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[HAL] Xbox needs more PCI blacklisting!

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CORE-16216
This commit is contained in:
Stanislav Motylkov 2019-08-17 20:03:39 +03:00 committed by Mark Jansen
parent 12dc1089ec
commit 251bf49127
1 changed files with 15 additions and 0 deletions
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15
hal/halx86/legacy/bus/pcibus.c
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@ -325,6 +325,21 @@ HalpValidPCISlot(IN PBUS_HANDLER BusHandler,
if (Slot.u.bits.Reserved) return FALSE;
if (Slot.u.bits.DeviceNumber >= BusData->MaxDevice) return FALSE;
#ifdef SARCH_XBOX
/* Trying to get PCI config data from devices 0:0:1 and 0:0:2 will completely
* hang the Xbox. Also, the device number doesn't seem to be decoded for the
* video card, so it appears to be present on 1:0:0 - 1:31:0.
* We hack around these problems by indicating "device not present" for devices
* 0:0:1, 0:0:2, 1:1:0, 1:2:0, 1:3:0, ...., 1:31:0 */
if ((BusHandler->BusNumber == 0 && Slot.u.bits.DeviceNumber == 0 &&
(Slot.u.bits.FunctionNumber == 1 || Slot.u.bits.FunctionNumber == 2)) ||
(BusHandler->BusNumber == 1 && Slot.u.bits.DeviceNumber != 0))
{
DPRINT("HalpValidPCISlot(): Blacklisted PCI slot (%d:%d:%d)\n", BusHandler->BusNumber, Slot.u.bits.DeviceNumber, Slot.u.bits.FunctionNumber);
return FALSE;
}
#endif
/* Function 0 doesn't need checking */
if (!Slot.u.bits.FunctionNumber) return TRUE;