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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
*/
#ifndef _LINUX_BOOTMEM_H
#define _LINUX_BOOTMEM_H
#include <linux/mmzone.h>
#include <linux/mm_types.h>
#include <asm/dma.h>
#include <asm/processor.h>
/*
* simple boot-time physical memory area allocator.
*/
extern unsigned long max_low_pfn;
extern unsigned long min_low_pfn;
/*
* highest page
*/
extern unsigned long max_pfn;
/*
* highest possible page
*/
extern unsigned long long max_possible_pfn;
extern unsigned long memblock_free_all(void);
extern void reset_node_managed_pages(pg_data_t *pgdat);
extern void reset_all_zones_managed_pages(void);
/* We are using top down, so it is safe to use 0 here */
#define BOOTMEM_LOW_LIMIT 0
#ifndef ARCH_LOW_ADDRESS_LIMIT
#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
#endif
/* FIXME: use MEMBLOCK_ALLOC_* variants here */
#define BOOTMEM_ALLOC_ACCESSIBLE 0
#define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0)
/* FIXME: Move to memblock.h at a point where we remove nobootmem.c */
void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align,
phys_addr_t min_addr,
phys_addr_t max_addr, int nid);
void *memblock_alloc_try_nid_nopanic(phys_addr_t size,
phys_addr_t align, phys_addr_t min_addr,
phys_addr_t max_addr, int nid);
void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,
phys_addr_t min_addr, phys_addr_t max_addr, int nid);
void __memblock_free_early(phys_addr_t base, phys_addr_t size);
void __memblock_free_late(phys_addr_t base, phys_addr_t size);
static inline void * __init memblock_alloc(
phys_addr_t size, phys_addr_t align)
{
return memblock_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
static inline void * __init memblock_alloc_raw(
phys_addr_t size, phys_addr_t align)
{
return memblock_alloc_try_nid_raw(size, align, BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
static inline void * __init memblock_alloc_from(
phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
{
return memblock_alloc_try_nid(size, align, min_addr,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
static inline void * __init memblock_alloc_nopanic(
phys_addr_t size, phys_addr_t align)
{
return memblock_alloc_try_nid_nopanic(size, align,
BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
static inline void * __init memblock_alloc_low(
phys_addr_t size, phys_addr_t align)
{
return memblock_alloc_try_nid(size, align,
BOOTMEM_LOW_LIMIT,
ARCH_LOW_ADDRESS_LIMIT,
NUMA_NO_NODE);
}
static inline void * __init memblock_alloc_low_nopanic(
phys_addr_t size, phys_addr_t align)
{
return memblock_alloc_try_nid_nopanic(size, align,
BOOTMEM_LOW_LIMIT,
ARCH_LOW_ADDRESS_LIMIT,
NUMA_NO_NODE);
}
static inline void * __init memblock_alloc_from_nopanic(
phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
{
return memblock_alloc_try_nid_nopanic(size, align, min_addr,
BOOTMEM_ALLOC_ACCESSIBLE,
NUMA_NO_NODE);
}
static inline void * __init memblock_alloc_node(
phys_addr_t size, phys_addr_t align, int nid)
{
return memblock_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE, nid);
}
static inline void * __init memblock_alloc_node_nopanic(
phys_addr_t size, int nid)
{
return memblock_alloc_try_nid_nopanic(size, 0, BOOTMEM_LOW_LIMIT,
BOOTMEM_ALLOC_ACCESSIBLE,
nid);
}
static inline void __init memblock_free_early(
phys_addr_t base, phys_addr_t size)
{
__memblock_free_early(base, size);
}
static inline void __init memblock_free_early_nid(
phys_addr_t base, phys_addr_t size, int nid)
{
__memblock_free_early(base, size);
}
static inline void __init memblock_free_late(
phys_addr_t base, phys_addr_t size)
{
__memblock_free_late(base, size);
}
extern void *alloc_large_system_hash(const char *tablename,
unsigned long bucketsize,
unsigned long numentries,
int scale,
int flags,
unsigned int *_hash_shift,
unsigned int *_hash_mask,
unsigned long low_limit,
unsigned long high_limit);
#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
#define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min
* shift passed via *_hash_shift */
#define HASH_ZERO 0x00000004 /* Zero allocated hash table */
/* Only NUMA needs hash distribution. 64bit NUMA architectures have
* sufficient vmalloc space.
*/
#ifdef CONFIG_NUMA
#define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT)
extern int hashdist; /* Distribute hashes across NUMA nodes? */
#else
#define hashdist (0)
#endif
#endif /* _LINUX_BOOTMEM_H */
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