2 * include/asm-s390/sigp.h
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)
9 * sigp.h by D.J. Barrow (c) IBM 1999
10 * contains routines / structures for signalling other S/390 processors in an
17 #include <asm/ptrace.h>
18 #include <asm/atomic.h>
20 /* get real cpu address from logical cpu number */
21 extern volatile int __cpu_logical_map[];
28 sigp_emergency_signal,
34 sigp_stop_and_store_status,
36 sigp_initial_cpu_reset,
39 sigp_store_status_at_address,
40 sigp_store_extended_status_at_address
43 typedef __u32 sigp_status_word;
47 sigp_order_code_accepted=0,
55 * Definitions for the external call
58 /* 'Bit' signals, asynchronous */
70 extern __inline__ sigp_ccode
71 signal_processor(__u16 cpu_addr, sigp_order_code order_code)
76 " sgr 1,1\n" /* parameter=0 in gpr 1 */
81 : "d" (__cpu_logical_map[cpu_addr]), "a" (order_code)
82 : "cc" , "memory", "1" );
87 * Signal processor with parameter
89 extern __inline__ sigp_ccode
90 signal_processor_p(__u64 parameter,__u16 cpu_addr,sigp_order_code order_code)
95 " lgr 1,%1\n" /* parameter in gpr 1 */
100 : "d" (parameter), "d" (__cpu_logical_map[cpu_addr]),
102 : "cc" , "memory", "1" );
107 * Signal processor with parameter and return status
109 extern __inline__ sigp_ccode
110 signal_processor_ps(unsigned long *statusptr, __u64 parameter,
111 __u16 cpu_addr, sigp_order_code order_code)
115 __asm__ __volatile__(
116 " sgr 2,2\n" /* clear status so it doesn't contain rubbish if not saved. */
117 " lgr 3,%2\n" /* parameter in gpr 3 */
122 : "=d" (ccode), "=m" (*statusptr)
123 : "d" (parameter), "d" (__cpu_logical_map[cpu_addr]),
125 : "cc" , "memory", "2" , "3"
130 #endif /* __SIGP__ */