1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* Creation Date: <1999/11/16 00:47:06 samuel>
* Time-stamp: <2003/10/18 13:28:14 samuel>
*
* <ofmem.h>
*
*
*
* Copyright (C) 1999, 2002 Samuel Rydh (samuel@ibrium.se)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation
*
*/
#ifndef _H_OFMEM
#define _H_OFMEM
#include "openbios/stack.h"
typedef struct alloc_desc {
struct alloc_desc *next;
ucell size; /* size (including) this struct */
} alloc_desc_t;
typedef struct mem_range {
struct mem_range *next;
ucell start;
ucell size;
} range_t;
typedef struct trans {
struct trans *next;
ucell virt; /* chain is sorted by virt */
ucell size;
ucell phys;
ucell mode;
} translation_t;
/* ofmem private data */
typedef struct {
ucell ramsize;
char *next_malloc;
alloc_desc_t *mfree; /* list of free malloc blocks */
range_t *phys_range;
range_t *virt_range;
translation_t *trans; /* this is really a translation_t */
} ofmem_t;
/* TODO: temporary migration interface */
extern ofmem_t* ofmem_arch_get_private(void);
extern void* ofmem_arch_get_malloc_base(void);
extern ucell ofmem_arch_get_heap_top(void);
extern ucell ofmem_arch_get_virt_top(void);
extern ucell ofmem_arch_default_translation_mode( ucell phys );
extern void ofmem_arch_early_map_pages(ucell phys, ucell virt, ucell size,
ucell mode);
extern void ofmem_arch_unmap_pages(ucell virt, ucell size);
/* sparc64 uses this method */
extern int ofmem_map_page_range( ucell phys, ucell virt, ucell size,
ucell mode );
/* malloc interface */
extern void* ofmem_malloc( size_t size );
extern void ofmem_free( void *ptr );
extern void* ofmem_realloc( void *ptr, size_t size );
/* ofmem_common.c */
extern void ofmem_cleanup( void );
extern void ofmem_init( void );
/*
* register /memory and /virtual-memory handles
* ofmem module will update "available" and "translations" properties
* using these handles
*
* to disable updating /memory properties pass zero memory handle
*/
extern void ofmem_register( phandle_t ph_memory, phandle_t ph_mmu );
extern ucell ofmem_claim( ucell addr, ucell size, ucell align );
extern ucell ofmem_claim_phys( ucell mphys, ucell size, ucell align );
extern ucell ofmem_claim_virt( ucell mvirt, ucell size, ucell align );
extern int ofmem_map( ucell phys, ucell virt, ucell size, ucell mode );
extern int ofmem_unmap( ucell virt, ucell size );
extern void ofmem_release_phys( ucell phys, ucell size );
extern void ofmem_release_virt( ucell virt, ucell size );
extern ucell ofmem_translate( ucell virt, ucell *ret_mode );
#ifdef CONFIG_PPC
#define PAGE_SHIFT 12
ulong get_ram_top( void );
ulong get_ram_bottom( void );
#elif defined(CONFIG_SPARC32)
#define PAGE_SHIFT 12
/* arch/sparc32/lib.c */
struct mem;
extern struct mem cdvmem;
void mem_init(struct mem *t, char *begin, char *limit);
void *mem_alloc(struct mem *t, int size, int align);
int map_page(unsigned long va, uint64_t epa, int type);
void *map_io(uint64_t pa, int size);
#endif
#ifdef PAGE_SHIFT
#define PAGE_SIZE (1 << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE - 1))
#define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
#endif
#if defined(CONFIG_DEBUG_OFMEM)
# define OFMEM_TRACE(fmt, ...) do { printk("OFMEM: " fmt, ## __VA_ARGS__); } while (0)
#else
# define OFMEM_TRACE(fmt, ...) do {} while(0)
#endif
#endif /* _H_OFMEM */
|
