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include_lib/system/device/device.h

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+#ifndef CHRDEV_H
+#define CHRDEV_H
+
+
+#include "generic/typedef.h"
+#include "generic/list.h"
+//#include "generic/ioctl.h"
+#include "generic/atomic.h"
+//#include "sys/task.h"
+#include "device/ioctl_cmds.h"
+
+
+struct dev_node;
+struct device;
+
+
+/**@struct  device_operations
+  * @brief  device_operations结构体 \n
+  * otg设备执行哪种类型的操作
+  */
+struct device_operations {
+    bool (*online)(const struct dev_node *node); ///<设备在线状态查询
+    int (*init)(const struct dev_node *node, void *); ///<设备初始化
+    int (*open)(const char *name, struct device **device, void *arg); ///<设备开启
+    int (*read)(struct device *device, void *buf, u32 len, u32); ///<读操作
+    int (*write)(struct device *device, void *buf, u32 len, u32); ///<写操作
+    int (*seek)(struct device *device, u32 offset, int orig); ///<设备搜索
+    int (*ioctl)(struct device *device, u32 cmd, u32 arg); ///<I/O控制
+    int (*close)(struct device *device); ///<设备关闭
+};
+
+struct dev_node {
+    const char *name;
+    const struct device_operations *ops;
+    void *priv_data;
+};
+
+
+struct device {
+    atomic_t ref;
+    void *private_data;
+    const struct device_operations *ops;
+    void *platform_data;
+    void *driver_data;
+};
+
+
+#define REGISTER_DEVICE(node) \
+    const struct dev_node node sec(.device)
+
+#define REGISTER_DEVICES(node) \
+    const struct dev_node node[] sec(.device)
+
+
+int devices_init();
+
+bool dev_online(const char *name);
+
+void *dev_open(const char *name, void *arg);
+
+
+int dev_read(void *device, void *buf, u32 len);
+
+
+int dev_write(void *device, void *buf, u32 len);
+
+
+int dev_seek(void *device, u32 offset, int orig);
+
+
+int dev_ioctl(void *device, int cmd, u32 arg);
+
+
+int dev_close(void *device);
+
+
+int dev_bulk_read(void *_device, void *buf, u32 offset, u32 len);
+
+int dev_bulk_write(void *_device, void *buf, u32 offset, u32 len);
+
+#endif
+
+