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x86/MSI: Use hierarchical irqdomains to manage MSI interrupts
[deliverable/linux.git] / arch / x86 / include / asm / hw_irq.h
CommitLineData
1965aae3
PA		 1#ifndef _ASM_X86_HW_IRQ_H
2#define _ASM_X86_HW_IRQ_H
2e088436
TG		 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
9b7dc567 16#include <asm/irq_vectors.h>
2e088436
TG		 17
18#ifndef __ASSEMBLY__
19
20#include <linux/percpu.h>
21#include <linux/profile.h>
22#include <linux/smp.h>
23
60063497 24#include <linux/atomic.h>
2e088436
TG		 25#include <asm/irq.h>
26#include <asm/sections.h>
27
2e088436 28/* Interrupt handlers registered during init_IRQ */
1d9090e2
AK		 29extern asmlinkage void apic_timer_interrupt(void);
30extern asmlinkage void x86_platform_ipi(void);
31extern asmlinkage void kvm_posted_intr_ipi(void);
32extern asmlinkage void error_interrupt(void);
33extern asmlinkage void irq_work_interrupt(void);
34
35extern asmlinkage void spurious_interrupt(void);
36extern asmlinkage void thermal_interrupt(void);
37extern asmlinkage void reschedule_interrupt(void);
38
39extern asmlinkage void invalidate_interrupt(void);
40extern asmlinkage void invalidate_interrupt0(void);
41extern asmlinkage void invalidate_interrupt1(void);
42extern asmlinkage void invalidate_interrupt2(void);
43extern asmlinkage void invalidate_interrupt3(void);
44extern asmlinkage void invalidate_interrupt4(void);
45extern asmlinkage void invalidate_interrupt5(void);
46extern asmlinkage void invalidate_interrupt6(void);
47extern asmlinkage void invalidate_interrupt7(void);
48extern asmlinkage void invalidate_interrupt8(void);
49extern asmlinkage void invalidate_interrupt9(void);
50extern asmlinkage void invalidate_interrupt10(void);
51extern asmlinkage void invalidate_interrupt11(void);
52extern asmlinkage void invalidate_interrupt12(void);
53extern asmlinkage void invalidate_interrupt13(void);
54extern asmlinkage void invalidate_interrupt14(void);
55extern asmlinkage void invalidate_interrupt15(void);
56extern asmlinkage void invalidate_interrupt16(void);
57extern asmlinkage void invalidate_interrupt17(void);
58extern asmlinkage void invalidate_interrupt18(void);
59extern asmlinkage void invalidate_interrupt19(void);
60extern asmlinkage void invalidate_interrupt20(void);
61extern asmlinkage void invalidate_interrupt21(void);
62extern asmlinkage void invalidate_interrupt22(void);
63extern asmlinkage void invalidate_interrupt23(void);
64extern asmlinkage void invalidate_interrupt24(void);
65extern asmlinkage void invalidate_interrupt25(void);
66extern asmlinkage void invalidate_interrupt26(void);
67extern asmlinkage void invalidate_interrupt27(void);
68extern asmlinkage void invalidate_interrupt28(void);
69extern asmlinkage void invalidate_interrupt29(void);
70extern asmlinkage void invalidate_interrupt30(void);
71extern asmlinkage void invalidate_interrupt31(void);
72
73extern asmlinkage void irq_move_cleanup_interrupt(void);
74extern asmlinkage void reboot_interrupt(void);
75extern asmlinkage void threshold_interrupt(void);
76
77extern asmlinkage void call_function_interrupt(void);
78extern asmlinkage void call_function_single_interrupt(void);
2e088436 79
cf910e83
SA		 80#ifdef CONFIG_TRACING
81/* Interrupt handlers registered during init_IRQ */
82extern void trace_apic_timer_interrupt(void);
83extern void trace_x86_platform_ipi(void);
84extern void trace_error_interrupt(void);
85extern void trace_irq_work_interrupt(void);
86extern void trace_spurious_interrupt(void);
87extern void trace_thermal_interrupt(void);
88extern void trace_reschedule_interrupt(void);
89extern void trace_threshold_interrupt(void);
90extern void trace_call_function_interrupt(void);
91extern 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
26011eee 97#ifdef CONFIG_IRQ_REMAP
819508d3 98/* Intel specific interrupt remapping information */
423f0859
TG		 99struct irq_2_iommu {
100 struct intel_iommu *iommu;
101 u16 irte_index;
102 u16 sub_handle;
103 u8 irte_mask;
104};
105
819508d3
JR		 106/* AMD specific interrupt remapping information */
107struct irq_2_irte {
108 u16 devid; /* Device ID for IRTE table */
109 u16 index; /* Index into IRTE table*/
110};
26011eee 111#endif /* CONFIG_IRQ_REMAP */
819508d3 112
52f518a3
JL		 113struct irq_domain;
114
26011eee 115#ifdef CONFIG_X86_LOCAL_APIC
74afab7a 116struct irq_data;
947045a2
JL		 117struct pci_dev;
118struct msi_desc;
119
120enum irq_alloc_type {
121 X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
122 X86_IRQ_ALLOC_TYPE_HPET,
123 X86_IRQ_ALLOC_TYPE_MSI,
124 X86_IRQ_ALLOC_TYPE_MSIX,
125};
b5dc8e6c
JL		 126
127struct irq_alloc_info {
947045a2 128 enum irq_alloc_type type;
b5dc8e6c
JL		 129 u32 flags;
130 const struct cpumask *mask; /* CPU mask for vector allocation */
947045a2
JL		 131 union {
132 int unused;
133#ifdef CONFIG_HPET_TIMER
134 struct {
135 int hpet_id;
136 int hpet_index;
137 void *hpet_data;
138 };
139#endif
140#ifdef CONFIG_PCI_MSI
141 struct {
142 struct pci_dev *msi_dev;
143 irq_hw_number_t msi_hwirq;
144 };
145#endif
146#ifdef CONFIG_X86_IO_APIC
147 struct {
148 int ioapic_id;
149 int ioapic_pin;
150 int ioapic_node;
151 u32 ioapic_trigger : 1;
152 u32 ioapic_polarity : 1;
153 u32 ioapic_valid : 1;
154 struct IO_APIC_route_entry *ioapic_entry;
155 };
156#endif
157 };
b5dc8e6c
JL		 158};
159
160enum {
161 /* Allocate contiguous CPU vectors */
162 X86_IRQ_ALLOC_CONTIGUOUS_VECTORS = 0x1,
163};
74afab7a 164
9338ad6f 165struct irq_cfg {
9338ad6f
DS		 166 cpumask_var_t domain;
167 cpumask_var_t old_domain;
5f0052f9 168 unsigned int dest_apicid;
9338ad6f
DS		 169 u8 vector;
170 u8 move_in_progress : 1;
d3f13810 171#ifdef CONFIG_IRQ_REMAP
9b1b0e42 172 u8 remapped : 1;
819508d3
JR		 173 union {
174 struct irq_2_iommu irq_2_iommu;
175 struct irq_2_irte irq_2_irte;
176 };
423f0859 177#endif
26011eee
JL		 178 union {
179#ifdef CONFIG_X86_IO_APIC
180 struct {
181 struct list_head irq_2_pin;
182 };
183#endif
184 };
9338ad6f
DS		 185};
186
b5dc8e6c
JL		 187extern struct irq_domain *x86_vector_domain;
188
189extern void init_irq_alloc_info(struct irq_alloc_info *info,
190 const struct cpumask *mask);
191extern void copy_irq_alloc_info(struct irq_alloc_info *dst,
192 struct irq_alloc_info *src);
55a0e2b1
JL		 193extern struct irq_cfg *irq_cfg(unsigned int irq);
194extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
74afab7a
JL		 195extern struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node);
196extern void lock_vector_lock(void);
197extern void unlock_vector_lock(void);
9338ad6f 198extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
74afab7a
JL		 199extern void clear_irq_vector(int irq, struct irq_cfg *cfg);
200extern void setup_vector_irq(int cpu);
e32c67e0 201#ifdef CONFIG_SMP
9338ad6f 202extern void send_cleanup_vector(struct irq_cfg *);
f0e5bf75 203extern void irq_complete_move(struct irq_cfg *cfg);
e32c67e0
JL		 204#else
205static inline void send_cleanup_vector(struct irq_cfg *c) { }
f0e5bf75 206static inline void irq_complete_move(struct irq_cfg *c) { }
e32c67e0 207#endif
7ec13187 208
74afab7a
JL		 209extern int apic_retrigger_irq(struct irq_data *data);
210extern void apic_ack_edge(struct irq_data *data);
211extern int apic_set_affinity(struct irq_data *data, const struct cpumask *mask,
212 unsigned int *dest_id);
213#else /* CONFIG_X86_LOCAL_APIC */
26011eee
JL		 214static inline void lock_vector_lock(void) {}
215static inline void unlock_vector_lock(void) {}
74afab7a 216#endif /* CONFIG_X86_LOCAL_APIC */
26011eee 217
52f518a3
JL		 218#ifdef CONFIG_PCI_MSI
219extern void arch_init_msi_domain(struct irq_domain *domain);
220#else
221static inline void arch_init_msi_domain(struct irq_domain *domain) { }
222#endif
223
2e088436
TG		 224/* Statistics */
225extern atomic_t irq_err_count;
226extern atomic_t irq_mis_count;
227
1a331957
TG		 228/* EISA */
229extern void eisa_set_level_irq(unsigned int irq);
230
2b97df06 231/* SMP */
1d9090e2
AK		 232extern __visible void smp_apic_timer_interrupt(struct pt_regs *);
233extern __visible void smp_spurious_interrupt(struct pt_regs *);
234extern __visible void smp_x86_platform_ipi(struct pt_regs *);
235extern __visible void smp_error_interrupt(struct pt_regs *);
2c1b284e
JSR		 236#ifdef CONFIG_X86_IO_APIC
237extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
238#endif
3e5095d1 239#ifdef CONFIG_SMP
1d9090e2
AK		 240extern __visible void smp_reschedule_interrupt(struct pt_regs *);
241extern __visible void smp_call_function_interrupt(struct pt_regs *);
242extern __visible void smp_call_function_single_interrupt(struct pt_regs *);
243extern __visible void smp_invalidate_interrupt(struct pt_regs *);
e7f08dfd 244#endif
2b97df06 245
3304c9c3 246extern char irq_entries_start[];
25c74b10 247#ifdef CONFIG_TRACING
3304c9c3 248#define trace_irq_entries_start irq_entries_start
25c74b10 249#endif
497c9a19 250
79a51b25
PB		 251#define VECTOR_UNDEFINED (-1)
252#define VECTOR_RETRIGGERED (-2)
9345005f 253
22dc12d1
TG		 254typedef int vector_irq_t[NR_VECTORS];
255DECLARE_PER_CPU(vector_irq_t, vector_irq);
2e088436 256
22dc12d1
TG		 257#endif /* !ASSEMBLY_ */
258
1965aae3 259#endif /* _ASM_X86_HW_IRQ_H */
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