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Fixed a bug in partition chain handling

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svn path=/trunk/; revision=1495
This commit is contained in:
Rex Jolliff 2001-01-06 23:25:35 +00:00
parent e4b73aa914
commit b12b25cd3d
2 changed files with 53 additions and 32 deletions
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59
reactos/drivers/dd/ide/ide.c
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@ -1,4 +1,4 @@
/* $Id: ide.c,v 1.36 2000/10/07 13:41:55 dwelch Exp $
/* $Id: ide.c,v 1.37 2001/01/06 23:25:35 rex Exp $
*
* IDE.C - IDE Disk driver
* written by Rex Jolliff
@ -246,8 +246,12 @@ DriverEntry(IN PDRIVER_OBJECT DriverObject,
WeGotSomeDisks = FALSE;
for (ControllerIdx = 0; ControllerIdx < IDE_MAX_CONTROLLERS; ControllerIdx++)
{
WeGotSomeDisks |= IDECreateController(DriverObject,
&Controllers[ControllerIdx], ControllerIdx);
if (IDECreateController(DriverObject,
&Controllers[ControllerIdx],
ControllerIdx))
{
WeGotSomeDisks = TRUE;
}
}
if (WeGotSomeDisks)
@ -364,6 +368,8 @@ IDECreateController(IN PDRIVER_OBJECT DriverObject,
}
else
{
IDEResetController(ControllerParams->CommandPortBase,
ControllerParams->ControlPortBase);
IoStartTimer(ControllerExtension->TimerDevice);
}
@ -515,7 +521,7 @@ IDECreateDevices(IN PDRIVER_OBJECT DriverObject,
RC = ZwCreateDirectoryObject(&Handle, 0, &DeviceDirAttributes);
if (!NT_SUCCESS(RC))
{
DPRINT("Could not create device dir object\n", 0);
DbgPrint("Could not create device dir object\n");
return FALSE;
}
@ -572,10 +578,10 @@ IDECreateDevices(IN PDRIVER_OBJECT DriverObject,
{
ExtendedPart = FALSE;
// Get Main partition table for device
// Get Next partition table for device
if (!IDEGetPartitionTable(CommandPort, DriveIdx, PartitionOffset, &DrvParms, PartitionTable))
{
DPRINT("drive %d controller %d offset %lu: Could not get primary partition table\n",
DbgPrint("drive %d controller %d offset %lu: Could not get partition table\n",
DriveIdx,
ControllerExtension->Number,
PartitionOffset);
@ -583,7 +589,7 @@ IDECreateDevices(IN PDRIVER_OBJECT DriverObject,
else
{
// build devices for all partitions in table
DPRINT("partitions on %s:\n", DeviceDirName);
DPRINT("Read partition on %wZ at %ld\n", &UnicodeDeviceDirName, PartitionOffset);
for (PartitionIdx = 0; PartitionIdx < 4; PartitionIdx++)
{
// copy partition pointer for convenience
@ -592,8 +598,8 @@ IDECreateDevices(IN PDRIVER_OBJECT DriverObject,
// if the partition entry is in use, create a device for it
if (IsRecognizedPartition(p->PartitionType))
{
DPRINT("%s ptbl entry:%d type:%02x Start:%lu Size:%lu\n",
DeviceDirName,
DPRINT("%wZ ptbl entry:%d type:%02x Start:%lu Size:%lu\n",
&UnicodeDeviceDirName,
PartitionIdx,
p->PartitionType,
p->StartingBlock,
@ -615,19 +621,21 @@ IDECreateDevices(IN PDRIVER_OBJECT DriverObject,
DPRINT("IDECreateDevice call failed\n",0);
break;
}
PartitionOffset += (p->StartingBlock + p->SectorCount);
PartitionNum++;
}
else if (IsExtendedPartition(p->PartitionType))
{
// Create devices for logical partitions within an extended partition
DPRINT("%s ptbl entry:%d type:%02x Start:%lu Size:%lu\n",
DeviceDirName,
DPRINT("%wZ ptbl entry:%d type:%02x Start:%lu Size:%lu\n",
&UnicodeDeviceDirName,
PartitionIdx,
p->PartitionType,
p->StartingBlock,
p->SectorCount);
ExtendedPart = TRUE;
//TODO: If it is possible for partitions to appear after chain, this code is wrong.
PartitionOffset += p->StartingBlock;
break;
}
}
}
@ -1146,14 +1154,14 @@ DPRINT("Offset:%ld * BytesPerSector:%ld = AdjOffset:%ld:%ld\n",
DeviceExtension->BytesPerSector,
(unsigned long) AdjustedOffset.u.HighPart,
(unsigned long) AdjustedOffset.u.LowPart);
DPRINT("AdjOffset:%ld:%ld + ByteOffset:%ld:%ld = ",
DPRINT("AdjOffset:%ld:%ld + ByteOffset:%ld:%ld\n",
(unsigned long) AdjustedOffset.u.HighPart,
(unsigned long) AdjustedOffset.u.LowPart,
(unsigned long) IrpStack->Parameters.Read.ByteOffset.u.HighPart,
(unsigned long) IrpStack->Parameters.Read.ByteOffset.u.LowPart);
AdjustedOffset = RtlLargeIntegerAdd(AdjustedOffset,
IrpStack->Parameters.Read.ByteOffset);
DPRINT("AdjOffset:%ld:%ld\n",
DPRINT(" = AdjOffset:%ld:%ld\n",
(unsigned long) AdjustedOffset.u.HighPart,
(unsigned long) AdjustedOffset.u.LowPart);
AdjustedExtent = RtlLargeIntegerAdd(AdjustedOffset,
@ -1164,7 +1172,7 @@ DPRINT("AdjOffset:%ld:%ld + Length:%ld = AdjExtent:%ld:%ld\n",
IrpStack->Parameters.Read.Length,
(unsigned long) AdjustedExtent.u.HighPart,
(unsigned long) AdjustedExtent.u.LowPart);
/* FIXME: this assumption will fail on drives bigger than 1TB */
/*FIXME: this assumption will fail on drives bigger than 1TB */
PartitionExtent.QuadPart = DeviceExtension->Offset + DeviceExtension->Size;
PartitionExtent = RtlExtendedIntegerMultiply(PartitionExtent,
DeviceExtension->BytesPerSector);
@ -1381,6 +1389,7 @@ IDEStartController(IN OUT PVOID Context)
{
BYTE SectorCnt, SectorNum, CylinderLow, CylinderHigh;
BYTE DrvHead, Command;
BYTE Status;
int Retries;
ULONG StartingSector;
PIDE_DEVICE_EXTENSION DeviceExtension;
@ -1417,12 +1426,12 @@ IDEStartController(IN OUT PVOID Context)
CylinderHigh = StartingSector >> 8;
}
Command = DeviceExtension->Operation == IRP_MJ_READ ?
// IDE_CMD_READ_RETRY : IDE_CMD_WRITE_RETRY;
IDE_CMD_READ : IDE_CMD_WRITE;
if (DrvHead & IDE_DH_LBA)
{
DPRINT("%s:DRV=%d:LBA=1:BLK=%08d:SC=%02x:CM=%02x\n",
DPRINT("%s:BUS=%04x:DRV=%d:LBA=1:BLK=%08d:SC=%02x:CM=%02x\n",
DeviceExtension->Operation == IRP_MJ_READ ? "READ" : "WRITE",
ControllerExtension->CommandPortBase,
DrvHead & IDE_DH_DRV1 ? 1 : 0,
((DrvHead & 0x0f) << 24) +
(CylinderHigh << 16) + (CylinderLow << 8) + SectorNum,
@ -1431,8 +1440,9 @@ IDEStartController(IN OUT PVOID Context)
}
else
{
DPRINT("%s:DRV=%d:LBA=0:CH=%02x:CL=%02x:HD=%01x:SN=%02x:SC=%02x:CM=%02x\n",
DPRINT("%s:BUS=%04x:DRV=%d:LBA=0:CH=%02x:CL=%02x:HD=%01x:SN=%02x:SC=%02x:CM=%02x\n",
DeviceExtension->Operation == IRP_MJ_READ ? "READ" : "WRITE",
ControllerExtension->CommandPortBase,
DrvHead & IDE_DH_DRV1 ? 1 : 0,
CylinderHigh,
CylinderLow,
@ -1445,17 +1455,21 @@ IDEStartController(IN OUT PVOID Context)
/* wait for BUSY to clear */
for (Retries = 0; Retries < IDE_MAX_BUSY_RETRIES; Retries++)
{
BYTE Status = IDEReadStatus(ControllerExtension->CommandPortBase);
Status = IDEReadStatus(ControllerExtension->CommandPortBase);
if (!(Status & IDE_SR_BUSY))
{
break;
}
KeStallExecutionProcessor(10);
}
DPRINT ("status=%02x\n", Status);
DPRINT ("waited %ld usecs for busy to clear\n", Retries * 10);
if (Retries >= IDE_MAX_BUSY_RETRIES)
{
DPRINT ("Drive is BUSY for too long\n");
if (++ControllerExtension->Retries > IDE_MAX_CMD_RETRIES)
{
DPRINT ("Max Retries on Drive reset reached, returning failure\n");
Irp = ControllerExtension->CurrentIrp;
Irp->IoStatus.Status = STATUS_DISK_OPERATION_FAILED;
Irp->IoStatus.Information = 0;
@ -1464,6 +1478,7 @@ IDEStartController(IN OUT PVOID Context)
}
else
{
DPRINT ("Beginning drive reset sequence\n");
IDEBeginControllerReset(ControllerExtension);
return TRUE;
@ -1483,10 +1498,13 @@ IDEStartController(IN OUT PVOID Context)
}
KeStallExecutionProcessor(10);
}
DPRINT ("waited %ld usecs for busy to clear after drive select\n", Retries * 10);
if (Retries >= IDE_MAX_BUSY_RETRIES)
{
DPRINT ("Drive is BUSY for too long after drive select\n");
if (ControllerExtension->Retries++ > IDE_MAX_CMD_RETRIES)
{
DPRINT ("Max Retries on Drive reset reached, returning failure\n");
Irp = ControllerExtension->CurrentIrp;
Irp->IoStatus.Status = STATUS_DISK_OPERATION_FAILED;
Irp->IoStatus.Information = 0;
@ -1495,6 +1513,7 @@ IDEStartController(IN OUT PVOID Context)
}
else
{
DPRINT ("Beginning drive reset sequence\n");
IDEBeginControllerReset(ControllerExtension);
return TRUE;
@ -1553,6 +1572,7 @@ IDEStartController(IN OUT PVOID Context)
DeviceExtension->BytesToTransfer -= DeviceExtension->BytesPerSector;
DeviceExtension->SectorsTransferred++;
}
DPRINT ("Command issued to drive, IDEStartController done\n");
return TRUE;
}
@ -1631,6 +1651,7 @@ IDEIsr(IN PKINTERRUPT Interrupt,
{
return FALSE;
}
DPRINT ("IDEIsr called\n");
ControllerExtension = (PIDE_CONTROLLER_EXTENSION) ServiceContext;