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