linux device driver pdf download
Tài liệu Linux Device Drivers-Chapter 5 : Enhanced Char Driver Operations pptx
... used. Capabilities and Restricted Operations Access to a device is controlled by the permissions on the device file(s), and the driver is not normally involved in permissions checking. There ... modified scull device. The driver uses interaction between different processes to create asynchronous events. As with the original scull, you don't need special hardware to test the driver& apos;s ... the device semaphore held. Holding the semaphore in this case is justified since it will not deadlock the system, and since it is important that the device memory array not change while the driver...
- 112
- 324
- 0
USB Device Driver Load Process
... USBInstallDriver should create an appropriate subkey for the driver by calling theRegisterClientSettings function so the next time that the USB device is attached, theUSBD ... locate the correct driver without prompting a user.In some cases it may be necessary to specify the precedence order to a greater levelof detail; for example, combining vendor- and device- class specifiers. ... Group1_ID\Default\Group3_ID 6. Default\Group2_ID\Group3_ID 7. Default\Default\Group3_ID If multiple drivers are registered at a particular precedence level, the USBD moduleloads the one with the...
- 2
- 366
- 0
Tài liệu Design of a USB Device Driver ppt
... Embedded USB Device Architecture of an Embedded USB Device ??USB Device Driver ArchitectureUSB Device Driver Architecture??Case Study of a USB Device Driver Case Study of a USB Device Driver ??Testing ... Embedded USB Device Architecture of an Embedded USB Device ??USB Device Driver ArchitectureUSB Device Driver Architecture??Case Study of a USB Device Driver Case Study of a USB Device Driver ??Testing ... Embedded USB Device Architecture of an Embedded USB Device ??USB Device Driver ArchitectureUSB Device Driver Architecture??Case Study of a USB Device Driver Case Study of a USB Device Driver ??Testing...
- 28
- 423
- 0
Tài liệu Cơ bản về Linux Shell Script pdf
... nh−ng thùc tế hiện nay Linux là một hệ điều hành kế thừa của Unix. Linux cũng có những shell tơng tự và bạn có thể sử dụng những giới thiệu về shell ở đây với các hệ thống Linux. 3. Những loại ... lặp. Phép so sánh -lt là phép so sánh nhỏ hơn hoặc b»ng” (less-than) trong lƯnh test cđa Unix /Linux. LƯnh kiĨm tra điều kiện trên sẽ trả ra giá đúng (1) trị hoặc sai (0) để thực hiện tiếp hay...
- 15
- 1,176
- 24
Tài liệu Cisco Device Operation pdf
... 10.21 shows the ARP request from a device with an IP address of10.72.128.45 and a MAC address of 0000.0c11.1111. This device needs the MACaddress of the IP device 10.72.128.1. The 0000.0000.0000 ... tftp Copies an image on flash to a TFTP server. 9○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○Cisco Device Operation➤ Copy and back up configurations➤ Recover passwords➤ Enable Simple Network Management ... CONSOLE,AUX PORTFigure 10.2 Interface IOS commands. 25○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○Cisco Device OperationListing 10.20 The debug ip routing command.R1#debug ip routingIP routing debugging...
- 32
- 325
- 0
Tài liệu Linux Device Drivers-Chapter 1 :An Introduction to Device Drivers ppt
... by Linux, somebody somewhere has written a driver to make it work with the system. Without device drivers, there is no functioning system. Device drivers take on a special role in the Linux ... Other classes of device drivers have been added to the kernel in recent times, including USB drivers, FireWire drivers, and I2O drivers. In the same way that they handled SCSI drivers, kernel ... the applications and the actual device. This privileged role of the driver allows the driver programmer to choose exactly how the device should appear: different drivers can offer different capabilities,...
- 24
- 454
- 2
Tài liệu Linux Device Drivers-Chapter 2 : Building and Running Modules pptx
... implementations. For example, the video-for -linux set of drivers is split into a generic module that exports symbols used by lower-level device drivers for specific hardware. According to your ... any of the classes listed in "Classes of Devices and Modules" in Chapter 1, "An Introduction to Device Drivers". The sample driver shown in this chapter is called skull, ... of the implementation remain hidden to other kernel subsystems though, and a device driver can just include < ;linux/ sched.h> and refer to the current process. From a module's point...
- 75
- 560
- 1
Tài liệu Linux Device Drivers-Chapter 3: Char Drivers docx
... the minor number of the device, so the driver is free to use it at will. In practice, different minor numbers are used to access different devices or to open the same device in a different way. ... apart. A driver never actually knows the name of the device being opened, just the device number and users can play on this indifference to names by aliasing new names to a single device for ... of setting up the devices. for (i=0; i < scull_nr_devs; i++) { scull_devices[i].quantum = scull_quantum; scull_devices[i].qset = scull_qset; sema_init(&scull_devices[i].sem, 1);...
- 90
- 385
- 0
Tài liệu Linux Device Drivers-Chapter 4 : Debugging Techniques pptx
... /proc is heavily used in the Linux system. Many utilities on a modern Linux distribution, such as ps, top, and uptime, get their information from /proc. Some device drivers also export information ... } exit(0); } setconsole uses the special ioctl command TIOCLINUX, which implements Linux- specific functions. To use TIOCLINUX, you pass it an argument that is a pointer to a byte array. ... reentrant calls to your driver, since it allows other processes to run. This reentrancy should not normally be a problem, assuming that you have used suitable locking in your driver. Be sure, however,...
- 66
- 427
- 0
Tài liệu Linux Device Drivers-Chapter 6 : Flow of Time pptx
... but they are not generally of interest to driver writers. The timeline of a driver using a task queue is represented in Figure 6-1. The figure shows a driver that queues a function in tq_immediate ... two ways of setting up short-term timeouts, depending on whether your driver is waiting for other events or not. If your driver uses a wait queue to wait for some other event, but you also want ... Awakening" in Chapter 5, "Enhanced Char Driver Operations": A queue element is described by the following structure, copied directly from < ;linux/ tqueue.h>: struct tq_struct { ...
- 53
- 403
- 0
Tài liệu Linux Device Drivers-Chapter 7 : Getting Hold of Memory doc
... cache. Device drivers normally do not exhibit the sort of memory behavior that justifies using a lookaside cache, but there can be exceptions; the USB and ISDN drivers in Linux 2.4 use caches. Linux ... GFP_KERNEL and GFP_ATOMIC, although those two cover most of the needs of device drivers. All the flags are defined in < ;linux/ mm.h>: individual flags are prefixed with a double underscore, ... freeing of memory. The Linux kernel offers a richer set of memory allocation primitives, however. In this chapter we look at other ways of making use of memory in device drivers and at how to...
- 36
- 318
- 1
Tài liệu Linux Device Drivers-Chapter 8 :Hardware Management docx
... toys is a good introduction to the software interface of a Linux device driver, implementing a real device requires hardware. The driver is the abstraction layer between software concepts and ... statically assigned in local device memory, or set by means of physical jumpers. The latter is true of PCI devices, whose addresses are assigned by system software and written to device memory, where ... be either hardwired in the device or assigned by system firmware at boot time. The former is true, for example, of ISA devices, whose addresses are either burned in device logic circuits, statically...
- 50
- 311
- 0
Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát chương trình đào tạo gắn với các giáo trình cụ thể điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu