mfi_disk.c

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    1 /*-
    2  * Copyright (c) 2006 IronPort Systems
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/6.2/sys/dev/mfi/mfi_disk.c 163554 2006-10-21 05:28:50Z scottl $");
   29 
   30 #include "opt_mfi.h"
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/kernel.h>
   35 #include <sys/selinfo.h>
   36 #include <sys/module.h>
   37 #include <sys/malloc.h>
   38 #include <sys/uio.h>
   39 
   40 #include <sys/bio.h>
   41 #include <sys/bus.h>
   42 #include <sys/conf.h>
   43 #include <sys/disk.h>
   44 #include <geom/geom_disk.h>
   45 
   46 #include <vm/vm.h>
   47 #include <vm/pmap.h>
   48 
   49 #include <machine/md_var.h>
   50 #include <machine/bus.h>
   51 #include <sys/rman.h>
   52 
   53 #include <dev/mfi/mfireg.h>
   54 #include <dev/mfi/mfi_ioctl.h>
   55 #include <dev/mfi/mfivar.h>
   56 
   57 static int      mfi_disk_probe(device_t dev);
   58 static int      mfi_disk_attach(device_t dev);
   59 static int      mfi_disk_detach(device_t dev);
   60 
   61 static disk_open_t      mfi_disk_open;
   62 static disk_close_t     mfi_disk_close;
   63 static disk_strategy_t  mfi_disk_strategy;
   64 static dumper_t         mfi_disk_dump;
   65 
   66 static devclass_t       mfi_disk_devclass;
   67 
   68 struct mfi_disk {
   69         device_t        ld_dev;
   70         int             ld_id;
   71         int             ld_unit;
   72         struct mfi_softc *ld_controller;
   73         struct mfi_ld   *ld_ld;
   74         struct disk     *ld_disk;
   75 };
   76 
   77 static device_method_t mfi_disk_methods[] = {
   78         DEVMETHOD(device_probe,         mfi_disk_probe),
   79         DEVMETHOD(device_attach,        mfi_disk_attach),
   80         DEVMETHOD(device_detach,        mfi_disk_detach),
   81         { 0, 0 }
   82 };
   83 
   84 static driver_t mfi_disk_driver = {
   85         "mfid",
   86         mfi_disk_methods,
   87         sizeof(struct mfi_disk)
   88 };
   89 
   90 DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0);
   91 
   92 static int
   93 mfi_disk_probe(device_t dev)
   94 {
   95 
   96         return (0);
   97 }
   98 
   99 static int
  100 mfi_disk_attach(device_t dev)
  101 {
  102         struct mfi_disk *sc;
  103         struct mfi_ld *ld;
  104         uint64_t sectors;
  105         uint32_t secsize;
  106         char *state;
  107 
  108         sc = device_get_softc(dev);
  109         ld = device_get_ivars(dev);
  110 
  111         sc->ld_dev = dev;
  112         sc->ld_id = ld->ld_id;
  113         sc->ld_unit = device_get_unit(dev);
  114         sc->ld_ld = device_get_ivars(dev);
  115         sc->ld_controller = device_get_softc(device_get_parent(dev));
  116 
  117         sectors = ld->ld_info->size;
  118         secsize = MFI_SECTOR_LEN;
  119         TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, ld, ld_link);
  120 
  121         switch (ld->ld_info->ld_config.params.state) {
  122         case MFI_LD_STATE_OFFLINE:
  123                 state = "offline";
  124                 break;
  125         case MFI_LD_STATE_PARTIALLY_DEGRADED:
  126                 state = "partially degraded";
  127                 break;
  128         case MFI_LD_STATE_DEGRADED:
  129                 state = "degraded";
  130                 break;
  131         case MFI_LD_STATE_OPTIMAL:
  132                 state = "optimal";
  133                 break;
  134         default:
  135                 state = "unknown";
  136                 break;
  137         }
  138         device_printf(dev, "%juMB (%ju sectors) RAID volume '%s' is %s\n",
  139                       sectors / (1024 * 1024 / secsize), sectors,
  140                       ld->ld_info->ld_config.properties.name,
  141                       state);
  142 
  143         sc->ld_disk = disk_alloc();
  144         sc->ld_disk->d_drv1 = sc;
  145         sc->ld_disk->d_maxsize = sc->ld_controller->mfi_max_io * secsize;
  146         sc->ld_disk->d_name = "mfid";
  147         sc->ld_disk->d_open = mfi_disk_open;
  148         sc->ld_disk->d_close = mfi_disk_close;
  149         sc->ld_disk->d_strategy = mfi_disk_strategy;
  150         sc->ld_disk->d_dump = mfi_disk_dump;
  151         sc->ld_disk->d_unit = sc->ld_unit;
  152         sc->ld_disk->d_sectorsize = secsize;
  153         sc->ld_disk->d_mediasize = sectors * secsize;
  154         if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) {
  155                 sc->ld_disk->d_fwheads = 255;
  156                 sc->ld_disk->d_fwsectors = 63;
  157         } else {
  158                 sc->ld_disk->d_fwheads = 64;
  159                 sc->ld_disk->d_fwsectors = 32;
  160         }
  161         disk_create(sc->ld_disk, DISK_VERSION);
  162 
  163         return (0);
  164 }
  165 
  166 static int
  167 mfi_disk_detach(device_t dev)
  168 {
  169         struct mfi_disk *sc;
  170 
  171         sc = device_get_softc(dev);
  172 
  173         if (sc->ld_disk->d_flags & DISKFLAG_OPEN)
  174                 return (EBUSY);
  175 
  176         disk_destroy(sc->ld_disk);
  177         return (0);
  178 }
  179 
  180 static int
  181 mfi_disk_open(struct disk *dp)
  182 {
  183 
  184         return (0);
  185 }
  186 
  187 static int
  188 mfi_disk_close(struct disk *dp)
  189 {
  190 
  191         return (0);
  192 }
  193 
  194 static void
  195 mfi_disk_strategy(struct bio *bio)
  196 {
  197         struct mfi_disk *sc;
  198         struct mfi_softc *controller;
  199 
  200         sc = bio->bio_disk->d_drv1;
  201 
  202         if (sc == NULL) {
  203                 bio->bio_error = EINVAL;
  204                 bio->bio_flags |= BIO_ERROR;
  205                 bio->bio_resid = bio->bio_bcount;
  206                 biodone(bio);
  207                 return;
  208         }
  209 
  210         controller = sc->ld_controller;
  211         bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id;
  212         mtx_lock(&controller->mfi_io_lock);
  213         mfi_enqueue_bio(controller, bio);
  214         mfi_startio(controller);
  215         mtx_unlock(&controller->mfi_io_lock);
  216         return;
  217 }
  218 
  219 void
  220 mfi_disk_complete(struct bio *bio)
  221 {
  222         struct mfi_disk *sc;
  223         struct mfi_frame_header *hdr;
  224 
  225         sc = bio->bio_disk->d_drv1;
  226         hdr = bio->bio_driver1;
  227 
  228         if (bio->bio_flags & BIO_ERROR) {
  229                 if (bio->bio_error == 0)
  230                         bio->bio_error = EIO;
  231                 disk_err(bio, "hard error", -1, 1);
  232         } else {
  233                 bio->bio_resid = 0;
  234         }
  235         biodone(bio);
  236 }
  237 
  238 static int
  239 mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len)
  240 {
  241         struct mfi_disk *sc;
  242         struct mfi_softc *parent_sc;
  243         struct disk *dp;
  244         int error;
  245 
  246         dp = arg;
  247         sc = dp->d_drv1;
  248         parent_sc = sc->ld_controller;
  249 
  250         if (len > 0) {
  251                 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset /
  252                     MFI_SECTOR_LEN, virt, len)) != 0)
  253                         return (error);
  254         } else {
  255                 /* mfi_sync_cache(parent_sc, sc->ld_id); */
  256         }
  257 
  258         return (0);
  259 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/mfi/mfi_disk.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mfi/mfi_disk.c