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https://gitee.com/Vancouver2017/luban-lite-t3e-pro.git
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132 lines
2.3 KiB
C
132 lines
2.3 KiB
C
/*
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* Copyright (c) 2023, Artinchip Technology Co., Ltd
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Wu Dehuang <dehuang.wu@artinchip.com>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <aic_core.h>
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#include <aic_common.h>
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#include <aic_errno.h>
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#include <log_buf.h>
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#define AIC_LOG_MAGIC 0x4C434941
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struct log_buffer {
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int magic;
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int istart;
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int icurr;
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int buf_size;
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char buf[];
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};
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#ifdef AICUPG_LOG_BUFFER_SUPPORT
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#define LOG_BUF_ADDR AICUPG_LOG_BUFFER_ADDR
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#define LOG_BUF_SIZE AICUPG_LOG_BUFFER_SIZE
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#else
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#define LOG_BUF_ADDR 0
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#define LOG_BUF_SIZE 0
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#endif
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int log_buf_init(void)
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{
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#ifdef AICUPG_LOG_BUFFER_SUPPORT
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struct log_buffer *log;
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void *buff;
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int size;
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buff = (void *)LOG_BUF_ADDR;
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size = (int)LOG_BUF_SIZE;
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if (!buff || (size < sizeof(*log)))
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return -1;
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log = buff;
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if (log->magic == AIC_LOG_MAGIC)
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return 0;
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log->istart = 0;
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log->icurr = 0;
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log->buf_size = size - sizeof(*log);
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log->magic = AIC_LOG_MAGIC;
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#endif
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return 0;
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}
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int log_buf_get_len(void)
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{
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#ifdef AICUPG_LOG_BUFFER_SUPPORT
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struct log_buffer *log = (void *)LOG_BUF_ADDR;
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if (!log)
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return 0;
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return (log->icurr + log->buf_size - log->istart) % log->buf_size;
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#endif
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return 0;
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}
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int log_buf_write(char *in, int len)
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{
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#ifdef AICUPG_LOG_BUFFER_SUPPORT
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struct log_buffer *log = (void *)LOG_BUF_ADDR;
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int dolen, freelen;
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char *ps;
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if (!log)
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return 0;
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if (log->magic != AIC_LOG_MAGIC)
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return 0;
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dolen = len;
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freelen = log->buf_size - 1 - log_buf_get_len();
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if (freelen == 0)
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return 0;
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if (dolen > freelen)
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dolen = freelen;
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len = dolen;
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ps = in;
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while (dolen) {
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log->buf[log->icurr % log->buf_size] = *ps;
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log->icurr = (log->icurr + 1) % log->buf_size;
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dolen--;
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ps++;
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}
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return len;
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#endif
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return 0;
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}
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int log_buf_read(char *out, int len)
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{
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#ifdef AICUPG_LOG_BUFFER_SUPPORT
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struct log_buffer *log = (void *)LOG_BUF_ADDR;
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int dolen, loglen;
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char *pd;
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if (!log)
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return 0;
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if (log->magic != AIC_LOG_MAGIC)
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return 0;
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dolen = len;
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loglen = log_buf_get_len();
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if (dolen > loglen)
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dolen = loglen;
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len = dolen;
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pd = out;
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while (dolen) {
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*pd = log->buf[log->istart % log->buf_size];
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log->istart = (log->istart + 1) % log->buf_size;
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dolen--;
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pd++;
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}
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return len;
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#endif
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return 0;
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}
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