From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 20 Feb 2025 21:31:40 +0000 (-0500)
Subject: drm/amdgpu/userq: add suspend and resume helpers
X-Git-Tag: v6.16-rc1~144^2~10^2~212
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=73e12e98ec0c5657c4a0c99c96bc4c608813365d;p=thirdparty%2Fkernel%2Flinux.git

drm/amdgpu/userq: add suspend and resume helpers

Add helpers to unmap and map user queues on suspend and
resume.

Reviewed-by: Sunil Khatri <sunil.khatri@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
index 41a095c12f956..f5c2489baae43 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.c
@@ -681,3 +681,42 @@ void amdgpu_userq_mgr_fini(struct amdgpu_userq_mgr *userq_mgr)
 	mutex_unlock(&userq_mgr->userq_mutex);
 	mutex_destroy(&userq_mgr->userq_mutex);
 }
+
+int amdgpu_userq_suspend(struct amdgpu_device *adev)
+{
+	const struct amdgpu_userq_funcs *userq_funcs;
+	struct amdgpu_usermode_queue *queue;
+	struct amdgpu_userq_mgr *uqm, *tmp;
+	int queue_id;
+	int ret = 0;
+
+	mutex_lock(&adev->userq_mutex);
+	list_for_each_entry_safe(uqm, tmp, &adev->userq_mgr_list, list) {
+		cancel_delayed_work_sync(&uqm->resume_work);
+		idr_for_each_entry(&uqm->userq_idr, queue, queue_id) {
+			userq_funcs = adev->userq_funcs[queue->queue_type];
+			ret |= userq_funcs->unmap(uqm, queue);
+		}
+	}
+	mutex_unlock(&adev->userq_mutex);
+	return ret;
+}
+
+int amdgpu_userq_resume(struct amdgpu_device *adev)
+{
+	const struct amdgpu_userq_funcs *userq_funcs;
+	struct amdgpu_usermode_queue *queue;
+	struct amdgpu_userq_mgr *uqm, *tmp;
+	int queue_id;
+	int ret = 0;
+
+	mutex_lock(&adev->userq_mutex);
+	list_for_each_entry_safe(uqm, tmp, &adev->userq_mgr_list, list) {
+		idr_for_each_entry(&uqm->userq_idr, queue, queue_id) {
+			userq_funcs = adev->userq_funcs[queue->queue_type];
+			ret |= userq_funcs->map(uqm, queue);
+		}
+	}
+	mutex_unlock(&adev->userq_mutex);
+	return ret;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.h
index a0cf6978f2ba8..381b9c6f0573d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userqueue.h
@@ -111,4 +111,7 @@ uint64_t amdgpu_userqueue_get_doorbell_index(struct amdgpu_userq_mgr *uq_mgr,
 					     struct amdgpu_db_info *db_info,
 					     struct drm_file *filp);
 
+int amdgpu_userq_suspend(struct amdgpu_device *adev);
+int amdgpu_userq_resume(struct amdgpu_device *adev);
+
 #endif