ld_mlx.c

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    1 /*      $NetBSD: ld_mlx.c,v 1.13 2006/11/16 01:32:51 christos 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 1.13 2006/11/16 01:32:51 christos 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/vmparam.h>
   62 #include <machine/bus.h>
   63 
   64 #include <dev/ldvar.h>
   65 
   66 #include <dev/ic/mlxreg.h>
   67 #include <dev/ic/mlxio.h>
   68 #include <dev/ic/mlxvar.h>
   69 
   70 struct ld_mlx_softc {
   71         struct  ld_softc sc_ld;
   72         int     sc_hwunit;
   73 };
   74 
   75 static void     ld_mlx_attach(struct device *, struct device *, void *);
   76 static int      ld_mlx_detach(struct device *, int);
   77 static int      ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int,
   78                              struct buf *);
   79 static int      ld_mlx_dump(struct ld_softc *, void *, int, int);
   80 static void     ld_mlx_handler(struct mlx_ccb *);
   81 static int      ld_mlx_match(struct device *, struct cfdata *, void *);
   82 static int      ld_mlx_start(struct ld_softc *, struct buf *);
   83 
   84 CFATTACH_DECL(ld_mlx, sizeof(struct ld_mlx_softc),
   85     ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL);
   86 
   87 static int
   88 ld_mlx_match(struct device *parent, struct cfdata *match,
   89     void *aux)
   90 {
   91 
   92         return (1);
   93 }
   94 
   95 static void
   96 ld_mlx_attach(struct device *parent, struct device *self, void *aux)
   97 {
   98         struct mlx_attach_args *mlxa;
   99         struct ld_mlx_softc *sc;
  100         struct ld_softc *ld;
  101         struct mlx_softc *mlx;
  102         struct mlx_sysdrive *ms;
  103         const char *statestr;
  104 
  105         sc = (struct ld_mlx_softc *)self;
  106         ld = &sc->sc_ld;
  107         mlx = (struct mlx_softc *)parent;
  108         mlxa = aux;
  109         ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit];
  110 
  111         sc->sc_hwunit = mlxa->mlxa_unit;
  112         ld->sc_maxxfer = MLX_MAX_XFER;
  113         ld->sc_secsize = MLX_SECTOR_SIZE;
  114         ld->sc_maxqueuecnt = 1;
  115         ld->sc_start = ld_mlx_start;
  116         ld->sc_dump = ld_mlx_dump;
  117         ld->sc_secperunit = ms->ms_size;
  118 
  119         /*
  120          * Report on current status, and attach to the ld driver proper.
  121          */
  122         switch (ms->ms_state) {
  123         case MLX_SYSD_ONLINE:
  124                 statestr = "online";
  125                 ld->sc_flags = LDF_ENABLED;
  126                 break;
  127 
  128         case MLX_SYSD_CRITICAL:
  129                 statestr = "critical";
  130                 ld->sc_flags = LDF_ENABLED;
  131                 break;
  132 
  133         case MLX_SYSD_OFFLINE:
  134                 statestr = "offline";
  135                 break;
  136 
  137         default:
  138                 statestr = "state unknown";
  139                 break;
  140         }
  141 
  142         if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD)
  143                 aprint_normal(": JBOD, %s\n", statestr);
  144         else
  145                 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr);
  146 
  147         ldattach(ld);
  148 }
  149 
  150 static int
  151 ld_mlx_detach(struct device *dv, int flags)
  152 {
  153         int rv;
  154 
  155         if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0)
  156                 return (rv);
  157         ldenddetach((struct ld_softc *)dv);
  158         mlx_flush((struct mlx_softc *)device_parent(dv), 1);
  159 
  160         return (0);
  161 }
  162 
  163 static int
  164 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno,
  165              int dowrite, struct buf *bp)
  166 {
  167         struct mlx_ccb *mc;
  168         struct mlx_softc *mlx;
  169         int s, rv;
  170         bus_addr_t sgphys;
  171 
  172         mlx = (struct mlx_softc *)device_parent(&sc->sc_ld.sc_dv);
  173 
  174         if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0)
  175                 return (rv);
  176 
  177         /* Map the data transfer. */
  178         rv = mlx_ccb_map(mlx, mc, data, datasize,
  179             dowrite ? MC_XFER_OUT : MC_XFER_IN);
  180         if (rv != 0) {
  181                 mlx_ccb_free(mlx, mc);
  182                 return (rv);
  183         }
  184 
  185         /* Build the command. */
  186         sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident);
  187         datasize /= MLX_SECTOR_SIZE;
  188 
  189         if (mlx->mlx_ci.ci_iftype <= 2)
  190                 mlx_make_type1(mc,
  191                     dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD,
  192                     datasize & 0xff, blkno, sc->sc_hwunit, sgphys,
  193                     mc->mc_nsgent);
  194         else
  195                 mlx_make_type5(mc,
  196                     dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG,
  197                     datasize & 0xff,
  198                     (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07),
  199                     blkno, sgphys, mc->mc_nsgent);
  200 
  201         if (bp == NULL) {
  202                 s = splbio();
  203                 rv = mlx_ccb_poll(mlx, mc, 10000);
  204                 mlx_ccb_unmap(mlx, mc);
  205                 mlx_ccb_free(mlx, mc);
  206                 splx(s);
  207         } else {
  208                 mc->mc_mx.mx_handler = ld_mlx_handler;
  209                 mc->mc_mx.mx_context = bp;
  210                 mc->mc_mx.mx_dv = &sc->sc_ld.sc_dv;
  211                 mlx_ccb_enqueue(mlx, mc);
  212                 rv = 0;
  213         }
  214 
  215         return (rv);
  216 }
  217 
  218 static int
  219 ld_mlx_start(struct ld_softc *ld, struct buf *bp)
  220 {
  221 
  222         return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data,
  223             bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
  224 }
  225 
  226 static void
  227 ld_mlx_handler(struct mlx_ccb *mc)
  228 {
  229         struct buf *bp;
  230         struct mlx_context *mx;
  231         struct ld_mlx_softc *sc;
  232         struct mlx_softc *mlx;
  233 
  234         mx = &mc->mc_mx;
  235         bp = mx->mx_context;
  236         sc = (struct ld_mlx_softc *)mx->mx_dv;
  237         mlx = (struct mlx_softc *)device_parent(&sc->sc_ld.sc_dv);
  238 
  239         if (mc->mc_status != MLX_STATUS_OK) {
  240                 bp->b_flags |= B_ERROR;
  241                 bp->b_error = EIO;
  242                 bp->b_resid = bp->b_bcount;
  243 
  244                 if (mc->mc_status == MLX_STATUS_RDWROFFLINE)
  245                         printf("%s: drive offline\n",
  246                             sc->sc_ld.sc_dv.dv_xname);
  247                 else
  248                         printf("%s: I/O error - %s\n",
  249                             sc->sc_ld.sc_dv.dv_xname,
  250                             mlx_ccb_diagnose(mc));
  251         } else
  252                 bp->b_resid = 0;
  253 
  254         mlx_ccb_unmap(mlx, mc);
  255         mlx_ccb_free(mlx, mc);
  256         lddone(&sc->sc_ld, bp);
  257 }
  258 
  259 static int
  260 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
  261 {
  262 
  263         return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data,
  264             blkcnt * ld->sc_secsize, blkno, 1, NULL));
  265 }

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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