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 (samuel@ibrium.se) 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 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, 78 ucell mode); 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, 82 ucell mode ); 83 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); 87 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 ); 93 94 /* ofmem_common.c */ 95 96 extern void ofmem_cleanup( void ); 97 extern void ofmem_init( void ); 98 99 /* 100 * register /memory and /virtual-memory handles 101 * ofmem module will update "available" and "translations" properties 102 * using these handles 103 * 104 * to disable updating /memory properties pass zero memory handle 105 */ 106 extern void ofmem_register( phandle_t ph_memory, phandle_t ph_mmu ); 107 108 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 ); 112 113 extern phys_addr_t ofmem_retain( phys_addr_t phys, ucell size, ucell align ); 114 115 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 ); 118 119 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 ); 124 125 /* memory and virtual-memory nodes */ 126 extern phandle_t s_phandle_memory; 127 extern phandle_t s_phandle_mmu; 128 129 #define PAGE_SIZE (1 << PAGE_SHIFT) 130 #define PAGE_MASK (~(PAGE_SIZE - 1)) 131 #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK) 132 133 #if defined(CONFIG_DEBUG_OFMEM) 134 #define DEBUG_OFMEM 1 135 #else 136 #define DEBUG_OFMEM 0 137 #endif 138 139 #define OFMEM_TRACE(fmt, ...) do { \ 140 if (DEBUG_OFMEM) { \ 141 printk("OFMEM: " fmt, ## __VA_ARGS__); \ 142 } \ 143 } while (0); 144 145 #endif /* _H_OFMEM */ 146