Am 09.08.19 um 06:21 schrieb Zeng, Oak:
> Calling amdgpu function to invalidate TLB, instead of using a
> kfd implementation. Delete the kfd local TLB invalidation
> implementation.
>
> Change-Id: Ia16fcf9091a93b8c0acdaf9981f8a5a1f9a5ca1d
> Signed-off-by: Oak Zeng <oak.z...@amd.com>
Reviewed-by: Christian König <christian.koe...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c | 41
> ++--------------------
> 1 file changed, 3 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
> index 39ffb07..3aff2b5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
> @@ -802,42 +802,6 @@ static uint16_t get_atc_vmid_pasid_mapping_pasid(struct
> kgd_dev *kgd,
> return reg & ATC_VMID0_PASID_MAPPING__PASID_MASK;
> }
>
> -static void write_vmid_invalidate_request(struct kgd_dev *kgd, uint8_t vmid)
> -{
> - struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
> - uint32_t req = (1 << vmid) |
> - (0 << GCVM_INVALIDATE_ENG0_REQ__FLUSH_TYPE__SHIFT) |/* legacy */
> - GCVM_INVALIDATE_ENG0_REQ__INVALIDATE_L2_PTES_MASK |
> - GCVM_INVALIDATE_ENG0_REQ__INVALIDATE_L2_PDE0_MASK |
> - GCVM_INVALIDATE_ENG0_REQ__INVALIDATE_L2_PDE1_MASK |
> - GCVM_INVALIDATE_ENG0_REQ__INVALIDATE_L2_PDE2_MASK |
> - GCVM_INVALIDATE_ENG0_REQ__INVALIDATE_L1_PTES_MASK;
> -
> - mutex_lock(&adev->srbm_mutex);
> -
> - /* Use light weight invalidation.
> - *
> - * TODO 1: agree on the right set of invalidation registers for
> - * KFD use. Use the last one for now. Invalidate only GCHUB as
> - * SDMA is now moved to GCHUB
> - *
> - * TODO 2: support range-based invalidation, requires kfg2kgd
> - * interface change
> - */
> - WREG32(SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32),
> - 0xffffffff);
> - WREG32(SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_HI32),
> - 0x0000001f);
> -
> - WREG32(SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_REQ), req);
> -
> - while (!(RREG32(SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ACK)) &
> - (1 << vmid)))
> - cpu_relax();
> -
> - mutex_unlock(&adev->srbm_mutex);
> -}
> -
> static int invalidate_tlbs_with_kiq(struct amdgpu_device *adev, uint16_t
> pasid)
> {
> signed long r;
> @@ -878,7 +842,8 @@ static int invalidate_tlbs(struct kgd_dev *kgd, uint16_t
> pasid)
> if (get_atc_vmid_pasid_mapping_valid(kgd, vmid)) {
> if (get_atc_vmid_pasid_mapping_pasid(kgd, vmid)
> == pasid) {
> - write_vmid_invalidate_request(kgd, vmid);
> + amdgpu_gmc_flush_gpu_tlb(adev, vmid,
> + AMDGPU_GFXHUB_0, 0);
> break;
> }
> }
> @@ -896,7 +861,7 @@ static int invalidate_tlbs_vmid(struct kgd_dev *kgd,
> uint16_t vmid)
> return 0;
> }
>
> - write_vmid_invalidate_request(kgd, vmid);
> + amdgpu_gmc_flush_gpu_tlb(adev, vmid, AMDGPU_GFXHUB_0, 0);
> return 0;
> }
>
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