From: Jiadong Zhu <jiadong....@amd.com>
The parameter amdgpu_mcbp shall have priority against the default value
calculated from the chip version.
User could disable mcbp by setting the parameter mcbp as zero.
v2: do not trigger preemption in sw ring muxer when mcbp is disabled.
Signed-off-by: Jiadong Zhu <jiadong....@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 9 +++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.c | 2 +-
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 7314529553f6..615669dcabc2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3699,10 +3699,11 @@ static void amdgpu_device_set_mcbp(struct amdgpu_device
*adev)
{
if (amdgpu_mcbp == 1)
adev->gfx.mcbp = true;
-
- if ((adev->ip_versions[GC_HWIP][0] >= IP_VERSION(9, 0, 0)) &&
- (adev->ip_versions[GC_HWIP][0] < IP_VERSION(10, 0, 0)) &&
- adev->gfx.num_gfx_rings)
+ else if (amdgpu_mcbp == 0)
+ adev->gfx.mcbp = false;
+ else if ((adev->ip_versions[GC_HWIP][0] >= IP_VERSION(9, 0, 0)) &&
+ (adev->ip_versions[GC_HWIP][0] < IP_VERSION(10, 0, 0)) &&
+ adev->gfx.num_gfx_rings)
adev->gfx.mcbp = true;
if (amdgpu_sriov_vf(adev))
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.c
index b779ee4bbaa7..e1ee1c7117fb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.c
@@ -397,7 +397,7 @@ void amdgpu_sw_ring_ib_begin(struct amdgpu_ring *ring)
struct amdgpu_ring_mux *mux = &adev->gfx.muxer;
WARN_ON(!ring->is_sw_ring);
- if (ring->hw_prio > AMDGPU_RING_PRIO_DEFAULT) {
+ if (adev->gfx.mcbp && ring->hw_prio > AMDGPU_RING_PRIO_DEFAULT) {
if (amdgpu_mcbp_scan(mux) > 0)
amdgpu_mcbp_trigger_preempt(mux);
return;
--
2.25.1
