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[ISAPNP] Disable I/O range check before activation

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See Table A-2 of "Plug and Play ISA Specification 1.0a"
This commit is contained in:
Dmitry Borisov 2021-03-20 20:53:06 +06:00
parent 367f4b1581
commit e318d22940
3 changed files with 10 additions and 3 deletions
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10
drivers/bus/isapnp/hardware.c
View file

@ -168,9 +168,14 @@ static
inline
VOID
ActivateDevice(
_In_ PUCHAR ReadDataPort,
_In_ UCHAR LogDev)
{
WriteLogicalDeviceNumber(LogDev);
WriteByte(ISAPNP_IORANGECHECK,
ReadByte(ReadDataPort, ISAPNP_IORANGECHECK) & ~2);
WriteByte(ISAPNP_ACTIVATE, 1);
}
@ -1341,7 +1346,7 @@ IsaHwFillDeviceList(
PISAPNP_PDO_EXTENSION PdoExt = LogDevice->Pdo->DeviceExtension;
if (PdoExt->Common.State == dsStarted)
ActivateDevice(LogDev);
ActivateDevice(FdoExt->ReadDataPort, LogDev);
}
DPRINT("Skip CSN %u, LDN %u\n", LogDevice->CSN, LogDevice->LDN);
@ -1412,9 +1417,10 @@ IsaHwWakeDevice(
_IRQL_requires_max_(DISPATCH_LEVEL)
VOID
IsaHwActivateDevice(
_In_ PISAPNP_FDO_EXTENSION FdoExt,
_In_ PISAPNP_LOGICAL_DEVICE LogicalDevice)
{
ActivateDevice(LogicalDevice->LDN);
ActivateDevice(FdoExt->ReadDataPort, LogicalDevice->LDN);
}
_IRQL_requires_max_(DISPATCH_LEVEL)

1
drivers/bus/isapnp/isapnp.h
View file

@ -388,6 +388,7 @@ IsaHwDeactivateDevice(
_IRQL_requires_max_(DISPATCH_LEVEL)
VOID
IsaHwActivateDevice(
_In_ PISAPNP_FDO_EXTENSION FdoExt,
_In_ PISAPNP_LOGICAL_DEVICE LogicalDevice);
_IRQL_requires_max_(DISPATCH_LEVEL)

2
drivers/bus/isapnp/pdo.c
View file

@ -899,7 +899,7 @@ IsaPdoPnp(
Status = STATUS_SUCCESS;
IsaHwActivateDevice(PdoExt->IsaPnpDevice);
IsaHwActivateDevice(PdoExt->FdoExt, PdoExt->IsaPnpDevice);
IsaHwWaitForKey();
}
else