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 0x03 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 #define ALIGNED_RX_BUF_SIZE_MASK 0xFFFF00 100 #define ALIGNED_RX_BUF_SIZE_SHIFT 8 101 102 /* If set, the start of IP payload is not 4 bytes aligned */ 103 #define RX_BUF_UNALIGNED_PAYLOAD BIT(20) 104 105 /* Describes the alignment state of a Rx buffer */ 106 enum wl_rx_buf_align { 107 WLCORE_RX_BUF_ALIGNED, 108 WLCORE_RX_BUF_UNALIGNED, 109 WLCORE_RX_BUF_PADDED, 110 }; 111 112 enum { 113 WL12XX_RX_CLASS_UNKNOWN, 114 WL12XX_RX_CLASS_MANAGEMENT, 115 WL12XX_RX_CLASS_DATA, 116 WL12XX_RX_CLASS_QOS_DATA, 117 WL12XX_RX_CLASS_BCN_PRBRSP, 118 WL12XX_RX_CLASS_EAPOL, 119 WL12XX_RX_CLASS_BA_EVENT, 120 WL12XX_RX_CLASS_AMSDU, 121 WL12XX_RX_CLASS_LOGGER, 122 }; 123 124 struct wl1271_rx_descriptor { 125 __le16 length; 126 u8 status; 127 u8 flags; 128 u8 rate; 129 u8 channel; 130 s8 rssi; 131 u8 snr; 132 __le32 timestamp; 133 u8 packet_class; 134 u8 hlid; 135 u8 pad_len; 136 u8 reserved; 137 } __packed; 138 139 void wl12xx_rx(struct wl1271 *wl, struct wl_fw_status *status); 140 u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band); 141 142 #endif 143