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/ips/ips_pci.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2002 Adaptec Inc.
    5  * All rights reserved.
    6  *
    7  * Written by: David Jeffery
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: head/sys/dev/ips/ips_pci.c 326255 2017-11-27 14:52:40Z pfg $");
   33 
   34 #include <dev/ips/ipsreg.h>
   35 #include <dev/ips/ips.h>
   36 
   37 #include <dev/pci/pcireg.h>
   38 #include <dev/pci/pcivar.h>
   39 
   40 static int ips_pci_free(ips_softc_t *sc);
   41 static void ips_intrhook(void *arg);
   42 
   43 static int ips_pci_probe(device_t dev)
   44 {
   45 
   46         if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   47             (pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID)) {
   48                 device_set_desc(dev, "IBM ServeRAID Adapter");
   49                 return (BUS_PROBE_DEFAULT);
   50         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   51             (pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)) {
   52                 device_set_desc(dev, "IBM ServeRAID Adapter");
   53                 return (BUS_PROBE_DEFAULT);
   54         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID_ADAPTEC) &&
   55             (pci_get_device(dev) == IPS_MARCO_DEVICE_ID)) {
   56                 device_set_desc(dev, "Adaptec ServeRAID Adapter");
   57                 return (BUS_PROBE_DEFAULT);
   58         }
   59         return(ENXIO);
   60 }
   61 
   62 static int ips_pci_attach(device_t dev)
   63 {
   64         ips_softc_t *sc;
   65 
   66         DEVICE_PRINTF(1, dev, "in attach.\n");
   67         sc = (ips_softc_t *)device_get_softc(dev);
   68         sc->dev = dev;
   69         mtx_init(&sc->queue_mtx, "IPS bioqueue lock", NULL, MTX_DEF);
   70         sema_init(&sc->cmd_sema, 0, "IPS Command Semaphore");
   71         callout_init_mtx(&sc->timer, &sc->queue_mtx, 0);
   72 
   73         if(pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID){
   74                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   75                 sc->ips_adapter_intr = ips_morpheus_intr;
   76                 sc->ips_issue_cmd    = ips_issue_morpheus_cmd;
   77                 sc->ips_poll_cmd     = ips_morpheus_poll;
   78         } else if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID){
   79                 sc->ips_adapter_reinit = ips_copperhead_reinit;
   80                 sc->ips_adapter_intr = ips_copperhead_intr;
   81                 sc->ips_issue_cmd    = ips_issue_copperhead_cmd;
   82                 sc->ips_poll_cmd     = ips_copperhead_poll;
   83         } else if (pci_get_device(dev) == IPS_MARCO_DEVICE_ID){
   84                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   85                 sc->ips_adapter_intr = ips_morpheus_intr;
   86                 sc->ips_issue_cmd = ips_issue_morpheus_cmd;
   87                 sc->ips_poll_cmd     = ips_morpheus_poll;
   88         } else
   89                 goto error;
   90         /* make sure busmastering is on */
   91         pci_enable_busmaster(dev);
   92         /* setting up io space */
   93         sc->iores = NULL;
   94         PRINTF(10, "trying MEMIO\n");
   95         if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)
   96                 sc->rid = PCIR_BAR(1);
   97         else
   98                 sc->rid = PCIR_BAR(0);
   99         sc->iotype = SYS_RES_MEMORY;
  100         sc->iores = bus_alloc_resource_any(dev, sc->iotype, &sc->rid,
  101             RF_ACTIVE);
  102         if(!sc->iores){
  103                 PRINTF(10, "trying PORTIO\n");
  104                 sc->rid = PCIR_BAR(0);
  105                 sc->iotype = SYS_RES_IOPORT;
  106                 sc->iores = bus_alloc_resource_any(dev, sc->iotype, 
  107                         &sc->rid, RF_ACTIVE);
  108         }
  109         if(sc->iores == NULL){
  110                 device_printf(dev, "resource allocation failed\n");
  111                 return (ENXIO);
  112         }
  113         /*allocate an interrupt. when does the irq become active? after leaving attach? */
  114         sc->irqrid = 0;
  115         if(!(sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  116                 &sc->irqrid, RF_SHAREABLE | RF_ACTIVE))){
  117                 device_printf(dev, "irq allocation failed\n");
  118                 goto error;
  119         }
  120         if(bus_setup_intr(dev, sc->irqres, INTR_TYPE_BIO|INTR_MPSAFE, NULL, 
  121             sc->ips_adapter_intr, sc, &sc->irqcookie)){
  122                 device_printf(dev, "irq setup failed\n");
  123                 goto error;
  124         }
  125         if (bus_dma_tag_create( /* PCI parent */bus_get_dma_tag(dev),
  126                                 /* alignemnt */ 1,
  127                                 /* boundary  */ 0,
  128                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
  129                                 /* highaddr  */ BUS_SPACE_MAXADDR,
  130                                 /* filter    */ NULL,
  131                                 /* filterarg */ NULL,
  132                                 /* maxsize   */ BUS_SPACE_MAXSIZE_32BIT,
  133                                 /* numsegs   */ IPS_MAX_SG_ELEMENTS,
  134                                 /* maxsegsize*/ BUS_SPACE_MAXSIZE_32BIT,
  135                                 /* flags     */ 0,
  136                                 /* lockfunc  */ NULL,
  137                                 /* lockarg   */ NULL,
  138                                 &sc->adapter_dmatag) != 0) {
  139                 device_printf(dev, "can't alloc dma tag\n");
  140                 goto error;
  141         }
  142         sc->ips_ich.ich_func = ips_intrhook;
  143         sc->ips_ich.ich_arg = sc;
  144         bioq_init(&sc->queue);
  145         if (config_intrhook_establish(&sc->ips_ich) != 0) {
  146                 printf("IPS can't establish configuration hook\n");
  147                 goto error;
  148         }
  149         return 0;
  150 error:
  151         ips_pci_free(sc);
  152         return (ENXIO);
  153 }
  154 
  155 static void
  156 ips_intrhook(void *arg)
  157 {
  158         struct ips_softc *sc = (struct ips_softc *)arg;
  159 
  160         config_intrhook_disestablish(&sc->ips_ich);
  161         if (ips_adapter_init(sc))
  162                 ips_pci_free(sc);
  163         else
  164                 sc->configured = 1;
  165 }
  166 
  167 static int ips_pci_free(ips_softc_t *sc)
  168 {
  169         if(sc->adapter_dmatag)
  170                 bus_dma_tag_destroy(sc->adapter_dmatag);
  171         if(sc->irqcookie)
  172                 bus_teardown_intr(sc->dev, sc->irqres, sc->irqcookie);
  173         if(sc->irqres)
  174                bus_release_resource(sc->dev, SYS_RES_IRQ, sc->irqrid, sc->irqres);
  175         if(sc->iores)
  176                 bus_release_resource(sc->dev, sc->iotype, sc->rid, sc->iores);
  177         sc->configured = 0;
  178         mtx_destroy(&sc->queue_mtx);
  179         sema_destroy(&sc->cmd_sema);
  180         return 0;
  181 }
  182 
  183 static int ips_pci_detach(device_t dev)
  184 {
  185         ips_softc_t *sc;
  186         DEVICE_PRINTF(1, dev, "detaching ServeRaid\n");
  187         sc = (ips_softc_t *) device_get_softc(dev);
  188         if (sc->configured) {
  189                 sc->configured = 0;
  190                 ips_flush_cache(sc);
  191                 if(ips_adapter_free(sc))
  192                         return EBUSY;
  193                 ips_pci_free(sc);
  194                 bioq_flush(&sc->queue, NULL, ENXIO);
  195         }
  196         return 0;
  197 }
  198 
  199 static int ips_pci_shutdown(device_t dev)
  200 {
  201         ips_softc_t *sc = (ips_softc_t *) device_get_softc(dev);
  202         if (sc->configured) {
  203                 ips_flush_cache(sc);
  204         }
  205         return 0;
  206 }
  207 
  208 static device_method_t ips_driver_methods[] = {
  209         DEVMETHOD(device_probe, ips_pci_probe),
  210         DEVMETHOD(device_attach, ips_pci_attach),
  211         DEVMETHOD(device_detach, ips_pci_detach),
  212         DEVMETHOD(device_shutdown, ips_pci_shutdown),
  213         {0,0}
  214 };
  215 
  216 static driver_t ips_pci_driver = {
  217         "ips",
  218         ips_driver_methods,
  219         sizeof(ips_softc_t),
  220 };
  221 
  222 static devclass_t ips_devclass;
  223 DRIVER_MODULE(ips, pci, ips_pci_driver, ips_devclass, 0, 0);

Cache object: b29ab24ea522eeb0f3a105141813bc31


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