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)
11 #include <linux/tqueue.h>
14 * IRQ data structure used by I/O subroutines
16 * Note : If bit flags are added, the "unused" value must be
17 * decremented accordingly !
19 typedef struct _ioinfo {
20 unsigned int irq; /* aka. subchannel number */
21 spinlock_t irq_lock; /* irq lock */
22 void *private_data; /* pointer to private data */
27 __u8 st; /* subchannel type */
32 unsigned int busy : 1; /* device currently in use */
33 unsigned int oper : 1; /* device is operational */
34 unsigned int fast : 1; /* post with "channel end", ... */
35 /* ... don't wait for "device end" */
36 /* ... from do_IO() parameters */
37 unsigned int ready : 1; /* interrupt handler registered */
38 unsigned int haltio : 1; /* halt_IO in process */
39 unsigned int doio : 1; /* do_IO in process */
40 unsigned int w4final : 1; /* wait for final status, internally */
41 /* ... used with 'fast' setting only */
42 unsigned int repall : 1; /* report every interrupt status */
43 unsigned int unready : 1; /* deregister irq handler in process */
44 unsigned int d_disable : 1; /* delayed disabling required */
45 unsigned int w4sense : 1; /* SENSE status pending */
46 unsigned int syncio : 1; /* synchronous I/O requested */
47 unsigned int consns : 1; /* concurrent sense is available */
48 unsigned int delsense : 1; /* delayed SENSE required */
49 unsigned int s_pend : 1; /* status pending condition */
50 unsigned int pgid : 1; /* "path group ID" is valid */
51 unsigned int pgid_supp : 1; /* "path group ID" command is supported */
52 unsigned int esid : 1; /* Ext. SenseID supported by HW */
53 unsigned int repnone : 1; /* don't call IRQ handler on interrupt */
54 unsigned int newreq : 1; /* new register interface */
55 unsigned int dval : 1; /* device number valid */
56 unsigned int unknown : 1; /* unknown device - if SenseID failed */
57 unsigned int unfriendly: 1; /* device is locked by someone else */
58 unsigned int killio : 1; /* currently killing pending io */
59 unsigned int noio : 1; /* don't let drivers start io */
60 unsigned int notacccap : 1; /* capable of handling DEVSTAT_NOT_ACC */
61 unsigned int unused : (sizeof(unsigned int)*8 - 26); /* unused */
62 } __attribute__ ((packed)) flags;
65 unsigned long u_intparm; /* user interruption parameter */
66 senseid_t senseid; /* SenseID info */
67 irq_desc_t irq_desc; /* irq descriptor */
68 not_oper_handler_func_t nopfunc; /* not oper handler */
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 senseccw; /* ccw for sense command */
76 __u8 sense_data[32];/* buffer for basic sense */
77 unsigned int stctl; /* accumulated status control from irb */
78 ssd_info_t ssd_info; /* subchannel description */
79 struct tq_struct pver_bh; /* path verification bottom half task */
80 atomic_t pver_pending; /* != 0 if path verification for sch is pending */
81 } __attribute__ ((aligned(8))) ioinfo_t;
83 #define IOINFO_FLAGS_BUSY 0x80000000
84 #define IOINFO_FLAGS_OPER 0x40000000
85 #define IOINFO_FLAGS_FAST 0x20000000
86 #define IOINFO_FLAGS_READY 0x10000000
87 #define IOINFO_FLAGS_HALTIO 0x08000000
88 #define IOINFO_FLAGS_DOIO 0x04000000
89 #define IOINFO_FLAGS_DOIO_Q 0x02000000
90 #define IOINFO_FLAGS_W4FINAL 0x01000000
91 #define IOINFO_FLAGS_REPALL 0x00800000
93 extern ioinfo_t *ioinfo[];
94 int s390_set_private_data(int irq, void * data);
95 void * s390_get_private_data(int irq);
97 #define CHSC_SEI_ACC_CHPID 1
98 #define CHSC_SEI_ACC_LINKADDR 2
99 #define CHSC_SEI_ACC_FULLLINKADDR 3
101 #define CIO_PATHGONE_WAIT4INT 0x01
102 #define CIO_PATHGONE_IOERR 0x02
103 #define CIO_PATHGONE_DEVGONE 0x04
105 #endif /* __s390io_h */