/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * Power Button Driver * * This driver handles interrupt generated by the power button on * platforms with "power" device node which has "button" property. * Currently, these platforms are: * * ACPI-enabled x86/x64 platforms * Ultra-5_10, Ultra-80, Sun-Blade-100, Sun-Blade-150, * Sun-Blade-1500, Sun-Blade-2500, * Sun-Fire-V210, Sun-Fire-V240, Netra-240 * * Only one instance is allowed to attach. In order to know when * an application that has opened the device is going away, a new * minor clone is created for each open(9E) request. There are * allocations for creating minor clones between 1 and 255. The ioctl * interface is defined by pbio(7I) and approved as part of * PSARC/1999/393 case. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef ACPI_POWER_BUTTON #include #include #endif /* ACPI_POWER_BUTTON */ /* * Maximum number of clone minors that is allowed. This value * is defined relatively low to save memory. */ #define POWER_MAX_CLONE 256 /* * Minor number is instance << 8 + clone minor from range 1-255; clone 0 * is reserved for "original" minor. */ #define POWER_MINOR_TO_CLONE(minor) ((minor) & (POWER_MAX_CLONE - 1)) /* * Power Button Abort Delay */ #define ABORT_INCREMENT_DELAY 10 /* * Driver global variables */ static void *power_state; static int power_inst = -1; static hrtime_t power_button_debounce = NANOSEC/MILLISEC*10; static hrtime_t power_button_abort_interval = 1.5 * NANOSEC; static int power_button_abort_presses = 3; static int power_button_abort_enable = 1; static int power_button_enable = 1; static int power_button_pressed = 0; static int power_button_cancel = 0; static int power_button_timeouts = 0; static int timeout_cancel = 0; static int additional_presses = 0; /* * Function prototypes */ static int power_attach(dev_info_t *, ddi_attach_cmd_t); static int power_detach(dev_info_t *, ddi_detach_cmd_t); static int power_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **); static int power_open(dev_t *, int, int, cred_t *); static int power_close(dev_t, int, int, cred_t *); static int power_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); static int power_chpoll(dev_t, short, int, short *, struct pollhead **); #ifndef ACPI_POWER_BUTTON static uint_t power_high_intr(caddr_t); #endif static uint_t power_soft_intr(caddr_t); static uint_t power_issue_shutdown(caddr_t); static void power_timeout(caddr_t); static void power_log_message(void); /* * Structure used in the driver */ struct power_soft_state { dev_info_t *dip; /* device info pointer */ kmutex_t power_mutex; /* mutex lock */ kmutex_t power_intr_mutex; /* interrupt mutex lock */ ddi_iblock_cookie_t soft_iblock_cookie; /* holds interrupt cookie */ ddi_iblock_cookie_t high_iblock_cookie; /* holds interrupt cookie */ ddi_softintr_t softintr_id; /* soft interrupt id */ uchar_t clones[POWER_MAX_CLONE]; /* array of minor clones */ int monitor_on; /* clone monitoring the button event */ /* clone 0 indicates no one is */ /* monitoring the button event */ pollhead_t pollhd; /* poll head struct */ int events; /* bit map of occured events */ int shutdown_pending; /* system shutdown in progress */ #ifdef ACPI_POWER_BUTTON boolean_t fixed_attached; /* true means fixed is attached */ boolean_t gpe_attached; /* true means GPE is attached */ ACPI_HANDLE button_obj; /* handle to device power button */ #else ddi_acc_handle_t power_rhandle; /* power button register handle */ uint8_t *power_btn_reg; /* power button register address */ uint8_t power_btn_bit; /* power button register bit */ boolean_t power_regs_mapped; /* flag to tell if regs mapped */ boolean_t power_btn_ioctl; /* flag to specify ioctl request */ #endif }; #ifdef ACPI_POWER_BUTTON static int power_attach_acpi(struct power_soft_state *softsp); static void power_detach_acpi(struct power_soft_state *softsp); static UINT32 power_acpi_fixed_event(void *ctx); #else static int power_setup_regs(struct power_soft_state *softsp); static void power_free_regs(struct power_soft_state *softsp); #endif /* ACPI_POWER_BUTTON */ /* * Configuration data structures */ static struct cb_ops power_cb_ops = { power_open, /* open */ power_close, /* close */ nodev, /* strategy */ nodev, /* print */ nodev, /* dump */ nodev, /* read */ nodev, /* write */ power_ioctl, /* ioctl */ nodev, /* devmap */ nodev, /* mmap */ nodev, /* segmap */ power_chpoll, /* poll */ ddi_prop_op, /* cb_prop_op */ NULL, /* streamtab */ D_MP | D_NEW, /* Driver compatibility flag */ CB_REV, /* rev */ nodev, /* cb_aread */ nodev /* cb_awrite */ }; static struct dev_ops power_ops = { DEVO_REV, /* devo_rev, */ 0, /* refcnt */ power_getinfo, /* getinfo */ nulldev, /* identify */ nulldev, /* probe */ power_attach, /* attach */ power_detach, /* detach */ nodev, /* reset */ &power_cb_ops, /* cb_ops */ (struct bus_ops *)NULL, /* bus_ops */ NULL /* power */ }; static struct modldrv modldrv = { &mod_driverops, /* Type of module. This one is a driver */ "power button driver v%I%", /* name of module */ &power_ops, /* driver ops */ }; static struct modlinkage modlinkage = { MODREV_1, (void *)&modldrv, NULL }; /* * These are the module initialization routines. */ int _init(void) { int error; if ((error = ddi_soft_state_init(&power_state, sizeof (struct power_soft_state), 0)) != 0) return (error); if ((error = mod_install(&modlinkage)) != 0) ddi_soft_state_fini(&power_state); return (error); } int _fini(void) { int error; if ((error = mod_remove(&modlinkage)) == 0) ddi_soft_state_fini(&power_state); return (error); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } /*ARGSUSED*/ static int power_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) { struct power_soft_state *softsp; if (power_inst == -1) return (DDI_FAILURE); switch (infocmd) { case DDI_INFO_DEVT2DEVINFO: if ((softsp = ddi_get_soft_state(power_state, power_inst)) == NULL) return (DDI_FAILURE); *result = (void *)softsp->dip; return (DDI_SUCCESS); case DDI_INFO_DEVT2INSTANCE: *result = (void *)(uintptr_t)power_inst; return (DDI_SUCCESS); default: return (DDI_FAILURE); } } static int power_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) { struct power_soft_state *softsp; switch (cmd) { case DDI_ATTACH: break; case DDI_RESUME: return (DDI_SUCCESS); default: return (DDI_FAILURE); } /* * If the power node doesn't have "button" property, quietly * fail to attach. */ if (ddi_prop_exists(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "button") == 0) return (DDI_FAILURE); if (power_inst != -1) return (DDI_FAILURE); power_inst = ddi_get_instance(dip); if (ddi_soft_state_zalloc(power_state, power_inst) != DDI_SUCCESS) return (DDI_FAILURE); if (ddi_create_minor_node(dip, "power_button", S_IFCHR, (power_inst << 8) + 0, "ddi_power_button", 0) != DDI_SUCCESS) return (DDI_FAILURE); softsp = ddi_get_soft_state(power_state, power_inst); softsp->dip = dip; #ifdef ACPI_POWER_BUTTON (void) power_attach_acpi(softsp); #else if (power_setup_regs(softsp) != DDI_SUCCESS) { cmn_err(CE_WARN, "power_attach: failed to setup registers"); goto error; } if (ddi_get_iblock_cookie(dip, 0, &softsp->high_iblock_cookie) != DDI_SUCCESS) { cmn_err(CE_WARN, "power_attach: ddi_get_soft_iblock_cookie " "failed."); goto error; } mutex_init(&softsp->power_intr_mutex, NULL, MUTEX_DRIVER, softsp->high_iblock_cookie); if (ddi_add_intr(dip, 0, &softsp->high_iblock_cookie, NULL, power_high_intr, (caddr_t)softsp) != DDI_SUCCESS) { cmn_err(CE_WARN, "power_attach: failed to add high-level " " interrupt handler."); mutex_destroy(&softsp->power_intr_mutex); goto error; } #endif /* ACPI_POWER_BUTTON */ if (ddi_get_soft_iblock_cookie(dip, DDI_SOFTINT_LOW, &softsp->soft_iblock_cookie) != DDI_SUCCESS) { cmn_err(CE_WARN, "power_attach: ddi_get_soft_iblock_cookie " "failed."); mutex_destroy(&softsp->power_intr_mutex); ddi_remove_intr(dip, 0, NULL); goto error; } mutex_init(&softsp->power_mutex, NULL, MUTEX_DRIVER, (void *)softsp->soft_iblock_cookie); if (ddi_add_softintr(dip, DDI_SOFTINT_LOW, &softsp->softintr_id, NULL, NULL, power_soft_intr, (caddr_t)softsp) != DDI_SUCCESS) { cmn_err(CE_WARN, "power_attach: failed to add soft " "interrupt handler."); mutex_destroy(&softsp->power_mutex); mutex_destroy(&softsp->power_intr_mutex); ddi_remove_intr(dip, 0, NULL); goto error; } ddi_report_dev(dip); return (DDI_SUCCESS); error: #ifdef ACPI_POWER_BUTTON /* * detach ACPI power button */ power_detach_acpi(softsp); #else power_free_regs(softsp); #endif /* ACPI_POWER_BUTTON */ ddi_remove_minor_node(dip, "power_button"); ddi_soft_state_free(power_state, power_inst); return (DDI_FAILURE); } /*ARGSUSED*/ /* * This driver doesn't detach. */ static int power_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) { /* * Since the "power" node has "reg" property, as part of * the suspend operation, detach(9E) entry point is called. * There is no state to save, since this register is used * by OBP to power off the system and the state of the * power off is preserved by hardware. */ return ((cmd == DDI_SUSPEND) ? DDI_SUCCESS : DDI_FAILURE); } #ifndef ACPI_POWER_BUTTON /* * Handler for the high-level interrupt. */ static uint_t power_high_intr(caddr_t arg) { struct power_soft_state *softsp = (struct power_soft_state *)arg; ddi_acc_handle_t hdl = softsp->power_rhandle; uint8_t reg; hrtime_t tstamp; static hrtime_t o_tstamp = 0; static hrtime_t power_button_tstamp = 0; static int power_button_cnt; if (softsp->power_regs_mapped) { mutex_enter(&softsp->power_intr_mutex); reg = ddi_get8(hdl, softsp->power_btn_reg); if (reg & softsp->power_btn_bit) { reg &= softsp->power_btn_bit; ddi_put8(hdl, softsp->power_btn_reg, reg); (void) ddi_get8(hdl, softsp->power_btn_reg); } else { if (!softsp->power_btn_ioctl) { mutex_exit(&softsp->power_intr_mutex); return (DDI_INTR_CLAIMED); } softsp->power_btn_ioctl = B_FALSE; } mutex_exit(&softsp->power_intr_mutex); } tstamp = gethrtime(); /* need to deal with power button debounce */ if (o_tstamp && (tstamp - o_tstamp) < power_button_debounce) { o_tstamp = tstamp; return (DDI_INTR_CLAIMED); } o_tstamp = tstamp; power_button_cnt++; mutex_enter(&softsp->power_intr_mutex); power_button_pressed++; mutex_exit(&softsp->power_intr_mutex); /* * If power button abort is enabled and power button was pressed * power_button_abort_presses times within power_button_abort_interval * then call abort_sequence_enter(); */ if (power_button_abort_enable) { if (power_button_abort_presses == 1 || tstamp < (power_button_tstamp + power_button_abort_interval)) { if (power_button_cnt == power_button_abort_presses) { mutex_enter(&softsp->power_intr_mutex); power_button_cancel += power_button_timeouts; power_button_pressed = 0; mutex_exit(&softsp->power_intr_mutex); power_button_cnt = 0; abort_sequence_enter("Power Button Abort"); return (DDI_INTR_CLAIMED); } } else { power_button_cnt = 1; power_button_tstamp = tstamp; } } if (!power_button_enable) return (DDI_INTR_CLAIMED); /* post softint to issue timeout for power button action */ if (softsp->softintr_id != NULL) ddi_trigger_softintr(softsp->softintr_id); return (DDI_INTR_CLAIMED); } #endif /* ifndef ACPI_POWER_BUTTON */ /* * Handle the softints.... * * If only one softint is posted for several button presses, record * the number of additional presses just incase this was actually not quite * an Abort sequence so that we can log this event later. * * Issue a timeout with a duration being a fraction larger than * the specified Abort interval inorder to perform a power down if required. */ static uint_t power_soft_intr(caddr_t arg) { struct power_soft_state *softsp = (struct power_soft_state *)arg; if (!power_button_abort_enable) return (power_issue_shutdown(arg)); mutex_enter(&softsp->power_intr_mutex); if (!power_button_pressed) { mutex_exit(&softsp->power_intr_mutex); return (DDI_INTR_CLAIMED); } /* * Schedule a timeout to do the necessary * work for shutdown, only one timeout for * n presses if power button was pressed * more than once before softint fired */ if (power_button_pressed > 1) additional_presses += power_button_pressed - 1; timeout_cancel = 0; power_button_pressed = 0; power_button_timeouts++; mutex_exit(&softsp->power_intr_mutex); (void) timeout((void(*)(void *))power_timeout, softsp, NSEC_TO_TICK(power_button_abort_interval) + ABORT_INCREMENT_DELAY); return (DDI_INTR_CLAIMED); } /* * Upon receiving a timeout the following is determined: * * If an Abort sequence was issued, then we cancel all outstanding timeouts * and additional presses prior to the Abort sequence. * * If we had multiple timeouts issued and the abort sequence was not met, * then we had more than one button press to power down the machine. We * were probably trying to issue an abort. So log a message indicating this * and cancel all outstanding timeouts. * * If we had just one timeout and the abort sequence was not met then * we really did want to power down the machine, so call power_issue_shutdown() * to do the work and schedule a power down */ static void power_timeout(caddr_t arg) { struct power_soft_state *softsp = (struct power_soft_state *)arg; static int first = 0; /* * Abort was generated cancel all outstanding power * button timeouts */ mutex_enter(&softsp->power_intr_mutex); if (power_button_cancel) { power_button_cancel--; power_button_timeouts--; if (!first) { first++; additional_presses = 0; } mutex_exit(&softsp->power_intr_mutex); return; } first = 0; /* * We get here if the timeout(s) have fired and they were * not issued prior to an abort. * * If we had more than one press in the interval we were * probably trying to issue an abort, but didnt press the * required number within the interval. Hence cancel all * timeouts and do not continue towards shutdown. */ if (!timeout_cancel) { timeout_cancel = power_button_timeouts + additional_presses; power_button_timeouts--; if (!power_button_timeouts) additional_presses = 0; if (timeout_cancel > 1) { mutex_exit(&softsp->power_intr_mutex); cmn_err(CE_NOTE, "Power Button pressed " "%d times, cancelling all requests", timeout_cancel); return; } mutex_exit(&softsp->power_intr_mutex); /* Go and do the work to request shutdown */ (void) power_issue_shutdown((caddr_t)softsp); return; } power_button_timeouts--; if (!power_button_timeouts) additional_presses = 0; mutex_exit(&softsp->power_intr_mutex); } #ifdef ACPI_POWER_BUTTON static void do_shutdown(void) { proc_t *initpp; /* * If we're still booting and init(1) isn't set up yet, simply halt. */ mutex_enter(&pidlock); initpp = prfind(P_INITPID); mutex_exit(&pidlock); if (initpp == NULL) { extern void halt(char *); halt("Power off the System"); /* just in case */ } /* * else, graceful shutdown with inittab and all getting involved */ psignal(initpp, SIGPWR); } #endif static uint_t power_issue_shutdown(caddr_t arg) { struct power_soft_state *softsp = (struct power_soft_state *)arg; mutex_enter(&softsp->power_mutex); softsp->events |= PB_BUTTON_PRESS; if (softsp->monitor_on != 0) { mutex_exit(&softsp->power_mutex); pollwakeup(&softsp->pollhd, POLLRDNORM); pollwakeup(&softsp->pollhd, POLLIN); return (DDI_INTR_CLAIMED); } if (!softsp->shutdown_pending) { cmn_err(CE_WARN, "Power off requested from power button or " "SC, powering down the system!"); softsp->shutdown_pending = 1; do_shutdown(); /* * Wait a while for "do_shutdown()" to shut down the system * before logging an error message. */ (void) timeout((void(*)(void *))power_log_message, NULL, 100 * hz); } mutex_exit(&softsp->power_mutex); return (DDI_INTR_CLAIMED); } /* * Open the device. */ /*ARGSUSED*/ static int power_open(dev_t *devp, int openflags, int otyp, cred_t *credp) { struct power_soft_state *softsp; int clone; if (otyp != OTYP_CHR) return (EINVAL); if ((softsp = ddi_get_soft_state(power_state, power_inst)) == NULL) return (ENXIO); mutex_enter(&softsp->power_mutex); for (clone = 1; clone < POWER_MAX_CLONE; clone++) if (!softsp->clones[clone]) break; if (clone == POWER_MAX_CLONE) { cmn_err(CE_WARN, "power_open: No more allocation left " "to create a clone minor."); mutex_exit(&softsp->power_mutex); return (ENXIO); } *devp = makedevice(getmajor(*devp), (power_inst << 8) + clone); softsp->clones[clone] = 1; mutex_exit(&softsp->power_mutex); return (0); } /* * Close the device. */ /*ARGSUSED*/ static int power_close(dev_t dev, int openflags, int otyp, cred_t *credp) { struct power_soft_state *softsp; int clone; if (otyp != OTYP_CHR) return (EINVAL); if ((softsp = ddi_get_soft_state(power_state, power_inst)) == NULL) return (ENXIO); clone = POWER_MINOR_TO_CLONE(getminor(dev)); mutex_enter(&softsp->power_mutex); if (softsp->monitor_on == clone) softsp->monitor_on = 0; softsp->clones[clone] = 0; mutex_exit(&softsp->power_mutex); return (0); } /*ARGSUSED*/ static int power_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *cred_p, int *rval_p) { struct power_soft_state *softsp; int clone; if ((softsp = ddi_get_soft_state(power_state, power_inst)) == NULL) return (ENXIO); clone = POWER_MINOR_TO_CLONE(getminor(dev)); switch (cmd) { case PB_BEGIN_MONITOR: mutex_enter(&softsp->power_mutex); if (softsp->monitor_on) { mutex_exit(&softsp->power_mutex); return (EBUSY); } softsp->monitor_on = clone; mutex_exit(&softsp->power_mutex); return (0); case PB_END_MONITOR: mutex_enter(&softsp->power_mutex); /* * If PB_END_MONITOR is called without first * calling PB_BEGIN_MONITOR, an error will be * returned. */ if (!softsp->monitor_on) { mutex_exit(&softsp->power_mutex); return (ENXIO); } /* * This clone is not monitoring the button. */ if (softsp->monitor_on != clone) { mutex_exit(&softsp->power_mutex); return (EINVAL); } softsp->monitor_on = 0; mutex_exit(&softsp->power_mutex); return (0); case PB_GET_EVENTS: mutex_enter(&softsp->power_mutex); if (ddi_copyout((void *)&softsp->events, (void *)arg, sizeof (int), mode) != 0) { mutex_exit(&softsp->power_mutex); return (EFAULT); } /* * This ioctl returned the events detected since last * call. Note that any application can get the events * and clear the event register. */ softsp->events = 0; mutex_exit(&softsp->power_mutex); return (0); /* * This ioctl is used by the test suite. */ case PB_CREATE_BUTTON_EVENT: #ifdef ACPI_POWER_BUTTON (UINT32)power_acpi_fixed_event((void *)softsp); #else if (softsp->power_regs_mapped) { mutex_enter(&softsp->power_intr_mutex); softsp->power_btn_ioctl = B_TRUE; mutex_exit(&softsp->power_intr_mutex); } (void) power_high_intr((caddr_t)softsp); #endif /* ACPI_POWER_BUTTON */ return (0); default: return (ENOTTY); } } /*ARGSUSED*/ static int power_chpoll(dev_t dev, short events, int anyyet, short *reventsp, struct pollhead **phpp) { struct power_soft_state *softsp; if ((softsp = ddi_get_soft_state(power_state, power_inst)) == NULL) return (ENXIO); mutex_enter(&softsp->power_mutex); *reventsp = 0; if (softsp->events) *reventsp = POLLRDNORM|POLLIN; else { if (!anyyet) *phpp = &softsp->pollhd; } mutex_exit(&softsp->power_mutex); return (0); } static void power_log_message(void) { struct power_soft_state *softsp; if ((softsp = ddi_get_soft_state(power_state, power_inst)) == NULL) { cmn_err(CE_WARN, "Failed to get internal state!"); return; } mutex_enter(&softsp->power_mutex); softsp->shutdown_pending = 0; cmn_err(CE_WARN, "Failed to shut down the system!"); mutex_exit(&softsp->power_mutex); } #ifdef ACPI_POWER_BUTTON /* * Given a handle to a device object, locate a _PRW object * if present and fetch the GPE info for this device object */ static ACPI_STATUS power_get_prw_gpe(ACPI_HANDLE dev, ACPI_HANDLE *gpe_dev, UINT32 *gpe_num) { ACPI_BUFFER buf; ACPI_STATUS status; ACPI_HANDLE prw; ACPI_OBJECT *gpe; /* * Evaluate _PRW if present */ status = AcpiGetHandle(dev, "_PRW", &prw); if (status != AE_OK) return (status); buf.Length = ACPI_ALLOCATE_BUFFER; status = AcpiEvaluateObjectTyped(prw, NULL, NULL, &buf, ACPI_TYPE_PACKAGE); if (status != AE_OK) return (status); /* * Sanity-check the package; need at least two elements */ status = AE_ERROR; if (((ACPI_OBJECT *)buf.Pointer)->Package.Count < 2) goto done; gpe = &((ACPI_OBJECT *)buf.Pointer)->Package.Elements[0]; if (gpe->Type == ACPI_TYPE_INTEGER) { *gpe_dev = NULL; *gpe_num = gpe->Integer.Value; status = AE_OK; } else if (gpe->Type == ACPI_TYPE_PACKAGE) { if ((gpe->Package.Count != 2) || (gpe->Package.Elements[0].Type != ACPI_TYPE_DEVICE) || (gpe->Package.Elements[1].Type != ACPI_TYPE_INTEGER)) goto done; *gpe_dev = gpe->Package.Elements[0].Reference.Handle; *gpe_num = gpe->Package.Elements[1].Integer.Value; status = AE_OK; } done: AcpiOsFree(buf.Pointer); return (status); } /* * */ /*ARGSUSED*/ static ACPI_STATUS acpi_device(ACPI_HANDLE obj, UINT32 nesting, void *context, void **rv) { *((ACPI_HANDLE *)context) = obj; return (AE_OK); } /* * */ static ACPI_HANDLE probe_acpi_pwrbutton() { ACPI_HANDLE obj = NULL; (void) AcpiGetDevices("PNP0C0C", acpi_device, (void *)&obj, NULL); return (obj); } static UINT32 power_acpi_fixed_event(void *ctx) { mutex_enter(&((struct power_soft_state *)ctx)->power_intr_mutex); power_button_pressed++; mutex_exit(&((struct power_soft_state *)ctx)->power_intr_mutex); /* post softint to issue timeout for power button action */ if (((struct power_soft_state *)ctx)->softintr_id != NULL) ddi_trigger_softintr( ((struct power_soft_state *)ctx)->softintr_id); return (AE_OK); } /*ARGSUSED*/ static void power_acpi_notify_event(ACPI_HANDLE obj, UINT32 val, void *ctx) { if (val == 0x80) (void) power_acpi_fixed_event(ctx); } /* * */ static int power_probe_method_button(struct power_soft_state *softsp) { ACPI_HANDLE button_obj; UINT32 gpe_num; ACPI_HANDLE gpe_dev; button_obj = probe_acpi_pwrbutton(); softsp->button_obj = button_obj; /* remember obj */ if ((button_obj != NULL) && (power_get_prw_gpe(button_obj, &gpe_dev, &gpe_num) == AE_OK) && (AcpiSetGpeType(gpe_dev, gpe_num, ACPI_GPE_TYPE_WAKE_RUN) == AE_OK) && (AcpiEnableGpe(gpe_dev, gpe_num, ACPI_NOT_ISR) == AE_OK) && (AcpiInstallNotifyHandler(button_obj, ACPI_DEVICE_NOTIFY, power_acpi_notify_event, (void*)softsp) == AE_OK)) return (1); return (0); } /* * */ static int power_probe_fixed_button(struct power_soft_state *softsp) { FADT_DESCRIPTOR *fadt; if (AcpiGetFirmwareTable(FADT_SIG, 1, ACPI_LOGICAL_ADDRESSING, (ACPI_TABLE_HEADER **) &fadt) != AE_OK) return (0); if (!fadt->PwrButton) { if (AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, power_acpi_fixed_event, (void *)softsp) == AE_OK) return (1); } return (0); } /* * */ static int power_attach_acpi(struct power_soft_state *softsp) { /* * If we've attached anything already, return an error */ if ((softsp->gpe_attached) || (softsp->fixed_attached)) return (DDI_FAILURE); /* * attempt to attach both a fixed-event handler and a GPE * handler; remember what we got */ softsp->fixed_attached = (power_probe_fixed_button(softsp) != 0); softsp->gpe_attached = (power_probe_method_button(softsp) != 0); /* * If we've attached anything now, return success */ if ((softsp->gpe_attached) || (softsp->fixed_attached)) return (DDI_SUCCESS); return (DDI_FAILURE); } /* * */ static void power_detach_acpi(struct power_soft_state *softsp) { if (softsp->gpe_attached) { if (AcpiRemoveNotifyHandler(softsp->button_obj, ACPI_DEVICE_NOTIFY, power_acpi_notify_event) != AE_OK) cmn_err(CE_WARN, "!power: failed to remove Notify" " handler"); } if (softsp->fixed_attached) { if (AcpiRemoveFixedEventHandler(ACPI_EVENT_POWER_BUTTON, power_acpi_fixed_event) != AE_OK) cmn_err(CE_WARN, "!power: failed to remove Power" " Button handler"); } } #else /* * power button register definitions for acpi register on m1535d */ #define M1535D_PWR_BTN_REG_01 0x1 #define M1535D_PWR_BTN_EVENT_FLAG 0x1 static int power_setup_m1535_regs(dev_info_t *dip, struct power_soft_state *softsp) { ddi_device_acc_attr_t attr; uint8_t *reg_base; attr.devacc_attr_version = DDI_DEVICE_ATTR_V0; attr.devacc_attr_endian_flags = DDI_STRUCTURE_LE_ACC; attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC; if (ddi_regs_map_setup(dip, 0, (caddr_t *)®_base, 0, 0, &attr, &softsp->power_rhandle) != DDI_SUCCESS) { return (DDI_FAILURE); } softsp->power_btn_reg = ®_base[M1535D_PWR_BTN_REG_01]; softsp->power_btn_bit = M1535D_PWR_BTN_EVENT_FLAG; softsp->power_regs_mapped = B_TRUE; return (DDI_SUCCESS); } /* * Setup register map for the power button * NOTE:- we only map registers for platforms * binding with the ali1535d+-power compatible * property. */ static int power_setup_regs(struct power_soft_state *softsp) { char *binding_name; softsp->power_regs_mapped = B_FALSE; softsp->power_btn_ioctl = B_FALSE; binding_name = ddi_binding_name(softsp->dip); if (strcmp(binding_name, "ali1535d+-power") == 0) return (power_setup_m1535_regs(softsp->dip, softsp)); return (DDI_SUCCESS); } static void power_free_regs(struct power_soft_state *softsp) { if (softsp->power_regs_mapped) ddi_regs_map_free(&softsp->power_rhandle); } #endif /* ACPI_POWER_BUTTON */