152 lines
4.4 KiB
C
152 lines
4.4 KiB
C
/* $NetBSD: obio_ehci.c,v 1.2 2008/10/24 17:31:24 matt 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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*
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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: obio_ehci.c,v 1.2 2008/10/24 17:31:24 matt Exp $");
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#include "locators.h"
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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 <arm/gemini/gemini_reg.h>
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#include <arm/gemini/gemini_obiovar.h>
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#include <dev/pci/pcidevs.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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#define EHCI_HCOTGDEV_INTR_STATUS 0xc0
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#define EHCI_HCOTGDEV_INTR_MASK 0xc4
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#define HC_INT 0x04
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#define OTG_INT 0x02
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#define DEV_INT 0x01
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static int
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ehci_obio_intr(void *arg)
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{
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struct ehci_softc * const sc = arg;
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int rv = 0;
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uint32_t v;
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v = bus_space_read_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_STATUS);
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bus_space_write_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_STATUS, v);
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if (v & HC_INT)
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rv = ehci_intr(sc);
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return rv;
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}
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static int
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ehci_obio_match(device_t parent, cfdata_t match, void *aux)
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{
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struct obio_attach_args * const obio = aux;
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if (obio->obio_addr == GEMINI_USB0_BASE
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|| obio->obio_addr == GEMINI_USB1_BASE)
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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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ehci_obio_attach(device_t parent, device_t self, void *aux)
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{
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struct ehci_softc * const sc = device_private(self);
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struct obio_attach_args * const obio = aux;
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const char * const devname = device_xname(self);
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usbd_status r;
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sc->sc_dev = self;
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sc->sc_bus.hci_private = sc;
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sc->iot = obio->obio_iot;
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aprint_naive(": EHCI USB controller\n");
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aprint_normal(": EHCI USB controller\n");
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/* Map I/O registers */
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if (bus_space_map(sc->iot, obio->obio_addr, obio->obio_size, 0,
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&sc->ioh)) {
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aprint_error("%s: can't map memory space\n", devname);
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return;
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}
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sc->sc_bus.dmatag = obio->obio_dmat;
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/* Disable interrupts, so we don't get any spurious ones. */
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sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
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DPRINTF(("%s: offs=%d\n", devname, sc->sc_offs));
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EOWRITE2(sc, EHCI_USBINTR, 0);
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bus_space_write_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_MASK,
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OTG_INT|DEV_INT);
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if (obio->obio_intr != OBIOCF_INTR_DEFAULT) {
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intr_establish(obio->obio_intr, IPL_USB, IST_LEVEL,
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ehci_obio_intr, sc);
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}
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sc->sc_bus.usbrev = USBREV_2_0;
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/* Figure out vendor for root hub descriptor. */
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sc->sc_id_vendor = PCI_VENDOR_FARADAY;
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strlcpy(sc->sc_vendor, "SL351x", sizeof(sc->sc_vendor));
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r = ehci_init(sc);
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if (r != USBD_NORMAL_COMPLETION) {
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aprint_error("%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_child = config_found(self, &sc->sc_bus, usbctlprint);
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}
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CFATTACH_DECL2_NEW(ehci_obio, sizeof(struct ehci_softc),
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ehci_obio_match, ehci_obio_attach, NULL, NULL, NULL, ehci_childdet);
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