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irqchip/gic-v3: Rename GICv3 ITS MSI parent

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The GICv5 ITS will reuse some GICv3 ITS MSI parent functions therefore
it makes sense to keep the code functionality in a compilation unit
shared by the two drivers.

Rename the GICv3 ITS MSI parent file and update the related
Kconfig/Makefile entries to pave the way for code sharing.

Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250703-gicv5-host-v7-26-12e71f1b3528@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Lorenzo Pieralisi
2025-07-03 12:25:16 +02:00
committed by Marc Zyngier
parent cd0ec59aff
commit b4ead12d95
6 changed files with 19 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/irqchip/Kconfig
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@@ -41,10 +41,14 @@ config ARM_GIC_V3
select HAVE_ARM_SMCCC_DISCOVERY
select IRQ_MSI_IOMMU
config ARM_GIC_ITS_PARENT
bool
config ARM_GIC_V3_ITS
bool
select GENERIC_MSI_IRQ
select IRQ_MSI_LIB
select ARM_GIC_ITS_PARENT
default ARM_GIC_V3
select IRQ_MSI_IOMMU

3
drivers/irqchip/Makefile
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@@ -33,7 +33,8 @@ obj-$(CONFIG_ARCH_REALVIEW) += irq-gic-realview.o
obj-$(CONFIG_IRQ_MSI_LIB) += irq-msi-lib.o
obj-$(CONFIG_ARM_GIC_V2M) += irq-gic-v2m.o
obj-$(CONFIG_ARM_GIC_V3) += irq-gic-v3.o irq-gic-v3-mbi.o irq-gic-common.o
obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v4.o irq-gic-v3-its-msi-parent.o
obj-$(CONFIG_ARM_GIC_ITS_PARENT) += irq-gic-its-msi-parent.o
obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v4.o
obj-$(CONFIG_ARM_GIC_V3_ITS_FSL_MC) += irq-gic-v3-its-fsl-mc-msi.o
obj-$(CONFIG_PARTITION_PERCPU) += irq-partition-percpu.o
obj-$(CONFIG_ARM_GIC_V5) += irq-gic-v5.o irq-gic-v5-irs.o

2
drivers/irqchip/irq-gic-common.h
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@@ -29,8 +29,6 @@ void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
void gic_enable_of_quirks(const struct device_node *np,
const struct gic_quirk *quirks, void *data);
extern const struct msi_parent_ops gic_v3_its_msi_parent_ops;
#define RDIST_FLAGS_PROPBASE_NEEDS_FLUSHING (1 << 0)
#define RDIST_FLAGS_RD_TABLES_PREALLOCATED (1 << 1)
#define RDIST_FLAGS_FORCE_NON_SHAREABLE (1 << 2)

2
drivers/irqchip/irq-gic-v3-its-msi-parent.c → drivers/irqchip/irq-gic-its-msi-parent.c
View File

@@ -7,7 +7,7 @@
#include <linux/acpi_iort.h>
#include <linux/pci.h>
#include "irq-gic-common.h"
#include "irq-gic-its-msi-parent.h"
#include <linux/irqchip/irq-msi-lib.h>
#define ITS_MSI_FLAGS_REQUIRED (MSI_FLAG_USE_DEF_DOM_OPS | \

11
drivers/irqchip/irq-gic-its-msi-parent.h Normal file
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@@ -0,0 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2024 ARM Limited, All Rights Reserved.
*/
#ifndef _IRQ_GIC_ITS_MSI_PARENT_H
#define _IRQ_GIC_ITS_MSI_PARENT_H
extern const struct msi_parent_ops gic_v3_its_msi_parent_ops;
#endif /* _IRQ_GIC_ITS_MSI_PARENT_H */

1
drivers/irqchip/irq-gic-v3-its.c
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@@ -41,6 +41,7 @@
#include <asm/exception.h>
#include "irq-gic-common.h"
#include "irq-gic-its-msi-parent.h"
#include <linux/irqchip/irq-msi-lib.h>
#define ITS_FLAGS_CMDQ_NEEDS_FLUSHING (1ULL << 0)