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/*-
* 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.
*
*/
/*
* Driver for Apple's System Management Console (SMC).
* SMC can be found on the MacBook, MacBook Pro and Mac Mini.
*
* Inspired by the Linux applesmc driver.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/asmc/asmc.c 197202 2009-09-14 21:33:00Z rpaulo $");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/taskqueue.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <contrib/dev/acpica/include/acpi.h>
#include <dev/acpica/acpivar.h>
#include <dev/asmc/asmcvar.h>
#include "opt_intr_filter.h"
/*
* Device interface.
*/
static int asmc_probe(device_t dev);
static int asmc_attach(device_t dev);
static int asmc_detach(device_t dev);
/*
* SMC functions.
*/
static int asmc_init(device_t dev);
static int asmc_command(device_t dev, uint8_t command);
static int asmc_wait(device_t dev, uint8_t val);
static int asmc_wait_ack(device_t dev, uint8_t val, int amount);
static int asmc_key_write(device_t dev, const char *key, uint8_t *buf,
uint8_t len);
static int asmc_key_read(device_t dev, const char *key, uint8_t *buf,
uint8_t);
static int asmc_fan_count(device_t dev);
static int asmc_fan_getvalue(device_t dev, const char *key, int fan);
static int asmc_temp_getvalue(device_t dev, const char *key);
static int asmc_sms_read(device_t, const char *key, int16_t *val);
static void asmc_sms_calibrate(device_t dev);
static int asmc_sms_intrfast(void *arg);
#ifdef INTR_FILTER
static void asmc_sms_handler(void *arg);
#endif
static void asmc_sms_printintr(device_t dev, uint8_t);
static void asmc_sms_task(void *arg, int pending);
#ifdef DEBUG
void asmc_dumpall(device_t);
static int asmc_key_dump(device_t, int);
#endif
/*
* Model functions.
*/
static int asmc_mb_sysctl_fanspeed(SYSCTL_HANDLER_ARGS);
static int asmc_mb_sysctl_fansafespeed(SYSCTL_HANDLER_ARGS);
static int asmc_mb_sysctl_fanminspeed(SYSCTL_HANDLER_ARGS);
static int asmc_mb_sysctl_fanmaxspeed(SYSCTL_HANDLER_ARGS);
static int asmc_mb_sysctl_fantargetspeed(SYSCTL_HANDLER_ARGS);
static int asmc_temp_sysctl(SYSCTL_HANDLER_ARGS);
static int asmc_mb_sysctl_sms_x(SYSCTL_HANDLER_ARGS);
static int asmc_mb_sysctl_sms_y(SYSCTL_HANDLER_ARGS);
static int asmc_mb_sysctl_sms_z(SYSCTL_HANDLER_ARGS);
static int asmc_mbp_sysctl_light_left(SYSCTL_HANDLER_ARGS);
static int asmc_mbp_sysctl_light_right(SYSCTL_HANDLER_ARGS);
static int asmc_mbp_sysctl_light_control(SYSCTL_HANDLER_ARGS);
struct asmc_model {
const char *smc_model; /* smbios.system.product env var. */
const char *smc_desc; /* driver description */
/* Helper functions */
int (*smc_sms_x)(SYSCTL_HANDLER_ARGS);
int (*smc_sms_y)(SYSCTL_HANDLER_ARGS);
int (*smc_sms_z)(SYSCTL_HANDLER_ARGS);
int (*smc_fan_speed)(SYSCTL_HANDLER_ARGS);
int (*smc_fan_safespeed)(SYSCTL_HANDLER_ARGS);
int (*smc_fan_minspeed)(SYSCTL_HANDLER_ARGS);
int (*smc_fan_maxspeed)(SYSCTL_HANDLER_ARGS);
int (*smc_fan_targetspeed)(SYSCTL_HANDLER_ARGS);
int (*smc_light_left)(SYSCTL_HANDLER_ARGS);
int (*smc_light_right)(SYSCTL_HANDLER_ARGS);
int (*smc_light_control)(SYSCTL_HANDLER_ARGS);
const char *smc_temps[ASMC_TEMP_MAX];
const char *smc_tempnames[ASMC_TEMP_MAX];
const char *smc_tempdescs[ASMC_TEMP_MAX];
};
static struct asmc_model *asmc_match(device_t dev);
#define ASMC_SMS_FUNCS asmc_mb_sysctl_sms_x, asmc_mb_sysctl_sms_y, \
asmc_mb_sysctl_sms_z
#define ASMC_FAN_FUNCS asmc_mb_sysctl_fanspeed, asmc_mb_sysctl_fansafespeed, \
asmc_mb_sysctl_fanminspeed, \
asmc_mb_sysctl_fanmaxspeed, \
asmc_mb_sysctl_fantargetspeed
#define ASMC_LIGHT_FUNCS asmc_mbp_sysctl_light_left, \
asmc_mbp_sysctl_light_right, \
asmc_mbp_sysctl_light_control
struct asmc_model asmc_models[] = {
{
"MacBook1,1", "Apple SMC MacBook Core Duo",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, NULL, NULL, NULL,
ASMC_MB_TEMPS, ASMC_MB_TEMPNAMES, ASMC_MB_TEMPDESCS
},
{
"MacBook2,1", "Apple SMC MacBook Core 2 Duo",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, NULL, NULL, NULL,
ASMC_MB_TEMPS, ASMC_MB_TEMPNAMES, ASMC_MB_TEMPDESCS
},
{
"MacBookPro1,1", "Apple SMC MacBook Pro Core Duo (15-inch)",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, ASMC_LIGHT_FUNCS,
ASMC_MBP_TEMPS, ASMC_MBP_TEMPNAMES, ASMC_MBP_TEMPDESCS
},
{
"MacBookPro1,2", "Apple SMC MacBook Pro Core Duo (17-inch)",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, ASMC_LIGHT_FUNCS,
ASMC_MBP_TEMPS, ASMC_MBP_TEMPNAMES, ASMC_MBP_TEMPDESCS
},
{
"MacBookPro2,1", "Apple SMC MacBook Pro Core 2 Duo (17-inch)",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, ASMC_LIGHT_FUNCS,
ASMC_MBP_TEMPS, ASMC_MBP_TEMPNAMES, ASMC_MBP_TEMPDESCS
},
{
"MacBookPro2,2", "Apple SMC MacBook Pro Core 2 Duo (15-inch)",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, ASMC_LIGHT_FUNCS,
ASMC_MBP_TEMPS, ASMC_MBP_TEMPNAMES, ASMC_MBP_TEMPDESCS
},
{
"MacBookPro3,1", "Apple SMC MacBook Pro Core 2 Duo (15-inch LED)",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, ASMC_LIGHT_FUNCS,
ASMC_MBP_TEMPS, ASMC_MBP_TEMPNAMES, ASMC_MBP_TEMPDESCS
},
{
"MacBookPro3,2", "Apple SMC MacBook Pro Core 2 Duo (17-inch HD)",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, ASMC_LIGHT_FUNCS,
ASMC_MBP_TEMPS, ASMC_MBP_TEMPNAMES, ASMC_MBP_TEMPDESCS
},
{
"MacBookPro4,1", "Apple SMC MacBook Pro Core 2 Duo (Penryn)",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, ASMC_LIGHT_FUNCS,
ASMC_MBP4_TEMPS, ASMC_MBP4_TEMPNAMES, ASMC_MBP4_TEMPDESCS
},
/* The Mac Mini has no SMS */
{
"Macmini1,1", "Apple SMC Mac Mini",
NULL, NULL, NULL,
ASMC_FAN_FUNCS,
NULL, NULL, NULL,
ASMC_MM_TEMPS, ASMC_MM_TEMPNAMES, ASMC_MM_TEMPDESCS
},
/* Idem for the MacPro */
{
"MacPro2", "Apple SMC Mac Pro (8-core)",
NULL, NULL, NULL,
ASMC_FAN_FUNCS,
NULL, NULL, NULL,
ASMC_MP_TEMPS, ASMC_MP_TEMPNAMES, ASMC_MP_TEMPDESCS
},
{
"MacBookAir1,1", "Apple SMC MacBook Air",
ASMC_SMS_FUNCS, ASMC_FAN_FUNCS, NULL, NULL, NULL,
ASMC_MBA_TEMPS, ASMC_MBA_TEMPNAMES, ASMC_MBA_TEMPDESCS
},
{ NULL, NULL }
};
#undef ASMC_SMS_FUNCS
#undef ASMC_FAN_FUNCS
#undef ASMC_LIGHT_FUNCS
/*
* Driver methods.
*/
static device_method_t asmc_methods[] = {
DEVMETHOD(device_probe, asmc_probe),
DEVMETHOD(device_attach, asmc_attach),
DEVMETHOD(device_detach, asmc_detach),
{ 0, 0 }
};
static driver_t asmc_driver = {
"asmc",
asmc_methods,
sizeof(struct asmc_softc)
};
/*
* Debugging
*/
#define _COMPONENT ACPI_OEM
ACPI_MODULE_NAME("ASMC")
#ifdef DEBUG
#define ASMC_DPRINTF(str) device_printf(dev, str)
#else
#define ASMC_DPRINTF(str)
#endif
/* NB: can't be const */
static char *asmc_ids[] = { "APP0001", NULL };
static devclass_t asmc_devclass;
DRIVER_MODULE(asmc, acpi, asmc_driver, asmc_devclass, NULL, NULL);
MODULE_DEPEND(asmc, acpi, 1, 1, 1);
static struct asmc_model *
asmc_match(device_t dev)
{
int i;
char *model;
model = getenv("smbios.system.product");
if (model == NULL)
return (NULL);
for (i = 0; asmc_models[i].smc_model; i++) {
if (!strncmp(model, asmc_models[i].smc_model, strlen(model))) {
freeenv(model);
return (&asmc_models[i]);
}
}
freeenv(model);
return (NULL);
}
static int
asmc_probe(device_t dev)
{
struct asmc_model *model;
if (resource_disabled("asmc", 0))
return (ENXIO);
if (ACPI_ID_PROBE(device_get_parent(dev), dev, asmc_ids) == NULL)
return (ENXIO);
model = asmc_match(dev);
if (!model) {
device_printf(dev, "model not recognized\n");
return (ENXIO);
}
device_set_desc(dev, model->smc_desc);
return (BUS_PROBE_DEFAULT);
}
static int
asmc_attach(device_t dev)
{
int i, j;
int ret;
char name[2];
struct asmc_softc *sc = device_get_softc(dev);
struct sysctl_ctx_list *sysctlctx;
struct sysctl_oid *sysctlnode;
struct asmc_model *model;
sc->sc_ioport = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&sc->sc_rid_port, RF_ACTIVE);
if (sc->sc_ioport == NULL) {
device_printf(dev, "unable to allocate IO port\n");
return (ENOMEM);
}
sysctlctx = device_get_sysctl_ctx(dev);
sysctlnode = device_get_sysctl_tree(dev);
model = asmc_match(dev);
mtx_init(&sc->sc_mtx, "asmc", NULL, MTX_SPIN);
sc->sc_model = model;
asmc_init(dev);
/*
* dev.asmc.n.fan.* tree.
*/
sc->sc_fan_tree[0] = SYSCTL_ADD_NODE(sysctlctx,
SYSCTL_CHILDREN(sysctlnode), OID_AUTO, "fan",
CTLFLAG_RD, 0, "Fan Root Tree");
for (i = 1; i <= sc->sc_nfan; i++) {
j = i - 1;
name[0] = '0' + j;
name[1] = 0;
sc->sc_fan_tree[i] = SYSCTL_ADD_NODE(sysctlctx,
SYSCTL_CHILDREN(sc->sc_fan_tree[0]),
OID_AUTO, name, CTLFLAG_RD, 0,
"Fan Subtree");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
OID_AUTO, "speed", CTLTYPE_INT | CTLFLAG_RD,
dev, j, model->smc_fan_speed, "I",
"Fan speed in RPM");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
OID_AUTO, "safespeed",
CTLTYPE_INT | CTLFLAG_RD,
dev, j, model->smc_fan_safespeed, "I",
"Fan safe speed in RPM");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
OID_AUTO, "minspeed",
CTLTYPE_INT | CTLFLAG_RD,
dev, j, model->smc_fan_minspeed, "I",
"Fan minimum speed in RPM");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
OID_AUTO, "maxspeed",
CTLTYPE_INT | CTLFLAG_RD,
dev, j, model->smc_fan_maxspeed, "I",
"Fan maximum speed in RPM");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
OID_AUTO, "targetspeed",
CTLTYPE_INT | CTLFLAG_RD,
dev, j, model->smc_fan_targetspeed, "I",
"Fan target speed in RPM");
}
/*
* dev.asmc.n.temp tree.
*/
sc->sc_temp_tree = SYSCTL_ADD_NODE(sysctlctx,
SYSCTL_CHILDREN(sysctlnode), OID_AUTO, "temp",
CTLFLAG_RD, 0, "Temperature sensors");
for (i = 0; model->smc_temps[i]; i++) {
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_temp_tree),
OID_AUTO, model->smc_tempnames[i],
CTLTYPE_INT | CTLFLAG_RD,
dev, i, asmc_temp_sysctl, "I",
model->smc_tempdescs[i]);
}
/*
* dev.asmc.n.light
*/
if (model->smc_light_left) {
sc->sc_light_tree = SYSCTL_ADD_NODE(sysctlctx,
SYSCTL_CHILDREN(sysctlnode), OID_AUTO, "light",
CTLFLAG_RD, 0, "Keyboard backlight sensors");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_light_tree),
OID_AUTO, "left", CTLTYPE_INT | CTLFLAG_RD,
dev, 0, model->smc_light_left, "I",
"Keyboard backlight left sensor");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_light_tree),
OID_AUTO, "right", CTLTYPE_INT | CTLFLAG_RD,
dev, 0, model->smc_light_right, "I",
"Keyboard backlight right sensor");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_light_tree),
OID_AUTO, "control",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY,
dev, 0, model->smc_light_control, "I",
"Keyboard backlight brightness control");
}
if (model->smc_sms_x == NULL)
goto nosms;
/*
* dev.asmc.n.sms tree.
*/
sc->sc_sms_tree = SYSCTL_ADD_NODE(sysctlctx,
SYSCTL_CHILDREN(sysctlnode), OID_AUTO, "sms",
CTLFLAG_RD, 0, "Sudden Motion Sensor");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_sms_tree),
OID_AUTO, "x", CTLTYPE_INT | CTLFLAG_RD,
dev, 0, model->smc_sms_x, "I",
"Sudden Motion Sensor X value");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_sms_tree),
OID_AUTO, "y", CTLTYPE_INT | CTLFLAG_RD,
dev, 0, model->smc_sms_y, "I",
"Sudden Motion Sensor Y value");
SYSCTL_ADD_PROC(sysctlctx,
SYSCTL_CHILDREN(sc->sc_sms_tree),
OID_AUTO, "z", CTLTYPE_INT | CTLFLAG_RD,
dev, 0, model->smc_sms_z, "I",
"Sudden Motion Sensor Z value");
/*
* Need a taskqueue to send devctl_notify() events
* when the SMS interrupt us.
*
* PI_REALTIME is used due to the sensitivity of the
* interrupt. An interrupt from the SMS means that the
* disk heads should be turned off as quickly as possible.
*
* We only need to do this for the non INTR_FILTER case.
*/
sc->sc_sms_tq = NULL;
#ifndef INTR_FILTER
TASK_INIT(&sc->sc_sms_task, 0, asmc_sms_task, sc);
sc->sc_sms_tq = taskqueue_create_fast("asmc_taskq", M_WAITOK,
taskqueue_thread_enqueue, &sc->sc_sms_tq);
taskqueue_start_threads(&sc->sc_sms_tq, 1, PI_REALTIME, "%s sms taskq",
device_get_nameunit(dev));
#endif
/*
* Allocate an IRQ for the SMS.
*/
sc->sc_rid_irq = 0;
sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&sc->sc_rid_irq, RF_ACTIVE);
if (sc->sc_irq == NULL) {
device_printf(dev, "unable to allocate IRQ resource\n");
ret = ENXIO;
goto err2;
}
ret = bus_setup_intr(dev, sc->sc_irq,
INTR_TYPE_MISC | INTR_MPSAFE,
#ifdef INTR_FILTER
asmc_sms_intrfast, asmc_sms_handler,
#else
asmc_sms_intrfast, NULL,
#endif
dev, &sc->sc_cookie);
if (ret) {
device_printf(dev, "unable to setup SMS IRQ\n");
goto err1;
}
nosms:
return (0);
err1:
bus_release_resource(dev, SYS_RES_IRQ, sc->sc_rid_irq, sc->sc_irq);
err2:
bus_release_resource(dev, SYS_RES_IOPORT, sc->sc_rid_port,
sc->sc_ioport);
mtx_destroy(&sc->sc_mtx);
if (sc->sc_sms_tq)
taskqueue_free(sc->sc_sms_tq);
return (ret);
}
static int
asmc_detach(device_t dev)
{
struct asmc_softc *sc = device_get_softc(dev);
if (sc->sc_sms_tq) {
taskqueue_drain(sc->sc_sms_tq, &sc->sc_sms_task);
taskqueue_free(sc->sc_sms_tq);
}
if (sc->sc_cookie)
bus_teardown_intr(dev, sc->sc_irq, sc->sc_cookie);
if (sc->sc_irq)
bus_release_resource(dev, SYS_RES_IRQ, sc->sc_rid_irq,
sc->sc_irq);
if (sc->sc_ioport)
bus_release_resource(dev, SYS_RES_IOPORT, sc->sc_rid_port,
sc->sc_ioport);
mtx_destroy(&sc->sc_mtx);
return (0);
}
#ifdef DEBUG
void asmc_dumpall(device_t dev)
{
int i;
/* XXX magic number */
for (i=0; i < 0x100; i++)
asmc_key_dump(dev, i);
}
#endif
static int
asmc_init(device_t dev)
{
struct asmc_softc *sc = device_get_softc(dev);
int i, error = 1;
uint8_t buf[4];
if (sc->sc_model->smc_sms_x == NULL)
goto nosms;
/*
* We are ready to recieve interrupts from the SMS.
*/
buf[0] = 0x01;
ASMC_DPRINTF(("intok key\n"));
asmc_key_write(dev, ASMC_KEY_INTOK, buf, 1);
DELAY(50);
/*
* Initiate the polling intervals.
*/
buf[0] = 20; /* msecs */
ASMC_DPRINTF(("low int key\n"));
asmc_key_write(dev, ASMC_KEY_SMS_LOW_INT, buf, 1);
DELAY(200);
buf[0] = 20; /* msecs */
ASMC_DPRINTF(("high int key\n"));
asmc_key_write(dev, ASMC_KEY_SMS_HIGH_INT, buf, 1);
DELAY(200);
buf[0] = 0x00;
buf[1] = 0x60;
ASMC_DPRINTF(("sms low key\n"));
asmc_key_write(dev, ASMC_KEY_SMS_LOW, buf, 2);
DELAY(200);
buf[0] = 0x01;
buf[1] = 0xc0;
ASMC_DPRINTF(("sms high key\n"));
asmc_key_write(dev, ASMC_KEY_SMS_HIGH, buf, 2);
DELAY(200);
/*
* I'm not sure what this key does, but it seems to be
* required.
*/
buf[0] = 0x01;
ASMC_DPRINTF(("sms flag key\n"));
asmc_key_write(dev, ASMC_KEY_SMS_FLAG, buf, 1);
DELAY(100);
sc->sc_sms_intr_works = 0;
/*
* Retry SMS initialization 1000 times
* (takes approx. 2 seconds in worst case)
*/
for (i = 0; i < 1000; i++) {
if (asmc_key_read(dev, ASMC_KEY_SMS, buf, 2) == 0 &&
(buf[0] == ASMC_SMS_INIT1 && buf[1] == ASMC_SMS_INIT2)) {
error = 0;
sc->sc_sms_intr_works = 1;
goto out;
}
buf[0] = ASMC_SMS_INIT1;
buf[1] = ASMC_SMS_INIT2;
ASMC_DPRINTF(("sms key\n"));
asmc_key_write(dev, ASMC_KEY_SMS, buf, 2);
DELAY(50);
}
device_printf(dev, "WARNING: Sudden Motion Sensor not initialized!\n");
out:
asmc_sms_calibrate(dev);
nosms:
sc->sc_nfan = asmc_fan_count(dev);
if (sc->sc_nfan > ASMC_MAXFANS) {
device_printf(dev, "more than %d fans were detected. Please "
"report this.\n", ASMC_MAXFANS);
sc->sc_nfan = ASMC_MAXFANS;
}
if (bootverbose) {
/*
* XXX: The number of keys is a 32 bit buffer, but
* right now Apple only uses the last 8 bit.
*/
asmc_key_read(dev, ASMC_NKEYS, buf, 4);
device_printf(dev, "number of keys: %d\n", buf[3]);
}
#ifdef DEBUG
asmc_dumpall(dev);
#endif
return (error);
}
/*
* We need to make sure that the SMC acks the byte sent.
* Just wait up to (amount * 10) ms.
*/
static int
asmc_wait_ack(device_t dev, uint8_t val, int amount)
{
struct asmc_softc *sc = device_get_softc(dev);
u_int i;
val = val & ASMC_STATUS_MASK;
for (i = 0; i < amount; i++) {
if ((ASMC_CMDPORT_READ(sc) & ASMC_STATUS_MASK) == val)
return (0);
DELAY(10);
}
return (1);
}
/*
* We need to make sure that the SMC acks the byte sent.
* Just wait up to 100 ms.
*/
static int
asmc_wait(device_t dev, uint8_t val)
{
struct asmc_softc *sc;
if (asmc_wait_ack(dev, val, 1000) == 0)
return (0);
sc = device_get_softc(dev);
val = val & ASMC_STATUS_MASK;
#ifdef DEBUG
device_printf(dev, "%s failed: 0x%x, 0x%x\n", __func__, val,
ASMC_CMDPORT_READ(sc));
#endif
return (1);
}
/*
* Send the given command, retrying up to 10 times if
* the acknowledgement fails.
*/
static int
asmc_command(device_t dev, uint8_t command) {
int i;
struct asmc_softc *sc = device_get_softc(dev);
for (i=0; i < 10; i++) {
ASMC_CMDPORT_WRITE(sc, command);
if (asmc_wait_ack(dev, 0x0c, 100) == 0) {
return (0);
}
}
#ifdef DEBUG
device_printf(dev, "%s failed: 0x%x, 0x%x\n", __func__, command,
ASMC_CMDPORT_READ(sc));
#endif
return (1);
}
static int
asmc_key_read(device_t dev, const char *key, uint8_t *buf, uint8_t len)
{
int i, error = 1, try = 0;
struct asmc_softc *sc = device_get_softc(dev);
mtx_lock_spin(&sc->sc_mtx);
begin:
if (asmc_command(dev, ASMC_CMDREAD))
goto out;
for (i = 0; i < 4; i++) {
ASMC_DATAPORT_WRITE(sc, key[i]);
if (asmc_wait(dev, 0x04))
goto out;
}
ASMC_DATAPORT_WRITE(sc, len);
for (i = 0; i < len; i++) {
if (asmc_wait(dev, 0x05))
goto out;
buf[i] = ASMC_DATAPORT_READ(sc);
}
error = 0;
out:
if (error) {
if (++try < 10) goto begin;
device_printf(dev,"%s for key %s failed %d times, giving up\n",
__func__, key, try);
}
mtx_unlock_spin(&sc->sc_mtx);
return (error);
}
#ifdef DEBUG
static int
asmc_key_dump(device_t dev, int number)
{
struct asmc_softc *sc = device_get_softc(dev);
char key[5] = { 0 };
char type[7] = { 0 };
uint8_t index[4];
uint8_t v[32];
uint8_t maxlen;
int i, error = 1, try = 0;
mtx_lock_spin(&sc->sc_mtx);
index[0] = (number >> 24) & 0xff;
index[1] = (number >> 16) & 0xff;
index[2] = (number >> 8) & 0xff;
index[3] = (number) & 0xff;
begin:
if (asmc_command(dev, 0x12))
goto out;
for (i = 0; i < 4; i++) {
ASMC_DATAPORT_WRITE(sc, index[i]);
if (asmc_wait(dev, 0x04))
goto out;
}
ASMC_DATAPORT_WRITE(sc, 4);
for (i = 0; i < 4; i++) {
if (asmc_wait(dev, 0x05))
goto out;
key[i] = ASMC_DATAPORT_READ(sc);
}
/* get type */
if (asmc_command(dev, 0x13))
goto out;
for (i = 0; i < 4; i++) {
ASMC_DATAPORT_WRITE(sc, key[i]);
if (asmc_wait(dev, 0x04))
goto out;
}
ASMC_DATAPORT_WRITE(sc, 6);
for (i = 0; i < 6; i++) {
if (asmc_wait(dev, 0x05))
goto out;
type[i] = ASMC_DATAPORT_READ(sc);
}
error = 0;
out:
if (error) {
if (++try < 10) goto begin;
device_printf(dev,"%s for key %s failed %d times, giving up\n",
__func__, key, try);
mtx_unlock_spin(&sc->sc_mtx);
}
else {
char buf[1024];
char buf2[8];
mtx_unlock_spin(&sc->sc_mtx);
maxlen = type[0];
type[0] = ' ';
type[5] = 0;
if (maxlen > sizeof(v)) {
device_printf(dev,
"WARNING: cropping maxlen from %d to %zu\n",
maxlen, sizeof(v));
maxlen = sizeof(v);
}
for (i = 0; i < sizeof(v); i++) {
v[i] = 0;
}
asmc_key_read(dev, key, v, maxlen);
snprintf(buf, sizeof(buf), "key %d is: %s, type %s "
"(len %d), data", number, key, type, maxlen);
for (i = 0; i < maxlen; i++) {
snprintf(buf2, sizeof(buf), " %02x", v[i]);
strlcat(buf, buf2, sizeof(buf));
}
strlcat(buf, " \n", sizeof(buf));
device_printf(dev, buf);
}
return (error);
}
#endif
static int
asmc_key_write(device_t dev, const char *key, uint8_t *buf, uint8_t len)
{
int i, error = -1, try = 0;
struct asmc_softc *sc = device_get_softc(dev);
mtx_lock_spin(&sc->sc_mtx);
begin:
ASMC_DPRINTF(("cmd port: cmd write\n"));
if (asmc_command(dev, ASMC_CMDWRITE))
goto out;
ASMC_DPRINTF(("data port: key\n"));
for (i = 0; i < 4; i++) {
ASMC_DATAPORT_WRITE(sc, key[i]);
if (asmc_wait(dev, 0x04))
goto out;
}
ASMC_DPRINTF(("data port: length\n"));
ASMC_DATAPORT_WRITE(sc, len);
ASMC_DPRINTF(("data port: buffer\n"));
for (i = 0; i < len; i++) {
if (asmc_wait(dev, 0x04))
goto out;
ASMC_DATAPORT_WRITE(sc, buf[i]);
}
error = 0;
out:
if (error) {
if (++try < 10) goto begin;
device_printf(dev,"%s for key %s failed %d times, giving up\n",
__func__, key, try);
}
mtx_unlock_spin(&sc->sc_mtx);
return (error);
}
/*
* Fan control functions.
*/
static int
asmc_fan_count(device_t dev)
{
uint8_t buf[1];
if (asmc_key_read(dev, ASMC_KEY_FANCOUNT, buf, 1) < 0)
return (-1);
return (buf[0]);
}
static int
asmc_fan_getvalue(device_t dev, const char *key, int fan)
{
int speed;
uint8_t buf[2];
char fankey[5];
snprintf(fankey, sizeof(fankey), key, fan);
if (asmc_key_read(dev, fankey, buf, 2) < 0)
return (-1);
speed = (buf[0] << 6) | (buf[1] >> 2);
return (speed);
}
static int
asmc_mb_sysctl_fanspeed(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
int fan = arg2;
int error;
int32_t v;
v = asmc_fan_getvalue(dev, ASMC_KEY_FANSPEED, fan);
error = sysctl_handle_int(oidp, &v, 0, req);
return (error);
}
static int
asmc_mb_sysctl_fansafespeed(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
int fan = arg2;
int error;
int32_t v;
v = asmc_fan_getvalue(dev, ASMC_KEY_FANSAFESPEED, fan);
error = sysctl_handle_int(oidp, &v, 0, req);
return (error);
}
static int
asmc_mb_sysctl_fanminspeed(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
int fan = arg2;
int error;
int32_t v;
v = asmc_fan_getvalue(dev, ASMC_KEY_FANMINSPEED, fan);
error = sysctl_handle_int(oidp, &v, 0, req);
return (error);
}
static int
asmc_mb_sysctl_fanmaxspeed(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
int fan = arg2;
int error;
int32_t v;
v = asmc_fan_getvalue(dev, ASMC_KEY_FANMAXSPEED, fan);
error = sysctl_handle_int(oidp, &v, 0, req);
return (error);
}
static int
asmc_mb_sysctl_fantargetspeed(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
int fan = arg2;
int error;
int32_t v;
v = asmc_fan_getvalue(dev, ASMC_KEY_FANTARGETSPEED, fan);
error = sysctl_handle_int(oidp, &v, 0, req);
return (error);
}
/*
* Temperature functions.
*/
static int
asmc_temp_getvalue(device_t dev, const char *key)
{
uint8_t buf[2];
/*
* Check for invalid temperatures.
*/
if (asmc_key_read(dev, key, buf, 2) < 0)
return (-1);
return (buf[0]);
}
static int
asmc_temp_sysctl(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
struct asmc_softc *sc = device_get_softc(dev);
int error, val;
val = asmc_temp_getvalue(dev, sc->sc_model->smc_temps[arg2]);
error = sysctl_handle_int(oidp, &val, 0, req);
return (error);
}
/*
* Sudden Motion Sensor functions.
*/
static int
asmc_sms_read(device_t dev, const char *key, int16_t *val)
{
uint8_t buf[2];
int error;
/* no need to do locking here as asmc_key_read() already does it */
switch (key[3]) {
case 'X':
case 'Y':
case 'Z':
error = asmc_key_read(dev, key, buf, 2);
break;
default:
device_printf(dev, "%s called with invalid argument %s\n",
__func__, key);
error = 1;
goto out;
}
*val = ((int16_t)buf[0] << 8) | buf[1];
out:
return (error);
}
static void
asmc_sms_calibrate(device_t dev)
{
struct asmc_softc *sc = device_get_softc(dev);
asmc_sms_read(dev, ASMC_KEY_SMS_X, &sc->sms_rest_x);
asmc_sms_read(dev, ASMC_KEY_SMS_Y, &sc->sms_rest_y);
asmc_sms_read(dev, ASMC_KEY_SMS_Z, &sc->sms_rest_z);
}
static int
asmc_sms_intrfast(void *arg)
{
uint8_t type;
device_t dev = (device_t) arg;
struct asmc_softc *sc = device_get_softc(dev);
if (!sc->sc_sms_intr_works)
return (FILTER_HANDLED);
mtx_lock_spin(&sc->sc_mtx);
type = ASMC_INTPORT_READ(sc);
mtx_unlock_spin(&sc->sc_mtx);
sc->sc_sms_intrtype = type;
asmc_sms_printintr(dev, type);
#ifdef INTR_FILTER
return (FILTER_SCHEDULE_THREAD | FILTER_HANDLED);
#else
taskqueue_enqueue(sc->sc_sms_tq, &sc->sc_sms_task);
#endif
return (FILTER_HANDLED);
}
#ifdef INTR_FILTER
static void
asmc_sms_handler(void *arg)
{
struct asmc_softc *sc = device_get_softc(arg);
asmc_sms_task(sc, 0);
}
#endif
static void
asmc_sms_printintr(device_t dev, uint8_t type)
{
switch (type) {
case ASMC_SMS_INTFF:
device_printf(dev, "WARNING: possible free fall!\n");
break;
case ASMC_SMS_INTHA:
device_printf(dev, "WARNING: high acceleration detected!\n");
break;
case ASMC_SMS_INTSH:
device_printf(dev, "WARNING: possible shock!\n");
break;
default:
device_printf(dev, "%s unknown interrupt\n", __func__);
}
}
static void
asmc_sms_task(void *arg, int pending)
{
struct asmc_softc *sc = (struct asmc_softc *)arg;
char notify[16];
int type;
switch (sc->sc_sms_intrtype) {
case ASMC_SMS_INTFF:
type = 2;
break;
case ASMC_SMS_INTHA:
type = 1;
break;
case ASMC_SMS_INTSH:
type = 0;
break;
default:
type = 255;
}
snprintf(notify, sizeof(notify), " notify=0x%x", type);
devctl_notify("ACPI", "asmc", "SMS", notify);
}
static int
asmc_mb_sysctl_sms_x(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
int error;
int16_t val;
int32_t v;
asmc_sms_read(dev, ASMC_KEY_SMS_X, &val);
v = (int32_t) val;
error = sysctl_handle_int(oidp, &v, 0, req);
return (error);
}
static int
asmc_mb_sysctl_sms_y(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
int error;
int16_t val;
int32_t v;
asmc_sms_read(dev, ASMC_KEY_SMS_Y, &val);
v = (int32_t) val;
error = sysctl_handle_int(oidp, &v, 0, req);
return (error);
}
static int
asmc_mb_sysctl_sms_z(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
int error;
int16_t val;
int32_t v;
asmc_sms_read(dev, ASMC_KEY_SMS_Z, &val);
v = (int32_t) val;
error = sysctl_handle_int(oidp, &v, sizeof(v), req);
return (error);
}
static int
asmc_mbp_sysctl_light_left(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
uint8_t buf[6];
int error;
int32_t v;
asmc_key_read(dev, ASMC_KEY_LIGHTLEFT, buf, 6);
v = buf[2];
error = sysctl_handle_int(oidp, &v, sizeof(v), req);
return (error);
}
static int
asmc_mbp_sysctl_light_right(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
uint8_t buf[6];
int error;
int32_t v;
asmc_key_read(dev, ASMC_KEY_LIGHTRIGHT, buf, 6);
v = buf[2];
error = sysctl_handle_int(oidp, &v, sizeof(v), req);
return (error);
}
static int
asmc_mbp_sysctl_light_control(SYSCTL_HANDLER_ARGS)
{
device_t dev = (device_t) arg1;
uint8_t buf[2];
int error;
unsigned int level;
static int32_t v;
error = sysctl_handle_int(oidp, &v, sizeof(v), req);
if (error == 0 && req->newptr != NULL) {
level = *(unsigned int *)req->newptr;
if (level > 255)
return (EINVAL);
v = level;
buf[0] = level;
buf[1] = 0x00;
asmc_key_write(dev, ASMC_KEY_LIGHTVALUE, buf, 2);
}
return (error);
}