diff options
| -rw-r--r-- | arch/x86/include/asm/irqdomain.h | 6 | ||||
| -rw-r--r-- | arch/x86/include/asm/x86_init.h | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/msi.c | 31 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/vector.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/x86_init.c | 4 | ||||
| -rw-r--r-- | arch/x86/pci/init.c | 3 |
6 files changed, 32 insertions, 17 deletions
diff --git a/arch/x86/include/asm/irqdomain.h b/arch/x86/include/asm/irqdomain.h index c066ffae222b..430486f65a9b 100644 --- a/arch/x86/include/asm/irqdomain.h +++ b/arch/x86/include/asm/irqdomain.h @@ -51,9 +51,11 @@ extern int mp_irqdomain_ioapic_idx(struct irq_domain *domain); #endif /* CONFIG_X86_IO_APIC */ #ifdef CONFIG_PCI_MSI -extern void arch_init_msi_domain(struct irq_domain *domain); +void x86_create_pci_msi_domain(void); +struct irq_domain *native_create_pci_msi_domain(void); #else -static inline void arch_init_msi_domain(struct irq_domain *domain) { } +static inline void x86_create_pci_msi_domain(void) { } +#define native_create_pci_msi_domain NULL #endif #endif diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 7cc32e7a94b2..f96d600db87a 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -8,6 +8,7 @@ struct mpc_bus; struct mpc_cpu; struct mpc_table; struct cpuinfo_x86; +struct irq_domain; /** * struct x86_init_mpparse - platform specific mpparse ops @@ -42,12 +43,14 @@ struct x86_init_resources { * @intr_init: interrupt init code * @intr_mode_select: interrupt delivery mode selection * @intr_mode_init: interrupt delivery mode setup + * @create_pci_msi_domain: Create the PCI/MSI interrupt domain */ struct x86_init_irqs { void (*pre_vector_init)(void); void (*intr_init)(void); void (*intr_mode_select)(void); void (*intr_mode_init)(void); + struct irq_domain *(*create_pci_msi_domain)(void); }; /** 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 diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 66516d818d7a..1eac53632786 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -714,8 +714,6 @@ int __init arch_early_irq_init(void) BUG_ON(x86_vector_domain == NULL); irq_set_default_host(x86_vector_domain); - arch_init_msi_domain(x86_vector_domain); - BUG_ON(!alloc_cpumask_var(&vector_searchmask, GFP_KERNEL)); /* diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index cec6f6abea6e..bb44ad868f49 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -24,6 +24,7 @@ #include <asm/tsc.h> #include <asm/iommu.h> #include <asm/mach_traps.h> +#include <asm/irqdomain.h> void x86_init_noop(void) { } void __init x86_init_uint_noop(unsigned int unused) { } @@ -76,7 +77,8 @@ struct x86_init_ops x86_init __initdata = { .pre_vector_init = init_ISA_irqs, .intr_init = native_init_IRQ, .intr_mode_select = apic_intr_mode_select, - .intr_mode_init = apic_intr_mode_init + .intr_mode_init = apic_intr_mode_init, + .create_pci_msi_domain = native_create_pci_msi_domain, }, .oem = { diff --git a/arch/x86/pci/init.c b/arch/x86/pci/init.c index bf6690935943..00bfa1ebad6c 100644 --- a/arch/x86/pci/init.c +++ b/arch/x86/pci/init.c @@ -3,6 +3,7 @@ #include <linux/init.h> #include <asm/pci_x86.h> #include <asm/x86_init.h> +#include <asm/irqdomain.h> /* arch_initcall has too random ordering, so call the initializers in the right sequence from here. */ @@ -10,6 +11,8 @@ static __init int pci_arch_init(void) { int type; + x86_create_pci_msi_domain(); + type = pci_direct_probe(); if (!(pci_probe & PCI_PROBE_NOEARLY)) |