feat:(riscv/intr) 实现riscv plic驱动,能处理外部中断 (#799)

* feat:(riscv/intr) 实现riscv plic驱动,能处理外部中断

- 实现riscv plic驱动,能处理外部中断
- 能收到virtio-blk的中断
- 实现fasteoi interrupt handler

kernel/crates/bitmap/src/alloc_bitmap.rs

@@ -20,6 +20,12 @@ impl AllocBitmap {
             core: BitMapCore::new(),
         }
     }
+
+    pub fn bitand_assign(&mut self, rhs: &Self) {
+        for i in 0..rhs.data.len() {
+            self.data[i] &= rhs.data[i];
+        }
+    }
 }
 
 impl BitMapOps<usize> for AllocBitmap {
@@ -111,8 +117,8 @@ impl BitMapOps<usize> for AllocBitmap {
     }
 }
 
-impl BitAnd for AllocBitmap {
-    type Output = Self;
+impl BitAnd for &AllocBitmap {
+    type Output = AllocBitmap;
 
     fn bitand(self, rhs: Self) -> Self::Output {
         let mut result = AllocBitmap::new(self.elements);
@@ -122,3 +128,11 @@ impl BitAnd for AllocBitmap {
         result
     }
 }
+
+impl BitAnd for AllocBitmap {
+    type Output = AllocBitmap;
+
+    fn bitand(self, rhs: Self) -> Self::Output {
+        &self & &rhs
+    }
+}

kernel/crates/bitmap/tests/alloc-bitmap.rs

@@ -663,3 +663,23 @@ fn test_alloc_bitmap_bitand_128() {
     assert_eq!(bitmap3.first_false_index(), Some(2));
     assert_eq!(bitmap3.last_index(), Some(67));
 }
+
+#[test]
+fn test_alloc_bitmap_bitand_assign_128() {
+    let mut bitmap = AllocBitmap::new(128);
+    bitmap.set_all(true);
+
+    let mut bitmap2 = AllocBitmap::new(128);
+
+    bitmap2.set(0, true);
+    bitmap2.set(1, true);
+    bitmap2.set(67, true);
+
+    bitmap.bitand_assign(&bitmap2);
+
+    assert_eq!(bitmap.len(), 128);
+    assert_eq!(bitmap.size(), 16);
+    assert_eq!(bitmap.first_index(), Some(0));
+    assert_eq!(bitmap.first_false_index(), Some(2));
+    assert_eq!(bitmap.last_index(), Some(67));
+}