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drm/amdgpu: Export function to flush TLB of specific vm hub

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This is for kfd to reuse amdgpu TLB invalidation function.
On gfx10, kfd only needs to flush TLB on gfx hub but not
on mm hub. So export a function for KFD flush TLB only on
specific hub.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Christian Konig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Oak Zeng
2019-08-01 14:55:45 -05:00
committed by Alex Deucher
parent 675a9e38b3
commit 3ff985485b
9 changed files with 78 additions and 57 deletions
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12
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
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@@ -670,7 +670,7 @@ static int invalidate_tlbs_with_kiq(struct amdgpu_device *adev, uint16_t pasid,
int kgd_gfx_v9_invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid)
{
struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
int vmid;
int vmid, i;
struct amdgpu_ring *ring = &adev->gfx.kiq.ring;
uint32_t flush_type = 0;
@@ -689,8 +689,9 @@ int kgd_gfx_v9_invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid)
if (kgd_gfx_v9_get_atc_vmid_pasid_mapping_valid(kgd, vmid)) {
if (kgd_gfx_v9_get_atc_vmid_pasid_mapping_pasid(kgd, vmid)
== pasid) {
amdgpu_gmc_flush_gpu_tlb(adev, vmid,
flush_type);
for (i = 0; i < adev->num_vmhubs; i++)
amdgpu_gmc_flush_gpu_tlb(adev, vmid,
i, flush_type);
break;
}
}
@@ -702,6 +703,7 @@ int kgd_gfx_v9_invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid)
int kgd_gfx_v9_invalidate_tlbs_vmid(struct kgd_dev *kgd, uint16_t vmid)
{
struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
int i;
if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid)) {
pr_err("non kfd vmid %d\n", vmid);
@@ -723,7 +725,9 @@ int kgd_gfx_v9_invalidate_tlbs_vmid(struct kgd_dev *kgd, uint16_t vmid)
* TODO 2: support range-based invalidation, requires kfg2kgd
* interface change
*/
amdgpu_gmc_flush_gpu_tlb(adev, vmid, 0);
for (i = 0; i < adev->num_vmhubs; i++)
amdgpu_gmc_flush_gpu_tlb(adev, vmid, i, 0);
return 0;
}