linux-kernel - [PATCH not for merging 1/7] ACPICA: Add GICv5 MADT structures

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Message-Id: <20251028-gicv5-host-acpi-v1-1-01a862feb5ca@kernel.org>
Date: Tue, 28 Oct 2025 11:18:59 +0100
From: Lorenzo Pieralisi <lpieralisi@...nel.org>
To: "Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, 
 Robert Moore <robert.moore@...el.com>, Thomas Gleixner <tglx@...utronix.de>, 
 Hanjun Guo <guohanjun@...wei.com>, Sudeep Holla <sudeep.holla@....com>, 
 Marc Zyngier <maz@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>
Cc: linux-acpi@...r.kernel.org, acpica-devel@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-pci@...r.kernel.org, Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Jose Marinho <jose.marinho@....com>
Subject: [PATCH not for merging 1/7] ACPICA: Add GICv5 MADT structures

From: Jose Marinho <jose.marinho@....com>

ACPICA commit 3996a7eec0ded24b22fa2098fb63f4805a3e809c

The GICv5 adds the following MADT structures:
- IRS
- ITS Config Frame
- ITS Translate Frame

The ACPI spec ECR is at https://github.com/tianocore/edk2/issues/11148

Link: https://github.com/acpica/acpica/commit/3996a7ee
Signed-off-by: Jose Marinho <jose.marinho@....com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@...nel.org>
---
 include/acpi/actbl2.h | 49 +++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 45 insertions(+), 4 deletions(-)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index f726bce3eb84..fdabc6c64a9c 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -1167,7 +1167,10 @@ enum acpi_madt_type {
 	ACPI_MADT_TYPE_IMSIC = 25,
 	ACPI_MADT_TYPE_APLIC = 26,
 	ACPI_MADT_TYPE_PLIC = 27,
-	ACPI_MADT_TYPE_RESERVED = 28,	/* 28 to 0x7F are reserved */
+	ACPI_MADT_TYPE_GICV5_IRS = 28,
+	ACPI_MADT_TYPE_GICV5_ITS = 29,
+	ACPI_MADT_TYPE_GICV5_ITS_TRANSLATE = 30,
+	ACPI_MADT_TYPE_RESERVED = 31,	/* 31 to 0x7F are reserved */
 	ACPI_MADT_TYPE_OEM_RESERVED = 0x80	/* 0x80 to 0xFF are reserved for OEM use */
 };
 
@@ -1289,7 +1292,7 @@ struct acpi_madt_local_x2apic_nmi {
 	u8 reserved[3];		/* reserved - must be zero */
 };
 
-/* 11: Generic interrupt - GICC (ACPI 5.0 + ACPI 6.0 + ACPI 6.3 + ACPI 6.5 changes) */
+/* 11: Generic interrupt - GICC (ACPI 5.0 + ACPI 6.0 + ACPI 6.3 + ACPI 6.5 + ACPI 6.7 changes) */
 
 struct acpi_madt_generic_interrupt {
 	struct acpi_subtable_header header;
@@ -1310,6 +1313,8 @@ struct acpi_madt_generic_interrupt {
 	u8 reserved2[1];
 	u16 spe_interrupt;	/* ACPI 6.3 */
 	u16 trbe_interrupt;	/* ACPI 6.5 */
+	u16 iaffid;		/* ACPI 6.7 */
+	u32 irs_id;
 };
 
 /* Masks for Flags field above */
@@ -1332,7 +1337,7 @@ struct acpi_madt_generic_distributor {
 	u8 reserved2[3];	/* reserved - must be zero */
 };
 
-/* Values for Version field above */
+/* Values for Version field above and Version field in acpi_madt_gicv5_irs */
 
 enum acpi_madt_gic_version {
 	ACPI_MADT_GIC_VERSION_NONE = 0,
@@ -1340,7 +1345,8 @@ enum acpi_madt_gic_version {
 	ACPI_MADT_GIC_VERSION_V2 = 2,
 	ACPI_MADT_GIC_VERSION_V3 = 3,
 	ACPI_MADT_GIC_VERSION_V4 = 4,
-	ACPI_MADT_GIC_VERSION_RESERVED = 5	/* 5 and greater are reserved */
+	ACPI_MADT_GIC_VERSION_V5 = 5,
+	ACPI_MADT_GIC_VERSION_RESERVED = 6	/* 6 and greater are reserved */
 };
 
 /* 13: Generic MSI Frame (ACPI 5.1) */
@@ -1611,6 +1617,41 @@ struct acpi_madt_plic {
 	u32 gsi_base;
 };
 
+/* 28: Arm GICv5 IRS (ACPI 6.7) */
+struct acpi_madt_gicv5_irs {
+	struct acpi_subtable_header header;
+	u8 version;
+	u8 reserved;
+	u32 irs_id;
+	u32 flags;
+	u32 reserved2;
+	u64 config_base_address;
+	u64 setlpi_base_address;
+};
+
+#define ACPI_MADT_IRS_NON_COHERENT      (1)
+
+/* 29: Arm GICv5 ITS Config Frame (ACPI 6.7) */
+struct acpi_madt_gicv5_translator {
+	struct acpi_subtable_header header;
+	u8 flags;
+	u8 reserved;		/* reserved - must be zero */
+	u32 translator_id;
+	u64 base_address;
+};
+
+#define ACPI_MADT_GICV5_ITS_NON_COHERENT      (1)
+
+/* 30: Arm GICv5 ITS Translate Frame (ACPI 6.7) */
+struct acpi_madt_gicv5_translate_frame {
+	struct acpi_subtable_header header;
+	u16 reserved;		/* reserved - must be zero */
+	u32 linked_translator_id;
+	u32 translate_frame_id;
+	u32 reserved2;
+	u64 base_address;
+};
+
 /* 80: OEM data */
 
 struct acpi_madt_oem_data {

-- 
2.50.1