[PATCH 9/9] drm/amdgpu/userq: integrate with enforce isolation

[Alex Deucher]

Enforce isolation serializes access to the GFX IP.  User
queues are isolated in the MES scheduler, but we still
need to serialize between kernel queues and user queues.
For enforce isolation, group KGD user queues with KFD user
queues.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |  2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c    | 34 ++++++++++++----------
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h    |  6 ++--
 3 files changed, 22 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 4e1c97a919cec..3c6679fce7c20 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4344,7 +4344,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 		amdgpu_sync_create(&adev->isolation[i].active);
 		amdgpu_sync_create(&adev->isolation[i].prev);
 	}
-	mutex_init(&adev->gfx.kfd_sch_mutex);
+	mutex_init(&adev->gfx.userq_sch_mutex);
 	mutex_init(&adev->gfx.workload_profile_mutex);
 	mutex_init(&adev->vcn.workload_profile_mutex);
 	mutex_init(&adev->userq_mutex);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index a42ac1060fa92..e08323f601535 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -1928,39 +1928,41 @@ void amdgpu_gfx_cleaner_shader_init(struct amdgpu_device *adev,
 static void amdgpu_gfx_kfd_sch_ctrl(struct amdgpu_device *adev, u32 idx,
 				    bool enable)
 {
-	mutex_lock(&adev->gfx.kfd_sch_mutex);
+	mutex_lock(&adev->gfx.userq_sch_mutex);
 
 	if (enable) {
 		/* If the count is already 0, it means there's an imbalance bug somewhere.
 		 * Note that the bug may be in a different caller than the one which triggers the
 		 * WARN_ON_ONCE.
 		 */
-		if (WARN_ON_ONCE(adev->gfx.kfd_sch_req_count[idx] == 0)) {
+		if (WARN_ON_ONCE(adev->gfx.userq_sch_req_count[idx] == 0)) {
 			dev_err(adev->dev, "Attempted to enable KFD scheduler when reference count is already zero\n");
 			goto unlock;
 		}
 
-		adev->gfx.kfd_sch_req_count[idx]--;
+		adev->gfx.userq_sch_req_count[idx]--;
 
-		if (adev->gfx.kfd_sch_req_count[idx] == 0 &&
-		    adev->gfx.kfd_sch_inactive[idx]) {
+		if (adev->gfx.userq_sch_req_count[idx] == 0 &&
+		    adev->gfx.userq_sch_inactive[idx]) {
 			schedule_delayed_work(&adev->gfx.enforce_isolation[idx].work,
 					      msecs_to_jiffies(adev->gfx.enforce_isolation_time[idx]));
 		}
 	} else {
-		if (adev->gfx.kfd_sch_req_count[idx] == 0) {
+		if (adev->gfx.userq_sch_req_count[idx] == 0) {
 			cancel_delayed_work_sync(&adev->gfx.enforce_isolation[idx].work);
-			if (!adev->gfx.kfd_sch_inactive[idx]) {
-				amdgpu_amdkfd_stop_sched(adev, idx);
-				adev->gfx.kfd_sch_inactive[idx] = true;
+			if (!adev->gfx.userq_sch_inactive[idx]) {
+				amdgpu_userq_stop_sched(adev, idx);
+				if (adev->kfd.init_complete)
+					amdgpu_amdkfd_stop_sched(adev, idx);
+				adev->gfx.userq_sch_inactive[idx] = true;
 			}
 		}
 
-		adev->gfx.kfd_sch_req_count[idx]++;
+		adev->gfx.userq_sch_req_count[idx]++;
 	}
 
 unlock:
-	mutex_unlock(&adev->gfx.kfd_sch_mutex);
+	mutex_unlock(&adev->gfx.userq_sch_mutex);
 }
 
 /**
@@ -2005,12 +2007,12 @@ void amdgpu_gfx_enforce_isolation_handler(struct work_struct *work)
 				      msecs_to_jiffies(1));
 	} else {
 		/* Tell KFD to resume the runqueue */
-		if (adev->kfd.init_complete) {
-			WARN_ON_ONCE(!adev->gfx.kfd_sch_inactive[idx]);
-			WARN_ON_ONCE(adev->gfx.kfd_sch_req_count[idx]);
+		WARN_ON_ONCE(!adev->gfx.userq_sch_inactive[idx]);
+		WARN_ON_ONCE(adev->gfx.userq_sch_req_count[idx]);
+		amdgpu_userq_start_sched(adev, idx);
+		if (adev->kfd.init_complete)
 			amdgpu_amdkfd_start_sched(adev, idx);
-			adev->gfx.kfd_sch_inactive[idx] = false;
-		}
+		adev->gfx.userq_sch_inactive[idx] = false;
 	}
 	mutex_unlock(&adev->enforce_isolation_mutex);
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index caaddab31023f..70b64bb1847c9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -475,9 +475,9 @@ struct amdgpu_gfx {
 	bool				enable_cleaner_shader;
 	struct amdgpu_isolation_work	enforce_isolation[MAX_XCP];
 	/* Mutex for synchronizing KFD scheduler operations */
-	struct mutex                    kfd_sch_mutex;
-	u64				kfd_sch_req_count[MAX_XCP];
-	bool				kfd_sch_inactive[MAX_XCP];
+	struct mutex                    userq_sch_mutex;
+	u64				userq_sch_req_count[MAX_XCP];
+	bool				userq_sch_inactive[MAX_XCP];
 	unsigned long			enforce_isolation_jiffies[MAX_XCP];
 	unsigned long			enforce_isolation_time[MAX_XCP];
 
-- 
2.49.0