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[HAL] HalpDebugPciDumpBus: Fix parsing bugs

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- Bridge devices don't have Subsystem ID and Subsystem Vendor ID
- Also they have only two BARs, don't parse data outside of bounds

Addendum to b232efe1. CORE-16319 CORE-16216
This commit is contained in:
Stanislav Motylkov 2021-05-24 17:24:24 +03:00
parent 2047cf3613
commit 5caa59b31a
No known key found for this signature in database
GPG key ID: AFE513258CBA9E92
1 changed files with 31 additions and 18 deletions
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49
hal/halx86/legacy/bussupp.c
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@ -791,6 +791,7 @@ HalpDebugPciDumpBus(IN ULONG i,
IN PPCI_COMMON_CONFIG PciData)
{
PCHAR p, ClassName, Boundary, SubClassName, VendorName, ProductName, SubVendorName;
UCHAR HeaderType;
ULONG Length;
CHAR LookupString[16] = "";
CHAR bSubClassName[64] = "Unknown";
@ -799,6 +800,8 @@ HalpDebugPciDumpBus(IN ULONG i,
CHAR bSubVendorName[128] = "Unknown";
ULONG Size, Mem, b;
HeaderType = (PciData->HeaderType & ~PCI_MULTIFUNCTION);
/* Isolate the class name */
sprintf(LookupString, "C %02x ", PciData->BaseClass);
ClassName = strstr((PCHAR)ClassTable, LookupString);
@ -872,16 +875,20 @@ HalpDebugPciDumpBus(IN ULONG i,
p += strlen("\r\n");
}
Boundary = p;
SubVendorName = NULL;
/* Isolate the subvendor and subsystem name */
sprintf(LookupString,
"\t\t%04x %04x ",
PciData->u.type0.SubVendorID,
PciData->u.type0.SubSystemID);
SubVendorName = strstr(ProductName, LookupString);
if (Boundary && SubVendorName >= Boundary)
if (HeaderType == PCI_DEVICE_TYPE)
{
SubVendorName = NULL;
/* Isolate the subvendor and subsystem name */
sprintf(LookupString,
"\t\t%04x %04x ",
PciData->u.type0.SubVendorID,
PciData->u.type0.SubSystemID);
SubVendorName = strstr(ProductName, LookupString);
if (Boundary && SubVendorName >= Boundary)
{
SubVendorName = NULL;
}
}
if (SubVendorName)
{
@ -897,8 +904,7 @@ HalpDebugPciDumpBus(IN ULONG i,
}
/* Print out the data */
DbgPrint("%02x:%02x.%x %s [%02x%02x]: %s %s [%04x:%04x] (rev %02x)\n"
"\tSubsystem: %s [%04x:%04x]\n",
DbgPrint("%02x:%02x.%x %s [%02x%02x]: %s %s [%04x:%04x] (rev %02x)\n",
i,
j,
k,
@ -909,10 +915,15 @@ HalpDebugPciDumpBus(IN ULONG i,
bProductName,
PciData->VendorID,
PciData->DeviceID,
PciData->RevisionID,
bSubVendorName,
PciData->u.type0.SubVendorID,
PciData->u.type0.SubSystemID);
PciData->RevisionID);
if (HeaderType == PCI_DEVICE_TYPE)
{
DbgPrint("\tSubsystem: %s [%04x:%04x]\n",
bSubVendorName,
PciData->u.type0.SubVendorID,
PciData->u.type0.SubSystemID);
}
/* Print out and decode flags */
DbgPrint("\tFlags:");
@ -929,8 +940,7 @@ HalpDebugPciDumpBus(IN ULONG i,
else if (PciData->u.type0.InterruptPin != 0) DbgPrint(", IRQ assignment required");
DbgPrint("\n");
if ((PciData->HeaderType & ~PCI_MULTIFUNCTION) == PCI_BRIDGE_TYPE &&
PciData->BaseClass == PCI_CLASS_BRIDGE_DEV)
if (HeaderType == PCI_BRIDGE_TYPE)
{
DbgPrint("\tBridge:");
DbgPrint(" primary bus %d,", PciData->u.type1.PrimaryBus);
@ -942,10 +952,13 @@ HalpDebugPciDumpBus(IN ULONG i,
/* Scan addresses */
Size = 0;
for (b = 0; b < PCI_TYPE0_ADDRESSES; b++)
for (b = 0; b < (HeaderType == PCI_DEVICE_TYPE ? PCI_TYPE0_ADDRESSES : PCI_TYPE1_ADDRESSES); b++)
{
/* Check for a BAR */
Mem = PciData->u.type0.BaseAddresses[b];
if (HeaderType != PCI_CARDBUS_BRIDGE_TYPE)
Mem = PciData->u.type0.BaseAddresses[b];
else
Mem = 0;
if (Mem)
{
/* Decode the address type */