Merge mga-1-0-0-branch into trunk.

1 files changed, 927 insertions, 0 deletions

diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
new file mode 100644
index 00000000..b24d213e
--- /dev/null
+++ b/linux-core/drm_drv.c
@@ -0,0 +1,927 @@
+/* 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 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_IOCTLS
+#define DRIVER_IOCTLS
+#endif
+
+
+static drm_device_t	DRM(device);
+static int              DRM(minor);
+
+static struct file_operations	DRM(fops) = {
+#if LINUX_VERSION_CODE >= 0x020400
+				/* This started being used during 2.4.0-test */
+	owner:   THIS_MODULE,
+#endif
+	open:	 DRM(open),
+	flush:	 DRM(flush),
+	release: DRM(release),
+	ioctl:	 DRM(ioctl),
+	mmap:	 DRM(mmap),
+	read:	 DRM(read),
+	fasync:	 DRM(fasync),
+	poll:	 DRM(poll),
+};
+
+
+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_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
+
+	DRIVER_IOCTLS
+};
+
+#define DRIVER_IOCTL_COUNT	DRM_ARRAY_SIZE( DRM(ioctls) )
+
+#ifdef MODULE
+static char *drm_opts = NULL;
+#endif
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_PARM( drm_opts, "s" );
+
+#ifndef MODULE
+/* DRM(options) is called by the kernel to parse command-line options
+ * passed via the boot-loader (e.g., LILO).  It calls the insmod option
+ * routine, drm_parse_drm.
+ */
+
+static int __init DRM(options)( char *str )
+{
+	DRM(parse_options)( str );
+	return 1;
+}
+
+__setup( DRIVER_NAME "=", DRM(options) );
+#endif
+
+static int DRM(setup)( drm_device_t *dev )
+{
+	int i;
+
+	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 = NULL;
+	dev->map_count = 0;
+	dev->vmalist = NULL;
+	dev->lock.hw_lock = NULL;
+	init_waitqueue_head( &dev->lock.lock_queue );
+	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;
+	init_timer( &dev->timer );
+	init_waitqueue_head( &dev->context_wait );
+
+	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_async = NULL;
+	init_waitqueue_head( &dev->buf_readers );
+	init_waitqueue_head( &dev->buf_writers );
+
+	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.
+	 */
+	return 0;
+}
+
+
+static int DRM(takedown)( drm_device_t *dev )
+{
+	drm_magic_entry_t *pt, *next;
+	drm_map_t *map;
+	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
+
+	down( &dev->struct_sem );
+	del_timer( &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->memory );
+			DRM(free_agp)( entry->memory, 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;
+	}
+
+				/* Clear map area and mtrr information */
+	if ( dev->maplist ) {
+		for ( i = 0 ; i < dev->map_count ; i++ ) {
+			map = dev->maplist[i];
+			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;
+			}
+			DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
+		}
+		DRM(free)( dev->maplist,
+			  dev->map_count * sizeof(*dev->maplist),
+			  DRM_MEM_MAPS );
+		dev->maplist = NULL;
+		dev->map_count = 0;
+	}
+
+#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;
+		wake_up_interruptible( &dev->lock.lock_queue );
+	}
+	up( &dev->struct_sem );
+
+	return 0;
+}
+
+/* drm_init is called via init_module at module load time, or via
+ * linux/init/main.c (this is not currently supported).
+ */
+static int __init drm_init( void )
+{
+	drm_device_t *dev = &DRM(device);
+#if __HAVE_CTX_BITMAP
+	int retcode;
+#endif
+	DRM_DEBUG( "\n" );
+
+	memset( (void *)dev, 0, sizeof(*dev) );
+	dev->count_lock = SPIN_LOCK_UNLOCKED;
+	sema_init( &dev->struct_sem, 1 );
+
+#ifdef MODULE
+	DRM(parse_options)( drm_opts );
+#endif
+	DRIVER_PREINIT();
+
+	DRM(mem_init)();
+
+	if ((DRM(minor) = DRM(stub_register)(DRIVER_NAME, &DRM(fops),dev)) < 0)
+		return -EPERM;
+	dev->device = MKDEV(DRM_MAJOR, DRM(minor) );
+	dev->name   = DRIVER_NAME;
+
+#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(stub_unregister)(DRM(minor));
+		DRM(takedown)( dev );
+		return -ENOMEM;
+	}
+#endif
+#if __REALLY_HAVE_MTRR
+	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(stub_unregister)(DRM(minor));
+		DRM(takedown)( dev );
+		return retcode;
+	}
+#endif
+
+	DRIVER_POSTINIT();
+
+	DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n",
+		  DRIVER_NAME,
+		  DRIVER_MAJOR,
+		  DRIVER_MINOR,
+		  DRIVER_PATCHLEVEL,
+		  DRIVER_DATE,
+		  DRM(minor) );
+
+	return 0;
+}
+
+/* drm_cleanup is called via cleanup_module at module unload time.
+ */
+static void __exit drm_cleanup( void )
+{
+	drm_device_t *dev = &DRM(device);
+
+	DRM_DEBUG( "\n" );
+
+	if ( DRM(stub_unregister)(DRM(minor)) ) {
+		DRM_ERROR( "Cannot unload module\n" );
+	} else {
+		DRM_INFO( "Module unloaded\n" );
+	}
+#if __HAVE_CTX_BITMAP
+	DRM(ctxbitmap_cleanup)( dev );
+#endif
+
+#if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
+	if ( dev->agp && dev->agp->agp_mtrr ) {
+		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
+}
+
+module_init( drm_init );
+module_exit( drm_cleanup );
+
+
+int DRM(version)( struct inode *inode, struct file *filp,
+		  unsigned int cmd, unsigned long arg )
+{
+	drm_version_t version;
+	int len;
+
+	if ( copy_from_user( &version,
+			     (drm_version_t *)arg,
+			     sizeof(version) ) )
+		return -EFAULT;
+
+#define DRM_COPY( name, value )						\
+	len = strlen( value );						\
+	if ( len > name##_len ) len = name##_len;			\
+	name##_len = strlen( value );					\
+	if ( len && name ) {						\
+		if ( copy_to_user( name, value, len ) )			\
+			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 );
+
+	if ( copy_to_user( (drm_version_t *)arg,
+			   &version,
+			   sizeof(version) ) )
+		return -EFAULT;
+	return 0;
+}
+
+int DRM(open)( struct inode *inode, struct file *filp )
+{
+	drm_device_t *dev = &DRM(device);
+	int retcode = 0;
+
+	DRM_DEBUG( "open_count = %d\n", dev->open_count );
+
+	retcode = DRM(open_helper)( inode, filp, dev );
+	if ( !retcode ) {
+#if LINUX_VERSION_CODE < 0x020333
+		MOD_INC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+		atomic_inc( &dev->counts[_DRM_STAT_OPENS] );
+		spin_lock( &dev->count_lock );
+		if ( !dev->open_count++ ) {
+			spin_unlock( &dev->count_lock );
+			return DRM(setup)( dev );
+		}
+		spin_unlock( &dev->count_lock );
+	}
+
+	return retcode;
+}
+
+int DRM(release)( struct inode *inode, struct file *filp )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev;
+	int retcode = 0;
+
+	lock_kernel();
+	dev = priv->dev;
+
+	DRM_DEBUG( "open_count = %d\n", dev->open_count );
+
+	DRIVER_PRERELEASE();
+
+	/* ========================================================
+	 * Begin inline drm_release
+	 */
+
+	DRM_DEBUG( "pid = %d, device = 0x%x, open_count = %d\n",
+		   current->pid, dev->device, dev->open_count );
+
+	if ( dev->lock.hw_lock &&
+	     _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) &&
+	     dev->lock.pid == current->pid ) {
+		DRM_ERROR( "Process %d dead, freeing lock for context %d\n",
+			   current->pid,
+			   _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
+#if __HAVE_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 */
+		DECLARE_WAITQUEUE( entry, current );
+		add_wait_queue( &dev->lock.lock_queue, &entry );
+		for (;;) {
+			current->state = TASK_INTERRUPTIBLE;
+			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	    = priv->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
+			schedule();
+			if ( signal_pending( current ) ) {
+				retcode = -ERESTARTSYS;
+				break;
+			}
+		}
+		current->state = TASK_RUNNING;
+		remove_wait_queue( &dev->lock.lock_queue, &entry );
+		if( !retcode ) {
+			DRIVER_RELEASE();
+			DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+					DRM_KERNEL_CONTEXT );
+		}
+	}
+#else
+	DRM(reclaim_buffers)( dev, priv->pid );
+#endif
+
+	DRM(fasync)( -1, filp, 0 );
+
+	down( &dev->struct_sem );
+	if ( priv->remove_auth_on_close == 1 ) {
+		drm_file_t *temp = dev->file_first;
+		while ( temp ) {
+			temp->authenticated = 0;
+			temp = temp->next;
+		}
+	}
+	if ( priv->prev ) {
+		priv->prev->next = priv->next;
+	} else {
+		dev->file_first	 = priv->next;
+	}
+	if ( priv->next ) {
+		priv->next->prev = priv->prev;
+	} else {
+		dev->file_last	 = priv->prev;
+	}
+	up( &dev->struct_sem );
+
+	DRM(free)( priv, sizeof(*priv), DRM_MEM_FILES );
+
+	/* ========================================================
+	 * End inline drm_release
+	 */
+
+#if LINUX_VERSION_CODE < 0x020333
+	MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
+#endif
+	atomic_inc( &dev->counts[_DRM_STAT_CLOSES] );
+	spin_lock( &dev->count_lock );
+	if ( !--dev->open_count ) {
+		if ( atomic_read( &dev->ioctl_count ) || dev->blocked ) {
+			DRM_ERROR( "Device busy: %d %d\n",
+				   atomic_read( &dev->ioctl_count ),
+				   dev->blocked );
+			spin_unlock( &dev->count_lock );
+			unlock_kernel();
+			return -EBUSY;
+		}
+		spin_unlock( &dev->count_lock );
+		unlock_kernel();
+		return DRM(takedown)( dev );
+	}
+	spin_unlock( &dev->count_lock );
+
+	unlock_kernel();
+	return retcode;
+}
+
+/* DRM(ioctl) is called whenever a process performs an ioctl on /dev/drm.
+ */
+int DRM(ioctl)( struct inode *inode, struct file *filp,
+		unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_ioctl_desc_t *ioctl;
+	drm_ioctl_t *func;
+	int nr = DRM_IOCTL_NR(cmd);
+	int retcode = 0;
+
+	atomic_inc( &dev->ioctl_count );
+	atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] );
+	++priv->ioctl_count;
+
+	DRM_DEBUG( "pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%x, auth=%d\n",
+		   current->pid, cmd, nr, dev->device, priv->authenticated );
+
+	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 && !capable( CAP_SYS_ADMIN ) )||
+			    ( ioctl->auth_needed && !priv->authenticated ) ) {
+			retcode = -EACCES;
+		} else {
+			retcode = func( inode, filp, cmd, arg );
+		}
+	}
+
+	atomic_dec( &dev->ioctl_count );
+	return retcode;
+}
+
+int DRM(lock)( struct inode *inode, struct file *filp,
+	       unsigned int cmd, unsigned long arg )
+{
+        drm_file_t *priv = filp->private_data;
+        drm_device_t *dev = priv->dev;
+        DECLARE_WAITQUEUE( entry, current );
+        drm_lock_t lock;
+        int ret = 0;
+#if __HAVE_MULTIPLE_DMA_QUEUES
+	drm_queue_t *q;
+#endif
+#if DRM_DMA_HISTOGRAM
+        cycles_t start;
+
+        dev->lck_start = start = get_cycles();
+#endif
+
+        if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) )
+		return -EFAULT;
+
+        if ( lock.context == DRM_KERNEL_CONTEXT ) {
+                DRM_ERROR( "Process %d using kernel context %d\n",
+			   current->pid, lock.context );
+                return -EINVAL;
+        }
+
+        DRM_DEBUG( "%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
+		   lock.context, current->pid,
+		   dev->lock.hw_lock->lock, lock.flags );
+
+#if __HAVE_DMA_QUEUE
+        if ( lock.context < 0 )
+                return -EINVAL;
+#elif __HAVE_MULTIPLE_DMA_QUEUES
+        if ( lock.context < 0 || lock.context >= dev->queue_count )
+                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 ) {
+                add_wait_queue( &dev->lock.lock_queue, &entry );
+                for (;;) {
+                        current->state = TASK_INTERRUPTIBLE;
+                        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       = current->pid;
+                                dev->lock.lock_time = jiffies;
+                                atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
+                                break;  /* Got lock */
+                        }
+
+                                /* Contention */
+                        schedule();
+                        if ( signal_pending( current ) ) {
+                                ret = -ERESTARTSYS;
+                                break;
+                        }
+                }
+                current->state = TASK_RUNNING;
+                remove_wait_queue( &dev->lock.lock_queue, &entry );
+        }
+
+#if __HAVE_DMA_FLUSH
+	DRM(flush_unblock)( dev, lock.context, lock.flags ); /* cleanup phase */
+#endif
+
+        if ( !ret ) {
+		sigemptyset( &dev->sigmask );
+		sigaddset( &dev->sigmask, SIGSTOP );
+		sigaddset( &dev->sigmask, SIGTSTP );
+		sigaddset( &dev->sigmask, SIGTTIN );
+		sigaddset( &dev->sigmask, SIGTTOU );
+		dev->sigdata.context = lock.context;
+		dev->sigdata.lock    = dev->lock.hw_lock;
+		block_all_signals( DRM(notifier),
+				   &dev->sigdata, &dev->sigmask );
+
+#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
+        }
+
+        DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
+
+#if DRM_DMA_HISTOGRAM
+        atomic_inc(&dev->histo.lacq[DRM(histogram_slot)(get_cycles()-start)]);
+#endif
+        return ret;
+}
+
+
+int DRM(unlock)( struct inode *inode, struct file *filp,
+		 unsigned int cmd, unsigned long arg )
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->dev;
+	drm_lock_t lock;
+
+	if ( copy_from_user( &lock, (drm_lock_t *)arg, sizeof(lock) ) )
+		return -EFAULT;
+
+	if ( lock.context == DRM_KERNEL_CONTEXT ) {
+		DRM_ERROR( "Process %d using kernel context %d\n",
+			   current->pid, lock.context );
+		return -EINVAL;
+	}
+
+	atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
+
+	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" );
+		}
+	}
+
+	unblock_all_signals();
+	return 0;
+}