1004e86ffSlogin use super::{_port, hba::HbaCmdTable, virt_2_phys}; 2b087521eSChiichen use crate::driver::base::block::block_device::{BlockDevice, BlockId}; 3b087521eSChiichen use crate::driver::base::block::disk_info::Partition; 4b087521eSChiichen use crate::driver::base::block::SeekFrom; 5*06d5e247SLoGin use crate::driver::base::device::bus::Bus; 6*06d5e247SLoGin use crate::driver::base::device::{Device, DeviceType, IdTable}; 7*06d5e247SLoGin use crate::driver::base::kobject::{KObjType, KObject, KObjectState}; 8*06d5e247SLoGin use crate::driver::base::kset::KSet; 9004e86ffSlogin use crate::driver::disk::ahci::HBA_PxIS_TFES; 10*06d5e247SLoGin use crate::driver::Driver; 11*06d5e247SLoGin use crate::filesystem::kernfs::KernFSInode; 12004e86ffSlogin use crate::filesystem::mbr::MbrDiskPartionTable; 13660a04ceSlogin use crate::include::bindings::bindings::verify_area; 14004e86ffSlogin 15b087521eSChiichen use crate::kdebug; 16*06d5e247SLoGin use crate::libs::rwlock::{RwLockReadGuard, RwLockWriteGuard}; 17004e86ffSlogin use crate::libs::{spinlock::SpinLock, vec_cursor::VecCursor}; 18004e86ffSlogin use crate::mm::phys_2_virt; 19676b8ef6SMork use crate::syscall::SystemError; 20004e86ffSlogin use crate::{ 21004e86ffSlogin driver::disk::ahci::hba::{ 22004e86ffSlogin FisRegH2D, FisType, HbaCmdHeader, ATA_CMD_READ_DMA_EXT, ATA_CMD_WRITE_DMA_EXT, 23004e86ffSlogin ATA_DEV_BUSY, ATA_DEV_DRQ, 24004e86ffSlogin }, 25004e86ffSlogin kerror, 26004e86ffSlogin }; 27004e86ffSlogin 28004e86ffSlogin use alloc::sync::Weak; 29004e86ffSlogin use alloc::{string::String, sync::Arc, vec::Vec}; 30004e86ffSlogin 31004e86ffSlogin use core::fmt::Debug; 327ae679ddSLoGin use core::sync::atomic::{compiler_fence, Ordering}; 33004e86ffSlogin use core::{mem::size_of, ptr::write_bytes}; 34004e86ffSlogin 35004e86ffSlogin /// @brief: 只支持MBR分区格式的磁盘结构体 36004e86ffSlogin pub struct AhciDisk { 37004e86ffSlogin pub name: String, 38004e86ffSlogin pub flags: u16, // 磁盘的状态flags 39004e86ffSlogin pub partitions: Vec<Arc<Partition>>, // 磁盘分区数组 40004e86ffSlogin // port: &'static mut HbaPort, // 控制硬盘的端口 41004e86ffSlogin pub ctrl_num: u8, 42004e86ffSlogin pub port_num: u8, 43004e86ffSlogin /// 指向LockAhciDisk的弱引用 44004e86ffSlogin self_ref: Weak<LockedAhciDisk>, 45004e86ffSlogin } 46004e86ffSlogin 47004e86ffSlogin /// @brief: 带锁的AhciDisk 48004e86ffSlogin #[derive(Debug)] 49004e86ffSlogin pub struct LockedAhciDisk(pub SpinLock<AhciDisk>); 50004e86ffSlogin /// 函数实现 51004e86ffSlogin impl Debug for AhciDisk { 52004e86ffSlogin fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { 53004e86ffSlogin write!( 54004e86ffSlogin f, 55004e86ffSlogin "{{ name: {}, flags: {}, part_s: {:?} }}", 56004e86ffSlogin self.name, self.flags, self.partitions 57004e86ffSlogin )?; 58004e86ffSlogin return Ok(()); 59004e86ffSlogin } 60004e86ffSlogin } 61004e86ffSlogin 62004e86ffSlogin impl AhciDisk { 63004e86ffSlogin fn read_at( 64004e86ffSlogin &self, 65b087521eSChiichen lba_id_start: BlockId, // 起始lba编号 66004e86ffSlogin count: usize, // 读取lba的数量 67004e86ffSlogin buf: &mut [u8], 68676b8ef6SMork ) -> Result<usize, SystemError> { 697ae679ddSLoGin assert!((buf.len() & 511) == 0); 70004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 71004e86ffSlogin let check_length = ((count - 1) >> 4) + 1; // prdt length 727ae679ddSLoGin if count * 512 > buf.len() || check_length > 8 as usize { 73004e86ffSlogin kerror!("ahci read: e2big"); 74004e86ffSlogin // 不可能的操作 75676b8ef6SMork return Err(SystemError::E2BIG); 76004e86ffSlogin } else if count == 0 { 77004e86ffSlogin return Ok(0); 78004e86ffSlogin } 79004e86ffSlogin 80004e86ffSlogin let port = _port(self.ctrl_num, self.port_num); 81004e86ffSlogin volatile_write!(port.is, u32::MAX); // Clear pending interrupt bits 82004e86ffSlogin 83004e86ffSlogin let slot = port.find_cmdslot().unwrap_or(u32::MAX); 84004e86ffSlogin 85004e86ffSlogin if slot == u32::MAX { 86676b8ef6SMork return Err(SystemError::EIO); 87004e86ffSlogin } 88004e86ffSlogin 89004e86ffSlogin #[allow(unused_unsafe)] 90004e86ffSlogin let cmdheader: &mut HbaCmdHeader = unsafe { 91004e86ffSlogin (phys_2_virt( 92004e86ffSlogin volatile_read!(port.clb) as usize 93004e86ffSlogin + slot as usize * size_of::<HbaCmdHeader>() as usize, 94004e86ffSlogin ) as *mut HbaCmdHeader) 95004e86ffSlogin .as_mut() 96004e86ffSlogin .unwrap() 97004e86ffSlogin }; 98004e86ffSlogin 997ae679ddSLoGin cmdheader.cfl = (size_of::<FisRegH2D>() / size_of::<u32>()) as u8; 100004e86ffSlogin 101004e86ffSlogin volatile_set_bit!(cmdheader.cfl, 1 << 6, false); // Read/Write bit : Read from device 102004e86ffSlogin volatile_write!(cmdheader.prdtl, check_length as u16); // PRDT entries count 103004e86ffSlogin 104004e86ffSlogin // 设置数据存放地址 105004e86ffSlogin let mut buf_ptr = buf as *mut [u8] as *mut usize as usize; 106660a04ceSlogin 107660a04ceSlogin // 由于目前的内存管理机制无法把用户空间的内存地址转换为物理地址,所以只能先把数据拷贝到内核空间 108660a04ceSlogin // TODO:在内存管理重构后,可以直接使用用户空间的内存地址 109660a04ceSlogin let user_buf = if unsafe { verify_area(buf_ptr as u64, buf.len() as u64) } { 110660a04ceSlogin true 111660a04ceSlogin } else { 112660a04ceSlogin false 113660a04ceSlogin }; 114660a04ceSlogin let mut kbuf = if user_buf { 1157ae679ddSLoGin let mut x: Vec<u8> = Vec::new(); 1167ae679ddSLoGin x.resize(buf.len(), 0); 117660a04ceSlogin Some(x) 118660a04ceSlogin } else { 119660a04ceSlogin None 120660a04ceSlogin }; 121660a04ceSlogin 122660a04ceSlogin if kbuf.is_some() { 123660a04ceSlogin buf_ptr = kbuf.as_mut().unwrap().as_mut_ptr() as usize; 124660a04ceSlogin } 125660a04ceSlogin 126004e86ffSlogin #[allow(unused_unsafe)] 127004e86ffSlogin let cmdtbl = unsafe { 128004e86ffSlogin (phys_2_virt(volatile_read!(cmdheader.ctba) as usize) as *mut HbaCmdTable) 129004e86ffSlogin .as_mut() 130004e86ffSlogin .unwrap() // 必须使用 as_mut ,得到的才是原来的变量 131004e86ffSlogin }; 132004e86ffSlogin let mut tmp_count = count; 133004e86ffSlogin 134004e86ffSlogin unsafe { 135004e86ffSlogin // 清空整个table的旧数据 136004e86ffSlogin write_bytes(cmdtbl, 0, 1); 137004e86ffSlogin } 1387ae679ddSLoGin // kdebug!("cmdheader.prdtl={}", volatile_read!(cmdheader.prdtl)); 139004e86ffSlogin 140004e86ffSlogin // 8K bytes (16 sectors) per PRDT 141004e86ffSlogin for i in 0..((volatile_read!(cmdheader.prdtl) - 1) as usize) { 142004e86ffSlogin volatile_write!(cmdtbl.prdt_entry[i].dba, virt_2_phys(buf_ptr) as u64); 1437ae679ddSLoGin cmdtbl.prdt_entry[i].dbc = 8 * 1024 - 1; 144004e86ffSlogin volatile_set_bit!(cmdtbl.prdt_entry[i].dbc, 1 << 31, true); // 允许中断 prdt_entry.i 145004e86ffSlogin buf_ptr += 8 * 1024; 146004e86ffSlogin tmp_count -= 16; 147004e86ffSlogin } 148004e86ffSlogin 149004e86ffSlogin // Last entry 150004e86ffSlogin let las = (volatile_read!(cmdheader.prdtl) - 1) as usize; 151004e86ffSlogin volatile_write!(cmdtbl.prdt_entry[las].dba, virt_2_phys(buf_ptr) as u64); 1527ae679ddSLoGin cmdtbl.prdt_entry[las].dbc = ((tmp_count << 9) - 1) as u32; // 数据长度 1537ae679ddSLoGin 154004e86ffSlogin volatile_set_bit!(cmdtbl.prdt_entry[las].dbc, 1 << 31, true); // 允许中断 155004e86ffSlogin 156004e86ffSlogin // 设置命令 157004e86ffSlogin let cmdfis = unsafe { 158004e86ffSlogin ((&mut cmdtbl.cfis) as *mut [u8] as *mut usize as *mut FisRegH2D) 159004e86ffSlogin .as_mut() 160004e86ffSlogin .unwrap() 161004e86ffSlogin }; 162004e86ffSlogin volatile_write!(cmdfis.fis_type, FisType::RegH2D as u8); 163004e86ffSlogin volatile_set_bit!(cmdfis.pm, 1 << 7, true); // command_bit set 164004e86ffSlogin volatile_write!(cmdfis.command, ATA_CMD_READ_DMA_EXT); 165004e86ffSlogin 166004e86ffSlogin volatile_write!(cmdfis.lba0, (lba_id_start & 0xFF) as u8); 167004e86ffSlogin volatile_write!(cmdfis.lba1, ((lba_id_start >> 8) & 0xFF) as u8); 168004e86ffSlogin volatile_write!(cmdfis.lba2, ((lba_id_start >> 16) & 0xFF) as u8); 169004e86ffSlogin volatile_write!(cmdfis.lba3, ((lba_id_start >> 24) & 0xFF) as u8); 170004e86ffSlogin volatile_write!(cmdfis.lba4, ((lba_id_start >> 32) & 0xFF) as u8); 171004e86ffSlogin volatile_write!(cmdfis.lba5, ((lba_id_start >> 40) & 0xFF) as u8); 172004e86ffSlogin 173004e86ffSlogin volatile_write!(cmdfis.countl, (count & 0xFF) as u8); 174004e86ffSlogin volatile_write!(cmdfis.counth, ((count >> 8) & 0xFF) as u8); 175004e86ffSlogin 176004e86ffSlogin volatile_write!(cmdfis.device, 1 << 6); // LBA Mode 177004e86ffSlogin 178004e86ffSlogin // 等待之前的操作完成 179004e86ffSlogin let mut spin_count = 0; 180004e86ffSlogin const SPIN_LIMIT: u32 = 10000; 181004e86ffSlogin 182004e86ffSlogin while (volatile_read!(port.tfd) as u8 & (ATA_DEV_BUSY | ATA_DEV_DRQ)) > 0 183004e86ffSlogin && spin_count < SPIN_LIMIT 184004e86ffSlogin { 185004e86ffSlogin spin_count += 1; 186004e86ffSlogin } 187004e86ffSlogin 188004e86ffSlogin if spin_count == SPIN_LIMIT { 189004e86ffSlogin kerror!("Port is hung"); 190676b8ef6SMork return Err(SystemError::EIO); 191004e86ffSlogin } 192004e86ffSlogin 193004e86ffSlogin volatile_set_bit!(port.ci, 1 << slot, true); // Issue command 194004e86ffSlogin // kdebug!("To wait ahci read complete."); 195004e86ffSlogin // 等待操作完成 196004e86ffSlogin loop { 197004e86ffSlogin if (volatile_read!(port.ci) & (1 << slot)) == 0 { 198004e86ffSlogin break; 199004e86ffSlogin } 200004e86ffSlogin if (volatile_read!(port.is) & HBA_PxIS_TFES) > 0 { 201004e86ffSlogin kerror!("Read disk error"); 202676b8ef6SMork return Err(SystemError::EIO); 203004e86ffSlogin } 204004e86ffSlogin } 205004e86ffSlogin 206660a04ceSlogin if kbuf.is_some() { 207660a04ceSlogin buf.copy_from_slice(kbuf.as_ref().unwrap()); 208660a04ceSlogin } 209660a04ceSlogin 210004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 211004e86ffSlogin // successfully read 212004e86ffSlogin return Ok(count * 512); 213004e86ffSlogin } 214004e86ffSlogin 215004e86ffSlogin fn write_at( 216004e86ffSlogin &self, 217b087521eSChiichen lba_id_start: BlockId, 218004e86ffSlogin count: usize, 219004e86ffSlogin buf: &[u8], 220676b8ef6SMork ) -> Result<usize, SystemError> { 2217ae679ddSLoGin assert!((buf.len() & 511) == 0); 222004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 223004e86ffSlogin let check_length = ((count - 1) >> 4) + 1; // prdt length 2247ae679ddSLoGin if count * 512 > buf.len() || check_length > 8 as usize { 225004e86ffSlogin // 不可能的操作 226676b8ef6SMork return Err(SystemError::E2BIG); 227004e86ffSlogin } else if count == 0 { 228004e86ffSlogin return Ok(0); 229004e86ffSlogin } 230004e86ffSlogin 231004e86ffSlogin let port = _port(self.ctrl_num, self.port_num); 232004e86ffSlogin 233004e86ffSlogin volatile_write!(port.is, u32::MAX); // Clear pending interrupt bits 234004e86ffSlogin 235004e86ffSlogin let slot = port.find_cmdslot().unwrap_or(u32::MAX); 236004e86ffSlogin 237004e86ffSlogin if slot == u32::MAX { 238676b8ef6SMork return Err(SystemError::EIO); 239004e86ffSlogin } 240004e86ffSlogin 241004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 242004e86ffSlogin #[allow(unused_unsafe)] 243004e86ffSlogin let cmdheader: &mut HbaCmdHeader = unsafe { 244004e86ffSlogin (phys_2_virt( 245004e86ffSlogin volatile_read!(port.clb) as usize 246004e86ffSlogin + slot as usize * size_of::<HbaCmdHeader>() as usize, 247004e86ffSlogin ) as *mut HbaCmdHeader) 248004e86ffSlogin .as_mut() 249004e86ffSlogin .unwrap() 250004e86ffSlogin }; 251004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 252004e86ffSlogin 253004e86ffSlogin volatile_write_bit!( 254004e86ffSlogin cmdheader.cfl, 255004e86ffSlogin (1 << 5) - 1 as u8, 256004e86ffSlogin (size_of::<FisRegH2D>() / size_of::<u32>()) as u8 257004e86ffSlogin ); // Command FIS size 258004e86ffSlogin 259004e86ffSlogin volatile_set_bit!(cmdheader.cfl, 7 << 5, true); // (p,c,w)都设置为1, Read/Write bit : Write from device 260004e86ffSlogin volatile_write!(cmdheader.prdtl, check_length as u16); // PRDT entries count 261004e86ffSlogin 262004e86ffSlogin // 设置数据存放地址 263004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 264004e86ffSlogin let mut buf_ptr = buf as *const [u8] as *mut usize as usize; 265660a04ceSlogin 266660a04ceSlogin // 由于目前的内存管理机制无法把用户空间的内存地址转换为物理地址,所以只能先把数据拷贝到内核空间 267660a04ceSlogin // TODO:在内存管理重构后,可以直接使用用户空间的内存地址 268660a04ceSlogin let user_buf = if unsafe { verify_area(buf_ptr as u64, buf.len() as u64) } { 269660a04ceSlogin true 270660a04ceSlogin } else { 271660a04ceSlogin false 272660a04ceSlogin }; 273660a04ceSlogin let mut kbuf = if user_buf { 274660a04ceSlogin let mut x: Vec<u8> = Vec::with_capacity(buf.len()); 275660a04ceSlogin x.resize(buf.len(), 0); 276660a04ceSlogin x.copy_from_slice(buf); 277660a04ceSlogin Some(x) 278660a04ceSlogin } else { 279660a04ceSlogin None 280660a04ceSlogin }; 281660a04ceSlogin 282660a04ceSlogin if kbuf.is_some() { 283660a04ceSlogin buf_ptr = kbuf.as_mut().unwrap().as_mut_ptr() as usize; 284660a04ceSlogin } 285660a04ceSlogin 286004e86ffSlogin #[allow(unused_unsafe)] 287004e86ffSlogin let cmdtbl = unsafe { 288004e86ffSlogin (phys_2_virt(volatile_read!(cmdheader.ctba) as usize) as *mut HbaCmdTable) 289004e86ffSlogin .as_mut() 290004e86ffSlogin .unwrap() 291004e86ffSlogin }; 292004e86ffSlogin let mut tmp_count = count; 293004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 294004e86ffSlogin 295004e86ffSlogin unsafe { 296004e86ffSlogin // 清空整个table的旧数据 297004e86ffSlogin write_bytes(cmdtbl, 0, 1); 298004e86ffSlogin } 299004e86ffSlogin 300004e86ffSlogin // 8K bytes (16 sectors) per PRDT 301004e86ffSlogin for i in 0..((volatile_read!(cmdheader.prdtl) - 1) as usize) { 302004e86ffSlogin volatile_write!(cmdtbl.prdt_entry[i].dba, virt_2_phys(buf_ptr) as u64); 303004e86ffSlogin volatile_write_bit!(cmdtbl.prdt_entry[i].dbc, (1 << 22) - 1, 8 * 1024 - 1); // 数据长度 304004e86ffSlogin volatile_set_bit!(cmdtbl.prdt_entry[i].dbc, 1 << 31, true); // 允许中断 305004e86ffSlogin buf_ptr += 8 * 1024; 306004e86ffSlogin tmp_count -= 16; 307004e86ffSlogin } 308004e86ffSlogin 309004e86ffSlogin // Last entry 310004e86ffSlogin let las = (volatile_read!(cmdheader.prdtl) - 1) as usize; 311004e86ffSlogin volatile_write!(cmdtbl.prdt_entry[las].dba, virt_2_phys(buf_ptr) as u64); 312004e86ffSlogin volatile_set_bit!(cmdtbl.prdt_entry[las].dbc, 1 << 31, true); // 允许中断 313004e86ffSlogin volatile_write_bit!( 314004e86ffSlogin cmdtbl.prdt_entry[las].dbc, 315004e86ffSlogin (1 << 22) - 1, 316004e86ffSlogin ((tmp_count << 9) - 1) as u32 317004e86ffSlogin ); // 数据长度 318004e86ffSlogin 319004e86ffSlogin // 设置命令 320004e86ffSlogin let cmdfis = unsafe { 321004e86ffSlogin ((&mut cmdtbl.cfis) as *mut [u8] as *mut usize as *mut FisRegH2D) 322004e86ffSlogin .as_mut() 323004e86ffSlogin .unwrap() 324004e86ffSlogin }; 325004e86ffSlogin volatile_write!(cmdfis.fis_type, FisType::RegH2D as u8); 326004e86ffSlogin volatile_set_bit!(cmdfis.pm, 1 << 7, true); // command_bit set 327004e86ffSlogin volatile_write!(cmdfis.command, ATA_CMD_WRITE_DMA_EXT); 328004e86ffSlogin 329004e86ffSlogin volatile_write!(cmdfis.lba0, (lba_id_start & 0xFF) as u8); 330004e86ffSlogin volatile_write!(cmdfis.lba1, ((lba_id_start >> 8) & 0xFF) as u8); 331004e86ffSlogin volatile_write!(cmdfis.lba2, ((lba_id_start >> 16) & 0xFF) as u8); 332004e86ffSlogin volatile_write!(cmdfis.lba3, ((lba_id_start >> 24) & 0xFF) as u8); 333004e86ffSlogin volatile_write!(cmdfis.lba4, ((lba_id_start >> 32) & 0xFF) as u8); 334004e86ffSlogin volatile_write!(cmdfis.lba5, ((lba_id_start >> 40) & 0xFF) as u8); 335004e86ffSlogin 336004e86ffSlogin volatile_write!(cmdfis.countl, (count & 0xFF) as u8); 337004e86ffSlogin volatile_write!(cmdfis.counth, ((count >> 8) & 0xFF) as u8); 338004e86ffSlogin 339004e86ffSlogin volatile_write!(cmdfis.device, 1 << 6); // LBA Mode 340004e86ffSlogin 341004e86ffSlogin volatile_set_bit!(port.ci, 1 << slot, true); // Issue command 342004e86ffSlogin 343004e86ffSlogin // 等待操作完成 344004e86ffSlogin loop { 345004e86ffSlogin if (volatile_read!(port.ci) & (1 << slot)) == 0 { 346004e86ffSlogin break; 347004e86ffSlogin } 348004e86ffSlogin if (volatile_read!(port.is) & HBA_PxIS_TFES) > 0 { 349004e86ffSlogin kerror!("Write disk error"); 350676b8ef6SMork return Err(SystemError::EIO); 351004e86ffSlogin } 352004e86ffSlogin } 353004e86ffSlogin 354004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 355004e86ffSlogin // successfully read 356004e86ffSlogin return Ok(count * 512); 357004e86ffSlogin } 358004e86ffSlogin 359676b8ef6SMork fn sync(&self) -> Result<(), SystemError> { 360004e86ffSlogin // 由于目前没有block cache, 因此sync返回成功即可 361004e86ffSlogin return Ok(()); 362004e86ffSlogin } 363004e86ffSlogin } 364004e86ffSlogin 365004e86ffSlogin impl LockedAhciDisk { 366004e86ffSlogin pub fn new( 367004e86ffSlogin name: String, 368004e86ffSlogin flags: u16, 369004e86ffSlogin ctrl_num: u8, 370004e86ffSlogin port_num: u8, 371676b8ef6SMork ) -> Result<Arc<LockedAhciDisk>, SystemError> { 372004e86ffSlogin // 构建磁盘结构体 373004e86ffSlogin let result: Arc<LockedAhciDisk> = Arc::new(LockedAhciDisk(SpinLock::new(AhciDisk { 374004e86ffSlogin name, 375004e86ffSlogin flags, 376004e86ffSlogin partitions: Default::default(), 377004e86ffSlogin ctrl_num, 378004e86ffSlogin port_num, 379004e86ffSlogin self_ref: Weak::default(), 380004e86ffSlogin }))); 381004e86ffSlogin 382004e86ffSlogin let table: MbrDiskPartionTable = result.read_mbr_table()?; 383004e86ffSlogin 384004e86ffSlogin // 求出有多少可用分区 385004e86ffSlogin for i in 0..4 { 3867ae679ddSLoGin compiler_fence(Ordering::SeqCst); 387004e86ffSlogin if table.dpte[i].part_type != 0 { 3887ae679ddSLoGin let w = Arc::downgrade(&result); 3897ae679ddSLoGin result.0.lock().partitions.push(Partition::new( 390004e86ffSlogin table.dpte[i].starting_sector() as u64, 391004e86ffSlogin table.dpte[i].starting_lba as u64, 392004e86ffSlogin table.dpte[i].total_sectors as u64, 3937ae679ddSLoGin w, 394004e86ffSlogin i as u16, 395004e86ffSlogin )); 396004e86ffSlogin } 397004e86ffSlogin } 3987ae679ddSLoGin 3997ae679ddSLoGin result.0.lock().self_ref = Arc::downgrade(&result); 4007ae679ddSLoGin 401004e86ffSlogin return Ok(result); 402004e86ffSlogin } 403004e86ffSlogin 404004e86ffSlogin /// @brief: 从磁盘中读取 MBR 分区表结构体 TODO: Cursor 405676b8ef6SMork pub fn read_mbr_table(&self) -> Result<MbrDiskPartionTable, SystemError> { 406004e86ffSlogin let mut table: MbrDiskPartionTable = Default::default(); 407004e86ffSlogin 408004e86ffSlogin // 数据缓冲区 409004e86ffSlogin let mut buf: Vec<u8> = Vec::new(); 410004e86ffSlogin buf.resize(size_of::<MbrDiskPartionTable>(), 0); 411004e86ffSlogin 4127ae679ddSLoGin self.read_at(0, 1, &mut buf)?; 413004e86ffSlogin // 创建 Cursor 用于按字节读取 414004e86ffSlogin let mut cursor = VecCursor::new(buf); 415004e86ffSlogin cursor.seek(SeekFrom::SeekCurrent(446))?; 416004e86ffSlogin 417004e86ffSlogin for i in 0..4 { 418b087521eSChiichen kdebug!("infomation of partition {}:\n", i); 419004e86ffSlogin 420004e86ffSlogin table.dpte[i].flags = cursor.read_u8()?; 421004e86ffSlogin table.dpte[i].starting_head = cursor.read_u8()?; 422004e86ffSlogin table.dpte[i].starting_sector_cylinder = cursor.read_u16()?; 423004e86ffSlogin table.dpte[i].part_type = cursor.read_u8()?; 424004e86ffSlogin table.dpte[i].ending_head = cursor.read_u8()?; 425004e86ffSlogin table.dpte[i].ending_sector_cylingder = cursor.read_u16()?; 426004e86ffSlogin table.dpte[i].starting_lba = cursor.read_u32()?; 427004e86ffSlogin table.dpte[i].total_sectors = cursor.read_u32()?; 428004e86ffSlogin 429b087521eSChiichen kdebug!("dpte[i] = {:?}", table.dpte[i]); 430004e86ffSlogin } 431004e86ffSlogin table.bs_trailsig = cursor.read_u16()?; 432004e86ffSlogin // kdebug!("bs_trailsig = {}", unsafe { 433004e86ffSlogin // read_unaligned(addr_of!(table.bs_trailsig)) 434004e86ffSlogin // }); 435004e86ffSlogin 436004e86ffSlogin return Ok(table); 437004e86ffSlogin } 438004e86ffSlogin } 439004e86ffSlogin 440*06d5e247SLoGin impl KObject for LockedAhciDisk { 441*06d5e247SLoGin fn as_any_ref(&self) -> &dyn core::any::Any { 442*06d5e247SLoGin self 443*06d5e247SLoGin } 444*06d5e247SLoGin 445*06d5e247SLoGin fn inode(&self) -> Option<Arc<KernFSInode>> { 446*06d5e247SLoGin todo!() 447*06d5e247SLoGin } 448*06d5e247SLoGin 449*06d5e247SLoGin fn kobj_type(&self) -> Option<&'static dyn KObjType> { 450*06d5e247SLoGin todo!() 451*06d5e247SLoGin } 452*06d5e247SLoGin 453*06d5e247SLoGin fn kset(&self) -> Option<Arc<KSet>> { 454*06d5e247SLoGin todo!() 455*06d5e247SLoGin } 456*06d5e247SLoGin 457*06d5e247SLoGin fn parent(&self) -> Option<Weak<dyn KObject>> { 458*06d5e247SLoGin todo!() 459*06d5e247SLoGin } 460*06d5e247SLoGin 461*06d5e247SLoGin fn set_inode(&self, _inode: Option<Arc<KernFSInode>>) { 462*06d5e247SLoGin todo!() 463*06d5e247SLoGin } 464*06d5e247SLoGin 465*06d5e247SLoGin fn kobj_state(&self) -> RwLockReadGuard<KObjectState> { 466*06d5e247SLoGin todo!() 467*06d5e247SLoGin } 468*06d5e247SLoGin 469*06d5e247SLoGin fn kobj_state_mut(&self) -> RwLockWriteGuard<KObjectState> { 470*06d5e247SLoGin todo!() 471*06d5e247SLoGin } 472*06d5e247SLoGin 473*06d5e247SLoGin fn set_kobj_state(&self, _state: KObjectState) { 474*06d5e247SLoGin todo!() 475*06d5e247SLoGin } 476*06d5e247SLoGin 477*06d5e247SLoGin fn name(&self) -> alloc::string::String { 478*06d5e247SLoGin todo!() 479*06d5e247SLoGin } 480*06d5e247SLoGin 481*06d5e247SLoGin fn set_name(&self, _name: alloc::string::String) { 482*06d5e247SLoGin todo!() 483*06d5e247SLoGin } 484*06d5e247SLoGin 485*06d5e247SLoGin fn set_kset(&self, _kset: Option<Arc<KSet>>) { 486*06d5e247SLoGin todo!() 487*06d5e247SLoGin } 488*06d5e247SLoGin 489*06d5e247SLoGin fn set_parent(&self, _parent: Option<Weak<dyn KObject>>) { 490*06d5e247SLoGin todo!() 491*06d5e247SLoGin } 492*06d5e247SLoGin } 493b087521eSChiichen 494b087521eSChiichen impl Device for LockedAhciDisk { 495b087521eSChiichen fn dev_type(&self) -> DeviceType { 496b087521eSChiichen return DeviceType::Block; 497b087521eSChiichen } 498b087521eSChiichen 499*06d5e247SLoGin fn id_table(&self) -> IdTable { 500b087521eSChiichen todo!() 501b087521eSChiichen } 502b087521eSChiichen 503*06d5e247SLoGin fn bus(&self) -> Option<Arc<dyn Bus>> { 504*06d5e247SLoGin todo!("LockedAhciDisk::bus()") 505b087521eSChiichen } 506b087521eSChiichen 507*06d5e247SLoGin fn driver(&self) -> Option<Arc<dyn Driver>> { 508*06d5e247SLoGin todo!("LockedAhciDisk::driver()") 509*06d5e247SLoGin } 510*06d5e247SLoGin 511*06d5e247SLoGin fn is_dead(&self) -> bool { 512*06d5e247SLoGin false 513*06d5e247SLoGin } 514*06d5e247SLoGin 515*06d5e247SLoGin fn set_driver(&self, _driver: Option<Arc<dyn Driver>>) { 516*06d5e247SLoGin todo!("LockedAhciDisk::set_driver()") 517b087521eSChiichen } 518b087521eSChiichen } 519b087521eSChiichen 520004e86ffSlogin impl BlockDevice for LockedAhciDisk { 521004e86ffSlogin #[inline] 522004e86ffSlogin fn as_any_ref(&self) -> &dyn core::any::Any { 523004e86ffSlogin self 524004e86ffSlogin } 525004e86ffSlogin 526004e86ffSlogin #[inline] 527004e86ffSlogin fn blk_size_log2(&self) -> u8 { 528004e86ffSlogin 9 529004e86ffSlogin } 530004e86ffSlogin 531676b8ef6SMork fn sync(&self) -> Result<(), SystemError> { 532004e86ffSlogin return self.0.lock().sync(); 533004e86ffSlogin } 534004e86ffSlogin 535004e86ffSlogin #[inline] 536b087521eSChiichen fn device(&self) -> Arc<dyn Device> { 537004e86ffSlogin return self.0.lock().self_ref.upgrade().unwrap(); 538004e86ffSlogin } 539004e86ffSlogin 540004e86ffSlogin fn block_size(&self) -> usize { 541004e86ffSlogin todo!() 542004e86ffSlogin } 543004e86ffSlogin 544004e86ffSlogin fn partitions(&self) -> Vec<Arc<Partition>> { 545004e86ffSlogin return self.0.lock().partitions.clone(); 546004e86ffSlogin } 547b087521eSChiichen 548b087521eSChiichen #[inline] 549b087521eSChiichen fn read_at( 550b087521eSChiichen &self, 551b087521eSChiichen lba_id_start: BlockId, // 起始lba编号 552b087521eSChiichen count: usize, // 读取lba的数量 553b087521eSChiichen buf: &mut [u8], 554b087521eSChiichen ) -> Result<usize, SystemError> { 555b087521eSChiichen self.0.lock().read_at(lba_id_start, count, buf) 556b087521eSChiichen } 557b087521eSChiichen 558b087521eSChiichen #[inline] 559b087521eSChiichen fn write_at( 560b087521eSChiichen &self, 561b087521eSChiichen lba_id_start: BlockId, 562b087521eSChiichen count: usize, 563b087521eSChiichen buf: &[u8], 564b087521eSChiichen ) -> Result<usize, SystemError> { 565b087521eSChiichen self.0.lock().write_at(lba_id_start, count, buf) 566b087521eSChiichen } 567004e86ffSlogin } 568