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/*
* This file is part of wl1271
*
* Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
* Copyright (C) 2008-2009 Nokia Corporation
*
* Contact: Luciano Coelho <luciano.coelho@nokia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#ifndef __RX_H__
#define __RX_H__
#include <linux/bitops.h>
#define WL1271_RX_MAX_RSSI -30
#define WL1271_RX_MIN_RSSI -95
#define SHORT_PREAMBLE_BIT BIT(0)
#define OFDM_RATE_BIT BIT(6)
#define PBCC_RATE_BIT BIT(7)
#define PLCP_HEADER_LENGTH 8
#define RX_DESC_PACKETID_SHIFT 11
#define RX_MAX_PACKET_ID 3
#define NUM_RX_PKT_DESC_MOD_MASK 7
#define RX_DESC_VALID_FCS 0x0001
#define RX_DESC_MATCH_RXADDR1 0x0002
#define RX_DESC_MCAST 0x0004
#define RX_DESC_STAINTIM 0x0008
#define RX_DESC_VIRTUAL_BM 0x0010
#define RX_DESC_BCAST 0x0020
#define RX_DESC_MATCH_SSID 0x0040
#define RX_DESC_MATCH_BSSID 0x0080
#define RX_DESC_ENCRYPTION_MASK 0x0300
#define RX_DESC_MEASURMENT 0x0400
#define RX_DESC_SEQNUM_MASK 0x1800
#define RX_DESC_MIC_FAIL 0x2000
#define RX_DESC_DECRYPT_FAIL 0x4000
/*
* RX Descriptor flags:
*
* Bits 0-1 - band
* Bit 2 - STBC
* Bit 3 - A-MPDU
* Bit 4 - HT
* Bits 5-7 - encryption
*/
#define WL1271_RX_DESC_BAND_MASK 0x03
#define WL1271_RX_DESC_ENCRYPT_MASK 0xE0
#define WL1271_RX_DESC_BAND_BG 0x00
#define WL1271_RX_DESC_BAND_J 0x01
#define WL1271_RX_DESC_BAND_A 0x02
#define WL1271_RX_DESC_STBC BIT(2)
#define WL1271_RX_DESC_A_MPDU BIT(3)
#define WL1271_RX_DESC_HT BIT(4)
#define WL1271_RX_DESC_ENCRYPT_WEP 0x20
#define WL1271_RX_DESC_ENCRYPT_TKIP 0x40
#define WL1271_RX_DESC_ENCRYPT_AES 0x60
#define WL1271_RX_DESC_ENCRYPT_GEM 0x80
/*
* RX Descriptor status
*
* Bits 0-2 - error code
* Bits 3-5 - process_id tag (AP mode FW)
* Bits 6-7 - reserved
*/
#define WL1271_RX_DESC_STATUS_MASK 0x03
#define WL1271_RX_DESC_SUCCESS 0x00
#define WL1271_RX_DESC_DECRYPT_FAIL 0x01
#define WL1271_RX_DESC_MIC_FAIL 0x02
#define WL1271_RX_DESC_DRIVER_RX_Q_FAIL 0x03
#define RX_MEM_BLOCK_MASK 0xFF
#define RX_BUF_SIZE_MASK 0xFFF00
#define RX_BUF_SIZE_SHIFT_DIV 6
#define ALIGNED_RX_BUF_SIZE_MASK 0xFFFF00
#define ALIGNED_RX_BUF_SIZE_SHIFT 8
/* If set, the start of IP payload is not 4 bytes aligned */
#define RX_BUF_UNALIGNED_PAYLOAD BIT(20)
/* Describes the alignment state of a Rx buffer */
enum wl_rx_buf_align {
WLCORE_RX_BUF_ALIGNED,
WLCORE_RX_BUF_UNALIGNED,
WLCORE_RX_BUF_PADDED,
};
enum {
WL12XX_RX_CLASS_UNKNOWN,
WL12XX_RX_CLASS_MANAGEMENT,
WL12XX_RX_CLASS_DATA,
WL12XX_RX_CLASS_QOS_DATA,
WL12XX_RX_CLASS_BCN_PRBRSP,
WL12XX_RX_CLASS_EAPOL,
WL12XX_RX_CLASS_BA_EVENT,
WL12XX_RX_CLASS_AMSDU,
WL12XX_RX_CLASS_LOGGER,
};
struct wl1271_rx_descriptor {
__le16 length;
u8 status;
u8 flags;
u8 rate;
u8 channel;
s8 rssi;
u8 snr;
__le32 timestamp;
u8 packet_class;
u8 hlid;
u8 pad_len;
u8 reserved;
} __packed;
void wl12xx_rx(struct wl1271 *wl, struct wl12xx_fw_status *status);
u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band);
#endif
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