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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Machine check handler definitions
*
* Copyright IBM Corp. 2000, 2009
* Author(s): Ingo Adlung <adlung@de.ibm.com>,
* Martin Schwidefsky <schwidefsky@de.ibm.com>,
* Cornelia Huck <cornelia.huck@de.ibm.com>,
* Heiko Carstens <heiko.carstens@de.ibm.com>,
*/
#ifndef _ASM_S390_NMI_H
#define _ASM_S390_NMI_H
#include <linux/bits.h>
#include <linux/types.h>
#define MCIC_SUBCLASS_MASK (1ULL<<63 | 1ULL<<62 | 1ULL<<61 | \
1ULL<<59 | 1ULL<<58 | 1ULL<<56 | \
1ULL<<55 | 1ULL<<54 | 1ULL<<53 | \
1ULL<<52 | 1ULL<<47 | 1ULL<<46 | \
1ULL<<45 | 1ULL<<44)
#define MCCK_CODE_SYSTEM_DAMAGE BIT(63)
#define MCCK_CODE_EXT_DAMAGE BIT(63 - 5)
#define MCCK_CODE_CP BIT(63 - 9)
#define MCCK_CODE_CPU_TIMER_VALID BIT(63 - 46)
#define MCCK_CODE_PSW_MWP_VALID BIT(63 - 20)
#define MCCK_CODE_PSW_IA_VALID BIT(63 - 23)
#define MCCK_CODE_CR_VALID BIT(63 - 29)
#define MCCK_CODE_GS_VALID BIT(63 - 36)
#define MCCK_CODE_FC_VALID BIT(63 - 43)
#ifndef __ASSEMBLY__
union mci {
unsigned long val;
struct {
u64 sd : 1; /* 00 system damage */
u64 pd : 1; /* 01 instruction-processing damage */
u64 sr : 1; /* 02 system recovery */
u64 : 1; /* 03 */
u64 cd : 1; /* 04 timing-facility damage */
u64 ed : 1; /* 05 external damage */
u64 : 1; /* 06 */
u64 dg : 1; /* 07 degradation */
u64 w : 1; /* 08 warning pending */
u64 cp : 1; /* 09 channel-report pending */
u64 sp : 1; /* 10 service-processor damage */
u64 ck : 1; /* 11 channel-subsystem damage */
u64 : 2; /* 12-13 */
u64 b : 1; /* 14 backed up */
u64 : 1; /* 15 */
u64 se : 1; /* 16 storage error uncorrected */
u64 sc : 1; /* 17 storage error corrected */
u64 ke : 1; /* 18 storage-key error uncorrected */
u64 ds : 1; /* 19 storage degradation */
u64 wp : 1; /* 20 psw mwp validity */
u64 ms : 1; /* 21 psw mask and key validity */
u64 pm : 1; /* 22 psw program mask and cc validity */
u64 ia : 1; /* 23 psw instruction address validity */
u64 fa : 1; /* 24 failing storage address validity */
u64 vr : 1; /* 25 vector register validity */
u64 ec : 1; /* 26 external damage code validity */
u64 fp : 1; /* 27 floating point register validity */
u64 gr : 1; /* 28 general register validity */
u64 cr : 1; /* 29 control register validity */
u64 : 1; /* 30 */
u64 st : 1; /* 31 storage logical validity */
u64 ie : 1; /* 32 indirect storage error */
u64 ar : 1; /* 33 access register validity */
u64 da : 1; /* 34 delayed access exception */
u64 : 1; /* 35 */
u64 gs : 1; /* 36 guarded storage registers validity */
u64 : 5; /* 37-41 */
u64 pr : 1; /* 42 tod programmable register validity */
u64 fc : 1; /* 43 fp control register validity */
u64 ap : 1; /* 44 ancillary report */
u64 : 1; /* 45 */
u64 ct : 1; /* 46 cpu timer validity */
u64 cc : 1; /* 47 clock comparator validity */
u64 : 16; /* 47-63 */
};
};
#define MCESA_ORIGIN_MASK (~0x3ffUL)
#define MCESA_LC_MASK (0xfUL)
#define MCESA_MIN_SIZE (1024)
#define MCESA_MAX_SIZE (2048)
struct mcesa {
u8 vector_save_area[1024];
u8 guarded_storage_save_area[32];
};
struct pt_regs;
void nmi_alloc_boot_cpu(struct lowcore *lc);
int nmi_alloc_per_cpu(struct lowcore *lc);
void nmi_free_per_cpu(struct lowcore *lc);
void s390_handle_mcck(void);
int s390_do_machine_check(struct pt_regs *regs);
#endif /* __ASSEMBLY__ */
#endif /* _ASM_S390_NMI_H */
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