xy and xd drivers from chuck

1 files changed, 168 insertions, 0 deletions

diff --git a/sys/arch/sun3/dev/xyvar.h b/sys/arch/sun3/dev/xyvar.h
new file mode 100644
index 00000000000..02fe755dc72
--- /dev/null
+++ b/sys/arch/sun3/dev/xyvar.h
@@ -0,0 +1,168 @@
+/* $NetBSD: xyvar.h,v 1.1 1995/10/30 20:58:23 gwr Exp $ */
+
+/*
+ *
+ * Copyright (c) 1995 Charles D. Cranor
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Charles D. Cranor.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * x y v a r . h 
+ *
+ * this file defines the software structure we use to control the 
+ * 450/451.
+ *
+ * author: Chuck Cranor <chuck@ccrc.wustl.edu>
+ */
+
+/*
+ * i/o request: wrapper for hardware's iopb data structure
+ */
+
+struct xy_iorq {
+  struct xy_iopb *iopb;             /* address of matching iopb */
+  struct xyc_softc *xyc;            /* who we are working with */
+  struct xy_softc *xy;              /* which disk */
+  int ttl;                          /* time to live */
+  int mode;                         /* current mode (state+other data) */
+  int tries;                        /* number of times we have tried it */
+  int errno;                        /* error number if we fail */
+  int lasterror;		    /* last error we got */
+  int blockno;                      /* starting block no for this xfer */
+  int sectcnt;                      /* number of sectors in xfer */
+  char *dbuf;                       /* KVA of data buffer (advances) */
+  char *dbufbase;                   /* base of dbuf */
+  struct buf *buf;                  /* for NORM */
+};
+
+/*
+ * state
+ */
+
+#define XY_SUB_MASK 0xf0            /* mask bits for state */
+#define XY_SUB_FREE 0x00            /* free */
+#define XY_SUB_NORM 0x10            /* normal I/O request */
+#define XY_SUB_WAIT 0x20            /* normal I/O request in the 
+                                             context of a process */
+#define XY_SUB_POLL 0x30            /* polled mode */
+#define XY_SUB_DONE 0x40            /* not active, but can't be free'd yet */
+#define XY_SUB_NOQ  0x50            /* don't queue, just submit (internal) */
+
+#define XY_STATE(X) ((X) & XY_SUB_MASK) /* extract state from mode */
+#define XY_NEWSTATE(OLD, NEW) (((OLD) & ~XY_SUB_MASK) |(NEW)) /* new state */
+
+
+/*
+ * other mode data
+ */
+
+#define XY_MODE_VERBO 0x08          /* print error messages */
+#define XY_MODE_B144  0x04          /* handling a bad144 sector */
+
+
+/*
+ * software timers and flags
+ */
+
+#define XYC_SUBWAITLIM 4   /* max number of "done" IOPBs there can be
+				where we still allow a SUB_WAIT command */
+#define XYC_TICKCNT (5*hz) /* call xyc_tick on this interval (5 sec) */
+#define XYC_MAXTTL     2   /* max number of xy ticks to live */
+#define XYC_NOUNIT (-1)    /* for xycmd: no unit number */
+
+/*
+ * a "xy_softc" structure contains per-disk state info.
+ */
+
+struct xy_softc {
+  struct device sc_dev;            /* device struct, reqd by autoconf */
+  struct dkdevice sc_dk;           /* dkdevice: hook for iostat */
+  struct xyc_softc *parent;        /* parent */
+  u_short flags;                   /* flags */
+  u_short state;                   /* device state */
+  int xy_drive;                    /* unit number */
+  int drive_type;		   /* drive type (as per disk) */
+  /* geometry */
+  u_short ncyl, acyl, pcyl;        /* number of cyl's */
+  u_short sectpercyl;              /* nhead*nsect */
+  u_char nhead;                    /* number of heads */
+  u_char nsect;                    /* number of sectors per track */
+  u_char hw_spt;                   /* as above, but includes spare sectors */
+  struct xy_iorq *xyrq;		   /* this disk's ioreq structure */
+  struct buf xyq;		   /* queue'd I/O requests */
+  struct dkbad dkb;                /* bad144 sectors */
+};
+
+/*
+ * flags
+ */
+
+#define XY_WLABEL 0x0001           /* write label */
+/*
+ * state
+ */
+
+#define XY_DRIVE_UNKNOWN 0         /* never talked to it */
+#define XY_DRIVE_ATTACHING 1       /* attach in progress */
+#define XY_DRIVE_NOLABEL 2         /* drive on-line, no label */
+#define XY_DRIVE_ONLINE  3         /* drive is on-line */
+
+/*
+ * a "xyc_softc" structure contains per-disk-controller state info,
+ * including a list of active controllers.
+ */
+
+struct xyc_softc {
+  struct device sc_dev;            /* device struct, reqd by autoconf */
+  struct evcnt sc_intrcnt;         /* event counter (for vmstat -i) */
+
+  struct xyc *xyc;                 /* vaddr of vme registers */
+
+  struct xy_softc *sc_drives[XYC_MAXDEV];   /* drives on this controller */
+  int ipl;                         /* interrupt level */
+  int vector;                      /* interrupt vector */
+
+  struct xy_iorq *reqs;            /* i/o requests */
+  struct xy_iopb *iopbase;         /* iopb base addr (maps iopb->iorq) */
+  struct xy_iopb *dvmaiopb;        /* iopb base in DVMA space, not kvm */
+
+  struct xy_iorq *ciorq;	   /* controller's iorq */
+  struct xy_iopb *ciopb;	   /* controller's iopb */
+
+  int xy_hand;			   /* hand */
+  struct xy_iorq *xy_chain[XYC_MAXIOPB];
+				   /* current chain */
+  int no_ols;			   /* disable overlap seek for stupid 450s */
+};
+
+/*
+ * reset blast modes
+ */
+
+#define XY_RSET_NONE (struct xy_iorq *)(-1)   /* restart all requests */
+#define XY_RSET_ALL  (struct xy_iorq *)(-2)   /* don't restart anything */