| /* |
| * Data definitions for channel report processing |
| * 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_CRW_H |
| #define _ASM_S390_CRW_H |
| |
| #include <linux/types.h> |
| |
| /* |
| * Channel Report Word |
| */ |
| 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)); |
| |
| typedef void (*crw_handler_t)(struct crw *, struct crw *, int); |
| |
| extern int crw_register_handler(int rsc, crw_handler_t handler); |
| extern void crw_unregister_handler(int rsc); |
| extern void crw_handle_channel_report(void); |
| void crw_wait_for_channel_report(void); |
| |
| #define NR_RSCS 16 |
| |
| #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 */ |
| |
| static inline int stcrw(struct crw *pcrw) |
| { |
| int ccode; |
| |
| asm volatile( |
| " stcrw 0(%2)\n" |
| " ipm %0\n" |
| " srl %0,28\n" |
| : "=d" (ccode), "=m" (*pcrw) |
| : "a" (pcrw) |
| : "cc" ); |
| return ccode; |
| } |
| |
| #endif /* _ASM_S390_CRW_H */ |
