函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\apic\apic.c Create Date:2022-07-27 09:26:44
Last Modify:2020-03-16 21:21:31 Copyright©Brick
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函数名称：lear_local_APIC - shutdown the local APIC* This is called, when a CPU is disabled and before rebooting, so the state of* the local APIC has no dangling leftovers. Also used to cleanout any BIOS* leftovers during boot.

函数原型：void clear_local_APIC(void)

返回类型：void

参数：无

1173  如果非x2apic_mode且非apic_phys则返回
1176  maxlvt等于lapic_get_maxlvt - get the maximum number of local vector table entries
1181  如果maxlvt大于等于3则
1182  v等于ERROR_APIC_VECTOR
1183  apic_write(APIC_LVTERR, v | APIC_LVT_MASKED)
1189  v等于apic_read(APIC_LVTT)
1190  apic_write(APIC_LVTT, v | APIC_LVT_MASKED)
1191  v等于apic_read(APIC_LVT0)
1192  apic_write(APIC_LVT0, v | APIC_LVT_MASKED)
1193  v等于apic_read(APIC_LVT1)
1194  apic_write(APIC_LVT1, v | APIC_LVT_MASKED)
1195  如果maxlvt大于等于4则
1196  v等于apic_read(APIC_LVTPC)
1197  apic_write(APIC_LVTPC, v | APIC_LVT_MASKED)
1218  apic_write(APIC_LVTT, APIC_LVT_MASKED)
1219  apic_write(APIC_LVT0, APIC_LVT_MASKED)
1220  apic_write(APIC_LVT1, APIC_LVT_MASKED)
1221  如果maxlvt大于等于3则apic_write(APIC_LVTERR, APIC_LVT_MASKED)
1223  如果maxlvt大于等于4则apic_write(APIC_LVTPC, APIC_LVT_MASKED)
1227  如果Check, if the APIC is integrated or a separate chip则
1228  如果maxlvt大于3则apic_write(APIC_ESR, 0)
1231  apic_read(APIC_ESR)
调用者
名称描述
apic_soft_disableapic_soft_disable - Clears and software disables the local APIC on hotplug* Contrary to disable_local_APIC() this does not touch the enable bit in* MSR_IA32_APICBASE
lapic_shutdownIf Linux enabled the LAPIC against the BIOS default disable it down before* re-entering the BIOS on shutdown. Otherwise the BIOS may get confused and* not power-off. Additionally clear all LVT entries before disable_local_APIC
init_bsp_APICAn initial setup of the virtual wire mode.
connect_bsp_APICect_bsp_APIC - attach the APIC to the interrupt system