linux-kernel - [PATCH v4 2/3] ACPICA: MADT: Add new MADT GICC/GICR/ITS non-coherent flags handling

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Message-Id: <20231227110038.55453-3-lpieralisi@kernel.org>
Date: Wed, 27 Dec 2023 12:00:37 +0100
From: Lorenzo Pieralisi <lpieralisi@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Robert Moore <robert.moore@...el.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-acpi@...r.kernel.org,
	acpica-devel@...ts.linux.dev,
	Mark Rutland <mark.rutland@....com>,
	Robin Murphy <robin.murphy@....com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Fang Xiang <fangxiang3@...omi.com>,
	Marc Zyngier <maz@...nel.org>
Subject: [PATCH v4 2/3] ACPICA: MADT: Add new MADT GICC/GICR/ITS non-coherent flags handling

ACPICA commit c5d2010744b1bf7efba0bd04a8a9c200ef8fb610

Add new flags and related fields to the MADT GICC/GICR/ITS
structures according to the code first ECR:

https://bugzilla.tianocore.org/show_bug.cgi?id=4557

Update the MADT template to the latest MADT revision.

Link: https://github.com/acpica/acpica/commit/c5d20107
Signed-off-by: Lorenzo Pieralisi <lpieralisi@...nel.org>
Cc: Robert Moore <robert.moore@...el.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
---
 include/acpi/actbl2.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 2b4dd2c3348f..9775384d61c6 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -1047,6 +1047,7 @@ struct acpi_madt_generic_interrupt {
 #define ACPI_MADT_PERFORMANCE_IRQ_MODE  (1<<1)	/* 01: Performance Interrupt Mode */
 #define ACPI_MADT_VGIC_IRQ_MODE         (1<<2)	/* 02: VGIC Maintenance Interrupt mode */
 #define ACPI_MADT_GICC_ONLINE_CAPABLE   (1<<3)	/* 03: Processor is online capable  */
+#define ACPI_MADT_GICC_NON_COHERENT     (1<<4)	/* 04: GIC redistributor is not coherent */
 
 /* 12: Generic Distributor (ACPI 5.0 + ACPI 6.0 changes) */
 
@@ -1091,21 +1092,27 @@ struct acpi_madt_generic_msi_frame {
 
 struct acpi_madt_generic_redistributor {
 	struct acpi_subtable_header header;
-	u16 reserved;		/* reserved - must be zero */
+	u8 flags;
+	u8 reserved;		/* reserved - must be zero */
 	u64 base_address;
 	u32 length;
 };
 
+#define ACPI_MADT_GICR_NON_COHERENT     (1)
+
 /* 15: Generic Translator (ACPI 6.0) */
 
 struct acpi_madt_generic_translator {
 	struct acpi_subtable_header header;
-	u16 reserved;		/* reserved - must be zero */
+	u8 flags;
+	u8 reserved;		/* reserved - must be zero */
 	u32 translation_id;
 	u64 base_address;
 	u32 reserved2;
 };
 
+#define ACPI_MADT_ITS_NON_COHERENT      (1)
+
 /* 16: Multiprocessor wakeup (ACPI 6.4) */
 
 struct acpi_madt_multiproc_wakeup {
-- 
2.34.1