121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
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#ifndef SOCKS_DEVICE_H_
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#define SOCKS_DEVICE_H_
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#include <socks/queue.h>
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#include <socks/status.h>
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struct device;
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#define BLOCK_DEVICE(dev) ((dev)->dev_type == DEV_TYPE_BLOCK ? &(dev)->blk : NULL);
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#define CHAR_DEVICE(dev) ((dev)->dev_type == DEV_TYPE_CHAR ? &(dev)->chr : NULL);
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#define NET_DEVICE(dev) ((dev)->dev_type == DEV_TYPE_NET ? &(dev)->net : NULL);
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#define INPUT_DEVICE(dev) ((dev)->dev_type == DEV_TYPE_INPUT ? &(dev)->input : NULL);
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enum device_type {
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DEV_TYPE_BLOCK,
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DEV_TYPE_CHAR,
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DEV_TYPE_NET,
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DEV_TYPE_INPUT,
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};
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struct block_device_ops {
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kern_status_t(*read_blocks)(struct device *, size_t, size_t *, void *);
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kern_status_t(*write_blocks)(struct device *, size_t, size_t *, const void *);
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kern_status_t(*ioctl)(struct device *, unsigned int, void *);
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};
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struct net_device_ops {
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kern_status_t(*online)(struct device *);
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kern_status_t(*offline)(struct device *);
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kern_status_t(*transmit)(struct device *, const void *, size_t);
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kern_status_t(*ioctl)(struct device *, unsigned int, void *);
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};
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struct char_device_ops {
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kern_status_t(*read)(struct device *, size_t, size_t *, void *);
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kern_status_t(*write)(struct device *, size_t, size_t *, const void *);
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};
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struct input_device_ops {
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kern_status_t(*ioctl)(struct device *, unsigned int, void *);
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};
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struct bus_device_ops {
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kern_status_t(*scan)(struct device *);
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};
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struct block_device {
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struct block_device_ops *b_ops;
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};
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struct char_device {
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struct char_device_ops *c_ops;
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};
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struct net_device {
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struct net_device_ops *n_ops;
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};
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struct input_device {
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struct input_device_ops *i_ops;
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};
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struct bus_device {
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struct bus_device_ops *b_ops;
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};
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struct device {
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enum device_type dev_type;
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struct device *dev_parent;
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queue_t dev_children;
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queue_entry_t dev_childent;
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void *dev_priv;
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union {
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struct block_device blk;
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struct char_device chr;
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struct net_device net;
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struct input_device input;
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struct bus_device bus;
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};
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};
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extern kern_status_t device_init(void);
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extern kern_status_t set_root_device(struct device *dev);
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extern struct char_device *char_device_create(void);
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extern struct block_device *block_device_create(void);
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extern struct net_device *net_device_create(void);
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extern struct input_device *input_device_create(void);
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extern struct bus_device *bus_device_create(void);
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static inline struct device *char_device_base(struct char_device *dev)
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{
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return (struct device *)((char *)dev - offsetof(struct device, chr));
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}
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static inline struct device *block_device_base(struct block_device *dev)
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{
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return (struct device *)((char *)dev - offsetof(struct device, blk));
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}
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static inline struct device *net_device_base(struct net_device *dev)
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{
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return (struct device *)((char *)dev - offsetof(struct device, net));
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}
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static inline struct device *input_device_base(struct input_device *dev)
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{
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return (struct device *)((char *)dev - offsetof(struct device, input));
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}
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static inline struct device *bus_device_base(struct bus_device *dev)
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{
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return (struct device *)((char *)dev - offsetof(struct device, bus));
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}
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extern kern_status_t device_register(struct device *dev, struct device *parent);
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#endif
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