/* * include/asm-parisc/cache.h */ #ifndef __ARCH_PARISC_CACHE_H#define __ARCH_PARISC_CACHE_H  /* * 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#define L1_CACHE_SHIFT 6#else#define L1_CACHE_BYTES 32#define L1_CACHE_SHIFT 5#endif #ifndef __ASSEMBLY__ #define L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1)) #define SMP_CACHE_BYTES L1_CACHE_BYTES #define __read_mostly __attribute__((__section__(".data.read_mostly"))) 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_SMPextern void flush_data_cache(void); /* flushes data-cache only (all processors) */extern void flush_instruction_cache(void); /* flushes i-cache only (all processors) */#else#define flush_data_cache() flush_data_cache_local(NULL)#define flush_instruction_cache() flush_instruction_cache_local(NULL)#endif extern void parisc_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_asm(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);extern void flush_user_dcache_page(unsigned long);extern void flush_user_icache_page(unsigned long); 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