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; 506d5e247SLoGin use crate::driver::base::device::bus::Bus; 6*ad1d649eSGnoCiYeH 7a03c4f9dSLoGin use crate::driver::base::device::driver::Driver; 806d5e247SLoGin use crate::driver::base::device::{Device, DeviceType, IdTable}; 906d5e247SLoGin use crate::driver::base::kobject::{KObjType, KObject, KObjectState}; 1006d5e247SLoGin use crate::driver::base::kset::KSet; 11004e86ffSlogin use crate::driver::disk::ahci::HBA_PxIS_TFES; 12a03c4f9dSLoGin 1306d5e247SLoGin use crate::filesystem::kernfs::KernFSInode; 14004e86ffSlogin use crate::filesystem::mbr::MbrDiskPartionTable; 15660a04ceSlogin use crate::include::bindings::bindings::verify_area; 16004e86ffSlogin 17b087521eSChiichen use crate::kdebug; 1806d5e247SLoGin use crate::libs::rwlock::{RwLockReadGuard, RwLockWriteGuard}; 19004e86ffSlogin use crate::libs::{spinlock::SpinLock, vec_cursor::VecCursor}; 20004e86ffSlogin use crate::mm::phys_2_virt; 21676b8ef6SMork use crate::syscall::SystemError; 22004e86ffSlogin use crate::{ 23004e86ffSlogin driver::disk::ahci::hba::{ 24004e86ffSlogin FisRegH2D, FisType, HbaCmdHeader, ATA_CMD_READ_DMA_EXT, ATA_CMD_WRITE_DMA_EXT, 25004e86ffSlogin ATA_DEV_BUSY, ATA_DEV_DRQ, 26004e86ffSlogin }, 27004e86ffSlogin kerror, 28004e86ffSlogin }; 29004e86ffSlogin 30004e86ffSlogin use alloc::sync::Weak; 31004e86ffSlogin use alloc::{string::String, sync::Arc, vec::Vec}; 32004e86ffSlogin 33004e86ffSlogin use core::fmt::Debug; 347ae679ddSLoGin use core::sync::atomic::{compiler_fence, Ordering}; 35004e86ffSlogin use core::{mem::size_of, ptr::write_bytes}; 36004e86ffSlogin 37004e86ffSlogin /// @brief: 只支持MBR分区格式的磁盘结构体 38004e86ffSlogin pub struct AhciDisk { 39004e86ffSlogin pub name: String, 40004e86ffSlogin pub flags: u16, // 磁盘的状态flags 41004e86ffSlogin pub partitions: Vec<Arc<Partition>>, // 磁盘分区数组 42004e86ffSlogin // port: &'static mut HbaPort, // 控制硬盘的端口 43004e86ffSlogin pub ctrl_num: u8, 44004e86ffSlogin pub port_num: u8, 45004e86ffSlogin /// 指向LockAhciDisk的弱引用 46004e86ffSlogin self_ref: Weak<LockedAhciDisk>, 47004e86ffSlogin } 48004e86ffSlogin 49004e86ffSlogin /// @brief: 带锁的AhciDisk 50004e86ffSlogin #[derive(Debug)] 51004e86ffSlogin pub struct LockedAhciDisk(pub SpinLock<AhciDisk>); 52004e86ffSlogin /// 函数实现 53004e86ffSlogin impl Debug for AhciDisk { 54004e86ffSlogin fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { 55004e86ffSlogin write!( 56004e86ffSlogin f, 57004e86ffSlogin "{{ name: {}, flags: {}, part_s: {:?} }}", 58004e86ffSlogin self.name, self.flags, self.partitions 59004e86ffSlogin )?; 60004e86ffSlogin return Ok(()); 61004e86ffSlogin } 62004e86ffSlogin } 63004e86ffSlogin 64004e86ffSlogin impl AhciDisk { 65004e86ffSlogin fn read_at( 66004e86ffSlogin &self, 67b087521eSChiichen lba_id_start: BlockId, // 起始lba编号 68004e86ffSlogin count: usize, // 读取lba的数量 69004e86ffSlogin buf: &mut [u8], 70676b8ef6SMork ) -> Result<usize, SystemError> { 717ae679ddSLoGin assert!((buf.len() & 511) == 0); 72004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 73004e86ffSlogin let check_length = ((count - 1) >> 4) + 1; // prdt length 747ae679ddSLoGin if count * 512 > buf.len() || check_length > 8 as usize { 75004e86ffSlogin kerror!("ahci read: e2big"); 76004e86ffSlogin // 不可能的操作 77676b8ef6SMork return Err(SystemError::E2BIG); 78004e86ffSlogin } else if count == 0 { 79004e86ffSlogin return Ok(0); 80004e86ffSlogin } 81004e86ffSlogin 82004e86ffSlogin let port = _port(self.ctrl_num, self.port_num); 83004e86ffSlogin volatile_write!(port.is, u32::MAX); // Clear pending interrupt bits 84004e86ffSlogin 85004e86ffSlogin let slot = port.find_cmdslot().unwrap_or(u32::MAX); 86004e86ffSlogin 87004e86ffSlogin if slot == u32::MAX { 88676b8ef6SMork return Err(SystemError::EIO); 89004e86ffSlogin } 90004e86ffSlogin 91004e86ffSlogin #[allow(unused_unsafe)] 92004e86ffSlogin let cmdheader: &mut HbaCmdHeader = unsafe { 93004e86ffSlogin (phys_2_virt( 94004e86ffSlogin volatile_read!(port.clb) as usize 95004e86ffSlogin + slot as usize * size_of::<HbaCmdHeader>() as usize, 96004e86ffSlogin ) as *mut HbaCmdHeader) 97004e86ffSlogin .as_mut() 98004e86ffSlogin .unwrap() 99004e86ffSlogin }; 100004e86ffSlogin 1017ae679ddSLoGin cmdheader.cfl = (size_of::<FisRegH2D>() / size_of::<u32>()) as u8; 102004e86ffSlogin 103004e86ffSlogin volatile_set_bit!(cmdheader.cfl, 1 << 6, false); // Read/Write bit : Read from device 104004e86ffSlogin volatile_write!(cmdheader.prdtl, check_length as u16); // PRDT entries count 105004e86ffSlogin 106004e86ffSlogin // 设置数据存放地址 107004e86ffSlogin let mut buf_ptr = buf as *mut [u8] as *mut usize as usize; 108660a04ceSlogin 109660a04ceSlogin // 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 110660a04ceSlogin // TODO:在内存管理重构后,可以直接使用用户空间的内存地址 111660a04ceSlogin let user_buf = if unsafe { verify_area(buf_ptr as u64, buf.len() as u64) } { 112660a04ceSlogin true 113660a04ceSlogin } else { 114660a04ceSlogin false 115660a04ceSlogin }; 116660a04ceSlogin let mut kbuf = if user_buf { 1177ae679ddSLoGin let mut x: Vec<u8> = Vec::new(); 1187ae679ddSLoGin x.resize(buf.len(), 0); 119660a04ceSlogin Some(x) 120660a04ceSlogin } else { 121660a04ceSlogin None 122660a04ceSlogin }; 123660a04ceSlogin 124660a04ceSlogin if kbuf.is_some() { 125660a04ceSlogin buf_ptr = kbuf.as_mut().unwrap().as_mut_ptr() as usize; 126660a04ceSlogin } 127660a04ceSlogin 128004e86ffSlogin #[allow(unused_unsafe)] 129004e86ffSlogin let cmdtbl = unsafe { 130004e86ffSlogin (phys_2_virt(volatile_read!(cmdheader.ctba) as usize) as *mut HbaCmdTable) 131004e86ffSlogin .as_mut() 132004e86ffSlogin .unwrap() // 必须使用 as_mut ,得到的才是原来的变量 133004e86ffSlogin }; 134004e86ffSlogin let mut tmp_count = count; 135004e86ffSlogin 136004e86ffSlogin unsafe { 137004e86ffSlogin // 清空整个table的旧数据 138004e86ffSlogin write_bytes(cmdtbl, 0, 1); 139004e86ffSlogin } 1407ae679ddSLoGin // kdebug!("cmdheader.prdtl={}", volatile_read!(cmdheader.prdtl)); 141004e86ffSlogin 142004e86ffSlogin // 8K bytes (16 sectors) per PRDT 143004e86ffSlogin for i in 0..((volatile_read!(cmdheader.prdtl) - 1) as usize) { 144004e86ffSlogin volatile_write!(cmdtbl.prdt_entry[i].dba, virt_2_phys(buf_ptr) as u64); 1457ae679ddSLoGin cmdtbl.prdt_entry[i].dbc = 8 * 1024 - 1; 146004e86ffSlogin volatile_set_bit!(cmdtbl.prdt_entry[i].dbc, 1 << 31, true); // 允许中断 prdt_entry.i 147004e86ffSlogin buf_ptr += 8 * 1024; 148004e86ffSlogin tmp_count -= 16; 149004e86ffSlogin } 150004e86ffSlogin 151004e86ffSlogin // Last entry 152004e86ffSlogin let las = (volatile_read!(cmdheader.prdtl) - 1) as usize; 153004e86ffSlogin volatile_write!(cmdtbl.prdt_entry[las].dba, virt_2_phys(buf_ptr) as u64); 1547ae679ddSLoGin cmdtbl.prdt_entry[las].dbc = ((tmp_count << 9) - 1) as u32; // 数据长度 1557ae679ddSLoGin 156004e86ffSlogin volatile_set_bit!(cmdtbl.prdt_entry[las].dbc, 1 << 31, true); // 允许中断 157004e86ffSlogin 158004e86ffSlogin // 设置命令 159004e86ffSlogin let cmdfis = unsafe { 160004e86ffSlogin ((&mut cmdtbl.cfis) as *mut [u8] as *mut usize as *mut FisRegH2D) 161004e86ffSlogin .as_mut() 162004e86ffSlogin .unwrap() 163004e86ffSlogin }; 164004e86ffSlogin volatile_write!(cmdfis.fis_type, FisType::RegH2D as u8); 165004e86ffSlogin volatile_set_bit!(cmdfis.pm, 1 << 7, true); // command_bit set 166004e86ffSlogin volatile_write!(cmdfis.command, ATA_CMD_READ_DMA_EXT); 167004e86ffSlogin 168004e86ffSlogin volatile_write!(cmdfis.lba0, (lba_id_start & 0xFF) as u8); 169004e86ffSlogin volatile_write!(cmdfis.lba1, ((lba_id_start >> 8) & 0xFF) as u8); 170004e86ffSlogin volatile_write!(cmdfis.lba2, ((lba_id_start >> 16) & 0xFF) as u8); 171004e86ffSlogin volatile_write!(cmdfis.lba3, ((lba_id_start >> 24) & 0xFF) as u8); 172004e86ffSlogin volatile_write!(cmdfis.lba4, ((lba_id_start >> 32) & 0xFF) as u8); 173004e86ffSlogin volatile_write!(cmdfis.lba5, ((lba_id_start >> 40) & 0xFF) as u8); 174004e86ffSlogin 175004e86ffSlogin volatile_write!(cmdfis.countl, (count & 0xFF) as u8); 176004e86ffSlogin volatile_write!(cmdfis.counth, ((count >> 8) & 0xFF) as u8); 177004e86ffSlogin 178004e86ffSlogin volatile_write!(cmdfis.device, 1 << 6); // LBA Mode 179004e86ffSlogin 180004e86ffSlogin // 等待之前的操作完成 181004e86ffSlogin let mut spin_count = 0; 182004e86ffSlogin const SPIN_LIMIT: u32 = 10000; 183004e86ffSlogin 184004e86ffSlogin while (volatile_read!(port.tfd) as u8 & (ATA_DEV_BUSY | ATA_DEV_DRQ)) > 0 185004e86ffSlogin && spin_count < SPIN_LIMIT 186004e86ffSlogin { 187004e86ffSlogin spin_count += 1; 188004e86ffSlogin } 189004e86ffSlogin 190004e86ffSlogin if spin_count == SPIN_LIMIT { 191004e86ffSlogin kerror!("Port is hung"); 192676b8ef6SMork return Err(SystemError::EIO); 193004e86ffSlogin } 194004e86ffSlogin 195004e86ffSlogin volatile_set_bit!(port.ci, 1 << slot, true); // Issue command 196004e86ffSlogin // kdebug!("To wait ahci read complete."); 197004e86ffSlogin // 等待操作完成 198004e86ffSlogin loop { 199004e86ffSlogin if (volatile_read!(port.ci) & (1 << slot)) == 0 { 200004e86ffSlogin break; 201004e86ffSlogin } 202004e86ffSlogin if (volatile_read!(port.is) & HBA_PxIS_TFES) > 0 { 203004e86ffSlogin kerror!("Read disk error"); 204676b8ef6SMork return Err(SystemError::EIO); 205004e86ffSlogin } 206004e86ffSlogin } 207004e86ffSlogin 208660a04ceSlogin if kbuf.is_some() { 209660a04ceSlogin buf.copy_from_slice(kbuf.as_ref().unwrap()); 210660a04ceSlogin } 211660a04ceSlogin 212004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 213004e86ffSlogin // successfully read 214004e86ffSlogin return Ok(count * 512); 215004e86ffSlogin } 216004e86ffSlogin 217004e86ffSlogin fn write_at( 218004e86ffSlogin &self, 219b087521eSChiichen lba_id_start: BlockId, 220004e86ffSlogin count: usize, 221004e86ffSlogin buf: &[u8], 222676b8ef6SMork ) -> Result<usize, SystemError> { 2237ae679ddSLoGin assert!((buf.len() & 511) == 0); 224004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 225004e86ffSlogin let check_length = ((count - 1) >> 4) + 1; // prdt length 2267ae679ddSLoGin if count * 512 > buf.len() || check_length > 8 as usize { 227004e86ffSlogin // 不可能的操作 228676b8ef6SMork return Err(SystemError::E2BIG); 229004e86ffSlogin } else if count == 0 { 230004e86ffSlogin return Ok(0); 231004e86ffSlogin } 232004e86ffSlogin 233004e86ffSlogin let port = _port(self.ctrl_num, self.port_num); 234004e86ffSlogin 235004e86ffSlogin volatile_write!(port.is, u32::MAX); // Clear pending interrupt bits 236004e86ffSlogin 237004e86ffSlogin let slot = port.find_cmdslot().unwrap_or(u32::MAX); 238004e86ffSlogin 239004e86ffSlogin if slot == u32::MAX { 240676b8ef6SMork return Err(SystemError::EIO); 241004e86ffSlogin } 242004e86ffSlogin 243004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 244004e86ffSlogin #[allow(unused_unsafe)] 245004e86ffSlogin let cmdheader: &mut HbaCmdHeader = unsafe { 246004e86ffSlogin (phys_2_virt( 247004e86ffSlogin volatile_read!(port.clb) as usize 248004e86ffSlogin + slot as usize * size_of::<HbaCmdHeader>() as usize, 249004e86ffSlogin ) as *mut HbaCmdHeader) 250004e86ffSlogin .as_mut() 251004e86ffSlogin .unwrap() 252004e86ffSlogin }; 253004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 254004e86ffSlogin 255004e86ffSlogin volatile_write_bit!( 256004e86ffSlogin cmdheader.cfl, 257004e86ffSlogin (1 << 5) - 1 as u8, 258004e86ffSlogin (size_of::<FisRegH2D>() / size_of::<u32>()) as u8 259004e86ffSlogin ); // Command FIS size 260004e86ffSlogin 261004e86ffSlogin volatile_set_bit!(cmdheader.cfl, 7 << 5, true); // (p,c,w)都设置为1, Read/Write bit : Write from device 262004e86ffSlogin volatile_write!(cmdheader.prdtl, check_length as u16); // PRDT entries count 263004e86ffSlogin 264004e86ffSlogin // 设置数据存放地址 265004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 266004e86ffSlogin let mut buf_ptr = buf as *const [u8] as *mut usize as usize; 267660a04ceSlogin 268660a04ceSlogin // 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 269660a04ceSlogin // TODO:在内存管理重构后,可以直接使用用户空间的内存地址 270660a04ceSlogin let user_buf = if unsafe { verify_area(buf_ptr as u64, buf.len() as u64) } { 271660a04ceSlogin true 272660a04ceSlogin } else { 273660a04ceSlogin false 274660a04ceSlogin }; 275660a04ceSlogin let mut kbuf = if user_buf { 276660a04ceSlogin let mut x: Vec<u8> = Vec::with_capacity(buf.len()); 277660a04ceSlogin x.resize(buf.len(), 0); 278660a04ceSlogin x.copy_from_slice(buf); 279660a04ceSlogin Some(x) 280660a04ceSlogin } else { 281660a04ceSlogin None 282660a04ceSlogin }; 283660a04ceSlogin 284660a04ceSlogin if kbuf.is_some() { 285660a04ceSlogin buf_ptr = kbuf.as_mut().unwrap().as_mut_ptr() as usize; 286660a04ceSlogin } 287660a04ceSlogin 288004e86ffSlogin #[allow(unused_unsafe)] 289004e86ffSlogin let cmdtbl = unsafe { 290004e86ffSlogin (phys_2_virt(volatile_read!(cmdheader.ctba) as usize) as *mut HbaCmdTable) 291004e86ffSlogin .as_mut() 292004e86ffSlogin .unwrap() 293004e86ffSlogin }; 294004e86ffSlogin let mut tmp_count = count; 295004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 296004e86ffSlogin 297004e86ffSlogin unsafe { 298004e86ffSlogin // 清空整个table的旧数据 299004e86ffSlogin write_bytes(cmdtbl, 0, 1); 300004e86ffSlogin } 301004e86ffSlogin 302004e86ffSlogin // 8K bytes (16 sectors) per PRDT 303004e86ffSlogin for i in 0..((volatile_read!(cmdheader.prdtl) - 1) as usize) { 304004e86ffSlogin volatile_write!(cmdtbl.prdt_entry[i].dba, virt_2_phys(buf_ptr) as u64); 305004e86ffSlogin volatile_write_bit!(cmdtbl.prdt_entry[i].dbc, (1 << 22) - 1, 8 * 1024 - 1); // 数据长度 306004e86ffSlogin volatile_set_bit!(cmdtbl.prdt_entry[i].dbc, 1 << 31, true); // 允许中断 307004e86ffSlogin buf_ptr += 8 * 1024; 308004e86ffSlogin tmp_count -= 16; 309004e86ffSlogin } 310004e86ffSlogin 311004e86ffSlogin // Last entry 312004e86ffSlogin let las = (volatile_read!(cmdheader.prdtl) - 1) as usize; 313004e86ffSlogin volatile_write!(cmdtbl.prdt_entry[las].dba, virt_2_phys(buf_ptr) as u64); 314004e86ffSlogin volatile_set_bit!(cmdtbl.prdt_entry[las].dbc, 1 << 31, true); // 允许中断 315004e86ffSlogin volatile_write_bit!( 316004e86ffSlogin cmdtbl.prdt_entry[las].dbc, 317004e86ffSlogin (1 << 22) - 1, 318004e86ffSlogin ((tmp_count << 9) - 1) as u32 319004e86ffSlogin ); // 数据长度 320004e86ffSlogin 321004e86ffSlogin // 设置命令 322004e86ffSlogin let cmdfis = unsafe { 323004e86ffSlogin ((&mut cmdtbl.cfis) as *mut [u8] as *mut usize as *mut FisRegH2D) 324004e86ffSlogin .as_mut() 325004e86ffSlogin .unwrap() 326004e86ffSlogin }; 327004e86ffSlogin volatile_write!(cmdfis.fis_type, FisType::RegH2D as u8); 328004e86ffSlogin volatile_set_bit!(cmdfis.pm, 1 << 7, true); // command_bit set 329004e86ffSlogin volatile_write!(cmdfis.command, ATA_CMD_WRITE_DMA_EXT); 330004e86ffSlogin 331004e86ffSlogin volatile_write!(cmdfis.lba0, (lba_id_start & 0xFF) as u8); 332004e86ffSlogin volatile_write!(cmdfis.lba1, ((lba_id_start >> 8) & 0xFF) as u8); 333004e86ffSlogin volatile_write!(cmdfis.lba2, ((lba_id_start >> 16) & 0xFF) as u8); 334004e86ffSlogin volatile_write!(cmdfis.lba3, ((lba_id_start >> 24) & 0xFF) as u8); 335004e86ffSlogin volatile_write!(cmdfis.lba4, ((lba_id_start >> 32) & 0xFF) as u8); 336004e86ffSlogin volatile_write!(cmdfis.lba5, ((lba_id_start >> 40) & 0xFF) as u8); 337004e86ffSlogin 338004e86ffSlogin volatile_write!(cmdfis.countl, (count & 0xFF) as u8); 339004e86ffSlogin volatile_write!(cmdfis.counth, ((count >> 8) & 0xFF) as u8); 340004e86ffSlogin 341004e86ffSlogin volatile_write!(cmdfis.device, 1 << 6); // LBA Mode 342004e86ffSlogin 343004e86ffSlogin volatile_set_bit!(port.ci, 1 << slot, true); // Issue command 344004e86ffSlogin 345004e86ffSlogin // 等待操作完成 346004e86ffSlogin loop { 347004e86ffSlogin if (volatile_read!(port.ci) & (1 << slot)) == 0 { 348004e86ffSlogin break; 349004e86ffSlogin } 350004e86ffSlogin if (volatile_read!(port.is) & HBA_PxIS_TFES) > 0 { 351004e86ffSlogin kerror!("Write disk error"); 352676b8ef6SMork return Err(SystemError::EIO); 353004e86ffSlogin } 354004e86ffSlogin } 355004e86ffSlogin 356004e86ffSlogin compiler_fence(core::sync::atomic::Ordering::SeqCst); 357004e86ffSlogin // successfully read 358004e86ffSlogin return Ok(count * 512); 359004e86ffSlogin } 360004e86ffSlogin 361676b8ef6SMork fn sync(&self) -> Result<(), SystemError> { 362004e86ffSlogin // 由于目前没有block cache, 因此sync返回成功即可 363004e86ffSlogin return Ok(()); 364004e86ffSlogin } 365004e86ffSlogin } 366004e86ffSlogin 367004e86ffSlogin impl LockedAhciDisk { 368004e86ffSlogin pub fn new( 369004e86ffSlogin name: String, 370004e86ffSlogin flags: u16, 371004e86ffSlogin ctrl_num: u8, 372004e86ffSlogin port_num: u8, 373676b8ef6SMork ) -> Result<Arc<LockedAhciDisk>, SystemError> { 374004e86ffSlogin // 构建磁盘结构体 375004e86ffSlogin let result: Arc<LockedAhciDisk> = Arc::new(LockedAhciDisk(SpinLock::new(AhciDisk { 376004e86ffSlogin name, 377004e86ffSlogin flags, 378004e86ffSlogin partitions: Default::default(), 379004e86ffSlogin ctrl_num, 380004e86ffSlogin port_num, 381004e86ffSlogin self_ref: Weak::default(), 382004e86ffSlogin }))); 383004e86ffSlogin 384004e86ffSlogin let table: MbrDiskPartionTable = result.read_mbr_table()?; 385004e86ffSlogin 386004e86ffSlogin // 求出有多少可用分区 387004e86ffSlogin for i in 0..4 { 3887ae679ddSLoGin compiler_fence(Ordering::SeqCst); 389004e86ffSlogin if table.dpte[i].part_type != 0 { 3907ae679ddSLoGin let w = Arc::downgrade(&result); 3917ae679ddSLoGin result.0.lock().partitions.push(Partition::new( 392004e86ffSlogin table.dpte[i].starting_sector() as u64, 393004e86ffSlogin table.dpte[i].starting_lba as u64, 394004e86ffSlogin table.dpte[i].total_sectors as u64, 3957ae679ddSLoGin w, 396004e86ffSlogin i as u16, 397004e86ffSlogin )); 398004e86ffSlogin } 399004e86ffSlogin } 4007ae679ddSLoGin 4017ae679ddSLoGin result.0.lock().self_ref = Arc::downgrade(&result); 4027ae679ddSLoGin 403004e86ffSlogin return Ok(result); 404004e86ffSlogin } 405004e86ffSlogin 406004e86ffSlogin /// @brief: 从磁盘中读取 MBR 分区表结构体 TODO: Cursor 407676b8ef6SMork pub fn read_mbr_table(&self) -> Result<MbrDiskPartionTable, SystemError> { 408004e86ffSlogin let mut table: MbrDiskPartionTable = Default::default(); 409004e86ffSlogin 410004e86ffSlogin // 数据缓冲区 411004e86ffSlogin let mut buf: Vec<u8> = Vec::new(); 412004e86ffSlogin buf.resize(size_of::<MbrDiskPartionTable>(), 0); 413004e86ffSlogin 4147ae679ddSLoGin self.read_at(0, 1, &mut buf)?; 415004e86ffSlogin // 创建 Cursor 用于按字节读取 416004e86ffSlogin let mut cursor = VecCursor::new(buf); 417004e86ffSlogin cursor.seek(SeekFrom::SeekCurrent(446))?; 418004e86ffSlogin 419004e86ffSlogin for i in 0..4 { 420b087521eSChiichen kdebug!("infomation of partition {}:\n", i); 421004e86ffSlogin 422004e86ffSlogin table.dpte[i].flags = cursor.read_u8()?; 423004e86ffSlogin table.dpte[i].starting_head = cursor.read_u8()?; 424004e86ffSlogin table.dpte[i].starting_sector_cylinder = cursor.read_u16()?; 425004e86ffSlogin table.dpte[i].part_type = cursor.read_u8()?; 426004e86ffSlogin table.dpte[i].ending_head = cursor.read_u8()?; 427004e86ffSlogin table.dpte[i].ending_sector_cylingder = cursor.read_u16()?; 428004e86ffSlogin table.dpte[i].starting_lba = cursor.read_u32()?; 429004e86ffSlogin table.dpte[i].total_sectors = cursor.read_u32()?; 430004e86ffSlogin 431b087521eSChiichen kdebug!("dpte[i] = {:?}", table.dpte[i]); 432004e86ffSlogin } 433004e86ffSlogin table.bs_trailsig = cursor.read_u16()?; 434004e86ffSlogin // kdebug!("bs_trailsig = {}", unsafe { 435004e86ffSlogin // read_unaligned(addr_of!(table.bs_trailsig)) 436004e86ffSlogin // }); 437004e86ffSlogin 438004e86ffSlogin return Ok(table); 439004e86ffSlogin } 440004e86ffSlogin } 441004e86ffSlogin 44206d5e247SLoGin impl KObject for LockedAhciDisk { 44306d5e247SLoGin fn as_any_ref(&self) -> &dyn core::any::Any { 44406d5e247SLoGin self 44506d5e247SLoGin } 44606d5e247SLoGin 44706d5e247SLoGin fn inode(&self) -> Option<Arc<KernFSInode>> { 44806d5e247SLoGin todo!() 44906d5e247SLoGin } 45006d5e247SLoGin 45106d5e247SLoGin fn kobj_type(&self) -> Option<&'static dyn KObjType> { 45206d5e247SLoGin todo!() 45306d5e247SLoGin } 45406d5e247SLoGin 45506d5e247SLoGin fn kset(&self) -> Option<Arc<KSet>> { 45606d5e247SLoGin todo!() 45706d5e247SLoGin } 45806d5e247SLoGin 45906d5e247SLoGin fn parent(&self) -> Option<Weak<dyn KObject>> { 46006d5e247SLoGin todo!() 46106d5e247SLoGin } 46206d5e247SLoGin 46306d5e247SLoGin fn set_inode(&self, _inode: Option<Arc<KernFSInode>>) { 46406d5e247SLoGin todo!() 46506d5e247SLoGin } 46606d5e247SLoGin 46706d5e247SLoGin fn kobj_state(&self) -> RwLockReadGuard<KObjectState> { 46806d5e247SLoGin todo!() 46906d5e247SLoGin } 47006d5e247SLoGin 47106d5e247SLoGin fn kobj_state_mut(&self) -> RwLockWriteGuard<KObjectState> { 47206d5e247SLoGin todo!() 47306d5e247SLoGin } 47406d5e247SLoGin 47506d5e247SLoGin fn set_kobj_state(&self, _state: KObjectState) { 47606d5e247SLoGin todo!() 47706d5e247SLoGin } 47806d5e247SLoGin 47906d5e247SLoGin fn name(&self) -> alloc::string::String { 48006d5e247SLoGin todo!() 48106d5e247SLoGin } 48206d5e247SLoGin 48306d5e247SLoGin fn set_name(&self, _name: alloc::string::String) { 48406d5e247SLoGin todo!() 48506d5e247SLoGin } 48606d5e247SLoGin 48706d5e247SLoGin fn set_kset(&self, _kset: Option<Arc<KSet>>) { 48806d5e247SLoGin todo!() 48906d5e247SLoGin } 49006d5e247SLoGin 49106d5e247SLoGin fn set_parent(&self, _parent: Option<Weak<dyn KObject>>) { 49206d5e247SLoGin todo!() 49306d5e247SLoGin } 494a03c4f9dSLoGin 495a03c4f9dSLoGin fn set_kobj_type(&self, _ktype: Option<&'static dyn KObjType>) { 496a03c4f9dSLoGin todo!() 497a03c4f9dSLoGin } 49806d5e247SLoGin } 499b087521eSChiichen 500b087521eSChiichen impl Device for LockedAhciDisk { 501b087521eSChiichen fn dev_type(&self) -> DeviceType { 502b087521eSChiichen return DeviceType::Block; 503b087521eSChiichen } 504b087521eSChiichen 50506d5e247SLoGin fn id_table(&self) -> IdTable { 506b087521eSChiichen todo!() 507b087521eSChiichen } 508b087521eSChiichen 50906d5e247SLoGin fn bus(&self) -> Option<Arc<dyn Bus>> { 51006d5e247SLoGin todo!("LockedAhciDisk::bus()") 511b087521eSChiichen } 512b087521eSChiichen 513a03c4f9dSLoGin fn set_bus(&self, _bus: Option<Arc<dyn Bus>>) { 514a03c4f9dSLoGin todo!("LockedAhciDisk::set_bus()") 515a03c4f9dSLoGin } 516a03c4f9dSLoGin 51706d5e247SLoGin fn driver(&self) -> Option<Arc<dyn Driver>> { 51806d5e247SLoGin todo!("LockedAhciDisk::driver()") 51906d5e247SLoGin } 52006d5e247SLoGin 52106d5e247SLoGin fn is_dead(&self) -> bool { 52206d5e247SLoGin false 52306d5e247SLoGin } 52406d5e247SLoGin 525a03c4f9dSLoGin fn set_driver(&self, _driver: Option<Weak<dyn Driver>>) { 52606d5e247SLoGin todo!("LockedAhciDisk::set_driver()") 527b087521eSChiichen } 528a03c4f9dSLoGin 529a03c4f9dSLoGin fn can_match(&self) -> bool { 530a03c4f9dSLoGin todo!() 531a03c4f9dSLoGin } 532a03c4f9dSLoGin 533a03c4f9dSLoGin fn set_can_match(&self, _can_match: bool) { 534a03c4f9dSLoGin todo!() 535a03c4f9dSLoGin } 536a03c4f9dSLoGin 537a03c4f9dSLoGin fn state_synced(&self) -> bool { 538a03c4f9dSLoGin todo!() 539a03c4f9dSLoGin } 540b087521eSChiichen } 541b087521eSChiichen 542004e86ffSlogin impl BlockDevice for LockedAhciDisk { 543004e86ffSlogin #[inline] 544004e86ffSlogin fn as_any_ref(&self) -> &dyn core::any::Any { 545004e86ffSlogin self 546004e86ffSlogin } 547004e86ffSlogin 548004e86ffSlogin #[inline] 549004e86ffSlogin fn blk_size_log2(&self) -> u8 { 550004e86ffSlogin 9 551004e86ffSlogin } 552004e86ffSlogin 553676b8ef6SMork fn sync(&self) -> Result<(), SystemError> { 554004e86ffSlogin return self.0.lock().sync(); 555004e86ffSlogin } 556004e86ffSlogin 557004e86ffSlogin #[inline] 558b087521eSChiichen fn device(&self) -> Arc<dyn Device> { 559004e86ffSlogin return self.0.lock().self_ref.upgrade().unwrap(); 560004e86ffSlogin } 561004e86ffSlogin 562004e86ffSlogin fn block_size(&self) -> usize { 563004e86ffSlogin todo!() 564004e86ffSlogin } 565004e86ffSlogin 566004e86ffSlogin fn partitions(&self) -> Vec<Arc<Partition>> { 567004e86ffSlogin return self.0.lock().partitions.clone(); 568004e86ffSlogin } 569b087521eSChiichen 570b087521eSChiichen #[inline] 571b087521eSChiichen fn read_at( 572b087521eSChiichen &self, 573b087521eSChiichen lba_id_start: BlockId, // 起始lba编号 574b087521eSChiichen count: usize, // 读取lba的数量 575b087521eSChiichen buf: &mut [u8], 576b087521eSChiichen ) -> Result<usize, SystemError> { 577b087521eSChiichen self.0.lock().read_at(lba_id_start, count, buf) 578b087521eSChiichen } 579b087521eSChiichen 580b087521eSChiichen #[inline] 581b087521eSChiichen fn write_at( 582b087521eSChiichen &self, 583b087521eSChiichen lba_id_start: BlockId, 584b087521eSChiichen count: usize, 585b087521eSChiichen buf: &[u8], 586b087521eSChiichen ) -> Result<usize, SystemError> { 587b087521eSChiichen self.0.lock().write_at(lba_id_start, count, buf) 588b087521eSChiichen } 589004e86ffSlogin } 590