arch/s390/include/asm/sigp.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __S390_ASM_SIGP_H
   3 #define __S390_ASM_SIGP_H
   4
   5 /* SIGP order codes */
   6 #define SIGP_SENSE                    1
   7 #define SIGP_EXTERNAL_CALL            2
   8 #define SIGP_EMERGENCY_SIGNAL         3
   9 #define SIGP_START                    4
  10 #define SIGP_STOP                     5
  11 #define SIGP_RESTART                  6
  12 #define SIGP_STOP_AND_STORE_STATUS    9
  13 #define SIGP_INITIAL_CPU_RESET       11
  14 #define SIGP_CPU_RESET               12
  15 #define SIGP_SET_PREFIX              13
  16 #define SIGP_STORE_STATUS_AT_ADDRESS 14
  17 #define SIGP_SET_ARCHITECTURE        18
  18 #define SIGP_COND_EMERGENCY_SIGNAL   19
  19 #define SIGP_SENSE_RUNNING           21
  20 #define SIGP_SET_MULTI_THREADING     22
  21 #define SIGP_STORE_ADDITIONAL_STATUS 23
  22
  23 /* SIGP condition codes */
  24 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
  25 #define SIGP_CC_STATUS_STORED       1
  26 #define SIGP_CC_BUSY                2
  27 #define SIGP_CC_NOT_OPERATIONAL     3
  28
  29 /* SIGP cpu status bits */
  30
  31 #define SIGP_STATUS_INVALID_ORDER       0x00000002UL
  32 #define SIGP_STATUS_CHECK_STOP          0x00000010UL
  33 #define SIGP_STATUS_STOPPED             0x00000040UL
  34 #define SIGP_STATUS_EXT_CALL_PENDING    0x00000080UL
  35 #define SIGP_STATUS_INVALID_PARAMETER   0x00000100UL
  36 #define SIGP_STATUS_INCORRECT_STATE     0x00000200UL
  37 #define SIGP_STATUS_NOT_RUNNING         0x00000400UL
  38
  39 #ifndef __ASSEMBLY__
  40
  41 static inline int ____pcpu_sigp(u16 addr, u8 order, unsigned long parm,
  42                                 u32 *status)
  43 {
  44         register unsigned long reg1 asm ("1") = parm;
  45         int cc;
  46
  47         asm volatile(
  48                 "       sigp    %1,%2,0(%3)\n"
  49                 "       ipm     %0\n"
  50                 "       srl     %0,28\n"
  51                 : "=d" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc");
  52         *status = reg1;
  53         return cc;
  54 }
  55
  56 static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm,
  57                               u32 *status)
  58 {
  59         u32 _status;
  60         int cc;
  61
  62         cc = ____pcpu_sigp(addr, order, parm, &_status);
  63         if (status && cc == SIGP_CC_STATUS_STORED)
  64                 *status = _status;
  65         return cc;
  66 }
  67
  68 #endif /* __ASSEMBLY__ */
  69
  70 #endif /* __S390_ASM_SIGP_H */