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Viewing changes to arch/cris/arch-v10/lib/dmacopy.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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arch/cris/arch-v10/lib/dmacopy.c
 
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/*
 
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 * memcpy for large blocks, using memory-memory DMA channels 6 and 7 in Etrax
 
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 */
 
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#include <asm/svinto.h>
 
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#include <asm/io.h>
 
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#define D(x)
 
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void *dma_memcpy(void *pdst,
 
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                 const void *psrc,
 
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                 unsigned int pn)
 
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{
 
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        static etrax_dma_descr indma, outdma;
 
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        D(printk(KERN_DEBUG "dma_memcpy %d bytes... ", pn));
 
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#if 0
 
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        *R_GEN_CONFIG = genconfig_shadow =
 
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                (genconfig_shadow & ~0x3c0000) |
 
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                IO_STATE(R_GEN_CONFIG, dma6, intdma7) |
 
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                IO_STATE(R_GEN_CONFIG, dma7, intdma6);
 
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#endif
 
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        indma.sw_len = outdma.sw_len = pn;
 
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        indma.ctrl = d_eol | d_eop;
 
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        outdma.ctrl = d_eol;
 
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        indma.buf = psrc;
 
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        outdma.buf = pdst;
 
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        *R_DMA_CH6_FIRST = &indma;
 
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        *R_DMA_CH7_FIRST = &outdma;
 
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        *R_DMA_CH6_CMD = IO_STATE(R_DMA_CH6_CMD, cmd, start);
 
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        *R_DMA_CH7_CMD = IO_STATE(R_DMA_CH7_CMD, cmd, start);
 
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        while (*R_DMA_CH7_CMD == 1)
 
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                /* wait for completion */;
 
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        D(printk(KERN_DEBUG "done\n"));
 
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}
 
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