drivers/staging/at76_usb/at76_usb.c

   1 /*
   2  * at76c503/at76c505 USB driver
   3  *
   4  * Copyright (c) 2002 - 2003 Oliver Kurth
   5  * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
   6  * Copyright (c) 2004 Nick Jones
   7  * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
   8  * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
   9  * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This file is part of the Berlios driver for WLAN USB devices based on the
  17  * Atmel AT76C503A/505/505A.
  18  *
  19  * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
  20  *
  21  * TODO for the mac80211 port:
  22  * o adhoc support
  23  * o RTS/CTS support
  24  * o Power Save Mode support
  25  * o support for short/long preambles
  26  * o export variables through debugfs/sysfs
  27  */
  28
  29 #include <linux/init.h>
  30 #include <linux/kernel.h>
  31 #include <linux/sched.h>
  32 #include <linux/errno.h>
  33 #include <linux/slab.h>
  34 #include <linux/module.h>
  35 #include <linux/spinlock.h>
  36 #include <linux/list.h>
  37 #include <linux/usb.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/if_arp.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/ethtool.h>
  42 #include <linux/wireless.h>
  43 #include <net/iw_handler.h>
  44 #include <net/ieee80211_radiotap.h>
  45 #include <linux/firmware.h>
  46 #include <linux/leds.h>
  47 #include <net/mac80211.h>
  48
  49 #include "at76_usb.h"
  50
  51 /* Version information */
  52 #define DRIVER_NAME "at76_usb"
  53 #define DRIVER_VERSION  "0.17"
  54 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
  55
  56 /* at76_debug bits */
  57 #define DBG_PROGRESS            0x00000001      /* authentication/accociation */
  58 #define DBG_BSS_TABLE           0x00000002      /* show BSS table after scans */
  59 #define DBG_IOCTL               0x00000004      /* ioctl calls / settings */
  60 #define DBG_MAC_STATE           0x00000008      /* MAC state transitions */
  61 #define DBG_TX_DATA             0x00000010      /* tx header */
  62 #define DBG_TX_DATA_CONTENT     0x00000020      /* tx content */
  63 #define DBG_TX_MGMT             0x00000040      /* tx management */
  64 #define DBG_RX_DATA             0x00000080      /* rx data header */
  65 #define DBG_RX_DATA_CONTENT     0x00000100      /* rx data content */
  66 #define DBG_RX_MGMT             0x00000200      /* rx mgmt frame headers */
  67 #define DBG_RX_BEACON           0x00000400      /* rx beacon */
  68 #define DBG_RX_CTRL             0x00000800      /* rx control */
  69 #define DBG_RX_MGMT_CONTENT     0x00001000      /* rx mgmt content */
  70 #define DBG_RX_FRAGS            0x00002000      /* rx data fragment handling */
  71 #define DBG_DEVSTART            0x00004000      /* fw download, device start */
  72 #define DBG_URB                 0x00008000      /* rx urb status, ... */
  73 #define DBG_RX_ATMEL_HDR        0x00010000      /* Atmel-specific Rx headers */
  74 #define DBG_PROC_ENTRY          0x00020000      /* procedure entries/exits */
  75 #define DBG_PM                  0x00040000      /* power management settings */
  76 #define DBG_BSS_MATCH           0x00080000      /* BSS match failures */
  77 #define DBG_PARAMS              0x00100000      /* show configured parameters */
  78 #define DBG_WAIT_COMPLETE       0x00200000      /* command completion */
  79 #define DBG_RX_FRAGS_SKB        0x00400000      /* skb header of Rx fragments */
  80 #define DBG_BSS_TABLE_RM        0x00800000      /* purging bss table entries */
  81 #define DBG_MONITOR_MODE        0x01000000      /* monitor mode */
  82 #define DBG_MIB                 0x02000000      /* dump all MIBs on startup */
  83 #define DBG_MGMT_TIMER          0x04000000      /* dump mgmt_timer ops */
  84 #define DBG_WE_EVENTS           0x08000000      /* dump wireless events */
  85 #define DBG_FW                  0x10000000      /* firmware download */
  86 #define DBG_DFU                 0x20000000      /* device firmware upgrade */
  87 #define DBG_CMD                 0x40000000
  88 #define DBG_MAC80211            0x80000000
  89
  90 #define DBG_DEFAULTS            0
  91
  92 /* Use our own dbg macro */
  93 #define at76_dbg(bits, format, arg...) \
  94         do { \
  95                 if (at76_debug & (bits)) \
  96                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , ## arg); \
  97         } while (0)
  98
  99 #define at76_dbg_dump(bits, buf, len, format, arg...)   \
 100         do { \
 101                 if (at76_debug & (bits)) { \
 102                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , ## arg); \
 103                 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
 104                 }                                                       \
 105         } while (0)
 106
 107 static int at76_debug = DBG_DEFAULTS;
 108
 109 #define FIRMWARE_IS_WPA(ver) ((ver.major == 1) && (ver.minor == 103))
 110
 111 /* Protect against concurrent firmware loading and parsing */
 112 static struct mutex fw_mutex;
 113
 114 static struct fwentry firmwares[] = {
 115         [0] = { "" },
 116         [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
 117         [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
 118         [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
 119         [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
 120         [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
 121         [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
 122         [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
 123         [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
 124 };
 125
 126 #define USB_DEVICE_DATA(__ops)  .driver_info = (kernel_ulong_t)(__ops)
 127
 128 static struct usb_device_id dev_table[] = {
 129         /*
 130          * at76c503-i3861
 131          */
 132         /* Generic AT76C503/3861 device */
 133         { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 134         /* Linksys WUSB11 v2.1/v2.6 */
 135         { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 136         /* Netgear MA101 rev. A */
 137         { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 138         /* Tekram U300C / Allnet ALL0193 */
 139         { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 140         /* HP HN210W J7801A */
 141         { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 142         /* Sitecom/Z-Com/Zyxel M4Y-750 */
 143         { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 144         /* Dynalink/Askey WLL013 (intersil) */
 145         { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 146         /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
 147         { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 148         /* BenQ AWL300 */
 149         { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 150         /* Addtron AWU-120, Compex WLU11 */
 151         { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 152         /* Intel AP310 AnyPoint II USB */
 153         { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 154         /* Dynalink L11U */
 155         { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 156         /* Arescom WL-210, FCC id 07J-GL2411USB */
 157         { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 158         /* I-O DATA WN-B11/USB */
 159         { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 160         /* BT Voyager 1010 */
 161         { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 162         /*
 163          * at76c503-i3863
 164          */
 165         /* Generic AT76C503/3863 device */
 166         { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 167         /* Samsung SWL-2100U */
 168         { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 169         /*
 170          * at76c503-rfmd
 171          */
 172         /* Generic AT76C503/RFMD device */
 173         { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 174         /* Dynalink/Askey WLL013 (rfmd) */
 175         { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
 176         /* Linksys WUSB11 v2.6 */
 177         { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
 178         /* Network Everywhere NWU11B */
 179         { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
 180         /* Netgear MA101 rev. B */
 181         { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 182         /* D-Link DWL-120 rev. E */
 183         { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
 184         /* Actiontec 802UAT1, HWU01150-01UK */
 185         { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 186         /* AirVast W-Buddie WN210 */
 187         { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 188         /* Dick Smith Electronics XH1153 802.11b USB adapter */
 189         { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
 190         /* CNet CNUSB611 */
 191         { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
 192         /* FiberLine FL-WL200U */
 193         { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
 194         /* BenQ AWL400 USB stick */
 195         { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
 196         /* 3Com 3CRSHEW696 */
 197         { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
 198         /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
 199         { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
 200         /* Belkin F5D6050, version 2 */
 201         { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
 202         /* iBlitzz, BWU613 (not *B or *SB) */
 203         { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
 204         /* Gigabyte GN-WLBM101 */
 205         { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
 206         /* Planex GW-US11S */
 207         { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
 208         /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
 209         { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
 210         /* Corega Wireless LAN USB-11 mini */
 211         { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
 212         /* Corega Wireless LAN USB-11 mini2 */
 213         { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
 214         /* Uniden PCW100 */
 215         { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
 216         /*
 217          * at76c503-rfmd-acc
 218          */
 219         /* SMC2664W */
 220         { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
 221         /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
 222         { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
 223         /*
 224          * at76c505-rfmd
 225          */
 226         /* Generic AT76C505/RFMD */
 227         { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
 228         /*
 229          * at76c505-rfmd2958
 230          */
 231         /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
 232         { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 233         /* Fiberline FL-WL240U */
 234         { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
 235         /* CNet CNUSB-611G */
 236         { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
 237         /* Linksys WUSB11 v2.8 */
 238         { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
 239         /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
 240         { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
 241         /* Corega WLAN USB Stick 11 */
 242         { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 243         /* Microstar MSI Box MS6978 */
 244         { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
 245         /*
 246          * at76c505a-rfmd2958
 247          */
 248         /* Generic AT76C505A device */
 249         { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
 250         /* Generic AT76C505AS device */
 251         { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
 252         /* Siemens Gigaset USB WLAN Adapter 11 */
 253         { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
 254         /*
 255          * at76c505amx-rfmd
 256          */
 257         /* Generic AT76C505AMX device */
 258         { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
 259         { }
 260 };
 261
 262 MODULE_DEVICE_TABLE(usb, dev_table);
 263
 264 /* Supported rates of this hardware, bit 7 marks basic rates */
 265 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
 266
 267 static const char *const preambles[] = { "long", "short", "auto" };
 268
 269 /* Firmware download */
 270 /* DFU states */
 271 #define STATE_IDLE                      0x00
 272 #define STATE_DETACH                    0x01
 273 #define STATE_DFU_IDLE                  0x02
 274 #define STATE_DFU_DOWNLOAD_SYNC         0x03
 275 #define STATE_DFU_DOWNLOAD_BUSY         0x04
 276 #define STATE_DFU_DOWNLOAD_IDLE         0x05
 277 #define STATE_DFU_MANIFEST_SYNC         0x06
 278 #define STATE_DFU_MANIFEST              0x07
 279 #define STATE_DFU_MANIFEST_WAIT_RESET   0x08
 280 #define STATE_DFU_UPLOAD_IDLE           0x09
 281 #define STATE_DFU_ERROR                 0x0a
 282
 283 /* DFU commands */
 284 #define DFU_DETACH                      0
 285 #define DFU_DNLOAD                      1
 286 #define DFU_UPLOAD                      2
 287 #define DFU_GETSTATUS                   3
 288 #define DFU_CLRSTATUS                   4
 289 #define DFU_GETSTATE                    5
 290 #define DFU_ABORT                       6
 291
 292 #define FW_BLOCK_SIZE 1024
 293
 294 struct dfu_status {
 295         unsigned char status;
 296         unsigned char poll_timeout[3];
 297         unsigned char state;
 298         unsigned char string;
 299 } __attribute__((packed));
 300
 301 static inline int at76_is_intersil(enum board_type board)
 302 {
 303         return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
 304 }
 305
 306 static inline int at76_is_503rfmd(enum board_type board)
 307 {
 308         return (board == BOARD_503 || board == BOARD_503_ACC);
 309 }
 310
 311 static inline int at76_is_505(enum board_type board)
 312 {
 313         return (board == BOARD_505 || BOARD_505_2958);
 314 }
 315
 316 static inline int at76_is_505a(enum board_type board)
 317 {
 318         return (board == BOARD_505A || board == BOARD_505AMX);
 319 }
 320
 321 /* Load a block of the first (internal) part of the firmware */
 322 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
 323                                   void *block, int size)
 324 {
 325         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
 326                                USB_TYPE_CLASS | USB_DIR_OUT |
 327                                USB_RECIP_INTERFACE, blockno, 0, block, size,
 328                                USB_CTRL_GET_TIMEOUT);
 329 }
 330
 331 static int at76_dfu_get_status(struct usb_device *udev,
 332                                struct dfu_status *status)
 333 {
 334         int ret;
 335
 336         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
 337                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 338                               0, 0, status, sizeof(struct dfu_status),
 339                               USB_CTRL_GET_TIMEOUT);
 340         return ret;
 341 }
 342
 343 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
 344 {
 345         int ret;
 346
 347         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
 348                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 349                               0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
 350         return ret;
 351 }
 352
 353 /* Convert timeout from the DFU status to jiffies */
 354 static inline unsigned long at76_get_timeout(struct dfu_status *s)
 355 {
 356         return msecs_to_jiffies((s->poll_timeout[2] << 16)
 357                                 | (s->poll_timeout[1] << 8)
 358                                 | (s->poll_timeout[0]));
 359 }
 360
 361 /* Load internal firmware from the buffer.  If manifest_sync_timeout > 0, use
 362  * its value in jiffies in the MANIFEST_SYNC state.  */
 363 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 364                                 int manifest_sync_timeout)
 365 {
 366         u8 *block;
 367         struct dfu_status dfu_stat_buf;
 368         int ret = 0;
 369         int need_dfu_state = 1;
 370         int is_done = 0;
 371         u8 dfu_state = 0;
 372         u32 dfu_timeout = 0;
 373         int bsize = 0;
 374         int blockno = 0;
 375
 376         at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
 377                  manifest_sync_timeout);
 378
 379         if (!size) {
 380                 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
 381                 return -EINVAL;
 382         }
 383
 384         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
 385         if (!block)
 386                 return -ENOMEM;
 387
 388         do {
 389                 if (need_dfu_state) {
 390                         ret = at76_dfu_get_state(udev, &dfu_state);
 391                         if (ret < 0) {
 392                                 dev_printk(KERN_ERR, &udev->dev,
 393                                            "cannot get DFU state: %d\n", ret);
 394                                 goto exit;
 395                         }
 396                         need_dfu_state = 0;
 397                 }
 398
 399                 switch (dfu_state) {
 400                 case STATE_DFU_DOWNLOAD_SYNC:
 401                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
 402                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 403                         if (ret >= 0) {
 404                                 dfu_state = dfu_stat_buf.state;
 405                                 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 406                                 need_dfu_state = 0;
 407                         } else
 408                                 dev_printk(KERN_ERR, &udev->dev,
 409                                            "at76_dfu_get_status returned %d\n",
 410                                            ret);
 411                         break;
 412
 413                 case STATE_DFU_DOWNLOAD_BUSY:
 414                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
 415                         need_dfu_state = 1;
 416
 417                         at76_dbg(DBG_DFU, "DFU: Resetting device");
 418                         schedule_timeout_interruptible(dfu_timeout);
 419                         break;
 420
 421                 case STATE_DFU_DOWNLOAD_IDLE:
 422                         at76_dbg(DBG_DFU, "DOWNLOAD...");
 423                         /* fall through */
 424                 case STATE_DFU_IDLE:
 425                         at76_dbg(DBG_DFU, "DFU IDLE");
 426
 427                         bsize = min_t(int, size, FW_BLOCK_SIZE);
 428                         memcpy(block, buf, bsize);
 429                         at76_dbg(DBG_DFU, "int fw, size left = %5d, "
 430                                  "bsize = %4d, blockno = %2d", size, bsize,
 431                                  blockno);
 432                         ret =
 433                             at76_load_int_fw_block(udev, blockno, block, bsize);
 434                         buf += bsize;
 435                         size -= bsize;
 436                         blockno++;
 437
 438                         if (ret != bsize)
 439                                 dev_printk(KERN_ERR, &udev->dev,
 440                                            "at76_load_int_fw_block "
 441                                            "returned %d\n", ret);
 442                         need_dfu_state = 1;
 443                         break;
 444
 445                 case STATE_DFU_MANIFEST_SYNC:
 446                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
 447
 448                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 449                         if (ret < 0)
 450                                 break;
 451
 452                         dfu_state = dfu_stat_buf.state;
 453                         dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 454                         need_dfu_state = 0;
 455
 456                         /* override the timeout from the status response,
 457                            needed for AT76C505A */
 458                         if (manifest_sync_timeout > 0)
 459                                 dfu_timeout = manifest_sync_timeout;
 460
 461                         at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
 462                         schedule_timeout_interruptible(dfu_timeout);
 463                         break;
 464
 465                 case STATE_DFU_MANIFEST:
 466                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
 467                         is_done = 1;
 468                         break;
 469
 470                 case STATE_DFU_MANIFEST_WAIT_RESET:
 471                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
 472                         is_done = 1;
 473                         break;
 474
 475                 case STATE_DFU_UPLOAD_IDLE:
 476                         at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
 477                         break;
 478
 479                 case STATE_DFU_ERROR:
 480                         at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
 481                         ret = -EPIPE;
 482                         break;
 483
 484                 default:
 485                         at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
 486                         ret = -EINVAL;
 487                         break;
 488                 }
 489         } while (!is_done && (ret >= 0));
 490
 491 exit:
 492         kfree(block);
 493         if (ret >= 0)
 494                 ret = 0;
 495
 496         return ret;
 497 }
 498
 499 #define HEX2STR_BUFFERS 4
 500 #define HEX2STR_MAX_LEN 64
 501 #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
 502
 503 /* Convert binary data into hex string */
 504 static char *hex2str(void *buf, int len)
 505 {
 506         static atomic_t a = ATOMIC_INIT(0);
 507         static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
 508         char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
 509         char *obuf = ret;
 510         u8 *ibuf = buf;
 511
 512         if (len > HEX2STR_MAX_LEN)
 513                 len = HEX2STR_MAX_LEN;
 514
 515         if (len <= 0) {
 516                 ret[0] = '\0';
 517                 return ret;
 518         }
 519
 520         while (len--) {
 521                 *obuf++ = BIN2HEX(*ibuf >> 4);
 522                 *obuf++ = BIN2HEX(*ibuf & 0xf);
 523                 *obuf++ = '-';
 524                 ibuf++;
 525         }
 526         *(--obuf) = '\0';
 527
 528         return ret;
 529 }
 530
 531 #define MAC2STR_BUFFERS 4
 532
 533 static inline char *mac2str(u8 *mac)
 534 {
 535         static atomic_t a = ATOMIC_INIT(0);
 536         static char bufs[MAC2STR_BUFFERS][6 * 3];
 537         char *str;
 538
 539         str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)];
 540         sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
 541                 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
 542         return str;
 543 }
 544
 545 /* LED trigger */
 546 static int tx_activity;
 547 static void at76_ledtrig_tx_timerfunc(unsigned long data);
 548 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
 549 DEFINE_LED_TRIGGER(ledtrig_tx);
 550
 551 static void at76_ledtrig_tx_timerfunc(unsigned long data)
 552 {
 553         static int tx_lastactivity;
 554
 555         if (tx_lastactivity != tx_activity) {
 556                 tx_lastactivity = tx_activity;
 557                 led_trigger_event(ledtrig_tx, LED_FULL);
 558                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 559         } else
 560                 led_trigger_event(ledtrig_tx, LED_OFF);
 561 }
 562
 563 static void at76_ledtrig_tx_activity(void)
 564 {
 565         tx_activity++;
 566         if (!timer_pending(&ledtrig_tx_timer))
 567                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 568 }
 569
 570 static int at76_remap(struct usb_device *udev)
 571 {
 572         int ret;
 573         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
 574                               USB_TYPE_VENDOR | USB_DIR_OUT |
 575                               USB_RECIP_INTERFACE, 0, 0, NULL, 0,
 576                               USB_CTRL_GET_TIMEOUT);
 577         if (ret < 0)
 578                 return ret;
 579         return 0;
 580 }
 581
 582 static int at76_get_op_mode(struct usb_device *udev)
 583 {
 584         int ret;
 585         u8 op_mode;
 586
 587         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 588                               USB_TYPE_VENDOR | USB_DIR_IN |
 589                               USB_RECIP_INTERFACE, 0x01, 0, &op_mode, 1,
 590                               USB_CTRL_GET_TIMEOUT);
 591         if (ret < 0)
 592                 return ret;
 593         else if (ret < 1)
 594                 return -EIO;
 595         else
 596                 return op_mode;
 597 }
 598
 599 /* Load a block of the second ("external") part of the firmware */
 600 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
 601                                          void *block, int size)
 602 {
 603         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 604                                USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 605                                0x0802, blockno, block, size,
 606                                USB_CTRL_GET_TIMEOUT);
 607 }
 608
 609 static inline int at76_get_hw_cfg(struct usb_device *udev,
 610                                   union at76_hwcfg *buf, int buf_size)
 611 {
 612         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 613                                USB_TYPE_VENDOR | USB_DIR_IN |
 614                                USB_RECIP_INTERFACE, 0x0a02, 0,
 615                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 616 }
 617
 618 /* Intersil boards use a different "value" for GetHWConfig requests */
 619 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
 620                                            union at76_hwcfg *buf, int buf_size)
 621 {
 622         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 623                                USB_TYPE_VENDOR | USB_DIR_IN |
 624                                USB_RECIP_INTERFACE, 0x0902, 0,
 625                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 626 }
 627
 628 /* Get the hardware configuration for the adapter and put it to the appropriate
 629  * fields of 'priv' (the GetHWConfig request and interpretation of the result
 630  * depends on the board type) */
 631 static int at76_get_hw_config(struct at76_priv *priv)
 632 {
 633         int ret;
 634         union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
 635
 636         if (!hwcfg)
 637                 return -ENOMEM;
 638
 639         if (at76_is_intersil(priv->board_type)) {
 640                 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
 641                                                sizeof(hwcfg->i));
 642                 if (ret < 0)
 643                         goto exit;
 644                 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
 645                 priv->regulatory_domain = hwcfg->i.regulatory_domain;
 646         } else if (at76_is_503rfmd(priv->board_type)) {
 647                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
 648                 if (ret < 0)
 649                         goto exit;
 650                 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
 651                 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
 652         } else {
 653                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
 654                 if (ret < 0)
 655                         goto exit;
 656                 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
 657                 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
 658         }
 659
 660 exit:
 661         kfree(hwcfg);
 662         if (ret < 0)
 663                 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
 664                        wiphy_name(priv->hw->wiphy), ret);
 665
 666         return ret;
 667 }
 668
 669 static struct reg_domain const *at76_get_reg_domain(u16 code)
 670 {
 671         int i;
 672         static struct reg_domain const fd_tab[] = {
 673                 { 0x10, "FCC (USA)", 0x7ff },   /* ch 1-11 */
 674                 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
 675                 { 0x30, "ETSI (most of Europe)", 0x1fff },      /* ch 1-13 */
 676                 { 0x31, "Spain", 0x600 },       /* ch 10-11 */
 677                 { 0x32, "France", 0x1e00 },     /* ch 10-13 */
 678                 { 0x40, "MKK (Japan)", 0x2000 },        /* ch 14 */
 679                 { 0x41, "MKK1 (Japan)", 0x3fff },       /* ch 1-14 */
 680                 { 0x50, "Israel", 0x3fc },      /* ch 3-9 */
 681                 { 0x00, "<unknown>", 0xffffffff }       /* ch 1-32 */
 682         };
 683
 684         /* Last entry is fallback for unknown domain code */
 685         for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
 686                 if (code == fd_tab[i].code)
 687                         break;
 688
 689         return &fd_tab[i];
 690 }
 691
 692 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
 693                                int buf_size)
 694 {
 695         int ret;
 696
 697         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 698                               USB_TYPE_VENDOR | USB_DIR_IN |
 699                               USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
 700                               USB_CTRL_GET_TIMEOUT);
 701         if (ret >= 0 && ret != buf_size)
 702                 return -EIO;
 703         return ret;
 704 }
 705
 706 /* Return positive number for status, negative for an error */
 707 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
 708 {
 709         u8 stat_buf[40];
 710         int ret;
 711
 712         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
 713                               USB_TYPE_VENDOR | USB_DIR_IN |
 714                               USB_RECIP_INTERFACE, cmd, 0, stat_buf,
 715                               sizeof(stat_buf), USB_CTRL_GET_TIMEOUT);
 716         if (ret < 0)
 717                 return ret;
 718
 719         return stat_buf[5];
 720 }
 721
 722 #define MAKE_CMD_CASE(c) case (c): return #c
 723
 724 static const char *at76_get_cmd_string(u8 cmd_status)
 725 {
 726         switch (cmd_status) {
 727                 MAKE_CMD_CASE(CMD_SET_MIB);
 728                 MAKE_CMD_CASE(CMD_GET_MIB);
 729                 MAKE_CMD_CASE(CMD_SCAN);
 730                 MAKE_CMD_CASE(CMD_JOIN);
 731                 MAKE_CMD_CASE(CMD_START_IBSS);
 732                 MAKE_CMD_CASE(CMD_RADIO_ON);
 733                 MAKE_CMD_CASE(CMD_RADIO_OFF);
 734                 MAKE_CMD_CASE(CMD_STARTUP);
 735         }
 736
 737         return "UNKNOWN";
 738 }
 739
 740 static int at76_set_card_command(struct usb_device *udev, int cmd, void *buf,
 741                                  int buf_size)
 742 {
 743         int ret;
 744         struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
 745                                                buf_size, GFP_KERNEL);
 746
 747         if (!cmd_buf)
 748                 return -ENOMEM;
 749
 750         cmd_buf->cmd = cmd;
 751         cmd_buf->reserved = 0;
 752         cmd_buf->size = cpu_to_le16(buf_size);
 753         memcpy(cmd_buf->data, buf, buf_size);
 754
 755         at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
 756                       "issuing command %s (0x%02x)",
 757                       at76_get_cmd_string(cmd), cmd);
 758
 759         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 760                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 761                               0, 0, cmd_buf,
 762                               sizeof(struct at76_command) + buf_size,
 763                               USB_CTRL_GET_TIMEOUT);
 764         kfree(cmd_buf);
 765         return ret;
 766 }
 767
 768 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
 769 static const char *at76_get_cmd_status_string(u8 cmd_status)
 770 {
 771         switch (cmd_status) {
 772                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
 773                 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
 774                 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
 775                 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
 776                 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
 777                 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
 778                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
 779                 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
 780                 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
 781         }
 782
 783         return "UNKNOWN";
 784 }
 785
 786 /* Wait until the command is completed */
 787 static int at76_wait_completion(struct at76_priv *priv, int cmd)
 788 {
 789         int status = 0;
 790         unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
 791
 792         do {
 793                 status = at76_get_cmd_status(priv->udev, cmd);
 794                 if (status < 0) {
 795                         printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
 796                                wiphy_name(priv->hw->wiphy), status);
 797                         break;
 798                 }
 799
 800                 at76_dbg(DBG_WAIT_COMPLETE,
 801                          "%s: Waiting on cmd %d, status = %d (%s)",
 802                          wiphy_name(priv->hw->wiphy), cmd, status,
 803                          at76_get_cmd_status_string(status));
 804
 805                 if (status != CMD_STATUS_IN_PROGRESS
 806                     && status != CMD_STATUS_IDLE)
 807                         break;
 808
 809                 schedule_timeout_interruptible(HZ / 10);        /* 100 ms */
 810                 if (time_after(jiffies, timeout)) {
 811                         printk(KERN_ERR
 812                                "%s: completion timeout for command %d\n",
 813                                wiphy_name(priv->hw->wiphy), cmd);
 814                         status = -ETIMEDOUT;
 815                         break;
 816                 }
 817         } while (1);
 818
 819         return status;
 820 }
 821
 822 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
 823 {
 824         int ret;
 825
 826         ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
 827                                     offsetof(struct set_mib_buffer,
 828                                              data) + buf->size);
 829         if (ret < 0)
 830                 return ret;
 831
 832         ret = at76_wait_completion(priv, CMD_SET_MIB);
 833         if (ret != CMD_STATUS_COMPLETE) {
 834                 printk(KERN_INFO
 835                        "%s: set_mib: at76_wait_completion failed "
 836                        "with %d\n", wiphy_name(priv->hw->wiphy), ret);
 837                 ret = -EIO;
 838         }
 839
 840         return ret;
 841 }
 842
 843 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
 844 static int at76_set_radio(struct at76_priv *priv, int enable)
 845 {
 846         int ret;
 847         int cmd;
 848
 849         if (priv->radio_on == enable)
 850                 return 0;
 851
 852         cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
 853
 854         ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
 855         if (ret < 0)
 856                 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
 857                        wiphy_name(priv->hw->wiphy), cmd, ret);
 858         else
 859                 ret = 1;
 860
 861         priv->radio_on = enable;
 862         return ret;
 863 }
 864
 865 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
 866 static int at76_set_pm_mode(struct at76_priv *priv)
 867 {
 868         int ret = 0;
 869
 870         priv->mib_buf.type = MIB_MAC_MGMT;
 871         priv->mib_buf.size = 1;
 872         priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
 873         priv->mib_buf.data.byte = priv->pm_mode;
 874
 875         ret = at76_set_mib(priv, &priv->mib_buf);
 876         if (ret < 0)
 877                 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
 878                        wiphy_name(priv->hw->wiphy), ret);
 879
 880         return ret;
 881 }
 882
 883 /* Set the association id for power save mode */
 884 static int at76_set_associd(struct at76_priv *priv, u16 id)
 885 {
 886         int ret = 0;
 887
 888         priv->mib_buf.type = MIB_MAC_MGMT;
 889         priv->mib_buf.size = 2;
 890         priv->mib_buf.index = offsetof(struct mib_mac_mgmt, station_id);
 891         priv->mib_buf.data.word = cpu_to_le16(id);
 892
 893         ret = at76_set_mib(priv, &priv->mib_buf);
 894         if (ret < 0)
 895                 printk(KERN_ERR "%s: set_mib (associd) failed: %d\n",
 896                        wiphy_name(priv->hw->wiphy), ret);
 897
 898         return ret;
 899 }
 900
 901 /* Set the listen interval for power save mode */
 902 static int at76_set_listen_interval(struct at76_priv *priv, u16 interval)
 903 {
 904         int ret = 0;
 905
 906         priv->mib_buf.type = MIB_MAC;
 907         priv->mib_buf.size = 2;
 908         priv->mib_buf.index = offsetof(struct mib_mac, listen_interval);
 909         priv->mib_buf.data.word = cpu_to_le16(interval);
 910
 911         ret = at76_set_mib(priv, &priv->mib_buf);
 912         if (ret < 0)
 913                 printk(KERN_ERR
 914                        "%s: set_mib (listen_interval) failed: %d\n",
 915                        wiphy_name(priv->hw->wiphy), ret);
 916
 917         return ret;
 918 }
 919
 920 static int at76_set_preamble(struct at76_priv *priv, u8 type)
 921 {
 922         int ret = 0;
 923
 924         priv->mib_buf.type = MIB_LOCAL;
 925         priv->mib_buf.size = 1;
 926         priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
 927         priv->mib_buf.data.byte = type;
 928
 929         ret = at76_set_mib(priv, &priv->mib_buf);
 930         if (ret < 0)
 931                 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
 932                        wiphy_name(priv->hw->wiphy), ret);
 933
 934         return ret;
 935 }
 936
 937 static int at76_set_frag(struct at76_priv *priv, u16 size)
 938 {
 939         int ret = 0;
 940
 941         priv->mib_buf.type = MIB_MAC;
 942         priv->mib_buf.size = 2;
 943         priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
 944         priv->mib_buf.data.word = cpu_to_le16(size);
 945
 946         ret = at76_set_mib(priv, &priv->mib_buf);
 947         if (ret < 0)
 948                 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
 949                        wiphy_name(priv->hw->wiphy), ret);
 950
 951         return ret;
 952 }
 953
 954 static int at76_set_rts(struct at76_priv *priv, u16 size)
 955 {
 956         int ret = 0;
 957
 958         priv->mib_buf.type = MIB_MAC;
 959         priv->mib_buf.size = 2;
 960         priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
 961         priv->mib_buf.data.word = cpu_to_le16(size);
 962
 963         ret = at76_set_mib(priv, &priv->mib_buf);
 964         if (ret < 0)
 965                 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
 966                        wiphy_name(priv->hw->wiphy), ret);
 967
 968         return ret;
 969 }
 970
 971 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
 972 {
 973         int ret = 0;
 974
 975         priv->mib_buf.type = MIB_LOCAL;
 976         priv->mib_buf.size = 1;
 977         priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
 978         priv->mib_buf.data.byte = onoff;
 979
 980         ret = at76_set_mib(priv, &priv->mib_buf);
 981         if (ret < 0)
 982                 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
 983                        wiphy_name(priv->hw->wiphy), ret);
 984
 985         return ret;
 986 }
 987
 988 static int at76_add_mac_address(struct at76_priv *priv, void *addr)
 989 {
 990         int ret = 0;
 991
 992         priv->mib_buf.type = MIB_MAC_ADDR;
 993         priv->mib_buf.size = ETH_ALEN;
 994         priv->mib_buf.index = offsetof(struct mib_mac_addr, mac_addr);
 995         memcpy(priv->mib_buf.data.addr, addr, ETH_ALEN);
 996
 997         ret = at76_set_mib(priv, &priv->mib_buf);
 998         if (ret < 0)
 999                 printk(KERN_ERR "%s: set_mib (MAC_ADDR, mac_addr) failed: %d\n",
1000                        wiphy_name(priv->hw->wiphy), ret);
1001
1002         return ret;
1003 }
1004
1005 static int at76_set_tkip_bssid(struct at76_priv *priv, const void *addr)
1006 {
1007         int ret = 0;
1008
1009         priv->mib_buf.type = MIB_MAC_ENCRYPTION;
1010         priv->mib_buf.size = ETH_ALEN;
1011         priv->mib_buf.index = offsetof(struct mib_mac_encryption, tkip_bssid);
1012         memcpy(priv->mib_buf.data.addr, addr, ETH_ALEN);
1013
1014         ret = at76_set_mib(priv, &priv->mib_buf);
1015         if (ret < 0)
1016                 printk(KERN_ERR "%s: set_mib (MAC_ENCRYPTION, tkip_bssid) failed: %d\n",
1017                        wiphy_name(priv->hw->wiphy), ret);
1018
1019         return ret;
1020 }
1021
1022 static int at76_reset_rsc(struct at76_priv *priv)
1023 {
1024         int ret = 0;
1025
1026         priv->mib_buf.type = MIB_MAC_ENCRYPTION;
1027         priv->mib_buf.size = 4 * 8;
1028         priv->mib_buf.index = offsetof(struct mib_mac_encryption, key_rsc);
1029         memset(priv->mib_buf.data.data, 0 , priv->mib_buf.size);
1030
1031         ret = at76_set_mib(priv, &priv->mib_buf);
1032         if (ret < 0)
1033                 printk(KERN_ERR "%s: set_mib (MAC_ENCRYPTION, key_rsc) failed: %d\n",
1034                        wiphy_name(priv->hw->wiphy), ret);
1035
1036         return ret;
1037 }
1038
1039 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
1040 {
1041         int i;
1042         int ret;
1043         struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
1044                                          GFP_KERNEL);
1045
1046         if (!m)
1047                 return;
1048
1049         ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
1050                            sizeof(struct mib_mac_addr));
1051         if (ret < 0) {
1052                 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
1053                        wiphy_name(priv->hw->wiphy), ret);
1054                 goto exit;
1055         }
1056
1057         at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %s res 0x%x 0x%x",
1058                  wiphy_name(priv->hw->wiphy),
1059                  mac2str(m->mac_addr), m->res[0], m->res[1]);
1060         for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
1061                 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %s, "
1062                          "status %d", wiphy_name(priv->hw->wiphy), i,
1063                          mac2str(m->group_addr[i]), m->group_addr_status[i]);
1064 exit:
1065         kfree(m);
1066 }
1067
1068 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
1069 {
1070         int i;
1071         int ret;
1072         int key_len;
1073         struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
1074
1075         if (!m)
1076                 return;
1077
1078         ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
1079                            sizeof(struct mib_mac_wep));
1080         if (ret < 0) {
1081                 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
1082                        wiphy_name(priv->hw->wiphy), ret);
1083                 goto exit;
1084         }
1085
1086         at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1087                  "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1088                  "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
1089                  m->privacy_invoked, m->wep_default_key_id,
1090                  m->wep_key_mapping_len, m->exclude_unencrypted,
1091                  le32_to_cpu(m->wep_icv_error_count),
1092                  le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1093                  m->wep_default_key_id);
1094
1095         key_len = (m->encryption_level == 1) ?
1096             WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1097
1098         for (i = 0; i < WEP_KEYS; i++)
1099                 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1100                          wiphy_name(priv->hw->wiphy), i,
1101                          hex2str(m->wep_default_keyvalue[i], key_len));
1102 exit:
1103         kfree(m);
1104 }
1105
1106 static void at76_dump_mib_mac_encryption(struct at76_priv *priv)
1107 {
1108         int i;
1109         int ret;
1110         /*int key_len;*/
1111         struct mib_mac_encryption *m = kmalloc(sizeof(struct mib_mac_encryption), GFP_KERNEL);
1112
1113         if (!m)
1114                 return;
1115
1116         ret = at76_get_mib(priv->udev, MIB_MAC_ENCRYPTION, m,
1117                            sizeof(struct mib_mac_encryption));
1118         if (ret < 0) {
1119                 printk(KERN_ERR "%s: at76_get_mib (MAC_ENCRYPTION) failed: %d\n",
1120                        wiphy_name(priv->hw->wiphy), ret);
1121                 goto exit;
1122         }
1123
1124         at76_dbg(DBG_MIB, "%s: MIB MAC_ENCRYPTION: tkip_bssid %s priv_invoked %u "
1125                  "ciph_key_id %u grp_key_id %u excl_unencr %u "
1126                  "ckip_key_perm %u wep_icv_err %u wep_excluded %u",
1127                  wiphy_name(priv->hw->wiphy), mac2str(m->tkip_bssid),
1128                  m->privacy_invoked, m->cipher_default_key_id,
1129                  m->cipher_default_group_key_id, m->exclude_unencrypted,
1130                  m->ckip_key_permutation,
1131                  le32_to_cpu(m->wep_icv_error_count),
1132                  le32_to_cpu(m->wep_excluded_count));
1133
1134         /*key_len = (m->encryption_level == 1) ?
1135             WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;*/
1136
1137         for (i = 0; i < CIPHER_KEYS; i++)
1138                 at76_dbg(DBG_MIB, "%s: MIB MAC_ENCRYPTION: key %d: %s",
1139                          wiphy_name(priv->hw->wiphy), i,
1140                          hex2str(m->cipher_default_keyvalue[i], CIPHER_KEY_LEN));
1141 exit:
1142         kfree(m);
1143 }
1144
1145 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1146 {
1147         int ret;
1148         struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1149                                          GFP_KERNEL);
1150
1151         if (!m)
1152                 return;
1153
1154         ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1155                            sizeof(struct mib_mac_mgmt));
1156         if (ret < 0) {
1157                 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1158                        wiphy_name(priv->hw->wiphy), ret);
1159                 goto exit;
1160         }
1161
1162         at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1163                  "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1164                  "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1165                  "current_bssid %s current_essid %s current_bss_type %d "
1166                  "pm_mode %d ibss_change %d res %d "
1167                  "multi_domain_capability_implemented %d "
1168                  "international_roaming %d country_string %.3s",
1169                  wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1170                  le16_to_cpu(m->CFP_max_duration),
1171                  le16_to_cpu(m->medium_occupancy_limit),
1172                  le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1173                  m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1174                  m->CFP_period, mac2str(m->current_bssid),
1175                  hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1176                  m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1177                  m->res, m->multi_domain_capability_implemented,
1178                  m->multi_domain_capability_enabled, m->country_string);
1179 exit:
1180         kfree(m);
1181 }
1182
1183 static void at76_dump_mib_mac(struct at76_priv *priv)
1184 {
1185         int ret;
1186         struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1187
1188         if (!m)
1189                 return;
1190
1191         ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1192         if (ret < 0) {
1193                 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1194                        wiphy_name(priv->hw->wiphy), ret);
1195                 goto exit;
1196         }
1197
1198         at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1199                  "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1200                  "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1201                  "scan_type %d scan_channel %d probe_delay %u "
1202                  "min_channel_time %d max_channel_time %d listen_int %d "
1203                  "desired_ssid %s desired_bssid %s desired_bsstype %d",
1204                  wiphy_name(priv->hw->wiphy),
1205                  le32_to_cpu(m->max_tx_msdu_lifetime),
1206                  le32_to_cpu(m->max_rx_lifetime),
1207                  le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1208                  le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1209                  m->short_retry_time, m->long_retry_time, m->scan_type,
1210                  m->scan_channel, le16_to_cpu(m->probe_delay),
1211                  le16_to_cpu(m->min_channel_time),
1212                  le16_to_cpu(m->max_channel_time),
1213                  le16_to_cpu(m->listen_interval),
1214                  hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1215                  mac2str(m->desired_bssid), m->desired_bsstype);
1216 exit:
1217         kfree(m);
1218 }
1219
1220 static void at76_dump_mib_phy(struct at76_priv *priv)
1221 {
1222         int ret;
1223         struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1224
1225         if (!m)
1226                 return;
1227
1228         ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1229         if (ret < 0) {
1230                 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1231                        wiphy_name(priv->hw->wiphy), ret);
1232                 goto exit;
1233         }
1234
1235         at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1236                  "sifs_time %d preamble_length %d plcp_header_length %d "
1237                  "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1238                  "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1239                  "phy_type %d current_reg_domain %d",
1240                  wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1241                  le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1242                  le16_to_cpu(m->preamble_length),
1243                  le16_to_cpu(m->plcp_header_length),
1244                  le16_to_cpu(m->mpdu_max_length),
1245                  le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1246                  m->operation_rate_set[1], m->operation_rate_set[2],
1247                  m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1248                  m->phy_type, m->current_reg_domain);
1249 exit:
1250         kfree(m);
1251 }
1252
1253 static void at76_dump_mib_local(struct at76_priv *priv)
1254 {
1255         int ret;
1256         struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1257
1258         if (!m)
1259                 return;
1260
1261         ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1262         if (ret < 0) {
1263                 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1264                        wiphy_name(priv->hw->wiphy), ret);
1265                 goto exit;
1266         }
1267
1268         at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1269                  "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1270                  "preamble_type %d", wiphy_name(priv->hw->wiphy),
1271                  m->beacon_enable,
1272                  m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1273                  m->preamble_type);
1274 exit:
1275         kfree(m);
1276 }
1277
1278 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1279 {
1280         int ret;
1281         struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1282
1283         if (!m)
1284                 return;
1285
1286         ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1287                            sizeof(struct mib_mdomain));
1288         if (ret < 0) {
1289                 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1290                        wiphy_name(priv->hw->wiphy), ret);
1291                 goto exit;
1292         }
1293
1294         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1295                  wiphy_name(priv->hw->wiphy),
1296                  hex2str(m->channel_list, sizeof(m->channel_list)));
1297
1298         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1299                  wiphy_name(priv->hw->wiphy),
1300                  hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1301 exit:
1302         kfree(m);
1303 }
1304
1305 /* Enable monitor mode */
1306 static int at76_start_monitor(struct at76_priv *priv)
1307 {
1308         struct at76_req_scan scan;
1309         int ret;
1310
1311         memset(&scan, 0, sizeof(struct at76_req_scan));
1312         memset(scan.bssid, 0xff, ETH_ALEN);
1313
1314         scan.channel = priv->channel;
1315         scan.scan_type = SCAN_TYPE_PASSIVE;
1316         scan.international_scan = 0;
1317
1318         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1319         if (ret >= 0)
1320                 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1321
1322         return ret;
1323 }
1324
1325 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1326    likely to compensate a flaw in the AT76C503A USB part ... */
1327 static inline int at76_calc_padding(int wlen)
1328 {
1329         /* add the USB TX header */
1330         wlen += AT76_TX_HDRLEN;
1331
1332         wlen = wlen % 64;
1333
1334         if (wlen < 50)
1335                 return 50 - wlen;
1336
1337         if (wlen >= 61)
1338                 return 64 + 50 - wlen;
1339
1340         return 0;
1341 }
1342
1343 static void at76_rx_callback(struct urb *urb)
1344 {
1345         struct at76_priv *priv = urb->context;
1346
1347         priv->rx_tasklet.data = (unsigned long)urb;
1348         tasklet_schedule(&priv->rx_tasklet);
1349         return;
1350 }
1351
1352 static int at76_submit_rx_urb(struct at76_priv *priv)
1353 {
1354         int ret;
1355         int size;
1356         struct sk_buff *skb = priv->rx_skb;
1357
1358         if (!priv->rx_urb) {
1359                 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
1360                        wiphy_name(priv->hw->wiphy), __func__);
1361                 return -EFAULT;
1362         }
1363
1364         if (!skb) {
1365                 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1366                 if (!skb) {
1367                         printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
1368                                wiphy_name(priv->hw->wiphy));
1369                         ret = -ENOMEM;
1370                         goto exit;
1371                 }
1372                 priv->rx_skb = skb;
1373         } else {
1374                 skb_push(skb, skb_headroom(skb));
1375                 skb_trim(skb, 0);
1376         }
1377
1378         size = skb_tailroom(skb);
1379         usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1380                           skb_put(skb, size), size, at76_rx_callback, priv);
1381         ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1382         if (ret < 0) {
1383                 if (ret == -ENODEV)
1384                         at76_dbg(DBG_DEVSTART,
1385                                  "usb_submit_urb returned -ENODEV");
1386                 else
1387                         printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
1388                                wiphy_name(priv->hw->wiphy), ret);
1389         }
1390
1391 exit:
1392         if (ret < 0 && ret != -ENODEV)
1393                 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
1394                        "driver and/or power cycle the device\n",
1395                        wiphy_name(priv->hw->wiphy));
1396
1397         return ret;
1398 }
1399
1400 /* Download external firmware */
1401 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1402 {
1403         int ret;
1404         int op_mode;
1405         int blockno = 0;
1406         int bsize;
1407         u8 *block;
1408         u8 *buf = fwe->extfw;
1409         int size = fwe->extfw_size;
1410
1411         if (!buf || !size)
1412                 return -ENOENT;
1413
1414         op_mode = at76_get_op_mode(udev);
1415         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1416
1417         if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1418                 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1419                            op_mode);
1420                 return -EINVAL;
1421         }
1422
1423         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1424         if (!block)
1425                 return -ENOMEM;
1426
1427         at76_dbg(DBG_DEVSTART, "downloading external firmware");
1428
1429         /* for fw >= 0.100, the device needs an extra empty block */
1430         do {
1431                 bsize = min_t(int, size, FW_BLOCK_SIZE);
1432                 memcpy(block, buf, bsize);
1433                 at76_dbg(DBG_DEVSTART,
1434                          "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1435                          size, bsize, blockno);
1436                 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1437                 if (ret != bsize) {
1438                         dev_printk(KERN_ERR, &udev->dev,
1439                                    "loading %dth firmware block failed: %d\n",
1440                                    blockno, ret);
1441                         goto exit;
1442                 }
1443                 buf += bsize;
1444                 size -= bsize;
1445                 blockno++;
1446         } while (bsize > 0);
1447
1448         if (at76_is_505a(fwe->board_type)) {
1449                 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1450                 schedule_timeout_interruptible(HZ / 5 + 1);
1451         }
1452
1453 exit:
1454         kfree(block);
1455         if (ret < 0)
1456                 dev_printk(KERN_ERR, &udev->dev,
1457                            "downloading external firmware failed: %d\n", ret);
1458         return ret;
1459 }
1460
1461 /* Download internal firmware */
1462 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1463 {
1464         int ret;
1465         int need_remap = !at76_is_505a(fwe->board_type);
1466
1467         ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1468                                    need_remap ? 0 : 2 * HZ);
1469
1470         if (ret < 0) {
1471                 dev_printk(KERN_ERR, &udev->dev,
1472                            "downloading internal fw failed with %d\n", ret);
1473                 goto exit;
1474         }
1475
1476         at76_dbg(DBG_DEVSTART, "sending REMAP");
1477
1478         /* no REMAP for 505A (see SF driver) */
1479         if (need_remap) {
1480                 ret = at76_remap(udev);
1481                 if (ret < 0) {
1482                         dev_printk(KERN_ERR, &udev->dev,
1483                                    "sending REMAP failed with %d\n", ret);
1484                         goto exit;
1485                 }
1486         }
1487
1488         at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1489         schedule_timeout_interruptible(2 * HZ + 1);
1490         usb_reset_device(udev);
1491
1492 exit:
1493         return ret;
1494 }
1495
1496 static int at76_startup_device(struct at76_priv *priv)
1497 {
1498         struct at76_card_config *ccfg = &priv->card_config;
1499         int ret;
1500
1501         at76_dbg(DBG_PARAMS,
1502                  "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1503                  "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1504                  priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1505                  priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1506                  priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1507                  priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1508         at76_dbg(DBG_PARAMS,
1509                  "%s param: preamble %s rts %d retry %d frag %d "
1510                  "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1511                  preambles[priv->preamble_type], priv->rts_threshold,
1512                  priv->short_retry_limit, priv->frag_threshold,
1513                  priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1514                  TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1515                  TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1516                  TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1517                  TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1518         at76_dbg(DBG_PARAMS,
1519                  "%s param: pm_mode %d pm_period %d auth_mode %s "
1520                  "scan_times %d %d scan_mode %s",
1521                  wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1522                  priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1523                  priv->scan_min_time, priv->scan_max_time,
1524                  priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1525
1526         memset(ccfg, 0, sizeof(struct at76_card_config));
1527         ccfg->promiscuous_mode = 0;
1528         ccfg->short_retry_limit = priv->short_retry_limit;
1529
1530         if (priv->wep_enabled) {
1531                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1532                         ccfg->encryption_type = 2;
1533                 else
1534                         ccfg->encryption_type = 1;
1535
1536                 /* jal: always exclude unencrypted if WEP is active */
1537                 ccfg->exclude_unencrypted = 1;
1538         } else {
1539                 ccfg->exclude_unencrypted = 0;
1540                 ccfg->encryption_type = 0;
1541         }
1542
1543         ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1544         ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1545
1546         memcpy(ccfg->basic_rate_set, hw_rates, 4);
1547         /* jal: really needed, we do a set_mib for autorate later ??? */
1548         ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1549         ccfg->channel = priv->channel;
1550         ccfg->privacy_invoked = priv->wep_enabled;
1551         memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1552         ccfg->ssid_len = priv->essid_size;
1553
1554         ccfg->wep_default_key_id = priv->wep_key_id;
1555         memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1556                sizeof(priv->wep_keys));
1557
1558         ccfg->short_preamble = priv->preamble_type;
1559         ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1560
1561         ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1562                                     sizeof(struct at76_card_config));
1563         if (ret < 0) {
1564                 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1565                        wiphy_name(priv->hw->wiphy), ret);
1566                 return ret;
1567         }
1568
1569         at76_wait_completion(priv, CMD_STARTUP);
1570
1571         /* remove BSSID from previous run */
1572         memset(priv->bssid, 0, ETH_ALEN);
1573
1574         if (at76_set_radio(priv, 1) == 1)
1575                 at76_wait_completion(priv, CMD_RADIO_ON);
1576
1577         ret = at76_set_preamble(priv, priv->preamble_type);
1578         if (ret < 0)
1579                 return ret;
1580
1581         ret = at76_set_frag(priv, priv->frag_threshold);
1582         if (ret < 0)
1583                 return ret;
1584
1585         ret = at76_set_rts(priv, priv->rts_threshold);
1586         if (ret < 0)
1587                 return ret;
1588
1589         ret = at76_set_autorate_fallback(priv,
1590                                          priv->txrate == TX_RATE_AUTO ? 1 : 0);
1591         if (ret < 0)
1592                 return ret;
1593
1594         ret = at76_set_pm_mode(priv);
1595         if (ret < 0)
1596                 return ret;
1597
1598         if (at76_debug & DBG_MIB) {
1599                 at76_dump_mib_mac(priv);
1600                 at76_dump_mib_mac_addr(priv);
1601                 at76_dump_mib_mac_mgmt(priv);
1602                 at76_dump_mib_mac_wep(priv);
1603                 at76_dump_mib_mdomain(priv);
1604                 at76_dump_mib_phy(priv);
1605                 at76_dump_mib_local(priv);
1606         }
1607
1608         return 0;
1609 }
1610
1611 /* Enable or disable promiscuous mode */
1612 static void at76_work_set_promisc(struct work_struct *work)
1613 {
1614         struct at76_priv *priv = container_of(work, struct at76_priv,
1615                                               work_set_promisc);
1616         int ret = 0;
1617
1618         mutex_lock(&priv->mtx);
1619
1620         priv->mib_buf.type = MIB_LOCAL;
1621         priv->mib_buf.size = 1;
1622         priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1623         priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1624
1625         ret = at76_set_mib(priv, &priv->mib_buf);
1626         if (ret < 0)
1627                 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
1628                        wiphy_name(priv->hw->wiphy), ret);
1629
1630         mutex_unlock(&priv->mtx);
1631 }
1632
1633 /* Submit Rx urb back to the device */
1634 static void at76_work_submit_rx(struct work_struct *work)
1635 {
1636         struct at76_priv *priv = container_of(work, struct at76_priv,
1637                                               work_submit_rx);
1638
1639         mutex_lock(&priv->mtx);
1640         at76_submit_rx_urb(priv);
1641         mutex_unlock(&priv->mtx);
1642 }
1643
1644 static void at76_rx_tasklet(unsigned long param)
1645 {
1646         struct urb *urb = (struct urb *)param;
1647         struct at76_priv *priv = urb->context;
1648         struct at76_rx_buffer *buf;
1649         struct ieee80211_rx_status rx_status = { 0 };
1650
1651         if (priv->device_unplugged) {
1652                 at76_dbg(DBG_DEVSTART, "device unplugged");
1653                 if (urb)
1654                         at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1655                 return;
1656         }
1657
1658         if (!priv->rx_skb || !priv->rx_skb->data)
1659                 return;
1660
1661         buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1662
1663         if (urb->status != 0) {
1664                 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1665                         at76_dbg(DBG_URB,
1666                                  "%s %s: - nonzero Rx bulk status received: %d",
1667                                  __func__, wiphy_name(priv->hw->wiphy),
1668                                  urb->status);
1669                 return;
1670         }
1671
1672         at76_dbg(DBG_RX_ATMEL_HDR,
1673                  "%s: rx frame: rate %d rssi %d noise %d link %d",
1674                  wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1675                  buf->noise_level, buf->link_quality);
1676
1677         skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength) + AT76_RX_HDRLEN);
1678         at76_dbg_dump(DBG_RX_DATA, &priv->rx_skb->data[AT76_RX_HDRLEN],
1679                       priv->rx_skb->len, "RX: len=%d", (int)(priv->rx_skb->len - AT76_RX_HDRLEN));
1680
1681         rx_status.signal = buf->rssi;
1682         rx_status.rate_idx = buf->rx_rate;      /* FIXME: is rate_idx still present in structure? */
1683         rx_status.flag |= RX_FLAG_DECRYPTED;
1684         rx_status.flag |= RX_FLAG_IV_STRIPPED;
1685
1686         skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1687         at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1688                  priv->rx_skb->len, priv->rx_skb->data_len);
1689         ieee80211_rx_irqsafe(priv->hw, priv->rx_skb, &rx_status);
1690
1691         /* Use a new skb for the next receive */
1692         priv->rx_skb = NULL;
1693
1694         at76_submit_rx_urb(priv);
1695 }
1696
1697 /* Load firmware into kernel memory and parse it */
1698 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1699                                           enum board_type board_type)
1700 {
1701         int ret;
1702         char *str;
1703         struct at76_fw_header *fwh;
1704         struct fwentry *fwe = &firmwares[board_type];
1705
1706         mutex_lock(&fw_mutex);
1707
1708         if (fwe->loaded) {
1709                 at76_dbg(DBG_FW, "re-using previously loaded fw");
1710                 goto exit;
1711         }
1712
1713         at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1714         ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1715         if (ret < 0) {
1716                 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1717                            fwe->fwname);
1718                 dev_printk(KERN_ERR, &udev->dev,
1719                            "you may need to download the firmware from "
1720                            "http://developer.berlios.de/projects/at76c503a/\n");
1721                 goto exit;
1722         }
1723
1724         at76_dbg(DBG_FW, "got it.");
1725         fwh = (struct at76_fw_header *)(fwe->fw->data);
1726
1727         if (fwe->fw->size <= sizeof(*fwh)) {
1728                 dev_printk(KERN_ERR, &udev->dev,
1729                            "firmware is too short (0x%zx)\n", fwe->fw->size);
1730                 goto exit;
1731         }
1732
1733         /* CRC currently not checked */
1734         fwe->board_type = le32_to_cpu(fwh->board_type);
1735         if (fwe->board_type != board_type) {
1736                 dev_printk(KERN_ERR, &udev->dev,
1737                            "board type mismatch, requested %u, got %u\n",
1738                            board_type, fwe->board_type);
1739                 goto exit;
1740         }
1741
1742         fwe->fw_version.major = fwh->major;
1743         fwe->fw_version.minor = fwh->minor;
1744         fwe->fw_version.patch = fwh->patch;
1745         fwe->fw_version.build = fwh->build;
1746
1747         str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1748         fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1749         fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1750         fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1751         fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1752
1753         fwe->loaded = 1;
1754
1755         dev_printk(KERN_DEBUG, &udev->dev,
1756                    "using firmware %s (version %d.%d.%d-%d)\n",
1757                    fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1758
1759         at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1760                  le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1761                  le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1762         at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1763
1764 exit:
1765         mutex_unlock(&fw_mutex);
1766
1767         if (fwe->loaded)
1768                 return fwe;
1769         else
1770                 return NULL;
1771 }
1772
1773 static void at76_mac80211_tx_callback(struct urb *urb)
1774 {
1775         struct at76_priv *priv = urb->context;
1776         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1777
1778         at76_dbg(DBG_MAC80211, "%s()", __func__);
1779
1780         switch (urb->status) {
1781         case 0:
1782                 /* success */
1783                 info->flags |= IEEE80211_TX_STAT_ACK;   /* FIXME: is the frame really ACKed when tx_callback is called ? */
1784                 break;
1785         case -ENOENT:
1786         case -ECONNRESET:
1787                 /* fail, urb has been unlinked */
1788                 /* FIXME: add error message */
1789                 break;
1790         default:
1791                 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1792                          __func__, urb->status);
1793                 break;
1794         }
1795
1796         memset(&info->status, 0, sizeof(info->status));
1797
1798         ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1799
1800         priv->tx_skb = NULL;
1801
1802         ieee80211_wake_queues(priv->hw);
1803 }
1804
1805 static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1806 {
1807         struct at76_priv *priv = hw->priv;
1808         struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1809         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1810         int padding, submit_len, ret;
1811
1812         at76_dbg(DBG_MAC80211, "%s()", __func__);
1813
1814         if (priv->tx_urb->status == -EINPROGRESS) {
1815                 printk(KERN_ERR "%s: %s called while tx urb is pending\n",
1816                        wiphy_name(priv->hw->wiphy), __func__);
1817                 return NETDEV_TX_BUSY;
1818         }
1819
1820         ieee80211_stop_queues(hw);
1821
1822         at76_ledtrig_tx_activity();     /* tell ledtrigger we send a packet */
1823
1824         WARN_ON(priv->tx_skb != NULL);
1825
1826         priv->tx_skb = skb;
1827         padding = at76_calc_padding(skb->len);
1828         submit_len = AT76_TX_HDRLEN + skb->len + padding;
1829
1830         /* setup 'Atmel' header */
1831         memset(tx_buffer, 0, sizeof(*tx_buffer));
1832         tx_buffer->padding = padding;
1833         tx_buffer->wlength = cpu_to_le16(skb->len);
1834         tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1835         if (FIRMWARE_IS_WPA(priv->fw_version) && info->control.hw_key) {
1836                 tx_buffer->key_id = (info->control.hw_key->keyidx);
1837                 tx_buffer->cipher_type = priv->keys[info->control.hw_key->keyidx].cipher;
1838                 tx_buffer->cipher_length = priv->keys[info->control.hw_key->keyidx].keylen;
1839                 tx_buffer->reserved = 0;
1840         } else {
1841                 tx_buffer->key_id = 0;
1842                 tx_buffer->cipher_type = 0;
1843                 tx_buffer->cipher_length = 0;
1844                 tx_buffer->reserved = 0;
1845         };
1846         /* memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved)); */
1847         memcpy(tx_buffer->packet, skb->data, skb->len);
1848
1849         at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1850                  wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1851                  tx_buffer->padding, tx_buffer->tx_rate);
1852
1853         /* send stuff */
1854         at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1855                       "%s(): tx_buffer %d bytes:", __func__, submit_len);
1856         usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1857                           submit_len, at76_mac80211_tx_callback, priv);
1858         ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1859         if (ret) {
1860                 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1861                        wiphy_name(priv->hw->wiphy), ret);
1862                 if (ret == -EINVAL)
1863                         printk(KERN_ERR
1864                                "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
1865                                wiphy_name(priv->hw->wiphy), priv->tx_urb,
1866                                priv->tx_urb->hcpriv, priv->tx_urb->complete);
1867         }
1868
1869         return 0;
1870 }
1871
1872 static int at76_mac80211_start(struct ieee80211_hw *hw)
1873 {
1874         struct at76_priv *priv = hw->priv;
1875         int ret;
1876
1877         at76_dbg(DBG_MAC80211, "%s()", __func__);
1878
1879         mutex_lock(&priv->mtx);
1880
1881         ret = at76_submit_rx_urb(priv);
1882         if (ret < 0) {
1883                 printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
1884                        wiphy_name(priv->hw->wiphy), ret);
1885                 goto error;
1886         }
1887
1888         at76_startup_device(priv);
1889
1890         at76_start_monitor(priv);
1891
1892 error:
1893         mutex_unlock(&priv->mtx);
1894
1895         return 0;
1896 }
1897
1898 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1899 {
1900         struct at76_priv *priv = hw->priv;
1901
1902         at76_dbg(DBG_MAC80211, "%s()", __func__);
1903
1904         mutex_lock(&priv->mtx);
1905
1906         if (!priv->device_unplugged) {
1907                 /* We are called by "ifconfig ethX down", not because the
1908                  * device is not available anymore. */
1909                 if (at76_set_radio(priv, 0) == 1)
1910                         at76_wait_completion(priv, CMD_RADIO_ON);
1911
1912                 /* We unlink rx_urb because at76_open() re-submits it.
1913                  * If unplugged, at76_delete_device() takes care of it. */
1914                 usb_kill_urb(priv->rx_urb);
1915         }
1916
1917         mutex_unlock(&priv->mtx);
1918 }
1919
1920 static int at76_add_interface(struct ieee80211_hw *hw,
1921                               struct ieee80211_if_init_conf *conf)
1922 {
1923         struct at76_priv *priv = hw->priv;
1924         int ret = 0;
1925
1926         at76_dbg(DBG_MAC80211, "%s()", __func__);
1927
1928         mutex_lock(&priv->mtx);
1929
1930         switch (conf->type) {
1931         case NL80211_IFTYPE_STATION:
1932                 priv->iw_mode = IW_MODE_INFRA;
1933                 break;
1934         default:
1935                 ret = -EOPNOTSUPP;
1936                 goto exit;
1937         }
1938
1939 exit:
1940         mutex_unlock(&priv->mtx);
1941
1942         return ret;
1943 }
1944
1945 static void at76_remove_interface(struct ieee80211_hw *hw,
1946                                   struct ieee80211_if_init_conf *conf)
1947 {
1948         at76_dbg(DBG_MAC80211, "%s()", __func__);
1949 }
1950
1951 static int at76_join(struct at76_priv *priv)
1952 {
1953         struct at76_req_join join;
1954         int ret;
1955
1956         memset(&join, 0, sizeof(struct at76_req_join));
1957         memcpy(join.essid, priv->essid, priv->essid_size);
1958         join.essid_size = priv->essid_size;
1959         memcpy(join.bssid, priv->bssid, ETH_ALEN);
1960         join.bss_type = INFRASTRUCTURE_MODE;
1961         join.channel = priv->channel;
1962         join.timeout = cpu_to_le16(2000);
1963
1964         at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1965         ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1966                                     sizeof(struct at76_req_join));
1967
1968         if (ret < 0) {
1969                 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1970                        wiphy_name(priv->hw->wiphy), ret);
1971                 return 0;
1972         }
1973
1974         ret = at76_wait_completion(priv, CMD_JOIN);
1975         at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1976         if (ret != CMD_STATUS_COMPLETE) {
1977                 printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
1978                        wiphy_name(priv->hw->wiphy), ret);
1979                 return 0;
1980         }
1981
1982         at76_set_tkip_bssid(priv, priv->bssid);
1983         at76_set_pm_mode(priv);
1984
1985         return 0;
1986 }
1987
1988 static void at76_dwork_hw_scan(struct work_struct *work)
1989 {
1990         struct at76_priv *priv = container_of(work, struct at76_priv,
1991                                               dwork_hw_scan.work);
1992         int ret;
1993
1994         ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1995         at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1996
1997         /* FIXME: add maximum time for scan to complete */
1998
1999         if (ret != CMD_STATUS_COMPLETE) {
2000                 queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
2001                                    SCAN_POLL_INTERVAL);
2002                 goto exit;
2003         }
2004
2005         ieee80211_scan_completed(priv->hw);
2006
2007         if (is_valid_ether_addr(priv->bssid)) {
2008                 ieee80211_wake_queues(priv->hw);
2009                 at76_join(priv);
2010         }
2011
2012         ieee80211_wake_queues(priv->hw);
2013
2014 exit:
2015         return;
2016 }
2017
2018 static int at76_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
2019 {
2020         struct at76_priv *priv = hw->priv;
2021         struct at76_req_scan scan;
2022         int ret;
2023
2024         at76_dbg(DBG_MAC80211, "%s():", __func__);
2025         at76_dbg_dump(DBG_MAC80211, ssid, len, "ssid %zd bytes:", len);
2026
2027         mutex_lock(&priv->mtx);
2028
2029         ieee80211_stop_queues(hw);
2030
2031         memset(&scan, 0, sizeof(struct at76_req_scan));
2032         memset(scan.bssid, 0xFF, ETH_ALEN);
2033         scan.scan_type = SCAN_TYPE_ACTIVE;
2034         if (priv->essid_size > 0) {
2035                 memcpy(scan.essid, ssid, len);
2036                 scan.essid_size = len;
2037         }
2038         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
2039         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
2040         scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
2041         scan.international_scan = 0;
2042
2043         at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
2044         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
2045
2046         if (ret < 0) {
2047                 err("CMD_SCAN failed: %d", ret);
2048                 goto exit;
2049         }
2050
2051         queue_delayed_work(priv->hw->workqueue, &priv->dwork_hw_scan,
2052                            SCAN_POLL_INTERVAL);
2053
2054 exit:
2055         mutex_unlock(&priv->mtx);
2056
2057         return 0;
2058 }
2059
2060 static int at76_config(struct ieee80211_hw *hw, u32 changed)
2061 {
2062         struct at76_priv *priv = hw->priv;
2063         struct ieee80211_conf *conf = &hw->conf;
2064
2065         at76_dbg(DBG_MAC80211, "%s(): channel %d radio %d",
2066                  __func__, conf->channel->hw_value, conf->radio_enabled);
2067         at76_dbg_dump(DBG_MAC80211, priv->essid, priv->essid_size, "ssid:");
2068         at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
2069
2070         mutex_lock(&priv->mtx);
2071
2072         priv->channel = conf->channel->hw_value;
2073
2074         if (is_valid_ether_addr(priv->bssid)) {
2075                 at76_join(priv);
2076                 ieee80211_wake_queues(priv->hw);
2077         } else {
2078                 ieee80211_stop_queues(priv->hw);
2079                 at76_start_monitor(priv);
2080         };
2081
2082         mutex_unlock(&priv->mtx);
2083
2084         return 0;
2085 }
2086
2087 static int at76_config_interface(struct ieee80211_hw *hw,
2088                                  struct ieee80211_vif *vif,
2089                                  struct ieee80211_if_conf *conf)
2090 {
2091         struct at76_priv *priv = hw->priv;
2092
2093         at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2094
2095         mutex_lock(&priv->mtx);
2096
2097         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2098 //      memcpy(priv->essid, conf->ssid, conf->ssid_len);
2099 //      priv->essid_size = conf->ssid_len;
2100
2101         if (is_valid_ether_addr(priv->bssid)) {
2102                 /* mac80211 is joining a bss */
2103                 ieee80211_wake_queues(priv->hw);
2104                 at76_join(priv);
2105         } else
2106                 ieee80211_stop_queues(priv->hw);
2107
2108         mutex_unlock(&priv->mtx);
2109
2110         return 0;
2111 }
2112
2113 /* must be atomic */
2114 static void at76_configure_filter(struct ieee80211_hw *hw,
2115                                   unsigned int changed_flags,
2116                                   unsigned int *total_flags, int mc_count,
2117                                   struct dev_addr_list *mc_list)
2118 {
2119         struct at76_priv *priv = hw->priv;
2120         int flags;
2121
2122         at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2123                  "total_flags=0x%08x mc_count=%d",
2124                  __func__, changed_flags, *total_flags, mc_count);
2125
2126         flags = changed_flags & AT76_SUPPORTED_FILTERS;
2127         *total_flags = AT76_SUPPORTED_FILTERS;
2128
2129         /* FIXME: access to priv->promisc should be protected with
2130          * priv->mtx, but it's impossible because this function needs to be
2131          * atomic */
2132
2133         if (flags && !priv->promisc) {
2134                 /* mac80211 wants us to enable promiscuous mode */
2135                 priv->promisc = 1;
2136         } else if (!flags && priv->promisc) {
2137                 /* we need to disable promiscuous mode */
2138                 priv->promisc = 0;
2139         } else
2140                 return;
2141
2142         queue_work(hw->workqueue, &priv->work_set_promisc);
2143 }
2144
2145 static int at76_set_key_oldfw(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2146                         const u8 *local_address, const u8 *address,
2147                         struct ieee80211_key_conf *key)
2148 {
2149         struct at76_priv *priv = hw->priv;
2150
2151         int i;
2152
2153         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2154                  "key->keylen %d",
2155                  __func__, cmd, key->alg, key->keyidx, key->keylen);
2156
2157         if (key->alg != ALG_WEP)
2158                 return -EOPNOTSUPP;
2159
2160         key->hw_key_idx = key->keyidx;
2161
2162         mutex_lock(&priv->mtx);
2163
2164         switch (cmd) {
2165         case SET_KEY:
2166                 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2167                 priv->wep_keys_len[key->keyidx] = key->keylen;
2168
2169                 /* FIXME: find out how to do this properly */
2170                 priv->wep_key_id = key->keyidx;
2171
2172                 break;
2173         case DISABLE_KEY:
2174         default:
2175                 priv->wep_keys_len[key->keyidx] = 0;
2176                 break;
2177         }
2178
2179         priv->wep_enabled = 0;
2180
2181         for (i = 0; i < WEP_KEYS; i++) {
2182                 if (priv->wep_keys_len[i] != 0)
2183                         priv->wep_enabled = 1;
2184         }
2185
2186         at76_startup_device(priv);
2187
2188         mutex_unlock(&priv->mtx);
2189
2190         return 0;
2191 }
2192
2193 static int at76_set_key_newfw(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2194                         const u8 *local_address, const u8 *address,
2195                         struct ieee80211_key_conf *key)
2196 {
2197         struct at76_priv *priv = hw->priv;
2198         int ret = -EOPNOTSUPP;
2199
2200         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2201                  "key->keylen %d",
2202                  __func__, cmd, key->alg, key->keyidx, key->keylen);
2203
2204         mutex_lock(&priv->mtx);
2205
2206         priv->mib_buf.type = MIB_MAC_ENCRYPTION;
2207
2208         if (cmd == DISABLE_KEY) {
2209                 priv->mib_buf.size = CIPHER_KEY_LEN;
2210                 priv->mib_buf.index = offsetof(struct mib_mac_encryption,
2211                                 cipher_default_keyvalue[key->keyidx]);
2212                 memset(priv->mib_buf.data.data, 0, CIPHER_KEY_LEN);
2213                 if (at76_set_mib(priv, &priv->mib_buf) != CMD_STATUS_COMPLETE)
2214                         ret = -EOPNOTSUPP; /* -EIO would be probably better */
2215                 else {
2216
2217                         priv->keys[key->keyidx].cipher = CIPHER_NONE;
2218                         priv->keys[key->keyidx].keylen = 0;
2219                 };
2220                 if (priv->default_group_key == key->keyidx)
2221                         priv->default_group_key = 0xff;
2222
2223                 if (priv->default_pairwise_key == key->keyidx)
2224                         priv->default_pairwise_key = 0xff;
2225                 /* If default pairwise key is removed, fall back to
2226                  * group key? */
2227                 ret = 0;
2228                 goto exit;
2229         };
2230
2231         if (cmd == SET_KEY) {
2232                 /* store key into MIB */
2233                 priv->mib_buf.size = CIPHER_KEY_LEN;
2234                 priv->mib_buf.index = offsetof(struct mib_mac_encryption,
2235                                 cipher_default_keyvalue[key->keyidx]);
2236                 memset(priv->mib_buf.data.data, 0, CIPHER_KEY_LEN);
2237                 memcpy(priv->mib_buf.data.data, key->key, key->keylen);
2238
2239                 switch (key->alg) {
2240                         case ALG_WEP:
2241                                 if (key->keylen == 5) {
2242                                         priv->keys[key->keyidx].cipher =
2243                                                 CIPHER_WEP64;
2244                                         priv->keys[key->keyidx].keylen = 8;
2245                                 } else if (key->keylen == 13) {
2246                                         priv->keys[key->keyidx].cipher =
2247                                                 CIPHER_WEP128;
2248                                         /* Firmware needs this */
2249                                         priv->keys[key->keyidx].keylen = 8;
2250                                 } else {
2251                                         ret = -EOPNOTSUPP;
2252                                         goto exit;
2253                                 };
2254                                 break;
2255                         case ALG_TKIP:
2256                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2257                                 priv->keys[key->keyidx].cipher = CIPHER_TKIP;
2258                                 priv->keys[key->keyidx].keylen = 12;
2259                                 break;
2260
2261                         case ALG_CCMP:
2262                                 if (!at76_is_505a(priv->board_type)) {
2263                                         ret = -EOPNOTSUPP;
2264                                         goto exit;
2265                                 };
2266                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2267                                 priv->keys[key->keyidx].cipher = CIPHER_CCMP;
2268                                 priv->keys[key->keyidx].keylen = 16;
2269                                 break;
2270
2271                         default:
2272                                 ret = -EOPNOTSUPP;
2273                                 goto exit;
2274
2275                 };
2276
2277                 priv->mib_buf.data.data[38] = priv->keys[key->keyidx].cipher;
2278                 priv->mib_buf.data.data[39] = 1; /* Taken from atmelwlandriver,
2279                                                     not documented */
2280
2281                 if (is_valid_ether_addr(address))
2282                         /* Pairwise key */
2283                         priv->mib_buf.data.data[39] |= (KEY_PAIRWISE | KEY_TX);
2284                 else if (is_broadcast_ether_addr(address))
2285                         /* Group key */
2286                         priv->mib_buf.data.data[39] |= (KEY_TX);
2287                 else    /* Key used only for transmission ??? */
2288                         priv->mib_buf.data.data[39] |= (KEY_TX);
2289
2290                 if (at76_set_mib(priv, &priv->mib_buf) !=
2291                                 CMD_STATUS_COMPLETE) {
2292                         ret = -EOPNOTSUPP; /* -EIO would be probably better */
2293                         goto exit;
2294                 };
2295
2296                 if ((key->alg == ALG_TKIP) || (key->alg == ALG_CCMP))
2297                         at76_reset_rsc(priv);
2298
2299                 key->hw_key_idx = key->keyidx;
2300
2301                 /* Set up default keys */
2302                 if (is_broadcast_ether_addr(address))
2303                         priv->default_group_key = key->keyidx;
2304                 if (is_valid_ether_addr(address))
2305                         priv->default_pairwise_key = key->keyidx;
2306
2307                 /* Set up encryption MIBs */
2308
2309                 /* first block of settings */
2310                 priv->mib_buf.size = 3;
2311                 priv->mib_buf.index = offsetof(struct mib_mac_encryption,
2312                                 privacy_invoked);
2313                 priv->mib_buf.data.data[0] = 1; /* privacy_invoked */
2314                 priv->mib_buf.data.data[1] = priv->default_pairwise_key;
2315                 priv->mib_buf.data.data[2] = priv->default_group_key;
2316
2317                 if ((ret = at76_set_mib(priv, &priv->mib_buf)) !=
2318                                 CMD_STATUS_COMPLETE)
2319                         goto exit;
2320
2321                 /* second block of settings */
2322                 priv->mib_buf.size = 3;
2323                 priv->mib_buf.index = offsetof(struct mib_mac_encryption,
2324                                 exclude_unencrypted);
2325                 priv->mib_buf.data.data[0] = 1; /* exclude_unencrypted */
2326                 priv->mib_buf.data.data[1] = 0; /* wep_encryption_type */
2327                 priv->mib_buf.data.data[2] = 0; /* ckip_key_permutation */
2328
2329                 if ((ret = at76_set_mib(priv, &priv->mib_buf)) !=
2330                                 CMD_STATUS_COMPLETE)
2331                         goto exit;
2332                 ret = 0;
2333         };
2334 exit:
2335         at76_dump_mib_mac_encryption(priv);
2336         mutex_unlock(&priv->mtx);
2337         return ret;
2338 }
2339
2340 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2341                         const u8 *local_address, const u8 *address,
2342                         struct ieee80211_key_conf *key)
2343 {
2344         struct at76_priv *priv = hw->priv;
2345
2346         // int i;
2347
2348         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2349                  "key->keylen %d",
2350                  __func__, cmd, key->alg, key->keyidx, key->keylen);
2351
2352         if (FIRMWARE_IS_WPA(priv->fw_version))
2353                 return at76_set_key_newfw(hw, cmd, local_address, address, key);
2354         else
2355                 return at76_set_key_oldfw(hw, cmd, local_address, address, key);
2356
2357 }
2358
2359 static const struct ieee80211_ops at76_ops = {
2360         .tx = at76_mac80211_tx,
2361         .add_interface = at76_add_interface,
2362         .remove_interface = at76_remove_interface,
2363         .config = at76_config,
2364         .config_interface = at76_config_interface,
2365         .configure_filter = at76_configure_filter,
2366         .start = at76_mac80211_start,
2367         .stop = at76_mac80211_stop,
2368         .hw_scan = at76_hw_scan,
2369         .set_key = at76_set_key,
2370 };
2371
2372 /* Allocate network device and initialize private data */
2373 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2374 {
2375         struct ieee80211_hw *hw;
2376         struct at76_priv *priv;
2377
2378         hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2379         if (!hw) {
2380                 printk(KERN_ERR DRIVER_NAME ": could not register"
2381                        " ieee80211_hw\n");
2382                 return NULL;
2383         }
2384
2385         priv = hw->priv;
2386         priv->hw = hw;
2387
2388         priv->udev = udev;
2389
2390         mutex_init(&priv->mtx);
2391         INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2392         INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2393         INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2394
2395         priv->rx_tasklet.func = at76_rx_tasklet;
2396         priv->rx_tasklet.data = 0;
2397
2398         priv->pm_mode = AT76_PM_OFF;
2399         priv->pm_period = 0;
2400
2401         /* unit us */
2402         priv->hw->channel_change_time = 100000;
2403
2404         return priv;
2405 }
2406
2407 static int at76_alloc_urbs(struct at76_priv *priv,
2408                            struct usb_interface *interface)
2409 {
2410         struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2411         int i;
2412         int buffer_size;
2413         struct usb_host_interface *iface_desc;
2414
2415         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2416
2417         at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2418                  interface->altsetting[0].desc.bNumEndpoints);
2419
2420         ep_in = NULL;
2421         ep_out = NULL;
2422         iface_desc = interface->cur_altsetting;
2423         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2424                 endpoint = &iface_desc->endpoint[i].desc;
2425
2426                 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2427                          __func__, i, endpoint->bEndpointAddress,
2428                          endpoint->bmAttributes);
2429
2430                 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2431                         ep_in = endpoint;
2432
2433                 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2434                         ep_out = endpoint;
2435         }
2436
2437         if (!ep_in || !ep_out) {
2438                 dev_printk(KERN_ERR, &interface->dev,
2439                            "bulk endpoints missing\n");
2440                 return -ENXIO;
2441         }
2442
2443         priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2444         priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2445
2446         priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2447         priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2448         if (!priv->rx_urb || !priv->tx_urb) {
2449                 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2450                 return -ENOMEM;
2451         }
2452
2453         buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2454         priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2455         if (!priv->bulk_out_buffer) {
2456                 dev_printk(KERN_ERR, &interface->dev,
2457                            "cannot allocate output buffer\n");
2458                 return -ENOMEM;
2459         }
2460
2461         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2462
2463         return 0;
2464 }
2465
2466 static struct ieee80211_rate at76_rates[] = {
2467         { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2468         { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2469         { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2470         { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2471 };
2472
2473 static struct ieee80211_channel at76_channels[] = {
2474         { .center_freq = 2412, .hw_value = 1 },
2475         { .center_freq = 2417, .hw_value = 2 },
2476         { .center_freq = 2422, .hw_value = 3 },
2477         { .center_freq = 2427, .hw_value = 4 },
2478         { .center_freq = 2432, .hw_value = 5 },
2479         { .center_freq = 2437, .hw_value = 6 },
2480         { .center_freq = 2442, .hw_value = 7 },
2481         { .center_freq = 2447, .hw_value = 8 },
2482         { .center_freq = 2452, .hw_value = 9 },
2483         { .center_freq = 2457, .hw_value = 10 },
2484         { .center_freq = 2462, .hw_value = 11 },
2485         { .center_freq = 2467, .hw_value = 12 },
2486         { .center_freq = 2472, .hw_value = 13 },
2487         { .center_freq = 2484, .hw_value = 14 }
2488 };
2489
2490 static struct ieee80211_supported_band at76_supported_band = {
2491         .channels = at76_channels,
2492         .n_channels = ARRAY_SIZE(at76_channels),
2493         .bitrates = at76_rates,
2494         .n_bitrates = ARRAY_SIZE(at76_rates),
2495 };
2496
2497 /* Register network device and initialize the hardware */
2498 static int at76_init_new_device(struct at76_priv *priv,
2499                                 struct usb_interface *interface)
2500 {
2501         int ret;
2502
2503         /* set up the endpoint information */
2504         /* check out the endpoints */
2505
2506         at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2507                  interface->cur_altsetting->desc.bNumEndpoints);
2508
2509         ret = at76_alloc_urbs(priv, interface);
2510         if (ret < 0)
2511                 goto exit;
2512
2513         /* MAC address */
2514         ret = at76_get_hw_config(priv);
2515         if (ret < 0) {
2516                 dev_printk(KERN_ERR, &interface->dev,
2517                            "cannot get MAC address\n");
2518                 goto exit;
2519         }
2520
2521         priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2522
2523         priv->channel = DEF_CHANNEL;
2524         priv->iw_mode = IW_MODE_INFRA;
2525         priv->rts_threshold = DEF_RTS_THRESHOLD;
2526         priv->frag_threshold = DEF_FRAG_THRESHOLD;
2527         priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2528         priv->txrate = TX_RATE_AUTO;
2529         priv->preamble_type = PREAMBLE_TYPE_LONG;
2530         priv->beacon_period = 100;
2531         priv->auth_mode = WLAN_AUTH_OPEN;
2532         priv->scan_min_time = DEF_SCAN_MIN_TIME;
2533         priv->scan_max_time = DEF_SCAN_MAX_TIME;
2534         priv->scan_mode = SCAN_TYPE_ACTIVE;
2535         priv->default_pairwise_key = 0xff;
2536         priv->default_group_key = 0xff;
2537
2538         /* mac80211 initialisation */
2539         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2540
2541         if (FIRMWARE_IS_WPA(priv->fw_version) &&
2542                 (at76_is_503rfmd(priv->board_type) ||
2543                  at76_is_505(priv->board_type)))
2544                 priv->hw->flags = IEEE80211_HW_SIGNAL_UNSPEC;
2545         else
2546                 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2547                                   IEEE80211_HW_SIGNAL_UNSPEC;
2548
2549         priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2550
2551         SET_IEEE80211_DEV(priv->hw, &interface->dev);
2552         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2553
2554         ret = ieee80211_register_hw(priv->hw);
2555         if (ret) {
2556                 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2557                        ret);
2558                 goto exit;
2559         }
2560
2561         priv->mac80211_registered = 1;
2562
2563         printk(KERN_INFO "%s: USB %s, MAC %s, firmware %d.%d.%d-%d\n",
2564                wiphy_name(priv->hw->wiphy),
2565                interface->dev.bus_id, mac2str(priv->mac_addr),
2566                priv->fw_version.major, priv->fw_version.minor,
2567                priv->fw_version.patch, priv->fw_version.build);
2568         printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n",
2569                wiphy_name(priv->hw->wiphy),
2570                priv->regulatory_domain, priv->domain->name);
2571         printk(KERN_INFO "%s: WPA support: ", wiphy_name(priv->hw->wiphy));
2572         if (!FIRMWARE_IS_WPA(priv->fw_version))
2573                 printk("none\n");
2574         else {
2575                 if (!at76_is_505a(priv->board_type))
2576                         printk("TKIP\n");
2577                 else
2578                         printk("TKIP, AES/CCMP\n");
2579         };
2580
2581 exit:
2582         return ret;
2583 }
2584
2585 static void at76_delete_device(struct at76_priv *priv)
2586 {
2587         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2588
2589         /* The device is gone, don't bother turning it off */
2590         priv->device_unplugged = 1;
2591
2592         if (priv->mac80211_registered)
2593                 ieee80211_unregister_hw(priv->hw);
2594
2595         /* assuming we used keventd, it must quiesce too */
2596         flush_scheduled_work();
2597
2598         kfree(priv->bulk_out_buffer);
2599
2600         if (priv->tx_urb) {
2601                 usb_kill_urb(priv->tx_urb);
2602                 usb_free_urb(priv->tx_urb);
2603         }
2604         if (priv->rx_urb) {
2605                 usb_kill_urb(priv->rx_urb);
2606                 usb_free_urb(priv->rx_urb);
2607         }
2608
2609         at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2610
2611         if (priv->rx_skb)
2612                 kfree_skb(priv->rx_skb);
2613
2614         usb_put_dev(priv->udev);
2615
2616         at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2617                  __func__);
2618         ieee80211_free_hw(priv->hw);
2619
2620         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2621 }
2622
2623 static int at76_probe(struct usb_interface *interface,
2624                       const struct usb_device_id *id)
2625 {
2626         int ret;
2627         struct at76_priv *priv;
2628         struct fwentry *fwe;
2629         struct usb_device *udev;
2630         int op_mode;
2631         int need_ext_fw = 0;
2632         struct mib_fw_version fwv;
2633         int board_type = (int)id->driver_info;
2634
2635         udev = usb_get_dev(interface_to_usbdev(interface));
2636
2637         /* Load firmware into kernel memory */
2638         fwe = at76_load_firmware(udev, board_type);
2639         if (!fwe) {
2640                 ret = -ENOENT;
2641                 goto error;
2642         }
2643
2644         op_mode = at76_get_op_mode(udev);
2645
2646         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2647
2648         /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2649            we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2650
2651         if (op_mode == OPMODE_HW_CONFIG_MODE) {
2652                 dev_printk(KERN_ERR, &interface->dev,
2653                            "cannot handle a device in HW_CONFIG_MODE\n");
2654                 ret = -EBUSY;
2655                 goto error;
2656         }
2657
2658         if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2659             && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2660                 /* download internal firmware part */
2661                 dev_printk(KERN_DEBUG, &interface->dev,
2662                            "downloading internal firmware\n");
2663                 ret = at76_load_internal_fw(udev, fwe);
2664                 if (ret < 0) {
2665                         dev_printk(KERN_ERR, &interface->dev,
2666                                    "error %d downloading internal firmware\n",
2667                                    ret);
2668                         goto error;
2669                 }
2670                 usb_put_dev(udev);
2671                 return ret;
2672         }
2673
2674         /* Internal firmware already inside the device.  Get firmware
2675          * version to test if external firmware is loaded.
2676          * This works only for newer firmware, e.g. the Intersil 0.90.x
2677          * says "control timeout on ep0in" and subsequent
2678          * at76_get_op_mode() fail too :-( */
2679
2680         /* if version >= 0.100.x.y or device with built-in flash we can
2681          * query the device for the fw version */
2682         if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2683             || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2684                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2685                 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2686                         need_ext_fw = 1;
2687         } else
2688                 /* No way to check firmware version, reload to be sure */
2689                 need_ext_fw = 1;
2690
2691         if (need_ext_fw) {
2692                 dev_printk(KERN_DEBUG, &interface->dev,
2693                            "downloading external firmware\n");
2694
2695                 ret = at76_load_external_fw(udev, fwe);
2696                 if (ret)
2697                         goto error;
2698
2699                 /* Re-check firmware version */
2700                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2701                 if (ret < 0) {
2702                         dev_printk(KERN_ERR, &interface->dev,
2703                                    "error %d getting firmware version\n", ret);
2704                         goto error;
2705                 }
2706         }
2707
2708         priv = at76_alloc_new_device(udev);
2709         if (!priv) {
2710                 ret = -ENOMEM;
2711                 goto error;
2712         }
2713
2714         usb_set_intfdata(interface, priv);
2715
2716         memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2717         priv->board_type = board_type;
2718
2719         ret = at76_init_new_device(priv, interface);
2720         if (ret < 0)
2721                 at76_delete_device(priv);
2722
2723         return ret;
2724
2725 error:
2726         usb_put_dev(udev);
2727         return ret;
2728 }
2729
2730 static void at76_disconnect(struct usb_interface *interface)
2731 {
2732         struct at76_priv *priv;
2733
2734         priv = usb_get_intfdata(interface);
2735         usb_set_intfdata(interface, NULL);
2736
2737         /* Disconnect after loading internal firmware */
2738         if (!priv)
2739                 return;
2740
2741         printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
2742         at76_delete_device(priv);
2743         dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2744 }
2745
2746 /* Structure for registering this driver with the USB subsystem */
2747 static struct usb_driver at76_driver = {
2748         .name = DRIVER_NAME,
2749         .probe = at76_probe,
2750         .disconnect = at76_disconnect,
2751         .id_table = dev_table,
2752 };
2753
2754 static int __init at76_mod_init(void)
2755 {
2756         int result;
2757
2758         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2759
2760         mutex_init(&fw_mutex);
2761
2762         /* register this driver with the USB subsystem */
2763         result = usb_register(&at76_driver);
2764         if (result < 0)
2765                 printk(KERN_ERR DRIVER_NAME
2766                        ": usb_register failed (status %d)\n", result);
2767
2768         led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2769         return result;
2770 }
2771
2772 static void __exit at76_mod_exit(void)
2773 {
2774         int i;
2775
2776         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2777         usb_deregister(&at76_driver);
2778         for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2779                 if (firmwares[i].fw)
2780                         release_firmware(firmwares[i].fw);
2781         }
2782         led_trigger_unregister_simple(ledtrig_tx);
2783 }
2784
2785 module_param_named(debug, at76_debug, int, 0600);
2786 MODULE_PARM_DESC(debug, "Debugging level");
2787
2788 module_init(at76_mod_init);
2789 module_exit(at76_mod_exit);
2790
2791 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2792 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2793 MODULE_AUTHOR("Alex <alex@foogod.com>");
2794 MODULE_AUTHOR("Nick Jones");
2795 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2796 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2797 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2798 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2799 MODULE_AUTHOR("Milan Plzik <milan.plzik@gmail.com>");
2800 MODULE_DESCRIPTION(DRIVER_DESC);
2801 MODULE_LICENSE("GPL");