1 // SPDX-License-Identifier: GPL-2.0
18 					 unsigned long size,  in get_entry_num_slots()  argument
22 	unsigned long align = 1UL << align_shift;  in get_entry_num_slots()  local
25 	if (md->type != EFI_CONVENTIONAL_MEMORY)  in get_entry_num_slots()
28 	if (md->attribute & EFI_MEMORY_HOT_PLUGGABLE)  in get_entry_num_slots()
32 	    (md->attribute & EFI_MEMORY_SP))  in get_entry_num_slots()
35 	region_end = min(md->phys_addr + md->num_pages * EFI_PAGE_SIZE - 1,  in get_entry_num_slots()
37 	if (region_end < size)  in get_entry_num_slots()
40 	first_slot = round_up(max(md->phys_addr, alloc_min), align);  in get_entry_num_slots()
41 	last_slot = round_down(region_end - size + 1, align);  in get_entry_num_slots()
46 	return ((unsigned long)(last_slot - first_slot) >> align_shift) + 1;  in get_entry_num_slots()
55 #define MD_NUM_SLOTS(md)	((md)->virt_addr)
57 efi_status_t efi_random_alloc(unsigned long size,  in efi_random_alloc()  argument
58 			      unsigned long align,  in efi_random_alloc()  argument
75 	if (align < EFI_ALLOC_ALIGN)  in efi_random_alloc()
76 		align = EFI_ALLOC_ALIGN;  in efi_random_alloc()
80 		alloc_min = align;  in efi_random_alloc()
82 	size = round_up(size, EFI_ALLOC_ALIGN);  in efi_random_alloc()
85 	for (map_offset = 0; map_offset < map->map_size; map_offset += map->desc_size) {  in efi_random_alloc()
86 		efi_memory_desc_t *md = (void *)map->map + map_offset;  in efi_random_alloc()
89 		slots = get_entry_num_slots(md, size, ilog2(align), alloc_min,  in efi_random_alloc()
93 		if (md->attribute & EFI_MEMORY_MORE_RELIABLE)  in efi_random_alloc()
116 	for (map_offset = 0; map_offset < map->map_size; map_offset += map->desc_size) {  in efi_random_alloc()
117 		efi_memory_desc_t *md = (void *)map->map + map_offset;  in efi_random_alloc()
122 		    !(md->attribute & EFI_MEMORY_MORE_RELIABLE))  in efi_random_alloc()
126 			target_slot -= MD_NUM_SLOTS(md);  in efi_random_alloc()
130 		target = round_up(max_t(u64, md->phys_addr, alloc_min), align) + target_slot * align;  in efi_random_alloc()
131 		pages = size / EFI_PAGE_SIZE;  in efi_random_alloc()