1 use crate::driver::base::{ 2 device::{ 3 bus::{bus_manager, Bus}, 4 driver::Driver, 5 Device, 6 }, 7 subsys::SubSysPrivate, 8 }; 9 use alloc::{ 10 string::{String, ToString}, 11 sync::Arc, 12 }; 13 use system_error::SystemError; 14 15 use super::AcpiManager; 16 17 impl AcpiManager { 18 /// 通过acpi来匹配驱动 19 /// 20 /// 参考 https://code.dragonos.org.cn/xref/linux-6.1.9/drivers/acpi/bus.c#949 21 pub fn driver_match_device( 22 &self, 23 _driver: &Arc<dyn Driver>, 24 _device: &Arc<dyn Device>, 25 ) -> Result<bool, SystemError> { 26 // todo: 27 28 return Ok(false); 29 } 30 31 /// 参考 https://code.dragonos.org.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1286 32 pub(super) fn bus_init(&self) -> Result<(), SystemError> { 33 self.acpi_sysfs_init()?; 34 35 let acpi_bus = AcpiBus::new(); 36 bus_manager() 37 .register(acpi_bus as Arc<dyn Bus>) 38 .expect("acpi_bus register failed"); 39 return Ok(()); 40 } 41 } 42 43 /// ACPI总线 44 /// 45 /// 参考 https://code.dragonos.org.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1072 46 #[derive(Debug)] 47 pub(super) struct AcpiBus { 48 private: SubSysPrivate, 49 } 50 51 impl AcpiBus { 52 pub fn new() -> Arc<Self> { 53 let bus = Arc::new(Self { 54 private: SubSysPrivate::new("acpi".to_string(), None, None, &[]), 55 }); 56 bus.subsystem() 57 .set_bus(Some(Arc::downgrade(&(bus.clone() as Arc<dyn Bus>)))); 58 return bus; 59 } 60 } 61 62 impl Bus for AcpiBus { 63 fn name(&self) -> String { 64 return self.private.subsys().as_kobject().name(); 65 } 66 67 fn dev_name(&self) -> String { 68 self.name() 69 } 70 71 /// 参考 https://code.dragonos.org.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1056 72 fn remove(&self, _device: &Arc<dyn Device>) -> Result<(), SystemError> { 73 todo!("acpi_bus: remove") 74 } 75 76 fn shutdown(&self, _device: &Arc<dyn Device>) { 77 return; 78 } 79 80 fn resume(&self, _device: &Arc<dyn Device>) -> Result<(), SystemError> { 81 return Ok(()); 82 } 83 84 /// 通过acpi来匹配驱动 85 /// 86 /// 参考 https://code.dragonos.org.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1005 87 fn match_device( 88 &self, 89 _device: &Arc<dyn Device>, 90 _driver: &Arc<dyn Driver>, 91 ) -> Result<bool, SystemError> { 92 // todo: 通过acpi来匹配驱动 93 return Ok(false); 94 } 95 96 /// 参考 https://code.dragonos.org.cn/xref/linux-6.1.9/drivers/acpi/bus.c#1019 97 fn probe(&self, _device: &Arc<dyn Device>) -> Result<(), SystemError> { 98 todo!("acpi_bus: probe") 99 } 100 101 fn subsystem(&self) -> &SubSysPrivate { 102 return &self.private; 103 } 104 } 105 106 /// Acpi设备应当实现的trait 107 /// 108 /// 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)] 109 /// 110 /// todo: 仿照linux的acpi_device去设计这个trait 111 /// 112 /// 113 /// 参考 https://code.dragonos.org.cn/xref/linux-6.1.9/include/acpi/acpi_bus.h#364 114 pub trait AcpiDevice: Device {} 115 116 /// Acpi驱动应当实现的trait 117 /// 118 /// 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)] 119 /// 120 /// todo: 仿照linux的acpi_driver去设计这个trait 121 /// 122 /// 参考 https://code.dragonos.org.cn/xref/linux-6.1.9/include/acpi/acpi_bus.h#163 123 pub trait AcpiDriver: Driver {} 124