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drm/amdgpu/sdma4: add emit_reg_write_reg_wait ring callback (v2) 

This adds support for writing and reading back in a single
oneshot packet.  This is needed to send a tlb invalidation
and wait for ack in a single operation.

v2: squash sdma hang fix into this patch

Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Emily Deng <Emily.Deng@amd.com>
This commit is contained in:
Alex Deucher 2018-03-27 16:51:41 -05:00
parent 10ed3c3190
commit 4dfe7d7b4e
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
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@ -1611,6 +1611,7 @@ static const struct amdgpu_ring_funcs sdma_v4_0_ring_funcs = {
.pad_ib = sdma_v4_0_ring_pad_ib,
.emit_wreg = sdma_v4_0_ring_emit_wreg,
.emit_reg_wait = sdma_v4_0_ring_emit_reg_wait,
.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
};
static void sdma_v4_0_set_ring_funcs(struct amdgpu_device *adev)