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/*
* This file is part of FH8620 BSP for RT-Thread distribution.
*
* Copyright (c) 2016 Shanghai Fullhan Microelectronics Co., Ltd.
* All rights reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Visit http://www.fullhan.com to get contact with Fullhan.
*
* Change Logs:
* Date Author Notes
*/
/*****************************************************************************
* Include Section
* add all #include here
*****************************************************************************/
#include "dma_mem.h"
#ifdef RT_USING_DMA_MEM
/*****************************************************************************
* Define section
* add all #define here
*****************************************************************************/
//#define FH_TEST_DMA_MEM
/****************************************************************************
* ADT section
* add definition of user defined Data Type that only be used in this file here
***************************************************************************/
/******************************************************************************
* Function prototype section
* add prototypes for all functions called by this file,execepting those
* declared in header file
*****************************************************************************/
/*****************************************************************************
* Global variables section - Exported
* add declaration of global variables that will be exported here
* e.g.
* int8_t foo;
****************************************************************************/
/*****************************************************************************
* static fun;
*****************************************************************************/
/*****************************************************************************
* Global variables section - Local
* define global variables(will be refered only in this file) here,
* static keyword should be used to limit scope of local variable to this file
* e.g.
* static uint8_t ufoo;
*****************************************************************************/
static struct rt_memheap dma_heap = {0};
/* function body */
/*****************************************************************************
* Description:
* add funtion description here
* Parameters:
* description for each argument, new argument starts at new line
* Return:
* what does this function returned?
*****************************************************************************/
rt_err_t fh_dma_mem_init(rt_uint32_t *mem_start,rt_uint32_t size){
return rt_memheap_init(&dma_heap,"dma_heap",mem_start,size);
}
void *fh_dma_mem_malloc(rt_uint32_t size){
return rt_memheap_alloc(&dma_heap, size);
}
void fh_dma_mem_free(void *ptr){
rt_memheap_free(ptr);
}
#ifdef FH_TEST_DMA_MEM
int dma_mem_debug(void *ptr){
//rt_memheap_free(ptr);
rt_kprintf("dma mem start 0x%08x\n",(rt_uint32_t)dma_heap.start_addr);
rt_kprintf("dma mem total size 0x%08x\n",dma_heap.pool_size);
rt_kprintf("dma mem left size 0x%08x\n",dma_heap.available_size);
rt_kprintf("dma mem max use size 0x%08x\n",dma_heap.max_used_size);
return 0;
}
#endif
#ifdef RT_USING_FINSH
#include <finsh.h>
#ifdef FH_TEST_DMA_MEM
FINSH_FUNCTION_EXPORT(dma_mem_debug, dma_start & left size & max_use);
#endif
#endif
#endif
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