linux-kernel - [PATCH v3 4/6] irqchip/gic: Add functions to access irq priorities

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Message-Id: <1526902515-13769-5-git-send-email-julien.thierry@arm.com>
Date:   Mon, 21 May 2018 12:35:13 +0100
From:   Julien Thierry <julien.thierry@....com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, marc.zyngier@....com,
        mark.rutland@....com, christoffer.dall@....com,
        james.morse@....com, joelaf@...gle.com, joel.opensrc@...il.com,
        daniel.thompson@...aro.org, catalin.marinas@....com,
        will.deacon@....com, Julien Thierry <julien.thierry@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>
Subject: [PATCH v3 4/6] irqchip/gic: Add functions to access irq priorities

Signed-off-by: Julien Thierry <julien.thierry@....com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Marc Zyngier <marc.zyngier@....com>
---
 drivers/irqchip/irq-gic-common.c | 10 ++++++++++
 drivers/irqchip/irq-gic-common.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/irqchip/irq-gic-common.c b/drivers/irqchip/irq-gic-common.c
index 01e673c..910746f 100644
--- a/drivers/irqchip/irq-gic-common.c
+++ b/drivers/irqchip/irq-gic-common.c
@@ -98,6 +98,16 @@ int gic_configure_irq(unsigned int irq, unsigned int type,
 	return ret;
 }

+void gic_set_irq_prio(unsigned int irq, void __iomem *base, u8 prio)
+{
+	writeb_relaxed(prio, base + GIC_DIST_PRI + irq);
+}
+
+u8 gic_get_irq_prio(unsigned int irq, void __iomem *base)
+{
+	return readb_relaxed(base + GIC_DIST_PRI + irq);
+}
+
 void gic_dist_config(void __iomem *base, int gic_irqs,
 		     void (*sync_access)(void))
 {
diff --git a/drivers/irqchip/irq-gic-common.h b/drivers/irqchip/irq-gic-common.h
index 3919cd7..1586dbd 100644
--- a/drivers/irqchip/irq-gic-common.h
+++ b/drivers/irqchip/irq-gic-common.h
@@ -35,6 +35,8 @@ void gic_dist_config(void __iomem *base, int gic_irqs,
 void gic_cpu_config(void __iomem *base, void (*sync_access)(void));
 void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
 		void *data);
+void gic_set_irq_prio(unsigned int irq, void __iomem *base, u8 prio);
+u8 gic_get_irq_prio(unsigned int irq, void __iomem *base);

 void gic_set_kvm_info(const struct gic_kvm_info *info);

--
1.9.1