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1/*2 * Copyright (c) 2006 Damien Bergamini <damien.bergamini@free.fr>3 * Copyright (c) 2006 Sam Leffler, Errno Consulting4 * Copyright (c) 2007 Christoph Hellwig <hch@lst.de>5 * Copyright (c) 2008-2009 Weongyo Jeong <weongyo@freebsd.org>6 * Copyright (c) 2012 Pontus Fuchs <pontus.fuchs@gmail.com>7 *8 * Permission to use, copy, modify, and/or distribute this software for any9 * purpose with or without fee is hereby granted, provided that the above10 * copyright notice and this permission notice appear in all copies.11 *12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.19 */20 21#define AR5523_FLAG_PRE_FIRMWARE (1 << 0)22#define AR5523_FLAG_ABG (1 << 1)23 24#define AR5523_FIRMWARE_FILE "ar5523.bin"25 26#define AR5523_CMD_TX_PIPE 0x0127#define AR5523_DATA_TX_PIPE 0x0228#define AR5523_CMD_RX_PIPE 0x8129#define AR5523_DATA_RX_PIPE 0x8230 31#define ar5523_cmd_tx_pipe(dev) \32 usb_sndbulkpipe((dev), AR5523_CMD_TX_PIPE)33#define ar5523_data_tx_pipe(dev) \34 usb_sndbulkpipe((dev), AR5523_DATA_TX_PIPE)35#define ar5523_cmd_rx_pipe(dev) \36 usb_rcvbulkpipe((dev), AR5523_CMD_RX_PIPE)37#define ar5523_data_rx_pipe(dev) \38 usb_rcvbulkpipe((dev), AR5523_DATA_RX_PIPE)39 40#define AR5523_DATA_TIMEOUT 1000041#define AR5523_CMD_TIMEOUT 100042 43#define AR5523_TX_DATA_COUNT 844#define AR5523_TX_DATA_RESTART_COUNT 245#define AR5523_RX_DATA_COUNT 1646#define AR5523_RX_DATA_REFILL_COUNT 847 48#define AR5523_CMD_ID 149#define AR5523_DATA_ID 250 51#define AR5523_TX_WD_TIMEOUT (HZ * 2)52#define AR5523_FLUSH_TIMEOUT (HZ * 3)53 54enum AR5523_flags {55 AR5523_HW_UP,56 AR5523_USB_DISCONNECTED,57 AR5523_CONNECTED58};59 60struct ar5523_tx_cmd {61 struct ar5523 *ar;62 struct urb *urb_tx;63 void *buf_tx;64 void *odata;65 int olen;66 int flags;67 int res;68 struct completion done;69};70 71/* This struct is placed in tx_info->driver_data. It must not be larger72 * than IEEE80211_TX_INFO_DRIVER_DATA_SIZE.73 */74struct ar5523_tx_data {75 struct list_head list;76 struct ar5523 *ar;77 struct urb *urb;78};79 80struct ar5523_rx_data {81 struct list_head list;82 struct ar5523 *ar;83 struct urb *urb;84 struct sk_buff *skb;85};86 87struct ar5523 {88 struct usb_device *dev;89 struct ieee80211_hw *hw;90 91 unsigned long flags;92 struct mutex mutex;93 struct workqueue_struct *wq;94 95 struct ar5523_tx_cmd tx_cmd;96 97 struct delayed_work stat_work;98 99 struct timer_list tx_wd_timer;100 struct work_struct tx_wd_work;101 struct work_struct tx_work;102 struct list_head tx_queue_pending;103 struct list_head tx_queue_submitted;104 spinlock_t tx_data_list_lock;105 wait_queue_head_t tx_flush_waitq;106 107 /* Queued + Submitted TX frames */108 atomic_t tx_nr_total;109 110 /* Submitted TX frames */111 atomic_t tx_nr_pending;112 113 void *rx_cmd_buf;114 struct urb *rx_cmd_urb;115 116 struct ar5523_rx_data rx_data[AR5523_RX_DATA_COUNT];117 spinlock_t rx_data_list_lock;118 struct list_head rx_data_free;119 struct list_head rx_data_used;120 atomic_t rx_data_free_cnt;121 122 struct work_struct rx_refill_work;123 124 unsigned int rxbufsz;125 u8 serial[16];126 127 struct ieee80211_channel channels[14];128 struct ieee80211_rate rates[12];129 struct ieee80211_supported_band band;130 struct ieee80211_vif *vif;131};132 133/* flags for sending firmware commands */134#define AR5523_CMD_FLAG_READ (1 << 1)135#define AR5523_CMD_FLAG_MAGIC (1 << 2)136 137#define ar5523_dbg(ar, format, arg...) \138 dev_dbg(&(ar)->dev->dev, format, ## arg)139 140/* On USB hot-unplug there can be a lot of URBs in flight and they'll all141 * fail. Instead of dealing with them in every possible place just surpress142 * any messages on USB disconnect.143 */144#define ar5523_err(ar, format, arg...) \145do { \146 if (!test_bit(AR5523_USB_DISCONNECTED, &ar->flags)) { \147 dev_err(&(ar)->dev->dev, format, ## arg); \148 } \149} while (0)150#define ar5523_info(ar, format, arg...) \151 dev_info(&(ar)->dev->dev, format, ## arg)152