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在acpi中使用mmio来映射rsdt表(#40)
* 在acpi中使用mmio来映射rsdt表 * bugfix: 修复page fault的问题 Co-authored-by: fslongjin <longjin@RinGoTek.cn>
This commit is contained in:
houmkh
GitHub
parent
55e63fcb63
commit
6db92c86b8
@ -3,8 +3,9 @@
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#include <common/kprint.h>
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#include <driver/multiboot2/multiboot2.h>
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#include <mm/mm.h>
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#include <mm/mmio.h>
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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_RSDT_entry_vaddr(phys_addr) (acpi_description_header_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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@ -22,7 +23,9 @@ static uint acpi_XSDT_Entry_num = 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 uint64_t acpi_madt_vaddr = 0; // MADT的虚拟地址
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static uint64_t acpi_madt_vaddr = 0; // MADT的虚拟地址
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static uint64_t acpi_rsdt_virt_addr_base = 0; // RSDT的虚拟地址
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static uint64_t acpi_description_header_base = 0; // RSDT中的第一个entry所在虚拟地址
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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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@ -41,8 +44,8 @@ void acpi_iter_SDT(bool (*_fun)(const struct acpi_system_description_table_heade
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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, false);
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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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mm_map_phys_addr(acpi_description_header_base + PAGE_2M_SIZE * i, (*(ent + i)) & PAGE_2M_MASK, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
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sdt_header = (struct acpi_system_description_table_header_t *)((ul)(acpi_description_header_base + PAGE_2M_SIZE * i));
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if (_fun(sdt_header, _data) == true)
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return;
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@ -100,7 +103,6 @@ bool acpi_get_HPET(const struct acpi_system_description_table_header_t *_iter_da
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return true;
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}
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/**
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* @brief 初始化acpi模块
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*
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@ -110,26 +112,20 @@ void acpi_init()
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{
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kinfo("Initializing ACPI...");
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// 获取rsdp
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// 获取物理地址
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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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kdebug("RSDT_phys_Address=%#018lx", rsdpv1->RsdtAddress);
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kdebug("RSDP_Revision=%d", rsdpv1->Revision);
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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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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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uint64_t paddr = 0;
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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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// 不要删除这段注释（因为还不确定是代码的bug，还是真机的bug）
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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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@ -156,12 +152,23 @@ void acpi_init()
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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, false);
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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, false);
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//申请mmio空间
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uint64_t size = 0;
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mmio_create(PAGE_2M_SIZE, VM_IO | VM_DONTCOPY, &acpi_rsdt_virt_addr_base, &size);
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//映射rsdt表
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paddr = (uint64_t)rsdt_phys_base;
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mm_map(&initial_mm, acpi_rsdt_virt_addr_base, PAGE_2M_SIZE, paddr);
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// rsdt表虚拟地址
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rsdt = (struct acpi_RSDT_Structure_t *)(acpi_rsdt_virt_addr_base + acpi_RSDT_offset);
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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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@ -169,43 +176,57 @@ void acpi_init()
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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, false);
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//申请mmio空间
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mmio_create(PAGE_2M_SIZE, VM_IO | VM_DONTCOPY, &acpi_description_header_base, &size);
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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, false);
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paddr = (uint64_t)acpi_RSDT_entry_phys_base;
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mm_map(&initial_mm, acpi_description_header_base, PAGE_2M_SIZE, paddr);
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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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{
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// rsdt表物理地址
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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, false);
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kdebug("rsdpv1->RsdtAddress=%#018lx", rsdpv1->RsdtAddress);
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//申请mmio空间
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uint64_t size = 0;
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mmio_create(PAGE_2M_SIZE, VM_IO | VM_DONTCOPY, &acpi_rsdt_virt_addr_base, &size);
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// kdebug("acpi_rsdt_virt_addr_base = %#018lx,size= %#010lx", acpi_rsdt_virt_addr_base, size);
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//映射rsdt表
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paddr = (uint64_t)rsdt_phys_base;
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mm_map(&initial_mm, acpi_rsdt_virt_addr_base, PAGE_2M_SIZE, paddr);
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// rsdt表虚拟地址
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rsdt = (struct acpi_RSDT_Structure_t *)(acpi_rsdt_virt_addr_base + acpi_RSDT_offset);
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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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// kdebug("length = %d",rsdt->header.Length);
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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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// 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, false);
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//申请mmio空间
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mmio_create(PAGE_2M_SIZE, VM_IO | VM_DONTCOPY, &acpi_description_header_base, &size);
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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, false);
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paddr = (uint64_t)acpi_RSDT_entry_phys_base;
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mm_map(&initial_mm, acpi_description_header_base, PAGE_2M_SIZE, paddr);
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// kinfo("entry mapped!");
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}
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else
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{
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@ -216,4 +237,5 @@ void acpi_init()
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}
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kinfo("ACPI module initialized!");
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return;
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}
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@ -25,11 +25,8 @@
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#define ACPI_ICS_TYPE_PROCESSOR_GIC_ITS 0xF
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// 0x10-0x7f Reserved. OSPM skips structures of the reserved type.
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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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// extern const uint64_t acpi_rsdt_virt_addr_base ; // RSDT的虚拟地址
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// extern const uint64_t acpi_description_header_base ; // RSDT中的第一个entry所在虚拟地址
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bool acpi_use_xsdt = false;
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struct acpi_RSDP_t
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@ -229,6 +229,26 @@ void mm_init()
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// 初始化slab内存池
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slab_init();
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page_table_init();
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initial_mm.pgd = (pml4t_t *)get_CR3();
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initial_mm.code_addr_start = memory_management_struct.kernel_code_start;
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initial_mm.code_addr_end = memory_management_struct.kernel_code_end;
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initial_mm.data_addr_start = (ul)&_data;
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initial_mm.data_addr_end = memory_management_struct.kernel_data_end;
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initial_mm.rodata_addr_start = (ul)&_rodata;
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initial_mm.rodata_addr_end = (ul)&_erodata;
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initial_mm.bss_start = (uint64_t)&_bss;
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initial_mm.bss_end = (uint64_t)&_ebss;
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initial_mm.brk_start = memory_management_struct.start_brk;
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initial_mm.brk_end = current_pcb->addr_limit;
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initial_mm.stack_start = _stack_start;
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initial_mm.vmas = NULL;
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mmio_init();
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}
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@ -45,8 +45,6 @@
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// 在这个地址以上的虚拟空间，用来进行特殊的映射
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#define SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE 0xffffa00000000000UL
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#define FRAME_BUFFER_MAPPING_OFFSET 0x3000000UL
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#define ACPI_RSDT_MAPPING_OFFSET 0x7000000UL
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#define ACPI_XSDT_MAPPING_OFFSET 0x9000000UL
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#define IO_APIC_MAPPING_OFFSET 0xfec00000UL
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#define LOCAL_APIC_MAPPING_OFFSET 0xfee00000UL
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#define AHCI_MAPPING_OFFSET 0xff200000UL // AHCI 映射偏移量,之后使用了4M的地址
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@ -351,8 +351,10 @@ int mm_map_vma(struct vm_area_struct *vma, uint64_t paddr)
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int retval = 0;
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// 获取物理地址对应的页面
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struct Page *pg;
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uint64_t page_flags = 0;
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if (vma->vm_flags & VM_IO) // 对于mmio的内存，创建新的page结构体
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{
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page_flags = PAGE_PWT | PAGE_PCD;
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if (unlikely(vma->anon_vma == NULL || vma->anon_vma->page == NULL))
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pg = __create_mmio_page_struct(paddr);
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else
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@ -381,15 +383,14 @@ int mm_map_vma(struct vm_area_struct *vma, uint64_t paddr)
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/*
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todo: 限制页面的读写权限
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*/
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// kdebug("len2m=%d", len_2m);
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// 先映射2M页
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if (likely(len_2m > 0))
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{
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uint64_t page_flags = 0;
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if (vma->vm_flags & VM_USER)
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page_flags = PAGE_USER_PAGE;
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page_flags |= PAGE_USER_PAGE;
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else
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page_flags = PAGE_KERNEL_PAGE;
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page_flags |= PAGE_KERNEL_PAGE;
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// 这里直接设置user标志位为false，因为该函数内部会对其进行自动校正
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retval = mm_map_proc_page_table((uint64_t)vma->vm_mm->pgd, true, vma->vm_start, paddr, len_2m, page_flags, false, false, false);
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if (unlikely(retval != 0))
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@ -400,11 +401,10 @@ int mm_map_vma(struct vm_area_struct *vma, uint64_t paddr)
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{
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len_4k = ALIGN(len_4k, PAGE_4K_SIZE);
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uint64_t page_flags = 0;
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if (vma->vm_flags & VM_USER)
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page_flags = PAGE_USER_4K_PAGE;
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page_flags |= PAGE_USER_4K_PAGE;
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else
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page_flags = PAGE_KERNEL_4K_PAGE;
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page_flags |= PAGE_KERNEL_4K_PAGE;
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// 这里直接设置user标志位为false，因为该函数内部会对其进行自动校正
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retval = mm_map_proc_page_table((uint64_t)vma->vm_mm->pgd, true, vma->vm_start + len_2m, paddr + len_2m, len_4k, page_flags, false, false, true);
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if (unlikely(retval != 0))
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