[why]
When page fault happens, it could lead to sdma hang is RESP_MODE =
0 for non-PRT case.
[how]
Setting SDMAx_UTCL1_CNTL.RESP_MODE to 0b011 to avoid SDMA halt.
Reviewed-by: Jack Xiao <Jack.Xiao@amd.com>
Signed-off-by: tiancyin <tianci.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
SDMA (System DMA) is a general purpose DMA engine usable
by UMDs for transfers or the kernel for paging or GPUVM
updates.
v1: support basic funcitonalites includes rb, ib, vm,
copy buffer and trap irq
v2: convert to use new get_vm_pde in emit_vm_flush
v3: retire amdgpu_ttm_set_active_vram_size from sdma v5
v4: retire the redundant hdp_invalidate implementation
v5: squash in updates
v6: some golden regs moved to vbios
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
