Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #ifndef _ASM_ARC_MMZONE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define _ASM_ARC_MMZONE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #ifdef CONFIG_DISCONTIGMEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) extern struct pglist_data node_data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define NODE_DATA(nid) (&node_data[nid])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static inline int pfn_to_nid(unsigned long pfn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	int is_end_low = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	if (IS_ENABLED(CONFIG_ARC_HAS_PAE40))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		is_end_low = pfn <= virt_to_pfn(0xFFFFFFFFUL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	 * node 0: lowmem:             0x8000_0000   to 0xFFFF_FFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	 * node 1: HIGHMEM w/o  PAE40: 0x0           to 0x7FFF_FFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	 *         HIGHMEM with PAE40: 0x1_0000_0000 to ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	if (pfn >= ARCH_PFN_OFFSET && is_end_low)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static inline int pfn_valid(unsigned long pfn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	int nid = pfn_to_nid(pfn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	return (pfn <= node_end_pfn(nid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #endif /* CONFIG_DISCONTIGMEM  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif