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In IdeBus driver block I/O read/write interface, it will always try to use UDMA mode first, if fails, then try to use PIO mode.

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This may cause side effects if disk does not support UDMA mode and also let bad performance. 
The modification is to record supported mode and only try supported mode when do disk read/write. 
Also this patch combines the code for read/readex/write/writex to reduce code size.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2412 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
klu2
2007-03-02 08:21:43 +00:00
parent 59e9a3659f
commit bc4e770c78
4 changed files with 291 additions and 1155 deletions
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2
EdkModulePkg/Bus/Pci/IdeBus/Dxe/idebus.h
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@@ -65,7 +65,7 @@ typedef struct {
INQUIRY_DATA *pInquiryData;
EFI_IDENTIFY_DATA *pIdData;
ATA_PIO_MODE PioMode;
ATA_UDMA_MODE UDma_Mode;
EFI_ATA_MODE UdmaMode;
CHAR8 ModelName[41];
REQUEST_SENSE_DATA *SenseData;
UINT8 SenseDataNumber;