Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
rx.h
Go to the documentation of this file.
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 <[email protected]>
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 RX_DESC_VALID_FCS 0x0001
42 #define RX_DESC_MATCH_RXADDR1 0x0002
43 #define RX_DESC_MCAST 0x0004
44 #define RX_DESC_STAINTIM 0x0008
45 #define RX_DESC_VIRTUAL_BM 0x0010
46 #define RX_DESC_BCAST 0x0020
47 #define RX_DESC_MATCH_SSID 0x0040
48 #define RX_DESC_MATCH_BSSID 0x0080
49 #define RX_DESC_ENCRYPTION_MASK 0x0300
50 #define RX_DESC_MEASURMENT 0x0400
51 #define RX_DESC_SEQNUM_MASK 0x1800
52 #define RX_DESC_MIC_FAIL 0x2000
53 #define RX_DESC_DECRYPT_FAIL 0x4000
54 
55 /*
56  * RX Descriptor flags:
57  *
58  * Bits 0-1 - band
59  * Bit 2 - STBC
60  * Bit 3 - A-MPDU
61  * Bit 4 - HT
62  * Bits 5-7 - encryption
63  */
64 #define WL1271_RX_DESC_BAND_MASK 0x03
65 #define WL1271_RX_DESC_ENCRYPT_MASK 0xE0
66 
67 #define WL1271_RX_DESC_BAND_BG 0x00
68 #define WL1271_RX_DESC_BAND_J 0x01
69 #define WL1271_RX_DESC_BAND_A 0x02
70 
71 #define WL1271_RX_DESC_STBC BIT(2)
72 #define WL1271_RX_DESC_A_MPDU BIT(3)
73 #define WL1271_RX_DESC_HT BIT(4)
74 
75 #define WL1271_RX_DESC_ENCRYPT_WEP 0x20
76 #define WL1271_RX_DESC_ENCRYPT_TKIP 0x40
77 #define WL1271_RX_DESC_ENCRYPT_AES 0x60
78 #define WL1271_RX_DESC_ENCRYPT_GEM 0x80
79 
80 /*
81  * RX Descriptor status
82  *
83  * Bits 0-2 - error code
84  * Bits 3-5 - process_id tag (AP mode FW)
85  * Bits 6-7 - reserved
86  */
87 #define WL1271_RX_DESC_STATUS_MASK 0x03
88 
89 #define WL1271_RX_DESC_SUCCESS 0x00
90 #define WL1271_RX_DESC_DECRYPT_FAIL 0x01
91 #define WL1271_RX_DESC_MIC_FAIL 0x02
92 #define WL1271_RX_DESC_DRIVER_RX_Q_FAIL 0x03
93 
94 #define RX_MEM_BLOCK_MASK 0xFF
95 #define RX_BUF_SIZE_MASK 0xFFF00
96 #define RX_BUF_SIZE_SHIFT_DIV 6
97 #define ALIGNED_RX_BUF_SIZE_MASK 0xFFFF00
98 #define ALIGNED_RX_BUF_SIZE_SHIFT 8
99 
100 /* If set, the start of IP payload is not 4 bytes aligned */
101 #define RX_BUF_UNALIGNED_PAYLOAD BIT(20)
102 
103 /* If set, the buffer was padded by the FW to be 4 bytes aligned */
104 #define RX_BUF_PADDED_PAYLOAD BIT(30)
105 
106 /*
107  * Account for the padding inserted by the FW in case of RX_ALIGNMENT
108  * or for fixing alignment in case the packet wasn't aligned.
109  */
110 #define RX_BUF_ALIGN 2
111 
112 /* Describes the alignment state of a Rx buffer */
117 };
118 
119 enum {
129 };
130 
144 } __packed;
145 
146 int wlcore_rx(struct wl1271 *wl, struct wl_fw_status_1 *status);
147 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band);
148 int wl1271_rx_filter_enable(struct wl1271 *wl,
149  int index, bool enable,
150  struct wl12xx_rx_filter *filter);
151 int wl1271_rx_filter_clear_all(struct wl1271 *wl);
152 
153 #endif