683058e315
Modify the generic ACPI hotplug code to be able to check if devices scheduled for hot-removal may be gracefully removed from the system using the device offline/online mechanism introduced previously. Namely, make acpi_scan_hot_remove() handling device hot-removal call device_offline() for all physical companions of the ACPI device nodes involved in the operation and check the results. If any of the device_offline() calls fails, the function will not progress to the removal phase (which cannot be aborted), unless its (new) force argument is set (in case of a failing offline it will put the devices offlined by it back online). In support of 'forced' device hot-removal, add a new sysfs attribute 'force_remove' that will reside under /sys/firmware/acpi/hotplug/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Toshi Kani <toshi.kani@hp.com>
155 lines
5.4 KiB
C
155 lines
5.4 KiB
C
/*
|
|
* acpi/internal.h
|
|
* For use by Linux/ACPI infrastructure, not drivers
|
|
*
|
|
* Copyright (c) 2009, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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.,
|
|
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#ifndef _ACPI_INTERNAL_H_
|
|
#define _ACPI_INTERNAL_H_
|
|
|
|
#define PREFIX "ACPI: "
|
|
|
|
int init_acpi_device_notify(void);
|
|
int acpi_scan_init(void);
|
|
#ifdef CONFIG_ACPI_PCI_SLOT
|
|
void acpi_pci_slot_init(void);
|
|
#else
|
|
static inline void acpi_pci_slot_init(void) { }
|
|
#endif
|
|
void acpi_pci_root_init(void);
|
|
void acpi_pci_link_init(void);
|
|
void acpi_pci_root_hp_init(void);
|
|
void acpi_platform_init(void);
|
|
int acpi_sysfs_init(void);
|
|
void acpi_csrt_init(void);
|
|
#ifdef CONFIG_ACPI_CONTAINER
|
|
void acpi_container_init(void);
|
|
#else
|
|
static inline void acpi_container_init(void) {}
|
|
#endif
|
|
#ifdef CONFIG_ACPI_HOTPLUG_MEMORY
|
|
void acpi_memory_hotplug_init(void);
|
|
#else
|
|
static inline void acpi_memory_hotplug_init(void) {}
|
|
#endif
|
|
|
|
extern bool acpi_force_hot_remove;
|
|
|
|
void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
|
|
const char *name);
|
|
int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler,
|
|
const char *hotplug_profile_name);
|
|
void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
extern struct dentry *acpi_debugfs_dir;
|
|
int acpi_debugfs_init(void);
|
|
#else
|
|
static inline void acpi_debugfs_init(void) { return; }
|
|
#endif
|
|
#ifdef CONFIG_X86_INTEL_LPSS
|
|
void acpi_lpss_init(void);
|
|
#else
|
|
static inline void acpi_lpss_init(void) {}
|
|
#endif
|
|
|
|
/* --------------------------------------------------------------------------
|
|
Device Node Initialization / Removal
|
|
-------------------------------------------------------------------------- */
|
|
#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \
|
|
ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING)
|
|
|
|
int acpi_device_add(struct acpi_device *device,
|
|
void (*release)(struct device *));
|
|
void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
|
|
int type, unsigned long long sta);
|
|
void acpi_device_add_finalize(struct acpi_device *device);
|
|
void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
|
|
|
|
/* --------------------------------------------------------------------------
|
|
Power Resource
|
|
-------------------------------------------------------------------------- */
|
|
int acpi_power_init(void);
|
|
void acpi_power_resources_list_free(struct list_head *list);
|
|
int acpi_extract_power_resources(union acpi_object *package, unsigned int start,
|
|
struct list_head *list);
|
|
int acpi_add_power_resource(acpi_handle handle);
|
|
void acpi_power_add_remove_device(struct acpi_device *adev, bool add);
|
|
int acpi_power_wakeup_list_init(struct list_head *list, int *system_level);
|
|
int acpi_device_sleep_wake(struct acpi_device *dev,
|
|
int enable, int sleep_state, int dev_state);
|
|
int acpi_power_get_inferred_state(struct acpi_device *device, int *state);
|
|
int acpi_power_on_resources(struct acpi_device *device, int state);
|
|
int acpi_power_transition(struct acpi_device *device, int state);
|
|
|
|
int acpi_wakeup_device_init(void);
|
|
void acpi_early_processor_set_pdc(void);
|
|
|
|
/* --------------------------------------------------------------------------
|
|
Embedded Controller
|
|
-------------------------------------------------------------------------- */
|
|
struct acpi_ec {
|
|
acpi_handle handle;
|
|
unsigned long gpe;
|
|
unsigned long command_addr;
|
|
unsigned long data_addr;
|
|
unsigned long global_lock;
|
|
unsigned long flags;
|
|
struct mutex mutex;
|
|
wait_queue_head_t wait;
|
|
struct list_head list;
|
|
struct transaction *curr;
|
|
spinlock_t lock;
|
|
};
|
|
|
|
extern struct acpi_ec *first_ec;
|
|
|
|
int acpi_ec_init(void);
|
|
int acpi_ec_ecdt_probe(void);
|
|
int acpi_boot_ec_enable(void);
|
|
void acpi_ec_block_transactions(void);
|
|
void acpi_ec_unblock_transactions(void);
|
|
void acpi_ec_unblock_transactions_early(void);
|
|
|
|
/*--------------------------------------------------------------------------
|
|
Suspend/Resume
|
|
-------------------------------------------------------------------------- */
|
|
extern int acpi_sleep_init(void);
|
|
|
|
#ifdef CONFIG_ACPI_SLEEP
|
|
int acpi_sleep_proc_init(void);
|
|
int suspend_nvs_alloc(void);
|
|
void suspend_nvs_free(void);
|
|
int suspend_nvs_save(void);
|
|
void suspend_nvs_restore(void);
|
|
#else
|
|
static inline int acpi_sleep_proc_init(void) { return 0; }
|
|
static inline int suspend_nvs_alloc(void) { return 0; }
|
|
static inline void suspend_nvs_free(void) {}
|
|
static inline int suspend_nvs_save(void) { return 0; }
|
|
static inline void suspend_nvs_restore(void) {}
|
|
#endif
|
|
|
|
/*--------------------------------------------------------------------------
|
|
Platform bus support
|
|
-------------------------------------------------------------------------- */
|
|
struct platform_device;
|
|
|
|
int acpi_create_platform_device(struct acpi_device *adev,
|
|
const struct acpi_device_id *id);
|
|
|
|
#endif /* _ACPI_INTERNAL_H_ */
|