drm/amd/amdgpu: Implement MES suspend/resume gang functionality for v12

This commit implements the actual MES (Micro Engine Scheduler) suspend
and resume gang operations for version 12 hardware. Previously these
functions were just stubs returning success.

v2: Always use AMDGPU_MES_SCHED_PIPE

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

diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
index ff5df28b57ec027b5126de46fb0ba37daca7dcdd..0075bb2ed66c89ca41a04e02f12986112fb39c1a 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
@@ -568,13 +568,41 @@ static int mes_v12_0_unmap_legacy_queue(struct amdgpu_mes *mes,
 static int mes_v12_0_suspend_gang(struct amdgpu_mes *mes,
                                  struct mes_suspend_gang_input *input)
 {
-       return 0;
+       union MESAPI__SUSPEND mes_suspend_gang_pkt;
+
+       memset(&mes_suspend_gang_pkt, 0, sizeof(mes_suspend_gang_pkt));
+
+       mes_suspend_gang_pkt.header.type = MES_API_TYPE_SCHEDULER;
+       mes_suspend_gang_pkt.header.opcode = MES_SCH_API_SUSPEND;
+       mes_suspend_gang_pkt.header.dwsize = API_FRAME_SIZE_IN_DWORDS;
+
+       mes_suspend_gang_pkt.suspend_all_gangs = input->suspend_all_gangs;
+       mes_suspend_gang_pkt.gang_context_addr = input->gang_context_addr;
+       mes_suspend_gang_pkt.suspend_fence_addr = input->suspend_fence_addr;
+       mes_suspend_gang_pkt.suspend_fence_value = input->suspend_fence_value;
+
+       return mes_v12_0_submit_pkt_and_poll_completion(mes, AMDGPU_MES_SCHED_PIPE,
+                       &mes_suspend_gang_pkt, sizeof(mes_suspend_gang_pkt),
+                       offsetof(union MESAPI__SUSPEND, api_status));
 }
 
 static int mes_v12_0_resume_gang(struct amdgpu_mes *mes,
                                 struct mes_resume_gang_input *input)
 {
-       return 0;
+       union MESAPI__RESUME mes_resume_gang_pkt;
+
+       memset(&mes_resume_gang_pkt, 0, sizeof(mes_resume_gang_pkt));
+
+       mes_resume_gang_pkt.header.type = MES_API_TYPE_SCHEDULER;
+       mes_resume_gang_pkt.header.opcode = MES_SCH_API_RESUME;
+       mes_resume_gang_pkt.header.dwsize = API_FRAME_SIZE_IN_DWORDS;
+
+       mes_resume_gang_pkt.resume_all_gangs = input->resume_all_gangs;
+       mes_resume_gang_pkt.gang_context_addr = input->gang_context_addr;
+
+       return mes_v12_0_submit_pkt_and_poll_completion(mes, AMDGPU_MES_SCHED_PIPE,
+                       &mes_resume_gang_pkt, sizeof(mes_resume_gang_pkt),
+                       offsetof(union MESAPI__RESUME, api_status));
 }
 
 static int mes_v12_0_query_sched_status(struct amdgpu_mes *mes, int pipe)