228 lines
6.2 KiB
C
228 lines
6.2 KiB
C
/* $NetBSD: xhci_pci.c,v 1.4 2014/09/21 14:30:22 christos 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: xhci_pci.c,v 1.4 2014/09/21 14:30:22 christos 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 <sys/bus.h>
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#include <dev/pci/pcivar.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/xhcireg.h>
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#include <dev/usb/xhcivar.h>
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struct xhci_pci_softc {
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struct xhci_softc sc_xhci;
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pci_chipset_tag_t sc_pc;
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pcitag_t sc_tag;
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};
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static int
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xhci_pci_match(device_t parent, cfdata_t 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_XHCI)
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return 1;
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return 0;
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}
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static void
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xhci_pci_attach(device_t parent, device_t self, void *aux)
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{
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struct xhci_pci_softc * const psc = device_private(self);
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struct xhci_softc * const sc = &psc->sc_xhci;
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struct pci_attach_args *const pa = (struct pci_attach_args *)aux;
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const pci_chipset_tag_t pc = pa->pa_pc;
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const 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, memtype;
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int err;
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//const char *vendor;
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uint32_t hccparams;
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char intrbuf[PCI_INTRSTR_LEN];
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sc->sc_dev = self;
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sc->sc_bus.hci_private = sc;
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pci_aprint_devinfo(pa, "USB Controller");
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/* check if memory space access is enabled */
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csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
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#ifdef DEBUG
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printf("csr: %08x\n", csr);
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#endif
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if ((csr & PCI_COMMAND_MEM_ENABLE) == 0) {
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aprint_error_dev(self, "memory access is disabled\n");
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return;
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}
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/* map MMIO registers */
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memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, PCI_CBMEM);
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switch (memtype) {
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case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT:
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case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT:
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if (pci_mapreg_map(pa, PCI_CBMEM, memtype, 0,
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&sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios)) {
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sc->sc_ios = 0;
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aprint_error_dev(self, "can't map mem space\n");
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return;
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}
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break;
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default:
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aprint_error_dev(self, "BAR not 64 or 32-bit MMIO\n");
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return;
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break;
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}
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psc->sc_pc = pc;
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psc->sc_tag = tag;
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hccparams = bus_space_read_4(sc->sc_iot, sc->sc_ioh, 0x10);
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if (pci_dma64_available(pa) && ((hccparams&1)==1))
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sc->sc_bus.dmatag = pa->pa_dmat64;
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else
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sc->sc_bus.dmatag = pa->pa_dmat;
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/* Enable the device. */
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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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/* Map and establish the interrupt. */
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if (pci_intr_map(pa, &ih)) {
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aprint_error_dev(self, "couldn't map interrupt\n");
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goto fail;
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}
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/*
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* Allocate IRQ
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*/
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intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
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sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, xhci_intr, sc);
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if (sc->sc_ih == NULL) {
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aprint_error_dev(self, "couldn't establish interrupt");
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if (intrstr != NULL)
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aprint_error(" at %s", intrstr);
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aprint_error("\n");
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goto fail;
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}
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aprint_normal_dev(self, "interrupting at %s\n", intrstr);
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#if 0
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/* Figure out vendor for root hub descriptor. */
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sc->sc_id_vendor = PCI_VENDOR(pa->pa_id);
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pci_findvendor(sc->sc_vendor, sizeof(sc->sc_vendor),
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sc->sc_id_vendor);
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#endif
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err = xhci_init(sc);
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if (err) {
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aprint_error_dev(self, "init failed, error=%d\n", err);
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goto fail;
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}
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if (!pmf_device_register1(self, xhci_suspend, xhci_resume,
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xhci_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_child = config_found(self, &sc->sc_bus, usbctlprint);
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return;
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fail:
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if (sc->sc_ih) {
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pci_intr_disestablish(psc->sc_pc, sc->sc_ih);
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sc->sc_ih = NULL;
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}
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if (sc->sc_ios) {
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bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
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sc->sc_ios = 0;
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}
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return;
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}
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static int
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xhci_pci_detach(device_t self, int flags)
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{
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struct xhci_pci_softc * const psc = device_private(self);
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struct xhci_softc * const sc = &psc->sc_xhci;
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int rv;
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rv = xhci_detach(sc, flags);
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if (rv)
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return rv;
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pmf_device_deregister(self);
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xhci_shutdown(self, flags);
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if (sc->sc_ios) {
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#if 0
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/* Disable interrupts, so we don't get any spurious ones. */
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bus_space_write_4(sc->sc_iot, sc->sc_ioh,
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OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
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#endif
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}
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if (sc->sc_ih != NULL) {
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pci_intr_disestablish(psc->sc_pc, sc->sc_ih);
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sc->sc_ih = NULL;
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}
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if (sc->sc_ios) {
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bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
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sc->sc_ios = 0;
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}
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return 0;
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}
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CFATTACH_DECL3_NEW(xhci_pci, sizeof(struct xhci_pci_softc),
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xhci_pci_match, xhci_pci_attach, xhci_pci_detach, xhci_activate, NULL,
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xhci_childdet, DVF_DETACH_SHUTDOWN);
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