Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\apic\io_apic.c Create Date:2022-07-28 08:29:21
Last Modify:2020-03-16 21:24:45 Copyright©Brick
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Name:io_apic_write

Proto:static void io_apic_write(unsigned int apic, unsigned int reg, unsigned int value)

Type:void

Parameter:

TypeParameterName
unsigned intapic
unsigned intreg
unsigned intvalue
296  __iomem * io_apic = io_apic_base(apic)
298  writel(reg, & index)
299  writel(value, & data)
Caller
NameDescribe
__ioapic_write_entryWhen we write a new IO APIC routing entry, we need to write the high* word first! If the mask bit in the low word is clear, we will enable* the interrupt, and we need to make sure the entry is fully populated* before that happens.
ioapic_mask_entryWhen we mask an IO APIC routing entry, we need to write the low* word first, in order to set the mask bit before we change the* high bits!
io_apic_modify_irq
setup_ioapic_ids_from_mpc_nocheck to set the IO-APIC physical IDs based on the* values stored in the MPC table.* by Matt Domsch Tue Dec 21 12:25:05 CST 1999
resume_ioapic_id
io_apic_get_unique_id