dev_fb.h

龙芯２e的模拟器源代码

#ifndef	TESTMACHINE_FB_H
#define	TESTMACHINE_FB_H

/*
 *  Definitions used by the framebuffer device in GXemul.
 *
 *  $Id: dev_fb.h,v 1.6 2006/07/16 08:11:43 debug Exp $
 *  This file is in the public domain.
 */


/*  Physical base address for linear framebuffer memory:  */
#define	DEV_FB_ADDRESS			0x12000000

/*  Physical base address for the framebuffer controller:  */
#define	DEV_FBCTRL_ADDRESS		0x12f00000
#define	DEV_FBCTRL_LENGTH		      0x20


/*
 *  First choose the port by writing the port index to DEV_FBCTRL_PORT,
 *  then read or write DEV_FBCTRL_DATA.
 */

#define	DEV_FBCTRL_PORT			      0x00
#define	DEV_FBCTRL_DATA			      0x10

#define	DEV_FBCTRL_PORT_COMMAND			0
#define	DEV_FBCTRL_PORT_X1			1
#define	DEV_FBCTRL_PORT_Y1			2
#define	DEV_FBCTRL_PORT_X2			3
#define	DEV_FBCTRL_PORT_Y2			4
#define	DEV_FBCTRL_PORT_COLOR_R			5
#define	DEV_FBCTRL_PORT_COLOR_G			6
#define	DEV_FBCTRL_PORT_COLOR_B			7
#define	DEV_FBCTRL_NPORTS		8


/*
 *  Controller commands:
 */

/*  Do nothing.  */
#define	DEV_FBCTRL_COMMAND_NOP				0

/*  Set resolution to X1 x Y1.  */
#define	DEV_FBCTRL_COMMAND_SET_RESOLUTION		1

/*  Get current resolution into X1, Y1.  */
#define	DEV_FBCTRL_COMMAND_GET_RESOLUTION		2

/*  TODO:  */
#define	DEV_FBCTRL_COMMAND_FILL				3
#define	DEV_FBCTRL_COMMAND_COPY				4


#define	DEV_FBCTRL_MAXY(x)	(((DEV_FBCTRL_ADDRESS-DEV_FB_ADDRESS) / 3) / x)

#endif	/*  TESTMACHINE_FB_H  */