#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/uio_driver.h>

struct uio_info kpart_info = {
  .name = "kpart",
  .version = "0.1",
  .irq = UIO_IRQ_NONE,
};

static int drv_kpart_probe(struct device *dev);
static int drv_kpart_remove(struct device *dev);
static struct device_driver uio_dummy_driver = {
  .name   = "kpart",
  .bus    = &platform_bus_type,
  .probe  = drv_kpart_probe,
  .remove = drv_kpart_remove,
};

static int drv_kpart_probe(struct device *dev)
{
  printk("drv_kpart_probe( %p )\n", dev );
  kpart_info.mem[0].addr = (unsigned long)kmalloc(512,GFP_KERNEL);
  if( kpart_info.mem[0].addr==0 )
      return -ENOMEM;
  kpart_info.mem[0].memtype = UIO_MEM_LOGICAL;
  kpart_info.mem[0].size =512;
  if( uio_register_device(dev,&kpart_info) )
      return -ENODEV;
  return 0;
}

static int drv_kpart_remove(struct device *dev)
{
  uio_unregister_device(&kpart_info);
  return 0;
}

static struct platform_device *uio_dummy_device;
static int __init uio_kpart_init(void)
{
  uio_dummy_device = platform_device_register_simple("kpart", -1, NULL, 0);

  return driver_register(&uio_dummy_driver);
}

static void __exit uio_kpart_exit(void)
{
  platform_device_unregister(uio_dummy_device);
  driver_unregister(&uio_dummy_driver);
}

module_init( uio_kpart_init );
module_exit( uio_kpart_exit );

MODULE_LICENSE("GPL");