1 /* 2 * udebug - debug ring buffer library 3 * 4 * Copyright (C) 2023 Felix Fietkau <nbd@nbd.name> 5 * 6 * Permission to use, copy, modify, and/or distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 #ifndef __UDEBUG_UTIL_H 19 #define __UDEBUG_UTIL_H 20 21 #include "blobmsg.h" 22 #include "udebug.h" 23 #include "udebug-proto.h" 24 25 #define UDEBUG_TIMEOUT 1000 26 27 __hidden int udebug_buf_open(struct udebug_buf *buf, int fd, uint32_t ring_size, uint32_t data_size); 28 __hidden struct udebug_client_msg * 29 udebug_send_and_wait(struct udebug *ctx, struct udebug_client_msg *msg, int *rfd); 30 31 static inline int32_t u32_sub(uint32_t a, uint32_t b) 32 { 33 return a - b; 34 } 35 36 static inline int32_t u32_max(uint32_t a, uint32_t b) 37 { 38 return u32_sub(a, b) > 0 ? a : b; 39 } 40 41 static inline void u32_set(void *ptr, uint32_t val) 42 { 43 volatile uint32_t *v = ptr; 44 *v = val; 45 } 46 47 static inline uint32_t u32_get(void *ptr) 48 { 49 volatile uint32_t *v = ptr; 50 return *v; 51 } 52 53 #endif 54
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