1 /*
2 * debug.c - USB debug helper routines.
3 *
4 * I just want these out of the way where they aren't in your
5 * face, but so that you can still use them..
6 */
7 #include <linux/config.h>
8 #include <linux/version.h>
9 #include <linux/kernel.h>
10 #include <linux/mm.h>
11 #include <linux/malloc.h>
12 #ifdef CONFIG_USB_DEBUG
13 #define DEBUG
14 #else
15 #undef DEBUG
16 #endif
17 #include <linux/usb.h>
18
19 static void usb_show_endpoint(struct usb_endpoint_descriptor *endpoint)
20 {
21 usb_show_endpoint_descriptor(endpoint);
22 }
23
24 static void usb_show_interface(struct usb_interface_descriptor *altsetting)
25 {
26 int i;
27
28 usb_show_interface_descriptor(altsetting);
29
30 for (i = 0; i < altsetting->bNumEndpoints; i++)
31 usb_show_endpoint(altsetting->endpoint + i);
32 }
33
34 static void usb_show_config(struct usb_config_descriptor *config)
35 {
36 int i, j;
37 struct usb_interface *ifp;
38
39 usb_show_config_descriptor(config);
40 for (i = 0; i < config->bNumInterfaces; i++) {
41 ifp = config->interface + i;
42
43 if (!ifp)
44 break;
45
46 printk("\n Interface: %d\n", i);
47 for (j = 0; j < ifp->num_altsetting; j++)
48 usb_show_interface(ifp->altsetting + j);
49 }
50 }
51
52 void usb_show_device(struct usb_device *dev)
53 {
54 int i;
55
56 usb_show_device_descriptor(&dev->descriptor);
57 for (i = 0; i < dev->descriptor.bNumConfigurations; i++)
58 usb_show_config(dev->config + i);
59 }
60
61 /*
62 * Parse and show the different USB descriptors.
63 */
64 void usb_show_device_descriptor(struct usb_device_descriptor *desc)
65 {
66 if (!desc)
67 {
68 printk("Invalid USB device descriptor (NULL POINTER)\n");
69 return;
70 }
71 printk(" Length = %2d%s\n", desc->bLength,
72 desc->bLength == USB_DT_DEVICE_SIZE ? "" : " (!!!)");
73 printk(" DescriptorType = %02x\n", desc->bDescriptorType);
74
75 printk(" USB version = %x.%02x\n",
76 desc->bcdUSB >> 8, desc->bcdUSB & 0xff);
77 printk(" Vendor:Product = %04x:%04x\n",
78 desc->idVendor, desc->idProduct);
79 printk(" MaxPacketSize0 = %d\n", desc->bMaxPacketSize0);
80 printk(" NumConfigurations = %d\n", desc->bNumConfigurations);
81 printk(" Device version = %x.%02x\n",
82 desc->bcdDevice >> 8, desc->bcdDevice & 0xff);
83
84 printk(" Device Class:SubClass:Protocol = %02x:%02x:%02x\n",
85 desc->bDeviceClass, desc->bDeviceSubClass, desc->bDeviceProtocol);
86 switch (desc->bDeviceClass) {
87 case 0:
88 printk(" Per-interface classes\n");
89 break;
90 case USB_CLASS_AUDIO:
91 printk(" Audio device class\n");
92 break;
93 case USB_CLASS_COMM:
94 printk(" Communications class\n");
95 break;
96 case USB_CLASS_HID:
97 printk(" Human Interface Devices class\n");
98 break;
99 case USB_CLASS_PRINTER:
100 printk(" Printer device class\n");
101 break;
102 case USB_CLASS_MASS_STORAGE:
103 printk(" Mass Storage device class\n");
104 break;
105 case USB_CLASS_HUB:
106 printk(" Hub device class\n");
107 break;
108 case USB_CLASS_VENDOR_SPEC:
109 printk(" Vendor class\n");
110 break;
111 default:
112 printk(" Unknown class\n");
113 }
114 }
115
116 void usb_show_config_descriptor(struct usb_config_descriptor *desc)
117 {
118 printk("Configuration:\n");
119 printk(" bLength = %4d%s\n", desc->bLength,
120 desc->bLength == USB_DT_CONFIG_SIZE ? "" : " (!!!)");
121 printk(" bDescriptorType = %02x\n", desc->bDescriptorType);
122 printk(" wTotalLength = %04x\n", desc->wTotalLength);
123 printk(" bNumInterfaces = %02x\n", desc->bNumInterfaces);
124 printk(" bConfigurationValue = %02x\n", desc->bConfigurationValue);
125 printk(" iConfiguration = %02x\n", desc->iConfiguration);
126 printk(" bmAttributes = %02x\n", desc->bmAttributes);
127 printk(" MaxPower = %4dmA\n", desc->MaxPower * 2);
128 }
129
130 void usb_show_interface_descriptor(struct usb_interface_descriptor *desc)
131 {
132 printk(" Alternate Setting: %2d\n", desc->bAlternateSetting);
133 printk(" bLength = %4d%s\n", desc->bLength,
134 desc->bLength == USB_DT_INTERFACE_SIZE ? "" : " (!!!)");
135 printk(" bDescriptorType = %02x\n", desc->bDescriptorType);
136 printk(" bInterfaceNumber = %02x\n", desc->bInterfaceNumber);
137 printk(" bAlternateSetting = %02x\n", desc->bAlternateSetting);
138 printk(" bNumEndpoints = %02x\n", desc->bNumEndpoints);
139 printk(" bInterface Class:SubClass:Protocol = %02x:%02x:%02x\n",
140 desc->bInterfaceClass, desc->bInterfaceSubClass, desc->bInterfaceProtocol);
141 printk(" iInterface = %02x\n", desc->iInterface);
142 }
143
144 void usb_show_endpoint_descriptor(struct usb_endpoint_descriptor *desc)
145 {
146 char *LengthCommentString = (desc->bLength ==
147 USB_DT_ENDPOINT_AUDIO_SIZE) ? " (Audio)" : (desc->bLength ==
148 USB_DT_ENDPOINT_SIZE) ? "" : " (!!!)";
149 char *EndpointType[4] = { "Control", "Isochronous", "Bulk", "Interrupt" };
150
151 printk(" Endpoint:\n");
152 printk(" bLength = %4d%s\n",
153 desc->bLength, LengthCommentString);
154 printk(" bDescriptorType = %02x\n", desc->bDescriptorType);
155 printk(" bEndpointAddress = %02x (%s)\n", desc->bEndpointAddress,
156 (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
157 USB_ENDPOINT_XFER_CONTROL ? "i/o" :
158 (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? "in" : "out");
159 printk(" bmAttributes = %02x (%s)\n", desc->bmAttributes,
160 EndpointType[USB_ENDPOINT_XFERTYPE_MASK & desc->bmAttributes]);
161 printk(" wMaxPacketSize = %04x\n", desc->wMaxPacketSize);
162 printk(" bInterval = %02x\n", desc->bInterval);
163
164 /* Audio extensions to the endpoint descriptor */
165 if (desc->bLength == USB_DT_ENDPOINT_AUDIO_SIZE) {
166 printk(" bRefresh = %02x\n", desc->bRefresh);
167 printk(" bSynchAddress = %02x\n", desc->bSynchAddress);
168 }
169 }
170
171 void usb_show_string(struct usb_device *dev, char *id, int index)
172 {
173 char *buf;
174
175 if (!index)
176 return;
177 if (!(buf = kmalloc(256, GFP_KERNEL)))
178 return;
179 if (usb_string(dev, index, buf, 256) > 0)
180 printk(KERN_INFO "%s: %s\n", id, buf);
181 kfree(buf);
182 }
183
184 void usb_dump_urb (purb_t purb)
185 {
186 printk ("urb :%p\n", purb);
187 printk ("next :%p\n", purb->next);
188 printk ("dev :%p\n", purb->dev);
189 printk ("pipe :%08X\n", purb->pipe);
190 printk ("status :%d\n", purb->status);
191 printk ("transfer_flags :%08X\n", purb->transfer_flags);
192 printk ("transfer_buffer :%p\n", purb->transfer_buffer);
193 printk ("transfer_buffer_length:%d\n", purb->transfer_buffer_length);
194 printk ("actual_length :%d\n", purb->actual_length);
195 printk ("setup_packet :%p\n", purb->setup_packet);
196 printk ("start_frame :%d\n", purb->start_frame);
197 printk ("number_of_packets :%d\n", purb->number_of_packets);
198 printk ("interval :%d\n", purb->interval);
199 printk ("error_count :%d\n", purb->error_count);
200 printk ("context :%p\n", purb->context);
201 printk ("complete :%p\n", purb->complete);
202 }
203
204
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.