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drm/amdgpu/sriov : Use kiq to do tlb invalidation for gfx10 on sriov

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On SRIOV run time, driver shouldn't directly access invalidation registers through MMIO.
Use kiq to submit wait_reg_mem package for the invalidation

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
shaoyunl
2020-04-09 15:53:17 -04:00
committed by Alex Deucher
parent 80c36f8646
commit 8db1015b99
2 changed files with 21 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
View File

@@ -3480,6 +3480,9 @@ static void gfx_v10_0_check_fw_write_wait(struct amdgpu_device *adev)
(adev->gfx.mec_feature_version >= 27))
adev->gfx.cp_fw_write_wait = true;
break;
case CHIP_SIENNA_CICHLID:
adev->gfx.cp_fw_write_wait = true;
break;
default:
break;
}

18
drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
View File

@@ -350,6 +350,24 @@ static void gmc_v10_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
/* flush hdp cache */
adev->nbio.funcs->hdp_flush(adev, NULL);
/* For SRIOV run time, driver shouldn't access the register through MMIO
* Directly use kiq to do the vm invalidation instead
*/
if (adev->gfx.kiq.ring.sched.ready &&
(amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev)) &&
!adev->in_gpu_reset) {
struct amdgpu_vmhub *hub = &adev->vmhub[vmhub];
const unsigned eng = 17;
u32 inv_req = gmc_v10_0_get_invalidate_req(vmid, flush_type);
u32 req = hub->vm_inv_eng0_req + eng;
u32 ack = hub->vm_inv_eng0_ack + eng;
amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, inv_req,
1 << vmid);
return;
}
mutex_lock(&adev->mman.gtt_window_lock);
if (vmhub == AMDGPU_MMHUB_0) {