diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/net/wireless/at76c50x-usb.c | |
parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) |
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/net/wireless/at76c50x-usb.c')
-rw-r--r-- | drivers/net/wireless/at76c50x-usb.c | 2610 |
1 files changed, 0 insertions, 2610 deletions
diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c deleted file mode 100644 index 62a4316c2..000000000 --- a/drivers/net/wireless/at76c50x-usb.c +++ /dev/null @@ -1,2610 +0,0 @@ -/* - * at76c503/at76c505 USB driver - * - * Copyright (c) 2002 - 2003 Oliver Kurth - * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de> - * Copyright (c) 2004 Nick Jones - * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com> - * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org> - * Copyright (c) 2007 Kalle Valo <kalle.valo@iki.fi> - * Copyright (c) 2010 Sebastian Smolorz <sesmo@gmx.net> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This file is part of the Berlios driver for WLAN USB devices based on the - * Atmel AT76C503A/505/505A. - * - * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed - * - * TODO list is at the wiki: - * - * http://wireless.kernel.org/en/users/Drivers/at76c50x-usb#TODO - * - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/errno.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/list.h> -#include <linux/usb.h> -#include <linux/netdevice.h> -#include <linux/if_arp.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/wireless.h> -#include <net/iw_handler.h> -#include <net/ieee80211_radiotap.h> -#include <linux/firmware.h> -#include <linux/leds.h> -#include <net/mac80211.h> - -#include "at76c50x-usb.h" - -/* Version information */ -#define DRIVER_NAME "at76c50x-usb" -#define DRIVER_VERSION "0.17" -#define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver" - -/* at76_debug bits */ -#define DBG_PROGRESS 0x00000001 /* authentication/accociation */ -#define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */ -#define DBG_IOCTL 0x00000004 /* ioctl calls / settings */ -#define DBG_MAC_STATE 0x00000008 /* MAC state transitions */ -#define DBG_TX_DATA 0x00000010 /* tx header */ -#define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */ -#define DBG_TX_MGMT 0x00000040 /* tx management */ -#define DBG_RX_DATA 0x00000080 /* rx data header */ -#define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */ -#define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */ -#define DBG_RX_BEACON 0x00000400 /* rx beacon */ -#define DBG_RX_CTRL 0x00000800 /* rx control */ -#define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */ -#define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */ -#define DBG_DEVSTART 0x00004000 /* fw download, device start */ -#define DBG_URB 0x00008000 /* rx urb status, ... */ -#define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */ -#define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */ -#define DBG_PM 0x00040000 /* power management settings */ -#define DBG_BSS_MATCH 0x00080000 /* BSS match failures */ -#define DBG_PARAMS 0x00100000 /* show configured parameters */ -#define DBG_WAIT_COMPLETE 0x00200000 /* command completion */ -#define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */ -#define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */ -#define DBG_MONITOR_MODE 0x01000000 /* monitor mode */ -#define DBG_MIB 0x02000000 /* dump all MIBs on startup */ -#define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */ -#define DBG_WE_EVENTS 0x08000000 /* dump wireless events */ -#define DBG_FW 0x10000000 /* firmware download */ -#define DBG_DFU 0x20000000 /* device firmware upgrade */ -#define DBG_CMD 0x40000000 -#define DBG_MAC80211 0x80000000 - -#define DBG_DEFAULTS 0 - -/* Use our own dbg macro */ -#define at76_dbg(bits, format, arg...) \ -do { \ - if (at76_debug & (bits)) \ - printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \ -} while (0) - -#define at76_dbg_dump(bits, buf, len, format, arg...) \ -do { \ - if (at76_debug & (bits)) { \ - printk(KERN_DEBUG DRIVER_NAME ": " format "\n", ##arg); \ - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); \ - } \ -} while (0) - -static uint at76_debug = DBG_DEFAULTS; - -/* Protect against concurrent firmware loading and parsing */ -static struct mutex fw_mutex; - -static struct fwentry firmwares[] = { - [0] = { "" }, - [BOARD_503_ISL3861] = { "/*(DEBLOBBED)*/" }, - [BOARD_503_ISL3863] = { "/*(DEBLOBBED)*/" }, - [BOARD_503] = { "/*(DEBLOBBED)*/" }, - [BOARD_503_ACC] = { "/*(DEBLOBBED)*/" }, - [BOARD_505] = { "/*(DEBLOBBED)*/" }, - [BOARD_505_2958] = { "/*(DEBLOBBED)*/" }, - [BOARD_505A] = { "/*(DEBLOBBED)*/" }, - [BOARD_505AMX] = { "/*(DEBLOBBED)*/" }, -}; -/*(DEBLOBBED)*/ - -#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops) - -static struct usb_device_id dev_table[] = { - /* - * at76c503-i3861 - */ - /* Generic AT76C503/3861 device */ - { USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Linksys WUSB11 v2.1/v2.6 */ - { USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Netgear MA101 rev. A */ - { USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Tekram U300C / Allnet ALL0193 */ - { USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* HP HN210W J7801A */ - { USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Sitecom/Z-Com/Zyxel M4Y-750 */ - { USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Dynalink/Askey WLL013 (intersil) */ - { USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */ - { USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* BenQ AWL300 */ - { USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Addtron AWU-120, Compex WLU11 */ - { USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Intel AP310 AnyPoint II USB */ - { USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Dynalink L11U */ - { USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* Arescom WL-210, FCC id 07J-GL2411USB */ - { USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* I-O DATA WN-B11/USB */ - { USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* BT Voyager 1010 */ - { USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861) }, - /* - * at76c503-i3863 - */ - /* Generic AT76C503/3863 device */ - { USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863) }, - /* Samsung SWL-2100U */ - { USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863) }, - /* - * at76c503-rfmd - */ - /* Generic AT76C503/RFMD device */ - { USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503) }, - /* Dynalink/Askey WLL013 (rfmd) */ - { USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503) }, - /* Linksys WUSB11 v2.6 */ - { USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503) }, - /* Network Everywhere NWU11B */ - { USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503) }, - /* Netgear MA101 rev. B */ - { USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503) }, - /* D-Link DWL-120 rev. E */ - { USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503) }, - /* Actiontec 802UAT1, HWU01150-01UK */ - { USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503) }, - /* AirVast W-Buddie WN210 */ - { USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503) }, - /* Dick Smith Electronics XH1153 802.11b USB adapter */ - { USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503) }, - /* CNet CNUSB611 */ - { USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503) }, - /* FiberLine FL-WL200U */ - { USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503) }, - /* BenQ AWL400 USB stick */ - { USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503) }, - /* 3Com 3CRSHEW696 */ - { USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503) }, - /* Siemens Santis ADSL WLAN USB adapter WLL 013 */ - { USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503) }, - /* Belkin F5D6050, version 2 */ - { USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503) }, - /* iBlitzz, BWU613 (not *B or *SB) */ - { USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503) }, - /* Gigabyte GN-WLBM101 */ - { USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503) }, - /* Planex GW-US11S */ - { USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503) }, - /* Internal WLAN adapter in h5[4,5]xx series iPAQs */ - { USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503) }, - /* Corega Wireless LAN USB-11 mini */ - { USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503) }, - /* Corega Wireless LAN USB-11 mini2 */ - { USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503) }, - /* Uniden PCW100 */ - { USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503) }, - /* - * at76c503-rfmd-acc - */ - /* SMC2664W */ - { USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC) }, - /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */ - { USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC) }, - /* - * at76c505-rfmd - */ - /* Generic AT76C505/RFMD */ - { USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505) }, - /* - * at76c505-rfmd2958 - */ - /* Generic AT76C505/RFMD, OvisLink WL-1130USB */ - { USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) }, - /* Fiberline FL-WL240U */ - { USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958) }, - /* CNet CNUSB-611G */ - { USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958) }, - /* Linksys WUSB11 v2.8 */ - { USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958) }, - /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */ - { USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958) }, - /* Corega WLAN USB Stick 11 */ - { USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958) }, - /* Microstar MSI Box MS6978 */ - { USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958) }, - /* - * at76c505a-rfmd2958 - */ - /* Generic AT76C505A device */ - { USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A) }, - /* Generic AT76C505AS device */ - { USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A) }, - /* Siemens Gigaset USB WLAN Adapter 11 */ - { USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A) }, - /* OQO Model 01+ Internal Wi-Fi */ - { USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A) }, - /* - * at76c505amx-rfmd - */ - /* Generic AT76C505AMX device */ - { USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX) }, - { } -}; - -MODULE_DEVICE_TABLE(usb, dev_table); - -/* Supported rates of this hardware, bit 7 marks basic rates */ -static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 }; - -static const char *const preambles[] = { "long", "short", "auto" }; - -/* Firmware download */ -/* DFU states */ -#define STATE_IDLE 0x00 -#define STATE_DETACH 0x01 -#define STATE_DFU_IDLE 0x02 -#define STATE_DFU_DOWNLOAD_SYNC 0x03 -#define STATE_DFU_DOWNLOAD_BUSY 0x04 -#define STATE_DFU_DOWNLOAD_IDLE 0x05 -#define STATE_DFU_MANIFEST_SYNC 0x06 -#define STATE_DFU_MANIFEST 0x07 -#define STATE_DFU_MANIFEST_WAIT_RESET 0x08 -#define STATE_DFU_UPLOAD_IDLE 0x09 -#define STATE_DFU_ERROR 0x0a - -/* DFU commands */ -#define DFU_DETACH 0 -#define DFU_DNLOAD 1 -#define DFU_UPLOAD 2 -#define DFU_GETSTATUS 3 -#define DFU_CLRSTATUS 4 -#define DFU_GETSTATE 5 -#define DFU_ABORT 6 - -#define FW_BLOCK_SIZE 1024 - -struct dfu_status { - unsigned char status; - unsigned char poll_timeout[3]; - unsigned char state; - unsigned char string; -} __packed; - -static inline int at76_is_intersil(enum board_type board) -{ - return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863); -} - -static inline int at76_is_503rfmd(enum board_type board) -{ - return (board == BOARD_503 || board == BOARD_503_ACC); -} - -static inline int at76_is_505a(enum board_type board) -{ - return (board == BOARD_505A || board == BOARD_505AMX); -} - -/* Load a block of the first (internal) part of the firmware */ -static int at76_load_int_fw_block(struct usb_device *udev, int blockno, - void *block, int size) -{ - return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD, - USB_TYPE_CLASS | USB_DIR_OUT | - USB_RECIP_INTERFACE, blockno, 0, block, size, - USB_CTRL_GET_TIMEOUT); -} - -static int at76_dfu_get_status(struct usb_device *udev, - struct dfu_status *status) -{ - int ret; - - ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS, - USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, - 0, 0, status, sizeof(struct dfu_status), - USB_CTRL_GET_TIMEOUT); - return ret; -} - -static int at76_dfu_get_state(struct usb_device *udev, u8 *state) -{ - int ret; - - ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE, - USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, - 0, 0, state, 1, USB_CTRL_GET_TIMEOUT); - return ret; -} - -/* Convert timeout from the DFU status to jiffies */ -static inline unsigned long at76_get_timeout(struct dfu_status *s) -{ - return msecs_to_jiffies((s->poll_timeout[2] << 16) - | (s->poll_timeout[1] << 8) - | (s->poll_timeout[0])); -} - -/* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use - * its value in jiffies in the MANIFEST_SYNC state. */ -static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size, - int manifest_sync_timeout) -{ - int ret = 0; - int need_dfu_state = 1; - int is_done = 0; - u32 dfu_timeout = 0; - int bsize = 0; - int blockno = 0; - struct dfu_status *dfu_stat_buf = NULL; - u8 *dfu_state = NULL; - u8 *block = NULL; - - at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size, - manifest_sync_timeout); - - if (!size) { - dev_err(&udev->dev, "FW buffer length invalid!\n"); - return -EINVAL; - } - - dfu_stat_buf = kmalloc(sizeof(struct dfu_status), GFP_KERNEL); - if (!dfu_stat_buf) { - ret = -ENOMEM; - goto exit; - } - - block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); - if (!block) { - ret = -ENOMEM; - goto exit; - } - - dfu_state = kmalloc(sizeof(u8), GFP_KERNEL); - if (!dfu_state) { - ret = -ENOMEM; - goto exit; - } - *dfu_state = 0; - - do { - if (need_dfu_state) { - ret = at76_dfu_get_state(udev, dfu_state); - if (ret < 0) { - dev_err(&udev->dev, - "cannot get DFU state: %d\n", ret); - goto exit; - } - need_dfu_state = 0; - } - - switch (*dfu_state) { - case STATE_DFU_DOWNLOAD_SYNC: - at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC"); - ret = at76_dfu_get_status(udev, dfu_stat_buf); - if (ret >= 0) { - *dfu_state = dfu_stat_buf->state; - dfu_timeout = at76_get_timeout(dfu_stat_buf); - need_dfu_state = 0; - } else - dev_err(&udev->dev, - "at76_dfu_get_status returned %d\n", - ret); - break; - - case STATE_DFU_DOWNLOAD_BUSY: - at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY"); - need_dfu_state = 1; - - at76_dbg(DBG_DFU, "DFU: Resetting device"); - schedule_timeout_interruptible(dfu_timeout); - break; - - case STATE_DFU_DOWNLOAD_IDLE: - at76_dbg(DBG_DFU, "DOWNLOAD..."); - /* fall through */ - case STATE_DFU_IDLE: - at76_dbg(DBG_DFU, "DFU IDLE"); - - bsize = min_t(int, size, FW_BLOCK_SIZE); - memcpy(block, buf, bsize); - at76_dbg(DBG_DFU, "int fw, size left = %5d, " - "bsize = %4d, blockno = %2d", size, bsize, - blockno); - ret = - at76_load_int_fw_block(udev, blockno, block, bsize); - buf += bsize; - size -= bsize; - blockno++; - - if (ret != bsize) - dev_err(&udev->dev, - "at76_load_int_fw_block returned %d\n", - ret); - need_dfu_state = 1; - break; - - case STATE_DFU_MANIFEST_SYNC: - at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC"); - - ret = at76_dfu_get_status(udev, dfu_stat_buf); - if (ret < 0) - break; - - *dfu_state = dfu_stat_buf->state; - dfu_timeout = at76_get_timeout(dfu_stat_buf); - need_dfu_state = 0; - - /* override the timeout from the status response, - needed for AT76C505A */ - if (manifest_sync_timeout > 0) - dfu_timeout = manifest_sync_timeout; - - at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase"); - schedule_timeout_interruptible(dfu_timeout); - break; - - case STATE_DFU_MANIFEST: - at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST"); - is_done = 1; - break; - - case STATE_DFU_MANIFEST_WAIT_RESET: - at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET"); - is_done = 1; - break; - - case STATE_DFU_UPLOAD_IDLE: - at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE"); - break; - - case STATE_DFU_ERROR: - at76_dbg(DBG_DFU, "STATE_DFU_ERROR"); - ret = -EPIPE; - break; - - default: - at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", *dfu_state); - ret = -EINVAL; - break; - } - } while (!is_done && (ret >= 0)); - -exit: - kfree(dfu_state); - kfree(block); - kfree(dfu_stat_buf); - - if (ret >= 0) - ret = 0; - - return ret; -} - -/* LED trigger */ -static int tx_activity; -static void at76_ledtrig_tx_timerfunc(unsigned long data); -static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0); -DEFINE_LED_TRIGGER(ledtrig_tx); - -static void at76_ledtrig_tx_timerfunc(unsigned long data) -{ - static int tx_lastactivity; - - if (tx_lastactivity != tx_activity) { - tx_lastactivity = tx_activity; - led_trigger_event(ledtrig_tx, LED_FULL); - mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4); - } else - led_trigger_event(ledtrig_tx, LED_OFF); -} - -static void at76_ledtrig_tx_activity(void) -{ - tx_activity++; - if (!timer_pending(&ledtrig_tx_timer)) - mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4); -} - -static int at76_remap(struct usb_device *udev) -{ - int ret; - ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a, - USB_TYPE_VENDOR | USB_DIR_OUT | - USB_RECIP_INTERFACE, 0, 0, NULL, 0, - USB_CTRL_GET_TIMEOUT); - if (ret < 0) - return ret; - return 0; -} - -static int at76_get_op_mode(struct usb_device *udev) -{ - int ret; - u8 saved; - u8 *op_mode; - - op_mode = kmalloc(1, GFP_NOIO); - if (!op_mode) - return -ENOMEM; - ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, - USB_TYPE_VENDOR | USB_DIR_IN | - USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1, - USB_CTRL_GET_TIMEOUT); - saved = *op_mode; - kfree(op_mode); - - if (ret < 0) - return ret; - else if (ret < 1) - return -EIO; - else - return saved; -} - -/* Load a block of the second ("external") part of the firmware */ -static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno, - void *block, int size) -{ - return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, - USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, - 0x0802, blockno, block, size, - USB_CTRL_GET_TIMEOUT); -} - -static inline int at76_get_hw_cfg(struct usb_device *udev, - union at76_hwcfg *buf, int buf_size) -{ - return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, - USB_TYPE_VENDOR | USB_DIR_IN | - USB_RECIP_INTERFACE, 0x0a02, 0, - buf, buf_size, USB_CTRL_GET_TIMEOUT); -} - -/* Intersil boards use a different "value" for GetHWConfig requests */ -static inline int at76_get_hw_cfg_intersil(struct usb_device *udev, - union at76_hwcfg *buf, int buf_size) -{ - return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, - USB_TYPE_VENDOR | USB_DIR_IN | - USB_RECIP_INTERFACE, 0x0902, 0, - buf, buf_size, USB_CTRL_GET_TIMEOUT); -} - -/* Get the hardware configuration for the adapter and put it to the appropriate - * fields of 'priv' (the GetHWConfig request and interpretation of the result - * depends on the board type) */ -static int at76_get_hw_config(struct at76_priv *priv) -{ - int ret; - union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL); - - if (!hwcfg) - return -ENOMEM; - - if (at76_is_intersil(priv->board_type)) { - ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg, - sizeof(hwcfg->i)); - if (ret < 0) - goto exit; - memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN); - priv->regulatory_domain = hwcfg->i.regulatory_domain; - } else if (at76_is_503rfmd(priv->board_type)) { - ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3)); - if (ret < 0) - goto exit; - memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN); - priv->regulatory_domain = hwcfg->r3.regulatory_domain; - } else { - ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5)); - if (ret < 0) - goto exit; - memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN); - priv->regulatory_domain = hwcfg->r5.regulatory_domain; - } - -exit: - kfree(hwcfg); - if (ret < 0) - wiphy_err(priv->hw->wiphy, "cannot get HW Config (error %d)\n", - ret); - - return ret; -} - -static struct reg_domain const *at76_get_reg_domain(u16 code) -{ - int i; - static struct reg_domain const fd_tab[] = { - { 0x10, "FCC (USA)", 0x7ff }, /* ch 1-11 */ - { 0x20, "IC (Canada)", 0x7ff }, /* ch 1-11 */ - { 0x30, "ETSI (most of Europe)", 0x1fff }, /* ch 1-13 */ - { 0x31, "Spain", 0x600 }, /* ch 10-11 */ - { 0x32, "France", 0x1e00 }, /* ch 10-13 */ - { 0x40, "MKK (Japan)", 0x2000 }, /* ch 14 */ - { 0x41, "MKK1 (Japan)", 0x3fff }, /* ch 1-14 */ - { 0x50, "Israel", 0x3fc }, /* ch 3-9 */ - { 0x00, "<unknown>", 0xffffffff } /* ch 1-32 */ - }; - - /* Last entry is fallback for unknown domain code */ - for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++) - if (code == fd_tab[i].code) - break; - - return &fd_tab[i]; -} - -static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf, - int buf_size) -{ - int ret; - - ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, - USB_TYPE_VENDOR | USB_DIR_IN | - USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size, - USB_CTRL_GET_TIMEOUT); - if (ret >= 0 && ret != buf_size) - return -EIO; - return ret; -} - -/* Return positive number for status, negative for an error */ -static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd) -{ - u8 *stat_buf; - int ret; - - stat_buf = kmalloc(40, GFP_NOIO); - if (!stat_buf) - return -ENOMEM; - - ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22, - USB_TYPE_VENDOR | USB_DIR_IN | - USB_RECIP_INTERFACE, cmd, 0, stat_buf, - 40, USB_CTRL_GET_TIMEOUT); - if (ret >= 0) - ret = stat_buf[5]; - kfree(stat_buf); - - return ret; -} - -#define MAKE_CMD_CASE(c) case (c): return #c -static const char *at76_get_cmd_string(u8 cmd_status) -{ - switch (cmd_status) { - MAKE_CMD_CASE(CMD_SET_MIB); - MAKE_CMD_CASE(CMD_GET_MIB); - MAKE_CMD_CASE(CMD_SCAN); - MAKE_CMD_CASE(CMD_JOIN); - MAKE_CMD_CASE(CMD_START_IBSS); - MAKE_CMD_CASE(CMD_RADIO_ON); - MAKE_CMD_CASE(CMD_RADIO_OFF); - MAKE_CMD_CASE(CMD_STARTUP); - } - - return "UNKNOWN"; -} - -static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf, - int buf_size) -{ - int ret; - struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) + - buf_size, GFP_KERNEL); - - if (!cmd_buf) - return -ENOMEM; - - cmd_buf->cmd = cmd; - cmd_buf->reserved = 0; - cmd_buf->size = cpu_to_le16(buf_size); - memcpy(cmd_buf->data, buf, buf_size); - - at76_dbg_dump(DBG_CMD, cmd_buf, sizeof(struct at76_command) + buf_size, - "issuing command %s (0x%02x)", - at76_get_cmd_string(cmd), cmd); - - ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, - USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, - 0, 0, cmd_buf, - sizeof(struct at76_command) + buf_size, - USB_CTRL_GET_TIMEOUT); - kfree(cmd_buf); - return ret; -} - -#define MAKE_CMD_STATUS_CASE(c) case (c): return #c -static const char *at76_get_cmd_status_string(u8 cmd_status) -{ - switch (cmd_status) { - MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE); - MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE); - MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN); - MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER); - MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED); - MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT); - MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS); - MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE); - MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED); - } - - return "UNKNOWN"; -} - -/* Wait until the command is completed */ -static int at76_wait_completion(struct at76_priv *priv, int cmd) -{ - int status = 0; - unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT; - - do { - status = at76_get_cmd_status(priv->udev, cmd); - if (status < 0) { - wiphy_err(priv->hw->wiphy, - "at76_get_cmd_status failed: %d\n", - status); - break; - } - - at76_dbg(DBG_WAIT_COMPLETE, - "%s: Waiting on cmd %d, status = %d (%s)", - wiphy_name(priv->hw->wiphy), cmd, status, - at76_get_cmd_status_string(status)); - - if (status != CMD_STATUS_IN_PROGRESS - && status != CMD_STATUS_IDLE) - break; - - schedule_timeout_interruptible(HZ / 10); /* 100 ms */ - if (time_after(jiffies, timeout)) { - wiphy_err(priv->hw->wiphy, - "completion timeout for command %d\n", cmd); - status = -ETIMEDOUT; - break; - } - } while (1); - - return status; -} - -static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf) -{ - int ret; - - ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf, - offsetof(struct set_mib_buffer, - data) + buf->size); - if (ret < 0) - return ret; - - ret = at76_wait_completion(priv, CMD_SET_MIB); - if (ret != CMD_STATUS_COMPLETE) { - wiphy_info(priv->hw->wiphy, - "set_mib: at76_wait_completion failed with %d\n", - ret); - ret = -EIO; - } - - return ret; -} - -/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */ -static int at76_set_radio(struct at76_priv *priv, int enable) -{ - int ret; - int cmd; - - if (priv->radio_on == enable) - return 0; - - cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF; - - ret = at76_set_card_command(priv->udev, cmd, NULL, 0); - if (ret < 0) - wiphy_err(priv->hw->wiphy, - "at76_set_card_command(%d) failed: %d\n", cmd, ret); - else - ret = 1; - - priv->radio_on = enable; - return ret; -} - -/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */ -static int at76_set_pm_mode(struct at76_priv *priv) -{ - int ret = 0; - - priv->mib_buf.type = MIB_MAC_MGMT; - priv->mib_buf.size = 1; - priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode); - priv->mib_buf.data.byte = priv->pm_mode; - - ret = at76_set_mib(priv, &priv->mib_buf); - if (ret < 0) - wiphy_err(priv->hw->wiphy, "set_mib (pm_mode) failed: %d\n", - ret); - - return ret; -} - -static int at76_set_preamble(struct at76_priv *priv, u8 type) -{ - int ret = 0; - - priv->mib_buf.type = MIB_LOCAL; - priv->mib_buf.size = 1; - priv->mib_buf.index = offsetof(struct mib_local, preamble_type); - priv->mib_buf.data.byte = type; - - ret = at76_set_mib(priv, &priv->mib_buf); - if (ret < 0) - wiphy_err(priv->hw->wiphy, "set_mib (preamble) failed: %d\n", - ret); - - return ret; -} - -static int at76_set_frag(struct at76_priv *priv, u16 size) -{ - int ret = 0; - - priv->mib_buf.type = MIB_MAC; - priv->mib_buf.size = 2; - priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold); - priv->mib_buf.data.word = cpu_to_le16(size); - - ret = at76_set_mib(priv, &priv->mib_buf); - if (ret < 0) - wiphy_err(priv->hw->wiphy, - "set_mib (frag threshold) failed: %d\n", ret); - - return ret; -} - -static int at76_set_rts(struct at76_priv *priv, u16 size) -{ - int ret = 0; - - priv->mib_buf.type = MIB_MAC; - priv->mib_buf.size = 2; - priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold); - priv->mib_buf.data.word = cpu_to_le16(size); - - ret = at76_set_mib(priv, &priv->mib_buf); - if (ret < 0) - wiphy_err(priv->hw->wiphy, "set_mib (rts) failed: %d\n", ret); - - return ret; -} - -static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff) -{ - int ret = 0; - - priv->mib_buf.type = MIB_LOCAL; - priv->mib_buf.size = 1; - priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback); - priv->mib_buf.data.byte = onoff; - - ret = at76_set_mib(priv, &priv->mib_buf); - if (ret < 0) - wiphy_err(priv->hw->wiphy, - "set_mib (autorate fallback) failed: %d\n", ret); - - return ret; -} - -static void at76_dump_mib_mac_addr(struct at76_priv *priv) -{ - int i; - int ret; - struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr), - GFP_KERNEL); - - if (!m) - return; - - ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m, - sizeof(struct mib_mac_addr)); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, - "at76_get_mib (MAC_ADDR) failed: %d\n", ret); - goto exit; - } - - at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x", - wiphy_name(priv->hw->wiphy), - m->mac_addr, m->res[0], m->res[1]); - for (i = 0; i < ARRAY_SIZE(m->group_addr); i++) - at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, " - "status %d", wiphy_name(priv->hw->wiphy), i, - m->group_addr[i], m->group_addr_status[i]); -exit: - kfree(m); -} - -static void at76_dump_mib_mac_wep(struct at76_priv *priv) -{ - int i; - int ret; - int key_len; - struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL); - - if (!m) - return; - - ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m, - sizeof(struct mib_mac_wep)); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, - "at76_get_mib (MAC_WEP) failed: %d\n", ret); - goto exit; - } - - at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u " - "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u " - "encr_level %u key %d", wiphy_name(priv->hw->wiphy), - m->privacy_invoked, m->wep_default_key_id, - m->wep_key_mapping_len, m->exclude_unencrypted, - le32_to_cpu(m->wep_icv_error_count), - le32_to_cpu(m->wep_excluded_count), m->encryption_level, - m->wep_default_key_id); - - key_len = (m->encryption_level == 1) ? - WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN; - - for (i = 0; i < WEP_KEYS; i++) - at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %*phD", - wiphy_name(priv->hw->wiphy), i, - key_len, m->wep_default_keyvalue[i]); -exit: - kfree(m); -} - -static void at76_dump_mib_mac_mgmt(struct at76_priv *priv) -{ - int ret; - struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt), - GFP_KERNEL); - - if (!m) - return; - - ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m, - sizeof(struct mib_mac_mgmt)); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, - "at76_get_mib (MAC_MGMT) failed: %d\n", ret); - goto exit; - } - - at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration " - "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d " - "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d " - "current_bssid %pM current_essid %*phD current_bss_type %d " - "pm_mode %d ibss_change %d res %d " - "multi_domain_capability_implemented %d " - "international_roaming %d country_string %.3s", - wiphy_name(priv->hw->wiphy), le16_to_cpu(m->beacon_period), - le16_to_cpu(m->CFP_max_duration), - le16_to_cpu(m->medium_occupancy_limit), - le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window), - m->CFP_mode, m->privacy_option_implemented, m->DTIM_period, - m->CFP_period, m->current_bssid, - IW_ESSID_MAX_SIZE, m->current_essid, - m->current_bss_type, m->power_mgmt_mode, m->ibss_change, - m->res, m->multi_domain_capability_implemented, - m->multi_domain_capability_enabled, m->country_string); -exit: - kfree(m); -} - -static void at76_dump_mib_mac(struct at76_priv *priv) -{ - int ret; - struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL); - - if (!m) - return; - - ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac)); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, - "at76_get_mib (MAC) failed: %d\n", ret); - goto exit; - } - - at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d " - "max_rx_lifetime %d frag_threshold %d rts_threshold %d " - "cwmin %d cwmax %d short_retry_time %d long_retry_time %d " - "scan_type %d scan_channel %d probe_delay %u " - "min_channel_time %d max_channel_time %d listen_int %d " - "desired_ssid %*phD desired_bssid %pM desired_bsstype %d", - wiphy_name(priv->hw->wiphy), - le32_to_cpu(m->max_tx_msdu_lifetime), - le32_to_cpu(m->max_rx_lifetime), - le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold), - le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax), - m->short_retry_time, m->long_retry_time, m->scan_type, - m->scan_channel, le16_to_cpu(m->probe_delay), - le16_to_cpu(m->min_channel_time), - le16_to_cpu(m->max_channel_time), - le16_to_cpu(m->listen_interval), - IW_ESSID_MAX_SIZE, m->desired_ssid, - m->desired_bssid, m->desired_bsstype); -exit: - kfree(m); -} - -static void at76_dump_mib_phy(struct at76_priv *priv) -{ - int ret; - struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL); - - if (!m) - return; - - ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy)); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, - "at76_get_mib (PHY) failed: %d\n", ret); - goto exit; - } - - at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d " - "sifs_time %d preamble_length %d plcp_header_length %d " - "mpdu_max_length %d cca_mode_supported %d operation_rate_set " - "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d " - "phy_type %d current_reg_domain %d", - wiphy_name(priv->hw->wiphy), le32_to_cpu(m->ed_threshold), - le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time), - le16_to_cpu(m->preamble_length), - le16_to_cpu(m->plcp_header_length), - le16_to_cpu(m->mpdu_max_length), - le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0], - m->operation_rate_set[1], m->operation_rate_set[2], - m->operation_rate_set[3], m->channel_id, m->current_cca_mode, - m->phy_type, m->current_reg_domain); -exit: - kfree(m); -} - -static void at76_dump_mib_local(struct at76_priv *priv) -{ - int ret; - struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL); - - if (!m) - return; - - ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m)); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, - "at76_get_mib (LOCAL) failed: %d\n", ret); - goto exit; - } - - at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d " - "txautorate_fallback %d ssid_size %d promiscuous_mode %d " - "preamble_type %d", wiphy_name(priv->hw->wiphy), - m->beacon_enable, - m->txautorate_fallback, m->ssid_size, m->promiscuous_mode, - m->preamble_type); -exit: - kfree(m); -} - -static void at76_dump_mib_mdomain(struct at76_priv *priv) -{ - int ret; - struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL); - - if (!m) - return; - - ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m, - sizeof(struct mib_mdomain)); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, - "at76_get_mib (MDOMAIN) failed: %d\n", ret); - goto exit; - } - - at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %*phD", - wiphy_name(priv->hw->wiphy), - (int)sizeof(m->channel_list), m->channel_list); - - at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %*phD", - wiphy_name(priv->hw->wiphy), - (int)sizeof(m->tx_powerlevel), m->tx_powerlevel); -exit: - kfree(m); -} - -/* Enable monitor mode */ -static int at76_start_monitor(struct at76_priv *priv) -{ - struct at76_req_scan scan; - int ret; - - memset(&scan, 0, sizeof(struct at76_req_scan)); - eth_broadcast_addr(scan.bssid); - - scan.channel = priv->channel; - scan.scan_type = SCAN_TYPE_PASSIVE; - scan.international_scan = 0; - scan.min_channel_time = cpu_to_le16(priv->scan_min_time); - scan.max_channel_time = cpu_to_le16(priv->scan_max_time); - scan.probe_delay = cpu_to_le16(0); - - ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); - if (ret >= 0) - ret = at76_get_cmd_status(priv->udev, CMD_SCAN); - - return ret; -} - -/* Calculate padding from txbuf->wlength (which excludes the USB TX header), - likely to compensate a flaw in the AT76C503A USB part ... */ -static inline int at76_calc_padding(int wlen) -{ - /* add the USB TX header */ - wlen += AT76_TX_HDRLEN; - - wlen = wlen % 64; - - if (wlen < 50) - return 50 - wlen; - - if (wlen >= 61) - return 64 + 50 - wlen; - - return 0; -} - -static void at76_rx_callback(struct urb *urb) -{ - struct at76_priv *priv = urb->context; - - priv->rx_tasklet.data = (unsigned long)urb; - tasklet_schedule(&priv->rx_tasklet); -} - -static int at76_submit_rx_urb(struct at76_priv *priv) -{ - int ret; - int size; - struct sk_buff *skb = priv->rx_skb; - - if (!priv->rx_urb) { - wiphy_err(priv->hw->wiphy, "%s: priv->rx_urb is NULL\n", - __func__); - return -EFAULT; - } - - if (!skb) { - skb = dev_alloc_skb(sizeof(struct at76_rx_buffer)); - if (!skb) { - wiphy_err(priv->hw->wiphy, - "cannot allocate rx skbuff\n"); - ret = -ENOMEM; - goto exit; - } - priv->rx_skb = skb; - } else { - skb_push(skb, skb_headroom(skb)); - skb_trim(skb, 0); - } - - size = skb_tailroom(skb); - usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe, - skb_put(skb, size), size, at76_rx_callback, priv); - ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC); - if (ret < 0) { - if (ret == -ENODEV) - at76_dbg(DBG_DEVSTART, - "usb_submit_urb returned -ENODEV"); - else - wiphy_err(priv->hw->wiphy, - "rx, usb_submit_urb failed: %d\n", ret); - } - -exit: - if (ret < 0 && ret != -ENODEV) - wiphy_err(priv->hw->wiphy, - "cannot submit rx urb - please unload the driver and/or power cycle the device\n"); - - return ret; -} - -/* Download external firmware */ -static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe) -{ - int ret; - int op_mode; - int blockno = 0; - int bsize; - u8 *block; - u8 *buf = fwe->extfw; - int size = fwe->extfw_size; - - if (!buf || !size) - return -ENOENT; - - op_mode = at76_get_op_mode(udev); - at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); - - if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { - dev_err(&udev->dev, "unexpected opmode %d\n", op_mode); - return -EINVAL; - } - - block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); - if (!block) - return -ENOMEM; - - at76_dbg(DBG_DEVSTART, "downloading external firmware"); - - /* for fw >= 0.100, the device needs an extra empty block */ - do { - bsize = min_t(int, size, FW_BLOCK_SIZE); - memcpy(block, buf, bsize); - at76_dbg(DBG_DEVSTART, - "ext fw, size left = %5d, bsize = %4d, blockno = %2d", - size, bsize, blockno); - ret = at76_load_ext_fw_block(udev, blockno, block, bsize); - if (ret != bsize) { - dev_err(&udev->dev, - "loading %dth firmware block failed: %d\n", - blockno, ret); - ret = -EIO; - goto exit; - } - buf += bsize; - size -= bsize; - blockno++; - } while (bsize > 0); - - if (at76_is_505a(fwe->board_type)) { - at76_dbg(DBG_DEVSTART, "200 ms delay for 505a"); - schedule_timeout_interruptible(HZ / 5 + 1); - } - -exit: - kfree(block); - if (ret < 0) - dev_err(&udev->dev, - "downloading external firmware failed: %d\n", ret); - return ret; -} - -/* Download internal firmware */ -static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe) -{ - int ret; - int need_remap = !at76_is_505a(fwe->board_type); - - ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size, - need_remap ? 0 : 2 * HZ); - - if (ret < 0) { - dev_err(&udev->dev, - "downloading internal fw failed with %d\n", ret); - goto exit; - } - - at76_dbg(DBG_DEVSTART, "sending REMAP"); - - /* no REMAP for 505A (see SF driver) */ - if (need_remap) { - ret = at76_remap(udev); - if (ret < 0) { - dev_err(&udev->dev, - "sending REMAP failed with %d\n", ret); - goto exit; - } - } - - at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds"); - schedule_timeout_interruptible(2 * HZ + 1); - usb_reset_device(udev); - -exit: - return ret; -} - -static int at76_startup_device(struct at76_priv *priv) -{ - struct at76_card_config *ccfg = &priv->card_config; - int ret; - - at76_dbg(DBG_PARAMS, - "%s param: ssid %.*s (%*phD) mode %s ch %d wep %s key %d " - "keylen %d", wiphy_name(priv->hw->wiphy), priv->essid_size, - priv->essid, IW_ESSID_MAX_SIZE, priv->essid, - priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra", - priv->channel, priv->wep_enabled ? "enabled" : "disabled", - priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]); - at76_dbg(DBG_PARAMS, - "%s param: preamble %s rts %d retry %d frag %d " - "txrate %s auth_mode %d", wiphy_name(priv->hw->wiphy), - preambles[priv->preamble_type], priv->rts_threshold, - priv->short_retry_limit, priv->frag_threshold, - priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate == - TX_RATE_2MBIT ? "2MBit" : priv->txrate == - TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate == - TX_RATE_11MBIT ? "11MBit" : priv->txrate == - TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode); - at76_dbg(DBG_PARAMS, - "%s param: pm_mode %d pm_period %d auth_mode %s " - "scan_times %d %d scan_mode %s", - wiphy_name(priv->hw->wiphy), priv->pm_mode, priv->pm_period, - priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret", - priv->scan_min_time, priv->scan_max_time, - priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive"); - - memset(ccfg, 0, sizeof(struct at76_card_config)); - ccfg->promiscuous_mode = 0; - ccfg->short_retry_limit = priv->short_retry_limit; - - if (priv->wep_enabled) { - if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN) - ccfg->encryption_type = 2; - else - ccfg->encryption_type = 1; - - /* jal: always exclude unencrypted if WEP is active */ - ccfg->exclude_unencrypted = 1; - } else { - ccfg->exclude_unencrypted = 0; - ccfg->encryption_type = 0; - } - - ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold); - ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold); - - memcpy(ccfg->basic_rate_set, hw_rates, 4); - /* jal: really needed, we do a set_mib for autorate later ??? */ - ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0); - ccfg->channel = priv->channel; - ccfg->privacy_invoked = priv->wep_enabled; - memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE); - ccfg->ssid_len = priv->essid_size; - - ccfg->wep_default_key_id = priv->wep_key_id; - memcpy(ccfg->wep_default_key_value, priv->wep_keys, - sizeof(priv->wep_keys)); - - ccfg->short_preamble = priv->preamble_type; - ccfg->beacon_period = cpu_to_le16(priv->beacon_period); - - ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config, - sizeof(struct at76_card_config)); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n", - ret); - return ret; - } - - at76_wait_completion(priv, CMD_STARTUP); - - /* remove BSSID from previous run */ - eth_zero_addr(priv->bssid); - - priv->scanning = false; - - if (at76_set_radio(priv, 1) == 1) - at76_wait_completion(priv, CMD_RADIO_ON); - - ret = at76_set_preamble(priv, priv->preamble_type); - if (ret < 0) - return ret; - - ret = at76_set_frag(priv, priv->frag_threshold); - if (ret < 0) - return ret; - - ret = at76_set_rts(priv, priv->rts_threshold); - if (ret < 0) - return ret; - - ret = at76_set_autorate_fallback(priv, - priv->txrate == TX_RATE_AUTO ? 1 : 0); - if (ret < 0) - return ret; - - ret = at76_set_pm_mode(priv); - if (ret < 0) - return ret; - - if (at76_debug & DBG_MIB) { - at76_dump_mib_mac(priv); - at76_dump_mib_mac_addr(priv); - at76_dump_mib_mac_mgmt(priv); - at76_dump_mib_mac_wep(priv); - at76_dump_mib_mdomain(priv); - at76_dump_mib_phy(priv); - at76_dump_mib_local(priv); - } - - return 0; -} - -/* Enable or disable promiscuous mode */ -static void at76_work_set_promisc(struct work_struct *work) -{ - struct at76_priv *priv = container_of(work, struct at76_priv, - work_set_promisc); - int ret = 0; - - if (priv->device_unplugged) - return; - - mutex_lock(&priv->mtx); - - priv->mib_buf.type = MIB_LOCAL; - priv->mib_buf.size = 1; - priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode); - priv->mib_buf.data.byte = priv->promisc ? 1 : 0; - - ret = at76_set_mib(priv, &priv->mib_buf); - if (ret < 0) - wiphy_err(priv->hw->wiphy, - "set_mib (promiscuous_mode) failed: %d\n", ret); - - mutex_unlock(&priv->mtx); -} - -/* Submit Rx urb back to the device */ -static void at76_work_submit_rx(struct work_struct *work) -{ - struct at76_priv *priv = container_of(work, struct at76_priv, - work_submit_rx); - - mutex_lock(&priv->mtx); - at76_submit_rx_urb(priv); - mutex_unlock(&priv->mtx); -} - -/* This is a workaround to make scan working: - * currently mac80211 does not process frames with no frequency - * information. - * However during scan the HW performs a sweep by itself, and we - * are unable to know where the radio is actually tuned. - * This function tries to do its best to guess this information.. - * During scan, If the current frame is a beacon or a probe response, - * the channel information is extracted from it. - * When not scanning, for other frames, or if it happens that for - * whatever reason we fail to parse beacons and probe responses, this - * function returns the priv->channel information, that should be correct - * at least when we are not scanning. - */ -static inline int at76_guess_freq(struct at76_priv *priv) -{ - size_t el_off; - const u8 *el; - int channel = priv->channel; - int len = priv->rx_skb->len; - struct ieee80211_hdr *hdr = (void *)priv->rx_skb->data; - - if (!priv->scanning) - goto exit; - - if (len < 24) - goto exit; - - if (ieee80211_is_probe_resp(hdr->frame_control)) { - el_off = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); - el = ((struct ieee80211_mgmt *)hdr)->u.probe_resp.variable; - } else if (ieee80211_is_beacon(hdr->frame_control)) { - el_off = offsetof(struct ieee80211_mgmt, u.beacon.variable); - el = ((struct ieee80211_mgmt *)hdr)->u.beacon.variable; - } else { - goto exit; - } - len -= el_off; - - el = cfg80211_find_ie(WLAN_EID_DS_PARAMS, el, len); - if (el && el[1] > 0) - channel = el[2]; - -exit: - return ieee80211_channel_to_frequency(channel, IEEE80211_BAND_2GHZ); -} - -static void at76_rx_tasklet(unsigned long param) -{ - struct urb *urb = (struct urb *)param; - struct at76_priv *priv = urb->context; - struct at76_rx_buffer *buf; - struct ieee80211_rx_status rx_status = { 0 }; - - if (priv->device_unplugged) { - at76_dbg(DBG_DEVSTART, "device unplugged"); - at76_dbg(DBG_DEVSTART, "urb status %d", urb->status); - return; - } - - if (!priv->rx_skb || !priv->rx_skb->data) - return; - - buf = (struct at76_rx_buffer *)priv->rx_skb->data; - - if (urb->status != 0) { - if (urb->status != -ENOENT && urb->status != -ECONNRESET) - at76_dbg(DBG_URB, - "%s %s: - nonzero Rx bulk status received: %d", - __func__, wiphy_name(priv->hw->wiphy), - urb->status); - return; - } - - at76_dbg(DBG_RX_ATMEL_HDR, - "%s: rx frame: rate %d rssi %d noise %d link %d", - wiphy_name(priv->hw->wiphy), buf->rx_rate, buf->rssi, - buf->noise_level, buf->link_quality); - - skb_pull(priv->rx_skb, AT76_RX_HDRLEN); - skb_trim(priv->rx_skb, le16_to_cpu(buf->wlength)); - at76_dbg_dump(DBG_RX_DATA, priv->rx_skb->data, - priv->rx_skb->len, "RX: len=%d", priv->rx_skb->len); - - rx_status.signal = buf->rssi; - rx_status.flag |= RX_FLAG_DECRYPTED; - rx_status.flag |= RX_FLAG_IV_STRIPPED; - rx_status.band = IEEE80211_BAND_2GHZ; - rx_status.freq = at76_guess_freq(priv); - - at76_dbg(DBG_MAC80211, "calling ieee80211_rx_irqsafe(): %d/%d", - priv->rx_skb->len, priv->rx_skb->data_len); - memcpy(IEEE80211_SKB_RXCB(priv->rx_skb), &rx_status, sizeof(rx_status)); - ieee80211_rx_irqsafe(priv->hw, priv->rx_skb); - - /* Use a new skb for the next receive */ - priv->rx_skb = NULL; - - at76_submit_rx_urb(priv); -} - -/* Load firmware into kernel memory and parse it */ -static struct fwentry *at76_load_firmware(struct usb_device *udev, - enum board_type board_type) -{ - int ret; - char *str; - struct at76_fw_header *fwh; - struct fwentry *fwe = &firmwares[board_type]; - - mutex_lock(&fw_mutex); - - if (fwe->loaded) { - at76_dbg(DBG_FW, "re-using previously loaded fw"); - goto exit; - } - - at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname); - ret = reject_firmware(&fwe->fw, fwe->fwname, &udev->dev); - if (ret < 0) { - dev_err(&udev->dev, "firmware %s not found!\n", - fwe->fwname); - dev_err(&udev->dev, - "you may need to download the firmware from http://developer.berlios.de/projects/at76c503a/\n"); - goto exit; - } - - at76_dbg(DBG_FW, "got it."); - fwh = (struct at76_fw_header *)(fwe->fw->data); - - if (fwe->fw->size <= sizeof(*fwh)) { - dev_err(&udev->dev, - "firmware is too short (0x%zx)\n", fwe->fw->size); - goto exit; - } - - /* CRC currently not checked */ - fwe->board_type = le32_to_cpu(fwh->board_type); - if (fwe->board_type != board_type) { - dev_err(&udev->dev, - "board type mismatch, requested %u, got %u\n", - board_type, fwe->board_type); - goto exit; - } - - fwe->fw_version.major = fwh->major; - fwe->fw_version.minor = fwh->minor; - fwe->fw_version.patch = fwh->patch; - fwe->fw_version.build = fwh->build; - - str = (char *)fwh + le32_to_cpu(fwh->str_offset); - fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset); - fwe->intfw_size = le32_to_cpu(fwh->int_fw_len); - fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset); - fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len); - - fwe->loaded = 1; - - dev_printk(KERN_DEBUG, &udev->dev, - "using firmware %s (version %d.%d.%d-%d)\n", - fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build); - - at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type, - le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len), - le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len)); - at76_dbg(DBG_DEVSTART, "firmware id %s", str); - -exit: - mutex_unlock(&fw_mutex); - - if (fwe->loaded) - return fwe; - else - return NULL; -} - -static int at76_join(struct at76_priv *priv) -{ - struct at76_req_join join; - int ret; - - memset(&join, 0, sizeof(struct at76_req_join)); - memcpy(join.essid, priv->essid, priv->essid_size); - join.essid_size = priv->essid_size; - memcpy(join.bssid, priv->bssid, ETH_ALEN); - join.bss_type = INFRASTRUCTURE_MODE; - join.channel = priv->channel; - join.timeout = cpu_to_le16(2000); - - at76_dbg(DBG_MAC80211, "%s: sending CMD_JOIN", __func__); - ret = at76_set_card_command(priv->udev, CMD_JOIN, &join, - sizeof(struct at76_req_join)); - - if (ret < 0) { - wiphy_err(priv->hw->wiphy, "at76_set_card_command failed: %d\n", - ret); - return 0; - } - - ret = at76_wait_completion(priv, CMD_JOIN); - at76_dbg(DBG_MAC80211, "%s: CMD_JOIN returned: 0x%02x", __func__, ret); - if (ret != CMD_STATUS_COMPLETE) { - wiphy_err(priv->hw->wiphy, "at76_wait_completion failed: %d\n", - ret); - return 0; - } - - at76_set_pm_mode(priv); - - return 0; -} - -static void at76_work_join_bssid(struct work_struct *work) -{ - struct at76_priv *priv = container_of(work, struct at76_priv, - work_join_bssid); - - if (priv->device_unplugged) - return; - - mutex_lock(&priv->mtx); - - if (is_valid_ether_addr(priv->bssid)) - at76_join(priv); - - mutex_unlock(&priv->mtx); -} - -static void at76_mac80211_tx_callback(struct urb *urb) -{ - struct at76_priv *priv = urb->context; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); - - at76_dbg(DBG_MAC80211, "%s()", __func__); - - switch (urb->status) { - case 0: - /* success */ - info->flags |= IEEE80211_TX_STAT_ACK; - break; - case -ENOENT: - case -ECONNRESET: - /* fail, urb has been unlinked */ - /* FIXME: add error message */ - break; - default: - at76_dbg(DBG_URB, "%s - nonzero tx status received: %d", - __func__, urb->status); - break; - } - - memset(&info->status, 0, sizeof(info->status)); - - ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); - - priv->tx_skb = NULL; - - ieee80211_wake_queues(priv->hw); -} - -static void at76_mac80211_tx(struct ieee80211_hw *hw, - struct ieee80211_tx_control *control, - struct sk_buff *skb) -{ - struct at76_priv *priv = hw->priv; - struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; - int padding, submit_len, ret; - - at76_dbg(DBG_MAC80211, "%s()", __func__); - - if (priv->tx_urb->status == -EINPROGRESS) { - wiphy_err(priv->hw->wiphy, - "%s called while tx urb is pending\n", __func__); - dev_kfree_skb_any(skb); - return; - } - - /* The following code lines are important when the device is going to - * authenticate with a new bssid. The driver must send CMD_JOIN before - * an authentication frame is transmitted. For this to succeed, the - * correct bssid of the AP must be known. As mac80211 does not inform - * drivers about the bssid prior to the authentication process the - * following workaround is necessary. If the TX frame is an - * authentication frame extract the bssid and send the CMD_JOIN. */ - if (mgmt->frame_control & cpu_to_le16(IEEE80211_STYPE_AUTH)) { - if (!ether_addr_equal_64bits(priv->bssid, mgmt->bssid)) { - memcpy(priv->bssid, mgmt->bssid, ETH_ALEN); - ieee80211_queue_work(hw, &priv->work_join_bssid); - dev_kfree_skb_any(skb); - return; - } - } - - ieee80211_stop_queues(hw); - - at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */ - - WARN_ON(priv->tx_skb != NULL); - - priv->tx_skb = skb; - padding = at76_calc_padding(skb->len); - submit_len = AT76_TX_HDRLEN + skb->len + padding; - - /* setup 'Atmel' header */ - memset(tx_buffer, 0, sizeof(*tx_buffer)); - tx_buffer->padding = padding; - tx_buffer->wlength = cpu_to_le16(skb->len); - tx_buffer->tx_rate = ieee80211_get_tx_rate(hw, info)->hw_value; - memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved)); - memcpy(tx_buffer->packet, skb->data, skb->len); - - at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr", - wiphy_name(priv->hw->wiphy), le16_to_cpu(tx_buffer->wlength), - tx_buffer->padding, tx_buffer->tx_rate); - - /* send stuff */ - at76_dbg_dump(DBG_TX_DATA_CONTENT, tx_buffer, submit_len, - "%s(): tx_buffer %d bytes:", __func__, submit_len); - usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer, - submit_len, at76_mac80211_tx_callback, priv); - ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC); - if (ret) { - wiphy_err(priv->hw->wiphy, "error in tx submit urb: %d\n", ret); - if (ret == -EINVAL) - wiphy_err(priv->hw->wiphy, - "-EINVAL: tx urb %p hcpriv %p complete %p\n", - priv->tx_urb, - priv->tx_urb->hcpriv, priv->tx_urb->complete); - } -} - -static int at76_mac80211_start(struct ieee80211_hw *hw) -{ - struct at76_priv *priv = hw->priv; - int ret; - - at76_dbg(DBG_MAC80211, "%s()", __func__); - - mutex_lock(&priv->mtx); - - ret = at76_submit_rx_urb(priv); - if (ret < 0) { - wiphy_err(priv->hw->wiphy, "open: submit_rx_urb failed: %d\n", - ret); - goto error; - } - - at76_startup_device(priv); - - at76_start_monitor(priv); - -error: - mutex_unlock(&priv->mtx); - - return 0; -} - -static void at76_mac80211_stop(struct ieee80211_hw *hw) -{ - struct at76_priv *priv = hw->priv; - - at76_dbg(DBG_MAC80211, "%s()", __func__); - - cancel_delayed_work(&priv->dwork_hw_scan); - cancel_work_sync(&priv->work_join_bssid); - cancel_work_sync(&priv->work_set_promisc); - - mutex_lock(&priv->mtx); - - if (!priv->device_unplugged) { - /* We are called by "ifconfig ethX down", not because the - * device is not available anymore. */ - at76_set_radio(priv, 0); - - /* We unlink rx_urb because at76_open() re-submits it. - * If unplugged, at76_delete_device() takes care of it. */ - usb_kill_urb(priv->rx_urb); - } - - mutex_unlock(&priv->mtx); -} - -static int at76_add_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif) -{ - struct at76_priv *priv = hw->priv; - int ret = 0; - - at76_dbg(DBG_MAC80211, "%s()", __func__); - - mutex_lock(&priv->mtx); - - switch (vif->type) { - case NL80211_IFTYPE_STATION: - priv->iw_mode = IW_MODE_INFRA; - break; - default: - ret = -EOPNOTSUPP; - goto exit; - } - -exit: - mutex_unlock(&priv->mtx); - - return ret; -} - -static void at76_remove_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif) -{ - at76_dbg(DBG_MAC80211, "%s()", __func__); -} - -static void at76_dwork_hw_scan(struct work_struct *work) -{ - struct at76_priv *priv = container_of(work, struct at76_priv, - dwork_hw_scan.work); - int ret; - - if (priv->device_unplugged) - return; - - mutex_lock(&priv->mtx); - - ret = at76_get_cmd_status(priv->udev, CMD_SCAN); - at76_dbg(DBG_MAC80211, "%s: CMD_SCAN status 0x%02x", __func__, ret); - - /* FIXME: add maximum time for scan to complete */ - - if (ret != CMD_STATUS_COMPLETE) { - ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan, - SCAN_POLL_INTERVAL); - mutex_unlock(&priv->mtx); - return; - } - - if (is_valid_ether_addr(priv->bssid)) - at76_join(priv); - - priv->scanning = false; - - mutex_unlock(&priv->mtx); - - ieee80211_scan_completed(priv->hw, false); - - ieee80211_wake_queues(priv->hw); -} - -static int at76_hw_scan(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_scan_request *hw_req) -{ - struct cfg80211_scan_request *req = &hw_req->req; - struct at76_priv *priv = hw->priv; - struct at76_req_scan scan; - u8 *ssid = NULL; - int ret, len = 0; - - at76_dbg(DBG_MAC80211, "%s():", __func__); - - if (priv->device_unplugged) - return 0; - - mutex_lock(&priv->mtx); - - ieee80211_stop_queues(hw); - - memset(&scan, 0, sizeof(struct at76_req_scan)); - eth_broadcast_addr(scan.bssid); - - if (req->n_ssids) { - scan.scan_type = SCAN_TYPE_ACTIVE; - ssid = req->ssids[0].ssid; - len = req->ssids[0].ssid_len; - } else { - scan.scan_type = SCAN_TYPE_PASSIVE; - } - - if (len) { - memcpy(scan.essid, ssid, len); - scan.essid_size = len; - } - - scan.min_channel_time = cpu_to_le16(priv->scan_min_time); - scan.max_channel_time = cpu_to_le16(priv->scan_max_time); - scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000); - scan.international_scan = 0; - - at76_dbg(DBG_MAC80211, "%s: sending CMD_SCAN", __func__); - ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); - - if (ret < 0) { - wiphy_err(priv->hw->wiphy, "CMD_SCAN failed: %d\n", ret); - goto exit; - } - - priv->scanning = true; - ieee80211_queue_delayed_work(priv->hw, &priv->dwork_hw_scan, - SCAN_POLL_INTERVAL); - -exit: - mutex_unlock(&priv->mtx); - - return 0; -} - -static int at76_config(struct ieee80211_hw *hw, u32 changed) -{ - struct at76_priv *priv = hw->priv; - - at76_dbg(DBG_MAC80211, "%s(): channel %d", - __func__, hw->conf.chandef.chan->hw_value); - at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:"); - - mutex_lock(&priv->mtx); - - priv->channel = hw->conf.chandef.chan->hw_value; - - if (is_valid_ether_addr(priv->bssid)) - at76_join(priv); - else - at76_start_monitor(priv); - - mutex_unlock(&priv->mtx); - - return 0; -} - -static void at76_bss_info_changed(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_bss_conf *conf, - u32 changed) -{ - struct at76_priv *priv = hw->priv; - - at76_dbg(DBG_MAC80211, "%s():", __func__); - - if (!(changed & BSS_CHANGED_BSSID)) - return; - - at76_dbg_dump(DBG_MAC80211, conf->bssid, ETH_ALEN, "bssid:"); - - mutex_lock(&priv->mtx); - - memcpy(priv->bssid, conf->bssid, ETH_ALEN); - - if (is_valid_ether_addr(priv->bssid)) - /* mac80211 is joining a bss */ - at76_join(priv); - - mutex_unlock(&priv->mtx); -} - -/* must be atomic */ -static void at76_configure_filter(struct ieee80211_hw *hw, - unsigned int changed_flags, - unsigned int *total_flags, u64 multicast) -{ - struct at76_priv *priv = hw->priv; - int flags; - - at76_dbg(DBG_MAC80211, "%s(): changed_flags=0x%08x " - "total_flags=0x%08x", - __func__, changed_flags, *total_flags); - - flags = changed_flags & AT76_SUPPORTED_FILTERS; - *total_flags = AT76_SUPPORTED_FILTERS; - - /* Bail out after updating flags to prevent a WARN_ON in mac80211. */ - if (priv->device_unplugged) - return; - - /* FIXME: access to priv->promisc should be protected with - * priv->mtx, but it's impossible because this function needs to be - * atomic */ - - if (flags && !priv->promisc) { - /* mac80211 wants us to enable promiscuous mode */ - priv->promisc = 1; - } else if (!flags && priv->promisc) { - /* we need to disable promiscuous mode */ - priv->promisc = 0; - } else - return; - - ieee80211_queue_work(hw, &priv->work_set_promisc); -} - -static int at76_set_wep(struct at76_priv *priv) -{ - int ret = 0; - struct mib_mac_wep *mib_data = &priv->mib_buf.data.wep_mib; - - priv->mib_buf.type = MIB_MAC_WEP; - priv->mib_buf.size = sizeof(struct mib_mac_wep); - priv->mib_buf.index = 0; - - memset(mib_data, 0, sizeof(*mib_data)); - - if (priv->wep_enabled) { - if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN) - mib_data->encryption_level = 2; - else - mib_data->encryption_level = 1; - - /* always exclude unencrypted if WEP is active */ - mib_data->exclude_unencrypted = 1; - } else { - mib_data->exclude_unencrypted = 0; - mib_data->encryption_level = 0; - } - - mib_data->privacy_invoked = priv->wep_enabled; - mib_data->wep_default_key_id = priv->wep_key_id; - memcpy(mib_data->wep_default_keyvalue, priv->wep_keys, - sizeof(priv->wep_keys)); - - ret = at76_set_mib(priv, &priv->mib_buf); - - if (ret < 0) - wiphy_err(priv->hw->wiphy, - "set_mib (wep) failed: %d\n", ret); - - return ret; -} - -static int at76_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, - struct ieee80211_vif *vif, struct ieee80211_sta *sta, - struct ieee80211_key_conf *key) -{ - struct at76_priv *priv = hw->priv; - - int i; - - at76_dbg(DBG_MAC80211, "%s(): cmd %d key->cipher %d key->keyidx %d " - "key->keylen %d", - __func__, cmd, key->cipher, key->keyidx, key->keylen); - - if ((key->cipher != WLAN_CIPHER_SUITE_WEP40) && - (key->cipher != WLAN_CIPHER_SUITE_WEP104)) - return -EOPNOTSUPP; - - key->hw_key_idx = key->keyidx; - - mutex_lock(&priv->mtx); - - switch (cmd) { - case SET_KEY: - memcpy(priv->wep_keys[key->keyidx], key->key, key->keylen); - priv->wep_keys_len[key->keyidx] = key->keylen; - - /* FIXME: find out how to do this properly */ - priv->wep_key_id = key->keyidx; - - break; - case DISABLE_KEY: - default: - priv->wep_keys_len[key->keyidx] = 0; - break; - } - - priv->wep_enabled = 0; - - for (i = 0; i < WEP_KEYS; i++) { - if (priv->wep_keys_len[i] != 0) - priv->wep_enabled = 1; - } - - at76_set_wep(priv); - - mutex_unlock(&priv->mtx); - - return 0; -} - -static const struct ieee80211_ops at76_ops = { - .tx = at76_mac80211_tx, - .add_interface = at76_add_interface, - .remove_interface = at76_remove_interface, - .config = at76_config, - .bss_info_changed = at76_bss_info_changed, - .configure_filter = at76_configure_filter, - .start = at76_mac80211_start, - .stop = at76_mac80211_stop, - .hw_scan = at76_hw_scan, - .set_key = at76_set_key, -}; - -/* Allocate network device and initialize private data */ -static struct at76_priv *at76_alloc_new_device(struct usb_device *udev) -{ - struct ieee80211_hw *hw; - struct at76_priv *priv; - - hw = ieee80211_alloc_hw(sizeof(struct at76_priv), &at76_ops); - if (!hw) { - printk(KERN_ERR DRIVER_NAME ": could not register" - " ieee80211_hw\n"); - return NULL; - } - - priv = hw->priv; - priv->hw = hw; - - priv->udev = udev; - - mutex_init(&priv->mtx); - INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc); - INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx); - INIT_WORK(&priv->work_join_bssid, at76_work_join_bssid); - INIT_DELAYED_WORK(&priv->dwork_hw_scan, at76_dwork_hw_scan); - - tasklet_init(&priv->rx_tasklet, at76_rx_tasklet, 0); - - priv->pm_mode = AT76_PM_OFF; - priv->pm_period = 0; - - /* unit us */ - - return priv; -} - -static int at76_alloc_urbs(struct at76_priv *priv, - struct usb_interface *interface) -{ - struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out; - int i; - int buffer_size; - struct usb_host_interface *iface_desc; - - at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); - - at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__, - interface->altsetting[0].desc.bNumEndpoints); - - ep_in = NULL; - ep_out = NULL; - iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { - endpoint = &iface_desc->endpoint[i].desc; - - at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x", - __func__, i, endpoint->bEndpointAddress, - endpoint->bmAttributes); - - if (!ep_in && usb_endpoint_is_bulk_in(endpoint)) - ep_in = endpoint; - - if (!ep_out && usb_endpoint_is_bulk_out(endpoint)) - ep_out = endpoint; - } - - if (!ep_in || !ep_out) { - dev_err(&interface->dev, "bulk endpoints missing\n"); - return -ENXIO; - } - - priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress); - priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress); - - priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL); - priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!priv->rx_urb || !priv->tx_urb) { - dev_err(&interface->dev, "cannot allocate URB\n"); - return -ENOMEM; - } - - buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE; - priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!priv->bulk_out_buffer) - return -ENOMEM; - - at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); - - return 0; -} - -static struct ieee80211_rate at76_rates[] = { - { .bitrate = 10, .hw_value = TX_RATE_1MBIT, }, - { .bitrate = 20, .hw_value = TX_RATE_2MBIT, }, - { .bitrate = 55, .hw_value = TX_RATE_5_5MBIT, }, - { .bitrate = 110, .hw_value = TX_RATE_11MBIT, }, -}; - -static struct ieee80211_channel at76_channels[] = { - { .center_freq = 2412, .hw_value = 1 }, - { .center_freq = 2417, .hw_value = 2 }, - { .center_freq = 2422, .hw_value = 3 }, - { .center_freq = 2427, .hw_value = 4 }, - { .center_freq = 2432, .hw_value = 5 }, - { .center_freq = 2437, .hw_value = 6 }, - { .center_freq = 2442, .hw_value = 7 }, - { .center_freq = 2447, .hw_value = 8 }, - { .center_freq = 2452, .hw_value = 9 }, - { .center_freq = 2457, .hw_value = 10 }, - { .center_freq = 2462, .hw_value = 11 }, - { .center_freq = 2467, .hw_value = 12 }, - { .center_freq = 2472, .hw_value = 13 }, - { .center_freq = 2484, .hw_value = 14 } -}; - -static struct ieee80211_supported_band at76_supported_band = { - .channels = at76_channels, - .n_channels = ARRAY_SIZE(at76_channels), - .bitrates = at76_rates, - .n_bitrates = ARRAY_SIZE(at76_rates), -}; - -/* Register network device and initialize the hardware */ -static int at76_init_new_device(struct at76_priv *priv, - struct usb_interface *interface) -{ - struct wiphy *wiphy; - size_t len; - int ret; - - /* set up the endpoint information */ - /* check out the endpoints */ - - at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints", - interface->cur_altsetting->desc.bNumEndpoints); - - ret = at76_alloc_urbs(priv, interface); - if (ret < 0) - goto exit; - - /* MAC address */ - ret = at76_get_hw_config(priv); - if (ret < 0) { - dev_err(&interface->dev, "cannot get MAC address\n"); - goto exit; - } - - priv->domain = at76_get_reg_domain(priv->regulatory_domain); - - priv->channel = DEF_CHANNEL; - priv->iw_mode = IW_MODE_INFRA; - priv->rts_threshold = DEF_RTS_THRESHOLD; - priv->frag_threshold = DEF_FRAG_THRESHOLD; - priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT; - priv->txrate = TX_RATE_AUTO; - priv->preamble_type = PREAMBLE_TYPE_LONG; - priv->beacon_period = 100; - priv->auth_mode = WLAN_AUTH_OPEN; - priv->scan_min_time = DEF_SCAN_MIN_TIME; - priv->scan_max_time = DEF_SCAN_MAX_TIME; - priv->scan_mode = SCAN_TYPE_ACTIVE; - priv->device_unplugged = 0; - - /* mac80211 initialisation */ - wiphy = priv->hw->wiphy; - priv->hw->wiphy->max_scan_ssids = 1; - priv->hw->wiphy->max_scan_ie_len = 0; - priv->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); - priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &at76_supported_band; - ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS); - ieee80211_hw_set(priv->hw, SIGNAL_UNSPEC); - priv->hw->max_signal = 100; - - SET_IEEE80211_DEV(priv->hw, &interface->dev); - SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); - - len = sizeof(wiphy->fw_version); - snprintf(wiphy->fw_version, len, "%d.%d.%d-%d", - priv->fw_version.major, priv->fw_version.minor, - priv->fw_version.patch, priv->fw_version.build); - - wiphy->hw_version = priv->board_type; - - ret = ieee80211_register_hw(priv->hw); - if (ret) { - printk(KERN_ERR "cannot register mac80211 hw (status %d)!\n", - ret); - goto exit; - } - - priv->mac80211_registered = 1; - - wiphy_info(priv->hw->wiphy, "USB %s, MAC %pM, firmware %d.%d.%d-%d\n", - dev_name(&interface->dev), priv->mac_addr, - priv->fw_version.major, priv->fw_version.minor, - priv->fw_version.patch, priv->fw_version.build); - wiphy_info(priv->hw->wiphy, "regulatory domain 0x%02x: %s\n", - priv->regulatory_domain, priv->domain->name); - -exit: - return ret; -} - -static void at76_delete_device(struct at76_priv *priv) -{ - at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); - - /* The device is gone, don't bother turning it off */ - priv->device_unplugged = 1; - - tasklet_kill(&priv->rx_tasklet); - - if (priv->mac80211_registered) - ieee80211_unregister_hw(priv->hw); - - if (priv->tx_urb) { - usb_kill_urb(priv->tx_urb); - usb_free_urb(priv->tx_urb); - } - if (priv->rx_urb) { - usb_kill_urb(priv->rx_urb); - usb_free_urb(priv->rx_urb); - } - - at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__); - - kfree(priv->bulk_out_buffer); - - del_timer_sync(&ledtrig_tx_timer); - - kfree_skb(priv->rx_skb); - - at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/ieee80211_hw", - __func__); - ieee80211_free_hw(priv->hw); - - at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); -} - -static int at76_probe(struct usb_interface *interface, - const struct usb_device_id *id) -{ - int ret; - struct at76_priv *priv; - struct fwentry *fwe; - struct usb_device *udev; - int op_mode; - int need_ext_fw = 0; - struct mib_fw_version *fwv = NULL; - int board_type = (int)id->driver_info; - - udev = usb_get_dev(interface_to_usbdev(interface)); - - fwv = kmalloc(sizeof(*fwv), GFP_KERNEL); - if (!fwv) { - ret = -ENOMEM; - goto exit; - } - - /* Load firmware into kernel memory */ - fwe = at76_load_firmware(udev, board_type); - if (!fwe) { - ret = -ENOENT; - goto exit; - } - - op_mode = at76_get_op_mode(udev); - - at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); - - /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ??? - we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */ - - if (op_mode == OPMODE_HW_CONFIG_MODE) { - dev_err(&interface->dev, - "cannot handle a device in HW_CONFIG_MODE\n"); - ret = -EBUSY; - goto exit; - } - - if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH - && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { - /* download internal firmware part */ - dev_printk(KERN_DEBUG, &interface->dev, - "downloading internal firmware\n"); - ret = at76_load_internal_fw(udev, fwe); - if (ret < 0) { - dev_err(&interface->dev, - "error %d downloading internal firmware\n", - ret); - goto exit; - } - usb_put_dev(udev); - goto exit; - } - - /* Internal firmware already inside the device. Get firmware - * version to test if external firmware is loaded. - * This works only for newer firmware, e.g. the Intersil 0.90.x - * says "control timeout on ep0in" and subsequent - * at76_get_op_mode() fail too :-( */ - - /* if version >= 0.100.x.y or device with built-in flash we can - * query the device for the fw version */ - if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100) - || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) { - ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv)); - if (ret < 0 || (fwv->major | fwv->minor) == 0) - need_ext_fw = 1; - } else - /* No way to check firmware version, reload to be sure */ - need_ext_fw = 1; - - if (need_ext_fw) { - dev_printk(KERN_DEBUG, &interface->dev, - "downloading external firmware\n"); - - ret = at76_load_external_fw(udev, fwe); - if (ret < 0) - goto exit; - - /* Re-check firmware version */ - ret = at76_get_mib(udev, MIB_FW_VERSION, fwv, sizeof(*fwv)); - if (ret < 0) { - dev_err(&interface->dev, - "error %d getting firmware version\n", ret); - goto exit; - } - } - - priv = at76_alloc_new_device(udev); - if (!priv) { - ret = -ENOMEM; - goto exit; - } - - usb_set_intfdata(interface, priv); - - memcpy(&priv->fw_version, fwv, sizeof(struct mib_fw_version)); - priv->board_type = board_type; - - ret = at76_init_new_device(priv, interface); - if (ret < 0) - at76_delete_device(priv); - -exit: - kfree(fwv); - if (ret < 0) - usb_put_dev(udev); - return ret; -} - -static void at76_disconnect(struct usb_interface *interface) -{ - struct at76_priv *priv; - - priv = usb_get_intfdata(interface); - usb_set_intfdata(interface, NULL); - - /* Disconnect after loading internal firmware */ - if (!priv) - return; - - wiphy_info(priv->hw->wiphy, "disconnecting\n"); - at76_delete_device(priv); - usb_put_dev(priv->udev); - dev_info(&interface->dev, "disconnected\n"); -} - -/* Structure for registering this driver with the USB subsystem */ -static struct usb_driver at76_driver = { - .name = DRIVER_NAME, - .probe = at76_probe, - .disconnect = at76_disconnect, - .id_table = dev_table, - .disable_hub_initiated_lpm = 1, -}; - -static int __init at76_mod_init(void) -{ - int result; - - printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n"); - - mutex_init(&fw_mutex); - - /* register this driver with the USB subsystem */ - result = usb_register(&at76_driver); - if (result < 0) - printk(KERN_ERR DRIVER_NAME - ": usb_register failed (status %d)\n", result); - - led_trigger_register_simple("at76_usb-tx", &ledtrig_tx); - return result; -} - -static void __exit at76_mod_exit(void) -{ - int i; - - printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n"); - usb_deregister(&at76_driver); - for (i = 0; i < ARRAY_SIZE(firmwares); i++) - release_firmware(firmwares[i].fw); - led_trigger_unregister_simple(ledtrig_tx); -} - -module_param_named(debug, at76_debug, uint, 0600); -MODULE_PARM_DESC(debug, "Debugging level"); - -module_init(at76_mod_init); -module_exit(at76_mod_exit); - -MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>"); -MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>"); -MODULE_AUTHOR("Alex <alex@foogod.com>"); -MODULE_AUTHOR("Nick Jones"); -MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>"); -MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>"); -MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>"); -MODULE_AUTHOR("Kalle Valo <kalle.valo@iki.fi>"); -MODULE_AUTHOR("Sebastian Smolorz <sesmo@gmx.net>"); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); |