x86/apic: Add select() method on vector irqdomain (6452ea2a) · Commits · 戴 / test

arch/x86/include/asm/irqdomain.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -12,6 +12,9 @@ enum {
		X86_IRQ_ALLOC_LEGACY = 0x2,
		};

		extern int x86_fwspec_is_ioapic(struct irq_fwspec *fwspec);
		extern int x86_fwspec_is_hpet(struct irq_fwspec *fwspec);

		extern struct irq_domain *x86_vector_domain;

		extern void init_irq_alloc_info(struct irq_alloc_info *info,

+43 −0

Original line number	Diff line number	Diff line
		@@ -636,7 +636,50 @@ static void x86_vector_debug_show(struct seq_file m, struct irq_domain d,
		}
		#endif

		int x86_fwspec_is_ioapic(struct irq_fwspec *fwspec)
		{
		if (fwspec->param_count != 1)
		return 0;

		if (is_fwnode_irqchip(fwspec->fwnode)) {
		const char *fwname = fwnode_get_name(fwspec->fwnode);
		return fwname && !strncmp(fwname, "IO-APIC-", 8) &&
		simple_strtol(fwname+8, NULL, 10) == fwspec->param[0];
		}
		return to_of_node(fwspec->fwnode) &&
		of_device_is_compatible(to_of_node(fwspec->fwnode),
		"intel,ce4100-ioapic");
		}

		int x86_fwspec_is_hpet(struct irq_fwspec *fwspec)
		{
		if (fwspec->param_count != 1)
		return 0;

		if (is_fwnode_irqchip(fwspec->fwnode)) {
		const char *fwname = fwnode_get_name(fwspec->fwnode);
		return fwname && !strncmp(fwname, "HPET-MSI-", 9) &&
		simple_strtol(fwname+9, NULL, 10) == fwspec->param[0];
		}
		return 0;
		}

		static int x86_vector_select(struct irq_domain d, struct irq_fwspec fwspec,
		enum irq_domain_bus_token bus_token)
		{
		/*
		* HPET and I/OAPIC cannot be parented in the vector domain
		* if IRQ remapping is enabled. APIC IDs above 15 bits are
		* only permitted if IRQ remapping is enabled, so check that.
		*/
		if (apic->apic_id_valid(32768))
		return 0;

		return x86_fwspec_is_ioapic(fwspec) \|\| x86_fwspec_is_hpet(fwspec);
		}

		static const struct irq_domain_ops x86_vector_domain_ops = {
		.select = x86_vector_select,
		.alloc = x86_vector_alloc_irqs,
		.free = x86_vector_free_irqs,
		.activate = x86_vector_activate,