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/* libusb-win32, Generic Windows USB Library
* Copyright (c) 2002-2005 Stephan Meyer <ste_meyer@web.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "libusb_driver.h"
NTSTATUS set_interface(libusb_device_t *dev,
int interface_number,
int alt_interface_number,
int timeout)
{
NTSTATUS status = STATUS_SUCCESS;
URB *urb;
int i, tmp_size;
USB_INTERFACE_DESCRIPTOR *interface_descriptor = NULL;
USBD_INTERFACE_INFORMATION *interface_information = NULL;
USBMSG("interface-number=%d alt-number=%d timeout=%d\n",
interface_number,alt_interface_number,timeout);
if (!dev->config.value || !dev->config.descriptor)
{
USBERR0("device is not configured\n");
return STATUS_INVALID_DEVICE_STATE;
}
interface_descriptor = find_interface_desc(dev->config.descriptor, dev->config.total_size, interface_number, alt_interface_number);
if (!interface_descriptor)
{
USBERR("interface-number=%d alt-number=%d does not exists.\n",
interface_number,alt_interface_number,timeout);
return STATUS_NO_MORE_ENTRIES;
}
tmp_size = sizeof(struct _URB_SELECT_INTERFACE) + interface_descriptor->bNumEndpoints * sizeof(USBD_PIPE_INFORMATION);
urb = ExAllocatePool(NonPagedPool, tmp_size);
if (!urb)
{
USBERR0("memory_allocation error\n");
return STATUS_NO_MEMORY;
}
memset(urb, 0, tmp_size);
urb->UrbHeader.Function = URB_FUNCTION_SELECT_INTERFACE;
urb->UrbHeader.Length = (USHORT)tmp_size;
urb->UrbSelectInterface.ConfigurationHandle = dev->config.handle;
urb->UrbSelectInterface.Interface.Length = sizeof(struct _USBD_INTERFACE_INFORMATION);
urb->UrbSelectInterface.Interface.NumberOfPipes = interface_descriptor->bNumEndpoints;
urb->UrbSelectInterface.Interface.Length += interface_descriptor->bNumEndpoints * sizeof(struct _USBD_PIPE_INFORMATION);
urb->UrbSelectInterface.Interface.InterfaceNumber = (UCHAR)interface_descriptor->bInterfaceNumber;
urb->UrbSelectInterface.Interface.AlternateSetting = (UCHAR)interface_descriptor->bAlternateSetting;
interface_information = &urb->UrbSelectInterface.Interface;
for (i = 0; i < interface_descriptor->bNumEndpoints; i++)
{
interface_information->Pipes[i].MaximumTransferSize = LIBUSB_MAX_READ_WRITE;
}
status = call_usbd(dev, urb, IOCTL_INTERNAL_USB_SUBMIT_URB, timeout);
if (!NT_SUCCESS(status) || !USBD_SUCCESS(urb->UrbHeader.Status))
{
USBERR("setting interface failed: status: 0x%x, urb-status: 0x%x\n", status, urb->UrbHeader.Status);
ExFreePool(urb);
return STATUS_UNSUCCESSFUL;
}
update_pipe_info(dev, interface_information);
ExFreePool(urb);
return status;
}
NTSTATUS set_interface_ex(libusb_device_t *dev,
interface_request_t* interface_request,
int timeout)
{
NTSTATUS status = STATUS_SUCCESS;
USB_INTERFACE_DESCRIPTOR *interface_descriptor = NULL;
USBMSG("interface-%s=%d alt-%s=%d timeout=%d\n",
interface_request->intf_use_index ? "index" : "number",
interface_request->intf_use_index ? interface_request->interface_index : interface_request->interface_number,
interface_request->altf_use_index ? "index" : "number",
interface_request->altf_use_index ? interface_request->altsetting_index : interface_request->altsetting_number,
timeout);
interface_descriptor = find_interface_desc_ex(dev->config.descriptor,dev->config.total_size,interface_request,NULL);
if (!interface_descriptor)
{
return STATUS_NO_MORE_ENTRIES;
}
return set_interface(dev,interface_descriptor->bInterfaceNumber, interface_descriptor->bAlternateSetting, timeout);
}
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