LINUX DEVICE DRIVERS 3rd edition phần 7 pps

... idVendor/idProduct/bcdDevice that specifies those USB device- specific fields TYPE A string in the format bDeviceClass/bDeviceSubClass/bDeviceProtocol that speci- fies those USB device- specific fields If the bDeviceClass ... the usual pair of functions: int device_ create_file(struct device *device, struct device_ attribute *entry); void device_ remove_file(struct device *dev, st...

Ngày tải lên: 09/08/2014, 04:21

... 0; } ,ch10.108 47 Page 272 Friday, January 21, 2005 10:54 AM This is the Title of the Book, eMatter Edition Copyright © 2005 O’Reilly & Associates, Inc. All rights reserved. Top and Bottom Halves | 277 ... the 32-bit system shown earlier. CPU0 CPU1 27: 170 5 34141 IO-SAPIC-level qla1280 40: 0 0 SAPIC perfmon 43: 913 6960 IO-SAPIC-level eth0 47: 2 672 2 146 IO-SAPIC-level usb-uh...

Ngày tải lên: 09/08/2014, 04:21

... device, control how that single device looks to the host computer as a USB device. As the term “USB device drivers is very confus- ing, the USB developers have created the term “USB gadget drivers ... 0000:00: 07. 0 -> / / /devices/pci0000:00/0000:00: 07. 0 | 0000:00:09.0 -> / / /devices/pci0000:00/0000:00:09.0 | 0000:00:09.1 -> / / /devices/pci0000:00/0000:00:09.1 | 0000:00:...

Ngày tải lên: 09/08/2014, 04:21

... 20 models (Linux device) , 362–364 buses, 377 –381 classes, 3 87 391 devices, 381–3 87 firmware, 405–4 07 hotplugging, 375 , 3 97 405 kobjects, 364– 371 lifecycles, 391–3 97 low-level sysfs operations, 371 – 375 modes device ... 76 KERN_EMERG, 76 KERN_ERR, 76 KERN_INFO, 76 KERN_NOTICE, 76 KERN_WARNING, 76 list_entry, 2 97 list_for_each, 299 MINOR, 71 MODULE _DEVICE_ TA...

Ngày tải lên: 09/08/2014, 04:21

... Sysfs Operations 371 Hotplug Event Generation 375 Buses, Devices, and Drivers 377 Classes 3 87 Putting It All Together 391 Hotplug 3 97 Dealing with Firmware 405 Quick Reference 4 07 15. Memory Mapping ... . 135 ioctl 135 Blocking I/O 1 47 poll and select 163 Asynchronous Notification 169 Seeking a Device 171 Access Control on a Device File 173 Quick Reference 179 7. Time, Del...

Ngày tải lên: 09/08/2014, 04:21

... edx: bfffda7c esi: cf434f00 edi: ffffffff ebp: 00002000 esp: c27fff78 ds: 007b es: 007b ss: 0068 Process head (pid: 2331, threadinfo=c27fe000 task=c3226150) Stack: ffffffff bfffda70 00002000 ... 00000286 cf434f00 fffffff7 bfffda70 c27fe000 c0150612 cf434f00 bfffda70 00002000 cf434f20 00000000 00000003 00002000 c0103f8f 00000003 bfffda70 00002000 00002000 bfffda70 Call Trace: [<c0150612&...

Ngày tải lên: 09/08/2014, 04:21

... scull_nr_devs; i++) { scull_devices[i].quantum = scull_quantum; scull_devices[i].qset = scull_qset; init_MUTEX(&scull_devices[i].sem); scull_setup_cdev(&scull_devices[i], i); } Note that ... implementing device control this way is that the user can control the device just by writing data, without needing to use (or sometimes write) programs built just for configuring the dev...

Ngày tải lên: 09/08/2014, 04:21

... unloaded system: phon% dd bs=20 count=5 < /proc/jitsched 176 0205 176 12 07 176 1209 176 2211 176 2212 176 3212 176 3213 176 4213 176 4214 176 52 17 It’s interesting to note that each read sometimes ends ... delta inirq pid cpu command 6 076 139 0 0 4 370 0 cat 6 076 140 1 1 4368 0 cc1 6 076 141 1 1 4368 0 cc1 6 076 141 0 1 2 0 ksoftirqd/0 6 076 141 0 1 2 0 ksoftirqd/0 6 076 14...

Ngày tải lên: 09/08/2014, 04:21

... below require a pointer to a struct device. This structure is the low-level representation of a device within the Linux device model. It is not something that drivers often have to work with directly, ... that describes your device. For example, it can be found as the dev field in struct pci _device or struct usb _device. The device structure is covered in detail in Chapter 14....

Ngày tải lên: 09/08/2014, 04:21

... for fiber-channel devices, alloc_fddidev (< ;linux/ fddidevice.h>) for FDDI devices, or alloc_trdev (< ;linux/ trdevice.h>) for token ring devices. snull could use alloc_etherdev without ... Writers of drivers for other types of devices may want to take advantage of one of the other helper functions, such as alloc_fcdev (defined in < ;linux/ fcdevice.h>) for fiber-channel de...

Ngày tải lên: 09/08/2014, 04:21