函数逻辑报告 |
Source Code:arch\x86\kernel\apic\io_apic.c |
Create Date:2022-07-27 09:30:24 |
Last Modify:2020-03-16 21:24:45 | Copyright©Brick |
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函数名称:mp_irqdomain_alloc
函数原型:int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq, unsigned int nr_irqs, void *arg)
返回类型:int
参数:
类型 | 参数 | 名称 |
---|---|---|
struct irq_domain * | domain | |
unsigned int | virq | |
unsigned int | nr_irqs | |
void * | arg |
2986 | irq_data等于q_domain_get_irq_data - Get irq_data associated with @virq and @domain*@domain: domain to match*@virq: IRQ number to get irq_data |
2990 | ioapic等于mp_irqdomain_ioapic_idx(domain) |
2991 | pin等于ioapic_pin |
2992 | 如果q_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大于0则返回:负EEXIST |
2999 | ioapic_entry等于entry |
3001 | 如果ret小于0则 |
3006 | 初始化链表头 |
3007 | 硬件中断号等于ioapic_pin |
3008 | 中断控制器信息等于如果parent恒等于x86_vector_domain则ioapic_chip否则ioapic_ir_chip |
3010 | 和中断控制器相关的私有数据等于data |
3011 | mp_irqdomain_get_attr(mp_pin_to_gsi(ioapic, pin), data, info) |
3014 | add_pin_to_irq_node(data, ioapic_alloc_attr_node(info), ioapic, pin) |
3016 | local_irq_save(flags) |
3017 | 如果ioapic_entry则mp_setup_entry(cfg, data, ioapic_entry) |
3019 | mp_register_handler(virq, trigger) |
3020 | 如果virq小于nr_legacy_irqs()则mask(virq) |
3022 | local_irq_restore(flags) |
3024 | Define the default level of output to be very little* This can be turned up by using apic=verbose for more* information and apic=debug for _lots_ of information.* apic_verbosity is defined in apic.c(APIC_VERBOSE, debug-level messages "IOAPIC[%d]: Set routing entry (%d-%d -> 0x%x -> IRQ %d Mode:%i Active:%i Dest:%d)\n", ioapic, mpc_ioapic_id(ioapic), pin, vector, virq, trigger, polarity, dest_apicid) |
3029 | 返回:0 |
源代码转换工具 开放的插件接口 | X |
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