linux device drivers 2nd edition phần 10 pdf
linux device drivers 2nd edition phần 10 pdf
... memory)
DEVICE_ NAME symbol, 329, 367
DEVICE_ NO_RANDOM symbol, 329
DEVICE_ NR symbol, 329, 367
minor_shift value and, 356
DEVICE_ OFF macro, 329
DEVICE_ ON macro, 329
DEVICE_ REQUEST symbol, 329
device- dependent ... 86
device control operations, 5
device entry points, filesystem for, 85-91
device files, 55
contr olling access, 164-171
deleting, 61
device filesystem (see devfs)...
linux device drivers 2nd edition phần 4 pdf
... an x86 device that
plugs into the PCI bus can perfor m DMA with all nor mal memory.
210
22 June 2001 16:38
Chapter 5: Enhanced Char Driver Operations
Clearly this is possible only if the device ... /dev/scullpriv device node implements virtual devices within the scull pack-
age. The scullpriv implementation uses the minor number of the process’s control-
ling tty as a key to access th...
linux device drivers 2nd edition phần 5 pdf
... #
noninverted
inverted
1
13
14
25
498765 32
276543 10
Data port: base_addr + 0
Status port: base_addr + 1
11 10 12 13 15
276543 10
1617 14 1
276543 10
Control port: base_addr + 2
irq enable
KEY
Figur ... reporting. Writing
to the device generates one interrupt every other byte; reading the device gives
the time when each interrupt was reported.
If you connect together pins 9 and...
linux device drivers 2nd edition phần 6 pdf
... 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-oriented devices—those that ... char device using the same
major number since the two ranges are separate.
The functions for registering and unregistering block devices look similar to those
for char devices:
#...
linux device drivers 2nd edition phần 7 pdf
... /usr/X11R6/bin/XF86_SVGA
40015000-40019000 rw-s fe2fc000 08:01 107 78 /dev/mem
401 3100 0-401 4100 0 rw-s 000a0000 08:01 107 78 /dev/mem
401 4100 0-409 4100 0 rw-s f4000000 08:01 107 78 /dev/mem
The full list of the X server’s ... 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...
LINUX DEVICE DRIVERS 3rd edition phần 4 pdf
... 2005 10: 47 AM
This is the Title of the Book, eMatter Edition
Copyright © 2005 O’Reilly & Associates, Inc. All rights reserved.
210
|
Chapter 7: Time, Delays, and Deferred Work
#include < ;linux/ delay.h>
void ... discussion of
device methods.
static int scull_c_release(struct inode *inode, struct file *filp)
{
/*
* Nothing to do, because the device is persistent.
* A `re...
LINUX DEVICE DRIVERS 3rd edition phần 10 pps
... 322
NuBus, 324
PC /104 and PC /104 +, 322
SBus, 323
searching, 326
VLB, 323
pci_bus_type variable, 392
PCI_CLASS variable, 400
PCI _DEVICE macro, 310
PCI _DEVICE_ CLASS macro, 310
PCI_DMA_FROMDEVICE symbol, ... sysfs operations, 371–375
lifecycles, 391–397
Linux Documentation Project web site, 576
Linux Trace Toolkit (LTT), 105
linux- kernel mailing list, 12, 299
LINUX_ VERSION_CODE...
linux device drivers 2nd edition phần 1 ppt
... vga+
03f6-03f6 : ide0
03f8-03ff : serial(set)
100 0 -103 f : Intel Corporation 82371AB PIIX4 ACPI
100 0 -100 3 : acpi
100 4 -100 5 : acpi
100 8 -100 b : acpi
100 c -100 f : acpi
1100 -110f : Intel Corporation 82371AB PIIX4 ... because more and more functionality in Linux is being modular-
ized.
Classes of Devices and Modules
The Unix way of looking at devices distinguishes between thr...
linux device drivers 2nd edition phần 2 doc
... 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 device names, ownership, and permission ... device_ close instead of
device_ release. Either way, the device method should perfor m the following
tasks:
• Deallocate anything that open allocated in filp->priva...
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