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/5.2/sys/dev/ips/ips_pci.c 119997 2003-09-11 23:30:28Z ps $");
   31 
   32 #include <dev/ips/ips.h>
   33 
   34 static int ips_pci_free(ips_softc_t *sc);
   35 static void ips_intrhook(void *arg);
   36 
   37 static int ips_pci_probe(device_t dev)
   38 {
   39 
   40         if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   41             (pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID)) {
   42                 device_set_desc(dev, "IBM ServeRAID Adapter");
   43                 return 0;
   44         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   45             (pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)) {
   46                 device_set_desc(dev, "IBM ServeRAID Adapter");
   47                 return (0);
   48         }
   49         return(ENXIO);
   50 }
   51 
   52 static int ips_pci_attach(device_t dev)
   53 {
   54         u_int32_t command;
   55         ips_softc_t *sc;
   56 
   57 
   58         if (resource_disabled(device_get_name(dev), device_get_unit(dev))) {
   59                 device_printf(dev, "device is disabled\n");
   60                 /* but return 0 so the !$)$)*!$*) unit isn't reused */
   61                 return (0);
   62         }
   63         DEVICE_PRINTF(1, dev, "in attach.\n");
   64         sc = (ips_softc_t *)device_get_softc(dev);
   65         if(!sc){
   66                 printf("how is sc NULL?!\n");
   67                 return (ENXIO);
   68         }
   69         bzero(sc, sizeof(ips_softc_t));
   70         sc->dev = dev;
   71 
   72         if(pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID){
   73                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   74                 sc->ips_adapter_intr = ips_morpheus_intr;
   75                 sc->ips_issue_cmd    = ips_issue_morpheus_cmd;
   76         } else if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID){
   77                 sc->ips_adapter_reinit = ips_copperhead_reinit;
   78                 sc->ips_adapter_intr = ips_copperhead_intr;
   79                 sc->ips_issue_cmd    = ips_issue_copperhead_cmd;
   80         } else
   81                 goto error;
   82         /* make sure busmastering is on */
   83         command = pci_read_config(dev, PCIR_COMMAND, 1);
   84         command |= PCIM_CMD_BUSMASTEREN;
   85         pci_write_config(dev, PCIR_COMMAND, command, 1);
   86         /* seting up io space */
   87         sc->iores = NULL;
   88         if(command & PCIM_CMD_MEMEN){
   89                 PRINTF(10, "trying MEMIO\n");
   90                 if(pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID)
   91                         sc->rid = PCIR_BAR(0);
   92                 else
   93                         sc->rid = PCIR_BAR(1);
   94                 sc->iotype = SYS_RES_MEMORY;
   95                 sc->iores = bus_alloc_resource(dev, sc->iotype, &sc->rid, 0, ~0, 1, RF_ACTIVE);
   96         }
   97         if(!sc->iores && command & PCIM_CMD_PORTEN){
   98                 PRINTF(10, "trying PORTIO\n");
   99                 sc->rid = PCIR_BAR(0);
  100                 sc->iotype = SYS_RES_IOPORT;
  101                 sc->iores = bus_alloc_resource(dev, sc->iotype, &sc->rid, 0, ~0, 1, RF_ACTIVE);
  102         }
  103         if(sc->iores == NULL){
  104                 device_printf(dev, "resource allocation failed\n");
  105                 return (ENXIO);
  106         }
  107         sc->bustag = rman_get_bustag(sc->iores);
  108         sc->bushandle = rman_get_bushandle(sc->iores);
  109         /*allocate an interrupt. when does the irq become active? after leaving attach? */
  110         sc->irqrid = 0;
  111         if(!(sc->irqres = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irqrid, 0, ~0, 1, RF_SHAREABLE | RF_ACTIVE))){
  112                 device_printf(dev, "irq allocation failed\n");
  113                 goto error;
  114         }
  115         if(bus_setup_intr(dev, sc->irqres, INTR_TYPE_BIO, sc->ips_adapter_intr, sc, &sc->irqcookie)){
  116                 device_printf(dev, "irq setup failed\n");
  117                 goto error;
  118         }
  119         if (bus_dma_tag_create( /* parent    */ NULL,
  120                                 /* alignemnt */ 1,
  121                                 /* boundary  */ 0,
  122                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
  123                                 /* highaddr  */ BUS_SPACE_MAXADDR,
  124                                 /* filter    */ NULL,
  125                                 /* filterarg */ NULL,
  126                                 /* maxsize   */ BUS_SPACE_MAXSIZE_32BIT,
  127                                 /* numsegs   */ IPS_MAX_SG_ELEMENTS,
  128                                 /* maxsegsize*/ BUS_SPACE_MAXSIZE_32BIT,
  129                                 /* flags     */ 0,
  130                                 /* lockfunc  */ busdma_lock_mutex,
  131                                 /* lockarg   */ &Giant,
  132                                 &sc->adapter_dmatag) != 0) {
  133                 printf("IPS can't alloc dma tag\n");
  134                 goto error;
  135         }
  136         sc->ips_ich.ich_func = ips_intrhook;
  137         sc->ips_ich.ich_arg = sc;
  138         if (config_intrhook_establish(&sc->ips_ich) != 0) {
  139                 printf("IPS can't establish configuration hook\n");
  140                 goto error;
  141         }
  142         return 0;
  143 error:
  144         ips_pci_free(sc);
  145         return (ENXIO);
  146 }
  147 
  148 static void
  149 ips_intrhook(void *arg)
  150 {
  151         struct ips_softc *sc = (struct ips_softc *)arg;
  152 
  153         config_intrhook_disestablish(&sc->ips_ich);
  154         if (ips_adapter_init(sc))
  155                 ips_pci_free(sc);
  156         else
  157                 sc->configured = 1;
  158 }
  159 
  160 static int ips_pci_free(ips_softc_t *sc)
  161 {
  162         if(sc->adapter_dmatag)
  163                 bus_dma_tag_destroy(sc->adapter_dmatag);
  164         if(sc->irqcookie)
  165                 bus_teardown_intr(sc->dev, sc->irqres, sc->irqcookie);
  166         if(sc->irqres)
  167                bus_release_resource(sc->dev, SYS_RES_IRQ, sc->irqrid, sc->irqres);
  168         if(sc->iores)
  169                 bus_release_resource(sc->dev, sc->iotype, sc->rid, sc->iores);
  170         sc->configured = 0;
  171         return 0;
  172 }
  173 
  174 static int ips_pci_detach(device_t dev)
  175 {
  176         ips_softc_t *sc;
  177         DEVICE_PRINTF(1, dev, "detaching ServeRaid\n");
  178         sc = (ips_softc_t *) device_get_softc(dev);
  179         if (sc->configured) {
  180                 sc->configured = 0;
  181                 ips_flush_cache(sc);
  182                 if(ips_adapter_free(sc))
  183                         return EBUSY;
  184                 ips_pci_free(sc);
  185                 mtx_destroy(&sc->cmd_mtx);
  186         }
  187         return 0;
  188 }
  189 
  190 static int ips_pci_shutdown(device_t dev)
  191 {
  192         ips_softc_t *sc = (ips_softc_t *) device_get_softc(dev);
  193         if (sc->configured) {
  194                 ips_flush_cache(sc);
  195         }
  196         return 0;
  197 }
  198 
  199 static device_method_t ips_driver_methods[] = {
  200         DEVMETHOD(device_probe, ips_pci_probe),
  201         DEVMETHOD(device_attach, ips_pci_attach),
  202         DEVMETHOD(device_detach, ips_pci_detach),
  203         DEVMETHOD(device_shutdown, ips_pci_shutdown),
  204         {0,0}
  205 };
  206 
  207 static driver_t ips_pci_driver = {
  208         "ips",
  209         ips_driver_methods,
  210         sizeof(ips_softc_t),
  211 };
  212 
  213 static devclass_t ips_devclass;
  214 DRIVER_MODULE(ips, pci, ips_pci_driver, ips_devclass, 0, 0);

Cache object: 87b2442654078465479cca8ab974edcc


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