On 8/17/22 02:17, Kun Qin wrote:
Hi Pierre,
You are correct that if CM_ARM_PCI_ADDRESS_MAP_INFO.PCI_SS_CONFIG
is no longer being used, this patch is not needed. Thanks for catching this.
On the other hand, just for my learning purpose, could you please let me know
what the use case for "PCI_SS_CONFIG" is? It does not seem to be used at all.
I haven't seen any usecase neither so far, but it is to be used to reference a
PCI bus/device/function/register location to identify/configure a device
from what I understood.
Thanks again for testing these patches!
Regards,
Kun
On 8/16/2022 8:33 AM, Pierre Gondois wrote:
Hello Kun,
Is this patch still required ?
Cf: https://edk2.groups.io/g/devel/message/92204
The CM_ARM_PCI_CONFIG_SPACE_INFO struct should be enough to describe
the PCI ECAM, so CM_ARM_PCI_ADDRESS_MAP_INFO.SpaceCode being set to
PCI_SS_CONFIG should be an invalid case.
If not I don't think a v5 should be necessary.
Also I ran the patchset on KvmTool and everything was working.
Regards,
Pierre
On 8/11/22 00:28, Kun Qin wrote:
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3998
This change added a switch case handling for PCI_SS_CONFIG during SSDT
generation. This will allow PCI config case return EFI_SUCCESS instead of
EFI_INVALID_PARAMETER.
Cc: Sami Mujawar <sami.muja...@arm.com>
Cc: Alexei Fedorov <alexei.fedo...@arm.com>
Co-authored-by: Joe Lopez <joelo...@microsoft.com>
Signed-off-by: Kun Qin <kuqi...@gmail.com>
Reviewed-by: Pierre Gondois <pierre.gond...@arm.com>
Reviewed-by: Sami Mujawar <sami.muja...@arm.com>
---
Notes:
v2:
- Added Reviewed-by tag [Pierre]
v3:
- No change
v4:
- Added Reviewed-by tag [Sami]
DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c | 5
+++++
1 file changed, 5 insertions(+)
diff --git
a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
index dd75fc27e60e..c6fbd09c43f8 100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
@@ -606,6 +606,11 @@ GeneratePciCrs (
);
break;
+ case PCI_SS_CONFIG:
+ // Do nothing
+ Status = EFI_SUCCESS;
+ break;
+
default:
Status = EFI_INVALID_PARAMETER;
} // switch
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