From: Chanwoo Choi Date: Tue, 26 Jul 2022 02:24:47 +0000 (+0900) Subject: Add hal-backend-power-emulator X-Git-Tag: submit/tizen/20220727.044628^0 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fchanges%2F79%2F278779%2F1;p=platform%2Fhal%2Fbackend%2Femulator%2Fpower-emulator.git Add hal-backend-power-emulator Change-Id: Ia6ee9e534d6fc774eb4ec27dcb5282eecc8f5021 Signed-off-by: Chanwoo Choi --- diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..5edccaa --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,39 @@ +CMAKE_MINIMUM_REQUIRED(VERSION 2.6) +PROJECT(hal-backend-power-emulator C) + +SET(LIBRARY_NAME "hal-backend-power") +SET(CMAKE_VERBOSE_MAKEFILE ON) +SET(PREFIX ${CMAKE_INSTALL_PREFIX}) +SET(HAL_LIBDIR ${CMAKE_HAL_LIBDIR_PREFIX}) +SET(HAL_LICENSEDIR ${CMAKE_HAL_LICENSEDIR_PREFIX}) + +INCLUDE(FindPkgConfig) +pkg_check_modules(pkgs REQUIRED + hal-api-common + hal-api-power +) + +FOREACH(flag ${pkgs_CFLAGS}) + SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} ${flag}") +ENDFOREACH(flag) +SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}") + +INCLUDE_DIRECTORIES(${PROJECT_SOURCE_DIR}/include) + +SET(SRCS + ${PROJECT_SOURCE_DIR}/src/${LIBRARY_NAME}.c + ${PROJECT_SOURCE_DIR}/src/sysfs.c) + +ADD_LIBRARY(${LIBRARY_NAME} SHARED ${SRCS}) +TARGET_LINK_LIBRARIES(${LIBRARY_NAME} ${pkgs_LDFLAGS} -ldl) + + +SET(CONF_FILES + ${CMAKE_CURRENT_SOURCE_DIR}/scripts/pass.json + ${CMAKE_CURRENT_SOURCE_DIR}/scripts/pass-cpu0.json + ${CMAKE_CURRENT_SOURCE_DIR}/scripts/pass-dummy.json + ${CMAKE_CURRENT_SOURCE_DIR}/scripts/pass-memory.json) +INSTALL(FILES ${CONF_FILES} DESTINATION /hal/etc/pass) +INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/scripts/pass-hal.conf DESTINATION /hal/lib/tmpfiles.d) +INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/LICENSE DESTINATION ${HAL_LICENSEDIR}/${PROJECT_NAME}) +INSTALL(TARGETS ${LIBRARY_NAME} DESTINATION ${HAL_LIBDIR} COMPONENT RuntimeLibraries) diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..247c97d --- /dev/null +++ b/LICENSE @@ -0,0 +1,203 @@ +Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. 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@@ -0,0 +1,5 @@ + + + + + diff --git a/packaging/hal-backend-power-emulator.spec b/packaging/hal-backend-power-emulator.spec new file mode 100644 index 0000000..47ae21c --- /dev/null +++ b/packaging/hal-backend-power-emulator.spec @@ -0,0 +1,62 @@ +%define version 1.1.0 +%define release 1 + +Name: hal-backend-power-emulator +Summary: Power HAL for standard linux interface +Version: %{version} +Release: %{release} +Group: System/Hardware Adaptation +License: Apache-2.0 +Source0: %{name}-%{version}.tar.gz +Source1: %{name}.manifest + +Requires(post): /sbin/ldconfig +Requires(post): /bin/systemctl +Requires(post): security-config +Requires(postun): /sbin/ldconfig +Requires(postun): /bin/systemctl +BuildRequires: cmake +BuildRequires: pkgconfig(hal-api-common) +BuildRequires: pkgconfig(hal-api-power) + +%description +PASS standard hal + +%prep +%setup -q +cp %{SOURCE1} . + +%build +%cmake . -DCMAKE_INSTALL_PREFIX=%{_prefix} \ + -DCMAKE_HAL_LIBDIR_PREFIX=%{_hal_libdir} \ + -DCMAKE_HAL_LICENSEDIR_PREFIX=%{_hal_licensedir} \ + +make %{?jobs:-j%jobs} + +%install +rm -rf %{buildroot} + +%make_install + +%post +/sbin/ldconfig +systemd-tmpfiles /hal/lib/tmpfiles.d/pass-hal.conf --create +if [ -f %{_unitdir}/pass.service ]; then + systemctl try-restart pass.service +fi + +%postun +/sbin/ldconfig +if [ -f %{_unitdir}/pass.service ]; then + systemctl try-restart pass.service +fi + +%files +%manifest %{name}.manifest +%{_hal_licensedir}/%{name}/LICENSE +%{_hal_libdir}/*.so +/hal/lib/tmpfiles.d/pass-hal.conf +%config %{_hal_sysconfdir}/pass/pass.json +%config %{_hal_sysconfdir}/pass/pass-cpu0.json +%config %{_hal_sysconfdir}/pass/pass-memory.json +%config %{_hal_sysconfdir}/pass/pass-dummy.json diff --git a/scripts/pass-cpu0.json b/scripts/pass-cpu0.json new file mode 100644 index 0000000..54ad84d --- /dev/null +++ b/scripts/pass-cpu0.json @@ -0,0 +1,34 @@ +{ + "support" : true, + "init_level" : 0, + "level_list" : + [ + { + "level" : 0, + "hotplug,number_of_minimum_cpu" : 4, + "hotplug,number_of_maximum_cpu" : 4 + }, { + "level" : 1, + "hotplug,number_of_minimum_cpu" : 1, + "hotplug,number_of_maximum_cpu" : 1 + } + ], + + "pmqos_support" : true, + "pmqos_scenario_list": + [ + { + "name" : "AppLaunch", + "target_level" : 0 + }, { + "name" : "UltraPowerSaving", + "target_level" : 1 + }, { + "name" : "Performance", + "target_level" : 0 + } + ], + + "thermal_support" : false, + "cpuhp_support" : false +} diff --git a/scripts/pass-dummy.json b/scripts/pass-dummy.json new file mode 100644 index 0000000..e2c17ca --- /dev/null +++ b/scripts/pass-dummy.json @@ -0,0 +1,14 @@ +{ + "support" : false, + "init_level" : 0, + "level_list" : + [ + { + "level" : 0 + } + ], + + "pmqos_support" : false, + "thermal_support" : false, + "cpuhp_support" : false +} diff --git a/scripts/pass-hal.conf b/scripts/pass-hal.conf new file mode 100644 index 0000000..a0cfc42 --- /dev/null +++ b/scripts/pass-hal.conf @@ -0,0 +1,50 @@ +z /sys/devices/system/cpu/*/online 0660 root system_fw - +t /sys/devices/system/cpu/*/online - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/scaling_available_governors 0440 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/scaling_available_governors - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/cpuinfo_cur_freq 0440 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/cpuinfo_cur_freq - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/cpuinfo_min_freq 0440 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/cpuinfo_min_freq - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/cpuinfo_max_freq 0440 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/cpuinfo_max_freq - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/scaling_governor 0660 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/scaling_governor - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/scaling_min_freq 0660 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/scaling_min_freq - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/scaling_max_freq 0660 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/scaling_max_freq - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/ondemand/up_threshold 0660 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/ondemand/up_threshold - - - - security.SMACK64="System::Shared" +z /sys/devices/system/cpu/*/cpufreq/ondemand/sampling_rate 0660 root system_fw - +t /sys/devices/system/cpu/*/cpufreq/ondemand/sampling_rate - - - - security.SMACK64="System::Shared" +z /sys/class/thermal/*/temp 0440 root system_fw - +t /sys/class/thermal/*/temp - - - - security.SMACK64="System::Shared" +z /sys/class/thermal/*/policy 0440 root system_fw - +t /sys/class/thermal/*/policy - - - - security.SMACK64="System::Shared" +z /sys/kernel/debug/cpufreq/*/load_table 0440 root system_fw - +t /sys/kernel/debug/cpufreq/*/load_table - - - - security.SMACK64="System::Shared" +z /sys/kernel/debug/cpufreq/*/load_table 0440 root system_fw - +t /sys/kernel/debug/cpufreq/*/load_table - - - - security.SMACK64="System::Shared" +z /sys/devices/platform/soc/*/devfreq/*/cur_freq 0440 root system_fw - +t /sys/devices/platform/soc/*/devfreq/*/cur_freq - - - - security.SMACK64="System::Shared" +z /sys/devices/platform/soc/*/devfreq/*/governor 0660 root system_fw - +t /sys/devices/platform/soc/*/devfreq/*/governor - - - - security.SMACK64="System::Shared" +z /sys/devices/platform/soc/*/devfreq/*/min_freq 0660 root system_fw - +t /sys/devices/platform/soc/*/devfreq/*/min_freq - - - - security.SMACK64="System::Shared" +z /sys/devices/platform/soc/*/devfreq/*/max_freq 0660 root system_fw - +t /sys/devices/platform/soc/*/devfreq/*/max_freq - - - - security.SMACK64="System::Shared" +z /sys/devices/platform/soc/*/devfreq/*/polling_interval 0660 root system_fw - +t /sys/devices/platform/soc/*/devfreq/*/polling_interval - - - - security.SMACK64="System::Shared" +z /sys/devices/platform/soc/*/devfreq/*/available_frequencies 0440 root system_fw - +t /sys/devices/platform/soc/*/devfreq/*/available_frequencies - - - - security.SMACK64="System::Shared" +z /sys/kernel/debug/fault_around_bytes 0660 root system_fw - +t /sys/kernel/debug/fault_around_bytes - - - - security.SMACK64="System::Shared" +z /sys/class/aml_ddr/freq 0440 root system_fw - +t /sys/class/aml_ddr/freq - - - - security.SMACK64="System::Shared" +z /sys/class/mpgpu/cur_freq 0440 root system_fw - +t /sys/class/mpgpu/cur_freq - - - - security.SMACK64="System::Shared" +z /sys/class/mpgpu/min_freq 0660 root system_fw - +t /sys/class/mpgpu/min_freq - - - - security.SMACK64="System::Shared" +z /sys/class/mpgpu/max_freq 0660 root system_fw - +t /sys/class/mpgpu/max_freq - - - - security.SMACK64="System::Shared" diff --git a/scripts/pass-memory.json b/scripts/pass-memory.json new file mode 100644 index 0000000..85f8bd8 --- /dev/null +++ b/scripts/pass-memory.json @@ -0,0 +1,33 @@ +{ + "support" : true, + "init_level" : 0, + "level_list" : + [ + { + "level" : 0, + "memory,fault_around_bytes" : 65536 + }, { + "level" : 1, + "memory,fault_around_bytes" : 4096 + } + ], + + "pmqos_support" : true, + "pmqos_scenario_list" : + [ + { + "name" : "AppLaunch", + "target_level" : 0 + }, { + "name" : "UltraPowerSaving", + "target_level" : 1 + }, { + "name" : "Performance", + "target_level" : 0 + } + ], + + "thermal_support" : false, + + "cpuhp_support" : false +} diff --git a/scripts/pass.json b/scripts/pass.json new file mode 100644 index 0000000..6178d54 --- /dev/null +++ b/scripts/pass.json @@ -0,0 +1,26 @@ +{ + "device_list" : + [ + { + "device_type" : "cpu", + "device_name" : "cpu0", + "device_config_path" : "/hal/etc/pass/pass-cpu0.json", + "thermal_device_name" : null, + "cpu,number_of_cpus" : 4, + "cpu,first_cpu" : 0, + "cpu,cpu_load_path" : null + }, { + "device_type" : "memory", + "device_name" : "memory", + "device_config_path" : "/hal/etc/pass/pass-memory.json" + }, { + "device_type" : "display", + "device_name" : "lcd", + "device_config_path" : "/hal/etc/pass/pass-dummy.json" + }, { + "device_type" : "disk", + "device_name" : "vda", + "device_config_path" : "/hal/etc/pass/pass-dummy.json" + } + ] +} diff --git a/src/hal-backend-power.c b/src/hal-backend-power.c new file mode 100644 index 0000000..2a9bd7f --- /dev/null +++ b/src/hal-backend-power.c @@ -0,0 +1,572 @@ +/* + * HAL backend for hal-api-power which is used for PASS daemon + * + * Copyright (c) 2021 Samsung Electronics Co., Ltd. + * + * Licensed under the Apache License, Version 2.0 (the License); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include +#include +#include + +#include + +#include "sysfs.h" + +#define BUFF_MAX 255 + +/************************* + * H/W Resource Defintions + */ +#define CPUFREQ_PATH_PREFIX "/sys/devices/system/cpu/" +#define CPUFREQ_CURR_GOVERNOR_PATH_SUFFIX "/cpufreq/scaling_governor" + +/* + * The cpuinfo_cur_freq indicates the actual operating CPU freqeuncy + * and scaling_cur_freq is the CPU frequency set by the CPUFREQ policy. + */ +#define CPUFREQ_CURR_FREQ_PATH_SUFFIX "/cpufreq/cpuinfo_cur_freq" +#define CPUFREQ_AVAILABLE_MIN_FREQ_PATH_SUFFIX "/cpufreq/cpuinfo_min_freq" +#define CPUFREQ_AVAILABLE_MAX_FREQ_PATH_SUFFIX "/cpufreq/cpuinfo_max_freq" +#define CPUFREQ_MIN_FREQ_PATH_SUFFIX "/cpufreq/scaling_min_freq" +#define CPUFREQ_MAX_FREQ_PATH_SUFFIX "/cpufreq/scaling_max_freq" +#define CPUFREQ_UP_THRESHOLD_PATH_SUFFIX "/cpufreq/ondemand/up_threshold" + +#define CPU_ONLINE_PATH_PREFIX "/sys/devices/system/cpu/cpu" +#define CPU_ONLINE_PATH_SUFFIX "/online" +#define CPU_ONLINE_STATE_ON 1 +#define CPU_ONLINE_STATE_OFF 0 + +#define TMU_PATH_PREFIX "/sys/class/thermal/" +#define TMU_TEMP_PATH_SUFFIX "/temp" +#define TMU_POLICY_PATH_SUFFIX "/policy" +#define TMU_MAX_TEMP_MASK 0xFFFFF + +#define FAULT_AROUND_BYTES_PATH "/sys/kernel/debug/fault_around_bytes" + +static int get_path(char *path, char *prefix, char *res_name, char *suffix) +{ + int ret; + + if (!path || !prefix || !res_name || !suffix) + return -EINVAL; + + ret = snprintf(path, PATH_MAX, "%s%s%s", prefix, res_name, suffix); + if (ret <= 0) + return -EINVAL; + + path[PATH_MAX - 1] = '\0'; + + return 0; +} + +static int __handle_value_string(int is_write, char *prefix, char *res_name, char *suffix, char *buf) +{ + char path[PATH_MAX]; + int ret; + + if (!buf) + return -EINVAL; + + ret = get_path(path, prefix, res_name, suffix); + if (ret < 0) + return ret; + + if (!!is_write) + ret = sysfs_write_str(path, buf); + else + ret = sysfs_read_str(path, buf, BUFF_MAX); + + return (ret < 0) ? ret : 0; +} + +static int get_value_string(char *prefix, char *res_name, char *suffix, char *buf) +{ + return __handle_value_string(0, prefix, res_name, suffix, buf); +} + +static int set_value_string(char *prefix, char *res_name, char *suffix, char *buf) +{ + return __handle_value_string(1, prefix, res_name, suffix, buf); +} + +static int get_value_integer(char *prefix, char *res_name, char *suffix, int *value) +{ + char path[PATH_MAX]; + int ret; + + if (!value) + return -EINVAL; + + ret = get_path(path, prefix, res_name, suffix); + if (ret < 0) + return ret; + + ret = sysfs_read_int(path, value); + if (ret < 0) + return ret; + + return 0; +} + +static int set_value_integer(char *prefix, char *res_name, char *suffix, int value) +{ + char path[PATH_MAX]; + int ret; + + ret = get_path(path, prefix, res_name, suffix); + if (ret < 0) + return ret; + + ret = sysfs_write_int(path, value); + if (ret < 0) + return ret; + + return 0; +} + +/************************************************* + * HAL backend implementation for CPU H/W Resource + */ +static int cpufreq_dvfs_get_curr_governor(char *res_name, char *governor) +{ + int ret; + + ret = get_value_string(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_CURR_GOVERNOR_PATH_SUFFIX, governor); + return (ret < 0) ? ret : 0; +} + +static int cpufreq_dvfs_set_curr_governor(char *res_name, char *governor) +{ + int ret; + + ret = set_value_string(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_CURR_GOVERNOR_PATH_SUFFIX, governor); + return (ret < 0) ? ret : 0; +} + +static int cpufreq_dvfs_get_curr_freq(char *res_name) +{ + int freq, ret; + + ret = get_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_CURR_FREQ_PATH_SUFFIX, &freq); + return (ret < 0) ? ret : freq; +} + +static int cpufreq_dvfs_get_min_freq(char *res_name) +{ + int freq, ret; + + ret = get_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_MIN_FREQ_PATH_SUFFIX, &freq); + return (ret < 0) ? ret : freq; +} + +static int cpufreq_dvfs_set_min_freq(char *res_name, int freq) +{ + int ret; + + if (freq < 0) + return -EINVAL; + + ret = set_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_MIN_FREQ_PATH_SUFFIX, freq); + return (ret < 0) ? ret : 0; +} + +static int cpufreq_dvfs_get_max_freq(char *res_name) +{ + int freq, ret; + + ret = get_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_MAX_FREQ_PATH_SUFFIX, &freq); + return (ret < 0) ? ret : freq; +} + +static int cpufreq_dvfs_set_max_freq(char *res_name, int freq) +{ + int ret; + + if (freq < 0) + return -EINVAL; + + ret = set_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_MAX_FREQ_PATH_SUFFIX, freq); + return (ret < 0) ? ret : 0; +} + +static int cpufreq_dvfs_get_available_min_freq(char *res_name) +{ + int val, ret; + + ret = get_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_AVAILABLE_MIN_FREQ_PATH_SUFFIX, &val); + return (ret < 0) ? ret : val; +} + +static int cpufreq_dvfs_get_available_max_freq(char *res_name) +{ + int val, ret; + + ret = get_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_AVAILABLE_MAX_FREQ_PATH_SUFFIX, &val); + return (ret < 0) ? ret : val; +} + +static int cpufreq_dvfs_get_up_threshold(char *res_name) +{ + int val, ret; + + ret = get_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_UP_THRESHOLD_PATH_SUFFIX, &val); + return (ret < 0) ? ret : val; +} + +static int cpufreq_dvfs_set_up_threshold(char *res_name, int up_threshold) +{ + int ret; + + if (up_threshold < 0) + return -EINVAL; + + ret = set_value_integer(CPUFREQ_PATH_PREFIX, res_name, + CPUFREQ_UP_THRESHOLD_PATH_SUFFIX, up_threshold); + return (ret < 0) ? ret : 0; +} + +static struct pass_resource_dvfs_ops cpufreq_dvfs_ops = { + .get_curr_governor = cpufreq_dvfs_get_curr_governor, + .set_curr_governor = cpufreq_dvfs_set_curr_governor, + .get_curr_freq = cpufreq_dvfs_get_curr_freq, + .get_min_freq = cpufreq_dvfs_get_min_freq, + .set_min_freq = cpufreq_dvfs_set_min_freq, + .get_max_freq = cpufreq_dvfs_get_max_freq, + .set_max_freq = cpufreq_dvfs_set_max_freq, + .get_available_min_freq = cpufreq_dvfs_get_available_min_freq, + .get_available_max_freq = cpufreq_dvfs_get_available_max_freq, + .get_up_threshold = cpufreq_dvfs_get_up_threshold, + .set_up_threshold = cpufreq_dvfs_set_up_threshold, +}; + +static int cpu_hotplug_get_online_state(char *res_name, int cpu) +{ + char path[PATH_MAX]; + int ret, online; + + if ((!res_name)) + return -EINVAL; + + snprintf(path, PATH_MAX, "%s%d%s", + CPU_ONLINE_PATH_PREFIX, + cpu, + CPU_ONLINE_PATH_SUFFIX); + + ret = sysfs_read_int(path, &online); + if (ret < 0) + return ret; + + return online; +} + +static int cpu_hotplug_set_online_state(char *res_name, int cpu, int on) +{ + char path[PATH_MAX]; + int ret; + + if ((!res_name)) + return -EINVAL; + if ((on != CPU_ONLINE_STATE_ON) && (on != CPU_ONLINE_STATE_OFF)) + return -EINVAL; + + /* + * NOTE: Exynos SoC series cannot turn off the CPU0 + * because of h/w design. To prevent the critical problem, + * if someone try to turn off the CPU0, just return without any + * opertaion. + */ + if (on == 0 && cpu == 0) { + return 0; + } + + snprintf(path, PATH_MAX, "%s%d%s", + CPU_ONLINE_PATH_PREFIX, + cpu, + CPU_ONLINE_PATH_SUFFIX); + + ret = sysfs_write_int(path, on); + if (ret < 0) + return ret; + + return 0; +} + +static struct pass_resource_hotplug_ops cpu_hotplus_ops = { + .get_online_state = cpu_hotplug_get_online_state, + .set_online_state = cpu_hotplug_set_online_state, +}; + +static int tmu_get_temp(char *res_thermal_name) +{ + int temp, ret; + + ret = get_value_integer(TMU_PATH_PREFIX, res_thermal_name, + TMU_TEMP_PATH_SUFFIX, &temp); + if (ret < 0) + return ret; + + /* + * Thermal framework provides the current temperature + * as five digits interger like 54430 when temperature is 54.430 + * degrees centigrade. But, Thermal Monitor in Tizen usually + * use two digits interger without decimal point. + * So that round temperature value. It constraints the maximume + * temperature as 1048 degrees centigrade for preventing integer + * overflow. Usually, the embedded device never over 1000 degrees + * centigrade. + */ + return (((temp & TMU_MAX_TEMP_MASK) + 500) / 1000); +} + +static int tmu_get_policy(char *res_thermal_name, char *policy) +{ + int ret; + + if (!policy) + return -EINVAL; + + ret = get_value_string(TMU_PATH_PREFIX, res_thermal_name, + TMU_POLICY_PATH_SUFFIX, policy); + return (ret < 0) ? ret : 0; +} + +static struct pass_resource_tmu_ops tmu_ops = { + .get_temp = tmu_get_temp, + .get_policy = tmu_get_policy, +}; + +/***************************************************** + * HAL backend implementation for BUS/GPU H/W Resource + */ + +static int bus_dvfs_get_curr_freq(char *res_name) +{ + char buf[BUFF_MAX + 1]; + char unit[BUFF_MAX + 1]; + int ret, freq; + + ret = sysfs_read_str("/sys/class/aml_ddr/freq", buf, BUFF_MAX); + if (ret < 0) + return ret; + + sscanf(buf, "%d %s", &freq, unit); + + return (freq * 1000); +} + +static int gpu_freq_table[] = { + 400000, + 400000, + 500000, + 666000, + 800000, +}; + +static int gpu_dvfs_get_min_freq(char *res_name) +{ + int freq, ret; + + ret = sysfs_read_int("/sys/class/mpgpu/min_freq", &freq); + if (ret < 0) + return ret; + return (ret < 0) ? ret : (gpu_freq_table[freq]); +} + +static int gpu_dvfs_get_max_freq(char *res_name) +{ + int freq, ret; + + ret = sysfs_read_int("/sys/class/mpgpu/max_freq", &freq); + if (ret < 0) + return ret; + return (ret < 0) ? ret : gpu_freq_table[freq]; +} + +static int gpu_dvfs_get_curr_freq(char *res_name) +{ + int freq, ret; + + ret = sysfs_read_int("/sys/class/mpgpu/cur_freq", &freq); + if (ret < 0) + return ret; + return (ret < 0) ? ret : (freq * 1000); +} + +static struct pass_resource_dvfs_ops bus_dvfs_ops = { + .get_curr_freq = bus_dvfs_get_curr_freq, + .get_min_freq = bus_dvfs_get_curr_freq, + .get_max_freq = bus_dvfs_get_curr_freq, +}; + +static struct pass_resource_dvfs_ops gpu_dvfs_ops = { + .get_curr_freq = gpu_dvfs_get_curr_freq, + .get_min_freq = gpu_dvfs_get_min_freq, + .get_max_freq = gpu_dvfs_get_max_freq, +}; + +/**************************************************** + * HAL backend implementation for Memory H/W Resource + */ +static int memory_get_fault_around_bytes(char *res_name) +{ + int ret, fault_around_bytes; + + if (!res_name) + return -EINVAL; + + ret = sysfs_read_int(FAULT_AROUND_BYTES_PATH, &fault_around_bytes); + if (ret < 0) + return ret; + + return fault_around_bytes; +} + +static int memory_set_fault_around_bytes(char *res_name, + int fault_around_bytes) +{ + int ret; + + if ((!res_name) || (fault_around_bytes <= 0)) + return -EINVAL; + + ret = sysfs_write_int(FAULT_AROUND_BYTES_PATH, fault_around_bytes); + if (ret < 0) + return ret; + + return 0; +} + +/************************ + * HAL backend power data + */ +static int power_init(void **data) +{ + hal_backend_power_funcs *power_funcs = NULL; + struct pass_resource_cpu *cpu = NULL; + struct pass_resource_bus *bus = NULL; + struct pass_resource_gpu *gpu = NULL; + struct pass_resource_memory *memory = NULL; + int ret; + + /* Allocate memory */ + power_funcs = calloc(1, sizeof(hal_backend_power_funcs)); + if (!power_funcs) + return -ENOMEM; + + cpu = calloc(1, sizeof(struct pass_resource_cpu)); + if (!cpu) { + ret = -ENOMEM; + goto err_funcs; + } + + bus = calloc(1, sizeof(struct pass_resource_bus)); + if (!bus) { + ret = -ENOMEM; + goto err_cpu; + } + + gpu = calloc(1, sizeof(struct pass_resource_gpu)); + if (!gpu) { + ret = -ENOMEM; + goto err_bus; + } + + memory = calloc(1, sizeof(struct pass_resource_memory)); + if (!memory) { + ret = -ENOMEM; + goto err_gpu; + } + + /* Initialize each h/w resource */ + cpu->dvfs = cpufreq_dvfs_ops; + cpu->hotplug = cpu_hotplus_ops; + cpu->tmu = tmu_ops; + + bus->dvfs = bus_dvfs_ops; + bus->tmu = tmu_ops; + + gpu->dvfs = gpu_dvfs_ops; + gpu->tmu = tmu_ops; + + memory->get_fault_around_bytes = memory_get_fault_around_bytes; + memory->set_fault_around_bytes = memory_set_fault_around_bytes; + + /* Initialize hal_backend_power_funcs */ + power_funcs->cpu = cpu; + power_funcs->bus = bus; + power_funcs->gpu = gpu; + power_funcs->memory = memory; + + *data = (void *)power_funcs; + + return 0; + +err_gpu: + if (gpu) + free(gpu); +err_bus: + if (bus) + free(bus); +err_cpu: + if (cpu) + free(cpu); +err_funcs: + free(power_funcs); + + return ret; +} + +static int power_exit(void *data) +{ + hal_backend_power_funcs *funcs; + + if (!data) + return -EINVAL; + + funcs = (hal_backend_power_funcs *)data; + + if (funcs->cpu) + free(funcs->cpu); + if (funcs->bus) + free(funcs->bus); + if (funcs->gpu) + free(funcs->gpu); + if (funcs->memory) + free(funcs->memory); + + free(funcs); + + return 0; +} + +hal_backend hal_backend_power_data = { + .name = "hal-backend-power-vim3", + .vendor = "amlogic", + .abi_version = HAL_ABI_VERSION_TIZEN_6_5, + .init = power_init, + .exit = power_exit, +}; diff --git a/src/sysfs.c b/src/sysfs.c new file mode 100644 index 0000000..23768ce --- /dev/null +++ b/src/sysfs.c @@ -0,0 +1,129 @@ +/* + * PASS (Power Aware System Service) + * + * Copyright (c) 2017 Samsung Electronics Co., Ltd. + * + * Licensed under the Apache License, Version 2.0 (the License); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include +#include +#include +#include +#include +#include + +#include "sysfs.h" + +static int sysfs_read_buf(char *path, char *buf, int len) +{ + int r, fd; + + if ((!path) || (!buf) || (len < 0)) + return -EINVAL; + + fd = open(path, O_RDONLY); + if (fd == -1) + return -ENOENT; + + r = read(fd, buf, len); + close(fd); + + if (r < 0) + return r; + if (r > len) + return -EIO; + + buf[r] = '\0'; + + return 0; +} + +static int sysfs_write_buf(char *path, char *buf) +{ + int w, fd; + + if ((!path) || (!buf)) + return -EINVAL; + + fd = open(path, O_WRONLY); + if (fd == -1) + return -ENOENT; + + w = write(fd, buf, strlen(buf)); + close(fd); + + if (w < 0) + return w; + + return 0; +} + +int sysfs_read_int(char *path, int *val) +{ + char buf[MAX_BUF_SIZE + 1]; + int r; + + if ((!path) || (!val)) + return -EINVAL; + + r = sysfs_read_buf(path, buf, MAX_BUF_SIZE); + if (r < 0) + return r; + + *val = atoi(buf); + return 0; +} + +int sysfs_read_str(char *path, char *str, int len) +{ + int r; + + if ((!path) || (!str) || (len <= 0)) + return -EINVAL; + + r = sysfs_read_buf(path, str, len); + if (r < 0) + return r; + + return 0; +} + +int sysfs_write_int(char *path, int val) +{ + char buf[MAX_BUF_SIZE + 1]; + int w; + + if (!path) + return -EINVAL; + + snprintf(buf, MAX_BUF_SIZE, "%d", val); + w = sysfs_write_buf(path, buf); + if (w < 0) + return w; + + return 0; +} + +int sysfs_write_str(char *path, char *str) +{ + int w; + + if ((!path) || (!str)) + return -EINVAL; + + w = sysfs_write_buf(path, str); + if (w < 0) + return w; + + return 0; +} diff --git a/src/sysfs.h b/src/sysfs.h new file mode 100644 index 0000000..174804f --- /dev/null +++ b/src/sysfs.h @@ -0,0 +1,6 @@ +#define MAX_BUF_SIZE 255 + +int sysfs_read_int(char *path, int *val); +int sysfs_read_str(char *path, char *str, int len); +int sysfs_write_int(char *path, int val); +int sysfs_write_str(char *path, char *str);