/
usb_subr.c
1460 lines (1291 loc) · 37.1 KB
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usb_subr.c
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/* $OpenBSD: usb_subr.c,v 1.135 2018/04/24 17:22:33 landry Exp $ */
/* $NetBSD: usb_subr.c,v 1.103 2003/01/10 11:19:13 augustss Exp $ */
/* $FreeBSD: src/sys/dev/usb/usb_subr.c,v 1.18 1999/11/17 22:33:47 n_hibma Exp $ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net) 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.
*
* 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/selinfo.h>
#include <sys/rwlock.h>
#include <machine/bus.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>
#ifdef USB_DEBUG
#define DPRINTF(x) do { if (usbdebug) printf x; } while (0)
#define DPRINTFN(n,x) do { if (usbdebug>(n)) printf x; } while (0)
extern int usbdebug;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
usbd_status usbd_set_config(struct usbd_device *, int);
void usbd_devinfo(struct usbd_device *, int, char *, size_t);
char *usbd_get_device_string(struct usbd_device *, uByte);
char *usbd_get_string(struct usbd_device *, int, char *, size_t);
int usbd_getnewaddr(struct usbd_bus *);
int usbd_print(void *, const char *);
void usbd_free_iface_data(struct usbd_device *, int);
usbd_status usbd_probe_and_attach(struct device *,
struct usbd_device *, int, int);
int usbd_printBCD(char *cp, size_t len, int bcd);
void usb_free_device(struct usbd_device *);
int usbd_parse_idesc(struct usbd_device *, struct usbd_interface *);
#ifdef USBVERBOSE
#include <dev/usb/usbdevs_data.h>
#endif /* USBVERBOSE */
const char * const usbd_error_strs[] = {
"NORMAL_COMPLETION",
"IN_PROGRESS",
"PENDING_REQUESTS",
"NOT_STARTED",
"INVAL",
"NOMEM",
"CANCELLED",
"BAD_ADDRESS",
"IN_USE",
"NO_ADDR",
"SET_ADDR_FAILED",
"NO_POWER",
"TOO_DEEP",
"IOERROR",
"NOT_CONFIGURED",
"TIMEOUT",
"SHORT_XFER",
"STALLED",
"INTERRUPTED",
"XXX",
};
const char *
usbd_errstr(usbd_status err)
{
static char buffer[5];
if (err < USBD_ERROR_MAX)
return (usbd_error_strs[err]);
else {
snprintf(buffer, sizeof(buffer), "%d", err);
return (buffer);
}
}
usbd_status
usbd_get_string_desc(struct usbd_device *dev, int sindex, int langid,
usb_string_descriptor_t *sdesc, int *sizep)
{
usb_device_request_t req;
usbd_status err;
int actlen;
req.bmRequestType = UT_READ_DEVICE;
req.bRequest = UR_GET_DESCRIPTOR;
USETW2(req.wValue, UDESC_STRING, sindex);
USETW(req.wIndex, langid);
USETW(req.wLength, 2); /* size and descriptor type first */
err = usbd_do_request_flags(dev, &req, sdesc, USBD_SHORT_XFER_OK,
&actlen, USBD_DEFAULT_TIMEOUT);
if (err)
return (err);
if (actlen < 2)
return (USBD_SHORT_XFER);
USETW(req.wLength, sdesc->bLength); /* the whole string */
err = usbd_do_request_flags(dev, &req, sdesc, USBD_SHORT_XFER_OK,
&actlen, USBD_DEFAULT_TIMEOUT);
if (err)
return (err);
if (actlen != sdesc->bLength) {
DPRINTFN(-1, ("usbd_get_string_desc: expected %d, got %d\n",
sdesc->bLength, actlen));
}
*sizep = actlen;
return (USBD_NORMAL_COMPLETION);
}
char *
usbd_get_string(struct usbd_device *dev, int si, char *buf, size_t buflen)
{
int swap = dev->quirks->uq_flags & UQ_SWAP_UNICODE;
usb_string_descriptor_t us;
char *s;
int i, n;
u_int16_t c;
usbd_status err;
int size;
if (si == 0)
return (0);
if (dev->quirks->uq_flags & UQ_NO_STRINGS)
return (0);
if (dev->langid == USBD_NOLANG) {
/* Set up default language */
err = usbd_get_string_desc(dev, USB_LANGUAGE_TABLE, 0, &us,
&size);
if (err || size < 4)
dev->langid = 0; /* Well, just pick English then */
else {
/* Pick the first language as the default. */
dev->langid = UGETW(us.bString[0]);
}
}
err = usbd_get_string_desc(dev, si, dev->langid, &us, &size);
if (err)
return (0);
s = buf;
n = size / 2 - 1;
for (i = 0; i < n && i < buflen ; 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++ = '?';
}
if (buflen > 0)
*s++ = 0;
return (buf);
}
static void
usbd_trim_spaces(char *p)
{
char *q, *e;
if (p == NULL)
return;
q = e = p;
while (*q == ' ') /* skip leading spaces */
q++;
while ((*p = *q++)) /* copy string */
if (*p++ != ' ') /* remember last non-space */
e = p;
*e = 0; /* kill trailing spaces */
}
char *
usbd_get_device_string(struct usbd_device *dev, uByte index)
{
char *buf;
buf = malloc(USB_MAX_STRING_LEN, M_USB, M_NOWAIT);
if (buf == NULL)
return (NULL);
if (usbd_get_string(dev, index, buf, USB_MAX_STRING_LEN) != NULL) {
usbd_trim_spaces(buf);
} else {
free(buf, M_USB, USB_MAX_STRING_LEN);
buf = NULL;
}
return (buf);
}
void
usbd_devinfo_vp(struct usbd_device *dev, char *v, size_t vl,
char *p, size_t pl, int usedev)
{
usb_device_descriptor_t *udd = &dev->ddesc;
char *vendor = NULL, *product = NULL;
#ifdef USBVERBOSE
const struct usb_known_vendor *ukv;
const struct usb_known_product *ukp;
#endif
if (dev == NULL) {
v[0] = p[0] = '\0';
return;
}
if (usedev) {
vendor = usbd_get_string(dev, udd->iManufacturer, v, vl);
usbd_trim_spaces(vendor);
product = usbd_get_string(dev, udd->iProduct, p, pl);
usbd_trim_spaces(product);
} else {
if (dev->vendor != NULL)
vendor = dev->vendor;
if (dev->product != NULL)
product = dev->product;
}
#ifdef USBVERBOSE
if (vendor == NULL || product == NULL) {
for (ukv = usb_known_vendors;
ukv->vendorname != NULL;
ukv++) {
if (ukv->vendor == UGETW(udd->idVendor)) {
vendor = ukv->vendorname;
break;
}
}
if (vendor != NULL) {
for (ukp = usb_known_products;
ukp->productname != NULL;
ukp++) {
if (ukp->vendor == UGETW(udd->idVendor) &&
(ukp->product == UGETW(udd->idProduct))) {
product = ukp->productname;
break;
}
}
}
}
#endif
if (v == vendor)
;
else if (vendor != NULL && *vendor)
strlcpy(v, vendor, vl);
else
snprintf(v, vl, "vendor 0x%04x", UGETW(udd->idVendor));
if (p == product)
;
else if (product != NULL && *product)
strlcpy(p, product, pl);
else
snprintf(p, pl, "product 0x%04x", UGETW(udd->idProduct));
}
int
usbd_printBCD(char *cp, size_t len, int bcd)
{
int l;
l = snprintf(cp, len, "%x.%02x", bcd >> 8, bcd & 0xff);
if (l == -1 || len == 0)
return (0);
if (l >= len)
return len - 1;
return (l);
}
void
usbd_devinfo(struct usbd_device *dev, int showclass, char *base, size_t len)
{
usb_device_descriptor_t *udd = &dev->ddesc;
char vendor[USB_MAX_STRING_LEN];
char product[USB_MAX_STRING_LEN];
char *cp = base;
int bcdDevice, bcdUSB;
usbd_devinfo_vp(dev, vendor, sizeof vendor, product, sizeof product, 0);
snprintf(cp, len, "\"%s %s\"", vendor, product);
cp += strlen(cp);
if (showclass) {
snprintf(cp, base + len - cp, ", class %d/%d",
udd->bDeviceClass, udd->bDeviceSubClass);
cp += strlen(cp);
}
bcdUSB = UGETW(udd->bcdUSB);
bcdDevice = UGETW(udd->bcdDevice);
snprintf(cp, base + len - cp, " rev ");
cp += strlen(cp);
usbd_printBCD(cp, base + len - cp, bcdUSB);
cp += strlen(cp);
snprintf(cp, base + len - cp, "/");
cp += strlen(cp);
usbd_printBCD(cp, base + len - cp, bcdDevice);
cp += strlen(cp);
snprintf(cp, base + len - cp, " addr %d", dev->address);
}
/* Delay for a certain number of ms */
void
usb_delay_ms(struct usbd_bus *bus, u_int ms)
{
static int usb_delay_wchan;
/* Wait at least two clock ticks so we know the time has passed. */
if (bus->use_polling || cold)
delay((ms+1) * 1000);
else
tsleep(&usb_delay_wchan, PRIBIO, "usbdly",
(ms*hz+999)/1000 + 1);
}
/* Delay given a device handle. */
void
usbd_delay_ms(struct usbd_device *dev, u_int ms)
{
if (usbd_is_dying(dev))
return;
usb_delay_ms(dev->bus, ms);
}
usbd_status
usbd_port_disown_to_1_1(struct usbd_device *dev, int port)
{
usb_port_status_t ps;
usbd_status err;
int n;
err = usbd_set_port_feature(dev, port, UHF_PORT_DISOWN_TO_1_1);
DPRINTF(("usbd_disown_to_1_1: port %d disown request done, error=%s\n",
port, usbd_errstr(err)));
if (err)
return (err);
n = 10;
do {
/* Wait for device to recover from reset. */
usbd_delay_ms(dev, USB_PORT_RESET_DELAY);
err = usbd_get_port_status(dev, port, &ps);
if (err) {
DPRINTF(("%s: get status failed %d\n", __func__, err));
return (err);
}
/* If the device disappeared, just give up. */
if (!(UGETW(ps.wPortStatus) & UPS_CURRENT_CONNECT_STATUS))
return (USBD_NORMAL_COMPLETION);
} while ((UGETW(ps.wPortChange) & UPS_C_PORT_RESET) == 0 && --n > 0);
if (n == 0)
return (USBD_TIMEOUT);
return (err);
}
int
usbd_reset_port(struct usbd_device *dev, int port)
{
usb_port_status_t ps;
int n;
if (usbd_set_port_feature(dev, port, UHF_PORT_RESET))
return (EIO);
DPRINTF(("%s: port %d reset done\n", __func__, port));
n = 10;
do {
/* Wait for device to recover from reset. */
usbd_delay_ms(dev, USB_PORT_RESET_DELAY);
if (usbd_get_port_status(dev, port, &ps)) {
DPRINTF(("%s: get status failed\n", __func__));
return (EIO);
}
/* If the device disappeared, just give up. */
if (!(UGETW(ps.wPortStatus) & UPS_CURRENT_CONNECT_STATUS))
return (0);
} while ((UGETW(ps.wPortChange) & UPS_C_PORT_RESET) == 0 && --n > 0);
/* Clear port reset even if a timeout occured. */
if (usbd_clear_port_feature(dev, port, UHF_C_PORT_RESET)) {
DPRINTF(("%s: clear port feature failed\n", __func__));
return (EIO);
}
if (n == 0)
return (ETIMEDOUT);
/* Wait for the device to recover from reset. */
usbd_delay_ms(dev, USB_PORT_RESET_RECOVERY);
return (0);
}
usb_interface_descriptor_t *
usbd_find_idesc(usb_config_descriptor_t *cd, int ifaceidx, int altidx)
{
char *p = (char *)cd;
char *end = p + UGETW(cd->wTotalLength);
usb_interface_descriptor_t *d;
int curidx, lastidx, curaidx = 0;
for (curidx = lastidx = -1; p < end; ) {
d = (usb_interface_descriptor_t *)p;
DPRINTFN(4,("usbd_find_idesc: idx=%d(%d) altidx=%d(%d) len=%d "
"type=%d\n",
ifaceidx, curidx, altidx, curaidx,
d->bLength, d->bDescriptorType));
if (d->bLength == 0) /* bad descriptor */
break;
p += d->bLength;
if (p <= end && d->bDescriptorType == UDESC_INTERFACE) {
if (d->bInterfaceNumber != lastidx) {
lastidx = d->bInterfaceNumber;
curidx++;
curaidx = 0;
} else
curaidx++;
if (ifaceidx == curidx && altidx == curaidx)
return (d);
}
}
return (NULL);
}
usb_endpoint_descriptor_t *
usbd_find_edesc(usb_config_descriptor_t *cd, int ifaceidx, int altidx,
int endptidx)
{
char *p = (char *)cd;
char *end = p + UGETW(cd->wTotalLength);
usb_interface_descriptor_t *d;
usb_endpoint_descriptor_t *e;
int curidx;
d = usbd_find_idesc(cd, ifaceidx, altidx);
if (d == NULL)
return (NULL);
if (endptidx >= d->bNumEndpoints) /* quick exit */
return (NULL);
curidx = -1;
for (p = (char *)d + d->bLength; p < end; ) {
e = (usb_endpoint_descriptor_t *)p;
if (e->bLength == 0) /* bad descriptor */
break;
p += e->bLength;
if (p <= end && e->bDescriptorType == UDESC_INTERFACE)
return (NULL);
if (p <= end && e->bDescriptorType == UDESC_ENDPOINT) {
curidx++;
if (curidx == endptidx)
return (e);
}
}
return (NULL);
}
usbd_status
usbd_fill_iface_data(struct usbd_device *dev, int ifaceidx, int altidx)
{
struct usbd_interface *ifc = &dev->ifaces[ifaceidx];
usb_interface_descriptor_t *idesc;
int nendpt;
DPRINTFN(4,("%s: ifaceidx=%d altidx=%d\n", __func__, ifaceidx, altidx));
idesc = usbd_find_idesc(dev->cdesc, ifaceidx, altidx);
if (idesc == NULL)
return (USBD_INVAL);
nendpt = idesc->bNumEndpoints;
DPRINTFN(4,("%s: found idesc nendpt=%d\n", __func__, nendpt));
ifc->device = dev;
ifc->idesc = idesc;
ifc->index = ifaceidx;
ifc->altindex = altidx;
ifc->endpoints = NULL;
ifc->priv = NULL;
LIST_INIT(&ifc->pipes);
if (nendpt != 0) {
ifc->endpoints = mallocarray(nendpt, sizeof(*ifc->endpoints),
M_USB, M_NOWAIT | M_ZERO);
if (ifc->endpoints == NULL)
return (USBD_NOMEM);
}
if (usbd_parse_idesc(dev, ifc)) {
free(ifc->endpoints, M_USB, nendpt * sizeof(*ifc->endpoints));
ifc->endpoints = NULL;
return (USBD_INVAL);
}
return (USBD_NORMAL_COMPLETION);
}
int
usbd_parse_idesc(struct usbd_device *dev, struct usbd_interface *ifc)
{
#define ed ((usb_endpoint_descriptor_t *)p)
char *p, *end;
int i;
p = (char *)ifc->idesc + ifc->idesc->bLength;
end = (char *)dev->cdesc + UGETW(dev->cdesc->wTotalLength);
for (i = 0; i < ifc->idesc->bNumEndpoints; i++) {
for (; p < end; p += ed->bLength) {
if (p + ed->bLength <= end && ed->bLength != 0 &&
ed->bDescriptorType == UDESC_ENDPOINT)
break;
if (ed->bLength == 0 ||
ed->bDescriptorType == UDESC_INTERFACE)
return (-1);
}
if (p >= end)
return (-1);
if (dev->speed == USB_SPEED_HIGH) {
unsigned int mps;
/* Control and bulk endpoints have max packet limits. */
switch (UE_GET_XFERTYPE(ed->bmAttributes)) {
case UE_CONTROL:
mps = USB_2_MAX_CTRL_PACKET;
goto check;
case UE_BULK:
mps = USB_2_MAX_BULK_PACKET;
check:
if (UGETW(ed->wMaxPacketSize) != mps) {
USETW(ed->wMaxPacketSize, mps);
DPRINTF(("%s: bad max packet size\n",
__func__));
}
break;
default:
break;
}
}
ifc->endpoints[i].edesc = ed;
ifc->endpoints[i].refcnt = 0;
ifc->endpoints[i].savedtoggle = 0;
p += ed->bLength;
}
return (0);
#undef ed
}
void
usbd_free_iface_data(struct usbd_device *dev, int ifcno)
{
struct usbd_interface *ifc = &dev->ifaces[ifcno];
if (ifc->endpoints)
free(ifc->endpoints, M_USB, 0);
}
usbd_status
usbd_set_config(struct usbd_device *dev, int conf)
{
usb_device_request_t req;
req.bmRequestType = UT_WRITE_DEVICE;
req.bRequest = UR_SET_CONFIG;
USETW(req.wValue, conf);
USETW(req.wIndex, 0);
USETW(req.wLength, 0);
return (usbd_do_request(dev, &req, 0));
}
usbd_status
usbd_set_config_no(struct usbd_device *dev, int no, int msg)
{
int index;
usb_config_descriptor_t cd;
usbd_status err;
DPRINTFN(5,("usbd_set_config_no: %d\n", no));
/* Figure out what config index to use. */
for (index = 0; index < dev->ddesc.bNumConfigurations; index++) {
err = usbd_get_desc(dev, UDESC_CONFIG, index,
USB_CONFIG_DESCRIPTOR_SIZE, &cd);
if (err || cd.bDescriptorType != UDESC_CONFIG)
return (err);
if (cd.bConfigurationValue == no)
return (usbd_set_config_index(dev, index, msg));
}
return (USBD_INVAL);
}
usbd_status
usbd_set_config_index(struct usbd_device *dev, int index, int msg)
{
usb_status_t ds;
usb_config_descriptor_t cd, *cdp;
usbd_status err;
int i, ifcidx, nifc, cdplen, selfpowered, power;
DPRINTFN(5,("usbd_set_config_index: dev=%p index=%d\n", dev, index));
/* XXX check that all interfaces are idle */
if (dev->config != USB_UNCONFIG_NO) {
DPRINTF(("usbd_set_config_index: free old config\n"));
/* Free all configuration data structures. */
nifc = dev->cdesc->bNumInterface;
for (ifcidx = 0; ifcidx < nifc; ifcidx++)
usbd_free_iface_data(dev, ifcidx);
free(dev->ifaces, M_USB, 0);
free(dev->cdesc, M_USB, 0);
dev->ifaces = NULL;
dev->cdesc = NULL;
dev->config = USB_UNCONFIG_NO;
}
if (index == USB_UNCONFIG_INDEX) {
/* We are unconfiguring the device, so leave unallocated. */
DPRINTF(("usbd_set_config_index: set config 0\n"));
err = usbd_set_config(dev, USB_UNCONFIG_NO);
if (err)
DPRINTF(("usbd_set_config_index: setting config=0 "
"failed, error=%s\n", usbd_errstr(err)));
return (err);
}
/* Get the short descriptor. */
err = usbd_get_desc(dev, UDESC_CONFIG, index,
USB_CONFIG_DESCRIPTOR_SIZE, &cd);
if (err)
return (err);
if (cd.bDescriptorType != UDESC_CONFIG)
return (USBD_INVAL);
cdplen = UGETW(cd.wTotalLength);
cdp = malloc(cdplen, M_USB, M_NOWAIT);
if (cdp == NULL)
return (USBD_NOMEM);
/* Get the full descriptor. */
for (i = 0; i < 3; i++) {
err = usbd_get_desc(dev, UDESC_CONFIG, index, cdplen, cdp);
if (!err)
break;
usbd_delay_ms(dev, 200);
}
if (err)
goto bad;
if (cdp->bDescriptorType != UDESC_CONFIG) {
DPRINTFN(-1,("usbd_set_config_index: bad desc %d\n",
cdp->bDescriptorType));
err = USBD_INVAL;
goto bad;
}
/* Figure out if the device is self or bus powered. */
selfpowered = 0;
if (!(dev->quirks->uq_flags & UQ_BUS_POWERED) &&
(cdp->bmAttributes & UC_SELF_POWERED)) {
/* May be self powered. */
if (cdp->bmAttributes & UC_BUS_POWERED) {
/* Must ask device. */
if (dev->quirks->uq_flags & UQ_POWER_CLAIM) {
/*
* Hub claims to be self powered, but isn't.
* It seems that the power status can be
* determined by the hub characteristics.
*/
usb_hub_descriptor_t hd;
usb_device_request_t req;
req.bmRequestType = UT_READ_CLASS_DEVICE;
req.bRequest = UR_GET_DESCRIPTOR;
USETW(req.wValue, 0);
USETW(req.wIndex, 0);
USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE);
err = usbd_do_request(dev, &req, &hd);
if (!err &&
(UGETW(hd.wHubCharacteristics) &
UHD_PWR_INDIVIDUAL))
selfpowered = 1;
DPRINTF(("usbd_set_config_index: charac=0x%04x"
", error=%s\n",
UGETW(hd.wHubCharacteristics),
usbd_errstr(err)));
} else {
err = usbd_get_device_status(dev, &ds);
if (!err &&
(UGETW(ds.wStatus) & UDS_SELF_POWERED))
selfpowered = 1;
DPRINTF(("usbd_set_config_index: status=0x%04x"
", error=%s\n",
UGETW(ds.wStatus), usbd_errstr(err)));
}
} else
selfpowered = 1;
}
DPRINTF(("usbd_set_config_index: (addr %d) cno=%d attr=0x%02x, "
"selfpowered=%d, power=%d\n", dev->address,
cdp->bConfigurationValue, cdp->bmAttributes,
selfpowered, cdp->bMaxPower * 2));
/* Check if we have enough power. */
#ifdef USB_DEBUG
if (dev->powersrc == NULL) {
DPRINTF(("usbd_set_config_index: No power source?\n"));
err = USBD_IOERROR;
goto bad;
}
#endif
power = cdp->bMaxPower * 2;
if (power > dev->powersrc->power) {
DPRINTF(("power exceeded %d %d\n", power,dev->powersrc->power));
/* XXX print nicer message. */
if (msg)
printf("%s: device addr %d (config %d) exceeds power "
"budget, %d mA > %d mA\n",
dev->bus->bdev.dv_xname, dev->address,
cdp->bConfigurationValue,
power, dev->powersrc->power);
err = USBD_NO_POWER;
goto bad;
}
dev->power = power;
dev->self_powered = selfpowered;
/* Set the actual configuration value. */
DPRINTF(("usbd_set_config_index: set config %d\n",
cdp->bConfigurationValue));
err = usbd_set_config(dev, cdp->bConfigurationValue);
if (err) {
DPRINTF(("usbd_set_config_index: setting config=%d failed, "
"error=%s\n", cdp->bConfigurationValue, usbd_errstr(err)));
goto bad;
}
/* Allocate and fill interface data. */
nifc = cdp->bNumInterface;
dev->ifaces = mallocarray(nifc, sizeof(struct usbd_interface),
M_USB, M_NOWAIT | M_ZERO);
if (dev->ifaces == NULL) {
err = USBD_NOMEM;
goto bad;
}
DPRINTFN(5,("usbd_set_config_index: dev=%p cdesc=%p\n", dev, cdp));
dev->cdesc = cdp;
dev->config = cdp->bConfigurationValue;
for (ifcidx = 0; ifcidx < nifc; ifcidx++) {
err = usbd_fill_iface_data(dev, ifcidx, 0);
if (err)
return (err);
}
return (USBD_NORMAL_COMPLETION);
bad:
free(cdp, M_USB, cdplen);
return (err);
}
/* XXX add function for alternate settings */
usbd_status
usbd_setup_pipe(struct usbd_device *dev, struct usbd_interface *iface,
struct usbd_endpoint *ep, int ival, struct usbd_pipe **pipe)
{
struct usbd_pipe *p;
usbd_status err;
DPRINTF(("%s: dev=%p iface=%p ep=%p pipe=%p\n", __func__,
dev, iface, ep, pipe));
p = malloc(dev->bus->pipe_size, M_USB, M_NOWAIT|M_ZERO);
if (p == NULL)
return (USBD_NOMEM);
p->pipe_size = dev->bus->pipe_size;
p->device = dev;
p->iface = iface;
p->endpoint = ep;
ep->refcnt++;
p->interval = ival;
SIMPLEQ_INIT(&p->queue);
err = dev->bus->methods->open_pipe(p);
if (err) {
DPRINTF(("%s: endpoint=0x%x failed, error=%s\n", __func__,
ep->edesc->bEndpointAddress, usbd_errstr(err)));
free(p, M_USB, dev->bus->pipe_size);
return (err);
}
*pipe = p;
return (USBD_NORMAL_COMPLETION);
}
int
usbd_set_address(struct usbd_device *dev, int addr)
{
usb_device_request_t req;
req.bmRequestType = UT_WRITE_DEVICE;
req.bRequest = UR_SET_ADDRESS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, 0);
if (usbd_do_request(dev, &req, 0))
return (1);
/* Allow device time to set new address */
usbd_delay_ms(dev, USB_SET_ADDRESS_SETTLE);
return (0);
}
int
usbd_getnewaddr(struct usbd_bus *bus)
{
int addr;
for (addr = 1; addr < USB_MAX_DEVICES; addr++)
if (bus->devices[addr] == NULL)
return (addr);
return (-1);
}
usbd_status
usbd_probe_and_attach(struct device *parent, struct usbd_device *dev, int port,
int addr)
{
struct usb_attach_arg uaa;
usb_device_descriptor_t *dd = &dev->ddesc;
int i, confi, nifaces, len;
usbd_status err;
struct device *dv;
struct usbd_interface **ifaces;
extern struct rwlock usbpalock;
rw_enter_write(&usbpalock);
uaa.device = dev;
uaa.iface = NULL;
uaa.ifaces = NULL;
uaa.nifaces = 0;
uaa.usegeneric = 0;
uaa.port = port;
uaa.configno = UHUB_UNK_CONFIGURATION;
uaa.ifaceno = UHUB_UNK_INTERFACE;
uaa.vendor = UGETW(dd->idVendor);
uaa.product = UGETW(dd->idProduct);
uaa.release = UGETW(dd->bcdDevice);
/* First try with device specific drivers. */
DPRINTF(("usbd_probe_and_attach trying device specific drivers\n"));
dv = config_found(parent, &uaa, usbd_print);
if (dv) {
dev->subdevs = mallocarray(2, sizeof dv, M_USB, M_NOWAIT);
if (dev->subdevs == NULL) {
err = USBD_NOMEM;
goto fail;
}
dev->subdevs[dev->ndevs++] = dv;
dev->subdevs[dev->ndevs] = 0;
err = USBD_NORMAL_COMPLETION;
goto fail;
}
DPRINTF(("usbd_probe_and_attach: no device specific driver found\n"));
DPRINTF(("usbd_probe_and_attach: looping over %d configurations\n",
dd->bNumConfigurations));
/* Next try with interface drivers. */
for (confi = 0; confi < dd->bNumConfigurations; confi++) {
DPRINTFN(1,("usbd_probe_and_attach: trying config idx=%d\n",
confi));
err = usbd_set_config_index(dev, confi, 1);
if (err) {
#ifdef USB_DEBUG
DPRINTF(("%s: port %d, set config at addr %d failed, "
"error=%s\n", parent->dv_xname, port,
addr, usbd_errstr(err)));
#else
printf("%s: port %d, set config %d at addr %d failed\n",
parent->dv_xname, port, confi, addr);
#endif
goto fail;
}
nifaces = dev->cdesc->bNumInterface;
uaa.configno = dev->cdesc->bConfigurationValue;
ifaces = mallocarray(nifaces, sizeof(*ifaces), M_USB, M_NOWAIT);
if (ifaces == NULL) {
err = USBD_NOMEM;
goto fail;
}
for (i = 0; i < nifaces; i++)
ifaces[i] = &dev->ifaces[i];
uaa.ifaces = ifaces;
uaa.nifaces = nifaces;
/* add 1 for possible ugen and 1 for NULL terminator */
dev->subdevs = mallocarray(nifaces + 2, sizeof(dv), M_USB,
M_NOWAIT | M_ZERO);
if (dev->subdevs == NULL) {
free(ifaces, M_USB, nifaces * sizeof(*ifaces));
err = USBD_NOMEM;
goto fail;
}
len = (nifaces + 2) * sizeof(dv);
for (i = 0; i < nifaces; i++) {
if (usbd_iface_claimed(dev, i))
continue;
uaa.iface = ifaces[i];
uaa.ifaceno = ifaces[i]->idesc->bInterfaceNumber;
dv = config_found(parent, &uaa, usbd_print);
if (dv != NULL) {
dev->subdevs[dev->ndevs++] = dv;
usbd_claim_iface(dev, i);
}
}
free(ifaces, M_USB, nifaces * sizeof(*ifaces));
if (dev->ndevs > 0) {
for (i = 0; i < nifaces; i++) {
if (!usbd_iface_claimed(dev, i))
break;
}
if (i < nifaces)
goto generic;
else
goto fail;
}
free(dev->subdevs, M_USB, (nifaces + 2) * sizeof(dv));
dev->subdevs = NULL;
}
/* No interfaces were attached in any of the configurations. */
if (dd->bNumConfigurations > 1) /* don't change if only 1 config */
usbd_set_config_index(dev, 0, 0);
DPRINTF(("usbd_probe_and_attach: no interface drivers found\n"));
generic:
/* Finally try the generic driver. */
uaa.iface = NULL;
uaa.usegeneric = 1;
uaa.configno = dev->ndevs == 0 ? UHUB_UNK_CONFIGURATION :
dev->cdesc->bConfigurationValue;
uaa.ifaceno = UHUB_UNK_INTERFACE;
dv = config_found(parent, &uaa, usbd_print);
if (dv != NULL) {
if (dev->ndevs == 0) {
dev->subdevs = mallocarray(2, sizeof dv, M_USB, M_NOWAIT);
if (dev->subdevs == NULL) {
err = USBD_NOMEM;
goto fail;
}
}
dev->subdevs[dev->ndevs++] = dv;
dev->subdevs[dev->ndevs] = 0;
err = USBD_NORMAL_COMPLETION;
goto fail;
}