64ab71ccbd
different "platforms" on x86 machines. The existing code already handles having two platforms: ACPI and legacy. However, the existing approach was rather hardcoded and difficult to extend. These changes take the approach that each x86 hardware platform should provide its own nexus(4) driver (it can inherit most of its behavior from the default legacy nexus(4) driver) which is responsible for probing for the platform and performing appropriate platform-specific setup during attach (such as adding a platform-specific bus device). This does mean changing the x86 platform busses to no longer use an identify routine for probing, but to move that logic into their matching nexus(4) driver instead. - Make the default nexus(4) driver in nexus.c on i386 and amd64 handle the legacy platform. It's probe routine now returns BUS_PROBE_GENERIC so it can be overriden. - Expose a nexus_init_resources() routine which initializes the various resource managers so that subclassed nexus(4) drivers can invoke it from their attach routine. - The legacy nexus(4) driver explicitly adds a legacy0 device in its attach routine. - The ACPI driver no longer contains an new-bus identify method. Instead it exposes a public function (acpi_identify()) which is a probe routine that the MD nexus(4) drivers can use to probe for ACPI. All of the probe logic in acpi_probe() is now moved into acpi_identify() and acpi_probe() is just a stub. - On i386 and amd64, an ACPI-specific nexus(4) driver checks for ACPI via acpi_identify() and claims the nexus0 device if the probe succeeds. It then explicitly adds an acpi0 device in its attach routine. - The legacy(4) driver no longer knows anything about the acpi0 device. - On ia64 if acpi_identify() fails you basically end up with no devices. This matches the previous behavior where the old acpi_identify() would fail to add an acpi0 device again leaving you with no devices. Discussed with: imp Silence on: arch@
3395 lines
92 KiB
C
3395 lines
92 KiB
C
/*-
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* Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
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* Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
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* Copyright (c) 2000, 2001 Michael Smith
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/fcntl.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/ioccom.h>
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#include <sys/reboot.h>
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#include <sys/sysctl.h>
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#include <sys/ctype.h>
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#include <sys/linker.h>
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#include <sys/power.h>
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#include <sys/sbuf.h>
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#include <sys/smp.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <isa/isavar.h>
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#include <isa/pnpvar.h>
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#include <contrib/dev/acpica/acpi.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/acpica/acpiio.h>
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#include <contrib/dev/acpica/achware.h>
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#include <contrib/dev/acpica/acnamesp.h>
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#include "pci_if.h"
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pci_private.h>
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#include <vm/vm_param.h>
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MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
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/* Hooks for the ACPI CA debugging infrastructure */
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#define _COMPONENT ACPI_BUS
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ACPI_MODULE_NAME("ACPI")
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static d_open_t acpiopen;
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static d_close_t acpiclose;
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static d_ioctl_t acpiioctl;
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static struct cdevsw acpi_cdevsw = {
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.d_version = D_VERSION,
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.d_open = acpiopen,
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.d_close = acpiclose,
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.d_ioctl = acpiioctl,
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.d_name = "acpi",
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};
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/* Global mutex for locking access to the ACPI subsystem. */
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struct mtx acpi_mutex;
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/* Bitmap of device quirks. */
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int acpi_quirks;
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static int acpi_modevent(struct module *mod, int event, void *junk);
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static int acpi_probe(device_t dev);
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static int acpi_attach(device_t dev);
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static int acpi_suspend(device_t dev);
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static int acpi_resume(device_t dev);
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static int acpi_shutdown(device_t dev);
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static device_t acpi_add_child(device_t bus, int order, const char *name,
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int unit);
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static int acpi_print_child(device_t bus, device_t child);
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static void acpi_probe_nomatch(device_t bus, device_t child);
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static void acpi_driver_added(device_t dev, driver_t *driver);
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static int acpi_read_ivar(device_t dev, device_t child, int index,
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uintptr_t *result);
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static int acpi_write_ivar(device_t dev, device_t child, int index,
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uintptr_t value);
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static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
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static int acpi_sysres_alloc(device_t dev);
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static struct resource *acpi_alloc_resource(device_t bus, device_t child,
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int type, int *rid, u_long start, u_long end,
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u_long count, u_int flags);
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static int acpi_release_resource(device_t bus, device_t child, int type,
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int rid, struct resource *r);
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static void acpi_delete_resource(device_t bus, device_t child, int type,
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int rid);
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static uint32_t acpi_isa_get_logicalid(device_t dev);
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static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
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static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
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static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
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ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
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ACPI_BUFFER *ret);
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static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
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int *dstate);
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static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
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void *context, void **retval);
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static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
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int max_depth, acpi_scan_cb_t user_fn, void *arg);
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static int acpi_set_powerstate_method(device_t bus, device_t child,
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int state);
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static int acpi_isa_pnp_probe(device_t bus, device_t child,
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struct isa_pnp_id *ids);
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static void acpi_probe_children(device_t bus);
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static int acpi_probe_order(ACPI_HANDLE handle, int *order);
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static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
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void *context, void **status);
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static BOOLEAN acpi_MatchHid(ACPI_HANDLE h, const char *hid);
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static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
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static void acpi_shutdown_final(void *arg, int howto);
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static void acpi_enable_fixed_events(struct acpi_softc *sc);
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static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
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static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
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static int acpi_wake_prep_walk(int sstate);
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static int acpi_wake_sysctl_walk(device_t dev);
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static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
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static void acpi_system_eventhandler_sleep(void *arg, int state);
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static void acpi_system_eventhandler_wakeup(void *arg, int state);
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static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
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static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
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static int acpi_pm_func(u_long cmd, void *arg, ...);
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static int acpi_child_location_str_method(device_t acdev, device_t child,
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char *buf, size_t buflen);
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static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
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char *buf, size_t buflen);
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static device_method_t acpi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_probe),
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DEVMETHOD(device_attach, acpi_attach),
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DEVMETHOD(device_shutdown, acpi_shutdown),
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DEVMETHOD(device_detach, bus_generic_detach),
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DEVMETHOD(device_suspend, acpi_suspend),
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DEVMETHOD(device_resume, acpi_resume),
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/* Bus interface */
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DEVMETHOD(bus_add_child, acpi_add_child),
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DEVMETHOD(bus_print_child, acpi_print_child),
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DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
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DEVMETHOD(bus_driver_added, acpi_driver_added),
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DEVMETHOD(bus_read_ivar, acpi_read_ivar),
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DEVMETHOD(bus_write_ivar, acpi_write_ivar),
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DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
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DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
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DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
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DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
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DEVMETHOD(bus_release_resource, acpi_release_resource),
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DEVMETHOD(bus_delete_resource, acpi_delete_resource),
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DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
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DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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/* ACPI bus */
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DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
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DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
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DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
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DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
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/* PCI emulation */
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DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
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/* ISA emulation */
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DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
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{0, 0}
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};
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static driver_t acpi_driver = {
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"acpi",
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acpi_methods,
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sizeof(struct acpi_softc),
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};
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static devclass_t acpi_devclass;
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DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
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MODULE_VERSION(acpi, 1);
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ACPI_SERIAL_DECL(acpi, "ACPI root bus");
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/* Local pools for managing system resources for ACPI child devices. */
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static struct rman acpi_rman_io, acpi_rman_mem;
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#define ACPI_MINIMUM_AWAKETIME 5
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static const char* sleep_state_names[] = {
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"S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
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/* Holds the description of the acpi0 device. */
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static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
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SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
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static char acpi_ca_version[12];
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SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
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acpi_ca_version, 0, "Version of Intel ACPI-CA");
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/*
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* Allow override of whether methods execute in parallel or not.
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* Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
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* errors for AML that really can't handle parallel method execution.
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* It is off by default since this breaks recursive methods and
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* some IBMs use such code.
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*/
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static int acpi_serialize_methods;
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TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
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/* Power devices off and on in suspend and resume. XXX Remove once tested. */
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static int acpi_do_powerstate = 1;
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TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
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SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
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&acpi_do_powerstate, 1, "Turn off devices when suspending.");
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/* Allow users to override quirks. */
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TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
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static int acpi_susp_bounce;
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SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
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&acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
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/*
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* ACPI can only be loaded as a module by the loader; activating it after
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* system bootstrap time is not useful, and can be fatal to the system.
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* It also cannot be unloaded, since the entire system bus heirarchy hangs
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* off it.
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*/
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static int
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acpi_modevent(struct module *mod, int event, void *junk)
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{
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switch (event) {
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case MOD_LOAD:
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if (!cold) {
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printf("The ACPI driver cannot be loaded after boot.\n");
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return (EPERM);
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}
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break;
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case MOD_UNLOAD:
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if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
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return (EBUSY);
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break;
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default:
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break;
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}
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return (0);
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}
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/*
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* Perform early initialization.
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*/
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ACPI_STATUS
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acpi_Startup(void)
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{
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static int started = 0;
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ACPI_STATUS status;
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int val;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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/* Only run the startup code once. The MADT driver also calls this. */
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if (started)
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return_VALUE (AE_OK);
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started = 1;
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/*
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* Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
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* if more tables exist.
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*/
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if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
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printf("ACPI: Table initialisation failed: %s\n",
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AcpiFormatException(status));
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return_VALUE (status);
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}
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/* Set up any quirks we have for this system. */
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if (acpi_quirks == ACPI_Q_OK)
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acpi_table_quirks(&acpi_quirks);
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/* If the user manually set the disabled hint to 0, force-enable ACPI. */
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if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
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acpi_quirks &= ~ACPI_Q_BROKEN;
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if (acpi_quirks & ACPI_Q_BROKEN) {
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printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
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status = AE_SUPPORT;
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}
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return_VALUE (status);
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}
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/*
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* Detect ACPI and perform early initialisation.
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*/
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int
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acpi_identify(void)
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{
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ACPI_TABLE_RSDP *rsdp;
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ACPI_TABLE_HEADER *rsdt;
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ACPI_PHYSICAL_ADDRESS paddr;
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struct sbuf sb;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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if (!cold)
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return (ENXIO);
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/* Check that we haven't been disabled with a hint. */
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if (resource_disabled("acpi", 0))
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return (ENXIO);
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/* Check for other PM systems. */
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if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
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power_pm_get_type() != POWER_PM_TYPE_ACPI) {
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printf("ACPI identify failed, other PM system enabled.\n");
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return (ENXIO);
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}
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/* Initialize root tables. */
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if (ACPI_FAILURE(acpi_Startup())) {
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printf("ACPI: Try disabling either ACPI or apic support.\n");
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return (ENXIO);
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}
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if ((paddr = AcpiOsGetRootPointer()) == 0 ||
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(rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
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return (ENXIO);
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if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
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paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
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else
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paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
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AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
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if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
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return (ENXIO);
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sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
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sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
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sbuf_trim(&sb);
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sbuf_putc(&sb, ' ');
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sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
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sbuf_trim(&sb);
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sbuf_finish(&sb);
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sbuf_delete(&sb);
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AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
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snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
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return (0);
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}
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/*
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* Fetch some descriptive data from ACPI to put in our attach message.
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*/
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static int
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acpi_probe(device_t dev)
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{
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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device_set_desc(dev, acpi_desc);
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return_VALUE (0);
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}
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|
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static int
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acpi_attach(device_t dev)
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{
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struct acpi_softc *sc;
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ACPI_TABLE_FACS *facs;
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ACPI_STATUS status;
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int error, state;
|
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UINT32 flags;
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UINT8 TypeA, TypeB;
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char *env;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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sc = device_get_softc(dev);
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sc->acpi_dev = dev;
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callout_init(&sc->susp_force_to, TRUE);
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error = ENXIO;
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/* Initialize resource manager. */
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acpi_rman_io.rm_type = RMAN_ARRAY;
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acpi_rman_io.rm_start = 0;
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acpi_rman_io.rm_end = 0xffff;
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acpi_rman_io.rm_descr = "ACPI I/O ports";
|
|
if (rman_init(&acpi_rman_io) != 0)
|
|
panic("acpi rman_init IO ports failed");
|
|
acpi_rman_mem.rm_type = RMAN_ARRAY;
|
|
acpi_rman_mem.rm_start = 0;
|
|
acpi_rman_mem.rm_end = ~0ul;
|
|
acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
|
|
if (rman_init(&acpi_rman_mem) != 0)
|
|
panic("acpi rman_init memory failed");
|
|
|
|
/* Initialise the ACPI mutex */
|
|
mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
|
|
|
|
/*
|
|
* Set the globals from our tunables. This is needed because ACPI-CA
|
|
* uses UINT8 for some values and we have no tunable_byte.
|
|
*/
|
|
AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
|
|
AcpiGbl_EnableInterpreterSlack = TRUE;
|
|
|
|
/* Start up the ACPI CA subsystem. */
|
|
status = AcpiInitializeSubsystem();
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(dev, "Could not initialize Subsystem: %s\n",
|
|
AcpiFormatException(status));
|
|
goto out;
|
|
}
|
|
|
|
/* Load ACPI name space. */
|
|
status = AcpiLoadTables();
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(dev, "Could not load Namespace: %s\n",
|
|
AcpiFormatException(status));
|
|
goto out;
|
|
}
|
|
|
|
/* Install the default address space handlers. */
|
|
status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
|
|
ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
|
|
AcpiFormatException(status));
|
|
goto out;
|
|
}
|
|
status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
|
|
ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(dev, "Could not initialise SystemIO handler: %s\n",
|
|
AcpiFormatException(status));
|
|
goto out;
|
|
}
|
|
status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
|
|
ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(dev, "could not initialise PciConfig handler: %s\n",
|
|
AcpiFormatException(status));
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Note that some systems (specifically, those with namespace evaluation
|
|
* issues that require the avoidance of parts of the namespace) must
|
|
* avoid running _INI and _STA on everything, as well as dodging the final
|
|
* object init pass.
|
|
*
|
|
* For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
|
|
*
|
|
* XXX We should arrange for the object init pass after we have attached
|
|
* all our child devices, but on many systems it works here.
|
|
*/
|
|
flags = 0;
|
|
if (testenv("debug.acpi.avoid"))
|
|
flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
|
|
|
|
/* Bring the hardware and basic handlers online. */
|
|
if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
|
|
device_printf(dev, "Could not enable ACPI: %s\n",
|
|
AcpiFormatException(status));
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Call the ECDT probe function to provide EC functionality before
|
|
* the namespace has been evaluated.
|
|
*
|
|
* XXX This happens before the sysresource devices have been probed and
|
|
* attached so its resources come from nexus0. In practice, this isn't
|
|
* a problem but should be addressed eventually.
|
|
*/
|
|
acpi_ec_ecdt_probe(dev);
|
|
|
|
/* Bring device objects and regions online. */
|
|
if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
|
|
device_printf(dev, "Could not initialize ACPI objects: %s\n",
|
|
AcpiFormatException(status));
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Setup our sysctl tree.
|
|
*
|
|
* XXX: This doesn't check to make sure that none of these fail.
|
|
*/
|
|
sysctl_ctx_init(&sc->acpi_sysctl_ctx);
|
|
sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
|
|
SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
|
|
device_get_name(dev), CTLFLAG_RD, 0, "");
|
|
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
|
|
0, 0, acpi_supported_sleep_state_sysctl, "A", "");
|
|
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
|
|
&sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
|
|
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
|
|
&sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
|
|
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
|
|
&sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
|
|
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
|
|
&sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
|
|
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
|
|
&sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
|
|
SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
|
|
"sleep delay");
|
|
SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
|
|
SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
|
|
SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
|
|
&sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
|
|
SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
|
|
OID_AUTO, "handle_reboot", CTLFLAG_RW,
|
|
&sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
|
|
|
|
/*
|
|
* Default to 1 second before sleeping to give some machines time to
|
|
* stabilize.
|
|
*/
|
|
sc->acpi_sleep_delay = 1;
|
|
if (bootverbose)
|
|
sc->acpi_verbose = 1;
|
|
if ((env = getenv("hw.acpi.verbose")) != NULL) {
|
|
if (strcmp(env, "0") != 0)
|
|
sc->acpi_verbose = 1;
|
|
freeenv(env);
|
|
}
|
|
|
|
/* Only enable S4BIOS by default if the FACS says it is available. */
|
|
status = AcpiGetTable(ACPI_SIG_FACS, 0, (ACPI_TABLE_HEADER **)&facs);
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(dev, "couldn't get FACS: %s\n",
|
|
AcpiFormatException(status));
|
|
error = ENXIO;
|
|
goto out;
|
|
}
|
|
if (facs->Flags & ACPI_FACS_S4_BIOS_PRESENT)
|
|
sc->acpi_s4bios = 1;
|
|
|
|
/*
|
|
* Dispatch the default sleep state to devices. The lid switch is set
|
|
* to NONE by default to avoid surprising users.
|
|
*/
|
|
sc->acpi_power_button_sx = ACPI_STATE_S5;
|
|
sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
|
|
sc->acpi_standby_sx = ACPI_STATE_S1;
|
|
sc->acpi_suspend_sx = ACPI_STATE_S3;
|
|
|
|
/* Pick the first valid sleep state for the sleep button default. */
|
|
sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
|
|
for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
|
|
if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
|
|
sc->acpi_sleep_button_sx = state;
|
|
break;
|
|
}
|
|
|
|
acpi_enable_fixed_events(sc);
|
|
|
|
/*
|
|
* Scan the namespace and attach/initialise children.
|
|
*/
|
|
|
|
/* Register our shutdown handler. */
|
|
EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
|
|
SHUTDOWN_PRI_LAST);
|
|
|
|
/*
|
|
* Register our acpi event handlers.
|
|
* XXX should be configurable eg. via userland policy manager.
|
|
*/
|
|
EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
|
|
sc, ACPI_EVENT_PRI_LAST);
|
|
EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
|
|
sc, ACPI_EVENT_PRI_LAST);
|
|
|
|
/* Flag our initial states. */
|
|
sc->acpi_enabled = 1;
|
|
sc->acpi_sstate = ACPI_STATE_S0;
|
|
sc->acpi_sleep_disabled = 0;
|
|
|
|
/* Create the control device */
|
|
sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
|
|
"acpi");
|
|
sc->acpi_dev_t->si_drv1 = sc;
|
|
|
|
if ((error = acpi_machdep_init(dev)))
|
|
goto out;
|
|
|
|
/* Register ACPI again to pass the correct argument of pm_func. */
|
|
power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
|
|
|
|
if (!acpi_disabled("bus"))
|
|
acpi_probe_children(dev);
|
|
|
|
error = 0;
|
|
|
|
out:
|
|
return_VALUE (error);
|
|
}
|
|
|
|
static int
|
|
acpi_suspend(device_t dev)
|
|
{
|
|
device_t child, *devlist;
|
|
int error, i, numdevs, pstate;
|
|
|
|
GIANT_REQUIRED;
|
|
|
|
/* First give child devices a chance to suspend. */
|
|
error = bus_generic_suspend(dev);
|
|
if (error)
|
|
return (error);
|
|
|
|
/*
|
|
* Now, set them into the appropriate power state, usually D3. If the
|
|
* device has an _SxD method for the next sleep state, use that power
|
|
* state instead.
|
|
*/
|
|
device_get_children(dev, &devlist, &numdevs);
|
|
for (i = 0; i < numdevs; i++) {
|
|
/* If the device is not attached, we've powered it down elsewhere. */
|
|
child = devlist[i];
|
|
if (!device_is_attached(child))
|
|
continue;
|
|
|
|
/*
|
|
* Default to D3 for all sleep states. The _SxD method is optional
|
|
* so set the powerstate even if it's absent.
|
|
*/
|
|
pstate = PCI_POWERSTATE_D3;
|
|
error = acpi_device_pwr_for_sleep(device_get_parent(child),
|
|
child, &pstate);
|
|
if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
|
|
pci_set_powerstate(child, pstate);
|
|
}
|
|
free(devlist, M_TEMP);
|
|
error = 0;
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
acpi_resume(device_t dev)
|
|
{
|
|
ACPI_HANDLE handle;
|
|
int i, numdevs;
|
|
device_t child, *devlist;
|
|
|
|
GIANT_REQUIRED;
|
|
|
|
/*
|
|
* Put all devices in D0 before resuming them. Call _S0D on each one
|
|
* since some systems expect this.
|
|
*/
|
|
device_get_children(dev, &devlist, &numdevs);
|
|
for (i = 0; i < numdevs; i++) {
|
|
child = devlist[i];
|
|
handle = acpi_get_handle(child);
|
|
if (handle)
|
|
AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
|
|
if (device_is_attached(child) && acpi_do_powerstate)
|
|
pci_set_powerstate(child, PCI_POWERSTATE_D0);
|
|
}
|
|
free(devlist, M_TEMP);
|
|
|
|
return (bus_generic_resume(dev));
|
|
}
|
|
|
|
static int
|
|
acpi_shutdown(device_t dev)
|
|
{
|
|
|
|
GIANT_REQUIRED;
|
|
|
|
/* Allow children to shutdown first. */
|
|
bus_generic_shutdown(dev);
|
|
|
|
/*
|
|
* Enable any GPEs that are able to power-on the system (i.e., RTC).
|
|
* Also, disable any that are not valid for this state (most).
|
|
*/
|
|
acpi_wake_prep_walk(ACPI_STATE_S5);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Handle a new device being added
|
|
*/
|
|
static device_t
|
|
acpi_add_child(device_t bus, int order, const char *name, int unit)
|
|
{
|
|
struct acpi_device *ad;
|
|
device_t child;
|
|
|
|
if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
|
|
return (NULL);
|
|
|
|
resource_list_init(&ad->ad_rl);
|
|
|
|
child = device_add_child_ordered(bus, order, name, unit);
|
|
if (child != NULL)
|
|
device_set_ivars(child, ad);
|
|
else
|
|
free(ad, M_ACPIDEV);
|
|
return (child);
|
|
}
|
|
|
|
static int
|
|
acpi_print_child(device_t bus, device_t child)
|
|
{
|
|
struct acpi_device *adev = device_get_ivars(child);
|
|
struct resource_list *rl = &adev->ad_rl;
|
|
int retval = 0;
|
|
|
|
retval += bus_print_child_header(bus, child);
|
|
retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
|
|
retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
|
|
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
|
|
retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
|
|
if (device_get_flags(child))
|
|
retval += printf(" flags %#x", device_get_flags(child));
|
|
retval += bus_print_child_footer(bus, child);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/*
|
|
* If this device is an ACPI child but no one claimed it, attempt
|
|
* to power it off. We'll power it back up when a driver is added.
|
|
*
|
|
* XXX Disabled for now since many necessary devices (like fdc and
|
|
* ATA) don't claim the devices we created for them but still expect
|
|
* them to be powered up.
|
|
*/
|
|
static void
|
|
acpi_probe_nomatch(device_t bus, device_t child)
|
|
{
|
|
|
|
/* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
|
|
}
|
|
|
|
/*
|
|
* If a new driver has a chance to probe a child, first power it up.
|
|
*
|
|
* XXX Disabled for now (see acpi_probe_nomatch for details).
|
|
*/
|
|
static void
|
|
acpi_driver_added(device_t dev, driver_t *driver)
|
|
{
|
|
device_t child, *devlist;
|
|
int i, numdevs;
|
|
|
|
DEVICE_IDENTIFY(driver, dev);
|
|
device_get_children(dev, &devlist, &numdevs);
|
|
for (i = 0; i < numdevs; i++) {
|
|
child = devlist[i];
|
|
if (device_get_state(child) == DS_NOTPRESENT) {
|
|
/* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
|
|
if (device_probe_and_attach(child) != 0)
|
|
; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
|
|
}
|
|
}
|
|
free(devlist, M_TEMP);
|
|
}
|
|
|
|
/* Location hint for devctl(8) */
|
|
static int
|
|
acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
|
|
size_t buflen)
|
|
{
|
|
struct acpi_device *dinfo = device_get_ivars(child);
|
|
|
|
if (dinfo->ad_handle)
|
|
snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
|
|
else
|
|
snprintf(buf, buflen, "unknown");
|
|
return (0);
|
|
}
|
|
|
|
/* PnP information for devctl(8) */
|
|
static int
|
|
acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
|
|
size_t buflen)
|
|
{
|
|
ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
ACPI_DEVICE_INFO *adinfo;
|
|
struct acpi_device *dinfo = device_get_ivars(child);
|
|
char *end;
|
|
int error;
|
|
|
|
error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
|
|
adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
|
|
if (error)
|
|
snprintf(buf, buflen, "unknown");
|
|
else
|
|
snprintf(buf, buflen, "_HID=%s _UID=%lu",
|
|
(adinfo->Valid & ACPI_VALID_HID) ?
|
|
adinfo->HardwareId.Value : "none",
|
|
(adinfo->Valid & ACPI_VALID_UID) ?
|
|
strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
|
|
if (adinfo)
|
|
AcpiOsFree(adinfo);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Handle per-device ivars
|
|
*/
|
|
static int
|
|
acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
|
|
{
|
|
struct acpi_device *ad;
|
|
|
|
if ((ad = device_get_ivars(child)) == NULL) {
|
|
printf("device has no ivars\n");
|
|
return (ENOENT);
|
|
}
|
|
|
|
/* ACPI and ISA compatibility ivars */
|
|
switch(index) {
|
|
case ACPI_IVAR_HANDLE:
|
|
*(ACPI_HANDLE *)result = ad->ad_handle;
|
|
break;
|
|
case ACPI_IVAR_MAGIC:
|
|
*(uintptr_t *)result = ad->ad_magic;
|
|
break;
|
|
case ACPI_IVAR_PRIVATE:
|
|
*(void **)result = ad->ad_private;
|
|
break;
|
|
case ACPI_IVAR_FLAGS:
|
|
*(int *)result = ad->ad_flags;
|
|
break;
|
|
case ISA_IVAR_VENDORID:
|
|
case ISA_IVAR_SERIAL:
|
|
case ISA_IVAR_COMPATID:
|
|
*(int *)result = -1;
|
|
break;
|
|
case ISA_IVAR_LOGICALID:
|
|
*(int *)result = acpi_isa_get_logicalid(child);
|
|
break;
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
|
|
{
|
|
struct acpi_device *ad;
|
|
|
|
if ((ad = device_get_ivars(child)) == NULL) {
|
|
printf("device has no ivars\n");
|
|
return (ENOENT);
|
|
}
|
|
|
|
switch(index) {
|
|
case ACPI_IVAR_HANDLE:
|
|
ad->ad_handle = (ACPI_HANDLE)value;
|
|
break;
|
|
case ACPI_IVAR_MAGIC:
|
|
ad->ad_magic = (uintptr_t)value;
|
|
break;
|
|
case ACPI_IVAR_PRIVATE:
|
|
ad->ad_private = (void *)value;
|
|
break;
|
|
case ACPI_IVAR_FLAGS:
|
|
ad->ad_flags = (int)value;
|
|
break;
|
|
default:
|
|
panic("bad ivar write request (%d)", index);
|
|
return (ENOENT);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Handle child resource allocation/removal
|
|
*/
|
|
static struct resource_list *
|
|
acpi_get_rlist(device_t dev, device_t child)
|
|
{
|
|
struct acpi_device *ad;
|
|
|
|
ad = device_get_ivars(child);
|
|
return (&ad->ad_rl);
|
|
}
|
|
|
|
/*
|
|
* Pre-allocate/manage all memory and IO resources. Since rman can't handle
|
|
* duplicates, we merge any in the sysresource attach routine.
|
|
*/
|
|
static int
|
|
acpi_sysres_alloc(device_t dev)
|
|
{
|
|
struct resource *res;
|
|
struct resource_list *rl;
|
|
struct resource_list_entry *rle;
|
|
struct rman *rm;
|
|
char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
|
|
device_t *children;
|
|
int child_count, i;
|
|
|
|
/*
|
|
* Probe/attach any sysresource devices. This would be unnecessary if we
|
|
* had multi-pass probe/attach.
|
|
*/
|
|
if (device_get_children(dev, &children, &child_count) != 0)
|
|
return (ENXIO);
|
|
for (i = 0; i < child_count; i++) {
|
|
if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
|
|
device_probe_and_attach(children[i]);
|
|
}
|
|
free(children, M_TEMP);
|
|
|
|
rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
|
|
STAILQ_FOREACH(rle, rl, link) {
|
|
if (rle->res != NULL) {
|
|
device_printf(dev, "duplicate resource for %lx\n", rle->start);
|
|
continue;
|
|
}
|
|
|
|
/* Only memory and IO resources are valid here. */
|
|
switch (rle->type) {
|
|
case SYS_RES_IOPORT:
|
|
rm = &acpi_rman_io;
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
rm = &acpi_rman_mem;
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
/* Pre-allocate resource and add to our rman pool. */
|
|
res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
|
|
&rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
|
|
if (res != NULL) {
|
|
rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
|
|
rle->res = res;
|
|
} else
|
|
device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
|
|
rle->start, rle->count, rle->type);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static struct resource *
|
|
acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
|
|
u_long start, u_long end, u_long count, u_int flags)
|
|
{
|
|
ACPI_RESOURCE ares;
|
|
struct acpi_device *ad = device_get_ivars(child);
|
|
struct resource_list *rl = &ad->ad_rl;
|
|
struct resource_list_entry *rle;
|
|
struct resource *res;
|
|
struct rman *rm;
|
|
|
|
res = NULL;
|
|
|
|
/* We only handle memory and IO resources through rman. */
|
|
switch (type) {
|
|
case SYS_RES_IOPORT:
|
|
rm = &acpi_rman_io;
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
rm = &acpi_rman_mem;
|
|
break;
|
|
default:
|
|
rm = NULL;
|
|
}
|
|
|
|
ACPI_SERIAL_BEGIN(acpi);
|
|
|
|
/*
|
|
* If this is an allocation of the "default" range for a given RID, and
|
|
* we know what the resources for this device are (i.e., they're on the
|
|
* child's resource list), use those start/end values.
|
|
*/
|
|
if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
|
|
rle = resource_list_find(rl, type, *rid);
|
|
if (rle == NULL)
|
|
goto out;
|
|
start = rle->start;
|
|
end = rle->end;
|
|
count = rle->count;
|
|
}
|
|
|
|
/*
|
|
* If this is an allocation of a specific range, see if we can satisfy
|
|
* the request from our system resource regions. If we can't, pass the
|
|
* request up to the parent.
|
|
*/
|
|
if (start + count - 1 == end && rm != NULL)
|
|
res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
|
|
child);
|
|
if (res == NULL) {
|
|
res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
|
|
start, end, count, flags);
|
|
} else {
|
|
rman_set_rid(res, *rid);
|
|
|
|
/* If requested, activate the resource using the parent's method. */
|
|
if (flags & RF_ACTIVE)
|
|
if (bus_activate_resource(child, type, *rid, res) != 0) {
|
|
rman_release_resource(res);
|
|
res = NULL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (res != NULL && device_get_parent(child) == bus)
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
/*
|
|
* Since bus_config_intr() takes immediate effect, we cannot
|
|
* configure the interrupt associated with a device when we
|
|
* parse the resources but have to defer it until a driver
|
|
* actually allocates the interrupt via bus_alloc_resource().
|
|
*
|
|
* XXX: Should we handle the lookup failing?
|
|
*/
|
|
if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
|
|
acpi_config_intr(child, &ares);
|
|
break;
|
|
}
|
|
|
|
out:
|
|
ACPI_SERIAL_END(acpi);
|
|
return (res);
|
|
}
|
|
|
|
static int
|
|
acpi_release_resource(device_t bus, device_t child, int type, int rid,
|
|
struct resource *r)
|
|
{
|
|
struct rman *rm;
|
|
int ret;
|
|
|
|
/* We only handle memory and IO resources through rman. */
|
|
switch (type) {
|
|
case SYS_RES_IOPORT:
|
|
rm = &acpi_rman_io;
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
rm = &acpi_rman_mem;
|
|
break;
|
|
default:
|
|
rm = NULL;
|
|
}
|
|
|
|
ACPI_SERIAL_BEGIN(acpi);
|
|
|
|
/*
|
|
* If this resource belongs to one of our internal managers,
|
|
* deactivate it and release it to the local pool. If it doesn't,
|
|
* pass this request up to the parent.
|
|
*/
|
|
if (rm != NULL && rman_is_region_manager(r, rm)) {
|
|
if (rman_get_flags(r) & RF_ACTIVE) {
|
|
ret = bus_deactivate_resource(child, type, rid, r);
|
|
if (ret != 0)
|
|
goto out;
|
|
}
|
|
ret = rman_release_resource(r);
|
|
} else
|
|
ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
|
|
|
|
out:
|
|
ACPI_SERIAL_END(acpi);
|
|
return (ret);
|
|
}
|
|
|
|
static void
|
|
acpi_delete_resource(device_t bus, device_t child, int type, int rid)
|
|
{
|
|
struct resource_list *rl;
|
|
|
|
rl = acpi_get_rlist(bus, child);
|
|
resource_list_delete(rl, type, rid);
|
|
}
|
|
|
|
/* Allocate an IO port or memory resource, given its GAS. */
|
|
int
|
|
acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
|
|
struct resource **res, u_int flags)
|
|
{
|
|
int error, res_type;
|
|
|
|
error = ENOMEM;
|
|
if (type == NULL || rid == NULL || gas == NULL || res == NULL)
|
|
return (EINVAL);
|
|
|
|
/* We only support memory and IO spaces. */
|
|
switch (gas->SpaceId) {
|
|
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
|
res_type = SYS_RES_MEMORY;
|
|
break;
|
|
case ACPI_ADR_SPACE_SYSTEM_IO:
|
|
res_type = SYS_RES_IOPORT;
|
|
break;
|
|
default:
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/*
|
|
* If the register width is less than 8, assume the BIOS author means
|
|
* it is a bit field and just allocate a byte.
|
|
*/
|
|
if (gas->BitWidth && gas->BitWidth < 8)
|
|
gas->BitWidth = 8;
|
|
|
|
/* Validate the address after we're sure we support the space. */
|
|
if (gas->Address == 0 || gas->BitWidth == 0)
|
|
return (EINVAL);
|
|
|
|
bus_set_resource(dev, res_type, *rid, gas->Address,
|
|
gas->BitWidth / 8);
|
|
*res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
|
|
if (*res != NULL) {
|
|
*type = res_type;
|
|
error = 0;
|
|
} else
|
|
bus_delete_resource(dev, res_type, *rid);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/* Probe _HID and _CID for compatible ISA PNP ids. */
|
|
static uint32_t
|
|
acpi_isa_get_logicalid(device_t dev)
|
|
{
|
|
ACPI_DEVICE_INFO *devinfo;
|
|
ACPI_BUFFER buf;
|
|
ACPI_HANDLE h;
|
|
ACPI_STATUS error;
|
|
u_int32_t pnpid;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
pnpid = 0;
|
|
buf.Pointer = NULL;
|
|
buf.Length = ACPI_ALLOCATE_BUFFER;
|
|
|
|
/* Fetch and validate the HID. */
|
|
if ((h = acpi_get_handle(dev)) == NULL)
|
|
goto out;
|
|
error = AcpiGetObjectInfo(h, &buf);
|
|
if (ACPI_FAILURE(error))
|
|
goto out;
|
|
devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
|
|
|
|
if ((devinfo->Valid & ACPI_VALID_HID) != 0)
|
|
pnpid = PNP_EISAID(devinfo->HardwareId.Value);
|
|
|
|
out:
|
|
if (buf.Pointer != NULL)
|
|
AcpiOsFree(buf.Pointer);
|
|
return_VALUE (pnpid);
|
|
}
|
|
|
|
static int
|
|
acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
|
|
{
|
|
ACPI_DEVICE_INFO *devinfo;
|
|
ACPI_BUFFER buf;
|
|
ACPI_HANDLE h;
|
|
ACPI_STATUS error;
|
|
uint32_t *pnpid;
|
|
int valid, i;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
pnpid = cids;
|
|
valid = 0;
|
|
buf.Pointer = NULL;
|
|
buf.Length = ACPI_ALLOCATE_BUFFER;
|
|
|
|
/* Fetch and validate the CID */
|
|
if ((h = acpi_get_handle(dev)) == NULL)
|
|
goto out;
|
|
error = AcpiGetObjectInfo(h, &buf);
|
|
if (ACPI_FAILURE(error))
|
|
goto out;
|
|
devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
|
|
if ((devinfo->Valid & ACPI_VALID_CID) == 0)
|
|
goto out;
|
|
|
|
if (devinfo->CompatibilityId.Count < count)
|
|
count = devinfo->CompatibilityId.Count;
|
|
for (i = 0; i < count; i++) {
|
|
if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
|
|
continue;
|
|
*pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
|
|
valid++;
|
|
}
|
|
|
|
out:
|
|
if (buf.Pointer != NULL)
|
|
AcpiOsFree(buf.Pointer);
|
|
return_VALUE (valid);
|
|
}
|
|
|
|
static char *
|
|
acpi_device_id_probe(device_t bus, device_t dev, char **ids)
|
|
{
|
|
ACPI_HANDLE h;
|
|
int i;
|
|
|
|
h = acpi_get_handle(dev);
|
|
if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
|
|
return (NULL);
|
|
|
|
/* Try to match one of the array of IDs with a HID or CID. */
|
|
for (i = 0; ids[i] != NULL; i++) {
|
|
if (acpi_MatchHid(h, ids[i]))
|
|
return (ids[i]);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
static ACPI_STATUS
|
|
acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
|
|
ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
|
|
{
|
|
ACPI_HANDLE h;
|
|
|
|
if (dev == NULL)
|
|
h = ACPI_ROOT_OBJECT;
|
|
else if ((h = acpi_get_handle(dev)) == NULL)
|
|
return (AE_BAD_PARAMETER);
|
|
return (AcpiEvaluateObject(h, pathname, parameters, ret));
|
|
}
|
|
|
|
static int
|
|
acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
|
|
{
|
|
struct acpi_softc *sc;
|
|
ACPI_HANDLE handle;
|
|
ACPI_STATUS status;
|
|
char sxd[8];
|
|
int error;
|
|
|
|
sc = device_get_softc(bus);
|
|
handle = acpi_get_handle(dev);
|
|
|
|
/*
|
|
* XXX If we find these devices, don't try to power them down.
|
|
* The serial and IRDA ports on my T23 hang the system when
|
|
* set to D3 and it appears that such legacy devices may
|
|
* need special handling in their drivers.
|
|
*/
|
|
if (handle == NULL ||
|
|
acpi_MatchHid(handle, "PNP0500") ||
|
|
acpi_MatchHid(handle, "PNP0501") ||
|
|
acpi_MatchHid(handle, "PNP0502") ||
|
|
acpi_MatchHid(handle, "PNP0510") ||
|
|
acpi_MatchHid(handle, "PNP0511"))
|
|
return (ENXIO);
|
|
|
|
/*
|
|
* Override next state with the value from _SxD, if present. If no
|
|
* dstate argument was provided, don't fetch the return value.
|
|
*/
|
|
snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
|
|
if (dstate)
|
|
status = acpi_GetInteger(handle, sxd, dstate);
|
|
else
|
|
status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
|
|
|
|
switch (status) {
|
|
case AE_OK:
|
|
error = 0;
|
|
break;
|
|
case AE_NOT_FOUND:
|
|
error = ESRCH;
|
|
break;
|
|
default:
|
|
error = ENXIO;
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/* Callback arg for our implementation of walking the namespace. */
|
|
struct acpi_device_scan_ctx {
|
|
acpi_scan_cb_t user_fn;
|
|
void *arg;
|
|
ACPI_HANDLE parent;
|
|
};
|
|
|
|
static ACPI_STATUS
|
|
acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
|
|
{
|
|
struct acpi_device_scan_ctx *ctx;
|
|
device_t dev, old_dev;
|
|
ACPI_STATUS status;
|
|
ACPI_OBJECT_TYPE type;
|
|
|
|
/*
|
|
* Skip this device if we think we'll have trouble with it or it is
|
|
* the parent where the scan began.
|
|
*/
|
|
ctx = (struct acpi_device_scan_ctx *)arg;
|
|
if (acpi_avoid(h) || h == ctx->parent)
|
|
return (AE_OK);
|
|
|
|
/* If this is not a valid device type (e.g., a method), skip it. */
|
|
if (ACPI_FAILURE(AcpiGetType(h, &type)))
|
|
return (AE_OK);
|
|
if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
|
|
type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
|
|
return (AE_OK);
|
|
|
|
/*
|
|
* Call the user function with the current device. If it is unchanged
|
|
* afterwards, return. Otherwise, we update the handle to the new dev.
|
|
*/
|
|
old_dev = acpi_get_device(h);
|
|
dev = old_dev;
|
|
status = ctx->user_fn(h, &dev, level, ctx->arg);
|
|
if (ACPI_FAILURE(status) || old_dev == dev)
|
|
return (status);
|
|
|
|
/* Remove the old child and its connection to the handle. */
|
|
if (old_dev != NULL) {
|
|
device_delete_child(device_get_parent(old_dev), old_dev);
|
|
AcpiDetachData(h, acpi_fake_objhandler);
|
|
}
|
|
|
|
/* Recreate the handle association if the user created a device. */
|
|
if (dev != NULL)
|
|
AcpiAttachData(h, acpi_fake_objhandler, dev);
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
static ACPI_STATUS
|
|
acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
|
|
acpi_scan_cb_t user_fn, void *arg)
|
|
{
|
|
ACPI_HANDLE h;
|
|
struct acpi_device_scan_ctx ctx;
|
|
|
|
if (acpi_disabled("children"))
|
|
return (AE_OK);
|
|
|
|
if (dev == NULL)
|
|
h = ACPI_ROOT_OBJECT;
|
|
else if ((h = acpi_get_handle(dev)) == NULL)
|
|
return (AE_BAD_PARAMETER);
|
|
ctx.user_fn = user_fn;
|
|
ctx.arg = arg;
|
|
ctx.parent = h;
|
|
return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
|
|
acpi_device_scan_cb, &ctx, NULL));
|
|
}
|
|
|
|
/*
|
|
* Even though ACPI devices are not PCI, we use the PCI approach for setting
|
|
* device power states since it's close enough to ACPI.
|
|
*/
|
|
static int
|
|
acpi_set_powerstate_method(device_t bus, device_t child, int state)
|
|
{
|
|
ACPI_HANDLE h;
|
|
ACPI_STATUS status;
|
|
int error;
|
|
|
|
error = 0;
|
|
h = acpi_get_handle(child);
|
|
if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
|
|
return (EINVAL);
|
|
if (h == NULL)
|
|
return (0);
|
|
|
|
/* Ignore errors if the power methods aren't present. */
|
|
status = acpi_pwr_switch_consumer(h, state);
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
|
|
&& status != AE_BAD_PARAMETER)
|
|
device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
|
|
state, acpi_name(h), AcpiFormatException(status));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
|
|
{
|
|
int result, cid_count, i;
|
|
uint32_t lid, cids[8];
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
/*
|
|
* ISA-style drivers attached to ACPI may persist and
|
|
* probe manually if we return ENOENT. We never want
|
|
* that to happen, so don't ever return it.
|
|
*/
|
|
result = ENXIO;
|
|
|
|
/* Scan the supplied IDs for a match */
|
|
lid = acpi_isa_get_logicalid(child);
|
|
cid_count = acpi_isa_get_compatid(child, cids, 8);
|
|
while (ids && ids->ip_id) {
|
|
if (lid == ids->ip_id) {
|
|
result = 0;
|
|
goto out;
|
|
}
|
|
for (i = 0; i < cid_count; i++) {
|
|
if (cids[i] == ids->ip_id) {
|
|
result = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
ids++;
|
|
}
|
|
|
|
out:
|
|
if (result == 0 && ids->ip_desc)
|
|
device_set_desc(child, ids->ip_desc);
|
|
|
|
return_VALUE (result);
|
|
}
|
|
|
|
/*
|
|
* Scan all of the ACPI namespace and attach child devices.
|
|
*
|
|
* We should only expect to find devices in the \_PR, \_TZ, \_SI, and
|
|
* \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
|
|
* However, in violation of the spec, some systems place their PCI link
|
|
* devices in \, so we have to walk the whole namespace. We check the
|
|
* type of namespace nodes, so this should be ok.
|
|
*/
|
|
static void
|
|
acpi_probe_children(device_t bus)
|
|
{
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
/*
|
|
* Scan the namespace and insert placeholders for all the devices that
|
|
* we find. We also probe/attach any early devices.
|
|
*
|
|
* Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
|
|
* we want to create nodes for all devices, not just those that are
|
|
* currently present. (This assumes that we don't want to create/remove
|
|
* devices as they appear, which might be smarter.)
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
|
|
AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
|
|
bus, NULL);
|
|
|
|
/* Pre-allocate resources for our rman from any sysresource devices. */
|
|
acpi_sysres_alloc(bus);
|
|
|
|
/* Create any static children by calling device identify methods. */
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
|
|
bus_generic_probe(bus);
|
|
|
|
/* Probe/attach all children, created staticly and from the namespace. */
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
|
|
bus_generic_attach(bus);
|
|
|
|
/*
|
|
* Some of these children may have attached others as part of their attach
|
|
* process (eg. the root PCI bus driver), so rescan.
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
|
|
bus_generic_attach(bus);
|
|
|
|
/* Attach wake sysctls. */
|
|
acpi_wake_sysctl_walk(bus);
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* Determine the probe order for a given device and return non-zero if it
|
|
* should be attached immediately.
|
|
*/
|
|
static int
|
|
acpi_probe_order(ACPI_HANDLE handle, int *order)
|
|
{
|
|
ACPI_OBJECT_TYPE type;
|
|
u_int addr;
|
|
|
|
/*
|
|
* 1. I/O port and memory system resource holders
|
|
* 2. Embedded controllers (to handle early accesses)
|
|
* 3. PCI Link Devices
|
|
* 11 - 266. Host-PCI bridges sorted by _ADR
|
|
* 280. CPUs
|
|
*/
|
|
AcpiGetType(handle, &type);
|
|
if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
|
|
*order = 1;
|
|
else if (acpi_MatchHid(handle, "PNP0C09"))
|
|
*order = 2;
|
|
else if (acpi_MatchHid(handle, "PNP0C0F"))
|
|
*order = 3;
|
|
else if (acpi_MatchHid(handle, "PNP0A03")) {
|
|
if (ACPI_SUCCESS(acpi_GetInteger(handle, "_ADR", &addr)))
|
|
*order = 11 + ACPI_ADR_PCI_SLOT(addr) * (PCI_FUNCMAX + 1) +
|
|
ACPI_ADR_PCI_FUNC(addr);
|
|
else
|
|
*order = 11;
|
|
} else if (type == ACPI_TYPE_PROCESSOR)
|
|
*order = 280;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Evaluate a child device and determine whether we might attach a device to
|
|
* it.
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
|
|
{
|
|
ACPI_OBJECT_TYPE type;
|
|
ACPI_HANDLE h;
|
|
device_t bus, child;
|
|
int order;
|
|
char *handle_str, **search;
|
|
static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL};
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
/* Skip this device if we think we'll have trouble with it. */
|
|
if (acpi_avoid(handle))
|
|
return_ACPI_STATUS (AE_OK);
|
|
|
|
bus = (device_t)context;
|
|
if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
|
|
switch (type) {
|
|
case ACPI_TYPE_DEVICE:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_THERMAL:
|
|
case ACPI_TYPE_POWER:
|
|
if (acpi_disabled("children"))
|
|
break;
|
|
|
|
/*
|
|
* Since we scan from \, be sure to skip system scope objects.
|
|
* At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
|
|
*/
|
|
handle_str = acpi_name(handle);
|
|
for (search = scopes; *search != NULL; search++) {
|
|
if (strcmp(handle_str, *search) == 0)
|
|
break;
|
|
}
|
|
if (*search != NULL)
|
|
break;
|
|
|
|
/*
|
|
* Create a placeholder device for this node. Sort the
|
|
* placeholder so that the probe/attach passes will run
|
|
* breadth-first. Orders less than ACPI_DEV_BASE_ORDER
|
|
* are reserved for special objects (i.e., system
|
|
* resources). Orders between ACPI_DEV_BASE_ORDER and 300
|
|
* are used for Host-PCI bridges (and effectively all
|
|
* their children) and CPUs. Larger values are used for
|
|
* all other devices.
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
|
|
order = level * 10 + 300;
|
|
acpi_probe_order(handle, &order);
|
|
child = BUS_ADD_CHILD(bus, order, NULL, -1);
|
|
if (child == NULL)
|
|
break;
|
|
|
|
/* Associate the handle with the device_t and vice versa. */
|
|
acpi_set_handle(child, handle);
|
|
AcpiAttachData(handle, acpi_fake_objhandler, child);
|
|
|
|
/*
|
|
* Check that the device is present. If it's not present,
|
|
* leave it disabled (so that we have a device_t attached to
|
|
* the handle, but we don't probe it).
|
|
*
|
|
* XXX PCI link devices sometimes report "present" but not
|
|
* "functional" (i.e. if disabled). Go ahead and probe them
|
|
* anyway since we may enable them later.
|
|
*/
|
|
if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
|
|
/* Never disable PCI link devices. */
|
|
if (acpi_MatchHid(handle, "PNP0C0F"))
|
|
break;
|
|
/*
|
|
* Docking stations should remain enabled since the system
|
|
* may be undocked at boot.
|
|
*/
|
|
if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
|
|
break;
|
|
|
|
device_disable(child);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Get the device's resource settings and attach them.
|
|
* Note that if the device has _PRS but no _CRS, we need
|
|
* to decide when it's appropriate to try to configure the
|
|
* device. Ignore the return value here; it's OK for the
|
|
* device not to have any resources.
|
|
*/
|
|
acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* AcpiAttachData() requires an object handler but never uses it. This is a
|
|
* placeholder object handler so we can store a device_t in an ACPI_HANDLE.
|
|
*/
|
|
void
|
|
acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data)
|
|
{
|
|
}
|
|
|
|
static void
|
|
acpi_shutdown_final(void *arg, int howto)
|
|
{
|
|
struct acpi_softc *sc;
|
|
ACPI_STATUS status;
|
|
|
|
/*
|
|
* XXX Shutdown code should only run on the BSP (cpuid 0).
|
|
* Some chipsets do not power off the system correctly if called from
|
|
* an AP.
|
|
*/
|
|
sc = arg;
|
|
if ((howto & RB_POWEROFF) != 0) {
|
|
status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
|
|
if (ACPI_FAILURE(status)) {
|
|
printf("AcpiEnterSleepStatePrep failed - %s\n",
|
|
AcpiFormatException(status));
|
|
return;
|
|
}
|
|
printf("Powering system off using ACPI\n");
|
|
ACPI_DISABLE_IRQS();
|
|
status = AcpiEnterSleepState(ACPI_STATE_S5);
|
|
if (ACPI_FAILURE(status)) {
|
|
printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
|
|
} else {
|
|
DELAY(1000000);
|
|
printf("ACPI power-off failed - timeout\n");
|
|
}
|
|
} else if ((howto & RB_HALT) == 0 &&
|
|
(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
|
|
sc->acpi_handle_reboot) {
|
|
/* Reboot using the reset register. */
|
|
status = AcpiHwLowLevelWrite(
|
|
AcpiGbl_FADT.ResetRegister.BitWidth,
|
|
AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
|
|
if (ACPI_FAILURE(status)) {
|
|
printf("ACPI reset failed - %s\n", AcpiFormatException(status));
|
|
} else {
|
|
DELAY(1000000);
|
|
printf("ACPI reset failed - timeout\n");
|
|
}
|
|
} else if (sc->acpi_do_disable && panicstr == NULL) {
|
|
/*
|
|
* Only disable ACPI if the user requested. On some systems, writing
|
|
* the disable value to SMI_CMD hangs the system.
|
|
*/
|
|
printf("Shutting down ACPI\n");
|
|
AcpiTerminate();
|
|
}
|
|
}
|
|
|
|
static void
|
|
acpi_enable_fixed_events(struct acpi_softc *sc)
|
|
{
|
|
static int first_time = 1;
|
|
|
|
/* Enable and clear fixed events and install handlers. */
|
|
if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
|
|
AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
|
|
AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
|
|
acpi_event_power_button_sleep, sc);
|
|
if (first_time)
|
|
device_printf(sc->acpi_dev, "Power Button (fixed)\n");
|
|
}
|
|
if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
|
|
AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
|
|
AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
|
|
acpi_event_sleep_button_sleep, sc);
|
|
if (first_time)
|
|
device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
|
|
}
|
|
|
|
first_time = 0;
|
|
}
|
|
|
|
/*
|
|
* Returns true if the device is actually present and should
|
|
* be attached to. This requires the present, enabled, UI-visible
|
|
* and diagnostics-passed bits to be set.
|
|
*/
|
|
BOOLEAN
|
|
acpi_DeviceIsPresent(device_t dev)
|
|
{
|
|
ACPI_DEVICE_INFO *devinfo;
|
|
ACPI_HANDLE h;
|
|
ACPI_BUFFER buf;
|
|
ACPI_STATUS error;
|
|
int ret;
|
|
|
|
ret = FALSE;
|
|
if ((h = acpi_get_handle(dev)) == NULL)
|
|
return (FALSE);
|
|
buf.Pointer = NULL;
|
|
buf.Length = ACPI_ALLOCATE_BUFFER;
|
|
error = AcpiGetObjectInfo(h, &buf);
|
|
if (ACPI_FAILURE(error))
|
|
return (FALSE);
|
|
devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
|
|
|
|
/* If no _STA method, must be present */
|
|
if ((devinfo->Valid & ACPI_VALID_STA) == 0)
|
|
ret = TRUE;
|
|
|
|
/* Return true for 'present' and 'functioning' */
|
|
if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
|
|
ret = TRUE;
|
|
|
|
AcpiOsFree(buf.Pointer);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Returns true if the battery is actually present and inserted.
|
|
*/
|
|
BOOLEAN
|
|
acpi_BatteryIsPresent(device_t dev)
|
|
{
|
|
ACPI_DEVICE_INFO *devinfo;
|
|
ACPI_HANDLE h;
|
|
ACPI_BUFFER buf;
|
|
ACPI_STATUS error;
|
|
int ret;
|
|
|
|
ret = FALSE;
|
|
if ((h = acpi_get_handle(dev)) == NULL)
|
|
return (FALSE);
|
|
buf.Pointer = NULL;
|
|
buf.Length = ACPI_ALLOCATE_BUFFER;
|
|
error = AcpiGetObjectInfo(h, &buf);
|
|
if (ACPI_FAILURE(error))
|
|
return (FALSE);
|
|
devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
|
|
|
|
/* If no _STA method, must be present */
|
|
if ((devinfo->Valid & ACPI_VALID_STA) == 0)
|
|
ret = TRUE;
|
|
|
|
/* Return true for 'present', 'battery present', and 'functioning' */
|
|
if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
|
|
ret = TRUE;
|
|
|
|
AcpiOsFree(buf.Pointer);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Match a HID string against a handle
|
|
*/
|
|
static BOOLEAN
|
|
acpi_MatchHid(ACPI_HANDLE h, const char *hid)
|
|
{
|
|
ACPI_DEVICE_INFO *devinfo;
|
|
ACPI_BUFFER buf;
|
|
ACPI_STATUS error;
|
|
int ret, i;
|
|
|
|
ret = FALSE;
|
|
if (hid == NULL || h == NULL)
|
|
return (ret);
|
|
buf.Pointer = NULL;
|
|
buf.Length = ACPI_ALLOCATE_BUFFER;
|
|
error = AcpiGetObjectInfo(h, &buf);
|
|
if (ACPI_FAILURE(error))
|
|
return (ret);
|
|
devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
|
|
|
|
if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
|
|
strcmp(hid, devinfo->HardwareId.Value) == 0)
|
|
ret = TRUE;
|
|
else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
|
|
for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
|
|
if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
AcpiOsFree(buf.Pointer);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Return the handle of a named object within our scope, ie. that of (parent)
|
|
* or one if its parents.
|
|
*/
|
|
ACPI_STATUS
|
|
acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
|
|
{
|
|
ACPI_HANDLE r;
|
|
ACPI_STATUS status;
|
|
|
|
/* Walk back up the tree to the root */
|
|
for (;;) {
|
|
status = AcpiGetHandle(parent, path, &r);
|
|
if (ACPI_SUCCESS(status)) {
|
|
*result = r;
|
|
return (AE_OK);
|
|
}
|
|
/* XXX Return error here? */
|
|
if (status != AE_NOT_FOUND)
|
|
return (AE_OK);
|
|
if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
|
|
return (AE_NOT_FOUND);
|
|
parent = r;
|
|
}
|
|
}
|
|
|
|
/* Find the difference between two PM tick counts. */
|
|
uint32_t
|
|
acpi_TimerDelta(uint32_t end, uint32_t start)
|
|
{
|
|
uint32_t delta;
|
|
|
|
if (end >= start)
|
|
delta = end - start;
|
|
else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
|
|
delta = ((0xFFFFFFFF - start) + end + 1);
|
|
else
|
|
delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
|
|
return (delta);
|
|
}
|
|
|
|
/*
|
|
* Allocate a buffer with a preset data size.
|
|
*/
|
|
ACPI_BUFFER *
|
|
acpi_AllocBuffer(int size)
|
|
{
|
|
ACPI_BUFFER *buf;
|
|
|
|
if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
|
|
return (NULL);
|
|
buf->Length = size;
|
|
buf->Pointer = (void *)(buf + 1);
|
|
return (buf);
|
|
}
|
|
|
|
ACPI_STATUS
|
|
acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
|
|
{
|
|
ACPI_OBJECT arg1;
|
|
ACPI_OBJECT_LIST args;
|
|
|
|
arg1.Type = ACPI_TYPE_INTEGER;
|
|
arg1.Integer.Value = number;
|
|
args.Count = 1;
|
|
args.Pointer = &arg1;
|
|
|
|
return (AcpiEvaluateObject(handle, path, &args, NULL));
|
|
}
|
|
|
|
/*
|
|
* Evaluate a path that should return an integer.
|
|
*/
|
|
ACPI_STATUS
|
|
acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
|
|
{
|
|
ACPI_STATUS status;
|
|
ACPI_BUFFER buf;
|
|
ACPI_OBJECT param;
|
|
|
|
if (handle == NULL)
|
|
handle = ACPI_ROOT_OBJECT;
|
|
|
|
/*
|
|
* Assume that what we've been pointed at is an Integer object, or
|
|
* a method that will return an Integer.
|
|
*/
|
|
buf.Pointer = ¶m;
|
|
buf.Length = sizeof(param);
|
|
status = AcpiEvaluateObject(handle, path, NULL, &buf);
|
|
if (ACPI_SUCCESS(status)) {
|
|
if (param.Type == ACPI_TYPE_INTEGER)
|
|
*number = param.Integer.Value;
|
|
else
|
|
status = AE_TYPE;
|
|
}
|
|
|
|
/*
|
|
* In some applications, a method that's expected to return an Integer
|
|
* may instead return a Buffer (probably to simplify some internal
|
|
* arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
|
|
* convert it into an Integer as best we can.
|
|
*
|
|
* This is a hack.
|
|
*/
|
|
if (status == AE_BUFFER_OVERFLOW) {
|
|
if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
|
|
status = AE_NO_MEMORY;
|
|
} else {
|
|
status = AcpiEvaluateObject(handle, path, NULL, &buf);
|
|
if (ACPI_SUCCESS(status))
|
|
status = acpi_ConvertBufferToInteger(&buf, number);
|
|
AcpiOsFree(buf.Pointer);
|
|
}
|
|
}
|
|
return (status);
|
|
}
|
|
|
|
ACPI_STATUS
|
|
acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
|
|
{
|
|
ACPI_OBJECT *p;
|
|
UINT8 *val;
|
|
int i;
|
|
|
|
p = (ACPI_OBJECT *)bufp->Pointer;
|
|
if (p->Type == ACPI_TYPE_INTEGER) {
|
|
*number = p->Integer.Value;
|
|
return (AE_OK);
|
|
}
|
|
if (p->Type != ACPI_TYPE_BUFFER)
|
|
return (AE_TYPE);
|
|
if (p->Buffer.Length > sizeof(int))
|
|
return (AE_BAD_DATA);
|
|
|
|
*number = 0;
|
|
val = p->Buffer.Pointer;
|
|
for (i = 0; i < p->Buffer.Length; i++)
|
|
*number += val[i] << (i * 8);
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Iterate over the elements of an a package object, calling the supplied
|
|
* function for each element.
|
|
*
|
|
* XXX possible enhancement might be to abort traversal on error.
|
|
*/
|
|
ACPI_STATUS
|
|
acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
|
|
void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
|
|
{
|
|
ACPI_OBJECT *comp;
|
|
int i;
|
|
|
|
if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
|
|
return (AE_BAD_PARAMETER);
|
|
|
|
/* Iterate over components */
|
|
i = 0;
|
|
comp = pkg->Package.Elements;
|
|
for (; i < pkg->Package.Count; i++, comp++)
|
|
func(comp, arg);
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Find the (index)th resource object in a set.
|
|
*/
|
|
ACPI_STATUS
|
|
acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
|
|
{
|
|
ACPI_RESOURCE *rp;
|
|
int i;
|
|
|
|
rp = (ACPI_RESOURCE *)buf->Pointer;
|
|
i = index;
|
|
while (i-- > 0) {
|
|
/* Range check */
|
|
if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
|
|
return (AE_BAD_PARAMETER);
|
|
|
|
/* Check for terminator */
|
|
if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
|
|
return (AE_NOT_FOUND);
|
|
rp = ACPI_NEXT_RESOURCE(rp);
|
|
}
|
|
if (resp != NULL)
|
|
*resp = rp;
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Append an ACPI_RESOURCE to an ACPI_BUFFER.
|
|
*
|
|
* Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
|
|
* provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
|
|
* backing block. If the ACPI_RESOURCE is NULL, return an empty set of
|
|
* resources.
|
|
*/
|
|
#define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
|
|
|
|
ACPI_STATUS
|
|
acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
|
|
{
|
|
ACPI_RESOURCE *rp;
|
|
void *newp;
|
|
|
|
/* Initialise the buffer if necessary. */
|
|
if (buf->Pointer == NULL) {
|
|
buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
|
|
if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
|
|
return (AE_NO_MEMORY);
|
|
rp = (ACPI_RESOURCE *)buf->Pointer;
|
|
rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
|
|
rp->Length = 0;
|
|
}
|
|
if (res == NULL)
|
|
return (AE_OK);
|
|
|
|
/*
|
|
* Scan the current buffer looking for the terminator.
|
|
* This will either find the terminator or hit the end
|
|
* of the buffer and return an error.
|
|
*/
|
|
rp = (ACPI_RESOURCE *)buf->Pointer;
|
|
for (;;) {
|
|
/* Range check, don't go outside the buffer */
|
|
if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
|
|
return (AE_BAD_PARAMETER);
|
|
if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
|
|
break;
|
|
rp = ACPI_NEXT_RESOURCE(rp);
|
|
}
|
|
|
|
/*
|
|
* Check the size of the buffer and expand if required.
|
|
*
|
|
* Required size is:
|
|
* size of existing resources before terminator +
|
|
* size of new resource and header +
|
|
* size of terminator.
|
|
*
|
|
* Note that this loop should really only run once, unless
|
|
* for some reason we are stuffing a *really* huge resource.
|
|
*/
|
|
while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
|
|
res->Length + ACPI_RS_SIZE_NO_DATA +
|
|
ACPI_RS_SIZE_MIN) >= buf->Length) {
|
|
if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
|
|
return (AE_NO_MEMORY);
|
|
bcopy(buf->Pointer, newp, buf->Length);
|
|
rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
|
|
((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
|
|
AcpiOsFree(buf->Pointer);
|
|
buf->Pointer = newp;
|
|
buf->Length += buf->Length;
|
|
}
|
|
|
|
/* Insert the new resource. */
|
|
bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
|
|
|
|
/* And add the terminator. */
|
|
rp = ACPI_NEXT_RESOURCE(rp);
|
|
rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
|
|
rp->Length = 0;
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Set interrupt model.
|
|
*/
|
|
ACPI_STATUS
|
|
acpi_SetIntrModel(int model)
|
|
{
|
|
|
|
return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
|
|
}
|
|
|
|
/*
|
|
* DEPRECATED. This interface has serious deficiencies and will be
|
|
* removed.
|
|
*
|
|
* Immediately enter the sleep state. In the old model, acpiconf(8) ran
|
|
* rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
|
|
*/
|
|
ACPI_STATUS
|
|
acpi_SetSleepState(struct acpi_softc *sc, int state)
|
|
{
|
|
static int once;
|
|
|
|
if (!once) {
|
|
printf(
|
|
"warning: acpi_SetSleepState() deprecated, need to update your software\n");
|
|
once = 1;
|
|
}
|
|
return (acpi_EnterSleepState(sc, state));
|
|
}
|
|
|
|
static void
|
|
acpi_sleep_force(void *arg)
|
|
{
|
|
struct acpi_softc *sc;
|
|
|
|
printf("acpi: suspend request timed out, forcing sleep now\n");
|
|
sc = arg;
|
|
if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
|
|
printf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
|
|
}
|
|
|
|
/*
|
|
* Request that the system enter the given suspend state. All /dev/apm
|
|
* devices and devd(8) will be notified. Userland then has a chance to
|
|
* save state and acknowledge the request. The system sleeps once all
|
|
* acks are in.
|
|
*/
|
|
int
|
|
acpi_ReqSleepState(struct acpi_softc *sc, int state)
|
|
{
|
|
struct apm_clone_data *clone;
|
|
|
|
if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
|
|
return (EINVAL);
|
|
|
|
/* S5 (soft-off) should be entered directly with no waiting. */
|
|
if (state == ACPI_STATE_S5) {
|
|
if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
|
|
return (0);
|
|
else
|
|
return (ENXIO);
|
|
}
|
|
|
|
#if !defined(__i386__)
|
|
/* This platform does not support acpi suspend/resume. */
|
|
return (EOPNOTSUPP);
|
|
#endif
|
|
|
|
/* If a suspend request is already in progress, just return. */
|
|
ACPI_LOCK(acpi);
|
|
if (sc->acpi_next_sstate != 0) {
|
|
ACPI_UNLOCK(acpi);
|
|
return (0);
|
|
}
|
|
|
|
/* Record the pending state and notify all apm devices. */
|
|
sc->acpi_next_sstate = state;
|
|
STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
|
|
clone->notify_status = APM_EV_NONE;
|
|
if ((clone->flags & ACPI_EVF_DEVD) == 0) {
|
|
selwakeuppri(&clone->sel_read, PZERO);
|
|
KNOTE_UNLOCKED(&clone->sel_read.si_note, 0);
|
|
}
|
|
}
|
|
|
|
/* If devd(8) is not running, immediately enter the sleep state. */
|
|
if (devctl_process_running() == FALSE) {
|
|
ACPI_UNLOCK(acpi);
|
|
if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
|
|
return (0);
|
|
} else {
|
|
return (ENXIO);
|
|
}
|
|
}
|
|
|
|
/* Now notify devd(8) also. */
|
|
acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
|
|
|
|
/*
|
|
* Set a timeout to fire if userland doesn't ack the suspend request
|
|
* in time. This way we still eventually go to sleep if we were
|
|
* overheating or running low on battery, even if userland is hung.
|
|
* We cancel this timeout once all userland acks are in or the
|
|
* suspend request is aborted.
|
|
*/
|
|
callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
|
|
ACPI_UNLOCK(acpi);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Acknowledge (or reject) a pending sleep state. The caller has
|
|
* prepared for suspend and is now ready for it to proceed. If the
|
|
* error argument is non-zero, it indicates suspend should be cancelled
|
|
* and gives an errno value describing why. Once all votes are in,
|
|
* we suspend the system.
|
|
*/
|
|
int
|
|
acpi_AckSleepState(struct apm_clone_data *clone, int error)
|
|
{
|
|
struct acpi_softc *sc;
|
|
int ret, sleeping;
|
|
|
|
#if !defined(__i386__)
|
|
/* This platform does not support acpi suspend/resume. */
|
|
return (EOPNOTSUPP);
|
|
#endif
|
|
|
|
/* If no pending sleep state, return an error. */
|
|
ACPI_LOCK(acpi);
|
|
sc = clone->acpi_sc;
|
|
if (sc->acpi_next_sstate == 0) {
|
|
ACPI_UNLOCK(acpi);
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* Caller wants to abort suspend process. */
|
|
if (error) {
|
|
sc->acpi_next_sstate = 0;
|
|
callout_stop(&sc->susp_force_to);
|
|
printf("acpi: listener on %s cancelled the pending suspend\n",
|
|
devtoname(clone->cdev));
|
|
ACPI_UNLOCK(acpi);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Mark this device as acking the suspend request. Then, walk through
|
|
* all devices, seeing if they agree yet. We only count devices that
|
|
* are writable since read-only devices couldn't ack the request.
|
|
*/
|
|
clone->notify_status = APM_EV_ACKED;
|
|
sleeping = TRUE;
|
|
STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
|
|
if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
|
|
clone->notify_status != APM_EV_ACKED) {
|
|
sleeping = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If all devices have voted "yes", we will suspend now. */
|
|
if (sleeping)
|
|
callout_stop(&sc->susp_force_to);
|
|
ACPI_UNLOCK(acpi);
|
|
ret = 0;
|
|
if (sleeping) {
|
|
if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
|
|
ret = ENODEV;
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static void
|
|
acpi_sleep_enable(void *arg)
|
|
{
|
|
|
|
((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
|
|
}
|
|
|
|
enum acpi_sleep_state {
|
|
ACPI_SS_NONE,
|
|
ACPI_SS_GPE_SET,
|
|
ACPI_SS_DEV_SUSPEND,
|
|
ACPI_SS_SLP_PREP,
|
|
ACPI_SS_SLEPT,
|
|
};
|
|
|
|
/*
|
|
* Enter the desired system sleep state.
|
|
*
|
|
* Currently we support S1-S5 but S4 is only S4BIOS
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_EnterSleepState(struct acpi_softc *sc, int state)
|
|
{
|
|
ACPI_STATUS status;
|
|
UINT8 TypeA;
|
|
UINT8 TypeB;
|
|
enum acpi_sleep_state slp_state;
|
|
|
|
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
|
|
|
|
/* Re-entry once we're suspending is not allowed. */
|
|
status = AE_OK;
|
|
ACPI_LOCK(acpi);
|
|
if (sc->acpi_sleep_disabled) {
|
|
ACPI_UNLOCK(acpi);
|
|
printf("acpi: suspend request ignored (not ready yet)\n");
|
|
return (AE_ERROR);
|
|
}
|
|
sc->acpi_sleep_disabled = 1;
|
|
ACPI_UNLOCK(acpi);
|
|
|
|
/*
|
|
* Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
|
|
* drivers need this.
|
|
*/
|
|
mtx_lock(&Giant);
|
|
slp_state = ACPI_SS_NONE;
|
|
switch (state) {
|
|
case ACPI_STATE_S1:
|
|
case ACPI_STATE_S2:
|
|
case ACPI_STATE_S3:
|
|
case ACPI_STATE_S4:
|
|
status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
|
|
if (status == AE_NOT_FOUND) {
|
|
device_printf(sc->acpi_dev,
|
|
"Sleep state S%d not supported by BIOS\n", state);
|
|
break;
|
|
} else if (ACPI_FAILURE(status)) {
|
|
device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
|
|
AcpiFormatException(status));
|
|
break;
|
|
}
|
|
|
|
sc->acpi_sstate = state;
|
|
|
|
/* Enable any GPEs as appropriate and requested by the user. */
|
|
acpi_wake_prep_walk(state);
|
|
slp_state = ACPI_SS_GPE_SET;
|
|
|
|
/*
|
|
* Inform all devices that we are going to sleep. If at least one
|
|
* device fails, DEVICE_SUSPEND() automatically resumes the tree.
|
|
*
|
|
* XXX Note that a better two-pass approach with a 'veto' pass
|
|
* followed by a "real thing" pass would be better, but the current
|
|
* bus interface does not provide for this.
|
|
*/
|
|
if (DEVICE_SUSPEND(root_bus) != 0) {
|
|
device_printf(sc->acpi_dev, "device_suspend failed\n");
|
|
break;
|
|
}
|
|
slp_state = ACPI_SS_DEV_SUSPEND;
|
|
|
|
/* If testing device suspend only, back out of everything here. */
|
|
if (acpi_susp_bounce)
|
|
break;
|
|
|
|
status = AcpiEnterSleepStatePrep(state);
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
|
|
AcpiFormatException(status));
|
|
break;
|
|
}
|
|
slp_state = ACPI_SS_SLP_PREP;
|
|
|
|
if (sc->acpi_sleep_delay > 0)
|
|
DELAY(sc->acpi_sleep_delay * 1000000);
|
|
|
|
if (state != ACPI_STATE_S1) {
|
|
acpi_sleep_machdep(sc, state);
|
|
|
|
/* Re-enable ACPI hardware on wakeup from sleep state 4. */
|
|
if (state == ACPI_STATE_S4)
|
|
AcpiEnable();
|
|
} else {
|
|
ACPI_DISABLE_IRQS();
|
|
status = AcpiEnterSleepState(state);
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
|
|
AcpiFormatException(status));
|
|
break;
|
|
}
|
|
}
|
|
slp_state = ACPI_SS_SLEPT;
|
|
break;
|
|
case ACPI_STATE_S5:
|
|
/*
|
|
* Shut down cleanly and power off. This will call us back through the
|
|
* shutdown handlers.
|
|
*/
|
|
shutdown_nice(RB_POWEROFF);
|
|
break;
|
|
case ACPI_STATE_S0:
|
|
default:
|
|
status = AE_BAD_PARAMETER;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Back out state according to how far along we got in the suspend
|
|
* process. This handles both the error and success cases.
|
|
*/
|
|
sc->acpi_next_sstate = 0;
|
|
if (slp_state >= ACPI_SS_GPE_SET) {
|
|
acpi_wake_prep_walk(state);
|
|
sc->acpi_sstate = ACPI_STATE_S0;
|
|
}
|
|
if (slp_state >= ACPI_SS_SLP_PREP)
|
|
AcpiLeaveSleepState(state);
|
|
if (slp_state >= ACPI_SS_DEV_SUSPEND)
|
|
DEVICE_RESUME(root_bus);
|
|
if (slp_state >= ACPI_SS_SLEPT)
|
|
acpi_enable_fixed_events(sc);
|
|
|
|
/* Allow another sleep request after a while. */
|
|
if (state != ACPI_STATE_S5)
|
|
timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
|
|
|
|
/* Run /etc/rc.resume after we are back. */
|
|
acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
|
|
|
|
mtx_unlock(&Giant);
|
|
return_ACPI_STATUS (status);
|
|
}
|
|
|
|
/* Initialize a device's wake GPE. */
|
|
int
|
|
acpi_wake_init(device_t dev, int type)
|
|
{
|
|
struct acpi_prw_data prw;
|
|
|
|
/* Evaluate _PRW to find the GPE. */
|
|
if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
|
|
return (ENXIO);
|
|
|
|
/* Set the requested type for the GPE (runtime, wake, or both). */
|
|
if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
|
|
device_printf(dev, "set GPE type failed\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Enable or disable the device's wake GPE. */
|
|
int
|
|
acpi_wake_set_enable(device_t dev, int enable)
|
|
{
|
|
struct acpi_prw_data prw;
|
|
ACPI_STATUS status;
|
|
int flags;
|
|
|
|
/* Make sure the device supports waking the system and get the GPE. */
|
|
if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
|
|
return (ENXIO);
|
|
|
|
flags = acpi_get_flags(dev);
|
|
if (enable) {
|
|
status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(dev, "enable wake failed\n");
|
|
return (ENXIO);
|
|
}
|
|
acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
|
|
} else {
|
|
status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
|
|
if (ACPI_FAILURE(status)) {
|
|
device_printf(dev, "disable wake failed\n");
|
|
return (ENXIO);
|
|
}
|
|
acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
|
|
{
|
|
struct acpi_prw_data prw;
|
|
device_t dev;
|
|
|
|
/* Check that this is a wake-capable device and get its GPE. */
|
|
if (acpi_parse_prw(handle, &prw) != 0)
|
|
return (ENXIO);
|
|
dev = acpi_get_device(handle);
|
|
|
|
/*
|
|
* The destination sleep state must be less than (i.e., higher power)
|
|
* or equal to the value specified by _PRW. If this GPE cannot be
|
|
* enabled for the next sleep state, then disable it. If it can and
|
|
* the user requested it be enabled, turn on any required power resources
|
|
* and set _PSW.
|
|
*/
|
|
if (sstate > prw.lowest_wake) {
|
|
AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
|
|
if (bootverbose)
|
|
device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
|
|
acpi_name(handle), sstate);
|
|
} else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
|
|
acpi_pwr_wake_enable(handle, 1);
|
|
acpi_SetInteger(handle, "_PSW", 1);
|
|
if (bootverbose)
|
|
device_printf(dev, "wake_prep enabled for %s (S%d)\n",
|
|
acpi_name(handle), sstate);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
|
|
{
|
|
struct acpi_prw_data prw;
|
|
device_t dev;
|
|
|
|
/*
|
|
* Check that this is a wake-capable device and get its GPE. Return
|
|
* now if the user didn't enable this device for wake.
|
|
*/
|
|
if (acpi_parse_prw(handle, &prw) != 0)
|
|
return (ENXIO);
|
|
dev = acpi_get_device(handle);
|
|
if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
|
|
return (0);
|
|
|
|
/*
|
|
* If this GPE couldn't be enabled for the previous sleep state, it was
|
|
* disabled before going to sleep so re-enable it. If it was enabled,
|
|
* clear _PSW and turn off any power resources it used.
|
|
*/
|
|
if (sstate > prw.lowest_wake) {
|
|
AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
|
|
if (bootverbose)
|
|
device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
|
|
} else {
|
|
acpi_SetInteger(handle, "_PSW", 0);
|
|
acpi_pwr_wake_enable(handle, 0);
|
|
if (bootverbose)
|
|
device_printf(dev, "run_prep cleaned up for %s\n",
|
|
acpi_name(handle));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static ACPI_STATUS
|
|
acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
|
|
{
|
|
int sstate;
|
|
|
|
/* If suspending, run the sleep prep function, otherwise wake. */
|
|
sstate = *(int *)context;
|
|
if (AcpiGbl_SystemAwakeAndRunning)
|
|
acpi_wake_sleep_prep(handle, sstate);
|
|
else
|
|
acpi_wake_run_prep(handle, sstate);
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
|
|
static int
|
|
acpi_wake_prep_walk(int sstate)
|
|
{
|
|
ACPI_HANDLE sb_handle;
|
|
|
|
if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
|
|
AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
|
|
acpi_wake_prep, &sstate, NULL);
|
|
return (0);
|
|
}
|
|
|
|
/* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
|
|
static int
|
|
acpi_wake_sysctl_walk(device_t dev)
|
|
{
|
|
int error, i, numdevs;
|
|
device_t *devlist;
|
|
device_t child;
|
|
ACPI_STATUS status;
|
|
|
|
error = device_get_children(dev, &devlist, &numdevs);
|
|
if (error != 0 || numdevs == 0) {
|
|
if (numdevs == 0)
|
|
free(devlist, M_TEMP);
|
|
return (error);
|
|
}
|
|
for (i = 0; i < numdevs; i++) {
|
|
child = devlist[i];
|
|
acpi_wake_sysctl_walk(child);
|
|
if (!device_is_attached(child))
|
|
continue;
|
|
status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
|
|
if (ACPI_SUCCESS(status)) {
|
|
SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
|
|
SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
|
|
"wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
|
|
acpi_wake_set_sysctl, "I", "Device set to wake the system");
|
|
}
|
|
}
|
|
free(devlist, M_TEMP);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Enable or disable wake from userland. */
|
|
static int
|
|
acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
int enable, error;
|
|
device_t dev;
|
|
|
|
dev = (device_t)arg1;
|
|
enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
|
|
|
|
error = sysctl_handle_int(oidp, &enable, 0, req);
|
|
if (error != 0 || req->newptr == NULL)
|
|
return (error);
|
|
if (enable != 0 && enable != 1)
|
|
return (EINVAL);
|
|
|
|
return (acpi_wake_set_enable(dev, enable));
|
|
}
|
|
|
|
/* Parse a device's _PRW into a structure. */
|
|
int
|
|
acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
|
|
{
|
|
ACPI_STATUS status;
|
|
ACPI_BUFFER prw_buffer;
|
|
ACPI_OBJECT *res, *res2;
|
|
int error, i, power_count;
|
|
|
|
if (h == NULL || prw == NULL)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* The _PRW object (7.2.9) is only required for devices that have the
|
|
* ability to wake the system from a sleeping state.
|
|
*/
|
|
error = EINVAL;
|
|
prw_buffer.Pointer = NULL;
|
|
prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
|
|
status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
|
|
if (ACPI_FAILURE(status))
|
|
return (ENOENT);
|
|
res = (ACPI_OBJECT *)prw_buffer.Pointer;
|
|
if (res == NULL)
|
|
return (ENOENT);
|
|
if (!ACPI_PKG_VALID(res, 2))
|
|
goto out;
|
|
|
|
/*
|
|
* Element 1 of the _PRW object:
|
|
* The lowest power system sleeping state that can be entered while still
|
|
* providing wake functionality. The sleeping state being entered must
|
|
* be less than (i.e., higher power) or equal to this value.
|
|
*/
|
|
if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
|
|
goto out;
|
|
|
|
/*
|
|
* Element 0 of the _PRW object:
|
|
*/
|
|
switch (res->Package.Elements[0].Type) {
|
|
case ACPI_TYPE_INTEGER:
|
|
/*
|
|
* If the data type of this package element is numeric, then this
|
|
* _PRW package element is the bit index in the GPEx_EN, in the
|
|
* GPE blocks described in the FADT, of the enable bit that is
|
|
* enabled for the wake event.
|
|
*/
|
|
prw->gpe_handle = NULL;
|
|
prw->gpe_bit = res->Package.Elements[0].Integer.Value;
|
|
error = 0;
|
|
break;
|
|
case ACPI_TYPE_PACKAGE:
|
|
/*
|
|
* If the data type of this package element is a package, then this
|
|
* _PRW package element is itself a package containing two
|
|
* elements. The first is an object reference to the GPE Block
|
|
* device that contains the GPE that will be triggered by the wake
|
|
* event. The second element is numeric and it contains the bit
|
|
* index in the GPEx_EN, in the GPE Block referenced by the
|
|
* first element in the package, of the enable bit that is enabled for
|
|
* the wake event.
|
|
*
|
|
* For example, if this field is a package then it is of the form:
|
|
* Package() {\_SB.PCI0.ISA.GPE, 2}
|
|
*/
|
|
res2 = &res->Package.Elements[0];
|
|
if (!ACPI_PKG_VALID(res2, 2))
|
|
goto out;
|
|
prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
|
|
if (prw->gpe_handle == NULL)
|
|
goto out;
|
|
if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
|
|
goto out;
|
|
error = 0;
|
|
break;
|
|
default:
|
|
goto out;
|
|
}
|
|
|
|
/* Elements 2 to N of the _PRW object are power resources. */
|
|
power_count = res->Package.Count - 2;
|
|
if (power_count > ACPI_PRW_MAX_POWERRES) {
|
|
printf("ACPI device %s has too many power resources\n", acpi_name(h));
|
|
power_count = 0;
|
|
}
|
|
prw->power_res_count = power_count;
|
|
for (i = 0; i < power_count; i++)
|
|
prw->power_res[i] = res->Package.Elements[i];
|
|
|
|
out:
|
|
if (prw_buffer.Pointer != NULL)
|
|
AcpiOsFree(prw_buffer.Pointer);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* ACPI Event Handlers
|
|
*/
|
|
|
|
/* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
|
|
|
|
static void
|
|
acpi_system_eventhandler_sleep(void *arg, int state)
|
|
{
|
|
int ret;
|
|
|
|
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
|
|
|
|
/* Check if button action is disabled. */
|
|
if (state == ACPI_S_STATES_MAX + 1)
|
|
return;
|
|
|
|
/* Request that the system prepare to enter the given suspend state. */
|
|
ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
|
|
if (ret != 0)
|
|
printf("acpi: request to enter state S%d failed (err %d)\n",
|
|
state, ret);
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
static void
|
|
acpi_system_eventhandler_wakeup(void *arg, int state)
|
|
{
|
|
|
|
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
|
|
|
|
/* Currently, nothing to do for wakeup. */
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* ACPICA Event Handlers (FixedEvent, also called from button notify handler)
|
|
*/
|
|
UINT32
|
|
acpi_event_power_button_sleep(void *context)
|
|
{
|
|
struct acpi_softc *sc = (struct acpi_softc *)context;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
|
|
|
|
return_VALUE (ACPI_INTERRUPT_HANDLED);
|
|
}
|
|
|
|
UINT32
|
|
acpi_event_power_button_wake(void *context)
|
|
{
|
|
struct acpi_softc *sc = (struct acpi_softc *)context;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
|
|
|
|
return_VALUE (ACPI_INTERRUPT_HANDLED);
|
|
}
|
|
|
|
UINT32
|
|
acpi_event_sleep_button_sleep(void *context)
|
|
{
|
|
struct acpi_softc *sc = (struct acpi_softc *)context;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
|
|
|
|
return_VALUE (ACPI_INTERRUPT_HANDLED);
|
|
}
|
|
|
|
UINT32
|
|
acpi_event_sleep_button_wake(void *context)
|
|
{
|
|
struct acpi_softc *sc = (struct acpi_softc *)context;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
|
|
|
|
return_VALUE (ACPI_INTERRUPT_HANDLED);
|
|
}
|
|
|
|
/*
|
|
* XXX This static buffer is suboptimal. There is no locking so only
|
|
* use this for single-threaded callers.
|
|
*/
|
|
char *
|
|
acpi_name(ACPI_HANDLE handle)
|
|
{
|
|
ACPI_BUFFER buf;
|
|
static char data[256];
|
|
|
|
buf.Length = sizeof(data);
|
|
buf.Pointer = data;
|
|
|
|
if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
|
|
return (data);
|
|
return ("(unknown)");
|
|
}
|
|
|
|
/*
|
|
* Debugging/bug-avoidance. Avoid trying to fetch info on various
|
|
* parts of the namespace.
|
|
*/
|
|
int
|
|
acpi_avoid(ACPI_HANDLE handle)
|
|
{
|
|
char *cp, *env, *np;
|
|
int len;
|
|
|
|
np = acpi_name(handle);
|
|
if (*np == '\\')
|
|
np++;
|
|
if ((env = getenv("debug.acpi.avoid")) == NULL)
|
|
return (0);
|
|
|
|
/* Scan the avoid list checking for a match */
|
|
cp = env;
|
|
for (;;) {
|
|
while (*cp != 0 && isspace(*cp))
|
|
cp++;
|
|
if (*cp == 0)
|
|
break;
|
|
len = 0;
|
|
while (cp[len] != 0 && !isspace(cp[len]))
|
|
len++;
|
|
if (!strncmp(cp, np, len)) {
|
|
freeenv(env);
|
|
return(1);
|
|
}
|
|
cp += len;
|
|
}
|
|
freeenv(env);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Debugging/bug-avoidance. Disable ACPI subsystem components.
|
|
*/
|
|
int
|
|
acpi_disabled(char *subsys)
|
|
{
|
|
char *cp, *env;
|
|
int len;
|
|
|
|
if ((env = getenv("debug.acpi.disabled")) == NULL)
|
|
return (0);
|
|
if (strcmp(env, "all") == 0) {
|
|
freeenv(env);
|
|
return (1);
|
|
}
|
|
|
|
/* Scan the disable list, checking for a match. */
|
|
cp = env;
|
|
for (;;) {
|
|
while (*cp != '\0' && isspace(*cp))
|
|
cp++;
|
|
if (*cp == '\0')
|
|
break;
|
|
len = 0;
|
|
while (cp[len] != '\0' && !isspace(cp[len]))
|
|
len++;
|
|
if (strncmp(cp, subsys, len) == 0) {
|
|
freeenv(env);
|
|
return (1);
|
|
}
|
|
cp += len;
|
|
}
|
|
freeenv(env);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Control interface.
|
|
*
|
|
* We multiplex ioctls for all participating ACPI devices here. Individual
|
|
* drivers wanting to be accessible via /dev/acpi should use the
|
|
* register/deregister interface to make their handlers visible.
|
|
*/
|
|
struct acpi_ioctl_hook
|
|
{
|
|
TAILQ_ENTRY(acpi_ioctl_hook) link;
|
|
u_long cmd;
|
|
acpi_ioctl_fn fn;
|
|
void *arg;
|
|
};
|
|
|
|
static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
|
|
static int acpi_ioctl_hooks_initted;
|
|
|
|
int
|
|
acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
|
|
{
|
|
struct acpi_ioctl_hook *hp;
|
|
|
|
if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
|
|
return (ENOMEM);
|
|
hp->cmd = cmd;
|
|
hp->fn = fn;
|
|
hp->arg = arg;
|
|
|
|
ACPI_LOCK(acpi);
|
|
if (acpi_ioctl_hooks_initted == 0) {
|
|
TAILQ_INIT(&acpi_ioctl_hooks);
|
|
acpi_ioctl_hooks_initted = 1;
|
|
}
|
|
TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
|
|
ACPI_UNLOCK(acpi);
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
|
|
{
|
|
struct acpi_ioctl_hook *hp;
|
|
|
|
ACPI_LOCK(acpi);
|
|
TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
|
|
if (hp->cmd == cmd && hp->fn == fn)
|
|
break;
|
|
|
|
if (hp != NULL) {
|
|
TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
|
|
free(hp, M_ACPIDEV);
|
|
}
|
|
ACPI_UNLOCK(acpi);
|
|
}
|
|
|
|
static int
|
|
acpiopen(struct cdev *dev, int flag, int fmt, d_thread_t *td)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpiclose(struct cdev *dev, int flag, int fmt, d_thread_t *td)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
|
|
{
|
|
struct acpi_softc *sc;
|
|
struct acpi_ioctl_hook *hp;
|
|
int error, state;
|
|
|
|
error = 0;
|
|
hp = NULL;
|
|
sc = dev->si_drv1;
|
|
|
|
/*
|
|
* Scan the list of registered ioctls, looking for handlers.
|
|
*/
|
|
ACPI_LOCK(acpi);
|
|
if (acpi_ioctl_hooks_initted)
|
|
TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
|
|
if (hp->cmd == cmd)
|
|
break;
|
|
}
|
|
ACPI_UNLOCK(acpi);
|
|
if (hp)
|
|
return (hp->fn(cmd, addr, hp->arg));
|
|
|
|
/*
|
|
* Core ioctls are not permitted for non-writable user.
|
|
* Currently, other ioctls just fetch information.
|
|
* Not changing system behavior.
|
|
*/
|
|
if ((flag & FWRITE) == 0)
|
|
return (EPERM);
|
|
|
|
/* Core system ioctls. */
|
|
switch (cmd) {
|
|
case ACPIIO_REQSLPSTATE:
|
|
state = *(int *)addr;
|
|
if (state != ACPI_STATE_S5)
|
|
error = acpi_ReqSleepState(sc, state);
|
|
else {
|
|
printf("power off via acpi ioctl not supported\n");
|
|
error = ENXIO;
|
|
}
|
|
break;
|
|
case ACPIIO_ACKSLPSTATE:
|
|
error = *(int *)addr;
|
|
error = acpi_AckSleepState(sc->acpi_clone, error);
|
|
break;
|
|
case ACPIIO_SETSLPSTATE: /* DEPRECATED */
|
|
error = EINVAL;
|
|
state = *(int *)addr;
|
|
if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
|
|
if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
|
|
error = 0;
|
|
break;
|
|
default:
|
|
error = ENXIO;
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
int error;
|
|
struct sbuf sb;
|
|
UINT8 state, TypeA, TypeB;
|
|
|
|
sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
|
|
for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
|
|
if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
|
|
sbuf_printf(&sb, "S%d ", state);
|
|
sbuf_trim(&sb);
|
|
sbuf_finish(&sb);
|
|
error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
|
|
sbuf_delete(&sb);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
char sleep_state[10];
|
|
int error;
|
|
u_int new_state, old_state;
|
|
|
|
old_state = *(u_int *)oidp->oid_arg1;
|
|
if (old_state > ACPI_S_STATES_MAX + 1)
|
|
strlcpy(sleep_state, "unknown", sizeof(sleep_state));
|
|
else
|
|
strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
|
|
error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
|
|
if (error == 0 && req->newptr != NULL) {
|
|
new_state = ACPI_STATE_S0;
|
|
for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
|
|
if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
|
|
break;
|
|
if (new_state <= ACPI_S_STATES_MAX + 1) {
|
|
if (new_state != old_state)
|
|
*(u_int *)oidp->oid_arg1 = new_state;
|
|
} else
|
|
error = EINVAL;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/* Inform devctl(4) when we receive a Notify. */
|
|
void
|
|
acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
|
|
{
|
|
char notify_buf[16];
|
|
ACPI_BUFFER handle_buf;
|
|
ACPI_STATUS status;
|
|
|
|
if (subsystem == NULL)
|
|
return;
|
|
|
|
handle_buf.Pointer = NULL;
|
|
handle_buf.Length = ACPI_ALLOCATE_BUFFER;
|
|
status = AcpiNsHandleToPathname(h, &handle_buf);
|
|
if (ACPI_FAILURE(status))
|
|
return;
|
|
snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
|
|
devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
|
|
AcpiOsFree(handle_buf.Pointer);
|
|
}
|
|
|
|
#ifdef ACPI_DEBUG
|
|
/*
|
|
* Support for parsing debug options from the kernel environment.
|
|
*
|
|
* Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
|
|
* by specifying the names of the bits in the debug.acpi.layer and
|
|
* debug.acpi.level environment variables. Bits may be unset by
|
|
* prefixing the bit name with !.
|
|
*/
|
|
struct debugtag
|
|
{
|
|
char *name;
|
|
UINT32 value;
|
|
};
|
|
|
|
static struct debugtag dbg_layer[] = {
|
|
{"ACPI_UTILITIES", ACPI_UTILITIES},
|
|
{"ACPI_HARDWARE", ACPI_HARDWARE},
|
|
{"ACPI_EVENTS", ACPI_EVENTS},
|
|
{"ACPI_TABLES", ACPI_TABLES},
|
|
{"ACPI_NAMESPACE", ACPI_NAMESPACE},
|
|
{"ACPI_PARSER", ACPI_PARSER},
|
|
{"ACPI_DISPATCHER", ACPI_DISPATCHER},
|
|
{"ACPI_EXECUTER", ACPI_EXECUTER},
|
|
{"ACPI_RESOURCES", ACPI_RESOURCES},
|
|
{"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
|
|
{"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
|
|
{"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
|
|
{"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
|
|
|
|
{"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
|
|
{"ACPI_BATTERY", ACPI_BATTERY},
|
|
{"ACPI_BUS", ACPI_BUS},
|
|
{"ACPI_BUTTON", ACPI_BUTTON},
|
|
{"ACPI_EC", ACPI_EC},
|
|
{"ACPI_FAN", ACPI_FAN},
|
|
{"ACPI_POWERRES", ACPI_POWERRES},
|
|
{"ACPI_PROCESSOR", ACPI_PROCESSOR},
|
|
{"ACPI_THERMAL", ACPI_THERMAL},
|
|
{"ACPI_TIMER", ACPI_TIMER},
|
|
{"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
|
|
{NULL, 0}
|
|
};
|
|
|
|
static struct debugtag dbg_level[] = {
|
|
{"ACPI_LV_ERROR", ACPI_LV_ERROR},
|
|
{"ACPI_LV_WARN", ACPI_LV_WARN},
|
|
{"ACPI_LV_INIT", ACPI_LV_INIT},
|
|
{"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
|
|
{"ACPI_LV_INFO", ACPI_LV_INFO},
|
|
{"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
|
|
|
|
/* Trace verbosity level 1 [Standard Trace Level] */
|
|
{"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
|
|
{"ACPI_LV_PARSE", ACPI_LV_PARSE},
|
|
{"ACPI_LV_LOAD", ACPI_LV_LOAD},
|
|
{"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
|
|
{"ACPI_LV_EXEC", ACPI_LV_EXEC},
|
|
{"ACPI_LV_NAMES", ACPI_LV_NAMES},
|
|
{"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
|
|
{"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
|
|
{"ACPI_LV_TABLES", ACPI_LV_TABLES},
|
|
{"ACPI_LV_VALUES", ACPI_LV_VALUES},
|
|
{"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
|
|
{"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
|
|
{"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
|
|
{"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
|
|
{"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
|
|
|
|
/* Trace verbosity level 2 [Function tracing and memory allocation] */
|
|
{"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
|
|
{"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
|
|
{"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
|
|
{"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
|
|
{"ACPI_LV_ALL", ACPI_LV_ALL},
|
|
|
|
/* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
|
|
{"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
|
|
{"ACPI_LV_THREADS", ACPI_LV_THREADS},
|
|
{"ACPI_LV_IO", ACPI_LV_IO},
|
|
{"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
|
|
{"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
|
|
|
|
/* Exceptionally verbose output -- also used in the global "DebugLevel" */
|
|
{"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
|
|
{"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
|
|
{"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
|
|
{"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
|
|
{"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
|
|
{NULL, 0}
|
|
};
|
|
|
|
static void
|
|
acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
|
|
{
|
|
char *ep;
|
|
int i, l;
|
|
int set;
|
|
|
|
while (*cp) {
|
|
if (isspace(*cp)) {
|
|
cp++;
|
|
continue;
|
|
}
|
|
ep = cp;
|
|
while (*ep && !isspace(*ep))
|
|
ep++;
|
|
if (*cp == '!') {
|
|
set = 0;
|
|
cp++;
|
|
if (cp == ep)
|
|
continue;
|
|
} else {
|
|
set = 1;
|
|
}
|
|
l = ep - cp;
|
|
for (i = 0; tag[i].name != NULL; i++) {
|
|
if (!strncmp(cp, tag[i].name, l)) {
|
|
if (set)
|
|
*flag |= tag[i].value;
|
|
else
|
|
*flag &= ~tag[i].value;
|
|
}
|
|
}
|
|
cp = ep;
|
|
}
|
|
}
|
|
|
|
static void
|
|
acpi_set_debugging(void *junk)
|
|
{
|
|
char *layer, *level;
|
|
|
|
if (cold) {
|
|
AcpiDbgLayer = 0;
|
|
AcpiDbgLevel = 0;
|
|
}
|
|
|
|
layer = getenv("debug.acpi.layer");
|
|
level = getenv("debug.acpi.level");
|
|
if (layer == NULL && level == NULL)
|
|
return;
|
|
|
|
printf("ACPI set debug");
|
|
if (layer != NULL) {
|
|
if (strcmp("NONE", layer) != 0)
|
|
printf(" layer '%s'", layer);
|
|
acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
|
|
freeenv(layer);
|
|
}
|
|
if (level != NULL) {
|
|
if (strcmp("NONE", level) != 0)
|
|
printf(" level '%s'", level);
|
|
acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
|
|
freeenv(level);
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
|
|
NULL);
|
|
|
|
static int
|
|
acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
int error, *dbg;
|
|
struct debugtag *tag;
|
|
struct sbuf sb;
|
|
|
|
if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
|
|
return (ENOMEM);
|
|
if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
|
|
tag = &dbg_layer[0];
|
|
dbg = &AcpiDbgLayer;
|
|
} else {
|
|
tag = &dbg_level[0];
|
|
dbg = &AcpiDbgLevel;
|
|
}
|
|
|
|
/* Get old values if this is a get request. */
|
|
ACPI_SERIAL_BEGIN(acpi);
|
|
if (*dbg == 0) {
|
|
sbuf_cpy(&sb, "NONE");
|
|
} else if (req->newptr == NULL) {
|
|
for (; tag->name != NULL; tag++) {
|
|
if ((*dbg & tag->value) == tag->value)
|
|
sbuf_printf(&sb, "%s ", tag->name);
|
|
}
|
|
}
|
|
sbuf_trim(&sb);
|
|
sbuf_finish(&sb);
|
|
|
|
/* Copy out the old values to the user. */
|
|
error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
|
|
sbuf_delete(&sb);
|
|
|
|
/* If the user is setting a string, parse it. */
|
|
if (error == 0 && req->newptr != NULL) {
|
|
*dbg = 0;
|
|
setenv((char *)oidp->oid_arg1, (char *)req->newptr);
|
|
acpi_set_debugging(NULL);
|
|
}
|
|
ACPI_SERIAL_END(acpi);
|
|
|
|
return (error);
|
|
}
|
|
|
|
SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
|
|
"debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
|
|
SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
|
|
"debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
|
|
#endif /* ACPI_DEBUG */
|
|
|
|
static int
|
|
acpi_pm_func(u_long cmd, void *arg, ...)
|
|
{
|
|
int state, acpi_state;
|
|
int error;
|
|
struct acpi_softc *sc;
|
|
va_list ap;
|
|
|
|
error = 0;
|
|
switch (cmd) {
|
|
case POWER_CMD_SUSPEND:
|
|
sc = (struct acpi_softc *)arg;
|
|
if (sc == NULL) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
va_start(ap, arg);
|
|
state = va_arg(ap, int);
|
|
va_end(ap);
|
|
|
|
switch (state) {
|
|
case POWER_SLEEP_STATE_STANDBY:
|
|
acpi_state = sc->acpi_standby_sx;
|
|
break;
|
|
case POWER_SLEEP_STATE_SUSPEND:
|
|
acpi_state = sc->acpi_suspend_sx;
|
|
break;
|
|
case POWER_SLEEP_STATE_HIBERNATE:
|
|
acpi_state = ACPI_STATE_S4;
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
|
|
error = ENXIO;
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
acpi_pm_register(void *arg)
|
|
{
|
|
if (!cold || resource_disabled("acpi", 0))
|
|
return;
|
|
|
|
power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
|
|
}
|
|
|
|
SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
|