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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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18
kernel/smp/ipi.h
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@ -6,10 +6,9 @@
#error "error type of arch!"
#endif
/**
* @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
@ -22,3 +21,18 @@
*/
extern 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);
/**
* @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
*/
extern 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);

23
kernel/smp/smp.c
View File

@ -7,8 +7,12 @@
#include "../process/process.h"
#include "../process/spinlock.h"
#include <sched/sched.h>
#include "ipi.h"
void ipi_0xc8_handler(uint64_t irq_num, uint64_t param, struct pt_regs *regs); // 由BSP转发的HPET中断处理函数
static spinlock_t multi_core_starting_lock; // 多核启动锁
static struct acpi_Processor_Local_APIC_Structure_t *proc_local_apic_structs[MAX_SUPPORTED_PROCESSOR_NUM];
@ -37,6 +41,9 @@ void smp_init()
set_intr_gate(i, 0, SMP_interrupt_table[i - 200]);
memset((void *)SMP_IPI_desc, 0, sizeof(irq_desc_t) * SMP_IRQ_NUM);
// 注册接收bsp处理器的hpet中断转发的处理函数
ipi_regiserIPI(0xc8, NULL, &ipi_0xc8_handler, NULL, NULL, "IPI 0xc8");
ipi_send_IPI(DEST_PHYSICAL, IDLE, ICR_LEVEL_DE_ASSERT, EDGE_TRIGGER, 0x00, ICR_INIT, ICR_ALL_EXCLUDE_Self, true, 0x00);
@ -130,13 +137,13 @@ void smp_ap_start()
current_pcb->priority = 2;
current_pcb->virtual_runtime = 0;
current_pcb->thread = (struct thread_struct *)(current_pcb + 1); // 将线程结构体放置在pcb后方
current_pcb->thread = (struct thread_struct *)(current_pcb + 1); // 将线程结构体放置在pcb后方
current_pcb->thread->rbp = _stack_start;
current_pcb->thread->rsp = _stack_start;
current_pcb->thread->fs = KERNEL_DS;
current_pcb->thread->gs = KERNEL_DS;
current_pcb->cpu_id = current_starting_cpu;
initial_proc[proc_current_cpu_id] = current_pcb;
load_TR(10 + current_starting_cpu * 2);
@ -145,13 +152,19 @@ void smp_ap_start()
spin_unlock(&multi_core_starting_lock);
current_pcb->preempt_count = 0;
sti();
if(proc_current_cpu_id == 1)
if (proc_current_cpu_id == 1)
process_init();
while(1)
while (1)
{
printk_color(BLACK, WHITE, "CPU:%d IDLE process.\n", proc_current_cpu_id);
}
while (1) // 这里要循环hlt，原因是当收到中断后，核心会被唤醒，处理完中断之后不会自动hlt
hlt();
}
// 由BSP转发的HPET中断处理函数
void ipi_0xc8_handler(uint64_t irq_num, uint64_t param, struct pt_regs *regs)
{
sched_update_jiffies();
}