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/* Copyright 2018 SiFive, Inc */
/* SPDX-License-Identifier: Apache-2.0 */
#ifndef METAL__CACHE_H
#define METAL__CACHE_H
/*!
* @file cache.h
*
* @brief API for configuring caches
*/
struct metal_cache;
struct __metal_cache_vtable {
void (*init)(struct metal_cache *cache, int ways);
int (*get_enabled_ways)(struct metal_cache *cache);
int (*set_enabled_ways)(struct metal_cache *cache, int ways);
};
/*!
* @brief a handle for a cache
*/
struct metal_cache {
const struct __metal_cache_vtable *vtable;
};
/*!
* @brief Initialize a cache
* @param cache The handle for the cache to initialize
* @param ways The number of ways to enable
*
* Initializes a cache with the requested number of ways enabled.
*/
inline void metal_cache_init(struct metal_cache *cache, int ways) {
return cache->vtable->init(cache, ways);
}
/*!
* @brief Get the current number of enabled cache ways
* @param cache The handle for the cache
* @return The current number of enabled cache ways
*/
inline int metal_cache_get_enabled_ways(struct metal_cache *cache) {
return cache->vtable->get_enabled_ways(cache);
}
/*!
* @brief Enable the requested number of cache ways
* @param cache The handle for the cache
* @param ways The number of ways to enabled
* @return 0 if the ways are successfully enabled
*/
inline int metal_cache_set_enabled_ways(struct metal_cache *cache, int ways) {
return cache->vtable->set_enabled_ways(cache, ways);
}
#endif
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