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Viewing changes to arch/cris/arch-v32/kernel/cache.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-v32/kernel/cache.c
 
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#include <linux/module.h>
 
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#include <asm/io.h>
 
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#include <arch/cache.h>
 
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#include <arch/hwregs/dma.h>
 
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/* This file is used to workaround a cache bug, Guinness TR 106. */
 
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inline void flush_dma_descr(struct dma_descr_data *descr, int flush_buf)
 
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{
 
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        /* Flush descriptor to make sure we get correct in_eop and after. */
 
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        asm volatile ("ftagd [%0]" :: "r" (descr));
 
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        /* Flush buffer pointed out by descriptor. */
 
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        if (flush_buf)
 
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                cris_flush_cache_range(phys_to_virt((unsigned)descr->buf),
 
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                                (unsigned)(descr->after - descr->buf));
 
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}
 
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EXPORT_SYMBOL(flush_dma_descr);
 
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void flush_dma_list(struct dma_descr_data *descr)
 
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{
 
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        while (1) {
 
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                flush_dma_descr(descr, 1);
 
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                if (descr->eol)
 
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                        break;
 
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                descr = phys_to_virt((unsigned)descr->next);
 
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        }
 
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}
 
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EXPORT_SYMBOL(flush_dma_list);
 
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/* From cacheflush.S */
 
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EXPORT_SYMBOL(cris_flush_cache);
 
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/* From cacheflush.S */
 
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EXPORT_SYMBOL(cris_flush_cache_range);