/* * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.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. */ #ifndef __ARC_ASM_CACHE_H#define __ARC_ASM_CACHE_H /* In case $$ not config, setup a dummy number for rest of kernel */#ifndef CONFIG_ARC_CACHE_LINE_SHIFT#define L1_CACHE_SHIFT		6#else#define L1_CACHE_SHIFT		CONFIG_ARC_CACHE_LINE_SHIFT#endif #define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)#define CACHE_LINE_MASK		(~(L1_CACHE_BYTES - 1)) /* * ARC700 doesn't cache any access in top 1G (0xc000_0000 to 0xFFFF_FFFF) * Ideal for wiring memory mapped peripherals as we don't need to do * explicit uncached accesses (LD.di/ST.di) hence more portable drivers */#define ARC_UNCACHED_ADDR_SPACE	0xc0000000 #ifndef __ASSEMBLY__ /* Uncached access macros */#define arc_read_uncached_32(ptr)	\({					\	unsigned int __ret;		\	__asm__ __volatile__(		\	"	ld.di %0, [%1]	\n"	\	: "=r"(__ret)			\	: "r"(ptr));			\	__ret;				\}) #define arc_write_uncached_32(ptr, data)\({					\	__asm__ __volatile__(		\	"	st.di %0, [%1]	\n"	\	:				\	: "r"(data), "r"(ptr));		\}) #define ARCH_DMA_MINALIGN      L1_CACHE_BYTES extern void arc_cache_init(void);extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len);extern void read_decode_cache_bcr(void); #endif	/* !__ASSEMBLY__ */ /* Instruction cache related Auxiliary registers */#define ARC_REG_IC_BCR		0x77	/* Build Config reg */#define ARC_REG_IC_IVIC		0x10#define ARC_REG_IC_CTRL		0x11#define ARC_REG_IC_IVIL		0x19#if defined(CONFIG_ARC_MMU_V3) || defined(CONFIG_ARC_MMU_V4)#define ARC_REG_IC_PTAG		0x1E#endif /* Bit val in IC_CTRL */#define IC_CTRL_CACHE_DISABLE   0x1 /* Data cache related Auxiliary registers */#define ARC_REG_DC_BCR		0x72	/* Build Config reg */#define ARC_REG_DC_IVDC		0x47#define ARC_REG_DC_CTRL		0x48#define ARC_REG_DC_IVDL		0x4A#define ARC_REG_DC_FLSH		0x4B#define ARC_REG_DC_FLDL		0x4C#define ARC_REG_DC_PTAG		0x5C /* Bit val in DC_CTRL */#define DC_CTRL_INV_MODE_FLUSH  0x40#define DC_CTRL_FLUSH_STATUS    0x100 /*System-level cache (L2 cache) related Auxiliary registers */#define ARC_REG_SLC_CFG		0x901#define ARC_REG_SLC_CTRL	0x903#define ARC_REG_SLC_FLUSH	0x904#define ARC_REG_SLC_INVALIDATE	0x905#define ARC_REG_SLC_RGN_START	0x914#define ARC_REG_SLC_RGN_END	0x916 /* Bit val in SLC_CONTROL */#define SLC_CTRL_IM		0x040#define SLC_CTRL_DISABLE	0x001#define SLC_CTRL_BUSY		0x100#define SLC_CTRL_RGN_OP_INV	0x200 #endif /* _ASM_CACHE_H */