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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）

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This commit is contained in:
fslongjin
2022-03-18 19:18:22 +08:00
parent 8272257757
commit 75eea551e6
3 changed files with 192 additions and 62 deletions
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156
kernel/driver/acpi/acpi.c
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@ -4,21 +4,25 @@
#include "../multiboot2/multiboot2.h"
#include "../../mm/mm.h"
// 获取RSDT entry的虚拟地址
#define acpi_get_RSDT_entry_vaddr(phys_addr) (ACPI_DESCRIPTION_HEDERS_BASE + (phys_addr)-acpi_RSDT_entry_phys_base)
#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_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;
static struct acpi_RSDP_2_t *rsdpv2;
static struct acpi_RSDT_Structure_t *rsdt;
static struct acpi_XSDT_Structure_t *xsdt;
static struct multiboot_tag_old_acpi_t old_acpi;
static struct multiboot_tag_new_acpi_t new_acpi;
static ul acpi_RSDT_offset = 0;
static ul acpi_XSDT_offset = 0;
static uint acpi_RSDT_Entry_num = 0;
static uint acpi_XSDT_Entry_num = 0;
// RSDT中的第一个entry所在物理页的基地址
static ul acpi_RSDT_entry_phys_base = 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 ul acpi_XSDT_entry_phys_base = 0; // XSDT中的第一个entry所在物理页的基地址
/**
* @brief 迭代器，用于迭代描述符头（位于ACPI标准文件的Table 5-29）
@ -30,17 +34,30 @@ void acpi_iter_SDT(bool (*_fun)(const struct acpi_system_description_table_heade
{
struct acpi_system_description_table_header_t *sdt_header;
uint *ent = &(rsdt->Entry);
for (int i = 0; i < acpi_RSDT_Entry_num; ++i)
if (acpi_use_xsdt)
{
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);
sdt_header = (struct acpi_system_description_table_header_t *)((ul)(ACPI_XSDT_DESCRIPTION_HEDERS_BASE + PAGE_2M_SIZE * i));
sdt_header = (struct acpi_system_description_table_header_t *)(acpi_get_RSDT_entry_vaddr((ul)(*(ent + i))));
kwarn("vvv=%#018lx", (ul)(*(ent + i)));
kwarn("vaddr=%#018lx", (ul)acpi_get_RSDT_entry_vaddr((ul)(*(ent + i))));
printk_color(ORANGE, BLACK,"kkl=%s\n", sdt_header->Signature);
if (_fun(sdt_header, _data) == true)
return;
}
}
else
{
uint *ent = &(rsdt->Entry);
for (int i = 0; i < acpi_RSDT_Entry_num; ++i)
{
if (_fun(sdt_header, _data) == true)
return;
sdt_header = (struct acpi_system_description_table_header_t *)(acpi_get_RSDT_entry_vaddr((ul)(*(ent + i))));
if (_fun(sdt_header, _data) == true)
return;
}
}
return;
@ -61,9 +78,7 @@ bool acpi_get_MADT(const struct acpi_system_description_table_header_t *_iter_da
return false;
//*(struct acpi_Multiple_APIC_Description_Table_t *)_data = *(struct acpi_Multiple_APIC_Description_Table_t *)_iter_data;
// 返回MADT的虚拟地址
*(ul *)_data = (ul)_iter_data;
printk_color(ORANGE, BLACK,"xxx=%#018lx\n", (ul)_iter_data);
return true;
}
@ -82,42 +97,105 @@ void acpi_init()
int reserved;
multiboot2_iter(multiboot2_get_acpi_old_RSDP, &old_acpi, &reserved);
*rsdpv1 = (old_acpi.rsdp);
rsdpv1 = &(old_acpi.rsdp);
kdebug("RSDT_phys_Address=%#018lx", rsdpv1->RsdtAddress);
kdebug("RSDP_Revision=%d", rsdpv1->Revision);
// 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
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);
kdebug("RSDT mapped!");
multiboot2_iter(multiboot2_get_acpi_new_RSDP, &new_acpi, &reserved);
*rsdpv2 = new_acpi.rsdp;
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);
rsdt = (struct acpi_RSDT_Structure_t *)(ACPI_RSDT_VIRT_ADDR_BASE + acpi_RSDT_offset);
// An ACPI-compatible OS must use the XSDT if present
if (rsdpv2->XsdtAddress != 0x00UL)
{
/*
acpi_use_xsdt = true;
ul xsdt_phys_base = rsdpv2->XsdtAddress & PAGE_2M_MASK;
acpi_XSDT_offset = rsdpv2->XsdtAddress - xsdt_phys_base;
mm_map_phys_addr(ACPI_XSDT_VIRT_ADDR_BASE, xsdt_phys_base, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
kdebug("XSDT mapped!");
// 计算RSDT Entry的数量
kdebug("offset=%d", sizeof(rsdt->header));
acpi_RSDT_Entry_num = (rsdt->header.Length - 36) / 4;
xsdt = (struct acpi_XSDT_Structure_t *)(ACPI_XSDT_VIRT_ADDR_BASE + acpi_XSDT_offset);
// 计算RSDT Entry的数量
kdebug("offset=%d", sizeof(xsdt->header));
kdebug("xsdt sign=%s", xsdt->header.Signature);
acpi_XSDT_Entry_num = (xsdt->header.Length - sizeof(xsdt->header)) / 8;
printk_color(ORANGE, BLACK, "RSDT Length=%dbytes.\n", rsdt->header.Length);
printk_color(ORANGE, BLACK, "RSDT Entry num=%d\n", acpi_RSDT_Entry_num);
printk_color(ORANGE, BLACK, "XSDT Length=%dbytes.\n", xsdt->header.Length);
printk_color(ORANGE, BLACK, "XSDT Entry num=%d\n", acpi_XSDT_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);
// 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);
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);
// 映射所有的Entry的物理地址
ul *ent = &(xsdt->Entry);
for (int j = 0; j < acpi_XSDT_Entry_num; ++j)
{
kdebug("entry=%#018lx, virt=%#018lx", (*(ent + j)) & PAGE_2M_MASK, ACPI_XSDT_DESCRIPTION_HEDERS_BASE + PAGE_2M_SIZE * j);
// 映射RSDT ENTRY的物理地址
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);
}
*/
// 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);
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;
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);
// 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);
}
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
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);
kdebug("RSDT mapped!");
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;
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);
// 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);
}
else
{
// should not reach here!
kBUG("At acpi_init(): Cannot get right SDT!");
while (1)
;
}
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);
kinfo("ACPI module initialized!")
}