Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6.git] / drivers / net / wireless / wl12xx / rx.h
1 /*
2  * This file is part of wl1271
3  *
4  * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
5  * Copyright (C) 2008-2009 Nokia Corporation
6  *
7  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * version 2 as published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21  * 02110-1301 USA
22  *
23  */
24
25 #ifndef __RX_H__
26 #define __RX_H__
27
28 #include <linux/bitops.h>
29
30 #define WL1271_RX_MAX_RSSI -30
31 #define WL1271_RX_MIN_RSSI -95
32
33 #define SHORT_PREAMBLE_BIT   BIT(0)
34 #define OFDM_RATE_BIT        BIT(6)
35 #define PBCC_RATE_BIT        BIT(7)
36
37 #define PLCP_HEADER_LENGTH 8
38 #define RX_DESC_PACKETID_SHIFT 11
39 #define RX_MAX_PACKET_ID 3
40
41 #define NUM_RX_PKT_DESC_MOD_MASK   7
42
43 #define RX_DESC_VALID_FCS         0x0001
44 #define RX_DESC_MATCH_RXADDR1     0x0002
45 #define RX_DESC_MCAST             0x0004
46 #define RX_DESC_STAINTIM          0x0008
47 #define RX_DESC_VIRTUAL_BM        0x0010
48 #define RX_DESC_BCAST             0x0020
49 #define RX_DESC_MATCH_SSID        0x0040
50 #define RX_DESC_MATCH_BSSID       0x0080
51 #define RX_DESC_ENCRYPTION_MASK   0x0300
52 #define RX_DESC_MEASURMENT        0x0400
53 #define RX_DESC_SEQNUM_MASK       0x1800
54 #define RX_DESC_MIC_FAIL          0x2000
55 #define RX_DESC_DECRYPT_FAIL      0x4000
56
57 /*
58  * RX Descriptor flags:
59  *
60  * Bits 0-1 - band
61  * Bit  2   - STBC
62  * Bit  3   - A-MPDU
63  * Bit  4   - HT
64  * Bits 5-7 - encryption
65  */
66 #define WL1271_RX_DESC_BAND_MASK    0x03
67 #define WL1271_RX_DESC_ENCRYPT_MASK 0xE0
68
69 #define WL1271_RX_DESC_BAND_BG      0x00
70 #define WL1271_RX_DESC_BAND_J       0x01
71 #define WL1271_RX_DESC_BAND_A       0x02
72
73 #define WL1271_RX_DESC_STBC         BIT(2)
74 #define WL1271_RX_DESC_A_MPDU       BIT(3)
75 #define WL1271_RX_DESC_HT           BIT(4)
76
77 #define WL1271_RX_DESC_ENCRYPT_WEP  0x20
78 #define WL1271_RX_DESC_ENCRYPT_TKIP 0x40
79 #define WL1271_RX_DESC_ENCRYPT_AES  0x60
80 #define WL1271_RX_DESC_ENCRYPT_GEM  0x80
81
82 /*
83  * RX Descriptor status
84  *
85  * Bits 0-2 - error code
86  * Bits 3-5 - process_id tag (AP mode FW)
87  * Bits 6-7 - reserved
88  */
89 #define WL1271_RX_DESC_STATUS_MASK      0x07
90
91 #define WL1271_RX_DESC_SUCCESS          0x00
92 #define WL1271_RX_DESC_DECRYPT_FAIL     0x01
93 #define WL1271_RX_DESC_MIC_FAIL         0x02
94 #define WL1271_RX_DESC_DRIVER_RX_Q_FAIL 0x03
95
96 #define RX_MEM_BLOCK_MASK     0xFF
97 #define RX_BUF_SIZE_MASK      0xFFF00
98 #define RX_BUF_SIZE_SHIFT_DIV 6
99
100 enum {
101         WL12XX_RX_CLASS_UNKNOWN,
102         WL12XX_RX_CLASS_MANAGEMENT,
103         WL12XX_RX_CLASS_DATA,
104         WL12XX_RX_CLASS_QOS_DATA,
105         WL12XX_RX_CLASS_BCN_PRBRSP,
106         WL12XX_RX_CLASS_EAPOL,
107         WL12XX_RX_CLASS_BA_EVENT,
108         WL12XX_RX_CLASS_AMSDU,
109         WL12XX_RX_CLASS_LOGGER,
110 };
111
112 struct wl1271_rx_descriptor {
113         __le16 length;
114         u8  status;
115         u8  flags;
116         u8  rate;
117         u8  channel;
118         s8  rssi;
119         u8  snr;
120         __le32 timestamp;
121         u8  packet_class;
122         union {
123                 u8  process_id; /* STA FW */
124                 u8  hlid; /* AP FW */
125         } __packed;
126         u8  pad_len;
127         u8  reserved;
128 } __packed;
129
130 void wl1271_rx(struct wl1271 *wl, struct wl1271_fw_common_status *status);
131 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band);
132 void wl1271_set_default_filters(struct wl1271 *wl);
133
134 #endif