FreeBSD/Linux Kernel Cross Reference
sys/dev/vme/xdvar.h

     /*      $NetBSD: xdvar.h,v 1.7 2002/07/23 20:49:55 hannken 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>
     */
    
    #include <sys/callout.h>
    
    /*
     * i/o request: wrapper for hardware's iopb data structure
     */
    
    struct xd_iorq {
            struct xd_iopb *iopb;           /* address of matching iopb */
            struct xd_iopb *dmaiopb;        /* DMA address of above */
            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) */
            struct buf *buf;                /* for NORM */
            bus_dmamap_t dmamap;            /* DMA I/O handle */
    };
    
    /*
     * 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 disk sc_dk;              /* generic disk info */
           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 callout sc_tick_ch;
   
           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 */
           bus_dma_tag_t dmatag;           /* Bus DMA tag */
   
           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 */
           bus_dmamap_t iopmap;            /* IOPB DMA handle */
           bus_dmamap_t auxmap;            /* auxiliary DMA handle */
           struct bufq_state sc_wq;        /* queued IOPBs for this controller */
           char freereq[XDC_MAXIOPB];      /* free list (stack) */
           char waitq[XDC_MAXIOPB];        /* wait queue */
           u_char nfree;                   /* number of iopbs free */
           u_char nrun;                    /* number running */
           u_char nwait;                   /* number of waiting iopbs */
           u_char ndone;                   /* number of done IORQs */
           u_char waithead;                /* head of queue */
           u_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 */

Cache object: 8a517420949acf27dc83d6984a4c25ef