patch-2.3.99-pre8 linux/include/asm-s390/s390io.h

• Lines: 86
• Date: Fri May 12 11:41:44 2000
• Orig file: v2.3.99-pre7/linux/include/asm-s390/s390io.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre7/linux/include/asm-s390/s390io.h linux/include/asm-s390/s390io.h
@@ -0,0 +1,85 @@
+/*
+ *  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 */
+
+     struct _ioinfo *prev;
+     struct _ioinfo *next;
+
+     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  unused    : (sizeof(unsigned int)*8 - 18); /* unused */
+              } __attribute__ ((packed)) flags;
+        } ui;
+
+     unsigned long u_intparm;     /* user interruption parameter */
+     senseid_t     senseid;       /* SenseID info */
+     irq_desc_t    irq_desc;      /* irq descriptor */
+     __u8          ulpm;          /* logical path mask used for I/O */
+     __u8          opm;           /* path mask of operational paths */
+     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 */
+     unsigned int  stctl;         /* accumulated status control from irb */
+     unsigned long qintparm;      /* queued interruption parameter  */
+     unsigned long qflag;         /* queued flags */
+     unsigned char qlpm;          /* queued logical path mask */
+
+   } __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[];
+
+#endif  /* __s390io_h */
+