2005-04-17 05:20:36 +07:00
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/*
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* acpi_system.c - ACPI System Driver ($Revision: 63 $)
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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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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/init.h>
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#include <asm/uaccess.h>
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#include <acpi/acpi_drivers.h>
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#define _COMPONENT ACPI_SYSTEM_COMPONENT
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2007-02-13 10:42:12 +07:00
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ACPI_MODULE_NAME("system");
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2007-01-29 10:02:42 +07:00
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#ifdef MODULE_PARAM_PREFIX
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#undef MODULE_PARAM_PREFIX
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#endif
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#define MODULE_PARAM_PREFIX "acpi."
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2005-04-17 05:20:36 +07:00
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#define ACPI_SYSTEM_CLASS "system"
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#define ACPI_SYSTEM_DEVICE_NAME "System"
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2008-02-06 13:26:55 +07:00
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u32 acpi_irq_handled;
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2007-01-29 10:02:42 +07:00
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/*
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* Make ACPICA version work as module param
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*/
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ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
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static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
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{
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2007-01-29 10:02:42 +07:00
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int result;
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result = sprintf(buffer, "%x", ACPI_CA_VERSION);
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return result;
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}
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module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
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ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
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/* --------------------------------------------------------------------------
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FS Interface (/sys)
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-------------------------------------------------------------------------- */
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static LIST_HEAD(acpi_table_attr_list);
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2007-12-18 02:54:39 +07:00
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static struct kobject *tables_kobj;
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ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
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struct acpi_table_attr {
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struct bin_attribute attr;
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char name[8];
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int instance;
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struct list_head node;
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};
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static ssize_t acpi_table_show(struct kobject *kobj,
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struct bin_attribute *bin_attr, char *buf,
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loff_t offset, size_t count)
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{
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struct acpi_table_attr *table_attr =
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container_of(bin_attr, struct acpi_table_attr, attr);
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struct acpi_table_header *table_header = NULL;
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acpi_status status;
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ssize_t ret_count = count;
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status =
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acpi_get_table(table_attr->name, table_attr->instance,
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&table_header);
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if (ACPI_FAILURE(status))
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return -ENODEV;
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if (offset >= table_header->length) {
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ret_count = 0;
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goto end;
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}
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if (offset + ret_count > table_header->length)
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ret_count = table_header->length - offset;
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memcpy(buf, ((char *)table_header) + offset, ret_count);
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end:
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return ret_count;
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}
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static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
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struct acpi_table_header *table_header)
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{
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struct acpi_table_header *header = NULL;
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struct acpi_table_attr *attr = NULL;
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memcpy(table_attr->name, table_header->signature, ACPI_NAME_SIZE);
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list_for_each_entry(attr, &acpi_table_attr_list, node) {
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if (!memcmp(table_header->signature, attr->name,
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ACPI_NAME_SIZE))
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if (table_attr->instance < attr->instance)
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table_attr->instance = attr->instance;
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}
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table_attr->instance++;
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if (table_attr->instance > 1 || (table_attr->instance == 1 &&
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!acpi_get_table(table_header->
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signature, 2,
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&header)))
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sprintf(table_attr->name + 4, "%d", table_attr->instance);
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table_attr->attr.size = 0;
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table_attr->attr.read = acpi_table_show;
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table_attr->attr.attr.name = table_attr->name;
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table_attr->attr.attr.mode = 0444;
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table_attr->attr.attr.owner = THIS_MODULE;
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return;
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}
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static int acpi_system_sysfs_init(void)
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{
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struct acpi_table_attr *table_attr;
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struct acpi_table_header *table_header = NULL;
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int table_index = 0;
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int result;
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2007-12-18 02:54:39 +07:00
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tables_kobj = kobject_create_and_add("tables", acpi_kobj);
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if (!tables_kobj)
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return -ENOMEM;
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ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
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do {
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result = acpi_get_table_by_index(table_index, &table_header);
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if (!result) {
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table_index++;
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table_attr = NULL;
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table_attr =
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kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
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if (!table_attr)
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return -ENOMEM;
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acpi_table_attr_init(table_attr, table_header);
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result =
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2007-12-18 02:54:39 +07:00
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sysfs_create_bin_file(tables_kobj,
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ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
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&table_attr->attr);
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if (result) {
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kfree(table_attr);
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return result;
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} else
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list_add_tail(&table_attr->node,
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&acpi_table_attr_list);
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}
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} while (!result);
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2007-12-18 02:54:39 +07:00
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kobject_uevent(tables_kobj, KOBJ_ADD);
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ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
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return 0;
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}
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2008-02-06 13:26:55 +07:00
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/*
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* Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/
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* See Documentation/ABI/testing/sysfs-firmware-acpi
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*/
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#define COUNT_GPE 0
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#define COUNT_SCI 1 /* acpi_irq_handled */
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#define COUNT_ERROR 2 /* other */
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#define NUM_COUNTERS_EXTRA 3
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static u32 *all_counters;
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static u32 num_gpes;
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static u32 num_counters;
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static struct attribute **all_attrs;
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static u32 acpi_gpe_count;
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static struct attribute_group interrupt_stats_attr_group = {
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.name = "interrupts",
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};
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static struct kobj_attribute *counter_attrs;
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static int count_num_gpes(void)
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{
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int count = 0;
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struct acpi_gpe_xrupt_info *gpe_xrupt_info;
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struct acpi_gpe_block_info *gpe_block;
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acpi_cpu_flags flags;
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flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
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gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
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while (gpe_xrupt_info) {
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gpe_block = gpe_xrupt_info->gpe_block_list_head;
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while (gpe_block) {
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count += gpe_block->register_count *
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ACPI_GPE_REGISTER_WIDTH;
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gpe_block = gpe_block->next;
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}
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gpe_xrupt_info = gpe_xrupt_info->next;
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}
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acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
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return count;
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}
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static void delete_gpe_attr_array(void)
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{
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u32 *tmp = all_counters;
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all_counters = NULL;
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kfree(tmp);
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if (counter_attrs) {
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int i;
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for (i = 0; i < num_gpes; i++)
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kfree(counter_attrs[i].attr.name);
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kfree(counter_attrs);
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}
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kfree(all_attrs);
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return;
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}
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void acpi_os_gpe_count(u32 gpe_number)
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{
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acpi_gpe_count++;
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if (!all_counters)
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return;
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if (gpe_number < num_gpes)
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all_counters[gpe_number]++;
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else
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all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]++;
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return;
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}
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void acpi_os_fixed_event_count(u32 event_number)
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|
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{
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if (!all_counters)
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|
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return;
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if (event_number < ACPI_NUM_FIXED_EVENTS)
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|
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all_counters[num_gpes + event_number]++;
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else
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all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]++;
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return;
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}
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|
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static ssize_t counter_show(struct kobject *kobj,
|
|
|
|
struct kobj_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI] =
|
|
|
|
acpi_irq_handled;
|
|
|
|
all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE] =
|
|
|
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acpi_gpe_count;
|
|
|
|
|
|
|
|
return sprintf(buf, "%d\n", all_counters[attr - counter_attrs]);
|
|
|
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}
|
|
|
|
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|
|
|
/*
|
|
|
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* counter_set() sets the specified counter.
|
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|
|
* setting the total "sci" file to any value clears all counters.
|
|
|
|
*/
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|
|
|
static ssize_t counter_set(struct kobject *kobj,
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|
|
|
struct kobj_attribute *attr, const char *buf, size_t size)
|
|
|
|
{
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|
|
int index = attr - counter_attrs;
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|
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if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
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int i;
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for (i = 0; i < num_counters; ++i)
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all_counters[i] = 0;
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acpi_gpe_count = 0;
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acpi_irq_handled = 0;
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} else
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all_counters[index] = strtoul(buf, NULL, 0);
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return size;
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}
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|
void acpi_irq_stats_init(void)
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{
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int i;
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if (all_counters)
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return;
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num_gpes = count_num_gpes();
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|
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num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
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all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
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GFP_KERNEL);
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if (all_attrs == NULL)
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return;
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all_counters = kzalloc(sizeof(u32) * (num_counters), GFP_KERNEL);
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if (all_counters == NULL)
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goto fail;
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counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
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GFP_KERNEL);
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|
|
if (counter_attrs == NULL)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
for (i = 0; i < num_counters; ++i) {
|
2008-03-11 22:44:26 +07:00
|
|
|
char buffer[12];
|
2008-02-06 13:26:55 +07:00
|
|
|
char *name;
|
|
|
|
|
|
|
|
if (i < num_gpes)
|
|
|
|
sprintf(buffer, "gpe%02X", i);
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_PMTIMER)
|
|
|
|
sprintf(buffer, "ff_pmtimer");
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_GLOBAL)
|
|
|
|
sprintf(buffer, "ff_gbl_lock");
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
|
|
|
|
sprintf(buffer, "ff_pwr_btn");
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
|
|
|
|
sprintf(buffer, "ff_slp_btn");
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_RTC)
|
|
|
|
sprintf(buffer, "ff_rt_clk");
|
|
|
|
else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
|
|
|
|
sprintf(buffer, "gpe_all");
|
|
|
|
else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
|
|
|
|
sprintf(buffer, "sci");
|
|
|
|
else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
|
|
|
|
sprintf(buffer, "error");
|
|
|
|
else
|
|
|
|
sprintf(buffer, "bug%02X", i);
|
|
|
|
|
|
|
|
name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
|
|
|
|
if (name == NULL)
|
|
|
|
goto fail;
|
|
|
|
strncpy(name, buffer, strlen(buffer) + 1);
|
|
|
|
|
|
|
|
counter_attrs[i].attr.name = name;
|
|
|
|
counter_attrs[i].attr.mode = 0644;
|
|
|
|
counter_attrs[i].show = counter_show;
|
|
|
|
counter_attrs[i].store = counter_set;
|
|
|
|
|
|
|
|
all_attrs[i] = &counter_attrs[i].attr;
|
|
|
|
}
|
|
|
|
|
|
|
|
interrupt_stats_attr_group.attrs = all_attrs;
|
2008-02-07 16:24:01 +07:00
|
|
|
if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
|
|
|
|
return;
|
2008-02-06 13:26:55 +07:00
|
|
|
|
|
|
|
fail:
|
|
|
|
delete_gpe_attr_array();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit interrupt_stats_exit(void)
|
|
|
|
{
|
|
|
|
sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
|
|
|
|
|
|
|
|
delete_gpe_attr_array();
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
/* --------------------------------------------------------------------------
|
|
|
|
FS Interface (/proc)
|
|
|
|
-------------------------------------------------------------------------- */
|
2007-01-29 10:02:42 +07:00
|
|
|
#ifdef CONFIG_ACPI_PROCFS
|
ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
|
|
|
#define ACPI_SYSTEM_FILE_INFO "info"
|
|
|
|
#define ACPI_SYSTEM_FILE_EVENT "event"
|
|
|
|
#define ACPI_SYSTEM_FILE_DSDT "dsdt"
|
|
|
|
#define ACPI_SYSTEM_FILE_FADT "fadt"
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
static int acpi_system_read_info(struct seq_file *seq, void *offset)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
|
|
|
|
seq_printf(seq, "version: %x\n", ACPI_CA_VERSION);
|
2006-06-27 11:41:40 +07:00
|
|
|
return 0;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
static int acpi_system_info_open_fs(struct inode *inode, struct file *file)
|
|
|
|
{
|
|
|
|
return single_open(file, acpi_system_read_info, PDE(inode)->data);
|
|
|
|
}
|
|
|
|
|
2006-07-05 00:06:00 +07:00
|
|
|
static const struct file_operations acpi_system_info_ops = {
|
2005-08-05 11:44:28 +07:00
|
|
|
.open = acpi_system_info_open_fs,
|
|
|
|
.read = seq_read,
|
|
|
|
.llseek = seq_lseek,
|
|
|
|
.release = single_release,
|
2005-04-17 05:20:36 +07:00
|
|
|
};
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t,
|
|
|
|
loff_t *);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2006-07-05 00:06:00 +07:00
|
|
|
static const struct file_operations acpi_system_dsdt_ops = {
|
2005-08-05 11:44:28 +07:00
|
|
|
.read = acpi_system_read_dsdt,
|
2005-04-17 05:20:36 +07:00
|
|
|
};
|
|
|
|
|
|
|
|
static ssize_t
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_system_read_dsdt(struct file *file,
|
|
|
|
char __user * buffer, size_t count, loff_t * ppos)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_status status = AE_OK;
|
2007-02-02 23:48:19 +07:00
|
|
|
struct acpi_table_header *dsdt = NULL;
|
2005-08-05 11:44:28 +07:00
|
|
|
ssize_t res;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2007-02-02 23:48:19 +07:00
|
|
|
status = acpi_get_table(ACPI_SIG_DSDT, 1, &dsdt);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (ACPI_FAILURE(status))
|
2006-06-27 11:41:40 +07:00
|
|
|
return -ENODEV;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
|
|
|
res = simple_read_from_buffer(buffer, count, ppos, dsdt, dsdt->length);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2006-06-27 11:41:40 +07:00
|
|
|
return res;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
static ssize_t acpi_system_read_fadt(struct file *, char __user *, size_t,
|
|
|
|
loff_t *);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2006-07-05 00:06:00 +07:00
|
|
|
static const struct file_operations acpi_system_fadt_ops = {
|
2005-08-05 11:44:28 +07:00
|
|
|
.read = acpi_system_read_fadt,
|
2005-04-17 05:20:36 +07:00
|
|
|
};
|
|
|
|
|
|
|
|
static ssize_t
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_system_read_fadt(struct file *file,
|
|
|
|
char __user * buffer, size_t count, loff_t * ppos)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_status status = AE_OK;
|
2007-02-02 23:48:19 +07:00
|
|
|
struct acpi_table_header *fadt = NULL;
|
2005-08-05 11:44:28 +07:00
|
|
|
ssize_t res;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2007-02-02 23:48:19 +07:00
|
|
|
status = acpi_get_table(ACPI_SIG_FADT, 1, &fadt);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (ACPI_FAILURE(status))
|
2006-06-27 11:41:40 +07:00
|
|
|
return -ENODEV;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
|
|
|
res = simple_read_from_buffer(buffer, count, ppos, fadt, fadt->length);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2006-06-27 11:41:40 +07:00
|
|
|
return res;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
|
|
|
static int acpi_system_procfs_init(void)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
2005-08-05 11:44:28 +07:00
|
|
|
struct proc_dir_entry *entry;
|
2005-04-17 05:20:36 +07:00
|
|
|
int error = 0;
|
2005-08-05 11:44:28 +07:00
|
|
|
char *name;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
/* 'info' [R] */
|
|
|
|
name = ACPI_SYSTEM_FILE_INFO;
|
2005-08-05 11:44:28 +07:00
|
|
|
entry = create_proc_entry(name, S_IRUGO, acpi_root_dir);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (!entry)
|
|
|
|
goto Error;
|
|
|
|
else {
|
|
|
|
entry->proc_fops = &acpi_system_info_ops;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 'dsdt' [R] */
|
|
|
|
name = ACPI_SYSTEM_FILE_DSDT;
|
|
|
|
entry = create_proc_entry(name, S_IRUSR, acpi_root_dir);
|
|
|
|
if (entry)
|
|
|
|
entry->proc_fops = &acpi_system_dsdt_ops;
|
2005-08-05 11:44:28 +07:00
|
|
|
else
|
2005-04-17 05:20:36 +07:00
|
|
|
goto Error;
|
|
|
|
|
|
|
|
/* 'fadt' [R] */
|
|
|
|
name = ACPI_SYSTEM_FILE_FADT;
|
|
|
|
entry = create_proc_entry(name, S_IRUSR, acpi_root_dir);
|
|
|
|
if (entry)
|
|
|
|
entry->proc_fops = &acpi_system_fadt_ops;
|
|
|
|
else
|
|
|
|
goto Error;
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
Done:
|
2006-06-27 11:41:40 +07:00
|
|
|
return error;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
Error:
|
2005-04-17 05:20:36 +07:00
|
|
|
remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir);
|
|
|
|
remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir);
|
|
|
|
remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir);
|
|
|
|
|
|
|
|
error = -EFAULT;
|
|
|
|
goto Done;
|
|
|
|
}
|
ACPI: Populate /sys/firmware/acpi/tables/
The file name is the signature, such as DSDT,
and the contents are the binary table image.
Some tables, such as the SSDT, can have multiple instances.
If just one, the file is SSDT, but if 3 instances,
for example, it will be SSDT1, SSDT2, SSDT3
All static tables (besides teh RSDP and RSDT themselves
are exported. Dynamic tables, such as SSDT op-regions that
are not declared in the RSDT, will be added in a subsequent patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-06-14 16:43:07 +07:00
|
|
|
#else
|
|
|
|
static int acpi_system_procfs_init(void)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static int __init acpi_system_init(void)
|
|
|
|
{
|
|
|
|
int result = 0;
|
|
|
|
|
|
|
|
if (acpi_disabled)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
result = acpi_system_procfs_init();
|
|
|
|
if (result)
|
|
|
|
return result;
|
|
|
|
|
|
|
|
result = acpi_system_sysfs_init();
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
subsys_initcall(acpi_system_init);
|