[unix-history] / usr / src / sys / hp / dev / grf.c

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1990, 1993
 *	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.
 *
 * %sccs.include.redist.c%
 *
 * from: Utah $Hdr: grf.c 1.36 93/08/13$
 *
 *	@(#)grf.c	8.5 (Berkeley) %G%
 */

/*
 * Graphics display driver for HP 300/400/700/800 machines.
 * This is the hardware-independent portion of the driver.
 * Hardware access is through the machine dependent grf switch routines.
 */

#include "grf.h"
#if NGRF > 0

#include <sys/param.h>
#include <sys/proc.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/malloc.h>
#include <sys/vnode.h>
#include <sys/mman.h>

#include <hp/dev/grfioctl.h>
#include <hp/dev/grfvar.h>
#include <hp/dev/grfreg.h>

#include <machine/cpu.h>

#ifdef HPUXCOMPAT
#include <hp/hpux/hpux.h>
#endif

#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>

#include <miscfs/specfs/specdev.h>

#include <ite.h>
#if NITE == 0
#define	iteon(u,f)
#define	iteoff(u,f)
#endif

struct	grf_softc grf_softc[NGRF];

#ifdef DEBUG
int grfdebug = 0;
#define GDB_DEVNO	0x01
#define GDB_MMAP	0x02
#define GDB_IOMAP	0x04
#define GDB_LOCK	0x08
#endif

/*ARGSUSED*/
grfopen(dev, flags)
	dev_t dev;
	int flags;
{
	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 (curproc->p_md.md_flags & MDP_HPUX)
		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;
	int flags;
{
	register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];

	(void) grfoff(dev);
#ifdef HPUXCOMPAT
	(void) grfunlock(gp);
#endif
	gp->g_flags &= GF_ALIVE;
	return(0);
}

/*ARGSUSED*/
grfioctl(dev, cmd, data, flag, p)
	dev_t dev;
	u_long cmd;
	caddr_t data;
	int flag;
	struct proc *p;
{
	register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
	int error;

#ifdef HPUXCOMPAT
	if (p->p_md.md_flags & MDP_HPUX)
		return(hpuxgrfioctl(dev, cmd, data, flag, p));
#endif
	error = 0;
	switch (cmd) {

	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;
	int rw;
{
	if (rw == FREAD)
		return(0);
	return(1);
}

/*ARGSUSED*/
grfmap(dev, off, prot)
	dev_t dev;
	int off, prot;
{
	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((*gp->g_sw->gd_mode)(gp,
				    (dev&GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
				    (caddr_t)0));
}

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 = (*gp->g_sw->gd_mode)(gp,
				     (dev&GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
				     (caddr_t)0);
	/* 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);
}

/*
 * HP-UX compatibility routines
 */
#ifdef HPUXCOMPAT

/*ARGSUSED*/
hpuxgrfioctl(dev, cmd, data, flag, p)
	dev_t dev;
	u_long cmd;
	caddr_t data;
	int flag;
	struct proc *p;
{
	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;

	/* map in control regs and frame buffer */
	case GCMAP:
		error = grfmmap(dev, (caddr_t *)data, p);
		break;

	case GCUNMAP:
		error = grfunmmap(dev, *(caddr_t *)data, p);
		/* 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);
			if (error && gp->g_pid) {
				free((caddr_t)gp->g_pid, M_DEVBUF);
				gp->g_pid = NULL;
			}
		} else
			error = EINVAL;		/* XXX */
		break;
	}

	case GCDESCRIBE:
		error = (*gp->g_sw->gd_mode)(gp, GM_DESCRIBE, data);
		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;

	default:
		error = EINVAL;
		break;
	}
	return(error);
}

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_pid) {
#ifdef DEBUG
		if (grfdebug & GDB_LOCK)
			printf(" lockpslot %d lockslot %d lock[lockslot] %d\n",
			       gp->g_lock->gl_lockslot, gp->g_lockpslot,
			       gp->g_lock->gl_locks[gp->g_lockpslot]);
#endif
		gp->g_lock->gl_lockslot = 0;
		if (gp->g_lock->gl_locks[gp->g_lockpslot] == 0) {
			gp->g_lockp = NULL;
			gp->g_lockpslot = 0;
		}
	}
	if (gp->g_lockp) {
		if (gp->g_lockp == p)
			return(EBUSY);
		if (!block)
			return(OEAGAIN);
		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;
	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_lock->gl_lockslot = slot;
		gp->g_lock->gl_locks[slot] = 1;
	}
	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_pid) {
#ifdef DEBUG
		if (grfdebug & GDB_LOCK)
			printf(" lockpslot %d lockslot %d lock[lockslot] %d\n",
			       gp->g_lock->gl_lockslot, gp->g_lockpslot,
			       gp->g_lock->gl_locks[gp->g_lockpslot]);
#endif
		gp->g_lock->gl_locks[gp->g_lockpslot] = 0;
		gp->g_lockpslot = gp->g_lock->gl_lockslot = 0;
	}
	if (gp->g_flags & GF_WANTED) {
		wakeup((caddr_t)&gp->g_flags); 
		gp->g_flags &= ~GF_WANTED;
	}
	gp->g_lockp = NULL;
	return(0);
}

/*
 * 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 (gp->g_display.gd_regaddr != (caddr_t)GRFIADDR) {
		int sc = patosc(gp->g_display.gd_regaddr);
		newdev |= (sc << 16) | 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	/* HPUXCOMPAT */

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
		*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);
	if (error == 0)
		(void) (*gp->g_sw->gd_mode)(gp, GM_MAP, *addrp);
	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? */
	(void) (*gp->g_sw->gd_mode)(gp, GM_UNMAP, 0);
	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);
}

#ifdef HPUXCOMPAT
iommap(dev, addrp)
	dev_t dev;
	caddr_t *addrp;
{

#ifdef DEBUG
	if (grfdebug & (GDB_MMAP|GDB_IOMAP))
		printf("iommap(%d): addr %x\n", curproc->p_pid, *addrp);
#endif
	return(EINVAL);
}

iounmmap(dev, addr)
	dev_t dev;
	caddr_t addr;
{
	int unit = minor(dev);

#ifdef DEBUG
	if (grfdebug & (GDB_MMAP|GDB_IOMAP))
		printf("iounmmap(%d): id %d addr %x\n",
		       curproc->p_pid, unit, addr);
#endif
	return(0);
}

/*
 * 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 = curproc->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 = curproc->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
}

grflckmmap(dev, addrp)
	dev_t dev;
	caddr_t *addrp;
{
#ifdef DEBUG
	struct proc *p = curproc;		/* XXX */

	if (grfdebug & (GDB_MMAP|GDB_LOCK))
		printf("grflckmmap(%d): addr %x\n",
		       p->p_pid, *addrp);
#endif
	return(EINVAL);
}

grflckunmmap(dev, addr)
	dev_t dev;
	caddr_t addr;
{
#ifdef DEBUG
	int unit = minor(dev);

	if (grfdebug & (GDB_MMAP|GDB_LOCK))
		printf("grflckunmmap(%d): id %d addr %x\n",
		       curproc->p_pid, unit, addr);
#endif
	return(EINVAL);
}
#endif	/* HPUXCOMPAT */

#endif	/* NGRF > 0 */
Commit	Line	Data
60f56dfc KM	1	/*
60f56dfc KM	2	* Copyright (c) 1988 University of Utah.
06b4439d KB	3	* Copyright (c) 1990, 1993
06b4439d KB	4	* The Regents of the University of California. All rights reserved.
60f56dfc KM	5	*
	6	* This code is derived from software contributed to Berkeley by
	7	* the Systems Programming Group of the University of Utah Computer
	8	* Science Department.
	9	*
	10	* %sccs.include.redist.c%
	11	*
6e5e75f2	12	* from: Utah $Hdr: grf.c 1.36 93/08/13$
60f56dfc	13	*
053d16fe	14	* @(#)grf.c 8.5 (Berkeley) %G%
60f56dfc KM	15	*/
	16
	17	/*
7b7da76f	18	* Graphics display driver for HP 300/400/700/800 machines.
60f56dfc	19	* This is the hardware-independent portion of the driver.
7b7da76f	20	* Hardware access is through the machine dependent grf switch routines.
60f56dfc KM	21	*/
60f56dfc KM	22
38a01dbe	23	#include "grf.h"
60f56dfc KM	24	#if NGRF > 0
60f56dfc KM	25
bc22c9dd KM	26	#include <sys/param.h>
	27	#include <sys/proc.h>
	28	#include <sys/ioctl.h>
	29	#include <sys/file.h>
	30	#include <sys/malloc.h>
	31	#include <sys/vnode.h>
	32	#include <sys/mman.h>
60f56dfc	33
bc22c9dd KM	34	#include <hp/dev/grfioctl.h>
	35	#include <hp/dev/grfvar.h>
	36	#include <hp/dev/grfreg.h>
60f56dfc	37
bc22c9dd	38	#include <machine/cpu.h>
60f56dfc KM	39
60f56dfc KM	40	#ifdef HPUXCOMPAT
bc22c9dd	41	#include <hp/hpux/hpux.h>
60f56dfc KM	42	#endif
60f56dfc KM	43
bc22c9dd KM	44	#include <vm/vm.h>
	45	#include <vm/vm_kern.h>
	46	#include <vm/vm_page.h>
	47	#include <vm/vm_pager.h>
88f29710	48
bc22c9dd	49	#include <miscfs/specfs/specdev.h>
22d09b27	50
bc22c9dd	51	#include <ite.h>
60f56dfc KM	52	#if NITE == 0
	53	#define iteon(u,f)
	54	#define iteoff(u,f)
	55	#endif
	56
60f56dfc KM	57	struct grf_softc grf_softc[NGRF];
60f56dfc KM	58
60f56dfc KM	59	#ifdef DEBUG
	60	int grfdebug = 0;
	61	#define GDB_DEVNO 0x01
	62	#define GDB_MMAP 0x02
	63	#define GDB_IOMAP 0x04
	64	#define GDB_LOCK 0x08
	65	#endif
	66
60f56dfc KM	67	/ARGSUSED/
	68	grfopen(dev, flags)
	69	dev_t dev;
2c0f281d	70	int flags;
60f56dfc KM	71	{
	72	int unit = GRFUNIT(dev);
	73	register struct grf_softc *gp = &grf_softc[unit];
	74	int error = 0;
	75
	76	if (unit >= NGRF \|\| (gp->g_flags & GF_ALIVE) == 0)
	77	return(ENXIO);
	78	if ((gp->g_flags & (GF_OPEN\|GF_EXCLUDE)) == (GF_OPEN\|GF_EXCLUDE))
	79	return(EBUSY);
	80	#ifdef HPUXCOMPAT
	81	/*
	82	* XXX: cannot handle both HPUX and BSD processes at the same time
	83	*/
49b10dff	84	if (curproc->p_md.md_flags & MDP_HPUX)
60f56dfc KM	85	if (gp->g_flags & GF_BSDOPEN)
	86	return(EBUSY);
	87	else
	88	gp->g_flags \|= GF_HPUXOPEN;
	89	else
	90	if (gp->g_flags & GF_HPUXOPEN)
	91	return(EBUSY);
	92	else
	93	gp->g_flags \|= GF_BSDOPEN;
	94	#endif
	95	/*
	96	* First open.
	97	* XXX: always put in graphics mode.
	98	*/
	99	error = 0;
	100	if ((gp->g_flags & GF_OPEN) == 0) {
	101	gp->g_flags \|= GF_OPEN;
	102	error = grfon(dev);
	103	}
	104	return(error);
	105	}
	106
	107	/ARGSUSED/
	108	grfclose(dev, flags)
	109	dev_t dev;
2c0f281d	110	int flags;
60f56dfc KM	111	{
	112	register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
	113
	114	(void) grfoff(dev);
6e5e75f2	115	#ifdef HPUXCOMPAT
60f56dfc	116	(void) grfunlock(gp);
6e5e75f2	117	#endif
60f56dfc KM	118	gp->g_flags &= GF_ALIVE;
	119	return(0);
	120	}
	121
	122	/ARGSUSED/
88f29710	123	grfioctl(dev, cmd, data, flag, p)
60f56dfc	124	dev_t dev;
053d16fe	125	u_long cmd;
60f56dfc	126	caddr_t data;
053d16fe	127	int flag;
88f29710	128	struct proc *p;
60f56dfc KM	129	{
	130	register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
	131	int error;
	132
	133	#ifdef HPUXCOMPAT
49b10dff	134	if (p->p_md.md_flags & MDP_HPUX)
88f29710	135	return(hpuxgrfioctl(dev, cmd, data, flag, p));
60f56dfc KM	136	#endif
	137	error = 0;
	138	switch (cmd) {
	139
60f56dfc KM	140	case GRFIOCGINFO:
	141	bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
	142	break;
	143
	144	case GRFIOCON:
	145	error = grfon(dev);
	146	break;
	147
	148	case GRFIOCOFF:
	149	error = grfoff(dev);
	150	break;
	151
60f56dfc	152	case GRFIOCMAP:
88f29710	153	error = grfmmap(dev, (caddr_t *)data, p);
60f56dfc KM	154	break;
	155
	156	case GRFIOCUNMAP:
88f29710	157	error = grfunmmap(dev, (caddr_t )data, p);
60f56dfc	158	break;
60f56dfc KM	159
	160	default:
	161	error = EINVAL;
	162	break;
	163
	164	}
	165	return(error);
	166	}
	167
	168	/ARGSUSED/
	169	grfselect(dev, rw)
	170	dev_t dev;
2c0f281d	171	int rw;
60f56dfc KM	172	{
	173	if (rw == FREAD)
	174	return(0);
	175	return(1);
	176	}
	177
6e5e75f2 MH	178	/ARGSUSED/
	179	grfmap(dev, off, prot)
	180	dev_t dev;
2c0f281d	181	int off, prot;
60f56dfc	182	{
6e5e75f2	183	return(grfaddr(&grf_softc[GRFUNIT(dev)], off));
60f56dfc KM	184	}
60f56dfc KM	185
6e5e75f2 MH	186	grfon(dev)
6e5e75f2 MH	187	dev_t dev;
60f56dfc	188	{
6e5e75f2 MH	189	int unit = GRFUNIT(dev);
	190	struct grf_softc *gp = &grf_softc[unit];
	191
	192	/*
	193	* XXX: iteoff call relies on devices being in same order
	194	* as ITEs and the fact that iteoff only uses the minor part
	195	* of the dev arg.
	196	*/
	197	iteoff(unit, 3);
	198	return((*gp->g_sw->gd_mode)(gp,
	199	(dev&GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
	200	(caddr_t)0));
60f56dfc KM	201	}
60f56dfc KM	202
6e5e75f2	203	grfoff(dev)
60f56dfc KM	204	dev_t dev;
60f56dfc KM	205	{
6e5e75f2 MH	206	int unit = GRFUNIT(dev);
	207	struct grf_softc *gp = &grf_softc[unit];
	208	int error;
	209
	210	(void) grfunmmap(dev, (caddr_t)0, curproc);
	211	error = (*gp->g_sw->gd_mode)(gp,
	212	(dev&GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
	213	(caddr_t)0);
	214	/* XXX: see comment for iteoff above */
	215	iteon(unit, 2);
	216	return(error);
	217	}
	218
	219	grfaddr(gp, off)
	220	struct grf_softc *gp;
	221	register int off;
	222	{
	223	register struct grfinfo *gi = &gp->g_display;
	224
	225	/* control registers */
	226	if (off >= 0 && off < gi->gd_regsize)
	227	return(((u_int)gi->gd_regaddr + off) >> PGSHIFT);
	228
	229	/* frame buffer */
	230	if (off >= gi->gd_regsize && off < gi->gd_regsize+gi->gd_fbsize) {
	231	off -= gi->gd_regsize;
	232	return(((u_int)gi->gd_fbaddr + off) >> PGSHIFT);
	233	}
	234	/* bogus */
	235	return(-1);
60f56dfc KM	236	}
60f56dfc KM	237
6e5e75f2 MH	238	/*
	239	* HP-UX compatibility routines
	240	*/
60f56dfc KM	241	#ifdef HPUXCOMPAT
	242
	243	/ARGSUSED/
88f29710	244	hpuxgrfioctl(dev, cmd, data, flag, p)
60f56dfc	245	dev_t dev;
053d16fe	246	u_long cmd;
60f56dfc	247	caddr_t data;
053d16fe	248	int flag;
88f29710	249	struct proc *p;
60f56dfc KM	250	{
	251	register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
	252	int error;
	253
	254	error = 0;
	255	switch (cmd) {
	256
	257	case GCID:
	258	(int )data = gp->g_display.gd_id;
	259	break;
	260
	261	case GCON:
	262	error = grfon(dev);
	263	break;
	264
	265	case GCOFF:
	266	error = grfoff(dev);
	267	break;
	268
	269	case GCLOCK:
	270	error = grflock(gp, 1);
	271	break;
	272
	273	case GCUNLOCK:
	274	error = grfunlock(gp);
	275	break;
	276
	277	case GCAON:
	278	case GCAOFF:
	279	break;
	280
	281	/* GCSTATIC is implied by our implementation */
	282	case GCSTATIC_CMAP:
	283	case GCVARIABLE_CMAP:
	284	break;
	285
60f56dfc KM	286	/* map in control regs and frame buffer */
60f56dfc KM	287	case GCMAP:
88f29710	288	error = grfmmap(dev, (caddr_t *)data, p);
60f56dfc KM	289	break;
	290
	291	case GCUNMAP:
88f29710	292	error = grfunmmap(dev, (caddr_t )data, p);
60f56dfc KM	293	/* XXX: HP-UX uses GCUNMAP to get rid of GCSLOT memory */
	294	if (error)
	295	error = grflckunmmap(dev, (caddr_t )data);
	296	break;
	297
	298	case GCSLOT:
	299	{
	300	struct grf_slot sp = (struct grf_slot )data;
	301
	302	sp->slot = grffindpid(gp);
22d09b27	303	if (sp->slot) {
60f56dfc	304	error = grflckmmap(dev, (caddr_t *)&sp->addr);
22d09b27 KM	305	if (error && gp->g_pid) {
	306	free((caddr_t)gp->g_pid, M_DEVBUF);
	307	gp->g_pid = NULL;
	308	}
	309	} else
60f56dfc KM	310	error = EINVAL; /* XXX */
	311	break;
	312	}
	313
6e5e75f2 MH	314	case GCDESCRIBE:
	315	error = (*gp->g_sw->gd_mode)(gp, GM_DESCRIBE, data);
	316	break;
	317
60f56dfc KM	318	/*
	319	* XXX: only used right now to map in rbox control registers
	320	* Will be replaced in the future with a real IOMAP interface.
	321	*/
	322	case IOMAPMAP:
	323	error = iommap(dev, (caddr_t *)data);
96d5f73d MH	324	#if 0
	325	/*
	326	* It may not be worth kludging this (using p_devtmp) to
	327	* make this work. It was an undocumented side-effect
	328	* in HP-UX that the mapped address was the return value
	329	* of the ioctl. The only thing I remember that counted
	330	* on this behavior was the rbox X10 server.
	331	*/
60f56dfc KM	332	if (!error)
60f56dfc KM	333	u.u_r.r_val1 = (int )data; /* XXX: this sux */
96d5f73d	334	#endif
60f56dfc KM	335	break;
	336
	337	case IOMAPUNMAP:
	338	error = iounmmap(dev, (caddr_t )data);
	339	break;
60f56dfc KM	340
	341	default:
	342	error = EINVAL;
	343	break;
	344	}
	345	return(error);
	346	}
	347
6e5e75f2 MH	348	grflock(gp, block)
	349	register struct grf_softc *gp;
	350	int block;
60f56dfc	351	{
6e5e75f2	352	struct proc p = curproc; / XXX */
60f56dfc	353	int error;
6e5e75f2	354	extern char devioc[];
60f56dfc	355
6e5e75f2 MH	356	#ifdef DEBUG
	357	if (grfdebug & GDB_LOCK)
	358	printf("grflock(%d): dev %x flags %x lockpid %x\n",
	359	p->p_pid, gp-grf_softc, gp->g_flags,
	360	gp->g_lockp ? gp->g_lockp->p_pid : -1);
	361	#endif
	362	if (gp->g_pid) {
	363	#ifdef DEBUG
	364	if (grfdebug & GDB_LOCK)
	365	printf(" lockpslot %d lockslot %d lock[lockslot] %d\n",
	366	gp->g_lock->gl_lockslot, gp->g_lockpslot,
	367	gp->g_lock->gl_locks[gp->g_lockpslot]);
	368	#endif
	369	gp->g_lock->gl_lockslot = 0;
	370	if (gp->g_lock->gl_locks[gp->g_lockpslot] == 0) {
	371	gp->g_lockp = NULL;
	372	gp->g_lockpslot = 0;
	373	}
	374	}
	375	if (gp->g_lockp) {
	376	if (gp->g_lockp == p)
	377	return(EBUSY);
	378	if (!block)
	379	return(OEAGAIN);
	380	do {
	381	gp->g_flags \|= GF_WANTED;
	382	if (error = tsleep((caddr_t)&gp->g_flags,
	383	(PZERO+1) \| PCATCH, devioc, 0))
	384	return (error);
	385	} while (gp->g_lockp);
	386	}
	387	gp->g_lockp = p;
	388	if (gp->g_pid) {
	389	int slot = grffindpid(gp);
	390
	391	#ifdef DEBUG
	392	if (grfdebug & GDB_LOCK)
	393	printf(" slot %d\n", slot);
	394	#endif
	395	gp->g_lockpslot = gp->g_lock->gl_lockslot = slot;
	396	gp->g_lock->gl_locks[slot] = 1;
	397	}
	398	return(0);
60f56dfc KM	399	}
60f56dfc KM	400
6e5e75f2 MH	401	grfunlock(gp)
6e5e75f2 MH	402	register struct grf_softc *gp;
60f56dfc	403	{
6e5e75f2 MH	404	#ifdef DEBUG
	405	if (grfdebug & GDB_LOCK)
	406	printf("grfunlock(%d): dev %x flags %x lockpid %d\n",
	407	curproc->p_pid, gp-grf_softc, gp->g_flags,
	408	gp->g_lockp ? gp->g_lockp->p_pid : -1);
	409	#endif
	410	if (gp->g_lockp != curproc)
	411	return(EBUSY);
	412	if (gp->g_pid) {
	413	#ifdef DEBUG
	414	if (grfdebug & GDB_LOCK)
	415	printf(" lockpslot %d lockslot %d lock[lockslot] %d\n",
	416	gp->g_lock->gl_lockslot, gp->g_lockpslot,
	417	gp->g_lock->gl_locks[gp->g_lockpslot]);
	418	#endif
	419	gp->g_lock->gl_locks[gp->g_lockpslot] = 0;
	420	gp->g_lockpslot = gp->g_lock->gl_lockslot = 0;
60f56dfc	421	}
6e5e75f2 MH	422	if (gp->g_flags & GF_WANTED) {
	423	wakeup((caddr_t)&gp->g_flags);
	424	gp->g_flags &= ~GF_WANTED;
	425	}
	426	gp->g_lockp = NULL;
	427	return(0);
60f56dfc KM	428	}
60f56dfc KM	429
60f56dfc KM	430	/*
	431	* Convert a BSD style minor devno to HPUX style.
	432	* We cannot just create HPUX style nodes as they require 24 bits
	433	* of minor device number and we only have 8.
	434	* XXX: This may give the wrong result for remote stats of other
	435	* machines where device 10 exists.
	436	*/
	437	grfdevno(dev)
	438	dev_t dev;
	439	{
	440	int unit = GRFUNIT(dev);
	441	struct grf_softc *gp = &grf_softc[unit];
7b7da76f	442	int newdev;
60f56dfc KM	443
	444	if (unit >= NGRF \|\| (gp->g_flags&GF_ALIVE) == 0)
	445	return(bsdtohpuxdev(dev));
	446	/* magic major number */
	447	newdev = 12 << 24;
	448	/* now construct minor number */
950dea01	449	if (gp->g_display.gd_regaddr != (caddr_t)GRFIADDR) {
7b7da76f	450	int sc = patosc(gp->g_display.gd_regaddr);
950dea01 MH	451	newdev \|= (sc << 16) \| 0x200;
950dea01 MH	452	}
60f56dfc KM	453	if (dev & GRFIMDEV)
	454	newdev \|= 0x02;
	455	else if (dev & GRFOVDEV)
	456	newdev \|= 0x01;
	457	#ifdef DEBUG
	458	if (grfdebug & GDB_DEVNO)
	459	printf("grfdevno: dev %x newdev %x\n", dev, newdev);
	460	#endif
	461	return(newdev);
	462	}
6e5e75f2 MH	463
6e5e75f2 MH	464	#endif /* HPUXCOMPAT */
60f56dfc	465
88f29710	466	grfmmap(dev, addrp, p)
60f56dfc KM	467	dev_t dev;
60f56dfc KM	468	caddr_t *addrp;
88f29710	469	struct proc *p;
60f56dfc KM	470	{
60f56dfc KM	471	struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
22d09b27 KM	472	int len, error;
	473	struct vnode vn;
	474	struct specinfo si;
	475	int flags;
60f56dfc KM	476
	477	#ifdef DEBUG
	478	if (grfdebug & GDB_MMAP)
05d14dfb	479	printf("grfmmap(%d): addr %x\n", p->p_pid, *addrp);
60f56dfc KM	480	#endif
60f56dfc KM	481	len = gp->g_display.gd_regsize + gp->g_display.gd_fbsize;
a24ecba5	482	flags = MAP_SHARED;
22d09b27 KM	483	if (*addrp)
	484	flags \|= MAP_FIXED;
	485	else
	486	addrp = (caddr_t)0x1000000; / XXX */
	487	vn.v_type = VCHR; /* XXX */
	488	vn.v_specinfo = &si; /* XXX */
	489	vn.v_rdev = dev; /* XXX */
88f29710	490	error = vm_mmap(&p->p_vmspace->vm_map, (vm_offset_t *)addrp,
1990cc1d MH	491	(vm_size_t)len, VM_PROT_ALL, VM_PROT_ALL,
1990cc1d MH	492	flags, (caddr_t)&vn, 0);
6e5e75f2 MH	493	if (error == 0)
6e5e75f2 MH	494	(void) (gp->g_sw->gd_mode)(gp, GM_MAP, addrp);
96d5f73d	495	return(error);
60f56dfc KM	496	}
60f56dfc KM	497
88f29710	498	grfunmmap(dev, addr, p)
60f56dfc KM	499	dev_t dev;
60f56dfc KM	500	caddr_t addr;
88f29710	501	struct proc *p;
60f56dfc	502	{
22d09b27 KM	503	struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
	504	vm_size_t size;
	505	int rv;
60f56dfc KM	506
	507	#ifdef DEBUG
	508	if (grfdebug & GDB_MMAP)
22d09b27	509	printf("grfunmmap(%d): dev %x addr %x\n", p->p_pid, dev, addr);
60f56dfc	510	#endif
22d09b27 KM	511	if (addr == 0)
22d09b27 KM	512	return(EINVAL); /* XXX: how do we deal with this? */
6e5e75f2	513	(void) (*gp->g_sw->gd_mode)(gp, GM_UNMAP, 0);
22d09b27	514	size = round_page(gp->g_display.gd_regsize + gp->g_display.gd_fbsize);
6055b25f	515	rv = vm_deallocate(&p->p_vmspace->vm_map, (vm_offset_t)addr, size);
22d09b27	516	return(rv == KERN_SUCCESS ? 0 : EINVAL);
60f56dfc KM	517	}
	518
	519	#ifdef HPUXCOMPAT
	520	iommap(dev, addrp)
	521	dev_t dev;
	522	caddr_t *addrp;
	523	{
60f56dfc KM	524
	525	#ifdef DEBUG
	526	if (grfdebug & (GDB_MMAP\|GDB_IOMAP))
8a6691f4	527	printf("iommap(%d): addr %x\n", curproc->p_pid, *addrp);
60f56dfc	528	#endif
22d09b27	529	return(EINVAL);
60f56dfc KM	530	}
	531
	532	iounmmap(dev, addr)
	533	dev_t dev;
	534	caddr_t addr;
	535	{
22d09b27	536	int unit = minor(dev);
60f56dfc KM	537
	538	#ifdef DEBUG
	539	if (grfdebug & (GDB_MMAP\|GDB_IOMAP))
	540	printf("iounmmap(%d): id %d addr %x\n",
88f29710	541	curproc->p_pid, unit, addr);
60f56dfc	542	#endif
22d09b27	543	return(0);
60f56dfc KM	544	}
	545
	546	/*
	547	* Processes involved in framebuffer mapping via GCSLOT are recorded in
	548	* an array of pids. The first element is used to record the last slot used
	549	* (for faster lookups). The remaining elements record up to GRFMAXLCK-1
	550	* process ids. Returns a slot number between 1 and GRFMAXLCK or 0 if no
	551	* slot is available.
	552	*/
	553	grffindpid(gp)
	554	struct grf_softc *gp;
	555	{
	556	register short pid, *sp;
	557	register int i, limit;
	558	int ni;
	559
	560	if (gp->g_pid == NULL) {
	561	gp->g_pid = (short *)
	562	malloc(GRFMAXLCK * sizeof(short), M_DEVBUF, M_WAITOK);
	563	bzero((caddr_t)gp->g_pid, GRFMAXLCK * sizeof(short));
	564	}
88f29710	565	pid = curproc->p_pid;
60f56dfc KM	566	ni = limit = gp->g_pid[0];
	567	for (i = 1, sp = &gp->g_pid[1]; i <= limit; i++, sp++) {
	568	if (*sp == pid)
	569	goto done;
	570	if (*sp == 0)
	571	ni = i;
	572	}
	573	i = ni;
	574	if (i < limit) {
	575	gp->g_pid[i] = pid;
	576	goto done;
	577	}
	578	if (++i == GRFMAXLCK)
	579	return(0);
	580	gp->g_pid[0] = i;
	581	gp->g_pid[i] = pid;
	582	done:
	583	#ifdef DEBUG
	584	if (grfdebug & GDB_LOCK)
	585	printf("grffindpid(%d): slot %d of %d\n",
	586	pid, i, gp->g_pid[0]);
	587	#endif
	588	return(i);
	589	}
	590
	591	grfrmpid(gp)
	592	struct grf_softc *gp;
	593	{
	594	register short pid, *sp;
	595	register int limit, i;
	596	int mi;
	597
	598	if (gp->g_pid == NULL \|\| (limit = gp->g_pid[0]) == 0)
	599	return;
88f29710	600	pid = curproc->p_pid;
60f56dfc KM	601	limit = gp->g_pid[0];
	602	mi = 0;
	603	for (i = 1, sp = &gp->g_pid[1]; i <= limit; i++, sp++) {
	604	if (*sp == pid)
	605	*sp = 0;
	606	else if (*sp)
	607	mi = i;
	608	}
	609	i = mi;
	610	if (i < limit)
	611	gp->g_pid[0] = i;
	612	#ifdef DEBUG
	613	if (grfdebug & GDB_LOCK)
	614	printf("grfrmpid(%d): slot %d of %d\n",
	615	pid, sp-gp->g_pid, gp->g_pid[0]);
	616	#endif
	617	}
	618
60f56dfc KM	619	grflckmmap(dev, addrp)
	620	dev_t dev;
	621	caddr_t *addrp;
	622	{
60f56dfc	623	#ifdef DEBUG
88f29710 MK	624	struct proc p = curproc; / XXX */
88f29710 MK	625
60f56dfc KM	626	if (grfdebug & (GDB_MMAP\|GDB_LOCK))
60f56dfc KM	627	printf("grflckmmap(%d): addr %x\n",
05d14dfb	628	p->p_pid, *addrp);
60f56dfc	629	#endif
22d09b27	630	return(EINVAL);
60f56dfc KM	631	}
	632
	633	grflckunmmap(dev, addr)
	634	dev_t dev;
	635	caddr_t addr;
	636	{
88f29710	637	#ifdef DEBUG
60f56dfc KM	638	int unit = minor(dev);
60f56dfc KM	639
60f56dfc KM	640	if (grfdebug & (GDB_MMAP\|GDB_LOCK))
60f56dfc KM	641	printf("grflckunmmap(%d): id %d addr %x\n",
88f29710	642	curproc->p_pid, unit, addr);
60f56dfc	643	#endif
60f56dfc KM	644	return(EINVAL);
	645	}
	646	#endif /* HPUXCOMPAT */
22d09b27	647
60f56dfc	648	#endif /* NGRF > 0 */