Implemented a new intersect and compatible callback function
fetching start offset from drm buddy allocator.
v2: move the bits that are specific to buddy_man (Matthew)
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@xxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 39 +-----------
drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 62 +++++++++++++++++++
2 files changed, 64 insertions(+), 37 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
index 70e2ed4e99df..54eead15d74b 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -396,43 +396,8 @@ static bool i915_ttm_eviction_valuable(struct ttm_buffer_object *bo,
if (!i915_gem_object_evictable(obj))
return false;
- switch (res->mem_type) {
- case I915_PL_LMEM0: {
- struct ttm_resource_manager *man =
- ttm_manager_type(bo->bdev, res->mem_type);
- struct i915_ttm_buddy_resource *bman_res =
- to_ttm_buddy_resource(res);
- struct drm_buddy *mm = bman_res->mm;
- struct drm_buddy_block *block;
-
- if (!place->fpfn && !place->lpfn)
- return true;
-
- GEM_BUG_ON(!place->lpfn);
-
- /*
- * If we just want something mappable then we can quickly check
- * if the current victim resource is using any of the CPU
- * visible portion.
- */
- if (!place->fpfn &&
- place->lpfn == i915_ttm_buddy_man_visible_size(man))
- return bman_res->used_visible_size > 0;
-
- /* Real range allocation */
- list_for_each_entry(block, &bman_res->blocks, link) {
- unsigned long fpfn =
- drm_buddy_block_offset(block) >> PAGE_SHIFT;
- unsigned long lpfn = fpfn +
- (drm_buddy_block_size(mm, block) >> PAGE_SHIFT);
-
- if (place->fpfn < lpfn && place->lpfn > fpfn)
- return true;
- }
- return false;
- } default:
- break;
- }
+ if (res->mem_type == I915_PL_LMEM0)
+ return ttm_bo_eviction_valuable(bo, place);
return true;
}
diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
index a5109548abc0..9d2a31154d58 100644
--- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
+++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
@@ -178,6 +178,66 @@ static void i915_ttm_buddy_man_free(struct ttm_resource_manager *man,
kfree(bman_res);
}
+static bool i915_ttm_buddy_man_intersect(struct ttm_resource_manager *man,
+ struct ttm_resource *res,
+ const struct ttm_place *place,
+ size_t size)
+{
+ struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res);
+ u32 start, num_pages = PFN_UP(size);
+ struct drm_buddy_block *block;
+
+ if (!place->fpfn && !place->lpfn)
+ return true;
+
+ /*
+ * If we just want something mappable then we can quickly check
+ * if the current victim resource is using any of the CP
+ * visible portion.
+ */
+ if (!place->fpfn &&
+ place->lpfn == i915_ttm_buddy_man_visible_size(man))
+ return bman_res->used_visible_size > 0;
+
+ /* Check each drm buddy block individually */
+ list_for_each_entry(block, &bman_res->blocks, link) {
+ start = drm_buddy_block_offset(block) >> PAGE_SHIFT;
+ /* Don't evict BOs outside of the requested placement range */
+ if (place->fpfn >= (start + num_pages) ||
+ (place->lpfn && place->lpfn <= start))
+ return false;
+ }
+
+ return true;
+}
+
+static bool i915_ttm_buddy_man_compatible(struct ttm_resource_manager *man,
+ struct ttm_resource *res,
+ const struct ttm_place *place,
+ size_t size)
+{
+ struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res);
+ u32 start, num_pages = PFN_UP(size);
+ struct drm_buddy_block *block;
+
+ if (!place->fpfn && !place->lpfn)
+ return true;
+
+ if (!place->fpfn &&
+ place->lpfn == i915_ttm_buddy_man_visible_size(man))
+ return bman_res->used_visible_size == res->num_pages;
+
+ /* Check each drm buddy block individually */
+ list_for_each_entry(block, &bman_res->blocks, link) {
+ start = drm_buddy_block_offset(block) >> PAGE_SHIFT;
+ if (start < place->fpfn ||
+ (place->lpfn && (start + num_pages) > place->lpfn))
+ return false;
+ }
+
+ return true;
+}
+
static void i915_ttm_buddy_man_debug(struct ttm_resource_manager *man,
struct drm_printer *printer)
{
@@ -205,6 +265,8 @@ static void i915_ttm_buddy_man_debug(struct ttm_resource_manager *man,
static const struct ttm_resource_manager_func i915_ttm_buddy_manager_func = {
.alloc = i915_ttm_buddy_man_alloc,
.free = i915_ttm_buddy_man_free,
+ .intersects = i915_ttm_buddy_man_intersect,
+ .compatible = i915_ttm_buddy_man_compatible,
.debug = i915_ttm_buddy_man_debug,
};
--
2.25.1
