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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-s390/] [s390io.h] - Rev 1765
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/* * arch/s390/kernel/s390io.h * * S390 version * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation * Author(s): Ingo Adlung (adlung@de.ibm.com) */ #ifndef __s390io_h #define __s390io_h #include <linux/tqueue.h> /* * IRQ data structure used by I/O subroutines * * Note : If bit flags are added, the "unused" value must be * decremented accordingly ! */ typedef struct _ioinfo { unsigned int irq; /* aka. subchannel number */ spinlock_t irq_lock; /* irq lock */ void *private_data; /* pointer to private data */ struct _ioinfo *prev; struct _ioinfo *next; __u8 st; /* subchannel type */ union { unsigned int info; struct { unsigned int busy : 1; /* device currently in use */ unsigned int oper : 1; /* device is operational */ unsigned int fast : 1; /* post with "channel end", ... */ /* ... don't wait for "device end" */ /* ... from do_IO() parameters */ unsigned int ready : 1; /* interrupt handler registered */ unsigned int haltio : 1; /* halt_IO in process */ unsigned int doio : 1; /* do_IO in process */ unsigned int w4final : 1; /* wait for final status, internally */ /* ... used with 'fast' setting only */ unsigned int repall : 1; /* report every interrupt status */ unsigned int unready : 1; /* deregister irq handler in process */ unsigned int d_disable : 1; /* delayed disabling required */ unsigned int w4sense : 1; /* SENSE status pending */ unsigned int syncio : 1; /* synchronous I/O requested */ unsigned int consns : 1; /* concurrent sense is available */ unsigned int delsense : 1; /* delayed SENSE required */ unsigned int s_pend : 1; /* status pending condition */ unsigned int pgid : 1; /* "path group ID" is valid */ unsigned int pgid_supp : 1; /* "path group ID" command is supported */ unsigned int esid : 1; /* Ext. SenseID supported by HW */ unsigned int repnone : 1; /* don't call IRQ handler on interrupt */ unsigned int newreq : 1; /* new register interface */ unsigned int dval : 1; /* device number valid */ unsigned int unknown : 1; /* unknown device - if SenseID failed */ unsigned int unfriendly: 1; /* device is locked by someone else */ unsigned int killio : 1; /* currently killing pending io */ unsigned int noio : 1; /* don't let drivers start io */ unsigned int notacccap : 1; /* capable of handling DEVSTAT_NOT_ACC */ unsigned int unused : (sizeof(unsigned int)*8 - 26); /* unused */ } __attribute__ ((packed)) flags; } ui; unsigned long u_intparm; /* user interruption parameter */ senseid_t senseid; /* SenseID info */ irq_desc_t irq_desc; /* irq descriptor */ not_oper_handler_func_t nopfunc; /* not oper handler */ __u8 opm; /* path mask of operational paths */ __u16 devno; /* device number */ pgid_t pgid; /* path group ID */ schib_t schib; /* subchannel information block */ orb_t orb; /* operation request block */ devstat_t devstat; /* device status */ ccw1_t senseccw; /* ccw for sense command */ __u8 sense_data[32];/* buffer for basic sense */ unsigned int stctl; /* accumulated status control from irb */ ssd_info_t ssd_info; /* subchannel description */ struct tq_struct pver_bh; /* path verification bottom half task */ atomic_t pver_pending; /* != 0 if path verification for sch is pending */ } __attribute__ ((aligned(8))) ioinfo_t; #define IOINFO_FLAGS_BUSY 0x80000000 #define IOINFO_FLAGS_OPER 0x40000000 #define IOINFO_FLAGS_FAST 0x20000000 #define IOINFO_FLAGS_READY 0x10000000 #define IOINFO_FLAGS_HALTIO 0x08000000 #define IOINFO_FLAGS_DOIO 0x04000000 #define IOINFO_FLAGS_DOIO_Q 0x02000000 #define IOINFO_FLAGS_W4FINAL 0x01000000 #define IOINFO_FLAGS_REPALL 0x00800000 extern ioinfo_t *ioinfo[]; int s390_set_private_data(int irq, void * data); void * s390_get_private_data(int irq); #define CHSC_SEI_ACC_CHPID 1 #define CHSC_SEI_ACC_LINKADDR 2 #define CHSC_SEI_ACC_FULLLINKADDR 3 #define CIO_PATHGONE_WAIT4INT 0x01 #define CIO_PATHGONE_IOERR 0x02 #define CIO_PATHGONE_DEVGONE 0x04 #endif /* __s390io_h */