1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 /*
3 * Machine check handler definitions
4 *
5 * Copyright IBM Corp. 2000, 2009
6 * Author(s): Ingo Adlung <adlung@de.ibm.co
7 * Martin Schwidefsky <schwidefs
8 * Cornelia Huck <cornelia.huck@
9 */
10
11 #ifndef _ASM_S390_NMI_H
12 #define _ASM_S390_NMI_H
13
14 #include <linux/bits.h>
15 #include <linux/types.h>
16
17 #define MCIC_SUBCLASS_MASK (1ULL<<63 | 1U
18 1ULL<<59 | 1UL
19 1ULL<<55 | 1UL
20 1ULL<<52 | 1UL
21 1ULL<<45 | 1UL
22 #define MCCK_CODE_SYSTEM_DAMAGE BIT(63
23 #define MCCK_CODE_EXT_DAMAGE BIT(63
24 #define MCCK_CODE_CP BIT(63
25 #define MCCK_CODE_STG_ERROR BIT(63
26 #define MCCK_CODE_STG_KEY_ERROR BIT(63
27 #define MCCK_CODE_STG_DEGRAD BIT(63
28 #define MCCK_CODE_PSW_MWP_VALID BIT(63
29 #define MCCK_CODE_PSW_IA_VALID BIT(63
30 #define MCCK_CODE_STG_FAIL_ADDR BIT(63
31 #define MCCK_CODE_CR_VALID BIT(63
32 #define MCCK_CODE_GS_VALID BIT(63
33 #define MCCK_CODE_FC_VALID BIT(63
34 #define MCCK_CODE_CPU_TIMER_VALID BIT(63
35
36 #ifndef __ASSEMBLY__
37
38 union mci {
39 unsigned long val;
40 struct {
41 u64 sd : 1; /* 00 system dama
42 u64 pd : 1; /* 01 instruction
43 u64 sr : 1; /* 02 system reco
44 u64 : 1; /* 03 */
45 u64 cd : 1; /* 04 timing-faci
46 u64 ed : 1; /* 05 external da
47 u64 : 1; /* 06 */
48 u64 dg : 1; /* 07 degradation
49 u64 w : 1; /* 08 warning pen
50 u64 cp : 1; /* 09 channel-rep
51 u64 sp : 1; /* 10 service-pro
52 u64 ck : 1; /* 11 channel-sub
53 u64 : 2; /* 12-13 */
54 u64 b : 1; /* 14 backed up *
55 u64 : 1; /* 15 */
56 u64 se : 1; /* 16 storage err
57 u64 sc : 1; /* 17 storage err
58 u64 ke : 1; /* 18 storage-key
59 u64 ds : 1; /* 19 storage deg
60 u64 wp : 1; /* 20 psw mwp val
61 u64 ms : 1; /* 21 psw mask an
62 u64 pm : 1; /* 22 psw program
63 u64 ia : 1; /* 23 psw instruc
64 u64 fa : 1; /* 24 failing sto
65 u64 vr : 1; /* 25 vector regi
66 u64 ec : 1; /* 26 external da
67 u64 fp : 1; /* 27 floating po
68 u64 gr : 1; /* 28 general reg
69 u64 cr : 1; /* 29 control reg
70 u64 : 1; /* 30 */
71 u64 st : 1; /* 31 storage log
72 u64 ie : 1; /* 32 indirect st
73 u64 ar : 1; /* 33 access regi
74 u64 da : 1; /* 34 delayed acc
75 u64 : 1; /* 35 */
76 u64 gs : 1; /* 36 guarded sto
77 u64 : 5; /* 37-41 */
78 u64 pr : 1; /* 42 tod program
79 u64 fc : 1; /* 43 fp control
80 u64 ap : 1; /* 44 ancillary r
81 u64 : 1; /* 45 */
82 u64 ct : 1; /* 46 cpu timer v
83 u64 cc : 1; /* 47 clock compa
84 u64 : 16; /* 47-63 */
85 };
86 };
87
88 #define MCESA_ORIGIN_MASK (~0x3ffUL)
89 #define MCESA_LC_MASK (0xfUL)
90 #define MCESA_MIN_SIZE (1024)
91 #define MCESA_MAX_SIZE (2048)
92
93 struct mcesa {
94 u8 vector_save_area[1024];
95 u8 guarded_storage_save_area[32];
96 };
97
98 struct pt_regs;
99
100 void nmi_alloc_mcesa_early(u64 *mcesad);
101 int nmi_alloc_mcesa(u64 *mcesad);
102 void nmi_free_mcesa(u64 *mcesad);
103
104 void s390_handle_mcck(void);
105 void s390_do_machine_check(struct pt_regs *reg
106
107 #endif /* __ASSEMBLY__ */
108 #endif /* _ASM_S390_NMI_H */
109
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