arch/x86/include/asm/uv/uv.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_UV_UV_H
   3 #define _ASM_X86_UV_UV_H
   4
   5 enum uv_system_type {UV_NONE, UV_LEGACY_APIC, UV_X2APIC};
   6
   7 #ifdef CONFIG_X86_UV
   8 #include <linux/efi.h>
   9
  10 #define UV_PROC_NODE    "sgi_uv"
  11
  12 static inline int uv(int uvtype)
  13 {
  14         /* uv(0) is "any" */
  15         if (uvtype >= 0 && uvtype <= 30)
  16                 return 1 << uvtype;
  17         return 1;
  18 }
  19
  20 extern unsigned long uv_systab_phys;
  21
  22 extern enum uv_system_type get_uv_system_type(void);
  23 static inline bool is_early_uv_system(void)
  24 {
  25         return uv_systab_phys && uv_systab_phys != EFI_INVALID_TABLE_ADDR;
  26 }
  27 extern int is_uv_system(void);
  28 extern int is_uv_hubbed(int uvtype);
  29 extern void uv_cpu_init(void);
  30 extern void uv_nmi_init(void);
  31 extern void uv_system_init(void);
  32
  33 #else   /* !X86_UV */
  34
  35 static inline enum uv_system_type get_uv_system_type(void) { return UV_NONE; }
  36 static inline bool is_early_uv_system(void)     { return 0; }
  37 static inline int is_uv_system(void)    { return 0; }
  38 static inline int is_uv_hubbed(int uv)  { return 0; }
  39 static inline void uv_cpu_init(void)    { }
  40 static inline void uv_system_init(void) { }
  41
  42 #endif  /* X86_UV */
  43
  44 #endif  /* _ASM_X86_UV_UV_H */