asm/e820/api.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _ASM_E820_API_H
0003 #define _ASM_E820_API_H
0004
0005 #include <asm/e820/types.h>
0006
0007 extern struct e820_table *e820_table;
0008 extern struct e820_table *e820_table_kexec;
0009 extern struct e820_table *e820_table_firmware;
0010
0011 extern unsigned long pci_mem_start;
0012
0013 extern bool e820__mapped_raw_any(u64 start, u64 end, enum e820_type type);
0014 extern bool e820__mapped_any(u64 start, u64 end, enum e820_type type);
0015 extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type);
0016
0017 extern void e820__range_add   (u64 start, u64 size, enum e820_type type);
0018 extern u64  e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
0019 extern u64  e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool check_type);
0020
0021 extern void e820__print_table(char *who);
0022 extern int  e820__update_table(struct e820_table *table);
0023 extern void e820__update_table_print(void);
0024
0025 extern unsigned long e820__end_of_ram_pfn(void);
0026 extern unsigned long e820__end_of_low_ram_pfn(void);
0027
0028 extern u64  e820__memblock_alloc_reserved(u64 size, u64 align);
0029 extern void e820__memblock_setup(void);
0030
0031 extern void e820__reserve_setup_data(void);
0032 extern void e820__finish_early_params(void);
0033 extern void e820__reserve_resources(void);
0034 extern void e820__reserve_resources_late(void);
0035
0036 extern void e820__memory_setup(void);
0037 extern void e820__memory_setup_extended(u64 phys_addr, u32 data_len);
0038 extern char *e820__memory_setup_default(void);
0039 extern void e820__setup_pci_gap(void);
0040
0041 extern void e820__reallocate_tables(void);
0042 extern void e820__register_nosave_regions(unsigned long limit_pfn);
0043
0044 extern int  e820__get_entry_type(u64 start, u64 end);
0045
0046 /*
0047  * Returns true iff the specified range [start,end) is completely contained inside
0048  * the ISA region.
0049  */
0050 static inline bool is_ISA_range(u64 start, u64 end)
0051 {
0052     return start >= ISA_START_ADDRESS && end <= ISA_END_ADDRESS;
0053 }
0054
0055 #endif /* _ASM_E820_API_H */