/**
* Look for the ROM in the ISA region.
*
* @param rm
* @return The claimed ROM region, or null if not found.
*/
private final MemoryResource findRom(final ResourceOwner owner, final ResourceManager rm)
throws ResourceNotFreeException {
final MemoryScanner scanner =
AccessController.doPrivileged(
new PrivilegedAction<MemoryScanner>() {
public MemoryScanner run() {
return rm.getMemoryScanner();
}
});
final Address start = Address.fromIntZeroExtend(0xC0000);
final Address end = Address.fromIntZeroExtend(0xF0000);
final int size = end.toWord().sub(start.toWord()).toInt();
final int stepSize = 0x1000;
int offset = 0;
while (offset < size) {
final Address romAddr;
// Search for BIOS expansion
romAddr =
scanner.findInt8Array(
start.add(offset),
size - offset,
BIOS_ROM_SIGNATURE,
0,
BIOS_ROM_SIGNATURE.length,
stepSize);
if (romAddr == null) {
return null;
} else {
offset = romAddr.toWord().sub(start.toWord()).toInt() + stepSize;
}
// Search for ATI signature
final Address atiSigAddr;
atiSigAddr =
scanner.findInt8Array(romAddr, 128, ATI_ROM_SIGNATURE, 0, ATI_ROM_SIGNATURE.length, 1);
if (atiSigAddr == null) {
continue;
}
// We found it
// Claim a small region, so we can read the size.
MemoryResource mem;
mem = rm.claimMemoryResource(owner, romAddr, 4, ResourceManager.MEMMODE_NORMAL);
final int blocks = mem.getByte(2) & 0xFF;
final int romSize = blocks * 512;
mem.release();
log.info(
"Found ATI ROM at 0x"
+ NumberUtils.hex(romAddr.toInt())
+ " size="
+ NumberUtils.toBinaryByte(romSize));
return rm.claimMemoryResource(owner, romAddr, romSize, ResourceManager.MEMMODE_NORMAL);
}
return null;
}
/**
* Demand zero mmaps an area of virtual memory.
*
* @param start the address of the start of the area to be mapped
* @param size the size, in bytes, of the area to be mapped
* @return 0 if successful, otherwise the system errno
*/
public final int dzmmap(Address start, int size) {
Address result = org.jikesrvm.runtime.Memory.dzmmap(start, Extent.fromIntZeroExtend(size));
if (result.EQ(start)) return 0;
if (result.GT(Address.fromIntZeroExtend(127))) {
VM.sysWrite("demand zero mmap with MAP_FIXED on ", start);
VM.sysWriteln(" returned some other address", result);
VM.sysFail("mmap with MAP_FIXED has unexpected behavior");
}
return result.toInt();
}
/**
* Find the ACPI root descriptor table.
*
* @param rm
* @return
* @throws ResourceNotFreeException
*/
private static final AcpiRSDPInfo findAcpiRSDTPTR(final ResourceManager rm)
throws ResourceNotFreeException {
final byte[] match = {'R', 'S', 'D', ' ', 'P', 'T', 'R', ' '};
final MemoryScanner scanner =
(MemoryScanner)
AccessController.doPrivileged(
new PrivilegedAction() {
public Object run() {
return rm.getMemoryScanner();
}
});
final Address tablePtr =
scanner.findInt8Array(
Address.fromIntZeroExtend(0xe0000), 0x1ffff, match, 0, match.length, 1);
if (tablePtr != null) {
final int version = getRSDTVersion(rm, tablePtr);
return new AcpiRSDPInfo(tablePtr, version);
} else {
// Not an ACPI system
return null;
}
}
/**
* @param driver
* @param architecture
* @param model
* @param device
*/
public RadeonCore(RadeonDriver driver, int architecture, String model, PCIDevice device)
throws ResourceNotFreeException, DriverException {
this.driver = driver;
this.fbinfo = new FBInfo(architecture);
final PCIHeaderType0 pciCfg = device.getConfig().asHeaderType0();
final PCIBaseAddress ioAddr = pciCfg.getBaseAddresses()[2];
final PCIBaseAddress fbAddr = pciCfg.getBaseAddresses()[0];
final PCIRomAddress romAddr = pciCfg.getRomAddress();
log.info("Found ATI " + model + ", chipset 0x" + NumberUtils.hex(pciCfg.getRevision()));
try {
final ResourceManager rm = InitialNaming.lookup(ResourceManager.NAME);
final int ioBase = (int) ioAddr.getMemoryBase();
final int ioSize = ioAddr.getSize();
final int fbBase = (int) fbAddr.getMemoryBase() /* & 0xFF800000 */;
// Map Memory Mapped IO
this.mmio =
rm.claimMemoryResource(
device, Address.fromIntZeroExtend(ioBase), ioSize, ResourceManager.MEMMODE_NORMAL);
this.vgaIO = new RadeonVgaIO(mmio);
final int memSize = readMemorySize();
log.info("Memory size " + NumberUtils.toBinaryByte(memSize));
this.accel = new RadeonAcceleration(vgaIO);
// Map Device RAM
this.deviceRam =
rm.claimMemoryResource(
device, Address.fromIntZeroExtend(fbBase), memSize, ResourceManager.MEMMODE_NORMAL);
vgaIO.setVideoRam(deviceRam);
// Find ROM
MemoryResource rom = null;
if (romAddr != null) {
romAddr.setEnabled(true);
if (romAddr.isEnabled()) {
rom =
rm.claimMemoryResource(
device,
Address.fromIntZeroExtend(romAddr.getRomBase()),
romAddr.getSize(),
ResourceManager.MEMMODE_NORMAL);
if (!verifyBiosSignature(rom)) {
log.info("Signature mismatch");
rom.release();
rom = null;
}
} else {
log.debug("Failed to enabled expansion ROM");
}
}
if (rom == null) {
// Use the ISA regions rom instead
rom = findRom(device, rm);
}
this.rom = rom;
log.debug(
"Found ATI "
+ model
+ ", FB at 0x"
+ NumberUtils.hex(fbBase)
+ "s0x"
+ NumberUtils.hex(memSize)
+ ", MMIO at 0x"
+ NumberUtils.hex(ioBase)
+ ", ROM "
+ pciCfg.getRomAddress());
fbinfo.readMonitorInfo(vgaIO);
if (this.rom != null) {
log.info("ROM[0-3] 0x" + NumberUtils.hex(rom.getInt(0)));
// Read monitor information
fbinfo.readFPIInfo(rom);
}
} catch (NameNotFoundException ex) {
throw new ResourceNotFreeException(ex);
}
// Read the current state of the device
this.oldVgaState = new RadeonVgaState(architecture, fbinfo.hasCRTC2, vgaIO);
this.currentState = new RadeonVgaState(architecture, fbinfo.hasCRTC2, vgaIO);
// Claim the first 128K for VGA only
deviceRam.claimChildResource(0, 128 * 1024, false);
// Allocate the hardware cursor
this.hwCursor = new RadeonHardwareCursor(this, vgaIO);
}