diff options
Diffstat (limited to 'src/svm/fifo_segment.h')
| -rw-r--r-- | src/svm/fifo_segment.h | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/src/svm/fifo_segment.h b/src/svm/fifo_segment.h index cc0ff3adf3a..6ff538fcc07 100644 --- a/src/svm/fifo_segment.h +++ b/src/svm/fifo_segment.h @@ -38,10 +38,11 @@ typedef enum fifo_segment_flags_ typedef struct { - svm_fifo_t *fifos; /**< Linked list of active RX fifos */ - svm_fifo_t **free_fifos; /**< Freelists, by fifo size */ - u32 n_active_fifos; /**< Number of active fifos */ - u8 flags; /**< Segment flags */ + svm_fifo_t *fifos; /**< Linked list of active RX fifos */ + svm_fifo_t **free_fifos; /**< Freelists by fifo size */ + svm_fifo_chunk_t **free_chunks; /**< Freelists by chunk size */ + u32 n_active_fifos; /**< Number of active fifos */ + u8 flags; /**< Segment flags */ } fifo_segment_header_t; typedef struct @@ -82,7 +83,7 @@ void fifo_segment_info (fifo_segment_t * seg, char **address, size_t * size); /** * Allocate fifo in fifo segment * - * @param fs fifo segment + * @param fs fifo segment for fifo * @param data_bytes size of default fifo chunk in bytes * @param ftype fifo type @ref fifo_segment_ftype_t * @return new fifo or 0 if alloc failed @@ -94,7 +95,7 @@ svm_fifo_t *fifo_segment_alloc_fifo (fifo_segment_t * fs, /** * Free fifo allocated in fifo segment * - * @param fs fifo segment + * @param fs fifo segment for fifo * @param f fifo to be freed */ void fifo_segment_free_fifo (fifo_segment_t * fs, svm_fifo_t * f); @@ -107,7 +108,7 @@ void fifo_segment_free_fifo (fifo_segment_t * fs, svm_fifo_t * f); * is hit, the number of fifo pairs requested is updated by subtracting the * number of fifos that have been successfully allocated. * - * @param fs fifo segment + * @param fs fifo segment for fifo * @param rx_fifo_size data size of rx fifos * @param tx_fifo_size data size of tx fifos * @param n_fifo_pairs number of pairs requested. Prior to returning, this @@ -117,10 +118,28 @@ void fifo_segment_preallocate_fifo_pairs (fifo_segment_t * fs, u32 rx_fifo_size, u32 tx_fifo_size, u32 * n_fifo_pairs); +/** + * Grow fifo size by adding an additional chunk of memory + * + * @param fs fifo segment for fifo + * @param f fifo to be grown + * @param chunk_size number of bytes to be added to fifo + * @return 0 on success or a negative number otherwise + */ +int fifo_segment_grow_fifo (fifo_segment_t * fs, svm_fifo_t * f, + u32 chunk_size); u8 fifo_segment_has_fifos (fifo_segment_t * fs); svm_fifo_t *fifo_segment_get_fifo_list (fifo_segment_t * fs); u32 fifo_segment_num_fifos (fifo_segment_t * fs); u32 fifo_segment_num_free_fifos (fifo_segment_t * fs, u32 fifo_size_in_bytes); +/** + * Find number of free chunks of given size + * + * @param fs fifo segment + * @param size chunk size of interest or ~0 if all should be counted + * @return number of chunks of given size + */ +u32 fifo_segment_num_free_chunks (fifo_segment_t * fs, u32 size); void fifo_segment_main_init (fifo_segment_main_t * sm, u64 baseva, u32 timeout_in_seconds); |