diff options
| -rw-r--r-- | arch/x86_64/kernel/i8259.c | 58 | ||||
| -rw-r--r-- | arch/x86_64/kernel/io_apic.c | 4 | ||||
| -rw-r--r-- | arch/x86_64/kernel/irq.c | 9 | ||||
| -rw-r--r-- | include/asm-x86_64/hw_irq.h | 1 |
4 files changed, 33 insertions, 39 deletions
diff --git a/arch/x86_64/kernel/i8259.c b/arch/x86_64/kernel/i8259.c index ae1101cd5252..bddde431871a 100644 --- a/arch/x86_64/kernel/i8259.c +++ b/arch/x86_64/kernel/i8259.c @@ -43,17 +43,10 @@ BI(x,8) BI(x,9) BI(x,a) BI(x,b) \ BI(x,c) BI(x,d) BI(x,e) BI(x,f) -#define BUILD_15_IRQS(x) \ - BI(x,0) BI(x,1) BI(x,2) BI(x,3) \ - BI(x,4) BI(x,5) BI(x,6) BI(x,7) \ - BI(x,8) BI(x,9) BI(x,a) BI(x,b) \ - BI(x,c) BI(x,d) BI(x,e) - /* * ISA PIC or low IO-APIC triggered (INTA-cycle or APIC) interrupts: * (these are usually mapped to vectors 0x20-0x2f) */ -BUILD_16_IRQS(0x0) /* * The IO-APIC gives us many more interrupt sources. Most of these @@ -65,17 +58,12 @@ BUILD_16_IRQS(0x0) * * (these are usually mapped into the 0x30-0xff vector range) */ - BUILD_16_IRQS(0x1) BUILD_16_IRQS(0x2) BUILD_16_IRQS(0x3) + BUILD_16_IRQS(0x2) BUILD_16_IRQS(0x3) BUILD_16_IRQS(0x4) BUILD_16_IRQS(0x5) BUILD_16_IRQS(0x6) BUILD_16_IRQS(0x7) BUILD_16_IRQS(0x8) BUILD_16_IRQS(0x9) BUILD_16_IRQS(0xa) BUILD_16_IRQS(0xb) -BUILD_16_IRQS(0xc) BUILD_16_IRQS(0xd) - -#ifdef CONFIG_PCI_MSI - BUILD_15_IRQS(0xe) -#endif +BUILD_16_IRQS(0xc) BUILD_16_IRQS(0xd) BUILD_16_IRQS(0xe) BUILD_16_IRQS(0xf) #undef BUILD_16_IRQS -#undef BUILD_15_IRQS #undef BI @@ -88,29 +76,15 @@ BUILD_16_IRQS(0xc) BUILD_16_IRQS(0xd) IRQ(x,8), IRQ(x,9), IRQ(x,a), IRQ(x,b), \ IRQ(x,c), IRQ(x,d), IRQ(x,e), IRQ(x,f) -#define IRQLIST_15(x) \ - IRQ(x,0), IRQ(x,1), IRQ(x,2), IRQ(x,3), \ - IRQ(x,4), IRQ(x,5), IRQ(x,6), IRQ(x,7), \ - IRQ(x,8), IRQ(x,9), IRQ(x,a), IRQ(x,b), \ - IRQ(x,c), IRQ(x,d), IRQ(x,e) - void (*interrupt[NR_IRQS])(void) = { - IRQLIST_16(0x0), - - IRQLIST_16(0x1), IRQLIST_16(0x2), IRQLIST_16(0x3), + IRQLIST_16(0x2), IRQLIST_16(0x3), IRQLIST_16(0x4), IRQLIST_16(0x5), IRQLIST_16(0x6), IRQLIST_16(0x7), IRQLIST_16(0x8), IRQLIST_16(0x9), IRQLIST_16(0xa), IRQLIST_16(0xb), - IRQLIST_16(0xc), IRQLIST_16(0xd) - -#ifdef CONFIG_PCI_MSI - , IRQLIST_15(0xe) -#endif - + IRQLIST_16(0xc), IRQLIST_16(0xd), IRQLIST_16(0xe), IRQLIST_16(0xf) }; #undef IRQ #undef IRQLIST_16 -#undef IRQLIST_14 /* * This is the 'legacy' 8259A Programmable Interrupt Controller, @@ -420,6 +394,26 @@ device_initcall(i8259A_init_sysfs); */ static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL}; +int vector_irq[NR_VECTORS] __read_mostly = { + [0 ... FIRST_EXTERNAL_VECTOR - 1] = -1, + [FIRST_EXTERNAL_VECTOR + 0] = 0, + [FIRST_EXTERNAL_VECTOR + 1] = 1, + [FIRST_EXTERNAL_VECTOR + 2] = 2, + [FIRST_EXTERNAL_VECTOR + 3] = 3, + [FIRST_EXTERNAL_VECTOR + 4] = 4, + [FIRST_EXTERNAL_VECTOR + 5] = 5, + [FIRST_EXTERNAL_VECTOR + 6] = 6, + [FIRST_EXTERNAL_VECTOR + 7] = 7, + [FIRST_EXTERNAL_VECTOR + 8] = 8, + [FIRST_EXTERNAL_VECTOR + 9] = 9, + [FIRST_EXTERNAL_VECTOR + 10] = 10, + [FIRST_EXTERNAL_VECTOR + 11] = 11, + [FIRST_EXTERNAL_VECTOR + 12] = 12, + [FIRST_EXTERNAL_VECTOR + 13] = 13, + [FIRST_EXTERNAL_VECTOR + 14] = 14, + [FIRST_EXTERNAL_VECTOR + 15] = 15, + [FIRST_EXTERNAL_VECTOR + 16 ... NR_VECTORS - 1] = -1 +}; void __init init_ISA_irqs (void) { @@ -517,8 +511,6 @@ void __init init_IRQ(void) */ for (i = 0; i < (NR_VECTORS - FIRST_EXTERNAL_VECTOR); i++) { int vector = FIRST_EXTERNAL_VECTOR + i; - if (i >= NR_IRQS) - break; if (vector != IA32_SYSCALL_VECTOR) set_intr_gate(vector, interrupt[i]); } @@ -528,7 +520,7 @@ void __init init_IRQ(void) * IRQ0 must be given a fixed assignment and initialized, * because it's used before the IO-APIC is set up. */ - set_intr_gate(FIRST_DEVICE_VECTOR, interrupt[0]); + vector_irq[FIRST_DEVICE_VECTOR] = 0; /* * The reschedule interrupt is a CPU-to-CPU reschedule-helper diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index bb16f3790f09..9f849492c296 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -615,6 +615,7 @@ next: } vector = current_vector; + vector_irq[vector] = irq; IO_APIC_VECTOR(irq) = vector; return vector; @@ -649,7 +650,6 @@ static void ioapic_register_intr(int irq, int vector, unsigned long trigger) else set_irq_chip_and_handler(irq, &ioapic_chip, handle_edge_irq); - set_intr_gate(vector, interrupt[irq]); } static void __init setup_IO_APIC_irqs(void) @@ -1420,7 +1420,6 @@ static inline void check_timer(void) */ disable_8259A_irq(0); vector = assign_irq_vector(0); - set_intr_gate(vector, interrupt[0]); /* * Subtle, code in do_timer_interrupt() expects an AEOI @@ -1671,7 +1670,6 @@ int create_irq(void) spin_unlock_irqrestore(&vector_lock, flags); if (irq >= 0) { - set_intr_gate(vector, interrupt[irq]); dynamic_irq_init(irq); } return irq; diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c index 609f97153b88..4542fb031994 100644 --- a/arch/x86_64/kernel/irq.c +++ b/arch/x86_64/kernel/irq.c @@ -105,7 +105,12 @@ skip: asmlinkage unsigned int do_IRQ(struct pt_regs *regs) { /* high bit used in ret_from_ code */ - unsigned irq = ~regs->orig_rax; + unsigned vector = ~regs->orig_rax; + unsigned irq; + + exit_idle(); + irq_enter(); + irq = vector_irq[vector]; if (unlikely(irq >= NR_IRQS)) { printk(KERN_EMERG "%s: cannot handle IRQ %d\n", @@ -113,8 +118,6 @@ asmlinkage unsigned int do_IRQ(struct pt_regs *regs) BUG(); } - exit_idle(); - irq_enter(); #ifdef CONFIG_DEBUG_STACKOVERFLOW stack_overflow_check(regs); #endif diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h index 1a8dc185a79f..9f6a0bfed727 100644 --- a/include/asm-x86_64/hw_irq.h +++ b/include/asm-x86_64/hw_irq.h @@ -74,6 +74,7 @@ #ifndef __ASSEMBLY__ extern u8 irq_vector[NR_IRQ_VECTORS]; +extern int vector_irq[NR_VECTORS]; #define IO_APIC_VECTOR(irq) (irq_vector[irq]) /* |