Commit c7a7266b authored by Xiangliang Yu's avatar Xiangliang Yu Committed by Alex Deucher
Browse files

drm/amdgpu/gmc9: no need use kiq in vega10 tlb flush 



two reasons:
1. there is a spinlock around;
2. vm register is pf/vf copy, vf can access via mmio safely.

Signed-off-by: default avatarXiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: default avatarMonk Liu <Monk.Liu@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 86d3798a

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

+3 −3
Original line number Diff line number Diff line
@@ -197,11 +197,11 @@ static void gmc_v9_0_gart_flush_gpu_tlb(struct amdgpu_device *adev, 
		struct amdgpu_vmhub *hub = &adev->vmhub[i];

		u32 tmp = hub->get_invalidate_req(vmid);



		WREG32(hub->vm_inv_eng0_req + eng, tmp);

		WREG32_NO_KIQ(hub->vm_inv_eng0_req + eng, tmp);



		/* Busy wait for ACK.*/

		for (j = 0; j < 100; j++) {

			tmp = RREG32(hub->vm_inv_eng0_ack + eng);

			tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_ack + eng);

			tmp &= 1 << vmid;

			if (tmp)

				break;
@@ -212,7 +212,7 @@ static void gmc_v9_0_gart_flush_gpu_tlb(struct amdgpu_device *adev, 


		/* Wait for ACK with a delay.*/

		for (j = 0; j < adev->usec_timeout; j++) {

			tmp = RREG32(hub->vm_inv_eng0_ack + eng);

			tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_ack + eng);

			tmp &= 1 << vmid;

			if (tmp)

				break;

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