Initial source

1 files changed, 201 insertions, 0 deletions

diff --git a/chips/pm_hdw.c b/chips/pm_hdw.c
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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