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