arch/x86/include/asm/e820.h

   1 #ifndef _ASM_X86_E820_H
   2 #define _ASM_X86_E820_H
   3
   4 #ifdef CONFIG_EFI
   5 #include <linux/numa.h>
   6 #define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
   7 #else   /* ! CONFIG_EFI */
   8 #define E820_X_MAX E820MAX
   9 #endif
  10 #include <uapi/asm/e820.h>
  11 #ifndef __ASSEMBLY__
  12 /* see comment in arch/x86/kernel/e820.c */
  13 extern struct e820map e820;
  14 extern struct e820map e820_saved;
  15
  16 extern unsigned long pci_mem_start;
  17 extern int e820_any_mapped(u64 start, u64 end, unsigned type);
  18 extern int e820_all_mapped(u64 start, u64 end, unsigned type);
  19 extern void e820_add_region(u64 start, u64 size, int type);
  20 extern void e820_print_map(char *who);
  21 extern int
  22 sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map);
  23 extern u64 e820_update_range(u64 start, u64 size, unsigned old_type,
  24                                unsigned new_type);
  25 extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type,
  26                              int checktype);
  27 extern void update_e820(void);
  28 extern void e820_setup_gap(void);
  29 extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize,
  30                         unsigned long start_addr, unsigned long long end_addr);
  31 struct setup_data;
  32 extern void parse_e820_ext(u64 phys_addr, u32 data_len);
  33
  34 #if defined(CONFIG_X86_64) || \
  35         (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION))
  36 extern void e820_mark_nosave_regions(unsigned long limit_pfn);
  37 #else
  38 static inline void e820_mark_nosave_regions(unsigned long limit_pfn)
  39 {
  40 }
  41 #endif
  42
  43 #ifdef CONFIG_MEMTEST
  44 extern void early_memtest(unsigned long start, unsigned long end);
  45 #else
  46 static inline void early_memtest(unsigned long start, unsigned long end)
  47 {
  48 }
  49 #endif
  50
  51 extern unsigned long e820_end_of_ram_pfn(void);
  52 extern unsigned long e820_end_of_low_ram_pfn(void);
  53 extern u64 early_reserve_e820(u64 sizet, u64 align);
  54
  55 void memblock_x86_fill(void);
  56 void memblock_find_dma_reserve(void);
  57
  58 extern void finish_e820_parsing(void);
  59 extern void e820_reserve_resources(void);
  60 extern void e820_reserve_resources_late(void);
  61 extern void setup_memory_map(void);
  62 extern char *default_machine_specific_memory_setup(void);
  63
  64 /*
  65  * Returns true iff the specified range [s,e) is completely contained inside
  66  * the ISA region.
  67  */
  68 static inline bool is_ISA_range(u64 s, u64 e)
  69 {
  70         return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS;
  71 }
  72
  73 #endif /* __ASSEMBLY__ */
  74 #include <linux/ioport.h>
  75
  76 #define HIGH_MEMORY     (1024*1024)
  77 #endif /* _ASM_X86_E820_H */