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 USB WLAN 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 USB Wireless 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 USB WLAN 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 USB WLAN 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 u64 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 .add_chanctx = ieee80211_emulate_add_chanctx, 2182 .remove_chanctx = ieee80211_emulate_remove_chanctx, 2183 .change_chanctx = ieee80211_emulate_change_chanctx, 2184 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 2185 .tx = at76_mac80211_tx, 2186 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 2187 .add_interface = at76_add_interface, 2188 .remove_interface = at76_remove_interface, 2189 .config = at76_config, 2190 .bss_info_changed = at76_bss_info_changed, 2191 .configure_filter = at76_configure_filter, 2192 .start = at76_mac80211_start, 2193 .stop = at76_mac80211_stop, 2194 .hw_scan = at76_hw_scan, 2195 .set_key = at76_set_key, 2196}; 2197 2198/* Allocate network device and initialize private data */ 2199static struct at76_priv *at76_alloc_new_device(struct usb_device *udev) 2200{ 2201 struct ieee80211_hw *hw; 2202 struct at76_priv *priv; 2203 2204 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops); 2205 if (!hw) { 2206 printk(KERN_ERR DRIVER_NAME ": could not register" 2207 " ieee80211_hw\n"); 2208 return NULL; 2209 } 2210 2211 priv = hw->priv; 2212 priv->hw = hw; 2213 2214 priv->udev = udev; 2215 2216 mutex_init(&priv->mtx); 2217 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc); 2218 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx); 2219 INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid); 2220 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan); 2221 2222 tasklet_setup(&priv->rx_tasklet, at76_rx_tasklet); 2223 2224 priv->pm_mode = AT76_PM_OFF; 2225 priv->pm_period = 0; 2226 2227 /* unit us */ 2228 2229 return priv; 2230} 2231 2232static int at76_alloc_urbs(struct at76_priv *priv, 2233 struct usb_interface *interface) 2234{ 2235 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out; 2236 int i; 2237 int buffer_size; 2238 struct usb_host_interface *iface_desc; 2239 2240 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); 2241 2242 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__, 2243 interface->cur_altsetting->desc.bNumEndpoints); 2244 2245 ep_in = NULL; 2246 ep_out = NULL; 2247 iface_desc = interface->cur_altsetting; 2248 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { 2249 endpoint = &iface_desc->endpoint[i].desc; 2250 2251 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x", 2252 __func__, i, endpoint->bEndpointAddress, 2253 endpoint->bmAttributes); 2254 2255 if (!ep_in && usb_endpoint_is_bulk_in(endpoint)) 2256 ep_in = endpoint; 2257 2258 if (!ep_out && usb_endpoint_is_bulk_out(endpoint)) 2259 ep_out = endpoint; 2260 } 2261 2262 if (!ep_in || !ep_out) { 2263 dev_err(&interface->dev, "bulk endpoints missing\n"); 2264 return -ENXIO; 2265 } 2266 2267 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress); 2268 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress); 2269 2270 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 2271 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 2272 if (!priv->rx_urb || !priv->tx_urb) { 2273 dev_err(&interface->dev, "cannot allocate URB\n"); 2274 return -ENOMEM; 2275 } 2276 2277 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE; 2278 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); 2279 if (!priv->bulk_out_buffer) 2280 return -ENOMEM; 2281 2282 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); 2283 2284 return 0; 2285} 2286 2287static struct ieee80211_rate at76_rates[] = { 2288 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, }, 2289 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, }, 2290 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, }, 2291 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, }, 2292}; 2293 2294static struct ieee80211_channel at76_channels[] = { 2295 { .center_freq = 2412, .hw_value = 1 }, 2296 { .center_freq = 2417, .hw_value = 2 }, 2297 { .center_freq = 2422, .hw_value = 3 }, 2298 { .center_freq = 2427, .hw_value = 4 }, 2299 { .center_freq = 2432, .hw_value = 5 }, 2300 { .center_freq = 2437, .hw_value = 6 }, 2301 { .center_freq = 2442, .hw_value = 7 }, 2302 { .center_freq = 2447, .hw_value = 8 }, 2303 { .center_freq = 2452, .hw_value = 9 }, 2304 { .center_freq = 2457, .hw_value = 10 }, 2305 { .center_freq = 2462, .hw_value = 11 }, 2306 { .center_freq = 2467, .hw_value = 12 }, 2307 { .center_freq = 2472, .hw_value = 13 }, 2308 { .center_freq = 2484, .hw_value = 14 } 2309}; 2310 2311static struct ieee80211_supported_band at76_supported_band = { 2312 .channels = at76_channels, 2313 .n_channels = ARRAY_SIZE(at76_channels), 2314 .bitrates = at76_rates, 2315 .n_bitrates = ARRAY_SIZE(at76_rates), 2316}; 2317 2318/* Register network device and initialize the hardware */ 2319static int at76_init_new_device(struct at76_priv *priv, 2320 struct usb_interface *interface) 2321{ 2322 struct wiphy *wiphy; 2323 size_t len; 2324 int ret; 2325 2326 /* set up the endpoint information */ 2327 /* check out the endpoints */ 2328 2329 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints", 2330 interface->cur_altsetting->desc.bNumEndpoints); 2331 2332 ret = at76_alloc_urbs(priv, interface); 2333 if (ret < 0) 2334 goto exit; 2335 2336 /* MAC address */ 2337 ret = at76_get_hw_config(priv); 2338 if (ret < 0) { 2339 dev_err(&interface->dev, "cannot get MAC address\n"); 2340 goto exit; 2341 } 2342 2343 priv->domain = at76_get_reg_domain(priv->regulatory_domain); 2344 2345 priv->channel = DEF_CHANNEL; 2346 priv->iw_mode = IW_MODE_INFRA; 2347 priv->rts_threshold = DEF_RTS_THRESHOLD; 2348 priv->frag_threshold = DEF_FRAG_THRESHOLD; 2349 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT; 2350 priv->txrate = TX_RATE_AUTO; 2351 priv->preamble_type = PREAMBLE_TYPE_LONG; 2352 priv->beacon_period = 100; 2353 priv->auth_mode = WLAN_AUTH_OPEN; 2354 priv->scan_min_time = DEF_SCAN_MIN_TIME; 2355 priv->scan_max_time = DEF_SCAN_MAX_TIME; 2356 priv->scan_mode = SCAN_TYPE_ACTIVE; 2357 priv->device_unplugged = 0; 2358 2359 /* mac80211 initialisation */ 2360 wiphy = priv->hw->wiphy; 2361 priv->hw->wiphy->max_scan_ssids = 1; 2362 priv->hw->wiphy->max_scan_ie_len = 0; 2363 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); 2364 priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = &at76_supported_band; 2365 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS); 2366 ieee80211_hw_set(priv->hw, SIGNAL_UNSPEC); 2367 priv->hw->max_signal = 100; 2368 2369 SET_IEEE80211_DEV(priv->hw, &interface->dev); 2370 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); 2371 2372 len = sizeof(wiphy->fw_version); 2373 snprintf(wiphy->fw_version, len, "%d.%d.%d-%d", 2374 priv->fw_version.major, priv->fw_version.minor, 2375 priv->fw_version.patch, priv->fw_version.build); 2376 2377 wiphy->hw_version = priv->board_type; 2378 2379 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 2380 2381 ret = ieee80211_register_hw(priv->hw); 2382 if (ret) { 2383 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n", 2384 ret); 2385 goto exit; 2386 } 2387 2388 priv->mac80211_registered = 1; 2389 2390 wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n", 2391 dev_name(&interface->dev), priv->mac_addr, 2392 priv->fw_version.major, priv->fw_version.minor, 2393 priv->fw_version.patch, priv->fw_version.build); 2394 wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n", 2395 priv->regulatory_domain, priv->domain->name); 2396 2397exit: 2398 return ret; 2399} 2400 2401static void at76_delete_device(struct at76_priv *priv) 2402{ 2403 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); 2404 2405 /* The device is gone, don't bother turning it off */ 2406 priv->device_unplugged = 1; 2407 2408 tasklet_kill(&priv->rx_tasklet); 2409 2410 if (priv->mac80211_registered) 2411 ieee80211_unregister_hw(priv->hw); 2412 2413 if (priv->tx_urb) { 2414 usb_kill_urb(priv->tx_urb); 2415 usb_free_urb(priv->tx_urb); 2416 } 2417 if (priv->rx_urb) { 2418 usb_kill_urb(priv->rx_urb); 2419 usb_free_urb(priv->rx_urb); 2420 } 2421 2422 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__); 2423 2424 kfree(priv->bulk_out_buffer); 2425 2426 del_timer_sync(&ledtrig_tx_timer); 2427 2428 kfree_skb(priv->rx_skb); 2429 2430 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw", 2431 __func__); 2432 ieee80211_free_hw(priv->hw); 2433 2434 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); 2435} 2436 2437static int at76_probe(struct usb_interface *interface, 2438 const struct usb_device_id *id) 2439{ 2440 int ret; 2441 struct at76_priv *priv; 2442 struct fwentry *fwe; 2443 struct usb_device *udev; 2444 int op_mode; 2445 int need_ext_fw = 0; 2446 struct mib_fw_version *fwv = NULL; 2447 int board_type = (int)id->driver_info; 2448 2449 udev = usb_get_dev(interface_to_usbdev(interface)); 2450 2451 fwv = kmalloc(sizeof(*fwv), GFP_KERNEL); 2452 if (!fwv) { 2453 ret = -ENOMEM; 2454 goto exit; 2455 } 2456 2457 /* Load firmware into kernel memory */ 2458 fwe = at76_load_firmware(udev, board_type); 2459 if (!fwe) { 2460 ret = -ENOENT; 2461 goto exit; 2462 } 2463 2464 op_mode = at76_get_op_mode(udev); 2465 2466 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); 2467 2468 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ??? 2469 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */ 2470 2471 if (op_mode == OPMODE_HW_CONFIG_MODE) { 2472 dev_err(&interface->dev, 2473 "cannot handle a device in HW_CONFIG_MODE\n"); 2474 ret = -EBUSY; 2475 goto exit; 2476 } 2477 2478 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH 2479 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { 2480 /* download internal firmware part */ 2481 dev_printk(KERN_DEBUG, &interface->dev, 2482 "downloading internal firmware\n"); 2483 ret = at76_load_internal_fw(udev, fwe); 2484 if (ret < 0) { 2485 dev_err(&interface->dev, 2486 "error %d downloading internal firmware\n", 2487 ret); 2488 } 2489 goto exit; 2490 } 2491 2492 /* Internal firmware already inside the device. Get firmware 2493 * version to test if external firmware is loaded. 2494 * This works only for newer firmware, e.g. the Intersil 0.90.x 2495 * says "control timeout on ep0in" and subsequent 2496 * at76_get_op_mode() fail too :-( */ 2497 2498 /* if version >= 0.100.x.y or device with built-in flash we can 2499 * query the device for the fw version */ 2500 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100) 2501 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) { 2502 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv)); 2503 if (ret < 0 || (fwv->major | fwv->minor) == 0) 2504 need_ext_fw = 1; 2505 } else 2506 /* No way to check firmware version, reload to be sure */ 2507 need_ext_fw = 1; 2508 2509 if (need_ext_fw) { 2510 dev_printk(KERN_DEBUG, &interface->dev, 2511 "downloading external firmware\n"); 2512 2513 ret = at76_load_external_fw(udev, fwe); 2514 if (ret < 0) 2515 goto exit; 2516 2517 /* Re-check firmware version */ 2518 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv)); 2519 if (ret < 0) { 2520 dev_err(&interface->dev, 2521 "error %d getting firmware version\n", ret); 2522 goto exit; 2523 } 2524 } 2525 2526 priv = at76_alloc_new_device(udev); 2527 if (!priv) { 2528 ret = -ENOMEM; 2529 goto exit; 2530 } 2531 2532 usb_set_intfdata(interface, priv); 2533 2534 memcpy(&priv->fw_version, fwv, sizeof(struct mib_fw_version)); 2535 priv->board_type = board_type; 2536 2537 ret = at76_init_new_device(priv, interface); 2538 if (ret < 0) 2539 at76_delete_device(priv); 2540 2541exit: 2542 kfree(fwv); 2543 if (ret < 0) 2544 usb_put_dev(udev); 2545 return ret; 2546} 2547 2548static void at76_disconnect(struct usb_interface *interface) 2549{ 2550 struct at76_priv *priv; 2551 2552 priv = usb_get_intfdata(interface); 2553 usb_set_intfdata(interface, NULL); 2554 2555 /* Disconnect after loading internal firmware */ 2556 if (!priv) 2557 return; 2558 2559 wiphy_info(priv->hw->wiphy, "disconnecting\n"); 2560 at76_delete_device(priv); 2561 usb_put_dev(priv->udev); 2562 dev_info(&interface->dev, "disconnected\n"); 2563} 2564 2565/* Structure for registering this driver with the USB subsystem */ 2566static struct usb_driver at76_driver = { 2567 .name = DRIVER_NAME, 2568 .probe = at76_probe, 2569 .disconnect = at76_disconnect, 2570 .id_table = dev_table, 2571 .disable_hub_initiated_lpm = 1, 2572}; 2573 2574static int __init at76_mod_init(void) 2575{ 2576 int result; 2577 2578 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n"); 2579 2580 /* register this driver with the USB subsystem */ 2581 result = usb_register(&at76_driver); 2582 if (result < 0) 2583 printk(KERN_ERR DRIVER_NAME 2584 ": usb_register failed (status %d)\n", result); 2585 else 2586 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx); 2587 return result; 2588} 2589 2590static void __exit at76_mod_exit(void) 2591{ 2592 int i; 2593 2594 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n"); 2595 usb_deregister(&at76_driver); 2596 for (i = 0; i < ARRAY_SIZE(firmwares); i++) 2597 release_firmware(firmwares[i].fw); 2598 led_trigger_unregister_simple(ledtrig_tx); 2599} 2600 2601module_param_named(debug, at76_debug, uint, 0600); 2602MODULE_PARM_DESC(debug, "Debugging level"); 2603 2604module_init(at76_mod_init); 2605module_exit(at76_mod_exit); 2606 2607MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>"); 2608MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>"); 2609MODULE_AUTHOR("Alex <alex@foogod.com>"); 2610MODULE_AUTHOR("Nick Jones"); 2611MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>"); 2612MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>"); 2613MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>"); 2614MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>"); 2615MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>"); 2616MODULE_DESCRIPTION(DRIVER_DESC); 2617MODULE_LICENSE("GPL"); 2618