X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_power%2Fpower_acpi_cpufreq.c;h=583815a07e9fe75c0053d2551206232895f91f42;hb=ec0b862d5e52db12932c3125d06081307aea6af4;hp=bce933e9203906dc3f86b1b4c77decafe211993a;hpb=d69dc8476dcb1a517505b8b505494c8c5e3cc881;p=dpdk.git

diff --git a/lib/librte_power/power_acpi_cpufreq.c b/lib/librte_power/power_acpi_cpufreq.c
index bce933e920..583815a07e 100644
--- a/lib/librte_power/power_acpi_cpufreq.c
+++ b/lib/librte_power/power_acpi_cpufreq.c
@@ -12,8 +12,10 @@
 #include <signal.h>
 #include <limits.h>
 
-#include <rte_memcpy.h>
 #include <rte_atomic.h>
+#include <rte_memcpy.h>
+#include <rte_memory.h>
+#include <rte_string_fns.h>
 
 #include "power_acpi_cpufreq.h"
 #include "power_common.h"
@@ -28,7 +30,7 @@
 
 #define FOPEN_OR_ERR_RET(f, retval) do { \
 		if ((f) == NULL) { \
-			RTE_LOG(ERR, POWER, "File not openned\n"); \
+			RTE_LOG(ERR, POWER, "File not opened\n"); \
 			return retval; \
 		} \
 } while (0)
@@ -57,6 +59,7 @@
 		"/sys/devices/system/cpu/cpu%u/cpufreq/scaling_available_frequencies"
 #define POWER_SYSFILE_SETSPEED   \
 		"/sys/devices/system/cpu/cpu%u/cpufreq/scaling_setspeed"
+#define POWER_ACPI_DRIVER "acpi-cpufreq"
 
 /*
  * MSR related
@@ -107,7 +110,7 @@ set_freq_internal(struct rte_power_info *pi, uint32_t idx)
 	if (idx == pi->curr_idx)
 		return 0;
 
-	POWER_DEBUG_TRACE("Freqency[%u] %u to be set for lcore %u\n",
+	POWER_DEBUG_TRACE("Frequency[%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 "
@@ -147,6 +150,8 @@ power_set_governor_userspace(struct rte_power_info *pi)
 
 	s = fgets(buf, sizeof(buf), f);
 	FOPS_OR_NULL_GOTO(s, out);
+	/* Strip off terminating '\n' */
+	strtok(buf, "\n");
 
 	/* Check if current governor is userspace */
 	if (strncmp(buf, POWER_GOVERNOR_USERSPACE,
@@ -157,7 +162,7 @@ power_set_governor_userspace(struct rte_power_info *pi)
 		goto out;
 	}
 	/* Save the original governor */
-	snprintf(pi->governor_ori, sizeof(pi->governor_ori), "%s", buf);
+	strlcpy(pi->governor_ori, buf, sizeof(pi->governor_ori));
 
 	/* Write 'userspace' to the governor */
 	val = fseek(f, 0, SEEK_SET);
@@ -166,6 +171,10 @@ power_set_governor_userspace(struct rte_power_info *pi)
 	val = fputs(POWER_GOVERNOR_USERSPACE, f);
 	FOPS_OR_ERR_GOTO(val, out);
 
+	/* We need to flush to see if the fputs succeeds */
+	val = fflush(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);
@@ -281,6 +290,12 @@ out:
 	return -1;
 }
 
+int
+power_acpi_cpufreq_check_supported(void)
+{
+	return cpufreq_check_scaling_driver(POWER_ACPI_DRIVER);
+}
+
 int
 power_acpi_cpufreq_init(unsigned int lcore_id)
 {
@@ -436,8 +451,13 @@ power_acpi_cpufreq_freqs(unsigned int 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");
+	if (lcore_id >= RTE_MAX_LCORE) {
+		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
+		return 0;
+	}
+
+	if (freqs == NULL) {
+		RTE_LOG(ERR, POWER, "NULL buffer supplied\n");
 		return 0;
 	}
 
@@ -502,7 +522,8 @@ power_acpi_cpufreq_freq_up(unsigned int lcore_id)
 	}
 
 	pi = &lcore_power_info[lcore_id];
-	if (pi->curr_idx == 0)
+	if (pi->curr_idx == 0 ||
+	    (pi->curr_idx == 1 && pi->turbo_available && !pi->turbo_enable))
 		return 0;
 
 	/* Frequencies in the array are from high to low. */
@@ -623,3 +644,24 @@ power_acpi_disable_turbo(unsigned int lcore_id)
 
 	return 0;
 }
+
+int power_acpi_get_capabilities(unsigned int lcore_id,
+		struct rte_power_core_capabilities *caps)
+{
+	struct rte_power_info *pi;
+
+	if (lcore_id >= RTE_MAX_LCORE) {
+		RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
+		return -1;
+	}
+	if (caps == NULL) {
+		RTE_LOG(ERR, POWER, "Invalid argument\n");
+		return -1;
+	}
+
+	pi = &lcore_power_info[lcore_id];
+	caps->capabilities = 0;
+	caps->turbo = !!(pi->turbo_available);
+
+	return 0;
+}