1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * SIGP related definitions.
4 *
5 * Copied from the Linux kernel file arch/s390/include/asm/sigp.h
6 */
7
8 #ifndef _ASMS390X_SIGP_H_
9 #define _ASMS390X_SIGP_H_
10
11 /* SIGP order codes */
12 #define SIGP_SENSE 1
13 #define SIGP_EXTERNAL_CALL 2
14 #define SIGP_EMERGENCY_SIGNAL 3
15 #define SIGP_START 4
16 #define SIGP_STOP 5
17 #define SIGP_RESTART 6
18 #define SIGP_STOP_AND_STORE_STATUS 9
19 #define SIGP_INITIAL_CPU_RESET 11
20 #define SIGP_CPU_RESET 12
21 #define SIGP_SET_PREFIX 13
22 #define SIGP_STORE_STATUS_AT_ADDRESS 14
23 #define SIGP_SET_ARCHITECTURE 18
24 #define SIGP_COND_EMERGENCY_SIGNAL 19
25 #define SIGP_SENSE_RUNNING 21
26 #define SIGP_SET_MULTI_THREADING 22
27 #define SIGP_STORE_ADDITIONAL_STATUS 23
28
29 /* SIGP condition codes */
30 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
31 #define SIGP_CC_STATUS_STORED 1
32 #define SIGP_CC_BUSY 2
33 #define SIGP_CC_NOT_OPERATIONAL 3
34
35 /* SIGP cpu status bits */
36
37 #define SIGP_STATUS_INVALID_ORDER 0x00000002UL
38 #define SIGP_STATUS_CHECK_STOP 0x00000010UL
39 #define SIGP_STATUS_STOPPED 0x00000040UL
40 #define SIGP_STATUS_EXT_CALL_PENDING 0x00000080UL
41 #define SIGP_STATUS_INVALID_PARAMETER 0x00000100UL
42 #define SIGP_STATUS_INCORRECT_STATE 0x00000200UL
43 #define SIGP_STATUS_NOT_RUNNING 0x00000400UL
44
45 #ifndef __ASSEMBLER__
46
47
sigp(uint16_t addr,uint8_t order,unsigned long parm,uint32_t * status)48 static inline int sigp(uint16_t addr, uint8_t order, unsigned long parm,
49 uint32_t *status)
50 {
51 register unsigned long reg1 asm ("1") = parm;
52 uint64_t bogus_cc = SIGP_CC_NOT_OPERATIONAL;
53 int cc;
54
55 asm volatile(
56 " tmll %[bogus_cc],3\n"
57 " sigp %[reg1],%[addr],0(%[order])\n"
58 " ipm %[cc]\n"
59 " srl %[cc],28\n"
60 : [cc] "=d" (cc), [reg1] "+d" (reg1)
61 : [addr] "d" (addr), [order] "a" (order), [bogus_cc] "d" (bogus_cc)
62 : "cc");
63 if (status)
64 *status = reg1;
65 return cc;
66 }
67
sigp_retry(uint16_t addr,uint8_t order,unsigned long parm,uint32_t * status)68 static inline int sigp_retry(uint16_t addr, uint8_t order, unsigned long parm,
69 uint32_t *status)
70 {
71 int cc;
72
73 do {
74 cc = sigp(addr, order, parm, status);
75 } while (cc == 2);
76 return cc;
77 }
78
79 #endif /* __ASSEMBLER__ */
80 #endif /* _ASMS390X_SIGP_H_ */
81