2004-04-23 21:54:30 +02:00
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.\" $XFree86: xc/programs/Xserver/hw/xfree86/etc/pcitweak.man,v 3.3 2001/01/27 18:20:56 dawes Exp $
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2003-11-14 17:48:57 +01:00
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.TH PCITWEAK 1 __vendorversion__
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.SH NAME
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pcitweak - read/write PCI config space
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.SH SYNOPSIS
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.B pcitweak
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.B \-l
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.br
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.B pcitweak
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.B \-r
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.I PCI-ID
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.RB [ \-b | \-h ]
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.I offset
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.br
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.B pcitweak
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.B \-w
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.I PCI-ID
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.RB [ \-b | \-h ]
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.I offset
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.I value
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.SH DESCRIPTION
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.I Pcitweak
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is a utility that can be used to examine or change registers in the PCI
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2003-11-25 20:29:01 +01:00
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configuration space. On most platforms
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2003-11-14 17:48:57 +01:00
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.I pcitweak
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can only be run by the root user.
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.SH OPTIONS
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.TP 8
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.B \-l
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Probe the PCI buses and print a line for each detected device. Each line
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contains the bus location (bus:device:function), chip vendor/device, card
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(subsystem) vendor/card, revision, class and header type. All values
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printed are in hexadecimal.
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.TP 8
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.BI "\-r " PCI-ID
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Read the PCI configuration space register at
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.I offset
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for the PCI device at bus location
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.IR PCI-ID .
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.I PCI-ID
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should be given in the form bus:device:function, with each value in
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hexadecimal. By default, a 32-bit register is read.
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.TP 8
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.BI "\-w " PCI-ID
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Write
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.I value
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to the PCI configuration space register at
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.I offset
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for the PCI device at bus location
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.IR PCI-ID .
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.I PCI-ID
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should be given in the form bus:device:function, with each value in
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hexadecimal. By default, a 32-bit register is written.
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.TP 8
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.B \-b
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Read or write an 8-bit value (byte).
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.TP 8
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.B \-h
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Read or write a 16-bit value (halfword).
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.SH "SEE ALSO"
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scanpci(1)
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.SH AUTHORS
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David Dawes
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.RI ( dawes@xfree86.org ).
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