New upstream version 18.02upstream/18.02

Change-Id: I89ed24cb2a49b78fe5be6970b99dd46c1499fcc3
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 0 insertions, 654 deletions

diff --git a/lib/librte_power/rte_power_acpi_cpufreq.c b/lib/librte_power/rte_power_acpi_cpufreq.c
deleted file mode 100644
index 6b0cdb2e..00000000
--- a/lib/librte_power/rte_power_acpi_cpufreq.c
+++ /dev/null
@@ -1,654 +0,0 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <signal.h>
-#include <limits.h>
-
-#include <rte_memcpy.h>
-#include <rte_atomic.h>
-
-#include "rte_power_acpi_cpufreq.h"
-#include "rte_power_common.h"
-
-#ifdef RTE_LIBRTE_POWER_DEBUG
-#define POWER_DEBUG_TRACE(fmt, args...) do { \
-		RTE_LOG(ERR, POWER, "%s: " fmt, __func__, ## args); \
-} while (0)
-#else
-#define POWER_DEBUG_TRACE(fmt, args...)
-#endif
-
-#define FOPEN_OR_ERR_RET(f, retval) do { \
-		if ((f) == NULL) { \
-			RTE_LOG(ERR, POWER, "File not openned\n"); \
-			return retval; \
-		} \
-} while (0)
-
-#define FOPS_OR_NULL_GOTO(ret, label) do { \
-		if ((ret) == NULL) { \
-			RTE_LOG(ERR, POWER, "fgets returns nothing\n"); \
-			goto label; \
-		} \
-} while (0)
-
-#define FOPS_OR_ERR_GOTO(ret, label) do { \
-		if ((ret) < 0) { \
-			RTE_LOG(ERR, POWER, "File operations failed\n"); \
-			goto label; \
-		} \
-} while (0)
-
-#define STR_SIZE     1024
-#define POWER_CONVERT_TO_DECIMAL 10
-
-#define POWER_GOVERNOR_USERSPACE "userspace"
-#define POWER_SYSFILE_GOVERNOR   \
-		"/sys/devices/system/cpu/cpu%u/cpufreq/scaling_governor"
-#define POWER_SYSFILE_AVAIL_FREQ \
-		"/sys/devices/system/cpu/cpu%u/cpufreq/scaling_available_frequencies"
-#define POWER_SYSFILE_SETSPEED   \
-		"/sys/devices/system/cpu/cpu%u/cpufreq/scaling_setspeed"
-
-/*
- * MSR related
- */
-#define PLATFORM_INFO     0x0CE
-#define TURBO_RATIO_LIMIT 0x1AD
-#define IA32_PERF_CTL     0x199
-#define CORE_TURBO_DISABLE_BIT ((uint64_t)1<<32)
-
-enum power_state {
-	POWER_IDLE = 0,
-	POWER_ONGOING,
-	POWER_USED,
-	POWER_UNKNOWN
-};
-
-/**
- * Power info per lcore.
- */
-struct rte_power_info {
-	unsigned lcore_id;                   /**< Logical core id */
-	uint32_t freqs[RTE_MAX_LCORE_FREQS]; /**< Frequency array */
-	uint32_t nb_freqs;                   /**< number of available freqs */
-	FILE *f;                             /**< FD of scaling_setspeed */
-	char governor_ori[32];               /**< Original governor name */
-	uint32_t curr_idx;                   /**< Freq index in freqs array */
-	volatile uint32_t state;             /**< Power in use state */
-	uint16_t turbo_available;            /**< Turbo Boost available */
-	uint16_t turbo_enable;               /**< Turbo Boost enable/disable */
-} __rte_cache_aligned;
-
-static struct rte_power_info lcore_power_info[RTE_MAX_LCORE];
-
-/**
- * It is to set specific freq for specific logical core, according to the index
- * of supported frequencies.
- */
-static int
-set_freq_internal(struct rte_power_info *pi, uint32_t idx)
-{
-	if (idx >= RTE_MAX_LCORE_FREQS || idx >= pi->nb_freqs) {
-		RTE_LOG(ERR, POWER, "Invalid frequency index %u, which "
-				"should be less than %u\n", idx, pi->nb_freqs);
-		return -1;
-	}
-
-	/* Check if it is the same as current */
-	if (idx == pi->curr_idx)
-		return 0;
-
-	POWER_DEBUG_TRACE("Freqency[%u] %u to be set for lcore %u\n",
-			idx, pi->freqs[idx], pi->lcore_id);
-	if (fseek(pi->f, 0, SEEK_SET) < 0) {
-		RTE_LOG(ERR, POWER, "Fail to set file position indicator to 0 "
-				"for setting frequency for lcore %u\n", pi->lcore_id);
-		return -1;
-	}
-	if (fprintf(pi->f, "%u", pi->freqs[idx]) < 0) {
-		RTE_LOG(ERR, POWER, "Fail to write new frequency for "
-				"lcore %u\n", pi->lcore_id);
-		return -1;
-	}
-	fflush(pi->f);
-	pi->curr_idx = idx;
-
-	return 1;
-}
-
-/**
- * It is to check the current scaling governor by reading sys file, and then
- * set it into 'userspace' if it is not by writing the sys file. The original
- * governor will be saved for rolling back.
- */
-static int
-power_set_governor_userspace(struct rte_power_info *pi)
-{
-	FILE *f;
-	int ret = -1;
-	char buf[BUFSIZ];
-	char fullpath[PATH_MAX];
-	char *s;
-	int val;
-
-	snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_GOVERNOR,
-			pi->lcore_id);
-	f = fopen(fullpath, "rw+");
-	FOPEN_OR_ERR_RET(f, ret);
-
-	s = fgets(buf, sizeof(buf), f);
-	FOPS_OR_NULL_GOTO(s, out);
-
-	/* Check if current governor is userspace */
-	if (strncmp(buf, POWER_GOVERNOR_USERSPACE,
-			sizeof(POWER_GOVERNOR_USERSPACE)) == 0) {
-		ret = 0;
-		POWER_DEBUG_TRACE("Power management governor of lcore %u is "
-				"already userspace\n", pi->lcore_id);
-		goto out;
-	}
-	/* Save the original governor */
-	snprintf(pi->governor_ori, sizeof(pi->governor_ori), "%s", buf);
-
-	/* Write 'userspace' to the governor */
-	val = fseek(f, 0, SEEK_SET);
-	FOPS_OR_ERR_GOTO(val, out);
-
-	val = fputs(POWER_GOVERNOR_USERSPACE, f);
-	FOPS_OR_ERR_GOTO(val, out);
-
-	ret = 0;
-	RTE_LOG(INFO, POWER, "Power management governor of lcore %u has been "
-			"set to user space successfully\n", pi->lcore_id);
-out:
-	fclose(f);
-
-	return ret;
-}
-
-/**
- * It is to get the available frequencies of the specific lcore by reading the
- * sys file.
- */
-static int
-power_get_available_freqs(struct rte_power_info *pi)
-{
-	FILE *f;
-	int ret = -1, i, count;
-	char *p;
-	char buf[BUFSIZ];
-	char fullpath[PATH_MAX];
-	char *freqs[RTE_MAX_LCORE_FREQS];
-	char *s;
-
-	snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_AVAIL_FREQ,
-			pi->lcore_id);
-	f = fopen(fullpath, "r");
-	FOPEN_OR_ERR_RET(f, ret);
-
-	s = fgets(buf, sizeof(buf), f);
-	FOPS_OR_NULL_GOTO(s, out);
-
-	/* Strip the line break if there is */
-	p = strchr(buf, '\n');
-	if (p != NULL)
-		*p = 0;
-
-	/* Split string into at most RTE_MAX_LCORE_FREQS frequencies */
-	count = rte_strsplit(buf, sizeof(buf), freqs,
-			RTE_MAX_LCORE_FREQS, ' ');
-	if (count <= 0) {
-		RTE_LOG(ERR, POWER, "No available frequency in "
-				""POWER_SYSFILE_AVAIL_FREQ"\n", pi->lcore_id);
-		goto out;
-	}
-	if (count >= RTE_MAX_LCORE_FREQS) {
-		RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n",
-				count);
-		goto out;
-	}
-
-	/* Store the available frequncies into power context */
-	for (i = 0, pi->nb_freqs = 0; i < count; i++) {
-		POWER_DEBUG_TRACE("Lcore %u frequency[%d]: %s\n", pi->lcore_id,
-				i, freqs[i]);
-		pi->freqs[pi->nb_freqs++] = strtoul(freqs[i], &p,
-				POWER_CONVERT_TO_DECIMAL);
-	}
-
-	if ((pi->freqs[0]-1000) == pi->freqs[1]) {
-		pi->turbo_available = 1;
-		pi->turbo_enable = 1;
-		POWER_DEBUG_TRACE("Lcore %u Can do Turbo Boost\n",
-				pi->lcore_id);
-	} else {
-		pi->turbo_available = 0;
-		pi->turbo_enable = 0;
-		POWER_DEBUG_TRACE("Turbo Boost not available on Lcore %u\n",
-				pi->lcore_id);
-	}
-
-	ret = 0;
-	POWER_DEBUG_TRACE("%d frequency(s) of lcore %u are available\n",
-			count, pi->lcore_id);
-out:
-	fclose(f);
-
-	return ret;
-}
-
-/**
- * It is to fopen the sys file for the future setting the lcore frequency.
- */
-static int
-power_init_for_setting_freq(struct rte_power_info *pi)
-{
-	FILE *f;
-	char fullpath[PATH_MAX];
-	char buf[BUFSIZ];
-	uint32_t i, freq;
-	char *s;
-
-	snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_SETSPEED,
-			pi->lcore_id);
-	f = fopen(fullpath, "rw+");
-	FOPEN_OR_ERR_RET(f, -1);
-
-	s = fgets(buf, sizeof(buf), f);
-	FOPS_OR_NULL_GOTO(s, out);
-
-	freq = strtoul(buf, NULL, POWER_CONVERT_TO_DECIMAL);
-	for (i = 0; i < pi->nb_freqs; i++) {
-		if (freq == pi->freqs[i]) {
-			pi->curr_idx = i;
-			pi->f = f;
-			return 0;
-		}
-	}
-
-out:
-	fclose(f);
-
-	return -1;
-}
-
-int
-rte_power_acpi_cpufreq_init(unsigned lcore_id)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Lcore id %u can not exceeds %u\n",
-				lcore_id, RTE_MAX_LCORE - 1U);
-		return -1;
-	}
-
-	pi = &lcore_power_info[lcore_id];
-	if (rte_atomic32_cmpset(&(pi->state), POWER_IDLE, POWER_ONGOING)
-			== 0) {
-		RTE_LOG(INFO, POWER, "Power management of lcore %u is "
-				"in use\n", lcore_id);
-		return -1;
-	}
-
-	pi->lcore_id = lcore_id;
-	/* Check and set the governor */
-	if (power_set_governor_userspace(pi) < 0) {
-		RTE_LOG(ERR, POWER, "Cannot set governor of lcore %u to "
-				"userspace\n", lcore_id);
-		goto fail;
-	}
-
-	/* Get the available frequencies */
-	if (power_get_available_freqs(pi) < 0) {
-		RTE_LOG(ERR, POWER, "Cannot get available frequencies of "
-				"lcore %u\n", lcore_id);
-		goto fail;
-	}
-
-	/* Init for setting lcore frequency */
-	if (power_init_for_setting_freq(pi) < 0) {
-		RTE_LOG(ERR, POWER, "Cannot init for setting frequency for "
-				"lcore %u\n", lcore_id);
-		goto fail;
-	}
-
-	/* Set freq to max by default */
-	if (rte_power_acpi_cpufreq_freq_max(lcore_id) < 0) {
-		RTE_LOG(ERR, POWER, "Cannot set frequency of lcore %u "
-				"to max\n", lcore_id);
-		goto fail;
-	}
-
-	RTE_LOG(INFO, POWER, "Initialized successfully for lcore %u "
-			"power management\n", lcore_id);
-	rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_USED);
-
-	return 0;
-
-fail:
-	rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_UNKNOWN);
-
-	return -1;
-}
-
-/**
- * It is to check the governor and then set the original governor back if
- * needed by writing the the sys file.
- */
-static int
-power_set_governor_original(struct rte_power_info *pi)
-{
-	FILE *f;
-	int ret = -1;
-	char buf[BUFSIZ];
-	char fullpath[PATH_MAX];
-	char *s;
-	int val;
-
-	snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_GOVERNOR,
-			pi->lcore_id);
-	f = fopen(fullpath, "rw+");
-	FOPEN_OR_ERR_RET(f, ret);
-
-	s = fgets(buf, sizeof(buf), f);
-	FOPS_OR_NULL_GOTO(s, out);
-
-	/* Check if the governor to be set is the same as current */
-	if (strncmp(buf, pi->governor_ori, sizeof(pi->governor_ori)) == 0) {
-		ret = 0;
-		POWER_DEBUG_TRACE("Power management governor of lcore %u "
-				"has already been set to %s\n",
-				pi->lcore_id, pi->governor_ori);
-		goto out;
-	}
-
-	/* Write back the original governor */
-	val = fseek(f, 0, SEEK_SET);
-	FOPS_OR_ERR_GOTO(val, out);
-
-	val = fputs(pi->governor_ori, f);
-	FOPS_OR_ERR_GOTO(val, out);
-
-	ret = 0;
-	RTE_LOG(INFO, POWER, "Power management governor of lcore %u "
-			"has been set back to %s successfully\n",
-			pi->lcore_id, pi->governor_ori);
-out:
-	fclose(f);
-
-	return ret;
-}
-
-int
-rte_power_acpi_cpufreq_exit(unsigned lcore_id)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Lcore id %u can not exceeds %u\n",
-				lcore_id, RTE_MAX_LCORE - 1U);
-		return -1;
-	}
-	pi = &lcore_power_info[lcore_id];
-	if (rte_atomic32_cmpset(&(pi->state), POWER_USED, POWER_ONGOING)
-			== 0) {
-		RTE_LOG(INFO, POWER, "Power management of lcore %u is "
-				"not used\n", lcore_id);
-		return -1;
-	}
-
-	/* Close FD of setting freq */
-	fclose(pi->f);
-	pi->f = NULL;
-
-	/* Set the governor back to the original */
-	if (power_set_governor_original(pi) < 0) {
-		RTE_LOG(ERR, POWER, "Cannot set the governor of %u back "
-				"to the original\n", lcore_id);
-		goto fail;
-	}
-
-	RTE_LOG(INFO, POWER, "Power management of lcore %u has exited from "
-			"'userspace' mode and been set back to the "
-			"original\n", lcore_id);
-	rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_IDLE);
-
-	return 0;
-
-fail:
-	rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_UNKNOWN);
-
-	return -1;
-}
-
-uint32_t
-rte_power_acpi_cpufreq_freqs(unsigned lcore_id, uint32_t *freqs, uint32_t num)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE || !freqs) {
-		RTE_LOG(ERR, POWER, "Invalid input parameter\n");
-		return 0;
-	}
-
-	pi = &lcore_power_info[lcore_id];
-	if (num < pi->nb_freqs) {
-		RTE_LOG(ERR, POWER, "Buffer size is not enough\n");
-		return 0;
-	}
-	rte_memcpy(freqs, pi->freqs, pi->nb_freqs * sizeof(uint32_t));
-
-	return pi->nb_freqs;
-}
-
-uint32_t
-rte_power_acpi_cpufreq_get_freq(unsigned lcore_id)
-{
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return RTE_POWER_INVALID_FREQ_INDEX;
-	}
-
-	return lcore_power_info[lcore_id].curr_idx;
-}
-
-int
-rte_power_acpi_cpufreq_set_freq(unsigned lcore_id, uint32_t index)
-{
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
-	}
-
-	return set_freq_internal(&(lcore_power_info[lcore_id]), index);
-}
-
-int
-rte_power_acpi_cpufreq_freq_down(unsigned lcore_id)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
-	}
-
-	pi = &lcore_power_info[lcore_id];
-	if (pi->curr_idx + 1 == pi->nb_freqs)
-		return 0;
-
-	/* Frequencies in the array are from high to low. */
-	return set_freq_internal(pi, pi->curr_idx + 1);
-}
-
-int
-rte_power_acpi_cpufreq_freq_up(unsigned lcore_id)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
-	}
-
-	pi = &lcore_power_info[lcore_id];
-	if (pi->curr_idx == 0)
-		return 0;
-
-	/* Frequencies in the array are from high to low. */
-	return set_freq_internal(pi, pi->curr_idx - 1);
-}
-
-int
-rte_power_acpi_cpufreq_freq_max(unsigned lcore_id)
-{
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
-	}
-
-	/* Frequencies in the array are from high to low. */
-	if (lcore_power_info[lcore_id].turbo_available) {
-		if (lcore_power_info[lcore_id].turbo_enable)
-			/* Set to Turbo */
-			return set_freq_internal(
-					&lcore_power_info[lcore_id], 0);
-		else
-			/* Set to max non-turbo */
-			return set_freq_internal(
-					&lcore_power_info[lcore_id], 1);
-	} else
-		return set_freq_internal(&lcore_power_info[lcore_id], 0);
-}
-
-int
-rte_power_acpi_cpufreq_freq_min(unsigned lcore_id)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
-	}
-
-	pi = &lcore_power_info[lcore_id];
-
-	/* Frequencies in the array are from high to low. */
-	return set_freq_internal(pi, pi->nb_freqs - 1);
-}
-
-
-int
-rte_power_acpi_turbo_status(unsigned int lcore_id)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
-	}
-
-	pi = &lcore_power_info[lcore_id];
-
-	return pi->turbo_enable;
-}
-
-
-int
-rte_power_acpi_enable_turbo(unsigned int lcore_id)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
-	}
-
-	pi = &lcore_power_info[lcore_id];
-
-	if (pi->turbo_available)
-		pi->turbo_enable = 1;
-	else {
-		pi->turbo_enable = 0;
-		RTE_LOG(ERR, POWER,
-			"Failed to enable turbo on lcore %u\n",
-			lcore_id);
-			return -1;
-	}
-
-	/* Max may have changed, so call to max function */
-	if (rte_power_acpi_cpufreq_freq_max(lcore_id) < 0) {
-		RTE_LOG(ERR, POWER,
-			"Failed to set frequency of lcore %u to max\n",
-			lcore_id);
-			return -1;
-	}
-
-	return 0;
-}
-
-int
-rte_power_acpi_disable_turbo(unsigned int lcore_id)
-{
-	struct rte_power_info *pi;
-
-	if (lcore_id >= RTE_MAX_LCORE) {
-		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-		return -1;
-	}
-
-	pi = &lcore_power_info[lcore_id];
-
-	 pi->turbo_enable = 0;
-
-	if ((pi->turbo_available) && (pi->curr_idx <= 1)) {
-		/* Try to set freq to max by default coming out of turbo */
-		if (rte_power_acpi_cpufreq_freq_max(lcore_id) < 0) {
-			RTE_LOG(ERR, POWER,
-				"Failed to set frequency of lcore %u to max\n",
-				lcore_id);
-			return -1;
-		}
-	}
-
-	return 0;
-}