[PATCH v7 20/25] irqchip/gic: Add functions to access irq priorities

From: Julien Thierry
Date: Wed Dec 12 2018 - 11:48:45 EST


Add accessors to the GIC distributor/redistributors priority registers.

Signed-off-by: Julien Thierry <julien.thierry@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
---
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