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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ipa_power.h (1967B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2
      3/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
      4 * Copyright (C) 2018-2020 Linaro Ltd.
      5 */
      6#ifndef _IPA_POWER_H_
      7#define _IPA_POWER_H_
      8
      9struct device;
     10
     11struct ipa;
     12struct ipa_power_data;
     13
     14/* IPA device power management function block */
     15extern const struct dev_pm_ops ipa_pm_ops;
     16
     17/**
     18 * ipa_core_clock_rate() - Return the current IPA core clock rate
     19 * @ipa:	IPA structure
     20 *
     21 * Return: The current clock rate (in Hz), or 0.
     22 */
     23u32 ipa_core_clock_rate(struct ipa *ipa);
     24
     25/**
     26 * ipa_power_modem_queue_stop() - Possibly stop the modem netdev TX queue
     27 * @ipa:	IPA pointer
     28 */
     29void ipa_power_modem_queue_stop(struct ipa *ipa);
     30
     31/**
     32 * ipa_power_modem_queue_wake() - Possibly wake the modem netdev TX queue
     33 * @ipa:	IPA pointer
     34 */
     35void ipa_power_modem_queue_wake(struct ipa *ipa);
     36
     37/**
     38 * ipa_power_modem_queue_active() - Report modem netdev TX queue active
     39 * @ipa:	IPA pointer
     40 */
     41void ipa_power_modem_queue_active(struct ipa *ipa);
     42
     43/**
     44 * ipa_power_retention() - Control register retention on power collapse
     45 * @ipa:	IPA pointer
     46 * @enable:	Whether retention should be enabled or disabled
     47 */
     48void ipa_power_retention(struct ipa *ipa, bool enable);
     49
     50/**
     51 * ipa_power_setup() - Set up IPA power management
     52 * @ipa:	IPA pointer
     53 *
     54 * Return:	0 if successful, or a negative error code
     55 */
     56int ipa_power_setup(struct ipa *ipa);
     57
     58/**
     59 * ipa_power_teardown() - Inverse of ipa_power_setup()
     60 * @ipa:	IPA pointer
     61 */
     62void ipa_power_teardown(struct ipa *ipa);
     63
     64/**
     65 * ipa_power_init() - Initialize IPA power management
     66 * @dev:	IPA device
     67 * @data:	Clock configuration data
     68 *
     69 * Return:	A pointer to an ipa_power structure, or a pointer-coded error
     70 */
     71struct ipa_power *ipa_power_init(struct device *dev,
     72				 const struct ipa_power_data *data);
     73
     74/**
     75 * ipa_power_exit() - Inverse of ipa_power_init()
     76 * @power:	IPA power pointer
     77 */
     78void ipa_power_exit(struct ipa_power *power);
     79
     80#endif /* _IPA_POWER_H_ */