4.3BSD-Reno/src/sys/hpdev/grf.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 is only permitted until one year after the first shipment
* of 4.4BSD by the Regents. Otherwise, redistribution and use in source and
* binary forms are permitted provided that: (1) source distributions retain
* this entire copyright notice and comment, and (2) distributions including
* binaries display the following acknowledgement: This product includes
* software developed by the University of California, Berkeley and its
* contributors'' in the documentation or other materials provided with the
* distribution and in all advertising materials mentioning features or use
* of this software. 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 AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* from: Utah $Hdr: grf.c 1.28 89/08/14$
*
* @(#)grf.c 7.4 (Berkeley) 6/22/90
*/
/*
* Graphics display driver for the HP300.
* This is the hardware-independent portion of the driver.
* Hardware access is through the grfdev routines below.
*/
#include "grf.h"
#if NGRF > 0
#include "param.h"
#include "user.h"
#include "proc.h"
#include "ioctl.h"
#include "file.h"
#include "mapmem.h"
#include "malloc.h"
#include "device.h"
#include "grfioctl.h"
#include "grfvar.h"
#include "machine/cpu.h"
#ifdef HPUXCOMPAT
#include "../hpux/hpux.h"
#endif
#include "ite.h"
#if NITE == 0
#define iteon(u,f)
#define iteoff(u,f)
#endif
int grfprobe();
int tc_init(), tc_mode();
int gb_init(), gb_mode();
int rb_init(), rb_mode();
int dv_init(), dv_mode();
struct grfdev grfdev[] = {
GID_TOPCAT, GRFBOBCAT, tc_init, tc_mode,
"topcat",
GID_GATORBOX, GRFGATOR, gb_init, gb_mode,
"gatorbox",
GID_RENAISSANCE,GRFRBOX, rb_init, rb_mode,
"renaissance",
GID_LRCATSEYE, GRFCATSEYE, tc_init, tc_mode,
"lo-res catseye",
GID_HRCCATSEYE, GRFCATSEYE, tc_init, tc_mode,
"hi-res catseye",
GID_HRMCATSEYE, GRFCATSEYE, tc_init, tc_mode,
"hi-res catseye",
GID_DAVINCI, GRFDAVINCI, dv_init, dv_mode,
"davinci",
};
int ngrfdev = sizeof(grfdev) / sizeof(grfdev[0]);
struct driver grfdriver = { grfprobe, "grf" };
struct grf_softc grf_softc[NGRF];
#ifdef MAPMEM
int grfexit();
struct mapmemops grfops = { (int (*)())0, (int (*)())0, grfexit, grfexit };
#ifdef HPUXCOMPAT
struct mapmemops grflckops = { (int (*)())0, (int (*)())0, grfexit, grfexit };
struct mapmemops grfiomops = { (int (*)())0, (int (*)())0, grfexit, grfexit };
#endif
#endif
#ifdef DEBUG
int grfdebug = 0;
#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.
*/
grfconfig()
{
register caddr_t addr;
register struct hp_hw *hw;
register struct hp_device *hd, *nhd;
for (hw = sc_table; hw->hw_type; hw++) {
if (hw->hw_type != BITMAP)
continue;
/*
* Found one, now match up with a logical unit number
*/
nhd = NULL;
addr = hw->hw_addr;
for (hd = hp_dinit; hd->hp_driver; hd++) {
if (hd->hp_driver != &grfdriver || hd->hp_alive)
continue;
/*
* Wildcarded. If first, remember as possible match.
*/
if (hd->hp_addr == NULL) {
if (nhd == NULL)
nhd = hd;
continue;
}
/*
* Not wildcarded.
* If exact match done searching, else keep looking.
*/
if ((caddr_t)sctoaddr(hd->hp_addr) == addr) {
nhd = hd;
break;
}
}
/*
* Found a match, initialize
*/
if (nhd && grfinit(addr, nhd->hp_unit)) {
nhd->hp_addr = addr;
}
}
}
/*
* Normal init routine called by configure() code
*/
grfprobe(hd)
struct hp_device *hd;
{
struct grf_softc *gp = &grf_softc[hd->hp_unit];
if ((gp->g_flags & GF_ALIVE) == 0 &&
!grfinit(hd->hp_addr, hd->hp_unit))
return(0);
printf("grf%d: %d x %d ", hd->hp_unit,
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 display\n", grfdev[gp->g_type].gd_desc);
return(1);
}
grfinit(addr, unit)
caddr_t addr;
{
struct grf_softc *gp = &grf_softc[unit];
struct grfreg *gr;
register struct grfdev *gd;
gr = (struct grfreg *) addr;
if (gr->gr_id != GRFHWID)
return(0);
for (gd = grfdev; gd < &grfdev[ngrfdev]; gd++)
if (gd->gd_hardid == gr->gr_id2)
break;
if (gd < &grfdev[ngrfdev] && (*gd->gd_init)(gp, addr)) {
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);
#ifdef HPUXCOMPAT
/*
* XXX: cannot handle both HPUX and BSD processes at the same time
*/
if (u.u_procp->p_flag & SHPUX)
if (gp->g_flags & GF_BSDOPEN)
return(EBUSY);
else
gp->g_flags |= GF_HPUXOPEN;
else
if (gp->g_flags & GF_HPUXOPEN)
return(EBUSY);
else
gp->g_flags |= GF_BSDOPEN;
#endif
/*
* 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)
dev_t dev;
caddr_t data;
{
register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
int error;
#ifdef HPUXCOMPAT
if (u.u_procp->p_flag & SHPUX)
return(hpuxgrfioctl(dev, cmd, data, flag));
#endif
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;
#ifdef MAPMEM
case GRFIOCMAP:
error = grfmmap(dev, (caddr_t *)data);
break;
case GRFIOCUNMAP:
error = grfunmmap(dev, *(caddr_t *)data);
break;
#endif
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 = u.u_procp; /* 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
#ifdef HPUXCOMPAT
if (gp->g_pid) {
#ifdef DEBUG
if (grfdebug & GDB_LOCK)
printf(" lock[0] %d lockslot %d lock[lockslot] %d\n",
gp->g_locks[0], gp->g_lockpslot,
gp->g_locks[gp->g_lockpslot]);
#endif
gp->g_locks[0] = 0;
if (gp->g_locks[gp->g_lockpslot] == 0) {
gp->g_lockp = NULL;
gp->g_lockpslot = 0;
}
}
#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;
#ifdef HPUXCOMPAT
if (gp->g_pid) {
int slot = grffindpid(gp);
#ifdef DEBUG
if (grfdebug & GDB_LOCK)
printf(" slot %d\n", slot);
#endif
gp->g_lockpslot = gp->g_locks[0] = slot;
gp->g_locks[slot] = 1;
}
#endif
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",
u.u_procp->p_pid, gp-grf_softc, gp->g_flags,
gp->g_lockp ? gp->g_lockp->p_pid : -1);
#endif
if (gp->g_lockp != u.u_procp)
return(EBUSY);
#ifdef HPUXCOMPAT
if (gp->g_pid) {
#ifdef DEBUG
if (grfdebug & GDB_LOCK)
printf(" lock[0] %d lockslot %d lock[lockslot] %d\n",
gp->g_locks[0], gp->g_lockpslot,
gp->g_locks[gp->g_lockpslot]);
#endif
gp->g_locks[gp->g_lockpslot] = gp->g_locks[0] = 0;
gp->g_lockpslot = 0;
}
#endif
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));
}
#ifdef HPUXCOMPAT
/*ARGSUSED*/
hpuxgrfioctl(dev, cmd, data, flag)
dev_t dev;
caddr_t data;
{
register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
int error;
error = 0;
switch (cmd) {
case GCID:
*(int *)data = gp->g_display.gd_id;
break;
case GCON:
error = grfon(dev);
break;
case GCOFF:
error = grfoff(dev);
break;
case GCLOCK:
error = grflock(gp, 1);
break;
case GCUNLOCK:
error = grfunlock(gp);
break;
case GCAON:
case GCAOFF:
break;
/* GCSTATIC is implied by our implementation */
case GCSTATIC_CMAP:
case GCVARIABLE_CMAP:
break;
#ifdef MAPMEM
/* map in control regs and frame buffer */
case GCMAP:
error = grfmmap(dev, (caddr_t *)data);
break;
case GCUNMAP:
error = grfunmmap(dev, *(caddr_t *)data);
/* XXX: HP-UX uses GCUNMAP to get rid of GCSLOT memory */
if (error)
error = grflckunmmap(dev, *(caddr_t *)data);
break;
case GCSLOT:
{
struct grf_slot *sp = (struct grf_slot *)data;
sp->slot = grffindpid(gp);
if (sp->slot)
error = grflckmmap(dev, (caddr_t *)&sp->addr);
else
error = EINVAL; /* XXX */
break;
}
/*
* XXX: only used right now to map in rbox control registers
* Will be replaced in the future with a real IOMAP interface.
*/
case IOMAPMAP:
error = iommap(dev, (caddr_t *)data);
#if 0
/*
* It may not be worth kludging this (using p_devtmp) to
* make this work. It was an undocumented side-effect
* in HP-UX that the mapped address was the return value
* of the ioctl. The only thing I remember that counted
* on this behavior was the rbox X10 server.
*/
if (!error)
u.u_r.r_val1 = *(int *)data; /* XXX: this sux */
#endif
break;
case IOMAPUNMAP:
error = iounmmap(dev, *(caddr_t *)data);
break;
#endif
default:
error = EINVAL;
break;
}
return(error);
}
#endif
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;
#ifdef MAPMEM
(void) grfunmmap(dev, (caddr_t)0);
#endif
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;
{
#ifdef MAPMEM
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);
}
#endif
/* bogus */
return(-1);
}
#ifdef HPUXCOMPAT
/*
* Convert a BSD style minor devno to HPUX style.
* We cannot just create HPUX style nodes as they require 24 bits
* of minor device number and we only have 8.
* XXX: This may give the wrong result for remote stats of other
* machines where device 10 exists.
*/
grfdevno(dev)
dev_t dev;
{
int unit = GRFUNIT(dev);
struct grf_softc *gp = &grf_softc[unit];
int newdev;
if (unit >= NGRF || (gp->g_flags&GF_ALIVE) == 0)
return(bsdtohpuxdev(dev));
/* magic major number */
newdev = 12 << 24;
/* now construct minor number */
#if defined(HP360) || defined(HP370)
if (gp->g_display.gd_regaddr == (caddr_t)DIOIIBASE)
newdev |= 0x840200;
else
#endif
if (gp->g_display.gd_regaddr != (caddr_t)GRFIADDR)
newdev |= ((u_int)gp->g_display.gd_regaddr-EXTIOBASE) | 0x200;
if (dev & GRFIMDEV)
newdev |= 0x02;
else if (dev & GRFOVDEV)
newdev |= 0x01;
#ifdef DEBUG
if (grfdebug & GDB_DEVNO)
printf("grfdevno: dev %x newdev %x\n", dev, newdev);
#endif
return(newdev);
}
#endif
#ifdef MAPMEM
grfmapin(mp, off)
struct mapmem *mp;
{
return(grfaddr(&grf_softc[GRFUNIT(mp->mm_id)], off));
}
grfmmap(dev, addrp)
dev_t dev;
caddr_t *addrp;
{
struct proc *p = u.u_procp; /* XXX */
struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
struct mapmem *mp;
int len, error, grfmapin();
#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;
error = mmalloc(p, minor(dev), addrp, len, MM_RW|MM_CI|MM_NOCORE,
&grfops, &mp);
if (error == 0)
if (error = mmmapin(p, mp, grfmapin))
(void) mmfree(p, mp);
return(error);
}
grfunmmap(dev, addr)
dev_t dev;
caddr_t addr;
{
register struct mapmem *mp, **mpp;
int found, unit = minor(dev);
#ifdef DEBUG
if (grfdebug & GDB_MMAP)
printf("grfunmmap(%d): id %d addr %x\n",
u.u_procp->p_pid, unit, addr);
#endif
found = 0;
mpp = &u.u_mmap;
for (mp = *mpp; mp; mp = *mpp) {
if (mp->mm_ops != &grfops || mp->mm_id != unit) {
mpp = &mp->mm_next;
continue;
}
if (addr &&
(addr < mp->mm_uva || addr >= mp->mm_uva+mp->mm_size)) {
mpp = &mp->mm_next;
continue;
}
(void) grfexit(mp);
found++;
}
return(found ? 0 : EINVAL);
}
grfexit(mp)
struct mapmem *mp;
{
struct proc *p = u.u_procp; /* XXX */
struct grf_softc *gp = &grf_softc[GRFUNIT(mp->mm_id)];
#ifdef DEBUG
if (grfdebug & GDB_MMAP)
printf("grfexit(%d): id %d %x@%x\n",
p->p_pid, mp->mm_id, mp->mm_size, mp->mm_uva);
#endif
(void) grfunlock(gp);
#ifdef HPUXCOMPAT
grfrmpid(gp);
#endif
mmmapout(p, mp);
return(mmfree(p, mp));
}
#ifdef HPUXCOMPAT
iommap(dev, addrp)
dev_t dev;
caddr_t *addrp;
{
struct proc *p = u.u_procp; /* XXX */
struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
struct mapmem *mp;
int len, error, grfmapin();
#ifdef DEBUG
if (grfdebug & (GDB_MMAP|GDB_IOMAP))
printf("iommap(%d): addr %x\n", p->p_pid, *addrp);
#endif
len = gp->g_display.gd_regsize;
error = mmalloc(p, minor(dev), addrp, len, MM_RW|MM_CI|MM_NOCORE,
&grfiomops, &mp);
if (error == 0)
if (error = mmmapin(p, mp, grfmapin))
(void) mmfree(p, mp);
return(error);
}
iounmmap(dev, addr)
dev_t dev;
caddr_t addr;
{
struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
register struct mapmem *mp, **mpp;
int found, len, unit = minor(dev);
#ifdef DEBUG
if (grfdebug & (GDB_MMAP|GDB_IOMAP))
printf("iounmmap(%d): id %d addr %x\n",
u.u_procp->p_pid, unit, addr);
#endif
found = 0;
len = gp->g_display.gd_regsize;
mpp = &u.u_mmap;
for (mp = *mpp; mp; mp = *mpp) {
if (mp->mm_ops != &grfiomops || mp->mm_id != unit) {
mpp = &mp->mm_next;
continue;
}
if (addr &&
(addr < mp->mm_uva || addr >= mp->mm_uva+mp->mm_size ||
len != mp->mm_size)) {
mpp = &mp->mm_next;
continue;
}
(void) grfexit(mp);
found++;
}
return(found ? 0 : EINVAL);
}
/*
* Processes involved in framebuffer mapping via GCSLOT are recorded in
* an array of pids. The first element is used to record the last slot used
* (for faster lookups). The remaining elements record up to GRFMAXLCK-1
* process ids. Returns a slot number between 1 and GRFMAXLCK or 0 if no
* slot is available.
*/
grffindpid(gp)
struct grf_softc *gp;
{
register short pid, *sp;
register int i, limit;
int ni;
if (gp->g_pid == NULL) {
gp->g_pid = (short *)
malloc(GRFMAXLCK * sizeof(short), M_DEVBUF, M_WAITOK);
bzero((caddr_t)gp->g_pid, GRFMAXLCK * sizeof(short));
}
pid = u.u_procp->p_pid;
ni = limit = gp->g_pid[0];
for (i = 1, sp = &gp->g_pid[1]; i <= limit; i++, sp++) {
if (*sp == pid)
goto done;
if (*sp == 0)
ni = i;
}
i = ni;
if (i < limit) {
gp->g_pid[i] = pid;
goto done;
}
if (++i == GRFMAXLCK)
return(0);
gp->g_pid[0] = i;
gp->g_pid[i] = pid;
done:
#ifdef DEBUG
if (grfdebug & GDB_LOCK)
printf("grffindpid(%d): slot %d of %d\n",
pid, i, gp->g_pid[0]);
#endif
return(i);
}
grfrmpid(gp)
struct grf_softc *gp;
{
register short pid, *sp;
register int limit, i;
int mi;
if (gp->g_pid == NULL || (limit = gp->g_pid[0]) == 0)
return;
pid = u.u_procp->p_pid;
limit = gp->g_pid[0];
mi = 0;
for (i = 1, sp = &gp->g_pid[1]; i <= limit; i++, sp++) {
if (*sp == pid)
*sp = 0;
else if (*sp)
mi = i;
}
i = mi;
if (i < limit)
gp->g_pid[0] = i;
#ifdef DEBUG
if (grfdebug & GDB_LOCK)
printf("grfrmpid(%d): slot %d of %d\n",
pid, sp-gp->g_pid, gp->g_pid[0]);
#endif
}
/*ARGSUSED*/
grflckmapin(mp, off)
struct mapmem *mp;
{
u_int pa = kvtop((u_int)grf_softc[GRFUNIT(mp->mm_id)].g_locks);
#ifdef DEBUG
if (grfdebug & GDB_LOCK)
printf("grflckmapin(%d): va %x pa %x\n", u.u_procp->p_pid,
grf_softc[GRFUNIT(mp->mm_id)].g_locks, pa);
#endif
return(pa >> PGSHIFT);
}
grflckmmap(dev, addrp)
dev_t dev;
caddr_t *addrp;
{
struct proc *p = u.u_procp; /* XXX */
struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
struct mapmem *mp;
int error, grflckmapin();
#ifdef DEBUG
if (grfdebug & (GDB_MMAP|GDB_LOCK))
printf("grflckmmap(%d): addr %x\n",
p->p_pid, *addrp);
#endif
if (gp->g_locks == NULL) {
gp->g_locks = (u_char *) cialloc(NBPG);
if (gp->g_locks == NULL)
return(ENOMEM);
}
error = mmalloc(p, minor(dev), addrp, NBPG, MM_RW|MM_CI,
&grflckops, &mp);
if (error == 0)
if (error = mmmapin(p, mp, grflckmapin))
(void) mmfree(p, mp);
return(error);
}
grflckunmmap(dev, addr)
dev_t dev;
caddr_t addr;
{
register struct mapmem *mp;
int unit = minor(dev);
#ifdef DEBUG
if (grfdebug & (GDB_MMAP|GDB_LOCK))
printf("grflckunmmap(%d): id %d addr %x\n",
u.u_procp->p_pid, unit, addr);
#endif
for (mp = u.u_mmap; mp; mp = mp->mm_next)
if (mp->mm_ops == &grflckops && mp->mm_id == unit &&
mp->mm_uva == addr) {
(void) grfexit(mp);
return(0);
}
return(EINVAL);
}
#endif /* HPUXCOMPAT */
#endif /* MAPMEM */
#endif /* NGRF > 0 */