Orange Pi5 kernel

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com)
 */
 
#ifndef _ASM_ARC_MMZONE_H
#define _ASM_ARC_MMZONE_H
 
#ifdef CONFIG_DISCONTIGMEM
 
extern struct pglist_data node_data[];
#define NODE_DATA(nid) (&node_data[nid])
 
static inline int pfn_to_nid(unsigned long pfn)
{
<------>int is_end_low = 1;
 
<------>if (IS_ENABLED(CONFIG_ARC_HAS_PAE40))
<------><------>is_end_low = pfn <= virt_to_pfn(0xFFFFFFFFUL);
 
<------>/*
<------> * node 0: lowmem:             0x8000_0000   to 0xFFFF_FFFF
<------> * node 1: HIGHMEM w/o  PAE40: 0x0           to 0x7FFF_FFFF
<------> *         HIGHMEM with PAE40: 0x1_0000_0000 to ...
<------> */
<------>if (pfn >= ARCH_PFN_OFFSET && is_end_low)
<------><------>return 0;
 
<------>return 1;
}
 
static inline int pfn_valid(unsigned long pfn)
{
<------>int nid = pfn_to_nid(pfn);
 
<------>return (pfn <= node_end_pfn(nid));
}
#endif /* CONFIG_DISCONTIGMEM  */
 
#endif