224 lines
7.4 KiB
C
224 lines
7.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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*
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* (C) COPYRIGHT 2014-2023 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can access it online at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*
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*/
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/**
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* DOC: HW access power manager common APIs
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*/
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#ifndef _KBASE_HWACCESS_PM_H_
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#define _KBASE_HWACCESS_PM_H_
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#include <linux/types.h>
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#include <linux/atomic.h>
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/* Forward definition - see mali_kbase.h */
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struct kbase_device;
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struct kbase_pm_policy;
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struct kbase_pm_ca_policy;
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/* Functions common to all HW access backends */
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/**
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* kbase_hwaccess_pm_init - Initialize the power management framework.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*
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* This function must be called only when a kbase device is initialized and
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* must be called before any other power management function.
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*
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* Return: 0 if the power management framework was successfully initialized.
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*/
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int kbase_hwaccess_pm_init(struct kbase_device *kbdev);
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/**
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* kbase_hwaccess_pm_term - Terminate the power management framework.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*
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* No power management functions may be called after this
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*/
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void kbase_hwaccess_pm_term(struct kbase_device *kbdev);
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/**
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* kbase_hwaccess_pm_powerup - Power up the GPU.
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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* @flags: Flags to pass on to kbase_pm_init_hw
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*
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* Power up GPU after all modules have been initialized and interrupt handlers
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* installed.
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*
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* Return: 0 if powerup was successful.
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*/
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int kbase_hwaccess_pm_powerup(struct kbase_device *kbdev, unsigned int flags);
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/**
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* kbase_hwaccess_pm_halt - Halt the power management framework.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*
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* Should ensure that no new interrupts are generated, but allow any currently
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* running interrupt handlers to complete successfully. The GPU is forced off by
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* the time this function returns, regardless of whether or not the active power
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* policy asks for the GPU to be powered off.
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*/
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void kbase_hwaccess_pm_halt(struct kbase_device *kbdev);
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/**
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* kbase_hwaccess_pm_suspend - Perform any backend-specific actions to suspend the GPU
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*
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* Return: 0 if suspend was successful.
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*/
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int kbase_hwaccess_pm_suspend(struct kbase_device *kbdev);
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/**
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* kbase_hwaccess_pm_resume - Perform any backend-specific actions to resume the GPU
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* from a suspend
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*/
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void kbase_hwaccess_pm_resume(struct kbase_device *kbdev);
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/**
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* kbase_hwaccess_pm_gpu_active - Perform any required actions for activating the GPU.
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* Called when the first context goes active.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*/
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void kbase_hwaccess_pm_gpu_active(struct kbase_device *kbdev);
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/**
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* kbase_hwaccess_pm_gpu_idle - Perform any required actions for idling the GPU.
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* Called when the last context goes idle.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*/
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void kbase_hwaccess_pm_gpu_idle(struct kbase_device *kbdev);
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#if MALI_USE_CSF
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/**
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* kbase_pm_set_debug_core_mask - Set the debug core mask.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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* @new_core_mask: The core mask to use
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*
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* This determines which cores the power manager is allowed to use.
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*/
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void kbase_pm_set_debug_core_mask(struct kbase_device *kbdev, u64 new_core_mask);
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#else
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/**
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* kbase_pm_set_debug_core_mask - Set the debug core mask.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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* @new_core_mask: The core mask to use, as an array where each element refers
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* to a job slot.
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* @new_core_mask_size: Number of elements in the core mask array.
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*
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* This determines which cores the power manager is allowed to use.
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*/
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void kbase_pm_set_debug_core_mask(struct kbase_device *kbdev, u64 *new_core_mask,
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size_t new_core_mask_size);
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#endif /* MALI_USE_CSF */
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/**
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* kbase_pm_ca_get_policy - Get the current policy.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*
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* Returns the policy that is currently active.
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*
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* Return: The current policy
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*/
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const struct kbase_pm_ca_policy *kbase_pm_ca_get_policy(struct kbase_device *kbdev);
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/**
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* kbase_pm_ca_set_policy - Change the policy to the one specified.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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* @policy: The policy to change to (valid pointer returned from
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* @ref kbase_pm_ca_list_policies)
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*/
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void kbase_pm_ca_set_policy(struct kbase_device *kbdev, const struct kbase_pm_ca_policy *policy);
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/**
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* kbase_pm_ca_list_policies - Retrieve a static list of the available policies.
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*
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* @policies: An array pointer to take the list of policies. This may be NULL.
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* The contents of this array must not be modified.
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*
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* Return: The number of policies
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*/
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int kbase_pm_ca_list_policies(const struct kbase_pm_ca_policy *const **policies);
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/**
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* kbase_pm_get_policy - Get the current policy.
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*
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* @kbdev: The kbase device structure for the device (must be a valid pointer)
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*
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* Returns the policy that is currently active.
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*
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* Return: The current policy
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*/
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const struct kbase_pm_policy *kbase_pm_get_policy(struct kbase_device *kbdev);
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/**
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* kbase_pm_set_policy - Change the policy to the one specified.
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*
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* @kbdev: The kbase device structure for the device (must be a valid
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* pointer)
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* @policy: The policy to change to (valid pointer returned from
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* @ref kbase_pm_list_policies)
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*/
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void kbase_pm_set_policy(struct kbase_device *kbdev, const struct kbase_pm_policy *policy);
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/**
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* kbase_pm_list_policies - Retrieve a static list of the available policies.
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*
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* @kbdev: The kbase device structure for the device.
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* @list: An array pointer to take the list of policies. This may be NULL.
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* The contents of this array must not be modified.
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*
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* Return: The number of policies
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*/
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size_t kbase_pm_list_policies(struct kbase_device *kbdev,
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const struct kbase_pm_policy *const **list);
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/**
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* kbase_pm_protected_mode_enable() - Enable protected mode
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*
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* @kbdev: Address of the instance of a GPU platform device.
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*
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* Return: Zero on success or an error code
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*/
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int kbase_pm_protected_mode_enable(struct kbase_device *kbdev);
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/**
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* kbase_pm_protected_mode_disable() - Disable protected mode
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*
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* @kbdev: Address of the instance of a GPU platform device.
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*
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* Return: Zero on success or an error code
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*/
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int kbase_pm_protected_mode_disable(struct kbase_device *kbdev);
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#endif /* _KBASE_HWACCESS_PM_H_ */
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