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/*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "mvOs.h"
#include "mvCpuL2Cntrs.h"
MV_CPU_L2_CNTRS_ENTRY mvCpuL2CntrsTbl[MV_CPU_L2_CNTRS_NUM];
MV_CPU_L2_CNTRS_EVENT* mvCpuL2CntrsEventTbl[128];
void mvCpuL2CntrsReset(void)
{
MV_U32 reg = 0;
MV_ASM ("mcr p15, 6, %0, c15, c13, 0" : : "r" (reg));
MV_ASM ("mcr p15, 6, %0, c15, c13, 1" : : "r" (reg));
MV_ASM ("mcr p15, 6, %0, c15, c13, 2" : : "r" (reg));
MV_ASM ("mcr p15, 6, %0, c15, c13, 3" : : "r" (reg));
}
static void mvCpuL2CntrConfig(int counter, int op)
{
MV_U32 reg = (1 << op) | 0x1; /*enable*/
switch(counter)
{
case 0:
MV_ASM ("mcr p15, 6, %0, c15, c12, 0" : : "r" (reg));
return;
case 1:
MV_ASM ("mcr p15, 6, %0, c15, c12, 1" : : "r" (reg));
return;
default:
mvOsPrintf("mvCpuL2CntrConfig: bad counter number (%d)\n", counter);
}
return;
}
void mvCpuL2CntrsEventClear(MV_CPU_L2_CNTRS_EVENT* pEvent)
{
int i;
for(i=0; i<MV_CPU_L2_CNTRS_NUM; i++)
{
pEvent->counters_sum[i] = 0;
}
pEvent->num_of_measurements = 0;
}
MV_CPU_L2_CNTRS_EVENT* mvCpuL2CntrsEventCreate(char* name, MV_U32 print_threshold)
{
int i;
MV_CPU_L2_CNTRS_EVENT* event = mvOsMalloc(sizeof(MV_CPU_L2_CNTRS_EVENT));
if(event)
{
strncpy(event->name, name, sizeof(event->name));
event->num_of_measurements = 0;
event->avg_sample_count = print_threshold;
for(i=0; i<MV_CPU_L2_CNTRS_NUM; i++)
{
event->counters_before[i] = 0;
event->counters_after[i] = 0;
event->counters_sum[i] = 0;
}
}
return event;
}
void mvCpuL2CntrsEventDelete(MV_CPU_L2_CNTRS_EVENT* event)
{
if(event != NULL)
mvOsFree(event);
}
MV_STATUS mvCpuL2CntrsProgram(int counter, MV_CPU_L2_CNTRS_OPS op,
char* name, MV_U32 overhead)
{
strncpy(mvCpuL2CntrsTbl[counter].name, name, sizeof(mvCpuL2CntrsTbl[counter].name));
mvCpuL2CntrsTbl[counter].operation = op;
mvCpuL2CntrsTbl[counter].opIdx = op;
mvCpuL2CntrsTbl[counter].overhead = overhead;
mvCpuL2CntrConfig(counter, op);
mvOsPrintf("CPU L2 Counter %d: operation=%d, overhead=%d\n",
counter, op, overhead);
return MV_OK;
}
void mvCpuL2CntrsShow(MV_CPU_L2_CNTRS_EVENT* pEvent)
{
int i;
MV_U64 counters_avg;
if(pEvent->num_of_measurements < pEvent->avg_sample_count)
return;
mvOsPrintf("%16s: ", pEvent->name);
for(i=0; i<MV_CPU_L2_CNTRS_NUM; i++)
{
counters_avg = mvOsDivMod64(pEvent->counters_sum[i],
pEvent->num_of_measurements, NULL);
if(counters_avg >= mvCpuL2CntrsTbl[i].overhead)
counters_avg -= mvCpuL2CntrsTbl[i].overhead;
else
counters_avg = 0;
mvOsPrintf("%s=%5llu, ", mvCpuL2CntrsTbl[i].name, counters_avg);
}
mvOsPrintf("\n");
mvCpuL2CntrsEventClear(pEvent);
mvCpuL2CntrsReset();
}
void mvCpuL2CntrsStatus(void)
{
int i;
for(i=0; i<MV_CPU_L2_CNTRS_NUM; i++)
{
mvOsPrintf("#%d: %s, overhead=%d\n",
i, mvCpuL2CntrsTbl[i].name, mvCpuL2CntrsTbl[i].overhead);
}
}
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