224 lines
6.7 KiB
C
224 lines
6.7 KiB
C
/* $NetBSD: ehci_pci.c,v 1.12 2002/10/02 16:51:11 thorpej Exp $ */
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/*
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* Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (lennart@augustsson.net).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ehci_pci.c,v 1.12 2002/10/02 16:51:11 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/queue.h>
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#include <machine/bus.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/usb_pci.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdivar.h>
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#include <dev/usb/usb_mem.h>
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#include <dev/usb/ehcireg.h>
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#include <dev/usb/ehcivar.h>
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#ifdef EHCI_DEBUG
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#define DPRINTF(x) if (ehcidebug) printf x
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extern int ehcidebug;
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#else
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#define DPRINTF(x)
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#endif
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int ehci_pci_match(struct device *, struct cfdata *, void *);
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void ehci_pci_attach(struct device *, struct device *, void *);
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int ehci_pci_detach(device_ptr_t, int);
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struct ehci_pci_softc {
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ehci_softc_t sc;
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pci_chipset_tag_t sc_pc;
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pcitag_t sc_tag;
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void *sc_ih; /* interrupt vectoring */
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};
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CFATTACH_DECL(ehci_pci, sizeof(struct ehci_pci_softc),
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ehci_pci_match, ehci_pci_attach, ehci_pci_detach, ehci_activate);
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int
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ehci_pci_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct pci_attach_args *pa = (struct pci_attach_args *) aux;
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if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS &&
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PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB &&
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PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_EHCI)
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return (1);
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return (0);
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}
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void
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ehci_pci_attach(struct device *parent, struct device *self, void *aux)
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{
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struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self;
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struct pci_attach_args *pa = (struct pci_attach_args *)aux;
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pci_chipset_tag_t pc = pa->pa_pc;
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pcitag_t tag = pa->pa_tag;
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char const *intrstr;
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pci_intr_handle_t ih;
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pcireg_t csr;
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char *vendor;
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char *devname = sc->sc.sc_bus.bdev.dv_xname;
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char devinfo[256];
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usbd_status r;
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int ncomp;
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struct usb_pci *up;
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
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printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
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/* Map I/O registers */
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if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0,
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&sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) {
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printf("%s: can't map memory space\n", devname);
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return;
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}
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sc->sc_pc = pc;
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sc->sc_tag = tag;
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sc->sc.sc_bus.dmatag = pa->pa_dmat;
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/* Enable the device. */
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csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
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pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG,
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csr | PCI_COMMAND_MASTER_ENABLE);
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/* Disable interrupts, so we don't get any spurious ones. */
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sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH);
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DPRINTF(("%s: offs=%d\n", devname, sc->sc.sc_offs));
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EOWRITE2(&sc->sc, EHCI_USBINTR, 0);
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/* Map and establish the interrupt. */
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if (pci_intr_map(pa, &ih)) {
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printf("%s: couldn't map interrupt\n", devname);
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return;
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}
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intrstr = pci_intr_string(pc, ih);
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sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ehci_intr, sc);
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if (sc->sc_ih == NULL) {
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printf("%s: couldn't establish interrupt", devname);
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if (intrstr != NULL)
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printf(" at %s", intrstr);
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printf("\n");
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return;
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}
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printf("%s: interrupting at %s\n", devname, intrstr);
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switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) {
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case PCI_USBREV_PRE_1_0:
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case PCI_USBREV_1_0:
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case PCI_USBREV_1_1:
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sc->sc.sc_bus.usbrev = USBREV_UNKNOWN;
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printf("%s: pre-2.0 USB rev\n", devname);
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return;
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case PCI_USBREV_2_0:
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sc->sc.sc_bus.usbrev = USBREV_2_0;
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break;
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default:
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sc->sc.sc_bus.usbrev = USBREV_UNKNOWN;
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break;
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}
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/* Figure out vendor for root hub descriptor. */
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vendor = pci_findvendor(pa->pa_id);
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sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id);
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if (vendor)
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strncpy(sc->sc.sc_vendor, vendor,
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sizeof(sc->sc.sc_vendor) - 1);
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else
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sprintf(sc->sc.sc_vendor, "vendor 0x%04x",
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PCI_VENDOR(pa->pa_id));
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/*
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* Find companion controllers. According to the spec they always
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* have lower function numbers so they should be enumerated already.
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*/
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ncomp = 0;
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TAILQ_FOREACH(up, &ehci_pci_alldevs, next) {
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if (up->bus == pa->pa_bus && up->device == pa->pa_device) {
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DPRINTF(("ehci_pci_attach: companion %s\n",
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USBDEVNAME(up->usb->bdev)));
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sc->sc.sc_comps[ncomp++] = up->usb;
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if (ncomp >= EHCI_COMPANION_MAX)
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break;
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}
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}
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sc->sc.sc_ncomp = ncomp;
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r = ehci_init(&sc->sc);
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if (r != USBD_NORMAL_COMPLETION) {
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printf("%s: init failed, error=%d\n", devname, r);
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return;
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}
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/* Attach usb device. */
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sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus,
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usbctlprint);
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}
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int
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ehci_pci_detach(device_ptr_t self, int flags)
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{
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struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self;
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int rv;
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rv = ehci_detach(&sc->sc, flags);
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if (rv)
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return (rv);
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if (sc->sc_ih != NULL) {
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pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
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sc->sc_ih = NULL;
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}
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if (sc->sc.sc_size) {
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bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
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sc->sc.sc_size = 0;
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}
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return (0);
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}
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