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polyfractal 2016-12-30 18:23:32 -05:00
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component/common/mbed/targets/hal/rtl8195a/dma_api.c Normal file
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/* mbed Microcontroller Library
*******************************************************************************
* Copyright (c) 2014, Realtek
* All rights reserved.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************
*/
#include "dma_api.h"
#include "cmsis.h"
extern BOOL HalGdmaMemCpyInit(PHAL_GDMA_OBJ pHalGdmaObj);
extern VOID HalGdmaMemCpyDeInit(PHAL_GDMA_OBJ pHalGdmaObj);
extern VOID* HalGdmaMemCpy(PHAL_GDMA_OBJ pHalGdmaObj, void* pDest, void* pSrc, u32 len);
extern VOID HalGdmaMemAggr(PHAL_GDMA_OBJ pHalGdmaObj, PHAL_GDMA_BLOCK pHalGdmaBlock);
extern BOOL HalGdmaMemCpyAggrInit(PHAL_GDMA_OBJ pHalGdmaObj);
/**
* @brief Initial the GDMA
*
* @param dma_obj: the GDMA object
* handler: the callback function for a DMA transfer complete.
* id: the argument of the callback function.
* @return None
*
*/
void dma_memcpy_aggr_init(gdma_t *dma_obj, dma_irq_handler handler, uint32_t id)
{
dma_obj->gdma_obj.GdmaIrqHandle.IrqFun = (IRQ_FUN)handler;
dma_obj->gdma_obj.GdmaIrqHandle.Data = (u32)id;
dma_obj->gdma_allocated = HalGdmaMemCpyAggrInit(&(dma_obj->gdma_obj));
}
void dma_memcpy_init(gdma_t *dma_obj, dma_irq_handler handler, uint32_t id)
{
dma_obj->gdma_obj.GdmaIrqHandle.IrqFun = (IRQ_FUN)handler;
dma_obj->gdma_obj.GdmaIrqHandle.Data = (u32)id;
dma_obj->gdma_allocated = HalGdmaMemCpyInit(&(dma_obj->gdma_obj));
}
/**
* @brief De-Initial the GDMA
*
* @param dma_obj: the GDMA object
* @return None
*
*/
void dma_memcpy_deinit(gdma_t *dma_obj)
{
if (dma_obj->gdma_allocated) {
HalGdmaMemCpyDeInit(&(dma_obj->gdma_obj));
}
}
/**
* @brief To do a memory copy by DMA
*
* @param None
* @return None
*
*/
void dma_memcpy(gdma_t *dma_obj, void *dst, void* src, uint32_t len)
{
#if 0
if (!dma_obj->gdma_allocated) {
dma_irq_handler handler;
_memcpy(dst, src, len);
handler = dma_obj->GdmaIrqHandle.IrqFun;
handler(dma_obj->GdmaIrqHandle.Data);
}
#endif
HalGdmaMemCpy(&(dma_obj->gdma_obj), dst, src, len);
}
void dma_memcpy_aggr(gdma_t *dma_obj, PHAL_GDMA_BLOCK block_info)
{
HalGdmaMemAggr(&(dma_obj->gdma_obj), block_info);
}