/* $NetBSD: xhci_pci.c,v 1.4 2014/09/21 14:30:22 christos 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 __KERNEL_RCSID(0, "$NetBSD: xhci_pci.c,v 1.4 2014/09/21 14:30:22 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct xhci_pci_softc { struct xhci_softc sc_xhci; pci_chipset_tag_t sc_pc; pcitag_t sc_tag; }; static int xhci_pci_match(device_t parent, cfdata_t 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_XHCI) return 1; return 0; } static void xhci_pci_attach(device_t parent, device_t self, void *aux) { struct xhci_pci_softc * const psc = device_private(self); struct xhci_softc * const sc = &psc->sc_xhci; struct pci_attach_args *const pa = (struct pci_attach_args *)aux; const pci_chipset_tag_t pc = pa->pa_pc; const pcitag_t tag = pa->pa_tag; char const *intrstr; pci_intr_handle_t ih; pcireg_t csr, memtype; int err; //const char *vendor; uint32_t hccparams; char intrbuf[PCI_INTRSTR_LEN]; sc->sc_dev = self; sc->sc_bus.hci_private = sc; pci_aprint_devinfo(pa, "USB Controller"); /* check if memory space access is enabled */ csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); #ifdef DEBUG printf("csr: %08x\n", csr); #endif if ((csr & PCI_COMMAND_MEM_ENABLE) == 0) { aprint_error_dev(self, "memory access is disabled\n"); return; } /* map MMIO registers */ memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, PCI_CBMEM); switch (memtype) { case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: if (pci_mapreg_map(pa, PCI_CBMEM, memtype, 0, &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios)) { sc->sc_ios = 0; aprint_error_dev(self, "can't map mem space\n"); return; } break; default: aprint_error_dev(self, "BAR not 64 or 32-bit MMIO\n"); return; break; } psc->sc_pc = pc; psc->sc_tag = tag; hccparams = bus_space_read_4(sc->sc_iot, sc->sc_ioh, 0x10); if (pci_dma64_available(pa) && ((hccparams&1)==1)) sc->sc_bus.dmatag = pa->pa_dmat64; else sc->sc_bus.dmatag = pa->pa_dmat; /* Enable the device. */ 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)) { aprint_error_dev(self, "couldn't map interrupt\n"); goto fail; } /* * Allocate IRQ */ intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, xhci_intr, sc); if (sc->sc_ih == NULL) { aprint_error_dev(self, "couldn't establish interrupt"); if (intrstr != NULL) aprint_error(" at %s", intrstr); aprint_error("\n"); goto fail; } aprint_normal_dev(self, "interrupting at %s\n", intrstr); #if 0 /* Figure out vendor for root hub descriptor. */ sc->sc_id_vendor = PCI_VENDOR(pa->pa_id); pci_findvendor(sc->sc_vendor, sizeof(sc->sc_vendor), sc->sc_id_vendor); #endif err = xhci_init(sc); if (err) { aprint_error_dev(self, "init failed, error=%d\n", err); goto fail; } if (!pmf_device_register1(self, xhci_suspend, xhci_resume, xhci_shutdown)) aprint_error_dev(self, "couldn't establish power handler\n"); /* Attach usb device. */ sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint); return; fail: if (sc->sc_ih) { pci_intr_disestablish(psc->sc_pc, sc->sc_ih); sc->sc_ih = NULL; } if (sc->sc_ios) { bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); sc->sc_ios = 0; } return; } static int xhci_pci_detach(device_t self, int flags) { struct xhci_pci_softc * const psc = device_private(self); struct xhci_softc * const sc = &psc->sc_xhci; int rv; rv = xhci_detach(sc, flags); if (rv) return rv; pmf_device_deregister(self); xhci_shutdown(self, flags); if (sc->sc_ios) { #if 0 /* 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); #endif } if (sc->sc_ih != NULL) { pci_intr_disestablish(psc->sc_pc, sc->sc_ih); sc->sc_ih = NULL; } if (sc->sc_ios) { bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); sc->sc_ios = 0; } return 0; } CFATTACH_DECL3_NEW(xhci_pci, sizeof(struct xhci_pci_softc), xhci_pci_match, xhci_pci_attach, xhci_pci_detach, xhci_activate, NULL, xhci_childdet, DVF_DETACH_SHUTDOWN);