/*  Intel(R) E1000 Driver
    Author: TomAwezome

    Driver is based on:
    -   Linux E1000 implementation
    -   01000101's example E1000 driver
    -   OSDev Intel(R) E1000 documentation
    -   Intel(R) 8254x family datasheet
    -   any other useful sources.

    Guidelines:
    -   Magic numbers are bad. #defines are good.
    -   Understandability over LOC.
    -   Clear documentation.
*/

// TODO: WIP

class CE1000
{
    CPCIDev *pci;

    U8  mac_address[6];

} e1000; // e1000 is the global variable we store all of this into.

CPCIDev *E1000PCIDevFind()
{// Find and return E1000 card as a CPCIDev pointer.

    return PCIDevFind(,, PCIV_E1000, PCID_82545EM);
}

U0 EthernetFrameFinish(I64 de_index)
{//Alias for driver Finish TX function.
    //E1000TransmitPacketFinish(de_index);
    no_warn de_index;
    NetErr("TODO E1000");
}

/*
U0 PCIInterruptsReroute(I64 base)
{ // todo: comments explaining process, maybe better var names
    I64  i;
    U8  *da = dev.uncached_alias + IOAPIC_REG;
    U32 *_d = dev.uncached_alias + IOAPIC_DATA;

    for (i = 0; i < 4; i++)
    {
        *da = IOREDTAB + i * 2 + 1;
        *_d = dev.mp_apic_ids[INT_DEST_CPU] << 24;
        *da = IOREDTAB + i * 2;
        *_d = 0x4000 + base + i;
    }
}


U0 E1000InterruptsSetup()
{
//  PCIInterruptsReroute(I_E10000);
    NetErr("TODO E1000");
}
*/

U0 E1000Init()
{
    MemSet(&e1000, 0, sizeof(CE1000)); // e1000 global var will hold member data the driver uses often.

    e1000.pci = E1000PCIDevFind;
    if (!e1000.pci)
        return; // if we don't find the card, quit.

    "\nE1000 driver WIP\n\n";
    NetErr("TODO E1000");
}

I64 EthernetFrameAllocate(U8 **packet_buffer_out,
                          U8 *source_address,
                          U8 *destination_address,
                          U16 ethertype,
                          I64 packet_length)
{
    no_warn packet_buffer_out, source_address, destination_address, ethertype, packet_length;
    NetErr("TODO E1000");
    return -1;
}

U8 *EthernetMACGet()
{
    NetErr("TODO E1000");
    return e1000.mac_address;
}

U0 NetStop()
{

}

U0 NetStart()
{

}

E1000Init;