364 lines
9.5 KiB
C
364 lines
9.5 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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#define PREFIX "ACPI: "
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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 *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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#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_SYSTEM,
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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 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, int type);
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typedef int (*acpi_op_lock) (struct acpi_device * device, int type);
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typedef int (*acpi_op_start) (struct acpi_device * device);
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typedef int (*acpi_op_stop) (struct acpi_device * device, int type);
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typedef int (*acpi_op_suspend) (struct acpi_device * device, int state);
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typedef int (*acpi_op_resume) (struct acpi_device * device, int state);
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typedef int (*acpi_op_scan) (struct acpi_device * device);
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typedef int (*acpi_op_bind) (struct acpi_device * device);
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typedef int (*acpi_op_unbind) (struct acpi_device * device);
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typedef int (*acpi_op_match) (struct acpi_device * device,
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struct acpi_driver * driver);
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struct acpi_bus_ops {
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u32 acpi_op_add:1;
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u32 acpi_op_remove:1;
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u32 acpi_op_lock:1;
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u32 acpi_op_start:1;
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u32 acpi_op_stop:1;
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u32 acpi_op_suspend:1;
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u32 acpi_op_resume:1;
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u32 acpi_op_scan:1;
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u32 acpi_op_bind:1;
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u32 acpi_op_unbind:1;
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u32 acpi_op_match:1;
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u32 reserved:21;
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};
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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_lock lock;
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acpi_op_start start;
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acpi_op_stop stop;
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acpi_op_suspend suspend;
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acpi_op_resume resume;
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acpi_op_scan scan;
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acpi_op_bind bind;
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acpi_op_unbind unbind;
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acpi_op_match match;
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};
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struct acpi_driver {
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struct list_head node;
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char name[80];
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char class[80];
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atomic_t references;
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char *ids; /* Supported Hardware IDs */
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struct acpi_device_ops ops;
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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 hardware_id:1;
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u32 compatible_ids:1;
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u32 bus_address:1;
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u32 unique_id:1;
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u32 removable:1;
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u32 ejectable:1;
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u32 lockable: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 wake_capable:1; /* Wakeup(_PRW) supported? */
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u32 force_power_state:1;
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u32 reserved:19;
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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[5];
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typedef unsigned long acpi_bus_address;
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typedef char acpi_hardware_id[9];
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typedef char acpi_unique_id[9];
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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_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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acpi_hardware_id hardware_id; /* _HID */
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struct acpi_compatible_id_list *cid_list; /* _CIDs */
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acpi_unique_id unique_id; /* _UID */
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acpi_device_name device_name; /* Driver-determined */
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acpi_device_class device_class; /* " */
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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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#define acpi_device_hid(d) ((d)->pnp.hardware_id)
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#define acpi_device_uid(d) ((d)->pnp.unique_id)
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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 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 acpi_handle_list 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[4]; /* Power states (D0-D3) */
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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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};
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struct acpi_device_wakeup_state {
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u8 enabled:1;
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u8 active:1;
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};
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struct acpi_device_wakeup {
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acpi_handle gpe_device;
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acpi_integer gpe_number;
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acpi_integer sleep_state;
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struct acpi_handle_list resources;
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struct acpi_device_wakeup_state state;
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struct acpi_device_wakeup_flags flags;
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};
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/* Device */
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struct acpi_device {
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acpi_handle handle;
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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 list_head g_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_device_ops ops;
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struct acpi_driver *driver;
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void *driver_data;
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struct kobject kobj;
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struct device dev;
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};
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#define acpi_driver_data(d) ((d)->driver_data)
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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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extern struct subsystem acpi_subsys;
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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, u32 function, void *context);
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int acpi_bus_get_status(struct acpi_device *device);
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int acpi_bus_get_power(acpi_handle handle, int *state);
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int acpi_bus_set_power(acpi_handle handle, int state);
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int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data);
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int acpi_bus_receive_event(struct acpi_bus_event *event);
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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_add(struct acpi_device **child, struct acpi_device *parent,
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acpi_handle handle, int type);
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int acpi_bus_trim(struct acpi_device *start, int rmdevice);
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int acpi_bus_start(struct acpi_device *device);
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acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd);
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int acpi_match_ids(struct acpi_device *device, char *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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* Bind physical devices with ACPI devices
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*/
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#include <linux/device.h>
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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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};
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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 device *acpi_get_physical_device(acpi_handle);
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/* helper */
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acpi_handle acpi_get_child(acpi_handle, acpi_integer);
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acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
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#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
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#endif /* CONFIG_ACPI */
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#endif /*__ACPI_BUS_H__*/
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