* [edk2-devel] [PATCH] DynamicTablesPkg: IORT generator updates for Rev E.e spec
@ 2023-09-22 21:40 Swatisri Kantamsetti via groups.io
2023-09-25 9:19 ` Sami Mujawar
2023-09-25 9:40 ` Leif Lindholm
0 siblings, 2 replies; 4+ messages in thread
From: Swatisri Kantamsetti via groups.io @ 2023-09-22 21:40 UTC (permalink / raw)
To: devel, Sami.Mujawar, pierre.gondois; +Cc: Swatisri Kantamsetti
The IO Remapping Table, Platform Design Document, Revision E.e,
Sept 2022 (https://developer.arm.com/documentation/den0049/ee)
added flags in SMMUv3 node for validity of ID mappings for MSIs
related to control interrupts.
It makes one small addition to SMMUv3 nodes to
describe MSI support independently of wired GSIV support
Therefore, update the IORT generator to:
- increment IORT table revision to 6
- increment SMMUV3 node revision to 5
- for SMMUV3 node revision >=5 check the DeviceID mapping index
valid flag to populate DeviceIdMappingIndex field
Signed-off-by: Swatisri Kantamsetti <swatisrik@nvidia.com>
---
.../Acpi/Arm/AcpiIortLibArm/IortGenerator.c | 35 +++++++++++++++----
1 file changed, 28 insertions(+), 7 deletions(-)
diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
index f28973c1a8..a6e4b49cb1 100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
@@ -5,7 +5,7 @@
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Reference(s):
- - IO Remapping Table, Platform Design Document, Revision E.d, Feb 2022
+ - IO Remapping Table, Platform Design Document, Revision E.e, Sept 2022
(https://developer.arm.com/documentation/den0049/)
**/
@@ -1554,9 +1554,14 @@ AddSmmuV3Nodes (
{
SmmuV3Node->Node.Revision = 2;
SmmuV3Node->Node.Identifier = EFI_ACPI_RESERVED_DWORD;
- } else {
+ } else if (AcpiTableInfo->AcpiTableRevision <
+ EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06)
+ {
SmmuV3Node->Node.Revision = 4;
SmmuV3Node->Node.Identifier = NodeList->Identifier;
+ } else {
+ SmmuV3Node->Node.Revision = 5;
+ SmmuV3Node->Node.Identifier = NodeList->Identifier;
}
// SMMUv3 specific data
@@ -1577,11 +1582,27 @@ AddSmmuV3Nodes (
SmmuV3Node->ProximityDomain = 0;
}
- if ((SmmuV3Node->Event != 0) && (SmmuV3Node->Pri != 0) &&
- (SmmuV3Node->Gerr != 0) && (SmmuV3Node->Sync != 0))
+ /* For older SMMUV3 nodes rev. < 5.
+ If all the SMMU control interrupts are GSIV based,
+ the DeviceID mapping index field is ignored.
+ DeviceID mapping valid flag was introduced in IORT rev E.e
+ for SMMUV3 nodes rev. > 5.
+ If the DeviceID mapping index valid flag is set to 0,
+ DeviceID mapping index field must be ignored.
+ Where the SMMU uses message signaled interrupts for
+ its control interrupts, DeviceId Mapping Index contains an
+ index into the array of ID mapping.
+ */
+ if (((SmmuV3Node->Node.Revision < 5) &&
+ (SmmuV3Node->Event != 0) &&
+ (SmmuV3Node->Pri != 0) &&
+ (SmmuV3Node->Gerr != 0) &&
+ (SmmuV3Node->Sync != 0)
+ ) ||
+ ((SmmuV3Node->Node.Revision >= 5) &&
+ ((SmmuV3Node->Flags & EFI_ACPI_IORT_SMMUv3_FLAG_DEVICEID_VALID) == 0))
+ )
{
- // If all the SMMU control interrupts are GSIV based,
- // the DeviceID mapping index field is ignored.
SmmuV3Node->DeviceIdMappingIndex = 0;
} else {
SmmuV3Node->DeviceIdMappingIndex = NodeList->DeviceIdMappingIndex;
@@ -2819,7 +2840,7 @@ ACPI_IORT_GENERATOR IortGenerator = {
// ACPI Table Signature
EFI_ACPI_6_4_IO_REMAPPING_TABLE_SIGNATURE,
// ACPI Table Revision supported by this Generator
- EFI_ACPI_IO_REMAPPING_TABLE_REVISION_05,
+ EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06,
// Minimum supported ACPI Table Revision
EFI_ACPI_IO_REMAPPING_TABLE_REVISION_00,
// Creator ID
--
2.17.1
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* Re: [edk2-devel] [PATCH] DynamicTablesPkg: IORT generator updates for Rev E.e spec
2023-09-22 21:40 [edk2-devel] [PATCH] DynamicTablesPkg: IORT generator updates for Rev E.e spec Swatisri Kantamsetti via groups.io
@ 2023-09-25 9:19 ` Sami Mujawar
2023-09-25 9:40 ` Leif Lindholm
1 sibling, 0 replies; 4+ messages in thread
From: Sami Mujawar @ 2023-09-25 9:19 UTC (permalink / raw)
To: Swatisri Kantamsetti, devel, pierre.gondois, nd@arm.com
Hi Swatisri,
Thank you for this patch.
I believe this was reviewed intially at
https://edk2.groups.io/g/devel/topic/96534672#99048 and I see you have
addressed the feedback in this patch.
I also see that patch 2/2 from your previous series was already merged.
Can you increment the revision for the patch series (even if some
patches get merged) in future, please? It helps keep track of the review
history.
Other than that this patch looks good to me and I will queue this for
merging.
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Regards,
Sami Mujawar
On 22/09/2023 10:40 pm, Swatisri Kantamsetti wrote:
> The IO Remapping Table, Platform Design Document, Revision E.e,
> Sept 2022 (https://developer.arm.com/documentation/den0049/ee)
> added flags in SMMUv3 node for validity of ID mappings for MSIs
> related to control interrupts.
> It makes one small addition to SMMUv3 nodes to
> describe MSI support independently of wired GSIV support
>
> Therefore, update the IORT generator to:
> - increment IORT table revision to 6
> - increment SMMUV3 node revision to 5
> - for SMMUV3 node revision >=5 check the DeviceID mapping index
> valid flag to populate DeviceIdMappingIndex field
>
> Signed-off-by: Swatisri Kantamsetti <swatisrik@nvidia.com>
> ---
> .../Acpi/Arm/AcpiIortLibArm/IortGenerator.c | 35 +++++++++++++++----
> 1 file changed, 28 insertions(+), 7 deletions(-)
>
> diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
> index f28973c1a8..a6e4b49cb1 100644
> --- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
> +++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
> @@ -5,7 +5,7 @@
> SPDX-License-Identifier: BSD-2-Clause-Patent
>
> @par Reference(s):
> - - IO Remapping Table, Platform Design Document, Revision E.d, Feb 2022
> + - IO Remapping Table, Platform Design Document, Revision E.e, Sept 2022
> (https://developer.arm.com/documentation/den0049/)
>
> **/
> @@ -1554,9 +1554,14 @@ AddSmmuV3Nodes (
> {
> SmmuV3Node->Node.Revision = 2;
> SmmuV3Node->Node.Identifier = EFI_ACPI_RESERVED_DWORD;
> - } else {
> + } else if (AcpiTableInfo->AcpiTableRevision <
> + EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06)
> + {
> SmmuV3Node->Node.Revision = 4;
> SmmuV3Node->Node.Identifier = NodeList->Identifier;
> + } else {
> + SmmuV3Node->Node.Revision = 5;
> + SmmuV3Node->Node.Identifier = NodeList->Identifier;
> }
>
> // SMMUv3 specific data
> @@ -1577,11 +1582,27 @@ AddSmmuV3Nodes (
> SmmuV3Node->ProximityDomain = 0;
> }
>
> - if ((SmmuV3Node->Event != 0) && (SmmuV3Node->Pri != 0) &&
> - (SmmuV3Node->Gerr != 0) && (SmmuV3Node->Sync != 0))
> + /* For older SMMUV3 nodes rev. < 5.
> + If all the SMMU control interrupts are GSIV based,
> + the DeviceID mapping index field is ignored.
> + DeviceID mapping valid flag was introduced in IORT rev E.e
> + for SMMUV3 nodes rev. > 5.
> + If the DeviceID mapping index valid flag is set to 0,
> + DeviceID mapping index field must be ignored.
> + Where the SMMU uses message signaled interrupts for
> + its control interrupts, DeviceId Mapping Index contains an
> + index into the array of ID mapping.
> + */
> + if (((SmmuV3Node->Node.Revision < 5) &&
> + (SmmuV3Node->Event != 0) &&
> + (SmmuV3Node->Pri != 0) &&
> + (SmmuV3Node->Gerr != 0) &&
> + (SmmuV3Node->Sync != 0)
> + ) ||
> + ((SmmuV3Node->Node.Revision >= 5) &&
> + ((SmmuV3Node->Flags & EFI_ACPI_IORT_SMMUv3_FLAG_DEVICEID_VALID) == 0))
> + )
> {
> - // If all the SMMU control interrupts are GSIV based,
> - // the DeviceID mapping index field is ignored.
> SmmuV3Node->DeviceIdMappingIndex = 0;
> } else {
> SmmuV3Node->DeviceIdMappingIndex = NodeList->DeviceIdMappingIndex;
> @@ -2819,7 +2840,7 @@ ACPI_IORT_GENERATOR IortGenerator = {
> // ACPI Table Signature
> EFI_ACPI_6_4_IO_REMAPPING_TABLE_SIGNATURE,
> // ACPI Table Revision supported by this Generator
> - EFI_ACPI_IO_REMAPPING_TABLE_REVISION_05,
> + EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06,
> // Minimum supported ACPI Table Revision
> EFI_ACPI_IO_REMAPPING_TABLE_REVISION_00,
> // Creator ID
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* Re: [edk2-devel] [PATCH] DynamicTablesPkg: IORT generator updates for Rev E.e spec
2023-09-22 21:40 [edk2-devel] [PATCH] DynamicTablesPkg: IORT generator updates for Rev E.e spec Swatisri Kantamsetti via groups.io
2023-09-25 9:19 ` Sami Mujawar
@ 2023-09-25 9:40 ` Leif Lindholm
2023-09-25 9:47 ` Sami Mujawar
1 sibling, 1 reply; 4+ messages in thread
From: Leif Lindholm @ 2023-09-25 9:40 UTC (permalink / raw)
To: devel, swatisrik; +Cc: Sami.Mujawar, pierre.gondois
On Fri, Sep 22, 2023 at 15:40:38 -0600, Swatisri Kantamsetti via groups.io wrote:
> The IO Remapping Table, Platform Design Document, Revision E.e,
> Sept 2022 (https://developer.arm.com/documentation/den0049/ee)
> added flags in SMMUv3 node for validity of ID mappings for MSIs
> related to control interrupts.
> It makes one small addition to SMMUv3 nodes to
> describe MSI support independently of wired GSIV support
>
> Therefore, update the IORT generator to:
> - increment IORT table revision to 6
> - increment SMMUV3 node revision to 5
> - for SMMUV3 node revision >=5 check the DeviceID mapping index
> valid flag to populate DeviceIdMappingIndex field
>
> Signed-off-by: Swatisri Kantamsetti <swatisrik@nvidia.com>
> ---
> .../Acpi/Arm/AcpiIortLibArm/IortGenerator.c | 35 +++++++++++++++----
> 1 file changed, 28 insertions(+), 7 deletions(-)
>
> diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
> index f28973c1a8..a6e4b49cb1 100644
> --- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
> +++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
> @@ -5,7 +5,7 @@
> SPDX-License-Identifier: BSD-2-Clause-Patent
>
> @par Reference(s):
> - - IO Remapping Table, Platform Design Document, Revision E.d, Feb 2022
> + - IO Remapping Table, Platform Design Document, Revision E.e, Sept 2022
> (https://developer.arm.com/documentation/den0049/)
>
> **/
> @@ -1554,9 +1554,14 @@ AddSmmuV3Nodes (
> {
> SmmuV3Node->Node.Revision = 2;
> SmmuV3Node->Node.Identifier = EFI_ACPI_RESERVED_DWORD;
> - } else {
> + } else if (AcpiTableInfo->AcpiTableRevision <
> + EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06)
> + {
> SmmuV3Node->Node.Revision = 4;
> SmmuV3Node->Node.Identifier = NodeList->Identifier;
> + } else {
> + SmmuV3Node->Node.Revision = 5;
> + SmmuV3Node->Node.Identifier = NodeList->Identifier;
This is borderline, but I think it would be worth breaking out into a
helper function. It feels like this may have further cases added in
future.
> }
>
> // SMMUv3 specific data
> @@ -1577,11 +1582,27 @@ AddSmmuV3Nodes (
> SmmuV3Node->ProximityDomain = 0;
> }
>
> - if ((SmmuV3Node->Event != 0) && (SmmuV3Node->Pri != 0) &&
> - (SmmuV3Node->Gerr != 0) && (SmmuV3Node->Sync != 0))
> + /* For older SMMUV3 nodes rev. < 5.
> + If all the SMMU control interrupts are GSIV based,
> + the DeviceID mapping index field is ignored.
> + DeviceID mapping valid flag was introduced in IORT rev E.e
> + for SMMUV3 nodes rev. > 5.
> + If the DeviceID mapping index valid flag is set to 0,
> + DeviceID mapping index field must be ignored.
> + Where the SMMU uses message signaled interrupts for
> + its control interrupts, DeviceId Mapping Index contains an
> + index into the array of ID mapping.
> + */
> + if (((SmmuV3Node->Node.Revision < 5) &&
> + (SmmuV3Node->Event != 0) &&
> + (SmmuV3Node->Pri != 0) &&
> + (SmmuV3Node->Gerr != 0) &&
> + (SmmuV3Node->Sync != 0)
> + ) ||
> + ((SmmuV3Node->Node.Revision >= 5) &&
> + ((SmmuV3Node->Flags & EFI_ACPI_IORT_SMMUv3_FLAG_DEVICEID_VALID) == 0))
> + )
This is not borderline. I'm sure all of this is correct, but it is no
longer human readable. This type of information overload is better
kept out of a top-level function.
This also means we can give it an informative name.
Best Regards,
Leif
p.s.
Apologies Sami, but since I spotted this before it had been merged by
CI, I dropped the "push" tag since I wanted to make a comment.
You are the maintainer, and the above are my opinions only. If you
disagree, feel free to add it back and push as is.
(And feel free to do the same to push requests initiated by me in
future.)
> {
> - // If all the SMMU control interrupts are GSIV based,
> - // the DeviceID mapping index field is ignored.
> SmmuV3Node->DeviceIdMappingIndex = 0;
> } else {
> SmmuV3Node->DeviceIdMappingIndex = NodeList->DeviceIdMappingIndex;
> @@ -2819,7 +2840,7 @@ ACPI_IORT_GENERATOR IortGenerator = {
> // ACPI Table Signature
> EFI_ACPI_6_4_IO_REMAPPING_TABLE_SIGNATURE,
> // ACPI Table Revision supported by this Generator
> - EFI_ACPI_IO_REMAPPING_TABLE_REVISION_05,
> + EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06,
> // Minimum supported ACPI Table Revision
> EFI_ACPI_IO_REMAPPING_TABLE_REVISION_00,
> // Creator ID
> --
> 2.17.1
>
>
>
>
>
>
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* Re: [edk2-devel] [PATCH] DynamicTablesPkg: IORT generator updates for Rev E.e spec
2023-09-25 9:40 ` Leif Lindholm
@ 2023-09-25 9:47 ` Sami Mujawar
0 siblings, 0 replies; 4+ messages in thread
From: Sami Mujawar @ 2023-09-25 9:47 UTC (permalink / raw)
To: Leif Lindholm, devel, swatisrik; +Cc: pierre.gondois, nd@arm.com
Hi Leif,
Please find my response inline marked [SAMI].
Regards,
Sami Mujawar
On 25/09/2023 10:40 am, Leif Lindholm wrote:
> On Fri, Sep 22, 2023 at 15:40:38 -0600, Swatisri Kantamsetti via groups.io wrote:
>> The IO Remapping Table, Platform Design Document, Revision E.e,
>> Sept 2022 (https://developer.arm.com/documentation/den0049/ee)
>> added flags in SMMUv3 node for validity of ID mappings for MSIs
>> related to control interrupts.
>> It makes one small addition to SMMUv3 nodes to
>> describe MSI support independently of wired GSIV support
>>
>> Therefore, update the IORT generator to:
>> - increment IORT table revision to 6
>> - increment SMMUV3 node revision to 5
>> - for SMMUV3 node revision >=5 check the DeviceID mapping index
>> valid flag to populate DeviceIdMappingIndex field
>>
>> Signed-off-by: Swatisri Kantamsetti <swatisrik@nvidia.com>
>> ---
>> .../Acpi/Arm/AcpiIortLibArm/IortGenerator.c | 35 +++++++++++++++----
>> 1 file changed, 28 insertions(+), 7 deletions(-)
>>
>> diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
>> index f28973c1a8..a6e4b49cb1 100644
>> --- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
>> +++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c
>> @@ -5,7 +5,7 @@
>> SPDX-License-Identifier: BSD-2-Clause-Patent
>>
>> @par Reference(s):
>> - - IO Remapping Table, Platform Design Document, Revision E.d, Feb 2022
>> + - IO Remapping Table, Platform Design Document, Revision E.e, Sept 2022
>> (https://developer.arm.com/documentation/den0049/)
>>
>> **/
>> @@ -1554,9 +1554,14 @@ AddSmmuV3Nodes (
>> {
>> SmmuV3Node->Node.Revision = 2;
>> SmmuV3Node->Node.Identifier = EFI_ACPI_RESERVED_DWORD;
>> - } else {
>> + } else if (AcpiTableInfo->AcpiTableRevision <
>> + EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06)
>> + {
>> SmmuV3Node->Node.Revision = 4;
>> SmmuV3Node->Node.Identifier = NodeList->Identifier;
>> + } else {
>> + SmmuV3Node->Node.Revision = 5;
>> + SmmuV3Node->Node.Identifier = NodeList->Identifier;
> This is borderline, but I think it would be worth breaking out into a
> helper function. It feels like this may have further cases added in
> future.
>
>> }
>>
>> // SMMUv3 specific data
>> @@ -1577,11 +1582,27 @@ AddSmmuV3Nodes (
>> SmmuV3Node->ProximityDomain = 0;
>> }
>>
>> - if ((SmmuV3Node->Event != 0) && (SmmuV3Node->Pri != 0) &&
>> - (SmmuV3Node->Gerr != 0) && (SmmuV3Node->Sync != 0))
>> + /* For older SMMUV3 nodes rev. < 5.
>> + If all the SMMU control interrupts are GSIV based,
>> + the DeviceID mapping index field is ignored.
>> + DeviceID mapping valid flag was introduced in IORT rev E.e
>> + for SMMUV3 nodes rev. > 5.
>> + If the DeviceID mapping index valid flag is set to 0,
>> + DeviceID mapping index field must be ignored.
>> + Where the SMMU uses message signaled interrupts for
>> + its control interrupts, DeviceId Mapping Index contains an
>> + index into the array of ID mapping.
>> + */
>> + if (((SmmuV3Node->Node.Revision < 5) &&
>> + (SmmuV3Node->Event != 0) &&
>> + (SmmuV3Node->Pri != 0) &&
>> + (SmmuV3Node->Gerr != 0) &&
>> + (SmmuV3Node->Sync != 0)
>> + ) ||
>> + ((SmmuV3Node->Node.Revision >= 5) &&
>> + ((SmmuV3Node->Flags & EFI_ACPI_IORT_SMMUv3_FLAG_DEVICEID_VALID) == 0))
>> + )
> This is not borderline. I'm sure all of this is correct, but it is no
> longer human readable. This type of information overload is better
> kept out of a top-level function.
> This also means we can give it an informative name.
>
> Best Regards,
>
> Leif
>
> p.s.
> Apologies Sami, but since I spotted this before it had been merged by
> CI, I dropped the "push" tag since I wanted to make a comment.
> You are the maintainer, and the above are my opinions only. If you
> disagree, feel free to add it back and push as is.
> (And feel free to do the same to push requests initiated by me in
> future.)
[SAMI] I agree, this is becoming complex to read. I think it would be
good to have helper functions to make the code clearer.
I have closed the pull request and look forward to a new patch from
Swatisri.
[/SAMI]
>> {
>> - // If all the SMMU control interrupts are GSIV based,
>> - // the DeviceID mapping index field is ignored.
>> SmmuV3Node->DeviceIdMappingIndex = 0;
>> } else {
>> SmmuV3Node->DeviceIdMappingIndex = NodeList->DeviceIdMappingIndex;
>> @@ -2819,7 +2840,7 @@ ACPI_IORT_GENERATOR IortGenerator = {
>> // ACPI Table Signature
>> EFI_ACPI_6_4_IO_REMAPPING_TABLE_SIGNATURE,
>> // ACPI Table Revision supported by this Generator
>> - EFI_ACPI_IO_REMAPPING_TABLE_REVISION_05,
>> + EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06,
>> // Minimum supported ACPI Table Revision
>> EFI_ACPI_IO_REMAPPING_TABLE_REVISION_00,
>> // Creator ID
>> --
>> 2.17.1
>>
>>
>>
>>
>>
>>
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2023-09-22 21:40 [edk2-devel] [PATCH] DynamicTablesPkg: IORT generator updates for Rev E.e spec Swatisri Kantamsetti via groups.io
2023-09-25 9:19 ` Sami Mujawar
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