LXR linux/arch/s390/include/asm/nmi.h

   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
  35union 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
  90struct mcesa {
  91        u8 vector_save_area[1024];
  92        u8 guarded_storage_save_area[32];
  93};
  94
  95struct pt_regs;
  96
  97void nmi_alloc_boot_cpu(struct lowcore *lc);
  98int nmi_alloc_per_cpu(struct lowcore *lc);
  99void nmi_free_per_cpu(struct lowcore *lc);
 100
 101void s390_handle_mcck(void);
 102void s390_do_machine_check(struct pt_regs *regs);
 103
 104#endif /* __ASSEMBLY__ */
 105#endif /* _ASM_S390_NMI_H */
 106