/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * 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: screen_switch.h * Author: Alessandro Forin, Carnegie Mellon University * Date: 10/90 * * Definitions of things that must be tailored to * specific hardware boards for the Generic Screen Driver. */ #ifndef SCREEN_SWITCH_H #define SCREEN_SWITCH_H 1 #include <mach/boolean.h> /* * List of probe routines, scanned at cold-boot time * to see which, if any, graphic display is available. * This is done before autoconf, so that printing on * the console works early on. The alloc routine is * called only on the first device that answers. * Ditto for the setup routine, called later on. */ struct screen_probe_vector { int (*probe)(void); unsigned int (*alloc)(void); int (*setup)(int, user_info_t); }; /* * Low-level operations on the graphic device, used * by the otherwise device-independent interface code */ /* Forward declaration of screen_softc_t */ typedef struct screen_softc *screen_softc_t; struct screen_switch { int (*graphic_open)(void); /* when X11 opens */ int (*graphic_close)(screen_softc_t); /* .. or closes */ int (*set_status)(screen_softc_t, dev_flavor_t, dev_status_t, natural_t); /* dev-specific ops */ int (*get_status)(screen_softc_t, dev_flavor_t, dev_status_t, natural_t*); /* dev-specific ops */ int (*char_paint)(screen_softc_t, int, int, int); /* blitc */ int (*pos_cursor)(void*, int, int); /* cursor positioning*/ int (*insert_line)(screen_softc_t, short); /* ..and scroll down */ int (*remove_line)(screen_softc_t, short); /* ..and scroll up */ int (*clear_bitmap)(screen_softc_t); /* blank screen */ int (*video_on)(void*, user_info_t*); /* screen saver */ int (*video_off)(void*, user_info_t*); int (*intr_enable)(void*, boolean_t); int (*map_page)(screen_softc_t, vm_offset_t, int); /* user-space mapping*/ }; /* * Each graphic device needs page-aligned memory * to be mapped in user space later (for events * and such). Size and content of this memory * is unfortunately device-dependent, even if * it did not need to (puns). */ extern char *screen_data; extern struct screen_probe_vector screen_probe_vector[]; extern int screen_noop(void), screen_find(void); #endif /* SCREEN_SWITCH_H */