Add the basic GICv4 VPE (vcpu in GICv4 parlance) infrastructure (irqchip, irq domain) that is going to be populated in the following patches.
Reviewed-by: Eric Auger <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> --- drivers/irqchip/irq-gic-v3-its.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 2e5e0499a0e6..0fd799c88d18 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -2023,6 +2023,13 @@ static const struct irq_domain_ops its_domain_ops = { .deactivate = its_irq_domain_deactivate, }; +static struct irq_chip its_vpe_irq_chip = { + .name = "GICv4-vpe", +}; + +static const struct irq_domain_ops its_vpe_domain_ops = { +}; + static int its_force_quiescent(void __iomem *base) { u32 count = 1000000; /* 1s */ @@ -2139,6 +2146,11 @@ static int its_init_domain(struct fwnode_handle *handle, struct its_node *its) return 0; } +static int its_init_vpe_domain(void) +{ + return 0; +} + static int __init its_compute_its_list_map(struct resource *res, void __iomem *its_base) { @@ -2404,6 +2416,8 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists, struct irq_domain *parent_domain) { struct device_node *of_node; + struct its_node *its; + bool has_v4 = false; its_parent = parent_domain; of_node = to_of_node(handle); @@ -2421,5 +2435,15 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists, its_alloc_lpi_tables(); its_lpi_init(rdists->id_bits); + list_for_each_entry(its, &its_nodes, entry) + has_v4 |= its->is_v4; + + if (has_v4 & rdists->has_vlpis) { + if (its_init_vpe_domain()) { + rdists->has_vlpis = false; + pr_err("ITS: Disabling GICv4 support\n"); + } + } + return 0; } -- 2.11.0 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
