| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| David Gibson | 1fc8b4e | 2005-11-02 14:48:36 +1100 | [diff] [blame] | 2 | #ifndef _ASM_POWERPC_SPARSEMEM_H |
| 3 | #define _ASM_POWERPC_SPARSEMEM_H 1 |
| Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 4 | #ifdef __KERNEL__ |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 5 | |
| 6 | #ifdef CONFIG_SPARSEMEM |
| 7 | /* |
| 8 | * SECTION_SIZE_BITS 2^N: how big each section will be |
| 9 | * MAX_PHYSADDR_BITS 2^N: how much physical address space we have |
| 10 | * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space |
| 11 | */ |
| 12 | #define SECTION_SIZE_BITS 24 |
| Geoff Levand | 261efc3 | 2006-11-23 00:46:57 +0100 | [diff] [blame] | 13 | |
| Aneesh Kumar K.V | 048ee09 | 2012-09-10 02:52:55 +0000 | [diff] [blame] | 14 | #define MAX_PHYSADDR_BITS 46 |
| 15 | #define MAX_PHYSMEM_BITS 46 |
| Andy Whitcroft | 145e664 | 2005-06-23 00:08:03 -0700 | [diff] [blame] | 16 | |
| Tony Breeds | db7f37d | 2008-07-01 11:30:06 +1000 | [diff] [blame] | 17 | #endif /* CONFIG_SPARSEMEM */ |
| 18 | |
| Mike Kravetz | 54b7924 | 2005-11-07 16:25:48 -0800 | [diff] [blame] | 19 | #ifdef CONFIG_MEMORY_HOTPLUG |
| Anton Blanchard | a119409 | 2011-08-10 20:44:24 +0000 | [diff] [blame] | 20 | extern int create_section_mapping(unsigned long start, unsigned long end); |
| Badari Pulavarty | 52db9b4 | 2008-03-28 11:37:21 +1100 | [diff] [blame] | 21 | extern int remove_section_mapping(unsigned long start, unsigned long end); |
| Michael Ellerman | 36b390f | 2017-02-15 19:54:55 +1100 | [diff] [blame] | 22 | |
| 23 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 24 | extern void resize_hpt_for_hotplug(unsigned long new_mem_size); |
| 25 | #else |
| 26 | static inline void resize_hpt_for_hotplug(unsigned long new_mem_size) { } |
| 27 | #endif |
| 28 | |
| Mike Kravetz | 237a098 | 2005-12-05 12:06:42 -0800 | [diff] [blame] | 29 | #ifdef CONFIG_NUMA |
| 30 | extern int hot_add_scn_to_nid(unsigned long scn_addr); |
| 31 | #else |
| 32 | static inline int hot_add_scn_to_nid(unsigned long scn_addr) |
| 33 | { |
| 34 | return 0; |
| 35 | } |
| 36 | #endif /* CONFIG_NUMA */ |
| Mike Kravetz | 54b7924 | 2005-11-07 16:25:48 -0800 | [diff] [blame] | 37 | #endif /* CONFIG_MEMORY_HOTPLUG */ |
| 38 | |
| Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 39 | #endif /* __KERNEL__ */ |
| David Gibson | 1fc8b4e | 2005-11-02 14:48:36 +1100 | [diff] [blame] | 40 | #endif /* _ASM_POWERPC_SPARSEMEM_H */ |