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