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//+-------------------------------------------------------------------------
//
// Microsoft Windows
//
// Copyright (C) Microsoft Corporation, 1998 - 1999
//
// File: util.c
//
//--------------------------------------------------------------------------
#include "ide.h"
#pragma alloc_text(NONPAGE, IdePortChannelEmpty)
#pragma alloc_text(PAGE, DigestResourceList)
#pragma alloc_text(PAGE, AtapiBuildIoAddress)
#pragma alloc_text(PAGE, IdeGetDeviceCapabilities)
#pragma alloc_text(NONPAGE, IdePortpWaitOnBusyEx)
#pragma alloc_text(PAGE, IdeCreateIdeDirectory)
#ifdef DPC_FOR_EMPTY_CHANNEL
BOOLEANIdePortIdentifyDevice( IN PIDE_REGISTERS_1 CmdRegBase, IN PIDE_REGISTERS_2 CtrlRegBase, IN ULONG MaxIdeDevice ){ UCHAR statusByte1; ULONG retryCount=4; BOOLEAN emptyChannel=TRUE; ULONG deviceNumber=0; ULONG i; retryCount = 4; emptyChannel = TRUE; deviceNumber = 0;
retryIdentifier:
//
// Select the master device
//
SelectIdeDevice(CmdRegBase, deviceNumber, 0);
//
// write out indentifier to readable and writable io registers
//
WRITE_PORT_UCHAR (CmdRegBase->CylinderHigh, SAMPLE_CYLINDER_HIGH_VALUE); WRITE_PORT_UCHAR (CmdRegBase->CylinderLow, SAMPLE_CYLINDER_LOW_VALUE);
//
// Check if indentifier can be read back.
//
if ((READ_PORT_UCHAR (CmdRegBase->CylinderHigh) != SAMPLE_CYLINDER_HIGH_VALUE) || (READ_PORT_UCHAR (CmdRegBase->CylinderLow) != SAMPLE_CYLINDER_LOW_VALUE)) {
statusByte1 = READ_PORT_UCHAR (CmdRegBase->Command);
DebugPrint((2, "IdePortChannelEmpty: status read back from Master (%x)\n", statusByte1));
if (statusByte1 & IDE_STATUS_BUSY) {
i = 0;
//
// Could be the TEAC in a thinkpad. Their dos driver puts it in a sleep-mode that
// warm boots don't clear.
//
do { KeStallExecutionProcessor(1000); statusByte1 = READ_PORT_UCHAR(CmdRegBase->Command); DebugPrint((3, "IdePortChannelEmpty: First access to status %x\n", statusByte1)); } while ((statusByte1 & IDE_STATUS_BUSY) && ++i < 10);
if (retryCount-- && (!(statusByte1 & IDE_STATUS_BUSY))) { goto retryIdentifier; } }
//
// Select slave.
//
deviceNumber++;
SelectIdeDevice(CmdRegBase, deviceNumber, 0);
//
// write out indentifier to readable and writable io registers
//
WRITE_PORT_UCHAR (CmdRegBase->CylinderHigh, SAMPLE_CYLINDER_HIGH_VALUE); WRITE_PORT_UCHAR (CmdRegBase->CylinderLow, SAMPLE_CYLINDER_LOW_VALUE);
//
// Check if indentifier can be read back.
//
if ((READ_PORT_UCHAR (CmdRegBase->CylinderHigh) != SAMPLE_CYLINDER_HIGH_VALUE) || (READ_PORT_UCHAR (CmdRegBase->CylinderLow) != SAMPLE_CYLINDER_LOW_VALUE)) {
statusByte1 = READ_PORT_UCHAR (CmdRegBase->Command);
DebugPrint((2, "IdePortChannelEmpty: status read back from Slave (%x)\n", statusByte1));
} else {
emptyChannel = FALSE; }
} else {
emptyChannel = FALSE; }
deviceNumber++;
if ( (deviceNumber < MaxIdeDevice) && emptyChannel ) { goto retryIdentifier; }
return emptyChannel;
} //IdePortIdentifyDevice
ULONGIdePortChannelEmptyQuick ( IN PIDE_REGISTERS_1 CmdRegBase, IN PIDE_REGISTERS_2 CtrlRegBase, IN ULONG MaxIdeDevice, IN PULONG CurrentDevice, IN PULONG moreWait, IN PULONG NoRetry){ //
// try EXECUTE_DIAGNOSTICS. No.
//
//
// statusByte1 needs to be initialized to ff
//
UCHAR statusByte1=0xff;
UCHAR statusByte2; ULONG i; BOOLEAN allStatusBytesAllFs;
allStatusBytesAllFs = TRUE;
DebugPrint((1, "ChannelEmptyQuick: wait=%d, Device=%d\n", *moreWait, *CurrentDevice)); if (*moreWait) {
(*moreWait)--;
SelectIdeDevice(CmdRegBase, (*CurrentDevice), 0);
IdePortWaitOnBusyExK (CmdRegBase, statusByte1, 0xff);
DebugPrint((1, "ATAPI: Status after first retry=%x\n", statusByte1));
if (statusByte1==0xff) { (*CurrentDevice)++; *moreWait=0; } }
if (*moreWait && (statusByte1 & IDE_STATUS_BUSY)) { return STATUS_RETRY; }
if (!(*NoRetry) && (statusByte1 & IDE_STATUS_BUSY) && ((statusByte1 != 0xfe) && (statusByte1 != 0xff))) {
DebugPrint((1, "ATAPI: IdePortChannelEmpty: channel looks busy 0x%x. try a reset\n", statusByte1));
//
// channel look hung or busy
//
// try a hard reset to bring it to idle
WRITE_PORT_UCHAR (CtrlRegBase->DeviceControl, IDE_DC_RESET_CONTROLLER);
//
// ATA-2 spec requires a minimum of 5 microsec stall here
//
KeStallExecutionProcessor (10);
WRITE_PORT_UCHAR (CtrlRegBase->DeviceControl, IDE_DC_REENABLE_CONTROLLER);
i=*CurrentDevice; SelectIdeDevice(CmdRegBase, i, 0); IdePortWaitOnBusyExK (CmdRegBase, statusByte1, 0xff); if ((statusByte1 & IDE_STATUS_BUSY) && (statusByte1 != 0xff)) { *moreWait=2; //wait for 2 more timer ticks
*NoRetry=1; return STATUS_RETRY; } }
if (statusByte1 != 0xFF) { allStatusBytesAllFs = FALSE; (*CurrentDevice)++; }
for (i=*CurrentDevice; i<MaxIdeDevice && allStatusBytesAllFs; i++) {
//
// make sure device is not busy
//
//
// Select the master device
//
SelectIdeDevice(CmdRegBase, i, 0);
if (Is98LegacyIde(CmdRegBase)) { if (READ_PORT_UCHAR(CmdRegBase->DriveSelect) != (((i & 0x1) << 4) | 0xA0)) { //
// Bad controller.
//
continue; } }
GetStatus(CmdRegBase, statusByte1); DebugPrint((1, "ATAPI:status for device %d after GetStatus=%x\n",i, statusByte1));
if (statusByte1 == 0xff) { continue; }
if (statusByte1 == 0xfe) { continue; }
IdePortWaitOnBusyExK (CmdRegBase, statusByte1, 0xff);
if ((statusByte1 & 0xfe) == 0xfe) { continue; }
if (statusByte1 & IDE_STATUS_BUSY) { DebugPrint((1, "ATAPI: Re-init the counts:device=%d, status=%x", i, statusByte1)); *CurrentDevice=i; *moreWait=2; *NoRetry=0; return STATUS_RETRY; }
if (statusByte1 != 0xFF) { allStatusBytesAllFs = FALSE; } }
if (allStatusBytesAllFs) {
//
// all status bytes are 0xff,
// no controller at this location
//
return 1; }
i=(IdePortIdentifyDevice(CmdRegBase, CtrlRegBase, MaxIdeDevice)) ? 1: 0; return i;
}//IdePortChannelEmptyQuick
#endif
BOOLEANIdePortChannelEmpty ( IN PIDE_REGISTERS_1 CmdRegBase, IN PIDE_REGISTERS_2 CtrlRegBase, IN ULONG MaxIdeDevice)/*++
Routine Description:
quickly check whether a IDE channel exist at the given io location
Arguments:
CmdRegBase - command registers
CtrlRegBase - control registers
MaxIdeDevice - number of max devices
Return Value:
TRUE - Yes, the channel is empty FALSE - No, the channel is not empty
--*/{
UCHAR statusByte1; UCHAR statusByte2; ULONG retryCount; ULONG i; BOOLEAN emptyChannel; ULONG deviceNumber; BOOLEAN allStatusBytesAllFs;
allStatusBytesAllFs = TRUE; for (i=0; i<MaxIdeDevice; i++) {
//
// make sure device is not busy
//
//
// Select the master device
//
SelectIdeDevice(CmdRegBase, i, 0);
if (Is98LegacyIde(CmdRegBase)) { if (READ_PORT_UCHAR(CmdRegBase->DriveSelect) != (((i & 0x1) << 4) | 0xA0)) { //
// Bad controller.
//
continue; } }
GetStatus(CmdRegBase, statusByte1);
if (statusByte1 == 0xff) { continue; }
if (statusByte1 == 0xfe) { continue; }
IdePortWaitOnBusyEx (CmdRegBase, &statusByte1, 0xff);
if ((statusByte1 & IDE_STATUS_BUSY) && ((statusByte1 != 0xfe) && (statusByte1 != 0xff))) {
DebugPrint((1, "IdePortChannelEmpty: channel looks busy 0x%x. try a reset\n", statusByte1));
//
// channel look hung or busy
//
// try a hard reset to bring it to idle
WRITE_PORT_UCHAR (CtrlRegBase->DeviceControl, IDE_DC_RESET_CONTROLLER); //
// ATA-2 spec requires a minimum of 5 microsec stall here
//
KeStallExecutionProcessor (10); WRITE_PORT_UCHAR (CtrlRegBase->DeviceControl, IDE_DC_REENABLE_CONTROLLER); SelectIdeDevice(CmdRegBase, i, 0); IdePortWaitOnBusyEx (CmdRegBase, &statusByte1, 0xff); }
if (statusByte1 != 0xFF) { allStatusBytesAllFs = FALSE; } }
if (allStatusBytesAllFs) {
//
// all status bytes are 0xff,
// no controller at this location
//
return TRUE; }
#ifdef DPC_FOR_EMPTY_CHANNEL
return IdePortIdentifyDevice(CmdRegBase, CtrlRegBase, MaxIdeDevice);#endif
retryCount = 4; emptyChannel = TRUE; deviceNumber = 0;
retryIdentifier:
//
// Select the master device
//
SelectIdeDevice(CmdRegBase, deviceNumber, 0);
//
// write out indentifier to readable and writable io registers
//
WRITE_PORT_UCHAR (CmdRegBase->CylinderHigh, SAMPLE_CYLINDER_HIGH_VALUE); WRITE_PORT_UCHAR (CmdRegBase->CylinderLow, SAMPLE_CYLINDER_LOW_VALUE);
//
// Check if indentifier can be read back.
//
if ((READ_PORT_UCHAR (CmdRegBase->CylinderHigh) != SAMPLE_CYLINDER_HIGH_VALUE) || (READ_PORT_UCHAR (CmdRegBase->CylinderLow) != SAMPLE_CYLINDER_LOW_VALUE)) {
statusByte1 = READ_PORT_UCHAR (CmdRegBase->Command);
DebugPrint((2, "IdePortChannelEmpty: status read back from Master (%x)\n", statusByte1));
if (statusByte1 & IDE_STATUS_BUSY) {
i = 0;
//
// Could be the TEAC in a thinkpad. Their dos driver puts it in a sleep-mode that
// warm boots don't clear.
//
do { KeStallExecutionProcessor(1000); statusByte1 = READ_PORT_UCHAR(CmdRegBase->Command); DebugPrint((3, "IdePortChannelEmpty: First access to status %x\n", statusByte1)); } while ((statusByte1 & IDE_STATUS_BUSY) && ++i < 10);
if (retryCount-- && (!(statusByte1 & IDE_STATUS_BUSY))) { goto retryIdentifier; } }
//
// Select slave.
//
deviceNumber++;
SelectIdeDevice(CmdRegBase, deviceNumber, 0);
//
// write out indentifier to readable and writable io registers
//
WRITE_PORT_UCHAR (CmdRegBase->CylinderHigh, SAMPLE_CYLINDER_HIGH_VALUE); WRITE_PORT_UCHAR (CmdRegBase->CylinderLow, SAMPLE_CYLINDER_LOW_VALUE);
//
// Check if indentifier can be read back.
//
if ((READ_PORT_UCHAR (CmdRegBase->CylinderHigh) != SAMPLE_CYLINDER_HIGH_VALUE) || (READ_PORT_UCHAR (CmdRegBase->CylinderLow) != SAMPLE_CYLINDER_LOW_VALUE)) {
statusByte1 = READ_PORT_UCHAR (CmdRegBase->Command);
DebugPrint((2, "IdePortChannelEmpty: status read back from Slave (%x)\n", statusByte1));
} else {
emptyChannel = FALSE; }
} else {
emptyChannel = FALSE; }
deviceNumber++;
if ( (deviceNumber < MaxIdeDevice) && emptyChannel ) { goto retryIdentifier; }
return emptyChannel;
} //IdePortChannelEmpty
NTSTATUSDigestResourceList ( IN OUT PIDE_RESOURCE IdeResource, IN PCM_RESOURCE_LIST ResourceList, OUT PCM_PARTIAL_RESOURCE_DESCRIPTOR *IrqPartialDescriptors ){ NTSTATUS status;
PCM_FULL_RESOURCE_DESCRIPTOR fullResourceList; PCM_PARTIAL_RESOURCE_LIST partialResourceList; PCM_PARTIAL_RESOURCE_DESCRIPTOR partialDescriptors; ULONG resourceListSize; ULONG i; ULONG j;
BOOLEAN foundCommandBase; BOOLEAN foundControlBase; BOOLEAN foundIrqLevel; BOOLEAN resourceIsCommandPort;
BOOLEAN AtdiskPrimaryClaimed; BOOLEAN AtdiskSecondaryClaimed;
PHYSICAL_ADDRESS tranlatedAddress;
IDE_REGISTERS_1 baseIoAddress1; ULONG baseIoAddress1Length;
fullResourceList = ResourceList->List; resourceListSize = 0;
DebugPrint ((5, "IdePort: DigestResourceList()\n"));
foundCommandBase = FALSE; foundControlBase = FALSE; foundIrqLevel = FALSE; *IrqPartialDescriptors = NULL; status = STATUS_SUCCESS;
AtdiskPrimaryClaimed = FALSE; AtdiskSecondaryClaimed = FALSE;
for (i = 0; (i < ResourceList->Count) && NT_SUCCESS(status); i++) {
partialResourceList = &(fullResourceList->PartialResourceList); partialDescriptors = fullResourceList->PartialResourceList.PartialDescriptors;
AtapiBuildIoAddress ((PUCHAR)partialDescriptors[0].u.Port.Start.QuadPart, 0, &baseIoAddress1, NULL, &baseIoAddress1Length, NULL, NULL, NULL);
for (j = 0; (j < partialResourceList->Count) && NT_SUCCESS(status); j++) {
resourceIsCommandPort = FALSE;
if (!Is98LegacyIde(&baseIoAddress1)) {
if (((partialDescriptors[j].Type == CmResourceTypePort) || (partialDescriptors[j].Type == CmResourceTypeMemory)) && (partialDescriptors[j].u.Port.Length == baseIoAddress1Length)) {
resourceIsCommandPort = TRUE;
} } else {
if (((partialDescriptors[j].Type == CmResourceTypePort) || (partialDescriptors[j].Type == CmResourceTypeMemory)) && (partialDescriptors[j].u.Port.Start.QuadPart == IDE_NEC98_COMMAND_PORT_ADDRESS)){
resourceIsCommandPort = TRUE;
} else if (((partialDescriptors[j].Type == CmResourceTypePort) || (partialDescriptors[j].Type == CmResourceTypeMemory)) && (partialDescriptors[j].u.Port.Start.QuadPart != IDE_NEC98_COMMAND_PORT_ADDRESS) && (partialDescriptors[j].u.Port.Start.QuadPart != (IDE_NEC98_COMMAND_PORT_ADDRESS + 0x10C))) {
//
// This is not the base port address for Legacy ide on NEC98;
//
continue; } }
if (resourceIsCommandPort) {
if (foundCommandBase) {
//
// got this before, just ignore it
//
// status = STATUS_INVALID_PARAMETER;
} else {
if (!Is98LegacyIde(&baseIoAddress1)) {
if (partialDescriptors[j].u.Port.Start.QuadPart == IDE_STANDARD_PRIMARY_ADDRESS) {
AtdiskPrimaryClaimed = TRUE;
} else if (partialDescriptors[j].u.Port.Start.QuadPart == IDE_STANDARD_SECONDARY_ADDRESS) {
AtdiskSecondaryClaimed = TRUE; }
} else {
AtdiskPrimaryClaimed = TRUE; AtdiskSecondaryClaimed = TRUE; }
if (partialDescriptors[j].Type == CmResourceTypePort) {
IdeResource->TranslatedCommandBaseAddress = (PUCHAR)(ULONG_PTR)partialDescriptors[j].u.Port.Start.QuadPart;
IdeResource->CommandBaseAddressSpace = IO_SPACE;
} else if (partialDescriptors[j].Type == CmResourceTypeMemory) {
IdeResource->TranslatedCommandBaseAddress = MmMapIoSpace( partialDescriptors[j].u.Port.Start, baseIoAddress1Length, FALSE);
IdeResource->CommandBaseAddressSpace = MEMORY_SPACE;
} else {
IdeResource->TranslatedCommandBaseAddress = FALSE; ASSERT (FALSE); }
if (IdeResource->TranslatedCommandBaseAddress) {
foundCommandBase = TRUE;
} else {
status = STATUS_INVALID_PARAMETER; } }
} else if (((partialDescriptors[j].Type == CmResourceTypePort) || (partialDescriptors[j].Type == CmResourceTypeMemory)) && ((partialDescriptors[j].u.Port.Length == 1) || (partialDescriptors[j].u.Port.Length == 2) || (partialDescriptors[j].u.Port.Length == 4))) {
if (foundControlBase) {
//
// got this before, just ignore it
//
// status = STATUS_INVALID_PARAMETER;
} else {
PHYSICAL_ADDRESS p; //
// Probably the control block register
//
p = partialDescriptors[j].u.Port.Start;
if (partialDescriptors[j].u.Port.Length == 4) {
p.QuadPart += 2; }
if (partialDescriptors[j].Type == CmResourceTypePort) {
IdeResource->TranslatedControlBaseAddress = (PUCHAR)(ULONG_PTR)partialDescriptors[j].u.Port.Start.QuadPart;
IdeResource->ControlBaseAddressSpace = IO_SPACE;
} else if (partialDescriptors[j].Type == CmResourceTypeMemory) {
IdeResource->TranslatedControlBaseAddress = MmMapIoSpace( p, 1, FALSE);
IdeResource->ControlBaseAddressSpace = MEMORY_SPACE;
} else {
IdeResource->TranslatedControlBaseAddress = FALSE; ASSERT (FALSE); }
if (IdeResource->TranslatedControlBaseAddress) {
foundControlBase = TRUE;
} else {
status = STATUS_INVALID_PARAMETER; } }
} else if (partialDescriptors[j].Type == CmResourceTypeInterrupt) {
if (foundIrqLevel) {
//
// got this before, just ignore it
//
// status = STATUS_INVALID_PARAMETER;
} else {
//
// Probably the device IRQ
//
//
// May want to disable device interrupt here
//
//
// Save interrupt level.
//
IdeResource->InterruptLevel = partialDescriptors[j].u.Interrupt.Level; IdeResource->InterruptMode = partialDescriptors[j].Flags & CM_RESOURCE_INTERRUPT_LATCHED ? Latched : LevelSensitive;
*IrqPartialDescriptors = partialDescriptors + j;
foundIrqLevel = TRUE; }
} else if (((partialDescriptors[j].Type == CmResourceTypePort) || (partialDescriptors[j].Type == CmResourceTypeMemory)) && ((partialDescriptors[j].u.Port.Length >= 16) && (partialDescriptors[j].u.Port.Length <= 32)) ) {
if (foundControlBase || foundCommandBase) {
//
// got this before, just ignore it
//
// status = STATUS_INVALID_PARAMETER;
} else {
PHYSICAL_ADDRESS ctrlAddr;
//
// Probably a pcmcia device that has its command and control
// registers lumped into one I/O range
//
// We are guessing the control block register is the second
// from the last i/o space. Some standard!
//
ctrlAddr.QuadPart = partialDescriptors[j].u.Port.Start.QuadPart + partialDescriptors[j].u.Port.Length - 2;
if (partialDescriptors[j].Type == CmResourceTypePort) {
IdeResource->TranslatedCommandBaseAddress = (PUCHAR)(ULONG_PTR)partialDescriptors[j].u.Port.Start.QuadPart;
IdeResource->CommandBaseAddressSpace = IO_SPACE;
IdeResource->TranslatedControlBaseAddress = (PUCHAR)(ULONG_PTR)ctrlAddr.QuadPart;
IdeResource->ControlBaseAddressSpace = IO_SPACE;
} else if (partialDescriptors[j].Type == CmResourceTypeMemory) {
IdeResource->TranslatedCommandBaseAddress = MmMapIoSpace( partialDescriptors[j].u.Port.Start, baseIoAddress1Length, FALSE);
IdeResource->CommandBaseAddressSpace = MEMORY_SPACE;
IdeResource->TranslatedControlBaseAddress = MmMapIoSpace( ctrlAddr, 1, FALSE);
IdeResource->ControlBaseAddressSpace = MEMORY_SPACE;
} else {
IdeResource->TranslatedCommandBaseAddress = FALSE; IdeResource->TranslatedControlBaseAddress = FALSE; ASSERT (FALSE); }
if (IdeResource->TranslatedCommandBaseAddress) {
foundCommandBase = TRUE;
} else {
status = STATUS_INVALID_PARAMETER; }
if (IdeResource->TranslatedControlBaseAddress) {
foundControlBase = TRUE;
} else {
status = STATUS_INVALID_PARAMETER; } } } } fullResourceList = (PCM_FULL_RESOURCE_DESCRIPTOR) (partialDescriptors + partialResourceList->Count); }
if (foundCommandBase && foundControlBase && NT_SUCCESS(status)) {
IdeResource->AtdiskPrimaryClaimed = AtdiskPrimaryClaimed; IdeResource->AtdiskSecondaryClaimed = AtdiskSecondaryClaimed;
return STATUS_SUCCESS;
} else {
DebugPrint((0, "IdePort: pnp manager gave me bad ressources!\n"));
if (foundCommandBase && (IdeResource->CommandBaseAddressSpace == MEMORY_SPACE)) {
MmUnmapIoSpace ( IdeResource->TranslatedCommandBaseAddress, baseIoAddress1Length );
IdeResource->TranslatedCommandBaseAddress = 0; }
if (foundControlBase && (IdeResource->ControlBaseAddressSpace == MEMORY_SPACE)) {
MmUnmapIoSpace ( IdeResource->TranslatedControlBaseAddress, 1 );
IdeResource->TranslatedControlBaseAddress = 0; }
return STATUS_INVALID_PARAMETER; }} // DigestResourceList
VOIDAtapiBuildIoAddress ( IN PUCHAR CmdBaseAddress, IN PUCHAR CtrlBaseAddress, OUT PIDE_REGISTERS_1 BaseIoAddress1, OUT PIDE_REGISTERS_2 BaseIoAddress2, OUT PULONG BaseIoAddress1Length, OUT PULONG BaseIoAddress2Length, OUT PULONG MaxIdeDevice, OUT PULONG MaxIdeTargetId){ PUCHAR baseIoAddress; BOOLEAN LegacyIdeOfNec98;
LegacyIdeOfNec98 = FALSE;
if (IsNEC_98) { if (CmdBaseAddress == (PUCHAR)IDE_NEC98_COMMAND_PORT_ADDRESS) { LegacyIdeOfNec98 = TRUE; } }
if (!LegacyIdeOfNec98) {
//
// Build command registers.
//
baseIoAddress = CmdBaseAddress;
if (BaseIoAddress1) { BaseIoAddress1->RegistersBaseAddress = baseIoAddress;
BaseIoAddress1->Data = (PUSHORT)baseIoAddress; BaseIoAddress1->Error = baseIoAddress + 1; BaseIoAddress1->BlockCount = baseIoAddress + 2; BaseIoAddress1->BlockNumber = baseIoAddress + 3; BaseIoAddress1->CylinderLow = baseIoAddress + 4; BaseIoAddress1->CylinderHigh = baseIoAddress + 5; BaseIoAddress1->DriveSelect = baseIoAddress + 6; BaseIoAddress1->Command = baseIoAddress + 7;
}
//
// Build control registers.
//
baseIoAddress = CtrlBaseAddress;
if (BaseIoAddress2) {
BaseIoAddress2->RegistersBaseAddress = baseIoAddress;
BaseIoAddress2->DeviceControl = baseIoAddress; BaseIoAddress2->DriveAddress = baseIoAddress + 1; }
if (BaseIoAddress1Length) { *BaseIoAddress1Length = 8; }
if (BaseIoAddress2Length) { *BaseIoAddress2Length = 1; }
if (MaxIdeDevice) { *MaxIdeDevice = MAX_IDE_DEVICE; }
if (MaxIdeTargetId) { *MaxIdeTargetId = MAX_IDE_DEVICE; }
} else {
//
// Build command registers.
//
baseIoAddress = CmdBaseAddress;
if (BaseIoAddress1) { BaseIoAddress1->RegistersBaseAddress = baseIoAddress;
BaseIoAddress1->Data = (PUSHORT)baseIoAddress; BaseIoAddress1->Error = baseIoAddress + 2; BaseIoAddress1->BlockCount = baseIoAddress + 4; BaseIoAddress1->BlockNumber = baseIoAddress + 6; BaseIoAddress1->CylinderLow = baseIoAddress + 8; BaseIoAddress1->CylinderHigh = baseIoAddress + 10; BaseIoAddress1->DriveSelect = baseIoAddress + 12; BaseIoAddress1->Command = baseIoAddress + 14; }
//
// Build control registers.
//
baseIoAddress = CtrlBaseAddress;
if (BaseIoAddress2) {
BaseIoAddress2->RegistersBaseAddress = baseIoAddress;
BaseIoAddress2->DeviceControl = baseIoAddress; BaseIoAddress2->DriveAddress = baseIoAddress + 2; }
if (BaseIoAddress1Length) { *BaseIoAddress1Length = 1; }
if (BaseIoAddress2Length) { *BaseIoAddress2Length = 1; }
if (MaxIdeDevice) { *MaxIdeDevice = MAX_IDE_DEVICE * MAX_IDE_LINE; }
if (MaxIdeTargetId) { *MaxIdeTargetId = MAX_IDE_DEVICE * MAX_IDE_LINE; } }
return;
} // AtapiBuildIoAddress
NTSTATUSIdePortpWaitOnBusyEx ( IN PIDE_REGISTERS_1 CmdRegBase, IN OUT PUCHAR Status, IN UCHAR BadStatus#if DBG
, IN PCSTR FileName, IN ULONG LineNumber#endif
){ UCHAR status; ULONG sec; ULONG i;
for (sec=0; sec<2; sec++) {
/**/ /* one second loop */ /**/
for (i=0; i<200000; i++) {
GetStatus(CmdRegBase, status); if (status == BadStatus) {
break;
} else if (status & IDE_STATUS_BUSY) {
KeStallExecutionProcessor(5); continue;
} else {
break; } }
if (status == BadStatus) {
break;
} else if (status & IDE_STATUS_BUSY) {
DebugPrint ((1, "ATAPI: after 1 sec wait, device is still busy with 0x%x status = 0x%x\n", CmdRegBase->RegistersBaseAddress, (ULONG) (status)));
} else {
break; } }
*Status = status;
if ((status & IDE_STATUS_BUSY) && (status != BadStatus)) {
DebugPrint ((0, "WaitOnBusy failed in %s line %u. 0x%x status = 0x%x\n", FileName, LineNumber, CmdRegBase->RegistersBaseAddress, (ULONG) (status)));
return STATUS_UNSUCCESSFUL; }
return STATUS_SUCCESS;} // IdePortpWaitOnBusyEx
static PVOID IdeDirectory = NULL;VOIDIdeCreateIdeDirectory( VOID ){ UNICODE_STRING unicodeDirectoryName; OBJECT_ATTRIBUTES objectAttributes;
HANDLE directory;
NTSTATUS status;
PAGED_CODE();
RtlInitUnicodeString( &unicodeDirectoryName, DEVICE_OJBECT_BASE_NAME);
InitializeObjectAttributes( &objectAttributes, &unicodeDirectoryName, OBJ_CASE_INSENSITIVE | OBJ_PERMANENT, NULL, NULL);
status = ZwCreateDirectoryObject(&directory, DIRECTORY_ALL_ACCESS, &objectAttributes);
if(NT_SUCCESS(status)) {
ObReferenceObjectByHandle(directory, FILE_READ_ATTRIBUTES, NULL, KernelMode, &IdeDirectory, NULL); ZwClose(directory);
} return;}
NTSTATUSIdeGetDeviceCapabilities( IN PDEVICE_OBJECT DeviceObject, IN PDEVICE_CAPABILITIES DeviceCapabilities )/*++
Routine Description:
This routine sends the get capabilities irp to the given stack
Arguments:
DeviceObject A device object in the stack whose capabilities we want DeviceCapabilites Where to store the answer
Return Value:
NTSTATUS
--*/{ IO_STATUS_BLOCK ioStatus; KEVENT pnpEvent; NTSTATUS status; PDEVICE_OBJECT targetObject; PIO_STACK_LOCATION irpStack; PIRP pnpIrp;
PAGED_CODE();
//
// Initialize the capabilities that we will send down
//
RtlZeroMemory( DeviceCapabilities, sizeof(DEVICE_CAPABILITIES) ); DeviceCapabilities->Size = sizeof(DEVICE_CAPABILITIES); DeviceCapabilities->Version = 1; DeviceCapabilities->Address = -1; DeviceCapabilities->UINumber = -1; //
// Initialize the event
//
KeInitializeEvent( &pnpEvent, SynchronizationEvent, FALSE );
//
// Get the irp that we will send the request to
//
targetObject = IoGetAttachedDeviceReference( DeviceObject );
//
// Build an Irp
//
pnpIrp = IoBuildSynchronousFsdRequest( IRP_MJ_PNP, targetObject, NULL, 0, NULL, &pnpEvent, &ioStatus ); if (pnpIrp == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES; goto IdeGetDeviceCapabilitiesExit;
}
//
// Pnp Irps all begin life as STATUS_NOT_SUPPORTED;
//
pnpIrp->IoStatus.Status = STATUS_NOT_SUPPORTED; pnpIrp->IoStatus.Information = 0;
//
// Get the top of stack
//
irpStack = IoGetNextIrpStackLocation( pnpIrp ); if (irpStack == NULL) {
status = STATUS_INVALID_PARAMETER; goto IdeGetDeviceCapabilitiesExit;
}
//
// Set the top of stack
//
RtlZeroMemory( irpStack, sizeof(IO_STACK_LOCATION ) ); irpStack->MajorFunction = IRP_MJ_PNP; irpStack->MinorFunction = IRP_MN_QUERY_CAPABILITIES; irpStack->Parameters.DeviceCapabilities.Capabilities = DeviceCapabilities;
//
// Make sure that there are no completion routines set
//
IoSetCompletionRoutine( pnpIrp, NULL, NULL, FALSE, FALSE, FALSE );
//
// Call the driver
//
status = IoCallDriver( targetObject, pnpIrp ); if (status == STATUS_PENDING) {
//
// Block until the irp comes back
//
KeWaitForSingleObject( &pnpEvent, Executive, KernelMode, FALSE, NULL ); status = ioStatus.Status;
}
IdeGetDeviceCapabilitiesExit: //
// Done with reference
//
ObDereferenceObject( targetObject );
//
// Done
//
return status;}
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