把pci驱动的读取acpi mcfg的代码，调整为从新的acpi驱动来读取 (#413)

* 把pci驱动的读取acpi mcfg的代码，调整为从新的acpi驱动来读取

kernel/src/driver/acpi/mod.rs

@@ -21,7 +21,6 @@ extern crate acpi;
 pub mod bus;
 mod c_adapter;
 pub mod glue;
-pub mod old;
 pub mod pmtmr;
 mod sysfs;
 

kernel/src/driver/acpi/old.rs

@@ -1,27 +0,0 @@
-use crate::driver::pci::pci::SegmentGroupNumber;
-use crate::include::bindings::bindings::acpi_system_description_table_header_t;
-use core::ptr::{slice_from_raw_parts_mut, NonNull};
-// MCFG表中的Segement配置部分，开始位置为44+16*n
-#[repr(C, packed)]
-pub struct SegementConfigurationSpace {
-    pub base_address: u64,
-    pub segement_group_number: SegmentGroupNumber,
-    pub bus_begin: u8,
-    pub bus_end: u8,
-    pub reverse: u32,
-}
-
-/// @brief 获取Segement_Configuration_Space的数量并返回对应数量的Segement_Configuration_Space的切片指针
-/// @param head acpi_system_description_table_header_t的指针
-/// @return NonNull<[Segement_Configuration_Space]>
-pub fn mcfg_find_segment(
-    head: NonNull<acpi_system_description_table_header_t>,
-) -> NonNull<[SegementConfigurationSpace]> {
-    let table_length = unsafe { (*head.as_ptr()).Length };
-    let number_of_segments = ((table_length - 44) / 16) as u16;
-    NonNull::new(slice_from_raw_parts_mut(
-        (head.as_ptr() as usize + 44) as *mut _,
-        number_of_segments as usize,
-    ))
-    .unwrap()
-}

kernel/src/driver/net/virtio_net.rs

@@ -15,8 +15,7 @@ use crate::{
             kobject::{KObjType, KObject, KObjectState},
         },
         virtio::virtio_impl::HalImpl,
-    },
-    kdebug, kerror, kinfo,
+    }, kerror, kinfo,
     libs::spinlock::SpinLock,
     net::{generate_iface_id, NET_DRIVERS},
     syscall::SystemError,