c086bfc6ff
xe_pm_init may encounter failures for various reasons, such as a failure in initializing drmm_mutex, or when dealing with a d3cold-capable device for vram_threshold sysfs creation and setting default threshold. Presently, all these potential failures are disregarded. Move d3cold.lock initialization to xe_pm_init_early and cause driver abort if mutex initialization has failed. For xe_pm_init failures cleanup the driver and return error code -v2 Make mutex init cleaner (Lucas) Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240412181211.1155732-8-himal.prasad.ghimiray@intel.com Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2022 Intel Corporation
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*/
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#ifndef _XE_PM_H_
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#define _XE_PM_H_
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#include <linux/pm_runtime.h>
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/*
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* TODO: Threshold = 0 will block D3Cold.
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* Before we can move this to a higher value (like 300), we need to:
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* 1. rewrite the VRAM save / restore to avoid buffer object locks
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*/
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#define DEFAULT_VRAM_THRESHOLD 0 /* in MB */
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struct xe_device;
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int xe_pm_suspend(struct xe_device *xe);
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int xe_pm_resume(struct xe_device *xe);
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int xe_pm_init_early(struct xe_device *xe);
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int xe_pm_init(struct xe_device *xe);
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void xe_pm_runtime_fini(struct xe_device *xe);
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bool xe_pm_runtime_suspended(struct xe_device *xe);
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int xe_pm_runtime_suspend(struct xe_device *xe);
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int xe_pm_runtime_resume(struct xe_device *xe);
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void xe_pm_runtime_get(struct xe_device *xe);
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int xe_pm_runtime_get_ioctl(struct xe_device *xe);
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void xe_pm_runtime_put(struct xe_device *xe);
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int xe_pm_runtime_get_if_active(struct xe_device *xe);
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bool xe_pm_runtime_get_if_in_use(struct xe_device *xe);
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void xe_pm_runtime_get_noresume(struct xe_device *xe);
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bool xe_pm_runtime_resume_and_get(struct xe_device *xe);
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void xe_pm_assert_unbounded_bridge(struct xe_device *xe);
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int xe_pm_set_vram_threshold(struct xe_device *xe, u32 threshold);
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void xe_pm_d3cold_allowed_toggle(struct xe_device *xe);
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struct task_struct *xe_pm_read_callback_task(struct xe_device *xe);
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#endif
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