cache.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:3k
- /*
- * include/asm-parisc/cache.h
- */
- #ifndef __ARCH_PARISC_CACHE_H
- #define __ARCH_PARISC_CACHE_H
- #include <linux/config.h>
- #ifndef __ASSEMBLY__
- /*
- * PA 2.0 processors have 64-byte cachelines; PA 1.1 processors have
- * 32-byte cachelines. The default configuration is not for SMP anyway,
- * so if you're building for SMP, you should select the appropriate
- * processor type. There is a potential livelock danger when running
- * a machine with this value set too small, but it's more probable you'll
- * just ruin performance.
- */
- #ifdef CONFIG_PA20
- #define L1_CACHE_BYTES 64
- #else
- #define L1_CACHE_BYTES 32
- #endif
- #define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
- #define SMP_CACHE_BYTES L1_CACHE_BYTES
- #define __cacheline_aligned __attribute__((__aligned__(L1_CACHE_BYTES)))
- extern void flush_data_cache_local(void); /* flushes local data-cache only */
- extern void flush_instruction_cache_local(void); /* flushes local code-cache only */
- #ifdef CONFIG_SMP
- extern void flush_data_cache(void); /* flushes data-cache only (all processors) */
- #else
- #define flush_data_cache flush_data_cache_local
- #define flush_instruction_cache flush_instruction_cache_local
- #endif
- extern void cache_init(void); /* initializes cache-flushing */
- extern void flush_all_caches(void); /* flush everything (tlb & cache) */
- extern int get_cache_info(char *);
- extern void flush_user_icache_range_asm(unsigned long, unsigned long);
- extern void flush_kernel_icache_range_asm(unsigned long, unsigned long);
- extern void flush_user_dcache_range_asm(unsigned long, unsigned long);
- extern void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
- extern void flush_kernel_dcache_page(void *);
- extern void flush_kernel_icache_page(void *);
- extern void disable_sr_hashing(void); /* turns off space register hashing */
- extern void disable_sr_hashing_asm(int); /* low level support for above */
- extern void free_sid(unsigned long);
- unsigned long alloc_sid(void);
- struct seq_file;
- extern void show_cache_info(struct seq_file *m);
- extern int split_tlb;
- extern int dcache_stride;
- extern int icache_stride;
- extern struct pdc_cache_info cache_info;
- #define pdtlb(addr) asm volatile("pdtlb 0(%%sr1,%0)" : : "r" (addr));
- #define pitlb(addr) asm volatile("pitlb 0(%%sr1,%0)" : : "r" (addr));
- #define pdtlb_kernel(addr) asm volatile("pdtlb 0(%0)" : : "r" (addr));
- #endif /* ! __ASSEMBLY__ */
- /* Classes of processor wrt: disabling space register hashing */
- #define SRHASH_PCXST 0 /* pcxs, pcxt, pcxt_ */
- #define SRHASH_PCXL 1 /* pcxl */
- #define SRHASH_PA20 2 /* pcxu, pcxu_, pcxw, pcxw_ */
- #endif