1#ifndef __MMU_H
  2#define __MMU_H
  3
  4/*
  5 * Privileged Space Mapping Buffer (PMB) definitions
  6 */
  7#define PMB_PASCR		0xff000070
  8#define PMB_IRMCR		0xff000078
  9
 10#define PASCR_SE		0x80000000
 11
 12#define PMB_ADDR		0xf6100000
 13#define PMB_DATA		0xf7100000
 14
 15#define NR_PMB_ENTRIES		16
 16
 17#define PMB_E_MASK		0x0000000f
 18#define PMB_E_SHIFT		8
 19
 20#define PMB_PFN_MASK		0xff000000
 21
 22#define PMB_SZ_16M		0x00000000
 23#define PMB_SZ_64M		0x00000010
 24#define PMB_SZ_128M		0x00000080
 25#define PMB_SZ_512M		0x00000090
 26#define PMB_SZ_MASK		PMB_SZ_512M
 27#define PMB_C			0x00000008
 28#define PMB_WT			0x00000001
 29#define PMB_UB			0x00000200
 30#define PMB_CACHE_MASK		(PMB_C | PMB_WT | PMB_UB)
 31#define PMB_V			0x00000100
 32
 33#define PMB_NO_ENTRY		(-1)
 34
 35#ifndef __ASSEMBLY__
 36#include <linux/errno.h>
 37#include <linux/threads.h>
 38#include <asm/page.h>
 39
 40/* Default "unsigned long" context */
 41typedef unsigned long mm_context_id_t[NR_CPUS];
 42
 43typedef struct {
 44#ifdef CONFIG_MMU
 45	mm_context_id_t		id;
 46	void			*vdso;
 47#else
 48	unsigned long		end_brk;
 49#endif
 50#ifdef CONFIG_BINFMT_ELF_FDPIC
 51	unsigned long		exec_fdpic_loadmap;
 52	unsigned long		interp_fdpic_loadmap;
 53#endif
 54} mm_context_t;
 55
 56#ifdef CONFIG_PMB
 57/* arch/sh/mm/pmb.c */
 58bool __in_29bit_mode(void);
 59
 60void pmb_init(void);
 61int pmb_bolt_mapping(unsigned long virt, phys_addr_t phys,
 62		     unsigned long size, pgprot_t prot);
 63void __iomem *pmb_remap_caller(phys_addr_t phys, unsigned long size,
 64			       pgprot_t prot, void *caller);
 65int pmb_unmap(void __iomem *addr);
 66
 67#else
 68
 69static inline int
 70pmb_bolt_mapping(unsigned long virt, phys_addr_t phys,
 71		 unsigned long size, pgprot_t prot)
 72{
 73	return -EINVAL;
 74}
 75
 76static inline void __iomem *
 77pmb_remap_caller(phys_addr_t phys, unsigned long size,
 78		 pgprot_t prot, void *caller)
 79{
 80	return NULL;
 81}
 82
 83static inline int pmb_unmap(void __iomem *addr)
 84{
 85	return -EINVAL;
 86}
 87
 88#define pmb_init(addr)		do { } while (0)
 89
 90#ifdef CONFIG_29BIT
 91#define __in_29bit_mode()	(1)
 92#else
 93#define __in_29bit_mode()	(0)
 94#endif
 95
 96#endif /* CONFIG_PMB */
 97
 98static inline void __iomem *
 99pmb_remap(phys_addr_t phys, unsigned long size, pgprot_t prot)
100{
101	return pmb_remap_caller(phys, size, prot, __builtin_return_address(0));
102}
103
104#endif /* __ASSEMBLY__ */
105
106#endif /* __MMU_H */

  1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef __MMU_H
  3#define __MMU_H
  4
  5/*
  6 * Privileged Space Mapping Buffer (PMB) definitions
  7 */
  8#define PMB_PASCR		0xff000070
  9#define PMB_IRMCR		0xff000078
 10
 11#define PASCR_SE		0x80000000
 12
 13#define PMB_ADDR		0xf6100000
 14#define PMB_DATA		0xf7100000
 15
 16#define NR_PMB_ENTRIES		16
 17
 18#define PMB_E_MASK		0x0000000f
 19#define PMB_E_SHIFT		8
 20
 21#define PMB_PFN_MASK		0xff000000
 22
 23#define PMB_SZ_16M		0x00000000
 24#define PMB_SZ_64M		0x00000010
 25#define PMB_SZ_128M		0x00000080
 26#define PMB_SZ_512M		0x00000090
 27#define PMB_SZ_MASK		PMB_SZ_512M
 28#define PMB_C			0x00000008
 29#define PMB_WT			0x00000001
 30#define PMB_UB			0x00000200
 31#define PMB_CACHE_MASK		(PMB_C | PMB_WT | PMB_UB)
 32#define PMB_V			0x00000100
 33
 34#define PMB_NO_ENTRY		(-1)
 35
 36#ifndef __ASSEMBLY__
 37#include <linux/errno.h>
 38#include <linux/threads.h>
 39#include <asm/page.h>
 40
 41/* Default "unsigned long" context */
 42typedef unsigned long mm_context_id_t[NR_CPUS];
 43
 44typedef struct {
 45#ifdef CONFIG_MMU
 46	mm_context_id_t		id;
 47	void			*vdso;
 48#else
 49	unsigned long		end_brk;
 50#endif
 51#ifdef CONFIG_BINFMT_ELF_FDPIC
 52	unsigned long		exec_fdpic_loadmap;
 53	unsigned long		interp_fdpic_loadmap;
 54#endif
 55} mm_context_t;
 56
 57#ifdef CONFIG_PMB
 58/* arch/sh/mm/pmb.c */
 59bool __in_29bit_mode(void);
 60
 61void pmb_init(void);
 62int pmb_bolt_mapping(unsigned long virt, phys_addr_t phys,
 63		     unsigned long size, pgprot_t prot);
 64void __iomem *pmb_remap_caller(phys_addr_t phys, unsigned long size,
 65			       pgprot_t prot, void *caller);
 66int pmb_unmap(void __iomem *addr);
 67
 68#else
 69
 70static inline int
 71pmb_bolt_mapping(unsigned long virt, phys_addr_t phys,
 72		 unsigned long size, pgprot_t prot)
 73{
 74	return -EINVAL;
 75}
 76
 77static inline void __iomem *
 78pmb_remap_caller(phys_addr_t phys, unsigned long size,
 79		 pgprot_t prot, void *caller)
 80{
 81	return NULL;
 82}
 83
 84static inline int pmb_unmap(void __iomem *addr)
 85{
 86	return -EINVAL;
 87}
 88
 89#define pmb_init(addr)		do { } while (0)
 90
 91#ifdef CONFIG_29BIT
 92#define __in_29bit_mode()	(1)
 93#else
 94#define __in_29bit_mode()	(0)
 95#endif
 96
 97#endif /* CONFIG_PMB */
 98
 99static inline void __iomem *
100pmb_remap(phys_addr_t phys, unsigned long size, pgprot_t prot)
101{
102	return pmb_remap_caller(phys, size, prot, __builtin_return_address(0));
103}
104
105#endif /* __ASSEMBLY__ */
106
107#endif /* __MMU_H */