NetBSD/sys/arch/pmax/dev/sfb.c

338 lines
9.6 KiB
C

/* $NetBSD: sfb.c,v 1.37 2000/02/03 04:09:17 nisimura Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)sfb.c 8.1 (Berkeley) 6/10/93
*/
/*
* devGraphics.c --
*
* This file contains machine-dependent routines for the graphics device.
*
* Copyright (C) 1989 Digital Equipment Corporation.
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies.
* Digital Equipment Corporation makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* from: Header: /sprite/src/kernel/dev/ds3100.md/RCS/devGraphics.c,
* v 9.2 90/02/13 22:16:24 shirriff Exp SPRITE (DECWRL)";
*/
/*
* 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 the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/tc/tcvar.h>
#include <machine/autoconf.h>
#include <machine/fbio.h>
#include <machine/fbvar.h>
#include <machine/pmioctl.h>
#include <pmax/dev/bt459.h>
#include <pmax/dev/fbreg.h>
#include <pmax/dev/sfbvar.h> /* XXX dev/tc ? */
#include <pmax/dev/sfbreg.h>
/* turn on SFB-driver debugging */
/* #define SFBDEBUG */
/*
* These need to be mapped into user space.
*/
static struct fbuaccess sfbu;
static struct pmax_fbtty sfbfb;
static struct fbinfo *sfb_fi;
/*
* Forward references.
*/
static int sfbmatch __P((struct device *, struct cfdata *, void *));
static void sfbattach __P((struct device *, struct device *, void *));
static int sfbinit __P((struct fbinfo *, caddr_t, int, int));
static int sfb_intr __P((void *sc));
struct cfattach sfb_ca = {
sizeof(struct fbinfo), sfbmatch, sfbattach
};
struct fbdriver sfb_driver = {
bt459_video_on,
bt459_video_off,
bt459InitColorMap,
bt459GetColorMap,
bt459LoadColorMap,
bt459PosCursor,
bt459LoadCursor,
bt459CursorColor
};
int
sfb_cnattach(addr)
paddr_t addr;
{
struct fbinfo *fi;
caddr_t base;
base = (caddr_t)MIPS_PHYS_TO_KSEG1(addr);
fbcnalloc(&fi);
if (sfbinit(fi, base, 0, 1) < 0)
return (0);
sfb_fi = fi;
return (1);
}
/* match and attach routines cut-and-pasted from cfb */
static int
sfbmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct tc_attach_args *ta = aux;
/* make sure that we're looking for this type of device. */
if (!TC_BUS_MATCHNAME(ta, "PMAGB-BA"))
return (0);
return (1);
}
/*
* Attach a device. Hand off all the work to sfbinit(),
* so console-config code can attach sfbs early in boot.
*/
static void
sfbattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct tc_attach_args *ta = aux;
caddr_t sfbaddr = (caddr_t)ta->ta_addr;
int unit = self->dv_unit;
struct fbinfo *fi;
if (sfb_fi)
fi = sfb_fi;
else {
if (fballoc(&fi) < 0 || sfbinit(fi, sfbaddr, unit, 0) < 0)
return; /* failed */
}
((struct fbsoftc *)self)->sc_fi = fi;
printf(": %dx%dx%d%s",
fi->fi_type.fb_width,
fi->fi_type.fb_height,
fi->fi_type.fb_depth,
(sfb_fi) ? " console" : "");
#if 0 /*XXX*/
/*
* Sean Davidson (davidson@sean.zk3.dec.com) reports this
* isn't sufficient on a 3MIN, Use an interrupt handler instead.
*/
*(sfbaddr + SFB_INTERRUPT_ENABLE) = 0;
#endif
/*
* 3MIN does not mask un-established TC option interrupts,
* so establish a handler.
* XXX Should store cmap updates in softc and apply in the
* interrupt handler, which interrupts during vertical-retrace.
*/
tc_intr_establish(parent, ta->ta_cookie, TC_IPL_NONE, sfb_intr, fi);
printf("\n");
}
/*
* Initialization
*/
static int
sfbinit(fi, base, unit, silent)
struct fbinfo *fi;
char *base;
int unit;
int silent;
{
int h_setup, v_setup;
int x_pixels, y_pixels; /* visible pixel dimensions */
/* check for no frame buffer */
if (badaddr(base + SFB_OFFSET_VRAM, 4))
return (0);
/* fetch sfb h_setup and v_setup for pixel dimensions */
h_setup = * (u_int32_t*) ( ((caddr_t)base) + SFB_VHORIZONTAL);
v_setup = * (u_int32_t*) ( ((caddr_t)base) + SFB_VVERTICAL);
x_pixels = (h_setup & 0x01ff) << 2;
y_pixels = (v_setup & 0x07ff);
#if defined(DEBUG) || defined(SFBDEBUG)
printf(" (%d x %d pixels) ", x_pixels, y_pixels);
#endif
/* Fill in main frame buffer info struct. */
fi->fi_unit = unit;
fi->fi_pixels = (caddr_t)(base + SFB_OFFSET_VRAM);
fi->fi_pixelsize = x_pixels * y_pixels;
fi->fi_base = (caddr_t)(base + SFB_ASIC_OFFSET);
fi->fi_vdac = (caddr_t)(base + SFB_OFFSET_BT459);
fi->fi_size = (fi->fi_pixels + SFB_FB_SIZE) - fi->fi_base;
fi->fi_linebytes = x_pixels;
fi->fi_driver = &sfb_driver;
fi->fi_blanked = 0;
/* Fill in Frame Buffer Type struct. */
fi->fi_type.fb_boardtype = PMAX_FBTYPE_SFB;
fi->fi_type.fb_width = x_pixels;
fi->fi_type.fb_height = y_pixels;
fi->fi_type.fb_depth = 8;
fi->fi_type.fb_cmsize = 256;
fi->fi_type.fb_size = SFB_FB_SIZE;
/* Initialize the RAMDAC. */
bt459init (fi);
/* Initialize the SFB ASIC... */
*((int *)(base + SFB_MODE)) = 0;
*((int *)(base + SFB_PLANEMASK)) = 0xFFFFFFFF;
/* XXX below, up to fbconnect(), cut-and-pasted from cfb */
/*
* qvss/pm-style mmap()ed event queue compatibility glue
*/
/*
* Must be in Uncached space since the fbuaccess structure is
* mapped into the user's address space uncached.
*/
fi->fi_fbu = (struct fbuaccess *)
MIPS_PHYS_TO_KSEG1(MIPS_KSEG0_TO_PHYS(&sfbu));
/* This is glass-tty state but it's in the shared structure. Ick. */
fi->fi_fbu->scrInfo.max_row = fi->fi_type.fb_height / 15 - 1;
fi->fi_fbu->scrInfo.max_col = 80;
#if defined(DEBUG) || defined(SFBDEBUG)
printf(" (tty %d rows by %d cols) ",
fi->fi_fbu->scrInfo.max_row, fi->fi_fbu->scrInfo.max_col);
#endif
init_pmaxfbu(fi);
/*
* Initialize old-style pmax glass-tty screen info.
*/
fi->fi_glasstty = &sfbfb;
/*
* Initialize the color map, the screen, and the mouse.
*/
if (tb_kbdmouseconfig(fi)) {
return (-1);
}
fbconnect(fi);
return (0);
}
/*
* The TURBOChannel sfb interrupts by default on every vertical retrace,
* and we don't know to disable those interrupt requests.
* The 4.4BSD/pmax kernel never enabled delivery of those interrupts
* from the TC bus, but there's a kernel design bug on the 3MIN, where
* disabling (or enabling) TC option interrupts has no effect; each slot
* interrupt is mapped directly to a separate R3000 interrupt and they
* always seem to be taken.
*
* This function simply dismisses SFB interrupts, or the interrupt
* request from the card will still be active.
*/
static int
sfb_intr(sc)
void *sc;
{
struct fbinfo *fi;
char *slot_addr;
fi = (struct fbinfo *)sc;
slot_addr = (((char *)fi->fi_base) - SFB_ASIC_OFFSET);
/* reset vertical-retrace interrupt by writing a dont-care */
*(int*) (slot_addr + SFB_CLEAR) = 0;
return (0);
}
/* old bt459 code used to be here */