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Annotation of Gnu-Mach/i386/i386at/blitvar.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  * 
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  * 
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  * 
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  * 
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  * 
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /* **********************************************************************
        !            27:  File:         blitvar.h
        !            28:  Description:  Definitions used by Blit driver other than h/w definition.
        !            29: 
        !            30:  $ Header: $
        !            31: 
        !            32:  Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989.
        !            33:  All rights reserved.
        !            34: ********************************************************************** */
        !            35: /*
        !            36:   Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
        !            37: Cupertino, California.
        !            38: 
        !            39:                All Rights Reserved
        !            40: 
        !            41:   Permission to use, copy, modify, and distribute this software and
        !            42: its documentation for any purpose and without fee is hereby
        !            43: granted, provided that the above copyright notice appears in all
        !            44: copies and that both the copyright notice and this permission notice
        !            45: appear in supporting documentation, and that the name of Olivetti
        !            46: not be used in advertising or publicity pertaining to distribution
        !            47: of the software without specific, written prior permission.
        !            48: 
        !            49:   OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
        !            50: INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
        !            51: IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
        !            52: CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
        !            53: LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
        !            54: NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
        !            55: WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            56: */
        !            57: 
        !            58: #include <i386at/blitreg.h>
        !            59: #include <sys/types.h>
        !            60: #include <mach/boolean.h>
        !            61: 
        !            62: 
        !            63: /* 
        !            64:  * This is how we use the Blit's graphics memory.  The frame buffer 
        !            65:  * goes at the front, and the rest is used for miscellaneous 
        !            66:  * allocations.  Users can use the "spare" memory, but they should do 
        !            67:  * an ioctl to find out which part of the memory is really free.
        !            68:  */
        !            69: 
        !            70: struct blitmem {
        !            71:        union blitfb {
        !            72:                u_char mono_fb[BLIT_MONOFBSIZE];
        !            73:                u_char color_fb[1];     /* place-holder */
        !            74:        } fb;
        !            75:        u_char spare[BLIT_MEMSIZE - sizeof(union blitfb)];
        !            76: };
        !            77: 
        !            78: 
        !            79: /*
        !            80:  * Macro to get from blitdev pointer to monochrome framebuffer.
        !            81:  */
        !            82: #define       BLIT_MONOFB(blt, fbptr) \
        !            83:        { struct blitmem *mymem = (struct blitmem *)((blt)->graphmem); \
        !            84:        fbptr = mymem->fb.mono_fb; \
        !            85:        }
        !            86: 
        !            87: 
        !            88: /* 
        !            89:  * Single-tile description that can be used to describe the entire 
        !            90:  * screen. 
        !            91:  */
        !            92: 
        !            93: struct screen_descrip {
        !            94:        STRIPHEADER strip;
        !            95:        TILEDESC tile;
        !            96: };
        !            97: 
        !            98: 
        !            99: /* 
        !           100:  * Number of microseconds we're willing to wait for display processor 
        !           101:  * to load its command block.
        !           102:  */
        !           103: 
        !           104: #define DP_RDYTIMEOUT                  1000000
        !           105: 
        !           106: 
        !           107: /* 
        !           108:  * Conversion macros.
        !           109:  */
        !           110: 
        !           111: #define VM_TO_ADDR786(vmaddr, blit_base) \
        !           112:        ((int)(vmaddr) - (int)(blit_base))
        !           113: 
        !           114: 
        !           115: extern boolean_t blit_present();
        !           116: extern void blit_init();

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