| /* Copyright 2014 The ChromiumOS Authors |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| * |
| * Test thermal engine. |
| */ |
| |
| #include "common.h" |
| #include "console.h" |
| #include "fan.h" |
| #include "hooks.h" |
| #include "host_command.h" |
| #include "temp_sensor.h" |
| #include "test_util.h" |
| #include "thermal.h" |
| #include "timer.h" |
| #include "util.h" |
| |
| #define FAN_RPM(fan) fans[fan].rpm |
| |
| /*****************************************************************************/ |
| /* Tests */ |
| |
| void set_thermal_control_enabled(int fan, int enable); |
| |
| static int test_fan(void) |
| { |
| /* "actual" fan speed from board/host/fan.c */ |
| extern int mock_rpm; |
| |
| sleep(2); |
| |
| /* Fans initialize disabled. */ |
| TEST_ASSERT(fan_get_rpm_actual(0) == 0); |
| |
| set_thermal_control_enabled(0, 1); |
| |
| /* |
| * fan_set_percent_needed() is normally called once a second by the |
| * thermal task, but we're not using a thermal test in this test so |
| * we can dink around with the fans without having to wait. The host |
| * implementation just sets mock_rpm to whatever it's asked for. |
| */ |
| |
| /* Off */ |
| fan_set_percent_needed(0, 0); |
| TEST_ASSERT(fan_get_rpm_actual(0) == 0); |
| fan_set_percent_needed(0, 0); |
| TEST_ASSERT(fan_get_rpm_actual(0) == 0); |
| |
| /* On, but just barely */ |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_start); |
| /* fan is above min speed now, so should be set to min */ |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_min); |
| |
| /* Full speed */ |
| fan_set_percent_needed(0, 100); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_max); |
| fan_set_percent_needed(0, 100); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_max); |
| |
| /* Slow again */ |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_min); |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_min); |
| |
| /* Off */ |
| fan_set_percent_needed(0, 0); |
| TEST_ASSERT(fan_get_rpm_actual(0) == 0); |
| fan_set_percent_needed(0, 0); |
| TEST_ASSERT(fan_get_rpm_actual(0) == 0); |
| |
| /* On, but just barely */ |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_start); |
| /* Force the mock_rpm to be slow, to simulate dragging */ |
| mock_rpm = FAN_RPM(0)->rpm_min - 105; |
| /* It should keep trying for the start speed */ |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_start); |
| /* But we have to keep forcing the mock_rpm back down */ |
| mock_rpm = FAN_RPM(0)->rpm_min - 105; |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_start); |
| /* Now let it turn just under rpm_min. Should be okay there. */ |
| mock_rpm = FAN_RPM(0)->rpm_min - 10; |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_min); |
| /* Let it go a little faster, still okay */ |
| mock_rpm = FAN_RPM(0)->rpm_min + 10; |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_min); |
| /* But if it drops too low, it should go back to the start speed */ |
| mock_rpm = FAN_RPM(0)->rpm_min - 105; |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_start); |
| /* And then relax */ |
| fan_set_percent_needed(0, 1); |
| TEST_ASSERT(fan_get_rpm_actual(0) == FAN_RPM(0)->rpm_min); |
| |
| return EC_SUCCESS; |
| } |
| |
| /* Provide a test driver to make test easier to read. */ |
| int temp_to_rpm(int temperature_c) |
| { |
| const int temp_fan_off = C_TO_K(35); |
| const int temp_fan_max = C_TO_K(55); |
| const struct fan_step_1_1 fan_table[] = { |
| { .decreasing_temp_ratio_threshold = TEMP_TO_RATIO(35), |
| .increasing_temp_ratio_threshold = TEMP_TO_RATIO(41), |
| .rpm = 2500 }, |
| { .decreasing_temp_ratio_threshold = TEMP_TO_RATIO(37), |
| .increasing_temp_ratio_threshold = TEMP_TO_RATIO(43), |
| .rpm = 3200 }, |
| { .decreasing_temp_ratio_threshold = TEMP_TO_RATIO(42), |
| .increasing_temp_ratio_threshold = TEMP_TO_RATIO(45), |
| .rpm = 3500 }, |
| { .decreasing_temp_ratio_threshold = TEMP_TO_RATIO(44), |
| .increasing_temp_ratio_threshold = TEMP_TO_RATIO(47), |
| .rpm = 3900 }, |
| { .decreasing_temp_ratio_threshold = TEMP_TO_RATIO(46), |
| .increasing_temp_ratio_threshold = TEMP_TO_RATIO(49), |
| .rpm = 4500 }, |
| { .decreasing_temp_ratio_threshold = TEMP_TO_RATIO(48), |
| .increasing_temp_ratio_threshold = TEMP_TO_RATIO(52), |
| .rpm = 5100 }, |
| { .decreasing_temp_ratio_threshold = TEMP_TO_RATIO(51), |
| .increasing_temp_ratio_threshold = TEMP_TO_RATIO(55), |
| .rpm = 5400 }, |
| }; |
| const int num_fan_levels = ARRAY_SIZE(fan_table); |
| int temp_ratio = TEMP_TO_RATIO(temperature_c); |
| |
| int rpm = temp_ratio_to_rpm_hysteresis(fan_table, num_fan_levels, 0, |
| temp_ratio, NULL); |
| |
| fan_set_rpm_target(FAN_CH(0), rpm); |
| return rpm; |
| } |
| |
| static int test_temp_ratio_to_rpm_hysteresis(void) |
| { |
| const int ZERO = 0; |
| /* set initial value to be different so that a log message appears */ |
| fan_set_rpm_target(FAN_CH(0), 5400); |
| /* initial turn-on behavior, ramp up. @ represents fan speed; + temp */ |
| TEST_ASSERT(temp_to_rpm(30) == ZERO); /* @+. . 40 . 50 .60 */ |
| TEST_ASSERT(temp_to_rpm(30) == ZERO); /* @+. . . . . . */ |
| TEST_ASSERT(temp_to_rpm(35) == ZERO); /* @ + . . . . */ |
| TEST_ASSERT(temp_to_rpm(37) == ZERO); /* @ . + . . . . */ |
| TEST_ASSERT(temp_to_rpm(39) == ZERO); /* @ . +. . . . */ |
| TEST_ASSERT(temp_to_rpm(40) == ZERO); /* @ . + . . . */ |
| TEST_ASSERT(temp_to_rpm(41) == 2500); /* @. .+ . . . */ |
| TEST_ASSERT(temp_to_rpm(36) == 2500); /* @.+ . . . . */ |
| TEST_ASSERT(temp_to_rpm(42) == 2500); /* @. . + . . . */ |
| TEST_ASSERT(temp_to_rpm(43) == 3200); /* @ . + . . . */ |
| TEST_ASSERT(temp_to_rpm(38) == 3200); /* @ + . . . . */ |
| TEST_ASSERT(temp_to_rpm(44) == 3200); /* @ . +. . . */ |
| TEST_ASSERT(temp_to_rpm(45) == 3500); /* .@ . + . . */ |
| TEST_ASSERT(temp_to_rpm(43) == 3500); /* .@ . + . . . */ |
| TEST_ASSERT(temp_to_rpm(46) == 3500); /* .@ . .+ . . */ |
| TEST_ASSERT(temp_to_rpm(47) == 3900); /* . @ . . + . . */ |
| TEST_ASSERT(temp_to_rpm(45) == 3900); /* . @ . + . . */ |
| TEST_ASSERT(temp_to_rpm(48) == 3900); /* . @ . . + . . */ |
| TEST_ASSERT(temp_to_rpm(49) == 4500); /* . @ . . +. . */ |
| TEST_ASSERT(temp_to_rpm(47) == 4500); /* . @ . . + . . */ |
| TEST_ASSERT(temp_to_rpm(51) == 4500); /* . @ . . .+ . */ |
| TEST_ASSERT(temp_to_rpm(52) == 5100); /* . @. . . + . */ |
| TEST_ASSERT(temp_to_rpm(49) == 5100); /* . @. . +. . */ |
| TEST_ASSERT(temp_to_rpm(54) == 5100); /* . @. . . +. */ |
| TEST_ASSERT(temp_to_rpm(55) == 5400); /* . @ . . + */ |
| TEST_ASSERT(temp_to_rpm(52) == 5400); /* . @ . . + . */ |
| TEST_ASSERT(temp_to_rpm(60) == 5400); /* . @ . 50 ..+ */ |
| /* cool-down */ |
| TEST_ASSERT(temp_to_rpm(55) == 5400); /* . @ . . + */ |
| TEST_ASSERT(temp_to_rpm(52) == 5400); /* . @ . . + . */ |
| TEST_ASSERT(temp_to_rpm(51) == 5100); /* . @. . .+ . */ |
| TEST_ASSERT(temp_to_rpm(54) == 5100); /* . @. . . +. */ |
| TEST_ASSERT(temp_to_rpm(49) == 5100); /* . @. . +. . */ |
| TEST_ASSERT(temp_to_rpm(48) == 4500); /* . @ . . + . . */ |
| TEST_ASSERT(temp_to_rpm(51) == 4500); /* . @ . . .+ . */ |
| TEST_ASSERT(temp_to_rpm(47) == 4500); /* . @ . . + . . */ |
| TEST_ASSERT(temp_to_rpm(46) == 3900); /* . @ . .+ . . */ |
| TEST_ASSERT(temp_to_rpm(48) == 3900); /* . @ . . + . . */ |
| TEST_ASSERT(temp_to_rpm(45) == 3900); /* . @ . + . . */ |
| TEST_ASSERT(temp_to_rpm(44) == 3500); /* .@ . +. . . */ |
| TEST_ASSERT(temp_to_rpm(46) == 3500); /* .@ . .+ . . */ |
| TEST_ASSERT(temp_to_rpm(43) == 3500); /* .@ . + . . . */ |
| TEST_ASSERT(temp_to_rpm(42) == 3200); /* @ . + . . . */ |
| TEST_ASSERT(temp_to_rpm(44) == 3200); /* @ . +. . . */ |
| TEST_ASSERT(temp_to_rpm(38) == 3200); /* @ + . . . . */ |
| TEST_ASSERT(temp_to_rpm(37) == 2500); /* @. + . . . . */ |
| TEST_ASSERT(temp_to_rpm(42) == 2500); /* @. . + . . . */ |
| TEST_ASSERT(temp_to_rpm(36) == 2500); /* @.+ . . . . */ |
| TEST_ASSERT(temp_to_rpm(35) == ZERO); /* @ + 40 . 50 . */ |
| /* warm up again */ |
| TEST_ASSERT(temp_to_rpm(38) == ZERO); /* @ . + . . . . */ |
| /* jumping */ |
| TEST_ASSERT(temp_to_rpm(46) == 3500); /* .@ . .+ . . */ |
| TEST_ASSERT(temp_to_rpm(36) == 2500); /* @.+ . . . . */ |
| TEST_ASSERT(temp_to_rpm(35) == ZERO); /* @ + . . . . */ |
| TEST_ASSERT(temp_to_rpm(37) == ZERO); /* @ . + . . . . */ |
| TEST_ASSERT(temp_to_rpm(46) == 3500); /* .@ . .+ . . */ |
| TEST_ASSERT(temp_to_rpm(54) == 5100); /* . @. . . +. */ |
| TEST_ASSERT(temp_to_rpm(55) == 5400); /* . @ . . + */ |
| TEST_ASSERT(temp_to_rpm(60) == 5400); /* . @ . . ..+ */ |
| TEST_ASSERT(temp_to_rpm(53) == 5400); /* . @ . . + . */ |
| TEST_ASSERT(temp_to_rpm(46) == 3900); /* . @ . .+ . . */ |
| TEST_ASSERT(temp_to_rpm(30) == ZERO); /* @+. . 40 . 50 . */ |
| |
| return EC_SUCCESS; |
| } |
| |
| void run_test(int argc, const char **argv) |
| { |
| RUN_TEST(test_fan); |
| RUN_TEST(test_temp_ratio_to_rpm_hysteresis); |
| |
| test_print_result(); |
| } |
| |
| /* Doesn't do anything, but it makes this test stop intermittently covering |
| * some code in core/host/task.c:fast_forward(). |
| */ |
| void interrupt_generator(void) |
| { |
| } |
