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51 lines
1.1 KiB
51 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __ASM_SH_MMU_CONTEXT_32_H |
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#define __ASM_SH_MMU_CONTEXT_32_H |
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#ifdef CONFIG_CPU_HAS_PTEAEX |
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static inline void set_asid(unsigned long asid) |
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{ |
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__raw_writel(asid, MMU_PTEAEX); |
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} |
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static inline unsigned long get_asid(void) |
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{ |
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return __raw_readl(MMU_PTEAEX) & MMU_CONTEXT_ASID_MASK; |
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} |
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#else |
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static inline void set_asid(unsigned long asid) |
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{ |
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unsigned long __dummy; |
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__asm__ __volatile__ ("mov.l %2, %0\n\t" |
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"and %3, %0\n\t" |
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"or %1, %0\n\t" |
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"mov.l %0, %2" |
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: "=&r" (__dummy) |
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: "r" (asid), "m" (__m(MMU_PTEH)), |
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"r" (0xffffff00)); |
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} |
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static inline unsigned long get_asid(void) |
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{ |
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unsigned long asid; |
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__asm__ __volatile__ ("mov.l %1, %0" |
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: "=r" (asid) |
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: "m" (__m(MMU_PTEH))); |
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asid &= MMU_CONTEXT_ASID_MASK; |
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return asid; |
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} |
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#endif /* CONFIG_CPU_HAS_PTEAEX */ |
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/* MMU_TTB is used for optimizing the fault handling. */ |
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static inline void set_TTB(pgd_t *pgd) |
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{ |
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__raw_writel((unsigned long)pgd, MMU_TTB); |
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} |
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static inline pgd_t *get_TTB(void) |
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{ |
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return (pgd_t *)__raw_readl(MMU_TTB); |
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} |
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#endif /* __ASM_SH_MMU_CONTEXT_32_H */
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