On 2020-02-19 08:53, Nirmoy Das wrote:
> GPU address should belong to driver not in memory management.
> This patch moves ttm bo.offset and gpu_offset calculation to amdgpu driver.
>
> Signed-off-by: Nirmoy Das <nirmoy....@amd.com>
> Acked-by: Huang Rui <ray.hu...@amd.com>
> Reviewed-by: Christian König <christian.koe...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 22 ++++++++++++++--
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 29 ++++++++++++++++------
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 1 +
> 4 files changed, 44 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index e3f16b49e970..04e78f783638 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -917,7 +917,7 @@ int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32
> domain,
> bo->pin_count++;
>
> if (max_offset != 0) {
> - u64 domain_start =
> bo->tbo.bdev->man[mem_type].gpu_offset;
> + u64 domain_start = amdgpu_ttm_domain_start(adev,
> mem_type);
> WARN_ON_ONCE(max_offset <
> (amdgpu_bo_gpu_offset(bo) - domain_start));
> }
> @@ -1445,7 +1445,25 @@ u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
> WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_VRAM &&
> !(bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS));
>
> - return amdgpu_gmc_sign_extend(bo->tbo.offset);
> + return amdgpu_bo_gpu_offset_no_check(bo);
> +}
> +
> +/**
> + * amdgpu_bo_gpu_offset_no_check - return GPU offset of bo
> + * @bo: amdgpu object for which we query the offset
> + *
> + * Returns:
> + * current GPU offset of the object without raising warnings.
> + */
> +u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo)
> +{
> + struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
> + uint64_t offset;
> +
> + offset = (bo->tbo.mem.start << PAGE_SHIFT) +
> + amdgpu_ttm_domain_start(adev, bo->tbo.mem.mem_type);
> +
> + return amdgpu_gmc_sign_extend(offset);
> }
>
> /**
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> index 36dec51d1ef1..1d86b4c7a1f2 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> @@ -279,6 +279,7 @@ void amdgpu_bo_fence(struct amdgpu_bo *bo, struct
> dma_fence *fence,
> bool shared);
> int amdgpu_bo_sync_wait(struct amdgpu_bo *bo, void *owner, bool intr);
> u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo);
> +u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo);
> int amdgpu_bo_validate(struct amdgpu_bo *bo);
> int amdgpu_bo_restore_shadow(struct amdgpu_bo *shadow,
> struct dma_fence **fence);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 3ab46d4647e4..e329a108e760 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -97,7 +97,6 @@ static int amdgpu_init_mem_type(struct ttm_bo_device *bdev,
> uint32_t type,
> case TTM_PL_TT:
> /* GTT memory */
> man->func = &amdgpu_gtt_mgr_func;
> - man->gpu_offset = adev->gmc.gart_start;
> man->available_caching = TTM_PL_MASK_CACHING;
> man->default_caching = TTM_PL_FLAG_CACHED;
> man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA;
> @@ -105,7 +104,6 @@ static int amdgpu_init_mem_type(struct ttm_bo_device
> *bdev, uint32_t type,
> case TTM_PL_VRAM:
> /* "On-card" video ram */
> man->func = &amdgpu_vram_mgr_func;
> - man->gpu_offset = adev->gmc.vram_start;
> man->flags = TTM_MEMTYPE_FLAG_FIXED |
> TTM_MEMTYPE_FLAG_MAPPABLE;
> man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
> @@ -116,7 +114,6 @@ static int amdgpu_init_mem_type(struct ttm_bo_device
> *bdev, uint32_t type,
> case AMDGPU_PL_OA:
> /* On-chip GDS memory*/
> man->func = &ttm_bo_manager_func;
> - man->gpu_offset = 0;
> man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_CMA;
> man->available_caching = TTM_PL_FLAG_UNCACHED;
> man->default_caching = TTM_PL_FLAG_UNCACHED;
> @@ -264,7 +261,7 @@ static uint64_t amdgpu_mm_node_addr(struct
> ttm_buffer_object *bo,
>
> if (mm_node->start != AMDGPU_BO_INVALID_OFFSET) {
> addr = mm_node->start << PAGE_SHIFT;
> - addr += bo->bdev->man[mem->mem_type].gpu_offset;
> + addr += amdgpu_ttm_domain_start(amdgpu_ttm_adev(bo->bdev),
> mem->mem_type);
> }
> return addr;
> }
> @@ -751,6 +748,27 @@ static unsigned long amdgpu_ttm_io_mem_pfn(struct
> ttm_buffer_object *bo,
> (offset >> PAGE_SHIFT);
> }
>
> +/**
> + * amdgpu_ttm_domain_start - Returns GPU start address
> + * @adev: amdgpu device object
> + * @type: type of the memory
> + *
> + * Returns:
> + * GPU start address of a memory domain
> + */
> +
> +uint64_t amdgpu_ttm_domain_start(struct amdgpu_device *adev, uint32_t type)
> +{
> + switch(type) {
LKCS wants a space after keywords. "switch ("
> + case TTM_PL_TT:
> + return adev->gmc.gart_start;
> + case TTM_PL_VRAM:
> + return adev->gmc.vram_start;
> + }
Could you have parameterized this address
to index it into an array by "type" and return
the address, as opposed to using a switch-case?
Regards,
Luben
> +
> + return 0;
> +}
> +
> /*
> * TTM backend functions.
> */
> @@ -1162,9 +1180,6 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
> bo->mem = tmp;
> }
>
> - bo->offset = (bo->mem.start << PAGE_SHIFT) +
> - bo->bdev->man[bo->mem.mem_type].gpu_offset;
> -
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> index 0dddedc06ae3..2c90a95c4b27 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> @@ -102,6 +102,7 @@ int amdgpu_fill_buffer(struct amdgpu_bo *bo,
> int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma);
> int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
> int amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
> +uint64_t amdgpu_ttm_domain_start(struct amdgpu_device *adev, uint32_t type);
>
> #if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
> int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages);
>
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