diff options
Diffstat (limited to 'chips/fb_hdw.c')
| -rw-r--r-- | chips/fb_hdw.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/chips/fb_hdw.c b/chips/fb_hdw.c deleted file mode 100644 index 7139a86..0000000 --- a/chips/fb_hdw.c +++ /dev/null @@ -1,219 +0,0 @@ -/* - * 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: fb_hdw.c - * Author: Alessandro Forin, Carnegie Mellon University - * Date: 7/91 - * - * Driver for the 3max Monochrome Frame Buffer Display, - * hardware-level operations. - */ - -#include <mfb.h> -#if (NMFB > 0) -#include <platforms.h> - -#include <machine/machspl.h> -#include <mach/std_types.h> -#include <chips/busses.h> - -#include <chips/screen_defs.h> - -#include <chips/pm_defs.h> -typedef pm_softc_t fb_softc_t; - - -#ifdef DECSTATION -#include <mips/PMAX/pmag_aa.h> -#include <mips/PMAX/tc.h> -#endif - -#ifdef FLAMINGO -#include <mips/PMAX/pmag_aa.h> /* XXX fixme */ -#include <alpha/DEC/tc.h> -#endif - -/* - * Definition of the driver for the auto-configuration program. - */ - -int fb_probe(), fb_intr(); -static void fb_attach(); - -vm_offset_t fb_std[NMFB] = { 0 }; -struct bus_device *fb_info[NMFB]; -struct bus_driver fb_driver = - { fb_probe, 0, fb_attach, 0, fb_std, "fb", fb_info, - 0, 0, BUS_INTR_DISABLED}; - -/* - * Probe/Attach functions - */ - -fb_probe( /* reg, ui */) -{ - static probed_once = 0; - - /* - * Probing was really done sweeping the TC long ago - */ - if (tc_probe("fb") == 0) - return 0; - if (probed_once++ > 1) - printf("[mappable] "); - return 1; -} - -static void -fb_attach(ui) - struct bus_device *ui; -{ - /* ... */ - printf(": monochrome display"); -} - - -/* - * Interrupt routine - */ - -fb_intr(unit,spllevel) - spl_t spllevel; -{ - register volatile char *ack; - - /* acknowledge interrupt */ - ack = (volatile char *) fb_info[unit]->address + FB_OFFSET_IREQ; - *ack = 0; - -#if mips - splx(spllevel); -#endif - lk201_led(unit); -} - -fb_vretrace(fb, on) - fb_softc_t *fb; -{ - int i; - - for (i = 0; i < NMFB; i++) - if (fb_info[i]->address == (vm_offset_t)fb->framebuffer) - break; - if (i == NMFB) return; - - (*tc_enable_interrupt)(fb_info[i]->adaptor, on, 0); -} - -/* - * Video on/off - */ -fb_video_on(fb, up) - fb_softc_t *fb; - user_info_t *up; -{ - if (!fb->cursor_state) /* video is "on" at boot */ - return; - bt455_video_on(fb->vdac_registers, up); - bt431_cursor_on(fb->cursor_registers); - fb->cursor_state = 0; -} - -fb_video_off(fb, up) - fb_softc_t *fb; - user_info_t *up; -{ - if (fb->cursor_state) - return; - bt455_video_off(fb->vdac_registers, up); - bt431_cursor_off(fb->cursor_registers); - fb->cursor_state = 1; -} - -/* - * Boot time initialization: must make device - * usable as console asap. - */ -extern int - fb_soft_reset(), fb_set_status(), - bt431_pos_cursor(), fb_video_on(), - fb_video_off(), fb_vretrace(), - pm_get_status(), pm_char_paint(), - pm_insert_line(), pm_remove_line(), - pm_clear_bitmap(), pm_map_page(); - -static struct screen_switch fb_sw = { - screen_noop, /* graphic_open */ - fb_soft_reset, /* graphic_close */ - fb_set_status, /* set_status */ - pm_get_status, /* get_status */ - pm_char_paint, /* char_paint */ - bt431_pos_cursor, /* pos_cursor */ - pm_insert_line, /* insert_line */ - pm_remove_line, /* remove_line */ - pm_clear_bitmap, /* clear_bitmap */ - fb_video_on, /* video_on */ - fb_video_off, /* video_off */ - fb_vretrace, /* intr_enable */ - pm_map_page /* map_page */ -}; - -fb_cold_init(unit, up) - user_info_t *up; -{ - fb_softc_t *fb; - screen_softc_t sc = screen(unit); - vm_offset_t base = tc_probe("fb"); - - bcopy(&fb_sw, &sc->sw, sizeof(sc->sw)); -#if 0 - sc->flags |= MONO_SCREEN; -#else - sc->flags |= COLOR_SCREEN; -#endif - sc->frame_scanline_width = 2048; - sc->frame_height = 1024; - sc->frame_visible_width = 1280; - sc->frame_visible_height = 1024; - - pm_init_screen_params(sc, up); - (void) screen_up(unit, up); - - fb = pm_alloc(unit, base+FB_OFFSET_BT431, base+FB_OFFSET_VRAM, -1); - fb->vdac_registers = (char*) base + FB_OFFSET_BT455; - - screen_default_colors(up); - - fb_soft_reset(sc); - - /* - * Clearing the screen at boot saves from scrolling - * much, and speeds up booting quite a bit. - */ - screen_blitc( unit, 'C'-'@');/* clear screen */ -} - -#endif (NMFB > 0) |