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