diff options
Diffstat (limited to 'arch/s390/include/asm/sigp.h')
| -rw-r--r-- | arch/s390/include/asm/sigp.h | 162 |
1 files changed, 44 insertions, 118 deletions
diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h index ec403d4304f..bf9c823d402 100644 --- a/arch/s390/include/asm/sigp.h +++ b/arch/s390/include/asm/sigp.h @@ -1,127 +1,53 @@ -/* - * 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_call_function_single, - ec_bit_last -} ec_bit_sig; - -/* - * Signal processor - */ -static inline sigp_ccode -signal_processor(__u16 cpu_addr, sigp_order_code order_code) -{ - register unsigned long reg1 asm ("1") = 0; - sigp_ccode ccode; - - asm volatile( - " sigp %1,%2,0(%3)\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (ccode) - : "d" (reg1), "d" (__cpu_logical_map[cpu_addr]), - "a" (order_code) : "cc" , "memory"); - return ccode; -} - -/* - * Signal processor with parameter - */ -static inline sigp_ccode -signal_processor_p(__u32 parameter, __u16 cpu_addr, sigp_order_code order_code) +#ifndef __S390_ASM_SIGP_H +#define __S390_ASM_SIGP_H + +/* SIGP order codes */ +#define SIGP_SENSE 1 +#define SIGP_EXTERNAL_CALL 2 +#define SIGP_EMERGENCY_SIGNAL 3 +#define SIGP_START 4 +#define SIGP_STOP 5 +#define SIGP_RESTART 6 +#define SIGP_STOP_AND_STORE_STATUS 9 +#define SIGP_INITIAL_CPU_RESET 11 +#define SIGP_SET_PREFIX 13 +#define SIGP_STORE_STATUS_AT_ADDRESS 14 +#define SIGP_SET_ARCHITECTURE 18 +#define SIGP_COND_EMERGENCY_SIGNAL 19 +#define SIGP_SENSE_RUNNING 21 + +/* SIGP condition codes */ +#define SIGP_CC_ORDER_CODE_ACCEPTED 0 +#define SIGP_CC_STATUS_STORED 1 +#define SIGP_CC_BUSY 2 +#define SIGP_CC_NOT_OPERATIONAL 3 + +/* SIGP cpu status bits */ + +#define SIGP_STATUS_CHECK_STOP 0x00000010UL +#define SIGP_STATUS_STOPPED 0x00000040UL +#define SIGP_STATUS_EXT_CALL_PENDING 0x00000080UL +#define SIGP_STATUS_INVALID_PARAMETER 0x00000100UL +#define SIGP_STATUS_INCORRECT_STATE 0x00000200UL +#define SIGP_STATUS_NOT_RUNNING 0x00000400UL + +#ifndef __ASSEMBLY__ + +static inline int __pcpu_sigp(u16 addr, u8 order, u32 parm, u32 *status) { - register unsigned int reg1 asm ("1") = parameter; - sigp_ccode ccode; + register unsigned int reg1 asm ("1") = parm; + int cc; asm volatile( " sigp %1,%2,0(%3)\n" " ipm %0\n" " srl %0,28\n" - : "=d" (ccode) - : "d" (reg1), "d" (__cpu_logical_map[cpu_addr]), - "a" (order_code) : "cc" , "memory"); - return ccode; + : "=d" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc"); + if (status && cc == 1) + *status = reg1; + return cc; } -/* - * 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) -{ - register unsigned int reg1 asm ("1") = parameter; - sigp_ccode ccode; - - asm volatile( - " sigp %1,%2,0(%3)\n" - " ipm %0\n" - " srl %0,28\n" - : "=d" (ccode), "+d" (reg1) - : "d" (__cpu_logical_map[cpu_addr]), "a" (order_code) - : "cc" , "memory"); - *statusptr = reg1; - return ccode; -} +#endif /* __ASSEMBLY__ */ -#endif /* __SIGP__ */ +#endif /* __S390_ASM_SIGP_H */ |