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bb74ac23b1
_SUN method provides the slot unique-ID in the ACPI namespace. And The value is written in Advanced Configuration and Power Interface Specification as follows: "The _SUN value is required to be unique among the slots ofthe same type. It is also recommended that this number match the slot number printed on the physical slot whenever possible." So if we can know the value, we can identify the physical position of the slot in the system. The patch creates "sun" file in sysfs for identifying physical position of the slot. Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Reviewed-by: Toshi Kani <toshi.kani@hp.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
451 lines
13 KiB
C
451 lines
13 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 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_start) (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 void (*acpi_op_notify) (struct acpi_device * device, u32 event);
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struct acpi_bus_ops {
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u32 acpi_op_add:1;
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u32 acpi_op_start:1;
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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_start start;
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acpi_op_bind bind;
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acpi_op_unbind unbind;
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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 reserved:24;
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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 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[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 acpi_handle_list 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_device_ops ops;
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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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struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
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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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};
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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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acpi_handle handle;
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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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int acpi_bus_set_power(acpi_handle handle, int state);
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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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int acpi_power_resource_register_device(struct device *dev, acpi_handle handle);
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void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle);
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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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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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void acpi_bus_hot_remove_device(void *context);
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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_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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};
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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 acpi_pci_id id;
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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)((dev)->archdata.acpi_handle))
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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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int acpi_pm_device_sleep_state(struct device *, int *, int);
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#else
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static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
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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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#endif
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#ifdef CONFIG_PM_SLEEP
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int acpi_pm_device_run_wake(struct device *, bool);
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int acpi_pm_device_sleep_wake(struct device *, bool);
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#else
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static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
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{
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return -ENODEV;
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}
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static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
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{
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return -ENODEV;
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}
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#endif
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#else /* CONFIG_ACPI */
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static inline int register_acpi_bus_type(void *bus) { return 0; }
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static inline int unregister_acpi_bus_type(void *bus) { return 0; }
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#endif /* CONFIG_ACPI */
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#endif /*__ACPI_BUS_H__*/
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