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MdeModulePkg/AtaAtapiPassThru: cache EnabledPciAttributes 

Both AtaAtapiPassThruStart() and AtaAtapiPassThruStop() fetch the
supported attributes of the device, just so they can toggle the
IO+MMIO+BusMaster subset.

After we compute this bitmask in AtaAtapiPassThruStart(), we can cache it
for later, and save the fetch in AtaAtapiPassThruStop().

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Laszlo Ersek 2017-09-07 20:56:39 +02:00
parent 3281ebb4ae
commit eed3f71305
2 changed files with 13 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c
View File

@ -94,6 +94,7 @@ ATA_ATAPI_PASS_THRU_INSTANCE gAtaAtapiPassThruInstanceTemplate = {
NULL,
NULL
},
0, // EnabledPciAttributes
0, // OriginalAttributes
0, // PreviousPort
0, // PreviousPortMultiplier
@ -670,7 +671,7 @@ AtaAtapiPassThruStart (
EFI_IDE_CONTROLLER_INIT_PROTOCOL *IdeControllerInit;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 Supports;
UINT64 EnabledPciAttributes;
UINT64 OriginalPciAttributes;
Status = EFI_SUCCESS;
@ -722,14 +723,14 @@ AtaAtapiPassThruStart (
PciIo,
EfiPciIoAttributeOperationSupported,
0,
&Supports
&EnabledPciAttributes
);
if (!EFI_ERROR (Status)) {
Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;
EnabledPciAttributes &= (UINT64)EFI_PCI_DEVICE_ENABLE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
Supports,
EnabledPciAttributes,
NULL
);
}
@ -749,6 +750,7 @@ AtaAtapiPassThruStart (
Instance->ControllerHandle = Controller;
Instance->IdeControllerInit = IdeControllerInit;
Instance->PciIo = PciIo;
Instance->EnabledPciAttributes = EnabledPciAttributes;
Instance->OriginalPciAttributes = OriginalPciAttributes;
Instance->AtaPassThru.Mode = &Instance->AtaPassThruMode;
Instance->ExtScsiPassThru.Mode = &Instance->ExtScsiPassThruMode;
@ -859,7 +861,6 @@ AtaAtapiPassThruStop (
EFI_ATA_PASS_THRU_PROTOCOL *AtaPassThru;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_AHCI_REGISTERS *AhciRegisters;
UINT64 Supports;
DEBUG ((EFI_D_INFO, "==AtaAtapiPassThru Stop== Controller = %x\n", Controller));
@ -952,21 +953,12 @@ AtaAtapiPassThruStop (
//
// Disable this ATA host controller.
//
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSupported,
0,
&Supports
);
if (!EFI_ERROR (Status)) {
Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationDisable,
Supports,
NULL
);
}
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationDisable,
Instance->EnabledPciAttributes,
NULL
);
//
// Restore original PCI attributes

1
MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.h
View File

@ -100,6 +100,7 @@ typedef struct {
// The attached device list
//
LIST_ENTRY DeviceList;
UINT64 EnabledPciAttributes;
UINT64 OriginalPciAttributes;
//