/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * File: desc.h
 *
 * Purpose:The header file of descriptor
 *
 * Revision History:
 *
 * Author: Tevin Chen
 *
 * Date: May 21, 1996
 *
 */

#ifndef __DESC_H__
#define __DESC_H__

#include <linux/types.h>
#include <linux/mm.h>
#include "ttype.h"
#include "tether.h"

// max transmit or receive buffer size
#define CB_MAX_BUF_SIZE     2900U       // max buffer size
                                        // NOTE: must be multiple of 4

#define CB_MAX_TX_BUF_SIZE          CB_MAX_BUF_SIZE // max Tx buffer size
#define CB_MAX_RX_BUF_SIZE_NORMAL   CB_MAX_BUF_SIZE // max Rx buffer size when not use Multi-RD

#define CB_BEACON_BUF_SIZE  512U        // default beacon buffer size

#define MAX_TOTAL_SIZE_WITH_ALL_HEADERS CB_MAX_BUF_SIZE

#define MAX_INTERRUPT_SIZE              32

#define RX_BLOCKS           64          // form 0x60 to 0xA0
#define TX_BLOCKS           32          // from 0xA0 to 0xC0

#define CB_MAX_RX_DESC      128         // max # of descriptor
#define CB_MIN_RX_DESC      16          // min # of rx descriptor
#define CB_MAX_TX_DESC      128         // max # of descriptor
#define CB_MIN_TX_DESC      16          // min # of tx descriptor

#define CB_RD_NUM           64          // default # of RD
#define CB_TD_NUM           64          // default # of TD

//
// Bits in the RSR register
//
#define RSR_ADDRBROAD       0x80        // 1000 0000
#define RSR_ADDRMULTI       0x40        // 0100 0000
#define RSR_ADDRUNI         0x00        // 0000 0000
#define RSR_IVLDTYP         0x20        // 0010 0000 , invalid packet type
#define RSR_IVLDLEN         0x10        // 0001 0000 , invalid len (> 2312 byte)
#define RSR_BSSIDOK         0x08        // 0000 1000
#define RSR_CRCOK           0x04        // 0000 0100
#define RSR_BCNSSIDOK       0x02        // 0000 0010
#define RSR_ADDROK          0x01        // 0000 0001

//
// Bits in the new RSR register
//
#define NEWRSR_DECRYPTOK    0x10        // 0001 0000
#define NEWRSR_CFPIND       0x08        // 0000 1000
#define NEWRSR_HWUTSF       0x04        // 0000 0100
#define NEWRSR_BCNHITAID    0x02        // 0000 0010
#define NEWRSR_BCNHITAID0   0x01        // 0000 0001

//
// Bits in the TSR register
//
#define TSR_RETRYTMO        0x08        // 0000 1000
#define TSR_TMO             0x04        // 0000 0100
#define TSR_ACKDATA         0x02        // 0000 0010
#define TSR_VALID           0x01        // 0000 0001

#define CB_PROTOCOL_RESERVED_SECTION    16

// if retrys excess 15 times , tx will abort, and
// if tx fifo underflow, tx will fail
// we should try to resend it
#define CB_MAX_TX_ABORT_RETRY   3

#define FIFOCTL_AUTO_FB_1   0x1000 // 0001 0000 0000 0000
#define FIFOCTL_AUTO_FB_0   0x0800 // 0000 1000 0000 0000
#define FIFOCTL_GRPACK      0x0400 // 0000 0100 0000 0000
#define FIFOCTL_11GA        0x0300 // 0000 0011 0000 0000
#define FIFOCTL_11GB        0x0200 // 0000 0010 0000 0000
#define FIFOCTL_11B         0x0100 // 0000 0001 0000 0000
#define FIFOCTL_11A         0x0000 // 0000 0000 0000 0000
#define FIFOCTL_RTS         0x0080 // 0000 0000 1000 0000
#define FIFOCTL_ISDMA0      0x0040 // 0000 0000 0100 0000
#define FIFOCTL_GENINT      0x0020 // 0000 0000 0010 0000
#define FIFOCTL_TMOEN       0x0010 // 0000 0000 0001 0000
#define FIFOCTL_LRETRY      0x0008 // 0000 0000 0000 1000
#define FIFOCTL_CRCDIS      0x0004 // 0000 0000 0000 0100
#define FIFOCTL_NEEDACK     0x0002 // 0000 0000 0000 0010
#define FIFOCTL_LHEAD       0x0001 // 0000 0000 0000 0001

//WMAC definition Frag Control
#define FRAGCTL_AES         0x0300 // 0000 0011 0000 0000
#define FRAGCTL_TKIP        0x0200 // 0000 0010 0000 0000
#define FRAGCTL_LEGACY      0x0100 // 0000 0001 0000 0000
#define FRAGCTL_NONENCRYPT  0x0000 // 0000 0000 0000 0000
#define FRAGCTL_ENDFRAG     0x0003 // 0000 0000 0000 0011
#define FRAGCTL_MIDFRAG     0x0002 // 0000 0000 0000 0010
#define FRAGCTL_STAFRAG     0x0001 // 0000 0000 0000 0001
#define FRAGCTL_NONFRAG     0x0000 // 0000 0000 0000 0000

#define TYPE_TXDMA0     0
#define TYPE_AC0DMA     1
#define TYPE_ATIMDMA    2
#define TYPE_SYNCDMA    3
#define TYPE_MAXTD      2

#define TYPE_BEACONDMA  4

#define TYPE_RXDMA0     0
#define TYPE_RXDMA1     1
#define TYPE_MAXRD      2

// TD_INFO flags control bit
#define TD_FLAGS_NETIF_SKB               0x01       // check if need release skb
#define TD_FLAGS_PRIV_SKB                0x02       // check if called from private skb(hostap)
#define TD_FLAGS_PS_RETRY                0x04       // check if PS STA frame re-transmit

//
// RsvTime buffer header
//
typedef struct tagSRrvTime_gRTS {
    WORD        wRTSTxRrvTime_ba;
    WORD        wRTSTxRrvTime_aa;
    WORD        wRTSTxRrvTime_bb;
    WORD        wReserved;
    WORD        wTxRrvTime_b;
    WORD        wTxRrvTime_a;
} __attribute__ ((__packed__))
SRrvTime_gRTS, *PSRrvTime_gRTS;

typedef const SRrvTime_gRTS *PCSRrvTime_gRTS;

typedef struct tagSRrvTime_gCTS {
    WORD        wCTSTxRrvTime_ba;
    WORD        wReserved;
    WORD        wTxRrvTime_b;
    WORD        wTxRrvTime_a;
} __attribute__ ((__packed__))
SRrvTime_gCTS, *PSRrvTime_gCTS;

typedef const SRrvTime_gCTS *PCSRrvTime_gCTS;

typedef struct tagSRrvTime_ab {
    WORD        wRTSTxRrvTime;
    WORD        wTxRrvTime;
} __attribute__ ((__packed__))
SRrvTime_ab, *PSRrvTime_ab;

typedef const SRrvTime_ab *PCSRrvTime_ab;

typedef struct tagSRrvTime_atim {
    WORD        wCTSTxRrvTime_ba;
    WORD        wTxRrvTime_a;
} __attribute__ ((__packed__))
SRrvTime_atim, *PSRrvTime_atim;

typedef const SRrvTime_atim *PCSRrvTime_atim;

//
// RTS buffer header
//
typedef struct tagSRTSData {
    WORD    wFrameControl;
    WORD    wDurationID;
    BYTE    abyRA[ETH_ALEN];
    BYTE    abyTA[ETH_ALEN];
} __attribute__ ((__packed__))
SRTSData, *PSRTSData;

typedef const SRTSData *PCSRTSData;

typedef struct tagSRTS_g {
    BYTE        bySignalField_b;
    BYTE        byServiceField_b;
    WORD        wTransmitLength_b;
    BYTE        bySignalField_a;
    BYTE        byServiceField_a;
    WORD        wTransmitLength_a;
    WORD        wDuration_ba;
    WORD        wDuration_aa;
    WORD        wDuration_bb;
    WORD        wReserved;
    SRTSData    Data;
} __attribute__ ((__packed__))
SRTS_g, *PSRTS_g;
typedef const SRTS_g *PCSRTS_g;

typedef struct tagSRTS_g_FB {
    BYTE        bySignalField_b;
    BYTE        byServiceField_b;
    WORD        wTransmitLength_b;
    BYTE        bySignalField_a;
    BYTE        byServiceField_a;
    WORD        wTransmitLength_a;
    WORD        wDuration_ba;
    WORD        wDuration_aa;
    WORD        wDuration_bb;
    WORD        wReserved;
    WORD        wRTSDuration_ba_f0;
    WORD        wRTSDuration_aa_f0;
    WORD        wRTSDuration_ba_f1;
    WORD        wRTSDuration_aa_f1;
    SRTSData    Data;
} __attribute__ ((__packed__))
SRTS_g_FB, *PSRTS_g_FB;

typedef const SRTS_g_FB *PCSRTS_g_FB;

typedef struct tagSRTS_ab {
    BYTE        bySignalField;
    BYTE        byServiceField;
    WORD        wTransmitLength;
    WORD        wDuration;
    WORD        wReserved;
    SRTSData    Data;
} __attribute__ ((__packed__))
SRTS_ab, *PSRTS_ab;

typedef const SRTS_ab *PCSRTS_ab;

typedef struct tagSRTS_a_FB {
    BYTE        bySignalField;
    BYTE        byServiceField;
    WORD        wTransmitLength;
    WORD        wDuration;
    WORD        wReserved;
    WORD        wRTSDuration_f0;
    WORD        wRTSDuration_f1;
    SRTSData    Data;
} __attribute__ ((__packed__))
SRTS_a_FB, *PSRTS_a_FB;

typedef const SRTS_a_FB *PCSRTS_a_FB;

//
// CTS buffer header
//
typedef struct tagSCTSData {
    WORD    wFrameControl;
    WORD    wDurationID;
    BYTE    abyRA[ETH_ALEN];
    WORD    wReserved;
} __attribute__ ((__packed__))
SCTSData, *PSCTSData;

typedef struct tagSCTS {
    BYTE        bySignalField_b;
    BYTE        byServiceField_b;
    WORD        wTransmitLength_b;
    WORD        wDuration_ba;
    WORD        wReserved;
    SCTSData    Data;
} __attribute__ ((__packed__))
SCTS, *PSCTS;

typedef const SCTS *PCSCTS;

typedef struct tagSCTS_FB {
    BYTE        bySignalField_b;
    BYTE        byServiceField_b;
    WORD        wTransmitLength_b;
    WORD        wDuration_ba;
    WORD        wReserved;
    WORD        wCTSDuration_ba_f0;
    WORD        wCTSDuration_ba_f1;
    SCTSData    Data;
} __attribute__ ((__packed__))
SCTS_FB, *PSCTS_FB;

typedef const SCTS_FB *PCSCTS_FB;

//
// Tx FIFO header
//
typedef struct tagSTxBufHead {
    DWORD   adwTxKey[4];
    WORD    wFIFOCtl;
    WORD    wTimeStamp;
    WORD    wFragCtl;
    WORD    wReserved;
} __attribute__ ((__packed__))
STxBufHead, *PSTxBufHead;
typedef const STxBufHead *PCSTxBufHead;

typedef struct tagSTxShortBufHead {
    WORD    wFIFOCtl;
    WORD    wTimeStamp;
} __attribute__ ((__packed__))
STxShortBufHead, *PSTxShortBufHead;
typedef const STxShortBufHead *PCSTxShortBufHead;

//
// Tx data header
//
typedef struct tagSTxDataHead_g {
    BYTE    bySignalField_b;
    BYTE    byServiceField_b;
    WORD    wTransmitLength_b;
    BYTE    bySignalField_a;
    BYTE    byServiceField_a;
    WORD    wTransmitLength_a;
    WORD    wDuration_b;
    WORD    wDuration_a;
    WORD    wTimeStampOff_b;
    WORD    wTimeStampOff_a;
} __attribute__ ((__packed__))
STxDataHead_g, *PSTxDataHead_g;

typedef const STxDataHead_g *PCSTxDataHead_g;

typedef struct tagSTxDataHead_g_FB {
    BYTE    bySignalField_b;
    BYTE    byServiceField_b;
    WORD    wTransmitLength_b;
    BYTE    bySignalField_a;
    BYTE    byServiceField_a;
    WORD    wTransmitLength_a;
    WORD    wDuration_b;
    WORD    wDuration_a;
    WORD    wDuration_a_f0;
    WORD    wDuration_a_f1;
    WORD    wTimeStampOff_b;
    WORD    wTimeStampOff_a;
} __attribute__ ((__packed__))
STxDataHead_g_FB, *PSTxDataHead_g_FB;
typedef const STxDataHead_g_FB *PCSTxDataHead_g_FB;

typedef struct tagSTxDataHead_ab {
    BYTE    bySignalField;
    BYTE    byServiceField;
    WORD    wTransmitLength;
    WORD    wDuration;
    WORD    wTimeStampOff;
} __attribute__ ((__packed__))
STxDataHead_ab, *PSTxDataHead_ab;
typedef const STxDataHead_ab *PCSTxDataHead_ab;

typedef struct tagSTxDataHead_a_FB {
    BYTE    bySignalField;
    BYTE    byServiceField;
    WORD    wTransmitLength;
    WORD    wDuration;
    WORD    wTimeStampOff;
    WORD    wDuration_f0;
    WORD    wDuration_f1;
} __attribute__ ((__packed__))
STxDataHead_a_FB, *PSTxDataHead_a_FB;
typedef const STxDataHead_a_FB *PCSTxDataHead_a_FB;

//
// MICHDR data header
//
typedef struct tagSMICHDRHead {
    DWORD   adwHDR0[4];
    DWORD   adwHDR1[4];
    DWORD   adwHDR2[4];
} __attribute__ ((__packed__))
SMICHDRHead, *PSMICHDRHead;

typedef const SMICHDRHead *PCSMICHDRHead;

typedef struct tagSBEACONCtl {
    DWORD   BufReady : 1;
    DWORD   TSF : 15;
    DWORD   BufLen : 11;
    DWORD   Reserved : 5;
} __attribute__ ((__packed__))
SBEACONCtl;

typedef struct tagSSecretKey {
    DWORD   dwLowDword;
    BYTE    byHighByte;
} __attribute__ ((__packed__))
SSecretKey;

typedef struct tagSKeyEntry {
    BYTE  abyAddrHi[2];
    WORD  wKCTL;
    BYTE  abyAddrLo[4];
    DWORD dwKey0[4];
    DWORD dwKey1[4];
    DWORD dwKey2[4];
    DWORD dwKey3[4];
    DWORD dwKey4[4];
} __attribute__ ((__packed__))
SKeyEntry;

#endif /* __DESC_H__ */