include/asm-i386/mach-xen/mach_traps.h

   1 /*
   2  *  include/asm-xen/asm-i386/mach-xen/mach_traps.h
   3  *
   4  *  Machine specific NMI handling for Xen
   5  */
   6 #ifndef _MACH_TRAPS_H
   7 #define _MACH_TRAPS_H
   8
   9 #include <linux/bitops.h>
  10 #include <xen/interface/nmi.h>
  11
  12 static inline void clear_mem_error(unsigned char reason) {}
  13 static inline void clear_io_check_error(unsigned char reason) {}
  14
  15 static inline unsigned char get_nmi_reason(void)
  16 {
  17         shared_info_t *s = HYPERVISOR_shared_info;
  18         unsigned char reason = 0;
  19
  20         /* construct a value which looks like it came from
  21          * port 0x61.
  22          */
  23         if (test_bit(_XEN_NMIREASON_io_error, &s->arch.nmi_reason))
  24                 reason |= 0x40;
  25         if (test_bit(_XEN_NMIREASON_parity_error, &s->arch.nmi_reason))
  26                 reason |= 0x80;
  27
  28         return reason;
  29 }
  30
  31 static inline void reassert_nmi(void) {}
  32
  33 #endif /* !_MACH_TRAPS_H */