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authorZhang Rui <rui.zhang@intel.com>2019-07-10 21:44:24 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-07-11 15:08:57 +0200
commitff956826a403f5cf189978d5ff6b3eb53aa11610 (patch)
treeb7f735cb9cc7ecfe1ba642c29a853d048603959f /include/linux/intel_rapl.h
parent8310e8202f24d674b6b2bd341af15d72299f696d (diff)
intel_rapl: introduce intel_rapl.h
Create a new header file for the common definitions that might be used by different RAPL Interface. Reviewed-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com> Tested-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/intel_rapl.h')
-rw-r--r--include/linux/intel_rapl.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/include/linux/intel_rapl.h b/include/linux/intel_rapl.h
new file mode 100644
index 000000000000..94716036d829
--- /dev/null
+++ b/include/linux/intel_rapl.h
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Data types and headers for RAPL support
+ *
+ * Copyright (C) 2019 Intel Corporation.
+ *
+ * Author: Zhang Rui <rui.zhang@intel.com>
+ */
+
+#ifndef __INTEL_RAPL_H__
+#define __INTEL_RAPL_H__
+
+#include <linux/types.h>
+#include <linux/powercap.h>
+
+enum rapl_domain_type {
+ RAPL_DOMAIN_PACKAGE, /* entire package/socket */
+ RAPL_DOMAIN_PP0, /* core power plane */
+ RAPL_DOMAIN_PP1, /* graphics uncore */
+ RAPL_DOMAIN_DRAM, /* DRAM control_type */
+ RAPL_DOMAIN_PLATFORM, /* PSys control_type */
+ RAPL_DOMAIN_MAX,
+};
+
+enum rapl_domain_reg_id {
+ RAPL_DOMAIN_REG_LIMIT,
+ RAPL_DOMAIN_REG_STATUS,
+ RAPL_DOMAIN_REG_PERF,
+ RAPL_DOMAIN_REG_POLICY,
+ RAPL_DOMAIN_REG_INFO,
+ RAPL_DOMAIN_REG_MAX,
+};
+
+struct rapl_package;
+
+enum rapl_primitives {
+ ENERGY_COUNTER,
+ POWER_LIMIT1,
+ POWER_LIMIT2,
+ FW_LOCK,
+
+ PL1_ENABLE, /* power limit 1, aka long term */
+ PL1_CLAMP, /* allow frequency to go below OS request */
+ PL2_ENABLE, /* power limit 2, aka short term, instantaneous */
+ PL2_CLAMP,
+
+ TIME_WINDOW1, /* long term */
+ TIME_WINDOW2, /* short term */
+ THERMAL_SPEC_POWER,
+ MAX_POWER,
+
+ MIN_POWER,
+ MAX_TIME_WINDOW,
+ THROTTLED_TIME,
+ PRIORITY_LEVEL,
+
+ /* below are not raw primitive data */
+ AVERAGE_POWER,
+ NR_RAPL_PRIMITIVES,
+};
+
+struct rapl_domain_data {
+ u64 primitives[NR_RAPL_PRIMITIVES];
+ unsigned long timestamp;
+};
+
+#define NR_POWER_LIMITS (2)
+struct rapl_power_limit {
+ struct powercap_zone_constraint *constraint;
+ int prim_id; /* primitive ID used to enable */
+ struct rapl_domain *domain;
+ const char *name;
+ u64 last_power_limit;
+};
+
+struct rapl_package;
+
+struct rapl_domain {
+ const char *name;
+ enum rapl_domain_type id;
+ int regs[RAPL_DOMAIN_REG_MAX];
+ struct powercap_zone power_zone;
+ struct rapl_domain_data rdd;
+ struct rapl_power_limit rpl[NR_POWER_LIMITS];
+ u64 attr_map; /* track capabilities */
+ unsigned int state;
+ unsigned int domain_energy_unit;
+ struct rapl_package *rp;
+};
+
+/* maximum rapl package domain name: package-%d-die-%d */
+#define PACKAGE_DOMAIN_NAME_LENGTH 30
+
+struct rapl_package {
+ unsigned int id; /* logical die id, equals physical 1-die systems */
+ unsigned int nr_domains;
+ unsigned long domain_map; /* bit map of active domains */
+ unsigned int power_unit;
+ unsigned int energy_unit;
+ unsigned int time_unit;
+ struct rapl_domain *domains; /* array of domains, sized at runtime */
+ struct powercap_zone *power_zone; /* keep track of parent zone */
+ unsigned long power_limit_irq; /* keep track of package power limit
+ * notify interrupt enable status.
+ */
+ struct list_head plist;
+ int lead_cpu; /* one active cpu per package for access */
+ /* Track active cpus */
+ struct cpumask cpumask;
+ char name[PACKAGE_DOMAIN_NAME_LENGTH];
+};
+
+#endif /* __INTEL_RAPL_H__ */