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 <[email protected]>
   6  * Copyright (c) 2004 Nick Jones
   7  * Copyright (c) 2004 Balint Seeber <[email protected]>
   8  * Copyright (c) 2007 Guido Guenther <[email protected]>
   9  * Copyright (c) 2007 Kalle Valo <[email protected]>
  10  * Copyright (c) 2010 Sebastian Smolorz <[email protected]>
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This file is part of the Berlios driver for WLAN USB devices based on the
  18  * Atmel AT76C503A/505/505A.
  19  *
  20  * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
  21  *
  22  * TODO list is at the wiki:
  23  *
  24  * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
  25  *
  26  */
  27
  28 #include <linux/init.h>
  29 #include <linux/kernel.h>
  30 #include <linux/sched.h>
  31 #include <linux/errno.h>
  32 #include <linux/slab.h>
  33 #include <linux/module.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/list.h>
  36 #include <linux/usb.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/if_arp.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/ethtool.h>
  41 #include <linux/wireless.h>
  42 #include <net/iw_handler.h>
  43 #include <net/ieee80211_radiotap.h>
  44 #include <linux/firmware.h>
  45 #include <linux/leds.h>
  46 #include <net/mac80211.h>
  47
  48 #include "at76c50x-usb.h"
  49
  50 /* Version information */
  51 #define DRIVER_NAME "at76c50x-usb"
  52 #define DRIVER_VERSION  "0.17"
  53 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
  54
  55 /* at76_debug bits */
  56 #define DBG_PROGRESS            0x00000001      /* authentication/accociation */
  57 #define DBG_BSS_TABLE           0x00000002      /* show BSS table after scans */
  58 #define DBG_IOCTL               0x00000004      /* ioctl calls / settings */
  59 #define DBG_MAC_STATE           0x00000008      /* MAC state transitions */
  60 #define DBG_TX_DATA             0x00000010      /* tx header */
  61 #define DBG_TX_DATA_CONTENT     0x00000020      /* tx content */
  62 #define DBG_TX_MGMT             0x00000040      /* tx management */
  63 #define DBG_RX_DATA             0x00000080      /* rx data header */
  64 #define DBG_RX_DATA_CONTENT     0x00000100      /* rx data content */
  65 #define DBG_RX_MGMT             0x00000200      /* rx mgmt frame headers */
  66 #define DBG_RX_BEACON           0x00000400      /* rx beacon */
  67 #define DBG_RX_CTRL             0x00000800      /* rx control */
  68 #define DBG_RX_MGMT_CONTENT     0x00001000      /* rx mgmt content */
  69 #define DBG_RX_FRAGS            0x00002000      /* rx data fragment handling */
  70 #define DBG_DEVSTART            0x00004000      /* fw download, device start */
  71 #define DBG_URB                 0x00008000      /* rx urb status, ... */
  72 #define DBG_RX_ATMEL_HDR        0x00010000      /* Atmel-specific Rx headers */
  73 #define DBG_PROC_ENTRY          0x00020000      /* procedure entries/exits */
  74 #define DBG_PM                  0x00040000      /* power management settings */
  75 #define DBG_BSS_MATCH           0x00080000      /* BSS match failures */
  76 #define DBG_PARAMS              0x00100000      /* show configured parameters */
  77 #define DBG_WAIT_COMPLETE       0x00200000      /* command completion */
  78 #define DBG_RX_FRAGS_SKB        0x00400000      /* skb header of Rx fragments */
  79 #define DBG_BSS_TABLE_RM        0x00800000      /* purging bss table entries */
  80 #define DBG_MONITOR_MODE        0x01000000      /* monitor mode */
  81 #define DBG_MIB                 0x02000000      /* dump all MIBs on startup */
  82 #define DBG_MGMT_TIMER          0x04000000      /* dump mgmt_timer ops */
  83 #define DBG_WE_EVENTS           0x08000000      /* dump wireless events */
  84 #define DBG_FW                  0x10000000      /* firmware download */
  85 #define DBG_DFU                 0x20000000      /* device firmware upgrade */
  86 #define DBG_CMD                 0x40000000
  87 #define DBG_MAC80211            0x80000000
  88
  89 #define DBG_DEFAULTS            0
  90
  91 /* Use our own dbg macro */
  92 #define at76_dbg(bits, format, arg...)                                  \
  93 do {                                                                    \
  94         if (at76_debug & (bits))                                        \
  95                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
  96 } while (0)
  97
  98 #define at76_dbg_dump(bits, buf, len, format, arg...)                   \
  99 do {                                                                    \
 100         if (at76_debug & (bits)) {                                      \
 101                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
 102                 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
 103         }                                                               \
 104 } while (0)
 105
 106 static uint at76_debug = DBG_DEFAULTS;
 107
 108 /* Protect against concurrent firmware loading and parsing */
 109 static struct mutex fw_mutex;
 110
 111 static struct fwentry firmwares[] = {
 112         [0] = { "" },
 113         [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
 114         [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
 115         [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
 116         [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
 117         [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
 118         [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
 119         [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
 120         [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
 121 };
 122 MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
 123 MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
 124 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
 125 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
 126 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
 127 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
 128 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
 129 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
 130
 131 #define USB_DEVICE_DATA(__ops)  .driver_info = (kernel_ulong_t)(__ops)
 132
 133 static struct usb_device_id dev_table[] = {
 134         /*
 135          * at76c503-i3861
 136          */
 137         /* Generic AT76C503/3861 device */
 138         { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 139         /* Linksys WUSB11 v2.1/v2.6 */
 140         { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 141         /* Netgear MA101 rev. A */
 142         { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 143         /* Tekram U300C / Allnet ALL0193 */
 144         { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 145         /* HP HN210W J7801A */
 146         { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 147         /* Sitecom/Z-Com/Zyxel M4Y-750 */
 148         { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 149         /* Dynalink/Askey WLL013 (intersil) */
 150         { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 151         /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
 152         { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 153         /* BenQ AWL300 */
 154         { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 155         /* Addtron AWU-120, Compex WLU11 */
 156         { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 157         /* Intel AP310 AnyPoint II USB */
 158         { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 159         /* Dynalink L11U */
 160         { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 161         /* Arescom WL-210, FCC id 07J-GL2411USB */
 162         { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 163         /* I-O DATA WN-B11/USB */
 164         { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 165         /* BT Voyager 1010 */
 166         { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 167         /*
 168          * at76c503-i3863
 169          */
 170         /* Generic AT76C503/3863 device */
 171         { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 172         /* Samsung SWL-2100U */
 173         { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 174         /*
 175          * at76c503-rfmd
 176          */
 177         /* Generic AT76C503/RFMD device */
 178         { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 179         /* Dynalink/Askey WLL013 (rfmd) */
 180         { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
 181         /* Linksys WUSB11 v2.6 */
 182         { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
 183         /* Network Everywhere NWU11B */
 184         { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
 185         /* Netgear MA101 rev. B */
 186         { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 187         /* D-Link DWL-120 rev. E */
 188         { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
 189         /* Actiontec 802UAT1, HWU01150-01UK */
 190         { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 191         /* AirVast W-Buddie WN210 */
 192         { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 193         /* Dick Smith Electronics XH1153 802.11b USB adapter */
 194         { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
 195         /* CNet CNUSB611 */
 196         { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
 197         /* FiberLine FL-WL200U */
 198         { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
 199         /* BenQ AWL400 USB stick */
 200         { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
 201         /* 3Com 3CRSHEW696 */
 202         { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
 203         /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
 204         { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
 205         /* Belkin F5D6050, version 2 */
 206         { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
 207         /* iBlitzz, BWU613 (not *B or *SB) */
 208         { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
 209         /* Gigabyte GN-WLBM101 */
 210         { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
 211         /* Planex GW-US11S */
 212         { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
 213         /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
 214         { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
 215         /* Corega Wireless LAN USB-11 mini */
 216         { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
 217         /* Corega Wireless LAN USB-11 mini2 */
 218         { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
 219         /* Uniden PCW100 */
 220         { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
 221         /*
 222          * at76c503-rfmd-acc
 223          */
 224         /* SMC2664W */
 225         { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
 226         /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
 227         { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
 228         /*
 229          * at76c505-rfmd
 230          */
 231         /* Generic AT76C505/RFMD */
 232         { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
 233         /*
 234          * at76c505-rfmd2958
 235          */
 236         /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
 237         { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 238         /* Fiberline FL-WL240U */
 239         { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
 240         /* CNet CNUSB-611G */
 241         { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
 242         /* Linksys WUSB11 v2.8 */
 243         { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
 244         /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
 245         { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
 246         /* Corega WLAN USB Stick 11 */
 247         { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 248         /* Microstar MSI Box MS6978 */
 249         { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
 250         /*
 251          * at76c505a-rfmd2958
 252          */
 253         /* Generic AT76C505A device */
 254         { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
 255         /* Generic AT76C505AS device */
 256         { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
 257         /* Siemens Gigaset USB WLAN Adapter 11 */
 258         { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
 259         /* OQO Model 01+ Internal Wi-Fi */
 260         { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
 261         /*
 262          * at76c505amx-rfmd
 263          */
 264         /* Generic AT76C505AMX device */
 265         { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
 266         { }
 267 };
 268
 269 MODULE_DEVICE_TABLE(usb, dev_table);
 270
 271 /* Supported rates of this hardware, bit 7 marks basic rates */
 272 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
 273
 274 static const char *const preambles[] = { "long", "short", "auto" };
 275
 276 /* Firmware download */
 277 /* DFU states */
 278 #define STATE_IDLE                      0x00
 279 #define STATE_DETACH                    0x01
 280 #define STATE_DFU_IDLE                  0x02
 281 #define STATE_DFU_DOWNLOAD_SYNC         0x03
 282 #define STATE_DFU_DOWNLOAD_BUSY         0x04
 283 #define STATE_DFU_DOWNLOAD_IDLE         0x05
 284 #define STATE_DFU_MANIFEST_SYNC         0x06
 285 #define STATE_DFU_MANIFEST              0x07
 286 #define STATE_DFU_MANIFEST_WAIT_RESET   0x08
 287 #define STATE_DFU_UPLOAD_IDLE           0x09
 288 #define STATE_DFU_ERROR                 0x0a
 289
 290 /* DFU commands */
 291 #define DFU_DETACH                      0
 292 #define DFU_DNLOAD                      1
 293 #define DFU_UPLOAD                      2
 294 #define DFU_GETSTATUS                   3
 295 #define DFU_CLRSTATUS                   4
 296 #define DFU_GETSTATE                    5
 297 #define DFU_ABORT                       6
 298
 299 #define FW_BLOCK_SIZE 1024
 300
 301 struct dfu_status {
 302         unsigned char status;
 303         unsigned char poll_timeout[3];
 304         unsigned char state;
 305         unsigned char string;
 306 } __packed;
 307
 308 static inline int at76_is_intersil(enum board_type board)
 309 {
 310         return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
 311 }
 312
 313 static inline int at76_is_503rfmd(enum board_type board)
 314 {
 315         return (board == BOARD_503 || board == BOARD_503_ACC);
 316 }
 317
 318 static inline int at76_is_505a(enum board_type board)
 319 {
 320         return (board == BOARD_505A || board == BOARD_505AMX);
 321 }
 322
 323 /* Load a block of the first (internal) part of the firmware */
 324 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
 325                                   void *block, int size)
 326 {
 327         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
 328                                USB_TYPE_CLASS | USB_DIR_OUT |
 329                                USB_RECIP_INTERFACE, blockno, 0, block, size,
 330                                USB_CTRL_GET_TIMEOUT);
 331 }
 332
 333 static int at76_dfu_get_status(struct usb_device *udev,
 334                                struct dfu_status *status)
 335 {
 336         int ret;
 337
 338         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
 339                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 340                               0, 0, status, sizeof(struct dfu_status),
 341                               USB_CTRL_GET_TIMEOUT);
 342         return ret;
 343 }
 344
 345 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
 346 {
 347         int ret;
 348
 349         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
 350                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 351                               0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
 352         return ret;
 353 }
 354
 355 /* Convert timeout from the DFU status to jiffies */
 356 static inline unsigned long at76_get_timeout(struct dfu_status *s)
 357 {
 358         return msecs_to_jiffies((s->poll_timeout[2] << 16)
 359                                 | (s->poll_timeout[1] << 8)
 360                                 | (s->poll_timeout[0]));
 361 }
 362
 363 /* Load internal firmware from the buffer.  If manifest_sync_timeout > 0, use
 364  * its value in jiffies in the MANIFEST_SYNC state.  */
 365 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 366                                 int manifest_sync_timeout)
 367 {
 368         u8 *block;
 369         struct dfu_status dfu_stat_buf;
 370         int ret = 0;
 371         int need_dfu_state = 1;
 372         int is_done = 0;
 373         u8 dfu_state = 0;
 374         u32 dfu_timeout = 0;
 375         int bsize = 0;
 376         int blockno = 0;
 377
 378         at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
 379                  manifest_sync_timeout);
 380
 381         if (!size) {
 382                 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
 383                 return -EINVAL;
 384         }
 385
 386         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
 387         if (!block)
 388                 return -ENOMEM;
 389
 390         do {
 391                 if (need_dfu_state) {
 392                         ret = at76_dfu_get_state(udev, &dfu_state);
 393                         if (ret < 0) {
 394                                 dev_printk(KERN_ERR, &udev->dev,
 395                                            "cannot get DFU state: %d\n", ret);
 396                                 goto exit;
 397                         }
 398                         need_dfu_state = 0;
 399                 }
 400
 401                 switch (dfu_state) {
 402                 case STATE_DFU_DOWNLOAD_SYNC:
 403                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
 404                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 405                         if (ret >= 0) {
 406                                 dfu_state = dfu_stat_buf.state;
 407                                 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 408                                 need_dfu_state = 0;
 409                         } else
 410                                 dev_printk(KERN_ERR, &udev->dev,
 411                                            "at76_dfu_get_status returned %d\n",
 412                                            ret);
 413                         break;
 414
 415                 case STATE_DFU_DOWNLOAD_BUSY:
 416                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
 417                         need_dfu_state = 1;
 418
 419                         at76_dbg(DBG_DFU, "DFU: Resetting device");
 420                         schedule_timeout_interruptible(dfu_timeout);
 421                         break;
 422
 423                 case STATE_DFU_DOWNLOAD_IDLE:
 424                         at76_dbg(DBG_DFU, "DOWNLOAD...");
 425                         /* fall through */
 426                 case STATE_DFU_IDLE:
 427                         at76_dbg(DBG_DFU, "DFU IDLE");
 428
 429                         bsize = min_t(int, size, FW_BLOCK_SIZE);
 430                         memcpy(block, buf, bsize);
 431                         at76_dbg(DBG_DFU, "int fw, size left = %5d, "
 432                                  "bsize = %4d, blockno = %2d", size, bsize,
 433                                  blockno);
 434                         ret =
 435                             at76_load_int_fw_block(udev, blockno, block, bsize);
 436                         buf += bsize;
 437                         size -= bsize;
 438                         blockno++;
 439
 440                         if (ret != bsize)
 441                                 dev_printk(KERN_ERR, &udev->dev,
 442                                            "at76_load_int_fw_block "
 443                                            "returned %d\n", ret);
 444                         need_dfu_state = 1;
 445                         break;
 446
 447                 case STATE_DFU_MANIFEST_SYNC:
 448                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
 449
 450                         ret = at76_dfu_get_status(udev, &dfu_stat_buf);
 451                         if (ret < 0)
 452                                 break;
 453
 454                         dfu_state = dfu_stat_buf.state;
 455                         dfu_timeout = at76_get_timeout(&dfu_stat_buf);
 456                         need_dfu_state = 0;
 457
 458                         /* override the timeout from the status response,
 459                            needed for AT76C505A */
 460                         if (manifest_sync_timeout > 0)
 461                                 dfu_timeout = manifest_sync_timeout;
 462
 463                         at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
 464                         schedule_timeout_interruptible(dfu_timeout);
 465                         break;
 466
 467                 case STATE_DFU_MANIFEST:
 468                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
 469                         is_done = 1;
 470                         break;
 471
 472                 case STATE_DFU_MANIFEST_WAIT_RESET:
 473                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
 474                         is_done = 1;
 475                         break;
 476
 477                 case STATE_DFU_UPLOAD_IDLE:
 478                         at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
 479                         break;
 480
 481                 case STATE_DFU_ERROR:
 482                         at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
 483                         ret = -EPIPE;
 484                         break;
 485
 486                 default:
 487                         at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
 488                         ret = -EINVAL;
 489                         break;
 490                 }
 491         } while (!is_done && (ret >= 0));
 492
 493 exit:
 494         kfree(block);
 495         if (ret >= 0)
 496                 ret = 0;
 497
 498         return ret;
 499 }
 500
 501 #define HEX2STR_BUFFERS 4
 502 #define HEX2STR_MAX_LEN 64
 503 #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
 504
 505 /* Convert binary data into hex string */
 506 static char *hex2str(void *buf, int len)
 507 {
 508         static atomic_t a = ATOMIC_INIT(0);
 509         static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
 510         char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
 511         char *obuf = ret;
 512         u8 *ibuf = buf;
 513
 514         if (len > HEX2STR_MAX_LEN)
 515                 len = HEX2STR_MAX_LEN;
 516
 517         if (len <= 0) {
 518                 ret[0] = '\0';
 519                 return ret;
 520         }
 521
 522         while (len--) {
 523                 *obuf++ = BIN2HEX(*ibuf >> 4);
 524                 *obuf++ = BIN2HEX(*ibuf & 0xf);
 525                 *obuf++ = '-';
 526                 ibuf++;
 527         }
 528         *(--obuf) = '\0';
 529
 530         return ret;
 531 }
 532
 533 /* LED trigger */
 534 static int tx_activity;
 535 static void at76_ledtrig_tx_timerfunc(unsigned long data);
 536 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
 537 DEFINE_LED_TRIGGER(ledtrig_tx);
 538
 539 static void at76_ledtrig_tx_timerfunc(unsigned long data)
 540 {
 541         static int tx_lastactivity;
 542
 543         if (tx_lastactivity != tx_activity) {
 544                 tx_lastactivity = tx_activity;
 545                 led_trigger_event(ledtrig_tx, LED_FULL);
 546                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 547         } else
 548                 led_trigger_event(ledtrig_tx, LED_OFF);
 549 }
 550
 551 static void at76_ledtrig_tx_activity(void)
 552 {
 553         tx_activity++;
 554         if (!timer_pending(&ledtrig_tx_timer))
 555                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 556 }
 557
 558 static int at76_remap(struct usb_device *udev)
 559 {
 560         int ret;
 561         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
 562                               USB_TYPE_VENDOR | USB_DIR_OUT |
 563                               USB_RECIP_INTERFACE, 0, 0, NULL, 0,
 564                               USB_CTRL_GET_TIMEOUT);
 565         if (ret < 0)
 566                 return ret;
 567         return 0;
 568 }
 569
 570 static int at76_get_op_mode(struct usb_device *udev)
 571 {
 572         int ret;
 573         u8 saved;
 574         u8 *op_mode;
 575
 576         op_mode = kmalloc(1, GFP_NOIO);
 577         if (!op_mode)
 578                 return -ENOMEM;
 579         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 580                               USB_TYPE_VENDOR | USB_DIR_IN |
 581                               USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
 582                               USB_CTRL_GET_TIMEOUT);
 583         saved = *op_mode;
 584         kfree(op_mode);
 585
 586         if (ret < 0)
 587                 return ret;
 588         else if (ret < 1)
 589                 return -EIO;
 590         else
 591                 return saved;
 592 }
 593
 594 /* Load a block of the second ("external") part of the firmware */
 595 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
 596                                          void *block, int size)
 597 {
 598         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 599                                USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 600                                0x0802, blockno, block, size,
 601                                USB_CTRL_GET_TIMEOUT);
 602 }
 603
 604 static inline int at76_get_hw_cfg(struct usb_device *udev,
 605                                   union at76_hwcfg *buf, int buf_size)
 606 {
 607         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 608                                USB_TYPE_VENDOR | USB_DIR_IN |
 609                                USB_RECIP_INTERFACE, 0x0a02, 0,
 610                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 611 }
 612
 613 /* Intersil boards use a different "value" for GetHWConfig requests */
 614 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
 615                                            union at76_hwcfg *buf, int buf_size)
 616 {
 617         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 618                                USB_TYPE_VENDOR | USB_DIR_IN |
 619                                USB_RECIP_INTERFACE, 0x0902, 0,
 620                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 621 }
 622
 623 /* Get the hardware configuration for the adapter and put it to the appropriate
 624  * fields of 'priv' (the GetHWConfig request and interpretation of the result
 625  * depends on the board type) */
 626 static int at76_get_hw_config(struct at76_priv *priv)
 627 {
 628         int ret;
 629         union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
 630
 631         if (!hwcfg)
 632                 return -ENOMEM;
 633
 634         if (at76_is_intersil(priv->board_type)) {
 635                 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
 636                                                sizeof(hwcfg->i));
 637                 if (ret < 0)
 638                         goto exit;
 639                 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
 640                 priv->regulatory_domain = hwcfg->i.regulatory_domain;
 641         } else if (at76_is_503rfmd(priv->board_type)) {
 642                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
 643                 if (ret < 0)
 644                         goto exit;
 645                 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
 646                 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
 647         } else {
 648                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
 649                 if (ret < 0)
 650                         goto exit;
 651                 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
 652                 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
 653         }
 654
 655 exit:
 656         kfree(hwcfg);
 657         if (ret < 0)
 658                 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",
 659                           ret);
 660
 661         return ret;
 662 }
 663
 664 static struct reg_domain const *at76_get_reg_domain(u16 code)
 665 {
 666         int i;
 667         static struct reg_domain const fd_tab[] = {
 668                 { 0x10, "FCC (USA)", 0x7ff },   /* ch 1-11 */
 669                 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
 670                 { 0x30, "ETSI (most of Europe)", 0x1fff },      /* ch 1-13 */
 671                 { 0x31, "Spain", 0x600 },       /* ch 10-11 */
 672                 { 0x32, "France", 0x1e00 },     /* ch 10-13 */
 673                 { 0x40, "MKK (Japan)", 0x2000 },        /* ch 14 */
 674                 { 0x41, "MKK1 (Japan)", 0x3fff },       /* ch 1-14 */
 675                 { 0x50, "Israel", 0x3fc },      /* ch 3-9 */
 676                 { 0x00, "<unknown>", 0xffffffff }       /* ch 1-32 */
 677         };
 678
 679         /* Last entry is fallback for unknown domain code */
 680         for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
 681                 if (code == fd_tab[i].code)
 682                         break;
 683
 684         return &fd_tab[i];
 685 }
 686
 687 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
 688                                int buf_size)
 689 {
 690         int ret;
 691
 692         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 693                               USB_TYPE_VENDOR | USB_DIR_IN |
 694                               USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
 695                               USB_CTRL_GET_TIMEOUT);
 696         if (ret >= 0 && ret != buf_size)
 697                 return -EIO;
 698         return ret;
 699 }
 700
 701 /* Return positive number for status, negative for an error */
 702 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
 703 {
 704         u8 *stat_buf;
 705         int ret;
 706
 707         stat_buf = kmalloc(40, GFP_NOIO);
 708         if (!stat_buf)
 709                 return -ENOMEM;
 710
 711         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
 712                         USB_TYPE_VENDOR | USB_DIR_IN |
 713                         USB_RECIP_INTERFACE, cmd, 0, stat_buf,
 714                         40, USB_CTRL_GET_TIMEOUT);
 715         if (ret >= 0)
 716                 ret = stat_buf[5];
 717         kfree(stat_buf);
 718
 719         return ret;
 720 }
 721
 722 #define MAKE_CMD_CASE(c) case (c): return #c
 723 static const char *at76_get_cmd_string(u8 cmd_status)
 724 {
 725         switch (cmd_status) {
 726                 MAKE_CMD_CASE(CMD_SET_MIB);
 727                 MAKE_CMD_CASE(CMD_GET_MIB);
 728                 MAKE_CMD_CASE(CMD_SCAN);
 729                 MAKE_CMD_CASE(CMD_JOIN);
 730                 MAKE_CMD_CASE(CMD_START_IBSS);
 731                 MAKE_CMD_CASE(CMD_RADIO_ON);
 732                 MAKE_CMD_CASE(CMD_RADIO_OFF);
 733                 MAKE_CMD_CASE(CMD_STARTUP);
 734         }
 735
 736         return "UNKNOWN";
 737 }
 738
 739 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
 740                                  int buf_size)
 741 {
 742         int ret;
 743         struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
 744                                                buf_size, GFP_KERNEL);
 745
 746         if (!cmd_buf)
 747                 return -ENOMEM;
 748
 749         cmd_buf->cmd = cmd;
 750         cmd_buf->reserved = 0;
 751         cmd_buf->size = cpu_to_le16(buf_size);
 752         memcpy(cmd_buf->data, buf, buf_size);
 753
 754         at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
 755                       "issuing command %s (0x%02x)",
 756                       at76_get_cmd_string(cmd), cmd);
 757
 758         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 759                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 760                               0, 0, cmd_buf,
 761                               sizeof(struct at76_command) + buf_size,
 762                               USB_CTRL_GET_TIMEOUT);
 763         kfree(cmd_buf);
 764         return ret;
 765 }
 766
 767 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
 768 static const char *at76_get_cmd_status_string(u8 cmd_status)
 769 {
 770         switch (cmd_status) {
 771                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
 772                 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
 773                 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
 774                 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
 775                 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
 776                 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
 777                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
 778                 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
 779                 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
 780         }
 781
 782         return "UNKNOWN";
 783 }
 784
 785 /* Wait until the command is completed */
 786 static int at76_wait_completion(struct at76_priv *priv, int cmd)
 787 {
 788         int status = 0;
 789         unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
 790
 791         do {
 792                 status = at76_get_cmd_status(priv->udev, cmd);
 793                 if (status < 0) {
 794                         wiphy_err(priv->hw->wiphy,
 795                                   "at76_get_cmd_status failed: %d\n",
 796                                   status);
 797                         break;
 798                 }
 799
 800                 at76_dbg(DBG_WAIT_COMPLETE,
 801                          "%s: Waiting on cmd %d, status = %d (%s)",
 802                          wiphy_name(priv->hw->wiphy), cmd, status,
 803                          at76_get_cmd_status_string(status));
 804
 805                 if (status != CMD_STATUS_IN_PROGRESS
 806                     && status != CMD_STATUS_IDLE)
 807                         break;
 808
 809                 schedule_timeout_interruptible(HZ / 10);        /* 100 ms */
 810                 if (time_after(jiffies, timeout)) {
 811                         wiphy_err(priv->hw->wiphy,
 812                                   "completion timeout for command %d\n", cmd);
 813                         status = -ETIMEDOUT;
 814                         break;
 815                 }
 816         } while (1);
 817
 818         return status;
 819 }
 820
 821 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
 822 {
 823         int ret;
 824
 825         ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
 826                                     offsetof(struct set_mib_buffer,
 827                                              data) + buf->size);
 828         if (ret < 0)
 829                 return ret;
 830
 831         ret = at76_wait_completion(priv, CMD_SET_MIB);
 832         if (ret != CMD_STATUS_COMPLETE) {
 833                 wiphy_info(priv->hw->wiphy,
 834                            "set_mib: at76_wait_completion failed with %d\n",
 835                            ret);
 836                 ret = -EIO;
 837         }
 838
 839         return ret;
 840 }
 841
 842 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
 843 static int at76_set_radio(struct at76_priv *priv, int enable)
 844 {
 845         int ret;
 846         int cmd;
 847
 848         if (priv->radio_on == enable)
 849                 return 0;
 850
 851         cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
 852
 853         ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
 854         if (ret < 0)
 855                 wiphy_err(priv->hw->wiphy,
 856                           "at76_set_card_command(%d) failed: %d\n", cmd, ret);
 857         else
 858                 ret = 1;
 859
 860         priv->radio_on = enable;
 861         return ret;
 862 }
 863
 864 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
 865 static int at76_set_pm_mode(struct at76_priv *priv)
 866 {
 867         int ret = 0;
 868
 869         priv->mib_buf.type = MIB_MAC_MGMT;
 870         priv->mib_buf.size = 1;
 871         priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
 872         priv->mib_buf.data.byte = priv->pm_mode;
 873
 874         ret = at76_set_mib(priv, &priv->mib_buf);
 875         if (ret < 0)
 876                 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
 877                           ret);
 878
 879         return ret;
 880 }
 881
 882 static int at76_set_preamble(struct at76_priv *priv, u8 type)
 883 {
 884         int ret = 0;
 885
 886         priv->mib_buf.type = MIB_LOCAL;
 887         priv->mib_buf.size = 1;
 888         priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
 889         priv->mib_buf.data.byte = type;
 890
 891         ret = at76_set_mib(priv, &priv->mib_buf);
 892         if (ret < 0)
 893                 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
 894                           ret);
 895
 896         return ret;
 897 }
 898
 899 static int at76_set_frag(struct at76_priv *priv, u16 size)
 900 {
 901         int ret = 0;
 902
 903         priv->mib_buf.type = MIB_MAC;
 904         priv->mib_buf.size = 2;
 905         priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
 906         priv->mib_buf.data.word = cpu_to_le16(size);
 907
 908         ret = at76_set_mib(priv, &priv->mib_buf);
 909         if (ret < 0)
 910                 wiphy_err(priv->hw->wiphy,
 911                           "set_mib (frag threshold) failed: %d\n", ret);
 912
 913         return ret;
 914 }
 915
 916 static int at76_set_rts(struct at76_priv *priv, u16 size)
 917 {
 918         int ret = 0;
 919
 920         priv->mib_buf.type = MIB_MAC;
 921         priv->mib_buf.size = 2;
 922         priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
 923         priv->mib_buf.data.word = cpu_to_le16(size);
 924
 925         ret = at76_set_mib(priv, &priv->mib_buf);
 926         if (ret < 0)
 927                 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
 928
 929         return ret;
 930 }
 931
 932 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
 933 {
 934         int ret = 0;
 935
 936         priv->mib_buf.type = MIB_LOCAL;
 937         priv->mib_buf.size = 1;
 938         priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
 939         priv->mib_buf.data.byte = onoff;
 940
 941         ret = at76_set_mib(priv, &priv->mib_buf);
 942         if (ret < 0)
 943                 wiphy_err(priv->hw->wiphy,
 944                           "set_mib (autorate fallback) failed: %d\n", ret);
 945
 946         return ret;
 947 }
 948
 949 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
 950 {
 951         int i;
 952         int ret;
 953         struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
 954                                          GFP_KERNEL);
 955
 956         if (!m)
 957                 return;
 958
 959         ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
 960                            sizeof(struct mib_mac_addr));
 961         if (ret < 0) {
 962                 wiphy_err(priv->hw->wiphy,
 963                           "at76_get_mib (MAC_ADDR) failed: %d\n", ret);
 964                 goto exit;
 965         }
 966
 967         at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
 968                  wiphy_name(priv->hw->wiphy),
 969                  m->mac_addr, m->res[0], m->res[1]);
 970         for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
 971                 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
 972                          "status %d", wiphy_name(priv->hw->wiphy), i,
 973                          m->group_addr[i], m->group_addr_status[i]);
 974 exit:
 975         kfree(m);
 976 }
 977
 978 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
 979 {
 980         int i;
 981         int ret;
 982         int key_len;
 983         struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
 984
 985         if (!m)
 986                 return;
 987
 988         ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
 989                            sizeof(struct mib_mac_wep));
 990         if (ret < 0) {
 991                 wiphy_err(priv->hw->wiphy,
 992                           "at76_get_mib (MAC_WEP) failed: %d\n", ret);
 993                 goto exit;
 994         }
 995
 996         at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
 997                  "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
 998                  "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
 999                  m->privacy_invoked, m->wep_default_key_id,
1000                  m->wep_key_mapping_len, m->exclude_unencrypted,
1001                  le32_to_cpu(m->wep_icv_error_count),
1002                  le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1003                  m->wep_default_key_id);
1004
1005         key_len = (m->encryption_level == 1) ?
1006             WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1007
1008         for (i = 0; i < WEP_KEYS; i++)
1009                 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1010                          wiphy_name(priv->hw->wiphy), i,
1011                          hex2str(m->wep_default_keyvalue[i], key_len));
1012 exit:
1013         kfree(m);
1014 }
1015
1016 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1017 {
1018         int ret;
1019         struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1020                                          GFP_KERNEL);
1021
1022         if (!m)
1023                 return;
1024
1025         ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1026                            sizeof(struct mib_mac_mgmt));
1027         if (ret < 0) {
1028                 wiphy_err(priv->hw->wiphy,
1029                           "at76_get_mib (MAC_MGMT) failed: %d\n", ret);
1030                 goto exit;
1031         }
1032
1033         at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1034                  "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1035                  "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1036                  "current_bssid %pM current_essid %s current_bss_type %d "
1037                  "pm_mode %d ibss_change %d res %d "
1038                  "multi_domain_capability_implemented %d "
1039                  "international_roaming %d country_string %.3s",
1040                  wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1041                  le16_to_cpu(m->CFP_max_duration),
1042                  le16_to_cpu(m->medium_occupancy_limit),
1043                  le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1044                  m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1045                  m->CFP_period, m->current_bssid,
1046                  hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1047                  m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1048                  m->res, m->multi_domain_capability_implemented,
1049                  m->multi_domain_capability_enabled, m->country_string);
1050 exit:
1051         kfree(m);
1052 }
1053
1054 static void at76_dump_mib_mac(struct at76_priv *priv)
1055 {
1056         int ret;
1057         struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1058
1059         if (!m)
1060                 return;
1061
1062         ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1063         if (ret < 0) {
1064                 wiphy_err(priv->hw->wiphy,
1065                           "at76_get_mib (MAC) failed: %d\n", ret);
1066                 goto exit;
1067         }
1068
1069         at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1070                  "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1071                  "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1072                  "scan_type %d scan_channel %d probe_delay %u "
1073                  "min_channel_time %d max_channel_time %d listen_int %d "
1074                  "desired_ssid %s desired_bssid %pM desired_bsstype %d",
1075                  wiphy_name(priv->hw->wiphy),
1076                  le32_to_cpu(m->max_tx_msdu_lifetime),
1077                  le32_to_cpu(m->max_rx_lifetime),
1078                  le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1079                  le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1080                  m->short_retry_time, m->long_retry_time, m->scan_type,
1081                  m->scan_channel, le16_to_cpu(m->probe_delay),
1082                  le16_to_cpu(m->min_channel_time),
1083                  le16_to_cpu(m->max_channel_time),
1084                  le16_to_cpu(m->listen_interval),
1085                  hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1086                  m->desired_bssid, m->desired_bsstype);
1087 exit:
1088         kfree(m);
1089 }
1090
1091 static void at76_dump_mib_phy(struct at76_priv *priv)
1092 {
1093         int ret;
1094         struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1095
1096         if (!m)
1097                 return;
1098
1099         ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1100         if (ret < 0) {
1101                 wiphy_err(priv->hw->wiphy,
1102                           "at76_get_mib (PHY) failed: %d\n", ret);
1103                 goto exit;
1104         }
1105
1106         at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1107                  "sifs_time %d preamble_length %d plcp_header_length %d "
1108                  "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1109                  "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1110                  "phy_type %d current_reg_domain %d",
1111                  wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1112                  le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1113                  le16_to_cpu(m->preamble_length),
1114                  le16_to_cpu(m->plcp_header_length),
1115                  le16_to_cpu(m->mpdu_max_length),
1116                  le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1117                  m->operation_rate_set[1], m->operation_rate_set[2],
1118                  m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1119                  m->phy_type, m->current_reg_domain);
1120 exit:
1121         kfree(m);
1122 }
1123
1124 static void at76_dump_mib_local(struct at76_priv *priv)
1125 {
1126         int ret;
1127         struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1128
1129         if (!m)
1130                 return;
1131
1132         ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1133         if (ret < 0) {
1134                 wiphy_err(priv->hw->wiphy,
1135                           "at76_get_mib (LOCAL) failed: %d\n", ret);
1136                 goto exit;
1137         }
1138
1139         at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1140                  "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1141                  "preamble_type %d", wiphy_name(priv->hw->wiphy),
1142                  m->beacon_enable,
1143                  m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1144                  m->preamble_type);
1145 exit:
1146         kfree(m);
1147 }
1148
1149 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1150 {
1151         int ret;
1152         struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1153
1154         if (!m)
1155                 return;
1156
1157         ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1158                            sizeof(struct mib_mdomain));
1159         if (ret < 0) {
1160                 wiphy_err(priv->hw->wiphy,
1161                           "at76_get_mib (MDOMAIN) failed: %d\n", ret);
1162                 goto exit;
1163         }
1164
1165         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1166                  wiphy_name(priv->hw->wiphy),
1167                  hex2str(m->channel_list, sizeof(m->channel_list)));
1168
1169         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1170                  wiphy_name(priv->hw->wiphy),
1171                  hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1172 exit:
1173         kfree(m);
1174 }
1175
1176 /* Enable monitor mode */
1177 static int at76_start_monitor(struct at76_priv *priv)
1178 {
1179         struct at76_req_scan scan;
1180         int ret;
1181
1182         memset(&scan, 0, sizeof(struct at76_req_scan));
1183         memset(scan.bssid, 0xff, ETH_ALEN);
1184
1185         scan.channel = priv->channel;
1186         scan.scan_type = SCAN_TYPE_PASSIVE;
1187         scan.international_scan = 0;
1188         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1189         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1190         scan.probe_delay = cpu_to_le16(0);
1191
1192         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1193         if (ret >= 0)
1194                 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1195
1196         return ret;
1197 }
1198
1199 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1200    likely to compensate a flaw in the AT76C503A USB part ... */
1201 static inline int at76_calc_padding(int wlen)
1202 {
1203         /* add the USB TX header */
1204         wlen += AT76_TX_HDRLEN;
1205
1206         wlen = wlen % 64;
1207
1208         if (wlen < 50)
1209                 return 50 - wlen;
1210
1211         if (wlen >= 61)
1212                 return 64 + 50 - wlen;
1213
1214         return 0;
1215 }
1216
1217 static void at76_rx_callback(struct urb *urb)
1218 {
1219         struct at76_priv *priv = urb->context;
1220
1221         priv->rx_tasklet.data = (unsigned long)urb;
1222         tasklet_schedule(&priv->rx_tasklet);
1223 }
1224
1225 static int at76_submit_rx_urb(struct at76_priv *priv)
1226 {
1227         int ret;
1228         int size;
1229         struct sk_buff *skb = priv->rx_skb;
1230
1231         if (!priv->rx_urb) {
1232                 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n",
1233                           __func__);
1234                 return -EFAULT;
1235         }
1236
1237         if (!skb) {
1238                 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1239                 if (!skb) {
1240                         wiphy_err(priv->hw->wiphy,
1241                                   "cannot allocate rx skbuff\n");
1242                         ret = -ENOMEM;
1243                         goto exit;
1244                 }
1245                 priv->rx_skb = skb;
1246         } else {
1247                 skb_push(skb, skb_headroom(skb));
1248                 skb_trim(skb, 0);
1249         }
1250
1251         size = skb_tailroom(skb);
1252         usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1253                           skb_put(skb, size), size, at76_rx_callback, priv);
1254         ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1255         if (ret < 0) {
1256                 if (ret == -ENODEV)
1257                         at76_dbg(DBG_DEVSTART,
1258                                  "usb_submit_urb returned -ENODEV");
1259                 else
1260                         wiphy_err(priv->hw->wiphy,
1261                                   "rx, usb_submit_urb failed: %d\n", ret);
1262         }
1263
1264 exit:
1265         if (ret < 0 && ret != -ENODEV)
1266                 wiphy_err(priv->hw->wiphy,
1267                           "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1268
1269         return ret;
1270 }
1271
1272 /* Download external firmware */
1273 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1274 {
1275         int ret;
1276         int op_mode;
1277         int blockno = 0;
1278         int bsize;
1279         u8 *block;
1280         u8 *buf = fwe->extfw;
1281         int size = fwe->extfw_size;
1282
1283         if (!buf || !size)
1284                 return -ENOENT;
1285
1286         op_mode = at76_get_op_mode(udev);
1287         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1288
1289         if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1290                 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
1291                            op_mode);
1292                 return -EINVAL;
1293         }
1294
1295         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1296         if (!block)
1297                 return -ENOMEM;
1298
1299         at76_dbg(DBG_DEVSTART, "downloading external firmware");
1300
1301         /* for fw >= 0.100, the device needs an extra empty block */
1302         do {
1303                 bsize = min_t(int, size, FW_BLOCK_SIZE);
1304                 memcpy(block, buf, bsize);
1305                 at76_dbg(DBG_DEVSTART,
1306                          "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1307                          size, bsize, blockno);
1308                 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1309                 if (ret != bsize) {
1310                         dev_printk(KERN_ERR, &udev->dev,
1311                                    "loading %dth firmware block failed: %d\n",
1312                                    blockno, ret);
1313                         goto exit;
1314                 }
1315                 buf += bsize;
1316                 size -= bsize;
1317                 blockno++;
1318         } while (bsize > 0);
1319
1320         if (at76_is_505a(fwe->board_type)) {
1321                 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1322                 schedule_timeout_interruptible(HZ / 5 + 1);
1323         }
1324
1325 exit:
1326         kfree(block);
1327         if (ret < 0)
1328                 dev_printk(KERN_ERR, &udev->dev,
1329                            "downloading external firmware failed: %d\n", ret);
1330         return ret;
1331 }
1332
1333 /* Download internal firmware */
1334 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1335 {
1336         int ret;
1337         int need_remap = !at76_is_505a(fwe->board_type);
1338
1339         ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1340                                    need_remap ? 0 : 2 * HZ);
1341
1342         if (ret < 0) {
1343                 dev_printk(KERN_ERR, &udev->dev,
1344                            "downloading internal fw failed with %d\n", ret);
1345                 goto exit;
1346         }
1347
1348         at76_dbg(DBG_DEVSTART, "sending REMAP");
1349
1350         /* no REMAP for 505A (see SF driver) */
1351         if (need_remap) {
1352                 ret = at76_remap(udev);
1353                 if (ret < 0) {
1354                         dev_printk(KERN_ERR, &udev->dev,
1355                                    "sending REMAP failed with %d\n", ret);
1356                         goto exit;
1357                 }
1358         }
1359
1360         at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1361         schedule_timeout_interruptible(2 * HZ + 1);
1362         usb_reset_device(udev);
1363
1364 exit:
1365         return ret;
1366 }
1367
1368 static int at76_startup_device(struct at76_priv *priv)
1369 {
1370         struct at76_card_config *ccfg = &priv->card_config;
1371         int ret;
1372
1373         at76_dbg(DBG_PARAMS,
1374                  "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
1375                  "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1376                  priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE),
1377                  priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1378                  priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1379                  priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1380         at76_dbg(DBG_PARAMS,
1381                  "%s param: preamble %s rts %d retry %d frag %d "
1382                  "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1383                  preambles[priv->preamble_type], priv->rts_threshold,
1384                  priv->short_retry_limit, priv->frag_threshold,
1385                  priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1386                  TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1387                  TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1388                  TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1389                  TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1390         at76_dbg(DBG_PARAMS,
1391                  "%s param: pm_mode %d pm_period %d auth_mode %s "
1392                  "scan_times %d %d scan_mode %s",
1393                  wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1394                  priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1395                  priv->scan_min_time, priv->scan_max_time,
1396                  priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1397
1398         memset(ccfg, 0, sizeof(struct at76_card_config));
1399         ccfg->promiscuous_mode = 0;
1400         ccfg->short_retry_limit = priv->short_retry_limit;
1401
1402         if (priv->wep_enabled) {
1403                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1404                         ccfg->encryption_type = 2;
1405                 else
1406                         ccfg->encryption_type = 1;
1407
1408                 /* jal: always exclude unencrypted if WEP is active */
1409                 ccfg->exclude_unencrypted = 1;
1410         } else {
1411                 ccfg->exclude_unencrypted = 0;
1412                 ccfg->encryption_type = 0;
1413         }
1414
1415         ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1416         ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1417
1418         memcpy(ccfg->basic_rate_set, hw_rates, 4);
1419         /* jal: really needed, we do a set_mib for autorate later ??? */
1420         ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1421         ccfg->channel = priv->channel;
1422         ccfg->privacy_invoked = priv->wep_enabled;
1423         memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1424         ccfg->ssid_len = priv->essid_size;
1425
1426         ccfg->wep_default_key_id = priv->wep_key_id;
1427         memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1428                sizeof(priv->wep_keys));
1429
1430         ccfg->short_preamble = priv->preamble_type;
1431         ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1432
1433         ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1434                                     sizeof(struct at76_card_config));
1435         if (ret < 0) {
1436                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1437                           ret);
1438                 return ret;
1439         }
1440
1441         at76_wait_completion(priv, CMD_STARTUP);
1442
1443         /* remove BSSID from previous run */
1444         memset(priv->bssid, 0, ETH_ALEN);
1445
1446         if (at76_set_radio(priv, 1) == 1)
1447                 at76_wait_completion(priv, CMD_RADIO_ON);
1448
1449         ret = at76_set_preamble(priv, priv->preamble_type);
1450         if (ret < 0)
1451                 return ret;
1452
1453         ret = at76_set_frag(priv, priv->frag_threshold);
1454         if (ret < 0)
1455                 return ret;
1456
1457         ret = at76_set_rts(priv, priv->rts_threshold);
1458         if (ret < 0)
1459                 return ret;
1460
1461         ret = at76_set_autorate_fallback(priv,
1462                                          priv->txrate == TX_RATE_AUTO ? 1 : 0);
1463         if (ret < 0)
1464                 return ret;
1465
1466         ret = at76_set_pm_mode(priv);
1467         if (ret < 0)
1468                 return ret;
1469
1470         if (at76_debug & DBG_MIB) {
1471                 at76_dump_mib_mac(priv);
1472                 at76_dump_mib_mac_addr(priv);
1473                 at76_dump_mib_mac_mgmt(priv);
1474                 at76_dump_mib_mac_wep(priv);
1475                 at76_dump_mib_mdomain(priv);
1476                 at76_dump_mib_phy(priv);
1477                 at76_dump_mib_local(priv);
1478         }
1479
1480         return 0;
1481 }
1482
1483 /* Enable or disable promiscuous mode */
1484 static void at76_work_set_promisc(struct work_struct *work)
1485 {
1486         struct at76_priv *priv = container_of(work, struct at76_priv,
1487                                               work_set_promisc);
1488         int ret = 0;
1489
1490         if (priv->device_unplugged)
1491                 return;
1492
1493         mutex_lock(&priv->mtx);
1494
1495         priv->mib_buf.type = MIB_LOCAL;
1496         priv->mib_buf.size = 1;
1497         priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1498         priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1499
1500         ret = at76_set_mib(priv, &priv->mib_buf);
1501         if (ret < 0)
1502                 wiphy_err(priv->hw->wiphy,
1503                           "set_mib (promiscuous_mode) failed: %d\n", ret);
1504
1505         mutex_unlock(&priv->mtx);
1506 }
1507
1508 /* Submit Rx urb back to the device */
1509 static void at76_work_submit_rx(struct work_struct *work)
1510 {
1511         struct at76_priv *priv = container_of(work, struct at76_priv,
1512                                               work_submit_rx);
1513
1514         mutex_lock(&priv->mtx);
1515         at76_submit_rx_urb(priv);
1516         mutex_unlock(&priv->mtx);
1517 }
1518
1519 static void at76_rx_tasklet(unsigned long param)
1520 {
1521         struct urb *urb = (struct urb *)param;
1522         struct at76_priv *priv = urb->context;
1523         struct at76_rx_buffer *buf;
1524         struct ieee80211_rx_status rx_status = { 0 };
1525
1526         if (priv->device_unplugged) {
1527                 at76_dbg(DBG_DEVSTART, "device unplugged");
1528                 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1529                 return;
1530         }
1531
1532         if (!priv->rx_skb || !priv->rx_skb->data)
1533                 return;
1534
1535         buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1536
1537         if (urb->status != 0) {
1538                 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1539                         at76_dbg(DBG_URB,
1540                                  "%s %s: - nonzero Rx bulk status received: %d",
1541                                  __func__, wiphy_name(priv->hw->wiphy),
1542                                  urb->status);
1543                 return;
1544         }
1545
1546         at76_dbg(DBG_RX_ATMEL_HDR,
1547                  "%s: rx frame: rate %d rssi %d noise %d link %d",
1548                  wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1549                  buf->noise_level, buf->link_quality);
1550
1551         skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1552         skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1553         at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1554                       priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1555
1556         rx_status.signal = buf->rssi;
1557         rx_status.flag |= RX_FLAG_DECRYPTED;
1558         rx_status.flag |= RX_FLAG_IV_STRIPPED;
1559
1560         at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1561                  priv->rx_skb->len, priv->rx_skb->data_len);
1562         memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1563         ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1564
1565         /* Use a new skb for the next receive */
1566         priv->rx_skb = NULL;
1567
1568         at76_submit_rx_urb(priv);
1569 }
1570
1571 /* Load firmware into kernel memory and parse it */
1572 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1573                                           enum board_type board_type)
1574 {
1575         int ret;
1576         char *str;
1577         struct at76_fw_header *fwh;
1578         struct fwentry *fwe = &firmwares[board_type];
1579
1580         mutex_lock(&fw_mutex);
1581
1582         if (fwe->loaded) {
1583                 at76_dbg(DBG_FW, "re-using previously loaded fw");
1584                 goto exit;
1585         }
1586
1587         at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1588         ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1589         if (ret < 0) {
1590                 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
1591                            fwe->fwname);
1592                 dev_printk(KERN_ERR, &udev->dev,
1593                            "you may need to download the firmware from "
1594                            "http://developer.berlios.de/projects/at76c503a/\n");
1595                 goto exit;
1596         }
1597
1598         at76_dbg(DBG_FW, "got it.");
1599         fwh = (struct at76_fw_header *)(fwe->fw->data);
1600
1601         if (fwe->fw->size <= sizeof(*fwh)) {
1602                 dev_printk(KERN_ERR, &udev->dev,
1603                            "firmware is too short (0x%zx)\n", fwe->fw->size);
1604                 goto exit;
1605         }
1606
1607         /* CRC currently not checked */
1608         fwe->board_type = le32_to_cpu(fwh->board_type);
1609         if (fwe->board_type != board_type) {
1610                 dev_printk(KERN_ERR, &udev->dev,
1611                            "board type mismatch, requested %u, got %u\n",
1612                            board_type, fwe->board_type);
1613                 goto exit;
1614         }
1615
1616         fwe->fw_version.major = fwh->major;
1617         fwe->fw_version.minor = fwh->minor;
1618         fwe->fw_version.patch = fwh->patch;
1619         fwe->fw_version.build = fwh->build;
1620
1621         str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1622         fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1623         fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1624         fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1625         fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1626
1627         fwe->loaded = 1;
1628
1629         dev_printk(KERN_DEBUG, &udev->dev,
1630                    "using firmware %s (version %d.%d.%d-%d)\n",
1631                    fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1632
1633         at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1634                  le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1635                  le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1636         at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1637
1638 exit:
1639         mutex_unlock(&fw_mutex);
1640
1641         if (fwe->loaded)
1642                 return fwe;
1643         else
1644                 return NULL;
1645 }
1646
1647 static int at76_join(struct at76_priv *priv)
1648 {
1649         struct at76_req_join join;
1650         int ret;
1651
1652         memset(&join, 0, sizeof(struct at76_req_join));
1653         memcpy(join.essid, priv->essid, priv->essid_size);
1654         join.essid_size = priv->essid_size;
1655         memcpy(join.bssid, priv->bssid, ETH_ALEN);
1656         join.bss_type = INFRASTRUCTURE_MODE;
1657         join.channel = priv->channel;
1658         join.timeout = cpu_to_le16(2000);
1659
1660         at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1661         ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1662                                     sizeof(struct at76_req_join));
1663
1664         if (ret < 0) {
1665                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1666                           ret);
1667                 return 0;
1668         }
1669
1670         ret = at76_wait_completion(priv, CMD_JOIN);
1671         at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1672         if (ret != CMD_STATUS_COMPLETE) {
1673                 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1674                           ret);
1675                 return 0;
1676         }
1677
1678         at76_set_pm_mode(priv);
1679
1680         return 0;
1681 }
1682
1683 static void at76_work_join_bssid(struct work_struct *work)
1684 {
1685         struct at76_priv *priv = container_of(work, struct at76_priv,
1686                                               work_join_bssid);
1687
1688         if (priv->device_unplugged)
1689                 return;
1690
1691         mutex_lock(&priv->mtx);
1692
1693         if (is_valid_ether_addr(priv->bssid))
1694                 at76_join(priv);
1695
1696         mutex_unlock(&priv->mtx);
1697 }
1698
1699 static void at76_mac80211_tx_callback(struct urb *urb)
1700 {
1701         struct at76_priv *priv = urb->context;
1702         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1703
1704         at76_dbg(DBG_MAC80211, "%s()", __func__);
1705
1706         switch (urb->status) {
1707         case 0:
1708                 /* success */
1709                 info->flags |= IEEE80211_TX_STAT_ACK;
1710                 break;
1711         case -ENOENT:
1712         case -ECONNRESET:
1713                 /* fail, urb has been unlinked */
1714                 /* FIXME: add error message */
1715                 break;
1716         default:
1717                 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1718                          __func__, urb->status);
1719                 break;
1720         }
1721
1722         memset(&info->status, 0, sizeof(info->status));
1723
1724         ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1725
1726         priv->tx_skb = NULL;
1727
1728         ieee80211_wake_queues(priv->hw);
1729 }
1730
1731 static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1732 {
1733         struct at76_priv *priv = hw->priv;
1734         struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1735         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1736         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1737         int padding, submit_len, ret;
1738
1739         at76_dbg(DBG_MAC80211, "%s()", __func__);
1740
1741         if (priv->tx_urb->status == -EINPROGRESS) {
1742                 wiphy_err(priv->hw->wiphy,
1743                           "%s called while tx urb is pending\n", __func__);
1744                 return NETDEV_TX_BUSY;
1745         }
1746
1747         /* The following code lines are important when the device is going to
1748          * authenticate with a new bssid. The driver must send CMD_JOIN before
1749          * an authentication frame is transmitted. For this to succeed, the
1750          * correct bssid of the AP must be known. As mac80211 does not inform
1751          * drivers about the bssid prior to the authentication process the
1752          * following workaround is necessary. If the TX frame is an
1753          * authentication frame extract the bssid and send the CMD_JOIN. */
1754         if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1755                 if (compare_ether_addr(priv->bssid, mgmt->bssid)) {
1756                         memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1757                         ieee80211_queue_work(hw, &priv->work_join_bssid);
1758                         return NETDEV_TX_BUSY;
1759                 }
1760         }
1761
1762         ieee80211_stop_queues(hw);
1763
1764         at76_ledtrig_tx_activity();     /* tell ledtrigger we send a packet */
1765
1766         WARN_ON(priv->tx_skb != NULL);
1767
1768         priv->tx_skb = skb;
1769         padding = at76_calc_padding(skb->len);
1770         submit_len = AT76_TX_HDRLEN + skb->len + padding;
1771
1772         /* setup 'Atmel' header */
1773         memset(tx_buffer, 0, sizeof(*tx_buffer));
1774         tx_buffer->padding = padding;
1775         tx_buffer->wlength = cpu_to_le16(skb->len);
1776         tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1777         memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1778         memcpy(tx_buffer->packet, skb->data, skb->len);
1779
1780         at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1781                  wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1782                  tx_buffer->padding, tx_buffer->tx_rate);
1783
1784         /* send stuff */
1785         at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1786                       "%s(): tx_buffer %d bytes:", __func__, submit_len);
1787         usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1788                           submit_len, at76_mac80211_tx_callback, priv);
1789         ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1790         if (ret) {
1791                 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1792                 if (ret == -EINVAL)
1793                         wiphy_err(priv->hw->wiphy,
1794                                   "-EINVAL: tx urb %p hcpriv %p complete %p\n",
1795                                   priv->tx_urb,
1796                                   priv->tx_urb->hcpriv, priv->tx_urb->complete);
1797         }
1798
1799         return 0;
1800 }
1801
1802 static int at76_mac80211_start(struct ieee80211_hw *hw)
1803 {
1804         struct at76_priv *priv = hw->priv;
1805         int ret;
1806
1807         at76_dbg(DBG_MAC80211, "%s()", __func__);
1808
1809         mutex_lock(&priv->mtx);
1810
1811         ret = at76_submit_rx_urb(priv);
1812         if (ret < 0) {
1813                 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1814                           ret);
1815                 goto error;
1816         }
1817
1818         at76_startup_device(priv);
1819
1820         at76_start_monitor(priv);
1821
1822 error:
1823         mutex_unlock(&priv->mtx);
1824
1825         return 0;
1826 }
1827
1828 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1829 {
1830         struct at76_priv *priv = hw->priv;
1831
1832         at76_dbg(DBG_MAC80211, "%s()", __func__);
1833
1834         cancel_delayed_work(&priv->dwork_hw_scan);
1835         cancel_work_sync(&priv->work_join_bssid);
1836         cancel_work_sync(&priv->work_set_promisc);
1837
1838         mutex_lock(&priv->mtx);
1839
1840         if (!priv->device_unplugged) {
1841                 /* We are called by "ifconfig ethX down", not because the
1842                  * device is not available anymore. */
1843                 at76_set_radio(priv, 0);
1844
1845                 /* We unlink rx_urb because at76_open() re-submits it.
1846                  * If unplugged, at76_delete_device() takes care of it. */
1847                 usb_kill_urb(priv->rx_urb);
1848         }
1849
1850         mutex_unlock(&priv->mtx);
1851 }
1852
1853 static int at76_add_interface(struct ieee80211_hw *hw,
1854                               struct ieee80211_vif *vif)
1855 {
1856         struct at76_priv *priv = hw->priv;
1857         int ret = 0;
1858
1859         at76_dbg(DBG_MAC80211, "%s()", __func__);
1860
1861         mutex_lock(&priv->mtx);
1862
1863         switch (vif->type) {
1864         case NL80211_IFTYPE_STATION:
1865                 priv->iw_mode = IW_MODE_INFRA;
1866                 break;
1867         default:
1868                 ret = -EOPNOTSUPP;
1869                 goto exit;
1870         }
1871
1872 exit:
1873         mutex_unlock(&priv->mtx);
1874
1875         return ret;
1876 }
1877
1878 static void at76_remove_interface(struct ieee80211_hw *hw,
1879                                   struct ieee80211_vif *vif)
1880 {
1881         at76_dbg(DBG_MAC80211, "%s()", __func__);
1882 }
1883
1884 static void at76_dwork_hw_scan(struct work_struct *work)
1885 {
1886         struct at76_priv *priv = container_of(work, struct at76_priv,
1887                                               dwork_hw_scan.work);
1888         int ret;
1889
1890         if (priv->device_unplugged)
1891                 return;
1892
1893         mutex_lock(&priv->mtx);
1894
1895         ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1896         at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1897
1898         /* FIXME: add maximum time for scan to complete */
1899
1900         if (ret != CMD_STATUS_COMPLETE) {
1901                 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1902                                              SCAN_POLL_INTERVAL);
1903                 mutex_unlock(&priv->mtx);
1904                 return;
1905         }
1906
1907         if (is_valid_ether_addr(priv->bssid))
1908                 at76_join(priv);
1909
1910         mutex_unlock(&priv->mtx);
1911
1912         ieee80211_scan_completed(priv->hw, false);
1913
1914         ieee80211_wake_queues(priv->hw);
1915 }
1916
1917 static int at76_hw_scan(struct ieee80211_hw *hw,
1918                         struct ieee80211_vif *vif,
1919                         struct cfg80211_scan_request *req)
1920 {
1921         struct at76_priv *priv = hw->priv;
1922         struct at76_req_scan scan;
1923         u8 *ssid = NULL;
1924         int ret, len = 0;
1925
1926         at76_dbg(DBG_MAC80211, "%s():", __func__);
1927
1928         if (priv->device_unplugged)
1929                 return 0;
1930
1931         mutex_lock(&priv->mtx);
1932
1933         ieee80211_stop_queues(hw);
1934
1935         memset(&scan, 0, sizeof(struct at76_req_scan));
1936         memset(scan.bssid, 0xFF, ETH_ALEN);
1937
1938         if (req->n_ssids) {
1939                 scan.scan_type = SCAN_TYPE_ACTIVE;
1940                 ssid = req->ssids[0].ssid;
1941                 len = req->ssids[0].ssid_len;
1942         } else {
1943                 scan.scan_type = SCAN_TYPE_PASSIVE;
1944         }
1945
1946         if (len) {
1947                 memcpy(scan.essid, ssid, len);
1948                 scan.essid_size = len;
1949         }
1950
1951         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1952         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1953         scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1954         scan.international_scan = 0;
1955
1956         at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1957         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1958
1959         if (ret < 0) {
1960                 err("CMD_SCAN failed: %d", ret);
1961                 goto exit;
1962         }
1963
1964         ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1965                                      SCAN_POLL_INTERVAL);
1966
1967 exit:
1968         mutex_unlock(&priv->mtx);
1969
1970         return 0;
1971 }
1972
1973 static int at76_config(struct ieee80211_hw *hw, u32 changed)
1974 {
1975         struct at76_priv *priv = hw->priv;
1976
1977         at76_dbg(DBG_MAC80211, "%s(): channel %d",
1978                  __func__, hw->conf.channel->hw_value);
1979         at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1980
1981         mutex_lock(&priv->mtx);
1982
1983         priv->channel = hw->conf.channel->hw_value;
1984
1985         if (is_valid_ether_addr(priv->bssid))
1986                 at76_join(priv);
1987         else
1988                 at76_start_monitor(priv);
1989
1990         mutex_unlock(&priv->mtx);
1991
1992         return 0;
1993 }
1994
1995 static void at76_bss_info_changed(struct ieee80211_hw *hw,
1996                                   struct ieee80211_vif *vif,
1997                                   struct ieee80211_bss_conf *conf,
1998                                   u32 changed)
1999 {
2000         struct at76_priv *priv = hw->priv;
2001
2002         at76_dbg(DBG_MAC80211, "%s():", __func__);
2003
2004         if (!(changed & BSS_CHANGED_BSSID))
2005                 return;
2006
2007         at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2008
2009         mutex_lock(&priv->mtx);
2010
2011         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2012
2013         if (is_valid_ether_addr(priv->bssid))
2014                 /* mac80211 is joining a bss */
2015                 at76_join(priv);
2016
2017         mutex_unlock(&priv->mtx);
2018 }
2019
2020 /* must be atomic */
2021 static void at76_configure_filter(struct ieee80211_hw *hw,
2022                                   unsigned int changed_flags,
2023                                   unsigned int *total_flags, u64 multicast)
2024 {
2025         struct at76_priv *priv = hw->priv;
2026         int flags;
2027
2028         at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2029                  "total_flags=0x%08x",
2030                  __func__, changed_flags, *total_flags);
2031
2032         flags = changed_flags & AT76_SUPPORTED_FILTERS;
2033         *total_flags = AT76_SUPPORTED_FILTERS;
2034
2035         /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2036         if (priv->device_unplugged)
2037                 return;
2038
2039         /* FIXME: access to priv->promisc should be protected with
2040          * priv->mtx, but it's impossible because this function needs to be
2041          * atomic */
2042
2043         if (flags && !priv->promisc) {
2044                 /* mac80211 wants us to enable promiscuous mode */
2045                 priv->promisc = 1;
2046         } else if (!flags && priv->promisc) {
2047                 /* we need to disable promiscuous mode */
2048                 priv->promisc = 0;
2049         } else
2050                 return;
2051
2052         ieee80211_queue_work(hw, &priv->work_set_promisc);
2053 }
2054
2055 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2056                         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2057                         struct ieee80211_key_conf *key)
2058 {
2059         struct at76_priv *priv = hw->priv;
2060
2061         int i;
2062
2063         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d "
2064                  "key->keylen %d",
2065                  __func__, cmd, key->cipher, key->keyidx, key->keylen);
2066
2067         if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) &&
2068             (key->cipher != WLAN_CIPHER_SUITE_WEP104))
2069                 return -EOPNOTSUPP;
2070
2071         key->hw_key_idx = key->keyidx;
2072
2073         mutex_lock(&priv->mtx);
2074
2075         switch (cmd) {
2076         case SET_KEY:
2077                 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2078                 priv->wep_keys_len[key->keyidx] = key->keylen;
2079
2080                 /* FIXME: find out how to do this properly */
2081                 priv->wep_key_id = key->keyidx;
2082
2083                 break;
2084         case DISABLE_KEY:
2085         default:
2086                 priv->wep_keys_len[key->keyidx] = 0;
2087                 break;
2088         }
2089
2090         priv->wep_enabled = 0;
2091
2092         for (i = 0; i < WEP_KEYS; i++) {
2093                 if (priv->wep_keys_len[i] != 0)
2094                         priv->wep_enabled = 1;
2095         }
2096
2097         at76_startup_device(priv);
2098
2099         mutex_unlock(&priv->mtx);
2100
2101         return 0;
2102 }
2103
2104 static const struct ieee80211_ops at76_ops = {
2105         .tx = at76_mac80211_tx,
2106         .add_interface = at76_add_interface,
2107         .remove_interface = at76_remove_interface,
2108         .config = at76_config,
2109         .bss_info_changed = at76_bss_info_changed,
2110         .configure_filter = at76_configure_filter,
2111         .start = at76_mac80211_start,
2112         .stop = at76_mac80211_stop,
2113         .hw_scan = at76_hw_scan,
2114         .set_key = at76_set_key,
2115 };
2116
2117 /* Allocate network device and initialize private data */
2118 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2119 {
2120         struct ieee80211_hw *hw;
2121         struct at76_priv *priv;
2122
2123         hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2124         if (!hw) {
2125                 printk(KERN_ERR DRIVER_NAME ": could not register"
2126                        " ieee80211_hw\n");
2127                 return NULL;
2128         }
2129
2130         priv = hw->priv;
2131         priv->hw = hw;
2132
2133         priv->udev = udev;
2134
2135         mutex_init(&priv->mtx);
2136         INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2137         INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2138         INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2139         INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2140
2141         tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2142
2143         priv->pm_mode = AT76_PM_OFF;
2144         priv->pm_period = 0;
2145
2146         /* unit us */
2147         priv->hw->channel_change_time = 100000;
2148
2149         return priv;
2150 }
2151
2152 static int at76_alloc_urbs(struct at76_priv *priv,
2153                            struct usb_interface *interface)
2154 {
2155         struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2156         int i;
2157         int buffer_size;
2158         struct usb_host_interface *iface_desc;
2159
2160         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2161
2162         at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2163                  interface->altsetting[0].desc.bNumEndpoints);
2164
2165         ep_in = NULL;
2166         ep_out = NULL;
2167         iface_desc = interface->cur_altsetting;
2168         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2169                 endpoint = &iface_desc->endpoint[i].desc;
2170
2171                 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2172                          __func__, i, endpoint->bEndpointAddress,
2173                          endpoint->bmAttributes);
2174
2175                 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2176                         ep_in = endpoint;
2177
2178                 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2179                         ep_out = endpoint;
2180         }
2181
2182         if (!ep_in || !ep_out) {
2183                 dev_printk(KERN_ERR, &interface->dev,
2184                            "bulk endpoints missing\n");
2185                 return -ENXIO;
2186         }
2187
2188         priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2189         priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2190
2191         priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2192         priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2193         if (!priv->rx_urb || !priv->tx_urb) {
2194                 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
2195                 return -ENOMEM;
2196         }
2197
2198         buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2199         priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2200         if (!priv->bulk_out_buffer) {
2201                 dev_printk(KERN_ERR, &interface->dev,
2202                            "cannot allocate output buffer\n");
2203                 return -ENOMEM;
2204         }
2205
2206         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2207
2208         return 0;
2209 }
2210
2211 static struct ieee80211_rate at76_rates[] = {
2212         { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2213         { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2214         { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2215         { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2216 };
2217
2218 static struct ieee80211_channel at76_channels[] = {
2219         { .center_freq = 2412, .hw_value = 1 },
2220         { .center_freq = 2417, .hw_value = 2 },
2221         { .center_freq = 2422, .hw_value = 3 },
2222         { .center_freq = 2427, .hw_value = 4 },
2223         { .center_freq = 2432, .hw_value = 5 },
2224         { .center_freq = 2437, .hw_value = 6 },
2225         { .center_freq = 2442, .hw_value = 7 },
2226         { .center_freq = 2447, .hw_value = 8 },
2227         { .center_freq = 2452, .hw_value = 9 },
2228         { .center_freq = 2457, .hw_value = 10 },
2229         { .center_freq = 2462, .hw_value = 11 },
2230         { .center_freq = 2467, .hw_value = 12 },
2231         { .center_freq = 2472, .hw_value = 13 },
2232         { .center_freq = 2484, .hw_value = 14 }
2233 };
2234
2235 static struct ieee80211_supported_band at76_supported_band = {
2236         .channels = at76_channels,
2237         .n_channels = ARRAY_SIZE(at76_channels),
2238         .bitrates = at76_rates,
2239         .n_bitrates = ARRAY_SIZE(at76_rates),
2240 };
2241
2242 /* Register network device and initialize the hardware */
2243 static int at76_init_new_device(struct at76_priv *priv,
2244                                 struct usb_interface *interface)
2245 {
2246         struct wiphy *wiphy;
2247         size_t len;
2248         int ret;
2249
2250         /* set up the endpoint information */
2251         /* check out the endpoints */
2252
2253         at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2254                  interface->cur_altsetting->desc.bNumEndpoints);
2255
2256         ret = at76_alloc_urbs(priv, interface);
2257         if (ret < 0)
2258                 goto exit;
2259
2260         /* MAC address */
2261         ret = at76_get_hw_config(priv);
2262         if (ret < 0) {
2263                 dev_printk(KERN_ERR, &interface->dev,
2264                            "cannot get MAC address\n");
2265                 goto exit;
2266         }
2267
2268         priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2269
2270         priv->channel = DEF_CHANNEL;
2271         priv->iw_mode = IW_MODE_INFRA;
2272         priv->rts_threshold = DEF_RTS_THRESHOLD;
2273         priv->frag_threshold = DEF_FRAG_THRESHOLD;
2274         priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2275         priv->txrate = TX_RATE_AUTO;
2276         priv->preamble_type = PREAMBLE_TYPE_LONG;
2277         priv->beacon_period = 100;
2278         priv->auth_mode = WLAN_AUTH_OPEN;
2279         priv->scan_min_time = DEF_SCAN_MIN_TIME;
2280         priv->scan_max_time = DEF_SCAN_MAX_TIME;
2281         priv->scan_mode = SCAN_TYPE_ACTIVE;
2282         priv->device_unplugged = 0;
2283
2284         /* mac80211 initialisation */
2285         wiphy = priv->hw->wiphy;
2286         priv->hw->wiphy->max_scan_ssids = 1;
2287         priv->hw->wiphy->max_scan_ie_len = 0;
2288         priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2289         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2290         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2291                           IEEE80211_HW_SIGNAL_UNSPEC;
2292         priv->hw->max_signal = 100;
2293
2294         SET_IEEE80211_DEV(priv->hw, &interface->dev);
2295         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2296
2297         len = sizeof(wiphy->fw_version);
2298         snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2299                  priv->fw_version.major, priv->fw_version.minor,
2300                  priv->fw_version.patch, priv->fw_version.build);
2301
2302         wiphy->hw_version = priv->board_type;
2303
2304         ret = ieee80211_register_hw(priv->hw);
2305         if (ret) {
2306                 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2307                        ret);
2308                 goto exit;
2309         }
2310
2311         priv->mac80211_registered = 1;
2312
2313         wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2314                    dev_name(&interface->dev), priv->mac_addr,
2315                    priv->fw_version.major, priv->fw_version.minor,
2316                    priv->fw_version.patch, priv->fw_version.build);
2317         wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2318                    priv->regulatory_domain, priv->domain->name);
2319
2320 exit:
2321         return ret;
2322 }
2323
2324 static void at76_delete_device(struct at76_priv *priv)
2325 {
2326         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2327
2328         /* The device is gone, don't bother turning it off */
2329         priv->device_unplugged = 1;
2330
2331         tasklet_kill(&priv->rx_tasklet);
2332
2333         if (priv->mac80211_registered)
2334                 ieee80211_unregister_hw(priv->hw);
2335
2336         if (priv->tx_urb) {
2337                 usb_kill_urb(priv->tx_urb);
2338                 usb_free_urb(priv->tx_urb);
2339         }
2340         if (priv->rx_urb) {
2341                 usb_kill_urb(priv->rx_urb);
2342                 usb_free_urb(priv->rx_urb);
2343         }
2344
2345         at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2346
2347         kfree(priv->bulk_out_buffer);
2348
2349         del_timer_sync(&ledtrig_tx_timer);
2350
2351         kfree_skb(priv->rx_skb);
2352
2353         usb_put_dev(priv->udev);
2354
2355         at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2356                  __func__);
2357         ieee80211_free_hw(priv->hw);
2358
2359         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2360 }
2361
2362 static int at76_probe(struct usb_interface *interface,
2363                       const struct usb_device_id *id)
2364 {
2365         int ret;
2366         struct at76_priv *priv;
2367         struct fwentry *fwe;
2368         struct usb_device *udev;
2369         int op_mode;
2370         int need_ext_fw = 0;
2371         struct mib_fw_version fwv;
2372         int board_type = (int)id->driver_info;
2373
2374         udev = usb_get_dev(interface_to_usbdev(interface));
2375
2376         /* Load firmware into kernel memory */
2377         fwe = at76_load_firmware(udev, board_type);
2378         if (!fwe) {
2379                 ret = -ENOENT;
2380                 goto error;
2381         }
2382
2383         op_mode = at76_get_op_mode(udev);
2384
2385         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2386
2387         /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2388            we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2389
2390         if (op_mode == OPMODE_HW_CONFIG_MODE) {
2391                 dev_printk(KERN_ERR, &interface->dev,
2392                            "cannot handle a device in HW_CONFIG_MODE\n");
2393                 ret = -EBUSY;
2394                 goto error;
2395         }
2396
2397         if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2398             && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2399                 /* download internal firmware part */
2400                 dev_printk(KERN_DEBUG, &interface->dev,
2401                            "downloading internal firmware\n");
2402                 ret = at76_load_internal_fw(udev, fwe);
2403                 if (ret < 0) {
2404                         dev_printk(KERN_ERR, &interface->dev,
2405                                    "error %d downloading internal firmware\n",
2406                                    ret);
2407                         goto error;
2408                 }
2409                 usb_put_dev(udev);
2410                 return ret;
2411         }
2412
2413         /* Internal firmware already inside the device.  Get firmware
2414          * version to test if external firmware is loaded.
2415          * This works only for newer firmware, e.g. the Intersil 0.90.x
2416          * says "control timeout on ep0in" and subsequent
2417          * at76_get_op_mode() fail too :-( */
2418
2419         /* if version >= 0.100.x.y or device with built-in flash we can
2420          * query the device for the fw version */
2421         if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2422             || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2423                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2424                 if (ret < 0 || (fwv.major | fwv.minor) == 0)
2425                         need_ext_fw = 1;
2426         } else
2427                 /* No way to check firmware version, reload to be sure */
2428                 need_ext_fw = 1;
2429
2430         if (need_ext_fw) {
2431                 dev_printk(KERN_DEBUG, &interface->dev,
2432                            "downloading external firmware\n");
2433
2434                 ret = at76_load_external_fw(udev, fwe);
2435                 if (ret)
2436                         goto error;
2437
2438                 /* Re-check firmware version */
2439                 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
2440                 if (ret < 0) {
2441                         dev_printk(KERN_ERR, &interface->dev,
2442                                    "error %d getting firmware version\n", ret);
2443                         goto error;
2444                 }
2445         }
2446
2447         priv = at76_alloc_new_device(udev);
2448         if (!priv) {
2449                 ret = -ENOMEM;
2450                 goto error;
2451         }
2452
2453         usb_set_intfdata(interface, priv);
2454
2455         memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
2456         priv->board_type = board_type;
2457
2458         ret = at76_init_new_device(priv, interface);
2459         if (ret < 0)
2460                 at76_delete_device(priv);
2461
2462         return ret;
2463
2464 error:
2465         usb_put_dev(udev);
2466         return ret;
2467 }
2468
2469 static void at76_disconnect(struct usb_interface *interface)
2470 {
2471         struct at76_priv *priv;
2472
2473         priv = usb_get_intfdata(interface);
2474         usb_set_intfdata(interface, NULL);
2475
2476         /* Disconnect after loading internal firmware */
2477         if (!priv)
2478                 return;
2479
2480         wiphy_info(priv->hw->wiphy, "disconnecting\n");
2481         at76_delete_device(priv);
2482         dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
2483 }
2484
2485 /* Structure for registering this driver with the USB subsystem */
2486 static struct usb_driver at76_driver = {
2487         .name = DRIVER_NAME,
2488         .probe = at76_probe,
2489         .disconnect = at76_disconnect,
2490         .id_table = dev_table,
2491 };
2492
2493 static int __init at76_mod_init(void)
2494 {
2495         int result;
2496
2497         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2498
2499         mutex_init(&fw_mutex);
2500
2501         /* register this driver with the USB subsystem */
2502         result = usb_register(&at76_driver);
2503         if (result < 0)
2504                 printk(KERN_ERR DRIVER_NAME
2505                        ": usb_register failed (status %d)\n", result);
2506
2507         led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2508         return result;
2509 }
2510
2511 static void __exit at76_mod_exit(void)
2512 {
2513         int i;
2514
2515         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2516         usb_deregister(&at76_driver);
2517         for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
2518                 if (firmwares[i].fw)
2519                         release_firmware(firmwares[i].fw);
2520         }
2521         led_trigger_unregister_simple(ledtrig_tx);
2522 }
2523
2524 module_param_named(debug, at76_debug, uint, 0600);
2525 MODULE_PARM_DESC(debug, "Debugging level");
2526
2527 module_init(at76_mod_init);
2528 module_exit(at76_mod_exit);
2529
2530 MODULE_AUTHOR("Oliver Kurth <[email protected]>");
2531 MODULE_AUTHOR("Joerg Albert <[email protected]>");
2532 MODULE_AUTHOR("Alex <[email protected]>");
2533 MODULE_AUTHOR("Nick Jones");
2534 MODULE_AUTHOR("Balint Seeber <[email protected]>");
2535 MODULE_AUTHOR("Pavel Roskin <[email protected]>");
2536 MODULE_AUTHOR("Guido Guenther <[email protected]>");
2537 MODULE_AUTHOR("Kalle Valo <[email protected]>");
2538 MODULE_AUTHOR("Sebastian Smolorz <[email protected]>");
2539 MODULE_DESCRIPTION(DRIVER_DESC);
2540 MODULE_LICENSE("GPL");