drm/amdgpu/gfx8: align mqd settings with KFD

Make sure to set the quantum bits in the compute MQD
for better fairness across queues of the same priority.

Reviewed-by: Jesse Zhang <jesse.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index a6b4c8f41dc116c7e7af29a8825bea349b85ae3f..130196859ff3f94fa14cb0ccce36bd8c70bce7e3 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -4532,7 +4532,11 @@ static int gfx_v8_0_mqd_init(struct amdgpu_ring *ring)
 
        /* set static priority for a queue/ring */
        gfx_v8_0_mqd_set_priority(ring, mqd);
-       mqd->cp_hqd_quantum = RREG32(mmCP_HQD_QUANTUM);
+       tmp = RREG32(mmCP_HQD_QUANTUM);
+       tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_EN, 1);
+       tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_SCALE, 1);
+       tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_DURATION, 10);
+       mqd->cp_hqd_quantum = tmp;
 
        /* map_queues packet doesn't need activate the queue,
         * so only kiq need set this field.