include/tinyx/device.h

   1 #ifndef __TINYX_DEVICE_H
   2 #define __TINYX_DEVICE_H
   3
   4 #include <tinyx/list.h>
   5
   6 struct bus_type;
   7 struct device_driver;
   8 struct device;
   9
  10 struct resource_mem {
  11         unsigned long   start;
  12         unsigned long   end;
  13 };
  14
  15 struct resource_irq {
  16         unsigned int    start;
  17 };
  18
  19 struct resource {
  20         union {
  21                 struct resource_mem mem;
  22                 struct resource_irq irq;
  23         };
  24 };
  25
  26 struct bus_type {
  27         struct list_head        queue;
  28         unsigned int            type;
  29         void                    *private_data;
  30
  31         int (*probe) (struct bus_type *bus);
  32         int (*remove) (struct bus_type *bus);
  33         int (*match) (struct bus_type *bus,
  34                       struct device *dev, struct device_driver *drv);
  35
  36         /* These write* and read* exists in order to avoid if's
  37          * inside critial buses. */
  38         void (*writeb) (struct device *dev,
  39                         unsigned char val, unsigned long addr);
  40         void (*writew) (struct device *dev,
  41                         unsigned int val, unsigned long addr);
  42         void (*writel) (struct device *dev,
  43                         unsigned long val, unsigned long addr);
  44
  45         unsigned char (*readb) (struct device *dev, unsigned long addr);
  46         unsigned int (*readw) (struct device *dev, unsigned long addr);
  47         unsigned long (*readl) (struct device *dev, unsigned long addr);
  48
  49         void (*ioctl) (struct device *dev, void *data, int type);
  50 };
  51
  52 struct device_driver {
  53         struct list_head        queue;
  54         const char              *name;
  55
  56         int (*probe) (struct device *dev);
  57         int (*remove) (struct device *dev);
  58 };
  59
  60 struct device {
  61         struct list_head        queue;
  62         const char              *name;
  63         int                     id;
  64         struct device_driver    *drv;
  65         struct bus_type         *bus;
  66         void                    *private_data;
  67         struct resource         *res;
  68 };
  69
  70 int register_bus_type(struct bus_type *bus);
  71 int register_device_driver(struct device_driver *drv);
  72 int register_device(struct device *dev, struct bus_type *bus);
  73
  74 #endif /* __TINYX_DEVICE_H */