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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | /* * 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 /* * 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 doio_q : 1; /* do_IO queued - only possible ... */ /* ... if 'fast' is set too */ 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 rcd : 1; /* RCD supported by HW */ unsigned int repnone : 1; /* don't call IRQ handler on interrupt */ unsigned int dval : 1; /* device number valid */ unsigned int unknown : 1; /* unknown device - if SenseID failed */ unsigned int unused : (sizeof(unsigned int)*8 - 23); /* 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 ulpm; /* logical path mask used for I/O */ __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 *qcpa; /* queued channel program */ ccw1_t senseccw; /* ccw for sense command */ __u8 sense_data[32];/* buffer for basic sense */ unsigned int stctl; /* accumulated status control from irb */ unsigned long qintparm; /* queued interruption parameter */ unsigned long qflag; /* queued flags */ __u8 qlpm; /* queued logical path mask */ ssd_info_t ssd_info; /* subchannel description */ } __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 #endif /* __s390io_h */ |