2 * Creation Date: <1999/11/16 00:47:06 samuel>
3 * Time-stamp: <2003/10/18 13:28:14 samuel>
9 * Copyright (C) 1999, 2002 Samuel Rydh (samuel@ibrium.se)
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
20 #include "kernel/stack.h"
22 typedef struct alloc_desc {
23 struct alloc_desc *next;
24 ucell size; /* size (including) this struct */
27 typedef struct mem_range {
28 struct mem_range *next;
29 phys_addr_t start; /* sizeof(phys) >= sizeof(virt), e.g SPARC32 */
33 typedef struct trans {
35 ucell virt; /* chain is sorted by virt */
41 /* ofmem private data */
45 alloc_desc_t *mfree; /* list of free malloc blocks */
51 translation_t *trans; /* this is really a translation_t */
54 /* structure for retained data */
58 range_t retain_phys_range[8]; /* physical memory that should survive a warm reset */
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 ucell ofmem_arch_get_iomem_base(void);
67 extern ucell ofmem_arch_get_iomem_top(void);
68 extern retain_t* ofmem_arch_get_retained(void);
69 extern int ofmem_arch_get_physaddr_cellsize(void);
70 extern int ofmem_arch_encode_physaddr(ucell *p, phys_addr_t value);
71 extern int ofmem_arch_get_available_entry_size(phandle_t ph);
72 extern void ofmem_arch_create_available_entry(phandle_t ph, ucell *availentry, phys_addr_t start, ucell size);
73 extern int ofmem_arch_get_translation_entry_size(void);
74 extern void ofmem_arch_create_translation_entry(ucell *transentry, translation_t *t);
75 extern ucell ofmem_arch_default_translation_mode( phys_addr_t phys );
76 extern ucell ofmem_arch_io_translation_mode( phys_addr_t phys );
77 extern void ofmem_arch_map_pages(phys_addr_t phys, ucell virt, ucell size,
79 extern void ofmem_arch_unmap_pages(ucell virt, ucell size);
80 /* sparc64 uses this method */
81 extern int ofmem_map_page_range( phys_addr_t phys, ucell virt, ucell size,
84 /* Private functions for mapping between physical/virtual addresses */
85 extern phys_addr_t va2pa(unsigned long va);
86 extern unsigned long pa2va(phys_addr_t pa);
88 /* malloc interface */
89 extern int ofmem_posix_memalign( void **memptr, size_t alignment, size_t size );
90 extern void* ofmem_malloc( size_t size );
91 extern void ofmem_free( void *ptr );
92 extern void* ofmem_realloc( void *ptr, size_t size );
96 extern void ofmem_cleanup( void );
97 extern void ofmem_init( void );
100 * register /memory and /virtual-memory handles
101 * ofmem module will update "available" and "translations" properties
102 * using these handles
104 * to disable updating /memory properties pass zero memory handle
106 extern void ofmem_register( phandle_t ph_memory, phandle_t ph_mmu );
108 extern ucell ofmem_claim( ucell addr, ucell size, ucell align );
109 extern phys_addr_t ofmem_claim_phys( phys_addr_t mphys, ucell size, ucell align );
110 extern ucell ofmem_claim_virt( ucell mvirt, ucell size, ucell align );
111 extern ucell ofmem_claim_io( ucell virt, ucell size, ucell align );
113 extern phys_addr_t ofmem_retain( phys_addr_t phys, ucell size, ucell align );
115 extern int ofmem_map( phys_addr_t phys, ucell virt, ucell size, ucell mode );
116 extern int ofmem_unmap( ucell virt, ucell size );
117 extern ucell ofmem_map_io( phys_addr_t phys, ucell size );
119 extern void ofmem_release( ucell virt, ucell size );
120 extern void ofmem_release_phys( phys_addr_t phys, ucell size );
121 extern void ofmem_release_virt( ucell virt, ucell size );
122 extern void ofmem_release_io( ucell virt, ucell size );
123 extern phys_addr_t ofmem_translate( ucell virt, ucell *ret_mode );
125 /* memory and virtual-memory nodes */
126 extern phandle_t s_phandle_memory;
127 extern phandle_t s_phandle_mmu;
129 #define PAGE_SIZE (1 << PAGE_SHIFT)
130 #define PAGE_MASK (~(PAGE_SIZE - 1))
131 #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
133 #if defined(CONFIG_DEBUG_OFMEM)
134 #define DEBUG_OFMEM 1
136 #define DEBUG_OFMEM 0
139 #define OFMEM_TRACE(fmt, ...) do { \
141 printk("OFMEM: " fmt, ## __VA_ARGS__); \
145 #endif /* _H_OFMEM */