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zipl: move SIGP related functions and definitions into separate header

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Move SIGP related functions and definitions to
`include/boot/sigp.h`. This allows the reuse of the definitions in
assembler files.

Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Marc Hartmayer
2019-11-18 12:42:49 +01:00
committed by Jan Höppner
parent 9d39a4bd47
commit 675c854fa3
2 changed files with 56 additions and 37 deletions
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55
include/boot/sigp.h Normal file
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@@ -0,0 +1,55 @@
/*
* SIGP related definitions and functions.
*
* Copyright IBM Corp. 2020
*
* s390-tools is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#ifndef S390_SIGP_H
#define S390_SIGP_H
/* Signal Processor Order Codes */
#define SIGP_STOP_AND_STORE_STATUS 9
#define SIGP_SET_MULTI_THREADING 22
#define SIGP_STORE_ASTATUS_AT_ADDRESS 23
/* Signal Processor Condition Codes */
#define SIGP_CC_ORDER_CODE_ACCEPTED 0
#define SIGP_CC_BUSY 2
#ifndef __ASSEMBLER__
#include <stdint.h>
static inline int sigp(uint16_t addr, uint8_t order, uint32_t parm,
uint32_t *status)
{
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" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc");
if (status && cc == 1)
*status = reg1;
return cc;
}
static inline int sigp_busy(uint16_t addr, uint8_t order, uint32_t parm,
uint32_t *status)
{
int cc;
do {
cc = sigp(addr, order, parm, status);
} while (cc == SIGP_CC_BUSY);
return cc;
}
#endif /* __ASSEMBLER__ */
#endif /* S390_SIGP_H */

38
zipl/boot/s390.h
View File

@@ -13,6 +13,7 @@
#include "lib/zt_common.h"
#include "libc.h"
#include "boot/sigp.h"
#define __pa32(x) ((uint32_t)(unsigned long)(x))
#define __pa(x) ((unsigned long)(x))
@@ -294,43 +295,6 @@ static inline int diag308(unsigned long subcode, void *addr)
return _rc;
}
/*
* Signal Processor
*/
#define SIGP_STOP_AND_STORE_STATUS 9
#define SIGP_SET_MULTI_THREADING 22
#define SIGP_STORE_ASTATUS_AT_ADDRESS 23
#define SIGP_CC_ORDER_CODE_ACCEPTED 0
#define SIGP_CC_BUSY 2
static inline int sigp(uint16_t addr, uint8_t order, uint32_t parm,
uint32_t *status)
{
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" (cc), "+d" (reg1) : "d" (addr), "a" (order) : "cc");
if (status && cc == 1)
*status = reg1;
return cc;
}
static inline int sigp_busy(uint16_t addr, uint8_t order, uint32_t parm,
uint32_t *status)
{
int cc;
do {
cc = sigp(addr, order, parm, status);
} while (cc == SIGP_CC_BUSY);
return cc;
}
/*
* Store CPU address
*/