152 lines
4.1 KiB
C
152 lines
4.1 KiB
C
/*
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* Copyright (c) 2006 Damien Bergamini <damien.bergamini@free.fr>
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* Copyright (c) 2006 Sam Leffler, Errno Consulting
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* Copyright (c) 2007 Christoph Hellwig <hch@lst.de>
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* Copyright (c) 2008-2009 Weongyo Jeong <weongyo@freebsd.org>
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* Copyright (c) 2012 Pontus Fuchs <pontus.fuchs@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define AR5523_FLAG_PRE_FIRMWARE (1 << 0)
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#define AR5523_FLAG_ABG (1 << 1)
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#define AR5523_FIRMWARE_FILE "ar5523.bin"
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#define AR5523_CMD_TX_PIPE 0x01
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#define AR5523_DATA_TX_PIPE 0x02
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#define AR5523_CMD_RX_PIPE 0x81
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#define AR5523_DATA_RX_PIPE 0x82
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#define ar5523_cmd_tx_pipe(dev) \
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usb_sndbulkpipe((dev), AR5523_CMD_TX_PIPE)
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#define ar5523_data_tx_pipe(dev) \
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usb_sndbulkpipe((dev), AR5523_DATA_TX_PIPE)
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#define ar5523_cmd_rx_pipe(dev) \
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usb_rcvbulkpipe((dev), AR5523_CMD_RX_PIPE)
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#define ar5523_data_rx_pipe(dev) \
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usb_rcvbulkpipe((dev), AR5523_DATA_RX_PIPE)
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#define AR5523_DATA_TIMEOUT 10000
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#define AR5523_CMD_TIMEOUT 1000
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#define AR5523_TX_DATA_COUNT 8
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#define AR5523_TX_DATA_RESTART_COUNT 2
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#define AR5523_RX_DATA_COUNT 16
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#define AR5523_RX_DATA_REFILL_COUNT 8
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#define AR5523_CMD_ID 1
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#define AR5523_DATA_ID 2
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#define AR5523_TX_WD_TIMEOUT (HZ * 2)
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#define AR5523_FLUSH_TIMEOUT (HZ * 3)
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enum AR5523_flags {
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AR5523_HW_UP,
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AR5523_USB_DISCONNECTED,
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AR5523_CONNECTED
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};
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struct ar5523_tx_cmd {
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struct ar5523 *ar;
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struct urb *urb_tx;
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void *buf_tx;
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void *odata;
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int olen;
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int flags;
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int res;
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struct completion done;
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};
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/* This struct is placed in tx_info->driver_data. It must not be larger
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* than IEEE80211_TX_INFO_DRIVER_DATA_SIZE.
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*/
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struct ar5523_tx_data {
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struct list_head list;
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struct ar5523 *ar;
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struct urb *urb;
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};
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struct ar5523_rx_data {
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struct list_head list;
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struct ar5523 *ar;
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struct urb *urb;
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struct sk_buff *skb;
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};
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struct ar5523 {
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struct usb_device *dev;
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struct ieee80211_hw *hw;
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unsigned long flags;
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struct mutex mutex;
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struct workqueue_struct *wq;
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struct ar5523_tx_cmd tx_cmd;
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struct delayed_work stat_work;
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struct timer_list tx_wd_timer;
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struct work_struct tx_wd_work;
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struct work_struct tx_work;
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struct list_head tx_queue_pending;
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struct list_head tx_queue_submitted;
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spinlock_t tx_data_list_lock;
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wait_queue_head_t tx_flush_waitq;
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/* Queued + Submitted TX frames */
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atomic_t tx_nr_total;
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/* Submitted TX frames */
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atomic_t tx_nr_pending;
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void *rx_cmd_buf;
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struct urb *rx_cmd_urb;
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struct ar5523_rx_data rx_data[AR5523_RX_DATA_COUNT];
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spinlock_t rx_data_list_lock;
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struct list_head rx_data_free;
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struct list_head rx_data_used;
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atomic_t rx_data_free_cnt;
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struct work_struct rx_refill_work;
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unsigned int rxbufsz;
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u8 serial[16];
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struct ieee80211_channel channels[14];
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struct ieee80211_rate rates[12];
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struct ieee80211_supported_band band;
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struct ieee80211_vif *vif;
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};
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/* flags for sending firmware commands */
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#define AR5523_CMD_FLAG_READ (1 << 1)
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#define AR5523_CMD_FLAG_MAGIC (1 << 2)
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#define ar5523_dbg(ar, format, arg...) \
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dev_dbg(&(ar)->dev->dev, format, ## arg)
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/* On USB hot-unplug there can be a lot of URBs in flight and they'll all
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* fail. Instead of dealing with them in every possible place just surpress
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* any messages on USB disconnect.
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*/
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#define ar5523_err(ar, format, arg...) \
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do { \
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if (!test_bit(AR5523_USB_DISCONNECTED, &ar->flags)) { \
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dev_err(&(ar)->dev->dev, format, ## arg); \
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} \
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} while (0)
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#define ar5523_info(ar, format, arg...) \
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dev_info(&(ar)->dev->dev, format, ## arg)
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