ld_cac.c

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    1 /*      $NetBSD: ld_cac.c,v 1.11 2005/02/27 00:27:01 perry Exp $        */
    2 
    3 /*-
    4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Andrew Doran.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 /*
   40  * Compaq array controller front-end for ld(4) driver.
   41  */
   42 
   43 #include <sys/cdefs.h>
   44 __KERNEL_RCSID(0, "$NetBSD: ld_cac.c,v 1.11 2005/02/27 00:27:01 perry Exp $");
   45 
   46 #include "rnd.h"
   47 
   48 #include <sys/param.h>
   49 #include <sys/systm.h>
   50 #include <sys/kernel.h>
   51 #include <sys/device.h>
   52 #include <sys/buf.h>
   53 #include <sys/bufq.h>
   54 #include <sys/endian.h>
   55 #include <sys/dkio.h>
   56 #include <sys/disk.h>
   57 #if NRND > 0
   58 #include <sys/rnd.h>
   59 #endif
   60 
   61 #include <machine/bus.h>
   62 
   63 #include <dev/ldvar.h>
   64 
   65 #include <dev/ic/cacreg.h>
   66 #include <dev/ic/cacvar.h>
   67 
   68 struct ld_cac_softc {
   69         struct  ld_softc sc_ld;
   70         int     sc_hwunit;
   71         struct  timeval sc_serrtm;
   72         int     sc_serrcnt;
   73 };
   74 
   75 void    ld_cac_attach(struct device *, struct device *, void *);
   76 void    ld_cac_done(struct device *, void *, int);
   77 int     ld_cac_dump(struct ld_softc *, void *, int, int);
   78 int     ld_cac_match(struct device *, struct cfdata *, void *);
   79 int     ld_cac_start(struct ld_softc *, struct buf *);
   80 
   81 static const struct     timeval ld_cac_serrintvl = { 60, 0 };
   82 
   83 CFATTACH_DECL(ld_cac, sizeof(struct ld_cac_softc),
   84     ld_cac_match, ld_cac_attach, NULL, NULL);
   85 
   86 int
   87 ld_cac_match(struct device *parent, struct cfdata *match, void *aux)
   88 {
   89 
   90         return (1);
   91 }
   92 
   93 void
   94 ld_cac_attach(struct device *parent, struct device *self, void *aux)
   95 {
   96         struct cac_drive_info dinfo;
   97         struct cac_attach_args *caca;
   98         struct ld_softc *ld;
   99         struct ld_cac_softc *sc;
  100         struct cac_softc *cac;
  101         const char *type;
  102 
  103         sc = (struct ld_cac_softc *)self;
  104         ld = &sc->sc_ld;
  105         caca = (struct cac_attach_args *)aux;
  106         sc->sc_hwunit = caca->caca_unit;
  107         cac = (struct cac_softc *)parent;
  108 
  109         if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo),
  110             sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) {
  111                 aprint_error(": CMD_GET_LOG_DRV_INFO failed\n");
  112                 return;
  113         }
  114 
  115         ld->sc_secsize = CAC_GET2(dinfo.secsize);
  116         ld->sc_maxxfer = CAC_MAX_XFER;
  117         ld->sc_maxqueuecnt = CAC_MAX_CCBS / cac->sc_nunits;     /* XXX */
  118         ld->sc_secperunit = CAC_GET2(dinfo.ncylinders) *
  119             CAC_GET1(dinfo.nheads) * CAC_GET1(dinfo.nsectors);
  120         ld->sc_start = ld_cac_start;
  121         ld->sc_dump = ld_cac_dump;
  122 
  123         switch (CAC_GET1(dinfo.mirror)) {
  124         case 0:
  125                 type = "standalone disk or RAID0";
  126                 break;
  127         case 1:
  128                 type = "RAID4";
  129                 break;
  130         case 2:
  131                 type = "RAID1";
  132                 break;
  133         case 3:
  134                 type = "RAID5";
  135                 break;
  136         default:
  137                 type = "unknown type of";
  138                 break;
  139         }
  140 
  141         aprint_normal(": %s array\n", type);
  142 
  143         /* XXX We should verify this... */
  144         ld->sc_flags = LDF_ENABLED;
  145         ldattach(ld);
  146 }
  147 
  148 int
  149 ld_cac_start(struct ld_softc *ld, struct buf *bp)
  150 {
  151         int flags, cmd;
  152         struct cac_softc *cac;
  153         struct ld_cac_softc *sc;
  154         struct cac_context cc;
  155 
  156         sc = (struct ld_cac_softc *)ld;
  157         cac = (struct cac_softc *)ld->sc_dv.dv_parent;
  158 
  159         cc.cc_handler = ld_cac_done;
  160         cc.cc_context = bp;
  161         cc.cc_dv = &ld->sc_dv;
  162 
  163         if ((bp->b_flags & B_READ) == 0) {
  164                 cmd = CAC_CMD_WRITE;
  165                 flags = CAC_CCB_DATA_OUT;
  166         } else {
  167                 cmd = CAC_CMD_READ;
  168                 flags = CAC_CCB_DATA_IN;
  169         }
  170 
  171         return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit,
  172             bp->b_rawblkno, flags, &cc));
  173 }
  174 
  175 int
  176 ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
  177 {
  178         struct ld_cac_softc *sc;
  179 
  180         sc = (struct ld_cac_softc *)ld;
  181 
  182         return (cac_cmd((struct cac_softc *)ld->sc_dv.dv_parent,
  183             CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize,
  184             sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL));
  185 }
  186 
  187 void
  188 ld_cac_done(struct device *dv, void *context, int error)
  189 {
  190         struct buf *bp;
  191         struct ld_cac_softc *sc;
  192 
  193         bp = context;
  194 
  195         if ((error & CAC_RET_HARD_ERROR) != 0) {
  196                 printf("%s: hard error\n", dv->dv_xname);
  197                 error = EIO;
  198         }
  199         if ((error & CAC_RET_CMD_REJECTED) != 0) {
  200                 printf("%s: invalid request\n", dv->dv_xname);
  201                 error = EIO;
  202         }
  203         if ((error & CAC_RET_SOFT_ERROR) != 0) {
  204                 sc = (struct ld_cac_softc *)dv;
  205                 sc->sc_serrcnt++;
  206                 if (ratecheck(&sc->sc_serrtm, &ld_cac_serrintvl)) {
  207                         printf("%s: %d soft errors; array may be degraded\n",
  208                             dv->dv_xname, sc->sc_serrcnt);
  209                         sc->sc_serrcnt = 0;
  210                 }
  211                 error = 0;
  212         }
  213 
  214         if (error) {
  215                 bp->b_flags |= B_ERROR;
  216                 bp->b_error = error;
  217                 bp->b_resid = bp->b_bcount;
  218         } else
  219                 bp->b_resid = 0;
  220 
  221         lddone((struct ld_softc *)dv, bp);
  222 }

Cache object: fabf077d4a624fcb26f426558e207edf

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FreeBSD/Linux Kernel Cross Reference sys/dev/ic/ld_cac.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ld_cac.c