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/11.2/sys/dev/ips/ips_pci.c 331722 2018-03-29 02:50:57Z eadler $");
   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         DEVICE_PRINTF(1, dev, "in attach.\n");
   65         sc = (ips_softc_t *)device_get_softc(dev);
   66         sc->dev = dev;
   67         mtx_init(&sc->queue_mtx, "IPS bioqueue lock", NULL, MTX_DEF);
   68         sema_init(&sc->cmd_sema, 0, "IPS Command Semaphore");
   69         callout_init_mtx(&sc->timer, &sc->queue_mtx, 0);
   70 
   71         if(pci_get_device(dev) == IPS_MORPHEUS_DEVICE_ID){
   72                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   73                 sc->ips_adapter_intr = ips_morpheus_intr;
   74                 sc->ips_issue_cmd    = ips_issue_morpheus_cmd;
   75                 sc->ips_poll_cmd     = ips_morpheus_poll;
   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                 sc->ips_poll_cmd     = ips_copperhead_poll;
   81         } else if (pci_get_device(dev) == IPS_MARCO_DEVICE_ID){
   82                 sc->ips_adapter_reinit = ips_morpheus_reinit;
   83                 sc->ips_adapter_intr = ips_morpheus_intr;
   84                 sc->ips_issue_cmd = ips_issue_morpheus_cmd;
   85                 sc->ips_poll_cmd     = ips_morpheus_poll;
   86         } else
   87                 goto error;
   88         /* make sure busmastering is on */
   89         pci_enable_busmaster(dev);
   90         /* setting up io space */
   91         sc->iores = NULL;
   92         PRINTF(10, "trying MEMIO\n");
   93         if(pci_get_device(dev) == IPS_COPPERHEAD_DEVICE_ID)
   94                 sc->rid = PCIR_BAR(1);
   95         else
   96                 sc->rid = PCIR_BAR(0);
   97         sc->iotype = SYS_RES_MEMORY;
   98         sc->iores = bus_alloc_resource_any(dev, sc->iotype, &sc->rid,
   99             RF_ACTIVE);
  100         if(!sc->iores){
  101                 PRINTF(10, "trying PORTIO\n");
  102                 sc->rid = PCIR_BAR(0);
  103                 sc->iotype = SYS_RES_IOPORT;
  104                 sc->iores = bus_alloc_resource_any(dev, sc->iotype, 
  105                         &sc->rid, RF_ACTIVE);
  106         }
  107         if(sc->iores == NULL){
  108                 device_printf(dev, "resource allocation failed\n");
  109                 return (ENXIO);
  110         }
  111         /*allocate an interrupt. when does the irq become active? after leaving attach? */
  112         sc->irqrid = 0;
  113         if(!(sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  114                 &sc->irqrid, RF_SHAREABLE | RF_ACTIVE))){
  115                 device_printf(dev, "irq allocation failed\n");
  116                 goto error;
  117         }
  118         if(bus_setup_intr(dev, sc->irqres, INTR_TYPE_BIO|INTR_MPSAFE, NULL, 
  119             sc->ips_adapter_intr, sc, &sc->irqcookie)){
  120                 device_printf(dev, "irq setup failed\n");
  121                 goto error;
  122         }
  123         if (bus_dma_tag_create( /* PCI parent */bus_get_dma_tag(dev),
  124                                 /* alignemnt */ 1,
  125                                 /* boundary  */ 0,
  126                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
  127                                 /* highaddr  */ BUS_SPACE_MAXADDR,
  128                                 /* filter    */ NULL,
  129                                 /* filterarg */ NULL,
  130                                 /* maxsize   */ BUS_SPACE_MAXSIZE_32BIT,
  131                                 /* numsegs   */ IPS_MAX_SG_ELEMENTS,
  132                                 /* maxsegsize*/ BUS_SPACE_MAXSIZE_32BIT,
  133                                 /* flags     */ 0,
  134                                 /* lockfunc  */ NULL,
  135                                 /* lockarg   */ NULL,
  136                                 &sc->adapter_dmatag) != 0) {
  137                 device_printf(dev, "can't alloc dma tag\n");
  138                 goto error;
  139         }
  140         sc->ips_ich.ich_func = ips_intrhook;
  141         sc->ips_ich.ich_arg = sc;
  142         bioq_init(&sc->queue);
  143         if (config_intrhook_establish(&sc->ips_ich) != 0) {
  144                 printf("IPS can't establish configuration hook\n");
  145                 goto error;
  146         }
  147         return 0;
  148 error:
  149         ips_pci_free(sc);
  150         return (ENXIO);
  151 }
  152 
  153 static void
  154 ips_intrhook(void *arg)
  155 {
  156         struct ips_softc *sc = (struct ips_softc *)arg;
  157 
  158         config_intrhook_disestablish(&sc->ips_ich);
  159         if (ips_adapter_init(sc))
  160                 ips_pci_free(sc);
  161         else
  162                 sc->configured = 1;
  163 }
  164 
  165 static int ips_pci_free(ips_softc_t *sc)
  166 {
  167         if(sc->adapter_dmatag)
  168                 bus_dma_tag_destroy(sc->adapter_dmatag);
  169         if(sc->irqcookie)
  170                 bus_teardown_intr(sc->dev, sc->irqres, sc->irqcookie);
  171         if(sc->irqres)
  172                bus_release_resource(sc->dev, SYS_RES_IRQ, sc->irqrid, sc->irqres);
  173         if(sc->iores)
  174                 bus_release_resource(sc->dev, sc->iotype, sc->rid, sc->iores);
  175         sc->configured = 0;
  176         mtx_destroy(&sc->queue_mtx);
  177         sema_destroy(&sc->cmd_sema);
  178         return 0;
  179 }
  180 
  181 static int ips_pci_detach(device_t dev)
  182 {
  183         ips_softc_t *sc;
  184         DEVICE_PRINTF(1, dev, "detaching ServeRaid\n");
  185         sc = (ips_softc_t *) device_get_softc(dev);
  186         if (sc->configured) {
  187                 sc->configured = 0;
  188                 ips_flush_cache(sc);
  189                 if(ips_adapter_free(sc))
  190                         return EBUSY;
  191                 ips_pci_free(sc);
  192                 bioq_flush(&sc->queue, NULL, ENXIO);
  193         }
  194         return 0;
  195 }
  196 
  197 static int ips_pci_shutdown(device_t dev)
  198 {
  199         ips_softc_t *sc = (ips_softc_t *) device_get_softc(dev);
  200         if (sc->configured) {
  201                 ips_flush_cache(sc);
  202         }
  203         return 0;
  204 }
  205 
  206 static device_method_t ips_driver_methods[] = {
  207         DEVMETHOD(device_probe, ips_pci_probe),
  208         DEVMETHOD(device_attach, ips_pci_attach),
  209         DEVMETHOD(device_detach, ips_pci_detach),
  210         DEVMETHOD(device_shutdown, ips_pci_shutdown),
  211         {0,0}
  212 };
  213 
  214 static driver_t ips_pci_driver = {
  215         "ips",
  216         ips_driver_methods,
  217         sizeof(ips_softc_t),
  218 };
  219 
  220 static devclass_t ips_devclass;
  221 DRIVER_MODULE(ips, pci, ips_pci_driver, ips_devclass, 0, 0);

Cache object: 608d15dbd08dd5ae2f91948e1ece552a


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