[PATCH v3 1/4] drm/amdgpu: Use cursor start instead of ttm resource start

[Somalapuram Amaranath <Amaranath.Somalapuram@xxxxxxx>]

cleanup PAGE_SHIFT operation and replacing
ttm_resource resource->start with cursor start
using amdgpu_res_first API.
v1 -> v2: reorder patch sequence
v2 -> v3: addressing review comment v2

Signed-off-by: Somalapuram Amaranath <Amaranath.Somalapuram@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c |  4 +++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c    | 10 +++++++---
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 25a68d8888e0..2a74039c82eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1491,9 +1491,11 @@ u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
 u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo)
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+	struct amdgpu_res_cursor cursor;
 	uint64_t offset;
 
-	offset = (bo->tbo.resource->start << PAGE_SHIFT) +
+	amdgpu_res_first(bo->tbo.resource, 0, bo->tbo.resource->size, &cursor);
+	offset = cursor.start +
 		 amdgpu_ttm_domain_start(adev, bo->tbo.resource->mem_type);
 
 	return amdgpu_gmc_sign_extend(offset);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index c5ef7f7bdc15..ffe6a1ab7f9a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -849,6 +849,7 @@ static int amdgpu_ttm_backend_bind(struct ttm_device *bdev,
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bdev);
 	struct amdgpu_ttm_tt *gtt = ttm_to_amdgpu_ttm_tt(ttm);
+	struct amdgpu_res_cursor cursor;
 	uint64_t flags;
 	int r;
 
@@ -896,7 +897,8 @@ static int amdgpu_ttm_backend_bind(struct ttm_device *bdev,
 	flags = amdgpu_ttm_tt_pte_flags(adev, ttm, bo_mem);
 
 	/* bind pages into GART page tables */
-	gtt->offset = (u64)bo_mem->start << PAGE_SHIFT;
+	amdgpu_res_first(bo_mem, 0, bo_mem->size, &cursor);
+	gtt->offset = cursor.start;
 	amdgpu_gart_bind(adev, gtt->offset, ttm->num_pages,
 			 gtt->ttm.dma_address, flags);
 	gtt->bound = true;
@@ -916,6 +918,7 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
 	struct ttm_operation_ctx ctx = { false, false };
 	struct amdgpu_ttm_tt *gtt = ttm_to_amdgpu_ttm_tt(bo->ttm);
+	struct amdgpu_res_cursor cursor;
 	struct ttm_placement placement;
 	struct ttm_place placements;
 	struct ttm_resource *tmp;
@@ -927,7 +930,7 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
 
 	addr = amdgpu_gmc_agp_addr(bo);
 	if (addr != AMDGPU_BO_INVALID_OFFSET) {
-		bo->resource->start = addr >> PAGE_SHIFT;
+		bo->resource->start = addr;
 		return 0;
 	}
 
@@ -949,7 +952,8 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
 	flags = amdgpu_ttm_tt_pte_flags(adev, bo->ttm, tmp);
 
 	/* Bind pages */
-	gtt->offset = (u64)tmp->start << PAGE_SHIFT;
+	amdgpu_res_first(tmp, 0, tmp->size, &cursor);
+	gtt->offset = cursor.start;
 	amdgpu_ttm_gart_bind(adev, bo, flags);
 	amdgpu_gart_invalidate_tlb(adev);
 	ttm_resource_free(bo, &bo->resource);
-- 
2.32.0