xref: /DragonOS/kernel/src/driver/video/fbdev/vesafb.rs (revision 7a29d4fcbcd89a226289c7bf541c2c78623de3ad)
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         tty::serial::serial8250::send_to_default_serial8250_port,
32         video::fbdev::base::{fbmem::frame_buffer_manager, FbVisual},
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     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 }
93 
94 impl VesaFb {
95     pub const NAME: &'static str = "vesa_vga";
96     pub fn new() -> Self {
97         return Self {
98             inner: SpinLock::new(InnerVesaFb {
99                 bus: None,
100                 class: None,
101                 driver: None,
102                 kern_inode: None,
103                 parent: None,
104                 kset: None,
105                 kobj_type: None,
106                 device_state: DeviceState::NotInitialized,
107                 pdev_id: 0,
108                 pdev_id_auto: false,
109                 fb_id: FbId::INIT,
110                 fb_device: None,
111                 fb_state: FbState::Suspended,
112             }),
113             kobj_state: LockedKObjectState::new(None),
114         };
115     }
116 }
117 
118 #[derive(Debug)]
119 struct InnerVesaFb {
120     bus: Option<Weak<dyn Bus>>,
121     class: Option<Arc<dyn Class>>,
122     driver: Option<Weak<dyn Driver>>,
123     kern_inode: Option<Arc<KernFSInode>>,
124     parent: Option<Weak<dyn KObject>>,
125     kset: Option<Arc<KSet>>,
126     kobj_type: Option<&'static dyn KObjType>,
127     device_state: DeviceState,
128     pdev_id: i32,
129     pdev_id_auto: bool,
130     fb_id: FbId,
131     fb_device: Option<Arc<FbDevice>>,
132     fb_state: FbState,
133 }
134 
135 impl FrameBuffer for VesaFb {
136     fn fb_id(&self) -> FbId {
137         self.inner.lock().fb_id
138     }
139 
140     fn set_fb_id(&self, id: FbId) {
141         self.inner.lock().fb_id = id;
142     }
143 }
144 
145 impl PlatformDevice for VesaFb {
146     fn pdev_name(&self) -> &str {
147         Self::NAME
148     }
149 
150     fn set_pdev_id(&self, id: i32) {
151         self.inner.lock().pdev_id = id;
152     }
153 
154     fn set_pdev_id_auto(&self, id_auto: bool) {
155         self.inner.lock().pdev_id_auto = id_auto;
156     }
157 
158     fn compatible_table(&self) -> CompatibleTable {
159         todo!()
160     }
161 
162     fn is_initialized(&self) -> bool {
163         self.inner.lock().device_state == DeviceState::Initialized
164     }
165 
166     fn set_state(&self, set_state: DeviceState) {
167         self.inner.lock().device_state = set_state;
168     }
169 }
170 
171 impl Device for VesaFb {
172     fn dev_type(&self) -> DeviceType {
173         DeviceType::Char
174     }
175 
176     fn id_table(&self) -> IdTable {
177         IdTable::new(self.name(), None)
178     }
179 
180     fn bus(&self) -> Option<Weak<dyn Bus>> {
181         self.inner.lock().bus.clone()
182     }
183 
184     fn set_bus(&self, bus: Option<Weak<dyn Bus>>) {
185         self.inner.lock().bus = bus;
186     }
187 
188     fn set_class(&self, class: Option<Arc<dyn Class>>) {
189         self.inner.lock().class = class;
190     }
191 
192     fn driver(&self) -> Option<Arc<dyn Driver>> {
193         self.inner.lock().driver.clone()?.upgrade()
194     }
195 
196     fn set_driver(&self, driver: Option<Weak<dyn Driver>>) {
197         self.inner.lock().driver = driver;
198     }
199 
200     fn is_dead(&self) -> bool {
201         false
202     }
203 
204     fn can_match(&self) -> bool {
205         true
206     }
207 
208     fn set_can_match(&self, _can_match: bool) {}
209 
210     fn state_synced(&self) -> bool {
211         true
212     }
213 }
214 
215 impl KObject for VesaFb {
216     fn as_any_ref(&self) -> &dyn core::any::Any {
217         self
218     }
219 
220     fn set_inode(&self, inode: Option<Arc<KernFSInode>>) {
221         self.inner.lock().kern_inode = inode;
222     }
223 
224     fn inode(&self) -> Option<Arc<KernFSInode>> {
225         self.inner.lock().kern_inode.clone()
226     }
227 
228     fn parent(&self) -> Option<Weak<dyn KObject>> {
229         self.inner.lock().parent.clone()
230     }
231 
232     fn set_parent(&self, parent: Option<Weak<dyn KObject>>) {
233         self.inner.lock().parent = parent;
234     }
235 
236     fn kset(&self) -> Option<Arc<KSet>> {
237         self.inner.lock().kset.clone()
238     }
239 
240     fn set_kset(&self, kset: Option<Arc<KSet>>) {
241         self.inner.lock().kset = kset;
242     }
243 
244     fn kobj_type(&self) -> Option<&'static dyn KObjType> {
245         self.inner.lock().kobj_type
246     }
247 
248     fn set_kobj_type(&self, ktype: Option<&'static dyn KObjType>) {
249         self.inner.lock().kobj_type = ktype;
250     }
251 
252     fn name(&self) -> String {
253         Self::NAME.to_string()
254     }
255 
256     fn set_name(&self, _name: String) {
257         // do nothing
258     }
259 
260     fn kobj_state(&self) -> RwLockReadGuard<KObjectState> {
261         self.kobj_state.read()
262     }
263 
264     fn kobj_state_mut(&self) -> RwLockWriteGuard<KObjectState> {
265         self.kobj_state.write()
266     }
267 
268     fn set_kobj_state(&self, state: KObjectState) {
269         *self.kobj_state.write() = state;
270     }
271 }
272 
273 impl FrameBufferOps for VesaFb {
274     fn fb_open(&self, _user: bool) {
275         todo!()
276     }
277 
278     fn fb_release(&self, _user: bool) {
279         todo!()
280     }
281 
282     fn fb_set_color_register(
283         &self,
284         _regno: u16,
285         _red: u16,
286         _green: u16,
287         _blue: u16,
288     ) -> Result<(), SystemError> {
289         todo!()
290     }
291 
292     fn fb_blank(&self, _blank_mode: BlankMode) -> Result<(), SystemError> {
293         todo!()
294     }
295 
296     fn fb_destroy(&self) {
297         todo!()
298     }
299 
300     fn fb_read(&self, buf: &mut [u8], pos: usize) -> Result<usize, SystemError> {
301         let bp = boot_params().read();
302 
303         let vaddr = bp.screen_info.lfb_virt_base.ok_or(SystemError::ENODEV)?;
304         let size = self.current_fb_fix().smem_len;
305         drop(bp);
306         if pos >= size {
307             return Ok(0);
308         }
309 
310         let pos = pos as i64;
311         let size = size as i64;
312 
313         let len = core::cmp::min(size - pos, buf.len() as i64) as usize;
314 
315         let slice = unsafe { core::slice::from_raw_parts(vaddr.as_ptr::<u8>(), size as usize) };
316         buf[..len].copy_from_slice(&slice[pos as usize..(pos as usize + len)]);
317 
318         return Ok(len);
319     }
320 
321     fn fb_write(&self, buf: &[u8], pos: usize) -> Result<usize, SystemError> {
322         let bp = boot_params().read();
323 
324         let vaddr = bp.screen_info.lfb_virt_base.ok_or(SystemError::ENODEV)?;
325         let size = self.current_fb_fix().smem_len;
326 
327         if pos >= size {
328             return Ok(0);
329         }
330 
331         let pos = pos as i64;
332         let size = size as i64;
333 
334         let len = core::cmp::min(size - pos, buf.len() as i64) as usize;
335 
336         let slice = unsafe { core::slice::from_raw_parts_mut(vaddr.as_ptr::<u8>(), size as usize) };
337         slice[pos as usize..(pos as usize + len)].copy_from_slice(&buf[..len]);
338 
339         return Ok(len);
340     }
341 }
342 
343 impl FrameBufferInfo for VesaFb {
344     fn fb_device(&self) -> Option<Arc<FbDevice>> {
345         self.inner.lock().fb_device.clone()
346     }
347 
348     fn set_fb_device(&self, device: Option<Arc<FbDevice>>) {
349         self.inner.lock().fb_device = device;
350     }
351 
352     fn screen_size(&self) -> usize {
353         todo!()
354     }
355 
356     fn current_fb_var(&self) -> FbVarScreenInfo {
357         VESAFB_DEFINED.read().clone()
358     }
359 
360     fn current_fb_fix(&self) -> FixedScreenInfo {
361         VESAFB_FIX_INFO.read().clone()
362     }
363 
364     fn video_mode(&self) -> Option<&FbVideoMode> {
365         todo!()
366     }
367 
368     fn state(&self) -> FbState {
369         self.inner.lock().fb_state
370     }
371 }
372 
373 #[derive(Debug)]
374 #[cast_to([sync] PlatformDriver)]
375 struct VesaFbDriver {
376     inner: SpinLock<InnerVesaFbDriver>,
377     kobj_state: LockedKObjectState,
378 }
379 
380 impl VesaFbDriver {
381     pub fn new() -> Arc<Self> {
382         let r = Arc::new(Self {
383             inner: SpinLock::new(InnerVesaFbDriver {
384                 ktype: None,
385                 kset: None,
386                 parent: None,
387                 kernfs_inode: None,
388                 devices: Vec::new(),
389                 bus: None,
390                 self_ref: Weak::new(),
391             }),
392             kobj_state: LockedKObjectState::new(None),
393         });
394 
395         r.inner.lock().self_ref = Arc::downgrade(&r);
396 
397         return r;
398     }
399 }
400 
401 #[derive(Debug)]
402 struct InnerVesaFbDriver {
403     ktype: Option<&'static dyn KObjType>,
404     kset: Option<Arc<KSet>>,
405     parent: Option<Weak<dyn KObject>>,
406     kernfs_inode: Option<Arc<KernFSInode>>,
407     devices: Vec<Arc<dyn Device>>,
408     bus: Option<Weak<dyn Bus>>,
409 
410     self_ref: Weak<VesaFbDriver>,
411 }
412 
413 impl VesaFbDriver {
414     const NAME: &'static str = "vesa-framebuffer";
415 }
416 
417 impl PlatformDriver for VesaFbDriver {
418     fn probe(&self, device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> {
419         let device = device
420             .clone()
421             .arc_any()
422             .downcast::<VesaFb>()
423             .map_err(|_| SystemError::EINVAL)?;
424 
425         device.set_driver(Some(self.inner.lock_irqsave().self_ref.clone()));
426 
427         return Ok(());
428     }
429 
430     fn remove(&self, _device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> {
431         todo!()
432     }
433 
434     fn shutdown(&self, _device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> {
435         // do nothing
436         return Ok(());
437     }
438 
439     fn suspend(&self, _device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> {
440         // do nothing
441         return Ok(());
442     }
443 
444     fn resume(&self, _device: &Arc<dyn PlatformDevice>) -> Result<(), SystemError> {
445         todo!()
446     }
447 }
448 
449 impl Driver for VesaFbDriver {
450     fn id_table(&self) -> Option<IdTable> {
451         Some(IdTable::new(VesaFb::NAME.to_string(), None))
452     }
453 
454     fn devices(&self) -> Vec<Arc<dyn Device>> {
455         self.inner.lock().devices.clone()
456     }
457 
458     fn add_device(&self, device: Arc<dyn Device>) {
459         let mut guard = self.inner.lock();
460         // check if the device is already in the list
461         if guard.devices.iter().any(|dev| Arc::ptr_eq(dev, &device)) {
462             return;
463         }
464 
465         guard.devices.push(device);
466     }
467 
468     fn delete_device(&self, device: &Arc<dyn Device>) {
469         let mut guard = self.inner.lock();
470         guard.devices.retain(|dev| !Arc::ptr_eq(dev, device));
471     }
472 
473     fn set_bus(&self, bus: Option<Weak<dyn Bus>>) {
474         self.inner.lock().bus = bus;
475     }
476 
477     fn bus(&self) -> Option<Weak<dyn Bus>> {
478         self.inner.lock().bus.clone()
479     }
480 
481     fn dev_groups(&self) -> &'static [&'static dyn AttributeGroup] {
482         return &[&VesaFbAnonAttributeGroup];
483     }
484 }
485 
486 impl KObject for VesaFbDriver {
487     fn as_any_ref(&self) -> &dyn core::any::Any {
488         self
489     }
490 
491     fn set_inode(&self, inode: Option<Arc<KernFSInode>>) {
492         self.inner.lock().kernfs_inode = inode;
493     }
494 
495     fn inode(&self) -> Option<Arc<KernFSInode>> {
496         self.inner.lock().kernfs_inode.clone()
497     }
498 
499     fn parent(&self) -> Option<Weak<dyn KObject>> {
500         self.inner.lock().parent.clone()
501     }
502 
503     fn set_parent(&self, parent: Option<Weak<dyn KObject>>) {
504         self.inner.lock().parent = parent;
505     }
506 
507     fn kset(&self) -> Option<Arc<KSet>> {
508         self.inner.lock().kset.clone()
509     }
510 
511     fn set_kset(&self, kset: Option<Arc<KSet>>) {
512         self.inner.lock().kset = kset;
513     }
514 
515     fn kobj_type(&self) -> Option<&'static dyn KObjType> {
516         self.inner.lock().ktype
517     }
518 
519     fn set_kobj_type(&self, ktype: Option<&'static dyn KObjType>) {
520         self.inner.lock().ktype = ktype;
521     }
522 
523     fn name(&self) -> String {
524         Self::NAME.to_string()
525     }
526 
527     fn set_name(&self, _name: String) {
528         // do nothing
529     }
530 
531     fn kobj_state(&self) -> RwLockReadGuard<KObjectState> {
532         self.kobj_state.read()
533     }
534 
535     fn kobj_state_mut(&self) -> RwLockWriteGuard<KObjectState> {
536         self.kobj_state.write()
537     }
538 
539     fn set_kobj_state(&self, state: KObjectState) {
540         *self.kobj_state.write() = state;
541     }
542 }
543 
544 #[derive(Debug)]
545 struct VesaFbAnonAttributeGroup;
546 
547 impl AttributeGroup for VesaFbAnonAttributeGroup {
548     fn name(&self) -> Option<&str> {
549         None
550     }
551 
552     fn attrs(&self) -> &[&'static dyn Attribute] {
553         &[&AnonAttrPhysAddr as &'static dyn Attribute]
554     }
555 
556     fn is_visible(
557         &self,
558         _kobj: Arc<dyn KObject>,
559         attr: &'static dyn Attribute,
560     ) -> Option<ModeType> {
561         Some(attr.mode())
562     }
563 }
564 
565 #[derive(Debug)]
566 struct AnonAttrPhysAddr;
567 
568 impl Attribute for AnonAttrPhysAddr {
569     fn name(&self) -> &str {
570         "smem_start"
571     }
572 
573     fn mode(&self) -> ModeType {
574         ModeType::S_IRUGO
575     }
576 
577     fn support(&self) -> SysFSOpsSupport {
578         SysFSOpsSupport::SHOW
579     }
580 
581     fn show(&self, _kobj: Arc<dyn KObject>, buf: &mut [u8]) -> Result<usize, SystemError> {
582         sysfs_emit_str(
583             buf,
584             format!(
585                 "0x{:x}\n",
586                 VESAFB_FIX_INFO
587                     .read()
588                     .smem_start
589                     .unwrap_or(PhysAddr::new(0))
590                     .data()
591             )
592             .as_str(),
593         )
594     }
595 }
596 
597 #[unified_init(INITCALL_DEVICE)]
598 pub fn vesa_fb_driver_init() -> Result<(), SystemError> {
599     let driver = VesaFbDriver::new();
600 
601     platform_driver_manager().register(driver)?;
602 
603     return Ok(());
604 }
605 
606 /// 在内存管理初始化之前,初始化vesafb
607 pub fn vesafb_early_init() -> Result<VirtAddr, SystemError> {
608     let mut _reserved: u32 = 0;
609 
610     let mut fb_info: MaybeUninit<multiboot_tag_framebuffer_info_t> = MaybeUninit::uninit();
611     //从multiboot2中读取帧缓冲区信息至fb_info
612 
613     // todo: 换成rust的,并且检测是否成功获取
614     unsafe {
615         multiboot2_iter(
616             Some(multiboot2_get_Framebuffer_info),
617             fb_info.as_mut_ptr() as usize as *mut c_void,
618             &mut _reserved as *mut c_uint,
619         )
620     };
621     unsafe { fb_info.assume_init() };
622     let fb_info: multiboot_tag_framebuffer_info_t = unsafe { core::mem::transmute(fb_info) };
623 
624     // todo: 判断是否有vesa帧缓冲区,这里暂时直接设置true
625     HAS_VESA_FB.store(true, core::sync::atomic::Ordering::SeqCst);
626 
627     let width = fb_info.framebuffer_width;
628     let height = fb_info.framebuffer_height;
629 
630     let mut boot_params_guard = boot_params().write();
631     let boottime_screen_info = &mut boot_params_guard.screen_info;
632 
633     boottime_screen_info.is_vga = true;
634 
635     boottime_screen_info.lfb_base = PhysAddr::new(fb_info.framebuffer_addr as usize);
636 
637     if fb_info.framebuffer_type == 2 {
638         //当type=2时,width与height用字符数表示,故depth=8
639         boottime_screen_info.origin_video_cols = width as u8;
640         boottime_screen_info.origin_video_lines = height as u8;
641         boottime_screen_info.video_type = BootTimeVideoType::Mda;
642         boottime_screen_info.lfb_depth = 8;
643     } else {
644         //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
645         boottime_screen_info.lfb_width = width;
646         boottime_screen_info.lfb_height = height;
647         boottime_screen_info.video_type = BootTimeVideoType::Vlfb;
648         boottime_screen_info.lfb_depth = fb_info.framebuffer_bpp as u8;
649     }
650 
651     boottime_screen_info.lfb_size =
652         (width * height * ((fb_info.framebuffer_bpp as u32 + 7) / 8)) as usize;
653 
654     // let buf_vaddr = VirtAddr::new(0xffff800003200000);
655     let buf_vaddr = VirtAddr::new(
656         crate::include::bindings::bindings::SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE as usize
657             + FRAME_BUFFER_MAPPING_OFFSET as usize,
658     );
659     boottime_screen_info.lfb_virt_base = Some(buf_vaddr);
660 
661     let init_text = "Video driver to map.\n\0";
662     send_to_default_serial8250_port(init_text.as_bytes());
663 
664     // 地址映射
665     let paddr = PhysAddr::new(fb_info.framebuffer_addr as usize);
666     let count =
667         PageFrameCount::new(page_align_up(boottime_screen_info.lfb_size) / MMArch::PAGE_SIZE);
668     unsafe { pseudo_map_phys(buf_vaddr, paddr, count) };
669     return Ok(buf_vaddr);
670 }
671 
672 #[unified_init(INITCALL_DEVICE)]
673 fn vesa_fb_device_init() -> Result<(), SystemError> {
674     // 如果没有vesa帧缓冲区,直接返回
675     if !HAS_VESA_FB.load(core::sync::atomic::Ordering::SeqCst) {
676         return Ok(());
677     }
678 
679     static INIT: Once = Once::new();
680     INIT.call_once(|| {
681         kinfo!("vesa fb device init");
682 
683         let mut fix_info_guard = VESAFB_FIX_INFO.write_irqsave();
684         let mut var_info_guard = VESAFB_DEFINED.write_irqsave();
685 
686         let boot_params_guard = boot_params().read();
687         let boottime_screen_info = &boot_params_guard.screen_info;
688 
689         fix_info_guard.smem_start = Some(boottime_screen_info.lfb_base);
690         fix_info_guard.smem_len = boottime_screen_info.lfb_size;
691 
692         if boottime_screen_info.video_type == BootTimeVideoType::Mda {
693             fix_info_guard.visual = FbVisual::Mono10;
694             var_info_guard.bits_per_pixel = 8;
695             fix_info_guard.line_length = (boottime_screen_info.origin_video_cols as u32)
696                 * (var_info_guard.bits_per_pixel / 8);
697             var_info_guard.xres_virtual = boottime_screen_info.origin_video_cols as u32;
698             var_info_guard.yres_virtual = boottime_screen_info.origin_video_lines as u32;
699         } else {
700             fix_info_guard.visual = FbVisual::TrueColor;
701             var_info_guard.bits_per_pixel = boottime_screen_info.lfb_depth as u32;
702             fix_info_guard.line_length =
703                 (boottime_screen_info.lfb_width as u32) * (var_info_guard.bits_per_pixel / 8);
704             var_info_guard.xres_virtual = boottime_screen_info.lfb_width as u32;
705             var_info_guard.yres_virtual = boottime_screen_info.lfb_height as u32;
706         }
707 
708         drop(var_info_guard);
709         drop(fix_info_guard);
710 
711         let device = Arc::new(VesaFb::new());
712         device_manager().device_default_initialize(&(device.clone() as Arc<dyn Device>));
713 
714         platform_device_manager()
715             .device_add(device.clone() as Arc<dyn PlatformDevice>)
716             .expect("vesa_fb_device_init: platform_device_manager().device_add failed");
717 
718         frame_buffer_manager()
719             .register_fb(device.clone() as Arc<dyn FrameBuffer>)
720             .expect("vesa_fb_device_init: frame_buffer_manager().register_fb failed");
721 
722         // 设置vesa fb的状态为运行中
723         device.inner.lock().fb_state = FbState::Running;
724     });
725 
726     return Ok(());
727 }
728