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/*
* Copyright (c) 2006-2008 Advanced Micro Devices,Inc. ("AMD").
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*/
//******************************************************************************
//* This file contains SWAPSiFs
//******************************************************************************
#include "vsa2.h"
#include "protos.h"
#include "chipset.h"
#include "legacy.h"
#include "pci.h"
// External variables
extern Hardware SystemInfo;
// Local variables
ULONG OHCI_Address[2];
UCHAR WinCE_Flag = 1;
//*****************************************************************
// Fixes 118.438 - OHCI May Not Recognize Device Attach/Removal
//*****************************************************************
void pascal OHCI_SWAPSiF(UCHAR Flag)
{ PRIORITY Priority = 0;
static PRIORITY LastPriority = 0x5555;
switch (SystemInfo.Chipset_ID) {
case DEVICE_ID_5536:
break;
default:
if (Flag == 0) {
Priority = UNREGISTER_PRIORITY;
}
if (Priority != LastPriority) {
LastPriority = Priority;
SYS_REGISTER_EVENT(EVENT_TIMER, USBF_PERIOD, USBF_HANDLE, Priority);
}
break;
}
}
#define HcControl 0x0004
#define HCFS 0x000000C0L
#define USB_RESET 0x00000000L
#define USB_RESUME 0x00000040L
#define USB_OPERATIONAL 0x00000080L
#define USB_SUSPEND 0x000000C0L
#define IR 0x00000100L
#define HceControl 0x0100
//***********************************************************************
void Do_OHCI_SWAPSif(void)
{ ULONG i, PCI_Addr, HC_Addr, OldValue;
for (i=0; i<=1; i++) {
// Get base of Host Controller's registers
HC_Addr = OHCI_Address[i];
// Ignore this tick if BAR is being sized
if (HC_Addr == 0xFFFFF000 || HC_Addr == 0x00000000) {
continue;
}
// Check if Host Controller registers are accessible
PCI_Addr = 0x80007C00L + (i<<8);
if (READ_PCI_BYTE(PCI_Addr + COMMAND) & MEM_SPACE) {
OldValue = READ_MEMORY(HC_Addr + HcControl);
// WinCE doesn't perform a valid Ownership Change.
// It disables MIE then performs the Ownership Change request.
// This code detects that situation and turns emulation off.
// Otherwise, neither the USB keyboard or PS/2 keyboard works.
if ((i == 0) && (OldValue & IR) == 0 && WinCE_Flag) {
WinCE_Flag = 0; // Only do this once
WRITE_MEMORY(HC_Addr + HceControl, 0x00);
}
// Transition through Operational to clear possible attach/detach glitch
if ((OldValue & USB_SUSPEND) == USB_SUSPEND) {
WRITE_MEMORY(HC_Addr + HcControl, USB_OPERATIONAL);
WRITE_MEMORY(HC_Addr + HcControl, OldValue);
}
}
}
}
//***********************************************************************
// Initialization for the OHCI attach/detach hardware bug
//***********************************************************************
void Init_OHCI_SWAPSiF(UCHAR InitStage)
{
switch (InitStage) {
case EARLY_INIT:
// Trap writes to SB F4 & F5 BAR0 in order keep current OHCI BAR values
SYS_REGISTER_EVENT(EVENT_PCI_TRAP, 0x7C10, WRITES_ONLY | 0x100, 0);
break;
case END_OF_POST_INIT:
// Turn on the timer
OHCI_SWAPSiF(1);
break;
}
}
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