diff options
| -rw-r--r-- | arch/x86/include/asm/io_apic.h | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 42 | ||||
| -rw-r--r-- | arch/x86/kernel/devicetree.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/mpparse.c | 2 | ||||
| -rw-r--r-- | arch/x86/platform/sfi/sfi.c | 2 |
6 files changed, 47 insertions, 6 deletions
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 64c6e344399..3e4bea3a52b 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -190,7 +190,8 @@ extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); extern u32 mp_pin_to_gsi(int ioapic, int pin); extern int mp_map_gsi_to_irq(u32 gsi, unsigned int flags); -extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); +extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, + struct ioapic_domain_cfg *cfg); extern void __init pre_init_apic_IRQ0(void); extern void mp_save_irq(struct mpc_intsrc *m); diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index d6635baf9e3..f86b4bae464 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -462,7 +462,7 @@ acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) acpi_table_print_madt_entry(header); mp_register_ioapic(ioapic->id, - ioapic->address, ioapic->global_irq_base); + ioapic->address, ioapic->global_irq_base, NULL); return 0; } diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 51ce80004a7..563f4504f54 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -85,6 +85,7 @@ int sis_apic_bug = -1; static DEFINE_RAW_SPINLOCK(ioapic_lock); static DEFINE_RAW_SPINLOCK(vector_lock); static DEFINE_MUTEX(ioapic_mutex); +static unsigned int ioapic_dynirq_base; static struct ioapic { /* @@ -2920,8 +2921,35 @@ out: */ #define PIC_IRQS (1UL << PIC_CASCADE_IR) +static int mp_irqdomain_create(int ioapic) +{ + int hwirqs = mp_ioapic_pin_count(ioapic); + struct ioapic *ip = &ioapics[ioapic]; + struct ioapic_domain_cfg *cfg = &ip->irqdomain_cfg; + struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(ioapic); + + if (cfg->type == IOAPIC_DOMAIN_INVALID) + return 0; + + ip->irqdomain = irq_domain_add_linear(cfg->dev, hwirqs, cfg->ops, + (void *)(long)ioapic); + if(!ip->irqdomain) + return -ENOMEM; + + if (cfg->type == IOAPIC_DOMAIN_LEGACY || + cfg->type == IOAPIC_DOMAIN_STRICT) + ioapic_dynirq_base = max(ioapic_dynirq_base, + gsi_cfg->gsi_end + 1); + + if (gsi_cfg->gsi_base == 0) + irq_set_default_host(ip->irqdomain); + + return 0; +} + void __init setup_IO_APIC(void) { + int ioapic; /* * calling enable_IO_APIC() is moved to setup_local_APIC for BP @@ -2929,6 +2957,9 @@ void __init setup_IO_APIC(void) io_apic_irqs = nr_legacy_irqs() ? ~PIC_IRQS : ~0UL; apic_printk(APIC_VERBOSE, "ENABLING IO-APIC IRQs\n"); + for_each_ioapic(ioapic) + BUG_ON(mp_irqdomain_create(ioapic)); + /* * Set up IO-APIC IRQ routing. */ @@ -3437,6 +3468,9 @@ unsigned int arch_dynirq_lower_bound(unsigned int from) { unsigned int min = gsi_top + nr_legacy_irqs(); + if (ioapic_dynirq_base) + return ioapic_dynirq_base; + return from < min ? min : from; } @@ -3812,7 +3846,8 @@ static __init int bad_ioapic_register(int idx) return 0; } -void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) +void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, + struct ioapic_domain_cfg *cfg) { int idx = 0; int entries; @@ -3826,6 +3861,11 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) ioapics[idx].mp_config.type = MP_IOAPIC; ioapics[idx].mp_config.flags = MPC_APIC_USABLE; ioapics[idx].mp_config.apicaddr = address; + ioapics[idx].irqdomain = NULL; + if (cfg) + ioapics[idx].irqdomain_cfg = *cfg; + else + ioapics[idx].irqdomain_cfg.type = IOAPIC_DOMAIN_INVALID; set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index b4680058db8..d2c53feacd7 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -177,7 +177,7 @@ static void __init dtb_add_ioapic(struct device_node *dn) dn->full_name); return; } - mp_register_ioapic(++ioapic_id, r.start, gsi_top); + mp_register_ioapic(++ioapic_id, r.start, gsi_top, NULL); } static void __init dtb_ioapic_setup(void) diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index b10e1132f31..ea8595e4cbd 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -115,7 +115,7 @@ static void __init MP_bus_info(struct mpc_bus *m) static void __init MP_ioapic_info(struct mpc_ioapic *m) { if (m->flags & MPC_APIC_USABLE) - mp_register_ioapic(m->apicid, m->apicaddr, gsi_top); + mp_register_ioapic(m->apicid, m->apicaddr, gsi_top, NULL); } static void __init print_mp_irq_info(struct mpc_intsrc *mp_irq) diff --git a/arch/x86/platform/sfi/sfi.c b/arch/x86/platform/sfi/sfi.c index bcd1a703e3e..8f2f789c6f0 100644 --- a/arch/x86/platform/sfi/sfi.c +++ b/arch/x86/platform/sfi/sfi.c @@ -82,7 +82,7 @@ static int __init sfi_parse_ioapic(struct sfi_table_header *table) pentry = (struct sfi_apic_table_entry *)sb->pentry; for (i = 0; i < num; i++) { - mp_register_ioapic(i, pentry->phys_addr, gsi_top); + mp_register_ioapic(i, pentry->phys_addr, gsi_top, NULL); pentry++; } |