drivers/net/wireless/at76c50x-usb.c

   1 /*
   2  * at76c503/at76c505 USB driver
   3  *
   4  * Copyright (c) 2002 - 2003 Oliver Kurth
   5  * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
   6  * Copyright (c) 2004 Nick Jones
   7  * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
   8  * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
   9  * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
  10  * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This file is part of the Berlios driver for WLAN USB devices based on the
  18  * Atmel AT76C503A/505/505A.
  19  *
  20  * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
  21  *
  22  * TODO list is at the wiki:
  23  *
  24  * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
  25  *
  26  */
  27
  28 #include <linux/init.h>
  29 #include <linux/kernel.h>
  30 #include <linux/sched.h>
  31 #include <linux/errno.h>
  32 #include <linux/slab.h>
  33 #include <linux/module.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/list.h>
  36 #include <linux/usb.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/if_arp.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/ethtool.h>
  41 #include <linux/wireless.h>
  42 #include <net/iw_handler.h>
  43 #include <net/ieee80211_radiotap.h>
  44 #include <linux/firmware.h>
  45 #include <linux/leds.h>
  46 #include <net/mac80211.h>
  47
  48 #include "at76c50x-usb.h"
  49
  50 /* Version information */
  51 #define DRIVER_NAME "at76c50x-usb"
  52 #define DRIVER_VERSION  "0.17"
  53 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
  54
  55 /* at76_debug bits */
  56 #define DBG_PROGRESS            0x00000001      /* authentication/accociation */
  57 #define DBG_BSS_TABLE           0x00000002      /* show BSS table after scans */
  58 #define DBG_IOCTL               0x00000004      /* ioctl calls / settings */
  59 #define DBG_MAC_STATE           0x00000008      /* MAC state transitions */
  60 #define DBG_TX_DATA             0x00000010      /* tx header */
  61 #define DBG_TX_DATA_CONTENT     0x00000020      /* tx content */
  62 #define DBG_TX_MGMT             0x00000040      /* tx management */
  63 #define DBG_RX_DATA             0x00000080      /* rx data header */
  64 #define DBG_RX_DATA_CONTENT     0x00000100      /* rx data content */
  65 #define DBG_RX_MGMT             0x00000200      /* rx mgmt frame headers */
  66 #define DBG_RX_BEACON           0x00000400      /* rx beacon */
  67 #define DBG_RX_CTRL             0x00000800      /* rx control */
  68 #define DBG_RX_MGMT_CONTENT     0x00001000      /* rx mgmt content */
  69 #define DBG_RX_FRAGS            0x00002000      /* rx data fragment handling */
  70 #define DBG_DEVSTART            0x00004000      /* fw download, device start */
  71 #define DBG_URB                 0x00008000      /* rx urb status, ... */
  72 #define DBG_RX_ATMEL_HDR        0x00010000      /* Atmel-specific Rx headers */
  73 #define DBG_PROC_ENTRY          0x00020000      /* procedure entries/exits */
  74 #define DBG_PM                  0x00040000      /* power management settings */
  75 #define DBG_BSS_MATCH           0x00080000      /* BSS match failures */
  76 #define DBG_PARAMS              0x00100000      /* show configured parameters */
  77 #define DBG_WAIT_COMPLETE       0x00200000      /* command completion */
  78 #define DBG_RX_FRAGS_SKB        0x00400000      /* skb header of Rx fragments */
  79 #define DBG_BSS_TABLE_RM        0x00800000      /* purging bss table entries */
  80 #define DBG_MONITOR_MODE        0x01000000      /* monitor mode */
  81 #define DBG_MIB                 0x02000000      /* dump all MIBs on startup */
  82 #define DBG_MGMT_TIMER          0x04000000      /* dump mgmt_timer ops */
  83 #define DBG_WE_EVENTS           0x08000000      /* dump wireless events */
  84 #define DBG_FW                  0x10000000      /* firmware download */
  85 #define DBG_DFU                 0x20000000      /* device firmware upgrade */
  86 #define DBG_CMD                 0x40000000
  87 #define DBG_MAC80211            0x80000000
  88
  89 #define DBG_DEFAULTS            0
  90
  91 /* Use our own dbg macro */
  92 #define at76_dbg(bits, format, arg...)                                  \
  93 do {                                                                    \
  94         if (at76_debug & (bits))                                        \
  95                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
  96 } while (0)
  97
  98 #define at76_dbg_dump(bits, buf, len, format, arg...)                   \
  99 do {                                                                    \
 100         if (at76_debug & (bits)) {                                      \
 101                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
 102                 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
 103         }                                                               \
 104 } while (0)
 105
 106 static uint at76_debug = DBG_DEFAULTS;
 107
 108 /* Protect against concurrent firmware loading and parsing */
 109 static struct mutex fw_mutex;
 110
 111 static struct fwentry firmwares[] = {
 112         [0] = { "" },
 113         [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
 114         [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
 115         [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
 116         [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
 117         [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
 118         [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
 119         [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
 120         [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
 121 };
 122 MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
 123 MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
 124 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
 125 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
 126 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
 127 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
 128 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
 129 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
 130
 131 #define USB_DEVICE_DATA(__ops)  .driver_info = (kernel_ulong_t)(__ops)
 132
 133 static struct usb_device_id dev_table[] = {
 134         /*
 135          * at76c503-i3861
 136          */
 137         /* Generic AT76C503/3861 device */
 138         { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 139         /* Linksys WUSB11 v2.1/v2.6 */
 140         { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 141         /* Netgear MA101 rev. A */
 142         { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 143         /* Tekram U300C / Allnet ALL0193 */
 144         { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 145         /* HP HN210W J7801A */
 146         { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 147         /* Sitecom/Z-Com/Zyxel M4Y-750 */
 148         { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 149         /* Dynalink/Askey WLL013 (intersil) */
 150         { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 151         /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
 152         { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 153         /* BenQ AWL300 */
 154         { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 155         /* Addtron AWU-120, Compex WLU11 */
 156         { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 157         /* Intel AP310 AnyPoint II USB */
 158         { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 159         /* Dynalink L11U */
 160         { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 161         /* Arescom WL-210, FCC id 07J-GL2411USB */
 162         { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 163         /* I-O DATA WN-B11/USB */
 164         { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 165         /* BT Voyager 1010 */
 166         { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 167         /*
 168          * at76c503-i3863
 169          */
 170         /* Generic AT76C503/3863 device */
 171         { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 172         /* Samsung SWL-2100U */
 173         { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 174         /*
 175          * at76c503-rfmd
 176          */
 177         /* Generic AT76C503/RFMD device */
 178         { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 179         /* Dynalink/Askey WLL013 (rfmd) */
 180         { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
 181         /* Linksys WUSB11 v2.6 */
 182         { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
 183         /* Network Everywhere NWU11B */
 184         { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
 185         /* Netgear MA101 rev. B */
 186         { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 187         /* D-Link DWL-120 rev. E */
 188         { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
 189         /* Actiontec 802UAT1, HWU01150-01UK */
 190         { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 191         /* AirVast W-Buddie WN210 */
 192         { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 193         /* Dick Smith Electronics XH1153 802.11b USB adapter */
 194         { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
 195         /* CNet CNUSB611 */
 196         { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
 197         /* FiberLine FL-WL200U */
 198         { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
 199         /* BenQ AWL400 USB stick */
 200         { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
 201         /* 3Com 3CRSHEW696 */
 202         { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
 203         /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
 204         { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
 205         /* Belkin F5D6050, version 2 */
 206         { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
 207         /* iBlitzz, BWU613 (not *B or *SB) */
 208         { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
 209         /* Gigabyte GN-WLBM101 */
 210         { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
 211         /* Planex GW-US11S */
 212         { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
 213         /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
 214         { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
 215         /* Corega Wireless LAN USB-11 mini */
 216         { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
 217         /* Corega Wireless LAN USB-11 mini2 */
 218         { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
 219         /* Uniden PCW100 */
 220         { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
 221         /*
 222          * at76c503-rfmd-acc
 223          */
 224         /* SMC2664W */
 225         { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
 226         /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
 227         { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
 228         /*
 229          * at76c505-rfmd
 230          */
 231         /* Generic AT76C505/RFMD */
 232         { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
 233         /*
 234          * at76c505-rfmd2958
 235          */
 236         /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
 237         { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 238         /* Fiberline FL-WL240U */
 239         { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
 240         /* CNet CNUSB-611G */
 241         { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
 242         /* Linksys WUSB11 v2.8 */
 243         { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
 244         /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
 245         { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
 246         /* Corega WLAN USB Stick 11 */
 247         { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 248         /* Microstar MSI Box MS6978 */
 249         { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
 250         /*
 251          * at76c505a-rfmd2958
 252          */
 253         /* Generic AT76C505A device */
 254         { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
 255         /* Generic AT76C505AS device */
 256         { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
 257         /* Siemens Gigaset USB WLAN Adapter 11 */
 258         { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
 259         /* OQO Model 01+ Internal Wi-Fi */
 260         { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
 261         /*
 262          * at76c505amx-rfmd
 263          */
 264         /* Generic AT76C505AMX device */
 265         { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
 266         { }
 267 };
 268
 269 MODULE_DEVICE_TABLE(usb, dev_table);
 270
 271 /* Supported rates of this hardware, bit 7 marks basic rates */
 272 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
 273
 274 static const char *const preambles[] = { "long", "short", "auto" };
 275
 276 /* Firmware download */
 277 /* DFU states */
 278 #define STATE_IDLE                      0x00
 279 #define STATE_DETACH                    0x01
 280 #define STATE_DFU_IDLE                  0x02
 281 #define STATE_DFU_DOWNLOAD_SYNC         0x03
 282 #define STATE_DFU_DOWNLOAD_BUSY         0x04
 283 #define STATE_DFU_DOWNLOAD_IDLE         0x05
 284 #define STATE_DFU_MANIFEST_SYNC         0x06
 285 #define STATE_DFU_MANIFEST              0x07
 286 #define STATE_DFU_MANIFEST_WAIT_RESET   0x08
 287 #define STATE_DFU_UPLOAD_IDLE           0x09
 288 #define STATE_DFU_ERROR                 0x0a
 289
 290 /* DFU commands */
 291 #define DFU_DETACH                      0
 292 #define DFU_DNLOAD                      1
 293 #define DFU_UPLOAD                      2
 294 #define DFU_GETSTATUS                   3
 295 #define DFU_CLRSTATUS                   4
 296 #define DFU_GETSTATE                    5
 297 #define DFU_ABORT                       6
 298
 299 #define FW_BLOCK_SIZE 1024
 300
 301 struct dfu_status {
 302         unsigned char status;
 303         unsigned char poll_timeout[3];
 304         unsigned char state;
 305         unsigned char string;
 306 } __packed;
 307
 308 static inline int at76_is_intersil(enum board_type board)
 309 {
 310         return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
 311 }
 312
 313 static inline int at76_is_503rfmd(enum board_type board)
 314 {
 315         return (board == BOARD_503 || board == BOARD_503_ACC);
 316 }
 317
 318 static inline int at76_is_505a(enum board_type board)
 319 {
 320         return (board == BOARD_505A || board == BOARD_505AMX);
 321 }
 322
 323 /* Load a block of the first (internal) part of the firmware */
 324 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
 325                                   void *block, int size)
 326 {
 327         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
 328                                USB_TYPE_CLASS | USB_DIR_OUT |
 329                                USB_RECIP_INTERFACE, blockno, 0, block, size,
 330                                USB_CTRL_GET_TIMEOUT);
 331 }
 332
 333 static int at76_dfu_get_status(struct usb_device *udev,
 334                                struct dfu_status *status)
 335 {
 336         int ret;
 337
 338         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
 339                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 340                               0, 0, status, sizeof(struct dfu_status),
 341                               USB_CTRL_GET_TIMEOUT);
 342         return ret;
 343 }
 344
 345 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
 346 {
 347         int ret;
 348
 349         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
 350                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 351                               0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
 352         return ret;
 353 }
 354
 355 /* Convert timeout from the DFU status to jiffies */
 356 static inline unsigned long at76_get_timeout(struct dfu_status *s)
 357 {
 358         return msecs_to_jiffies((s->poll_timeout[2] << 16)
 359                                 | (s->poll_timeout[1] << 8)
 360                                 | (s->poll_timeout[0]));
 361 }
 362
 363 /* Load internal firmware from the buffer.  If manifest_sync_timeout > 0, use
 364  * its value in jiffies in the MANIFEST_SYNC state.  */
 365 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 366                                 int manifest_sync_timeout)
 367 {
 368         u8 *block;
 369         struct dfu_status dfu_stat_buf;
 370         int ret = 0;
 371         int need_dfu_state = 1;
 372         int is_done = 0;
 373         u8 dfu_state = 0;
 374         u32 dfu_timeout = 0;
 375         int bsize = 0;
 376         int blockno = 0;
 377
 378         at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
 379                  manifest_sync_timeout);
 380
 381         if (!size) {
 382                 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
 383                 return -EINVAL;
 384         }
 385
 386         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
 387         if (!block)
 388                 return -ENOMEM;
 389
 390         do {
 391                 if (need_dfu_state) {
 392                         ret = at76_dfu_get_state(udev, &dfu_state);
 393                         if (ret < 0) {
 394                                 dev_printk(KERN_ERR, &udev->dev,
 395                                            "cannot get DFU state: %d\n", ret);
 396                                 goto exit;
 397                         }
 398                         need_dfu_state = 0;
 399                 }
 400
 401                 switch (dfu_state) {
 402                 case STATE_DFU_DOWNLOAD_SYNC:
 403                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
 404                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 405                         if (ret >= 0) {
 406                                 dfu_state = dfu_stat_buf.state;
 407                                 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 408                                 need_dfu_state = 0;
 409                         } else
 410                                 dev_printk(KERN_ERR, &udev->dev,
 411                                            "at76_dfu_get_status returned %d\n",
 412                                            ret);
 413                         break;
 414
 415                 case STATE_DFU_DOWNLOAD_BUSY:
 416                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
 417                         need_dfu_state = 1;
 418
 419                         at76_dbg(DBG_DFU, "DFU: Resetting device");
 420                         schedule_timeout_interruptible(dfu_timeout);
 421                         break;
 422
 423                 case STATE_DFU_DOWNLOAD_IDLE:
 424                         at76_dbg(DBG_DFU, "DOWNLOAD...");
 425                         /* fall through */
 426                 case STATE_DFU_IDLE:
 427                         at76_dbg(DBG_DFU, "DFU IDLE");
 428
 429                         bsize = min_t(int, size, FW_BLOCK_SIZE);
 430                         memcpy(block, buf, bsize);
 431                         at76_dbg(DBG_DFU, "int fw, size left = %5d, "
 432                                  "bsize = %4d, blockno = %2d", size, bsize,
 433                                  blockno);
 434                         ret =
 435                             at76_load_int_fw_block(udev, blockno, block, bsize);
 436                         buf += bsize;
 437                         size -= bsize;
 438                         blockno++;
 439
 440                         if (ret != bsize)
 441                                 dev_printk(KERN_ERR, &udev->dev,
 442                                            "at76_load_int_fw_block "
 443                                            "returned %d\n", ret);
 444                         need_dfu_state = 1;
 445                         break;
 446
 447                 case STATE_DFU_MANIFEST_SYNC:
 448                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
 449
 450                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 451                         if (ret < 0)
 452                                 break;
 453
 454                         dfu_state = dfu_stat_buf.state;
 455                         dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 456                         need_dfu_state = 0;
 457
 458                         /* override the timeout from the status response,
 459                            needed for AT76C505A */
 460                         if (manifest_sync_timeout > 0)
 461                                 dfu_timeout = manifest_sync_timeout;
 462
 463                         at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
 464                         schedule_timeout_interruptible(dfu_timeout);
 465                         break;
 466
 467                 case STATE_DFU_MANIFEST:
 468                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
 469                         is_done = 1;
 470                         break;
 471
 472                 case STATE_DFU_MANIFEST_WAIT_RESET:
 473                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
 474                         is_done = 1;
 475                         break;
 476
 477                 case STATE_DFU_UPLOAD_IDLE:
 478                         at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
 479                         break;
 480
 481                 case STATE_DFU_ERROR:
 482                         at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
 483                         ret = -EPIPE;
 484                         break;
 485
 486                 default:
 487                         at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
 488                         ret = -EINVAL;
 489                         break;
 490                 }
 491         } while (!is_done && (ret >= 0));
 492
 493 exit:
 494         kfree(block);
 495         if (ret >= 0)
 496                 ret = 0;
 497
 498         return ret;
 499 }
 500
 501 #define HEX2STR_BUFFERS 4
 502 #define HEX2STR_MAX_LEN 64
 503
 504 /* Convert binary data into hex string */
 505 static char *hex2str(void *buf, size_t len)
 506 {
 507         static atomic_t a = ATOMIC_INIT(0);
 508         static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
 509         char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
 510         char *obuf = ret;
 511         u8 *ibuf = buf;
 512
 513         if (len > HEX2STR_MAX_LEN)
 514                 len = HEX2STR_MAX_LEN;
 515
 516         if (len == 0)
 517                 goto exit;
 518
 519         while (len--) {
 520                 obuf = hex_byte_pack(obuf, *ibuf++);
 521                 *obuf++ = '-';
 522         }
 523         obuf--;
 524
 525 exit:
 526         *obuf = '\0';
 527
 528         return ret;
 529 }
 530
 531 /* LED trigger */
 532 static int tx_activity;
 533 static void at76_ledtrig_tx_timerfunc(unsigned long data);
 534 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
 535 DEFINE_LED_TRIGGER(ledtrig_tx);
 536
 537 static void at76_ledtrig_tx_timerfunc(unsigned long data)
 538 {
 539         static int tx_lastactivity;
 540
 541         if (tx_lastactivity != tx_activity) {
 542                 tx_lastactivity = tx_activity;
 543                 led_trigger_event(ledtrig_tx, LED_FULL);
 544                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 545         } else
 546                 led_trigger_event(ledtrig_tx, LED_OFF);
 547 }
 548
 549 static void at76_ledtrig_tx_activity(void)
 550 {
 551         tx_activity++;
 552         if (!timer_pending(&ledtrig_tx_timer))
 553                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 554 }
 555
 556 static int at76_remap(struct usb_device *udev)
 557 {
 558         int ret;
 559         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
 560                               USB_TYPE_VENDOR | USB_DIR_OUT |
 561                               USB_RECIP_INTERFACE, 0, 0, NULL, 0,
 562                               USB_CTRL_GET_TIMEOUT);
 563         if (ret < 0)
 564                 return ret;
 565         return 0;
 566 }
 567
 568 static int at76_get_op_mode(struct usb_device *udev)
 569 {
 570         int ret;
 571         u8 saved;
 572         u8 *op_mode;
 573
 574         op_mode = kmalloc(1, GFP_NOIO);
 575         if (!op_mode)
 576                 return -ENOMEM;
 577         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 578                               USB_TYPE_VENDOR | USB_DIR_IN |
 579                               USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
 580                               USB_CTRL_GET_TIMEOUT);
 581         saved = *op_mode;
 582         kfree(op_mode);
 583
 584         if (ret < 0)
 585                 return ret;
 586         else if (ret < 1)
 587                 return -EIO;
 588         else
 589                 return saved;
 590 }
 591
 592 /* Load a block of the second ("external") part of the firmware */
 593 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
 594                                          void *block, int size)
 595 {
 596         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 597                                USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 598                                0x0802, blockno, block, size,
 599                                USB_CTRL_GET_TIMEOUT);
 600 }
 601
 602 static inline int at76_get_hw_cfg(struct usb_device *udev,
 603                                   union at76_hwcfg *buf, int buf_size)
 604 {
 605         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 606                                USB_TYPE_VENDOR | USB_DIR_IN |
 607                                USB_RECIP_INTERFACE, 0x0a02, 0,
 608                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 609 }
 610
 611 /* Intersil boards use a different "value" for GetHWConfig requests */
 612 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
 613                                            union at76_hwcfg *buf, int buf_size)
 614 {
 615         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 616                                USB_TYPE_VENDOR | USB_DIR_IN |
 617                                USB_RECIP_INTERFACE, 0x0902, 0,
 618                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 619 }
 620
 621 /* Get the hardware configuration for the adapter and put it to the appropriate
 622  * fields of 'priv' (the GetHWConfig request and interpretation of the result
 623  * depends on the board type) */
 624 static int at76_get_hw_config(struct at76_priv *priv)
 625 {
 626         int ret;
 627         union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
 628
 629         if (!hwcfg)
 630                 return -ENOMEM;
 631
 632         if (at76_is_intersil(priv->board_type)) {
 633                 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
 634                                                sizeof(hwcfg->i));
 635                 if (ret < 0)
 636                         goto exit;
 637                 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
 638                 priv->regulatory_domain = hwcfg->i.regulatory_domain;
 639         } else if (at76_is_503rfmd(priv->board_type)) {
 640                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
 641                 if (ret < 0)
 642                         goto exit;
 643                 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
 644                 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
 645         } else {
 646                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
 647                 if (ret < 0)
 648                         goto exit;
 649                 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
 650                 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
 651         }
 652
 653 exit:
 654         kfree(hwcfg);
 655         if (ret < 0)
 656                 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",
 657                           ret);
 658
 659         return ret;
 660 }
 661
 662 static struct reg_domain const *at76_get_reg_domain(u16 code)
 663 {
 664         int i;
 665         static struct reg_domain const fd_tab[] = {
 666                 { 0x10, "FCC (USA)", 0x7ff },   /* ch 1-11 */
 667                 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
 668                 { 0x30, "ETSI (most of Europe)", 0x1fff },      /* ch 1-13 */
 669                 { 0x31, "Spain", 0x600 },       /* ch 10-11 */
 670                 { 0x32, "France", 0x1e00 },     /* ch 10-13 */
 671                 { 0x40, "MKK (Japan)", 0x2000 },        /* ch 14 */
 672                 { 0x41, "MKK1 (Japan)", 0x3fff },       /* ch 1-14 */
 673                 { 0x50, "Israel", 0x3fc },      /* ch 3-9 */
 674                 { 0x00, "<unknown>", 0xffffffff }       /* ch 1-32 */
 675         };
 676
 677         /* Last entry is fallback for unknown domain code */
 678         for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
 679                 if (code == fd_tab[i].code)
 680                         break;
 681
 682         return &fd_tab[i];
 683 }
 684
 685 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
 686                                int buf_size)
 687 {
 688         int ret;
 689
 690         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 691                               USB_TYPE_VENDOR | USB_DIR_IN |
 692                               USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
 693                               USB_CTRL_GET_TIMEOUT);
 694         if (ret >= 0 && ret != buf_size)
 695                 return -EIO;
 696         return ret;
 697 }
 698
 699 /* Return positive number for status, negative for an error */
 700 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
 701 {
 702         u8 *stat_buf;
 703         int ret;
 704
 705         stat_buf = kmalloc(40, GFP_NOIO);
 706         if (!stat_buf)
 707                 return -ENOMEM;
 708
 709         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
 710                         USB_TYPE_VENDOR | USB_DIR_IN |
 711                         USB_RECIP_INTERFACE, cmd, 0, stat_buf,
 712                         40, USB_CTRL_GET_TIMEOUT);
 713         if (ret >= 0)
 714                 ret = stat_buf[5];
 715         kfree(stat_buf);
 716
 717         return ret;
 718 }
 719
 720 #define MAKE_CMD_CASE(c) case (c): return #c
 721 static const char *at76_get_cmd_string(u8 cmd_status)
 722 {
 723         switch (cmd_status) {
 724                 MAKE_CMD_CASE(CMD_SET_MIB);
 725                 MAKE_CMD_CASE(CMD_GET_MIB);
 726                 MAKE_CMD_CASE(CMD_SCAN);
 727                 MAKE_CMD_CASE(CMD_JOIN);
 728                 MAKE_CMD_CASE(CMD_START_IBSS);
 729                 MAKE_CMD_CASE(CMD_RADIO_ON);
 730                 MAKE_CMD_CASE(CMD_RADIO_OFF);
 731                 MAKE_CMD_CASE(CMD_STARTUP);
 732         }
 733
 734         return "UNKNOWN";
 735 }
 736
 737 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
 738                                  int buf_size)
 739 {
 740         int ret;
 741         struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
 742                                                buf_size, GFP_KERNEL);
 743
 744         if (!cmd_buf)
 745                 return -ENOMEM;
 746
 747         cmd_buf->cmd = cmd;
 748         cmd_buf->reserved = 0;
 749         cmd_buf->size = cpu_to_le16(buf_size);
 750         memcpy(cmd_buf->data, buf, buf_size);
 751
 752         at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
 753                       "issuing command %s (0x%02x)",
 754                       at76_get_cmd_string(cmd), cmd);
 755
 756         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 757                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 758                               0, 0, cmd_buf,
 759                               sizeof(struct at76_command) + buf_size,
 760                               USB_CTRL_GET_TIMEOUT);
 761         kfree(cmd_buf);
 762         return ret;
 763 }
 764
 765 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
 766 static const char *at76_get_cmd_status_string(u8 cmd_status)
 767 {
 768         switch (cmd_status) {
 769                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
 770                 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
 771                 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
 772                 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
 773                 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
 774                 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
 775                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
 776                 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
 777                 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
 778         }
 779
 780         return "UNKNOWN";
 781 }
 782
 783 /* Wait until the command is completed */
 784 static int at76_wait_completion(struct at76_priv *priv, int cmd)
 785 {
 786         int status = 0;
 787         unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
 788
 789         do {
 790                 status = at76_get_cmd_status(priv->udev, cmd);
 791                 if (status < 0) {
 792                         wiphy_err(priv->hw->wiphy,
 793                                   "at76_get_cmd_status failed: %d\n",
 794                                   status);
 795                         break;
 796                 }
 797
 798                 at76_dbg(DBG_WAIT_COMPLETE,
 799                          "%s: Waiting on cmd %d, status = %d (%s)",
 800                          wiphy_name(priv->hw->wiphy), cmd, status,
 801                          at76_get_cmd_status_string(status));
 802
 803                 if (status != CMD_STATUS_IN_PROGRESS
 804                     && status != CMD_STATUS_IDLE)
 805                         break;
 806
 807                 schedule_timeout_interruptible(HZ / 10);        /* 100 ms */
 808                 if (time_after(jiffies, timeout)) {
 809                         wiphy_err(priv->hw->wiphy,
 810                                   "completion timeout for command %d\n", cmd);
 811                         status = -ETIMEDOUT;
 812                         break;
 813                 }
 814         } while (1);
 815
 816         return status;
 817 }
 818
 819 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
 820 {
 821         int ret;
 822
 823         ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
 824                                     offsetof(struct set_mib_buffer,
 825                                              data) + buf->size);
 826         if (ret < 0)
 827                 return ret;
 828
 829         ret = at76_wait_completion(priv, CMD_SET_MIB);
 830         if (ret != CMD_STATUS_COMPLETE) {
 831                 wiphy_info(priv->hw->wiphy,
 832                            "set_mib: at76_wait_completion failed with %d\n",
 833                            ret);
 834                 ret = -EIO;
 835         }
 836
 837         return ret;
 838 }
 839
 840 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
 841 static int at76_set_radio(struct at76_priv *priv, int enable)
 842 {
 843         int ret;
 844         int cmd;
 845
 846         if (priv->radio_on == enable)
 847                 return 0;
 848
 849         cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
 850
 851         ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
 852         if (ret < 0)
 853                 wiphy_err(priv->hw->wiphy,
 854                           "at76_set_card_command(%d) failed: %d\n", cmd, ret);
 855         else
 856                 ret = 1;
 857
 858         priv->radio_on = enable;
 859         return ret;
 860 }
 861
 862 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
 863 static int at76_set_pm_mode(struct at76_priv *priv)
 864 {
 865         int ret = 0;
 866
 867         priv->mib_buf.type = MIB_MAC_MGMT;
 868         priv->mib_buf.size = 1;
 869         priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
 870         priv->mib_buf.data.byte = priv->pm_mode;
 871
 872         ret = at76_set_mib(priv, &priv->mib_buf);
 873         if (ret < 0)
 874                 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
 875                           ret);
 876
 877         return ret;
 878 }
 879
 880 static int at76_set_preamble(struct at76_priv *priv, u8 type)
 881 {
 882         int ret = 0;
 883
 884         priv->mib_buf.type = MIB_LOCAL;
 885         priv->mib_buf.size = 1;
 886         priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
 887         priv->mib_buf.data.byte = type;
 888
 889         ret = at76_set_mib(priv, &priv->mib_buf);
 890         if (ret < 0)
 891                 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
 892                           ret);
 893
 894         return ret;
 895 }
 896
 897 static int at76_set_frag(struct at76_priv *priv, u16 size)
 898 {
 899         int ret = 0;
 900
 901         priv->mib_buf.type = MIB_MAC;
 902         priv->mib_buf.size = 2;
 903         priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
 904         priv->mib_buf.data.word = cpu_to_le16(size);
 905
 906         ret = at76_set_mib(priv, &priv->mib_buf);
 907         if (ret < 0)
 908                 wiphy_err(priv->hw->wiphy,
 909                           "set_mib (frag threshold) failed: %d\n", ret);
 910
 911         return ret;
 912 }
 913
 914 static int at76_set_rts(struct at76_priv *priv, u16 size)
 915 {
 916         int ret = 0;
 917
 918         priv->mib_buf.type = MIB_MAC;
 919         priv->mib_buf.size = 2;
 920         priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
 921         priv->mib_buf.data.word = cpu_to_le16(size);
 922
 923         ret = at76_set_mib(priv, &priv->mib_buf);
 924         if (ret < 0)
 925                 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
 926
 927         return ret;
 928 }
 929
 930 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
 931 {
 932         int ret = 0;
 933
 934         priv->mib_buf.type = MIB_LOCAL;
 935         priv->mib_buf.size = 1;
 936         priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
 937         priv->mib_buf.data.byte = onoff;
 938
 939         ret = at76_set_mib(priv, &priv->mib_buf);
 940         if (ret < 0)
 941                 wiphy_err(priv->hw->wiphy,
 942                           "set_mib (autorate fallback) failed: %d\n", ret);
 943
 944         return ret;
 945 }
 946
 947 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
 948 {
 949         int i;
 950         int ret;
 951         struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
 952                                          GFP_KERNEL);
 953
 954         if (!m)
 955                 return;
 956
 957         ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
 958                            sizeof(struct mib_mac_addr));
 959         if (ret < 0) {
 960                 wiphy_err(priv->hw->wiphy,
 961                           "at76_get_mib (MAC_ADDR) failed: %d\n", ret);
 962                 goto exit;
 963         }
 964
 965         at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
 966                  wiphy_name(priv->hw->wiphy),
 967                  m->mac_addr, m->res[0], m->res[1]);
 968         for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
 969                 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
 970                          "status %d", wiphy_name(priv->hw->wiphy), i,
 971                          m->group_addr[i], m->group_addr_status[i]);
 972 exit:
 973         kfree(m);
 974 }
 975
 976 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
 977 {
 978         int i;
 979         int ret;
 980         int key_len;
 981         struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
 982
 983         if (!m)
 984                 return;
 985
 986         ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
 987                            sizeof(struct mib_mac_wep));
 988         if (ret < 0) {
 989                 wiphy_err(priv->hw->wiphy,
 990                           "at76_get_mib (MAC_WEP) failed: %d\n", ret);
 991                 goto exit;
 992         }
 993
 994         at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
 995                  "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
 996                  "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
 997                  m->privacy_invoked, m->wep_default_key_id,
 998                  m->wep_key_mapping_len, m->exclude_unencrypted,
 999                  le32_to_cpu(m->wep_icv_error_count),
1000                  le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1001                  m->wep_default_key_id);
1002
1003         key_len = (m->encryption_level == 1) ?
1004             WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1005
1006         for (i = 0; i < WEP_KEYS; i++)
1007                 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1008                          wiphy_name(priv->hw->wiphy), i,
1009                          hex2str(m->wep_default_keyvalue[i], key_len));
1010 exit:
1011         kfree(m);
1012 }
1013
1014 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1015 {
1016         int ret;
1017         struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1018                                          GFP_KERNEL);
1019
1020         if (!m)
1021                 return;
1022
1023         ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1024                            sizeof(struct mib_mac_mgmt));
1025         if (ret < 0) {
1026                 wiphy_err(priv->hw->wiphy,
1027                           "at76_get_mib (MAC_MGMT) failed: %d\n", ret);
1028                 goto exit;
1029         }
1030
1031         at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1032                  "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1033                  "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1034                  "current_bssid %pM current_essid %s current_bss_type %d "
1035                  "pm_mode %d ibss_change %d res %d "
1036                  "multi_domain_capability_implemented %d "
1037                  "international_roaming %d country_string %.3s",
1038                  wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1039                  le16_to_cpu(m->CFP_max_duration),
1040                  le16_to_cpu(m->medium_occupancy_limit),
1041                  le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1042                  m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1043                  m->CFP_period, m->current_bssid,
1044                  hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1045                  m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1046                  m->res, m->multi_domain_capability_implemented,
1047                  m->multi_domain_capability_enabled, m->country_string);
1048 exit:
1049         kfree(m);
1050 }
1051
1052 static void at76_dump_mib_mac(struct at76_priv *priv)
1053 {
1054         int ret;
1055         struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1056
1057         if (!m)
1058                 return;
1059
1060         ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1061         if (ret < 0) {
1062                 wiphy_err(priv->hw->wiphy,
1063                           "at76_get_mib (MAC) failed: %d\n", ret);
1064                 goto exit;
1065         }
1066
1067         at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1068                  "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1069                  "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1070                  "scan_type %d scan_channel %d probe_delay %u "
1071                  "min_channel_time %d max_channel_time %d listen_int %d "
1072                  "desired_ssid %s desired_bssid %pM desired_bsstype %d",
1073                  wiphy_name(priv->hw->wiphy),
1074                  le32_to_cpu(m->max_tx_msdu_lifetime),
1075                  le32_to_cpu(m->max_rx_lifetime),
1076                  le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1077                  le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1078                  m->short_retry_time, m->long_retry_time, m->scan_type,
1079                  m->scan_channel, le16_to_cpu(m->probe_delay),
1080                  le16_to_cpu(m->min_channel_time),
1081                  le16_to_cpu(m->max_channel_time),
1082                  le16_to_cpu(m->listen_interval),
1083                  hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1084                  m->desired_bssid, m->desired_bsstype);
1085 exit:
1086         kfree(m);
1087 }
1088
1089 static void at76_dump_mib_phy(struct at76_priv *priv)
1090 {
1091         int ret;
1092         struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1093
1094         if (!m)
1095                 return;
1096
1097         ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1098         if (ret < 0) {
1099                 wiphy_err(priv->hw->wiphy,
1100                           "at76_get_mib (PHY) failed: %d\n", ret);
1101                 goto exit;
1102         }
1103
1104         at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1105                  "sifs_time %d preamble_length %d plcp_header_length %d "
1106                  "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1107                  "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1108                  "phy_type %d current_reg_domain %d",
1109                  wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1110                  le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1111                  le16_to_cpu(m->preamble_length),
1112                  le16_to_cpu(m->plcp_header_length),
1113                  le16_to_cpu(m->mpdu_max_length),
1114                  le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1115                  m->operation_rate_set[1], m->operation_rate_set[2],
1116                  m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1117                  m->phy_type, m->current_reg_domain);
1118 exit:
1119         kfree(m);
1120 }
1121
1122 static void at76_dump_mib_local(struct at76_priv *priv)
1123 {
1124         int ret;
1125         struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1126
1127         if (!m)
1128                 return;
1129
1130         ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1131         if (ret < 0) {
1132                 wiphy_err(priv->hw->wiphy,
1133                           "at76_get_mib (LOCAL) failed: %d\n", ret);
1134                 goto exit;
1135         }
1136
1137         at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1138                  "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1139                  "preamble_type %d", wiphy_name(priv->hw->wiphy),
1140                  m->beacon_enable,
1141                  m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1142                  m->preamble_type);
1143 exit:
1144         kfree(m);
1145 }
1146
1147 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1148 {
1149         int ret;
1150         struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1151
1152         if (!m)
1153                 return;
1154
1155         ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1156                            sizeof(struct mib_mdomain));
1157         if (ret < 0) {
1158                 wiphy_err(priv->hw->wiphy,
1159                           "at76_get_mib (MDOMAIN) failed: %d\n", ret);
1160                 goto exit;
1161         }
1162
1163         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1164                  wiphy_name(priv->hw->wiphy),
1165                  hex2str(m->channel_list, sizeof(m->channel_list)));
1166
1167         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1168                  wiphy_name(priv->hw->wiphy),
1169                  hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1170 exit:
1171         kfree(m);
1172 }
1173
1174 /* Enable monitor mode */
1175 static int at76_start_monitor(struct at76_priv *priv)
1176 {
1177         struct at76_req_scan scan;
1178         int ret;
1179
1180         memset(&scan, 0, sizeof(struct at76_req_scan));
1181         memset(scan.bssid, 0xff, ETH_ALEN);
1182
1183         scan.channel = priv->channel;
1184         scan.scan_type = SCAN_TYPE_PASSIVE;
1185         scan.international_scan = 0;
1186         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1187         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1188         scan.probe_delay = cpu_to_le16(0);
1189
1190         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1191         if (ret >= 0)
1192                 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1193
1194         return ret;
1195 }
1196
1197 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1198    likely to compensate a flaw in the AT76C503A USB part ... */
1199 static inline int at76_calc_padding(int wlen)
1200 {
1201         /* add the USB TX header */
1202         wlen += AT76_TX_HDRLEN;
1203
1204         wlen = wlen % 64;
1205
1206         if (wlen < 50)
1207                 return 50 - wlen;
1208
1209         if (wlen >= 61)
1210                 return 64 + 50 - wlen;
1211
1212         return 0;
1213 }
1214
1215 static void at76_rx_callback(struct urb *urb)
1216 {
1217         struct at76_priv *priv = urb->context;
1218
1219         priv->rx_tasklet.data = (unsigned long)urb;
1220         tasklet_schedule(&priv->rx_tasklet);
1221 }
1222
1223 static int at76_submit_rx_urb(struct at76_priv *priv)
1224 {
1225         int ret;
1226         int size;
1227         struct sk_buff *skb = priv->rx_skb;
1228
1229         if (!priv->rx_urb) {
1230                 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n",
1231                           __func__);
1232                 return -EFAULT;
1233         }
1234
1235         if (!skb) {
1236                 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1237                 if (!skb) {
1238                         wiphy_err(priv->hw->wiphy,
1239                                   "cannot allocate rx skbuff\n");
1240                         ret = -ENOMEM;
1241                         goto exit;
1242                 }
1243                 priv->rx_skb = skb;
1244         } else {
1245                 skb_push(skb, skb_headroom(skb));
1246                 skb_trim(skb, 0);
1247         }
1248
1249         size = skb_tailroom(skb);
1250         usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1251                           skb_put(skb, size), size, at76_rx_callback, priv);
1252         ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1253         if (ret < 0) {
1254                 if (ret == -ENODEV)
1255                         at76_dbg(DBG_DEVSTART,
1256                                  "usb_submit_urb returned -ENODEV");
1257                 else
1258                         wiphy_err(priv->hw->wiphy,
1259                                   "rx, usb_submit_urb failed: %d\n", ret);
1260         }
1261
1262 exit:
1263         if (ret < 0 && ret != -ENODEV)
1264                 wiphy_err(priv->hw->wiphy,
1265                           "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1266
1267         return ret;
1268 }
1269
1270 /* Download external firmware */
1271 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1272 {
1273         int ret;
1274         int op_mode;
1275         int blockno = 0;
1276         int bsize;
1277         u8 *block;
1278         u8 *buf = fwe->extfw;
1279         int size = fwe->extfw_size;
1280
1281         if (!buf || !size)
1282                 return -ENOENT;
1283
1284         op_mode = at76_get_op_mode(udev);
1285         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1286
1287         if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1288                 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1289                            op_mode);
1290                 return -EINVAL;
1291         }
1292
1293         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1294         if (!block)
1295                 return -ENOMEM;
1296
1297         at76_dbg(DBG_DEVSTART, "downloading external firmware");
1298
1299         /* for fw >= 0.100, the device needs an extra empty block */
1300         do {
1301                 bsize = min_t(int, size, FW_BLOCK_SIZE);
1302                 memcpy(block, buf, bsize);
1303                 at76_dbg(DBG_DEVSTART,
1304                          "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1305                          size, bsize, blockno);
1306                 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1307                 if (ret != bsize) {
1308                         dev_printk(KERN_ERR, &udev->dev,
1309                                    "loading %dth firmware block failed: %d\n",
1310                                    blockno, ret);
1311                         goto exit;
1312                 }
1313                 buf += bsize;
1314                 size -= bsize;
1315                 blockno++;
1316         } while (bsize > 0);
1317
1318         if (at76_is_505a(fwe->board_type)) {
1319                 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1320                 schedule_timeout_interruptible(HZ / 5 + 1);
1321         }
1322
1323 exit:
1324         kfree(block);
1325         if (ret < 0)
1326                 dev_printk(KERN_ERR, &udev->dev,
1327                            "downloading external firmware failed: %d\n", ret);
1328         return ret;
1329 }
1330
1331 /* Download internal firmware */
1332 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1333 {
1334         int ret;
1335         int need_remap = !at76_is_505a(fwe->board_type);
1336
1337         ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1338                                    need_remap ? 0 : 2 * HZ);
1339
1340         if (ret < 0) {
1341                 dev_printk(KERN_ERR, &udev->dev,
1342                            "downloading internal fw failed with %d\n", ret);
1343                 goto exit;
1344         }
1345
1346         at76_dbg(DBG_DEVSTART, "sending REMAP");
1347
1348         /* no REMAP for 505A (see SF driver) */
1349         if (need_remap) {
1350                 ret = at76_remap(udev);
1351                 if (ret < 0) {
1352                         dev_printk(KERN_ERR, &udev->dev,
1353                                    "sending REMAP failed with %d\n", ret);
1354                         goto exit;
1355                 }
1356         }
1357
1358         at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1359         schedule_timeout_interruptible(2 * HZ + 1);
1360         usb_reset_device(udev);
1361
1362 exit:
1363         return ret;
1364 }
1365
1366 static int at76_startup_device(struct at76_priv *priv)
1367 {
1368         struct at76_card_config *ccfg = &priv->card_config;
1369         int ret;
1370
1371         at76_dbg(DBG_PARAMS,
1372                  "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1373                  "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1374                  priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1375                  priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1376                  priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1377                  priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1378         at76_dbg(DBG_PARAMS,
1379                  "%s param: preamble %s rts %d retry %d frag %d "
1380                  "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1381                  preambles[priv->preamble_type], priv->rts_threshold,
1382                  priv->short_retry_limit, priv->frag_threshold,
1383                  priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1384                  TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1385                  TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1386                  TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1387                  TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1388         at76_dbg(DBG_PARAMS,
1389                  "%s param: pm_mode %d pm_period %d auth_mode %s "
1390                  "scan_times %d %d scan_mode %s",
1391                  wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1392                  priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1393                  priv->scan_min_time, priv->scan_max_time,
1394                  priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1395
1396         memset(ccfg, 0, sizeof(struct at76_card_config));
1397         ccfg->promiscuous_mode = 0;
1398         ccfg->short_retry_limit = priv->short_retry_limit;
1399
1400         if (priv->wep_enabled) {
1401                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1402                         ccfg->encryption_type = 2;
1403                 else
1404                         ccfg->encryption_type = 1;
1405
1406                 /* jal: always exclude unencrypted if WEP is active */
1407                 ccfg->exclude_unencrypted = 1;
1408         } else {
1409                 ccfg->exclude_unencrypted = 0;
1410                 ccfg->encryption_type = 0;
1411         }
1412
1413         ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1414         ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1415
1416         memcpy(ccfg->basic_rate_set, hw_rates, 4);
1417         /* jal: really needed, we do a set_mib for autorate later ??? */
1418         ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1419         ccfg->channel = priv->channel;
1420         ccfg->privacy_invoked = priv->wep_enabled;
1421         memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1422         ccfg->ssid_len = priv->essid_size;
1423
1424         ccfg->wep_default_key_id = priv->wep_key_id;
1425         memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1426                sizeof(priv->wep_keys));
1427
1428         ccfg->short_preamble = priv->preamble_type;
1429         ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1430
1431         ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1432                                     sizeof(struct at76_card_config));
1433         if (ret < 0) {
1434                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1435                           ret);
1436                 return ret;
1437         }
1438
1439         at76_wait_completion(priv, CMD_STARTUP);
1440
1441         /* remove BSSID from previous run */
1442         memset(priv->bssid, 0, ETH_ALEN);
1443
1444         if (at76_set_radio(priv, 1) == 1)
1445                 at76_wait_completion(priv, CMD_RADIO_ON);
1446
1447         ret = at76_set_preamble(priv, priv->preamble_type);
1448         if (ret < 0)
1449                 return ret;
1450
1451         ret = at76_set_frag(priv, priv->frag_threshold);
1452         if (ret < 0)
1453                 return ret;
1454
1455         ret = at76_set_rts(priv, priv->rts_threshold);
1456         if (ret < 0)
1457                 return ret;
1458
1459         ret = at76_set_autorate_fallback(priv,
1460                                          priv->txrate == TX_RATE_AUTO ? 1 : 0);
1461         if (ret < 0)
1462                 return ret;
1463
1464         ret = at76_set_pm_mode(priv);
1465         if (ret < 0)
1466                 return ret;
1467
1468         if (at76_debug & DBG_MIB) {
1469                 at76_dump_mib_mac(priv);
1470                 at76_dump_mib_mac_addr(priv);
1471                 at76_dump_mib_mac_mgmt(priv);
1472                 at76_dump_mib_mac_wep(priv);
1473                 at76_dump_mib_mdomain(priv);
1474                 at76_dump_mib_phy(priv);
1475                 at76_dump_mib_local(priv);
1476         }
1477
1478         return 0;
1479 }
1480
1481 /* Enable or disable promiscuous mode */
1482 static void at76_work_set_promisc(struct work_struct *work)
1483 {
1484         struct at76_priv *priv = container_of(work, struct at76_priv,
1485                                               work_set_promisc);
1486         int ret = 0;
1487
1488         if (priv->device_unplugged)
1489                 return;
1490
1491         mutex_lock(&priv->mtx);
1492
1493         priv->mib_buf.type = MIB_LOCAL;
1494         priv->mib_buf.size = 1;
1495         priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1496         priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1497
1498         ret = at76_set_mib(priv, &priv->mib_buf);
1499         if (ret < 0)
1500                 wiphy_err(priv->hw->wiphy,
1501                           "set_mib (promiscuous_mode) failed: %d\n", ret);
1502
1503         mutex_unlock(&priv->mtx);
1504 }
1505
1506 /* Submit Rx urb back to the device */
1507 static void at76_work_submit_rx(struct work_struct *work)
1508 {
1509         struct at76_priv *priv = container_of(work, struct at76_priv,
1510                                               work_submit_rx);
1511
1512         mutex_lock(&priv->mtx);
1513         at76_submit_rx_urb(priv);
1514         mutex_unlock(&priv->mtx);
1515 }
1516
1517 static void at76_rx_tasklet(unsigned long param)
1518 {
1519         struct urb *urb = (struct urb *)param;
1520         struct at76_priv *priv = urb->context;
1521         struct at76_rx_buffer *buf;
1522         struct ieee80211_rx_status rx_status = { 0 };
1523
1524         if (priv->device_unplugged) {
1525                 at76_dbg(DBG_DEVSTART, "device unplugged");
1526                 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1527                 return;
1528         }
1529
1530         if (!priv->rx_skb || !priv->rx_skb->data)
1531                 return;
1532
1533         buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1534
1535         if (urb->status != 0) {
1536                 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1537                         at76_dbg(DBG_URB,
1538                                  "%s %s: - nonzero Rx bulk status received: %d",
1539                                  __func__, wiphy_name(priv->hw->wiphy),
1540                                  urb->status);
1541                 return;
1542         }
1543
1544         at76_dbg(DBG_RX_ATMEL_HDR,
1545                  "%s: rx frame: rate %d rssi %d noise %d link %d",
1546                  wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1547                  buf->noise_level, buf->link_quality);
1548
1549         skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1550         skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1551         at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1552                       priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1553
1554         rx_status.signal = buf->rssi;
1555         rx_status.flag |= RX_FLAG_DECRYPTED;
1556         rx_status.flag |= RX_FLAG_IV_STRIPPED;
1557
1558         at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1559                  priv->rx_skb->len, priv->rx_skb->data_len);
1560         memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1561         ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1562
1563         /* Use a new skb for the next receive */
1564         priv->rx_skb = NULL;
1565
1566         at76_submit_rx_urb(priv);
1567 }
1568
1569 /* Load firmware into kernel memory and parse it */
1570 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1571                                           enum board_type board_type)
1572 {
1573         int ret;
1574         char *str;
1575         struct at76_fw_header *fwh;
1576         struct fwentry *fwe = &firmwares[board_type];
1577
1578         mutex_lock(&fw_mutex);
1579
1580         if (fwe->loaded) {
1581                 at76_dbg(DBG_FW, "re-using previously loaded fw");
1582                 goto exit;
1583         }
1584
1585         at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1586         ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1587         if (ret < 0) {
1588                 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1589                            fwe->fwname);
1590                 dev_printk(KERN_ERR, &udev->dev,
1591                            "you may need to download the firmware from "
1592                            "http://developer.berlios.de/projects/at76c503a/\n");
1593                 goto exit;
1594         }
1595
1596         at76_dbg(DBG_FW, "got it.");
1597         fwh = (struct at76_fw_header *)(fwe->fw->data);
1598
1599         if (fwe->fw->size <= sizeof(*fwh)) {
1600                 dev_printk(KERN_ERR, &udev->dev,
1601                            "firmware is too short (0x%zx)\n", fwe->fw->size);
1602                 goto exit;
1603         }
1604
1605         /* CRC currently not checked */
1606         fwe->board_type = le32_to_cpu(fwh->board_type);
1607         if (fwe->board_type != board_type) {
1608                 dev_printk(KERN_ERR, &udev->dev,
1609                            "board type mismatch, requested %u, got %u\n",
1610                            board_type, fwe->board_type);
1611                 goto exit;
1612         }
1613
1614         fwe->fw_version.major = fwh->major;
1615         fwe->fw_version.minor = fwh->minor;
1616         fwe->fw_version.patch = fwh->patch;
1617         fwe->fw_version.build = fwh->build;
1618
1619         str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1620         fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1621         fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1622         fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1623         fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1624
1625         fwe->loaded = 1;
1626
1627         dev_printk(KERN_DEBUG, &udev->dev,
1628                    "using firmware %s (version %d.%d.%d-%d)\n",
1629                    fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1630
1631         at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1632                  le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1633                  le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1634         at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1635
1636 exit:
1637         mutex_unlock(&fw_mutex);
1638
1639         if (fwe->loaded)
1640                 return fwe;
1641         else
1642                 return NULL;
1643 }
1644
1645 static int at76_join(struct at76_priv *priv)
1646 {
1647         struct at76_req_join join;
1648         int ret;
1649
1650         memset(&join, 0, sizeof(struct at76_req_join));
1651         memcpy(join.essid, priv->essid, priv->essid_size);
1652         join.essid_size = priv->essid_size;
1653         memcpy(join.bssid, priv->bssid, ETH_ALEN);
1654         join.bss_type = INFRASTRUCTURE_MODE;
1655         join.channel = priv->channel;
1656         join.timeout = cpu_to_le16(2000);
1657
1658         at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1659         ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1660                                     sizeof(struct at76_req_join));
1661
1662         if (ret < 0) {
1663                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1664                           ret);
1665                 return 0;
1666         }
1667
1668         ret = at76_wait_completion(priv, CMD_JOIN);
1669         at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1670         if (ret != CMD_STATUS_COMPLETE) {
1671                 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1672                           ret);
1673                 return 0;
1674         }
1675
1676         at76_set_pm_mode(priv);
1677
1678         return 0;
1679 }
1680
1681 static void at76_work_join_bssid(struct work_struct *work)
1682 {
1683         struct at76_priv *priv = container_of(work, struct at76_priv,
1684                                               work_join_bssid);
1685
1686         if (priv->device_unplugged)
1687                 return;
1688
1689         mutex_lock(&priv->mtx);
1690
1691         if (is_valid_ether_addr(priv->bssid))
1692                 at76_join(priv);
1693
1694         mutex_unlock(&priv->mtx);
1695 }
1696
1697 static void at76_mac80211_tx_callback(struct urb *urb)
1698 {
1699         struct at76_priv *priv = urb->context;
1700         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1701
1702         at76_dbg(DBG_MAC80211, "%s()", __func__);
1703
1704         switch (urb->status) {
1705         case 0:
1706                 /* success */
1707                 info->flags |= IEEE80211_TX_STAT_ACK;
1708                 break;
1709         case -ENOENT:
1710         case -ECONNRESET:
1711                 /* fail, urb has been unlinked */
1712                 /* FIXME: add error message */
1713                 break;
1714         default:
1715                 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1716                          __func__, urb->status);
1717                 break;
1718         }
1719
1720         memset(&info->status, 0, sizeof(info->status));
1721
1722         ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1723
1724         priv->tx_skb = NULL;
1725
1726         ieee80211_wake_queues(priv->hw);
1727 }
1728
1729 static void at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1730 {
1731         struct at76_priv *priv = hw->priv;
1732         struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1733         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1734         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1735         int padding, submit_len, ret;
1736
1737         at76_dbg(DBG_MAC80211, "%s()", __func__);
1738
1739         if (priv->tx_urb->status == -EINPROGRESS) {
1740                 wiphy_err(priv->hw->wiphy,
1741                           "%s called while tx urb is pending\n", __func__);
1742                 dev_kfree_skb_any(skb);
1743                 return;
1744         }
1745
1746         /* The following code lines are important when the device is going to
1747          * authenticate with a new bssid. The driver must send CMD_JOIN before
1748          * an authentication frame is transmitted. For this to succeed, the
1749          * correct bssid of the AP must be known. As mac80211 does not inform
1750          * drivers about the bssid prior to the authentication process the
1751          * following workaround is necessary. If the TX frame is an
1752          * authentication frame extract the bssid and send the CMD_JOIN. */
1753         if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1754                 if (compare_ether_addr(priv->bssid, mgmt->bssid)) {
1755                         memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1756                         ieee80211_queue_work(hw, &priv->work_join_bssid);
1757                         dev_kfree_skb_any(skb);
1758                         return;
1759                 }
1760         }
1761
1762         ieee80211_stop_queues(hw);
1763
1764         at76_ledtrig_tx_activity();     /* tell ledtrigger we send a packet */
1765
1766         WARN_ON(priv->tx_skb != NULL);
1767
1768         priv->tx_skb = skb;
1769         padding = at76_calc_padding(skb->len);
1770         submit_len = AT76_TX_HDRLEN + skb->len + padding;
1771
1772         /* setup 'Atmel' header */
1773         memset(tx_buffer, 0, sizeof(*tx_buffer));
1774         tx_buffer->padding = padding;
1775         tx_buffer->wlength = cpu_to_le16(skb->len);
1776         tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1777         memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1778         memcpy(tx_buffer->packet, skb->data, skb->len);
1779
1780         at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1781                  wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1782                  tx_buffer->padding, tx_buffer->tx_rate);
1783
1784         /* send stuff */
1785         at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1786                       "%s(): tx_buffer %d bytes:", __func__, submit_len);
1787         usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1788                           submit_len, at76_mac80211_tx_callback, priv);
1789         ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1790         if (ret) {
1791                 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1792                 if (ret == -EINVAL)
1793                         wiphy_err(priv->hw->wiphy,
1794                                   "-EINVAL: tx urb %p hcpriv %p complete %p\n",
1795                                   priv->tx_urb,
1796                                   priv->tx_urb->hcpriv, priv->tx_urb->complete);
1797         }
1798 }
1799
1800 static int at76_mac80211_start(struct ieee80211_hw *hw)
1801 {
1802         struct at76_priv *priv = hw->priv;
1803         int ret;
1804
1805         at76_dbg(DBG_MAC80211, "%s()", __func__);
1806
1807         mutex_lock(&priv->mtx);
1808
1809         ret = at76_submit_rx_urb(priv);
1810         if (ret < 0) {
1811                 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1812                           ret);
1813                 goto error;
1814         }
1815
1816         at76_startup_device(priv);
1817
1818         at76_start_monitor(priv);
1819
1820 error:
1821         mutex_unlock(&priv->mtx);
1822
1823         return 0;
1824 }
1825
1826 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1827 {
1828         struct at76_priv *priv = hw->priv;
1829
1830         at76_dbg(DBG_MAC80211, "%s()", __func__);
1831
1832         cancel_delayed_work(&priv->dwork_hw_scan);
1833         cancel_work_sync(&priv->work_join_bssid);
1834         cancel_work_sync(&priv->work_set_promisc);
1835
1836         mutex_lock(&priv->mtx);
1837
1838         if (!priv->device_unplugged) {
1839                 /* We are called by "ifconfig ethX down", not because the
1840                  * device is not available anymore. */
1841                 at76_set_radio(priv, 0);
1842
1843                 /* We unlink rx_urb because at76_open() re-submits it.
1844                  * If unplugged, at76_delete_device() takes care of it. */
1845                 usb_kill_urb(priv->rx_urb);
1846         }
1847
1848         mutex_unlock(&priv->mtx);
1849 }
1850
1851 static int at76_add_interface(struct ieee80211_hw *hw,
1852                               struct ieee80211_vif *vif)
1853 {
1854         struct at76_priv *priv = hw->priv;
1855         int ret = 0;
1856
1857         at76_dbg(DBG_MAC80211, "%s()", __func__);
1858
1859         mutex_lock(&priv->mtx);
1860
1861         switch (vif->type) {
1862         case NL80211_IFTYPE_STATION:
1863                 priv->iw_mode = IW_MODE_INFRA;
1864                 break;
1865         default:
1866                 ret = -EOPNOTSUPP;
1867                 goto exit;
1868         }
1869
1870 exit:
1871         mutex_unlock(&priv->mtx);
1872
1873         return ret;
1874 }
1875
1876 static void at76_remove_interface(struct ieee80211_hw *hw,
1877                                   struct ieee80211_vif *vif)
1878 {
1879         at76_dbg(DBG_MAC80211, "%s()", __func__);
1880 }
1881
1882 static void at76_dwork_hw_scan(struct work_struct *work)
1883 {
1884         struct at76_priv *priv = container_of(work, struct at76_priv,
1885                                               dwork_hw_scan.work);
1886         int ret;
1887
1888         if (priv->device_unplugged)
1889                 return;
1890
1891         mutex_lock(&priv->mtx);
1892
1893         ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1894         at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1895
1896         /* FIXME: add maximum time for scan to complete */
1897
1898         if (ret != CMD_STATUS_COMPLETE) {
1899                 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1900                                              SCAN_POLL_INTERVAL);
1901                 mutex_unlock(&priv->mtx);
1902                 return;
1903         }
1904
1905         if (is_valid_ether_addr(priv->bssid))
1906                 at76_join(priv);
1907
1908         mutex_unlock(&priv->mtx);
1909
1910         ieee80211_scan_completed(priv->hw, false);
1911
1912         ieee80211_wake_queues(priv->hw);
1913 }
1914
1915 static int at76_hw_scan(struct ieee80211_hw *hw,
1916                         struct ieee80211_vif *vif,
1917                         struct cfg80211_scan_request *req)
1918 {
1919         struct at76_priv *priv = hw->priv;
1920         struct at76_req_scan scan;
1921         u8 *ssid = NULL;
1922         int ret, len = 0;
1923
1924         at76_dbg(DBG_MAC80211, "%s():", __func__);
1925
1926         if (priv->device_unplugged)
1927                 return 0;
1928
1929         mutex_lock(&priv->mtx);
1930
1931         ieee80211_stop_queues(hw);
1932
1933         memset(&scan, 0, sizeof(struct at76_req_scan));
1934         memset(scan.bssid, 0xFF, ETH_ALEN);
1935
1936         if (req->n_ssids) {
1937                 scan.scan_type = SCAN_TYPE_ACTIVE;
1938                 ssid = req->ssids[0].ssid;
1939                 len = req->ssids[0].ssid_len;
1940         } else {
1941                 scan.scan_type = SCAN_TYPE_PASSIVE;
1942         }
1943
1944         if (len) {
1945                 memcpy(scan.essid, ssid, len);
1946                 scan.essid_size = len;
1947         }
1948
1949         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1950         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1951         scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1952         scan.international_scan = 0;
1953
1954         at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1955         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1956
1957         if (ret < 0) {
1958                 err("CMD_SCAN failed: %d", ret);
1959                 goto exit;
1960         }
1961
1962         ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1963                                      SCAN_POLL_INTERVAL);
1964
1965 exit:
1966         mutex_unlock(&priv->mtx);
1967
1968         return 0;
1969 }
1970
1971 static int at76_config(struct ieee80211_hw *hw, u32 changed)
1972 {
1973         struct at76_priv *priv = hw->priv;
1974
1975         at76_dbg(DBG_MAC80211, "%s(): channel %d",
1976                  __func__, hw->conf.channel->hw_value);
1977         at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1978
1979         mutex_lock(&priv->mtx);
1980
1981         priv->channel = hw->conf.channel->hw_value;
1982
1983         if (is_valid_ether_addr(priv->bssid))
1984                 at76_join(priv);
1985         else
1986                 at76_start_monitor(priv);
1987
1988         mutex_unlock(&priv->mtx);
1989
1990         return 0;
1991 }
1992
1993 static void at76_bss_info_changed(struct ieee80211_hw *hw,
1994                                   struct ieee80211_vif *vif,
1995                                   struct ieee80211_bss_conf *conf,
1996                                   u32 changed)
1997 {
1998         struct at76_priv *priv = hw->priv;
1999
2000         at76_dbg(DBG_MAC80211, "%s():", __func__);
2001
2002         if (!(changed & BSS_CHANGED_BSSID))
2003                 return;
2004
2005         at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2006
2007         mutex_lock(&priv->mtx);
2008
2009         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2010
2011         if (is_valid_ether_addr(priv->bssid))
2012                 /* mac80211 is joining a bss */
2013                 at76_join(priv);
2014
2015         mutex_unlock(&priv->mtx);
2016 }
2017
2018 /* must be atomic */
2019 static void at76_configure_filter(struct ieee80211_hw *hw,
2020                                   unsigned int changed_flags,
2021                                   unsigned int *total_flags, u64 multicast)
2022 {
2023         struct at76_priv *priv = hw->priv;
2024         int flags;
2025
2026         at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2027                  "total_flags=0x%08x",
2028                  __func__, changed_flags, *total_flags);
2029
2030         flags = changed_flags & AT76_SUPPORTED_FILTERS;
2031         *total_flags = AT76_SUPPORTED_FILTERS;
2032
2033         /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2034         if (priv->device_unplugged)
2035                 return;
2036
2037         /* FIXME: access to priv->promisc should be protected with
2038          * priv->mtx, but it's impossible because this function needs to be
2039          * atomic */
2040
2041         if (flags && !priv->promisc) {
2042                 /* mac80211 wants us to enable promiscuous mode */
2043                 priv->promisc = 1;
2044         } else if (!flags && priv->promisc) {
2045                 /* we need to disable promiscuous mode */
2046                 priv->promisc = 0;
2047         } else
2048                 return;
2049
2050         ieee80211_queue_work(hw, &priv->work_set_promisc);
2051 }
2052
2053 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2054                         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2055                         struct ieee80211_key_conf *key)
2056 {
2057         struct at76_priv *priv = hw->priv;
2058
2059         int i;
2060
2061         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d "
2062                  "key->keylen %d",
2063                  __func__, cmd, key->cipher, key->keyidx, key->keylen);
2064
2065         if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) &&
2066             (key->cipher != WLAN_CIPHER_SUITE_WEP104))
2067                 return -EOPNOTSUPP;
2068
2069         key->hw_key_idx = key->keyidx;
2070
2071         mutex_lock(&priv->mtx);
2072
2073         switch (cmd) {
2074         case SET_KEY:
2075                 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2076                 priv->wep_keys_len[key->keyidx] = key->keylen;
2077
2078                 /* FIXME: find out how to do this properly */
2079                 priv->wep_key_id = key->keyidx;
2080
2081                 break;
2082         case DISABLE_KEY:
2083         default:
2084                 priv->wep_keys_len[key->keyidx] = 0;
2085                 break;
2086         }
2087
2088         priv->wep_enabled = 0;
2089
2090         for (i = 0; i < WEP_KEYS; i++) {
2091                 if (priv->wep_keys_len[i] != 0)
2092                         priv->wep_enabled = 1;
2093         }
2094
2095         at76_startup_device(priv);
2096
2097         mutex_unlock(&priv->mtx);
2098
2099         return 0;
2100 }
2101
2102 static const struct ieee80211_ops at76_ops = {
2103         .tx = at76_mac80211_tx,
2104         .add_interface = at76_add_interface,
2105         .remove_interface = at76_remove_interface,
2106         .config = at76_config,
2107         .bss_info_changed = at76_bss_info_changed,
2108         .configure_filter = at76_configure_filter,
2109         .start = at76_mac80211_start,
2110         .stop = at76_mac80211_stop,
2111         .hw_scan = at76_hw_scan,
2112         .set_key = at76_set_key,
2113 };
2114
2115 /* Allocate network device and initialize private data */
2116 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2117 {
2118         struct ieee80211_hw *hw;
2119         struct at76_priv *priv;
2120
2121         hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2122         if (!hw) {
2123                 printk(KERN_ERR DRIVER_NAME ": could not register"
2124                        " ieee80211_hw\n");
2125                 return NULL;
2126         }
2127
2128         priv = hw->priv;
2129         priv->hw = hw;
2130
2131         priv->udev = udev;
2132
2133         mutex_init(&priv->mtx);
2134         INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2135         INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2136         INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2137         INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2138
2139         tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2140
2141         priv->pm_mode = AT76_PM_OFF;
2142         priv->pm_period = 0;
2143
2144         /* unit us */
2145         priv->hw->channel_change_time = 100000;
2146
2147         return priv;
2148 }
2149
2150 static int at76_alloc_urbs(struct at76_priv *priv,
2151                            struct usb_interface *interface)
2152 {
2153         struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2154         int i;
2155         int buffer_size;
2156         struct usb_host_interface *iface_desc;
2157
2158         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2159
2160         at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2161                  interface->altsetting[0].desc.bNumEndpoints);
2162
2163         ep_in = NULL;
2164         ep_out = NULL;
2165         iface_desc = interface->cur_altsetting;
2166         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2167                 endpoint = &iface_desc->endpoint[i].desc;
2168
2169                 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2170                          __func__, i, endpoint->bEndpointAddress,
2171                          endpoint->bmAttributes);
2172
2173                 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2174                         ep_in = endpoint;
2175
2176                 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2177                         ep_out = endpoint;
2178         }
2179
2180         if (!ep_in || !ep_out) {
2181                 dev_printk(KERN_ERR, &interface->dev,
2182                            "bulk endpoints missing\n");
2183                 return -ENXIO;
2184         }
2185
2186         priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2187         priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2188
2189         priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2190         priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2191         if (!priv->rx_urb || !priv->tx_urb) {
2192                 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2193                 return -ENOMEM;
2194         }
2195
2196         buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2197         priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2198         if (!priv->bulk_out_buffer) {
2199                 dev_printk(KERN_ERR, &interface->dev,
2200                            "cannot allocate output buffer\n");
2201                 return -ENOMEM;
2202         }
2203
2204         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2205
2206         return 0;
2207 }
2208
2209 static struct ieee80211_rate at76_rates[] = {
2210         { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2211         { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2212         { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2213         { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2214 };
2215
2216 static struct ieee80211_channel at76_channels[] = {
2217         { .center_freq = 2412, .hw_value = 1 },
2218         { .center_freq = 2417, .hw_value = 2 },
2219         { .center_freq = 2422, .hw_value = 3 },
2220         { .center_freq = 2427, .hw_value = 4 },
2221         { .center_freq = 2432, .hw_value = 5 },
2222         { .center_freq = 2437, .hw_value = 6 },
2223         { .center_freq = 2442, .hw_value = 7 },
2224         { .center_freq = 2447, .hw_value = 8 },
2225         { .center_freq = 2452, .hw_value = 9 },
2226         { .center_freq = 2457, .hw_value = 10 },
2227         { .center_freq = 2462, .hw_value = 11 },
2228         { .center_freq = 2467, .hw_value = 12 },
2229         { .center_freq = 2472, .hw_value = 13 },
2230         { .center_freq = 2484, .hw_value = 14 }
2231 };
2232
2233 static struct ieee80211_supported_band at76_supported_band = {
2234         .channels = at76_channels,
2235         .n_channels = ARRAY_SIZE(at76_channels),
2236         .bitrates = at76_rates,
2237         .n_bitrates = ARRAY_SIZE(at76_rates),
2238 };
2239
2240 /* Register network device and initialize the hardware */
2241 static int at76_init_new_device(struct at76_priv *priv,
2242                                 struct usb_interface *interface)
2243 {
2244         struct wiphy *wiphy;
2245         size_t len;
2246         int ret;
2247
2248         /* set up the endpoint information */
2249         /* check out the endpoints */
2250
2251         at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2252                  interface->cur_altsetting->desc.bNumEndpoints);
2253
2254         ret = at76_alloc_urbs(priv, interface);
2255         if (ret < 0)
2256                 goto exit;
2257
2258         /* MAC address */
2259         ret = at76_get_hw_config(priv);
2260         if (ret < 0) {
2261                 dev_printk(KERN_ERR, &interface->dev,
2262                            "cannot get MAC address\n");
2263                 goto exit;
2264         }
2265
2266         priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2267
2268         priv->channel = DEF_CHANNEL;
2269         priv->iw_mode = IW_MODE_INFRA;
2270         priv->rts_threshold = DEF_RTS_THRESHOLD;
2271         priv->frag_threshold = DEF_FRAG_THRESHOLD;
2272         priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2273         priv->txrate = TX_RATE_AUTO;
2274         priv->preamble_type = PREAMBLE_TYPE_LONG;
2275         priv->beacon_period = 100;
2276         priv->auth_mode = WLAN_AUTH_OPEN;
2277         priv->scan_min_time = DEF_SCAN_MIN_TIME;
2278         priv->scan_max_time = DEF_SCAN_MAX_TIME;
2279         priv->scan_mode = SCAN_TYPE_ACTIVE;
2280         priv->device_unplugged = 0;
2281
2282         /* mac80211 initialisation */
2283         wiphy = priv->hw->wiphy;
2284         priv->hw->wiphy->max_scan_ssids = 1;
2285         priv->hw->wiphy->max_scan_ie_len = 0;
2286         priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2287         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2288         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2289                           IEEE80211_HW_SIGNAL_UNSPEC;
2290         priv->hw->max_signal = 100;
2291
2292         SET_IEEE80211_DEV(priv->hw, &interface->dev);
2293         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2294
2295         len = sizeof(wiphy->fw_version);
2296         snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2297                  priv->fw_version.major, priv->fw_version.minor,
2298                  priv->fw_version.patch, priv->fw_version.build);
2299
2300         wiphy->hw_version = priv->board_type;
2301
2302         ret = ieee80211_register_hw(priv->hw);
2303         if (ret) {
2304                 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2305                        ret);
2306                 goto exit;
2307         }
2308
2309         priv->mac80211_registered = 1;
2310
2311         wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2312                    dev_name(&interface->dev), priv->mac_addr,
2313                    priv->fw_version.major, priv->fw_version.minor,
2314                    priv->fw_version.patch, priv->fw_version.build);
2315         wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2316                    priv->regulatory_domain, priv->domain->name);
2317
2318 exit:
2319         return ret;
2320 }
2321
2322 static void at76_delete_device(struct at76_priv *priv)
2323 {
2324         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2325
2326         /* The device is gone, don't bother turning it off */
2327         priv->device_unplugged = 1;
2328
2329         tasklet_kill(&priv->rx_tasklet);
2330
2331         if (priv->mac80211_registered)
2332                 ieee80211_unregister_hw(priv->hw);
2333
2334         if (priv->tx_urb) {
2335                 usb_kill_urb(priv->tx_urb);
2336                 usb_free_urb(priv->tx_urb);
2337         }
2338         if (priv->rx_urb) {
2339                 usb_kill_urb(priv->rx_urb);
2340                 usb_free_urb(priv->rx_urb);
2341         }
2342
2343         at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2344
2345         kfree(priv->bulk_out_buffer);
2346
2347         del_timer_sync(&ledtrig_tx_timer);
2348
2349         kfree_skb(priv->rx_skb);
2350
2351         usb_put_dev(priv->udev);
2352
2353         at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2354                  __func__);
2355         ieee80211_free_hw(priv->hw);
2356
2357         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2358 }
2359
2360 static int at76_probe(struct usb_interface *interface,
2361                       const struct usb_device_id *id)
2362 {
2363         int ret;
2364         struct at76_priv *priv;
2365         struct fwentry *fwe;
2366         struct usb_device *udev;
2367         int op_mode;
2368         int need_ext_fw = 0;
2369         struct mib_fw_version fwv;
2370         int board_type = (int)id->driver_info;
2371
2372         udev = usb_get_dev(interface_to_usbdev(interface));
2373
2374         /* Load firmware into kernel memory */
2375         fwe = at76_load_firmware(udev, board_type);
2376         if (!fwe) {
2377                 ret = -ENOENT;
2378                 goto error;
2379         }
2380
2381         op_mode = at76_get_op_mode(udev);
2382
2383         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2384
2385         /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2386            we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2387
2388         if (op_mode == OPMODE_HW_CONFIG_MODE) {
2389                 dev_printk(KERN_ERR, &interface->dev,
2390                            "cannot handle a device in HW_CONFIG_MODE\n");
2391                 ret = -EBUSY;
2392                 goto error;
2393         }
2394
2395         if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2396             && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2397                 /* download internal firmware part */
2398                 dev_printk(KERN_DEBUG, &interface->dev,
2399                            "downloading internal firmware\n");
2400                 ret = at76_load_internal_fw(udev, fwe);
2401                 if (ret < 0) {
2402                         dev_printk(KERN_ERR, &interface->dev,
2403                                    "error %d downloading internal firmware\n",
2404                                    ret);
2405                         goto error;
2406                 }
2407                 usb_put_dev(udev);
2408                 return ret;
2409         }
2410
2411         /* Internal firmware already inside the device.  Get firmware
2412          * version to test if external firmware is loaded.
2413          * This works only for newer firmware, e.g. the Intersil 0.90.x
2414          * says "control timeout on ep0in" and subsequent
2415          * at76_get_op_mode() fail too :-( */
2416
2417         /* if version >= 0.100.x.y or device with built-in flash we can
2418          * query the device for the fw version */
2419         if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2420             || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2421                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2422                 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2423                         need_ext_fw = 1;
2424         } else
2425                 /* No way to check firmware version, reload to be sure */
2426                 need_ext_fw = 1;
2427
2428         if (need_ext_fw) {
2429                 dev_printk(KERN_DEBUG, &interface->dev,
2430                            "downloading external firmware\n");
2431
2432                 ret = at76_load_external_fw(udev, fwe);
2433                 if (ret)
2434                         goto error;
2435
2436                 /* Re-check firmware version */
2437                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2438                 if (ret < 0) {
2439                         dev_printk(KERN_ERR, &interface->dev,
2440                                    "error %d getting firmware version\n", ret);
2441                         goto error;
2442                 }
2443         }
2444
2445         priv = at76_alloc_new_device(udev);
2446         if (!priv) {
2447                 ret = -ENOMEM;
2448                 goto error;
2449         }
2450
2451         usb_set_intfdata(interface, priv);
2452
2453         memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2454         priv->board_type = board_type;
2455
2456         ret = at76_init_new_device(priv, interface);
2457         if (ret < 0)
2458                 at76_delete_device(priv);
2459
2460         return ret;
2461
2462 error:
2463         usb_put_dev(udev);
2464         return ret;
2465 }
2466
2467 static void at76_disconnect(struct usb_interface *interface)
2468 {
2469         struct at76_priv *priv;
2470
2471         priv = usb_get_intfdata(interface);
2472         usb_set_intfdata(interface, NULL);
2473
2474         /* Disconnect after loading internal firmware */
2475         if (!priv)
2476                 return;
2477
2478         wiphy_info(priv->hw->wiphy, "disconnecting\n");
2479         at76_delete_device(priv);
2480         dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2481 }
2482
2483 /* Structure for registering this driver with the USB subsystem */
2484 static struct usb_driver at76_driver = {
2485         .name = DRIVER_NAME,
2486         .probe = at76_probe,
2487         .disconnect = at76_disconnect,
2488         .id_table = dev_table,
2489 };
2490
2491 static int __init at76_mod_init(void)
2492 {
2493         int result;
2494
2495         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2496
2497         mutex_init(&fw_mutex);
2498
2499         /* register this driver with the USB subsystem */
2500         result = usb_register(&at76_driver);
2501         if (result < 0)
2502                 printk(KERN_ERR DRIVER_NAME
2503                        ": usb_register failed (status %d)\n", result);
2504
2505         led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2506         return result;
2507 }
2508
2509 static void __exit at76_mod_exit(void)
2510 {
2511         int i;
2512
2513         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2514         usb_deregister(&at76_driver);
2515         for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2516                 if (firmwares[i].fw)
2517                         release_firmware(firmwares[i].fw);
2518         }
2519         led_trigger_unregister_simple(ledtrig_tx);
2520 }
2521
2522 module_param_named(debug, at76_debug, uint, 0600);
2523 MODULE_PARM_DESC(debug, "Debugging level");
2524
2525 module_init(at76_mod_init);
2526 module_exit(at76_mod_exit);
2527
2528 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2529 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2530 MODULE_AUTHOR("Alex <alex@foogod.com>");
2531 MODULE_AUTHOR("Nick Jones");
2532 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2533 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2534 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2535 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2536 MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
2537 MODULE_DESCRIPTION(DRIVER_DESC);
2538 MODULE_LICENSE("GPL");