| /* |
| * 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 "kernel/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; |
| phys_addr_t start; /* sizeof(phys) >= sizeof(virt), e.g SPARC32 */ |
| ucell size; |
| } range_t; |
| |
| typedef struct trans { |
| struct trans *next; |
| ucell virt; /* chain is sorted by virt */ |
| ucell size; |
| phys_addr_t 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; |
| range_t *io_range; |
| |
| translation_t *trans; /* this is really a translation_t */ |
| } ofmem_t; |
| |
| /* structure for retained data */ |
| typedef struct { |
| ucell magic; |
| ucell numentries; |
| range_t retain_phys_range[8]; /* physical memory that should survive a warm reset */ |
| } retain_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_get_iomem_base(void); |
| extern ucell ofmem_arch_get_iomem_top(void); |
| extern retain_t* ofmem_arch_get_retained(void); |
| extern int ofmem_arch_get_physaddr_cellsize(void); |
| extern int ofmem_arch_encode_physaddr(ucell *p, phys_addr_t value); |
| extern int ofmem_arch_get_available_entry_size(phandle_t ph); |
| extern void ofmem_arch_create_available_entry(phandle_t ph, ucell *availentry, phys_addr_t start, ucell size); |
| extern int ofmem_arch_get_translation_entry_size(void); |
| extern void ofmem_arch_create_translation_entry(ucell *transentry, translation_t *t); |
| extern ucell ofmem_arch_default_translation_mode( phys_addr_t phys ); |
| extern ucell ofmem_arch_io_translation_mode( phys_addr_t phys ); |
| extern void ofmem_arch_map_pages(phys_addr_t 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( phys_addr_t phys, ucell virt, ucell size, |
| ucell mode ); |
| |
| /* Private functions for mapping between physical/virtual addresses */ |
| extern phys_addr_t va2pa(unsigned long va); |
| extern unsigned long pa2va(phys_addr_t pa); |
| |
| /* malloc interface */ |
| extern int ofmem_posix_memalign( void **memptr, size_t alignment, size_t size ); |
| 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 phys_addr_t ofmem_claim_phys( phys_addr_t mphys, ucell size, ucell align ); |
| extern ucell ofmem_claim_virt( ucell mvirt, ucell size, ucell align ); |
| extern ucell ofmem_claim_io( ucell virt, ucell size, ucell align ); |
| |
| extern phys_addr_t ofmem_retain( phys_addr_t phys, ucell size, ucell align ); |
| |
| extern int ofmem_map( phys_addr_t phys, ucell virt, ucell size, ucell mode ); |
| extern int ofmem_unmap( ucell virt, ucell size ); |
| extern ucell ofmem_map_io( phys_addr_t phys, ucell size ); |
| |
| extern void ofmem_release( ucell virt, ucell size ); |
| extern void ofmem_release_phys( phys_addr_t phys, ucell size ); |
| extern void ofmem_release_virt( ucell virt, ucell size ); |
| extern void ofmem_release_io( ucell virt, ucell size ); |
| extern phys_addr_t ofmem_translate( ucell virt, ucell *ret_mode ); |
| |
| /* memory and virtual-memory nodes */ |
| extern phandle_t s_phandle_memory; |
| extern phandle_t s_phandle_mmu; |
| |
| #define PAGE_SIZE (1 << PAGE_SHIFT) |
| #define PAGE_MASK (~(PAGE_SIZE - 1)) |
| #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK) |
| |
| #if defined(CONFIG_DEBUG_OFMEM) |
| #define DEBUG_OFMEM 1 |
| #else |
| #define DEBUG_OFMEM 0 |
| #endif |
| |
| #define OFMEM_TRACE(fmt, ...) do { \ |
| if (DEBUG_OFMEM) { \ |
| printk("OFMEM: " fmt, ## __VA_ARGS__); \ |
| } \ |
| } while (0); |
| |
| #endif /* _H_OFMEM */ |