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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2007, 2008 Rui Paulo <rpaulo@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#define ASMC_MAXFANS 6
#define ASMC_MAXVAL 32 /* Maximum SMC value size */
#define ASMC_KEYLEN 4 /* SMC key name length */
#define ASMC_TYPELEN 4 /* SMC type string length */
#define ASMC_MAX_SENSORS 64 /* Max sensors per type */
/* Maximum number of auto-detected temperature sensors */
#define ASMC_TEMP_MAX 80
struct asmc_softc {
device_t sc_dev;
struct mtx sc_mtx;
int sc_nfan;
int sc_nkeys;
int16_t sms_rest_x;
int16_t sms_rest_y;
int16_t sms_rest_z;
struct sysctl_oid *sc_fan_tree[ASMC_MAXFANS+1];
struct sysctl_oid *sc_temp_tree;
struct sysctl_oid *sc_sms_tree;
struct sysctl_oid *sc_light_tree;
int sc_rid_port;
int sc_rid_irq;
struct resource *sc_ioport;
struct resource *sc_irq;
void *sc_cookie;
/* MMIO backend (T2 Macs) */
int sc_rid_mem;
struct resource *sc_iomem;
bool sc_is_mmio;
int sc_is_t2; /* T2 fan float + per-fan manual */
int sc_sms_intrtype;
struct taskqueue *sc_sms_tq;
struct task sc_sms_task;
uint8_t sc_sms_intr_works;
struct cdev *sc_kbd_bkl;
uint32_t sc_kbd_bkl_level;
#ifdef ASMC_DEBUG
/* Raw key access */
struct sysctl_oid *sc_raw_tree;
char sc_rawkey[ASMC_KEYLEN + 1];
uint8_t sc_rawval[ASMC_MAXVAL];
uint8_t sc_rawlen;
char sc_rawtype[ASMC_TYPELEN + 1];
#endif
/* Voltage/Current/Power/Light sensors */
char *sc_voltage_sensors[ASMC_MAX_SENSORS];
int sc_voltage_count;
char *sc_current_sensors[ASMC_MAX_SENSORS];
int sc_current_count;
char *sc_power_sensors[ASMC_MAX_SENSORS];
int sc_power_count;
char *sc_light_sensors[ASMC_MAX_SENSORS];
int sc_light_count;
/* Auto-detected temperature sensors */
char *sc_temp_sensors[ASMC_TEMP_MAX];
int sc_temp_count;
/* Auto-detected capabilities */
int sc_has_sms;
int sc_has_light;
int sc_light_len; /* ASMC_LIGHT_{SHORT,LONG}LEN */
int sc_has_safespeed;
int sc_has_alsl; /* ALSL interrupt source */
};
/*
* Data port.
*/
#define ASMC_DATAPORT_READ(sc) bus_read_1(sc->sc_ioport, 0x00)
#define ASMC_DATAPORT_WRITE(sc, val) \
bus_write_1(sc->sc_ioport, 0x00, val)
#define ASMC_STATUS_MASK 0x0f
/*
* Command port.
*/
#define ASMC_CMDPORT_READ(sc) bus_read_1(sc->sc_ioport, 0x04)
#define ASMC_CMDPORT_WRITE(sc, val) \
bus_write_1(sc->sc_ioport, 0x04, val)
#define ASMC_CMDREAD 0x10
#define ASMC_CMDWRITE 0x11
#define ASMC_CMDGETBYINDEX 0x12
#define ASMC_CMDGETINFO 0x13
#define ASMC_STATUS_AWAIT_DATA 0x04
#define ASMC_STATUS_DATA_READY 0x05
#define ASMC_KEYINFO_RESPLEN 6 /* getinfo: 1 len + 4 type + 1 attr */
#define ASMC_MAXRETRIES 10
/*
* Interrupt port.
*/
#define ASMC_INTPORT_READ(sc) bus_read_1(sc->sc_ioport, 0x1f)
/* Number of keys */
#define ASMC_NKEYS "#KEY" /* RO; 4 bytes */
/* Query the ASMC revision */
#define ASMC_KEY_REV "REV " /* RO: 6 bytes */
/*
* Fan control via SMC.
*/
#define ASMC_KEY_FANCOUNT "FNum" /* RO; 1 byte */
#define ASMC_KEY_FANMANUAL "FS! " /* RW; 2 bytes */
#define ASMC_KEY_FANID "F%dID" /* RO; 16 bytes */
#define ASMC_KEY_FANSPEED "F%dAc" /* RO; 2 bytes */
#define ASMC_KEY_FANMINSPEED "F%dMn" /* RW; 2 bytes */
#define ASMC_KEY_FANMAXSPEED "F%dMx" /* RO; 2 bytes */
#define ASMC_KEY_FANSAFESPEED "F%dSf" /* RO; 2 bytes */
#define ASMC_KEY_FANTARGETSPEED "F%dTg" /* RW; 2 bytes */
/*
* Sudden Motion Sensor (SMS).
*/
#define ASMC_SMS_INIT1 0xe0
#define ASMC_SMS_INIT2 0xf8
#define ASMC_KEY_SMS "MOCN" /* RW; 2 bytes */
#define ASMC_KEY_SMS_X "MO_X" /* RO; 2 bytes */
#define ASMC_KEY_SMS_Y "MO_Y" /* RO; 2 bytes */
#define ASMC_KEY_SMS_Z "MO_Z" /* RO; 2 bytes */
#define ASMC_KEY_SMS_LOW "MOLT" /* RW; 2 bytes */
#define ASMC_KEY_SMS_HIGH "MOHT" /* RW; 2 bytes */
#define ASMC_KEY_SMS_LOW_INT "MOLD" /* RW; 1 byte */
#define ASMC_KEY_SMS_HIGH_INT "MOHD" /* RW; 1 byte */
#define ASMC_KEY_SMS_FLAG "MSDW" /* RW; 1 byte */
#define ASMC_SMS_INTFF 0x60 /* Free fall Interrupt */
#define ASMC_SMS_INTHA 0x6f /* High Acceleration Interrupt */
#define ASMC_SMS_INTSH 0x80 /* Shock Interrupt */
/*
* Light Sensor.
*/
#define ASMC_ALSL_INT2A 0x2a /* Ambient Light related Interrupt */
/*
* Keyboard backlight.
*/
#define ASMC_LIGHT_SHORTLEN 6 /* ALV0 short format */
#define ASMC_LIGHT_LONGLEN 10 /* ALV0 long format (10-byte) */
#define ASMC_KEY_LIGHTLEFT "ALV0" /* RO; 6 or 10 bytes */
#define ASMC_KEY_LIGHTRIGHT "ALV1" /* RO; 6 bytes */
#define ASMC_KEY_LIGHTVALUE "LKSB" /* WO; 2 bytes */
#define ASMC_KEY_LIGHTSRC "ALSL" /* RO; ambient light source */
#define ASMC_KEY_FANSAFESPEED0 "F0Sf" /* RO; 2 bytes */
/*
* Sleep Indicator LED (SIL).
*
* MSLD controls the duty cycle of the front-panel sleep indicator LED.
* 0x00 = LED at idle brightness, 0xff = LED fully off.
* MSLS is the SIL state latch — must be written to 0x01 before MSLD
* can re-enable the LED after it has been turned off.
*
* Protocol: OFF = write MSLD 0xff
* ON = write MSLS 0x01, then write MSLD 0x01
*
* Present on all Intel Macs with a sleep indicator (laptops + Mac Mini).
*/
#define ASMC_KEY_MSLD "MSLD" /* RW; 1 byte, SIL duty */
#define ASMC_KEY_MSLS "MSLS" /* RW; 1 byte, SIL state latch */
/*
* Auto power-on after AC power loss (AUPO).
* When set, the machine boots automatically when AC power is restored
* after an unclean power loss. This is NOT Wake-on-LAN.
*/
#define ASMC_KEY_AUPO "AUPO" /* RW; 1 byte */
/*
* Interrupt keys.
*/
#define ASMC_KEY_INTOK "NTOK" /* WO; 1 byte */
/*
* System State Machine / diagnostics keys.
*
* MSSD - Mac System Shutdown cause (last shutdown reason code)
* MSSP - Mac System SleeP cause (last sleep reason code)
* MSAL - Mac System ALarm (thermal subsystem status bitmap)
* MSPS - Mac System Power State (current power state index)
* CLKT - CLocK Time (seconds since midnight, SMC RTC)
* MSTS - Mac System sTate/Status (SSM state; 0 = S0 awake)
*/
#define ASMC_KEY_CLKT "CLKT" /* RO; 4 bytes ui32 BE */
#define ASMC_KEY_MSSD "MSSD" /* RO; 1 byte si8 */
#define ASMC_KEY_MSSP "MSSP" /* RO; 1 byte si8 */
#define ASMC_KEY_MSAL "MSAL" /* RO; 1 byte hex_ */
#define ASMC_KEY_MSPS "MSPS" /* RO; 1 or 2 bytes hex_ */
#define ASMC_KEY_MSTS "MSTS" /* RO; 1 byte ui8 */
#define ASMC_MSAL_TSS 0x01 /* TSS running */
#define ASMC_MSAL_THERM_VALID 0x02 /* thermal calibration valid */
#define ASMC_MSAL_CALIB_VALID 0x08 /* I/P calibration valid */
#define ASMC_MSAL_PROCHOT 0x40 /* Prochot enabled */
#define ASMC_MSAL_PLIMITS 0x80 /* plimits enabled */
/*
* Board identity keys.
*
* RPlt - board platform identifier (e.g. "Mac-XXXX")
* RGEN - security chip generation (3 = T2)
*/
#define ASMC_KEY_RPLT "RPlt" /* RO; 8 bytes ch8* */
#define ASMC_KEY_RGEN "RGEN" /* RO; 1 byte ui8 */
#define ASMC_RPLT_MAXLEN 8 /* RPlt key data length */
/*
* Shutdown/sleep cause codes (MSSD/MSSP values).
*
* Positive values indicate normal operation; negative values indicate
* fault conditions.
* Sources: Apple SMC firmware, VirtualSMC docs, macOS
* pmset/powermetrics output.
*/
struct asmc_cause {
int8_t code;
const char *desc; /* shutdown description */
const char *sleep_desc; /* sleep description, or NULL if same */
};
#define ASMC_CAUSE_BUFLEN 48 /* "-128 (temperature-overlimit-timeout)\0" */
static const struct asmc_cause asmc_cause_table[] = {
{ 5, "good-shutdown", "good-sleep" },
{ 3, "power-button", NULL },
{ 2, "low-battery-sleep", NULL },
{ 1, "overtemp-sleep", NULL },
{ 0, "initial", NULL },
{ -1, "health-check", NULL },
{ -2, "power-supply", NULL },
{ -3, "temperature-multisleep", NULL },
{ -4, "sensor-fan", NULL },
{ -30, "temperature-overlimit-timeout",NULL },
{ -40, "pswr-smrst", NULL }, /* power supply watchdog reset */
{ -50, "unmapped", NULL },
{ -60, "low-battery", NULL },
{ -61, "ninja-shutdown", NULL }, /* sudden unexpected power loss */
{ -62, "ninja-restart", NULL },
{ -70, "palm-rest-temperature", NULL },
{ -71, "sodimm-temperature", NULL },
{ -72, "heatpipe-temperature", NULL },
{ -74, "battery-temperature", NULL },
{ -75, "adapter-timeout", NULL },
{ -77, "manual-temperature", NULL },
{ -78, "adapter-current", NULL },
{ -79, "battery-current", NULL },
{ -82, "skin-temperature", NULL },
{ -83, "skin-temperature-sensors", NULL },
{ -84, "backup-temperature", NULL },
{ -86, "cpu-proximity-temperature", NULL },
{ -95, "cpu-temperature", NULL },
{ -100, "power-supply-temperature", NULL },
{ -101, "lcd-temperature", NULL },
{ -102, "rsm-power-fail", NULL },
{ -103, "battery-cuv", NULL }, /* cell under-voltage */
{ -127, "pmu-forced-shutdown", NULL },
{ -128, "unknown", NULL },
};
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