164 lines
6.1 KiB
C
164 lines
6.1 KiB
C
/****************************************************************************
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* arch/arm/src/lc823450/lc823450_dma.h
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*
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* Copyright (C) 2014-2017 Sony Corporation. All rights reserved.
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* Author: Masatoshi Tateishi <Masatoshi.Tateishi@jp.sony.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_LC823450_LC823450_DMA_H
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#define __ARCH_ARM_SRC_LC823450_LC823450_DMA_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <arch/irq.h>
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#include "chip.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define LC823450_DMA_ITC (1 << 31)
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#define LC823450_DMA_SRCWIDTH_BYTE (0 << 18)
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#define LC823450_DMA_SRCWIDTH_HWORD (1 << 18)
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#define LC823450_DMA_SRCWIDTH_WORD (2 << 18)
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#define LC823450_DMA_DSTWIDTH_BYTE (0 << 21)
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#define LC823450_DMA_DSTWIDTH_HWORD (1 << 21)
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#define LC823450_DMA_DSTWIDTH_WORD (2 << 21)
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#define LC823450_DMA_SRCINC (1 << 26)
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#define LC823450_DMA_DSTINC (1 << 27)
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#define LC823450_DMA_SBS_SHIFT 12
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#define LC823450_DMA_DBS_SHIFT 15
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#define LC823450_DMA_BS_1 0
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#define LC823450_DMA_BS_4 1
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#define LC823450_DMA_BS_8 2
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#define LC823450_DMA_BS_16 3
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#define LC823450_DMA_BS_32 4
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#define LC823450_DMA_BS_64 5
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#define LC823450_DMA_BS_128 6
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#define LC823450_DMA_BS_256 7
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#define LC823450_DMA_TRANSSIZE_MASK (0xfff << 0)
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#define LC823450_DMA_MAX_TRANSSIZE 0xff0
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/* HighPriority */
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#define DMA_CHANNEL_SIOTX 0
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#define DMA_CHANNEL_UART1RX 1
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#define DMA_CHANNEL_UART1TX 2
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#define DMA_CHANNEL_USBDEV 3
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#define DMA_CHANNEL_AUDIOWR 4
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#define DMA_CHANNEL_AUDIORD 5
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#if 0
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#define DMA_CHANNEL_??? 6
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#endif
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#define DMA_CHANNEL_VIRTUAL 7
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#define DMA_CHANNEL_NUM 8
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#define DMA_REQUEST_UART0RX 0
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#define DMA_REQUEST_UART0TX 1
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#define DMA_REQUEST_UART1RX 2
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#define DMA_REQUEST_UART1TX 3
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#define DMA_REQUEST_UART2RX 4
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#define DMA_REQUEST_UART2TX 5
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#define DMA_REQUEST_SIORX 6
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#define DMA_REQUEST_SIOTX 7
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#define DMA_REQUEST_AUDIOBUF0 8
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#define DMA_REQUEST_AUDIOBUF1 9
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#define DMA_REQUEST_AUDIOBUF2 10
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#define DMA_REQUEST_AUDIOBUF3 11
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#define DMA_REQUEST_AUDIOBUF4 12
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#define DMA_REQUEST_AUDIOBUF5 13
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#define DMA_REQUEST_AUDIOBUF6 14
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#define DMA_REQUEST_AUDIOBUF7 15
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#define DMA_REQUEST_USBDEV 22
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct lc823450_dma_llist
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{
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uint32_t srcaddr;
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uint32_t dstaddr;
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uint32_t nextlli;
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uint32_t ctrl;
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};
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typedef void *DMA_HANDLE;
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typedef void (*dma_callback_t)(DMA_HANDLE handle, void *arg, int result);
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void lc823450_dmaconfigure(uint8_t dmarequest, bool alternate);
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DMA_HANDLE lc823450_dmachannel(int ch);
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void lc823450_dmafree(DMA_HANDLE handle);
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void lc823450_dmarequest(DMA_HANDLE handle, uint8_t dmarequest);
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int lc823450_dmasetup(DMA_HANDLE handle, uint32_t control,
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uint32_t srcaddr, uint32_t destaddr, size_t nxfrs);
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int lc823450_dmallsetup(DMA_HANDLE handle, uint32_t control,
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uint32_t srcaddr, uint32_t destaddr,
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size_t nxfrs, uint32_t llist);
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void lc823450_dmareauest_dir(DMA_HANDLE handle, uint8_t dmarequest,
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int m2p);
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int lc823450_dmastart(DMA_HANDLE handle, dma_callback_t callback,
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void *arg);
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void lc823450_dmastop(DMA_HANDLE handle);
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int lc823450_dmaremain(DMA_HANDLE handle);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ARCH_ARM_SRC_LC823450_LC823450_DMA_H */
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