NetBSD/sys/arch/mac68k/dev/grf.c

509 lines
11 KiB
C

/*
* 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 $Hdr: grf.c 1.31 91/01/21$
*
* from: from: from: from: @(#)grf.c 7.8 (Berkeley) 5/7/91
* $Id: grf.c,v 1.7 1994/06/26 13:02:41 briggs Exp $
*/
/*
* Graphics display driver for the HP300.
* This is the hardware-independent portion of the driver.
* Hardware access is through the grfdev routines below.
*/
#define DEBUG 1
#include "grf.h"
#if NGRF > 0
#include <sys/types.h>
#include "param.h"
#include "proc.h"
#include "ioctl.h"
#include "file.h"
#include "malloc.h"
#include <sys/device.h>
#include "nubus.h"
#include "grfioctl.h"
#include "grfvar.h"
#include <machine/cpu.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>
#include <vnode.h>
#include <miscfs/specfs/specdev.h>
#include <mman.h>
#include "ite.h"
#if NITE == 0
#define iteon(u,f)
#define iteoff(u,f)
#endif
int grfprobe();
int macvideo_init(), macvideo_mode();
struct grfdev grfdev[] = {
GID_MAC, GRFMAC, macvideo_init, macvideo_mode,
"MacVideo",
};
int ngrfdev = sizeof(grfdev) / sizeof(grfdev[0]);
/* struct driver grfdriver = { grfprobe, "grf" }; */
struct grf_softc grf_softc[NGRF];
int gNumGrfDev=0;
#ifdef DEBUG
int grfdebug = 0xff;
#define GDB_DEVNO 0x01
#define GDB_MMAP 0x02
#define GDB_IOMAP 0x04
#define GDB_LOCK 0x08
#endif
/*
* XXX: called from ite console init routine.
* Does just what configure will do later but without printing anything.
MF maybe i'll call this from larrys console stuff
*/
grfconfig()
{
#if 0
register caddr_t addr;
register struct nubus_hw *hw;
register struct mac_device *hd, *nhd;
int i;
for (i=0,hw = nubus_table;i<NUBUS_MAXSLOTS; hw++,i++) {
if (hw->Slot.type!=NUBUS_VIDEO)
continue;
/*
* Found one, now match up with a logical unit number
*/
nhd = NULL;
addr = hw->addr;
for (hd = mac_dinit; hd->mac_driver; hd++) {
if ((hd->mac_driver != &grfdriver) || hd->mac_alive)
continue;
nhd = hd;
nhd->mac_addr = addr;
nhd->mac_unit = gNumGrfDev++;
break;
/*
* Not wildcarded.
* If exact match done searching, else keep looking.
*/
/* if (sctova(hd->mac_addr) == addr) { */
/* nhd = hd; */
/* break; */
/* } */
}
/*
* Found a match, initialize
*/
if (nhd && grfprobe(nhd))
{
nhd->mac_alive=1;
hw->claimed = 1;
}
}
#endif
}
/*
* Normal init routine called by configure() code
*/
grfprobe(nu, unit)
struct nubus_hw *nu;
int unit;
{
struct grf_softc *gp = &grf_softc[unit];
if ((gp->g_flags & GF_ALIVE) == 0 &&
!grfinit(nu, unit)) {
printf("\n");
return(0);
}
printf(": %d x %d ",
gp->g_display.gd_dwidth, gp->g_display.gd_dheight);
if (gp->g_display.gd_colors == 2)
printf("monochrome");
else
printf("%d color", gp->g_display.gd_colors);
printf(" %s (%s) display\n", grfdev[gp->g_type].gd_desc, nu->Slot.name);
return(1);
}
static int
matchvideocard(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct nubus_hw *nu = (struct nubus_hw *) aux;
return (nu->Slot.type == NUBUS_VIDEO);
}
static void
grf_attach(parent, dev, aux)
struct device *parent, *dev;
void *aux;
{
struct nubus_hw *nu = (struct nubus_hw *) aux;
grfprobe(nu, dev->dv_unit);
}
struct cfdriver grfcd =
{ NULL, "grf", matchvideocard, grf_attach,
DV_DULL, sizeof(struct device), NULL, 0 };
grfinit(nu, unit)
struct nubus_hw *nu;
{
struct grf_softc *gp = &grf_softc[unit];
struct grfreg *gr;
register struct grfdev *gd;
for (gd = grfdev; gd < &grfdev[ngrfdev]; gd++)
/* if (gd->gd_hardid == gr->gr_id2) */
break;
if (gd < &grfdev[ngrfdev] && (*gd->gd_init)(gp, nu)) {
gp->g_display.gd_id = gd->gd_softid;
gp->g_type = gd - grfdev;
gp->g_flags = GF_ALIVE;
return(1);
}
return(0);
}
/*ARGSUSED*/
grfopen(dev, flags)
dev_t dev;
{
int unit = GRFUNIT(dev);
register struct grf_softc *gp = &grf_softc[unit];
int error = 0;
if (unit >= NGRF || (gp->g_flags & GF_ALIVE) == 0)
return(ENXIO);
if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
return(EBUSY);
/*
* First open.
* XXX: always put in graphics mode.
*/
error = 0;
if ((gp->g_flags & GF_OPEN) == 0) {
gp->g_flags |= GF_OPEN;
error = grfon(dev);
}
return(error);
}
/*ARGSUSED*/
grfclose(dev, flags)
dev_t dev;
{
register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
(void) grfoff(dev);
(void) grfunlock(gp);
gp->g_flags &= GF_ALIVE;
return(0);
}
/*ARGSUSED*/
grfioctl(dev, cmd, data, flag, p)
dev_t dev;
caddr_t data;
struct proc *p;
{
register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
int error;
error = 0;
switch (cmd) {
/* XXX: compatibility hack */
case OGRFIOCGINFO:
bcopy((caddr_t)&gp->g_display, data, sizeof(struct ogrfinfo));
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 GRFIOCMAP:
error = grfmmap(dev, (caddr_t *)data, p);
break;
case GRFIOCUNMAP:
error = grfunmmap(dev, *(caddr_t *)data, p);
break;
default:
error = EINVAL;
break;
}
return(error);
}
/*ARGSUSED*/
grfselect(dev, rw)
dev_t dev;
{
if (rw == FREAD)
return(0);
return(1);
}
grflock(gp, block)
register struct grf_softc *gp;
int block;
{
struct proc *p = curproc; /* XXX */
int error;
extern char devioc[];
#ifdef DEBUG
if (grfdebug & GDB_LOCK)
printf("grflock(%d): dev %x flags %x lockpid %x\n",
p->p_pid, gp-grf_softc, gp->g_flags,
gp->g_lockp ? gp->g_lockp->p_pid : -1);
#endif
if (gp->g_lockp) {
if (gp->g_lockp == p)
return(EBUSY);
if (!block)
return(EAGAIN);
do {
gp->g_flags |= GF_WANTED;
if (error = tsleep((caddr_t)&gp->g_flags,
(PZERO+1) | PCATCH, devioc, 0))
return (error);
} while (gp->g_lockp);
}
gp->g_lockp = p;
return(0);
}
grfunlock(gp)
register struct grf_softc *gp;
{
#ifdef DEBUG
if (grfdebug & GDB_LOCK)
printf("grfunlock(%d): dev %x flags %x lockpid %d\n",
curproc->p_pid, gp-grf_softc, gp->g_flags,
gp->g_lockp ? gp->g_lockp->p_pid : -1);
#endif
if (gp->g_lockp != curproc)
return(EBUSY);
if (gp->g_flags & GF_WANTED) {
wakeup((caddr_t)&gp->g_flags);
gp->g_flags &= ~GF_WANTED;
}
gp->g_lockp = NULL;
return(0);
}
/*ARGSUSED*/
grfmap(dev, off, prot)
dev_t dev;
{
return(grfaddr(&grf_softc[GRFUNIT(dev)], off));
}
grfon(dev)
dev_t dev;
{
int unit = GRFUNIT(dev);
struct grf_softc *gp = &grf_softc[unit];
/*
* XXX: iteoff call relies on devices being in same order
* as ITEs and the fact that iteoff only uses the minor part
* of the dev arg.
*/
iteoff(unit, 3);
return((*grfdev[gp->g_type].gd_mode)
(gp, (dev&GRFOVDEV) ? GM_GRFOVON : GM_GRFON));
}
grfoff(dev)
dev_t dev;
{
int unit = GRFUNIT(dev);
struct grf_softc *gp = &grf_softc[unit];
int error;
(void) grfunmmap(dev, (caddr_t)0, curproc);
error = (*grfdev[gp->g_type].gd_mode)
(gp, (dev&GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF);
/* XXX: see comment for iteoff above */
iteon(unit, 2);
return(error);
}
grfaddr(gp, off)
struct grf_softc *gp;
register int off;
{
register struct grfinfo *gi = &gp->g_display;
/* control registers */
if (off >= 0 && off < gi->gd_regsize)
return(((u_int)gi->gd_regaddr + off) >> PGSHIFT);
/* frame buffer */
if (off >= gi->gd_regsize && off < gi->gd_regsize+gi->gd_fbsize) {
off -= gi->gd_regsize;
return(((u_int)gi->gd_fbaddr + off) >> PGSHIFT);
}
/* bogus */
return(-1);
}
grfmmap(dev, addrp, p)
dev_t dev;
caddr_t *addrp;
struct proc *p;
{
struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
int len, error;
struct vnode vn;
struct specinfo si;
int flags;
#ifdef DEBUG
if (grfdebug & GDB_MMAP)
printf("grfmmap(%d): addr %x\n", p->p_pid, *addrp);
#endif
len = gp->g_display.gd_regsize + gp->g_display.gd_fbsize;
flags = MAP_SHARED;
if (*addrp)
flags |= MAP_FIXED;
else
{
return 12;
*addrp = (caddr_t)0x1000000; /* XXX */
}
vn.v_type = VCHR; /* XXX */
vn.v_specinfo = &si; /* XXX */
vn.v_rdev = dev; /* XXX */
error = vm_mmap(&p->p_vmspace->vm_map, (vm_offset_t *)addrp,
(vm_size_t)len, VM_PROT_ALL, VM_PROT_ALL, flags, (caddr_t)&vn, 0);
return(error);
}
grfunmmap(dev, addr, p)
dev_t dev;
caddr_t addr;
struct proc *p;
{
struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
vm_size_t size;
int rv;
#ifdef DEBUG
if (grfdebug & GDB_MMAP)
printf("grfunmmap(%d): dev %x addr %x\n", p->p_pid, dev, addr);
#endif
if (addr == 0)
return(EINVAL); /* XXX: how do we deal with this? */
size = round_page(gp->g_display.gd_regsize + gp->g_display.gd_fbsize);
rv = vm_deallocate(&(p->p_vmspace->vm_map), (vm_offset_t)addr, size);
return(rv == KERN_SUCCESS ? 0 : EINVAL);
}
#endif /* NGRF > 0 */
int macvideo_init(struct grf_softc *gp,struct nubus_hw *nu)
{
int i=0;
struct grfinfo *gi;
struct imagedata *image;
struct imagedata imageSpace;
/* find out which nubus slot this guy is in, then get the video
params
*/
image=(struct imagedata *)NUBUS_GetImageData(&(nu->Slot),&imageSpace );
gi = &(gp->g_display);
gi->gd_regsize=0;
gi->gd_colors=1;
gi->gd_planes=1;
gi->gd_dwidth=gi->gd_fbwidth=image->right;
gi->gd_dheight=gi->gd_fbheight=image->bottom;
gi->gd_fbsize=image->right*image->bottom;
gi->gd_fbrowbytes=image->rowbytes;
gi->gd_fbaddr=(caddr_t) ((u_long)image->offset+(u_long)nu->addr);
gp->g_fbkva=gi->gd_fbaddr;
gNumGrfDev++;
return 1;
}
int macvideo_mode(struct grf_softc *gp,int cmd, void *arg)
{
return 0;
}