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[ISAPNP] Create resource list ahead of IRP_MN_QUERY_RESOURCES

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This commit is contained in:
Hervé Poussineau 2020-03-21 17:37:45 +01:00
parent debec8c96e
commit 61c1079a18
3 changed files with 53 additions and 28 deletions
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43
drivers/bus/isapnp/isapnp.c
View file

@ -379,6 +379,45 @@ IsaPnpCreateReadPortDORequirements(
return STATUS_SUCCESS;
}
static
NTSTATUS
NTAPI
IsaPnpCreateReadPortDOResources(
IN PISAPNP_PDO_EXTENSION PdoExt)
{
USHORT Ports[] = { ISAPNP_WRITE_DATA, ISAPNP_ADDRESS };
ULONG ListSize, i;
PCM_RESOURCE_LIST ResourceList;
PCM_PARTIAL_RESOURCE_DESCRIPTOR Descriptor;
ListSize = sizeof(CM_RESOURCE_LIST)
+ (ARRAYSIZE(Ports) - 1) * sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR);
ResourceList = ExAllocatePool(PagedPool, ListSize);
if (!ResourceList)
return STATUS_NO_MEMORY;
RtlZeroMemory(ResourceList, ListSize);
ResourceList->Count = 1;
ResourceList->List[0].InterfaceType = Internal;
ResourceList->List[0].PartialResourceList.Version = 1;
ResourceList->List[0].PartialResourceList.Revision = 1;
ResourceList->List[0].PartialResourceList.Count = 2;
for (i = 0; i < ARRAYSIZE(Ports); i++)
{
Descriptor = &ResourceList->List[0].PartialResourceList.PartialDescriptors[i];
Descriptor->Type = CmResourceTypePort;
Descriptor->ShareDisposition = CmResourceShareDeviceExclusive;
Descriptor->Flags = CM_RESOURCE_PORT_16_BIT_DECODE;
Descriptor->u.Port.Length = 0x01;
Descriptor->u.Port.Start.LowPart = Ports[i];
}
PdoExt->ResourceList = ResourceList;
PdoExt->ResourceListSize = ListSize;
return STATUS_SUCCESS;
}
static
NTSTATUS
NTAPI
@ -435,6 +474,10 @@ IsaPnpCreateReadPortDO(PISAPNP_FDO_EXTENSION FdoExt)
if (!NT_SUCCESS(Status))
return Status;
Status = IsaPnpCreateReadPortDOResources(PdoExt);
if (!NT_SUCCESS(Status))
return Status;
return Status;
}

2
drivers/bus/isapnp/isapnp.h
View file

@ -54,6 +54,8 @@ typedef struct _ISAPNP_PDO_EXTENSION {
UNICODE_STRING CompatibleIDs;
UNICODE_STRING InstanceID;
PIO_RESOURCE_REQUIREMENTS_LIST RequirementsList;
PCM_RESOURCE_LIST ResourceList;
ULONG ResourceListSize;
} ISAPNP_PDO_EXTENSION, *PISAPNP_PDO_EXTENSION;
/* isapnp.c */

36
drivers/bus/isapnp/pdo.c
View file

@ -6,7 +6,6 @@
*/
#include <isapnp.h>
#include <isapnphw.h>
#define NDEBUG
#include <debug.h>
@ -144,34 +143,18 @@ IsaPdoQueryResources(
IN PIRP Irp,
IN PIO_STACK_LOCATION IrpSp)
{
USHORT Ports[] = { ISAPNP_WRITE_DATA, ISAPNP_ADDRESS };
ULONG ListSize, i;
ULONG ListSize;
PCM_RESOURCE_LIST ResourceList;
PCM_PARTIAL_RESOURCE_DESCRIPTOR Descriptor;
ListSize = sizeof(CM_RESOURCE_LIST)
+ (ARRAYSIZE(Ports) - 1) * sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR);
ResourceList = ExAllocatePool(NonPagedPool, ListSize);
if (!PdoExt->ResourceList)
return Irp->IoStatus.Status;
ListSize = PdoExt->ResourceListSize;
ResourceList = ExAllocatePool(PagedPool, ListSize);
if (!ResourceList)
return STATUS_NO_MEMORY;
RtlZeroMemory(ResourceList, ListSize);
ResourceList->Count = 1;
ResourceList->List[0].InterfaceType = Internal;
ResourceList->List[0].PartialResourceList.Version = 1;
ResourceList->List[0].PartialResourceList.Revision = 1;
ResourceList->List[0].PartialResourceList.Count = 2;
for (i = 0; i < ARRAYSIZE(Ports); i++)
{
Descriptor = &ResourceList->List[0].PartialResourceList.PartialDescriptors[i];
Descriptor->Type = CmResourceTypePort;
Descriptor->ShareDisposition = CmResourceShareDeviceExclusive;
Descriptor->Flags = CM_RESOURCE_PORT_16_BIT_DECODE;
Descriptor->u.Port.Length = 0x01;
Descriptor->u.Port.Start.LowPart = Ports[i];
}
RtlCopyMemory(ResourceList, PdoExt->ResourceList, ListSize);
Irp->IoStatus.Information = (ULONG_PTR)ResourceList;
return STATUS_SUCCESS;
}
@ -348,10 +331,7 @@ IsaPdoPnp(
break;
case IRP_MN_QUERY_RESOURCES:
if (PdoExt->Common.Self == PdoExt->FdoExt->DataPortPdo)
Status = IsaPdoQueryResources(PdoExt, Irp, IrpSp);
else
DPRINT1("IRP_MN_QUERY_RESOURCES is UNIMPLEMENTED!\n");
Status = IsaPdoQueryResources(PdoExt, Irp, IrpSp);
break;
case IRP_MN_QUERY_RESOURCE_REQUIREMENTS: