145 lines
4.7 KiB
C
145 lines
4.7 KiB
C
/*
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* Creation Date: <1999/11/16 00:47:06 samuel>
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* Time-stamp: <2003/10/18 13:28:14 samuel>
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*
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* <ofmem.h>
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*
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*
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*
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* Copyright (C) 1999, 2002 Samuel Rydh (samuel@ibrium.se)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation
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*
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*/
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#ifndef _H_OFMEM
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#define _H_OFMEM
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#include "kernel/stack.h"
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typedef struct alloc_desc {
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struct alloc_desc *next;
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ucell size; /* size (including) this struct */
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} alloc_desc_t;
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typedef struct mem_range {
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struct mem_range *next;
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phys_addr_t start; /* sizeof(phys) >= sizeof(virt), e.g SPARC32 */
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ucell size;
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} range_t;
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typedef struct trans {
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struct trans *next;
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ucell virt; /* chain is sorted by virt */
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ucell size;
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phys_addr_t phys;
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ucell mode;
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} translation_t;
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/* ofmem private data */
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typedef struct {
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ucell ramsize;
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char *next_malloc;
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alloc_desc_t *mfree; /* list of free malloc blocks */
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range_t *phys_range;
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range_t *virt_range;
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range_t *io_range;
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translation_t *trans; /* this is really a translation_t */
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} ofmem_t;
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/* structure for retained data */
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typedef struct {
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ucell magic;
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ucell numentries;
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range_t retain_phys_range[8]; /* physical memory that should survive a warm reset */
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} retain_t;
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/* TODO: temporary migration interface */
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extern ofmem_t* ofmem_arch_get_private(void);
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extern void* ofmem_arch_get_malloc_base(void);
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extern ucell ofmem_arch_get_heap_top(void);
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extern ucell ofmem_arch_get_virt_top(void);
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extern ucell ofmem_arch_get_iomem_base(void);
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extern ucell ofmem_arch_get_iomem_top(void);
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extern retain_t* ofmem_arch_get_retained(void);
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extern int ofmem_arch_get_physaddr_cellsize(void);
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extern int ofmem_arch_encode_physaddr(ucell *p, phys_addr_t value);
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extern int ofmem_arch_get_available_entry_size(phandle_t ph);
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extern void ofmem_arch_create_available_entry(phandle_t ph, ucell *availentry, phys_addr_t start, ucell size);
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extern int ofmem_arch_get_translation_entry_size(void);
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extern void ofmem_arch_create_translation_entry(ucell *transentry, translation_t *t);
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extern ucell ofmem_arch_default_translation_mode( phys_addr_t phys );
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extern ucell ofmem_arch_io_translation_mode( phys_addr_t phys );
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extern void ofmem_arch_map_pages(phys_addr_t phys, ucell virt, ucell size,
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ucell mode);
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extern void ofmem_arch_unmap_pages(ucell virt, ucell size);
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/* sparc64 uses this method */
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extern int ofmem_map_page_range( phys_addr_t phys, ucell virt, ucell size,
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ucell mode );
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/* Private functions for mapping between physical/virtual addresses */
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extern phys_addr_t va2pa(unsigned long va);
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extern unsigned long pa2va(phys_addr_t pa);
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/* malloc interface */
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extern int ofmem_posix_memalign( void **memptr, size_t alignment, size_t size );
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extern void* ofmem_malloc( size_t size );
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extern void ofmem_free( void *ptr );
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extern void* ofmem_realloc( void *ptr, size_t size );
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/* ofmem_common.c */
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extern void ofmem_cleanup( void );
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extern void ofmem_init( void );
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/*
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* register /memory and /virtual-memory handles
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* ofmem module will update "available" and "translations" properties
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* using these handles
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*
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* to disable updating /memory properties pass zero memory handle
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*/
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extern void ofmem_register( phandle_t ph_memory, phandle_t ph_mmu );
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extern ucell ofmem_claim( ucell addr, ucell size, ucell align );
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extern phys_addr_t ofmem_claim_phys( phys_addr_t mphys, ucell size, ucell align );
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extern ucell ofmem_claim_virt( ucell mvirt, ucell size, ucell align );
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extern ucell ofmem_claim_io( ucell virt, ucell size, ucell align );
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extern phys_addr_t ofmem_retain( phys_addr_t phys, ucell size, ucell align );
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extern int ofmem_map( phys_addr_t phys, ucell virt, ucell size, ucell mode );
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extern int ofmem_unmap( ucell virt, ucell size );
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extern ucell ofmem_map_io( phys_addr_t phys, ucell size );
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extern void ofmem_release( ucell virt, ucell size );
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extern void ofmem_release_phys( phys_addr_t phys, ucell size );
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extern void ofmem_release_virt( ucell virt, ucell size );
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extern void ofmem_release_io( ucell virt, ucell size );
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extern phys_addr_t ofmem_translate( ucell virt, ucell *ret_mode );
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/* memory and virtual-memory nodes */
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extern phandle_t s_phandle_memory;
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extern phandle_t s_phandle_mmu;
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (~(PAGE_SIZE - 1))
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#define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
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#if defined(CONFIG_DEBUG_OFMEM)
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#define DEBUG_OFMEM 1
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#else
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#define DEBUG_OFMEM 0
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#endif
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#define OFMEM_TRACE(fmt, ...) do { \
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if (DEBUG_OFMEM) { \
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printk("OFMEM: " fmt, ## __VA_ARGS__); \
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} \
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} while (0);
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#endif /* _H_OFMEM */
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