57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* include/asm-parisc/cache.h
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*/
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#ifndef __ARCH_PARISC_CACHE_H
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#define __ARCH_PARISC_CACHE_H
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/*
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* PA 2.0 processors have 64 and 128-byte L2 cachelines; PA 1.1 processors
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* have 32-byte cachelines. The L1 length appears to be 16 bytes but this
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* is not clearly documented.
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*/
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#define L1_CACHE_BYTES 16
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#define L1_CACHE_SHIFT 4
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#ifndef __ASSEMBLY__
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#define SMP_CACHE_BYTES L1_CACHE_BYTES
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#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
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#define __read_mostly __attribute__((__section__(".data..read_mostly")))
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/* Read-only memory is marked before mark_rodata_ro() is called. */
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#define __ro_after_init __read_mostly
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void parisc_cache_init(void); /* initializes cache-flushing */
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void disable_sr_hashing_asm(int); /* low level support for above */
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void disable_sr_hashing(void); /* turns off space register hashing */
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void free_sid(unsigned long);
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unsigned long alloc_sid(void);
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struct seq_file;
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extern void show_cache_info(struct seq_file *m);
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extern int split_tlb;
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extern int dcache_stride;
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extern int icache_stride;
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extern struct pdc_cache_info cache_info;
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void parisc_setup_cache_timing(void);
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#define pdtlb(addr) asm volatile("pdtlb 0(%%sr1,%0)" : : "r" (addr));
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#define pitlb(addr) asm volatile("pitlb 0(%%sr1,%0)" : : "r" (addr));
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#define pdtlb_kernel(addr) asm volatile("pdtlb 0(%0)" : : "r" (addr));
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#endif /* ! __ASSEMBLY__ */
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/* Classes of processor wrt: disabling space register hashing */
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#define SRHASH_PCXST 0 /* pcxs, pcxt, pcxt_ */
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#define SRHASH_PCXL 1 /* pcxl */
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#define SRHASH_PA20 2 /* pcxu, pcxu_, pcxw, pcxw_ */
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#endif
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