1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Machine check handler definitions 4 * 5 * Copyright IBM Corp. 2000, 2009 6 * Author(s): Ingo Adlung <adlung@de.ibm.com>, 7 * Martin Schwidefsky <schwidefsky@de.ibm.com>, 8 * Cornelia Huck <cornelia.huck@de.ibm.com>, 9 * Heiko Carstens <heiko.carstens@de.ibm.com>, 10 */ 11 12 #ifndef _ASM_S390_NMI_H 13 #define _ASM_S390_NMI_H 14 15 #include <linux/bits.h> 16 #include <linux/types.h> 17 18 #define MCIC_SUBCLASS_MASK (1ULL<<63 | 1ULL<<62 | 1ULL<<61 | \ 19 1ULL<<59 | 1ULL<<58 | 1ULL<<56 | \ 20 1ULL<<55 | 1ULL<<54 | 1ULL<<53 | \ 21 1ULL<<52 | 1ULL<<47 | 1ULL<<46 | \ 22 1ULL<<45 | 1ULL<<44) 23 #define MCCK_CODE_SYSTEM_DAMAGE BIT(63) 24 #define MCCK_CODE_EXT_DAMAGE BIT(63 - 5) 25 #define MCCK_CODE_CP BIT(63 - 9) 26 #define MCCK_CODE_CPU_TIMER_VALID BIT(63 - 46) 27 #define MCCK_CODE_PSW_MWP_VALID BIT(63 - 20) 28 #define MCCK_CODE_PSW_IA_VALID BIT(63 - 23) 29 #define MCCK_CODE_CR_VALID BIT(63 - 29) 30 #define MCCK_CODE_GS_VALID BIT(63 - 36) 31 #define MCCK_CODE_FC_VALID BIT(63 - 43) 32 33 #ifndef __ASSEMBLY__ 34 35 union mci { 36 unsigned long val; 37 struct { 38 u64 sd : 1; /* 00 system damage */ 39 u64 pd : 1; /* 01 instruction-processing damage */ 40 u64 sr : 1; /* 02 system recovery */ 41 u64 : 1; /* 03 */ 42 u64 cd : 1; /* 04 timing-facility damage */ 43 u64 ed : 1; /* 05 external damage */ 44 u64 : 1; /* 06 */ 45 u64 dg : 1; /* 07 degradation */ 46 u64 w : 1; /* 08 warning pending */ 47 u64 cp : 1; /* 09 channel-report pending */ 48 u64 sp : 1; /* 10 service-processor damage */ 49 u64 ck : 1; /* 11 channel-subsystem damage */ 50 u64 : 2; /* 12-13 */ 51 u64 b : 1; /* 14 backed up */ 52 u64 : 1; /* 15 */ 53 u64 se : 1; /* 16 storage error uncorrected */ 54 u64 sc : 1; /* 17 storage error corrected */ 55 u64 ke : 1; /* 18 storage-key error uncorrected */ 56 u64 ds : 1; /* 19 storage degradation */ 57 u64 wp : 1; /* 20 psw mwp validity */ 58 u64 ms : 1; /* 21 psw mask and key validity */ 59 u64 pm : 1; /* 22 psw program mask and cc validity */ 60 u64 ia : 1; /* 23 psw instruction address validity */ 61 u64 fa : 1; /* 24 failing storage address validity */ 62 u64 vr : 1; /* 25 vector register validity */ 63 u64 ec : 1; /* 26 external damage code validity */ 64 u64 fp : 1; /* 27 floating point register validity */ 65 u64 gr : 1; /* 28 general register validity */ 66 u64 cr : 1; /* 29 control register validity */ 67 u64 : 1; /* 30 */ 68 u64 st : 1; /* 31 storage logical validity */ 69 u64 ie : 1; /* 32 indirect storage error */ 70 u64 ar : 1; /* 33 access register validity */ 71 u64 da : 1; /* 34 delayed access exception */ 72 u64 : 1; /* 35 */ 73 u64 gs : 1; /* 36 guarded storage registers validity */ 74 u64 : 5; /* 37-41 */ 75 u64 pr : 1; /* 42 tod programmable register validity */ 76 u64 fc : 1; /* 43 fp control register validity */ 77 u64 ap : 1; /* 44 ancillary report */ 78 u64 : 1; /* 45 */ 79 u64 ct : 1; /* 46 cpu timer validity */ 80 u64 cc : 1; /* 47 clock comparator validity */ 81 u64 : 16; /* 47-63 */ 82 }; 83 }; 84 85 #define MCESA_ORIGIN_MASK (~0x3ffUL) 86 #define MCESA_LC_MASK (0xfUL) 87 #define MCESA_MIN_SIZE (1024) 88 #define MCESA_MAX_SIZE (2048) 89 90 struct mcesa { 91 u8 vector_save_area[1024]; 92 u8 guarded_storage_save_area[32]; 93 }; 94 95 struct pt_regs; 96 97 void nmi_alloc_boot_cpu(struct lowcore *lc); 98 int nmi_alloc_per_cpu(struct lowcore *lc); 99 void nmi_free_per_cpu(struct lowcore *lc); 100 101 void s390_handle_mcck(void); 102 int s390_do_machine_check(struct pt_regs *regs); 103 104 #endif /* __ASSEMBLY__ */ 105 #endif /* _ASM_S390_NMI_H */ 106