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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
*/
//* Function: *
//* Utility routines for managing MBIUs
#include "VSA2.H"
#include "PROTOS.H"
#include "GX2.H"
#include "VPCI.H"
#include "DESCR.H"
#include "SYSMGR.H"
extern void InitStatCounters(ULONG, UCHAR);
// External variables:
extern ULONG Mbiu0;
// Local variables:
ULONG ExtendedMemoryDescr0, ExtendedMemoryDescr1 = 0;
MBIU_INFO MbiuInfo[MAX_MBIU];
UCHAR NumMbius=0;
//***********************************************************************
// Called once for each MBIU:
// - Initializes statistic counters
// - Records all available descriptors
//***********************************************************************
void pascal Init_MBIU(UCHAR * CountPtr, ULONG Msr)
{ UCHAR Type, i;
ULONG Default[2], MsrData[2];
// Record info about MBIU
MbiuInfo[NumMbius].Mbiu = Msr;
MbiuInfo[NumMbius].SubtrPid = Read_MSR_LO(Msr + MBD_MSR_CONFIG) << 29;
MbiuInfo[NumMbius].NumCounters = ((CAPABILITIES *)CountPtr)->NSTATS;
MbiuInfo[NumMbius].ActiveCounters = 0x00;
MbiuInfo[NumMbius].ClockGating = Read_MSR_LO(Msr + MBD_MSR_PM);
// Clear SMIs on this MBIU & disable all events except HW Emulation
MsrData[0] = 0x0000000E;
MsrData[1] = 0x0000000F;
(USHORT)Msr = MBD_MSR_SMI;
Write_MSR(Msr, MsrData);
//*********************************************
// Initialize Statistics MSRs
//*********************************************
InitStatCounters(Msr, ((CAPABILITIES *)CountPtr)->NSTATS);
//*********************************************
// Begin with P2D_BM descriptors
//*********************************************
Type = P2D_BM;
(USHORT)Msr = MSR_MEM_DESCR;
do {
// Get number of next type of descriptor
if (i = *(CountPtr++)) {
// Get the default value for this descriptor type
Get_Descriptor_Default(Type, Default);
// Loop through all descriptors of a given type
do {
// If descriptor is already in use by the BIOS, skip it
Read_MSR(Msr, MsrData);
if ((MsrData[0] == Default[0]) && (MsrData[1] == Default[1])) {
// Initialize Descriptor[] entry
if (Init_Descr(Type, Msr)) {
// Not enough table entries...abort
Type = 0x99;
break;
}
} else {
// Descriptor is in use.
// If it's an extended memory descriptor, record the routing address.
if (Type == P2D_R) {
if ((Msr & ROUTING) == Mbiu0) {
ExtendedMemoryDescr0 = Msr;
} else {
ExtendedMemoryDescr1 = Msr;
}
}
}
Msr++;
} while (--i);
}
// Check next descriptor type.
// If transitioning from P2D to IOD descriptors...
if (++Type == IOD_BM) {
// change MSR offset to 0xE0
(USHORT)Msr = MSR_IO_DESCR;
}
} while (Type <= IOD_SC);
// Increment number of MBIUs
NumMbius++;
}
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