1 /* 2 * at76c503/at76c505 USB driver 3 * 4 * Copyright (c) 2002 - 2003 Oliver Kurth 5 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de> 6 * Copyright (c) 2004 Nick Jones 7 * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com> 8 * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org> 9 * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi> 10 * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net> 11 * 12 * This program is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License as 14 * published by the Free Software Foundation; either version 2 of 15 * the License, or (at your option) any later version. 16 * 17 * This file is part of the Berlios driver for WLAN USB devices based on the 18 * Atmel AT76C503A/505/505A. 19 * 20 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed 21 * 22 * TODO list is at the wiki: 23 * 24 * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO 25 * 26 */ 27 28 #include <linux/init.h> 29 #include <linux/kernel.h> 30 #include <linux/sched.h> 31 #include <linux/errno.h> 32 #include <linux/slab.h> 33 #include <linux/module.h> 34 #include <linux/spinlock.h> 35 #include <linux/list.h> 36 #include <linux/usb.h> 37 #include <linux/netdevice.h> 38 #include <linux/if_arp.h> 39 #include <linux/etherdevice.h> 40 #include <linux/ethtool.h> 41 #include <linux/wireless.h> 42 #include <net/iw_handler.h> 43 #include <net/ieee80211_radiotap.h> 44 #include <linux/firmware.h> 45 #include <linux/leds.h> 46 #include <net/mac80211.h> 47 48 #include "at76c50x-usb.h" 49 50 /* Version information */ 51 #define DRIVER_NAME "at76c50x-usb" 52 #define DRIVER_VERSION "0.17" 53 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver" 54 55 /* at76_debug bits */ 56 #define DBG_PROGRESS 0x00000001 /* authentication/accociation */ 57 #define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */ 58 #define DBG_IOCTL 0x00000004 /* ioctl calls / settings */ 59 #define DBG_MAC_STATE 0x00000008 /* MAC state transitions */ 60 #define DBG_TX_DATA 0x00000010 /* tx header */ 61 #define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */ 62 #define DBG_TX_MGMT 0x00000040 /* tx management */ 63 #define DBG_RX_DATA 0x00000080 /* rx data header */ 64 #define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */ 65 #define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */ 66 #define DBG_RX_BEACON 0x00000400 /* rx beacon */ 67 #define DBG_RX_CTRL 0x00000800 /* rx control */ 68 #define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */ 69 #define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */ 70 #define DBG_DEVSTART 0x00004000 /* fw download, device start */ 71 #define DBG_URB 0x00008000 /* rx urb status, ... */ 72 #define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */ 73 #define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */ 74 #define DBG_PM 0x00040000 /* power management settings */ 75 #define DBG_BSS_MATCH 0x00080000 /* BSS match failures */ 76 #define DBG_PARAMS 0x00100000 /* show configured parameters */ 77 #define DBG_WAIT_COMPLETE 0x00200000 /* command completion */ 78 #define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */ 79 #define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */ 80 #define DBG_MONITOR_MODE 0x01000000 /* monitor mode */ 81 #define DBG_MIB 0x02000000 /* dump all MIBs on startup */ 82 #define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */ 83 #define DBG_WE_EVENTS 0x08000000 /* dump wireless events */ 84 #define DBG_FW 0x10000000 /* firmware download */ 85 #define DBG_DFU 0x20000000 /* device firmware upgrade */ 86 #define DBG_CMD 0x40000000 87 #define DBG_MAC80211 0x80000000 88 89 #define DBG_DEFAULTS 0 90 91 /* Use our own dbg macro */ 92 #define at76_dbg(bits, format, arg...) \ 93 do { \ 94 if (at76_debug & (bits)) \ 95 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \ 96 } while (0) 97 98 #define at76_dbg_dump(bits, buf, len, format, arg...) \ 99 do { \ 100 if (at76_debug & (bits)) { \ 101 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \ 102 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \ 103 } \ 104 } while (0) 105 106 static uint at76_debug = DBG_DEFAULTS; 107 108 /* Protect against concurrent firmware loading and parsing */ 109 static struct mutex fw_mutex; 110 111 static struct fwentry firmwares[] = { 112 [0] = { "" }, 113 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" }, 114 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" }, 115 [BOARD_503] = { "atmel_at76c503-rfmd.bin" }, 116 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" }, 117 [BOARD_505] = { "atmel_at76c505-rfmd.bin" }, 118 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" }, 119 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" }, 120 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" }, 121 }; 122 MODULE_FIRMWARE("atmel_at76c503-i3861.bin"); 123 MODULE_FIRMWARE("atmel_at76c503-i3863.bin"); 124 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin"); 125 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin"); 126 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin"); 127 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin"); 128 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin"); 129 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin"); 130 131 #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops) 132 133 static const struct usb_device_id dev_table[] = { 134 /* 135 * at76c503-i3861 136 */ 137 /* Generic AT76C503/3861 device */ 138 { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 139 /* Linksys WUSB11 v2.1/v2.6 */ 140 { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 141 /* Netgear MA101 rev. A */ 142 { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 143 /* Tekram U300C / Allnet ALL0193 */ 144 { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 145 /* HP HN210W J7801A */ 146 { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 147 /* Sitecom/Z-Com/Zyxel M4Y-750 */ 148 { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 149 /* Dynalink/Askey WLL013 (intersil) */ 150 { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 151 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */ 152 { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 153 /* BenQ AWL300 */ 154 { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 155 /* Addtron AWU-120, Compex WLU11 */ 156 { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 157 /* Intel AP310 AnyPoint II USB */ 158 { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 159 /* Dynalink L11U */ 160 { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 161 /* Arescom WL-210, FCC id 07J-GL2411USB */ 162 { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 163 /* I-O DATA WN-B11/USB */ 164 { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 165 /* BT Voyager 1010 */ 166 { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) }, 167 /* 168 * at76c503-i3863 169 */ 170 /* Generic AT76C503/3863 device */ 171 { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) }, 172 /* Samsung SWL-2100U */ 173 { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) }, 174 /* 175 * at76c503-rfmd 176 */ 177 /* Generic AT76C503/RFMD device */ 178 { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) }, 179 /* Dynalink/Askey WLL013 (rfmd) */ 180 { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) }, 181 /* Linksys WUSB11 v2.6 */ 182 { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) }, 183 /* Network Everywhere NWU11B */ 184 { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) }, 185 /* Netgear MA101 rev. B */ 186 { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) }, 187 /* D-Link DWL-120 rev. E */ 188 { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) }, 189 /* Actiontec 802UAT1, HWU01150-01UK */ 190 { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) }, 191 /* AirVast W-Buddie WN210 */ 192 { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) }, 193 /* Dick Smith Electronics XH1153 802.11b USB adapter */ 194 { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) }, 195 /* CNet CNUSB611 */ 196 { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) }, 197 /* FiberLine FL-WL200U */ 198 { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) }, 199 /* BenQ AWL400 USB stick */ 200 { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) }, 201 /* 3Com 3CRSHEW696 */ 202 { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) }, 203 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */ 204 { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) }, 205 /* Belkin F5D6050, version 2 */ 206 { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) }, 207 /* iBlitzz, BWU613 (not *B or *SB) */ 208 { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) }, 209 /* Gigabyte GN-WLBM101 */ 210 { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) }, 211 /* Planex GW-US11S */ 212 { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) }, 213 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */ 214 { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) }, 215 /* Corega Wireless LAN USB-11 mini */ 216 { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) }, 217 /* Corega Wireless LAN USB-11 mini2 */ 218 { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) }, 219 /* Uniden PCW100 */ 220 { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) }, 221 /* 222 * at76c503-rfmd-acc 223 */ 224 /* SMC2664W */ 225 { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) }, 226 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */ 227 { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) }, 228 /* 229 * at76c505-rfmd 230 */ 231 /* Generic AT76C505/RFMD */ 232 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) }, 233 /* 234 * at76c505-rfmd2958 235 */ 236 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */ 237 { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) }, 238 /* Fiberline FL-WL240U */ 239 { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) }, 240 /* CNet CNUSB-611G */ 241 { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) }, 242 /* Linksys WUSB11 v2.8 */ 243 { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) }, 244 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */ 245 { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) }, 246 /* Corega WLAN USB Stick 11 */ 247 { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) }, 248 /* Microstar MSI Box MS6978 */ 249 { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) }, 250 /* 251 * at76c505a-rfmd2958 252 */ 253 /* Generic AT76C505A device */ 254 { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) }, 255 /* Generic AT76C505AS device */ 256 { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) }, 257 /* Siemens Gigaset USB WLAN Adapter 11 */ 258 { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) }, 259 /* OQO Model 01+ Internal Wi-Fi */ 260 { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) }, 261 /* 262 * at76c505amx-rfmd 263 */ 264 /* Generic AT76C505AMX device */ 265 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) }, 266 { } 267 }; 268 269 MODULE_DEVICE_TABLE(usb, dev_table); 270 271 /* Supported rates of this hardware, bit 7 marks basic rates */ 272 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 }; 273 274 static const char *const preambles[] = { "long", "short", "auto" }; 275 276 /* Firmware download */ 277 /* DFU states */ 278 #define STATE_IDLE 0x00 279 #define STATE_DETACH 0x01 280 #define STATE_DFU_IDLE 0x02 281 #define STATE_DFU_DOWNLOAD_SYNC 0x03 282 #define STATE_DFU_DOWNLOAD_BUSY 0x04 283 #define STATE_DFU_DOWNLOAD_IDLE 0x05 284 #define STATE_DFU_MANIFEST_SYNC 0x06 285 #define STATE_DFU_MANIFEST 0x07 286 #define STATE_DFU_MANIFEST_WAIT_RESET 0x08 287 #define STATE_DFU_UPLOAD_IDLE 0x09 288 #define STATE_DFU_ERROR 0x0a 289 290 /* DFU commands */ 291 #define DFU_DETACH 0 292 #define DFU_DNLOAD 1 293 #define DFU_UPLOAD 2 294 #define DFU_GETSTATUS 3 295 #define DFU_CLRSTATUS 4 296 #define DFU_GETSTATE 5 297 #define DFU_ABORT 6 298 299 #define FW_BLOCK_SIZE 1024 300 301 struct dfu_status { 302 unsigned char status; 303 unsigned char poll_timeout[3]; 304 unsigned char state; 305 unsigned char string; 306 } __packed; 307 308 static inline int at76_is_intersil(enum board_type board) 309 { 310 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863); 311 } 312 313 static inline int at76_is_503rfmd(enum board_type board) 314 { 315 return (board == BOARD_503 || board == BOARD_503_ACC); 316 } 317 318 static inline int at76_is_505a(enum board_type board) 319 { 320 return (board == BOARD_505A || board == BOARD_505AMX); 321 } 322 323 /* Load a block of the first (internal) part of the firmware */ 324 static int at76_load_int_fw_block(struct usb_device *udev, int blockno, 325 void *block, int size) 326 { 327 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD, 328 USB_TYPE_CLASS | USB_DIR_OUT | 329 USB_RECIP_INTERFACE, blockno, 0, block, size, 330 USB_CTRL_GET_TIMEOUT); 331 } 332 333 static int at76_dfu_get_status(struct usb_device *udev, 334 struct dfu_status *status) 335 { 336 int ret; 337 338 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS, 339 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, 340 0, 0, status, sizeof(struct dfu_status), 341 USB_CTRL_GET_TIMEOUT); 342 return ret; 343 } 344 345 static int at76_dfu_get_state(struct usb_device *udev, u8 *state) 346 { 347 int ret; 348 349 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE, 350 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, 351 0, 0, state, 1, USB_CTRL_GET_TIMEOUT); 352 return ret; 353 } 354 355 /* Convert timeout from the DFU status to jiffies */ 356 static inline unsigned long at76_get_timeout(struct dfu_status *s) 357 { 358 return msecs_to_jiffies((s->poll_timeout[2] << 16) 359 | (s->poll_timeout[1] << 8) 360 | (s->poll_timeout[0])); 361 } 362 363 /* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use 364 * its value in jiffies in the MANIFEST_SYNC state. */ 365 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size, 366 int manifest_sync_timeout) 367 { 368 int ret = 0; 369 int need_dfu_state = 1; 370 int is_done = 0; 371 u32 dfu_timeout = 0; 372 int bsize = 0; 373 int blockno = 0; 374 struct dfu_status *dfu_stat_buf = NULL; 375 u8 *dfu_state = NULL; 376 u8 *block = NULL; 377 378 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size, 379 manifest_sync_timeout); 380 381 if (!size) { 382 dev_err(&udev->dev, "FW buffer length invalid!\n"); 383 return -EINVAL; 384 } 385 386 dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL); 387 if (!dfu_stat_buf) { 388 ret = -ENOMEM; 389 goto exit; 390 } 391 392 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); 393 if (!block) { 394 ret = -ENOMEM; 395 goto exit; 396 } 397 398 dfu_state = kmalloc(sizeof(u8), GFP_KERNEL); 399 if (!dfu_state) { 400 ret = -ENOMEM; 401 goto exit; 402 } 403 *dfu_state = 0; 404 405 do { 406 if (need_dfu_state) { 407 ret = at76_dfu_get_state(udev, dfu_state); 408 if (ret < 0) { 409 dev_err(&udev->dev, 410 "cannot get DFU state: %d\n", ret); 411 goto exit; 412 } 413 need_dfu_state = 0; 414 } 415 416 switch (*dfu_state) { 417 case STATE_DFU_DOWNLOAD_SYNC: 418 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC"); 419 ret = at76_dfu_get_status(udev, dfu_stat_buf); 420 if (ret >= 0) { 421 *dfu_state = dfu_stat_buf->state; 422 dfu_timeout = at76_get_timeout(dfu_stat_buf); 423 need_dfu_state = 0; 424 } else 425 dev_err(&udev->dev, 426 "at76_dfu_get_status returned %d\n", 427 ret); 428 break; 429 430 case STATE_DFU_DOWNLOAD_BUSY: 431 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY"); 432 need_dfu_state = 1; 433 434 at76_dbg(DBG_DFU, "DFU: Resetting device"); 435 schedule_timeout_interruptible(dfu_timeout); 436 break; 437 438 case STATE_DFU_DOWNLOAD_IDLE: 439 at76_dbg(DBG_DFU, "DOWNLOAD..."); 440 /* fall through */ 441 case STATE_DFU_IDLE: 442 at76_dbg(DBG_DFU, "DFU IDLE"); 443 444 bsize = min_t(int, size, FW_BLOCK_SIZE); 445 memcpy(block, buf, bsize); 446 at76_dbg(DBG_DFU, "int fw, size left = %5d, " 447 "bsize = %4d, blockno = %2d", size, bsize, 448 blockno); 449 ret = 450 at76_load_int_fw_block(udev, blockno, block, bsize); 451 buf += bsize; 452 size -= bsize; 453 blockno++; 454 455 if (ret != bsize) 456 dev_err(&udev->dev, 457 "at76_load_int_fw_block returned %d\n", 458 ret); 459 need_dfu_state = 1; 460 break; 461 462 case STATE_DFU_MANIFEST_SYNC: 463 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC"); 464 465 ret = at76_dfu_get_status(udev, dfu_stat_buf); 466 if (ret < 0) 467 break; 468 469 *dfu_state = dfu_stat_buf->state; 470 dfu_timeout = at76_get_timeout(dfu_stat_buf); 471 need_dfu_state = 0; 472 473 /* override the timeout from the status response, 474 needed for AT76C505A */ 475 if (manifest_sync_timeout > 0) 476 dfu_timeout = manifest_sync_timeout; 477 478 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase"); 479 schedule_timeout_interruptible(dfu_timeout); 480 break; 481 482 case STATE_DFU_MANIFEST: 483 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST"); 484 is_done = 1; 485 break; 486 487 case STATE_DFU_MANIFEST_WAIT_RESET: 488 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET"); 489 is_done = 1; 490 break; 491 492 case STATE_DFU_UPLOAD_IDLE: 493 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE"); 494 break; 495 496 case STATE_DFU_ERROR: 497 at76_dbg(DBG_DFU, "STATE_DFU_ERROR"); 498 ret = -EPIPE; 499 break; 500 501 default: 502 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", *dfu_state); 503 ret = -EINVAL; 504 break; 505 } 506 } while (!is_done && (ret >= 0)); 507 508 exit: 509 kfree(dfu_state); 510 kfree(block); 511 kfree(dfu_stat_buf); 512 513 if (ret >= 0) 514 ret = 0; 515 516 return ret; 517 } 518 519 /* LED trigger */ 520 static int tx_activity; 521 static void at76_ledtrig_tx_timerfunc(struct timer_list *unused); 522 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc); 523 DEFINE_LED_TRIGGER(ledtrig_tx); 524 525 static void at76_ledtrig_tx_timerfunc(struct timer_list *unused) 526 { 527 static int tx_lastactivity; 528 529 if (tx_lastactivity != tx_activity) { 530 tx_lastactivity = tx_activity; 531 led_trigger_event(ledtrig_tx, LED_FULL); 532 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4); 533 } else 534 led_trigger_event(ledtrig_tx, LED_OFF); 535 } 536 537 static void at76_ledtrig_tx_activity(void) 538 { 539 tx_activity++; 540 if (!timer_pending(&ledtrig_tx_timer)) 541 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4); 542 } 543 544 static int at76_remap(struct usb_device *udev) 545 { 546 int ret; 547 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a, 548 USB_TYPE_VENDOR | USB_DIR_OUT | 549 USB_RECIP_INTERFACE, 0, 0, NULL, 0, 550 USB_CTRL_GET_TIMEOUT); 551 if (ret < 0) 552 return ret; 553 return 0; 554 } 555 556 static int at76_get_op_mode(struct usb_device *udev) 557 { 558 int ret; 559 u8 saved; 560 u8 *op_mode; 561 562 op_mode = kmalloc(1, GFP_NOIO); 563 if (!op_mode) 564 return -ENOMEM; 565 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, 566 USB_TYPE_VENDOR | USB_DIR_IN | 567 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1, 568 USB_CTRL_GET_TIMEOUT); 569 saved = *op_mode; 570 kfree(op_mode); 571 572 if (ret < 0) 573 return ret; 574 else if (ret < 1) 575 return -EIO; 576 else 577 return saved; 578 } 579 580 /* Load a block of the second ("external") part of the firmware */ 581 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno, 582 void *block, int size) 583 { 584 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, 585 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 586 0x0802, blockno, block, size, 587 USB_CTRL_GET_TIMEOUT); 588 } 589 590 static inline int at76_get_hw_cfg(struct usb_device *udev, 591 union at76_hwcfg *buf, int buf_size) 592 { 593 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, 594 USB_TYPE_VENDOR | USB_DIR_IN | 595 USB_RECIP_INTERFACE, 0x0a02, 0, 596 buf, buf_size, USB_CTRL_GET_TIMEOUT); 597 } 598 599 /* Intersil boards use a different "value" for GetHWConfig requests */ 600 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev, 601 union at76_hwcfg *buf, int buf_size) 602 { 603 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, 604 USB_TYPE_VENDOR | USB_DIR_IN | 605 USB_RECIP_INTERFACE, 0x0902, 0, 606 buf, buf_size, USB_CTRL_GET_TIMEOUT); 607 } 608 609 /* Get the hardware configuration for the adapter and put it to the appropriate 610 * fields of 'priv' (the GetHWConfig request and interpretation of the result 611 * depends on the board type) */ 612 static int at76_get_hw_config(struct at76_priv *priv) 613 { 614 int ret; 615 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL); 616 617 if (!hwcfg) 618 return -ENOMEM; 619 620 if (at76_is_intersil(priv->board_type)) { 621 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg, 622 sizeof(hwcfg->i)); 623 if (ret < 0) 624 goto exit; 625 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN); 626 priv->regulatory_domain = hwcfg->i.regulatory_domain; 627 } else if (at76_is_503rfmd(priv->board_type)) { 628 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3)); 629 if (ret < 0) 630 goto exit; 631 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN); 632 priv->regulatory_domain = hwcfg->r3.regulatory_domain; 633 } else { 634 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5)); 635 if (ret < 0) 636 goto exit; 637 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN); 638 priv->regulatory_domain = hwcfg->r5.regulatory_domain; 639 } 640 641 exit: 642 kfree(hwcfg); 643 if (ret < 0) 644 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n", 645 ret); 646 647 return ret; 648 } 649 650 static struct reg_domain const *at76_get_reg_domain(u16 code) 651 { 652 int i; 653 static struct reg_domain const fd_tab[] = { 654 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */ 655 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */ 656 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */ 657 { 0x31, "Spain", 0x600 }, /* ch 10-11 */ 658 { 0x32, "France", 0x1e00 }, /* ch 10-13 */ 659 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */ 660 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */ 661 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */ 662 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */ 663 }; 664 665 /* Last entry is fallback for unknown domain code */ 666 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++) 667 if (code == fd_tab[i].code) 668 break; 669 670 return &fd_tab[i]; 671 } 672 673 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf, 674 int buf_size) 675 { 676 int ret; 677 678 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, 679 USB_TYPE_VENDOR | USB_DIR_IN | 680 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size, 681 USB_CTRL_GET_TIMEOUT); 682 if (ret >= 0 && ret != buf_size) 683 return -EIO; 684 return ret; 685 } 686 687 /* Return positive number for status, negative for an error */ 688 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd) 689 { 690 u8 *stat_buf; 691 int ret; 692 693 stat_buf = kmalloc(40, GFP_NOIO); 694 if (!stat_buf) 695 return -ENOMEM; 696 697 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22, 698 USB_TYPE_VENDOR | USB_DIR_IN | 699 USB_RECIP_INTERFACE, cmd, 0, stat_buf, 700 40, USB_CTRL_GET_TIMEOUT); 701 if (ret >= 0) 702 ret = stat_buf[5]; 703 kfree(stat_buf); 704 705 return ret; 706 } 707 708 #define MAKE_CMD_CASE(c) case (c): return #c 709 static const char *at76_get_cmd_string(u8 cmd_status) 710 { 711 switch (cmd_status) { 712 MAKE_CMD_CASE(CMD_SET_MIB); 713 MAKE_CMD_CASE(CMD_GET_MIB); 714 MAKE_CMD_CASE(CMD_SCAN); 715 MAKE_CMD_CASE(CMD_JOIN); 716 MAKE_CMD_CASE(CMD_START_IBSS); 717 MAKE_CMD_CASE(CMD_RADIO_ON); 718 MAKE_CMD_CASE(CMD_RADIO_OFF); 719 MAKE_CMD_CASE(CMD_STARTUP); 720 } 721 722 return "UNKNOWN"; 723 } 724 725 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf, 726 int buf_size) 727 { 728 int ret; 729 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) + 730 buf_size, GFP_KERNEL); 731 732 if (!cmd_buf) 733 return -ENOMEM; 734 735 cmd_buf->cmd = cmd; 736 cmd_buf->reserved = 0; 737 cmd_buf->size = cpu_to_le16(buf_size); 738 memcpy(cmd_buf->data, buf, buf_size); 739 740 at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size, 741 "issuing command %s (0x%02x)", 742 at76_get_cmd_string(cmd), cmd); 743 744 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, 745 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 746 0, 0, cmd_buf, 747 sizeof(struct at76_command) + buf_size, 748 USB_CTRL_GET_TIMEOUT); 749 kfree(cmd_buf); 750 return ret; 751 } 752 753 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c 754 static const char *at76_get_cmd_status_string(u8 cmd_status) 755 { 756 switch (cmd_status) { 757 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE); 758 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE); 759 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN); 760 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER); 761 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED); 762 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT); 763 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS); 764 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE); 765 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED); 766 } 767 768 return "UNKNOWN"; 769 } 770 771 /* Wait until the command is completed */ 772 static int at76_wait_completion(struct at76_priv *priv, int cmd) 773 { 774 int status = 0; 775 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT; 776 777 do { 778 status = at76_get_cmd_status(priv->udev, cmd); 779 if (status < 0) { 780 wiphy_err(priv->hw->wiphy, 781 "at76_get_cmd_status failed: %d\n", 782 status); 783 break; 784 } 785 786 at76_dbg(DBG_WAIT_COMPLETE, 787 "%s: Waiting on cmd %d, status = %d (%s)", 788 wiphy_name(priv->hw->wiphy), cmd, status, 789 at76_get_cmd_status_string(status)); 790 791 if (status != CMD_STATUS_IN_PROGRESS 792 && status != CMD_STATUS_IDLE) 793 break; 794 795 schedule_timeout_interruptible(HZ / 10); /* 100 ms */ 796 if (time_after(jiffies, timeout)) { 797 wiphy_err(priv->hw->wiphy, 798 "completion timeout for command %d\n", cmd); 799 status = -ETIMEDOUT; 800 break; 801 } 802 } while (1); 803 804 return status; 805 } 806 807 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf) 808 { 809 int ret; 810 811 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf, 812 offsetof(struct set_mib_buffer, 813 data) + buf->size); 814 if (ret < 0) 815 return ret; 816 817 ret = at76_wait_completion(priv, CMD_SET_MIB); 818 if (ret != CMD_STATUS_COMPLETE) { 819 wiphy_info(priv->hw->wiphy, 820 "set_mib: at76_wait_completion failed with %d\n", 821 ret); 822 ret = -EIO; 823 } 824 825 return ret; 826 } 827 828 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */ 829 static int at76_set_radio(struct at76_priv *priv, int enable) 830 { 831 int ret; 832 int cmd; 833 834 if (priv->radio_on == enable) 835 return 0; 836 837 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF; 838 839 ret = at76_set_card_command(priv->udev, cmd, NULL, 0); 840 if (ret < 0) 841 wiphy_err(priv->hw->wiphy, 842 "at76_set_card_command(%d) failed: %d\n", cmd, ret); 843 else 844 ret = 1; 845 846 priv->radio_on = enable; 847 return ret; 848 } 849 850 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */ 851 static int at76_set_pm_mode(struct at76_priv *priv) 852 { 853 int ret = 0; 854 855 priv->mib_buf.type = MIB_MAC_MGMT; 856 priv->mib_buf.size = 1; 857 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode); 858 priv->mib_buf.data.byte = priv->pm_mode; 859 860 ret = at76_set_mib(priv, &priv->mib_buf); 861 if (ret < 0) 862 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n", 863 ret); 864 865 return ret; 866 } 867 868 static int at76_set_preamble(struct at76_priv *priv, u8 type) 869 { 870 int ret = 0; 871 872 priv->mib_buf.type = MIB_LOCAL; 873 priv->mib_buf.size = 1; 874 priv->mib_buf.index = offsetof(struct mib_local, preamble_type); 875 priv->mib_buf.data.byte = type; 876 877 ret = at76_set_mib(priv, &priv->mib_buf); 878 if (ret < 0) 879 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n", 880 ret); 881 882 return ret; 883 } 884 885 static int at76_set_frag(struct at76_priv *priv, u16 size) 886 { 887 int ret = 0; 888 889 priv->mib_buf.type = MIB_MAC; 890 priv->mib_buf.size = 2; 891 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold); 892 priv->mib_buf.data.word = cpu_to_le16(size); 893 894 ret = at76_set_mib(priv, &priv->mib_buf); 895 if (ret < 0) 896 wiphy_err(priv->hw->wiphy, 897 "set_mib (frag threshold) failed: %d\n", ret); 898 899 return ret; 900 } 901 902 static int at76_set_rts(struct at76_priv *priv, u16 size) 903 { 904 int ret = 0; 905 906 priv->mib_buf.type = MIB_MAC; 907 priv->mib_buf.size = 2; 908 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold); 909 priv->mib_buf.data.word = cpu_to_le16(size); 910 911 ret = at76_set_mib(priv, &priv->mib_buf); 912 if (ret < 0) 913 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret); 914 915 return ret; 916 } 917 918 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff) 919 { 920 int ret = 0; 921 922 priv->mib_buf.type = MIB_LOCAL; 923 priv->mib_buf.size = 1; 924 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback); 925 priv->mib_buf.data.byte = onoff; 926 927 ret = at76_set_mib(priv, &priv->mib_buf); 928 if (ret < 0) 929 wiphy_err(priv->hw->wiphy, 930 "set_mib (autorate fallback) failed: %d\n", ret); 931 932 return ret; 933 } 934 935 static void at76_dump_mib_mac_addr(struct at76_priv *priv) 936 { 937 int i; 938 int ret; 939 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr), 940 GFP_KERNEL); 941 942 if (!m) 943 return; 944 945 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m, 946 sizeof(struct mib_mac_addr)); 947 if (ret < 0) { 948 wiphy_err(priv->hw->wiphy, 949 "at76_get_mib (MAC_ADDR) failed: %d\n", ret); 950 goto exit; 951 } 952 953 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x", 954 wiphy_name(priv->hw->wiphy), 955 m->mac_addr, m->res[0], m->res[1]); 956 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++) 957 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, " 958 "status %d", wiphy_name(priv->hw->wiphy), i, 959 m->group_addr[i], m->group_addr_status[i]); 960 exit: 961 kfree(m); 962 } 963 964 static void at76_dump_mib_mac_wep(struct at76_priv *priv) 965 { 966 int i; 967 int ret; 968 int key_len; 969 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL); 970 971 if (!m) 972 return; 973 974 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m, 975 sizeof(struct mib_mac_wep)); 976 if (ret < 0) { 977 wiphy_err(priv->hw->wiphy, 978 "at76_get_mib (MAC_WEP) failed: %d\n", ret); 979 goto exit; 980 } 981 982 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u " 983 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u " 984 "encr_level %u key %d", wiphy_name(priv->hw->wiphy), 985 m->privacy_invoked, m->wep_default_key_id, 986 m->wep_key_mapping_len, m->exclude_unencrypted, 987 le32_to_cpu(m->wep_icv_error_count), 988 le32_to_cpu(m->wep_excluded_count), m->encryption_level, 989 m->wep_default_key_id); 990 991 key_len = (m->encryption_level == 1) ? 992 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN; 993 994 for (i = 0; i < WEP_KEYS; i++) 995 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD", 996 wiphy_name(priv->hw->wiphy), i, 997 key_len, m->wep_default_keyvalue[i]); 998 exit: 999 kfree(m); 1000 } 1001 1002 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv) 1003 { 1004 int ret; 1005 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt), 1006 GFP_KERNEL); 1007 1008 if (!m) 1009 return; 1010 1011 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m, 1012 sizeof(struct mib_mac_mgmt)); 1013 if (ret < 0) { 1014 wiphy_err(priv->hw->wiphy, 1015 "at76_get_mib (MAC_MGMT) failed: %d\n", ret); 1016 goto exit; 1017 } 1018 1019 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration " 1020 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d " 1021 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d " 1022 "current_bssid %pM current_essid %*phD current_bss_type %d " 1023 "pm_mode %d ibss_change %d res %d " 1024 "multi_domain_capability_implemented %d " 1025 "international_roaming %d country_string %.3s", 1026 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period), 1027 le16_to_cpu(m->CFP_max_duration), 1028 le16_to_cpu(m->medium_occupancy_limit), 1029 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window), 1030 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period, 1031 m->CFP_period, m->current_bssid, 1032 IW_ESSID_MAX_SIZE, m->current_essid, 1033 m->current_bss_type, m->power_mgmt_mode, m->ibss_change, 1034 m->res, m->multi_domain_capability_implemented, 1035 m->multi_domain_capability_enabled, m->country_string); 1036 exit: 1037 kfree(m); 1038 } 1039 1040 static void at76_dump_mib_mac(struct at76_priv *priv) 1041 { 1042 int ret; 1043 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL); 1044 1045 if (!m) 1046 return; 1047 1048 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac)); 1049 if (ret < 0) { 1050 wiphy_err(priv->hw->wiphy, 1051 "at76_get_mib (MAC) failed: %d\n", ret); 1052 goto exit; 1053 } 1054 1055 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d " 1056 "max_rx_lifetime %d frag_threshold %d rts_threshold %d " 1057 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d " 1058 "scan_type %d scan_channel %d probe_delay %u " 1059 "min_channel_time %d max_channel_time %d listen_int %d " 1060 "desired_ssid %*phD desired_bssid %pM desired_bsstype %d", 1061 wiphy_name(priv->hw->wiphy), 1062 le32_to_cpu(m->max_tx_msdu_lifetime), 1063 le32_to_cpu(m->max_rx_lifetime), 1064 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold), 1065 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax), 1066 m->short_retry_time, m->long_retry_time, m->scan_type, 1067 m->scan_channel, le16_to_cpu(m->probe_delay), 1068 le16_to_cpu(m->min_channel_time), 1069 le16_to_cpu(m->max_channel_time), 1070 le16_to_cpu(m->listen_interval), 1071 IW_ESSID_MAX_SIZE, m->desired_ssid, 1072 m->desired_bssid, m->desired_bsstype); 1073 exit: 1074 kfree(m); 1075 } 1076 1077 static void at76_dump_mib_phy(struct at76_priv *priv) 1078 { 1079 int ret; 1080 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL); 1081 1082 if (!m) 1083 return; 1084 1085 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy)); 1086 if (ret < 0) { 1087 wiphy_err(priv->hw->wiphy, 1088 "at76_get_mib (PHY) failed: %d\n", ret); 1089 goto exit; 1090 } 1091 1092 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d " 1093 "sifs_time %d preamble_length %d plcp_header_length %d " 1094 "mpdu_max_length %d cca_mode_supported %d operation_rate_set " 1095 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d " 1096 "phy_type %d current_reg_domain %d", 1097 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold), 1098 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time), 1099 le16_to_cpu(m->preamble_length), 1100 le16_to_cpu(m->plcp_header_length), 1101 le16_to_cpu(m->mpdu_max_length), 1102 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0], 1103 m->operation_rate_set[1], m->operation_rate_set[2], 1104 m->operation_rate_set[3], m->channel_id, m->current_cca_mode, 1105 m->phy_type, m->current_reg_domain); 1106 exit: 1107 kfree(m); 1108 } 1109 1110 static void at76_dump_mib_local(struct at76_priv *priv) 1111 { 1112 int ret; 1113 struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL); 1114 1115 if (!m) 1116 return; 1117 1118 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m)); 1119 if (ret < 0) { 1120 wiphy_err(priv->hw->wiphy, 1121 "at76_get_mib (LOCAL) failed: %d\n", ret); 1122 goto exit; 1123 } 1124 1125 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d " 1126 "txautorate_fallback %d ssid_size %d promiscuous_mode %d " 1127 "preamble_type %d", wiphy_name(priv->hw->wiphy), 1128 m->beacon_enable, 1129 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode, 1130 m->preamble_type); 1131 exit: 1132 kfree(m); 1133 } 1134 1135 static void at76_dump_mib_mdomain(struct at76_priv *priv) 1136 { 1137 int ret; 1138 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL); 1139 1140 if (!m) 1141 return; 1142 1143 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m, 1144 sizeof(struct mib_mdomain)); 1145 if (ret < 0) { 1146 wiphy_err(priv->hw->wiphy, 1147 "at76_get_mib (MDOMAIN) failed: %d\n", ret); 1148 goto exit; 1149 } 1150 1151 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD", 1152 wiphy_name(priv->hw->wiphy), 1153 (int)sizeof(m->channel_list), m->channel_list); 1154 1155 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD", 1156 wiphy_name(priv->hw->wiphy), 1157 (int)sizeof(m->tx_powerlevel), m->tx_powerlevel); 1158 exit: 1159 kfree(m); 1160 } 1161 1162 /* Enable monitor mode */ 1163 static int at76_start_monitor(struct at76_priv *priv) 1164 { 1165 struct at76_req_scan scan; 1166 int ret; 1167 1168 memset(&scan, 0, sizeof(struct at76_req_scan)); 1169 eth_broadcast_addr(scan.bssid); 1170 1171 scan.channel = priv->channel; 1172 scan.scan_type = SCAN_TYPE_PASSIVE; 1173 scan.international_scan = 0; 1174 scan.min_channel_time = cpu_to_le16(priv->scan_min_time); 1175 scan.max_channel_time = cpu_to_le16(priv->scan_max_time); 1176 scan.probe_delay = cpu_to_le16(0); 1177 1178 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); 1179 if (ret >= 0) 1180 ret = at76_get_cmd_status(priv->udev, CMD_SCAN); 1181 1182 return ret; 1183 } 1184 1185 /* Calculate padding from txbuf->wlength (which excludes the USB TX header), 1186 likely to compensate a flaw in the AT76C503A USB part ... */ 1187 static inline int at76_calc_padding(int wlen) 1188 { 1189 /* add the USB TX header */ 1190 wlen += AT76_TX_HDRLEN; 1191 1192 wlen = wlen % 64; 1193 1194 if (wlen < 50) 1195 return 50 - wlen; 1196 1197 if (wlen >= 61) 1198 return 64 + 50 - wlen; 1199 1200 return 0; 1201 } 1202 1203 static void at76_rx_callback(struct urb *urb) 1204 { 1205 struct at76_priv *priv = urb->context; 1206 1207 priv->rx_tasklet.data = (unsigned long)urb; 1208 tasklet_schedule(&priv->rx_tasklet); 1209 } 1210 1211 static int at76_submit_rx_urb(struct at76_priv *priv) 1212 { 1213 int ret; 1214 int size; 1215 struct sk_buff *skb = priv->rx_skb; 1216 1217 if (!priv->rx_urb) { 1218 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n", 1219 __func__); 1220 return -EFAULT; 1221 } 1222 1223 if (!skb) { 1224 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer)); 1225 if (!skb) { 1226 wiphy_err(priv->hw->wiphy, 1227 "cannot allocate rx skbuff\n"); 1228 ret = -ENOMEM; 1229 goto exit; 1230 } 1231 priv->rx_skb = skb; 1232 } else { 1233 skb_push(skb, skb_headroom(skb)); 1234 skb_trim(skb, 0); 1235 } 1236 1237 size = skb_tailroom(skb); 1238 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe, 1239 skb_put(skb, size), size, at76_rx_callback, priv); 1240 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC); 1241 if (ret < 0) { 1242 if (ret == -ENODEV) 1243 at76_dbg(DBG_DEVSTART, 1244 "usb_submit_urb returned -ENODEV"); 1245 else 1246 wiphy_err(priv->hw->wiphy, 1247 "rx, usb_submit_urb failed: %d\n", ret); 1248 } 1249 1250 exit: 1251 if (ret < 0 && ret != -ENODEV) 1252 wiphy_err(priv->hw->wiphy, 1253 "cannot submit rx urb - please unload the driver and/or power cycle the device\n"); 1254 1255 return ret; 1256 } 1257 1258 /* Download external firmware */ 1259 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe) 1260 { 1261 int ret; 1262 int op_mode; 1263 int blockno = 0; 1264 int bsize; 1265 u8 *block; 1266 u8 *buf = fwe->extfw; 1267 int size = fwe->extfw_size; 1268 1269 if (!buf || !size) 1270 return -ENOENT; 1271 1272 op_mode = at76_get_op_mode(udev); 1273 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); 1274 1275 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { 1276 dev_err(&udev->dev, "unexpected opmode %d\n", op_mode); 1277 return -EINVAL; 1278 } 1279 1280 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); 1281 if (!block) 1282 return -ENOMEM; 1283 1284 at76_dbg(DBG_DEVSTART, "downloading external firmware"); 1285 1286 /* for fw >= 0.100, the device needs an extra empty block */ 1287 do { 1288 bsize = min_t(int, size, FW_BLOCK_SIZE); 1289 memcpy(block, buf, bsize); 1290 at76_dbg(DBG_DEVSTART, 1291 "ext fw, size left = %5d, bsize = %4d, blockno = %2d", 1292 size, bsize, blockno); 1293 ret = at76_load_ext_fw_block(udev, blockno, block, bsize); 1294 if (ret != bsize) { 1295 dev_err(&udev->dev, 1296 "loading %dth firmware block failed: %d\n", 1297 blockno, ret); 1298 ret = -EIO; 1299 goto exit; 1300 } 1301 buf += bsize; 1302 size -= bsize; 1303 blockno++; 1304 } while (bsize > 0); 1305 1306 if (at76_is_505a(fwe->board_type)) { 1307 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a"); 1308 schedule_timeout_interruptible(HZ / 5 + 1); 1309 } 1310 1311 exit: 1312 kfree(block); 1313 if (ret < 0) 1314 dev_err(&udev->dev, 1315 "downloading external firmware failed: %d\n", ret); 1316 return ret; 1317 } 1318 1319 /* Download internal firmware */ 1320 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe) 1321 { 1322 int ret; 1323 int need_remap = !at76_is_505a(fwe->board_type); 1324 1325 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size, 1326 need_remap ? 0 : 2 * HZ); 1327 1328 if (ret < 0) { 1329 dev_err(&udev->dev, 1330 "downloading internal fw failed with %d\n", ret); 1331 goto exit; 1332 } 1333 1334 at76_dbg(DBG_DEVSTART, "sending REMAP"); 1335 1336 /* no REMAP for 505A (see SF driver) */ 1337 if (need_remap) { 1338 ret = at76_remap(udev); 1339 if (ret < 0) { 1340 dev_err(&udev->dev, 1341 "sending REMAP failed with %d\n", ret); 1342 goto exit; 1343 } 1344 } 1345 1346 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds"); 1347 schedule_timeout_interruptible(2 * HZ + 1); 1348 usb_reset_device(udev); 1349 1350 exit: 1351 return ret; 1352 } 1353 1354 static int at76_startup_device(struct at76_priv *priv) 1355 { 1356 struct at76_card_config *ccfg = &priv->card_config; 1357 int ret; 1358 1359 at76_dbg(DBG_PARAMS, 1360 "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d " 1361 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size, 1362 priv->essid, IW_ESSID_MAX_SIZE, priv->essid, 1363 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra", 1364 priv->channel, priv->wep_enabled ? "enabled" : "disabled", 1365 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]); 1366 at76_dbg(DBG_PARAMS, 1367 "%s param: preamble %s rts %d retry %d frag %d " 1368 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy), 1369 preambles[priv->preamble_type], priv->rts_threshold, 1370 priv->short_retry_limit, priv->frag_threshold, 1371 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate == 1372 TX_RATE_2MBIT ? "2MBit" : priv->txrate == 1373 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate == 1374 TX_RATE_11MBIT ? "11MBit" : priv->txrate == 1375 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode); 1376 at76_dbg(DBG_PARAMS, 1377 "%s param: pm_mode %d pm_period %d auth_mode %s " 1378 "scan_times %d %d scan_mode %s", 1379 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period, 1380 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret", 1381 priv->scan_min_time, priv->scan_max_time, 1382 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive"); 1383 1384 memset(ccfg, 0, sizeof(struct at76_card_config)); 1385 ccfg->promiscuous_mode = 0; 1386 ccfg->short_retry_limit = priv->short_retry_limit; 1387 1388 if (priv->wep_enabled) { 1389 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN) 1390 ccfg->encryption_type = 2; 1391 else 1392 ccfg->encryption_type = 1; 1393 1394 /* jal: always exclude unencrypted if WEP is active */ 1395 ccfg->exclude_unencrypted = 1; 1396 } else { 1397 ccfg->exclude_unencrypted = 0; 1398 ccfg->encryption_type = 0; 1399 } 1400 1401 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold); 1402 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold); 1403 1404 memcpy(ccfg->basic_rate_set, hw_rates, 4); 1405 /* jal: really needed, we do a set_mib for autorate later ??? */ 1406 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0); 1407 ccfg->channel = priv->channel; 1408 ccfg->privacy_invoked = priv->wep_enabled; 1409 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE); 1410 ccfg->ssid_len = priv->essid_size; 1411 1412 ccfg->wep_default_key_id = priv->wep_key_id; 1413 memcpy(ccfg->wep_default_key_value, priv->wep_keys, 1414 sizeof(priv->wep_keys)); 1415 1416 ccfg->short_preamble = priv->preamble_type; 1417 ccfg->beacon_period = cpu_to_le16(priv->beacon_period); 1418 1419 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config, 1420 sizeof(struct at76_card_config)); 1421 if (ret < 0) { 1422 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n", 1423 ret); 1424 return ret; 1425 } 1426 1427 at76_wait_completion(priv, CMD_STARTUP); 1428 1429 /* remove BSSID from previous run */ 1430 eth_zero_addr(priv->bssid); 1431 1432 priv->scanning = false; 1433 1434 if (at76_set_radio(priv, 1) == 1) 1435 at76_wait_completion(priv, CMD_RADIO_ON); 1436 1437 ret = at76_set_preamble(priv, priv->preamble_type); 1438 if (ret < 0) 1439 return ret; 1440 1441 ret = at76_set_frag(priv, priv->frag_threshold); 1442 if (ret < 0) 1443 return ret; 1444 1445 ret = at76_set_rts(priv, priv->rts_threshold); 1446 if (ret < 0) 1447 return ret; 1448 1449 ret = at76_set_autorate_fallback(priv, 1450 priv->txrate == TX_RATE_AUTO ? 1 : 0); 1451 if (ret < 0) 1452 return ret; 1453 1454 ret = at76_set_pm_mode(priv); 1455 if (ret < 0) 1456 return ret; 1457 1458 if (at76_debug & DBG_MIB) { 1459 at76_dump_mib_mac(priv); 1460 at76_dump_mib_mac_addr(priv); 1461 at76_dump_mib_mac_mgmt(priv); 1462 at76_dump_mib_mac_wep(priv); 1463 at76_dump_mib_mdomain(priv); 1464 at76_dump_mib_phy(priv); 1465 at76_dump_mib_local(priv); 1466 } 1467 1468 return 0; 1469 } 1470 1471 /* Enable or disable promiscuous mode */ 1472 static void at76_work_set_promisc(struct work_struct *work) 1473 { 1474 struct at76_priv *priv = container_of(work, struct at76_priv, 1475 work_set_promisc); 1476 int ret = 0; 1477 1478 if (priv->device_unplugged) 1479 return; 1480 1481 mutex_lock(&priv->mtx); 1482 1483 priv->mib_buf.type = MIB_LOCAL; 1484 priv->mib_buf.size = 1; 1485 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode); 1486 priv->mib_buf.data.byte = priv->promisc ? 1 : 0; 1487 1488 ret = at76_set_mib(priv, &priv->mib_buf); 1489 if (ret < 0) 1490 wiphy_err(priv->hw->wiphy, 1491 "set_mib (promiscuous_mode) failed: %d\n", ret); 1492 1493 mutex_unlock(&priv->mtx); 1494 } 1495 1496 /* Submit Rx urb back to the device */ 1497 static void at76_work_submit_rx(struct work_struct *work) 1498 { 1499 struct at76_priv *priv = container_of(work, struct at76_priv, 1500 work_submit_rx); 1501 1502 mutex_lock(&priv->mtx); 1503 at76_submit_rx_urb(priv); 1504 mutex_unlock(&priv->mtx); 1505 } 1506 1507 /* This is a workaround to make scan working: 1508 * currently mac80211 does not process frames with no frequency 1509 * information. 1510 * However during scan the HW performs a sweep by itself, and we 1511 * are unable to know where the radio is actually tuned. 1512 * This function tries to do its best to guess this information.. 1513 * During scan, If the current frame is a beacon or a probe response, 1514 * the channel information is extracted from it. 1515 * When not scanning, for other frames, or if it happens that for 1516 * whatever reason we fail to parse beacons and probe responses, this 1517 * function returns the priv->channel information, that should be correct 1518 * at least when we are not scanning. 1519 */ 1520 static inline int at76_guess_freq(struct at76_priv *priv) 1521 { 1522 size_t el_off; 1523 const u8 *el; 1524 int channel = priv->channel; 1525 int len = priv->rx_skb->len; 1526 struct ieee80211_hdr *hdr = (void *)priv->rx_skb->data; 1527 1528 if (!priv->scanning) 1529 goto exit; 1530 1531 if (len < 24) 1532 goto exit; 1533 1534 if (ieee80211_is_probe_resp(hdr->frame_control)) { 1535 el_off = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); 1536 el = ((struct ieee80211_mgmt *)hdr)->u.probe_resp.variable; 1537 } else if (ieee80211_is_beacon(hdr->frame_control)) { 1538 el_off = offsetof(struct ieee80211_mgmt, u.beacon.variable); 1539 el = ((struct ieee80211_mgmt *)hdr)->u.beacon.variable; 1540 } else { 1541 goto exit; 1542 } 1543 len -= el_off; 1544 1545 el = cfg80211_find_ie(WLAN_EID_DS_PARAMS, el, len); 1546 if (el && el[1] > 0) 1547 channel = el[2]; 1548 1549 exit: 1550 return ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ); 1551 } 1552 1553 static void at76_rx_tasklet(unsigned long param) 1554 { 1555 struct urb *urb = (struct urb *)param; 1556 struct at76_priv *priv = urb->context; 1557 struct at76_rx_buffer *buf; 1558 struct ieee80211_rx_status rx_status = { 0 }; 1559 1560 if (priv->device_unplugged) { 1561 at76_dbg(DBG_DEVSTART, "device unplugged"); 1562 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status); 1563 return; 1564 } 1565 1566 if (!priv->rx_skb || !priv->rx_skb->data) 1567 return; 1568 1569 buf = (struct at76_rx_buffer *)priv->rx_skb->data; 1570 1571 if (urb->status != 0) { 1572 if (urb->status != -ENOENT && urb->status != -ECONNRESET) 1573 at76_dbg(DBG_URB, 1574 "%s %s: - nonzero Rx bulk status received: %d", 1575 __func__, wiphy_name(priv->hw->wiphy), 1576 urb->status); 1577 return; 1578 } 1579 1580 at76_dbg(DBG_RX_ATMEL_HDR, 1581 "%s: rx frame: rate %d rssi %d noise %d link %d", 1582 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi, 1583 buf->noise_level, buf->link_quality); 1584 1585 skb_pull(priv->rx_skb, AT76_RX_HDRLEN); 1586 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength)); 1587 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data, 1588 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len); 1589 1590 rx_status.signal = buf->rssi; 1591 rx_status.flag |= RX_FLAG_DECRYPTED; 1592 rx_status.flag |= RX_FLAG_IV_STRIPPED; 1593 rx_status.band = NL80211_BAND_2GHZ; 1594 rx_status.freq = at76_guess_freq(priv); 1595 1596 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d", 1597 priv->rx_skb->len, priv->rx_skb->data_len); 1598 memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status)); 1599 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb); 1600 1601 /* Use a new skb for the next receive */ 1602 priv->rx_skb = NULL; 1603 1604 at76_submit_rx_urb(priv); 1605 } 1606 1607 /* Load firmware into kernel memory and parse it */ 1608 static struct fwentry *at76_load_firmware(struct usb_device *udev, 1609 enum board_type board_type) 1610 { 1611 int ret; 1612 char *str; 1613 struct at76_fw_header *fwh; 1614 struct fwentry *fwe = &firmwares[board_type]; 1615 1616 mutex_lock(&fw_mutex); 1617 1618 if (fwe->loaded) { 1619 at76_dbg(DBG_FW, "re-using previously loaded fw"); 1620 goto exit; 1621 } 1622 1623 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname); 1624 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev); 1625 if (ret < 0) { 1626 dev_err(&udev->dev, "firmware %s not found!\n", 1627 fwe->fwname); 1628 dev_err(&udev->dev, 1629 "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n"); 1630 goto exit; 1631 } 1632 1633 at76_dbg(DBG_FW, "got it."); 1634 fwh = (struct at76_fw_header *)(fwe->fw->data); 1635 1636 if (fwe->fw->size <= sizeof(*fwh)) { 1637 dev_err(&udev->dev, 1638 "firmware is too short (0x%zx)\n", fwe->fw->size); 1639 goto exit; 1640 } 1641 1642 /* CRC currently not checked */ 1643 fwe->board_type = le32_to_cpu(fwh->board_type); 1644 if (fwe->board_type != board_type) { 1645 dev_err(&udev->dev, 1646 "board type mismatch, requested %u, got %u\n", 1647 board_type, fwe->board_type); 1648 goto exit; 1649 } 1650 1651 fwe->fw_version.major = fwh->major; 1652 fwe->fw_version.minor = fwh->minor; 1653 fwe->fw_version.patch = fwh->patch; 1654 fwe->fw_version.build = fwh->build; 1655 1656 str = (char *)fwh + le32_to_cpu(fwh->str_offset); 1657 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset); 1658 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len); 1659 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset); 1660 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len); 1661 1662 fwe->loaded = 1; 1663 1664 dev_printk(KERN_DEBUG, &udev->dev, 1665 "using firmware %s (version %d.%d.%d-%d)\n", 1666 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build); 1667 1668 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type, 1669 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len), 1670 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len)); 1671 at76_dbg(DBG_DEVSTART, "firmware id %s", str); 1672 1673 exit: 1674 mutex_unlock(&fw_mutex); 1675 1676 if (fwe->loaded) 1677 return fwe; 1678 else 1679 return NULL; 1680 } 1681 1682 static int at76_join(struct at76_priv *priv) 1683 { 1684 struct at76_req_join join; 1685 int ret; 1686 1687 memset(&join, 0, sizeof(struct at76_req_join)); 1688 memcpy(join.essid, priv->essid, priv->essid_size); 1689 join.essid_size = priv->essid_size; 1690 memcpy(join.bssid, priv->bssid, ETH_ALEN); 1691 join.bss_type = INFRASTRUCTURE_MODE; 1692 join.channel = priv->channel; 1693 join.timeout = cpu_to_le16(2000); 1694 1695 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__); 1696 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join, 1697 sizeof(struct at76_req_join)); 1698 1699 if (ret < 0) { 1700 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n", 1701 ret); 1702 return 0; 1703 } 1704 1705 ret = at76_wait_completion(priv, CMD_JOIN); 1706 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret); 1707 if (ret != CMD_STATUS_COMPLETE) { 1708 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n", 1709 ret); 1710 return 0; 1711 } 1712 1713 at76_set_pm_mode(priv); 1714 1715 return 0; 1716 } 1717 1718 static void at76_work_join_bssid(struct work_struct *work) 1719 { 1720 struct at76_priv *priv = container_of(work, struct at76_priv, 1721 work_join_bssid); 1722 1723 if (priv->device_unplugged) 1724 return; 1725 1726 mutex_lock(&priv->mtx); 1727 1728 if (is_valid_ether_addr(priv->bssid)) 1729 at76_join(priv); 1730 1731 mutex_unlock(&priv->mtx); 1732 } 1733 1734 static void at76_mac80211_tx_callback(struct urb *urb) 1735 { 1736 struct at76_priv *priv = urb->context; 1737 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 1738 1739 at76_dbg(DBG_MAC80211, "%s()", __func__); 1740 1741 switch (urb->status) { 1742 case 0: 1743 /* success */ 1744 info->flags |= IEEE80211_TX_STAT_ACK; 1745 break; 1746 case -ENOENT: 1747 case -ECONNRESET: 1748 /* fail, urb has been unlinked */ 1749 /* FIXME: add error message */ 1750 break; 1751 default: 1752 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d", 1753 __func__, urb->status); 1754 break; 1755 } 1756 1757 memset(&info->status, 0, sizeof(info->status)); 1758 1759 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 1760 1761 priv->tx_skb = NULL; 1762 1763 ieee80211_wake_queues(priv->hw); 1764 } 1765 1766 static void at76_mac80211_tx(struct ieee80211_hw *hw, 1767 struct ieee80211_tx_control *control, 1768 struct sk_buff *skb) 1769 { 1770 struct at76_priv *priv = hw->priv; 1771 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer; 1772 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1773 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1774 int padding, submit_len, ret; 1775 1776 at76_dbg(DBG_MAC80211, "%s()", __func__); 1777 1778 if (priv->tx_urb->status == -EINPROGRESS) { 1779 wiphy_err(priv->hw->wiphy, 1780 "%s called while tx urb is pending\n", __func__); 1781 dev_kfree_skb_any(skb); 1782 return; 1783 } 1784 1785 /* The following code lines are important when the device is going to 1786 * authenticate with a new bssid. The driver must send CMD_JOIN before 1787 * an authentication frame is transmitted. For this to succeed, the 1788 * correct bssid of the AP must be known. As mac80211 does not inform 1789 * drivers about the bssid prior to the authentication process the 1790 * following workaround is necessary. If the TX frame is an 1791 * authentication frame extract the bssid and send the CMD_JOIN. */ 1792 if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) { 1793 if (!ether_addr_equal_64bits(priv->bssid, mgmt->bssid)) { 1794 memcpy(priv->bssid, mgmt->bssid, ETH_ALEN); 1795 ieee80211_queue_work(hw, &priv->work_join_bssid); 1796 dev_kfree_skb_any(skb); 1797 return; 1798 } 1799 } 1800 1801 ieee80211_stop_queues(hw); 1802 1803 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */ 1804 1805 WARN_ON(priv->tx_skb != NULL); 1806 1807 priv->tx_skb = skb; 1808 padding = at76_calc_padding(skb->len); 1809 submit_len = AT76_TX_HDRLEN + skb->len + padding; 1810 1811 /* setup 'Atmel' header */ 1812 memset(tx_buffer, 0, sizeof(*tx_buffer)); 1813 tx_buffer->padding = padding; 1814 tx_buffer->wlength = cpu_to_le16(skb->len); 1815 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value; 1816 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved)); 1817 memcpy(tx_buffer->packet, skb->data, skb->len); 1818 1819 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr", 1820 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength), 1821 tx_buffer->padding, tx_buffer->tx_rate); 1822 1823 /* send stuff */ 1824 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len, 1825 "%s(): tx_buffer %d bytes:", __func__, submit_len); 1826 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer, 1827 submit_len, at76_mac80211_tx_callback, priv); 1828 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC); 1829 if (ret) { 1830 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret); 1831 if (ret == -EINVAL) 1832 wiphy_err(priv->hw->wiphy, 1833 "-EINVAL: tx urb %p hcpriv %p complete %p\n", 1834 priv->tx_urb, 1835 priv->tx_urb->hcpriv, priv->tx_urb->complete); 1836 } 1837 } 1838 1839 static int at76_mac80211_start(struct ieee80211_hw *hw) 1840 { 1841 struct at76_priv *priv = hw->priv; 1842 int ret; 1843 1844 at76_dbg(DBG_MAC80211, "%s()", __func__); 1845 1846 mutex_lock(&priv->mtx); 1847 1848 ret = at76_submit_rx_urb(priv); 1849 if (ret < 0) { 1850 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n", 1851 ret); 1852 goto error; 1853 } 1854 1855 at76_startup_device(priv); 1856 1857 at76_start_monitor(priv); 1858 1859 error: 1860 mutex_unlock(&priv->mtx); 1861 1862 return 0; 1863 } 1864 1865 static void at76_mac80211_stop(struct ieee80211_hw *hw) 1866 { 1867 struct at76_priv *priv = hw->priv; 1868 1869 at76_dbg(DBG_MAC80211, "%s()", __func__); 1870 1871 cancel_delayed_work(&priv->dwork_hw_scan); 1872 cancel_work_sync(&priv->work_join_bssid); 1873 cancel_work_sync(&priv->work_set_promisc); 1874 1875 mutex_lock(&priv->mtx); 1876 1877 if (!priv->device_unplugged) { 1878 /* We are called by "ifconfig ethX down", not because the 1879 * device is not available anymore. */ 1880 at76_set_radio(priv, 0); 1881 1882 /* We unlink rx_urb because at76_open() re-submits it. 1883 * If unplugged, at76_delete_device() takes care of it. */ 1884 usb_kill_urb(priv->rx_urb); 1885 } 1886 1887 mutex_unlock(&priv->mtx); 1888 } 1889 1890 static int at76_add_interface(struct ieee80211_hw *hw, 1891 struct ieee80211_vif *vif) 1892 { 1893 struct at76_priv *priv = hw->priv; 1894 int ret = 0; 1895 1896 at76_dbg(DBG_MAC80211, "%s()", __func__); 1897 1898 mutex_lock(&priv->mtx); 1899 1900 switch (vif->type) { 1901 case NL80211_IFTYPE_STATION: 1902 priv->iw_mode = IW_MODE_INFRA; 1903 break; 1904 default: 1905 ret = -EOPNOTSUPP; 1906 goto exit; 1907 } 1908 1909 exit: 1910 mutex_unlock(&priv->mtx); 1911 1912 return ret; 1913 } 1914 1915 static void at76_remove_interface(struct ieee80211_hw *hw, 1916 struct ieee80211_vif *vif) 1917 { 1918 at76_dbg(DBG_MAC80211, "%s()", __func__); 1919 } 1920 1921 static void at76_dwork_hw_scan(struct work_struct *work) 1922 { 1923 struct at76_priv *priv = container_of(work, struct at76_priv, 1924 dwork_hw_scan.work); 1925 struct cfg80211_scan_info info = { 1926 .aborted = false, 1927 }; 1928 int ret; 1929 1930 if (priv->device_unplugged) 1931 return; 1932 1933 mutex_lock(&priv->mtx); 1934 1935 ret = at76_get_cmd_status(priv->udev, CMD_SCAN); 1936 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret); 1937 1938 /* FIXME: add maximum time for scan to complete */ 1939 1940 if (ret != CMD_STATUS_COMPLETE) { 1941 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan, 1942 SCAN_POLL_INTERVAL); 1943 mutex_unlock(&priv->mtx); 1944 return; 1945 } 1946 1947 if (is_valid_ether_addr(priv->bssid)) 1948 at76_join(priv); 1949 1950 priv->scanning = false; 1951 1952 mutex_unlock(&priv->mtx); 1953 1954 ieee80211_scan_completed(priv->hw, &info); 1955 1956 ieee80211_wake_queues(priv->hw); 1957 } 1958 1959 static int at76_hw_scan(struct ieee80211_hw *hw, 1960 struct ieee80211_vif *vif, 1961 struct ieee80211_scan_request *hw_req) 1962 { 1963 struct cfg80211_scan_request *req = &hw_req->req; 1964 struct at76_priv *priv = hw->priv; 1965 struct at76_req_scan scan; 1966 u8 *ssid = NULL; 1967 int ret, len = 0; 1968 1969 at76_dbg(DBG_MAC80211, "%s():", __func__); 1970 1971 if (priv->device_unplugged) 1972 return 0; 1973 1974 mutex_lock(&priv->mtx); 1975 1976 ieee80211_stop_queues(hw); 1977 1978 memset(&scan, 0, sizeof(struct at76_req_scan)); 1979 eth_broadcast_addr(scan.bssid); 1980 1981 if (req->n_ssids) { 1982 scan.scan_type = SCAN_TYPE_ACTIVE; 1983 ssid = req->ssids[0].ssid; 1984 len = req->ssids[0].ssid_len; 1985 } else { 1986 scan.scan_type = SCAN_TYPE_PASSIVE; 1987 } 1988 1989 if (len) { 1990 memcpy(scan.essid, ssid, len); 1991 scan.essid_size = len; 1992 } 1993 1994 scan.min_channel_time = cpu_to_le16(priv->scan_min_time); 1995 scan.max_channel_time = cpu_to_le16(priv->scan_max_time); 1996 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000); 1997 scan.international_scan = 0; 1998 1999 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__); 2000 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); 2001 2002 if (ret < 0) { 2003 wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret); 2004 goto exit; 2005 } 2006 2007 priv->scanning = true; 2008 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan, 2009 SCAN_POLL_INTERVAL); 2010 2011 exit: 2012 mutex_unlock(&priv->mtx); 2013 2014 return 0; 2015 } 2016 2017 static int at76_config(struct ieee80211_hw *hw, u32 changed) 2018 { 2019 struct at76_priv *priv = hw->priv; 2020 2021 at76_dbg(DBG_MAC80211, "%s(): channel %d", 2022 __func__, hw->conf.chandef.chan->hw_value); 2023 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:"); 2024 2025 mutex_lock(&priv->mtx); 2026 2027 priv->channel = hw->conf.chandef.chan->hw_value; 2028 2029 if (is_valid_ether_addr(priv->bssid)) 2030 at76_join(priv); 2031 else 2032 at76_start_monitor(priv); 2033 2034 mutex_unlock(&priv->mtx); 2035 2036 return 0; 2037 } 2038 2039 static void at76_bss_info_changed(struct ieee80211_hw *hw, 2040 struct ieee80211_vif *vif, 2041 struct ieee80211_bss_conf *conf, 2042 u32 changed) 2043 { 2044 struct at76_priv *priv = hw->priv; 2045 2046 at76_dbg(DBG_MAC80211, "%s():", __func__); 2047 2048 if (!(changed & BSS_CHANGED_BSSID)) 2049 return; 2050 2051 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:"); 2052 2053 mutex_lock(&priv->mtx); 2054 2055 memcpy(priv->bssid, conf->bssid, ETH_ALEN); 2056 2057 if (is_valid_ether_addr(priv->bssid)) 2058 /* mac80211 is joining a bss */ 2059 at76_join(priv); 2060 2061 mutex_unlock(&priv->mtx); 2062 } 2063 2064 /* must be atomic */ 2065 static void at76_configure_filter(struct ieee80211_hw *hw, 2066 unsigned int changed_flags, 2067 unsigned int *total_flags, u64 multicast) 2068 { 2069 struct at76_priv *priv = hw->priv; 2070 int flags; 2071 2072 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x " 2073 "total_flags=0x%08x", 2074 __func__, changed_flags, *total_flags); 2075 2076 flags = changed_flags & AT76_SUPPORTED_FILTERS; 2077 *total_flags = AT76_SUPPORTED_FILTERS; 2078 2079 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */ 2080 if (priv->device_unplugged) 2081 return; 2082 2083 /* FIXME: access to priv->promisc should be protected with 2084 * priv->mtx, but it's impossible because this function needs to be 2085 * atomic */ 2086 2087 if (flags && !priv->promisc) { 2088 /* mac80211 wants us to enable promiscuous mode */ 2089 priv->promisc = 1; 2090 } else if (!flags && priv->promisc) { 2091 /* we need to disable promiscuous mode */ 2092 priv->promisc = 0; 2093 } else 2094 return; 2095 2096 ieee80211_queue_work(hw, &priv->work_set_promisc); 2097 } 2098 2099 static int at76_set_wep(struct at76_priv *priv) 2100 { 2101 int ret = 0; 2102 struct mib_mac_wep *mib_data = &priv->mib_buf.data.wep_mib; 2103 2104 priv->mib_buf.type = MIB_MAC_WEP; 2105 priv->mib_buf.size = sizeof(struct mib_mac_wep); 2106 priv->mib_buf.index = 0; 2107 2108 memset(mib_data, 0, sizeof(*mib_data)); 2109 2110 if (priv->wep_enabled) { 2111 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN) 2112 mib_data->encryption_level = 2; 2113 else 2114 mib_data->encryption_level = 1; 2115 2116 /* always exclude unencrypted if WEP is active */ 2117 mib_data->exclude_unencrypted = 1; 2118 } else { 2119 mib_data->exclude_unencrypted = 0; 2120 mib_data->encryption_level = 0; 2121 } 2122 2123 mib_data->privacy_invoked = priv->wep_enabled; 2124 mib_data->wep_default_key_id = priv->wep_key_id; 2125 memcpy(mib_data->wep_default_keyvalue, priv->wep_keys, 2126 sizeof(priv->wep_keys)); 2127 2128 ret = at76_set_mib(priv, &priv->mib_buf); 2129 2130 if (ret < 0) 2131 wiphy_err(priv->hw->wiphy, 2132 "set_mib (wep) failed: %d\n", ret); 2133 2134 return ret; 2135 } 2136 2137 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 2138 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 2139 struct ieee80211_key_conf *key) 2140 { 2141 struct at76_priv *priv = hw->priv; 2142 2143 int i; 2144 2145 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d " 2146 "key->keylen %d", 2147 __func__, cmd, key->cipher, key->keyidx, key->keylen); 2148 2149 if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) && 2150 (key->cipher != WLAN_CIPHER_SUITE_WEP104)) 2151 return -EOPNOTSUPP; 2152 2153 key->hw_key_idx = key->keyidx; 2154 2155 mutex_lock(&priv->mtx); 2156 2157 switch (cmd) { 2158 case SET_KEY: 2159 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen); 2160 priv->wep_keys_len[key->keyidx] = key->keylen; 2161 2162 /* FIXME: find out how to do this properly */ 2163 priv->wep_key_id = key->keyidx; 2164 2165 break; 2166 case DISABLE_KEY: 2167 default: 2168 priv->wep_keys_len[key->keyidx] = 0; 2169 break; 2170 } 2171 2172 priv->wep_enabled = 0; 2173 2174 for (i = 0; i < WEP_KEYS; i++) { 2175 if (priv->wep_keys_len[i] != 0) 2176 priv->wep_enabled = 1; 2177 } 2178 2179 at76_set_wep(priv); 2180 2181 mutex_unlock(&priv->mtx); 2182 2183 return 0; 2184 } 2185 2186 static const struct ieee80211_ops at76_ops = { 2187 .tx = at76_mac80211_tx, 2188 .add_interface = at76_add_interface, 2189 .remove_interface = at76_remove_interface, 2190 .config = at76_config, 2191 .bss_info_changed = at76_bss_info_changed, 2192 .configure_filter = at76_configure_filter, 2193 .start = at76_mac80211_start, 2194 .stop = at76_mac80211_stop, 2195 .hw_scan = at76_hw_scan, 2196 .set_key = at76_set_key, 2197 }; 2198 2199 /* Allocate network device and initialize private data */ 2200 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev) 2201 { 2202 struct ieee80211_hw *hw; 2203 struct at76_priv *priv; 2204 2205 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops); 2206 if (!hw) { 2207 printk(KERN_ERR DRIVER_NAME ": could not register" 2208 " ieee80211_hw\n"); 2209 return NULL; 2210 } 2211 2212 priv = hw->priv; 2213 priv->hw = hw; 2214 2215 priv->udev = udev; 2216 2217 mutex_init(&priv->mtx); 2218 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc); 2219 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx); 2220 INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid); 2221 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan); 2222 2223 tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0); 2224 2225 priv->pm_mode = AT76_PM_OFF; 2226 priv->pm_period = 0; 2227 2228 /* unit us */ 2229 2230 return priv; 2231 } 2232 2233 static int at76_alloc_urbs(struct at76_priv *priv, 2234 struct usb_interface *interface) 2235 { 2236 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out; 2237 int i; 2238 int buffer_size; 2239 struct usb_host_interface *iface_desc; 2240 2241 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); 2242 2243 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__, 2244 interface->altsetting[0].desc.bNumEndpoints); 2245 2246 ep_in = NULL; 2247 ep_out = NULL; 2248 iface_desc = interface->cur_altsetting; 2249 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { 2250 endpoint = &iface_desc->endpoint[i].desc; 2251 2252 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x", 2253 __func__, i, endpoint->bEndpointAddress, 2254 endpoint->bmAttributes); 2255 2256 if (!ep_in && usb_endpoint_is_bulk_in(endpoint)) 2257 ep_in = endpoint; 2258 2259 if (!ep_out && usb_endpoint_is_bulk_out(endpoint)) 2260 ep_out = endpoint; 2261 } 2262 2263 if (!ep_in || !ep_out) { 2264 dev_err(&interface->dev, "bulk endpoints missing\n"); 2265 return -ENXIO; 2266 } 2267 2268 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress); 2269 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress); 2270 2271 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 2272 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 2273 if (!priv->rx_urb || !priv->tx_urb) { 2274 dev_err(&interface->dev, "cannot allocate URB\n"); 2275 return -ENOMEM; 2276 } 2277 2278 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE; 2279 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); 2280 if (!priv->bulk_out_buffer) 2281 return -ENOMEM; 2282 2283 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); 2284 2285 return 0; 2286 } 2287 2288 static struct ieee80211_rate at76_rates[] = { 2289 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, }, 2290 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, }, 2291 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, }, 2292 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, }, 2293 }; 2294 2295 static struct ieee80211_channel at76_channels[] = { 2296 { .center_freq = 2412, .hw_value = 1 }, 2297 { .center_freq = 2417, .hw_value = 2 }, 2298 { .center_freq = 2422, .hw_value = 3 }, 2299 { .center_freq = 2427, .hw_value = 4 }, 2300 { .center_freq = 2432, .hw_value = 5 }, 2301 { .center_freq = 2437, .hw_value = 6 }, 2302 { .center_freq = 2442, .hw_value = 7 }, 2303 { .center_freq = 2447, .hw_value = 8 }, 2304 { .center_freq = 2452, .hw_value = 9 }, 2305 { .center_freq = 2457, .hw_value = 10 }, 2306 { .center_freq = 2462, .hw_value = 11 }, 2307 { .center_freq = 2467, .hw_value = 12 }, 2308 { .center_freq = 2472, .hw_value = 13 }, 2309 { .center_freq = 2484, .hw_value = 14 } 2310 }; 2311 2312 static struct ieee80211_supported_band at76_supported_band = { 2313 .channels = at76_channels, 2314 .n_channels = ARRAY_SIZE(at76_channels), 2315 .bitrates = at76_rates, 2316 .n_bitrates = ARRAY_SIZE(at76_rates), 2317 }; 2318 2319 /* Register network device and initialize the hardware */ 2320 static int at76_init_new_device(struct at76_priv *priv, 2321 struct usb_interface *interface) 2322 { 2323 struct wiphy *wiphy; 2324 size_t len; 2325 int ret; 2326 2327 /* set up the endpoint information */ 2328 /* check out the endpoints */ 2329 2330 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints", 2331 interface->cur_altsetting->desc.bNumEndpoints); 2332 2333 ret = at76_alloc_urbs(priv, interface); 2334 if (ret < 0) 2335 goto exit; 2336 2337 /* MAC address */ 2338 ret = at76_get_hw_config(priv); 2339 if (ret < 0) { 2340 dev_err(&interface->dev, "cannot get MAC address\n"); 2341 goto exit; 2342 } 2343 2344 priv->domain = at76_get_reg_domain(priv->regulatory_domain); 2345 2346 priv->channel = DEF_CHANNEL; 2347 priv->iw_mode = IW_MODE_INFRA; 2348 priv->rts_threshold = DEF_RTS_THRESHOLD; 2349 priv->frag_threshold = DEF_FRAG_THRESHOLD; 2350 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT; 2351 priv->txrate = TX_RATE_AUTO; 2352 priv->preamble_type = PREAMBLE_TYPE_LONG; 2353 priv->beacon_period = 100; 2354 priv->auth_mode = WLAN_AUTH_OPEN; 2355 priv->scan_min_time = DEF_SCAN_MIN_TIME; 2356 priv->scan_max_time = DEF_SCAN_MAX_TIME; 2357 priv->scan_mode = SCAN_TYPE_ACTIVE; 2358 priv->device_unplugged = 0; 2359 2360 /* mac80211 initialisation */ 2361 wiphy = priv->hw->wiphy; 2362 priv->hw->wiphy->max_scan_ssids = 1; 2363 priv->hw->wiphy->max_scan_ie_len = 0; 2364 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); 2365 priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = &at76_supported_band; 2366 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS); 2367 ieee80211_hw_set(priv->hw, SIGNAL_UNSPEC); 2368 priv->hw->max_signal = 100; 2369 2370 SET_IEEE80211_DEV(priv->hw, &interface->dev); 2371 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); 2372 2373 len = sizeof(wiphy->fw_version); 2374 snprintf(wiphy->fw_version, len, "%d.%d.%d-%d", 2375 priv->fw_version.major, priv->fw_version.minor, 2376 priv->fw_version.patch, priv->fw_version.build); 2377 2378 wiphy->hw_version = priv->board_type; 2379 2380 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 2381 2382 ret = ieee80211_register_hw(priv->hw); 2383 if (ret) { 2384 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n", 2385 ret); 2386 goto exit; 2387 } 2388 2389 priv->mac80211_registered = 1; 2390 2391 wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n", 2392 dev_name(&interface->dev), priv->mac_addr, 2393 priv->fw_version.major, priv->fw_version.minor, 2394 priv->fw_version.patch, priv->fw_version.build); 2395 wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n", 2396 priv->regulatory_domain, priv->domain->name); 2397 2398 exit: 2399 return ret; 2400 } 2401 2402 static void at76_delete_device(struct at76_priv *priv) 2403 { 2404 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); 2405 2406 /* The device is gone, don't bother turning it off */ 2407 priv->device_unplugged = 1; 2408 2409 tasklet_kill(&priv->rx_tasklet); 2410 2411 if (priv->mac80211_registered) 2412 ieee80211_unregister_hw(priv->hw); 2413 2414 if (priv->tx_urb) { 2415 usb_kill_urb(priv->tx_urb); 2416 usb_free_urb(priv->tx_urb); 2417 } 2418 if (priv->rx_urb) { 2419 usb_kill_urb(priv->rx_urb); 2420 usb_free_urb(priv->rx_urb); 2421 } 2422 2423 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__); 2424 2425 kfree(priv->bulk_out_buffer); 2426 2427 del_timer_sync(&ledtrig_tx_timer); 2428 2429 kfree_skb(priv->rx_skb); 2430 2431 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw", 2432 __func__); 2433 ieee80211_free_hw(priv->hw); 2434 2435 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); 2436 } 2437 2438 static int at76_probe(struct usb_interface *interface, 2439 const struct usb_device_id *id) 2440 { 2441 int ret; 2442 struct at76_priv *priv; 2443 struct fwentry *fwe; 2444 struct usb_device *udev; 2445 int op_mode; 2446 int need_ext_fw = 0; 2447 struct mib_fw_version *fwv = NULL; 2448 int board_type = (int)id->driver_info; 2449 2450 udev = usb_get_dev(interface_to_usbdev(interface)); 2451 2452 fwv = kmalloc(sizeof(*fwv), GFP_KERNEL); 2453 if (!fwv) { 2454 ret = -ENOMEM; 2455 goto exit; 2456 } 2457 2458 /* Load firmware into kernel memory */ 2459 fwe = at76_load_firmware(udev, board_type); 2460 if (!fwe) { 2461 ret = -ENOENT; 2462 goto exit; 2463 } 2464 2465 op_mode = at76_get_op_mode(udev); 2466 2467 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); 2468 2469 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ??? 2470 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */ 2471 2472 if (op_mode == OPMODE_HW_CONFIG_MODE) { 2473 dev_err(&interface->dev, 2474 "cannot handle a device in HW_CONFIG_MODE\n"); 2475 ret = -EBUSY; 2476 goto exit; 2477 } 2478 2479 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH 2480 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { 2481 /* download internal firmware part */ 2482 dev_printk(KERN_DEBUG, &interface->dev, 2483 "downloading internal firmware\n"); 2484 ret = at76_load_internal_fw(udev, fwe); 2485 if (ret < 0) { 2486 dev_err(&interface->dev, 2487 "error %d downloading internal firmware\n", 2488 ret); 2489 } 2490 goto exit; 2491 } 2492 2493 /* Internal firmware already inside the device. Get firmware 2494 * version to test if external firmware is loaded. 2495 * This works only for newer firmware, e.g. the Intersil 0.90.x 2496 * says "control timeout on ep0in" and subsequent 2497 * at76_get_op_mode() fail too :-( */ 2498 2499 /* if version >= 0.100.x.y or device with built-in flash we can 2500 * query the device for the fw version */ 2501 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100) 2502 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) { 2503 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv)); 2504 if (ret < 0 || (fwv->major | fwv->minor) == 0) 2505 need_ext_fw = 1; 2506 } else 2507 /* No way to check firmware version, reload to be sure */ 2508 need_ext_fw = 1; 2509 2510 if (need_ext_fw) { 2511 dev_printk(KERN_DEBUG, &interface->dev, 2512 "downloading external firmware\n"); 2513 2514 ret = at76_load_external_fw(udev, fwe); 2515 if (ret < 0) 2516 goto exit; 2517 2518 /* Re-check firmware version */ 2519 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv)); 2520 if (ret < 0) { 2521 dev_err(&interface->dev, 2522 "error %d getting firmware version\n", ret); 2523 goto exit; 2524 } 2525 } 2526 2527 priv = at76_alloc_new_device(udev); 2528 if (!priv) { 2529 ret = -ENOMEM; 2530 goto exit; 2531 } 2532 2533 usb_set_intfdata(interface, priv); 2534 2535 memcpy(&priv->fw_version, fwv, sizeof(struct mib_fw_version)); 2536 priv->board_type = board_type; 2537 2538 ret = at76_init_new_device(priv, interface); 2539 if (ret < 0) 2540 at76_delete_device(priv); 2541 2542 exit: 2543 kfree(fwv); 2544 if (ret < 0) 2545 usb_put_dev(udev); 2546 return ret; 2547 } 2548 2549 static void at76_disconnect(struct usb_interface *interface) 2550 { 2551 struct at76_priv *priv; 2552 2553 priv = usb_get_intfdata(interface); 2554 usb_set_intfdata(interface, NULL); 2555 2556 /* Disconnect after loading internal firmware */ 2557 if (!priv) 2558 return; 2559 2560 wiphy_info(priv->hw->wiphy, "disconnecting\n"); 2561 at76_delete_device(priv); 2562 usb_put_dev(priv->udev); 2563 dev_info(&interface->dev, "disconnected\n"); 2564 } 2565 2566 /* Structure for registering this driver with the USB subsystem */ 2567 static struct usb_driver at76_driver = { 2568 .name = DRIVER_NAME, 2569 .probe = at76_probe, 2570 .disconnect = at76_disconnect, 2571 .id_table = dev_table, 2572 .disable_hub_initiated_lpm = 1, 2573 }; 2574 2575 static int __init at76_mod_init(void) 2576 { 2577 int result; 2578 2579 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n"); 2580 2581 mutex_init(&fw_mutex); 2582 2583 /* register this driver with the USB subsystem */ 2584 result = usb_register(&at76_driver); 2585 if (result < 0) 2586 printk(KERN_ERR DRIVER_NAME 2587 ": usb_register failed (status %d)\n", result); 2588 2589 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx); 2590 return result; 2591 } 2592 2593 static void __exit at76_mod_exit(void) 2594 { 2595 int i; 2596 2597 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n"); 2598 usb_deregister(&at76_driver); 2599 for (i = 0; i < ARRAY_SIZE(firmwares); i++) 2600 release_firmware(firmwares[i].fw); 2601 led_trigger_unregister_simple(ledtrig_tx); 2602 } 2603 2604 module_param_named(debug, at76_debug, uint, 0600); 2605 MODULE_PARM_DESC(debug, "Debugging level"); 2606 2607 module_init(at76_mod_init); 2608 module_exit(at76_mod_exit); 2609 2610 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>"); 2611 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>"); 2612 MODULE_AUTHOR("Alex <alex@foogod.com>"); 2613 MODULE_AUTHOR("Nick Jones"); 2614 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>"); 2615 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>"); 2616 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>"); 2617 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>"); 2618 MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>"); 2619 MODULE_DESCRIPTION(DRIVER_DESC); 2620 MODULE_LICENSE("GPL"); 2621