VOID
HalpGetPciBridgeNeeds (
IN ULONG HwType,
IN PUCHAR MaxPciBus,
IN PCONFIGBRIDGE Current
)
{
ACCESS_MASK DesiredAccess;
UNICODE_STRING unicodeString;
PUCHAR buffer;
HANDLE handle;
OBJECT_ATTRIBUTES objectAttributes;
PCM_FULL_RESOURCE_DESCRIPTOR Descriptor;
PCONFIGURATION_COMPONENT Component;
CONFIGBRIDGE CB;
ULONG mnum, d, f;
NTSTATUS status;
buffer = ExAllocatePool (PagedPool, 1024);
// init
CB.PciData = (PPCI_COMMON_CONFIG) CB.Buffer;
CB.SlotNumber.u.bits.Reserved = 0;
Current->IO = Current->Memory = Current->PFMemory = 0;
//
// Assign this bridge an ID, and turn on configuration space
//
Current->PciData->u.type1.PrimaryBus = (UCHAR) Current->BusNo;
Current->PciData->u.type1.SecondaryBus = (UCHAR) *MaxPciBus;
Current->PciData->u.type1.SubordinateBus = (UCHAR) 0xFF;
Current->PciData->u.type1.SecondaryStatus = 0xffff;
Current->PciData->Status = 0xffff;
Current->PciData->Command = 0;
Current->PciData->u.type1.BridgeControl = PCI_ASSERT_BRIDGE_RESET;
HalpWritePCIConfig (
Current->BusHandler,
Current->SlotNumber,
Current->PciData,
0,
PCI_COMMON_HDR_LENGTH
);
KeStallExecutionProcessor (100);
Current->PciData->u.type1.BridgeControl = 0;
HalpWritePCIConfig (
Current->BusHandler,
Current->SlotNumber,
Current->PciData,
0,
PCI_COMMON_HDR_LENGTH
);
KeStallExecutionProcessor (100);
//
// Allocate new handler for bus
//
CB.BusHandler = HalpAllocateAndInitPciBusHandler (HwType, *MaxPciBus, FALSE);
CB.BusData = (PPCIPBUSDATA) CB.BusHandler->BusData;
CB.BusNo = *MaxPciBus;
*MaxPciBus += 1;
//
// Add another PCI bus in the registry
//
mnum = 0;
for (; ;) {
//
// Find next available MultiFunctionAdapter key
//
DesiredAccess = KEY_READ | KEY_WRITE;
swprintf ((PWCHAR) buffer, L"%s\\%d", rgzMultiFunctionAdapter, mnum);
RtlInitUnicodeString (&unicodeString, (PWCHAR) buffer);
InitializeObjectAttributes( &objectAttributes,
&unicodeString,
OBJ_CASE_INSENSITIVE,
NULL,
(PSECURITY_DESCRIPTOR) NULL
);
status = ZwOpenKey( &handle, DesiredAccess, &objectAttributes);
if (!NT_SUCCESS(status)) {
break;
}
// already exists, next
ZwClose (handle);
mnum += 1;
}
ZwCreateKey (&handle,
DesiredAccess,
&objectAttributes,
0,
NULL,
REG_OPTION_VOLATILE,
&d
);
//
// Add needed registry values for this MultifucntionAdapter entry
//
RtlInitUnicodeString (&unicodeString, rgzIdentifier);
ZwSetValueKey (handle,
&unicodeString,
0L,
REG_SZ,
L"PCI",
sizeof (L"PCI")
);
RtlInitUnicodeString (&unicodeString, rgzConfigurationData);
Descriptor = (PCM_FULL_RESOURCE_DESCRIPTOR) buffer;
Descriptor->InterfaceType = PCIBus;
Descriptor->BusNumber = CB.BusNo;
Descriptor->PartialResourceList.Version = 0;
Descriptor->PartialResourceList.Revision = 0;
Descriptor->PartialResourceList.Count = 0;
ZwSetValueKey (handle,
&unicodeString,
0L,
REG_FULL_RESOURCE_DESCRIPTOR,
Descriptor,
sizeof (*Descriptor)
);
RtlInitUnicodeString (&unicodeString, L"Component Information");
Component = (PCONFIGURATION_COMPONENT) buffer;
RtlZeroMemory (Component, sizeof (*Component));
Component->AffinityMask = 0xffffffff;
ZwSetValueKey (handle,
&unicodeString,
0L,
REG_BINARY,
Component,
FIELD_OFFSET (CONFIGURATION_COMPONENT, ConfigurationDataLength)
);
ZwClose (handle);
//
// Since the firmware didn't configure this bridge we'll assume that
// the PCI interrupts are bridged.
//
for (d = 0; d < PCI_MAX_DEVICES; d++) {
CB.SlotNumber.u.bits.DeviceNumber = d;
for (f = 0; f < PCI_MAX_FUNCTION; f++) {
CB.SlotNumber.u.bits.FunctionNumber = f;
HalpReadPCIConfig (
Current->BusHandler,
CB.SlotNumber,
CB.PciData,
0,
PCI_COMMON_HDR_LENGTH
);
if (CB.PciData->VendorID == PCI_INVALID_VENDORID) {
break;
}
if (CB.PciData->u.type0.InterruptPin &&
(PCI_CONFIG_TYPE (CB.PciData) == PCI_DEVICE_TYPE ||
PCI_CONFIG_TYPE (CB.PciData) == PCI_BRIDGE_TYPE)) {
//
// Get IRQ value from table since firmware
// did not initialize the bridge.
//
Current->PciData->u.type1.InterruptPin =
CB.PciData->u.type0.InterruptPin + (UCHAR)d % 4;
Current->PciData->u.type1.InterruptLine =
HalpPCIPinToLineTable[(CB.BusNo*8) + CB.SlotNumber.u.bits.DeviceNumber];
}
}
}
//
// Look at each device on the bus and determine it's resource needs
//
for (d = 0; d < PCI_MAX_DEVICES; d++) {
CB.SlotNumber.u.bits.DeviceNumber = d;
for (f = 0; f < PCI_MAX_FUNCTION; f++) {
CB.SlotNumber.u.bits.FunctionNumber = f;
HalpReadPCIConfig (
CB.BusHandler,
CB.SlotNumber,
CB.PciData,
0,
PCI_COMMON_HDR_LENGTH
);
if (CB.PciData->VendorID == PCI_INVALID_VENDORID) {
break;
}
if (IsPciBridge (CB.PciData)) {
// oh look - another bridge ...
HalpGetPciBridgeNeeds (HwType, MaxPciBus, &CB);
continue;
}
if (PCI_CONFIG_TYPE (CB.PciData) != PCI_DEVICE_TYPE) {
continue;
}
// found a device - figure out the resources it needs
}
}
//
// Found all sub-buses set SubordinateBus accordingly
//
Current->PciData->u.type1.SubordinateBus = (UCHAR) *MaxPciBus - 1;
HalpWritePCIConfig (
Current->BusHandler,
Current->SlotNumber,
Current->PciData,
0,
PCI_COMMON_HDR_LENGTH
);
//
// Set the bridges IO, Memory, and Prefetch Memory windows
//
// For now just pick some numbers & set everyone the same
// IO 0x6000 - 0xFFFF
// MEM 0x40000000 - 0x4FFFFFFF
// PFMEM 0x50000000 - 0x5FFFFFFF
Current->PciData->u.type1.IOBase = 0xD000 >> 12 << 4;
Current->PciData->u.type1.IOLimit = 0xffff >> 12 << 4;
Current->PciData->u.type1.MemoryBase = 0x0 >> 20 << 4;
Current->PciData->u.type1.MemoryLimit = 0x0 >> 20 << 4;
Current->PciData->u.type1.PrefetchBase = 0 >> 20 << 4;
Current->PciData->u.type1.PrefetchLimit = 0 >> 20 << 4;
Current->PciData->u.type1.PrefetchBaseUpper32 = 0;
Current->PciData->u.type1.PrefetchLimitUpper32 = 0;
Current->PciData->u.type1.IOBaseUpper16 = 0;
Current->PciData->u.type1.IOLimitUpper16 = 0;
Current->PciData->u.type1.BridgeControl =
PCI_ENABLE_BRIDGE_ISA;
HalpWritePCIConfig (
Current->BusHandler,
Current->SlotNumber,
Current->PciData,
0,
PCI_COMMON_HDR_LENGTH
);
HalpReadPCIConfig (
Current->BusHandler,
Current->SlotNumber,
Current->PciData,
0,
PCI_COMMON_HDR_LENGTH
);
// enable memory & io decodes
Current->PciData->Command =
PCI_ENABLE_IO_SPACE | PCI_ENABLE_MEMORY_SPACE | PCI_ENABLE_BUS_MASTER;
HalpWritePCIConfig (
Current->BusHandler,
Current->SlotNumber,
&Current->PciData->Command,
FIELD_OFFSET (PCI_COMMON_CONFIG, Command),
sizeof (Current->PciData->Command)
);
ExFreePool (buffer);
}
INIT_FUNCTION
VOID
NTAPI
HalpInitializePciBus(VOID)
{
#ifndef _MINIHAL_
PPCI_REGISTRY_INFO_INTERNAL PciRegistryInfo;
UCHAR PciType;
PCI_SLOT_NUMBER PciSlot;
ULONG i, j, k;
UCHAR DataBuffer[PCI_COMMON_HDR_LENGTH];
PPCI_COMMON_CONFIG PciData = (PPCI_COMMON_CONFIG)DataBuffer;
PBUS_HANDLER BusHandler;
ULONG HackFlags;
BOOLEAN ExtendedAddressDecoding = FALSE;
NTSTATUS Status;
/* Query registry information */
PciRegistryInfo = HalpQueryPciRegistryInfo();
if (!PciRegistryInfo) return;
/* Initialize the PCI configuration lock */
KeInitializeSpinLock(&HalpPCIConfigLock);
/* Get the type and free the info structure */
PciType = PciRegistryInfo->HardwareMechanism & 0xF;
/* Check if this is a type 2 PCI bus with at least one bus */
if ((PciRegistryInfo->NoBuses) && (PciType == 2))
{
/* Setup the PCI slot */
PciSlot.u.bits.Reserved = 0;
PciSlot.u.bits.FunctionNumber = 0;
/* Loop all slots */
for (i = 0; i < 32; i++)
{
/* Try to setup a Type 2 PCI slot */
PciType = 2;
BusHandler = HalpAllocateAndInitPciBusHandler(2, 0, TRUE);
if (!BusHandler) break;
/* Now check if it's valid */
if (HalpIsValidPCIDevice(BusHandler, PciSlot)) break;
/* Heh, the BIOS lied... try Type 1 */
PciType = 1;
BusHandler = HalpAllocateAndInitPciBusHandler(1, 0, TRUE);
if (!BusHandler) break;
/* Now check if it's valid */
if (HalpIsValidPCIDevice(BusHandler, PciSlot)) break;
/* Keep trying */
PciType = 2;
}
/* Now allocate the correct kind of handler */
HalpAllocateAndInitPciBusHandler(PciType, 0, FALSE);
}
/* Okay, now loop all PCI bridges */
do
{
/* Loop all PCI buses */
for (i = 0; i < PciRegistryInfo->NoBuses; i++)
{
/* Check if we have a handler for it */
if (!HalHandlerForBus(PCIBus, i))
{
/* Allocate it */
HalpAllocateAndInitPciBusHandler(PciType, i, FALSE);
}
}
/* Go to the next bridge */
} while (HalpGetPciBridgeConfig(PciType, &PciRegistryInfo->NoBuses));
/* Now build correct address range informaiton */
HalpFixupPciSupportedRanges(PciRegistryInfo->NoBuses);
/* Loop every bus */
DbgPrint("\n====== PCI BUS HARDWARE DETECTION =======\n\n");
PciSlot.u.bits.Reserved = 0;
for (i = 0; i < PciRegistryInfo->NoBuses; i++)
{
/* Get the bus handler */
BusHandler = HalHandlerForBus(PCIBus, i);
/* Loop every device */
for (j = 0; j < 32; j++)
{
/* Loop every function */
PciSlot.u.bits.DeviceNumber = j;
for (k = 0; k < 8; k++)
{
/* Build the final slot structure */
PciSlot.u.bits.FunctionNumber = k;
/* Read the configuration information */
HalpReadPCIConfig(BusHandler,
PciSlot,
PciData,
0,
PCI_COMMON_HDR_LENGTH);
/* Skip if this is an invalid function */
if (PciData->VendorID == PCI_INVALID_VENDORID) continue;
/* Print out the entry */
HalpDebugPciDumpBus(i, j, k, PciData);
/* Check if this is a Cardbus bridge */
if (PCI_CONFIGURATION_TYPE(PciData) == PCI_CARDBUS_BRIDGE_TYPE)
{
/* Not supported */
DbgPrint("\tDevice is a PCI Cardbus Bridge. It will not work!\n");
continue;
}
/* Check if this is a PCI device */
if (PCI_CONFIGURATION_TYPE(PciData) != PCI_BRIDGE_TYPE)
{
/* Check if it has an interrupt pin and line registered */
if ((PciData->u.type1.InterruptPin) &&
(PciData->u.type1.InterruptLine))
{
/* Check if this interrupt line is connected to the bus */
if (PciData->u.type1.InterruptLine < 16)
{
/* Is this an IDE device? */
if (!HalpIsIdeDevice(PciData))
{
/* We'll mask out this interrupt then */
DbgPrint("\tDevice is using IRQ %d! ISA Cards using that IRQ may fail!\n",
PciData->u.type1.InterruptLine);
HalpPciIrqMask |= (1 << PciData->u.type1.InterruptLine);
}
}
}
}
/* Check for broken Intel chips */
if (PciData->VendorID == 0x8086)
{
/* Check for broken 82830 PCI controller */
if ((PciData->DeviceID == 0x04A3) &&
(PciData->RevisionID < 0x11))
{
/* Skip */
DbgPrint("\tDevice is a broken Intel 82430 PCI Controller. It will not work!\n\n");
continue;
}
/* Check for broken 82378 PCI-to-ISA Bridge */
if ((PciData->DeviceID == 0x0484) &&
(PciData->RevisionID <= 3))
{
/* Skip */
DbgPrint("\tDevice is a broken Intel 82378 PCI-to-ISA Bridge. It will not work!\n\n");
continue;
}
/* Check for broken 82450 PCI Bridge */
if ((PciData->DeviceID == 0x84C4) &&
(PciData->RevisionID <= 4))
{
DbgPrint("\tDevice is a Intel Orion 82450 PCI Bridge. It will not work!\n\n");
continue;
}
}
/* Do we know this card? */
if (!ExtendedAddressDecoding)
{
/* Check for it */
if (HalpIsRecognizedCard(PciRegistryInfo,
PciData,
HALP_CARD_FEATURE_FULL_DECODE))
{
/* We'll do chipset checks later */
DbgPrint("\tDevice has Extended Address Decoding. It may fail to work on older BIOSes!\n");
ExtendedAddressDecoding = TRUE;
}
}
/* Now check the registry for chipset hacks */
Status = HalpGetChipHacks(PciData->VendorID,
PciData->DeviceID,
PciData->RevisionID,
&HackFlags);
if (NT_SUCCESS(Status))
{
/* Check for broken ACPI routing */
if (HackFlags & HAL_PCI_CHIP_HACK_DISABLE_ACPI_IRQ_ROUTING)
{
DbgPrint("This chipset has broken ACPI IRQ Routing! Be aware!\n\n");
continue;
}
/* Check for broken ACPI timer */
if (HackFlags & HAL_PCI_CHIP_HACK_BROKEN_ACPI_TIMER)
{
DbgPrint("This chipset has a broken ACPI timer! Be aware!\n\n");
continue;
}
/* Check for hibernate-disable */
if (HackFlags & HAL_PCI_CHIP_HACK_DISABLE_HIBERNATE)
{
DbgPrint("This chipset has a broken PCI device which is incompatible with hibernation. Be aware!\n\n");
continue;
}
/* Check for USB controllers that generate SMIs */
if (HackFlags & HAL_PCI_CHIP_HACK_USB_SMI_DISABLE)
{
DbgPrint("This chipset has a USB controller which generates SMIs. ReactOS will likely fail to boot!\n\n");
continue;
}
}
/* Terminate the entry */
DbgPrint("\n");
}
}
}
/* Initialize NMI Crash Flag */
HalpGetNMICrashFlag();
/* Free the registry data */
ExFreePoolWithTag(PciRegistryInfo, TAG_HAL);
/* Tell PnP if this hard supports correct decoding */
HalpMarkChipsetDecode(ExtendedAddressDecoding);
DbgPrint("====== PCI BUS DETECTION COMPLETE =======\n\n");
#endif
}