FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/ohci_pci.c

     /*      $NetBSD: ohci_pci.c,v 1.23 2002/10/02 16:51:47 thorpej Exp $    */
     
     /*
      * Copyright (c) 1998 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Lennart Augustsson (lennart@augustsson.net) at
      * Carlstedt Research & Technology.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *        This product includes software developed by the NetBSD
     *        Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: ohci_pci.c,v 1.23 2002/10/02 16:51:47 thorpej Exp $");
    
    #include "ehci.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/device.h>
    #include <sys/proc.h>
    #include <sys/queue.h>
    
    #include <machine/bus.h>
    
    #include <dev/pci/pcivar.h>
    #include <dev/pci/usb_pci.h>
    
    #include <dev/usb/usb.h>
    #include <dev/usb/usbdi.h>
    #include <dev/usb/usbdivar.h>
    #include <dev/usb/usb_mem.h>
    
    #include <dev/usb/ohcireg.h>
    #include <dev/usb/ohcivar.h>
    
    int     ohci_pci_match(struct device *, struct cfdata *, void *);
    void    ohci_pci_attach(struct device *, struct device *, void *);
    int     ohci_pci_detach(device_ptr_t, int);
    
    struct ohci_pci_softc {
            ohci_softc_t            sc;
    #if NEHCI > 0
            struct usb_pci          sc_pci;
    #endif
            pci_chipset_tag_t       sc_pc;
            void                    *sc_ih;         /* interrupt vectoring */
    };
    
    CFATTACH_DECL(ohci_pci, sizeof(struct ohci_pci_softc),
        ohci_pci_match, ohci_pci_attach, ohci_pci_detach, ohci_activate);
    
    int
    ohci_pci_match(struct device *parent, struct cfdata *match, void *aux)
    {
            struct pci_attach_args *pa = (struct pci_attach_args *) aux;
    
            if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS &&
                PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB &&
                PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI)
                    return (1);
     
            return (0);
    }
    
    void
    ohci_pci_attach(struct device *parent, struct device *self, void *aux)
    {
            struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self;
            struct pci_attach_args *pa = (struct pci_attach_args *)aux;
            pci_chipset_tag_t pc = pa->pa_pc;
           pcitag_t tag = pa->pa_tag;
           char const *intrstr;
           pci_intr_handle_t ih;
           pcireg_t csr;
           char devinfo[256];
           usbd_status r;
           char *vendor;
           char *devname = sc->sc.sc_bus.bdev.dv_xname;
   
           pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
           printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
   
           /* Map I/O registers */
           if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0,
                              &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) {
                   printf("%s: can't map mem space\n", devname);
                   return;
           }
   
           /* Disable interrupts, so we don't get any spurious ones. */
           bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
                             OHCI_ALL_INTRS);
   
           sc->sc_pc = pc;
           sc->sc.sc_bus.dmatag = pa->pa_dmat;
   
           /* Enable the device. */
           csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
           pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG,
                          csr | PCI_COMMAND_MASTER_ENABLE);
   
           /* Map and establish the interrupt. */
           if (pci_intr_map(pa, &ih)) {
                   printf("%s: couldn't map interrupt\n", devname);
                   return;
           }
           intrstr = pci_intr_string(pc, ih);
           sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc);
           if (sc->sc_ih == NULL) {
                   printf("%s: couldn't establish interrupt", devname);
                   if (intrstr != NULL)
                           printf(" at %s", intrstr);
                   printf("\n");
                   return;
           }
           printf("%s: interrupting at %s\n", devname, intrstr);
   
           /* Figure out vendor for root hub descriptor. */
           vendor = pci_findvendor(pa->pa_id);
           sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id);
           if (vendor)
                   strncpy(sc->sc.sc_vendor, vendor, 
                           sizeof(sc->sc.sc_vendor) - 1);
           else
                   sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 
                           PCI_VENDOR(pa->pa_id));
           
           r = ohci_init(&sc->sc);
           if (r != USBD_NORMAL_COMPLETION) {
                   printf("%s: init failed, error=%d\n", devname, r);
                   return;
           }
   
   #if NEHCI > 0
           usb_pci_add(&sc->sc_pci, pa, &sc->sc.sc_bus);
   #endif
   
           /* Attach usb device. */
           sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus,
                                          usbctlprint);
   }
   
   int
   ohci_pci_detach(device_ptr_t self, int flags)
   {
           struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self;
           int rv;
   
           rv = ohci_detach(&sc->sc, flags);
           if (rv)
                   return (rv);
           if (sc->sc_ih != NULL) {
                   pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
                   sc->sc_ih = NULL;
           }
           if (sc->sc.sc_size) {
                   bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
                   sc->sc.sc_size = 0;
           }
   #if NEHCI > 0
           usb_pci_rem(&sc->sc_pci);
   #endif
           return (0);
   }

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