aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ath5k/base.h
blob: 06d1054ca94b9cc525ee4f9516c5363b26d39fa2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/*-
 * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 *
 */

/*
 * Defintions for the Atheros Wireless LAN controller driver.
 */
#ifndef _DEV_ATH_ATHVAR_H
#define _DEV_ATH_ATHVAR_H

#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/wireless.h>
#include <linux/if_ether.h>
#include <linux/leds.h>

#include "ath5k.h"
#include "debug.h"

#define	ATH_RXBUF	40		/* number of RX buffers */
#define	ATH_TXBUF	200		/* number of TX buffers */
#define ATH_BCBUF	1		/* number of beacon buffers */

struct ath5k_buf {
	struct list_head	list;
	unsigned int		flags;	/* rx descriptor flags */
	struct ath5k_desc	*desc;	/* virtual addr of desc */
	dma_addr_t		daddr;	/* physical addr of desc */
	struct sk_buff		*skb;	/* skbuff for buf */
	dma_addr_t		skbaddr;/* physical addr of skb data */
};

/*
 * Data transmit queue state.  One of these exists for each
 * hardware transmit queue.  Packets sent to us from above
 * are assigned to queues based on their priority.  Not all
 * devices support a complete set of hardware transmit queues.
 * For those devices the array sc_ac2q will map multiple
 * priorities to fewer hardware queues (typically all to one
 * hardware queue).
 */
struct ath5k_txq {
	unsigned int		qnum;	/* hardware q number */
	u32			*link;	/* link ptr in last TX desc */
	struct list_head	q;	/* transmit queue */
	spinlock_t		lock;	/* lock on q and link */
	bool			setup;
};

#define ATH5K_LED_MAX_NAME_LEN 31

/*
 * State for LED triggers
 */
struct ath5k_led
{
	char name[ATH5K_LED_MAX_NAME_LEN + 1];	/* name of the LED in sysfs */
	struct ath5k_softc *sc;			/* driver state */
	struct led_classdev led_dev;		/* led classdev */
};


#if CHAN_DEBUG
#define ATH_CHAN_MAX	(26+26+26+200+200)
#else
#define ATH_CHAN_MAX	(14+14+14+252+20)
#endif

/* Software Carrier, keeps track of the driver state
 * associated with an instance of a device */
struct ath5k_softc {
	struct pci_dev		*pdev;		/* for dma mapping */
	void __iomem		*iobase;	/* address of the device */
	struct mutex		lock;		/* dev-level lock */
	/* FIXME: how many does it really need? */
	struct ieee80211_tx_queue_stats tx_stats[16];
	struct ieee80211_low_level_stats ll_stats;
	struct ieee80211_hw	*hw;		/* IEEE 802.11 common */
	struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
	struct ieee80211_channel channels[ATH_CHAN_MAX];
	struct ieee80211_rate	rates[IEEE80211_NUM_BANDS][AR5K_MAX_RATES];
	u8			rate_idx[IEEE80211_NUM_BANDS][AR5K_MAX_RATES];
	enum nl80211_iftype	opmode;
	struct ath5k_hw		*ah;		/* Atheros HW */

	struct ieee80211_supported_band		*curband;

#ifdef CONFIG_ATH5K_DEBUG
	struct ath5k_dbg_info	debug;		/* debug info */
#endif /* CONFIG_ATH5K_DEBUG */

	struct ath5k_buf	*bufptr;	/* allocated buffer ptr */
	struct ath5k_desc	*desc;		/* TX/RX descriptors */
	dma_addr_t		desc_daddr;	/* DMA (physical) address */
	size_t			desc_len;	/* size of TX/RX descriptors */
	u16			cachelsz;	/* cache line size */

	DECLARE_BITMAP(status, 5);
#define ATH_STAT_INVALID	0		/* disable hardware accesses */
#define ATH_STAT_MRRETRY	1		/* multi-rate retry support */
#define ATH_STAT_PROMISC	2
#define ATH_STAT_LEDSOFT	3		/* enable LED gpio status */
#define ATH_STAT_STARTED	4		/* opened & irqs enabled */

	unsigned int		filter_flags;	/* HW flags, AR5K_RX_FILTER_* */
	unsigned int		curmode;	/* current phy mode */
	struct ieee80211_channel *curchan;	/* current h/w channel */

	struct ieee80211_vif *vif;

	enum ath5k_int		imask;		/* interrupt mask copy */

	DECLARE_BITMAP(keymap, AR5K_KEYCACHE_SIZE); /* key use bit map */

	u8			bssidmask[ETH_ALEN];

	unsigned int		led_pin,	/* GPIO pin for driving LED */
				led_on,		/* pin setting for LED on */
				led_off;	/* off time for current blink */

	struct tasklet_struct	restq;		/* reset tasklet */

	unsigned int		rxbufsize;	/* rx size based on mtu */
	struct list_head	rxbuf;		/* receive buffer */
	spinlock_t		rxbuflock;
	u32			*rxlink;	/* link ptr in last RX desc */
	struct tasklet_struct	rxtq;		/* rx intr tasklet */
	struct ath5k_led	rx_led;		/* rx led */

	struct list_head	txbuf;		/* transmit buffer */
	spinlock_t		txbuflock;
	unsigned int		txbuf_len;	/* buf count in txbuf list */
	struct ath5k_txq	txqs[2];	/* beacon and tx */

	struct ath5k_txq	*txq;		/* beacon and tx*/
	struct tasklet_struct	txtq;		/* tx intr tasklet */
	struct ath5k_led	tx_led;		/* tx led */

	spinlock_t		block;		/* protects beacon */
	struct ath5k_buf	*bbuf;		/* beacon buffer */
	unsigned int		bhalq,		/* SW q for outgoing beacons */
				bmisscount,	/* missed beacon transmits */
				bintval,	/* beacon interval in TU */
				bsent;
	unsigned int		nexttbtt;	/* next beacon time in TU */

	struct timer_list	calib_tim;	/* calibration timer */
	int 			power_level;	/* Requested tx power in dbm */
};

#define ath5k_hw_hasbssidmask(_ah) \
	(ath5k_hw_get_capability(_ah, AR5K_CAP_BSSIDMASK, 0, NULL) == 0)
#define ath5k_hw_hasveol(_ah) \
	(ath5k_hw_get_capability(_ah, AR5K_CAP_VEOL, 0, NULL) == 0)

#endif