/*- * SPDX-License-Identifier: BSD-2-Clause * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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; EARLY_DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0, BUS_PASS_RESOURCE); 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; EARLY_DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass, 0, 0, BUS_PASS_RESOURCE); /* 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, ®, 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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_NEEDGIANT, sc, 0, pmu_battmon, "I", "Post battery events to devd"); SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, pmu_acline_state, "I", "AC Line Status"); battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "batteries", CTLFLAG_RD | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 0, "Battery Information"); SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "present", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_MPSAFE, 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, ®, 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(void) { 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); if (error == 0) { 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); }