xref: /openbmc/linux/arch/s390/include/asm/sigp.h (revision 25130c1a)
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 
____pcpu_sigp(u16 addr,u8 order,unsigned long parm,u32 * status)41 static 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 
__pcpu_sigp(u16 addr,u8 order,unsigned long parm,u32 * status)58 static 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 */
73