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Definition at line 17 of file ps2pp.c. Referenced by i8042MouInterruptService(). {
UCHAR PktType;
PMOUSE_INPUT_DATA MouseInput;
MouseInput = DeviceExtension->MouseBuffer + DeviceExtension->MouseInBuffer;
/* First, collect 3 bytes for a packet
* We can detect out-of-sync only by checking
* the whole packet anyway.
*
* If bit 7 and 8 of the first byte are 0, its
* a normal packet.
*
* Otherwise, the packet is different, like this:
* 1: E 1 b3 b2 1 x x x
* 2: x x b1 b0 x1 x0 1 0
* 3: x x x x x x x1 x0
*
* b3-0 form a code that specifies the packet type:
*
* 0 Device Type
* 1 Rollers and buttons
* 2 Reserved
* 3 Reserved
* 4 Device ID
* 5 Channel & Battery
* 6 Wireless notifications
* 7 Reserved
* 8 ShortID LSB (ShortID is a number that is supposed to differentiate
* 9 ShortID MSB between your mouse and your neighbours')
* 10 Reserved
* 11 Mouse capabilities
* 12 Remote control LSB
* 13 Remote control MSB
* 14 Reserved
* 15 Extended packet
*/
switch (DeviceExtension->MouseState)
{
case MouseIdle:
case XMovement:
DeviceExtension->MouseLogiBuffer[DeviceExtension->MouseState] = Input;
DeviceExtension->MouseState++;
break;
case YMovement:
DeviceExtension->MouseLogiBuffer[2] = Input;
DeviceExtension->MouseState = MouseIdle;
/* first check if it's a normal packet */
if (!(DeviceExtension->MouseLogiBuffer[0] & 0xC0))
{
DeviceExtension->MouseState = MouseIdle;
i8042MouHandle(DeviceExtension, DeviceExtension->MouseLogiBuffer[0]);
i8042MouHandle(DeviceExtension, DeviceExtension->MouseLogiBuffer[1]);
i8042MouHandle(DeviceExtension, DeviceExtension->MouseLogiBuffer[2]);
/* We could care about wether MouseState really
* advances, but we don't need to because we're
* only doing three bytes anyway, so the packet
* will never complete if it's broken.
*/
return;
}
/* sanity check */
if (((DeviceExtension->MouseLogiBuffer[0] & 0x48) != 0x48) ||
(((DeviceExtension->MouseLogiBuffer[1] & 0x0C) >> 2) !=
(DeviceExtension->MouseLogiBuffer[2] & 0x03)))
{
WARN_(I8042PRT, "Ps2pp packet fails sanity checks\n");
return;
}
/* Now get the packet type */
PktType = ((DeviceExtension->MouseLogiBuffer[0] & 0x30) >> 2) |
((DeviceExtension->MouseLogiBuffer[1] & 0x30) >> 4);
switch (PktType)
{
case 0:
/* The packet contains the device ID, but we
* already read that in the initialization
* sequence. Ignore it.
*/
return;
case 1:
RtlZeroMemory(MouseInput, sizeof(MOUSE_INPUT_DATA));
if (DeviceExtension->MouseLogiBuffer[2] & 0x10)
MouseInput->RawButtons |= MOUSE_BUTTON_4_DOWN;
if (DeviceExtension->MouseLogiBuffer[2] & 0x20)
MouseInput->RawButtons |= MOUSE_BUTTON_5_DOWN;
if (DeviceExtension->MouseLogiBuffer[2] & 0x0F)
{
MouseInput->ButtonFlags |= MOUSE_WHEEL;
if (DeviceExtension->MouseLogiBuffer[2] & 0x08)
MouseInput->ButtonData = (DeviceExtension->MouseLogiBuffer[2] & 0x07) - 8;
else
MouseInput->ButtonData = DeviceExtension->MouseLogiBuffer[2] & 0x07;
}
i8042MouHandleButtons(
DeviceExtension,
MOUSE_BUTTON_4_DOWN | MOUSE_BUTTON_5_DOWN);
DeviceExtension->MouseHook.QueueMousePacket(DeviceExtension->MouseHook.CallContext);
return;
default:
/* These are for things that would probably
* be handled by logitechs own driver.
*/
return;
}
default:
WARN_(I8042PRT, "Unexpected input state for ps2pp!\n");
}
}
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Generated on Thu May 24 2012 05:24:03 for ReactOS by
1.7.6.1
