arch/x86/include/asm/e820.h

   1 #ifndef _ASM_X86_E820_H
   2 #define _ASM_X86_E820_H
   3
   4 /*
   5  * E820_X_MAX is the maximum size of the extended E820 table.  The extended
   6  * table may contain up to 3 extra E820 entries per possible NUMA node, so we
   7  * make room for 3 * MAX_NUMNODES possible entries, beyond the standard 128.
   8  * Also note that E820_X_MAX *must* be defined before we include uapi/asm/e820.h.
   9  */
  10 #include <linux/numa.h>
  11 #define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
  12
  13 #include <uapi/asm/e820.h>
  14
  15 #ifndef __ASSEMBLY__
  16 /* see comment in arch/x86/kernel/e820.c */
  17 extern struct e820map *e820;
  18 extern struct e820map *e820_saved;
  19
  20 extern unsigned long pci_mem_start;
  21 extern int e820_any_mapped(u64 start, u64 end, unsigned type);
  22 extern int e820_all_mapped(u64 start, u64 end, unsigned type);
  23 extern void e820_add_region(u64 start, u64 size, int type);
  24 extern void e820_print_map(char *who);
  25 extern int
  26 sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map);
  27 extern u64 e820_update_range(u64 start, u64 size, unsigned old_type,
  28                                unsigned new_type);
  29 extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type,
  30                              int checktype);
  31 extern void update_e820(void);
  32 extern void e820_setup_gap(void);
  33 struct setup_data;
  34 extern void parse_e820_ext(u64 phys_addr, u32 data_len);
  35
  36 #if defined(CONFIG_X86_64) || \
  37         (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION))
  38 extern void e820_mark_nosave_regions(unsigned long limit_pfn);
  39 #else
  40 static inline void e820_mark_nosave_regions(unsigned long limit_pfn)
  41 {
  42 }
  43 #endif
  44
  45 extern unsigned long e820_end_of_ram_pfn(void);
  46 extern unsigned long e820_end_of_low_ram_pfn(void);
  47 extern u64 early_reserve_e820(u64 sizet, u64 align);
  48
  49 void memblock_x86_fill(void);
  50 void memblock_find_dma_reserve(void);
  51
  52 extern void finish_e820_parsing(void);
  53 extern void e820_reserve_resources(void);
  54 extern void e820_reserve_resources_late(void);
  55 extern void setup_memory_map(void);
  56 extern char *default_machine_specific_memory_setup(void);
  57
  58 extern void e820_reallocate_tables(void);
  59
  60 /*
  61  * Returns true iff the specified range [s,e) is completely contained inside
  62  * the ISA region.
  63  */
  64 static inline bool is_ISA_range(u64 s, u64 e)
  65 {
  66         return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS;
  67 }
  68
  69 #endif /* __ASSEMBLY__ */
  70 #include <linux/ioport.h>
  71
  72 #define HIGH_MEMORY     (1024*1024)
  73 #endif /* _ASM_X86_E820_H */