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- drivers
- staging
- vt6655
- desc.h
/*
* 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"
/*--------------------- Export Definitions -------------------------*/
#define B_OWNED_BY_CHIP 1 //
#define B_OWNED_BY_HOST 0 //
//
// 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 TSR0 register
//
#define TSR0_PWRSTS1_2 0xC0 // 1100 0000
#define TSR0_PWRSTS7 0x20 // 0010 0000
#define TSR0_NCR 0x1F // 0001 1111
//
// Bits in the TSR1 register
//
#define TSR1_TERR 0x80 // 1000 0000
#define TSR1_PWRSTS4_6 0x70 // 0111 0000
#define TSR1_RETRYTMO 0x08 // 0000 1000
#define TSR1_TMO 0x04 // 0000 0100
#define TSR1_PWRSTS3 0x02 // 0000 0010
#define ACK_DATA 0x01 // 0000 0000
//
// Bits in the TCR register
//
#define EDMSDU 0x04 // 0000 0100 end of sdu
#define TCR_EDP 0x02 // 0000 0010 end of packet
#define TCR_STP 0x01 // 0000 0001 start of packet
// 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 CB_MAX_RX_DESC 128 // max # of descriptor
#define CB_MIN_RX_DESC 16 // min # of rx descriptor
#define CB_MAX_TX_DESC 64 // max # of descriptor
#define CB_MIN_TX_DESC 16 // min # of tx descriptor
#define CB_MAX_RECEIVED_PACKETS 16 // max # of received packets at one time
// limit our receive routine to indicating
// this many at a time for 2 reasons:
// 1. driver flow control to protocol layer
// 2. limit the time used in ISR routine
#define CB_EXTRA_RD_NUM 32 // default # of Extra RD
#define CB_RD_NUM 32 // default # of RD
#define CB_TD_NUM 32 // default # of TD
// max number of physical segments
// in a single NDIS packet. Above this threshold, the packet
// is copied into a single physically contiguous buffer
#define CB_MAX_SEGMENT 4
#define CB_MIN_MAP_REG_NUM 4
#define CB_MAX_MAP_REG_NUM CB_MAX_TX_DESC
#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
#ifdef __BIG_ENDIAN
// WMAC definition FIFO Control
#define FIFOCTL_AUTO_FB_1 0x0010 // 0001 0000 0000 0000
#define FIFOCTL_AUTO_FB_0 0x0008 // 0000 1000 0000 0000
#define FIFOCTL_GRPACK 0x0004 // 0000 0100 0000 0000
#define FIFOCTL_11GA 0x0003 // 0000 0011 0000 0000
#define FIFOCTL_11GB 0x0002 // 0000 0010 0000 0000
#define FIFOCTL_11B 0x0001 // 0000 0001 0000 0000
#define FIFOCTL_11A 0x0000 // 0000 0000 0000 0000
#define FIFOCTL_RTS 0x8000 // 0000 0000 1000 0000
#define FIFOCTL_ISDMA0 0x4000 // 0000 0000 0100 0000
#define FIFOCTL_GENINT 0x2000 // 0000 0000 0010 0000
#define FIFOCTL_TMOEN 0x1000 // 0000 0000 0001 0000
#define FIFOCTL_LRETRY 0x0800 // 0000 0000 0000 1000
#define FIFOCTL_CRCDIS 0x0400 // 0000 0000 0000 0100
#define FIFOCTL_NEEDACK 0x0200 // 0000 0000 0000 0010
#define FIFOCTL_LHEAD 0x0100 // 0000 0000 0000 0001
//WMAC definition Frag Control
#define FRAGCTL_AES 0x0003 // 0000 0011 0000 0000
#define FRAGCTL_TKIP 0x0002 // 0000 0010 0000 0000
#define FRAGCTL_LEGACY 0x0001 // 0000 0001 0000 0000
#define FRAGCTL_NONENCRYPT 0x0000 // 0000 0000 0000 0000
//#define FRAGCTL_AC3 0x0C00 // 0000 0000 0000 1100
//#define FRAGCTL_AC2 0x0800 // 0000 0000 0000 1000
//#define FRAGCTL_AC1 0x0400 // 0000 0000 0000 0100
//#define FRAGCTL_AC0 0x0000 // 0000 0000 0000 0000
#define FRAGCTL_ENDFRAG 0x0300 // 0000 0000 0000 0011
#define FRAGCTL_MIDFRAG 0x0200 // 0000 0000 0000 0010
#define FRAGCTL_STAFRAG 0x0100 // 0000 0000 0000 0001
#define FRAGCTL_NONFRAG 0x0000 // 0000 0000 0000 0000
#else
#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_AC3 0x000C // 0000 0000 0000 1100
//#define FRAGCTL_AC2 0x0008 // 0000 0000 0000 1000
//#define FRAGCTL_AC1 0x0004 // 0000 0000 0000 0100
//#define FRAGCTL_AC0 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
#endif // #ifdef __BIG_ENDIAN
//#define TYPE_AC0DMA 0
//#define TYPE_TXDMA0 1
#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
//#define TD_FLAGS_NETIF_SKB 0x04
/*--------------------- Export Types ------------------------------*/
// ref_sk_buff is used for mapping the skb structure between pre-built driver-obj & running kernel.
// Since different kernel version (2.4x) may change skb structure, i.e. pre-built driver-obj
// may link to older skb that leads error.
typedef struct tagDEVICE_RD_INFO {
struct sk_buff* skb;
dma_addr_t skb_dma;
dma_addr_t curr_desc;
} DEVICE_RD_INFO, *PDEVICE_RD_INFO;
/*
static inline PDEVICE_RD_INFO alloc_rd_info(void) {
PDEVICE_RD_INFO ptr;
ptr = kmalloc(sizeof(DEVICE_RD_INFO), GFP_ATOMIC);
if (ptr == NULL)
return NULL;
else {
memset(ptr,0,sizeof(DEVICE_RD_INFO));
return ptr;
}
}
*/
/*
typedef struct tagRDES0 {
unsigned short wResCount;
unsigned short wf1Owner ;
// unsigned short f15Reserved : 15;
// unsigned short f1Owner : 1;
} __attribute__ ((__packed__))
SRDES0;
*/
#ifdef __BIG_ENDIAN
typedef struct tagRDES0 {
volatile unsigned short wResCount;
union {
volatile u16 f15Reserved;
struct {
volatile u8 f8Reserved1;
volatile u8 f1Owner:1;
volatile u8 f7Reserved:7;
} __attribute__ ((__packed__));
} __attribute__ ((__packed__));
} __attribute__ ((__packed__))
SRDES0, *PSRDES0;
#else
typedef struct tagRDES0 {
unsigned short wResCount;
unsigned short f15Reserved : 15;
unsigned short f1Owner : 1;
} __attribute__ ((__packed__))
SRDES0;
#endif
typedef struct tagRDES1 {
unsigned short wReqCount;
unsigned short wReserved;
} __attribute__ ((__packed__))
SRDES1;
//
// Rx descriptor
//
typedef struct tagSRxDesc {
volatile SRDES0 m_rd0RD0;
volatile SRDES1 m_rd1RD1;
volatile u32 buff_addr;
volatile u32 next_desc;
struct tagSRxDesc *next;//4 bytes
volatile PDEVICE_RD_INFO pRDInfo;//4 bytes
volatile u32 Reserved[2];//8 bytes
} __attribute__ ((__packed__))
SRxDesc, *PSRxDesc;
typedef const SRxDesc *PCSRxDesc;
#ifdef __BIG_ENDIAN
/*
typedef struct tagTDES0 {
volatile unsigned char byTSR0;
volatile unsigned char byTSR1;
volatile unsigned short wOwner_Txtime;
// volatile unsigned short f15Txtime : 15;
// volatile unsigned short f1Owner:1;
} __attribute__ ((__packed__))
STDES0;
*/
typedef struct tagTDES0 {
volatile unsigned char byTSR0;
volatile unsigned char byTSR1;
union {
volatile u16 f15Txtime;
struct {
volatile u8 f8Reserved1;
volatile u8 f1Owner:1;
volatile u8 f7Reserved:7;
} __attribute__ ((__packed__));
} __attribute__ ((__packed__));
} __attribute__ ((__packed__))
STDES0, PSTDES0;
#else
typedef struct tagTDES0 {
volatile unsigned char byTSR0;
volatile unsigned char byTSR1;
volatile unsigned short f15Txtime : 15;
volatile unsigned short f1Owner:1;
} __attribute__ ((__packed__))
STDES0;
#endif
typedef struct tagTDES1 {
volatile unsigned short wReqCount;
volatile unsigned char byTCR;
volatile unsigned char byReserved;
} __attribute__ ((__packed__))
STDES1;
typedef struct tagDEVICE_TD_INFO{
struct sk_buff* skb;
unsigned char *buf;
dma_addr_t skb_dma;
dma_addr_t buf_dma;
dma_addr_t curr_desc;
unsigned long dwReqCount;
unsigned long dwHeaderLength;
unsigned char byFlags;
} DEVICE_TD_INFO, *PDEVICE_TD_INFO;
/*
static inline PDEVICE_TD_INFO alloc_td_info(void) {
PDEVICE_TD_INFO ptr;
ptr = kmalloc(sizeof(DEVICE_TD_INFO),GFP_ATOMIC);
if (ptr == NULL)
return NULL;
else {
memset(ptr,0,sizeof(DEVICE_TD_INFO));
return ptr;
}
}
*/
//
// transmit descriptor
//
typedef struct tagSTxDesc {
volatile STDES0 m_td0TD0;
volatile STDES1 m_td1TD1;
volatile u32 buff_addr;
volatile u32 next_desc;
struct tagSTxDesc* next; //4 bytes
volatile PDEVICE_TD_INFO pTDInfo;//4 bytes
volatile u32 Reserved[2];//8 bytes
} __attribute__ ((__packed__))
STxDesc, *PSTxDesc;
typedef const STxDesc *PCSTxDesc;
typedef struct tagSTxSyncDesc {
volatile STDES0 m_td0TD0;
volatile STDES1 m_td1TD1;
volatile u32 buff_addr; // pointer to logical buffer
volatile u32 next_desc; // pointer to next logical descriptor
volatile unsigned short m_wFIFOCtl;
volatile unsigned short m_wTimeStamp;
struct tagSTxSyncDesc* next; //4 bytes
volatile PDEVICE_TD_INFO pTDInfo;//4 bytes
volatile u32 m_dwReserved2;
} __attribute__ ((__packed__))
STxSyncDesc, *PSTxSyncDesc;
typedef const STxSyncDesc *PCSTxSyncDesc;
//
// RsvTime buffer header
//
typedef struct tagSRrvTime_gRTS {
unsigned short wRTSTxRrvTime_ba;
unsigned short wRTSTxRrvTime_aa;
unsigned short wRTSTxRrvTime_bb;
unsigned short wReserved;
unsigned short wTxRrvTime_b;
unsigned short wTxRrvTime_a;
}__attribute__ ((__packed__))
SRrvTime_gRTS, *PSRrvTime_gRTS;
typedef const SRrvTime_gRTS *PCSRrvTime_gRTS;
typedef struct tagSRrvTime_gCTS {
unsigned short wCTSTxRrvTime_ba;
unsigned short wReserved;
unsigned short wTxRrvTime_b;
unsigned short wTxRrvTime_a;
}__attribute__ ((__packed__))
SRrvTime_gCTS, *PSRrvTime_gCTS;
typedef const SRrvTime_gCTS *PCSRrvTime_gCTS;
typedef struct tagSRrvTime_ab {
unsigned short wRTSTxRrvTime;
unsigned short wTxRrvTime;
}__attribute__ ((__packed__))
SRrvTime_ab, *PSRrvTime_ab;
typedef const SRrvTime_ab *PCSRrvTime_ab;
typedef struct tagSRrvTime_atim {
unsigned short wCTSTxRrvTime_ba;
unsigned short wTxRrvTime_a;
}__attribute__ ((__packed__))
SRrvTime_atim, *PSRrvTime_atim;
typedef const SRrvTime_atim *PCSRrvTime_atim;
//
// RTS buffer header
//
typedef struct tagSRTSData {
unsigned short wFrameControl;
unsigned short wDurationID;
unsigned char abyRA[ETH_ALEN];
unsigned char abyTA[ETH_ALEN];
}__attribute__ ((__packed__))
SRTSData, *PSRTSData;
typedef const SRTSData *PCSRTSData;
typedef struct tagSRTS_g {
unsigned char bySignalField_b;
unsigned char byServiceField_b;
unsigned short wTransmitLength_b;
unsigned char bySignalField_a;
unsigned char byServiceField_a;
unsigned short wTransmitLength_a;
unsigned short wDuration_ba;
unsigned short wDuration_aa;
unsigned short wDuration_bb;
unsigned short wReserved;
SRTSData Data;
}__attribute__ ((__packed__))
SRTS_g, *PSRTS_g;
typedef const SRTS_g *PCSRTS_g;
typedef struct tagSRTS_g_FB {
unsigned char bySignalField_b;
unsigned char byServiceField_b;
unsigned short wTransmitLength_b;
unsigned char bySignalField_a;
unsigned char byServiceField_a;
unsigned short wTransmitLength_a;
unsigned short wDuration_ba;
unsigned short wDuration_aa;
unsigned short wDuration_bb;
unsigned short wReserved;
unsigned short wRTSDuration_ba_f0;
unsigned short wRTSDuration_aa_f0;
unsigned short wRTSDuration_ba_f1;
unsigned short 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 {
unsigned char bySignalField;
unsigned char byServiceField;
unsigned short wTransmitLength;
unsigned short wDuration;
unsigned short wReserved;
SRTSData Data;
}__attribute__ ((__packed__))
SRTS_ab, *PSRTS_ab;
typedef const SRTS_ab *PCSRTS_ab;
typedef struct tagSRTS_a_FB {
unsigned char bySignalField;
unsigned char byServiceField;
unsigned short wTransmitLength;
unsigned short wDuration;
unsigned short wReserved;
unsigned short wRTSDuration_f0;
unsigned short 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 {
unsigned short wFrameControl;
unsigned short wDurationID;
unsigned char abyRA[ETH_ALEN];
unsigned short wReserved;
}__attribute__ ((__packed__))
SCTSData, *PSCTSData;
typedef struct tagSCTS {
unsigned char bySignalField_b;
unsigned char byServiceField_b;
unsigned short wTransmitLength_b;
unsigned short wDuration_ba;
unsigned short wReserved;
SCTSData Data;
}__attribute__ ((__packed__))
SCTS, *PSCTS;
typedef const SCTS *PCSCTS;
typedef struct tagSCTS_FB {
unsigned char bySignalField_b;
unsigned char byServiceField_b;
unsigned short wTransmitLength_b;
unsigned short wDuration_ba;
unsigned short wReserved;
unsigned short wCTSDuration_ba_f0;
unsigned short wCTSDuration_ba_f1;
SCTSData Data;
}__attribute__ ((__packed__))
SCTS_FB, *PSCTS_FB;
typedef const SCTS_FB *PCSCTS_FB;
//
// Tx FIFO header
//
typedef struct tagSTxBufHead {
u32 adwTxKey[4];
unsigned short wFIFOCtl;
unsigned short wTimeStamp;
unsigned short wFragCtl;
unsigned char byTxPower;
unsigned char wReserved;
}__attribute__ ((__packed__))
STxBufHead, *PSTxBufHead;
typedef const STxBufHead *PCSTxBufHead;
typedef struct tagSTxShortBufHead {
unsigned short wFIFOCtl;
unsigned short wTimeStamp;
}__attribute__ ((__packed__))
STxShortBufHead, *PSTxShortBufHead;
typedef const STxShortBufHead *PCSTxShortBufHead;
//
// Tx data header
//
typedef struct tagSTxDataHead_g {
unsigned char bySignalField_b;
unsigned char byServiceField_b;
unsigned short wTransmitLength_b;
unsigned char bySignalField_a;
unsigned char byServiceField_a;
unsigned short wTransmitLength_a;
unsigned short wDuration_b;
unsigned short wDuration_a;
unsigned short wTimeStampOff_b;
unsigned short wTimeStampOff_a;
}__attribute__ ((__packed__))
STxDataHead_g, *PSTxDataHead_g;
typedef const STxDataHead_g *PCSTxDataHead_g;
typedef struct tagSTxDataHead_g_FB {
unsigned char bySignalField_b;
unsigned char byServiceField_b;
unsigned short wTransmitLength_b;
unsigned char bySignalField_a;
unsigned char byServiceField_a;
unsigned short wTransmitLength_a;
unsigned short wDuration_b;
unsigned short wDuration_a;
unsigned short wDuration_a_f0;
unsigned short wDuration_a_f1;
unsigned short wTimeStampOff_b;
unsigned short wTimeStampOff_a;
}__attribute__ ((__packed__))
STxDataHead_g_FB, *PSTxDataHead_g_FB;
typedef const STxDataHead_g_FB *PCSTxDataHead_g_FB;
typedef struct tagSTxDataHead_ab {
unsigned char bySignalField;
unsigned char byServiceField;
unsigned short wTransmitLength;
unsigned short wDuration;
unsigned short wTimeStampOff;
}__attribute__ ((__packed__))
STxDataHead_ab, *PSTxDataHead_ab;
typedef const STxDataHead_ab *PCSTxDataHead_ab;
typedef struct tagSTxDataHead_a_FB {
unsigned char bySignalField;
unsigned char byServiceField;
unsigned short wTransmitLength;
unsigned short wDuration;
unsigned short wTimeStampOff;
unsigned short wDuration_f0;
unsigned short wDuration_f1;
}__attribute__ ((__packed__))
STxDataHead_a_FB, *PSTxDataHead_a_FB;
typedef const STxDataHead_a_FB *PCSTxDataHead_a_FB;
//
// MICHDR data header
//
typedef struct tagSMICHDRHead {
u32 adwHDR0[4];
u32 adwHDR1[4];
u32 adwHDR2[4];
}__attribute__ ((__packed__))
SMICHDRHead, *PSMICHDRHead;
typedef const SMICHDRHead *PCSMICHDRHead;
typedef struct tagSBEACONCtl {
u32 BufReady : 1;
u32 TSF : 15;
u32 BufLen : 11;
u32 Reserved : 5;
}__attribute__ ((__packed__))
SBEACONCtl;
typedef struct tagSSecretKey {
u32 dwLowDword;
unsigned char byHighByte;
}__attribute__ ((__packed__))
SSecretKey;
typedef struct tagSKeyEntry {
unsigned char abyAddrHi[2];
unsigned short wKCTL;
unsigned char abyAddrLo[4];
u32 dwKey0[4];
u32 dwKey1[4];
u32 dwKey2[4];
u32 dwKey3[4];
u32 dwKey4[4];
}__attribute__ ((__packed__))
SKeyEntry;
/*--------------------- Export Macros ------------------------------*/
/*--------------------- Export Classes ----------------------------*/
/*--------------------- Export Variables --------------------------*/
/*--------------------- Export Functions --------------------------*/
#endif // __DESC_H__