user/perfmon/pfmlib_intel_nhm_unc.c - akaros - Git at Google

 /*
  * pfmlib_intel_nhm_unc.c : Intel Nehalem/Westmere uncore PMU
  *
  * Copyright (c) 2008 Google, Inc
  * Contributed by Stephane Eranian <eranian@gmail.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 <ctype.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>

 /* private headers */
 #include "pfmlib_priv.h"
 #include "pfmlib_intel_x86_priv.h"

 #define NHM_UNC_ATTR_E	0
 #define NHM_UNC_ATTR_I	1
 #define NHM_UNC_ATTR_C	2
 #define NHM_UNC_ATTR_O	3

 #define _NHM_UNC_ATTR_I  (1 << NHM_UNC_ATTR_I)
 #define _NHM_UNC_ATTR_E  (1 << NHM_UNC_ATTR_E)
 #define _NHM_UNC_ATTR_C  (1 << NHM_UNC_ATTR_C)
 #define _NHM_UNC_ATTR_O  (1 << NHM_UNC_ATTR_O)

 #define NHM_UNC_ATTRS \
 	(_NHM_UNC_ATTR_I|_NHM_UNC_ATTR_E|_NHM_UNC_ATTR_C|_NHM_UNC_ATTR_O)

 #define NHM_UNC_MOD_OCC_BIT 	17
 #define NHM_UNC_MOD_EDGE_BIT	18
 #define NHM_UNC_MOD_INV_BIT	23
 #define NHM_UNC_MOD_CMASK_BIT	24

 #define NHM_UNC_MOD_OCC		(1 << NHM_UNC_MOD_OCC_BIT)
 #define NHM_UNC_MOD_EDGE	(1 << NHM_UNC_MOD_EDGE_BIT)
 #define NHM_UNC_MOD_INV		(1 << NHM_UNC_MOD_INV_BIT)

 /* Intel Nehalem/Westmere uncore event table */
 #include "events/intel_nhm_unc_events.h"
 #include "events/intel_wsm_unc_events.h"

 static const pfmlib_attr_desc_t nhm_unc_mods[]={
 	PFM_ATTR_B("e", "edge level"),				/* edge */
 	PFM_ATTR_B("i", "invert"),				/* invert */
 	PFM_ATTR_I("c", "counter-mask in range [0-255]"),	/* counter-mask */
 	PFM_ATTR_B("o", "queue occupancy"),			/* queue occupancy */
 	PFM_ATTR_NULL
 };

 static const int nhm_models[] = {
 	26,
 	30,
 	31,
 	0
 };

 static const int wsm_dp_models[] = {
 	44, /* Westmere-EP, Gulftown */
 	47, /* Westmere E7 */
 	0,
 };

 static int
 pfm_nhm_unc_get_encoding(void *this, pfmlib_event_desc_t *e)
 {
 	pfm_intel_x86_reg_t reg;
 	pfm_event_attr_info_t *a;
 	const intel_x86_entry_t *pe = this_pe(this);
 	unsigned int grpmsk, ugrpmsk = 0;
 	int umodmsk = 0, modmsk_r = 0;
 	uint64_t val;
 	uint64_t umask;
 	unsigned int modhw = 0;
 	int k, ret, grpid, last_grpid = -1;
 	int grpcounts[INTEL_X86_NUM_GRP];
 	int ncombo[INTEL_X86_NUM_GRP];
 	char umask_str[PFMLIB_EVT_MAX_NAME_LEN];

 	memset(grpcounts, 0, sizeof(grpcounts));
 	memset(ncombo, 0, sizeof(ncombo));

 	pe = this_pe(this);
 	umask_str[0] = e->fstr[0] = '\0';

 	reg.val = 0;

 	val = pe[e->event].code;

 	grpmsk = (1 << pe[e->event].ngrp)-1;
 	reg.val |= val; /* preset some filters from code */

 	/* take into account hardcoded umask */
 	umask = (val >> 8) & 0xff;

 	modmsk_r = pe[e->event].modmsk_req;

 	for(k=0; k < e->nattrs; k++) {
 		a = attr(e, k);

 		if (a->ctrl != PFM_ATTR_CTRL_PMU)
 			continue;

 		if (a->type == PFM_ATTR_UMASK) {
 			grpid = pe[e->event].umasks[a->idx].grpid;

 			/*
 			 * cfor certain events groups are meant to be
 			 * exclusive, i.e., only unit masks of one group
 			 * can be used
 			 */
 			if (last_grpid != -1 && grpid != last_grpid
 			    && intel_x86_eflag(this, e->event, INTEL_X86_GRP_EXCL)) {
 				DPRINT("exclusive unit mask group error\n");
 				return PFM_ERR_FEATCOMB;
 			}
 			/*
 			 * upper layer has removed duplicates
 			 * so if we come here more than once, it is for two
 			 * disinct umasks
 			 *
 			 * NCOMBO=no combination of unit masks within the same
 			 * umask group
 			 */
 			++grpcounts[grpid];

 			if (intel_x86_uflag(this, e->event, a->idx, INTEL_X86_NCOMBO))
 				ncombo[grpid] = 1;

 			if (grpcounts[grpid] > 1 && ncombo[grpid])  {
 				DPRINT("event does not support unit mask combination within a group\n");
 				return PFM_ERR_FEATCOMB;
 			}

 			evt_strcat(umask_str, ":%s", pe[e->event].umasks[a->idx].uname);

 			last_grpid = grpid;
 			modhw    |= pe[e->event].umasks[a->idx].modhw;
 			umask    |= pe[e->event].umasks[a->idx].ucode >> 8;
 			ugrpmsk  |= 1 << pe[e->event].umasks[a->idx].grpid;

 			reg.val |= umask << 8;

 			modmsk_r |= pe[e->event].umasks[a->idx].umodmsk_req;

 		} else if (a->type == PFM_ATTR_RAW_UMASK) {

 			/* there can only be one RAW_UMASK per event */

 			/* sanity check */
 			if (a->idx & ~0xff) {
 				DPRINT("raw umask is 8-bit wide\n");
 				return PFM_ERR_ATTR;
 			}
 			/* override umask */
 			umask = a->idx & 0xff;
 			ugrpmsk = grpmsk;
 		} else {
 			uint64_t ival = e->attrs[k].ival;
 			switch(a->idx) {
 				case NHM_UNC_ATTR_I: /* invert */
 					reg.nhm_unc.usel_inv = !!ival;
 					umodmsk |= _NHM_UNC_ATTR_I;
 					break;
 				case NHM_UNC_ATTR_E: /* edge */
 					reg.nhm_unc.usel_edge = !!ival;
 					umodmsk |= _NHM_UNC_ATTR_E;
 					break;
 				case NHM_UNC_ATTR_C: /* counter-mask */
 					/* already forced, cannot overwrite */
 					if (ival > 255)
 						return PFM_ERR_INVAL;
 					reg.nhm_unc.usel_cnt_mask = ival;
 					umodmsk |= _NHM_UNC_ATTR_C;
 					break;
 				case NHM_UNC_ATTR_O: /* occupancy */
 					reg.nhm_unc.usel_occ = !!ival;
 					umodmsk |= _NHM_UNC_ATTR_O;
 					break;
 			}
 		}
 	}

 	if ((modhw & _NHM_UNC_ATTR_I) && reg.nhm_unc.usel_inv)
 		return PFM_ERR_ATTR_SET;
 	if ((modhw & _NHM_UNC_ATTR_E) && reg.nhm_unc.usel_edge)
 		return PFM_ERR_ATTR_SET;
 	if ((modhw & _NHM_UNC_ATTR_C) && reg.nhm_unc.usel_cnt_mask)
 		return PFM_ERR_ATTR_SET;
 	if ((modhw & _NHM_UNC_ATTR_O) && reg.nhm_unc.usel_occ)
 		return PFM_ERR_ATTR_SET;

 	/*
 	 * check that there is at least of unit mask in each unit
 	 * mask group
 	 */
 	if ((ugrpmsk != grpmsk && !intel_x86_eflag(this, e->event, INTEL_X86_GRP_EXCL)) || ugrpmsk == 0) {
 		ugrpmsk ^= grpmsk;
 		ret = pfm_intel_x86_add_defaults(this, e, ugrpmsk, &umask, -1);
 		if (ret != PFM_SUCCESS)
 			return ret;
 	}

 	if (modmsk_r && (umodmsk ^ modmsk_r)) {
 		DPRINT("required modifiers missing: 0x%x\n", modmsk_r);
 		return PFM_ERR_ATTR;
 	}

 	evt_strcat(e->fstr, "%s", pe[e->event].name);
 	pfmlib_sort_attr(e);
 	for(k=0; k < e->nattrs; k++) {
 		a = attr(e, k);
 		if (a->ctrl != PFM_ATTR_CTRL_PMU)
 			continue;
 		if (a->type == PFM_ATTR_UMASK)
 			evt_strcat(e->fstr, ":%s", pe[e->event].umasks[a->idx].uname);
 		else if (a->type == PFM_ATTR_RAW_UMASK)
 			evt_strcat(e->fstr, ":0x%x", a->idx);
 	}

 	reg.val |= umask << 8;

 	reg.nhm_unc.usel_en    = 1; /* force enable bit to 1 */
 	reg.nhm_unc.usel_int   = 1; /* force APIC int to 1 */

 	e->codes[0] = reg.val;
 	e->count = 1;

 	for (k = 0; k < e->npattrs; k++) {
 		int idx;

 		if (e->pattrs[k].ctrl != PFM_ATTR_CTRL_PMU)
 			continue;

 		if (e->pattrs[k].type == PFM_ATTR_UMASK)
 			continue;

 		idx = e->pattrs[k].idx;
 		switch(idx) {
 		case NHM_UNC_ATTR_E:
 			evt_strcat(e->fstr, ":%s=%lu", nhm_unc_mods[idx].name, reg.nhm_unc.usel_edge);
 			break;
 		case NHM_UNC_ATTR_I:
 			evt_strcat(e->fstr, ":%s=%lu", nhm_unc_mods[idx].name, reg.nhm_unc.usel_inv);
 			break;
 		case NHM_UNC_ATTR_C:
 			evt_strcat(e->fstr, ":%s=%lu", nhm_unc_mods[idx].name, reg.nhm_unc.usel_cnt_mask);
 			break;
 		case NHM_UNC_ATTR_O:
 			evt_strcat(e->fstr, ":%s=%lu", nhm_unc_mods[idx].name, reg.nhm_unc.usel_occ);
 			break;
 		}
 	}
 	__pfm_vbprintf("[UNC_PERFEVTSEL=0x%"PRIx64" event=0x%x umask=0x%x en=%d int=%d inv=%d edge=%d occ=%d cnt_msk=%d] %s\n",
 		reg.val,
 		reg.nhm_unc.usel_event,
 		reg.nhm_unc.usel_umask,
 		reg.nhm_unc.usel_en,
 		reg.nhm_unc.usel_int,
 		reg.nhm_unc.usel_inv,
 		reg.nhm_unc.usel_edge,
 		reg.nhm_unc.usel_occ,
 		reg.nhm_unc.usel_cnt_mask,
 		pe[e->event].name);

 	return PFM_SUCCESS;
 }

 pfmlib_pmu_t intel_nhm_unc_support={
 	.desc			= "Intel Nehalem uncore",
 	.name			= "nhm_unc",
 	.perf_name		= "uncore",

 	.pmu			= PFM_PMU_INTEL_NHM_UNC,
 	.pme_count		= LIBPFM_ARRAY_SIZE(intel_nhm_unc_pe),
 	.type			= PFM_PMU_TYPE_UNCORE,
 	.num_cntrs		= 8,
 	.num_fixed_cntrs	= 1,
 	.max_encoding		= 1,
 	.pe			= intel_nhm_unc_pe,
 	.atdesc			= nhm_unc_mods,
 	.flags			= PFMLIB_PMU_FL_RAW_UMASK,

 	.cpu_family		= 6,
 	.cpu_models		= nhm_models,
 	.pmu_detect		= pfm_intel_x86_model_detect,

 	.get_event_encoding[PFM_OS_NONE] = pfm_nhm_unc_get_encoding,
 	 PFMLIB_ENCODE_PERF(pfm_intel_nhm_unc_get_perf_encoding),

 	.get_event_first	= pfm_intel_x86_get_event_first,
 	.get_event_next		= pfm_intel_x86_get_event_next,
 	.event_is_valid		= pfm_intel_x86_event_is_valid,
 	.validate_table		= pfm_intel_x86_validate_table,
 	.get_event_info		= pfm_intel_x86_get_event_info,
 	.get_event_attr_info	= pfm_intel_x86_get_event_attr_info,
 	PFMLIB_VALID_PERF_PATTRS(pfm_intel_x86_perf_validate_pattrs),
 	.get_event_nattrs	= pfm_intel_x86_get_event_nattrs,
 };

 pfmlib_pmu_t intel_wsm_unc_support={
 	.desc			= "Intel Westmere uncore",
 	.name			= "wsm_unc",
 	.perf_name		= "uncore",

 	.pmu			= PFM_PMU_INTEL_WSM_UNC,
 	.pme_count		= LIBPFM_ARRAY_SIZE(intel_wsm_unc_pe),
 	.type			= PFM_PMU_TYPE_UNCORE,
 	.num_cntrs		= 8,
 	.num_fixed_cntrs	= 1,
 	.max_encoding		= 1,
 	.pe			= intel_wsm_unc_pe,
 	.atdesc			= nhm_unc_mods,
 	.flags			= PFMLIB_PMU_FL_RAW_UMASK,

 	.cpu_family		= 6,
 	.cpu_models		= wsm_dp_models,
 	.pmu_detect		= pfm_intel_x86_model_detect,

 	.get_event_encoding[PFM_OS_NONE] = pfm_nhm_unc_get_encoding,
 	 PFMLIB_ENCODE_PERF(pfm_intel_nhm_unc_get_perf_encoding),

 	.get_event_first	= pfm_intel_x86_get_event_first,
 	.get_event_next		= pfm_intel_x86_get_event_next,
 	.event_is_valid		= pfm_intel_x86_event_is_valid,
 	.validate_table		= pfm_intel_x86_validate_table,
 	.get_event_info		= pfm_intel_x86_get_event_info,
 	.get_event_attr_info	= pfm_intel_x86_get_event_attr_info,
 	PFMLIB_VALID_PERF_PATTRS(pfm_intel_x86_perf_validate_pattrs),
 	.get_event_nattrs	= pfm_intel_x86_get_event_nattrs,
 };
	/*
	* pfmlib_intel_nhm_unc.c : Intel Nehalem/Westmere uncore PMU
	*
	* Copyright (c) 2008 Google, Inc
	* Contributed by Stephane Eranian <eranian@gmail.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 <ctype.h>
	#include <string.h>
	#include <stdlib.h>
	#include <stdio.h>

	/* private headers */
	#include "pfmlib_priv.h"
	#include "pfmlib_intel_x86_priv.h"

	#define NHM_UNC_ATTR_E 0
	#define NHM_UNC_ATTR_I 1
	#define NHM_UNC_ATTR_C 2
	#define NHM_UNC_ATTR_O 3

	#define _NHM_UNC_ATTR_I (1 << NHM_UNC_ATTR_I)
	#define _NHM_UNC_ATTR_E (1 << NHM_UNC_ATTR_E)
	#define _NHM_UNC_ATTR_C (1 << NHM_UNC_ATTR_C)
	#define _NHM_UNC_ATTR_O (1 << NHM_UNC_ATTR_O)

	#define NHM_UNC_ATTRS \
	(_NHM_UNC_ATTR_I\|_NHM_UNC_ATTR_E\|_NHM_UNC_ATTR_C\|_NHM_UNC_ATTR_O)

	#define NHM_UNC_MOD_OCC_BIT 17
	#define NHM_UNC_MOD_EDGE_BIT 18
	#define NHM_UNC_MOD_INV_BIT 23
	#define NHM_UNC_MOD_CMASK_BIT 24

	#define NHM_UNC_MOD_OCC (1 << NHM_UNC_MOD_OCC_BIT)
	#define NHM_UNC_MOD_EDGE (1 << NHM_UNC_MOD_EDGE_BIT)
	#define NHM_UNC_MOD_INV (1 << NHM_UNC_MOD_INV_BIT)

	/* Intel Nehalem/Westmere uncore event table */
	#include "events/intel_nhm_unc_events.h"
	#include "events/intel_wsm_unc_events.h"

	static const pfmlib_attr_desc_t nhm_unc_mods[]={
	PFM_ATTR_B("e", "edge level"), /* edge */
	PFM_ATTR_B("i", "invert"), /* invert */
	PFM_ATTR_I("c", "counter-mask in range [0-255]"), /* counter-mask */
	PFM_ATTR_B("o", "queue occupancy"), /* queue occupancy */
	PFM_ATTR_NULL
	};

	static const int nhm_models[] = {
	26,
	30,
	31,
	0
	};

	static const int wsm_dp_models[] = {
	44, /* Westmere-EP, Gulftown */
	47, /* Westmere E7 */
	0,
	};

	static int
	pfm_nhm_unc_get_encoding(void this, pfmlib_event_desc_t e)
	{
	pfm_intel_x86_reg_t reg;
	pfm_event_attr_info_t *a;
	const intel_x86_entry_t *pe = this_pe(this);
	unsigned int grpmsk, ugrpmsk = 0;
	int umodmsk = 0, modmsk_r = 0;
	uint64_t val;
	uint64_t umask;
	unsigned int modhw = 0;
	int k, ret, grpid, last_grpid = -1;
	int grpcounts[INTEL_X86_NUM_GRP];
	int ncombo[INTEL_X86_NUM_GRP];
	char umask_str[PFMLIB_EVT_MAX_NAME_LEN];

	memset(grpcounts, 0, sizeof(grpcounts));
	memset(ncombo, 0, sizeof(ncombo));

	pe = this_pe(this);
	umask_str[0] = e->fstr[0] = '\0';

	reg.val = 0;

	val = pe[e->event].code;

	grpmsk = (1 << pe[e->event].ngrp)-1;
	reg.val \|= val; /* preset some filters from code */

	/* take into account hardcoded umask */
	umask = (val >> 8) & 0xff;

	modmsk_r = pe[e->event].modmsk_req;

	for(k=0; k < e->nattrs; k++) {
	a = attr(e, k);

	if (a->ctrl != PFM_ATTR_CTRL_PMU)
	continue;

	if (a->type == PFM_ATTR_UMASK) {
	grpid = pe[e->event].umasks[a->idx].grpid;

	/*
	* cfor certain events groups are meant to be
	* exclusive, i.e., only unit masks of one group
	* can be used
	*/
	if (last_grpid != -1 && grpid != last_grpid
	&& intel_x86_eflag(this, e->event, INTEL_X86_GRP_EXCL)) {
	DPRINT("exclusive unit mask group error\n");
	return PFM_ERR_FEATCOMB;
	}
	/*
	* upper layer has removed duplicates
	* so if we come here more than once, it is for two
	* disinct umasks
	*
	* NCOMBO=no combination of unit masks within the same
	* umask group
	*/
	++grpcounts[grpid];

	if (intel_x86_uflag(this, e->event, a->idx, INTEL_X86_NCOMBO))
	ncombo[grpid] = 1;

	if (grpcounts[grpid] > 1 && ncombo[grpid]) {
	DPRINT("event does not support unit mask combination within a group\n");
	return PFM_ERR_FEATCOMB;
	}

	evt_strcat(umask_str, ":%s", pe[e->event].umasks[a->idx].uname);

	last_grpid = grpid;
	modhw \|= pe[e->event].umasks[a->idx].modhw;
	umask \|= pe[e->event].umasks[a->idx].ucode >> 8;
	ugrpmsk \|= 1 << pe[e->event].umasks[a->idx].grpid;

	reg.val \|= umask << 8;

	modmsk_r \|= pe[e->event].umasks[a->idx].umodmsk_req;

	} else if (a->type == PFM_ATTR_RAW_UMASK) {

	/* there can only be one RAW_UMASK per event */

	/* sanity check */
	if (a->idx & ~0xff) {
	DPRINT("raw umask is 8-bit wide\n");
	return PFM_ERR_ATTR;
	}
	/* override umask */
	umask = a->idx & 0xff;
	ugrpmsk = grpmsk;
	} else {
	uint64_t ival = e->attrs[k].ival;
	switch(a->idx) {
	case NHM_UNC_ATTR_I: /* invert */
	reg.nhm_unc.usel_inv = !!ival;
	umodmsk \|= _NHM_UNC_ATTR_I;
	break;
	case NHM_UNC_ATTR_E: /* edge */
	reg.nhm_unc.usel_edge = !!ival;
	umodmsk \|= _NHM_UNC_ATTR_E;
	break;
	case NHM_UNC_ATTR_C: /* counter-mask */
	/* already forced, cannot overwrite */
	if (ival > 255)
	return PFM_ERR_INVAL;
	reg.nhm_unc.usel_cnt_mask = ival;
	umodmsk \|= _NHM_UNC_ATTR_C;
	break;
	case NHM_UNC_ATTR_O: /* occupancy */
	reg.nhm_unc.usel_occ = !!ival;
	umodmsk \|= _NHM_UNC_ATTR_O;
	break;
	}
	}
	}

	if ((modhw & _NHM_UNC_ATTR_I) && reg.nhm_unc.usel_inv)
	return PFM_ERR_ATTR_SET;
	if ((modhw & _NHM_UNC_ATTR_E) && reg.nhm_unc.usel_edge)
	return PFM_ERR_ATTR_SET;
	if ((modhw & _NHM_UNC_ATTR_C) && reg.nhm_unc.usel_cnt_mask)
	return PFM_ERR_ATTR_SET;
	if ((modhw & _NHM_UNC_ATTR_O) && reg.nhm_unc.usel_occ)
	return PFM_ERR_ATTR_SET;

	/*
	* check that there is at least of unit mask in each unit
	* mask group
	*/
	if ((ugrpmsk != grpmsk && !intel_x86_eflag(this, e->event, INTEL_X86_GRP_EXCL)) \|\| ugrpmsk == 0) {
	ugrpmsk ^= grpmsk;
	ret = pfm_intel_x86_add_defaults(this, e, ugrpmsk, &umask, -1);
	if (ret != PFM_SUCCESS)
	return ret;
	}

	if (modmsk_r && (umodmsk ^ modmsk_r)) {
	DPRINT("required modifiers missing: 0x%x\n", modmsk_r);
	return PFM_ERR_ATTR;
	}

	evt_strcat(e->fstr, "%s", pe[e->event].name);
	pfmlib_sort_attr(e);
	for(k=0; k < e->nattrs; k++) {
	a = attr(e, k);
	if (a->ctrl != PFM_ATTR_CTRL_PMU)
	continue;
	if (a->type == PFM_ATTR_UMASK)
	evt_strcat(e->fstr, ":%s", pe[e->event].umasks[a->idx].uname);
	else if (a->type == PFM_ATTR_RAW_UMASK)
	evt_strcat(e->fstr, ":0x%x", a->idx);
	}

	reg.val \|= umask << 8;

	reg.nhm_unc.usel_en = 1; /* force enable bit to 1 */
	reg.nhm_unc.usel_int = 1; /* force APIC int to 1 */

	e->codes[0] = reg.val;
	e->count = 1;

	for (k = 0; k < e->npattrs; k++) {
	int idx;

	if (e->pattrs[k].ctrl != PFM_ATTR_CTRL_PMU)
	continue;

	if (e->pattrs[k].type == PFM_ATTR_UMASK)
	continue;

	idx = e->pattrs[k].idx;
	switch(idx) {
	case NHM_UNC_ATTR_E:
	evt_strcat(e->fstr, ":%s=%lu", nhm_unc_mods[idx].name, reg.nhm_unc.usel_edge);
	break;
	case NHM_UNC_ATTR_I:
	evt_strcat(e->fstr, ":%s=%lu", nhm_unc_mods[idx].name, reg.nhm_unc.usel_inv);
	break;
	case NHM_UNC_ATTR_C:
	evt_strcat(e->fstr, ":%s=%lu", nhm_unc_mods[idx].name, reg.nhm_unc.usel_cnt_mask);
	break;
	case NHM_UNC_ATTR_O:
	evt_strcat(e->fstr, ":%s=%lu", nhm_unc_mods[idx].name, reg.nhm_unc.usel_occ);
	break;
	}
	}
	__pfm_vbprintf("[UNC_PERFEVTSEL=0x%"PRIx64" event=0x%x umask=0x%x en=%d int=%d inv=%d edge=%d occ=%d cnt_msk=%d] %s\n",
	reg.val,
	reg.nhm_unc.usel_event,
	reg.nhm_unc.usel_umask,
	reg.nhm_unc.usel_en,
	reg.nhm_unc.usel_int,
	reg.nhm_unc.usel_inv,
	reg.nhm_unc.usel_edge,
	reg.nhm_unc.usel_occ,
	reg.nhm_unc.usel_cnt_mask,
	pe[e->event].name);

	return PFM_SUCCESS;
	}

	pfmlib_pmu_t intel_nhm_unc_support={
	.desc = "Intel Nehalem uncore",
	.name = "nhm_unc",
	.perf_name = "uncore",

	.pmu = PFM_PMU_INTEL_NHM_UNC,
	.pme_count = LIBPFM_ARRAY_SIZE(intel_nhm_unc_pe),
	.type = PFM_PMU_TYPE_UNCORE,
	.num_cntrs = 8,
	.num_fixed_cntrs = 1,
	.max_encoding = 1,
	.pe = intel_nhm_unc_pe,
	.atdesc = nhm_unc_mods,
	.flags = PFMLIB_PMU_FL_RAW_UMASK,

	.cpu_family = 6,
	.cpu_models = nhm_models,
	.pmu_detect = pfm_intel_x86_model_detect,

	.get_event_encoding[PFM_OS_NONE] = pfm_nhm_unc_get_encoding,
	PFMLIB_ENCODE_PERF(pfm_intel_nhm_unc_get_perf_encoding),

	.get_event_first = pfm_intel_x86_get_event_first,
	.get_event_next = pfm_intel_x86_get_event_next,
	.event_is_valid = pfm_intel_x86_event_is_valid,
	.validate_table = pfm_intel_x86_validate_table,
	.get_event_info = pfm_intel_x86_get_event_info,
	.get_event_attr_info = pfm_intel_x86_get_event_attr_info,
	PFMLIB_VALID_PERF_PATTRS(pfm_intel_x86_perf_validate_pattrs),
	.get_event_nattrs = pfm_intel_x86_get_event_nattrs,
	};

	pfmlib_pmu_t intel_wsm_unc_support={
	.desc = "Intel Westmere uncore",
	.name = "wsm_unc",
	.perf_name = "uncore",

	.pmu = PFM_PMU_INTEL_WSM_UNC,
	.pme_count = LIBPFM_ARRAY_SIZE(intel_wsm_unc_pe),
	.type = PFM_PMU_TYPE_UNCORE,
	.num_cntrs = 8,
	.num_fixed_cntrs = 1,
	.max_encoding = 1,
	.pe = intel_wsm_unc_pe,
	.atdesc = nhm_unc_mods,
	.flags = PFMLIB_PMU_FL_RAW_UMASK,

	.cpu_family = 6,
	.cpu_models = wsm_dp_models,
	.pmu_detect = pfm_intel_x86_model_detect,

	.get_event_encoding[PFM_OS_NONE] = pfm_nhm_unc_get_encoding,
	PFMLIB_ENCODE_PERF(pfm_intel_nhm_unc_get_perf_encoding),

	.get_event_first = pfm_intel_x86_get_event_first,
	.get_event_next = pfm_intel_x86_get_event_next,
	.event_is_valid = pfm_intel_x86_event_is_valid,
	.validate_table = pfm_intel_x86_validate_table,
	.get_event_info = pfm_intel_x86_get_event_info,
	.get_event_attr_info = pfm_intel_x86_get_event_attr_info,
	PFMLIB_VALID_PERF_PATTRS(pfm_intel_x86_perf_validate_pattrs),
	.get_event_nattrs = pfm_intel_x86_get_event_nattrs,
	};