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/*
* arch/s390/kernel/s390mach.h
* S/390 data definitions for machine check processing
*
* S390 version
* Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Ingo Adlung (adlung@de.ibm.com)
*/
#ifndef __s390mach_h
#define __s390mach_h
#include <asm/types.h>
typedef struct _mci {
__u32 to_be_defined_1 : 9;
__u32 cp : 1; /* channel-report pending */
__u32 to_be_defined_2 : 22;
__u32 to_be_defined_3;
} mci_t;
//
// machine-check-interruption code
//
typedef struct _mcic {
union _mcc {
__u64 mcl; /* machine check int. code - long info */
mci_t mcd; /* machine check int. code - details */
} mcc;
} __attribute__ ((packed)) mcic_t;
//
// Channel Report Word
//
typedef struct _crw {
__u32 res1 : 1; /* reserved zero */
__u32 slct : 1; /* solicited */
__u32 oflw : 1; /* overflow */
__u32 chn : 1; /* chained */
__u32 rsc : 4; /* reporting source code */
__u32 anc : 1; /* ancillary report */
__u32 res2 : 1; /* reserved zero */
__u32 erc : 6; /* error-recovery code */
__u32 rsid : 16; /* reporting-source ID */
} __attribute__ ((packed)) crw_t;
#define CRW_RSC_MONITOR 0x2 /* monitoring facility */
#define CRW_RSC_SCH 0x3 /* subchannel */
#define CRW_RSC_CPATH 0x4 /* channel path */
#define CRW_RSC_CONFIG 0x9 /* configuration-alert facility */
#define CRW_RSC_CSS 0xB /* channel subsystem */
#define CRW_ERC_EVENT 0x00 /* event information pending */
#define CRW_ERC_AVAIL 0x01 /* available */
#define CRW_ERC_INIT 0x02 /* initialized */
#define CRW_ERC_TERROR 0x03 /* temporary error */
#define CRW_ERC_IPARM 0x04 /* installed parm initialized */
#define CRW_ERC_TERM 0x05 /* terminal */
#define CRW_ERC_PERRN 0x06 /* perm. error, fac. not init */
#define CRW_ERC_PERRI 0x07 /* perm. error, facility init */
#define CRW_ERC_PMOD 0x08 /* installed parameters modified */
#define MAX_CRW_PENDING 1024
#define MAX_MACH_PENDING 1024
//
// CRW Entry
//
typedef struct _crwe {
crw_t crw;
struct _crwe *crwe_next;
} __attribute__ ((packed)) crwe_t;
typedef struct _mache {
spinlock_t lock;
unsigned int status;
mcic_t mcic;
union _mc {
crwe_t *crwe; /* CRW if applicable */
} mc;
struct _mache *next;
struct _mache *prev;
} mache_t;
#define MCHCHK_STATUS_TO_PROCESS 0x00000001
#define MCHCHK_STATUS_IN_PROGRESS 0x00000002
#define MCHCHK_STATUS_WAITING 0x00000004
void s390_init_machine_check( void );
void s390_do_machine_check ( void );
void s390_do_crw_pending ( crwe_t *pcrwe );
extern __inline__ int stcrw( __u32 *pcrw )
{
int ccode;
__asm__ __volatile__(
"STCRW 0(%1)\n\t"
"IPM %0\n\t"
"SRL %0,28\n\t"
: "=d" (ccode) : "a" (pcrw)
: "cc", "1" );
return ccode;
}
#endif /* __s390mach */
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