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

Age	Commit message (Expand)	Author
2004-07-15	sparse cleanups from kernel: Al Viro	Dave Airlie
2004-07-14	Fix reference counting for stub for new Linux PCI probe	Dave Airlie
2004-07-14	allow O= usage for Linux 2.6 kernel building in another directory	Dave Airlie
2004-07-11	split out backwards compat into a separate file makes it easier for merging	Dave Airlie
2004-07-11	fix issue in 2.4 kernels with returning NULL from this function	Dave Airlie
2004-07-08	Add two items to Makefile clean XFree86 bug: Reported by: Submitted by:	Jon Smirl
2004-07-07	Make drm/libdrm/xf86drm.c match	Jon Smirl
2004-07-07	Add xf86drm.h back to drm/libdrm until it's true home can be found.	Jon Smirl
2004-07-06	Fix module loading on alpha by not referencing MTRR symbols on	Eric Anholt
2004-07-06	MFC as of 20040705: dev_t -> struct cdev * change.	Eric Anholt
2004-07-05	align with kernel	Dave Airlie
2004-07-05	fixes from kernel for 0 vs NULL - mika	Dave Airlie
2004-07-05	whitespace align with kernel	Dave Airlie
2004-06-21	fix bug with pci_disable_device in the wrong place (Paul Mackerras) remove	Dave Airlie
2004-06-12	dirty hack to make mach64 work, (don't worry I'll get around to fixing it	Dave Airlie
2004-06-10	A few changes for recent redhat.	Keith Whitwell
2004-06-10	i915 drm module	Keith Whitwell
2004-06-10	i915.o drm driver	Keith Whitwell
2004-06-10	gamma_dma_priority and gamma_dma_send_buffers both deref d->send_indices	Dave Airlie
2004-06-07	The dev->devname being passed to request_irq in drm_irq.h is null. With the	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
2004-05-30	2.4 compat	Dave Airlie
2004-05-30	fixes from kernel: Make users of page->count use the provided macros	Dave Airlie
2004-05-18	fix whitespace issue in previous patch	Roland Scheidegger
2004-05-18	add R200_EMIT_RB3D_BLENDCOLOR state packet to support GL_EXT_blend_color,	Roland Scheidegger
2004-05-18	another 2.4 fix	Dave Airlie
2004-05-18	2.4 compat fix	Dave Airlie
2004-05-14	Add PCI id entry for VIA CN400 (UnichromePro) chip. XFree86 bug: Reported	Erdi Chen
2004-05-11	Merge from FreeBSD-current. Mostly 64-bit cleanliness fixes, but a few	Eric Anholt
2004-05-11	Add missing DRM_ERR()s.	Eric Anholt
2004-05-10	do some real testing and fix the DRM initialising and unloading	Dave Airlie
2004-05-09	Add mach64 DRM module for BSD (untested, but compiles).	Eric Anholt
2004-05-09	Add .cvsignore files.	Eric Anholt
2004-05-09	Warning fixes.	Eric Anholt
2004-05-09	- Link in shared files as necessary and clean them up.	Eric Anholt
2004-05-09	Catch up with sis's DRM tag change.	Eric Anholt
2004-05-09	Remove after repocopy to Makefile, now that we don't have to worry about	Eric Anholt
2004-05-09	No /bin/bash on BSD.	Eric Anholt
2004-05-09	drm_hw_lock_t is now defined in drm.h, remove from here.	Eric Anholt
2004-05-09	Commit sysfs and drm PCI changes for 2.6 kernel	Dave Airlie
2004-05-09	make drm pciids	Dave Airlie
2004-05-03	use drm.. not dri for class...	Dave Airlie
2004-05-02	fix 2.4 build	Dave Airlie
2004-05-02	better device class support from Jon Smirls patches..	Dave Airlie
2004-04-26	add another tdfx	Dave Airlie
2004-04-22	Add __user annotations from kernel	Dave Airlie
2004-04-22	add sparc ffb files from kernel just to keep things in sync	Dave Airlie
2004-04-21	add new files to generate pci ids	Dave Airlie
2004-04-21	bug from Linux kernel list caught by checker	Dave Airlie

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generated by cgit v1.2.3 (git 2.25.1) at 2025-10-04 03:30:14 +0000

/* drm_bufs.h -- Generic buffer 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>
 *
 */

#include "dev/pci/pcireg.h"

#include "drmP.h"

/*
 * Compute order.  Can be made faster.
 */
int drm_order(unsigned long size)
{
	int order;
	unsigned long tmp;

	for ( order = 0, tmp = size ; tmp >>= 1 ; ++order );

	if ( size & ~(1 << order) )
		++order;

	return order;
}

/* Allocation of PCI memory resources (framebuffer, registers, etc.) for
 * drm_get_resource_*.  Note that they are not RF_ACTIVE, so there's no virtual
 * address for accessing them.  Cleaned up at unload.
 */
static int drm_alloc_resource(drm_device_t *dev, int resource)
{
	if (resource >= DRM_MAX_PCI_RESOURCE) {
		DRM_ERROR("Resource %d too large\n", resource);
		return 1;
	}

	DRM_UNLOCK();
	if (dev->pcir[resource] != NULL) {
		DRM_LOCK();
		return 0;
	}

	dev->pcirid[resource] = PCIR_BAR(resource);
	dev->pcir[resource] = bus_alloc_resource_any(dev->device,
	    SYS_RES_MEMORY, &dev->pcirid[resource], RF_SHAREABLE);
	DRM_LOCK();

	if (dev->pcir[resource] == NULL) {
		DRM_ERROR("Couldn't find resource 0x%x\n", resource);
		return 1;
	}

	return 0;
}

unsigned long drm_get_resource_start(drm_device_t *dev, unsigned int resource)
{
	if (drm_alloc_resource(dev, resource) != 0)
		return 0;

	return rman_get_start(dev->pcir[resource]);
}

unsigned long drm_get_resource_len(drm_device_t *dev, unsigned int resource)
{
	if (drm_alloc_resource(dev, resource) != 0)
		return 0;

	return rman_get_size(dev->pcir[resource]);
}

int drm_addmap(drm_device_t * dev, unsigned long offset, unsigned long size,
    drm_map_type_t type, drm_map_flags_t flags, drm_local_map_t **map_ptr)
{
	drm_local_map_t *map;
	int align;
	/*drm_agp_mem_t *entry;
	int valid;*/

	/* Only allow shared memory to be removable since we only keep enough
	 * book keeping information about shared memory to allow for removal
	 * when processes fork.
	 */
	if ((flags & _DRM_REMOVABLE) && type != _DRM_SHM) {
		DRM_ERROR("Requested removable map for non-DRM_SHM\n");
		return EINVAL;
	}
	if ((offset & PAGE_MASK) || (size & PAGE_MASK)) {
		DRM_ERROR("offset/size not page aligned: 0x%lx/0x%lx\n",
		    offset, size);
		return EINVAL;
	}
	if (offset + size < offset) {
		DRM_ERROR("offset and size wrap around: 0x%lx/0x%lx\n",
		    offset, size);
		return EINVAL;
	}

	DRM_DEBUG("offset = 0x%08lx, size = 0x%08lx, type = %d\n", offset,
	    size, type);

	/* Check if this is just another version of a kernel-allocated map, and
	 * just hand that back if so.
	 */
	if (type == _DRM_REGISTERS || type == _DRM_FRAME_BUFFER ||
	    type == _DRM_SHM) {
		TAILQ_FOREACH(map, &dev->maplist, link) {
			if (map->type == type && (map->offset == offset ||
			    (map->type == _DRM_SHM &&
			    map->flags == _DRM_CONTAINS_LOCK))) {
				map->size = size;
				DRM_DEBUG("Found kernel map %d\n", type);
				goto done;
			}
		}
	}
	DRM_UNLOCK();

	/* Allocate a new map structure, fill it in, and do any type-specific
	 * initialization necessary.
	 */
	map = malloc(sizeof(*map), M_DRM, M_ZERO | M_NOWAIT);
	if ( !map )
		return DRM_ERR(ENOMEM);

	map->offset = offset;
	map->size = size;
	map->type = type;
	map->flags = flags;

	switch ( map->type ) {
	case _DRM_REGISTERS:
		map->handle = drm_ioremap(dev, map);
		if (!(map->flags & _DRM_WRITE_COMBINING))
			break;
		/* FALLTHROUGH */
	case _DRM_FRAME_BUFFER:
		if (drm_mtrr_add(map->offset, map->size, DRM_MTRR_WC) == 0)
			map->mtrr = 1;
		break;
	case _DRM_SHM:
		map->handle = malloc(map->size, M_DRM, M_NOWAIT);
		DRM_DEBUG( "%lu %d %p\n",
			   map->size, drm_order(map->size), map->handle );
		if ( !map->handle ) {
			free(map, M_DRM);
			return DRM_ERR(ENOMEM);
		}
		map->offset = (unsigned long)map->handle;
		if ( map->flags & _DRM_CONTAINS_LOCK ) {
			/* Prevent a 2nd X Server from creating a 2nd lock */
			DRM_LOCK();
			if (dev->lock.hw_lock != NULL) {
				DRM_UNLOCK();
				free(map->handle, M_DRM);
				free(map, M_DRM);
				return DRM_ERR(EBUSY);
			}
			dev->lock.hw_lock = map->handle; /* Pointer to lock */
			DRM_UNLOCK();
		}
		break;
	case _DRM_AGP:
		/*valid = 0;*/
		map->offset += dev->agp->base;
		map->mtrr   = dev->agp->mtrr; /* for getmap */
		/*for (entry = dev->agp->memory; entry; entry = entry->next) {
			if ((map->offset >= entry->bound) &&
			    (map->offset + map->size <=
			    entry->bound + entry->pages * PAGE_SIZE)) {
				valid = 1;
				break;
			}
		}
		if (!valid) {
			free(map, M_DRM);
			return DRM_ERR(EACCES);
		}*/
		break;
	case _DRM_SCATTER_GATHER:
		if (!dev->sg) {
			free(map, M_DRM);
			return DRM_ERR(EINVAL);
		}
		map->offset = map->offset + dev->sg->handle;
		break;
	case _DRM_CONSISTENT:
		/* Unfortunately, we don't get any alignment specification from
		 * the caller, so we have to guess.  drm_pci_alloc requires
		 * a power-of-two alignment, so try to align the bus address of
		 * the map to it size if possible, otherwise just assume
		 * PAGE_SIZE alignment.
		 */
		align = map->size;
		if ((align & (align - 1)) != 0)
			align = PAGE_SIZE;
		map->dmah = drm_pci_alloc(dev, map->size, align, 0xfffffffful);
		if (map->dmah == NULL) {
			free(map, M_DRM);
			return DRM_ERR(ENOMEM);
		}
		map->handle = map->dmah->vaddr;
		map->offset = map->dmah->busaddr;
		break;
	default:
		DRM_ERROR("Bad map type %d\n", map->type);
		free(map, M_DRM);
		return DRM_ERR(EINVAL);
	}

	DRM_LOCK();
	TAILQ_INSERT_TAIL(&dev->maplist, map, link);

done:
	/* Jumped to, with lock held, when a kernel map is found. */

	DRM_DEBUG("Added map %d 0x%lx/0x%lx\n", map->type, map->offset,
	    map->size);

	*map_ptr = map;

	return 0;
}

int drm_addmap_ioctl(DRM_IOCTL_ARGS)
{
	drm_map_t request;
	drm_local_map_t *map;
	int err;
	DRM_DEVICE;

	if (!(dev->flags & (FREAD|FWRITE)))
		return DRM_ERR(EACCES); /* Require read/write */

	DRM_COPY_FROM_USER_IOCTL(request, (drm_map_t *)data, sizeof(drm_map_t));

	if (!DRM_SUSER(p) && request.type != _DRM_AGP)
		return DRM_ERR(EACCES);

	DRM_LOCK();
	err = drm_addmap(dev, request.offset, request.size, request.type,
	    request.flags, &map);
	DRM_UNLOCK();
	if (err != 0)
		return err;

	request.offset = map->offset;
	request.size = map->size;
	request.type = map->type;
	request.flags = map->flags;
	request.mtrr   = map->mtrr;
	request.handle = map->handle;

	if (request.type != _DRM_SHM) {
		request.handle = (void *)request.offset;
	}
	DRM_COPY_TO_USER_IOCTL((drm_map_t *)data, request, sizeof(drm_map_t));

	return 0;
}

void drm_rmmap(drm_device_t *dev, drm_local_map_t *map)
{
	DRM_SPINLOCK_ASSERT(&dev->dev_lock);

	TAILQ_REMOVE(&dev->maplist, map, link);

	switch (map->type) {
	case _DRM_REGISTERS:
		if (map->bsr == NULL)
			drm_ioremapfree(map);
		/* FALLTHROUGH */
	case _DRM_FRAME_BUFFER:
		if (map->mtrr) {
			int __unused retcode;
			
			retcode = drm_mtrr_del(0, map->offset, map->size,
			    DRM_MTRR_WC);
			DRM_DEBUG("mtrr_del = %d\n", retcode);
		}
		break;
	case _DRM_SHM:
		free(map->handle, M_DRM);
		break;
	case _DRM_AGP:
	case _DRM_SCATTER_GATHER:
		break;
	case _DRM_CONSISTENT:
		drm_pci_free(dev, map->dmah);
		break;
	}

	if (map->bsr != NULL) {
		bus_release_resource(dev->device, SYS_RES_MEMORY, map->rid,
		    map->bsr);
	}

	free(map, M_DRM);
}

/* Remove a map private from list and deallocate resources if the mapping
 * isn't in use.
 */

int drm_rmmap_ioctl(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_local_map_t *map;
	drm_map_t request;

	DRM_COPY_FROM_USER_IOCTL( request, (drm_map_t *)data, sizeof(request) );

	DRM_LOCK();
	TAILQ_FOREACH(map, &dev->maplist, link) {
		if (map->handle == request.handle &&
		    map->flags & _DRM_REMOVABLE)
			break;
	}

	/* No match found. */
	if (map == NULL) {
		DRM_UNLOCK();
		return DRM_ERR(EINVAL);
	}

	drm_rmmap(dev, map);

	DRM_UNLOCK();

	return 0;
}


static void drm_cleanup_buf_error(drm_device_t *dev, drm_buf_entry_t *entry)
{
	int i;

	if (entry->seg_count) {
		for (i = 0; i < entry->seg_count; i++) {
			drm_pci_free(dev, entry->seglist[i]);
		}
		free(entry->seglist, M_DRM);

		entry->seg_count = 0;
	}

   	if (entry->buf_count) {
	   	for (i = 0; i < entry->buf_count; i++) {
			free(entry->buflist[i].dev_private, M_DRM);
		}
		free(entry->buflist, M_DRM);

		entry->buf_count = 0;
	}
}

static int drm_do_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request)
{
	drm_device_dma_t *dma = dev->dma;
	drm_buf_entry_t *entry;
	/*drm_agp_mem_t *agp_entry;
	int valid*/
	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;
	drm_buf_t **temp_buflist;

	count = request->count;
	order = drm_order(request->size);
	size = 1 << order;

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

	byte_count = 0;
	agp_offset = dev->agp->base + request->agp_start;

	DRM_DEBUG( "count:      %d\n",  count );
	DRM_DEBUG( "order:      %d\n",  order );
	DRM_DEBUG( "size:       %d\n",  size );
	DRM_DEBUG( "agp_offset: 0x%lx\n", agp_offset );
	DRM_DEBUG( "alignment:  %d\n",  alignment );
	DRM_DEBUG( "page_order: %d\n",  page_order );
	DRM_DEBUG( "total:      %d\n",  total );

	/* Make sure buffers are located in AGP memory that we own */
	/* Breaks MGA due to drm_alloc_agp not setting up entries for the
	 * memory.  Safe to ignore for now because these ioctls are still
	 * root-only.
	 */
	/*valid = 0;
	for (agp_entry = dev->agp->memory; agp_entry;
	    agp_entry = agp_entry->next) {
		if ((agp_offset >= agp_entry->bound) &&
		    (agp_offset + total * count <=
		    agp_entry->bound + agp_entry->pages * PAGE_SIZE)) {
			valid = 1;
			break;
		}
	}
	if (!valid) {
		DRM_DEBUG("zone invalid\n");
		return DRM_ERR(EINVAL);
	}*/

	entry = &dma->bufs[order];

	entry->buflist = malloc(count * sizeof(*entry->buflist), M_DRM,
	    M_NOWAIT | M_ZERO);
	if ( !entry->buflist ) {
		return DRM_ERR(ENOMEM);
	}

	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;

		buf->offset  = (dma->byte_count + offset);
		buf->bus_address = agp_offset + offset;
		buf->address = (void *)(agp_offset + offset);
		buf->next    = NULL;
		buf->pending = 0;
		buf->filp    = NULL;

		buf->dev_priv_size = dev->driver.buf_priv_size;
		buf->dev_private = malloc(buf->dev_priv_size, M_DRM,
		    M_NOWAIT | M_ZERO);
		if (buf->dev_private == NULL) {
			/* Set count correctly so we free the proper amount. */
			entry->buf_count = count;
			drm_cleanup_buf_error(dev, entry);
			return DRM_ERR(ENOMEM);
		}

		offset += alignment;
		entry->buf_count++;
		byte_count += PAGE_SIZE << page_order;
	}

	DRM_DEBUG( "byte_count: %d\n", byte_count );

	temp_buflist = realloc(dma->buflist,
	    (dma->buf_count + entry->buf_count) * sizeof(*dma->buflist), M_DRM,
	    M_NOWAIT);
	if (temp_buflist == NULL) {
		/* Free the entry because it isn't valid */
		drm_cleanup_buf_error(dev, entry);
		return DRM_ERR(ENOMEM);
	}
	dma->buflist = temp_buflist;

	for ( i = 0 ; i < entry->buf_count ; i++ ) {
		dma->buflist[i + dma->buf_count] = &entry->buflist[i];
	}

	dma->buf_count += entry->buf_count;
	dma->byte_count += byte_count;

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

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

	dma->flags = _DRM_DMA_USE_AGP;

	return 0;
}

static int drm_do_addbufs_pci(drm_device_t *dev, drm_buf_desc_t *request)
{
	drm_device_dma_t *dma = dev->dma;
	int count;
	int order;
	int size;
	int total;