[PATCH 17/30] drm/amdgpu: plumb tlb inv method in amdgpu_gmc_flush_gpu_tlb_gart()

Plumb the invalidation method into amdgpu_gmc_flush_gpu_tlb_gart().
Keep the current behavior.

Signed-off-by: Alex Deucher <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index 6af4ed2170b06..779f9b0974d2e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -719,15 +719,25 @@ void amdgpu_gmc_flush_gpu_tlb_gart(struct amdgpu_device *adev,
 {
 	struct amdgpu_ring *ring;
 	struct amdgpu_vmhub *hub = &adev->vmhub[vmhub];
+	bool use_mmio;
 	struct dma_fence *fence;
 	struct amdgpu_job *job;
 	int r;
 
 	ring = to_amdgpu_ring(adev->mman.buffer_funcs_scheds[0]);
 
-	if (!hub->sdma_invalidation_workaround ||
-	    !adev->mman.buffer_funcs_enabled || !adev->ib_pool_ready ||
-	    !ring->sched.ready) {
+	switch (adev->gmc.gart_inv_method) {
+	case AMDGPU_TLB_INV_METHOD_MMIO:
+	default:
+		use_mmio = !hub->sdma_invalidation_workaround;
+		break;
+	case AMDGPU_TLB_INV_METHOD_SDMA:
+		use_mmio = false;
+		break;
+	}
+
+	if (!adev->mman.buffer_funcs_enabled ||
+	    !adev->ib_pool_ready || !ring->sched.ready || use_mmio) {
 		/*
 		 * A GPU reset should flush all TLBs anyway, so no need to do
 		 * this while one is ongoing.
-- 
2.55.0