304 lines
8.2 KiB
C
304 lines
8.2 KiB
C
/*
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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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* $FreeBSD$
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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/proc.h>
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#include <sys/queue.h>
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#if defined(__FreeBSD__)
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#endif
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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 0x70208086
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static const char *uhci_device_piix3 = "Intel 82371SB (PIIX3) USB controller";
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#define PCI_UHCI_DEVICEID_PIIX4 0x71128086
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#define PCI_UHCI_DEVICEID_PIIX4E 0x71128086 /* no separate stepping */
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static const char *uhci_device_piix4 = "Intel 82371AB/EB (PIIX4) USB controller";
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#define PCI_UHCI_DEVICEID_VT83C572 0x30381106
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static const char *uhci_device_vt83c572 = "VIA 83C572 USB 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 int
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uhci_pci_suspend(device_t self)
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{
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uhci_softc_t *sc = device_get_softc(self);
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bus_generic_suspend(self);
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return 0;
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}
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static int
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uhci_pci_resume(device_t self)
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{
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uhci_softc_t *sc = device_get_softc(self);
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#if 0
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uhci_reset(sc);
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#endif
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bus_generic_resume(self);
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return 0;
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}
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static const char *
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uhci_pci_match(device_t self)
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{
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u_int32_t device_id = pci_get_devid(self);
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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(self) == PCIC_SERIALBUS
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&& pci_get_subclass(self) == PCIS_SERIALBUS_USB
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&& pci_get_progif(self) == 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 self)
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{
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const char *desc = uhci_pci_match(self);
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if (desc) {
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device_set_desc(self, 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 self)
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{
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uhci_softc_t *sc = device_get_softc(self);
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device_t parent = device_get_parent(self);
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int rid;
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void *ih;
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struct resource *res;
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device_t usbus;
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char *typestr;
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int intr;
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int legsup;
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int err;
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rid = PCI_UHCI_BASE_REG;
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res = bus_alloc_resource(self, 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(self, "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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/* disable interrupts */
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bus_space_write_2(sc->iot, sc->ioh, UHCI_INTR, 0);
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rid = 0;
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res = bus_alloc_resource(self, 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(self, "could not allocate irq\n");
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return ENOMEM;
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}
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usbus = device_add_child(self, "usb", -1, sc);
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if (!usbus) {
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device_printf(self, "could not add USB device\n");
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return ENOMEM;
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}
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switch (pci_get_devid(self)) {
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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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device_printf(self, "(New UHCI DeviceId=0x%08x)\n",
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pci_get_devid(self));
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device_set_desc(usbus, uhci_device_generic);
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sprintf(sc->sc_vendor, "(0x%08x)", pci_get_devid(self));
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}
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if (bootverbose) {
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switch(pci_read_config(self, 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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device_printf(self, "USB version %s, chip rev. %d\n",
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typestr, pci_get_revid(self));
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}
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intr = pci_read_config(self, PCIR_INTLINE, 1);
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if (intr == 0 || intr == 255) {
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device_printf(self, "Invalid irq %d\n", intr);
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device_printf(self, "Please switch on USB support and switch PNP-OS to 'No' in BIOS\n");
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device_delete_child(self, usbus);
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return ENXIO;
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}
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err = BUS_SETUP_INTR(parent, self, res, INTR_TYPE_BIO,
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(driver_intr_t *) uhci_intr, sc, &ih);
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if (err) {
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device_printf(self, "could not setup irq, %d\n", err);
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device_delete_child(self, usbus);
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return err;
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}
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/* Verify that the PIRQD enable bit is set, some BIOS's don't do that */
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legsup = pci_read_config(self, PCI_LEGSUP, 4);
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if ( !(legsup & PCI_LEGSUP_USBPIRQDEN) ) {
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#ifndef USB_DEBUG
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if (bootverbose)
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#endif
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device_printf(self, "PIRQD enable not set\n");
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legsup |= PCI_LEGSUP_USBPIRQDEN;
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pci_write_config(self, 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)
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err = device_probe_and_attach(sc->sc_bus.bdev);
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if (err) {
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device_printf(self, "init failed\n");
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/* disable interrupts that might have been switched on
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* in uhci_init
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*/
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bus_space_write_2(sc->iot, sc->ioh, UHCI_INTR, 0);
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err = BUS_TEARDOWN_INTR(parent, self, res, ih);
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if (err)
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/* XXX or should we panic? */
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device_printf(self, "could not tear down irq, %d\n",
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err);
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device_delete_child(self, usbus);
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return EIO; /* XXX arbitrary value */
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}
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return 0;
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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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DEVMETHOD(device_suspend, uhci_pci_suspend),
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DEVMETHOD(device_resume, uhci_pci_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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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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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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