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测试IPI

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This commit is contained in:
fslongjin
2022-04-07 20:21:28 +08:00
parent ac2508224e
commit 279de4c7f9
14 changed files with 265 additions and 81 deletions
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83
kernel/driver/interrupt/apic/apic.c
View File

@ -389,7 +389,9 @@ void apic_local_apic_init()
*/
void apic_init()
{
// 初始化中断门， 中断使用第二个ist
for (int i = 32; i <= 55; ++i)
set_intr_gate(i, 2, interrupt_table[i - 32]);
// 初始化主芯片
io_out8(0x20, 0x11); // 初始化主芯片的icw1
io_out8(0x21, 0x20); // 设置主芯片的中断向量号为0x20(0x20-0x27)
@ -401,17 +403,15 @@ void apic_init()
io_out8(0xa1, 0x28); // 设置从芯片的中断向量号为0x28(0x28-0x2f)
io_out8(0xa1, 0x02); // 设置从芯片连接到主芯片的int2
io_out8(0xa1, 0x01);
// 屏蔽类8259A芯片
io_mfence();
io_out8(0xa1, 0xff);
// 屏蔽类8259A芯片
io_mfence();
io_out8(0x21, 0xff);
io_mfence();
io_out8(0xa1, 0xff);
io_mfence();
kdebug("8259A Masked.");
// 初始化中断门， 中断使用第二个ist
for (int i = 32; i <= 55; ++i)
set_intr_gate(i, 2, interrupt_table[i - 32]);
// enable IMCR
io_out8(0x22, 0x70);
@ -420,10 +420,8 @@ void apic_init()
apic_local_apic_init();
apic_io_apic_init();
kdebug("vvvvv");
sti();
kdebug("qqqqq");
}
/**
* @brief 中断服务程序
@ -433,28 +431,40 @@ void apic_init()
*/
void do_IRQ(struct pt_regs *rsp, ul number)
{
unsigned char x = io_in8(0x60);
irq_desc_t *irq = &interrupt_desc[number - 32];
// 执行中断上半部处理程序
if (irq->handler != NULL)
irq->handler(number, irq->parameter, rsp);
else
kwarn("Intr vector [%d] does not have a handler!");
// 向中断控制器发送应答消息
if (irq->controller != NULL && irq->controller->ack != NULL)
irq->controller->ack(number);
else
switch (number & 0x80) // 以0x80为界限，低于0x80的是外部中断控制器，高于0x80的是Local APIC
{
case 0x00: // 外部中断控制器
/* code */
{
irq_desc_t *irq = &interrupt_desc[number - 32];
// 向EOI寄存器写入0x00表示结束中断
__asm__ __volatile__("movq $0x00, %%rdx \n\t"
"movq $0x00, %%rax \n\t"
"movq $0x80b, %%rcx \n\t"
"wrmsr \n\t" ::
: "memory");
// 执行中断上半部处理程序
if (irq->handler != NULL)
irq->handler(number, irq->parameter, rsp);
else
kwarn("Intr vector [%d] does not have a handler!");
// 向中断控制器发送应答消息
if (irq->controller != NULL && irq->controller->ack != NULL)
irq->controller->ack(number);
else
{
// 向EOI寄存器写入0x00表示结束中断
__asm__ __volatile__("movq $0x00, %%rdx \n\t"
"movq $0x00, %%rax \n\t"
"movq $0x80b, %%rcx \n\t"
"wrmsr \n\t" ::
: "memory");
}
}
break;
case 0x80:
printk_color(RED, BLACK, "SMP IPI [ %d ]\n", number);
apic_local_apic_edge_ack(number);
default:
kwarn("do IRQ receive: %d", number);
break;
}
}
@ -571,6 +581,21 @@ void apic_ioapic_edge_ack(ul irq_num) // 边沿触发
: "memory");
}
/**
* @brief local apic 边沿触发应答
*
* @param irq_num
*/
void apic_local_apic_edge_ack(ul irq_num)
{
// 向EOI寄存器写入0x00表示结束中断
__asm__ __volatile__("movq $0x00, %%rdx \n\t"
"movq $0x00, %%rax \n\t"
"movq $0x80b, %%rcx \n\t"
"wrmsr \n\t" ::
: "memory");
}
/**
* @brief 读取指定类型的 Interrupt Control Structure
*

7
kernel/driver/interrupt/apic/apic.h
View File

@ -297,5 +297,8 @@ void apic_ioapic_enable(ul irq_num);
void apic_ioapic_disable(ul irq_num);
ul apic_ioapic_install(ul irq_num, void *arg);
void apic_ioapic_uninstall(ul irq_num);
void apic_ioapic_level_ack(ul irq_num); // 电平触发
void apic_ioapic_edge_ack(ul irq_num); // 边沿触发
void apic_ioapic_level_ack(ul irq_num); // ioapic电平触发 应答
void apic_ioapic_edge_ack(ul irq_num); // ioapic边沿触发 应答
// void apic_local_apic_level_ack(ul irq_num);// local apic电平触发 应答
void apic_local_apic_edge_ack(ul irq_num);// local apic边沿触发 应答