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[ISAPNP] Create resource requirements ahead of IRP_MN_QUERY_RESOURCE_REQUIREMENTS

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This commit is contained in:
Hervé Poussineau 2020-03-21 16:58:21 +01:00
parent 1dcc6f8b94
commit debec8c96e
3 changed files with 64 additions and 39 deletions
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55
drivers/bus/isapnp/isapnp.c
View file

@ -6,6 +6,7 @@
*/
#include <isapnp.h>
#include <isapnphw.h>
#define NDEBUG
#include <debug.h>
@ -328,6 +329,56 @@ IsaReadWrite(
return STATUS_NOT_SUPPORTED;
}
static
NTSTATUS
NTAPI
IsaPnpCreateReadPortDORequirements(
IN PISAPNP_PDO_EXTENSION PdoExt)
{
USHORT Ports[] = { ISAPNP_WRITE_DATA, ISAPNP_ADDRESS, 0x274, 0x3e4, 0x204, 0x2e4, 0x354, 0x2f4 };
ULONG ListSize, i;
PIO_RESOURCE_REQUIREMENTS_LIST RequirementsList;
PIO_RESOURCE_DESCRIPTOR Descriptor;
ListSize = sizeof(IO_RESOURCE_REQUIREMENTS_LIST)
+ 2 * ARRAYSIZE(Ports) * sizeof(IO_RESOURCE_DESCRIPTOR);
RequirementsList = ExAllocatePool(PagedPool, ListSize);
if (!RequirementsList)
return STATUS_NO_MEMORY;
RtlZeroMemory(RequirementsList, ListSize);
RequirementsList->ListSize = ListSize;
RequirementsList->AlternativeLists = 1;
RequirementsList->List[0].Version = 1;
RequirementsList->List[0].Revision = 1;
RequirementsList->List[0].Count = 2 * ARRAYSIZE(Ports);
for (i = 0; i < 2 * ARRAYSIZE(Ports); i += 2)
{
Descriptor = &RequirementsList->List[0].Descriptors[i];
/* Expected port */
Descriptor[0].Type = CmResourceTypePort;
Descriptor[0].ShareDisposition = CmResourceShareDeviceExclusive;
Descriptor[0].Flags = CM_RESOURCE_PORT_16_BIT_DECODE;
Descriptor[0].u.Port.Length = Ports[i / 2] & 1 ? 0x01 : 0x04;
Descriptor[0].u.Port.Alignment = 0x01;
Descriptor[0].u.Port.MinimumAddress.LowPart = Ports[i / 2];
Descriptor[0].u.Port.MaximumAddress.LowPart = Ports[i / 2] + Descriptor[0].u.Port.Length - 1;
/* ... but mark it as optional */
Descriptor[1].Option = IO_RESOURCE_ALTERNATIVE;
Descriptor[1].Type = CmResourceTypePort;
Descriptor[1].ShareDisposition = CmResourceShareDeviceExclusive;
Descriptor[1].Flags = CM_RESOURCE_PORT_16_BIT_DECODE;
Descriptor[1].u.Port.Alignment = 0x01;
}
PdoExt->RequirementsList = RequirementsList;
return STATUS_SUCCESS;
}
static
NTSTATUS
NTAPI
@ -380,6 +431,10 @@ IsaPnpCreateReadPortDO(PISAPNP_FDO_EXTENSION FdoExt)
if (!NT_SUCCESS(Status))
return Status;
Status = IsaPnpCreateReadPortDORequirements(PdoExt);
if (!NT_SUCCESS(Status))
return Status;
return Status;
}

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

@ -53,6 +53,7 @@ typedef struct _ISAPNP_PDO_EXTENSION {
UNICODE_STRING HardwareIDs;
UNICODE_STRING CompatibleIDs;
UNICODE_STRING InstanceID;
PIO_RESOURCE_REQUIREMENTS_LIST RequirementsList;
} ISAPNP_PDO_EXTENSION, *PISAPNP_PDO_EXTENSION;
/* isapnp.c */

45
drivers/bus/isapnp/pdo.c
View file

@ -183,46 +183,18 @@ IsaPdoQueryResourceRequirements(
IN PIRP Irp,
IN PIO_STACK_LOCATION IrpSp)
{
USHORT Ports[] = { ISAPNP_WRITE_DATA, ISAPNP_ADDRESS, 0x274, 0x3e4, 0x204, 0x2e4, 0x354, 0x2f4 };
ULONG ListSize, i;
ULONG ListSize;
PIO_RESOURCE_REQUIREMENTS_LIST RequirementsList;
PIO_RESOURCE_DESCRIPTOR Descriptor;
ListSize = sizeof(IO_RESOURCE_REQUIREMENTS_LIST)
+ 2 * ARRAYSIZE(Ports) * sizeof(IO_RESOURCE_DESCRIPTOR);
RequirementsList = ExAllocatePool(NonPagedPool, ListSize);
if (!PdoExt->RequirementsList)
return Irp->IoStatus.Status;
ListSize = PdoExt->RequirementsList->ListSize;
RequirementsList = ExAllocatePool(PagedPool, ListSize);
if (!RequirementsList)
return STATUS_NO_MEMORY;
RtlZeroMemory(RequirementsList, ListSize);
RequirementsList->ListSize = ListSize;
RequirementsList->AlternativeLists = 1;
RequirementsList->List[0].Version = 1;
RequirementsList->List[0].Revision = 1;
RequirementsList->List[0].Count = 2 * ARRAYSIZE(Ports);
for (i = 0; i < 2 * ARRAYSIZE(Ports); i += 2)
{
Descriptor = &RequirementsList->List[0].Descriptors[i];
/* Expected port */
Descriptor[0].Type = CmResourceTypePort;
Descriptor[0].ShareDisposition = CmResourceShareDeviceExclusive;
Descriptor[0].Flags = CM_RESOURCE_PORT_16_BIT_DECODE;
Descriptor[0].u.Port.Length = Ports[i / 2] & 1 ? 0x01 : 0x04;
Descriptor[0].u.Port.Alignment = 0x01;
Descriptor[0].u.Port.MinimumAddress.LowPart = Ports[i / 2];
Descriptor[0].u.Port.MaximumAddress.LowPart = Ports[i / 2] + Descriptor[0].u.Port.Length - 1;
/* ... but mark it as optional */
Descriptor[1].Option = IO_RESOURCE_ALTERNATIVE;
Descriptor[1].Type = CmResourceTypePort;
Descriptor[1].ShareDisposition = CmResourceShareDeviceExclusive;
Descriptor[1].Flags = CM_RESOURCE_PORT_16_BIT_DECODE;
Descriptor[1].u.Port.Alignment = 0x01;
}
RtlCopyMemory(RequirementsList, PdoExt->RequirementsList, ListSize);
Irp->IoStatus.Information = (ULONG_PTR)RequirementsList;
return STATUS_SUCCESS;
}
@ -383,10 +355,7 @@ IsaPdoPnp(
break;
case IRP_MN_QUERY_RESOURCE_REQUIREMENTS:
if (PdoExt->Common.Self == PdoExt->FdoExt->DataPortPdo)
Status = IsaPdoQueryResourceRequirements(PdoExt, Irp, IrpSp);
else
DPRINT1("IRP_MN_QUERY_RESOURCE_REQUIREMENTS is UNIMPLEMENTED!\n");
break;
case IRP_MN_QUERY_ID: