BOOLEAN STDCALL
ps2_mouse_handler(PKINTERRUPT Interrupt, PVOID ServiceContext)
{
- // char tmpstr[100];
PDEVICE_OBJECT DeviceObject = (PDEVICE_OBJECT)ServiceContext;
PDEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
-
int state_dx, state_dy, state_buttons;
unsigned scancode;
unsigned status = controller_read_status();
scancode = controller_read_input();
- // Don't handle the mouse event if we aren't connected to the mouse class driver
- if(DeviceExtension->ClassInformation.CallBack == NULL) return FALSE;
+ /*
+ * Don't handle the mouse event if we aren't connected to the mouse class
+ * driver
+ */
+ if (DeviceExtension->ClassInformation.CallBack == NULL)
+ {
+ return FALSE;
+ }
- if((status & CONTROLLER_STATUS_MOUSE_OUTPUT_BUFFER_FULL) != 0)
- {
- // mouse_handle_event(scancode); proceed to handle it
- }
+ if ((status & CONTROLLER_STATUS_MOUSE_OUTPUT_BUFFER_FULL) != 0)
+ {
+ // mouse_handle_event(scancode); proceed to handle it
+ }
else
- {
- return FALSE; // keyboard_handle_event(scancode);
- }
+ {
+ return FALSE; // keyboard_handle_event(scancode);
+ }
if (mouse_replies_expected > 0)
- {
- if (scancode == MOUSE_ACK)
{
- mouse_replies_expected--;
- return;
+ if (scancode == MOUSE_ACK)
+ {
+ mouse_replies_expected--;
+ return;
+ }
+
+ mouse_replies_expected = 0;
}
-
- mouse_replies_expected = 0;
- }
/* Add this scancode to the mouse event queue. */
-
mouse_buffer[mouse_buffer_position] = scancode;
mouse_buffer_position++;
-
- // If the buffer is full, parse this event
+
+ /* If the buffer is full, parse this event */
if (mouse_buffer_position == 3)
- {
- mouse_buffer_position = 0;
- // system_call_debug_print_simple ("We got a mouse event");
-
- state_buttons = (mouse_buffer[0] & 1) * GPM_B_LEFT +
- (mouse_buffer[0] & 2) * GPM_B_RIGHT +
- (mouse_buffer[0] & 4) * GPM_B_MIDDLE;
-
- /* Some PS/2 mice send reports with negative bit set in data[0] and zero for movement. I think this is a
- bug in the mouse, but working around it only causes artifacts when the actual report is -256; they'll
- be treated as zero. This should be rare if the mouse sampling rate is set to a reasonable value; the
- default of 100 Hz is plenty. (Stephen Tell) */
-
- if (mouse_buffer[1] == 0)
- {
- state_dx = 0;
- }
- else
- {
- state_dx = (mouse_buffer[0] & 0x10) ?
- mouse_buffer[1] - 256 :
- mouse_buffer[1];
- }
-
- if (mouse_buffer[2] == 0)
- {
- state_dy = 0;
- }
- else
{
- state_dy = -((mouse_buffer[0] & 0x20) ?
- mouse_buffer[2] - 256 :
- mouse_buffer[2]);
- }
-
+ mouse_buffer_position = 0;
+
+ state_buttons = (mouse_buffer[0] & 1) * GPM_B_LEFT +
+ (mouse_buffer[0] & 2) * GPM_B_RIGHT +
+ (mouse_buffer[0] & 4) * GPM_B_MIDDLE;
+
+ /*
+ * Some PS/2 mice send reports with negative bit set in data[0] and zero
+ * for movement. I think this is a bug in the mouse, but working around
+ * it only causes artifacts when the actual report is -256; they'll
+ * be treated as zero. This should be rare if the mouse sampling rate is
+ * set to a reasonable value; the default of 100 Hz is plenty.
+ * (Stephen Tell)
+ */
+ if (mouse_buffer[1] == 0)
+ {
+ state_dx = 0;
+ }
+ else
+ {
+ state_dx = (mouse_buffer[0] & 0x10) ?
+ mouse_buffer[1] - 256 :
+ mouse_buffer[1];
+ }
+
+ if (mouse_buffer[2] == 0)
+ {
+ state_dy = 0;
+ }
+ else
+ {
+ state_dy = -((mouse_buffer[0] & 0x20) ?
+ mouse_buffer[2] - 256 :
+ mouse_buffer[2]);
+ }
+
if (((state_dx!=0) || (state_dy!=0) || (state_buttons!=0)))
- {
- // FIXME: Implement button state, see /include/ntddmous.h
-
- DeviceObject = (PDEVICE_OBJECT)ServiceContext;
- DeviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
-
- if (DeviceExtension->InputDataCount == MOUSE_BUFFER_SIZE)
- {
- return TRUE;
- }
-
- DeviceExtension->MouseInputData[DeviceExtension->InputDataCount].RawButtons = state_buttons;
- DeviceExtension->MouseInputData[DeviceExtension->InputDataCount].ButtonData = state_buttons;
- DeviceExtension->MouseInputData[DeviceExtension->InputDataCount].LastX = state_dx;
- DeviceExtension->MouseInputData[DeviceExtension->InputDataCount].LastY = state_dy;
- DeviceExtension->InputDataCount++;
-
- KeInsertQueueDpc(&DeviceExtension->IsrDpc, DeviceObject->CurrentIrp, NULL);
-
- return TRUE;
+ {
+ ULONG Queue;
+ PMOUSE_INPUT_DATA Input;
+
+ /* FIXME: Implement button state, see /include/ntddmous.h */
+
+ DeviceObject = (PDEVICE_OBJECT)ServiceContext;
+ DeviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
+ Queue = DeviceExtension->ActiveQueue % 2;
+
+ if (DeviceExtension->InputDataCount[Queue] == MOUSE_BUFFER_SIZE)
+ {
+ return TRUE;
+ }
+
+ Input = &DeviceExtension->MouseInputData[Queue]
+ [DeviceExtension->InputDataCount[Queue]];
+ Input->RawButtons = state_buttons;
+ Input->ButtonData = state_buttons;
+ Input->LastX = state_dx;
+ Input->LastY = state_dy;
+ DeviceExtension->InputDataCount[Queue]++;
+
+ KeInsertQueueDpc(&DeviceExtension->IsrDpc, DeviceObject->CurrentIrp,
+ NULL);
+ return TRUE;
}
}
}
has_mouse = TRUE;
- DeviceExtension->InputDataCount = 0;
- DeviceExtension->MouseInputData = ExAllocatePool(NonPagedPool, sizeof(MOUSE_INPUT_DATA) * MOUSE_BUFFER_SIZE);
+ DeviceExtension->InputDataCount[0] = 0;
+ DeviceExtension->InputDataCount[1] = 0;
+ DeviceExtension->ActiveQueue = 0;
// Enable the PS/2 mouse port
controller_write_command_word (CONTROLLER_COMMAND_MOUSE_ENABLE);
git://git.jankratochvil.net / reactos.git / blobdiff