1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Gerry Hamel, geh@ti.com, Texas Instruments
10 typedef struct circbuf {
11 unsigned int size; /* current number of bytes held */
12 unsigned int totalsize; /* number of bytes allocated */
14 char *top; /* pointer to current buffer start */
15 char *tail; /* pointer to space for next element */
17 char *data; /* all data */
18 char *end; /* end of data buffer */
21 int buf_init (circbuf_t * buf, unsigned int size);
22 int buf_free (circbuf_t * buf);
23 int buf_pop (circbuf_t * buf, char *dest, unsigned int len);
24 int buf_push (circbuf_t * buf, const char *src, unsigned int len);