/** Stop this processor. */
public void release() {
cmdBlock.release();
ctrlBlock.release();
}
/** Create a new instance */
protected DefaultIDEIO(Device device, boolean primary)
throws IllegalArgumentException, DriverException, ResourceNotFreeException {
int cmdBlockStart = (primary ? IDE0_START_PORT : IDE1_START_PORT);
int ctrlBlockStart = cmdBlockStart + HIGH_OFFSET;
int cmdBlockSize = IDE_NR_PORTS;
int ctrlBlockSize = IDE_NR_HIGH_PORTS;
int altStatusPort = ctrlBlockStart + R8_ALTSTATUS_OFFSET;
int irq = (primary ? IDE0_IRQ : IDE1_IRQ);
boolean nativeMode = false;
// Detect PCI IDE Controller, look for enhanced mode
if (device instanceof PCIDevice) {
final PCIDevice pciDev = (PCIDevice) device;
final PCIDeviceConfig pciCfg = pciDev.getConfig();
final int pIntf = pciCfg.getMinorClass();
final int progMask = 0x02 | 0x08;
final int enhModeMask = 0x01 | 0x04;
if ((pIntf & progMask) == progMask) {
// Mode is programmable, set enhanced mode
// pciCfg.setMinorClass(pIntf | enhModeMask);
}
if ((pciCfg.getMinorClass() & enhModeMask) == enhModeMask) {
// Use enhanced mode
final PCIBaseAddress[] baseAddrs = pciCfg.asHeaderType0().getBaseAddresses();
final int idx = (primary ? 0 : 2);
cmdBlockStart = baseAddrs[idx].getIOBase();
cmdBlockSize = 8;
ctrlBlockStart = baseAddrs[idx + 1].getIOBase();
ctrlBlockSize = 4;
altStatusPort = ctrlBlockStart + 0x02;
irq = pciCfg.asHeaderType0().getInterruptLine();
nativeMode = true;
}
}
log.info(
"Using PCI IDE " + (nativeMode ? "Native" : "Compatibility") + " mode [irq=" + irq + "]");
// Now claim the resources
IOResource cmdBlock = null;
IOResource ctrlBlock = null;
final ResourceManager rm;
try {
rm = InitialNaming.lookup(ResourceManager.NAME);
cmdBlock = claimPorts(rm, device, cmdBlockStart, cmdBlockSize);
ctrlBlock = claimPorts(rm, device, ctrlBlockStart, ctrlBlockSize);
} catch (NameNotFoundException ex) {
throw new ResourceNotFreeException("Cannot find ResourceManager", ex);
} catch (ResourceNotFreeException ex) {
if (cmdBlock != null) {
cmdBlock.release();
}
if (ctrlBlock != null) {
ctrlBlock.release();
}
throw ex;
}
this.irq = irq;
this.cmdBlockStart = cmdBlockStart;
this.ctrlBlockStart = ctrlBlockStart;
this.cmdBlock = cmdBlock;
this.ctrlBlock = ctrlBlock;
this.altStatusPort = altStatusPort;
}
/** Release all resources */
public void release() {
io.release();
}
