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/*
* 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 */
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