cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/wireless/ath/ar5523/ar5523.h

/*
 * Copyright (c) 2006 Damien Bergamini <damien.bergamini@free.fr>
 * Copyright (c) 2006 Sam Leffler, Errno Consulting
 * Copyright (c) 2007 Christoph Hellwig <hch@lst.de>
 * Copyright (c) 2008-2009 Weongyo Jeong <weongyo@freebsd.org>
 * Copyright (c) 2012 Pontus Fuchs <pontus.fuchs@gmail.com>
 *
 * 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)

Overall Contributors

PersonTokensPropCommitsCommitProp
Pontus Fuchs37699.73%150.00%
Dan Carpenter10.27%150.00%
Total377100.00%2100.00%
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