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|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2023-2024 Linaro Ltd.
*/
#ifndef __QCOM_TZMEM_H
#define __QCOM_TZMEM_H
#include <linux/cleanup.h>
#include <linux/gfp.h>
#include <linux/types.h>
struct device;
struct qcom_tzmem_pool;
/**
* enum qcom_tzmem_policy - Policy for pool growth.
*/
enum qcom_tzmem_policy {
/**< Static pool, never grow above initial size. */
QCOM_TZMEM_POLICY_STATIC = 1,
/**< When out of memory, add increment * current size of memory. */
QCOM_TZMEM_POLICY_MULTIPLIER,
/**< When out of memory add as much as is needed until max_size. */
QCOM_TZMEM_POLICY_ON_DEMAND,
};
/**
* struct qcom_tzmem_pool_config - TZ memory pool configuration.
* @initial_size: Number of bytes to allocate for the pool during its creation.
* @policy: Pool size growth policy.
* @increment: Used with policies that allow pool growth.
* @max_size: Size above which the pool will never grow.
*/
struct qcom_tzmem_pool_config {
size_t initial_size;
enum qcom_tzmem_policy policy;
size_t increment;
size_t max_size;
};
struct qcom_tzmem_pool *
qcom_tzmem_pool_new(const struct qcom_tzmem_pool_config *config);
void qcom_tzmem_pool_free(struct qcom_tzmem_pool *pool);
struct qcom_tzmem_pool *
devm_qcom_tzmem_pool_new(struct device *dev,
const struct qcom_tzmem_pool_config *config);
void *qcom_tzmem_alloc(struct qcom_tzmem_pool *pool, size_t size, gfp_t gfp);
void qcom_tzmem_free(void *ptr);
DEFINE_FREE(qcom_tzmem, void *, if (_T) qcom_tzmem_free(_T))
phys_addr_t qcom_tzmem_to_phys(void *ptr);
#endif /* __QCOM_TZMEM */