[v6 09/13] drm/amd/amdgpu: Implement MES suspend/resume gang functionality for v12
Jesse.Zhang
Jesse.Zhang at amd.com
Mon Aug 4 08:38:27 UTC 2025
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.
Signed-off-by: Jesse Zhang <Jesse.Zhang at amd.com>
---
drivers/gpu/drm/amd/amdgpu/mes_v12_0.c | 44 ++++++++++++++++++++++++--
1 file changed, 42 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 579720695e9e..9c86dfdef1bb 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c
@@ -569,13 +569,53 @@ 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;
+ int pipe;
+
+ 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;
+
+ if (mes->adev->enable_uni_mes)
+ pipe = AMDGPU_MES_KIQ_PIPE;
+ else
+ pipe = AMDGPU_MES_SCHED_PIPE;
+
+ return mes_v12_0_submit_pkt_and_poll_completion(mes, 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;
+ int pipe;
+
+ 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;
+
+ if (mes->adev->enable_uni_mes)
+ pipe = AMDGPU_MES_KIQ_PIPE;
+ else
+ pipe = AMDGPU_MES_SCHED_PIPE;
+
+ return mes_v12_0_submit_pkt_and_poll_completion(mes, 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
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