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MdeModulePkg/AtaAtapiPassThru: valid ports transverse algo of AHCI controller is updated to handle inconsecutive case

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Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13932 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
erictian 2012-11-09 06:39:56 +00:00
parent f3b4867f94
commit 6b13aa602a
2 changed files with 14 additions and 1 deletions
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13
MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c
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@ -2202,8 +2202,19 @@ AhciModeInitialization (
return EFI_OUT_OF_RESOURCES; return EFI_OUT_OF_RESOURCES;
} }
for (Port = 0; Port < MaxPortNumber; Port ++) { for (Port = 0; Port < EFI_AHCI_MAX_PORTS; Port ++) {
if ((PortImplementBitMap & (BIT0 << Port)) != 0) { if ((PortImplementBitMap & (BIT0 << Port)) != 0) {
//
// According to AHCI spec, MaxPortNumber should be equal or greater than the number of implemented ports.
//
if ((MaxPortNumber--) == 0) {
//
// Should never be here.
//
ASSERT (FALSE);
return EFI_SUCCESS;
}
IdeInit->NotifyPhase (IdeInit, EfiIdeBeforeChannelEnumeration, Port); IdeInit->NotifyPhase (IdeInit, EfiIdeBeforeChannelEnumeration, Port);
// //

2
MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.h
View File

@ -26,6 +26,8 @@
#define EFI_AHCI_IS_OFFSET 0x0008 #define EFI_AHCI_IS_OFFSET 0x0008
#define EFI_AHCI_PI_OFFSET 0x000C #define EFI_AHCI_PI_OFFSET 0x000C
#define EFI_AHCI_MAX_PORTS 32
typedef struct { typedef struct {
UINT32 Lower32; UINT32 Lower32;
UINT32 Upper32; UINT32 Upper32;