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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * at76c503/at76c505 USB driver
4 *
5 * Copyright (c) 2002 - 2003 Oliver Kurth
6 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
7 * Copyright (c) 2004 Nick Jones
8 * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
9 * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
10 * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
11 * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
12 *
13 * This file is part of the Berlios driver for USB WLAN devices based on the
14 * Atmel AT76C503A/505/505A.
15 *
16 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
17 *
18 * TODO list is at the wiki:
19 *
20 * https://wireless.wiki.kernel.org/en/users/Drivers/at76c50x-usb#TODO
21 */
22
23#include <linux/init.h>
24#include <linux/kernel.h>
25#include <linux/sched.h>
26#include <linux/errno.h>
27#include <linux/slab.h>
28#include <linux/module.h>
29#include <linux/spinlock.h>
30#include <linux/list.h>
31#include <linux/usb.h>
32#include <linux/netdevice.h>
33#include <linux/if_arp.h>
34#include <linux/etherdevice.h>
35#include <linux/ethtool.h>
36#include <linux/wireless.h>
37#include <net/iw_handler.h>
38#include <net/ieee80211_radiotap.h>
39#include <linux/firmware.h>
40#include <linux/leds.h>
41#include <net/mac80211.h>
42
43#include "at76c50x-usb.h"
44
45/* Version information */
46#define DRIVER_NAME "at76c50x-usb"
47#define DRIVER_VERSION "0.17"
48#define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
49
50/* at76_debug bits */
51#define DBG_PROGRESS 0x00000001 /* authentication/accociation */
52#define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */
53#define DBG_IOCTL 0x00000004 /* ioctl calls / settings */
54#define DBG_MAC_STATE 0x00000008 /* MAC state transitions */
55#define DBG_TX_DATA 0x00000010 /* tx header */
56#define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */
57#define DBG_TX_MGMT 0x00000040 /* tx management */
58#define DBG_RX_DATA 0x00000080 /* rx data header */
59#define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */
60#define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */
61#define DBG_RX_BEACON 0x00000400 /* rx beacon */
62#define DBG_RX_CTRL 0x00000800 /* rx control */
63#define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */
64#define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */
65#define DBG_DEVSTART 0x00004000 /* fw download, device start */
66#define DBG_URB 0x00008000 /* rx urb status, ... */
67#define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */
68#define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */
69#define DBG_PM 0x00040000 /* power management settings */
70#define DBG_BSS_MATCH 0x00080000 /* BSS match failures */
71#define DBG_PARAMS 0x00100000 /* show configured parameters */
72#define DBG_WAIT_COMPLETE 0x00200000 /* command completion */
73#define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */
74#define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */
75#define DBG_MONITOR_MODE 0x01000000 /* monitor mode */
76#define DBG_MIB 0x02000000 /* dump all MIBs on startup */
77#define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */
78#define DBG_WE_EVENTS 0x08000000 /* dump wireless events */
79#define DBG_FW 0x10000000 /* firmware download */
80#define DBG_DFU 0x20000000 /* device firmware upgrade */
81#define DBG_CMD 0x40000000
82#define DBG_MAC80211 0x80000000
83
84#define DBG_DEFAULTS 0
85
86/* Use our own dbg macro */
87#define at76_dbg(bits, format, arg...) \
88do { \
89 if (at76_debug & (bits)) \
90 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
91} while (0)
92
93#define at76_dbg_dump(bits, buf, len, format, arg...) \
94do { \
95 if (at76_debug & (bits)) { \
96 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
97 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
98 } \
99} while (0)
100
101static uint at76_debug = DBG_DEFAULTS;
102
103/* Protect against concurrent firmware loading and parsing */
104static DEFINE_MUTEX(fw_mutex);
105
106static struct fwentry firmwares[] = {
107 [0] = { "" },
108 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
109 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
110 [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
111 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
112 [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
113 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
114 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
115 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
116};
117MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
118MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
119MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
120MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
121MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
122MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
123MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
124MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
125
126#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
127
128static const struct usb_device_id dev_table[] = {
129 /*
130 * at76c503-i3861
131 */
132 /* Generic AT76C503/3861 device */
133 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
134 /* Linksys WUSB11 v2.1/v2.6 */
135 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
136 /* Netgear MA101 rev. A */
137 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
138 /* Tekram U300C / Allnet ALL0193 */
139 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
140 /* HP HN210W J7801A */
141 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
142 /* Sitecom/Z-Com/Zyxel M4Y-750 */
143 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
144 /* Dynalink/Askey WLL013 (intersil) */
145 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
146 /* EZ connect 11Mpbs USB Wireless Adapter SMC2662W v1 */
147 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
148 /* BenQ AWL300 */
149 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
150 /* Addtron AWU-120, Compex WLU11 */
151 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
152 /* Intel AP310 AnyPoint II USB */
153 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
154 /* Dynalink L11U */
155 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
156 /* Arescom WL-210, FCC id 07J-GL2411USB */
157 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
158 /* I-O DATA WN-B11/USB */
159 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
160 /* BT Voyager 1010 */
161 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
162 /*
163 * at76c503-i3863
164 */
165 /* Generic AT76C503/3863 device */
166 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
167 /* Samsung SWL-2100U */
168 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
169 /*
170 * at76c503-rfmd
171 */
172 /* Generic AT76C503/RFMD device */
173 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
174 /* Dynalink/Askey WLL013 (rfmd) */
175 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
176 /* Linksys WUSB11 v2.6 */
177 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
178 /* Network Everywhere NWU11B */
179 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
180 /* Netgear MA101 rev. B */
181 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
182 /* D-Link DWL-120 rev. E */
183 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
184 /* Actiontec 802UAT1, HWU01150-01UK */
185 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
186 /* AirVast W-Buddie WN210 */
187 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
188 /* Dick Smith Electronics XH1153 802.11b USB adapter */
189 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
190 /* CNet CNUSB611 */
191 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
192 /* FiberLine FL-WL200U */
193 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
194 /* BenQ AWL400 USB stick */
195 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
196 /* 3Com 3CRSHEW696 */
197 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
198 /* Siemens Santis ADSL USB WLAN adapter WLL 013 */
199 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
200 /* Belkin F5D6050, version 2 */
201 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
202 /* iBlitzz, BWU613 (not *B or *SB) */
203 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
204 /* Gigabyte GN-WLBM101 */
205 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
206 /* Planex GW-US11S */
207 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
208 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
209 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
210 /* Corega Wireless LAN USB-11 mini */
211 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
212 /* Corega Wireless LAN USB-11 mini2 */
213 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
214 /* Uniden PCW100 */
215 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
216 /*
217 * at76c503-rfmd-acc
218 */
219 /* SMC2664W */
220 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
221 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
222 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
223 /*
224 * at76c505-rfmd
225 */
226 /* Generic AT76C505/RFMD */
227 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
228 /*
229 * at76c505-rfmd2958
230 */
231 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
232 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
233 /* Fiberline FL-WL240U */
234 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
235 /* CNet CNUSB-611G */
236 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
237 /* Linksys WUSB11 v2.8 */
238 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
239 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
240 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
241 /* Corega USB WLAN Stick 11 */
242 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
243 /* Microstar MSI Box MS6978 */
244 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
245 /*
246 * at76c505a-rfmd2958
247 */
248 /* Generic AT76C505A device */
249 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
250 /* Generic AT76C505AS device */
251 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
252 /* Siemens Gigaset USB WLAN Adapter 11 */
253 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
254 /* OQO Model 01+ Internal Wi-Fi */
255 { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
256 /*
257 * at76c505amx-rfmd
258 */
259 /* Generic AT76C505AMX device */
260 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
261 { }
262};
263
264MODULE_DEVICE_TABLE(usb, dev_table);
265
266/* Supported rates of this hardware, bit 7 marks basic rates */
267static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
268
269static const char *const preambles[] = { "long", "short", "auto" };
270
271/* Firmware download */
272/* DFU states */
273#define STATE_IDLE 0x00
274#define STATE_DETACH 0x01
275#define STATE_DFU_IDLE 0x02
276#define STATE_DFU_DOWNLOAD_SYNC 0x03
277#define STATE_DFU_DOWNLOAD_BUSY 0x04
278#define STATE_DFU_DOWNLOAD_IDLE 0x05
279#define STATE_DFU_MANIFEST_SYNC 0x06
280#define STATE_DFU_MANIFEST 0x07
281#define STATE_DFU_MANIFEST_WAIT_RESET 0x08
282#define STATE_DFU_UPLOAD_IDLE 0x09
283#define STATE_DFU_ERROR 0x0a
284
285/* DFU commands */
286#define DFU_DETACH 0
287#define DFU_DNLOAD 1
288#define DFU_UPLOAD 2
289#define DFU_GETSTATUS 3
290#define DFU_CLRSTATUS 4
291#define DFU_GETSTATE 5
292#define DFU_ABORT 6
293
294#define FW_BLOCK_SIZE 1024
295
296struct dfu_status {
297 unsigned char status;
298 unsigned char poll_timeout[3];
299 unsigned char state;
300 unsigned char string;
301} __packed;
302
303static inline int at76_is_intersil(enum board_type board)
304{
305 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
306}
307
308static inline int at76_is_503rfmd(enum board_type board)
309{
310 return (board == BOARD_503 || board == BOARD_503_ACC);
311}
312
313static inline int at76_is_505a(enum board_type board)
314{
315 return (board == BOARD_505A || board == BOARD_505AMX);
316}
317
318/* Load a block of the first (internal) part of the firmware */
319static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
320 void *block, int size)
321{
322 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
323 USB_TYPE_CLASS | USB_DIR_OUT |
324 USB_RECIP_INTERFACE, blockno, 0, block, size,
325 USB_CTRL_GET_TIMEOUT);
326}
327
328static int at76_dfu_get_status(struct usb_device *udev,
329 struct dfu_status *status)
330{
331 int ret;
332
333 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
334 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
335 0, 0, status, sizeof(struct dfu_status),
336 USB_CTRL_GET_TIMEOUT);
337 return ret;
338}
339
340static int at76_dfu_get_state(struct usb_device *udev, u8 *state)
341{
342 int ret;
343
344 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
345 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
346 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
347 return ret;
348}
349
350/* Convert timeout from the DFU status to jiffies */
351static inline unsigned long at76_get_timeout(struct dfu_status *s)
352{
353 return msecs_to_jiffies((s->poll_timeout[2] << 16)
354 | (s->poll_timeout[1] << 8)
355 | (s->poll_timeout[0]));
356}
357
358/* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
359 * its value in jiffies in the MANIFEST_SYNC state. */
360static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
361 int manifest_sync_timeout)
362{
363 int ret = 0;
364 int need_dfu_state = 1;
365 int is_done = 0;
366 u32 dfu_timeout = 0;
367 int bsize = 0;
368 int blockno = 0;
369 struct dfu_status *dfu_stat_buf = NULL;
370 u8 *dfu_state = NULL;
371 u8 *block = NULL;
372
373 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
374 manifest_sync_timeout);
375
376 if (!size) {
377 dev_err(&udev->dev, "FW buffer length invalid!\n");
378 return -EINVAL;
379 }
380
381 dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL);
382 if (!dfu_stat_buf) {
383 ret = -ENOMEM;
384 goto exit;
385 }
386
387 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
388 if (!block) {
389 ret = -ENOMEM;
390 goto exit;
391 }
392
393 dfu_state = kmalloc(sizeof(u8), GFP_KERNEL);
394 if (!dfu_state) {
395 ret = -ENOMEM;
396 goto exit;
397 }
398 *dfu_state = 0;
399
400 do {
401 if (need_dfu_state) {
402 ret = at76_dfu_get_state(udev, dfu_state);
403 if (ret < 0) {
404 dev_err(&udev->dev,
405 "cannot get DFU state: %d\n", ret);
406 goto exit;
407 }
408 need_dfu_state = 0;
409 }
410
411 switch (*dfu_state) {
412 case STATE_DFU_DOWNLOAD_SYNC:
413 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
414 ret = at76_dfu_get_status(udev, dfu_stat_buf);
415 if (ret >= 0) {
416 *dfu_state = dfu_stat_buf->state;
417 dfu_timeout = at76_get_timeout(dfu_stat_buf);
418 need_dfu_state = 0;
419 } else
420 dev_err(&udev->dev,
421 "at76_dfu_get_status returned %d\n",
422 ret);
423 break;
424
425 case STATE_DFU_DOWNLOAD_BUSY:
426 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
427 need_dfu_state = 1;
428
429 at76_dbg(DBG_DFU, "DFU: Resetting device");
430 schedule_timeout_interruptible(dfu_timeout);
431 break;
432
433 case STATE_DFU_DOWNLOAD_IDLE:
434 at76_dbg(DBG_DFU, "DOWNLOAD...");
435 fallthrough;
436 case STATE_DFU_IDLE:
437 at76_dbg(DBG_DFU, "DFU IDLE");
438
439 bsize = min_t(int, size, FW_BLOCK_SIZE);
440 memcpy(block, buf, bsize);
441 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
442 "bsize = %4d, blockno = %2d", size, bsize,
443 blockno);
444 ret =
445 at76_load_int_fw_block(udev, blockno, block, bsize);
446 buf += bsize;
447 size -= bsize;
448 blockno++;
449
450 if (ret != bsize)
451 dev_err(&udev->dev,
452 "at76_load_int_fw_block returned %d\n",
453 ret);
454 need_dfu_state = 1;
455 break;
456
457 case STATE_DFU_MANIFEST_SYNC:
458 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
459
460 ret = at76_dfu_get_status(udev, dfu_stat_buf);
461 if (ret < 0)
462 break;
463
464 *dfu_state = dfu_stat_buf->state;
465 dfu_timeout = at76_get_timeout(dfu_stat_buf);
466 need_dfu_state = 0;
467
468 /* override the timeout from the status response,
469 needed for AT76C505A */
470 if (manifest_sync_timeout > 0)
471 dfu_timeout = manifest_sync_timeout;
472
473 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
474 schedule_timeout_interruptible(dfu_timeout);
475 break;
476
477 case STATE_DFU_MANIFEST:
478 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
479 is_done = 1;
480 break;
481
482 case STATE_DFU_MANIFEST_WAIT_RESET:
483 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
484 is_done = 1;
485 break;
486
487 case STATE_DFU_UPLOAD_IDLE:
488 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
489 break;
490
491 case STATE_DFU_ERROR:
492 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
493 ret = -EPIPE;
494 break;
495
496 default:
497 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", *dfu_state);
498 ret = -EINVAL;
499 break;
500 }
501 } while (!is_done && (ret >= 0));
502
503exit:
504 kfree(dfu_state);
505 kfree(block);
506 kfree(dfu_stat_buf);
507
508 if (ret >= 0)
509 ret = 0;
510
511 return ret;
512}
513
514/* LED trigger */
515static int tx_activity;
516static void at76_ledtrig_tx_timerfunc(struct timer_list *unused);
517static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc);
518DEFINE_LED_TRIGGER(ledtrig_tx);
519
520static void at76_ledtrig_tx_timerfunc(struct timer_list *unused)
521{
522 static int tx_lastactivity;
523
524 if (tx_lastactivity != tx_activity) {
525 tx_lastactivity = tx_activity;
526 led_trigger_event(ledtrig_tx, LED_FULL);
527 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
528 } else
529 led_trigger_event(ledtrig_tx, LED_OFF);
530}
531
532static void at76_ledtrig_tx_activity(void)
533{
534 tx_activity++;
535 if (!timer_pending(&ledtrig_tx_timer))
536 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
537}
538
539static int at76_remap(struct usb_device *udev)
540{
541 int ret;
542 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
543 USB_TYPE_VENDOR | USB_DIR_OUT |
544 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
545 USB_CTRL_GET_TIMEOUT);
546 if (ret < 0)
547 return ret;
548 return 0;
549}
550
551static int at76_get_op_mode(struct usb_device *udev)
552{
553 int ret;
554 u8 saved;
555 u8 *op_mode;
556
557 op_mode = kmalloc(1, GFP_NOIO);
558 if (!op_mode)
559 return -ENOMEM;
560 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
561 USB_TYPE_VENDOR | USB_DIR_IN |
562 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
563 USB_CTRL_GET_TIMEOUT);
564 saved = *op_mode;
565 kfree(op_mode);
566
567 if (ret < 0)
568 return ret;
569 else if (ret < 1)
570 return -EIO;
571 else
572 return saved;
573}
574
575/* Load a block of the second ("external") part of the firmware */
576static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
577 void *block, int size)
578{
579 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
580 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
581 0x0802, blockno, block, size,
582 USB_CTRL_GET_TIMEOUT);
583}
584
585static inline int at76_get_hw_cfg(struct usb_device *udev,
586 union at76_hwcfg *buf, int buf_size)
587{
588 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
589 USB_TYPE_VENDOR | USB_DIR_IN |
590 USB_RECIP_INTERFACE, 0x0a02, 0,
591 buf, buf_size, USB_CTRL_GET_TIMEOUT);
592}
593
594/* Intersil boards use a different "value" for GetHWConfig requests */
595static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
596 union at76_hwcfg *buf, int buf_size)
597{
598 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
599 USB_TYPE_VENDOR | USB_DIR_IN |
600 USB_RECIP_INTERFACE, 0x0902, 0,
601 buf, buf_size, USB_CTRL_GET_TIMEOUT);
602}
603
604/* Get the hardware configuration for the adapter and put it to the appropriate
605 * fields of 'priv' (the GetHWConfig request and interpretation of the result
606 * depends on the board type) */
607static int at76_get_hw_config(struct at76_priv *priv)
608{
609 int ret;
610 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
611
612 if (!hwcfg)
613 return -ENOMEM;
614
615 if (at76_is_intersil(priv->board_type)) {
616 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
617 sizeof(hwcfg->i));
618 if (ret < 0)
619 goto exit;
620 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
621 priv->regulatory_domain = hwcfg->i.regulatory_domain;
622 } else if (at76_is_503rfmd(priv->board_type)) {
623 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
624 if (ret < 0)
625 goto exit;
626 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
627 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
628 } else {
629 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
630 if (ret < 0)
631 goto exit;
632 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
633 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
634 }
635
636exit:
637 kfree(hwcfg);
638 if (ret < 0)
639 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",
640 ret);
641
642 return ret;
643}
644
645static struct reg_domain const *at76_get_reg_domain(u16 code)
646{
647 int i;
648 static struct reg_domain const fd_tab[] = {
649 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */
650 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
651 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */
652 { 0x31, "Spain", 0x600 }, /* ch 10-11 */
653 { 0x32, "France", 0x1e00 }, /* ch 10-13 */
654 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */
655 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */
656 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */
657 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */
658 };
659
660 /* Last entry is fallback for unknown domain code */
661 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
662 if (code == fd_tab[i].code)
663 break;
664
665 return &fd_tab[i];
666}
667
668static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
669 int buf_size)
670{
671 int ret;
672
673 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
674 USB_TYPE_VENDOR | USB_DIR_IN |
675 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
676 USB_CTRL_GET_TIMEOUT);
677 if (ret >= 0 && ret != buf_size)
678 return -EIO;
679 return ret;
680}
681
682/* Return positive number for status, negative for an error */
683static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
684{
685 u8 *stat_buf;
686 int ret;
687
688 stat_buf = kmalloc(40, GFP_NOIO);
689 if (!stat_buf)
690 return -ENOMEM;
691
692 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
693 USB_TYPE_VENDOR | USB_DIR_IN |
694 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
695 40, USB_CTRL_GET_TIMEOUT);
696 if (ret >= 0)
697 ret = stat_buf[5];
698 kfree(stat_buf);
699
700 return ret;
701}
702
703#define MAKE_CMD_CASE(c) case (c): return #c
704static const char *at76_get_cmd_string(u8 cmd_status)
705{
706 switch (cmd_status) {
707 MAKE_CMD_CASE(CMD_SET_MIB);
708 MAKE_CMD_CASE(CMD_GET_MIB);
709 MAKE_CMD_CASE(CMD_SCAN);
710 MAKE_CMD_CASE(CMD_JOIN);
711 MAKE_CMD_CASE(CMD_START_IBSS);
712 MAKE_CMD_CASE(CMD_RADIO_ON);
713 MAKE_CMD_CASE(CMD_RADIO_OFF);
714 MAKE_CMD_CASE(CMD_STARTUP);
715 }
716
717 return "UNKNOWN";
718}
719
720static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
721 int buf_size)
722{
723 int ret;
724 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
725 buf_size, GFP_KERNEL);
726
727 if (!cmd_buf)
728 return -ENOMEM;
729
730 cmd_buf->cmd = cmd;
731 cmd_buf->reserved = 0;
732 cmd_buf->size = cpu_to_le16(buf_size);
733 memcpy(cmd_buf->data, buf, buf_size);
734
735 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
736 "issuing command %s (0x%02x)",
737 at76_get_cmd_string(cmd), cmd);
738
739 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
740 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
741 0, 0, cmd_buf,
742 sizeof(struct at76_command) + buf_size,
743 USB_CTRL_GET_TIMEOUT);
744 kfree(cmd_buf);
745 return ret;
746}
747
748#define MAKE_CMD_STATUS_CASE(c) case (c): return #c
749static const char *at76_get_cmd_status_string(u8 cmd_status)
750{
751 switch (cmd_status) {
752 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
753 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
754 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
755 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
756 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
757 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
758 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
759 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
760 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
761 }
762
763 return "UNKNOWN";
764}
765
766/* Wait until the command is completed */
767static int at76_wait_completion(struct at76_priv *priv, int cmd)
768{
769 int status = 0;
770 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
771
772 do {
773 status = at76_get_cmd_status(priv->udev, cmd);
774 if (status < 0) {
775 wiphy_err(priv->hw->wiphy,
776 "at76_get_cmd_status failed: %d\n",
777 status);
778 break;
779 }
780
781 at76_dbg(DBG_WAIT_COMPLETE,
782 "%s: Waiting on cmd %d, status = %d (%s)",
783 wiphy_name(priv->hw->wiphy), cmd, status,
784 at76_get_cmd_status_string(status));
785
786 if (status != CMD_STATUS_IN_PROGRESS
787 && status != CMD_STATUS_IDLE)
788 break;
789
790 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
791 if (time_after(jiffies, timeout)) {
792 wiphy_err(priv->hw->wiphy,
793 "completion timeout for command %d\n", cmd);
794 status = -ETIMEDOUT;
795 break;
796 }
797 } while (1);
798
799 return status;
800}
801
802static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
803{
804 int ret;
805
806 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
807 offsetof(struct set_mib_buffer,
808 data) + buf->size);
809 if (ret < 0)
810 return ret;
811
812 ret = at76_wait_completion(priv, CMD_SET_MIB);
813 if (ret != CMD_STATUS_COMPLETE) {
814 wiphy_info(priv->hw->wiphy,
815 "set_mib: at76_wait_completion failed with %d\n",
816 ret);
817 ret = -EIO;
818 }
819
820 return ret;
821}
822
823/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
824static int at76_set_radio(struct at76_priv *priv, int enable)
825{
826 int ret;
827 int cmd;
828
829 if (priv->radio_on == enable)
830 return 0;
831
832 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
833
834 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
835 if (ret < 0)
836 wiphy_err(priv->hw->wiphy,
837 "at76_set_card_command(%d) failed: %d\n", cmd, ret);
838 else
839 ret = 1;
840
841 priv->radio_on = enable;
842 return ret;
843}
844
845/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
846static int at76_set_pm_mode(struct at76_priv *priv)
847{
848 int ret = 0;
849
850 priv->mib_buf.type = MIB_MAC_MGMT;
851 priv->mib_buf.size = 1;
852 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
853 priv->mib_buf.data.byte = priv->pm_mode;
854
855 ret = at76_set_mib(priv, &priv->mib_buf);
856 if (ret < 0)
857 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
858 ret);
859
860 return ret;
861}
862
863static int at76_set_preamble(struct at76_priv *priv, u8 type)
864{
865 int ret = 0;
866
867 priv->mib_buf.type = MIB_LOCAL;
868 priv->mib_buf.size = 1;
869 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
870 priv->mib_buf.data.byte = type;
871
872 ret = at76_set_mib(priv, &priv->mib_buf);
873 if (ret < 0)
874 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
875 ret);
876
877 return ret;
878}
879
880static int at76_set_frag(struct at76_priv *priv, u16 size)
881{
882 int ret = 0;
883
884 priv->mib_buf.type = MIB_MAC;
885 priv->mib_buf.size = 2;
886 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
887 priv->mib_buf.data.word = cpu_to_le16(size);
888
889 ret = at76_set_mib(priv, &priv->mib_buf);
890 if (ret < 0)
891 wiphy_err(priv->hw->wiphy,
892 "set_mib (frag threshold) failed: %d\n", ret);
893
894 return ret;
895}
896
897static int at76_set_rts(struct at76_priv *priv, u16 size)
898{
899 int ret = 0;
900
901 priv->mib_buf.type = MIB_MAC;
902 priv->mib_buf.size = 2;
903 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
904 priv->mib_buf.data.word = cpu_to_le16(size);
905
906 ret = at76_set_mib(priv, &priv->mib_buf);
907 if (ret < 0)
908 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
909
910 return ret;
911}
912
913static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
914{
915 int ret = 0;
916
917 priv->mib_buf.type = MIB_LOCAL;
918 priv->mib_buf.size = 1;
919 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
920 priv->mib_buf.data.byte = onoff;
921
922 ret = at76_set_mib(priv, &priv->mib_buf);
923 if (ret < 0)
924 wiphy_err(priv->hw->wiphy,
925 "set_mib (autorate fallback) failed: %d\n", ret);
926
927 return ret;
928}
929
930static void at76_dump_mib_mac_addr(struct at76_priv *priv)
931{
932 int i;
933 int ret;
934 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
935 GFP_KERNEL);
936
937 if (!m)
938 return;
939
940 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
941 sizeof(struct mib_mac_addr));
942 if (ret < 0) {
943 wiphy_err(priv->hw->wiphy,
944 "at76_get_mib (MAC_ADDR) failed: %d\n", ret);
945 goto exit;
946 }
947
948 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
949 wiphy_name(priv->hw->wiphy),
950 m->mac_addr, m->res[0], m->res[1]);
951 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
952 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
953 "status %d", wiphy_name(priv->hw->wiphy), i,
954 m->group_addr[i], m->group_addr_status[i]);
955exit:
956 kfree(m);
957}
958
959static void at76_dump_mib_mac_wep(struct at76_priv *priv)
960{
961 int i;
962 int ret;
963 int key_len;
964 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
965
966 if (!m)
967 return;
968
969 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
970 sizeof(struct mib_mac_wep));
971 if (ret < 0) {
972 wiphy_err(priv->hw->wiphy,
973 "at76_get_mib (MAC_WEP) failed: %d\n", ret);
974 goto exit;
975 }
976
977 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
978 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
979 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
980 m->privacy_invoked, m->wep_default_key_id,
981 m->wep_key_mapping_len, m->exclude_unencrypted,
982 le32_to_cpu(m->wep_icv_error_count),
983 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
984 m->wep_default_key_id);
985
986 key_len = (m->encryption_level == 1) ?
987 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
988
989 for (i = 0; i < WEP_KEYS; i++)
990 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD",
991 wiphy_name(priv->hw->wiphy), i,
992 key_len, m->wep_default_keyvalue[i]);
993exit:
994 kfree(m);
995}
996
997static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
998{
999 int ret;
1000 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1001 GFP_KERNEL);
1002
1003 if (!m)
1004 return;
1005
1006 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1007 sizeof(struct mib_mac_mgmt));
1008 if (ret < 0) {
1009 wiphy_err(priv->hw->wiphy,
1010 "at76_get_mib (MAC_MGMT) failed: %d\n", ret);
1011 goto exit;
1012 }
1013
1014 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1015 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1016 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1017 "current_bssid %pM current_essid %*phD current_bss_type %d "
1018 "pm_mode %d ibss_change %d res %d "
1019 "multi_domain_capability_implemented %d "
1020 "international_roaming %d country_string %.3s",
1021 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1022 le16_to_cpu(m->CFP_max_duration),
1023 le16_to_cpu(m->medium_occupancy_limit),
1024 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1025 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1026 m->CFP_period, m->current_bssid,
1027 IW_ESSID_MAX_SIZE, m->current_essid,
1028 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1029 m->res, m->multi_domain_capability_implemented,
1030 m->multi_domain_capability_enabled, m->country_string);
1031exit:
1032 kfree(m);
1033}
1034
1035static void at76_dump_mib_mac(struct at76_priv *priv)
1036{
1037 int ret;
1038 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1039
1040 if (!m)
1041 return;
1042
1043 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1044 if (ret < 0) {
1045 wiphy_err(priv->hw->wiphy,
1046 "at76_get_mib (MAC) failed: %d\n", ret);
1047 goto exit;
1048 }
1049
1050 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1051 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1052 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1053 "scan_type %d scan_channel %d probe_delay %u "
1054 "min_channel_time %d max_channel_time %d listen_int %d "
1055 "desired_ssid %*phD desired_bssid %pM desired_bsstype %d",
1056 wiphy_name(priv->hw->wiphy),
1057 le32_to_cpu(m->max_tx_msdu_lifetime),
1058 le32_to_cpu(m->max_rx_lifetime),
1059 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1060 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1061 m->short_retry_time, m->long_retry_time, m->scan_type,
1062 m->scan_channel, le16_to_cpu(m->probe_delay),
1063 le16_to_cpu(m->min_channel_time),
1064 le16_to_cpu(m->max_channel_time),
1065 le16_to_cpu(m->listen_interval),
1066 IW_ESSID_MAX_SIZE, m->desired_ssid,
1067 m->desired_bssid, m->desired_bsstype);
1068exit:
1069 kfree(m);
1070}
1071
1072static void at76_dump_mib_phy(struct at76_priv *priv)
1073{
1074 int ret;
1075 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1076
1077 if (!m)
1078 return;
1079
1080 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1081 if (ret < 0) {
1082 wiphy_err(priv->hw->wiphy,
1083 "at76_get_mib (PHY) failed: %d\n", ret);
1084 goto exit;
1085 }
1086
1087 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1088 "sifs_time %d preamble_length %d plcp_header_length %d "
1089 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1090 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1091 "phy_type %d current_reg_domain %d",
1092 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1093 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1094 le16_to_cpu(m->preamble_length),
1095 le16_to_cpu(m->plcp_header_length),
1096 le16_to_cpu(m->mpdu_max_length),
1097 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1098 m->operation_rate_set[1], m->operation_rate_set[2],
1099 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1100 m->phy_type, m->current_reg_domain);
1101exit:
1102 kfree(m);
1103}
1104
1105static void at76_dump_mib_local(struct at76_priv *priv)
1106{
1107 int ret;
1108 struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL);
1109
1110 if (!m)
1111 return;
1112
1113 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m));
1114 if (ret < 0) {
1115 wiphy_err(priv->hw->wiphy,
1116 "at76_get_mib (LOCAL) failed: %d\n", ret);
1117 goto exit;
1118 }
1119
1120 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1121 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1122 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1123 m->beacon_enable,
1124 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1125 m->preamble_type);
1126exit:
1127 kfree(m);
1128}
1129
1130static void at76_dump_mib_mdomain(struct at76_priv *priv)
1131{
1132 int ret;
1133 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1134
1135 if (!m)
1136 return;
1137
1138 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1139 sizeof(struct mib_mdomain));
1140 if (ret < 0) {
1141 wiphy_err(priv->hw->wiphy,
1142 "at76_get_mib (MDOMAIN) failed: %d\n", ret);
1143 goto exit;
1144 }
1145
1146 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD",
1147 wiphy_name(priv->hw->wiphy),
1148 (int)sizeof(m->channel_list), m->channel_list);
1149
1150 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD",
1151 wiphy_name(priv->hw->wiphy),
1152 (int)sizeof(m->tx_powerlevel), m->tx_powerlevel);
1153exit:
1154 kfree(m);
1155}
1156
1157/* Enable monitor mode */
1158static int at76_start_monitor(struct at76_priv *priv)
1159{
1160 struct at76_req_scan scan;
1161 int ret;
1162
1163 memset(&scan, 0, sizeof(struct at76_req_scan));
1164 eth_broadcast_addr(scan.bssid);
1165
1166 scan.channel = priv->channel;
1167 scan.scan_type = SCAN_TYPE_PASSIVE;
1168 scan.international_scan = 0;
1169 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1170 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1171 scan.probe_delay = cpu_to_le16(0);
1172
1173 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1174 if (ret >= 0)
1175 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1176
1177 return ret;
1178}
1179
1180/* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1181 likely to compensate a flaw in the AT76C503A USB part ... */
1182static inline int at76_calc_padding(int wlen)
1183{
1184 /* add the USB TX header */
1185 wlen += AT76_TX_HDRLEN;
1186
1187 wlen = wlen % 64;
1188
1189 if (wlen < 50)
1190 return 50 - wlen;
1191
1192 if (wlen >= 61)
1193 return 64 + 50 - wlen;
1194
1195 return 0;
1196}
1197
1198static void at76_rx_callback(struct urb *urb)
1199{
1200 struct at76_priv *priv = urb->context;
1201
1202 tasklet_schedule(&priv->rx_tasklet);
1203}
1204
1205static int at76_submit_rx_urb(struct at76_priv *priv)
1206{
1207 int ret;
1208 int size;
1209 struct sk_buff *skb = priv->rx_skb;
1210
1211 if (!priv->rx_urb) {
1212 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n",
1213 __func__);
1214 return -EFAULT;
1215 }
1216
1217 if (!skb) {
1218 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1219 if (!skb) {
1220 wiphy_err(priv->hw->wiphy,
1221 "cannot allocate rx skbuff\n");
1222 ret = -ENOMEM;
1223 goto exit;
1224 }
1225 priv->rx_skb = skb;
1226 } else {
1227 skb_push(skb, skb_headroom(skb));
1228 skb_trim(skb, 0);
1229 }
1230
1231 size = skb_tailroom(skb);
1232 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1233 skb_put(skb, size), size, at76_rx_callback, priv);
1234 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1235 if (ret < 0) {
1236 if (ret == -ENODEV)
1237 at76_dbg(DBG_DEVSTART,
1238 "usb_submit_urb returned -ENODEV");
1239 else
1240 wiphy_err(priv->hw->wiphy,
1241 "rx, usb_submit_urb failed: %d\n", ret);
1242 }
1243
1244exit:
1245 if (ret < 0 && ret != -ENODEV)
1246 wiphy_err(priv->hw->wiphy,
1247 "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1248
1249 return ret;
1250}
1251
1252/* Download external firmware */
1253static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1254{
1255 int ret;
1256 int op_mode;
1257 int blockno = 0;
1258 int bsize;
1259 u8 *block;
1260 u8 *buf = fwe->extfw;
1261 int size = fwe->extfw_size;
1262
1263 if (!buf || !size)
1264 return -ENOENT;
1265
1266 op_mode = at76_get_op_mode(udev);
1267 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1268
1269 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1270 dev_err(&udev->dev, "unexpected opmode %d\n", op_mode);
1271 return -EINVAL;
1272 }
1273
1274 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1275 if (!block)
1276 return -ENOMEM;
1277
1278 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1279
1280 /* for fw >= 0.100, the device needs an extra empty block */
1281 do {
1282 bsize = min_t(int, size, FW_BLOCK_SIZE);
1283 memcpy(block, buf, bsize);
1284 at76_dbg(DBG_DEVSTART,
1285 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1286 size, bsize, blockno);
1287 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1288 if (ret != bsize) {
1289 dev_err(&udev->dev,
1290 "loading %dth firmware block failed: %d\n",
1291 blockno, ret);
1292 ret = -EIO;
1293 goto exit;
1294 }
1295 buf += bsize;
1296 size -= bsize;
1297 blockno++;
1298 } while (bsize > 0);
1299
1300 if (at76_is_505a(fwe->board_type)) {
1301 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1302 schedule_timeout_interruptible(HZ / 5 + 1);
1303 }
1304
1305exit:
1306 kfree(block);
1307 if (ret < 0)
1308 dev_err(&udev->dev,
1309 "downloading external firmware failed: %d\n", ret);
1310 return ret;
1311}
1312
1313/* Download internal firmware */
1314static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1315{
1316 int ret;
1317 int need_remap = !at76_is_505a(fwe->board_type);
1318
1319 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1320 need_remap ? 0 : 2 * HZ);
1321
1322 if (ret < 0) {
1323 dev_err(&udev->dev,
1324 "downloading internal fw failed with %d\n", ret);
1325 goto exit;
1326 }
1327
1328 at76_dbg(DBG_DEVSTART, "sending REMAP");
1329
1330 /* no REMAP for 505A (see SF driver) */
1331 if (need_remap) {
1332 ret = at76_remap(udev);
1333 if (ret < 0) {
1334 dev_err(&udev->dev,
1335 "sending REMAP failed with %d\n", ret);
1336 goto exit;
1337 }
1338 }
1339
1340 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1341 schedule_timeout_interruptible(2 * HZ + 1);
1342 usb_reset_device(udev);
1343
1344exit:
1345 return ret;
1346}
1347
1348static int at76_startup_device(struct at76_priv *priv)
1349{
1350 struct at76_card_config *ccfg = &priv->card_config;
1351 int ret;
1352
1353 at76_dbg(DBG_PARAMS,
1354 "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d "
1355 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1356 priv->essid, IW_ESSID_MAX_SIZE, priv->essid,
1357 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1358 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1359 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1360 at76_dbg(DBG_PARAMS,
1361 "%s param: preamble %s rts %d retry %d frag %d "
1362 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1363 preambles[priv->preamble_type], priv->rts_threshold,
1364 priv->short_retry_limit, priv->frag_threshold,
1365 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1366 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1367 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1368 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1369 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1370 at76_dbg(DBG_PARAMS,
1371 "%s param: pm_mode %d pm_period %d auth_mode %s "
1372 "scan_times %d %d scan_mode %s",
1373 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1374 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1375 priv->scan_min_time, priv->scan_max_time,
1376 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1377
1378 memset(ccfg, 0, sizeof(struct at76_card_config));
1379 ccfg->promiscuous_mode = 0;
1380 ccfg->short_retry_limit = priv->short_retry_limit;
1381
1382 if (priv->wep_enabled) {
1383 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1384 ccfg->encryption_type = 2;
1385 else
1386 ccfg->encryption_type = 1;
1387
1388 /* jal: always exclude unencrypted if WEP is active */
1389 ccfg->exclude_unencrypted = 1;
1390 } else {
1391 ccfg->exclude_unencrypted = 0;
1392 ccfg->encryption_type = 0;
1393 }
1394
1395 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1396 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1397
1398 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1399 /* jal: really needed, we do a set_mib for autorate later ??? */
1400 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1401 ccfg->channel = priv->channel;
1402 ccfg->privacy_invoked = priv->wep_enabled;
1403 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1404 ccfg->ssid_len = priv->essid_size;
1405
1406 ccfg->wep_default_key_id = priv->wep_key_id;
1407 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1408 sizeof(priv->wep_keys));
1409
1410 ccfg->short_preamble = priv->preamble_type;
1411 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1412
1413 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1414 sizeof(struct at76_card_config));
1415 if (ret < 0) {
1416 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1417 ret);
1418 return ret;
1419 }
1420
1421 at76_wait_completion(priv, CMD_STARTUP);
1422
1423 /* remove BSSID from previous run */
1424 eth_zero_addr(priv->bssid);
1425
1426 priv->scanning = false;
1427
1428 if (at76_set_radio(priv, 1) == 1)
1429 at76_wait_completion(priv, CMD_RADIO_ON);
1430
1431 ret = at76_set_preamble(priv, priv->preamble_type);
1432 if (ret < 0)
1433 return ret;
1434
1435 ret = at76_set_frag(priv, priv->frag_threshold);
1436 if (ret < 0)
1437 return ret;
1438
1439 ret = at76_set_rts(priv, priv->rts_threshold);
1440 if (ret < 0)
1441 return ret;
1442
1443 ret = at76_set_autorate_fallback(priv,
1444 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1445 if (ret < 0)
1446 return ret;
1447
1448 ret = at76_set_pm_mode(priv);
1449 if (ret < 0)
1450 return ret;
1451
1452 if (at76_debug & DBG_MIB) {
1453 at76_dump_mib_mac(priv);
1454 at76_dump_mib_mac_addr(priv);
1455 at76_dump_mib_mac_mgmt(priv);
1456 at76_dump_mib_mac_wep(priv);
1457 at76_dump_mib_mdomain(priv);
1458 at76_dump_mib_phy(priv);
1459 at76_dump_mib_local(priv);
1460 }
1461
1462 return 0;
1463}
1464
1465/* Enable or disable promiscuous mode */
1466static void at76_work_set_promisc(struct work_struct *work)
1467{
1468 struct at76_priv *priv = container_of(work, struct at76_priv,
1469 work_set_promisc);
1470 int ret = 0;
1471
1472 if (priv->device_unplugged)
1473 return;
1474
1475 mutex_lock(&priv->mtx);
1476
1477 priv->mib_buf.type = MIB_LOCAL;
1478 priv->mib_buf.size = 1;
1479 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1480 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1481
1482 ret = at76_set_mib(priv, &priv->mib_buf);
1483 if (ret < 0)
1484 wiphy_err(priv->hw->wiphy,
1485 "set_mib (promiscuous_mode) failed: %d\n", ret);
1486
1487 mutex_unlock(&priv->mtx);
1488}
1489
1490/* Submit Rx urb back to the device */
1491static void at76_work_submit_rx(struct work_struct *work)
1492{
1493 struct at76_priv *priv = container_of(work, struct at76_priv,
1494 work_submit_rx);
1495
1496 mutex_lock(&priv->mtx);
1497 at76_submit_rx_urb(priv);
1498 mutex_unlock(&priv->mtx);
1499}
1500
1501/* This is a workaround to make scan working:
1502 * currently mac80211 does not process frames with no frequency
1503 * information.
1504 * However during scan the HW performs a sweep by itself, and we
1505 * are unable to know where the radio is actually tuned.
1506 * This function tries to do its best to guess this information..
1507 * During scan, If the current frame is a beacon or a probe response,
1508 * the channel information is extracted from it.
1509 * When not scanning, for other frames, or if it happens that for
1510 * whatever reason we fail to parse beacons and probe responses, this
1511 * function returns the priv->channel information, that should be correct
1512 * at least when we are not scanning.
1513 */
1514static inline int at76_guess_freq(struct at76_priv *priv)
1515{
1516 size_t el_off;
1517 const u8 *el;
1518 int channel = priv->channel;
1519 int len = priv->rx_skb->len;
1520 struct ieee80211_hdr *hdr = (void *)priv->rx_skb->data;
1521
1522 if (!priv->scanning)
1523 goto exit;
1524
1525 if (len < 24)
1526 goto exit;
1527
1528 if (ieee80211_is_probe_resp(hdr->frame_control)) {
1529 el_off = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1530 el = ((struct ieee80211_mgmt *)hdr)->u.probe_resp.variable;
1531 } else if (ieee80211_is_beacon(hdr->frame_control)) {
1532 el_off = offsetof(struct ieee80211_mgmt, u.beacon.variable);
1533 el = ((struct ieee80211_mgmt *)hdr)->u.beacon.variable;
1534 } else {
1535 goto exit;
1536 }
1537 len -= el_off;
1538
1539 el = cfg80211_find_ie(WLAN_EID_DS_PARAMS, el, len);
1540 if (el && el[1] > 0)
1541 channel = el[2];
1542
1543exit:
1544 return ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1545}
1546
1547static void at76_rx_tasklet(struct tasklet_struct *t)
1548{
1549 struct at76_priv *priv = from_tasklet(priv, t, rx_tasklet);
1550 struct urb *urb = priv->rx_urb;
1551 struct at76_rx_buffer *buf;
1552 struct ieee80211_rx_status rx_status = { 0 };
1553
1554 if (priv->device_unplugged) {
1555 at76_dbg(DBG_DEVSTART, "device unplugged");
1556 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1557 return;
1558 }
1559
1560 if (!priv->rx_skb || !priv->rx_skb->data)
1561 return;
1562
1563 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1564
1565 if (urb->status != 0) {
1566 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1567 at76_dbg(DBG_URB,
1568 "%s %s: - nonzero Rx bulk status received: %d",
1569 __func__, wiphy_name(priv->hw->wiphy),
1570 urb->status);
1571 return;
1572 }
1573
1574 at76_dbg(DBG_RX_ATMEL_HDR,
1575 "%s: rx frame: rate %d rssi %d noise %d link %d",
1576 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1577 buf->noise_level, buf->link_quality);
1578
1579 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1580 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1581 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1582 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1583
1584 rx_status.signal = buf->rssi;
1585 rx_status.flag |= RX_FLAG_DECRYPTED;
1586 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1587 rx_status.band = NL80211_BAND_2GHZ;
1588 rx_status.freq = at76_guess_freq(priv);
1589
1590 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1591 priv->rx_skb->len, priv->rx_skb->data_len);
1592 memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1593 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1594
1595 /* Use a new skb for the next receive */
1596 priv->rx_skb = NULL;
1597
1598 at76_submit_rx_urb(priv);
1599}
1600
1601/* Load firmware into kernel memory and parse it */
1602static struct fwentry *at76_load_firmware(struct usb_device *udev,
1603 enum board_type board_type)
1604{
1605 int ret;
1606 char *str;
1607 struct at76_fw_header *fwh;
1608 struct fwentry *fwe = &firmwares[board_type];
1609
1610 mutex_lock(&fw_mutex);
1611
1612 if (fwe->loaded) {
1613 at76_dbg(DBG_FW, "re-using previously loaded fw");
1614 goto exit;
1615 }
1616
1617 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1618 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1619 if (ret < 0) {
1620 dev_err(&udev->dev, "firmware %s not found!\n",
1621 fwe->fwname);
1622 dev_err(&udev->dev,
1623 "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n");
1624 goto exit;
1625 }
1626
1627 at76_dbg(DBG_FW, "got it.");
1628 fwh = (struct at76_fw_header *)(fwe->fw->data);
1629
1630 if (fwe->fw->size <= sizeof(*fwh)) {
1631 dev_err(&udev->dev,
1632 "firmware is too short (0x%zx)\n", fwe->fw->size);
1633 goto exit;
1634 }
1635
1636 /* CRC currently not checked */
1637 fwe->board_type = le32_to_cpu(fwh->board_type);
1638 if (fwe->board_type != board_type) {
1639 dev_err(&udev->dev,
1640 "board type mismatch, requested %u, got %u\n",
1641 board_type, fwe->board_type);
1642 goto exit;
1643 }
1644
1645 fwe->fw_version.major = fwh->major;
1646 fwe->fw_version.minor = fwh->minor;
1647 fwe->fw_version.patch = fwh->patch;
1648 fwe->fw_version.build = fwh->build;
1649
1650 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1651 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1652 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1653 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1654 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1655
1656 fwe->loaded = 1;
1657
1658 dev_printk(KERN_DEBUG, &udev->dev,
1659 "using firmware %s (version %d.%d.%d-%d)\n",
1660 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1661
1662 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1663 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1664 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1665 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1666
1667exit:
1668 mutex_unlock(&fw_mutex);
1669
1670 if (fwe->loaded)
1671 return fwe;
1672 else
1673 return NULL;
1674}
1675
1676static int at76_join(struct at76_priv *priv)
1677{
1678 struct at76_req_join join;
1679 int ret;
1680
1681 memset(&join, 0, sizeof(struct at76_req_join));
1682 memcpy(join.essid, priv->essid, priv->essid_size);
1683 join.essid_size = priv->essid_size;
1684 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1685 join.bss_type = INFRASTRUCTURE_MODE;
1686 join.channel = priv->channel;
1687 join.timeout = cpu_to_le16(2000);
1688
1689 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1690 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1691 sizeof(struct at76_req_join));
1692
1693 if (ret < 0) {
1694 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1695 ret);
1696 return 0;
1697 }
1698
1699 ret = at76_wait_completion(priv, CMD_JOIN);
1700 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1701 if (ret != CMD_STATUS_COMPLETE) {
1702 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1703 ret);
1704 return 0;
1705 }
1706
1707 at76_set_pm_mode(priv);
1708
1709 return 0;
1710}
1711
1712static void at76_work_join_bssid(struct work_struct *work)
1713{
1714 struct at76_priv *priv = container_of(work, struct at76_priv,
1715 work_join_bssid);
1716
1717 if (priv->device_unplugged)
1718 return;
1719
1720 mutex_lock(&priv->mtx);
1721
1722 if (is_valid_ether_addr(priv->bssid))
1723 at76_join(priv);
1724
1725 mutex_unlock(&priv->mtx);
1726}
1727
1728static void at76_mac80211_tx_callback(struct urb *urb)
1729{
1730 struct at76_priv *priv = urb->context;
1731 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1732
1733 at76_dbg(DBG_MAC80211, "%s()", __func__);
1734
1735 switch (urb->status) {
1736 case 0:
1737 /* success */
1738 info->flags |= IEEE80211_TX_STAT_ACK;
1739 break;
1740 case -ENOENT:
1741 case -ECONNRESET:
1742 /* fail, urb has been unlinked */
1743 /* FIXME: add error message */
1744 break;
1745 default:
1746 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1747 __func__, urb->status);
1748 break;
1749 }
1750
1751 memset(&info->status, 0, sizeof(info->status));
1752
1753 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1754
1755 priv->tx_skb = NULL;
1756
1757 ieee80211_wake_queues(priv->hw);
1758}
1759
1760static void at76_mac80211_tx(struct ieee80211_hw *hw,
1761 struct ieee80211_tx_control *control,
1762 struct sk_buff *skb)
1763{
1764 struct at76_priv *priv = hw->priv;
1765 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1766 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1767 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1768 int padding, submit_len, ret;
1769
1770 at76_dbg(DBG_MAC80211, "%s()", __func__);
1771
1772 if (priv->tx_urb->status == -EINPROGRESS) {
1773 wiphy_err(priv->hw->wiphy,
1774 "%s called while tx urb is pending\n", __func__);
1775 dev_kfree_skb_any(skb);
1776 return;
1777 }
1778
1779 /* The following code lines are important when the device is going to
1780 * authenticate with a new bssid. The driver must send CMD_JOIN before
1781 * an authentication frame is transmitted. For this to succeed, the
1782 * correct bssid of the AP must be known. As mac80211 does not inform
1783 * drivers about the bssid prior to the authentication process the
1784 * following workaround is necessary. If the TX frame is an
1785 * authentication frame extract the bssid and send the CMD_JOIN. */
1786 if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1787 if (!ether_addr_equal_64bits(priv->bssid, mgmt->bssid)) {
1788 memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1789 ieee80211_queue_work(hw, &priv->work_join_bssid);
1790 dev_kfree_skb_any(skb);
1791 return;
1792 }
1793 }
1794
1795 ieee80211_stop_queues(hw);
1796
1797 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
1798
1799 WARN_ON(priv->tx_skb != NULL);
1800
1801 priv->tx_skb = skb;
1802 padding = at76_calc_padding(skb->len);
1803 submit_len = AT76_TX_HDRLEN + skb->len + padding;
1804
1805 /* setup 'Atmel' header */
1806 memset(tx_buffer, 0, sizeof(*tx_buffer));
1807 tx_buffer->padding = padding;
1808 tx_buffer->wlength = cpu_to_le16(skb->len);
1809 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1810 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1811 memcpy(tx_buffer->packet, skb->data, skb->len);
1812
1813 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1814 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1815 tx_buffer->padding, tx_buffer->tx_rate);
1816
1817 /* send stuff */
1818 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1819 "%s(): tx_buffer %d bytes:", __func__, submit_len);
1820 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1821 submit_len, at76_mac80211_tx_callback, priv);
1822 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1823 if (ret) {
1824 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1825 if (ret == -EINVAL)
1826 wiphy_err(priv->hw->wiphy,
1827 "-EINVAL: tx urb %p hcpriv %p complete %p\n",
1828 priv->tx_urb,
1829 priv->tx_urb->hcpriv, priv->tx_urb->complete);
1830 }
1831}
1832
1833static int at76_mac80211_start(struct ieee80211_hw *hw)
1834{
1835 struct at76_priv *priv = hw->priv;
1836 int ret;
1837
1838 at76_dbg(DBG_MAC80211, "%s()", __func__);
1839
1840 mutex_lock(&priv->mtx);
1841
1842 ret = at76_submit_rx_urb(priv);
1843 if (ret < 0) {
1844 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1845 ret);
1846 goto error;
1847 }
1848
1849 at76_startup_device(priv);
1850
1851 at76_start_monitor(priv);
1852
1853error:
1854 mutex_unlock(&priv->mtx);
1855
1856 return 0;
1857}
1858
1859static void at76_mac80211_stop(struct ieee80211_hw *hw)
1860{
1861 struct at76_priv *priv = hw->priv;
1862
1863 at76_dbg(DBG_MAC80211, "%s()", __func__);
1864
1865 cancel_delayed_work(&priv->dwork_hw_scan);
1866 cancel_work_sync(&priv->work_join_bssid);
1867 cancel_work_sync(&priv->work_set_promisc);
1868
1869 mutex_lock(&priv->mtx);
1870
1871 if (!priv->device_unplugged) {
1872 /* We are called by "ifconfig ethX down", not because the
1873 * device is not available anymore. */
1874 at76_set_radio(priv, 0);
1875
1876 /* We unlink rx_urb because at76_open() re-submits it.
1877 * If unplugged, at76_delete_device() takes care of it. */
1878 usb_kill_urb(priv->rx_urb);
1879 }
1880
1881 mutex_unlock(&priv->mtx);
1882}
1883
1884static int at76_add_interface(struct ieee80211_hw *hw,
1885 struct ieee80211_vif *vif)
1886{
1887 struct at76_priv *priv = hw->priv;
1888 int ret = 0;
1889
1890 at76_dbg(DBG_MAC80211, "%s()", __func__);
1891
1892 mutex_lock(&priv->mtx);
1893
1894 switch (vif->type) {
1895 case NL80211_IFTYPE_STATION:
1896 priv->iw_mode = IW_MODE_INFRA;
1897 break;
1898 default:
1899 ret = -EOPNOTSUPP;
1900 goto exit;
1901 }
1902
1903exit:
1904 mutex_unlock(&priv->mtx);
1905
1906 return ret;
1907}
1908
1909static void at76_remove_interface(struct ieee80211_hw *hw,
1910 struct ieee80211_vif *vif)
1911{
1912 at76_dbg(DBG_MAC80211, "%s()", __func__);
1913}
1914
1915static void at76_dwork_hw_scan(struct work_struct *work)
1916{
1917 struct at76_priv *priv = container_of(work, struct at76_priv,
1918 dwork_hw_scan.work);
1919 struct cfg80211_scan_info info = {
1920 .aborted = false,
1921 };
1922 int ret;
1923
1924 if (priv->device_unplugged)
1925 return;
1926
1927 mutex_lock(&priv->mtx);
1928
1929 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1930 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1931
1932 /* FIXME: add maximum time for scan to complete */
1933
1934 if (ret != CMD_STATUS_COMPLETE) {
1935 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1936 SCAN_POLL_INTERVAL);
1937 mutex_unlock(&priv->mtx);
1938 return;
1939 }
1940
1941 if (is_valid_ether_addr(priv->bssid))
1942 at76_join(priv);
1943
1944 priv->scanning = false;
1945
1946 mutex_unlock(&priv->mtx);
1947
1948 ieee80211_scan_completed(priv->hw, &info);
1949
1950 ieee80211_wake_queues(priv->hw);
1951}
1952
1953static int at76_hw_scan(struct ieee80211_hw *hw,
1954 struct ieee80211_vif *vif,
1955 struct ieee80211_scan_request *hw_req)
1956{
1957 struct cfg80211_scan_request *req = &hw_req->req;
1958 struct at76_priv *priv = hw->priv;
1959 struct at76_req_scan scan;
1960 u8 *ssid = NULL;
1961 int ret, len = 0;
1962
1963 at76_dbg(DBG_MAC80211, "%s():", __func__);
1964
1965 if (priv->device_unplugged)
1966 return 0;
1967
1968 mutex_lock(&priv->mtx);
1969
1970 ieee80211_stop_queues(hw);
1971
1972 memset(&scan, 0, sizeof(struct at76_req_scan));
1973 eth_broadcast_addr(scan.bssid);
1974
1975 if (req->n_ssids) {
1976 scan.scan_type = SCAN_TYPE_ACTIVE;
1977 ssid = req->ssids[0].ssid;
1978 len = req->ssids[0].ssid_len;
1979 } else {
1980 scan.scan_type = SCAN_TYPE_PASSIVE;
1981 }
1982
1983 if (len) {
1984 memcpy(scan.essid, ssid, len);
1985 scan.essid_size = len;
1986 }
1987
1988 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1989 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1990 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1991 scan.international_scan = 0;
1992
1993 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1994 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1995
1996 if (ret < 0) {
1997 wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret);
1998 goto exit;
1999 }
2000
2001 priv->scanning = true;
2002 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
2003 SCAN_POLL_INTERVAL);
2004
2005exit:
2006 mutex_unlock(&priv->mtx);
2007
2008 return 0;
2009}
2010
2011static int at76_config(struct ieee80211_hw *hw, u32 changed)
2012{
2013 struct at76_priv *priv = hw->priv;
2014
2015 at76_dbg(DBG_MAC80211, "%s(): channel %d",
2016 __func__, hw->conf.chandef.chan->hw_value);
2017 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
2018
2019 mutex_lock(&priv->mtx);
2020
2021 priv->channel = hw->conf.chandef.chan->hw_value;
2022
2023 if (is_valid_ether_addr(priv->bssid))
2024 at76_join(priv);
2025 else
2026 at76_start_monitor(priv);
2027
2028 mutex_unlock(&priv->mtx);
2029
2030 return 0;
2031}
2032
2033static void at76_bss_info_changed(struct ieee80211_hw *hw,
2034 struct ieee80211_vif *vif,
2035 struct ieee80211_bss_conf *conf,
2036 u64 changed)
2037{
2038 struct at76_priv *priv = hw->priv;
2039
2040 at76_dbg(DBG_MAC80211, "%s():", __func__);
2041
2042 if (!(changed & BSS_CHANGED_BSSID))
2043 return;
2044
2045 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2046
2047 mutex_lock(&priv->mtx);
2048
2049 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2050
2051 if (is_valid_ether_addr(priv->bssid))
2052 /* mac80211 is joining a bss */
2053 at76_join(priv);
2054
2055 mutex_unlock(&priv->mtx);
2056}
2057
2058/* must be atomic */
2059static void at76_configure_filter(struct ieee80211_hw *hw,
2060 unsigned int changed_flags,
2061 unsigned int *total_flags, u64 multicast)
2062{
2063 struct at76_priv *priv = hw->priv;
2064 int flags;
2065
2066 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2067 "total_flags=0x%08x",
2068 __func__, changed_flags, *total_flags);
2069
2070 flags = changed_flags & AT76_SUPPORTED_FILTERS;
2071 *total_flags = AT76_SUPPORTED_FILTERS;
2072
2073 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2074 if (priv->device_unplugged)
2075 return;
2076
2077 /* FIXME: access to priv->promisc should be protected with
2078 * priv->mtx, but it's impossible because this function needs to be
2079 * atomic */
2080
2081 if (flags && !priv->promisc) {
2082 /* mac80211 wants us to enable promiscuous mode */
2083 priv->promisc = 1;
2084 } else if (!flags && priv->promisc) {
2085 /* we need to disable promiscuous mode */
2086 priv->promisc = 0;
2087 } else
2088 return;
2089
2090 ieee80211_queue_work(hw, &priv->work_set_promisc);
2091}
2092
2093static int at76_set_wep(struct at76_priv *priv)
2094{
2095 int ret = 0;
2096 struct mib_mac_wep *mib_data = &priv->mib_buf.data.wep_mib;
2097
2098 priv->mib_buf.type = MIB_MAC_WEP;
2099 priv->mib_buf.size = sizeof(struct mib_mac_wep);
2100 priv->mib_buf.index = 0;
2101
2102 memset(mib_data, 0, sizeof(*mib_data));
2103
2104 if (priv->wep_enabled) {
2105 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
2106 mib_data->encryption_level = 2;
2107 else
2108 mib_data->encryption_level = 1;
2109
2110 /* always exclude unencrypted if WEP is active */
2111 mib_data->exclude_unencrypted = 1;
2112 } else {
2113 mib_data->exclude_unencrypted = 0;
2114 mib_data->encryption_level = 0;
2115 }
2116
2117 mib_data->privacy_invoked = priv->wep_enabled;
2118 mib_data->wep_default_key_id = priv->wep_key_id;
2119 memcpy(mib_data->wep_default_keyvalue, priv->wep_keys,
2120 sizeof(priv->wep_keys));
2121
2122 ret = at76_set_mib(priv, &priv->mib_buf);
2123
2124 if (ret < 0)
2125 wiphy_err(priv->hw->wiphy,
2126 "set_mib (wep) failed: %d\n", ret);
2127
2128 return ret;
2129}
2130
2131static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2132 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2133 struct ieee80211_key_conf *key)
2134{
2135 struct at76_priv *priv = hw->priv;
2136
2137 int i;
2138
2139 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d "
2140 "key->keylen %d",
2141 __func__, cmd, key->cipher, key->keyidx, key->keylen);
2142
2143 if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) &&
2144 (key->cipher != WLAN_CIPHER_SUITE_WEP104))
2145 return -EOPNOTSUPP;
2146
2147 key->hw_key_idx = key->keyidx;
2148
2149 mutex_lock(&priv->mtx);
2150
2151 switch (cmd) {
2152 case SET_KEY:
2153 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2154 priv->wep_keys_len[key->keyidx] = key->keylen;
2155
2156 /* FIXME: find out how to do this properly */
2157 priv->wep_key_id = key->keyidx;
2158
2159 break;
2160 case DISABLE_KEY:
2161 default:
2162 priv->wep_keys_len[key->keyidx] = 0;
2163 break;
2164 }
2165
2166 priv->wep_enabled = 0;
2167
2168 for (i = 0; i < WEP_KEYS; i++) {
2169 if (priv->wep_keys_len[i] != 0)
2170 priv->wep_enabled = 1;
2171 }
2172
2173 at76_set_wep(priv);
2174
2175 mutex_unlock(&priv->mtx);
2176
2177 return 0;
2178}
2179
2180static const struct ieee80211_ops at76_ops = {
2181 .tx = at76_mac80211_tx,
2182 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
2183 .add_interface = at76_add_interface,
2184 .remove_interface = at76_remove_interface,
2185 .config = at76_config,
2186 .bss_info_changed = at76_bss_info_changed,
2187 .configure_filter = at76_configure_filter,
2188 .start = at76_mac80211_start,
2189 .stop = at76_mac80211_stop,
2190 .hw_scan = at76_hw_scan,
2191 .set_key = at76_set_key,
2192};
2193
2194/* Allocate network device and initialize private data */
2195static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2196{
2197 struct ieee80211_hw *hw;
2198 struct at76_priv *priv;
2199
2200 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2201 if (!hw) {
2202 printk(KERN_ERR DRIVER_NAME ": could not register"
2203 " ieee80211_hw\n");
2204 return NULL;
2205 }
2206
2207 priv = hw->priv;
2208 priv->hw = hw;
2209
2210 priv->udev = udev;
2211
2212 mutex_init(&priv->mtx);
2213 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2214 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2215 INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2216 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2217
2218 tasklet_setup(&priv->rx_tasklet, at76_rx_tasklet);
2219
2220 priv->pm_mode = AT76_PM_OFF;
2221 priv->pm_period = 0;
2222
2223 /* unit us */
2224
2225 return priv;
2226}
2227
2228static int at76_alloc_urbs(struct at76_priv *priv,
2229 struct usb_interface *interface)
2230{
2231 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2232 int i;
2233 int buffer_size;
2234 struct usb_host_interface *iface_desc;
2235
2236 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2237
2238 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2239 interface->cur_altsetting->desc.bNumEndpoints);
2240
2241 ep_in = NULL;
2242 ep_out = NULL;
2243 iface_desc = interface->cur_altsetting;
2244 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2245 endpoint = &iface_desc->endpoint[i].desc;
2246
2247 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2248 __func__, i, endpoint->bEndpointAddress,
2249 endpoint->bmAttributes);
2250
2251 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2252 ep_in = endpoint;
2253
2254 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2255 ep_out = endpoint;
2256 }
2257
2258 if (!ep_in || !ep_out) {
2259 dev_err(&interface->dev, "bulk endpoints missing\n");
2260 return -ENXIO;
2261 }
2262
2263 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2264 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2265
2266 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2267 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2268 if (!priv->rx_urb || !priv->tx_urb) {
2269 dev_err(&interface->dev, "cannot allocate URB\n");
2270 return -ENOMEM;
2271 }
2272
2273 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2274 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2275 if (!priv->bulk_out_buffer)
2276 return -ENOMEM;
2277
2278 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2279
2280 return 0;
2281}
2282
2283static struct ieee80211_rate at76_rates[] = {
2284 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2285 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2286 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2287 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2288};
2289
2290static struct ieee80211_channel at76_channels[] = {
2291 { .center_freq = 2412, .hw_value = 1 },
2292 { .center_freq = 2417, .hw_value = 2 },
2293 { .center_freq = 2422, .hw_value = 3 },
2294 { .center_freq = 2427, .hw_value = 4 },
2295 { .center_freq = 2432, .hw_value = 5 },
2296 { .center_freq = 2437, .hw_value = 6 },
2297 { .center_freq = 2442, .hw_value = 7 },
2298 { .center_freq = 2447, .hw_value = 8 },
2299 { .center_freq = 2452, .hw_value = 9 },
2300 { .center_freq = 2457, .hw_value = 10 },
2301 { .center_freq = 2462, .hw_value = 11 },
2302 { .center_freq = 2467, .hw_value = 12 },
2303 { .center_freq = 2472, .hw_value = 13 },
2304 { .center_freq = 2484, .hw_value = 14 }
2305};
2306
2307static struct ieee80211_supported_band at76_supported_band = {
2308 .channels = at76_channels,
2309 .n_channels = ARRAY_SIZE(at76_channels),
2310 .bitrates = at76_rates,
2311 .n_bitrates = ARRAY_SIZE(at76_rates),
2312};
2313
2314/* Register network device and initialize the hardware */
2315static int at76_init_new_device(struct at76_priv *priv,
2316 struct usb_interface *interface)
2317{
2318 struct wiphy *wiphy;
2319 size_t len;
2320 int ret;
2321
2322 /* set up the endpoint information */
2323 /* check out the endpoints */
2324
2325 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2326 interface->cur_altsetting->desc.bNumEndpoints);
2327
2328 ret = at76_alloc_urbs(priv, interface);
2329 if (ret < 0)
2330 goto exit;
2331
2332 /* MAC address */
2333 ret = at76_get_hw_config(priv);
2334 if (ret < 0) {
2335 dev_err(&interface->dev, "cannot get MAC address\n");
2336 goto exit;
2337 }
2338
2339 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2340
2341 priv->channel = DEF_CHANNEL;
2342 priv->iw_mode = IW_MODE_INFRA;
2343 priv->rts_threshold = DEF_RTS_THRESHOLD;
2344 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2345 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2346 priv->txrate = TX_RATE_AUTO;
2347 priv->preamble_type = PREAMBLE_TYPE_LONG;
2348 priv->beacon_period = 100;
2349 priv->auth_mode = WLAN_AUTH_OPEN;
2350 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2351 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2352 priv->scan_mode = SCAN_TYPE_ACTIVE;
2353 priv->device_unplugged = 0;
2354
2355 /* mac80211 initialisation */
2356 wiphy = priv->hw->wiphy;
2357 priv->hw->wiphy->max_scan_ssids = 1;
2358 priv->hw->wiphy->max_scan_ie_len = 0;
2359 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2360 priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = &at76_supported_band;
2361 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
2362 ieee80211_hw_set(priv->hw, SIGNAL_UNSPEC);
2363 priv->hw->max_signal = 100;
2364
2365 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2366 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2367
2368 len = sizeof(wiphy->fw_version);
2369 snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2370 priv->fw_version.major, priv->fw_version.minor,
2371 priv->fw_version.patch, priv->fw_version.build);
2372
2373 wiphy->hw_version = priv->board_type;
2374
2375 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2376
2377 ret = ieee80211_register_hw(priv->hw);
2378 if (ret) {
2379 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2380 ret);
2381 goto exit;
2382 }
2383
2384 priv->mac80211_registered = 1;
2385
2386 wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2387 dev_name(&interface->dev), priv->mac_addr,
2388 priv->fw_version.major, priv->fw_version.minor,
2389 priv->fw_version.patch, priv->fw_version.build);
2390 wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2391 priv->regulatory_domain, priv->domain->name);
2392
2393exit:
2394 return ret;
2395}
2396
2397static void at76_delete_device(struct at76_priv *priv)
2398{
2399 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2400
2401 /* The device is gone, don't bother turning it off */
2402 priv->device_unplugged = 1;
2403
2404 tasklet_kill(&priv->rx_tasklet);
2405
2406 if (priv->mac80211_registered)
2407 ieee80211_unregister_hw(priv->hw);
2408
2409 if (priv->tx_urb) {
2410 usb_kill_urb(priv->tx_urb);
2411 usb_free_urb(priv->tx_urb);
2412 }
2413 if (priv->rx_urb) {
2414 usb_kill_urb(priv->rx_urb);
2415 usb_free_urb(priv->rx_urb);
2416 }
2417
2418 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2419
2420 kfree(priv->bulk_out_buffer);
2421
2422 del_timer_sync(&ledtrig_tx_timer);
2423
2424 kfree_skb(priv->rx_skb);
2425
2426 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2427 __func__);
2428 ieee80211_free_hw(priv->hw);
2429
2430 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2431}
2432
2433static int at76_probe(struct usb_interface *interface,
2434 const struct usb_device_id *id)
2435{
2436 int ret;
2437 struct at76_priv *priv;
2438 struct fwentry *fwe;
2439 struct usb_device *udev;
2440 int op_mode;
2441 int need_ext_fw = 0;
2442 struct mib_fw_version *fwv = NULL;
2443 int board_type = (int)id->driver_info;
2444
2445 udev = usb_get_dev(interface_to_usbdev(interface));
2446
2447 fwv = kmalloc(sizeof(*fwv), GFP_KERNEL);
2448 if (!fwv) {
2449 ret = -ENOMEM;
2450 goto exit;
2451 }
2452
2453 /* Load firmware into kernel memory */
2454 fwe = at76_load_firmware(udev, board_type);
2455 if (!fwe) {
2456 ret = -ENOENT;
2457 goto exit;
2458 }
2459
2460 op_mode = at76_get_op_mode(udev);
2461
2462 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2463
2464 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2465 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2466
2467 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2468 dev_err(&interface->dev,
2469 "cannot handle a device in HW_CONFIG_MODE\n");
2470 ret = -EBUSY;
2471 goto exit;
2472 }
2473
2474 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2475 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2476 /* download internal firmware part */
2477 dev_printk(KERN_DEBUG, &interface->dev,
2478 "downloading internal firmware\n");
2479 ret = at76_load_internal_fw(udev, fwe);
2480 if (ret < 0) {
2481 dev_err(&interface->dev,
2482 "error %d downloading internal firmware\n",
2483 ret);
2484 }
2485 goto exit;
2486 }
2487
2488 /* Internal firmware already inside the device. Get firmware
2489 * version to test if external firmware is loaded.
2490 * This works only for newer firmware, e.g. the Intersil 0.90.x
2491 * says "control timeout on ep0in" and subsequent
2492 * at76_get_op_mode() fail too :-( */
2493
2494 /* if version >= 0.100.x.y or device with built-in flash we can
2495 * query the device for the fw version */
2496 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2497 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2498 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2499 if (ret < 0 || (fwv->major | fwv->minor) == 0)
2500 need_ext_fw = 1;
2501 } else
2502 /* No way to check firmware version, reload to be sure */
2503 need_ext_fw = 1;
2504
2505 if (need_ext_fw) {
2506 dev_printk(KERN_DEBUG, &interface->dev,
2507 "downloading external firmware\n");
2508
2509 ret = at76_load_external_fw(udev, fwe);
2510 if (ret < 0)
2511 goto exit;
2512
2513 /* Re-check firmware version */
2514 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2515 if (ret < 0) {
2516 dev_err(&interface->dev,
2517 "error %d getting firmware version\n", ret);
2518 goto exit;
2519 }
2520 }
2521
2522 priv = at76_alloc_new_device(udev);
2523 if (!priv) {
2524 ret = -ENOMEM;
2525 goto exit;
2526 }
2527
2528 usb_set_intfdata(interface, priv);
2529
2530 memcpy(&priv->fw_version, fwv, sizeof(struct mib_fw_version));
2531 priv->board_type = board_type;
2532
2533 ret = at76_init_new_device(priv, interface);
2534 if (ret < 0)
2535 at76_delete_device(priv);
2536
2537exit:
2538 kfree(fwv);
2539 if (ret < 0)
2540 usb_put_dev(udev);
2541 return ret;
2542}
2543
2544static void at76_disconnect(struct usb_interface *interface)
2545{
2546 struct at76_priv *priv;
2547
2548 priv = usb_get_intfdata(interface);
2549 usb_set_intfdata(interface, NULL);
2550
2551 /* Disconnect after loading internal firmware */
2552 if (!priv)
2553 return;
2554
2555 wiphy_info(priv->hw->wiphy, "disconnecting\n");
2556 at76_delete_device(priv);
2557 usb_put_dev(priv->udev);
2558 dev_info(&interface->dev, "disconnected\n");
2559}
2560
2561/* Structure for registering this driver with the USB subsystem */
2562static struct usb_driver at76_driver = {
2563 .name = DRIVER_NAME,
2564 .probe = at76_probe,
2565 .disconnect = at76_disconnect,
2566 .id_table = dev_table,
2567 .disable_hub_initiated_lpm = 1,
2568};
2569
2570static int __init at76_mod_init(void)
2571{
2572 int result;
2573
2574 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2575
2576 /* register this driver with the USB subsystem */
2577 result = usb_register(&at76_driver);
2578 if (result < 0)
2579 printk(KERN_ERR DRIVER_NAME
2580 ": usb_register failed (status %d)\n", result);
2581 else
2582 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2583 return result;
2584}
2585
2586static void __exit at76_mod_exit(void)
2587{
2588 int i;
2589
2590 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2591 usb_deregister(&at76_driver);
2592 for (i = 0; i < ARRAY_SIZE(firmwares); i++)
2593 release_firmware(firmwares[i].fw);
2594 led_trigger_unregister_simple(ledtrig_tx);
2595}
2596
2597module_param_named(debug, at76_debug, uint, 0600);
2598MODULE_PARM_DESC(debug, "Debugging level");
2599
2600module_init(at76_mod_init);
2601module_exit(at76_mod_exit);
2602
2603MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2604MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2605MODULE_AUTHOR("Alex <alex@foogod.com>");
2606MODULE_AUTHOR("Nick Jones");
2607MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2608MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2609MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2610MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2611MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
2612MODULE_DESCRIPTION(DRIVER_DESC);
2613MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * at76c503/at76c505 USB driver
4 *
5 * Copyright (c) 2002 - 2003 Oliver Kurth
6 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
7 * Copyright (c) 2004 Nick Jones
8 * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
9 * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
10 * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
11 * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
12 *
13 * This file is part of the Berlios driver for WLAN USB devices based on the
14 * Atmel AT76C503A/505/505A.
15 *
16 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
17 *
18 * TODO list is at the wiki:
19 *
20 * https://wireless.wiki.kernel.org/en/users/Drivers/at76c50x-usb#TODO
21 */
22
23#include <linux/init.h>
24#include <linux/kernel.h>
25#include <linux/sched.h>
26#include <linux/errno.h>
27#include <linux/slab.h>
28#include <linux/module.h>
29#include <linux/spinlock.h>
30#include <linux/list.h>
31#include <linux/usb.h>
32#include <linux/netdevice.h>
33#include <linux/if_arp.h>
34#include <linux/etherdevice.h>
35#include <linux/ethtool.h>
36#include <linux/wireless.h>
37#include <net/iw_handler.h>
38#include <net/ieee80211_radiotap.h>
39#include <linux/firmware.h>
40#include <linux/leds.h>
41#include <net/mac80211.h>
42
43#include "at76c50x-usb.h"
44
45/* Version information */
46#define DRIVER_NAME "at76c50x-usb"
47#define DRIVER_VERSION "0.17"
48#define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
49
50/* at76_debug bits */
51#define DBG_PROGRESS 0x00000001 /* authentication/accociation */
52#define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */
53#define DBG_IOCTL 0x00000004 /* ioctl calls / settings */
54#define DBG_MAC_STATE 0x00000008 /* MAC state transitions */
55#define DBG_TX_DATA 0x00000010 /* tx header */
56#define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */
57#define DBG_TX_MGMT 0x00000040 /* tx management */
58#define DBG_RX_DATA 0x00000080 /* rx data header */
59#define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */
60#define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */
61#define DBG_RX_BEACON 0x00000400 /* rx beacon */
62#define DBG_RX_CTRL 0x00000800 /* rx control */
63#define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */
64#define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */
65#define DBG_DEVSTART 0x00004000 /* fw download, device start */
66#define DBG_URB 0x00008000 /* rx urb status, ... */
67#define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */
68#define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */
69#define DBG_PM 0x00040000 /* power management settings */
70#define DBG_BSS_MATCH 0x00080000 /* BSS match failures */
71#define DBG_PARAMS 0x00100000 /* show configured parameters */
72#define DBG_WAIT_COMPLETE 0x00200000 /* command completion */
73#define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */
74#define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */
75#define DBG_MONITOR_MODE 0x01000000 /* monitor mode */
76#define DBG_MIB 0x02000000 /* dump all MIBs on startup */
77#define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */
78#define DBG_WE_EVENTS 0x08000000 /* dump wireless events */
79#define DBG_FW 0x10000000 /* firmware download */
80#define DBG_DFU 0x20000000 /* device firmware upgrade */
81#define DBG_CMD 0x40000000
82#define DBG_MAC80211 0x80000000
83
84#define DBG_DEFAULTS 0
85
86/* Use our own dbg macro */
87#define at76_dbg(bits, format, arg...) \
88do { \
89 if (at76_debug & (bits)) \
90 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
91} while (0)
92
93#define at76_dbg_dump(bits, buf, len, format, arg...) \
94do { \
95 if (at76_debug & (bits)) { \
96 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
97 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
98 } \
99} while (0)
100
101static uint at76_debug = DBG_DEFAULTS;
102
103/* Protect against concurrent firmware loading and parsing */
104static struct mutex fw_mutex;
105
106static struct fwentry firmwares[] = {
107 [0] = { "" },
108 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
109 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
110 [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
111 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
112 [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
113 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
114 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
115 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
116};
117MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
118MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
119MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
120MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
121MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
122MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
123MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
124MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
125
126#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
127
128static const struct usb_device_id dev_table[] = {
129 /*
130 * at76c503-i3861
131 */
132 /* Generic AT76C503/3861 device */
133 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
134 /* Linksys WUSB11 v2.1/v2.6 */
135 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
136 /* Netgear MA101 rev. A */
137 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
138 /* Tekram U300C / Allnet ALL0193 */
139 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
140 /* HP HN210W J7801A */
141 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
142 /* Sitecom/Z-Com/Zyxel M4Y-750 */
143 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
144 /* Dynalink/Askey WLL013 (intersil) */
145 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
146 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
147 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
148 /* BenQ AWL300 */
149 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
150 /* Addtron AWU-120, Compex WLU11 */
151 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
152 /* Intel AP310 AnyPoint II USB */
153 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
154 /* Dynalink L11U */
155 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
156 /* Arescom WL-210, FCC id 07J-GL2411USB */
157 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
158 /* I-O DATA WN-B11/USB */
159 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
160 /* BT Voyager 1010 */
161 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
162 /*
163 * at76c503-i3863
164 */
165 /* Generic AT76C503/3863 device */
166 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
167 /* Samsung SWL-2100U */
168 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
169 /*
170 * at76c503-rfmd
171 */
172 /* Generic AT76C503/RFMD device */
173 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
174 /* Dynalink/Askey WLL013 (rfmd) */
175 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
176 /* Linksys WUSB11 v2.6 */
177 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
178 /* Network Everywhere NWU11B */
179 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
180 /* Netgear MA101 rev. B */
181 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
182 /* D-Link DWL-120 rev. E */
183 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
184 /* Actiontec 802UAT1, HWU01150-01UK */
185 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
186 /* AirVast W-Buddie WN210 */
187 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
188 /* Dick Smith Electronics XH1153 802.11b USB adapter */
189 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
190 /* CNet CNUSB611 */
191 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
192 /* FiberLine FL-WL200U */
193 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
194 /* BenQ AWL400 USB stick */
195 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
196 /* 3Com 3CRSHEW696 */
197 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
198 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
199 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
200 /* Belkin F5D6050, version 2 */
201 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
202 /* iBlitzz, BWU613 (not *B or *SB) */
203 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
204 /* Gigabyte GN-WLBM101 */
205 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
206 /* Planex GW-US11S */
207 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
208 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
209 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
210 /* Corega Wireless LAN USB-11 mini */
211 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
212 /* Corega Wireless LAN USB-11 mini2 */
213 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
214 /* Uniden PCW100 */
215 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
216 /*
217 * at76c503-rfmd-acc
218 */
219 /* SMC2664W */
220 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
221 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
222 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
223 /*
224 * at76c505-rfmd
225 */
226 /* Generic AT76C505/RFMD */
227 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
228 /*
229 * at76c505-rfmd2958
230 */
231 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
232 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
233 /* Fiberline FL-WL240U */
234 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
235 /* CNet CNUSB-611G */
236 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
237 /* Linksys WUSB11 v2.8 */
238 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
239 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
240 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
241 /* Corega WLAN USB Stick 11 */
242 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
243 /* Microstar MSI Box MS6978 */
244 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
245 /*
246 * at76c505a-rfmd2958
247 */
248 /* Generic AT76C505A device */
249 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
250 /* Generic AT76C505AS device */
251 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
252 /* Siemens Gigaset USB WLAN Adapter 11 */
253 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
254 /* OQO Model 01+ Internal Wi-Fi */
255 { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
256 /*
257 * at76c505amx-rfmd
258 */
259 /* Generic AT76C505AMX device */
260 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
261 { }
262};
263
264MODULE_DEVICE_TABLE(usb, dev_table);
265
266/* Supported rates of this hardware, bit 7 marks basic rates */
267static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
268
269static const char *const preambles[] = { "long", "short", "auto" };
270
271/* Firmware download */
272/* DFU states */
273#define STATE_IDLE 0x00
274#define STATE_DETACH 0x01
275#define STATE_DFU_IDLE 0x02
276#define STATE_DFU_DOWNLOAD_SYNC 0x03
277#define STATE_DFU_DOWNLOAD_BUSY 0x04
278#define STATE_DFU_DOWNLOAD_IDLE 0x05
279#define STATE_DFU_MANIFEST_SYNC 0x06
280#define STATE_DFU_MANIFEST 0x07
281#define STATE_DFU_MANIFEST_WAIT_RESET 0x08
282#define STATE_DFU_UPLOAD_IDLE 0x09
283#define STATE_DFU_ERROR 0x0a
284
285/* DFU commands */
286#define DFU_DETACH 0
287#define DFU_DNLOAD 1
288#define DFU_UPLOAD 2
289#define DFU_GETSTATUS 3
290#define DFU_CLRSTATUS 4
291#define DFU_GETSTATE 5
292#define DFU_ABORT 6
293
294#define FW_BLOCK_SIZE 1024
295
296struct dfu_status {
297 unsigned char status;
298 unsigned char poll_timeout[3];
299 unsigned char state;
300 unsigned char string;
301} __packed;
302
303static inline int at76_is_intersil(enum board_type board)
304{
305 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
306}
307
308static inline int at76_is_503rfmd(enum board_type board)
309{
310 return (board == BOARD_503 || board == BOARD_503_ACC);
311}
312
313static inline int at76_is_505a(enum board_type board)
314{
315 return (board == BOARD_505A || board == BOARD_505AMX);
316}
317
318/* Load a block of the first (internal) part of the firmware */
319static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
320 void *block, int size)
321{
322 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
323 USB_TYPE_CLASS | USB_DIR_OUT |
324 USB_RECIP_INTERFACE, blockno, 0, block, size,
325 USB_CTRL_GET_TIMEOUT);
326}
327
328static int at76_dfu_get_status(struct usb_device *udev,
329 struct dfu_status *status)
330{
331 int ret;
332
333 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
334 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
335 0, 0, status, sizeof(struct dfu_status),
336 USB_CTRL_GET_TIMEOUT);
337 return ret;
338}
339
340static int at76_dfu_get_state(struct usb_device *udev, u8 *state)
341{
342 int ret;
343
344 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
345 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
346 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
347 return ret;
348}
349
350/* Convert timeout from the DFU status to jiffies */
351static inline unsigned long at76_get_timeout(struct dfu_status *s)
352{
353 return msecs_to_jiffies((s->poll_timeout[2] << 16)
354 | (s->poll_timeout[1] << 8)
355 | (s->poll_timeout[0]));
356}
357
358/* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
359 * its value in jiffies in the MANIFEST_SYNC state. */
360static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
361 int manifest_sync_timeout)
362{
363 int ret = 0;
364 int need_dfu_state = 1;
365 int is_done = 0;
366 u32 dfu_timeout = 0;
367 int bsize = 0;
368 int blockno = 0;
369 struct dfu_status *dfu_stat_buf = NULL;
370 u8 *dfu_state = NULL;
371 u8 *block = NULL;
372
373 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
374 manifest_sync_timeout);
375
376 if (!size) {
377 dev_err(&udev->dev, "FW buffer length invalid!\n");
378 return -EINVAL;
379 }
380
381 dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL);
382 if (!dfu_stat_buf) {
383 ret = -ENOMEM;
384 goto exit;
385 }
386
387 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
388 if (!block) {
389 ret = -ENOMEM;
390 goto exit;
391 }
392
393 dfu_state = kmalloc(sizeof(u8), GFP_KERNEL);
394 if (!dfu_state) {
395 ret = -ENOMEM;
396 goto exit;
397 }
398 *dfu_state = 0;
399
400 do {
401 if (need_dfu_state) {
402 ret = at76_dfu_get_state(udev, dfu_state);
403 if (ret < 0) {
404 dev_err(&udev->dev,
405 "cannot get DFU state: %d\n", ret);
406 goto exit;
407 }
408 need_dfu_state = 0;
409 }
410
411 switch (*dfu_state) {
412 case STATE_DFU_DOWNLOAD_SYNC:
413 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
414 ret = at76_dfu_get_status(udev, dfu_stat_buf);
415 if (ret >= 0) {
416 *dfu_state = dfu_stat_buf->state;
417 dfu_timeout = at76_get_timeout(dfu_stat_buf);
418 need_dfu_state = 0;
419 } else
420 dev_err(&udev->dev,
421 "at76_dfu_get_status returned %d\n",
422 ret);
423 break;
424
425 case STATE_DFU_DOWNLOAD_BUSY:
426 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
427 need_dfu_state = 1;
428
429 at76_dbg(DBG_DFU, "DFU: Resetting device");
430 schedule_timeout_interruptible(dfu_timeout);
431 break;
432
433 case STATE_DFU_DOWNLOAD_IDLE:
434 at76_dbg(DBG_DFU, "DOWNLOAD...");
435 /* fall through */
436 case STATE_DFU_IDLE:
437 at76_dbg(DBG_DFU, "DFU IDLE");
438
439 bsize = min_t(int, size, FW_BLOCK_SIZE);
440 memcpy(block, buf, bsize);
441 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
442 "bsize = %4d, blockno = %2d", size, bsize,
443 blockno);
444 ret =
445 at76_load_int_fw_block(udev, blockno, block, bsize);
446 buf += bsize;
447 size -= bsize;
448 blockno++;
449
450 if (ret != bsize)
451 dev_err(&udev->dev,
452 "at76_load_int_fw_block returned %d\n",
453 ret);
454 need_dfu_state = 1;
455 break;
456
457 case STATE_DFU_MANIFEST_SYNC:
458 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
459
460 ret = at76_dfu_get_status(udev, dfu_stat_buf);
461 if (ret < 0)
462 break;
463
464 *dfu_state = dfu_stat_buf->state;
465 dfu_timeout = at76_get_timeout(dfu_stat_buf);
466 need_dfu_state = 0;
467
468 /* override the timeout from the status response,
469 needed for AT76C505A */
470 if (manifest_sync_timeout > 0)
471 dfu_timeout = manifest_sync_timeout;
472
473 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
474 schedule_timeout_interruptible(dfu_timeout);
475 break;
476
477 case STATE_DFU_MANIFEST:
478 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
479 is_done = 1;
480 break;
481
482 case STATE_DFU_MANIFEST_WAIT_RESET:
483 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
484 is_done = 1;
485 break;
486
487 case STATE_DFU_UPLOAD_IDLE:
488 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
489 break;
490
491 case STATE_DFU_ERROR:
492 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
493 ret = -EPIPE;
494 break;
495
496 default:
497 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", *dfu_state);
498 ret = -EINVAL;
499 break;
500 }
501 } while (!is_done && (ret >= 0));
502
503exit:
504 kfree(dfu_state);
505 kfree(block);
506 kfree(dfu_stat_buf);
507
508 if (ret >= 0)
509 ret = 0;
510
511 return ret;
512}
513
514/* LED trigger */
515static int tx_activity;
516static void at76_ledtrig_tx_timerfunc(struct timer_list *unused);
517static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc);
518DEFINE_LED_TRIGGER(ledtrig_tx);
519
520static void at76_ledtrig_tx_timerfunc(struct timer_list *unused)
521{
522 static int tx_lastactivity;
523
524 if (tx_lastactivity != tx_activity) {
525 tx_lastactivity = tx_activity;
526 led_trigger_event(ledtrig_tx, LED_FULL);
527 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
528 } else
529 led_trigger_event(ledtrig_tx, LED_OFF);
530}
531
532static void at76_ledtrig_tx_activity(void)
533{
534 tx_activity++;
535 if (!timer_pending(&ledtrig_tx_timer))
536 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
537}
538
539static int at76_remap(struct usb_device *udev)
540{
541 int ret;
542 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
543 USB_TYPE_VENDOR | USB_DIR_OUT |
544 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
545 USB_CTRL_GET_TIMEOUT);
546 if (ret < 0)
547 return ret;
548 return 0;
549}
550
551static int at76_get_op_mode(struct usb_device *udev)
552{
553 int ret;
554 u8 saved;
555 u8 *op_mode;
556
557 op_mode = kmalloc(1, GFP_NOIO);
558 if (!op_mode)
559 return -ENOMEM;
560 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
561 USB_TYPE_VENDOR | USB_DIR_IN |
562 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
563 USB_CTRL_GET_TIMEOUT);
564 saved = *op_mode;
565 kfree(op_mode);
566
567 if (ret < 0)
568 return ret;
569 else if (ret < 1)
570 return -EIO;
571 else
572 return saved;
573}
574
575/* Load a block of the second ("external") part of the firmware */
576static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
577 void *block, int size)
578{
579 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
580 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
581 0x0802, blockno, block, size,
582 USB_CTRL_GET_TIMEOUT);
583}
584
585static inline int at76_get_hw_cfg(struct usb_device *udev,
586 union at76_hwcfg *buf, int buf_size)
587{
588 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
589 USB_TYPE_VENDOR | USB_DIR_IN |
590 USB_RECIP_INTERFACE, 0x0a02, 0,
591 buf, buf_size, USB_CTRL_GET_TIMEOUT);
592}
593
594/* Intersil boards use a different "value" for GetHWConfig requests */
595static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
596 union at76_hwcfg *buf, int buf_size)
597{
598 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
599 USB_TYPE_VENDOR | USB_DIR_IN |
600 USB_RECIP_INTERFACE, 0x0902, 0,
601 buf, buf_size, USB_CTRL_GET_TIMEOUT);
602}
603
604/* Get the hardware configuration for the adapter and put it to the appropriate
605 * fields of 'priv' (the GetHWConfig request and interpretation of the result
606 * depends on the board type) */
607static int at76_get_hw_config(struct at76_priv *priv)
608{
609 int ret;
610 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
611
612 if (!hwcfg)
613 return -ENOMEM;
614
615 if (at76_is_intersil(priv->board_type)) {
616 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
617 sizeof(hwcfg->i));
618 if (ret < 0)
619 goto exit;
620 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
621 priv->regulatory_domain = hwcfg->i.regulatory_domain;
622 } else if (at76_is_503rfmd(priv->board_type)) {
623 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
624 if (ret < 0)
625 goto exit;
626 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
627 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
628 } else {
629 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
630 if (ret < 0)
631 goto exit;
632 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
633 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
634 }
635
636exit:
637 kfree(hwcfg);
638 if (ret < 0)
639 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",
640 ret);
641
642 return ret;
643}
644
645static struct reg_domain const *at76_get_reg_domain(u16 code)
646{
647 int i;
648 static struct reg_domain const fd_tab[] = {
649 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */
650 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
651 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */
652 { 0x31, "Spain", 0x600 }, /* ch 10-11 */
653 { 0x32, "France", 0x1e00 }, /* ch 10-13 */
654 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */
655 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */
656 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */
657 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */
658 };
659
660 /* Last entry is fallback for unknown domain code */
661 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
662 if (code == fd_tab[i].code)
663 break;
664
665 return &fd_tab[i];
666}
667
668static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
669 int buf_size)
670{
671 int ret;
672
673 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
674 USB_TYPE_VENDOR | USB_DIR_IN |
675 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
676 USB_CTRL_GET_TIMEOUT);
677 if (ret >= 0 && ret != buf_size)
678 return -EIO;
679 return ret;
680}
681
682/* Return positive number for status, negative for an error */
683static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
684{
685 u8 *stat_buf;
686 int ret;
687
688 stat_buf = kmalloc(40, GFP_NOIO);
689 if (!stat_buf)
690 return -ENOMEM;
691
692 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
693 USB_TYPE_VENDOR | USB_DIR_IN |
694 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
695 40, USB_CTRL_GET_TIMEOUT);
696 if (ret >= 0)
697 ret = stat_buf[5];
698 kfree(stat_buf);
699
700 return ret;
701}
702
703#define MAKE_CMD_CASE(c) case (c): return #c
704static const char *at76_get_cmd_string(u8 cmd_status)
705{
706 switch (cmd_status) {
707 MAKE_CMD_CASE(CMD_SET_MIB);
708 MAKE_CMD_CASE(CMD_GET_MIB);
709 MAKE_CMD_CASE(CMD_SCAN);
710 MAKE_CMD_CASE(CMD_JOIN);
711 MAKE_CMD_CASE(CMD_START_IBSS);
712 MAKE_CMD_CASE(CMD_RADIO_ON);
713 MAKE_CMD_CASE(CMD_RADIO_OFF);
714 MAKE_CMD_CASE(CMD_STARTUP);
715 }
716
717 return "UNKNOWN";
718}
719
720static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
721 int buf_size)
722{
723 int ret;
724 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
725 buf_size, GFP_KERNEL);
726
727 if (!cmd_buf)
728 return -ENOMEM;
729
730 cmd_buf->cmd = cmd;
731 cmd_buf->reserved = 0;
732 cmd_buf->size = cpu_to_le16(buf_size);
733 memcpy(cmd_buf->data, buf, buf_size);
734
735 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
736 "issuing command %s (0x%02x)",
737 at76_get_cmd_string(cmd), cmd);
738
739 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
740 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
741 0, 0, cmd_buf,
742 sizeof(struct at76_command) + buf_size,
743 USB_CTRL_GET_TIMEOUT);
744 kfree(cmd_buf);
745 return ret;
746}
747
748#define MAKE_CMD_STATUS_CASE(c) case (c): return #c
749static const char *at76_get_cmd_status_string(u8 cmd_status)
750{
751 switch (cmd_status) {
752 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
753 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
754 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
755 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
756 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
757 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
758 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
759 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
760 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
761 }
762
763 return "UNKNOWN";
764}
765
766/* Wait until the command is completed */
767static int at76_wait_completion(struct at76_priv *priv, int cmd)
768{
769 int status = 0;
770 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
771
772 do {
773 status = at76_get_cmd_status(priv->udev, cmd);
774 if (status < 0) {
775 wiphy_err(priv->hw->wiphy,
776 "at76_get_cmd_status failed: %d\n",
777 status);
778 break;
779 }
780
781 at76_dbg(DBG_WAIT_COMPLETE,
782 "%s: Waiting on cmd %d, status = %d (%s)",
783 wiphy_name(priv->hw->wiphy), cmd, status,
784 at76_get_cmd_status_string(status));
785
786 if (status != CMD_STATUS_IN_PROGRESS
787 && status != CMD_STATUS_IDLE)
788 break;
789
790 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
791 if (time_after(jiffies, timeout)) {
792 wiphy_err(priv->hw->wiphy,
793 "completion timeout for command %d\n", cmd);
794 status = -ETIMEDOUT;
795 break;
796 }
797 } while (1);
798
799 return status;
800}
801
802static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
803{
804 int ret;
805
806 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
807 offsetof(struct set_mib_buffer,
808 data) + buf->size);
809 if (ret < 0)
810 return ret;
811
812 ret = at76_wait_completion(priv, CMD_SET_MIB);
813 if (ret != CMD_STATUS_COMPLETE) {
814 wiphy_info(priv->hw->wiphy,
815 "set_mib: at76_wait_completion failed with %d\n",
816 ret);
817 ret = -EIO;
818 }
819
820 return ret;
821}
822
823/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
824static int at76_set_radio(struct at76_priv *priv, int enable)
825{
826 int ret;
827 int cmd;
828
829 if (priv->radio_on == enable)
830 return 0;
831
832 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
833
834 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
835 if (ret < 0)
836 wiphy_err(priv->hw->wiphy,
837 "at76_set_card_command(%d) failed: %d\n", cmd, ret);
838 else
839 ret = 1;
840
841 priv->radio_on = enable;
842 return ret;
843}
844
845/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
846static int at76_set_pm_mode(struct at76_priv *priv)
847{
848 int ret = 0;
849
850 priv->mib_buf.type = MIB_MAC_MGMT;
851 priv->mib_buf.size = 1;
852 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
853 priv->mib_buf.data.byte = priv->pm_mode;
854
855 ret = at76_set_mib(priv, &priv->mib_buf);
856 if (ret < 0)
857 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
858 ret);
859
860 return ret;
861}
862
863static int at76_set_preamble(struct at76_priv *priv, u8 type)
864{
865 int ret = 0;
866
867 priv->mib_buf.type = MIB_LOCAL;
868 priv->mib_buf.size = 1;
869 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
870 priv->mib_buf.data.byte = type;
871
872 ret = at76_set_mib(priv, &priv->mib_buf);
873 if (ret < 0)
874 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
875 ret);
876
877 return ret;
878}
879
880static int at76_set_frag(struct at76_priv *priv, u16 size)
881{
882 int ret = 0;
883
884 priv->mib_buf.type = MIB_MAC;
885 priv->mib_buf.size = 2;
886 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
887 priv->mib_buf.data.word = cpu_to_le16(size);
888
889 ret = at76_set_mib(priv, &priv->mib_buf);
890 if (ret < 0)
891 wiphy_err(priv->hw->wiphy,
892 "set_mib (frag threshold) failed: %d\n", ret);
893
894 return ret;
895}
896
897static int at76_set_rts(struct at76_priv *priv, u16 size)
898{
899 int ret = 0;
900
901 priv->mib_buf.type = MIB_MAC;
902 priv->mib_buf.size = 2;
903 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
904 priv->mib_buf.data.word = cpu_to_le16(size);
905
906 ret = at76_set_mib(priv, &priv->mib_buf);
907 if (ret < 0)
908 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
909
910 return ret;
911}
912
913static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
914{
915 int ret = 0;
916
917 priv->mib_buf.type = MIB_LOCAL;
918 priv->mib_buf.size = 1;
919 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
920 priv->mib_buf.data.byte = onoff;
921
922 ret = at76_set_mib(priv, &priv->mib_buf);
923 if (ret < 0)
924 wiphy_err(priv->hw->wiphy,
925 "set_mib (autorate fallback) failed: %d\n", ret);
926
927 return ret;
928}
929
930static void at76_dump_mib_mac_addr(struct at76_priv *priv)
931{
932 int i;
933 int ret;
934 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
935 GFP_KERNEL);
936
937 if (!m)
938 return;
939
940 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
941 sizeof(struct mib_mac_addr));
942 if (ret < 0) {
943 wiphy_err(priv->hw->wiphy,
944 "at76_get_mib (MAC_ADDR) failed: %d\n", ret);
945 goto exit;
946 }
947
948 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
949 wiphy_name(priv->hw->wiphy),
950 m->mac_addr, m->res[0], m->res[1]);
951 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
952 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
953 "status %d", wiphy_name(priv->hw->wiphy), i,
954 m->group_addr[i], m->group_addr_status[i]);
955exit:
956 kfree(m);
957}
958
959static void at76_dump_mib_mac_wep(struct at76_priv *priv)
960{
961 int i;
962 int ret;
963 int key_len;
964 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
965
966 if (!m)
967 return;
968
969 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
970 sizeof(struct mib_mac_wep));
971 if (ret < 0) {
972 wiphy_err(priv->hw->wiphy,
973 "at76_get_mib (MAC_WEP) failed: %d\n", ret);
974 goto exit;
975 }
976
977 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
978 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
979 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
980 m->privacy_invoked, m->wep_default_key_id,
981 m->wep_key_mapping_len, m->exclude_unencrypted,
982 le32_to_cpu(m->wep_icv_error_count),
983 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
984 m->wep_default_key_id);
985
986 key_len = (m->encryption_level == 1) ?
987 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
988
989 for (i = 0; i < WEP_KEYS; i++)
990 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD",
991 wiphy_name(priv->hw->wiphy), i,
992 key_len, m->wep_default_keyvalue[i]);
993exit:
994 kfree(m);
995}
996
997static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
998{
999 int ret;
1000 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1001 GFP_KERNEL);
1002
1003 if (!m)
1004 return;
1005
1006 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1007 sizeof(struct mib_mac_mgmt));
1008 if (ret < 0) {
1009 wiphy_err(priv->hw->wiphy,
1010 "at76_get_mib (MAC_MGMT) failed: %d\n", ret);
1011 goto exit;
1012 }
1013
1014 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1015 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1016 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1017 "current_bssid %pM current_essid %*phD current_bss_type %d "
1018 "pm_mode %d ibss_change %d res %d "
1019 "multi_domain_capability_implemented %d "
1020 "international_roaming %d country_string %.3s",
1021 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1022 le16_to_cpu(m->CFP_max_duration),
1023 le16_to_cpu(m->medium_occupancy_limit),
1024 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1025 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1026 m->CFP_period, m->current_bssid,
1027 IW_ESSID_MAX_SIZE, m->current_essid,
1028 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1029 m->res, m->multi_domain_capability_implemented,
1030 m->multi_domain_capability_enabled, m->country_string);
1031exit:
1032 kfree(m);
1033}
1034
1035static void at76_dump_mib_mac(struct at76_priv *priv)
1036{
1037 int ret;
1038 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1039
1040 if (!m)
1041 return;
1042
1043 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1044 if (ret < 0) {
1045 wiphy_err(priv->hw->wiphy,
1046 "at76_get_mib (MAC) failed: %d\n", ret);
1047 goto exit;
1048 }
1049
1050 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1051 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1052 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1053 "scan_type %d scan_channel %d probe_delay %u "
1054 "min_channel_time %d max_channel_time %d listen_int %d "
1055 "desired_ssid %*phD desired_bssid %pM desired_bsstype %d",
1056 wiphy_name(priv->hw->wiphy),
1057 le32_to_cpu(m->max_tx_msdu_lifetime),
1058 le32_to_cpu(m->max_rx_lifetime),
1059 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1060 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1061 m->short_retry_time, m->long_retry_time, m->scan_type,
1062 m->scan_channel, le16_to_cpu(m->probe_delay),
1063 le16_to_cpu(m->min_channel_time),
1064 le16_to_cpu(m->max_channel_time),
1065 le16_to_cpu(m->listen_interval),
1066 IW_ESSID_MAX_SIZE, m->desired_ssid,
1067 m->desired_bssid, m->desired_bsstype);
1068exit:
1069 kfree(m);
1070}
1071
1072static void at76_dump_mib_phy(struct at76_priv *priv)
1073{
1074 int ret;
1075 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1076
1077 if (!m)
1078 return;
1079
1080 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1081 if (ret < 0) {
1082 wiphy_err(priv->hw->wiphy,
1083 "at76_get_mib (PHY) failed: %d\n", ret);
1084 goto exit;
1085 }
1086
1087 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1088 "sifs_time %d preamble_length %d plcp_header_length %d "
1089 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1090 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1091 "phy_type %d current_reg_domain %d",
1092 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1093 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1094 le16_to_cpu(m->preamble_length),
1095 le16_to_cpu(m->plcp_header_length),
1096 le16_to_cpu(m->mpdu_max_length),
1097 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1098 m->operation_rate_set[1], m->operation_rate_set[2],
1099 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1100 m->phy_type, m->current_reg_domain);
1101exit:
1102 kfree(m);
1103}
1104
1105static void at76_dump_mib_local(struct at76_priv *priv)
1106{
1107 int ret;
1108 struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL);
1109
1110 if (!m)
1111 return;
1112
1113 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m));
1114 if (ret < 0) {
1115 wiphy_err(priv->hw->wiphy,
1116 "at76_get_mib (LOCAL) failed: %d\n", ret);
1117 goto exit;
1118 }
1119
1120 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1121 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1122 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1123 m->beacon_enable,
1124 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1125 m->preamble_type);
1126exit:
1127 kfree(m);
1128}
1129
1130static void at76_dump_mib_mdomain(struct at76_priv *priv)
1131{
1132 int ret;
1133 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1134
1135 if (!m)
1136 return;
1137
1138 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1139 sizeof(struct mib_mdomain));
1140 if (ret < 0) {
1141 wiphy_err(priv->hw->wiphy,
1142 "at76_get_mib (MDOMAIN) failed: %d\n", ret);
1143 goto exit;
1144 }
1145
1146 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD",
1147 wiphy_name(priv->hw->wiphy),
1148 (int)sizeof(m->channel_list), m->channel_list);
1149
1150 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD",
1151 wiphy_name(priv->hw->wiphy),
1152 (int)sizeof(m->tx_powerlevel), m->tx_powerlevel);
1153exit:
1154 kfree(m);
1155}
1156
1157/* Enable monitor mode */
1158static int at76_start_monitor(struct at76_priv *priv)
1159{
1160 struct at76_req_scan scan;
1161 int ret;
1162
1163 memset(&scan, 0, sizeof(struct at76_req_scan));
1164 eth_broadcast_addr(scan.bssid);
1165
1166 scan.channel = priv->channel;
1167 scan.scan_type = SCAN_TYPE_PASSIVE;
1168 scan.international_scan = 0;
1169 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1170 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1171 scan.probe_delay = cpu_to_le16(0);
1172
1173 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1174 if (ret >= 0)
1175 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1176
1177 return ret;
1178}
1179
1180/* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1181 likely to compensate a flaw in the AT76C503A USB part ... */
1182static inline int at76_calc_padding(int wlen)
1183{
1184 /* add the USB TX header */
1185 wlen += AT76_TX_HDRLEN;
1186
1187 wlen = wlen % 64;
1188
1189 if (wlen < 50)
1190 return 50 - wlen;
1191
1192 if (wlen >= 61)
1193 return 64 + 50 - wlen;
1194
1195 return 0;
1196}
1197
1198static void at76_rx_callback(struct urb *urb)
1199{
1200 struct at76_priv *priv = urb->context;
1201
1202 priv->rx_tasklet.data = (unsigned long)urb;
1203 tasklet_schedule(&priv->rx_tasklet);
1204}
1205
1206static int at76_submit_rx_urb(struct at76_priv *priv)
1207{
1208 int ret;
1209 int size;
1210 struct sk_buff *skb = priv->rx_skb;
1211
1212 if (!priv->rx_urb) {
1213 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n",
1214 __func__);
1215 return -EFAULT;
1216 }
1217
1218 if (!skb) {
1219 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1220 if (!skb) {
1221 wiphy_err(priv->hw->wiphy,
1222 "cannot allocate rx skbuff\n");
1223 ret = -ENOMEM;
1224 goto exit;
1225 }
1226 priv->rx_skb = skb;
1227 } else {
1228 skb_push(skb, skb_headroom(skb));
1229 skb_trim(skb, 0);
1230 }
1231
1232 size = skb_tailroom(skb);
1233 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1234 skb_put(skb, size), size, at76_rx_callback, priv);
1235 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1236 if (ret < 0) {
1237 if (ret == -ENODEV)
1238 at76_dbg(DBG_DEVSTART,
1239 "usb_submit_urb returned -ENODEV");
1240 else
1241 wiphy_err(priv->hw->wiphy,
1242 "rx, usb_submit_urb failed: %d\n", ret);
1243 }
1244
1245exit:
1246 if (ret < 0 && ret != -ENODEV)
1247 wiphy_err(priv->hw->wiphy,
1248 "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1249
1250 return ret;
1251}
1252
1253/* Download external firmware */
1254static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1255{
1256 int ret;
1257 int op_mode;
1258 int blockno = 0;
1259 int bsize;
1260 u8 *block;
1261 u8 *buf = fwe->extfw;
1262 int size = fwe->extfw_size;
1263
1264 if (!buf || !size)
1265 return -ENOENT;
1266
1267 op_mode = at76_get_op_mode(udev);
1268 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1269
1270 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1271 dev_err(&udev->dev, "unexpected opmode %d\n", op_mode);
1272 return -EINVAL;
1273 }
1274
1275 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1276 if (!block)
1277 return -ENOMEM;
1278
1279 at76_dbg(DBG_DEVSTART, "downloading external firmware");
1280
1281 /* for fw >= 0.100, the device needs an extra empty block */
1282 do {
1283 bsize = min_t(int, size, FW_BLOCK_SIZE);
1284 memcpy(block, buf, bsize);
1285 at76_dbg(DBG_DEVSTART,
1286 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1287 size, bsize, blockno);
1288 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1289 if (ret != bsize) {
1290 dev_err(&udev->dev,
1291 "loading %dth firmware block failed: %d\n",
1292 blockno, ret);
1293 ret = -EIO;
1294 goto exit;
1295 }
1296 buf += bsize;
1297 size -= bsize;
1298 blockno++;
1299 } while (bsize > 0);
1300
1301 if (at76_is_505a(fwe->board_type)) {
1302 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1303 schedule_timeout_interruptible(HZ / 5 + 1);
1304 }
1305
1306exit:
1307 kfree(block);
1308 if (ret < 0)
1309 dev_err(&udev->dev,
1310 "downloading external firmware failed: %d\n", ret);
1311 return ret;
1312}
1313
1314/* Download internal firmware */
1315static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1316{
1317 int ret;
1318 int need_remap = !at76_is_505a(fwe->board_type);
1319
1320 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1321 need_remap ? 0 : 2 * HZ);
1322
1323 if (ret < 0) {
1324 dev_err(&udev->dev,
1325 "downloading internal fw failed with %d\n", ret);
1326 goto exit;
1327 }
1328
1329 at76_dbg(DBG_DEVSTART, "sending REMAP");
1330
1331 /* no REMAP for 505A (see SF driver) */
1332 if (need_remap) {
1333 ret = at76_remap(udev);
1334 if (ret < 0) {
1335 dev_err(&udev->dev,
1336 "sending REMAP failed with %d\n", ret);
1337 goto exit;
1338 }
1339 }
1340
1341 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1342 schedule_timeout_interruptible(2 * HZ + 1);
1343 usb_reset_device(udev);
1344
1345exit:
1346 return ret;
1347}
1348
1349static int at76_startup_device(struct at76_priv *priv)
1350{
1351 struct at76_card_config *ccfg = &priv->card_config;
1352 int ret;
1353
1354 at76_dbg(DBG_PARAMS,
1355 "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d "
1356 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1357 priv->essid, IW_ESSID_MAX_SIZE, priv->essid,
1358 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1359 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1360 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1361 at76_dbg(DBG_PARAMS,
1362 "%s param: preamble %s rts %d retry %d frag %d "
1363 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1364 preambles[priv->preamble_type], priv->rts_threshold,
1365 priv->short_retry_limit, priv->frag_threshold,
1366 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1367 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1368 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1369 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1370 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1371 at76_dbg(DBG_PARAMS,
1372 "%s param: pm_mode %d pm_period %d auth_mode %s "
1373 "scan_times %d %d scan_mode %s",
1374 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1375 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1376 priv->scan_min_time, priv->scan_max_time,
1377 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1378
1379 memset(ccfg, 0, sizeof(struct at76_card_config));
1380 ccfg->promiscuous_mode = 0;
1381 ccfg->short_retry_limit = priv->short_retry_limit;
1382
1383 if (priv->wep_enabled) {
1384 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1385 ccfg->encryption_type = 2;
1386 else
1387 ccfg->encryption_type = 1;
1388
1389 /* jal: always exclude unencrypted if WEP is active */
1390 ccfg->exclude_unencrypted = 1;
1391 } else {
1392 ccfg->exclude_unencrypted = 0;
1393 ccfg->encryption_type = 0;
1394 }
1395
1396 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1397 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1398
1399 memcpy(ccfg->basic_rate_set, hw_rates, 4);
1400 /* jal: really needed, we do a set_mib for autorate later ??? */
1401 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1402 ccfg->channel = priv->channel;
1403 ccfg->privacy_invoked = priv->wep_enabled;
1404 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1405 ccfg->ssid_len = priv->essid_size;
1406
1407 ccfg->wep_default_key_id = priv->wep_key_id;
1408 memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1409 sizeof(priv->wep_keys));
1410
1411 ccfg->short_preamble = priv->preamble_type;
1412 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1413
1414 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1415 sizeof(struct at76_card_config));
1416 if (ret < 0) {
1417 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1418 ret);
1419 return ret;
1420 }
1421
1422 at76_wait_completion(priv, CMD_STARTUP);
1423
1424 /* remove BSSID from previous run */
1425 eth_zero_addr(priv->bssid);
1426
1427 priv->scanning = false;
1428
1429 if (at76_set_radio(priv, 1) == 1)
1430 at76_wait_completion(priv, CMD_RADIO_ON);
1431
1432 ret = at76_set_preamble(priv, priv->preamble_type);
1433 if (ret < 0)
1434 return ret;
1435
1436 ret = at76_set_frag(priv, priv->frag_threshold);
1437 if (ret < 0)
1438 return ret;
1439
1440 ret = at76_set_rts(priv, priv->rts_threshold);
1441 if (ret < 0)
1442 return ret;
1443
1444 ret = at76_set_autorate_fallback(priv,
1445 priv->txrate == TX_RATE_AUTO ? 1 : 0);
1446 if (ret < 0)
1447 return ret;
1448
1449 ret = at76_set_pm_mode(priv);
1450 if (ret < 0)
1451 return ret;
1452
1453 if (at76_debug & DBG_MIB) {
1454 at76_dump_mib_mac(priv);
1455 at76_dump_mib_mac_addr(priv);
1456 at76_dump_mib_mac_mgmt(priv);
1457 at76_dump_mib_mac_wep(priv);
1458 at76_dump_mib_mdomain(priv);
1459 at76_dump_mib_phy(priv);
1460 at76_dump_mib_local(priv);
1461 }
1462
1463 return 0;
1464}
1465
1466/* Enable or disable promiscuous mode */
1467static void at76_work_set_promisc(struct work_struct *work)
1468{
1469 struct at76_priv *priv = container_of(work, struct at76_priv,
1470 work_set_promisc);
1471 int ret = 0;
1472
1473 if (priv->device_unplugged)
1474 return;
1475
1476 mutex_lock(&priv->mtx);
1477
1478 priv->mib_buf.type = MIB_LOCAL;
1479 priv->mib_buf.size = 1;
1480 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1481 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1482
1483 ret = at76_set_mib(priv, &priv->mib_buf);
1484 if (ret < 0)
1485 wiphy_err(priv->hw->wiphy,
1486 "set_mib (promiscuous_mode) failed: %d\n", ret);
1487
1488 mutex_unlock(&priv->mtx);
1489}
1490
1491/* Submit Rx urb back to the device */
1492static void at76_work_submit_rx(struct work_struct *work)
1493{
1494 struct at76_priv *priv = container_of(work, struct at76_priv,
1495 work_submit_rx);
1496
1497 mutex_lock(&priv->mtx);
1498 at76_submit_rx_urb(priv);
1499 mutex_unlock(&priv->mtx);
1500}
1501
1502/* This is a workaround to make scan working:
1503 * currently mac80211 does not process frames with no frequency
1504 * information.
1505 * However during scan the HW performs a sweep by itself, and we
1506 * are unable to know where the radio is actually tuned.
1507 * This function tries to do its best to guess this information..
1508 * During scan, If the current frame is a beacon or a probe response,
1509 * the channel information is extracted from it.
1510 * When not scanning, for other frames, or if it happens that for
1511 * whatever reason we fail to parse beacons and probe responses, this
1512 * function returns the priv->channel information, that should be correct
1513 * at least when we are not scanning.
1514 */
1515static inline int at76_guess_freq(struct at76_priv *priv)
1516{
1517 size_t el_off;
1518 const u8 *el;
1519 int channel = priv->channel;
1520 int len = priv->rx_skb->len;
1521 struct ieee80211_hdr *hdr = (void *)priv->rx_skb->data;
1522
1523 if (!priv->scanning)
1524 goto exit;
1525
1526 if (len < 24)
1527 goto exit;
1528
1529 if (ieee80211_is_probe_resp(hdr->frame_control)) {
1530 el_off = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1531 el = ((struct ieee80211_mgmt *)hdr)->u.probe_resp.variable;
1532 } else if (ieee80211_is_beacon(hdr->frame_control)) {
1533 el_off = offsetof(struct ieee80211_mgmt, u.beacon.variable);
1534 el = ((struct ieee80211_mgmt *)hdr)->u.beacon.variable;
1535 } else {
1536 goto exit;
1537 }
1538 len -= el_off;
1539
1540 el = cfg80211_find_ie(WLAN_EID_DS_PARAMS, el, len);
1541 if (el && el[1] > 0)
1542 channel = el[2];
1543
1544exit:
1545 return ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1546}
1547
1548static void at76_rx_tasklet(unsigned long param)
1549{
1550 struct urb *urb = (struct urb *)param;
1551 struct at76_priv *priv = urb->context;
1552 struct at76_rx_buffer *buf;
1553 struct ieee80211_rx_status rx_status = { 0 };
1554
1555 if (priv->device_unplugged) {
1556 at76_dbg(DBG_DEVSTART, "device unplugged");
1557 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1558 return;
1559 }
1560
1561 if (!priv->rx_skb || !priv->rx_skb->data)
1562 return;
1563
1564 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1565
1566 if (urb->status != 0) {
1567 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1568 at76_dbg(DBG_URB,
1569 "%s %s: - nonzero Rx bulk status received: %d",
1570 __func__, wiphy_name(priv->hw->wiphy),
1571 urb->status);
1572 return;
1573 }
1574
1575 at76_dbg(DBG_RX_ATMEL_HDR,
1576 "%s: rx frame: rate %d rssi %d noise %d link %d",
1577 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1578 buf->noise_level, buf->link_quality);
1579
1580 skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1581 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1582 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1583 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1584
1585 rx_status.signal = buf->rssi;
1586 rx_status.flag |= RX_FLAG_DECRYPTED;
1587 rx_status.flag |= RX_FLAG_IV_STRIPPED;
1588 rx_status.band = NL80211_BAND_2GHZ;
1589 rx_status.freq = at76_guess_freq(priv);
1590
1591 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1592 priv->rx_skb->len, priv->rx_skb->data_len);
1593 memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1594 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1595
1596 /* Use a new skb for the next receive */
1597 priv->rx_skb = NULL;
1598
1599 at76_submit_rx_urb(priv);
1600}
1601
1602/* Load firmware into kernel memory and parse it */
1603static struct fwentry *at76_load_firmware(struct usb_device *udev,
1604 enum board_type board_type)
1605{
1606 int ret;
1607 char *str;
1608 struct at76_fw_header *fwh;
1609 struct fwentry *fwe = &firmwares[board_type];
1610
1611 mutex_lock(&fw_mutex);
1612
1613 if (fwe->loaded) {
1614 at76_dbg(DBG_FW, "re-using previously loaded fw");
1615 goto exit;
1616 }
1617
1618 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1619 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1620 if (ret < 0) {
1621 dev_err(&udev->dev, "firmware %s not found!\n",
1622 fwe->fwname);
1623 dev_err(&udev->dev,
1624 "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n");
1625 goto exit;
1626 }
1627
1628 at76_dbg(DBG_FW, "got it.");
1629 fwh = (struct at76_fw_header *)(fwe->fw->data);
1630
1631 if (fwe->fw->size <= sizeof(*fwh)) {
1632 dev_err(&udev->dev,
1633 "firmware is too short (0x%zx)\n", fwe->fw->size);
1634 goto exit;
1635 }
1636
1637 /* CRC currently not checked */
1638 fwe->board_type = le32_to_cpu(fwh->board_type);
1639 if (fwe->board_type != board_type) {
1640 dev_err(&udev->dev,
1641 "board type mismatch, requested %u, got %u\n",
1642 board_type, fwe->board_type);
1643 goto exit;
1644 }
1645
1646 fwe->fw_version.major = fwh->major;
1647 fwe->fw_version.minor = fwh->minor;
1648 fwe->fw_version.patch = fwh->patch;
1649 fwe->fw_version.build = fwh->build;
1650
1651 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1652 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1653 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1654 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1655 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1656
1657 fwe->loaded = 1;
1658
1659 dev_printk(KERN_DEBUG, &udev->dev,
1660 "using firmware %s (version %d.%d.%d-%d)\n",
1661 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1662
1663 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1664 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1665 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1666 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1667
1668exit:
1669 mutex_unlock(&fw_mutex);
1670
1671 if (fwe->loaded)
1672 return fwe;
1673 else
1674 return NULL;
1675}
1676
1677static int at76_join(struct at76_priv *priv)
1678{
1679 struct at76_req_join join;
1680 int ret;
1681
1682 memset(&join, 0, sizeof(struct at76_req_join));
1683 memcpy(join.essid, priv->essid, priv->essid_size);
1684 join.essid_size = priv->essid_size;
1685 memcpy(join.bssid, priv->bssid, ETH_ALEN);
1686 join.bss_type = INFRASTRUCTURE_MODE;
1687 join.channel = priv->channel;
1688 join.timeout = cpu_to_le16(2000);
1689
1690 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1691 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1692 sizeof(struct at76_req_join));
1693
1694 if (ret < 0) {
1695 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1696 ret);
1697 return 0;
1698 }
1699
1700 ret = at76_wait_completion(priv, CMD_JOIN);
1701 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1702 if (ret != CMD_STATUS_COMPLETE) {
1703 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1704 ret);
1705 return 0;
1706 }
1707
1708 at76_set_pm_mode(priv);
1709
1710 return 0;
1711}
1712
1713static void at76_work_join_bssid(struct work_struct *work)
1714{
1715 struct at76_priv *priv = container_of(work, struct at76_priv,
1716 work_join_bssid);
1717
1718 if (priv->device_unplugged)
1719 return;
1720
1721 mutex_lock(&priv->mtx);
1722
1723 if (is_valid_ether_addr(priv->bssid))
1724 at76_join(priv);
1725
1726 mutex_unlock(&priv->mtx);
1727}
1728
1729static void at76_mac80211_tx_callback(struct urb *urb)
1730{
1731 struct at76_priv *priv = urb->context;
1732 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1733
1734 at76_dbg(DBG_MAC80211, "%s()", __func__);
1735
1736 switch (urb->status) {
1737 case 0:
1738 /* success */
1739 info->flags |= IEEE80211_TX_STAT_ACK;
1740 break;
1741 case -ENOENT:
1742 case -ECONNRESET:
1743 /* fail, urb has been unlinked */
1744 /* FIXME: add error message */
1745 break;
1746 default:
1747 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1748 __func__, urb->status);
1749 break;
1750 }
1751
1752 memset(&info->status, 0, sizeof(info->status));
1753
1754 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1755
1756 priv->tx_skb = NULL;
1757
1758 ieee80211_wake_queues(priv->hw);
1759}
1760
1761static void at76_mac80211_tx(struct ieee80211_hw *hw,
1762 struct ieee80211_tx_control *control,
1763 struct sk_buff *skb)
1764{
1765 struct at76_priv *priv = hw->priv;
1766 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1767 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1768 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1769 int padding, submit_len, ret;
1770
1771 at76_dbg(DBG_MAC80211, "%s()", __func__);
1772
1773 if (priv->tx_urb->status == -EINPROGRESS) {
1774 wiphy_err(priv->hw->wiphy,
1775 "%s called while tx urb is pending\n", __func__);
1776 dev_kfree_skb_any(skb);
1777 return;
1778 }
1779
1780 /* The following code lines are important when the device is going to
1781 * authenticate with a new bssid. The driver must send CMD_JOIN before
1782 * an authentication frame is transmitted. For this to succeed, the
1783 * correct bssid of the AP must be known. As mac80211 does not inform
1784 * drivers about the bssid prior to the authentication process the
1785 * following workaround is necessary. If the TX frame is an
1786 * authentication frame extract the bssid and send the CMD_JOIN. */
1787 if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1788 if (!ether_addr_equal_64bits(priv->bssid, mgmt->bssid)) {
1789 memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1790 ieee80211_queue_work(hw, &priv->work_join_bssid);
1791 dev_kfree_skb_any(skb);
1792 return;
1793 }
1794 }
1795
1796 ieee80211_stop_queues(hw);
1797
1798 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
1799
1800 WARN_ON(priv->tx_skb != NULL);
1801
1802 priv->tx_skb = skb;
1803 padding = at76_calc_padding(skb->len);
1804 submit_len = AT76_TX_HDRLEN + skb->len + padding;
1805
1806 /* setup 'Atmel' header */
1807 memset(tx_buffer, 0, sizeof(*tx_buffer));
1808 tx_buffer->padding = padding;
1809 tx_buffer->wlength = cpu_to_le16(skb->len);
1810 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1811 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1812 memcpy(tx_buffer->packet, skb->data, skb->len);
1813
1814 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1815 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1816 tx_buffer->padding, tx_buffer->tx_rate);
1817
1818 /* send stuff */
1819 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1820 "%s(): tx_buffer %d bytes:", __func__, submit_len);
1821 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1822 submit_len, at76_mac80211_tx_callback, priv);
1823 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1824 if (ret) {
1825 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1826 if (ret == -EINVAL)
1827 wiphy_err(priv->hw->wiphy,
1828 "-EINVAL: tx urb %p hcpriv %p complete %p\n",
1829 priv->tx_urb,
1830 priv->tx_urb->hcpriv, priv->tx_urb->complete);
1831 }
1832}
1833
1834static int at76_mac80211_start(struct ieee80211_hw *hw)
1835{
1836 struct at76_priv *priv = hw->priv;
1837 int ret;
1838
1839 at76_dbg(DBG_MAC80211, "%s()", __func__);
1840
1841 mutex_lock(&priv->mtx);
1842
1843 ret = at76_submit_rx_urb(priv);
1844 if (ret < 0) {
1845 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1846 ret);
1847 goto error;
1848 }
1849
1850 at76_startup_device(priv);
1851
1852 at76_start_monitor(priv);
1853
1854error:
1855 mutex_unlock(&priv->mtx);
1856
1857 return 0;
1858}
1859
1860static void at76_mac80211_stop(struct ieee80211_hw *hw)
1861{
1862 struct at76_priv *priv = hw->priv;
1863
1864 at76_dbg(DBG_MAC80211, "%s()", __func__);
1865
1866 cancel_delayed_work(&priv->dwork_hw_scan);
1867 cancel_work_sync(&priv->work_join_bssid);
1868 cancel_work_sync(&priv->work_set_promisc);
1869
1870 mutex_lock(&priv->mtx);
1871
1872 if (!priv->device_unplugged) {
1873 /* We are called by "ifconfig ethX down", not because the
1874 * device is not available anymore. */
1875 at76_set_radio(priv, 0);
1876
1877 /* We unlink rx_urb because at76_open() re-submits it.
1878 * If unplugged, at76_delete_device() takes care of it. */
1879 usb_kill_urb(priv->rx_urb);
1880 }
1881
1882 mutex_unlock(&priv->mtx);
1883}
1884
1885static int at76_add_interface(struct ieee80211_hw *hw,
1886 struct ieee80211_vif *vif)
1887{
1888 struct at76_priv *priv = hw->priv;
1889 int ret = 0;
1890
1891 at76_dbg(DBG_MAC80211, "%s()", __func__);
1892
1893 mutex_lock(&priv->mtx);
1894
1895 switch (vif->type) {
1896 case NL80211_IFTYPE_STATION:
1897 priv->iw_mode = IW_MODE_INFRA;
1898 break;
1899 default:
1900 ret = -EOPNOTSUPP;
1901 goto exit;
1902 }
1903
1904exit:
1905 mutex_unlock(&priv->mtx);
1906
1907 return ret;
1908}
1909
1910static void at76_remove_interface(struct ieee80211_hw *hw,
1911 struct ieee80211_vif *vif)
1912{
1913 at76_dbg(DBG_MAC80211, "%s()", __func__);
1914}
1915
1916static void at76_dwork_hw_scan(struct work_struct *work)
1917{
1918 struct at76_priv *priv = container_of(work, struct at76_priv,
1919 dwork_hw_scan.work);
1920 struct cfg80211_scan_info info = {
1921 .aborted = false,
1922 };
1923 int ret;
1924
1925 if (priv->device_unplugged)
1926 return;
1927
1928 mutex_lock(&priv->mtx);
1929
1930 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1931 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1932
1933 /* FIXME: add maximum time for scan to complete */
1934
1935 if (ret != CMD_STATUS_COMPLETE) {
1936 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1937 SCAN_POLL_INTERVAL);
1938 mutex_unlock(&priv->mtx);
1939 return;
1940 }
1941
1942 if (is_valid_ether_addr(priv->bssid))
1943 at76_join(priv);
1944
1945 priv->scanning = false;
1946
1947 mutex_unlock(&priv->mtx);
1948
1949 ieee80211_scan_completed(priv->hw, &info);
1950
1951 ieee80211_wake_queues(priv->hw);
1952}
1953
1954static int at76_hw_scan(struct ieee80211_hw *hw,
1955 struct ieee80211_vif *vif,
1956 struct ieee80211_scan_request *hw_req)
1957{
1958 struct cfg80211_scan_request *req = &hw_req->req;
1959 struct at76_priv *priv = hw->priv;
1960 struct at76_req_scan scan;
1961 u8 *ssid = NULL;
1962 int ret, len = 0;
1963
1964 at76_dbg(DBG_MAC80211, "%s():", __func__);
1965
1966 if (priv->device_unplugged)
1967 return 0;
1968
1969 mutex_lock(&priv->mtx);
1970
1971 ieee80211_stop_queues(hw);
1972
1973 memset(&scan, 0, sizeof(struct at76_req_scan));
1974 eth_broadcast_addr(scan.bssid);
1975
1976 if (req->n_ssids) {
1977 scan.scan_type = SCAN_TYPE_ACTIVE;
1978 ssid = req->ssids[0].ssid;
1979 len = req->ssids[0].ssid_len;
1980 } else {
1981 scan.scan_type = SCAN_TYPE_PASSIVE;
1982 }
1983
1984 if (len) {
1985 memcpy(scan.essid, ssid, len);
1986 scan.essid_size = len;
1987 }
1988
1989 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1990 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1991 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1992 scan.international_scan = 0;
1993
1994 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1995 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1996
1997 if (ret < 0) {
1998 wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret);
1999 goto exit;
2000 }
2001
2002 priv->scanning = true;
2003 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
2004 SCAN_POLL_INTERVAL);
2005
2006exit:
2007 mutex_unlock(&priv->mtx);
2008
2009 return 0;
2010}
2011
2012static int at76_config(struct ieee80211_hw *hw, u32 changed)
2013{
2014 struct at76_priv *priv = hw->priv;
2015
2016 at76_dbg(DBG_MAC80211, "%s(): channel %d",
2017 __func__, hw->conf.chandef.chan->hw_value);
2018 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
2019
2020 mutex_lock(&priv->mtx);
2021
2022 priv->channel = hw->conf.chandef.chan->hw_value;
2023
2024 if (is_valid_ether_addr(priv->bssid))
2025 at76_join(priv);
2026 else
2027 at76_start_monitor(priv);
2028
2029 mutex_unlock(&priv->mtx);
2030
2031 return 0;
2032}
2033
2034static void at76_bss_info_changed(struct ieee80211_hw *hw,
2035 struct ieee80211_vif *vif,
2036 struct ieee80211_bss_conf *conf,
2037 u32 changed)
2038{
2039 struct at76_priv *priv = hw->priv;
2040
2041 at76_dbg(DBG_MAC80211, "%s():", __func__);
2042
2043 if (!(changed & BSS_CHANGED_BSSID))
2044 return;
2045
2046 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2047
2048 mutex_lock(&priv->mtx);
2049
2050 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2051
2052 if (is_valid_ether_addr(priv->bssid))
2053 /* mac80211 is joining a bss */
2054 at76_join(priv);
2055
2056 mutex_unlock(&priv->mtx);
2057}
2058
2059/* must be atomic */
2060static void at76_configure_filter(struct ieee80211_hw *hw,
2061 unsigned int changed_flags,
2062 unsigned int *total_flags, u64 multicast)
2063{
2064 struct at76_priv *priv = hw->priv;
2065 int flags;
2066
2067 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2068 "total_flags=0x%08x",
2069 __func__, changed_flags, *total_flags);
2070
2071 flags = changed_flags & AT76_SUPPORTED_FILTERS;
2072 *total_flags = AT76_SUPPORTED_FILTERS;
2073
2074 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2075 if (priv->device_unplugged)
2076 return;
2077
2078 /* FIXME: access to priv->promisc should be protected with
2079 * priv->mtx, but it's impossible because this function needs to be
2080 * atomic */
2081
2082 if (flags && !priv->promisc) {
2083 /* mac80211 wants us to enable promiscuous mode */
2084 priv->promisc = 1;
2085 } else if (!flags && priv->promisc) {
2086 /* we need to disable promiscuous mode */
2087 priv->promisc = 0;
2088 } else
2089 return;
2090
2091 ieee80211_queue_work(hw, &priv->work_set_promisc);
2092}
2093
2094static int at76_set_wep(struct at76_priv *priv)
2095{
2096 int ret = 0;
2097 struct mib_mac_wep *mib_data = &priv->mib_buf.data.wep_mib;
2098
2099 priv->mib_buf.type = MIB_MAC_WEP;
2100 priv->mib_buf.size = sizeof(struct mib_mac_wep);
2101 priv->mib_buf.index = 0;
2102
2103 memset(mib_data, 0, sizeof(*mib_data));
2104
2105 if (priv->wep_enabled) {
2106 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
2107 mib_data->encryption_level = 2;
2108 else
2109 mib_data->encryption_level = 1;
2110
2111 /* always exclude unencrypted if WEP is active */
2112 mib_data->exclude_unencrypted = 1;
2113 } else {
2114 mib_data->exclude_unencrypted = 0;
2115 mib_data->encryption_level = 0;
2116 }
2117
2118 mib_data->privacy_invoked = priv->wep_enabled;
2119 mib_data->wep_default_key_id = priv->wep_key_id;
2120 memcpy(mib_data->wep_default_keyvalue, priv->wep_keys,
2121 sizeof(priv->wep_keys));
2122
2123 ret = at76_set_mib(priv, &priv->mib_buf);
2124
2125 if (ret < 0)
2126 wiphy_err(priv->hw->wiphy,
2127 "set_mib (wep) failed: %d\n", ret);
2128
2129 return ret;
2130}
2131
2132static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2133 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2134 struct ieee80211_key_conf *key)
2135{
2136 struct at76_priv *priv = hw->priv;
2137
2138 int i;
2139
2140 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d "
2141 "key->keylen %d",
2142 __func__, cmd, key->cipher, key->keyidx, key->keylen);
2143
2144 if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) &&
2145 (key->cipher != WLAN_CIPHER_SUITE_WEP104))
2146 return -EOPNOTSUPP;
2147
2148 key->hw_key_idx = key->keyidx;
2149
2150 mutex_lock(&priv->mtx);
2151
2152 switch (cmd) {
2153 case SET_KEY:
2154 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2155 priv->wep_keys_len[key->keyidx] = key->keylen;
2156
2157 /* FIXME: find out how to do this properly */
2158 priv->wep_key_id = key->keyidx;
2159
2160 break;
2161 case DISABLE_KEY:
2162 default:
2163 priv->wep_keys_len[key->keyidx] = 0;
2164 break;
2165 }
2166
2167 priv->wep_enabled = 0;
2168
2169 for (i = 0; i < WEP_KEYS; i++) {
2170 if (priv->wep_keys_len[i] != 0)
2171 priv->wep_enabled = 1;
2172 }
2173
2174 at76_set_wep(priv);
2175
2176 mutex_unlock(&priv->mtx);
2177
2178 return 0;
2179}
2180
2181static const struct ieee80211_ops at76_ops = {
2182 .tx = at76_mac80211_tx,
2183 .add_interface = at76_add_interface,
2184 .remove_interface = at76_remove_interface,
2185 .config = at76_config,
2186 .bss_info_changed = at76_bss_info_changed,
2187 .configure_filter = at76_configure_filter,
2188 .start = at76_mac80211_start,
2189 .stop = at76_mac80211_stop,
2190 .hw_scan = at76_hw_scan,
2191 .set_key = at76_set_key,
2192};
2193
2194/* Allocate network device and initialize private data */
2195static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2196{
2197 struct ieee80211_hw *hw;
2198 struct at76_priv *priv;
2199
2200 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2201 if (!hw) {
2202 printk(KERN_ERR DRIVER_NAME ": could not register"
2203 " ieee80211_hw\n");
2204 return NULL;
2205 }
2206
2207 priv = hw->priv;
2208 priv->hw = hw;
2209
2210 priv->udev = udev;
2211
2212 mutex_init(&priv->mtx);
2213 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2214 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2215 INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2216 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2217
2218 tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2219
2220 priv->pm_mode = AT76_PM_OFF;
2221 priv->pm_period = 0;
2222
2223 /* unit us */
2224
2225 return priv;
2226}
2227
2228static int at76_alloc_urbs(struct at76_priv *priv,
2229 struct usb_interface *interface)
2230{
2231 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2232 int i;
2233 int buffer_size;
2234 struct usb_host_interface *iface_desc;
2235
2236 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2237
2238 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2239 interface->cur_altsetting->desc.bNumEndpoints);
2240
2241 ep_in = NULL;
2242 ep_out = NULL;
2243 iface_desc = interface->cur_altsetting;
2244 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2245 endpoint = &iface_desc->endpoint[i].desc;
2246
2247 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2248 __func__, i, endpoint->bEndpointAddress,
2249 endpoint->bmAttributes);
2250
2251 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2252 ep_in = endpoint;
2253
2254 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2255 ep_out = endpoint;
2256 }
2257
2258 if (!ep_in || !ep_out) {
2259 dev_err(&interface->dev, "bulk endpoints missing\n");
2260 return -ENXIO;
2261 }
2262
2263 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2264 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2265
2266 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2267 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2268 if (!priv->rx_urb || !priv->tx_urb) {
2269 dev_err(&interface->dev, "cannot allocate URB\n");
2270 return -ENOMEM;
2271 }
2272
2273 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2274 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2275 if (!priv->bulk_out_buffer)
2276 return -ENOMEM;
2277
2278 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2279
2280 return 0;
2281}
2282
2283static struct ieee80211_rate at76_rates[] = {
2284 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2285 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2286 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2287 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2288};
2289
2290static struct ieee80211_channel at76_channels[] = {
2291 { .center_freq = 2412, .hw_value = 1 },
2292 { .center_freq = 2417, .hw_value = 2 },
2293 { .center_freq = 2422, .hw_value = 3 },
2294 { .center_freq = 2427, .hw_value = 4 },
2295 { .center_freq = 2432, .hw_value = 5 },
2296 { .center_freq = 2437, .hw_value = 6 },
2297 { .center_freq = 2442, .hw_value = 7 },
2298 { .center_freq = 2447, .hw_value = 8 },
2299 { .center_freq = 2452, .hw_value = 9 },
2300 { .center_freq = 2457, .hw_value = 10 },
2301 { .center_freq = 2462, .hw_value = 11 },
2302 { .center_freq = 2467, .hw_value = 12 },
2303 { .center_freq = 2472, .hw_value = 13 },
2304 { .center_freq = 2484, .hw_value = 14 }
2305};
2306
2307static struct ieee80211_supported_band at76_supported_band = {
2308 .channels = at76_channels,
2309 .n_channels = ARRAY_SIZE(at76_channels),
2310 .bitrates = at76_rates,
2311 .n_bitrates = ARRAY_SIZE(at76_rates),
2312};
2313
2314/* Register network device and initialize the hardware */
2315static int at76_init_new_device(struct at76_priv *priv,
2316 struct usb_interface *interface)
2317{
2318 struct wiphy *wiphy;
2319 size_t len;
2320 int ret;
2321
2322 /* set up the endpoint information */
2323 /* check out the endpoints */
2324
2325 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2326 interface->cur_altsetting->desc.bNumEndpoints);
2327
2328 ret = at76_alloc_urbs(priv, interface);
2329 if (ret < 0)
2330 goto exit;
2331
2332 /* MAC address */
2333 ret = at76_get_hw_config(priv);
2334 if (ret < 0) {
2335 dev_err(&interface->dev, "cannot get MAC address\n");
2336 goto exit;
2337 }
2338
2339 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2340
2341 priv->channel = DEF_CHANNEL;
2342 priv->iw_mode = IW_MODE_INFRA;
2343 priv->rts_threshold = DEF_RTS_THRESHOLD;
2344 priv->frag_threshold = DEF_FRAG_THRESHOLD;
2345 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2346 priv->txrate = TX_RATE_AUTO;
2347 priv->preamble_type = PREAMBLE_TYPE_LONG;
2348 priv->beacon_period = 100;
2349 priv->auth_mode = WLAN_AUTH_OPEN;
2350 priv->scan_min_time = DEF_SCAN_MIN_TIME;
2351 priv->scan_max_time = DEF_SCAN_MAX_TIME;
2352 priv->scan_mode = SCAN_TYPE_ACTIVE;
2353 priv->device_unplugged = 0;
2354
2355 /* mac80211 initialisation */
2356 wiphy = priv->hw->wiphy;
2357 priv->hw->wiphy->max_scan_ssids = 1;
2358 priv->hw->wiphy->max_scan_ie_len = 0;
2359 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2360 priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = &at76_supported_band;
2361 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
2362 ieee80211_hw_set(priv->hw, SIGNAL_UNSPEC);
2363 priv->hw->max_signal = 100;
2364
2365 SET_IEEE80211_DEV(priv->hw, &interface->dev);
2366 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2367
2368 len = sizeof(wiphy->fw_version);
2369 snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2370 priv->fw_version.major, priv->fw_version.minor,
2371 priv->fw_version.patch, priv->fw_version.build);
2372
2373 wiphy->hw_version = priv->board_type;
2374
2375 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2376
2377 ret = ieee80211_register_hw(priv->hw);
2378 if (ret) {
2379 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2380 ret);
2381 goto exit;
2382 }
2383
2384 priv->mac80211_registered = 1;
2385
2386 wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2387 dev_name(&interface->dev), priv->mac_addr,
2388 priv->fw_version.major, priv->fw_version.minor,
2389 priv->fw_version.patch, priv->fw_version.build);
2390 wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2391 priv->regulatory_domain, priv->domain->name);
2392
2393exit:
2394 return ret;
2395}
2396
2397static void at76_delete_device(struct at76_priv *priv)
2398{
2399 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2400
2401 /* The device is gone, don't bother turning it off */
2402 priv->device_unplugged = 1;
2403
2404 tasklet_kill(&priv->rx_tasklet);
2405
2406 if (priv->mac80211_registered)
2407 ieee80211_unregister_hw(priv->hw);
2408
2409 if (priv->tx_urb) {
2410 usb_kill_urb(priv->tx_urb);
2411 usb_free_urb(priv->tx_urb);
2412 }
2413 if (priv->rx_urb) {
2414 usb_kill_urb(priv->rx_urb);
2415 usb_free_urb(priv->rx_urb);
2416 }
2417
2418 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2419
2420 kfree(priv->bulk_out_buffer);
2421
2422 del_timer_sync(&ledtrig_tx_timer);
2423
2424 kfree_skb(priv->rx_skb);
2425
2426 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2427 __func__);
2428 ieee80211_free_hw(priv->hw);
2429
2430 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2431}
2432
2433static int at76_probe(struct usb_interface *interface,
2434 const struct usb_device_id *id)
2435{
2436 int ret;
2437 struct at76_priv *priv;
2438 struct fwentry *fwe;
2439 struct usb_device *udev;
2440 int op_mode;
2441 int need_ext_fw = 0;
2442 struct mib_fw_version *fwv = NULL;
2443 int board_type = (int)id->driver_info;
2444
2445 udev = usb_get_dev(interface_to_usbdev(interface));
2446
2447 fwv = kmalloc(sizeof(*fwv), GFP_KERNEL);
2448 if (!fwv) {
2449 ret = -ENOMEM;
2450 goto exit;
2451 }
2452
2453 /* Load firmware into kernel memory */
2454 fwe = at76_load_firmware(udev, board_type);
2455 if (!fwe) {
2456 ret = -ENOENT;
2457 goto exit;
2458 }
2459
2460 op_mode = at76_get_op_mode(udev);
2461
2462 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2463
2464 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2465 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2466
2467 if (op_mode == OPMODE_HW_CONFIG_MODE) {
2468 dev_err(&interface->dev,
2469 "cannot handle a device in HW_CONFIG_MODE\n");
2470 ret = -EBUSY;
2471 goto exit;
2472 }
2473
2474 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2475 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2476 /* download internal firmware part */
2477 dev_printk(KERN_DEBUG, &interface->dev,
2478 "downloading internal firmware\n");
2479 ret = at76_load_internal_fw(udev, fwe);
2480 if (ret < 0) {
2481 dev_err(&interface->dev,
2482 "error %d downloading internal firmware\n",
2483 ret);
2484 }
2485 goto exit;
2486 }
2487
2488 /* Internal firmware already inside the device. Get firmware
2489 * version to test if external firmware is loaded.
2490 * This works only for newer firmware, e.g. the Intersil 0.90.x
2491 * says "control timeout on ep0in" and subsequent
2492 * at76_get_op_mode() fail too :-( */
2493
2494 /* if version >= 0.100.x.y or device with built-in flash we can
2495 * query the device for the fw version */
2496 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2497 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2498 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2499 if (ret < 0 || (fwv->major | fwv->minor) == 0)
2500 need_ext_fw = 1;
2501 } else
2502 /* No way to check firmware version, reload to be sure */
2503 need_ext_fw = 1;
2504
2505 if (need_ext_fw) {
2506 dev_printk(KERN_DEBUG, &interface->dev,
2507 "downloading external firmware\n");
2508
2509 ret = at76_load_external_fw(udev, fwe);
2510 if (ret < 0)
2511 goto exit;
2512
2513 /* Re-check firmware version */
2514 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2515 if (ret < 0) {
2516 dev_err(&interface->dev,
2517 "error %d getting firmware version\n", ret);
2518 goto exit;
2519 }
2520 }
2521
2522 priv = at76_alloc_new_device(udev);
2523 if (!priv) {
2524 ret = -ENOMEM;
2525 goto exit;
2526 }
2527
2528 usb_set_intfdata(interface, priv);
2529
2530 memcpy(&priv->fw_version, fwv, sizeof(struct mib_fw_version));
2531 priv->board_type = board_type;
2532
2533 ret = at76_init_new_device(priv, interface);
2534 if (ret < 0)
2535 at76_delete_device(priv);
2536
2537exit:
2538 kfree(fwv);
2539 if (ret < 0)
2540 usb_put_dev(udev);
2541 return ret;
2542}
2543
2544static void at76_disconnect(struct usb_interface *interface)
2545{
2546 struct at76_priv *priv;
2547
2548 priv = usb_get_intfdata(interface);
2549 usb_set_intfdata(interface, NULL);
2550
2551 /* Disconnect after loading internal firmware */
2552 if (!priv)
2553 return;
2554
2555 wiphy_info(priv->hw->wiphy, "disconnecting\n");
2556 at76_delete_device(priv);
2557 usb_put_dev(priv->udev);
2558 dev_info(&interface->dev, "disconnected\n");
2559}
2560
2561/* Structure for registering this driver with the USB subsystem */
2562static struct usb_driver at76_driver = {
2563 .name = DRIVER_NAME,
2564 .probe = at76_probe,
2565 .disconnect = at76_disconnect,
2566 .id_table = dev_table,
2567 .disable_hub_initiated_lpm = 1,
2568};
2569
2570static int __init at76_mod_init(void)
2571{
2572 int result;
2573
2574 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2575
2576 mutex_init(&fw_mutex);
2577
2578 /* register this driver with the USB subsystem */
2579 result = usb_register(&at76_driver);
2580 if (result < 0)
2581 printk(KERN_ERR DRIVER_NAME
2582 ": usb_register failed (status %d)\n", result);
2583 else
2584 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2585 return result;
2586}
2587
2588static void __exit at76_mod_exit(void)
2589{
2590 int i;
2591
2592 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2593 usb_deregister(&at76_driver);
2594 for (i = 0; i < ARRAY_SIZE(firmwares); i++)
2595 release_firmware(firmwares[i].fw);
2596 led_trigger_unregister_simple(ledtrig_tx);
2597}
2598
2599module_param_named(debug, at76_debug, uint, 0600);
2600MODULE_PARM_DESC(debug, "Debugging level");
2601
2602module_init(at76_mod_init);
2603module_exit(at76_mod_exit);
2604
2605MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2606MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2607MODULE_AUTHOR("Alex <alex@foogod.com>");
2608MODULE_AUTHOR("Nick Jones");
2609MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2610MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2611MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2612MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2613MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
2614MODULE_DESCRIPTION(DRIVER_DESC);
2615MODULE_LICENSE("GPL");