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135 lines
3.0 KiB
135 lines
3.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_X86_HW_IRQ_H |
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#define _ASM_X86_HW_IRQ_H |
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/* |
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* (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar |
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* |
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* moved some of the old arch/i386/kernel/irq.h to here. VY |
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* |
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* IRQ/IPI changes taken from work by Thomas Radke |
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* <[email protected]> |
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* |
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* hacked by Andi Kleen for x86-64. |
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* unified by tglx |
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*/ |
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#include <asm/irq_vectors.h> |
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#define IRQ_MATRIX_BITS NR_VECTORS |
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#ifndef __ASSEMBLY__ |
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#include <linux/percpu.h> |
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#include <linux/profile.h> |
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#include <linux/smp.h> |
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#include <linux/atomic.h> |
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#include <asm/irq.h> |
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#include <asm/sections.h> |
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#ifdef CONFIG_X86_LOCAL_APIC |
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struct irq_data; |
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struct pci_dev; |
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struct msi_desc; |
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enum irq_alloc_type { |
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X86_IRQ_ALLOC_TYPE_IOAPIC = 1, |
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X86_IRQ_ALLOC_TYPE_HPET, |
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X86_IRQ_ALLOC_TYPE_PCI_MSI, |
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X86_IRQ_ALLOC_TYPE_PCI_MSIX, |
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X86_IRQ_ALLOC_TYPE_DMAR, |
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X86_IRQ_ALLOC_TYPE_AMDVI, |
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X86_IRQ_ALLOC_TYPE_UV, |
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}; |
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struct ioapic_alloc_info { |
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int pin; |
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int node; |
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u32 is_level : 1; |
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u32 active_low : 1; |
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u32 valid : 1; |
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}; |
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struct uv_alloc_info { |
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int limit; |
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int blade; |
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unsigned long offset; |
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char *name; |
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}; |
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/** |
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* irq_alloc_info - X86 specific interrupt allocation info |
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* @type: X86 specific allocation type |
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* @flags: Flags for allocation tweaks |
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* @devid: Device ID for allocations |
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* @hwirq: Associated hw interrupt number in the domain |
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* @mask: CPU mask for vector allocation |
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* @desc: Pointer to msi descriptor |
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* @data: Allocation specific data |
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* |
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* @ioapic: IOAPIC specific allocation data |
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* @uv: UV specific allocation data |
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*/ |
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struct irq_alloc_info { |
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enum irq_alloc_type type; |
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u32 flags; |
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u32 devid; |
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irq_hw_number_t hwirq; |
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const struct cpumask *mask; |
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struct msi_desc *desc; |
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void *data; |
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union { |
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struct ioapic_alloc_info ioapic; |
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struct uv_alloc_info uv; |
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}; |
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}; |
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struct irq_cfg { |
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unsigned int dest_apicid; |
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unsigned int vector; |
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}; |
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extern struct irq_cfg *irq_cfg(unsigned int irq); |
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extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); |
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extern void lock_vector_lock(void); |
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extern void unlock_vector_lock(void); |
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#ifdef CONFIG_SMP |
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extern void send_cleanup_vector(struct irq_cfg *); |
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extern void irq_complete_move(struct irq_cfg *cfg); |
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#else |
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static inline void send_cleanup_vector(struct irq_cfg *c) { } |
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static inline void irq_complete_move(struct irq_cfg *c) { } |
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#endif |
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extern void apic_ack_edge(struct irq_data *data); |
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#else /* CONFIG_X86_LOCAL_APIC */ |
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static inline void lock_vector_lock(void) {} |
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static inline void unlock_vector_lock(void) {} |
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#endif /* CONFIG_X86_LOCAL_APIC */ |
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/* Statistics */ |
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extern atomic_t irq_err_count; |
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extern atomic_t irq_mis_count; |
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extern void elcr_set_level_irq(unsigned int irq); |
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extern char irq_entries_start[]; |
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#ifdef CONFIG_TRACING |
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#define trace_irq_entries_start irq_entries_start |
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#endif |
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extern char spurious_entries_start[]; |
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#define VECTOR_UNUSED NULL |
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#define VECTOR_SHUTDOWN ((void *)-1L) |
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#define VECTOR_RETRIGGERED ((void *)-2L) |
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typedef struct irq_desc* vector_irq_t[NR_VECTORS]; |
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DECLARE_PER_CPU(vector_irq_t, vector_irq); |
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#endif /* !ASSEMBLY_ */ |
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#endif /* _ASM_X86_HW_IRQ_H */
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