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在acpi中使用mmio来映射rsdt表(#40)

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* 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
2022-09-09 00:21:46 +08:00
committed by GitHub
parent 55e63fcb63
commit 6db92c86b8
5 changed files with 85 additions and 48 deletions
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90
kernel/driver/acpi/acpi.c
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@ -3,8 +3,9 @@
#include <common/kprint.h>
#include <driver/multiboot2/multiboot2.h>
#include <mm/mm.h>
#include <mm/mmio.h>
#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
#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
// #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
static struct acpi_RSDP_t *rsdpv1;
@ -22,7 +23,9 @@ static uint acpi_XSDT_Entry_num = 0;
static ul acpi_RSDT_entry_phys_base = 0; // RSDT中的第一个entry所在物理页的基地址
static uint64_t acpi_madt_vaddr = 0; // MADT的虚拟地址
static uint64_t acpi_madt_vaddr = 0; // MADT的虚拟地址
static uint64_t acpi_rsdt_virt_addr_base = 0; // RSDT的虚拟地址
static uint64_t acpi_description_header_base = 0; // RSDT中的第一个entry所在虚拟地址
// static ul acpi_XSDT_entry_phys_base = 0; // XSDT中的第一个entry所在物理页的基地址
@ -41,8 +44,8 @@ void acpi_iter_SDT(bool (*_fun)(const struct acpi_system_description_table_heade
ul *ent = &(xsdt->Entry);
for (int i = 0; i < acpi_XSDT_Entry_num; ++i)
{
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);
sdt_header = (struct acpi_system_description_table_header_t *)((ul)(ACPI_XSDT_DESCRIPTION_HEDERS_BASE + PAGE_2M_SIZE * i));
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);
sdt_header = (struct acpi_system_description_table_header_t *)((ul)(acpi_description_header_base + PAGE_2M_SIZE * i));
if (_fun(sdt_header, _data) == true)
return;
@ -100,7 +103,6 @@ bool acpi_get_HPET(const struct acpi_system_description_table_header_t *_iter_da
return true;
}
/**
* @brief 初始化acpi模块
*
@ -110,26 +112,20 @@ void acpi_init()
{
kinfo("Initializing ACPI...");
// 获取rsdp
// 获取物理地址
int reserved;
multiboot2_iter(multiboot2_get_acpi_old_RSDP, &old_acpi, &reserved);
rsdpv1 = &(old_acpi.rsdp);
kdebug("RSDT_phys_Address=%#018lx", rsdpv1->RsdtAddress);
kdebug("RSDP_Revision=%d", rsdpv1->Revision);
multiboot2_iter(multiboot2_get_acpi_new_RSDP, &new_acpi, &reserved);
rsdpv2 = &(new_acpi.rsdp);
kdebug("Rsdt_v2_phys_Address=%#018lx", rsdpv2->rsdp1.RsdtAddress);
kdebug("Xsdt_phys_Address=%#018lx", rsdpv2->XsdtAddress);
kdebug("RSDP_v2_Revision=%d", rsdpv2->rsdp1.Revision);
uint64_t paddr = 0;
// An ACPI-compatible OS must use the XSDT if present
if (rsdpv2->XsdtAddress != 0x00UL)
{
// 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）
/*
acpi_use_xsdt = true;
ul xsdt_phys_base = rsdpv2->XsdtAddress & PAGE_2M_MASK;
@ -156,12 +152,23 @@ void acpi_init()
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);
}
*/
// 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！！！
ul rsdt_phys_base = rsdpv2->rsdp1.RsdtAddress & PAGE_2M_MASK;
acpi_RSDT_offset = rsdpv2->rsdp1.RsdtAddress - rsdt_phys_base;
mm_map_phys_addr(ACPI_RSDT_VIRT_ADDR_BASE, rsdt_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
//申请mmio空间
uint64_t size = 0;
mmio_create(PAGE_2M_SIZE, VM_IO | VM_DONTCOPY, &acpi_rsdt_virt_addr_base, &size);
//映射rsdt表
paddr = (uint64_t)rsdt_phys_base;
mm_map(&initial_mm, acpi_rsdt_virt_addr_base, PAGE_2M_SIZE, paddr);
// rsdt表虚拟地址
rsdt = (struct acpi_RSDT_Structure_t *)(acpi_rsdt_virt_addr_base + acpi_RSDT_offset);
kdebug("RSDT mapped!(v2)");
rsdt = (struct acpi_RSDT_Structure_t *)(ACPI_RSDT_VIRT_ADDR_BASE + acpi_RSDT_offset);
// 计算RSDT Entry的数量
kdebug("offset=%d", sizeof(rsdt->header));
acpi_RSDT_Entry_num = (rsdt->header.Length - 36) / 4;
@ -169,43 +176,57 @@ void acpi_init()
printk_color(ORANGE, BLACK, "RSDT Length=%dbytes.\n", rsdt->header.Length);
printk_color(ORANGE, BLACK, "RSDT Entry num=%d\n", acpi_RSDT_Entry_num);
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);
//申请mmio空间
mmio_create(PAGE_2M_SIZE, VM_IO | VM_DONTCOPY, &acpi_description_header_base, &size);
// 映射所有的Entry的物理地址
acpi_RSDT_entry_phys_base = ((ul)(rsdt->Entry)) & PAGE_2M_MASK;
// 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
acpi_RSDT_entry_phys_base = MASK_HIGH_32bit(acpi_RSDT_entry_phys_base);
kdebug("entry=%#018lx", rsdt->Entry);
kdebug("acpi_RSDT_entry_phys_base=%#018lx", acpi_RSDT_entry_phys_base);
// 映射RSDT ENTRY的物理地址
mm_map_phys_addr(ACPI_DESCRIPTION_HEDERS_BASE, acpi_RSDT_entry_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
paddr = (uint64_t)acpi_RSDT_entry_phys_base;
mm_map(&initial_mm, acpi_description_header_base, PAGE_2M_SIZE, paddr);
}
else if (rsdpv1->RsdtAddress != (uint)0x00UL)
{ // 映射RSDT的物理地址到页表
// 暂定字节数为2MB
// 由于页表映射的原因，需要清除低21位地址，才能填入页表
{
// rsdt表物理地址
ul rsdt_phys_base = rsdpv1->RsdtAddress & PAGE_2M_MASK;
acpi_RSDT_offset = rsdpv1->RsdtAddress - rsdt_phys_base;
mm_map_phys_addr(ACPI_RSDT_VIRT_ADDR_BASE, rsdt_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
kdebug("rsdpv1->RsdtAddress=%#018lx", rsdpv1->RsdtAddress);
//申请mmio空间
uint64_t size = 0;
mmio_create(PAGE_2M_SIZE, VM_IO | VM_DONTCOPY, &acpi_rsdt_virt_addr_base, &size);
// kdebug("acpi_rsdt_virt_addr_base = %#018lx,size= %#010lx", acpi_rsdt_virt_addr_base, size);
//映射rsdt表
paddr = (uint64_t)rsdt_phys_base;
mm_map(&initial_mm, acpi_rsdt_virt_addr_base, PAGE_2M_SIZE, paddr);
// rsdt表虚拟地址
rsdt = (struct acpi_RSDT_Structure_t *)(acpi_rsdt_virt_addr_base + acpi_RSDT_offset);
kdebug("RSDT mapped!");
rsdt = (struct acpi_RSDT_Structure_t *)(ACPI_RSDT_VIRT_ADDR_BASE + acpi_RSDT_offset);
// kdebug("length = %d",rsdt->header.Length);
// 计算RSDT Entry的数量
kdebug("offset=%d", sizeof(rsdt->header));
// kdebug("offset=%d", sizeof(rsdt->header));
acpi_RSDT_Entry_num = (rsdt->header.Length - 36) / 4;
printk_color(ORANGE, BLACK, "RSDT Length=%dbytes.\n", rsdt->header.Length);
printk_color(ORANGE, BLACK, "RSDT Entry num=%d\n", acpi_RSDT_Entry_num);
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);
//申请mmio空间
mmio_create(PAGE_2M_SIZE, VM_IO | VM_DONTCOPY, &acpi_description_header_base, &size);
// 映射所有的Entry的物理地址
acpi_RSDT_entry_phys_base = ((ul)(rsdt->Entry)) & PAGE_2M_MASK;
// 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
acpi_RSDT_entry_phys_base = MASK_HIGH_32bit(acpi_RSDT_entry_phys_base);
kdebug("entry=%#018lx", rsdt->Entry);
kdebug("acpi_RSDT_entry_phys_base=%#018lx", acpi_RSDT_entry_phys_base);
// 映射RSDT ENTRY的物理地址
mm_map_phys_addr(ACPI_DESCRIPTION_HEDERS_BASE, acpi_RSDT_entry_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
paddr = (uint64_t)acpi_RSDT_entry_phys_base;
mm_map(&initial_mm, acpi_description_header_base, PAGE_2M_SIZE, paddr);
// kinfo("entry mapped!");
}
else
{
@ -216,4 +237,5 @@ void acpi_init()
}
kinfo("ACPI module initialized!");
}
return;
}