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freebsd-src/sys/dev/acpica/acpi.c
John Baldwin 98056127dd acpi/pci/vmd: Fix a nit with nested resource mapping requests 
Some bus drivers use rmans to suballocate resources to child devices.
When the driver for a child device requests a mapping for a
suballocated resource, the bus driver translates this into a mapping
request for a suitable subrange of the original resource the bus
driver allocated from its parent.  This nested mapping request should
look like any other resource mapping request being made by the bus
device (i.e. as if the bus device had called bus_map_resource() or
bus_alloc_resource() with RF_ACTIVE).

I had slightly flubbed this last bit though since the direct use of
bus_generic_map/unmap_resource passed up the original child device
(second argument to the underlying kobj interface).  While this is
currently harmless, it is not strictly correct as the resource being
mapped is owned by the bus device, not the child and can break for
other bus drivers in the future.

Instead, use bus_map/unmap_resource for the nested request where the
requesting device is now the bus device that owns the parent resource.

Reviewed by:	imp
Fixes:		0e1246e334 acpi: Cleanup handling of suballocated resources
Fixes:		b377ff8110 pcib: Refine handling of resources allocated from bridge windows
Fixes:		d79b6b8ec2 pci_host_generic: Don't rewrite resource start address for translation
Fixes:		d714e73f78 vmd: Use bus_generic_rman_* for PCI bus and memory resources
Differential Revision:	https://reviews.freebsd.org/D45433
2024-06-04 16:51:14 -07:00

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/*-
* Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
* Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
* Copyright (c) 2000, 2001 Michael Smith
* Copyright (c) 2000 BSDi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/ioccom.h>
#include <sys/reboot.h>
#include <sys/sysctl.h>
#include <sys/ctype.h>
#include <sys/linker.h>
#include <sys/mount.h>
#include <sys/power.h>
#include <sys/sbuf.h>
#include <sys/sched.h>
#include <sys/smp.h>
#include <sys/timetc.h>
#include <sys/uuid.h>
#if defined(__i386__) || defined(__amd64__)
#include <machine/clock.h>
#include <machine/pci_cfgreg.h>
#endif
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <isa/pnpvar.h>
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <dev/acpica/acpivar.h>
#include <dev/acpica/acpiio.h>
#include <dev/pci/pcivar.h>
#include <vm/vm_param.h>
static MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
/* Hooks for the ACPI CA debugging infrastructure */
#define _COMPONENT ACPI_BUS
ACPI_MODULE_NAME("ACPI")
static d_open_t acpiopen;
static d_close_t acpiclose;
static d_ioctl_t acpiioctl;
static struct cdevsw acpi_cdevsw = {
.d_version = D_VERSION,
.d_open = acpiopen,
.d_close = acpiclose,
.d_ioctl = acpiioctl,
.d_name = "acpi",
};
struct acpi_interface {
ACPI_STRING *data;
int num;
};
static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
/* Global mutex for locking access to the ACPI subsystem. */
struct mtx acpi_mutex;
struct callout acpi_sleep_timer;
/* Bitmap of device quirks. */
int acpi_quirks;
/* Supported sleep states. */
static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT];
static void acpi_lookup(void *arg, const char *name, device_t *dev);
static int acpi_modevent(struct module *mod, int event, void *junk);
static device_probe_t acpi_probe;
static device_attach_t acpi_attach;
static device_suspend_t acpi_suspend;
static device_resume_t acpi_resume;
static device_shutdown_t acpi_shutdown;
static bus_add_child_t acpi_add_child;
static bus_print_child_t acpi_print_child;
static bus_probe_nomatch_t acpi_probe_nomatch;
static bus_driver_added_t acpi_driver_added;
static bus_child_deleted_t acpi_child_deleted;
static bus_read_ivar_t acpi_read_ivar;
static bus_write_ivar_t acpi_write_ivar;
static bus_get_resource_list_t acpi_get_rlist;
static bus_get_rman_t acpi_get_rman;
static bus_set_resource_t acpi_set_resource;
static bus_alloc_resource_t acpi_alloc_resource;
static bus_adjust_resource_t acpi_adjust_resource;
static bus_release_resource_t acpi_release_resource;
static bus_delete_resource_t acpi_delete_resource;
static bus_activate_resource_t acpi_activate_resource;
static bus_deactivate_resource_t acpi_deactivate_resource;
static bus_map_resource_t acpi_map_resource;
static bus_unmap_resource_t acpi_unmap_resource;
static bus_child_pnpinfo_t acpi_child_pnpinfo_method;
static bus_child_location_t acpi_child_location_method;
static bus_hint_device_unit_t acpi_hint_device_unit;
static bus_get_property_t acpi_bus_get_prop;
static bus_get_device_path_t acpi_get_device_path;
static acpi_id_probe_t acpi_device_id_probe;
static acpi_evaluate_object_t acpi_device_eval_obj;
static acpi_get_property_t acpi_device_get_prop;
static acpi_scan_children_t acpi_device_scan_children;
static isa_pnp_probe_t acpi_isa_pnp_probe;
static void acpi_reserve_resources(device_t dev);
static int acpi_sysres_alloc(device_t dev);
static uint32_t acpi_isa_get_logicalid(device_t dev);
static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
void *context, void **retval);
static ACPI_STATUS acpi_find_dsd(struct acpi_device *ad);
static void acpi_platform_osc(device_t dev);
static void acpi_probe_children(device_t bus);
static void acpi_probe_order(ACPI_HANDLE handle, int *order);
static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
void *context, void **status);
static void acpi_sleep_enable(void *arg);
static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
static void acpi_shutdown_final(void *arg, int howto);
static void acpi_enable_fixed_events(struct acpi_softc *sc);
static void acpi_resync_clock(struct acpi_softc *sc);
static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
static int acpi_wake_prep_walk(int sstate);
static int acpi_wake_sysctl_walk(device_t dev);
static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
static void acpi_system_eventhandler_sleep(void *arg, int state);
static void acpi_system_eventhandler_wakeup(void *arg, int state);
static int acpi_sname2sstate(const char *sname);
static const char *acpi_sstate2sname(int sstate);
static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
static int acpi_pm_func(u_long cmd, void *arg, ...);
static void acpi_enable_pcie(void);
static void acpi_reset_interfaces(device_t dev);
static device_method_t acpi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, acpi_probe),
DEVMETHOD(device_attach, acpi_attach),
DEVMETHOD(device_shutdown, acpi_shutdown),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_suspend, acpi_suspend),
DEVMETHOD(device_resume, acpi_resume),
/* Bus interface */
DEVMETHOD(bus_add_child, acpi_add_child),
DEVMETHOD(bus_print_child, acpi_print_child),
DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
DEVMETHOD(bus_driver_added, acpi_driver_added),
DEVMETHOD(bus_child_deleted, acpi_child_deleted),
DEVMETHOD(bus_read_ivar, acpi_read_ivar),
DEVMETHOD(bus_write_ivar, acpi_write_ivar),
DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
DEVMETHOD(bus_get_rman, acpi_get_rman),
DEVMETHOD(bus_set_resource, acpi_set_resource),
DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
DEVMETHOD(bus_adjust_resource, acpi_adjust_resource),
DEVMETHOD(bus_release_resource, acpi_release_resource),
DEVMETHOD(bus_delete_resource, acpi_delete_resource),
DEVMETHOD(bus_activate_resource, acpi_activate_resource),
DEVMETHOD(bus_deactivate_resource, acpi_deactivate_resource),
DEVMETHOD(bus_map_resource, acpi_map_resource),
DEVMETHOD(bus_unmap_resource, acpi_unmap_resource),
DEVMETHOD(bus_child_pnpinfo, acpi_child_pnpinfo_method),
DEVMETHOD(bus_child_location, acpi_child_location_method),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_hint_device_unit, acpi_hint_device_unit),
DEVMETHOD(bus_get_cpus, acpi_get_cpus),
DEVMETHOD(bus_get_domain, acpi_get_domain),
DEVMETHOD(bus_get_property, acpi_bus_get_prop),
DEVMETHOD(bus_get_device_path, acpi_get_device_path),
/* ACPI bus */
DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
DEVMETHOD(acpi_get_property, acpi_device_get_prop),
DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
/* ISA emulation */
DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
DEVMETHOD_END
};
static driver_t acpi_driver = {
"acpi",
acpi_methods,
sizeof(struct acpi_softc),
};
EARLY_DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_modevent, 0,
BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
MODULE_VERSION(acpi, 1);
ACPI_SERIAL_DECL(acpi, "ACPI root bus");
/* Local pools for managing system resources for ACPI child devices. */
static struct rman acpi_rman_io, acpi_rman_mem;
#define ACPI_MINIMUM_AWAKETIME 5
/* Holds the description of the acpi0 device. */
static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL,
"ACPI debugging");
static char acpi_ca_version[12];
SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
acpi_ca_version, 0, "Version of Intel ACPI-CA");
/*
* Allow overriding _OSI methods.
*/
static char acpi_install_interface[256];
TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
sizeof(acpi_install_interface));
static char acpi_remove_interface[256];
TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
sizeof(acpi_remove_interface));
/* Allow users to dump Debug objects without ACPI debugger. */
static int acpi_debug_objects;
TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
CTLFLAG_RW | CTLTYPE_INT | CTLFLAG_MPSAFE, NULL, 0,
acpi_debug_objects_sysctl, "I",
"Enable Debug objects");
/* Allow the interpreter to ignore common mistakes in BIOS. */
static int acpi_interpreter_slack = 1;
TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
&acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
/* Ignore register widths set by FADT and use default widths instead. */
static int acpi_ignore_reg_width = 1;
TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width);
SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN,
&acpi_ignore_reg_width, 1, "Ignore register widths set by FADT");
/* Allow users to override quirks. */
TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
int acpi_susp_bounce;
SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
&acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
/*
* ACPI standard UUID for Device Specific Data Package
* "Device Properties UUID for _DSD" Rev. 2.0
*/
static const struct uuid acpi_dsd_uuid = {
0xdaffd814, 0x6eba, 0x4d8c, 0x8a, 0x91,
{ 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01 }
};
/*
* ACPI can only be loaded as a module by the loader; activating it after
* system bootstrap time is not useful, and can be fatal to the system.
* It also cannot be unloaded, since the entire system bus hierarchy hangs
* off it.
*/
static int
acpi_modevent(struct module *mod, int event, void *junk)
{
switch (event) {
case MOD_LOAD:
if (!cold) {
printf("The ACPI driver cannot be loaded after boot.\n");
return (EPERM);
}
break;
case MOD_UNLOAD:
if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
return (EBUSY);
break;
default:
break;
}
return (0);
}
/*
* Perform early initialization.
*/
ACPI_STATUS
acpi_Startup(void)
{
static int started = 0;
ACPI_STATUS status;
int val;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
/* Only run the startup code once. The MADT driver also calls this. */
if (started)
return_VALUE (AE_OK);
started = 1;
/*
* Initialize the ACPICA subsystem.
*/
if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) {
printf("ACPI: Could not initialize Subsystem: %s\n",
AcpiFormatException(status));
return_VALUE (status);
}
/*
* Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
* if more tables exist.
*/
if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
printf("ACPI: Table initialisation failed: %s\n",
AcpiFormatException(status));
return_VALUE (status);
}
/* Set up any quirks we have for this system. */
if (acpi_quirks == ACPI_Q_OK)
acpi_table_quirks(&acpi_quirks);
/* If the user manually set the disabled hint to 0, force-enable ACPI. */
if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
acpi_quirks &= ~ACPI_Q_BROKEN;
if (acpi_quirks & ACPI_Q_BROKEN) {
printf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
status = AE_SUPPORT;
}
return_VALUE (status);
}
/*
* Detect ACPI and perform early initialisation.
*/
int
acpi_identify(void)
{
ACPI_TABLE_RSDP *rsdp;
ACPI_TABLE_HEADER *rsdt;
ACPI_PHYSICAL_ADDRESS paddr;
struct sbuf sb;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
if (!cold)
return (ENXIO);
/* Check that we haven't been disabled with a hint. */
if (resource_disabled("acpi", 0))
return (ENXIO);
/* Check for other PM systems. */
if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
power_pm_get_type() != POWER_PM_TYPE_ACPI) {
printf("ACPI identify failed, other PM system enabled.\n");
return (ENXIO);
}
/* Initialize root tables. */
if (ACPI_FAILURE(acpi_Startup())) {
printf("ACPI: Try disabling either ACPI or apic support.\n");
return (ENXIO);
}
if ((paddr = AcpiOsGetRootPointer()) == 0 ||
(rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
return (ENXIO);
if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
else
paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
return (ENXIO);
sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
sbuf_trim(&sb);
sbuf_putc(&sb, ' ');
sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
sbuf_trim(&sb);
sbuf_finish(&sb);
sbuf_delete(&sb);
AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
return (0);
}
/*
* Fetch some descriptive data from ACPI to put in our attach message.
*/
static int
acpi_probe(device_t dev)
{
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
device_set_desc(dev, acpi_desc);
return_VALUE (BUS_PROBE_NOWILDCARD);
}
static int
acpi_attach(device_t dev)
{
struct acpi_softc *sc;
ACPI_STATUS status;
int error, state;
UINT32 flags;
UINT8 TypeA, TypeB;
char *env;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
sc->acpi_dev = dev;
callout_init(&sc->susp_force_to, 1);
error = ENXIO;
/* Initialize resource manager. */
acpi_rman_io.rm_type = RMAN_ARRAY;
acpi_rman_io.rm_start = 0;
acpi_rman_io.rm_end = 0xffff;
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_descr = "ACPI I/O memory addresses";
if (rman_init(&acpi_rman_mem) != 0)
panic("acpi rman_init memory failed");
resource_list_init(&sc->sysres_rl);
/* 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_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE;
#ifndef ACPI_DEBUG
/*
* Disable all debugging layers and levels.
*/
AcpiDbgLayer = 0;
AcpiDbgLevel = 0;
#endif
/* Override OS interfaces if the user requested. */
acpi_reset_interfaces(dev);
/* Load ACPI name space. */
status = AcpiLoadTables();
if (ACPI_FAILURE(status)) {
device_printf(dev, "Could not load Namespace: %s\n",
AcpiFormatException(status));
goto out;
}
/* Handle MCFG table if present. */
acpi_enable_pcie();
/*
* 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 | CTLFLAG_MPSAFE, 0, "");
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
OID_AUTO, "supported_sleep_state",
CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
0, 0, acpi_supported_sleep_state_sysctl, "A",
"List supported ACPI sleep states.");
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
OID_AUTO, "power_button_state",
CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE,
&sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A",
"Power button ACPI sleep state.");
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
OID_AUTO, "sleep_button_state",
CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE,
&sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A",
"Sleep button ACPI sleep state.");
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
OID_AUTO, "lid_switch_state",
CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE,
&sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A",
"Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid.");
SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
OID_AUTO, "standby_state",
CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE,
&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 | CTLFLAG_MPSAFE,
&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 in seconds");
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 = kern_getenv("hw.acpi.verbose")) != NULL) {
if (strcmp(env, "0") != 0)
sc->acpi_verbose = 1;
freeenv(env);
}
/* Only enable reboot by default if the FADT says it is available. */
if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
sc->acpi_handle_reboot = 1;
#if !ACPI_REDUCED_HARDWARE
/* Only enable S4BIOS by default if the FACS says it is available. */
if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
sc->acpi_s4bios = 1;
#endif
/* Probe all supported sleep states. */
acpi_sleep_states[ACPI_STATE_S0] = TRUE;
for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
__DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
acpi_sleep_states[state] = TRUE;
/*
* Dispatch the default sleep state to devices. The lid switch is set
* to UNKNOWN by default to avoid surprising users.
*/
sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
/* Pick the first valid sleep state for the sleep button default. */
sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
if (acpi_sleep_states[state]) {
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 + 150);
/*
* 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 = TRUE;
sc->acpi_sstate = ACPI_STATE_S0;
sc->acpi_sleep_disabled = TRUE;
/* Create the control device */
sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0664,
"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);
acpi_platform_osc(dev);
if (!acpi_disabled("bus")) {
EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000);
acpi_probe_children(dev);
}
/* Update all GPEs and enable runtime GPEs. */
status = AcpiUpdateAllGpes();
if (ACPI_FAILURE(status))
device_printf(dev, "Could not update all GPEs: %s\n",
AcpiFormatException(status));
/* Allow sleep request after a while. */
callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
acpi_sleep_enable, sc);
error = 0;
out:
return_VALUE (error);
}
static void
acpi_set_power_children(device_t dev, int state)
{
device_t child;
device_t *devlist;
int dstate, i, numdevs;
if (device_get_children(dev, &devlist, &numdevs) != 0)
return;
/*
* Retrieve and set D-state for the sleep state if _SxD is present.
* Skip children who aren't attached since they are handled separately.
*/
for (i = 0; i < numdevs; i++) {
child = devlist[i];
dstate = state;
if (device_is_attached(child) &&
acpi_device_pwr_for_sleep(dev, child, &dstate) == 0)
acpi_set_powerstate(child, dstate);
}
free(devlist, M_TEMP);
}
static int
acpi_suspend(device_t dev)
{
int error;
bus_topo_assert();
error = bus_generic_suspend(dev);
if (error == 0)
acpi_set_power_children(dev, ACPI_STATE_D3);
return (error);
}
static int
acpi_resume(device_t dev)
{
bus_topo_assert();
acpi_set_power_children(dev, ACPI_STATE_D0);
return (bus_generic_resume(dev));
}
static int
acpi_shutdown(device_t dev)
{
bus_topo_assert();
/* 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, u_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, "%#jx");
retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx");
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%jd");
if (device_get_flags(child))
retval += printf(" flags %#x", device_get_flags(child));
retval += bus_print_child_domain(bus, 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)
{
#ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
acpi_set_powerstate(child, ACPI_STATE_D3);
#endif
}
/*
* 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);
if (device_get_children(dev, &devlist, &numdevs))
return;
for (i = 0; i < numdevs; i++) {
child = devlist[i];
if (device_get_state(child) == DS_NOTPRESENT) {
#ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
acpi_set_powerstate(child, ACPI_STATE_D0);
if (device_probe_and_attach(child) != 0)
acpi_set_powerstate(child, ACPI_STATE_D3);
#else
device_probe_and_attach(child);
#endif
}
}
free(devlist, M_TEMP);
}
/* Location hint for devctl(8) */
static int
acpi_child_location_method(device_t cbdev, device_t child, struct sbuf *sb)
{
struct acpi_device *dinfo = device_get_ivars(child);
int pxm;
if (dinfo->ad_handle) {
sbuf_printf(sb, "handle=%s", acpi_name(dinfo->ad_handle));
if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
sbuf_printf(sb, " _PXM=%d", pxm);
}
}
return (0);
}
/* PnP information for devctl(8) */
int
acpi_pnpinfo(ACPI_HANDLE handle, struct sbuf *sb)
{
ACPI_DEVICE_INFO *adinfo;
if (ACPI_FAILURE(AcpiGetObjectInfo(handle, &adinfo))) {
sbuf_printf(sb, "unknown");
return (0);
}
sbuf_printf(sb, "_HID=%s _UID=%lu _CID=%s",
(adinfo->Valid & ACPI_VALID_HID) ?
adinfo->HardwareId.String : "none",
(adinfo->Valid & ACPI_VALID_UID) ?
strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL,
((adinfo->Valid & ACPI_VALID_CID) &&
adinfo->CompatibleIdList.Count > 0) ?
adinfo->CompatibleIdList.Ids[0].String : "none");
AcpiOsFree(adinfo);
return (0);
}
static int
acpi_child_pnpinfo_method(device_t cbdev, device_t child, struct sbuf *sb)
{
struct acpi_device *dinfo = device_get_ivars(child);
return (acpi_pnpinfo(dinfo->ad_handle, sb));
}
/*
* Note: the check for ACPI locator may be redundant. However, this routine is
* suitable for both busses whose only locator is ACPI and as a building block
* for busses that have multiple locators to cope with.
*/
int
acpi_get_acpi_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb)
{
if (strcmp(locator, BUS_LOCATOR_ACPI) == 0) {
ACPI_HANDLE *handle = acpi_get_handle(child);
if (handle != NULL)
sbuf_printf(sb, "%s", acpi_name(handle));
return (0);
}
return (bus_generic_get_device_path(bus, child, locator, sb));
}
static int
acpi_get_device_path(device_t bus, device_t child, const char *locator, struct sbuf *sb)
{
struct acpi_device *dinfo = device_get_ivars(child);
if (strcmp(locator, BUS_LOCATOR_ACPI) == 0)
return (acpi_get_acpi_device_path(bus, child, locator, sb));
if (strcmp(locator, BUS_LOCATOR_UEFI) == 0) {
ACPI_DEVICE_INFO *adinfo;
if (!ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo)) &&
dinfo->ad_handle != 0 && (adinfo->Valid & ACPI_VALID_HID)) {
const char *hid = adinfo->HardwareId.String;
u_long uid = (adinfo->Valid & ACPI_VALID_UID) ?
strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL;
u_long hidval;
/*
* In UEFI Stanard Version 2.6, Section 9.6.1.6 Text
* Device Node Reference, there's an insanely long table
* 98. This implements the relevant bits from that
* table. Newer versions appear to have not required
* anything new. The EDK2 firmware presents both PciRoot
* and PcieRoot as PciRoot. Follow the EDK2 standard.
*/
if (strncmp("PNP", hid, 3) != 0)
goto nomatch;
hidval = strtoul(hid + 3, NULL, 16);
switch (hidval) {
case 0x0301:
sbuf_printf(sb, "Keyboard(0x%lx)", uid);
break;
case 0x0401:
sbuf_printf(sb, "ParallelPort(0x%lx)", uid);
break;
case 0x0501:
sbuf_printf(sb, "Serial(0x%lx)", uid);
break;
case 0x0604:
sbuf_printf(sb, "Floppy(0x%lx)", uid);
break;
case 0x0a03:
case 0x0a08:
sbuf_printf(sb, "PciRoot(0x%lx)", uid);
break;
default: /* Everything else gets a generic encode */
nomatch:
sbuf_printf(sb, "Acpi(%s,0x%lx)", hid, uid);
break;
}
}
/* Not handled: AcpiAdr... unsure how to know it's one */
}
/* For the rest, punt to the default handler */
return (bus_generic_get_device_path(bus, child, locator, sb));
}
/*
* Handle device deletion.
*/
static void
acpi_child_deleted(device_t dev, device_t child)
{
struct acpi_device *dinfo = device_get_ivars(child);
if (acpi_get_device(dinfo->ad_handle) == child)
AcpiDetachData(dinfo->ad_handle, acpi_fake_objhandler);
}
/*
* 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) {
device_printf(child, "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_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;
case PCI_IVAR_CLASS:
*(uint8_t*)result = (ad->ad_cls_class >> 16) & 0xff;
break;
case PCI_IVAR_SUBCLASS:
*(uint8_t*)result = (ad->ad_cls_class >> 8) & 0xff;
break;
case PCI_IVAR_PROGIF:
*(uint8_t*)result = (ad->ad_cls_class >> 0) & 0xff;
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) {
device_printf(child, "device has no ivars\n");
return (ENOENT);
}
switch(index) {
case ACPI_IVAR_HANDLE:
ad->ad_handle = (ACPI_HANDLE)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);
}
static int
acpi_match_resource_hint(device_t dev, int type, long value)
{
struct acpi_device *ad = device_get_ivars(dev);
struct resource_list *rl = &ad->ad_rl;
struct resource_list_entry *rle;
STAILQ_FOREACH(rle, rl, link) {
if (rle->type != type)
continue;
if (rle->start <= value && rle->end >= value)
return (1);
}
return (0);
}
/*
* Does this device match because the resources match?
*/
static bool
acpi_hint_device_matches_resources(device_t child, const char *name,
int unit)
{
long value;
bool matches;
/*
* Check for matching resources. We must have at least one match.
* Since I/O and memory resources cannot be shared, if we get a
* match on either of those, ignore any mismatches in IRQs or DRQs.
*
* XXX: We may want to revisit this to be more lenient and wire
* as long as it gets one match.
*/
matches = false;
if (resource_long_value(name, unit, "port", &value) == 0) {
/*
* Floppy drive controllers are notorious for having a
* wide variety of resources not all of which include the
* first port that is specified by the hint (typically
* 0x3f0) (see the comment above fdc_isa_alloc_resources()
* in fdc_isa.c). However, they do all seem to include
* port + 2 (e.g. 0x3f2) so for a floppy device, look for
* 'value + 2' in the port resources instead of the hint
* value.
*/
if (strcmp(name, "fdc") == 0)
value += 2;
if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
matches = true;
else
return false;
}
if (resource_long_value(name, unit, "maddr", &value) == 0) {
if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
matches = true;
else
return false;
}
/*
* If either the I/O address and/or the memory address matched, then
* assumed this devices matches and that any mismatch in other resources
* will be resolved by siltently ignoring those other resources. Otherwise
* all further resources must match.
*/
if (matches) {
return (true);
}
if (resource_long_value(name, unit, "irq", &value) == 0) {
if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
matches = true;
else
return false;
}
if (resource_long_value(name, unit, "drq", &value) == 0) {
if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
matches = true;
else
return false;
}
return matches;
}
/*
* Wire device unit numbers based on resource matches in hints.
*/
static void
acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
int *unitp)
{
device_location_cache_t *cache;
const char *s;
int line, unit;
bool matches;
/*
* Iterate over all the hints for the devices with the specified
* name to see if one's resources are a subset of this device.
*/
line = 0;
cache = dev_wired_cache_init();
while (resource_find_dev(&line, name, &unit, "at", NULL) == 0) {
/* Must have an "at" for acpi or isa. */
resource_string_value(name, unit, "at", &s);
matches = false;
if (strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0)
matches = acpi_hint_device_matches_resources(child, name, unit);
else
matches = dev_wired_cache_match(cache, child, s);
if (matches) {
/* We have a winner! */
*unitp = unit;
break;
}
}
dev_wired_cache_fini(cache);
}
/*
* Fetch the NUMA domain for a device by mapping the value returned by
* _PXM to a NUMA domain. If the device does not have a _PXM method,
* -2 is returned. If any other error occurs, -1 is returned.
*/
static int
acpi_parse_pxm(device_t dev)
{
#ifdef NUMA
#if defined(__i386__) || defined(__amd64__) || defined(__aarch64__)
ACPI_HANDLE handle;
ACPI_STATUS status;
int pxm;
handle = acpi_get_handle(dev);
if (handle == NULL)
return (-2);
status = acpi_GetInteger(handle, "_PXM", &pxm);
if (ACPI_SUCCESS(status))
return (acpi_map_pxm_to_vm_domainid(pxm));
if (status == AE_NOT_FOUND)
return (-2);
#endif
#endif
return (-1);
}
int
acpi_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize,
cpuset_t *cpuset)
{
int d, error;
d = acpi_parse_pxm(child);
if (d < 0)
return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
switch (op) {
case LOCAL_CPUS:
if (setsize != sizeof(cpuset_t))
return (EINVAL);
*cpuset = cpuset_domain[d];
return (0);
case INTR_CPUS:
error = bus_generic_get_cpus(dev, child, op, setsize, cpuset);
if (error != 0)
return (error);
if (setsize != sizeof(cpuset_t))
return (EINVAL);
CPU_AND(cpuset, cpuset, &cpuset_domain[d]);
return (0);
default:
return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
}
}
/*
* Fetch the NUMA domain for the given device 'dev'.
*
* If a device has a _PXM method, map that to a NUMA domain.
* Otherwise, pass the request up to the parent.
* If there's no matching domain or the domain cannot be
* determined, return ENOENT.
*/
int
acpi_get_domain(device_t dev, device_t child, int *domain)
{
int d;
d = acpi_parse_pxm(child);
if (d >= 0) {
*domain = d;
return (0);
}
if (d == -1)
return (ENOENT);
/* No _PXM node; go up a level */
return (bus_generic_get_domain(dev, child, domain));
}
static struct rman *
acpi_get_rman(device_t bus, int type, u_int flags)
{
/* Only memory and IO resources are managed. */
switch (type) {
case SYS_RES_IOPORT:
return (&acpi_rman_io);
case SYS_RES_MEMORY:
return (&acpi_rman_mem);
default:
return (NULL);
}
}
/*
* 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 acpi_softc *sc = device_get_softc(dev);
struct resource *res;
struct resource_list_entry *rle;
struct rman *rm;
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) <= 0)
device_probe_and_attach(children[i]);
}
free(children, M_TEMP);
STAILQ_FOREACH(rle, &sc->sysres_rl, link) {
if (rle->res != NULL) {
device_printf(dev, "duplicate resource for %jx\n", rle->start);
continue;
}
/* Only memory and IO resources are valid here. */
rm = acpi_get_rman(dev, rle->type, 0);
if (rm == NULL)
continue;
/* Pre-allocate resource and add to our rman pool. */
res = bus_alloc_resource(dev, rle->type,
&rle->rid, rle->start, rle->start + rle->count - 1, rle->count,
RF_ACTIVE | RF_UNMAPPED);
if (res != NULL) {
rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
rle->res = res;
} else if (bootverbose)
device_printf(dev, "reservation of %jx, %jx (%d) failed\n",
rle->start, rle->count, rle->type);
}
return (0);
}
/*
* Reserve declared resources for active devices found during the
* namespace scan once the boot-time attach of devices has completed.
*
* Ideally reserving firmware-assigned resources would work in a
* depth-first traversal of the device namespace, but this is
* complicated. In particular, not all resources are enumerated by
* ACPI (e.g. PCI bridges and devices enumerate their resources via
* other means). Some systems also enumerate devices via ACPI behind
* PCI bridges but without a matching a PCI device_t enumerated via
* PCI bus scanning, the device_t's end up as direct children of
* acpi0. Doing this scan late is not ideal, but works for now.
*/
static void
acpi_reserve_resources(device_t dev)
{
struct resource_list_entry *rle;
struct resource_list *rl;
struct acpi_device *ad;
device_t *children;
int child_count, i;
if (device_get_children(dev, &children, &child_count) != 0)
return;
for (i = 0; i < child_count; i++) {
ad = device_get_ivars(children[i]);
rl = &ad->ad_rl;
/* Don't reserve system resources. */
if (ACPI_ID_PROBE(dev, children[i], sysres_ids, NULL) <= 0)
continue;
STAILQ_FOREACH(rle, rl, link) {
/*
* Don't reserve IRQ resources. There are many sticky things
* to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
* when using legacy routing).
*/
if (rle->type == SYS_RES_IRQ)
continue;
/*
* Don't reserve the resource if it is already allocated.
* The acpi_ec(4) driver can allocate its resources early
* if ECDT is present.
*/
if (rle->res != NULL)
continue;
/*
* Try to reserve the resource from our parent. If this
* fails because the resource is a system resource, just
* let it be. The resource range is already reserved so
* that other devices will not use it. If the driver
* needs to allocate the resource, then
* acpi_alloc_resource() will sub-alloc from the system
* resource.
*/
resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
rle->start, rle->end, rle->count, 0);
}
}
free(children, M_TEMP);
}
static int
acpi_set_resource(device_t dev, device_t child, int type, int rid,
rman_res_t start, rman_res_t count)
{
struct acpi_device *ad = device_get_ivars(child);
struct resource_list *rl = &ad->ad_rl;
rman_res_t end;
#ifdef INTRNG
/* map with default for now */
if (type == SYS_RES_IRQ)
start = (rman_res_t)acpi_map_intr(child, (u_int)start,
acpi_get_handle(child));
#endif
/* If the resource is already allocated, fail. */
if (resource_list_busy(rl, type, rid))
return (EBUSY);
/* If the resource is already reserved, release it. */
if (resource_list_reserved(rl, type, rid))
resource_list_unreserve(rl, dev, child, type, rid);
/* Add the resource. */
end = (start + count - 1);
resource_list_add(rl, type, rid, start, end, count);
return (0);
}
static struct resource *
acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
#ifndef INTRNG
ACPI_RESOURCE ares;
#endif
struct acpi_device *ad;
struct resource_list_entry *rle;
struct resource_list *rl;
struct resource *res;
int isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
/*
* First attempt at allocating the resource. For direct children,
* use resource_list_alloc() to handle reserved resources. For
* other devices, pass the request up to our parent.
*/
if (bus == device_get_parent(child)) {
ad = device_get_ivars(child);
rl = &ad->ad_rl;
/*
* Simulate the behavior of the ISA bus for direct children
* devices. That is, if a non-default range is specified for
* a resource that doesn't exist, use bus_set_resource() to
* add the resource before allocating it. Note that these
* resources will not be reserved.
*/
if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
resource_list_add(rl, type, *rid, start, end, count);
res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
flags);
#ifndef INTRNG
if (res != NULL && type == 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);
}
#endif
/*
* If this is an allocation of the "default" range for a given
* RID, fetch the exact bounds for this resource from the
* resource list entry to try to allocate the range from the
* system resource regions.
*/
if (res == NULL && isdefault) {
rle = resource_list_find(rl, type, *rid);
if (rle != NULL) {
start = rle->start;
end = rle->end;
count = rle->count;
}
}
} else
res = bus_generic_alloc_resource(bus, child, type, rid,
start, end, count, flags);
/*
* If the first attempt failed and this is an allocation of a
* specific range, try to satisfy the request via a suballocation
* from our system resource regions.
*/
if (res == NULL && start + count - 1 == end)
res = bus_generic_rman_alloc_resource(bus, child, type, rid, start, end,
count, flags);
return (res);
}
static bool
acpi_is_resource_managed(device_t bus, struct resource *r)
{
struct rman *rm;
rm = acpi_get_rman(bus, rman_get_type(r), rman_get_flags(r));
if (rm == NULL)
return (false);
return (rman_is_region_manager(r, rm));
}
static struct resource *
acpi_managed_resource(device_t bus, struct resource *r)
{
struct acpi_softc *sc = device_get_softc(bus);
struct resource_list_entry *rle;
KASSERT(acpi_is_resource_managed(bus, r),
("resource %p is not suballocated", r));
STAILQ_FOREACH(rle, &sc->sysres_rl, link) {
if (rle->type != rman_get_type(r) || rle->res == NULL)
continue;
if (rman_get_start(r) >= rman_get_start(rle->res) &&
rman_get_end(r) <= rman_get_end(rle->res))
return (rle->res);
}
return (NULL);
}
static int
acpi_adjust_resource(device_t bus, device_t child, struct resource *r,
rman_res_t start, rman_res_t end)
{
if (acpi_is_resource_managed(bus, r))
return (rman_adjust_resource(r, start, end));
return (bus_generic_adjust_resource(bus, child, r, start, end));
}
static int
acpi_release_resource(device_t bus, device_t child, struct resource *r)
{
/*
* If this resource belongs to one of our internal managers,
* deactivate it and release it to the local pool.
*/
if (acpi_is_resource_managed(bus, r))
return (bus_generic_rman_release_resource(bus, child, r));
return (bus_generic_rl_release_resource(bus, child, r));
}
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);
if (resource_list_busy(rl, type, rid)) {
device_printf(bus, "delete_resource: Resource still owned by child"
" (type=%d, rid=%d)\n", type, rid);
return;
}
if (resource_list_reserved(rl, type, rid))
resource_list_unreserve(rl, bus, child, type, rid);
resource_list_delete(rl, type, rid);
}
static int
acpi_activate_resource(device_t bus, device_t child, struct resource *r)
{
if (acpi_is_resource_managed(bus, r))
return (bus_generic_rman_activate_resource(bus, child, r));
return (bus_generic_activate_resource(bus, child, r));
}
static int
acpi_deactivate_resource(device_t bus, device_t child, struct resource *r)
{
if (acpi_is_resource_managed(bus, r))
return (bus_generic_rman_deactivate_resource(bus, child, r));
return (bus_generic_deactivate_resource(bus, child, r));
}
static int
acpi_map_resource(device_t bus, device_t child, struct resource *r,
struct resource_map_request *argsp, struct resource_map *map)
{
struct resource_map_request args;
struct resource *sysres;
rman_res_t length, start;
int error;
if (!acpi_is_resource_managed(bus, r))
return (bus_generic_map_resource(bus, child, r, argsp, map));
/* Resources must be active to be mapped. */
if (!(rman_get_flags(r) & RF_ACTIVE))
return (ENXIO);
resource_init_map_request(&args);
error = resource_validate_map_request(r, argsp, &args, &start, &length);
if (error)
return (error);
sysres = acpi_managed_resource(bus, r);
if (sysres == NULL)
return (ENOENT);
args.offset = start - rman_get_start(sysres);
args.length = length;
return (bus_map_resource(bus, sysres, &args, map));
}
static int
acpi_unmap_resource(device_t bus, device_t child, struct resource *r,
struct resource_map *map)
{
struct resource *sysres;
if (!acpi_is_resource_managed(bus, r))
return (bus_generic_unmap_resource(bus, child, r, map));
sysres = acpi_managed_resource(bus, r);
if (sysres == NULL)
return (ENOENT);
return (bus_unmap_resource(bus, sysres, map));
}
/* 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_HANDLE h;
uint32_t pnpid;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
/* Fetch and validate the HID. */
if ((h = acpi_get_handle(dev)) == NULL ||
ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
return_VALUE (0);
pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
PNP_EISAID(devinfo->HardwareId.String) : 0;
AcpiOsFree(devinfo);
return_VALUE (pnpid);
}
static int
acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
{
ACPI_DEVICE_INFO *devinfo;
ACPI_PNP_DEVICE_ID *ids;
ACPI_HANDLE h;
uint32_t *pnpid;
int i, valid;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
pnpid = cids;
/* Fetch and validate the CID */
if ((h = acpi_get_handle(dev)) == NULL ||
ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
return_VALUE (0);
if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
AcpiOsFree(devinfo);
return_VALUE (0);
}
if (devinfo->CompatibleIdList.Count < count)
count = devinfo->CompatibleIdList.Count;
ids = devinfo->CompatibleIdList.Ids;
for (i = 0, valid = 0; i < count; i++)
if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
strncmp(ids[i].String, "PNP", 3) == 0) {
*pnpid++ = PNP_EISAID(ids[i].String);
valid++;
}
AcpiOsFree(devinfo);
return_VALUE (valid);
}
static int
acpi_device_id_probe(device_t bus, device_t dev, char **ids, char **match)
{
ACPI_HANDLE h;
ACPI_OBJECT_TYPE t;
int rv;
int i;
h = acpi_get_handle(dev);
if (ids == NULL || h == NULL)
return (ENXIO);
t = acpi_get_type(dev);
if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
return (ENXIO);
/* Try to match one of the array of IDs with a HID or CID. */
for (i = 0; ids[i] != NULL; i++) {
rv = acpi_MatchHid(h, ids[i]);
if (rv == ACPI_MATCHHID_NOMATCH)
continue;
if (match != NULL) {
*match = ids[i];
}
return ((rv == ACPI_MATCHHID_HID)?
BUS_PROBE_DEFAULT : BUS_PROBE_LOW_PRIORITY);
}
return (ENXIO);
}
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 ACPI_STATUS
acpi_device_get_prop(device_t bus, device_t dev, ACPI_STRING propname,
const ACPI_OBJECT **value)
{
const ACPI_OBJECT *pkg, *name, *val;
struct acpi_device *ad;
ACPI_STATUS status;
int i;
ad = device_get_ivars(dev);
if (ad == NULL || propname == NULL)
return (AE_BAD_PARAMETER);
if (ad->dsd_pkg == NULL) {
if (ad->dsd.Pointer == NULL) {
status = acpi_find_dsd(ad);
if (ACPI_FAILURE(status))
return (status);
} else {
return (AE_NOT_FOUND);
}
}
for (i = 0; i < ad->dsd_pkg->Package.Count; i ++) {
pkg = &ad->dsd_pkg->Package.Elements[i];
if (pkg->Type != ACPI_TYPE_PACKAGE || pkg->Package.Count != 2)
continue;
name = &pkg->Package.Elements[0];
val = &pkg->Package.Elements[1];
if (name->Type != ACPI_TYPE_STRING)
continue;
if (strncmp(propname, name->String.Pointer, name->String.Length) == 0) {
if (value != NULL)
*value = val;
return (AE_OK);
}
}
return (AE_NOT_FOUND);
}
static ACPI_STATUS
acpi_find_dsd(struct acpi_device *ad)
{
const ACPI_OBJECT *dsd, *guid, *pkg;
ACPI_STATUS status;
ad->dsd.Length = ACPI_ALLOCATE_BUFFER;
ad->dsd.Pointer = NULL;
ad->dsd_pkg = NULL;
status = AcpiEvaluateObject(ad->ad_handle, "_DSD", NULL, &ad->dsd);
if (ACPI_FAILURE(status))
return (status);
dsd = ad->dsd.Pointer;
guid = &dsd->Package.Elements[0];
pkg = &dsd->Package.Elements[1];
if (guid->Type != ACPI_TYPE_BUFFER || pkg->Type != ACPI_TYPE_PACKAGE ||
guid->Buffer.Length != sizeof(acpi_dsd_uuid))
return (AE_NOT_FOUND);
if (memcmp(guid->Buffer.Pointer, &acpi_dsd_uuid,
sizeof(acpi_dsd_uuid)) == 0) {
ad->dsd_pkg = pkg;
return (AE_OK);
}
return (AE_NOT_FOUND);
}
static ssize_t
acpi_bus_get_prop_handle(const ACPI_OBJECT *hobj, void *propvalue, size_t size)
{
ACPI_OBJECT *pobj;
ACPI_HANDLE h;
if (hobj->Type != ACPI_TYPE_PACKAGE)
goto err;
if (hobj->Package.Count != 1)
goto err;
pobj = &hobj->Package.Elements[0];
if (pobj == NULL)
goto err;
if (pobj->Type != ACPI_TYPE_LOCAL_REFERENCE)
goto err;
h = acpi_GetReference(NULL, pobj);
if (h == NULL)
goto err;
if (propvalue != NULL && size >= sizeof(ACPI_HANDLE))
*(ACPI_HANDLE *)propvalue = h;
return (sizeof(ACPI_HANDLE));
err:
return (-1);
}
static ssize_t
acpi_bus_get_prop(device_t bus, device_t child, const char *propname,
void *propvalue, size_t size, device_property_type_t type)
{
ACPI_STATUS status;
const ACPI_OBJECT *obj;
status = acpi_device_get_prop(bus, child, __DECONST(char *, propname),
&obj);
if (ACPI_FAILURE(status))
return (-1);
switch (type) {
case DEVICE_PROP_ANY:
case DEVICE_PROP_BUFFER:
case DEVICE_PROP_UINT32:
case DEVICE_PROP_UINT64:
break;
case DEVICE_PROP_HANDLE:
return (acpi_bus_get_prop_handle(obj, propvalue, size));
default:
return (-1);
}
switch (obj->Type) {
case ACPI_TYPE_INTEGER:
if (type == DEVICE_PROP_UINT32) {
if (propvalue != NULL && size >= sizeof(uint32_t))
*((uint32_t *)propvalue) = obj->Integer.Value;
return (sizeof(uint32_t));
}
if (propvalue != NULL && size >= sizeof(uint64_t))
*((uint64_t *) propvalue) = obj->Integer.Value;
return (sizeof(uint64_t));
case ACPI_TYPE_STRING:
if (type != DEVICE_PROP_ANY &&
type != DEVICE_PROP_BUFFER)
return (-1);
if (propvalue != NULL && size > 0)
memcpy(propvalue, obj->String.Pointer,
MIN(size, obj->String.Length));
return (obj->String.Length);
case ACPI_TYPE_BUFFER:
if (propvalue != NULL && size > 0)
memcpy(propvalue, obj->Buffer.Pointer,
MIN(size, obj->Buffer.Length));
return (obj->Buffer.Length);
case ACPI_TYPE_PACKAGE:
if (propvalue != NULL && size >= sizeof(ACPI_OBJECT *)) {
*((ACPI_OBJECT **) propvalue) =
__DECONST(ACPI_OBJECT *, obj);
}
return (sizeof(ACPI_OBJECT *));
case ACPI_TYPE_LOCAL_REFERENCE:
if (propvalue != NULL && size >= sizeof(ACPI_HANDLE)) {
ACPI_HANDLE h;
h = acpi_GetReference(NULL,
__DECONST(ACPI_OBJECT *, obj));
memcpy(propvalue, h, sizeof(ACPI_HANDLE));
}
return (sizeof(ACPI_HANDLE));
default:
return (0);
}
}
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];
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 (dstate == NULL || 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.
* Note illegal _S0D is evaluated because some systems expect this.
*/
sc = device_get_softc(bus);
snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
status = acpi_GetInteger(handle, sxd, dstate);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
device_printf(dev, "failed to get %s on %s: %s\n", sxd,
acpi_name(handle), AcpiFormatException(status));
return (ENXIO);
}
return (0);
}
/* 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);
/* 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, NULL, &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.
*/
int
acpi_set_powerstate(device_t child, int state)
{
ACPI_HANDLE h;
ACPI_STATUS status;
h = acpi_get_handle(child);
if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
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_SUCCESS(status)) {
if (bootverbose)
device_printf(child, "set ACPI power state D%d on %s\n",
state, acpi_name(h));
} else if (status != AE_NOT_FOUND)
device_printf(child,
"failed to set ACPI power state D%d on %s: %s\n", state,
acpi_name(h), AcpiFormatException(status));
return (0);
}
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);
}
/*
* Look for a MCFG table. If it is present, use the settings for
* domain (segment) 0 to setup PCI config space access via the memory
* map.
*
* On non-x86 architectures (arm64 for now), this will be done from the
* PCI host bridge driver.
*/
static void
acpi_enable_pcie(void)
{
#if defined(__i386__) || defined(__amd64__)
ACPI_TABLE_HEADER *hdr;
ACPI_MCFG_ALLOCATION *alloc, *end;
ACPI_STATUS status;
status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
if (ACPI_FAILURE(status))
return;
end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
while (alloc < end) {
pcie_cfgregopen(alloc->Address, alloc->PciSegment,
alloc->StartBusNumber, alloc->EndBusNumber);
alloc++;
}
#endif
}
static void
acpi_platform_osc(device_t dev)
{
ACPI_HANDLE sb_handle;
ACPI_STATUS status;
uint32_t cap_set[2];
/* 0811B06E-4A27-44F9-8D60-3CBBC22E7B48 */
static uint8_t acpi_platform_uuid[ACPI_UUID_LENGTH] = {
0x6e, 0xb0, 0x11, 0x08, 0x27, 0x4a, 0xf9, 0x44,
0x8d, 0x60, 0x3c, 0xbb, 0xc2, 0x2e, 0x7b, 0x48
};
if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
return;
cap_set[1] = 0x10; /* APEI Support */
status = acpi_EvaluateOSC(sb_handle, acpi_platform_uuid, 1,
nitems(cap_set), cap_set, cap_set, false);
if (ACPI_FAILURE(status)) {
if (status == AE_NOT_FOUND)
return;
device_printf(dev, "_OSC failed: %s\n",
AcpiFormatException(status));
return;
}
}
/*
* 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,
NULL, 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 statically and from the namespace. */
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
bus_generic_attach(bus);
/*
* Reserve resources allocated to children but not yet allocated
* by a driver.
*/
acpi_reserve_resources(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.
*/
static void
acpi_probe_order(ACPI_HANDLE handle, int *order)
{
ACPI_OBJECT_TYPE type;
/*
* 0. CPUs
* 1. I/O port and memory system resource holders
* 2. Clocks and timers (to handle early accesses)
* 3. Embedded controllers (to handle early accesses)
* 4. PCI Link Devices
*/
AcpiGetType(handle, &type);
if (type == ACPI_TYPE_PROCESSOR)
*order = 0;
else if (acpi_MatchHid(handle, "PNP0C01") ||
acpi_MatchHid(handle, "PNP0C02"))
*order = 1;
else if (acpi_MatchHid(handle, "PNP0100") ||
acpi_MatchHid(handle, "PNP0103") ||
acpi_MatchHid(handle, "PNP0B00"))
*order = 2;
else if (acpi_MatchHid(handle, "PNP0C09"))
*order = 3;
else if (acpi_MatchHid(handle, "PNP0C0F"))
*order = 4;
}
/*
* 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_DEVICE_INFO *devinfo;
struct acpi_device *ad;
struct acpi_prw_data prw;
ACPI_OBJECT_TYPE type;
ACPI_HANDLE h;
device_t bus, child;
char *handle_str;
int order;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
if (acpi_disabled("children"))
return_ACPI_STATUS (AE_OK);
/* 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))) {
handle_str = acpi_name(handle);
switch (type) {
case ACPI_TYPE_DEVICE:
/*
* Since we scan from \, be sure to skip system scope objects.
* \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
* BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
* during the initialization and \_TZ_ is to support Notify() on it.
*/
if (strcmp(handle_str, "\\_SB_") == 0 ||
strcmp(handle_str, "\\_TZ_") == 0)
break;
if (acpi_parse_prw(handle, &prw) == 0)
AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
/*
* Ignore devices that do not have a _HID or _CID. They should
* be discovered by other buses (e.g. the PCI bus driver).
*/
if (!acpi_has_hid(handle))
break;
/* FALLTHROUGH */
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_POWER:
/*
* 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).
*/
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
order = level * 10 + ACPI_DEV_BASE_ORDER;
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;
/*
* RTC Device should be enabled for CMOS register space
* unless FADT indicate it is not present.
* (checked in RTC probe routine.)
*/
if (acpi_MatchHid(handle, "PNP0B00"))
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);
ad = device_get_ivars(child);
ad->ad_cls_class = 0xffffff;
if (ACPI_SUCCESS(AcpiGetObjectInfo(handle, &devinfo))) {
if ((devinfo->Valid & ACPI_VALID_CLS) != 0 &&
devinfo->ClassCode.Length >= ACPI_PCICLS_STRING_SIZE) {
ad->ad_cls_class = strtoul(devinfo->ClassCode.String,
NULL, 16);
}
AcpiOsFree(devinfo);
}
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, void *data)
{
}
static void
acpi_shutdown_final(void *arg, int howto)
{
struct acpi_softc *sc = (struct acpi_softc *)arg;
register_t intr;
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.
*/
if ((howto & RB_POWEROFF) != 0) {
status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
if (ACPI_FAILURE(status)) {
device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
AcpiFormatException(status));
return;
}
device_printf(sc->acpi_dev, "Powering system off\n");
intr = intr_disable();
status = AcpiEnterSleepState(ACPI_STATE_S5);
if (ACPI_FAILURE(status)) {
intr_restore(intr);
device_printf(sc->acpi_dev, "power-off failed - %s\n",
AcpiFormatException(status));
} else {
DELAY(1000000);
intr_restore(intr);
device_printf(sc->acpi_dev, "power-off failed - timeout\n");
}
} else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
/* Reboot using the reset register. */
status = AcpiReset();
if (ACPI_SUCCESS(status)) {
DELAY(1000000);
device_printf(sc->acpi_dev, "reset failed - timeout\n");
} else if (status != AE_NOT_EXIST)
device_printf(sc->acpi_dev, "reset failed - %s\n",
AcpiFormatException(status));
} else if (sc->acpi_do_disable && !KERNEL_PANICKED()) {
/*
* Only disable ACPI if the user requested. On some systems, writing
* the disable value to SMI_CMD hangs the system.
*/
device_printf(sc->acpi_dev, "Shutting down\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_HANDLE h;
UINT32 s;
ACPI_STATUS status;
h = acpi_get_handle(dev);
if (h == NULL)
return (FALSE);
#ifdef ACPI_EARLY_EPYC_WAR
/*
* Certain Treadripper boards always returns 0 for FreeBSD because it
* only returns non-zero for the OS string "Windows 2015". Otherwise it
* will return zero. Force them to always be treated as present.
* Beata versions were worse: they always returned 0.
*/
if (acpi_MatchHid(h, "AMDI0020") || acpi_MatchHid(h, "AMDI0010"))
return (TRUE);
#endif
status = acpi_GetInteger(h, "_STA", &s);
/*
* If no _STA method or if it failed, then assume that
* the device is present.
*/
if (ACPI_FAILURE(status))
return (TRUE);
return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE);
}
/*
* Returns true if the battery is actually present and inserted.
*/
BOOLEAN
acpi_BatteryIsPresent(device_t dev)
{
ACPI_HANDLE h;
UINT32 s;
ACPI_STATUS status;
h = acpi_get_handle(dev);
if (h == NULL)
return (FALSE);
status = acpi_GetInteger(h, "_STA", &s);
/*
* If no _STA method or if it failed, then assume that
* the device is present.
*/
if (ACPI_FAILURE(status))
return (TRUE);
return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE);
}
/*
* Returns true if a device has at least one valid device ID.
*/
BOOLEAN
acpi_has_hid(ACPI_HANDLE h)
{
ACPI_DEVICE_INFO *devinfo;
BOOLEAN ret;
if (h == NULL ||
ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
return (FALSE);
ret = FALSE;
if ((devinfo->Valid & ACPI_VALID_HID) != 0)
ret = TRUE;
else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
if (devinfo->CompatibleIdList.Count > 0)
ret = TRUE;
AcpiOsFree(devinfo);
return (ret);
}
/*
* Match a HID string against a handle
* returns ACPI_MATCHHID_HID if _HID match
* ACPI_MATCHHID_CID if _CID match and not _HID match.
* ACPI_MATCHHID_NOMATCH=0 if no match.
*/
int
acpi_MatchHid(ACPI_HANDLE h, const char *hid)
{
ACPI_DEVICE_INFO *devinfo;
BOOLEAN ret;
int i;
if (hid == NULL || h == NULL ||
ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
return (ACPI_MATCHHID_NOMATCH);
ret = ACPI_MATCHHID_NOMATCH;
if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
strcmp(hid, devinfo->HardwareId.String) == 0)
ret = ACPI_MATCHHID_HID;
else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
ret = ACPI_MATCHHID_CID;
break;
}
}
AcpiOsFree(devinfo);
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;
}
}
ACPI_STATUS
acpi_GetProperty(device_t dev, ACPI_STRING propname,
const ACPI_OBJECT **value)
{
device_t bus = device_get_parent(dev);
return (ACPI_GET_PROPERTY(bus, dev, propname, value));
}
/*
* 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 = &param;
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 = ACPI_RS_SIZE_MIN;
}
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 = ACPI_RS_SIZE_MIN;
return (AE_OK);
}
UINT64
acpi_DSMQuery(ACPI_HANDLE h, const uint8_t *uuid, int revision)
{
/*
* ACPI spec 9.1.1 defines this.
*
* "Arg2: Function Index Represents a specific function whose meaning is
* specific to the UUID and Revision ID. Function indices should start
* with 1. Function number zero is a query function (see the special
* return code defined below)."
*/
ACPI_BUFFER buf;
ACPI_OBJECT *obj;
UINT64 ret = 0;
int i;
if (!ACPI_SUCCESS(acpi_EvaluateDSM(h, uuid, revision, 0, NULL, &buf))) {
ACPI_INFO(("Failed to enumerate DSM functions\n"));
return (0);
}
obj = (ACPI_OBJECT *)buf.Pointer;
KASSERT(obj, ("Object not allowed to be NULL\n"));
/*
* From ACPI 6.2 spec 9.1.1:
* If Function Index = 0, a Buffer containing a function index bitfield.
* Otherwise, the return value and type depends on the UUID and revision
* ID (see below).
*/
switch (obj->Type) {
case ACPI_TYPE_BUFFER:
for (i = 0; i < MIN(obj->Buffer.Length, sizeof(ret)); i++)
ret |= (((uint64_t)obj->Buffer.Pointer[i]) << (i * 8));
break;
case ACPI_TYPE_INTEGER:
ACPI_BIOS_WARNING((AE_INFO,
"Possibly buggy BIOS with ACPI_TYPE_INTEGER for function enumeration\n"));
ret = obj->Integer.Value;
break;
default:
ACPI_WARNING((AE_INFO, "Unexpected return type %u\n", obj->Type));
};
AcpiOsFree(obj);
return ret;
}
/*
* DSM may return multiple types depending on the function. It is therefore
* unsafe to use the typed evaluation. It is highly recommended that the caller
* check the type of the returned object.
*/
ACPI_STATUS
acpi_EvaluateDSM(ACPI_HANDLE handle, const uint8_t *uuid, int revision,
UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf)
{
return (acpi_EvaluateDSMTyped(handle, uuid, revision, function,
package, out_buf, ACPI_TYPE_ANY));
}
ACPI_STATUS
acpi_EvaluateDSMTyped(ACPI_HANDLE handle, const uint8_t *uuid, int revision,
UINT64 function, ACPI_OBJECT *package, ACPI_BUFFER *out_buf,
ACPI_OBJECT_TYPE type)
{
ACPI_OBJECT arg[4];
ACPI_OBJECT_LIST arglist;
ACPI_BUFFER buf;
ACPI_STATUS status;
if (out_buf == NULL)
return (AE_NO_MEMORY);
arg[0].Type = ACPI_TYPE_BUFFER;
arg[0].Buffer.Length = ACPI_UUID_LENGTH;
arg[0].Buffer.Pointer = __DECONST(uint8_t *, uuid);
arg[1].Type = ACPI_TYPE_INTEGER;
arg[1].Integer.Value = revision;
arg[2].Type = ACPI_TYPE_INTEGER;
arg[2].Integer.Value = function;
if (package) {
arg[3] = *package;
} else {
arg[3].Type = ACPI_TYPE_PACKAGE;
arg[3].Package.Count = 0;
arg[3].Package.Elements = NULL;
}
arglist.Pointer = arg;
arglist.Count = 4;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObjectTyped(handle, "_DSM", &arglist, &buf, type);
if (ACPI_FAILURE(status))
return (status);
KASSERT(ACPI_SUCCESS(status), ("Unexpected status"));
*out_buf = buf;
return (status);
}
ACPI_STATUS
acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count,
uint32_t *caps_in, uint32_t *caps_out, bool query)
{
ACPI_OBJECT arg[4], *ret;
ACPI_OBJECT_LIST arglist;
ACPI_BUFFER buf;
ACPI_STATUS status;
arglist.Pointer = arg;
arglist.Count = 4;
arg[0].Type = ACPI_TYPE_BUFFER;
arg[0].Buffer.Length = ACPI_UUID_LENGTH;
arg[0].Buffer.Pointer = uuid;
arg[1].Type = ACPI_TYPE_INTEGER;
arg[1].Integer.Value = revision;
arg[2].Type = ACPI_TYPE_INTEGER;
arg[2].Integer.Value = count;
arg[3].Type = ACPI_TYPE_BUFFER;
arg[3].Buffer.Length = count * sizeof(*caps_in);
arg[3].Buffer.Pointer = (uint8_t *)caps_in;
caps_in[0] = query ? 1 : 0;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObjectTyped(handle, "_OSC", &arglist, &buf,
ACPI_TYPE_BUFFER);
if (ACPI_FAILURE(status))
return (status);
if (caps_out != NULL) {
ret = buf.Pointer;
if (ret->Buffer.Length != count * sizeof(*caps_out)) {
AcpiOsFree(buf.Pointer);
return (AE_BUFFER_OVERFLOW);
}
bcopy(ret->Buffer.Pointer, caps_out, ret->Buffer.Length);
}
AcpiOsFree(buf.Pointer);
return (status);
}
/*
* Set interrupt model.
*/
ACPI_STATUS
acpi_SetIntrModel(int model)
{
return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
}
/*
* Walk subtables of a table and call a callback routine for each
* subtable. The caller should provide the first subtable and a
* pointer to the end of the table. This can be used to walk tables
* such as MADT and SRAT that use subtable entries.
*/
void
acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
void *arg)
{
ACPI_SUBTABLE_HEADER *entry;
for (entry = first; (void *)entry < end; ) {
/* Avoid an infinite loop if we hit a bogus entry. */
if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
return;
handler(entry, arg);
entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
}
}
/*
* 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) {
device_printf(sc->acpi_dev,
"warning: acpi_SetSleepState() deprecated, need to update your software\n");
once = 1;
}
return (acpi_EnterSleepState(sc, state));
}
#if defined(__amd64__) || defined(__i386__)
static void
acpi_sleep_force_task(void *context)
{
struct acpi_softc *sc = (struct acpi_softc *)context;
if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
sc->acpi_next_sstate);
}
static void
acpi_sleep_force(void *arg)
{
struct acpi_softc *sc = (struct acpi_softc *)arg;
device_printf(sc->acpi_dev,
"suspend request timed out, forcing sleep now\n");
/*
* XXX Suspending from callout causes freezes in DEVICE_SUSPEND().
* Suspend from acpi_task thread instead.
*/
if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
acpi_sleep_force_task, sc)))
device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
}
#endif
/*
* 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)
{
#if defined(__amd64__) || defined(__i386__)
struct apm_clone_data *clone;
ACPI_STATUS status;
if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
return (EINVAL);
if (!acpi_sleep_states[state])
return (EOPNOTSUPP);
/*
* If a reboot/shutdown/suspend request is already in progress or
* suspend is blocked due to an upcoming shutdown, just return.
*/
if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) {
return (0);
}
/* Wait until sleep is enabled. */
while (sc->acpi_sleep_disabled) {
AcpiOsSleep(1000);
}
ACPI_LOCK(acpi);
sc->acpi_next_sstate = state;
/* S5 (soft-off) should be entered directly with no waiting. */
if (state == ACPI_STATE_S5) {
ACPI_UNLOCK(acpi);
status = acpi_EnterSleepState(sc, state);
return (ACPI_SUCCESS(status) ? 0 : ENXIO);
}
/* Record the pending state and notify all apm devices. */
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_LOCKED(&clone->sel_read.si_note, 0);
}
}
/* If devd(8) is not running, immediately enter the sleep state. */
if (!devctl_process_running()) {
ACPI_UNLOCK(acpi);
status = acpi_EnterSleepState(sc, state);
return (ACPI_SUCCESS(status) ? 0 : ENXIO);
}
/*
* 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);
/* Now notify devd(8) also. */
acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
return (0);
#else
/* This platform does not support acpi suspend/resume. */
return (EOPNOTSUPP);
#endif
}
/*
* 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)
{
#if defined(__amd64__) || defined(__i386__)
struct acpi_softc *sc;
int ret, sleeping;
/* 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);
device_printf(sc->acpi_dev,
"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.
*/
sleeping = TRUE;
clone->notify_status = APM_EV_ACKED;
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);
#else
/* This platform does not support acpi suspend/resume. */
return (EOPNOTSUPP);
#endif
}
static void
acpi_sleep_enable(void *arg)
{
struct acpi_softc *sc = (struct acpi_softc *)arg;
ACPI_LOCK_ASSERT(acpi);
/* Reschedule if the system is not fully up and running. */
if (!AcpiGbl_SystemAwakeAndRunning) {
callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
return;
}
sc->acpi_sleep_disabled = FALSE;
}
static ACPI_STATUS
acpi_sleep_disable(struct acpi_softc *sc)
{
ACPI_STATUS status;
/* Fail if the system is not fully up and running. */
if (!AcpiGbl_SystemAwakeAndRunning)
return (AE_ERROR);
ACPI_LOCK(acpi);
status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
sc->acpi_sleep_disabled = TRUE;
ACPI_UNLOCK(acpi);
return (status);
}
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)
{
register_t intr;
ACPI_STATUS status;
ACPI_EVENT_STATUS power_button_status;
enum acpi_sleep_state slp_state;
int sleep_result;
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
return_ACPI_STATUS (AE_BAD_PARAMETER);
if (!acpi_sleep_states[state]) {
device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
state);
return (AE_SUPPORT);
}
/* Re-entry once we're suspending is not allowed. */
status = acpi_sleep_disable(sc);
if (ACPI_FAILURE(status)) {
device_printf(sc->acpi_dev,
"suspend request ignored (not ready yet)\n");
return (status);
}
if (state == ACPI_STATE_S5) {
/*
* Shut down cleanly and power off. This will call us back through the
* shutdown handlers.
*/
shutdown_nice(RB_POWEROFF);
return_ACPI_STATUS (AE_OK);
}
EVENTHANDLER_INVOKE(power_suspend_early);
stop_all_proc();
suspend_all_fs();
EVENTHANDLER_INVOKE(power_suspend);
#ifdef EARLY_AP_STARTUP
MPASS(mp_ncpus == 1 || smp_started);
thread_lock(curthread);
sched_bind(curthread, 0);
thread_unlock(curthread);
#else
if (smp_started) {
thread_lock(curthread);
sched_bind(curthread, 0);
thread_unlock(curthread);
}
#endif
/*
* Be sure to hold Giant across DEVICE_SUSPEND/RESUME
*/
bus_topo_lock();
slp_state = ACPI_SS_NONE;
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");
goto backout;
}
slp_state = ACPI_SS_DEV_SUSPEND;
status = AcpiEnterSleepStatePrep(state);
if (ACPI_FAILURE(status)) {
device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
AcpiFormatException(status));
goto backout;
}
slp_state = ACPI_SS_SLP_PREP;
if (sc->acpi_sleep_delay > 0)
DELAY(sc->acpi_sleep_delay * 1000000);
suspendclock();
intr = intr_disable();
if (state != ACPI_STATE_S1) {
sleep_result = acpi_sleep_machdep(sc, state);
acpi_wakeup_machdep(sc, state, sleep_result, 0);
/*
* XXX According to ACPI specification SCI_EN bit should be restored
* by ACPI platform (BIOS, firmware) to its pre-sleep state.
* Unfortunately some BIOSes fail to do that and that leads to
* unexpected and serious consequences during wake up like a system
* getting stuck in SMI handlers.
* This hack is picked up from Linux, which claims that it follows
* Windows behavior.
*/
if (sleep_result == 1 && state != ACPI_STATE_S4)
AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
if (sleep_result == 1 && state == ACPI_STATE_S3) {
/*
* Prevent mis-interpretation of the wakeup by power button
* as a request for power off.
* Ideally we should post an appropriate wakeup event,
* perhaps using acpi_event_power_button_wake or alike.
*
* Clearing of power button status after wakeup is mandated
* by ACPI specification in section "Fixed Power Button".
*
* XXX As of ACPICA 20121114 AcpiGetEventStatus provides
* status as 0/1 corressponding to inactive/active despite
* its type being ACPI_EVENT_STATUS. In other words,
* we should not test for ACPI_EVENT_FLAG_SET for time being.
*/
if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
&power_button_status)) && power_button_status != 0) {
AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
device_printf(sc->acpi_dev,
"cleared fixed power button status\n");
}
}
intr_restore(intr);
/* call acpi_wakeup_machdep() again with interrupt enabled */
acpi_wakeup_machdep(sc, state, sleep_result, 1);
AcpiLeaveSleepStatePrep(state);
if (sleep_result == -1)
goto backout;
/* Re-enable ACPI hardware on wakeup from sleep state 4. */
if (state == ACPI_STATE_S4)
AcpiEnable();
} else {
status = AcpiEnterSleepState(state);
intr_restore(intr);
AcpiLeaveSleepStatePrep(state);
if (ACPI_FAILURE(status)) {
device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
AcpiFormatException(status));
goto backout;
}
}
slp_state = ACPI_SS_SLEPT;
/*
* Back out state according to how far along we got in the suspend
* process. This handles both the error and success cases.
*/
backout:
if (slp_state >= ACPI_SS_SLP_PREP)
resumeclock();
if (slp_state >= ACPI_SS_GPE_SET) {
acpi_wake_prep_walk(state);
sc->acpi_sstate = ACPI_STATE_S0;
}
if (slp_state >= ACPI_SS_DEV_SUSPEND)
DEVICE_RESUME(root_bus);
if (slp_state >= ACPI_SS_SLP_PREP)
AcpiLeaveSleepState(state);
if (slp_state >= ACPI_SS_SLEPT) {
#if defined(__i386__) || defined(__amd64__)
/* NB: we are still using ACPI timecounter at this point. */
resume_TSC();
#endif
acpi_resync_clock(sc);
acpi_enable_fixed_events(sc);
}
sc->acpi_next_sstate = 0;
bus_topo_unlock();
#ifdef EARLY_AP_STARTUP
thread_lock(curthread);
sched_unbind(curthread);
thread_unlock(curthread);
#else
if (smp_started) {
thread_lock(curthread);
sched_unbind(curthread);
thread_unlock(curthread);
}
#endif
resume_all_fs();
resume_all_proc();
EVENTHANDLER_INVOKE(power_resume);
/* Allow another sleep request after a while. */
callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
/* Run /etc/rc.resume after we are back. */
if (devctl_process_running())
acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
return_ACPI_STATUS (status);
}
static void
acpi_resync_clock(struct acpi_softc *sc)
{
/*
* Warm up timecounter again and reset system clock.
*/
(void)timecounter->tc_get_timecount(timecounter);
inittodr(time_second + sc->acpi_sleep_delay);
}
/* 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 = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
ACPI_GPE_ENABLE);
if (ACPI_FAILURE(status)) {
device_printf(dev, "enable wake failed\n");
return (ENXIO);
}
acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
} else {
status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
ACPI_GPE_DISABLE);
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) {
AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
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) {
AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
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, NULL, &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 | CTLFLAG_NEEDGIANT, 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)
{
struct acpi_softc *sc = (struct acpi_softc *)arg;
int ret;
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
/* Check if button action is disabled or unknown. */
if (state == ACPI_STATE_UNKNOWN)
return;
/* Request that the system prepare to enter the given suspend state. */
ret = acpi_ReqSleepState(sc, state);
if (ret != 0)
device_printf(sc->acpi_dev,
"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)
*/
static void
acpi_invoke_sleep_eventhandler(void *context)
{
EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
}
static void
acpi_invoke_wake_eventhandler(void *context)
{
EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
}
UINT32
acpi_event_power_button_sleep(void *context)
{
struct acpi_softc *sc = (struct acpi_softc *)context;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
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__);
if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
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__);
if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
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__);
if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
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 = kern_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 = kern_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);
}
static void
acpi_lookup(void *arg, const char *name, device_t *dev)
{
ACPI_HANDLE handle;
if (*dev != NULL)
return;
/*
* Allow any handle name that is specified as an absolute path and
* starts with '\'. We could restrict this to \_SB and friends,
* but see acpi_probe_children() for notes on why we scan the entire
* namespace for devices.
*
* XXX: The pathname argument to AcpiGetHandle() should be fixed to
* be const.
*/
if (name[0] != '\\')
return;
if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name),
&handle)))
return;
*dev = acpi_get_device(handle);
}
/*
* 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, struct thread *td)
{
return (0);
}
static int
acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
{
return (0);
}
static int
acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *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)
return (acpi_ReqSleepState(sc, state));
device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
error = EOPNOTSUPP;
break;
case ACPIIO_ACKSLPSTATE:
error = *(int *)addr;
error = acpi_AckSleepState(sc->acpi_clone, error);
break;
case ACPIIO_SETSLPSTATE: /* DEPRECATED */
state = *(int *)addr;
if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
return (EINVAL);
if (!acpi_sleep_states[state])
return (EOPNOTSUPP);
if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
error = ENXIO;
break;
default:
error = ENXIO;
break;
}
return (error);
}
static int
acpi_sname2sstate(const char *sname)
{
int sstate;
if (toupper(sname[0]) == 'S') {
sstate = sname[1] - '0';
if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
sname[2] == '\0')
return (sstate);
} else if (strcasecmp(sname, "NONE") == 0)
return (ACPI_STATE_UNKNOWN);
return (-1);
}
static const char *
acpi_sstate2sname(int sstate)
{
static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
return (snames[sstate]);
else if (sstate == ACPI_STATE_UNKNOWN)
return ("NONE");
return (NULL);
}
static int
acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
{
int error;
struct sbuf sb;
UINT8 state;
sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
if (acpi_sleep_states[state])
sbuf_printf(&sb, "%s ", acpi_sstate2sname(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, new_state, old_state;
old_state = *(int *)oidp->oid_arg1;
strlcpy(sleep_state, acpi_sstate2sname(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_sname2sstate(sleep_state);
if (new_state < ACPI_STATE_S1)
return (EINVAL);
if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
return (EOPNOTSUPP);
if (new_state != old_state)
*(int *)oidp->oid_arg1 = new_state;
}
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, FALSE);
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_INIT", ACPI_LV_INIT},
{"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
{"ACPI_LV_INFO", ACPI_LV_INFO},
{"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
{"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 = kern_getenv("debug.acpi.layer");
level = kern_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;
char temp[128];
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);
strlcpy(temp, sbuf_data(&sb), sizeof(temp));
sbuf_delete(&sb);
error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
/* Check for error or no change */
if (error == 0 && req->newptr != NULL) {
*dbg = 0;
kern_setenv((char *)oidp->oid_arg1, temp);
acpi_set_debugging(NULL);
}
ACPI_SERIAL_END(acpi);
return (error);
}
SYSCTL_PROC(_debug_acpi, OID_AUTO, layer,
CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.layer", 0,
acpi_debug_sysctl, "A",
"");
SYSCTL_PROC(_debug_acpi, OID_AUTO, level,
CTLFLAG_RW | CTLTYPE_STRING | CTLFLAG_MPSAFE, "debug.acpi.level", 0,
acpi_debug_sysctl, "A",
"");
#endif /* ACPI_DEBUG */
static int
acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
{
int error;
int old;
old = acpi_debug_objects;
error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
if (error != 0 || req->newptr == NULL)
return (error);
if (old == acpi_debug_objects || (old && acpi_debug_objects))
return (0);
ACPI_SERIAL_BEGIN(acpi);
AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
ACPI_SERIAL_END(acpi);
return (0);
}
static int
acpi_parse_interfaces(char *str, struct acpi_interface *iface)
{
char *p;
size_t len;
int i, j;
p = str;
while (isspace(*p) || *p == ',')
p++;
len = strlen(p);
if (len == 0)
return (0);
p = strdup(p, M_TEMP);
for (i = 0; i < len; i++)
if (p[i] == ',')
p[i] = '\0';
i = j = 0;
while (i < len)
if (isspace(p[i]) || p[i] == '\0')
i++;
else {
i += strlen(p + i) + 1;
j++;
}
if (j == 0) {
free(p, M_TEMP);
return (0);
}
iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
iface->num = j;
i = j = 0;
while (i < len)
if (isspace(p[i]) || p[i] == '\0')
i++;
else {
iface->data[j] = p + i;
i += strlen(p + i) + 1;
j++;
}
return (j);
}
static void
acpi_free_interfaces(struct acpi_interface *iface)
{
free(iface->data[0], M_TEMP);
free(iface->data, M_TEMP);
}
static void
acpi_reset_interfaces(device_t dev)
{
struct acpi_interface list;
ACPI_STATUS status;
int i;
if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
for (i = 0; i < list.num; i++) {
status = AcpiInstallInterface(list.data[i]);
if (ACPI_FAILURE(status))
device_printf(dev,
"failed to install _OSI(\"%s\"): %s\n",
list.data[i], AcpiFormatException(status));
else if (bootverbose)
device_printf(dev, "installed _OSI(\"%s\")\n",
list.data[i]);
}
acpi_free_interfaces(&list);
}
if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
for (i = 0; i < list.num; i++) {
status = AcpiRemoveInterface(list.data[i]);
if (ACPI_FAILURE(status))
device_printf(dev,
"failed to remove _OSI(\"%s\"): %s\n",
list.data[i], AcpiFormatException(status));
else if (bootverbose)
device_printf(dev, "removed _OSI(\"%s\")\n",
list.data[i]);
}
acpi_free_interfaces(&list);
}
}
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, NULL);
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