246 lines
6.8 KiB
C
246 lines
6.8 KiB
C
/* $NetBSD: ehci_cardbus.c,v 1.37 2021/08/07 16:19:10 thorpej Exp $ */
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/*
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* Copyright (c) 1998 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) at
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* Carlstedt Research & Technology.
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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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*
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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_cardbus.c,v 1.37 2021/08/07 16:19:10 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/bus.h>
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#if defined pciinc
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#include <dev/pci/pcidevs.h>
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#endif
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#include <dev/cardbus/cardbusvar.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/cardbus/usb_cardbus.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_cardbus_match(device_t, cfdata_t, void *);
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void ehci_cardbus_attach(device_t, device_t, void *);
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int ehci_cardbus_detach(device_t, int);
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struct ehci_cardbus_softc {
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ehci_softc_t sc;
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cardbus_chipset_tag_t sc_cc;
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cardbus_function_tag_t sc_cf;
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cardbus_devfunc_t sc_ct;
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void *sc_ih; /* interrupt vectoring */
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};
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CFATTACH_DECL_NEW(ehci_cardbus, sizeof(struct ehci_cardbus_softc),
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ehci_cardbus_match, ehci_cardbus_attach, ehci_cardbus_detach,
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ehci_activate);
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static TAILQ_HEAD(, usb_cardbus) ehci_cardbus_alldevs =
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TAILQ_HEAD_INITIALIZER(ehci_cardbus_alldevs);
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int
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ehci_cardbus_match(device_t parent, cfdata_t match, void *aux)
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{
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struct cardbus_attach_args *ca = (struct cardbus_attach_args *)aux;
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if (PCI_CLASS(ca->ca_class) == PCI_CLASS_SERIALBUS &&
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PCI_SUBCLASS(ca->ca_class) == PCI_SUBCLASS_SERIALBUS_USB &&
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PCI_INTERFACE(ca->ca_class) == PCI_INTERFACE_EHCI)
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return 1;
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return 0;
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}
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static bool
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ehci_cardbus_suspend(device_t dv, const pmf_qual_t *qual)
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{
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ehci_suspend(dv, qual);
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#if 0
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struct ehci_cardbus_softc *sc = device_private(dv);
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ehci_release_ownership(&sc->sc, sc->sc_pc, sc->sc_tag);
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#endif
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return true;
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}
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static bool
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ehci_cardbus_resume(device_t dv, const pmf_qual_t *qual)
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{
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#if 0
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struct ehci_cardbus_softc *sc = device_private(dv);
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ehci_get_ownership(&sc->sc, sc->sc_pc, sc->sc_tag);
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#endif
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return ehci_resume(dv, qual);
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}
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void
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ehci_cardbus_attach(device_t parent, device_t self, void *aux)
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{
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struct ehci_cardbus_softc *sc = device_private(self);
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struct cardbus_attach_args *ca = aux;
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cardbus_devfunc_t ct = ca->ca_ct;
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cardbus_chipset_tag_t cc = ct->ct_cc;
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cardbus_function_tag_t cf = ct->ct_cf;
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pcireg_t csr;
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char devinfo[256];
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u_int ncomp;
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const char *devname = device_xname(self);
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struct usb_cardbus *up;
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sc->sc.sc_dev = self;
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sc->sc.sc_bus.ub_hcpriv = sc;
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aprint_naive("\n");
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pci_devinfo(ca->ca_id, ca->ca_class, 0, devinfo, sizeof(devinfo));
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aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
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PCI_REVISION(ca->ca_class));
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/* Map I/O registers */
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if (Cardbus_mapreg_map(ct, 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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aprint_error("%s: can't map mem space\n", devname);
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return;
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}
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sc->sc_cc = cc;
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sc->sc_cf = cf;
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sc->sc_ct = ct;
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sc->sc.sc_bus.ub_dmatag = ca->ca_dmat;
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/* Enable the device. */
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csr = Cardbus_conf_read(ct, ca->ca_tag, PCI_COMMAND_STATUS_REG);
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Cardbus_conf_write(ct, ca->ca_tag, PCI_COMMAND_STATUS_REG,
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csr | PCI_COMMAND_MASTER_ENABLE
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| PCI_COMMAND_MEM_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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sc->sc_ih = Cardbus_intr_establish(ct, IPL_USB, ehci_intr, sc);
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if (sc->sc_ih == NULL) {
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aprint_error("%s: couldn't establish interrupt\n", devname);
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return;
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}
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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_cardbus_alldevs, next) {
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if (up->bus == ca->ca_bus) {
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DPRINTF(("ehci_cardbus_attach: companion %s\n",
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device_xname(up->usb)));
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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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int err = ehci_init(&sc->sc);
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if (err) {
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aprint_error("%s: init failed, error=%d\n", devname, err);
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/* Avoid spurious interrupts. */
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Cardbus_intr_disestablish(ct, sc->sc_ih);
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sc->sc_ih = NULL;
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return;
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}
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if (!pmf_device_register1(self, ehci_cardbus_suspend,
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ehci_cardbus_resume, ehci_shutdown))
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aprint_error_dev(self, "couldn't establish power handler\n");
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/* Attach usb device. */
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sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint,
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CFARGS_NONE);
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}
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int
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ehci_cardbus_detach(device_t self, int flags)
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{
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struct ehci_cardbus_softc *sc = device_private(self);
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struct cardbus_devfunc *ct = sc->sc_ct;
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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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Cardbus_intr_disestablish(ct, 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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Cardbus_mapreg_unmap(ct, PCI_CBMEM, sc->sc.iot,
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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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void
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usb_cardbus_add(struct usb_cardbus *up, struct cardbus_attach_args *ca,
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device_t bu)
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{
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TAILQ_INSERT_TAIL(&ehci_cardbus_alldevs, up, next);
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up->bus = ca->ca_bus;
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up->function = ca->ca_function;
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up->usb = bu;
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}
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void
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usb_cardbus_rem(struct usb_cardbus *up)
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{
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TAILQ_REMOVE(&ehci_cardbus_alldevs, up, next);
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}
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