From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-pra...@amd.com>
Send this patch on behalf of Pierre-Eric.
This achieves the same result as the sequence used in emit_flush_gpu_tlb
but the invalidation is now a single packet instead of the 3 packets
required to implement reg_write_reg_wait.
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-pra...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
index 3d36329be384..8d0c8f2cac06 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
@@ -1175,7 +1175,28 @@ static void sdma_v6_0_ring_emit_pipeline_sync(struct
amdgpu_ring *ring)
static void sdma_v6_0_ring_emit_vm_flush(struct amdgpu_ring *ring,
unsigned vmid, uint64_t pd_addr)
{
- amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
+ struct amdgpu_vmhub *hub = &ring->adev->vmhub[ring->funcs->vmhub];
+ uint32_t req = hub->vmhub_funcs->get_invalidate_req(vmid, 0);
+
+ /* Update the PD address for this VMID. */
+ amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_lo32 +
+ (hub->ctx_addr_distance * vmid),
+ lower_32_bits(pd_addr));
+ amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_hi32 +
+ (hub->ctx_addr_distance * vmid),
+ upper_32_bits(pd_addr));
+
+ /* Trigger invalidation. */
+ amdgpu_ring_write(ring,
+
SDMA_PKT_VM_INVALIDATION_HEADER_OP(SDMA_OP_POLL_REGMEM) |
+
SDMA_PKT_VM_INVALIDATION_HEADER_SUB_OP(SDMA_SUBOP_VM_INVALIDATION) |
+
SDMA_PKT_VM_INVALIDATION_HEADER_GFX_ENG_ID(ring->vm_inv_eng) |
+ SDMA_PKT_VM_INVALIDATION_HEADER_MM_ENG_ID(0x1f));
+ amdgpu_ring_write(ring, req);
+ amdgpu_ring_write(ring, 0xFFFFFFFF);
+ amdgpu_ring_write(ring,
+
SDMA_PKT_VM_INVALIDATION_ADDRESSRANGEHI_INVALIDATEACK(1 << vmid) |
+
SDMA_PKT_VM_INVALIDATION_ADDRESSRANGEHI_ADDRESSRANGEHI(0x1F));
}
static void sdma_v6_0_ring_emit_wreg(struct amdgpu_ring *ring,
--
2.40.0
