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author | David S. Miller <davem@davemloft.net> | 2009-03-28 00:19:16 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2009-03-28 00:19:16 (GMT) |
commit | a83398570e17af6bb81eb94f4f5dd356bd2828d8 (patch) | |
tree | 5b5c7c3a56898485479291b7c964a1f3887d469c /arch/s390/include/asm/crw.h | |
parent | f9384d41c02408dd404aa64d66d0ef38adcf6479 (diff) | |
parent | 0b4d569de222452bcb55a4a536ade6cf4d8d1e30 (diff) | |
download | linux-fsl-qoriq-a83398570e17af6bb81eb94f4f5dd356bd2828d8.tar.xz |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'arch/s390/include/asm/crw.h')
-rw-r--r-- | arch/s390/include/asm/crw.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/s390/include/asm/crw.h b/arch/s390/include/asm/crw.h new file mode 100644 index 0000000..2185a6d --- /dev/null +++ b/arch/s390/include/asm/crw.h @@ -0,0 +1,68 @@ +/* + * 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); + +#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 */ + +static inline int stcrw(struct crw *pcrw) +{ + int ccode; + + asm volatile( + " stcrw 0(%2)\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (ccode), "=m" (*pcrw) + : "a" (pcrw) + : "cc" ); + return ccode; +} + +#endif /* _ASM_S390_CRW_H */ |