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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __MMU_H #define __MMU_H /* * Privileged Space Mapping Buffer (PMB) definitions */ #define PMB_PASCR 0xff000070 #define PMB_IRMCR 0xff000078 #define PASCR_SE 0x80000000 #define PMB_ADDR 0xf6100000 #define PMB_DATA 0xf7100000 #define NR_PMB_ENTRIES 16 #define PMB_E_MASK 0x0000000f #define PMB_E_SHIFT 8 #define PMB_PFN_MASK 0xff000000 #define PMB_SZ_16M 0x00000000 #define PMB_SZ_64M 0x00000010 #define PMB_SZ_128M 0x00000080 #define PMB_SZ_512M 0x00000090 #define PMB_SZ_MASK PMB_SZ_512M #define PMB_C 0x00000008 #define PMB_WT 0x00000001 #define PMB_UB 0x00000200 #define PMB_CACHE_MASK (PMB_C | PMB_WT | PMB_UB) #define PMB_V 0x00000100 #define PMB_NO_ENTRY (-1) #ifndef __ASSEMBLY__ #include <linux/errno.h> #include <linux/threads.h> #include <asm/page.h> /* Default "unsigned long" context */ typedef unsigned long mm_context_id_t[NR_CPUS]; typedef struct { #ifdef CONFIG_MMU mm_context_id_t id; void *vdso; #else unsigned long end_brk; #endif #ifdef CONFIG_BINFMT_ELF_FDPIC unsigned long exec_fdpic_loadmap; unsigned long interp_fdpic_loadmap; #endif } mm_context_t; #ifdef CONFIG_PMB /* arch/sh/mm/pmb.c */ bool __in_29bit_mode(void); void pmb_init(void); int pmb_bolt_mapping(unsigned long virt, phys_addr_t phys, unsigned long size, pgprot_t prot); void __iomem *pmb_remap_caller(phys_addr_t phys, unsigned long size, pgprot_t prot, void *caller); int pmb_unmap(void __iomem *addr); #else static inline int pmb_bolt_mapping(unsigned long virt, phys_addr_t phys, unsigned long size, pgprot_t prot) { return -EINVAL; } static inline void __iomem * pmb_remap_caller(phys_addr_t phys, unsigned long size, pgprot_t prot, void *caller) { return NULL; } static inline int pmb_unmap(void __iomem *addr) { return -EINVAL; } #define pmb_init(addr) do { } while (0) #ifdef CONFIG_29BIT #define __in_29bit_mode() (1) #else #define __in_29bit_mode() (0) #endif #endif /* CONFIG_PMB */ static inline void __iomem * pmb_remap(phys_addr_t phys, unsigned long size, pgprot_t prot) { return pmb_remap_caller(phys, size, prot, __builtin_return_address(0)); } #endif /* __ASSEMBLY__ */ #endif /* __MMU_H */
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