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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* File: pm_defs.h
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 9/90
*
* Definitions specific to the "pm" simple framebuffer driver,
* exported across sub-modules. Some other framebuffer drivers
* that share code with pm use these defs also.
*/
/* Hardware state (to be held in the screen descriptor) */
typedef struct {
char *cursor_registers; /* opaque, for sharing */
unsigned short cursor_state; /* some regs are W-only */
short unused; /* padding, free */
char *vdac_registers; /* opaque, for sharing */
unsigned char *framebuffer;
unsigned char *plane_mask;
} pm_softc_t;
extern pm_softc_t *pm_alloc(/* unit, curs, framebuf, planem */);
/* user mapping sizes */
#define USER_INFO_SIZE PAGE_SIZE
#define PMASK_SIZE PAGE_SIZE
#define BITMAP_SIZE(sc) \
((sc)->frame_height * (((sc)->flags & COLOR_SCREEN) ? \
sc->frame_scanline_width : \
sc->frame_scanline_width>>3))
#define PM_SIZE(sc) (USER_INFO_SIZE+PMASK_SIZE+BITMAP_SIZE(sc))
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