},
};
+struct intel_region_reserve {
+ struct list_head link;
+ void *node;
+};
+
struct intel_memory_region *
intel_memory_region_lookup(struct drm_i915_private *i915,
u16 class, u16 instance)
return NULL;
}
-static u64
-intel_memory_region_free_pages(struct intel_memory_region *mem,
- struct list_head *blocks)
+/**
+ * intel_memory_region_unreserve - Unreserve all previously reserved
+ * ranges
+ * @mem: The region containing the reserved ranges.
+ */
+void intel_memory_region_unreserve(struct intel_memory_region *mem)
{
- struct i915_buddy_block *block, *on;
- u64 size = 0;
+ struct intel_region_reserve *reserve, *next;
- list_for_each_entry_safe(block, on, blocks, link) {
- size += i915_buddy_block_size(&mem->mm, block);
- i915_buddy_free(&mem->mm, block);
- }
- INIT_LIST_HEAD(blocks);
+ if (!mem->priv_ops || !mem->priv_ops->free)
+ return;
- return size;
-}
-
-void
-__intel_memory_region_put_pages_buddy(struct intel_memory_region *mem,
- struct list_head *blocks)
-{
mutex_lock(&mem->mm_lock);
- mem->avail += intel_memory_region_free_pages(mem, blocks);
- mutex_unlock(&mem->mm_lock);
-}
-
-void
-__intel_memory_region_put_block_buddy(struct i915_buddy_block *block)
-{
- struct list_head blocks;
-
- INIT_LIST_HEAD(&blocks);
- list_add(&block->link, &blocks);
- __intel_memory_region_put_pages_buddy(block->private, &blocks);
-}
-
-int
-__intel_memory_region_get_pages_buddy(struct intel_memory_region *mem,
- resource_size_t size,
- unsigned int flags,
- struct list_head *blocks)
-{
- unsigned int min_order = 0;
- unsigned long n_pages;
-
- GEM_BUG_ON(!IS_ALIGNED(size, mem->mm.chunk_size));
- GEM_BUG_ON(!list_empty(blocks));
-
- if (flags & I915_ALLOC_MIN_PAGE_SIZE) {
- min_order = ilog2(mem->min_page_size) -
- ilog2(mem->mm.chunk_size);
- }
-
- if (flags & I915_ALLOC_CONTIGUOUS) {
- size = roundup_pow_of_two(size);
- min_order = ilog2(size) - ilog2(mem->mm.chunk_size);
+ list_for_each_entry_safe(reserve, next, &mem->reserved, link) {
+ list_del(&reserve->link);
+ mem->priv_ops->free(mem, reserve->node);
+ kfree(reserve);
}
-
- if (size > mem->mm.size)
- return -E2BIG;
-
- n_pages = size >> ilog2(mem->mm.chunk_size);
-
- mutex_lock(&mem->mm_lock);
-
- do {
- struct i915_buddy_block *block;
- unsigned int order;
-
- order = fls(n_pages) - 1;
- GEM_BUG_ON(order > mem->mm.max_order);
- GEM_BUG_ON(order < min_order);
-
- do {
- block = i915_buddy_alloc(&mem->mm, order);
- if (!IS_ERR(block))
- break;
-
- if (order-- == min_order)
- goto err_free_blocks;
- } while (1);
-
- n_pages -= BIT(order);
-
- block->private = mem;
- list_add_tail(&block->link, blocks);
-
- if (!n_pages)
- break;
- } while (1);
-
- mem->avail -= size;
mutex_unlock(&mem->mm_lock);
- return 0;
-
-err_free_blocks:
- intel_memory_region_free_pages(mem, blocks);
- mutex_unlock(&mem->mm_lock);
- return -ENXIO;
}
-struct i915_buddy_block *
-__intel_memory_region_get_block_buddy(struct intel_memory_region *mem,
- resource_size_t size,
- unsigned int flags)
+/**
+ * intel_memory_region_reserve - Reserve a memory range
+ * @mem: The region for which we want to reserve a range.
+ * @offset: Start of the range to reserve.
+ * @size: The size of the range to reserve.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int intel_memory_region_reserve(struct intel_memory_region *mem,
+ resource_size_t offset,
+ resource_size_t size)
{
- struct i915_buddy_block *block;
- LIST_HEAD(blocks);
int ret;
+ struct intel_region_reserve *reserve;
- ret = __intel_memory_region_get_pages_buddy(mem, size, flags, &blocks);
- if (ret)
- return ERR_PTR(ret);
+ if (!mem->priv_ops || !mem->priv_ops->reserve)
+ return -EINVAL;
- block = list_first_entry(&blocks, typeof(*block), link);
- list_del_init(&block->link);
- return block;
-}
+ reserve = kzalloc(sizeof(*reserve), GFP_KERNEL);
+ if (!reserve)
+ return -ENOMEM;
-int intel_memory_region_init_buddy(struct intel_memory_region *mem)
-{
- return i915_buddy_init(&mem->mm, resource_size(&mem->region),
- PAGE_SIZE);
-}
-
-void intel_memory_region_release_buddy(struct intel_memory_region *mem)
-{
- i915_buddy_free_list(&mem->mm, &mem->reserved);
- i915_buddy_fini(&mem->mm);
-}
-
-int intel_memory_region_reserve(struct intel_memory_region *mem,
- u64 offset, u64 size)
-{
- int ret;
+ reserve->node = mem->priv_ops->reserve(mem, offset, size);
+ if (IS_ERR(reserve->node)) {
+ ret = PTR_ERR(reserve->node);
+ kfree(reserve);
+ return ret;
+ }
mutex_lock(&mem->mm_lock);
- ret = i915_buddy_alloc_range(&mem->mm, &mem->reserved, offset, size);
+ list_add_tail(&reserve->link, &mem->reserved);
mutex_unlock(&mem->mm_lock);
- return ret;
+ return 0;
}
struct intel_memory_region *
resource_size_t size,
resource_size_t min_page_size,
resource_size_t io_start,
+ u16 type,
+ u16 instance,
const struct intel_memory_region_ops *ops)
{
struct intel_memory_region *mem;
mem->ops = ops;
mem->total = size;
mem->avail = mem->total;
+ mem->type = type;
+ mem->instance = instance;
mutex_init(&mem->objects.lock);
INIT_LIST_HEAD(&mem->objects.list);
struct intel_memory_region *mem =
container_of(kref, typeof(*mem), kref);
+ intel_memory_region_unreserve(mem);
if (mem->ops->release)
mem->ops->release(mem);
instance = intel_region_map[i].instance;
switch (type) {
case INTEL_MEMORY_SYSTEM:
- mem = i915_gem_shmem_setup(i915);
+ mem = i915_gem_shmem_setup(i915, type, instance);
break;
case INTEL_MEMORY_STOLEN_LOCAL:
- mem = i915_gem_stolen_lmem_setup(i915);
+ mem = i915_gem_stolen_lmem_setup(i915, type, instance);
if (!IS_ERR(mem))
i915->mm.stolen_region = mem;
break;
case INTEL_MEMORY_STOLEN_SYSTEM:
- mem = i915_gem_stolen_smem_setup(i915);
+ mem = i915_gem_stolen_smem_setup(i915, type, instance);
if (!IS_ERR(mem))
i915->mm.stolen_region = mem;
break;
}
mem->id = i;
- mem->type = type;
- mem->instance = instance;
-
i915->mm.regions[i] = mem;
}
projects / linux-2.6-microblaze.git / blobdiff