1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_E820_API_H 3 #define _ASM_E820_API_H 4 5 #include <asm/e820/types.h> 6 7 struct device; 8 struct resource; 9 10 extern struct e820_table *e820_table; 11 extern struct e820_table *e820_table_kexec; 12 extern struct e820_table *e820_table_firmware; 13 14 extern unsigned long pci_mem_start; 15 16 extern bool e820__mapped_raw_any(u64 start, u64 end, enum e820_type type); 17 extern bool e820__mapped_any(u64 start, u64 end, enum e820_type type); 18 extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type); 19 20 extern void e820__range_add (u64 start, u64 size, enum e820_type type); 21 extern u64 e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type); 22 extern u64 e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool check_type); 23 24 extern void e820__print_table(char *who); 25 extern int e820__update_table(struct e820_table *table); 26 extern void e820__update_table_print(void); 27 28 extern unsigned long e820__end_of_ram_pfn(void); 29 extern unsigned long e820__end_of_low_ram_pfn(void); 30 31 extern u64 e820__memblock_alloc_reserved(u64 size, u64 align); 32 extern void e820__memblock_setup(void); 33 34 extern void e820__reserve_setup_data(void); 35 extern void e820__finish_early_params(void); 36 extern void e820__reserve_resources(void); 37 extern void e820__reserve_resources_late(void); 38 39 extern void e820__memory_setup(void); 40 extern void e820__memory_setup_extended(u64 phys_addr, u32 data_len); 41 extern char *e820__memory_setup_default(void); 42 extern void e820__setup_pci_gap(void); 43 44 extern void e820__reallocate_tables(void); 45 extern void e820__register_nosave_regions(unsigned long limit_pfn); 46 47 extern int e820__get_entry_type(u64 start, u64 end); 48 49 extern void remove_e820_regions(struct device *dev, struct resource *avail); 50 51 /* 52 * Returns true iff the specified range [start,end) is completely contained inside 53 * the ISA region. 54 */ 55 static inline bool is_ISA_range(u64 start, u64 end) 56 { 57 return start >= ISA_START_ADDRESS && end <= ISA_END_ADDRESS; 58 } 59 60 #endif /* _ASM_E820_API_H */ 61