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+//**********************************************************************
+//**********************************************************************
+//** **
+//** (C)Copyright 1985-2011, American Megatrends, Inc. **
+//** **
+//** All Rights Reserved. **
+//** **
+//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
+//** **
+//** Phone: (770)-246-8600 **
+//** **
+//**********************************************************************
+//**********************************************************************
+// $Header: /Alaska/SOURCE/Modules/KbcEmulation/ALASKA/KBCEMUL/VirtualMouse.c 6 3/04/14 6:19a Nimishsv $
+//
+// $Revision: 6 $
+//
+// $Date: 3/04/14 6:19a $
+//
+//****************************************************************************
+// Revision History
+// ----------------
+// $Log: /Alaska/SOURCE/Modules/KbcEmulation/ALASKA/KBCEMUL/VirtualMouse.c $
+//
+// 6 3/04/14 6:19a Nimishsv
+// [TAG] EIP156041
+// [Category] Improvement
+// [Description] Aptio 4.x, KbcEmulation: Send the mouse data to EBDA
+// and only the last data through KBC
+// [Files] VirtualMouse.c
+//
+// 5 2/10/11 1:08a Rameshr
+// [TAG] EIP53687
+// [Category] Improvement
+// [Description] AMI headers update for KbcEmulation Module
+//
+// [Files] KbcEmul.mak,KbcEmul.dxs,KbcEmul.c,KbcEmul.h,KbcEmulLib.h,Kbc
+// EmulLib.c,Kbc.h,KbcDevEmul.h,Kbccore.c,Legacykbc.c,Legacykbd.c,LegacyMo
+// use.c,VirtualKbc.c,VirtualKbd.c,VirtualMouse.c,Ap4x.h,Ap4x.c,KbcUhci.c,
+// KbcUhci.h,KbcEmulIrq.c, KbcOhci.c, Kbcohci.h
+//
+// 4 7/08/10 2:02a Rameshr
+// Ohci Emulation support Added.
+// EIP 39712
+//
+// 3 6/30/09 11:32a Rameshr
+// Coding Standard and File header updated.
+//
+// 2 10/30/08 10:47a Rameshraju
+// Keyboard & Mouse enable/disable command handled
+//
+// 1 12/14/07 10:26a Rameshraju
+// Initial Check-in
+//****************************************************************************
+
+//<AMI_FHDR_START>
+//****************************************************************************
+// Name: VirtualMouse.c
+//
+// Description: Handles the Virtual mouse functions
+//
+//****************************************************************************
+//<AMI_FHDR_END>
+#include "KbcEmul.h"
+#include "KbcDevEmul.h"
+
+#define COUNTOF(x) (sizeof(x)/sizeof(x[0]))
+
+static UINT8 resetResp[] = {0xFA, 0xAA, 0x00 } ;
+static UINT8 statusResp[] = {0xFA, 0x20, 0x02, 0x64 } ;
+static UINT8 dataResp[] = {0xFA, 0x08, 0x00, 0x0 } ;
+static UINT8 ackResp[] = {0xFA};
+static UINT8 idResp[] = {0xFA, 0};
+static UINT8 unknResp[] = {0xFE };
+
+void mouse_reciev_option(PS2SINK* mouse, UINT8 cmd );
+void mouse_initParams(VIRTMOUSE* mouse);
+void vmouse_flushBuffer(VIRTMOUSE* mouse);
+void vmouse_send_resp(VIRTMOUSE* mouse, UINT8* data, int count );
+void mouse_echo(PS2SINK* mouse, UINT8 cmd );
+BOOLEAN SendMouseBuffer(VIRTMOUSE* mouse, UINT8* packet, UINTN Count );
+void vmouse_pumpQueue(PS2SINK* ps2dev);
+extern GenerateIRQ12(VIRTKBC*);
+
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: mouse_idle
+//
+// Description: Handle commands sent from KBC to PS2 Mouse. Mouse idle, waiting for command or key
+//
+// Input: ps2dev - pointer to the Mouse structure
+// Cmd - Data from the kbc buffer
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+void mouse_idle(PS2SINK* ps2dev, UINT8 cmd )
+{
+ VIRTMOUSE* mouse = (VIRTMOUSE*)ps2dev;
+
+ switch(cmd){
+ //
+ //reset
+ //
+ case 0xFF:
+ mouse_initParams(mouse);
+ vmouse_send_resp(mouse, resetResp,COUNTOF(resetResp));
+ break;
+ //
+ //report status
+ //
+ case 0xE9:
+ vmouse_send_resp(mouse, statusResp,COUNTOF(statusResp));
+ break;
+ //
+ //read data
+ //
+ case 0xEB:
+ MemCpy(dataResp+1,&mouse->dataPacket,sizeof(mouse->dataPacket));
+ vmouse_flushBuffer(mouse);
+ vmouse_send_resp(mouse, dataResp,COUNTOF(dataResp));
+ break;
+ //
+ //Enable Mouse
+ //
+ case 0xF4:
+ mouse->Enabled = TRUE;
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ break;
+ //
+ //Disable Mouse
+ //
+ case 0xF5:
+ mouse->Enabled = FALSE;
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ break;
+ //
+ //Set Streaming
+ //
+ case 0xEA:
+ mouse->streaming = 1;
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ break;
+ //
+ //Set Remote
+ //
+ case 0xF0:
+ mouse->streaming = 0;
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ break;
+ //
+ //Set Standard, Set Scaling and Reset Scaling
+ //
+ case 0xF6:
+ case 0xE6:
+ case 0xE7:
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ break;
+ //
+ //Identify
+ //
+ case 0xF2:
+ vmouse_send_resp(mouse, idResp,COUNTOF(idResp));
+ break;
+
+ //
+ // set resolution
+ //
+ case 0xE8:
+ mouse->option_ptr = &mouse->resolution_;
+ ps2dev->onCommand = mouse_reciev_option;
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ break;
+ //
+ // set sampling rate
+ //
+ case 0xF3:
+ mouse->option_ptr = &mouse->samplingRate_;
+ ps2dev->onCommand = mouse_reciev_option;
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ break;
+ case 0xEE:
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ ps2dev->onCommand = mouse_echo;
+ break;
+ //
+ //unknown command; send FE
+ //
+ default:
+ vmouse_send_resp(mouse, unknResp,COUNTOF(unknResp));
+ break;
+ }
+}
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: mouse_echo
+//
+// Description: Mouse Echo command
+//
+// Input: ps2dev - pointer to the Mouse structure
+// Cmd - Data from the kbc buffer
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+void mouse_echo(PS2SINK* ps2dev, UINT8 cmd )
+{
+ VIRTMOUSE* mouse = (VIRTMOUSE*)ps2dev;
+ if( cmd == 0xEC ){
+ ps2dev->onCommand = mouse_idle;
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+ } else
+ vmouse_send_resp(mouse, &cmd,1);
+
+}
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: mouse_reciev_option
+//
+// Description: Mouse reciev command
+//
+// Input: ps2dev - pointer to the KBD structure
+// Cmd - Data from the kbc buffer
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+void mouse_reciev_option(PS2SINK* ps2dev, UINT8 cmd )
+{
+ VIRTMOUSE* mouse = (VIRTMOUSE*)ps2dev;
+ *(mouse->option_ptr) = cmd;
+ ps2dev->onCommand = mouse_idle;
+ vmouse_send_resp(mouse, ackResp,COUNTOF(ackResp));
+}
+
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: msInput_Send
+//
+// Description: Mouse Input source sends data. Put the data into the buffer, attempt to send the first byte.
+// The call comes outside of Trapping Leg access. Check that Trapping status will not be overriden
+//
+// Input: P - pointer to the Emulation Protocol
+// Data - Ps2 mouse Data
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+EFI_STATUS EFIAPI msInput_Send(
+ IN EFI_EMUL6064MSINPUT_PROTOCOL * This,
+ IN PS2MouseData* data
+ )
+{
+ VIRTMOUSE* mouse = _CR(This,VIRTMOUSE,msInput_);
+#if USB_MOUSE_UPDATE_EBDA_DATA
+ UINT16 ebdaSeg = *(UINT16*)0x40E;
+ UINT8 *ebda = (UINT8*)((UINTN)ebdaSeg<<4);
+
+ // Return EFI NOT READY if EBDA has some data.
+ // Let USB resend the data if the EBDA is not empty
+ if ( 0 != ebda[0x26] ) {
+ return EFI_NOT_READY;
+ }
+#endif
+ //
+ //clear all previous flags except overflow
+ //
+ mouse->dataPacket.flags &= (PS2MSFLAGS_XO|PS2MSFLAGS_YO);
+ //
+ //copy overflow and button flags from new packet
+ //
+ mouse->dataPacket.flags |= data->flags & ~(PS2MSFLAGS_XSIGN|PS2MSFLAGS_YSIGN);
+ mouse->dataPacket.flags |= 0x8;
+ if( (mouse->dataPacket.flags & PS2MSFLAGS_XO) == 0){
+ if(data->flags & PS2MSFLAGS_XSIGN){
+ mouse->x += (signed short)((UINT8)data->x | 0xFF00);
+ } else {
+ mouse->x += data->x;
+ }
+ mouse->dataPacket.x = (UINT8)(UINT32)(mouse->x);
+ if( mouse->x < 0 ){
+ mouse->dataPacket.flags |= PS2MSFLAGS_XSIGN;
+ if( mouse->x < -256 )
+ mouse->dataPacket.flags |= PS2MSFLAGS_XO;
+ } else {
+ if( mouse->x > 256 )
+ mouse->dataPacket.flags |= PS2MSFLAGS_XO;
+ }
+ }
+
+ if( (mouse->dataPacket.flags & PS2MSFLAGS_YO) == 0){
+ if(data->flags & PS2MSFLAGS_YSIGN){
+ mouse->y += (signed short)((UINT8)data->y | 0xFF00);
+ } else {
+ mouse->y += data->y;
+ }
+ mouse->dataPacket.y = (UINT8)(UINT32)(mouse->y);
+ if( mouse->y < 0 ){
+ mouse->dataPacket.flags |= PS2MSFLAGS_YSIGN;
+ if( mouse->y < -256 )
+ mouse->dataPacket.flags |= PS2MSFLAGS_YO;
+ } else{
+ if( mouse->y > 256 )
+ mouse->dataPacket.flags |= PS2MSFLAGS_YO;
+ }
+ }
+
+ mouse->fFreshPacket = 1;
+ if( mouse->Enabled && mouse->streaming ){
+ if( SendMouseBuffer(mouse,(UINT8*)&mouse->dataPacket,sizeof(mouse->dataPacket)))
+ {
+ vmouse_flushBuffer(mouse);
+ }
+ }
+ return EFI_SUCCESS;
+}
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: SendMouseBuffer
+//
+// Description: Send the mouse packet to KBC
+//
+// Input: Mouse - pointer to the Mouse Structure
+// Packetr - Mouse Data
+// Count - Data Length
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+BOOLEAN SendMouseBuffer(VIRTMOUSE* mouse, UINT8* packet, UINTN Count )
+{
+ UINTN FreeQueue = 0;
+#if USB_MOUSE_UPDATE_EBDA_DATA
+ UINT16 ebdaSeg = *(UINT16*)0x40E;
+ UINT8 *ebda = (UINT8*)((UINTN)ebdaSeg<<4);
+ UINT8 packageSize = ebda[0x27] & 7;
+ UINT8 index=0;
+#endif
+ //
+ // count of free items in the queue
+ //
+ if( mouse->qtail >= mouse->qhead )
+ FreeQueue = MOUSEQUEUE_SIZE - (mouse->qtail - mouse->qhead);
+ else
+ FreeQueue = mouse->qhead - mouse->qtail;
+
+ if(FreeQueue < Count )
+ return TRUE;
+
+ //
+ //place the Mouse data in mouse buffer
+ //
+ for( ; Count > 0; --Count ){
+ *mouse->qtail++ = *packet++;
+ if(mouse->qtail >= mouse->queue+MOUSEQUEUE_SIZE)
+ mouse->qtail = mouse->queue;
+ }
+
+ //
+ //Place the dummy 4th byte in mouse buffer,
+ //
+// *mouse->qtail++ = 0;
+// if(mouse->qtail >= mouse->queue+MOUSEQUEUE_SIZE)
+// mouse->qtail = mouse->queue;
+
+#if USB_MOUSE_UPDATE_EBDA_DATA
+ // Write the 1st two bytes of mouse packet to EBDA and last byte to KBC
+ for (; index<=packageSize; index++) {
+ if (index == 0) {
+ ebda[0x28+index] = *mouse->qhead;
+ ebda[0x26]++;
+ if(++mouse->qhead >= mouse->queue+MOUSEQUEUE_SIZE)
+ mouse->qhead = mouse->queue;
+ }
+ if (index == 1) {
+ ebda[0x28+index] = *mouse->qhead;
+ ebda[0x26]++;
+ if(++mouse->qhead >= mouse->queue+MOUSEQUEUE_SIZE)
+ mouse->qhead = mouse->queue;
+ }
+ if (index == 2) {
+ vmouse_pumpQueue(&mouse->sink);
+ }
+ }
+#else
+ //Put the first byte in the KBC buffer
+ vmouse_pumpQueue(&mouse->sink);
+#endif
+
+ return TRUE;
+}
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: vmouse_pumpQueue
+//
+// Description: KBC has empty queue; Legacy I/O trapping is being processed.If mouse has data to push into KBC,
+// now is a good time to do it
+//
+// Input: ps2dev - pointer to the Mouse structure
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+void vmouse_pumpQueue(PS2SINK* ps2dev)
+{
+ VIRTMOUSE* mouse = (VIRTMOUSE*)ps2dev;
+
+ //
+ //Put the data into KBC
+ //
+ if((mouse->qhead != mouse->qtail) && (ps2dev->kbc->send_outb1(ps2dev->kbc,PS2DEV_MOUSE,FALSE,*mouse->qhead))) {
+ if(++mouse->qhead >= mouse->queue+MOUSEQUEUE_SIZE)
+ mouse->qhead = mouse->queue;
+ }
+}
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: vmouse_send_resp
+//
+// Description: Place the Response bytes in the keyboard buffer.
+//
+// Input: Mousev - pointer to the Mouse structure
+// Data - Pointer to the Data
+// count - Length of the data
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+void vmouse_send_resp(VIRTMOUSE* mouse, UINT8* data, int count )
+{
+ if(mouse->sink.present_ ){
+ //
+ // Emulation must provide the response. Override any previos mouse data queued to KBC
+ //
+ mouse->qtail = mouse->qhead = mouse->queue;
+ for( ; count > 0; --count ){
+ *mouse->qtail++ = *data++;
+ }
+
+ ///
+ // push the first byte to the KBC
+ //
+ if( mouse->qhead != mouse->qtail &&
+ mouse->sink.kbc->send_outb1(mouse->sink.kbc,
+ PS2DEV_MOUSE,TRUE,*mouse->qhead))
+ {
+ if(++mouse->qhead >= mouse->queue+MOUSEQUEUE_SIZE)
+ mouse->qhead = mouse->queue; }
+ }
+}
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: vmouse_flushBuffer
+//
+// Description: Clear the mouse data buffer that tracks the mouse changes; after the data is cleared any data read
+// will return zero (x,y) and current buttons state.
+//
+// Input: ps2dev - pointer to the KBD structure
+// Cmd - Data from the kbc buffer
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+void vmouse_flushBuffer(VIRTMOUSE* mouse)
+{
+ mouse->x = mouse->y = 0;
+ mouse->dataPacket.x = mouse->dataPacket.y = 0;
+ mouse->dataPacket.flags &= (PS2MSFLAGS_LBUTTON|PS2MSFLAGS_RBUTTON);
+ mouse->fFreshPacket = 0;
+}
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: mouse_initParams
+//
+// Description: Initialize the mouse data
+//
+// Input: kbd - Pointer to the mouse structure
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+void mouse_initParams(VIRTMOUSE* mouse)
+{
+ mouse->samplingRate_ = 0x64;
+ mouse->resolution_ = 2;
+ mouse->option_ptr = 0;
+ mouse->Enabled = FALSE;
+ mouse->streaming = 1;
+}
+
+//<AMI_PHDR_START>
+//----------------------------------------------------------------------------
+// Procedure: InitVirtualMouse
+//
+// Description: Initialize the Mouse data
+//
+// Input: kbc - pointer to the KBC Structure
+// Mouse - Pointer to the Mouse structure
+//
+// Output: None
+//
+//----------------------------------------------------------------------------
+//<AMI_PHDR_END>
+void InitVirtualMouse(KBC* kbc, VIRTMOUSE* mouse )
+{
+ EFI_HANDLE hEmulationService = 0;
+
+ mouse->qhead = mouse->qtail = mouse->queue;
+ mouse->sink.kbc = kbc;
+ mouse->sink.onCommand = mouse_idle;
+ mouse->sink.onQueueFree = vmouse_pumpQueue;
+ mouse->msInput_.Send = msInput_Send;
+ mouse->x = mouse->y = 0;
+ mouse->dataPacket.flags = 0x8;
+ mouse->dataPacket.x = 0;
+ mouse->dataPacket.y = 0;
+ mouse->fFreshPacket = 0;
+ mouse_initParams(mouse);
+ VERIFY_EFI_ERROR(
+ gBS->InstallProtocolInterface(&hEmulationService,
+ &gEmul6064MsInputProtocolGuid,EFI_NATIVE_INTERFACE,(void*)&mouse->msInput_));
+}
+
+//**********************************************************************
+//**********************************************************************
+//** **
+//** (C)Copyright 1985-2011, American Megatrends, Inc. **
+//** **
+//** All Rights Reserved. **
+//** **
+//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
+//** **
+//** Phone: (770)-246-8600 **
+//** **
+//**********************************************************************
+//**********************************************************************
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