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Heiko Carstensf5daba12009-03-26 15:24:01 +01001/*
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 */
18struct 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
30typedef void (*crw_handler_t)(struct crw *, struct crw *, int);
31
32extern int crw_register_handler(int rsc, crw_handler_t handler);
33extern void crw_unregister_handler(int rsc);
34extern void crw_handle_channel_report(void);
Sebastian Ottb4563e82010-02-26 22:37:26 +010035void crw_wait_for_channel_report(void);
Heiko Carstensf5daba12009-03-26 15:24:01 +010036
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
55static 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 */