/* * arch/arm/include/asm/outercache.h * * Copyright (C) 2010 ARM Ltd. * Written by Catalin Marinas <catalin.marinas@arm.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef __ASM_OUTERCACHE_H#define __ASM_OUTERCACHE_H #include <linux/types.h> struct l2x0_regs; struct outer_cache_fns {	void (*inv_range)(unsigned long, unsigned long);	void (*clean_range)(unsigned long, unsigned long);	void (*flush_range)(unsigned long, unsigned long);	void (*flush_all)(void);	void (*disable)(void);#ifdef CONFIG_OUTER_CACHE_SYNC	void (*sync)(void);#endif	void (*resume)(void); 	/* This is an ARM L2C thing */	void (*write_sec)(unsigned long, unsigned);	void (*configure)(const struct l2x0_regs *);}; extern struct outer_cache_fns outer_cache; #ifdef CONFIG_OUTER_CACHE/** * outer_inv_range - invalidate range of outer cache lines * @start: starting physical address, inclusive * @end: end physical address, exclusive */static inline void outer_inv_range(phys_addr_t start, phys_addr_t end){	if (outer_cache.inv_range)		outer_cache.inv_range(start, end);} /** * outer_clean_range - clean dirty outer cache lines * @start: starting physical address, inclusive * @end: end physical address, exclusive */static inline void outer_clean_range(phys_addr_t start, phys_addr_t end){	if (outer_cache.clean_range)		outer_cache.clean_range(start, end);} /** * outer_flush_range - clean and invalidate outer cache lines * @start: starting physical address, inclusive * @end: end physical address, exclusive */static inline void outer_flush_range(phys_addr_t start, phys_addr_t end){	if (outer_cache.flush_range)		outer_cache.flush_range(start, end);} /** * outer_flush_all - clean and invalidate all cache lines in the outer cache * * Note: depending on implementation, this may not be atomic - it must * only be called with interrupts disabled and no other active outer * cache masters. * * It is intended that this function is only used by implementations * needing to override the outer_cache.disable() method due to security. * (Some implementations perform this as a clean followed by an invalidate.) */static inline void outer_flush_all(void){	if (outer_cache.flush_all)		outer_cache.flush_all();} /** * outer_disable - clean, invalidate and disable the outer cache * * Disable the outer cache, ensuring that any data contained in the outer * cache is pushed out to lower levels of system memory.  The note and * conditions above concerning outer_flush_all() applies here. */extern void outer_disable(void); /** * outer_resume - restore the cache configuration and re-enable outer cache * * Restore any configuration that the cache had when previously enabled, * and re-enable the outer cache. */static inline void outer_resume(void){	if (outer_cache.resume)		outer_cache.resume();} #else static inline void outer_inv_range(phys_addr_t start, phys_addr_t end){ }static inline void outer_clean_range(phys_addr_t start, phys_addr_t end){ }static inline void outer_flush_range(phys_addr_t start, phys_addr_t end){ }static inline void outer_flush_all(void) { }static inline void outer_disable(void) { }static inline void outer_resume(void) { } #endif #endif	/* __ASM_OUTERCACHE_H */