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/*
* 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: pm_hdw.c
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 9/90
*
* Driver for the VFB01/02 Mono/Color framebuffer (pmax)
* Hardware-level operations.
*/
#include <bm.h>
#if NBM>0
#include <platforms.h>
#include <machine/machspl.h> /* spl definitions */
#include <chips/screen_defs.h>
#include <chips/pm_defs.h>
#include <chips/busses.h>
#include <machine/machspl.h>
#ifdef DECSTATION
#include <mips/mips_cpu.h>
#include <mips/PMAX/kn01.h>
#define KN01_CSR_ADDR PHYS_TO_K1SEG(KN01_SYS_CSR)
#define KN01_FBUF_ADDR PHYS_TO_K1SEG(KN01_PHYS_FBUF_START)
#define KN01_PLM_ADDR PHYS_TO_K1SEG(KN01_PHYS_COLMASK_START)
#define KN01_BT478_ADDR PHYS_TO_K1SEG(KN01_SYS_VDAC)
#define KN01_DC503_ADDR PHYS_TO_K1SEG(KN01_SYS_PCC)
#define VRETRACE dc503_vretrace
#define MONO_FRAME_WIDTH 2048
#define ISA_MONO ((*(volatile short*)KN01_CSR_ADDR)&KN01_CSR_MONO)
#endif /*DECSTATION*/
#ifdef VAXSTATION
#include <vax/ka3100.h>
#define VRETRACE ka42_vretrace
#define ISA_MONO 1
#define MONO_FRAME_WIDTH 1024
#endif /*VAXSTATION*/
/*
* Definition of the driver for the auto-configuration program.
*/
int pm_probe(), pm_intr();
static void pm_attach();
vm_offset_t pm_std[] = { 0 };
struct bus_device *pm_info[1];
struct bus_driver pm_driver =
{ pm_probe, 0, pm_attach, 0, pm_std, "pm", pm_info, };
/*
* Probe/Attach functions
*/
pm_probe( /* reg, ui */)
{
static probed_once = 0;
#ifdef DECSTATION
if (!isa_pmax())
return 0;
if (check_memory(KN01_FBUF_ADDR, 0))
return 0;
#endif /*DECSTATION*/
if (probed_once++ > 1)
printf("[mappable] ");
return 1;
}
static void
pm_attach(ui)
struct bus_device *ui;
{
int isa_mono = ISA_MONO;
printf(": %s%s",
isa_mono ? "monochrome" : "color",
" display");
}
/*
* Interrupt routine
*/
#ifdef DECSTATION
pm_intr(unit,spllevel)
spl_t spllevel;
{
/* this is the vertical retrace one */
splx(spllevel);
lk201_led(unit);
}
#endif /*DECSTATION*/
#ifdef VAXSTATION
pm_intr(unit)
{
lk201_led(unit);
}
#endif /*VAXSTATION*/
/*
* Boot time initialization: must make device
* usable as console asap.
*/
extern int
pm_cons_init(), pm_soft_reset(),
dc503_video_on(), dc503_video_off(),
pm_char_paint(), dc503_pos_cursor(),
pm_insert_line(), pm_remove_line(), pm_clear_bitmap(),
pm_set_status(), pm_get_status(),
VRETRACE(), pm_map_page();
static struct screen_switch pm_sw = {
screen_noop, /* graphic_open */
pm_soft_reset, /* graphic_close */
pm_set_status, /* set_status */
pm_get_status, /* set_status */
pm_char_paint, /* char_paint */
dc503_pos_cursor, /* pos_cursor */
pm_insert_line, /* insert_line */
pm_remove_line, /* remove_line */
pm_clear_bitmap, /* clear_bitmap */
dc503_video_on, /* video_on */
dc503_video_off, /* video_off */
VRETRACE, /* enable vert retrace intr */
pm_map_page /* map_page */
};
pm_cold_init(unit, up)
user_info_t *up;
{
pm_softc_t *pm;
screen_softc_t sc = screen(unit);
int isa_mono = ISA_MONO;
bcopy(&pm_sw, &sc->sw, sizeof(sc->sw));
if (isa_mono) {
sc->flags |= MONO_SCREEN;
sc->frame_scanline_width = MONO_FRAME_WIDTH;
} else {
sc->flags |= COLOR_SCREEN;
sc->frame_scanline_width = 1024;
}
sc->frame_height = 864;
sc->frame_visible_width = 1024;
sc->frame_visible_height = 864;
pm_init_screen_params(sc, up);
(void) screen_up(unit, up);
#ifdef DECSTATION
pm = pm_alloc(unit, KN01_DC503_ADDR, KN01_FBUF_ADDR, KN01_PLM_ADDR);
pm->vdac_registers = (char*)KN01_BT478_ADDR;
#endif /*DECSTATION*/
#ifdef VAXSTATION
pm = pm_alloc(unit, cur_xxx, bm_mem, 0);
#endif /*VAXSTATION*/
screen_default_colors(up);
dc503_init(pm);
pm_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 NBM>0
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