#include <stdint.h>\r
#include <stdbool.h>\r
\r
-/**@brief Single block descriptor.*/\r
-struct ext4_block {\r
- /**@brief Dirty flag.*/\r
- bool dirty;\r
+/**@brief Single block descriptor.*/\r
+struct ext4_block {\r
+ /**@brief Dirty flag.*/\r
+ bool dirty;\r
\r
- /**@brief Logical block ID*/\r
- uint64_t lb_id;\r
+ /**@brief Logical block ID*/\r
+ uint64_t lb_id;\r
\r
/**@brief Cache id*/\r
- uint32_t cache_id;\r
+ uint32_t cache_id;\r
\r
- /**@brief Data buffer.*/\r
- uint8_t *data;\r
+ /**@brief Data buffer.*/\r
+ uint8_t *data;\r
};\r
\r
+/**@brief Block cache descriptor.*/\r
+struct ext4_bcache {\r
\r
-/**@brief Block cache descriptor.*/\r
-struct ext4_bcache {\r
+ /**@brief Item count in block cache*/\r
+ uint32_t cnt;\r
\r
- /**@brief Item count in block cache*/\r
- uint32_t cnt;\r
+ /**@brief Item size in block cache*/\r
+ uint32_t itemsize;\r
\r
- /**@brief Item size in block cache*/\r
- uint32_t itemsize;\r
+ /**@brief Last recently used counter.*/\r
+ uint32_t lru_ctr;\r
\r
- /**@brief Last recently used counter.*/\r
- uint32_t lru_ctr;\r
+ /**@brief Reference count table (cnt).*/\r
+ uint32_t refctr[CONFIG_BLOCK_DEV_CACHE_SIZE];\r
\r
- /**@brief Reference count table (cnt).*/\r
- uint32_t *refctr;\r
+ /**@brief Last recently used ID table (cnt)*/\r
+ uint32_t lru_id[CONFIG_BLOCK_DEV_CACHE_SIZE];\r
\r
- /**@brief Last recently used ID table (cnt)*/\r
- uint32_t *lru_id;\r
+ /**@brief Writeback free delay mode table (cnt)*/\r
+ uint8_t free_delay[CONFIG_BLOCK_DEV_CACHE_SIZE];\r
\r
- /**@brief Free delay mode table (cnt)*/\r
- uint8_t *free_delay;\r
+ /**@brief Logical block table (cnt).*/\r
+ uint64_t lba[CONFIG_BLOCK_DEV_CACHE_SIZE];\r
\r
- /**@brief Logical block table (cnt).*/\r
- uint64_t *lba;\r
+ /**@brief Dirty mark (cnt).*/\r
+ bool dirty[CONFIG_BLOCK_DEV_CACHE_SIZE];\r
\r
- /**@brief Cache data buffers (cnt * itemsize)*/\r
- uint8_t *data;\r
+ /**@brief Cache data buffers (cnt * itemsize)*/\r
+ uint8_t *data;\r
\r
- /**@brief Currently referenced datablocks*/\r
- uint32_t ref_blocks;\r
-\r
- /**@brief Maximum referenced datablocks*/\r
- uint32_t max_ref_blocks;\r
+ /**@brief Currently referenced datablocks*/\r
+ uint32_t ref_blocks;\r
\r
+ /**@brief Maximum referenced datablocks*/\r
+ uint32_t max_ref_blocks;\r
};\r
\r
-/**@brief Static initializer of block cache structure.*/\r
-#define EXT4_BCACHE_STATIC_INSTANCE(__name, __cnt, __itemsize) \\r
- static uint32_t __name##_refctr[(__cnt)]; \\r
- static uint32_t __name##_lru_id[(__cnt)]; \\r
- static uint8_t __name##_free_delay[(__cnt)]; \\r
- static uint64_t __name##_lba[(__cnt)]; \\r
- static uint8_t __name##_data[(__cnt) * (__itemsize)]; \\r
- static struct ext4_bcache __name = { \\r
- .cnt = __cnt, \\r
- .itemsize = __itemsize, \\r
- .lru_ctr = 0, \\r
- .refctr = __name##_refctr, \\r
- .lru_id = __name##_lru_id, \\r
- .lba = __name##_lba, \\r
- .free_delay= __name##_free_delay, \\r
- .data = __name##_data, \\r
- }\r
-\r
-\r
-/**@brief Dynamic initialization of block cache.\r
- * @param bc block cache descriptor\r
- * @param cnt items count in block cache\r
- * @param itemsize single item size (in bytes)\r
- * @return standard error code*/\r
-int ext4_bcache_init_dynamic(struct ext4_bcache *bc, uint32_t cnt,\r
- uint32_t itemsize);\r
-\r
-/**@brief Dynamic de-initialization of block cache.\r
- * @param bc block cache descriptor\r
- * @return standard error code*/\r
-int ext4_bcache_fini_dynamic(struct ext4_bcache *bc);\r
-\r
-/**@brief Allocate block from block cache memory.\r
+/**@brief Static initializer of block cache structure.*/\r
+#define EXT4_BCACHE_STATIC_INSTANCE(__name, __cnt, __itemsize) \\r
+ static uint8_t __name##_data[(__cnt) * (__itemsize)]; \\r
+ static struct ext4_bcache __name = { \\r
+ .cnt = __cnt, \\r
+ .itemsize = __itemsize, \\r
+ .lru_ctr = 0, \\r
+ .data = __name##_data, \\r
+ }\r
+\r
+/**@brief Dynamic initialization of block cache.\r
+ * @param bc block cache descriptor\r
+ * @param cnt items count in block cache\r
+ * @param itemsize single item size (in bytes)\r
+ * @return standard error code*/\r
+int ext4_bcache_init_dynamic(struct ext4_bcache *bc, uint32_t cnt,\r
+ uint32_t itemsize);\r
+\r
+/**@brief Dynamic de-initialization of block cache.\r
+ * @param bc block cache descriptor\r
+ * @return standard error code*/\r
+int ext4_bcache_fini_dynamic(struct ext4_bcache *bc);\r
+\r
+/**@brief Allocate block from block cache memory.\r
* Unreferenced block allocation is based on LRU\r
* (Last Recently Used) algorithm.\r
- * @param bc block cache descriptor\r
- * @param b block to alloc\r
- * @param is_new block is new (needs to be read)\r
+ * @param bc block cache descriptor\r
+ * @param b block to alloc\r
+ * @param is_new block is new (needs to be read)\r
* @return standard error code*/\r
int ext4_bcache_alloc(struct ext4_bcache *bc, struct ext4_block *b,\r
- bool *is_new);\r
+ bool *is_new);\r
\r
-/**@brief Free block from cache memory (decrement reference counter).\r
- * @param bc block cache descriptor\r
- * @param b block to free\r
+/**@brief Free block from cache memory (decrement reference counter).\r
+ * @param bc block cache descriptor\r
+ * @param b block to free\r
+ * @param cache writeback mode\r
* @return standard error code*/\r
-int ext4_bcache_free (struct ext4_bcache *bc, struct ext4_block *b,\r
- uint8_t free_delay);\r
-\r
+int ext4_bcache_free(struct ext4_bcache *bc, struct ext4_block *b,\r
+ uint8_t free_delay);\r
\r
-/**@brief Return a full status of block cache.\r
- * @param bc block cache descriptor\r
- * @return full status*/\r
+/**@brief Return a full status of block cache.\r
+ * @param bc block cache descriptor\r
+ * @return full status*/\r
bool ext4_bcache_is_full(struct ext4_bcache *bc);\r
\r
#endif /* EXT4_BCACHE_H_ */\r
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