dha.h

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· C头文件 代码 · 共 96 行

/*
 * VIDIX Direct Hardware Access (DHA).
 * Copyright (C) 2002 Nick Kurshev
 *
 * This file is part of MPlayer.
 *
 * MPlayer 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.
 *
 * MPlayer 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 MPlayer; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 *   1996/10/27	- Robin Cutshaw ([e-mail])
 *		  XFree86 3.3.3 implementation
 *   1999	- Øyvind Aabling.
 *   		  Modified for GATOS/win/gfxdump.
 *		  
 *   2002	- library implementation by Nick Kurshev
 *		- dhahelper and some changes by Alex Beregszaszi
 *   
 *   Supported O/S's:	SVR4, UnixWare, SCO, Solaris,
 *			FreeBSD, NetBSD, 386BSD, BSDI BSD/386,
 *			Linux, Mach/386, ISC
 *			DOS (WATCOM 9.5 compiler), Win9x (with mapdev.vxd)
 *   Original location: www.linuxvideo.org/gatos
 */

#ifndef LIBDHA_H
#define LIBDHA_H

#ifdef __cplusplus
extern "C" {
#endif

#define MAX_DEV_PER_VENDOR_CFG1 64
#define MAX_PCI_DEVICES_PER_BUS 32
#define MAX_PCI_DEVICES         64
#define PCI_MULTIFUNC_DEV	0x80
#define PCI_COMMAND_IO          0x1     /* Enable response to I/O space */

typedef struct pciinfo_s
{
  int		bus,card,func;			/* PCI/AGP bus:card:func */
  unsigned short command;                       /* Device control register */
  unsigned short vendor,device;			/* Card vendor+device ID */
  unsigned	base0,base1,base2,baserom;	/* Memory and I/O base addresses */
//  unsigned	base0_limit, base1_limit, base2_limit, baserom_limit;
}pciinfo_t;

/* needed for mga_vid */
extern int pci_config_read(unsigned char bus, unsigned char dev, unsigned char func,
			unsigned char cmd, int len, unsigned long *val);
			/* Fill array pci_list which must have size MAX_PCI_DEVICES
			   and return 0 if sucessful */
extern int  pci_scan(pciinfo_t *pci_list,unsigned *num_card);


	    /* Enables/disables accessing to IO space from application side.
	       Should return 0 if o'k or errno on error. */
extern int enable_app_io( void );
extern int disable_app_io( void );

extern unsigned char  INPORT8(unsigned idx);
extern unsigned short INPORT16(unsigned idx);
extern unsigned       INPORT32(unsigned idx);
#define INPORT(idx) INPORT32(idx)
extern void          OUTPORT8(unsigned idx,unsigned char val);
extern void          OUTPORT16(unsigned idx,unsigned short val);
extern void          OUTPORT32(unsigned idx,unsigned val);
#define OUTPORT(idx,val) OUTPORT32(idx,val)

extern void *  map_phys_mem(unsigned long base, unsigned long size);
extern void    unmap_phys_mem(void *ptr, unsigned long size);

/*  These are the region types  */
#define MTRR_TYPE_UNCACHABLE 0
#define MTRR_TYPE_WRCOMB     1
#define MTRR_TYPE_WRTHROUGH  4
#define MTRR_TYPE_WRPROT     5
#define MTRR_TYPE_WRBACK     6
extern int	mtrr_set_type(unsigned base,unsigned size,int type);

#ifdef __cplusplus
}
#endif

#endif