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🐛 解决了在支持acpi2.0的bios上，无法获取rsdt的问题（目前没有使用xsdt）
This commit is contained in:
fslongjin
parent
8272257757
commit
75eea551e6
@ -4,21 +4,25 @@
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#include "../multiboot2/multiboot2.h"
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#include "../../mm/mm.h"
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// 获取RSDT entry的虚拟地址
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#define acpi_get_RSDT_entry_vaddr(phys_addr) (ACPI_DESCRIPTION_HEDERS_BASE + (phys_addr)-acpi_RSDT_entry_phys_base)
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#define acpi_get_RSDT_entry_vaddr(phys_addr) (ACPI_DESCRIPTION_HEDERS_BASE + (phys_addr)-acpi_RSDT_entry_phys_base) // 获取RSDT entry的虚拟地址
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// #define acpi_get_XSDT_entry_vaddr(phys_addr) (ACPI_DESCRIPTION_HEDERS_BASE + (phys_addr)-acpi_XSDT_entry_phys_base) // 获取XSDT entry的虚拟地址
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static struct acpi_RSDP_t *rsdpv1;
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static struct acpi_RSDP_2_t *rsdpv2;
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static struct acpi_RSDT_Structure_t *rsdt;
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static struct acpi_XSDT_Structure_t *xsdt;
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static struct multiboot_tag_old_acpi_t old_acpi;
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static struct multiboot_tag_new_acpi_t new_acpi;
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static ul acpi_RSDT_offset = 0;
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static ul acpi_XSDT_offset = 0;
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static uint acpi_RSDT_Entry_num = 0;
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static uint acpi_XSDT_Entry_num = 0;
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// RSDT中的第一个entry所在物理页的基地址
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static ul acpi_RSDT_entry_phys_base = 0;
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static ul acpi_RSDT_entry_phys_base = 0; // RSDT中的第一个entry所在物理页的基地址
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// static ul acpi_XSDT_entry_phys_base = 0; // XSDT中的第一个entry所在物理页的基地址
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/**
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* @brief 迭代器，用于迭代描述符头（位于ACPI标准文件的Table 5-29）
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@ -30,17 +34,30 @@ void acpi_iter_SDT(bool (*_fun)(const struct acpi_system_description_table_heade
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{
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struct acpi_system_description_table_header_t *sdt_header;
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uint *ent = &(rsdt->Entry);
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for (int i = 0; i < acpi_RSDT_Entry_num; ++i)
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if (acpi_use_xsdt)
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{
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ul *ent = &(xsdt->Entry);
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for (int i = 0; i < acpi_XSDT_Entry_num; ++i)
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{
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mm_map_phys_addr(ACPI_XSDT_DESCRIPTION_HEDERS_BASE + PAGE_2M_SIZE * i, (*(ent + i)) & PAGE_2M_MASK, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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sdt_header = (struct acpi_system_description_table_header_t *)((ul)(ACPI_XSDT_DESCRIPTION_HEDERS_BASE + PAGE_2M_SIZE * i));
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sdt_header = (struct acpi_system_description_table_header_t *)(acpi_get_RSDT_entry_vaddr((ul)(*(ent + i))));
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kwarn("vvv=%#018lx", (ul)(*(ent + i)));
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kwarn("vaddr=%#018lx", (ul)acpi_get_RSDT_entry_vaddr((ul)(*(ent + i))));
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printk_color(ORANGE, BLACK,"kkl=%s\n", sdt_header->Signature);
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if (_fun(sdt_header, _data) == true)
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return;
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}
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}
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else
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{
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uint *ent = &(rsdt->Entry);
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for (int i = 0; i < acpi_RSDT_Entry_num; ++i)
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{
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if (_fun(sdt_header, _data) == true)
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return;
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sdt_header = (struct acpi_system_description_table_header_t *)(acpi_get_RSDT_entry_vaddr((ul)(*(ent + i))));
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if (_fun(sdt_header, _data) == true)
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return;
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}
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}
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return;
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@ -61,9 +78,7 @@ bool acpi_get_MADT(const struct acpi_system_description_table_header_t *_iter_da
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return false;
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//*(struct acpi_Multiple_APIC_Description_Table_t *)_data = *(struct acpi_Multiple_APIC_Description_Table_t *)_iter_data;
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// 返回MADT的虚拟地址
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*(ul *)_data = (ul)_iter_data;
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printk_color(ORANGE, BLACK,"xxx=%#018lx\n", (ul)_iter_data);
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return true;
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}
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@ -82,42 +97,105 @@ void acpi_init()
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int reserved;
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multiboot2_iter(multiboot2_get_acpi_old_RSDP, &old_acpi, &reserved);
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*rsdpv1 = (old_acpi.rsdp);
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rsdpv1 = &(old_acpi.rsdp);
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kdebug("RSDT_phys_Address=%#018lx", rsdpv1->RsdtAddress);
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kdebug("RSDP_Revision=%d", rsdpv1->Revision);
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// 映射RSDT的物理地址到页表
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// 暂定字节数为2MB
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// 由于页表映射的原因，需要清除低21位地址，才能填入页表
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ul rsdt_phys_base = rsdpv1->RsdtAddress & PAGE_2M_MASK;
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acpi_RSDT_offset = rsdpv1->RsdtAddress - rsdt_phys_base;
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mm_map_phys_addr(ACPI_RSDT_VIRT_ADDR_BASE, rsdt_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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kdebug("RSDT mapped!");
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multiboot2_iter(multiboot2_get_acpi_new_RSDP, &new_acpi, &reserved);
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*rsdpv2 = new_acpi.rsdp;
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rsdpv2 = &(new_acpi.rsdp);
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kdebug("Rsdt_v2_phys_Address=%#018lx", rsdpv2->rsdp1.RsdtAddress);
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kdebug("Xsdt_phys_Address=%#018lx", rsdpv2->XsdtAddress);
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kdebug("RSDP_v2_Revision=%d", rsdpv2->rsdp1.Revision);
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rsdt = (struct acpi_RSDT_Structure_t *)(ACPI_RSDT_VIRT_ADDR_BASE + acpi_RSDT_offset);
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// An ACPI-compatible OS must use the XSDT if present
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if (rsdpv2->XsdtAddress != 0x00UL)
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{
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/*
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acpi_use_xsdt = true;
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ul xsdt_phys_base = rsdpv2->XsdtAddress & PAGE_2M_MASK;
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acpi_XSDT_offset = rsdpv2->XsdtAddress - xsdt_phys_base;
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mm_map_phys_addr(ACPI_XSDT_VIRT_ADDR_BASE, xsdt_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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kdebug("XSDT mapped!");
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// 计算RSDT Entry的数量
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kdebug("offset=%d", sizeof(rsdt->header));
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acpi_RSDT_Entry_num = (rsdt->header.Length - 36) / 4;
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xsdt = (struct acpi_XSDT_Structure_t *)(ACPI_XSDT_VIRT_ADDR_BASE + acpi_XSDT_offset);
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// 计算RSDT Entry的数量
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kdebug("offset=%d", sizeof(xsdt->header));
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kdebug("xsdt sign=%s", xsdt->header.Signature);
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acpi_XSDT_Entry_num = (xsdt->header.Length - sizeof(xsdt->header)) / 8;
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printk_color(ORANGE, BLACK, "RSDT Length=%dbytes.\n", rsdt->header.Length);
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printk_color(ORANGE, BLACK, "RSDT Entry num=%d\n", acpi_RSDT_Entry_num);
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printk_color(ORANGE, BLACK, "XSDT Length=%dbytes.\n", xsdt->header.Length);
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printk_color(ORANGE, BLACK, "XSDT Entry num=%d\n", acpi_XSDT_Entry_num);
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mm_map_phys_addr(ACPI_RSDT_VIRT_ADDR_BASE, rsdt_phys_base, rsdt->header.Length + PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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// 映射所有的Entry的物理地址
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acpi_RSDT_entry_phys_base = ((ul)(rsdt->Entry)) & PAGE_2M_MASK;
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// 由于地址只是32bit的，并且存在脏数据，这里需要手动清除高32bit，否则会触发#GP
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acpi_RSDT_entry_phys_base = MASK_HIGH_32bit(acpi_RSDT_entry_phys_base);
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mm_map_phys_addr(ACPI_XSDT_VIRT_ADDR_BASE, xsdt_phys_base, xsdt->header.Length + PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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// 映射所有的Entry的物理地址
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ul *ent = &(xsdt->Entry);
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for (int j = 0; j < acpi_XSDT_Entry_num; ++j)
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{
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kdebug("entry=%#018lx, virt=%#018lx", (*(ent + j)) & PAGE_2M_MASK, ACPI_XSDT_DESCRIPTION_HEDERS_BASE + PAGE_2M_SIZE * j);
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// 映射RSDT ENTRY的物理地址
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mm_map_phys_addr(ACPI_XSDT_DESCRIPTION_HEDERS_BASE + PAGE_2M_SIZE * j, (*(ent + j)) & PAGE_2M_MASK, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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}
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*/
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// 由于解析XSDT出现问题。暂时只使用Rsdpv2的rsdt，但是这是不符合ACPI规范的！！！
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ul rsdt_phys_base = rsdpv2->rsdp1.RsdtAddress & PAGE_2M_MASK;
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acpi_RSDT_offset = rsdpv2->rsdp1.RsdtAddress - rsdt_phys_base;
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mm_map_phys_addr(ACPI_RSDT_VIRT_ADDR_BASE, rsdt_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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kdebug("RSDT mapped!(v2)");
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rsdt = (struct acpi_RSDT_Structure_t *)(ACPI_RSDT_VIRT_ADDR_BASE + acpi_RSDT_offset);
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// 计算RSDT Entry的数量
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kdebug("offset=%d", sizeof(rsdt->header));
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acpi_RSDT_Entry_num = (rsdt->header.Length - 36) / 4;
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printk_color(ORANGE, BLACK, "RSDT Length=%dbytes.\n", rsdt->header.Length);
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printk_color(ORANGE, BLACK, "RSDT Entry num=%d\n", acpi_RSDT_Entry_num);
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mm_map_phys_addr(ACPI_RSDT_VIRT_ADDR_BASE, rsdt_phys_base, rsdt->header.Length + PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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// 映射所有的Entry的物理地址
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acpi_RSDT_entry_phys_base = ((ul)(rsdt->Entry)) & PAGE_2M_MASK;
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// 由于地址只是32bit的，并且存在脏数据，这里需要手动清除高32bit，否则会触发#GP
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acpi_RSDT_entry_phys_base = MASK_HIGH_32bit(acpi_RSDT_entry_phys_base);
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kdebug("entry=%#018lx", rsdt->Entry);
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kdebug("acpi_RSDT_entry_phys_base=%#018lx", acpi_RSDT_entry_phys_base);
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// 映射RSDT ENTRY的物理地址
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mm_map_phys_addr(ACPI_DESCRIPTION_HEDERS_BASE, acpi_RSDT_entry_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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}
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else if (rsdpv1->RsdtAddress != (uint)0x00UL)
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{ // 映射RSDT的物理地址到页表
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// 暂定字节数为2MB
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// 由于页表映射的原因，需要清除低21位地址，才能填入页表
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ul rsdt_phys_base = rsdpv1->RsdtAddress & PAGE_2M_MASK;
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acpi_RSDT_offset = rsdpv1->RsdtAddress - rsdt_phys_base;
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mm_map_phys_addr(ACPI_RSDT_VIRT_ADDR_BASE, rsdt_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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kdebug("RSDT mapped!");
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rsdt = (struct acpi_RSDT_Structure_t *)(ACPI_RSDT_VIRT_ADDR_BASE + acpi_RSDT_offset);
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// 计算RSDT Entry的数量
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kdebug("offset=%d", sizeof(rsdt->header));
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acpi_RSDT_Entry_num = (rsdt->header.Length - 36) / 4;
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printk_color(ORANGE, BLACK, "RSDT Length=%dbytes.\n", rsdt->header.Length);
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printk_color(ORANGE, BLACK, "RSDT Entry num=%d\n", acpi_RSDT_Entry_num);
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mm_map_phys_addr(ACPI_RSDT_VIRT_ADDR_BASE, rsdt_phys_base, rsdt->header.Length + PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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// 映射所有的Entry的物理地址
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acpi_RSDT_entry_phys_base = ((ul)(rsdt->Entry)) & PAGE_2M_MASK;
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// 由于地址只是32bit的，并且存在脏数据，这里需要手动清除高32bit，否则会触发#GP
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acpi_RSDT_entry_phys_base = MASK_HIGH_32bit(acpi_RSDT_entry_phys_base);
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kdebug("entry=%#018lx", rsdt->Entry);
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kdebug("acpi_RSDT_entry_phys_base=%#018lx", acpi_RSDT_entry_phys_base);
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// 映射RSDT ENTRY的物理地址
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mm_map_phys_addr(ACPI_DESCRIPTION_HEDERS_BASE, acpi_RSDT_entry_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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}
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else
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{
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// should not reach here!
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kBUG("At acpi_init(): Cannot get right SDT!");
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while (1)
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;
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}
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kdebug("entry=%#018lx", rsdt->Entry);
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kdebug("acpi_RSDT_entry_phys_base=%#018lx", acpi_RSDT_entry_phys_base);
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// 映射RSDT ENTRY的物理地址
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mm_map_phys_addr(ACPI_DESCRIPTION_HEDERS_BASE, acpi_RSDT_entry_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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kinfo("ACPI module initialized!")
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}
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@ -27,8 +27,11 @@
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// 0x80-0xff Reserved for OEM use
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#define ACPI_RSDT_VIRT_ADDR_BASE SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE + ACPI_RSDT_MAPPING_OFFSET
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#define ACPI_XSDT_VIRT_ADDR_BASE SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE + ACPI_XSDT_MAPPING_OFFSET
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#define ACPI_DESCRIPTION_HEDERS_BASE ACPI_RSDT_VIRT_ADDR_BASE + (PAGE_2M_SIZE)
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#define ACPI_XSDT_DESCRIPTION_HEDERS_BASE ACPI_XSDT_VIRT_ADDR_BASE + (PAGE_2M_SIZE)
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bool acpi_use_xsdt = false;
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struct acpi_RSDP_t
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{
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unsigned char Signature[8];
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@ -132,11 +135,11 @@ struct acpi_RSDT_Structure_t
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struct acpi_XSDT_Structure_t
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{
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// 通过RSDT的header->Length可以计算出entry的数量n
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// n = (length - 32)/8
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// n = (length - 36)/8
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struct acpi_system_description_table_header_t header;
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// 一个包含了n个64bit物理地址的数组，指向了其他的description headers
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ul *Entry;
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ul Entry;
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};
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/**
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@ -24,8 +24,8 @@ void apic_io_apic_init()
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{
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ul madt_addr;
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acpi_iter_SDT(acpi_get_MADT, &madt_addr);
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kdebug("madt_addr = %#018lx", (ul)madt_addr);
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acpi_iter_SDT(acpi_get_MADT, &madt_addr);
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madt = (struct acpi_Multiple_APIC_Description_Table_t *)madt_addr;
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kdebug("MADT->local intr controller addr=%#018lx", madt->Local_Interrupt_Controller_Address);
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@ -78,8 +78,7 @@ void apic_io_apic_init()
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apic_ioapic_write_rte(i, 0x10020 + ((i - 0x10) >> 1));
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}
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// 开启键盘中断，中断向量号为0x21，物理模式，投递至BSP处理器
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apic_ioapic_write_rte(0x12, 0x21);
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// 不需要手动启动IO APIC，只要初始化了RTE寄存器之后，io apic就会自动启用了。
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// 而且不是每台电脑都有RCBA寄存器，因此不需要手动启用IO APIC
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/*
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@ -94,7 +93,7 @@ void apic_io_apic_init()
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// get OIC address
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if (x > 0xfec00000 && x < 0xfee00000)
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{
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p = (unsigned int *)(x + 0x31feUL+SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE);
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p = (unsigned int *)(x + 0x31feUL-apic_ioapic_map.addr_phys+apic_ioapic_map.virtual_index_addr);
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}
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// enable IOAPIC
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@ -111,6 +110,8 @@ void apic_io_apic_init()
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*/
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void apic_local_apic_init()
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{
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// 映射Local APIC 寄存器地址
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mm_map_phys_addr(APIC_LOCAL_APIC_VIRT_BASE_ADDR, 0xfee00000, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
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uint a, b, c, d;
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cpu_cpuid(1, 0, &a, &b, &c, &d);
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@ -158,14 +159,25 @@ void apic_local_apic_init()
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// 检测是否成功启用xAPIC和x2APIC
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if (eax & 0xc00)
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kinfo("xAPIC & x2APIC enabled!");
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/*
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io_mfence();
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uint *svr = (uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_SVR);
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uint tmp_svr = *svr;
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tmp_svr &= (~(1 << 12));
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tmp_svr |= (1 << 8);
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kdebug("tmp_svr = %#018lx", tmp_svr);
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io_mfence();
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*svr = tmp_svr;
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io_mfence();
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kdebug("svr = %#018lx", *svr);
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*/
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// 设置SVR寄存器，开启local APIC、禁止EOI广播
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__asm__ __volatile__("movq 0x80f, %%rcx \n\t"
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__asm__ __volatile__("movq $0x80f, %%rcx \n\t"
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"rdmsr \n\t"
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"bts $8, %%rax \n\t"
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"bts $12, %%rax \n\t"
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"movq 0x80f, %%rcx \n\t"
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"movq $0x80f, %%rcx \n\t"
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"wrmsr \n\t"
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"movq $0x80f , %%rcx \n\t"
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"rdmsr \n\t"
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@ -200,6 +212,7 @@ void apic_local_apic_init()
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: "=a"(eax), "=d"(edx)::"memory");
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kdebug("get Local APIC ID: edx=%#010x, eax=%#010x", edx, eax);
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kdebug("local_apic_id=%#018lx", *(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_ID));
|
||||
|
||||
// 获取Local APIC Version
|
||||
// 0x803处是 Local APIC Version register
|
||||
@ -221,9 +234,9 @@ void apic_local_apic_init()
|
||||
|
||||
// 由于尚未配置LVT对应的处理程序，因此先屏蔽所有的LVT
|
||||
|
||||
__asm__ __volatile__(
|
||||
"movq $0x82f, %%rcx \n\t" // CMCI
|
||||
"wrmsr \n\t"
|
||||
// mask all LVT
|
||||
__asm__ __volatile__( //"movq $0x82f, %%rcx \n\t" //CMCI
|
||||
//"wrmsr \n\t"
|
||||
"movq $0x832, %%rcx \n\t" // Timer
|
||||
"wrmsr \n\t"
|
||||
"movq $0x833, %%rcx \n\t" // Thermal Monitor
|
||||
@ -239,6 +252,25 @@ void apic_local_apic_init()
|
||||
:
|
||||
: "a"(0x10000), "d"(0x00)
|
||||
: "memory");
|
||||
|
||||
/*
|
||||
io_mfence();
|
||||
*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_CMCI) = 0x1000000;
|
||||
io_mfence();
|
||||
kdebug("cmci = %#018lx", *(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_CMCI));
|
||||
*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_TIMER) = 0x1000000;
|
||||
io_mfence();
|
||||
*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_THERMAL) = 0x1000000;
|
||||
io_mfence();
|
||||
*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_PERFORMANCE_MONITOR) = 0x1000000;
|
||||
io_mfence();
|
||||
*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_LINT0) = 0x1000000;
|
||||
io_mfence();
|
||||
*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_LINT1) = 0x1000000;
|
||||
io_mfence();
|
||||
*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_ERROR) = 0x1000000;
|
||||
io_mfence();
|
||||
*/
|
||||
kdebug("All LVT Masked");
|
||||
|
||||
// 获取TPR寄存器的值
|
||||
@ -252,9 +284,6 @@ void apic_local_apic_init()
|
||||
"rdmsr \n\t"
|
||||
: "=a"(eax), "=d"(edx)::"memory");
|
||||
kdebug("LVT_PPR=%#010x", eax);
|
||||
|
||||
// 映射Local APIC 寄存器地址
|
||||
mm_map_phys_addr(APIC_LOCAL_APIC_VIRT_BASE_ADDR, 0xfee00000, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -289,7 +318,6 @@ 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];
|
||||
@ -303,12 +331,16 @@ void do_IRQ(struct pt_regs *rsp, ul number)
|
||||
// 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
|
||||
io_mfence();
|
||||
uint *eoi = (uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_EOI);
|
||||
*eoi = 0x00;
|
||||
io_mfence();
|
||||
// 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");
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
@ -395,14 +427,31 @@ void apic_ioapic_uninstall(ul irq_num)
|
||||
void apic_ioapic_level_ack(ul irq_num) // 电平触发
|
||||
{
|
||||
// 向EOI寄存器写入0x00表示结束中断
|
||||
/*io_mfence();
|
||||
uint *eoi = (uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_EOI);
|
||||
*eoi = 0x00;
|
||||
io_mfence(); */
|
||||
|
||||
__asm__ __volatile__("movq $0x00, %%rdx \n\t"
|
||||
"movq $0x00, %%rax \n\t"
|
||||
"movq $0x80b, %%rcx \n\t"
|
||||
"wrmsr \n\t" ::
|
||||
: "memory");
|
||||
*apic_ioapic_map.virtual_EOI_addr = irq_num;
|
||||
}
|
||||
|
||||
void apic_ioapic_edge_ack(ul irq_num) // 边沿触发
|
||||
{
|
||||
|
||||
// 向EOI寄存器写入0x00表示结束中断
|
||||
uint *eoi = (uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_EOI);
|
||||
*eoi = 0x00;
|
||||
/*
|
||||
uint *eoi = (uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_EOI);
|
||||
*eoi = 0x00;
|
||||
|
||||
*/
|
||||
__asm__ __volatile__("movq $0x00, %%rdx \n\t"
|
||||
"movq $0x00, %%rax \n\t"
|
||||
"movq $0x80b, %%rcx \n\t"
|
||||
"wrmsr \n\t" ::
|
||||
: "memory");
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user