diff options
| author | James Morse <james.morse@arm.com> | 2021-07-29 20:27:47 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-08-12 10:11:03 +0300 |
| commit | bfa80ee9ce6e2f18da76459c3dd7b0ad57fb2c20 (patch) | |
| tree | 993a3f4b67517387f6865092edc3ef1ddcd3f8e6 /drivers/irqchip | |
| parent | ff1176468d368232b684f75e82563369208bc371 (diff) | |
| download | linux-bfa80ee9ce6e2f18da76459c3dd7b0ad57fb2c20.tar.xz | |
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 <james.morse@arm.com>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210729172748.28841-2-james.morse@arm.com
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3.c | 13 |
1 files 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); |