LXR linux/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      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/* If set, the start of IP payload is not 4 bytes aligned */
 100#define RX_BUF_UNALIGNED_PAYLOAD     BIT(20)
 101
 102enum {
 103        WL12XX_RX_CLASS_UNKNOWN,
 104        WL12XX_RX_CLASS_MANAGEMENT,
 105        WL12XX_RX_CLASS_DATA,
 106        WL12XX_RX_CLASS_QOS_DATA,
 107        WL12XX_RX_CLASS_BCN_PRBRSP,
 108        WL12XX_RX_CLASS_EAPOL,
 109        WL12XX_RX_CLASS_BA_EVENT,
 110        WL12XX_RX_CLASS_AMSDU,
 111        WL12XX_RX_CLASS_LOGGER,
 112};
 113
 114struct wl1271_rx_descriptor {
 115        __le16 length;
 116        u8  status;
 117        u8  flags;
 118        u8  rate;
 119        u8  channel;
 120        s8  rssi;
 121        u8  snr;
 122        __le32 timestamp;
 123        u8  packet_class;
 124        u8  hlid;
 125        u8  pad_len;
 126        u8  reserved;
 127} __packed;
 128
 129void wl12xx_rx(struct wl1271 *wl, struct wl12xx_fw_status *status);
 130u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band);
 131
 132#endif
 133