1004e86ffSlogin // 导出 ahci 相关的 module 2004e86ffSlogin pub mod ahci_inode; 3004e86ffSlogin pub mod ahcidisk; 4004e86ffSlogin pub mod hba; 5004e86ffSlogin 6*816ee5aeSLoGin use crate::arch::MMArch; 7b087521eSChiichen use crate::driver::base::block::disk_info::BLK_GF_AHCI; 8eb49bb99S曾俊 use crate::driver::block::cache::cached_block_device::BlockCache; 9004e86ffSlogin // 依赖的rust工具包 108d94ea66SYJwu2023 use crate::driver::pci::pci::{ 118d94ea66SYJwu2023 get_pci_device_structure_mut, PciDeviceStructure, PCI_DEVICE_LINKEDLIST, 128d94ea66SYJwu2023 }; 13004e86ffSlogin use crate::filesystem::devfs::devfs_register; 142eab6dd7S曾俊 152eab6dd7S曾俊 use crate::driver::disk::ahci::{ 16004e86ffSlogin ahcidisk::LockedAhciDisk, 17004e86ffSlogin hba::HbaMem, 18004e86ffSlogin hba::{HbaPort, HbaPortType}, 19004e86ffSlogin }; 202eab6dd7S曾俊 use crate::libs::rwlock::RwLockWriteGuard; 212eab6dd7S曾俊 use crate::libs::spinlock::{SpinLock, SpinLockGuard}; 22*816ee5aeSLoGin use crate::mm::{MemoryManagementArch, VirtAddr}; 23004e86ffSlogin use ahci_inode::LockedAhciInode; 24b5b571e0SLoGin use alloc::{boxed::Box, collections::LinkedList, format, string::String, sync::Arc, vec::Vec}; 258d94ea66SYJwu2023 use core::sync::atomic::compiler_fence; 262eab6dd7S曾俊 use log::{debug, error}; 2791e9d4abSLoGin use system_error::SystemError; 28004e86ffSlogin 29004e86ffSlogin // 仅module内可见 全局数据区 hbr_port, disks 30004e86ffSlogin static LOCKED_HBA_MEM_LIST: SpinLock<Vec<&mut HbaMem>> = SpinLock::new(Vec::new()); 31004e86ffSlogin static LOCKED_DISKS_LIST: SpinLock<Vec<Arc<LockedAhciDisk>>> = SpinLock::new(Vec::new()); 32004e86ffSlogin 338d94ea66SYJwu2023 const AHCI_CLASS: u8 = 0x1; 348d94ea66SYJwu2023 const AHCI_SUBCLASS: u8 = 0x6; 358d94ea66SYJwu2023 36004e86ffSlogin /* TFES - Task File Error Status */ 37004e86ffSlogin #[allow(non_upper_case_globals)] 38004e86ffSlogin pub const HBA_PxIS_TFES: u32 = 1 << 30; 39004e86ffSlogin 408d94ea66SYJwu2023 /// @brief 寻找所有的ahci设备 418d94ea66SYJwu2023 /// @param list 链表的写锁 428d94ea66SYJwu2023 /// @return Result<Vec<&'a mut Box<dyn PciDeviceStructure>>, SystemError> 成功则返回包含所有ahci设备结构体的可变引用的链表,失败则返回err 438d94ea66SYJwu2023 fn ahci_device_search<'a>( 448d94ea66SYJwu2023 list: &'a mut RwLockWriteGuard<'_, LinkedList<Box<dyn PciDeviceStructure>>>, 458d94ea66SYJwu2023 ) -> Result<Vec<&'a mut Box<dyn PciDeviceStructure>>, SystemError> { 468d94ea66SYJwu2023 let result = get_pci_device_structure_mut(list, AHCI_CLASS, AHCI_SUBCLASS); 478d94ea66SYJwu2023 488d94ea66SYJwu2023 if result.is_empty() { 498d94ea66SYJwu2023 return Err(SystemError::ENODEV); 508d94ea66SYJwu2023 } 511496ba7bSLoGin 521496ba7bSLoGin return Ok(result); 538d94ea66SYJwu2023 } 548d94ea66SYJwu2023 55004e86ffSlogin /// @brief: 初始化 ahci 561496ba7bSLoGin pub fn ahci_init() -> Result<(), SystemError> { 578d94ea66SYJwu2023 let mut list = PCI_DEVICE_LINKEDLIST.write(); 588d94ea66SYJwu2023 let ahci_device = ahci_device_search(&mut list)?; 59004e86ffSlogin // 全局数据 - 列表 60004e86ffSlogin let mut disks_list = LOCKED_DISKS_LIST.lock(); 61004e86ffSlogin 628d94ea66SYJwu2023 for device in ahci_device { 638d94ea66SYJwu2023 let standard_device = device.as_standard_device_mut().unwrap(); 648d94ea66SYJwu2023 standard_device.bar_ioremap(); 657ae679ddSLoGin // 对于每一个ahci控制器分配一块空间 66004e86ffSlogin let ahci_port_base_vaddr = 67004e86ffSlogin Box::leak(Box::new([0u8; (1 << 20) as usize])) as *mut u8 as usize; 688d94ea66SYJwu2023 let virtaddr = standard_device 698d94ea66SYJwu2023 .bar() 708d94ea66SYJwu2023 .ok_or(SystemError::EACCES)? 718d94ea66SYJwu2023 .get_bar(5) 728d94ea66SYJwu2023 .or(Err(SystemError::EACCES))? 738d94ea66SYJwu2023 .virtual_address() 748d94ea66SYJwu2023 .unwrap(); 75004e86ffSlogin // 最后把这个引用列表放入到全局列表 76004e86ffSlogin let mut hba_mem_list = LOCKED_HBA_MEM_LIST.lock(); 778d94ea66SYJwu2023 //这里两次unsafe转引用规避rust只能有一个可变引用的检查,提高运行速度 782dd9f0c7SLoGin let hba_mem = unsafe { (virtaddr.data() as *mut HbaMem).as_mut().unwrap() }; 792dd9f0c7SLoGin hba_mem_list.push(unsafe { (virtaddr.data() as *mut HbaMem).as_mut().unwrap() }); 808d94ea66SYJwu2023 let pi = volatile_read!(hba_mem.pi); 818d94ea66SYJwu2023 let hba_mem_index = hba_mem_list.len() - 1; 82004e86ffSlogin drop(hba_mem_list); 83004e86ffSlogin // 初始化所有的port 84004e86ffSlogin let mut id = 0; 85004e86ffSlogin for j in 0..32 { 86004e86ffSlogin if (pi >> j) & 1 > 0 { 878d94ea66SYJwu2023 let hba_mem_list = LOCKED_HBA_MEM_LIST.lock(); 888d94ea66SYJwu2023 let hba_mem_port = &mut hba_mem.ports[j]; 898d94ea66SYJwu2023 let tp = hba_mem_port.check_type(); 90004e86ffSlogin match tp { 91004e86ffSlogin HbaPortType::None => { 922eab6dd7S曾俊 debug!("<ahci_rust_init> Find a None type Disk."); 93004e86ffSlogin } 94004e86ffSlogin HbaPortType::Unknown(err) => { 952eab6dd7S曾俊 debug!("<ahci_rust_init> Find a Unknown({:?}) type Disk.", err); 96004e86ffSlogin } 97004e86ffSlogin _ => { 982eab6dd7S曾俊 debug!("<ahci_rust_init> Find a {:?} type Disk.", tp); 99004e86ffSlogin 100004e86ffSlogin // 计算地址 101*816ee5aeSLoGin let fb = unsafe { 102*816ee5aeSLoGin MMArch::virt_2_phys(VirtAddr::new( 103*816ee5aeSLoGin ahci_port_base_vaddr + (32 << 10) + (j << 8), 104*816ee5aeSLoGin )) 105*816ee5aeSLoGin } 106*816ee5aeSLoGin .unwrap() 107*816ee5aeSLoGin .data(); 108*816ee5aeSLoGin let clb = unsafe { 109*816ee5aeSLoGin MMArch::virt_2_phys(VirtAddr::new(ahci_port_base_vaddr + (j << 10))) 110*816ee5aeSLoGin .unwrap() 111*816ee5aeSLoGin .data() 112*816ee5aeSLoGin }; 113004e86ffSlogin let ctbas = (0..32) 114*816ee5aeSLoGin .map(|x| unsafe { 115*816ee5aeSLoGin MMArch::virt_2_phys(VirtAddr::new( 116004e86ffSlogin ahci_port_base_vaddr + (40 << 10) + (j << 13) + (x << 8), 117*816ee5aeSLoGin )) 118*816ee5aeSLoGin .unwrap() 119*816ee5aeSLoGin .data() as u64 120004e86ffSlogin }) 121004e86ffSlogin .collect::<Vec<_>>(); 122004e86ffSlogin 123004e86ffSlogin // 初始化 port 1248d94ea66SYJwu2023 hba_mem_port.init(clb as u64, fb as u64, &ctbas); 125004e86ffSlogin drop(hba_mem_list); 126004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 127004e86ffSlogin // 创建 disk 128004e86ffSlogin disks_list.push(LockedAhciDisk::new( 129004e86ffSlogin format!("ahci_disk_{}", id), 130004e86ffSlogin BLK_GF_AHCI, 1318d94ea66SYJwu2023 hba_mem_index as u8, 132004e86ffSlogin j as u8, 133004e86ffSlogin )?); 134004e86ffSlogin id += 1; // ID 从0开始 135004e86ffSlogin 1362eab6dd7S曾俊 debug!("start register ahci device"); 137004e86ffSlogin 138004e86ffSlogin // 挂载到devfs上面去 139004e86ffSlogin let ret = devfs_register( 140004e86ffSlogin format!("ahci_{}", id).as_str(), 141004e86ffSlogin LockedAhciInode::new(disks_list.last().unwrap().clone()), 142004e86ffSlogin ); 143004e86ffSlogin if let Err(err) = ret { 1442eab6dd7S曾俊 error!( 145676b8ef6SMork "Ahci_{} ctrl = {}, port = {} failed to register, error code = {:?}", 146004e86ffSlogin id, 1478d94ea66SYJwu2023 hba_mem_index as u8, 148004e86ffSlogin j, 149004e86ffSlogin err 150004e86ffSlogin ); 151004e86ffSlogin } 152004e86ffSlogin } 153004e86ffSlogin } 154004e86ffSlogin } 155004e86ffSlogin } 156eb49bb99S曾俊 BlockCache::init(); 157004e86ffSlogin } 158004e86ffSlogin 159004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 160004e86ffSlogin return Ok(()); 161004e86ffSlogin } 162004e86ffSlogin 163004e86ffSlogin /// @brief: 获取所有的 disk 164004e86ffSlogin #[allow(dead_code)] 165004e86ffSlogin pub fn disks() -> Vec<Arc<LockedAhciDisk>> { 166004e86ffSlogin let disks_list = LOCKED_DISKS_LIST.lock(); 167004e86ffSlogin return disks_list.clone(); 168004e86ffSlogin } 169004e86ffSlogin 170004e86ffSlogin /// @brief: 通过 name 获取 disk 171676b8ef6SMork pub fn get_disks_by_name(name: String) -> Result<Arc<LockedAhciDisk>, SystemError> { 172004e86ffSlogin let disks_list: SpinLockGuard<Vec<Arc<LockedAhciDisk>>> = LOCKED_DISKS_LIST.lock(); 1738d94ea66SYJwu2023 let result = disks_list 1748d94ea66SYJwu2023 .iter() 1758d94ea66SYJwu2023 .find(|x| x.0.lock().name == name) 1768d94ea66SYJwu2023 .ok_or(SystemError::ENXIO)? 1778d94ea66SYJwu2023 .clone(); 1788d94ea66SYJwu2023 return Ok(result); 179004e86ffSlogin } 180004e86ffSlogin 181004e86ffSlogin /// @brief: 通过 ctrl_num 和 port_num 获取 port 1828d94ea66SYJwu2023 fn _port(ctrl_num: u8, port_num: u8) -> &'static mut HbaPort { 183004e86ffSlogin let list: SpinLockGuard<Vec<&mut HbaMem>> = LOCKED_HBA_MEM_LIST.lock(); 184004e86ffSlogin let port: &HbaPort = &list[ctrl_num as usize].ports[port_num as usize]; 1858d94ea66SYJwu2023 186004e86ffSlogin return unsafe { (port as *const HbaPort as *mut HbaPort).as_mut().unwrap() }; 187004e86ffSlogin } 188