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Annotation of Gnu-Mach/chips/pm_hdw.c, 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: pm_hdw.c
        !            28:  *     Author: Alessandro Forin, Carnegie Mellon University
        !            29:  *     Date:   9/90
        !            30:  *
        !            31:  *     Driver for the VFB01/02 Mono/Color framebuffer (pmax)
        !            32:  *     Hardware-level operations.
        !            33:  */
        !            34: 
        !            35: #include <bm.h>
        !            36: #if    NBM>0
        !            37: #include <platforms.h>
        !            38: 
        !            39: #include <machine/machspl.h>           /* spl definitions */
        !            40: #include <chips/screen_defs.h>
        !            41: #include <chips/pm_defs.h>
        !            42: #include <chips/busses.h>
        !            43: #include <machine/machspl.h>
        !            44: 
        !            45: #ifdef DECSTATION
        !            46: #include <mips/mips_cpu.h>
        !            47: #include <mips/PMAX/kn01.h>
        !            48: 
        !            49: #define        KN01_CSR_ADDR           PHYS_TO_K1SEG(KN01_SYS_CSR)
        !            50: #define        KN01_FBUF_ADDR          PHYS_TO_K1SEG(KN01_PHYS_FBUF_START)
        !            51: #define        KN01_PLM_ADDR           PHYS_TO_K1SEG(KN01_PHYS_COLMASK_START)
        !            52: #define        KN01_BT478_ADDR         PHYS_TO_K1SEG(KN01_SYS_VDAC)
        !            53: #define        KN01_DC503_ADDR         PHYS_TO_K1SEG(KN01_SYS_PCC)
        !            54: 
        !            55: #define VRETRACE               dc503_vretrace
        !            56: #define        MONO_FRAME_WIDTH        2048
        !            57: #define ISA_MONO               ((*(volatile short*)KN01_CSR_ADDR)&KN01_CSR_MONO)
        !            58: 
        !            59: #endif /*DECSTATION*/
        !            60: 
        !            61: #ifdef VAXSTATION
        !            62: #include <vax/ka3100.h>
        !            63: #define VRETRACE               ka42_vretrace
        !            64: #define ISA_MONO               1
        !            65: #define        MONO_FRAME_WIDTH        1024
        !            66: #endif /*VAXSTATION*/
        !            67: 
        !            68: /*
        !            69:  * Definition of the driver for the auto-configuration program.
        !            70:  */
        !            71: 
        !            72: int    pm_probe(), pm_intr();
        !            73: static void pm_attach();
        !            74: 
        !            75: vm_offset_t    pm_std[] = { 0 };
        !            76: struct bus_device *pm_info[1];
        !            77: struct bus_driver pm_driver = 
        !            78:         { pm_probe, 0, pm_attach, 0, pm_std, "pm", pm_info, };
        !            79: 
        !            80: /*
        !            81:  * Probe/Attach functions
        !            82:  */
        !            83: 
        !            84: pm_probe( /* reg, ui */)
        !            85: {
        !            86:        static probed_once = 0;
        !            87: #ifdef DECSTATION
        !            88:        if (!isa_pmax())
        !            89:                return 0;
        !            90:        if (check_memory(KN01_FBUF_ADDR, 0))
        !            91:                return 0;
        !            92: #endif /*DECSTATION*/
        !            93:        if (probed_once++ > 1)
        !            94:                printf("[mappable] ");
        !            95:        return 1;
        !            96: }
        !            97: 
        !            98: static void
        !            99: pm_attach(ui)
        !           100:        struct bus_device *ui;
        !           101: {
        !           102:        int isa_mono = ISA_MONO;
        !           103: 
        !           104:        printf(": %s%s",
        !           105:                isa_mono ? "monochrome" : "color",
        !           106:                " display");
        !           107: }
        !           108: 
        !           109: 
        !           110: /*
        !           111:  * Interrupt routine
        !           112:  */
        !           113: #ifdef DECSTATION
        !           114: pm_intr(unit,spllevel)
        !           115:        spl_t   spllevel;
        !           116: {
        !           117:        /* this is the vertical retrace one */
        !           118:        splx(spllevel);
        !           119:        lk201_led(unit);
        !           120: }
        !           121: #endif /*DECSTATION*/
        !           122: 
        !           123: #ifdef VAXSTATION
        !           124: pm_intr(unit)
        !           125: {
        !           126:        lk201_led(unit);
        !           127: }
        !           128: #endif /*VAXSTATION*/
        !           129: 
        !           130: /*
        !           131:  * Boot time initialization: must make device
        !           132:  * usable as console asap.
        !           133:  */
        !           134: extern int
        !           135:        pm_cons_init(), pm_soft_reset(),
        !           136:        dc503_video_on(), dc503_video_off(),
        !           137:        pm_char_paint(), dc503_pos_cursor(),
        !           138:        pm_insert_line(), pm_remove_line(), pm_clear_bitmap(),
        !           139:        pm_set_status(), pm_get_status(), 
        !           140:        VRETRACE(), pm_map_page();
        !           141: 
        !           142: static struct screen_switch pm_sw = {
        !           143:        screen_noop,            /* graphic_open */
        !           144:        pm_soft_reset,          /* graphic_close */
        !           145:        pm_set_status,          /* set_status */
        !           146:        pm_get_status,          /* set_status */
        !           147:        pm_char_paint,          /* char_paint */
        !           148:        dc503_pos_cursor,       /* pos_cursor */
        !           149:        pm_insert_line,         /* insert_line */
        !           150:        pm_remove_line,         /* remove_line */
        !           151:        pm_clear_bitmap,        /* clear_bitmap */
        !           152:        dc503_video_on,         /* video_on */
        !           153:        dc503_video_off,        /* video_off */
        !           154:        VRETRACE,               /* enable vert retrace intr */
        !           155:        pm_map_page             /* map_page */
        !           156: };
        !           157: 
        !           158: pm_cold_init(unit, up)
        !           159:        user_info_t     *up;
        !           160: {
        !           161:        pm_softc_t      *pm;
        !           162:        screen_softc_t  sc = screen(unit);
        !           163:        int             isa_mono = ISA_MONO;
        !           164: 
        !           165:        bcopy(&pm_sw, &sc->sw, sizeof(sc->sw));
        !           166:        if (isa_mono) {
        !           167:                sc->flags |= MONO_SCREEN;
        !           168:                sc->frame_scanline_width = MONO_FRAME_WIDTH;
        !           169:        } else {
        !           170:                sc->flags |= COLOR_SCREEN;
        !           171:                sc->frame_scanline_width = 1024;
        !           172:        }
        !           173:        sc->frame_height = 864;
        !           174:        sc->frame_visible_width = 1024;
        !           175:        sc->frame_visible_height = 864;
        !           176: 
        !           177:        pm_init_screen_params(sc, up);
        !           178:        (void) screen_up(unit, up);
        !           179: 
        !           180: #ifdef DECSTATION
        !           181:        pm = pm_alloc(unit, KN01_DC503_ADDR, KN01_FBUF_ADDR, KN01_PLM_ADDR);
        !           182:        pm->vdac_registers = (char*)KN01_BT478_ADDR;
        !           183: #endif /*DECSTATION*/
        !           184: #ifdef VAXSTATION
        !           185:        pm = pm_alloc(unit, cur_xxx, bm_mem, 0);
        !           186: #endif /*VAXSTATION*/
        !           187: 
        !           188:        screen_default_colors(up);
        !           189: 
        !           190:        dc503_init(pm);
        !           191: 
        !           192:        pm_soft_reset(sc);
        !           193: 
        !           194:        /*
        !           195:         * Clearing the screen at boot saves from scrolling
        !           196:         * much, and speeds up booting quite a bit.
        !           197:         */
        !           198:        screen_blitc( unit, 'C'-'@');/* clear screen */
        !           199: }
        !           200: 
        !           201: #endif NBM>0

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