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/5.3/sys/dev/ips/ips_pci.c 127205 2004-03-19 17:36:47Z scottl $");
   31 
   32 #include <dev/ips/ips.h>
   33 
   34 static int ips_pci_free(ips_softc_t *sc);
   35 static void ips_intrhook(void *arg);
   36 
   37 static int ips_pci_probe(device_t dev)
   38 {
   39 
   40         if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   41             (pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID)) {
   42                 device_set_desc(dev, "IBM ServeRAID Adapter");
   43                 return 0;
   44         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   45             (pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)) {
   46                 device_set_desc(dev, "IBM ServeRAID Adapter");
   47                 return (0);
   48         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID_ADAPTEC) &&
   49             (pci_get_device(dev) == IPS_MARCO_DEVICE_ID)) {
   50                 device_set_desc(dev, "Adaptec ServeRAID Adapter");
   51                 return (0);
   52         }
   53         return(ENXIO);
   54 }
   55 
   56 static int ips_pci_attach(device_t dev)
   57 {
   58         u_int32_t command;
   59         ips_softc_t *sc;
   60 
   61 
   62         if (resource_disabled(device_get_name(dev), device_get_unit(dev))) {
   63                 device_printf(dev, "device is disabled\n");
   64                 /* but return 0 so the !$)$)*!$*) unit isn't reused */
   65                 return (0);
   66         }
   67         DEVICE_PRINTF(1, dev, "in attach.\n");
   68         sc = (ips_softc_t *)device_get_softc(dev);
   69         if(!sc){
   70                 printf("how is sc NULL?!\n");
   71                 return (ENXIO);
   72         }
   73         bzero(sc, sizeof(ips_softc_t));
   74         sc->dev = dev;
   75 
   76         if(pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID){
   77                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   78                 sc->ips_adapter_intr = ips_morpheus_intr;
   79                 sc->ips_issue_cmd    = ips_issue_morpheus_cmd;
   80         } else if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID){
   81                 sc->ips_adapter_reinit = ips_copperhead_reinit;
   82                 sc->ips_adapter_intr = ips_copperhead_intr;
   83                 sc->ips_issue_cmd    = ips_issue_copperhead_cmd;
   84         } else if (pci_get_device(dev) == IPS_MARCO_DEVICE_ID){
   85                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   86                 sc->ips_adapter_intr = ips_morpheus_intr;
   87                 sc->ips_issue_cmd = ips_issue_morpheus_cmd;
   88         } else
   89                 goto error;
   90         /* make sure busmastering is on */
   91         command = pci_read_config(dev, PCIR_COMMAND, 1);
   92         command |= PCIM_CMD_BUSMASTEREN;
   93         pci_write_config(dev, PCIR_COMMAND, command, 1);
   94         /* seting up io space */
   95         sc->iores = NULL;
   96         if(command & PCIM_CMD_MEMEN){
   97                 PRINTF(10, "trying MEMIO\n");
   98                 if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)
   99                         sc->rid = PCIR_BAR(1);
  100                 else
  101                         sc->rid = PCIR_BAR(0);
  102                 sc->iotype = SYS_RES_MEMORY;
  103                 sc->iores = bus_alloc_resource_any(dev, sc->iotype,
  104                         &sc->rid, RF_ACTIVE);
  105         }
  106         if(!sc->iores && command & PCIM_CMD_PORTEN){
  107                 PRINTF(10, "trying PORTIO\n");
  108                 sc->rid = PCIR_BAR(0);
  109                 sc->iotype = SYS_RES_IOPORT;
  110                 sc->iores = bus_alloc_resource_any(dev, sc->iotype, 
  111                         &sc->rid, RF_ACTIVE);
  112         }
  113         if(sc->iores == NULL){
  114                 device_printf(dev, "resource allocation failed\n");
  115                 return (ENXIO);
  116         }
  117         sc->bustag = rman_get_bustag(sc->iores);
  118         sc->bushandle = rman_get_bushandle(sc->iores);
  119         /*allocate an interrupt. when does the irq become active? after leaving attach? */
  120         sc->irqrid = 0;
  121         if(!(sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  122                 &sc->irqrid, RF_SHAREABLE | RF_ACTIVE))){
  123                 device_printf(dev, "irq allocation failed\n");
  124                 goto error;
  125         }
  126         if(bus_setup_intr(dev, sc->irqres, INTR_TYPE_BIO, sc->ips_adapter_intr, sc, &sc->irqcookie)){
  127                 device_printf(dev, "irq setup failed\n");
  128                 goto error;
  129         }
  130         if (bus_dma_tag_create( /* parent    */ NULL,
  131                                 /* alignemnt */ 1,
  132                                 /* boundary  */ 0,
  133                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
  134                                 /* highaddr  */ BUS_SPACE_MAXADDR,
  135                                 /* filter    */ NULL,
  136                                 /* filterarg */ NULL,
  137                                 /* maxsize   */ BUS_SPACE_MAXSIZE_32BIT,
  138                                 /* numsegs   */ IPS_MAX_SG_ELEMENTS,
  139                                 /* maxsegsize*/ BUS_SPACE_MAXSIZE_32BIT,
  140                                 /* flags     */ 0,
  141                                 /* lockfunc  */ busdma_lock_mutex,
  142                                 /* lockarg   */ &Giant,
  143                                 &sc->adapter_dmatag) != 0) {
  144                 printf("IPS can't alloc dma tag\n");
  145                 goto error;
  146         }
  147         sc->ips_ich.ich_func = ips_intrhook;
  148         sc->ips_ich.ich_arg = sc;
  149         mtx_init(&sc->queue_mtx, "IPS bioqueue lock", MTX_DEF, 0);
  150         bioq_init(&sc->queue);
  151         if (config_intrhook_establish(&sc->ips_ich) != 0) {
  152                 printf("IPS can't establish configuration hook\n");
  153                 goto error;
  154         }
  155         return 0;
  156 error:
  157         ips_pci_free(sc);
  158         return (ENXIO);
  159 }
  160 
  161 static void
  162 ips_intrhook(void *arg)
  163 {
  164         struct ips_softc *sc = (struct ips_softc *)arg;
  165 
  166         config_intrhook_disestablish(&sc->ips_ich);
  167         if (ips_adapter_init(sc))
  168                 ips_pci_free(sc);
  169         else
  170                 sc->configured = 1;
  171 }
  172 
  173 static int ips_pci_free(ips_softc_t *sc)
  174 {
  175         if(sc->adapter_dmatag)
  176                 bus_dma_tag_destroy(sc->adapter_dmatag);
  177         if(sc->irqcookie)
  178                 bus_teardown_intr(sc->dev, sc->irqres, sc->irqcookie);
  179         if(sc->irqres)
  180                bus_release_resource(sc->dev, SYS_RES_IRQ, sc->irqrid, sc->irqres);
  181         if(sc->iores)
  182                 bus_release_resource(sc->dev, sc->iotype, sc->rid, sc->iores);
  183         sc->configured = 0;
  184         return 0;
  185 }
  186 
  187 static int ips_pci_detach(device_t dev)
  188 {
  189         ips_softc_t *sc;
  190         DEVICE_PRINTF(1, dev, "detaching ServeRaid\n");
  191         sc = (ips_softc_t *) device_get_softc(dev);
  192         if (sc->configured) {
  193                 sc->configured = 0;
  194                 ips_flush_cache(sc);
  195                 if(ips_adapter_free(sc))
  196                         return EBUSY;
  197                 ips_pci_free(sc);
  198                 bioq_flush(&sc->queue, NULL, ENXIO);
  199         }
  200         return 0;
  201 }
  202 
  203 static int ips_pci_shutdown(device_t dev)
  204 {
  205         ips_softc_t *sc = (ips_softc_t *) device_get_softc(dev);
  206         if (sc->configured) {
  207                 ips_flush_cache(sc);
  208         }
  209         return 0;
  210 }
  211 
  212 static device_method_t ips_driver_methods[] = {
  213         DEVMETHOD(device_probe, ips_pci_probe),
  214         DEVMETHOD(device_attach, ips_pci_attach),
  215         DEVMETHOD(device_detach, ips_pci_detach),
  216         DEVMETHOD(device_shutdown, ips_pci_shutdown),
  217         {0,0}
  218 };
  219 
  220 static driver_t ips_pci_driver = {
  221         "ips",
  222         ips_driver_methods,
  223         sizeof(ips_softc_t),
  224 };
  225 
  226 static devclass_t ips_devclass;
  227 DRIVER_MODULE(ips, pci, ips_pci_driver, ips_devclass, 0, 0);

Cache object: b1d1f947792a5fdb8e4a3650594462d5


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