Function tx_process

pcsx2/DEV9/smap.cpp:120–251

}

void tx_process()
{
	NetPacket pk;
	// We will loop though TX_BD, sending any that are ready
	// stopping once we reach one that isn't ready
	// SMAP_R_TXFIFO_FRAME_CNT is decremented, but otherwise isn't used
	// This seems to match HW behaviour
	u32 cnt = 0;
	while (true)
	{
		smap_bd_t* pbd = ((smap_bd_t*)&dev9.dev9R[SMAP_BD_TX_BASE & 0xffff]) + dev9.txbdi;

		if (!(pbd->ctrl_stat & SMAP_BD_TX_READY))
		{
			break;
		}
		if (pbd->length & 3)
		{
			//spams// emu_printf("WARN : pbd->length not aligned %u\n",pbd->length);
		}

		if (pbd->length > 1514)
		{
			Console.Error("DEV9: SMAP: ERROR : Trying to send packet too big.");
		}
		else
		{
			const u32 base = (pbd->pointer - 0x1000) & 16383;
			DevCon.WriteLn("DEV9: Sending Packet from base %x, size %d", base, pbd->length);

			pk.size = pbd->length;

			if (!(pbd->pointer >= 0x1000))
			{
				Console.Error("DEV9: SMAP: ERROR: odd , !pbd->pointer>0x1000 | 0x%X %u", pbd->pointer, pbd->length);
			}

			// SMAP drivers send a very specfic frame during init, then check SPD_R_INTR_STAT for SMAP_INTR_RXEND | SMAP_INTR_TXEND | SMAP_INTR_TXDNV.
			// SMAP_INTR_TXEND is set normally, SMAP_INTR_RXEND is supposed to be set here, but we currently don't emulate that.
			// SMAP_INTR_TXDNV is set somewhere, unsure where, we only set it in failure (instead of SMAP_INTR_TXEND), but is included in the hack here.
			if (pbd->length == 0x5EA && pbd->pointer == 0x1000)
			{
				u32* ptr = (u32*)&dev9.txfifo[base];

				bool test = true;
				for (u32 i = 0; i < 0x5EA; i += 4)
				{
					if (*ptr++ != i)
					{
						test = false;
						break;
					}
				}
				if (test)
				{
					Console.WriteLn("DEV9: Adapter Detection Hack - Resetting RX/TX");
					_DEV9irq(SMAP_INTR_RXEND | SMAP_INTR_TXDNV, 100);
				}