LXR linux/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
   5enum 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
  12static 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
  20extern unsigned long uv_systab_phys;
  21
  22extern enum uv_system_type get_uv_system_type(void);
  23static inline bool is_early_uv_system(void)
  24{
  25        return uv_systab_phys && uv_systab_phys != EFI_INVALID_TABLE_ADDR;
  26}
  27extern int is_uv_system(void);
  28extern int is_uv_hubbed(int uvtype);
  29extern void uv_cpu_init(void);
  30extern void uv_nmi_init(void);
  31extern void uv_system_init(void);
  32
  33#else   /* !X86_UV */
  34
  35static inline enum uv_system_type get_uv_system_type(void) { return UV_NONE; }
  36static inline bool is_early_uv_system(void)     { return 0; }
  37static inline int is_uv_system(void)    { return 0; }
  38static inline int is_uv_hubbed(int uv)  { return 0; }
  39static inline void uv_cpu_init(void)    { }
  40static inline void uv_system_init(void) { }
  41
  42#endif  /* X86_UV */
  43
  44#endif  /* _ASM_X86_UV_UV_H */
  45