sigp.h

 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 __ASSEMBLER__
40
41#include <asm/asm.h>
42
43static inline int ____pcpu_sigp(u16 addr, u8 order, unsigned long parm,
44				u32 *status)
45{
46	union register_pair r1 = { .odd = parm, };
47	int cc;
48
49	asm volatile(
50		"	sigp	%[r1],%[addr],0(%[order])\n"
51		CC_IPM(cc)
52		: CC_OUT(cc, cc), [r1] "+d" (r1.pair)
53		: [addr] "d" (addr), [order] "a" (order)
54		: CC_CLOBBER);
55	*status = r1.even;
56	return CC_TRANSFORM(cc);
57}
58
59static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm,
60			      u32 *status)
61{
62	u32 _status;
63	int cc;
64
65	cc = ____pcpu_sigp(addr, order, parm, &_status);
66	if (status && cc == SIGP_CC_STATUS_STORED)
67		*status = _status;
68	return cc;
69}
70
71#endif /* __ASSEMBLER__ */
72
73#endif /* __S390_ASM_SIGP_H */