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The Intel Hardware Feedback Interface provides guidance to the operating system about the performance and energy efficiency capabilities of each CPU in the system. Capabilities are numbers between 0 and 255 where a higher number represents a higher capability. For each CPU, energy efficiency and performance are reported as separate capabilities. Hardware computes these capabilities based on the operating conditions of the system such as power and thermal limits. These capabilities are shared with the operating system in a table resident in memory. Each package in the system has its own HFI instance. Every logical CPU in the package is represented in the table. More than one logical CPUs may be represented in a single table entry. When the hardware updates the table, it generates a package-level thermal interrupt. The size and format of the HFI table depend on the supported features and can only be determined at runtime. To minimally initialize the HFI, parse its features and allocate one instance per package of a data structure with the necessary parameters to read and navigate a local copy (i.e., owned by the driver) of individual HFI tables. A subsequent changeset will provide per-CPU initialization and interrupt handling. Reviewed-by: Len Brown <len.brown@intel.com> Co-developed by: Aubrey Li <aubrey.li@linux.intel.com> Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
16 lines
758 B
Makefile
16 lines
758 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for various Intel thermal drivers.
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obj-$(CONFIG_INTEL_POWERCLAMP) += intel_powerclamp.o
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obj-$(CONFIG_X86_PKG_TEMP_THERMAL) += x86_pkg_temp_thermal.o
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obj-$(CONFIG_INTEL_SOC_DTS_IOSF_CORE) += intel_soc_dts_iosf.o
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obj-$(CONFIG_INTEL_SOC_DTS_THERMAL) += intel_soc_dts_thermal.o
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obj-$(CONFIG_INTEL_QUARK_DTS_THERMAL) += intel_quark_dts_thermal.o
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obj-$(CONFIG_INT340X_THERMAL) += int340x_thermal/
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obj-$(CONFIG_INTEL_BXT_PMIC_THERMAL) += intel_bxt_pmic_thermal.o
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obj-$(CONFIG_INTEL_PCH_THERMAL) += intel_pch_thermal.o
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obj-$(CONFIG_INTEL_TCC_COOLING) += intel_tcc_cooling.o
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obj-$(CONFIG_X86_THERMAL_VECTOR) += therm_throt.o
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obj-$(CONFIG_INTEL_MENLOW) += intel_menlow.o
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obj-$(CONFIG_INTEL_HFI_THERMAL) += intel_hfi.o
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