libfbx-drivers.h

libfxb是linux下只写操作framebuffer的一个轻量级的库。

/*
 *  libfbx-drivers.h -- Primary header file for libfbx drivers
 *  (C)opyright 2000-2001 U4X Labs
 *
 *  Written by: Paul Mundt     <[e-mail]>
 *              Mike Bourgeous <[e-mail]>
 *              Sat Sep 16 04:01:24 EDT 2000
 *
 *  $Id: libfbx-drivers.h,v 1.17 2001/03/03 01:34:43 lethal Exp $
 *
 *  	Basic layout and system for hardware specific optimizations
 *  for the libfbx system.
 *
 *  See ChangeLog for modifications, CREDITS for credits.
 *
 *  All source herein is copyright U4X Labs and its original author. 
 *  Any code modifications or additions are (C)opyright the original 
 *  author and U4X Labs respectively.
 *
 *  libfbx is free software; you can redistribute it and/or modify it 
 *  under the terms of the GNU Lesser General Public License as 
 *  published by the Free Software Foundation; either version 2.1 of 
 *  the License, or (at your option) any later version.
 *
 *  libfbx 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with libfbx; if not, write to the Free Software 
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 *  USA
 */
#ifndef __LIBFBX_DRIVERS_H
#define __LIBFBX_DRIVERS_H

#include <libfbx/libfbx.h>

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

#define BIT(x) (1UL << (x))

struct fb_surface;

typedef struct fb_module {
	char *id;			/* Framebuffer Driver ID */
	char *name;			/* Name of Module */
} fb_module;

typedef struct fb_driver_ops {
	/* blit routines */
	void (*draw_image)(struct fb_surface *src, struct fb_surface *dest, int x, int y);
	unsigned int has_draw_image : 1;

	/* line routines */
	void (*line)(__s32, __s32, __s32, __s32, __s32, __s32, __s32, struct fb_surface *);
	unsigned int has_line : 1;

	/* filled rectangle routines */
	void (*fill_rect)(__s32 x1, __s32 y1, __s32 x2, __s32 y2, __s32 r, __s32 g, __s32 b, struct fb_surface *surface);
	unsigned int has_fill_rect : 1;	

	/* console blanking routines */
	void (*blank)(int);
	unsigned int has_blank : 1;

	/* 
	 * writec routines
	 *
	 * Note: We have to call it writec() as putc() is already declared
	 * in accordance with ANSI and POSIX.1. This should never be called
	 * directly, use fb_putc() at all times.
	 */
	void (*writec)(__s32 x, __s32 y, __u32 c);
	unsigned int has_writec : 1;
} fb_driver_ops;

typedef struct fb_driver {
	void *handle;			/* for dlopen() */
	char id[32];			/* Driver ID */

	/* init/exit routines */
	int (*init)(void);
	void (*exit)(void);

	volatile __u8 *mmio_ctl;	/* MMIO Base (if applicable) */
	struct fb_driver_ops *ops;	/* Operations the driver is capable of */
} fb_driver;

/* drivers/libfbx-gen.c */
int fb_map_mmio_region();
void fb_unmap_mmio_region();

inline void fb_outb(__u32 idx, __u8 val);
inline __u8 fb_inb(__u32 idx);
inline void fb_outl(__u32 idx, __u32 val);
inline __u32 fb_inl(__u32 idx);

/* libfbx-modules.c */
int fb_load_module(char *name);
void fb_unload_module();

extern fb_module fb_modules[];

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* __LIBFBX_DRIVERS_H */