The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/acpica/acpivar.h

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    1 /*-
    2  * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
    3  * Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
    4  * Copyright (c) 2000 BSDi
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: releng/6.0/sys/dev/acpica/acpivar.h 148530 2005-07-29 16:27:07Z njl $
   29  */
   30 
   31 #ifndef _ACPIVAR_H_
   32 #define _ACPIVAR_H_
   33 
   34 #ifdef _KERNEL
   35 
   36 #include "acpi_if.h"
   37 #include "bus_if.h"
   38 #include <sys/eventhandler.h>
   39 #include <sys/sysctl.h>
   40 #include <sys/lock.h>
   41 #include <sys/mutex.h>
   42 #include <sys/sx.h>
   43 
   44 #include <machine/bus.h>
   45 #include <machine/resource.h>
   46 
   47 struct acpi_softc {
   48     device_t            acpi_dev;
   49     struct cdev *acpi_dev_t;
   50 
   51     struct resource     *acpi_irq;
   52     int                 acpi_irq_rid;
   53     void                *acpi_irq_handle;
   54 
   55     int                 acpi_enabled;
   56     int                 acpi_sstate;
   57     int                 acpi_sleep_disabled;
   58 
   59     struct sysctl_ctx_list acpi_sysctl_ctx;
   60     struct sysctl_oid   *acpi_sysctl_tree;
   61     int                 acpi_power_button_sx;
   62     int                 acpi_sleep_button_sx;
   63     int                 acpi_lid_switch_sx;
   64 
   65     int                 acpi_standby_sx;
   66     int                 acpi_suspend_sx;
   67 
   68     int                 acpi_sleep_delay;
   69     int                 acpi_s4bios;
   70     int                 acpi_disable_on_poweroff;
   71     int                 acpi_verbose;
   72 
   73     bus_dma_tag_t       acpi_waketag;
   74     bus_dmamap_t        acpi_wakemap;
   75     vm_offset_t         acpi_wakeaddr;
   76     vm_paddr_t          acpi_wakephys;
   77 };
   78 
   79 struct acpi_device {
   80     /* ACPI ivars */
   81     ACPI_HANDLE                 ad_handle;
   82     int                         ad_magic;
   83     void                        *ad_private;
   84     int                         ad_flags;
   85 
   86     /* Resources */
   87     struct resource_list        ad_rl;
   88 };
   89 
   90 #define ACPI_PRW_MAX_POWERRES   8
   91 
   92 struct acpi_prw_data {
   93     ACPI_HANDLE         gpe_handle;
   94     int                 gpe_bit;
   95     int                 lowest_wake;
   96     ACPI_OBJECT         power_res[ACPI_PRW_MAX_POWERRES];
   97     int                 power_res_count;
   98 };
   99 
  100 /* Flags for each device defined in the AML namespace. */
  101 #define ACPI_FLAG_WAKE_ENABLED  0x1
  102 
  103 /* Macros for extracting parts of a PCI address from an _ADR value. */
  104 #define ACPI_ADR_PCI_SLOT(adr)  (((adr) & 0xffff0000) >> 16)
  105 #define ACPI_ADR_PCI_FUNC(adr)  ((adr) & 0xffff)
  106 
  107 /*
  108  * Entry points to ACPI from above are global functions defined in this
  109  * file, sysctls, and I/O on the control device.  Entry points from below
  110  * are interrupts (the SCI), notifies, task queue threads, and the thermal
  111  * zone polling thread.
  112  *
  113  * ACPI tables and global shared data are protected by a global lock
  114  * (acpi_mutex).  
  115  *
  116  * Each ACPI device can have its own driver-specific mutex for protecting
  117  * shared access to local data.  The ACPI_LOCK macros handle mutexes.
  118  *
  119  * Drivers that need to serialize access to functions (e.g., to route
  120  * interrupts, get/set control paths, etc.) should use the sx lock macros
  121  * (ACPI_SERIAL).
  122  *
  123  * ACPI-CA handles its own locking and should not be called with locks held.
  124  *
  125  * The most complicated path is:
  126  *     GPE -> EC runs _Qxx -> _Qxx reads EC space -> GPE
  127  */
  128 extern struct mtx                       acpi_mutex;
  129 #define ACPI_LOCK(sys)                  mtx_lock(&sys##_mutex)
  130 #define ACPI_UNLOCK(sys)                mtx_unlock(&sys##_mutex)
  131 #define ACPI_LOCK_ASSERT(sys)           mtx_assert(&sys##_mutex, MA_OWNED);
  132 #define ACPI_LOCK_DECL(sys, name)                               \
  133         static struct mtx sys##_mutex;                          \
  134         MTX_SYSINIT(sys##_mutex, &sys##_mutex, name, MTX_DEF)
  135 #define ACPI_SERIAL_BEGIN(sys)          sx_xlock(&sys##_sxlock)
  136 #define ACPI_SERIAL_END(sys)            sx_xunlock(&sys##_sxlock)
  137 #define ACPI_SERIAL_ASSERT(sys)         sx_assert(&sys##_sxlock, SX_XLOCKED);
  138 #define ACPI_SERIAL_DECL(sys, name)                             \
  139         static struct sx sys##_sxlock;                          \
  140         SX_SYSINIT(sys##_sxlock, &sys##_sxlock, name)
  141 
  142 /*
  143  * ACPI CA does not define layers for non-ACPI CA drivers.
  144  * We define some here within the range provided.
  145  */
  146 #define ACPI_AC_ADAPTER         0x00010000
  147 #define ACPI_BATTERY            0x00020000
  148 #define ACPI_BUS                0x00040000
  149 #define ACPI_BUTTON             0x00080000
  150 #define ACPI_EC                 0x00100000
  151 #define ACPI_FAN                0x00200000
  152 #define ACPI_POWERRES           0x00400000
  153 #define ACPI_PROCESSOR          0x00800000
  154 #define ACPI_THERMAL            0x01000000
  155 #define ACPI_TIMER              0x02000000
  156 #define ACPI_OEM                0x04000000
  157 
  158 /*
  159  * Constants for different interrupt models used with acpi_SetIntrModel().
  160  */
  161 #define ACPI_INTR_PIC           0
  162 #define ACPI_INTR_APIC          1
  163 #define ACPI_INTR_SAPIC         2
  164 
  165 /*
  166  * Various features and capabilities for the acpi_get_features() method.
  167  * In particular, these are used for the ACPI 3.0 _PDC and _OSC methods.
  168  * See the Intel document titled "Processor Driver Capabilities Bit
  169  * Definitions", number 302223-002.
  170  */
  171 #define ACPI_CAP_PERF_MSRS      (1 << 0) /* Intel SpeedStep PERF_CTL MSRs */
  172 #define ACPI_CAP_C1_IO_HALT     (1 << 1) /* Intel C1 "IO then halt" sequence */
  173 #define ACPI_CAP_THR_MSRS       (1 << 2) /* Intel OnDemand throttling MSRs */
  174 #define ACPI_CAP_SMP_SAME       (1 << 3) /* MP C1, Px, and Tx (all the same) */
  175 #define ACPI_CAP_SMP_SAME_C3    (1 << 4) /* MP C2 and C3 (all the same) */
  176 #define ACPI_CAP_SMP_DIFF_PX    (1 << 5) /* MP Px (different, using _PSD) */
  177 #define ACPI_CAP_SMP_DIFF_CX    (1 << 6) /* MP Cx (different, using _CSD) */
  178 #define ACPI_CAP_SMP_DIFF_TX    (1 << 7) /* MP Tx (different, using _TSD) */
  179 #define ACPI_CAP_SMP_C1_NATIVE  (1 << 8) /* MP C1 support other than halt */
  180 
  181 /*
  182  * Quirk flags.
  183  *
  184  * ACPI_Q_BROKEN: Disables all ACPI support.
  185  * ACPI_Q_TIMER: Disables support for the ACPI timer.
  186  * ACPI_Q_MADT_IRQ0: Specifies that ISA IRQ 0 is wired up to pin 0 of the
  187  *      first APIC and that the MADT should force that by ignoring the PC-AT
  188  *      compatible flag and ignoring overrides that redirect IRQ 0 to pin 2.
  189  */
  190 extern int      acpi_quirks;
  191 #define ACPI_Q_OK               0
  192 #define ACPI_Q_BROKEN           (1 << 0)
  193 #define ACPI_Q_TIMER            (1 << 1)
  194 #define ACPI_Q_MADT_IRQ0        (1 << 2)
  195 
  196 /*
  197  * Note that the low ivar values are reserved to provide
  198  * interface compatibility with ISA drivers which can also
  199  * attach to ACPI.
  200  */
  201 #define ACPI_IVAR_HANDLE        0x100
  202 #define ACPI_IVAR_MAGIC         0x101
  203 #define ACPI_IVAR_PRIVATE       0x102
  204 #define ACPI_IVAR_FLAGS         0x103
  205 
  206 /*
  207  * Accessor functions for our ivars.  Default value for BUS_READ_IVAR is
  208  * (type) 0.  The <sys/bus.h> accessor functions don't check return values.
  209  */
  210 #define __ACPI_BUS_ACCESSOR(varp, var, ivarp, ivar, type)       \
  211                                                                 \
  212 static __inline type varp ## _get_ ## var(device_t dev)         \
  213 {                                                               \
  214     uintptr_t v = 0;                                            \
  215     BUS_READ_IVAR(device_get_parent(dev), dev,                  \
  216         ivarp ## _IVAR_ ## ivar, &v);                           \
  217     return ((type) v);                                          \
  218 }                                                               \
  219                                                                 \
  220 static __inline void varp ## _set_ ## var(device_t dev, type t) \
  221 {                                                               \
  222     uintptr_t v = (uintptr_t) t;                                \
  223     BUS_WRITE_IVAR(device_get_parent(dev), dev,                 \
  224         ivarp ## _IVAR_ ## ivar, v);                            \
  225 }
  226 
  227 __ACPI_BUS_ACCESSOR(acpi, handle, ACPI, HANDLE, ACPI_HANDLE)
  228 __ACPI_BUS_ACCESSOR(acpi, magic, ACPI, MAGIC, int)
  229 __ACPI_BUS_ACCESSOR(acpi, private, ACPI, PRIVATE, void *)
  230 __ACPI_BUS_ACCESSOR(acpi, flags, ACPI, FLAGS, int)
  231 
  232 void acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data);
  233 static __inline device_t
  234 acpi_get_device(ACPI_HANDLE handle)
  235 {
  236     void *dev = NULL;
  237     AcpiGetData(handle, acpi_fake_objhandler, &dev);
  238     return ((device_t)dev);
  239 }
  240 
  241 static __inline ACPI_OBJECT_TYPE
  242 acpi_get_type(device_t dev)
  243 {
  244     ACPI_HANDLE         h;
  245     ACPI_OBJECT_TYPE    t;
  246 
  247     if ((h = acpi_get_handle(dev)) == NULL)
  248         return (ACPI_TYPE_NOT_FOUND);
  249     if (AcpiGetType(h, &t) != AE_OK)
  250         return (ACPI_TYPE_NOT_FOUND);
  251     return (t);
  252 }
  253 
  254 #ifdef ACPI_DEBUGGER
  255 void            acpi_EnterDebugger(void);
  256 #endif
  257 
  258 #ifdef ACPI_DEBUG
  259 #include <sys/cons.h>
  260 #define STEP(x)         do {printf x, printf("\n"); cngetc();} while (0)
  261 #else
  262 #define STEP(x)
  263 #endif
  264 
  265 #define ACPI_VPRINT(dev, acpi_sc, x...) do {                    \
  266     if (acpi_get_verbose(acpi_sc))                              \
  267         device_printf(dev, x);                                  \
  268 } while (0)
  269 
  270 /* Values for the device _STA (status) method. */
  271 #define ACPI_STA_PRESENT        (1 << 0)
  272 #define ACPI_STA_ENABLED        (1 << 1)
  273 #define ACPI_STA_SHOW_IN_UI     (1 << 2)
  274 #define ACPI_STA_FUNCTIONAL     (1 << 3)
  275 #define ACPI_STA_BATT_PRESENT   (1 << 4)
  276 
  277 #define ACPI_DEVINFO_PRESENT(x, flags)                                  \
  278         (((x) & (flags)) == (flags))
  279 #define ACPI_DEVICE_PRESENT(x)                                          \
  280         ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL)
  281 #define ACPI_BATTERY_PRESENT(x)                                         \
  282         ACPI_DEVINFO_PRESENT(x, ACPI_STA_PRESENT | ACPI_STA_FUNCTIONAL | \
  283             ACPI_STA_BATT_PRESENT)
  284 
  285 BOOLEAN         acpi_DeviceIsPresent(device_t dev);
  286 BOOLEAN         acpi_BatteryIsPresent(device_t dev);
  287 ACPI_STATUS     acpi_GetHandleInScope(ACPI_HANDLE parent, char *path,
  288                     ACPI_HANDLE *result);
  289 uint32_t        acpi_TimerDelta(uint32_t end, uint32_t start);
  290 ACPI_BUFFER     *acpi_AllocBuffer(int size);
  291 ACPI_STATUS     acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp,
  292                     UINT32 *number);
  293 ACPI_STATUS     acpi_GetInteger(ACPI_HANDLE handle, char *path,
  294                     UINT32 *number);
  295 ACPI_STATUS     acpi_SetInteger(ACPI_HANDLE handle, char *path,
  296                     UINT32 number);
  297 ACPI_STATUS     acpi_ForeachPackageObject(ACPI_OBJECT *obj, 
  298                     void (*func)(ACPI_OBJECT *comp, void *arg), void *arg);
  299 ACPI_STATUS     acpi_FindIndexedResource(ACPI_BUFFER *buf, int index,
  300                     ACPI_RESOURCE **resp);
  301 ACPI_STATUS     acpi_AppendBufferResource(ACPI_BUFFER *buf,
  302                     ACPI_RESOURCE *res);
  303 ACPI_STATUS     acpi_OverrideInterruptLevel(UINT32 InterruptNumber);
  304 ACPI_STATUS     acpi_SetIntrModel(int model);
  305 ACPI_STATUS     acpi_SetSleepState(struct acpi_softc *sc, int state);
  306 int             acpi_wake_init(device_t dev, int type);
  307 int             acpi_wake_set_enable(device_t dev, int enable);
  308 int             acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
  309 ACPI_STATUS     acpi_Startup(void);
  310 void            acpi_UserNotify(const char *subsystem, ACPI_HANDLE h,
  311                     uint8_t notify);
  312 int             acpi_bus_alloc_gas(device_t dev, int *type, int *rid,
  313                     ACPI_GENERIC_ADDRESS *gas, struct resource **res);
  314 
  315 struct acpi_parse_resource_set {
  316     void        (*set_init)(device_t dev, void *arg, void **context);
  317     void        (*set_done)(device_t dev, void *context);
  318     void        (*set_ioport)(device_t dev, void *context, uint32_t base,
  319                     uint32_t length);
  320     void        (*set_iorange)(device_t dev, void *context, uint32_t low,
  321                     uint32_t high, uint32_t length, uint32_t align);
  322     void        (*set_memory)(device_t dev, void *context, uint32_t base,
  323                     uint32_t length);
  324     void        (*set_memoryrange)(device_t dev, void *context, uint32_t low,
  325                     uint32_t high, uint32_t length, uint32_t align);
  326     void        (*set_irq)(device_t dev, void *context, u_int32_t *irq,
  327                     int count, int trig, int pol);
  328     void        (*set_drq)(device_t dev, void *context, u_int32_t *drq,
  329                     int count);
  330     void        (*set_start_dependant)(device_t dev, void *context,
  331                     int preference);
  332     void        (*set_end_dependant)(device_t dev, void *context);
  333 };
  334 
  335 extern struct   acpi_parse_resource_set acpi_res_parse_set;
  336 
  337 void            acpi_config_intr(device_t dev, ACPI_RESOURCE *res);
  338 ACPI_STATUS     acpi_lookup_irq_resource(device_t dev, int rid,
  339                     struct resource *res, ACPI_RESOURCE *acpi_res);
  340 ACPI_STATUS     acpi_parse_resources(device_t dev, ACPI_HANDLE handle,
  341                     struct acpi_parse_resource_set *set, void *arg);
  342 
  343 /* ACPI event handling */
  344 UINT32          acpi_event_power_button_sleep(void *context);
  345 UINT32          acpi_event_power_button_wake(void *context);
  346 UINT32          acpi_event_sleep_button_sleep(void *context);
  347 UINT32          acpi_event_sleep_button_wake(void *context);
  348 
  349 #define ACPI_EVENT_PRI_FIRST      0
  350 #define ACPI_EVENT_PRI_DEFAULT    10000
  351 #define ACPI_EVENT_PRI_LAST       20000
  352 
  353 typedef void (*acpi_event_handler_t)(void *, int);
  354 
  355 EVENTHANDLER_DECLARE(acpi_sleep_event, acpi_event_handler_t);
  356 EVENTHANDLER_DECLARE(acpi_wakeup_event, acpi_event_handler_t);
  357 
  358 /* Device power control. */
  359 ACPI_STATUS     acpi_pwr_wake_enable(ACPI_HANDLE consumer, int enable);
  360 ACPI_STATUS     acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state);
  361 
  362 /* Misc. */
  363 static __inline struct acpi_softc *
  364 acpi_device_get_parent_softc(device_t child)
  365 {
  366     device_t    parent;
  367 
  368     parent = device_get_parent(child);
  369     if (parent == NULL)
  370         return (NULL);
  371     return (device_get_softc(parent));
  372 }
  373 
  374 static __inline int
  375 acpi_get_verbose(struct acpi_softc *sc)
  376 {
  377     if (sc)
  378         return (sc->acpi_verbose);
  379     return (0);
  380 }
  381 
  382 char            *acpi_name(ACPI_HANDLE handle);
  383 int             acpi_avoid(ACPI_HANDLE handle);
  384 int             acpi_disabled(char *subsys);
  385 int             acpi_machdep_init(device_t dev);
  386 void            acpi_install_wakeup_handler(struct acpi_softc *sc);
  387 int             acpi_sleep_machdep(struct acpi_softc *sc, int state);
  388 int             acpi_table_quirks(int *quirks);
  389 int             acpi_machdep_quirks(int *quirks);
  390 
  391 /* Battery Abstraction. */
  392 struct acpi_battinfo;
  393 
  394 int             acpi_battery_register(device_t dev);
  395 int             acpi_battery_remove(device_t dev);
  396 int             acpi_battery_get_units(void);
  397 int             acpi_battery_get_info_expire(void);
  398 int             acpi_battery_bst_valid(struct acpi_bst *bst);
  399 int             acpi_battery_bif_valid(struct acpi_bif *bif);
  400 int             acpi_battery_get_battinfo(device_t dev,
  401                     struct acpi_battinfo *info);
  402 
  403 /* Embedded controller. */
  404 void            acpi_ec_ecdt_probe(device_t);
  405 
  406 /* AC adapter interface. */
  407 int             acpi_acad_get_acline(int *);
  408 
  409 /* Package manipulation convenience functions. */
  410 #define ACPI_PKG_VALID(pkg, size)                               \
  411     ((pkg) != NULL && (pkg)->Type == ACPI_TYPE_PACKAGE &&       \
  412      (pkg)->Package.Count >= (size))
  413 int             acpi_PkgInt(ACPI_OBJECT *res, int idx, ACPI_INTEGER *dst);
  414 int             acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst);
  415 int             acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size);
  416 int             acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type,
  417                     int *rid, struct resource **dst);
  418 ACPI_HANDLE     acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj);
  419 
  420 /* Default number of task queue threads to start. */
  421 #define ACPI_MAX_THREADS        3
  422 
  423 #endif /* _KERNEL */
  424 #endif /* !_ACPIVAR_H_ */

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