1343044c4SJared McNeill /*- 2343044c4SJared McNeill * Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca> 3343044c4SJared McNeill * All rights reserved. 4343044c4SJared McNeill * 5343044c4SJared McNeill * Redistribution and use in source and binary forms, with or without 6343044c4SJared McNeill * modification, are permitted provided that the following conditions 7343044c4SJared McNeill * are met: 8343044c4SJared McNeill * 1. Redistributions of source code must retain the above copyright 9343044c4SJared McNeill * notice, this list of conditions and the following disclaimer. 10343044c4SJared McNeill * 2. Redistributions in binary form must reproduce the above copyright 11343044c4SJared McNeill * notice, this list of conditions and the following disclaimer in the 12343044c4SJared McNeill * documentation and/or other materials provided with the distribution. 13343044c4SJared McNeill * 14343044c4SJared McNeill * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15343044c4SJared McNeill * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16343044c4SJared McNeill * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17343044c4SJared McNeill * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18343044c4SJared McNeill * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 19343044c4SJared McNeill * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20343044c4SJared McNeill * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 21343044c4SJared McNeill * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 22343044c4SJared McNeill * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23343044c4SJared McNeill * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24343044c4SJared McNeill * SUCH DAMAGE. 25343044c4SJared McNeill * 26343044c4SJared McNeill * $FreeBSD$ 27343044c4SJared McNeill */ 28343044c4SJared McNeill 29343044c4SJared McNeill /* 30343044c4SJared McNeill * Allwinner thermal sensor controller 31343044c4SJared McNeill */ 32343044c4SJared McNeill 33343044c4SJared McNeill #include <sys/cdefs.h> 34343044c4SJared McNeill __FBSDID("$FreeBSD$"); 35343044c4SJared McNeill 36343044c4SJared McNeill #include <sys/param.h> 37343044c4SJared McNeill #include <sys/systm.h> 38343044c4SJared McNeill #include <sys/bus.h> 39343044c4SJared McNeill #include <sys/rman.h> 40343044c4SJared McNeill #include <sys/kernel.h> 41343044c4SJared McNeill #include <sys/sysctl.h> 42d69d5ab0SJared McNeill #include <sys/reboot.h> 43343044c4SJared McNeill #include <sys/module.h> 443c2b90f1SJared McNeill #include <sys/cpu.h> 452e4f9347SJared McNeill #include <sys/taskqueue.h> 46343044c4SJared McNeill #include <machine/bus.h> 47343044c4SJared McNeill 48343044c4SJared McNeill #include <dev/ofw/ofw_bus.h> 49343044c4SJared McNeill #include <dev/ofw/ofw_bus_subr.h> 50343044c4SJared McNeill 51d69d5ab0SJared McNeill #include <dev/extres/clk/clk.h> 52d69d5ab0SJared McNeill #include <dev/extres/hwreset/hwreset.h> 53d69d5ab0SJared McNeill 54343044c4SJared McNeill #include <arm/allwinner/aw_sid.h> 55343044c4SJared McNeill 563c2b90f1SJared McNeill #include "cpufreq_if.h" 573c2b90f1SJared McNeill 58343044c4SJared McNeill #define THS_CTRL0 0x00 59d69d5ab0SJared McNeill #define THS_CTRL1 0x04 60d69d5ab0SJared McNeill #define ADC_CALI_EN (1 << 17) 61343044c4SJared McNeill #define THS_CTRL2 0x40 62343044c4SJared McNeill #define SENSOR_ACQ1_SHIFT 16 63343044c4SJared McNeill #define SENSOR2_EN (1 << 2) 64343044c4SJared McNeill #define SENSOR1_EN (1 << 1) 65343044c4SJared McNeill #define SENSOR0_EN (1 << 0) 66343044c4SJared McNeill #define THS_INTC 0x44 67343044c4SJared McNeill #define THS_INTS 0x48 68d69d5ab0SJared McNeill #define THS2_DATA_IRQ_STS (1 << 10) 69d69d5ab0SJared McNeill #define THS1_DATA_IRQ_STS (1 << 9) 70d69d5ab0SJared McNeill #define THS0_DATA_IRQ_STS (1 << 8) 71d69d5ab0SJared McNeill #define SHUT_INT2_STS (1 << 6) 72d69d5ab0SJared McNeill #define SHUT_INT1_STS (1 << 5) 73d69d5ab0SJared McNeill #define SHUT_INT0_STS (1 << 4) 74d69d5ab0SJared McNeill #define ALARM_INT2_STS (1 << 2) 75d69d5ab0SJared McNeill #define ALARM_INT1_STS (1 << 1) 76d69d5ab0SJared McNeill #define ALARM_INT0_STS (1 << 0) 773c2b90f1SJared McNeill #define THS_ALARM0_CTRL 0x50 783c2b90f1SJared McNeill #define ALARM_T_HOT_MASK 0xfff 793c2b90f1SJared McNeill #define ALARM_T_HOT_SHIFT 16 803c2b90f1SJared McNeill #define ALARM_T_HYST_MASK 0xfff 813c2b90f1SJared McNeill #define ALARM_T_HYST_SHIFT 0 823c2b90f1SJared McNeill #define THS_SHUTDOWN0_CTRL 0x60 833c2b90f1SJared McNeill #define SHUT_T_HOT_MASK 0xfff 843c2b90f1SJared McNeill #define SHUT_T_HOT_SHIFT 16 85343044c4SJared McNeill #define THS_FILTER 0x70 86343044c4SJared McNeill #define THS_CALIB0 0x74 87343044c4SJared McNeill #define THS_CALIB1 0x78 88343044c4SJared McNeill #define THS_DATA0 0x80 89343044c4SJared McNeill #define THS_DATA1 0x84 90343044c4SJared McNeill #define THS_DATA2 0x88 91343044c4SJared McNeill #define DATA_MASK 0xfff 92343044c4SJared McNeill 93d69d5ab0SJared McNeill #define A83T_ADC_ACQUIRE_TIME 0x17 94d69d5ab0SJared McNeill #define A83T_FILTER 0x4 95d69d5ab0SJared McNeill #define A83T_INTC 0x1000 96d69d5ab0SJared McNeill #define A83T_TEMP_BASE 2719000 974e7f43baSJared McNeill #define A83T_TEMP_MUL 1000 98d69d5ab0SJared McNeill #define A83T_TEMP_DIV 14186 99d69d5ab0SJared McNeill #define A83T_CLK_RATE 24000000 100d69d5ab0SJared McNeill 101d69d5ab0SJared McNeill #define A64_ADC_ACQUIRE_TIME 0x190 102d69d5ab0SJared McNeill #define A64_FILTER 0x6 103d69d5ab0SJared McNeill #define A64_INTC 0x18000 104d69d5ab0SJared McNeill #define A64_TEMP_BASE 2170000 1054e7f43baSJared McNeill #define A64_TEMP_MUL 1000 106d69d5ab0SJared McNeill #define A64_TEMP_DIV 8560 107d69d5ab0SJared McNeill #define A64_CLK_RATE 4000000 108d69d5ab0SJared McNeill 1094e7f43baSJared McNeill #define H3_ADC_ACQUIRE_TIME 0x3f 1104e7f43baSJared McNeill #define H3_FILTER 0x6 1114e7f43baSJared McNeill #define H3_INTC 0x191000 1123c2b90f1SJared McNeill #define H3_TEMP_BASE 2794000 1133c2b90f1SJared McNeill #define H3_TEMP_MUL 1000 1143c2b90f1SJared McNeill #define H3_TEMP_DIV -14882 1154e7f43baSJared McNeill #define H3_CLK_RATE 4000000 1164e7f43baSJared McNeill 117d69d5ab0SJared McNeill #define TEMP_C_TO_K 273 118343044c4SJared McNeill #define SENSOR_ENABLE_ALL (SENSOR0_EN|SENSOR1_EN|SENSOR2_EN) 119d69d5ab0SJared McNeill #define SHUT_INT_ALL (SHUT_INT0_STS|SHUT_INT1_STS|SHUT_INT2_STS) 1203c2b90f1SJared McNeill #define ALARM_INT_ALL (ALARM_INT0_STS) 121343044c4SJared McNeill 122d69d5ab0SJared McNeill #define MAX_SENSORS 3 1233c2b90f1SJared McNeill #define MAX_CF_LEVELS 64 1243c2b90f1SJared McNeill 1253c2b90f1SJared McNeill #define THROTTLE_ENABLE_DEFAULT 1 1263c2b90f1SJared McNeill 1273c2b90f1SJared McNeill /* Enable thermal throttling */ 1283c2b90f1SJared McNeill static int aw_thermal_throttle_enable = THROTTLE_ENABLE_DEFAULT; 1293c2b90f1SJared McNeill TUNABLE_INT("hw.aw_thermal.throttle_enable", &aw_thermal_throttle_enable); 130343044c4SJared McNeill 131d69d5ab0SJared McNeill struct aw_thermal_sensor { 132343044c4SJared McNeill const char *name; 133343044c4SJared McNeill const char *desc; 134343044c4SJared McNeill }; 135343044c4SJared McNeill 136d69d5ab0SJared McNeill struct aw_thermal_config { 137d69d5ab0SJared McNeill struct aw_thermal_sensor sensors[MAX_SENSORS]; 138d69d5ab0SJared McNeill int nsensors; 139d69d5ab0SJared McNeill uint64_t clk_rate; 140d69d5ab0SJared McNeill uint32_t adc_acquire_time; 1413c2b90f1SJared McNeill int adc_cali_en; 142d69d5ab0SJared McNeill uint32_t filter; 143d69d5ab0SJared McNeill uint32_t intc; 1443c2b90f1SJared McNeill int (*to_temp)(uint32_t); 1454e7f43baSJared McNeill int temp_base; 1464e7f43baSJared McNeill int temp_mul; 1474e7f43baSJared McNeill int temp_div; 1483c2b90f1SJared McNeill int calib0, calib1; 1493c2b90f1SJared McNeill uint32_t calib0_mask, calib1_mask; 150d69d5ab0SJared McNeill }; 151d69d5ab0SJared McNeill 1523c2b90f1SJared McNeill static int 1533c2b90f1SJared McNeill a83t_to_temp(uint32_t val) 1543c2b90f1SJared McNeill { 1553c2b90f1SJared McNeill return ((A83T_TEMP_BASE - (val * A83T_TEMP_MUL)) / A83T_TEMP_DIV); 1563c2b90f1SJared McNeill } 1573c2b90f1SJared McNeill 158d69d5ab0SJared McNeill static const struct aw_thermal_config a83t_config = { 159d69d5ab0SJared McNeill .nsensors = 3, 160d69d5ab0SJared McNeill .sensors = { 161d69d5ab0SJared McNeill [0] = { 162d69d5ab0SJared McNeill .name = "cluster0", 163d69d5ab0SJared McNeill .desc = "CPU cluster 0 temperature", 164d69d5ab0SJared McNeill }, 165d69d5ab0SJared McNeill [1] = { 166d69d5ab0SJared McNeill .name = "cluster1", 167d69d5ab0SJared McNeill .desc = "CPU cluster 1 temperature", 168d69d5ab0SJared McNeill }, 169d69d5ab0SJared McNeill [2] = { 170d69d5ab0SJared McNeill .name = "gpu", 171d69d5ab0SJared McNeill .desc = "GPU temperature", 172d69d5ab0SJared McNeill }, 173d69d5ab0SJared McNeill }, 174d69d5ab0SJared McNeill .clk_rate = A83T_CLK_RATE, 175d69d5ab0SJared McNeill .adc_acquire_time = A83T_ADC_ACQUIRE_TIME, 1763c2b90f1SJared McNeill .adc_cali_en = 1, 177d69d5ab0SJared McNeill .filter = A83T_FILTER, 178d69d5ab0SJared McNeill .intc = A83T_INTC, 1793c2b90f1SJared McNeill .to_temp = a83t_to_temp, 1803c2b90f1SJared McNeill .calib0 = 1, 1813c2b90f1SJared McNeill .calib0_mask = 0xffffffff, 1823c2b90f1SJared McNeill .calib1 = 1, 1833c2b90f1SJared McNeill .calib1_mask = 0xffffffff, 184d69d5ab0SJared McNeill }; 185d69d5ab0SJared McNeill 1863c2b90f1SJared McNeill static int 1873c2b90f1SJared McNeill a64_to_temp(uint32_t val) 1883c2b90f1SJared McNeill { 1893c2b90f1SJared McNeill return ((A64_TEMP_BASE - (val * A64_TEMP_MUL)) / A64_TEMP_DIV); 1903c2b90f1SJared McNeill } 1913c2b90f1SJared McNeill 192d69d5ab0SJared McNeill static const struct aw_thermal_config a64_config = { 193d69d5ab0SJared McNeill .nsensors = 3, 194d69d5ab0SJared McNeill .sensors = { 195d69d5ab0SJared McNeill [0] = { 196d69d5ab0SJared McNeill .name = "cpu", 197d69d5ab0SJared McNeill .desc = "CPU temperature", 198d69d5ab0SJared McNeill }, 199d69d5ab0SJared McNeill [1] = { 200d69d5ab0SJared McNeill .name = "gpu1", 201d69d5ab0SJared McNeill .desc = "GPU temperature 1", 202d69d5ab0SJared McNeill }, 203d69d5ab0SJared McNeill [2] = { 204d69d5ab0SJared McNeill .name = "gpu2", 205d69d5ab0SJared McNeill .desc = "GPU temperature 2", 206d69d5ab0SJared McNeill }, 207d69d5ab0SJared McNeill }, 208d69d5ab0SJared McNeill .clk_rate = A64_CLK_RATE, 209d69d5ab0SJared McNeill .adc_acquire_time = A64_ADC_ACQUIRE_TIME, 210d69d5ab0SJared McNeill .filter = A64_FILTER, 211d69d5ab0SJared McNeill .intc = A64_INTC, 2123c2b90f1SJared McNeill .to_temp = a64_to_temp, 213343044c4SJared McNeill }; 214343044c4SJared McNeill 2153c2b90f1SJared McNeill static int 2163c2b90f1SJared McNeill h3_to_temp(uint32_t val) 2173c2b90f1SJared McNeill { 2183c2b90f1SJared McNeill return (((int)(val * H3_TEMP_MUL) - H3_TEMP_BASE) / H3_TEMP_DIV); 2193c2b90f1SJared McNeill } 2203c2b90f1SJared McNeill 2214e7f43baSJared McNeill static const struct aw_thermal_config h3_config = { 2224e7f43baSJared McNeill .nsensors = 1, 2234e7f43baSJared McNeill .sensors = { 2244e7f43baSJared McNeill [0] = { 2254e7f43baSJared McNeill .name = "cpu", 2264e7f43baSJared McNeill .desc = "CPU temperature", 2274e7f43baSJared McNeill }, 2284e7f43baSJared McNeill }, 2294e7f43baSJared McNeill .clk_rate = H3_CLK_RATE, 2304e7f43baSJared McNeill .adc_acquire_time = H3_ADC_ACQUIRE_TIME, 2314e7f43baSJared McNeill .filter = H3_FILTER, 2324e7f43baSJared McNeill .intc = H3_INTC, 2333c2b90f1SJared McNeill .to_temp = h3_to_temp, 2343c2b90f1SJared McNeill .calib0 = 1, 2353c2b90f1SJared McNeill .calib0_mask = 0xfff, 2364e7f43baSJared McNeill }; 2374e7f43baSJared McNeill 238343044c4SJared McNeill static struct ofw_compat_data compat_data[] = { 239d69d5ab0SJared McNeill { "allwinner,sun8i-a83t-ts", (uintptr_t)&a83t_config }, 2404e7f43baSJared McNeill { "allwinner,sun8i-h3-ts", (uintptr_t)&h3_config }, 241d69d5ab0SJared McNeill { "allwinner,sun50i-a64-ts", (uintptr_t)&a64_config }, 242343044c4SJared McNeill { NULL, (uintptr_t)NULL } 243343044c4SJared McNeill }; 244343044c4SJared McNeill 245343044c4SJared McNeill #define THS_CONF(d) \ 246343044c4SJared McNeill (void *)ofw_bus_search_compatible((d), compat_data)->ocd_data 247343044c4SJared McNeill 248343044c4SJared McNeill struct aw_thermal_softc { 2493c2b90f1SJared McNeill device_t dev; 250d69d5ab0SJared McNeill struct resource *res[2]; 251d69d5ab0SJared McNeill struct aw_thermal_config *conf; 2523c2b90f1SJared McNeill 2532e4f9347SJared McNeill struct task cf_task; 2543c2b90f1SJared McNeill int throttle; 2553c2b90f1SJared McNeill int min_freq; 2563c2b90f1SJared McNeill struct cf_level levels[MAX_CF_LEVELS]; 2573c2b90f1SJared McNeill eventhandler_tag cf_pre_tag; 258343044c4SJared McNeill }; 259343044c4SJared McNeill 260343044c4SJared McNeill static struct resource_spec aw_thermal_spec[] = { 261343044c4SJared McNeill { SYS_RES_MEMORY, 0, RF_ACTIVE }, 262d69d5ab0SJared McNeill { SYS_RES_IRQ, 0, RF_ACTIVE }, 263343044c4SJared McNeill { -1, 0 } 264343044c4SJared McNeill }; 265343044c4SJared McNeill 266d69d5ab0SJared McNeill #define RD4(sc, reg) bus_read_4((sc)->res[0], (reg)) 267d69d5ab0SJared McNeill #define WR4(sc, reg, val) bus_write_4((sc)->res[0], (reg), (val)) 268343044c4SJared McNeill 269343044c4SJared McNeill static int 270343044c4SJared McNeill aw_thermal_init(struct aw_thermal_softc *sc) 271343044c4SJared McNeill { 272343044c4SJared McNeill uint32_t calib0, calib1; 273343044c4SJared McNeill int error; 274343044c4SJared McNeill 2753c2b90f1SJared McNeill if (sc->conf->calib0 != 0 || sc->conf->calib1 != 0) { 276343044c4SJared McNeill /* Read calibration settings from SRAM */ 277343044c4SJared McNeill error = aw_sid_read_tscalib(&calib0, &calib1); 278343044c4SJared McNeill if (error != 0) 279343044c4SJared McNeill return (error); 280343044c4SJared McNeill 2813c2b90f1SJared McNeill calib0 &= sc->conf->calib0_mask; 2823c2b90f1SJared McNeill calib1 &= sc->conf->calib1_mask; 2833c2b90f1SJared McNeill 284343044c4SJared McNeill /* Write calibration settings to thermal controller */ 2853c2b90f1SJared McNeill if (sc->conf->calib0 != 0 && calib0 != 0) 286343044c4SJared McNeill WR4(sc, THS_CALIB0, calib0); 2873c2b90f1SJared McNeill if (sc->conf->calib1 != 0 && calib1 != 0) 288343044c4SJared McNeill WR4(sc, THS_CALIB1, calib1); 2894e7f43baSJared McNeill } 290343044c4SJared McNeill 291343044c4SJared McNeill /* Configure ADC acquire time (CLK_IN/(N+1)) and enable sensors */ 292d69d5ab0SJared McNeill WR4(sc, THS_CTRL1, ADC_CALI_EN); 293d69d5ab0SJared McNeill WR4(sc, THS_CTRL0, sc->conf->adc_acquire_time); 294d69d5ab0SJared McNeill WR4(sc, THS_CTRL2, sc->conf->adc_acquire_time << SENSOR_ACQ1_SHIFT); 295343044c4SJared McNeill 296343044c4SJared McNeill /* Enable average filter */ 297d69d5ab0SJared McNeill WR4(sc, THS_FILTER, sc->conf->filter); 298d69d5ab0SJared McNeill 299d69d5ab0SJared McNeill /* Enable interrupts */ 300d69d5ab0SJared McNeill WR4(sc, THS_INTS, RD4(sc, THS_INTS)); 3013c2b90f1SJared McNeill WR4(sc, THS_INTC, sc->conf->intc | SHUT_INT_ALL | ALARM_INT_ALL); 302d69d5ab0SJared McNeill 303d69d5ab0SJared McNeill /* Enable sensors */ 304d69d5ab0SJared McNeill WR4(sc, THS_CTRL2, RD4(sc, THS_CTRL2) | SENSOR_ENABLE_ALL); 305343044c4SJared McNeill 306343044c4SJared McNeill return (0); 307343044c4SJared McNeill } 308343044c4SJared McNeill 309343044c4SJared McNeill static int 310d69d5ab0SJared McNeill aw_thermal_gettemp(struct aw_thermal_softc *sc, int sensor) 311d69d5ab0SJared McNeill { 312d69d5ab0SJared McNeill uint32_t val; 313d69d5ab0SJared McNeill 314d69d5ab0SJared McNeill val = RD4(sc, THS_DATA0 + (sensor * 4)); 315d69d5ab0SJared McNeill 3163c2b90f1SJared McNeill return (sc->conf->to_temp(val) + TEMP_C_TO_K); 3173c2b90f1SJared McNeill } 3183c2b90f1SJared McNeill 3193c2b90f1SJared McNeill static int 3203c2b90f1SJared McNeill aw_thermal_getshut(struct aw_thermal_softc *sc, int sensor) 3213c2b90f1SJared McNeill { 3223c2b90f1SJared McNeill uint32_t val; 3233c2b90f1SJared McNeill 3243c2b90f1SJared McNeill val = RD4(sc, THS_SHUTDOWN0_CTRL + (sensor * 4)); 3253c2b90f1SJared McNeill val = (val >> SHUT_T_HOT_SHIFT) & SHUT_T_HOT_MASK; 3263c2b90f1SJared McNeill 3273c2b90f1SJared McNeill return (sc->conf->to_temp(val) + TEMP_C_TO_K); 3283c2b90f1SJared McNeill } 3293c2b90f1SJared McNeill 3303c2b90f1SJared McNeill static int 3313c2b90f1SJared McNeill aw_thermal_gethyst(struct aw_thermal_softc *sc, int sensor) 3323c2b90f1SJared McNeill { 3333c2b90f1SJared McNeill uint32_t val; 3343c2b90f1SJared McNeill 3353c2b90f1SJared McNeill val = RD4(sc, THS_ALARM0_CTRL + (sensor * 4)); 3363c2b90f1SJared McNeill val = (val >> ALARM_T_HYST_SHIFT) & ALARM_T_HYST_MASK; 3373c2b90f1SJared McNeill 3383c2b90f1SJared McNeill return (sc->conf->to_temp(val) + TEMP_C_TO_K); 3393c2b90f1SJared McNeill } 3403c2b90f1SJared McNeill 3413c2b90f1SJared McNeill static int 3423c2b90f1SJared McNeill aw_thermal_getalarm(struct aw_thermal_softc *sc, int sensor) 3433c2b90f1SJared McNeill { 3443c2b90f1SJared McNeill uint32_t val; 3453c2b90f1SJared McNeill 3463c2b90f1SJared McNeill val = RD4(sc, THS_ALARM0_CTRL + (sensor * 4)); 3473c2b90f1SJared McNeill val = (val >> ALARM_T_HOT_SHIFT) & ALARM_T_HOT_MASK; 3483c2b90f1SJared McNeill 3493c2b90f1SJared McNeill return (sc->conf->to_temp(val) + TEMP_C_TO_K); 350343044c4SJared McNeill } 351343044c4SJared McNeill 352343044c4SJared McNeill static int 353343044c4SJared McNeill aw_thermal_sysctl(SYSCTL_HANDLER_ARGS) 354343044c4SJared McNeill { 355343044c4SJared McNeill struct aw_thermal_softc *sc; 356d69d5ab0SJared McNeill int sensor, val; 357343044c4SJared McNeill 358343044c4SJared McNeill sc = arg1; 359343044c4SJared McNeill sensor = arg2; 360343044c4SJared McNeill 361d69d5ab0SJared McNeill val = aw_thermal_gettemp(sc, sensor); 362343044c4SJared McNeill 363343044c4SJared McNeill return sysctl_handle_opaque(oidp, &val, sizeof(val), req); 364343044c4SJared McNeill } 365343044c4SJared McNeill 366d69d5ab0SJared McNeill static void 3673c2b90f1SJared McNeill aw_thermal_throttle(struct aw_thermal_softc *sc, int enable) 3683c2b90f1SJared McNeill { 3693c2b90f1SJared McNeill device_t cf_dev; 3703c2b90f1SJared McNeill int count, error; 3713c2b90f1SJared McNeill 3723c2b90f1SJared McNeill if (enable == sc->throttle) 3733c2b90f1SJared McNeill return; 3743c2b90f1SJared McNeill 3753c2b90f1SJared McNeill if (enable != 0) { 3763c2b90f1SJared McNeill /* Set the lowest available frequency */ 3773c2b90f1SJared McNeill cf_dev = devclass_get_device(devclass_find("cpufreq"), 0); 3783c2b90f1SJared McNeill if (cf_dev == NULL) 3793c2b90f1SJared McNeill return; 3803c2b90f1SJared McNeill count = MAX_CF_LEVELS; 3813c2b90f1SJared McNeill error = CPUFREQ_LEVELS(cf_dev, sc->levels, &count); 3823c2b90f1SJared McNeill if (error != 0 || count == 0) 3833c2b90f1SJared McNeill return; 3843c2b90f1SJared McNeill sc->min_freq = sc->levels[count - 1].total_set.freq; 3853c2b90f1SJared McNeill error = CPUFREQ_SET(cf_dev, &sc->levels[count - 1], 3863c2b90f1SJared McNeill CPUFREQ_PRIO_USER); 3873c2b90f1SJared McNeill if (error != 0) 3883c2b90f1SJared McNeill return; 3893c2b90f1SJared McNeill } 3903c2b90f1SJared McNeill 3913c2b90f1SJared McNeill sc->throttle = enable; 3923c2b90f1SJared McNeill } 3933c2b90f1SJared McNeill 3943c2b90f1SJared McNeill static void 3952e4f9347SJared McNeill aw_thermal_cf_task(void *arg, int pending) 3962e4f9347SJared McNeill { 3972e4f9347SJared McNeill struct aw_thermal_softc *sc; 3982e4f9347SJared McNeill 3992e4f9347SJared McNeill sc = arg; 4002e4f9347SJared McNeill 4012e4f9347SJared McNeill aw_thermal_throttle(sc, 1); 4022e4f9347SJared McNeill } 4032e4f9347SJared McNeill 4042e4f9347SJared McNeill static void 4053c2b90f1SJared McNeill aw_thermal_cf_pre_change(void *arg, const struct cf_level *level, int *status) 4063c2b90f1SJared McNeill { 4073c2b90f1SJared McNeill struct aw_thermal_softc *sc; 4083c2b90f1SJared McNeill int temp_cur, temp_alarm; 4093c2b90f1SJared McNeill 4103c2b90f1SJared McNeill sc = arg; 4113c2b90f1SJared McNeill 4123c2b90f1SJared McNeill if (aw_thermal_throttle_enable == 0 || sc->throttle == 0 || 4133c2b90f1SJared McNeill level->total_set.freq == sc->min_freq) 4143c2b90f1SJared McNeill return; 4153c2b90f1SJared McNeill 4163c2b90f1SJared McNeill temp_cur = aw_thermal_gettemp(sc, 0); 4173c2b90f1SJared McNeill temp_alarm = aw_thermal_getalarm(sc, 0); 4183c2b90f1SJared McNeill 4193c2b90f1SJared McNeill if (temp_cur < temp_alarm) 4203c2b90f1SJared McNeill aw_thermal_throttle(sc, 0); 4213c2b90f1SJared McNeill else 4223c2b90f1SJared McNeill *status = ENXIO; 4233c2b90f1SJared McNeill } 4243c2b90f1SJared McNeill 4253c2b90f1SJared McNeill static void 426d69d5ab0SJared McNeill aw_thermal_intr(void *arg) 427d69d5ab0SJared McNeill { 428d69d5ab0SJared McNeill struct aw_thermal_softc *sc; 429d69d5ab0SJared McNeill device_t dev; 430d69d5ab0SJared McNeill uint32_t ints; 431d69d5ab0SJared McNeill 432d69d5ab0SJared McNeill dev = arg; 433d69d5ab0SJared McNeill sc = device_get_softc(dev); 434d69d5ab0SJared McNeill 435d69d5ab0SJared McNeill ints = RD4(sc, THS_INTS); 436d69d5ab0SJared McNeill WR4(sc, THS_INTS, ints); 437d69d5ab0SJared McNeill 438d69d5ab0SJared McNeill if ((ints & SHUT_INT_ALL) != 0) { 439d69d5ab0SJared McNeill device_printf(dev, 440d69d5ab0SJared McNeill "WARNING - current temperature exceeds safe limits\n"); 441d69d5ab0SJared McNeill shutdown_nice(RB_POWEROFF); 442d69d5ab0SJared McNeill } 4433c2b90f1SJared McNeill 4443c2b90f1SJared McNeill if ((ints & ALARM_INT_ALL) != 0) 4452e4f9347SJared McNeill taskqueue_enqueue(taskqueue_thread, &sc->cf_task); 446d69d5ab0SJared McNeill } 447d69d5ab0SJared McNeill 448343044c4SJared McNeill static int 449343044c4SJared McNeill aw_thermal_probe(device_t dev) 450343044c4SJared McNeill { 451343044c4SJared McNeill if (!ofw_bus_status_okay(dev)) 452343044c4SJared McNeill return (ENXIO); 453343044c4SJared McNeill 454343044c4SJared McNeill if (THS_CONF(dev) == NULL) 455343044c4SJared McNeill return (ENXIO); 456343044c4SJared McNeill 457343044c4SJared McNeill device_set_desc(dev, "Allwinner Thermal Sensor Controller"); 458343044c4SJared McNeill return (BUS_PROBE_DEFAULT); 459343044c4SJared McNeill } 460343044c4SJared McNeill 461343044c4SJared McNeill static int 462343044c4SJared McNeill aw_thermal_attach(device_t dev) 463343044c4SJared McNeill { 464343044c4SJared McNeill struct aw_thermal_softc *sc; 465d69d5ab0SJared McNeill clk_t clk_ahb, clk_ths; 466d69d5ab0SJared McNeill hwreset_t rst; 467d69d5ab0SJared McNeill int i, error; 468d69d5ab0SJared McNeill void *ih; 469343044c4SJared McNeill 470343044c4SJared McNeill sc = device_get_softc(dev); 471d69d5ab0SJared McNeill clk_ahb = clk_ths = NULL; 472d69d5ab0SJared McNeill rst = NULL; 473d69d5ab0SJared McNeill ih = NULL; 474343044c4SJared McNeill 475343044c4SJared McNeill sc->conf = THS_CONF(dev); 4762e4f9347SJared McNeill TASK_INIT(&sc->cf_task, 0, aw_thermal_cf_task, sc); 477343044c4SJared McNeill 478d69d5ab0SJared McNeill if (bus_alloc_resources(dev, aw_thermal_spec, sc->res) != 0) { 479343044c4SJared McNeill device_printf(dev, "cannot allocate resources for device\n"); 480343044c4SJared McNeill return (ENXIO); 481343044c4SJared McNeill } 482343044c4SJared McNeill 483d69d5ab0SJared McNeill if (clk_get_by_ofw_name(dev, 0, "ahb", &clk_ahb) == 0) { 484d69d5ab0SJared McNeill error = clk_enable(clk_ahb); 485d69d5ab0SJared McNeill if (error != 0) { 486d69d5ab0SJared McNeill device_printf(dev, "cannot enable ahb clock\n"); 487d69d5ab0SJared McNeill goto fail; 488d69d5ab0SJared McNeill } 489d69d5ab0SJared McNeill } 490d69d5ab0SJared McNeill if (clk_get_by_ofw_name(dev, 0, "ths", &clk_ths) == 0) { 491d69d5ab0SJared McNeill error = clk_set_freq(clk_ths, sc->conf->clk_rate, 0); 492d69d5ab0SJared McNeill if (error != 0) { 493d69d5ab0SJared McNeill device_printf(dev, "cannot set ths clock rate\n"); 494d69d5ab0SJared McNeill goto fail; 495d69d5ab0SJared McNeill } 496d69d5ab0SJared McNeill error = clk_enable(clk_ths); 497d69d5ab0SJared McNeill if (error != 0) { 498d69d5ab0SJared McNeill device_printf(dev, "cannot enable ths clock\n"); 499d69d5ab0SJared McNeill goto fail; 500d69d5ab0SJared McNeill } 501d69d5ab0SJared McNeill } 502d69d5ab0SJared McNeill if (hwreset_get_by_ofw_idx(dev, 0, 0, &rst) == 0) { 503d69d5ab0SJared McNeill error = hwreset_deassert(rst); 504d69d5ab0SJared McNeill if (error != 0) { 505d69d5ab0SJared McNeill device_printf(dev, "cannot de-assert reset\n"); 506d69d5ab0SJared McNeill goto fail; 507d69d5ab0SJared McNeill } 508d69d5ab0SJared McNeill } 509343044c4SJared McNeill 510d69d5ab0SJared McNeill error = bus_setup_intr(dev, sc->res[1], INTR_TYPE_MISC | INTR_MPSAFE, 511d69d5ab0SJared McNeill NULL, aw_thermal_intr, dev, &ih); 512d69d5ab0SJared McNeill if (error != 0) { 513d69d5ab0SJared McNeill device_printf(dev, "cannot setup interrupt handler\n"); 514d69d5ab0SJared McNeill goto fail; 515d69d5ab0SJared McNeill } 516d69d5ab0SJared McNeill 517d69d5ab0SJared McNeill if (aw_thermal_init(sc) != 0) 518d69d5ab0SJared McNeill goto fail; 519d69d5ab0SJared McNeill 520d69d5ab0SJared McNeill for (i = 0; i < sc->conf->nsensors; i++) 521343044c4SJared McNeill SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 522343044c4SJared McNeill SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 523d69d5ab0SJared McNeill OID_AUTO, sc->conf->sensors[i].name, 524343044c4SJared McNeill CTLTYPE_INT | CTLFLAG_RD, 525d69d5ab0SJared McNeill sc, i, aw_thermal_sysctl, "IK0", 526d69d5ab0SJared McNeill sc->conf->sensors[i].desc); 527343044c4SJared McNeill 5283c2b90f1SJared McNeill if (bootverbose) 5293c2b90f1SJared McNeill for (i = 0; i < sc->conf->nsensors; i++) { 5303c2b90f1SJared McNeill device_printf(dev, 5313c2b90f1SJared McNeill "#%d: alarm %dC hyst %dC shut %dC\n", i, 5323c2b90f1SJared McNeill aw_thermal_getalarm(sc, i) - TEMP_C_TO_K, 5333c2b90f1SJared McNeill aw_thermal_gethyst(sc, i) - TEMP_C_TO_K, 5343c2b90f1SJared McNeill aw_thermal_getshut(sc, i) - TEMP_C_TO_K); 5353c2b90f1SJared McNeill } 5363c2b90f1SJared McNeill 5373c2b90f1SJared McNeill sc->cf_pre_tag = EVENTHANDLER_REGISTER(cpufreq_pre_change, 5383c2b90f1SJared McNeill aw_thermal_cf_pre_change, sc, EVENTHANDLER_PRI_FIRST); 5393c2b90f1SJared McNeill 540343044c4SJared McNeill return (0); 541d69d5ab0SJared McNeill 542d69d5ab0SJared McNeill fail: 543d69d5ab0SJared McNeill if (ih != NULL) 544d69d5ab0SJared McNeill bus_teardown_intr(dev, sc->res[1], ih); 545d69d5ab0SJared McNeill if (rst != NULL) 546d69d5ab0SJared McNeill hwreset_release(rst); 547d69d5ab0SJared McNeill if (clk_ahb != NULL) 548d69d5ab0SJared McNeill clk_release(clk_ahb); 549d69d5ab0SJared McNeill if (clk_ths != NULL) 550d69d5ab0SJared McNeill clk_release(clk_ths); 551d69d5ab0SJared McNeill bus_release_resources(dev, aw_thermal_spec, sc->res); 552d69d5ab0SJared McNeill 553d69d5ab0SJared McNeill return (ENXIO); 554343044c4SJared McNeill } 555343044c4SJared McNeill 556343044c4SJared McNeill static device_method_t aw_thermal_methods[] = { 557343044c4SJared McNeill /* Device interface */ 558343044c4SJared McNeill DEVMETHOD(device_probe, aw_thermal_probe), 559343044c4SJared McNeill DEVMETHOD(device_attach, aw_thermal_attach), 560343044c4SJared McNeill 561343044c4SJared McNeill DEVMETHOD_END 562343044c4SJared McNeill }; 563343044c4SJared McNeill 564343044c4SJared McNeill static driver_t aw_thermal_driver = { 565343044c4SJared McNeill "aw_thermal", 566343044c4SJared McNeill aw_thermal_methods, 567343044c4SJared McNeill sizeof(struct aw_thermal_softc), 568343044c4SJared McNeill }; 569343044c4SJared McNeill 570343044c4SJared McNeill static devclass_t aw_thermal_devclass; 571343044c4SJared McNeill 572343044c4SJared McNeill DRIVER_MODULE(aw_thermal, simplebus, aw_thermal_driver, aw_thermal_devclass, 573343044c4SJared McNeill 0, 0); 574343044c4SJared McNeill MODULE_VERSION(aw_thermal, 1); 575