1 use alloc::{ 2 string::{String, ToString}, 3 sync::{Arc, Weak}, 4 }; 5 6 use crate::{ 7 driver::base::{ 8 device::{ 9 bus::{bus_manager, Bus}, 10 driver::Driver, 11 Device, 12 }, 13 subsys::SubSysPrivate, 14 }, 15 syscall::SystemError, 16 }; 17 18 use super::AcpiManager; 19 20 impl AcpiManager { 21 /// 通过acpi来匹配驱动 22 /// 23 /// 参考 https://opengrok.ringotek.cn/xref/linux-6.1.9/drivers/acpi/bus.c#949 24 pub fn driver_match_device( 25 &self, 26 _driver: &Arc<dyn Driver>, 27 _device: &Arc<dyn Device>, 28 ) -> Result<bool, SystemError> { 29 // todo: 30 31 return Ok(false); 32 } 33 34 /// 参考 https://opengrok.ringotek.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1286 35 pub(super) fn bus_init(&self) -> Result<(), SystemError> { 36 self.acpi_sysfs_init()?; 37 38 let acpi_bus = AcpiBus::new(); 39 bus_manager() 40 .register(acpi_bus as Arc<dyn Bus>) 41 .expect("acpi_bus register failed"); 42 return Ok(()); 43 } 44 } 45 46 /// ACPI总线 47 /// 48 /// 参考 https://opengrok.ringotek.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1072 49 #[derive(Debug)] 50 pub(super) struct AcpiBus { 51 private: SubSysPrivate, 52 } 53 54 impl AcpiBus { 55 pub fn new() -> Arc<Self> { 56 let default_weak: Weak<Self> = Weak::new(); 57 let bus = Arc::new(Self { 58 private: SubSysPrivate::new("acpi".to_string(), default_weak, &[]), 59 }); 60 bus.subsystem() 61 .set_bus(Arc::downgrade(&(bus.clone() as Arc<dyn Bus>))); 62 return bus; 63 } 64 } 65 66 impl Bus for AcpiBus { 67 fn name(&self) -> String { 68 return self.private.subsys().as_kobject().name(); 69 } 70 71 fn dev_name(&self) -> String { 72 self.name() 73 } 74 75 /// 参考 https://opengrok.ringotek.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1056 76 fn remove(&self, _device: &Arc<dyn Device>) -> Result<(), SystemError> { 77 todo!("acpi_bus: remove") 78 } 79 80 fn shutdown(&self, _device: &Arc<dyn Device>) { 81 return; 82 } 83 84 fn resume(&self, _device: &Arc<dyn Device>) -> Result<(), SystemError> { 85 return Ok(()); 86 } 87 88 /// 通过acpi来匹配驱动 89 /// 90 /// 参考 https://opengrok.ringotek.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1005 91 fn match_device( 92 &self, 93 _device: &Arc<dyn Device>, 94 _driver: &Arc<dyn Driver>, 95 ) -> Result<bool, SystemError> { 96 // todo: 通过acpi来匹配驱动 97 return Ok(false); 98 } 99 100 /// 参考 https://opengrok.ringotek.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1019 101 fn probe(&self, _device: &Arc<dyn Device>) -> Result<(), SystemError> { 102 todo!("acpi_bus: probe") 103 } 104 105 fn subsystem(&self) -> &SubSysPrivate { 106 return &self.private; 107 } 108 } 109 110 /// Acpi设备应当实现的trait 111 /// 112 /// 所有的实现了 AcpiDevice trait的结构体，都应该在结构体上方标注`#[cast_to([sync] AcpiDevice)] 113 /// 114 /// todo: 仿照linux的acpi_device去设计这个trait 115 /// 116 /// 117 /// 参考 https://opengrok.ringotek.cn/xref/linux-6.1.9/include/acpi/acpi_bus.h#364 118 pub trait AcpiDevice: Device {} 119 120 /// Acpi驱动应当实现的trait 121 /// 122 /// 所有的实现了 AcpiDriver trait的结构体，都应该在结构体上方标注`#[cast_to([sync] AcpiDriver)] 123 /// 124 /// todo: 仿照linux的acpi_driver去设计这个trait 125 /// 126 /// 参考 https://opengrok.ringotek.cn/xref/linux-6.1.9/include/acpi/acpi_bus.h#163 127 pub trait AcpiDriver: Driver {} 128