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| author | Matthew Auld <matthew.auld@intel.com> | 2022-03-15 18:14:22 +0000 |
|---|---|---|
| committer | Matthew Auld <matthew.auld@intel.com> | 2022-03-16 17:50:34 +0000 |
| commit | 9b78b5dade2d26e2b77f1ac27044946e4e8e7247 (patch) | |
| tree | 78abda5fa4f4f321bfcc671839ddae5d4ce2c7b9 /drivers/gpu/drm/i915/gem/i915_gem_region.c | |
| parent | d511d013e2869bed51191b6f70f8073e64c600a1 (diff) | |
| download | linux-9b78b5dade2d26e2b77f1ac27044946e4e8e7247.tar.bz2 | |
drm/i915: add i915_gem_object_create_region_at()
Add a generic interface for allocating an object at some specific
offset, and convert stolen over. Later we will want to hook this up to
different backends.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220315181425.576828-4-matthew.auld@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_region.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_region.c | 47 |
1 files changed, 41 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_region.c b/drivers/gpu/drm/i915/gem/i915_gem_region.c index c9b2e8b91053..3428ddfb2fdb 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_region.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_region.c @@ -27,11 +27,12 @@ void i915_gem_object_release_memory_region(struct drm_i915_gem_object *obj) mutex_unlock(&mem->objects.lock); } -struct drm_i915_gem_object * -i915_gem_object_create_region(struct intel_memory_region *mem, - resource_size_t size, - resource_size_t page_size, - unsigned int flags) +static struct drm_i915_gem_object * +__i915_gem_object_create_region(struct intel_memory_region *mem, + resource_size_t offset, + resource_size_t size, + resource_size_t page_size, + unsigned int flags) { struct drm_i915_gem_object *obj; resource_size_t default_page_size; @@ -86,7 +87,7 @@ i915_gem_object_create_region(struct intel_memory_region *mem, if (default_page_size < mem->min_page_size) flags |= I915_BO_ALLOC_PM_EARLY; - err = mem->ops->init_object(mem, obj, size, page_size, flags); + err = mem->ops->init_object(mem, obj, offset, size, page_size, flags); if (err) goto err_object_free; @@ -98,6 +99,40 @@ err_object_free: return ERR_PTR(err); } +struct drm_i915_gem_object * +i915_gem_object_create_region(struct intel_memory_region *mem, + resource_size_t size, + resource_size_t page_size, + unsigned int flags) +{ + return __i915_gem_object_create_region(mem, I915_BO_INVALID_OFFSET, + size, page_size, flags); +} + +struct drm_i915_gem_object * +i915_gem_object_create_region_at(struct intel_memory_region *mem, + resource_size_t offset, + resource_size_t size, + unsigned int flags) +{ + GEM_BUG_ON(offset == I915_BO_INVALID_OFFSET); + + if (GEM_WARN_ON(!IS_ALIGNED(size, mem->min_page_size)) || + GEM_WARN_ON(!IS_ALIGNED(offset, mem->min_page_size))) + return ERR_PTR(-EINVAL); + + if (range_overflows(offset, size, resource_size(&mem->region))) + return ERR_PTR(-EINVAL); + + if (!(flags & I915_BO_ALLOC_GPU_ONLY) && + offset + size > mem->io_size && + !i915_ggtt_has_aperture(to_gt(mem->i915)->ggtt)) + return ERR_PTR(-ENOSPC); + + return __i915_gem_object_create_region(mem, offset, size, 0, + flags | I915_BO_ALLOC_CONTIGUOUS); +} + /** * i915_gem_process_region - Iterate over all objects of a region using ops * to process and optionally skip objects |