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| author | gikidy <gikidy@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-11-24 07:54:01 +0000 |
|---|---|---|
| committer | gikidy <gikidy@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-11-24 07:54:01 +0000 |
| commit | badcbfb23811c02780d4ea7f20cd6ccf7b86f346 (patch) | |
| tree | 2eb0a9b9a993b2931da65ce4045bb654ec215374 /MdePkg/Include/Library/PciLib.h | |
| parent | aef389d31437b012871da02abc555ca7145e35bb (diff) | |
| download | edk2-platforms-badcbfb23811c02780d4ea7f20cd6ccf7b86f346.tar.xz | |
synchronize the files with the MDE_Library_Spec
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6701 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Include/Library/PciLib.h')
| -rw-r--r-- | MdePkg/Include/Library/PciLib.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/MdePkg/Include/Library/PciLib.h b/MdePkg/Include/Library/PciLib.h index d76ecee7c0..4e413aa9f1 100644 --- a/MdePkg/Include/Library/PciLib.h +++ b/MdePkg/Include/Library/PciLib.h @@ -1,5 +1,14 @@ /** @file
Provides services to access PCI Configuration Space.
+
+ These functions perform PCI configuration cycles using the default PCI configuration
+ access method. This may use I/O ports 0xCF8 and 0xCFC to perform PCI configuration accesses,
+ or it may use MMIO registers relative to the PcdPciExpressBaseAddress, or it may use some
+ alternate access method. Modules will typically use the PCI Library for its PCI configuration
+ accesses. However, if a module requires a mix of PCI access methods, the PCI CF8 Library or
+ PCI Express Library may be used in conjunction with the PCI Library. The functionality of
+ these three libraries is identical. The PCI CF8 Library and PCI Express Library simply use
+ explicit access methods.
Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. This program and the accompanying materials
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