xy and xd drivers from chuck

1 files changed, 167 insertions, 0 deletions

diff --git a/sys/arch/sun3/dev/xdvar.h b/sys/arch/sun3/dev/xdvar.h
new file mode 100644
index 00000000000..918c22d1f3d
--- /dev/null
+++ b/sys/arch/sun3/dev/xdvar.h
@@ -0,0 +1,167 @@
+/* $NetBSD: xdvar.h,v 1.1 1995/10/30 20:58:19 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 d v a r . h 
+ *
+ * this file defines the software structure we use to control the 
+ * 753/7053.
+ *
+ * author: Chuck Cranor <chuck@ccrc.wustl.edu>
+ */
+
+/*
+ * i/o request: wrapper for hardware's iopb data structure
+ */
+
+struct xd_iorq {
+  struct xd_iopb *iopb;             /* address of matching iopb */
+  struct xdc_softc *xdc;            /* who we are working with */
+  struct xd_softc *xd;              /* 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 XD_SUB_MASK 0xf0            /* mask bits for state */
+#define XD_SUB_FREE 0x00            /* free */
+#define XD_SUB_NORM 0x10            /* normal I/O request */
+#define XD_SUB_WAIT 0x20            /* normal I/O request in the 
+                                             context of a process */
+#define XD_SUB_POLL 0x30            /* polled mode */
+#define XD_SUB_DONE 0x40            /* not active, but can't be free'd yet */
+#define XD_SUB_NOQ  0x50            /* don't queue, just submit (internal) */
+
+#define XD_STATE(X) ((X) & XD_SUB_MASK) /* extract state from mode */
+#define XD_NEWSTATE(OLD, NEW) (((OLD) & ~XD_SUB_MASK) |(NEW)) /* new state */
+
+
+/*
+ * other mode data
+ */
+
+#define XD_MODE_VERBO 0x08          /* print error messages */
+#define XD_MODE_B144  0x04          /* handling a bad144 sector */
+
+
+/*
+ * software timers and flags
+ */
+
+#define XDC_SUBWAITLIM 4   /* max number of "done" IOPBs there can be
+				where we still allow a SUB_WAIT command */
+#define XDC_TICKCNT (5*hz) /* call xdc_tick on this interval (5 sec) */
+#define XDC_MAXTTL     2   /* max number of xd ticks to live */
+#define XDC_NOUNIT (-1)    /* for xdcmd: no unit number */
+
+/*
+ * a "xd_softc" structure contains per-disk state info.
+ */
+
+struct xd_softc {
+  struct device sc_dev;            /* device struct, reqd by autoconf */
+  struct dkdevice sc_dk;           /* dkdevice: hook for iostat */
+  struct xdc_softc *parent;        /* parent */
+  u_short flags;                   /* flags */
+  u_short state;                   /* device state */
+  int xd_drive;                    /* unit number */
+  /* 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 dkbad dkb;                /* bad144 sectors */
+};
+
+
+/*
+ * flags
+ */
+
+#define XD_WLABEL 0x0001           /* write label */
+/*
+ * state
+ */
+
+#define XD_DRIVE_UNKNOWN 0         /* never talked to it */
+#define XD_DRIVE_ATTACHING 1       /* attach in progress */
+#define XD_DRIVE_NOLABEL 2         /* drive on-line, no label */
+#define XD_DRIVE_ONLINE  3         /* drive is on-line */
+
+/*
+ * a "xdc_softc" structure contains per-disk-controller state info,
+ * including a list of active controllers.
+ */
+
+struct xdc_softc {
+  struct device sc_dev;            /* device struct, reqd by autoconf */
+  struct evcnt sc_intrcnt;         /* event counter (for vmstat -i) */
+
+  struct xdc *xdc;                 /* vaddr of vme registers */
+
+  struct xd_softc *sc_drives[XDC_MAXDEV];   /* drives on this controller */
+  int ipl;                         /* interrupt level */
+  int vector;                      /* interrupt vector */
+
+  struct xd_iorq *reqs;            /* i/o requests */
+  struct xd_iopb *iopbase;         /* iopb base addr (maps iopb->iorq) */
+  struct xd_iopb *dvmaiopb;        /* iopb base in DVMA space, not kvm */
+  struct buf sc_wq;                /* queue'd IOPBs for this controller */
+  char freereq[XDC_MAXIOPB];       /* free list (stack) */
+  char waitq[XDC_MAXIOPB];         /* wait queue */
+  char nfree;                      /* number of iopbs free */
+  char nrun;                       /* number running */
+  char nwait;                      /* number of waiting iopbs */
+  char ndone;                      /* number of done IORQs */
+  char waithead;                   /* head of queue */
+  char waitend;                    /* end of queue */
+};
+
+/*
+ * reset blast modes
+ */
+
+#define XD_RSET_NONE (-1)          /* restart all requests */
+#define XD_RSET_ALL  (-2)          /* don't restart anything */