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NetBSD/sys/dev/usb/usb_subr.c

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/* $NetBSD: usb_subr.c,v 1.2 1998/07/16 12:55:19 is Exp $ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Author: Lennart Augustsson <augustss@carlstedt.se>
* 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/select.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/usb_quirks.h>
#include "opt_usbverbose.h"
#ifdef USB_DEBUG
#define DPRINTF(x) if (usbdebug) printf x
#define DPRINTFN(n,x) if (usbdebug>(n)) printf x
extern int usbdebug;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
char *usbd_get_string __P((usbd_device_handle, int, char *));
usbd_status usbd_get_desc __P((usbd_device_handle dev, int type,
int index, int len, void *desc));
int usbd_getnewaddr __P((usbd_bus_handle bus));
int usbd_print __P((void *aux, const char *pnp));
int usbd_submatch __P((struct device *, struct cfdata *cf, void *));
usb_interface_descriptor_t *usbd_find_idesc __P((usb_config_descriptor_t *cd,
int ino, int ano));
usbd_status usbd_fill_iface_data __P((usbd_device_handle dev, int i, int a));
void usbd_free_iface_data __P((usbd_device_handle dev, int ifcno));
void usbd_kill_pipe __P((usbd_pipe_handle));
#ifdef USBVERBOSE
typedef u_int16_t usb_vendor_id_t;
typedef u_int16_t usb_product_id_t;
/*
* Descriptions of of known vendors and devices ("products").
*/
struct usb_knowndev {
usb_vendor_id_t vendor;
usb_product_id_t product;
int flags;
char *vendorname, *productname;
};
#define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */
#include <dev/usb/usbdevs_data.h>
#endif /* USBVERBOSE */
char *
usbd_get_string(dev, si, buf)
usbd_device_handle dev;
int si;
char *buf;
{
int swap = dev->quirks->uq_flags & UQ_SWAP_UNICODE;
usb_device_request_t req;
usb_string_descriptor_t us;
char *s;
int i, n;
u_int16_t c;
usbd_status r;
if (si == 0)
return 0;
req.bmRequestType = UT_READ_DEVICE;
req.bRequest = UR_GET_DESCRIPTOR;
USETW2(req.wValue, UDESC_STRING, si);
USETW(req.wIndex, 0);
USETW(req.wLength, 1); /* only size byte first */
r = usbd_do_request(dev, &req, &us);
if (r != USBD_NORMAL_COMPLETION)
return 0;
USETW(req.wLength, us.bLength); /* the whole string */
r = usbd_do_request(dev, &req, &us);
if (r != USBD_NORMAL_COMPLETION)
return 0;
s = buf;
n = us.bLength / 2 - 1;
for (i = 0; i < n; i++) {
c = UGETW(us.bString[i]);
/* Convert from Unicode, handle buggy strings. */
if ((c & 0xff00) == 0)
*s++ = c;
else if ((c & 0x00ff) == 0 && swap)
*s++ = c >> 8;
else
*s++ = '?';
}
*s++ = 0;
return buf;
}
void
usbd_devinfo_vp(dev, v, p)
usbd_device_handle dev;
char *v, *p;
{
usb_device_descriptor_t *udd = &dev->ddesc;
char *vendor = 0, *product = 0;
#ifdef USBVERBOSE
struct usb_knowndev *kdp;
#endif
vendor = usbd_get_string(dev, udd->iManufacturer, v);
product = usbd_get_string(dev, udd->iProduct, p);
#ifdef USBVERBOSE
if (!vendor) {
for(kdp = usb_knowndevs;
kdp->vendorname != NULL;
kdp++) {
if (kdp->vendor == UGETW(udd->idVendor) &&
(kdp->product == UGETW(udd->idProduct) ||
(kdp->flags & USB_KNOWNDEV_NOPROD) != 0))
break;
}
if (kdp->vendorname == NULL)
vendor = product = NULL;
else {
vendor = kdp->vendorname;
product = (kdp->flags & USB_KNOWNDEV_NOPROD) == 0 ?
kdp->productname : NULL;
}
}
#endif
if (vendor)
strcpy(v, vendor);
else
sprintf(v, "vendor 0x%04x", UGETW(udd->idVendor));
if (product)
strcpy(p, product);
else
sprintf(p, "product 0x%04x", UGETW(udd->idProduct));
}
int
usbd_printBCD(cp, bcd)
char *cp;
int bcd;
{
return (sprintf(cp, "%x.%02x", bcd >> 8, bcd & 0xff));
}
void
usbd_devinfo(dev, showclass, cp)
usbd_device_handle dev;
int showclass;
char *cp;
{
usb_device_descriptor_t *udd = &dev->ddesc;
char vendor[USB_MAX_STRING_LEN];
char product[USB_MAX_STRING_LEN];
int bcdDevice, bcdUSB;
usbd_devinfo_vp(dev, vendor, product);
cp += sprintf(cp, "%s", vendor);
cp += sprintf(cp, " %s", product);
if (showclass)
cp += sprintf(cp, " (class %d/%d)",
udd->bDeviceClass, udd->bDeviceSubClass);
bcdUSB = UGETW(udd->bcdUSB);
bcdDevice = UGETW(udd->bcdDevice);
cp += sprintf(cp, " (rev ");
cp += usbd_printBCD(cp, bcdUSB);
*cp++ = '/';
cp += usbd_printBCD(cp, bcdDevice);
*cp++ = ')';
cp += sprintf(cp, " (addr %d)", dev->address);
}
/* Delay for a certain number of ms */
void
usbd_delay_ms(ms)
int ms;
{
/* Wait at least two clock ticks so we know the time has passed. */
if (usbd_use_polling)
delay((ms+1) * 1000);
else
tsleep(&ms, PRIBIO, "usbdly", (ms*hz+999)/1000 + 1);
}
usbd_status
usbd_reset_port(dev, port, ps)
usbd_device_handle dev;
int port;
usb_port_status_t *ps;
{
usb_device_request_t req;
usbd_status r;
int n;
req.bmRequestType = UT_WRITE_CLASS_OTHER;
req.bRequest = UR_SET_FEATURE;
USETW(req.wValue, UHF_PORT_RESET);
USETW(req.wIndex, port);
USETW(req.wLength, 0);
r = usbd_do_request(dev, &req, 0);
DPRINTFN(1,("usbd_reset_port: port %d reset done, error=%d\n",
port, r));
if (r != USBD_NORMAL_COMPLETION)
return (r);
n = 10;
do {
/* Wait for device to recover from reset. */
usbd_delay_ms(USB_PORT_RESET_DELAY);
r = usbd_get_port_status(dev, port, ps);
if (r != USBD_NORMAL_COMPLETION) {
DPRINTF(("usbd_reset_port: get status failed %d\n",r));
return (r);
}
} while ((UGETW(ps->wPortChange) & UPS_C_PORT_RESET) == 0 && --n > 0);
if (n == 0) {
printf("usbd_reset_port: timeout\n");
return (USBD_IOERROR);
}
r = usbd_clear_port_feature(dev, port, UHF_C_PORT_RESET);
#ifdef USB_DEBUG
if (r != USBD_NORMAL_COMPLETION)
DPRINTF(("usbd_reset_port: clear port feature failed %d\n",r));
#endif
return (r);
}
usb_interface_descriptor_t *
usbd_find_idesc(cd, ino, ano)
usb_config_descriptor_t *cd;
int ino;
int ano;
{
char *p = (char *)cd;
char *end = p + UGETW(cd->wTotalLength);
usb_interface_descriptor_t *d;
for (; p < end; p += d->bLength) {
d = (usb_interface_descriptor_t *)p;
if (p + d->bLength <= end &&
d->bDescriptorType == UDESC_INTERFACE &&
d->bInterfaceNumber == ino && d->bAlternateSetting == ano)
return (d);
}
return (0);
}
usbd_status
usbd_fill_iface_data(dev, ino, ano)
usbd_device_handle dev;
int ino;
int ano;
{
usbd_interface_handle ifc = &dev->ifaces[ino];
usb_endpoint_descriptor_t *ed;
char *p, *end;
int endpt, nendpt;
usbd_status r;
DPRINTFN(5,("usbd_fill_iface_data: ino=%d ano=%d\n", ino, ano));
ifc->device = dev;
ifc->state = USBD_INTERFACE_ACTIVE;
ifc->idesc = usbd_find_idesc(dev->cdesc, ino, ano);
if (ifc->idesc == 0)
return (USBD_INVAL);
nendpt = ifc->idesc->bNumEndpoints;
DPRINTFN(10,("usbd_fill_iface_data: found idesc n=%d\n", nendpt));
if (nendpt != 0) {
ifc->endpoints = malloc(nendpt * sizeof(struct usbd_endpoint),
M_USB, M_NOWAIT);
if (ifc->endpoints == 0)
return (USBD_NOMEM);
} else
ifc->endpoints = 0;
ifc->priv = 0;
p = (char *)ifc->idesc + ifc->idesc->bLength;
end = (char *)dev->cdesc + UGETW(dev->cdesc->wTotalLength);
for (endpt = 0; endpt < nendpt; endpt++) {
DPRINTFN(10,("usbd_fill_iface_data: endpt=%d\n", endpt));
for (; p < end; p += ed->bLength) {
ed = (usb_endpoint_descriptor_t *)p;
DPRINTFN(10,("usbd_fill_iface_data: p=%p end=%p len=%d type=%d\n",
p, end, ed->bLength, ed->bDescriptorType));
if (p + ed->bLength <= end &&
ed->bDescriptorType == UDESC_ENDPOINT)
goto found;
if (ed->bDescriptorType == UDESC_INTERFACE)
break;
}
r = USBD_INVAL;
goto bad;
found:
ifc->endpoints[endpt].edesc = ed;
ifc->endpoints[endpt].state = USBD_ENDPOINT_ACTIVE;
ifc->endpoints[endpt].refcnt = 0;
ifc->endpoints[endpt].toggle = 0;
}
LIST_INIT(&ifc->pipes);
return (USBD_NORMAL_COMPLETION);
bad:
free(ifc->endpoints, M_USB);
return (r);
}
void
usbd_free_iface_data(dev, ifcno)
usbd_device_handle dev;
int ifcno;
{
usbd_interface_handle ifc = &dev->ifaces[ifcno];
if (ifc->endpoints)
free(ifc->endpoints, M_USB);
}
usbd_status
usbd_set_config_no(dev, no, confp)
usbd_device_handle dev;
int no;
int *confp;
{
usb_status_t ds;
usb_hub_status_t hs;
usb_config_descriptor_t cd, *cdp;
usbd_status r;
int ifcno, nifc, len, selfpowered, power;
DPRINTFN(5, ("usbd_set_config_no: dev=%p no=%d\n", dev, no));
/* XXX check that all interfaces are idle */
if (dev->config != 0) {
DPRINTF(("usbd_set_config_no: free old config\n"));
/* Free all configuration data structures. */
nifc = dev->cdesc->bNumInterface;
for (ifcno = 0; ifcno < nifc; ifcno++)
usbd_free_iface_data(dev, ifcno);
free(dev->ifaces, M_USB);
free(dev->cdesc, M_USB);
dev->ifaces = 0;
dev->cdesc = 0;
dev->config = 0;
dev->state = USBD_DEVICE_ADDRESSED;
}
/* Figure out what config number to use. */
r = usbd_get_config_desc(dev, no, &cd);
if (r != USBD_NORMAL_COMPLETION)
return (r);
len = UGETW(cd.wTotalLength);
cdp = malloc(len, M_USB, M_NOWAIT);
if (cdp == 0)
return (USBD_NOMEM);
r = usbd_get_desc(dev, UDESC_CONFIG, no, len, cdp);
if (r != USBD_NORMAL_COMPLETION)
goto bad;
selfpowered = 0;
if (cdp->bmAttributes & UC_SELF_POWERED) {
/* May be self powered. */
if (cdp->bmAttributes & UC_BUS_POWERED) {
/* Must ask device. */
if (dev->quirks->uq_flags & UQ_HUB_POWER) {
/* Buggy hub, use hub descriptor. */
r = usbd_get_hub_status(dev, &hs);
if (r == USBD_NORMAL_COMPLETION &&
!(UGETW(hs.wHubStatus) & UHS_LOCAL_POWER))
selfpowered = 1;
} else {
r = usbd_get_device_status(dev, &ds);
if (r == USBD_NORMAL_COMPLETION &&
(UGETW(ds.wStatus) & UDS_SELF_POWERED))
selfpowered = 1;
}
DPRINTF(("usbd_set_config_no: status=0x%04x, error=%d\n",
UGETW(ds.wStatus), r));
} else
selfpowered = 1;
}
DPRINTF(("usbd_set_config_no: (addr %d) attr=0x%02x, selfpowered=%d, power=%d, powerquirk=%x\n",
dev->address, cdp->bmAttributes,
selfpowered, cdp->bMaxPower * 2,
dev->quirks->uq_flags & UQ_HUB_POWER));
#ifdef USB_DEBUG
if (!dev->powersrc) {
printf("usbd_set_config_no: No power source?\n");
return (EIO);
}
#endif
power = cdp->bMaxPower * 2;
if (power > dev->powersrc->power) {
/* XXX print nicer message. */
printf("usb: device addr %d (config %d) exceeds power budget, %d mA > %d mA\n",
dev->address, cdp->bConfigurationValue,
power, dev->powersrc->power);
r = USBD_NO_POWER;
goto bad;
}
dev->power = power;
dev->self_powered = selfpowered;
if (confp)
*confp = cdp->bConfigurationValue;
r = usbd_set_config(dev, cdp->bConfigurationValue);
if (r != USBD_NORMAL_COMPLETION) {
DPRINTF(("usbd_set_config_no: setting config=%d failed, error=%d\n",
cdp->bConfigurationValue, r));
goto bad;
}
DPRINTF(("usbd_set_config_no: setting new config %d\n",
cdp->bConfigurationValue));
nifc = cdp->bNumInterface;
dev->ifaces = malloc(nifc * sizeof(struct usbd_interface),
M_USB, M_NOWAIT);
if (dev->ifaces == 0) {
r = USBD_NOMEM;
goto bad;
}
dev->cdesc = cdp;
dev->config = cdp->bConfigurationValue;
dev->state = USBD_DEVICE_CONFIGURED;
for (ifcno = 0; ifcno < nifc; ifcno++) {
r = usbd_fill_iface_data(dev, ifcno, 0);
if (r != USBD_NORMAL_COMPLETION) {
while (--ifcno >= 0)
usbd_free_iface_data(dev, ifcno);
goto bad;
}
}
return (USBD_NORMAL_COMPLETION);
bad:
free(cdp, M_USB);
return (r);
}
/* XXX add function for alternate settings */
usbd_status
usbd_setup_pipe(dev, iface, ep, pipe)
usbd_device_handle dev;
usbd_interface_handle iface;
struct usbd_endpoint *ep;
usbd_pipe_handle *pipe;
{
usbd_pipe_handle p;
usbd_status r;
DPRINTFN(1,("usbd_setup_pipe: dev=%p iface=%p ep=%p pipe=%p\n",
dev, iface, ep, pipe));
p = malloc(dev->bus->pipe_size, M_USB, M_NOWAIT);
if (p == 0)
return (USBD_NOMEM);
p->device = dev;
p->iface = iface;
p->state = USBD_PIPE_ACTIVE;
p->endpoint = ep;
ep->refcnt++;
p->refcnt = 1;
p->intrreqh = 0;
p->running = 0;
SIMPLEQ_INIT(&p->queue);
r = dev->bus->open_pipe(p);
if (r != USBD_NORMAL_COMPLETION) {
DPRINTF(("usbd_setup_pipe: endpoint=%d failed, error=%d\n",
ep->edesc->bEndpointAddress, r));
free(p, M_USB);
return (r);
}
*pipe = p;
return (USBD_NORMAL_COMPLETION);
}
/* Abort the device control pipe. */
void
usbd_kill_pipe(pipe)
usbd_pipe_handle pipe;
{
pipe->methods->close(pipe);
pipe->endpoint->refcnt--;
free(pipe, M_USB);
}
int
usbd_getnewaddr(bus)
usbd_bus_handle bus;
{
int i;
for (i = 1; i < USB_MAX_DEVICES; i++)
if (bus->devices[i] == 0)
return (i);
return (-1);
}
/*
* Called when a new device has been put in the powered state,
* but not yet in the addressed state.
* Get initial descriptor, set the address, get full descriptor,
* and attach a driver.
*/
usbd_status
usbd_new_device(parent, bus, depth, lowspeed, port, up)
struct device *parent;
usbd_bus_handle bus;
int depth;
int lowspeed;
int port;
struct usbd_port *up;
{
usbd_device_handle dev;
usb_device_descriptor_t *d;
usbd_status r;
struct usb_attach_arg uaa;
int addr;
int found, i;
DPRINTF(("usbd_new_device bus=%p depth=%d lowspeed=%d\n",
bus, depth, lowspeed));
addr = usbd_getnewaddr(bus);
if (addr < 0) {
printf("%s: No free USB addresses, new device ignored.\n",
bus->bdev.dv_xname);
return (USBD_NO_ADDR);
}
dev = malloc(sizeof *dev, M_USB, M_NOWAIT);
if (dev == 0)
return (USBD_NOMEM);
memset(dev, 0, sizeof(*dev));
dev->bus = bus;
/* Set up default endpoint handle. */
dev->def_ep.edesc = &dev->def_ep_desc;
dev->def_ep.state = USBD_ENDPOINT_ACTIVE;
dev->def_ep.refcnt = 0;
dev->def_ep.toggle = 0; /* XXX */
/* Set up default endpoint descriptor. */
dev->def_ep_desc.bLength = USB_ENDPOINT_DESCRIPTOR_SIZE;
dev->def_ep_desc.bDescriptorType = UDESC_ENDPOINT;
dev->def_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT;
dev->def_ep_desc.bmAttributes = UE_CONTROL;
USETW(dev->def_ep_desc.wMaxPacketSize, USB_MAX_IPACKET);
dev->def_ep_desc.bInterval = 0;
dev->state = USBD_DEVICE_DEFAULT;
dev->quirks = &usbd_no_quirk;
dev->address = USB_START_ADDR;
dev->ddesc.bMaxPacketSize = USB_MAX_IPACKET;
dev->lowspeed = lowspeed != 0;
dev->depth = depth;
dev->powersrc = up;
/* Establish the the default pipe. */
r = usbd_setup_pipe(dev, 0, &dev->def_ep, &dev->default_pipe);
if (r != USBD_NORMAL_COMPLETION)
goto bad1;
up->device = dev;
d = &dev->ddesc;
/* Get the first 8 bytes of the device descriptor. */
r = usbd_get_desc(dev, UDESC_DEVICE, 0, USB_MAX_IPACKET, d);
if (r != USBD_NORMAL_COMPLETION) {
DPRINTFN(-1, ("usbd_new_device: addr=%d, getting first desc failed\n", addr));
goto bad;
}
DPRINTF(("usbd_new_device: adding unit addr=%d, rev=%02x, class=%d, subclass=%d, protocol=%d, maxpacket=%d, ls=%d\n",
addr, UGETW(d->bcdUSB), d->bDeviceClass, d->bDeviceSubClass,
d->bDeviceProtocol, d->bMaxPacketSize, dev->lowspeed));
/* Get the full device descriptor. */
r = usbd_get_device_desc(dev, d);
if (r != USBD_NORMAL_COMPLETION) {
DPRINTFN(-1, ("usbd_new_device: addr=%d, getting full desc failed\n", addr));
goto bad;
}
/* Figure out what's wrong with this device. */
dev->quirks = usbd_find_quirk(d);
/* Set the address */
r = usbd_set_address(dev, addr);
if (r != USBD_NORMAL_COMPLETION) {
DPRINTFN(-1,("usb_new_device: set address %d failed\n",addr));
r = USBD_SET_ADDR_FAILED;
goto bad;
}
dev->address = addr; /* New device address now */
dev->state = USBD_DEVICE_ADDRESSED;
bus->devices[addr] = dev;
/* Assume 100mA bus powered for now. Changed when configured. */
dev->power = USB_MIN_POWER;
dev->self_powered = 0;
DPRINTF(("usbd_new_device: new dev (addr %d), dev=%p, parent=%p\n",
addr, dev, parent));
uaa.device = dev;
uaa.iface = 0;
uaa.usegeneric = 0;
uaa.port = port;
/* First try with device specific drivers. */
if (config_found_sm(parent, &uaa, usbd_print, usbd_submatch) != 0)
return (USBD_NORMAL_COMPLETION);
DPRINTF(("usbd_new_device: no device driver found\n"));
/* Next try with interface drivers. */
/* XXX should we try all configurations? */
r = usbd_set_config_no(dev, 0, 0);
if (r != USBD_NORMAL_COMPLETION) {
printf("%s: set config at addr %d failed, error=%d\n",
parent->dv_xname, addr, r);
goto bad;
}
for (found = i = 0; i < dev->cdesc->bNumInterface; i++) {
uaa.iface = &dev->ifaces[i];
if (config_found_sm(parent, &uaa, usbd_print, usbd_submatch))
found++;
}
if (found != 0)
return (USBD_NORMAL_COMPLETION);
DPRINTF(("usbd_new_device: no interface drivers found\n"));
/* Finally try the generic driver. */
uaa.iface = 0;
uaa.usegeneric = 1;
if (config_found_sm(parent, &uaa, usbd_print, usbd_submatch) != 0)
return (USBD_NORMAL_COMPLETION);
DPRINTF(("usbd_new_device: generic attach failed\n"));
return (USBD_NORMAL_COMPLETION);
bad:
usbd_kill_pipe(dev->default_pipe);
bad1:
up->device = 0;
bus->devices[addr] = 0;
free(dev, M_USB);
return (r);
}
int
usbd_print(aux, pnp)
void *aux;
const char *pnp;
{
struct usb_attach_arg *uaa = aux;
char devinfo[1024];
DPRINTFN(15, ("usbd_print dev=%p\n", uaa->device));
if (pnp) {
if (!uaa->usegeneric)
return (QUIET);
usbd_devinfo(uaa->device, 1, devinfo);
printf("%s at %s", devinfo, pnp);
}
if (uaa->port != 0)
printf(" port %d", uaa->port);
return (UNCONF);
}
int
usbd_submatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct usb_attach_arg *uaa = aux;
if (uaa->port != 0 &&
cf->uhubcf_port != UHUB_UNK_PORT &&
cf->uhubcf_port != uaa->port)
return 0;
return ((*cf->cf_attach->ca_match)(parent, cf, aux));
}
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