summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/zd1211rw/zd_mac.h
blob: b8ea3de7924afb95a8032b32853616f15f7f6867 (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
190
191
192
193
194
195
196
197
198
/* zd_mac.h
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef _ZD_MAC_H
#define _ZD_MAC_H

#include <linux/wireless.h>
#include <linux/kernel.h>
#include <net/ieee80211.h>
#include <net/ieee80211softmac.h>

#include "zd_chip.h"
#include "zd_netdev.h"

struct zd_ctrlset {
	u8     modulation;
	__le16 tx_length;
	u8     control;
	/* stores only the difference to tx_length on ZD1211B */
	__le16 packet_length;
	__le16 current_length;
	u8     service;
	__le16  next_frame_length;
} __attribute__((packed));

#define ZD_CS_RESERVED_SIZE	25

/* zd_crtlset field modulation */
#define ZD_CS_RATE_MASK		0x0f
#define ZD_CS_TYPE_MASK		0x10
#define ZD_CS_RATE(modulation) ((modulation) & ZD_CS_RATE_MASK)
#define ZD_CS_TYPE(modulation) ((modulation) & ZD_CS_TYPE_MASK)

#define ZD_CS_CCK		0x00
#define ZD_CS_OFDM		0x10

#define ZD_CS_CCK_RATE_1M	0x00
#define ZD_CS_CCK_RATE_2M	0x01
#define ZD_CS_CCK_RATE_5_5M	0x02
#define ZD_CS_CCK_RATE_11M	0x03
/* The rates for OFDM are encoded as in the PLCP header. Use ZD_OFDM_RATE_*.
 */

/* bit 5 is preamble (when in CCK mode), or a/g selection (when in OFDM mode) */
#define ZD_CS_CCK_PREA_LONG	0x00
#define ZD_CS_CCK_PREA_SHORT	0x20
#define ZD_CS_OFDM_MODE_11G	0x00
#define ZD_CS_OFDM_MODE_11A	0x20

/* zd_ctrlset control field */
#define ZD_CS_NEED_RANDOM_BACKOFF	0x01
#define ZD_CS_MULTICAST			0x02

#define ZD_CS_FRAME_TYPE_MASK		0x0c
#define ZD_CS_DATA_FRAME		0x00
#define ZD_CS_PS_POLL_FRAME		0x04
#define ZD_CS_MANAGEMENT_FRAME		0x08
#define ZD_CS_NO_SEQUENCE_CTL_FRAME	0x0c

#define ZD_CS_WAKE_DESTINATION		0x10
#define ZD_CS_RTS			0x20
#define ZD_CS_ENCRYPT			0x40
#define ZD_CS_SELF_CTS			0x80

/* Incoming frames are prepended by a PLCP header */
#define ZD_PLCP_HEADER_SIZE		5

struct rx_length_info {
	__le16 length[3];
	__le16 tag;
};

#define RX_LENGTH_INFO_TAG		0x697e

struct rx_status {
	u8 signal_quality_cck;
	/* rssi */
	u8 signal_strength;
	u8 signal_quality_ofdm;
	u8 decryption_type;
	u8 frame_status;
};

/* rx_status field decryption_type */
#define ZD_RX_NO_WEP	0
#define ZD_RX_WEP64	1
#define ZD_RX_TKIP	2
#define ZD_RX_AES	4
#define ZD_RX_WEP128	5
#define ZD_RX_WEP256	6

/* rx_status field frame_status */
#define ZD_RX_FRAME_MODULATION_MASK	0x01
#define ZD_RX_CCK			0x00
#define ZD_RX_OFDM			0x01

#define ZD_RX_TIMEOUT_ERROR		0x02
#define ZD_RX_FIFO_OVERRUN_ERROR	0x04
#define ZD_RX_DECRYPTION_ERROR		0x08
#define ZD_RX_CRC32_ERROR		0x10
#define ZD_RX_NO_ADDR1_MATCH_ERROR	0x20
#define ZD_RX_CRC16_ERROR		0x40
#define ZD_RX_ERROR			0x80

enum mac_flags {
	MAC_FIXED_CHANNEL = 0x01,
};

struct housekeeping {
	struct work_struct link_led_work;
};

#define ZD_MAC_STATS_BUFFER_SIZE 16

struct zd_mac {
	struct zd_chip chip;
	spinlock_t lock;
	struct net_device *netdev;
	/* Unlocked reading possible */
	struct iw_statistics iw_stats;
	struct housekeeping housekeeping;
	unsigned int stats_count;
	u8 qual_buffer[ZD_MAC_STATS_BUFFER_SIZE];
	u8 rssi_buffer[ZD_MAC_STATS_BUFFER_SIZE];
	u8 regdomain;
	u8 default_regdomain;
	u8 requested_channel;
};

static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac)
{
	return zd_netdev_ieee80211(mac->netdev);
}

static inline struct zd_mac *zd_netdev_mac(struct net_device *netdev)
{
	return ieee80211softmac_priv(netdev);
}

static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
{
	return container_of(chip, struct zd_mac, chip);
}

static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
{
	return zd_chip_to_mac(zd_usb_to_chip(usb));
}

#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))

int zd_mac_init(struct zd_mac *mac,
                struct net_device *netdev,
		struct usb_interface *intf);
void zd_mac_clear(struct zd_mac *mac);

int zd_mac_init_hw(struct zd_mac *mac, u8 device_type);

int zd_mac_open(struct net_device *netdev);
int zd_mac_stop(struct net_device *netdev);
int zd_mac_set_mac_address(struct net_device *dev, void *p);

int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length);

int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain);
u8 zd_mac_get_regdomain(struct zd_mac *zd_mac);

int zd_mac_request_channel(struct zd_mac *mac, u8 channel);
int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags);

int zd_mac_set_mode(struct zd_mac *mac, u32 mode);
int zd_mac_get_mode(struct zd_mac *mac, u32 *mode);

int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range);

struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev);

#ifdef DEBUG
void zd_dump_rx_status(const struct rx_status *status);
#else
#define zd_dump_rx_status(status)
#endif /* DEBUG */

#endif /* _ZD_MAC_H */