arch/x86/include/asm/hw_irq.h

   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 #ifdef CONFIG_IRQ_REMAP
  98 /* Intel specific interrupt remapping information */
  99 struct irq_2_iommu {
 100         struct intel_iommu *iommu;
 101         u16 irte_index;
 102         u16 sub_handle;
 103         u8  irte_mask;
 104 };
 105
 106 /* AMD specific interrupt remapping information */
 107 struct irq_2_irte {
 108         u16 devid; /* Device ID for IRTE table */
 109         u16 index; /* Index into IRTE table*/
 110 };
 111 #endif  /* CONFIG_IRQ_REMAP */
 112
 113 #ifdef  CONFIG_X86_LOCAL_APIC
 114 struct irq_data;
 115 struct irq_domain;
 116 struct pci_dev;
 117 struct msi_desc;
 118
 119 enum irq_alloc_type {
 120         X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
 121         X86_IRQ_ALLOC_TYPE_HPET,
 122         X86_IRQ_ALLOC_TYPE_MSI,
 123         X86_IRQ_ALLOC_TYPE_MSIX,
 124 };
 125
 126 struct irq_alloc_info {
 127         enum irq_alloc_type     type;
 128         u32                     flags;
 129         const struct cpumask    *mask;  /* CPU mask for vector allocation */
 130         union {
 131                 int             unused;
 132 #ifdef  CONFIG_HPET_TIMER
 133                 struct {
 134                         int             hpet_id;
 135                         int             hpet_index;
 136                         void            *hpet_data;
 137                 };
 138 #endif
 139 #ifdef  CONFIG_PCI_MSI
 140                 struct {
 141                         struct pci_dev  *msi_dev;
 142                         irq_hw_number_t msi_hwirq;
 143                 };
 144 #endif
 145 #ifdef  CONFIG_X86_IO_APIC
 146                 struct {
 147                         int             ioapic_id;
 148                         int             ioapic_pin;
 149                         int             ioapic_node;
 150                         u32             ioapic_trigger : 1;
 151                         u32             ioapic_polarity : 1;
 152                         u32             ioapic_valid : 1;
 153                         struct IO_APIC_route_entry *ioapic_entry;
 154                 };
 155 #endif
 156         };
 157 };
 158
 159 enum {
 160         /* Allocate contiguous CPU vectors */
 161         X86_IRQ_ALLOC_CONTIGUOUS_VECTORS                = 0x1,
 162 };
 163
 164 struct irq_cfg {
 165         cpumask_var_t           domain;
 166         cpumask_var_t           old_domain;
 167         unsigned int            dest_apicid;
 168         u8                      vector;
 169         u8                      move_in_progress : 1;
 170 #ifdef CONFIG_IRQ_REMAP
 171         u8                      remapped : 1;
 172         union {
 173                 struct irq_2_iommu irq_2_iommu;
 174                 struct irq_2_irte  irq_2_irte;
 175         };
 176 #endif
 177         union {
 178 #ifdef CONFIG_X86_IO_APIC
 179                 struct {
 180                         struct list_head        irq_2_pin;
 181                 };
 182 #endif
 183         };
 184 };
 185
 186 extern struct irq_domain *x86_vector_domain;
 187
 188 extern void init_irq_alloc_info(struct irq_alloc_info *info,
 189                                 const struct cpumask *mask);
 190 extern void copy_irq_alloc_info(struct irq_alloc_info *dst,
 191                                 struct irq_alloc_info *src);
 192 extern struct irq_cfg *irq_cfg(unsigned int irq);
 193 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
 194 extern struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node);
 195 extern void lock_vector_lock(void);
 196 extern void unlock_vector_lock(void);
 197 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
 198 extern void clear_irq_vector(int irq, struct irq_cfg *cfg);
 199 extern void setup_vector_irq(int cpu);
 200 #ifdef CONFIG_SMP
 201 extern void send_cleanup_vector(struct irq_cfg *);
 202 extern void irq_complete_move(struct irq_cfg *cfg);
 203 #else
 204 static inline void send_cleanup_vector(struct irq_cfg *c) { }
 205 static inline void irq_complete_move(struct irq_cfg *c) { }
 206 #endif
 207
 208 extern int apic_retrigger_irq(struct irq_data *data);
 209 extern void apic_ack_edge(struct irq_data *data);
 210 extern int apic_set_affinity(struct irq_data *data, const struct cpumask *mask,
 211                              unsigned int *dest_id);
 212 #else   /*  CONFIG_X86_LOCAL_APIC */
 213 static inline void lock_vector_lock(void) {}
 214 static inline void unlock_vector_lock(void) {}
 215 #endif  /* CONFIG_X86_LOCAL_APIC */
 216
 217 /* Statistics */
 218 extern atomic_t irq_err_count;
 219 extern atomic_t irq_mis_count;
 220
 221 /* EISA */
 222 extern void eisa_set_level_irq(unsigned int irq);
 223
 224 /* SMP */
 225 extern __visible void smp_apic_timer_interrupt(struct pt_regs *);
 226 extern __visible void smp_spurious_interrupt(struct pt_regs *);
 227 extern __visible void smp_x86_platform_ipi(struct pt_regs *);
 228 extern __visible void smp_error_interrupt(struct pt_regs *);
 229 #ifdef CONFIG_X86_IO_APIC
 230 extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
 231 #endif
 232 #ifdef CONFIG_SMP
 233 extern __visible void smp_reschedule_interrupt(struct pt_regs *);
 234 extern __visible void smp_call_function_interrupt(struct pt_regs *);
 235 extern __visible void smp_call_function_single_interrupt(struct pt_regs *);
 236 extern __visible void smp_invalidate_interrupt(struct pt_regs *);
 237 #endif
 238
 239 extern char irq_entries_start[];
 240 #ifdef CONFIG_TRACING
 241 #define trace_irq_entries_start irq_entries_start
 242 #endif
 243
 244 #define VECTOR_UNDEFINED        (-1)
 245 #define VECTOR_RETRIGGERED      (-2)
 246
 247 typedef int vector_irq_t[NR_VECTORS];
 248 DECLARE_PER_CPU(vector_irq_t, vector_irq);
 249
 250 #endif /* !ASSEMBLY_ */
 251
 252 #endif /* _ASM_X86_HW_IRQ_H */