arch/s390/include/asm/crw.h

   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  *               Heiko Carstens <heiko.carstens@de.ibm.com>,
   9  */
  10
  11 #ifndef _ASM_S390_CRW_H
  12 #define _ASM_S390_CRW_H
  13
  14 #include <linux/types.h>
  15
  16 /*
  17  * Channel Report Word
  18  */
  19 struct crw {
  20         __u32 res1 :  1;   /* reserved zero */
  21         __u32 slct :  1;   /* solicited */
  22         __u32 oflw :  1;   /* overflow */
  23         __u32 chn  :  1;   /* chained */
  24         __u32 rsc  :  4;   /* reporting source code */
  25         __u32 anc  :  1;   /* ancillary report */
  26         __u32 res2 :  1;   /* reserved zero */
  27         __u32 erc  :  6;   /* error-recovery code */
  28         __u32 rsid : 16;   /* reporting-source ID */
  29 } __attribute__ ((packed));
  30
  31 typedef void (*crw_handler_t)(struct crw *, struct crw *, int);
  32
  33 extern int crw_register_handler(int rsc, crw_handler_t handler);
  34 extern void crw_unregister_handler(int rsc);
  35 extern void crw_handle_channel_report(void);
  36 void crw_wait_for_channel_report(void);
  37
  38 #define NR_RSCS 16
  39
  40 #define CRW_RSC_MONITOR  0x2  /* monitoring facility */
  41 #define CRW_RSC_SCH      0x3  /* subchannel */
  42 #define CRW_RSC_CPATH    0x4  /* channel path */
  43 #define CRW_RSC_CONFIG   0x9  /* configuration-alert facility */
  44 #define CRW_RSC_CSS      0xB  /* channel subsystem */
  45
  46 #define CRW_ERC_EVENT    0x00 /* event information pending */
  47 #define CRW_ERC_AVAIL    0x01 /* available */
  48 #define CRW_ERC_INIT     0x02 /* initialized */
  49 #define CRW_ERC_TERROR   0x03 /* temporary error */
  50 #define CRW_ERC_IPARM    0x04 /* installed parm initialized */
  51 #define CRW_ERC_TERM     0x05 /* terminal */
  52 #define CRW_ERC_PERRN    0x06 /* perm. error, fac. not init */
  53 #define CRW_ERC_PERRI    0x07 /* perm. error, facility init */
  54 #define CRW_ERC_PMOD     0x08 /* installed parameters modified */
  55
  56 #endif /* _ASM_S390_CRW_H */