ld_mlx.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*      $NetBSD: ld_mlx.c,v 1.23 2016/09/27 03:33:32 pgoyette 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  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 /*
   33  * Mylex DAC960 front-end for ld(4) driver.
   34  */
   35 
   36 #include <sys/cdefs.h>
   37 __KERNEL_RCSID(0, "$NetBSD: ld_mlx.c,v 1.23 2016/09/27 03:33:32 pgoyette Exp $");
   38 
   39 #include <sys/param.h>
   40 #include <sys/systm.h>
   41 #include <sys/kernel.h>
   42 #include <sys/device.h>
   43 #include <sys/buf.h>
   44 #include <sys/bufq.h>
   45 #include <sys/endian.h>
   46 #include <sys/dkio.h>
   47 #include <sys/disk.h>
   48 #include <sys/module.h>
   49 #include <machine/vmparam.h>
   50 #include <sys/bus.h>
   51 
   52 #include <dev/ldvar.h>
   53 
   54 #include <dev/ic/mlxreg.h>
   55 #include <dev/ic/mlxio.h>
   56 #include <dev/ic/mlxvar.h>
   57 
   58 #include "ioconf.h"
   59 
   60 struct ld_mlx_softc {
   61         struct  ld_softc sc_ld;
   62         int     sc_hwunit;
   63 };
   64 
   65 static void     ld_mlx_attach(device_t, device_t, void *);
   66 static int      ld_mlx_detach(device_t, int);
   67 static int      ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int,
   68                              struct buf *);
   69 static int      ld_mlx_dump(struct ld_softc *, void *, int, int);
   70 static void     ld_mlx_handler(struct mlx_ccb *);
   71 static int      ld_mlx_match(device_t, cfdata_t, void *);
   72 static int      ld_mlx_start(struct ld_softc *, struct buf *);
   73 
   74 CFATTACH_DECL_NEW(ld_mlx, sizeof(struct ld_mlx_softc),
   75     ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL);
   76 
   77 static int
   78 ld_mlx_match(device_t parent, cfdata_t match, void *aux)
   79 {
   80 
   81         return (1);
   82 }
   83 
   84 static void
   85 ld_mlx_attach(device_t parent, device_t self, void *aux)
   86 {
   87         struct mlx_attach_args *mlxa = aux;
   88         struct ld_mlx_softc *sc = device_private(self);
   89         struct ld_softc *ld = &sc->sc_ld;
   90         struct mlx_softc *mlx = device_private(parent);
   91         struct mlx_sysdrive *ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit];
   92         const char *statestr;
   93 
   94         ld->sc_dv = self;
   95 
   96         sc->sc_hwunit = mlxa->mlxa_unit;
   97         ld->sc_maxxfer = MLX_MAX_XFER;
   98         ld->sc_secsize = MLX_SECTOR_SIZE;
   99         ld->sc_maxqueuecnt = 1;
  100         ld->sc_start = ld_mlx_start;
  101         ld->sc_dump = ld_mlx_dump;
  102         ld->sc_secperunit = ms->ms_size;
  103 
  104         /*
  105          * Report on current status, and attach to the ld driver proper.
  106          */
  107         switch (ms->ms_state) {
  108         case MLX_SYSD_ONLINE:
  109                 statestr = "online";
  110                 ld->sc_flags = LDF_ENABLED;
  111                 break;
  112 
  113         case MLX_SYSD_CRITICAL:
  114                 statestr = "critical";
  115                 ld->sc_flags = LDF_ENABLED;
  116                 break;
  117 
  118         case MLX_SYSD_OFFLINE:
  119                 statestr = "offline";
  120                 break;
  121 
  122         default:
  123                 statestr = "state unknown";
  124                 break;
  125         }
  126 
  127         if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD)
  128                 aprint_normal(": JBOD, %s\n", statestr);
  129         else
  130                 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr);
  131 
  132         ldattach(ld, BUFQ_DISK_DEFAULT_STRAT);
  133 }
  134 
  135 static int
  136 ld_mlx_detach(device_t dv, int flags)
  137 {
  138         struct ld_mlx_softc *sc = device_private(dv);
  139         struct ld_softc *ld = &sc->sc_ld;
  140         struct mlx_softc *mlx = device_private(device_parent(dv));
  141         int rv;
  142 
  143         if ((rv = ldbegindetach(ld, flags)) != 0)
  144                 return (rv);
  145         ldenddetach(ld);
  146         mlx_flush(mlx, 1);
  147 
  148         return (0);
  149 }
  150 
  151 static int
  152 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno,
  153              int dowrite, struct buf *bp)
  154 {
  155         struct mlx_ccb *mc;
  156         struct mlx_softc *mlx;
  157         int s, rv;
  158         bus_addr_t sgphys;
  159 
  160         mlx = device_private(device_parent(sc->sc_ld.sc_dv));
  161 
  162         if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0)
  163                 return (rv);
  164 
  165         /* Map the data transfer. */
  166         rv = mlx_ccb_map(mlx, mc, data, datasize,
  167             dowrite ? MC_XFER_OUT : MC_XFER_IN);
  168         if (rv != 0) {
  169                 mlx_ccb_free(mlx, mc);
  170                 return (rv);
  171         }
  172 
  173         /* Build the command. */
  174         sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident);
  175         datasize /= MLX_SECTOR_SIZE;
  176 
  177         if (mlx->mlx_ci.ci_iftype <= 2)
  178                 mlx_make_type1(mc,
  179                     dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD,
  180                     datasize & 0xff, blkno, sc->sc_hwunit, sgphys,
  181                     mc->mc_nsgent);
  182         else
  183                 mlx_make_type5(mc,
  184                     dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG,
  185                     datasize & 0xff,
  186                     (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07),
  187                     blkno, sgphys, mc->mc_nsgent);
  188 
  189         if (bp == NULL) {
  190                 s = splbio();
  191                 rv = mlx_ccb_poll(mlx, mc, 10000);
  192                 mlx_ccb_unmap(mlx, mc);
  193                 mlx_ccb_free(mlx, mc);
  194                 splx(s);
  195         } else {
  196                 mc->mc_mx.mx_handler = ld_mlx_handler;
  197                 mc->mc_mx.mx_context = bp;
  198                 mc->mc_mx.mx_dv = sc->sc_ld.sc_dv;
  199                 mlx_ccb_enqueue(mlx, mc);
  200                 rv = 0;
  201         }
  202 
  203         return (rv);
  204 }
  205 
  206 static int
  207 ld_mlx_start(struct ld_softc *ld, struct buf *bp)
  208 {
  209 
  210         return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data,
  211             bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
  212 }
  213 
  214 static void
  215 ld_mlx_handler(struct mlx_ccb *mc)
  216 {
  217         struct buf *bp;
  218         struct mlx_context *mx;
  219         struct ld_mlx_softc *sc;
  220         struct mlx_softc *mlx;
  221 
  222         mx = &mc->mc_mx;
  223         bp = mx->mx_context;
  224         sc = device_private(mx->mx_dv);
  225         mlx = device_private(device_parent(sc->sc_ld.sc_dv));
  226 
  227         if (mc->mc_status != MLX_STATUS_OK) {
  228                 bp->b_error = EIO;
  229                 bp->b_resid = bp->b_bcount;
  230 
  231                 if (mc->mc_status == MLX_STATUS_RDWROFFLINE)
  232                         printf("%s: drive offline\n",
  233                             device_xname(sc->sc_ld.sc_dv));
  234                 else
  235                         printf("%s: I/O error - %s\n",
  236                             device_xname(sc->sc_ld.sc_dv),
  237                             mlx_ccb_diagnose(mc));
  238         } else
  239                 bp->b_resid = 0;
  240 
  241         mlx_ccb_unmap(mlx, mc);
  242         mlx_ccb_free(mlx, mc);
  243         lddone(&sc->sc_ld, bp);
  244 }
  245 
  246 static int
  247 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
  248 {
  249 
  250         return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data,
  251             blkcnt * ld->sc_secsize, blkno, 1, NULL));
  252 }
  253 
  254 MODULE(MODULE_CLASS_DRIVER, ld_mlx, "ld");
  255 
  256 #ifdef _MODULE
  257 /*
  258  * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd"
  259  * XXX it will be defined in the common-code module
  260  */
  261 #undef  CFDRIVER_DECL
  262 #define CFDRIVER_DECL(name, class, attr)
  263 #include "ioconf.c"
  264 #endif   
  265         
  266 static int  
  267 ld_mlx_modcmd(modcmd_t cmd, void *opaque)
  268 {
  269 #ifdef _MODULE
  270         /*
  271          * We ignore the cfdriver_vec[] that ioconf provides, since
  272          * the cfdrivers are attached already.
  273          */
  274         static struct cfdriver * const no_cfdriver_vec[] = { NULL };
  275 #endif
  276         int error = 0;
  277 
  278 #ifdef _MODULE
  279         switch (cmd) {
  280         case MODULE_CMD_INIT:
  281                 error = config_init_component(no_cfdriver_vec,
  282                     cfattach_ioconf_ld_mlx, cfdata_ioconf_ld_mlx);
  283                 break;
  284         case MODULE_CMD_FINI:
  285                 error = config_fini_component(no_cfdriver_vec,
  286                     cfattach_ioconf_ld_mlx, cfdata_ioconf_ld_mlx);
  287                 break;
  288         default:
  289                 error = ENOTTY;
  290                 break;
  291         }
  292 #endif
  293 
  294         return error;
  295 }
Cache object: 2569ff08f0c232aec8ce6bca6649f798
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/dev/ic/ld_mlx.c

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