sigp.h (1900B)
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 41static inline int ____pcpu_sigp(u16 addr, u8 order, unsigned long parm, 42 u32 *status) 43{ 44 union register_pair r1 = { .odd = parm, }; 45 int cc; 46 47 asm volatile( 48 " sigp %[r1],%[addr],0(%[order])\n" 49 " ipm %[cc]\n" 50 " srl %[cc],28\n" 51 : [cc] "=&d" (cc), [r1] "+&d" (r1.pair) 52 : [addr] "d" (addr), [order] "a" (order) 53 : "cc"); 54 *status = r1.even; 55 return cc; 56} 57 58static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm, 59 u32 *status) 60{ 61 u32 _status; 62 int cc; 63 64 cc = ____pcpu_sigp(addr, order, parm, &_status); 65 if (status && cc == SIGP_CC_STATUS_STORED) 66 *status = _status; 67 return cc; 68} 69 70#endif /* __ASSEMBLY__ */ 71 72#endif /* __S390_ASM_SIGP_H */