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drm/amdgpu/sdma4: add emit_reg_write_reg_wait ring callback (v2)
authorAlex Deucher <alexander.deucher@amd.com>
Tue, 27 Mar 2018 21:51:41 +0000 (16:51 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 15 May 2018 18:43:14 +0000 (13:43 -0500)
commit4dfe7d7b4e3ba16fc377a48a221bfe8172bc50e1
tree61a8baa6c770d01c7892f485aa1c49f47e150e61tree | snapshot
parent10ed3c3190d38f189ed6857cecca1a2eb6de33a3commit | diff
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>
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c diff | blob | history
Domain: System / Kernel;