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_pci.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  * Copyright (c) 2007 LSI Corp.
   28  * Copyright (c) 2007 Rajesh Prabhakaran.
   29  * All rights reserved.
   30  *
   31  * Redistribution and use in source and binary forms, with or without
   32  * modification, are permitted provided that the following conditions
   33  * are met:
   34  * 1. Redistributions of source code must retain the above copyright
   35  *    notice, this list of conditions and the following disclaimer.
   36  * 2. Redistributions in binary form must reproduce the above copyright
   37  *    notice, this list of conditions and the following disclaimer in the
   38  *    documentation and/or other materials provided with the distribution.
   39  *
   40  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   50  * SUCH DAMAGE.
   51  */
   52 
   53 #include <sys/cdefs.h>
   54 __FBSDID("$FreeBSD: stable/11/sys/dev/mfi/mfi_pci.c 331722 2018-03-29 02:50:57Z eadler $");
   55 
   56 /* PCI/PCI-X/PCIe bus interface for the LSI MegaSAS controllers */
   57 
   58 #include "opt_mfi.h"
   59 
   60 #include <sys/param.h>
   61 #include <sys/systm.h>
   62 #include <sys/kernel.h>
   63 #include <sys/selinfo.h>
   64 #include <sys/module.h>
   65 #include <sys/bus.h>
   66 #include <sys/conf.h>
   67 #include <sys/bio.h>
   68 #include <sys/malloc.h>
   69 #include <sys/sysctl.h>
   70 #include <sys/uio.h>
   71 
   72 #include <machine/bus.h>
   73 #include <machine/resource.h>
   74 #include <sys/rman.h>
   75 
   76 #include <dev/pci/pcireg.h>
   77 #include <dev/pci/pcivar.h>
   78 
   79 #include <dev/mfi/mfireg.h>
   80 #include <dev/mfi/mfi_ioctl.h>
   81 #include <dev/mfi/mfivar.h>
   82 
   83 static int      mfi_pci_probe(device_t);
   84 static int      mfi_pci_attach(device_t);
   85 static int      mfi_pci_detach(device_t);
   86 static int      mfi_pci_suspend(device_t);
   87 static int      mfi_pci_resume(device_t);
   88 static void     mfi_pci_free(struct mfi_softc *);
   89 
   90 static device_method_t mfi_methods[] = {
   91         DEVMETHOD(device_probe,         mfi_pci_probe),
   92         DEVMETHOD(device_attach,        mfi_pci_attach),
   93         DEVMETHOD(device_detach,        mfi_pci_detach),
   94         DEVMETHOD(device_suspend,       mfi_pci_suspend),
   95         DEVMETHOD(device_resume,        mfi_pci_resume),
   96 
   97         DEVMETHOD_END
   98 };
   99 
  100 static driver_t mfi_pci_driver = {
  101         "mfi",
  102         mfi_methods,
  103         sizeof(struct mfi_softc)
  104 };
  105 
  106 static devclass_t       mfi_devclass;
  107 DRIVER_MODULE(mfi, pci, mfi_pci_driver, mfi_devclass, 0, 0);
  108 MODULE_VERSION(mfi, 1);
  109 
  110 static int      mfi_msi = 1;
  111 SYSCTL_INT(_hw_mfi, OID_AUTO, msi, CTLFLAG_RDTUN, &mfi_msi, 0,
  112     "Enable use of MSI interrupts");
  113 
  114 static int      mfi_mrsas_enable;
  115 SYSCTL_INT(_hw_mfi, OID_AUTO, mrsas_enable, CTLFLAG_RDTUN, &mfi_mrsas_enable,
  116      0, "Allow mrasas to take newer cards");
  117 
  118 struct mfi_ident {
  119         uint16_t        vendor;
  120         uint16_t        device;
  121         uint16_t        subvendor;
  122         uint16_t        subdevice;
  123         int             flags;
  124         const char      *desc;
  125 } mfi_identifiers[] = {
  126         {0x1000, 0x005b, 0x1028, 0x1f2d, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Dell PERC H810 Adapter"},
  127         {0x1000, 0x005b, 0x1028, 0x1f30, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Dell PERC H710 Embedded"},
  128         {0x1000, 0x005b, 0x1028, 0x1f31, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Dell PERC H710P Adapter"},
  129         {0x1000, 0x005b, 0x1028, 0x1f33, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Dell PERC H710P Mini (blades)"},
  130         {0x1000, 0x005b, 0x1028, 0x1f34, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Dell PERC H710P Mini (monolithics)"},
  131         {0x1000, 0x005b, 0x1028, 0x1f35, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Dell PERC H710 Adapter"},
  132         {0x1000, 0x005b, 0x1028, 0x1f37, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Dell PERC H710 Mini (blades)"},
  133         {0x1000, 0x005b, 0x1028, 0x1f38, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Dell PERC H710 Mini (monolithics)"},
  134         {0x1000, 0x005b, 0x8086, 0x9265, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Intel (R) RAID Controller RS25DB080"},
  135         {0x1000, 0x005b, 0x8086, 0x9285, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "Intel (R) RAID Controller RS25NB008"},
  136         {0x1000, 0x005b, 0xffff, 0xffff, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS, "ThunderBolt"},
  137         {0x1000, 0x005d, 0xffff, 0xffff, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS| MFI_FLAGS_INVADER, "Invader"},
  138         {0x1000, 0x005f, 0xffff, 0xffff, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT| MFI_FLAGS_MRSAS| MFI_FLAGS_FURY, "Fury"},
  139         {0x1000, 0x0060, 0x1028, 0xffff, MFI_FLAGS_1078,  "Dell PERC 6"},
  140         {0x1000, 0x0060, 0xffff, 0xffff, MFI_FLAGS_1078,  "LSI MegaSAS 1078"},
  141         {0x1000, 0x0071, 0xffff, 0xffff, MFI_FLAGS_SKINNY, "Drake Skinny"},
  142         {0x1000, 0x0073, 0xffff, 0xffff, MFI_FLAGS_SKINNY, "Drake Skinny"},
  143         {0x1000, 0x0078, 0xffff, 0xffff, MFI_FLAGS_GEN2,  "LSI MegaSAS Gen2"},
  144         {0x1000, 0x0079, 0x1028, 0x1f15, MFI_FLAGS_GEN2,  "Dell PERC H800 Adapter"},
  145         {0x1000, 0x0079, 0x1028, 0x1f16, MFI_FLAGS_GEN2,  "Dell PERC H700 Adapter"},
  146         {0x1000, 0x0079, 0x1028, 0x1f17, MFI_FLAGS_GEN2,  "Dell PERC H700 Integrated"},
  147         {0x1000, 0x0079, 0x1028, 0x1f18, MFI_FLAGS_GEN2,  "Dell PERC H700 Modular"},
  148         {0x1000, 0x0079, 0x1028, 0x1f19, MFI_FLAGS_GEN2,  "Dell PERC H700"},
  149         {0x1000, 0x0079, 0x1028, 0x1f1a, MFI_FLAGS_GEN2,  "Dell PERC H800 Proto Adapter"},
  150         {0x1000, 0x0079, 0x1028, 0x1f1b, MFI_FLAGS_GEN2,  "Dell PERC H800"},
  151         {0x1000, 0x0079, 0x1028, 0xffff, MFI_FLAGS_GEN2,  "Dell PERC Gen2"},
  152         {0x1000, 0x0079, 0xffff, 0xffff, MFI_FLAGS_GEN2,  "LSI MegaSAS Gen2"},
  153         {0x1000, 0x007c, 0xffff, 0xffff, MFI_FLAGS_1078,  "LSI MegaSAS 1078"},
  154         {0x1000, 0x0411, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Brocton IOP */
  155         {0x1000, 0x0413, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Verde ZCR */
  156         {0x1028, 0x0015, 0xffff, 0xffff, MFI_FLAGS_1064R, "Dell PERC 5/i"},
  157         {0, 0, 0, 0, 0, NULL}
  158 };
  159 
  160 static struct mfi_ident *
  161 mfi_find_ident(device_t dev)
  162 {
  163         struct mfi_ident *m;
  164 
  165         for (m = mfi_identifiers; m->vendor != 0; m++) {
  166                 if ((m->vendor == pci_get_vendor(dev)) &&
  167                     (m->device == pci_get_device(dev)) &&
  168                     ((m->subvendor == pci_get_subvendor(dev)) ||
  169                     (m->subvendor == 0xffff)) &&
  170                     ((m->subdevice == pci_get_subdevice(dev)) ||
  171                     (m->subdevice == 0xffff)))
  172                         return (m);
  173         }
  174 
  175         return (NULL);
  176 }
  177 
  178 static int
  179 mfi_pci_probe(device_t dev)
  180 {
  181         struct mfi_ident *id;
  182 
  183         if ((id = mfi_find_ident(dev)) != NULL) {
  184                 device_set_desc(dev, id->desc);
  185 
  186                 /* give priority to mrsas if tunable set */
  187                 if ((id->flags & MFI_FLAGS_MRSAS) && mfi_mrsas_enable)
  188                         return (BUS_PROBE_LOW_PRIORITY);
  189                 else
  190                         return (BUS_PROBE_DEFAULT);
  191         }
  192         return (ENXIO);
  193 }
  194 
  195 static int
  196 mfi_pci_attach(device_t dev)
  197 {
  198         struct mfi_softc *sc;
  199         struct mfi_ident *m;
  200         int count, error;
  201 
  202         sc = device_get_softc(dev);
  203         bzero(sc, sizeof(*sc));
  204         sc->mfi_dev = dev;
  205         m = mfi_find_ident(dev);
  206         sc->mfi_flags = m->flags;
  207 
  208         /* Ensure busmastering is enabled */
  209         pci_enable_busmaster(dev);
  210 
  211         /* Allocate PCI registers */
  212         if ((sc->mfi_flags & MFI_FLAGS_1064R) ||
  213             (sc->mfi_flags & MFI_FLAGS_1078)) {
  214                 /* 1068/1078: Memory mapped BAR is at offset 0x10 */
  215                 sc->mfi_regs_rid = PCIR_BAR(0);
  216         }
  217         else if ((sc->mfi_flags & MFI_FLAGS_GEN2) ||
  218                  (sc->mfi_flags & MFI_FLAGS_SKINNY) ||
  219                 (sc->mfi_flags & MFI_FLAGS_TBOLT)) { 
  220                 /* Gen2/Skinny: Memory mapped BAR is at offset 0x14 */
  221                 sc->mfi_regs_rid = PCIR_BAR(1);
  222         }
  223         if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev,
  224             SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) {
  225                 device_printf(dev, "Cannot allocate PCI registers\n");
  226                 return (ENXIO);
  227         }
  228         sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource);
  229         sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource);
  230 
  231         error = ENOMEM;
  232 
  233         /* Allocate parent DMA tag */
  234         if (bus_dma_tag_create( bus_get_dma_tag(dev),   /* PCI parent */
  235                                 1, 0,                   /* algnmnt, boundary */
  236                                 BUS_SPACE_MAXADDR,      /* lowaddr */
  237                                 BUS_SPACE_MAXADDR,      /* highaddr */
  238                                 NULL, NULL,             /* filter, filterarg */
  239                                 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
  240                                 BUS_SPACE_UNRESTRICTED, /* nsegments */
  241                                 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
  242                                 0,                      /* flags */
  243                                 NULL, NULL,             /* lockfunc, lockarg */
  244                                 &sc->mfi_parent_dmat)) {
  245                 device_printf(dev, "Cannot allocate parent DMA tag\n");
  246                 goto out;
  247         }
  248 
  249         /* Allocate IRQ resource. */
  250         sc->mfi_irq_rid = 0;
  251         count = 1;
  252         if (mfi_msi && pci_alloc_msi(sc->mfi_dev, &count) == 0) {
  253                 device_printf(sc->mfi_dev, "Using MSI\n");
  254                 sc->mfi_irq_rid = 1;
  255         }
  256         if ((sc->mfi_irq = bus_alloc_resource_any(sc->mfi_dev, SYS_RES_IRQ,
  257             &sc->mfi_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
  258                 device_printf(sc->mfi_dev, "Cannot allocate interrupt\n");
  259                 error = EINVAL;
  260                 goto out;
  261         }
  262 
  263         error = mfi_attach(sc);
  264 out:
  265         if (error) {
  266                 mfi_free(sc);
  267                 mfi_pci_free(sc);
  268         }
  269 
  270         return (error);
  271 }
  272 
  273 static int
  274 mfi_pci_detach(device_t dev)
  275 {
  276         struct mfi_softc *sc;
  277         int error, devcount, i;
  278         device_t *devlist;
  279 
  280         sc = device_get_softc(dev);
  281 
  282         sx_xlock(&sc->mfi_config_lock);
  283         mtx_lock(&sc->mfi_io_lock);
  284         if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) {
  285                 mtx_unlock(&sc->mfi_io_lock);
  286                 sx_xunlock(&sc->mfi_config_lock);
  287                 return (EBUSY);
  288         }
  289         sc->mfi_detaching = 1;
  290         mtx_unlock(&sc->mfi_io_lock);
  291 
  292         if ((error = device_get_children(sc->mfi_dev, &devlist, &devcount)) != 0) {
  293                 sx_xunlock(&sc->mfi_config_lock);
  294                 return error;
  295         }
  296         for (i = 0; i < devcount; i++)
  297                 device_delete_child(sc->mfi_dev, devlist[i]);
  298         free(devlist, M_TEMP);
  299         sx_xunlock(&sc->mfi_config_lock);
  300 
  301         EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh);
  302 
  303         mfi_shutdown(sc);
  304         mfi_free(sc);
  305         mfi_pci_free(sc);
  306         return (0);
  307 }
  308 
  309 static void
  310 mfi_pci_free(struct mfi_softc *sc)
  311 {
  312 
  313         if (sc->mfi_regs_resource != NULL) {
  314                 bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY,
  315                     sc->mfi_regs_rid, sc->mfi_regs_resource);
  316         }
  317         if (sc->mfi_irq_rid != 0)
  318                 pci_release_msi(sc->mfi_dev);
  319 
  320         return;
  321 }
  322 
  323 static int
  324 mfi_pci_suspend(device_t dev)
  325 {
  326 
  327         return (EINVAL);
  328 }
  329 
  330 static int
  331 mfi_pci_resume(device_t dev)
  332 {
  333 
  334         return (EINVAL);
  335 }

Cache object: 6c9c7ec3d04222ebe7fca276d295d565


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