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