __func__, submit_len);
1826         usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1827                           submit_len, at76_mac80211_tx_callback, priv);
1828         ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1829         if (ret) {
1830                 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1831                 if (ret == -EINVAL)
1832                         wiphy_err(priv->hw->wiphy,
1833                                   "-EINVAL: tx urb %p hcpriv %p complete %p\n",
1834                                   priv->tx_urb,
1835                                   priv->tx_urb->hcpriv, priv->tx_urb->complete);
1836         }
1837 }
1838
1839 static int at76_mac80211_start(struct ieee80211_hw *hw)
1840 {
1841         struct at76_priv *priv = hw->priv;
1842         int ret;
1843
1844         at76_dbg(DBG_MAC80211, "%s()", __func__);
1845
1846         mutex_lock(&priv->mtx);
1847
1848         ret = at76_submit_rx_urb(priv);
1849         if (ret < 0) {
1850                 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1851                           ret);
1852                 goto error;
1853         }
1854
1855         at76_startup_device(priv);
1856
1857         at76_start_monitor(priv);
1858
1859 error:
1860         mutex_unlock(&priv->mtx);
1861
1862         return 0;
1863 }
1864
1865 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1866 {
1867         struct at76_priv *priv = hw->priv;
1868
1869         at76_dbg(DBG_MAC80211, "%s()", __func__);
1870
1871         cancel_delayed_work(&priv->dwork_hw_scan);
1872         cancel_work_sync(&priv->work_join_bssid);
1873         cancel_work_sync(&priv->work_set_promisc);
1874
1875         mutex_lock(&priv->mtx);
1876
1877         if (!priv->device_unplugged) {
1878                 /* We are called by "ifconfig ethX down", not because the
1879                  * device is not available anymore. */
1880                 at76_set_radio(priv, 0);
1881
1882                 /* We unlink rx_urb because at76_open() re-submits it.
1883                  * If unplugged, at76_delete_device() takes care of it. */
1884                 usb_kill_urb(priv->rx_urb);
1885         }
1886
1887         mutex_unlock(&priv->mtx);
1888 }
1889
1890 static int at76_add_interface(struct ieee80211_hw *hw,
1891                               struct ieee80211_vif *vif)
1892 {
1893         struct at76_priv *priv = hw->priv;
1894         int ret = 0;
1895
1896         at76_dbg(DBG_MAC80211, "%s()", __func__);
1897
1898         mutex_lock(&priv->mtx);
1899
1900         switch (vif->type) {
1901         case NL80211_IFTYPE_STATION:
1902                 priv->iw_mode = IW_MODE_INFRA;
1903                 break;
1904         default:
1905                 ret = -EOPNOTSUPP;
1906                 goto exit;
1907         }
1908
1909 exit:
1910         mutex_unlock(&priv->mtx);
1911
1912         return ret;
1913 }
1914
1915 static void at76_remove_interface(struct ieee80211_hw *hw,
1916                                   struct ieee80211_vif *vif)
1917 {
1918         at76_dbg(DBG_MAC80211, "%s()", __func__);
1919 }
1920
1921 static void at76_dwork_hw_scan(struct work_struct *work)
1922 {
1923         struct at76_priv *priv = container_of(work, struct at76_priv,
1924                                               dwork_hw_scan.work);
1925         struct cfg80211_scan_info info = {
1926                 .aborted = false,
1927         };
1928         int ret;
1929
1930         if (priv->device_unplugged)
1931                 return;
1932
1933         mutex_lock(&priv->mtx);
1934
1935         ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1936         at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1937
1938         /* FIXME: add maximum time for scan to complete */
1939
1940         if (ret != CMD_STATUS_COMPLETE) {
1941                 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1942                                              SCAN_POLL_INTERVAL);
1943                 mutex_unlock(&priv->mtx);
1944                 return;
1945         }
1946
1947         if (is_valid_ether_addr(priv->bssid))
1948                 at76_join(priv);
1949
1950         priv->scanning = false;
1951
1952         mutex_unlock(&priv->mtx);
1953
1954         ieee80211_scan_completed(priv->hw, &info);
1955
1956         ieee80211_wake_queues(priv->hw);
1957 }
1958
1959 static int at76_hw_scan(struct ieee80211_hw *hw,
1960                         struct ieee80211_vif *vif,
1961                         struct ieee80211_scan_request *hw_req)
1962 {
1963         struct cfg80211_scan_request *req = &hw_req->req;
1964         struct at76_priv *priv = hw->priv;
1965         struct at76_req_scan scan;
1966         u8 *ssid = NULL;
1967         int ret, len = 0;
1968
1969         at76_dbg(DBG_MAC80211, "%s():", __func__);
1970
1971         if (priv->device_unplugged)
1972                 return 0;
1973
1974         mutex_lock(&priv->mtx);
1975
1976         ieee80211_stop_queues(hw);
1977
1978         memset(&scan, 0, sizeof(struct at76_req_scan));
1979         eth_broadcast_addr(scan.bssid);
1980
1981         if (req->n_ssids) {
1982                 scan.scan_type = SCAN_TYPE_ACTIVE;
1983                 ssid = req->ssids[0].ssid;
1984                 len = req->ssids[0].ssid_len;
1985         } else {
1986                 scan.scan_type = SCAN_TYPE_PASSIVE;
1987         }
1988
1989         if (len) {
1990                 memcpy(scan.essid, ssid, len);
1991                 scan.essid_size = len;
1992         }
1993
1994         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1995         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1996         scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1997         scan.international_scan = 0;
1998
1999         at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
2000         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
2001
2002         if (ret < 0) {
2003                 wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret);
2004                 goto exit;
2005         }
2006
2007         priv->scanning = true;
2008         ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
2009                                      SCAN_POLL_INTERVAL);
2010
2011 exit:
2012         mutex_unlock(&priv->mtx);
2013
2014         return 0;
2015 }
2016
2017 static int at76_config(struct ieee80211_hw *hw, u32 changed)
2018 {
2019         struct at76_priv *priv = hw->priv;
2020
2021         at76_dbg(DBG_MAC80211, "%s(): channel %d",
2022                  __func__, hw->conf.chandef.chan->hw_value);
2023         at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
2024
2025         mutex_lock(&priv->mtx);
2026
2027         priv->channel = hw->conf.chandef.chan->hw_value;
2028
2029         if (is_valid_ether_addr(priv->bssid))
2030                 at76_join(priv);
2031         else
2032                 at76_start_monitor(priv);
2033
2034         mutex_unlock(&priv->mtx);
2035
2036         return 0;
2037 }
2038
2039 static void at76_bss_info_changed(struct ieee80211_hw *hw,
2040                                   struct ieee80211_vif *vif,
2041                                   struct ieee80211_bss_conf *conf,
2042                                   u32 changed)
2043 {
2044         struct at76_priv *priv = hw->priv;
2045
2046         at76_dbg(DBG_MAC80211, "%s():", __func__);
2047
2048         if (!(changed & BSS_CHANGED_BSSID))
2049                 return;
2050
2051         at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2052
2053         mutex_lock(&priv->mtx);
2054
2055         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2056
2057         if (is_valid_ether_addr(priv->bssid))
2058                 /* mac80211 is joining a bss */
2059                 at76_join(priv);
2060
2061         mutex_unlock(&priv->mtx);
2062 }
2063
2064 /* must be atomic */
2065 static void at76_configure_filter(struct ieee80211_hw *hw,
2066                                   unsigned int changed_flags,
2067                                   unsigned int *total_flags, u64 multicast)
2068 {
2069         struct at76_priv *priv = hw->priv;
2070         int flags;
2071
2072         at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2073                  "total_flags=0x%08x",
2074                  __func__, changed_flags, *total_flags);
2075
2076         flags = changed_flags & AT76_SUPPORTED_FILTERS;
2077         *total_flags = AT76_SUPPORTED_FILTERS;
2078
2079         /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2080         if (priv->device_unplugged)
2081                 return;
2082
2083         /* FIXME: access to priv->promisc should be protected with
2084          * priv->mtx, but it's impossible because this function needs to be
2085          * atomic */
2086
2087         if (flags && !priv->promisc) {
2088                 /* mac80211 wants us to enable promiscuous mode */
2089                 priv->promisc = 1;
2090         } else if (!flags && priv->promisc) {
2091                 /* we need to disable promiscuous mode */
2092                 priv->promisc = 0;
2093         } else
2094                 return;
2095
2096         ieee80211_queue_work(hw, &priv->work_set_promisc);
2097 }
2098
2099 static int at76_set_wep(struct at76_priv *priv)
2100 {
2101         int ret = 0;
2102         struct mib_mac_wep *mib_data = &priv->mib_buf.data.wep_mib;
2103
2104         priv->mib_buf.type = MIB_MAC_WEP;
2105         priv->mib_buf.size = sizeof(struct mib_mac_wep);
2106         priv->mib_buf.index = 0;
2107
2108         memset(mib_data, 0, sizeof(*mib_data));
2109
2110         if (priv->wep_enabled) {
2111                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
2112                         mib_data->encryption_level = 2;
2113                 else
2114                         mib_data->encryption_level = 1;
2115
2116                 /* always exclude unencrypted if WEP is active */
2117                 mib_data->exclude_unencrypted = 1;
2118         } else {
2119                 mib_data->exclude_unencrypted = 0;
2120                 mib_data->encryption_level = 0;
2121         }
2122
2123         mib_data->privacy_invoked = priv->wep_enabled;
2124         mib_data->wep_default_key_id = priv->wep_key_id;
2125         memcpy(mib_data->wep_default_keyvalue, priv->wep_keys,
2126                sizeof(priv->wep_keys));
2127
2128         ret = at76_set_mib(priv, &priv->mib_buf);
2129
2130         if (ret < 0)
2131                 wiphy_err(priv->hw->wiphy,
2132                           "set_mib (wep) failed: %d\n", ret);
2133
2134         return ret;
2135 }
2136
2137 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2138                         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2139                         struct ieee80211_key_conf *key)
2140 {
2141         struct at76_priv *priv = hw->priv;
2142
2143         int i;
2144
2145         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d "
2146                  "key->keylen %d",
2147                  __func__, cmd, key->cipher, key->keyidx, key->keylen);
2148
2149         if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) &&
2150             (key->cipher != WLAN_CIPHER_SUITE_WEP104))
2151                 return -EOPNOTSUPP;
2152
2153         key->hw_key_idx = key->keyidx;
2154
2155         mutex_lock(&priv->mtx);
2156
2157         switch (cmd) {
2158         case SET_KEY:
2159                 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2160                 priv->wep_keys_len[key->keyidx] = key->keylen;
2161
2162                 /* FIXME: find out how to do this properly */
2163                 priv->wep_key_id = key->keyidx;
2164
2165                 break;
2166         case DISABLE_KEY:
2167         default:
2168                 priv->wep_keys_len[key->keyidx] = 0;
2169                 break;
2170         }
2171
2172         priv->wep_enabled = 0;
2173
2174         for (i = 0; i < WEP_KEYS; i++) {
2175                 if (priv->wep_keys_len[i] != 0)
2176                         priv->wep_enabled = 1;
2177         }
2178
2179         at76_set_wep(priv);
2180
2181         mutex_unlock(&priv->mtx);
2182
2183         return 0;
2184 }
2185
2186 static const struct ieee80211_ops at76_ops = {
2187         .tx = at76_mac80211_tx,
2188         .add_interface = at76_add_interface,
2189         .remove_interface = at76_remove_interface,
2190         .config = at76_config,
2191         .bss_info_changed = at76_bss_info_changed,
2192         .configure_filter = at76_configure_filter,
2193         .start = at76_mac80211_start,
2194         .stop = at76_mac80211_stop,
2195         .hw_scan = at76_hw_scan,
2196         .set_key = at76_set_key,
2197 };
2198
2199 /* Allocate network device and initialize private data */
2200 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2201 {
2202         struct ieee80211_hw *hw;
2203         struct at76_priv *priv;
2204
2205         hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2206         if (!hw) {
2207                 printk(KERN_ERR DRIVER_NAME ": could not register"
2208                        " ieee80211_hw\n");
2209                 return NULL;
2210         }
2211
2212         priv = hw->priv;
2213         priv->hw = hw;
2214
2215         priv->udev = udev;
2216
2217         mutex_init(&priv->mtx);
2218         INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2219         INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2220         INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2221         INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2222
2223         tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2224
2225         priv->pm_mode = AT76_PM_OFF;
2226         priv->pm_period = 0;
2227
2228         /* unit us */
2229
2230         return priv;
2231 }
2232
2233 static int at76_alloc_urbs(struct at76_priv *priv,
2234                            struct usb_interface *interface)
2235 {
2236         struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2237         int i;
2238         int buffer_size;
2239         struct usb_host_interface *iface_desc;
2240
2241         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2242
2243         at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2244                  interface->altsetting[0].desc.bNumEndpoints);
2245
2246         ep_in = NULL;
2247         ep_out = NULL;
2248         iface_desc = interface->cur_altsetting;
2249         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2250                 endpoint = &iface_desc->endpoint[i].desc;
2251
2252                 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2253                          __func__, i, endpoint->bEndpointAddress,
2254                          endpoint->bmAttributes);
2255
2256                 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2257                         ep_in = endpoint;
2258
2259                 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2260                         ep_out = endpoint;
2261         }
2262
2263         if (!ep_in || !ep_out) {
2264                 dev_err(&interface->dev, "bulk endpoints missing\n");
2265                 return -ENXIO;
2266         }
2267
2268         priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2269         priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2270
2271         priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2272         priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2273         if (!priv->rx_urb || !priv->tx_urb) {
2274                 dev_err(&interface->dev, "cannot allocate URB\n");
2275                 return -ENOMEM;
2276         }
2277
2278         buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2279         priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2280         if (!priv->bulk_out_buffer)
2281                 return -ENOMEM;
2282
2283         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2284
2285         return 0;
2286 }
2287
2288 static struct ieee80211_rate at76_rates[] = {
2289         { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2290         { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2291         { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2292         { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2293 };
2294
2295 static struct ieee80211_channel at76_channels[] = {
2296         { .center_freq = 2412, .hw_value = 1 },
2297         { .center_freq = 2417, .hw_value = 2 },
2298         { .center_freq = 2422, .hw_value = 3 },
2299         { .center_freq = 2427, .hw_value = 4 },
2300         { .center_freq = 2432, .hw_value = 5 },
2301         { .center_freq = 2437, .hw_value = 6 },
2302         { .center_freq = 2442, .hw_value = 7 },
2303         { .center_freq = 2447, .hw_value = 8 },
2304         { .center_freq = 2452, .hw_value = 9 },
2305         { .center_freq = 2457, .hw_value = 10 },
2306         { .center_freq = 2462, .hw_value = 11 },
2307         { .center_freq = 2467, .hw_value = 12 },
2308         { .center_freq = 2472, .hw_value = 13 },
2309         { .center_freq = 2484, .hw_value = 14 }
2310 };
2311
2312 static struct ieee80211_supported_band at76_supported_band = {
2313         .channels = at76_channels,
2314         .n_channels = ARRAY_SIZE(at76_channels),
2315         .bitrates = at76_rates,
2316         .n_bitrates = ARRAY_SIZE(at76_rates),
2317 };
2318
2319 /* Register network device and initialize the hardware */
2320 static int at76_init_new_device(struct at76_priv *priv,
2321                                 struct usb_interface *interface)
2322 {
2323         struct wiphy *wiphy;
2324         size_t len;
2325         int ret;
2326
2327         /* set up the endpoint information */
2328         /* check out the endpoints */
2329
2330         at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2331                  interface->cur_altsetting->desc.bNumEndpoints);
2332
2333         ret = at76_alloc_urbs(priv, interface);
2334         if (ret < 0)
2335                 goto exit;
2336
2337         /* MAC address */
2338         ret = at76_get_hw_config(priv);
2339         if (ret < 0) {
2340                 dev_err(&interface->dev, "cannot get MAC address\n");
2341                 goto exit;
2342         }
2343
2344         priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2345
2346         priv->channel = DEF_CHANNEL;
2347         priv->iw_mode = IW_MODE_INFRA;
2348         priv->rts_threshold = DEF_RTS_THRESHOLD;
2349         priv->frag_threshold = DEF_FRAG_THRESHOLD;
2350         priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2351         priv->txrate = TX_RATE_AUTO;
2352         priv->preamble_type = PREAMBLE_TYPE_LONG;
2353         priv->beacon_period = 100;
2354         priv->auth_mode = WLAN_AUTH_OPEN;
2355         priv->scan_min_time = DEF_SCAN_MIN_TIME;
2356         priv->scan_max_time = DEF_SCAN_MAX_TIME;
2357         priv->scan_mode = SCAN_TYPE_ACTIVE;
2358         priv->device_unplugged = 0;
2359
2360         /* mac80211 initialisation */
2361         wiphy = priv->hw->wiphy;
2362         priv->hw->wiphy->max_scan_ssids = 1;
2363         priv->hw->wiphy->max_scan_ie_len = 0;
2364         priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2365         priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = &at76_supported_band;
2366         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
2367         ieee80211_hw_set(priv->hw, SIGNAL_UNSPEC);
2368         priv->hw->max_signal = 100;
2369
2370         SET_IEEE80211_DEV(priv->hw, &interface->dev);
2371         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2372
2373         len = sizeof(wiphy->fw_version);
2374         snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2375                  priv->fw_version.major, priv->fw_version.minor,
2376                  priv->fw_version.patch, priv->fw_version.build);
2377
2378         wiphy->hw_version = priv->board_type;
2379
2380         wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2381
2382         ret = ieee80211_register_hw(priv->hw);
2383         if (ret) {
2384                 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2385                        ret);
2386                 goto exit;
2387         }
2388
2389         priv->mac80211_registered = 1;
2390
2391         wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2392                    dev_name(&interface->dev), priv->mac_addr,
2393                    priv->fw_version.major, priv->fw_version.minor,
2394                    priv->fw_version.patch, priv->fw_version.build);
2395         wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2396                    priv->regulatory_domain, priv->domain->name);
2397
2398 exit:
2399         return ret;
2400 }
2401
2402 static void at76_delete_device(struct at76_priv *priv)
2403 {
2404         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2405
2406         /* The device is gone, don't bother turning it off */
2407         priv->device_unplugged = 1;
2408
2409         tasklet_kill(&priv->rx_tasklet);
2410
2411         if (priv->mac80211_registered)
2412                 ieee80211_unregister_hw(priv->hw);
2413
2414         if (priv->tx_urb) {
2415                 usb_kill_urb(priv->tx_urb);
2416                 usb_free_urb(priv->tx_urb);
2417         }
2418         if (priv->rx_urb) {
2419                 usb_kill_urb(priv->rx_urb);
2420                 usb_free_urb(priv->rx_urb);
2421         }
2422
2423         at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2424
2425         kfree(priv->bulk_out_buffer);
2426
2427         del_timer_sync(&ledtrig_tx_timer);
2428
2429         kfree_skb(priv->rx_skb);
2430
2431         at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2432                  __func__);
2433         ieee80211_free_hw(priv->hw);
2434
2435         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2436 }
2437
2438 static int at76_probe(struct usb_interface *interface,
2439                       const struct usb_device_id *id)
2440 {
2441         int ret;
2442         struct at76_priv *priv;
2443         struct fwentry *fwe;
2444         struct usb_device *udev;
2445         int op_mode;
2446         int need_ext_fw = 0;
2447         struct mib_fw_version *fwv = NULL;
2448         int board_type = (int)id->driver_info;
2449
2450         udev = usb_get_dev(interface_to_usbdev(interface));
2451
2452         fwv = kmalloc(sizeof(*fwv), GFP_KERNEL);
2453         if (!fwv) {
2454                 ret = -ENOMEM;
2455                 goto exit;
2456         }
2457
2458         /* Load firmware into kernel memory */
2459         fwe = at76_load_firmware(udev, board_type);
2460         if (!fwe) {
2461                 ret = -ENOENT;
2462                 goto exit;
2463         }
2464
2465         op_mode = at76_get_op_mode(udev);
2466
2467         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2468
2469         /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2470            we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2471
2472         if (op_mode == OPMODE_HW_CONFIG_MODE) {
2473                 dev_err(&interface->dev,
2474                         "cannot handle a device in HW_CONFIG_MODE\n");
2475                 ret = -EBUSY;
2476                 goto exit;
2477         }
2478
2479         if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2480             && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2481                 /* download internal firmware part */
2482                 dev_printk(KERN_DEBUG, &interface->dev,
2483                            "downloading internal firmware\n");
2484                 ret = at76_load_internal_fw(udev, fwe);
2485                 if (ret < 0) {
2486                         dev_err(&interface->dev,
2487                                 "error %d downloading internal firmware\n",
2488                                 ret);
2489                 }
2490                 goto exit;
2491         }
2492
2493         /* Internal firmware already inside the device.  Get firmware
2494          * version to test if external firmware is loaded.
2495          * This works only for newer firmware, e.g. the Intersil 0.90.x
2496          * says "control timeout on ep0in" and subsequent
2497          * at76_get_op_mode() fail too :-( */
2498
2499         /* if version >= 0.100.x.y or device with built-in flash we can
2500          * query the device for the fw version */
2501         if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2502             || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2503                 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2504                 if (ret < 0 || (fwv->major | fwv->minor) == 0)
2505                         need_ext_fw = 1;
2506         } else
2507                 /* No way to check firmware version, reload to be sure */
2508                 need_ext_fw = 1;
2509
2510         if (need_ext_fw) {
2511                 dev_printk(KERN_DEBUG, &interface->dev,
2512                            "downloading external firmware\n");
2513
2514                 ret = at76_load_external_fw(udev, fwe);
2515                 if (ret < 0)
2516                         goto exit;
2517
2518                 /* Re-check firmware version */
2519                 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2520                 if (ret < 0) {
2521                         dev_err(&interface->dev,
2522                                 "error %d getting firmware version\n", ret);
2523                         goto exit;
2524                 }
2525         }
2526
2527         priv = at76_alloc_new_device(udev);
2528         if (!priv) {
2529                 ret = -ENOMEM;
2530                 goto exit;
2531         }
2532
2533         usb_set_intfdata(interface, priv);
2534
2535         memcpy(&priv->fw_version, fwv, sizeof(struct mib_fw_version));
2536         priv->board_type = board_type;
2537
2538         ret = at76_init_new_device(priv, interface);
2539         if (ret < 0)
2540                 at76_delete_device(priv);
2541
2542 exit:
2543         kfree(fwv);
2544         if (ret < 0)
2545                 usb_put_dev(udev);
2546         return ret;
2547 }
2548
2549 static void at76_disconnect(struct usb_interface *interface)
2550 {
2551         struct at76_priv *priv;
2552
2553         priv = usb_get_intfdata(interface);
2554         usb_set_intfdata(interface, NULL);
2555
2556         /* Disconnect after loading internal firmware */
2557         if (!priv)
2558                 return;
2559
2560         wiphy_info(priv->hw->wiphy, "disconnecting\n");
2561         at76_delete_device(priv);
2562         usb_put_dev(priv->udev);
2563         dev_info(&interface->dev, "disconnected\n");
2564 }
2565
2566 /* Structure for registering this driver with the USB subsystem */
2567 static struct usb_driver at76_driver = {
2568         .name = DRIVER_NAME,
2569         .probe = at76_probe,
2570         .disconnect = at76_disconnect,
2571         .id_table = dev_table,
2572         .disable_hub_initiated_lpm = 1,
2573 };
2574
2575 static int __init at76_mod_init(void)
2576 {
2577         int result;
2578
2579         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2580
2581         mutex_init(&fw_mutex);
2582
2583         /* register this driver with the USB subsystem */
2584         result = usb_register(&at76_driver);
2585         if (result < 0)
2586                 printk(KERN_ERR DRIVER_NAME
2587                        ": usb_register failed (status %d)\n", result);
2588         else
2589                 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2590         return result;
2591 }
2592
2593 static void __exit at76_mod_exit(void)
2594 {
2595         int i;
2596
2597         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2598         usb_deregister(&at76_driver);
2599         for (i = 0; i < ARRAY_SIZE(firmwares); i++)
2600                 release_firmware(firmwares[i].fw);
2601         led_trigger_unregister_simple(ledtrig_tx);
2602 }
2603
2604 module_param_named(debug, at76_debug, uint, 0600);
2605 MODULE_PARM_DESC(debug, "Debugging level");
2606
2607 module_init(at76_mod_init);
2608 module_exit(at76_mod_exit);
2609
2610 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2611 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2612 MODULE_AUTHOR("Alex <alex@foogod.com>");
2613 MODULE_AUTHOR("Nick Jones");
2614 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2615 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2616 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2617 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2618 MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
2619 MODULE_DESCRIPTION(DRIVER_DESC);
2620 MODULE_LICENSE("GPL");