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 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 0x07 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 93 #define RX_MEM_BLOCK_MASK 0xFF 94 #define RX_BUF_SIZE_MASK 0xFFF00 95 #define RX_BUF_SIZE_SHIFT_DIV 6 96 #define ALIGNED_RX_BUF_SIZE_MASK 0xFFFF00 97 #define ALIGNED_RX_BUF_SIZE_SHIFT 8 98 99 /* If set, the start of IP payload is not 4 bytes aligned */ 100 #define RX_BUF_UNALIGNED_PAYLOAD BIT(20) 101 102 /* If set, the buffer was padded by the FW to be 4 bytes aligned */ 103 #define RX_BUF_PADDED_PAYLOAD BIT(30) 104 105 /* 106 * Account for the padding inserted by the FW in case of RX_ALIGNMENT 107 * or for fixing alignment in case the packet wasn't aligned. 108 */ 109 #define RX_BUF_ALIGN 2 110 111 /* Describes the alignment state of a Rx buffer */ 112 enum wl_rx_buf_align { 113 WLCORE_RX_BUF_ALIGNED, 114 WLCORE_RX_BUF_UNALIGNED, 115 WLCORE_RX_BUF_PADDED, 116 }; 117 118 enum { 119 WL12XX_RX_CLASS_UNKNOWN, 120 WL12XX_RX_CLASS_MANAGEMENT, 121 WL12XX_RX_CLASS_DATA, 122 WL12XX_RX_CLASS_QOS_DATA, 123 WL12XX_RX_CLASS_BCN_PRBRSP, 124 WL12XX_RX_CLASS_EAPOL, 125 WL12XX_RX_CLASS_BA_EVENT, 126 WL12XX_RX_CLASS_AMSDU, 127 WL12XX_RX_CLASS_LOGGER, 128 }; 129 130 struct wl1271_rx_descriptor { 131 __le16 length; 132 u8 status; 133 u8 flags; 134 u8 rate; 135 u8 channel; 136 s8 rssi; 137 u8 snr; 138 __le32 timestamp; 139 u8 packet_class; 140 u8 hlid; 141 u8 pad_len; 142 u8 reserved; 143 } __packed; 144 145 int wlcore_rx(struct wl1271 *wl, struct wl_fw_status_1 *status); 146 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band); 147 int wl1271_rx_filter_enable(struct wl1271 *wl, 148 int index, bool enable, 149 struct wl12xx_rx_filter *filter); 150 int wl1271_rx_filter_clear_all(struct wl1271 *wl); 151 152 #endif 153