ld_mlx.c

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    1 /*      $NetBSD: ld_mlx.c,v 1.7 2002/10/02 16:33:34 thorpej Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 2001 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  * Mylex DAC960 front-end for ld(4) driver.
   41  */
   42 
   43 #include <sys/cdefs.h>
   44 __KERNEL_RCSID(0, "$NetBSD: ld_mlx.c,v 1.7 2002/10/02 16:33:34 thorpej 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/endian.h>
   54 #include <sys/dkio.h>
   55 #include <sys/disk.h>
   56 #if NRND > 0
   57 #include <sys/rnd.h>
   58 #endif
   59 
   60 #include <machine/vmparam.h>
   61 #include <machine/bus.h>
   62 
   63 #include <dev/ldvar.h>
   64 
   65 #include <dev/ic/mlxreg.h>
   66 #include <dev/ic/mlxio.h>
   67 #include <dev/ic/mlxvar.h>
   68 
   69 struct ld_mlx_softc {
   70         struct  ld_softc sc_ld;
   71         int     sc_hwunit;
   72 };
   73 
   74 static void     ld_mlx_attach(struct device *, struct device *, void *);
   75 static int      ld_mlx_detach(struct device *, int);
   76 static int      ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int,
   77                              struct buf *);
   78 static int      ld_mlx_dump(struct ld_softc *, void *, int, int);
   79 static void     ld_mlx_handler(struct mlx_ccb *);
   80 static int      ld_mlx_match(struct device *, struct cfdata *, void *);
   81 static int      ld_mlx_start(struct ld_softc *, struct buf *);
   82 
   83 CFATTACH_DECL(ld_mlx, sizeof(struct ld_mlx_softc),
   84     ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL);
   85 
   86 static int
   87 ld_mlx_match(struct device *parent, struct cfdata *match, void *aux)
   88 {
   89 
   90         return (1);
   91 }
   92 
   93 static void
   94 ld_mlx_attach(struct device *parent, struct device *self, void *aux)
   95 {
   96         struct mlx_attach_args *mlxa;
   97         struct ld_mlx_softc *sc;
   98         struct ld_softc *ld;
   99         struct mlx_softc *mlx;
  100         struct mlx_sysdrive *ms;
  101         const char *statestr;
  102 
  103         sc = (struct ld_mlx_softc *)self;
  104         ld = &sc->sc_ld;
  105         mlx = (struct mlx_softc *)parent;
  106         mlxa = aux;
  107         ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit];
  108 
  109         sc->sc_hwunit = mlxa->mlxa_unit;
  110         ld->sc_maxxfer = MLX_MAX_XFER;
  111         ld->sc_secsize = MLX_SECTOR_SIZE;
  112         ld->sc_maxqueuecnt = 1;
  113         ld->sc_start = ld_mlx_start;
  114         ld->sc_dump = ld_mlx_dump;
  115         ld->sc_secperunit = ms->ms_size;
  116 
  117         /*
  118          * Report on current status, and attach to the ld driver proper.
  119          */
  120         switch (ms->ms_state) {
  121         case MLX_SYSD_ONLINE:
  122                 statestr = "online";
  123                 ld->sc_flags = LDF_ENABLED;
  124                 break;
  125 
  126         case MLX_SYSD_CRITICAL:
  127                 statestr = "critical";
  128                 ld->sc_flags = LDF_ENABLED;
  129                 break;
  130 
  131         case MLX_SYSD_OFFLINE:
  132                 statestr = "offline";
  133                 break;
  134 
  135         default:
  136                 statestr = "state unknown";
  137                 break;
  138         }
  139 
  140         if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD)
  141                 printf(": JBOD, %s\n", statestr);
  142         else
  143                 printf(": RAID%d, %s\n", ms->ms_raidlevel, statestr);
  144 
  145         ldattach(ld);
  146 }
  147 
  148 static int
  149 ld_mlx_detach(struct device *dv, int flags)
  150 {
  151         int rv;
  152 
  153         if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0)
  154                 return (rv);
  155         ldenddetach((struct ld_softc *)dv);
  156         mlx_flush((struct mlx_softc *)dv->dv_parent, 1);
  157 
  158         return (0);
  159 }
  160 
  161 static int
  162 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno,
  163              int dowrite, struct buf *bp)
  164 {
  165         struct mlx_ccb *mc;
  166         struct mlx_softc *mlx;
  167         int s, rv;
  168         bus_addr_t sgphys;
  169 
  170         mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent;
  171 
  172         if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0)
  173                 return (rv);
  174 
  175         /* Map the data transfer. */
  176         rv = mlx_ccb_map(mlx, mc, data, datasize,
  177             dowrite ? MC_XFER_OUT : MC_XFER_IN);
  178         if (rv != 0) {
  179                 mlx_ccb_free(mlx, mc);
  180                 return (rv);
  181         }
  182 
  183         /* Build the command. */
  184         sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident);
  185         datasize /= MLX_SECTOR_SIZE;
  186 
  187         if (mlx->mlx_ci.ci_iftype <= 2)
  188                 mlx_make_type1(mc,
  189                     dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD,
  190                     datasize & 0xff, blkno, sc->sc_hwunit, sgphys,
  191                     mc->mc_nsgent);
  192         else
  193                 mlx_make_type5(mc,
  194                     dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG,
  195                     datasize & 0xff,
  196                     (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07),
  197                     blkno, sgphys, mc->mc_nsgent);
  198 
  199         if (bp == NULL) {
  200                 s = splbio();
  201                 rv = mlx_ccb_poll(mlx, mc, 10000);
  202                 mlx_ccb_unmap(mlx, mc);
  203                 mlx_ccb_free(mlx, mc);
  204                 splx(s);
  205         } else {
  206                 mc->mc_mx.mx_handler = ld_mlx_handler;
  207                 mc->mc_mx.mx_context = bp;
  208                 mc->mc_mx.mx_dv = &sc->sc_ld.sc_dv;
  209                 mlx_ccb_enqueue(mlx, mc);
  210                 rv = 0;
  211         }
  212 
  213         return (rv);
  214 }
  215 
  216 static int
  217 ld_mlx_start(struct ld_softc *ld, struct buf *bp)
  218 {
  219 
  220         return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data,
  221             bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
  222 }
  223 
  224 static void
  225 ld_mlx_handler(struct mlx_ccb *mc)
  226 {
  227         struct buf *bp;
  228         struct mlx_context *mx;
  229         struct ld_mlx_softc *sc;
  230         struct mlx_softc *mlx;
  231 
  232         mx = &mc->mc_mx;
  233         bp = mx->mx_context;
  234         sc = (struct ld_mlx_softc *)mx->mx_dv;
  235         mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent;
  236 
  237         if (mc->mc_status != MLX_STATUS_OK) {
  238                 bp->b_flags |= B_ERROR;
  239                 bp->b_error = EIO;
  240                 bp->b_resid = bp->b_bcount;
  241 
  242                 if (mc->mc_status == MLX_STATUS_RDWROFFLINE)
  243                         printf("%s: drive offline\n",
  244                             sc->sc_ld.sc_dv.dv_xname);
  245                 else
  246                         printf("%s: I/O error - %s\n",
  247                             sc->sc_ld.sc_dv.dv_xname,
  248                             mlx_ccb_diagnose(mc));
  249         } else
  250                 bp->b_resid = 0;
  251 
  252         mlx_ccb_unmap(mlx, mc);
  253         mlx_ccb_free(mlx, mc);
  254         lddone(&sc->sc_ld, bp);
  255 }
  256 
  257 static int
  258 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
  259 {
  260 
  261         return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data,
  262             blkcnt * ld->sc_secsize, blkno, 1, NULL));
  263 }

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

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