From bfa80ee9ce6e2f18da76459c3dd7b0ad57fb2c20 Mon Sep 17 00:00:00 2001 From: James Morse Date: Thu, 29 Jul 2021 17:27:47 +0000 Subject: irqchip/gic-v3: Add __gic_get_ppi_index() to find the PPI number from hwirq gic_get_ppi_index() is a useful concept for ppi partitions, as the GIC has two PPI ranges but needs mapping to a single range when used as an index in the gic_data.ppi_descs[] array. Add a double-underscore version which takes just the intid. This will be used in the partition domain select and translate helpers to enable partition support for the EPPI range. Signed-off-by: James Morse Reviewed-by: Valentin Schneider Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20210729172748.28841-2-james.morse@arm.com --- drivers/irqchip/irq-gic-v3.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers/irqchip') diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index e0f4debe64e1..b24f0a9d2876 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -446,18 +446,23 @@ static void gic_irq_set_prio(struct irq_data *d, u8 prio) writeb_relaxed(prio, base + offset + index); } -static u32 gic_get_ppi_index(struct irq_data *d) +static u32 __gic_get_ppi_index(irq_hw_number_t hwirq) { - switch (get_intid_range(d)) { + switch (__get_intid_range(hwirq)) { case PPI_RANGE: - return d->hwirq - 16; + return hwirq - 16; case EPPI_RANGE: - return d->hwirq - EPPI_BASE_INTID + 16; + return hwirq - EPPI_BASE_INTID + 16; default: unreachable(); } } +static u32 gic_get_ppi_index(struct irq_data *d) +{ + return __gic_get_ppi_index(d->hwirq); +} + static int gic_irq_nmi_setup(struct irq_data *d) { struct irq_desc *desc = irq_to_desc(d->irq); -- cgit v1.2.3