File: /Users/paulross/dev/linux/linux-3.13/arch/x86/include/asm/hw_irq.h

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       1: #ifndef _ASM_X86_HW_IRQ_H
       2: #define _ASM_X86_HW_IRQ_H
       3: 
       4: /*
       5:  * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
       6:  *
       7:  * moved some of the old arch/i386/kernel/irq.h to here. VY
       8:  *
       9:  * IRQ/IPI changes taken from work by Thomas Radke
      10:  * <tomsoft@informatik.tu-chemnitz.de>
      11:  *
      12:  * hacked by Andi Kleen for x86-64.
      13:  * unified by tglx
      14:  */
      15: 
      16: #include <asm/irq_vectors.h>
      17: 
      18: #ifndef __ASSEMBLY__
      19: 
      20: #include <linux/percpu.h>
      21: #include <linux/profile.h>
      22: #include <linux/smp.h>
      23: 
      24: #include <linux/atomic.h>
      25: #include <asm/irq.h>
      26: #include <asm/sections.h>
      27: 
      28: /* Interrupt handlers registered during init_IRQ */
      29: extern asmlinkage void apic_timer_interrupt(void);
      30: extern asmlinkage void x86_platform_ipi(void);
      31: extern asmlinkage void kvm_posted_intr_ipi(void);
      32: extern asmlinkage void error_interrupt(void);
      33: extern asmlinkage void irq_work_interrupt(void);
      34: 
      35: extern asmlinkage void spurious_interrupt(void);
      36: extern asmlinkage void thermal_interrupt(void);
      37: extern asmlinkage void reschedule_interrupt(void);
      38: 
      39: extern asmlinkage void invalidate_interrupt(void);
      40: extern asmlinkage void invalidate_interrupt0(void);
      41: extern asmlinkage void invalidate_interrupt1(void);
      42: extern asmlinkage void invalidate_interrupt2(void);
      43: extern asmlinkage void invalidate_interrupt3(void);
      44: extern asmlinkage void invalidate_interrupt4(void);
      45: extern asmlinkage void invalidate_interrupt5(void);
      46: extern asmlinkage void invalidate_interrupt6(void);
      47: extern asmlinkage void invalidate_interrupt7(void);
      48: extern asmlinkage void invalidate_interrupt8(void);
      49: extern asmlinkage void invalidate_interrupt9(void);
      50: extern asmlinkage void invalidate_interrupt10(void);
      51: extern asmlinkage void invalidate_interrupt11(void);
      52: extern asmlinkage void invalidate_interrupt12(void);
      53: extern asmlinkage void invalidate_interrupt13(void);
      54: extern asmlinkage void invalidate_interrupt14(void);
      55: extern asmlinkage void invalidate_interrupt15(void);
      56: extern asmlinkage void invalidate_interrupt16(void);
      57: extern asmlinkage void invalidate_interrupt17(void);
      58: extern asmlinkage void invalidate_interrupt18(void);
      59: extern asmlinkage void invalidate_interrupt19(void);
      60: extern asmlinkage void invalidate_interrupt20(void);
      61: extern asmlinkage void invalidate_interrupt21(void);
      62: extern asmlinkage void invalidate_interrupt22(void);
      63: extern asmlinkage void invalidate_interrupt23(void);
      64: extern asmlinkage void invalidate_interrupt24(void);
      65: extern asmlinkage void invalidate_interrupt25(void);
      66: extern asmlinkage void invalidate_interrupt26(void);
      67: extern asmlinkage void invalidate_interrupt27(void);
      68: extern asmlinkage void invalidate_interrupt28(void);
      69: extern asmlinkage void invalidate_interrupt29(void);
      70: extern asmlinkage void invalidate_interrupt30(void);
      71: extern asmlinkage void invalidate_interrupt31(void);
      72: 
      73: extern asmlinkage void irq_move_cleanup_interrupt(void);
      74: extern asmlinkage void reboot_interrupt(void);
      75: extern asmlinkage void threshold_interrupt(void);
      76: 
      77: extern asmlinkage void call_function_interrupt(void);
      78: extern asmlinkage void call_function_single_interrupt(void);
      79: 
      80: #ifdef CONFIG_TRACING
      81: /* Interrupt handlers registered during init_IRQ */
      82: extern void trace_apic_timer_interrupt(void);
      83: extern void trace_x86_platform_ipi(void);
      84: extern void trace_error_interrupt(void);
      85: extern void trace_irq_work_interrupt(void);
      86: extern void trace_spurious_interrupt(void);
      87: extern void trace_thermal_interrupt(void);
      88: extern void trace_reschedule_interrupt(void);
      89: extern void trace_threshold_interrupt(void);
      90: extern void trace_call_function_interrupt(void);
      91: extern void trace_call_function_single_interrupt(void);
      92: #define trace_irq_move_cleanup_interrupt  irq_move_cleanup_interrupt
      93: #define trace_reboot_interrupt  reboot_interrupt
      94: #define trace_kvm_posted_intr_ipi kvm_posted_intr_ipi
      95: #endif /* CONFIG_TRACING */
      96: 
      97: /* IOAPIC */
      98: #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
      99: extern unsigned long io_apic_irqs;
     100: 
     101: extern void init_VISWS_APIC_irqs(void);
     102: extern void setup_IO_APIC(void);
     103: extern void disable_IO_APIC(void);
     104: 
     105: struct io_apic_irq_attr {
     106:     int ioapic;
     107:     int ioapic_pin;
     108:     int trigger;
     109:     int polarity;
     110: };
     111: 
     112: static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
     113:                     int ioapic, int ioapic_pin,
     114:                     int trigger, int polarity)
     115: {
     116:     irq_attr->ioapic    = ioapic;
     117:     irq_attr->ioapic_pin    = ioapic_pin;
     118:     irq_attr->trigger    = trigger;
     119:     irq_attr->polarity    = polarity;
     120: }
     121: 
     122: /* Intel specific interrupt remapping information */
     123: struct irq_2_iommu {
     124:     struct intel_iommu *iommu;
     125:     u16 irte_index;
     126:     u16 sub_handle;
     127:     u8  irte_mask;
     128: };
     129: 
     130: /* AMD specific interrupt remapping information */
     131: struct irq_2_irte {
     132:     u16 devid; /* Device ID for IRTE table */
     133:     u16 index; /* Index into IRTE table*/
     134: };
     135: 
     136: /*
     137:  * This is performance-critical, we want to do it O(1)
     138:  *
     139:  * Most irqs are mapped 1:1 with pins.
     140:  */
     141: struct irq_cfg {
     142:     struct irq_pin_list    *irq_2_pin;
     143:     cpumask_var_t        domain;
     144:     cpumask_var_t        old_domain;
     145:     u8            vector;
     146:     u8            move_in_progress : 1;
     147: #ifdef CONFIG_IRQ_REMAP
     148:     u8            remapped : 1;
     149:     union {
     150:         struct irq_2_iommu irq_2_iommu;
     151:         struct irq_2_irte  irq_2_irte;
     152:     };
     153: #endif
     154: };
     155: 
     156: extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
     157: extern void send_cleanup_vector(struct irq_cfg *);
     158: 
     159: struct irq_data;
     160: int __ioapic_set_affinity(struct irq_data *, const struct cpumask *,
     161:               unsigned int *dest_id);
     162: extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr);
     163: extern void setup_ioapic_dest(void);
     164: 
     165: extern void enable_IO_APIC(void);
     166: 
     167: /* Statistics */
     168: extern atomic_t irq_err_count;
     169: extern atomic_t irq_mis_count;
     170: 
     171: /* EISA */
     172: extern void eisa_set_level_irq(unsigned int irq);
     173: 
     174: /* SMP */
     175: extern __visible void smp_apic_timer_interrupt(struct pt_regs *);
     176: extern __visible void smp_spurious_interrupt(struct pt_regs *);
     177: extern __visible void smp_x86_platform_ipi(struct pt_regs *);
     178: extern __visible void smp_error_interrupt(struct pt_regs *);
     179: #ifdef CONFIG_X86_IO_APIC
     180: extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
     181: #endif
     182: #ifdef CONFIG_SMP
     183: extern __visible void smp_reschedule_interrupt(struct pt_regs *);
     184: extern __visible void smp_call_function_interrupt(struct pt_regs *);
     185: extern __visible void smp_call_function_single_interrupt(struct pt_regs *);
     186: extern __visible void smp_invalidate_interrupt(struct pt_regs *);
     187: #endif
     188: 
     189: extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
     190: #ifdef CONFIG_TRACING
     191: #define trace_interrupt interrupt
     192: #endif
     193: 
     194: typedef int vector_irq_t[NR_VECTORS];
     195: DECLARE_PER_CPU(vector_irq_t, vector_irq);
     196: extern void setup_vector_irq(int cpu);
     197: 
     198: #ifdef CONFIG_X86_IO_APIC
     199: extern void lock_vector_lock(void);
     200: extern void unlock_vector_lock(void);
     201: extern void __setup_vector_irq(int cpu);
     202: #else
     203: static inline void lock_vector_lock(void) {}
     204: static inline void unlock_vector_lock(void) {}
     205: static inline void __setup_vector_irq(int cpu) {}
     206: #endif
     207: 
     208: #endif /* !ASSEMBLY_ */
     209: 
     210: #endif /* _ASM_X86_HW_IRQ_H */
     211: