Messages in this thread Patch in this message | | | From | James Morse <> | Subject | [PATCH 1/2] irqchip/gic-v3: Add __gic_get_ppi_index() to find the PPI number from hwirq | Date | Thu, 29 Jul 2021 17:27:47 +0000 |
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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 <james.morse@arm.com> --- drivers/irqchip/irq-gic-v3.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
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); -- 2.30.2
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