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tools/lib/thermal: Add a thermal library
The thermal framework implements a netlink notification mechanism to be used by the userspace to have a thermal configuration discovery, trip point changes or violation, cooling device changes notifications, etc... This library provides a level of abstraction for the thermal netlink notification allowing the userspace to connect to the notification mechanism more easily. The library is callback oriented. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20220420160933.347088-2-daniel.lezcano@linaro.org
This commit is contained in:
Daniel Lezcano
parent
bf70c57751
commit
47c4b0de08
@ -19541,6 +19541,7 @@ F: drivers/thermal/
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F: include/linux/cpu_cooling.h
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F: include/linux/thermal.h
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F: include/uapi/linux/thermal.h
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F: tools/lib/thermal/
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F: tools/thermal/
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THERMAL DRIVER FOR AMLOGIC SOCS
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@ -31,6 +31,7 @@ help:
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@echo ' bootconfig - boot config tool'
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@echo ' spi - spi tools'
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@echo ' tmon - thermal monitoring and tuning tool'
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@echo ' thermal - thermal library'
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@echo ' tracing - misc tracing tools'
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@echo ' turbostat - Intel CPU idle stats and freq reporting tool'
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@echo ' usb - USB testing tools'
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@ -85,6 +86,9 @@ perf: FORCE
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selftests: FORCE
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$(call descend,testing/$@)
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thermal: FORCE
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$(call descend,lib/$@)
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turbostat x86_energy_perf_policy intel-speed-select: FORCE
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$(call descend,power/x86/$@)
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@ -101,7 +105,7 @@ all: acpi cgroup counter cpupower gpio hv firewire \
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perf selftests bootconfig spi turbostat usb \
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virtio vm bpf x86_energy_perf_policy \
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tmon freefall iio objtool kvm_stat wmi \
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pci debugging tracing
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pci debugging tracing thermal
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acpi_install:
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$(call descend,power/$(@:_install=),install)
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@ -115,6 +119,9 @@ cgroup_install counter_install firewire_install gpio_install hv_install iio_inst
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selftests_install:
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$(call descend,testing/$(@:_install=),install)
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thermal_install:
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$(call descend,lib/$(@:_install=),install)
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turbostat_install x86_energy_perf_policy_install intel-speed-select_install:
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$(call descend,power/x86/$(@:_install=),install)
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@ -160,6 +167,9 @@ perf_clean:
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selftests_clean:
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$(call descend,testing/$(@:_clean=),clean)
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thermal_clean:
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$(call descend,lib/thermal,clean)
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turbostat_clean x86_energy_perf_policy_clean intel-speed-select_clean:
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$(call descend,power/x86/$(@:_clean=),clean)
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@ -177,6 +187,6 @@ clean: acpi_clean cgroup_clean counter_clean cpupower_clean hv_clean firewire_cl
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vm_clean bpf_clean iio_clean x86_energy_perf_policy_clean tmon_clean \
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freefall_clean build_clean libbpf_clean libsubcmd_clean \
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gpio_clean objtool_clean leds_clean wmi_clean pci_clean firmware_clean debugging_clean \
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intel-speed-select_clean tracing_clean
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intel-speed-select_clean tracing_clean thermal_clean
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.PHONY: FORCE
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2
tools/lib/thermal/.gitignore
vendored
Normal file
2
tools/lib/thermal/.gitignore
vendored
Normal file
@ -0,0 +1,2 @@
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libthermal.so*
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libthermal.pc
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5
tools/lib/thermal/Build
Normal file
5
tools/lib/thermal/Build
Normal file
@ -0,0 +1,5 @@
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libthermal-y += commands.o
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libthermal-y += events.o
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libthermal-y += thermal_nl.o
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libthermal-y += sampling.o
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libthermal-y += thermal.o
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165
tools/lib/thermal/Makefile
Normal file
165
tools/lib/thermal/Makefile
Normal file
@ -0,0 +1,165 @@
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# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
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# Most of this file is copied from tools/lib/perf/Makefile
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LIBTHERMAL_VERSION = 0
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LIBTHERMAL_PATCHLEVEL = 0
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LIBTHERMAL_EXTRAVERSION = 1
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MAKEFLAGS += --no-print-directory
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ifeq ($(srctree),)
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srctree := $(patsubst %/,%,$(dir $(CURDIR)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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# $(info Determined 'srctree' to be $(srctree))
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endif
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INSTALL = install
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# Use DESTDIR for installing into a different root directory.
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# This is useful for building a package. The program will be
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# installed in this directory as if it was the root directory.
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# Then the build tool can move it later.
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DESTDIR ?=
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DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
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include $(srctree)/tools/scripts/Makefile.include
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include $(srctree)/tools/scripts/Makefile.arch
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ifeq ($(LP64), 1)
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libdir_relative = lib64
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else
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libdir_relative = lib
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endif
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prefix ?=
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libdir = $(prefix)/$(libdir_relative)
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# Shell quotes
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libdir_SQ = $(subst ','\'',$(libdir))
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libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
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ifeq ("$(origin V)", "command line")
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VERBOSE = $(V)
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endif
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ifndef VERBOSE
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VERBOSE = 0
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endif
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ifeq ($(VERBOSE),1)
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Q =
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else
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Q = @
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endif
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# Set compile option CFLAGS
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ifdef EXTRA_CFLAGS
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CFLAGS := $(EXTRA_CFLAGS)
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else
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CFLAGS := -g -Wall
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endif
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INCLUDES = \
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-I/usr/include/libnl3 \
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-I$(srctree)/tools/lib/thermal/include \
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-I$(srctree)/tools/lib/ \
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-I$(srctree)/tools/include \
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-I$(srctree)/tools/arch/$(SRCARCH)/include/ \
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-I$(srctree)/tools/arch/$(SRCARCH)/include/uapi \
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-I$(srctree)/tools/include/uapi
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# Append required CFLAGS
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override CFLAGS += $(EXTRA_WARNINGS)
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override CFLAGS += -Werror -Wall
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override CFLAGS += -fPIC
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override CFLAGS += $(INCLUDES)
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override CFLAGS += -fvisibility=hidden
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override CFGLAS += -Wl,-L.
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override CFGLAS += -Wl,-lthermal
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all:
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export srctree OUTPUT CC LD CFLAGS V
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export DESTDIR DESTDIR_SQ
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include $(srctree)/tools/build/Makefile.include
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VERSION_SCRIPT := libthermal.map
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PATCHLEVEL = $(LIBTHERMAL_PATCHLEVEL)
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EXTRAVERSION = $(LIBTHERMAL_EXTRAVERSION)
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VERSION = $(LIBTHERMAL_VERSION).$(LIBTHERMAL_PATCHLEVEL).$(LIBTHERMAL_EXTRAVERSION)
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LIBTHERMAL_SO := $(OUTPUT)libthermal.so.$(VERSION)
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LIBTHERMAL_A := $(OUTPUT)libthermal.a
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LIBTHERMAL_IN := $(OUTPUT)libthermal-in.o
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LIBTHERMAL_PC := $(OUTPUT)libthermal.pc
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LIBTHERMAL_ALL := $(LIBTHERMAL_A) $(OUTPUT)libthermal.so*
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THERMAL_UAPI := include/uapi/linux/thermal.h
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$(THERMAL_UAPI): FORCE
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ln -sf $(srctree)/$@ $(srctree)/tools/$@
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$(LIBTHERMAL_IN): FORCE
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$(Q)$(MAKE) $(build)=libthermal
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$(LIBTHERMAL_A): $(LIBTHERMAL_IN)
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$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIBTHERMAL_IN)
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$(LIBTHERMAL_SO): $(LIBTHERMAL_IN)
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$(QUIET_LINK)$(CC) --shared -Wl,-soname,libthermal.so \
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-Wl,--version-script=$(VERSION_SCRIPT) $^ -o $@
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@ln -sf $(@F) $(OUTPUT)libthermal.so
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@ln -sf $(@F) $(OUTPUT)libthermal.so.$(LIBTHERMAL_VERSION)
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libs: $(THERMAL_UAPI) $(LIBTHERMAL_A) $(LIBTHERMAL_SO) $(LIBTHERMAL_PC)
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all: fixdep
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$(Q)$(MAKE) libs
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clean:
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$(call QUIET_CLEAN, libthermal) $(RM) $(LIBTHERMAL_A) \
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*.o *~ *.a *.so *.so.$(VERSION) *.so.$(LIBTHERMAL_VERSION) .*.d .*.cmd LIBTHERMAL-CFLAGS $(LIBTHERMAL_PC)
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$(LIBTHERMAL_PC):
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$(QUIET_GEN)sed -e "s|@PREFIX@|$(prefix)|" \
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-e "s|@LIBDIR@|$(libdir_SQ)|" \
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-e "s|@VERSION@|$(VERSION)|" \
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< libthermal.pc.template > $@
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define do_install_mkdir
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if [ ! -d '$(DESTDIR_SQ)$1' ]; then \
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$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
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fi
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endef
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define do_install
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if [ ! -d '$(DESTDIR_SQ)$2' ]; then \
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$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
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fi; \
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$(INSTALL) $1 $(if $3,-m $3,) '$(DESTDIR_SQ)$2'
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endef
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install_lib: libs
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$(call QUIET_INSTALL, $(LIBTHERMAL_ALL)) \
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$(call do_install_mkdir,$(libdir_SQ)); \
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cp -fpR $(LIBTHERMAL_ALL) $(DESTDIR)$(libdir_SQ)
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install_headers:
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$(call QUIET_INSTALL, headers) \
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$(call do_install,include/thermal.h,$(prefix)/include/thermal,644); \
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install_pkgconfig: $(LIBTHERMAL_PC)
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$(call QUIET_INSTALL, $(LIBTHERMAL_PC)) \
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$(call do_install,$(LIBTHERMAL_PC),$(libdir_SQ)/pkgconfig,644)
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install_doc:
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$(Q)$(MAKE) -C Documentation install-man install-html install-examples
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install: install_lib install_headers install_pkgconfig
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FORCE:
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.PHONY: all install clean FORCE
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349
tools/lib/thermal/commands.c
Normal file
349
tools/lib/thermal/commands.c
Normal file
@ -0,0 +1,349 @@
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// SPDX-License-Identifier: LGPL-2.1+
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// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
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#define _GNU_SOURCE
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <thermal.h>
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#include "thermal_nl.h"
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static struct nla_policy thermal_genl_policy[THERMAL_GENL_ATTR_MAX + 1] = {
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/* Thermal zone */
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[THERMAL_GENL_ATTR_TZ] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_TZ_ID] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TEMP] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TRIP] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_TZ_TRIP_ID] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TRIP_TEMP] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TRIP_TYPE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TRIP_HYST] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_MODE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_CDEV_WEIGHT] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_NAME] = { .type = NLA_STRING },
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/* Governor(s) */
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[THERMAL_GENL_ATTR_TZ_GOV] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_TZ_GOV_NAME] = { .type = NLA_STRING },
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/* Cooling devices */
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[THERMAL_GENL_ATTR_CDEV] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_CDEV_ID] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_CDEV_CUR_STATE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_CDEV_MAX_STATE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_CDEV_NAME] = { .type = NLA_STRING },
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};
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static int parse_tz_get(struct genl_info *info, struct thermal_zone **tz)
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{
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struct nlattr *attr;
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struct thermal_zone *__tz = NULL;
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size_t size = 0;
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int rem;
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nla_for_each_nested(attr, info->attrs[THERMAL_GENL_ATTR_TZ], rem) {
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if (nla_type(attr) == THERMAL_GENL_ATTR_TZ_ID) {
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size++;
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__tz = realloc(__tz, sizeof(*__tz) * (size + 2));
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if (!__tz)
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return THERMAL_ERROR;
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__tz[size - 1].id = nla_get_u32(attr);
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}
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if (nla_type(attr) == THERMAL_GENL_ATTR_TZ_NAME)
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nla_strlcpy(__tz[size - 1].name, attr,
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THERMAL_NAME_LENGTH);
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}
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if (__tz)
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__tz[size].id = -1;
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*tz = __tz;
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return THERMAL_SUCCESS;
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}
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static int parse_cdev_get(struct genl_info *info, struct thermal_cdev **cdev)
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{
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struct nlattr *attr;
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struct thermal_cdev *__cdev = NULL;
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size_t size = 0;
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int rem;
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nla_for_each_nested(attr, info->attrs[THERMAL_GENL_ATTR_CDEV], rem) {
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if (nla_type(attr) == THERMAL_GENL_ATTR_CDEV_ID) {
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size++;
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__cdev = realloc(__cdev, sizeof(*__cdev) * (size + 2));
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if (!__cdev)
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return THERMAL_ERROR;
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__cdev[size - 1].id = nla_get_u32(attr);
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}
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if (nla_type(attr) == THERMAL_GENL_ATTR_CDEV_NAME) {
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nla_strlcpy(__cdev[size - 1].name, attr,
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THERMAL_NAME_LENGTH);
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}
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if (nla_type(attr) == THERMAL_GENL_ATTR_CDEV_CUR_STATE)
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__cdev[size - 1].cur_state = nla_get_u32(attr);
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if (nla_type(attr) == THERMAL_GENL_ATTR_CDEV_MAX_STATE)
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__cdev[size - 1].max_state = nla_get_u32(attr);
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}
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if (__cdev)
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__cdev[size].id = -1;
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*cdev = __cdev;
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return THERMAL_SUCCESS;
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}
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static int parse_tz_get_trip(struct genl_info *info, struct thermal_zone *tz)
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{
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struct nlattr *attr;
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struct thermal_trip *__tt = NULL;
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size_t size = 0;
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int rem;
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nla_for_each_nested(attr, info->attrs[THERMAL_GENL_ATTR_TZ_TRIP], rem) {
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if (nla_type(attr) == THERMAL_GENL_ATTR_TZ_TRIP_ID) {
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size++;
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__tt = realloc(__tt, sizeof(*__tt) * (size + 2));
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if (!__tt)
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return THERMAL_ERROR;
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__tt[size - 1].id = nla_get_u32(attr);
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}
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if (nla_type(attr) == THERMAL_GENL_ATTR_TZ_TRIP_TYPE)
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__tt[size - 1].type = nla_get_u32(attr);
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if (nla_type(attr) == THERMAL_GENL_ATTR_TZ_TRIP_TEMP)
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__tt[size - 1].temp = nla_get_u32(attr);
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if (nla_type(attr) == THERMAL_GENL_ATTR_TZ_TRIP_HYST)
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__tt[size - 1].hyst = nla_get_u32(attr);
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}
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if (__tt)
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__tt[size].id = -1;
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tz->trip = __tt;
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return THERMAL_SUCCESS;
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}
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static int parse_tz_get_temp(struct genl_info *info, struct thermal_zone *tz)
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{
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int id = -1;
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if (info->attrs[THERMAL_GENL_ATTR_TZ_ID])
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id = nla_get_u32(info->attrs[THERMAL_GENL_ATTR_TZ_ID]);
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if (tz->id != id)
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return THERMAL_ERROR;
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if (info->attrs[THERMAL_GENL_ATTR_TZ_TEMP])
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tz->temp = nla_get_u32(info->attrs[THERMAL_GENL_ATTR_TZ_TEMP]);
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return THERMAL_SUCCESS;
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}
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static int parse_tz_get_gov(struct genl_info *info, struct thermal_zone *tz)
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{
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int id = -1;
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if (info->attrs[THERMAL_GENL_ATTR_TZ_ID])
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id = nla_get_u32(info->attrs[THERMAL_GENL_ATTR_TZ_ID]);
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if (tz->id != id)
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return THERMAL_ERROR;
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if (info->attrs[THERMAL_GENL_ATTR_TZ_GOV_NAME]) {
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nla_strlcpy(tz->governor,
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info->attrs[THERMAL_GENL_ATTR_TZ_GOV_NAME],
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THERMAL_NAME_LENGTH);
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}
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return THERMAL_SUCCESS;
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}
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static int handle_netlink(struct nl_cache_ops *unused,
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struct genl_cmd *cmd,
|
||||
struct genl_info *info, void *arg)
|
||||
{
|
||||
int ret;
|
||||
|
||||
switch (cmd->c_id) {
|
||||
|
||||
case THERMAL_GENL_CMD_TZ_GET_ID:
|
||||
ret = parse_tz_get(info, arg);
|
||||
break;
|
||||
|
||||
case THERMAL_GENL_CMD_CDEV_GET:
|
||||
ret = parse_cdev_get(info, arg);
|
||||
break;
|
||||
|
||||
case THERMAL_GENL_CMD_TZ_GET_TEMP:
|
||||
ret = parse_tz_get_temp(info, arg);
|
||||
break;
|
||||
|
||||
case THERMAL_GENL_CMD_TZ_GET_TRIP:
|
||||
ret = parse_tz_get_trip(info, arg);
|
||||
break;
|
||||
|
||||
case THERMAL_GENL_CMD_TZ_GET_GOV:
|
||||
ret = parse_tz_get_gov(info, arg);
|
||||
break;
|
||||
|
||||
default:
|
||||
return THERMAL_ERROR;
|
||||
};
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct genl_cmd thermal_cmds[] = {
|
||||
{
|
||||
.c_id = THERMAL_GENL_CMD_TZ_GET_ID,
|
||||
.c_name = (char *)"List thermal zones",
|
||||
.c_msg_parser = handle_netlink,
|
||||
.c_maxattr = THERMAL_GENL_ATTR_MAX,
|
||||
.c_attr_policy = thermal_genl_policy,
|
||||
},
|
||||
{
|
||||
.c_id = THERMAL_GENL_CMD_TZ_GET_GOV,
|
||||
.c_name = (char *)"Get governor",
|
||||
.c_msg_parser = handle_netlink,
|
||||
.c_maxattr = THERMAL_GENL_ATTR_MAX,
|
||||
.c_attr_policy = thermal_genl_policy,
|
||||
},
|
||||
{
|
||||
.c_id = THERMAL_GENL_CMD_TZ_GET_TEMP,
|
||||
.c_name = (char *)"Get thermal zone temperature",
|
||||
.c_msg_parser = handle_netlink,
|
||||
.c_maxattr = THERMAL_GENL_ATTR_MAX,
|
||||
.c_attr_policy = thermal_genl_policy,
|
||||
},
|
||||
{
|
||||
.c_id = THERMAL_GENL_CMD_TZ_GET_TRIP,
|
||||
.c_name = (char *)"Get thermal zone trip points",
|
||||
.c_msg_parser = handle_netlink,
|
||||
.c_maxattr = THERMAL_GENL_ATTR_MAX,
|
||||
.c_attr_policy = thermal_genl_policy,
|
||||
},
|
||||
{
|
||||
.c_id = THERMAL_GENL_CMD_CDEV_GET,
|
||||
.c_name = (char *)"Get cooling devices",
|
||||
.c_msg_parser = handle_netlink,
|
||||
.c_maxattr = THERMAL_GENL_ATTR_MAX,
|
||||
.c_attr_policy = thermal_genl_policy,
|
||||
},
|
||||
};
|
||||
|
||||
static struct genl_ops thermal_cmd_ops = {
|
||||
.o_name = (char *)"thermal",
|
||||
.o_cmds = thermal_cmds,
|
||||
.o_ncmds = ARRAY_SIZE(thermal_cmds),
|
||||
};
|
||||
|
||||
static thermal_error_t thermal_genl_auto(struct thermal_handler *th, int id, int cmd,
|
||||
int flags, void *arg)
|
||||
{
|
||||
struct nl_msg *msg;
|
||||
void *hdr;
|
||||
|
||||
msg = nlmsg_alloc();
|
||||
if (!msg)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
hdr = genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, thermal_cmd_ops.o_id,
|
||||
0, flags, cmd, THERMAL_GENL_VERSION);
|
||||
if (!hdr)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
if (id >= 0 && nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_ID, id))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
if (nl_send_msg(th->sk_cmd, th->cb_cmd, msg, genl_handle_msg, arg))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
nlmsg_free(msg);
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
|
||||
thermal_error_t thermal_cmd_get_tz(struct thermal_handler *th, struct thermal_zone **tz)
|
||||
{
|
||||
return thermal_genl_auto(th, -1, THERMAL_GENL_CMD_TZ_GET_ID,
|
||||
NLM_F_DUMP | NLM_F_ACK, tz);
|
||||
}
|
||||
|
||||
thermal_error_t thermal_cmd_get_cdev(struct thermal_handler *th, struct thermal_cdev **tc)
|
||||
{
|
||||
return thermal_genl_auto(th, -1, THERMAL_GENL_CMD_CDEV_GET,
|
||||
NLM_F_DUMP | NLM_F_ACK, tc);
|
||||
}
|
||||
|
||||
thermal_error_t thermal_cmd_get_trip(struct thermal_handler *th, struct thermal_zone *tz)
|
||||
{
|
||||
return thermal_genl_auto(th, tz->id, THERMAL_GENL_CMD_TZ_GET_TRIP,
|
||||
0, tz);
|
||||
}
|
||||
|
||||
thermal_error_t thermal_cmd_get_governor(struct thermal_handler *th, struct thermal_zone *tz)
|
||||
{
|
||||
return thermal_genl_auto(th, tz->id, THERMAL_GENL_CMD_TZ_GET_GOV, 0, tz);
|
||||
}
|
||||
|
||||
thermal_error_t thermal_cmd_get_temp(struct thermal_handler *th, struct thermal_zone *tz)
|
||||
{
|
||||
return thermal_genl_auto(th, tz->id, THERMAL_GENL_CMD_TZ_GET_TEMP, 0, tz);
|
||||
}
|
||||
|
||||
thermal_error_t thermal_cmd_exit(struct thermal_handler *th)
|
||||
{
|
||||
if (genl_unregister_family(&thermal_cmd_ops))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
nl_thermal_disconnect(th->sk_cmd, th->cb_cmd);
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
|
||||
thermal_error_t thermal_cmd_init(struct thermal_handler *th)
|
||||
{
|
||||
int ret;
|
||||
int family;
|
||||
|
||||
if (nl_thermal_connect(&th->sk_cmd, &th->cb_cmd))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
ret = genl_register_family(&thermal_cmd_ops);
|
||||
if (ret)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
ret = genl_ops_resolve(th->sk_cmd, &thermal_cmd_ops);
|
||||
if (ret)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
family = genl_ctrl_resolve(th->sk_cmd, "nlctrl");
|
||||
if (family != GENL_ID_CTRL)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
164
tools/lib/thermal/events.c
Normal file
164
tools/lib/thermal/events.c
Normal file
@ -0,0 +1,164 @@
|
||||
// SPDX-License-Identifier: LGPL-2.1+
|
||||
// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
|
||||
#include <linux/netlink.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
|
||||
|
||||
#include <thermal.h>
|
||||
#include "thermal_nl.h"
|
||||
|
||||
/*
|
||||
* Optimization: fill this array to tell which event we do want to pay
|
||||
* attention to. That happens at init time with the ops
|
||||
* structure. Each ops will enable the event and the general handler
|
||||
* will be able to discard the event if there is not ops associated
|
||||
* with it.
|
||||
*/
|
||||
static int enabled_ops[__THERMAL_GENL_EVENT_MAX];
|
||||
|
||||
static int handle_thermal_event(struct nl_msg *n, void *arg)
|
||||
{
|
||||
struct nlmsghdr *nlh = nlmsg_hdr(n);
|
||||
struct genlmsghdr *genlhdr = genlmsg_hdr(nlh);
|
||||
struct nlattr *attrs[THERMAL_GENL_ATTR_MAX + 1];
|
||||
struct thermal_handler_param *thp = arg;
|
||||
struct thermal_events_ops *ops = &thp->th->ops->events;
|
||||
|
||||
genlmsg_parse(nlh, 0, attrs, THERMAL_GENL_ATTR_MAX, NULL);
|
||||
|
||||
arg = thp->arg;
|
||||
|
||||
/*
|
||||
* This is an event we don't care of, bail out.
|
||||
*/
|
||||
if (!enabled_ops[genlhdr->cmd])
|
||||
return THERMAL_SUCCESS;
|
||||
|
||||
switch (genlhdr->cmd) {
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_CREATE:
|
||||
return ops->tz_create(nla_get_string(attrs[THERMAL_GENL_ATTR_TZ_NAME]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_DELETE:
|
||||
return ops->tz_delete(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_ENABLE:
|
||||
return ops->tz_enable(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_DISABLE:
|
||||
return ops->tz_disable(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_TRIP_CHANGE:
|
||||
return ops->trip_change(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_TYPE]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_TEMP]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_HYST]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_TRIP_ADD:
|
||||
return ops->trip_add(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_TYPE]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_TEMP]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_HYST]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_TRIP_DELETE:
|
||||
return ops->trip_delete(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_TRIP_UP:
|
||||
return ops->trip_high(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TEMP]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_TRIP_DOWN:
|
||||
return ops->trip_low(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TRIP_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TEMP]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_CDEV_ADD:
|
||||
return ops->cdev_add(nla_get_string(attrs[THERMAL_GENL_ATTR_CDEV_NAME]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_MAX_STATE]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_CDEV_DELETE:
|
||||
return ops->cdev_delete(nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_ID]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_CDEV_STATE_UPDATE:
|
||||
return ops->cdev_update(nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_CDEV_CUR_STATE]), arg);
|
||||
|
||||
case THERMAL_GENL_EVENT_TZ_GOV_CHANGE:
|
||||
return ops->gov_change(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]),
|
||||
nla_get_string(attrs[THERMAL_GENL_ATTR_GOV_NAME]), arg);
|
||||
default:
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
static void thermal_events_ops_init(struct thermal_events_ops *ops)
|
||||
{
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_CREATE] = !!ops->tz_create;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_DELETE] = !!ops->tz_delete;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_DISABLE] = !!ops->tz_disable;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_ENABLE] = !!ops->tz_enable;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_UP] = !!ops->trip_high;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_DOWN] = !!ops->trip_low;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_CHANGE] = !!ops->trip_change;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_ADD] = !!ops->trip_add;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_DELETE] = !!ops->trip_delete;
|
||||
enabled_ops[THERMAL_GENL_EVENT_CDEV_ADD] = !!ops->cdev_add;
|
||||
enabled_ops[THERMAL_GENL_EVENT_CDEV_DELETE] = !!ops->cdev_delete;
|
||||
enabled_ops[THERMAL_GENL_EVENT_CDEV_STATE_UPDATE] = !!ops->cdev_update;
|
||||
enabled_ops[THERMAL_GENL_EVENT_TZ_GOV_CHANGE] = !!ops->gov_change;
|
||||
}
|
||||
|
||||
thermal_error_t thermal_events_handle(struct thermal_handler *th, void *arg)
|
||||
{
|
||||
struct thermal_handler_param thp = { .th = th, .arg = arg };
|
||||
|
||||
if (!th)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
if (nl_cb_set(th->cb_event, NL_CB_VALID, NL_CB_CUSTOM,
|
||||
handle_thermal_event, &thp))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
return nl_recvmsgs(th->sk_event, th->cb_event);
|
||||
}
|
||||
|
||||
int thermal_events_fd(struct thermal_handler *th)
|
||||
{
|
||||
if (!th)
|
||||
return -1;
|
||||
|
||||
return nl_socket_get_fd(th->sk_event);
|
||||
}
|
||||
|
||||
thermal_error_t thermal_events_exit(struct thermal_handler *th)
|
||||
{
|
||||
if (nl_unsubscribe_thermal(th->sk_event, th->cb_event,
|
||||
THERMAL_GENL_EVENT_GROUP_NAME))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
nl_thermal_disconnect(th->sk_event, th->cb_event);
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
|
||||
thermal_error_t thermal_events_init(struct thermal_handler *th)
|
||||
{
|
||||
thermal_events_ops_init(&th->ops->events);
|
||||
|
||||
if (nl_thermal_connect(&th->sk_event, &th->cb_event))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
if (nl_subscribe_thermal(th->sk_event, th->cb_event,
|
||||
THERMAL_GENL_EVENT_GROUP_NAME))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
142
tools/lib/thermal/include/thermal.h
Normal file
142
tools/lib/thermal/include/thermal.h
Normal file
@ -0,0 +1,142 @@
|
||||
/* SPDX-License-Identifier: LGPL-2.1+ */
|
||||
/* Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org> */
|
||||
#ifndef __LIBTHERMAL_H
|
||||
#define __LIBTHERMAL_H
|
||||
|
||||
#include <linux/thermal.h>
|
||||
|
||||
#ifndef LIBTHERMAL_API
|
||||
#define LIBTHERMAL_API __attribute__((visibility("default")))
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
struct thermal_sampling_ops {
|
||||
int (*tz_temp)(int tz_id, int temp, void *arg);
|
||||
};
|
||||
|
||||
struct thermal_events_ops {
|
||||
int (*tz_create)(const char *name, int tz_id, void *arg);
|
||||
int (*tz_delete)(int tz_id, void *arg);
|
||||
int (*tz_enable)(int tz_id, void *arg);
|
||||
int (*tz_disable)(int tz_id, void *arg);
|
||||
int (*trip_high)(int tz_id, int trip_id, int temp, void *arg);
|
||||
int (*trip_low)(int tz_id, int trip_id, int temp, void *arg);
|
||||
int (*trip_add)(int tz_id, int trip_id, int type, int temp, int hyst, void *arg);
|
||||
int (*trip_change)(int tz_id, int trip_id, int type, int temp, int hyst, void *arg);
|
||||
int (*trip_delete)(int tz_id, int trip_id, void *arg);
|
||||
int (*cdev_add)(const char *name, int cdev_id, int max_state, void *arg);
|
||||
int (*cdev_delete)(int cdev_id, void *arg);
|
||||
int (*cdev_update)(int cdev_id, int cur_state, void *arg);
|
||||
int (*gov_change)(int tz_id, const char *gov_name, void *arg);
|
||||
};
|
||||
|
||||
struct thermal_ops {
|
||||
struct thermal_sampling_ops sampling;
|
||||
struct thermal_events_ops events;
|
||||
};
|
||||
|
||||
struct thermal_trip {
|
||||
int id;
|
||||
int type;
|
||||
int temp;
|
||||
int hyst;
|
||||
};
|
||||
|
||||
struct thermal_zone {
|
||||
int id;
|
||||
int temp;
|
||||
char name[THERMAL_NAME_LENGTH];
|
||||
char governor[THERMAL_NAME_LENGTH];
|
||||
struct thermal_trip *trip;
|
||||
};
|
||||
|
||||
struct thermal_cdev {
|
||||
int id;
|
||||
char name[THERMAL_NAME_LENGTH];
|
||||
int max_state;
|
||||
int min_state;
|
||||
int cur_state;
|
||||
};
|
||||
|
||||
typedef enum {
|
||||
THERMAL_ERROR = -1,
|
||||
THERMAL_SUCCESS = 0,
|
||||
} thermal_error_t;
|
||||
|
||||
struct thermal_handler;
|
||||
|
||||
typedef int (*cb_tz_t)(struct thermal_zone *, void *);
|
||||
|
||||
typedef int (*cb_tt_t)(struct thermal_trip *, void *);
|
||||
|
||||
typedef int (*cb_tc_t)(struct thermal_cdev *, void *);
|
||||
|
||||
LIBTHERMAL_API int for_each_thermal_zone(struct thermal_zone *tz, cb_tz_t cb, void *arg);
|
||||
|
||||
LIBTHERMAL_API int for_each_thermal_trip(struct thermal_trip *tt, cb_tt_t cb, void *arg);
|
||||
|
||||
LIBTHERMAL_API int for_each_thermal_cdev(struct thermal_cdev *cdev, cb_tc_t cb, void *arg);
|
||||
|
||||
LIBTHERMAL_API struct thermal_zone *thermal_zone_find_by_name(struct thermal_zone *tz,
|
||||
const char *name);
|
||||
|
||||
LIBTHERMAL_API struct thermal_zone *thermal_zone_find_by_id(struct thermal_zone *tz, int id);
|
||||
|
||||
LIBTHERMAL_API struct thermal_zone *thermal_zone_discover(struct thermal_handler *th);
|
||||
|
||||
LIBTHERMAL_API struct thermal_handler *thermal_init(struct thermal_ops *ops);
|
||||
|
||||
LIBTHERMAL_API void thermal_exit(struct thermal_handler *th);
|
||||
|
||||
/*
|
||||
* Netlink thermal events
|
||||
*/
|
||||
LIBTHERMAL_API thermal_error_t thermal_events_exit(struct thermal_handler *th);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_events_init(struct thermal_handler *th);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_events_handle(struct thermal_handler *th, void *arg);
|
||||
|
||||
LIBTHERMAL_API int thermal_events_fd(struct thermal_handler *th);
|
||||
|
||||
/*
|
||||
* Netlink thermal commands
|
||||
*/
|
||||
LIBTHERMAL_API thermal_error_t thermal_cmd_exit(struct thermal_handler *th);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_cmd_init(struct thermal_handler *th);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_cmd_get_tz(struct thermal_handler *th,
|
||||
struct thermal_zone **tz);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_cmd_get_cdev(struct thermal_handler *th,
|
||||
struct thermal_cdev **tc);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_cmd_get_trip(struct thermal_handler *th,
|
||||
struct thermal_zone *tz);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_cmd_get_governor(struct thermal_handler *th,
|
||||
struct thermal_zone *tz);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_cmd_get_temp(struct thermal_handler *th,
|
||||
struct thermal_zone *tz);
|
||||
|
||||
/*
|
||||
* Netlink thermal samples
|
||||
*/
|
||||
LIBTHERMAL_API thermal_error_t thermal_sampling_exit(struct thermal_handler *th);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_sampling_init(struct thermal_handler *th);
|
||||
|
||||
LIBTHERMAL_API thermal_error_t thermal_sampling_handle(struct thermal_handler *th, void *arg);
|
||||
|
||||
LIBTHERMAL_API int thermal_sampling_fd(struct thermal_handler *th);
|
||||
|
||||
#endif /* __LIBTHERMAL_H */
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
25
tools/lib/thermal/libthermal.map
Normal file
25
tools/lib/thermal/libthermal.map
Normal file
@ -0,0 +1,25 @@
|
||||
LIBTHERMAL_0.0.1 {
|
||||
global:
|
||||
thermal_init;
|
||||
for_each_thermal_zone;
|
||||
for_each_thermal_trip;
|
||||
for_each_thermal_cdev;
|
||||
thermal_zone_find_by_name;
|
||||
thermal_zone_find_by_id;
|
||||
thermal_zone_discover;
|
||||
thermal_init;
|
||||
thermal_events_init;
|
||||
thermal_events_handle;
|
||||
thermal_events_fd;
|
||||
thermal_cmd_init;
|
||||
thermal_cmd_get_tz;
|
||||
thermal_cmd_get_cdev;
|
||||
thermal_cmd_get_trip;
|
||||
thermal_cmd_get_governor;
|
||||
thermal_cmd_get_temp;
|
||||
thermal_sampling_init;
|
||||
thermal_sampling_handle;
|
||||
thermal_sampling_fd;
|
||||
local:
|
||||
*;
|
||||
};
|
||||
12
tools/lib/thermal/libthermal.pc.template
Normal file
12
tools/lib/thermal/libthermal.pc.template
Normal file
@ -0,0 +1,12 @@
|
||||
# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
|
||||
|
||||
prefix=@PREFIX@
|
||||
libdir=@LIBDIR@
|
||||
includedir=${prefix}/include
|
||||
|
||||
Name: libthermal
|
||||
Description: thermal library
|
||||
Requires: libnl-3.0 libnl-genl-3.0
|
||||
Version: @VERSION@
|
||||
Libs: -L${libdir} -lnl-genl-3 -lnl-3
|
||||
Cflags: -I${includedir} -I{include}/libnl3
|
||||
75
tools/lib/thermal/sampling.c
Normal file
75
tools/lib/thermal/sampling.c
Normal file
@ -0,0 +1,75 @@
|
||||
// SPDX-License-Identifier: LGPL-2.1+
|
||||
// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <thermal.h>
|
||||
#include "thermal_nl.h"
|
||||
|
||||
static int handle_thermal_sample(struct nl_msg *n, void *arg)
|
||||
{
|
||||
struct nlmsghdr *nlh = nlmsg_hdr(n);
|
||||
struct genlmsghdr *genlhdr = genlmsg_hdr(nlh);
|
||||
struct nlattr *attrs[THERMAL_GENL_ATTR_MAX + 1];
|
||||
struct thermal_handler_param *thp = arg;
|
||||
struct thermal_handler *th = thp->th;
|
||||
|
||||
genlmsg_parse(nlh, 0, attrs, THERMAL_GENL_ATTR_MAX, NULL);
|
||||
|
||||
switch (genlhdr->cmd) {
|
||||
|
||||
case THERMAL_GENL_SAMPLING_TEMP:
|
||||
return th->ops->sampling.tz_temp(
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]),
|
||||
nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TEMP]), arg);
|
||||
default:
|
||||
return THERMAL_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
thermal_error_t thermal_sampling_handle(struct thermal_handler *th, void *arg)
|
||||
{
|
||||
struct thermal_handler_param thp = { .th = th, .arg = arg };
|
||||
|
||||
if (!th)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
if (nl_cb_set(th->cb_sampling, NL_CB_VALID, NL_CB_CUSTOM,
|
||||
handle_thermal_sample, &thp))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
return nl_recvmsgs(th->sk_sampling, th->cb_sampling);
|
||||
}
|
||||
|
||||
int thermal_sampling_fd(struct thermal_handler *th)
|
||||
{
|
||||
if (!th)
|
||||
return -1;
|
||||
|
||||
return nl_socket_get_fd(th->sk_sampling);
|
||||
}
|
||||
|
||||
thermal_error_t thermal_sampling_exit(struct thermal_handler *th)
|
||||
{
|
||||
if (nl_unsubscribe_thermal(th->sk_sampling, th->cb_sampling,
|
||||
THERMAL_GENL_EVENT_GROUP_NAME))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
nl_thermal_disconnect(th->sk_sampling, th->cb_sampling);
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
|
||||
thermal_error_t thermal_sampling_init(struct thermal_handler *th)
|
||||
{
|
||||
if (nl_thermal_connect(&th->sk_sampling, &th->cb_sampling))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
if (nl_subscribe_thermal(th->sk_sampling, th->cb_sampling,
|
||||
THERMAL_GENL_SAMPLING_GROUP_NAME))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
135
tools/lib/thermal/thermal.c
Normal file
135
tools/lib/thermal/thermal.c
Normal file
@ -0,0 +1,135 @@
|
||||
// SPDX-License-Identifier: LGPL-2.1+
|
||||
// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
|
||||
#include <stdio.h>
|
||||
#include <thermal.h>
|
||||
|
||||
#include "thermal_nl.h"
|
||||
|
||||
int for_each_thermal_cdev(struct thermal_cdev *cdev, cb_tc_t cb, void *arg)
|
||||
{
|
||||
int i, ret = 0;
|
||||
|
||||
if (!cdev)
|
||||
return 0;
|
||||
|
||||
for (i = 0; cdev[i].id != -1; i++)
|
||||
ret |= cb(&cdev[i], arg);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int for_each_thermal_trip(struct thermal_trip *tt, cb_tt_t cb, void *arg)
|
||||
{
|
||||
int i, ret = 0;
|
||||
|
||||
if (!tt)
|
||||
return 0;
|
||||
|
||||
for (i = 0; tt[i].id != -1; i++)
|
||||
ret |= cb(&tt[i], arg);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int for_each_thermal_zone(struct thermal_zone *tz, cb_tz_t cb, void *arg)
|
||||
{
|
||||
int i, ret = 0;
|
||||
|
||||
if (!tz)
|
||||
return 0;
|
||||
|
||||
for (i = 0; tz[i].id != -1; i++)
|
||||
ret |= cb(&tz[i], arg);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
struct thermal_zone *thermal_zone_find_by_name(struct thermal_zone *tz,
|
||||
const char *name)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (!tz || !name)
|
||||
return NULL;
|
||||
|
||||
for (i = 0; tz[i].id != -1; i++) {
|
||||
if (!strcmp(tz[i].name, name))
|
||||
return &tz[i];
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
struct thermal_zone *thermal_zone_find_by_id(struct thermal_zone *tz, int id)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (!tz || id < 0)
|
||||
return NULL;
|
||||
|
||||
for (i = 0; tz[i].id != -1; i++) {
|
||||
if (tz[i].id == id)
|
||||
return &tz[i];
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int __thermal_zone_discover(struct thermal_zone *tz, void *th)
|
||||
{
|
||||
if (thermal_cmd_get_trip(th, tz) < 0)
|
||||
return -1;
|
||||
|
||||
if (thermal_cmd_get_governor(th, tz))
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct thermal_zone *thermal_zone_discover(struct thermal_handler *th)
|
||||
{
|
||||
struct thermal_zone *tz;
|
||||
|
||||
if (thermal_cmd_get_tz(th, &tz) < 0)
|
||||
return NULL;
|
||||
|
||||
if (for_each_thermal_zone(tz, __thermal_zone_discover, th))
|
||||
return NULL;
|
||||
|
||||
return tz;
|
||||
}
|
||||
|
||||
void thermal_exit(struct thermal_handler *th)
|
||||
{
|
||||
thermal_cmd_exit(th);
|
||||
thermal_events_exit(th);
|
||||
thermal_sampling_exit(th);
|
||||
|
||||
free(th);
|
||||
}
|
||||
|
||||
struct thermal_handler *thermal_init(struct thermal_ops *ops)
|
||||
{
|
||||
struct thermal_handler *th;
|
||||
|
||||
th = malloc(sizeof(*th));
|
||||
if (!th)
|
||||
return NULL;
|
||||
th->ops = ops;
|
||||
|
||||
if (thermal_events_init(th))
|
||||
goto out_free;
|
||||
|
||||
if (thermal_sampling_init(th))
|
||||
goto out_free;
|
||||
|
||||
if (thermal_cmd_init(th))
|
||||
goto out_free;
|
||||
|
||||
return th;
|
||||
|
||||
out_free:
|
||||
free(th);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
215
tools/lib/thermal/thermal_nl.c
Normal file
215
tools/lib/thermal/thermal_nl.c
Normal file
@ -0,0 +1,215 @@
|
||||
// SPDX-License-Identifier: LGPL-2.1+
|
||||
// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <thermal.h>
|
||||
#include "thermal_nl.h"
|
||||
|
||||
struct handler_args {
|
||||
const char *group;
|
||||
int id;
|
||||
};
|
||||
|
||||
static __thread int err;
|
||||
static __thread int done;
|
||||
|
||||
static int nl_seq_check_handler(struct nl_msg *msg, void *arg)
|
||||
{
|
||||
return NL_OK;
|
||||
}
|
||||
|
||||
static int nl_error_handler(struct sockaddr_nl *nla, struct nlmsgerr *nl_err,
|
||||
void *arg)
|
||||
{
|
||||
int *ret = arg;
|
||||
|
||||
if (ret)
|
||||
*ret = nl_err->error;
|
||||
|
||||
return NL_STOP;
|
||||
}
|
||||
|
||||
static int nl_finish_handler(struct nl_msg *msg, void *arg)
|
||||
{
|
||||
int *ret = arg;
|
||||
|
||||
if (ret)
|
||||
*ret = 1;
|
||||
|
||||
return NL_OK;
|
||||
}
|
||||
|
||||
static int nl_ack_handler(struct nl_msg *msg, void *arg)
|
||||
{
|
||||
int *ret = arg;
|
||||
|
||||
if (ret)
|
||||
*ret = 1;
|
||||
|
||||
return NL_OK;
|
||||
}
|
||||
|
||||
int nl_send_msg(struct nl_sock *sock, struct nl_cb *cb, struct nl_msg *msg,
|
||||
int (*rx_handler)(struct nl_msg *, void *), void *data)
|
||||
{
|
||||
if (!rx_handler)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
err = nl_send_auto_complete(sock, msg);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, rx_handler, data);
|
||||
|
||||
err = done = 0;
|
||||
|
||||
while (err == 0 && done == 0)
|
||||
nl_recvmsgs(sock, cb);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int nl_family_handler(struct nl_msg *msg, void *arg)
|
||||
{
|
||||
struct handler_args *grp = arg;
|
||||
struct nlattr *tb[CTRL_ATTR_MAX + 1];
|
||||
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
|
||||
struct nlattr *mcgrp;
|
||||
int rem_mcgrp;
|
||||
|
||||
nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
|
||||
genlmsg_attrlen(gnlh, 0), NULL);
|
||||
|
||||
if (!tb[CTRL_ATTR_MCAST_GROUPS])
|
||||
return THERMAL_ERROR;
|
||||
|
||||
nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], rem_mcgrp) {
|
||||
|
||||
struct nlattr *tb_mcgrp[CTRL_ATTR_MCAST_GRP_MAX + 1];
|
||||
|
||||
nla_parse(tb_mcgrp, CTRL_ATTR_MCAST_GRP_MAX,
|
||||
nla_data(mcgrp), nla_len(mcgrp), NULL);
|
||||
|
||||
if (!tb_mcgrp[CTRL_ATTR_MCAST_GRP_NAME] ||
|
||||
!tb_mcgrp[CTRL_ATTR_MCAST_GRP_ID])
|
||||
continue;
|
||||
|
||||
if (strncmp(nla_data(tb_mcgrp[CTRL_ATTR_MCAST_GRP_NAME]),
|
||||
grp->group,
|
||||
nla_len(tb_mcgrp[CTRL_ATTR_MCAST_GRP_NAME])))
|
||||
continue;
|
||||
|
||||
grp->id = nla_get_u32(tb_mcgrp[CTRL_ATTR_MCAST_GRP_ID]);
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
|
||||
static int nl_get_multicast_id(struct nl_sock *sock, struct nl_cb *cb,
|
||||
const char *family, const char *group)
|
||||
{
|
||||
struct nl_msg *msg;
|
||||
int ret = 0, ctrlid;
|
||||
struct handler_args grp = {
|
||||
.group = group,
|
||||
.id = -ENOENT,
|
||||
};
|
||||
|
||||
msg = nlmsg_alloc();
|
||||
if (!msg)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
ctrlid = genl_ctrl_resolve(sock, "nlctrl");
|
||||
|
||||
genlmsg_put(msg, 0, 0, ctrlid, 0, 0, CTRL_CMD_GETFAMILY, 0);
|
||||
|
||||
nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family);
|
||||
|
||||
ret = nl_send_msg(sock, cb, msg, nl_family_handler, &grp);
|
||||
if (ret)
|
||||
goto nla_put_failure;
|
||||
|
||||
ret = grp.id;
|
||||
|
||||
nla_put_failure:
|
||||
nlmsg_free(msg);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int nl_thermal_connect(struct nl_sock **nl_sock, struct nl_cb **nl_cb)
|
||||
{
|
||||
struct nl_cb *cb;
|
||||
struct nl_sock *sock;
|
||||
|
||||
cb = nl_cb_alloc(NL_CB_DEFAULT);
|
||||
if (!cb)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
sock = nl_socket_alloc();
|
||||
if (!sock)
|
||||
goto out_cb_free;
|
||||
|
||||
if (genl_connect(sock))
|
||||
goto out_socket_free;
|
||||
|
||||
if (nl_cb_err(cb, NL_CB_CUSTOM, nl_error_handler, &err) ||
|
||||
nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, nl_finish_handler, &done) ||
|
||||
nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, nl_ack_handler, &done) ||
|
||||
nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, nl_seq_check_handler, &done))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
*nl_sock = sock;
|
||||
*nl_cb = cb;
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
|
||||
out_socket_free:
|
||||
nl_socket_free(sock);
|
||||
out_cb_free:
|
||||
nl_cb_put(cb);
|
||||
return THERMAL_ERROR;
|
||||
}
|
||||
|
||||
void nl_thermal_disconnect(struct nl_sock *nl_sock, struct nl_cb *nl_cb)
|
||||
{
|
||||
nl_close(nl_sock);
|
||||
nl_socket_free(nl_sock);
|
||||
nl_cb_put(nl_cb);
|
||||
}
|
||||
|
||||
int nl_unsubscribe_thermal(struct nl_sock *nl_sock, struct nl_cb *nl_cb,
|
||||
const char *group)
|
||||
{
|
||||
int mcid;
|
||||
|
||||
mcid = nl_get_multicast_id(nl_sock, nl_cb, THERMAL_GENL_FAMILY_NAME,
|
||||
group);
|
||||
if (mcid < 0)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
if (nl_socket_drop_membership(nl_sock, mcid))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
|
||||
int nl_subscribe_thermal(struct nl_sock *nl_sock, struct nl_cb *nl_cb,
|
||||
const char *group)
|
||||
{
|
||||
int mcid;
|
||||
|
||||
mcid = nl_get_multicast_id(nl_sock, nl_cb, THERMAL_GENL_FAMILY_NAME,
|
||||
group);
|
||||
if (mcid < 0)
|
||||
return THERMAL_ERROR;
|
||||
|
||||
if (nl_socket_add_membership(nl_sock, mcid))
|
||||
return THERMAL_ERROR;
|
||||
|
||||
return THERMAL_SUCCESS;
|
||||
}
|
||||
46
tools/lib/thermal/thermal_nl.h
Normal file
46
tools/lib/thermal/thermal_nl.h
Normal file
@ -0,0 +1,46 @@
|
||||
/* SPDX-License-Identifier: LGPL-2.1+ */
|
||||
/* Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org> */
|
||||
#ifndef __THERMAL_H
|
||||
#define __THERMAL_H
|
||||
|
||||
#include <netlink/netlink.h>
|
||||
#include <netlink/genl/genl.h>
|
||||
#include <netlink/genl/mngt.h>
|
||||
#include <netlink/genl/ctrl.h>
|
||||
|
||||
struct thermal_handler {
|
||||
int done;
|
||||
int error;
|
||||
struct thermal_ops *ops;
|
||||
struct nl_msg *msg;
|
||||
struct nl_sock *sk_event;
|
||||
struct nl_sock *sk_sampling;
|
||||
struct nl_sock *sk_cmd;
|
||||
struct nl_cb *cb_cmd;
|
||||
struct nl_cb *cb_event;
|
||||
struct nl_cb *cb_sampling;
|
||||
};
|
||||
|
||||
struct thermal_handler_param {
|
||||
struct thermal_handler *th;
|
||||
void *arg;
|
||||
};
|
||||
|
||||
/*
|
||||
* Low level netlink
|
||||
*/
|
||||
extern int nl_subscribe_thermal(struct nl_sock *nl_sock, struct nl_cb *nl_cb,
|
||||
const char *group);
|
||||
|
||||
extern int nl_unsubscribe_thermal(struct nl_sock *nl_sock, struct nl_cb *nl_cb,
|
||||
const char *group);
|
||||
|
||||
extern int nl_thermal_connect(struct nl_sock **nl_sock, struct nl_cb **nl_cb);
|
||||
|
||||
extern void nl_thermal_disconnect(struct nl_sock *nl_sock, struct nl_cb *nl_cb);
|
||||
|
||||
extern int nl_send_msg(struct nl_sock *sock, struct nl_cb *nl_cb, struct nl_msg *msg,
|
||||
int (*rx_handler)(struct nl_msg *, void *),
|
||||
void *data);
|
||||
|
||||
#endif /* __THERMAL_H */
|
||||
Loading…
Reference in New Issue
Block a user