/* $OpenBSD: ohci_pci.c,v 1.40 2014/05/16 18:17:03 mpi Exp $ */ /* $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. * * 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. */ /* * USB Open Host Controller driver. * * OHCI spec: http://www.intel.com/design/usb/ohci11d.pdf * USB spec: http://www.teleport.com/cgi-bin/mailmerge.cgi/~usb/cgiform.tpl */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include int ohci_pci_match(struct device *, void *, void *); void ohci_pci_attach(struct device *, struct device *, void *); void ohci_pci_attach_deferred(struct device *); int ohci_pci_detach(struct device *, int); struct ohci_pci_softc { struct ohci_softc sc; pci_chipset_tag_t sc_pc; void *sc_ih; /* interrupt vectoring */ }; struct cfattach ohci_pci_ca = { sizeof(struct ohci_pci_softc), ohci_pci_match, ohci_pci_attach, ohci_pci_detach, ohci_activate }; int ohci_pci_match(struct device *parent, void *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; char const *intrstr; pci_intr_handle_t ih; int s; const char *vendor; char *devname = sc->sc.sc_bus.bdev.dv_xname; /* 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, 0)) { printf(": can't map mem space\n"); return; } /* Record what interrupts were enabled by SMM/BIOS. */ sc->sc.sc_intre = bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_ENABLE); /* Disable interrupts, so we don't get any spurious ones. */ bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, OHCI_MIE); sc->sc_pc = pc; sc->sc.sc_bus.dmatag = pa->pa_dmat; bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size, BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, OHCI_MIE); s = splusb(); /* Map and establish the interrupt. */ if (pci_intr_map(pa, &ih)) { printf(": couldn't map interrupt\n"); bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); splx(s); return; } intrstr = pci_intr_string(pc, ih); sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc, devname); if (sc->sc_ih == NULL) { printf(": couldn't establish interrupt"); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); splx(s); return; } printf(": %s", 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) 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(pa->pa_id)); /* Display revision and perform legacy emulation handover. */ if (ohci_checkrev(&sc->sc) != USBD_NORMAL_COMPLETION || ohci_handover(&sc->sc) != USBD_NORMAL_COMPLETION) { bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); pci_intr_disestablish(sc->sc_pc, sc->sc_ih); splx(s); return; } /* Ignore interrupts for now */ sc->sc.sc_bus.dying = 1; config_defer(self, ohci_pci_attach_deferred); splx(s); return; } void ohci_pci_attach_deferred(struct device *self) { struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; usbd_status r; int s; s = splusb(); sc->sc.sc_bus.dying = 0; r = ohci_init(&sc->sc); if (r != USBD_NORMAL_COMPLETION) { printf("%s: init failed, error=%d\n", sc->sc.sc_bus.bdev.dv_xname, r); bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); pci_intr_disestablish(sc->sc_pc, sc->sc_ih); splx(s); return; } splx(s); /* Attach usb device. */ config_found(self, &sc->sc.sc_bus, usbctlprint); } int ohci_pci_detach(struct device *self, int flags) { struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; int rv; rv = ohci_detach(self, 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; } return (0); }