软中断处理机制

kernel/exception/softirq.c

@@ -0,0 +1,65 @@
+#include "softirq.h"
+#include <common/kprint.h>
+
+void set_softirq_status(uint64_t status)
+{
+    softirq_status |= status;
+}
+
+uint64_t get_softirq_status()
+{
+    return softirq_status;
+}
+
+/**
+ * @brief 软中断注册函数
+ *
+ * @param irq_num 软中断号
+ * @param action 响应函数
+ * @param data 响应数据结构体
+ */
+void register_softirq(uint32_t irq_num, void (*action)(void *data), void *data)
+{
+    softirq_vector[irq_num].action = action;
+    softirq_vector[irq_num].data = data;
+}
+
+/**
+ * @brief 卸载软中断
+ *
+ * @param irq_num 软中断号
+ */
+void unregister_softirq(uint32_t irq_num)
+{
+    softirq_vector[irq_num].action = NULL;
+    softirq_vector[irq_num].data = NULL;
+}
+
+/**
+ * @brief 软中断处理程序
+ * 
+ */
+void do_softirq()
+{
+    
+    sti();
+    for(uint32_t i=0;i<MAX_SOFTIRQ_NUM&&softirq_status;++i)
+    {
+        if(softirq_status&(1<<i))
+        {
+            softirq_vector[i].action(softirq_vector[i].data);
+            softirq_status &= (~(1<<i));
+        }
+    }
+    
+
+    cli();
+}
+
+void softirq_init()
+{
+    softirq_status = 0;
+    memset(softirq_vector, 0, sizeof(struct softirq_t) * MAX_SOFTIRQ_NUM);
+}
+
+