1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2022 Intel Corporation 4 */ 5 6 #ifndef _XE_PM_H_ 7 #define _XE_PM_H_ 8 9 #include <linux/pm_runtime.h> 10 11 /* 12 * TODO: Threshold = 0 will block D3Cold. 13 * Before we can move this to a higher value (like 300), we need to: 14 * 1. rewrite the VRAM save / restore to avoid buffer object locks 15 */ 16 #define DEFAULT_VRAM_THRESHOLD 0 /* in MB */ 17 18 struct xe_device; 19 20 int xe_pm_suspend(struct xe_device *xe); 21 int xe_pm_resume(struct xe_device *xe); 22 23 void xe_pm_init(struct xe_device *xe); 24 void xe_pm_runtime_fini(struct xe_device *xe); 25 int xe_pm_runtime_suspend(struct xe_device *xe); 26 int xe_pm_runtime_resume(struct xe_device *xe); 27 int xe_pm_runtime_get(struct xe_device *xe); 28 int xe_pm_runtime_put(struct xe_device *xe); 29 int xe_pm_runtime_get_if_active(struct xe_device *xe); 30 void xe_pm_assert_unbounded_bridge(struct xe_device *xe); 31 int xe_pm_set_vram_threshold(struct xe_device *xe, u32 threshold); 32 void xe_pm_d3cold_allowed_toggle(struct xe_device *xe); 33 struct task_struct *xe_pm_read_callback_task(struct xe_device *xe); 34 35 #endif 36