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Code Issues Releases Wiki Activity

完善ipi通信机制

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This commit is contained in:
fslongjin
2022-04-14 16:53:01 +08:00
parent ddbfb822c4
commit 777932704d
8 changed files with 106 additions and 46 deletions
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21
kernel/arch/x86_64/x86_64_ipi.c
View File

@ -18,20 +18,31 @@ void ipi_send_IPI(uint32_t dest_mode, uint32_t deliver_status, uint32_t level, u
// x2APIC下，ICR寄存器地址为0x830
// xAPIC下则为0xfee00300(31-0) 0xfee00310 (63-32)
if (apic_type) // x2APIC
if (apic_type) // x2APIC
{
icr_entry.destination.x2apic_destination = destination;
wrmsr(0x830, *(unsigned long *)&icr_entry); // 发送ipi
}
else // xAPIC
else // xAPIC
{
icr_entry.destination.apic_destination.dest_field = destination & 0xff;
icr_entry.destination.apic_destination.res_4 = 0;
// 先向高32bit写数据，然后再向低32bit写数据，不能调转
*(uint32_t*)(APIC_LOCAL_APIC_VIRT_BASE_ADDR+0x310) = (uint32_t)(((*(ul*)&icr_entry)>>32)&0xffff);
*(uint32_t*)(APIC_LOCAL_APIC_VIRT_BASE_ADDR+0x300) = (uint32_t)((*(ul*)&icr_entry)&0xffff);
*(uint32_t *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + 0x310) = (uint32_t)(((*(ul *)&icr_entry) >> 32) & 0xffff);
*(uint32_t *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + 0x300) = (uint32_t)((*(ul *)&icr_entry) & 0xffff);
}
}
int ipi_regiserIPI(uint64_t irq_num, void *arg,
void (*handler)(uint64_t irq_num, uint64_t param, struct pt_regs *regs),
uint64_t param, hardware_intr_controller *controller, char *irq_name)
{
irq_desc_t *p = &SMP_IPI_desc[irq_num-200];
p->controller = NULL; // 由于ipi不涉及到具体的硬件操作，因此不需要controller
p->irq_name = irq_name;
p->parameter = param;
p->flags = 0;
p->handler = handler;
return 0;
}

23
kernel/arch/x86_64/x86_64_ipi.h
View File

@ -4,9 +4,9 @@
* @brief 多核通信驱动
* @version 0.1
* @date 2022-04-07
*
*
* @copyright Copyright (c) 2022
*
*
*/
#pragma once
@ -16,7 +16,7 @@
/**
* @brief 发送ipi消息
*
*
* @param dest_mode 目标模式
* @param deliver_status 投递模式
* @param level 信号驱动电平
@ -28,4 +28,19 @@
* @param destination 投递目标
*/
void ipi_send_IPI(uint32_t dest_mode, uint32_t deliver_status, uint32_t level, uint32_t trigger,
uint32_t vector, uint32_t deliver_mode, uint32_t dest_shorthand, bool apic_type,uint32_t destination);
uint32_t vector, uint32_t deliver_mode, uint32_t dest_shorthand, bool apic_type, uint32_t destination);
/**
* @brief ipi中断处理注册函数
*
* @param irq_num 中断向量号
* @param arg 参数
* @param handler 处理函数
* @param param 参数
* @param controller 当前为NULL
* @param irq_name ipi中断名
* @return int 成功：0
*/
int ipi_regiserIPI(uint64_t irq_num, void *arg,
void (*handler)(uint64_t irq_num, uint64_t param, struct pt_regs *regs),
uint64_t param, hardware_intr_controller *controller, char *irq_name);