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freebsd-nq/sys/powerpc/powermac/pmu.c
Pedro F. Giffuni 71e3c3083b sys/powerpc: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:09:59 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2006 Michael Lorenz
* Copyright 2008 by Nathan Whitehorn
* 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/clock.h>
#include <sys/proc.h>
#include <sys/reboot.h>
#include <sys/sysctl.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <dev/led/led.h>
#include <machine/_inttypes.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/hid.h>
#include <machine/intr_machdep.h>
#include <machine/md_var.h>
#include <machine/pcb.h>
#include <machine/pio.h>
#include <machine/resource.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <sys/rman.h>
#include <dev/adb/adb.h>
#include "clock_if.h"
#include "pmuvar.h"
#include "viareg.h"
#include "uninorthvar.h" /* For unin_chip_sleep()/unin_chip_wake() */
#define PMU_DEFAULTS PMU_INT_TICK | PMU_INT_ADB | \
PMU_INT_PCEJECT | PMU_INT_SNDBRT | \
PMU_INT_BATTERY | PMU_INT_ENVIRONMENT
/*
* Bus interface
*/
static int pmu_probe(device_t);
static int pmu_attach(device_t);
static int pmu_detach(device_t);
/*
* Clock interface
*/
static int pmu_gettime(device_t dev, struct timespec *ts);
static int pmu_settime(device_t dev, struct timespec *ts);
/*
* ADB Interface
*/
static u_int pmu_adb_send(device_t dev, u_char command_byte, int len,
u_char *data, u_char poll);
static u_int pmu_adb_autopoll(device_t dev, uint16_t mask);
static u_int pmu_poll(device_t dev);
/*
* Power interface
*/
static void pmu_shutdown(void *xsc, int howto);
static void pmu_set_sleepled(void *xsc, int onoff);
static int pmu_server_mode(SYSCTL_HANDLER_ARGS);
static int pmu_acline_state(SYSCTL_HANDLER_ARGS);
static int pmu_query_battery(struct pmu_softc *sc, int batt,
struct pmu_battstate *info);
static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS);
static int pmu_battmon(SYSCTL_HANDLER_ARGS);
static void pmu_battquery_proc(void);
static void pmu_battery_notify(struct pmu_battstate *batt,
struct pmu_battstate *old);
/*
* List of battery-related sysctls we might ask for
*/
enum {
PMU_BATSYSCTL_PRESENT = 1 << 8,
PMU_BATSYSCTL_CHARGING = 2 << 8,
PMU_BATSYSCTL_CHARGE = 3 << 8,
PMU_BATSYSCTL_MAXCHARGE = 4 << 8,
PMU_BATSYSCTL_CURRENT = 5 << 8,
PMU_BATSYSCTL_VOLTAGE = 6 << 8,
PMU_BATSYSCTL_TIME = 7 << 8,
PMU_BATSYSCTL_LIFE = 8 << 8
};
static device_method_t pmu_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, pmu_probe),
DEVMETHOD(device_attach, pmu_attach),
DEVMETHOD(device_detach, pmu_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* ADB bus interface */
DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send),
DEVMETHOD(adb_hb_controller_poll, pmu_poll),
DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll),
/* Clock interface */
DEVMETHOD(clock_gettime, pmu_gettime),
DEVMETHOD(clock_settime, pmu_settime),
DEVMETHOD_END
};
static driver_t pmu_driver = {
"pmu",
pmu_methods,
sizeof(struct pmu_softc),
};
static devclass_t pmu_devclass;
DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0);
DRIVER_MODULE(adb, pmu, adb_driver, adb_devclass, 0, 0);
static int pmuextint_probe(device_t);
static int pmuextint_attach(device_t);
static device_method_t pmuextint_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, pmuextint_probe),
DEVMETHOD(device_attach, pmuextint_attach),
{0,0}
};
static driver_t pmuextint_driver = {
"pmuextint",
pmuextint_methods,
0
};
static devclass_t pmuextint_devclass;
DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass, 0, 0);
/* Make sure uhid is loaded, as it turns off some of the ADB emulation */
MODULE_DEPEND(pmu, usb, 1, 1, 1);
static void pmu_intr(void *arg);
static void pmu_in(struct pmu_softc *sc);
static void pmu_out(struct pmu_softc *sc);
static void pmu_ack_on(struct pmu_softc *sc);
static void pmu_ack_off(struct pmu_softc *sc);
static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg,
int rlen, uint8_t *out_msg);
static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset);
static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value);
static int pmu_intr_state(struct pmu_softc *);
/* these values shows that number of data returned after 'send' cmd is sent */
static signed char pm_send_cmd_type[] = {
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
0x01, 0x01, -1, -1, -1, -1, -1, -1,
0x00, 0x00, -1, -1, -1, -1, -1, 0x00,
-1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1,
0x00, -1, -1, -1, -1, -1, -1, -1,
0x04, 0x14, -1, 0x03, -1, -1, -1, -1,
0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1,
0x01, 0x01, -1, -1, -1, -1, -1, -1,
0x00, 0x00, -1, -1, 0x01, -1, -1, -1,
0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01,
0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1,
0x02, -1, -1, -1, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1,
0x01, 0x01, 0x01, -1, -1, -1, -1, -1,
0x00, 0x00, -1, -1, -1, 0x05, 0x04, 0x04,
0x04, -1, 0x00, -1, -1, -1, -1, -1,
0x00, -1, -1, -1, -1, -1, -1, -1,
0x01, 0x02, -1, -1, -1, -1, -1, -1,
0x00, 0x00, -1, -1, -1, -1, -1, -1,
0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1,
0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
0x00, -1, -1, -1, -1, -1, -1, -1,
0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1,
-1, 0x04, 0x00, -1, -1, -1, -1, -1,
0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1
};
/* these values shows that number of data returned after 'receive' cmd is sent */
static signed char pm_receive_cmd_type[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-1, -1, -1, -1, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x02, -1, -1, -1, -1, -1, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-1, -1, -1, -1, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x05, 0x15, -1, 0x02, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x02, -1, -1, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-1, -1, -1, -1, -1, 0x01, 0x01, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, -1, -1, -1, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x02, -1, -1, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-1, -1, -1, -1, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-1, -1, -1, -1, -1, -1, -1, -1,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x02, -1, -1, 0x02, -1, -1, -1,
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
-1, -1, 0x02, -1, -1, -1, -1, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-1, -1, -1, -1, -1, -1, -1, -1,
};
static int pmu_battmon_enabled = 1;
static struct proc *pmubattproc;
static struct kproc_desc pmu_batt_kp = {
"pmu_batt",
pmu_battquery_proc,
&pmubattproc
};
/* We only have one of each device, so globals are safe */
static device_t pmu = NULL;
static device_t pmu_extint = NULL;
static int
pmuextint_probe(device_t dev)
{
const char *type = ofw_bus_get_type(dev);
if (strcmp(type, "extint-gpio1") != 0)
return (ENXIO);
device_set_desc(dev, "Apple PMU99 External Interrupt");
return (0);
}
static int
pmu_probe(device_t dev)
{
const char *type = ofw_bus_get_type(dev);
if (strcmp(type, "via-pmu") != 0)
return (ENXIO);
device_set_desc(dev, "Apple PMU99 Controller");
return (0);
}
static int
setup_pmu_intr(device_t dev, device_t extint)
{
struct pmu_softc *sc;
sc = device_get_softc(dev);
sc->sc_irqrid = 0;
sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid,
RF_ACTIVE);
if (sc->sc_irq == NULL) {
device_printf(dev, "could not allocate interrupt\n");
return (ENXIO);
}
if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE
| INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) {
device_printf(dev, "could not setup interrupt\n");
bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid,
sc->sc_irq);
return (ENXIO);
}
return (0);
}
static int
pmuextint_attach(device_t dev)
{
pmu_extint = dev;
if (pmu)
return (setup_pmu_intr(pmu,dev));
return (0);
}
static int
pmu_attach(device_t dev)
{
struct pmu_softc *sc;
int i;
uint8_t reg;
uint8_t cmd[2] = {2, 0};
uint8_t resp[16];
phandle_t node,child;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *tree;
sc = device_get_softc(dev);
sc->sc_dev = dev;
sc->sc_memrid = 0;
sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->sc_memrid, RF_ACTIVE);
mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE);
if (sc->sc_memr == NULL) {
device_printf(dev, "Could not alloc mem resource!\n");
return (ENXIO);
}
/*
* Our interrupt is attached to a GPIO pin. Depending on probe order,
* we may not have found it yet. If we haven't, it will find us, and
* attach our interrupt then.
*/
pmu = dev;
if (pmu_extint != NULL) {
if (setup_pmu_intr(dev,pmu_extint) != 0)
return (ENXIO);
}
sc->sc_autopoll = 0;
sc->sc_batteries = 0;
sc->adb_bus = NULL;
sc->sc_leddev = NULL;
/* Init PMU */
pmu_write_reg(sc, vBufB, pmu_read_reg(sc, vBufB) | vPB4);
pmu_write_reg(sc, vDirB, (pmu_read_reg(sc, vDirB) | vPB4) & ~vPB3);
reg = PMU_DEFAULTS;
pmu_send(sc, PMU_SET_IMASK, 1, &reg, 16, resp);
pmu_write_reg(sc, vIER, 0x94); /* make sure VIA interrupts are on */
pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp);
pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp);
/* Initialize child buses (ADB) */
node = ofw_bus_get_node(dev);
for (child = OF_child(node); child != 0; child = OF_peer(child)) {
char name[32];
memset(name, 0, sizeof(name));
OF_getprop(child, "name", name, sizeof(name));
if (bootverbose)
device_printf(dev, "PMU child <%s>\n",name);
if (strncmp(name, "adb", 4) == 0) {
sc->adb_bus = device_add_child(dev,"adb",-1);
}
if (strncmp(name, "power-mgt", 9) == 0) {
uint32_t prim_info[9];
if (OF_getprop(child, "prim-info", prim_info,
sizeof(prim_info)) >= 7)
sc->sc_batteries = (prim_info[6] >> 16) & 0xff;
if (bootverbose && sc->sc_batteries > 0)
device_printf(dev, "%d batteries detected\n",
sc->sc_batteries);
}
}
/*
* Set up sysctls
*/
ctx = device_get_sysctl_ctx(dev);
tree = device_get_sysctl_tree(dev);
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
"server_mode", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
pmu_server_mode, "I", "Enable reboot after power failure");
if (sc->sc_batteries > 0) {
struct sysctl_oid *oid, *battroot;
char battnum[2];
/* Only start the battery monitor if we have a battery. */
kproc_start(&pmu_batt_kp);
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
"monitor_batteries", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
pmu_battmon, "I", "Post battery events to devd");
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
"acline", CTLTYPE_INT | CTLFLAG_RD, sc, 0,
pmu_acline_state, "I", "AC Line Status");
battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
"batteries", CTLFLAG_RD, 0, "Battery Information");
for (i = 0; i < sc->sc_batteries; i++) {
battnum[0] = i + '0';
battnum[1] = '\0';
oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot),
OID_AUTO, battnum, CTLFLAG_RD, 0,
"Battery Information");
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
"present", CTLTYPE_INT | CTLFLAG_RD, sc,
PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl,
"I", "Battery present");
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
"charging", CTLTYPE_INT | CTLFLAG_RD, sc,
PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl,
"I", "Battery charging");
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
"charge", CTLTYPE_INT | CTLFLAG_RD, sc,
PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl,
"I", "Battery charge (mAh)");
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
"maxcharge", CTLTYPE_INT | CTLFLAG_RD, sc,
PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl,
"I", "Maximum battery capacity (mAh)");
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
"rate", CTLTYPE_INT | CTLFLAG_RD, sc,
PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl,
"I", "Battery discharge rate (mA)");
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
"voltage", CTLTYPE_INT | CTLFLAG_RD, sc,
PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl,
"I", "Battery voltage (mV)");
/* Knobs for mental compatibility with ACPI */
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
"time", CTLTYPE_INT | CTLFLAG_RD, sc,
PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl,
"I", "Time Remaining (minutes)");
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
"life", CTLTYPE_INT | CTLFLAG_RD, sc,
PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl,
"I", "Capacity remaining (percent)");
}
}
/*
* Set up LED interface
*/
sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled");
/*
* Register RTC
*/
clock_register(dev, 1000);
/*
* Register power control handler
*/
EVENTHANDLER_REGISTER(shutdown_final, pmu_shutdown, sc,
SHUTDOWN_PRI_LAST);
return (bus_generic_attach(dev));
}
static int
pmu_detach(device_t dev)
{
struct pmu_softc *sc;
sc = device_get_softc(dev);
if (sc->sc_leddev != NULL)
led_destroy(sc->sc_leddev);
bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq);
bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr);
mtx_destroy(&sc->sc_mutex);
return (bus_generic_detach(dev));
}
static uint8_t
pmu_read_reg(struct pmu_softc *sc, u_int offset)
{
return (bus_read_1(sc->sc_memr, offset));
}
static void
pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value)
{
bus_write_1(sc->sc_memr, offset, value);
}
static int
pmu_send_byte(struct pmu_softc *sc, uint8_t data)
{
pmu_out(sc);
pmu_write_reg(sc, vSR, data);
pmu_ack_off(sc);
/* wait for intr to come up */
/* XXX should add a timeout and bail if it expires */
do {} while (pmu_intr_state(sc) == 0);
pmu_ack_on(sc);
do {} while (pmu_intr_state(sc));
pmu_ack_on(sc);
return 0;
}
static inline int
pmu_read_byte(struct pmu_softc *sc, uint8_t *data)
{
volatile uint8_t scratch;
pmu_in(sc);
scratch = pmu_read_reg(sc, vSR);
pmu_ack_off(sc);
/* wait for intr to come up */
do {} while (pmu_intr_state(sc) == 0);
pmu_ack_on(sc);
do {} while (pmu_intr_state(sc));
*data = pmu_read_reg(sc, vSR);
return 0;
}
static int
pmu_intr_state(struct pmu_softc *sc)
{
return ((pmu_read_reg(sc, vBufB) & vPB3) == 0);
}
static int
pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen,
uint8_t *out_msg)
{
struct pmu_softc *sc = cookie;
int i, rcv_len = -1;
uint8_t out_len, intreg;
intreg = pmu_read_reg(sc, vIER);
intreg &= 0x10;
pmu_write_reg(sc, vIER, intreg);
/* wait idle */
do {} while (pmu_intr_state(sc));
/* send command */
pmu_send_byte(sc, cmd);
/* send length if necessary */
if (pm_send_cmd_type[cmd] < 0) {
pmu_send_byte(sc, length);
}
for (i = 0; i < length; i++) {
pmu_send_byte(sc, in_msg[i]);
}
/* see if there's data to read */
rcv_len = pm_receive_cmd_type[cmd];
if (rcv_len == 0)
goto done;
/* read command */
if (rcv_len == 1) {
pmu_read_byte(sc, out_msg);
goto done;
} else
out_msg[0] = cmd;
if (rcv_len < 0) {
pmu_read_byte(sc, &out_len);
rcv_len = out_len + 1;
}
for (i = 1; i < min(rcv_len, rlen); i++)
pmu_read_byte(sc, &out_msg[i]);
done:
pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90);
return rcv_len;
}
static u_int
pmu_poll(device_t dev)
{
pmu_intr(dev);
return (0);
}
static void
pmu_in(struct pmu_softc *sc)
{
uint8_t reg;
reg = pmu_read_reg(sc, vACR);
reg &= ~vSR_OUT;
reg |= 0x0c;
pmu_write_reg(sc, vACR, reg);
}
static void
pmu_out(struct pmu_softc *sc)
{
uint8_t reg;
reg = pmu_read_reg(sc, vACR);
reg |= vSR_OUT;
reg |= 0x0c;
pmu_write_reg(sc, vACR, reg);
}
static void
pmu_ack_off(struct pmu_softc *sc)
{
uint8_t reg;
reg = pmu_read_reg(sc, vBufB);
reg &= ~vPB4;
pmu_write_reg(sc, vBufB, reg);
}
static void
pmu_ack_on(struct pmu_softc *sc)
{
uint8_t reg;
reg = pmu_read_reg(sc, vBufB);
reg |= vPB4;
pmu_write_reg(sc, vBufB, reg);
}
static void
pmu_intr(void *arg)
{
device_t dev;
struct pmu_softc *sc;
unsigned int len;
uint8_t resp[16];
uint8_t junk[16];
dev = (device_t)arg;
sc = device_get_softc(dev);
mtx_lock(&sc->sc_mutex);
pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */
len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp);
mtx_unlock(&sc->sc_mutex);
if ((len < 1) || (resp[1] == 0)) {
return;
}
if (resp[1] & PMU_INT_ADB) {
/*
* the PMU will turn off autopolling after each command that
* it did not issue, so we assume any but TALK R0 is ours and
* re-enable autopoll here whenever we receive an ACK for a
* non TR0 command.
*/
mtx_lock(&sc->sc_mutex);
if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) {
if (sc->sc_autopoll) {
uint8_t cmd[] = {0, PMU_SET_POLL_MASK,
(sc->sc_autopoll >> 8) & 0xff,
sc->sc_autopoll & 0xff};
pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk);
}
}
mtx_unlock(&sc->sc_mutex);
adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2],
len - 3,&resp[3]);
}
if (resp[1] & PMU_INT_ENVIRONMENT) {
/* if the lid was just closed, notify devd. */
if ((resp[2] & PMU_ENV_LID_CLOSED) && (!sc->lid_closed)) {
sc->lid_closed = 1;
devctl_notify("PMU", "lid", "close", NULL);
}
else if (!(resp[2] & PMU_ENV_LID_CLOSED) && (sc->lid_closed)) {
/* if the lid was just opened, notify devd. */
sc->lid_closed = 0;
devctl_notify("PMU", "lid", "open", NULL);
}
if (resp[2] & PMU_ENV_POWER)
devctl_notify("PMU", "Button", "pressed", NULL);
}
}
static u_int
pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data,
u_char poll)
{
struct pmu_softc *sc = device_get_softc(dev);
int i,replen;
uint8_t packet[16], resp[16];
/* construct an ADB command packet and send it */
packet[0] = command_byte;
packet[1] = 0;
packet[2] = len;
for (i = 0; i < len; i++)
packet[i + 3] = data[i];
mtx_lock(&sc->sc_mutex);
replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp);
mtx_unlock(&sc->sc_mutex);
if (poll)
pmu_poll(dev);
return 0;
}
static u_int
pmu_adb_autopoll(device_t dev, uint16_t mask)
{
struct pmu_softc *sc = device_get_softc(dev);
/* magical incantation to re-enable autopolling */
uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff};
uint8_t resp[16];
mtx_lock(&sc->sc_mutex);
if (sc->sc_autopoll == mask) {
mtx_unlock(&sc->sc_mutex);
return 0;
}
sc->sc_autopoll = mask & 0xffff;
if (mask)
pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp);
else
pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp);
mtx_unlock(&sc->sc_mutex);
return 0;
}
static void
pmu_shutdown(void *xsc, int howto)
{
struct pmu_softc *sc = xsc;
uint8_t cmd[] = {'M', 'A', 'T', 'T'};
if (howto & RB_HALT)
pmu_send(sc, PMU_POWER_OFF, 4, cmd, 0, NULL);
else
pmu_send(sc, PMU_RESET_CPU, 0, NULL, 0, NULL);
for (;;);
}
static void
pmu_set_sleepled(void *xsc, int onoff)
{
struct pmu_softc *sc = xsc;
uint8_t cmd[] = {4, 0, 0};
cmd[2] = onoff;
mtx_lock(&sc->sc_mutex);
pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL);
mtx_unlock(&sc->sc_mutex);
}
static int
pmu_server_mode(SYSCTL_HANDLER_ARGS)
{
struct pmu_softc *sc = arg1;
u_int server_mode = 0;
uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS};
uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT};
uint8_t resp[3];
int error, len;
mtx_lock(&sc->sc_mutex);
len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp);
mtx_unlock(&sc->sc_mutex);
if (len == 3)
server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0;
error = sysctl_handle_int(oidp, &server_mode, 0, req);
if (len != 3)
return (EINVAL);
if (error || !req->newptr)
return (error);
if (server_mode == 1)
setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS;
else if (server_mode == 0)
setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS;
else
return (EINVAL);
setcmd[1] = resp[1];
mtx_lock(&sc->sc_mutex);
pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp);
mtx_unlock(&sc->sc_mutex);
return (0);
}
static int
pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info)
{
uint8_t reg;
uint8_t resp[16];
int len;
reg = batt + 1;
mtx_lock(&sc->sc_mutex);
len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, &reg, 16, resp);
mtx_unlock(&sc->sc_mutex);
if (len < 3)
return (-1);
/* All PMU battery info replies share a common header:
* Byte 1 Payload Format
* Byte 2 Battery Flags
*/
info->state = resp[2];
switch (resp[1]) {
case 3:
case 4:
/*
* Formats 3 and 4 appear to be the same:
* Byte 3 Charge
* Byte 4 Max Charge
* Byte 5 Current
* Byte 6 Voltage
*/
info->charge = resp[3];
info->maxcharge = resp[4];
/* Current can be positive or negative */
info->current = (int8_t)resp[5];
info->voltage = resp[6];
break;
case 5:
/*
* Formats 5 is a wider version of formats 3 and 4
* Byte 3-4 Charge
* Byte 5-6 Max Charge
* Byte 7-8 Current
* Byte 9-10 Voltage
*/
info->charge = (resp[3] << 8) | resp[4];
info->maxcharge = (resp[5] << 8) | resp[6];
/* Current can be positive or negative */
info->current = (int16_t)((resp[7] << 8) | resp[8]);
info->voltage = (resp[9] << 8) | resp[10];
break;
default:
device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n",
resp[1]);
return (-1);
}
return (0);
}
static void
pmu_battery_notify(struct pmu_battstate *batt, struct pmu_battstate *old)
{
char notify_buf[16];
int new_acline, old_acline;
new_acline = (batt->state & PMU_PWR_AC_PRESENT) ? 1 : 0;
old_acline = (old->state & PMU_PWR_AC_PRESENT) ? 1 : 0;
if (new_acline != old_acline) {
snprintf(notify_buf, sizeof(notify_buf),
"notify=0x%02x", new_acline);
devctl_notify("PMU", "POWER", "ACLINE", notify_buf);
}
}
static void
pmu_battquery_proc()
{
struct pmu_softc *sc;
struct pmu_battstate batt;
struct pmu_battstate cur_batt;
int error;
sc = device_get_softc(pmu);
bzero(&cur_batt, sizeof(cur_batt));
while (1) {
kproc_suspend_check(curproc);
error = pmu_query_battery(sc, 0, &batt);
pmu_battery_notify(&batt, &cur_batt);
cur_batt = batt;
pause("pmu_batt", hz);
}
}
static int
pmu_battmon(SYSCTL_HANDLER_ARGS)
{
struct pmu_softc *sc;
int error, result;
sc = arg1;
result = pmu_battmon_enabled;
error = sysctl_handle_int(oidp, &result, 0, req);
if (error || !req->newptr)
return (error);
if (!result && pmu_battmon_enabled)
error = kproc_suspend(pmubattproc, hz);
else if (result && pmu_battmon_enabled == 0)
error = kproc_resume(pmubattproc);
pmu_battmon_enabled = (result != 0);
return (error);
}
static int
pmu_acline_state(SYSCTL_HANDLER_ARGS)
{
struct pmu_softc *sc;
struct pmu_battstate batt;
int error, result;
sc = arg1;
/* The PMU treats the AC line status as a property of the battery */
error = pmu_query_battery(sc, 0, &batt);
if (error != 0)
return (error);
result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0;
error = sysctl_handle_int(oidp, &result, 0, req);
return (error);
}
static int
pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS)
{
struct pmu_softc *sc;
struct pmu_battstate batt;
int error, result;
sc = arg1;
error = pmu_query_battery(sc, arg2 & 0x00ff, &batt);
if (error != 0)
return (error);
switch (arg2 & 0xff00) {
case PMU_BATSYSCTL_PRESENT:
result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0;
break;
case PMU_BATSYSCTL_CHARGING:
result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0;
break;
case PMU_BATSYSCTL_CHARGE:
result = batt.charge;
break;
case PMU_BATSYSCTL_MAXCHARGE:
result = batt.maxcharge;
break;
case PMU_BATSYSCTL_CURRENT:
result = batt.current;
break;
case PMU_BATSYSCTL_VOLTAGE:
result = batt.voltage;
break;
case PMU_BATSYSCTL_TIME:
/* Time remaining until full charge/discharge, in minutes */
if (batt.current >= 0)
result = (batt.maxcharge - batt.charge) /* mAh */ * 60
/ batt.current /* mA */;
else
result = (batt.charge /* mAh */ * 60)
/ (-batt.current /* mA */);
break;
case PMU_BATSYSCTL_LIFE:
/* Battery charge fraction, in percent */
result = (batt.charge * 100) / batt.maxcharge;
break;
default:
/* This should never happen */
result = -1;
}
error = sysctl_handle_int(oidp, &result, 0, req);
return (error);
}
#define DIFF19041970 2082844800
static int
pmu_gettime(device_t dev, struct timespec *ts)
{
struct pmu_softc *sc = device_get_softc(dev);
uint8_t resp[16];
uint32_t sec;
mtx_lock(&sc->sc_mutex);
pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp);
mtx_unlock(&sc->sc_mutex);
memcpy(&sec, &resp[1], 4);
ts->tv_sec = sec - DIFF19041970;
ts->tv_nsec = 0;
return (0);
}
static int
pmu_settime(device_t dev, struct timespec *ts)
{
struct pmu_softc *sc = device_get_softc(dev);
uint32_t sec;
sec = ts->tv_sec + DIFF19041970;
mtx_lock(&sc->sc_mutex);
pmu_send(sc, PMU_SET_RTC, sizeof(sec), (uint8_t *)&sec, 0, NULL);
mtx_unlock(&sc->sc_mutex);
return (0);
}
int
pmu_set_speed(int low_speed)
{
struct pmu_softc *sc;
uint8_t sleepcmd[] = {'W', 'O', 'O', 'F', 0};
uint8_t resp[16];
sc = device_get_softc(pmu);
pmu_write_reg(sc, vIER, 0x10);
spinlock_enter();
mtdec(0x7fffffff);
mb();
mtdec(0x7fffffff);
sleepcmd[4] = low_speed;
pmu_send(sc, PMU_CPU_SPEED, 5, sleepcmd, 16, resp);
unin_chip_sleep(NULL, 1);
platform_sleep();
unin_chip_wake(NULL);
mtdec(1); /* Force a decrementer exception */
spinlock_exit();
pmu_write_reg(sc, vIER, 0x90);
return (0);
}
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