88ae9024e4
* Add panicf() handling * Add not-yet-enabled dma acceleration * Other (minor) fixes git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18203 a1c6a512-1295-4272-9138-f99709370657
119 lines
3.9 KiB
C
119 lines
3.9 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) 2008 by Maurus Cuelenaere
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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 "system.h"
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void memset(void *target, unsigned char c, size_t len)
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{
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int ch = DMA_CHANNEL;
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unsigned int d;
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unsigned char *dp;
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if(len < 32)
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_memset(target,c,len);
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else
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{
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if(((unsigned int)target < 0xa0000000) && len)
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dma_cache_wback_inv((unsigned long)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_DMAC_DSAR(ch) = PHYSADDR((unsigned long)dp);
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REG_DMAC_DTAR(ch) = PHYSADDR((unsigned long)target);
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REG_DMAC_DTCR(ch) = len / 32;
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REG_DMAC_DRSR(ch) = DMAC_DRSR_RS_AUTO;
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REG_DMAC_DCMD(ch) = DMAC_DCMD_DAI | DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | DMAC_DCMD_DS_32BYTE;
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REG_DMAC_DCCSR(ch) = DMAC_DCCSR_EN | DMAC_DCCSR_NDES;
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while (REG_DMAC_DTCR(ch));
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if(len % 32)
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{
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dp = (unsigned char *)((unsigned int)target + (len & (32 - 1)));
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for(d = 0;d < (len % 32); d++)
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*dp++ = c;
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}
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}
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}
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void memset16(void *target, unsigned short c, size_t len)
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{
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int ch = DMA_CHANNEL;
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unsigned short d;
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unsigned short *dp;
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if(len < 32)
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_memset16(target,c,len);
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else
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{
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if(((unsigned int)target < 0xa0000000) && len)
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dma_cache_wback_inv((unsigned long)target, len);
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d = c;
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REG_DMAC_DSAR(ch) = PHYSADDR((unsigned long)&d);
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REG_DMAC_DTAR(ch) = PHYSADDR((unsigned long)target);
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REG_DMAC_DTCR(ch) = len / 32;
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REG_DMAC_DRSR(ch) = DMAC_DRSR_RS_AUTO;
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REG_DMAC_DCMD(ch) = DMAC_DCMD_DAI | DMAC_DCMD_SWDH_16 | DMAC_DCMD_DWDH_16 | DMAC_DCMD_DS_32BYTE;
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REG_DMAC_DCCSR(ch) = DMAC_DCCSR_EN | DMAC_DCCSR_NDES;
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while (REG_DMAC_DTCR(ch));
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if(len % 32)
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{
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dp = (unsigned short *)((unsigned int)target + (len & (32 - 1)));
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for(d = 0; d < (len % 32); d++)
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*dp++ = c;
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}
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}
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}
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void memcpy(void *target, const void *source, size_t len)
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{
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int ch = DMA_CHANNEL;
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unsigned char *dp;
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if(len < 4)
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_memcpy(target, source, len);
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if(((unsigned int)source < 0xa0000000) && len)
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dma_cache_wback_inv((unsigned long)source, len);
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if(((unsigned int)target < 0xa0000000) && len)
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dma_cache_wback_inv((unsigned long)target, len);
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REG_DMAC_DSAR(ch) = PHYSADDR((unsigned long)source);
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REG_DMAC_DTAR(ch) = PHYSADDR((unsigned long)target);
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REG_DMAC_DTCR(ch) = len / 4;
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REG_DMAC_DRSR(ch) = DMAC_DRSR_RS_AUTO;
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REG_DMAC_DCMD(ch) = DMAC_DCMD_DAI | DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | DMAC_DCMD_DS_32BIT;
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REG_DMAC_DCCSR(ch) = DMAC_DCCSR_EN | DMAC_DCCSR_NDES;
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while (REG_DMAC_DTCR(ch));
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if(len % 4)
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{
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dp = (unsigned char*)((unsigned int)target + (len & (4 - 1)));
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for(i = 0; i < (len % 4); i++)
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*dp++ = *source;
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}
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}
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