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/*
* This file is part of the LinuxBIOS project.
*
* Copyright (C) 2007 Advanced Micro Devices, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
void InterleaveChannels_D(struct MCTStatStruc *pMCTstat,
struct DCTStatStruc *pDCTstatA)
{
u8 Node;
u32 DramBase, DctSelBase;
u8 DctSelIntLvAddr, DctSelHi;
u8 HoleValid = 0;
u32 HoleSize, HoleBase = 0;
u32 val, tmp;
u32 dct0_size, dct1_size;
u8 enabled;
struct DCTStatStruc *pDCTstat;
/* HoleValid - indicates whether the current Node contains hole.
* HoleSize - indicates whether there is IO hole in the whole system
* memory.
*/
/* call back to wrapper not needed ManualChannelInterleave_D(); */
/* call back - DctSelIntLvAddr = mctGet_NVbits(NV_ChannelIntlv);*/ /* override interleave */
// FIXME: Check for Cx
DctSelIntLvAddr = 5; /* use default: Enable channel interleave */
enabled = 1; /* with Hash*: exclusive OR of address bits[20:16, 6]. */
beforeInterleaveChannels_D(pDCTstatA, &enabled);
if (enabled) {
DctSelIntLvAddr >>= 1;
HoleSize = 0;
if ((pMCTstat->GStatus & (1 << GSB_SoftHole)) ||
(pMCTstat->GStatus & (1 << GSB_HWHole))) {
if (pMCTstat->HoleBase) {
HoleBase = pMCTstat->HoleBase >> 8;
HoleSize = HoleBase & 0xFFFF0000;
HoleSize |= ((~HoleBase) + 1) & 0xFFFF;
}
}
Node = 0;
while (Node < MAX_NODES_SUPPORTED) {
pDCTstat = pDCTstatA + Node;
val = Get_NB32(pDCTstat->dev_map, 0xF0);
if (val & (1 << DramHoleValid))
HoleValid = 1;
if (!pDCTstat->GangedMode && pDCTstat->DIMMValidDCT[0] && pDCTstat->DIMMValidDCT[1]) {
DramBase = pDCTstat->NodeSysBase >> 8;
dct1_size = ((pDCTstat->NodeSysLimit) + 2) >> 8;
dct0_size = Get_NB32(pDCTstat->dev_dct, 0x114);
if (dct0_size >= 0x10000) {
dct0_size -= HoleSize;
}
dct0_size -= DramBase;
dct1_size -= dct0_size;
DctSelHi = 0x05; /* DctSelHiRngEn = 1, DctSelHi = 0 */
if (dct1_size == dct0_size) {
dct1_size = 0;
DctSelHi = 0x04; /* DctSelHiRngEn = 0 */
} else if (dct1_size > dct0_size ) {
dct1_size = dct0_size;
DctSelHi = 0x07; /* DctSelHiRngEn = 1, DctSelHi = 1 */
}
dct0_size = dct1_size;
dct0_size += DramBase;
dct0_size += dct1_size;
if (dct0_size >= HoleBase) /* if DctSelBaseAddr > HoleBase */
dct0_size += HoleBase;
DctSelBase = dct0_size;
if (dct1_size == 0)
dct0_size = 0;
dct0_size -= dct1_size; /* DctSelBaseOffset = DctSelBaseAddr - Interleaved region */
Set_NB32(pDCTstat->dev_dct, 0x114, dct0_size);
if (dct1_size == 0)
dct1_size = DctSelBase;
val = Get_NB32(pDCTstat->dev_dct, 0x110);
val &= 0x7F8;
val |= dct1_size;
val |= DctSelHi;
val |= (DctSelIntLvAddr << 6) & 0xFF;
Set_NB32(pDCTstat->dev_dct, 0x110, val);
print_tx("InterleaveChannels: DRAM Controller Select Low Register = ", val);
if (HoleValid) {
tmp = DramBase;
val = DctSelBase;
if (val < HoleBase) { /* DctSelBaseAddr < DramHoleBase */
val -= DramBase;
val >>= 1;
tmp += val;
}
tmp += HoleSize;
val = Get_NB32(pDCTstat->dev_map, 0xF0); /* DramHoleOffset */
val &= 0x7F;
val |= (tmp & 0xFF);
Set_NB32(pDCTstat->dev_map, 0xF0, val);
print_tx("InterleaveChannels:0xF0 = ", val);
}
}
print_tx("InterleaveChannels_D: Node ", Node);
print_tx("InterleaveChannels_D: Status ", pDCTstat->Status);
print_tx("InterleaveChannels_D: ErrStatus ", pDCTstat->ErrStatus);
print_tx("InterleaveChannels_D: ErrCode ", pDCTstat->ErrCode);
Node++;
}
}
print_t("InterleaveChannels_D: Done\n");
}
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