linux-kernel - [PATCH v3 11/13] irqchip/gic: Add .irq

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Date:   Tue, 29 Jun 2021 13:50:08 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     Marc Zyngier <maz@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Vincenzo Frascino <vincenzo.frascino@....com>
Subject: [PATCH v3 11/13] irqchip/gic: Add .irq_ack() to GIC-based irqchips

Subsequent patches will make the GIC IRQs use a flow handler that issues an
irq_ack(), thus irqchips of child domains need to have an .irq_ack() of
their own.

Most cases are covered by the default MSI callbacks, but nexus domains and
other non-MSI domains still need tending do.

Signed-off-by: Valentin Schneider <valentin.schneider@....com>
---
 drivers/irqchip/irq-gic-v2m.c    | 1 +
 drivers/irqchip/irq-gic-v3-its.c | 3 +++
 drivers/irqchip/irq-gic-v3-mbi.c | 1 +
 3 files changed, 5 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
index 27a97c76ba0d..b8cf3ff87b15 100644
--- a/drivers/irqchip/irq-gic-v2m.c
+++ b/drivers/irqchip/irq-gic-v2m.c
@@ -126,6 +126,7 @@ static struct irq_chip gicv2m_irq_chip = {
 	.name			= "GICv2m",
 	.irq_mask		= irq_chip_mask_parent,
 	.irq_unmask		= irq_chip_unmask_parent,
+	.irq_ack		= irq_chip_ack_parent,
 	.irq_eoi		= irq_chip_eoi_parent,
 	.irq_set_affinity	= irq_chip_set_affinity_parent,
 	.irq_compose_msi_msg	= gicv2m_compose_msi_msg,
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index ba39668c3e08..8a372ac0079e 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1976,6 +1976,7 @@ static struct irq_chip its_irq_chip = {
 	.name			= "ITS",
 	.irq_mask		= its_mask_irq,
 	.irq_unmask		= its_unmask_irq,
+	.irq_ack		= irq_chip_ack_parent,
 	.irq_eoi		= irq_chip_eoi_parent,
 	.irq_set_affinity	= its_set_affinity,
 	.irq_compose_msi_msg	= its_irq_compose_msi_msg,
@@ -3997,6 +3998,7 @@ static struct irq_chip its_vpe_irq_chip = {
 	.name			= "GICv4-vpe",
 	.irq_mask		= its_vpe_mask_irq,
 	.irq_unmask		= its_vpe_unmask_irq,
+	.irq_ack		= irq_chip_ack_parent,
 	.irq_eoi		= irq_chip_eoi_parent,
 	.irq_set_affinity	= its_vpe_set_affinity,
 	.irq_retrigger		= its_vpe_retrigger,
@@ -4152,6 +4154,7 @@ static struct irq_chip its_vpe_4_1_irq_chip = {
 	.name			= "GICv4.1-vpe",
 	.irq_mask		= its_vpe_4_1_mask_irq,
 	.irq_unmask		= its_vpe_4_1_unmask_irq,
+	.irq_ack		= irq_chip_ack_parent,
 	.irq_eoi		= irq_chip_eoi_parent,
 	.irq_set_affinity	= its_vpe_set_affinity,
 	.irq_set_vcpu_affinity	= its_vpe_4_1_set_vcpu_affinity,
diff --git a/drivers/irqchip/irq-gic-v3-mbi.c b/drivers/irqchip/irq-gic-v3-mbi.c
index a69ac299a533..b0e919f78191 100644
--- a/drivers/irqchip/irq-gic-v3-mbi.c
+++ b/drivers/irqchip/irq-gic-v3-mbi.c
@@ -33,6 +33,7 @@ static struct irq_chip mbi_irq_chip = {
 	.name			= "MBI",
 	.irq_mask		= irq_chip_mask_parent,
 	.irq_unmask		= irq_chip_unmask_parent,
+	.irq_ack		= irq_chip_ack_parent,
 	.irq_eoi		= irq_chip_eoi_parent,
 	.irq_set_type		= irq_chip_set_type_parent,
 	.irq_set_affinity	= irq_chip_set_affinity_parent,
-- 
2.25.1