[v9 03/11] drm/amd/amdgpu: Implement MES suspend/resume gang functionality for v12

[Jesse . Zhang]

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

Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Jesse Zhang <jesse.zh...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/mes_v12_0.c | 32 ++++++++++++++++++++++++--
 1 file changed, 30 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 6b222630f3fa..24c61239b25d 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
@@ -567,13 +567,41 @@ 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)
-- 
2.49.0