26ff6c11ef
Cleanup of page table allocators, using generic folded PMD and PUD helpers. TLB flushing operations are moved to a more sensible spot. The page fault handler is also optimized slightly, we no longer waste cycles on IRQ disabling for flushing of the page from the ITLB, since we're already under CLI protection by the initial exception handler. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $
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*
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* include/asm-sh/cache.h
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*
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* Copyright 1999 (C) Niibe Yutaka
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* Copyright 2002, 2003 (C) Paul Mundt
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*/
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#ifndef __ASM_SH_CACHE_H
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#define __ASM_SH_CACHE_H
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#ifdef __KERNEL__
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#include <asm/cpu/cache.h>
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#define SH_CACHE_VALID 1
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#define SH_CACHE_UPDATED 2
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#define SH_CACHE_COMBINED 4
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#define SH_CACHE_ASSOC 8
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#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
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#define SMP_CACHE_BYTES L1_CACHE_BYTES
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#define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
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struct cache_info {
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unsigned int ways; /* Number of cache ways */
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unsigned int sets; /* Number of cache sets */
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unsigned int linesz; /* Cache line size (bytes) */
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unsigned int way_size; /* sets * line size */
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/*
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* way_incr is the address offset for accessing the next way
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* in memory mapped cache array ops.
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*/
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unsigned int way_incr;
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unsigned int entry_shift;
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unsigned int entry_mask;
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/*
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* Compute a mask which selects the address bits which overlap between
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* 1. those used to select the cache set during indexing
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* 2. those in the physical page number.
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*/
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unsigned int alias_mask;
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unsigned int n_aliases; /* Number of aliases */
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unsigned long flags;
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};
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#endif /* __KERNEL__ */
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#endif /* __ASM_SH_CACHE_H */
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