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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#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 */