cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pm_helpers.h (1569B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/* Copyright (C) 2019 Linaro Ltd. */
      3#ifndef __VENUS_PM_HELPERS_H__
      4#define __VENUS_PM_HELPERS_H__
      5
      6struct device;
      7struct venus_core;
      8
      9#define POWER_ON	1
     10#define POWER_OFF	0
     11
     12struct venus_pm_ops {
     13	int (*core_get)(struct venus_core *core);
     14	void (*core_put)(struct venus_core *core);
     15	int (*core_power)(struct venus_core *core, int on);
     16
     17	int (*vdec_get)(struct device *dev);
     18	void (*vdec_put)(struct device *dev);
     19	int (*vdec_power)(struct device *dev, int on);
     20
     21	int (*venc_get)(struct device *dev);
     22	void (*venc_put)(struct device *dev);
     23	int (*venc_power)(struct device *dev, int on);
     24
     25	int (*coreid_power)(struct venus_inst *inst, int on);
     26
     27	int (*load_scale)(struct venus_inst *inst);
     28};
     29
     30const struct venus_pm_ops *venus_pm_get(enum hfi_version version);
     31
     32static inline int venus_pm_load_scale(struct venus_inst *inst)
     33{
     34	struct venus_core *core = inst->core;
     35
     36	if (!core->pm_ops || !core->pm_ops->load_scale)
     37		return 0;
     38
     39	return core->pm_ops->load_scale(inst);
     40}
     41
     42static inline int venus_pm_acquire_core(struct venus_inst *inst)
     43{
     44	struct venus_core *core = inst->core;
     45	const struct venus_pm_ops *pm_ops = core->pm_ops;
     46	int ret = 0;
     47
     48	if (pm_ops && pm_ops->coreid_power)
     49		ret = pm_ops->coreid_power(inst, POWER_ON);
     50
     51	return ret;
     52}
     53
     54static inline int venus_pm_release_core(struct venus_inst *inst)
     55{
     56	struct venus_core *core = inst->core;
     57	const struct venus_pm_ops *pm_ops = core->pm_ops;
     58	int ret = 0;
     59
     60	if (pm_ops && pm_ops->coreid_power)
     61		ret = pm_ops->coreid_power(inst, POWER_OFF);
     62
     63	return ret;
     64}
     65
     66#endif