From: "Sumana Venur" <sumana.venur@intel.com>
To: devel@edk2.groups.io
Cc: Sumana Venur <sumana.venur@intel.com>
Subject: [PATCH] MdeModulePkg/Bus/Pci/PciBusDxe: Increase the width of the data read during oprom shadow
Date: Fri, 11 Jun 2021 09:37:44 -0700 [thread overview]
Message-ID: <20210611163744.19368-1-sumana.venur@intel.com> (raw)
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2989
Long times spent on shadowing oprom from graphics card to system memory. We are currently using 8 bit read cycles.
This needs to be wider, at least 32bit reads to reduce the time for oprom shadow
Signed-off-by: Sumana Venur <sumana.venur@intel.com>
---
MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c
index c994ed5fe3..a981f93f43 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c
@@ -521,9 +521,9 @@ LoadOpRomImage (
//
PciDevice->PciRootBridgeIo->Mem.Read (
PciDevice->PciRootBridgeIo,
- EfiPciWidthUint8,
+ EfiPciWidthUint32,
RomBar,
- (UINT32) RomImageSize,
+ (UINT32) RomImageSize/sizeof(UINT32),
Image
);
RomInMemory = Image;
--
2.16.2.windows.1
next reply other threads:[~2021-06-11 16:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 16:37 Sumana Venur [this message]
2021-06-11 17:01 ` [PATCH] MdeModulePkg/Bus/Pci/PciBusDxe: Increase the width of the data read during oprom shadow Sumana Venur
2021-06-17 1:33 ` 回复: [edk2-devel] " gaoliming
2021-06-23 10:19 ` Laszlo Ersek
-- strict thread matches above, loose matches on Subject: below --
2021-01-08 4:05 Sumana Venur
2021-01-08 2:32 Sumana Venur
2021-01-07 6:29 Sumana Venur
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