xref: /openbmc/linux/arch/s390/include/asm/crw.h (revision f36e7c98)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  *   Data definitions for channel report processing
4  *    Copyright IBM Corp. 2000, 2009
5  *    Author(s): Ingo Adlung <adlung@de.ibm.com>,
6  *		 Martin Schwidefsky <schwidefsky@de.ibm.com>,
7  *		 Cornelia Huck <cornelia.huck@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 void crw_wait_for_channel_report(void);
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 #endif /* _ASM_S390_CRW_H */
56