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 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
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
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