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Diffstat (limited to 'chips/pm_defs.h')
| -rw-r--r-- | chips/pm_defs.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/chips/pm_defs.h b/chips/pm_defs.h new file mode 100644 index 0000000..623f65e --- /dev/null +++ b/chips/pm_defs.h @@ -0,0 +1,57 @@ +/* + * 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)) |