DragonOS-Community/DragonOS
4
1
Fork 0
mirror of https://github.com/DragonOS-Community/DragonOS.git synced 2025-06-20 05:56:32 +00:00
Code Issues Releases Wiki Activity

将内核定位到高地址（存在bug，中断时会访问低地址）

Browse Source
This commit is contained in:
fslongjin
2022-04-10 21:30:16 +08:00
parent 3063a340e2
commit f5f36aafd8
23 changed files with 689 additions and 238 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
kernel/driver/disk/ahci/ahci.c
View File

@ -6,8 +6,8 @@ struct pci_device_structure_header_t *ahci_devs[MAX_AHCI_DEVICES];
uint32_t count_ahci_devices = 0;
uint64_t ahci_port_base_vaddr; // 端口映射base addr
uint64_t ahci_port_base_phys_addr; // 端口映射的物理基地址（ahci控制器的参数的地址都是物理地址）
uint64_t ahci_port_base_vaddr; // 端口映射base addr
uint64_t ahci_port_base_phys_addr; // 端口映射的物理基地址（ahci控制器的参数的地址都是物理地址）
static void start_cmd(HBA_PORT *port);
static void stop_cmd(HBA_PORT *port);
@ -27,12 +27,20 @@ void ahci_init()
{
kinfo("Initializing AHCI...");
pci_get_device_structure(0x1, 0x6, ahci_devs, &count_ahci_devices);
if (count_ahci_devices == 0)
{
kwarn("There is no AHCI device found on this computer!");
return;
}
// 映射ABAR
mm_map_phys_addr(AHCI_MAPPING_BASE, ((ul)(((struct pci_device_structure_general_device_t *)(ahci_devs[0]))->BAR5)) & PAGE_2M_MASK, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
// kdebug("ABAR mapped!");
kdebug("phys_2_virt(ahci_devs[0])= %#018lx",(ahci_devs[0]));
kdebug("((struct pci_device_structure_general_device_t *)phys_2_virt(ahci_devs[0])))->BAR5= %#018lx",((struct pci_device_structure_general_device_t *)(ahci_devs[0]))->BAR5);
uint32_t bar5 = ((struct pci_device_structure_general_device_t *)(ahci_devs[0]))->BAR5;
for (int i = 0; i < count_ahci_devices; ++i)
mm_map_phys_addr(AHCI_MAPPING_BASE, (ul)(bar5) & PAGE_2M_MASK, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
kdebug("ABAR mapped!");
for (int i = 0; i < count_ahci_devices; ++i)
{
// kdebug("[%d] class_code=%d, sub_class=%d, progIF=%d, ABAR=%#010lx", i, ahci_devs[i]->Class_code, ahci_devs[i]->SubClass, ahci_devs[i]->ProgIF, ((struct pci_device_structure_general_device_t *)(ahci_devs[i]))->BAR5);
// 赋值HBA_MEM结构体
@ -40,16 +48,18 @@ void ahci_init()
ahci_devices[i].hba_mem = (HBA_MEM *)(cal_HBA_MEM_VIRT_ADDR(i));
kdebug("ahci_devices[i].hba_mem = %#018lx", (ul)ahci_devices[i].hba_mem);
}
// todo: 支持多个ahci控制器。
ahci_port_base_vaddr = (uint64_t)kmalloc(1048576, 0);
kdebug("ahci_port_base_vaddr=%#018lx", ahci_port_base_vaddr);
ahci_probe_port(0);
port_rebase(&ahci_devices[0].hba_mem->ports[0], 0);
// 初始化请求队列
ahci_req_queue.in_service = NULL;
list_init(&(ahci_req_queue.queue_list));
ahci_req_queue.request_count = 0;
kinfo("AHCI initialized.");
}
// Check device type
@ -186,7 +196,7 @@ static void port_rebase(HBA_PORT *port, int portno)
memset((void *)phys_2_virt(cmdheader[i].ctba), 0, 256);
}
start_cmd(port); // Start command engine
}