From f2d834092ee276610ccb6637e5109b61fc79ab89 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 24 Dec 2019 11:10:25 +0000 Subject: 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 Reviewed-by: Zenghui Yu Link: https://lore.kernel.org/r/20191224111055.11836-3-maz@kernel.org --- drivers/irqchip/irq-gic-v3.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/irqchip/irq-gic-v3.c') 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); -- cgit v1.2.3