The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2006 IronPort Systems
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: releng/12.0/sys/dev/mfi/mfi_disk.c 326255 2017-11-27 14:52:40Z pfg $");
   31 
   32 #include "opt_mfi.h"
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/kernel.h>
   37 #include <sys/selinfo.h>
   38 #include <sys/module.h>
   39 #include <sys/malloc.h>
   40 #include <sys/sysctl.h>
   41 #include <sys/uio.h>
   42 
   43 #include <sys/bio.h>
   44 #include <sys/bus.h>
   45 #include <sys/conf.h>
   46 #include <sys/disk.h>
   47 #include <geom/geom_disk.h>
   48 
   49 #include <vm/vm.h>
   50 #include <vm/pmap.h>
   51 
   52 #include <machine/md_var.h>
   53 #include <machine/bus.h>
   54 #include <sys/rman.h>
   55 
   56 #include <dev/mfi/mfireg.h>
   57 #include <dev/mfi/mfi_ioctl.h>
   58 #include <dev/mfi/mfivar.h>
   59 
   60 static int      mfi_disk_probe(device_t dev);
   61 static int      mfi_disk_attach(device_t dev);
   62 static int      mfi_disk_detach(device_t dev);
   63 
   64 static disk_open_t      mfi_disk_open;
   65 static disk_close_t     mfi_disk_close;
   66 static disk_strategy_t  mfi_disk_strategy;
   67 static dumper_t         mfi_disk_dump;
   68 
   69 static devclass_t       mfi_disk_devclass;
   70 
   71 static device_method_t mfi_disk_methods[] = {
   72         DEVMETHOD(device_probe,         mfi_disk_probe),
   73         DEVMETHOD(device_attach,        mfi_disk_attach),
   74         DEVMETHOD(device_detach,        mfi_disk_detach),
   75         { 0, 0 }
   76 };
   77 
   78 static driver_t mfi_disk_driver = {
   79         "mfid",
   80         mfi_disk_methods,
   81         sizeof(struct mfi_disk)
   82 };
   83 
   84 DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0);
   85 
   86 static int
   87 mfi_disk_probe(device_t dev)
   88 {
   89 
   90         return (0);
   91 }
   92 
   93 static int
   94 mfi_disk_attach(device_t dev)
   95 {
   96         struct mfi_disk *sc;
   97         struct mfi_ld_info *ld_info;
   98         struct mfi_disk_pending *ld_pend;
   99         uint64_t sectors;
  100         uint32_t secsize;
  101         char *state;
  102 
  103         sc = device_get_softc(dev);
  104         ld_info = device_get_ivars(dev);
  105 
  106         sc->ld_dev = dev;
  107         sc->ld_id = ld_info->ld_config.properties.ld.v.target_id;
  108         sc->ld_unit = device_get_unit(dev);
  109         sc->ld_info = ld_info;
  110         sc->ld_controller = device_get_softc(device_get_parent(dev));
  111         sc->ld_flags = 0;
  112 
  113         sectors = ld_info->size;
  114         secsize = MFI_SECTOR_LEN;
  115         mtx_lock(&sc->ld_controller->mfi_io_lock);
  116         TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
  117         TAILQ_FOREACH(ld_pend, &sc->ld_controller->mfi_ld_pend_tqh,
  118             ld_link) {
  119                 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_pend_tqh,
  120                     ld_pend, ld_link);
  121                 free(ld_pend, M_MFIBUF);
  122                 break;
  123         }
  124         mtx_unlock(&sc->ld_controller->mfi_io_lock);
  125 
  126         switch (ld_info->ld_config.params.state) {
  127         case MFI_LD_STATE_OFFLINE:
  128                 state = "offline";
  129                 break;
  130         case MFI_LD_STATE_PARTIALLY_DEGRADED:
  131                 state = "partially degraded";
  132                 break;
  133         case MFI_LD_STATE_DEGRADED:
  134                 state = "degraded";
  135                 break;
  136         case MFI_LD_STATE_OPTIMAL:
  137                 state = "optimal";
  138                 break;
  139         default:
  140                 state = "unknown";
  141                 break;
  142         }
  143 
  144         if ( strlen(ld_info->ld_config.properties.name) == 0 ) {
  145                 device_printf(dev,
  146                       "%juMB (%ju sectors) RAID volume (no label) is %s\n",
  147                        sectors / (1024 * 1024 / secsize), sectors, state);
  148         } else {
  149                 device_printf(dev,
  150                       "%juMB (%ju sectors) RAID volume '%s' is %s\n",
  151                       sectors / (1024 * 1024 / secsize), sectors,
  152                       ld_info->ld_config.properties.name, state);
  153         }
  154 
  155         sc->ld_disk = disk_alloc();
  156         sc->ld_disk->d_drv1 = sc;
  157         sc->ld_disk->d_maxsize = min(sc->ld_controller->mfi_max_io * secsize,
  158             (sc->ld_controller->mfi_max_sge - 1) * PAGE_SIZE);
  159         sc->ld_disk->d_name = "mfid";
  160         sc->ld_disk->d_open = mfi_disk_open;
  161         sc->ld_disk->d_close = mfi_disk_close;
  162         sc->ld_disk->d_strategy = mfi_disk_strategy;
  163         sc->ld_disk->d_dump = mfi_disk_dump;
  164         sc->ld_disk->d_unit = sc->ld_unit;
  165         sc->ld_disk->d_sectorsize = secsize;
  166         sc->ld_disk->d_mediasize = sectors * secsize;
  167         if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) {
  168                 sc->ld_disk->d_fwheads = 255;
  169                 sc->ld_disk->d_fwsectors = 63;
  170         } else {
  171                 sc->ld_disk->d_fwheads = 64;
  172                 sc->ld_disk->d_fwsectors = 32;
  173         }
  174         sc->ld_disk->d_flags = DISKFLAG_UNMAPPED_BIO;
  175         disk_create(sc->ld_disk, DISK_VERSION);
  176 
  177         return (0);
  178 }
  179 
  180 static int
  181 mfi_disk_detach(device_t dev)
  182 {
  183         struct mfi_disk *sc;
  184 
  185         sc = device_get_softc(dev);
  186 
  187         mtx_lock(&sc->ld_controller->mfi_io_lock);
  188         if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) ||
  189             (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) &&
  190             (sc->ld_controller->mfi_keep_deleted_volumes ||
  191             sc->ld_controller->mfi_detaching)) {
  192                 mtx_unlock(&sc->ld_controller->mfi_io_lock);
  193                 return (EBUSY);
  194         }
  195         mtx_unlock(&sc->ld_controller->mfi_io_lock);
  196 
  197         disk_destroy(sc->ld_disk);
  198         mtx_lock(&sc->ld_controller->mfi_io_lock);
  199         TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
  200         mtx_unlock(&sc->ld_controller->mfi_io_lock);
  201         free(sc->ld_info, M_MFIBUF);
  202         return (0);
  203 }
  204 
  205 static int
  206 mfi_disk_open(struct disk *dp)
  207 {
  208         struct mfi_disk *sc;
  209         int error;
  210 
  211         sc = dp->d_drv1;
  212         mtx_lock(&sc->ld_controller->mfi_io_lock);
  213         if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED)
  214                 error = ENXIO;
  215         else {
  216                 sc->ld_flags |= MFI_DISK_FLAGS_OPEN;
  217                 error = 0;
  218         }
  219         mtx_unlock(&sc->ld_controller->mfi_io_lock);
  220 
  221         return (error);
  222 }
  223 
  224 static int
  225 mfi_disk_close(struct disk *dp)
  226 {
  227         struct mfi_disk *sc;
  228 
  229         sc = dp->d_drv1;
  230         mtx_lock(&sc->ld_controller->mfi_io_lock);
  231         sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN;
  232         mtx_unlock(&sc->ld_controller->mfi_io_lock);
  233 
  234         return (0);
  235 }
  236 
  237 int
  238 mfi_disk_disable(struct mfi_disk *sc)
  239 {
  240 
  241         mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED);
  242         if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) {
  243                 if (sc->ld_controller->mfi_delete_busy_volumes)
  244                         return (0);
  245                 device_printf(sc->ld_dev, "Unable to delete busy ld device\n");
  246                 return (EBUSY);
  247         }
  248         sc->ld_flags |= MFI_DISK_FLAGS_DISABLED;
  249         return (0);
  250 }
  251 
  252 void
  253 mfi_disk_enable(struct mfi_disk *sc)
  254 {
  255 
  256         mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED);
  257         sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED;
  258 }
  259 
  260 static void
  261 mfi_disk_strategy(struct bio *bio)
  262 {
  263         struct mfi_disk *sc;
  264         struct mfi_softc *controller;
  265 
  266         sc = bio->bio_disk->d_drv1;
  267 
  268         if (sc == NULL) {
  269                 bio->bio_error = EINVAL;
  270                 bio->bio_flags |= BIO_ERROR;
  271                 bio->bio_resid = bio->bio_bcount;
  272                 biodone(bio);
  273                 return;
  274         }
  275 
  276         controller = sc->ld_controller;
  277         if (controller->adpreset) {
  278                 bio->bio_error = EBUSY;
  279                 return;
  280         }
  281 
  282         if (controller->hw_crit_error) {
  283                 bio->bio_error = EBUSY;
  284                 return;
  285         }
  286 
  287         if (controller->issuepend_done == 0) {
  288                 bio->bio_error = EBUSY;
  289                 return;
  290         }
  291 
  292         bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id;
  293         /* Mark it as LD IO */
  294         bio->bio_driver2 = (void *)MFI_LD_IO;
  295         mtx_lock(&controller->mfi_io_lock);
  296         mfi_enqueue_bio(controller, bio);
  297         mfi_startio(controller);
  298         mtx_unlock(&controller->mfi_io_lock);
  299         return;
  300 }
  301 
  302 void
  303 mfi_disk_complete(struct bio *bio)
  304 {
  305         struct mfi_disk *sc;
  306         struct mfi_frame_header *hdr;
  307 
  308         sc = bio->bio_disk->d_drv1;
  309         hdr = bio->bio_driver1;
  310 
  311         if (bio->bio_flags & BIO_ERROR) {
  312                 bio->bio_resid = bio->bio_bcount;
  313                 if (bio->bio_error == 0)
  314                         bio->bio_error = EIO;
  315                 disk_err(bio, "hard error", -1, 1);
  316         } else {
  317                 bio->bio_resid = 0;
  318         }
  319         biodone(bio);
  320 }
  321 
  322 static int
  323 mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len)
  324 {
  325         struct mfi_disk *sc;
  326         struct mfi_softc *parent_sc;
  327         struct disk *dp;
  328         int error;
  329 
  330         dp = arg;
  331         sc = dp->d_drv1;
  332         parent_sc = sc->ld_controller;
  333 
  334         if (len > 0) {
  335                 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset /
  336                     MFI_SECTOR_LEN, virt, len)) != 0)
  337                         return (error);
  338         } else {
  339                 /* mfi_sync_cache(parent_sc, sc->ld_id); */
  340         }
  341 
  342         return (0);
  343 }

Cache object: 1e03e8bed60498d7a4d55516640c2c08


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