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MdeModulePkg/Ufs: ensure the DBC field of UTP PRDT is dword-aligned

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According to UFS Host Controller Spec(JESD223), the bits 1:0 of this
DataByteCount field shall be 11b to indicate Dword granularity.

But the size of UFS Request Sense Data Response defined in UFS Spec
(JESD220C) is 18 which is not Dword aligned, we would have to round
down to the multiple of 4 to fill the DBC field to avoid bring issue
on some UFS HCs.

Cc: Hao Wu <hao.a.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by:   Hao Wu <hao.a.wu@intel.com>
This commit is contained in:
Feng Tian 2016-10-18 13:17:56 +08:00
parent 008e2ccf02
commit d945390d5f
2 changed files with 12 additions and 2 deletions
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7
MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsHci.c
View File

@ -1,6 +1,6 @@
/** @file
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -329,6 +329,11 @@ UfsInitUtpPrdt (
UINT8 *Remaining;
UINTN PrdtNumber;
if ((BufferSize & (BIT0 | BIT1)) != 0) {
BufferSize &= ~(BIT0 | BIT1);
DEBUG ((EFI_D_WARN, "UfsInitUtpPrdt: The BufferSize [%d] is not dword-aligned!\n", BufferSize));
}
if (BufferSize == 0) {
return EFI_SUCCESS;
}

7
MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
View File

@ -2,7 +2,7 @@
UfsPassThruDxe driver is used to produce EFI_EXT_SCSI_PASS_THRU protocol interface
for upper layer application to execute UFS-supported SCSI cmds.
Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -400,6 +400,11 @@ UfsInitUtpPrdt (
UINT8 *Remaining;
UINTN PrdtNumber;
if ((BufferSize & (BIT0 | BIT1)) != 0) {
BufferSize &= ~(BIT0 | BIT1);
DEBUG ((EFI_D_WARN, "UfsInitUtpPrdt: The BufferSize [%d] is not dword-aligned!\n", BufferSize));
}
if (BufferSize == 0) {
return EFI_SUCCESS;
}