Release 4.14 arch/s390/include/asm/crw.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 *   Data definitions for channel report processing
 *    Copyright IBM Corp. 2000, 2009
 *    Author(s): Ingo Adlung <adlung@de.ibm.com>,
 *               Martin Schwidefsky <schwidefsky@de.ibm.com>,
 *               Cornelia Huck <cornelia.huck@de.ibm.com>,
 *               Heiko Carstens <heiko.carstens@de.ibm.com>,
 */

#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 */
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Directory: arch/s390/include/asm

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