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/6.3/sys/dev/ips/ips_pci.c 143160 2005-03-05 18:17:35Z imp $");
   31 
   32 #include <dev/ips/ips.h>
   33 
   34 static int ips_pci_free(ips_softc_t *sc);
   35 static void ips_intrhook(void *arg);
   36 
   37 static int ips_pci_probe(device_t dev)
   38 {
   39 
   40         if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   41             (pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID)) {
   42                 device_set_desc(dev, "IBM ServeRAID Adapter");
   43                 return (BUS_PROBE_DEFAULT);
   44         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID) &&
   45             (pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)) {
   46                 device_set_desc(dev, "IBM ServeRAID Adapter");
   47                 return (BUS_PROBE_DEFAULT);
   48         } else if ((pci_get_vendor(dev) == IPS_VENDOR_ID_ADAPTEC) &&
   49             (pci_get_device(dev) == IPS_MARCO_DEVICE_ID)) {
   50                 device_set_desc(dev, "Adaptec ServeRAID Adapter");
   51                 return (BUS_PROBE_DEFAULT);
   52         }
   53         return(ENXIO);
   54 }
   55 
   56 static int ips_pci_attach(device_t dev)
   57 {
   58         u_int32_t command;
   59         ips_softc_t *sc;
   60 
   61 
   62         if (resource_disabled(device_get_name(dev), device_get_unit(dev))) {
   63                 device_printf(dev, "device is disabled\n");
   64                 /* but return 0 so the !$)$)*!$*) 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                 sc->ips_poll_cmd     = ips_morpheus_poll;
   81         } else if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID){
   82                 sc->ips_adapter_reinit = ips_copperhead_reinit;
   83                 sc->ips_adapter_intr = ips_copperhead_intr;
   84                 sc->ips_issue_cmd    = ips_issue_copperhead_cmd;
   85                 sc->ips_poll_cmd     = ips_copperhead_poll;
   86         } else if (pci_get_device(dev) == IPS_MARCO_DEVICE_ID){
   87                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   88                 sc->ips_adapter_intr = ips_morpheus_intr;
   89                 sc->ips_issue_cmd = ips_issue_morpheus_cmd;
   90                 sc->ips_poll_cmd     = ips_morpheus_poll;
   91         } else
   92                 goto error;
   93         /* make sure busmastering is on */
   94         command = pci_read_config(dev, PCIR_COMMAND, 1);
   95         command |= PCIM_CMD_BUSMASTEREN;
   96         pci_write_config(dev, PCIR_COMMAND, command, 1);
   97         /* seting up io space */
   98         sc->iores = NULL;
   99         if(command & PCIM_CMD_MEMEN){
  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,
  107                         &sc->rid, RF_ACTIVE);
  108         }
  109         if(!sc->iores && command & PCIM_CMD_PORTEN){
  110                 PRINTF(10, "trying PORTIO\n");
  111                 sc->rid = PCIR_BAR(0);
  112                 sc->iotype = SYS_RES_IOPORT;
  113                 sc->iores = bus_alloc_resource_any(dev, sc->iotype, 
  114                         &sc->rid, RF_ACTIVE);
  115         }
  116         if(sc->iores == NULL){
  117                 device_printf(dev, "resource allocation failed\n");
  118                 return (ENXIO);
  119         }
  120         sc->bustag = rman_get_bustag(sc->iores);
  121         sc->bushandle = rman_get_bushandle(sc->iores);
  122         /*allocate an interrupt. when does the irq become active? after leaving attach? */
  123         sc->irqrid = 0;
  124         if(!(sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  125                 &sc->irqrid, RF_SHAREABLE | RF_ACTIVE))){
  126                 device_printf(dev, "irq allocation failed\n");
  127                 goto error;
  128         }
  129         if(bus_setup_intr(dev, sc->irqres, INTR_TYPE_BIO|INTR_MPSAFE, 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( /* parent    */ NULL,
  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", MTX_DEF, 0);
  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: 2365fa35c46fbf305d84f1f1caee958f


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