From: Amber Lin <Amber.Lin@amd.com>
Date: Fri, 13 Mar 2026 11:00:36 +0000 (-0400)
Subject: drm/amdgpu: Enable suspend/resume gang in mes 12.1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5071ccf2b1c3c8b7cb3b9a2f9012b285cf5eefbf;p=thirdparty%2Fkernel%2Flinux.git

drm/amdgpu: Enable suspend/resume gang in mes 12.1

This patch adds code to mes_v12_1_suspend_gang and mes_v12_1_resume_gang.

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

diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v12_1.c b/drivers/gpu/drm/amd/amdgpu/mes_v12_1.c
index 2d8a10d189398..600d7d6588263 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v12_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_1.c
@@ -469,13 +469,43 @@ static int mes_v12_1_unmap_legacy_queue(struct amdgpu_mes *mes,
 static int mes_v12_1_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;
+
+	/* Suspend gang is handled by master MES */
+	return mes_v12_1_submit_pkt_and_poll_completion(mes, input->xcc_id, AMDGPU_MES_SCHED_PIPE,
+			&mes_suspend_gang_pkt, sizeof(mes_suspend_gang_pkt),
+			offsetof(union MESAPI__SUSPEND, api_status));
 }
 
 static int mes_v12_1_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;
+
+	/* Resume gang is handled by master MES */
+	return mes_v12_1_submit_pkt_and_poll_completion(mes, input->xcc_id, AMDGPU_MES_SCHED_PIPE,
+			&mes_resume_gang_pkt, sizeof(mes_resume_gang_pkt),
+			offsetof(union MESAPI__RESUME, api_status));
 }
 
 static int mes_v12_1_query_sched_status(struct amdgpu_mes *mes,