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Diffstat (limited to 'arch/nds32/include/asm/cache.h')
| -rw-r--r-- | arch/nds32/include/asm/cache.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/nds32/include/asm/cache.h b/arch/nds32/include/asm/cache.h new file mode 100644 index 000000000..d76919621 --- /dev/null +++ b/arch/nds32/include/asm/cache.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * 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_CACHE_H +#define _ASM_CACHE_H + +/* cache */ +int icache_status(void); +void icache_enable(void); +void icache_disable(void); +int dcache_status(void); +void dcache_enable(void); +void dcache_disable(void); + +#define DEFINE_GET_SYS_REG(reg) \ + static inline unsigned long GET_##reg(void) \ + { \ + unsigned long val; \ + __asm__ volatile ( \ + "mfsr %0, $"#reg : "=&r" (val) : : "memory" \ + ); \ + return val; \ + } + +enum cache_t {ICACHE, DCACHE}; +DEFINE_GET_SYS_REG(ICM_CFG); +DEFINE_GET_SYS_REG(DCM_CFG); +#define ICM_CFG_OFF_ISZ 6 /* I-cache line size */ +#define ICM_CFG_MSK_ISZ (0x7UL << ICM_CFG_OFF_ISZ) +#define DCM_CFG_OFF_DSZ 6 /* D-cache line size */ +#define DCM_CFG_MSK_DSZ (0x7UL << DCM_CFG_OFF_DSZ) + +#endif /* _ASM_CACHE_H */ |