mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 01:50:54 +07:00
c5df7f7751
Add a flag to let a platform ioremap memory regions marked as reserved. This flag will be used later by the Nintendo Wii support code to allow ioremapping the I/O region sitting between MEM1 and MEM2 and marked as reserved RAM in the patch "wii: use both mem1 and mem2 as ram". This will no longer be needed when proper discontig memory support for 32-bit PowerPC is added to the kernel. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
#ifndef _LINUX_LMB_H
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#define _LINUX_LMB_H
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#ifdef __KERNEL__
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/*
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* Logical memory blocks.
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*
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* Copyright (C) 2001 Peter Bergner, IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/mm.h>
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#define MAX_LMB_REGIONS 128
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struct lmb_property {
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u64 base;
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u64 size;
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};
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struct lmb_region {
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unsigned long cnt;
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u64 size;
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struct lmb_property region[MAX_LMB_REGIONS+1];
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};
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struct lmb {
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unsigned long debug;
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u64 rmo_size;
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struct lmb_region memory;
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struct lmb_region reserved;
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};
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extern struct lmb lmb;
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extern void __init lmb_init(void);
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extern void __init lmb_analyze(void);
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extern long lmb_add(u64 base, u64 size);
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extern long lmb_remove(u64 base, u64 size);
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extern long __init lmb_reserve(u64 base, u64 size);
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extern u64 __init lmb_alloc_nid(u64 size, u64 align, int nid,
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u64 (*nid_range)(u64, u64, int *));
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extern u64 __init lmb_alloc(u64 size, u64 align);
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extern u64 __init lmb_alloc_base(u64 size,
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u64, u64 max_addr);
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extern u64 __init __lmb_alloc_base(u64 size,
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u64 align, u64 max_addr);
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extern u64 __init lmb_phys_mem_size(void);
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extern u64 lmb_end_of_DRAM(void);
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extern void __init lmb_enforce_memory_limit(u64 memory_limit);
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extern int __init lmb_is_reserved(u64 addr);
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extern int lmb_is_region_reserved(u64 base, u64 size);
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extern int lmb_find(struct lmb_property *res);
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extern void lmb_dump_all(void);
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static inline u64
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lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
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{
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return type->region[region_nr].size;
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}
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static inline u64
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lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
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{
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return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
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}
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static inline u64
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lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
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{
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return type->region[region_nr].base >> PAGE_SHIFT;
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}
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static inline u64
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lmb_end_pfn(struct lmb_region *type, unsigned long region_nr)
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{
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return lmb_start_pfn(type, region_nr) +
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lmb_size_pages(type, region_nr);
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}
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#include <asm/lmb.h>
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#endif /* __KERNEL__ */
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#endif /* _LINUX_LMB_H */
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