0cb162a76b
Based on code originally written by Amaury Pouly (g#1789, g#1791, g#1527) but rebased and heavily updated. Change-Id: Ic794abb5e8d89feb4b88fc3abe854270fb28db70
102 lines
3.7 KiB
C
102 lines
3.7 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2016 by Roman Stolyarov
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "dma-target.h"
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#define MDMA_CHANNEL 0
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void memset_dma(void *target, int c, size_t len, unsigned int bits)
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{
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unsigned int d;
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unsigned char *dp;
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if(((unsigned int)target < 0xa0000000) && len)
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discard_dcache_range(target, len);
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dp = (unsigned char *)((unsigned int)(&d) | 0xa0000000);
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*(dp + 0) = c;
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*(dp + 1) = c;
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*(dp + 2) = c;
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*(dp + 3) = c;
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REG_MDMAC_DCCSR(MDMA_CHANNEL) = 0;
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REG_MDMAC_DSAR(MDMA_CHANNEL) = PHYSADDR((unsigned long)dp);
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REG_MDMAC_DTAR(MDMA_CHANNEL) = PHYSADDR((unsigned long)target);
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REG_MDMAC_DRSR(MDMA_CHANNEL) = DMAC_DRSR_RS_AUTO;
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switch (bits)
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{
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case 8:
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REG_MDMAC_DTCR(MDMA_CHANNEL) = len;
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REG_MDMAC_DCMD(MDMA_CHANNEL) = DMAC_DCMD_DAI | DMAC_DCMD_SWDH_8 | DMAC_DCMD_DWDH_8 | DMAC_DCMD_DS_8BIT;
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break;
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case 16:
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REG_MDMAC_DTCR(MDMA_CHANNEL) = len / 2;
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REG_MDMAC_DCMD(MDMA_CHANNEL) = DMAC_DCMD_DAI | DMAC_DCMD_SWDH_16 | DMAC_DCMD_DWDH_16 | DMAC_DCMD_DS_16BIT;
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break;
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case 32:
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REG_MDMAC_DTCR(MDMA_CHANNEL) = len / 4;
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REG_MDMAC_DCMD(MDMA_CHANNEL) = DMAC_DCMD_DAI | DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | DMAC_DCMD_DS_32BIT;
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break;
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default:
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return;
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}
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REG_MDMAC_DCCSR(MDMA_CHANNEL) = DMAC_DCCSR_EN | DMAC_DCCSR_NDES;
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while (REG_MDMAC_DTCR(MDMA_CHANNEL));
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REG_MDMAC_DCCSR(MDMA_CHANNEL) = 0;
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}
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void memcpy_dma(void *target, const void *source, size_t len, unsigned int bits)
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{
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if(((unsigned int)source < 0xa0000000) && len)
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commit_dcache_range(source, len);
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if(((unsigned int)target < 0xa0000000) && len)
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discard_dcache_range(target, len);
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REG_MDMAC_DCCSR(MDMA_CHANNEL) = 0;
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REG_MDMAC_DSAR(MDMA_CHANNEL) = PHYSADDR((unsigned long)source);
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REG_MDMAC_DTAR(MDMA_CHANNEL) = PHYSADDR((unsigned long)target);
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REG_MDMAC_DRSR(MDMA_CHANNEL) = DMAC_DRSR_RS_AUTO;
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switch (bits)
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{
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case 8:
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REG_MDMAC_DTCR(MDMA_CHANNEL) = len;
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REG_MDMAC_DCMD(MDMA_CHANNEL) = DMAC_DCMD_SAI | DMAC_DCMD_DAI | DMAC_DCMD_SWDH_8 | DMAC_DCMD_DWDH_8 | DMAC_DCMD_DS_8BIT;
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break;
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case 16:
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REG_MDMAC_DTCR(MDMA_CHANNEL) = len / 2;
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REG_MDMAC_DCMD(MDMA_CHANNEL) = DMAC_DCMD_SAI | DMAC_DCMD_DAI | DMAC_DCMD_SWDH_16 | DMAC_DCMD_DWDH_16 | DMAC_DCMD_DS_16BIT;
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break;
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case 32:
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REG_MDMAC_DTCR(MDMA_CHANNEL) = len / 4;
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REG_MDMAC_DCMD(MDMA_CHANNEL) = DMAC_DCMD_SAI | DMAC_DCMD_DAI | DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | DMAC_DCMD_DS_32BIT;
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break;
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default:
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return;
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}
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REG_MDMAC_DCCSR(MDMA_CHANNEL) = DMAC_DCCSR_EN | DMAC_DCCSR_NDES;
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while (REG_MDMAC_DTCR(MDMA_CHANNEL));
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REG_MDMAC_DCCSR(MDMA_CHANNEL) = 0;
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}
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