Rtl8139.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef RTL8139_H
#define RTL8139_H

#include "pedigree/kernel/machine/Device.h"
#include "pedigree/kernel/machine/IrqHandler.h"
#include "pedigree/kernel/machine/Network.h"
#include "pedigree/kernel/process/Semaphore.h"
#include "pedigree/kernel/process/Thread.h"
#include "pedigree/kernel/processor/IoBase.h"
#include "pedigree/kernel/processor/IoPort.h"
#include "pedigree/kernel/processor/MemoryRegion.h"
#include "pedigree/kernel/processor/PhysicalMemoryManager.h"
#include "pedigree/kernel/processor/types.h"

#define RTL8139_VENDOR_ID 0x10ec
#define RTL8139_DEVICE_ID 0x8139

class Rtl8139 : public Network, public IrqHandler
{
  public:
    Rtl8139(Network *pDev);
    ~Rtl8139();

    virtual void getName(String &str)
    {
        str = "rtl8139";
    }

    virtual bool send(size_t nBytes, uintptr_t buffer);

    virtual bool setStationInfo(StationInfo info);

    virtual StationInfo getStationInfo();

    virtual bool isConnected();

    // IRQ handler callback.
    virtual bool irq(irq_id_t number, InterruptState &state);

    IoBase *m_pBase;

  private:
    void recv();

    void reset();

    struct packet
    {
        uintptr_t ptr;
        size_t len;
    };

    StationInfo m_StationInfo;

    uint32_t m_RxCurr;
    uint8_t m_TxCurr;

    volatile bool m_RxLock;
    Spinlock m_TxLock;

    uint8_t *m_pRxBuffVirt;
    uint8_t *m_pTxBuffVirt;

    uintptr_t m_pRxBuffPhys;
    uintptr_t m_pTxBuffPhys;

    MemoryRegion m_RxBuffMR;
    MemoryRegion m_TxBuffMR;

    Rtl8139(const Rtl8139 &);
    void operator=(const Rtl8139 &);
};

#endif