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Annotation of Gnu-Mach/chips/sfb_misc.c, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1992 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: sfb_misc.c
        !            28:  *     Author: Alessandro Forin, Carnegie Mellon University
        !            29:  *     Date: 11/92
        !            30:  *
        !            31:  *     Driver for the PMAGB-BA smart color framebuffer
        !            32:  *
        !            33:  */
        !            34: 
        !            35: #include <sfb.h>
        !            36: #if    (NSFB > 0)
        !            37: #include <platforms.h>
        !            38: 
        !            39: /*
        !            40:  * NOTE: This driver relies heavily on the pm one, as well as the cfb.
        !            41:  */
        !            42: 
        !            43: #include <device/device_types.h>
        !            44: #include <chips/screen_defs.h>
        !            45: #include <chips/pm_defs.h>
        !            46: typedef pm_softc_t     sfb_softc_t;
        !            47: 
        !            48: #include <chips/bt459.h>
        !            49: #define        bt459           cursor_registers
        !            50: 
        !            51: #ifdef DECSTATION
        !            52: #include <mips/PMAX/pmagb_ba.h>
        !            53: #endif
        !            54: 
        !            55: #ifdef FLAMINGO
        !            56: #include <mips/PMAX/pmagb_ba.h>                /* XXXX */
        !            57: #endif
        !            58: 
        !            59: /*
        !            60:  * Initialize color map, for kernel use
        !            61:  */
        !            62: #define        sfb_init_colormap               cfb_init_colormap
        !            63: 
        !            64: /*
        !            65:  * Position cursor
        !            66:  */
        !            67: sfb_pos_cursor(
        !            68:        bt459_regmap_t  *regs,
        !            69:        int             x,
        !            70:        int             y)
        !            71: {
        !            72:        bt459_pos_cursor( regs, x + 368 - 219, y + 37 - 34);
        !            73: }
        !            74: 
        !            75: /*
        !            76:  * Large viz small cursor
        !            77:  */
        !            78: #define        sfb_small_cursor_to_large       cfb_small_cursor_to_large
        !            79: 
        !            80: /*
        !            81:  * Device-specific set status
        !            82:  */
        !            83: #define sfb_set_status                 cfb_set_status
        !            84: 
        !            85: /*
        !            86:  * Hardware initialization
        !            87:  */
        !            88: sfb_init_screen(
        !            89:        sfb_softc_t *sfb)
        !            90: {
        !            91:        bt459_init( sfb->bt459,
        !            92:                    sfb->bt459 + (SFB_OFFSET_RESET - SFB_OFFSET_BT459),
        !            93:                    4 /* 4:1 MUX */);
        !            94: }
        !            95: 
        !            96: /*
        !            97:  * Do what's needed when X exits
        !            98:  */
        !            99: sfb_soft_reset(
        !           100:        screen_softc_t  sc)
        !           101: {
        !           102:        sfb_softc_t     *sfb = (sfb_softc_t*) sc->hw_state;
        !           103:        user_info_t     *up =  sc->up;
        !           104:        extern cursor_sprite_t  dc503_default_cursor;
        !           105: 
        !           106:        /*
        !           107:         * Restore params in mapped structure
        !           108:         */
        !           109:        pm_init_screen_params(sc,up);
        !           110:        up->row = up->max_row - 1;
        !           111: 
        !           112:        up->dev_dep_2.pm.x26 = 2; /* you do not want to know */
        !           113:        up->dev_dep_1.pm.x18 = (short*)2;
        !           114: 
        !           115:        /*
        !           116:         * Restore RAMDAC chip to default state
        !           117:         */
        !           118:        sfb_init_screen(sfb);
        !           119: 
        !           120:        /*
        !           121:         * Load kernel's cursor sprite: just use the same pmax one
        !           122:         */
        !           123:        sfb_small_cursor_to_large(up, dc503_default_cursor);
        !           124:        bt459_cursor_sprite(sfb->bt459, up->dev_dep_2.pm.cursor_sprite);
        !           125: 
        !           126:        /*
        !           127:         * Color map and cursor color
        !           128:         */
        !           129:        sfb_init_colormap(sc);
        !           130: }
        !           131: 
        !           132: 
        !           133: #endif (NSFB > 0)

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