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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * at76c503/at76c505 USB driver4 *5 * Copyright (c) 2002 - 2003 Oliver Kurth6 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>7 * Copyright (c) 2004 Nick Jones8 * 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 the14 * Atmel AT76C503A/505/505A.15 *16 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed17 *18 * TODO list is at the wiki:19 *20 * https://wireless.wiki.kernel.org/en/users/Drivers/at76c50x-usb#TODO21 */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 0x4000000082#define DBG_MAC80211 0x8000000083 84#define DBG_DEFAULTS 085 86/* Use our own dbg macro */87#define at76_dbg(bits, format, arg...) \88do { \89 if (at76_debug & (bits)) \90 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \91} while (0)92 93#define at76_dbg_dump(bits, buf, len, format, arg...) \94do { \95 if (at76_debug & (bits)) { \96 printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \97 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \98 } \99} while (0)100 101static uint at76_debug = DBG_DEFAULTS;102 103/* Protect against concurrent firmware loading and parsing */104static DEFINE_MUTEX(fw_mutex);105 106static struct fwentry firmwares[] = {107 [0] = { "" },108 [BOARD_503_ISL3861] = { "atmel_at76c503-i3861.bin" },109 [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" },110 [BOARD_503] = { "atmel_at76c503-rfmd.bin" },111 [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" },112 [BOARD_505] = { "atmel_at76c505-rfmd.bin" },113 [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" },114 [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" },115 [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" },116};117MODULE_FIRMWARE("atmel_at76c503-i3861.bin");118MODULE_FIRMWARE("atmel_at76c503-i3863.bin");119MODULE_FIRMWARE("atmel_at76c503-rfmd.bin");120MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin");121MODULE_FIRMWARE("atmel_at76c505-rfmd.bin");122MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin");123MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin");124MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin");125 126#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)127 128static const struct usb_device_id dev_table[] = {129 /*130 * at76c503-i3861131 */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-i3863164 */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-rfmd171 */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-acc218 */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-rfmd225 */226 /* Generic AT76C505/RFMD */227 { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) },228 /*229 * at76c505-rfmd2958230 */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-rfmd2958247 */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-rfmd258 */259 /* Generic AT76C505AMX device */260 { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) },261 { }262};263 264MODULE_DEVICE_TABLE(usb, dev_table);265 266/* Supported rates of this hardware, bit 7 marks basic rates */267static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };268 269static const char *const preambles[] = { "long", "short", "auto" };270 271/* Firmware download */272/* DFU states */273#define STATE_IDLE 0x00274#define STATE_DETACH 0x01275#define STATE_DFU_IDLE 0x02276#define STATE_DFU_DOWNLOAD_SYNC 0x03277#define STATE_DFU_DOWNLOAD_BUSY 0x04278#define STATE_DFU_DOWNLOAD_IDLE 0x05279#define STATE_DFU_MANIFEST_SYNC 0x06280#define STATE_DFU_MANIFEST 0x07281#define STATE_DFU_MANIFEST_WAIT_RESET 0x08282#define STATE_DFU_UPLOAD_IDLE 0x09283#define STATE_DFU_ERROR 0x0a284 285/* DFU commands */286#define DFU_DETACH 0287#define DFU_DNLOAD 1288#define DFU_UPLOAD 2289#define DFU_GETSTATUS 3290#define DFU_CLRSTATUS 4291#define DFU_GETSTATE 5292#define DFU_ABORT 6293 294#define FW_BLOCK_SIZE 1024295 296struct dfu_status {297 unsigned char status;298 unsigned char poll_timeout[3];299 unsigned char state;300 unsigned char string;301} __packed;302 303static inline int at76_is_intersil(enum board_type board)304{305 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);306}307 308static inline int at76_is_503rfmd(enum board_type board)309{310 return (board == BOARD_503 || board == BOARD_503_ACC);311}312 313static inline int at76_is_505a(enum board_type board)314{315 return (board == BOARD_505A || board == BOARD_505AMX);316}317 318/* Load a block of the first (internal) part of the firmware */319static int at76_load_int_fw_block(struct usb_device *udev, int blockno,320 void *block, int size)321{322 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,323 USB_TYPE_CLASS | USB_DIR_OUT |324 USB_RECIP_INTERFACE, blockno, 0, block, size,325 USB_CTRL_GET_TIMEOUT);326}327 328static int at76_dfu_get_status(struct usb_device *udev,329 struct dfu_status *status)330{331 int ret;332 333 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,334 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,335 0, 0, status, sizeof(*status),336 USB_CTRL_GET_TIMEOUT);337 return ret;338}339 340static int at76_dfu_get_state(struct usb_device *udev, u8 *state)341{342 int ret;343 344 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,345 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,346 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);347 return ret;348}349 350/* Convert timeout from the DFU status to jiffies */351static inline unsigned long at76_get_timeout(struct dfu_status *s)352{353 return msecs_to_jiffies((s->poll_timeout[2] << 16)354 | (s->poll_timeout[1] << 8)355 | (s->poll_timeout[0]));356}357 358/* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use359 * its value in jiffies in the MANIFEST_SYNC state. */360static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,361 int manifest_sync_timeout)362{363 int ret = 0;364 int need_dfu_state = 1;365 int is_done = 0;366 u32 dfu_timeout = 0;367 int bsize = 0;368 int blockno = 0;369 struct dfu_status *dfu_stat_buf;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 } else420 dev_err(&udev->dev,421 "at76_dfu_get_status returned %d\n",422 ret);423 break;424 425 case STATE_DFU_DOWNLOAD_BUSY:426 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");427 need_dfu_state = 1;428 429 at76_dbg(DBG_DFU, "DFU: Resetting device");430 schedule_timeout_interruptible(dfu_timeout);431 break;432 433 case STATE_DFU_DOWNLOAD_IDLE:434 at76_dbg(DBG_DFU, "DOWNLOAD...");435 fallthrough;436 case STATE_DFU_IDLE:437 at76_dbg(DBG_DFU, "DFU IDLE");438 439 bsize = min_t(int, size, FW_BLOCK_SIZE);440 memcpy(block, buf, bsize);441 at76_dbg(DBG_DFU, "int fw, size left = %5d, "442 "bsize = %4d, blockno = %2d", size, bsize,443 blockno);444 ret =445 at76_load_int_fw_block(udev, blockno, block, bsize);446 buf += bsize;447 size -= bsize;448 blockno++;449 450 if (ret != bsize)451 dev_err(&udev->dev,452 "at76_load_int_fw_block returned %d\n",453 ret);454 need_dfu_state = 1;455 break;456 457 case STATE_DFU_MANIFEST_SYNC:458 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");459 460 ret = at76_dfu_get_status(udev, dfu_stat_buf);461 if (ret < 0)462 break;463 464 *dfu_state = dfu_stat_buf->state;465 dfu_timeout = at76_get_timeout(dfu_stat_buf);466 need_dfu_state = 0;467 468 /* override the timeout from the status response,469 needed for AT76C505A */470 if (manifest_sync_timeout > 0)471 dfu_timeout = manifest_sync_timeout;472 473 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");474 schedule_timeout_interruptible(dfu_timeout);475 break;476 477 case STATE_DFU_MANIFEST:478 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");479 is_done = 1;480 break;481 482 case STATE_DFU_MANIFEST_WAIT_RESET:483 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");484 is_done = 1;485 break;486 487 case STATE_DFU_UPLOAD_IDLE:488 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");489 break;490 491 case STATE_DFU_ERROR:492 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");493 ret = -EPIPE;494 break;495 496 default:497 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", *dfu_state);498 ret = -EINVAL;499 break;500 }501 } while (!is_done && (ret >= 0));502 503exit:504 kfree(dfu_state);505 kfree(block);506 kfree(dfu_stat_buf);507 508 if (ret >= 0)509 ret = 0;510 511 return ret;512}513 514/* LED trigger */515static int tx_activity;516static void at76_ledtrig_tx_timerfunc(struct timer_list *unused);517static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc);518DEFINE_LED_TRIGGER(ledtrig_tx);519 520static void at76_ledtrig_tx_timerfunc(struct timer_list *unused)521{522 static int tx_lastactivity;523 524 if (tx_lastactivity != tx_activity) {525 tx_lastactivity = tx_activity;526 led_trigger_event(ledtrig_tx, LED_FULL);527 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);528 } else529 led_trigger_event(ledtrig_tx, LED_OFF);530}531 532static void at76_ledtrig_tx_activity(void)533{534 tx_activity++;535 if (!timer_pending(&ledtrig_tx_timer))536 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);537}538 539static int at76_remap(struct usb_device *udev)540{541 int ret;542 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,543 USB_TYPE_VENDOR | USB_DIR_OUT |544 USB_RECIP_INTERFACE, 0, 0, NULL, 0,545 USB_CTRL_GET_TIMEOUT);546 if (ret < 0)547 return ret;548 return 0;549}550 551static int at76_get_op_mode(struct usb_device *udev)552{553 int ret;554 u8 saved;555 u8 *op_mode;556 557 op_mode = kmalloc(1, GFP_NOIO);558 if (!op_mode)559 return -ENOMEM;560 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,561 USB_TYPE_VENDOR | USB_DIR_IN |562 USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,563 USB_CTRL_GET_TIMEOUT);564 saved = *op_mode;565 kfree(op_mode);566 567 if (ret < 0)568 return ret;569 else if (ret < 1)570 return -EIO;571 else572 return saved;573}574 575/* Load a block of the second ("external") part of the firmware */576static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,577 void *block, int size)578{579 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,580 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,581 0x0802, blockno, block, size,582 USB_CTRL_GET_TIMEOUT);583}584 585static inline int at76_get_hw_cfg(struct usb_device *udev,586 union at76_hwcfg *buf, int buf_size)587{588 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,589 USB_TYPE_VENDOR | USB_DIR_IN |590 USB_RECIP_INTERFACE, 0x0a02, 0,591 buf, buf_size, USB_CTRL_GET_TIMEOUT);592}593 594/* Intersil boards use a different "value" for GetHWConfig requests */595static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,596 union at76_hwcfg *buf, int buf_size)597{598 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,599 USB_TYPE_VENDOR | USB_DIR_IN |600 USB_RECIP_INTERFACE, 0x0902, 0,601 buf, buf_size, USB_CTRL_GET_TIMEOUT);602}603 604/* Get the hardware configuration for the adapter and put it to the appropriate605 * fields of 'priv' (the GetHWConfig request and interpretation of the result606 * depends on the board type) */607static int at76_get_hw_config(struct at76_priv *priv)608{609 int ret;610 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);611 612 if (!hwcfg)613 return -ENOMEM;614 615 if (at76_is_intersil(priv->board_type)) {616 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,617 sizeof(hwcfg->i));618 if (ret < 0)619 goto exit;620 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);621 priv->regulatory_domain = hwcfg->i.regulatory_domain;622 } else if (at76_is_503rfmd(priv->board_type)) {623 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));624 if (ret < 0)625 goto exit;626 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);627 priv->regulatory_domain = hwcfg->r3.regulatory_domain;628 } else {629 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));630 if (ret < 0)631 goto exit;632 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);633 priv->regulatory_domain = hwcfg->r5.regulatory_domain;634 }635 636exit:637 kfree(hwcfg);638 if (ret < 0)639 wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n",640 ret);641 642 return ret;643}644 645static struct reg_domain const *at76_get_reg_domain(u16 code)646{647 int i;648 static struct reg_domain const fd_tab[] = {649 { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */650 { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */651 { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */652 { 0x31, "Spain", 0x600 }, /* ch 10-11 */653 { 0x32, "France", 0x1e00 }, /* ch 10-13 */654 { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */655 { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */656 { 0x50, "Israel", 0x3fc }, /* ch 3-9 */657 { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */658 };659 660 /* Last entry is fallback for unknown domain code */661 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)662 if (code == fd_tab[i].code)663 break;664 665 return &fd_tab[i];666}667 668static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,669 int buf_size)670{671 int ret;672 673 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,674 USB_TYPE_VENDOR | USB_DIR_IN |675 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,676 USB_CTRL_GET_TIMEOUT);677 if (ret >= 0 && ret != buf_size)678 return -EIO;679 return ret;680}681 682/* Return positive number for status, negative for an error */683static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)684{685 u8 *stat_buf;686 int ret;687 688 stat_buf = kmalloc(40, GFP_NOIO);689 if (!stat_buf)690 return -ENOMEM;691 692 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,693 USB_TYPE_VENDOR | USB_DIR_IN |694 USB_RECIP_INTERFACE, cmd, 0, stat_buf,695 40, USB_CTRL_GET_TIMEOUT);696 if (ret >= 0)697 ret = stat_buf[5];698 kfree(stat_buf);699 700 return ret;701}702 703#define MAKE_CMD_CASE(c) case (c): return #c704static const char *at76_get_cmd_string(u8 cmd_status)705{706 switch (cmd_status) {707 MAKE_CMD_CASE(CMD_SET_MIB);708 MAKE_CMD_CASE(CMD_GET_MIB);709 MAKE_CMD_CASE(CMD_SCAN);710 MAKE_CMD_CASE(CMD_JOIN);711 MAKE_CMD_CASE(CMD_START_IBSS);712 MAKE_CMD_CASE(CMD_RADIO_ON);713 MAKE_CMD_CASE(CMD_RADIO_OFF);714 MAKE_CMD_CASE(CMD_STARTUP);715 }716 717 return "UNKNOWN";718}719 720static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,721 int buf_size)722{723 int ret;724 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 #c749static const char *at76_get_cmd_status_string(u8 cmd_status)750{751 switch (cmd_status) {752 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);753 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);754 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);755 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);756 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);757 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);758 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);759 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);760 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);761 }762 763 return "UNKNOWN";764}765 766/* Wait until the command is completed */767static int at76_wait_completion(struct at76_priv *priv, int cmd)768{769 int status = 0;770 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;771 772 do {773 status = at76_get_cmd_status(priv->udev, cmd);774 if (status < 0) {775 wiphy_err(priv->hw->wiphy,776 "at76_get_cmd_status failed: %d\n",777 status);778 break;779 }780 781 at76_dbg(DBG_WAIT_COMPLETE,782 "%s: Waiting on cmd %d, status = %d (%s)",783 wiphy_name(priv->hw->wiphy), cmd, status,784 at76_get_cmd_status_string(status));785 786 if (status != CMD_STATUS_IN_PROGRESS787 && status != CMD_STATUS_IDLE)788 break;789 790 schedule_timeout_interruptible(HZ / 10); /* 100 ms */791 if (time_after(jiffies, timeout)) {792 wiphy_err(priv->hw->wiphy,793 "completion timeout for command %d\n", cmd);794 status = -ETIMEDOUT;795 break;796 }797 } while (1);798 799 return status;800}801 802static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)803{804 int ret;805 806 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,807 offsetof(struct set_mib_buffer,808 data) + buf->size);809 if (ret < 0)810 return ret;811 812 ret = at76_wait_completion(priv, CMD_SET_MIB);813 if (ret != CMD_STATUS_COMPLETE) {814 wiphy_info(priv->hw->wiphy,815 "set_mib: at76_wait_completion failed with %d\n",816 ret);817 ret = -EIO;818 }819 820 return ret;821}822 823/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */824static int at76_set_radio(struct at76_priv *priv, int enable)825{826 int ret;827 int cmd;828 829 if (priv->radio_on == enable)830 return 0;831 832 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;833 834 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);835 if (ret < 0)836 wiphy_err(priv->hw->wiphy,837 "at76_set_card_command(%d) failed: %d\n", cmd, ret);838 else839 ret = 1;840 841 priv->radio_on = enable;842 return ret;843}844 845/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */846static int at76_set_pm_mode(struct at76_priv *priv)847{848 int ret = 0;849 850 priv->mib_buf.type = MIB_MAC_MGMT;851 priv->mib_buf.size = 1;852 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);853 priv->mib_buf.data.byte = priv->pm_mode;854 855 ret = at76_set_mib(priv, &priv->mib_buf);856 if (ret < 0)857 wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n",858 ret);859 860 return ret;861}862 863static int at76_set_preamble(struct at76_priv *priv, u8 type)864{865 int ret = 0;866 867 priv->mib_buf.type = MIB_LOCAL;868 priv->mib_buf.size = 1;869 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);870 priv->mib_buf.data.byte = type;871 872 ret = at76_set_mib(priv, &priv->mib_buf);873 if (ret < 0)874 wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n",875 ret);876 877 return ret;878}879 880static int at76_set_frag(struct at76_priv *priv, u16 size)881{882 int ret = 0;883 884 priv->mib_buf.type = MIB_MAC;885 priv->mib_buf.size = 2;886 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);887 priv->mib_buf.data.word = cpu_to_le16(size);888 889 ret = at76_set_mib(priv, &priv->mib_buf);890 if (ret < 0)891 wiphy_err(priv->hw->wiphy,892 "set_mib (frag threshold) failed: %d\n", ret);893 894 return ret;895}896 897static int at76_set_rts(struct at76_priv *priv, u16 size)898{899 int ret = 0;900 901 priv->mib_buf.type = MIB_MAC;902 priv->mib_buf.size = 2;903 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);904 priv->mib_buf.data.word = cpu_to_le16(size);905 906 ret = at76_set_mib(priv, &priv->mib_buf);907 if (ret < 0)908 wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret);909 910 return ret;911}912 913static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)914{915 int ret = 0;916 917 priv->mib_buf.type = MIB_LOCAL;918 priv->mib_buf.size = 1;919 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);920 priv->mib_buf.data.byte = onoff;921 922 ret = at76_set_mib(priv, &priv->mib_buf);923 if (ret < 0)924 wiphy_err(priv->hw->wiphy,925 "set_mib (autorate fallback) failed: %d\n", ret);926 927 return ret;928}929 930static void at76_dump_mib_mac_addr(struct at76_priv *priv)931{932 int i;933 int ret;934 struct mib_mac_addr *m = kmalloc(sizeof(*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]);953exit:954 kfree(m);955}956 957static 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]);990exit:991 kfree(m);992}993 994static 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);1026exit:1027 kfree(m);1028}1029 1030static 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);1063exit:1064 kfree(m);1065}1066 1067static 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);1096exit:1097 kfree(m);1098}1099 1100static 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);1121exit:1122 kfree(m);1123}1124 1125static 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);1147exit:1148 kfree(m);1149}1150 1151/* Enable monitor mode */1152static 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 ... */1176static 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 1192static void at76_rx_callback(struct urb *urb)1193{1194 struct at76_priv *priv = urb->context;1195 1196 tasklet_schedule(&priv->rx_tasklet);1197}1198 1199static 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 else1234 wiphy_err(priv->hw->wiphy,1235 "rx, usb_submit_urb failed: %d\n", ret);1236 }1237 1238exit: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 */1247static 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 1299exit: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 */1308static 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 1338exit:1339 return ret;1340}1341 1342static 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 else1380 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 */1460static 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 */1485static 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 frequency1497 * information.1498 * However during scan the HW performs a sweep by itself, and we1499 * 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 for1504 * whatever reason we fail to parse beacons and probe responses, this1505 * function returns the priv->channel information, that should be correct1506 * at least when we are not scanning.1507 */1508static 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 1537exit:1538 return ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);1539}1540 1541static 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 */1596static 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 1661exit:1662 mutex_unlock(&fw_mutex);1663 1664 if (fwe->loaded)1665 return fwe;1666 else1667 return NULL;1668}1669 1670static 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 1706static 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 1722static 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 1754static 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 to1774 * authenticate with a new bssid. The driver must send CMD_JOIN before1775 * an authentication frame is transmitted. For this to succeed, the1776 * correct bssid of the AP must be known. As mac80211 does not inform1777 * drivers about the bssid prior to the authentication process the1778 * following workaround is necessary. If the TX frame is an1779 * 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 1827static 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 1847error:1848 mutex_unlock(&priv->mtx);1849 1850 return 0;1851}1852 1853static 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 the1867 * 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 1878static 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 1897exit:1898 mutex_unlock(&priv->mtx);1899 1900 return ret;1901}1902 1903static void at76_remove_interface(struct ieee80211_hw *hw,1904 struct ieee80211_vif *vif)1905{1906 at76_dbg(DBG_MAC80211, "%s()", __func__);1907}1908 1909static 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 1947static 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 1999exit:2000 mutex_unlock(&priv->mtx);2001 2002 return 0;2003}2004 2005static 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 else2020 at76_start_monitor(priv);2021 2022 mutex_unlock(&priv->mtx);2023 2024 return 0;2025}2026 2027static 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 */2053static 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 with2072 * priv->mtx, but it's impossible because this function needs to be2073 * 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 } else2082 return;2083 2084 ieee80211_queue_work(hw, &priv->work_set_promisc);2085}2086 2087static 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 else2102 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 2125static 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 2174static 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 */2193static 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 2226static 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 2281static 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 2288static 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 2305static 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 */2313static 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 2391exit:2392 return ret;2393}2394 2395static 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 2431static 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_FLASH2473 && 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 firmware2487 * version to test if external firmware is loaded.2488 * This works only for newer firmware, e.g. the Intersil 0.90.x2489 * says "control timeout on ep0in" and subsequent2490 * at76_get_op_mode() fail too :-( */2491 2492 /* if version >= 0.100.x.y or device with built-in flash we can2493 * 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 } else2500 /* 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 2535exit:2536 kfree(fwv);2537 if (ret < 0)2538 usb_put_dev(udev);2539 return ret;2540}2541 2542static 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 */2560static 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 2568static 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_NAME2578 ": usb_register failed (status %d)\n", result);2579 else2580 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);2581 return result;2582}2583 2584static 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 2595module_param_named(debug, at76_debug, uint, 0600);2596MODULE_PARM_DESC(debug, "Debugging level");2597 2598module_init(at76_mod_init);2599module_exit(at76_mod_exit);2600 2601MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");2602MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");2603MODULE_AUTHOR("Alex <alex@foogod.com>");2604MODULE_AUTHOR("Nick Jones");2605MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");2606MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");2607MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");2608MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>");2609MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>");2610MODULE_DESCRIPTION(DRIVER_DESC);2611MODULE_LICENSE("GPL");2612