NetBSD/sys/arch/atari/dev/grf.c

568 lines
12 KiB
C

/* $NetBSD: grf.c,v 1.6 1995/06/26 19:55:45 leo Exp $ */
/*
* Copyright (c) 1995 Leo Weppelman
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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: Utah $Hdr: grf.c 1.31 91/01/21$
*
* @(#)grf.c 7.8 (Berkeley) 5/7/91
*/
/*
* Graphics display driver for the Atari
* This is the hardware-independent portion of the driver.
* Hardware access is through the grf_softc->g_mode routine.
*/
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/ioctl.h>
#include <sys/device.h>
#include <sys/file.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <sys/mman.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>
#include <machine/cpu.h>
#include <atari/atari/device.h>
#include <atari/dev/grfioctl.h>
#include <atari/dev/grfabs_reg.h>
#include <atari/dev/grfvar.h>
#include <atari/dev/itevar.h>
#include <atari/dev/viewioctl.h>
#include <atari/dev/viewvar.h>
#include "grf.h"
#if NGRF > 0
#include "ite.h"
#if NITE == 0
#define ite_on(u,f)
#define ite_off(u,f)
#define ite_reinit(d)
#endif
int grfopen __P((dev_t, int, int, struct proc *));
int grfclose __P((dev_t, int));
int grfioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
int grfselect __P((dev_t, int));
int grfmmap __P((dev_t, int, int));
int grfon __P((dev_t));
int grfoff __P((dev_t));
int grfsinfo __P((dev_t, struct grfdyninfo *));
#ifdef BANKEDDEVPAGER
int grfbanked_get __P((dev_t, off_t, int));
int grfbanked_cur __P((dev_t));
int grfbanked_set __P((dev_t, int));
#endif
static void grf_viewsync __P((struct grf_softc *));
static int grf_mode __P((struct grf_softc *, int, void *, int, int));
int grfbusprint __P((void *auxp, char *));
int grfbusmatch __P((struct device *, struct cfdata *, void *));
void grfbusattach __P((struct device *, struct device *, void *));
void grfattach __P((struct device *, struct device *, void *));
int grfmatch __P((struct device *, struct cfdata *, void *));
int grfprint __P((void *, char *));
/*
* pointers to grf drivers device structs
*/
struct grf_softc *grfsp[NGRF];
struct cfdriver grfbuscd = {
NULL, "grfbus", (cfmatch_t)grfbusmatch, grfbusattach, DV_DULL,
sizeof(struct device)
};
struct cfdriver grfcd = {
NULL, "grf", (cfmatch_t)grfmatch, grfattach, DV_DULL,
sizeof(struct grf_softc), NULL, 0
};
/*
* only used in console init.
*/
static struct cfdata *cfdata_gbus = NULL;
static struct cfdata *cfdata_grf = NULL;
int
grfbusmatch(pdp, cfp, auxp)
struct device *pdp;
struct cfdata *cfp;
void *auxp;
{
if(strcmp(auxp, grfbuscd.cd_name))
return(0);
if((atari_realconfig == 0) || (cfdata_gbus == NULL)) {
/*
* Probe layers we depend on
*/
if(grfabs_probe() == 0)
return(0);
viewprobe();
if(atari_realconfig == 0) {
/*
* XXX: console init opens view 0
*/
if(viewopen(0, 0))
return(0);
cfdata_gbus = cfp;
}
}
return(1); /* Always there */
}
void
grfbusattach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
static int did_cons = 0;
int i;
if(dp == NULL) { /* Console init */
did_cons = 1;
i = 0;
atari_config_found(cfdata_gbus, NULL, (void*)&i, grfbusprint);
}
else {
printf("\n");
for(i = 0; i < NGRF; i++) {
/*
* Skip opening view[0] when we this is the console.
*/
if(!did_cons || (i > 0))
if(viewopen(i, 0))
break;
config_found(dp, (void*)&i, grfbusprint);
}
}
}
int
grfbusprint(auxp, name)
void *auxp;
char *name;
{
if(name == NULL)
return(UNCONF);
return(QUIET);
}
int
grfmatch(pdp, cfp, auxp)
struct device *pdp;
struct cfdata *cfp;
void *auxp;
{
int unit = *(int*)auxp;
/*
* Match only on unit indicated by grfbus attach.
*/
if(cfp->cf_unit != unit)
return(0);
cfdata_grf = cfp;
return(1);
}
/*
* attach: initialize the grf-structure and try to attach an ite to us.
* note : dp is NULL during early console init.
*/
void
grfattach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
static struct grf_softc congrf;
struct grf_softc *gp;
int maj;
/*
* find our major device number
*/
for(maj = 0; maj < nchrdev; maj++)
if (cdevsw[maj].d_open == grfopen)
break;
/*
* Handle exeption case: early console init
*/
if(dp == NULL) {
congrf.g_unit = 0;
congrf.g_grfdev = makedev(maj, 0);
congrf.g_flags = GF_ALIVE;
congrf.g_mode = grf_mode;
congrf.g_conpri = grfcc_cnprobe();
congrf.g_viewdev = congrf.g_unit;
grfcc_iteinit(&congrf);
grf_viewsync(&congrf);
/* Attach console ite */
atari_config_found(cfdata_grf, NULL, &congrf, grfprint);
return;
}
gp = (struct grf_softc *)dp;
gp->g_unit = gp->g_device.dv_unit;
grfsp[gp->g_unit] = gp;
if((cfdata_grf != NULL) && (gp->g_unit == 0)) {
/*
* We inited earlier just copy the info, take care
* not to copy the device struct though.
*/
bcopy(&congrf.g_display, &gp->g_display,
(char *)&gp[1] - (char *)&gp->g_display);
}
else {
gp->g_grfdev = makedev(maj, gp->g_unit);
gp->g_flags = GF_ALIVE;
gp->g_mode = grf_mode;
gp->g_conpri = 0;
gp->g_viewdev = gp->g_unit;
grfcc_iteinit(gp);
grf_viewsync(gp);
}
printf(": width %d height %d", gp->g_display.gd_dwidth,
gp->g_display.gd_dheight);
if(gp->g_display.gd_colors == 2)
printf(" monochrome\n");
else printf(" colors %d\n", gp->g_display.gd_colors);
/*
* try and attach an ite
*/
config_found(dp, gp, grfprint);
}
int
grfprint(auxp, pnp)
void *auxp;
char *pnp;
{
if(pnp)
printf("ite at %s", pnp);
return(UNCONF);
}
/*ARGSUSED*/
int
grfopen(dev, flags, devtype, p)
dev_t dev;
int flags, devtype;
struct proc *p;
{
struct grf_softc *gp;
if (GRFUNIT(dev) >= NGRF)
return(ENXIO);
gp = grfsp[GRFUNIT(dev)];
if ((gp->g_flags & GF_ALIVE) == 0)
return(ENXIO);
if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
return(EBUSY);
grf_viewsync(gp);
return(0);
}
/*ARGSUSED*/
int
grfclose(dev, flags)
dev_t dev;
int flags;
{
struct grf_softc *gp;
gp = grfsp[GRFUNIT(dev)];
(void)grfoff(dev);
gp->g_flags &= GF_ALIVE;
return(0);
}
/*ARGSUSED*/
int
grfioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
int flag;
caddr_t data;
struct proc *p;
{
struct grf_softc *gp;
int error;
gp = grfsp[GRFUNIT(dev)];
error = 0;
switch (cmd) {
case OGRFIOCGINFO:
/* argl.. no bank-member.. */
bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
break;
case GRFIOCGINFO:
bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
break;
case GRFIOCON:
error = grfon(dev);
break;
case GRFIOCOFF:
error = grfoff(dev);
break;
case GRFIOCSINFO:
error = grfsinfo(dev, (struct grfdyninfo *) data);
break;
case GRFGETVMODE:
return(gp->g_mode(gp, GM_GRFGETVMODE, data));
case GRFSETVMODE:
error = gp->g_mode(gp, GM_GRFSETVMODE, data);
if (error == 0 && gp->g_itedev)
ite_reinit(gp->g_itedev);
break;
case GRFGETNUMVM:
return(gp->g_mode(gp, GM_GRFGETNUMVM, data));
/*
* these are all hardware dependant, and have to be resolved
* in the respective driver.
*/
case GRFIOCPUTCMAP:
case GRFIOCGETCMAP:
case GRFIOCSSPRITEPOS:
case GRFIOCGSPRITEPOS:
case GRFIOCSSPRITEINF:
case GRFIOCGSPRITEINF:
case GRFIOCGSPRITEMAX:
default:
/*
* check to see whether it's a command recognized by the
* view code.
*/
return(viewioctl(gp->g_viewdev, cmd, data, flag, p));
error = EINVAL;
break;
}
return(error);
}
/*ARGSUSED*/
int
grfselect(dev, rw)
dev_t dev;
int rw;
{
if (rw == FREAD)
return(0);
return(1);
}
/*
* map the contents of a graphics display card into process'
* memory space.
*/
int
grfmmap(dev, off, prot)
dev_t dev;
int off, prot;
{
struct grf_softc *gp;
struct grfinfo *gi;
gp = grfsp[GRFUNIT(dev)];
gi = &gp->g_display;
/*
* frame buffer
*/
if ((off >= 0) && (off < gi->gd_fbsize))
return (((u_int)gi->gd_fbaddr + off) >> PGSHIFT);
return(-1);
}
int
grfon(dev)
dev_t dev;
{
struct grf_softc *gp;
gp = grfsp[GRFUNIT(dev)];
if (gp->g_flags & GF_GRFON)
return(0);
gp->g_flags |= GF_GRFON;
if (gp->g_itedev != NODEV)
ite_off(gp->g_itedev, 3);
return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON));
}
int
grfoff(dev)
dev_t dev;
{
struct grf_softc *gp;
int error;
gp = grfsp[GRFUNIT(dev)];
if ((gp->g_flags & GF_GRFON) == 0)
return(0);
gp->g_flags &= ~GF_GRFON;
error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF);
/*
* Closely tied together no X's
*/
if (gp->g_itedev != NODEV)
ite_on(gp->g_itedev, 2);
return(error);
}
int
grfsinfo(dev, dyninfo)
dev_t dev;
struct grfdyninfo *dyninfo;
{
struct grf_softc *gp;
int error;
gp = grfsp[GRFUNIT(dev)];
error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo);
/*
* Closely tied together no X's
*/
if (gp->g_itedev != NODEV)
ite_reinit(gp->g_itedev);
return(error);
}
/*
* Get the grf-info in sync with underlying view.
*/
static void
grf_viewsync(gp)
struct grf_softc *gp;
{
struct view_size vs;
bmap_t bm;
struct grfinfo *gi;
gi = &gp->g_display;
viewioctl(gp->g_viewdev, VIOCGBMAP, &bm, 0, -1);
gp->g_data = (caddr_t) 0xDeadBeaf; /* not particularly clean.. */
gi->gd_fbaddr = bm.hw_address;
gi->gd_fbsize = bm.depth*bm.bytes_per_row*bm.rows;
if(viewioctl(gp->g_viewdev, VIOCGSIZE, &vs, 0, -1)) {
/*
* fill in some default values...
* XXX: Should _never_ happen
*/
vs.width = 640;
vs.height = 400;
vs.depth = 1;
}
gi->gd_colors = 1 << vs.depth;
gi->gd_planes = vs.depth;
gi->gd_fbwidth = vs.width;
gi->gd_fbheight = vs.height;
gi->gd_dyn.gdi_fbx = 0;
gi->gd_dyn.gdi_fby = 0;
gi->gd_dyn.gdi_dwidth = vs.width;
gi->gd_dyn.gdi_dheight = vs.height;
gi->gd_dyn.gdi_dx = 0;
gi->gd_dyn.gdi_dy = 0;
}
/*
* Change the mode of the display.
* Right now all we can do is grfon/grfoff.
* Return a UNIX error number or 0 for success.
*/
/*ARGSUSED*/
static int
grf_mode(gp, cmd, arg, a2, a3)
struct grf_softc *gp;
int cmd, a2, a3;
void *arg;
{
switch (cmd) {
case GM_GRFON:
/*
* Get in sync with view, ite might have changed it.
*/
grf_viewsync(gp);
viewioctl(gp->g_viewdev, VIOCDISPLAY, NULL, 0, -1);
return(0);
case GM_GRFOFF:
viewioctl(gp->g_viewdev, VIOCREMOVE, NULL, 0, -1);
return(0);
case GM_GRFCONFIG:
default:
break;
}
return(EINVAL);
}
#endif /* NGRF > 0 */