public virtual void WriteDoubleWord(long offset, uint value)
{
//if (offset < 0x800) return;
//offset -= 0x800;
int pci_num = (int)(offset / 0x800);
if (pci_num > 3)
{
return;
}
if (!_info[pci_num])
{
return;
}
PCIInfo linfo = info[pci_num];
offset -= pci_num * 0x800;
if ((offset >= 0x10) && (offset < 0x2c))
{
uint bar_id = (uint)((offset - 0x10) / 4);
if (value == 0xFFFFFFFF)
{
linfo.BAR[bar_id] = linfo.BAR_len[bar_id];
}
else
{
linfo.BAR[bar_id] = value;
}
}
}
public virtual uint ReadDoubleWord(long offset)
{
//if (offset < 0x800) return 0;
//offset -= 0x800;
int pci_num = (int)(offset / 0x800);
if (pci_num > 3)
{
return(0);
}
if (!_info[pci_num])
{
return(0);
}
PCIInfo linfo = info[pci_num];
offset -= pci_num * 0x800;
if (offset == 0x00)
{
return((uint)linfo.vendor_id + (uint)(linfo.device_id << 16));
}
if (offset == 0x04)
{
return((1 << 25) | (1 << 1) | (1 << 0)); // cmd ?
}
if (offset == 0x08)
{
return((uint)(linfo.device_class << 16)); // class
}
if (offset == 0x0c)
{
return(0x8); // ?
}
if ((offset >= 0x10) && (offset < 0x2c))
{
uint bar_id = (uint)((offset - 0x10) / 4);
return(linfo.BAR[bar_id]);
}
if (offset == 0x2c)
{
return((uint)linfo.sub_vendor_id + (uint)(linfo.sub_device_id << 16));
}
if (offset == 0x30)
{
return(0x1); // rom ?
}
if (offset == 0x3c)
{
return((uint)((0x1 << 8) | (24 + pci_num))); // slot 24 pin 1 (pci0), slot 25 pin 1 (pci1) ...
}
if (offset == 0x34)
{
return(0x1); // ?
}
return(0);
}
public VersatilePCI(Machine machine) : base(machine)
{
info = new PCIInfo[4];
_info = new bool[4];
int i;
for (i = 0; i < 4; i++)
{
_info[i] = false;
}
}
public uint ReadDoubleWordIO(long offset)
{
this.Log(LogLevel.Noisy, "readIO {0:X}", offset);
// (1) search for pci slot and bar no
int found = -1;
int bar_no = -1;
for (int c = 0; c < 3; c++)
{
if (!_info[c])
{
continue;
}
for (int i = 0; i < 8; i++)
{
if (info[c].BAR_len[i] == 0)
{
continue;
}
if ((offset >= (info[c].BAR[i] & 0x0FFFFFFF)) && (offset < ((info[c].BAR[i] & 0xFFFFFFF) + info[c].BAR_len[i])))
{
found = c;
bar_no = i;
break;
}
}
}
if (found == -1)
{
return(0);
}
// (2) forward read
PCIInfo linfo = info[found];
offset -= (linfo.BAR[bar_no] & 0xFFFFFFF);
IPCIPeripheral pci_device = GetByAddress(found);
return(pci_device.ReadDoubleWordPCI((uint)bar_no, offset));
}
public void WriteDoubleWordIO(long offset, uint value)
{
this.Log(LogLevel.Noisy, "writeIO {0:X}, value 0x{1:X}", offset, value);
int found = -1;
int bar_no = -1;
for (int c = 0; c < 3; c++)
{
if (!_info[c])
{
continue;
}
for (int i = 0; i < 8; i++)
{
if (info[c].BAR_len[i] == 0)
{
continue;
}
if ((offset >= (info[c].BAR[i] & 0x0FFFFFFF)) && (offset < ((info[c].BAR[i] & 0xFFFFFFF) + info[c].BAR_len[i])))
{
found = c;
bar_no = i;
break;
}
}
}
if (found == -1)
{
return;
}
PCIInfo linfo = info[found];
offset -= (linfo.BAR[bar_no] & 0xFFFFFFF);
IPCIPeripheral pci_device = GetByAddress(found);
pci_device.WriteDoubleWordPCI((uint)bar_no, offset, value);
}