Tài liệu Linux Device Drivers-Chapter 8 :Hardware Management docx

... definition: Chapter 8 :Hardware Management Although playing with scull and similar toys is a good introduction to the software interface of a Linux device driver, implementing a real device requires ... addresses are either burned in device logic circuits, statically assigned in local device memory, or set by means of physical jumpers. The latter is true of PCI device...

Ngày tải lên: 24/12/2013, 01:17

... 1 :An Introduction to Device Drivers As the popularity of the Linux system continues to grow, the interest in writing Linux device drivers steadily increases. Most of Linux is independent ... because more and more functionality in Linux is being modularized. Classes of Devices and Modules The Unix way of looking at devices distinguishes between three device types. Each mod...

Ngày tải lên: 24/12/2013, 01:17

... Kernel code 0022c5 58- 0024455f : Kernel data 20000000-2fffffff : Intel Corporation 440BX/ZX - 82 443BX/ZX Host bridge 680 00000- 680 00fff : Texas Instruments PCI1225 680 01000- 680 01fff : Texas ... pcnet_cs 1400-141f : Intel Corporation 82 371AB PIIX4 ACPI 180 0-18ff : PCI CardBus #02 1c00-1cff : PCI CardBus #04 580 0- 581 f : Intel Corporation 82 371AB PIIX4 USB d000-...

Ngày tải lên: 24/12/2013, 01:17

... 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); ... Allocation of Major Numbers Some major device numbers are statically assigned to the most common devices. A list of those devices can be found in Documentation/devices.txt within the kernel s...

Ngày tải lên: 24/12/2013, 01:17

... c2c55b00 esi: 080 4d0 38 edi: 080 4d0 38 ebp: c2337f8c esp: c2337f8c ds: 00 18 es: 00 18 ss: 00 18 Process cat (pid: 23413, stackpage=c2337000) Stack: 00000001 c01356e6 c2c55ae0 080 4d0 38 00000001 c2c55b00 ... 00000000010001 28 TNPC: 0000000000457fbc \ Y: 0 080 0000 g0: 000000007002ea 88 g1: 0000000000000004 g2: 0000000070029fb0 \ g3: 00000000000000 18 g4: fffff800000000...

Ngày tải lên: 24/12/2013, 01:17

... 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 device. For ... on the device, but some other operations should be denied. For example, not all users of a tape drive should be able to set its default block size, and the ability to work with a disk...

Ngày tải lên: 24/12/2013, 01:17

... call like gettime: 84 6157215.939950 xtime: 84 6157215.931 188 jiffies: 13 080 94 gettime: 84 6157215.942465 xtime: 84 6157215.941 188 jiffies: 13 080 95 Delaying Execution Device drivers often ... time. 601 687 0 0 2 1 keventd 601 687 0 0 2 1 keventd 601 687 0 0 2 1 keventd 601 687 0 0 2 1 keventd 601 687 0 0 2 1 keventd 601 687 0 0 2 1 keventd 601 687 0 0 2 1 keventd...

Ngày tải lên: 24/12/2013, 01:17

... /proc/scullvmem Device 0: qset 500, order 4, sz 10 485 76 item at c4 184 b80, qset at c71c4000 0:c 881 a000 1:c 882 b000 rudo% uname -m i 686 The values show two different behaviors. On IA-64, ... Patch Device 0: qset 500, order 0, sz 10 485 76 item at c4 184 780 , qset at c71c 480 0 0:c262b000 1:c2193000 rudo% cat /tmp/bigfile > /dev/scullv0; head -5 /proc/scullv...

Ngày tải lên: 24/12/2013, 01:17

... 1122334455 > /dev/shortint ; cat /dev/shortint bh after 5 50 588 804 .87 6653 50 588 804 .87 6693 50 588 804 .87 6720 50 588 804 .87 6747 50 588 804 .87 6774 The actual timings that you will see will vary, of ... IO-APIC-level eth0 9: 0 0 IO-APIC-level acpi 10: 565910 565269 IO-APIC-level aic7xxx 12: 88 9091 88 4276 IO-APIC-edge PS/2 Mouse 13: 1 0 XT-PIC fpu 15: 175966...

Ngày tải lên: 24/12/2013, 01:17

... long- long u8 u16 u32 u64 i 386 1 2 4 4 4 4 1 2 4 4 i 686 1 2 4 4 4 4 1 2 4 4 alpha 1 2 4 8 8 8 1 2 4 8 armv4l 1 2 4 4 4 4 1 2 4 4 ia64 1 2 4 8 8 8 1 2 4 8 mips 1 2 4 4 4 8 1 2 4 8 ppc ... list_entry(entry, type, member); sparc64 1 2 4 4 4 8 1 2 4 8 kernel: arch Align: char short int long ptr long- long u8 u16 u32 u64 kernel: sparc64 1 2 4 8 8 8 1...

Ngày tải lên: 24/12/2013, 01:17