On Fri, Aug 24, 2018 at 10:20 AM Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
>
> Helper to get the PDE for a PD/PT.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
A few comments below. With those fixed:
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 37 +++++++++++++++++++++++--
> drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 2 ++
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 21 ++++++++++++--
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 +--
> 5 files changed, 57 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> index 36058feac64f..6f79ce108728 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
> @@ -26,6 +26,38 @@
>
> #include "amdgpu.h"
>
> +/**
> + * amdgpu_gmc_get_pde_for_bo - get the PDE for a BO
> + *
> + * @bo: the BO to get the PDE for
> + * @level: the level in the PD hirarchy
> + * @addr: resulting addr
> + * @flags: resulting flags
> + *
> + * Get the address and flags to be used for a PDE.
Define PDE (Page Directory Entry) to make it clear what it is.
> + */
> +void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level,
> + uint64_t *addr, uint64_t *flags)
> +{
> + struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
> + struct ttm_dma_tt *ttm;
> +
> + switch (bo->tbo.mem.mem_type) {
> + case TTM_PL_TT:
> + ttm = container_of(bo->tbo.ttm, struct ttm_dma_tt, ttm);
> + *addr = ttm->dma_address[0];
> + break;
> + case TTM_PL_VRAM:
> + *addr = amdgpu_bo_gpu_offset(bo);
> + break;
> + default:
> + *addr = 0;
> + break;
> + }
> + *flags = amdgpu_ttm_tt_pde_flags(bo->tbo.ttm, &bo->tbo.mem);
> + amdgpu_gmc_get_vm_pde(adev, level, addr, flags);
> +}
> +
> /**
> * amdgpu_gmc_pd_addr - return the address of the root directory
> *
> @@ -35,13 +67,14 @@ uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo)
> struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
> uint64_t pd_addr;
>
> - pd_addr = amdgpu_bo_gpu_offset(bo);
> /* TODO: move that into ASIC specific code */
> if (adev->asic_type >= CHIP_VEGA10) {
> uint64_t flags = AMDGPU_PTE_VALID;
>
> - amdgpu_gmc_get_vm_pde(adev, -1, &pd_addr, &flags);
> + amdgpu_gmc_get_pde_for_bo(bo, -1, &pd_addr, &flags);
> pd_addr |= flags;
> + } else {
> + pd_addr = amdgpu_bo_gpu_offset(bo);
> }
> return pd_addr;
> }
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
> index 7c469cce0498..0d2c9f65ca13 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
> @@ -131,6 +131,8 @@ static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
> return (gmc->real_vram_size == gmc->visible_vram_size);
> }
>
> +void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level,
> + uint64_t *addr, uint64_t *flags);
> uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo);
>
> #endif
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index eb08a03b82a0..72366643e3c2 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -1428,13 +1428,14 @@ bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm)
> }
>
> /**
> - * amdgpu_ttm_tt_pte_flags - Compute PTE flags for ttm_tt object
> + * amdgpu_ttm_tt_pde_flags - Compute PDE flags for ttm_tt object
> *
> * @ttm: The ttm_tt object to compute the flags for
> * @mem: The memory registry backing this ttm_tt object
> + *
> + * Figure out the flags to use for a VM PDE.
Define PDE here as well.
> */
> -uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
> - struct ttm_mem_reg *mem)
> +uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
> {
> uint64_t flags = 0;
>
> @@ -1448,6 +1449,20 @@ uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
> flags |= AMDGPU_PTE_SNOOPED;
> }
>
> + return flags;
> +}
> +
> +/**
> + * amdgpu_ttm_tt_pte_flags - Compute PTE flags for ttm_tt object
> + *
> + * @ttm: The ttm_tt object to compute the flags for
> + * @mem: The memory registry backing this ttm_tt object
Define PTE here and add a function description.
> + */
> +uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
> + struct ttm_mem_reg *mem)
> +{
> + uint64_t flags = amdgpu_ttm_tt_pde_flags(ttm, mem);
> +
> flags |= adev->gart.gart_pte_flags;
> flags |= AMDGPU_PTE_READABLE;
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> index 8b3cc6687769..fe8f276e9811 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
> @@ -116,6 +116,7 @@ bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
> int *last_invalidated);
> bool amdgpu_ttm_tt_userptr_needs_pages(struct ttm_tt *ttm);
> bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm);
> +uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_mem_reg *mem);
> uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
> struct ttm_mem_reg *mem);
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index d7ecbeb2f8a4..c951ebeac5fd 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@ -992,9 +992,7 @@ static void amdgpu_vm_update_pde(struct amdgpu_pte_update_params *params,
> pbo = pbo->parent;
>
> level += params->adev->vm_manager.root_level;
> - pt = amdgpu_bo_gpu_offset(entry->base.bo);
> - flags = AMDGPU_PTE_VALID;
> - amdgpu_gmc_get_vm_pde(params->adev, level, &pt, &flags);
> + amdgpu_gmc_get_pde_for_bo(entry->base.bo, level, &pt, &flags);
> pde = (entry - parent->entries) * 8;
> if (bo->shadow)
> params->func(params, bo->shadow, pde, pt, 1, 0, flags);
> --
> 2.17.1
>
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