| 1 | /* SPDX-License-Identifier: MIT */ |
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| 2 | /* |
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| 3 | * Copyright © 2022 Intel Corporation |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef _XE_PM_H_ |
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| 7 | #define _XE_PM_H_ |
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| 8 | |
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| 9 | #include <linux/cleanup.h> |
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| 10 | #include <linux/pm_runtime.h> |
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| 11 | |
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| 12 | #define DEFAULT_VRAM_THRESHOLD 300 /* in MB */ |
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| 13 | |
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| 14 | struct xe_device; |
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| 15 | |
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| 16 | int xe_pm_suspend(struct xe_device *xe); |
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| 17 | int xe_pm_resume(struct xe_device *xe); |
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| 18 | |
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| 19 | int xe_pm_init_early(struct xe_device *xe); |
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| 20 | int xe_pm_init(struct xe_device *xe); |
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| 21 | void xe_pm_fini(struct xe_device *xe); |
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| 22 | bool xe_pm_runtime_suspended(struct xe_device *xe); |
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| 23 | int xe_pm_runtime_suspend(struct xe_device *xe); |
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| 24 | int xe_pm_runtime_resume(struct xe_device *xe); |
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| 25 | void xe_pm_runtime_get(struct xe_device *xe); |
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| 26 | int xe_pm_runtime_get_ioctl(struct xe_device *xe); |
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| 27 | void xe_pm_runtime_put(struct xe_device *xe); |
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| 28 | bool xe_pm_runtime_get_if_active(struct xe_device *xe); |
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| 29 | bool xe_pm_runtime_get_if_in_use(struct xe_device *xe); |
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| 30 | void xe_pm_runtime_get_noresume(struct xe_device *xe); |
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| 31 | bool xe_pm_runtime_resume_and_get(struct xe_device *xe); |
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| 32 | void xe_pm_assert_unbounded_bridge(struct xe_device *xe); |
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| 33 | int xe_pm_set_vram_threshold(struct xe_device *xe, u32 threshold); |
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| 34 | void xe_pm_d3cold_allowed_toggle(struct xe_device *xe); |
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| 35 | bool xe_rpm_reclaim_safe(const struct xe_device *xe); |
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| 36 | struct task_struct *xe_pm_read_callback_task(struct xe_device *xe); |
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| 37 | int xe_pm_block_on_suspend(struct xe_device *xe); |
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| 38 | void xe_pm_might_block_on_suspend(void); |
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| 39 | int xe_pm_module_init(void); |
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| 40 | |
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| 41 | static inline void __xe_pm_runtime_noop(struct xe_device *xe) {} |
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| 42 | |
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| 43 | DEFINE_GUARD(xe_pm_runtime, struct xe_device *, |
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| 44 | xe_pm_runtime_get(_T), xe_pm_runtime_put(_T)) |
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| 45 | DEFINE_GUARD(xe_pm_runtime_noresume, struct xe_device *, |
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| 46 | xe_pm_runtime_get_noresume(_T), xe_pm_runtime_put(_T)) |
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| 47 | DEFINE_GUARD_COND(xe_pm_runtime, _ioctl, xe_pm_runtime_get_ioctl(_T), _RET >= 0) |
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| 48 | |
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| 49 | /* |
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| 50 | * Used when a function needs to release runtime PM in all possible cases |
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| 51 | * and error paths, but the wakeref was already acquired by a different |
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| 52 | * function (i.e., get() has already happened so only a put() is needed). |
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| 53 | */ |
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| 54 | DEFINE_GUARD(xe_pm_runtime_release_only, struct xe_device *, |
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| 55 | __xe_pm_runtime_noop(_T), xe_pm_runtime_put(_T)); |
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| 56 | |
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| 57 | #endif |
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| 58 | |
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