drm/amdgpu: add initial support for sdma v5.0 (v6)
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>
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