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1.1 root 1: /*
2: * Creation Date: <1999/11/16 00:47:06 samuel>
3: * Time-stamp: <2003/10/18 13:28:14 samuel>
4: *
5: * <ofmem.h>
6: *
7: *
8: *
9: * Copyright (C) 1999, 2002 Samuel Rydh ([email protected])
10: *
11: * This program is free software; you can redistribute it and/or
12: * modify it under the terms of the GNU General Public License
13: * as published by the Free Software Foundation
14: *
15: */
16:
17: #ifndef _H_OFMEM
18: #define _H_OFMEM
19:
20: #include "kernel/stack.h"
21:
22: typedef struct alloc_desc {
23: struct alloc_desc *next;
24: ucell size; /* size (including) this struct */
25: } alloc_desc_t;
26:
27: typedef struct mem_range {
28: struct mem_range *next;
29: phys_addr_t start; /* sizeof(phys) >= sizeof(virt), e.g SPARC32 */
30: ucell size;
31: } range_t;
32:
33: typedef struct trans {
34: struct trans *next;
35: ucell virt; /* chain is sorted by virt */
36: ucell size;
37: phys_addr_t phys;
38: ucell mode;
39: } translation_t;
40:
41: /* ofmem private data */
42: typedef struct {
43: ucell ramsize;
44: char *next_malloc;
45: alloc_desc_t *mfree; /* list of free malloc blocks */
46:
47: range_t *phys_range;
48: range_t *virt_range;
49: range_t *io_range;
50:
51: translation_t *trans; /* this is really a translation_t */
52: } ofmem_t;
53:
54: /* structure for retained data */
55: typedef struct {
56: ucell magic;
57: ucell numentries;
58: range_t retain_phys_range[8]; /* physical memory that should survive a warm reset */
59: } retain_t;
60:
61: /* TODO: temporary migration interface */
62: extern ofmem_t* ofmem_arch_get_private(void);
63: extern void* ofmem_arch_get_malloc_base(void);
64: extern ucell ofmem_arch_get_heap_top(void);
65: extern ucell ofmem_arch_get_virt_top(void);
66: extern phys_addr_t ofmem_arch_get_phys_top(void);
67: extern ucell ofmem_arch_get_iomem_base(void);
68: extern ucell ofmem_arch_get_iomem_top(void);
69: extern retain_t* ofmem_arch_get_retained(void);
1.1.1.2 ! root 70: extern int ofmem_arch_get_physaddr_cellsize(void);
! 71: extern int ofmem_arch_encode_physaddr(ucell *p, phys_addr_t value);
1.1 root 72: extern int ofmem_arch_get_available_entry_size(phandle_t ph);
73: extern void ofmem_arch_create_available_entry(phandle_t ph, ucell *availentry, phys_addr_t start, ucell size);
74: extern int ofmem_arch_get_translation_entry_size(void);
75: extern void ofmem_arch_create_translation_entry(ucell *transentry, translation_t *t);
76: extern ucell ofmem_arch_default_translation_mode( phys_addr_t phys );
77: extern ucell ofmem_arch_io_translation_mode( phys_addr_t phys );
1.1.1.2 ! root 78: extern void ofmem_arch_map_pages(phys_addr_t phys, ucell virt, ucell size,
1.1 root 79: ucell mode);
80: extern void ofmem_arch_unmap_pages(ucell virt, ucell size);
81: /* sparc64 uses this method */
82: extern int ofmem_map_page_range( phys_addr_t phys, ucell virt, ucell size,
83: ucell mode );
84:
85: /* Private functions for mapping between physical/virtual addresses */
86: extern phys_addr_t va2pa(unsigned long va);
87: extern unsigned long pa2va(phys_addr_t pa);
88:
89: /* malloc interface */
90: extern int ofmem_posix_memalign( void **memptr, size_t alignment, size_t size );
91: extern void* ofmem_malloc( size_t size );
92: extern void ofmem_free( void *ptr );
93: extern void* ofmem_realloc( void *ptr, size_t size );
94:
95: /* ofmem_common.c */
96:
97: extern void ofmem_cleanup( void );
98: extern void ofmem_init( void );
99:
100: /*
101: * register /memory and /virtual-memory handles
102: * ofmem module will update "available" and "translations" properties
103: * using these handles
104: *
105: * to disable updating /memory properties pass zero memory handle
106: */
107: extern void ofmem_register( phandle_t ph_memory, phandle_t ph_mmu );
108:
109: extern ucell ofmem_claim( ucell addr, ucell size, ucell align );
110: extern phys_addr_t ofmem_claim_phys( phys_addr_t mphys, ucell size, ucell align );
111: extern ucell ofmem_claim_virt( ucell mvirt, ucell size, ucell align );
112: extern ucell ofmem_claim_io( ucell virt, ucell size, ucell align );
113:
114: extern phys_addr_t ofmem_retain( phys_addr_t phys, ucell size, ucell align );
115:
116: extern int ofmem_map( phys_addr_t phys, ucell virt, ucell size, ucell mode );
117: extern int ofmem_unmap( ucell virt, ucell size );
118: extern ucell ofmem_map_io( phys_addr_t phys, ucell size );
119:
120: extern void ofmem_release( ucell virt, ucell size );
121: extern void ofmem_release_phys( phys_addr_t phys, ucell size );
122: extern void ofmem_release_virt( ucell virt, ucell size );
123: extern phys_addr_t ofmem_translate( ucell virt, ucell *ret_mode );
124:
125: /* memory and virtual-memory nodes */
126: extern phandle_t s_phandle_memory;
127: extern phandle_t s_phandle_mmu;
128:
129: /* Currently the same for all architectures */
130: #define PAGE_SHIFT 12
131:
132: #define PAGE_SIZE (1 << PAGE_SHIFT)
133: #define PAGE_MASK (~(PAGE_SIZE - 1))
134: #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
135:
136: #if defined(CONFIG_DEBUG_OFMEM)
137: # define OFMEM_TRACE(fmt, ...) do { printk("OFMEM: " fmt, ## __VA_ARGS__); } while (0)
138: #else
139: # define OFMEM_TRACE(fmt, ...) do {} while(0)
140: #endif
141:
142: #endif /* _H_OFMEM */
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