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https://github.com/ibm-s390-linux/s390-tools.git
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0e385a81ca
This makes the code easier to read. Reviewed-by: Philipp Rudo <prudo@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/*
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* SIGP related definitions and functions.
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*
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* Copyright IBM Corp. 2020
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef S390_SIGP_H
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#define S390_SIGP_H
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/* Signal Processor Order Codes */
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#define SIGP_STOP_AND_STORE_STATUS 9
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#define SIGP_SET_ARCHITECTURE 18
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#define SIGP_SET_MULTI_THREADING 22
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#define SIGP_STORE_ASTATUS_AT_ADDRESS 23
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/* Signal Processor Condition Codes */
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#define SIGP_CC_ORDER_CODE_ACCEPTED 0
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#define SIGP_CC_BUSY 2
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#ifndef __ASSEMBLER__
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#include <stdint.h>
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static inline int sigp(uint16_t addr, uint8_t order, uint32_t parm,
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uint32_t *status)
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{
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register unsigned int reg1 asm ("1") = parm;
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int cc;
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asm volatile(
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" sigp %1,%2,0(%3)\n"
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" ipm %0\n"
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" srl %0,28\n"
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: "=d" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc");
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if (status && cc == 1)
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*status = reg1;
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return cc;
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}
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static inline int sigp_busy(uint16_t addr, uint8_t order, uint32_t parm,
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uint32_t *status)
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{
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int cc;
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do {
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cc = sigp(addr, order, parm, status);
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} while (cc == SIGP_CC_BUSY);
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return cc;
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}
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#endif /* __ASSEMBLER__ */
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#endif /* S390_SIGP_H */
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