fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-s390 / sigp.h
blobe16d56f8dfe1dd01864c3993c60a2f0a43757799
1 /*
2 * include/asm-s390/sigp.h
4 * S390 version
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
7 * Martin Schwidefsky (schwidefsky@de.ibm.com)
8 * Heiko Carstens (heiko.carstens@de.ibm.com)
10 * sigp.h by D.J. Barrow (c) IBM 1999
11 * contains routines / structures for signalling other S/390 processors in an
12 * SMP configuration.
15 #ifndef __SIGP__
16 #define __SIGP__
18 #include <asm/ptrace.h>
19 #include <asm/atomic.h>
21 /* get real cpu address from logical cpu number */
22 extern volatile int __cpu_logical_map[];
24 typedef enum
26 sigp_unassigned=0x0,
27 sigp_sense,
28 sigp_external_call,
29 sigp_emergency_signal,
30 sigp_start,
31 sigp_stop,
32 sigp_restart,
33 sigp_unassigned1,
34 sigp_unassigned2,
35 sigp_stop_and_store_status,
36 sigp_unassigned3,
37 sigp_initial_cpu_reset,
38 sigp_cpu_reset,
39 sigp_set_prefix,
40 sigp_store_status_at_address,
41 sigp_store_extended_status_at_address
42 } sigp_order_code;
44 typedef __u32 sigp_status_word;
46 typedef enum
48 sigp_order_code_accepted=0,
49 sigp_status_stored,
50 sigp_busy,
51 sigp_not_operational
52 } sigp_ccode;
56 * Definitions for the external call
59 /* 'Bit' signals, asynchronous */
60 typedef enum
62 ec_schedule=0,
63 ec_call_function,
64 ec_bit_last
65 } ec_bit_sig;
68 * Signal processor
70 static inline sigp_ccode
71 signal_processor(__u16 cpu_addr, sigp_order_code order_code)
73 register unsigned long reg1 asm ("1") = 0;
74 sigp_ccode ccode;
76 asm volatile(
77 " sigp %1,%2,0(%3)\n"
78 " ipm %0\n"
79 " srl %0,28\n"
80 : "=d" (ccode)
81 : "d" (reg1), "d" (__cpu_logical_map[cpu_addr]),
82 "a" (order_code) : "cc" , "memory");
83 return ccode;
87 * Signal processor with parameter
89 static inline sigp_ccode
90 signal_processor_p(__u32 parameter, __u16 cpu_addr, sigp_order_code order_code)
92 register unsigned int reg1 asm ("1") = parameter;
93 sigp_ccode ccode;
95 asm volatile(
96 " sigp %1,%2,0(%3)\n"
97 " ipm %0\n"
98 " srl %0,28\n"
99 : "=d" (ccode)
100 : "d" (reg1), "d" (__cpu_logical_map[cpu_addr]),
101 "a" (order_code) : "cc" , "memory");
102 return ccode;
106 * Signal processor with parameter and return status
108 static inline sigp_ccode
109 signal_processor_ps(__u32 *statusptr, __u32 parameter, __u16 cpu_addr,
110 sigp_order_code order_code)
112 register unsigned int reg1 asm ("1") = parameter;
113 sigp_ccode ccode;
115 asm volatile(
116 " sigp %1,%2,0(%3)\n"
117 " ipm %0\n"
118 " srl %0,28\n"
119 : "=d" (ccode), "+d" (reg1)
120 : "d" (__cpu_logical_map[cpu_addr]), "a" (order_code)
121 : "cc" , "memory");
122 *statusptr = reg1;
123 return ccode;
126 #endif /* __SIGP__ */