diff options
Diffstat (limited to 'arch/x86/include/asm/hw_irq.h')
| -rw-r--r-- | arch/x86/include/asm/hw_irq.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h new file mode 100644 index 000000000..d465ece58 --- /dev/null +++ b/arch/x86/include/asm/hw_irq.h @@ -0,0 +1,135 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_HW_IRQ_H +#define _ASM_X86_HW_IRQ_H + +/* + * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar + * + * moved some of the old arch/i386/kernel/irq.h to here. VY + * + * IRQ/IPI changes taken from work by Thomas Radke + * <tomsoft@informatik.tu-chemnitz.de> + * + * hacked by Andi Kleen for x86-64. + * unified by tglx + */ + +#include <asm/irq_vectors.h> + +#define IRQ_MATRIX_BITS NR_VECTORS + +#ifndef __ASSEMBLY__ + +#include <linux/percpu.h> +#include <linux/profile.h> +#include <linux/smp.h> + +#include <linux/atomic.h> +#include <asm/irq.h> +#include <asm/sections.h> + +#ifdef CONFIG_X86_LOCAL_APIC +struct irq_data; +struct pci_dev; +struct msi_desc; + +enum irq_alloc_type { + X86_IRQ_ALLOC_TYPE_IOAPIC = 1, + X86_IRQ_ALLOC_TYPE_HPET, + X86_IRQ_ALLOC_TYPE_PCI_MSI, + X86_IRQ_ALLOC_TYPE_PCI_MSIX, + X86_IRQ_ALLOC_TYPE_DMAR, + X86_IRQ_ALLOC_TYPE_AMDVI, + X86_IRQ_ALLOC_TYPE_UV, +}; + +struct ioapic_alloc_info { + int pin; + int node; + u32 is_level : 1; + u32 active_low : 1; + u32 valid : 1; +}; + +struct uv_alloc_info { + int limit; + int blade; + unsigned long offset; + char *name; + +}; + +/** + * irq_alloc_info - X86 specific interrupt allocation info + * @type: X86 specific allocation type + * @flags: Flags for allocation tweaks + * @devid: Device ID for allocations + * @hwirq: Associated hw interrupt number in the domain + * @mask: CPU mask for vector allocation + * @desc: Pointer to msi descriptor + * @data: Allocation specific data + * + * @ioapic: IOAPIC specific allocation data + * @uv: UV specific allocation data +*/ +struct irq_alloc_info { + enum irq_alloc_type type; + u32 flags; + u32 devid; + irq_hw_number_t hwirq; + const struct cpumask *mask; + struct msi_desc *desc; + void *data; + + union { + struct ioapic_alloc_info ioapic; + struct uv_alloc_info uv; + }; +}; + +struct irq_cfg { + unsigned int dest_apicid; + unsigned int vector; +}; + +extern struct irq_cfg *irq_cfg(unsigned int irq); +extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); +extern void lock_vector_lock(void); +extern void unlock_vector_lock(void); +#ifdef CONFIG_SMP +extern void send_cleanup_vector(struct irq_cfg *); +extern void irq_complete_move(struct irq_cfg *cfg); +#else +static inline void send_cleanup_vector(struct irq_cfg *c) { } +static inline void irq_complete_move(struct irq_cfg *c) { } +#endif + +extern void apic_ack_edge(struct irq_data *data); +#else /* CONFIG_X86_LOCAL_APIC */ +static inline void lock_vector_lock(void) {} +static inline void unlock_vector_lock(void) {} +#endif /* CONFIG_X86_LOCAL_APIC */ + +/* Statistics */ +extern atomic_t irq_err_count; +extern atomic_t irq_mis_count; + +extern void elcr_set_level_irq(unsigned int irq); + +extern char irq_entries_start[]; +#ifdef CONFIG_TRACING +#define trace_irq_entries_start irq_entries_start +#endif + +extern char spurious_entries_start[]; + +#define VECTOR_UNUSED NULL +#define VECTOR_SHUTDOWN ((void *)-1L) +#define VECTOR_RETRIGGERED ((void *)-2L) + +typedef struct irq_desc* vector_irq_t[NR_VECTORS]; +DECLARE_PER_CPU(vector_irq_t, vector_irq); + +#endif /* !ASSEMBLY_ */ + +#endif /* _ASM_X86_HW_IRQ_H */ |