/* * include/asm-s390/sigp.h * * S390 version * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com), * Martin Schwidefsky (schwidefsky@de.ibm.com) * Heiko Carstens (heiko.carstens@de.ibm.com) * * sigp.h by D.J. Barrow (c) IBM 1999 * contains routines / structures for signalling other S/390 processors in an * SMP configuration. */ #ifndef __SIGP__ #define __SIGP__ #include <asm/ptrace.h> #include <asm/atomic.h> /* get real cpu address from logical cpu number */ extern volatile int __cpu_logical_map[]; typedef enum { sigp_unassigned=0x0, sigp_sense, sigp_external_call, sigp_emergency_signal, sigp_start, sigp_stop, sigp_restart, sigp_unassigned1, sigp_unassigned2, sigp_stop_and_store_status, sigp_unassigned3, sigp_initial_cpu_reset, sigp_cpu_reset, sigp_set_prefix, sigp_store_status_at_address, sigp_store_extended_status_at_address } sigp_order_code; typedef __u32 sigp_status_word; typedef enum { sigp_order_code_accepted=0, sigp_status_stored, sigp_busy, sigp_not_operational } sigp_ccode; /* * Definitions for the external call */ /* 'Bit' signals, asynchronous */ typedef enum { ec_schedule=0, ec_call_function, ec_bit_last } ec_bit_sig; /* * Signal processor */ static inline sigp_ccode signal_processor(__u16 cpu_addr, sigp_order_code order_code) { sigp_ccode ccode; __asm__ __volatile__( " sr 1,1\n" /* parameter=0 in gpr 1 */ " sigp 1,%1,0(%2)\n" " ipm %0\n" " srl %0,28\n" : "=d" (ccode) : "d" (__cpu_logical_map[cpu_addr]), "a" (order_code) : "cc" , "memory", "1" ); return ccode; } /* * Signal processor with parameter */ static inline sigp_ccode signal_processor_p(__u32 parameter, __u16 cpu_addr, sigp_order_code order_code) { sigp_ccode ccode; __asm__ __volatile__( " lr 1,%1\n" /* parameter in gpr 1 */ " sigp 1,%2,0(%3)\n" " ipm %0\n" " srl %0,28\n" : "=d" (ccode) : "d" (parameter), "d" (__cpu_logical_map[cpu_addr]), "a" (order_code) : "cc" , "memory", "1" ); return ccode; } /* * Signal processor with parameter and return status */ static inline sigp_ccode signal_processor_ps(__u32 *statusptr, __u32 parameter, __u16 cpu_addr, sigp_order_code order_code) { sigp_ccode ccode; __asm__ __volatile__( " sr 2,2\n" /* clear status */ " lr 3,%2\n" /* parameter in gpr 3 */ " sigp 2,%3,0(%4)\n" " st 2,%1\n" " ipm %0\n" " srl %0,28\n" : "=d" (ccode), "=m" (*statusptr) : "d" (parameter), "d" (__cpu_logical_map[cpu_addr]), "a" (order_code) : "cc" , "memory", "2" , "3" ); return ccode; } #endif /* __SIGP__ */