2 * arch/s390/kernel/s390io.h
5 * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Ingo Adlung (adlung@de.ibm.com)
13 * IRQ data structure used by I/O subroutines
15 * Note : If bit flags are added, the "unused" value must be
16 * decremented accordingly !
18 typedef struct _ioinfo {
19 unsigned int irq; /* aka. subchannel number */
20 spinlock_t irq_lock; /* irq lock */
21 void *private_data; /* pointer to private data */
26 __u8 st; /* subchannel type */
31 unsigned int busy : 1; /* device currently in use */
32 unsigned int oper : 1; /* device is operational */
33 unsigned int fast : 1; /* post with "channel end", ... */
34 /* ... don't wait for "device end" */
35 /* ... from do_IO() parameters */
36 unsigned int ready : 1; /* interrupt handler registered */
37 unsigned int haltio : 1; /* halt_IO in process */
38 unsigned int doio : 1; /* do_IO in process */
39 unsigned int doio_q : 1; /* do_IO queued - only possible ... */
40 /* ... if 'fast' is set too */
41 unsigned int w4final : 1; /* wait for final status, internally */
42 /* ... used with 'fast' setting only */
43 unsigned int repall : 1; /* report every interrupt status */
44 unsigned int unready : 1; /* deregister irq handler in process */
45 unsigned int d_disable : 1; /* delayed disabling required */
46 unsigned int w4sense : 1; /* SENSE status pending */
47 unsigned int syncio : 1; /* synchronous I/O requested */
48 unsigned int consns : 1; /* concurrent sense is available */
49 unsigned int delsense : 1; /* delayed SENSE required */
50 unsigned int s_pend : 1; /* status pending condition */
51 unsigned int pgid : 1; /* "path group ID" is valid */
52 unsigned int pgid_supp : 1; /* "path group ID" command is supported */
53 unsigned int esid : 1; /* Ext. SenseID supported by HW */
54 unsigned int rcd : 1; /* RCD supported by HW */
55 unsigned int repnone : 1; /* don't call IRQ handler on interrupt */
56 unsigned int newreq : 1; /* new register interface */
57 unsigned int dval : 1; /* device number valid */
58 unsigned int unknown : 1; /* unknown device - if SenseID failed */
59 unsigned int unfriendly: 1; /* device is locked by someone else */
60 unsigned int unused : (sizeof(unsigned int)*8 - 25); /* unused */
61 } __attribute__ ((packed)) flags;
64 unsigned long u_intparm; /* user interruption parameter */
65 senseid_t senseid; /* SenseID info */
66 irq_desc_t irq_desc; /* irq descriptor */
67 not_oper_handler_func_t nopfunc; /* not oper handler */
68 __u8 ulpm; /* logical path mask used for I/O */
69 __u8 opm; /* path mask of operational paths */
70 __u16 devno; /* device number */
71 pgid_t pgid; /* path group ID */
72 schib_t schib; /* subchannel information block */
73 orb_t orb; /* operation request block */
74 devstat_t devstat; /* device status */
75 ccw1_t *qcpa; /* queued channel program */
76 ccw1_t senseccw; /* ccw for sense command */
77 __u8 sense_data[32];/* buffer for basic sense */
78 unsigned int stctl; /* accumulated status control from irb */
79 unsigned long qintparm; /* queued interruption parameter */
80 unsigned long qflag; /* queued flags */
81 __u8 qlpm; /* queued logical path mask */
82 ssd_info_t ssd_info; /* subchannel description */
84 } __attribute__ ((aligned(8))) ioinfo_t;
86 #define IOINFO_FLAGS_BUSY 0x80000000
87 #define IOINFO_FLAGS_OPER 0x40000000
88 #define IOINFO_FLAGS_FAST 0x20000000
89 #define IOINFO_FLAGS_READY 0x10000000
90 #define IOINFO_FLAGS_HALTIO 0x08000000
91 #define IOINFO_FLAGS_DOIO 0x04000000
92 #define IOINFO_FLAGS_DOIO_Q 0x02000000
93 #define IOINFO_FLAGS_W4FINAL 0x01000000
94 #define IOINFO_FLAGS_REPALL 0x00800000
96 extern ioinfo_t *ioinfo[];
97 int s390_set_private_data(int irq, void * data);
98 void * s390_get_private_data(int irq);
100 #define CHSC_SEI_ACC_CHPID 1
101 #define CHSC_SEI_ACC_LINKADDR 2
102 #define CHSC_SEI_ACC_FULLLINKADDR 3
104 #endif /* __s390io_h */