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MdePkg: PciExpressLib support variable size MMCONF

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Add support for arbitrary sized MMCONF by introducing a new PCD.
Add a return value to point out invalid PCI addresses.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Marcello Sylvester Bauer <marcello.bauer@9elements.com>
Cc: Patrick Rudolph <patrick.rudolph@9elements.com>
Cc: Christian Walter <christian.walter@9elements.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
This commit is contained in:
Marcello Sylvester Bauer
2020-07-22 10:55:27 +02:00
committed by mergify[bot]
parent 28d7eea97e
commit 5c06585528
8 changed files with 584 additions and 114 deletions
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5
MdePkg/Include/Library/PciExpressLib.h
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@@ -2,8 +2,9 @@
Provides services to access PCI Configuration Space using the MMIO PCI Express window.
This library is identical to the PCI Library, except the access method for performing PCI
configuration cycles must be through the 256 MB PCI Express MMIO window whose base address
is defined by PcdPciExpressBaseAddress.
configuration cycles must be through the PCI Express MMIO window whose base address
is defined by PcdPciExpressBaseAddress and size defined by PcdPciExpressBaseSize.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent