fcu.c revision 222458
1213904Sandreast/*- 2213904Sandreast * Copyright (c) 2010 Andreas Tobler 3213904Sandreast * All rights reserved. 4213904Sandreast * 5213904Sandreast * Redistribution and use in source and binary forms, with or without 6213904Sandreast * modification, are permitted provided that the following conditions 7213904Sandreast * are met: 8213904Sandreast * 1. Redistributions of source code must retain the above copyright 9213904Sandreast * notice, this list of conditions and the following disclaimer. 10213904Sandreast * 2. Redistributions in binary form must reproduce the above copyright 11213904Sandreast * notice, this list of conditions and the following disclaimer in the 12213904Sandreast * documentation and/or other materials provided with the distribution. 13213904Sandreast * 14213904Sandreast * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15213904Sandreast * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16213904Sandreast * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17213904Sandreast * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18213904Sandreast * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 19213904Sandreast * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20213904Sandreast * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 21213904Sandreast * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 22213904Sandreast * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23213904Sandreast * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24213904Sandreast * SUCH DAMAGE. 25213904Sandreast */ 26213904Sandreast 27213904Sandreast#include <sys/cdefs.h> 28213904Sandreast__FBSDID("$FreeBSD: head/sys/powerpc/powermac/fcu.c 222458 2011-05-29 18:35:57Z nwhitehorn $"); 29213904Sandreast 30213904Sandreast#include <sys/param.h> 31213904Sandreast#include <sys/bus.h> 32213904Sandreast#include <sys/systm.h> 33213904Sandreast#include <sys/module.h> 34213904Sandreast#include <sys/callout.h> 35213904Sandreast#include <sys/conf.h> 36213904Sandreast#include <sys/cpu.h> 37213904Sandreast#include <sys/ctype.h> 38213904Sandreast#include <sys/kernel.h> 39213904Sandreast#include <sys/reboot.h> 40213904Sandreast#include <sys/rman.h> 41213904Sandreast#include <sys/sysctl.h> 42213904Sandreast#include <sys/limits.h> 43213904Sandreast 44213904Sandreast#include <machine/bus.h> 45213904Sandreast#include <machine/md_var.h> 46213904Sandreast 47213904Sandreast#include <dev/iicbus/iicbus.h> 48213904Sandreast#include <dev/iicbus/iiconf.h> 49213904Sandreast 50213904Sandreast#include <dev/ofw/openfirm.h> 51213904Sandreast#include <dev/ofw/ofw_bus.h> 52222458Snwhitehorn#include <powerpc/powermac/powermac_thermal.h> 53213904Sandreast 54213904Sandreast/* FCU registers 55213904Sandreast * /u3@0,f8000000/i2c@f8001000/fan@15e 56213904Sandreast */ 57213904Sandreast#define FCU_RPM_FAIL 0x0b /* fans states in bits 0<1-6>7 */ 58213904Sandreast#define FCU_RPM_AVAILABLE 0x0c 59213904Sandreast#define FCU_RPM_ACTIVE 0x0d 60213904Sandreast#define FCU_RPM_READ(x) 0x11 + (x) * 2 61213904Sandreast#define FCU_RPM_SET(x) 0x10 + (x) * 2 62213904Sandreast 63213904Sandreast#define FCU_PWM_FAIL 0x2b 64213904Sandreast#define FCU_PWM_AVAILABLE 0x2c 65213904Sandreast#define FCU_PWM_ACTIVE 0x2d 66217286Sandreast#define FCU_PWM_RPM(x) 0x31 + (x) * 2 /* Get RPM. */ 67217286Sandreast#define FCU_PWM_SGET(x) 0x30 + (x) * 2 /* Set or get PWM. */ 68213904Sandreast 69213904Sandreaststruct fcu_fan { 70222458Snwhitehorn struct pmac_fan fan; 71222458Snwhitehorn device_t dev; 72222458Snwhitehorn 73213904Sandreast int id; 74213904Sandreast enum { 75213904Sandreast FCU_FAN_RPM, 76213904Sandreast FCU_FAN_PWM 77213904Sandreast } type; 78213904Sandreast int setpoint; 79217286Sandreast int rpm; 80213904Sandreast}; 81213904Sandreast 82213904Sandreaststruct fcu_softc { 83213904Sandreast device_t sc_dev; 84213904Sandreast struct intr_config_hook enum_hook; 85213904Sandreast uint32_t sc_addr; 86213904Sandreast struct fcu_fan *sc_fans; 87213904Sandreast int sc_nfans; 88213904Sandreast}; 89213904Sandreast 90217286Sandreast/* We can read the PWM and the RPM from a PWM controlled fan. 91217286Sandreast * Offer both values via sysctl. 92217286Sandreast */ 93217286Sandreastenum { 94217286Sandreast FCU_PWM_SYSCTL_PWM = 1 << 8, 95217286Sandreast FCU_PWM_SYSCTL_RPM = 2 << 8 96217286Sandreast}; 97217286Sandreast 98213904Sandreaststatic int fcu_rpm_shift; 99213904Sandreast 100213904Sandreast/* Regular bus attachment functions */ 101213904Sandreaststatic int fcu_probe(device_t); 102213904Sandreaststatic int fcu_attach(device_t); 103213904Sandreast 104213904Sandreast/* Utility functions */ 105213904Sandreaststatic void fcu_attach_fans(device_t dev); 106213904Sandreaststatic int fcu_fill_fan_prop(device_t dev); 107222458Snwhitehornstatic int fcu_fan_set_rpm(struct fcu_fan *fan, int rpm); 108222458Snwhitehornstatic int fcu_fan_get_rpm(struct fcu_fan *fan); 109222458Snwhitehornstatic int fcu_fan_set_pwm(struct fcu_fan *fan, int pwm); 110217286Sandreaststatic int fcu_fan_get_pwm(device_t dev, struct fcu_fan *fan, int *pwm, 111217286Sandreast int *rpm); 112213904Sandreaststatic int fcu_fanrpm_sysctl(SYSCTL_HANDLER_ARGS); 113213904Sandreaststatic void fcu_start(void *xdev); 114213904Sandreaststatic int fcu_write(device_t dev, uint32_t addr, uint8_t reg, uint8_t *buf, 115213904Sandreast int len); 116213904Sandreaststatic int fcu_read_1(device_t dev, uint32_t addr, uint8_t reg, uint8_t *data); 117213904Sandreast 118213904Sandreaststatic device_method_t fcu_methods[] = { 119213904Sandreast /* Device interface */ 120213904Sandreast DEVMETHOD(device_probe, fcu_probe), 121213904Sandreast DEVMETHOD(device_attach, fcu_attach), 122213904Sandreast { 0, 0 }, 123213904Sandreast}; 124213904Sandreast 125213904Sandreaststatic driver_t fcu_driver = { 126213904Sandreast "fcu", 127213904Sandreast fcu_methods, 128213904Sandreast sizeof(struct fcu_softc) 129213904Sandreast}; 130213904Sandreast 131213904Sandreaststatic devclass_t fcu_devclass; 132213904Sandreast 133213904SandreastDRIVER_MODULE(fcu, iicbus, fcu_driver, fcu_devclass, 0, 0); 134213904SandreastMALLOC_DEFINE(M_FCU, "fcu", "FCU Sensor Information"); 135213904Sandreast 136213904Sandreaststatic int 137213904Sandreastfcu_write(device_t dev, uint32_t addr, uint8_t reg, uint8_t *buff, 138213904Sandreast int len) 139213904Sandreast{ 140213904Sandreast unsigned char buf[4]; 141213904Sandreast struct iic_msg msg[] = { 142213904Sandreast { addr, IIC_M_WR, 0, buf } 143213904Sandreast }; 144213904Sandreast 145213904Sandreast msg[0].len = len + 1; 146213904Sandreast buf[0] = reg; 147213904Sandreast memcpy(buf + 1, buff, len); 148213904Sandreast if (iicbus_transfer(dev, msg, 1) != 0) { 149213904Sandreast device_printf(dev, "iicbus write failed\n"); 150213904Sandreast return (EIO); 151213904Sandreast } 152213904Sandreast 153213904Sandreast return (0); 154213904Sandreast 155213904Sandreast} 156213904Sandreast 157213904Sandreaststatic int 158213904Sandreastfcu_read_1(device_t dev, uint32_t addr, uint8_t reg, uint8_t *data) 159213904Sandreast{ 160213904Sandreast uint8_t buf[4]; 161213904Sandreast 162213904Sandreast struct iic_msg msg[2] = { 163213904Sandreast { addr, IIC_M_WR | IIC_M_NOSTOP, 1, ® }, 164213904Sandreast { addr, IIC_M_RD, 1, buf }, 165213904Sandreast }; 166213904Sandreast 167213904Sandreast if (iicbus_transfer(dev, msg, 2) != 0) { 168213904Sandreast device_printf(dev, "iicbus read failed\n"); 169213904Sandreast return (EIO); 170213904Sandreast } 171213904Sandreast 172213904Sandreast *data = *((uint8_t*)buf); 173213904Sandreast 174213904Sandreast return (0); 175213904Sandreast} 176213904Sandreast 177213904Sandreaststatic int 178213904Sandreastfcu_probe(device_t dev) 179213904Sandreast{ 180213904Sandreast const char *name, *compatible; 181213904Sandreast struct fcu_softc *sc; 182213904Sandreast 183213904Sandreast name = ofw_bus_get_name(dev); 184213904Sandreast compatible = ofw_bus_get_compat(dev); 185213904Sandreast 186213904Sandreast if (!name) 187213904Sandreast return (ENXIO); 188213904Sandreast 189213904Sandreast if (strcmp(name, "fan") != 0 || strcmp(compatible, "fcu") != 0) 190213904Sandreast return (ENXIO); 191213904Sandreast 192213904Sandreast sc = device_get_softc(dev); 193213904Sandreast sc->sc_dev = dev; 194213904Sandreast sc->sc_addr = iicbus_get_addr(dev); 195213904Sandreast 196213904Sandreast device_set_desc(dev, "Apple Fan Control Unit"); 197213904Sandreast 198213904Sandreast return (0); 199213904Sandreast} 200213904Sandreast 201213904Sandreaststatic int 202213904Sandreastfcu_attach(device_t dev) 203213904Sandreast{ 204213904Sandreast struct fcu_softc *sc; 205213904Sandreast 206213904Sandreast sc = device_get_softc(dev); 207213904Sandreast 208213904Sandreast sc->enum_hook.ich_func = fcu_start; 209213904Sandreast sc->enum_hook.ich_arg = dev; 210213904Sandreast 211213904Sandreast /* We have to wait until interrupts are enabled. I2C read and write 212213904Sandreast * only works if the interrupts are available. 213213904Sandreast * The unin/i2c is controlled by the htpic on unin. But this is not 214213904Sandreast * the master. The openpic on mac-io is controlling the htpic. 215213904Sandreast * This one gets attached after the mac-io probing and then the 216213904Sandreast * interrupts will be available. 217213904Sandreast */ 218213904Sandreast 219213904Sandreast if (config_intrhook_establish(&sc->enum_hook) != 0) 220213904Sandreast return (ENOMEM); 221213904Sandreast 222213904Sandreast return (0); 223213904Sandreast} 224213904Sandreast 225213904Sandreaststatic void 226213904Sandreastfcu_start(void *xdev) 227213904Sandreast{ 228213904Sandreast unsigned char buf[1] = { 0xff }; 229213904Sandreast struct fcu_softc *sc; 230213904Sandreast 231213904Sandreast device_t dev = (device_t)xdev; 232213904Sandreast 233213904Sandreast sc = device_get_softc(dev); 234213904Sandreast 235213904Sandreast /* Start the fcu device. */ 236213904Sandreast fcu_write(sc->sc_dev, sc->sc_addr, 0xe, buf, 1); 237213904Sandreast fcu_write(sc->sc_dev, sc->sc_addr, 0x2e, buf, 1); 238213904Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, 0, buf); 239213904Sandreast fcu_rpm_shift = (buf[0] == 1) ? 2 : 3; 240213904Sandreast 241213904Sandreast device_printf(dev, "FCU initialized, RPM shift: %d\n", 242213904Sandreast fcu_rpm_shift); 243213904Sandreast 244213904Sandreast /* Detect and attach child devices. */ 245213904Sandreast 246213904Sandreast fcu_attach_fans(dev); 247213904Sandreast 248213904Sandreast config_intrhook_disestablish(&sc->enum_hook); 249213904Sandreast 250213904Sandreast} 251213904Sandreast 252213904Sandreaststatic int 253222458Snwhitehornfcu_fan_set_rpm(struct fcu_fan *fan, int rpm) 254213904Sandreast{ 255213904Sandreast uint8_t reg; 256213904Sandreast struct fcu_softc *sc; 257213904Sandreast unsigned char buf[2]; 258213904Sandreast 259222458Snwhitehorn sc = device_get_softc(fan->dev); 260213904Sandreast 261213904Sandreast /* Clamp to allowed range */ 262222458Snwhitehorn rpm = max(fan->fan.min_rpm, rpm); 263222458Snwhitehorn rpm = min(fan->fan.max_rpm, rpm); 264213904Sandreast 265213904Sandreast if (fan->type == FCU_FAN_RPM) { 266213904Sandreast reg = FCU_RPM_SET(fan->id); 267213904Sandreast fan->setpoint = rpm; 268213904Sandreast } else { 269222458Snwhitehorn device_printf(fan->dev, "Unknown fan type: %d\n", fan->type); 270213904Sandreast return (EIO); 271213904Sandreast } 272213904Sandreast 273217286Sandreast buf[0] = rpm >> (8 - fcu_rpm_shift); 274217286Sandreast buf[1] = rpm << fcu_rpm_shift; 275213904Sandreast 276217286Sandreast fcu_write(sc->sc_dev, sc->sc_addr, reg, buf, 2); 277217286Sandreast 278213904Sandreast return (0); 279213904Sandreast} 280213904Sandreast 281213904Sandreaststatic int 282222458Snwhitehornfcu_fan_get_rpm(struct fcu_fan *fan) 283213904Sandreast{ 284213904Sandreast uint8_t reg; 285213904Sandreast struct fcu_softc *sc; 286213904Sandreast uint8_t buff[2] = { 0, 0 }; 287213904Sandreast uint8_t active = 0, avail = 0, fail = 0; 288222458Snwhitehorn int rpm; 289213904Sandreast 290222458Snwhitehorn sc = device_get_softc(fan->dev); 291213904Sandreast 292213904Sandreast if (fan->type == FCU_FAN_RPM) { 293213904Sandreast /* Check if the fan is available. */ 294213904Sandreast reg = FCU_RPM_AVAILABLE; 295213904Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, &avail); 296213904Sandreast if ((avail & (1 << fan->id)) == 0) { 297222458Snwhitehorn device_printf(fan->dev, 298222458Snwhitehorn "RPM Fan not available ID: %d\n", fan->id); 299222458Snwhitehorn return (-1); 300213904Sandreast } 301213904Sandreast /* Check if we have a failed fan. */ 302213904Sandreast reg = FCU_RPM_FAIL; 303213904Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, &fail); 304213904Sandreast if ((fail & (1 << fan->id)) != 0) { 305222458Snwhitehorn device_printf(fan->dev, 306222458Snwhitehorn "RPM Fan failed ID: %d\n", fan->id); 307222458Snwhitehorn return (-1); 308213904Sandreast } 309213904Sandreast /* Check if fan is active. */ 310213904Sandreast reg = FCU_RPM_ACTIVE; 311213904Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, &active); 312213904Sandreast if ((active & (1 << fan->id)) == 0) { 313222458Snwhitehorn device_printf(fan->dev, "RPM Fan not active ID: %d\n", 314213904Sandreast fan->id); 315222458Snwhitehorn return (-1); 316213904Sandreast } 317213904Sandreast reg = FCU_RPM_READ(fan->id); 318217286Sandreast 319217286Sandreast } else { 320222458Snwhitehorn device_printf(fan->dev, "Unknown fan type: %d\n", fan->type); 321222458Snwhitehorn return (-1); 322217286Sandreast } 323217286Sandreast 324217286Sandreast /* It seems that we can read the fans rpm. */ 325217286Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, buff); 326217286Sandreast 327222458Snwhitehorn rpm = (buff[0] << (8 - fcu_rpm_shift)) | buff[1] >> fcu_rpm_shift; 328217286Sandreast 329222458Snwhitehorn return (rpm); 330217286Sandreast} 331217286Sandreast 332217286Sandreaststatic int 333222458Snwhitehornfcu_fan_set_pwm(struct fcu_fan *fan, int pwm) 334217286Sandreast{ 335217286Sandreast uint8_t reg; 336217286Sandreast struct fcu_softc *sc; 337217286Sandreast uint8_t buf[2]; 338217286Sandreast 339222458Snwhitehorn sc = device_get_softc(fan->dev); 340217286Sandreast 341217286Sandreast /* Clamp to allowed range */ 342222458Snwhitehorn pwm = max(fan->fan.min_rpm, pwm); 343222458Snwhitehorn pwm = min(fan->fan.max_rpm, pwm); 344217286Sandreast 345217286Sandreast if (fan->type == FCU_FAN_PWM) { 346217286Sandreast reg = FCU_PWM_SGET(fan->id); 347217286Sandreast if (pwm > 100) 348217286Sandreast pwm = 100; 349217286Sandreast if (pwm < 30) 350217286Sandreast pwm = 30; 351217286Sandreast fan->setpoint = pwm; 352217286Sandreast } else { 353222458Snwhitehorn device_printf(fan->dev, "Unknown fan type: %d\n", fan->type); 354217286Sandreast return (EIO); 355217286Sandreast } 356217286Sandreast 357217286Sandreast buf[0] = (pwm * 2550) / 1000; 358217286Sandreast 359217286Sandreast fcu_write(sc->sc_dev, sc->sc_addr, reg, buf, 1); 360217286Sandreast 361217286Sandreast return (0); 362217286Sandreast} 363217286Sandreast 364217286Sandreaststatic int 365217286Sandreastfcu_fan_get_pwm(device_t dev, struct fcu_fan *fan, int *pwm, int *rpm) 366217286Sandreast{ 367217286Sandreast uint8_t reg; 368217286Sandreast struct fcu_softc *sc; 369217286Sandreast uint8_t buf[2]; 370217286Sandreast uint8_t active = 0, avail = 0, fail = 0; 371217286Sandreast 372217286Sandreast sc = device_get_softc(dev); 373217286Sandreast 374217286Sandreast if (fan->type == FCU_FAN_PWM) { 375213904Sandreast /* Check if the fan is available. */ 376213904Sandreast reg = FCU_PWM_AVAILABLE; 377213904Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, &avail); 378213904Sandreast if ((avail & (1 << fan->id)) == 0) { 379213904Sandreast device_printf(dev, "PWM Fan not available ID: %d\n", 380213904Sandreast fan->id); 381213904Sandreast return (EIO); 382213904Sandreast } 383213904Sandreast /* Check if we have a failed fan. */ 384213904Sandreast reg = FCU_PWM_FAIL; 385213904Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, &fail); 386213904Sandreast if ((fail & (1 << fan->id)) != 0) { 387213904Sandreast device_printf(dev, "PWM Fan failed ID: %d\n", fan->id); 388213904Sandreast return (EIO); 389213904Sandreast } 390213904Sandreast /* Check if fan is active. */ 391213904Sandreast reg = FCU_PWM_ACTIVE; 392213904Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, &active); 393213904Sandreast if ((active & (1 << fan->id)) == 0) { 394213904Sandreast device_printf(dev, "PWM Fan not active ID: %d\n", 395213904Sandreast fan->id); 396213904Sandreast return (ENXIO); 397213904Sandreast } 398217286Sandreast reg = FCU_PWM_SGET(fan->id); 399213904Sandreast } else { 400213904Sandreast device_printf(dev, "Unknown fan type: %d\n", fan->type); 401213904Sandreast return (EIO); 402213904Sandreast } 403213904Sandreast 404217286Sandreast /* It seems that we can read the fans pwm. */ 405217286Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, buf); 406213904Sandreast 407217286Sandreast *pwm = (buf[0] * 1000) / 2550; 408213904Sandreast 409217286Sandreast /* Now read the rpm. */ 410217286Sandreast reg = FCU_PWM_RPM(fan->id); 411217286Sandreast fcu_read_1(sc->sc_dev, sc->sc_addr, reg, buf); 412217286Sandreast *rpm = (buf[0] << (8 - fcu_rpm_shift)) | buf[1] >> fcu_rpm_shift; 413217286Sandreast 414213904Sandreast return (0); 415213904Sandreast} 416213904Sandreast 417213904Sandreast/* 418213904Sandreast * This function returns the number of fans. If we call it the second time 419213904Sandreast * and we have allocated memory for sc->sc_fans, we fill in the properties. 420213904Sandreast */ 421213904Sandreaststatic int 422213904Sandreastfcu_fill_fan_prop(device_t dev) 423213904Sandreast{ 424213904Sandreast phandle_t child; 425213904Sandreast struct fcu_softc *sc; 426213904Sandreast u_int id[8]; 427213904Sandreast char location[96]; 428213904Sandreast char type[64]; 429213904Sandreast int i = 0, j, len = 0, prop_len, prev_len = 0; 430213904Sandreast 431213904Sandreast sc = device_get_softc(dev); 432213904Sandreast 433213904Sandreast child = ofw_bus_get_node(dev); 434213904Sandreast 435213904Sandreast /* Fill the fan location property. */ 436213904Sandreast prop_len = OF_getprop(child, "hwctrl-location", location, 437213904Sandreast sizeof(location)); 438213904Sandreast while (len < prop_len) { 439213904Sandreast if (sc->sc_fans != NULL) { 440222458Snwhitehorn strcpy(sc->sc_fans[i].fan.name, location + len); 441213904Sandreast } 442213904Sandreast prev_len = strlen(location + len) + 1; 443213904Sandreast len += prev_len; 444213904Sandreast i++; 445213904Sandreast } 446213904Sandreast if (sc->sc_fans == NULL) 447213904Sandreast return (i); 448213904Sandreast 449213904Sandreast /* Fill the fan type property. */ 450213904Sandreast len = 0; 451213904Sandreast i = 0; 452213904Sandreast prev_len = 0; 453213904Sandreast prop_len = OF_getprop(child, "hwctrl-type", type, sizeof(type)); 454213904Sandreast while (len < prop_len) { 455213904Sandreast if (strcmp(type + len, "fan-rpm") == 0) 456213904Sandreast sc->sc_fans[i].type = FCU_FAN_RPM; 457213904Sandreast else 458213904Sandreast sc->sc_fans[i].type = FCU_FAN_PWM; 459213904Sandreast prev_len = strlen(type + len) + 1; 460213904Sandreast len += prev_len; 461213904Sandreast i++; 462213904Sandreast } 463213904Sandreast 464213904Sandreast /* Fill the fan ID property. */ 465213904Sandreast prop_len = OF_getprop(child, "hwctrl-id", id, sizeof(id)); 466213904Sandreast for (j = 0; j < i; j++) 467213904Sandreast sc->sc_fans[j].id = ((id[j] >> 8) & 0x0f) % 8; 468213904Sandreast 469222458Snwhitehorn /* Fill the fan zone property. */ 470222458Snwhitehorn prop_len = OF_getprop(child, "hwctrl-zone", id, sizeof(id)); 471222458Snwhitehorn for (j = 0; j < i; j++) 472222458Snwhitehorn sc->sc_fans[j].fan.zone = id[j]; 473222458Snwhitehorn 474222458Snwhitehorn /* Finish setting up fan properties */ 475222458Snwhitehorn for (j = 0; j < i; j++) { 476222458Snwhitehorn sc->sc_fans[j].dev = sc->sc_dev; 477222458Snwhitehorn if (sc->sc_fans[j].type == FCU_FAN_RPM) { 478222458Snwhitehorn sc->sc_fans[j].fan.min_rpm = 4800 >> fcu_rpm_shift; 479222458Snwhitehorn sc->sc_fans[j].fan.max_rpm = 56000 >> fcu_rpm_shift; 480222458Snwhitehorn sc->sc_fans[j].setpoint = 481222458Snwhitehorn fcu_fan_get_rpm(&sc->sc_fans[j]); 482222458Snwhitehorn sc->sc_fans[j].fan.read = 483222458Snwhitehorn (int (*)(struct pmac_fan *))(fcu_fan_get_rpm); 484222458Snwhitehorn sc->sc_fans[j].fan.set = 485222458Snwhitehorn (int (*)(struct pmac_fan *, int))(fcu_fan_set_rpm); 486222458Snwhitehorn } else { 487222458Snwhitehorn sc->sc_fans[j].fan.min_rpm = 40; /* Percent */ 488222458Snwhitehorn sc->sc_fans[j].fan.max_rpm = 100; 489222458Snwhitehorn sc->sc_fans[j].fan.read = NULL; 490222458Snwhitehorn sc->sc_fans[j].fan.set = 491222458Snwhitehorn (int (*)(struct pmac_fan *, int))(fcu_fan_set_pwm); 492222458Snwhitehorn } 493222458Snwhitehorn sc->sc_fans[j].fan.default_rpm = sc->sc_fans[j].fan.max_rpm; 494222458Snwhitehorn } 495222458Snwhitehorn 496213904Sandreast return (i); 497213904Sandreast} 498213904Sandreast 499213904Sandreaststatic int 500213904Sandreastfcu_fanrpm_sysctl(SYSCTL_HANDLER_ARGS) 501213904Sandreast{ 502213904Sandreast device_t fcu; 503213904Sandreast struct fcu_softc *sc; 504213904Sandreast struct fcu_fan *fan; 505217286Sandreast int rpm = 0, pwm = 0, error; 506213904Sandreast 507213904Sandreast fcu = arg1; 508213904Sandreast sc = device_get_softc(fcu); 509217286Sandreast fan = &sc->sc_fans[arg2 & 0x00ff]; 510217286Sandreast if (fan->type == FCU_FAN_RPM) { 511222458Snwhitehorn rpm = fcu_fan_get_rpm(fan); 512217286Sandreast error = sysctl_handle_int(oidp, &rpm, 0, req); 513217286Sandreast } else { 514217286Sandreast fcu_fan_get_pwm(fcu, fan, &pwm, &rpm); 515213904Sandreast 516217286Sandreast switch (arg2 & 0xff00) { 517217286Sandreast case FCU_PWM_SYSCTL_PWM: 518217286Sandreast error = sysctl_handle_int(oidp, &pwm, 0, req); 519217286Sandreast break; 520217286Sandreast case FCU_PWM_SYSCTL_RPM: 521217286Sandreast error = sysctl_handle_int(oidp, &rpm, 0, req); 522217286Sandreast break; 523217286Sandreast default: 524217286Sandreast /* This should never happen */ 525217286Sandreast error = -1; 526217286Sandreast }; 527217286Sandreast } 528217286Sandreast 529217286Sandreast /* We can only read the RPM from a PWM controlled fan, so return. */ 530217286Sandreast if ((arg2 & 0xff00) == FCU_PWM_SYSCTL_RPM) 531217286Sandreast return (0); 532217286Sandreast 533213904Sandreast if (error || !req->newptr) 534213904Sandreast return (error); 535213904Sandreast 536217286Sandreast if (fan->type == FCU_FAN_RPM) 537222458Snwhitehorn return (fcu_fan_set_rpm(fan, rpm)); 538217286Sandreast else 539222458Snwhitehorn return (fcu_fan_set_pwm(fan, pwm)); 540213904Sandreast} 541213904Sandreast 542213904Sandreaststatic void 543213904Sandreastfcu_attach_fans(device_t dev) 544213904Sandreast{ 545213904Sandreast struct fcu_softc *sc; 546213904Sandreast struct sysctl_oid *oid, *fanroot_oid; 547213904Sandreast struct sysctl_ctx_list *ctx; 548213904Sandreast char sysctl_name[32]; 549213904Sandreast int i, j; 550213904Sandreast 551213904Sandreast sc = device_get_softc(dev); 552213904Sandreast 553213904Sandreast sc->sc_nfans = 0; 554213904Sandreast 555213904Sandreast /* Count the actual number of fans. */ 556213904Sandreast sc->sc_nfans = fcu_fill_fan_prop(dev); 557213904Sandreast 558213904Sandreast device_printf(dev, "%d fans detected!\n", sc->sc_nfans); 559213904Sandreast 560213904Sandreast if (sc->sc_nfans == 0) { 561213904Sandreast device_printf(dev, "WARNING: No fans detected!\n"); 562213904Sandreast return; 563213904Sandreast } 564213904Sandreast 565213904Sandreast sc->sc_fans = malloc(sc->sc_nfans * sizeof(struct fcu_fan), M_FCU, 566213904Sandreast M_WAITOK | M_ZERO); 567213904Sandreast 568213904Sandreast ctx = device_get_sysctl_ctx(dev); 569213904Sandreast fanroot_oid = SYSCTL_ADD_NODE(ctx, 570213904Sandreast SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "fans", 571213904Sandreast CTLFLAG_RD, 0, "FCU Fan Information"); 572213904Sandreast 573213904Sandreast /* Now we can fill the properties into the allocated struct. */ 574213904Sandreast sc->sc_nfans = fcu_fill_fan_prop(dev); 575213904Sandreast 576222458Snwhitehorn /* Register fans with pmac_thermal */ 577222458Snwhitehorn for (i = 0; i < sc->sc_nfans; i++) 578222458Snwhitehorn pmac_thermal_fan_register(&sc->sc_fans[i].fan); 579222458Snwhitehorn 580213904Sandreast /* Add sysctls for the fans. */ 581213904Sandreast for (i = 0; i < sc->sc_nfans; i++) { 582222458Snwhitehorn for (j = 0; j < strlen(sc->sc_fans[i].fan.name); j++) { 583222458Snwhitehorn sysctl_name[j] = tolower(sc->sc_fans[i].fan.name[j]); 584213904Sandreast if (isspace(sysctl_name[j])) 585213904Sandreast sysctl_name[j] = '_'; 586213904Sandreast } 587213904Sandreast sysctl_name[j] = 0; 588213904Sandreast 589217286Sandreast if (sc->sc_fans[i].type == FCU_FAN_RPM) { 590217286Sandreast oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(fanroot_oid), 591217286Sandreast OID_AUTO, sysctl_name, 592217286Sandreast CTLFLAG_RD, 0, "Fan Information"); 593217286Sandreast SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 594217286Sandreast "minrpm", CTLTYPE_INT | CTLFLAG_RD, 595222458Snwhitehorn &(sc->sc_fans[i].fan.min_rpm), 596222458Snwhitehorn sizeof(int), "Minimum allowed RPM"); 597217286Sandreast SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 598217286Sandreast "maxrpm", CTLTYPE_INT | CTLFLAG_RD, 599222458Snwhitehorn &(sc->sc_fans[i].fan.max_rpm), 600222458Snwhitehorn sizeof(int), "Maximum allowed RPM"); 601217286Sandreast /* I use i to pass the fan id. */ 602217286Sandreast SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 603217286Sandreast "rpm", CTLTYPE_INT | CTLFLAG_RW, dev, i, 604217286Sandreast fcu_fanrpm_sysctl, "I", "Fan RPM"); 605217286Sandreast } else { 606217286Sandreast fcu_fan_get_pwm(dev, &sc->sc_fans[i], 607217286Sandreast &sc->sc_fans[i].setpoint, 608217286Sandreast &sc->sc_fans[i].rpm); 609217286Sandreast 610217286Sandreast oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(fanroot_oid), 611217286Sandreast OID_AUTO, sysctl_name, 612217286Sandreast CTLFLAG_RD, 0, "Fan Information"); 613217286Sandreast SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 614217286Sandreast "minpwm", CTLTYPE_INT | CTLFLAG_RD, 615222458Snwhitehorn &(sc->sc_fans[i].fan.min_rpm), 616222458Snwhitehorn sizeof(int), "Minimum allowed PWM in %"); 617217286Sandreast SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 618217286Sandreast "maxpwm", CTLTYPE_INT | CTLFLAG_RD, 619222458Snwhitehorn &(sc->sc_fans[i].fan.max_rpm), 620222458Snwhitehorn sizeof(int), "Maximum allowed PWM in %"); 621217286Sandreast /* I use i to pass the fan id or'ed with the type 622217286Sandreast * of info I want to display/modify. 623217286Sandreast */ 624217286Sandreast SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 625217286Sandreast "pwm", CTLTYPE_INT | CTLFLAG_RW, dev, 626217286Sandreast FCU_PWM_SYSCTL_PWM | i, 627217286Sandreast fcu_fanrpm_sysctl, "I", "Fan PWM in %"); 628217286Sandreast SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 629217286Sandreast "rpm", CTLTYPE_INT | CTLFLAG_RD, dev, 630217286Sandreast FCU_PWM_SYSCTL_RPM | i, 631217286Sandreast fcu_fanrpm_sysctl, "I", "Fan RPM"); 632217286Sandreast } 633213904Sandreast } 634213904Sandreast 635213904Sandreast /* Dump fan location, type & RPM. */ 636213904Sandreast if (bootverbose) { 637213904Sandreast device_printf(dev, "Fans\n"); 638213904Sandreast for (i = 0; i < sc->sc_nfans; i++) { 639217286Sandreast device_printf(dev, "Location: %s type: %d ID: %d " 640222458Snwhitehorn "RPM: %d\n", sc->sc_fans[i].fan.name, 641213904Sandreast sc->sc_fans[i].type, sc->sc_fans[i].id, 642217286Sandreast (sc->sc_fans[i].type == FCU_FAN_RPM) ? 643217286Sandreast sc->sc_fans[i].setpoint : 644217286Sandreast sc->sc_fans[i].rpm ); 645213904Sandreast } 646213904Sandreast } 647213904Sandreast} 648