usbd_status
usbd_set_config_index(struct usbd_device *dev, int index, int msg)
{
USBHIST_FUNC(); USBHIST_CALLED(usbdebug);
usb_config_descriptor_t cd, *cdp;
usb_bos_descriptor_t *bdp = NULL;
usbd_status err;
int i, ifcidx, nifc, len, selfpowered, power;
DPRINTFN(5, "dev=%p index=%d", dev, index, 0, 0);
if (index >= dev->ud_ddesc.bNumConfigurations &&
index != USB_UNCONFIG_INDEX) {
/* panic? */
printf("usbd_set_config_index: illegal index\n");
return USBD_INVAL;
}
/* XXX check that all interfaces are idle */
if (dev->ud_config != USB_UNCONFIG_NO) {
DPRINTF("free old config", 0, 0, 0, 0);
/* Free all configuration data structures. */
nifc = dev->ud_cdesc->bNumInterface;
for (ifcidx = 0; ifcidx < nifc; ifcidx++)
usbd_free_iface_data(dev, ifcidx);
kmem_free(dev->ud_ifaces, nifc * sizeof(struct usbd_interface));
kmem_free(dev->ud_cdesc, UGETW(dev->ud_cdesc->wTotalLength));
if (dev->ud_bdesc != NULL)
kmem_free(dev->ud_bdesc,
UGETW(dev->ud_bdesc->wTotalLength));
dev->ud_ifaces = NULL;
dev->ud_cdesc = NULL;
dev->ud_bdesc = NULL;
dev->ud_config = USB_UNCONFIG_NO;
}
if (index == USB_UNCONFIG_INDEX) {
/* We are unconfiguring the device, so leave unallocated. */
DPRINTF("set config 0", 0, 0, 0, 0);
err = usbd_set_config(dev, USB_UNCONFIG_NO);
if (err) {
DPRINTF("setting config=0 failed, err = %d", err,
0, 0, 0);
}
return err;
}
/* Get the short descriptor. */
err = usbd_get_config_desc(dev, index, &cd);
if (err) {
DPRINTF("get_config_desc=%d", err, 0, 0, 0);
return err;
}
len = UGETW(cd.wTotalLength);
cdp = kmem_alloc(len, KM_SLEEP);
if (cdp == NULL)
return USBD_NOMEM;
/* Get the full descriptor. Try a few times for slow devices. */
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) {
DPRINTF("get_desc=%d", err, 0, 0, 0);
goto bad;
}
if (cdp->bDescriptorType != UDESC_CONFIG) {
DPRINTF("bad desc %d", cdp->bDescriptorType, 0, 0, 0);
err = USBD_INVAL;
goto bad;
}
if (USB_IS_SS(dev->ud_speed)) {
usb_bos_descriptor_t bd;
/* get short bos desc */
err = usbd_get_bos_desc(dev, index, &bd);
if (!err) {
int blen = UGETW(bd.wTotalLength);
bdp = kmem_alloc(blen, KM_SLEEP);
if (bdp == NULL) {
err = USBD_NOMEM;
goto bad;
}
/* Get the full desc */
for (i = 0; i < 3; i++) {
err = usbd_get_desc(dev, UDESC_BOS, index, blen,
bdp);
if (!err)
break;
usbd_delay_ms(dev, 200);
}
if (err || bdp->bDescriptorType != UDESC_BOS) {
DPRINTF("error %d or bad desc %d", err,
bdp->bDescriptorType, 0, 0);
kmem_free(bdp, blen);
bdp = NULL;
}
}
}
dev->ud_bdesc = bdp;
/*
* Figure out if the device is self or bus powered.
*/
#if 0 /* XXX various devices don't report the power state correctly */
selfpowered = 0;
err = usbd_get_device_status(dev, &ds);
if (!err && (UGETW(ds.wStatus) & UDS_SELF_POWERED))
selfpowered = 1;
#endif
/*
* Use the power state in the configuration we are going
* to set. This doesn't necessarily reflect the actual
* power state of the device; the driver can control this
* by choosing the appropriate configuration.
*/
selfpowered = !!(cdp->bmAttributes & UC_SELF_POWERED);
DPRINTF("addr %d cno=%d attr=0x%02x, selfpowered=%d",
dev->ud_addr, cdp->bConfigurationValue, cdp->bmAttributes,
selfpowered);
DPRINTF("max power=%d", cdp->bMaxPower * 2, 0, 0, 0);
/* Check if we have enough power. */
#if 0 /* this is a no-op, see above */
if ((cdp->bmAttributes & UC_SELF_POWERED) && !selfpowered) {
if (msg)
printf("%s: device addr %d (config %d): "
"can't set self powered configuration\n",
device_xname(dev->ud_bus->bdev), dev->ud_addr,
cdp->bConfigurationValue);
err = USBD_NO_POWER;
goto bad;
}
#endif
#ifdef USB_DEBUG
if (dev->ud_powersrc == NULL) {
DPRINTF("No power source?", 0, 0, 0, 0);
err = USBD_IOERROR;
goto bad;
}
#endif
power = cdp->bMaxPower * 2;
if (power > dev->ud_powersrc->up_power) {
DPRINTF("power exceeded %d %d", power, dev->ud_powersrc->up_power,
0, 0);
/* XXX print nicer message. */
if (msg)
printf("%s: device addr %d (config %d) exceeds power "
"budget, %d mA > %d mA\n",
device_xname(dev->ud_bus->ub_usbctl), dev->ud_addr,
cdp->bConfigurationValue,
power, dev->ud_powersrc->up_power);
err = USBD_NO_POWER;
goto bad;
}
dev->ud_power = power;
dev->ud_selfpowered = selfpowered;
/* Set the actual configuration value. */
DPRINTF("set config %d", cdp->bConfigurationValue, 0, 0, 0);
err = usbd_set_config(dev, cdp->bConfigurationValue);
if (err) {
DPRINTF("setting config=%d failed, error=%d",
cdp->bConfigurationValue, err, 0, 0);
goto bad;
}
/* Allocate and fill interface data. */
nifc = cdp->bNumInterface;
dev->ud_ifaces = kmem_alloc(nifc * sizeof(struct usbd_interface),
KM_SLEEP);
if (dev->ud_ifaces == NULL) {
err = USBD_NOMEM;
goto bad;
}
DPRINTFN(5, "dev=%p cdesc=%p", dev, cdp, 0, 0);
dev->ud_cdesc = cdp;
dev->ud_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:
kmem_free(cdp, len);
if (bdp != NULL) {
kmem_free(bdp, UGETW(bdp->wTotalLength));
dev->ud_bdesc = NULL;
}
return err;
}
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));
if (dev->config != USB_UNCONFIG_NO) {
nifc = dev->cdesc->bNumInterface;
/* Check that all interfaces are idle */
for (ifcidx = 0; ifcidx < nifc; ifcidx++) {
if (LIST_EMPTY(&dev->ifaces[ifcidx].pipes))
continue;
DPRINTF(("usbd_set_config_index: open pipes exist\n"));
return (USBD_IN_USE);
}
DPRINTF(("usbd_set_config_index: free old config\n"));
/* Free all configuration data structures. */
for (ifcidx = 0; ifcidx < nifc; ifcidx++)
usbd_free_iface_data(dev, ifcidx);
kfree(dev->ifaces, M_USB);
kfree(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 = kmalloc(len, M_USB, M_INTWAIT);
/* Get the full descriptor. Try a few times for slow devices. */
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)
kprintf("%s: device addr %d (config %d) exceeds power "
"budget, %d mA > %d mA\n",
device_get_nameunit(dev->bus->bdev), 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 = kmalloc(nifc * sizeof(struct usbd_interface),
M_USB, M_INTWAIT);
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:
kfree(cdp, M_USB);
return (err);
}
