d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
dd7a7dd6af
freebsd-skq/sys/dev/acpica/acpivar.h
Konstantin Belousov b57a73f8e7 If x86 CPU implementation of the MWAIT instruction reasonably 
interacts with interrupts, query ACPI and use MWAIT for entrance into
Cx sleep states.  Support C1 "I/O then halt" mode.  See Intel'
document 302223-007 "Intelб╝ Processor Vendor-Specific ACPI Interface
Specification" for description.

Move the acpi_cpu_c1() function into x86/cpu_machdep.c and use
it instead of inlining "sti; hlt" sequence in several places.

In the acpi(4) man page, besides documenting the dev.cpu.N.cx_methods
sysctl, correct the names for dev.cpu.N.{cx_usage,cx_lowest,cx_supported}
sysctls.

Both jkim and avg have some other patches implementing the mwait
functionality; this work is unrelated.  Linux does not rely on the
ACPI to provide correct tables describing Cx modes.  Instead, the
driver has pre-defined knowledge of the CPU models, it was supplied by
Intel.

Tested by:    pho (previous versions)
Sponsored by:	The FreeBSD Foundation
2015-05-09 12:28:48 +00:00

510 lines
17 KiB
C
Raw Blame History

/*-
* Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
* Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
* 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.
*
* $FreeBSD$
*/
#ifndef _ACPIVAR_H_
#define _ACPIVAR_H_
#ifdef _KERNEL
#include "acpi_if.h"
#include "bus_if.h"
#include <sys/eventhandler.h>
#include <sys/ktr.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/selinfo.h>
#include <sys/sx.h>
#include <sys/sysctl.h>
#include <machine/bus.h>
#include <machine/resource.h>
struct apm_clone_data;
struct acpi_softc {
device_t acpi_dev;
struct cdev *acpi_dev_t;
int acpi_enabled;
int acpi_sstate;
int acpi_sleep_disabled;
int acpi_resources_reserved;
struct sysctl_ctx_list acpi_sysctl_ctx;
struct sysctl_oid *acpi_sysctl_tree;
int acpi_power_button_sx;
int acpi_sleep_button_sx;
int acpi_lid_switch_sx;
int acpi_standby_sx;
int acpi_suspend_sx;
int acpi_sleep_delay;
int acpi_s4bios;
int acpi_do_disable;
int acpi_verbose;
int acpi_handle_reboot;
vm_offset_t acpi_wakeaddr;
vm_paddr_t acpi_wakephys;
int acpi_next_sstate; /* Next suspend Sx state. */
struct apm_clone_data *acpi_clone; /* Pseudo-dev for devd(8). */
STAILQ_HEAD(,apm_clone_data) apm_cdevs; /* All apm/apmctl/acpi cdevs. */
struct callout susp_force_to; /* Force suspend if no acks. */
};
struct acpi_device {
/* ACPI ivars */
ACPI_HANDLE ad_handle;
void *ad_private;
int ad_flags;
/* Resources */
struct resource_list ad_rl;
};
/* Track device (/dev/{apm,apmctl} and /dev/acpi) notification status. */
struct apm_clone_data {
STAILQ_ENTRY(apm_clone_data) entries;
struct cdev *cdev;
int flags;
#define ACPI_EVF_NONE 0 /* /dev/apm semantics */
#define ACPI_EVF_DEVD 1 /* /dev/acpi is handled via devd(8) */
#define ACPI_EVF_WRITE 2 /* Device instance is opened writable. */
int notify_status;
#define APM_EV_NONE 0 /* Device not yet aware of pending sleep. */
#define APM_EV_NOTIFIED 1 /* Device saw next sleep state. */
#define APM_EV_ACKED 2 /* Device agreed sleep can occur. */
struct acpi_softc *acpi_sc;
struct selinfo sel_read;
};
#define ACPI_PRW_MAX_POWERRES 8
struct acpi_prw_data {
ACPI_HANDLE gpe_handle;
int gpe_bit;
int lowest_wake;
ACPI_OBJECT power_res[ACPI_PRW_MAX_POWERRES];
int power_res_count;
};
/* Flags for each device defined in the AML namespace. */
#define ACPI_FLAG_WAKE_ENABLED 0x1
/* Macros for extracting parts of a PCI address from an _ADR value. */
#define ACPI_ADR_PCI_SLOT(adr) (((adr) & 0xffff0000) >> 16)
#define ACPI_ADR_PCI_FUNC(adr) ((adr) & 0xffff)
/*
* Entry points to ACPI from above are global functions defined in this
* file, sysctls, and I/O on the control device. Entry points from below
* are interrupts (the SCI), notifies, task queue threads, and the thermal
* zone polling thread.
*
* ACPI tables and global shared data are protected by a global lock
* (acpi_mutex).
*
* Each ACPI device can have its own driver-specific mutex for protecting
* shared access to local data. The ACPI_LOCK macros handle mutexes.
*
* Drivers that need to serialize access to functions (e.g., to route
* interrupts, get/set control paths, etc.) should use the sx lock macros
* (ACPI_SERIAL).
*
* ACPI-CA handles its own locking and should not be called with locks held.
*
* The most complicated path is:
* GPE -> EC runs _Qxx -> _Qxx reads EC space -> GPE
*/
extern struct mtx acpi_mutex;
#define ACPI_LOCK(sys) mtx_lock(&sys##_mutex)
#define ACPI_UNLOCK(sys) mtx_unlock(&sys##_mutex)
#define ACPI_LOCK_ASSERT(sys) mtx_assert(&sys##_mutex, MA_OWNED);
#define ACPI_LOCK_DECL(sys, name) \
static struct mtx sys##_mutex; \
MTX_SYSINIT(sys##_mutex, &sys##_mutex, name, MTX_DEF)
#define ACPI_SERIAL_BEGIN(sys) sx_xlock(&sys##_sxlock)
#define ACPI_SERIAL_END(sys) sx_xunlock(&sys##_sxlock)
#define ACPI_SERIAL_ASSERT(sys) sx_assert(&sys##_sxlock, SX_XLOCKED);
#define ACPI_SERIAL_DECL(sys, name) \
static struct sx sys##_sxlock; \
SX_SYSINIT(sys##_sxlock, &sys##_sxlock, name)
/*
* ACPI CA does not define layers for non-ACPI CA drivers.
* We define some here within the range provided.
*/
#define ACPI_AC_ADAPTER 0x00010000
#define ACPI_BATTERY 0x00020000
#define ACPI_BUS 0x00040000
#define ACPI_BUTTON 0x00080000
#define ACPI_EC 0x00100000
#define ACPI_FAN 0x00200000
#define ACPI_POWERRES 0x00400000
#define ACPI_PROCESSOR 0x00800000
#define ACPI_THERMAL 0x01000000
#define ACPI_TIMER 0x02000000
#define ACPI_OEM 0x04000000
/*
* Constants for different interrupt models used with acpi_SetIntrModel().
*/
#define ACPI_INTR_PIC 0
#define ACPI_INTR_APIC 1
#define ACPI_INTR_SAPIC 2
/*
* Various features and capabilities for the acpi_get_features() method.
* In particular, these are used for the ACPI 3.0 _PDC and _OSC methods.
* See the Intel document titled "Intel Processor Vendor-Specific ACPI",
* number 302223-007.
*/
#define ACPI_CAP_PERF_MSRS (1 << 0) /* Intel SpeedStep PERF_CTL MSRs */
#define ACPI_CAP_C1_IO_HALT (1 << 1) /* Intel C1 "IO then halt" sequence */
#define ACPI_CAP_THR_MSRS (1 << 2) /* Intel OnDemand throttling MSRs */
#define ACPI_CAP_SMP_SAME (1 << 3) /* MP C1, Px, and Tx (all the same) */
#define ACPI_CAP_SMP_SAME_C3 (1 << 4) /* MP C2 and C3 (all the same) */
#define ACPI_CAP_SMP_DIFF_PX (1 << 5) /* MP Px (different, using _PSD) */
#define ACPI_CAP_SMP_DIFF_CX (1 << 6) /* MP Cx (different, using _CSD) */
#define ACPI_CAP_SMP_DIFF_TX (1 << 7) /* MP Tx (different, using _TSD) */
#define ACPI_CAP_SMP_C1_NATIVE (1 << 8) /* MP C1 support other than halt */
#define ACPI_CAP_SMP_C3_NATIVE (1 << 9) /* MP C2 and C3 support */
#define ACPI_CAP_PX_HW_COORD (1 << 11) /* Intel P-state HW coordination */
#define ACPI_CAP_INTR_CPPC (1 << 12) /* Native Interrupt Handling for
Collaborative Processor Performance Control notifications */
#define ACPI_CAP_HW_DUTY_C (1 << 13) /* Hardware Duty Cycling */
/*
* Quirk flags.
*
* ACPI_Q_BROKEN: Disables all ACPI support.
* ACPI_Q_TIMER: Disables support for the ACPI timer.
* ACPI_Q_MADT_IRQ0: Specifies that ISA IRQ 0 is wired up to pin 0 of the
* first APIC and that the MADT should force that by ignoring the PC-AT
* compatible flag and ignoring overrides that redirect IRQ 0 to pin 2.
*/
extern int acpi_quirks;
#define ACPI_Q_OK 0
#define ACPI_Q_BROKEN (1 << 0)
#define ACPI_Q_TIMER (1 << 1)
#define ACPI_Q_MADT_IRQ0 (1 << 2)
/*
* Note that the low ivar values are reserved to provide
* interface compatibility with ISA drivers which can also
* attach to ACPI.
*/
#define ACPI_IVAR_HANDLE 0x100
#define ACPI_IVAR_UNUSED 0x101 /* Unused/reserved. */
#define ACPI_IVAR_PRIVATE 0x102
#define ACPI_IVAR_FLAGS 0x103
/*
* Accessor functions for our ivars. Default value for BUS_READ_IVAR is
* (type) 0. The <sys/bus.h> accessor functions don't check return values.
*/
#define __ACPI_BUS_ACCESSOR(varp, var, ivarp, ivar, type) \
\
static __inline type varp ## _get_ ## var(device_t dev) \
{ \
uintptr_t v = 0; \
BUS_READ_IVAR(device_get_parent(dev), dev, \
ivarp ## _IVAR_ ## ivar, &v); \
return ((type) v); \
} \
\
static __inline void varp ## _set_ ## var(device_t dev, type t) \
{ \
uintptr_t v = (uintptr_t) t; \
BUS_WRITE_IVAR(device_get_parent(dev), dev, \
ivarp ## _IVAR_ ## ivar, v); \
}
__ACPI_BUS_ACCESSOR(acpi, handle, ACPI, HANDLE, ACPI_HANDLE)
__ACPI_BUS_ACCESSOR(acpi, private, ACPI, PRIVATE, void *)
__ACPI_BUS_ACCESSOR(acpi, flags, ACPI, FLAGS, int)
void acpi_fake_objhandler(ACPI_HANDLE h, void *data);
static __inline device_t
acpi_get_device(ACPI_HANDLE handle)
{
void *dev = NULL;
AcpiGetData(handle, acpi_fake_objhandler, &dev);
return ((device_t)dev);
}
static __inline ACPI_OBJECT_TYPE
acpi_get_type(device_t dev)
{
ACPI_HANDLE h;
ACPI_OBJECT_TYPE t;
if ((h = acpi_get_handle(dev)) == NULL)
return (ACPI_TYPE_NOT_FOUND);
if (ACPI_FAILURE(AcpiGetType(h, &t)))
return (ACPI_TYPE_NOT_FOUND);
return (t);
}
/* Find the difference between two PM tick counts. */
static __inline uint32_t
acpi_TimerDelta(uint32_t end, uint32_t start)
{
if (end < start && (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) == 0)
end |= 0x01000000;
return (end - start);
}
#ifdef ACPI_DEBUGGER
void acpi_EnterDebugger(void);
#endif
#ifdef ACPI_DEBUG
#include <sys/cons.h>
#define STEP(x) do {printf x, printf("\n"); cngetc();} while (0)
#else
#define STEP(x)
#endif
#define ACPI_VPRINT(dev, acpi_sc, x...) do { \
if (acpi_get_verbose(acpi_sc)) \
device_printf(dev, x); \
} while (0)
/* Values for the device _STA (status) method. */
#define ACPI_STA_PRESENT (1 << 0)
#define ACPI_STA_ENABLED (1 << 1)
#define ACPI_STA_SHOW_IN_UI (1 << 2)
#define ACPI_STA_FUNCTIONAL (1 << 3)
#define ACPI_STA_BATT_PRESENT (1 << 4)
#define ACPI_DEVINFO_PRESENT(x, flags) \
(((x) & (flags)) == (flags))
#define ACPI_DEVICE_PRESENT(x) \
ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL)
#define ACPI_BATTERY_PRESENT(x) \
ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL | \
ACPI_STA_BATT_PRESENT)
/* Callback function type for walking subtables within a table. */
typedef void acpi_subtable_handler(ACPI_SUBTABLE_HEADER *, void *);
BOOLEAN acpi_DeviceIsPresent(device_t dev);
BOOLEAN acpi_BatteryIsPresent(device_t dev);
ACPI_STATUS acpi_GetHandleInScope(ACPI_HANDLE parent, char *path,
ACPI_HANDLE *result);
ACPI_BUFFER *acpi_AllocBuffer(int size);
ACPI_STATUS acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp,
UINT32 *number);
ACPI_STATUS acpi_GetInteger(ACPI_HANDLE handle, char *path,
UINT32 *number);
ACPI_STATUS acpi_SetInteger(ACPI_HANDLE handle, char *path,
UINT32 number);
ACPI_STATUS acpi_ForeachPackageObject(ACPI_OBJECT *obj,
void (*func)(ACPI_OBJECT *comp, void *arg), void *arg);
ACPI_STATUS acpi_FindIndexedResource(ACPI_BUFFER *buf, int index,
ACPI_RESOURCE **resp);
ACPI_STATUS acpi_AppendBufferResource(ACPI_BUFFER *buf,
ACPI_RESOURCE *res);
ACPI_STATUS acpi_OverrideInterruptLevel(UINT32 InterruptNumber);
ACPI_STATUS acpi_SetIntrModel(int model);
int acpi_ReqSleepState(struct acpi_softc *sc, int state);
int acpi_AckSleepState(struct apm_clone_data *clone, int error);
ACPI_STATUS acpi_SetSleepState(struct acpi_softc *sc, int state);
int acpi_wake_set_enable(device_t dev, int enable);
int acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
ACPI_STATUS acpi_Startup(void);
void acpi_UserNotify(const char *subsystem, ACPI_HANDLE h,
uint8_t notify);
int acpi_bus_alloc_gas(device_t dev, int *type, int *rid,
ACPI_GENERIC_ADDRESS *gas, struct resource **res,
u_int flags);
void acpi_walk_subtables(void *first, void *end,
acpi_subtable_handler *handler, void *arg);
BOOLEAN acpi_MatchHid(ACPI_HANDLE h, const char *hid);
struct acpi_parse_resource_set {
void (*set_init)(device_t dev, void *arg, void **context);
void (*set_done)(device_t dev, void *context);
void (*set_ioport)(device_t dev, void *context, uint64_t base,
uint64_t length);
void (*set_iorange)(device_t dev, void *context, uint64_t low,
uint64_t high, uint64_t length, uint64_t align);
void (*set_memory)(device_t dev, void *context, uint64_t base,
uint64_t length);
void (*set_memoryrange)(device_t dev, void *context, uint64_t low,
uint64_t high, uint64_t length, uint64_t align);
void (*set_irq)(device_t dev, void *context, uint8_t *irq,
int count, int trig, int pol);
void (*set_ext_irq)(device_t dev, void *context, uint32_t *irq,
int count, int trig, int pol);
void (*set_drq)(device_t dev, void *context, uint8_t *drq,
int count);
void (*set_start_dependent)(device_t dev, void *context,
int preference);
void (*set_end_dependent)(device_t dev, void *context);
};
extern struct acpi_parse_resource_set acpi_res_parse_set;
int acpi_identify(void);
void acpi_config_intr(device_t dev, ACPI_RESOURCE *res);
ACPI_STATUS acpi_lookup_irq_resource(device_t dev, int rid,
struct resource *res, ACPI_RESOURCE *acpi_res);
ACPI_STATUS acpi_parse_resources(device_t dev, ACPI_HANDLE handle,
struct acpi_parse_resource_set *set, void *arg);
struct resource *acpi_alloc_sysres(device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags);
/* ACPI event handling */
UINT32 acpi_event_power_button_sleep(void *context);
UINT32 acpi_event_power_button_wake(void *context);
UINT32 acpi_event_sleep_button_sleep(void *context);
UINT32 acpi_event_sleep_button_wake(void *context);
#define ACPI_EVENT_PRI_FIRST 0
#define ACPI_EVENT_PRI_DEFAULT 10000
#define ACPI_EVENT_PRI_LAST 20000
typedef void (*acpi_event_handler_t)(void *, int);
EVENTHANDLER_DECLARE(acpi_sleep_event, acpi_event_handler_t);
EVENTHANDLER_DECLARE(acpi_wakeup_event, acpi_event_handler_t);
/* Device power control. */
ACPI_STATUS acpi_pwr_wake_enable(ACPI_HANDLE consumer, int enable);
ACPI_STATUS acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state);
int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
int *dstate);
/* APM emulation */
void acpi_apm_init(struct acpi_softc *);
/* Misc. */
static __inline struct acpi_softc *
acpi_device_get_parent_softc(device_t child)
{
device_t parent;
parent = device_get_parent(child);
if (parent == NULL)
return (NULL);
return (device_get_softc(parent));
}
static __inline int
acpi_get_verbose(struct acpi_softc *sc)
{
if (sc)
return (sc->acpi_verbose);
return (0);
}
char *acpi_name(ACPI_HANDLE handle);
int acpi_avoid(ACPI_HANDLE handle);
int acpi_disabled(char *subsys);
int acpi_machdep_init(device_t dev);
void acpi_install_wakeup_handler(struct acpi_softc *sc);
int acpi_sleep_machdep(struct acpi_softc *sc, int state);
int acpi_wakeup_machdep(struct acpi_softc *sc, int state,
int sleep_result, int intr_enabled);
int acpi_table_quirks(int *quirks);
int acpi_machdep_quirks(int *quirks);
/* Battery Abstraction. */
struct acpi_battinfo;
int acpi_battery_register(device_t dev);
int acpi_battery_remove(device_t dev);
int acpi_battery_get_units(void);
int acpi_battery_get_info_expire(void);
int acpi_battery_bst_valid(struct acpi_bst *bst);
int acpi_battery_bif_valid(struct acpi_bif *bif);
int acpi_battery_get_battinfo(device_t dev,
struct acpi_battinfo *info);
/* Embedded controller. */
void acpi_ec_ecdt_probe(device_t);
/* AC adapter interface. */
int acpi_acad_get_acline(int *);
/* Package manipulation convenience functions. */
#define ACPI_PKG_VALID(pkg, size) \
((pkg) != NULL && (pkg)->Type == ACPI_TYPE_PACKAGE && \
(pkg)->Package.Count >= (size))
int acpi_PkgInt(ACPI_OBJECT *res, int idx, UINT64 *dst);
int acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst);
int acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size);
int acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type,
int *rid, struct resource **dst, u_int flags);
int acpi_PkgFFH_IntelCpu(ACPI_OBJECT *res, int idx, int *vendor,
int *class, uint64_t *address, int *accsize);
ACPI_HANDLE acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj);
/*
* Base level for BUS_ADD_CHILD. Special devices are added at orders less
* than this, and normal devices at or above this level. This keeps the
* probe order sorted so that things like sysresource are available before
* their children need them.
*/
#define ACPI_DEV_BASE_ORDER 100
/* Default maximum number of tasks to enqueue. */
#ifndef ACPI_MAX_TASKS
#define ACPI_MAX_TASKS MAX(32, MAXCPU * 4)
#endif
/* Default number of task queue threads to start. */
#ifndef ACPI_MAX_THREADS
#define ACPI_MAX_THREADS 3
#endif
/* Use the device logging level for ktr(4). */
#define KTR_ACPI KTR_DEV
SYSCTL_DECL(_debug_acpi);
/*
* Map a PXM to a VM domain.
*
* Returns the VM domain ID if found, or -1 if not found / invalid.
*/
#if MAXMEMDOM > 1
extern int acpi_map_pxm_to_vm_domainid(int pxm);
#endif
extern int acpi_get_domain(device_t dev, device_t child, int *domain);
extern int acpi_parse_pxm(device_t dev, int *domain);
#endif /* _KERNEL */
#endif /* !_ACPIVAR_H_ */
Reference in New Issue View Git Blame Copy Permalink