index : renesas/drm.git	android live master
	libdrm, cloned from git://anongit.freedesktop.org/mesa/drm	Laurent Pinchart

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log msg author committer range

path: root/shared-core/drm.h

Age	Commit message (Expand)	Author
2006-01-02	make max minor more rational	Dave Airlie
2005-08-17	commit toggle switch to make Linux drm_handle_t unsigned int	Dave Airlie
2005-08-04	Mark some radeon init variables deprecated. These used to be passed in but	Jon Smirl
2005-06-11	fix up drm.h for C++ include as this can be included in user programs	Dave Airlie
2005-06-10	add dragonfly #define from Xorg CVS	Dave Airlie
2005-05-15	wrap config.h include with defined for KERNEL	Dave Airlie
2005-01-16	The patch makes drmAddBufs/drmMapBufs can handle buffers in video memory	Dave Airlie
2005-01-01	Added a new DRM map type _DRM_CONSISTENT for consistent PCI memory. It uses	Felix Kuehling
2004-09-30	Lindent of core build. Drivers checked for no binary diffs. A few files	Jon Smirl
2004-09-16	Let's try adding the dyn-minor patch again. This patch will reuse minor	Jon Smirl
2004-09-15	Back dyn-minor patch out for now. fops handling is broken on some cards	Jon Smirl
2004-09-15	Dynamic device minor support. Minor device numbers will be reused if the	Jon Smirl
2004-09-08	Update doxygen configuration file. Minor documentation updates/fixes.	Jose Fonseca
2004-07-31	patch from RH xorg-x11 tree ported to drm.h	Dave Airlie
2004-07-25	check for __user if not there define it	Dave Airlie
2004-07-25	sync up with current 2.6 kernel bk tree - mostly __user annotations	Dave Airlie
2004-06-02	Added some comments copied from xf86drm.h.	Ian Romanick
2004-06-01	Replace size_t with an ugly, ugly hack. This was done so that code in the	Ian Romanick
2004-03-12	Fixes need to clean up the mess I made with the mesa merge. This code	Jon Smirl
2003-11-05	__linux__ is spelled with a lowercase 'l'	Eric Anholt
2003-11-05	Repo-copy linux/drm/kernel/drm.h to shared/drm/kernel/drm.h and use it on	Eric Anholt
2003-10-23	- Introduce a new ioctl, DRM_IOCTL_SET_VERSION. This ioctl allows the	Eric Anholt
2003-09-12	resolve merge conflicts	Alan Hourihane
2003-05-28	Restore change to _DRM_VBLANK_SIGNAL from rev. 1.41, which was reverted	Leif Delgass
2003-05-27	Merged DRM documentation.	Jose Fonseca
2003-05-20	Support for building DRM module on OpenBSD (Wilbern Cobb, Matthieu Herrb).	David Dawes
2002-12-12	enums should be ints	David Dawes
2002-11-30	vertical blank ioctl can send signal instead of blocking	Michel Daenzer
2002-09-25	common ioctl to wait for vertical blank IRQs	Michel Daenzer
2002-07-05	merged bsd-3-0-0-branch	Alan Hourihane
2002-06-12	merged tcl-0-0-branch	Keith Whitwell
2002-04-09	Merged drmcommand-0-0-1	Jens Owen
2002-02-14	First pass of mesa-4-0 branch merge into trunk.	David Dawes
2002-01-27	First pass merge of XFree86 4.2.0 import.	David Dawes
2001-07-18	Add module version name at a lower layer of the code, allows things to be	Jeff Hartmann
2001-07-16	Added version string to the end of the kernel module name. This allows	Jeff Hartmann
2001-07-13	Fix typo in XFREE86_VERSION().	Gareth Hughes
2001-06-14	First pass of 4.1.0 merge.	David Dawes
2001-05-17	Make the SiS module work again. At least glxinfo reports it's working, yet	Alan Hourihane
2001-05-03	Make SiS driver compile with the new templated format. Not tested. minor	Alan Hourihane
2001-04-05	Merged ati-pcigart-1-0-0	Kevin E Martin
2001-03-21	Move #include <linux/config.h> inside the __linux__ #ifdef, so that it	David Dawes
2001-03-14	Merged sarea-1-0-0	Kevin E Martin
2001-03-06	Merge tdfx-3-1-0 branch.	Gareth Hughes
2001-02-28	Implement drmOpen* without /proc dependence (Fallback to /proc is included	Rik Faith
2001-02-15	Merge mga-1-0-0-branch into trunk.	Gareth Hughes
2001-01-05	Merged ati-5-0-0	Kevin E Martin
2001-01-04	Sync with Linux 2.4.0-prerelease	Rik Faith
2000-12-30	add blit ioctl, fix plnwt handling	Keith Whitwell
2000-12-02	Merged ati-4-1-1-branch into trunk.	Gareth Hughes

• [next]

generated by cgit v1.2.3 (git 2.25.1) at 2025-12-10 05:14:59 +0000

/* mga_bufs.c -- IOCTLs to manage buffers -*- linux-c -*-
 * Created: Thu Jan 6 01:47:26 2000 by jhartmann@precisioninsight.com
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * 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
 * PRECISION INSIGHT 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@precisioninsight.com>
 *	    Jeff Hartmann <jhartmann@precisioninsight.com>
 * 
 * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/mga_bufs.c,v 1.1 2000/02/11 17:26:06 dawes Exp $
 *
 */

#define __NO_VERSION__
#include "drmP.h"
#include "mga_drv.h"
#include "linux/un.h"


int mga_addbufs_agp(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_device_dma_t *dma = dev->dma;
	drm_buf_desc_t request;
	drm_buf_entry_t *entry;
	drm_buf_t *buf;
	unsigned long offset;
	unsigned long agp_offset;
	int count;
	int order;
	int size;
	int alignment;
	int page_order;
	int total;
	int byte_count;
	int i;

	if (!dma) return -EINVAL;

	copy_from_user_ret(&request,
			   (drm_buf_desc_t *)arg,
			   sizeof(request),
			   -EFAULT);

	count = request.count;
	order = drm_order(request.size);
	size	= 1 << order;
	agp_offset = request.agp_start;
	alignment  = (request.flags & _DRM_PAGE_ALIGN) ? PAGE_ALIGN(size) :size;
	page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
	total = PAGE_SIZE << page_order;
	byte_count = 0;

	DRM_DEBUG("count: %d\n", count);
	DRM_DEBUG("order: %d\n", order);
	DRM_DEBUG("size: %d\n", size);
	DRM_DEBUG("agp_offset: %ld\n", agp_offset);
	DRM_DEBUG("alignment: %d\n", alignment);
	DRM_DEBUG("page_order: %d\n", page_order);
	DRM_DEBUG("total: %d\n", total);
	DRM_DEBUG("byte_count: %d\n", byte_count);

	if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return -EINVAL;
	if (dev->queue_count) return -EBUSY; /* Not while in use */
	spin_lock(&dev->count_lock);
	if (dev->buf_use) {
		spin_unlock(&dev->count_lock);
		return -EBUSY;
	}
	atomic_inc(&dev->buf_alloc);
	spin_unlock(&dev->count_lock);
   
	down(&dev->struct_sem);
	entry = &dma->bufs[order];
	if (entry->buf_count) {
		up(&dev->struct_sem);
		atomic_dec(&dev->buf_alloc);
		return -ENOMEM; /* May only call once for each order */
	}
   
	entry->buflist = drm_alloc(count * sizeof(*entry->buflist),
				   DRM_MEM_BUFS);
	if (!entry->buflist) {
		up(&dev->struct_sem);
		atomic_dec(&dev->buf_alloc);
		return -ENOMEM;
	}
	memset(entry->buflist, 0, count * sizeof(*entry->buflist));
   
	entry->buf_size   = size;
	entry->page_order = page_order;
	offset = 0;

   
	while(entry->buf_count < count) {
		buf = &entry->buflist[entry->buf_count];
		buf->idx = dma->buf_count + entry->buf_count;
		buf->total = alignment;
		buf->order = order;
		buf->used = 0;

		DRM_DEBUG("offset : %ld\n", offset);

		buf->offset = offset; /* Hrm */
		buf->bus_address = dev->agp->base + agp_offset + offset;
		buf->address = (void *)(agp_offset + offset + dev->agp->base);
		buf->next = NULL;
		buf->waiting = 0;
		buf->pending = 0;
		init_waitqueue_head(&buf->dma_wait);
		buf->pid = 0;

		buf->dev_private = drm_alloc(sizeof(drm_mga_buf_priv_t), DRM_MEM_BUFS);
		buf->dev_priv_size = sizeof(drm_mga_buf_priv_t);

#if DRM_DMA_HISTOGRAM
		buf->time_queued = 0;
		buf->time_dispatched = 0;
		buf->time_completed = 0;
		buf->time_freed = 0;
#endif
		offset = offset + alignment;
		entry->buf_count++;
		byte_count += PAGE_SIZE << page_order;
      
		DRM_DEBUG("buffer %d @ %p\n",
			  entry->buf_count, buf->address);
	}
   
	dma->buflist = drm_realloc(dma->buflist,
				   dma->buf_count * sizeof(*dma->buflist),
				   (dma->buf_count + entry->buf_count)
				   * sizeof(*dma->buflist),
				   DRM_MEM_BUFS);
	for (i = dma->buf_count; i < dma->buf_count + entry->buf_count; i++)
		dma->buflist[i] = &entry->buflist[i - dma->buf_count];
   
	dma->buf_count  += entry->buf_count;

	DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count);

	dma->byte_count += byte_count;

	DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count);

	drm_freelist_create(&entry->freelist, entry->buf_count);
	for (i = 0; i < entry->buf_count; i++) {
		drm_freelist_put(dev, &entry->freelist, &entry->buflist[i]);
	}
   
	up(&dev->struct_sem);
   
	request.count = entry->buf_count;
	request.size  = size;
   
	copy_to_user_ret((drm_buf_desc_t *)arg,
			 &request,
			 sizeof(request),
			 -EFAULT);
   
	atomic_dec(&dev->buf_alloc);

	DRM_DEBUG("count: %d\n", count);
	DRM_DEBUG("order: %d\n", order);
	DRM_DEBUG("size: %d\n", size);
	DRM_DEBUG("agp_offset: %ld\n", agp_offset);
	DRM_DEBUG("alignment: %d\n", alignment);
	DRM_DEBUG("page_order: %d\n", page_order);
	DRM_DEBUG("total: %d\n", total);
	DRM_DEBUG("byte_count: %d\n", byte_count);

	dma->flags = _DRM_DMA_USE_AGP;

	DRM_DEBUG("dma->flags : %x\n", dma->flags);

	return 0;
}

int mga_addbufs_pci(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_device_dma_t *dma	 = dev->dma;
	drm_buf_desc_t	 request;
	int		 count;
	int		 order;
	int		 size;
	int		 total;
	int		 page_order;
	drm_buf_entry_t	 *entry;
	unsigned long	 page;
	drm_buf_t	 *buf;
	int		 alignment;
	unsigned long	 offset;
	int		 i;
	int		 byte_count;
	int		 page_count;

	if (!dma) return -EINVAL;

	copy_from_user_ret(&request,
			   (drm_buf_desc_t *)arg,
			   sizeof(request),
			   -EFAULT);

	count	   = request.count;
	order	   = drm_order(request.size);
	size	   = 1 << order;
	
	DRM_DEBUG("count = %d, size = %d (%d), order = %d, queue_count = %d\n",
		  request.count, request.size, size, order, dev->queue_count);

	if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return -EINVAL;
	if (dev->queue_count) return -EBUSY; /* Not while in use */

	alignment  = (request.flags & _DRM_PAGE_ALIGN) ? PAGE_ALIGN(size) :size;
	page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
	total	   = PAGE_SIZE << page_order;

	spin_lock(&dev->count_lock);
	if (dev->buf_use) {
		spin_unlock(&dev->count_lock);
		return -EBUSY;
	}
	atomic_inc(&dev->buf_alloc);
	spin_unlock(&dev->count_lock);
	
	down(&dev->struct_sem);
	entry = &dma->bufs[order];
	if (entry->buf_count) {
		up(&dev->struct_sem);
		atomic_dec(&dev->buf_alloc);
		return -ENOMEM;	/* May only call once for each order */
	}
	
	entry->buflist = drm_alloc(count * sizeof(*entry->buflist),
				   DRM_MEM_BUFS);
	if (!entry->buflist) {
		up(&dev->struct_sem);
		atomic_dec(&dev->buf_alloc);
		return -ENOMEM;
	}
	memset(entry->buflist, 0, count * sizeof(*entry->buflist));

	entry->seglist = drm_alloc(count * sizeof(*entry->seglist),
				   DRM_MEM_SEGS);
	if (!entry->seglist) {
		drm_free(entry->buflist,
			 count * sizeof(*entry->buflist),
			 DRM_MEM_BUFS);
		up(&dev->struct_sem);
		atomic_dec(&dev->buf_alloc);
		return -ENOMEM;
	}
	memset(entry->seglist, 0, count * sizeof(*entry->seglist));

	dma->pagelist = drm_realloc(dma->pagelist,
				    dma->page_count * sizeof(*dma->pagelist),
				    (dma->page_count + (count << page_order))
				    * sizeof(*dma->pagelist),
				    DRM_MEM_PAGES);
	DRM_DEBUG("pagelist: %d entries\n",
		  dma->page_count + (count << page_order));


	entry->buf_size	  = size;
	entry->page_order = page_order;
	byte_count	  = 0;
	page_count	  = 0;
	while (entry->buf_count < count) {
		if (!(page = drm_alloc_pages(page_order, DRM_MEM_DMA))) break;
		entry->seglist[entry->seg_count++] = page;
		for (i = 0; i < (1 << page_order); i++) {
			DRM_DEBUG("page %d @ 0x%08lx\n",
				  dma->page_count + page_count,
				  page + PAGE_SIZE * i);
			dma->pagelist[dma->page_count + page_count++]
				= page + PAGE_SIZE * i;
		}
		for (offset = 0;
		     offset + size <= total && entry->buf_count < count;
		     offset += alignment, ++entry->buf_count) {
			buf	     = &entry->buflist[entry->buf_count];
			buf->idx     = dma->buf_count + entry->buf_count;
			buf->total   = alignment;
			buf->order   = order;
			buf->used    = 0;
			buf->offset  = (dma->byte_count + byte_count + offset);
			buf->address = (void *)(page + offset);
			buf->next    = NULL;
			buf->waiting = 0;
			buf->pending = 0;
			init_waitqueue_head(&buf->dma_wait);
			buf->pid     = 0;
#if DRM_DMA_HISTOGRAM
			buf->time_queued     = 0;
			buf->time_dispatched = 0;
			buf->time_completed  = 0;
			buf->time_freed	     = 0;
#endif
			DRM_DEBUG("buffer %d @ %p\n",
				  entry->buf_count, buf->address);
		}
		byte_count += PAGE_SIZE << page_order;
	}

	dma->buflist = drm_realloc(dma->buflist,
				   dma->buf_count * sizeof(*dma->buflist),
				   (dma->buf_count + entry->buf_count)
				   * sizeof(*dma->buflist),
				   DRM_MEM_BUFS);
	for (i = dma->buf_count; i < dma->buf_count + entry->buf_count; i++)
		dma->buflist[i] = &entry->buflist[i - dma->buf_count];

	dma->buf_count	+= entry->buf_count;
	dma->seg_count	+= entry->seg_count;
	dma->page_count += entry->seg_count << page_order;
	dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
	
	drm_freelist_create(&entry->freelist, entry->buf_count);
	for (i = 0; i < entry->buf_count; i++) {
		drm_freelist_put(dev, &entry->freelist, &entry->buflist[i]);
	}
	
	up(&dev->struct_sem);

	request.count = entry->buf_count;
	request.size  = size;

	copy_to_user_ret((drm_buf_desc_t *)arg,
			 &request,
			 sizeof(request),
			 -EFAULT);
	
	atomic_dec(&dev->buf_alloc);
	return 0;
}

int mga_addbufs(struct inode *inode, struct file *filp, unsigned int cmd,
		unsigned long arg)
{
	drm_buf_desc_t	 request;

	copy_from_user_ret(&request,
			   (drm_buf_desc_t *)arg,
			   sizeof(request),
			   -EFAULT);

	if(request.flags & _DRM_AGP_BUFFER)
		return mga_addbufs_agp(inode, filp, cmd, arg);
	else
		return mga_addbufs_pci(inode, filp, cmd, arg);
}

int mga_infobufs(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_device_dma_t *dma	 = dev->dma;
	drm_buf_info_t	 request;
	int		 i;
	int		 count;

	if (!dma) return -EINVAL;

	spin_lock(&dev->count_lock);
	if (atomic_read(&dev->buf_alloc)) {
		spin_unlock(&dev->count_lock);
		return -EBUSY;
	}
	++dev->buf_use;		/* Can't allocate more after this call */
	spin_unlock(&dev->count_lock);

	copy_from_user_ret(&request,
			   (drm_buf_info_t *)arg,
			   sizeof(request),
			   -EFAULT);

	for (i = 0, count = 0; i < DRM_MAX_ORDER+1; i++) {
		if (dma->bufs[i].buf_count) ++count;
	}
	
	DRM_DEBUG("count = %d\n", count);
	
	if (request.count >= count) {
		for (i = 0, count = 0; i < DRM_MAX_ORDER+1; i++) {
			if (dma->bufs[i].buf_count) {
				copy_to_user_ret(&request.list[count].count,
						 &dma->bufs[i].buf_count,
						 sizeof(dma->bufs[0]
							.buf_count),
						 -EFAULT);
				copy_to_user_ret(&request.list[count].size,
						 &dma->bufs[i].buf_size,
						 sizeof(dma->bufs[0].buf_size),
						 -EFAULT);
				copy_to_user_ret(&request.list[count].low_mark,
						 &dma->bufs[i]
						 .freelist.low_mark,
						 sizeof(dma->bufs[0]
							.freelist.low_mark),
						 -EFAULT);
				copy_to_user_ret(&request.list[count]
						 .high_mark,
						 &dma->bufs[i]
						 .freelist.high_mark,
						 sizeof(dma->bufs[0]
							.freelist.high_mark),
						 -EFAULT);
				DRM_DEBUG("%d %d %d %d %d\n",
					  i,
					  dma->bufs[i].buf_count,
					  dma->bufs[i].buf_size,
					  dma->bufs[i].freelist.low_mark,
					  dma->bufs[i].freelist.high_mark);
				++count;
			}
		}
	}
	request.count = count;

	copy_to_user_ret((drm_buf_info_t *)arg,
			 &request,
			 sizeof(request),
			 -EFAULT);
	
	return 0;
}

int mga_markbufs(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_device_dma_t *dma	 = dev->dma;
	drm_buf_desc_t	 request;
	int		 order;
	drm_buf_entry_t	 *entry;

	if (!dma) return -EINVAL;

	copy_from_user_ret(&request,
			   (drm_buf_desc_t *)arg,
			   sizeof(request),
			   -EFAULT);

	DRM_DEBUG("%d, %d, %d\n",
		  request.size, request.low_mark, request.high_mark);
	order = drm_order(request.size);
	if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return -EINVAL;
	entry = &dma->bufs[order];

	if (request.low_mark < 0 || request.low_mark > entry->buf_count)
		return -EINVAL;