forked from Minki/linux
5d83d66635
This eliminated most of the remaining users of btfixup. There are some complications because of the special cases we have for sun4d, leon, and some flavors of viking. It was found that there are no cases where a flush_page_for_dma method was not hooked up to something, so the "noflush" iommu methods were removed. Add some documentation to the viking_sun4d_smp_ops to describe exactly the hardware bug which causes us to need special TLB flushing on sun4d. Signed-off-by: David S. Miller <davem@davemloft.net>
59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
#ifndef _SPARC_CACHEFLUSH_H
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#define _SPARC_CACHEFLUSH_H
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#include <asm/cachetlb_32.h>
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#define flush_cache_all() \
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sparc32_cachetlb_ops->cache_all()
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#define flush_cache_mm(mm) \
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sparc32_cachetlb_ops->cache_mm(mm)
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#define flush_cache_dup_mm(mm) \
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sparc32_cachetlb_ops->cache_mm(mm)
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#define flush_cache_range(vma,start,end) \
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sparc32_cachetlb_ops->cache_range(vma, start, end)
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#define flush_cache_page(vma,addr,pfn) \
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sparc32_cachetlb_ops->cache_page(vma, addr)
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#define flush_icache_range(start, end) do { } while (0)
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#define flush_icache_page(vma, pg) do { } while (0)
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#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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do { \
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flush_cache_page(vma, vaddr, page_to_pfn(page));\
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memcpy(dst, src, len); \
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} while (0)
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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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do { \
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flush_cache_page(vma, vaddr, page_to_pfn(page));\
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memcpy(dst, src, len); \
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} while (0)
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#define __flush_page_to_ram(addr) \
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sparc32_cachetlb_ops->page_to_ram(addr)
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#define flush_sig_insns(mm,insn_addr) \
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sparc32_cachetlb_ops->sig_insns(mm, insn_addr)
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#define flush_page_for_dma(addr) \
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sparc32_cachetlb_ops->page_for_dma(addr)
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extern void sparc_flush_page_to_ram(struct page *page);
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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
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#define flush_dcache_page(page) sparc_flush_page_to_ram(page)
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#define flush_dcache_mmap_lock(mapping) do { } while (0)
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#define flush_dcache_mmap_unlock(mapping) do { } while (0)
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#define flush_cache_vmap(start, end) flush_cache_all()
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#define flush_cache_vunmap(start, end) flush_cache_all()
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/* When a context switch happens we must flush all user windows so that
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* the windows of the current process are flushed onto its stack. This
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* way the windows are all clean for the next process and the stack
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* frames are up to date.
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*/
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extern void flush_user_windows(void);
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extern void kill_user_windows(void);
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extern void flushw_all(void);
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#endif /* _SPARC_CACHEFLUSH_H */
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