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f5daba1d HC |
1 | /* |
2 | * Data definitions for channel report processing | |
a53c8fab | 3 | * Copyright IBM Corp. 2000, 2009 |
f5daba1d HC |
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); | |
b4563e89 | 35 | void crw_wait_for_channel_report(void); |
f5daba1d HC |
36 | |
37 | #define NR_RSCS 16 | |
38 | ||
39 | #define CRW_RSC_MONITOR 0x2 /* monitoring facility */ | |
40 | #define CRW_RSC_SCH 0x3 /* subchannel */ | |
41 | #define CRW_RSC_CPATH 0x4 /* channel path */ | |
42 | #define CRW_RSC_CONFIG 0x9 /* configuration-alert facility */ | |
43 | #define CRW_RSC_CSS 0xB /* channel subsystem */ | |
44 | ||
45 | #define CRW_ERC_EVENT 0x00 /* event information pending */ | |
46 | #define CRW_ERC_AVAIL 0x01 /* available */ | |
47 | #define CRW_ERC_INIT 0x02 /* initialized */ | |
48 | #define CRW_ERC_TERROR 0x03 /* temporary error */ | |
49 | #define CRW_ERC_IPARM 0x04 /* installed parm initialized */ | |
50 | #define CRW_ERC_TERM 0x05 /* terminal */ | |
51 | #define CRW_ERC_PERRN 0x06 /* perm. error, fac. not init */ | |
52 | #define CRW_ERC_PERRI 0x07 /* perm. error, facility init */ | |
53 | #define CRW_ERC_PMOD 0x08 /* installed parameters modified */ | |
54 | ||
55 | static inline int stcrw(struct crw *pcrw) | |
56 | { | |
57 | int ccode; | |
58 | ||
59 | asm volatile( | |
60 | " stcrw 0(%2)\n" | |
61 | " ipm %0\n" | |
62 | " srl %0,28\n" | |
63 | : "=d" (ccode), "=m" (*pcrw) | |
64 | : "a" (pcrw) | |
65 | : "cc" ); | |
66 | return ccode; | |
67 | } | |
68 | ||
69 | #endif /* _ASM_S390_CRW_H */ |