函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\irq\irqdomain.c Create Date:2022-07-27 11:14:28
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：q_domain_get_irq_data - Get irq_data associated with @virq and @domain*@domain: domain to match*@virq: IRQ number to get irq_data

函数原型：struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain, unsigned int virq)

返回类型：struct irq_data

参数：

类型参数名称
struct irq_domain *domain
unsigned intvirq
1705  irq_data等于irq_get_irq_data(virq)
1707  返回:(irq_data && 硬件中断对象 == domain) ? irq_data : NULL
调用者
名称描述
x86_vector_free_irqs
x86_vector_alloc_irqs
alloc_isa_irq_from_domainNeed special handling for ISA IRQs because there may be multiple IOAPIC pins* sharing the same ISA IRQ number and irqdomain only supports 1:1 mapping* between IOAPIC pin and IRQ number. A typical IOAPIC has 24 pins, pin 0-15 are
mp_irqdomain_alloc
mp_irqdomain_free
irq_map_generic_chipq_map_generic_chip - Map a generic chip for an irq domain
irq_unmap_generic_chip
irq_find_mappingq_find_mapping() - Find a linux irq from a hw irq number.*@domain: domain owning this hardware interrupt*@hwirq: hardware irq number in that domain space