| Heiko Carstens | f5daba1 | 2009-03-26 15:24:01 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Data definitions for channel report processing |
| 3 | * Copyright IBM Corp. 2000,2009 |
| 4 | * Author(s): Ingo Adlung <adlung@de.ibm.com>, |
| 5 | * Martin Schwidefsky <schwidefsky@de.ibm.com>, |
| 6 | * Cornelia Huck <cornelia.huck@de.ibm.com>, |
| 7 | * Heiko Carstens <heiko.carstens@de.ibm.com>, |
| 8 | */ |
| 9 | |
| 10 | #ifndef _ASM_S390_CRW_H |
| 11 | #define _ASM_S390_CRW_H |
| 12 | |
| 13 | #include <linux/types.h> |
| 14 | |
| 15 | /* |
| 16 | * Channel Report Word |
| 17 | */ |
| 18 | struct crw { |
| 19 | __u32 res1 : 1; /* reserved zero */ |
| 20 | __u32 slct : 1; /* solicited */ |
| 21 | __u32 oflw : 1; /* overflow */ |
| 22 | __u32 chn : 1; /* chained */ |
| 23 | __u32 rsc : 4; /* reporting source code */ |
| 24 | __u32 anc : 1; /* ancillary report */ |
| 25 | __u32 res2 : 1; /* reserved zero */ |
| 26 | __u32 erc : 6; /* error-recovery code */ |
| 27 | __u32 rsid : 16; /* reporting-source ID */ |
| 28 | } __attribute__ ((packed)); |
| 29 | |
| 30 | typedef void (*crw_handler_t)(struct crw *, struct crw *, int); |
| 31 | |
| 32 | extern int crw_register_handler(int rsc, crw_handler_t handler); |
| 33 | extern void crw_unregister_handler(int rsc); |
| 34 | extern void crw_handle_channel_report(void); |
| 35 | |
| 36 | #define NR_RSCS 16 |
| 37 | |
| 38 | #define CRW_RSC_MONITOR 0x2 /* monitoring facility */ |
| 39 | #define CRW_RSC_SCH 0x3 /* subchannel */ |
| 40 | #define CRW_RSC_CPATH 0x4 /* channel path */ |
| 41 | #define CRW_RSC_CONFIG 0x9 /* configuration-alert facility */ |
| 42 | #define CRW_RSC_CSS 0xB /* channel subsystem */ |
| 43 | |
| 44 | #define CRW_ERC_EVENT 0x00 /* event information pending */ |
| 45 | #define CRW_ERC_AVAIL 0x01 /* available */ |
| 46 | #define CRW_ERC_INIT 0x02 /* initialized */ |
| 47 | #define CRW_ERC_TERROR 0x03 /* temporary error */ |
| 48 | #define CRW_ERC_IPARM 0x04 /* installed parm initialized */ |
| 49 | #define CRW_ERC_TERM 0x05 /* terminal */ |
| 50 | #define CRW_ERC_PERRN 0x06 /* perm. error, fac. not init */ |
| 51 | #define CRW_ERC_PERRI 0x07 /* perm. error, facility init */ |
| 52 | #define CRW_ERC_PMOD 0x08 /* installed parameters modified */ |
| 53 | |
| 54 | static inline int stcrw(struct crw *pcrw) |
| 55 | { |
| 56 | int ccode; |
| 57 | |
| 58 | asm volatile( |
| 59 | " stcrw 0(%2)\n" |
| 60 | " ipm %0\n" |
| 61 | " srl %0,28\n" |
| 62 | : "=d" (ccode), "=m" (*pcrw) |
| 63 | : "a" (pcrw) |
| 64 | : "cc" ); |
| 65 | return ccode; |
| 66 | } |
| 67 | |
| 68 | #endif /* _ASM_S390_CRW_H */ |