drm/amdgpu/gfx11: set UNORD_DISPATCH in compute MQDs

This needs to be set to 1 to avoid a potential deadlock in
the GC 10.x and newer.  On GC 9.x and older, this needs
to be set to 0. This can lead to hangs in some mixed
graphics and compute workloads. Updated firmware is also
required for AQL.

Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index 0ea0866..d9cf9fd 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -3846,7 +3846,7 @@ static int gfx_v11_0_compute_mqd_init(struct amdgpu_device *adev, void *m,
                            (order_base_2(prop->queue_size / 4) - 1));
        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, RPTR_BLOCK_SIZE,
                            (order_base_2(AMDGPU_GPU_PAGE_SIZE / 4) - 1));
-       tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, UNORD_DISPATCH, 0);
+       tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, UNORD_DISPATCH, 1);
        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, TUNNEL_DISPATCH,
                            prop->allow_tunneling);
        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, PRIV_STATE, 1);

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c
index 15277f1..d722cbd 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c
@@ -224,6 +224,7 @@ static void update_mqd(struct mqd_manager *mm, void *mqd,
        m->cp_hqd_pq_control = 5 << CP_HQD_PQ_CONTROL__RPTR_BLOCK_SIZE__SHIFT;
        m->cp_hqd_pq_control |=
                        ffs(q->queue_size / sizeof(unsigned int)) - 1 - 1;
+       m->cp_hqd_pq_control |= CP_HQD_PQ_CONTROL__UNORD_DISPATCH_MASK;
        pr_debug("cp_hqd_pq_control 0x%x\n", m->cp_hqd_pq_control);
 
        m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8);