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Diffstat (limited to 'drivers/net/wireless/atmel/at76c50x-usb.c')
-rw-r--r--drivers/net/wireless/atmel/at76c50x-usb.c2614
1 files changed, 2614 insertions, 0 deletions
diff --git a/drivers/net/wireless/atmel/at76c50x-usb.c b/drivers/net/wireless/atmel/at76c50x-usb.c
new file mode 100644
index 000000000..404257800
--- /dev/null
+++ b/drivers/net/wireless/atmel/at76c50x-usb.c
@@ -0,0 +1,2614 @@
+// 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 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:
+ *
+ * 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 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 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 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...");
+ 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,
+ 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_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");
+
+ 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);
+ 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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 19:07:33 +0000