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141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
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* PROJECT: ReactOS i8042 (ps/2 keyboard-mouse controller) driver
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: drivers/input/i8042prt/ps2pp.c
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* PURPOSE: ps2pp protocol handling
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* PROGRAMMERS: Copyright Martijn Vernooij (o112w8r02@sneakemail.com)
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* Copyright 2006-2007 Hervé Poussineau (hpoussin@reactos.org)
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*/
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/* INCLUDES ****************************************************************/
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#include "i8042prt.h"
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#include <debug.h>
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/* FUNCTIONS *****************************************************************/
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VOID
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i8042MouHandlePs2pp(
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IN PI8042_MOUSE_EXTENSION DeviceExtension,
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IN UCHAR Input)
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{
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UCHAR PktType;
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PMOUSE_INPUT_DATA MouseInput;
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MouseInput = DeviceExtension->MouseBuffer + DeviceExtension->MouseInBuffer;
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/* First, collect 3 bytes for a packet
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* We can detect out-of-sync only by checking
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* the whole packet anyway.
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*
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* If bit 7 and 8 of the first byte are 0, its
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* a normal packet.
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*
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* Otherwise, the packet is different, like this:
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* 1: E 1 b3 b2 1 x x x
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* 2: x x b1 b0 x1 x0 1 0
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* 3: x x x x x x x1 x0
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*
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* b3-0 form a code that specifies the packet type:
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*
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* 0 Device Type
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* 1 Rollers and buttons
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* 2 Reserved
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* 3 Reserved
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* 4 Device ID
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* 5 Channel & Battery
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* 6 Wireless notifications
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* 7 Reserved
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* 8 ShortID LSB (ShortID is a number that is supposed to differentiate
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* 9 ShortID MSB between your mouse and your neighbours')
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* 10 Reserved
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* 11 Mouse capabilities
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* 12 Remote control LSB
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* 13 Remote control MSB
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* 14 Reserved
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* 15 Extended packet
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*/
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switch (DeviceExtension->MouseState)
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{
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case MouseIdle:
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case XMovement:
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DeviceExtension->MouseLogiBuffer[DeviceExtension->MouseState] = Input;
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DeviceExtension->MouseState++;
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break;
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case YMovement:
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DeviceExtension->MouseLogiBuffer[2] = Input;
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DeviceExtension->MouseState = MouseIdle;
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/* first check if it's a normal packet */
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if (!(DeviceExtension->MouseLogiBuffer[0] & 0xC0))
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{
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DeviceExtension->MouseState = MouseIdle;
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i8042MouHandle(DeviceExtension, DeviceExtension->MouseLogiBuffer[0]);
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i8042MouHandle(DeviceExtension, DeviceExtension->MouseLogiBuffer[1]);
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i8042MouHandle(DeviceExtension, DeviceExtension->MouseLogiBuffer[2]);
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/* We could care about wether MouseState really
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* advances, but we don't need to because we're
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* only doing three bytes anyway, so the packet
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* will never complete if it's broken.
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*/
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return;
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}
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/* sanity check */
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if (((DeviceExtension->MouseLogiBuffer[0] & 0x48) != 0x48) ||
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(((DeviceExtension->MouseLogiBuffer[1] & 0x0C) >> 2) !=
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(DeviceExtension->MouseLogiBuffer[2] & 0x03)))
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{
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WARN_(I8042PRT, "Ps2pp packet fails sanity checks\n");
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return;
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}
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/* Now get the packet type */
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PktType = ((DeviceExtension->MouseLogiBuffer[0] & 0x30) >> 2) |
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((DeviceExtension->MouseLogiBuffer[1] & 0x30) >> 4);
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switch (PktType)
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{
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case 0:
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/* The packet contains the device ID, but we
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* already read that in the initialization
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* sequence. Ignore it.
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*/
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return;
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case 1:
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RtlZeroMemory(MouseInput, sizeof(MOUSE_INPUT_DATA));
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if (DeviceExtension->MouseLogiBuffer[2] & 0x10)
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MouseInput->RawButtons |= MOUSE_BUTTON_4_DOWN;
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if (DeviceExtension->MouseLogiBuffer[2] & 0x20)
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MouseInput->RawButtons |= MOUSE_BUTTON_5_DOWN;
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if (DeviceExtension->MouseLogiBuffer[2] & 0x0F)
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{
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MouseInput->ButtonFlags |= MOUSE_WHEEL;
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if (DeviceExtension->MouseLogiBuffer[2] & 0x08)
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MouseInput->ButtonData = (DeviceExtension->MouseLogiBuffer[2] & 0x07) - 8;
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else
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MouseInput->ButtonData = DeviceExtension->MouseLogiBuffer[2] & 0x07;
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}
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i8042MouHandleButtons(
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DeviceExtension,
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MOUSE_BUTTON_4_DOWN | MOUSE_BUTTON_5_DOWN);
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DeviceExtension->MouseHook.QueueMousePacket(DeviceExtension->MouseHook.CallContext);
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return;
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default:
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/* These are for things that would probably
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* be handled by logitechs own driver.
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*/
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return;
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}
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default:
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WARN_(I8042PRT, "Unexpected input state for ps2pp!\n");
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}
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}
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