arch/s390/include/asm/sigp.h

   1 #ifndef __S390_ASM_SIGP_H
   2 #define __S390_ASM_SIGP_H
   3
   4 /* SIGP order codes */
   5 #define SIGP_SENSE                    1
   6 #define SIGP_EXTERNAL_CALL            2
   7 #define SIGP_EMERGENCY_SIGNAL         3
   8 #define SIGP_START                    4
   9 #define SIGP_STOP                     5
  10 #define SIGP_RESTART                  6
  11 #define SIGP_STOP_AND_STORE_STATUS    9
  12 #define SIGP_INITIAL_CPU_RESET       11
  13 #define SIGP_SET_PREFIX              13
  14 #define SIGP_STORE_STATUS_AT_ADDRESS 14
  15 #define SIGP_SET_ARCHITECTURE        18
  16 #define SIGP_COND_EMERGENCY_SIGNAL   19
  17 #define SIGP_SENSE_RUNNING           21
  18 #define SIGP_STORE_ADDITIONAL_STATUS 23
  19
  20 /* SIGP condition codes */
  21 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
  22 #define SIGP_CC_STATUS_STORED       1
  23 #define SIGP_CC_BUSY                2
  24 #define SIGP_CC_NOT_OPERATIONAL     3
  25
  26 /* SIGP cpu status bits */
  27
  28 #define SIGP_STATUS_CHECK_STOP          0x00000010UL
  29 #define SIGP_STATUS_STOPPED             0x00000040UL
  30 #define SIGP_STATUS_EXT_CALL_PENDING    0x00000080UL
  31 #define SIGP_STATUS_INVALID_PARAMETER   0x00000100UL
  32 #define SIGP_STATUS_INCORRECT_STATE     0x00000200UL
  33 #define SIGP_STATUS_NOT_RUNNING         0x00000400UL
  34
  35 #ifndef __ASSEMBLY__
  36
  37 static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm,
  38                               u32 *status)
  39 {
  40         register unsigned long reg1 asm ("1") = parm;
  41         int cc;
  42
  43         asm volatile(
  44                 "       sigp    %1,%2,0(%3)\n"
  45                 "       ipm     %0\n"
  46                 "       srl     %0,28\n"
  47                 : "=d" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc");
  48         if (status && cc == 1)
  49                 *status = reg1;
  50         return cc;
  51 }
  52
  53 #endif /* __ASSEMBLY__ */
  54
  55 #endif /* __S390_ASM_SIGP_H */