diff options
Diffstat (limited to 'drivers/char/drm/i915_mem.c')
-rw-r--r-- | drivers/char/drm/i915_mem.c | 125 |
1 files changed, 57 insertions, 68 deletions
diff --git a/drivers/char/drm/i915_mem.c b/drivers/char/drm/i915_mem.c index 50b4bacef0e..56fb9b30a5d 100644 --- a/drivers/char/drm/i915_mem.c +++ b/drivers/char/drm/i915_mem.c @@ -89,7 +89,7 @@ static void mark_block(struct drm_device * dev, struct mem_block *p, int in_use) */ static struct mem_block *split_block(struct mem_block *p, int start, int size, - DRMFILE filp) + struct drm_file *file_priv) { /* Maybe cut off the start of an existing block */ if (start > p->start) { @@ -99,7 +99,7 @@ static struct mem_block *split_block(struct mem_block *p, int start, int size, goto out; newblock->start = start; newblock->size = p->size - (start - p->start); - newblock->filp = NULL; + newblock->file_priv = NULL; newblock->next = p->next; newblock->prev = p; p->next->prev = newblock; @@ -116,7 +116,7 @@ static struct mem_block *split_block(struct mem_block *p, int start, int size, goto out; newblock->start = start + size; newblock->size = p->size - size; - newblock->filp = NULL; + newblock->file_priv = NULL; newblock->next = p->next; newblock->prev = p; p->next->prev = newblock; @@ -126,20 +126,20 @@ static struct mem_block *split_block(struct mem_block *p, int start, int size, out: /* Our block is in the middle */ - p->filp = filp; + p->file_priv = file_priv; return p; } static struct mem_block *alloc_block(struct mem_block *heap, int size, - int align2, DRMFILE filp) + int align2, struct drm_file *file_priv) { struct mem_block *p; int mask = (1 << align2) - 1; for (p = heap->next; p != heap; p = p->next) { int start = (p->start + mask) & ~mask; - if (p->filp == NULL && start + size <= p->start + p->size) - return split_block(p, start, size, filp); + if (p->file_priv == NULL && start + size <= p->start + p->size) + return split_block(p, start, size, file_priv); } return NULL; @@ -158,12 +158,12 @@ static struct mem_block *find_block(struct mem_block *heap, int start) static void free_block(struct mem_block *p) { - p->filp = NULL; + p->file_priv = NULL; - /* Assumes a single contiguous range. Needs a special filp in + /* Assumes a single contiguous range. Needs a special file_priv in * 'heap' to stop it being subsumed. */ - if (p->next->filp == NULL) { + if (p->next->file_priv == NULL) { struct mem_block *q = p->next; p->size += q->size; p->next = q->next; @@ -171,7 +171,7 @@ static void free_block(struct mem_block *p) drm_free(q, sizeof(*q), DRM_MEM_BUFLISTS); } - if (p->prev->filp == NULL) { + if (p->prev->file_priv == NULL) { struct mem_block *q = p->prev; q->size += p->size; q->next = p->next; @@ -197,18 +197,19 @@ static int init_heap(struct mem_block **heap, int start, int size) blocks->start = start; blocks->size = size; - blocks->filp = NULL; + blocks->file_priv = NULL; blocks->next = blocks->prev = *heap; memset(*heap, 0, sizeof(**heap)); - (*heap)->filp = (DRMFILE) - 1; + (*heap)->file_priv = (struct drm_file *) - 1; (*heap)->next = (*heap)->prev = blocks; return 0; } /* Free all blocks associated with the releasing file. */ -void i915_mem_release(struct drm_device * dev, DRMFILE filp, struct mem_block *heap) +void i915_mem_release(struct drm_device * dev, struct drm_file *file_priv, + struct mem_block *heap) { struct mem_block *p; @@ -216,17 +217,17 @@ void i915_mem_release(struct drm_device * dev, DRMFILE filp, struct mem_block *h return; for (p = heap->next; p != heap; p = p->next) { - if (p->filp == filp) { - p->filp = NULL; + if (p->file_priv == file_priv) { + p->file_priv = NULL; mark_block(dev, p, 0); } } - /* Assumes a single contiguous range. Needs a special filp in + /* Assumes a single contiguous range. Needs a special file_priv in * 'heap' to stop it being subsumed. */ for (p = heap->next; p != heap; p = p->next) { - while (p->filp == NULL && p->next->filp == NULL) { + while (p->file_priv == NULL && p->next->file_priv == NULL) { struct mem_block *q = p->next; p->size += q->size; p->next = q->next; @@ -267,129 +268,117 @@ static struct mem_block **get_heap(drm_i915_private_t * dev_priv, int region) /* IOCTL HANDLERS */ -int i915_mem_alloc(DRM_IOCTL_ARGS) +int i915_mem_alloc(struct drm_device *dev, void *data, + struct drm_file *file_priv) { - DRM_DEVICE; drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_mem_alloc_t alloc; + drm_i915_mem_alloc_t *alloc = data; struct mem_block *block, **heap; if (!dev_priv) { DRM_ERROR("%s called with no initialization\n", __FUNCTION__); - return DRM_ERR(EINVAL); + return -EINVAL; } - DRM_COPY_FROM_USER_IOCTL(alloc, (drm_i915_mem_alloc_t __user *) data, - sizeof(alloc)); - - heap = get_heap(dev_priv, alloc.region); + heap = get_heap(dev_priv, alloc->region); if (!heap || !*heap) - return DRM_ERR(EFAULT); + return -EFAULT; /* Make things easier on ourselves: all allocations at least * 4k aligned. */ - if (alloc.alignment < 12) - alloc.alignment = 12; + if (alloc->alignment < 12) + alloc->alignment = 12; - block = alloc_block(*heap, alloc.size, alloc.alignment, filp); + block = alloc_block(*heap, alloc->size, alloc->alignment, file_priv); if (!block) - return DRM_ERR(ENOMEM); + return -ENOMEM; mark_block(dev, block, 1); - if (DRM_COPY_TO_USER(alloc.region_offset, &block->start, sizeof(int))) { + if (DRM_COPY_TO_USER(alloc->region_offset, &block->start, + sizeof(int))) { DRM_ERROR("copy_to_user\n"); - return DRM_ERR(EFAULT); + return -EFAULT; } return 0; } -int i915_mem_free(DRM_IOCTL_ARGS) +int i915_mem_free(struct drm_device *dev, void *data, + struct drm_file *file_priv) { - DRM_DEVICE; drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_mem_free_t memfree; + drm_i915_mem_free_t *memfree = data; struct mem_block *block, **heap; if (!dev_priv) { DRM_ERROR("%s called with no initialization\n", __FUNCTION__); - return DRM_ERR(EINVAL); + return -EINVAL; } - DRM_COPY_FROM_USER_IOCTL(memfree, (drm_i915_mem_free_t __user *) data, - sizeof(memfree)); - - heap = get_heap(dev_priv, memfree.region); + heap = get_heap(dev_priv, memfree->region); if (!heap || !*heap) - return DRM_ERR(EFAULT); + return -EFAULT; - block = find_block(*heap, memfree.region_offset); + block = find_block(*heap, memfree->region_offset); if (!block) - return DRM_ERR(EFAULT); + return -EFAULT; - if (block->filp != filp) - return DRM_ERR(EPERM); + if (block->file_priv != file_priv) + return -EPERM; mark_block(dev, block, 0); free_block(block); return 0; } -int i915_mem_init_heap(DRM_IOCTL_ARGS) +int i915_mem_init_heap(struct drm_device *dev, void *data, + struct drm_file *file_priv) { - DRM_DEVICE; drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_mem_init_heap_t initheap; + drm_i915_mem_init_heap_t *initheap = data; struct mem_block **heap; if (!dev_priv) { DRM_ERROR("%s called with no initialization\n", __FUNCTION__); - return DRM_ERR(EINVAL); + return -EINVAL; } - DRM_COPY_FROM_USER_IOCTL(initheap, - (drm_i915_mem_init_heap_t __user *) data, - sizeof(initheap)); - - heap = get_heap(dev_priv, initheap.region); + heap = get_heap(dev_priv, initheap->region); if (!heap) - return DRM_ERR(EFAULT); + return -EFAULT; if (*heap) { DRM_ERROR("heap already initialized?"); - return DRM_ERR(EFAULT); + return -EFAULT; } - return init_heap(heap, initheap.start, initheap.size); + return init_heap(heap, initheap->start, initheap->size); } -int i915_mem_destroy_heap( DRM_IOCTL_ARGS ) +int i915_mem_destroy_heap( struct drm_device *dev, void *data, + struct drm_file *file_priv ) { - DRM_DEVICE; drm_i915_private_t *dev_priv = dev->dev_private; - drm_i915_mem_destroy_heap_t destroyheap; + drm_i915_mem_destroy_heap_t *destroyheap = data; struct mem_block **heap; if ( !dev_priv ) { DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ ); - return DRM_ERR(EINVAL); + return -EINVAL; } - DRM_COPY_FROM_USER_IOCTL( destroyheap, (drm_i915_mem_destroy_heap_t *)data, - sizeof(destroyheap) ); - - heap = get_heap( dev_priv, destroyheap.region ); + heap = get_heap( dev_priv, destroyheap->region ); if (!heap) { DRM_ERROR("get_heap failed"); - return DRM_ERR(EFAULT); + return -EFAULT; } if (!*heap) { DRM_ERROR("heap not initialized?"); - return DRM_ERR(EFAULT); + return -EFAULT; } i915_mem_takedown( heap ); |