freebsd-skq/sys/pci/uhci_pci.c
n_hibma d0fd416b57 Move the warning on wrong IRQ values to the right place, before any
resource allocation is attempted.

It will present the user with a message that he has to switch on USB
support in his BIOS.
2000-02-20 14:22:44 +00:00

325 lines
9.2 KiB
C

/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (augustss@carlstedt.se) 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*
* $FreeBSD$
*/
/* Universal Host Controller Interface
*
* UHCI spec: http://www.intel.com/
*/
/* The low level controller code for UHCI has been split into
* PCI probes and UHCI specific code. This was done to facilitate the
* sharing of code between *BSD's
*/
#include "opt_bus.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/proc.h>
#include <sys/queue.h>
#if defined(__FreeBSD__)
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#endif
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>
#include <dev/usb/uhcireg.h>
#include <dev/usb/uhcivar.h>
#define PCI_UHCI_VENDORID_INTEL 0x8086
#define PCI_UHCI_VENDORID_VIA 0x1106
#define PCI_UHCI_DEVICEID_PIIX3 0x70208086
static const char *uhci_device_piix3 = "Intel 82371SB (PIIX3) USB controller";
#define PCI_UHCI_DEVICEID_PIIX4 0x71128086
#define PCI_UHCI_DEVICEID_PIIX4E 0x71128086 /* no separate stepping */
static const char *uhci_device_piix4 = "Intel 82371AB/EB (PIIX4) USB controller";
#define PCI_UHCI_DEVICEID_ICH 0x24128086
static const char *uhci_device_ich = "Intel 82801AA (ICH) USB controller";
#define PCI_UHCI_DEVICEID_ICH0 0x24228086
static const char *uhci_device_ich0 = "Intel 82801AB (ICH0) USB controller";
#define PCI_UHCI_DEVICEID_VT83C572 0x30381106
static const char *uhci_device_vt83c572 = "VIA 83C572 USB controller";
static const char *uhci_device_generic = "UHCI (generic) USB controller";
#define PCI_UHCI_BASE_REG 0x20
static int
uhci_pci_suspend(device_t self)
{
uhci_softc_t *sc = device_get_softc(self);
int err;
err = bus_generic_suspend(self);
if (err)
return err;
uhci_power(PWR_SUSPEND, sc);
return 0;
}
static int
uhci_pci_resume(device_t self)
{
uhci_softc_t *sc = device_get_softc(self);
uhci_power(PWR_RESUME, sc);
bus_generic_resume(self);
return 0;
}
static const char *
uhci_pci_match(device_t self)
{
u_int32_t device_id = pci_get_devid(self);
if (device_id == PCI_UHCI_DEVICEID_PIIX3) {
return (uhci_device_piix3);
} else if (device_id == PCI_UHCI_DEVICEID_PIIX4) {
return (uhci_device_piix4);
} else if (device_id == PCI_UHCI_DEVICEID_ICH) {
return (uhci_device_ich);
} else if (device_id == PCI_UHCI_DEVICEID_ICH0) {
return (uhci_device_ich0);
} else if (device_id == PCI_UHCI_DEVICEID_VT83C572) {
return (uhci_device_vt83c572);
} else {
if ( pci_get_class(self) == PCIC_SERIALBUS
&& pci_get_subclass(self) == PCIS_SERIALBUS_USB
&& pci_get_progif(self) == PCI_INTERFACE_UHCI) {
return (uhci_device_generic);
}
}
return NULL; /* dunno... */
}
static int
uhci_pci_probe(device_t self)
{
const char *desc = uhci_pci_match(self);
if (desc) {
device_set_desc(self, desc);
return 0;
} else {
return ENXIO;
}
}
static int
uhci_pci_attach(device_t self)
{
uhci_softc_t *sc = device_get_softc(self);
device_t parent = device_get_parent(self);
int rid;
void *ih;
struct resource *io_res, *irq_res;
int intr;
int err;
/* For the moment, put in a message stating what is wrong */
intr = pci_read_config(self, PCIR_INTLINE, 1);
if (intr == 0 || intr == 255) {
device_printf(self, "Invalid irq %d\n", intr);
device_printf(self, "Please switch on USB support and switch PNP-OS to 'No' in BIOS\n");
return ENXIO;
}
rid = PCI_UHCI_BASE_REG;
io_res = bus_alloc_resource(self, SYS_RES_IOPORT, &rid,
0, ~0, 1, RF_ACTIVE);
if (!io_res) {
device_printf(self, "could not map ports\n");
return ENXIO;
}
sc->iot = rman_get_bustag(io_res);
sc->ioh = rman_get_bushandle(io_res);
/* disable interrupts */
bus_space_write_2(sc->iot, sc->ioh, UHCI_INTR, 0);
rid = 0;
irq_res = bus_alloc_resource(self, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (irq_res == NULL) {
device_printf(self, "could not allocate irq\n");
err = ENOMEM;
goto bad1;
}
sc->sc_bus.bdev = device_add_child(self, "usb", -1);
if (!sc->sc_bus.bdev) {
device_printf(self, "could not add USB device\n");
err = ENOMEM;
goto bad2;
}
device_set_ivars(sc->sc_bus.bdev, sc);
switch (pci_get_devid(self)) {
case PCI_UHCI_DEVICEID_PIIX3:
device_set_desc(sc->sc_bus.bdev, uhci_device_piix3);
sprintf(sc->sc_vendor, "Intel");
break;
case PCI_UHCI_DEVICEID_PIIX4:
device_set_desc(sc->sc_bus.bdev, uhci_device_piix4);
sprintf(sc->sc_vendor, "Intel");
break;
case PCI_UHCI_DEVICEID_ICH:
device_set_desc(sc->sc_bus.bdev, uhci_device_ich);
sprintf(sc->sc_vendor, "Intel");
break;
case PCI_UHCI_DEVICEID_ICH0:
device_set_desc(sc->sc_bus.bdev, uhci_device_ich0);
sprintf(sc->sc_vendor, "Intel");
break;
case PCI_UHCI_DEVICEID_VT83C572:
device_set_desc(sc->sc_bus.bdev, uhci_device_vt83c572);
sprintf(sc->sc_vendor, "VIA");
break;
default:
device_printf(self, "(New UHCI DeviceId=0x%08x)\n",
pci_get_devid(self));
device_set_desc(sc->sc_bus.bdev, uhci_device_generic);
sprintf(sc->sc_vendor, "(0x%08x)", pci_get_devid(self));
}
switch(pci_read_config(self, PCI_USBREV, 4) & PCI_USBREV_MASK) {
case PCI_USBREV_PRE_1_0:
sc->sc_bus.usbrev = USBREV_PRE_1_0;
break;
case PCI_USBREV_1_0:
sc->sc_bus.usbrev = USBREV_1_0;
break;
default:
sc->sc_bus.usbrev = USBREV_UNKNOWN;
break;
}
err = BUS_SETUP_INTR(parent, self, irq_res, INTR_TYPE_BIO,
(driver_intr_t *) uhci_intr, sc, &ih);
if (err) {
device_printf(self, "could not setup irq, %d\n", err);
goto bad3;
}
/* Set the PIRQD enable bit and switch off all the others. We don't
* want legacy support to interfere with us
* XXX Does this also mean that the BIOS won't touch the keyboard
* anymore if it is connected to the ports of the root hub?
*/
#ifdef UHCI_DEBUG
if (pci_read_config(self, PCI_LEGSUP, 4) != PCI_LEGSUP_USBPIRQDEN)
device_printf(self, "LegSup = 0x%08x\n",
pci_read_config(self, PCI_LEGSUP, 4));
#endif
pci_write_config(self, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN, 4);
err = uhci_init(sc);
if (!err)
err = device_probe_and_attach(sc->sc_bus.bdev);
if (err) {
device_printf(self, "USB init failed\n");
err = EIO;
goto bad4;
}
return 0;
bad4:
/* disable interrupts that might have been switched on
* in uhci_init.
*/
bus_space_write_2(sc->iot, sc->ioh, UHCI_INTR, 0);
err = BUS_TEARDOWN_INTR(parent, self, irq_res, ih);
if (err)
/* XXX or should we panic? */
device_printf(self, "could not tear down irq, %d\n",
err);
bad3:
device_delete_child(self, sc->sc_bus.bdev);
bad2:
bus_release_resource(self, SYS_RES_IRQ, 0, irq_res);
bad1:
bus_release_resource(self, SYS_RES_IOPORT, PCI_UHCI_BASE_REG, io_res);
return err;
}
static device_method_t uhci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uhci_pci_probe),
DEVMETHOD(device_attach, uhci_pci_attach),
DEVMETHOD(device_suspend, uhci_pci_suspend),
DEVMETHOD(device_resume, uhci_pci_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
{ 0, 0 }
};
static driver_t uhci_driver = {
"uhci",
uhci_methods,
sizeof(uhci_softc_t),
};
static devclass_t uhci_devclass;
DRIVER_MODULE(uhci, pci, uhci_driver, uhci_devclass, 0, 0);