diff options
Diffstat (limited to 'arch/x86/kernel/apic/msi.c')
| -rw-r--r-- | arch/x86/kernel/apic/msi.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c index 378c692a4170..39136f7bde70 100644 --- a/arch/x86/kernel/apic/msi.c +++ b/arch/x86/kernel/apic/msi.c @@ -21,7 +21,7 @@ #include <asm/apic.h> #include <asm/irq_remapping.h> -static struct irq_domain *msi_default_domain; +static struct irq_domain *x86_pci_msi_default_domain __ro_after_init; static void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg) { @@ -191,7 +191,7 @@ int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) domain = irq_remapping_get_irq_domain(&info); if (domain == NULL) - domain = msi_default_domain; + domain = x86_pci_msi_default_domain; if (domain == NULL) return -ENOSYS; @@ -234,25 +234,32 @@ static struct msi_domain_info pci_msi_domain_info = { .handler_name = "edge", }; -void __init arch_init_msi_domain(struct irq_domain *parent) +struct irq_domain * __init native_create_pci_msi_domain(void) { struct fwnode_handle *fn; + struct irq_domain *d; if (disable_apic) - return; + return NULL; fn = irq_domain_alloc_named_fwnode("PCI-MSI"); - if (fn) { - msi_default_domain = - pci_msi_create_irq_domain(fn, &pci_msi_domain_info, - parent); - } - if (!msi_default_domain) { + if (!fn) + return NULL; + + d = pci_msi_create_irq_domain(fn, &pci_msi_domain_info, + x86_vector_domain); + if (!d) { irq_domain_free_fwnode(fn); - pr_warn("failed to initialize irqdomain for MSI/MSI-x.\n"); + pr_warn("Failed to initialize PCI-MSI irqdomain.\n"); } else { - msi_default_domain->flags |= IRQ_DOMAIN_MSI_NOMASK_QUIRK; + d->flags |= IRQ_DOMAIN_MSI_NOMASK_QUIRK; } + return d; +} + +void __init x86_create_pci_msi_domain(void) +{ + x86_pci_msi_default_domain = x86_init.irqs.create_pci_msi_domain(); } #ifdef CONFIG_IRQ_REMAP |