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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2025 SiFive Inc.
*/
#ifndef __CACHE_H__
#define __CACHE_H__
#include <sbi/sbi_list.h>
#include <sbi/sbi_types.h>
#define CACHE_NAME_LEN 32
struct cache_device;
struct cache_ops {
/** Warm init **/
int (*warm_init)(struct cache_device *dev);
/** Flush entire cache **/
int (*cache_flush_all)(struct cache_device *dev);
};
struct cache_device {
/** Name of the device **/
char name[CACHE_NAME_LEN];
/** List node for search **/
struct sbi_dlist node;
/** Point to the next level cache **/
struct cache_device *next;
/** Cache Management Operations **/
struct cache_ops *ops;
/** CPU private cache **/
bool cpu_private;
/** The unique id of this cache device **/
u32 id;
};
/**
* Find a registered cache device
*
* @param id unique ID of the cache device
*
* @return the cache device or NULL
*/
struct cache_device *cache_find(u32 id);
/**
* Register a cache device
*
* cache_device->id must be initialized already and must not change during the life
* of the cache_device object.
*
* @param dev the cache device to register
*
* @return 0 on success, or a negative error code on failure
*/
int cache_add(struct cache_device *dev);
/**
* Flush the entire cache
*
* @param dev the cache to flush
*
* @return 0 on success, or a negative error code on failure
*/
int cache_flush_all(struct cache_device *dev);
#endif
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