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	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
56static 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 */
71