From: shaoyunl <shaoyun.liu@xxxxxxx>
Enable basic mode handling for doorbell ring on unmapped CP queue.
In this mode, MES can start schedule the queue mapping based on HW
interrupt instead of timer.
Signed-off-by: shaoyunl <shaoyun.liu@xxxxxxx>
Reviewed-by: Harish Kasiviswanthan <Harish.Kasiviswanthan@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/mes_v12_0.c | 16 +++++++++++++++-
drivers/gpu/drm/amd/include/mes_v12_api_def.h | 3 ++-
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
index 2d713e7b976aa..4a041cc22f68a 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
@@ -394,7 +394,14 @@ static int mes_v12_0_set_hw_resources(struct amdgpu_mes *mes)
mes_set_hw_res_pkt.disable_mes_log = 1;
mes_set_hw_res_pkt.use_different_vmid_compute = 1;
mes_set_hw_res_pkt.enable_reg_active_poll = 1;
- mes_set_hw_res_pkt.oversubscription_timer = 50;
+
+ /*
+ * No need to enable oversubscribe timer when we have unmapped doorbell
+ * handling support.
+ * handling mode - 0: disabled; 1: basic version; 2: basic+ version
+ */
+ mes_set_hw_res_pkt.oversubscription_timer = 0;
+ mes_set_hw_res_pkt.unmapped_doorbell_handling = 1;
return mes_v12_0_submit_pkt_and_poll_completion(mes,
&mes_set_hw_res_pkt, sizeof(mes_set_hw_res_pkt),
@@ -831,6 +838,13 @@ static int mes_v12_0_mqd_init(struct amdgpu_ring *ring)
mqd->cp_hqd_iq_timer = regCP_HQD_IQ_TIMER_DEFAULT;
mqd->cp_hqd_quantum = regCP_HQD_QUANTUM_DEFAULT;
+ /*
+ * Set CP_HQD_GFX_CONTROL.DB_UPDATED_MSG_EN[15] to enable unmapped
+ * doorbell handling. This is a reserved CP internal register can
+ * not be accesss by others
+ */
+ mqd->reserved_184 = BIT(15);
+
return 0;
}
diff --git a/drivers/gpu/drm/amd/include/mes_v12_api_def.h b/drivers/gpu/drm/amd/include/mes_v12_api_def.h
index 81cc0a5540492..2cdecf937acef 100644
--- a/drivers/gpu/drm/amd/include/mes_v12_api_def.h
+++ b/drivers/gpu/drm/amd/include/mes_v12_api_def.h
@@ -238,7 +238,8 @@ union MESAPI_SET_HW_RESOURCES {
uint32_t send_write_data : 1;
uint32_t os_tdr_timeout_override : 1;
uint32_t use_rs64mem_for_proc_gang_ctx : 1;
- uint32_t reserved : 17;
+ uint32_t unmapped_doorbell_handling: 2;
+ uint32_t reserved : 15;
};
uint32_t uint32_all;
};
--
2.44.0
