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  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This file is part of the Berlios driver for WLAN USB devices based on the
  17  * Atmel AT76C503A/505/505A.
  18  *
  19  * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
  20  *
  21  * TODO list is at the wiki:
  22  *
  23  * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
  24  *
  25  */
  26
  27 #include <linux/init.h>
  28 #include <linux/kernel.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/slab.h>
  32 #include <linux/module.h>
  33 #include <linux/spinlock.h>
  34 #include <linux/list.h>
  35 #include <linux/usb.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/if_arp.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/ethtool.h>
  40 #include <linux/wireless.h>
  41 #include <net/iw_handler.h>
  42 #include <net/ieee80211_radiotap.h>
  43 #include <linux/firmware.h>
  44 #include <linux/leds.h>
  45 #include <net/mac80211.h>
  46
  47 #include "at76c50x-usb.h"
  48
  49 /* Version information */
  50 #define DRIVER_NAME "at76c50x-usb"
  51 #define DRIVER_VERSION  "0.17"
  52 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
  53
  54 /* at76_debug bits */
  55 #define DBG_PROGRESS            0x00000001      /* authentication/accociation */
  56 #define DBG_BSS_TABLE           0x00000002      /* show BSS table after scans */
  57 #define DBG_IOCTL               0x00000004      /* ioctl calls / settings */
  58 #define DBG_MAC_STATE           0x00000008      /* MAC state transitions */
  59 #define DBG_TX_DATA             0x00000010      /* tx header */
  60 #define DBG_TX_DATA_CONTENT     0x00000020      /* tx content */
  61 #define DBG_TX_MGMT             0x00000040      /* tx management */
  62 #define DBG_RX_DATA             0x00000080      /* rx data header */
  63 #define DBG_RX_DATA_CONTENT     0x00000100      /* rx data content */
  64 #define DBG_RX_MGMT             0x00000200      /* rx mgmt frame headers */
  65 #define DBG_RX_BEACON           0x00000400      /* rx beacon */
  66 #define DBG_RX_CTRL             0x00000800      /* rx control */
  67 #define DBG_RX_MGMT_CONTENT     0x00001000      /* rx mgmt content */
  68 #define DBG_RX_FRAGS            0x00002000      /* rx data fragment handling */
  69 #define DBG_DEVSTART            0x00004000      /* fw download, device start */
  70 #define DBG_URB                 0x00008000      /* rx urb status, ... */
  71 #define DBG_RX_ATMEL_HDR        0x00010000      /* Atmel-specific Rx headers */
  72 #define DBG_PROC_ENTRY          0x00020000      /* procedure entries/exits */
  73 #define DBG_PM                  0x00040000      /* power management settings */
  74 #define DBG_BSS_MATCH           0x00080000      /* BSS match failures */
  75 #define DBG_PARAMS              0x00100000      /* show configured parameters */
  76 #define DBG_WAIT_COMPLETE       0x00200000      /* command completion */
  77 #define DBG_RX_FRAGS_SKB        0x00400000      /* skb header of Rx fragments */
  78 #define DBG_BSS_TABLE_RM        0x00800000      /* purging bss table entries */
  79 #define DBG_MONITOR_MODE        0x01000000      /* monitor mode */
  80 #define DBG_MIB                 0x02000000      /* dump all MIBs on startup */
  81 #define DBG_MGMT_TIMER          0x04000000      /* dump mgmt_timer ops */
  82 #define DBG_WE_EVENTS           0x08000000      /* dump wireless events */
  83 #define DBG_FW                  0x10000000      /* firmware download */
  84 #define DBG_DFU                 0x20000000      /* device firmware upgrade */
  85 #define DBG_CMD                 0x40000000
  86 #define DBG_MAC80211            0x80000000
  87
  88 #define DBG_DEFAULTS            0
  89
  90 /* Use our own dbg macro */
  91 #define at76_dbg(bits, format, arg...) \
  92         do { \
  93                 if (at76_debug & (bits))                                 \
  94                         printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
  95                                ## arg);                                  \
  96         } while (0)
  97
  98 #define at76_dbg_dump(bits, buf, len, format, arg...)   \
  99         do { \
 100                 if (at76_debug & (bits)) { \
 101                         printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , \
 102                                ## arg);                                  \
 103                         print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,     \
 104                                              buf, len);                  \
 105                 }                                                        \
 106         } while (0)
 107
 108 static uint at76_debug = DBG_DEFAULTS;
 109
 110 /* Protect against concurrent firmware loading and parsing */
 111 static struct mutex fw_mutex;
 112
 113 static struct fwentry firmwares[] = {
 114         [0] = { "" },
 115         [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
 116         [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
 117         [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
 118         [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
 119         [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
 120         [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
 121         [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
 122         [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
 123 };
 124 MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
 125 MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
 126 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
 127 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
 128 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
 129 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
 130 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
 131 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
 132
 133 #define USB_DEVICE_DATA(__ops)  .driver_info = (kernel_ulong_t)(__ops)
 134
 135 static struct usb_device_id dev_table[] = {
 136         /*
 137          * at76c503-i3861
 138          */
 139         /* Generic AT76C503/3861 device */
 140         { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 141         /* Linksys WUSB11 v2.1/v2.6 */
 142         { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 143         /* Netgear MA101 rev. A */
 144         { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 145         /* Tekram U300C / Allnet ALL0193 */
 146         { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 147         /* HP HN210W J7801A */
 148         { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 149         /* Sitecom/Z-Com/Zyxel M4Y-750 */
 150         { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 151         /* Dynalink/Askey WLL013 (intersil) */
 152         { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 153         /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
 154         { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 155         /* BenQ AWL300 */
 156         { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 157         /* Addtron AWU-120, Compex WLU11 */
 158         { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 159         /* Intel AP310 AnyPoint II USB */
 160         { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 161         /* Dynalink L11U */
 162         { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 163         /* Arescom WL-210, FCC id 07J-GL2411USB */
 164         { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 165         /* I-O DATA WN-B11/USB */
 166         { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 167         /* BT Voyager 1010 */
 168         { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 169         /*
 170          * at76c503-i3863
 171          */
 172         /* Generic AT76C503/3863 device */
 173         { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 174         /* Samsung SWL-2100U */
 175         { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 176         /*
 177          * at76c503-rfmd
 178          */
 179         /* Generic AT76C503/RFMD device */
 180         { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 181         /* Dynalink/Askey WLL013 (rfmd) */
 182         { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
 183         /* Linksys WUSB11 v2.6 */
 184         { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
 185         /* Network Everywhere NWU11B */
 186         { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
 187         /* Netgear MA101 rev. B */
 188         { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 189         /* D-Link DWL-120 rev. E */
 190         { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
 191         /* Actiontec 802UAT1, HWU01150-01UK */
 192         { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 193         /* AirVast W-Buddie WN210 */
 194         { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 195         /* Dick Smith Electronics XH1153 802.11b USB adapter */
 196         { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
 197         /* CNet CNUSB611 */
 198         { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
 199         /* FiberLine FL-WL200U */
 200         { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
 201         /* BenQ AWL400 USB stick */
 202         { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
 203         /* 3Com 3CRSHEW696 */
 204         { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
 205         /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
 206         { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
 207         /* Belkin F5D6050, version 2 */
 208         { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
 209         /* iBlitzz, BWU613 (not *B or *SB) */
 210         { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
 211         /* Gigabyte GN-WLBM101 */
 212         { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
 213         /* Planex GW-US11S */
 214         { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
 215         /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
 216         { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
 217         /* Corega Wireless LAN USB-11 mini */
 218         { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
 219         /* Corega Wireless LAN USB-11 mini2 */
 220         { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
 221         /* Uniden PCW100 */
 222         { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
 223         /*
 224          * at76c503-rfmd-acc
 225          */
 226         /* SMC2664W */
 227         { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
 228         /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
 229         { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
 230         /*
 231          * at76c505-rfmd
 232          */
 233         /* Generic AT76C505/RFMD */
 234         { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
 235         /*
 236          * at76c505-rfmd2958
 237          */
 238         /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
 239         { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 240         /* Fiberline FL-WL240U */
 241         { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
 242         /* CNet CNUSB-611G */
 243         { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
 244         /* Linksys WUSB11 v2.8 */
 245         { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
 246         /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
 247         { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
 248         /* Corega WLAN USB Stick 11 */
 249         { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 250         /* Microstar MSI Box MS6978 */
 251         { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
 252         /*
 253          * at76c505a-rfmd2958
 254          */
 255         /* Generic AT76C505A device */
 256         { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
 257         /* Generic AT76C505AS device */
 258         { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
 259         /* Siemens Gigaset USB WLAN Adapter 11 */
 260         { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
 261         /* OQO Model 01+ Internal Wi-Fi */
 262         { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
 263         /*
 264          * at76c505amx-rfmd
 265          */
 266         /* Generic AT76C505AMX device */
 267         { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
 268         { }
 269 };
 270
 271 MODULE_DEVICE_TABLE(usb, dev_table);
 272
 273 /* Supported rates of this hardware, bit 7 marks basic rates */
 274 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
 275
 276 static const char *const preambles[] = { "long", "short", "auto" };
 277
 278 /* Firmware download */
 279 /* DFU states */
 280 #define STATE_IDLE                      0x00
 281 #define STATE_DETACH                    0x01
 282 #define STATE_DFU_IDLE                  0x02
 283 #define STATE_DFU_DOWNLOAD_SYNC         0x03
 284 #define STATE_DFU_DOWNLOAD_BUSY         0x04
 285 #define STATE_DFU_DOWNLOAD_IDLE         0x05
 286 #define STATE_DFU_MANIFEST_SYNC         0x06
 287 #define STATE_DFU_MANIFEST              0x07
 288 #define STATE_DFU_MANIFEST_WAIT_RESET   0x08
 289 #define STATE_DFU_UPLOAD_IDLE           0x09
 290 #define STATE_DFU_ERROR                 0x0a
 291
 292 /* DFU commands */
 293 #define DFU_DETACH                      0
 294 #define DFU_DNLOAD                      1
 295 #define DFU_UPLOAD                      2
 296 #define DFU_GETSTATUS                   3
 297 #define DFU_CLRSTATUS                   4
 298 #define DFU_GETSTATE                    5
 299 #define DFU_ABORT                       6
 300
 301 #define FW_BLOCK_SIZE 1024
 302
 303 struct dfu_status {
 304         unsigned char status;
 305         unsigned char poll_timeout[3];
 306         unsigned char state;
 307         unsigned char string;
 308 } __attribute__((packed));
 309
 310 static inline int at76_is_intersil(enum board_type board)
 311 {
 312         return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
 313 }
 314
 315 static inline int at76_is_503rfmd(enum board_type board)
 316 {
 317         return (board == BOARD_503 || board == BOARD_503_ACC);
 318 }
 319
 320 static inline int at76_is_505a(enum board_type board)
 321 {
 322         return (board == BOARD_505A || board == BOARD_505AMX);
 323 }
 324
 325 /* Load a block of the first (internal) part of the firmware */
 326 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
 327                                   void *block, int size)
 328 {
 329         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
 330                                USB_TYPE_CLASS | USB_DIR_OUT |
 331                                USB_RECIP_INTERFACE, blockno, 0, block, size,
 332                                USB_CTRL_GET_TIMEOUT);
 333 }
 334
 335 static int at76_dfu_get_status(struct usb_device *udev,
 336                                struct dfu_status *status)
 337 {
 338         int ret;
 339
 340         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
 341                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 342                               0, 0, status, sizeof(struct dfu_status),
 343                               USB_CTRL_GET_TIMEOUT);
 344         return ret;
 345 }
 346
 347 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
 348 {
 349         int ret;
 350
 351         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
 352                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 353                               0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
 354         return ret;
 355 }
 356
 357 /* Convert timeout from the DFU status to jiffies */
 358 static inline unsigned long at76_get_timeout(struct dfu_status *s)
 359 {
 360         return msecs_to_jiffies((s->poll_timeout[2] << 16)
 361                                 | (s->poll_timeout[1] << 8)
 362                                 | (s->poll_timeout[0]));
 363 }
 364
 365 /* Load internal firmware from the buffer.  If manifest_sync_timeout > 0, use
 366  * its value in jiffies in the MANIFEST_SYNC state.  */
 367 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 368                                 int manifest_sync_timeout)
 369 {
 370         u8 *block;
 371         struct dfu_status dfu_stat_buf;
 372         int ret = 0;
 373         int need_dfu_state = 1;
 374         int is_done = 0;
 375         u8 dfu_state = 0;
 376         u32 dfu_timeout = 0;
 377         int bsize = 0;
 378         int blockno = 0;
 379
 380         at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
 381                  manifest_sync_timeout);
 382
 383         if (!size) {
 384                 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
 385                 return -EINVAL;
 386         }
 387
 388         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
 389         if (!block)
 390                 return -ENOMEM;
 391
 392         do {
 393                 if (need_dfu_state) {
 394                         ret = at76_dfu_get_state(udev, &dfu_state);
 395                         if (ret < 0) {
 396                                 dev_printk(KERN_ERR, &udev->dev,
 397                                            "cannot get DFU state: %d\n", ret);
 398                                 goto exit;
 399                         }
 400                         need_dfu_state = 0;
 401                 }
 402
 403                 switch (dfu_state) {
 404                 case STATE_DFU_DOWNLOAD_SYNC:
 405                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
 406                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 407                         if (ret >= 0) {
 408                                 dfu_state = dfu_stat_buf.state;
 409                                 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 410                                 need_dfu_state = 0;
 411                         } else
 412                                 dev_printk(KERN_ERR, &udev->dev,
 413                                            "at76_dfu_get_status returned %d\n",
 414                                            ret);
 415                         break;
 416
 417                 case STATE_DFU_DOWNLOAD_BUSY:
 418                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
 419                         need_dfu_state = 1;
 420
 421                         at76_dbg(DBG_DFU, "DFU: Resetting device");
 422                         schedule_timeout_interruptible(dfu_timeout);
 423                         break;
 424
 425                 case STATE_DFU_DOWNLOAD_IDLE:
 426                         at76_dbg(DBG_DFU, "DOWNLOAD...");
 427                         /* fall through */
 428                 case STATE_DFU_IDLE:
 429                         at76_dbg(DBG_DFU, "DFU IDLE");
 430
 431                         bsize = min_t(int, size, FW_BLOCK_SIZE);
 432                         memcpy(block, buf, bsize);
 433                         at76_dbg(DBG_DFU, "int fw, size left = %5d, "
 434                                  "bsize = %4d, blockno = %2d", size, bsize,
 435                                  blockno);
 436                         ret =
 437                             at76_load_int_fw_block(udev, blockno, block, bsize);
 438                         buf += bsize;
 439                         size -= bsize;
 440                         blockno++;
 441
 442                         if (ret != bsize)
 443                                 dev_printk(KERN_ERR, &udev->dev,
 444                                            "at76_load_int_fw_block "
 445                                            "returned %d\n", ret);
 446                         need_dfu_state = 1;
 447                         break;
 448
 449                 case STATE_DFU_MANIFEST_SYNC:
 450                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
 451
 452                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 453                         if (ret < 0)
 454                                 break;
 455
 456                         dfu_state = dfu_stat_buf.state;
 457                         dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 458                         need_dfu_state = 0;
 459
 460                         /* override the timeout from the status response,
 461                            needed for AT76C505A */
 462                         if (manifest_sync_timeout > 0)
 463                                 dfu_timeout = manifest_sync_timeout;
 464
 465                         at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
 466                         schedule_timeout_interruptible(dfu_timeout);
 467                         break;
 468
 469                 case STATE_DFU_MANIFEST:
 470                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
 471                         is_done = 1;
 472                         break;
 473
 474                 case STATE_DFU_MANIFEST_WAIT_RESET:
 475                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
 476                         is_done = 1;
 477                         break;
 478
 479                 case STATE_DFU_UPLOAD_IDLE:
 480                         at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
 481                         break;
 482
 483                 case STATE_DFU_ERROR:
 484                         at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
 485                         ret = -EPIPE;
 486                         break;
 487
 488                 default:
 489                         at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
 490                         ret = -EINVAL;
 491                         break;
 492                 }
 493         } while (!is_done && (ret >= 0));
 494
 495 exit:
 496         kfree(block);
 497         if (ret >= 0)
 498                 ret = 0;
 499
 500         return ret;
 501 }
 502
 503 #define HEX2STR_BUFFERS 4
 504 #define HEX2STR_MAX_LEN 64
 505 #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
 506
 507 /* Convert binary data into hex string */
 508 static char *hex2str(void *buf, int len)
 509 {
 510         static atomic_t a = ATOMIC_INIT(0);
 511         static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
 512         char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
 513         char *obuf = ret;
 514         u8 *ibuf = buf;
 515
 516         if (len > HEX2STR_MAX_LEN)
 517                 len = HEX2STR_MAX_LEN;
 518
 519         if (len <= 0) {
 520                 ret[0] = '\0';
 521                 return ret;
 522         }
 523
 524         while (len--) {
 525                 *obuf++ = BIN2HEX(*ibuf >> 4);
 526                 *obuf++ = BIN2HEX(*ibuf & 0xf);
 527                 *obuf++ = '-';
 528                 ibuf++;
 529         }
 530         *(--obuf) = '\0';
 531
 532         return ret;
 533 }
 534
 535 /* LED trigger */
 536 static int tx_activity;
 537 static void at76_ledtrig_tx_timerfunc(unsigned long data);
 538 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
 539 DEFINE_LED_TRIGGER(ledtrig_tx);
 540
 541 static void at76_ledtrig_tx_timerfunc(unsigned long data)
 542 {
 543         static int tx_lastactivity;
 544
 545         if (tx_lastactivity != tx_activity) {
 546                 tx_lastactivity = tx_activity;
 547                 led_trigger_event(ledtrig_tx, LED_FULL);
 548                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 549         } else
 550                 led_trigger_event(ledtrig_tx, LED_OFF);
 551 }
 552
 553 static void at76_ledtrig_tx_activity(void)
 554 {
 555         tx_activity++;
 556         if (!timer_pending(&ledtrig_tx_timer))
 557                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 558 }
 559
 560 static int at76_remap(struct usb_device *udev)
 561 {
 562         int ret;
 563         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
 564                               USB_TYPE_VENDOR | USB_DIR_OUT |
 565                               USB_RECIP_INTERFACE, 0, 0, NULL, 0,
 566                               USB_CTRL_GET_TIMEOUT);
 567         if (ret < 0)
 568                 return ret;
 569         return 0;
 570 }
 571
 572 static int at76_get_op_mode(struct usb_device *udev)
 573 {
 574         int ret;
 575         u8 saved;
 576         u8 *op_mode;
 577
 578         op_mode = kmalloc(1, GFP_NOIO);
 579         if (!op_mode)
 580                 return -ENOMEM;
 581         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 582                               USB_TYPE_VENDOR | USB_DIR_IN |
 583                               USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
 584                               USB_CTRL_GET_TIMEOUT);
 585         saved = *op_mode;
 586         kfree(op_mode);
 587
 588         if (ret < 0)
 589                 return ret;
 590         else if (ret < 1)
 591                 return -EIO;
 592         else
 593                 return saved;
 594 }
 595
 596 /* Load a block of the second ("external") part of the firmware */
 597 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
 598                                          void *block, int size)
 599 {
 600         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 601                                USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 602                                0x0802, blockno, block, size,
 603                                USB_CTRL_GET_TIMEOUT);
 604 }
 605
 606 static inline int at76_get_hw_cfg(struct usb_device *udev,
 607                                   union at76_hwcfg *buf, int buf_size)
 608 {
 609         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 610                                USB_TYPE_VENDOR | USB_DIR_IN |
 611                                USB_RECIP_INTERFACE, 0x0a02, 0,
 612                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 613 }
 614
 615 /* Intersil boards use a different "value" for GetHWConfig requests */
 616 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
 617                                            union at76_hwcfg *buf, int buf_size)
 618 {
 619         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 620                                USB_TYPE_VENDOR | USB_DIR_IN |
 621                                USB_RECIP_INTERFACE, 0x0902, 0,
 622                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 623 }
 624
 625 /* Get the hardware configuration for the adapter and put it to the appropriate
 626  * fields of 'priv' (the GetHWConfig request and interpretation of the result
 627  * depends on the board type) */
 628 static int at76_get_hw_config(struct at76_priv *priv)
 629 {
 630         int ret;
 631         union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
 632
 633         if (!hwcfg)
 634                 return -ENOMEM;
 635
 636         if (at76_is_intersil(priv->board_type)) {
 637                 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
 638                                                sizeof(hwcfg->i));
 639                 if (ret < 0)
 640                         goto exit;
 641                 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
 642                 priv->regulatory_domain = hwcfg->i.regulatory_domain;
 643         } else if (at76_is_503rfmd(priv->board_type)) {
 644                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
 645                 if (ret < 0)
 646                         goto exit;
 647                 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
 648                 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
 649         } else {
 650                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
 651                 if (ret < 0)
 652                         goto exit;
 653                 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
 654                 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
 655         }
 656
 657 exit:
 658         kfree(hwcfg);
 659         if (ret < 0)
 660                 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
 661                        wiphy_name(priv->hw->wiphy), ret);
 662
 663         return ret;
 664 }
 665
 666 static struct reg_domain const *at76_get_reg_domain(u16 code)
 667 {
 668         int i;
 669         static struct reg_domain const fd_tab[] = {
 670                 { 0x10, "FCC (USA)", 0x7ff },   /* ch 1-11 */
 671                 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
 672                 { 0x30, "ETSI (most of Europe)", 0x1fff },      /* ch 1-13 */
 673                 { 0x31, "Spain", 0x600 },       /* ch 10-11 */
 674                 { 0x32, "France", 0x1e00 },     /* ch 10-13 */
 675                 { 0x40, "MKK (Japan)", 0x2000 },        /* ch 14 */
 676                 { 0x41, "MKK1 (Japan)", 0x3fff },       /* ch 1-14 */
 677                 { 0x50, "Israel", 0x3fc },      /* ch 3-9 */
 678                 { 0x00, "<unknown>", 0xffffffff }       /* ch 1-32 */
 679         };
 680
 681         /* Last entry is fallback for unknown domain code */
 682         for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
 683                 if (code == fd_tab[i].code)
 684                         break;
 685
 686         return &fd_tab[i];
 687 }
 688
 689 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
 690                                int buf_size)
 691 {
 692         int ret;
 693
 694         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 695                               USB_TYPE_VENDOR | USB_DIR_IN |
 696                               USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
 697                               USB_CTRL_GET_TIMEOUT);
 698         if (ret >= 0 && ret != buf_size)
 699                 return -EIO;
 700         return ret;
 701 }
 702
 703 /* Return positive number for status, negative for an error */
 704 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
 705 {
 706         u8 *stat_buf;
 707         int ret;
 708
 709         stat_buf = kmalloc(40, GFP_NOIO);
 710         if (!stat_buf)
 711                 return -ENOMEM;
 712
 713         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
 714                         USB_TYPE_VENDOR | USB_DIR_IN |
 715                         USB_RECIP_INTERFACE, cmd, 0, stat_buf,
 716                         40, USB_CTRL_GET_TIMEOUT);
 717         if (ret >= 0)
 718                 ret = stat_buf[5];
 719         kfree(stat_buf);
 720
 721         return ret;
 722 }
 723
 724 #define MAKE_CMD_CASE(c) case (c): return #c
 725 static const char *at76_get_cmd_string(u8 cmd_status)
 726 {
 727         switch (cmd_status) {
 728                 MAKE_CMD_CASE(CMD_SET_MIB);
 729                 MAKE_CMD_CASE(CMD_GET_MIB);
 730                 MAKE_CMD_CASE(CMD_SCAN);
 731                 MAKE_CMD_CASE(CMD_JOIN);
 732                 MAKE_CMD_CASE(CMD_START_IBSS);
 733                 MAKE_CMD_CASE(CMD_RADIO_ON);
 734                 MAKE_CMD_CASE(CMD_RADIO_OFF);
 735                 MAKE_CMD_CASE(CMD_STARTUP);
 736         }
 737
 738         return "UNKNOWN";
 739 }
 740
 741 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
 742                                  int buf_size)
 743 {
 744         int ret;
 745         struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
 746                                                buf_size, GFP_KERNEL);
 747
 748         if (!cmd_buf)
 749                 return -ENOMEM;
 750
 751         cmd_buf->cmd = cmd;
 752         cmd_buf->reserved = 0;
 753         cmd_buf->size = cpu_to_le16(buf_size);
 754         memcpy(cmd_buf->data, buf, buf_size);
 755
 756         at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
 757                       "issuing command %s (0x%02x)",
 758                       at76_get_cmd_string(cmd), cmd);
 759
 760         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 761                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 762                               0, 0, cmd_buf,
 763                               sizeof(struct at76_command) + buf_size,
 764                               USB_CTRL_GET_TIMEOUT);
 765         kfree(cmd_buf);
 766         return ret;
 767 }
 768
 769 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
 770 static const char *at76_get_cmd_status_string(u8 cmd_status)
 771 {
 772         switch (cmd_status) {
 773                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
 774                 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
 775                 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
 776                 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
 777                 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
 778                 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
 779                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
 780                 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
 781                 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
 782         }
 783
 784         return "UNKNOWN";
 785 }
 786
 787 /* Wait until the command is completed */
 788 static int at76_wait_completion(struct at76_priv *priv, int cmd)
 789 {
 790         int status = 0;
 791         unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
 792
 793         do {
 794                 status = at76_get_cmd_status(priv->udev, cmd);
 795                 if (status < 0) {
 796                         printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
 797                                wiphy_name(priv->hw->wiphy), status);
 798                         break;
 799                 }
 800
 801                 at76_dbg(DBG_WAIT_COMPLETE,
 802                          "%s: Waiting on cmd %d, status = %d (%s)",
 803                          wiphy_name(priv->hw->wiphy), cmd, status,
 804                          at76_get_cmd_status_string(status));
 805
 806                 if (status != CMD_STATUS_IN_PROGRESS
 807                     && status != CMD_STATUS_IDLE)
 808                         break;
 809
 810                 schedule_timeout_interruptible(HZ / 10);        /* 100 ms */
 811                 if (time_after(jiffies, timeout)) {
 812                         printk(KERN_ERR
 813                                "%s: completion timeout for command %d\n",
 814                                wiphy_name(priv->hw->wiphy), cmd);
 815                         status = -ETIMEDOUT;
 816                         break;
 817                 }
 818         } while (1);
 819
 820         return status;
 821 }
 822
 823 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
 824 {
 825         int ret;
 826
 827         ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
 828                                     offsetof(struct set_mib_buffer,
 829                                              data) + buf->size);
 830         if (ret < 0)
 831                 return ret;
 832
 833         ret = at76_wait_completion(priv, CMD_SET_MIB);
 834         if (ret != CMD_STATUS_COMPLETE) {
 835                 printk(KERN_INFO
 836                        "%s: set_mib: at76_wait_completion failed "
 837                        "with %d\n", wiphy_name(priv->hw->wiphy), ret);
 838                 ret = -EIO;
 839         }
 840
 841         return ret;
 842 }
 843
 844 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
 845 static int at76_set_radio(struct at76_priv *priv, int enable)
 846 {
 847         int ret;
 848         int cmd;
 849
 850         if (priv->radio_on == enable)
 851                 return 0;
 852
 853         cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
 854
 855         ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
 856         if (ret < 0)
 857                 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
 858                        wiphy_name(priv->hw->wiphy), cmd, ret);
 859         else
 860                 ret = 1;
 861
 862         priv->radio_on = enable;
 863         return ret;
 864 }
 865
 866 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
 867 static int at76_set_pm_mode(struct at76_priv *priv)
 868 {
 869         int ret = 0;
 870
 871         priv->mib_buf.type = MIB_MAC_MGMT;
 872         priv->mib_buf.size = 1;
 873         priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
 874         priv->mib_buf.data.byte = priv->pm_mode;
 875
 876         ret = at76_set_mib(priv, &priv->mib_buf);
 877         if (ret < 0)
 878                 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
 879                        wiphy_name(priv->hw->wiphy), ret);
 880
 881         return ret;
 882 }
 883
 884 static int at76_set_preamble(struct at76_priv *priv, u8 type)
 885 {
 886         int ret = 0;
 887
 888         priv->mib_buf.type = MIB_LOCAL;
 889         priv->mib_buf.size = 1;
 890         priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
 891         priv->mib_buf.data.byte = type;
 892
 893         ret = at76_set_mib(priv, &priv->mib_buf);
 894         if (ret < 0)
 895                 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
 896                        wiphy_name(priv->hw->wiphy), ret);
 897
 898         return ret;
 899 }
 900
 901 static int at76_set_frag(struct at76_priv *priv, u16 size)
 902 {
 903         int ret = 0;
 904
 905         priv->mib_buf.type = MIB_MAC;
 906         priv->mib_buf.size = 2;
 907         priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
 908         priv->mib_buf.data.word = cpu_to_le16(size);
 909
 910         ret = at76_set_mib(priv, &priv->mib_buf);
 911         if (ret < 0)
 912                 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
 913                        wiphy_name(priv->hw->wiphy), ret);
 914
 915         return ret;
 916 }
 917
 918 static int at76_set_rts(struct at76_priv *priv, u16 size)
 919 {
 920         int ret = 0;
 921
 922         priv->mib_buf.type = MIB_MAC;
 923         priv->mib_buf.size = 2;
 924         priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
 925         priv->mib_buf.data.word = cpu_to_le16(size);
 926
 927         ret = at76_set_mib(priv, &priv->mib_buf);
 928         if (ret < 0)
 929                 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
 930                        wiphy_name(priv->hw->wiphy), ret);
 931
 932         return ret;
 933 }
 934
 935 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
 936 {
 937         int ret = 0;
 938
 939         priv->mib_buf.type = MIB_LOCAL;
 940         priv->mib_buf.size = 1;
 941         priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
 942         priv->mib_buf.data.byte = onoff;
 943
 944         ret = at76_set_mib(priv, &priv->mib_buf);
 945         if (ret < 0)
 946                 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
 947                        wiphy_name(priv->hw->wiphy), ret);
 948
 949         return ret;
 950 }
 951
 952 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
 953 {
 954         int i;
 955         int ret;
 956         struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
 957                                          GFP_KERNEL);
 958
 959         if (!m)
 960                 return;
 961
 962         ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
 963                            sizeof(struct mib_mac_addr));
 964         if (ret < 0) {
 965                 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
 966                        wiphy_name(priv->hw->wiphy), ret);
 967                 goto exit;
 968         }
 969
 970         at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
 971                  wiphy_name(priv->hw->wiphy),
 972                  m->mac_addr, m->res[0], m->res[1]);
 973         for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
 974                 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
 975                          "status %d", wiphy_name(priv->hw->wiphy), i,
 976                          m->group_addr[i], m->group_addr_status[i]);
 977 exit:
 978         kfree(m);
 979 }
 980
 981 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
 982 {
 983         int i;
 984         int ret;
 985         int key_len;
 986         struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
 987
 988         if (!m)
 989                 return;
 990
 991         ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
 992                            sizeof(struct mib_mac_wep));
 993         if (ret < 0) {
 994                 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
 995                        wiphy_name(priv->hw->wiphy), ret);
 996                 goto exit;
 997         }
 998
 999         at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1000                  "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1001                  "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
1002                  m->privacy_invoked, m->wep_default_key_id,
1003                  m->wep_key_mapping_len, m->exclude_unencrypted,
1004                  le32_to_cpu(m->wep_icv_error_count),
1005                  le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1006                  m->wep_default_key_id);
1007
1008         key_len = (m->encryption_level == 1) ?
1009             WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1010
1011         for (i = 0; i < WEP_KEYS; i++)
1012                 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1013                          wiphy_name(priv->hw->wiphy), i,
1014                          hex2str(m->wep_default_keyvalue[i], key_len));
1015 exit:
1016         kfree(m);
1017 }
1018
1019 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1020 {
1021         int ret;
1022         struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1023                                          GFP_KERNEL);
1024
1025         if (!m)
1026                 return;
1027
1028         ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1029                            sizeof(struct mib_mac_mgmt));
1030         if (ret < 0) {
1031                 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1032                        wiphy_name(priv->hw->wiphy), ret);
1033                 goto exit;
1034         }
1035
1036         at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1037                  "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1038                  "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1039                  "current_bssid %pM current_essid %s current_bss_type %d "
1040                  "pm_mode %d ibss_change %d res %d "
1041                  "multi_domain_capability_implemented %d "
1042                  "international_roaming %d country_string %.3s",
1043                  wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1044                  le16_to_cpu(m->CFP_max_duration),
1045                  le16_to_cpu(m->medium_occupancy_limit),
1046                  le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1047                  m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1048                  m->CFP_period, m->current_bssid,
1049                  hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1050                  m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1051                  m->res, m->multi_domain_capability_implemented,
1052                  m->multi_domain_capability_enabled, m->country_string);
1053 exit:
1054         kfree(m);
1055 }
1056
1057 static void at76_dump_mib_mac(struct at76_priv *priv)
1058 {
1059         int ret;
1060         struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1061
1062         if (!m)
1063                 return;
1064
1065         ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1066         if (ret < 0) {
1067                 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1068                        wiphy_name(priv->hw->wiphy), ret);
1069                 goto exit;
1070         }
1071
1072         at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1073                  "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1074                  "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1075                  "scan_type %d scan_channel %d probe_delay %u "
1076                  "min_channel_time %d max_channel_time %d listen_int %d "
1077                  "desired_ssid %s desired_bssid %pM desired_bsstype %d",
1078                  wiphy_name(priv->hw->wiphy),
1079                  le32_to_cpu(m->max_tx_msdu_lifetime),
1080                  le32_to_cpu(m->max_rx_lifetime),
1081                  le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1082                  le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1083                  m->short_retry_time, m->long_retry_time, m->scan_type,
1084                  m->scan_channel, le16_to_cpu(m->probe_delay),
1085                  le16_to_cpu(m->min_channel_time),
1086                  le16_to_cpu(m->max_channel_time),
1087                  le16_to_cpu(m->listen_interval),
1088                  hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1089                  m->desired_bssid, m->desired_bsstype);
1090 exit:
1091         kfree(m);
1092 }
1093
1094 static void at76_dump_mib_phy(struct at76_priv *priv)
1095 {
1096         int ret;
1097         struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1098
1099         if (!m)
1100                 return;
1101
1102         ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1103         if (ret < 0) {
1104                 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1105                        wiphy_name(priv->hw->wiphy), ret);
1106                 goto exit;
1107         }
1108
1109         at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1110                  "sifs_time %d preamble_length %d plcp_header_length %d "
1111                  "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1112                  "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1113                  "phy_type %d current_reg_domain %d",
1114                  wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1115                  le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1116                  le16_to_cpu(m->preamble_length),
1117                  le16_to_cpu(m->plcp_header_length),
1118                  le16_to_cpu(m->mpdu_max_length),
1119                  le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1120                  m->operation_rate_set[1], m->operation_rate_set[2],
1121                  m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1122                  m->phy_type, m->current_reg_domain);
1123 exit:
1124         kfree(m);
1125 }
1126
1127 static void at76_dump_mib_local(struct at76_priv *priv)
1128 {
1129         int ret;
1130         struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1131
1132         if (!m)
1133                 return;
1134
1135         ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1136         if (ret < 0) {
1137                 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1138                        wiphy_name(priv->hw->wiphy), ret);
1139                 goto exit;
1140         }
1141
1142         at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1143                  "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1144                  "preamble_type %d", wiphy_name(priv->hw->wiphy),
1145                  m->beacon_enable,
1146                  m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1147                  m->preamble_type);
1148 exit:
1149         kfree(m);
1150 }
1151
1152 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1153 {
1154         int ret;
1155         struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1156
1157         if (!m)
1158                 return;
1159
1160         ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1161                            sizeof(struct mib_mdomain));
1162         if (ret < 0) {
1163                 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1164                        wiphy_name(priv->hw->wiphy), ret);
1165                 goto exit;
1166         }
1167
1168         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1169                  wiphy_name(priv->hw->wiphy),
1170                  hex2str(m->channel_list, sizeof(m->channel_list)));
1171
1172         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1173                  wiphy_name(priv->hw->wiphy),
1174                  hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1175 exit:
1176         kfree(m);
1177 }
1178
1179 /* Enable monitor mode */
1180 static int at76_start_monitor(struct at76_priv *priv)
1181 {
1182         struct at76_req_scan scan;
1183         int ret;
1184
1185         memset(&scan, 0, sizeof(struct at76_req_scan));
1186         memset(scan.bssid, 0xff, ETH_ALEN);
1187
1188         scan.channel = priv->channel;
1189         scan.scan_type = SCAN_TYPE_PASSIVE;
1190         scan.international_scan = 0;
1191         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1192         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1193         scan.probe_delay = cpu_to_le16(0);
1194
1195         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1196         if (ret >= 0)
1197                 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1198
1199         return ret;
1200 }
1201
1202 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1203    likely to compensate a flaw in the AT76C503A USB part ... */
1204 static inline int at76_calc_padding(int wlen)
1205 {
1206         /* add the USB TX header */
1207         wlen += AT76_TX_HDRLEN;
1208
1209         wlen = wlen % 64;
1210
1211         if (wlen < 50)
1212                 return 50 - wlen;
1213
1214         if (wlen >= 61)
1215                 return 64 + 50 - wlen;
1216
1217         return 0;
1218 }
1219
1220 static void at76_rx_callback(struct urb *urb)
1221 {
1222         struct at76_priv *priv = urb->context;
1223
1224         priv->rx_tasklet.data = (unsigned long)urb;
1225         tasklet_schedule(&priv->rx_tasklet);
1226         return;
1227 }
1228
1229 static int at76_submit_rx_urb(struct at76_priv *priv)
1230 {
1231         int ret;
1232         int size;
1233         struct sk_buff *skb = priv->rx_skb;
1234
1235         if (!priv->rx_urb) {
1236                 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
1237                        wiphy_name(priv->hw->wiphy), __func__);
1238                 return -EFAULT;
1239         }
1240
1241         if (!skb) {
1242                 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1243                 if (!skb) {
1244                         printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
1245                                wiphy_name(priv->hw->wiphy));
1246                         ret = -ENOMEM;
1247                         goto exit;
1248                 }
1249                 priv->rx_skb = skb;
1250         } else {
1251                 skb_push(skb, skb_headroom(skb));
1252                 skb_trim(skb, 0);
1253         }
1254
1255         size = skb_tailroom(skb);
1256         usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1257                           skb_put(skb, size), size, at76_rx_callback, priv);
1258         ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1259         if (ret < 0) {
1260                 if (ret == -ENODEV)
1261                         at76_dbg(DBG_DEVSTART,
1262                                  "usb_submit_urb returned -ENODEV");
1263                 else
1264                         printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
1265                                wiphy_name(priv->hw->wiphy), ret);
1266         }
1267
1268 exit:
1269         if (ret < 0 && ret != -ENODEV)
1270                 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
1271                        "driver and/or power cycle the device\n",
1272                        wiphy_name(priv->hw->wiphy));
1273
1274         return ret;
1275 }
1276
1277 /* Download external firmware */
1278 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1279 {
1280         int ret;
1281         int op_mode;
1282         int blockno = 0;
1283         int bsize;
1284         u8 *block;
1285         u8 *buf = fwe->extfw;
1286         int size = fwe->extfw_size;
1287
1288         if (!buf || !size)
1289                 return -ENOENT;
1290
1291         op_mode = at76_get_op_mode(udev);
1292         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1293
1294         if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1295                 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1296                            op_mode);
1297                 return -EINVAL;
1298         }
1299
1300         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1301         if (!block)
1302                 return -ENOMEM;
1303
1304         at76_dbg(DBG_DEVSTART, "downloading external firmware");
1305
1306         /* for fw >= 0.100, the device needs an extra empty block */
1307         do {
1308                 bsize = min_t(int, size, FW_BLOCK_SIZE);
1309                 memcpy(block, buf, bsize);
1310                 at76_dbg(DBG_DEVSTART,
1311                          "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1312                          size, bsize, blockno);
1313                 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1314                 if (ret != bsize) {
1315                         dev_printk(KERN_ERR, &udev->dev,
1316                                    "loading %dth firmware block failed: %d\n",
1317                                    blockno, ret);
1318                         goto exit;
1319                 }
1320                 buf += bsize;
1321                 size -= bsize;
1322                 blockno++;
1323         } while (bsize > 0);
1324
1325         if (at76_is_505a(fwe->board_type)) {
1326                 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1327                 schedule_timeout_interruptible(HZ / 5 + 1);
1328         }
1329
1330 exit:
1331         kfree(block);
1332         if (ret < 0)
1333                 dev_printk(KERN_ERR, &udev->dev,
1334                            "downloading external firmware failed: %d\n", ret);
1335         return ret;
1336 }
1337
1338 /* Download internal firmware */
1339 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1340 {
1341         int ret;
1342         int need_remap = !at76_is_505a(fwe->board_type);
1343
1344         ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1345                                    need_remap ? 0 : 2 * HZ);
1346
1347         if (ret < 0) {
1348                 dev_printk(KERN_ERR, &udev->dev,
1349                            "downloading internal fw failed with %d\n", ret);
1350                 goto exit;
1351         }
1352
1353         at76_dbg(DBG_DEVSTART, "sending REMAP");
1354
1355         /* no REMAP for 505A (see SF driver) */
1356         if (need_remap) {
1357                 ret = at76_remap(udev);
1358                 if (ret < 0) {
1359                         dev_printk(KERN_ERR, &udev->dev,
1360                                    "sending REMAP failed with %d\n", ret);
1361                         goto exit;
1362                 }
1363         }
1364
1365         at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1366         schedule_timeout_interruptible(2 * HZ + 1);
1367         usb_reset_device(udev);
1368
1369 exit:
1370         return ret;
1371 }
1372
1373 static int at76_startup_device(struct at76_priv *priv)
1374 {
1375         struct at76_card_config *ccfg = &priv->card_config;
1376         int ret;
1377
1378         at76_dbg(DBG_PARAMS,
1379                  "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1380                  "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1381                  priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1382                  priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1383                  priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1384                  priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1385         at76_dbg(DBG_PARAMS,
1386                  "%s param: preamble %s rts %d retry %d frag %d "
1387                  "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1388                  preambles[priv->preamble_type], priv->rts_threshold,
1389                  priv->short_retry_limit, priv->frag_threshold,
1390                  priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1391                  TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1392                  TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1393                  TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1394                  TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1395         at76_dbg(DBG_PARAMS,
1396                  "%s param: pm_mode %d pm_period %d auth_mode %s "
1397                  "scan_times %d %d scan_mode %s",
1398                  wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1399                  priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1400                  priv->scan_min_time, priv->scan_max_time,
1401                  priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1402
1403         memset(ccfg, 0, sizeof(struct at76_card_config));
1404         ccfg->promiscuous_mode = 0;
1405         ccfg->short_retry_limit = priv->short_retry_limit;
1406
1407         if (priv->wep_enabled) {
1408                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1409                         ccfg->encryption_type = 2;
1410                 else
1411                         ccfg->encryption_type = 1;
1412
1413                 /* jal: always exclude unencrypted if WEP is active */
1414                 ccfg->exclude_unencrypted = 1;
1415         } else {
1416                 ccfg->exclude_unencrypted = 0;
1417                 ccfg->encryption_type = 0;
1418         }
1419
1420         ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1421         ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1422
1423         memcpy(ccfg->basic_rate_set, hw_rates, 4);
1424         /* jal: really needed, we do a set_mib for autorate later ??? */
1425         ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1426         ccfg->channel = priv->channel;
1427         ccfg->privacy_invoked = priv->wep_enabled;
1428         memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1429         ccfg->ssid_len = priv->essid_size;
1430
1431         ccfg->wep_default_key_id = priv->wep_key_id;
1432         memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1433                sizeof(priv->wep_keys));
1434
1435         ccfg->short_preamble = priv->preamble_type;
1436         ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1437
1438         ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1439                                     sizeof(struct at76_card_config));
1440         if (ret < 0) {
1441                 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1442                        wiphy_name(priv->hw->wiphy), ret);
1443                 return ret;
1444         }
1445
1446         at76_wait_completion(priv, CMD_STARTUP);
1447
1448         /* remove BSSID from previous run */
1449         memset(priv->bssid, 0, ETH_ALEN);
1450
1451         if (at76_set_radio(priv, 1) == 1)
1452                 at76_wait_completion(priv, CMD_RADIO_ON);
1453
1454         ret = at76_set_preamble(priv, priv->preamble_type);
1455         if (ret < 0)
1456                 return ret;
1457
1458         ret = at76_set_frag(priv, priv->frag_threshold);
1459         if (ret < 0)
1460                 return ret;
1461
1462         ret = at76_set_rts(priv, priv->rts_threshold);
1463         if (ret < 0)
1464                 return ret;
1465
1466         ret = at76_set_autorate_fallback(priv,
1467                                          priv->txrate == TX_RATE_AUTO ? 1 : 0);
1468         if (ret < 0)
1469                 return ret;
1470
1471         ret = at76_set_pm_mode(priv);
1472         if (ret < 0)
1473                 return ret;
1474
1475         if (at76_debug & DBG_MIB) {
1476                 at76_dump_mib_mac(priv);
1477                 at76_dump_mib_mac_addr(priv);
1478                 at76_dump_mib_mac_mgmt(priv);
1479                 at76_dump_mib_mac_wep(priv);
1480                 at76_dump_mib_mdomain(priv);
1481                 at76_dump_mib_phy(priv);
1482                 at76_dump_mib_local(priv);
1483         }
1484
1485         return 0;
1486 }
1487
1488 /* Enable or disable promiscuous mode */
1489 static void at76_work_set_promisc(struct work_struct *work)
1490 {
1491         struct at76_priv *priv = container_of(work, struct at76_priv,
1492                                               work_set_promisc);
1493         int ret = 0;
1494
1495         if (priv->device_unplugged)
1496                 return;
1497
1498         mutex_lock(&priv->mtx);
1499
1500         priv->mib_buf.type = MIB_LOCAL;
1501         priv->mib_buf.size = 1;
1502         priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1503         priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1504
1505         ret = at76_set_mib(priv, &priv->mib_buf);
1506         if (ret < 0)
1507                 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
1508                        wiphy_name(priv->hw->wiphy), ret);
1509
1510         mutex_unlock(&priv->mtx);
1511 }
1512
1513 /* Submit Rx urb back to the device */
1514 static void at76_work_submit_rx(struct work_struct *work)
1515 {
1516         struct at76_priv *priv = container_of(work, struct at76_priv,
1517                                               work_submit_rx);
1518
1519         mutex_lock(&priv->mtx);
1520         at76_submit_rx_urb(priv);
1521         mutex_unlock(&priv->mtx);
1522 }
1523
1524 static void at76_rx_tasklet(unsigned long param)
1525 {
1526         struct urb *urb = (struct urb *)param;
1527         struct at76_priv *priv = urb->context;
1528         struct at76_rx_buffer *buf;
1529         struct ieee80211_rx_status rx_status = { 0 };
1530
1531         if (priv->device_unplugged) {
1532                 at76_dbg(DBG_DEVSTART, "device unplugged");
1533                 if (urb)
1534                         at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1535                 return;
1536         }
1537
1538         if (!priv->rx_skb || !priv->rx_skb->data)
1539                 return;
1540
1541         buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1542
1543         if (urb->status != 0) {
1544                 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1545                         at76_dbg(DBG_URB,
1546                                  "%s %s: - nonzero Rx bulk status received: %d",
1547                                  __func__, wiphy_name(priv->hw->wiphy),
1548                                  urb->status);
1549                 return;
1550         }
1551
1552         at76_dbg(DBG_RX_ATMEL_HDR,
1553                  "%s: rx frame: rate %d rssi %d noise %d link %d",
1554                  wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1555                  buf->noise_level, buf->link_quality);
1556
1557         skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1558         skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1559         at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1560                       priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1561
1562         rx_status.signal = buf->rssi;
1563         rx_status.flag |= RX_FLAG_DECRYPTED;
1564         rx_status.flag |= RX_FLAG_IV_STRIPPED;
1565
1566         at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1567                  priv->rx_skb->len, priv->rx_skb->data_len);
1568         memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1569         ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1570
1571         /* Use a new skb for the next receive */
1572         priv->rx_skb = NULL;
1573
1574         at76_submit_rx_urb(priv);
1575 }
1576
1577 /* Load firmware into kernel memory and parse it */
1578 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1579                                           enum board_type board_type)
1580 {
1581         int ret;
1582         char *str;
1583         struct at76_fw_header *fwh;
1584         struct fwentry *fwe = &firmwares[board_type];
1585
1586         mutex_lock(&fw_mutex);
1587
1588         if (fwe->loaded) {
1589                 at76_dbg(DBG_FW, "re-using previously loaded fw");
1590                 goto exit;
1591         }
1592
1593         at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1594         ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1595         if (ret < 0) {
1596                 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1597                            fwe->fwname);
1598                 dev_printk(KERN_ERR, &udev->dev,
1599                            "you may need to download the firmware from "
1600                            "http://developer.berlios.de/projects/at76c503a/\n");
1601                 goto exit;
1602         }
1603
1604         at76_dbg(DBG_FW, "got it.");
1605         fwh = (struct at76_fw_header *)(fwe->fw->data);
1606
1607         if (fwe->fw->size <= sizeof(*fwh)) {
1608                 dev_printk(KERN_ERR, &udev->dev,
1609                            "firmware is too short (0x%zx)\n", fwe->fw->size);
1610                 goto exit;
1611         }
1612
1613         /* CRC currently not checked */
1614         fwe->board_type = le32_to_cpu(fwh->board_type);
1615         if (fwe->board_type != board_type) {
1616                 dev_printk(KERN_ERR, &udev->dev,
1617                            "board type mismatch, requested %u, got %u\n",
1618                            board_type, fwe->board_type);
1619                 goto exit;
1620         }
1621
1622         fwe->fw_version.major = fwh->major;
1623         fwe->fw_version.minor = fwh->minor;
1624         fwe->fw_version.patch = fwh->patch;
1625         fwe->fw_version.build = fwh->build;
1626
1627         str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1628         fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1629         fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1630         fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1631         fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1632
1633         fwe->loaded = 1;
1634
1635         dev_printk(KERN_DEBUG, &udev->dev,
1636                    "using firmware %s (version %d.%d.%d-%d)\n",
1637                    fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1638
1639         at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1640                  le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1641                  le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1642         at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1643
1644 exit:
1645         mutex_unlock(&fw_mutex);
1646
1647         if (fwe->loaded)
1648                 return fwe;
1649         else
1650                 return NULL;
1651 }
1652
1653 static void at76_mac80211_tx_callback(struct urb *urb)
1654 {
1655         struct at76_priv *priv = urb->context;
1656         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1657
1658         at76_dbg(DBG_MAC80211, "%s()", __func__);
1659
1660         switch (urb->status) {
1661         case 0:
1662                 /* success */
1663                 info->flags |= IEEE80211_TX_STAT_ACK;
1664                 break;
1665         case -ENOENT:
1666         case -ECONNRESET:
1667                 /* fail, urb has been unlinked */
1668                 /* FIXME: add error message */
1669                 break;
1670         default:
1671                 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1672                          __func__, urb->status);
1673                 break;
1674         }
1675
1676         memset(&info->status, 0, sizeof(info->status));
1677
1678         ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1679
1680         priv->tx_skb = NULL;
1681
1682         ieee80211_wake_queues(priv->hw);
1683 }
1684
1685 static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1686 {
1687         struct at76_priv *priv = hw->priv;
1688         struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1689         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1690         int padding, submit_len, ret;
1691
1692         at76_dbg(DBG_MAC80211, "%s()", __func__);
1693
1694         if (priv->tx_urb->status == -EINPROGRESS) {
1695                 printk(KERN_ERR "%s: %s called while tx urb is pending\n",
1696                        wiphy_name(priv->hw->wiphy), __func__);
1697                 return NETDEV_TX_BUSY;
1698         }
1699
1700         ieee80211_stop_queues(hw);
1701
1702         at76_ledtrig_tx_activity();     /* tell ledtrigger we send a packet */
1703
1704         WARN_ON(priv->tx_skb != NULL);
1705
1706         priv->tx_skb = skb;
1707         padding = at76_calc_padding(skb->len);
1708         submit_len = AT76_TX_HDRLEN + skb->len + padding;
1709
1710         /* setup 'Atmel' header */
1711         memset(tx_buffer, 0, sizeof(*tx_buffer));
1712         tx_buffer->padding = padding;
1713         tx_buffer->wlength = cpu_to_le16(skb->len);
1714         tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1715         memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1716         memcpy(tx_buffer->packet, skb->data, skb->len);
1717
1718         at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1719                  wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1720                  tx_buffer->padding, tx_buffer->tx_rate);
1721
1722         /* send stuff */
1723         at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1724                       "%s(): tx_buffer %d bytes:", __func__, submit_len);
1725         usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1726                           submit_len, at76_mac80211_tx_callback, priv);
1727         ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1728         if (ret) {
1729                 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1730                        wiphy_name(priv->hw->wiphy), ret);
1731                 if (ret == -EINVAL)
1732                         printk(KERN_ERR
1733                                "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
1734                                wiphy_name(priv->hw->wiphy), priv->tx_urb,
1735                                priv->tx_urb->hcpriv, priv->tx_urb->complete);
1736         }
1737
1738         return 0;
1739 }
1740
1741 static int at76_mac80211_start(struct ieee80211_hw *hw)
1742 {
1743         struct at76_priv *priv = hw->priv;
1744         int ret;
1745
1746         at76_dbg(DBG_MAC80211, "%s()", __func__);
1747
1748         mutex_lock(&priv->mtx);
1749
1750         ret = at76_submit_rx_urb(priv);
1751         if (ret < 0) {
1752                 printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
1753                        wiphy_name(priv->hw->wiphy), ret);
1754                 goto error;
1755         }
1756
1757         at76_startup_device(priv);
1758
1759         at76_start_monitor(priv);
1760
1761 error:
1762         mutex_unlock(&priv->mtx);
1763
1764         return 0;
1765 }
1766
1767 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1768 {
1769         struct at76_priv *priv = hw->priv;
1770
1771         at76_dbg(DBG_MAC80211, "%s()", __func__);
1772
1773         cancel_delayed_work(&priv->dwork_hw_scan);
1774         cancel_work_sync(&priv->work_set_promisc);
1775
1776         mutex_lock(&priv->mtx);
1777
1778         if (!priv->device_unplugged) {
1779                 /* We are called by "ifconfig ethX down", not because the
1780                  * device is not available anymore. */
1781                 at76_set_radio(priv, 0);
1782
1783                 /* We unlink rx_urb because at76_open() re-submits it.
1784                  * If unplugged, at76_delete_device() takes care of it. */
1785                 usb_kill_urb(priv->rx_urb);
1786         }
1787
1788         mutex_unlock(&priv->mtx);
1789 }
1790
1791 static int at76_add_interface(struct ieee80211_hw *hw,
1792                               struct ieee80211_vif *vif)
1793 {
1794         struct at76_priv *priv = hw->priv;
1795         int ret = 0;
1796
1797         at76_dbg(DBG_MAC80211, "%s()", __func__);
1798
1799         mutex_lock(&priv->mtx);
1800
1801         switch (vif->type) {
1802         case NL80211_IFTYPE_STATION:
1803                 priv->iw_mode = IW_MODE_INFRA;
1804                 break;
1805         default:
1806                 ret = -EOPNOTSUPP;
1807                 goto exit;
1808         }
1809
1810 exit:
1811         mutex_unlock(&priv->mtx);
1812
1813         return ret;
1814 }
1815
1816 static void at76_remove_interface(struct ieee80211_hw *hw,
1817                                   struct ieee80211_vif *vif)
1818 {
1819         at76_dbg(DBG_MAC80211, "%s()", __func__);
1820 }
1821
1822 static int at76_join(struct at76_priv *priv)
1823 {
1824         struct at76_req_join join;
1825         int ret;
1826
1827         memset(&join, 0, sizeof(struct at76_req_join));
1828         memcpy(join.essid, priv->essid, priv->essid_size);
1829         join.essid_size = priv->essid_size;
1830         memcpy(join.bssid, priv->bssid, ETH_ALEN);
1831         join.bss_type = INFRASTRUCTURE_MODE;
1832         join.channel = priv->channel;
1833         join.timeout = cpu_to_le16(2000);
1834
1835         at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1836         ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1837                                     sizeof(struct at76_req_join));
1838
1839         if (ret < 0) {
1840                 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
1841                        wiphy_name(priv->hw->wiphy), ret);
1842                 return 0;
1843         }
1844
1845         ret = at76_wait_completion(priv, CMD_JOIN);
1846         at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1847         if (ret != CMD_STATUS_COMPLETE) {
1848                 printk(KERN_ERR "%s: at76_wait_completion failed: %d\n",
1849                        wiphy_name(priv->hw->wiphy), ret);
1850                 return 0;
1851         }
1852
1853         at76_set_pm_mode(priv);
1854
1855         return 0;
1856 }
1857
1858 static void at76_dwork_hw_scan(struct work_struct *work)
1859 {
1860         struct at76_priv *priv = container_of(work, struct at76_priv,
1861                                               dwork_hw_scan.work);
1862         int ret;
1863
1864         if (priv->device_unplugged)
1865                 return;
1866
1867         mutex_lock(&priv->mtx);
1868
1869         ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1870         at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1871
1872         /* FIXME: add maximum time for scan to complete */
1873
1874         if (ret != CMD_STATUS_COMPLETE) {
1875                 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1876                                              SCAN_POLL_INTERVAL);
1877                 mutex_unlock(&priv->mtx);
1878                 return;
1879         }
1880
1881         if (is_valid_ether_addr(priv->bssid))
1882                 at76_join(priv);
1883
1884         mutex_unlock(&priv->mtx);
1885
1886         ieee80211_scan_completed(priv->hw, false);
1887
1888         ieee80211_wake_queues(priv->hw);
1889 }
1890
1891 static int at76_hw_scan(struct ieee80211_hw *hw,
1892                         struct cfg80211_scan_request *req)
1893 {
1894         struct at76_priv *priv = hw->priv;
1895         struct at76_req_scan scan;
1896         u8 *ssid = NULL;
1897         int ret, len = 0;
1898
1899         at76_dbg(DBG_MAC80211, "%s():", __func__);
1900
1901         if (priv->device_unplugged)
1902                 return 0;
1903
1904         mutex_lock(&priv->mtx);
1905
1906         ieee80211_stop_queues(hw);
1907
1908         memset(&scan, 0, sizeof(struct at76_req_scan));
1909         memset(scan.bssid, 0xFF, ETH_ALEN);
1910
1911         if (req->n_ssids) {
1912                 scan.scan_type = SCAN_TYPE_ACTIVE;
1913                 ssid = req->ssids[0].ssid;
1914                 len = req->ssids[0].ssid_len;
1915         } else {
1916                 scan.scan_type = SCAN_TYPE_PASSIVE;
1917         }
1918
1919         if (len) {
1920                 memcpy(scan.essid, ssid, len);
1921                 scan.essid_size = len;
1922         }
1923
1924         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1925         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1926         scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1927         scan.international_scan = 0;
1928
1929         at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1930         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1931
1932         if (ret < 0) {
1933                 err("CMD_SCAN failed: %d", ret);
1934                 goto exit;
1935         }
1936
1937         ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1938                                      SCAN_POLL_INTERVAL);
1939
1940 exit:
1941         mutex_unlock(&priv->mtx);
1942
1943         return 0;
1944 }
1945
1946 static int at76_config(struct ieee80211_hw *hw, u32 changed)
1947 {
1948         struct at76_priv *priv = hw->priv;
1949
1950         at76_dbg(DBG_MAC80211, "%s(): channel %d",
1951                  __func__, hw->conf.channel->hw_value);
1952         at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1953
1954         mutex_lock(&priv->mtx);
1955
1956         priv->channel = hw->conf.channel->hw_value;
1957
1958         if (is_valid_ether_addr(priv->bssid))
1959                 at76_join(priv);
1960         else
1961                 at76_start_monitor(priv);
1962
1963         mutex_unlock(&priv->mtx);
1964
1965         return 0;
1966 }
1967
1968 static void at76_bss_info_changed(struct ieee80211_hw *hw,
1969                                   struct ieee80211_vif *vif,
1970                                   struct ieee80211_bss_conf *conf,
1971                                   u32 changed)
1972 {
1973         struct at76_priv *priv = hw->priv;
1974
1975         at76_dbg(DBG_MAC80211, "%s():", __func__);
1976
1977         if (!(changed & BSS_CHANGED_BSSID))
1978                 return;
1979
1980         at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
1981
1982         mutex_lock(&priv->mtx);
1983
1984         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1985
1986         if (is_valid_ether_addr(priv->bssid))
1987                 /* mac80211 is joining a bss */
1988                 at76_join(priv);
1989
1990         mutex_unlock(&priv->mtx);
1991 }
1992
1993 /* must be atomic */
1994 static void at76_configure_filter(struct ieee80211_hw *hw,
1995                                   unsigned int changed_flags,
1996                                   unsigned int *total_flags, u64 multicast)
1997 {
1998         struct at76_priv *priv = hw->priv;
1999         int flags;
2000
2001         at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2002                  "total_flags=0x%08x",
2003                  __func__, changed_flags, *total_flags);
2004
2005         flags = changed_flags & AT76_SUPPORTED_FILTERS;
2006         *total_flags = AT76_SUPPORTED_FILTERS;
2007
2008         /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2009         if (priv->device_unplugged)
2010                 return;
2011
2012         /* FIXME: access to priv->promisc should be protected with
2013          * priv->mtx, but it's impossible because this function needs to be
2014          * atomic */
2015
2016         if (flags && !priv->promisc) {
2017                 /* mac80211 wants us to enable promiscuous mode */
2018                 priv->promisc = 1;
2019         } else if (!flags && priv->promisc) {
2020                 /* we need to disable promiscuous mode */
2021                 priv->promisc = 0;
2022         } else
2023                 return;
2024
2025         ieee80211_queue_work(hw, &priv->work_set_promisc);
2026 }
2027
2028 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2029                         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2030                         struct ieee80211_key_conf *key)
2031 {
2032         struct at76_priv *priv = hw->priv;
2033
2034         int i;
2035
2036         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d "
2037                  "key->keylen %d",
2038                  __func__, cmd, key->alg, key->keyidx, key->keylen);
2039
2040         if (key->alg != ALG_WEP)
2041                 return -EOPNOTSUPP;
2042
2043         key->hw_key_idx = key->keyidx;
2044
2045         mutex_lock(&priv->mtx);
2046
2047         switch (cmd) {
2048         case SET_KEY:
2049                 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2050                 priv->wep_keys_len[key->keyidx] = key->keylen;
2051
2052                 /* FIXME: find out how to do this properly */
2053                 priv->wep_key_id = key->keyidx;
2054
2055                 break;
2056         case DISABLE_KEY:
2057         default:
2058                 priv->wep_keys_len[key->keyidx] = 0;
2059                 break;
2060         }
2061
2062         priv->wep_enabled = 0;
2063
2064         for (i = 0; i < WEP_KEYS; i++) {
2065                 if (priv->wep_keys_len[i] != 0)
2066                         priv->wep_enabled = 1;
2067         }
2068
2069         at76_startup_device(priv);
2070
2071         mutex_unlock(&priv->mtx);
2072
2073         return 0;
2074 }
2075
2076 static const struct ieee80211_ops at76_ops = {
2077         .tx = at76_mac80211_tx,
2078         .add_interface = at76_add_interface,
2079         .remove_interface = at76_remove_interface,
2080         .config = at76_config,
2081         .bss_info_changed = at76_bss_info_changed,
2082         .configure_filter = at76_configure_filter,
2083         .start = at76_mac80211_start,
2084         .stop = at76_mac80211_stop,
2085         .hw_scan = at76_hw_scan,
2086         .set_key = at76_set_key,
2087 };
2088
2089 /* Allocate network device and initialize private data */
2090 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2091 {
2092         struct ieee80211_hw *hw;
2093         struct at76_priv *priv;
2094
2095         hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2096         if (!hw) {
2097                 printk(KERN_ERR DRIVER_NAME ": could not register"
2098                        " ieee80211_hw\n");
2099                 return NULL;
2100         }
2101
2102         priv = hw->priv;
2103         priv->hw = hw;
2104
2105         priv->udev = udev;
2106
2107         mutex_init(&priv->mtx);
2108         INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2109         INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2110         INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2111
2112         tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2113
2114         priv->pm_mode = AT76_PM_OFF;
2115         priv->pm_period = 0;
2116
2117         /* unit us */
2118         priv->hw->channel_change_time = 100000;
2119
2120         return priv;
2121 }
2122
2123 static int at76_alloc_urbs(struct at76_priv *priv,
2124                            struct usb_interface *interface)
2125 {
2126         struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2127         int i;
2128         int buffer_size;
2129         struct usb_host_interface *iface_desc;
2130
2131         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2132
2133         at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2134                  interface->altsetting[0].desc.bNumEndpoints);
2135
2136         ep_in = NULL;
2137         ep_out = NULL;
2138         iface_desc = interface->cur_altsetting;
2139         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2140                 endpoint = &iface_desc->endpoint[i].desc;
2141
2142                 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2143                          __func__, i, endpoint->bEndpointAddress,
2144                          endpoint->bmAttributes);
2145
2146                 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2147                         ep_in = endpoint;
2148
2149                 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2150                         ep_out = endpoint;
2151         }
2152
2153         if (!ep_in || !ep_out) {
2154                 dev_printk(KERN_ERR, &interface->dev,
2155                            "bulk endpoints missing\n");
2156                 return -ENXIO;
2157         }
2158
2159         priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2160         priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2161
2162         priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2163         priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2164         if (!priv->rx_urb || !priv->tx_urb) {
2165                 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2166                 return -ENOMEM;
2167         }
2168
2169         buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2170         priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2171         if (!priv->bulk_out_buffer) {
2172                 dev_printk(KERN_ERR, &interface->dev,
2173                            "cannot allocate output buffer\n");
2174                 return -ENOMEM;
2175         }
2176
2177         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2178
2179         return 0;
2180 }
2181
2182 static struct ieee80211_rate at76_rates[] = {
2183         { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2184         { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2185         { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2186         { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2187 };
2188
2189 static struct ieee80211_channel at76_channels[] = {
2190         { .center_freq = 2412, .hw_value = 1 },
2191         { .center_freq = 2417, .hw_value = 2 },
2192         { .center_freq = 2422, .hw_value = 3 },
2193         { .center_freq = 2427, .hw_value = 4 },
2194         { .center_freq = 2432, .hw_value = 5 },
2195         { .center_freq = 2437, .hw_value = 6 },
2196         { .center_freq = 2442, .hw_value = 7 },
2197         { .center_freq = 2447, .hw_value = 8 },
2198         { .center_freq = 2452, .hw_value = 9 },
2199         { .center_freq = 2457, .hw_value = 10 },
2200         { .center_freq = 2462, .hw_value = 11 },
2201         { .center_freq = 2467, .hw_value = 12 },
2202         { .center_freq = 2472, .hw_value = 13 },
2203         { .center_freq = 2484, .hw_value = 14 }
2204 };
2205
2206 static struct ieee80211_supported_band at76_supported_band = {
2207         .channels = at76_channels,
2208         .n_channels = ARRAY_SIZE(at76_channels),
2209         .bitrates = at76_rates,
2210         .n_bitrates = ARRAY_SIZE(at76_rates),
2211 };
2212
2213 /* Register network device and initialize the hardware */
2214 static int at76_init_new_device(struct at76_priv *priv,
2215                                 struct usb_interface *interface)
2216 {
2217         struct wiphy *wiphy;
2218         size_t len;
2219         int ret;
2220
2221         /* set up the endpoint information */
2222         /* check out the endpoints */
2223
2224         at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2225                  interface->cur_altsetting->desc.bNumEndpoints);
2226
2227         ret = at76_alloc_urbs(priv, interface);
2228         if (ret < 0)
2229                 goto exit;
2230
2231         /* MAC address */
2232         ret = at76_get_hw_config(priv);
2233         if (ret < 0) {
2234                 dev_printk(KERN_ERR, &interface->dev,
2235                            "cannot get MAC address\n");
2236                 goto exit;
2237         }
2238
2239         priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2240
2241         priv->channel = DEF_CHANNEL;
2242         priv->iw_mode = IW_MODE_INFRA;
2243         priv->rts_threshold = DEF_RTS_THRESHOLD;
2244         priv->frag_threshold = DEF_FRAG_THRESHOLD;
2245         priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2246         priv->txrate = TX_RATE_AUTO;
2247         priv->preamble_type = PREAMBLE_TYPE_LONG;
2248         priv->beacon_period = 100;
2249         priv->auth_mode = WLAN_AUTH_OPEN;
2250         priv->scan_min_time = DEF_SCAN_MIN_TIME;
2251         priv->scan_max_time = DEF_SCAN_MAX_TIME;
2252         priv->scan_mode = SCAN_TYPE_ACTIVE;
2253         priv->device_unplugged = 0;
2254
2255         /* mac80211 initialisation */
2256         wiphy = priv->hw->wiphy;
2257         priv->hw->wiphy->max_scan_ssids = 1;
2258         priv->hw->wiphy->max_scan_ie_len = 0;
2259         priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2260         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2261         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2262                           IEEE80211_HW_SIGNAL_UNSPEC;
2263         priv->hw->max_signal = 100;
2264
2265         SET_IEEE80211_DEV(priv->hw, &interface->dev);
2266         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2267
2268         len = sizeof(wiphy->fw_version);
2269         snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2270                  priv->fw_version.major, priv->fw_version.minor,
2271                  priv->fw_version.patch, priv->fw_version.build);
2272
2273         wiphy->hw_version = priv->board_type;
2274
2275         ret = ieee80211_register_hw(priv->hw);
2276         if (ret) {
2277                 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2278                        ret);
2279                 goto exit;
2280         }
2281
2282         priv->mac80211_registered = 1;
2283
2284         printk(KERN_INFO "%s: USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2285                wiphy_name(priv->hw->wiphy),
2286                dev_name(&interface->dev), priv->mac_addr,
2287                priv->fw_version.major, priv->fw_version.minor,
2288                priv->fw_version.patch, priv->fw_version.build);
2289         printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n",
2290                wiphy_name(priv->hw->wiphy),
2291                priv->regulatory_domain, priv->domain->name);
2292
2293 exit:
2294         return ret;
2295 }
2296
2297 static void at76_delete_device(struct at76_priv *priv)
2298 {
2299         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2300
2301         /* The device is gone, don't bother turning it off */
2302         priv->device_unplugged = 1;
2303
2304         tasklet_kill(&priv->rx_tasklet);
2305
2306         if (priv->mac80211_registered)
2307                 ieee80211_unregister_hw(priv->hw);
2308
2309         if (priv->tx_urb) {
2310                 usb_kill_urb(priv->tx_urb);
2311                 usb_free_urb(priv->tx_urb);
2312         }
2313         if (priv->rx_urb) {
2314                 usb_kill_urb(priv->rx_urb);
2315                 usb_free_urb(priv->rx_urb);
2316         }
2317
2318         at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2319
2320         kfree(priv->bulk_out_buffer);
2321
2322         del_timer_sync(&ledtrig_tx_timer);
2323
2324         kfree_skb(priv->rx_skb);
2325
2326         usb_put_dev(priv->udev);
2327
2328         at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2329                  __func__);
2330         ieee80211_free_hw(priv->hw);
2331
2332         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2333 }
2334
2335 static int at76_probe(struct usb_interface *interface,
2336                       const struct usb_device_id *id)
2337 {
2338         int ret;
2339         struct at76_priv *priv;
2340         struct fwentry *fwe;
2341         struct usb_device *udev;
2342         int op_mode;
2343         int need_ext_fw = 0;
2344         struct mib_fw_version fwv;
2345         int board_type = (int)id->driver_info;
2346
2347         udev = usb_get_dev(interface_to_usbdev(interface));
2348
2349         /* Load firmware into kernel memory */
2350         fwe = at76_load_firmware(udev, board_type);
2351         if (!fwe) {
2352                 ret = -ENOENT;
2353                 goto error;
2354         }
2355
2356         op_mode = at76_get_op_mode(udev);
2357
2358         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2359
2360         /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2361            we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2362
2363         if (op_mode == OPMODE_HW_CONFIG_MODE) {
2364                 dev_printk(KERN_ERR, &interface->dev,
2365                            "cannot handle a device in HW_CONFIG_MODE\n");
2366                 ret = -EBUSY;
2367                 goto error;
2368         }
2369
2370         if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2371             && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2372                 /* download internal firmware part */
2373                 dev_printk(KERN_DEBUG, &interface->dev,
2374                            "downloading internal firmware\n");
2375                 ret = at76_load_internal_fw(udev, fwe);
2376                 if (ret < 0) {
2377                         dev_printk(KERN_ERR, &interface->dev,
2378                                    "error %d downloading internal firmware\n",
2379                                    ret);
2380                         goto error;
2381                 }
2382                 usb_put_dev(udev);
2383                 return ret;
2384         }
2385
2386         /* Internal firmware already inside the device.  Get firmware
2387          * version to test if external firmware is loaded.
2388          * This works only for newer firmware, e.g. the Intersil 0.90.x
2389          * says "control timeout on ep0in" and subsequent
2390          * at76_get_op_mode() fail too :-( */
2391
2392         /* if version >= 0.100.x.y or device with built-in flash we can
2393          * query the device for the fw version */
2394         if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2395             || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2396                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2397                 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2398                         need_ext_fw = 1;
2399         } else
2400                 /* No way to check firmware version, reload to be sure */
2401                 need_ext_fw = 1;
2402
2403         if (need_ext_fw) {
2404                 dev_printk(KERN_DEBUG, &interface->dev,
2405                            "downloading external firmware\n");
2406
2407                 ret = at76_load_external_fw(udev, fwe);
2408                 if (ret)
2409                         goto error;
2410
2411                 /* Re-check firmware version */
2412                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2413                 if (ret < 0) {
2414                         dev_printk(KERN_ERR, &interface->dev,
2415                                    "error %d getting firmware version\n", ret);
2416                         goto error;
2417                 }
2418         }
2419
2420         priv = at76_alloc_new_device(udev);
2421         if (!priv) {
2422                 ret = -ENOMEM;
2423                 goto error;
2424         }
2425
2426         usb_set_intfdata(interface, priv);
2427
2428         memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2429         priv->board_type = board_type;
2430
2431         ret = at76_init_new_device(priv, interface);
2432         if (ret < 0)
2433                 at76_delete_device(priv);
2434
2435         return ret;
2436
2437 error:
2438         usb_put_dev(udev);
2439         return ret;
2440 }
2441
2442 static void at76_disconnect(struct usb_interface *interface)
2443 {
2444         struct at76_priv *priv;
2445
2446         priv = usb_get_intfdata(interface);
2447         usb_set_intfdata(interface, NULL);
2448
2449         /* Disconnect after loading internal firmware */
2450         if (!priv)
2451                 return;
2452
2453         printk(KERN_INFO "%s: disconnecting\n", wiphy_name(priv->hw->wiphy));
2454         at76_delete_device(priv);
2455         dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2456 }
2457
2458 /* Structure for registering this driver with the USB subsystem */
2459 static struct usb_driver at76_driver = {
2460         .name = DRIVER_NAME,
2461         .probe = at76_probe,
2462         .disconnect = at76_disconnect,
2463         .id_table = dev_table,
2464 };
2465
2466 static int __init at76_mod_init(void)
2467 {
2468         int result;
2469
2470         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2471
2472         mutex_init(&fw_mutex);
2473
2474         /* register this driver with the USB subsystem */
2475         result = usb_register(&at76_driver);
2476         if (result < 0)
2477                 printk(KERN_ERR DRIVER_NAME
2478                        ": usb_register failed (status %d)\n", result);
2479
2480         led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2481         return result;
2482 }
2483
2484 static void __exit at76_mod_exit(void)
2485 {
2486         int i;
2487
2488         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2489         usb_deregister(&at76_driver);
2490         for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2491                 if (firmwares[i].fw)
2492                         release_firmware(firmwares[i].fw);
2493         }
2494         led_trigger_unregister_simple(ledtrig_tx);
2495 }
2496
2497 module_param_named(debug, at76_debug, uint, 0600);
2498 MODULE_PARM_DESC(debug, "Debugging level");
2499
2500 module_init(at76_mod_init);
2501 module_exit(at76_mod_exit);
2502
2503 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2504 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2505 MODULE_AUTHOR("Alex <alex@foogod.com>");
2506 MODULE_AUTHOR("Nick Jones");
2507 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2508 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2509 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2510 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2511 MODULE_DESCRIPTION(DRIVER_DESC);
2512 MODULE_LICENSE("GPL");