pc.h

Linux内核源代码 为压缩文件 是<<Linux内核>>一书中的源代码

/*
 *
 * Copyright (C) Eicon Technology Corporation, 2000.
 *
 * This source file is supplied for the exclusive use with Eicon
 * Technology Corporation's range of DIVA Server Adapters.
 *
 * Eicon File Revision :    1.2  
 *
 * 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, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY 
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */


#ifndef PC_H_INCLUDED
#define PC_H_INCLUDED


#define byte unsigned char
#define word unsigned short
#define dword unsigned long
#if !defined(MIN)
#define MIN(a,b) ((a)>(b) ? (b) : (a))
#endif
#if !defined(MAX)
#define MAX(a,b) ((a)>(b) ? (a) : (b))
#endif

/*------------------------------------------------------------------*/
/* buffer definition                                                */
/*------------------------------------------------------------------*/

typedef struct {
  word length;          /* length of data/parameter field           */
  byte P[270];          /* data/parameter field                     */
} PBUFFER;

/*------------------------------------------------------------------*/
/* dual port ram structure                                          */
/*------------------------------------------------------------------*/

struct dual
{
  byte Req;             /* request register                         */
  byte ReqId;           /* request task/entity identification       */
  byte Rc;              /* return code register                     */
  byte RcId;            /* return code task/entity identification   */
  byte Ind;             /* Indication register                      */
  byte IndId;           /* Indication task/entity identification    */
  byte IMask;           /* Interrupt Mask Flag                      */
  byte RNR;             /* Receiver Not Ready (set by PC)           */
  byte XLock;           /* XBuffer locked Flag                      */
  byte Int;             /* ISDN-S interrupt                         */
  byte ReqCh;           /* Channel field for layer-3 Requests       */
  byte RcCh;            /* Channel field for layer-3 Returncodes    */
  byte IndCh;           /* Channel field for layer-3 Indications    */
  byte MInd;            /* more data indication field               */
  word MLength;         /* more data total packet length            */
  byte ReadyInt;        /* request field for ready interrupt        */
  byte SWReg;           /* Software register for special purposes   */  
  byte Reserved[11];    /* reserved space                           */
  byte InterfaceType;   /* interface type 1=16K interface           */
  word Signature;       /* ISDN-S adapter Signature (GD)            */
  PBUFFER XBuffer;      /* Transmit Buffer                          */
  PBUFFER RBuffer;      /* Receive Buffer                           */
};

/*------------------------------------------------------------------*/
/* SWReg Values (0 means no command)                                */
/*------------------------------------------------------------------*/
#define SWREG_DIE_WITH_LEDON  0x01
#define SWREG_HALT_CPU        0x02 /* Push CPU into a while(1) loop */         

/*------------------------------------------------------------------*/
/* Id Fields Coding                                                 */
/*------------------------------------------------------------------*/

#define ID_MASK 0xe0    /* Mask for the ID field                    */
#define GL_ERR_ID 0x1f  /* ID for error reporting on global requests*/

#define DSIG_ID  0x00   /* ID for D-channel signaling               */
#define NL_ID    0x20   /* ID for network-layer access (B or D)     */
#define BLLC_ID  0x60   /* ID for B-channel link level access       */
#define TASK_ID  0x80   /* ID for dynamic user tasks                */
#define TIMER_ID 0xa0   /* ID for timer task                        */
#define TEL_ID   0xc0   /* ID for telephone support                 */
#define MAN_ID   0xe0   /* ID for management                        */

/*------------------------------------------------------------------*/
/* ASSIGN and REMOVE requests are the same for all entities         */
/*------------------------------------------------------------------*/

#define ASSIGN  0x01
#define UREMOVE  0xfe   /* without returncode */  
#define REMOVE  0xff

/*------------------------------------------------------------------*/
/* Timer Interrupt Task Interface                                   */
/*------------------------------------------------------------------*/

#define ASSIGN_TIM 0x01
#define REMOVE_TIM 0xff

/*------------------------------------------------------------------*/
/* dynamic user task interface                                      */
/*------------------------------------------------------------------*/

#define ASSIGN_TSK 0x01
#define REMOVE_TSK 0xff

#define LOAD 0xf0
#define RELOCATE 0xf1
#define START 0xf2
#define LOAD2 0xf3
#define RELOCATE2 0xf4

/*------------------------------------------------------------------*/
/* dynamic user task messages                                       */
/*------------------------------------------------------------------*/

#define TSK_B2          0x0000
#define TSK_WAKEUP      0x2000
#define TSK_TIMER       0x4000
#define TSK_TSK         0x6000
#define TSK_PC          0xe000

/*------------------------------------------------------------------*/
/* LL management primitives                                         */
/*------------------------------------------------------------------*/

#define ASSIGN_LL 1     /* assign logical link                      */
#define REMOVE_LL 0xff  /* remove logical link                      */

/*------------------------------------------------------------------*/
/* LL service primitives                                            */
/*------------------------------------------------------------------*/

#define LL_UDATA 1      /* link unit data request/indication        */
#define LL_ESTABLISH 2  /* link establish request/indication        */
#define LL_RELEASE 3    /* link release request/indication          */
#define LL_DATA 4       /* data request/indication                  */
#define LL_LOCAL 5      /* switch to local operation (COM only)     */
#define LL_DATA_PEND 5  /* data pending indication (SDLC SHM only)  */
#define LL_REMOTE 6     /* switch to remote operation (COM only)    */
#define LL_TEST 8       /* link test request                        */
#define LL_MDATA 9      /* more data request/indication             */
#define LL_BUDATA 10    /* broadcast unit data request/indication   */
#define LL_XID 12       /* XID command request/indication           */