linux device drivers third edition
Tài liệu Linux Device Drivers Linux Device Drivers, Third Edition pot
... An attribution usually includes the
title, author, publisher, and ISBN. For example: Linux Device Drivers, Third Edi-
tion, by Jonathan Corbet, Alessandro Rubini, and Greg Kroah-Hartman. Copyright
2005 ... the sample drivers in this book, UML is not yet useful
for debugging drivers that have to deal with real hardware.
See http://user-mode -linux. sf.net/ for more information on UML...
o'reilly - linux device drivers 2nd edition
... ONE
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 of ... supported by Linux, somebody somewhere has written
a driver to make it work with the system. Without device drivers, there is no func-
tioning system.
Device drivers take on a s...
Tài liệu Linux Device Drivers-Chapter 1 :An Introduction to Device Drivers ppt
... 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 ... 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...
Tài liệu Linux Device Drivers-Chapter 2 : Building and Running Modules pptx
... Chapter 1, "An Introduction to Device
Drivers& quot;.
#define MODULE
#include < ;linux/ module.h>
to use your driver at the same time. Most devices are capable of interrupting ... 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 t...
Tài liệu Linux Device Drivers-Chapter 3: Char Drivers docx
... /dev/$ {device} [0-3]
major=`awk "\\$2==\"$module\" {print \\$1}"
/proc/devices`
mknod /dev/$ {device} 0 c $major 0
mknod /dev/$ {device} 1 c $major 1
mknod /dev/$ {device} 2 ... random-access device, one device or many, and so on.
To make scull be useful as a template for writing real drivers for real
devices, we'll show you how to implement several...
Tài liệu Linux Device Drivers-Chapter 4 : Debugging Techniques pptx
... limit;
i++) {
Scull_Dev *d = &scull_devices[i];
if (down_interruptible(&d->sem))
return -ERESTARTSYS;
len += sprintf(buf+len,"\nDevice %i: qset
%i, q %i, sz %li\n", ... related to serious hardware or software
failures.
KERN_ERR
Used to report error conditions; device drivers will often use
KERN_ERR to report hardware difficulties.
}
This is a fairly ty...
Tài liệu Linux Device Drivers-Chapter 5 : Enhanced Char Driver Operations pptx
... Driver Operations
In Chapter 3, "Char Drivers& quot;, we built a complete device driver that the user
can write to and read from. But a real device usually offers more
functionality than ...
sometimes it's a useful approach to device control and is used by tty's and
other devices. We'll describe it later in this chapter in " ;Device Control
Without ioctl&...
Tài liệu Linux Device Drivers-Chapter 6 : Flow of Time pptx
... available in Linux 2.0, sysdep.h fills the gap.
Task Queues
One feature many drivers need is the ability to schedule execution of some
tasks at a later time without resorting to interrupts. Linux ...
#include < ;linux/ delay.h>
void udelay(unsigned long usecs);
Chapter 6 : Flow of Time
At this point, we know the basics of how to write a full-featured char
module. Real-world...
Tài liệu Linux Device Drivers-Chapter 7 : Getting Hold of Memory doc
... 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 ... 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 u...
Tài liệu Linux Device Drivers-Chapter 8 :Hardware Management docx
... scull and similar 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 ... easy to
use.
I/O Ports and I/O Memory
Every peripheral device is controlled by writing and reading its registers.
Most of the time a device has several registers, and they are ac...
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