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Luciano Coelhof5fc0f82009-08-06 16:25:28 +03001/*
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 __WL1271_RX_H__
26#define __WL1271_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 WL1271_RX_ALIGN_TO 4
34#define WL1271_RX_ALIGN(len) (((len) + WL1271_RX_ALIGN_TO - 1) & \
35 ~(WL1271_RX_ALIGN_TO - 1))
36
37#define SHORT_PREAMBLE_BIT BIT(0)
38#define OFDM_RATE_BIT BIT(6)
39#define PBCC_RATE_BIT BIT(7)
40
41#define PLCP_HEADER_LENGTH 8
42#define RX_DESC_PACKETID_SHIFT 11
43#define RX_MAX_PACKET_ID 3
44
45#define NUM_RX_PKT_DESC_MOD_MASK 7
Luciano Coelhof5fc0f82009-08-06 16:25:28 +030046
47#define RX_DESC_VALID_FCS 0x0001
48#define RX_DESC_MATCH_RXADDR1 0x0002
49#define RX_DESC_MCAST 0x0004
50#define RX_DESC_STAINTIM 0x0008
51#define RX_DESC_VIRTUAL_BM 0x0010
52#define RX_DESC_BCAST 0x0020
53#define RX_DESC_MATCH_SSID 0x0040
54#define RX_DESC_MATCH_BSSID 0x0080
55#define RX_DESC_ENCRYPTION_MASK 0x0300
56#define RX_DESC_MEASURMENT 0x0400
57#define RX_DESC_SEQNUM_MASK 0x1800
58#define RX_DESC_MIC_FAIL 0x2000
59#define RX_DESC_DECRYPT_FAIL 0x4000
60
61/*
62 * RX Descriptor flags:
63 *
64 * Bits 0-1 - band
65 * Bit 2 - STBC
66 * Bit 3 - A-MPDU
67 * Bit 4 - HT
68 * Bits 5-7 - encryption
69 */
70#define WL1271_RX_DESC_BAND_MASK 0x03
71#define WL1271_RX_DESC_ENCRYPT_MASK 0xE0
72
73#define WL1271_RX_DESC_BAND_BG 0x00
74#define WL1271_RX_DESC_BAND_J 0x01
75#define WL1271_RX_DESC_BAND_A 0x02
76
77#define WL1271_RX_DESC_STBC BIT(2)
78#define WL1271_RX_DESC_A_MPDU BIT(3)
79#define WL1271_RX_DESC_HT BIT(4)
80
81#define WL1271_RX_DESC_ENCRYPT_WEP 0x20
82#define WL1271_RX_DESC_ENCRYPT_TKIP 0x40
83#define WL1271_RX_DESC_ENCRYPT_AES 0x60
84#define WL1271_RX_DESC_ENCRYPT_GEM 0x80
85
86/*
87 * RX Descriptor status
88 *
89 * Bits 0-2 - status
90 * Bits 3-7 - reserved
91 */
92#define WL1271_RX_DESC_STATUS_MASK 0x07
93
94#define WL1271_RX_DESC_SUCCESS 0x00
95#define WL1271_RX_DESC_DECRYPT_FAIL 0x01
96#define WL1271_RX_DESC_MIC_FAIL 0x02
97#define WL1271_RX_DESC_DRIVER_RX_Q_FAIL 0x03
98
99#define RX_MEM_BLOCK_MASK 0xFF
100#define RX_BUF_SIZE_MASK 0xFFF00
101#define RX_BUF_SIZE_SHIFT_DIV 6
102
103struct wl1271_rx_descriptor {
Luciano Coelhod0f63b22009-10-15 10:33:29 +0300104 __le16 length;
Luciano Coelhof5fc0f82009-08-06 16:25:28 +0300105 u8 status;
106 u8 flags;
107 u8 rate;
108 u8 channel;
109 s8 rssi;
110 u8 snr;
Luciano Coelhod0f63b22009-10-15 10:33:29 +0300111 __le32 timestamp;
Luciano Coelhof5fc0f82009-08-06 16:25:28 +0300112 u8 packet_class;
113 u8 process_id;
114 u8 pad_len;
115 u8 reserved;
Eric Dumazetba2d3582010-06-02 18:10:09 +0000116} __packed;
Luciano Coelhof5fc0f82009-08-06 16:25:28 +0300117
118void wl1271_rx(struct wl1271 *wl, struct wl1271_fw_status *status);
Juuso Oikarinenf876bb92010-03-26 12:53:11 +0200119u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate);
Luciano Coelhof5fc0f82009-08-06 16:25:28 +0300120
121#endif