Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_S390_DIAG288_H
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#define _ASM_S390_DIAG288_H
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#include <asm/asm-extable.h>
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#include <asm/types.h>
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#define MIN_INTERVAL 15 /* Minimal time supported by diag288 */
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#define MAX_INTERVAL 3600 /* One hour should be enough - pure estimation */
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#define WDT_DEFAULT_TIMEOUT 30
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/* Function codes - init, change, cancel */
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#define WDT_FUNC_INIT 0
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#define WDT_FUNC_CHANGE 1
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#define WDT_FUNC_CANCEL 2
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#define WDT_FUNC_CONCEAL 0x80000000
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/* Action codes for LPAR watchdog */
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#define LPARWDT_RESTART 0
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static inline int __diag288(unsigned int func, unsigned int timeout,
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unsigned long action, unsigned int len)
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{
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union register_pair r1 = { .even = func, .odd = timeout, };
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union register_pair r3 = { .even = action, .odd = len, };
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int rc = -EINVAL;
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asm volatile(
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" diag %[r1],%[r3],0x288\n"
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"0: lhi %[rc],0\n"
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"1:"
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EX_TABLE(0b, 1b)
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: [rc] "+d" (rc)
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: [r1] "d" (r1.pair), [r3] "d" (r3.pair)
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: "cc", "memory");
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return rc;
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}
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#endif /* _ASM_S390_DIAG288_H */
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