diff options
Diffstat (limited to 'arch/sh/include/asm/mmu_context_32.h')
| -rw-r--r-- | arch/sh/include/asm/mmu_context_32.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/sh/include/asm/mmu_context_32.h b/arch/sh/include/asm/mmu_context_32.h new file mode 100644 index 0000000000..bc5034fa62 --- /dev/null +++ b/arch/sh/include/asm/mmu_context_32.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_SH_MMU_CONTEXT_32_H +#define __ASM_SH_MMU_CONTEXT_32_H + +#ifdef CONFIG_CPU_HAS_PTEAEX +static inline void set_asid(unsigned long asid) +{ + __raw_writel(asid, MMU_PTEAEX); +} + +static inline unsigned long get_asid(void) +{ + return __raw_readl(MMU_PTEAEX) & MMU_CONTEXT_ASID_MASK; +} +#else +static inline void set_asid(unsigned long asid) +{ + unsigned long __dummy; + + __asm__ __volatile__ ("mov.l %2, %0\n\t" + "and %3, %0\n\t" + "or %1, %0\n\t" + "mov.l %0, %2" + : "=&r" (__dummy) + : "r" (asid), "m" (__m(MMU_PTEH)), + "r" (0xffffff00)); +} + +static inline unsigned long get_asid(void) +{ + unsigned long asid; + + __asm__ __volatile__ ("mov.l %1, %0" + : "=r" (asid) + : "m" (__m(MMU_PTEH))); + asid &= MMU_CONTEXT_ASID_MASK; + return asid; +} +#endif /* CONFIG_CPU_HAS_PTEAEX */ + +/* MMU_TTB is used for optimizing the fault handling. */ +static inline void set_TTB(pgd_t *pgd) +{ + __raw_writel((unsigned long)pgd, MMU_TTB); +} + +static inline pgd_t *get_TTB(void) +{ + return (pgd_t *)__raw_readl(MMU_TTB); +} +#endif /* __ASM_SH_MMU_CONTEXT_32_H */ |