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this temporarily reverts
commit 6ec04e38b2f6 ("drm/amdgpu/sdma_v4_4_2: update VM flush implementation for SDMA")
it cause a regression.
Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This commit updates the VM flush implementation for the SDMA engine.
- Added a new function `sdma_v4_4_2_get_invalidate_req` to construct the VM_INVALIDATE_ENG0_REQ
register value for the specified VMID and flush type. This function ensures that all relevant
page table cache levels (L1 PTEs, L2 PTEs, and L2 PDEs) are invalidated.
- Modified the `sdma_v4_4_2_ring_emit_vm_flush` function to use the new `sdma_v4_4_2_get_invalidate_req`
function. The updated function emits the necessary register writes and waits to perform a VM flush
for the specified VMID. It updates the PTB address registers and issues a VM invalidation request
using the specified VM invalidation engine.
- Included the necessary header file `gc/gc_9_0_sh_mask.h` to provide access to the required register
definitions.
v2: vm flush by the vm inalidation packet (Lijo)
v3: code stle and define thh macro for the vm invalidation packet (Christian)
v4: Format definition sdma vm invalidate packet (Lijo)
Suggested-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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