/*
* pfmlib_torrent.c : IBM Torrent support
*
* Copyright (C) IBM Corporation, 2010. All rights reserved.
* Contributed by Corey Ashford (cjashfor@us.ibm.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <sys/types.h>
#include <dirent.h>
#include <string.h>
#include "pfmlib_priv.h"
#include "pfmlib_power_priv.h"
#include "events/torrent_events.h"
const pfmlib_attr_desc_t torrent_modifiers[] = {
PFM_ATTR_I("type", "Counter type: 0 = 2x64-bit counters w/32-bit prescale, 1 = 4x32-bit counters w/16-bit prescale, 2 = 2x32-bit counters w/no prescale, 3 = 4x16-bit counters w/no prescale"),
PFM_ATTR_I("sel", "Sample period / Cmd Increment select: 0 = 256 cycles/ +16, 1 = 512 cycles / +8, 2 = 1024 cycles / +4, 3 = 2048 cycles / +2"),
PFM_ATTR_I("lo_cmp", "Low threshold compare: 0..31"),
PFM_ATTR_I("hi_cmp", "High threshold compare: 0..31"),
PFM_ATTR_NULL
};
static inline int pfm_torrent_attr2mod(void *this, int pidx, int attr_idx)
{
const pme_torrent_entry_t *pe = this_pe(this);
size_t x;
int n;
n = attr_idx;
pfmlib_for_each_bit(x, pe[pidx].pme_modmsk) {
if (n == 0)
break;
n--;
}
return x;
}
/**
* torrent_pmu_detect
*
* Determine if this machine has a Torrent chip
*
**/
static int pfm_torrent_detect(void* this)
{
struct dirent *de;
DIR *dir;
int ret = PFM_ERR_NOTSUPP;
/* If /proc/device-tree/hfi-iohub@<torrent_chip_id> exists,
* this machine has an accessible Torrent chip */
dir = opendir("/proc/device-tree");
if (!dir)
return PFM_ERR_NOTSUPP;
while ((de = readdir(dir)) != NULL) {
if (!strncmp(de->d_name, "hfi-iohub@", 10)) {
ret = PFM_SUCCESS;
break;
}
}
closedir(dir);
return ret;
}
static int
pfm_torrent_get_event_info(void *this, int pidx, pfm_event_info_t *info)
{
pfmlib_pmu_t *pmu = this;
const pme_torrent_entry_t *pe = this_pe(this);
info->name = pe[pidx].pme_name;
info->desc = pe[pidx].pme_desc ? pe[pidx].pme_desc : "";
info->code = pe[pidx].pme_code;
info->equiv = NULL;
info->idx = pidx; /* private index */
info->pmu = pmu->pmu;
info->dtype = PFM_DTYPE_UINT64;
info->is_precise = 0;
/* unit masks + modifiers */
info->nattrs = pfmlib_popcnt((unsigned long)pe[pidx].pme_modmsk);
return PFM_SUCCESS;
}
static int
pfm_torrent_get_event_attr_info(void *this, int idx, int attr_idx,
pfmlib_event_attr_info_t *info)
{
int m;
m = pfm_torrent_attr2mod(this, idx, attr_idx);
info->name = modx(torrent_modifiers, m, name);
info->desc = modx(torrent_modifiers, m, desc);
info->code = m;
info->type = modx(torrent_modifiers, m, type);
info->equiv = NULL;
info->is_dfl = 0;
info->is_precise = 0;
info->idx = m;
info->dfl_val64 = 0;
info->ctrl = PFM_ATTR_CTRL_PMU;
return PFM_SUCCESS;
}
static int
pfm_torrent_validate_table(void *this, FILE *fp)
{
pfmlib_pmu_t *pmu = this;
const pme_torrent_entry_t *pe = this_pe(this);
int i, ret = PFM_ERR_INVAL;
for (i = 0; i < pmu->pme_count; i++) {
if (!pe[i].pme_name) {
fprintf(fp, "pmu: %s event%d: :: no name\n", pmu->name, i);
goto error;
}
if (pe[i].pme_code == 0) {
fprintf(fp, "pmu: %s event%d: %s :: event code is 0\n", pmu->name, i, pe[i].pme_name);
goto error;
}
}
ret = PFM_SUCCESS;
error:
return ret;
}
static int
pfm_torrent_get_encoding(void *this, pfmlib_event_desc_t *e)
{
const pme_torrent_entry_t *pe = this_pe(this);
uint32_t torrent_pmu;
int i, mod;
e->fstr[0] = '\0'; /* initialize the fully-qualified event string */
e->count = 1;
e->codes[0] = (uint64_t)pe[e->event].pme_code;
for (i = 0; i < e->nattrs; i++) {
mod = pfm_torrent_attr2mod(this, e->event, e->attrs[i].id);
torrent_pmu = pe[e->event].pme_code & (TORRENT_SPACE | TORRENT_PMU_MASK);
switch (torrent_pmu) {
case TORRENT_PBUS_MCD:
switch (mod) {
case TORRENT_ATTR_MCD_TYPE:
if (e->attrs[i].ival <= 3) {
e->codes[0] |= e->attrs[i].ival << TORRENT_ATTR_MCD_TYPE_SHIFT;
} else {
DPRINT("value of attribute \'type\' - %" PRIu64 " - is not in the range 0..3.\n", e->attrs[i].ival);
return PFM_ERR_ATTR_VAL;
}
break;
default:
DPRINT("unknown attribute for TORRENT_POWERBUS_MCD - %d\n", mod);
return PFM_ERR_ATTR;
}
break;
case TORRENT_PBUS_UTIL:
switch (mod) {
case TORRENT_ATTR_UTIL_SEL:
if (e->attrs[i].ival <= 3) {
e->codes[0] |= e->attrs[i].ival << TORRENT_ATTR_UTIL_SEL_SHIFT;
} else {
DPRINT("value of attribute \'sel\' - %" PRIu64 " - is not in the range 0..3.\n", e->attrs[i].ival);
return PFM_ERR_ATTR_VAL;
}
break;
case TORRENT_ATTR_UTIL_LO_CMP:
case TORRENT_ATTR_UTIL_HI_CMP:
if (e->attrs[i].ival <= 31) {
e->codes[0] |= e->attrs[i].ival << TORRENT_ATTR_UTIL_CMP_SHIFT;
} else {
if (mod == TORRENT_ATTR_UTIL_LO_CMP)
DPRINT("value of attribute \'lo_cmp\' - %" PRIu64 " - is not in the range 0..31.\n", e->attrs[i].ival);
else
DPRINT("value of attribute \'hi_cmp\' - %" PRIu64 " - is not in the range 0..31.\n", e->attrs[i].ival);
return PFM_ERR_ATTR_VAL;
}
}
break;
default:
DPRINT("attributes are unsupported for this Torrent PMU - code = %" PRIx32 "\n", torrent_pmu);
return PFM_ERR_ATTR;
}
}
return PFM_SUCCESS;
}
pfmlib_pmu_t torrent_support = {
.pmu = PFM_PMU_TORRENT,
.name = "power_torrent",
.desc = "IBM Power Torrent PMU",
.pme_count = PME_TORRENT_EVENT_COUNT,
.pe = torrent_pe,
.max_encoding = 1,
.get_event_first = pfm_gen_powerpc_get_event_first,
.get_event_next = pfm_gen_powerpc_get_event_next,
.event_is_valid = pfm_gen_powerpc_event_is_valid,
.pmu_detect = pfm_torrent_detect,
.get_event_encoding[PFM_OS_NONE] = pfm_torrent_get_encoding,
PFMLIB_ENCODE_PERF(pfm_gen_powerpc_get_perf_encoding),
PFMLIB_VALID_PERF_PATTRS(pfm_gen_powerpc_perf_validate_pattrs),
.validate_table = pfm_torrent_validate_table,
.get_event_info = pfm_torrent_get_event_info,
.get_event_attr_info = pfm_torrent_get_event_attr_info,
};