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Code Issues Releases Wiki Activity

new: 为ipi添加xapic支持

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This commit is contained in:
fslongjin
2022-09-01 17:40:11 +08:00
parent 588603a10a
commit dffa51b1ef
7 changed files with 140 additions and 179 deletions
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15
kernel/arch/x86_64/x86_64_ipi.c
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@ -1,7 +1,8 @@
#include "x86_64_ipi.h"
#include <driver/interrupt/apic/apic.h>
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, uint32_t destination)
{
struct INT_CMD_REG icr_entry;
icr_entry.dest_mode = dest_mode;
@ -18,7 +19,7 @@ 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 (CURRENT_APIC_STATE == APIC_X2APIC_ENABLED) // x2APIC
{
icr_entry.destination.x2apic_destination = destination;
wrmsr(0x830, *(unsigned long *)&icr_entry); // 发送ipi
@ -29,17 +30,17 @@ void ipi_send_IPI(uint32_t dest_mode, uint32_t deliver_status, uint32_t level, u
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) & 0xffffffff);
*(uint32_t *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + 0x300) = (uint32_t)((*(ul *)&icr_entry) & 0xffffffff);
}
}
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)
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
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;

3
kernel/arch/x86_64/x86_64_ipi.h
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@ -24,11 +24,10 @@
* @param vector 中断向量
* @param deliver_mode 投递模式
* @param dest_shorthand 投递目标速记值
* @param apic_type apic的类型 （0:xapic 1: x2apic）
* @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, uint32_t destination);
/**
* @brief ipi中断处理注册函数