| /* |
| * 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] = { "atmel_at76c503-i3861.bin" }, |
| [BOARD_503_ISL3863] = { "atmel_at76c503-i3863.bin" }, |
| [BOARD_503] = { "atmel_at76c503-rfmd.bin" }, |
| [BOARD_503_ACC] = { "atmel_at76c503-rfmd-acc.bin" }, |
| [BOARD_505] = { "atmel_at76c505-rfmd.bin" }, |
| [BOARD_505_2958] = { "atmel_at76c505-rfmd2958.bin" }, |
| [BOARD_505A] = { "atmel_at76c505a-rfmd2958.bin" }, |
| [BOARD_505AMX] = { "atmel_at76c505amx-rfmd.bin" }, |
| }; |
| MODULE_FIRMWARE("atmel_at76c503-i3861.bin"); |
| MODULE_FIRMWARE("atmel_at76c503-i3863.bin"); |
| MODULE_FIRMWARE("atmel_at76c503-rfmd.bin"); |
| MODULE_FIRMWARE("atmel_at76c503-rfmd-acc.bin"); |
| MODULE_FIRMWARE("atmel_at76c505-rfmd.bin"); |
| MODULE_FIRMWARE("atmel_at76c505-rfmd2958.bin"); |
| MODULE_FIRMWARE("atmel_at76c505a-rfmd2958.bin"); |
| MODULE_FIRMWARE("atmel_at76c505amx-rfmd.bin"); |
| |
| #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 = request_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, |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0)) |
| .disable_hub_initiated_lpm = 1, |
| #endif |
| }; |
| |
| 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"); |