FreeBSD/Linux Kernel Cross Reference
sys/dev/cardbus/ehci_cardbus.c

     /*      $OpenBSD: ehci_cardbus.c,v 1.23 2022/04/06 18:59:27 naddy Exp $ */
     /*      $NetBSD: ehci_cardbus.c,v 1.6.6.3 2004/09/21 13:27:25 skrll 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.
     *
     * 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/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/rwlock.h>
    #include <sys/device.h>
    
    #include <machine/bus.h>
    
    #include <dev/cardbus/cardbusvar.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/ehcireg.h>
    #include <dev/usb/ehcivar.h>
    
    int     ehci_cardbus_match(struct device *, void *, void *);
    void    ehci_cardbus_attach(struct device *, struct device *, void *);
    int     ehci_cardbus_detach(struct device *, int);
    
    struct ehci_cardbus_softc {
            struct ehci_softc       sc;
            cardbus_chipset_tag_t   sc_cc;
            cardbus_function_tag_t  sc_cf;
            cardbus_devfunc_t       sc_ct;
            void                    *sc_ih;         /* interrupt vectoring */
    };
    
    const struct cfattach ehci_cardbus_ca = {
            sizeof(struct ehci_cardbus_softc), ehci_cardbus_match,
            ehci_cardbus_attach, ehci_cardbus_detach, ehci_activate
    };
    
    #define CARDBUS_CBMEM PCI_CBMEM
    #define cardbus_findvendor pci_findvendor
    
    int
    ehci_cardbus_match(struct device *parent, void *match, void *aux)
    {
            struct cardbus_attach_args *ca = (struct cardbus_attach_args *)aux;
    
            if (PCI_CLASS(ca->ca_class) == PCI_CLASS_SERIALBUS &&
                PCI_SUBCLASS(ca->ca_class) == PCI_SUBCLASS_SERIALBUS_USB &&
                PCI_INTERFACE(ca->ca_class) == PCI_INTERFACE_EHCI)
                    return (1);
     
            return (0);
    }
    
    void
    ehci_cardbus_attach(struct device *parent, struct device *self, void *aux)
    {
            struct ehci_cardbus_softc *sc = (struct ehci_cardbus_softc *)self;
            struct cardbus_attach_args *ca = aux;
            cardbus_devfunc_t ct = ca->ca_ct;
            cardbus_chipset_tag_t cc = ct->ct_cc;
            pci_chipset_tag_t pc = ca->ca_pc;
            cardbus_function_tag_t cf = ct->ct_cf;
            pcireg_t csr;
            usbd_status r;
            const char *vendor;
            const char *devname = sc->sc.sc_bus.bdev.dv_xname;
    
            /* Map I/O registers */
           if (Cardbus_mapreg_map(ct, CARDBUS_CBMEM, PCI_MAPREG_TYPE_MEM, 0,
                              &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) {
                   printf(": can't map mem space\n");
                   return;
           }
   
           sc->sc_cc = cc;
           sc->sc_cf = cf;
           sc->sc_ct = ct;
           sc->sc.sc_bus.dmatag = ca->ca_dmat;
   
           (ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
           (ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
   
           /* Enable the device. */
           csr = pci_conf_read(pc, ca->ca_tag,
                                   PCI_COMMAND_STATUS_REG);
           pci_conf_write(pc, ca->ca_tag, PCI_COMMAND_STATUS_REG,
                          csr | PCI_COMMAND_MASTER_ENABLE
                              | PCI_COMMAND_MEM_ENABLE);
   
           /* Disable interrupts, so we don't get any spurious ones. */
           sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH);
           EOWRITE2(&sc->sc, EHCI_USBINTR, 0);
   
           sc->sc_ih = cardbus_intr_establish(cc, cf, ca->ca_intrline,
               IPL_USB | IPL_MPSAFE, ehci_intr, sc, devname);
           if (sc->sc_ih == NULL) {
                   printf(": unable to establish interrupt\n");
                   return;
           }
           printf(": irq %d\n", ca->ca_intrline);
   
           /* Figure out vendor for root hub descriptor. */
           vendor = cardbus_findvendor(ca->ca_id);
           sc->sc.sc_id_vendor = PCI_VENDOR(ca->ca_id);
           if (vendor)
                   strlcpy(sc->sc.sc_vendor, vendor, sizeof(sc->sc.sc_vendor));
           else
                   snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor),
                       "vendor 0x%04x", PCI_VENDOR(ca->ca_id));
           
           r = ehci_init(&sc->sc);
           if (r != USBD_NORMAL_COMPLETION) {
                   printf("%s: init failed, error=%d\n", devname, r);
   
                   /* Avoid spurious interrupts. */
                   cardbus_intr_disestablish(sc->sc_cc, sc->sc_cf, sc->sc_ih);
                   sc->sc_ih = NULL;
   
                   return;
           }
   
           /* Attach usb device. */
           config_found(self, &sc->sc.sc_bus, usbctlprint);
   }
   
   int
   ehci_cardbus_detach(struct device *self, int flags)
   {
           struct ehci_cardbus_softc *sc = (struct ehci_cardbus_softc *)self;
           struct cardbus_devfunc *ct = sc->sc_ct;
           int rv;
   
           rv = ehci_detach(self, flags);
           if (rv)
                   return (rv);
           if (sc->sc_ih != NULL) {
                   cardbus_intr_disestablish(sc->sc_cc, sc->sc_cf, sc->sc_ih);
                   sc->sc_ih = NULL;
           }
           if (sc->sc.sc_size) {
                   Cardbus_mapreg_unmap(ct, CARDBUS_CBMEM, sc->sc.iot,
                       sc->sc.ioh, sc->sc.sc_size);
                   sc->sc.sc_size = 0;
           }
           return (0);
   }

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