109cfefb7SHuacai Chen /* SPDX-License-Identifier: GPL-2.0 */ 209cfefb7SHuacai Chen #ifndef _LOONGARCH_SPARSEMEM_H 309cfefb7SHuacai Chen #define _LOONGARCH_SPARSEMEM_H 409cfefb7SHuacai Chen 509cfefb7SHuacai Chen #ifdef CONFIG_SPARSEMEM 609cfefb7SHuacai Chen 709cfefb7SHuacai Chen /* 809cfefb7SHuacai Chen * SECTION_SIZE_BITS 2^N: how big each section will be 909cfefb7SHuacai Chen * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space 1009cfefb7SHuacai Chen */ 1109cfefb7SHuacai Chen #define SECTION_SIZE_BITS 29 /* 2^29 = Largest Huge Page Size */ 1209cfefb7SHuacai Chen #define MAX_PHYSMEM_BITS 48 1309cfefb7SHuacai Chen 14*7b09f5afSFeiyang Chen #ifdef CONFIG_SPARSEMEM_VMEMMAP 15*7b09f5afSFeiyang Chen #define VMEMMAP_SIZE (sizeof(struct page) * (1UL << (cpu_pabits + 1 - PAGE_SHIFT))) 16*7b09f5afSFeiyang Chen #endif 17*7b09f5afSFeiyang Chen 1809cfefb7SHuacai Chen #endif /* CONFIG_SPARSEMEM */ 1909cfefb7SHuacai Chen 20*7b09f5afSFeiyang Chen #ifndef VMEMMAP_SIZE 21*7b09f5afSFeiyang Chen #define VMEMMAP_SIZE 0 /* 1, For FLATMEM; 2, For SPARSEMEM without VMEMMAP. */ 22*7b09f5afSFeiyang Chen #endif 23*7b09f5afSFeiyang Chen 2409cfefb7SHuacai Chen #ifdef CONFIG_MEMORY_HOTPLUG 2509cfefb7SHuacai Chen int memory_add_physaddr_to_nid(u64 addr); 2609cfefb7SHuacai Chen #define memory_add_physaddr_to_nid memory_add_physaddr_to_nid 2709cfefb7SHuacai Chen #endif 2809cfefb7SHuacai Chen 2909cfefb7SHuacai Chen #define INIT_MEMBLOCK_RESERVED_REGIONS (INIT_MEMBLOCK_REGIONS + NR_CPUS) 3009cfefb7SHuacai Chen 3109cfefb7SHuacai Chen #endif /* _LOONGARCH_SPARSEMEM_H */ 32