1 /* 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 */ 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 static 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 */ 70