LXR linux/drivers/net/wireless/ti/wlcore/rx.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * This file is part of wl1271
   4 *
   5 * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
   6 * Copyright (C) 2008-2009 Nokia Corporation
   7 *
   8 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   9 */
  10
  11#ifndef __RX_H__
  12#define __RX_H__
  13
  14#include <linux/bitops.h>
  15
  16#define WL1271_RX_MAX_RSSI -30
  17#define WL1271_RX_MIN_RSSI -95
  18
  19#define RSSI_LEVEL_BITMASK      0x7F
  20#define ANT_DIVERSITY_BITMASK   BIT(7)
  21
  22#define SHORT_PREAMBLE_BIT   BIT(0)
  23#define OFDM_RATE_BIT        BIT(6)
  24#define PBCC_RATE_BIT        BIT(7)
  25
  26#define PLCP_HEADER_LENGTH 8
  27#define RX_DESC_PACKETID_SHIFT 11
  28#define RX_MAX_PACKET_ID 3
  29
  30#define RX_DESC_VALID_FCS         0x0001
  31#define RX_DESC_MATCH_RXADDR1     0x0002
  32#define RX_DESC_MCAST             0x0004
  33#define RX_DESC_STAINTIM          0x0008
  34#define RX_DESC_VIRTUAL_BM        0x0010
  35#define RX_DESC_BCAST             0x0020
  36#define RX_DESC_MATCH_SSID        0x0040
  37#define RX_DESC_MATCH_BSSID       0x0080
  38#define RX_DESC_ENCRYPTION_MASK   0x0300
  39#define RX_DESC_MEASURMENT        0x0400
  40#define RX_DESC_SEQNUM_MASK       0x1800
  41#define RX_DESC_MIC_FAIL          0x2000
  42#define RX_DESC_DECRYPT_FAIL      0x4000
  43
  44/*
  45 * RX Descriptor flags:
  46 *
  47 * Bits 0-1 - band
  48 * Bit  2   - STBC
  49 * Bit  3   - A-MPDU
  50 * Bit  4   - HT
  51 * Bits 5-7 - encryption
  52 */
  53#define WL1271_RX_DESC_BAND_MASK    0x03
  54#define WL1271_RX_DESC_ENCRYPT_MASK 0xE0
  55
  56#define WL1271_RX_DESC_BAND_BG      0x00
  57#define WL1271_RX_DESC_BAND_J       0x01
  58#define WL1271_RX_DESC_BAND_A       0x02
  59
  60#define WL1271_RX_DESC_STBC         BIT(2)
  61#define WL1271_RX_DESC_A_MPDU       BIT(3)
  62#define WL1271_RX_DESC_HT           BIT(4)
  63
  64#define WL1271_RX_DESC_ENCRYPT_WEP  0x20
  65#define WL1271_RX_DESC_ENCRYPT_TKIP 0x40
  66#define WL1271_RX_DESC_ENCRYPT_AES  0x60
  67#define WL1271_RX_DESC_ENCRYPT_GEM  0x80
  68
  69/*
  70 * RX Descriptor status
  71 *
  72 * Bits 0-2 - error code
  73 * Bits 3-5 - process_id tag (AP mode FW)
  74 * Bits 6-7 - reserved
  75 */
  76#define WL1271_RX_DESC_STATUS_MASK      0x07
  77
  78#define WL1271_RX_DESC_SUCCESS          0x00
  79#define WL1271_RX_DESC_DECRYPT_FAIL     0x01
  80#define WL1271_RX_DESC_MIC_FAIL         0x02
  81
  82#define RX_MEM_BLOCK_MASK            0xFF
  83#define RX_BUF_SIZE_MASK             0xFFF00
  84#define RX_BUF_SIZE_SHIFT_DIV        6
  85#define ALIGNED_RX_BUF_SIZE_MASK     0xFFFF00
  86#define ALIGNED_RX_BUF_SIZE_SHIFT    8
  87
  88/* If set, the start of IP payload is not 4 bytes aligned */
  89#define RX_BUF_UNALIGNED_PAYLOAD     BIT(20)
  90
  91/* If set, the buffer was padded by the FW to be 4 bytes aligned */
  92#define RX_BUF_PADDED_PAYLOAD        BIT(30)
  93
  94/*
  95 * Account for the padding inserted by the FW in case of RX_ALIGNMENT
  96 * or for fixing alignment in case the packet wasn't aligned.
  97 */
  98#define RX_BUF_ALIGN                 2
  99
 100/* Describes the alignment state of a Rx buffer */
 101enum wl_rx_buf_align {
 102        WLCORE_RX_BUF_ALIGNED,
 103        WLCORE_RX_BUF_UNALIGNED,
 104        WLCORE_RX_BUF_PADDED,
 105};
 106
 107enum {
 108        WL12XX_RX_CLASS_UNKNOWN,
 109        WL12XX_RX_CLASS_MANAGEMENT,
 110        WL12XX_RX_CLASS_DATA,
 111        WL12XX_RX_CLASS_QOS_DATA,
 112        WL12XX_RX_CLASS_BCN_PRBRSP,
 113        WL12XX_RX_CLASS_EAPOL,
 114        WL12XX_RX_CLASS_BA_EVENT,
 115        WL12XX_RX_CLASS_AMSDU,
 116        WL12XX_RX_CLASS_LOGGER,
 117};
 118
 119struct wl1271_rx_descriptor {
 120        __le16 length;
 121        u8  status;
 122        u8  flags;
 123        u8  rate;
 124        u8  channel;
 125        s8  rssi;
 126        u8  snr;
 127        __le32 timestamp;
 128        u8  packet_class;
 129        u8  hlid;
 130        u8  pad_len;
 131        u8  reserved;
 132} __packed;
 133
 134int wlcore_rx(struct wl1271 *wl, struct wl_fw_status *status);
 135u8 wl1271_rate_to_idx(int rate, enum nl80211_band band);
 136int wl1271_rx_filter_enable(struct wl1271 *wl,
 137                            int index, bool enable,
 138                            struct wl12xx_rx_filter *filter);
 139int wl1271_rx_filter_clear_all(struct wl1271 *wl);
 140
 141#endif
 142