linux device drivers 2nd edition phần 6 pdf

... oduced in this chapter. #include < ;linux/ types.h> typedef u8; typedef u 16; typedef u32; typedef u64; These types are guaranteed to be 8-, 16- , 32-, and 64 -bit unsigned integer val- ues. The ... men- tioned, however, char drivers are not the only type of driver used in Linux sys- tems. Here we tur n our attention to block drivers. Block drivers provide access to block-orient...

Ngày tải lên: 13/08/2014, 21:21

... 0 2 1 keventd 60 168 7 0 0 2 1 keventd 60 168 7 0 0 2 1 keventd 60 168 7 0 0 2 1 keventd 60 168 7 0 0 2 1 keventd 60 168 7 0 0 2 1 keventd 60 168 7 0 0 2 1 keventd 60 168 7 0 0 2 1 keventd In this output, the ... June 2001 16: 37 Chapter 6: Flow of Time Reading /pr oc/jiqsched pr oduces output like the following: time delta interrupt pid cpu command 60 168 7 0 0 2 1 keventd 60 168 7...

Ngày tải lên: 13/08/2014, 21:21

... 0 0 SAPIC perfmon 43: 913 69 60 IO-SAPIC-level eth0 47: 267 22 1 46 IO-SAPIC-level usb-uhci 64 : 3 6 IO-SAPIC-edge ide0 Installing an Interrupt Handler 257 22 June 2001 16: 39 Chapter 9: Interrupt ... 2.0 or 2.2. 248 22 June 2001 16: 39 Chapter 9: Interrupt Handling 80: 4 2 IO-SAPIC-edge keyboard 89: 0 0 IO-SAPIC-edge PS/2 Mouse 239: 560 6341 560 6052 SAPIC timer 254: 67 575 52815 SAPIC...

Ngày tải lên: 13/08/2014, 21:21

... Device Operation 387 22 June 2001 16: 42 cat /proc/731/maps 08048000-08327000 r-xp 00000000 08:01 55505 /usr/X11R6/bin/XF 86_ SVGA 08327000-08 369 000 rw-p 002de000 08:01 55505 /usr/X11R6/bin/XF 86_ SVGA 40015000-40019000 ... number for the device, DEVICE_ NAME is the name of the device to be used in error messages, DEVICE_ NR retur ns the minor number of the physical device referr e...

Ngày tải lên: 13/08/2014, 21:21

... olling access, 164 -171 deleting, 61 device filesystem (see devfs) DEVICE_ INTR symbol, 329, 367 device memory (see I/O memory) DEVICE_ NAME symbol, 329, 367 DEVICE_ NO_RANDOM symbol, 329 DEVICE_ NR symbol, ... 11:58 version numbering, 10 char drivers, 55 -62 major device numbers, 56- 61 minor device numbers, 56, 61 , 69 versioned symbols, 315 enabling module version control,...

Ngày tải lên: 13/08/2014, 21:21

... delta inirq pid cpu command 60 761 39 0 0 4370 0 cat 60 761 40 1 1 4 368 0 cc1 60 761 41 1 1 4 368 0 cc1 60 761 41 0 1 2 0 ksoftirqd/0 60 761 41 0 1 2 0 ksoftirqd/0 60 761 41 0 1 2 0 ksoftirqd/0 As confirmed ... unloaded system: phon% dd bs=20 count=5 < /proc/jitsched 1 760 205 1 761 207 1 761 209 1 762 211 1 762 212 1 763 212 1 763 213 1 764 213 1 764 214 1 765 217 It’s i...

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 ... PCI devices contain. All PCI devices feature at least a 2 56- byte address space. The first 64 bytes are standard- ized, while the rest are device dependent. Figure 12-2 shows the lay...

Ngày tải lên: 09/08/2014, 04:21

... June 2001 16: 34 Chapter 1: An Introduction to Device Driver s Many device drivers, indeed, are released together with user programs to help with configuration and access to the target device. Those ... timer 0 060 -006f : keyboard 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 02f8-02ff : serial(set) 0300-031f : NE2000 03 76-...

Ngày tải lên: 13/08/2014, 21:21

... Structure struct file, defined in < ;linux/ fs.h>, is the second most important data structur e used in device drivers. Note that a file has nothing to do with the 66 22 June 2001 16: 35 The code for read ... advantages of devfs ar e as follows: • Device entry points in /dev ar e cr eated at device initialization and removed at device removal. • The device driver can specify...

Ngày tải lên: 13/08/2014, 21:21