From: "PierreGondois" <pierre.gondois@arm.com>
To: devel@edk2.groups.io
Cc: Sami Mujawar <sami.mujawar@arm.com>,
Alexei Fedorov <Alexei.Fedorov@arm.com>
Subject: [PATCH 09/14] DynamicTablesPkg: Fix Ssdt PCI generation comments
Date: Mon, 10 Oct 2022 11:20:53 +0200 [thread overview]
Message-ID: <20221010092058.118714-10-Pierre.Gondois@arm.com> (raw)
In-Reply-To: <20221010092058.118714-1-Pierre.Gondois@arm.com>
From: Pierre Gondois <pierre.gondois@arm.com>
The second model of the _PRT object is used. Indeed:
- the interrupts described are not re-configurable
- OSes are aware of the polarity of PCI legacy interrupts,
so there is no need to accurately describe the polarity.
Also, fix a comment for the CM_ARM_PCI_INTERRUPT_MAP_INFO obj.
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
---
DynamicTablesPkg/Include/ArmNameSpaceObjects.h | 2 +-
.../Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c | 8 ++------
2 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h b/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
index cd39e609d6c4..d711f3ec5938 100644
--- a/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
+++ b/DynamicTablesPkg/Include/ArmNameSpaceObjects.h
@@ -1014,7 +1014,7 @@ typedef struct CmArmPciInterruptMapInfo {
/// Value on 8 bits (max 255).
UINT8 PciBus;
- /// Pci Bus.
+ /// Pci Device.
/// Value on 5 bits (max 31).
UINT8 PciDevice;
diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
index 85098752c614..c54ae6f551f6 100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
@@ -288,12 +288,6 @@ GeneratePciDeviceInfo (
Cf. ACPI 6.4 specification, s6.2.13 "_PRT (PCI Routing Table)"
- The first model (defining a _CRS object) is used. This is necessary because
- PCI legacy interrupts are active low and GICv2 SPI interrupts are active
- high.
- Even though PCI interrupts cannot be re-routed, only the first model allows
- to specify the activation state (low/high).
-
@param [in] Generator The SSDT Pci generator.
@param [in] CfgMgrProtocol Pointer to the Configuration Manager
Protocol interface.
@@ -397,6 +391,8 @@ GeneratePrt (
High word-Device #, Low word-Function #. (for example, device 3,
function 2 is 0x00030002). To refer to all the functions on a device #,
use a function number of FFFF).
+
+ Use the second model for _PRT object and describe a hardwired interrupt.
*/
Status = AmlAddPrtEntry (
(IrqMapInfo->PciDevice << 16) | 0xFFFF,
--
2.25.1
next prev parent reply other threads:[~2022-10-10 9:21 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-10 9:20 [PATCH 00/14] Add PCCT generator and various fixes PierreGondois
2022-10-10 9:20 ` [PATCH 01/14] DynamicTablesPkg: Use correct print formatter PierreGondois
2022-10-26 12:36 ` Sami Mujawar
2022-10-10 9:20 ` [PATCH 02/14] DynamicTablesPkg: Add PrintString to CmObjParser PierreGondois
2022-10-26 12:36 ` Sami Mujawar
2022-10-10 9:20 ` [PATCH 03/14] DynamicTablesPkg: Update CmObjParser for IORT Rev E.d PierreGondois
2022-10-26 12:34 ` Sami Mujawar
2022-10-28 10:05 ` PierreGondois
2022-10-10 9:20 ` [PATCH 04/14] DynamicTablesPkg: Update CmObjParser for MinorRevision PierreGondois
2022-10-26 12:36 ` Sami Mujawar
2022-10-10 9:20 ` [PATCH 05/14] DynamicTablesPkg: Fix GTBlock and GTBlockTimerFrame CmObjParsers PierreGondois
2022-10-26 12:37 ` Sami Mujawar
2022-10-10 9:20 ` [PATCH 06/14] DynamicTablesPkg: Fix wrong/missing fields in CmObjParser PierreGondois
2022-10-26 12:34 ` Sami Mujawar
2022-10-28 10:05 ` PierreGondois
2022-10-10 9:20 ` [PATCH 07/14] DynamicTablesPkg: Remove deprecated APIs PierreGondois
2022-10-26 12:37 ` Sami Mujawar
2022-10-10 9:20 ` [PATCH 08/14] DynamicTablesPkg: FdtHwInfoParserLib: Remove wrong comment PierreGondois
2022-10-26 12:37 ` Sami Mujawar
2022-10-10 9:20 ` PierreGondois [this message]
2022-10-26 12:37 ` [PATCH 09/14] DynamicTablesPkg: Fix Ssdt PCI generation comments Sami Mujawar
2022-10-10 9:20 ` [PATCH 10/14] DynamicTablesPkg: Add PCCT related objects PierreGondois
2022-10-26 12:34 ` Sami Mujawar
2022-10-28 10:04 ` PierreGondois
2022-10-10 9:20 ` [PATCH 11/14] DynamicTablesPkg: Add PCCT Generator PierreGondois
2022-10-26 12:35 ` Sami Mujawar
2022-10-28 10:02 ` PierreGondois
2022-10-10 9:20 ` [PATCH 12/14] DynamicTablesPkg/AmlLib: Allow larger AccessSize for Pcc address space PierreGondois
2022-10-26 12:34 ` Sami Mujawar
2022-10-28 10:04 ` PierreGondois
2022-10-10 9:20 ` [PATCH 13/14] DynamicTablesPkg: Readme.md: Update available tables for generation PierreGondois
2022-10-26 12:07 ` Sami Mujawar
2022-10-10 9:20 ` [PATCH 14/14] ShellPkg/AcpiView: Update PCCT fields for ACPI 6.5 PierreGondois
2022-10-26 12:06 ` Sami Mujawar
[not found] ` <171CAABD595C9750.32766@groups.io>
2022-10-10 9:48 ` [edk2-devel] " PierreGondois
2022-10-11 1:41 ` Ni, Ray
2022-10-31 13:34 ` [edk2-devel] [PATCH 00/14] Add PCCT generator and various fixes Sami Mujawar
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