Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@xxxxxxxxx
Signed-off-by: Oak Zeng <oak.zeng@xxxxxxxxx>
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
---
drivers/gpu/drm/xe/xe_svm.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_svm.c b/drivers/gpu/drm/xe/xe_svm.c
index 6c690ba827e7..82cb5a260c87 100644
--- a/drivers/gpu/drm/xe/xe_svm.c
+++ b/drivers/gpu/drm/xe/xe_svm.c
@@ -9,6 +9,7 @@
#include "xe_migrate.h"
#include "xe_pt.h"
#include "xe_svm.h"
+#include "xe_ttm_vram_mgr.h"
#include "xe_vm.h"
#include "xe_vm_types.h"
@@ -421,9 +422,45 @@ static int xe_svm_copy_to_sram(struct drm_gpusvm *gpusvm, struct page **pages,
XE_SVM_COPY_TO_SRAM);
}
+static u64 block_offset_to_pfn(struct xe_mem_region *mr, u64 offset)
+{
+ return PHYS_PFN(offset + mr->hpa_base);
+}
+
+static struct drm_buddy *tile_to_buddy(struct xe_tile *tile)
+{
+ return &tile->mem.vram_mgr->mm;
+}
+
+static int xe_svm_populate_vram_pfn(struct drm_gpusvm *gpusvm,
+ void *vram_allocation,
+ unsigned long npages,
+ unsigned long *pfn)
+{
+ struct xe_bo *bo = vram_allocation;
+ struct ttm_resource *res = bo->ttm.resource;
+ struct list_head *blocks = &to_xe_ttm_vram_mgr_resource(res)->blocks;
+ struct drm_buddy_block *block;
+ int j =0;
+
+ list_for_each_entry(block, blocks, link) {
+ struct xe_mem_region *mr = block->private;
+ struct xe_tile *tile = mr_to_tile(mr);
+ struct drm_buddy *buddy = tile_to_buddy(tile);
+ u64 block_pfn = block_offset_to_pfn(mr, drm_buddy_block_offset(block));
+ int i;
+
+ for(i = 0; i < drm_buddy_block_size(buddy, block) >> PAGE_SHIFT; ++i)
+ pfn[j++] = block_pfn + i;
+ }
+
+ return 0;
+}
+
static const struct drm_gpusvm_ops gpusvm_ops = {
.range_alloc = xe_svm_range_alloc,
.range_free = xe_svm_range_free,
+ .populate_vram_pfn = xe_svm_populate_vram_pfn,
.copy_to_vram = xe_svm_copy_to_vram,
.copy_to_sram = xe_svm_copy_to_sram,
.invalidate = xe_svm_invalidate,
--
2.34.1
