diff options
| author | Marc Zyngier <maz@kernel.org> | 2019-12-24 14:10:25 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-01-22 17:22:19 +0300 |
| commit | f2d834092ee276610ccb6637e5109b61fc79ab89 (patch) | |
| tree | 73b60a407ad6f96659f25010ec542718f1e8f268 /drivers/irqchip/irq-gic-v3.c | |
| parent | b25319d279b63781b972c4966b4082193e69afac (diff) | |
| download | linux-f2d834092ee276610ccb6637e5109b61fc79ab89.tar.xz | |
irqchip/gic-v3: Add GICv4.1 VPEID size discovery
While GICv4.0 mandates 16 bit worth of VPEIDs, GICv4.1 allows smaller
implementations to be built. Add the required glue to dynamically
compute the limit.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20191224111055.11836-3-maz@kernel.org
Diffstat (limited to 'drivers/irqchip/irq-gic-v3.c')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index ffcb018395ed..286f98222878 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -1576,6 +1576,9 @@ static int __init gic_init_bases(void __iomem *dist_base, pr_info("%d SPIs implemented\n", GIC_LINE_NR - 32); pr_info("%d Extended SPIs implemented\n", GIC_ESPI_NR); + + gic_data.rdists.gicd_typer2 = readl_relaxed(gic_data.dist_base + GICD_TYPER2); + gic_data.domain = irq_domain_create_tree(handle, &gic_irq_domain_ops, &gic_data); irq_domain_update_bus_token(gic_data.domain, DOMAIN_BUS_WIRED); |