567 lines
16 KiB
C
567 lines
16 KiB
C
/*
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* acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
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*
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* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#ifndef __ACPI_BUS_H__
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#define __ACPI_BUS_H__
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#include <linux/device.h>
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#include <acpi/acpi.h>
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/* TBD: Make dynamic */
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#define ACPI_MAX_HANDLES 10
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struct acpi_handle_list {
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u32 count;
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acpi_handle handles[ACPI_MAX_HANDLES];
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};
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/* acpi_utils.h */
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acpi_status
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acpi_extract_package(union acpi_object *package,
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struct acpi_buffer *format, struct acpi_buffer *buffer);
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acpi_status
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acpi_evaluate_integer(acpi_handle handle,
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acpi_string pathname,
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struct acpi_object_list *arguments, unsigned long long *data);
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acpi_status
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acpi_evaluate_reference(acpi_handle handle,
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acpi_string pathname,
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struct acpi_object_list *arguments,
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struct acpi_handle_list *list);
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acpi_status
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acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event,
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u32 status_code, struct acpi_buffer *status_buf);
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acpi_status
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acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
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#ifdef CONFIG_ACPI
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#include <linux/proc_fs.h>
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#define ACPI_BUS_FILE_ROOT "acpi"
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extern struct proc_dir_entry *acpi_root_dir;
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enum acpi_bus_removal_type {
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ACPI_BUS_REMOVAL_NORMAL = 0,
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ACPI_BUS_REMOVAL_EJECT,
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ACPI_BUS_REMOVAL_SUPRISE,
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ACPI_BUS_REMOVAL_TYPE_COUNT
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};
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enum acpi_bus_device_type {
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ACPI_BUS_TYPE_DEVICE = 0,
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ACPI_BUS_TYPE_POWER,
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ACPI_BUS_TYPE_PROCESSOR,
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ACPI_BUS_TYPE_THERMAL,
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ACPI_BUS_TYPE_POWER_BUTTON,
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ACPI_BUS_TYPE_SLEEP_BUTTON,
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ACPI_BUS_DEVICE_TYPE_COUNT
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};
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struct acpi_driver;
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struct acpi_device;
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/*
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* ACPI Scan Handler
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* -----------------
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*/
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struct acpi_scan_handler {
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const struct acpi_device_id *ids;
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struct list_head list_node;
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int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
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void (*detach)(struct acpi_device *dev);
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};
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/*
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* ACPI Driver
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* -----------
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*/
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typedef int (*acpi_op_add) (struct acpi_device * device);
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typedef int (*acpi_op_remove) (struct acpi_device * device);
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typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
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struct acpi_device_ops {
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acpi_op_add add;
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acpi_op_remove remove;
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acpi_op_notify notify;
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};
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#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
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struct acpi_driver {
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char name[80];
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char class[80];
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const struct acpi_device_id *ids; /* Supported Hardware IDs */
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unsigned int flags;
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struct acpi_device_ops ops;
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struct device_driver drv;
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struct module *owner;
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};
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/*
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* ACPI Device
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* -----------
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*/
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/* Status (_STA) */
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struct acpi_device_status {
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u32 present:1;
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u32 enabled:1;
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u32 show_in_ui:1;
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u32 functional:1;
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u32 battery_present:1;
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u32 reserved:27;
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};
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/* Flags */
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struct acpi_device_flags {
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u32 dynamic_status:1;
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u32 bus_address:1;
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u32 removable:1;
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u32 ejectable:1;
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u32 suprise_removal_ok:1;
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u32 power_manageable:1;
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u32 performance_manageable:1;
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u32 eject_pending:1;
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u32 match_driver:1;
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u32 reserved:23;
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};
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/* File System */
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struct acpi_device_dir {
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struct proc_dir_entry *entry;
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};
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#define acpi_device_dir(d) ((d)->dir.entry)
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/* Plug and Play */
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typedef char acpi_bus_id[8];
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typedef unsigned long acpi_bus_address;
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typedef char acpi_device_name[40];
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typedef char acpi_device_class[20];
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struct acpi_hardware_id {
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struct list_head list;
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char *id;
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};
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struct acpi_device_pnp {
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acpi_bus_id bus_id; /* Object name */
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acpi_bus_address bus_address; /* _ADR */
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char *unique_id; /* _UID */
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struct list_head ids; /* _HID and _CIDs */
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acpi_device_name device_name; /* Driver-determined */
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acpi_device_class device_class; /* " */
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union acpi_object *str_obj; /* unicode string for _STR method */
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unsigned long sun; /* _SUN */
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};
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#define acpi_device_bid(d) ((d)->pnp.bus_id)
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#define acpi_device_adr(d) ((d)->pnp.bus_address)
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const char *acpi_device_hid(struct acpi_device *device);
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#define acpi_device_name(d) ((d)->pnp.device_name)
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#define acpi_device_class(d) ((d)->pnp.device_class)
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/* Power Management */
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struct acpi_device_power_flags {
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u32 explicit_get:1; /* _PSC present? */
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u32 power_resources:1; /* Power resources */
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u32 inrush_current:1; /* Serialize Dx->D0 */
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u32 power_removed:1; /* Optimize Dx->D0 */
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u32 reserved:28;
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};
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struct acpi_device_power_state {
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struct {
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u8 valid:1;
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u8 os_accessible:1;
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u8 explicit_set:1; /* _PSx present? */
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u8 reserved:6;
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} flags;
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int power; /* % Power (compared to D0) */
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int latency; /* Dx->D0 time (microseconds) */
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struct list_head resources; /* Power resources referenced */
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};
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struct acpi_device_power {
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int state; /* Current state */
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struct acpi_device_power_flags flags;
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struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
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};
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/* Performance Management */
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struct acpi_device_perf_flags {
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u8 reserved:8;
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};
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struct acpi_device_perf_state {
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struct {
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u8 valid:1;
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u8 reserved:7;
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} flags;
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u8 power; /* % Power (compared to P0) */
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u8 performance; /* % Performance ( " ) */
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int latency; /* Px->P0 time (microseconds) */
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};
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struct acpi_device_perf {
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int state;
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struct acpi_device_perf_flags flags;
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int state_count;
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struct acpi_device_perf_state *states;
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};
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/* Wakeup Management */
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struct acpi_device_wakeup_flags {
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u8 valid:1; /* Can successfully enable wakeup? */
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u8 run_wake:1; /* Run-Wake GPE devices */
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u8 notifier_present:1; /* Wake-up notify handler has been installed */
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};
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struct acpi_device_wakeup {
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acpi_handle gpe_device;
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u64 gpe_number;
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u64 sleep_state;
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struct list_head resources;
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struct acpi_device_wakeup_flags flags;
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int prepare_count;
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};
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struct acpi_device_physical_node {
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u8 node_id;
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struct list_head node;
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struct device *dev;
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};
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/* set maximum of physical nodes to 32 for expansibility */
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#define ACPI_MAX_PHYSICAL_NODE 32
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/* Device */
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struct acpi_device {
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int device_type;
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acpi_handle handle; /* no handle for fixed hardware */
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struct acpi_device *parent;
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struct list_head children;
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struct list_head node;
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struct list_head wakeup_list;
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struct acpi_device_status status;
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struct acpi_device_flags flags;
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struct acpi_device_pnp pnp;
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struct acpi_device_power power;
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struct acpi_device_wakeup wakeup;
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struct acpi_device_perf performance;
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struct acpi_device_dir dir;
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struct acpi_scan_handler *handler;
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struct acpi_driver *driver;
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void *driver_data;
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struct device dev;
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enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
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u8 physical_node_count;
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struct list_head physical_node_list;
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struct mutex physical_node_lock;
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DECLARE_BITMAP(physical_node_id_bitmap, ACPI_MAX_PHYSICAL_NODE);
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struct list_head power_dependent;
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void (*remove)(struct acpi_device *);
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};
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static inline void *acpi_driver_data(struct acpi_device *d)
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{
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return d->driver_data;
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}
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#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
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#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
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/* acpi_device.dev.bus == &acpi_bus_type */
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extern struct bus_type acpi_bus_type;
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/*
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* Events
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* ------
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*/
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struct acpi_bus_event {
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struct list_head node;
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acpi_device_class device_class;
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acpi_bus_id bus_id;
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u32 type;
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u32 data;
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};
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struct acpi_eject_event {
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struct acpi_device *device;
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u32 event;
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};
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extern struct kobject *acpi_kobj;
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extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
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void acpi_bus_private_data_handler(acpi_handle, void *);
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int acpi_bus_get_private_data(acpi_handle, void **);
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extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
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extern int register_acpi_notifier(struct notifier_block *);
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extern int unregister_acpi_notifier(struct notifier_block *);
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extern int register_acpi_bus_notifier(struct notifier_block *nb);
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extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
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/*
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* External Functions
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*/
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int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
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void acpi_bus_data_handler(acpi_handle handle, void *context);
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acpi_status acpi_bus_get_status_handle(acpi_handle handle,
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unsigned long long *sta);
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int acpi_bus_get_status(struct acpi_device *device);
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#ifdef CONFIG_PM
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int acpi_bus_set_power(acpi_handle handle, int state);
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const char *acpi_power_state_string(int state);
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int acpi_device_get_power(struct acpi_device *device, int *state);
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int acpi_device_set_power(struct acpi_device *device, int state);
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int acpi_bus_init_power(struct acpi_device *device);
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int acpi_bus_update_power(acpi_handle handle, int *state_p);
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bool acpi_bus_power_manageable(acpi_handle handle);
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bool acpi_bus_can_wakeup(acpi_handle handle);
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#else /* !CONFIG_PM */
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static inline int acpi_bus_set_power(acpi_handle handle, int state)
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{
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return 0;
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}
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static inline const char *acpi_power_state_string(int state)
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{
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return "D0";
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}
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static inline int acpi_device_get_power(struct acpi_device *device, int *state)
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{
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return 0;
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}
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static inline int acpi_device_set_power(struct acpi_device *device, int state)
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{
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return 0;
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}
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static inline int acpi_bus_init_power(struct acpi_device *device)
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{
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return 0;
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}
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static inline int acpi_bus_update_power(acpi_handle handle, int *state_p)
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{
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return 0;
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}
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static inline bool acpi_bus_power_manageable(acpi_handle handle)
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{
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return false;
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}
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static inline bool acpi_bus_can_wakeup(acpi_handle handle)
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{
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return false;
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}
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#endif /* !CONFIG_PM */
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#ifdef CONFIG_ACPI_PROC_EVENT
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int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
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int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
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int acpi_bus_receive_event(struct acpi_bus_event *event);
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#else
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static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
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{ return 0; }
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#endif
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void acpi_scan_lock_acquire(void);
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void acpi_scan_lock_release(void);
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int acpi_scan_add_handler(struct acpi_scan_handler *handler);
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int acpi_bus_register_driver(struct acpi_driver *driver);
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void acpi_bus_unregister_driver(struct acpi_driver *driver);
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int acpi_bus_scan(acpi_handle handle);
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void acpi_bus_hot_remove_device(void *context);
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void acpi_bus_trim(struct acpi_device *start);
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acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
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int acpi_match_device_ids(struct acpi_device *device,
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const struct acpi_device_id *ids);
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int acpi_create_dir(struct acpi_device *);
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void acpi_remove_dir(struct acpi_device *);
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/**
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* module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
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* @__acpi_driver: acpi_driver struct
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*
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* Helper macro for ACPI drivers which do not do anything special in module
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* init/exit. This eliminates a lot of boilerplate. Each module may only
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* use this macro once, and calling it replaces module_init() and module_exit()
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*/
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#define module_acpi_driver(__acpi_driver) \
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module_driver(__acpi_driver, acpi_bus_register_driver, \
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acpi_bus_unregister_driver)
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/*
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* Bind physical devices with ACPI devices
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*/
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struct acpi_bus_type {
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struct list_head list;
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struct bus_type *bus;
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/* For general devices under the bus */
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int (*find_device) (struct device *, acpi_handle *);
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/* For bridges, such as PCI root bridge, IDE controller */
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int (*find_bridge) (struct device *, acpi_handle *);
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void (*setup)(struct device *);
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void (*cleanup)(struct device *);
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};
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int register_acpi_bus_type(struct acpi_bus_type *);
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int unregister_acpi_bus_type(struct acpi_bus_type *);
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struct acpi_pci_root {
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struct list_head node;
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struct acpi_device * device;
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struct pci_bus *bus;
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u16 segment;
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struct resource secondary; /* downstream bus range */
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u32 osc_support_set; /* _OSC state of support bits */
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u32 osc_control_set; /* _OSC state of control bits */
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phys_addr_t mcfg_addr;
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};
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/* helper */
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acpi_handle acpi_get_child(acpi_handle, u64);
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int acpi_is_root_bridge(acpi_handle);
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acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
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struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
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#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)ACPI_HANDLE(dev))
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int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
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int acpi_disable_wakeup_device_power(struct acpi_device *dev);
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#ifdef CONFIG_PM
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acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
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acpi_notify_handler handler, void *context);
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acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
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acpi_notify_handler handler);
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int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
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u32 target_state, int d_max_in, int *d_min_p);
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int acpi_pm_device_sleep_state(struct device *, int *, int);
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void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
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void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
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#else
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static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
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acpi_notify_handler handler,
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void *context)
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{
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return AE_SUPPORT;
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}
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static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
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acpi_notify_handler handler)
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{
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return AE_SUPPORT;
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}
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static inline int __acpi_device_power_state(int m, int *p)
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{
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if (p)
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*p = ACPI_STATE_D0;
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return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
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}
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static inline int acpi_device_power_state(struct device *dev,
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struct acpi_device *adev,
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u32 target_state, int d_max_in,
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int *d_min_p)
|
|
{
|
|
return __acpi_device_power_state(d_max_in, d_min_p);
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|
}
|
|
static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
|
|
{
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|
return __acpi_device_power_state(m, p);
|
|
}
|
|
static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
|
|
struct device *depdev) {}
|
|
static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
|
|
struct device *depdev) {}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM_RUNTIME
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|
int __acpi_device_run_wake(struct acpi_device *, bool);
|
|
int acpi_pm_device_run_wake(struct device *, bool);
|
|
#else
|
|
static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
|
|
int acpi_pm_device_sleep_wake(struct device *, bool);
|
|
#else
|
|
static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
|
|
u32 target_state, bool enable)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_ACPI_SLEEP
|
|
u32 acpi_target_system_state(void);
|
|
#else
|
|
static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
|
|
#endif
|
|
|
|
static inline bool acpi_device_power_manageable(struct acpi_device *adev)
|
|
{
|
|
return adev->flags.power_manageable;
|
|
}
|
|
|
|
static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
|
|
{
|
|
return adev->wakeup.flags.valid;
|
|
}
|
|
|
|
static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
|
|
{
|
|
return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
|
|
}
|
|
|
|
#else /* CONFIG_ACPI */
|
|
|
|
static inline int register_acpi_bus_type(void *bus) { return 0; }
|
|
static inline int unregister_acpi_bus_type(void *bus) { return 0; }
|
|
|
|
#endif /* CONFIG_ACPI */
|
|
|
|
#endif /*__ACPI_BUS_H__*/
|