1a7cfd07a3
resource. Avoids useless interrupts occurring between the allocation of the interrupt resource and the final initialisation of the kernel. Cause of these interrupts is unknown (a resuming device?).
255 lines
7.5 KiB
C
255 lines
7.5 KiB
C
/* FreeBSD $Id: uhci_pci.c,v 1.6 1999/04/16 21:22:53 peter 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 (augustss@carlstedt.se) 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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/* Universal Host Controller Interface
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*
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* UHCI spec: http://www.intel.com/
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*/
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/* The low level controller code for UHCI has been split into
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* PCI probes and UHCI specific code. This was done to facilitate the
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* sharing of code between *BSD's
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*/
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#include "opt_bus.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/module.h>
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#include <sys/bus.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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#if defined(__FreeBSD__)
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#include <machine/bus_pio.h>
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#endif
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <pci/pcivar.h>
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#include <pci/pcireg.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/uhcireg.h>
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#include <dev/usb/uhcivar.h>
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#define PCI_UHCI_VENDORID_INTEL 0x8086
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#define PCI_UHCI_VENDORID_VIA 0x1106
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#define PCI_UHCI_DEVICEID_PIIX3 0x70208086ul
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static const char *uhci_device_piix3 = "Intel 82371SB (PIIX3) USB Host Controller";
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#define PCI_UHCI_DEVICEID_PIIX4 0x71128086ul
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#define PCI_UHCI_DEVICEID_PIIX4E 0x71128086ul /* no separate step */
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static const char *uhci_device_piix4 = "Intel 82371AB/EB (PIIX4) USB Host Controller";
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#define PCI_UHCI_DEVICEID_VT83C572 0x30381106ul
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static const char *uhci_device_vt83c572 = "VIA 83C572 USB Host Controller";
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static const char *uhci_device_generic = "UHCI (generic) USB Controller";
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#define PCI_UHCI_BASE_REG 0x20
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static const char *
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uhci_pci_match(device_t dev)
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{
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u_int32_t device_id = pci_get_devid(dev);
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if (device_id == PCI_UHCI_DEVICEID_PIIX3) {
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return (uhci_device_piix3);
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} else if (device_id == PCI_UHCI_DEVICEID_PIIX4) {
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return (uhci_device_piix4);
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} else if (device_id == PCI_UHCI_DEVICEID_VT83C572) {
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return (uhci_device_vt83c572);
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} else {
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if ( pci_get_class(dev) == PCIC_SERIALBUS
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&& pci_get_subclass(dev) == PCIS_SERIALBUS_USB
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&& pci_get_progif(dev) == PCI_INTERFACE_UHCI) {
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return (uhci_device_generic);
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}
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}
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return NULL; /* dunno... */
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}
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static int
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uhci_pci_probe(device_t dev)
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{
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const char *desc = uhci_pci_match(dev);
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if (desc) {
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device_set_desc(dev, desc);
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return 0;
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} else {
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return ENXIO;
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}
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}
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static int
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uhci_pci_attach(device_t dev)
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{
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int unit = device_get_unit(dev);
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int legsup;
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char *typestr;
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usbd_status err;
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device_t usbus;
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uhci_softc_t *sc = device_get_softc(dev);
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int rid;
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struct resource *res;
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void *ih;
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int error;
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rid = PCI_UHCI_BASE_REG;
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res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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0, ~0, 1, RF_ACTIVE);
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if (!res) {
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device_printf(dev, "could not map ports\n");
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return ENXIO;
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}
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sc->iot = rman_get_bustag(res);
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sc->ioh = rman_get_bushandle(res);
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bus_space_write_2(sc->iot, sc->ioh, UHCI_INTR, 0); /* disable interrupts */
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rid = 0;
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res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
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RF_SHAREABLE | RF_ACTIVE);
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if (res == NULL) {
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device_printf(dev, "could not allocate irq\n");
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return ENOMEM;
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}
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error = bus_setup_intr(dev, res, (driver_intr_t *) uhci_intr, sc, &ih);
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if (error) {
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device_printf(dev, "could not setup irq\n");
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return error;
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}
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usbus = device_add_child(dev, "usb", -1, sc);
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if (!usbus) {
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printf("usb%d: could not add USB device\n", unit);
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return ENOMEM;
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}
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switch (pci_get_devid(dev)) {
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case PCI_UHCI_DEVICEID_PIIX3:
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device_set_desc(usbus, uhci_device_piix3);
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sprintf(sc->sc_vendor, "Intel");
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break;
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case PCI_UHCI_DEVICEID_PIIX4:
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device_set_desc(usbus, uhci_device_piix4);
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sprintf(sc->sc_vendor, "Intel");
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break;
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case PCI_UHCI_DEVICEID_VT83C572:
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device_set_desc(usbus, uhci_device_vt83c572);
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sprintf(sc->sc_vendor, "VIA");
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break;
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default:
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printf("(New UHCI DeviceId=0x%08x)\n", pci_get_devid(dev));
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device_set_desc(usbus, uhci_device_generic);
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sprintf(sc->sc_vendor, "(0x%08x)", pci_get_devid(dev));
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}
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if (bootverbose) {
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switch(pci_read_config(dev, PCI_USBREV, 4) & PCI_USBREV_MASK) {
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case PCI_USBREV_PRE_1_0:
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typestr = "pre 1.0";
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break;
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case PCI_USBREV_1_0:
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typestr = "1.0";
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break;
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default:
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typestr = "unknown";
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break;
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}
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printf("uhci%d: USB version %s, chip rev. %d\n", unit, typestr,
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pci_get_revid(dev));
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}
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legsup = pci_read_config(dev, PCI_LEGSUP, 4);
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if ( !(legsup & PCI_LEGSUP_USBPIRQDEN) ) {
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#if ! (defined(USBVERBOSE) || defined(USB_DEBUG))
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if (bootverbose)
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#endif
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printf("uhci%d: PIRQD enable not set\n", unit);
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legsup |= PCI_LEGSUP_USBPIRQDEN;
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pci_write_config(dev, PCI_LEGSUP, legsup, 4);
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}
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sc->sc_bus.bdev = usbus;
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err = uhci_init(sc);
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if (err != USBD_NORMAL_COMPLETION) {
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printf("uhci%d: init failed, error=%d\n", unit, err);
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device_delete_child(dev, usbus);
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}
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return device_probe_and_attach(sc->sc_bus.bdev);
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}
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static device_method_t uhci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, uhci_pci_probe),
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DEVMETHOD(device_attach, uhci_pci_attach),
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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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{ 0, 0 }
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};
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static driver_t uhci_driver = {
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"uhci",
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uhci_methods,
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DRIVER_TYPE_BIO,
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sizeof(uhci_softc_t),
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};
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static devclass_t uhci_devclass;
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DRIVER_MODULE(uhci, pci, uhci_driver, uhci_devclass, 0, 0);
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