/* SPDX-License-Identifier: GPL-2.0 */
/*
 *   Data definitions for channel report processing
 *    Copyright IBM Corp. 2000, 2009
 *    Author(s): Ingo Adlung <[email protected]>,
 *         Martin Schwidefsky <[email protected]>,
 *         Cornelia Huck <[email protected]>,
 */

#ifndef _ASM_S390_CRW_H
#define _ASM_S390_CRW_H

#include <linux/types.h>

/*
 * Channel Report Word
 */
struct crw {
    __u32 res1 :  1;   /* reserved zero */
    __u32 slct :  1;   /* solicited */
    __u32 oflw :  1;   /* overflow */
    __u32 chn  :  1;   /* chained */
    __u32 rsc  :  4;   /* reporting source code */
    __u32 anc  :  1;   /* ancillary report */
    __u32 res2 :  1;   /* reserved zero */
    __u32 erc  :  6;   /* error-recovery code */
    __u32 rsid : 16;   /* reporting-source ID */
} __attribute__ ((packed));

typedef void (*crw_handler_t)(struct crw *, struct crw *, int);

extern int crw_register_handler(int rsc, crw_handler_t handler);
extern void crw_unregister_handler(int rsc);
extern void crw_handle_channel_report(void);
void crw_wait_for_channel_report(void);

#define NR_RSCS 16

#define CRW_RSC_MONITOR  0x2  /* monitoring facility */
#define CRW_RSC_SCH     0x3  /* subchannel */
#define CRW_RSC_CPATH     0x4  /* channel path */
#define CRW_RSC_CONFIG     0x9  /* configuration-alert facility */
#define CRW_RSC_CSS     0xB  /* channel subsystem */

#define CRW_ERC_EVENT     0x00 /* event information pending */
#define CRW_ERC_AVAIL     0x01 /* available */
#define CRW_ERC_INIT     0x02 /* initialized */
#define CRW_ERC_TERROR     0x03 /* temporary error */
#define CRW_ERC_IPARM     0x04 /* installed parm initialized */
#define CRW_ERC_TERM     0x05 /* terminal */
#define CRW_ERC_PERRN     0x06 /* perm. error, fac. not init */
#define CRW_ERC_PERRI     0x07 /* perm. error, facility init */
#define CRW_ERC_PMOD     0x08 /* installed parameters modified */

#endif /* _ASM_S390_CRW_H */