| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Kalle Valo | 11225 | 87.78% | 3 | 4.55% |
| Andrea Merello | 564 | 4.41% | 3 | 4.55% |
| Sebastian Smolorz | 309 | 2.42% | 2 | 3.03% |
| Jason Andryuk | 225 | 1.76% | 7 | 10.61% |
| Joe Perches | 125 | 0.98% | 6 | 9.09% |
| Johannes Berg | 106 | 0.83% | 13 | 19.70% |
| Ben Hutchings | 40 | 0.31% | 1 | 1.52% |
| Andy Shevchenko | 24 | 0.19% | 1 | 1.52% |
| John W. Linville | 23 | 0.18% | 2 | 3.03% |
| Allen Pais | 19 | 0.15% | 1 | 1.52% |
| Luis R. Rodriguez | 19 | 0.15% | 3 | 4.55% |
| Avraham Stern | 13 | 0.10% | 2 | 3.03% |
| David Spinadel | 12 | 0.09% | 1 | 1.52% |
| Jamie Lentin | 11 | 0.09% | 1 | 1.52% |
| Kees Cook | 8 | 0.06% | 1 | 1.52% |
| Alexey Khoroshilov | 7 | 0.05% | 1 | 1.52% |
| Andrzej Zaborowski | 7 | 0.05% | 1 | 1.52% |
| Karl Beldan | 6 | 0.05% | 1 | 1.52% |
| Christian Lamparter | 6 | 0.05% | 1 | 1.52% |
| Thomas Huehn | 5 | 0.04% | 1 | 1.52% |
| Dan Carpenter | 5 | 0.04% | 2 | 3.03% |
| Alexander Wetzel | 5 | 0.04% | 1 | 1.52% |
| Sage Sharp | 5 | 0.04% | 1 | 1.52% |
| Alan Stern | 4 | 0.03% | 1 | 1.52% |
| Zheng Yongjun | 4 | 0.03% | 1 | 1.52% |
| Gustavo A. R. Silva | 2 | 0.02% | 1 | 1.52% |
| Johan Hovold | 2 | 0.02% | 1 | 1.52% |
| Greg Kroah-Hartman | 2 | 0.02% | 1 | 1.52% |
| Arvind Yadav | 1 | 0.01% | 1 | 1.52% |
| Yue haibing | 1 | 0.01% | 1 | 1.52% |
| Julia Lawall | 1 | 0.01% | 1 | 1.52% |
| Thomas Gleixner | 1 | 0.01% | 1 | 1.52% |
| Eric Dumazet | 1 | 0.01% | 1 | 1.52% |
| Total | 12788 | 66 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * 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 file is part of the Berlios driver for USB WLAN 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: * * https://wireless.wiki.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 DEFINE_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 const 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 USB Wireless 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 USB WLAN 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 USB WLAN 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..."); fallthrough; 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(struct timer_list *unused); static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc); DEFINE_LED_TRIGGER(ledtrig_tx); static void at76_ledtrig_tx_timerfunc(struct timer_list *unused) { 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; 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, NL80211_BAND_2GHZ); } static void at76_rx_tasklet(struct tasklet_struct *t) { struct at76_priv *priv = from_tasklet(priv, t, rx_tasklet); struct urb *urb = priv->rx_urb; 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 = NL80211_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); struct cfg80211_scan_info info = { .aborted = false, }; 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, &info); 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, u64 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 = { .add_chanctx = ieee80211_emulate_add_chanctx, .remove_chanctx = ieee80211_emulate_remove_chanctx, .change_chanctx = ieee80211_emulate_change_chanctx, .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, .tx = at76_mac80211_tx, .wake_tx_queue = ieee80211_handle_wake_tx_queue, .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_setup(&priv->rx_tasklet, at76_rx_tasklet); 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->cur_altsetting->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[NL80211_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; wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 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; } /* 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"); /* 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); else 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");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1