* [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly
@ 2017-11-03 8:28 Ruiyu Ni
2017-11-06 23:23 ` Laszlo Ersek
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Ruiyu Ni @ 2017-11-03 8:28 UTC (permalink / raw)
To: edk2-devel; +Cc: Star Zeng, Laszlo Ersek
The original code enables some BITs in PCI attributes in Start(),
but wrongly to disable these BITs in Stop().
The correct behavior is to save the original PCI attributes before
enables some BITs in Start(), and restore to original value
in Stop().
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
---
PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c | 44 +++++++++++++++++----------------
PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h | 3 ++-
2 files changed, 25 insertions(+), 22 deletions(-)
diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
index 32381b112d..60d2fb5a5b 100644
--- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
+++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
@@ -172,6 +172,7 @@ PcatIsaAcpiDriverBindingStart (
EFI_PCI_IO_PROTOCOL *PciIo;
PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
UINT64 Supports;
+ UINT64 OriginalAttributes;
BOOLEAN Enabled;
Enabled = FALSE;
@@ -210,9 +211,18 @@ PcatIsaAcpiDriverBindingStart (
if (Supports == 0 || Supports == (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16)) {
Status = EFI_UNSUPPORTED;
goto Done;
- }
+ }
+
+ Status = PciIo->Attributes (
+ PciIo,
+ EfiPciIoAttributeOperationGet,
+ 0,
+ &OriginalAttributes
+ );
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
- Enabled = TRUE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
@@ -222,7 +232,8 @@ PcatIsaAcpiDriverBindingStart (
if (EFI_ERROR (Status)) {
goto Done;
}
-
+
+ Enabled = TRUE;
//
// Allocate memory for the PCAT ISA ACPI Device structure
//
@@ -239,9 +250,10 @@ PcatIsaAcpiDriverBindingStart (
//
// Initialize the PCAT ISA ACPI Device structure
//
- PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
- PcatIsaAcpiDev->Handle = Controller;
- PcatIsaAcpiDev->PciIo = PciIo;
+ PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
+ PcatIsaAcpiDev->Handle = Controller;
+ PcatIsaAcpiDev->PciIo = PciIo;
+ PcatIsaAcpiDev->OriginalAttribute = OriginalAttributes;
//
// Initialize PcatIsaAcpiDeviceList
@@ -274,8 +286,8 @@ Done:
if (PciIo != NULL && Enabled) {
PciIo->Attributes (
PciIo,
- EfiPciIoAttributeOperationDisable,
- EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
+ EfiPciIoAttributeOperationSet,
+ OriginalAttributes,
NULL
);
}
@@ -321,7 +333,6 @@ PcatIsaAcpiDriverBindingStop (
EFI_STATUS Status;
EFI_ISA_ACPI_PROTOCOL *IsaAcpi;
PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
- UINT64 Supports;
//
// Get the ISA ACPI Protocol Interface
@@ -348,23 +359,14 @@ PcatIsaAcpiDriverBindingStop (
//
Status = PcatIsaAcpiDev->PciIo->Attributes (
PcatIsaAcpiDev->PciIo,
- EfiPciIoAttributeOperationSupported,
- 0,
- &Supports
+ EfiPciIoAttributeOperationSet,
+ PcatIsaAcpiDev->OriginalAttribute,
+ 0
);
if (EFI_ERROR (Status)) {
return Status;
}
- Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16);
-
- PcatIsaAcpiDev->PciIo->Attributes (
- PcatIsaAcpiDev->PciIo,
- EfiPciIoAttributeOperationDisable,
- EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
- NULL
- );
-
//
// Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL
//
diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
index 0671127644..3ad3a3f313 100644
--- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
+++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
@@ -1,7 +1,7 @@
/** @file
EFI PCAT ISA ACPI Driver for a Generic PC Platform
-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2017, 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
@@ -43,6 +43,7 @@ typedef struct {
EFI_HANDLE Handle;
EFI_ISA_ACPI_PROTOCOL IsaAcpi;
EFI_PCI_IO_PROTOCOL *PciIo;
+ UINT64 OriginalAttribute;
} PCAT_ISA_ACPI_DEV;
#define PCAT_ISA_ACPI_DEV_FROM_THIS(a) BASE_CR(a, PCAT_ISA_ACPI_DEV, IsaAcpi)
--
2.12.2.windows.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly
2017-11-03 8:28 [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly Ruiyu Ni
@ 2017-11-06 23:23 ` Laszlo Ersek
2017-11-07 5:35 ` Ni, Ruiyu
2017-11-07 8:43 ` Zeng, Star
2017-11-07 17:49 ` Laszlo Ersek
2 siblings, 1 reply; 6+ messages in thread
From: Laszlo Ersek @ 2017-11-06 23:23 UTC (permalink / raw)
To: Ruiyu Ni, edk2-devel; +Cc: Star Zeng, Shi, Steven
Hi Ray,
On 11/03/17 09:28, Ruiyu Ni wrote:
> The original code enables some BITs in PCI attributes in Start(),
> but wrongly to disable these BITs in Stop().
>
> The correct behavior is to save the original PCI attributes before
> enables some BITs in Start(), and restore to original value
> in Stop().
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
> Cc: Star Zeng <star.zeng@intel.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> ---
> PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c | 44 +++++++++++++++++----------------
> PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h | 3 ++-
> 2 files changed, 25 insertions(+), 22 deletions(-)
Is this for <https://bugzilla.tianocore.org/show_bug.cgi?id=405>?
If so, can you please add the reference to the commit message?
Also, I think we should ask Steven to test the patch. (CC'd.)
I'll try to comment more later.
Thanks
Laszlo
>
> diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> index 32381b112d..60d2fb5a5b 100644
> --- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> +++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> @@ -172,6 +172,7 @@ PcatIsaAcpiDriverBindingStart (
> EFI_PCI_IO_PROTOCOL *PciIo;
> PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
> UINT64 Supports;
> + UINT64 OriginalAttributes;
> BOOLEAN Enabled;
>
> Enabled = FALSE;
> @@ -210,9 +211,18 @@ PcatIsaAcpiDriverBindingStart (
> if (Supports == 0 || Supports == (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16)) {
> Status = EFI_UNSUPPORTED;
> goto Done;
> - }
> + }
> +
> + Status = PciIo->Attributes (
> + PciIo,
> + EfiPciIoAttributeOperationGet,
> + 0,
> + &OriginalAttributes
> + );
> + if (EFI_ERROR (Status)) {
> + goto Done;
> + }
>
> - Enabled = TRUE;
> Status = PciIo->Attributes (
> PciIo,
> EfiPciIoAttributeOperationEnable,
> @@ -222,7 +232,8 @@ PcatIsaAcpiDriverBindingStart (
> if (EFI_ERROR (Status)) {
> goto Done;
> }
> -
> +
> + Enabled = TRUE;
> //
> // Allocate memory for the PCAT ISA ACPI Device structure
> //
> @@ -239,9 +250,10 @@ PcatIsaAcpiDriverBindingStart (
> //
> // Initialize the PCAT ISA ACPI Device structure
> //
> - PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
> - PcatIsaAcpiDev->Handle = Controller;
> - PcatIsaAcpiDev->PciIo = PciIo;
> + PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
> + PcatIsaAcpiDev->Handle = Controller;
> + PcatIsaAcpiDev->PciIo = PciIo;
> + PcatIsaAcpiDev->OriginalAttribute = OriginalAttributes;
>
> //
> // Initialize PcatIsaAcpiDeviceList
> @@ -274,8 +286,8 @@ Done:
> if (PciIo != NULL && Enabled) {
> PciIo->Attributes (
> PciIo,
> - EfiPciIoAttributeOperationDisable,
> - EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
> + EfiPciIoAttributeOperationSet,
> + OriginalAttributes,
> NULL
> );
> }
> @@ -321,7 +333,6 @@ PcatIsaAcpiDriverBindingStop (
> EFI_STATUS Status;
> EFI_ISA_ACPI_PROTOCOL *IsaAcpi;
> PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
> - UINT64 Supports;
>
> //
> // Get the ISA ACPI Protocol Interface
> @@ -348,23 +359,14 @@ PcatIsaAcpiDriverBindingStop (
> //
> Status = PcatIsaAcpiDev->PciIo->Attributes (
> PcatIsaAcpiDev->PciIo,
> - EfiPciIoAttributeOperationSupported,
> - 0,
> - &Supports
> + EfiPciIoAttributeOperationSet,
> + PcatIsaAcpiDev->OriginalAttribute,
> + 0
> );
> if (EFI_ERROR (Status)) {
> return Status;
> }
>
> - Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16);
> -
> - PcatIsaAcpiDev->PciIo->Attributes (
> - PcatIsaAcpiDev->PciIo,
> - EfiPciIoAttributeOperationDisable,
> - EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
> - NULL
> - );
> -
> //
> // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL
> //
> diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> index 0671127644..3ad3a3f313 100644
> --- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> +++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> @@ -1,7 +1,7 @@
> /** @file
> EFI PCAT ISA ACPI Driver for a Generic PC Platform
>
> -Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
> +Copyright (c) 2006 - 2017, 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
> @@ -43,6 +43,7 @@ typedef struct {
> EFI_HANDLE Handle;
> EFI_ISA_ACPI_PROTOCOL IsaAcpi;
> EFI_PCI_IO_PROTOCOL *PciIo;
> + UINT64 OriginalAttribute;
> } PCAT_ISA_ACPI_DEV;
>
> #define PCAT_ISA_ACPI_DEV_FROM_THIS(a) BASE_CR(a, PCAT_ISA_ACPI_DEV, IsaAcpi)
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly
2017-11-06 23:23 ` Laszlo Ersek
@ 2017-11-07 5:35 ` Ni, Ruiyu
2017-11-07 8:14 ` Shi, Steven
0 siblings, 1 reply; 6+ messages in thread
From: Ni, Ruiyu @ 2017-11-07 5:35 UTC (permalink / raw)
To: Laszlo Ersek, Shi, Steven; +Cc: Zeng, Star, edk2-devel@lists.01.org
Laszlo,
Sure I will add the Bugzilla url in the commit message.
Steven,
Could you please check whether this patch can fix your "reconnect -r" hang?
Thanks/Ray
> -----Original Message-----
> From: Laszlo Ersek [mailto:lersek@redhat.com]
> Sent: Tuesday, November 7, 2017 7:23 AM
> To: Ni, Ruiyu <ruiyu.ni@intel.com>; edk2-devel@lists.01.org
> Cc: Zeng, Star <star.zeng@intel.com>; Shi, Steven <steven.shi@intel.com>
> Subject: Re: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes
> correctly
>
> Hi Ray,
>
> On 11/03/17 09:28, Ruiyu Ni wrote:
> > The original code enables some BITs in PCI attributes in Start(), but
> > wrongly to disable these BITs in Stop().
> >
> > The correct behavior is to save the original PCI attributes before
> > enables some BITs in Start(), and restore to original value in Stop().
> >
> > Contributed-under: TianoCore Contribution Agreement 1.1
> > Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
> > Cc: Star Zeng <star.zeng@intel.com>
> > Cc: Laszlo Ersek <lersek@redhat.com>
> > ---
> > PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c | 44
> > +++++++++++++++++----------------
> > PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h | 3 ++-
> > 2 files changed, 25 insertions(+), 22 deletions(-)
>
> Is this for <https://bugzilla.tianocore.org/show_bug.cgi?id=405>?
>
> If so, can you please add the reference to the commit message?
>
> Also, I think we should ask Steven to test the patch. (CC'd.)
>
> I'll try to comment more later.
>
> Thanks
> Laszlo
>
>
> >
> > diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> > b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> > index 32381b112d..60d2fb5a5b 100644
> > --- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> > +++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> > @@ -172,6 +172,7 @@ PcatIsaAcpiDriverBindingStart (
> > EFI_PCI_IO_PROTOCOL *PciIo;
> > PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
> > UINT64 Supports;
> > + UINT64 OriginalAttributes;
> > BOOLEAN Enabled;
> >
> > Enabled = FALSE;
> > @@ -210,9 +211,18 @@ PcatIsaAcpiDriverBindingStart (
> > if (Supports == 0 || Supports == (EFI_PCI_IO_ATTRIBUTE_ISA_IO |
> EFI_PCI_IO_ATTRIBUTE_ISA_IO_16)) {
> > Status = EFI_UNSUPPORTED;
> > goto Done;
> > - }
> > + }
> > +
> > + Status = PciIo->Attributes (
> > + PciIo,
> > + EfiPciIoAttributeOperationGet,
> > + 0,
> > + &OriginalAttributes
> > + );
> > + if (EFI_ERROR (Status)) {
> > + goto Done;
> > + }
> >
> > - Enabled = TRUE;
> > Status = PciIo->Attributes (
> > PciIo,
> > EfiPciIoAttributeOperationEnable, @@ -222,7
> > +232,8 @@ PcatIsaAcpiDriverBindingStart (
> > if (EFI_ERROR (Status)) {
> > goto Done;
> > }
> > -
> > +
> > + Enabled = TRUE;
> > //
> > // Allocate memory for the PCAT ISA ACPI Device structure
> > //
> > @@ -239,9 +250,10 @@ PcatIsaAcpiDriverBindingStart (
> > //
> > // Initialize the PCAT ISA ACPI Device structure
> > //
> > - PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
> > - PcatIsaAcpiDev->Handle = Controller;
> > - PcatIsaAcpiDev->PciIo = PciIo;
> > + PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
> > + PcatIsaAcpiDev->Handle = Controller;
> > + PcatIsaAcpiDev->PciIo = PciIo;
> > + PcatIsaAcpiDev->OriginalAttribute = OriginalAttributes;
> >
> > //
> > // Initialize PcatIsaAcpiDeviceList @@ -274,8 +286,8 @@ Done:
> > if (PciIo != NULL && Enabled) {
> > PciIo->Attributes (
> > PciIo,
> > - EfiPciIoAttributeOperationDisable,
> > - EFI_PCI_DEVICE_ENABLE | Supports |
> EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
> > + EfiPciIoAttributeOperationSet,
> > + OriginalAttributes,
> > NULL
> > );
> > }
> > @@ -321,7 +333,6 @@ PcatIsaAcpiDriverBindingStop (
> > EFI_STATUS Status;
> > EFI_ISA_ACPI_PROTOCOL *IsaAcpi;
> > PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
> > - UINT64 Supports;
> >
> > //
> > // Get the ISA ACPI Protocol Interface @@ -348,23 +359,14 @@
> > PcatIsaAcpiDriverBindingStop (
> > //
> > Status = PcatIsaAcpiDev->PciIo->Attributes (
> > PcatIsaAcpiDev->PciIo,
> > - EfiPciIoAttributeOperationSupported,
> > - 0,
> > - &Supports
> > + EfiPciIoAttributeOperationSet,
> > + PcatIsaAcpiDev->OriginalAttribute,
> > + 0
> > );
> > if (EFI_ERROR (Status)) {
> > return Status;
> > }
> >
> > - Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_ISA_IO |
> > EFI_PCI_IO_ATTRIBUTE_ISA_IO_16);
> > -
> > - PcatIsaAcpiDev->PciIo->Attributes (
> > - PcatIsaAcpiDev->PciIo,
> > - EfiPciIoAttributeOperationDisable,
> > - EFI_PCI_DEVICE_ENABLE | Supports |
> EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
> > - NULL
> > - );
> > -
> > //
> > // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL
> > //
> > diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> > b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> > index 0671127644..3ad3a3f313 100644
> > --- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> > +++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> > @@ -1,7 +1,7 @@
> > /** @file
> > EFI PCAT ISA ACPI Driver for a Generic PC Platform
> >
> > -Copyright (c) 2006 - 2011, Intel Corporation. All rights
> > reserved.<BR>
> > +Copyright (c) 2006 - 2017, 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
> > @@ -43,6 +43,7 @@ typedef struct {
> > EFI_HANDLE Handle;
> > EFI_ISA_ACPI_PROTOCOL IsaAcpi;
> > EFI_PCI_IO_PROTOCOL *PciIo;
> > + UINT64 OriginalAttribute;
> > } PCAT_ISA_ACPI_DEV;
> >
> > #define PCAT_ISA_ACPI_DEV_FROM_THIS(a) BASE_CR(a,
> PCAT_ISA_ACPI_DEV,
> > IsaAcpi)
> >
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly
2017-11-07 5:35 ` Ni, Ruiyu
@ 2017-11-07 8:14 ` Shi, Steven
0 siblings, 0 replies; 6+ messages in thread
From: Shi, Steven @ 2017-11-07 8:14 UTC (permalink / raw)
To: Ni, Ruiyu, Laszlo Ersek; +Cc: Zeng, Star, edk2-devel@lists.01.org
This patch can fix the Bug 405 issue (https://bugzilla.tianocore.org/show_bug.cgi?id=405). Thank you!
Steven Shi
Intel\SSG\STO\UEFI Firmware
Tel: +86 021-61166522
iNet: 821-6522
> -----Original Message-----
> From: Ni, Ruiyu
> Sent: Tuesday, November 7, 2017 1:36 PM
> To: Laszlo Ersek <lersek@redhat.com>; Shi, Steven <steven.shi@intel.com>
> Cc: Zeng, Star <star.zeng@intel.com>; edk2-devel@lists.01.org
> Subject: RE: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes
> correctly
>
> Laszlo,
> Sure I will add the Bugzilla url in the commit message.
>
> Steven,
> Could you please check whether this patch can fix your "reconnect -r" hang?
>
> Thanks/Ray
>
> > -----Original Message-----
> > From: Laszlo Ersek [mailto:lersek@redhat.com]
> > Sent: Tuesday, November 7, 2017 7:23 AM
> > To: Ni, Ruiyu <ruiyu.ni@intel.com>; edk2-devel@lists.01.org
> > Cc: Zeng, Star <star.zeng@intel.com>; Shi, Steven <steven.shi@intel.com>
> > Subject: Re: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes
> > correctly
> >
> > Hi Ray,
> >
> > On 11/03/17 09:28, Ruiyu Ni wrote:
> > > The original code enables some BITs in PCI attributes in Start(), but
> > > wrongly to disable these BITs in Stop().
> > >
> > > The correct behavior is to save the original PCI attributes before
> > > enables some BITs in Start(), and restore to original value in Stop().
> > >
> > > Contributed-under: TianoCore Contribution Agreement 1.1
> > > Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
> > > Cc: Star Zeng <star.zeng@intel.com>
> > > Cc: Laszlo Ersek <lersek@redhat.com>
> > > ---
> > > PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c | 44
> > > +++++++++++++++++----------------
> > > PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h | 3 ++-
> > > 2 files changed, 25 insertions(+), 22 deletions(-)
> >
> > Is this for <https://bugzilla.tianocore.org/show_bug.cgi?id=405>?
> >
> > If so, can you please add the reference to the commit message?
> >
> > Also, I think we should ask Steven to test the patch. (CC'd.)
> >
> > I'll try to comment more later.
> >
> > Thanks
> > Laszlo
> >
> >
> > >
> > > diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> > > b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> > > index 32381b112d..60d2fb5a5b 100644
> > > --- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> > > +++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> > > @@ -172,6 +172,7 @@ PcatIsaAcpiDriverBindingStart (
> > > EFI_PCI_IO_PROTOCOL *PciIo;
> > > PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
> > > UINT64 Supports;
> > > + UINT64 OriginalAttributes;
> > > BOOLEAN Enabled;
> > >
> > > Enabled = FALSE;
> > > @@ -210,9 +211,18 @@ PcatIsaAcpiDriverBindingStart (
> > > if (Supports == 0 || Supports == (EFI_PCI_IO_ATTRIBUTE_ISA_IO |
> > EFI_PCI_IO_ATTRIBUTE_ISA_IO_16)) {
> > > Status = EFI_UNSUPPORTED;
> > > goto Done;
> > > - }
> > > + }
> > > +
> > > + Status = PciIo->Attributes (
> > > + PciIo,
> > > + EfiPciIoAttributeOperationGet,
> > > + 0,
> > > + &OriginalAttributes
> > > + );
> > > + if (EFI_ERROR (Status)) {
> > > + goto Done;
> > > + }
> > >
> > > - Enabled = TRUE;
> > > Status = PciIo->Attributes (
> > > PciIo,
> > > EfiPciIoAttributeOperationEnable, @@ -222,7
> > > +232,8 @@ PcatIsaAcpiDriverBindingStart (
> > > if (EFI_ERROR (Status)) {
> > > goto Done;
> > > }
> > > -
> > > +
> > > + Enabled = TRUE;
> > > //
> > > // Allocate memory for the PCAT ISA ACPI Device structure
> > > //
> > > @@ -239,9 +250,10 @@ PcatIsaAcpiDriverBindingStart (
> > > //
> > > // Initialize the PCAT ISA ACPI Device structure
> > > //
> > > - PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
> > > - PcatIsaAcpiDev->Handle = Controller;
> > > - PcatIsaAcpiDev->PciIo = PciIo;
> > > + PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
> > > + PcatIsaAcpiDev->Handle = Controller;
> > > + PcatIsaAcpiDev->PciIo = PciIo;
> > > + PcatIsaAcpiDev->OriginalAttribute = OriginalAttributes;
> > >
> > > //
> > > // Initialize PcatIsaAcpiDeviceList @@ -274,8 +286,8 @@ Done:
> > > if (PciIo != NULL && Enabled) {
> > > PciIo->Attributes (
> > > PciIo,
> > > - EfiPciIoAttributeOperationDisable,
> > > - EFI_PCI_DEVICE_ENABLE | Supports |
> > EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
> > > + EfiPciIoAttributeOperationSet,
> > > + OriginalAttributes,
> > > NULL
> > > );
> > > }
> > > @@ -321,7 +333,6 @@ PcatIsaAcpiDriverBindingStop (
> > > EFI_STATUS Status;
> > > EFI_ISA_ACPI_PROTOCOL *IsaAcpi;
> > > PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
> > > - UINT64 Supports;
> > >
> > > //
> > > // Get the ISA ACPI Protocol Interface @@ -348,23 +359,14 @@
> > > PcatIsaAcpiDriverBindingStop (
> > > //
> > > Status = PcatIsaAcpiDev->PciIo->Attributes (
> > > PcatIsaAcpiDev->PciIo,
> > > - EfiPciIoAttributeOperationSupported,
> > > - 0,
> > > - &Supports
> > > + EfiPciIoAttributeOperationSet,
> > > + PcatIsaAcpiDev->OriginalAttribute,
> > > + 0
> > > );
> > > if (EFI_ERROR (Status)) {
> > > return Status;
> > > }
> > >
> > > - Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_ISA_IO |
> > > EFI_PCI_IO_ATTRIBUTE_ISA_IO_16);
> > > -
> > > - PcatIsaAcpiDev->PciIo->Attributes (
> > > - PcatIsaAcpiDev->PciIo,
> > > - EfiPciIoAttributeOperationDisable,
> > > - EFI_PCI_DEVICE_ENABLE | Supports |
> > EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
> > > - NULL
> > > - );
> > > -
> > > //
> > > // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL
> > > //
> > > diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> > > b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> > > index 0671127644..3ad3a3f313 100644
> > > --- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> > > +++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> > > @@ -1,7 +1,7 @@
> > > /** @file
> > > EFI PCAT ISA ACPI Driver for a Generic PC Platform
> > >
> > > -Copyright (c) 2006 - 2011, Intel Corporation. All rights
> > > reserved.<BR>
> > > +Copyright (c) 2006 - 2017, 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
> > > @@ -43,6 +43,7 @@ typedef struct {
> > > EFI_HANDLE Handle;
> > > EFI_ISA_ACPI_PROTOCOL IsaAcpi;
> > > EFI_PCI_IO_PROTOCOL *PciIo;
> > > + UINT64 OriginalAttribute;
> > > } PCAT_ISA_ACPI_DEV;
> > >
> > > #define PCAT_ISA_ACPI_DEV_FROM_THIS(a) BASE_CR(a,
> > PCAT_ISA_ACPI_DEV,
> > > IsaAcpi)
> > >
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly
2017-11-03 8:28 [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly Ruiyu Ni
2017-11-06 23:23 ` Laszlo Ersek
@ 2017-11-07 8:43 ` Zeng, Star
2017-11-07 17:49 ` Laszlo Ersek
2 siblings, 0 replies; 6+ messages in thread
From: Zeng, Star @ 2017-11-07 8:43 UTC (permalink / raw)
To: Ni, Ruiyu, edk2-devel@lists.01.org; +Cc: Laszlo Ersek, Zeng, Star
Some minor comments.
1. How about update structure field name 'OriginalAttribute' to be 'OriginalAttributes'?
2. The comments below in Stop() need to be updated accordingly.
//
// Get supported PCI attributes
//
3. Add the bugzilla link to the commit log.
With that fixed, Reviewed-by: Star Zeng <star.zeng@intel.com>
Thanks,
Star
-----Original Message-----
From: Ni, Ruiyu
Sent: Friday, November 3, 2017 4:29 PM
To: edk2-devel@lists.01.org
Cc: Zeng, Star <star.zeng@intel.com>; Laszlo Ersek <lersek@redhat.com>
Subject: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly
The original code enables some BITs in PCI attributes in Start(), but wrongly to disable these BITs in Stop().
The correct behavior is to save the original PCI attributes before enables some BITs in Start(), and restore to original value in Stop().
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
---
PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c | 44 +++++++++++++++++---------------- PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h | 3 ++-
2 files changed, 25 insertions(+), 22 deletions(-)
diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
index 32381b112d..60d2fb5a5b 100644
--- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
+++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
@@ -172,6 +172,7 @@ PcatIsaAcpiDriverBindingStart (
EFI_PCI_IO_PROTOCOL *PciIo;
PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
UINT64 Supports;
+ UINT64 OriginalAttributes;
BOOLEAN Enabled;
Enabled = FALSE;
@@ -210,9 +211,18 @@ PcatIsaAcpiDriverBindingStart (
if (Supports == 0 || Supports == (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16)) {
Status = EFI_UNSUPPORTED;
goto Done;
- }
+ }
+
+ Status = PciIo->Attributes (
+ PciIo,
+ EfiPciIoAttributeOperationGet,
+ 0,
+ &OriginalAttributes
+ );
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
- Enabled = TRUE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable, @@ -222,7 +232,8 @@ PcatIsaAcpiDriverBindingStart (
if (EFI_ERROR (Status)) {
goto Done;
}
-
+
+ Enabled = TRUE;
//
// Allocate memory for the PCAT ISA ACPI Device structure
//
@@ -239,9 +250,10 @@ PcatIsaAcpiDriverBindingStart (
//
// Initialize the PCAT ISA ACPI Device structure
//
- PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
- PcatIsaAcpiDev->Handle = Controller;
- PcatIsaAcpiDev->PciIo = PciIo;
+ PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
+ PcatIsaAcpiDev->Handle = Controller;
+ PcatIsaAcpiDev->PciIo = PciIo;
+ PcatIsaAcpiDev->OriginalAttribute = OriginalAttributes;
//
// Initialize PcatIsaAcpiDeviceList
@@ -274,8 +286,8 @@ Done:
if (PciIo != NULL && Enabled) {
PciIo->Attributes (
PciIo,
- EfiPciIoAttributeOperationDisable,
- EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
+ EfiPciIoAttributeOperationSet,
+ OriginalAttributes,
NULL
);
}
@@ -321,7 +333,6 @@ PcatIsaAcpiDriverBindingStop (
EFI_STATUS Status;
EFI_ISA_ACPI_PROTOCOL *IsaAcpi;
PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
- UINT64 Supports;
//
// Get the ISA ACPI Protocol Interface @@ -348,23 +359,14 @@ PcatIsaAcpiDriverBindingStop (
//
Status = PcatIsaAcpiDev->PciIo->Attributes (
PcatIsaAcpiDev->PciIo,
- EfiPciIoAttributeOperationSupported,
- 0,
- &Supports
+ EfiPciIoAttributeOperationSet,
+ PcatIsaAcpiDev->OriginalAttribute,
+ 0
);
if (EFI_ERROR (Status)) {
return Status;
}
- Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16);
-
- PcatIsaAcpiDev->PciIo->Attributes (
- PcatIsaAcpiDev->PciIo,
- EfiPciIoAttributeOperationDisable,
- EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
- NULL
- );
-
//
// Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL
//
diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
index 0671127644..3ad3a3f313 100644
--- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
+++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
@@ -1,7 +1,7 @@
/** @file
EFI PCAT ISA ACPI Driver for a Generic PC Platform
-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2017, 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
@@ -43,6 +43,7 @@ typedef struct {
EFI_HANDLE Handle;
EFI_ISA_ACPI_PROTOCOL IsaAcpi;
EFI_PCI_IO_PROTOCOL *PciIo;
+ UINT64 OriginalAttribute;
} PCAT_ISA_ACPI_DEV;
#define PCAT_ISA_ACPI_DEV_FROM_THIS(a) BASE_CR(a, PCAT_ISA_ACPI_DEV, IsaAcpi)
--
2.12.2.windows.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly
2017-11-03 8:28 [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly Ruiyu Ni
2017-11-06 23:23 ` Laszlo Ersek
2017-11-07 8:43 ` Zeng, Star
@ 2017-11-07 17:49 ` Laszlo Ersek
2 siblings, 0 replies; 6+ messages in thread
From: Laszlo Ersek @ 2017-11-07 17:49 UTC (permalink / raw)
To: Ruiyu Ni, edk2-devel; +Cc: Star Zeng
On 11/03/17 09:28, Ruiyu Ni wrote:
> The original code enables some BITs in PCI attributes in Start(),
> but wrongly to disable these BITs in Stop().
>
> The correct behavior is to save the original PCI attributes before
> enables some BITs in Start(), and restore to original value
> in Stop().
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
> Cc: Star Zeng <star.zeng@intel.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> ---
> PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c | 44 +++++++++++++++++----------------
> PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h | 3 ++-
> 2 files changed, 25 insertions(+), 22 deletions(-)
I see that Star commented already; I agree with his points. Beyond them,
I have some comments of my own:
> diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> index 32381b112d..60d2fb5a5b 100644
> --- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
> +++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.c
(1) The copyright notice is updated in the header file. For consistency,
I think you might want to do the same in the C file.
> @@ -172,6 +172,7 @@ PcatIsaAcpiDriverBindingStart (
> EFI_PCI_IO_PROTOCOL *PciIo;
> PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
> UINT64 Supports;
> + UINT64 OriginalAttributes;
> BOOLEAN Enabled;
>
> Enabled = FALSE;
> @@ -210,9 +211,18 @@ PcatIsaAcpiDriverBindingStart (
> if (Supports == 0 || Supports == (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16)) {
> Status = EFI_UNSUPPORTED;
> goto Done;
> - }
> + }
> +
> + Status = PciIo->Attributes (
> + PciIo,
> + EfiPciIoAttributeOperationGet,
> + 0,
> + &OriginalAttributes
> + );
> + if (EFI_ERROR (Status)) {
> + goto Done;
> + }
>
> - Enabled = TRUE;
> Status = PciIo->Attributes (
> PciIo,
> EfiPciIoAttributeOperationEnable,
> @@ -222,7 +232,8 @@ PcatIsaAcpiDriverBindingStart (
> if (EFI_ERROR (Status)) {
> goto Done;
> }
> -
> +
> + Enabled = TRUE;
> //
> // Allocate memory for the PCAT ISA ACPI Device structure
> //
> @@ -239,9 +250,10 @@ PcatIsaAcpiDriverBindingStart (
> //
> // Initialize the PCAT ISA ACPI Device structure
> //
> - PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
> - PcatIsaAcpiDev->Handle = Controller;
> - PcatIsaAcpiDev->PciIo = PciIo;
> + PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;
> + PcatIsaAcpiDev->Handle = Controller;
> + PcatIsaAcpiDev->PciIo = PciIo;
> + PcatIsaAcpiDev->OriginalAttribute = OriginalAttributes;
>
> //
> // Initialize PcatIsaAcpiDeviceList
> @@ -274,8 +286,8 @@ Done:
> if (PciIo != NULL && Enabled) {
> PciIo->Attributes (
> PciIo,
> - EfiPciIoAttributeOperationDisable,
> - EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
> + EfiPciIoAttributeOperationSet,
> + OriginalAttributes,
> NULL
> );
> }
> @@ -321,7 +333,6 @@ PcatIsaAcpiDriverBindingStop (
> EFI_STATUS Status;
> EFI_ISA_ACPI_PROTOCOL *IsaAcpi;
> PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;
> - UINT64 Supports;
>
> //
> // Get the ISA ACPI Protocol Interface
> @@ -348,23 +359,14 @@ PcatIsaAcpiDriverBindingStop (
> //
> Status = PcatIsaAcpiDev->PciIo->Attributes (
> PcatIsaAcpiDev->PciIo,
> - EfiPciIoAttributeOperationSupported,
> - 0,
> - &Supports
> + EfiPciIoAttributeOperationSet,
> + PcatIsaAcpiDev->OriginalAttribute,
> + 0
> );
(2) For better edk2 style, the last argument should be NULL, not 0.
(3) (Mentioned earlier, also by Star) -- please add the TianoCore BZ
reference (#405).
With those fixed,
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Thanks!
Laszlo
> if (EFI_ERROR (Status)) {
> return Status;
> }
>
> - Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16);
> -
> - PcatIsaAcpiDev->PciIo->Attributes (
> - PcatIsaAcpiDev->PciIo,
> - EfiPciIoAttributeOperationDisable,
> - EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,
> - NULL
> - );
> -
> //
> // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL
> //
> diff --git a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> index 0671127644..3ad3a3f313 100644
> --- a/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> +++ b/PcAtChipsetPkg/IsaAcpiDxe/PcatIsaAcpi.h
> @@ -1,7 +1,7 @@
> /** @file
> EFI PCAT ISA ACPI Driver for a Generic PC Platform
>
> -Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
> +Copyright (c) 2006 - 2017, 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
> @@ -43,6 +43,7 @@ typedef struct {
> EFI_HANDLE Handle;
> EFI_ISA_ACPI_PROTOCOL IsaAcpi;
> EFI_PCI_IO_PROTOCOL *PciIo;
> + UINT64 OriginalAttribute;
> } PCAT_ISA_ACPI_DEV;
>
> #define PCAT_ISA_ACPI_DEV_FROM_THIS(a) BASE_CR(a, PCAT_ISA_ACPI_DEV, IsaAcpi)
>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2017-11-07 17:46 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-11-03 8:28 [PATCH] PcAtChipsetPkg/IsaAcpiDxe: Restore PCI attributes correctly Ruiyu Ni
2017-11-06 23:23 ` Laszlo Ersek
2017-11-07 5:35 ` Ni, Ruiyu
2017-11-07 8:14 ` Shi, Steven
2017-11-07 8:43 ` Zeng, Star
2017-11-07 17:49 ` Laszlo Ersek
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