Initial revision

1 files changed, 1160 insertions, 0 deletions

diff --git a/bsd/drm_drv.h b/bsd/drm_drv.h
new file mode 100644
index 00000000..4e5d76fb
--- /dev/null
+++ b/bsd/drm_drv.h
@@ -0,0 +1,1160 @@
+/* drm_drv.h -- Generic driver template -*- linux-c -*-
+ * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
+ *
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+/*
+ * To use this template, you must at least define the following (samples
+ * given for the MGA driver):
+ *
+ * #define DRIVER_AUTHOR	"VA Linux Systems, Inc."
+ *
+ * #define DRIVER_NAME		"mga"
+ * #define DRIVER_DESC		"Matrox G200/G400"
+ * #define DRIVER_DATE		"20001127"
+ *
+ * #define DRIVER_MAJOR		2
+ * #define DRIVER_MINOR		0
+ * #define DRIVER_PATCHLEVEL	2
+ *
+ * #define DRIVER_IOCTL_COUNT	DRM_ARRAY_SIZE( mga_ioctls )
+ *
+ * #define DRM(x)		mga_##x
+ */
+
+#ifndef __MUST_HAVE_AGP
+#define __MUST_HAVE_AGP			0
+#endif
+#ifndef __HAVE_CTX_BITMAP
+#define __HAVE_CTX_BITMAP		0
+#endif
+#ifndef __HAVE_DMA_IRQ
+#define __HAVE_DMA_IRQ			0
+#endif
+#ifndef __HAVE_DMA_QUEUE
+#define __HAVE_DMA_QUEUE		0
+#endif
+#ifndef __HAVE_MULTIPLE_DMA_QUEUES
+#define __HAVE_MULTIPLE_DMA_QUEUES	0
+#endif
+#ifndef __HAVE_DMA_SCHEDULE
+#define __HAVE_DMA_SCHEDULE		0
+#endif
+#ifndef __HAVE_DMA_FLUSH
+#define __HAVE_DMA_FLUSH		0
+#endif
+#ifndef __HAVE_DMA_READY
+#define __HAVE_DMA_READY		0
+#endif
+#ifndef __HAVE_DMA_QUIESCENT
+#define __HAVE_DMA_QUIESCENT		0
+#endif
+#ifndef __HAVE_RELEASE
+#define __HAVE_RELEASE			0
+#endif
+#ifndef __HAVE_COUNTERS
+#define __HAVE_COUNTERS			0
+#endif
+#ifndef __HAVE_SG
+#define __HAVE_SG			0
+#endif
+#ifndef __HAVE_KERNEL_CTX_SWITCH
+#define __HAVE_KERNEL_CTX_SWITCH	0
+#endif
+#ifndef PCI_ANY_ID
+#define PCI_ANY_ID	~0
+#endif
+
+#ifndef DRIVER_PREINIT
+#define DRIVER_PREINIT()
+#endif
+#ifndef DRIVER_POSTINIT
+#define DRIVER_POSTINIT()
+#endif
+#ifndef DRIVER_PRERELEASE
+#define DRIVER_PRERELEASE()
+#endif
+#ifndef DRIVER_PRETAKEDOWN
+#define DRIVER_PRETAKEDOWN()
+#endif
+#ifndef DRIVER_POSTCLEANUP
+#define DRIVER_POSTCLEANUP()
+#endif
+#ifndef DRIVER_PRESETUP
+#define DRIVER_PRESETUP()
+#endif
+#ifndef DRIVER_POSTSETUP
+#define DRIVER_POSTSETUP()
+#endif
+#ifndef DRIVER_IOCTLS
+#define DRIVER_IOCTLS
+#endif
+#ifndef DRIVER_FOPS
+#if DRM_LINUX
+#include <sys/file.h>
+#include <sys/proc.h>
+#include <machine/../linux/linux.h>
+#include <machine/../linux/linux_proto.h>
+#include "drm_linux.h"
+#endif
+#endif
+
+
+/*
+ * The default number of instances (minor numbers) to initialize.
+ */
+#ifndef DRIVER_NUM_CARDS
+#define DRIVER_NUM_CARDS 1
+#endif
+
+static int DRM(init)(device_t nbdev);
+static void DRM(cleanup)(device_t nbdev);
+
+#define CDEV_MAJOR	145
+#define DRIVER_SOFTC(unit) \
+	((drm_device_t *) devclass_get_softc(DRM(devclass), unit))
+
+#if __REALLY_HAVE_AGP
+MODULE_DEPEND(DRIVER_NAME, agp, 1, 1, 1);
+#endif
+#if DRM_LINUX
+MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
+#endif
+
+static drm_device_t	*DRM(device);
+static int		*DRM(minor);
+static int		DRM(numdevs) = 0;
+
+
+static drm_ioctl_desc_t		  DRM(ioctls)[] = {
+	[DRM_IOCTL_NR(DRM_IOCTL_VERSION)]       = { DRM(version),     0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)]    = { DRM(getunique),   0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)]     = { DRM(getmagic),    0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)]     = { DRM(irq_busid),   0, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)]       = { DRM(getmap),      0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)]    = { DRM(getclient),   0, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)]     = { DRM(getstats),    0, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)]    = { DRM(setunique),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_BLOCK)]         = { DRM(block),       1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)]       = { DRM(unblock),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)]    = { DRM(authmagic),   1, 1 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)]       = { DRM(addmap),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)]        = { DRM(rmmap),       1, 0 },
+
+#if __HAVE_CTX_BITMAP
+	[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { DRM(setsareactx), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { DRM(getsareactx), 1, 0 },
+#endif
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)]       = { DRM(addctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)]        = { DRM(rmctx),       1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)]       = { DRM(modctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)]       = { DRM(getctx),      1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)]    = { DRM(switchctx),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)]       = { DRM(newctx),      1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)]       = { DRM(resctx),      1, 0 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)]      = { DRM(adddraw),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)]       = { DRM(rmdraw),      1, 1 },
+
+	[DRM_IOCTL_NR(DRM_IOCTL_LOCK)]	        = { DRM(lock),        1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)]        = { DRM(unlock),      1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_FINISH)]        = { DRM(finish),      1, 0 },
+
+#if __HAVE_DMA
+	[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)]      = { DRM(addbufs),     1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)]     = { DRM(markbufs),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)]     = { DRM(infobufs),    1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)]      = { DRM(mapbufs),     1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)]     = { DRM(freebufs),    1, 0 },
+
+	/* The DRM_IOCTL_DMA ioctl should be defined by the driver.
+	 */
+#if __HAVE_DMA_IRQ
+	[DRM_IOCTL_NR(DRM_IOCTL_CONTROL)]       = { DRM(control),     1, 1 },
+#endif
+#endif
+
+#if __REALLY_HAVE_AGP
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)]   = { DRM(agp_acquire), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)]   = { DRM(agp_release), 1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)]    = { DRM(agp_enable),  1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)]      = { DRM(agp_info),    1, 0 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)]     = { DRM(agp_alloc),   1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)]      = { DRM(agp_free),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)]      = { DRM(agp_bind),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)]    = { DRM(agp_unbind),  1, 1 },
+#endif
+
+#if __REALLY_HAVE_SG
+	[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)]      = { DRM(sg_alloc),    1, 1 },
+	[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)]       = { DRM(sg_free),     1, 1 },
+#endif
+
+	DRIVER_IOCTLS
+};
+
+#define DRIVER_IOCTL_COUNT	DRM_ARRAY_SIZE( DRM(ioctls) )
+
+
+static int DRM(probe)(device_t dev)
+{
+	const char *s = 0;
+
+	int pciid=pci_get_devid(dev);
+	int vendor = (pciid & 0x0000ffff);
+	int device = (pciid & 0xffff0000) >> 16;
+	int i=0, done=0;
+	DRM_INFO("Checking PCI vendor=%d, device=%d\n", vendor, device);
+	while ( !done && (DRM(devicelist)[i].vendor != 0 ) ) {
+		if ( (DRM(devicelist)[i].vendor == vendor) &&
+		     (DRM(devicelist)[i].device == device) ) {
+			done=1;
+			if ( DRM(devicelist)[i].supported )
+				s = DRM(devicelist)[i].name;
+			else
+				DRM_INFO("%s not supported\n", DRM(devicelist)[i].name);
+		}
+		i++;
+	}
+	
+	if (s) {
+		device_set_desc(dev, s);
+		return 0;
+	}
+
+	return ENXIO;
+}
+
+static int DRM(attach)(device_t dev)
+{
+	return DRM(init)(dev);
+}
+
+static int DRM(detach)(device_t dev)
+{
+	DRM(cleanup)(dev);
+	return 0;
+}
+
+static device_method_t DRM(methods)[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		DRM( probe)),
+	DEVMETHOD(device_attach,	DRM( attach)),
+	DEVMETHOD(device_detach,	DRM( detach)),
+
+	{ 0, 0 }
+};
+
+static driver_t DRM(driver) = {
+	"drm",
+	DRM(methods),
+	sizeof(drm_device_t),
+};
+
+static devclass_t DRM( devclass);
+
+static struct cdevsw DRM( cdevsw) = {
+	/* open */	DRM( open ),
+	/* close */	DRM( close ),
+	/* read */	DRM( read ),
+	/* write */	DRM( write ),
+	/* ioctl */	DRM( ioctl ),
+	/* poll */	DRM( poll ),
+	/* mmap */	DRM( mmap ),
+	/* strategy */	nostrategy,
+	/* name */	DRIVER_NAME,
+	/* maj */	CDEV_MAJOR,
+	/* dump */	nodump,
+	/* psize */	nopsize,
+	/* flags */	D_TTY | D_TRACKCLOSE,
+#if __FreeBSD_version >= 500000
+	/* kqfilter */	0
+#else
+	/* bmaj */	-1
+#endif
+};
+
+static int DRM(setup)( drm_device_t *dev )
+{
+	int i;
+
+	DRIVER_PRESETUP();
+	atomic_set( &dev->ioctl_count, 0 );
+	atomic_set( &dev->vma_count, 0 );
+	dev->buf_use = 0;
+	atomic_set( &dev->buf_alloc, 0 );
+
+#if __HAVE_DMA
+	i = DRM(dma_setup)( dev );
+	if ( i < 0 )
+		return i;
+#endif
+
+	dev->counters  = 6 + __HAVE_COUNTERS;
+	dev->types[0]  = _DRM_STAT_LOCK;
+	dev->types[1]  = _DRM_STAT_OPENS;
+	dev->types[2]  = _DRM_STAT_CLOSES;
+	dev->types[3]  = _DRM_STAT_IOCTLS;
+	dev->types[4]  = _DRM_STAT_LOCKS;
+	dev->types[5]  = _DRM_STAT_UNLOCKS;
+#ifdef __HAVE_COUNTER6
+	dev->types[6]  = __HAVE_COUNTER6;
+#endif
+#ifdef __HAVE_COUNTER7
+	dev->types[7]  = __HAVE_COUNTER7;
+#endif
+#ifdef __HAVE_COUNTER8
+	dev->types[8]  = __HAVE_COUNTER8;
+#endif
+#ifdef __HAVE_COUNTER9
+	dev->types[9]  = __HAVE_COUNTER9;
+#endif
+#ifdef __HAVE_COUNTER10
+	dev->types[10] = __HAVE_COUNTER10;
+#endif
+#ifdef __HAVE_COUNTER11
+	dev->types[11] = __HAVE_COUNTER11;
+#endif
+#ifdef __HAVE_COUNTER12
+	dev->types[12] = __HAVE_COUNTER12;
+#endif
+#ifdef __HAVE_COUNTER13
+	dev->types[13] = __HAVE_COUNTER13;
+#endif
+#ifdef __HAVE_COUNTER14
+	dev->types[14] = __HAVE_COUNTER14;
+#endif
+#ifdef __HAVE_COUNTER15
+	dev->types[14] = __HAVE_COUNTER14;
+#endif
+
+	for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ )
+		atomic_set( &dev->counts[i], 0 );
+
+	for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
+		dev->magiclist[i].head = NULL;
+		dev->magiclist[i].tail = NULL;
+	}
+
+	dev->maplist = DRM(alloc)(sizeof(*dev->maplist),
+				  DRM_MEM_MAPS);
+	if(dev->maplist == NULL) DRM_OS_RETURN(ENOMEM);
+	memset(dev->maplist, 0, sizeof(*dev->maplist));
+	TAILQ_INIT(dev->maplist);
+	dev->map_count = 0;
+
+	dev->vmalist = NULL;
+	dev->lock.hw_lock = NULL;
+	dev->lock.lock_queue = 0;
+	dev->queue_count = 0;
+	dev->queue_reserved = 0;
+	dev->queue_slots = 0;
+	dev->queuelist = NULL;
+	dev->irq = 0;
+	dev->context_flag = 0;
+	dev->interrupt_flag = 0;
+	dev->dma_flag = 0;
+	dev->last_context = 0;
+	dev->last_switch = 0;
+	dev->last_checked = 0;
+#if __FreeBSD_version >= 500000
+	callout_init( &dev->timer, 1 );
+#else
+	callout_init( &dev->timer );
+#endif
+	dev->context_wait = 0;
+
+	dev->ctx_start = 0;
+	dev->lck_start = 0;
+
+	dev->buf_rp = dev->buf;
+	dev->buf_wp = dev->buf;
+	dev->buf_end = dev->buf + DRM_BSZ;
+	dev->buf_sigio = NULL;
+	dev->buf_readers = 0;
+	dev->buf_writers = 0;
+	dev->buf_selecting = 0;
+
+	DRM_DEBUG( "\n" );
+
+	/* The kernel's context could be created here, but is now created
+	 * in drm_dma_enqueue.	This is more resource-efficient for
+	 * hardware that does not do DMA, but may mean that
+	 * drm_select_queue fails between the time the interrupt is
+	 * initialized and the time the queues are initialized.
+	 */
+	DRIVER_POSTSETUP();
+	return 0;
+}
+
+
+static int DRM(takedown)( drm_device_t *dev )
+{
+	drm_magic_entry_t *pt, *next;
+	drm_map_t *map;
+	drm_map_list_entry_t *list;
+	drm_vma_entry_t *vma, *vma_next;
+	int i;
+
+	DRM_DEBUG( "\n" );
+
+	DRIVER_PRETAKEDOWN();
+#if __HAVE_DMA_IRQ
+	if ( dev->irq ) DRM(irq_uninstall)( dev );
+#endif
+
+	DRM_OS_LOCK;
+	callout_stop( &dev->timer );
+
+	if ( dev->devname ) {
+		DRM(free)( dev->devname, strlen( dev->devname ) + 1,
+			   DRM_MEM_DRIVER );
+		dev->devname = NULL;
+	}
+
+	if ( dev->unique ) {
+		DRM(free)( dev->unique, strlen( dev->unique ) + 1,
+			   DRM_MEM_DRIVER );
+		dev->unique = NULL;
+		dev->unique_len = 0;
+	}
+				/* Clear pid list */
+	for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
+		for ( pt = dev->magiclist[i].head ; pt ; pt = next ) {
+			next = pt->next;
+			DRM(free)( pt, sizeof(*pt), DRM_MEM_MAGIC );
+		}
+		dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
+	}
+
+#if __REALLY_HAVE_AGP
+				/* Clear AGP information */
+	if ( dev->agp ) {
+		drm_agp_mem_t *entry;
+		drm_agp_mem_t *nexte;
+
+				/* Remove AGP resources, but leave dev->agp
+                                   intact until drv_cleanup is called. */
+		for ( entry = dev->agp->memory ; entry ; entry = nexte ) {
+			nexte = entry->next;
+			if ( entry->bound ) DRM(unbind_agp)( entry->handle );
+			DRM(free_agp)( entry->handle, entry->pages );
+			DRM(free)( entry, sizeof(*entry), DRM_MEM_AGPLISTS );
+		}
+		dev->agp->memory = NULL;
+
+		if ( dev->agp->acquired ) DRM(agp_do_release)();
+
+		dev->agp->acquired = 0;
+		dev->agp->enabled  = 0;
+	}
+#endif
+
+				/* Clear vma list (only built for debugging) */
+	if ( dev->vmalist ) {
+		for ( vma = dev->vmalist ; vma ; vma = vma_next ) {
+			vma_next = vma->next;
+			DRM(free)( vma, sizeof(*vma), DRM_MEM_VMAS );
+		}
+		dev->vmalist = NULL;
+	}
+
+	if( dev->maplist ) {
+		while ((list=TAILQ_FIRST(dev->maplist))) {
+			map = list->map;
+			switch ( map->type ) {
+			case _DRM_REGISTERS:
+			case _DRM_FRAME_BUFFER:
+#if __REALLY_HAVE_MTRR
+				if ( map->mtrr >= 0 ) {
+					int retcode;
+					retcode = mtrr_del( map->mtrr,
+							    map->offset,
+							    map->size );
+					DRM_DEBUG( "mtrr_del=%d\n", retcode );
+				}
+#endif
+				DRM(ioremapfree)( map->handle, map->size );
+				break;
+			case _DRM_SHM:
+				DRM(free_pages)((unsigned long)map->handle,
+					       DRM(order)(map->size)
+					       - PAGE_SHIFT,
+					       DRM_MEM_SAREA);
+				break;
+
+			case _DRM_AGP:
+				/* Do nothing here, because this is all
+				 * handled in the AGP/GART driver.
+				 */
+				break;
+                       case _DRM_SCATTER_GATHER:
+				/* Handle it, but do nothing, if REALLY_HAVE_SG
+				 * isn't defined.
+				 */
+#if __REALLY_HAVE_SG
+				if(dev->sg) {
+					DRM(sg_cleanup)(dev->sg);
+					dev->sg = NULL;
+				}
+#endif
+				break;
+			}
+			TAILQ_REMOVE(dev->maplist, list, link);
+			DRM(free)(list, sizeof(*list), DRM_MEM_MAPS);
+			DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
+		}
+		DRM(free)(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
+		dev->maplist   = NULL;
+ 	}
+
+#if __HAVE_DMA_QUEUE || __HAVE_MULTIPLE_DMA_QUEUES
+	if ( dev->queuelist ) {
+		for ( i = 0 ; i < dev->queue_count ; i++ ) {
+			DRM(waitlist_destroy)( &dev->queuelist[i]->waitlist );
+			if ( dev->queuelist[i] ) {
+				DRM(free)( dev->queuelist[i],
+					  sizeof(*dev->queuelist[0]),
+					  DRM_MEM_QUEUES );
+				dev->queuelist[i] = NULL;
+			}
+		}
+		DRM(free)( dev->queuelist,
+			  dev->queue_slots * sizeof(*dev->queuelist),
+			  DRM_MEM_QUEUES );
+		dev->queuelist = NULL;
+	}
+	dev->queue_count = 0;
+#endif
+
+#if __HAVE_DMA
+	DRM(dma_takedown)( dev );
+#endif
+	if ( dev->lock.hw_lock ) {
+		dev->lock.hw_lock = NULL; /* SHM removed */
+		dev->lock.pid = 0;
+		DRM_OS_WAKEUP_INT(&dev->lock.lock_queue);
+	}
+	DRM_OS_UNLOCK;
+
+	return 0;
+}
+
+/*
+ * Figure out how many instances to initialize.
+ */
+static int drm_count_cards(void)
+{
+	int num = 0;
+#if defined(DRIVER_CARD_LIST)
+	int i;
+	drm_pci_list_t *l;
+	u16 device, vendor;
+	struct pci_dev *pdev = NULL;
+#endif
+
+	DRM_DEBUG( "\n" );
+
+#if defined(DRIVER_COUNT_CARDS)
+	num = DRIVER_COUNT_CARDS();
+#elif defined(DRIVER_CARD_LIST)
+	for (i = 0, l = DRIVER_CARD_LIST; l[i].vendor != 0; i++) {
+		pdev = NULL;
+		vendor = l[i].vendor;
+		device = l[i].device;
+		if(device == 0xffff) device = PCI_ANY_ID;
+		if(vendor == 0xffff) vendor = PCI_ANY_ID;
+		while ((pdev = pci_find_device(vendor, device, pdev))) {
+			num++;	/* FIXME: What about two cards of the same device id? */
+		}
+	}
+#else
+	num = DRIVER_NUM_CARDS;
+#endif
+	DRM_DEBUG("numdevs = %d\n", num);
+	return num;
+}
+
+/* drm_init is called via init_module at module load time, or via
+ * linux/init/main.c (this is not currently supported).
+ */
+static int DRM(init)( device_t nbdev )
+{
+
+	drm_device_t *dev;
+	int i;
+#if __HAVE_CTX_BITMAP
+	int retcode;
+#endif
+	DRM_DEBUG( "\n" );
+
+#ifdef MODULE
+	DRM(parse_options)( drm_opts );
+#endif
+
+	DRM(numdevs) = drm_count_cards();
+	/* Force at least one instance. */
+	if (DRM(numdevs) <= 0)
+		DRM(numdevs) = 1;
+
+	DRM(device) = DRM_OS_MALLOC(sizeof(*DRM(device)) * DRM(numdevs));
+	if (!DRM(device)) {
+		DRM_OS_RETURN(ENOMEM);
+	}
+	DRM(minor) = DRM_OS_MALLOC(sizeof(*(DRM(minor))) * DRM(numdevs));
+	if (!DRM(minor)) {
+		DRM_OS_FREE(DRM(device));
+		DRM_OS_RETURN(ENOMEM);
+	}
+
+	DRIVER_PREINIT();
+
+
+	for (i = 0; i < DRM(numdevs); i++) {
+		int unit = device_get_unit(nbdev);
+		/* FIXME??? - multihead !!! */
+		dev = device_get_softc(nbdev);
+		memset( (void *)dev, 0, sizeof(*dev) );
+		DRM(minor)[i]=unit;
+		DRM_OS_SPININIT(dev->count_lock, "drm device");
+		lockinit(&dev->dev_lock, PZERO, "drmlk", 0, 0);
+		dev->device = nbdev;
+		dev->devnode = make_dev( &DRM(cdevsw),
+				unit,
+				DRM_DEV_UID,
+				DRM_DEV_GID,
+				DRM_DEV_MODE,
+				"dri/card%d", unit );
+		dev->name   = DRIVER_NAME;
+		DRM(mem_init)();
+		DRM(sysctl_init)(dev);
+		TAILQ_INIT(&dev->files);
+
+#if __REALLY_HAVE_AGP
+		dev->agp = DRM(agp_init)();
+#if __MUST_HAVE_AGP
+		if ( dev->agp == NULL ) {
+			DRM_ERROR( "Cannot initialize the agpgart module.\n" );
+			DRM(sysctl_cleanup)( dev );
+			destroy_dev(dev->devnode);
+			DRM(takedown)( dev );
+			DRM_OS_RETURN(ENOMEM);
+		}
+#endif
+#if __REALLY_HAVE_MTRR
+		if (dev->agp)
+			dev->agp->agp_mtrr = mtrr_add( dev->agp->agp_info.aper_base,
+				       dev->agp->agp_info.aper_size*1024*1024,
+				       MTRR_TYPE_WRCOMB,
+				       1 );
+#endif
+#endif
+
+#if __HAVE_CTX_BITMAP
+		retcode = DRM(ctxbitmap_init)( dev );
+		if( retcode ) {
+			DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
+			DRM(sysctl_cleanup)( dev );
+			destroy_dev(dev->devnode);
+			DRM(takedown)( dev );
+			return retcode;
+		}
+#endif
+		DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n",
+		  	DRIVER_NAME,
+		  	DRIVER_MAJOR,
+		  	DRIVER_MINOR,
+		  	DRIVER_PATCHLEVEL,
+		  	DRIVER_DATE,
+		  	DRM(minor)[i] );
+	}
+
+	DRIVER_POSTINIT();
+
+	return 0;
+}
+
+/* drm_cleanup is called via cleanup_module at module unload time.
+ */
+static void DRM(cleanup)(device_t nbdev)
+{
+	drm_device_t *dev;
+	int i;
+
+	DRM_DEBUG( "\n" );
+
+	for (i = DRM(numdevs) - 1; i >= 0; i--) {
+		/* FIXME??? - multihead */
+		dev = device_get_softc(nbdev);
+		DRM(sysctl_cleanup)( dev );
+		destroy_dev(dev->devnode);
+#if __HAVE_CTX_BITMAP
+		DRM(ctxbitmap_cleanup)( dev );
+#endif
+
+#if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
+		if ( dev->agp && dev->agp->agp_mtrr >= 0) {
+			int retval;
+			retval = mtrr_del( dev->agp->agp_mtrr,
+				   dev->agp->agp_info.aper_base,
+				   dev->agp->agp_info.aper_size*1024*1024 );
+			DRM_DEBUG( "mtrr_del=%d\n", retval );
+		}
+#endif
+
+		DRM(takedown)( dev );
+
+#if __REALLY_HAVE_AGP
+		if ( dev->agp ) {
+			DRM(agp_uninit)();
+			DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS );
+			dev->agp = NULL;
+		}
+#endif
+	}
+	DRIVER_POSTCLEANUP();
+	DRM_OS_FREE(DRM(minor));
+	DRM_OS_FREE(DRM(device));
+	DRM(numdevs) = 0;
+}
+
+
+int DRM(version)( DRM_OS_IOCTL )
+{
+	drm_version_t version;
+	int len;
+
+	DRM_OS_KRNFROMUSR( version, (drm_version_t *)data, sizeof(version) );
+
+#define DRM_COPY( name, value )						\
+	len = strlen( value );						\
+	if ( len > name##_len ) len = name##_len;			\
+	name##_len = strlen( value );					\
+	if ( len && name ) {						\
+		if ( DRM_OS_COPYTOUSR( name, value, len ) )		\
+			DRM_OS_RETURN(EFAULT);				\
+	}
+
+	version.version_major = DRIVER_MAJOR;
+	version.version_minor = DRIVER_MINOR;
+	version.version_patchlevel = DRIVER_PATCHLEVEL;
+
+	DRM_COPY( version.name, DRIVER_NAME );
+	DRM_COPY( version.date, DRIVER_DATE );
+	DRM_COPY( version.desc, DRIVER_DESC );
+
+	DRM_OS_KRNTOUSR( (drm_version_t *)data, version, sizeof(version) );
+
+	return 0;
+}
+
+int DRM( open)(dev_t kdev, int flags, int fmt, DRM_OS_STRUCTPROC *p)
+{
+	drm_device_t *dev = NULL;
+	int retcode = 0;
+	int i;
+
+	for (i = 0; i < DRM(numdevs); i++) {
+		/* FIXME ??? - multihead */
+		dev    = DRIVER_SOFTC(minor(kdev));
+	}
+	if (!dev) {
+		DRM_OS_RETURN(ENODEV);
+	}
+
+	DRM_DEBUG( "open_count = %d\n", dev->open_count );
+
+	device_busy(dev->device);
+	retcode = DRM(open_helper)(kdev, flags, fmt, p, dev);
+
+	if ( !retcode ) {
+		atomic_inc( &dev->counts[_DRM_STAT_OPENS] );
+		DRM_OS_SPINLOCK( &dev->count_lock );
+		if ( !dev->open_count++ ) {
+			DRM_OS_SPINUNLOCK( &dev->count_lock );
+			return DRM(setup)( dev );
+		}
+		DRM_OS_SPINUNLOCK( &dev->count_lock );
+	}
+	device_unbusy(dev->device);
+
+	return retcode;
+}
+
+int DRM( close)(dev_t kdev, int flags, int fmt, DRM_OS_STRUCTPROC *p)
+{
+	drm_file_t *priv;
+	drm_device_t  *dev    = kdev->si_drv1;
+	int retcode = 0;
+
+	DRM_DEBUG( "open_count = %d\n", dev->open_count );
+	priv = DRM(find_file_by_proc)(dev, p);
+	if (!priv) {
+		DRM_DEBUG("can't find authenticator\n");
+		return EINVAL;
+	}
+
+	DRIVER_PRERELEASE();
+
+	/* ========================================================
+	 * Begin inline drm_release
+	 */
+
+	DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
+		   DRM_OS_CURRENTPID, (long)dev->device, dev->open_count );
+
+	if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
+	    && dev->lock.pid == DRM_OS_CURRENTPID) {
+		DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
+			  DRM_OS_CURRENTPID,
+			  _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
+#if HAVE_DRIVER_RELEASE
+		DRIVER_RELEASE();
+#endif
+		DRM(lock_free)(dev,
+			      &dev->lock.hw_lock->lock,
+			      _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
+		
+				/* FIXME: may require heavy-handed reset of
+                                   hardware at this point, possibly
+                                   processed via a callback to the X
+                                   server. */
+	}
+#if __HAVE_RELEASE
+	else if ( dev->lock.hw_lock ) {
+		/* The lock is required to reclaim buffers */
+		for (;;) {
+			if ( !dev->lock.hw_lock ) {
+				/* Device has been unregistered */
+				retcode = EINTR;
+				break;
+			}
+			if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
+					     DRM_KERNEL_CONTEXT ) ) {
+				dev->lock.pid       = p->p_pid;
+				dev->lock.lock_time = jiffies;
+                                atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
+				break;	/* Got lock */
+			}
+				/* Contention */
+#if 0
+			atomic_inc( &dev->total_sleeps );
+#endif
+			retcode = tsleep(&dev->lock.lock_queue,
+					PZERO|PCATCH,
+					"drmlk2",
+					0);
+			if (retcode)
+				break;
+		}
+		if( !retcode ) {
+			DRIVER_RELEASE();
+			DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+					DRM_KERNEL_CONTEXT );
+		}
+	}
+#elif __HAVE_DMA
+	DRM(reclaim_buffers)( dev, priv->pid );
+#endif
+
+	funsetown(dev->buf_sigio);
+
+	DRM_OS_LOCK;
+	priv = DRM(find_file_by_proc)(dev, p);
+	if (priv) {
+		priv->refs--;
+		if (!priv->refs) {
+			TAILQ_REMOVE(&dev->files, priv, link);
+		}
+	}
+	DRM_OS_UNLOCK;
+
+	DRM(free)( priv, sizeof(*priv), DRM_MEM_FILES );
+
+	/* ========================================================
+	 * End inline drm_release
+	 */
+
+	atomic_inc( &dev->counts[_DRM_STAT_CLOSES] );
+	DRM_OS_SPINLOCK( &dev->count_lock );
+	if ( !--dev->open_count ) {
+		if ( atomic_read( &dev->ioctl_count ) || dev->blocked ) {
+			DRM_ERROR( "Device busy: %ld %d\n",
+				(unsigned long)atomic_read( &dev->ioctl_count ),
+				   dev->blocked );
+			DRM_OS_SPINUNLOCK( &dev->count_lock );
+			DRM_OS_RETURN(EBUSY);
+		}
+		DRM_OS_SPINUNLOCK( &dev->count_lock );
+		device_unbusy(dev->device);
+		return DRM(takedown)( dev );
+	}
+	DRM_OS_SPINUNLOCK( &dev->count_lock );
+
+	
+	DRM_OS_RETURN(retcode);
+}
+
+/* DRM(ioctl) is called whenever a process performs an ioctl on /dev/drm.
+ */
+int DRM(ioctl)( DRM_OS_IOCTL )
+{
+	DRM_OS_DEVICE;
+	int retcode = 0;
+	drm_ioctl_desc_t *ioctl;
+	d_ioctl_t *func;
+	int nr = DRM_IOCTL_NR(cmd);
+	DRM_OS_PRIV;
+
+	atomic_inc( &dev->ioctl_count );
+	atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] );
+	++priv->ioctl_count;
+
+	DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
+		 DRM_OS_CURRENTPID, cmd, nr, (long)dev->device, priv->authenticated );
+
+	switch (cmd) {
+	case FIONBIO:
+		atomic_dec(&dev->ioctl_count);
+		return 0;
+
+	case FIOASYNC:
+		atomic_dec(&dev->ioctl_count);
+		dev->flags |= FASYNC;
+		return 0;
+
+	case FIOSETOWN:
+		atomic_dec(&dev->ioctl_count);
+		return fsetown(*(int *)data, &dev->buf_sigio);
+
+	case FIOGETOWN:
+		atomic_dec(&dev->ioctl_count);
+		*(int *) data = fgetown(dev->buf_sigio);
+		return 0;
+	}
+
+	if ( nr >= DRIVER_IOCTL_COUNT ) {
+		retcode = EINVAL;
+	} else {
+		ioctl = &DRM(ioctls)[nr];
+		func = ioctl->func;
+
+		if ( !func ) {
+			DRM_DEBUG( "no function\n" );
+			retcode = EINVAL;
+		} else if ( ( ioctl->root_only && DRM_OS_CHECKSUSER ) 
+			 || ( ioctl->auth_needed && !priv->authenticated ) ) {
+			retcode = EACCES;
+		} else {
+			retcode = func( kdev, cmd, data, flags, p );
+		}
+	}
+
+	atomic_dec( &dev->ioctl_count );
+	DRM_OS_RETURN(retcode);
+}
+
+int DRM(lock)( DRM_OS_IOCTL )
+{
+	DRM_OS_DEVICE;
+        drm_lock_t lock;
+        int ret = 0;
+#if __HAVE_MULTIPLE_DMA_QUEUES
+	drm_queue_t *q;
+#endif
+#if __HAVE_DMA_HISTOGRAM
+        cycles_t start;
+
+        dev->lck_start = start = get_cycles();
+#endif
+
+	DRM_OS_KRNFROMUSR( lock, (drm_lock_t *)data, sizeof(lock) );
+
+        if ( lock.context == DRM_KERNEL_CONTEXT ) {
+                DRM_ERROR( "Process %d using kernel context %d\n",
+			   DRM_OS_CURRENTPID, lock.context );
+                DRM_OS_RETURN(EINVAL);
+        }
+
+        DRM_DEBUG( "%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
+		   lock.context, DRM_OS_CURRENTPID,
+		   dev->lock.hw_lock->lock, lock.flags );
+
+#if __HAVE_DMA_QUEUE
+        if ( lock.context < 0 )
+                DRM_OS_RETURN(EINVAL);
+#elif __HAVE_MULTIPLE_DMA_QUEUES
+        if ( lock.context < 0 || lock.context >= dev->queue_count )
+                DRM_OS_RETURN(EINVAL);
+	q = dev->queuelist[lock.context];
+#endif
+
+#if __HAVE_DMA_FLUSH
+	ret = DRM(flush_block_and_flush)( dev, lock.context, lock.flags );
+#endif
+        if ( !ret ) {
+                for (;;) {
+                        if ( !dev->lock.hw_lock ) {
+                                /* Device has been unregistered */
+                                ret = EINTR;
+                                break;
+                        }
+                        if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
+					     lock.context ) ) {
+                                dev->lock.pid       = DRM_OS_CURRENTPID;
+                                dev->lock.lock_time = jiffies;
+                                atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
+                                break;  /* Got lock */
+                        }
+
+                                /* Contention */
+			ret = tsleep(&dev->lock.lock_queue,
+					PZERO|PCATCH,
+					"drmlk2",
+					0);
+			if (ret)
+				break;
+                }
+        }
+
+#if __HAVE_DMA_FLUSH
+	DRM(flush_unblock)( dev, lock.context, lock.flags ); /* cleanup phase */
+#endif
+
+        if ( !ret ) {
+
+#if __HAVE_DMA_READY
+                if ( lock.flags & _DRM_LOCK_READY ) {
+			DRIVER_DMA_READY();
+		}
+#endif
+#if __HAVE_DMA_QUIESCENT
+                if ( lock.flags & _DRM_LOCK_QUIESCENT ) {
+			DRIVER_DMA_QUIESCENT();
+		}
+#endif
+#if __HAVE_KERNEL_CTX_SWITCH
+		if ( dev->last_context != lock.context ) {
+			DRM(context_switch)(dev, dev->last_context,
+					    lock.context);
+		}
+#endif
+        }
+
+        DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
+
+#if __HAVE_DMA_HISTOGRAM
+        atomic_inc(&dev->histo.lacq[DRM(histogram_slot)(get_cycles()-start)]);
+#endif
+
+	DRM_OS_RETURN(ret);
+}
+
+
+int DRM(unlock)( DRM_OS_IOCTL )
+{
+	DRM_OS_DEVICE;
+	drm_lock_t lock;
+
+	DRM_OS_KRNFROMUSR( lock, (drm_lock_t *)data, sizeof(lock) ) ;
+
+	if ( lock.context == DRM_KERNEL_CONTEXT ) {
+		DRM_ERROR( "Process %d using kernel context %d\n",
+			   DRM_OS_CURRENTPID, lock.context );
+		DRM_OS_RETURN(EINVAL);
+	}
+
+	atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
+
+#if __HAVE_KERNEL_CTX_SWITCH
+	/* We no longer really hold it, but if we are the next
+	 * agent to request it then we should just be able to
+	 * take it immediately and not eat the ioctl.
+	 */
+	dev->lock.pid = 0;
+	{
+		__volatile__ unsigned int *plock = &dev->lock.hw_lock->lock;
+		unsigned int old, new, prev, ctx;
+
+		ctx = lock.context;
+		do {
+			old  = *plock;
+			new  = ctx;
+			prev = cmpxchg(plock, old, new);
+		} while (prev != old);
+	}
+	wake_up_interruptible(&dev->lock.lock_queue);
+#else
+	DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
+			    DRM_KERNEL_CONTEXT );
+#if __HAVE_DMA_SCHEDULE
+	DRM(dma_schedule)( dev, 1 );
+#endif
+
+	/* FIXME: Do we ever really need to check this???
+	 */
+	if ( 1 /* !dev->context_flag */ ) {
+		if ( DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+				     DRM_KERNEL_CONTEXT ) ) {
+			DRM_ERROR( "\n" );
+		}
+	}
+#endif /* !__HAVE_KERNEL_CTX_SWITCH */
+
+	return 0;
+}
+
+#if DRM_LINUX
+static linux_ioctl_function_t DRM( linux_ioctl);
+static struct linux_ioctl_handler DRM( handler) = {DRM( linux_ioctl), LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
+SYSINIT  (DRM( register),   SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_register_handler, &DRM( handler));
+SYSUNINIT(DRM( unregister), SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_unregister_handler, &DRM( handler));
+
+/*
+ * Linux emulation IOCTL
+ */
+static int
+DRM(linux_ioctl)(DRM_OS_STRUCTPROC *p, struct linux_ioctl_args* args)
+{
+#if (__FreeBSD_version >= 500000)
+    struct file		*fp = p->td_proc->p_fd->fd_ofiles[args->fd];
+#else
+    struct file		*fp = p->p_fd->fd_ofiles[args->fd];
+#endif
+    u_long		cmd = args->cmd;
+    caddr_t             data = (caddr_t) args->arg;
+    /*
+     * Pass the ioctl off to our standard handler.
+     */
+    return(fo_ioctl(fp, cmd, data, p));
+}
+#endif /* DRM_LINUX */