1 /* SPDX-License-Identifier: GPL-2.0-or-later */
28  * enum memblock_flags - definition of memory region attributes
30  * @MEMBLOCK_HOTPLUG: memory region indicated in the firmware-provided memory
40  * via a driver, and never indicated in the firmware-provided memory map as
56  * struct memblock_region - represents a memory region
58  * @size: size of the region
64 	phys_addr_t size;  member
72  * struct memblock_type - collection of memory regions of certain type
74  * @max: size of the allocated array
75  * @total_size: size of all regions
88  * struct memblock - memblock allocator metadata
114 int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid,
116 int memblock_add(phys_addr_t base, phys_addr_t size);
117 int memblock_remove(phys_addr_t base, phys_addr_t size);
118 int memblock_phys_free(phys_addr_t base, phys_addr_t size);
119 int memblock_reserve(phys_addr_t base, phys_addr_t size);
121 int memblock_physmem_add(phys_addr_t base, phys_addr_t size);
123 void memblock_trim_memory(phys_addr_t align);
127 			      phys_addr_t base, phys_addr_t size);
129 int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size);
130 int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size);
131 int memblock_mark_mirror(phys_addr_t base, phys_addr_t size);
132 int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);
133 int memblock_clear_nomap(phys_addr_t base, phys_addr_t size);
134 int memblock_reserved_mark_noinit(phys_addr_t base, phys_addr_t size);
137 void memblock_free(void *ptr, size_t size);
151 void memblock_free_late(phys_addr_t base, phys_addr_t size);
165  * for_each_physmem_range - iterate through physmem areas not included in type.
178  * __for_each_mem_range - iterate through memblock areas from type_a and not
198  * __for_each_mem_range_rev - reverse iterate through memblock areas from
219  * for_each_mem_range - iterate through memory areas.
230  * for_each_mem_range_rev - reverse iterate through memblock areas from
242  * for_each_reserved_mem_range - iterate over all reserved memblock areas
256 	return m->flags & MEMBLOCK_HOTPLUG;  in memblock_is_hotpluggable()
261 	return m->flags & MEMBLOCK_MIRROR;  in memblock_is_mirror()
266 	return m->flags & MEMBLOCK_NOMAP;  in memblock_is_nomap()
271 	return m->flags & MEMBLOCK_RSRV_NOINIT;  in memblock_is_reserved_noinit()
276 	return m->flags & MEMBLOCK_DRIVER_MANAGED;  in memblock_is_driver_managed()
285  * for_each_mem_pfn_range - early memory pfn range iterator
295 	for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \
304  * for_each_free_mem_pfn_range_in_zone_from - iterate through zone specific
322  * for_each_free_mem_range - iterate through free memblock areas
338  * for_each_free_mem_range_reverse - rev-iterate through free memblock areas
354 int memblock_set_node(phys_addr_t base, phys_addr_t size,
360 	r->nid = nid;  in memblock_set_region_node()
365 	return r->nid;  in memblock_get_region_node()
394 phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
396 phys_addr_t memblock_alloc_range_nid(phys_addr_t size,
397 				      phys_addr_t align, phys_addr_t start,
399 phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
401 static __always_inline phys_addr_t memblock_phys_alloc(phys_addr_t size,  in memblock_phys_alloc()  argument
402 						       phys_addr_t align)  in memblock_phys_alloc()  argument
404 	return memblock_phys_alloc_range(size, align, 0,  in memblock_phys_alloc()
408 void *memblock_alloc_exact_nid_raw(phys_addr_t size, phys_addr_t align,
411 void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align,
414 void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,
418 static __always_inline void *memblock_alloc(phys_addr_t size, phys_addr_t align)  in memblock_alloc()  argument
420 	return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,  in memblock_alloc()
424 void *__memblock_alloc_or_panic(phys_addr_t size, phys_addr_t align,
427 #define memblock_alloc_or_panic(size, align)    \  argument
428 	 __memblock_alloc_or_panic(size, align, __func__)
430 static inline void *memblock_alloc_raw(phys_addr_t size,  in memblock_alloc_raw()  argument
431 					       phys_addr_t align)  in memblock_alloc_raw()  argument
433 	return memblock_alloc_try_nid_raw(size, align, MEMBLOCK_LOW_LIMIT,  in memblock_alloc_raw()
438 static inline void *memblock_alloc_from(phys_addr_t size,  in memblock_alloc_from()  argument
439 						phys_addr_t align,  in memblock_alloc_from()  argument
442 	return memblock_alloc_try_nid(size, align, min_addr,  in memblock_alloc_from()
446 static inline void *memblock_alloc_low(phys_addr_t size,  in memblock_alloc_low()  argument
447 					       phys_addr_t align)  in memblock_alloc_low()  argument
449 	return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,  in memblock_alloc_low()
453 static inline void *memblock_alloc_node(phys_addr_t size,  in memblock_alloc_node()  argument
454 						phys_addr_t align, int nid)  in memblock_alloc_node()  argument
456 	return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,  in memblock_alloc_node()
461  * Set the allocation direction to bottom-up or top-down.
469  * Check if the allocation direction is bottom-up or not.
471  * in bottom-up direction.
484 void memblock_cap_memory_range(phys_addr_t base, phys_addr_t size);
488 bool memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
490 bool memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
495  * memblock_set_current_limit - Set the current allocation limit to allow
514  * memblock_region_memory_base_pfn - get the lowest pfn of the memory region
521 	return PFN_UP(reg->base);  in memblock_region_memory_base_pfn()
525  * memblock_region_memory_end_pfn - get the end pfn of the memory region
532 	return PFN_DOWN(reg->base + reg->size);  in memblock_region_memory_end_pfn()
536  * memblock_region_reserved_base_pfn - get the lowest pfn of the reserved region
543 	return PFN_DOWN(reg->base);  in memblock_region_reserved_base_pfn()
547  * memblock_region_reserved_end_pfn - get the end pfn of the reserved region
554 	return PFN_UP(reg->base + reg->size);  in memblock_region_reserved_end_pfn()
558  * for_each_mem_region - iterate over memory regions
567  * for_each_reserved_mem_region - itereate over reserved memory regions