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Annotation of XNU/osfmk/ppc/screen_switch.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * @OSF_COPYRIGHT@
        !            24:  */
        !            25: /* 
        !            26:  * Mach Operating System
        !            27:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !            28:  * All Rights Reserved.
        !            29:  * 
        !            30:  * Permission to use, copy, modify and distribute this software and its
        !            31:  * documentation is hereby granted, provided that both the copyright
        !            32:  * notice and this permission notice appear in all copies of the
        !            33:  * software, derivative works or modified versions, and any portions
        !            34:  * thereof, and that both notices appear in supporting documentation.
        !            35:  * 
        !            36:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            37:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            38:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            39:  * 
        !            40:  * Carnegie Mellon requests users of this software to return to
        !            41:  * 
        !            42:  *  Software Distribution Coordinator  or  [email protected]
        !            43:  *  School of Computer Science
        !            44:  *  Carnegie Mellon University
        !            45:  *  Pittsburgh PA 15213-3890
        !            46:  * 
        !            47:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            48:  * the rights to redistribute these changes.
        !            49:  */
        !            50: /*
        !            51:  */
        !            52: /*
        !            53:  *     File: screen_switch.h
        !            54:  *     Author: Alessandro Forin, Carnegie Mellon University
        !            55:  *     Date:   10/90
        !            56:  *
        !            57:  *     Definitions of things that must be tailored to
        !            58:  *     specific hardware boards for the Generic Screen Driver.
        !            59:  */
        !            60: 
        !            61: #ifndef        SCREEN_SWITCH_H
        !            62: #define        SCREEN_SWITCH_H 1
        !            63: 
        !            64: #include <mach/boolean.h>
        !            65: 
        !            66: /*
        !            67:  *     List of probe routines, scanned at cold-boot time
        !            68:  *     to see which, if any, graphic display is available.
        !            69:  *     This is done before autoconf, so that printing on
        !            70:  *     the console works early on.  The alloc routine is
        !            71:  *     called only on the first device that answers.
        !            72:  *     Ditto for the setup routine, called later on.
        !            73:  */
        !            74: struct screen_probe_vector {
        !            75:        int             (*probe)(void);
        !            76:        unsigned int    (*alloc)(void);
        !            77:        int             (*setup)(int, user_info_t);
        !            78: };
        !            79: 
        !            80: /*
        !            81:  *     Low-level operations on the graphic device, used
        !            82:  *     by the otherwise device-independent interface code
        !            83:  */
        !            84: 
        !            85: /* Forward declaration of screen_softc_t */
        !            86: typedef struct screen_softc *screen_softc_t;
        !            87: 
        !            88: struct screen_switch {
        !            89:        int     (*graphic_open)(void);                  /* when X11 opens */
        !            90:        int     (*graphic_close)(screen_softc_t);       /* .. or closes */
        !            91:        int     (*set_status)(screen_softc_t,
        !            92:                              dev_flavor_t,
        !            93:                              dev_status_t,
        !            94:                              natural_t);               /* dev-specific ops */
        !            95:        int     (*get_status)(screen_softc_t,
        !            96:                              dev_flavor_t,
        !            97:                              dev_status_t,
        !            98:                              natural_t*);              /* dev-specific ops */
        !            99:        int     (*char_paint)(screen_softc_t,
        !           100:                              int,
        !           101:                              int,
        !           102:                              int);                     /* blitc */
        !           103:        int     (*pos_cursor)(void*,
        !           104:                              int,
        !           105:                              int);                     /* cursor positioning*/
        !           106:        int     (*insert_line)(screen_softc_t,
        !           107:                               short);                  /* ..and scroll down */
        !           108:        int     (*remove_line)(screen_softc_t,
        !           109:                               short);                  /* ..and scroll up */
        !           110:        int     (*clear_bitmap)(screen_softc_t);        /* blank screen */
        !           111:        int     (*video_on)(void*,
        !           112:                            user_info_t*);              /* screen saver */
        !           113:        int     (*video_off)(void*,
        !           114:                             user_info_t*);
        !           115:        int     (*intr_enable)(void*,
        !           116:                               boolean_t);
        !           117:        int     (*map_page)(screen_softc_t,
        !           118:                            vm_offset_t,
        !           119:                            int);                       /* user-space mapping*/
        !           120: };
        !           121: 
        !           122: /*
        !           123:  *     Each graphic device needs page-aligned memory
        !           124:  *     to be mapped in user space later (for events
        !           125:  *     and such).  Size and content of this memory
        !           126:  *     is unfortunately device-dependent, even if
        !           127:  *     it did not need to (puns).
        !           128:  */
        !           129: extern char  *screen_data;
        !           130: 
        !           131: extern struct screen_probe_vector screen_probe_vector[];
        !           132: 
        !           133: extern int screen_noop(void), screen_find(void);
        !           134: 
        !           135: #endif /* SCREEN_SWITCH_H */

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