From: Christian König christian.koenig@amd.com
This avoids merging them together on page fault.
Signed-off-by: Christian König christian.koenig@amd.com Acked-by: Michel Dänzer michel.daenzer@amd.com --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 4 +--- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 16 ++++++++++++---- 2 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 387d190..10237a8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -927,8 +927,7 @@ int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo) size = bo->mem.num_pages << PAGE_SHIFT; offset = bo->mem.start << PAGE_SHIFT; /* TODO: figure out how to map scattered VRAM to the CPU */ - if ((offset + size) <= adev->mc.visible_vram_size && - (abo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)) + if ((offset + size) <= adev->mc.visible_vram_size) return 0;
/* Can't move a pinned BO to visible VRAM */ @@ -936,7 +935,6 @@ int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo) return -EINVAL;
/* hurrah the memory is not visible ! */ - abo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS; amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM); lpfn = adev->mc.visible_vram_size >> PAGE_SHIFT; for (i = 0; i < abo->placement.num_placement; i++) { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 524abca..10b793a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -529,9 +529,6 @@ static int amdgpu_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_ case TTM_PL_TT: break; case TTM_PL_VRAM: - if (mem->start == AMDGPU_BO_INVALID_OFFSET) - return -EINVAL; - mem->bus.offset = mem->start << PAGE_SHIFT; /* check if it's visible */ if ((mem->bus.offset + mem->bus.size) > adev->mc.visible_vram_size) @@ -549,6 +546,17 @@ static void amdgpu_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_re { }
+static unsigned long amdgpu_ttm_io_mem_pfn(struct ttm_buffer_object *bo, + unsigned long page_offset) +{ + struct drm_mm_node *mm = bo->mem.mm_node; + uint64_t size = mm->size; + + mm += page_offset / size; + page_offset %= size; + return (bo->mem.bus.base >> PAGE_SHIFT) + mm->start + page_offset; +} + /* * TTM backend functions. */ @@ -1064,7 +1072,7 @@ static struct ttm_bo_driver amdgpu_bo_driver = { .fault_reserve_notify = &amdgpu_bo_fault_reserve_notify, .io_mem_reserve = &amdgpu_ttm_io_mem_reserve, .io_mem_free = &amdgpu_ttm_io_mem_free, - .io_mem_pfn = ttm_bo_default_io_mem_pfn, + .io_mem_pfn = amdgpu_ttm_io_mem_pfn, };
int amdgpu_ttm_init(struct amdgpu_device *adev)