1 /* libusb-win32, Generic Windows USB Library
2 * Copyright (c) 2002-2005 Stephan Meyer <ste_meyer@web.de>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19
20 #include "libusb_driver.h"
21
22
set_interface(libusb_device_t * dev,int interface_number,int alt_interface_number,int timeout)23 NTSTATUS set_interface(libusb_device_t *dev,
24 int interface_number,
25 int alt_interface_number,
26 int timeout)
27 {
28 NTSTATUS status = STATUS_SUCCESS;
29 URB *urb;
30 int i, tmp_size;
31
32 USB_INTERFACE_DESCRIPTOR *interface_descriptor = NULL;
33 USBD_INTERFACE_INFORMATION *interface_information = NULL;
34
35
36 USBMSG("interface-number=%d alt-number=%d timeout=%d\n",
37 interface_number,alt_interface_number,timeout);
38
39 if (!dev->config.value || !dev->config.descriptor)
40 {
41 USBERR0("device is not configured\n");
42 return STATUS_INVALID_DEVICE_STATE;
43 }
44
45 interface_descriptor = find_interface_desc(dev->config.descriptor, dev->config.total_size, interface_number, alt_interface_number);
46
47 if (!interface_descriptor)
48 {
49 USBERR("interface-number=%d alt-number=%d does not exists.\n",
50 interface_number,alt_interface_number,timeout);
51
52 return STATUS_NO_MORE_ENTRIES;
53 }
54
55 tmp_size = sizeof(struct _URB_SELECT_INTERFACE) + interface_descriptor->bNumEndpoints * sizeof(USBD_PIPE_INFORMATION);
56
57 urb = ExAllocatePool(NonPagedPool, tmp_size);
58
59 if (!urb)
60 {
61 USBERR0("memory_allocation error\n");
62 return STATUS_NO_MEMORY;
63 }
64
65 memset(urb, 0, tmp_size);
66
67 urb->UrbHeader.Function = URB_FUNCTION_SELECT_INTERFACE;
68 urb->UrbHeader.Length = (USHORT)tmp_size;
69
70 urb->UrbSelectInterface.ConfigurationHandle = dev->config.handle;
71 urb->UrbSelectInterface.Interface.Length = sizeof(struct _USBD_INTERFACE_INFORMATION);
72 urb->UrbSelectInterface.Interface.NumberOfPipes = interface_descriptor->bNumEndpoints;
73 urb->UrbSelectInterface.Interface.Length += interface_descriptor->bNumEndpoints * sizeof(struct _USBD_PIPE_INFORMATION);
74
75 urb->UrbSelectInterface.Interface.InterfaceNumber = (UCHAR)interface_descriptor->bInterfaceNumber;
76 urb->UrbSelectInterface.Interface.AlternateSetting = (UCHAR)interface_descriptor->bAlternateSetting;
77
78 interface_information = &urb->UrbSelectInterface.Interface;
79
80 for (i = 0; i < interface_descriptor->bNumEndpoints; i++)
81 {
82 interface_information->Pipes[i].MaximumTransferSize = LIBUSB_MAX_READ_WRITE;
83 }
84
85 status = call_usbd(dev, urb, IOCTL_INTERNAL_USB_SUBMIT_URB, timeout);
86
87
88 if (!NT_SUCCESS(status) || !USBD_SUCCESS(urb->UrbHeader.Status))
89 {
90 USBERR("setting interface failed: status: 0x%x, urb-status: 0x%x\n", status, urb->UrbHeader.Status);
91 ExFreePool(urb);
92 return STATUS_UNSUCCESSFUL;
93 }
94
95 update_pipe_info(dev, interface_information);
96
97 ExFreePool(urb);
98
99 return status;
100 }
101
set_interface_ex(libusb_device_t * dev,interface_request_t * interface_request,int timeout)102 NTSTATUS set_interface_ex(libusb_device_t *dev,
103 interface_request_t* interface_request,
104 int timeout)
105 {
106 NTSTATUS status = STATUS_SUCCESS;
107
108 USB_INTERFACE_DESCRIPTOR *interface_descriptor = NULL;
109
110 USBMSG("interface-%s=%d alt-%s=%d timeout=%d\n",
111 interface_request->intf_use_index ? "index" : "number",
112 interface_request->intf_use_index ? interface_request->interface_index : interface_request->interface_number,
113 interface_request->altf_use_index ? "index" : "number",
114 interface_request->altf_use_index ? interface_request->altsetting_index : interface_request->altsetting_number,
115 timeout);
116
117 interface_descriptor = find_interface_desc_ex(dev->config.descriptor,dev->config.total_size,interface_request,NULL);
118 if (!interface_descriptor)
119 {
120 return STATUS_NO_MORE_ENTRIES;
121 }
122
123 return set_interface(dev,interface_descriptor->bInterfaceNumber, interface_descriptor->bAlternateSetting, timeout);
124 }
125