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: releng/8.4/sys/dev/mfi/mfi_pci.c 235625 2012-05-18 19:48:33Z sbruno $");
   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 TUNABLE_INT("hw.mfi.msi", &mfi_msi);
  112 SYSCTL_INT(_hw_mfi, OID_AUTO, msi, CTLFLAG_RDTUN, &mfi_msi, 0,
  113     "Enable use of MSI interrupts");
  114 
  115 struct mfi_ident {
  116         uint16_t        vendor;
  117         uint16_t        device;
  118         uint16_t        subvendor;
  119         uint16_t        subdevice;
  120         int             flags;
  121         const char      *desc;
  122 } mfi_identifiers[] = {
  123         {0x1000, 0x005b, 0x1028, 0x1f2d, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H810 Adapter"},
  124         {0x1000, 0x005b, 0x1028, 0x1f30, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710 Embedded"},
  125         {0x1000, 0x005b, 0x1028, 0x1f31, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710P Adapter"},
  126         {0x1000, 0x005b, 0x1028, 0x1f33, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710P Mini (blades)"},
  127         {0x1000, 0x005b, 0x1028, 0x1f34, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710P Mini (monolithics)"},
  128         {0x1000, 0x005b, 0x1028, 0x1f35, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710 Adapter"},
  129         {0x1000, 0x005b, 0x1028, 0x1f37, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710 Mini (blades)"},
  130         {0x1000, 0x005b, 0x1028, 0x1f38, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710 Mini (monolithics)"},
  131         {0x1000, 0x005b, 0x8086, 0x9265, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Intel (R) RAID Controller RS25DB080"},
  132         {0x1000, 0x005b, 0x8086, 0x9285, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Intel (R) RAID Controller RS25NB008"},
  133         {0x1000, 0x005b, 0xffff, 0xffff, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "ThunderBolt"},
  134         {0x1000, 0x0060, 0x1028, 0xffff, MFI_FLAGS_1078,  "Dell PERC 6"},
  135         {0x1000, 0x0060, 0xffff, 0xffff, MFI_FLAGS_1078,  "LSI MegaSAS 1078"},
  136         {0x1000, 0x0071, 0xffff, 0xffff, MFI_FLAGS_SKINNY, "Drake Skinny"},
  137         {0x1000, 0x0073, 0xffff, 0xffff, MFI_FLAGS_SKINNY, "Drake Skinny"},
  138         {0x1000, 0x0078, 0xffff, 0xffff, MFI_FLAGS_GEN2,  "LSI MegaSAS Gen2"},
  139         {0x1000, 0x0079, 0x1028, 0x1f15, MFI_FLAGS_GEN2,  "Dell PERC H800 Adapter"},
  140         {0x1000, 0x0079, 0x1028, 0x1f16, MFI_FLAGS_GEN2,  "Dell PERC H700 Adapter"},
  141         {0x1000, 0x0079, 0x1028, 0x1f17, MFI_FLAGS_GEN2,  "Dell PERC H700 Integrated"},
  142         {0x1000, 0x0079, 0x1028, 0x1f18, MFI_FLAGS_GEN2,  "Dell PERC H700 Modular"},
  143         {0x1000, 0x0079, 0x1028, 0x1f19, MFI_FLAGS_GEN2,  "Dell PERC H700"},
  144         {0x1000, 0x0079, 0x1028, 0x1f1a, MFI_FLAGS_GEN2,  "Dell PERC H800 Proto Adapter"},
  145         {0x1000, 0x0079, 0x1028, 0x1f1b, MFI_FLAGS_GEN2,  "Dell PERC H800"},
  146         {0x1000, 0x0079, 0x1028, 0xffff, MFI_FLAGS_GEN2,  "Dell PERC Gen2"},
  147         {0x1000, 0x0079, 0xffff, 0xffff, MFI_FLAGS_GEN2,  "LSI MegaSAS Gen2"},
  148         {0x1000, 0x007c, 0xffff, 0xffff, MFI_FLAGS_1078,  "LSI MegaSAS 1078"},
  149         {0x1000, 0x0411, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Brocton IOP */
  150         {0x1000, 0x0413, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Verde ZCR */
  151         {0x1028, 0x0015, 0xffff, 0xffff, MFI_FLAGS_1064R, "Dell PERC 5/i"},
  152         {0, 0, 0, 0, 0, NULL}
  153 };
  154 
  155 static struct mfi_ident *
  156 mfi_find_ident(device_t dev)
  157 {
  158         struct mfi_ident *m;
  159 
  160         for (m = mfi_identifiers; m->vendor != 0; m++) {
  161                 if ((m->vendor == pci_get_vendor(dev)) &&
  162                     (m->device == pci_get_device(dev)) &&
  163                     ((m->subvendor == pci_get_subvendor(dev)) ||
  164                     (m->subvendor == 0xffff)) &&
  165                     ((m->subdevice == pci_get_subdevice(dev)) ||
  166                     (m->subdevice == 0xffff)))
  167                         return (m);
  168         }
  169 
  170         return (NULL);
  171 }
  172 
  173 static int
  174 mfi_pci_probe(device_t dev)
  175 {
  176         struct mfi_ident *id;
  177 
  178         if ((id = mfi_find_ident(dev)) != NULL) {
  179                 device_set_desc(dev, id->desc);
  180                 return (BUS_PROBE_DEFAULT);
  181         }
  182         return (ENXIO);
  183 }
  184 
  185 static int
  186 mfi_pci_attach(device_t dev)
  187 {
  188         struct mfi_softc *sc;
  189         struct mfi_ident *m;
  190         uint32_t command;
  191         int count, error;
  192 
  193         sc = device_get_softc(dev);
  194         bzero(sc, sizeof(*sc));
  195         sc->mfi_dev = dev;
  196         m = mfi_find_ident(dev);
  197         sc->mfi_flags = m->flags;
  198 
  199         /* Verify that the adapter can be set up in PCI space */
  200         command = pci_read_config(dev, PCIR_COMMAND, 2);
  201         command |= PCIM_CMD_BUSMASTEREN;
  202         pci_write_config(dev, PCIR_COMMAND, command, 2);
  203         command = pci_read_config(dev, PCIR_COMMAND, 2);
  204         if ((command & PCIM_CMD_BUSMASTEREN) == 0) {
  205                 device_printf(dev, "Can't enable PCI busmaster\n");
  206                 return (ENXIO);
  207         }
  208         if ((command & PCIM_CMD_MEMEN) == 0) {
  209                 device_printf(dev, "PCI memory window not available\n");
  210                 return (ENXIO);
  211         }
  212 
  213         /* Allocate PCI registers */
  214         if ((sc->mfi_flags & MFI_FLAGS_1064R) ||
  215             (sc->mfi_flags & MFI_FLAGS_1078)) {
  216                 /* 1068/1078: Memory mapped BAR is at offset 0x10 */
  217                 sc->mfi_regs_rid = PCIR_BAR(0);
  218         }
  219         else if ((sc->mfi_flags & MFI_FLAGS_GEN2) ||
  220                  (sc->mfi_flags & MFI_FLAGS_SKINNY) ||
  221                 (sc->mfi_flags & MFI_FLAGS_TBOLT)) { 
  222                 /* Gen2/Skinny: Memory mapped BAR is at offset 0x14 */
  223                 sc->mfi_regs_rid = PCIR_BAR(1);
  224         }
  225         if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev,
  226             SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) {
  227                 device_printf(dev, "Cannot allocate PCI registers\n");
  228                 return (ENXIO);
  229         }
  230         sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource);
  231         sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource);
  232 
  233         error = ENOMEM;
  234 
  235         /* Allocate parent DMA tag */
  236         if (bus_dma_tag_create( bus_get_dma_tag(dev),   /* PCI parent */
  237                                 1, 0,                   /* algnmnt, boundary */
  238                                 BUS_SPACE_MAXADDR,      /* lowaddr */
  239                                 BUS_SPACE_MAXADDR,      /* highaddr */
  240                                 NULL, NULL,             /* filter, filterarg */
  241                                 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
  242                                 BUS_SPACE_UNRESTRICTED, /* nsegments */
  243                                 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
  244                                 0,                      /* flags */
  245                                 NULL, NULL,             /* lockfunc, lockarg */
  246                                 &sc->mfi_parent_dmat)) {
  247                 device_printf(dev, "Cannot allocate parent DMA tag\n");
  248                 goto out;
  249         }
  250 
  251         /* Allocate IRQ resource. */
  252         sc->mfi_irq_rid = 0;
  253         count = 1;
  254         if (mfi_msi && pci_alloc_msi(sc->mfi_dev, &count) == 0) {
  255                 device_printf(sc->mfi_dev, "Using MSI\n");
  256                 sc->mfi_irq_rid = 1;
  257         }
  258         if ((sc->mfi_irq = bus_alloc_resource_any(sc->mfi_dev, SYS_RES_IRQ,
  259             &sc->mfi_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
  260                 device_printf(sc->mfi_dev, "Cannot allocate interrupt\n");
  261                 error = EINVAL;
  262                 goto out;
  263         }
  264 
  265         error = mfi_attach(sc);
  266 out:
  267         if (error) {
  268                 mfi_free(sc);
  269                 mfi_pci_free(sc);
  270         }
  271 
  272         return (error);
  273 }
  274 
  275 static int
  276 mfi_pci_detach(device_t dev)
  277 {
  278         struct mfi_softc *sc;
  279         int error, devcount, i;
  280         device_t *devlist;
  281 
  282         sc = device_get_softc(dev);
  283 
  284         sx_xlock(&sc->mfi_config_lock);
  285         mtx_lock(&sc->mfi_io_lock);
  286         if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) {
  287                 mtx_unlock(&sc->mfi_io_lock);
  288                 sx_xunlock(&sc->mfi_config_lock);
  289                 return (EBUSY);
  290         }
  291         sc->mfi_detaching = 1;
  292         mtx_unlock(&sc->mfi_io_lock);
  293 
  294         if ((error = device_get_children(sc->mfi_dev, &devlist, &devcount)) != 0) {
  295                 sx_xunlock(&sc->mfi_config_lock);
  296                 return error;
  297         }
  298         for (i = 0; i < devcount; i++)
  299                 device_delete_child(sc->mfi_dev, devlist[i]);
  300         free(devlist, M_TEMP);
  301         sx_xunlock(&sc->mfi_config_lock);
  302 
  303         EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh);
  304 
  305         mfi_shutdown(sc);
  306         mfi_free(sc);
  307         mfi_pci_free(sc);
  308         return (0);
  309 }
  310 
  311 static void
  312 mfi_pci_free(struct mfi_softc *sc)
  313 {
  314 
  315         if (sc->mfi_regs_resource != NULL) {
  316                 bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY,
  317                     sc->mfi_regs_rid, sc->mfi_regs_resource);
  318         }
  319         if (sc->mfi_irq_rid != 0)
  320                 pci_release_msi(sc->mfi_dev);
  321 
  322         return;
  323 }
  324 
  325 static int
  326 mfi_pci_suspend(device_t dev)
  327 {
  328 
  329         return (EINVAL);
  330 }
  331 
  332 static int
  333 mfi_pci_resume(device_t dev)
  334 {
  335 
  336         return (EINVAL);
  337 }

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