| | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| | 2 | #ifndef _ASM_X86_HW_IRQ_H |
| | 3 | #define _ASM_X86_HW_IRQ_H |
| | 4 | |
| | 5 | /* |
| | 6 | * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar |
| | 7 | * |
| | 8 | * moved some of the old arch/i386/kernel/irq.h to here. VY |
| | 9 | * |
| | 10 | * IRQ/IPI changes taken from work by Thomas Radke |
| | 11 | * <tomsoft@informatik.tu-chemnitz.de> |
| | 12 | * |
| | 13 | * hacked by Andi Kleen for x86-64. |
| | 14 | * unified by tglx |
| | 15 | */ |
| | 16 | |
| | 17 | #include <asm/irq_vectors.h> |
| | 18 | |
| | 19 | #ifndef __ASSEMBLER__ |
| | 20 | |
| | 21 | #include <linux/percpu.h> |
| | 22 | #include <linux/profile.h> |
| | 23 | #include <linux/smp.h> |
| | 24 | |
| | 25 | #include <linux/atomic.h> |
| | 26 | #include <asm/irq.h> |
| | 27 | #include <asm/sections.h> |
| | 28 | |
| | 29 | #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY |
| | 30 | struct irq_data; |
| | 31 | struct pci_dev; |
| | 32 | struct msi_desc; |
| | 33 | |
| | 34 | enum irq_alloc_type { |
| | 35 | X86_IRQ_ALLOC_TYPE_IOAPIC = 1, |
| | 36 | X86_IRQ_ALLOC_TYPE_HPET, |
| | 37 | X86_IRQ_ALLOC_TYPE_PCI_MSI, |
| | 38 | X86_IRQ_ALLOC_TYPE_PCI_MSIX, |
| | 39 | X86_IRQ_ALLOC_TYPE_DMAR, |
| | 40 | X86_IRQ_ALLOC_TYPE_AMDVI, |
| | 41 | X86_IRQ_ALLOC_TYPE_UV, |
| | 42 | }; |
| | 43 | |
| | 44 | struct ioapic_alloc_info { |
| | 45 | int pin; |
| | 46 | int node; |
| | 47 | u32 is_level : 1; |
| | 48 | u32 active_low : 1; |
| | 49 | u32 valid : 1; |
| | 50 | }; |
| | 51 | |
| | 52 | struct uv_alloc_info { |
| | 53 | int limit; |
| | 54 | int blade; |
| | 55 | unsigned long offset; |
| | 56 | char *name; |
| | 57 | |
| | 58 | }; |
| | 59 | |
| | 60 | /** |
| | 61 | * irq_alloc_info - X86 specific interrupt allocation info |
| | 62 | * @type: X86 specific allocation type |
| | 63 | * @flags: Flags for allocation tweaks |
| | 64 | * @devid: Device ID for allocations |
| | 65 | * @hwirq: Associated hw interrupt number in the domain |
| | 66 | * @mask: CPU mask for vector allocation |
| | 67 | * @desc: Pointer to msi descriptor |
| | 68 | * @data: Allocation specific data |
| | 69 | * |
| | 70 | * @ioapic: IOAPIC specific allocation data |
| | 71 | * @uv: UV specific allocation data |
| | 72 | */ |
| | 73 | struct irq_alloc_info { |
| | 74 | enum irq_alloc_type type; |
| | 75 | u32 flags; |
| | 76 | u32 devid; |
| | 77 | irq_hw_number_t hwirq; |
| | 78 | const struct cpumask *mask; |
| | 79 | struct msi_desc *desc; |
| | 80 | void *data; |
| | 81 | |
| | 82 | union { |
| | 83 | struct ioapic_alloc_info ioapic; |
| | 84 | struct uv_alloc_info uv; |
| | 85 | }; |
| | 86 | }; |
| | 87 | |
| | 88 | struct irq_cfg { |
| | 89 | unsigned int dest_apicid; |
| | 90 | unsigned int vector; |
| | 91 | }; |
| | 92 | |
| | 93 | extern struct irq_cfg *irq_cfg(unsigned int irq); |
| | 94 | extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); |
| | 95 | extern void lock_vector_lock(void); |
| | 96 | extern void unlock_vector_lock(void); |
| | 97 | #ifdef CONFIG_SMP |
| | 98 | extern void vector_schedule_cleanup(struct irq_cfg *); |
| | 99 | extern void irq_complete_move(struct irq_cfg *cfg); |
| | 100 | #else |
| | 101 | static inline void vector_schedule_cleanup(struct irq_cfg *c) { } |
| | 102 | static inline void irq_complete_move(struct irq_cfg *c) { } |
| | 103 | #endif |
| | 104 | |
| | 105 | extern void apic_ack_edge(struct irq_data *data); |
| | 106 | #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ |
| | 107 | static inline void lock_vector_lock(void) {} |
| | 108 | static inline void unlock_vector_lock(void) {} |
| | 109 | #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ |
| | 110 | |
| | 111 | /* Statistics */ |
| | 112 | extern atomic_t irq_err_count; |
| | 113 | extern atomic_t irq_mis_count; |
| | 114 | |
| | 115 | extern void elcr_set_level_irq(unsigned int irq); |
| | 116 | |
| | 117 | extern char irq_entries_start[]; |
| | 118 | #ifdef CONFIG_TRACING |
| | 119 | #define trace_irq_entries_start irq_entries_start |
| | 120 | #endif |
| | 121 | |
| | 122 | extern char spurious_entries_start[]; |
| | 123 | |
| | 124 | #define VECTOR_UNUSED NULL |
| | 125 | #define VECTOR_SHUTDOWN ((void *)-1L) |
| | 126 | #define VECTOR_RETRIGGERED ((void *)-2L) |
| | 127 | |
| | 128 | typedef struct irq_desc* vector_irq_t[NR_VECTORS]; |
| | 129 | DECLARE_PER_CPU(vector_irq_t, vector_irq); |
| | 130 | |
| | 131 | #endif /* !__ASSEMBLER__ */ |
| | 132 | |
| | 133 | #endif /* _ASM_X86_HW_IRQ_H */ |
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