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author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-08-01 22:42:05 +0400 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-08-01 22:42:05 +0400 |
commit | c6557e7f2b6ae76a44653d38f835174074c42e05 (patch) | |
tree | da619a76b309cb1cd259d082af768a83cfcd6d52 /arch/s390/include/asm/sigp.h | |
parent | ab4227cb2d936886069ef1056c02500d05beb15d (diff) | |
download | linux-c6557e7f2b6ae76a44653d38f835174074c42e05.tar.xz |
[S390] move include/asm-s390 to arch/s390/include/asm
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/sigp.h')
-rw-r--r-- | arch/s390/include/asm/sigp.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h new file mode 100644 index 000000000000..e16d56f8dfe1 --- /dev/null +++ b/arch/s390/include/asm/sigp.h @@ -0,0 +1,126 @@ +/* + * 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) +{ + 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) +{ + 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"); + 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) +{ + 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 /* __SIGP__ */ |