drivers/net/wireless/at76c50x-usb.c

   1 /*
   2  * at76c503/at76c505 USB driver
   3  *
   4  * Copyright (c) 2002 - 2003 Oliver Kurth
   5  * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
   6  * Copyright (c) 2004 Nick Jones
   7  * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
   8  * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
   9  * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
  10  * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This file is part of the Berlios driver for WLAN USB devices based on the
  18  * Atmel AT76C503A/505/505A.
  19  *
  20  * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
  21  *
  22  * TODO list is at the wiki:
  23  *
  24  * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO
  25  *
  26  */
  27
  28 #include <linux/init.h>
  29 #include <linux/kernel.h>
  30 #include <linux/sched.h>
  31 #include <linux/errno.h>
  32 #include <linux/slab.h>
  33 #include <linux/module.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/list.h>
  36 #include <linux/usb.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/if_arp.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/ethtool.h>
  41 #include <linux/wireless.h>
  42 #include <net/iw_handler.h>
  43 #include <net/ieee80211_radiotap.h>
  44 #include <linux/firmware.h>
  45 #include <linux/leds.h>
  46 #include <net/mac80211.h>
  47
  48 #include "at76c50x-usb.h"
  49
  50 /* Version information */
  51 #define DRIVER_NAME "at76c50x-usb"
  52 #define DRIVER_VERSION  "0.17"
  53 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
  54
  55 /* at76_debug bits */
  56 #define DBG_PROGRESS            0x00000001      /* authentication/accociation */
  57 #define DBG_BSS_TABLE           0x00000002      /* show BSS table after scans */
  58 #define DBG_IOCTL               0x00000004      /* ioctl calls / settings */
  59 #define DBG_MAC_STATE           0x00000008      /* MAC state transitions */
  60 #define DBG_TX_DATA             0x00000010      /* tx header */
  61 #define DBG_TX_DATA_CONTENT     0x00000020      /* tx content */
  62 #define DBG_TX_MGMT             0x00000040      /* tx management */
  63 #define DBG_RX_DATA             0x00000080      /* rx data header */
  64 #define DBG_RX_DATA_CONTENT     0x00000100      /* rx data content */
  65 #define DBG_RX_MGMT             0x00000200      /* rx mgmt frame headers */
  66 #define DBG_RX_BEACON           0x00000400      /* rx beacon */
  67 #define DBG_RX_CTRL             0x00000800      /* rx control */
  68 #define DBG_RX_MGMT_CONTENT     0x00001000      /* rx mgmt content */
  69 #define DBG_RX_FRAGS            0x00002000      /* rx data fragment handling */
  70 #define DBG_DEVSTART            0x00004000      /* fw download, device start */
  71 #define DBG_URB                 0x00008000      /* rx urb status, ... */
  72 #define DBG_RX_ATMEL_HDR        0x00010000      /* Atmel-specific Rx headers */
  73 #define DBG_PROC_ENTRY          0x00020000      /* procedure entries/exits */
  74 #define DBG_PM                  0x00040000      /* power management settings */
  75 #define DBG_BSS_MATCH           0x00080000      /* BSS match failures */
  76 #define DBG_PARAMS              0x00100000      /* show configured parameters */
  77 #define DBG_WAIT_COMPLETE       0x00200000      /* command completion */
  78 #define DBG_RX_FRAGS_SKB        0x00400000      /* skb header of Rx fragments */
  79 #define DBG_BSS_TABLE_RM        0x00800000      /* purging bss table entries */
  80 #define DBG_MONITOR_MODE        0x01000000      /* monitor mode */
  81 #define DBG_MIB                 0x02000000      /* dump all MIBs on startup */
  82 #define DBG_MGMT_TIMER          0x04000000      /* dump mgmt_timer ops */
  83 #define DBG_WE_EVENTS           0x08000000      /* dump wireless events */
  84 #define DBG_FW                  0x10000000      /* firmware download */
  85 #define DBG_DFU                 0x20000000      /* device firmware upgrade */
  86 #define DBG_CMD                 0x40000000
  87 #define DBG_MAC80211            0x80000000
  88
  89 #define DBG_DEFAULTS            0
  90
  91 /* Use our own dbg macro */
  92 #define at76_dbg(bits, format, arg...)                                  \
  93 do {                                                                    \
  94         if (at76_debug & (bits))                                        \
  95                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
  96 } while (0)
  97
  98 #define at76_dbg_dump(bits, buf, len, format, arg...)                   \
  99 do {                                                                    \
 100         if (at76_debug & (bits)) {                                      \
 101                 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
 102                 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
 103         }                                                               \
 104 } while (0)
 105
 106 static uint at76_debug = DBG_DEFAULTS;
 107
 108 /* Protect against concurrent firmware loading and parsing */
 109 static struct mutex fw_mutex;
 110
 111 static struct fwentry firmwares[] = {
 112         [0] = { "" },
 113         [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
 114         [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
 115         [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
 116         [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
 117         [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
 118         [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
 119         [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
 120         [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
 121 };
 122 MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
 123 MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
 124 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
 125 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
 126 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
 127 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
 128 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
 129 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
 130
 131 #define USB_DEVICE_DATA(__ops)  .driver_info = (kernel_ulong_t)(__ops)
 132
 133 static struct usb_device_id dev_table[] = {
 134         /*
 135          * at76c503-i3861
 136          */
 137         /* Generic AT76C503/3861 device */
 138         { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 139         /* Linksys WUSB11 v2.1/v2.6 */
 140         { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 141         /* Netgear MA101 rev. A */
 142         { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 143         /* Tekram U300C / Allnet ALL0193 */
 144         { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 145         /* HP HN210W J7801A */
 146         { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 147         /* Sitecom/Z-Com/Zyxel M4Y-750 */
 148         { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 149         /* Dynalink/Askey WLL013 (intersil) */
 150         { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 151         /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
 152         { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 153         /* BenQ AWL300 */
 154         { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 155         /* Addtron AWU-120, Compex WLU11 */
 156         { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 157         /* Intel AP310 AnyPoint II USB */
 158         { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 159         /* Dynalink L11U */
 160         { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 161         /* Arescom WL-210, FCC id 07J-GL2411USB */
 162         { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 163         /* I-O DATA WN-B11/USB */
 164         { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 165         /* BT Voyager 1010 */
 166         { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 167         /*
 168          * at76c503-i3863
 169          */
 170         /* Generic AT76C503/3863 device */
 171         { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 172         /* Samsung SWL-2100U */
 173         { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 174         /*
 175          * at76c503-rfmd
 176          */
 177         /* Generic AT76C503/RFMD device */
 178         { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 179         /* Dynalink/Askey WLL013 (rfmd) */
 180         { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
 181         /* Linksys WUSB11 v2.6 */
 182         { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
 183         /* Network Everywhere NWU11B */
 184         { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
 185         /* Netgear MA101 rev. B */
 186         { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 187         /* D-Link DWL-120 rev. E */
 188         { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
 189         /* Actiontec 802UAT1, HWU01150-01UK */
 190         { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 191         /* AirVast W-Buddie WN210 */
 192         { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 193         /* Dick Smith Electronics XH1153 802.11b USB adapter */
 194         { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
 195         /* CNet CNUSB611 */
 196         { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
 197         /* FiberLine FL-WL200U */
 198         { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
 199         /* BenQ AWL400 USB stick */
 200         { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
 201         /* 3Com 3CRSHEW696 */
 202         { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
 203         /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
 204         { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
 205         /* Belkin F5D6050, version 2 */
 206         { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
 207         /* iBlitzz, BWU613 (not *B or *SB) */
 208         { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
 209         /* Gigabyte GN-WLBM101 */
 210         { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
 211         /* Planex GW-US11S */
 212         { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
 213         /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
 214         { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
 215         /* Corega Wireless LAN USB-11 mini */
 216         { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
 217         /* Corega Wireless LAN USB-11 mini2 */
 218         { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
 219         /* Uniden PCW100 */
 220         { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
 221         /*
 222          * at76c503-rfmd-acc
 223          */
 224         /* SMC2664W */
 225         { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
 226         /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
 227         { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
 228         /*
 229          * at76c505-rfmd
 230          */
 231         /* Generic AT76C505/RFMD */
 232         { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
 233         /*
 234          * at76c505-rfmd2958
 235          */
 236         /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
 237         { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 238         /* Fiberline FL-WL240U */
 239         { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
 240         /* CNet CNUSB-611G */
 241         { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
 242         /* Linksys WUSB11 v2.8 */
 243         { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
 244         /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
 245         { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
 246         /* Corega WLAN USB Stick 11 */
 247         { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 248         /* Microstar MSI Box MS6978 */
 249         { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
 250         /*
 251          * at76c505a-rfmd2958
 252          */
 253         /* Generic AT76C505A device */
 254         { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
 255         /* Generic AT76C505AS device */
 256         { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
 257         /* Siemens Gigaset USB WLAN Adapter 11 */
 258         { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
 259         /* OQO Model 01+ Internal Wi-Fi */
 260         { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
 261         /*
 262          * at76c505amx-rfmd
 263          */
 264         /* Generic AT76C505AMX device */
 265         { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
 266         { }
 267 };
 268
 269 MODULE_DEVICE_TABLE(usb, dev_table);
 270
 271 /* Supported rates of this hardware, bit 7 marks basic rates */
 272 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
 273
 274 static const char *const preambles[] = { "long", "short", "auto" };
 275
 276 /* Firmware download */
 277 /* DFU states */
 278 #define STATE_IDLE                      0x00
 279 #define STATE_DETACH                    0x01
 280 #define STATE_DFU_IDLE                  0x02
 281 #define STATE_DFU_DOWNLOAD_SYNC         0x03
 282 #define STATE_DFU_DOWNLOAD_BUSY         0x04
 283 #define STATE_DFU_DOWNLOAD_IDLE         0x05
 284 #define STATE_DFU_MANIFEST_SYNC         0x06
 285 #define STATE_DFU_MANIFEST              0x07
 286 #define STATE_DFU_MANIFEST_WAIT_RESET   0x08
 287 #define STATE_DFU_UPLOAD_IDLE           0x09
 288 #define STATE_DFU_ERROR                 0x0a
 289
 290 /* DFU commands */
 291 #define DFU_DETACH                      0
 292 #define DFU_DNLOAD                      1
 293 #define DFU_UPLOAD                      2
 294 #define DFU_GETSTATUS                   3
 295 #define DFU_CLRSTATUS                   4
 296 #define DFU_GETSTATE                    5
 297 #define DFU_ABORT                       6
 298
 299 #define FW_BLOCK_SIZE 1024
 300
 301 struct dfu_status {
 302         unsigned char status;
 303         unsigned char poll_timeout[3];
 304         unsigned char state;
 305         unsigned char string;
 306 } __packed;
 307
 308 static inline int at76_is_intersil(enum board_type board)
 309 {
 310         return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
 311 }
 312
 313 static inline int at76_is_503rfmd(enum board_type board)
 314 {
 315         return (board == BOARD_503 || board == BOARD_503_ACC);
 316 }
 317
 318 static inline int at76_is_505a(enum board_type board)
 319 {
 320         return (board == BOARD_505A || board == BOARD_505AMX);
 321 }
 322
 323 /* Load a block of the first (internal) part of the firmware */
 324 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
 325                                   void *block, int size)
 326 {
 327         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
 328                                USB_TYPE_CLASS | USB_DIR_OUT |
 329                                USB_RECIP_INTERFACE, blockno, 0, block, size,
 330                                USB_CTRL_GET_TIMEOUT);
 331 }
 332
 333 static int at76_dfu_get_status(struct usb_device *udev,
 334                                struct dfu_status *status)
 335 {
 336         int ret;
 337
 338         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
 339                               USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 340                               0, 0, status, sizeof(struct dfu_status),
 341                               USB_CTRL_GET_TIMEOUT);
 342         return ret;
 343 }
 344
 345 static int 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         int ret = 0;
 369         int need_dfu_state = 1;
 370         int is_done = 0;
 371         u32 dfu_timeout = 0;
 372         int bsize = 0;
 373         int blockno = 0;
 374         struct dfu_status *dfu_stat_buf = NULL;
 375         u8 *dfu_state = NULL;
 376         u8 *block = NULL;
 377
 378         at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
 379                  manifest_sync_timeout);
 380
 381         if (!size) {
 382                 dev_err(&udev->dev, "FW buffer length invalid!\n");
 383                 return -EINVAL;
 384         }
 385
 386         dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL);
 387         if (!dfu_stat_buf) {
 388                 ret = -ENOMEM;
 389                 goto exit;
 390         }
 391
 392         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
 393         if (!block) {
 394                 ret = -ENOMEM;
 395                 goto exit;
 396         }
 397
 398         dfu_state = kmalloc(sizeof(u8), GFP_KERNEL);
 399         if (!dfu_state) {
 400                 ret = -ENOMEM;
 401                 goto exit;
 402         }
 403         *dfu_state = 0;
 404
 405         do {
 406                 if (need_dfu_state) {
 407                         ret = at76_dfu_get_state(udev, dfu_state);
 408                         if (ret < 0) {
 409                                 dev_err(&udev->dev,
 410                                         "cannot get DFU state: %d\n", ret);
 411                                 goto exit;
 412                         }
 413                         need_dfu_state = 0;
 414                 }
 415
 416                 switch (*dfu_state) {
 417                 case STATE_DFU_DOWNLOAD_SYNC:
 418                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
 419                         ret = at76_dfu_get_status(udev, dfu_stat_buf);
 420                         if (ret >= 0) {
 421                                 *dfu_state = dfu_stat_buf->state;
 422                                 dfu_timeout = at76_get_timeout(dfu_stat_buf);
 423                                 need_dfu_state = 0;
 424                         } else
 425                                 dev_err(&udev->dev,
 426                                         "at76_dfu_get_status returned %d\n",
 427                                         ret);
 428                         break;
 429
 430                 case STATE_DFU_DOWNLOAD_BUSY:
 431                         at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
 432                         need_dfu_state = 1;
 433
 434                         at76_dbg(DBG_DFU, "DFU: Resetting device");
 435                         schedule_timeout_interruptible(dfu_timeout);
 436                         break;
 437
 438                 case STATE_DFU_DOWNLOAD_IDLE:
 439                         at76_dbg(DBG_DFU, "DOWNLOAD...");
 440                         /* fall through */
 441                 case STATE_DFU_IDLE:
 442                         at76_dbg(DBG_DFU, "DFU IDLE");
 443
 444                         bsize = min_t(int, size, FW_BLOCK_SIZE);
 445                         memcpy(block, buf, bsize);
 446                         at76_dbg(DBG_DFU, "int fw, size left = %5d, "
 447                                  "bsize = %4d, blockno = %2d", size, bsize,
 448                                  blockno);
 449                         ret =
 450                             at76_load_int_fw_block(udev, blockno, block, bsize);
 451                         buf += bsize;
 452                         size -= bsize;
 453                         blockno++;
 454
 455                         if (ret != bsize)
 456                                 dev_err(&udev->dev,
 457                                         "at76_load_int_fw_block returned %d\n",
 458                                         ret);
 459                         need_dfu_state = 1;
 460                         break;
 461
 462                 case STATE_DFU_MANIFEST_SYNC:
 463                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
 464
 465                         ret = at76_dfu_get_status(udev, dfu_stat_buf);
 466                         if (ret < 0)
 467                                 break;
 468
 469                         *dfu_state = dfu_stat_buf->state;
 470                         dfu_timeout = at76_get_timeout(dfu_stat_buf);
 471                         need_dfu_state = 0;
 472
 473                         /* override the timeout from the status response,
 474                            needed for AT76C505A */
 475                         if (manifest_sync_timeout > 0)
 476                                 dfu_timeout = manifest_sync_timeout;
 477
 478                         at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
 479                         schedule_timeout_interruptible(dfu_timeout);
 480                         break;
 481
 482                 case STATE_DFU_MANIFEST:
 483                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
 484                         is_done = 1;
 485                         break;
 486
 487                 case STATE_DFU_MANIFEST_WAIT_RESET:
 488                         at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
 489                         is_done = 1;
 490                         break;
 491
 492                 case STATE_DFU_UPLOAD_IDLE:
 493                         at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
 494                         break;
 495
 496                 case STATE_DFU_ERROR:
 497                         at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
 498                         ret = -EPIPE;
 499                         break;
 500
 501                 default:
 502                         at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", *dfu_state);
 503                         ret = -EINVAL;
 504                         break;
 505                 }
 506         } while (!is_done && (ret >= 0));
 507
 508 exit:
 509         kfree(dfu_state);
 510         kfree(block);
 511         kfree(dfu_stat_buf);
 512
 513         if (ret >= 0)
 514                 ret = 0;
 515
 516         return ret;
 517 }
 518
 519 /* LED trigger */
 520 static int tx_activity;
 521 static void at76_ledtrig_tx_timerfunc(unsigned long data);
 522 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
 523 DEFINE_LED_TRIGGER(ledtrig_tx);
 524
 525 static void at76_ledtrig_tx_timerfunc(unsigned long data)
 526 {
 527         static int tx_lastactivity;
 528
 529         if (tx_lastactivity != tx_activity) {
 530                 tx_lastactivity = tx_activity;
 531                 led_trigger_event(ledtrig_tx, LED_FULL);
 532                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 533         } else
 534                 led_trigger_event(ledtrig_tx, LED_OFF);
 535 }
 536
 537 static void at76_ledtrig_tx_activity(void)
 538 {
 539         tx_activity++;
 540         if (!timer_pending(&ledtrig_tx_timer))
 541                 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 542 }
 543
 544 static int at76_remap(struct usb_device *udev)
 545 {
 546         int ret;
 547         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
 548                               USB_TYPE_VENDOR | USB_DIR_OUT |
 549                               USB_RECIP_INTERFACE, 0, 0, NULL, 0,
 550                               USB_CTRL_GET_TIMEOUT);
 551         if (ret < 0)
 552                 return ret;
 553         return 0;
 554 }
 555
 556 static int at76_get_op_mode(struct usb_device *udev)
 557 {
 558         int ret;
 559         u8 saved;
 560         u8 *op_mode;
 561
 562         op_mode = kmalloc(1, GFP_NOIO);
 563         if (!op_mode)
 564                 return -ENOMEM;
 565         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 566                               USB_TYPE_VENDOR | USB_DIR_IN |
 567                               USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
 568                               USB_CTRL_GET_TIMEOUT);
 569         saved = *op_mode;
 570         kfree(op_mode);
 571
 572         if (ret < 0)
 573                 return ret;
 574         else if (ret < 1)
 575                 return -EIO;
 576         else
 577                 return saved;
 578 }
 579
 580 /* Load a block of the second ("external") part of the firmware */
 581 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
 582                                          void *block, int size)
 583 {
 584         return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 585                                USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 586                                0x0802, blockno, block, size,
 587                                USB_CTRL_GET_TIMEOUT);
 588 }
 589
 590 static inline int at76_get_hw_cfg(struct usb_device *udev,
 591                                   union at76_hwcfg *buf, int buf_size)
 592 {
 593         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 594                                USB_TYPE_VENDOR | USB_DIR_IN |
 595                                USB_RECIP_INTERFACE, 0x0a02, 0,
 596                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 597 }
 598
 599 /* Intersil boards use a different "value" for GetHWConfig requests */
 600 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
 601                                            union at76_hwcfg *buf, int buf_size)
 602 {
 603         return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 604                                USB_TYPE_VENDOR | USB_DIR_IN |
 605                                USB_RECIP_INTERFACE, 0x0902, 0,
 606                                buf, buf_size, USB_CTRL_GET_TIMEOUT);
 607 }
 608
 609 /* Get the hardware configuration for the adapter and put it to the appropriate
 610  * fields of 'priv' (the GetHWConfig request and interpretation of the result
 611  * depends on the board type) */
 612 static int at76_get_hw_config(struct at76_priv *priv)
 613 {
 614         int ret;
 615         union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
 616
 617         if (!hwcfg)
 618                 return -ENOMEM;
 619
 620         if (at76_is_intersil(priv->board_type)) {
 621                 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
 622                                                sizeof(hwcfg->i));
 623                 if (ret < 0)
 624                         goto exit;
 625                 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
 626                 priv->regulatory_domain = hwcfg->i.regulatory_domain;
 627         } else if (at76_is_503rfmd(priv->board_type)) {
 628                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
 629                 if (ret < 0)
 630                         goto exit;
 631                 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
 632                 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
 633         } else {
 634                 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
 635                 if (ret < 0)
 636                         goto exit;
 637                 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
 638                 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
 639         }
 640
 641 exit:
 642         kfree(hwcfg);
 643         if (ret < 0)
 644                 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",
 645                           ret);
 646
 647         return ret;
 648 }
 649
 650 static struct reg_domain const *at76_get_reg_domain(u16 code)
 651 {
 652         int i;
 653         static struct reg_domain const fd_tab[] = {
 654                 { 0x10, "FCC (USA)", 0x7ff },   /* ch 1-11 */
 655                 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
 656                 { 0x30, "ETSI (most of Europe)", 0x1fff },      /* ch 1-13 */
 657                 { 0x31, "Spain", 0x600 },       /* ch 10-11 */
 658                 { 0x32, "France", 0x1e00 },     /* ch 10-13 */
 659                 { 0x40, "MKK (Japan)", 0x2000 },        /* ch 14 */
 660                 { 0x41, "MKK1 (Japan)", 0x3fff },       /* ch 1-14 */
 661                 { 0x50, "Israel", 0x3fc },      /* ch 3-9 */
 662                 { 0x00, "<unknown>", 0xffffffff }       /* ch 1-32 */
 663         };
 664
 665         /* Last entry is fallback for unknown domain code */
 666         for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
 667                 if (code == fd_tab[i].code)
 668                         break;
 669
 670         return &fd_tab[i];
 671 }
 672
 673 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
 674                                int buf_size)
 675 {
 676         int ret;
 677
 678         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 679                               USB_TYPE_VENDOR | USB_DIR_IN |
 680                               USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
 681                               USB_CTRL_GET_TIMEOUT);
 682         if (ret >= 0 && ret != buf_size)
 683                 return -EIO;
 684         return ret;
 685 }
 686
 687 /* Return positive number for status, negative for an error */
 688 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
 689 {
 690         u8 *stat_buf;
 691         int ret;
 692
 693         stat_buf = kmalloc(40, GFP_NOIO);
 694         if (!stat_buf)
 695                 return -ENOMEM;
 696
 697         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
 698                         USB_TYPE_VENDOR | USB_DIR_IN |
 699                         USB_RECIP_INTERFACE, cmd, 0, stat_buf,
 700                         40, USB_CTRL_GET_TIMEOUT);
 701         if (ret >= 0)
 702                 ret = stat_buf[5];
 703         kfree(stat_buf);
 704
 705         return ret;
 706 }
 707
 708 #define MAKE_CMD_CASE(c) case (c): return #c
 709 static const char *at76_get_cmd_string(u8 cmd_status)
 710 {
 711         switch (cmd_status) {
 712                 MAKE_CMD_CASE(CMD_SET_MIB);
 713                 MAKE_CMD_CASE(CMD_GET_MIB);
 714                 MAKE_CMD_CASE(CMD_SCAN);
 715                 MAKE_CMD_CASE(CMD_JOIN);
 716                 MAKE_CMD_CASE(CMD_START_IBSS);
 717                 MAKE_CMD_CASE(CMD_RADIO_ON);
 718                 MAKE_CMD_CASE(CMD_RADIO_OFF);
 719                 MAKE_CMD_CASE(CMD_STARTUP);
 720         }
 721
 722         return "UNKNOWN";
 723 }
 724
 725 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
 726                                  int buf_size)
 727 {
 728         int ret;
 729         struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
 730                                                buf_size, GFP_KERNEL);
 731
 732         if (!cmd_buf)
 733                 return -ENOMEM;
 734
 735         cmd_buf->cmd = cmd;
 736         cmd_buf->reserved = 0;
 737         cmd_buf->size = cpu_to_le16(buf_size);
 738         memcpy(cmd_buf->data, buf, buf_size);
 739
 740         at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
 741                       "issuing command %s (0x%02x)",
 742                       at76_get_cmd_string(cmd), cmd);
 743
 744         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 745                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 746                               0, 0, cmd_buf,
 747                               sizeof(struct at76_command) + buf_size,
 748                               USB_CTRL_GET_TIMEOUT);
 749         kfree(cmd_buf);
 750         return ret;
 751 }
 752
 753 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
 754 static const char *at76_get_cmd_status_string(u8 cmd_status)
 755 {
 756         switch (cmd_status) {
 757                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
 758                 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
 759                 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
 760                 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
 761                 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
 762                 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
 763                 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
 764                 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
 765                 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
 766         }
 767
 768         return "UNKNOWN";
 769 }
 770
 771 /* Wait until the command is completed */
 772 static int at76_wait_completion(struct at76_priv *priv, int cmd)
 773 {
 774         int status = 0;
 775         unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
 776
 777         do {
 778                 status = at76_get_cmd_status(priv->udev, cmd);
 779                 if (status < 0) {
 780                         wiphy_err(priv->hw->wiphy,
 781                                   "at76_get_cmd_status failed: %d\n",
 782                                   status);
 783                         break;
 784                 }
 785
 786                 at76_dbg(DBG_WAIT_COMPLETE,
 787                          "%s: Waiting on cmd %d, status = %d (%s)",
 788                          wiphy_name(priv->hw->wiphy), cmd, status,
 789                          at76_get_cmd_status_string(status));
 790
 791                 if (status != CMD_STATUS_IN_PROGRESS
 792                     && status != CMD_STATUS_IDLE)
 793                         break;
 794
 795                 schedule_timeout_interruptible(HZ / 10);        /* 100 ms */
 796                 if (time_after(jiffies, timeout)) {
 797                         wiphy_err(priv->hw->wiphy,
 798                                   "completion timeout for command %d\n", cmd);
 799                         status = -ETIMEDOUT;
 800                         break;
 801                 }
 802         } while (1);
 803
 804         return status;
 805 }
 806
 807 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
 808 {
 809         int ret;
 810
 811         ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
 812                                     offsetof(struct set_mib_buffer,
 813                                              data) + buf->size);
 814         if (ret < 0)
 815                 return ret;
 816
 817         ret = at76_wait_completion(priv, CMD_SET_MIB);
 818         if (ret != CMD_STATUS_COMPLETE) {
 819                 wiphy_info(priv->hw->wiphy,
 820                            "set_mib: at76_wait_completion failed with %d\n",
 821                            ret);
 822                 ret = -EIO;
 823         }
 824
 825         return ret;
 826 }
 827
 828 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
 829 static int at76_set_radio(struct at76_priv *priv, int enable)
 830 {
 831         int ret;
 832         int cmd;
 833
 834         if (priv->radio_on == enable)
 835                 return 0;
 836
 837         cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
 838
 839         ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
 840         if (ret < 0)
 841                 wiphy_err(priv->hw->wiphy,
 842                           "at76_set_card_command(%d) failed: %d\n", cmd, ret);
 843         else
 844                 ret = 1;
 845
 846         priv->radio_on = enable;
 847         return ret;
 848 }
 849
 850 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
 851 static int at76_set_pm_mode(struct at76_priv *priv)
 852 {
 853         int ret = 0;
 854
 855         priv->mib_buf.type = MIB_MAC_MGMT;
 856         priv->mib_buf.size = 1;
 857         priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
 858         priv->mib_buf.data.byte = priv->pm_mode;
 859
 860         ret = at76_set_mib(priv, &priv->mib_buf);
 861         if (ret < 0)
 862                 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
 863                           ret);
 864
 865         return ret;
 866 }
 867
 868 static int at76_set_preamble(struct at76_priv *priv, u8 type)
 869 {
 870         int ret = 0;
 871
 872         priv->mib_buf.type = MIB_LOCAL;
 873         priv->mib_buf.size = 1;
 874         priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
 875         priv->mib_buf.data.byte = type;
 876
 877         ret = at76_set_mib(priv, &priv->mib_buf);
 878         if (ret < 0)
 879                 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
 880                           ret);
 881
 882         return ret;
 883 }
 884
 885 static int at76_set_frag(struct at76_priv *priv, u16 size)
 886 {
 887         int ret = 0;
 888
 889         priv->mib_buf.type = MIB_MAC;
 890         priv->mib_buf.size = 2;
 891         priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
 892         priv->mib_buf.data.word = cpu_to_le16(size);
 893
 894         ret = at76_set_mib(priv, &priv->mib_buf);
 895         if (ret < 0)
 896                 wiphy_err(priv->hw->wiphy,
 897                           "set_mib (frag threshold) failed: %d\n", ret);
 898
 899         return ret;
 900 }
 901
 902 static int at76_set_rts(struct at76_priv *priv, u16 size)
 903 {
 904         int ret = 0;
 905
 906         priv->mib_buf.type = MIB_MAC;
 907         priv->mib_buf.size = 2;
 908         priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
 909         priv->mib_buf.data.word = cpu_to_le16(size);
 910
 911         ret = at76_set_mib(priv, &priv->mib_buf);
 912         if (ret < 0)
 913                 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
 914
 915         return ret;
 916 }
 917
 918 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
 919 {
 920         int ret = 0;
 921
 922         priv->mib_buf.type = MIB_LOCAL;
 923         priv->mib_buf.size = 1;
 924         priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
 925         priv->mib_buf.data.byte = onoff;
 926
 927         ret = at76_set_mib(priv, &priv->mib_buf);
 928         if (ret < 0)
 929                 wiphy_err(priv->hw->wiphy,
 930                           "set_mib (autorate fallback) failed: %d\n", ret);
 931
 932         return ret;
 933 }
 934
 935 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
 936 {
 937         int i;
 938         int ret;
 939         struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
 940                                          GFP_KERNEL);
 941
 942         if (!m)
 943                 return;
 944
 945         ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
 946                            sizeof(struct mib_mac_addr));
 947         if (ret < 0) {
 948                 wiphy_err(priv->hw->wiphy,
 949                           "at76_get_mib (MAC_ADDR) failed: %d\n", ret);
 950                 goto exit;
 951         }
 952
 953         at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
 954                  wiphy_name(priv->hw->wiphy),
 955                  m->mac_addr, m->res[0], m->res[1]);
 956         for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
 957                 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
 958                          "status %d", wiphy_name(priv->hw->wiphy), i,
 959                          m->group_addr[i], m->group_addr_status[i]);
 960 exit:
 961         kfree(m);
 962 }
 963
 964 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
 965 {
 966         int i;
 967         int ret;
 968         int key_len;
 969         struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
 970
 971         if (!m)
 972                 return;
 973
 974         ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
 975                            sizeof(struct mib_mac_wep));
 976         if (ret < 0) {
 977                 wiphy_err(priv->hw->wiphy,
 978                           "at76_get_mib (MAC_WEP) failed: %d\n", ret);
 979                 goto exit;
 980         }
 981
 982         at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
 983                  "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
 984                  "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
 985                  m->privacy_invoked, m->wep_default_key_id,
 986                  m->wep_key_mapping_len, m->exclude_unencrypted,
 987                  le32_to_cpu(m->wep_icv_error_count),
 988                  le32_to_cpu(m->wep_excluded_count), m->encryption_level,
 989                  m->wep_default_key_id);
 990
 991         key_len = (m->encryption_level == 1) ?
 992             WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
 993
 994         for (i = 0; i < WEP_KEYS; i++)
 995                 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD",
 996                          wiphy_name(priv->hw->wiphy), i,
 997                          key_len, m->wep_default_keyvalue[i]);
 998 exit:
 999         kfree(m);
1000 }
1001
1002 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1003 {
1004         int ret;
1005         struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1006                                          GFP_KERNEL);
1007
1008         if (!m)
1009                 return;
1010
1011         ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1012                            sizeof(struct mib_mac_mgmt));
1013         if (ret < 0) {
1014                 wiphy_err(priv->hw->wiphy,
1015                           "at76_get_mib (MAC_MGMT) failed: %d\n", ret);
1016                 goto exit;
1017         }
1018
1019         at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1020                  "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1021                  "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1022                  "current_bssid %pM current_essid %*phD current_bss_type %d "
1023                  "pm_mode %d ibss_change %d res %d "
1024                  "multi_domain_capability_implemented %d "
1025                  "international_roaming %d country_string %.3s",
1026                  wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1027                  le16_to_cpu(m->CFP_max_duration),
1028                  le16_to_cpu(m->medium_occupancy_limit),
1029                  le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1030                  m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1031                  m->CFP_period, m->current_bssid,
1032                  IW_ESSID_MAX_SIZE, m->current_essid,
1033                  m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1034                  m->res, m->multi_domain_capability_implemented,
1035                  m->multi_domain_capability_enabled, m->country_string);
1036 exit:
1037         kfree(m);
1038 }
1039
1040 static void at76_dump_mib_mac(struct at76_priv *priv)
1041 {
1042         int ret;
1043         struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1044
1045         if (!m)
1046                 return;
1047
1048         ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1049         if (ret < 0) {
1050                 wiphy_err(priv->hw->wiphy,
1051                           "at76_get_mib (MAC) failed: %d\n", ret);
1052                 goto exit;
1053         }
1054
1055         at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1056                  "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1057                  "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1058                  "scan_type %d scan_channel %d probe_delay %u "
1059                  "min_channel_time %d max_channel_time %d listen_int %d "
1060                  "desired_ssid %*phD desired_bssid %pM desired_bsstype %d",
1061                  wiphy_name(priv->hw->wiphy),
1062                  le32_to_cpu(m->max_tx_msdu_lifetime),
1063                  le32_to_cpu(m->max_rx_lifetime),
1064                  le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1065                  le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1066                  m->short_retry_time, m->long_retry_time, m->scan_type,
1067                  m->scan_channel, le16_to_cpu(m->probe_delay),
1068                  le16_to_cpu(m->min_channel_time),
1069                  le16_to_cpu(m->max_channel_time),
1070                  le16_to_cpu(m->listen_interval),
1071                  IW_ESSID_MAX_SIZE, m->desired_ssid,
1072                  m->desired_bssid, m->desired_bsstype);
1073 exit:
1074         kfree(m);
1075 }
1076
1077 static void at76_dump_mib_phy(struct at76_priv *priv)
1078 {
1079         int ret;
1080         struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1081
1082         if (!m)
1083                 return;
1084
1085         ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1086         if (ret < 0) {
1087                 wiphy_err(priv->hw->wiphy,
1088                           "at76_get_mib (PHY) failed: %d\n", ret);
1089                 goto exit;
1090         }
1091
1092         at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1093                  "sifs_time %d preamble_length %d plcp_header_length %d "
1094                  "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1095                  "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1096                  "phy_type %d current_reg_domain %d",
1097                  wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1098                  le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1099                  le16_to_cpu(m->preamble_length),
1100                  le16_to_cpu(m->plcp_header_length),
1101                  le16_to_cpu(m->mpdu_max_length),
1102                  le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1103                  m->operation_rate_set[1], m->operation_rate_set[2],
1104                  m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1105                  m->phy_type, m->current_reg_domain);
1106 exit:
1107         kfree(m);
1108 }
1109
1110 static void at76_dump_mib_local(struct at76_priv *priv)
1111 {
1112         int ret;
1113         struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL);
1114
1115         if (!m)
1116                 return;
1117
1118         ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m));
1119         if (ret < 0) {
1120                 wiphy_err(priv->hw->wiphy,
1121                           "at76_get_mib (LOCAL) failed: %d\n", ret);
1122                 goto exit;
1123         }
1124
1125         at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1126                  "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1127                  "preamble_type %d", wiphy_name(priv->hw->wiphy),
1128                  m->beacon_enable,
1129                  m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1130                  m->preamble_type);
1131 exit:
1132         kfree(m);
1133 }
1134
1135 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1136 {
1137         int ret;
1138         struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1139
1140         if (!m)
1141                 return;
1142
1143         ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1144                            sizeof(struct mib_mdomain));
1145         if (ret < 0) {
1146                 wiphy_err(priv->hw->wiphy,
1147                           "at76_get_mib (MDOMAIN) failed: %d\n", ret);
1148                 goto exit;
1149         }
1150
1151         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD",
1152                  wiphy_name(priv->hw->wiphy),
1153                  (int)sizeof(m->channel_list), m->channel_list);
1154
1155         at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD",
1156                  wiphy_name(priv->hw->wiphy),
1157                  (int)sizeof(m->tx_powerlevel), m->tx_powerlevel);
1158 exit:
1159         kfree(m);
1160 }
1161
1162 /* Enable monitor mode */
1163 static int at76_start_monitor(struct at76_priv *priv)
1164 {
1165         struct at76_req_scan scan;
1166         int ret;
1167
1168         memset(&scan, 0, sizeof(struct at76_req_scan));
1169         memset(scan.bssid, 0xff, ETH_ALEN);
1170
1171         scan.channel = priv->channel;
1172         scan.scan_type = SCAN_TYPE_PASSIVE;
1173         scan.international_scan = 0;
1174         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1175         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1176         scan.probe_delay = cpu_to_le16(0);
1177
1178         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1179         if (ret >= 0)
1180                 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1181
1182         return ret;
1183 }
1184
1185 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1186    likely to compensate a flaw in the AT76C503A USB part ... */
1187 static inline int at76_calc_padding(int wlen)
1188 {
1189         /* add the USB TX header */
1190         wlen += AT76_TX_HDRLEN;
1191
1192         wlen = wlen % 64;
1193
1194         if (wlen < 50)
1195                 return 50 - wlen;
1196
1197         if (wlen >= 61)
1198                 return 64 + 50 - wlen;
1199
1200         return 0;
1201 }
1202
1203 static void at76_rx_callback(struct urb *urb)
1204 {
1205         struct at76_priv *priv = urb->context;
1206
1207         priv->rx_tasklet.data = (unsigned long)urb;
1208         tasklet_schedule(&priv->rx_tasklet);
1209 }
1210
1211 static int at76_submit_rx_urb(struct at76_priv *priv)
1212 {
1213         int ret;
1214         int size;
1215         struct sk_buff *skb = priv->rx_skb;
1216
1217         if (!priv->rx_urb) {
1218                 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n",
1219                           __func__);
1220                 return -EFAULT;
1221         }
1222
1223         if (!skb) {
1224                 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1225                 if (!skb) {
1226                         wiphy_err(priv->hw->wiphy,
1227                                   "cannot allocate rx skbuff\n");
1228                         ret = -ENOMEM;
1229                         goto exit;
1230                 }
1231                 priv->rx_skb = skb;
1232         } else {
1233                 skb_push(skb, skb_headroom(skb));
1234                 skb_trim(skb, 0);
1235         }
1236
1237         size = skb_tailroom(skb);
1238         usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1239                           skb_put(skb, size), size, at76_rx_callback, priv);
1240         ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1241         if (ret < 0) {
1242                 if (ret == -ENODEV)
1243                         at76_dbg(DBG_DEVSTART,
1244                                  "usb_submit_urb returned -ENODEV");
1245                 else
1246                         wiphy_err(priv->hw->wiphy,
1247                                   "rx, usb_submit_urb failed: %d\n", ret);
1248         }
1249
1250 exit:
1251         if (ret < 0 && ret != -ENODEV)
1252                 wiphy_err(priv->hw->wiphy,
1253                           "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1254
1255         return ret;
1256 }
1257
1258 /* Download external firmware */
1259 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1260 {
1261         int ret;
1262         int op_mode;
1263         int blockno = 0;
1264         int bsize;
1265         u8 *block;
1266         u8 *buf = fwe->extfw;
1267         int size = fwe->extfw_size;
1268
1269         if (!buf || !size)
1270                 return -ENOENT;
1271
1272         op_mode = at76_get_op_mode(udev);
1273         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1274
1275         if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1276                 dev_err(&udev->dev, "unexpected opmode %d\n", op_mode);
1277                 return -EINVAL;
1278         }
1279
1280         block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1281         if (!block)
1282                 return -ENOMEM;
1283
1284         at76_dbg(DBG_DEVSTART, "downloading external firmware");
1285
1286         /* for fw >= 0.100, the device needs an extra empty block */
1287         do {
1288                 bsize = min_t(int, size, FW_BLOCK_SIZE);
1289                 memcpy(block, buf, bsize);
1290                 at76_dbg(DBG_DEVSTART,
1291                          "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1292                          size, bsize, blockno);
1293                 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1294                 if (ret != bsize) {
1295                         dev_err(&udev->dev,
1296                                 "loading %dth firmware block failed: %d\n",
1297                                 blockno, ret);
1298                         ret = -EIO;
1299                         goto exit;
1300                 }
1301                 buf += bsize;
1302                 size -= bsize;
1303                 blockno++;
1304         } while (bsize > 0);
1305
1306         if (at76_is_505a(fwe->board_type)) {
1307                 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1308                 schedule_timeout_interruptible(HZ / 5 + 1);
1309         }
1310
1311 exit:
1312         kfree(block);
1313         if (ret < 0)
1314                 dev_err(&udev->dev,
1315                         "downloading external firmware failed: %d\n", ret);
1316         return ret;
1317 }
1318
1319 /* Download internal firmware */
1320 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1321 {
1322         int ret;
1323         int need_remap = !at76_is_505a(fwe->board_type);
1324
1325         ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1326                                    need_remap ? 0 : 2 * HZ);
1327
1328         if (ret < 0) {
1329                 dev_err(&udev->dev,
1330                         "downloading internal fw failed with %d\n", ret);
1331                 goto exit;
1332         }
1333
1334         at76_dbg(DBG_DEVSTART, "sending REMAP");
1335
1336         /* no REMAP for 505A (see SF driver) */
1337         if (need_remap) {
1338                 ret = at76_remap(udev);
1339                 if (ret < 0) {
1340                         dev_err(&udev->dev,
1341                                 "sending REMAP failed with %d\n", ret);
1342                         goto exit;
1343                 }
1344         }
1345
1346         at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1347         schedule_timeout_interruptible(2 * HZ + 1);
1348         usb_reset_device(udev);
1349
1350 exit:
1351         return ret;
1352 }
1353
1354 static int at76_startup_device(struct at76_priv *priv)
1355 {
1356         struct at76_card_config *ccfg = &priv->card_config;
1357         int ret;
1358
1359         at76_dbg(DBG_PARAMS,
1360                  "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d "
1361                  "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1362                  priv->essid, IW_ESSID_MAX_SIZE, priv->essid,
1363                  priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1364                  priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1365                  priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1366         at76_dbg(DBG_PARAMS,
1367                  "%s param: preamble %s rts %d retry %d frag %d "
1368                  "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1369                  preambles[priv->preamble_type], priv->rts_threshold,
1370                  priv->short_retry_limit, priv->frag_threshold,
1371                  priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1372                  TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1373                  TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1374                  TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1375                  TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1376         at76_dbg(DBG_PARAMS,
1377                  "%s param: pm_mode %d pm_period %d auth_mode %s "
1378                  "scan_times %d %d scan_mode %s",
1379                  wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1380                  priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1381                  priv->scan_min_time, priv->scan_max_time,
1382                  priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1383
1384         memset(ccfg, 0, sizeof(struct at76_card_config));
1385         ccfg->promiscuous_mode = 0;
1386         ccfg->short_retry_limit = priv->short_retry_limit;
1387
1388         if (priv->wep_enabled) {
1389                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1390                         ccfg->encryption_type = 2;
1391                 else
1392                         ccfg->encryption_type = 1;
1393
1394                 /* jal: always exclude unencrypted if WEP is active */
1395                 ccfg->exclude_unencrypted = 1;
1396         } else {
1397                 ccfg->exclude_unencrypted = 0;
1398                 ccfg->encryption_type = 0;
1399         }
1400
1401         ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1402         ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1403
1404         memcpy(ccfg->basic_rate_set, hw_rates, 4);
1405         /* jal: really needed, we do a set_mib for autorate later ??? */
1406         ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1407         ccfg->channel = priv->channel;
1408         ccfg->privacy_invoked = priv->wep_enabled;
1409         memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1410         ccfg->ssid_len = priv->essid_size;
1411
1412         ccfg->wep_default_key_id = priv->wep_key_id;
1413         memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1414                sizeof(priv->wep_keys));
1415
1416         ccfg->short_preamble = priv->preamble_type;
1417         ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1418
1419         ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1420                                     sizeof(struct at76_card_config));
1421         if (ret < 0) {
1422                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1423                           ret);
1424                 return ret;
1425         }
1426
1427         at76_wait_completion(priv, CMD_STARTUP);
1428
1429         /* remove BSSID from previous run */
1430         memset(priv->bssid, 0, ETH_ALEN);
1431
1432         if (at76_set_radio(priv, 1) == 1)
1433                 at76_wait_completion(priv, CMD_RADIO_ON);
1434
1435         ret = at76_set_preamble(priv, priv->preamble_type);
1436         if (ret < 0)
1437                 return ret;
1438
1439         ret = at76_set_frag(priv, priv->frag_threshold);
1440         if (ret < 0)
1441                 return ret;
1442
1443         ret = at76_set_rts(priv, priv->rts_threshold);
1444         if (ret < 0)
1445                 return ret;
1446
1447         ret = at76_set_autorate_fallback(priv,
1448                                          priv->txrate == TX_RATE_AUTO ? 1 : 0);
1449         if (ret < 0)
1450                 return ret;
1451
1452         ret = at76_set_pm_mode(priv);
1453         if (ret < 0)
1454                 return ret;
1455
1456         if (at76_debug & DBG_MIB) {
1457                 at76_dump_mib_mac(priv);
1458                 at76_dump_mib_mac_addr(priv);
1459                 at76_dump_mib_mac_mgmt(priv);
1460                 at76_dump_mib_mac_wep(priv);
1461                 at76_dump_mib_mdomain(priv);
1462                 at76_dump_mib_phy(priv);
1463                 at76_dump_mib_local(priv);
1464         }
1465
1466         return 0;
1467 }
1468
1469 /* Enable or disable promiscuous mode */
1470 static void at76_work_set_promisc(struct work_struct *work)
1471 {
1472         struct at76_priv *priv = container_of(work, struct at76_priv,
1473                                               work_set_promisc);
1474         int ret = 0;
1475
1476         if (priv->device_unplugged)
1477                 return;
1478
1479         mutex_lock(&priv->mtx);
1480
1481         priv->mib_buf.type = MIB_LOCAL;
1482         priv->mib_buf.size = 1;
1483         priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1484         priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1485
1486         ret = at76_set_mib(priv, &priv->mib_buf);
1487         if (ret < 0)
1488                 wiphy_err(priv->hw->wiphy,
1489                           "set_mib (promiscuous_mode) failed: %d\n", ret);
1490
1491         mutex_unlock(&priv->mtx);
1492 }
1493
1494 /* Submit Rx urb back to the device */
1495 static void at76_work_submit_rx(struct work_struct *work)
1496 {
1497         struct at76_priv *priv = container_of(work, struct at76_priv,
1498                                               work_submit_rx);
1499
1500         mutex_lock(&priv->mtx);
1501         at76_submit_rx_urb(priv);
1502         mutex_unlock(&priv->mtx);
1503 }
1504
1505 static void at76_rx_tasklet(unsigned long param)
1506 {
1507         struct urb *urb = (struct urb *)param;
1508         struct at76_priv *priv = urb->context;
1509         struct at76_rx_buffer *buf;
1510         struct ieee80211_rx_status rx_status = { 0 };
1511
1512         if (priv->device_unplugged) {
1513                 at76_dbg(DBG_DEVSTART, "device unplugged");
1514                 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1515                 return;
1516         }
1517
1518         if (!priv->rx_skb || !priv->rx_skb->data)
1519                 return;
1520
1521         buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1522
1523         if (urb->status != 0) {
1524                 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1525                         at76_dbg(DBG_URB,
1526                                  "%s %s: - nonzero Rx bulk status received: %d",
1527                                  __func__, wiphy_name(priv->hw->wiphy),
1528                                  urb->status);
1529                 return;
1530         }
1531
1532         at76_dbg(DBG_RX_ATMEL_HDR,
1533                  "%s: rx frame: rate %d rssi %d noise %d link %d",
1534                  wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1535                  buf->noise_level, buf->link_quality);
1536
1537         skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1538         skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1539         at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1540                       priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1541
1542         rx_status.signal = buf->rssi;
1543         rx_status.flag |= RX_FLAG_DECRYPTED;
1544         rx_status.flag |= RX_FLAG_IV_STRIPPED;
1545
1546         at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1547                  priv->rx_skb->len, priv->rx_skb->data_len);
1548         memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1549         ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1550
1551         /* Use a new skb for the next receive */
1552         priv->rx_skb = NULL;
1553
1554         at76_submit_rx_urb(priv);
1555 }
1556
1557 /* Load firmware into kernel memory and parse it */
1558 static struct fwentry *at76_load_firmware(struct usb_device *udev,
1559                                           enum board_type board_type)
1560 {
1561         int ret;
1562         char *str;
1563         struct at76_fw_header *fwh;
1564         struct fwentry *fwe = &firmwares[board_type];
1565
1566         mutex_lock(&fw_mutex);
1567
1568         if (fwe->loaded) {
1569                 at76_dbg(DBG_FW, "re-using previously loaded fw");
1570                 goto exit;
1571         }
1572
1573         at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1574         ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1575         if (ret < 0) {
1576                 dev_err(&udev->dev, "firmware %s not found!\n",
1577                         fwe->fwname);
1578                 dev_err(&udev->dev,
1579                         "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n");
1580                 goto exit;
1581         }
1582
1583         at76_dbg(DBG_FW, "got it.");
1584         fwh = (struct at76_fw_header *)(fwe->fw->data);
1585
1586         if (fwe->fw->size <= sizeof(*fwh)) {
1587                 dev_err(&udev->dev,
1588                         "firmware is too short (0x%zx)\n", fwe->fw->size);
1589                 goto exit;
1590         }
1591
1592         /* CRC currently not checked */
1593         fwe->board_type = le32_to_cpu(fwh->board_type);
1594         if (fwe->board_type != board_type) {
1595                 dev_err(&udev->dev,
1596                         "board type mismatch, requested %u, got %u\n",
1597                         board_type, fwe->board_type);
1598                 goto exit;
1599         }
1600
1601         fwe->fw_version.major = fwh->major;
1602         fwe->fw_version.minor = fwh->minor;
1603         fwe->fw_version.patch = fwh->patch;
1604         fwe->fw_version.build = fwh->build;
1605
1606         str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1607         fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1608         fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1609         fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1610         fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1611
1612         fwe->loaded = 1;
1613
1614         dev_printk(KERN_DEBUG, &udev->dev,
1615                    "using firmware %s (version %d.%d.%d-%d)\n",
1616                    fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1617
1618         at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1619                  le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1620                  le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1621         at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1622
1623 exit:
1624         mutex_unlock(&fw_mutex);
1625
1626         if (fwe->loaded)
1627                 return fwe;
1628         else
1629                 return NULL;
1630 }
1631
1632 static int at76_join(struct at76_priv *priv)
1633 {
1634         struct at76_req_join join;
1635         int ret;
1636
1637         memset(&join, 0, sizeof(struct at76_req_join));
1638         memcpy(join.essid, priv->essid, priv->essid_size);
1639         join.essid_size = priv->essid_size;
1640         memcpy(join.bssid, priv->bssid, ETH_ALEN);
1641         join.bss_type = INFRASTRUCTURE_MODE;
1642         join.channel = priv->channel;
1643         join.timeout = cpu_to_le16(2000);
1644
1645         at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1646         ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1647                                     sizeof(struct at76_req_join));
1648
1649         if (ret < 0) {
1650                 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1651                           ret);
1652                 return 0;
1653         }
1654
1655         ret = at76_wait_completion(priv, CMD_JOIN);
1656         at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1657         if (ret != CMD_STATUS_COMPLETE) {
1658                 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1659                           ret);
1660                 return 0;
1661         }
1662
1663         at76_set_pm_mode(priv);
1664
1665         return 0;
1666 }
1667
1668 static void at76_work_join_bssid(struct work_struct *work)
1669 {
1670         struct at76_priv *priv = container_of(work, struct at76_priv,
1671                                               work_join_bssid);
1672
1673         if (priv->device_unplugged)
1674                 return;
1675
1676         mutex_lock(&priv->mtx);
1677
1678         if (is_valid_ether_addr(priv->bssid))
1679                 at76_join(priv);
1680
1681         mutex_unlock(&priv->mtx);
1682 }
1683
1684 static void at76_mac80211_tx_callback(struct urb *urb)
1685 {
1686         struct at76_priv *priv = urb->context;
1687         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1688
1689         at76_dbg(DBG_MAC80211, "%s()", __func__);
1690
1691         switch (urb->status) {
1692         case 0:
1693                 /* success */
1694                 info->flags |= IEEE80211_TX_STAT_ACK;
1695                 break;
1696         case -ENOENT:
1697         case -ECONNRESET:
1698                 /* fail, urb has been unlinked */
1699                 /* FIXME: add error message */
1700                 break;
1701         default:
1702                 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1703                          __func__, urb->status);
1704                 break;
1705         }
1706
1707         memset(&info->status, 0, sizeof(info->status));
1708
1709         ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1710
1711         priv->tx_skb = NULL;
1712
1713         ieee80211_wake_queues(priv->hw);
1714 }
1715
1716 static void at76_mac80211_tx(struct ieee80211_hw *hw,
1717                              struct ieee80211_tx_control *control,
1718                              struct sk_buff *skb)
1719 {
1720         struct at76_priv *priv = hw->priv;
1721         struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1722         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1723         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1724         int padding, submit_len, ret;
1725
1726         at76_dbg(DBG_MAC80211, "%s()", __func__);
1727
1728         if (priv->tx_urb->status == -EINPROGRESS) {
1729                 wiphy_err(priv->hw->wiphy,
1730                           "%s called while tx urb is pending\n", __func__);
1731                 dev_kfree_skb_any(skb);
1732                 return;
1733         }
1734
1735         /* The following code lines are important when the device is going to
1736          * authenticate with a new bssid. The driver must send CMD_JOIN before
1737          * an authentication frame is transmitted. For this to succeed, the
1738          * correct bssid of the AP must be known. As mac80211 does not inform
1739          * drivers about the bssid prior to the authentication process the
1740          * following workaround is necessary. If the TX frame is an
1741          * authentication frame extract the bssid and send the CMD_JOIN. */
1742         if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1743                 if (!ether_addr_equal_64bits(priv->bssid, mgmt->bssid)) {
1744                         memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1745                         ieee80211_queue_work(hw, &priv->work_join_bssid);
1746                         dev_kfree_skb_any(skb);
1747                         return;
1748                 }
1749         }
1750
1751         ieee80211_stop_queues(hw);
1752
1753         at76_ledtrig_tx_activity();     /* tell ledtrigger we send a packet */
1754
1755         WARN_ON(priv->tx_skb != NULL);
1756
1757         priv->tx_skb = skb;
1758         padding = at76_calc_padding(skb->len);
1759         submit_len = AT76_TX_HDRLEN + skb->len + padding;
1760
1761         /* setup 'Atmel' header */
1762         memset(tx_buffer, 0, sizeof(*tx_buffer));
1763         tx_buffer->padding = padding;
1764         tx_buffer->wlength = cpu_to_le16(skb->len);
1765         tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1766         memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1767         memcpy(tx_buffer->packet, skb->data, skb->len);
1768
1769         at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1770                  wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1771                  tx_buffer->padding, tx_buffer->tx_rate);
1772
1773         /* send stuff */
1774         at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1775                       "%s(): tx_buffer %d bytes:", __func__, submit_len);
1776         usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1777                           submit_len, at76_mac80211_tx_callback, priv);
1778         ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1779         if (ret) {
1780                 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1781                 if (ret == -EINVAL)
1782                         wiphy_err(priv->hw->wiphy,
1783                                   "-EINVAL: tx urb %p hcpriv %p complete %p\n",
1784                                   priv->tx_urb,
1785                                   priv->tx_urb->hcpriv, priv->tx_urb->complete);
1786         }
1787 }
1788
1789 static int at76_mac80211_start(struct ieee80211_hw *hw)
1790 {
1791         struct at76_priv *priv = hw->priv;
1792         int ret;
1793
1794         at76_dbg(DBG_MAC80211, "%s()", __func__);
1795
1796         mutex_lock(&priv->mtx);
1797
1798         ret = at76_submit_rx_urb(priv);
1799         if (ret < 0) {
1800                 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1801                           ret);
1802                 goto error;
1803         }
1804
1805         at76_startup_device(priv);
1806
1807         at76_start_monitor(priv);
1808
1809 error:
1810         mutex_unlock(&priv->mtx);
1811
1812         return 0;
1813 }
1814
1815 static void at76_mac80211_stop(struct ieee80211_hw *hw)
1816 {
1817         struct at76_priv *priv = hw->priv;
1818
1819         at76_dbg(DBG_MAC80211, "%s()", __func__);
1820
1821         cancel_delayed_work(&priv->dwork_hw_scan);
1822         cancel_work_sync(&priv->work_join_bssid);
1823         cancel_work_sync(&priv->work_set_promisc);
1824
1825         mutex_lock(&priv->mtx);
1826
1827         if (!priv->device_unplugged) {
1828                 /* We are called by "ifconfig ethX down", not because the
1829                  * device is not available anymore. */
1830                 at76_set_radio(priv, 0);
1831
1832                 /* We unlink rx_urb because at76_open() re-submits it.
1833                  * If unplugged, at76_delete_device() takes care of it. */
1834                 usb_kill_urb(priv->rx_urb);
1835         }
1836
1837         mutex_unlock(&priv->mtx);
1838 }
1839
1840 static int at76_add_interface(struct ieee80211_hw *hw,
1841                               struct ieee80211_vif *vif)
1842 {
1843         struct at76_priv *priv = hw->priv;
1844         int ret = 0;
1845
1846         at76_dbg(DBG_MAC80211, "%s()", __func__);
1847
1848         mutex_lock(&priv->mtx);
1849
1850         switch (vif->type) {
1851         case NL80211_IFTYPE_STATION:
1852                 priv->iw_mode = IW_MODE_INFRA;
1853                 break;
1854         default:
1855                 ret = -EOPNOTSUPP;
1856                 goto exit;
1857         }
1858
1859 exit:
1860         mutex_unlock(&priv->mtx);
1861
1862         return ret;
1863 }
1864
1865 static void at76_remove_interface(struct ieee80211_hw *hw,
1866                                   struct ieee80211_vif *vif)
1867 {
1868         at76_dbg(DBG_MAC80211, "%s()", __func__);
1869 }
1870
1871 static void at76_dwork_hw_scan(struct work_struct *work)
1872 {
1873         struct at76_priv *priv = container_of(work, struct at76_priv,
1874                                               dwork_hw_scan.work);
1875         int ret;
1876
1877         if (priv->device_unplugged)
1878                 return;
1879
1880         mutex_lock(&priv->mtx);
1881
1882         ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1883         at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1884
1885         /* FIXME: add maximum time for scan to complete */
1886
1887         if (ret != CMD_STATUS_COMPLETE) {
1888                 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1889                                              SCAN_POLL_INTERVAL);
1890                 mutex_unlock(&priv->mtx);
1891                 return;
1892         }
1893
1894         if (is_valid_ether_addr(priv->bssid))
1895                 at76_join(priv);
1896
1897         mutex_unlock(&priv->mtx);
1898
1899         ieee80211_scan_completed(priv->hw, false);
1900
1901         ieee80211_wake_queues(priv->hw);
1902 }
1903
1904 static int at76_hw_scan(struct ieee80211_hw *hw,
1905                         struct ieee80211_vif *vif,
1906                         struct cfg80211_scan_request *req)
1907 {
1908         struct at76_priv *priv = hw->priv;
1909         struct at76_req_scan scan;
1910         u8 *ssid = NULL;
1911         int ret, len = 0;
1912
1913         at76_dbg(DBG_MAC80211, "%s():", __func__);
1914
1915         if (priv->device_unplugged)
1916                 return 0;
1917
1918         mutex_lock(&priv->mtx);
1919
1920         ieee80211_stop_queues(hw);
1921
1922         memset(&scan, 0, sizeof(struct at76_req_scan));
1923         memset(scan.bssid, 0xFF, ETH_ALEN);
1924
1925         if (req->n_ssids) {
1926                 scan.scan_type = SCAN_TYPE_ACTIVE;
1927                 ssid = req->ssids[0].ssid;
1928                 len = req->ssids[0].ssid_len;
1929         } else {
1930                 scan.scan_type = SCAN_TYPE_PASSIVE;
1931         }
1932
1933         if (len) {
1934                 memcpy(scan.essid, ssid, len);
1935                 scan.essid_size = len;
1936         }
1937
1938         scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1939         scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1940         scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1941         scan.international_scan = 0;
1942
1943         at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1944         ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1945
1946         if (ret < 0) {
1947                 wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret);
1948                 goto exit;
1949         }
1950
1951         ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1952                                      SCAN_POLL_INTERVAL);
1953
1954 exit:
1955         mutex_unlock(&priv->mtx);
1956
1957         return 0;
1958 }
1959
1960 static int at76_config(struct ieee80211_hw *hw, u32 changed)
1961 {
1962         struct at76_priv *priv = hw->priv;
1963
1964         at76_dbg(DBG_MAC80211, "%s(): channel %d",
1965                  __func__, hw->conf.chandef.chan->hw_value);
1966         at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
1967
1968         mutex_lock(&priv->mtx);
1969
1970         priv->channel = hw->conf.chandef.chan->hw_value;
1971
1972         if (is_valid_ether_addr(priv->bssid))
1973                 at76_join(priv);
1974         else
1975                 at76_start_monitor(priv);
1976
1977         mutex_unlock(&priv->mtx);
1978
1979         return 0;
1980 }
1981
1982 static void at76_bss_info_changed(struct ieee80211_hw *hw,
1983                                   struct ieee80211_vif *vif,
1984                                   struct ieee80211_bss_conf *conf,
1985                                   u32 changed)
1986 {
1987         struct at76_priv *priv = hw->priv;
1988
1989         at76_dbg(DBG_MAC80211, "%s():", __func__);
1990
1991         if (!(changed & BSS_CHANGED_BSSID))
1992                 return;
1993
1994         at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
1995
1996         mutex_lock(&priv->mtx);
1997
1998         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1999
2000         if (is_valid_ether_addr(priv->bssid))
2001                 /* mac80211 is joining a bss */
2002                 at76_join(priv);
2003
2004         mutex_unlock(&priv->mtx);
2005 }
2006
2007 /* must be atomic */
2008 static void at76_configure_filter(struct ieee80211_hw *hw,
2009                                   unsigned int changed_flags,
2010                                   unsigned int *total_flags, u64 multicast)
2011 {
2012         struct at76_priv *priv = hw->priv;
2013         int flags;
2014
2015         at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2016                  "total_flags=0x%08x",
2017                  __func__, changed_flags, *total_flags);
2018
2019         flags = changed_flags & AT76_SUPPORTED_FILTERS;
2020         *total_flags = AT76_SUPPORTED_FILTERS;
2021
2022         /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2023         if (priv->device_unplugged)
2024                 return;
2025
2026         /* FIXME: access to priv->promisc should be protected with
2027          * priv->mtx, but it's impossible because this function needs to be
2028          * atomic */
2029
2030         if (flags && !priv->promisc) {
2031                 /* mac80211 wants us to enable promiscuous mode */
2032                 priv->promisc = 1;
2033         } else if (!flags && priv->promisc) {
2034                 /* we need to disable promiscuous mode */
2035                 priv->promisc = 0;
2036         } else
2037                 return;
2038
2039         ieee80211_queue_work(hw, &priv->work_set_promisc);
2040 }
2041
2042 static int at76_set_wep(struct at76_priv *priv)
2043 {
2044         int ret = 0;
2045         struct mib_mac_wep *mib_data = &priv->mib_buf.data.wep_mib;
2046
2047         priv->mib_buf.type = MIB_MAC_WEP;
2048         priv->mib_buf.size = sizeof(struct mib_mac_wep);
2049         priv->mib_buf.index = 0;
2050
2051         memset(mib_data, 0, sizeof(*mib_data));
2052
2053         if (priv->wep_enabled) {
2054                 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
2055                         mib_data->encryption_level = 2;
2056                 else
2057                         mib_data->encryption_level = 1;
2058
2059                 /* always exclude unencrypted if WEP is active */
2060                 mib_data->exclude_unencrypted = 1;
2061         } else {
2062                 mib_data->exclude_unencrypted = 0;
2063                 mib_data->encryption_level = 0;
2064         }
2065
2066         mib_data->privacy_invoked = priv->wep_enabled;
2067         mib_data->wep_default_key_id = priv->wep_key_id;
2068         memcpy(mib_data->wep_default_keyvalue, priv->wep_keys,
2069                sizeof(priv->wep_keys));
2070
2071         ret = at76_set_mib(priv, &priv->mib_buf);
2072
2073         if (ret < 0)
2074                 wiphy_err(priv->hw->wiphy,
2075                           "set_mib (wep) failed: %d\n", ret);
2076
2077         return ret;
2078 }
2079
2080 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2081                         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2082                         struct ieee80211_key_conf *key)
2083 {
2084         struct at76_priv *priv = hw->priv;
2085
2086         int i;
2087
2088         at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d "
2089                  "key->keylen %d",
2090                  __func__, cmd, key->cipher, key->keyidx, key->keylen);
2091
2092         if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) &&
2093             (key->cipher != WLAN_CIPHER_SUITE_WEP104))
2094                 return -EOPNOTSUPP;
2095
2096         key->hw_key_idx = key->keyidx;
2097
2098         mutex_lock(&priv->mtx);
2099
2100         switch (cmd) {
2101         case SET_KEY:
2102                 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2103                 priv->wep_keys_len[key->keyidx] = key->keylen;
2104
2105                 /* FIXME: find out how to do this properly */
2106                 priv->wep_key_id = key->keyidx;
2107
2108                 break;
2109         case DISABLE_KEY:
2110         default:
2111                 priv->wep_keys_len[key->keyidx] = 0;
2112                 break;
2113         }
2114
2115         priv->wep_enabled = 0;
2116
2117         for (i = 0; i < WEP_KEYS; i++) {
2118                 if (priv->wep_keys_len[i] != 0)
2119                         priv->wep_enabled = 1;
2120         }
2121
2122         at76_set_wep(priv);
2123
2124         mutex_unlock(&priv->mtx);
2125
2126         return 0;
2127 }
2128
2129 static const struct ieee80211_ops at76_ops = {
2130         .tx = at76_mac80211_tx,
2131         .add_interface = at76_add_interface,
2132         .remove_interface = at76_remove_interface,
2133         .config = at76_config,
2134         .bss_info_changed = at76_bss_info_changed,
2135         .configure_filter = at76_configure_filter,
2136         .start = at76_mac80211_start,
2137         .stop = at76_mac80211_stop,
2138         .hw_scan = at76_hw_scan,
2139         .set_key = at76_set_key,
2140 };
2141
2142 /* Allocate network device and initialize private data */
2143 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2144 {
2145         struct ieee80211_hw *hw;
2146         struct at76_priv *priv;
2147
2148         hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2149         if (!hw) {
2150                 printk(KERN_ERR DRIVER_NAME ": could not register"
2151                        " ieee80211_hw\n");
2152                 return NULL;
2153         }
2154
2155         priv = hw->priv;
2156         priv->hw = hw;
2157
2158         priv->udev = udev;
2159
2160         mutex_init(&priv->mtx);
2161         INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2162         INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2163         INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2164         INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2165
2166         tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0);
2167
2168         priv->pm_mode = AT76_PM_OFF;
2169         priv->pm_period = 0;
2170
2171         /* unit us */
2172
2173         return priv;
2174 }
2175
2176 static int at76_alloc_urbs(struct at76_priv *priv,
2177                            struct usb_interface *interface)
2178 {
2179         struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2180         int i;
2181         int buffer_size;
2182         struct usb_host_interface *iface_desc;
2183
2184         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2185
2186         at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2187                  interface->altsetting[0].desc.bNumEndpoints);
2188
2189         ep_in = NULL;
2190         ep_out = NULL;
2191         iface_desc = interface->cur_altsetting;
2192         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2193                 endpoint = &iface_desc->endpoint[i].desc;
2194
2195                 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2196                          __func__, i, endpoint->bEndpointAddress,
2197                          endpoint->bmAttributes);
2198
2199                 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2200                         ep_in = endpoint;
2201
2202                 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2203                         ep_out = endpoint;
2204         }
2205
2206         if (!ep_in || !ep_out) {
2207                 dev_err(&interface->dev, "bulk endpoints missing\n");
2208                 return -ENXIO;
2209         }
2210
2211         priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2212         priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2213
2214         priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2215         priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2216         if (!priv->rx_urb || !priv->tx_urb) {
2217                 dev_err(&interface->dev, "cannot allocate URB\n");
2218                 return -ENOMEM;
2219         }
2220
2221         buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2222         priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2223         if (!priv->bulk_out_buffer)
2224                 return -ENOMEM;
2225
2226         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2227
2228         return 0;
2229 }
2230
2231 static struct ieee80211_rate at76_rates[] = {
2232         { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2233         { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2234         { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2235         { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2236 };
2237
2238 static struct ieee80211_channel at76_channels[] = {
2239         { .center_freq = 2412, .hw_value = 1 },
2240         { .center_freq = 2417, .hw_value = 2 },
2241         { .center_freq = 2422, .hw_value = 3 },
2242         { .center_freq = 2427, .hw_value = 4 },
2243         { .center_freq = 2432, .hw_value = 5 },
2244         { .center_freq = 2437, .hw_value = 6 },
2245         { .center_freq = 2442, .hw_value = 7 },
2246         { .center_freq = 2447, .hw_value = 8 },
2247         { .center_freq = 2452, .hw_value = 9 },
2248         { .center_freq = 2457, .hw_value = 10 },
2249         { .center_freq = 2462, .hw_value = 11 },
2250         { .center_freq = 2467, .hw_value = 12 },
2251         { .center_freq = 2472, .hw_value = 13 },
2252         { .center_freq = 2484, .hw_value = 14 }
2253 };
2254
2255 static struct ieee80211_supported_band at76_supported_band = {
2256         .channels = at76_channels,
2257         .n_channels = ARRAY_SIZE(at76_channels),
2258         .bitrates = at76_rates,
2259         .n_bitrates = ARRAY_SIZE(at76_rates),
2260 };
2261
2262 /* Register network device and initialize the hardware */
2263 static int at76_init_new_device(struct at76_priv *priv,
2264                                 struct usb_interface *interface)
2265 {
2266         struct wiphy *wiphy;
2267         size_t len;
2268         int ret;
2269
2270         /* set up the endpoint information */
2271         /* check out the endpoints */
2272
2273         at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2274                  interface->cur_altsetting->desc.bNumEndpoints);
2275
2276         ret = at76_alloc_urbs(priv, interface);
2277         if (ret < 0)
2278                 goto exit;
2279
2280         /* MAC address */
2281         ret = at76_get_hw_config(priv);
2282         if (ret < 0) {
2283                 dev_err(&interface->dev, "cannot get MAC address\n");
2284                 goto exit;
2285         }
2286
2287         priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2288
2289         priv->channel = DEF_CHANNEL;
2290         priv->iw_mode = IW_MODE_INFRA;
2291         priv->rts_threshold = DEF_RTS_THRESHOLD;
2292         priv->frag_threshold = DEF_FRAG_THRESHOLD;
2293         priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2294         priv->txrate = TX_RATE_AUTO;
2295         priv->preamble_type = PREAMBLE_TYPE_LONG;
2296         priv->beacon_period = 100;
2297         priv->auth_mode = WLAN_AUTH_OPEN;
2298         priv->scan_min_time = DEF_SCAN_MIN_TIME;
2299         priv->scan_max_time = DEF_SCAN_MAX_TIME;
2300         priv->scan_mode = SCAN_TYPE_ACTIVE;
2301         priv->device_unplugged = 0;
2302
2303         /* mac80211 initialisation */
2304         wiphy = priv->hw->wiphy;
2305         priv->hw->wiphy->max_scan_ssids = 1;
2306         priv->hw->wiphy->max_scan_ie_len = 0;
2307         priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2308         priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band;
2309         priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2310                           IEEE80211_HW_SIGNAL_UNSPEC;
2311         priv->hw->max_signal = 100;
2312
2313         SET_IEEE80211_DEV(priv->hw, &interface->dev);
2314         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2315
2316         len = sizeof(wiphy->fw_version);
2317         snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2318                  priv->fw_version.major, priv->fw_version.minor,
2319                  priv->fw_version.patch, priv->fw_version.build);
2320
2321         wiphy->hw_version = priv->board_type;
2322
2323         ret = ieee80211_register_hw(priv->hw);
2324         if (ret) {
2325                 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2326                        ret);
2327                 goto exit;
2328         }
2329
2330         priv->mac80211_registered = 1;
2331
2332         wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2333                    dev_name(&interface->dev), priv->mac_addr,
2334                    priv->fw_version.major, priv->fw_version.minor,
2335                    priv->fw_version.patch, priv->fw_version.build);
2336         wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2337                    priv->regulatory_domain, priv->domain->name);
2338
2339 exit:
2340         return ret;
2341 }
2342
2343 static void at76_delete_device(struct at76_priv *priv)
2344 {
2345         at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2346
2347         /* The device is gone, don't bother turning it off */
2348         priv->device_unplugged = 1;
2349
2350         tasklet_kill(&priv->rx_tasklet);
2351
2352         if (priv->mac80211_registered)
2353                 ieee80211_unregister_hw(priv->hw);
2354
2355         if (priv->tx_urb) {
2356                 usb_kill_urb(priv->tx_urb);
2357                 usb_free_urb(priv->tx_urb);
2358         }
2359         if (priv->rx_urb) {
2360                 usb_kill_urb(priv->rx_urb);
2361                 usb_free_urb(priv->rx_urb);
2362         }
2363
2364         at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2365
2366         kfree(priv->bulk_out_buffer);
2367
2368         del_timer_sync(&ledtrig_tx_timer);
2369
2370         kfree_skb(priv->rx_skb);
2371
2372         usb_put_dev(priv->udev);
2373
2374         at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2375                  __func__);
2376         ieee80211_free_hw(priv->hw);
2377
2378         at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2379 }
2380
2381 static int at76_probe(struct usb_interface *interface,
2382                       const struct usb_device_id *id)
2383 {
2384         int ret;
2385         struct at76_priv *priv;
2386         struct fwentry *fwe;
2387         struct usb_device *udev;
2388         int op_mode;
2389         int need_ext_fw = 0;
2390         struct mib_fw_version *fwv = NULL;
2391         int board_type = (int)id->driver_info;
2392
2393         udev = usb_get_dev(interface_to_usbdev(interface));
2394
2395         fwv = kmalloc(sizeof(*fwv), GFP_KERNEL);
2396         if (!fwv) {
2397                 ret = -ENOMEM;
2398                 goto exit;
2399         }
2400
2401         /* Load firmware into kernel memory */
2402         fwe = at76_load_firmware(udev, board_type);
2403         if (!fwe) {
2404                 ret = -ENOENT;
2405                 goto exit;
2406         }
2407
2408         op_mode = at76_get_op_mode(udev);
2409
2410         at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2411
2412         /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2413            we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2414
2415         if (op_mode == OPMODE_HW_CONFIG_MODE) {
2416                 dev_err(&interface->dev,
2417                         "cannot handle a device in HW_CONFIG_MODE\n");
2418                 ret = -EBUSY;
2419                 goto exit;
2420         }
2421
2422         if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2423             && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2424                 /* download internal firmware part */
2425                 dev_printk(KERN_DEBUG, &interface->dev,
2426                            "downloading internal firmware\n");
2427                 ret = at76_load_internal_fw(udev, fwe);
2428                 if (ret < 0) {
2429                         dev_err(&interface->dev,
2430                                 "error %d downloading internal firmware\n",
2431                                 ret);
2432                         goto exit;
2433                 }
2434                 usb_put_dev(udev);
2435                 goto exit;
2436         }
2437
2438         /* Internal firmware already inside the device.  Get firmware
2439          * version to test if external firmware is loaded.
2440          * This works only for newer firmware, e.g. the Intersil 0.90.x
2441          * says "control timeout on ep0in" and subsequent
2442          * at76_get_op_mode() fail too :-( */
2443
2444         /* if version >= 0.100.x.y or device with built-in flash we can
2445          * query the device for the fw version */
2446         if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2447             || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2448                 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2449                 if (ret < 0 || (fwv->major | fwv->minor) == 0)
2450                         need_ext_fw = 1;
2451         } else
2452                 /* No way to check firmware version, reload to be sure */
2453                 need_ext_fw = 1;
2454
2455         if (need_ext_fw) {
2456                 dev_printk(KERN_DEBUG, &interface->dev,
2457                            "downloading external firmware\n");
2458
2459                 ret = at76_load_external_fw(udev, fwe);
2460                 if (ret < 0)
2461                         goto exit;
2462
2463                 /* Re-check firmware version */
2464                 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2465                 if (ret < 0) {
2466                         dev_err(&interface->dev,
2467                                 "error %d getting firmware version\n", ret);
2468                         goto exit;
2469                 }
2470         }
2471
2472         priv = at76_alloc_new_device(udev);
2473         if (!priv) {
2474                 ret = -ENOMEM;
2475                 goto exit;
2476         }
2477
2478         usb_set_intfdata(interface, priv);
2479
2480         memcpy(&priv->fw_version, fwv, sizeof(struct mib_fw_version));
2481         priv->board_type = board_type;
2482
2483         ret = at76_init_new_device(priv, interface);
2484         if (ret < 0)
2485                 at76_delete_device(priv);
2486
2487 exit:
2488         kfree(fwv);
2489         if (ret < 0)
2490                 usb_put_dev(udev);
2491         return ret;
2492 }
2493
2494 static void at76_disconnect(struct usb_interface *interface)
2495 {
2496         struct at76_priv *priv;
2497
2498         priv = usb_get_intfdata(interface);
2499         usb_set_intfdata(interface, NULL);
2500
2501         /* Disconnect after loading internal firmware */
2502         if (!priv)
2503                 return;
2504
2505         wiphy_info(priv->hw->wiphy, "disconnecting\n");
2506         at76_delete_device(priv);
2507         dev_info(&interface->dev, "disconnected\n");
2508 }
2509
2510 /* Structure for registering this driver with the USB subsystem */
2511 static struct usb_driver at76_driver = {
2512         .name = DRIVER_NAME,
2513         .probe = at76_probe,
2514         .disconnect = at76_disconnect,
2515         .id_table = dev_table,
2516         .disable_hub_initiated_lpm = 1,
2517 };
2518
2519 static int __init at76_mod_init(void)
2520 {
2521         int result;
2522
2523         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2524
2525         mutex_init(&fw_mutex);
2526
2527         /* register this driver with the USB subsystem */
2528         result = usb_register(&at76_driver);
2529         if (result < 0)
2530                 printk(KERN_ERR DRIVER_NAME
2531                        ": usb_register failed (status %d)\n", result);
2532
2533         led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2534         return result;
2535 }
2536
2537 static void __exit at76_mod_exit(void)
2538 {
2539         int i;
2540
2541         printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2542         usb_deregister(&at76_driver);
2543         for (i = 0; i < ARRAY_SIZE(firmwares); i++)
2544                 release_firmware(firmwares[i].fw);
2545         led_trigger_unregister_simple(ledtrig_tx);
2546 }
2547
2548 module_param_named(debug, at76_debug, uint, 0600);
2549 MODULE_PARM_DESC(debug, "Debugging level");
2550
2551 module_init(at76_mod_init);
2552 module_exit(at76_mod_exit);
2553
2554 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2555 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2556 MODULE_AUTHOR("Alex <alex@foogod.com>");
2557 MODULE_AUTHOR("Nick Jones");
2558 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2559 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2560 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2561 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2562 MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
2563 MODULE_DESCRIPTION(DRIVER_DESC);
2564 MODULE_LICENSE("GPL");