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Commit 5f757f91 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6 

* 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/i915: Add 965GM pci id update
  drm: just use io_remap_pfn_range on all archs..
  drm: fix DRM_CONSISTENT mapping
  drm: fix up mmap locking in preparation for ttm changes
  drm: fix driver deadlock with AIGLX and reclaim_buffers_locked
  drm: fix warning in drm_fops.c
  drm: allow for more generic drm ioctls
  drm: fix alpha domain handling
  via: fix CX700 pci id
  drm: make drm_io_prot static.
  drm: remove via_mm.h
  drm: add missing NULL assignment
  drm/radeon: Fix u32 overflows when determining AGP base address in card space.
  drm: port over use_vmalloc code from git hashtab
  drm: fix crash with fops lock and fixup sarea/page size locking
  drm: bring bufs code from git tree.
  drm: move protection stuff into separate function
  drm: Use ARRAY_SIZE macro when appropriate
  drm: update README.drm (bugzilla #7933)
  drm: remove unused exports
parents 9fa0853a ce7dd063

drivers/char/drm/README.drm

+7 −9
Original line number Diff line number Diff line 
************************************************************

* For the very latest on DRI development, please see:      *

*     http://dri.sourceforge.net/                          *

*     http://dri.freedesktop.org/                          *

************************************************************



The Direct Rendering Manager (drm) is a device-independent kernel-level
@@ -26,21 +26,19 @@ ways: 




Documentation on the DRI is available from:

    http://precisioninsight.com/piinsights.html

    http://dri.freedesktop.org/wiki/Documentation

    http://sourceforge.net/project/showfiles.php?group_id=387

    http://dri.sourceforge.net/doc/



For specific information about kernel-level support, see:



    The Direct Rendering Manager, Kernel Support for the Direct Rendering

    Infrastructure

    http://precisioninsight.com/dr/drm.html

    http://dri.sourceforge.net/doc/drm_low_level.html



    Hardware Locking for the Direct Rendering Infrastructure

    http://precisioninsight.com/dr/locking.html

    http://dri.sourceforge.net/doc/hardware_locking_low_level.html



    A Security Analysis of the Direct Rendering Infrastructure

    http://precisioninsight.com/dr/security.html

    http://dri.sourceforge.net/doc/security_low_level.html

************************************************************

* For the very latest on DRI development, please see:      *

*     http://dri.sourceforge.net/                          *

************************************************************

drivers/char/drm/drm.h

+3 −1
Original line number Diff line number Diff line
@@ -654,11 +654,13 @@ typedef struct drm_set_version { 


/**

 * Device specific ioctls should only be in their respective headers

 * The device specific ioctl range is from 0x40 to 0x79.

 * The device specific ioctl range is from 0x40 to 0x99.

 * Generic IOCTLS restart at 0xA0.

 *

 * \sa drmCommandNone(), drmCommandRead(), drmCommandWrite(), and

 * drmCommandReadWrite().

 */

#define DRM_COMMAND_BASE                0x40

#define DRM_COMMAND_END			0xA0



#endif

drivers/char/drm/drmP.h

+19 −4
Original line number Diff line number Diff line
@@ -414,6 +414,10 @@ typedef struct drm_lock_data { 
	struct file *filp;		/**< File descr of lock holder (0=kernel) */

	wait_queue_head_t lock_queue;	/**< Queue of blocked processes */

	unsigned long lock_time;	/**< Time of last lock in jiffies */

	spinlock_t spinlock;

	uint32_t kernel_waiters;

	uint32_t user_waiters;

	int idle_has_lock;

} drm_lock_data_t;



/**
@@ -590,6 +594,8 @@ struct drm_driver { 
	void (*reclaim_buffers) (struct drm_device * dev, struct file * filp);

	void (*reclaim_buffers_locked) (struct drm_device *dev,

					struct file *filp);

	void (*reclaim_buffers_idlelocked) (struct drm_device *dev,

					struct file * filp);

	unsigned long (*get_map_ofs) (drm_map_t * map);

	unsigned long (*get_reg_ofs) (struct drm_device * dev);

	void (*set_version) (struct drm_device * dev, drm_set_version_t * sv);
@@ -764,7 +770,7 @@ static __inline__ int drm_core_check_feature(struct drm_device *dev, 
}



#ifdef __alpha__

#define drm_get_pci_domain(dev) dev->hose->bus->number

#define drm_get_pci_domain(dev) dev->hose->index

#else

#define drm_get_pci_domain(dev) 0

#endif
@@ -915,9 +921,18 @@ extern int drm_lock(struct inode *inode, struct file *filp, 
		    unsigned int cmd, unsigned long arg);

extern int drm_unlock(struct inode *inode, struct file *filp,

		      unsigned int cmd, unsigned long arg);

extern int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context);

extern int drm_lock_free(drm_device_t * dev,

			 __volatile__ unsigned int *lock, unsigned int context);

extern int drm_lock_take(drm_lock_data_t *lock_data, unsigned int context);

extern int drm_lock_free(drm_lock_data_t *lock_data, unsigned int context);

extern void drm_idlelock_take(drm_lock_data_t *lock_data);

extern void drm_idlelock_release(drm_lock_data_t *lock_data);



/*

 * These are exported to drivers so that they can implement fencing using

 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.

 */



extern int drm_i_have_hw_lock(struct file *filp);

extern int drm_kernel_take_hw_lock(struct file *filp);



				/* Buffer management support (drm_bufs.h) */

extern int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request);

drivers/char/drm/drm_bufs.c

+66 −9
Original line number Diff line number Diff line
@@ -57,7 +57,8 @@ static drm_map_list_t *drm_find_matching_map(drm_device_t *dev, 
	list_for_each(list, &dev->maplist->head) {

		drm_map_list_t *entry = list_entry(list, drm_map_list_t, head);

		if (entry->map && map->type == entry->map->type &&

		    entry->map->offset == map->offset) {

		    ((entry->map->offset == map->offset) ||

		     (map->type == _DRM_SHM && map->flags==_DRM_CONTAINS_LOCK))) {

			return entry;

		}

	}
@@ -180,8 +181,20 @@ static int drm_addmap_core(drm_device_t * dev, unsigned int offset, 
		if (map->type == _DRM_REGISTERS)

			map->handle = ioremap(map->offset, map->size);

		break;



	case _DRM_SHM:

		list = drm_find_matching_map(dev, map);

		if (list != NULL) {

			if(list->map->size != map->size) {

				DRM_DEBUG("Matching maps of type %d with "

					  "mismatched sizes, (%ld vs %ld)\n",

					  map->type, map->size, list->map->size);

				list->map->size = map->size;

			}



			drm_free(map, sizeof(*map), DRM_MEM_MAPS);

			*maplist = list;

			return 0;

		}

		map->handle = vmalloc_user(map->size);

		DRM_DEBUG("%lu %d %p\n",

			  map->size, drm_order(map->size), map->handle);
@@ -200,15 +213,45 @@ static int drm_addmap_core(drm_device_t * dev, unsigned int offset, 
			dev->sigdata.lock = dev->lock.hw_lock = map->handle;	/* Pointer to lock */

		}

		break;

	case _DRM_AGP:

		if (drm_core_has_AGP(dev)) {

	case _DRM_AGP: {

		drm_agp_mem_t *entry;

		int valid = 0;



		if (!drm_core_has_AGP(dev)) {

			drm_free(map, sizeof(*map), DRM_MEM_MAPS);

			return -EINVAL;

		}

#ifdef __alpha__

		map->offset += dev->hose->mem_space->start;

#endif

		/* Note: dev->agp->base may actually be 0 when the DRM

		 * is not in control of AGP space. But if user space is

		 * it should already have added the AGP base itself.

		 */

		map->offset += dev->agp->base;

		map->mtrr = dev->agp->agp_mtrr;	/* for getmap */



		/* This assumes the DRM is in total control of AGP space.

		 * It's not always the case as AGP can be in the control

		 * of user space (i.e. i810 driver). So this loop will get

		 * skipped and we double check that dev->agp->memory is

		 * actually set as well as being invalid before EPERM'ing

		 */

		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 (dev->agp->memory && !valid) {

			drm_free(map, sizeof(*map), DRM_MEM_MAPS);

			return -EPERM;

		}

		DRM_DEBUG("AGP offset = 0x%08lx, size = 0x%08lx\n", map->offset, map->size);



		break;

	}

	case _DRM_SCATTER_GATHER:

		if (!dev->sg) {

			drm_free(map, sizeof(*map), DRM_MEM_MAPS);
@@ -519,6 +562,7 @@ int drm_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;

	drm_buf_t *buf;

	unsigned long offset;

	unsigned long agp_offset;
@@ -529,7 +573,7 @@ int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request) 
	int page_order;

	int total;

	int byte_count;

	int i;

	int i, valid;

	drm_buf_t **temp_buflist;



	if (!dma)
@@ -560,6 +604,19 @@ int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request) 
	if (dev->queue_count)

		return -EBUSY;	/* Not while in use */



	/* Make sure buffers are located in AGP memory that we own */

	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 (dev->agp->memory && !valid) {

		DRM_DEBUG("zone invalid\n");

		return -EINVAL;

	}

	spin_lock(&dev->count_lock);

	if (dev->buf_use) {

		spin_unlock(&dev->count_lock);

drivers/char/drm/drm_drv.c

+6 −3
Original line number Diff line number Diff line
@@ -496,11 +496,14 @@ int drm_ioctl(struct inode *inode, struct file *filp, 
		  (long)old_encode_dev(priv->head->device),

		  priv->authenticated);



	if (nr < DRIVER_IOCTL_COUNT)

		ioctl = &drm_ioctls[nr];

	else if ((nr >= DRM_COMMAND_BASE)

	if ((nr >= DRIVER_IOCTL_COUNT) &&

	    ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))

		goto err_i1;

	if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)

		 && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))

		ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];

	else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE))

		ioctl = &drm_ioctls[nr];

	else

		goto err_i1;