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  * Copyright (c) 2002 Adaptec Inc.
    3  * All rights reserved.
    4  *
    5  * Written by: David Jeffery
    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/10.1/sys/dev/ips/ips_pci.c 254263 2013-08-12 23:30:01Z scottl $");
   31 
   32 #include <dev/ips/ipsreg.h>
   33 #include <dev/ips/ips.h>
   34 
   35 #include <dev/pci/pcireg.h>
   36 #include <dev/pci/pcivar.h>
   37 
   38 static int ips_pci_free(ips_softc_t *sc);
   39 static void ips_intrhook(void *arg);
   40 
   41 static int ips_pci_probe(device_t dev)
   42 {
   43 
   44         if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   45             (pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID)) {
   46                 device_set_desc(dev, "IBM ServeRAID Adapter");
   47                 return (BUS_PROBE_DEFAULT);
   48         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   49             (pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)) {
   50                 device_set_desc(dev, "IBM ServeRAID Adapter");
   51                 return (BUS_PROBE_DEFAULT);
   52         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID_ADAPTEC) &&
   53             (pci_get_device(dev) == IPS_MARCO_DEVICE_ID)) {
   54                 device_set_desc(dev, "Adaptec ServeRAID Adapter");
   55                 return (BUS_PROBE_DEFAULT);
   56         }
   57         return(ENXIO);
   58 }
   59 
   60 static int ips_pci_attach(device_t dev)
   61 {
   62         ips_softc_t *sc;
   63 
   64 
   65         if (resource_disabled(device_get_name(dev), device_get_unit(dev))) {
   66                 device_printf(dev, "device is disabled\n");
   67                 /* but return 0 so the !$)$)*!$*) unit isn't reused */
   68                 return (0);
   69         }
   70         DEVICE_PRINTF(1, dev, "in attach.\n");
   71         sc = (ips_softc_t *)device_get_softc(dev);
   72         if(!sc){
   73                 printf("how is sc NULL?!\n");
   74                 return (ENXIO);
   75         }
   76         bzero(sc, sizeof(ips_softc_t));
   77         sc->dev = dev;
   78 
   79         if(pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID){
   80                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   81                 sc->ips_adapter_intr = ips_morpheus_intr;
   82                 sc->ips_issue_cmd    = ips_issue_morpheus_cmd;
   83                 sc->ips_poll_cmd     = ips_morpheus_poll;
   84         } else if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID){
   85                 sc->ips_adapter_reinit = ips_copperhead_reinit;
   86                 sc->ips_adapter_intr = ips_copperhead_intr;
   87                 sc->ips_issue_cmd    = ips_issue_copperhead_cmd;
   88                 sc->ips_poll_cmd     = ips_copperhead_poll;
   89         } else if (pci_get_device(dev) == IPS_MARCO_DEVICE_ID){
   90                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   91                 sc->ips_adapter_intr = ips_morpheus_intr;
   92                 sc->ips_issue_cmd = ips_issue_morpheus_cmd;
   93                 sc->ips_poll_cmd     = ips_morpheus_poll;
   94         } else
   95                 goto error;
   96         /* make sure busmastering is on */
   97         pci_enable_busmaster(dev);
   98         /* seting up io space */
   99         sc->iores = NULL;
  100         PRINTF(10, "trying MEMIO\n");
  101         if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)
  102                 sc->rid = PCIR_BAR(1);
  103         else
  104                 sc->rid = PCIR_BAR(0);
  105         sc->iotype = SYS_RES_MEMORY;
  106         sc->iores = bus_alloc_resource_any(dev, sc->iotype, &sc->rid,
  107             RF_ACTIVE);
  108         if(!sc->iores){
  109                 PRINTF(10, "trying PORTIO\n");
  110                 sc->rid = PCIR_BAR(0);
  111                 sc->iotype = SYS_RES_IOPORT;
  112                 sc->iores = bus_alloc_resource_any(dev, sc->iotype, 
  113                         &sc->rid, RF_ACTIVE);
  114         }
  115         if(sc->iores == NULL){
  116                 device_printf(dev, "resource allocation failed\n");
  117                 return (ENXIO);
  118         }
  119         sc->bustag = rman_get_bustag(sc->iores);
  120         sc->bushandle = rman_get_bushandle(sc->iores);
  121         /*allocate an interrupt. when does the irq become active? after leaving attach? */
  122         sc->irqrid = 0;
  123         if(!(sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  124                 &sc->irqrid, RF_SHAREABLE | RF_ACTIVE))){
  125                 device_printf(dev, "irq allocation failed\n");
  126                 goto error;
  127         }
  128         if(bus_setup_intr(dev, sc->irqres, INTR_TYPE_BIO|INTR_MPSAFE, NULL, 
  129             sc->ips_adapter_intr, sc, &sc->irqcookie)){
  130                 device_printf(dev, "irq setup failed\n");
  131                 goto error;
  132         }
  133         if (bus_dma_tag_create( /* PCI parent */bus_get_dma_tag(dev),
  134                                 /* alignemnt */ 1,
  135                                 /* boundary  */ 0,
  136                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
  137                                 /* highaddr  */ BUS_SPACE_MAXADDR,
  138                                 /* filter    */ NULL,
  139                                 /* filterarg */ NULL,
  140                                 /* maxsize   */ BUS_SPACE_MAXSIZE_32BIT,
  141                                 /* numsegs   */ IPS_MAX_SG_ELEMENTS,
  142                                 /* maxsegsize*/ BUS_SPACE_MAXSIZE_32BIT,
  143                                 /* flags     */ 0,
  144                                 /* lockfunc  */ NULL,
  145                                 /* lockarg   */ NULL,
  146                                 &sc->adapter_dmatag) != 0) {
  147                 printf("IPS can't alloc dma tag\n");
  148                 goto error;
  149         }
  150         sc->ips_ich.ich_func = ips_intrhook;
  151         sc->ips_ich.ich_arg = sc;
  152         mtx_init(&sc->queue_mtx, "IPS bioqueue lock", NULL, MTX_DEF);
  153         sema_init(&sc->cmd_sema, 0, "IPS Command Semaphore");
  154         bioq_init(&sc->queue);
  155         if (config_intrhook_establish(&sc->ips_ich) != 0) {
  156                 printf("IPS can't establish configuration hook\n");
  157                 goto error;
  158         }
  159         return 0;
  160 error:
  161         ips_pci_free(sc);
  162         return (ENXIO);
  163 }
  164 
  165 static void
  166 ips_intrhook(void *arg)
  167 {
  168         struct ips_softc *sc = (struct ips_softc *)arg;
  169 
  170         config_intrhook_disestablish(&sc->ips_ich);
  171         if (ips_adapter_init(sc))
  172                 ips_pci_free(sc);
  173         else
  174                 sc->configured = 1;
  175 }
  176 
  177 static int ips_pci_free(ips_softc_t *sc)
  178 {
  179         if(sc->adapter_dmatag)
  180                 bus_dma_tag_destroy(sc->adapter_dmatag);
  181         if(sc->irqcookie)
  182                 bus_teardown_intr(sc->dev, sc->irqres, sc->irqcookie);
  183         if(sc->irqres)
  184                bus_release_resource(sc->dev, SYS_RES_IRQ, sc->irqrid, sc->irqres);
  185         if(sc->iores)
  186                 bus_release_resource(sc->dev, sc->iotype, sc->rid, sc->iores);
  187         sc->configured = 0;
  188         mtx_destroy(&sc->queue_mtx);
  189         sema_destroy(&sc->cmd_sema);
  190         return 0;
  191 }
  192 
  193 static int ips_pci_detach(device_t dev)
  194 {
  195         ips_softc_t *sc;
  196         DEVICE_PRINTF(1, dev, "detaching ServeRaid\n");
  197         sc = (ips_softc_t *) device_get_softc(dev);
  198         if (sc->configured) {
  199                 sc->configured = 0;
  200                 ips_flush_cache(sc);
  201                 if(ips_adapter_free(sc))
  202                         return EBUSY;
  203                 ips_pci_free(sc);
  204                 bioq_flush(&sc->queue, NULL, ENXIO);
  205         }
  206         return 0;
  207 }
  208 
  209 static int ips_pci_shutdown(device_t dev)
  210 {
  211         ips_softc_t *sc = (ips_softc_t *) device_get_softc(dev);
  212         if (sc->configured) {
  213                 ips_flush_cache(sc);
  214         }
  215         return 0;
  216 }
  217 
  218 static device_method_t ips_driver_methods[] = {
  219         DEVMETHOD(device_probe, ips_pci_probe),
  220         DEVMETHOD(device_attach, ips_pci_attach),
  221         DEVMETHOD(device_detach, ips_pci_detach),
  222         DEVMETHOD(device_shutdown, ips_pci_shutdown),
  223         {0,0}
  224 };
  225 
  226 static driver_t ips_pci_driver = {
  227         "ips",
  228         ips_driver_methods,
  229         sizeof(ips_softc_t),
  230 };
  231 
  232 static devclass_t ips_devclass;
  233 DRIVER_MODULE(ips, pci, ips_pci_driver, ips_devclass, 0, 0);

Cache object: 46918cf0f828ed22a87f514a2ed1932e


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