diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/io_apic.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 29 |
2 files changed, 24 insertions, 7 deletions
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index de3d8b04cf64..b775cf3622c3 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -171,6 +171,7 @@ extern u32 gsi_top; 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 void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); extern void __init pre_init_apic_IRQ0(void); @@ -212,6 +213,7 @@ extern void io_apic_eoi(unsigned int apic, unsigned int vector); static inline void ioapic_insert_resources(void) { } #define gsi_top (NR_IRQS_LEGACY) static inline int mp_find_ioapic(u32 gsi) { return 0; } +static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; } struct io_apic_irq_attr; static inline int io_apic_set_pci_routing(struct device *dev, int irq, diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 09e5c7b4df5a..424f795a1c78 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -117,6 +117,24 @@ struct mp_ioapic_gsi *mp_ioapic_gsi_routing(int ioapic_idx) return &ioapics[ioapic_idx].gsi_config; } +static inline int mp_ioapic_pin_count(int ioapic) +{ + struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(ioapic); + + return gsi_cfg->gsi_end - gsi_cfg->gsi_base + 1; +} + +u32 mp_pin_to_gsi(int ioapic, int pin) +{ + return mp_ioapic_gsi_routing(ioapic)->gsi_base + pin; +} + +/* Initialize all legacy IRQs and all pins on the first IOAPIC at boot */ +static inline int mp_init_irq_at_boot(int ioapic, int irq) +{ + return ioapic == 0 || (irq >= 0 && irq < NR_IRQS_LEGACY); +} + int nr_ioapics; /* The one past the highest gsi number used */ @@ -1367,8 +1385,7 @@ static void __init __io_apic_setup_irqs(unsigned int ioapic_idx) continue; irq = pin_2_irq(idx, ioapic_idx, pin); - - if ((ioapic_idx > 0) && (irq > NR_IRQS_LEGACY)) + if (!mp_init_irq_at_boot(ioapic_idx, irq)) continue; /* @@ -1419,9 +1436,7 @@ void setup_IO_APIC_irq_extra(u32 gsi) return; irq = pin_2_irq(idx, ioapic_idx, pin); - - /* Only handle the non legacy irqs on secondary ioapics */ - if (ioapic_idx == 0 || irq < NR_IRQS_LEGACY) + if (mp_init_irq_at_boot(ioapic_idx, irq)) return; set_io_apic_irq_attr(&attr, ioapic_idx, pin, irq_trigger(idx), @@ -3528,9 +3543,9 @@ void __init setup_ioapic_dest(void) irq_entry = find_irq_entry(ioapic, pin, mp_INT); if (irq_entry == -1) continue; - irq = pin_2_irq(irq_entry, ioapic, pin); - if ((ioapic > 0) && (irq > NR_IRQS_LEGACY)) + irq = pin_2_irq(irq_entry, ioapic, pin); + if (!mp_init_irq_at_boot(ioapic, irq)) continue; idata = irq_get_irq_data(irq); |