2 * include/asm-parisc/cache.h
5 #ifndef __ARCH_PARISC_CACHE_H
6 #define __ARCH_PARISC_CACHE_H
10 * PA 2.0 processors have 64 and 128-byte L2 cachelines; PA 1.1 processors
11 * have 32-byte cachelines. The L1 length appears to be 16 bytes but this
12 * is not clearly documented.
14 #define L1_CACHE_BYTES 16
15 #define L1_CACHE_SHIFT 4
19 #define SMP_CACHE_BYTES L1_CACHE_BYTES
21 #define ARCH_DMA_MINALIGN L1_CACHE_BYTES
23 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
25 void parisc_cache_init(void); /* initializes cache-flushing */
26 void disable_sr_hashing_asm(int); /* low level support for above */
27 void disable_sr_hashing(void); /* turns off space register hashing */
28 void free_sid(unsigned long);
29 unsigned long alloc_sid(void);
32 extern void show_cache_info(struct seq_file *m);
35 extern int dcache_stride;
36 extern int icache_stride;
37 extern struct pdc_cache_info cache_info;
38 void parisc_setup_cache_timing(void);
40 #define pdtlb(addr) asm volatile("pdtlb 0(%%sr1,%0)" : : "r" (addr));
41 #define pitlb(addr) asm volatile("pitlb 0(%%sr1,%0)" : : "r" (addr));
42 #define pdtlb_kernel(addr) asm volatile("pdtlb 0(%0)" : : "r" (addr));
44 #endif /* ! __ASSEMBLY__ */
46 /* Classes of processor wrt: disabling space register hashing */
48 #define SRHASH_PCXST 0 /* pcxs, pcxt, pcxt_ */
49 #define SRHASH_PCXL 1 /* pcxl */
50 #define SRHASH_PA20 2 /* pcxu, pcxu_, pcxw, pcxw_ */