File: [local] / sys / dev / usb / usb_subr.c (download)
Revision 1.1, Tue Mar 4 16:14:29 2008 UTC (16 years, 2 months ago) by nbrk
Branch point for: MAIN
Initial revision
|
/* $OpenBSD: usb_subr.c,v 1.57 2007/07/21 16:28:50 deraadt 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.
* 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/selinfo.h>
#include <sys/proc.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(usbd_device_handle, int);
void usbd_devinfo(usbd_device_handle, int, char *, size_t);
void usbd_devinfo_vp(usbd_device_handle, char *, char *,
int);
char *usbd_get_string(usbd_device_handle, int, char *);
int usbd_getnewaddr(usbd_bus_handle);
int usbd_print(void *, const char *);
int usbd_submatch(struct device *, void *, void *);
void usbd_free_iface_data(usbd_device_handle, int);
void usbd_kill_pipe(usbd_pipe_handle);
usbd_status usbd_probe_and_attach(struct device *,
usbd_device_handle, int, int);
u_int32_t usb_cookie_no = 0;
#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(usbd_device_handle 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, 1); /* only size byte first */
err = usbd_do_request_flags(dev, &req, sdesc, USBD_SHORT_XFER_OK,
&actlen, USBD_DEFAULT_TIMEOUT);
if (err)
return (err);
if (actlen < 1)
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(usbd_device_handle dev, int si, char *buf)
{
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++) {
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);
}
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 */
}
void
usbd_devinfo_vp(usbd_device_handle dev, char *v, char *p, int usedev)
{
usb_device_descriptor_t *udd = &dev->ddesc;
char *vendor = 0, *product = 0;
#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);
usbd_trim_spaces(vendor);
product = usbd_get_string(dev, udd->iProduct, p);
usbd_trim_spaces(product);
} else {
vendor = NULL;
product = NULL;
}
#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 (vendor != NULL && *vendor)
strlcpy(v, vendor, USB_MAX_STRING_LEN); /* XXX */
else
snprintf(v, USB_MAX_STRING_LEN, "vendor 0x%04x", /* XXX */
UGETW(udd->idVendor));
if (product != NULL && *product)
strlcpy(p, product, USB_MAX_STRING_LEN); /* XXX */
else
snprintf(p, USB_MAX_STRING_LEN, "product 0x%04x", /* XXX */
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(usbd_device_handle 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, product, 1);
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);
}
char *
usbd_devinfo_alloc(usbd_device_handle dev, int showclass)
{
char *devinfop;
devinfop = malloc(DEVINFOSIZE, M_TEMP, M_WAITOK);
usbd_devinfo(dev, showclass, devinfop, DEVINFOSIZE);
return devinfop;
}
void
usbd_devinfo_free(char *devinfop)
{
free(devinfop, M_TEMP);
}
/* Delay for a certain number of ms */
void
usb_delay_ms(usbd_bus_handle bus, u_int ms)
{
/* Wait at least two clock ticks so we know the time has passed. */
if (bus->use_polling || cold)
delay((ms+1) * 1000);
else
tsleep(&ms, PRIBIO, "usbdly", (ms*hz+999)/1000 + 1);
}
/* Delay given a device handle. */
void
usbd_delay_ms(usbd_device_handle dev, u_int ms)
{
usb_delay_ms(dev->bus, ms);
}
usbd_status
usbd_reset_port(usbd_device_handle dev, int port, usb_port_status_t *ps)
{
usb_device_request_t req;
usbd_status err;
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);
err = usbd_do_request(dev, &req, 0);
DPRINTFN(1,("usbd_reset_port: port %d reset 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(("usbd_reset_port: get status failed %d\n",
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);
err = usbd_clear_port_feature(dev, port, UHF_C_PORT_RESET);
#ifdef USB_DEBUG
if (err)
DPRINTF(("usbd_reset_port: clear port feature failed %d\n",
err));
#endif
/* Wait for the device to recover from reset. */
usbd_delay_ms(dev, USB_PORT_RESET_RECOVERY);
return (err);
}
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(usbd_device_handle dev, int ifaceidx, int altidx)
{
usbd_interface_handle ifc = &dev->ifaces[ifaceidx];
usb_interface_descriptor_t *idesc;
char *p, *end;
int endpt, nendpt;
DPRINTFN(4,("usbd_fill_iface_data: ifaceidx=%d altidx=%d\n",
ifaceidx, altidx));
idesc = usbd_find_idesc(dev->cdesc, ifaceidx, altidx);
if (idesc == NULL)
return (USBD_INVAL);
ifc->device = dev;
ifc->idesc = idesc;
ifc->index = ifaceidx;
ifc->altindex = altidx;
nendpt = ifc->idesc->bNumEndpoints;
DPRINTFN(4,("usbd_fill_iface_data: found idesc nendpt=%d\n", nendpt));
if (nendpt != 0) {
ifc->endpoints = malloc(nendpt * sizeof(struct usbd_endpoint),
M_USB, M_NOWAIT);
if (ifc->endpoints == NULL)
return (USBD_NOMEM);
} else
ifc->endpoints = NULL;
ifc->priv = NULL;
p = (char *)ifc->idesc + ifc->idesc->bLength;
end = (char *)dev->cdesc + UGETW(dev->cdesc->wTotalLength);
#define ed ((usb_endpoint_descriptor_t *)p)
for (endpt = 0; endpt < nendpt; endpt++) {
DPRINTFN(10,("usbd_fill_iface_data: endpt=%d\n", endpt));
for (; p < end; p += ed->bLength) {
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->bLength != 0 &&
ed->bDescriptorType == UDESC_ENDPOINT)
goto found;
if (ed->bLength == 0 ||
ed->bDescriptorType == UDESC_INTERFACE)
break;
}
/* passed end, or bad desc */
printf("usbd_fill_iface_data: bad descriptor(s): %s\n",
ed->bLength == 0 ? "0 length" :
ed->bDescriptorType == UDESC_INTERFACE ? "iface desc" :
"out of data");
goto bad;
found:
ifc->endpoints[endpt].edesc = ed;
if (dev->speed == USB_SPEED_HIGH) {
u_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);
#ifdef DIAGNOSTIC
printf("usbd_fill_iface_data: bad max "
"packet size\n");
#endif
}
break;
default:
break;
}
}
ifc->endpoints[endpt].refcnt = 0;
ifc->endpoints[endpt].savedtoggle = 0;
p += ed->bLength;
}
#undef ed
LIST_INIT(&ifc->pipes);
return (USBD_NORMAL_COMPLETION);
bad:
if (ifc->endpoints != NULL) {
free(ifc->endpoints, M_USB);
ifc->endpoints = NULL;
}
return (USBD_INVAL);
}
void
usbd_free_iface_data(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(usbd_device_handle 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(usbd_device_handle dev, int no, int msg)
{
int index;
usb_config_descriptor_t cd;
usbd_status err;
if (no == USB_UNCONFIG_NO)
return (usbd_set_config_index(dev, USB_UNCONFIG_INDEX, msg));
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_config_desc(dev, index, &cd);
if (err)
return (err);
if (cd.bConfigurationValue == no)
return (usbd_set_config_index(dev, index, msg));
}
return (USBD_INVAL);
}
usbd_status
usbd_set_config_index(usbd_device_handle dev, int index, int msg)
{
usb_status_t ds;
usb_config_descriptor_t cd, *cdp;
usbd_status err;
int i, ifcidx, nifc, len, 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);
free(dev->cdesc, M_USB);
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_config_desc(dev, index, &cd);
if (err)
return (err);
len = UGETW(cd.wTotalLength);
cdp = malloc(len, 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, len, 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",
cdp->bConfigurationValue, dev->address, 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"));
return (USBD_IOERROR);
}
#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 = malloc(nifc * sizeof(struct usbd_interface),
M_USB, M_NOWAIT);
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) {
while (--ifcidx >= 0)
usbd_free_iface_data(dev, ifcidx);
goto bad;
}
}
return (USBD_NORMAL_COMPLETION);
bad:
free(cdp, M_USB);
return (err);
}
/* XXX add function for alternate settings */
usbd_status
usbd_setup_pipe(usbd_device_handle dev, usbd_interface_handle iface,
struct usbd_endpoint *ep, int ival, usbd_pipe_handle *pipe)
{
usbd_pipe_handle p;
usbd_status err;
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 == NULL)
return (USBD_NOMEM);
p->device = dev;
p->iface = iface;
p->endpoint = ep;
ep->refcnt++;
p->refcnt = 1;
p->intrxfer = 0;
p->running = 0;
p->aborting = 0;
p->repeat = 0;
p->interval = ival;
SIMPLEQ_INIT(&p->queue);
err = dev->bus->methods->open_pipe(p);
if (err) {
DPRINTFN(-1,("usbd_setup_pipe: endpoint=0x%x failed, error="
"%s\n",
ep->edesc->bEndpointAddress, usbd_errstr(err)));
free(p, M_USB);
return (err);
}
*pipe = p;
return (USBD_NORMAL_COMPLETION);
}
/* Abort the device control pipe. */
void
usbd_kill_pipe(usbd_pipe_handle pipe)
{
usbd_abort_pipe(pipe);
pipe->methods->close(pipe);
pipe->endpoint->refcnt--;
free(pipe, M_USB);
}
int
usbd_getnewaddr(usbd_bus_handle bus)
{
int addr;
for (addr = 1; addr < USB_MAX_DEVICES; addr++)
if (bus->devices[addr] == 0)
return (addr);
return (-1);
}
usbd_status
usbd_probe_and_attach(struct device *parent, usbd_device_handle dev, int port,
int addr)
{
struct usb_attach_arg uaa;
usb_device_descriptor_t *dd = &dev->ddesc;
int found, i, confi, nifaces, len;
usbd_status err;
struct device *dv;
usbd_interface_handle *ifaces;
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_sm(parent, &uaa, usbd_print, usbd_submatch);
if (dv) {
dev->subdevs = malloc(2 * sizeof dv, M_USB, M_NOWAIT);
if (dev->subdevs == NULL)
return (USBD_NOMEM);
dev->subdevs[0] = dv;
dev->subdevs[1] = 0;
return (USBD_NORMAL_COMPLETION);
}
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 at addr %d failed\n",
parent->dv_xname, port, addr);
#endif
return (err);
}
nifaces = dev->cdesc->bNumInterface;
uaa.configno = dev->cdesc->bConfigurationValue;
ifaces = malloc(nifaces * sizeof(usbd_interface_handle),
M_USB, M_NOWAIT);
if (ifaces == NULL)
return (USBD_NOMEM);
for (i = 0; i < nifaces; i++)
ifaces[i] = &dev->ifaces[i];
uaa.ifaces = ifaces;
uaa.nifaces = nifaces;
len = (nifaces+1) * sizeof dv;
dev->subdevs = malloc(len, M_USB, M_NOWAIT);
if (dev->subdevs == NULL) {
free(ifaces, M_USB);
return (USBD_NOMEM);
}
bzero(dev->subdevs, len);
found = 0;
for (i = 0; i < nifaces; i++) {
if (ifaces[i] == NULL)
continue; /* interface already claimed */
uaa.iface = ifaces[i];
uaa.ifaceno = ifaces[i]->idesc->bInterfaceNumber;
dv = config_found_sm(parent, &uaa, usbd_print,
usbd_submatch);
if (dv != NULL) {
dev->subdevs[found++] = dv;
ifaces[i] = NULL; /* consumed */
}
}
free(ifaces, M_USB);
if (found != 0) {
return (USBD_NORMAL_COMPLETION);
}
free(dev->subdevs, M_USB);
dev->subdevs = 0;
}
/* 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"));
/* Finally try the generic driver. */
uaa.iface = NULL;
uaa.usegeneric = 1;
uaa.configno = UHUB_UNK_CONFIGURATION;
uaa.ifaceno = UHUB_UNK_INTERFACE;
dv = config_found_sm(parent, &uaa, usbd_print, usbd_submatch);
if (dv != NULL) {
dev->subdevs = malloc(2 * sizeof dv, M_USB, M_NOWAIT);
if (dev->subdevs == 0)
return (USBD_NOMEM);
dev->subdevs[0] = dv;
dev->subdevs[1] = 0;
return (USBD_NORMAL_COMPLETION);
}
/*
* The generic attach failed, but leave the device as it is.
* We just did not find any drivers, that's all. The device is
* fully operational and not harming anyone.
*/
DPRINTF(("usbd_probe_and_attach: generic attach failed\n"));
return (USBD_NORMAL_COMPLETION);
}
/*
* 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(struct device *parent, usbd_bus_handle bus, int depth,
int speed, int port, struct usbd_port *up)
{
usbd_device_handle dev, adev;
struct usbd_device *hub;
usb_device_descriptor_t *dd;
usbd_status err;
int addr;
int i;
int p;
DPRINTF(("usbd_new_device bus=%p port=%d depth=%d speed=%d\n",
bus, port, depth, speed));
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 == NULL)
return (USBD_NOMEM);
memset(dev, 0, sizeof *dev);
dev->bus = bus;
/* Set up default endpoint handle. */
dev->def_ep.edesc = &dev->def_ep_desc;
/* 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->quirks = &usbd_no_quirk;
dev->address = USB_START_ADDR;
dev->ddesc.bMaxPacketSize = 0;
dev->depth = depth;
dev->powersrc = up;
dev->myhub = up->parent;
up->device = dev;
/* Locate port on upstream high speed hub */
for (adev = dev, hub = up->parent;
hub != NULL && hub->speed != USB_SPEED_HIGH;
adev = hub, hub = hub->myhub)
;
if (hub) {
for (p = 0; p < hub->hub->hubdesc.bNbrPorts; p++) {
if (hub->hub->ports[p].device == adev) {
dev->myhsport = &hub->hub->ports[p];
goto found;
}
}
panic("usbd_new_device: cannot find HS port");
found:
DPRINTFN(1,("usbd_new_device: high speed port %d\n", p));
} else {
dev->myhsport = NULL;
}
dev->speed = speed;
dev->langid = USBD_NOLANG;
dev->cookie.cookie = ++usb_cookie_no;
/* Establish the default pipe. */
err = usbd_setup_pipe(dev, 0, &dev->def_ep, USBD_DEFAULT_INTERVAL,
&dev->default_pipe);
if (err) {
usbd_remove_device(dev, up);
return (err);
}
dd = &dev->ddesc;
/* Try a few times in case the device is slow (i.e. outside specs.) */
for (i = 0; i < 5; i++) {
/* Get the first 8 bytes of the device descriptor. */
err = usbd_get_desc(dev, UDESC_DEVICE, 0, USB_MAX_IPACKET, dd);
if (!err)
break;
/* progressively increase the delay */
usbd_delay_ms(dev, 200 * (i + 1));
}
if (err) {
DPRINTFN(-1, ("usbd_new_device: addr=%d, getting first desc "
"failed\n", addr));
usbd_remove_device(dev, up);
return (err);
}
if (speed == USB_SPEED_HIGH) {
/* Max packet size must be 64 (sec 5.5.3). */
if (dd->bMaxPacketSize != USB_2_MAX_CTRL_PACKET) {
#ifdef DIAGNOSTIC
printf("usbd_new_device: addr=%d bad max packet size\n",
addr);
#endif
dd->bMaxPacketSize = USB_2_MAX_CTRL_PACKET;
}
}
DPRINTF(("usbd_new_device: adding unit addr=%d, rev=%02x, class=%d, "
"subclass=%d, protocol=%d, maxpacket=%d, len=%d, speed=%d\n",
addr,UGETW(dd->bcdUSB), dd->bDeviceClass, dd->bDeviceSubClass,
dd->bDeviceProtocol, dd->bMaxPacketSize, dd->bLength,
dev->speed));
if (dd->bDescriptorType != UDESC_DEVICE) {
/* Illegal device descriptor */
DPRINTFN(-1,("usbd_new_device: illegal descriptor %d\n",
dd->bDescriptorType));
usbd_remove_device(dev, up);
return (USBD_INVAL);
}
if (dd->bLength < USB_DEVICE_DESCRIPTOR_SIZE) {
DPRINTFN(-1,("usbd_new_device: bad length %d\n", dd->bLength));
usbd_remove_device(dev, up);
return (USBD_INVAL);
}
USETW(dev->def_ep_desc.wMaxPacketSize, dd->bMaxPacketSize);
err = usbd_reload_device_desc(dev);
if (err) {
DPRINTFN(-1, ("usbd_new_device: addr=%d, getting full desc "
"failed\n", addr));
usbd_remove_device(dev, up);
return (err);
}
/* Set the address */
DPRINTFN(5,("usbd_new_device: setting device address=%d\n", addr));
err = usbd_set_address(dev, addr);
if (err) {
DPRINTFN(-1,("usbd_new_device: set address %d failed\n", addr));
err = USBD_SET_ADDR_FAILED;
usbd_remove_device(dev, up);
return (err);
}
/* Allow device time to set new address */
usbd_delay_ms(dev, USB_SET_ADDRESS_SETTLE);
dev->address = addr; /* New device address now */
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));
usbd_add_dev_event(USB_EVENT_DEVICE_ATTACH, dev);
err = usbd_probe_and_attach(parent, dev, port, addr);
if (err) {
usbd_remove_device(dev, up);
return (err);
}
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_reload_device_desc(usbd_device_handle dev)
{
usbd_status err;
/* Get the full device descriptor. */
err = usbd_get_device_desc(dev, &dev->ddesc);
if (err)
return (err);
/* Figure out what's wrong with this device. */
dev->quirks = usbd_find_quirk(&dev->ddesc);
return (USBD_NORMAL_COMPLETION);
}
void
usbd_remove_device(usbd_device_handle dev, struct usbd_port *up)
{
DPRINTF(("usbd_remove_device: %p\n", dev));
if (dev->default_pipe != NULL)
usbd_kill_pipe(dev->default_pipe);
up->device = NULL;
dev->bus->devices[dev->address] = NULL;
free(dev, M_USB);
}
int
usbd_print(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, sizeof devinfo);
printf("%s, %s", devinfo, pnp);
}
if (uaa->port != 0)
printf(" port %d", uaa->port);
if (uaa->configno != UHUB_UNK_CONFIGURATION)
printf(" configuration %d", uaa->configno);
if (uaa->ifaceno != UHUB_UNK_INTERFACE)
printf(" interface %d", uaa->ifaceno);
#if 0
/*
* It gets very crowded with these locators on the attach line.
* They are not really needed since they are printed in the clear
* by each driver.
*/
if (uaa->vendor != UHUB_UNK_VENDOR)
printf(" vendor 0x%04x", uaa->vendor);
if (uaa->product != UHUB_UNK_PRODUCT)
printf(" product 0x%04x", uaa->product);
if (uaa->release != UHUB_UNK_RELEASE)
printf(" release 0x%04x", uaa->release);
#endif
return (UNCONF);
}
int
usbd_submatch(struct device *parent, void *match, void *aux)
{
struct cfdata *cf = match;
struct usb_attach_arg *uaa = aux;
DPRINTFN(5,("usbd_submatch port=%d,%d configno=%d,%d "
"ifaceno=%d,%d vendor=%d,%d product=%d,%d release=%d,%d\n",
uaa->port, cf->uhubcf_port,
uaa->configno, cf->uhubcf_configuration,
uaa->ifaceno, cf->uhubcf_interface,
uaa->vendor, cf->uhubcf_vendor,
uaa->product, cf->uhubcf_product,
uaa->release, cf->uhubcf_release));
if (uaa->port != 0 && /* root hub has port 0, it should match */
((uaa->port != 0 &&
cf->uhubcf_port != UHUB_UNK_PORT &&
cf->uhubcf_port != uaa->port) ||
(uaa->configno != UHUB_UNK_CONFIGURATION &&
cf->uhubcf_configuration != UHUB_UNK_CONFIGURATION &&
cf->uhubcf_configuration != uaa->configno) ||
(uaa->ifaceno != UHUB_UNK_INTERFACE &&
cf->uhubcf_interface != UHUB_UNK_INTERFACE &&
cf->uhubcf_interface != uaa->ifaceno) ||
(uaa->vendor != UHUB_UNK_VENDOR &&
cf->uhubcf_vendor != UHUB_UNK_VENDOR &&
cf->uhubcf_vendor != uaa->vendor) ||
(uaa->product != UHUB_UNK_PRODUCT &&
cf->uhubcf_product != UHUB_UNK_PRODUCT &&
cf->uhubcf_product != uaa->product) ||
(uaa->release != UHUB_UNK_RELEASE &&
cf->uhubcf_release != UHUB_UNK_RELEASE &&
cf->uhubcf_release != uaa->release)
)
)
return 0;
if (cf->uhubcf_vendor != UHUB_UNK_VENDOR &&
cf->uhubcf_vendor == uaa->vendor &&
cf->uhubcf_product != UHUB_UNK_PRODUCT &&
cf->uhubcf_product == uaa->product) {
/* We have a vendor&product locator match */
if (cf->uhubcf_release != UHUB_UNK_RELEASE &&
cf->uhubcf_release == uaa->release)
uaa->matchlvl = UMATCH_VENDOR_PRODUCT_REV;
else
uaa->matchlvl = UMATCH_VENDOR_PRODUCT;
} else
uaa->matchlvl = 0;
return ((*cf->cf_attach->ca_match)(parent, cf, aux));
}
void
usbd_fill_deviceinfo(usbd_device_handle dev, struct usb_device_info *di,
int usedev)
{
struct usbd_port *p;
int i, err, s;
di->udi_bus = dev->bus->bdev.dv_unit;
di->udi_addr = dev->address;
di->udi_cookie = dev->cookie;
usbd_devinfo_vp(dev, di->udi_vendor, di->udi_product, usedev);
usbd_printBCD(di->udi_release, sizeof di->udi_release,
UGETW(dev->ddesc.bcdDevice));
di->udi_vendorNo = UGETW(dev->ddesc.idVendor);
di->udi_productNo = UGETW(dev->ddesc.idProduct);
di->udi_releaseNo = UGETW(dev->ddesc.bcdDevice);
di->udi_class = dev->ddesc.bDeviceClass;
di->udi_subclass = dev->ddesc.bDeviceSubClass;
di->udi_protocol = dev->ddesc.bDeviceProtocol;
di->udi_config = dev->config;
di->udi_power = dev->self_powered ? 0 : dev->power;
di->udi_speed = dev->speed;
if (dev->subdevs != NULL) {
for (i = 0; dev->subdevs[i] && i < USB_MAX_DEVNAMES; i++) {
strncpy(di->udi_devnames[i],
dev->subdevs[i]->dv_xname, USB_MAX_DEVNAMELEN);
di->udi_devnames[i][USB_MAX_DEVNAMELEN-1] = '\0';
}
} else
i = 0;
for (/*i is set */; i < USB_MAX_DEVNAMES; i++)
di->udi_devnames[i][0] = 0; /* empty */
if (dev->hub) {
for (i = 0;
i < sizeof(di->udi_ports) / sizeof(di->udi_ports[0]) &&
i < dev->hub->hubdesc.bNbrPorts; i++) {
p = &dev->hub->ports[i];
if (p->device)
err = p->device->address;
else {
s = UGETW(p->status.wPortStatus);
if (s & UPS_PORT_ENABLED)
err = USB_PORT_ENABLED;
else if (s & UPS_SUSPEND)
err = USB_PORT_SUSPENDED;
else if (s & UPS_PORT_POWER)
err = USB_PORT_POWERED;
else
err = USB_PORT_DISABLED;
}
di->udi_ports[i] = err;
}
di->udi_nports = dev->hub->hubdesc.bNbrPorts;
} else
di->udi_nports = 0;
}
void
usb_free_device(usbd_device_handle dev)
{
int ifcidx, nifc;
if (dev->default_pipe != NULL)
usbd_kill_pipe(dev->default_pipe);
if (dev->ifaces != NULL) {
nifc = dev->cdesc->bNumInterface;
for (ifcidx = 0; ifcidx < nifc; ifcidx++)
usbd_free_iface_data(dev, ifcidx);
free(dev->ifaces, M_USB);
}
if (dev->cdesc != NULL)
free(dev->cdesc, M_USB);
if (dev->subdevs != NULL)
free(dev->subdevs, M_USB);
free(dev, M_USB);
}
/*
* The general mechanism for detaching drivers works as follows: Each
* driver is responsible for maintaining a reference count on the
* number of outstanding references to its softc (e.g. from
* processing hanging in a read or write). The detach method of the
* driver decrements this counter and flags in the softc that the
* driver is dying and then wakes any sleepers. It then sleeps on the
* softc. Each place that can sleep must maintain the reference
* count. When the reference count drops to -1 (0 is the normal value
* of the reference count) the a wakeup on the softc is performed
* signaling to the detach waiter that all references are gone.
*/
/*
* Called from process context when we discover that a port has
* been disconnected.
*/
void
usb_disconnect_port(struct usbd_port *up, struct device *parent)
{
usbd_device_handle dev = up->device;
int i;
DPRINTFN(3,("uhub_disconnect: up=%p dev=%p port=%d\n",
up, dev, up->portno));
#ifdef DIAGNOSTIC
if (dev == NULL) {
printf("usb_disconnect_port: no device\n");
return;
}
#endif
if (dev->subdevs != NULL) {
DPRINTFN(3,("usb_disconnect_port: disconnect subdevs\n"));
for (i = 0; dev->subdevs[i]; i++) {
DPRINTF(("%s: at %s", dev->subdevs[i]->dv_xname,
parent->dv_xname));
if (up->portno != 0)
DPRINTF((" port %d", up->portno));
DPRINTF((" (addr %d) disconnected\n", dev->address));
config_detach(dev->subdevs[i], DETACH_FORCE);
dev->subdevs[i] = 0;
}
}
usbd_add_dev_event(USB_EVENT_DEVICE_DETACH, dev);
dev->bus->devices[dev->address] = NULL;
up->device = NULL;
usb_free_device(dev);
}
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