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hidclass.sys: Implement IRP_MJ_READ for HID Devices.

This commit is contained in:
Aric Stewart 2015-09-14 09:58:44 -05:00 committed by Alexandre Julliard
parent 01aa7a6ec1
commit 1de389ae2b
4 changed files with 80 additions and 0 deletions
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33
dlls/hidclass.sys/buffer.c
View File

@ -80,6 +80,39 @@ void RingBuffer_Destroy(struct ReportRingBuffer *ring)
HeapFree(GetProcessHeap(), 0, ring);
}
UINT RingBuffer_GetBufferSize(struct ReportRingBuffer *ring)
{
return ring->buffer_size;
}
void RingBuffer_Read(struct ReportRingBuffer *ring, UINT index, void *output, UINT *size)
{
void *ret = NULL;
EnterCriticalSection(&ring->lock);
if (index >= ring->pointer_alloc || ring->pointers[index] == 0xffffffff)
{
LeaveCriticalSection(&ring->lock);
*size = 0;
return;
}
if (ring->pointers[index] == ring->end)
{
LeaveCriticalSection(&ring->lock);
*size = 0;
}
else
{
ret = &ring->buffer[ring->pointers[index] * ring->buffer_size];
memcpy(output, ret, ring->buffer_size);
ring->pointers[index]++;
if (ring->pointers[index] == ring->size)
ring->pointers[index] = 0;
LeaveCriticalSection(&ring->lock);
*size = ring->buffer_size;
}
}
UINT RingBuffer_AddPointer(struct ReportRingBuffer *ring)
{
UINT idx;

43
dlls/hidclass.sys/device.c
View File

@ -36,6 +36,7 @@
#include "devguid.h"
WINE_DEFAULT_DEBUG_CHANNEL(hid);
WINE_DECLARE_DEBUG_CHANNEL(hid_report);
static const WCHAR device_name_fmtW[] = {'\\','D','e','v','i','c','e',
'\\','H','I','D','#','%','p','&','%','p',0};
@ -352,6 +353,48 @@ NTSTATUS WINAPI HID_Device_ioctl(DEVICE_OBJECT *device, IRP *irp)
return rc;
}
NTSTATUS WINAPI HID_Device_read(DEVICE_OBJECT *device, IRP *irp)
{
HID_XFER_PACKET *packet;
BASE_DEVICE_EXTENSION *ext = device->DeviceExtension;
UINT buffer_size = RingBuffer_GetBufferSize(ext->ring_buffer);
NTSTATUS rc = STATUS_SUCCESS;
int ptr = -1;
packet = HeapAlloc(GetProcessHeap(), 0, buffer_size);
ptr = PtrToUlong( irp->Tail.Overlay.OriginalFileObject->FsContext );
irp->IoStatus.Information = 0;
RingBuffer_Read(ext->ring_buffer, ptr, packet, &buffer_size);
if (buffer_size)
{
IO_STACK_LOCATION *irpsp = IoGetCurrentIrpStackLocation( irp );
TRACE_(hid_report)("Got Packet %p %i\n", packet->reportBuffer, packet->reportBufferLen);
if (irpsp->Parameters.Read.Length >= packet->reportBufferLen)
{
memcpy(irp->AssociatedIrp.SystemBuffer, packet->reportBuffer, packet->reportBufferLen);
irp->IoStatus.Information = packet->reportBufferLen;
irp->IoStatus.u.Status = STATUS_SUCCESS;
}
else
{
irp->IoStatus.Information = 0;
irp->IoStatus.u.Status = STATUS_BUFFER_OVERFLOW;
}
IoCompleteRequest( irp, IO_NO_INCREMENT );
}
else
{
TRACE_(hid_report)("Queue irp\n");
InsertTailList(&ext->irp_queue, &irp->Tail.Overlay.ListEntry);
rc = STATUS_PENDING;
}
HeapFree(GetProcessHeap(), 0, packet);
return rc;
}
NTSTATUS WINAPI HID_Device_create(DEVICE_OBJECT *device, IRP *irp)
{
BASE_DEVICE_EXTENSION *ext = device->DeviceExtension;

3
dlls/hidclass.sys/hid.h
View File

@ -58,6 +58,8 @@ typedef struct _BASE_DEVICE_EXTENSTION {
UINT RingBuffer_AddPointer(struct ReportRingBuffer *buffer) DECLSPEC_HIDDEN;
void RingBuffer_RemovePointer(struct ReportRingBuffer *ring, UINT index) DECLSPEC_HIDDEN;
void RingBuffer_Read(struct ReportRingBuffer *buffer, UINT index, void *output, UINT *size) DECLSPEC_HIDDEN;
UINT RingBuffer_GetBufferSize(struct ReportRingBuffer *buffer) DECLSPEC_HIDDEN;
void RingBuffer_Destroy(struct ReportRingBuffer *buffer) DECLSPEC_HIDDEN;
struct ReportRingBuffer* RingBuffer_Create(UINT buffer_size) DECLSPEC_HIDDEN;
@ -81,6 +83,7 @@ NTSTATUS HID_LinkDevice(DEVICE_OBJECT *device, LPCWSTR serial, LPCWSTR index) DE
void HID_DeleteDevice(HID_MINIDRIVER_REGISTRATION *driver, DEVICE_OBJECT *device) DECLSPEC_HIDDEN;
NTSTATUS WINAPI HID_Device_ioctl(DEVICE_OBJECT *device, IRP *irp) DECLSPEC_HIDDEN;
NTSTATUS WINAPI HID_Device_read(DEVICE_OBJECT *device, IRP *irp) DECLSPEC_HIDDEN;
NTSTATUS WINAPI HID_Device_create(DEVICE_OBJECT *device, IRP *irp) DECLSPEC_HIDDEN;
NTSTATUS WINAPI HID_Device_close(DEVICE_OBJECT *device, IRP *irp) DECLSPEC_HIDDEN;

1
dlls/hidclass.sys/main.c
View File

@ -69,6 +69,7 @@ NTSTATUS WINAPI HidRegisterMinidriver(HID_MINIDRIVER_REGISTRATION *registration)
registration->DriverObject->DriverUnload = UnloadDriver;
registration->DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = HID_Device_ioctl;
registration->DriverObject->MajorFunction[IRP_MJ_READ] = HID_Device_read;
registration->DriverObject->MajorFunction[IRP_MJ_CREATE] = HID_Device_create;
registration->DriverObject->MajorFunction[IRP_MJ_CLOSE] = HID_Device_close;