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authorLuca Boccassi <luca.boccassi@gmail.com>2017-11-08 14:15:11 +0000
committerLuca Boccassi <luca.boccassi@gmail.com>2017-11-08 14:45:54 +0000
commit055c52583a2794da8ba1e85a48cce3832372b12f (patch)
tree8ceb1cb78fbb46a0f341f8ee24feb3c6b5540013 /lib/librte_power/rte_power_acpi_cpufreq.c
parentf239aed5e674965691846e8ce3f187dd47523689 (diff)
New upstream version 17.11-rc3
Change-Id: I6a5baa40612fe0c20f30b5fa773a6cbbac63a685 Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'lib/librte_power/rte_power_acpi_cpufreq.c')
-rw-r--r--lib/librte_power/rte_power_acpi_cpufreq.c111
1 files changed, 110 insertions, 1 deletions
diff --git a/lib/librte_power/rte_power_acpi_cpufreq.c b/lib/librte_power/rte_power_acpi_cpufreq.c
index a56c9b59..01ac5acb 100644
--- a/lib/librte_power/rte_power_acpi_cpufreq.c
+++ b/lib/librte_power/rte_power_acpi_cpufreq.c
@@ -87,6 +87,14 @@
#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,
@@ -105,6 +113,8 @@ struct rte_power_info {
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];
@@ -244,6 +254,18 @@ power_get_available_freqs(struct rte_power_info *pi)
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 frequencie(s) of lcore %u are available\n",
count, pi->lcore_id);
@@ -525,7 +547,17 @@ rte_power_acpi_cpufreq_freq_max(unsigned lcore_id)
}
/* Frequencies in the array are from high to low. */
- return set_freq_internal(&lcore_power_info[lcore_id], 0);
+ 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
@@ -543,3 +575,80 @@ rte_power_acpi_cpufreq_freq_min(unsigned 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;
+}