| /* 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 |
