/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Bus.h,v 1.18 2001/02/12 01:25:23 tsi Exp $ */
/*
 * Copyright (c) 1997 by The XFree86 Project, Inc.
 */

/*
 * This file contains definitions of the bus-related data structures/types.
 * Everything contained here is private to xf86Bus.c.  In particular the
 * video drivers must not include this file.
 */

#ifndef _XF86_BUS_H
#define _XF86_BUS_H

#include "xf86pciBus.h"
#ifdef __sparc__
#include "xf86sbusBus.h"
#endif

typedef struct racInfo {
    xf86AccessPtr mem_new;
    xf86AccessPtr io_new;
    xf86AccessPtr io_mem_new;
    xf86SetAccessFuncPtr old;
} AccessFuncRec, *AccessFuncPtr;


typedef struct {
    DriverPtr                   driver;
    int                         chipset;
    int                         entityProp;
    EntityProc                  entityInit;
    EntityProc                  entityEnter;
    EntityProc                  entityLeave;
    pointer                     private;
    resPtr                      resources;
    Bool                        active;
    Bool                        inUse;
    BusRec                      bus;
    EntityAccessPtr             access;
    AccessFuncPtr               rac;
    pointer                     busAcc;
    int                         lastScrnFlag;
    DevUnion *                  entityPrivates;
    int                         numInstances;
    GDevPtr *                   devices;   
} EntityRec, *EntityPtr;

/* asynchronous event handling */
#ifdef async
typedef struct _AsyncQRec {
    void (*func)(pointer);
    pointer arg;
    struct _AsyncQRec *next;
} AsyncQRec, *AsyncQPtr;
#endif

#define NO_SEPARATE_IO_FROM_MEM 0x0001
#define NO_SEPARATE_MEM_FROM_IO 0x0002
#define NEED_VGA_ROUTED 0x0004
#define NEED_VGA_ROUTED_SETUP 0x0008
#define NEED_MEM 0x0010
#define NEED_IO  0x0020
#define NEED_MEM_SHARED 0x0040
#define NEED_IO_SHARED 0x0080
#define ACCEL_IS_SHARABLE 0x0100
#define IS_SHARED_ACCEL 0x0200
#define SA_PRIM_INIT_DONE 0x0400

#define NEED_SHARED (NEED_MEM_SHARED | NEED_IO_SHARED)

#define busType bus.type
#define pciBusId bus.id.pci
#define isaBusId bus.id.isa
#define sbusBusId bus.id.sbus

struct x_BusAccRec;
typedef void (*BusAccProcPtr)(struct x_BusAccRec *ptr);

typedef struct x_BusAccRec {
    BusAccProcPtr set_f;
    BusAccProcPtr enable_f;
    BusAccProcPtr disable_f;
    BusAccProcPtr save_f;
    BusAccProcPtr restore_f;
    struct x_BusAccRec *current; /* pointer to bridge open on this bus */
    struct x_BusAccRec *primary; /* pointer to the bus connecting to this */
    struct x_BusAccRec *next;    /* this links the different buses together */
    BusType type;
    BusType busdep_type;
    /* Bus-specific fields */
    union {
	struct {
	    int bus;
	    int primary_bus;
	    PCITAG acc;
	    pciBridgeSave save;
	    void (*func)(PCITAG,int,CARD32,CARD32);
	} pci;
    } busdep;
} BusAccRec, *BusAccPtr;

/* state change notification callback */
typedef struct _stateChange {
    xf86StateChangeNotificationCallbackFunc func;
    pointer arg;
    struct _stateChange *next;
} StateChangeNotificationRec, *StateChangeNotificationPtr;


extern EntityPtr *xf86Entities;
extern int xf86NumEntities;
extern xf86AccessRec AccessNULL;
extern BusRec primaryBus;
extern resPtr Acc;
extern resPtr osRes;
extern resPtr ResRange;
extern BusAccPtr xf86BusAccInfo;

int xf86AllocateEntity(void);
BusType StringToBusType(const char* busID, const char **retID);
memType ChkConflict(resRange *rgp, resPtr res, xf86State state);
Bool xf86IsSubsetOf(resRange range, resPtr list);
Bool xf86IsListSubsetOf(resPtr list, resPtr BaseList);
resPtr xf86ExtractTypeFromList(resPtr list, unsigned long type);
resPtr findIntersect(resRange Range, resPtr list);
resPtr xf86FindIntersect(resRange Range, resPtr list);
void RemoveOverlaps(resPtr target, resPtr list, Bool pow2Alignment,
		    Bool useEstimated);
void xf86ConvertListToHost(int entityIndex, resPtr list);

#endif /* _XF86_BUS_H */
