1/* 2 * at76c503/at76c505 USB driver 3 * 4 * Copyright (c) 2002 - 2003 Oliver Kurth 5 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de> 6 * Copyright (c) 2004 Nick Jones 7 * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com> 8 * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org> 9 * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi> 10 * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net> 11 * 12 * This program is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License as 14 * published by the Free Software Foundation; either version 2 of 15 * the License, or (at your option) any later version. 16 * 17 * This file is part of the Berlios driver for WLAN USB devices based on the 18 * Atmel AT76C503A/505/505A. 19 * 20 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed 21 * 22 * TODO list is at the wiki: 23 * 24 * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO 25 * 26 */ 27 28#include <linux/init.h> 29#include <linux/kernel.h> 30#include <linux/sched.h> 31#include <linux/errno.h> 32#include <linux/slab.h> 33#include <linux/module.h> 34#include <linux/spinlock.h> 35#include <linux/list.h> 36#include <linux/usb.h> 37#include <linux/netdevice.h> 38#include <linux/if_arp.h> 39#include <linux/etherdevice.h> 40#include <linux/ethtool.h> 41#include <linux/wireless.h> 42#include <net/iw_handler.h> 43#include <net/ieee80211_radiotap.h> 44#include <linux/firmware.h> 45#include <linux/leds.h> 46#include <net/mac80211.h> 47 48#include "at76c50x-usb.h" 49 50/* Version information */ 51#define DRIVER_NAME "at76c50x-usb" 52#define DRIVER_VERSION "0.17" 53#define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver" 54 55/* at76_debug bits */ 56#define DBG_PROGRESS 0x00000001 /* authentication/accociation */ 57#define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */ 58#define DBG_IOCTL 0x00000004 /* ioctl calls / settings */ 59#define DBG_MAC_STATE 0x00000008 /* MAC state transitions */ 60#define DBG_TX_DATA 0x00000010 /* tx header */ 61#define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */ 62#define DBG_TX_MGMT 0x00000040 /* tx management */ 63#define DBG_RX_DATA 0x00000080 /* rx data header */ 64#define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */ 65#define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */ 66#define DBG_RX_BEACON 0x00000400 /* rx beacon */ 67#define DBG_RX_CTRL 0x00000800 /* rx control */ 68#define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */ 69#define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */ 70#define DBG_DEVSTART 0x00004000 /* fw download, device start */ 71#define DBG_URB 0x00008000 /* rx urb status, ... */ 72#define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */ 73#define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */ 74#define DBG_PM 0x00040000 /* power management settings */ 75#define DBG_BSS_MATCH 0x00080000 /* BSS match failures */ 76#define DBG_PARAMS 0x00100000 /* show configured parameters */ 77#define DBG_WAIT_COMPLETE 0x00200000 /* command completion */ 78#define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */ 79#define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */ 80#define DBG_MONITOR_MODE 0x01000000 /* monitor mode */ 81#define DBG_MIB 0x02000000 /* dump all MIBs on startup */ 82#define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */ 83#define DBG_WE_EVENTS 0x08000000 /* dump wireless events */ 84#define DBG_FW 0x10000000 /* firmware download */ 85#define DBG_DFU 0x20000000 /* device firmware upgrade */ 86#define DBG_CMD 0x40000000 87#define DBG_MAC80211 0x80000000 88 89#define DBG_DEFAULTS 0 90 91/* Use our own dbg macro */ 92#define at76_dbg(bits, format, arg...) \ 93do { \ 94 if (at76_debug & (bits)) \ 95 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \ 96} while (0) 97 98#define at76_dbg_dump(bits, buf, len, format, arg...) \ 99do { \ 100 if (at76_debug & (bits)) { \ 101 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \ 102 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \ 103 } \ 104} while (0) 105 106static uint at76_debug = DBG_DEFAULTS; 107 108/* Protect against concurrent firmware loading and parsing */ 109static struct mutex fw_mutex; 110 111static struct fwentry firmwares[] = { 112 [0] = { "" }, 113 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" }, 114 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" }, 115 [BOARD_503] = { "atmel_at76c503-rfmd.bin" }, 116 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" }, 117 [BOARD_505] = { "atmel_at76c505-rfmd.bin" }, 118 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" }, 119 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" }, 120 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" }, 121}; 122MODULE_FIRMWARE("atmel_at76c503-i3861.bin"); 123MODULE_FIRMWARE("atmel_at76c503-i3863.bin"); 124MODULE_FIRMWARE("atmel_at76c503-rfmd.bin"); 125MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin"); 126MODULE_FIRMWARE("atmel_at76c505-rfmd.bin"); 127MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin"); 128MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin"); 129MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin"); 130 131#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops) 132 133static struct usb_device_id dev_table[] = { 134 /* 135 * at76c503-i3861 136 */ 137 /* Generic AT76C503/3861 device */ 138 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 139 /* Linksys WUSB11 v2.1/v2.6 */ 140 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 141 /* Netgear MA101 rev. A */ 142 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 143 /* Tekram U300C / Allnet ALL0193 */ 144 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 145 /* HP HN210W J7801A */ 146 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 147 /* Sitecom/Z-Com/Zyxel M4Y-750 */ 148 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 149 /* Dynalink/Askey WLL013 (intersil) */ 150 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 151 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */ 152 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 153 /* BenQ AWL300 */ 154 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 155 /* Addtron AWU-120, Compex WLU11 */ 156 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 157 /* Intel AP310 AnyPoint II USB */ 158 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 159 /* Dynalink L11U */ 160 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 161 /* Arescom WL-210, FCC id 07J-GL2411USB */ 162 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 163 /* I-O DATA WN-B11/USB */ 164 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 165 /* BT Voyager 1010 */ 166 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 167 /* 168 * at76c503-i3863 169 */ 170 /* Generic AT76C503/3863 device */ 171 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) }, 172 /* Samsung SWL-2100U */ 173 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) }, 174 /* 175 * at76c503-rfmd 176 */ 177 /* Generic AT76C503/RFMD device */ 178 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) }, 179 /* Dynalink/Askey WLL013 (rfmd) */ 180 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) }, 181 /* Linksys WUSB11 v2.6 */ 182 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) }, 183 /* Network Everywhere NWU11B */ 184 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) }, 185 /* Netgear MA101 rev. B */ 186 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) }, 187 /* D-Link DWL-120 rev. E */ 188 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) }, 189 /* Actiontec 802UAT1, HWU01150-01UK */ 190 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) }, 191 /* AirVast W-Buddie WN210 */ 192 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) }, 193 /* Dick Smith Electronics XH1153 802.11b USB adapter */ 194 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) }, 195 /* CNet CNUSB611 */ 196 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) }, 197 /* FiberLine FL-WL200U */ 198 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) }, 199 /* BenQ AWL400 USB stick */ 200 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) }, 201 /* 3Com 3CRSHEW696 */ 202 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) }, 203 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */ 204 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) }, 205 /* Belkin F5D6050, version 2 */ 206 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) }, 207 /* iBlitzz, BWU613 (not *B or *SB) */ 208 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) }, 209 /* Gigabyte GN-WLBM101 */ 210 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) }, 211 /* Planex GW-US11S */ 212 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) }, 213 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */ 214 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) }, 215 /* Corega Wireless LAN USB-11 mini */ 216 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) }, 217 /* Corega Wireless LAN USB-11 mini2 */ 218 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) }, 219 /* Uniden PCW100 */ 220 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) }, 221 /* 222 * at76c503-rfmd-acc 223 */ 224 /* SMC2664W */ 225 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) }, 226 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */ 227 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) }, 228 /* 229 * at76c505-rfmd 230 */ 231 /* Generic AT76C505/RFMD */ 232 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) }, 233 /* 234 * at76c505-rfmd2958 235 */ 236 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */ 237 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) }, 238 /* Fiberline FL-WL240U */ 239 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) }, 240 /* CNet CNUSB-611G */ 241 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) }, 242 /* Linksys WUSB11 v2.8 */ 243 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) }, 244 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */ 245 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) }, 246 /* Corega WLAN USB Stick 11 */ 247 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) }, 248 /* Microstar MSI Box MS6978 */ 249 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) }, 250 /* 251 * at76c505a-rfmd2958 252 */ 253 /* Generic AT76C505A device */ 254 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) }, 255 /* Generic AT76C505AS device */ 256 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) }, 257 /* Siemens Gigaset USB WLAN Adapter 11 */ 258 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) }, 259 /* OQO Model 01+ Internal Wi-Fi */ 260 { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) }, 261 /* 262 * at76c505amx-rfmd 263 */ 264 /* Generic AT76C505AMX device */ 265 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) }, 266 { } 267}; 268 269MODULE_DEVICE_TABLE(usb, dev_table); 270 271/* Supported rates of this hardware, bit 7 marks basic rates */ 272static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 }; 273 274static const char *const preambles[] = { "long", "short", "auto" }; 275 276/* Firmware download */ 277/* DFU states */ 278#define STATE_IDLE 0x00 279#define STATE_DETACH 0x01 280#define STATE_DFU_IDLE 0x02 281#define STATE_DFU_DOWNLOAD_SYNC 0x03 282#define STATE_DFU_DOWNLOAD_BUSY 0x04 283#define STATE_DFU_DOWNLOAD_IDLE 0x05 284#define STATE_DFU_MANIFEST_SYNC 0x06 285#define STATE_DFU_MANIFEST 0x07 286#define STATE_DFU_MANIFEST_WAIT_RESET 0x08 287#define STATE_DFU_UPLOAD_IDLE 0x09 288#define STATE_DFU_ERROR 0x0a 289 290/* DFU commands */ 291#define DFU_DETACH 0 292#define DFU_DNLOAD 1 293#define DFU_UPLOAD 2 294#define DFU_GETSTATUS 3 295#define DFU_CLRSTATUS 4 296#define DFU_GETSTATE 5 297#define DFU_ABORT 6 298 299#define FW_BLOCK_SIZE 1024 300 301struct dfu_status { 302 unsigned char status; 303 unsigned char poll_timeout[3]; 304 unsigned char state; 305 unsigned char string; 306} __packed; 307 308static inline int at76_is_intersil(enum board_type board) 309{ 310 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863); 311} 312 313static inline int at76_is_503rfmd(enum board_type board) 314{ 315 return (board == BOARD_503 || board == BOARD_503_ACC); 316} 317 318static inline int at76_is_505a(enum board_type board) 319{ 320 return (board == BOARD_505A || board == BOARD_505AMX); 321} 322 323/* Load a block of the first (internal) part of the firmware */ 324static int at76_load_int_fw_block(struct usb_device *udev, int blockno, 325 void *block, int size) 326{ 327 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD, 328 USB_TYPE_CLASS | USB_DIR_OUT | 329 USB_RECIP_INTERFACE, blockno, 0, block, size, 330 USB_CTRL_GET_TIMEOUT); 331} 332 333static int at76_dfu_get_status(struct usb_device *udev, 334 struct dfu_status *status) 335{ 336 int ret; 337 338 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS, 339 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, 340 0, 0, status, sizeof(struct dfu_status), 341 USB_CTRL_GET_TIMEOUT); 342 return ret; 343} 344 345static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state) 346{ 347 int ret; 348 349 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE, 350 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, 351 0, 0, state, 1, USB_CTRL_GET_TIMEOUT); 352 return ret; 353} 354 355/* Convert timeout from the DFU status to jiffies */ 356static inline unsigned long at76_get_timeout(struct dfu_status *s) 357{ 358 return msecs_to_jiffies((s->poll_timeout[2] << 16) 359 | (s->poll_timeout[1] << 8) 360 | (s->poll_timeout[0])); 361} 362 363/* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use 364 * its value in jiffies in the MANIFEST_SYNC state. */ 365static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size, 366 int manifest_sync_timeout) 367{ 368 u8 *block; 369 struct dfu_status dfu_stat_buf; 370 int ret = 0; 371 int need_dfu_state = 1; 372 int is_done = 0; 373 u8 dfu_state = 0; 374 u32 dfu_timeout = 0; 375 int bsize = 0; 376 int blockno = 0; 377 378 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size, 379 manifest_sync_timeout); 380 381 if (!size) { 382 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n"); 383 return -EINVAL; 384 } 385 386 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); 387 if (!block) 388 return -ENOMEM; 389 390 do { 391 if (need_dfu_state) { 392 ret = at76_dfu_get_state(udev, &dfu_state); 393 if (ret < 0) { 394 dev_printk(KERN_ERR, &udev->dev, 395 "cannot get DFU state: %d\n", ret); 396 goto exit; 397 } 398 need_dfu_state = 0; 399 } 400 401 switch (dfu_state) { 402 case STATE_DFU_DOWNLOAD_SYNC: 403 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC"); 404 ret = at76_dfu_get_status(udev, &dfu_stat_buf); 405 if (ret >= 0) { 406 dfu_state = dfu_stat_buf.state; 407 dfu_timeout = at76_get_timeout(&dfu_stat_buf); 408 need_dfu_state = 0; 409 } else 410 dev_printk(KERN_ERR, &udev->dev, 411 "at76_dfu_get_status returned %d\n", 412 ret); 413 break; 414 415 case STATE_DFU_DOWNLOAD_BUSY: 416 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY"); 417 need_dfu_state = 1; 418 419 at76_dbg(DBG_DFU, "DFU: Resetting device"); 420 schedule_timeout_interruptible(dfu_timeout); 421 break; 422 423 case STATE_DFU_DOWNLOAD_IDLE: 424 at76_dbg(DBG_DFU, "DOWNLOAD..."); 425 /* fall through */ 426 case STATE_DFU_IDLE: 427 at76_dbg(DBG_DFU, "DFU IDLE"); 428 429 bsize = min_t(int, size, FW_BLOCK_SIZE); 430 memcpy(block, buf, bsize); 431 at76_dbg(DBG_DFU, "int fw, size left = %5d, " 432 "bsize = %4d, blockno = %2d", size, bsize, 433 blockno); 434 ret = 435 at76_load_int_fw_block(udev, blockno, block, bsize); 436 buf += bsize; 437 size -= bsize; 438 blockno++; 439 440 if (ret != bsize) 441 dev_printk(KERN_ERR, &udev->dev, 442 "at76_load_int_fw_block " 443 "returned %d\n", ret); 444 need_dfu_state = 1; 445 break; 446 447 case STATE_DFU_MANIFEST_SYNC: 448 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC"); 449 450 ret = at76_dfu_get_status(udev, &dfu_stat_buf); 451 if (ret < 0) 452 break; 453 454 dfu_state = dfu_stat_buf.state; 455 dfu_timeout = at76_get_timeout(&dfu_stat_buf); 456 need_dfu_state = 0; 457 458 /* override the timeout from the status response, 459 needed for AT76C505A */ 460 if (manifest_sync_timeout > 0) 461 dfu_timeout = manifest_sync_timeout; 462 463 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase"); 464 schedule_timeout_interruptible(dfu_timeout); 465 break; 466 467 case STATE_DFU_MANIFEST: 468 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST"); 469 is_done = 1; 470 break; 471 472 case STATE_DFU_MANIFEST_WAIT_RESET: 473 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET"); 474 is_done = 1; 475 break; 476 477 case STATE_DFU_UPLOAD_IDLE: 478 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE"); 479 break; 480 481 case STATE_DFU_ERROR: 482 at76_dbg(DBG_DFU, "STATE_DFU_ERROR"); 483 ret = -EPIPE; 484 break; 485 486 default: 487 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state); 488 ret = -EINVAL; 489 break; 490 } 491 } while (!is_done && (ret >= 0)); 492 493exit: 494 kfree(block); 495 if (ret >= 0) 496 ret = 0; 497 498 return ret; 499} 500 501#define HEX2STR_BUFFERS 4 502#define HEX2STR_MAX_LEN 64 503#define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10) 504 505/* Convert binary data into hex string */ 506static char *hex2str(void *buf, int len) 507{ 508 static atomic_t a = ATOMIC_INIT(0); 509 static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1]; 510 char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)]; 511 char *obuf = ret; 512 u8 *ibuf = buf; 513 514 if (len > HEX2STR_MAX_LEN) 515 len = HEX2STR_MAX_LEN; 516 517 if (len <= 0) { 518 ret[0] = '\0'; 519 return ret; 520 } 521 522 while (len--) { 523 *obuf++ = BIN2HEX(*ibuf >> 4); 524 *obuf++ = BIN2HEX(*ibuf & 0xf); 525 *obuf++ = '-'; 526 ibuf++; 527 } 528 *(--obuf) = '\0'; 529 530 return ret; 531} 532 533/* LED trigger */ 534static int tx_activity; 535static void at76_ledtrig_tx_timerfunc(unsigned long data); 536static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0); 537DEFINE_LED_TRIGGER(ledtrig_tx); 538 539static void at76_ledtrig_tx_timerfunc(unsigned long data) 540{ 541 static int tx_lastactivity; 542 543 if (tx_lastactivity != tx_activity) { 544 tx_lastactivity = tx_activity; 545 led_trigger_event(ledtrig_tx, LED_FULL); 546 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4); 547 } else 548 led_trigger_event(ledtrig_tx, LED_OFF); 549} 550 551static void at76_ledtrig_tx_activity(void) 552{ 553 tx_activity++; 554 if (!timer_pending(&ledtrig_tx_timer)) 555 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4); 556} 557 558static int at76_remap(struct usb_device *udev) 559{ 560 int ret; 561 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a, 562 USB_TYPE_VENDOR | USB_DIR_OUT | 563 USB_RECIP_INTERFACE, 0, 0, NULL, 0, 564 USB_CTRL_GET_TIMEOUT); 565 if (ret < 0) 566 return ret; 567 return 0; 568} 569 570static int at76_get_op_mode(struct usb_device *udev) 571{ 572 int ret; 573 u8 saved; 574 u8 *op_mode; 575 576 op_mode = kmalloc(1, GFP_NOIO); 577 if (!op_mode) 578 return -ENOMEM; 579 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, 580 USB_TYPE_VENDOR | USB_DIR_IN | 581 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1, 582 USB_CTRL_GET_TIMEOUT); 583 saved = *op_mode; 584 kfree(op_mode); 585 586 if (ret < 0) 587 return ret; 588 else if (ret < 1) 589 return -EIO; 590 else 591 return saved; 592} 593 594/* Load a block of the second ("external") part of the firmware */ 595static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno, 596 void *block, int size) 597{ 598 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, 599 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 600 0x0802, blockno, block, size, 601 USB_CTRL_GET_TIMEOUT); 602} 603 604static inline int at76_get_hw_cfg(struct usb_device *udev, 605 union at76_hwcfg *buf, int buf_size) 606{ 607 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, 608 USB_TYPE_VENDOR | USB_DIR_IN | 609 USB_RECIP_INTERFACE, 0x0a02, 0, 610 buf, buf_size, USB_CTRL_GET_TIMEOUT); 611} 612 613/* Intersil boards use a different "value" for GetHWConfig requests */ 614static inline int at76_get_hw_cfg_intersil(struct usb_device *udev, 615 union at76_hwcfg *buf, int buf_size) 616{ 617 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, 618 USB_TYPE_VENDOR | USB_DIR_IN | 619 USB_RECIP_INTERFACE, 0x0902, 0, 620 buf, buf_size, USB_CTRL_GET_TIMEOUT); 621} 622 623/* Get the hardware configuration for the adapter and put it to the appropriate 624 * fields of 'priv' (the GetHWConfig request and interpretation of the result 625 * depends on the board type) */ 626static int at76_get_hw_config(struct at76_priv *priv) 627{ 628 int ret; 629 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL); 630 631 if (!hwcfg) 632 return -ENOMEM; 633 634 if (at76_is_intersil(priv->board_type)) { 635 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg, 636 sizeof(hwcfg->i)); 637 if (ret < 0) 638 goto exit; 639 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN); 640 priv->regulatory_domain = hwcfg->i.regulatory_domain; 641 } else if (at76_is_503rfmd(priv->board_type)) { 642 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3)); 643 if (ret < 0) 644 goto exit; 645 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN); 646 priv->regulatory_domain = hwcfg->r3.regulatory_domain; 647 } else { 648 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5)); 649 if (ret < 0) 650 goto exit; 651 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN); 652 priv->regulatory_domain = hwcfg->r5.regulatory_domain; 653 } 654 655exit: 656 kfree(hwcfg); 657 if (ret < 0) 658 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n", 659 ret); 660 661 return ret; 662} 663 664static struct reg_domain const *at76_get_reg_domain(u16 code) 665{ 666 int i; 667 static struct reg_domain const fd_tab[] = { 668 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */ 669 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */ 670 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */ 671 { 0x31, "Spain", 0x600 }, /* ch 10-11 */ 672 { 0x32, "France", 0x1e00 }, /* ch 10-13 */ 673 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */ 674 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */ 675 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */ 676 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */ 677 }; 678 679 /* Last entry is fallback for unknown domain code */ 680 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++) 681 if (code == fd_tab[i].code) 682 break; 683 684 return &fd_tab[i]; 685} 686 687static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf, 688 int buf_size) 689{ 690 int ret; 691 692 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, 693 USB_TYPE_VENDOR | USB_DIR_IN | 694 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size, 695 USB_CTRL_GET_TIMEOUT); 696 if (ret >= 0 && ret != buf_size) 697 return -EIO; 698 return ret; 699} 700 701/* Return positive number for status, negative for an error */ 702static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd) 703{ 704 u8 *stat_buf; 705 int ret; 706 707 stat_buf = kmalloc(40, GFP_NOIO); 708 if (!stat_buf) 709 return -ENOMEM; 710 711 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22, 712 USB_TYPE_VENDOR | USB_DIR_IN | 713 USB_RECIP_INTERFACE, cmd, 0, stat_buf, 714 40, USB_CTRL_GET_TIMEOUT); 715 if (ret >= 0) 716 ret = stat_buf[5]; 717 kfree(stat_buf); 718 719 return ret; 720} 721 722#define MAKE_CMD_CASE(c) case (c): return #c 723static const char *at76_get_cmd_string(u8 cmd_status) 724{ 725 switch (cmd_status) { 726 MAKE_CMD_CASE(CMD_SET_MIB); 727 MAKE_CMD_CASE(CMD_GET_MIB); 728 MAKE_CMD_CASE(CMD_SCAN); 729 MAKE_CMD_CASE(CMD_JOIN); 730 MAKE_CMD_CASE(CMD_START_IBSS); 731 MAKE_CMD_CASE(CMD_RADIO_ON); 732 MAKE_CMD_CASE(CMD_RADIO_OFF); 733 MAKE_CMD_CASE(CMD_STARTUP); 734 } 735 736 return "UNKNOWN"; 737} 738 739static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf, 740 int buf_size) 741{ 742 int ret; 743 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) + 744 buf_size, GFP_KERNEL); 745 746 if (!cmd_buf) 747 return -ENOMEM; 748 749 cmd_buf->cmd = cmd; 750 cmd_buf->reserved = 0; 751 cmd_buf->size = cpu_to_le16(buf_size); 752 memcpy(cmd_buf->data, buf, buf_size); 753 754 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size, 755 "issuing command %s (0x%02x)", 756 at76_get_cmd_string(cmd), cmd); 757 758 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, 759 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 760 0, 0, cmd_buf, 761 sizeof(struct at76_command) + buf_size, 762 USB_CTRL_GET_TIMEOUT); 763 kfree(cmd_buf); 764 return ret; 765} 766 767#define MAKE_CMD_STATUS_CASE(c) case (c): return #c 768static const char *at76_get_cmd_status_string(u8 cmd_status) 769{ 770 switch (cmd_status) { 771 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE); 772 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE); 773 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN); 774 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER); 775 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED); 776 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT); 777 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS); 778 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE); 779 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED); 780 } 781 782 return "UNKNOWN"; 783} 784 785/* Wait until the command is completed */ 786static int at76_wait_completion(struct at76_priv *priv, int cmd) 787{ 788 int status = 0; 789 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT; 790 791 do { 792 status = at76_get_cmd_status(priv->udev, cmd); 793 if (status < 0) { 794 wiphy_err(priv->hw->wiphy, 795 "at76_get_cmd_status failed: %d\n", 796 status); 797 break; 798 } 799 800 at76_dbg(DBG_WAIT_COMPLETE, 801 "%s: Waiting on cmd %d, status = %d (%s)", 802 wiphy_name(priv->hw->wiphy), cmd, status, 803 at76_get_cmd_status_string(status)); 804 805 if (status != CMD_STATUS_IN_PROGRESS 806 && status != CMD_STATUS_IDLE) 807 break; 808 809 schedule_timeout_interruptible(HZ / 10); /* 100 ms */ 810 if (time_after(jiffies, timeout)) { 811 wiphy_err(priv->hw->wiphy, 812 "completion timeout for command %d\n", cmd); 813 status = -ETIMEDOUT; 814 break; 815 } 816 } while (1); 817 818 return status; 819} 820 821static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf) 822{ 823 int ret; 824 825 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf, 826 offsetof(struct set_mib_buffer, 827 data) + buf->size); 828 if (ret < 0) 829 return ret; 830 831 ret = at76_wait_completion(priv, CMD_SET_MIB); 832 if (ret != CMD_STATUS_COMPLETE) { 833 wiphy_info(priv->hw->wiphy, 834 "set_mib: at76_wait_completion failed with %d\n", 835 ret); 836 ret = -EIO; 837 } 838 839 return ret; 840} 841 842/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */ 843static int at76_set_radio(struct at76_priv *priv, int enable) 844{ 845 int ret; 846 int cmd; 847 848 if (priv->radio_on == enable) 849 return 0; 850 851 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF; 852 853 ret = at76_set_card_command(priv->udev, cmd, NULL, 0); 854 if (ret < 0) 855 wiphy_err(priv->hw->wiphy, 856 "at76_set_card_command(%d) failed: %d\n", cmd, ret); 857 else 858 ret = 1; 859 860 priv->radio_on = enable; 861 return ret; 862} 863 864/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */ 865static int at76_set_pm_mode(struct at76_priv *priv) 866{ 867 int ret = 0; 868 869 priv->mib_buf.type = MIB_MAC_MGMT; 870 priv->mib_buf.size = 1; 871 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode); 872 priv->mib_buf.data.byte = priv->pm_mode; 873 874 ret = at76_set_mib(priv, &priv->mib_buf); 875 if (ret < 0) 876 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n", 877 ret); 878 879 return ret; 880} 881 882static int at76_set_preamble(struct at76_priv *priv, u8 type) 883{ 884 int ret = 0; 885 886 priv->mib_buf.type = MIB_LOCAL; 887 priv->mib_buf.size = 1; 888 priv->mib_buf.index = offsetof(struct mib_local, preamble_type); 889 priv->mib_buf.data.byte = type; 890 891 ret = at76_set_mib(priv, &priv->mib_buf); 892 if (ret < 0) 893 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n", 894 ret); 895 896 return ret; 897} 898 899static int at76_set_frag(struct at76_priv *priv, u16 size) 900{ 901 int ret = 0; 902 903 priv->mib_buf.type = MIB_MAC; 904 priv->mib_buf.size = 2; 905 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold); 906 priv->mib_buf.data.word = cpu_to_le16(size); 907 908 ret = at76_set_mib(priv, &priv->mib_buf); 909 if (ret < 0) 910 wiphy_err(priv->hw->wiphy, 911 "set_mib (frag threshold) failed: %d\n", ret); 912 913 return ret; 914} 915 916static int at76_set_rts(struct at76_priv *priv, u16 size) 917{ 918 int ret = 0; 919 920 priv->mib_buf.type = MIB_MAC; 921 priv->mib_buf.size = 2; 922 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold); 923 priv->mib_buf.data.word = cpu_to_le16(size); 924 925 ret = at76_set_mib(priv, &priv->mib_buf); 926 if (ret < 0) 927 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret); 928 929 return ret; 930} 931 932static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff) 933{ 934 int ret = 0; 935 936 priv->mib_buf.type = MIB_LOCAL; 937 priv->mib_buf.size = 1; 938 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback); 939 priv->mib_buf.data.byte = onoff; 940 941 ret = at76_set_mib(priv, &priv->mib_buf); 942 if (ret < 0) 943 wiphy_err(priv->hw->wiphy, 944 "set_mib (autorate fallback) failed: %d\n", ret); 945 946 return ret; 947} 948 949static void at76_dump_mib_mac_addr(struct at76_priv *priv) 950{ 951 int i; 952 int ret; 953 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr), 954 GFP_KERNEL); 955 956 if (!m) 957 return; 958 959 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m, 960 sizeof(struct mib_mac_addr)); 961 if (ret < 0) { 962 wiphy_err(priv->hw->wiphy, 963 "at76_get_mib (MAC_ADDR) failed: %d\n", ret); 964 goto exit; 965 } 966 967 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x", 968 wiphy_name(priv->hw->wiphy), 969 m->mac_addr, m->res[0], m->res[1]); 970 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++) 971 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, " 972 "status %d", wiphy_name(priv->hw->wiphy), i, 973 m->group_addr[i], m->group_addr_status[i]); 974exit: 975 kfree(m); 976} 977 978static void at76_dump_mib_mac_wep(struct at76_priv *priv) 979{ 980 int i; 981 int ret; 982 int key_len; 983 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL); 984 985 if (!m) 986 return; 987 988 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m, 989 sizeof(struct mib_mac_wep)); 990 if (ret < 0) { 991 wiphy_err(priv->hw->wiphy, 992 "at76_get_mib (MAC_WEP) failed: %d\n", ret); 993 goto exit; 994 } 995 996 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u " 997 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u " 998 "encr_level %u key %d", wiphy_name(priv->hw->wiphy), 999 m->privacy_invoked, m->wep_default_key_id, 1000 m->wep_key_mapping_len, m->exclude_unencrypted, 1001 le32_to_cpu(m->wep_icv_error_count), 1002 le32_to_cpu(m->wep_excluded_count), m->encryption_level, 1003 m->wep_default_key_id); 1004 1005 key_len = (m->encryption_level == 1) ? 1006 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN; 1007 1008 for (i = 0; i < WEP_KEYS; i++) 1009 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s", 1010 wiphy_name(priv->hw->wiphy), i, 1011 hex2str(m->wep_default_keyvalue[i], key_len)); 1012exit: 1013 kfree(m); 1014} 1015 1016static void at76_dump_mib_mac_mgmt(struct at76_priv *priv) 1017{ 1018 int ret; 1019 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt), 1020 GFP_KERNEL); 1021 1022 if (!m) 1023 return; 1024 1025 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m, 1026 sizeof(struct mib_mac_mgmt)); 1027 if (ret < 0) { 1028 wiphy_err(priv->hw->wiphy, 1029 "at76_get_mib (MAC_MGMT) failed: %d\n", ret); 1030 goto exit; 1031 } 1032 1033 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration " 1034 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d " 1035 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d " 1036 "current_bssid %pM current_essid %s current_bss_type %d " 1037 "pm_mode %d ibss_change %d res %d " 1038 "multi_domain_capability_implemented %d " 1039 "international_roaming %d country_string %.3s", 1040 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period), 1041 le16_to_cpu(m->CFP_max_duration), 1042 le16_to_cpu(m->medium_occupancy_limit), 1043 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window), 1044 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period, 1045 m->CFP_period, m->current_bssid, 1046 hex2str(m->current_essid, IW_ESSID_MAX_SIZE), 1047 m->current_bss_type, m->power_mgmt_mode, m->ibss_change, 1048 m->res, m->multi_domain_capability_implemented, 1049 m->multi_domain_capability_enabled, m->country_string); 1050exit: 1051 kfree(m); 1052} 1053 1054static void at76_dump_mib_mac(struct at76_priv *priv) 1055{ 1056 int ret; 1057 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL); 1058 1059 if (!m) 1060 return; 1061 1062 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac)); 1063 if (ret < 0) { 1064 wiphy_err(priv->hw->wiphy, 1065 "at76_get_mib (MAC) failed: %d\n", ret); 1066 goto exit; 1067 } 1068 1069 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d " 1070 "max_rx_lifetime %d frag_threshold %d rts_threshold %d " 1071 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d " 1072 "scan_type %d scan_channel %d probe_delay %u " 1073 "min_channel_time %d max_channel_time %d listen_int %d " 1074 "desired_ssid %s desired_bssid %pM desired_bsstype %d", 1075 wiphy_name(priv->hw->wiphy), 1076 le32_to_cpu(m->max_tx_msdu_lifetime), 1077 le32_to_cpu(m->max_rx_lifetime), 1078 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold), 1079 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax), 1080 m->short_retry_time, m->long_retry_time, m->scan_type, 1081 m->scan_channel, le16_to_cpu(m->probe_delay), 1082 le16_to_cpu(m->min_channel_time), 1083 le16_to_cpu(m->max_channel_time), 1084 le16_to_cpu(m->listen_interval), 1085 hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE), 1086 m->desired_bssid, m->desired_bsstype); 1087exit: 1088 kfree(m); 1089} 1090 1091static void at76_dump_mib_phy(struct at76_priv *priv) 1092{ 1093 int ret; 1094 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL); 1095 1096 if (!m) 1097 return; 1098 1099 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy)); 1100 if (ret < 0) { 1101 wiphy_err(priv->hw->wiphy, 1102 "at76_get_mib (PHY) failed: %d\n", ret); 1103 goto exit; 1104 } 1105 1106 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d " 1107 "sifs_time %d preamble_length %d plcp_header_length %d " 1108 "mpdu_max_length %d cca_mode_supported %d operation_rate_set " 1109 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d " 1110 "phy_type %d current_reg_domain %d", 1111 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold), 1112 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time), 1113 le16_to_cpu(m->preamble_length), 1114 le16_to_cpu(m->plcp_header_length), 1115 le16_to_cpu(m->mpdu_max_length), 1116 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0], 1117 m->operation_rate_set[1], m->operation_rate_set[2], 1118 m->operation_rate_set[3], m->channel_id, m->current_cca_mode, 1119 m->phy_type, m->current_reg_domain); 1120exit: 1121 kfree(m); 1122} 1123 1124static void at76_dump_mib_local(struct at76_priv *priv) 1125{ 1126 int ret; 1127 struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL); 1128 1129 if (!m) 1130 return; 1131 1132 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local)); 1133 if (ret < 0) { 1134 wiphy_err(priv->hw->wiphy, 1135 "at76_get_mib (LOCAL) failed: %d\n", ret); 1136 goto exit; 1137 } 1138 1139 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d " 1140 "txautorate_fallback %d ssid_size %d promiscuous_mode %d " 1141 "preamble_type %d", wiphy_name(priv->hw->wiphy), 1142 m->beacon_enable, 1143 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode, 1144 m->preamble_type); 1145exit: 1146 kfree(m); 1147} 1148 1149static void at76_dump_mib_mdomain(struct at76_priv *priv) 1150{ 1151 int ret; 1152 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL); 1153 1154 if (!m) 1155 return; 1156 1157 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m, 1158 sizeof(struct mib_mdomain)); 1159 if (ret < 0) { 1160 wiphy_err(priv->hw->wiphy, 1161 "at76_get_mib (MDOMAIN) failed: %d\n", ret); 1162 goto exit; 1163 } 1164 1165 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s", 1166 wiphy_name(priv->hw->wiphy), 1167 hex2str(m->channel_list, sizeof(m->channel_list))); 1168 1169 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s", 1170 wiphy_name(priv->hw->wiphy), 1171 hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel))); 1172exit: 1173 kfree(m); 1174} 1175 1176/* Enable monitor mode */ 1177static int at76_start_monitor(struct at76_priv *priv) 1178{ 1179 struct at76_req_scan scan; 1180 int ret; 1181 1182 memset(&scan, 0, sizeof(struct at76_req_scan)); 1183 memset(scan.bssid, 0xff, ETH_ALEN); 1184 1185 scan.channel = priv->channel; 1186 scan.scan_type = SCAN_TYPE_PASSIVE; 1187 scan.international_scan = 0; 1188 scan.min_channel_time = cpu_to_le16(priv->scan_min_time); 1189 scan.max_channel_time = cpu_to_le16(priv->scan_max_time); 1190 scan.probe_delay = cpu_to_le16(0); 1191 1192 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); 1193 if (ret >= 0) 1194 ret = at76_get_cmd_status(priv->udev, CMD_SCAN); 1195 1196 return ret; 1197} 1198 1199/* Calculate padding from txbuf->wlength (which excludes the USB TX header), 1200 likely to compensate a flaw in the AT76C503A USB part ... */ 1201static inline int at76_calc_padding(int wlen) 1202{ 1203 /* add the USB TX header */ 1204 wlen += AT76_TX_HDRLEN; 1205 1206 wlen = wlen % 64; 1207 1208 if (wlen < 50) 1209 return 50 - wlen; 1210 1211 if (wlen >= 61) 1212 return 64 + 50 - wlen; 1213 1214 return 0; 1215} 1216 1217static void at76_rx_callback(struct urb *urb) 1218{ 1219 struct at76_priv *priv = urb->context; 1220 1221 priv->rx_tasklet.data = (unsigned long)urb; 1222 tasklet_schedule(&priv->rx_tasklet); 1223} 1224 1225static int at76_submit_rx_urb(struct at76_priv *priv) 1226{ 1227 int ret; 1228 int size; 1229 struct sk_buff *skb = priv->rx_skb; 1230 1231 if (!priv->rx_urb) { 1232 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n", 1233 __func__); 1234 return -EFAULT; 1235 } 1236 1237 if (!skb) { 1238 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer)); 1239 if (!skb) { 1240 wiphy_err(priv->hw->wiphy, 1241 "cannot allocate rx skbuff\n"); 1242 ret = -ENOMEM; 1243 goto exit; 1244 } 1245 priv->rx_skb = skb; 1246 } else { 1247 skb_push(skb, skb_headroom(skb)); 1248 skb_trim(skb, 0); 1249 } 1250 1251 size = skb_tailroom(skb); 1252 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe, 1253 skb_put(skb, size), size, at76_rx_callback, priv); 1254 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC); 1255 if (ret < 0) { 1256 if (ret == -ENODEV) 1257 at76_dbg(DBG_DEVSTART, 1258 "usb_submit_urb returned -ENODEV"); 1259 else 1260 wiphy_err(priv->hw->wiphy, 1261 "rx, usb_submit_urb failed: %d\n", ret); 1262 } 1263 1264exit: 1265 if (ret < 0 && ret != -ENODEV) 1266 wiphy_err(priv->hw->wiphy, 1267 "cannot submit rx urb - please unload the driver and/or power cycle the device\n"); 1268 1269 return ret; 1270} 1271 1272/* Download external firmware */ 1273static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe) 1274{ 1275 int ret; 1276 int op_mode; 1277 int blockno = 0; 1278 int bsize; 1279 u8 *block; 1280 u8 *buf = fwe->extfw; 1281 int size = fwe->extfw_size; 1282 1283 if (!buf || !size) 1284 return -ENOENT; 1285 1286 op_mode = at76_get_op_mode(udev); 1287 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); 1288 1289 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { 1290 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n", 1291 op_mode); 1292 return -EINVAL; 1293 } 1294 1295 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); 1296 if (!block) 1297 return -ENOMEM; 1298 1299 at76_dbg(DBG_DEVSTART, "downloading external firmware"); 1300 1301 /* for fw >= 0.100, the device needs an extra empty block */ 1302 do { 1303 bsize = min_t(int, size, FW_BLOCK_SIZE); 1304 memcpy(block, buf, bsize); 1305 at76_dbg(DBG_DEVSTART, 1306 "ext fw, size left = %5d, bsize = %4d, blockno = %2d", 1307 size, bsize, blockno); 1308 ret = at76_load_ext_fw_block(udev, blockno, block, bsize); 1309 if (ret != bsize) { 1310 dev_printk(KERN_ERR, &udev->dev, 1311 "loading %dth firmware block failed: %d\n", 1312 blockno, ret); 1313 goto exit; 1314 } 1315 buf += bsize; 1316 size -= bsize; 1317 blockno++; 1318 } while (bsize > 0); 1319 1320 if (at76_is_505a(fwe->board_type)) { 1321 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a"); 1322 schedule_timeout_interruptible(HZ / 5 + 1); 1323 } 1324 1325exit: 1326 kfree(block); 1327 if (ret < 0) 1328 dev_printk(KERN_ERR, &udev->dev, 1329 "downloading external firmware failed: %d\n", ret); 1330 return ret; 1331} 1332 1333/* Download internal firmware */ 1334static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe) 1335{ 1336 int ret; 1337 int need_remap = !at76_is_505a(fwe->board_type); 1338 1339 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size, 1340 need_remap ? 0 : 2 * HZ); 1341 1342 if (ret < 0) { 1343 dev_printk(KERN_ERR, &udev->dev, 1344 "downloading internal fw failed with %d\n", ret); 1345 goto exit; 1346 } 1347 1348 at76_dbg(DBG_DEVSTART, "sending REMAP"); 1349 1350 /* no REMAP for 505A (see SF driver) */ 1351 if (need_remap) { 1352 ret = at76_remap(udev); 1353 if (ret < 0) { 1354 dev_printk(KERN_ERR, &udev->dev, 1355 "sending REMAP failed with %d\n", ret); 1356 goto exit; 1357 } 1358 } 1359 1360 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds"); 1361 schedule_timeout_interruptible(2 * HZ + 1); 1362 usb_reset_device(udev); 1363 1364exit: 1365 return ret; 1366} 1367 1368static int at76_startup_device(struct at76_priv *priv) 1369{ 1370 struct at76_card_config *ccfg = &priv->card_config; 1371 int ret; 1372 1373 at76_dbg(DBG_PARAMS, 1374 "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d " 1375 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size, 1376 priv->essid, hex2str(priv->essid, IW_ESSID_MAX_SIZE), 1377 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra", 1378 priv->channel, priv->wep_enabled ? "enabled" : "disabled", 1379 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]); 1380 at76_dbg(DBG_PARAMS, 1381 "%s param: preamble %s rts %d retry %d frag %d " 1382 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy), 1383 preambles[priv->preamble_type], priv->rts_threshold, 1384 priv->short_retry_limit, priv->frag_threshold, 1385 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate == 1386 TX_RATE_2MBIT ? "2MBit" : priv->txrate == 1387 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate == 1388 TX_RATE_11MBIT ? "11MBit" : priv->txrate == 1389 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode); 1390 at76_dbg(DBG_PARAMS, 1391 "%s param: pm_mode %d pm_period %d auth_mode %s " 1392 "scan_times %d %d scan_mode %s", 1393 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period, 1394 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret", 1395 priv->scan_min_time, priv->scan_max_time, 1396 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive"); 1397 1398 memset(ccfg, 0, sizeof(struct at76_card_config)); 1399 ccfg->promiscuous_mode = 0; 1400 ccfg->short_retry_limit = priv->short_retry_limit; 1401 1402 if (priv->wep_enabled) { 1403 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN) 1404 ccfg->encryption_type = 2; 1405 else 1406 ccfg->encryption_type = 1; 1407 1408 /* jal: always exclude unencrypted if WEP is active */ 1409 ccfg->exclude_unencrypted = 1; 1410 } else { 1411 ccfg->exclude_unencrypted = 0; 1412 ccfg->encryption_type = 0; 1413 } 1414 1415 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold); 1416 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold); 1417 1418 memcpy(ccfg->basic_rate_set, hw_rates, 4); 1419 /* jal: really needed, we do a set_mib for autorate later ??? */ 1420 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0); 1421 ccfg->channel = priv->channel; 1422 ccfg->privacy_invoked = priv->wep_enabled; 1423 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE); 1424 ccfg->ssid_len = priv->essid_size; 1425 1426 ccfg->wep_default_key_id = priv->wep_key_id; 1427 memcpy(ccfg->wep_default_key_value, priv->wep_keys, 1428 sizeof(priv->wep_keys)); 1429 1430 ccfg->short_preamble = priv->preamble_type; 1431 ccfg->beacon_period = cpu_to_le16(priv->beacon_period); 1432 1433 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config, 1434 sizeof(struct at76_card_config)); 1435 if (ret < 0) { 1436 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n", 1437 ret); 1438 return ret; 1439 } 1440 1441 at76_wait_completion(priv, CMD_STARTUP); 1442 1443 /* remove BSSID from previous run */ 1444 memset(priv->bssid, 0, ETH_ALEN); 1445 1446 if (at76_set_radio(priv, 1) == 1) 1447 at76_wait_completion(priv, CMD_RADIO_ON); 1448 1449 ret = at76_set_preamble(priv, priv->preamble_type); 1450 if (ret < 0) 1451 return ret; 1452 1453 ret = at76_set_frag(priv, priv->frag_threshold); 1454 if (ret < 0) 1455 return ret; 1456 1457 ret = at76_set_rts(priv, priv->rts_threshold); 1458 if (ret < 0) 1459 return ret; 1460 1461 ret = at76_set_autorate_fallback(priv, 1462 priv->txrate == TX_RATE_AUTO ? 1 : 0); 1463 if (ret < 0) 1464 return ret; 1465 1466 ret = at76_set_pm_mode(priv); 1467 if (ret < 0) 1468 return ret; 1469 1470 if (at76_debug & DBG_MIB) { 1471 at76_dump_mib_mac(priv); 1472 at76_dump_mib_mac_addr(priv); 1473 at76_dump_mib_mac_mgmt(priv); 1474 at76_dump_mib_mac_wep(priv); 1475 at76_dump_mib_mdomain(priv); 1476 at76_dump_mib_phy(priv); 1477 at76_dump_mib_local(priv); 1478 } 1479 1480 return 0; 1481} 1482 1483/* Enable or disable promiscuous mode */ 1484static void at76_work_set_promisc(struct work_struct *work) 1485{ 1486 struct at76_priv *priv = container_of(work, struct at76_priv, 1487 work_set_promisc); 1488 int ret = 0; 1489 1490 if (priv->device_unplugged) 1491 return; 1492 1493 mutex_lock(&priv->mtx); 1494 1495 priv->mib_buf.type = MIB_LOCAL; 1496 priv->mib_buf.size = 1; 1497 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode); 1498 priv->mib_buf.data.byte = priv->promisc ? 1 : 0; 1499 1500 ret = at76_set_mib(priv, &priv->mib_buf); 1501 if (ret < 0) 1502 wiphy_err(priv->hw->wiphy, 1503 "set_mib (promiscuous_mode) failed: %d\n", ret); 1504 1505 mutex_unlock(&priv->mtx); 1506} 1507 1508/* Submit Rx urb back to the device */ 1509static void at76_work_submit_rx(struct work_struct *work) 1510{ 1511 struct at76_priv *priv = container_of(work, struct at76_priv, 1512 work_submit_rx); 1513 1514 mutex_lock(&priv->mtx); 1515 at76_submit_rx_urb(priv); 1516 mutex_unlock(&priv->mtx); 1517} 1518 1519static void at76_rx_tasklet(unsigned long param) 1520{ 1521 struct urb *urb = (struct urb *)param; 1522 struct at76_priv *priv = urb->context; 1523 struct at76_rx_buffer *buf; 1524 struct ieee80211_rx_status rx_status = { 0 }; 1525 1526 if (priv->device_unplugged) { 1527 at76_dbg(DBG_DEVSTART, "device unplugged"); 1528 if (urb) 1529 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status); 1530 return; 1531 } 1532 1533 if (!priv->rx_skb || !priv->rx_skb->data) 1534 return; 1535 1536 buf = (struct at76_rx_buffer *)priv->rx_skb->data; 1537 1538 if (urb->status != 0) { 1539 if (urb->status != -ENOENT && urb->status != -ECONNRESET) 1540 at76_dbg(DBG_URB, 1541 "%s %s: - nonzero Rx bulk status received: %d", 1542 __func__, wiphy_name(priv->hw->wiphy), 1543 urb->status); 1544 return; 1545 } 1546 1547 at76_dbg(DBG_RX_ATMEL_HDR, 1548 "%s: rx frame: rate %d rssi %d noise %d link %d", 1549 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi, 1550 buf->noise_level, buf->link_quality); 1551 1552 skb_pull(priv->rx_skb, AT76_RX_HDRLEN); 1553 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength)); 1554 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data, 1555 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len); 1556 1557 rx_status.signal = buf->rssi; 1558 rx_status.flag |= RX_FLAG_DECRYPTED; 1559 rx_status.flag |= RX_FLAG_IV_STRIPPED; 1560 1561 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d", 1562 priv->rx_skb->len, priv->rx_skb->data_len); 1563 memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status)); 1564 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb); 1565 1566 /* Use a new skb for the next receive */ 1567 priv->rx_skb = NULL; 1568 1569 at76_submit_rx_urb(priv); 1570} 1571 1572/* Load firmware into kernel memory and parse it */ 1573static struct fwentry *at76_load_firmware(struct usb_device *udev, 1574 enum board_type board_type) 1575{ 1576 int ret; 1577 char *str; 1578 struct at76_fw_header *fwh; 1579 struct fwentry *fwe = &firmwares[board_type]; 1580 1581 mutex_lock(&fw_mutex); 1582 1583 if (fwe->loaded) { 1584 at76_dbg(DBG_FW, "re-using previously loaded fw"); 1585 goto exit; 1586 } 1587 1588 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname); 1589 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev); 1590 if (ret < 0) { 1591 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n", 1592 fwe->fwname); 1593 dev_printk(KERN_ERR, &udev->dev, 1594 "you may need to download the firmware from " 1595 "http://developer.berlios.de/projects/at76c503a/\n"); 1596 goto exit; 1597 } 1598 1599 at76_dbg(DBG_FW, "got it."); 1600 fwh = (struct at76_fw_header *)(fwe->fw->data); 1601 1602 if (fwe->fw->size <= sizeof(*fwh)) { 1603 dev_printk(KERN_ERR, &udev->dev, 1604 "firmware is too short (0x%zx)\n", fwe->fw->size); 1605 goto exit; 1606 } 1607 1608 /* CRC currently not checked */ 1609 fwe->board_type = le32_to_cpu(fwh->board_type); 1610 if (fwe->board_type != board_type) { 1611 dev_printk(KERN_ERR, &udev->dev, 1612 "board type mismatch, requested %u, got %u\n", 1613 board_type, fwe->board_type); 1614 goto exit; 1615 } 1616 1617 fwe->fw_version.major = fwh->major; 1618 fwe->fw_version.minor = fwh->minor; 1619 fwe->fw_version.patch = fwh->patch; 1620 fwe->fw_version.build = fwh->build; 1621 1622 str = (char *)fwh + le32_to_cpu(fwh->str_offset); 1623 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset); 1624 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len); 1625 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset); 1626 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len); 1627 1628 fwe->loaded = 1; 1629 1630 dev_printk(KERN_DEBUG, &udev->dev, 1631 "using firmware %s (version %d.%d.%d-%d)\n", 1632 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build); 1633 1634 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type, 1635 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len), 1636 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len)); 1637 at76_dbg(DBG_DEVSTART, "firmware id %s", str); 1638 1639exit: 1640 mutex_unlock(&fw_mutex); 1641 1642 if (fwe->loaded) 1643 return fwe; 1644 else 1645 return NULL; 1646} 1647 1648static int at76_join(struct at76_priv *priv) 1649{ 1650 struct at76_req_join join; 1651 int ret; 1652 1653 memset(&join, 0, sizeof(struct at76_req_join)); 1654 memcpy(join.essid, priv->essid, priv->essid_size); 1655 join.essid_size = priv->essid_size; 1656 memcpy(join.bssid, priv->bssid, ETH_ALEN); 1657 join.bss_type = INFRASTRUCTURE_MODE; 1658 join.channel = priv->channel; 1659 join.timeout = cpu_to_le16(2000); 1660 1661 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__); 1662 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join, 1663 sizeof(struct at76_req_join)); 1664 1665 if (ret < 0) { 1666 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n", 1667 ret); 1668 return 0; 1669 } 1670 1671 ret = at76_wait_completion(priv, CMD_JOIN); 1672 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret); 1673 if (ret != CMD_STATUS_COMPLETE) { 1674 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n", 1675 ret); 1676 return 0; 1677 } 1678 1679 at76_set_pm_mode(priv); 1680 1681 return 0; 1682} 1683 1684static void at76_work_join_bssid(struct work_struct *work) 1685{ 1686 struct at76_priv *priv = container_of(work, struct at76_priv, 1687 work_join_bssid); 1688 1689 if (priv->device_unplugged) 1690 return; 1691 1692 mutex_lock(&priv->mtx); 1693 1694 if (is_valid_ether_addr(priv->bssid)) 1695 at76_join(priv); 1696 1697 mutex_unlock(&priv->mtx); 1698} 1699 1700static void at76_mac80211_tx_callback(struct urb *urb) 1701{ 1702 struct at76_priv *priv = urb->context; 1703 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 1704 1705 at76_dbg(DBG_MAC80211, "%s()", __func__); 1706 1707 switch (urb->status) { 1708 case 0: 1709 /* success */ 1710 info->flags |= IEEE80211_TX_STAT_ACK; 1711 break; 1712 case -ENOENT: 1713 case -ECONNRESET: 1714 /* fail, urb has been unlinked */ 1715 break; 1716 default: 1717 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d", 1718 __func__, urb->status); 1719 break; 1720 } 1721 1722 memset(&info->status, 0, sizeof(info->status)); 1723 1724 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 1725 1726 priv->tx_skb = NULL; 1727 1728 ieee80211_wake_queues(priv->hw); 1729} 1730 1731static int at76_mac80211_tx(struct ieee80211_hw *hw, struct sk_buff *skb) 1732{ 1733 struct at76_priv *priv = hw->priv; 1734 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer; 1735 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1736 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1737 int padding, submit_len, ret; 1738 1739 at76_dbg(DBG_MAC80211, "%s()", __func__); 1740 1741 if (priv->tx_urb->status == -EINPROGRESS) { 1742 wiphy_err(priv->hw->wiphy, 1743 "%s called while tx urb is pending\n", __func__); 1744 return NETDEV_TX_BUSY; 1745 } 1746 1747 if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) { 1748 if (compare_ether_addr(priv->bssid, mgmt->bssid)) { 1749 memcpy(priv->bssid, mgmt->bssid, ETH_ALEN); 1750 ieee80211_queue_work(hw, &priv->work_join_bssid); 1751 return NETDEV_TX_BUSY; 1752 } 1753 } 1754 1755 ieee80211_stop_queues(hw); 1756 1757 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */ 1758 1759 WARN_ON(priv->tx_skb != NULL); 1760 1761 priv->tx_skb = skb; 1762 padding = at76_calc_padding(skb->len); 1763 submit_len = AT76_TX_HDRLEN + skb->len + padding; 1764 1765 /* setup 'Atmel' header */ 1766 memset(tx_buffer, 0, sizeof(*tx_buffer)); 1767 tx_buffer->padding = padding; 1768 tx_buffer->wlength = cpu_to_le16(skb->len); 1769 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value; 1770 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved)); 1771 memcpy(tx_buffer->packet, skb->data, skb->len); 1772 1773 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr", 1774 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength), 1775 tx_buffer->padding, tx_buffer->tx_rate); 1776 1777 /* send stuff */ 1778 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len, 1779 "%s(): tx_buffer %d bytes:", __func__, submit_len); 1780 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer, 1781 submit_len, at76_mac80211_tx_callback, priv); 1782 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC); 1783 if (ret) { 1784 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret); 1785 if (ret == -EINVAL) 1786 wiphy_err(priv->hw->wiphy, 1787 "-EINVAL: tx urb %p hcpriv %p complete %p\n", 1788 priv->tx_urb, 1789 priv->tx_urb->hcpriv, priv->tx_urb->complete); 1790 } 1791 1792 return 0; 1793} 1794 1795static int at76_mac80211_start(struct ieee80211_hw *hw) 1796{ 1797 struct at76_priv *priv = hw->priv; 1798 int ret; 1799 1800 at76_dbg(DBG_MAC80211, "%s()", __func__); 1801 1802 mutex_lock(&priv->mtx); 1803 1804 ret = at76_submit_rx_urb(priv); 1805 if (ret < 0) { 1806 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n", 1807 ret); 1808 goto error; 1809 } 1810 1811 at76_startup_device(priv); 1812 1813 at76_start_monitor(priv); 1814 1815error: 1816 mutex_unlock(&priv->mtx); 1817 1818 return 0; 1819} 1820 1821static void at76_mac80211_stop(struct ieee80211_hw *hw) 1822{ 1823 struct at76_priv *priv = hw->priv; 1824 1825 at76_dbg(DBG_MAC80211, "%s()", __func__); 1826 1827 cancel_delayed_work(&priv->dwork_hw_scan); 1828 cancel_work_sync(&priv->work_join_bssid); 1829 cancel_work_sync(&priv->work_set_promisc); 1830 1831 mutex_lock(&priv->mtx); 1832 1833 if (!priv->device_unplugged) { 1834 /* We are called by "ifconfig ethX down", not because the 1835 * device is not available anymore. */ 1836 at76_set_radio(priv, 0); 1837 1838 /* We unlink rx_urb because at76_open() re-submits it. 1839 * If unplugged, at76_delete_device() takes care of it. */ 1840 usb_kill_urb(priv->rx_urb); 1841 } 1842 1843 mutex_unlock(&priv->mtx); 1844} 1845 1846static int at76_add_interface(struct ieee80211_hw *hw, 1847 struct ieee80211_vif *vif) 1848{ 1849 struct at76_priv *priv = hw->priv; 1850 int ret = 0; 1851 1852 at76_dbg(DBG_MAC80211, "%s()", __func__); 1853 1854 mutex_lock(&priv->mtx); 1855 1856 switch (vif->type) { 1857 case NL80211_IFTYPE_STATION: 1858 priv->iw_mode = IW_MODE_INFRA; 1859 break; 1860 default: 1861 ret = -EOPNOTSUPP; 1862 goto exit; 1863 } 1864 1865exit: 1866 mutex_unlock(&priv->mtx); 1867 1868 return ret; 1869} 1870 1871static void at76_remove_interface(struct ieee80211_hw *hw, 1872 struct ieee80211_vif *vif) 1873{ 1874 at76_dbg(DBG_MAC80211, "%s()", __func__); 1875} 1876 1877static void at76_dwork_hw_scan(struct work_struct *work) 1878{ 1879 struct at76_priv *priv = container_of(work, struct at76_priv, 1880 dwork_hw_scan.work); 1881 int ret; 1882 1883 if (priv->device_unplugged) 1884 return; 1885 1886 mutex_lock(&priv->mtx); 1887 1888 ret = at76_get_cmd_status(priv->udev, CMD_SCAN); 1889 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret); 1890 1891 1892 if (ret != CMD_STATUS_COMPLETE) { 1893 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan, 1894 SCAN_POLL_INTERVAL); 1895 mutex_unlock(&priv->mtx); 1896 return; 1897 } 1898 1899 if (is_valid_ether_addr(priv->bssid)) 1900 at76_join(priv); 1901 1902 mutex_unlock(&priv->mtx); 1903 1904 ieee80211_scan_completed(priv->hw, false); 1905 1906 ieee80211_wake_queues(priv->hw); 1907} 1908 1909static int at76_hw_scan(struct ieee80211_hw *hw, 1910 struct ieee80211_vif *vif, 1911 struct cfg80211_scan_request *req) 1912{ 1913 struct at76_priv *priv = hw->priv; 1914 struct at76_req_scan scan; 1915 u8 *ssid = NULL; 1916 int ret, len = 0; 1917 1918 at76_dbg(DBG_MAC80211, "%s():", __func__); 1919 1920 if (priv->device_unplugged) 1921 return 0; 1922 1923 mutex_lock(&priv->mtx); 1924 1925 ieee80211_stop_queues(hw); 1926 1927 memset(&scan, 0, sizeof(struct at76_req_scan)); 1928 memset(scan.bssid, 0xFF, ETH_ALEN); 1929 1930 if (req->n_ssids) { 1931 scan.scan_type = SCAN_TYPE_ACTIVE; 1932 ssid = req->ssids[0].ssid; 1933 len = req->ssids[0].ssid_len; 1934 } else { 1935 scan.scan_type = SCAN_TYPE_PASSIVE; 1936 } 1937 1938 if (len) { 1939 memcpy(scan.essid, ssid, len); 1940 scan.essid_size = len; 1941 } 1942 1943 scan.min_channel_time = cpu_to_le16(priv->scan_min_time); 1944 scan.max_channel_time = cpu_to_le16(priv->scan_max_time); 1945 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000); 1946 scan.international_scan = 0; 1947 1948 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__); 1949 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); 1950 1951 if (ret < 0) { 1952 err("CMD_SCAN failed: %d", ret); 1953 goto exit; 1954 } 1955 1956 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan, 1957 SCAN_POLL_INTERVAL); 1958 1959exit: 1960 mutex_unlock(&priv->mtx); 1961 1962 return 0; 1963} 1964 1965static int at76_config(struct ieee80211_hw *hw, u32 changed) 1966{ 1967 struct at76_priv *priv = hw->priv; 1968 1969 at76_dbg(DBG_MAC80211, "%s(): channel %d", 1970 __func__, hw->conf.channel->hw_value); 1971 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:"); 1972 1973 mutex_lock(&priv->mtx); 1974 1975 priv->channel = hw->conf.channel->hw_value; 1976 1977 if (is_valid_ether_addr(priv->bssid)) 1978 at76_join(priv); 1979 else 1980 at76_start_monitor(priv); 1981 1982 mutex_unlock(&priv->mtx); 1983 1984 return 0; 1985} 1986 1987static void at76_bss_info_changed(struct ieee80211_hw *hw, 1988 struct ieee80211_vif *vif, 1989 struct ieee80211_bss_conf *conf, 1990 u32 changed) 1991{ 1992 struct at76_priv *priv = hw->priv; 1993 1994 at76_dbg(DBG_MAC80211, "%s():", __func__); 1995 1996 if (!(changed & BSS_CHANGED_BSSID)) 1997 return; 1998 1999 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:"); 2000 2001 mutex_lock(&priv->mtx); 2002 2003 memcpy(priv->bssid, conf->bssid, ETH_ALEN); 2004 2005 if (is_valid_ether_addr(priv->bssid)) 2006 /* mac80211 is joining a bss */ 2007 at76_join(priv); 2008 2009 mutex_unlock(&priv->mtx); 2010} 2011 2012/* must be atomic */ 2013static void at76_configure_filter(struct ieee80211_hw *hw, 2014 unsigned int changed_flags, 2015 unsigned int *total_flags, u64 multicast) 2016{ 2017 struct at76_priv *priv = hw->priv; 2018 int flags; 2019 2020 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x " 2021 "total_flags=0x%08x", 2022 __func__, changed_flags, *total_flags); 2023 2024 flags = changed_flags & AT76_SUPPORTED_FILTERS; 2025 *total_flags = AT76_SUPPORTED_FILTERS; 2026 2027 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */ 2028 if (priv->device_unplugged) 2029 return; 2030 2031 2032 if (flags && !priv->promisc) { 2033 /* mac80211 wants us to enable promiscuous mode */ 2034 priv->promisc = 1; 2035 } else if (!flags && priv->promisc) { 2036 /* we need to disable promiscuous mode */ 2037 priv->promisc = 0; 2038 } else 2039 return; 2040 2041 ieee80211_queue_work(hw, &priv->work_set_promisc); 2042} 2043 2044static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 2045 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 2046 struct ieee80211_key_conf *key) 2047{ 2048 struct at76_priv *priv = hw->priv; 2049 2050 int i; 2051 2052 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->alg %d key->keyidx %d " 2053 "key->keylen %d", 2054 __func__, cmd, key->alg, key->keyidx, key->keylen); 2055 2056 if (key->alg != ALG_WEP) 2057 return -EOPNOTSUPP; 2058 2059 key->hw_key_idx = key->keyidx; 2060 2061 mutex_lock(&priv->mtx); 2062 2063 switch (cmd) { 2064 case SET_KEY: 2065 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen); 2066 priv->wep_keys_len[key->keyidx] = key->keylen; 2067 2068 priv->wep_key_id = key->keyidx; 2069 2070 break; 2071 case DISABLE_KEY: 2072 default: 2073 priv->wep_keys_len[key->keyidx] = 0; 2074 break; 2075 } 2076 2077 priv->wep_enabled = 0; 2078 2079 for (i = 0; i < WEP_KEYS; i++) { 2080 if (priv->wep_keys_len[i] != 0) 2081 priv->wep_enabled = 1; 2082 } 2083 2084 at76_startup_device(priv); 2085 2086 mutex_unlock(&priv->mtx); 2087 2088 return 0; 2089} 2090 2091static const struct ieee80211_ops at76_ops = { 2092 .tx = at76_mac80211_tx, 2093 .add_interface = at76_add_interface, 2094 .remove_interface = at76_remove_interface, 2095 .config = at76_config, 2096 .bss_info_changed = at76_bss_info_changed, 2097 .configure_filter = at76_configure_filter, 2098 .start = at76_mac80211_start, 2099 .stop = at76_mac80211_stop, 2100 .hw_scan = at76_hw_scan, 2101 .set_key = at76_set_key, 2102}; 2103 2104/* Allocate network device and initialize private data */ 2105static struct at76_priv *at76_alloc_new_device(struct usb_device *udev) 2106{ 2107 struct ieee80211_hw *hw; 2108 struct at76_priv *priv; 2109 2110 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops); 2111 if (!hw) { 2112 printk(KERN_ERR DRIVER_NAME ": could not register" 2113 " ieee80211_hw\n"); 2114 return NULL; 2115 } 2116 2117 priv = hw->priv; 2118 priv->hw = hw; 2119 2120 priv->udev = udev; 2121 2122 mutex_init(&priv->mtx); 2123 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc); 2124 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx); 2125 INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid); 2126 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan); 2127 2128 tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0); 2129 2130 priv->pm_mode = AT76_PM_OFF; 2131 priv->pm_period = 0; 2132 2133 /* unit us */ 2134 priv->hw->channel_change_time = 100000; 2135 2136 return priv; 2137} 2138 2139static int at76_alloc_urbs(struct at76_priv *priv, 2140 struct usb_interface *interface) 2141{ 2142 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out; 2143 int i; 2144 int buffer_size; 2145 struct usb_host_interface *iface_desc; 2146 2147 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); 2148 2149 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__, 2150 interface->altsetting[0].desc.bNumEndpoints); 2151 2152 ep_in = NULL; 2153 ep_out = NULL; 2154 iface_desc = interface->cur_altsetting; 2155 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { 2156 endpoint = &iface_desc->endpoint[i].desc; 2157 2158 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x", 2159 __func__, i, endpoint->bEndpointAddress, 2160 endpoint->bmAttributes); 2161 2162 if (!ep_in && usb_endpoint_is_bulk_in(endpoint)) 2163 ep_in = endpoint; 2164 2165 if (!ep_out && usb_endpoint_is_bulk_out(endpoint)) 2166 ep_out = endpoint; 2167 } 2168 2169 if (!ep_in || !ep_out) { 2170 dev_printk(KERN_ERR, &interface->dev, 2171 "bulk endpoints missing\n"); 2172 return -ENXIO; 2173 } 2174 2175 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress); 2176 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress); 2177 2178 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 2179 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 2180 if (!priv->rx_urb || !priv->tx_urb) { 2181 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n"); 2182 return -ENOMEM; 2183 } 2184 2185 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE; 2186 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); 2187 if (!priv->bulk_out_buffer) { 2188 dev_printk(KERN_ERR, &interface->dev, 2189 "cannot allocate output buffer\n"); 2190 return -ENOMEM; 2191 } 2192 2193 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); 2194 2195 return 0; 2196} 2197 2198static struct ieee80211_rate at76_rates[] = { 2199 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, }, 2200 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, }, 2201 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, }, 2202 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, }, 2203}; 2204 2205static struct ieee80211_channel at76_channels[] = { 2206 { .center_freq = 2412, .hw_value = 1 }, 2207 { .center_freq = 2417, .hw_value = 2 }, 2208 { .center_freq = 2422, .hw_value = 3 }, 2209 { .center_freq = 2427, .hw_value = 4 }, 2210 { .center_freq = 2432, .hw_value = 5 }, 2211 { .center_freq = 2437, .hw_value = 6 }, 2212 { .center_freq = 2442, .hw_value = 7 }, 2213 { .center_freq = 2447, .hw_value = 8 }, 2214 { .center_freq = 2452, .hw_value = 9 }, 2215 { .center_freq = 2457, .hw_value = 10 }, 2216 { .center_freq = 2462, .hw_value = 11 }, 2217 { .center_freq = 2467, .hw_value = 12 }, 2218 { .center_freq = 2472, .hw_value = 13 }, 2219 { .center_freq = 2484, .hw_value = 14 } 2220}; 2221 2222static struct ieee80211_supported_band at76_supported_band = { 2223 .channels = at76_channels, 2224 .n_channels = ARRAY_SIZE(at76_channels), 2225 .bitrates = at76_rates, 2226 .n_bitrates = ARRAY_SIZE(at76_rates), 2227}; 2228 2229/* Register network device and initialize the hardware */ 2230static int at76_init_new_device(struct at76_priv *priv, 2231 struct usb_interface *interface) 2232{ 2233 struct wiphy *wiphy; 2234 size_t len; 2235 int ret; 2236 2237 /* set up the endpoint information */ 2238 /* check out the endpoints */ 2239 2240 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints", 2241 interface->cur_altsetting->desc.bNumEndpoints); 2242 2243 ret = at76_alloc_urbs(priv, interface); 2244 if (ret < 0) 2245 goto exit; 2246 2247 /* MAC address */ 2248 ret = at76_get_hw_config(priv); 2249 if (ret < 0) { 2250 dev_printk(KERN_ERR, &interface->dev, 2251 "cannot get MAC address\n"); 2252 goto exit; 2253 } 2254 2255 priv->domain = at76_get_reg_domain(priv->regulatory_domain); 2256 2257 priv->channel = DEF_CHANNEL; 2258 priv->iw_mode = IW_MODE_INFRA; 2259 priv->rts_threshold = DEF_RTS_THRESHOLD; 2260 priv->frag_threshold = DEF_FRAG_THRESHOLD; 2261 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT; 2262 priv->txrate = TX_RATE_AUTO; 2263 priv->preamble_type = PREAMBLE_TYPE_LONG; 2264 priv->beacon_period = 100; 2265 priv->auth_mode = WLAN_AUTH_OPEN; 2266 priv->scan_min_time = DEF_SCAN_MIN_TIME; 2267 priv->scan_max_time = DEF_SCAN_MAX_TIME; 2268 priv->scan_mode = SCAN_TYPE_ACTIVE; 2269 priv->device_unplugged = 0; 2270 2271 /* mac80211 initialisation */ 2272 wiphy = priv->hw->wiphy; 2273 priv->hw->wiphy->max_scan_ssids = 1; 2274 priv->hw->wiphy->max_scan_ie_len = 0; 2275 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); 2276 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band; 2277 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | 2278 IEEE80211_HW_SIGNAL_UNSPEC; 2279 priv->hw->max_signal = 100; 2280 2281 SET_IEEE80211_DEV(priv->hw, &interface->dev); 2282 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); 2283 2284 len = sizeof(wiphy->fw_version); 2285 snprintf(wiphy->fw_version, len, "%d.%d.%d-%d", 2286 priv->fw_version.major, priv->fw_version.minor, 2287 priv->fw_version.patch, priv->fw_version.build); 2288 2289 wiphy->hw_version = priv->board_type; 2290 2291 ret = ieee80211_register_hw(priv->hw); 2292 if (ret) { 2293 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n", 2294 ret); 2295 goto exit; 2296 } 2297 2298 priv->mac80211_registered = 1; 2299 2300 wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n", 2301 dev_name(&interface->dev), priv->mac_addr, 2302 priv->fw_version.major, priv->fw_version.minor, 2303 priv->fw_version.patch, priv->fw_version.build); 2304 wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n", 2305 priv->regulatory_domain, priv->domain->name); 2306 2307exit: 2308 return ret; 2309} 2310 2311static void at76_delete_device(struct at76_priv *priv) 2312{ 2313 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); 2314 2315 /* The device is gone, don't bother turning it off */ 2316 priv->device_unplugged = 1; 2317 2318 tasklet_kill(&priv->rx_tasklet); 2319 2320 if (priv->mac80211_registered) 2321 ieee80211_unregister_hw(priv->hw); 2322 2323 if (priv->tx_urb) { 2324 usb_kill_urb(priv->tx_urb); 2325 usb_free_urb(priv->tx_urb); 2326 } 2327 if (priv->rx_urb) { 2328 usb_kill_urb(priv->rx_urb); 2329 usb_free_urb(priv->rx_urb); 2330 } 2331 2332 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__); 2333 2334 kfree(priv->bulk_out_buffer); 2335 2336 del_timer_sync(&ledtrig_tx_timer); 2337 2338 kfree_skb(priv->rx_skb); 2339 2340 usb_put_dev(priv->udev); 2341 2342 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw", 2343 __func__); 2344 ieee80211_free_hw(priv->hw); 2345 2346 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); 2347} 2348 2349static int at76_probe(struct usb_interface *interface, 2350 const struct usb_device_id *id) 2351{ 2352 int ret; 2353 struct at76_priv *priv; 2354 struct fwentry *fwe; 2355 struct usb_device *udev; 2356 int op_mode; 2357 int need_ext_fw = 0; 2358 struct mib_fw_version fwv; 2359 int board_type = (int)id->driver_info; 2360 2361 udev = usb_get_dev(interface_to_usbdev(interface)); 2362 2363 /* Load firmware into kernel memory */ 2364 fwe = at76_load_firmware(udev, board_type); 2365 if (!fwe) { 2366 ret = -ENOENT; 2367 goto error; 2368 } 2369 2370 op_mode = at76_get_op_mode(udev); 2371 2372 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); 2373 2374 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ??? 2375 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */ 2376 2377 if (op_mode == OPMODE_HW_CONFIG_MODE) { 2378 dev_printk(KERN_ERR, &interface->dev, 2379 "cannot handle a device in HW_CONFIG_MODE\n"); 2380 ret = -EBUSY; 2381 goto error; 2382 } 2383 2384 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH 2385 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { 2386 /* download internal firmware part */ 2387 dev_printk(KERN_DEBUG, &interface->dev, 2388 "downloading internal firmware\n"); 2389 ret = at76_load_internal_fw(udev, fwe); 2390 if (ret < 0) { 2391 dev_printk(KERN_ERR, &interface->dev, 2392 "error %d downloading internal firmware\n", 2393 ret); 2394 goto error; 2395 } 2396 usb_put_dev(udev); 2397 return ret; 2398 } 2399 2400 /* Internal firmware already inside the device. Get firmware 2401 * version to test if external firmware is loaded. 2402 * This works only for newer firmware, e.g. the Intersil 0.90.x 2403 * says "control timeout on ep0in" and subsequent 2404 * at76_get_op_mode() fail too :-( */ 2405 2406 /* if version >= 0.100.x.y or device with built-in flash we can 2407 * query the device for the fw version */ 2408 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100) 2409 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) { 2410 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv)); 2411 if (ret < 0 || (fwv.major | fwv.minor) == 0) 2412 need_ext_fw = 1; 2413 } else 2414 /* No way to check firmware version, reload to be sure */ 2415 need_ext_fw = 1; 2416 2417 if (need_ext_fw) { 2418 dev_printk(KERN_DEBUG, &interface->dev, 2419 "downloading external firmware\n"); 2420 2421 ret = at76_load_external_fw(udev, fwe); 2422 if (ret) 2423 goto error; 2424 2425 /* Re-check firmware version */ 2426 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv)); 2427 if (ret < 0) { 2428 dev_printk(KERN_ERR, &interface->dev, 2429 "error %d getting firmware version\n", ret); 2430 goto error; 2431 } 2432 } 2433 2434 priv = at76_alloc_new_device(udev); 2435 if (!priv) { 2436 ret = -ENOMEM; 2437 goto error; 2438 } 2439 2440 usb_set_intfdata(interface, priv); 2441 2442 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version)); 2443 priv->board_type = board_type; 2444 2445 ret = at76_init_new_device(priv, interface); 2446 if (ret < 0) 2447 at76_delete_device(priv); 2448 2449 return ret; 2450 2451error: 2452 usb_put_dev(udev); 2453 return ret; 2454} 2455 2456static void at76_disconnect(struct usb_interface *interface) 2457{ 2458 struct at76_priv *priv; 2459 2460 priv = usb_get_intfdata(interface); 2461 usb_set_intfdata(interface, NULL); 2462 2463 /* Disconnect after loading internal firmware */ 2464 if (!priv) 2465 return; 2466 2467 wiphy_info(priv->hw->wiphy, "disconnecting\n"); 2468 at76_delete_device(priv); 2469 dev_printk(KERN_INFO, &interface->dev, "disconnected\n"); 2470} 2471 2472/* Structure for registering this driver with the USB subsystem */ 2473static struct usb_driver at76_driver = { 2474 .name = DRIVER_NAME, 2475 .probe = at76_probe, 2476 .disconnect = at76_disconnect, 2477 .id_table = dev_table, 2478}; 2479 2480static int __init at76_mod_init(void) 2481{ 2482 int result; 2483 2484 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n"); 2485 2486 mutex_init(&fw_mutex); 2487 2488 /* register this driver with the USB subsystem */ 2489 result = usb_register(&at76_driver); 2490 if (result < 0) 2491 printk(KERN_ERR DRIVER_NAME 2492 ": usb_register failed (status %d)\n", result); 2493 2494 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx); 2495 return result; 2496} 2497 2498static void __exit at76_mod_exit(void) 2499{ 2500 int i; 2501 2502 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n"); 2503 usb_deregister(&at76_driver); 2504 for (i = 0; i < ARRAY_SIZE(firmwares); i++) { 2505 if (firmwares[i].fw) 2506 release_firmware(firmwares[i].fw); 2507 } 2508 led_trigger_unregister_simple(ledtrig_tx); 2509} 2510 2511module_param_named(debug, at76_debug, uint, 0600); 2512MODULE_PARM_DESC(debug, "Debugging level"); 2513 2514module_init(at76_mod_init); 2515module_exit(at76_mod_exit); 2516 2517MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>"); 2518MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>"); 2519MODULE_AUTHOR("Alex <alex@foogod.com>"); 2520MODULE_AUTHOR("Nick Jones"); 2521MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>"); 2522MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>"); 2523MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>"); 2524MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>"); 2525MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>"); 2526MODULE_DESCRIPTION(DRIVER_DESC); 2527MODULE_LICENSE("GPL"); 2528