/* SPDX-License-Identifier: GPL-2.0 *//* * include/asm-parisc/prefetch.h * * PA 2.0 defines data prefetch instructions on page 6-11 of the Kane book. * In addition, many implementations do hardware prefetching of both * instructions and data. * * PA7300LC (page 14-4 of the ERS) also implements prefetching by a load * to gr0 but not in a way that Linux can use.  If the load would cause an * interruption (eg due to prefetching 0), it is suppressed on PA2.0 * processors, but not on 7300LC. * */ #ifndef __ASM_PARISC_PREFETCH_H#define __ASM_PARISC_PREFETCH_H #ifndef __ASSEMBLER__#ifdef CONFIG_PREFETCH #define ARCH_HAS_PREFETCHstatic inline void prefetch(const void *addr){	__asm__(#ifndef CONFIG_PA20		/* Need to avoid prefetch of NULL on PA7300LC */		"	extrw,u,= %0,31,32,%%r0\n"#endif		"	ldw 0(%0), %%r0" : : "r" (addr));} /* LDD is a PA2.0 addition. */#ifdef CONFIG_PA20#define ARCH_HAS_PREFETCHWstatic inline void prefetchw(const void *addr){	__asm__("ldd 0(%0), %%r0" : : "r" (addr));}#endif /* CONFIG_PA20 */ #endif /* CONFIG_PREFETCH */#endif /* __ASSEMBLER__ */ #endif /* __ASM_PARISC_PROCESSOR_H */