text: /*
   * acpi.h - ACPI Interface
   *
   * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   *
   * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   *
   * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   */
  
  #ifndef _LINUX_ACPI_H
  #define _LINUX_ACPI_H
  
  #include <linux/errno.h>
  #include <linux/ioport.h>	/* for struct resource */
  #include <linux/device.h>
  
  #ifdef	CONFIG_ACPI
  
  #ifndef _LINUX
  #define _LINUX
  #endif
  
  #include <linux/list.h>
  #include <linux/mod_devicetable.h>
  #include <linux/dynamic_debug.h>
  
  #include <acpi/acpi.h>
  #include <acpi/acpi_bus.h>
  #include <acpi/acpi_drivers.h>
  #include <acpi/acpi_numa.h>
  #include <acpi/acpi_io.h>
  #include <asm/acpi.h>
  
  static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
  {
  	return adev ? adev->handle : NULL;
  }
  
  #define ACPI_COMPANION(dev)		((dev)->acpi_node.companion)
  #define ACPI_COMPANION_SET(dev, adev)	ACPI_COMPANION(dev) = (adev)
  #define ACPI_HANDLE(dev)		acpi_device_handle(ACPI_COMPANION(dev))
  
  static inline void acpi_preset_companion(struct device *dev,
  					 struct acpi_device *parent, u64 addr)
  {
  	ACPI_COMPANION_SET(dev, acpi_find_child_device(parent, addr, NULL));
  }
  
  static inline const char *acpi_dev_name(struct acpi_device *adev)
  {
  	return dev_name(&adev->dev);
  }
  
  enum acpi_irq_model_id {
  	ACPI_IRQ_MODEL_PIC = 0,
  	ACPI_IRQ_MODEL_IOAPIC,
  	ACPI_IRQ_MODEL_IOSAPIC,
  	ACPI_IRQ_MODEL_PLATFORM,
  	ACPI_IRQ_MODEL_COUNT
  };
  
  extern enum acpi_irq_model_id	acpi_irq_model;
  
  enum acpi_interrupt_id {
  	ACPI_INTERRUPT_PMI	= 1,
  	ACPI_INTERRUPT_INIT,
  	ACPI_INTERRUPT_CPEI,
  	ACPI_INTERRUPT_COUNT
  };
  
  #define	ACPI_SPACE_MEM		0
  
  enum acpi_address_range_id {
  	ACPI_ADDRESS_RANGE_MEMORY = 1,
  	ACPI_ADDRESS_RANGE_RESERVED = 2,
  	ACPI_ADDRESS_RANGE_ACPI = 3,
  	ACPI_ADDRESS_RANGE_NVS	= 4,
  	ACPI_ADDRESS_RANGE_COUNT
  };
  
  
  /* Table Handlers */
  
  typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);
  
  typedef int (*acpi_tbl_entry_handler)(struct acpi_subtable_header *header,
  				      const unsigned long end);
  
  #ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE
  void acpi_initrd_override(void *data, size_t size);
  #else
  static inline void acpi_initrd_override(void *data, size_t size)
  {
  }
  #endif
  
  #define BAD_MADT_ENTRY(entry, end) (					    \
  		(!entry) || (unsigned long)entry + sizeof(*entry) > end ||  \
  		((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
  
  char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
  void __acpi_unmap_table(char *map, unsigned long size);
  int early_acpi_boot_init(void);
  int acpi_boot_init (void);
  void acpi_boot_table_init (void);
  int acpi_mps_check (void);
  int acpi_numa_init (void);
  
  int acpi_table_init (void);
  int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
  int __init acpi_table_parse_entries(char *id, unsigned long table_size,
  				    int entry_id,
  				    acpi_tbl_entry_handler handler,
  				    unsigned int max_entries);
  int acpi_table_parse_madt(enum acpi_madt_type id,
  			  acpi_tbl_entry_handler handler,
  			  unsigned int max_entries);
  int acpi_parse_mcfg (struct acpi_table_header *header);
  void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
  
  /* the following four functions are architecture-dependent */
  void acpi_numa_slit_init (struct acpi_table_slit *slit);
  void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
  void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
  int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
  void acpi_numa_arch_fixup(void);
  
  #ifdef CONFIG_ACPI_HOTPLUG_CPU
  /* Arch dependent functions for cpu hotplug support */
  int acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu);
  int acpi_unmap_lsapic(int cpu);
  #endif /* CONFIG_ACPI_HOTPLUG_CPU */
  
  int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
  int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
  void acpi_irq_stats_init(void);
  extern u32 acpi_irq_handled;
  extern u32 acpi_irq_not_handled;
  
  extern int sbf_port;
  extern unsigned long acpi_realmode_flags;
  
  int acpi_register_gsi (struct device *dev, u32 gsi, int triggering, int polarity);
  int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
  int acpi_isa_irq_to_gsi (unsigned isa_irq, u32 *gsi);
  
  #ifdef CONFIG_X86_IO_APIC
  extern int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity);
  #else
  #define acpi_get_override_irq(gsi, trigger, polarity) (-1)
  #endif
  /*
   * This function undoes the effect of one call to acpi_register_gsi().
   * If this matches the last registration, any IRQ resources for gsi
   * are freed.
   */
  void acpi_unregister_gsi (u32 gsi);
  
  struct pci_dev;
  
  int acpi_pci_irq_enable (struct pci_dev *dev);
  void acpi_penalize_isa_irq(int irq, int active);
  
  void acpi_pci_irq_disable (struct pci_dev *dev);
  
  extern int ec_read(u8 addr, u8 *val);
  extern int ec_write(u8 addr, u8 val);
  extern int ec_transaction(u8 command,
                            const u8 *wdata, unsigned wdata_len,
                            u8 *rdata, unsigned rdata_len);
  extern acpi_handle ec_get_handle(void);
  
  extern bool acpi_is_pnp_device(struct acpi_device *);
  
  #if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
  
  typedef void (*wmi_notify_handler) (u32 value, void *context);
  
  extern acpi_status wmi_evaluate_method(const char *guid, u8 instance,
  					u32 method_id,
  					const struct acpi_buffer *in,
  					struct acpi_buffer *out);
  extern acpi_status wmi_query_block(const char *guid, u8 instance,
  					struct acpi_buffer *out);
  extern acpi_status wmi_set_block(const char *guid, u8 instance,
  					const struct acpi_buffer *in);
  extern acpi_status wmi_install_notify_handler(const char *guid,
  					wmi_notify_handler handler, void *data);
  extern acpi_status wmi_remove_notify_handler(const char *guid);
  extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
  extern bool wmi_has_guid(const char *guid);
  
  #endif	/* CONFIG_ACPI_WMI */
  
  #define ACPI_VIDEO_OUTPUT_SWITCHING			0x0001
  #define ACPI_VIDEO_DEVICE_POSTING			0x0002
  #define ACPI_VIDEO_ROM_AVAILABLE			0x0004
  #define ACPI_VIDEO_BACKLIGHT				0x0008
  #define ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR		0x0010
  #define ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO		0x0020
  #define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VENDOR	0x0040
  #define ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO		0x0080
  #define ACPI_VIDEO_BACKLIGHT_DMI_VENDOR			0x0100
  #define ACPI_VIDEO_BACKLIGHT_DMI_VIDEO			0x0200
  #define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VENDOR		0x0400
  #define ACPI_VIDEO_OUTPUT_SWITCHING_DMI_VIDEO		0x0800
  
  #if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
  
  extern long acpi_video_get_capabilities(acpi_handle graphics_dev_handle);
  extern long acpi_is_video_device(acpi_handle handle);
  extern void acpi_video_dmi_promote_vendor(void);
  extern void acpi_video_dmi_demote_vendor(void);
  extern int acpi_video_backlight_support(void);
  extern int acpi_video_display_switch_support(void);
  
  #else
  
  static inline long acpi_video_get_capabilities(acpi_handle graphics_dev_handle)
  {
  	return 0;
  }
  
  static inline long acpi_is_video_device(acpi_handle handle)
  {
  	return 0;
  }
  
  static inline void acpi_video_dmi_promote_vendor(void)
  {
  }
  
  static inline void acpi_video_dmi_demote_vendor(void)
  {
  }
  
  static inline int acpi_video_backlight_support(void)
  {
  	return 0;
  }
  
  static inline int acpi_video_display_switch_support(void)
  {
  	return 0;
  }
  
  #endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
  
  extern int acpi_blacklisted(void);
  extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
  extern void acpi_osi_setup(char *str);
  
  #ifdef CONFIG_ACPI_NUMA
  int acpi_get_node(acpi_handle handle);
  #else
  static inline int acpi_get_node(acpi_handle handle)
  {
  	return 0;
  }
  #endif
  extern int acpi_paddr_to_node(u64 start_addr, u64 size);
  
  extern int pnpacpi_disabled;
  
  #define PXM_INVAL	(-1)
  
  bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res);
  bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res);
  bool acpi_dev_resource_address_space(struct acpi_resource *ares,
  				     struct resource *res);
  bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
  					 struct resource *res);
  unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable);
  bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
  				 struct resource *res);
  
  struct resource_list_entry {
  	struct list_head node;
  	struct resource res;
  };
  
  void acpi_dev_free_resource_list(struct list_head *list);
  int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
  			   int (*preproc)(struct acpi_resource *, void *),
  			   void *preproc_data);
  
  int acpi_check_resource_conflict(const struct resource *res);
  
  int acpi_check_region(resource_size_t start, resource_size_t n,
  		      const char *name);
  
  int acpi_resources_are_enforced(void);
  
  #ifdef CONFIG_HIBERNATION
  void __init acpi_no_s4_hw_signature(void);
  #endif
  
  #ifdef CONFIG_PM_SLEEP
  void __init acpi_old_suspend_ordering(void);
  void __init acpi_nvs_nosave(void);
  void __init acpi_nvs_nosave_s3(void);
  #endif /* CONFIG_PM_SLEEP */
  
  struct acpi_osc_context {
  	char *uuid_str;			/* UUID string */
  	int rev;
  	struct acpi_buffer cap;		/* list of DWORD capabilities */
  	struct acpi_buffer ret;		/* free by caller if success */
  };
  
  acpi_status acpi_str_to_uuid(char *str, u8 *uuid);
  acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
  
  /* Indexes into _OSC Capabilities Buffer (DWORDs 2 & 3 are device-specific) */
  #define OSC_QUERY_DWORD				0	/* DWORD 1 */
  #define OSC_SUPPORT_DWORD			1	/* DWORD 2 */
  #define OSC_CONTROL_DWORD			2	/* DWORD 3 */
  
  /* _OSC Capabilities DWORD 1: Query/Control and Error Returns (generic) */
  #define OSC_QUERY_ENABLE			0x00000001  /* input */
  #define OSC_REQUEST_ERROR			0x00000002  /* return */
  #define OSC_INVALID_UUID_ERROR			0x00000004  /* return */
  #define OSC_INVALID_REVISION_ERROR		0x00000008  /* return */
  #define OSC_CAPABILITIES_MASK_ERROR		0x00000010  /* return */
  
  /* Platform-Wide Capabilities _OSC: Capabilities DWORD 2: Support Field */
  #define OSC_SB_PAD_SUPPORT			0x00000001
  #define OSC_SB_PPC_OST_SUPPORT			0x00000002
  #define OSC_SB_PR3_SUPPORT			0x00000004
  #define OSC_SB_HOTPLUG_OST_SUPPORT		0x00000008
  #define OSC_SB_APEI_SUPPORT			0x00000010
  #define OSC_SB_CPC_SUPPORT			0x00000020
  
  extern bool osc_sb_apei_support_acked;
  
  /* PCI Host Bridge _OSC: Capabilities DWORD 2: Support Field */
  #define OSC_PCI_EXT_CONFIG_SUPPORT		0x00000001
  #define OSC_PCI_ASPM_SUPPORT			0x00000002
  #define OSC_PCI_CLOCK_PM_SUPPORT		0x00000004
  #define OSC_PCI_SEGMENT_GROUPS_SUPPORT		0x00000008
  #define OSC_PCI_MSI_SUPPORT			0x00000010
  #define OSC_PCI_SUPPORT_MASKS			0x0000001f
  
  /* PCI Host Bridge _OSC: Capabilities DWORD 3: Control Field */
  #define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL	0x00000001
  #define OSC_PCI_SHPC_NATIVE_HP_CONTROL		0x00000002
  #define OSC_PCI_EXPRESS_PME_CONTROL		0x00000004
  #define OSC_PCI_EXPRESS_AER_CONTROL		0x00000008
  #define OSC_PCI_EXPRESS_CAPABILITY_CONTROL	0x00000010
  #define OSC_PCI_CONTROL_MASKS			0x0000001f
  
  extern acpi_status acpi_pci_osc_control_set(acpi_handle handle,
  					     u32 *mask, u32 req);
  
  /* Enable _OST when all relevant hotplug operations are enabled */
  #if defined(CONFIG_ACPI_HOTPLUG_CPU) &&			\
  	defined(CONFIG_ACPI_HOTPLUG_MEMORY) &&		\
  	defined(CONFIG_ACPI_CONTAINER)
  #define ACPI_HOTPLUG_OST
  #endif
  
  /* _OST Source Event Code (OSPM Action) */
  #define ACPI_OST_EC_OSPM_SHUTDOWN		0x100
  #define ACPI_OST_EC_OSPM_EJECT			0x103
  #define ACPI_OST_EC_OSPM_INSERTION		0x200
  
  /* _OST General Processing Status Code */
  #define ACPI_OST_SC_SUCCESS			0x0
  #define ACPI_OST_SC_NON_SPECIFIC_FAILURE	0x1
  #define ACPI_OST_SC_UNRECOGNIZED_NOTIFY		0x2
  
  /* _OST OS Shutdown Processing (0x100) Status Code */
  #define ACPI_OST_SC_OS_SHUTDOWN_DENIED		0x80
  #define ACPI_OST_SC_OS_SHUTDOWN_IN_PROGRESS	0x81
  #define ACPI_OST_SC_OS_SHUTDOWN_COMPLETED	0x82
  #define ACPI_OST_SC_OS_SHUTDOWN_NOT_SUPPORTED	0x83
  
  /* _OST Ejection Request (0x3, 0x103) Status Code */
  #define ACPI_OST_SC_EJECT_NOT_SUPPORTED		0x80
  #define ACPI_OST_SC_DEVICE_IN_USE		0x81
  #define ACPI_OST_SC_DEVICE_BUSY			0x82
  #define ACPI_OST_SC_EJECT_DEPENDENCY_BUSY	0x83
  #define ACPI_OST_SC_EJECT_IN_PROGRESS		0x84
  
  /* _OST Insertion Request (0x200) Status Code */
  #define ACPI_OST_SC_INSERT_IN_PROGRESS		0x80
  #define ACPI_OST_SC_DRIVER_LOAD_FAILURE		0x81
  #define ACPI_OST_SC_INSERT_NOT_SUPPORTED	0x82
  
  extern void acpi_early_init(void);
  
  extern int acpi_nvs_register(__u64 start, __u64 size);
  
  extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
  				    void *data);
  
  const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
  					       const struct device *dev);
  
  static inline bool acpi_driver_match_device(struct device *dev,
  					    const struct device_driver *drv)
  {
  	return !!acpi_match_device(drv->acpi_match_table, dev);
  }
  
  int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
  int acpi_device_modalias(struct device *, char *, int);
  
  #define ACPI_PTR(_ptr)	(_ptr)
  
  #else	/* !CONFIG_ACPI */
  
  #define acpi_disabled 1
  
  #define ACPI_COMPANION(dev)		(NULL)
  #define ACPI_COMPANION_SET(dev, adev)	do { } while (0)
  #define ACPI_HANDLE(dev)		(NULL)
  
  static inline const char *acpi_dev_name(struct acpi_device *adev)
  {
  	return NULL;
  }
  
  static inline void acpi_early_init(void) { }
  
  static inline int early_acpi_boot_init(void)
  {
  	return 0;
  }
  static inline int acpi_boot_init(void)
  {
  	return 0;
  }
  
  static inline void acpi_boot_table_init(void)
  {
  	return;
  }
  
  static inline int acpi_mps_check(void)
  {
  	return 0;
  }
  
  static inline int acpi_check_resource_conflict(struct resource *res)
  {
  	return 0;
  }
  
  static inline int acpi_check_region(resource_size_t start, resource_size_t n,
  				    const char *name)
  {
  	return 0;
  }
  
  struct acpi_table_header;
  static inline int acpi_table_parse(char *id,
  				int (*handler)(struct acpi_table_header *))
  {
  	return -ENODEV;
  }
  
  static inline int acpi_nvs_register(__u64 start, __u64 size)
  {
  	return 0;
  }
  
  static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
  					   void *data)
  {
  	return 0;
  }
  
  struct acpi_device_id;
  
  static inline const struct acpi_device_id *acpi_match_device(
  	const struct acpi_device_id *ids, const struct device *dev)
  {
  	return NULL;
  }
  
  static inline bool acpi_driver_match_device(struct device *dev,
  					    const struct device_driver *drv)
  {
  	return false;
  }
  
  static inline int acpi_device_uevent_modalias(struct device *dev,
  				struct kobj_uevent_env *env)
  {
  	return -ENODEV;
  }
  
  static inline int acpi_device_modalias(struct device *dev,
  				char *buf, int size)
  {
  	return -ENODEV;
  }
  
  #define ACPI_PTR(_ptr)	(NULL)
  
  #endif	/* !CONFIG_ACPI */
  
  #ifdef CONFIG_ACPI
  void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
  			       u32 pm1a_ctrl,  u32 pm1b_ctrl));
  
  acpi_status acpi_os_prepare_sleep(u8 sleep_state,
  				  u32 pm1a_control, u32 pm1b_control);
  
  void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
  				        u32 val_a,  u32 val_b));
  
  acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
  					   u32 val_a, u32 val_b);
  
  #ifdef CONFIG_X86
  void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
  #else
  static inline void arch_reserve_mem_area(acpi_physical_address addr,
  					  size_t size)
  {
  }
  #endif /* CONFIG_X86 */
  #else
  #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
  #endif
  
  #if defined(CONFIG_ACPI) && defined(CONFIG_PM_RUNTIME)
  int acpi_dev_runtime_suspend(struct device *dev);
  int acpi_dev_runtime_resume(struct device *dev);
  int acpi_subsys_runtime_suspend(struct device *dev);
  int acpi_subsys_runtime_resume(struct device *dev);
  #else
  static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; }
  static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; }
  static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; }
  static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; }
  #endif
  
  #if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP)
  int acpi_dev_suspend_late(struct device *dev);
  int acpi_dev_resume_early(struct device *dev);
  int acpi_subsys_prepare(struct device *dev);
  void acpi_subsys_complete(struct device *dev);
  int acpi_subsys_suspend_late(struct device *dev);
  int acpi_subsys_resume_early(struct device *dev);
  int acpi_subsys_suspend(struct device *dev);
  int acpi_subsys_freeze(struct device *dev);
  #else
  static inline int acpi_dev_suspend_late(struct device *dev) { return 0; }
  static inline int acpi_dev_resume_early(struct device *dev) { return 0; }
  static inline int acpi_subsys_prepare(struct device *dev) { return 0; }
  static inline void acpi_subsys_complete(struct device *dev) {}
  static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; }
  static inline int acpi_subsys_resume_early(struct device *dev) { return 0; }
  static inline int acpi_subsys_suspend(struct device *dev) { return 0; }
  static inline int acpi_subsys_freeze(struct device *dev) { return 0; }
  #endif
  
  #if defined(CONFIG_ACPI) && defined(CONFIG_PM)
  struct acpi_device *acpi_dev_pm_get_node(struct device *dev);
  int acpi_dev_pm_attach(struct device *dev, bool power_on);
  void acpi_dev_pm_detach(struct device *dev, bool power_off);
  #else
  static inline struct acpi_device *acpi_dev_pm_get_node(struct device *dev)
  {
  	return NULL;
  }
  static inline int acpi_dev_pm_attach(struct device *dev, bool power_on)
  {
  	return -ENODEV;
  }
  static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {}
  #endif
  
  #ifdef CONFIG_ACPI
  __printf(3, 4)
  void acpi_handle_printk(const char *level, acpi_handle handle,
  			const char *fmt, ...);
  #else	/* !CONFIG_ACPI */
  static inline __printf(3, 4) void
  acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
  #endif	/* !CONFIG_ACPI */
  
  #if defined(CONFIG_ACPI) && defined(CONFIG_DYNAMIC_DEBUG)
  __printf(3, 4)
  void __acpi_handle_debug(struct _ddebug *descriptor, acpi_handle handle, const char *fmt, ...);
  #else
  #define __acpi_handle_debug(descriptor, handle, fmt, ...)		\
  	acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__);
  #endif
  
  /*
   * acpi_handle_<level>: Print message with ACPI prefix and object path
   *
   * These interfaces acquire the global namespace mutex to obtain an object
   * path.  In interrupt context, it shows the object path as <n/a>.
   */
  #define acpi_handle_emerg(handle, fmt, ...)				\
  	acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__)
  #define acpi_handle_alert(handle, fmt, ...)				\
  	acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__)
  #define acpi_handle_crit(handle, fmt, ...)				\
  	acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__)
  #define acpi_handle_err(handle, fmt, ...)				\
  	acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__)
  #define acpi_handle_warn(handle, fmt, ...)				\
  	acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__)
  #define acpi_handle_notice(handle, fmt, ...)				\
  	acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__)
  #define acpi_handle_info(handle, fmt, ...)				\
  	acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__)
  
  #if defined(DEBUG)
  #define acpi_handle_debug(handle, fmt, ...)				\
  	acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__)
  #else
  #if defined(CONFIG_DYNAMIC_DEBUG)
  #define acpi_handle_debug(handle, fmt, ...)				\
  do {									\
  	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);			\
  	if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT))		\
  		__acpi_handle_debug(&descriptor, handle, pr_fmt(fmt),	\
  				##__VA_ARGS__);				\
  } while (0)
  #else
  #define acpi_handle_debug(handle, fmt, ...)				\
  ({									\
  	if (0)								\
  		acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \
  	0;								\
  })
  #endif
  #endif
  
  #endif	/*_LINUX_ACPI_H*/
  