1 use core::{ 2 ffi::{c_uint, c_void}, 3 mem::MaybeUninit, 4 sync::atomic::AtomicBool, 5 }; 6 7 use alloc::{ 8 string::{String, ToString}, 9 sync::{Arc, Weak}, 10 vec::Vec, 11 }; 12 use system_error::SystemError; 13 use unified_init::macros::unified_init; 14 15 use crate::{ 16 arch::MMArch, 17 driver::{ 18 base::{ 19 class::Class, 20 device::{ 21 bus::Bus, device_manager, driver::Driver, Device, DeviceState, DeviceType, IdTable, 22 }, 23 kobject::{KObjType, KObject, KObjectState, LockedKObjectState}, 24 kset::KSet, 25 platform::{ 26 platform_device::{platform_device_manager, PlatformDevice}, 27 platform_driver::{platform_driver_manager, PlatformDriver}, 28 CompatibleTable, 29 }, 30 }, 31 serial::serial8250::send_to_default_serial8250_port, 32 video::fbdev::base::{fbmem::frame_buffer_manager, FbVisual, FRAME_BUFFER_SET}, 33 }, 34 filesystem::{ 35 kernfs::KernFSInode, 36 sysfs::{file::sysfs_emit_str, Attribute, AttributeGroup, SysFSOpsSupport}, 37 vfs::syscall::ModeType, 38 }, 39 include::bindings::bindings::{ 40 multiboot2_get_Framebuffer_info, multiboot2_iter, multiboot_tag_framebuffer_info_t, 41 FRAME_BUFFER_MAPPING_OFFSET, 42 }, 43 init::{boot_params, initcall::INITCALL_DEVICE}, 44 libs::{ 45 align::page_align_up, 46 once::Once, 47 rwlock::{RwLock, RwLockReadGuard, RwLockWriteGuard}, 48 spinlock::SpinLock, 49 }, 50 mm::{ 51 allocator::page_frame::PageFrameCount, no_init::pseudo_map_phys, MemoryManagementArch, 52 PhysAddr, VirtAddr, 53 }, 54 }; 55 56 use super::base::{ 57 fbmem::FbDevice, BlankMode, BootTimeVideoType, FbAccel, FbActivateFlags, FbId, FbState, FbType, 58 FbVModeFlags, FbVarScreenInfo, FbVideoMode, FixedScreenInfo, FrameBuffer, FrameBufferInfo, 59 FrameBufferInfoData, FrameBufferOps, 60 }; 61 62 /// 当前机器上面是否有vesa帧缓冲区 63 static HAS_VESA_FB: AtomicBool = AtomicBool::new(false); 64 65 lazy_static! { 66 static ref VESAFB_FIX_INFO: RwLock<FixedScreenInfo> = RwLock::new(FixedScreenInfo { 67 id: FixedScreenInfo::name2id("VESA VGA"), 68 fb_type: FbType::PackedPixels, 69 accel: FbAccel::None, 70 ..Default::default() 71 }); 72 static ref VESAFB_DEFINED: RwLock<FbVarScreenInfo> = RwLock::new(FbVarScreenInfo { 73 activate: FbActivateFlags::FB_ACTIVATE_NOW, 74 height: None, 75 width: None, 76 right_margin: 32, 77 upper_margin: 16, 78 lower_margin: 4, 79 vsync_len: 4, 80 vmode: FbVModeFlags::FB_VMODE_NONINTERLACED, 81 82 ..Default::default() 83 }); 84 } 85 86 #[derive(Debug)] 87 #[cast_to([sync] Device)] 88 #[cast_to([sync] PlatformDevice)] 89 pub struct VesaFb { 90 inner: SpinLock<InnerVesaFb>, 91 kobj_state: LockedKObjectState, 92 fb_data: RwLock<FrameBufferInfoData>, 93 } 94 95 impl VesaFb { 96 pub const NAME: &'static str = "vesa_vga"; 97 pub fn new() -> Self { 98 let mut fb_info_data = FrameBufferInfoData::new(); 99 fb_info_data.pesudo_palette.resize(256, 0); 100 return Self { 101 inner: SpinLock::new(InnerVesaFb { 102 bus: None, 103 class: None, 104 driver: None, 105 kern_inode: None, 106 parent: None, 107 kset: None, 108 kobj_type: None, 109 device_state: DeviceState::NotInitialized, 110 pdev_id: 0, 111 pdev_id_auto: false, 112 fb_id: FbId::INIT, 113 fb_device: None, 114 fb_state: FbState::Suspended, 115 }), 116 kobj_state: LockedKObjectState::new(None), 117 fb_data: RwLock::new(fb_info_data), 118 }; 119 } 120 } 121 122 #[derive(Debug)] 123 struct InnerVesaFb { 124 bus: Option<Weak<dyn Bus>>, 125 class: Option<Weak<dyn Class>>, 126 driver: Option<Weak<dyn Driver>>, 127 kern_inode: Option<Arc<KernFSInode>>, 128 parent: Option<Weak<dyn KObject>>, 129 kset: Option<Arc<KSet>>, 130 kobj_type: Option<&'static dyn KObjType>, 131 device_state: DeviceState, 132 pdev_id: i32, 133 pdev_id_auto: bool, 134 fb_id: FbId, 135 fb_device: Option<Arc<FbDevice>>, 136 fb_state: FbState, 137 } 138 139 impl FrameBuffer for VesaFb { 140 fn fb_id(&self) -> FbId { 141 self.inner.lock().fb_id 142 } 143 144 fn set_fb_id(&self, id: FbId) { 145 self.inner.lock().fb_id = id; 146 } 147 } 148 149 impl PlatformDevice for VesaFb { 150 fn pdev_name(&self) -> &str { 151 Self::NAME 152 } 153 154 fn set_pdev_id(&self, id: i32) { 155 self.inner.lock().pdev_id = id; 156 } 157 158 fn set_pdev_id_auto(&self, id_auto: bool) { 159 self.inner.lock().pdev_id_auto = id_auto; 160 } 161 162 fn compatible_table(&self) -> CompatibleTable { 163 todo!() 164 } 165 166 fn is_initialized(&self) -> bool { 167 self.inner.lock().device_state == DeviceState::Initialized 168 } 169 170 fn set_state(&self, set_state: DeviceState) { 171 self.inner.lock().device_state = set_state; 172 } 173 } 174 175 impl Device for VesaFb { 176 fn dev_type(&self) -> DeviceType { 177 DeviceType::Char 178 } 179 180 fn id_table(&self) -> IdTable { 181 IdTable::new(self.name(), None) 182 } 183 184 fn bus(&self) -> Option<Weak<dyn Bus>> { 185 self.inner.lock().bus.clone() 186 } 187 188 fn set_bus(&self, bus: Option<Weak<dyn Bus>>) { 189 self.inner.lock().bus = bus; 190 } 191 192 fn set_class(&self, class: Option<Weak<dyn Class>>) { 193 self.inner.lock().class = class; 194 } 195 196 fn class(&self) -> Option<Arc<dyn Class>> { 197 let mut guard = self.inner.lock(); 198 199 let r = guard.class.clone()?.upgrade(); 200 if r.is_none() { 201 // 为了让弱引用失效 202 guard.class = None; 203 } 204 205 return r; 206 } 207 208 fn driver(&self) -> Option<Arc<dyn Driver>> { 209 self.inner.lock().driver.clone()?.upgrade() 210 } 211 212 fn set_driver(&self, driver: Option<Weak<dyn Driver>>) { 213 self.inner.lock().driver = driver; 214 } 215 216 fn is_dead(&self) -> bool { 217 false 218 } 219 220 fn can_match(&self) -> bool { 221 true 222 } 223 224 fn set_can_match(&self, _can_match: bool) {} 225 226 fn state_synced(&self) -> bool { 227 true 228 } 229 } 230 231 impl KObject for VesaFb { 232 fn as_any_ref(&self) -> &dyn core::any::Any { 233 self 234 } 235 236 fn set_inode(&self, inode: Option<Arc<KernFSInode>>) { 237 self.inner.lock().kern_inode = inode; 238 } 239 240 fn inode(&self) -> Option<Arc<KernFSInode>> { 241 self.inner.lock().kern_inode.clone() 242 } 243 244 fn parent(&self) -> Option<Weak<dyn KObject>> { 245 self.inner.lock().parent.clone() 246 } 247 248 fn set_parent(&self, parent: Option<Weak<dyn KObject>>) { 249 self.inner.lock().parent = parent; 250 } 251 252 fn kset(&self) -> Option<Arc<KSet>> { 253 self.inner.lock().kset.clone() 254 } 255 256 fn set_kset(&self, kset: Option<Arc<KSet>>) { 257 self.inner.lock().kset = kset; 258 } 259 260 fn kobj_type(&self) -> Option<&'static dyn KObjType> { 261 self.inner.lock().kobj_type 262 } 263 264 fn set_kobj_type(&self, ktype: Option<&'static dyn KObjType>) { 265 self.inner.lock().kobj_type = ktype; 266 } 267 268 fn name(&self) -> String { 269 Self::NAME.to_string() 270 } 271 272 fn set_name(&self, _name: String) { 273 // do nothing 274 } 275 276 fn kobj_state(&self) -> RwLockReadGuard<KObjectState> { 277 self.kobj_state.read() 278 } 279 280 fn kobj_state_mut(&self) -> RwLockWriteGuard<KObjectState> { 281 self.kobj_state.write() 282 } 283 284 fn set_kobj_state(&self, state: KObjectState) { 285 *self.kobj_state.write() = state; 286 } 287 } 288 289 impl FrameBufferOps for VesaFb { 290 fn fb_open(&self, _user: bool) { 291 todo!() 292 } 293 294 fn fb_release(&self, _user: bool) { 295 todo!() 296 } 297 298 fn fb_set_color_register( 299 &self, 300 regno: u16, 301 mut red: u16, 302 mut green: u16, 303 mut blue: u16, 304 ) -> Result<(), SystemError> { 305 let mut fb_data = self.framebuffer_info_data().write(); 306 let var = self.current_fb_var(); 307 if regno as usize >= fb_data.pesudo_palette.len() { 308 return Err(SystemError::E2BIG); 309 } 310 311 if var.bits_per_pixel == 8 { 312 todo!("vesa_setpalette todo"); 313 } else if regno < 16 { 314 match var.bits_per_pixel { 315 16 => { 316 if var.red.offset == 10 { 317 // RGB 1:5:5:5 318 fb_data.pesudo_palette[regno as usize] = ((red as u32 & 0xf800) >> 1) 319 | ((green as u32 & 0xf800) >> 6) 320 | ((blue as u32 & 0xf800) >> 11); 321 } else { 322 fb_data.pesudo_palette[regno as usize] = (red as u32 & 0xf800) 323 | ((green as u32 & 0xfc00) >> 5) 324 | ((blue as u32 & 0xf800) >> 11); 325 } 326 } 327 24 | 32 => { 328 red >>= 8; 329 green >>= 8; 330 blue >>= 8; 331 fb_data.pesudo_palette[regno as usize] = ((red as u32) << var.red.offset) 332 | ((green as u32) << var.green.offset) 333 | ((blue as u32) << var.blue.offset); 334 } 335 _ => {} 336 } 337 } 338 339 Ok(()) 340 } 341 342 fn fb_blank(&self, _blank_mode: BlankMode) -> Result<(), SystemError> { 343 todo!() 344 } 345 346 fn fb_destroy(&self) { 347 todo!() 348 } 349 350 fn fb_read(&self, buf: &mut [u8], pos: usize) -> Result<usize, SystemError> { 351 let bp = boot_params().read(); 352 353 let vaddr = bp.screen_info.lfb_virt_base.ok_or(SystemError::ENODEV)?; 354 let size = self.current_fb_fix().smem_len; 355 drop(bp); 356 if pos >= size { 357 return Ok(0); 358 } 359 360 let pos = pos as i64; 361 let size = size as i64; 362 363 let len = core::cmp::min(size - pos, buf.len() as i64) as usize; 364 365 let slice = unsafe { core::slice::from_raw_parts(vaddr.as_ptr::<u8>(), size as usize) }; 366 buf[..len].copy_from_slice(&slice[pos as usize..(pos as usize + len)]); 367 368 return Ok(len); 369 } 370 371 fn fb_write(&self, buf: &[u8], pos: usize) -> Result<usize, SystemError> { 372 let bp = boot_params().read(); 373 374 let vaddr = bp.screen_info.lfb_virt_base.ok_or(SystemError::ENODEV)?; 375 let size = self.current_fb_fix().smem_len; 376 377 if pos >= size { 378 return Ok(0); 379 } 380 381 let pos = pos as i64; 382 let size = size as i64; 383 384 let len = core::cmp::min(size - pos, buf.len() as i64) as usize; 385 386 let slice = unsafe { core::slice::from_raw_parts_mut(vaddr.as_ptr::<u8>(), size as usize) }; 387 slice[pos as usize..(pos as usize + len)].copy_from_slice(&buf[..len]); 388 389 return Ok(len); 390 } 391 392 fn fb_image_blit(&self, image: &super::base::FbImage) { 393 self.generic_imageblit(image); 394 } 395 396 /// ## 填充矩形 397 fn fb_fillrect(&self, rect: super::base::FillRectData) -> Result<(), SystemError> { 398 // kwarn!("rect {rect:?}"); 399 400 let boot_param = boot_params().read(); 401 let screen_base = boot_param 402 .screen_info 403 .lfb_virt_base 404 .ok_or(SystemError::ENODEV)?; 405 406 let fg = if self.current_fb_fix().visual == FbVisual::TrueColor 407 || self.current_fb_fix().visual == FbVisual::DirectColor 408 { 409 self.fb_data.read().pesudo_palette[rect.color as usize] 410 } else { 411 rect.color 412 }; 413 414 let bpp = self.current_fb_var().bits_per_pixel; 415 // 每行像素数 416 let line_offset = self.current_fb_var().xres; 417 match bpp { 418 32 => { 419 let base = screen_base.as_ptr::<u32>(); 420 421 for y in rect.dy..(rect.dy + rect.height) { 422 for x in rect.dx..(rect.dx + rect.width) { 423 unsafe { *base.add((y * line_offset + x) as usize) = fg }; 424 } 425 } 426 } 427 16 => { 428 let base = screen_base.as_ptr::<u16>(); 429 430 for y in rect.dy..(rect.dy + rect.height) { 431 for x in rect.dx..(rect.dx + rect.width) { 432 unsafe { *base.add((y * line_offset + x) as usize) = 0x0000 }; 433 } 434 } 435 } 436 24 => { 437 let base = screen_base.as_ptr::<[u8; 3]>(); 438 439 for y in rect.dy..(rect.dy + rect.height) { 440 for x in rect.dx..(rect.dx + rect.width) { 441 unsafe { *base.add((y * line_offset + x) as usize) = [0, 0, 0] }; 442 } 443 } 444 } 445 _ => { 446 send_to_default_serial8250_port( 447 format!("unsupported bit depth:{}!\n\0", bpp).as_bytes(), 448 ); 449 todo!() 450 } 451 } 452 453 Ok(()) 454 } 455 456 #[inline(never)] 457 fn fb_copyarea(&self, data: super::base::CopyAreaData) { 458 let bp = boot_params().read(); 459 let base = bp.screen_info.lfb_virt_base.unwrap(); 460 let var = self.current_fb_var(); 461 462 // 原区域或者目标区域全在屏幕外，则直接返回 463 if data.sx > var.xres as i32 464 || data.sy > var.yres as i32 465 || data.dx > var.xres as i32 466 || data.dy > var.yres as i32 467 || (data.sx + data.width as i32) < 0 468 || (data.sy + data.height as i32) < 0 469 || (data.dx + data.width as i32) < 0 470 || (data.dy + data.height as i32) < 0 471 { 472 return; 473 } 474 475 // 求两个矩形可视范围交集 476 let (s_visiable_x, s_w) = if data.sx < 0 { 477 (0, (data.width - ((-data.sx) as u32)).min(var.xres)) 478 } else { 479 let w = if data.sx as u32 + data.width > var.xres { 480 var.xres - data.sx as u32 481 } else { 482 data.width 483 }; 484 485 (data.sx, w) 486 }; 487 let (s_visiable_y, s_h) = if data.sy < 0 { 488 (0, (data.height - ((-data.sy) as u32).min(var.yres))) 489 } else { 490 let h = if data.sy as u32 + data.height > var.yres { 491 var.yres - data.sy as u32 492 } else { 493 data.height 494 }; 495 496 (data.sy, h) 497 }; 498 499 let (d_visiable_x, d_w) = if data.dx < 0 { 500 (0, (data.width - ((-data.dx) as u32)).min(var.xres)) 501 } else { 502 let w = if data.dx as u32 + data.width > var.xres { 503 var.xres - data.dx as u32 504 } else { 505 data.width 506 }; 507 508 (data.dx, w) 509 }; 510 let (d_visiable_y, d_h) = if data.dy < 0 { 511 (0, (data.height - ((-data.dy) as u32).min(var.yres))) 512 } else { 513 let h = if data.dy as u32 + data.height > var.yres { 514 var.yres - data.dy as u32 515 } else { 516 data.height 517 }; 518 519 (data.dy, h) 520 }; 521 522 // 可视范围无交集 523 if !(d_h + s_h > data.height && s_w + d_w > data.width) { 524 return; 525 } 526 527 // 可视区域左上角相对于矩形的坐标 528 let s_relative_x = s_visiable_x - data.sx; 529 let s_relative_y = s_visiable_y - data.sy; 530 let d_relative_x = d_visiable_x - data.dx; 531 let d_relative_y = d_visiable_y - data.dy; 532 533 let visiable_x = s_relative_x.max(d_relative_x); 534 let visiable_y = s_relative_y.max(d_relative_y); 535 let visiable_h = d_h + s_h - data.height; 536 let visiable_w = d_w + s_w - data.width; 537 538 let s_real_x = (visiable_x + data.sx) as u32; 539 let s_real_y = (visiable_y + data.sy) as u32; 540 let d_real_x = (visiable_x + data.dx) as u32; 541 let d_real_y = (visiable_y + data.dy) as u32; 542 543 let bytes_per_pixel = var.bits_per_pixel >> 3; 544 let bytes_per_line = var.xres * bytes_per_pixel; 545 546 let src = 547 base + VirtAddr::new((s_real_y * bytes_per_line + s_real_x * bytes_per_pixel) as usize); 548 549 let dst = 550 base + VirtAddr::new((d_real_y * bytes_per_line + d_real_x * bytes_per_pixel) as usize); 551 552 let size = (visiable_h * visiable_w) as usize; 553 554 match bytes_per_pixel { 555 4 => { 556 // 32bpp 557 let mut dst = dst.as_ptr::<u32>(); 558 let mut src = src.as_ptr::<u32>(); 559 let line_offset = var.xres as usize; 560 561 if s_real_x > d_real_x { 562 // 如果src在dst下方，则可以直接拷贝不会出现指针覆盖 563 unsafe { 564 for _ in 0..visiable_h { 565 core::ptr::copy(src, dst, visiable_w as usize); 566 src = src.add(line_offset); 567 dst = dst.add(visiable_w as usize); 568 } 569 } 570 } else { 571 let mut tmp: Vec<u32> = vec![0; size]; 572 let mut tmp_ptr = tmp.as_mut_ptr(); 573 574 // 这里是一个可以优化的点，现在为了避免指针拷贝时覆盖，统一先拷贝进入buf再拷贝到dst 575 unsafe { 576 for _ in 0..visiable_h { 577 core::ptr::copy(src, tmp_ptr, visiable_w as usize); 578 src = src.add(line_offset); 579 tmp_ptr = tmp_ptr.add(visiable_w as usize); 580 } 581 582 tmp_ptr = tmp_ptr.sub(size); 583 for _ in 0..visiable_h { 584 core::ptr::copy(tmp_ptr, dst, visiable_w as usize); 585 dst = dst.add(line_offset); 586 tmp_ptr = tmp_ptr.add(visiable_w as usize); 587 } 588 } 589 } 590 } 591 2 => { 592 let mut dst = dst.as_ptr::<u16>(); 593 let mut src = src.as_ptr::<u16>(); 594 let line_offset = var.xres as usize; 595 596 if s_real_x > d_real_x { 597 // 如果src在dst下方，则可以直接拷贝不会出现指针覆盖 598 unsafe { 599 for _ in 0..visiable_h { 600 core::ptr::copy(src, dst, visiable_w as usize); 601 src = src.add(line_offset); 602 dst = dst.add(visiable_w as usize); 603 } 604 } 605 } else { 606 let mut tmp: Vec<u16> = vec![0; size]; 607 let mut tmp_ptr = tmp.as_mut_ptr(); 608 609 // 这里是一个可以优化的点，现在为了避免指针拷贝时覆盖，统一先拷贝进入buf再拷贝到dst 610 unsafe { 611 for _ in 0..visiable_h { 612 core::ptr::copy(src, tmp_ptr, visiable_w as usize); 613 src = src.add(line_offset); 614 tmp_ptr = tmp_ptr.add(visiable_w as usize); 615 } 616 617 tmp_ptr = tmp_ptr.sub(size); 618 for _ in 0..visiable_h { 619 core::ptr::copy(tmp_ptr, dst, visiable_w as usize); 620 dst = dst.add(line_offset); 621 tmp_ptr = tmp_ptr.add(visiable_w as usize); 622 } 623 } 624 } 625 } 626 3 => { 627 let mut dst = dst.as_ptr::<[u8; 3]>(); 628 let mut src = src.as_ptr::<[u8; 3]>(); 629 let line_offset = var.xres as usize; 630 631 if s_real_x > d_real_x { 632 // 如果src在dst下方，则可以直接拷贝不会出现指针覆盖 633 unsafe { 634 for _ in 0..visiable_h { 635 core::ptr::copy(src, dst, visiable_w as usize); 636 src = src.add(line_offset); 637 dst = dst.add(visiable_w as usize); 638 } 639 } 640 } else { 641 let mut tmp: Vec<u32> = vec![0; size]; 642 let mut tmp_ptr = tmp.as_mut_ptr() as *mut [u8; 3]; 643 644 // 这里是一个可以优化的点，现在为了避免指针拷贝时覆盖，统一先拷贝进入buf再拷贝到dst 645 unsafe { 646 for _ in 0..visiable_h { 647 core::ptr::copy(src, tmp_ptr, visiable_w as usize); 648 src = src.add(line_offset); 649 tmp_ptr = tmp_ptr.add(visiable_w as usize); 650 } 651 652 tmp_ptr = tmp_ptr.sub(size); 653 for _ in 0..visiable_h { 654 core::ptr::copy(tmp_ptr, dst, visiable_w as usize); 655 dst = dst.add(line_offset); 656 tmp_ptr = tmp_ptr.add(visiable_w as usize); 657 } 658 } 659 } 660 } 661 662 _ => { 663 send_to_default_serial8250_port( 664 format!("bytes_per_pixel:{}\n\0", bytes_per_pixel).as_bytes(), 665 ); 666 todo!() 667 } 668 } 669 } 670 } 671 672 impl FrameBufferInfo for VesaFb { 673 fn fb_device(&self) -> Option<Arc<FbDevice>> { 674 self.inner.lock().fb_device.clone() 675 } 676 677 fn set_fb_device(&self, device: Option<Arc<FbDevice>>) { 678 self.inner.lock().fb_device = device; 679 } 680 681 fn screen_size(&self) -> usize { 682 todo!() 683 } 684 685 fn current_fb_var(&self) -> FbVarScreenInfo { 686 *VESAFB_DEFINED.read() 687 } 688 689 fn current_fb_fix(&self) -> FixedScreenInfo { 690 *VESAFB_FIX_INFO.read() 691 } 692 693 fn video_mode(&self) -> Option<&FbVideoMode> { 694 todo!() 695 } 696 697 fn state(&self) -> FbState { 698 self.inner.lock().fb_state 699 } 700 701 fn framebuffer_info_data(&self) -> &RwLock<FrameBufferInfoData> { 702 &self.fb_data 703 } 704 } 705 706 #[derive(Debug)] 707 #[cast_to([sync] PlatformDriver)] 708 struct VesaFbDriver { 709 inner: SpinLock<InnerVesaFbDriver>, 710 kobj_state: LockedKObjectState, 711 } 712 713 impl VesaFbDriver { 714 pub fn new() -> Arc<Self> { 715 let r = Arc::new(Self { 716 inner: SpinLock::new(InnerVesaFbDriver { 717 ktype: None, 718 kset: None, 719 parent: None, 720 kernfs_inode: None, 721 devices: Vec::new(), 722 bus: None, 723 self_ref: Weak::new(), 724 }), 725 kobj_state: LockedKObjectState::new(None), 726 }); 727 728 r.inner.lock().self_ref = Arc::downgrade(&r); 729 730 return r; 731 } 732 } 733 734 #[derive(Debug)] 735 struct InnerVesaFbDriver { 736 ktype: Option<&'static dyn KObjType>, 737 kset: Option<Arc<KSet>>, 738 parent: Option<Weak<dyn KObject>>, 739 kernfs_inode: Option<Arc<KernFSInode>>, 740 devices: Vec<Arc<dyn Device>>, 741 bus: Option<Weak<dyn Bus>>, 742 743 self_ref: Weak<VesaFbDriver>, 744 } 745 746 impl VesaFbDriver { 747 const NAME: &'static str = "vesa-framebuffer"; 748 } 749 750 impl PlatformDriver for VesaFbDriver { 751 fn probe(&self, device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> { 752 let device = device 753 .clone() 754 .arc_any() 755 .downcast::<VesaFb>() 756 .map_err(|_| SystemError::EINVAL)?; 757 758 device.set_driver(Some(self.inner.lock_irqsave().self_ref.clone())); 759 760 return Ok(()); 761 } 762 763 fn remove(&self, _device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> { 764 todo!() 765 } 766 767 fn shutdown(&self, _device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> { 768 // do nothing 769 return Ok(()); 770 } 771 772 fn suspend(&self, _device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> { 773 // do nothing 774 return Ok(()); 775 } 776 777 fn resume(&self, _device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> { 778 todo!() 779 } 780 } 781 782 impl Driver for VesaFbDriver { 783 fn id_table(&self) -> Option<IdTable> { 784 Some(IdTable::new(VesaFb::NAME.to_string(), None)) 785 } 786 787 fn devices(&self) -> Vec<Arc<dyn Device>> { 788 self.inner.lock().devices.clone() 789 } 790 791 fn add_device(&self, device: Arc<dyn Device>) { 792 let mut guard = self.inner.lock(); 793 // check if the device is already in the list 794 if guard.devices.iter().any(|dev| Arc::ptr_eq(dev, &device)) { 795 return; 796 } 797 798 guard.devices.push(device); 799 } 800 801 fn delete_device(&self, device: &Arc<dyn Device>) { 802 let mut guard = self.inner.lock(); 803 guard.devices.retain(|dev| !Arc::ptr_eq(dev, device)); 804 } 805 806 fn set_bus(&self, bus: Option<Weak<dyn Bus>>) { 807 self.inner.lock().bus = bus; 808 } 809 810 fn bus(&self) -> Option<Weak<dyn Bus>> { 811 self.inner.lock().bus.clone() 812 } 813 814 fn dev_groups(&self) -> &'static [&'static dyn AttributeGroup] { 815 return &[&VesaFbAnonAttributeGroup]; 816 } 817 } 818 819 impl KObject for VesaFbDriver { 820 fn as_any_ref(&self) -> &dyn core::any::Any { 821 self 822 } 823 824 fn set_inode(&self, inode: Option<Arc<KernFSInode>>) { 825 self.inner.lock().kernfs_inode = inode; 826 } 827 828 fn inode(&self) -> Option<Arc<KernFSInode>> { 829 self.inner.lock().kernfs_inode.clone() 830 } 831 832 fn parent(&self) -> Option<Weak<dyn KObject>> { 833 self.inner.lock().parent.clone() 834 } 835 836 fn set_parent(&self, parent: Option<Weak<dyn KObject>>) { 837 self.inner.lock().parent = parent; 838 } 839 840 fn kset(&self) -> Option<Arc<KSet>> { 841 self.inner.lock().kset.clone() 842 } 843 844 fn set_kset(&self, kset: Option<Arc<KSet>>) { 845 self.inner.lock().kset = kset; 846 } 847 848 fn kobj_type(&self) -> Option<&'static dyn KObjType> { 849 self.inner.lock().ktype 850 } 851 852 fn set_kobj_type(&self, ktype: Option<&'static dyn KObjType>) { 853 self.inner.lock().ktype = ktype; 854 } 855 856 fn name(&self) -> String { 857 Self::NAME.to_string() 858 } 859 860 fn set_name(&self, _name: String) { 861 // do nothing 862 } 863 864 fn kobj_state(&self) -> RwLockReadGuard<KObjectState> { 865 self.kobj_state.read() 866 } 867 868 fn kobj_state_mut(&self) -> RwLockWriteGuard<KObjectState> { 869 self.kobj_state.write() 870 } 871 872 fn set_kobj_state(&self, state: KObjectState) { 873 *self.kobj_state.write() = state; 874 } 875 } 876 877 #[derive(Debug)] 878 struct VesaFbAnonAttributeGroup; 879 880 impl AttributeGroup for VesaFbAnonAttributeGroup { 881 fn name(&self) -> Option<&str> { 882 None 883 } 884 885 fn attrs(&self) -> &[&'static dyn Attribute] { 886 &[&AnonAttrPhysAddr as &'static dyn Attribute] 887 } 888 889 fn is_visible( 890 &self, 891 _kobj: Arc<dyn KObject>, 892 attr: &'static dyn Attribute, 893 ) -> Option<ModeType> { 894 Some(attr.mode()) 895 } 896 } 897 898 #[derive(Debug)] 899 struct AnonAttrPhysAddr; 900 901 impl Attribute for AnonAttrPhysAddr { 902 fn name(&self) -> &str { 903 "smem_start" 904 } 905 906 fn mode(&self) -> ModeType { 907 ModeType::S_IRUGO 908 } 909 910 fn support(&self) -> SysFSOpsSupport { 911 SysFSOpsSupport::ATTR_SHOW 912 } 913 914 fn show(&self, _kobj: Arc<dyn KObject>, buf: &mut [u8]) -> Result<usize, SystemError> { 915 sysfs_emit_str( 916 buf, 917 format!( 918 "0x{:x}\n", 919 VESAFB_FIX_INFO 920 .read() 921 .smem_start 922 .unwrap_or(PhysAddr::new(0)) 923 .data() 924 ) 925 .as_str(), 926 ) 927 } 928 } 929 930 #[unified_init(INITCALL_DEVICE)] 931 pub fn vesa_fb_driver_init() -> Result<(), SystemError> { 932 let driver = VesaFbDriver::new(); 933 934 platform_driver_manager().register(driver)?; 935 936 return Ok(()); 937 } 938 939 /// 在内存管理初始化之前,初始化vesafb 940 pub fn vesafb_early_init() -> Result<VirtAddr, SystemError> { 941 let mut _reserved: u32 = 0; 942 943 let mut fb_info: MaybeUninit<multiboot_tag_framebuffer_info_t> = MaybeUninit::uninit(); 944 //从multiboot2中读取帧缓冲区信息至fb_info 945 946 // todo: 换成rust的，并且检测是否成功获取 947 unsafe { 948 multiboot2_iter( 949 Some(multiboot2_get_Framebuffer_info), 950 fb_info.as_mut_ptr() as usize as *mut c_void, 951 &mut _reserved as *mut c_uint, 952 ) 953 }; 954 unsafe { fb_info.assume_init() }; 955 let fb_info: multiboot_tag_framebuffer_info_t = unsafe { core::mem::transmute(fb_info) }; 956 957 // todo: 判断是否有vesa帧缓冲区，这里暂时直接设置true 958 HAS_VESA_FB.store(true, core::sync::atomic::Ordering::SeqCst); 959 960 let width = fb_info.framebuffer_width; 961 let height = fb_info.framebuffer_height; 962 963 let mut boot_params_guard = boot_params().write(); 964 let boottime_screen_info = &mut boot_params_guard.screen_info; 965 966 boottime_screen_info.is_vga = true; 967 968 boottime_screen_info.lfb_base = PhysAddr::new(fb_info.framebuffer_addr as usize); 969 970 if fb_info.framebuffer_type == 2 { 971 //当type=2时,width与height用字符数表示,故depth=8 972 boottime_screen_info.origin_video_cols = width as u8; 973 boottime_screen_info.origin_video_lines = height as u8; 974 boottime_screen_info.video_type = BootTimeVideoType::Mda; 975 boottime_screen_info.lfb_depth = 8; 976 } else { 977 //否则为图像模式,depth应参照帧缓冲区信息里面的每个像素的位数 978 boottime_screen_info.lfb_width = width; 979 boottime_screen_info.lfb_height = height; 980 boottime_screen_info.video_type = BootTimeVideoType::Vlfb; 981 boottime_screen_info.lfb_depth = fb_info.framebuffer_bpp as u8; 982 } 983 984 boottime_screen_info.lfb_size = 985 (width * height * ((fb_info.framebuffer_bpp as u32 + 7) / 8)) as usize; 986 987 // let buf_vaddr = VirtAddr::new(0xffff800003200000); 988 let buf_vaddr = VirtAddr::new( 989 crate::include::bindings::bindings::SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE as usize 990 + FRAME_BUFFER_MAPPING_OFFSET as usize, 991 ); 992 boottime_screen_info.lfb_virt_base = Some(buf_vaddr); 993 994 let init_text = "Video driver to map.\n\0"; 995 send_to_default_serial8250_port(init_text.as_bytes()); 996 997 // 地址映射 998 let paddr = PhysAddr::new(fb_info.framebuffer_addr as usize); 999 let count = 1000 PageFrameCount::new(page_align_up(boottime_screen_info.lfb_size) / MMArch::PAGE_SIZE); 1001 unsafe { pseudo_map_phys(buf_vaddr, paddr, count) }; 1002 return Ok(buf_vaddr); 1003 } 1004 1005 #[unified_init(INITCALL_DEVICE)] 1006 fn vesa_fb_device_init() -> Result<(), SystemError> { 1007 // 如果没有vesa帧缓冲区，直接返回 1008 if !HAS_VESA_FB.load(core::sync::atomic::Ordering::SeqCst) { 1009 return Ok(()); 1010 } 1011 1012 static INIT: Once = Once::new(); 1013 INIT.call_once(|| { 1014 kinfo!("vesa fb device init"); 1015 let device = Arc::new(VesaFb::new()); 1016 1017 let mut fb_fix = VESAFB_FIX_INFO.write_irqsave(); 1018 let mut fb_var = VESAFB_DEFINED.write_irqsave(); 1019 1020 let boot_params_guard = boot_params().read(); 1021 let boottime_screen_info = &boot_params_guard.screen_info; 1022 1023 fb_fix.smem_start = Some(boottime_screen_info.lfb_base); 1024 fb_fix.smem_len = boottime_screen_info.lfb_size; 1025 1026 if boottime_screen_info.video_type == BootTimeVideoType::Mda { 1027 fb_fix.visual = FbVisual::Mono10; 1028 fb_var.bits_per_pixel = 8; 1029 fb_fix.line_length = 1030 (boottime_screen_info.origin_video_cols as u32) * (fb_var.bits_per_pixel / 8); 1031 fb_var.xres_virtual = boottime_screen_info.origin_video_cols as u32; 1032 fb_var.yres_virtual = boottime_screen_info.origin_video_lines as u32; 1033 } else { 1034 fb_fix.visual = FbVisual::TrueColor; 1035 fb_var.bits_per_pixel = boottime_screen_info.lfb_depth as u32; 1036 fb_fix.line_length = 1037 (boottime_screen_info.lfb_width as u32) * (fb_var.bits_per_pixel / 8); 1038 fb_var.xres_virtual = boottime_screen_info.lfb_width as u32; 1039 fb_var.yres_virtual = boottime_screen_info.lfb_height as u32; 1040 fb_var.xres = boottime_screen_info.lfb_width as u32; 1041 fb_var.yres = boottime_screen_info.lfb_height as u32; 1042 } 1043 1044 fb_var.red.length = boottime_screen_info.red_size as u32; 1045 fb_var.green.length = boottime_screen_info.green_size as u32; 1046 fb_var.blue.length = boottime_screen_info.blue_size as u32; 1047 1048 fb_var.red.offset = boottime_screen_info.red_pos as u32; 1049 fb_var.green.offset = boottime_screen_info.green_pos as u32; 1050 fb_var.blue.offset = boottime_screen_info.blue_pos as u32; 1051 1052 // TODO: 这里是暂时这样写的，初始化为RGB888格式，后续vesa初始化完善后删掉下面 1053 fb_var.red.offset = 16; 1054 fb_var.green.offset = 8; 1055 fb_var.blue.offset = 0; 1056 1057 if fb_var.bits_per_pixel >= 1 && fb_var.bits_per_pixel <= 8 { 1058 fb_var.red.length = fb_var.bits_per_pixel; 1059 fb_var.green.length = fb_var.bits_per_pixel; 1060 fb_var.blue.length = fb_var.bits_per_pixel; 1061 } 1062 1063 device_manager().device_default_initialize(&(device.clone() as Arc<dyn Device>)); 1064 1065 platform_device_manager() 1066 .device_add(device.clone() as Arc<dyn PlatformDevice>) 1067 .expect("vesa_fb_device_init: platform_device_manager().device_add failed"); 1068 1069 frame_buffer_manager() 1070 .register_fb(device.clone() as Arc<dyn FrameBuffer>) 1071 .expect("vesa_fb_device_init: frame_buffer_manager().register_fb failed"); 1072 1073 // 加入全局fb表 1074 let mut guard = FRAME_BUFFER_SET.write(); 1075 if guard.get(device.fb_id().data() as usize).unwrap().is_some() { 1076 kwarn!( 1077 "vesa_fb_device_init: There is already an element {:?} in the FRAME_BUFFER_SET", 1078 device.fb_id() 1079 ); 1080 } 1081 guard[device.fb_id().data() as usize] = Some(device.clone()); 1082 1083 // 设置vesa fb的状态为运行中 1084 device.inner.lock().fb_state = FbState::Running; 1085 }); 1086 1087 return Ok(()); 1088 } 1089