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...) \ 88 do { \ 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...) \ 94 do { \ 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) 100 101 static uint at76_debug = DBG_DEFAULTS; 102 103 /* Protect against concurrent firmware loading and parsing */ 104 static DEFINE_MUTEX(fw_mutex); 105 106 static 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 }; 117 MODULE_FIRMWARE("atmel_at76c503-i3861.bin"); 118 MODULE_FIRMWARE("atmel_at76c503-i3863.bin"); 119 MODULE_FIRMWARE("atmel_at76c503-rfmd.bin"); 120 MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin"); 121 MODULE_FIRMWARE("atmel_at76c505-rfmd.bin"); 122 MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin"); 123 MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin"); 124 MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin"); 125 126 #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops) 127 128 static 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 }; 263 264 MODULE_DEVICE_TABLE(usb, dev_table); 265 266 /* Supported rates of this hardware, bit 7 marks basic rates */ 267 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 }; 268 269 static 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 295 296 struct dfu_status { 297 unsigned char status; 298 unsigned char poll_timeout[3]; 299 unsigned char state; 300 unsigned char string; 301 } __packed; 302 303 static inline int at76_is_intersil(enum board_type board) 304 { 305 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863); 306 } 307 308 static inline int at76_is_503rfmd(enum board_type board) 309 { 310 return (board == BOARD_503 || board == BOARD_503_ACC); 311 } 312 313 static 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 */ 319 static 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 } 327 328 static 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(*status), 336 USB_CTRL_GET_TIMEOUT); 337 return ret; 338 } 339 340 static 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 */ 351 static 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. */ 360 static 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; 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(*dfu_stat_buf), 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)); 502 503 exit: 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 */ 515 static int tx_activity; 516 static void at76_ledtrig_tx_timerfunc(struct timer_list *unused); 517 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc); 518 DEFINE_LED_TRIGGER(ledtrig_tx); 519 520 static 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 } 531 532 static 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 } 538 539 static 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 } 550 551 static 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 */ 576 static 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 } 584 585 static 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 */ 595 static 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) */ 607 static 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 } 635 636 exit: 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 } 644 645 static 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 } 667 668 static 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 */ 683 static 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 704 static 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 } 719 720 static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf, 721 int buf_size) 722 { 723 int ret; 724 size_t total_size; 725 struct at76_command *cmd_buf; 726 727 total_size = struct_size(cmd_buf, data, buf_size); 728 cmd_buf = kmalloc(total_size, GFP_KERNEL); 729 if (!cmd_buf) 730 return -ENOMEM; 731 732 cmd_buf->cmd = cmd; 733 cmd_buf->reserved = 0; 734 cmd_buf->size = cpu_to_le16(buf_size); 735 memcpy(cmd_buf->data, buf, buf_size); 736 737 at76_dbg_dump(DBG_CMD, cmd_buf, total_size, 738 "issuing command %s (0x%02x)", 739 at76_get_cmd_string(cmd), cmd); 740 741 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, 742 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, 743 0, 0, cmd_buf, total_size, USB_CTRL_GET_TIMEOUT); 744 kfree(cmd_buf); 745 return ret; 746 } 747 748 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c 749 static 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 */ 767 static 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 } 801 802 static 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 */ 824 static 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) */ 846 static 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 } 862 863 static 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 } 879 880 static 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 } 896 897 static 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 } 912 913 static 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 } 929 930 static 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(*m), GFP_KERNEL); 935 936 if (!m) 937 return; 938 939 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m, sizeof(*m)); 940 if (ret < 0) { 941 wiphy_err(priv->hw->wiphy, 942 "at76_get_mib (MAC_ADDR) failed: %d\n", ret); 943 goto exit; 944 } 945 946 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x", 947 wiphy_name(priv->hw->wiphy), 948 m->mac_addr, m->res[0], m->res[1]); 949 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++) 950 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, " 951 "status %d", wiphy_name(priv->hw->wiphy), i, 952 m->group_addr[i], m->group_addr_status[i]); 953 exit: 954 kfree(m); 955 } 956 957 static void at76_dump_mib_mac_wep(struct at76_priv *priv) 958 { 959 int i; 960 int ret; 961 int key_len; 962 struct mib_mac_wep *m = kmalloc(sizeof(*m), GFP_KERNEL); 963 964 if (!m) 965 return; 966 967 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m, sizeof(*m)); 968 if (ret < 0) { 969 wiphy_err(priv->hw->wiphy, 970 "at76_get_mib (MAC_WEP) failed: %d\n", ret); 971 goto exit; 972 } 973 974 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u " 975 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u " 976 "encr_level %u key %d", wiphy_name(priv->hw->wiphy), 977 m->privacy_invoked, m->wep_default_key_id, 978 m->wep_key_mapping_len, m->exclude_unencrypted, 979 le32_to_cpu(m->wep_icv_error_count), 980 le32_to_cpu(m->wep_excluded_count), m->encryption_level, 981 m->wep_default_key_id); 982 983 key_len = (m->encryption_level == 1) ? 984 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN; 985 986 for (i = 0; i < WEP_KEYS; i++) 987 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD", 988 wiphy_name(priv->hw->wiphy), i, 989 key_len, m->wep_default_keyvalue[i]); 990 exit: 991 kfree(m); 992 } 993 994 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv) 995 { 996 int ret; 997 struct mib_mac_mgmt *m = kmalloc(sizeof(*m), GFP_KERNEL); 998 999 if (!m) 1000 return; 1001 1002 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m, sizeof(*m)); 1003 if (ret < 0) { 1004 wiphy_err(priv->hw->wiphy, 1005 "at76_get_mib (MAC_MGMT) failed: %d\n", ret); 1006 goto exit; 1007 } 1008 1009 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration " 1010 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d " 1011 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d " 1012 "current_bssid %pM current_essid %*phD current_bss_type %d " 1013 "pm_mode %d ibss_change %d res %d " 1014 "multi_domain_capability_implemented %d " 1015 "international_roaming %d country_string %.3s", 1016 wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period), 1017 le16_to_cpu(m->CFP_max_duration), 1018 le16_to_cpu(m->medium_occupancy_limit), 1019 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window), 1020 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period, 1021 m->CFP_period, m->current_bssid, 1022 IW_ESSID_MAX_SIZE, m->current_essid, 1023 m->current_bss_type, m->power_mgmt_mode, m->ibss_change, 1024 m->res, m->multi_domain_capability_implemented, 1025 m->multi_domain_capability_enabled, m->country_string); 1026 exit: 1027 kfree(m); 1028 } 1029 1030 static void at76_dump_mib_mac(struct at76_priv *priv) 1031 { 1032 int ret; 1033 struct mib_mac *m = kmalloc(sizeof(*m), GFP_KERNEL); 1034 1035 if (!m) 1036 return; 1037 1038 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(*m)); 1039 if (ret < 0) { 1040 wiphy_err(priv->hw->wiphy, 1041 "at76_get_mib (MAC) failed: %d\n", ret); 1042 goto exit; 1043 } 1044 1045 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d " 1046 "max_rx_lifetime %d frag_threshold %d rts_threshold %d " 1047 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d " 1048 "scan_type %d scan_channel %d probe_delay %u " 1049 "min_channel_time %d max_channel_time %d listen_int %d " 1050 "desired_ssid %*phD desired_bssid %pM desired_bsstype %d", 1051 wiphy_name(priv->hw->wiphy), 1052 le32_to_cpu(m->max_tx_msdu_lifetime), 1053 le32_to_cpu(m->max_rx_lifetime), 1054 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold), 1055 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax), 1056 m->short_retry_time, m->long_retry_time, m->scan_type, 1057 m->scan_channel, le16_to_cpu(m->probe_delay), 1058 le16_to_cpu(m->min_channel_time), 1059 le16_to_cpu(m->max_channel_time), 1060 le16_to_cpu(m->listen_interval), 1061 IW_ESSID_MAX_SIZE, m->desired_ssid, 1062 m->desired_bssid, m->desired_bsstype); 1063 exit: 1064 kfree(m); 1065 } 1066 1067 static void at76_dump_mib_phy(struct at76_priv *priv) 1068 { 1069 int ret; 1070 struct mib_phy *m = kmalloc(sizeof(*m), GFP_KERNEL); 1071 1072 if (!m) 1073 return; 1074 1075 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(*m)); 1076 if (ret < 0) { 1077 wiphy_err(priv->hw->wiphy, 1078 "at76_get_mib (PHY) failed: %d\n", ret); 1079 goto exit; 1080 } 1081 1082 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d " 1083 "sifs_time %d preamble_length %d plcp_header_length %d " 1084 "mpdu_max_length %d cca_mode_supported %d operation_rate_set " 1085 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d " 1086 "phy_type %d current_reg_domain %d", 1087 wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold), 1088 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time), 1089 le16_to_cpu(m->preamble_length), 1090 le16_to_cpu(m->plcp_header_length), 1091 le16_to_cpu(m->mpdu_max_length), 1092 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0], 1093 m->operation_rate_set[1], m->operation_rate_set[2], 1094 m->operation_rate_set[3], m->channel_id, m->current_cca_mode, 1095 m->phy_type, m->current_reg_domain); 1096 exit: 1097 kfree(m); 1098 } 1099 1100 static void at76_dump_mib_local(struct at76_priv *priv) 1101 { 1102 int ret; 1103 struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL); 1104 1105 if (!m) 1106 return; 1107 1108 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m)); 1109 if (ret < 0) { 1110 wiphy_err(priv->hw->wiphy, 1111 "at76_get_mib (LOCAL) failed: %d\n", ret); 1112 goto exit; 1113 } 1114 1115 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d " 1116 "txautorate_fallback %d ssid_size %d promiscuous_mode %d " 1117 "preamble_type %d", wiphy_name(priv->hw->wiphy), 1118 m->beacon_enable, 1119 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode, 1120 m->preamble_type); 1121 exit: 1122 kfree(m); 1123 } 1124 1125 static void at76_dump_mib_mdomain(struct at76_priv *priv) 1126 { 1127 int ret; 1128 struct mib_mdomain *m = kmalloc(sizeof(*m), GFP_KERNEL); 1129 1130 if (!m) 1131 return; 1132 1133 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m, sizeof(*m)); 1134 if (ret < 0) { 1135 wiphy_err(priv->hw->wiphy, 1136 "at76_get_mib (MDOMAIN) failed: %d\n", ret); 1137 goto exit; 1138 } 1139 1140 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD", 1141 wiphy_name(priv->hw->wiphy), 1142 (int)sizeof(m->channel_list), m->channel_list); 1143 1144 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD", 1145 wiphy_name(priv->hw->wiphy), 1146 (int)sizeof(m->tx_powerlevel), m->tx_powerlevel); 1147 exit: 1148 kfree(m); 1149 } 1150 1151 /* Enable monitor mode */ 1152 static int at76_start_monitor(struct at76_priv *priv) 1153 { 1154 struct at76_req_scan scan; 1155 int ret; 1156 1157 memset(&scan, 0, sizeof(struct at76_req_scan)); 1158 eth_broadcast_addr(scan.bssid); 1159 1160 scan.channel = priv->channel; 1161 scan.scan_type = SCAN_TYPE_PASSIVE; 1162 scan.international_scan = 0; 1163 scan.min_channel_time = cpu_to_le16(priv->scan_min_time); 1164 scan.max_channel_time = cpu_to_le16(priv->scan_max_time); 1165 scan.probe_delay = cpu_to_le16(0); 1166 1167 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); 1168 if (ret >= 0) 1169 ret = at76_get_cmd_status(priv->udev, CMD_SCAN); 1170 1171 return ret; 1172 } 1173 1174 /* Calculate padding from txbuf->wlength (which excludes the USB TX header), 1175 likely to compensate a flaw in the AT76C503A USB part ... */ 1176 static inline int at76_calc_padding(int wlen) 1177 { 1178 /* add the USB TX header */ 1179 wlen += AT76_TX_HDRLEN; 1180 1181 wlen = wlen % 64; 1182 1183 if (wlen < 50) 1184 return 50 - wlen; 1185 1186 if (wlen >= 61) 1187 return 64 + 50 - wlen; 1188 1189 return 0; 1190 } 1191 1192 static void at76_rx_callback(struct urb *urb) 1193 { 1194 struct at76_priv *priv = urb->context; 1195 1196 tasklet_schedule(&priv->rx_tasklet); 1197 } 1198 1199 static int at76_submit_rx_urb(struct at76_priv *priv) 1200 { 1201 int ret; 1202 int size; 1203 struct sk_buff *skb = priv->rx_skb; 1204 1205 if (!priv->rx_urb) { 1206 wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n", 1207 __func__); 1208 return -EFAULT; 1209 } 1210 1211 if (!skb) { 1212 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer)); 1213 if (!skb) { 1214 wiphy_err(priv->hw->wiphy, 1215 "cannot allocate rx skbuff\n"); 1216 ret = -ENOMEM; 1217 goto exit; 1218 } 1219 priv->rx_skb = skb; 1220 } else { 1221 skb_push(skb, skb_headroom(skb)); 1222 skb_trim(skb, 0); 1223 } 1224 1225 size = skb_tailroom(skb); 1226 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe, 1227 skb_put(skb, size), size, at76_rx_callback, priv); 1228 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC); 1229 if (ret < 0) { 1230 if (ret == -ENODEV) 1231 at76_dbg(DBG_DEVSTART, 1232 "usb_submit_urb returned -ENODEV"); 1233 else 1234 wiphy_err(priv->hw->wiphy, 1235 "rx, usb_submit_urb failed: %d\n", ret); 1236 } 1237 1238 exit: 1239 if (ret < 0 && ret != -ENODEV) 1240 wiphy_err(priv->hw->wiphy, 1241 "cannot submit rx urb - please unload the driver and/or power cycle the device\n"); 1242 1243 return ret; 1244 } 1245 1246 /* Download external firmware */ 1247 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe) 1248 { 1249 int ret; 1250 int op_mode; 1251 int blockno = 0; 1252 int bsize; 1253 u8 *block; 1254 u8 *buf = fwe->extfw; 1255 int size = fwe->extfw_size; 1256 1257 if (!buf || !size) 1258 return -ENOENT; 1259 1260 op_mode = at76_get_op_mode(udev); 1261 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); 1262 1263 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { 1264 dev_err(&udev->dev, "unexpected opmode %d\n", op_mode); 1265 return -EINVAL; 1266 } 1267 1268 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); 1269 if (!block) 1270 return -ENOMEM; 1271 1272 at76_dbg(DBG_DEVSTART, "downloading external firmware"); 1273 1274 /* for fw >= 0.100, the device needs an extra empty block */ 1275 do { 1276 bsize = min_t(int, size, FW_BLOCK_SIZE); 1277 memcpy(block, buf, bsize); 1278 at76_dbg(DBG_DEVSTART, 1279 "ext fw, size left = %5d, bsize = %4d, blockno = %2d", 1280 size, bsize, blockno); 1281 ret = at76_load_ext_fw_block(udev, blockno, block, bsize); 1282 if (ret != bsize) { 1283 dev_err(&udev->dev, 1284 "loading %dth firmware block failed: %d\n", 1285 blockno, ret); 1286 ret = -EIO; 1287 goto exit; 1288 } 1289 buf += bsize; 1290 size -= bsize; 1291 blockno++; 1292 } while (bsize > 0); 1293 1294 if (at76_is_505a(fwe->board_type)) { 1295 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a"); 1296 schedule_timeout_interruptible(HZ / 5 + 1); 1297 } 1298 1299 exit: 1300 kfree(block); 1301 if (ret < 0) 1302 dev_err(&udev->dev, 1303 "downloading external firmware failed: %d\n", ret); 1304 return ret; 1305 } 1306 1307 /* Download internal firmware */ 1308 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe) 1309 { 1310 int ret; 1311 int need_remap = !at76_is_505a(fwe->board_type); 1312 1313 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size, 1314 need_remap ? 0 : 2 * HZ); 1315 1316 if (ret < 0) { 1317 dev_err(&udev->dev, 1318 "downloading internal fw failed with %d\n", ret); 1319 goto exit; 1320 } 1321 1322 at76_dbg(DBG_DEVSTART, "sending REMAP"); 1323 1324 /* no REMAP for 505A (see SF driver) */ 1325 if (need_remap) { 1326 ret = at76_remap(udev); 1327 if (ret < 0) { 1328 dev_err(&udev->dev, 1329 "sending REMAP failed with %d\n", ret); 1330 goto exit; 1331 } 1332 } 1333 1334 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds"); 1335 schedule_timeout_interruptible(2 * HZ + 1); 1336 usb_reset_device(udev); 1337 1338 exit: 1339 return ret; 1340 } 1341 1342 static int at76_startup_device(struct at76_priv *priv) 1343 { 1344 struct at76_card_config *ccfg = &priv->card_config; 1345 int ret; 1346 1347 at76_dbg(DBG_PARAMS, 1348 "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d " 1349 "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size, 1350 priv->essid, IW_ESSID_MAX_SIZE, priv->essid, 1351 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra", 1352 priv->channel, priv->wep_enabled ? "enabled" : "disabled", 1353 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]); 1354 at76_dbg(DBG_PARAMS, 1355 "%s param: preamble %s rts %d retry %d frag %d " 1356 "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy), 1357 preambles[priv->preamble_type], priv->rts_threshold, 1358 priv->short_retry_limit, priv->frag_threshold, 1359 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate == 1360 TX_RATE_2MBIT ? "2MBit" : priv->txrate == 1361 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate == 1362 TX_RATE_11MBIT ? "11MBit" : priv->txrate == 1363 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode); 1364 at76_dbg(DBG_PARAMS, 1365 "%s param: pm_mode %d pm_period %d auth_mode %s " 1366 "scan_times %d %d scan_mode %s", 1367 wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period, 1368 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret", 1369 priv->scan_min_time, priv->scan_max_time, 1370 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive"); 1371 1372 memset(ccfg, 0, sizeof(*ccfg)); 1373 ccfg->promiscuous_mode = 0; 1374 ccfg->short_retry_limit = priv->short_retry_limit; 1375 1376 if (priv->wep_enabled) { 1377 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN) 1378 ccfg->encryption_type = 2; 1379 else 1380 ccfg->encryption_type = 1; 1381 1382 /* jal: always exclude unencrypted if WEP is active */ 1383 ccfg->exclude_unencrypted = 1; 1384 } else { 1385 ccfg->exclude_unencrypted = 0; 1386 ccfg->encryption_type = 0; 1387 } 1388 1389 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold); 1390 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold); 1391 1392 memcpy(ccfg->basic_rate_set, hw_rates, 4); 1393 /* jal: really needed, we do a set_mib for autorate later ??? */ 1394 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0); 1395 ccfg->channel = priv->channel; 1396 ccfg->privacy_invoked = priv->wep_enabled; 1397 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE); 1398 ccfg->ssid_len = priv->essid_size; 1399 1400 ccfg->wep_default_key_id = priv->wep_key_id; 1401 memcpy(ccfg->wep_default_key_value, priv->wep_keys, 1402 sizeof(priv->wep_keys)); 1403 1404 ccfg->short_preamble = priv->preamble_type; 1405 ccfg->beacon_period = cpu_to_le16(priv->beacon_period); 1406 1407 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config, 1408 sizeof(*ccfg)); 1409 if (ret < 0) { 1410 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n", 1411 ret); 1412 return ret; 1413 } 1414 1415 at76_wait_completion(priv, CMD_STARTUP); 1416 1417 /* remove BSSID from previous run */ 1418 eth_zero_addr(priv->bssid); 1419 1420 priv->scanning = false; 1421 1422 if (at76_set_radio(priv, 1) == 1) 1423 at76_wait_completion(priv, CMD_RADIO_ON); 1424 1425 ret = at76_set_preamble(priv, priv->preamble_type); 1426 if (ret < 0) 1427 return ret; 1428 1429 ret = at76_set_frag(priv, priv->frag_threshold); 1430 if (ret < 0) 1431 return ret; 1432 1433 ret = at76_set_rts(priv, priv->rts_threshold); 1434 if (ret < 0) 1435 return ret; 1436 1437 ret = at76_set_autorate_fallback(priv, 1438 priv->txrate == TX_RATE_AUTO ? 1 : 0); 1439 if (ret < 0) 1440 return ret; 1441 1442 ret = at76_set_pm_mode(priv); 1443 if (ret < 0) 1444 return ret; 1445 1446 if (at76_debug & DBG_MIB) { 1447 at76_dump_mib_mac(priv); 1448 at76_dump_mib_mac_addr(priv); 1449 at76_dump_mib_mac_mgmt(priv); 1450 at76_dump_mib_mac_wep(priv); 1451 at76_dump_mib_mdomain(priv); 1452 at76_dump_mib_phy(priv); 1453 at76_dump_mib_local(priv); 1454 } 1455 1456 return 0; 1457 } 1458 1459 /* Enable or disable promiscuous mode */ 1460 static void at76_work_set_promisc(struct work_struct *work) 1461 { 1462 struct at76_priv *priv = container_of(work, struct at76_priv, 1463 work_set_promisc); 1464 int ret = 0; 1465 1466 if (priv->device_unplugged) 1467 return; 1468 1469 mutex_lock(&priv->mtx); 1470 1471 priv->mib_buf.type = MIB_LOCAL; 1472 priv->mib_buf.size = 1; 1473 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode); 1474 priv->mib_buf.data.byte = priv->promisc ? 1 : 0; 1475 1476 ret = at76_set_mib(priv, &priv->mib_buf); 1477 if (ret < 0) 1478 wiphy_err(priv->hw->wiphy, 1479 "set_mib (promiscuous_mode) failed: %d\n", ret); 1480 1481 mutex_unlock(&priv->mtx); 1482 } 1483 1484 /* Submit Rx urb back to the device */ 1485 static void at76_work_submit_rx(struct work_struct *work) 1486 { 1487 struct at76_priv *priv = container_of(work, struct at76_priv, 1488 work_submit_rx); 1489 1490 mutex_lock(&priv->mtx); 1491 at76_submit_rx_urb(priv); 1492 mutex_unlock(&priv->mtx); 1493 } 1494 1495 /* This is a workaround to make scan working: 1496 * currently mac80211 does not process frames with no frequency 1497 * information. 1498 * However during scan the HW performs a sweep by itself, and we 1499 * are unable to know where the radio is actually tuned. 1500 * This function tries to do its best to guess this information.. 1501 * During scan, If the current frame is a beacon or a probe response, 1502 * the channel information is extracted from it. 1503 * When not scanning, for other frames, or if it happens that for 1504 * whatever reason we fail to parse beacons and probe responses, this 1505 * function returns the priv->channel information, that should be correct 1506 * at least when we are not scanning. 1507 */ 1508 static inline int at76_guess_freq(struct at76_priv *priv) 1509 { 1510 size_t el_off; 1511 const u8 *el; 1512 int channel = priv->channel; 1513 int len = priv->rx_skb->len; 1514 struct ieee80211_hdr *hdr = (void *)priv->rx_skb->data; 1515 1516 if (!priv->scanning) 1517 goto exit; 1518 1519 if (len < 24) 1520 goto exit; 1521 1522 if (ieee80211_is_probe_resp(hdr->frame_control)) { 1523 el_off = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); 1524 el = ((struct ieee80211_mgmt *)hdr)->u.probe_resp.variable; 1525 } else if (ieee80211_is_beacon(hdr->frame_control)) { 1526 el_off = offsetof(struct ieee80211_mgmt, u.beacon.variable); 1527 el = ((struct ieee80211_mgmt *)hdr)->u.beacon.variable; 1528 } else { 1529 goto exit; 1530 } 1531 len -= el_off; 1532 1533 el = cfg80211_find_ie(WLAN_EID_DS_PARAMS, el, len); 1534 if (el && el[1] > 0) 1535 channel = el[2]; 1536 1537 exit: 1538 return ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ); 1539 } 1540 1541 static void at76_rx_tasklet(struct tasklet_struct *t) 1542 { 1543 struct at76_priv *priv = from_tasklet(priv, t, rx_tasklet); 1544 struct urb *urb = priv->rx_urb; 1545 struct at76_rx_buffer *buf; 1546 struct ieee80211_rx_status rx_status = { 0 }; 1547 1548 if (priv->device_unplugged) { 1549 at76_dbg(DBG_DEVSTART, "device unplugged"); 1550 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status); 1551 return; 1552 } 1553 1554 if (!priv->rx_skb || !priv->rx_skb->data) 1555 return; 1556 1557 buf = (struct at76_rx_buffer *)priv->rx_skb->data; 1558 1559 if (urb->status != 0) { 1560 if (urb->status != -ENOENT && urb->status != -ECONNRESET) 1561 at76_dbg(DBG_URB, 1562 "%s %s: - nonzero Rx bulk status received: %d", 1563 __func__, wiphy_name(priv->hw->wiphy), 1564 urb->status); 1565 return; 1566 } 1567 1568 at76_dbg(DBG_RX_ATMEL_HDR, 1569 "%s: rx frame: rate %d rssi %d noise %d link %d", 1570 wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi, 1571 buf->noise_level, buf->link_quality); 1572 1573 skb_pull(priv->rx_skb, AT76_RX_HDRLEN); 1574 skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength)); 1575 at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data, 1576 priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len); 1577 1578 rx_status.signal = buf->rssi; 1579 rx_status.flag |= RX_FLAG_DECRYPTED; 1580 rx_status.flag |= RX_FLAG_IV_STRIPPED; 1581 rx_status.band = NL80211_BAND_2GHZ; 1582 rx_status.freq = at76_guess_freq(priv); 1583 1584 at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d", 1585 priv->rx_skb->len, priv->rx_skb->data_len); 1586 memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status)); 1587 ieee80211_rx_irqsafe(priv->hw, priv->rx_skb); 1588 1589 /* Use a new skb for the next receive */ 1590 priv->rx_skb = NULL; 1591 1592 at76_submit_rx_urb(priv); 1593 } 1594 1595 /* Load firmware into kernel memory and parse it */ 1596 static struct fwentry *at76_load_firmware(struct usb_device *udev, 1597 enum board_type board_type) 1598 { 1599 int ret; 1600 char *str; 1601 struct at76_fw_header *fwh; 1602 struct fwentry *fwe = &firmwares[board_type]; 1603 1604 mutex_lock(&fw_mutex); 1605 1606 if (fwe->loaded) { 1607 at76_dbg(DBG_FW, "re-using previously loaded fw"); 1608 goto exit; 1609 } 1610 1611 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname); 1612 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev); 1613 if (ret < 0) { 1614 dev_err(&udev->dev, "firmware %s not found!\n", 1615 fwe->fwname); 1616 dev_err(&udev->dev, 1617 "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n"); 1618 goto exit; 1619 } 1620 1621 at76_dbg(DBG_FW, "got it."); 1622 fwh = (struct at76_fw_header *)(fwe->fw->data); 1623 1624 if (fwe->fw->size <= sizeof(*fwh)) { 1625 dev_err(&udev->dev, 1626 "firmware is too short (0x%zx)\n", fwe->fw->size); 1627 goto exit; 1628 } 1629 1630 /* CRC currently not checked */ 1631 fwe->board_type = le32_to_cpu(fwh->board_type); 1632 if (fwe->board_type != board_type) { 1633 dev_err(&udev->dev, 1634 "board type mismatch, requested %u, got %u\n", 1635 board_type, fwe->board_type); 1636 goto exit; 1637 } 1638 1639 fwe->fw_version.major = fwh->major; 1640 fwe->fw_version.minor = fwh->minor; 1641 fwe->fw_version.patch = fwh->patch; 1642 fwe->fw_version.build = fwh->build; 1643 1644 str = (char *)fwh + le32_to_cpu(fwh->str_offset); 1645 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset); 1646 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len); 1647 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset); 1648 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len); 1649 1650 fwe->loaded = 1; 1651 1652 dev_printk(KERN_DEBUG, &udev->dev, 1653 "using firmware %s (version %d.%d.%d-%d)\n", 1654 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build); 1655 1656 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type, 1657 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len), 1658 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len)); 1659 at76_dbg(DBG_DEVSTART, "firmware id %s", str); 1660 1661 exit: 1662 mutex_unlock(&fw_mutex); 1663 1664 if (fwe->loaded) 1665 return fwe; 1666 else 1667 return NULL; 1668 } 1669 1670 static int at76_join(struct at76_priv *priv) 1671 { 1672 struct at76_req_join join; 1673 int ret; 1674 1675 memset(&join, 0, sizeof(struct at76_req_join)); 1676 memcpy(join.essid, priv->essid, priv->essid_size); 1677 join.essid_size = priv->essid_size; 1678 memcpy(join.bssid, priv->bssid, ETH_ALEN); 1679 join.bss_type = INFRASTRUCTURE_MODE; 1680 join.channel = priv->channel; 1681 join.timeout = cpu_to_le16(2000); 1682 1683 at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__); 1684 ret = at76_set_card_command(priv->udev, CMD_JOIN, &join, 1685 sizeof(struct at76_req_join)); 1686 1687 if (ret < 0) { 1688 wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n", 1689 ret); 1690 return 0; 1691 } 1692 1693 ret = at76_wait_completion(priv, CMD_JOIN); 1694 at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret); 1695 if (ret != CMD_STATUS_COMPLETE) { 1696 wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n", 1697 ret); 1698 return 0; 1699 } 1700 1701 at76_set_pm_mode(priv); 1702 1703 return 0; 1704 } 1705 1706 static void at76_work_join_bssid(struct work_struct *work) 1707 { 1708 struct at76_priv *priv = container_of(work, struct at76_priv, 1709 work_join_bssid); 1710 1711 if (priv->device_unplugged) 1712 return; 1713 1714 mutex_lock(&priv->mtx); 1715 1716 if (is_valid_ether_addr(priv->bssid)) 1717 at76_join(priv); 1718 1719 mutex_unlock(&priv->mtx); 1720 } 1721 1722 static void at76_mac80211_tx_callback(struct urb *urb) 1723 { 1724 struct at76_priv *priv = urb->context; 1725 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 1726 1727 at76_dbg(DBG_MAC80211, "%s()", __func__); 1728 1729 switch (urb->status) { 1730 case 0: 1731 /* success */ 1732 info->flags |= IEEE80211_TX_STAT_ACK; 1733 break; 1734 case -ENOENT: 1735 case -ECONNRESET: 1736 /* fail, urb has been unlinked */ 1737 /* FIXME: add error message */ 1738 break; 1739 default: 1740 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d", 1741 __func__, urb->status); 1742 break; 1743 } 1744 1745 memset(&info->status, 0, sizeof(info->status)); 1746 1747 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 1748 1749 priv->tx_skb = NULL; 1750 1751 ieee80211_wake_queues(priv->hw); 1752 } 1753 1754 static void at76_mac80211_tx(struct ieee80211_hw *hw, 1755 struct ieee80211_tx_control *control, 1756 struct sk_buff *skb) 1757 { 1758 struct at76_priv *priv = hw->priv; 1759 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer; 1760 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 1761 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1762 int padding, submit_len, ret; 1763 1764 at76_dbg(DBG_MAC80211, "%s()", __func__); 1765 1766 if (priv->tx_urb->status == -EINPROGRESS) { 1767 wiphy_err(priv->hw->wiphy, 1768 "%s called while tx urb is pending\n", __func__); 1769 dev_kfree_skb_any(skb); 1770 return; 1771 } 1772 1773 /* The following code lines are important when the device is going to 1774 * authenticate with a new bssid. The driver must send CMD_JOIN before 1775 * an authentication frame is transmitted. For this to succeed, the 1776 * correct bssid of the AP must be known. As mac80211 does not inform 1777 * drivers about the bssid prior to the authentication process the 1778 * following workaround is necessary. If the TX frame is an 1779 * authentication frame extract the bssid and send the CMD_JOIN. */ 1780 if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) { 1781 if (!ether_addr_equal_64bits(priv->bssid, mgmt->bssid)) { 1782 memcpy(priv->bssid, mgmt->bssid, ETH_ALEN); 1783 ieee80211_queue_work(hw, &priv->work_join_bssid); 1784 dev_kfree_skb_any(skb); 1785 return; 1786 } 1787 } 1788 1789 ieee80211_stop_queues(hw); 1790 1791 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */ 1792 1793 WARN_ON(priv->tx_skb != NULL); 1794 1795 priv->tx_skb = skb; 1796 padding = at76_calc_padding(skb->len); 1797 submit_len = AT76_TX_HDRLEN + skb->len + padding; 1798 1799 /* setup 'Atmel' header */ 1800 memset(tx_buffer, 0, sizeof(*tx_buffer)); 1801 tx_buffer->padding = padding; 1802 tx_buffer->wlength = cpu_to_le16(skb->len); 1803 tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value; 1804 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved)); 1805 memcpy(tx_buffer->packet, skb->data, skb->len); 1806 1807 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr", 1808 wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength), 1809 tx_buffer->padding, tx_buffer->tx_rate); 1810 1811 /* send stuff */ 1812 at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len, 1813 "%s(): tx_buffer %d bytes:", __func__, submit_len); 1814 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer, 1815 submit_len, at76_mac80211_tx_callback, priv); 1816 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC); 1817 if (ret) { 1818 wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret); 1819 if (ret == -EINVAL) 1820 wiphy_err(priv->hw->wiphy, 1821 "-EINVAL: tx urb %p hcpriv %p complete %p\n", 1822 priv->tx_urb, 1823 priv->tx_urb->hcpriv, priv->tx_urb->complete); 1824 } 1825 } 1826 1827 static int at76_mac80211_start(struct ieee80211_hw *hw) 1828 { 1829 struct at76_priv *priv = hw->priv; 1830 int ret; 1831 1832 at76_dbg(DBG_MAC80211, "%s()", __func__); 1833 1834 mutex_lock(&priv->mtx); 1835 1836 ret = at76_submit_rx_urb(priv); 1837 if (ret < 0) { 1838 wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n", 1839 ret); 1840 goto error; 1841 } 1842 1843 at76_startup_device(priv); 1844 1845 at76_start_monitor(priv); 1846 1847 error: 1848 mutex_unlock(&priv->mtx); 1849 1850 return 0; 1851 } 1852 1853 static void at76_mac80211_stop(struct ieee80211_hw *hw, bool suspend) 1854 { 1855 struct at76_priv *priv = hw->priv; 1856 1857 at76_dbg(DBG_MAC80211, "%s()", __func__); 1858 1859 cancel_delayed_work(&priv->dwork_hw_scan); 1860 cancel_work_sync(&priv->work_join_bssid); 1861 cancel_work_sync(&priv->work_set_promisc); 1862 1863 mutex_lock(&priv->mtx); 1864 1865 if (!priv->device_unplugged) { 1866 /* We are called by "ifconfig ethX down", not because the 1867 * device is not available anymore. */ 1868 at76_set_radio(priv, 0); 1869 1870 /* We unlink rx_urb because at76_open() re-submits it. 1871 * If unplugged, at76_delete_device() takes care of it. */ 1872 usb_kill_urb(priv->rx_urb); 1873 } 1874 1875 mutex_unlock(&priv->mtx); 1876 } 1877 1878 static int at76_add_interface(struct ieee80211_hw *hw, 1879 struct ieee80211_vif *vif) 1880 { 1881 struct at76_priv *priv = hw->priv; 1882 int ret = 0; 1883 1884 at76_dbg(DBG_MAC80211, "%s()", __func__); 1885 1886 mutex_lock(&priv->mtx); 1887 1888 switch (vif->type) { 1889 case NL80211_IFTYPE_STATION: 1890 priv->iw_mode = IW_MODE_INFRA; 1891 break; 1892 default: 1893 ret = -EOPNOTSUPP; 1894 goto exit; 1895 } 1896 1897 exit: 1898 mutex_unlock(&priv->mtx); 1899 1900 return ret; 1901 } 1902 1903 static void at76_remove_interface(struct ieee80211_hw *hw, 1904 struct ieee80211_vif *vif) 1905 { 1906 at76_dbg(DBG_MAC80211, "%s()", __func__); 1907 } 1908 1909 static void at76_dwork_hw_scan(struct work_struct *work) 1910 { 1911 struct at76_priv *priv = container_of(work, struct at76_priv, 1912 dwork_hw_scan.work); 1913 struct cfg80211_scan_info info = { 1914 .aborted = false, 1915 }; 1916 int ret; 1917 1918 if (priv->device_unplugged) 1919 return; 1920 1921 mutex_lock(&priv->mtx); 1922 1923 ret = at76_get_cmd_status(priv->udev, CMD_SCAN); 1924 at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret); 1925 1926 /* FIXME: add maximum time for scan to complete */ 1927 1928 if (ret != CMD_STATUS_COMPLETE) { 1929 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan, 1930 SCAN_POLL_INTERVAL); 1931 mutex_unlock(&priv->mtx); 1932 return; 1933 } 1934 1935 if (is_valid_ether_addr(priv->bssid)) 1936 at76_join(priv); 1937 1938 priv->scanning = false; 1939 1940 mutex_unlock(&priv->mtx); 1941 1942 ieee80211_scan_completed(priv->hw, &info); 1943 1944 ieee80211_wake_queues(priv->hw); 1945 } 1946 1947 static int at76_hw_scan(struct ieee80211_hw *hw, 1948 struct ieee80211_vif *vif, 1949 struct ieee80211_scan_request *hw_req) 1950 { 1951 struct cfg80211_scan_request *req = &hw_req->req; 1952 struct at76_priv *priv = hw->priv; 1953 struct at76_req_scan scan; 1954 u8 *ssid = NULL; 1955 int ret, len = 0; 1956 1957 at76_dbg(DBG_MAC80211, "%s():", __func__); 1958 1959 if (priv->device_unplugged) 1960 return 0; 1961 1962 mutex_lock(&priv->mtx); 1963 1964 ieee80211_stop_queues(hw); 1965 1966 memset(&scan, 0, sizeof(struct at76_req_scan)); 1967 eth_broadcast_addr(scan.bssid); 1968 1969 if (req->n_ssids) { 1970 scan.scan_type = SCAN_TYPE_ACTIVE; 1971 ssid = req->ssids[0].ssid; 1972 len = req->ssids[0].ssid_len; 1973 } else { 1974 scan.scan_type = SCAN_TYPE_PASSIVE; 1975 } 1976 1977 if (len) { 1978 memcpy(scan.essid, ssid, len); 1979 scan.essid_size = len; 1980 } 1981 1982 scan.min_channel_time = cpu_to_le16(priv->scan_min_time); 1983 scan.max_channel_time = cpu_to_le16(priv->scan_max_time); 1984 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000); 1985 scan.international_scan = 0; 1986 1987 at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__); 1988 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); 1989 1990 if (ret < 0) { 1991 wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret); 1992 goto exit; 1993 } 1994 1995 priv->scanning = true; 1996 ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan, 1997 SCAN_POLL_INTERVAL); 1998 1999 exit: 2000 mutex_unlock(&priv->mtx); 2001 2002 return 0; 2003 } 2004 2005 static int at76_config(struct ieee80211_hw *hw, u32 changed) 2006 { 2007 struct at76_priv *priv = hw->priv; 2008 2009 at76_dbg(DBG_MAC80211, "%s(): channel %d", 2010 __func__, hw->conf.chandef.chan->hw_value); 2011 at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:"); 2012 2013 mutex_lock(&priv->mtx); 2014 2015 priv->channel = hw->conf.chandef.chan->hw_value; 2016 2017 if (is_valid_ether_addr(priv->bssid)) 2018 at76_join(priv); 2019 else 2020 at76_start_monitor(priv); 2021 2022 mutex_unlock(&priv->mtx); 2023 2024 return 0; 2025 } 2026 2027 static void at76_bss_info_changed(struct ieee80211_hw *hw, 2028 struct ieee80211_vif *vif, 2029 struct ieee80211_bss_conf *conf, 2030 u64 changed) 2031 { 2032 struct at76_priv *priv = hw->priv; 2033 2034 at76_dbg(DBG_MAC80211, "%s():", __func__); 2035 2036 if (!(changed & BSS_CHANGED_BSSID)) 2037 return; 2038 2039 at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:"); 2040 2041 mutex_lock(&priv->mtx); 2042 2043 memcpy(priv->bssid, conf->bssid, ETH_ALEN); 2044 2045 if (is_valid_ether_addr(priv->bssid)) 2046 /* mac80211 is joining a bss */ 2047 at76_join(priv); 2048 2049 mutex_unlock(&priv->mtx); 2050 } 2051 2052 /* must be atomic */ 2053 static void at76_configure_filter(struct ieee80211_hw *hw, 2054 unsigned int changed_flags, 2055 unsigned int *total_flags, u64 multicast) 2056 { 2057 struct at76_priv *priv = hw->priv; 2058 int flags; 2059 2060 at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x " 2061 "total_flags=0x%08x", 2062 __func__, changed_flags, *total_flags); 2063 2064 flags = changed_flags & AT76_SUPPORTED_FILTERS; 2065 *total_flags = AT76_SUPPORTED_FILTERS; 2066 2067 /* Bail out after updating flags to prevent a WARN_ON in mac80211. */ 2068 if (priv->device_unplugged) 2069 return; 2070 2071 /* FIXME: access to priv->promisc should be protected with 2072 * priv->mtx, but it's impossible because this function needs to be 2073 * atomic */ 2074 2075 if (flags && !priv->promisc) { 2076 /* mac80211 wants us to enable promiscuous mode */ 2077 priv->promisc = 1; 2078 } else if (!flags && priv->promisc) { 2079 /* we need to disable promiscuous mode */ 2080 priv->promisc = 0; 2081 } else 2082 return; 2083 2084 ieee80211_queue_work(hw, &priv->work_set_promisc); 2085 } 2086 2087 static int at76_set_wep(struct at76_priv *priv) 2088 { 2089 int ret = 0; 2090 struct mib_mac_wep *mib_data = &priv->mib_buf.data.wep_mib; 2091 2092 priv->mib_buf.type = MIB_MAC_WEP; 2093 priv->mib_buf.size = sizeof(struct mib_mac_wep); 2094 priv->mib_buf.index = 0; 2095 2096 memset(mib_data, 0, sizeof(*mib_data)); 2097 2098 if (priv->wep_enabled) { 2099 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN) 2100 mib_data->encryption_level = 2; 2101 else 2102 mib_data->encryption_level = 1; 2103 2104 /* always exclude unencrypted if WEP is active */ 2105 mib_data->exclude_unencrypted = 1; 2106 } else { 2107 mib_data->exclude_unencrypted = 0; 2108 mib_data->encryption_level = 0; 2109 } 2110 2111 mib_data->privacy_invoked = priv->wep_enabled; 2112 mib_data->wep_default_key_id = priv->wep_key_id; 2113 memcpy(mib_data->wep_default_keyvalue, priv->wep_keys, 2114 sizeof(priv->wep_keys)); 2115 2116 ret = at76_set_mib(priv, &priv->mib_buf); 2117 2118 if (ret < 0) 2119 wiphy_err(priv->hw->wiphy, 2120 "set_mib (wep) failed: %d\n", ret); 2121 2122 return ret; 2123 } 2124 2125 static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 2126 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 2127 struct ieee80211_key_conf *key) 2128 { 2129 struct at76_priv *priv = hw->priv; 2130 2131 int i; 2132 2133 at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d " 2134 "key->keylen %d", 2135 __func__, cmd, key->cipher, key->keyidx, key->keylen); 2136 2137 if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) && 2138 (key->cipher != WLAN_CIPHER_SUITE_WEP104)) 2139 return -EOPNOTSUPP; 2140 2141 key->hw_key_idx = key->keyidx; 2142 2143 mutex_lock(&priv->mtx); 2144 2145 switch (cmd) { 2146 case SET_KEY: 2147 memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen); 2148 priv->wep_keys_len[key->keyidx] = key->keylen; 2149 2150 /* FIXME: find out how to do this properly */ 2151 priv->wep_key_id = key->keyidx; 2152 2153 break; 2154 case DISABLE_KEY: 2155 default: 2156 priv->wep_keys_len[key->keyidx] = 0; 2157 break; 2158 } 2159 2160 priv->wep_enabled = 0; 2161 2162 for (i = 0; i < WEP_KEYS; i++) { 2163 if (priv->wep_keys_len[i] != 0) 2164 priv->wep_enabled = 1; 2165 } 2166 2167 at76_set_wep(priv); 2168 2169 mutex_unlock(&priv->mtx); 2170 2171 return 0; 2172 } 2173 2174 static const struct ieee80211_ops at76_ops = { 2175 .add_chanctx = ieee80211_emulate_add_chanctx, 2176 .remove_chanctx = ieee80211_emulate_remove_chanctx, 2177 .change_chanctx = ieee80211_emulate_change_chanctx, 2178 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 2179 .tx = at76_mac80211_tx, 2180 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 2181 .add_interface = at76_add_interface, 2182 .remove_interface = at76_remove_interface, 2183 .config = at76_config, 2184 .bss_info_changed = at76_bss_info_changed, 2185 .configure_filter = at76_configure_filter, 2186 .start = at76_mac80211_start, 2187 .stop = at76_mac80211_stop, 2188 .hw_scan = at76_hw_scan, 2189 .set_key = at76_set_key, 2190 }; 2191 2192 /* Allocate network device and initialize private data */ 2193 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev) 2194 { 2195 struct ieee80211_hw *hw; 2196 struct at76_priv *priv; 2197 2198 hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops); 2199 if (!hw) { 2200 printk(KERN_ERR DRIVER_NAME ": could not register" 2201 " ieee80211_hw\n"); 2202 return NULL; 2203 } 2204 2205 priv = hw->priv; 2206 priv->hw = hw; 2207 2208 priv->udev = udev; 2209 2210 mutex_init(&priv->mtx); 2211 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc); 2212 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx); 2213 INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid); 2214 INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan); 2215 2216 tasklet_setup(&priv->rx_tasklet, at76_rx_tasklet); 2217 2218 priv->pm_mode = AT76_PM_OFF; 2219 priv->pm_period = 0; 2220 2221 /* unit us */ 2222 2223 return priv; 2224 } 2225 2226 static int at76_alloc_urbs(struct at76_priv *priv, 2227 struct usb_interface *interface) 2228 { 2229 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out; 2230 int i; 2231 int buffer_size; 2232 struct usb_host_interface *iface_desc; 2233 2234 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); 2235 2236 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__, 2237 interface->cur_altsetting->desc.bNumEndpoints); 2238 2239 ep_in = NULL; 2240 ep_out = NULL; 2241 iface_desc = interface->cur_altsetting; 2242 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { 2243 endpoint = &iface_desc->endpoint[i].desc; 2244 2245 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x", 2246 __func__, i, endpoint->bEndpointAddress, 2247 endpoint->bmAttributes); 2248 2249 if (!ep_in && usb_endpoint_is_bulk_in(endpoint)) 2250 ep_in = endpoint; 2251 2252 if (!ep_out && usb_endpoint_is_bulk_out(endpoint)) 2253 ep_out = endpoint; 2254 } 2255 2256 if (!ep_in || !ep_out) { 2257 dev_err(&interface->dev, "bulk endpoints missing\n"); 2258 return -ENXIO; 2259 } 2260 2261 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress); 2262 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress); 2263 2264 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 2265 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 2266 if (!priv->rx_urb || !priv->tx_urb) { 2267 dev_err(&interface->dev, "cannot allocate URB\n"); 2268 return -ENOMEM; 2269 } 2270 2271 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE; 2272 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); 2273 if (!priv->bulk_out_buffer) 2274 return -ENOMEM; 2275 2276 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); 2277 2278 return 0; 2279 } 2280 2281 static struct ieee80211_rate at76_rates[] = { 2282 { .bitrate = 10, .hw_value = TX_RATE_1MBIT, }, 2283 { .bitrate = 20, .hw_value = TX_RATE_2MBIT, }, 2284 { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, }, 2285 { .bitrate = 110, .hw_value = TX_RATE_11MBIT, }, 2286 }; 2287 2288 static struct ieee80211_channel at76_channels[] = { 2289 { .center_freq = 2412, .hw_value = 1 }, 2290 { .center_freq = 2417, .hw_value = 2 }, 2291 { .center_freq = 2422, .hw_value = 3 }, 2292 { .center_freq = 2427, .hw_value = 4 }, 2293 { .center_freq = 2432, .hw_value = 5 }, 2294 { .center_freq = 2437, .hw_value = 6 }, 2295 { .center_freq = 2442, .hw_value = 7 }, 2296 { .center_freq = 2447, .hw_value = 8 }, 2297 { .center_freq = 2452, .hw_value = 9 }, 2298 { .center_freq = 2457, .hw_value = 10 }, 2299 { .center_freq = 2462, .hw_value = 11 }, 2300 { .center_freq = 2467, .hw_value = 12 }, 2301 { .center_freq = 2472, .hw_value = 13 }, 2302 { .center_freq = 2484, .hw_value = 14 } 2303 }; 2304 2305 static struct ieee80211_supported_band at76_supported_band = { 2306 .channels = at76_channels, 2307 .n_channels = ARRAY_SIZE(at76_channels), 2308 .bitrates = at76_rates, 2309 .n_bitrates = ARRAY_SIZE(at76_rates), 2310 }; 2311 2312 /* Register network device and initialize the hardware */ 2313 static int at76_init_new_device(struct at76_priv *priv, 2314 struct usb_interface *interface) 2315 { 2316 struct wiphy *wiphy; 2317 size_t len; 2318 int ret; 2319 2320 /* set up the endpoint information */ 2321 /* check out the endpoints */ 2322 2323 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints", 2324 interface->cur_altsetting->desc.bNumEndpoints); 2325 2326 ret = at76_alloc_urbs(priv, interface); 2327 if (ret < 0) 2328 goto exit; 2329 2330 /* MAC address */ 2331 ret = at76_get_hw_config(priv); 2332 if (ret < 0) { 2333 dev_err(&interface->dev, "cannot get MAC address\n"); 2334 goto exit; 2335 } 2336 2337 priv->domain = at76_get_reg_domain(priv->regulatory_domain); 2338 2339 priv->channel = DEF_CHANNEL; 2340 priv->iw_mode = IW_MODE_INFRA; 2341 priv->rts_threshold = DEF_RTS_THRESHOLD; 2342 priv->frag_threshold = DEF_FRAG_THRESHOLD; 2343 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT; 2344 priv->txrate = TX_RATE_AUTO; 2345 priv->preamble_type = PREAMBLE_TYPE_LONG; 2346 priv->beacon_period = 100; 2347 priv->auth_mode = WLAN_AUTH_OPEN; 2348 priv->scan_min_time = DEF_SCAN_MIN_TIME; 2349 priv->scan_max_time = DEF_SCAN_MAX_TIME; 2350 priv->scan_mode = SCAN_TYPE_ACTIVE; 2351 priv->device_unplugged = 0; 2352 2353 /* mac80211 initialisation */ 2354 wiphy = priv->hw->wiphy; 2355 priv->hw->wiphy->max_scan_ssids = 1; 2356 priv->hw->wiphy->max_scan_ie_len = 0; 2357 priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); 2358 priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = &at76_supported_band; 2359 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS); 2360 ieee80211_hw_set(priv->hw, SIGNAL_UNSPEC); 2361 priv->hw->max_signal = 100; 2362 2363 SET_IEEE80211_DEV(priv->hw, &interface->dev); 2364 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); 2365 2366 len = sizeof(wiphy->fw_version); 2367 snprintf(wiphy->fw_version, len, "%d.%d.%d-%d", 2368 priv->fw_version.major, priv->fw_version.minor, 2369 priv->fw_version.patch, priv->fw_version.build); 2370 2371 wiphy->hw_version = priv->board_type; 2372 2373 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 2374 2375 ret = ieee80211_register_hw(priv->hw); 2376 if (ret) { 2377 printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n", 2378 ret); 2379 goto exit; 2380 } 2381 2382 priv->mac80211_registered = 1; 2383 2384 wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n", 2385 dev_name(&interface->dev), priv->mac_addr, 2386 priv->fw_version.major, priv->fw_version.minor, 2387 priv->fw_version.patch, priv->fw_version.build); 2388 wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n", 2389 priv->regulatory_domain, priv->domain->name); 2390 2391 exit: 2392 return ret; 2393 } 2394 2395 static void at76_delete_device(struct at76_priv *priv) 2396 { 2397 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); 2398 2399 /* The device is gone, don't bother turning it off */ 2400 priv->device_unplugged = 1; 2401 2402 tasklet_kill(&priv->rx_tasklet); 2403 2404 if (priv->mac80211_registered) 2405 ieee80211_unregister_hw(priv->hw); 2406 2407 if (priv->tx_urb) { 2408 usb_kill_urb(priv->tx_urb); 2409 usb_free_urb(priv->tx_urb); 2410 } 2411 if (priv->rx_urb) { 2412 usb_kill_urb(priv->rx_urb); 2413 usb_free_urb(priv->rx_urb); 2414 } 2415 2416 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__); 2417 2418 kfree(priv->bulk_out_buffer); 2419 2420 del_timer_sync(&ledtrig_tx_timer); 2421 2422 kfree_skb(priv->rx_skb); 2423 2424 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw", 2425 __func__); 2426 ieee80211_free_hw(priv->hw); 2427 2428 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); 2429 } 2430 2431 static int at76_probe(struct usb_interface *interface, 2432 const struct usb_device_id *id) 2433 { 2434 int ret; 2435 struct at76_priv *priv; 2436 struct fwentry *fwe; 2437 struct usb_device *udev; 2438 int op_mode; 2439 int need_ext_fw = 0; 2440 struct mib_fw_version *fwv; 2441 int board_type = (int)id->driver_info; 2442 2443 udev = usb_get_dev(interface_to_usbdev(interface)); 2444 2445 fwv = kmalloc(sizeof(*fwv), GFP_KERNEL); 2446 if (!fwv) { 2447 ret = -ENOMEM; 2448 goto exit; 2449 } 2450 2451 /* Load firmware into kernel memory */ 2452 fwe = at76_load_firmware(udev, board_type); 2453 if (!fwe) { 2454 ret = -ENOENT; 2455 goto exit; 2456 } 2457 2458 op_mode = at76_get_op_mode(udev); 2459 2460 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); 2461 2462 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ??? 2463 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */ 2464 2465 if (op_mode == OPMODE_HW_CONFIG_MODE) { 2466 dev_err(&interface->dev, 2467 "cannot handle a device in HW_CONFIG_MODE\n"); 2468 ret = -EBUSY; 2469 goto exit; 2470 } 2471 2472 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH 2473 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { 2474 /* download internal firmware part */ 2475 dev_printk(KERN_DEBUG, &interface->dev, 2476 "downloading internal firmware\n"); 2477 ret = at76_load_internal_fw(udev, fwe); 2478 if (ret < 0) { 2479 dev_err(&interface->dev, 2480 "error %d downloading internal firmware\n", 2481 ret); 2482 } 2483 goto exit; 2484 } 2485 2486 /* Internal firmware already inside the device. Get firmware 2487 * version to test if external firmware is loaded. 2488 * This works only for newer firmware, e.g. the Intersil 0.90.x 2489 * says "control timeout on ep0in" and subsequent 2490 * at76_get_op_mode() fail too :-( */ 2491 2492 /* if version >= 0.100.x.y or device with built-in flash we can 2493 * query the device for the fw version */ 2494 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100) 2495 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) { 2496 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv)); 2497 if (ret < 0 || (fwv->major | fwv->minor) == 0) 2498 need_ext_fw = 1; 2499 } else 2500 /* No way to check firmware version, reload to be sure */ 2501 need_ext_fw = 1; 2502 2503 if (need_ext_fw) { 2504 dev_printk(KERN_DEBUG, &interface->dev, 2505 "downloading external firmware\n"); 2506 2507 ret = at76_load_external_fw(udev, fwe); 2508 if (ret < 0) 2509 goto exit; 2510 2511 /* Re-check firmware version */ 2512 ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv)); 2513 if (ret < 0) { 2514 dev_err(&interface->dev, 2515 "error %d getting firmware version\n", ret); 2516 goto exit; 2517 } 2518 } 2519 2520 priv = at76_alloc_new_device(udev); 2521 if (!priv) { 2522 ret = -ENOMEM; 2523 goto exit; 2524 } 2525 2526 usb_set_intfdata(interface, priv); 2527 2528 memcpy(&priv->fw_version, fwv, sizeof(*fwv)); 2529 priv->board_type = board_type; 2530 2531 ret = at76_init_new_device(priv, interface); 2532 if (ret < 0) 2533 at76_delete_device(priv); 2534 2535 exit: 2536 kfree(fwv); 2537 if (ret < 0) 2538 usb_put_dev(udev); 2539 return ret; 2540 } 2541 2542 static void at76_disconnect(struct usb_interface *interface) 2543 { 2544 struct at76_priv *priv; 2545 2546 priv = usb_get_intfdata(interface); 2547 usb_set_intfdata(interface, NULL); 2548 2549 /* Disconnect after loading internal firmware */ 2550 if (!priv) 2551 return; 2552 2553 wiphy_info(priv->hw->wiphy, "disconnecting\n"); 2554 at76_delete_device(priv); 2555 usb_put_dev(priv->udev); 2556 dev_info(&interface->dev, "disconnected\n"); 2557 } 2558 2559 /* Structure for registering this driver with the USB subsystem */ 2560 static struct usb_driver at76_driver = { 2561 .name = DRIVER_NAME, 2562 .probe = at76_probe, 2563 .disconnect = at76_disconnect, 2564 .id_table = dev_table, 2565 .disable_hub_initiated_lpm = 1, 2566 }; 2567 2568 static int __init at76_mod_init(void) 2569 { 2570 int result; 2571 2572 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n"); 2573 2574 /* register this driver with the USB subsystem */ 2575 result = usb_register(&at76_driver); 2576 if (result < 0) 2577 printk(KERN_ERR DRIVER_NAME 2578 ": usb_register failed (status %d)\n", result); 2579 else 2580 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx); 2581 return result; 2582 } 2583 2584 static void __exit at76_mod_exit(void) 2585 { 2586 int i; 2587 2588 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n"); 2589 usb_deregister(&at76_driver); 2590 for (i = 0; i < ARRAY_SIZE(firmwares); i++) 2591 release_firmware(firmwares[i].fw); 2592 led_trigger_unregister_simple(ledtrig_tx); 2593 } 2594 2595 module_param_named(debug, at76_debug, uint, 0600); 2596 MODULE_PARM_DESC(debug, "Debugging level"); 2597 2598 module_init(at76_mod_init); 2599 module_exit(at76_mod_exit); 2600 2601 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>"); 2602 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>"); 2603 MODULE_AUTHOR("Alex <alex@foogod.com>"); 2604 MODULE_AUTHOR("Nick Jones"); 2605 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>"); 2606 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>"); 2607 MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>"); 2608 MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>"); 2609 MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>"); 2610 MODULE_DESCRIPTION(DRIVER_DESC); 2611 MODULE_LICENSE("GPL"); 2612