* Copyright 2013, Jérôme Duval, korli@users.berlios.de.
* Distributed under the terms of the MIT License.
*/
#ifndef VIRTIO_RNG_PRIVATE_H
#define VIRTIO_RNG_PRIVATE_H
#include <condition_variable.h>
#include <dpc.h>
#include <lock.h>
#include "random.h"
#include <virtio.h>
#ifdef TRACE_VIRTIO_RNG
# define TRACE(x...) dprintf("virtio_rng: " x)
#else
# define TRACE(x...) ;
#endif
#define ERROR(x...) dprintf("\33[33mvirtio_rng:\33[0m " x)
#define CALLED() TRACE("CALLED %s\n", __PRETTY_FUNCTION__)
extern device_manager_info* gDeviceManager;
extern random_for_controller_interface *gRandom;
extern dpc_module_info *gDPC;
class VirtioRNGDevice {
public:
VirtioRNGDevice(device_node* node);
~VirtioRNGDevice();
status_t InitCheck();
protected:
static int32 HandleTimerHook(struct timer* timer);
static void HandleDPC(void* arg);
private:
static void _RequestCallback(void* driverCookie,
void *cookie);
void _RequestInterrupt();
status_t _Enqueue();
virtio_device_interface* fVirtio;
virtio_device* fVirtioDevice;
status_t fStatus;
uint64 fFeatures;
::virtio_queue fVirtioQueue;
spinlock fInterruptLock;
ConditionVariable fInterruptCondition;
bool fExpectsInterrupt;
timer fTimer;
void* fDPCHandle;
};
#endif
