aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/bcm43xx/bcm43xx_xmit.h
blob: 47c135a7f4dc6136d7f2ce0e698ef204f5c1a3bd (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
#ifndef BCM43xx_XMIT_H_
#define BCM43xx_XMIT_H_

#include "bcm43xx_main.h"


#define _bcm43xx_declare_plcp_hdr(size) \
	struct bcm43xx_plcp_hdr##size {		\
		union {				\
			__le32 data;		\
			__u8 raw[size];		\
		} __attribute__((__packed__));	\
	} __attribute__((__packed__))

/* struct bcm43xx_plcp_hdr4 */
_bcm43xx_declare_plcp_hdr(4);
/* struct bcm43xx_plcp_hdr6 */
_bcm43xx_declare_plcp_hdr(6);

#undef _bcm43xx_declare_plcp_hdr

/* Device specific TX header. To be prepended to TX frames. */
struct bcm43xx_txhdr {
	union {
		struct {
			__le16 flags;
			__le16 wsec_rate;
			__le16 frame_control;
			u16 unknown_zeroed_0;
			__le16 control;
			u8 wep_iv[10];
			u8 unknown_wsec_tkip_data[3]; //FIXME
			PAD_BYTES(3);
			u8 mac1[6];
			u16 unknown_zeroed_1;
			struct bcm43xx_plcp_hdr4 rts_cts_fallback_plcp;
			__le16 rts_cts_dur_fallback;
			struct bcm43xx_plcp_hdr4 fallback_plcp;
			__le16 fallback_dur_id;
			PAD_BYTES(2);
			__le16 cookie;
			__le16 unknown_scb_stuff; //FIXME
			struct bcm43xx_plcp_hdr6 rts_cts_plcp;
			__le16 rts_cts_frame_control;
			__le16 rts_cts_dur;
			u8 rts_cts_mac1[6];
			u8 rts_cts_mac2[6];
			PAD_BYTES(2);
			struct bcm43xx_plcp_hdr6 plcp;
		} __attribute__((__packed__));
		u8 raw[82];
	} __attribute__((__packed__));
} __attribute__((__packed__));

/* Values/Masks for the device TX header */
#define BCM43xx_TXHDRFLAG_EXPECTACK		0x0001
#define BCM43xx_TXHDRFLAG_RTSCTS		0x0002
#define BCM43xx_TXHDRFLAG_RTS			0x0004
#define BCM43xx_TXHDRFLAG_FIRSTFRAGMENT		0x0008
#define BCM43xx_TXHDRFLAG_DESTPSMODE		0x0020
#define BCM43xx_TXHDRFLAG_RTSCTS_OFDM		0x0080
#define BCM43xx_TXHDRFLAG_FALLBACKOFDM		0x0100
#define BCM43xx_TXHDRFLAG_RTSCTSFALLBACK_OFDM	0x0200
#define BCM43xx_TXHDRFLAG_CTS			0x0400
#define BCM43xx_TXHDRFLAG_FRAMEBURST		0x0800

#define BCM43xx_TXHDRCTL_OFDM			0x0001
#define BCM43xx_TXHDRCTL_SHORT_PREAMBLE		0x0010
#define BCM43xx_TXHDRCTL_ANTENNADIV_MASK	0x0030
#define BCM43xx_TXHDRCTL_ANTENNADIV_SHIFT	8

#define BCM43xx_TXHDR_RATE_MASK			0x0F00
#define BCM43xx_TXHDR_RATE_SHIFT		8
#define BCM43xx_TXHDR_RTSRATE_MASK		0xF000
#define BCM43xx_TXHDR_RTSRATE_SHIFT		12
#define BCM43xx_TXHDR_WSEC_KEYINDEX_MASK	0x00F0
#define BCM43xx_TXHDR_WSEC_KEYINDEX_SHIFT	4
#define BCM43xx_TXHDR_WSEC_ALGO_MASK		0x0003
#define BCM43xx_TXHDR_WSEC_ALGO_SHIFT		0

void bcm43xx_generate_txhdr(struct bcm43xx_private *bcm,
			    struct bcm43xx_txhdr *txhdr,
			    const unsigned char *fragment_data,
			    const unsigned int fragment_len,
			    const int is_first_fragment,
			    const u16 cookie);

/* RX header as received from the hardware. */
struct bcm43xx_rxhdr {
	/* Frame Length. Must be generated explicitly in PIO mode. */
	__le16 frame_length;
	PAD_BYTES(2);
	/* Flags field 1 */
	__le16 flags1;
	u8 rssi;
	u8 signal_quality;
	PAD_BYTES(2);
	/* Flags field 3 */
	__le16 flags3;
	/* Flags field 2 */
	__le16 flags2;
	/* Lower 16bits of the TSF at the time the frame started. */
	__le16 mactime;
	PAD_BYTES(14);
} __attribute__((__packed__));

#define BCM43xx_RXHDR_FLAGS1_OFDM		(1 << 0)
/*#define BCM43xx_RXHDR_FLAGS1_SIGNAL???	(1 << 3) FIXME */
#define BCM43xx_RXHDR_FLAGS1_SHORTPREAMBLE	(1 << 7)
#define BCM43xx_RXHDR_FLAGS1_2053RSSIADJ	(1 << 14)

#define BCM43xx_RXHDR_FLAGS2_INVALIDFRAME	(1 << 0)
#define BCM43xx_RXHDR_FLAGS2_TYPE2FRAME		(1 << 2)
/*FIXME: WEP related flags */

#define BCM43xx_RXHDR_FLAGS3_2050RSSIADJ	(1 << 10)

/* Transmit Status as received from the hardware. */
struct bcm43xx_hwxmitstatus {
	PAD_BYTES(4);
	__le16 cookie;
	u8 flags;
	u8 cnt1:4,
	   cnt2:4;
	PAD_BYTES(2);
	__le16 seq;
	__le16 unknown; //FIXME
} __attribute__((__packed__));

/* Transmit Status in CPU byteorder. */
struct bcm43xx_xmitstatus {
	u16 cookie;
	u8 flags;
	u8 cnt1:4,
	   cnt2:4;
	u16 seq;
	u16 unknown; //FIXME
};

#define BCM43xx_TXSTAT_FLAG_AMPDU	0x10
#define BCM43xx_TXSTAT_FLAG_INTER	0x20

u8 bcm43xx_plcp_get_ratecode_cck(const u8 bitrate);
u8 bcm43xx_plcp_get_ratecode_ofdm(const u8 bitrate);

int bcm43xx_rx(struct bcm43xx_private *bcm,
	       struct sk_buff *skb,
	       struct bcm43xx_rxhdr *rxhdr);

#endif /* BCM43xx_XMIT_H_ */