linux/drivers/net/wireless/atmel/at76c50x-usb.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * at76c503/at76c505 USB driver
   4 *
   5 * Copyright (c) 2002 - 2003 Oliver Kurth
   6 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
   7 * Copyright (c) 2004 Nick Jones
   8 * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
   9 * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
  10 * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi>
  11 * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net>
  12 *
  13 * This file is part of the Berlios driver for WLAN USB devices based on the
  14 * Atmel AT76C503A/505/505A.
  15 *
  16 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
  17 *
  18 * TODO list is at the wiki:
  19 *
  20 * https://wireless.wiki.kernel.org/en/users/Drivers/at76c50x-usb#TODO
  21 */
  22
  23#include <linux/init.h>
  24#include <linux/kernel.h>
  25#include <linux/sched.h>
  26#include <linux/errno.h>
  27#include <linux/slab.h>
  28#include <linux/module.h>
  29#include <linux/spinlock.h>
  30#include <linux/list.h>
  31#include <linux/usb.h>
  32#include <linux/netdevice.h>
  33#include <linux/if_arp.h>
  34#include <linux/etherdevice.h>
  35#include <linux/ethtool.h>
  36#include <linux/wireless.h>
  37#include <net/iw_handler.h>
  38#include <net/ieee80211_radiotap.h>
  39#include <linux/firmware.h>
  40#include <linux/leds.h>
  41#include <net/mac80211.h>
  42
  43#include "at76c50x-usb.h"
  44
  45/* Version information */
  46#define DRIVER_NAME "at76c50x-usb"
  47#define DRIVER_VERSION  "0.17"
  48#define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
  49
  50/* at76_debug bits */
  51#define DBG_PROGRESS            0x00000001      /* authentication/accociation */
  52#define DBG_BSS_TABLE           0x00000002      /* show BSS table after scans */
  53#define DBG_IOCTL               0x00000004      /* ioctl calls / settings */
  54#define DBG_MAC_STATE           0x00000008      /* MAC state transitions */
  55#define DBG_TX_DATA             0x00000010      /* tx header */
  56#define DBG_TX_DATA_CONTENT     0x00000020      /* tx content */
  57#define DBG_TX_MGMT             0x00000040      /* tx management */
  58#define DBG_RX_DATA             0x00000080      /* rx data header */
  59#define DBG_RX_DATA_CONTENT     0x00000100      /* rx data content */
  60#define DBG_RX_MGMT             0x00000200      /* rx mgmt frame headers */
  61#define DBG_RX_BEACON           0x00000400      /* rx beacon */
  62#define DBG_RX_CTRL             0x00000800      /* rx control */
  63#define DBG_RX_MGMT_CONTENT     0x00001000      /* rx mgmt content */
  64#define DBG_RX_FRAGS            0x00002000      /* rx data fragment handling */
  65#define DBG_DEVSTART            0x00004000      /* fw download, device start */
  66#define DBG_URB                 0x00008000      /* rx urb status, ... */
  67#define DBG_RX_ATMEL_HDR        0x00010000      /* Atmel-specific Rx headers */
  68#define DBG_PROC_ENTRY          0x00020000      /* procedure entries/exits */
  69#define DBG_PM                  0x00040000      /* power management settings */
  70#define DBG_BSS_MATCH           0x00080000      /* BSS match failures */
  71#define DBG_PARAMS              0x00100000      /* show configured parameters */
  72#define DBG_WAIT_COMPLETE       0x00200000      /* command completion */
  73#define DBG_RX_FRAGS_SKB        0x00400000      /* skb header of Rx fragments */
  74#define DBG_BSS_TABLE_RM        0x00800000      /* purging bss table entries */
  75#define DBG_MONITOR_MODE        0x01000000      /* monitor mode */
  76#define DBG_MIB                 0x02000000      /* dump all MIBs on startup */
  77#define DBG_MGMT_TIMER          0x04000000      /* dump mgmt_timer ops */
  78#define DBG_WE_EVENTS           0x08000000      /* dump wireless events */
  79#define DBG_FW                  0x10000000      /* firmware download */
  80#define DBG_DFU                 0x20000000      /* device firmware upgrade */
  81#define DBG_CMD                 0x40000000
  82#define DBG_MAC80211            0x80000000
  83
  84#define DBG_DEFAULTS            0
  85
  86/* Use our own dbg macro */
  87#define at76_dbg(bits, format, arg...)                                  \
  88do {                                                                    \
  89        if (at76_debug & (bits))                                        \
  90                printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
  91} while (0)
  92
  93#define at76_dbg_dump(bits, buf, len, format, arg...)                   \
  94do {                                                                    \
  95        if (at76_debug & (bits)) {                                      \
  96                printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \
  97                print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \
  98        }                                                               \
  99} while (0)
 100
 101static uint at76_debug = DBG_DEFAULTS;
 102
 103/* Protect against concurrent firmware loading and parsing */
 104static DEFINE_MUTEX(fw_mutex);
 105
 106static struct fwentry firmwares[] = {
 107        [0] = { "" },
 108        [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },
 109        [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },
 110        [BOARD_503] = { "atmel_at76c503-rfmd.bin" },
 111        [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },
 112        [BOARD_505] = { "atmel_at76c505-rfmd.bin" },
 113        [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },
 114        [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },
 115        [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },
 116};
 117MODULE_FIRMWARE("atmel_at76c503-i3861.bin");
 118MODULE_FIRMWARE("atmel_at76c503-i3863.bin");
 119MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");
 120MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");
 121MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");
 122MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");
 123MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");
 124MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");
 125
 126#define USB_DEVICE_DATA(__ops)  .driver_info = (kernel_ulong_t)(__ops)
 127
 128static const struct usb_device_id dev_table[] = {
 129        /*
 130         * at76c503-i3861
 131         */
 132        /* Generic AT76C503/3861 device */
 133        { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 134        /* Linksys WUSB11 v2.1/v2.6 */
 135        { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 136        /* Netgear MA101 rev. A */
 137        { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 138        /* Tekram U300C / Allnet ALL0193 */
 139        { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 140        /* HP HN210W J7801A */
 141        { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 142        /* Sitecom/Z-Com/Zyxel M4Y-750 */
 143        { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 144        /* Dynalink/Askey WLL013 (intersil) */
 145        { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 146        /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
 147        { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 148        /* BenQ AWL300 */
 149        { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 150        /* Addtron AWU-120, Compex WLU11 */
 151        { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 152        /* Intel AP310 AnyPoint II USB */
 153        { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 154        /* Dynalink L11U */
 155        { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 156        /* Arescom WL-210, FCC id 07J-GL2411USB */
 157        { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 158        /* I-O DATA WN-B11/USB */
 159        { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 160        /* BT Voyager 1010 */
 161        { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) },
 162        /*
 163         * at76c503-i3863
 164         */
 165        /* Generic AT76C503/3863 device */
 166        { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 167        /* Samsung SWL-2100U */
 168        { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) },
 169        /*
 170         * at76c503-rfmd
 171         */
 172        /* Generic AT76C503/RFMD device */
 173        { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 174        /* Dynalink/Askey WLL013 (rfmd) */
 175        { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) },
 176        /* Linksys WUSB11 v2.6 */
 177        { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) },
 178        /* Network Everywhere NWU11B */
 179        { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) },
 180        /* Netgear MA101 rev. B */
 181        { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 182        /* D-Link DWL-120 rev. E */
 183        { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) },
 184        /* Actiontec 802UAT1, HWU01150-01UK */
 185        { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) },
 186        /* AirVast W-Buddie WN210 */
 187        { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) },
 188        /* Dick Smith Electronics XH1153 802.11b USB adapter */
 189        { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) },
 190        /* CNet CNUSB611 */
 191        { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) },
 192        /* FiberLine FL-WL200U */
 193        { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) },
 194        /* BenQ AWL400 USB stick */
 195        { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) },
 196        /* 3Com 3CRSHEW696 */
 197        { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) },
 198        /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
 199        { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) },
 200        /* Belkin F5D6050, version 2 */
 201        { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) },
 202        /* iBlitzz, BWU613 (not *B or *SB) */
 203        { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) },
 204        /* Gigabyte GN-WLBM101 */
 205        { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) },
 206        /* Planex GW-US11S */
 207        { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) },
 208        /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
 209        { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) },
 210        /* Corega Wireless LAN USB-11 mini */
 211        { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) },
 212        /* Corega Wireless LAN USB-11 mini2 */
 213        { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) },
 214        /* Uniden PCW100 */
 215        { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) },
 216        /*
 217         * at76c503-rfmd-acc
 218         */
 219        /* SMC2664W */
 220        { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) },
 221        /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
 222        { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) },
 223        /*
 224         * at76c505-rfmd
 225         */
 226        /* Generic AT76C505/RFMD */
 227        { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },
 228        /*
 229         * at76c505-rfmd2958
 230         */
 231        /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
 232        { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 233        /* Fiberline FL-WL240U */
 234        { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) },
 235        /* CNet CNUSB-611G */
 236        { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) },
 237        /* Linksys WUSB11 v2.8 */
 238        { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) },
 239        /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
 240        { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) },
 241        /* Corega WLAN USB Stick 11 */
 242        { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) },
 243        /* Microstar MSI Box MS6978 */
 244        { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) },
 245        /*
 246         * at76c505a-rfmd2958
 247         */
 248        /* Generic AT76C505A device */
 249        { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) },
 250        /* Generic AT76C505AS device */
 251        { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) },
 252        /* Siemens Gigaset USB WLAN Adapter 11 */
 253        { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) },
 254        /* OQO Model 01+ Internal Wi-Fi */
 255        { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) },
 256        /*
 257         * at76c505amx-rfmd
 258         */
 259        /* Generic AT76C505AMX device */
 260        { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },
 261        { }
 262};
 263
 264MODULE_DEVICE_TABLE(usb, dev_table);
 265
 266/* Supported rates of this hardware, bit 7 marks basic rates */
 267static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
 268
 269static const char *const preambles[] = { "long", "short", "auto" };
 270
 271/* Firmware download */
 272/* DFU states */
 273#define STATE_IDLE                      0x00
 274#define STATE_DETACH                    0x01
 275#define STATE_DFU_IDLE                  0x02
 276#define STATE_DFU_DOWNLOAD_SYNC         0x03
 277#define STATE_DFU_DOWNLOAD_BUSY         0x04
 278#define STATE_DFU_DOWNLOAD_IDLE         0x05
 279#define STATE_DFU_MANIFEST_SYNC         0x06
 280#define STATE_DFU_MANIFEST              0x07
 281#define STATE_DFU_MANIFEST_WAIT_RESET   0x08
 282#define STATE_DFU_UPLOAD_IDLE           0x09
 283#define STATE_DFU_ERROR                 0x0a
 284
 285/* DFU commands */
 286#define DFU_DETACH                      0
 287#define DFU_DNLOAD                      1
 288#define DFU_UPLOAD                      2
 289#define DFU_GETSTATUS                   3
 290#define DFU_CLRSTATUS                   4
 291#define DFU_GETSTATE                    5
 292#define DFU_ABORT                       6
 293
 294#define FW_BLOCK_SIZE 1024
 295
 296struct dfu_status {
 297        unsigned char status;
 298        unsigned char poll_timeout[3];
 299        unsigned char state;
 300        unsigned char string;
 301} __packed;
 302
 303static inline int at76_is_intersil(enum board_type board)
 304{
 305        return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
 306}
 307
 308static inline int at76_is_503rfmd(enum board_type board)
 309{
 310        return (board == BOARD_503 || board == BOARD_503_ACC);
 311}
 312
 313static inline int at76_is_505a(enum board_type board)
 314{
 315        return (board == BOARD_505A || board == BOARD_505AMX);
 316}
 317
 318/* Load a block of the first (internal) part of the firmware */
 319static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
 320                                  void *block, int size)
 321{
 322        return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
 323                               USB_TYPE_CLASS | USB_DIR_OUT |
 324                               USB_RECIP_INTERFACE, blockno, 0, block, size,
 325                               USB_CTRL_GET_TIMEOUT);
 326}
 327
 328static int at76_dfu_get_status(struct usb_device *udev,
 329                               struct dfu_status *status)
 330{
 331        int ret;
 332
 333        ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
 334                              USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 335                              0, 0, status, sizeof(struct dfu_status),
 336                              USB_CTRL_GET_TIMEOUT);
 337        return ret;
 338}
 339
 340static int at76_dfu_get_state(struct usb_device *udev, u8 *state)
 341{
 342        int ret;
 343
 344        ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
 345                              USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
 346                              0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
 347        return ret;
 348}
 349
 350/* Convert timeout from the DFU status to jiffies */
 351static inline unsigned long at76_get_timeout(struct dfu_status *s)
 352{
 353        return msecs_to_jiffies((s->poll_timeout[2] << 16)
 354                                | (s->poll_timeout[1] << 8)
 355                                | (s->poll_timeout[0]));
 356}
 357
 358/* Load internal firmware from the buffer.  If manifest_sync_timeout > 0, use
 359 * its value in jiffies in the MANIFEST_SYNC state.  */
 360static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
 361                                int manifest_sync_timeout)
 362{
 363        int ret = 0;
 364        int need_dfu_state = 1;
 365        int is_done = 0;
 366        u32 dfu_timeout = 0;
 367        int bsize = 0;
 368        int blockno = 0;
 369        struct dfu_status *dfu_stat_buf = NULL;
 370        u8 *dfu_state = NULL;
 371        u8 *block = NULL;
 372
 373        at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
 374                 manifest_sync_timeout);
 375
 376        if (!size) {
 377                dev_err(&udev->dev, "FW buffer length invalid!\n");
 378                return -EINVAL;
 379        }
 380
 381        dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL);
 382        if (!dfu_stat_buf) {
 383                ret = -ENOMEM;
 384                goto exit;
 385        }
 386
 387        block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
 388        if (!block) {
 389                ret = -ENOMEM;
 390                goto exit;
 391        }
 392
 393        dfu_state = kmalloc(sizeof(u8), GFP_KERNEL);
 394        if (!dfu_state) {
 395                ret = -ENOMEM;
 396                goto exit;
 397        }
 398        *dfu_state = 0;
 399
 400        do {
 401                if (need_dfu_state) {
 402                        ret = at76_dfu_get_state(udev, dfu_state);
 403                        if (ret < 0) {
 404                                dev_err(&udev->dev,
 405                                        "cannot get DFU state: %d\n", ret);
 406                                goto exit;
 407                        }
 408                        need_dfu_state = 0;
 409                }
 410
 411                switch (*dfu_state) {
 412                case STATE_DFU_DOWNLOAD_SYNC:
 413                        at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
 414                        ret = at76_dfu_get_status(udev, dfu_stat_buf);
 415                        if (ret >= 0) {
 416                                *dfu_state = dfu_stat_buf->state;
 417                                dfu_timeout = at76_get_timeout(dfu_stat_buf);
 418                                need_dfu_state = 0;
 419                        } else
 420                                dev_err(&udev->dev,
 421                                        "at76_dfu_get_status returned %d\n",
 422                                        ret);
 423                        break;
 424
 425                case STATE_DFU_DOWNLOAD_BUSY:
 426                        at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
 427                        need_dfu_state = 1;
 428
 429                        at76_dbg(DBG_DFU, "DFU: Resetting device");
 430                        schedule_timeout_interruptible(dfu_timeout);
 431                        break;
 432
 433                case STATE_DFU_DOWNLOAD_IDLE:
 434                        at76_dbg(DBG_DFU, "DOWNLOAD...");
 435                        fallthrough;
 436                case STATE_DFU_IDLE:
 437                        at76_dbg(DBG_DFU, "DFU IDLE");
 438
 439                        bsize = min_t(int, size, FW_BLOCK_SIZE);
 440                        memcpy(block, buf, bsize);
 441                        at76_dbg(DBG_DFU, "int fw, size left = %5d, "
 442                                 "bsize = %4d, blockno = %2d", size, bsize,
 443                                 blockno);
 444                        ret =
 445                            at76_load_int_fw_block(udev, blockno, block, bsize);
 446                        buf += bsize;
 447                        size -= bsize;
 448                        blockno++;
 449
 450                        if (ret != bsize)
 451                                dev_err(&udev->dev,
 452                                        "at76_load_int_fw_block returned %d\n",
 453                                        ret);
 454                        need_dfu_state = 1;
 455                        break;
 456
 457                case STATE_DFU_MANIFEST_SYNC:
 458                        at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
 459
 460                        ret = at76_dfu_get_status(udev, dfu_stat_buf);
 461                        if (ret < 0)
 462                                break;
 463
 464                        *dfu_state = dfu_stat_buf->state;
 465                        dfu_timeout = at76_get_timeout(dfu_stat_buf);
 466                        need_dfu_state = 0;
 467
 468                        /* override the timeout from the status response,
 469                           needed for AT76C505A */
 470                        if (manifest_sync_timeout > 0)
 471                                dfu_timeout = manifest_sync_timeout;
 472
 473                        at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
 474                        schedule_timeout_interruptible(dfu_timeout);
 475                        break;
 476
 477                case STATE_DFU_MANIFEST:
 478                        at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
 479                        is_done = 1;
 480                        break;
 481
 482                case STATE_DFU_MANIFEST_WAIT_RESET:
 483                        at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
 484                        is_done = 1;
 485                        break;
 486
 487                case STATE_DFU_UPLOAD_IDLE:
 488                        at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
 489                        break;
 490
 491                case STATE_DFU_ERROR:
 492                        at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
 493                        ret = -EPIPE;
 494                        break;
 495
 496                default:
 497                        at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", *dfu_state);
 498                        ret = -EINVAL;
 499                        break;
 500                }
 501        } while (!is_done && (ret >= 0));
 502
 503exit:
 504        kfree(dfu_state);
 505        kfree(block);
 506        kfree(dfu_stat_buf);
 507
 508        if (ret >= 0)
 509                ret = 0;
 510
 511        return ret;
 512}
 513
 514/* LED trigger */
 515static int tx_activity;
 516static void at76_ledtrig_tx_timerfunc(struct timer_list *unused);
 517static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc);
 518DEFINE_LED_TRIGGER(ledtrig_tx);
 519
 520static void at76_ledtrig_tx_timerfunc(struct timer_list *unused)
 521{
 522        static int tx_lastactivity;
 523
 524        if (tx_lastactivity != tx_activity) {
 525                tx_lastactivity = tx_activity;
 526                led_trigger_event(ledtrig_tx, LED_FULL);
 527                mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 528        } else
 529                led_trigger_event(ledtrig_tx, LED_OFF);
 530}
 531
 532static void at76_ledtrig_tx_activity(void)
 533{
 534        tx_activity++;
 535        if (!timer_pending(&ledtrig_tx_timer))
 536                mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
 537}
 538
 539static int at76_remap(struct usb_device *udev)
 540{
 541        int ret;
 542        ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
 543                              USB_TYPE_VENDOR | USB_DIR_OUT |
 544                              USB_RECIP_INTERFACE, 0, 0, NULL, 0,
 545                              USB_CTRL_GET_TIMEOUT);
 546        if (ret < 0)
 547                return ret;
 548        return 0;
 549}
 550
 551static int at76_get_op_mode(struct usb_device *udev)
 552{
 553        int ret;
 554        u8 saved;
 555        u8 *op_mode;
 556
 557        op_mode = kmalloc(1, GFP_NOIO);
 558        if (!op_mode)
 559                return -ENOMEM;
 560        ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 561                              USB_TYPE_VENDOR | USB_DIR_IN |
 562                              USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
 563                              USB_CTRL_GET_TIMEOUT);
 564        saved = *op_mode;
 565        kfree(op_mode);
 566
 567        if (ret < 0)
 568                return ret;
 569        else if (ret < 1)
 570                return -EIO;
 571        else
 572                return saved;
 573}
 574
 575/* Load a block of the second ("external") part of the firmware */
 576static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
 577                                         void *block, int size)
 578{
 579        return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 580                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 581                               0x0802, blockno, block, size,
 582                               USB_CTRL_GET_TIMEOUT);
 583}
 584
 585static inline int at76_get_hw_cfg(struct usb_device *udev,
 586                                  union at76_hwcfg *buf, int buf_size)
 587{
 588        return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 589                               USB_TYPE_VENDOR | USB_DIR_IN |
 590                               USB_RECIP_INTERFACE, 0x0a02, 0,
 591                               buf, buf_size, USB_CTRL_GET_TIMEOUT);
 592}
 593
 594/* Intersil boards use a different "value" for GetHWConfig requests */
 595static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
 596                                           union at76_hwcfg *buf, int buf_size)
 597{
 598        return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 599                               USB_TYPE_VENDOR | USB_DIR_IN |
 600                               USB_RECIP_INTERFACE, 0x0902, 0,
 601                               buf, buf_size, USB_CTRL_GET_TIMEOUT);
 602}
 603
 604/* Get the hardware configuration for the adapter and put it to the appropriate
 605 * fields of 'priv' (the GetHWConfig request and interpretation of the result
 606 * depends on the board type) */
 607static int at76_get_hw_config(struct at76_priv *priv)
 608{
 609        int ret;
 610        union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
 611
 612        if (!hwcfg)
 613                return -ENOMEM;
 614
 615        if (at76_is_intersil(priv->board_type)) {
 616                ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
 617                                               sizeof(hwcfg->i));
 618                if (ret < 0)
 619                        goto exit;
 620                memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
 621                priv->regulatory_domain = hwcfg->i.regulatory_domain;
 622        } else if (at76_is_503rfmd(priv->board_type)) {
 623                ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
 624                if (ret < 0)
 625                        goto exit;
 626                memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
 627                priv->regulatory_domain = hwcfg->r3.regulatory_domain;
 628        } else {
 629                ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
 630                if (ret < 0)
 631                        goto exit;
 632                memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
 633                priv->regulatory_domain = hwcfg->r5.regulatory_domain;
 634        }
 635
 636exit:
 637        kfree(hwcfg);
 638        if (ret < 0)
 639                wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",
 640                          ret);
 641
 642        return ret;
 643}
 644
 645static struct reg_domain const *at76_get_reg_domain(u16 code)
 646{
 647        int i;
 648        static struct reg_domain const fd_tab[] = {
 649                { 0x10, "FCC (USA)", 0x7ff },   /* ch 1-11 */
 650                { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */
 651                { 0x30, "ETSI (most of Europe)", 0x1fff },      /* ch 1-13 */
 652                { 0x31, "Spain", 0x600 },       /* ch 10-11 */
 653                { 0x32, "France", 0x1e00 },     /* ch 10-13 */
 654                { 0x40, "MKK (Japan)", 0x2000 },        /* ch 14 */
 655                { 0x41, "MKK1 (Japan)", 0x3fff },       /* ch 1-14 */
 656                { 0x50, "Israel", 0x3fc },      /* ch 3-9 */
 657                { 0x00, "<unknown>", 0xffffffff }       /* ch 1-32 */
 658        };
 659
 660        /* Last entry is fallback for unknown domain code */
 661        for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
 662                if (code == fd_tab[i].code)
 663                        break;
 664
 665        return &fd_tab[i];
 666}
 667
 668static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
 669                               int buf_size)
 670{
 671        int ret;
 672
 673        ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
 674                              USB_TYPE_VENDOR | USB_DIR_IN |
 675                              USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
 676                              USB_CTRL_GET_TIMEOUT);
 677        if (ret >= 0 && ret != buf_size)
 678                return -EIO;
 679        return ret;
 680}
 681
 682/* Return positive number for status, negative for an error */
 683static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
 684{
 685        u8 *stat_buf;
 686        int ret;
 687
 688        stat_buf = kmalloc(40, GFP_NOIO);
 689        if (!stat_buf)
 690                return -ENOMEM;
 691
 692        ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
 693                        USB_TYPE_VENDOR | USB_DIR_IN |
 694                        USB_RECIP_INTERFACE, cmd, 0, stat_buf,
 695                        40, USB_CTRL_GET_TIMEOUT);
 696        if (ret >= 0)
 697                ret = stat_buf[5];
 698        kfree(stat_buf);
 699
 700        return ret;
 701}
 702
 703#define MAKE_CMD_CASE(c) case (c): return #c
 704static const char *at76_get_cmd_string(u8 cmd_status)
 705{
 706        switch (cmd_status) {
 707                MAKE_CMD_CASE(CMD_SET_MIB);
 708                MAKE_CMD_CASE(CMD_GET_MIB);
 709                MAKE_CMD_CASE(CMD_SCAN);
 710                MAKE_CMD_CASE(CMD_JOIN);
 711                MAKE_CMD_CASE(CMD_START_IBSS);
 712                MAKE_CMD_CASE(CMD_RADIO_ON);
 713                MAKE_CMD_CASE(CMD_RADIO_OFF);
 714                MAKE_CMD_CASE(CMD_STARTUP);
 715        }
 716
 717        return "UNKNOWN";
 718}
 719
 720static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
 721                                 int buf_size)
 722{
 723        int ret;
 724        struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
 725                                               buf_size, GFP_KERNEL);
 726
 727        if (!cmd_buf)
 728                return -ENOMEM;
 729
 730        cmd_buf->cmd = cmd;
 731        cmd_buf->reserved = 0;
 732        cmd_buf->size = cpu_to_le16(buf_size);
 733        memcpy(cmd_buf->data, buf, buf_size);
 734
 735        at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size,
 736                      "issuing command %s (0x%02x)",
 737                      at76_get_cmd_string(cmd), cmd);
 738
 739        ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
 740                              USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
 741                              0, 0, cmd_buf,
 742                              sizeof(struct at76_command) + buf_size,
 743                              USB_CTRL_GET_TIMEOUT);
 744        kfree(cmd_buf);
 745        return ret;
 746}
 747
 748#define MAKE_CMD_STATUS_CASE(c) case (c): return #c
 749static const char *at76_get_cmd_status_string(u8 cmd_status)
 750{
 751        switch (cmd_status) {
 752                MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
 753                MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
 754                MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
 755                MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
 756                MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
 757                MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
 758                MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
 759                MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
 760                MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
 761        }
 762
 763        return "UNKNOWN";
 764}
 765
 766/* Wait until the command is completed */
 767static int at76_wait_completion(struct at76_priv *priv, int cmd)
 768{
 769        int status = 0;
 770        unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
 771
 772        do {
 773                status = at76_get_cmd_status(priv->udev, cmd);
 774                if (status < 0) {
 775                        wiphy_err(priv->hw->wiphy,
 776                                  "at76_get_cmd_status failed: %d\n",
 777                                  status);
 778                        break;
 779                }
 780
 781                at76_dbg(DBG_WAIT_COMPLETE,
 782                         "%s: Waiting on cmd %d, status = %d (%s)",
 783                         wiphy_name(priv->hw->wiphy), cmd, status,
 784                         at76_get_cmd_status_string(status));
 785
 786                if (status != CMD_STATUS_IN_PROGRESS
 787                    && status != CMD_STATUS_IDLE)
 788                        break;
 789
 790                schedule_timeout_interruptible(HZ / 10);        /* 100 ms */
 791                if (time_after(jiffies, timeout)) {
 792                        wiphy_err(priv->hw->wiphy,
 793                                  "completion timeout for command %d\n", cmd);
 794                        status = -ETIMEDOUT;
 795                        break;
 796                }
 797        } while (1);
 798
 799        return status;
 800}
 801
 802static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
 803{
 804        int ret;
 805
 806        ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
 807                                    offsetof(struct set_mib_buffer,
 808                                             data) + buf->size);
 809        if (ret < 0)
 810                return ret;
 811
 812        ret = at76_wait_completion(priv, CMD_SET_MIB);
 813        if (ret != CMD_STATUS_COMPLETE) {
 814                wiphy_info(priv->hw->wiphy,
 815                           "set_mib: at76_wait_completion failed with %d\n",
 816                           ret);
 817                ret = -EIO;
 818        }
 819
 820        return ret;
 821}
 822
 823/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
 824static int at76_set_radio(struct at76_priv *priv, int enable)
 825{
 826        int ret;
 827        int cmd;
 828
 829        if (priv->radio_on == enable)
 830                return 0;
 831
 832        cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
 833
 834        ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
 835        if (ret < 0)
 836                wiphy_err(priv->hw->wiphy,
 837                          "at76_set_card_command(%d) failed: %d\n", cmd, ret);
 838        else
 839                ret = 1;
 840
 841        priv->radio_on = enable;
 842        return ret;
 843}
 844
 845/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
 846static int at76_set_pm_mode(struct at76_priv *priv)
 847{
 848        int ret = 0;
 849
 850        priv->mib_buf.type = MIB_MAC_MGMT;
 851        priv->mib_buf.size = 1;
 852        priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
 853        priv->mib_buf.data.byte = priv->pm_mode;
 854
 855        ret = at76_set_mib(priv, &priv->mib_buf);
 856        if (ret < 0)
 857                wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",
 858                          ret);
 859
 860        return ret;
 861}
 862
 863static int at76_set_preamble(struct at76_priv *priv, u8 type)
 864{
 865        int ret = 0;
 866
 867        priv->mib_buf.type = MIB_LOCAL;
 868        priv->mib_buf.size = 1;
 869        priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
 870        priv->mib_buf.data.byte = type;
 871
 872        ret = at76_set_mib(priv, &priv->mib_buf);
 873        if (ret < 0)
 874                wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",
 875                          ret);
 876
 877        return ret;
 878}
 879
 880static int at76_set_frag(struct at76_priv *priv, u16 size)
 881{
 882        int ret = 0;
 883
 884        priv->mib_buf.type = MIB_MAC;
 885        priv->mib_buf.size = 2;
 886        priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
 887        priv->mib_buf.data.word = cpu_to_le16(size);
 888
 889        ret = at76_set_mib(priv, &priv->mib_buf);
 890        if (ret < 0)
 891                wiphy_err(priv->hw->wiphy,
 892                          "set_mib (frag threshold) failed: %d\n", ret);
 893
 894        return ret;
 895}
 896
 897static int at76_set_rts(struct at76_priv *priv, u16 size)
 898{
 899        int ret = 0;
 900
 901        priv->mib_buf.type = MIB_MAC;
 902        priv->mib_buf.size = 2;
 903        priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
 904        priv->mib_buf.data.word = cpu_to_le16(size);
 905
 906        ret = at76_set_mib(priv, &priv->mib_buf);
 907        if (ret < 0)
 908                wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);
 909
 910        return ret;
 911}
 912
 913static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
 914{
 915        int ret = 0;
 916
 917        priv->mib_buf.type = MIB_LOCAL;
 918        priv->mib_buf.size = 1;
 919        priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
 920        priv->mib_buf.data.byte = onoff;
 921
 922        ret = at76_set_mib(priv, &priv->mib_buf);
 923        if (ret < 0)
 924                wiphy_err(priv->hw->wiphy,
 925                          "set_mib (autorate fallback) failed: %d\n", ret);
 926
 927        return ret;
 928}
 929
 930static void at76_dump_mib_mac_addr(struct at76_priv *priv)
 931{
 932        int i;
 933        int ret;
 934        struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
 935                                         GFP_KERNEL);
 936
 937        if (!m)
 938                return;
 939
 940        ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
 941                           sizeof(struct mib_mac_addr));
 942        if (ret < 0) {
 943                wiphy_err(priv->hw->wiphy,
 944                          "at76_get_mib (MAC_ADDR) failed: %d\n", ret);
 945                goto exit;
 946        }
 947
 948        at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
 949                 wiphy_name(priv->hw->wiphy),
 950                 m->mac_addr, m->res[0], m->res[1]);
 951        for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
 952                at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
 953                         "status %d", wiphy_name(priv->hw->wiphy), i,
 954                         m->group_addr[i], m->group_addr_status[i]);
 955exit:
 956        kfree(m);
 957}
 958
 959static void at76_dump_mib_mac_wep(struct at76_priv *priv)
 960{
 961        int i;
 962        int ret;
 963        int key_len;
 964        struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
 965
 966        if (!m)
 967                return;
 968
 969        ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
 970                           sizeof(struct mib_mac_wep));
 971        if (ret < 0) {
 972                wiphy_err(priv->hw->wiphy,
 973                          "at76_get_mib (MAC_WEP) failed: %d\n", ret);
 974                goto exit;
 975        }
 976
 977        at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
 978                 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
 979                 "encr_level %u key %d", wiphy_name(priv->hw->wiphy),
 980                 m->privacy_invoked, m->wep_default_key_id,
 981                 m->wep_key_mapping_len, m->exclude_unencrypted,
 982                 le32_to_cpu(m->wep_icv_error_count),
 983                 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
 984                 m->wep_default_key_id);
 985
 986        key_len = (m->encryption_level == 1) ?
 987            WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
 988
 989        for (i = 0; i < WEP_KEYS; i++)
 990                at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD",
 991                         wiphy_name(priv->hw->wiphy), i,
 992                         key_len, m->wep_default_keyvalue[i]);
 993exit:
 994        kfree(m);
 995}
 996
 997static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
 998{
 999        int ret;
1000        struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1001                                         GFP_KERNEL);
1002
1003        if (!m)
1004                return;
1005
1006        ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1007                           sizeof(struct mib_mac_mgmt));
1008        if (ret < 0) {
1009                wiphy_err(priv->hw->wiphy,
1010                          "at76_get_mib (MAC_MGMT) failed: %d\n", ret);
1011                goto exit;
1012        }
1013
1014        at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1015                 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1016                 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1017                 "current_bssid %pM current_essid %*phD current_bss_type %d "
1018                 "pm_mode %d ibss_change %d res %d "
1019                 "multi_domain_capability_implemented %d "
1020                 "international_roaming %d country_string %.3s",
1021                 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period),
1022                 le16_to_cpu(m->CFP_max_duration),
1023                 le16_to_cpu(m->medium_occupancy_limit),
1024                 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1025                 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1026                 m->CFP_period, m->current_bssid,
1027                 IW_ESSID_MAX_SIZE, m->current_essid,
1028                 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1029                 m->res, m->multi_domain_capability_implemented,
1030                 m->multi_domain_capability_enabled, m->country_string);
1031exit:
1032        kfree(m);
1033}
1034
1035static void at76_dump_mib_mac(struct at76_priv *priv)
1036{
1037        int ret;
1038        struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1039
1040        if (!m)
1041                return;
1042
1043        ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1044        if (ret < 0) {
1045                wiphy_err(priv->hw->wiphy,
1046                          "at76_get_mib (MAC) failed: %d\n", ret);
1047                goto exit;
1048        }
1049
1050        at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1051                 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1052                 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1053                 "scan_type %d scan_channel %d probe_delay %u "
1054                 "min_channel_time %d max_channel_time %d listen_int %d "
1055                 "desired_ssid %*phD desired_bssid %pM desired_bsstype %d",
1056                 wiphy_name(priv->hw->wiphy),
1057                 le32_to_cpu(m->max_tx_msdu_lifetime),
1058                 le32_to_cpu(m->max_rx_lifetime),
1059                 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1060                 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1061                 m->short_retry_time, m->long_retry_time, m->scan_type,
1062                 m->scan_channel, le16_to_cpu(m->probe_delay),
1063                 le16_to_cpu(m->min_channel_time),
1064                 le16_to_cpu(m->max_channel_time),
1065                 le16_to_cpu(m->listen_interval),
1066                 IW_ESSID_MAX_SIZE, m->desired_ssid,
1067                 m->desired_bssid, m->desired_bsstype);
1068exit:
1069        kfree(m);
1070}
1071
1072static void at76_dump_mib_phy(struct at76_priv *priv)
1073{
1074        int ret;
1075        struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1076
1077        if (!m)
1078                return;
1079
1080        ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1081        if (ret < 0) {
1082                wiphy_err(priv->hw->wiphy,
1083                          "at76_get_mib (PHY) failed: %d\n", ret);
1084                goto exit;
1085        }
1086
1087        at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1088                 "sifs_time %d preamble_length %d plcp_header_length %d "
1089                 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1090                 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1091                 "phy_type %d current_reg_domain %d",
1092                 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold),
1093                 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1094                 le16_to_cpu(m->preamble_length),
1095                 le16_to_cpu(m->plcp_header_length),
1096                 le16_to_cpu(m->mpdu_max_length),
1097                 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1098                 m->operation_rate_set[1], m->operation_rate_set[2],
1099                 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1100                 m->phy_type, m->current_reg_domain);
1101exit:
1102        kfree(m);
1103}
1104
1105static void at76_dump_mib_local(struct at76_priv *priv)
1106{
1107        int ret;
1108        struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL);
1109
1110        if (!m)
1111                return;
1112
1113        ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m));
1114        if (ret < 0) {
1115                wiphy_err(priv->hw->wiphy,
1116                          "at76_get_mib (LOCAL) failed: %d\n", ret);
1117                goto exit;
1118        }
1119
1120        at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1121                 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1122                 "preamble_type %d", wiphy_name(priv->hw->wiphy),
1123                 m->beacon_enable,
1124                 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1125                 m->preamble_type);
1126exit:
1127        kfree(m);
1128}
1129
1130static void at76_dump_mib_mdomain(struct at76_priv *priv)
1131{
1132        int ret;
1133        struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1134
1135        if (!m)
1136                return;
1137
1138        ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1139                           sizeof(struct mib_mdomain));
1140        if (ret < 0) {
1141                wiphy_err(priv->hw->wiphy,
1142                          "at76_get_mib (MDOMAIN) failed: %d\n", ret);
1143                goto exit;
1144        }
1145
1146        at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD",
1147                 wiphy_name(priv->hw->wiphy),
1148                 (int)sizeof(m->channel_list), m->channel_list);
1149
1150        at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD",
1151                 wiphy_name(priv->hw->wiphy),
1152                 (int)sizeof(m->tx_powerlevel), m->tx_powerlevel);
1153exit:
1154        kfree(m);
1155}
1156
1157/* Enable monitor mode */
1158static int at76_start_monitor(struct at76_priv *priv)
1159{
1160        struct at76_req_scan scan;
1161        int ret;
1162
1163        memset(&scan, 0, sizeof(struct at76_req_scan));
1164        eth_broadcast_addr(scan.bssid);
1165
1166        scan.channel = priv->channel;
1167        scan.scan_type = SCAN_TYPE_PASSIVE;
1168        scan.international_scan = 0;
1169        scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1170        scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1171        scan.probe_delay = cpu_to_le16(0);
1172
1173        ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1174        if (ret >= 0)
1175                ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1176
1177        return ret;
1178}
1179
1180/* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1181   likely to compensate a flaw in the AT76C503A USB part ... */
1182static inline int at76_calc_padding(int wlen)
1183{
1184        /* add the USB TX header */
1185        wlen += AT76_TX_HDRLEN;
1186
1187        wlen = wlen % 64;
1188
1189        if (wlen < 50)
1190                return 50 - wlen;
1191
1192        if (wlen >= 61)
1193                return 64 + 50 - wlen;
1194
1195        return 0;
1196}
1197
1198static void at76_rx_callback(struct urb *urb)
1199{
1200        struct at76_priv *priv = urb->context;
1201
1202        tasklet_schedule(&priv->rx_tasklet);
1203}
1204
1205static int at76_submit_rx_urb(struct at76_priv *priv)
1206{
1207        int ret;
1208        int size;
1209        struct sk_buff *skb = priv->rx_skb;
1210
1211        if (!priv->rx_urb) {
1212                wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n",
1213                          __func__);
1214                return -EFAULT;
1215        }
1216
1217        if (!skb) {
1218                skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
1219                if (!skb) {
1220                        wiphy_err(priv->hw->wiphy,
1221                                  "cannot allocate rx skbuff\n");
1222                        ret = -ENOMEM;
1223                        goto exit;
1224                }
1225                priv->rx_skb = skb;
1226        } else {
1227                skb_push(skb, skb_headroom(skb));
1228                skb_trim(skb, 0);
1229        }
1230
1231        size = skb_tailroom(skb);
1232        usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
1233                          skb_put(skb, size), size, at76_rx_callback, priv);
1234        ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
1235        if (ret < 0) {
1236                if (ret == -ENODEV)
1237                        at76_dbg(DBG_DEVSTART,
1238                                 "usb_submit_urb returned -ENODEV");
1239                else
1240                        wiphy_err(priv->hw->wiphy,
1241                                  "rx, usb_submit_urb failed: %d\n", ret);
1242        }
1243
1244exit:
1245        if (ret < 0 && ret != -ENODEV)
1246                wiphy_err(priv->hw->wiphy,
1247                          "cannot submit rx urb - please unload the driver and/or power cycle the device\n");
1248
1249        return ret;
1250}
1251
1252/* Download external firmware */
1253static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
1254{
1255        int ret;
1256        int op_mode;
1257        int blockno = 0;
1258        int bsize;
1259        u8 *block;
1260        u8 *buf = fwe->extfw;
1261        int size = fwe->extfw_size;
1262
1263        if (!buf || !size)
1264                return -ENOENT;
1265
1266        op_mode = at76_get_op_mode(udev);
1267        at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
1268
1269        if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
1270                dev_err(&udev->dev, "unexpected opmode %d\n", op_mode);
1271                return -EINVAL;
1272        }
1273
1274        block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
1275        if (!block)
1276                return -ENOMEM;
1277
1278        at76_dbg(DBG_DEVSTART, "downloading external firmware");
1279
1280        /* for fw >= 0.100, the device needs an extra empty block */
1281        do {
1282                bsize = min_t(int, size, FW_BLOCK_SIZE);
1283                memcpy(block, buf, bsize);
1284                at76_dbg(DBG_DEVSTART,
1285                         "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
1286                         size, bsize, blockno);
1287                ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
1288                if (ret != bsize) {
1289                        dev_err(&udev->dev,
1290                                "loading %dth firmware block failed: %d\n",
1291                                blockno, ret);
1292                        ret = -EIO;
1293                        goto exit;
1294                }
1295                buf += bsize;
1296                size -= bsize;
1297                blockno++;
1298        } while (bsize > 0);
1299
1300        if (at76_is_505a(fwe->board_type)) {
1301                at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
1302                schedule_timeout_interruptible(HZ / 5 + 1);
1303        }
1304
1305exit:
1306        kfree(block);
1307        if (ret < 0)
1308                dev_err(&udev->dev,
1309                        "downloading external firmware failed: %d\n", ret);
1310        return ret;
1311}
1312
1313/* Download internal firmware */
1314static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
1315{
1316        int ret;
1317        int need_remap = !at76_is_505a(fwe->board_type);
1318
1319        ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
1320                                   need_remap ? 0 : 2 * HZ);
1321
1322        if (ret < 0) {
1323                dev_err(&udev->dev,
1324                        "downloading internal fw failed with %d\n", ret);
1325                goto exit;
1326        }
1327
1328        at76_dbg(DBG_DEVSTART, "sending REMAP");
1329
1330        /* no REMAP for 505A (see SF driver) */
1331        if (need_remap) {
1332                ret = at76_remap(udev);
1333                if (ret < 0) {
1334                        dev_err(&udev->dev,
1335                                "sending REMAP failed with %d\n", ret);
1336                        goto exit;
1337                }
1338        }
1339
1340        at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
1341        schedule_timeout_interruptible(2 * HZ + 1);
1342        usb_reset_device(udev);
1343
1344exit:
1345        return ret;
1346}
1347
1348static int at76_startup_device(struct at76_priv *priv)
1349{
1350        struct at76_card_config *ccfg = &priv->card_config;
1351        int ret;
1352
1353        at76_dbg(DBG_PARAMS,
1354                 "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d "
1355                 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size,
1356                 priv->essid, IW_ESSID_MAX_SIZE, priv->essid,
1357                 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
1358                 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
1359                 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
1360        at76_dbg(DBG_PARAMS,
1361                 "%s param: preamble %s rts %d retry %d frag %d "
1362                 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy),
1363                 preambles[priv->preamble_type], priv->rts_threshold,
1364                 priv->short_retry_limit, priv->frag_threshold,
1365                 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
1366                 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
1367                 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
1368                 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
1369                 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
1370        at76_dbg(DBG_PARAMS,
1371                 "%s param: pm_mode %d pm_period %d auth_mode %s "
1372                 "scan_times %d %d scan_mode %s",
1373                 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period,
1374                 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
1375                 priv->scan_min_time, priv->scan_max_time,
1376                 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
1377
1378        memset(ccfg, 0, sizeof(struct at76_card_config));
1379        ccfg->promiscuous_mode = 0;
1380        ccfg->short_retry_limit = priv->short_retry_limit;
1381
1382        if (priv->wep_enabled) {
1383                if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
1384                        ccfg->encryption_type = 2;
1385                else
1386                        ccfg->encryption_type = 1;
1387
1388                /* jal: always exclude unencrypted if WEP is active */
1389                ccfg->exclude_unencrypted = 1;
1390        } else {
1391                ccfg->exclude_unencrypted = 0;
1392                ccfg->encryption_type = 0;
1393        }
1394
1395        ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
1396        ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
1397
1398        memcpy(ccfg->basic_rate_set, hw_rates, 4);
1399        /* jal: really needed, we do a set_mib for autorate later ??? */
1400        ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
1401        ccfg->channel = priv->channel;
1402        ccfg->privacy_invoked = priv->wep_enabled;
1403        memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
1404        ccfg->ssid_len = priv->essid_size;
1405
1406        ccfg->wep_default_key_id = priv->wep_key_id;
1407        memcpy(ccfg->wep_default_key_value, priv->wep_keys,
1408               sizeof(priv->wep_keys));
1409
1410        ccfg->short_preamble = priv->preamble_type;
1411        ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
1412
1413        ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
1414                                    sizeof(struct at76_card_config));
1415        if (ret < 0) {
1416                wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1417                          ret);
1418                return ret;
1419        }
1420
1421        at76_wait_completion(priv, CMD_STARTUP);
1422
1423        /* remove BSSID from previous run */
1424        eth_zero_addr(priv->bssid);
1425
1426        priv->scanning = false;
1427
1428        if (at76_set_radio(priv, 1) == 1)
1429                at76_wait_completion(priv, CMD_RADIO_ON);
1430
1431        ret = at76_set_preamble(priv, priv->preamble_type);
1432        if (ret < 0)
1433                return ret;
1434
1435        ret = at76_set_frag(priv, priv->frag_threshold);
1436        if (ret < 0)
1437                return ret;
1438
1439        ret = at76_set_rts(priv, priv->rts_threshold);
1440        if (ret < 0)
1441                return ret;
1442
1443        ret = at76_set_autorate_fallback(priv,
1444                                         priv->txrate == TX_RATE_AUTO ? 1 : 0);
1445        if (ret < 0)
1446                return ret;
1447
1448        ret = at76_set_pm_mode(priv);
1449        if (ret < 0)
1450                return ret;
1451
1452        if (at76_debug & DBG_MIB) {
1453                at76_dump_mib_mac(priv);
1454                at76_dump_mib_mac_addr(priv);
1455                at76_dump_mib_mac_mgmt(priv);
1456                at76_dump_mib_mac_wep(priv);
1457                at76_dump_mib_mdomain(priv);
1458                at76_dump_mib_phy(priv);
1459                at76_dump_mib_local(priv);
1460        }
1461
1462        return 0;
1463}
1464
1465/* Enable or disable promiscuous mode */
1466static void at76_work_set_promisc(struct work_struct *work)
1467{
1468        struct at76_priv *priv = container_of(work, struct at76_priv,
1469                                              work_set_promisc);
1470        int ret = 0;
1471
1472        if (priv->device_unplugged)
1473                return;
1474
1475        mutex_lock(&priv->mtx);
1476
1477        priv->mib_buf.type = MIB_LOCAL;
1478        priv->mib_buf.size = 1;
1479        priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
1480        priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
1481
1482        ret = at76_set_mib(priv, &priv->mib_buf);
1483        if (ret < 0)
1484                wiphy_err(priv->hw->wiphy,
1485                          "set_mib (promiscuous_mode) failed: %d\n", ret);
1486
1487        mutex_unlock(&priv->mtx);
1488}
1489
1490/* Submit Rx urb back to the device */
1491static void at76_work_submit_rx(struct work_struct *work)
1492{
1493        struct at76_priv *priv = container_of(work, struct at76_priv,
1494                                              work_submit_rx);
1495
1496        mutex_lock(&priv->mtx);
1497        at76_submit_rx_urb(priv);
1498        mutex_unlock(&priv->mtx);
1499}
1500
1501/* This is a workaround to make scan working:
1502 * currently mac80211 does not process frames with no frequency
1503 * information.
1504 * However during scan the HW performs a sweep by itself, and we
1505 * are unable to know where the radio is actually tuned.
1506 * This function tries to do its best to guess this information..
1507 * During scan, If the current frame is a beacon or a probe response,
1508 * the channel information is extracted from it.
1509 * When not scanning, for other frames, or if it happens that for
1510 * whatever reason we fail to parse beacons and probe responses, this
1511 * function returns the priv->channel information, that should be correct
1512 * at least when we are not scanning.
1513 */
1514static inline int at76_guess_freq(struct at76_priv *priv)
1515{
1516        size_t el_off;
1517        const u8 *el;
1518        int channel = priv->channel;
1519        int len = priv->rx_skb->len;
1520        struct ieee80211_hdr *hdr = (void *)priv->rx_skb->data;
1521
1522        if (!priv->scanning)
1523                goto exit;
1524
1525        if (len < 24)
1526                goto exit;
1527
1528        if (ieee80211_is_probe_resp(hdr->frame_control)) {
1529                el_off = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
1530                el = ((struct ieee80211_mgmt *)hdr)->u.probe_resp.variable;
1531        } else if (ieee80211_is_beacon(hdr->frame_control)) {
1532                el_off = offsetof(struct ieee80211_mgmt, u.beacon.variable);
1533                el = ((struct ieee80211_mgmt *)hdr)->u.beacon.variable;
1534        } else {
1535                goto exit;
1536        }
1537        len -= el_off;
1538
1539        el = cfg80211_find_ie(WLAN_EID_DS_PARAMS, el, len);
1540        if (el && el[1] > 0)
1541                channel = el[2];
1542
1543exit:
1544        return ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1545}
1546
1547static void at76_rx_tasklet(struct tasklet_struct *t)
1548{
1549        struct at76_priv *priv = from_tasklet(priv, t, rx_tasklet);
1550        struct urb *urb = priv->rx_urb;
1551        struct at76_rx_buffer *buf;
1552        struct ieee80211_rx_status rx_status = { 0 };
1553
1554        if (priv->device_unplugged) {
1555                at76_dbg(DBG_DEVSTART, "device unplugged");
1556                at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
1557                return;
1558        }
1559
1560        if (!priv->rx_skb || !priv->rx_skb->data)
1561                return;
1562
1563        buf = (struct at76_rx_buffer *)priv->rx_skb->data;
1564
1565        if (urb->status != 0) {
1566                if (urb->status != -ENOENT && urb->status != -ECONNRESET)
1567                        at76_dbg(DBG_URB,
1568                                 "%s %s: - nonzero Rx bulk status received: %d",
1569                                 __func__, wiphy_name(priv->hw->wiphy),
1570                                 urb->status);
1571                return;
1572        }
1573
1574        at76_dbg(DBG_RX_ATMEL_HDR,
1575                 "%s: rx frame: rate %d rssi %d noise %d link %d",
1576                 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi,
1577                 buf->noise_level, buf->link_quality);
1578
1579        skb_pull(priv->rx_skb, AT76_RX_HDRLEN);
1580        skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength));
1581        at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data,
1582                      priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len);
1583
1584        rx_status.signal = buf->rssi;
1585        rx_status.flag |= RX_FLAG_DECRYPTED;
1586        rx_status.flag |= RX_FLAG_IV_STRIPPED;
1587        rx_status.band = NL80211_BAND_2GHZ;
1588        rx_status.freq = at76_guess_freq(priv);
1589
1590        at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d",
1591                 priv->rx_skb->len, priv->rx_skb->data_len);
1592        memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status));
1593        ieee80211_rx_irqsafe(priv->hw, priv->rx_skb);
1594
1595        /* Use a new skb for the next receive */
1596        priv->rx_skb = NULL;
1597
1598        at76_submit_rx_urb(priv);
1599}
1600
1601/* Load firmware into kernel memory and parse it */
1602static struct fwentry *at76_load_firmware(struct usb_device *udev,
1603                                          enum board_type board_type)
1604{
1605        int ret;
1606        char *str;
1607        struct at76_fw_header *fwh;
1608        struct fwentry *fwe = &firmwares[board_type];
1609
1610        mutex_lock(&fw_mutex);
1611
1612        if (fwe->loaded) {
1613                at76_dbg(DBG_FW, "re-using previously loaded fw");
1614                goto exit;
1615        }
1616
1617        at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
1618        ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
1619        if (ret < 0) {
1620                dev_err(&udev->dev, "firmware %s not found!\n",
1621                        fwe->fwname);
1622                dev_err(&udev->dev,
1623                        "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n");
1624                goto exit;
1625        }
1626
1627        at76_dbg(DBG_FW, "got it.");
1628        fwh = (struct at76_fw_header *)(fwe->fw->data);
1629
1630        if (fwe->fw->size <= sizeof(*fwh)) {
1631                dev_err(&udev->dev,
1632                        "firmware is too short (0x%zx)\n", fwe->fw->size);
1633                goto exit;
1634        }
1635
1636        /* CRC currently not checked */
1637        fwe->board_type = le32_to_cpu(fwh->board_type);
1638        if (fwe->board_type != board_type) {
1639                dev_err(&udev->dev,
1640                        "board type mismatch, requested %u, got %u\n",
1641                        board_type, fwe->board_type);
1642                goto exit;
1643        }
1644
1645        fwe->fw_version.major = fwh->major;
1646        fwe->fw_version.minor = fwh->minor;
1647        fwe->fw_version.patch = fwh->patch;
1648        fwe->fw_version.build = fwh->build;
1649
1650        str = (char *)fwh + le32_to_cpu(fwh->str_offset);
1651        fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
1652        fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
1653        fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
1654        fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
1655
1656        fwe->loaded = 1;
1657
1658        dev_printk(KERN_DEBUG, &udev->dev,
1659                   "using firmware %s (version %d.%d.%d-%d)\n",
1660                   fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
1661
1662        at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
1663                 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
1664                 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
1665        at76_dbg(DBG_DEVSTART, "firmware id %s", str);
1666
1667exit:
1668        mutex_unlock(&fw_mutex);
1669
1670        if (fwe->loaded)
1671                return fwe;
1672        else
1673                return NULL;
1674}
1675
1676static int at76_join(struct at76_priv *priv)
1677{
1678        struct at76_req_join join;
1679        int ret;
1680
1681        memset(&join, 0, sizeof(struct at76_req_join));
1682        memcpy(join.essid, priv->essid, priv->essid_size);
1683        join.essid_size = priv->essid_size;
1684        memcpy(join.bssid, priv->bssid, ETH_ALEN);
1685        join.bss_type = INFRASTRUCTURE_MODE;
1686        join.channel = priv->channel;
1687        join.timeout = cpu_to_le16(2000);
1688
1689        at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__);
1690        ret = at76_set_card_command(priv->udev, CMD_JOIN, &join,
1691                                    sizeof(struct at76_req_join));
1692
1693        if (ret < 0) {
1694                wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n",
1695                          ret);
1696                return 0;
1697        }
1698
1699        ret = at76_wait_completion(priv, CMD_JOIN);
1700        at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret);
1701        if (ret != CMD_STATUS_COMPLETE) {
1702                wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n",
1703                          ret);
1704                return 0;
1705        }
1706
1707        at76_set_pm_mode(priv);
1708
1709        return 0;
1710}
1711
1712static void at76_work_join_bssid(struct work_struct *work)
1713{
1714        struct at76_priv *priv = container_of(work, struct at76_priv,
1715                                              work_join_bssid);
1716
1717        if (priv->device_unplugged)
1718                return;
1719
1720        mutex_lock(&priv->mtx);
1721
1722        if (is_valid_ether_addr(priv->bssid))
1723                at76_join(priv);
1724
1725        mutex_unlock(&priv->mtx);
1726}
1727
1728static void at76_mac80211_tx_callback(struct urb *urb)
1729{
1730        struct at76_priv *priv = urb->context;
1731        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
1732
1733        at76_dbg(DBG_MAC80211, "%s()", __func__);
1734
1735        switch (urb->status) {
1736        case 0:
1737                /* success */
1738                info->flags |= IEEE80211_TX_STAT_ACK;
1739                break;
1740        case -ENOENT:
1741        case -ECONNRESET:
1742                /* fail, urb has been unlinked */
1743                /* FIXME: add error message */
1744                break;
1745        default:
1746                at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1747                         __func__, urb->status);
1748                break;
1749        }
1750
1751        memset(&info->status, 0, sizeof(info->status));
1752
1753        ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
1754
1755        priv->tx_skb = NULL;
1756
1757        ieee80211_wake_queues(priv->hw);
1758}
1759
1760static void at76_mac80211_tx(struct ieee80211_hw *hw,
1761                             struct ieee80211_tx_control *control,
1762                             struct sk_buff *skb)
1763{
1764        struct at76_priv *priv = hw->priv;
1765        struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
1766        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1767        struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1768        int padding, submit_len, ret;
1769
1770        at76_dbg(DBG_MAC80211, "%s()", __func__);
1771
1772        if (priv->tx_urb->status == -EINPROGRESS) {
1773                wiphy_err(priv->hw->wiphy,
1774                          "%s called while tx urb is pending\n", __func__);
1775                dev_kfree_skb_any(skb);
1776                return;
1777        }
1778
1779        /* The following code lines are important when the device is going to
1780         * authenticate with a new bssid. The driver must send CMD_JOIN before
1781         * an authentication frame is transmitted. For this to succeed, the
1782         * correct bssid of the AP must be known. As mac80211 does not inform
1783         * drivers about the bssid prior to the authentication process the
1784         * following workaround is necessary. If the TX frame is an
1785         * authentication frame extract the bssid and send the CMD_JOIN. */
1786        if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) {
1787                if (!ether_addr_equal_64bits(priv->bssid, mgmt->bssid)) {
1788                        memcpy(priv->bssid, mgmt->bssid, ETH_ALEN);
1789                        ieee80211_queue_work(hw, &priv->work_join_bssid);
1790                        dev_kfree_skb_any(skb);
1791                        return;
1792                }
1793        }
1794
1795        ieee80211_stop_queues(hw);
1796
1797        at76_ledtrig_tx_activity();     /* tell ledtrigger we send a packet */
1798
1799        WARN_ON(priv->tx_skb != NULL);
1800
1801        priv->tx_skb = skb;
1802        padding = at76_calc_padding(skb->len);
1803        submit_len = AT76_TX_HDRLEN + skb->len + padding;
1804
1805        /* setup 'Atmel' header */
1806        memset(tx_buffer, 0, sizeof(*tx_buffer));
1807        tx_buffer->padding = padding;
1808        tx_buffer->wlength = cpu_to_le16(skb->len);
1809        tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value;
1810        memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
1811        memcpy(tx_buffer->packet, skb->data, skb->len);
1812
1813        at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr",
1814                 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength),
1815                 tx_buffer->padding, tx_buffer->tx_rate);
1816
1817        /* send stuff */
1818        at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len,
1819                      "%s(): tx_buffer %d bytes:", __func__, submit_len);
1820        usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
1821                          submit_len, at76_mac80211_tx_callback, priv);
1822        ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1823        if (ret) {
1824                wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret);
1825                if (ret == -EINVAL)
1826                        wiphy_err(priv->hw->wiphy,
1827                                  "-EINVAL: tx urb %p hcpriv %p complete %p\n",
1828                                  priv->tx_urb,
1829                                  priv->tx_urb->hcpriv, priv->tx_urb->complete);
1830        }
1831}
1832
1833static int at76_mac80211_start(struct ieee80211_hw *hw)
1834{
1835        struct at76_priv *priv = hw->priv;
1836        int ret;
1837
1838        at76_dbg(DBG_MAC80211, "%s()", __func__);
1839
1840        mutex_lock(&priv->mtx);
1841
1842        ret = at76_submit_rx_urb(priv);
1843        if (ret < 0) {
1844                wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n",
1845                          ret);
1846                goto error;
1847        }
1848
1849        at76_startup_device(priv);
1850
1851        at76_start_monitor(priv);
1852
1853error:
1854        mutex_unlock(&priv->mtx);
1855
1856        return 0;
1857}
1858
1859static void at76_mac80211_stop(struct ieee80211_hw *hw)
1860{
1861        struct at76_priv *priv = hw->priv;
1862
1863        at76_dbg(DBG_MAC80211, "%s()", __func__);
1864
1865        cancel_delayed_work(&priv->dwork_hw_scan);
1866        cancel_work_sync(&priv->work_join_bssid);
1867        cancel_work_sync(&priv->work_set_promisc);
1868
1869        mutex_lock(&priv->mtx);
1870
1871        if (!priv->device_unplugged) {
1872                /* We are called by "ifconfig ethX down", not because the
1873                 * device is not available anymore. */
1874                at76_set_radio(priv, 0);
1875
1876                /* We unlink rx_urb because at76_open() re-submits it.
1877                 * If unplugged, at76_delete_device() takes care of it. */
1878                usb_kill_urb(priv->rx_urb);
1879        }
1880
1881        mutex_unlock(&priv->mtx);
1882}
1883
1884static int at76_add_interface(struct ieee80211_hw *hw,
1885                              struct ieee80211_vif *vif)
1886{
1887        struct at76_priv *priv = hw->priv;
1888        int ret = 0;
1889
1890        at76_dbg(DBG_MAC80211, "%s()", __func__);
1891
1892        mutex_lock(&priv->mtx);
1893
1894        switch (vif->type) {
1895        case NL80211_IFTYPE_STATION:
1896                priv->iw_mode = IW_MODE_INFRA;
1897                break;
1898        default:
1899                ret = -EOPNOTSUPP;
1900                goto exit;
1901        }
1902
1903exit:
1904        mutex_unlock(&priv->mtx);
1905
1906        return ret;
1907}
1908
1909static void at76_remove_interface(struct ieee80211_hw *hw,
1910                                  struct ieee80211_vif *vif)
1911{
1912        at76_dbg(DBG_MAC80211, "%s()", __func__);
1913}
1914
1915static void at76_dwork_hw_scan(struct work_struct *work)
1916{
1917        struct at76_priv *priv = container_of(work, struct at76_priv,
1918                                              dwork_hw_scan.work);
1919        struct cfg80211_scan_info info = {
1920                .aborted = false,
1921        };
1922        int ret;
1923
1924        if (priv->device_unplugged)
1925                return;
1926
1927        mutex_lock(&priv->mtx);
1928
1929        ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1930        at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret);
1931
1932        /* FIXME: add maximum time for scan to complete */
1933
1934        if (ret != CMD_STATUS_COMPLETE) {
1935                ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
1936                                             SCAN_POLL_INTERVAL);
1937                mutex_unlock(&priv->mtx);
1938                return;
1939        }
1940
1941        if (is_valid_ether_addr(priv->bssid))
1942                at76_join(priv);
1943
1944        priv->scanning = false;
1945
1946        mutex_unlock(&priv->mtx);
1947
1948        ieee80211_scan_completed(priv->hw, &info);
1949
1950        ieee80211_wake_queues(priv->hw);
1951}
1952
1953static int at76_hw_scan(struct ieee80211_hw *hw,
1954                        struct ieee80211_vif *vif,
1955                        struct ieee80211_scan_request *hw_req)
1956{
1957        struct cfg80211_scan_request *req = &hw_req->req;
1958        struct at76_priv *priv = hw->priv;
1959        struct at76_req_scan scan;
1960        u8 *ssid = NULL;
1961        int ret, len = 0;
1962
1963        at76_dbg(DBG_MAC80211, "%s():", __func__);
1964
1965        if (priv->device_unplugged)
1966                return 0;
1967
1968        mutex_lock(&priv->mtx);
1969
1970        ieee80211_stop_queues(hw);
1971
1972        memset(&scan, 0, sizeof(struct at76_req_scan));
1973        eth_broadcast_addr(scan.bssid);
1974
1975        if (req->n_ssids) {
1976                scan.scan_type = SCAN_TYPE_ACTIVE;
1977                ssid = req->ssids[0].ssid;
1978                len = req->ssids[0].ssid_len;
1979        } else {
1980                scan.scan_type = SCAN_TYPE_PASSIVE;
1981        }
1982
1983        if (len) {
1984                memcpy(scan.essid, ssid, len);
1985                scan.essid_size = len;
1986        }
1987
1988        scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1989        scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1990        scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1991        scan.international_scan = 0;
1992
1993        at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__);
1994        ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1995
1996        if (ret < 0) {
1997                wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret);
1998                goto exit;
1999        }
2000
2001        priv->scanning = true;
2002        ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan,
2003                                     SCAN_POLL_INTERVAL);
2004
2005exit:
2006        mutex_unlock(&priv->mtx);
2007
2008        return 0;
2009}
2010
2011static int at76_config(struct ieee80211_hw *hw, u32 changed)
2012{
2013        struct at76_priv *priv = hw->priv;
2014
2015        at76_dbg(DBG_MAC80211, "%s(): channel %d",
2016                 __func__, hw->conf.chandef.chan->hw_value);
2017        at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
2018
2019        mutex_lock(&priv->mtx);
2020
2021        priv->channel = hw->conf.chandef.chan->hw_value;
2022
2023        if (is_valid_ether_addr(priv->bssid))
2024                at76_join(priv);
2025        else
2026                at76_start_monitor(priv);
2027
2028        mutex_unlock(&priv->mtx);
2029
2030        return 0;
2031}
2032
2033static void at76_bss_info_changed(struct ieee80211_hw *hw,
2034                                  struct ieee80211_vif *vif,
2035                                  struct ieee80211_bss_conf *conf,
2036                                  u32 changed)
2037{
2038        struct at76_priv *priv = hw->priv;
2039
2040        at76_dbg(DBG_MAC80211, "%s():", __func__);
2041
2042        if (!(changed & BSS_CHANGED_BSSID))
2043                return;
2044
2045        at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:");
2046
2047        mutex_lock(&priv->mtx);
2048
2049        memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2050
2051        if (is_valid_ether_addr(priv->bssid))
2052                /* mac80211 is joining a bss */
2053                at76_join(priv);
2054
2055        mutex_unlock(&priv->mtx);
2056}
2057
2058/* must be atomic */
2059static void at76_configure_filter(struct ieee80211_hw *hw,
2060                                  unsigned int changed_flags,
2061                                  unsigned int *total_flags, u64 multicast)
2062{
2063        struct at76_priv *priv = hw->priv;
2064        int flags;
2065
2066        at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x "
2067                 "total_flags=0x%08x",
2068                 __func__, changed_flags, *total_flags);
2069
2070        flags = changed_flags & AT76_SUPPORTED_FILTERS;
2071        *total_flags = AT76_SUPPORTED_FILTERS;
2072
2073        /* Bail out after updating flags to prevent a WARN_ON in mac80211. */
2074        if (priv->device_unplugged)
2075                return;
2076
2077        /* FIXME: access to priv->promisc should be protected with
2078         * priv->mtx, but it's impossible because this function needs to be
2079         * atomic */
2080
2081        if (flags && !priv->promisc) {
2082                /* mac80211 wants us to enable promiscuous mode */
2083                priv->promisc = 1;
2084        } else if (!flags && priv->promisc) {
2085                /* we need to disable promiscuous mode */
2086                priv->promisc = 0;
2087        } else
2088                return;
2089
2090        ieee80211_queue_work(hw, &priv->work_set_promisc);
2091}
2092
2093static int at76_set_wep(struct at76_priv *priv)
2094{
2095        int ret = 0;
2096        struct mib_mac_wep *mib_data = &priv->mib_buf.data.wep_mib;
2097
2098        priv->mib_buf.type = MIB_MAC_WEP;
2099        priv->mib_buf.size = sizeof(struct mib_mac_wep);
2100        priv->mib_buf.index = 0;
2101
2102        memset(mib_data, 0, sizeof(*mib_data));
2103
2104        if (priv->wep_enabled) {
2105                if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
2106                        mib_data->encryption_level = 2;
2107                else
2108                        mib_data->encryption_level = 1;
2109
2110                /* always exclude unencrypted if WEP is active */
2111                mib_data->exclude_unencrypted = 1;
2112        } else {
2113                mib_data->exclude_unencrypted = 0;
2114                mib_data->encryption_level = 0;
2115        }
2116
2117        mib_data->privacy_invoked = priv->wep_enabled;
2118        mib_data->wep_default_key_id = priv->wep_key_id;
2119        memcpy(mib_data->wep_default_keyvalue, priv->wep_keys,
2120               sizeof(priv->wep_keys));
2121
2122        ret = at76_set_mib(priv, &priv->mib_buf);
2123
2124        if (ret < 0)
2125                wiphy_err(priv->hw->wiphy,
2126                          "set_mib (wep) failed: %d\n", ret);
2127
2128        return ret;
2129}
2130
2131static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2132                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2133                        struct ieee80211_key_conf *key)
2134{
2135        struct at76_priv *priv = hw->priv;
2136
2137        int i;
2138
2139        at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d "
2140                 "key->keylen %d",
2141                 __func__, cmd, key->cipher, key->keyidx, key->keylen);
2142
2143        if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) &&
2144            (key->cipher != WLAN_CIPHER_SUITE_WEP104))
2145                return -EOPNOTSUPP;
2146
2147        key->hw_key_idx = key->keyidx;
2148
2149        mutex_lock(&priv->mtx);
2150
2151        switch (cmd) {
2152        case SET_KEY:
2153                memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen);
2154                priv->wep_keys_len[key->keyidx] = key->keylen;
2155
2156                /* FIXME: find out how to do this properly */
2157                priv->wep_key_id = key->keyidx;
2158
2159                break;
2160        case DISABLE_KEY:
2161        default:
2162                priv->wep_keys_len[key->keyidx] = 0;
2163                break;
2164        }
2165
2166        priv->wep_enabled = 0;
2167
2168        for (i = 0; i < WEP_KEYS; i++) {
2169                if (priv->wep_keys_len[i] != 0)
2170                        priv->wep_enabled = 1;
2171        }
2172
2173        at76_set_wep(priv);
2174
2175        mutex_unlock(&priv->mtx);
2176
2177        return 0;
2178}
2179
2180static const struct ieee80211_ops at76_ops = {
2181        .tx = at76_mac80211_tx,
2182        .add_interface = at76_add_interface,
2183        .remove_interface = at76_remove_interface,
2184        .config = at76_config,
2185        .bss_info_changed = at76_bss_info_changed,
2186        .configure_filter = at76_configure_filter,
2187        .start = at76_mac80211_start,
2188        .stop = at76_mac80211_stop,
2189        .hw_scan = at76_hw_scan,
2190        .set_key = at76_set_key,
2191};
2192
2193/* Allocate network device and initialize private data */
2194static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
2195{
2196        struct ieee80211_hw *hw;
2197        struct at76_priv *priv;
2198
2199        hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops);
2200        if (!hw) {
2201                printk(KERN_ERR DRIVER_NAME ": could not register"
2202                       " ieee80211_hw\n");
2203                return NULL;
2204        }
2205
2206        priv = hw->priv;
2207        priv->hw = hw;
2208
2209        priv->udev = udev;
2210
2211        mutex_init(&priv->mtx);
2212        INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
2213        INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
2214        INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid);
2215        INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan);
2216
2217        tasklet_setup(&priv->rx_tasklet, at76_rx_tasklet);
2218
2219        priv->pm_mode = AT76_PM_OFF;
2220        priv->pm_period = 0;
2221
2222        /* unit us */
2223
2224        return priv;
2225}
2226
2227static int at76_alloc_urbs(struct at76_priv *priv,
2228                           struct usb_interface *interface)
2229{
2230        struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
2231        int i;
2232        int buffer_size;
2233        struct usb_host_interface *iface_desc;
2234
2235        at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2236
2237        at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
2238                 interface->cur_altsetting->desc.bNumEndpoints);
2239
2240        ep_in = NULL;
2241        ep_out = NULL;
2242        iface_desc = interface->cur_altsetting;
2243        for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
2244                endpoint = &iface_desc->endpoint[i].desc;
2245
2246                at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
2247                         __func__, i, endpoint->bEndpointAddress,
2248                         endpoint->bmAttributes);
2249
2250                if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
2251                        ep_in = endpoint;
2252
2253                if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
2254                        ep_out = endpoint;
2255        }
2256
2257        if (!ep_in || !ep_out) {
2258                dev_err(&interface->dev, "bulk endpoints missing\n");
2259                return -ENXIO;
2260        }
2261
2262        priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
2263        priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
2264
2265        priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2266        priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2267        if (!priv->rx_urb || !priv->tx_urb) {
2268                dev_err(&interface->dev, "cannot allocate URB\n");
2269                return -ENOMEM;
2270        }
2271
2272        buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
2273        priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
2274        if (!priv->bulk_out_buffer)
2275                return -ENOMEM;
2276
2277        at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2278
2279        return 0;
2280}
2281
2282static struct ieee80211_rate at76_rates[] = {
2283        { .bitrate = 10, .hw_value = TX_RATE_1MBIT, },
2284        { .bitrate = 20, .hw_value = TX_RATE_2MBIT, },
2285        { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, },
2286        { .bitrate = 110, .hw_value = TX_RATE_11MBIT, },
2287};
2288
2289static struct ieee80211_channel at76_channels[] = {
2290        { .center_freq = 2412, .hw_value = 1 },
2291        { .center_freq = 2417, .hw_value = 2 },
2292        { .center_freq = 2422, .hw_value = 3 },
2293        { .center_freq = 2427, .hw_value = 4 },
2294        { .center_freq = 2432, .hw_value = 5 },
2295        { .center_freq = 2437, .hw_value = 6 },
2296        { .center_freq = 2442, .hw_value = 7 },
2297        { .center_freq = 2447, .hw_value = 8 },
2298        { .center_freq = 2452, .hw_value = 9 },
2299        { .center_freq = 2457, .hw_value = 10 },
2300        { .center_freq = 2462, .hw_value = 11 },
2301        { .center_freq = 2467, .hw_value = 12 },
2302        { .center_freq = 2472, .hw_value = 13 },
2303        { .center_freq = 2484, .hw_value = 14 }
2304};
2305
2306static struct ieee80211_supported_band at76_supported_band = {
2307        .channels = at76_channels,
2308        .n_channels = ARRAY_SIZE(at76_channels),
2309        .bitrates = at76_rates,
2310        .n_bitrates = ARRAY_SIZE(at76_rates),
2311};
2312
2313/* Register network device and initialize the hardware */
2314static int at76_init_new_device(struct at76_priv *priv,
2315                                struct usb_interface *interface)
2316{
2317        struct wiphy *wiphy;
2318        size_t len;
2319        int ret;
2320
2321        /* set up the endpoint information */
2322        /* check out the endpoints */
2323
2324        at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
2325                 interface->cur_altsetting->desc.bNumEndpoints);
2326
2327        ret = at76_alloc_urbs(priv, interface);
2328        if (ret < 0)
2329                goto exit;
2330
2331        /* MAC address */
2332        ret = at76_get_hw_config(priv);
2333        if (ret < 0) {
2334                dev_err(&interface->dev, "cannot get MAC address\n");
2335                goto exit;
2336        }
2337
2338        priv->domain = at76_get_reg_domain(priv->regulatory_domain);
2339
2340        priv->channel = DEF_CHANNEL;
2341        priv->iw_mode = IW_MODE_INFRA;
2342        priv->rts_threshold = DEF_RTS_THRESHOLD;
2343        priv->frag_threshold = DEF_FRAG_THRESHOLD;
2344        priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
2345        priv->txrate = TX_RATE_AUTO;
2346        priv->preamble_type = PREAMBLE_TYPE_LONG;
2347        priv->beacon_period = 100;
2348        priv->auth_mode = WLAN_AUTH_OPEN;
2349        priv->scan_min_time = DEF_SCAN_MIN_TIME;
2350        priv->scan_max_time = DEF_SCAN_MAX_TIME;
2351        priv->scan_mode = SCAN_TYPE_ACTIVE;
2352        priv->device_unplugged = 0;
2353
2354        /* mac80211 initialisation */
2355        wiphy = priv->hw->wiphy;
2356        priv->hw->wiphy->max_scan_ssids = 1;
2357        priv->hw->wiphy->max_scan_ie_len = 0;
2358        priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
2359        priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = &at76_supported_band;
2360        ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
2361        ieee80211_hw_set(priv->hw, SIGNAL_UNSPEC);
2362        priv->hw->max_signal = 100;
2363
2364        SET_IEEE80211_DEV(priv->hw, &interface->dev);
2365        SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
2366
2367        len = sizeof(wiphy->fw_version);
2368        snprintf(wiphy->fw_version, len, "%d.%d.%d-%d",
2369                 priv->fw_version.major, priv->fw_version.minor,
2370                 priv->fw_version.patch, priv->fw_version.build);
2371
2372        wiphy->hw_version = priv->board_type;
2373
2374        wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2375
2376        ret = ieee80211_register_hw(priv->hw);
2377        if (ret) {
2378                printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n",
2379                       ret);
2380                goto exit;
2381        }
2382
2383        priv->mac80211_registered = 1;
2384
2385        wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
2386                   dev_name(&interface->dev), priv->mac_addr,
2387                   priv->fw_version.major, priv->fw_version.minor,
2388                   priv->fw_version.patch, priv->fw_version.build);
2389        wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n",
2390                   priv->regulatory_domain, priv->domain->name);
2391
2392exit:
2393        return ret;
2394}
2395
2396static void at76_delete_device(struct at76_priv *priv)
2397{
2398        at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
2399
2400        /* The device is gone, don't bother turning it off */
2401        priv->device_unplugged = 1;
2402
2403        tasklet_kill(&priv->rx_tasklet);
2404
2405        if (priv->mac80211_registered)
2406                ieee80211_unregister_hw(priv->hw);
2407
2408        if (priv->tx_urb) {
2409                usb_kill_urb(priv->tx_urb);
2410                usb_free_urb(priv->tx_urb);
2411        }
2412        if (priv->rx_urb) {
2413                usb_kill_urb(priv->rx_urb);
2414                usb_free_urb(priv->rx_urb);
2415        }
2416
2417        at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
2418
2419        kfree(priv->bulk_out_buffer);
2420
2421        del_timer_sync(&ledtrig_tx_timer);
2422
2423        kfree_skb(priv->rx_skb);
2424
2425        at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw",
2426                 __func__);
2427        ieee80211_free_hw(priv->hw);
2428
2429        at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
2430}
2431
2432static int at76_probe(struct usb_interface *interface,
2433                      const struct usb_device_id *id)
2434{
2435        int ret;
2436        struct at76_priv *priv;
2437        struct fwentry *fwe;
2438        struct usb_device *udev;
2439        int op_mode;
2440        int need_ext_fw = 0;
2441        struct mib_fw_version *fwv = NULL;
2442        int board_type = (int)id->driver_info;
2443
2444        udev = usb_get_dev(interface_to_usbdev(interface));
2445
2446        fwv = kmalloc(sizeof(*fwv), GFP_KERNEL);
2447        if (!fwv) {
2448                ret = -ENOMEM;
2449                goto exit;
2450        }
2451
2452        /* Load firmware into kernel memory */
2453        fwe = at76_load_firmware(udev, board_type);
2454        if (!fwe) {
2455                ret = -ENOENT;
2456                goto exit;
2457        }
2458
2459        op_mode = at76_get_op_mode(udev);
2460
2461        at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
2462
2463        /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
2464           we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
2465
2466        if (op_mode == OPMODE_HW_CONFIG_MODE) {
2467                dev_err(&interface->dev,
2468                        "cannot handle a device in HW_CONFIG_MODE\n");
2469                ret = -EBUSY;
2470                goto exit;
2471        }
2472
2473        if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
2474            && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
2475                /* download internal firmware part */
2476                dev_printk(KERN_DEBUG, &interface->dev,
2477                           "downloading internal firmware\n");
2478                ret = at76_load_internal_fw(udev, fwe);
2479                if (ret < 0) {
2480                        dev_err(&interface->dev,
2481                                "error %d downloading internal firmware\n",
2482                                ret);
2483                }
2484                goto exit;
2485        }
2486
2487        /* Internal firmware already inside the device.  Get firmware
2488         * version to test if external firmware is loaded.
2489         * This works only for newer firmware, e.g. the Intersil 0.90.x
2490         * says "control timeout on ep0in" and subsequent
2491         * at76_get_op_mode() fail too :-( */
2492
2493        /* if version >= 0.100.x.y or device with built-in flash we can
2494         * query the device for the fw version */
2495        if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
2496            || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
2497                ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2498                if (ret < 0 || (fwv->major | fwv->minor) == 0)
2499                        need_ext_fw = 1;
2500        } else
2501                /* No way to check firmware version, reload to be sure */
2502                need_ext_fw = 1;
2503
2504        if (need_ext_fw) {
2505                dev_printk(KERN_DEBUG, &interface->dev,
2506                           "downloading external firmware\n");
2507
2508                ret = at76_load_external_fw(udev, fwe);
2509                if (ret < 0)
2510                        goto exit;
2511
2512                /* Re-check firmware version */
2513                ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv));
2514                if (ret < 0) {
2515                        dev_err(&interface->dev,
2516                                "error %d getting firmware version\n", ret);
2517                        goto exit;
2518                }
2519        }
2520
2521        priv = at76_alloc_new_device(udev);
2522        if (!priv) {
2523                ret = -ENOMEM;
2524                goto exit;
2525        }
2526
2527        usb_set_intfdata(interface, priv);
2528
2529        memcpy(&priv->fw_version, fwv, sizeof(struct mib_fw_version));
2530        priv->board_type = board_type;
2531
2532        ret = at76_init_new_device(priv, interface);
2533        if (ret < 0)
2534                at76_delete_device(priv);
2535
2536exit:
2537        kfree(fwv);
2538        if (ret < 0)
2539                usb_put_dev(udev);
2540        return ret;
2541}
2542
2543static void at76_disconnect(struct usb_interface *interface)
2544{
2545        struct at76_priv *priv;
2546
2547        priv = usb_get_intfdata(interface);
2548        usb_set_intfdata(interface, NULL);
2549
2550        /* Disconnect after loading internal firmware */
2551        if (!priv)
2552                return;
2553
2554        wiphy_info(priv->hw->wiphy, "disconnecting\n");
2555        at76_delete_device(priv);
2556        usb_put_dev(priv->udev);
2557        dev_info(&interface->dev, "disconnected\n");
2558}
2559
2560/* Structure for registering this driver with the USB subsystem */
2561static struct usb_driver at76_driver = {
2562        .name = DRIVER_NAME,
2563        .probe = at76_probe,
2564        .disconnect = at76_disconnect,
2565        .id_table = dev_table,
2566        .disable_hub_initiated_lpm = 1,
2567};
2568
2569static int __init at76_mod_init(void)
2570{
2571        int result;
2572
2573        printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
2574
2575        /* register this driver with the USB subsystem */
2576        result = usb_register(&at76_driver);
2577        if (result < 0)
2578                printk(KERN_ERR DRIVER_NAME
2579                       ": usb_register failed (status %d)\n", result);
2580        else
2581                led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
2582        return result;
2583}
2584
2585static void __exit at76_mod_exit(void)
2586{
2587        int i;
2588
2589        printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
2590        usb_deregister(&at76_driver);
2591        for (i = 0; i < ARRAY_SIZE(firmwares); i++)
2592                release_firmware(firmwares[i].fw);
2593        led_trigger_unregister_simple(ledtrig_tx);
2594}
2595
2596module_param_named(debug, at76_debug, uint, 0600);
2597MODULE_PARM_DESC(debug, "Debugging level");
2598
2599module_init(at76_mod_init);
2600module_exit(at76_mod_exit);
2601
2602MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
2603MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
2604MODULE_AUTHOR("Alex <alex@foogod.com>");
2605MODULE_AUTHOR("Nick Jones");
2606MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
2607MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
2608MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
2609MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");
2610MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");
2611MODULE_DESCRIPTION(DRIVER_DESC);
2612MODULE_LICENSE("GPL");
2613