diff options
Diffstat (limited to 'drivers/acpi/system.c')
| -rw-r--r-- | drivers/acpi/system.c | 639 |
1 files changed, 0 insertions, 639 deletions
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c deleted file mode 100644 index f8db50a0941c..000000000000 --- a/drivers/acpi/system.c +++ /dev/null @@ -1,639 +0,0 @@ -/* - * acpi_system.c - ACPI System Driver ($Revision: 63 $) - * - * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> - * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ - -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/string.h> -#include <asm/uaccess.h> - -#include <acpi/acpi_drivers.h> - -#define PREFIX "ACPI: " - -#define _COMPONENT ACPI_SYSTEM_COMPONENT -ACPI_MODULE_NAME("system"); - -#define ACPI_SYSTEM_CLASS "system" -#define ACPI_SYSTEM_DEVICE_NAME "System" - -u32 acpi_irq_handled; -u32 acpi_irq_not_handled; - -/* - * Make ACPICA version work as module param - */ -static int param_get_acpica_version(char *buffer, struct kernel_param *kp) -{ - int result; - - result = sprintf(buffer, "%x", ACPI_CA_VERSION); - - return result; -} - -module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444); - -/* -------------------------------------------------------------------------- - FS Interface (/sys) - -------------------------------------------------------------------------- */ -static LIST_HEAD(acpi_table_attr_list); -static struct kobject *tables_kobj; -static struct kobject *dynamic_tables_kobj; - -struct acpi_table_attr { - struct bin_attribute attr; - char name[8]; - int instance; - struct list_head node; -}; - -static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, char *buf, - loff_t offset, size_t count) -{ - struct acpi_table_attr *table_attr = - container_of(bin_attr, struct acpi_table_attr, attr); - struct acpi_table_header *table_header = NULL; - acpi_status status; - char name[ACPI_NAME_SIZE]; - - if (strncmp(table_attr->name, "NULL", 4)) - memcpy(name, table_attr->name, ACPI_NAME_SIZE); - else - memcpy(name, "\0\0\0\0", 4); - - status = - acpi_get_table(name, table_attr->instance, - &table_header); - if (ACPI_FAILURE(status)) - return -ENODEV; - - return memory_read_from_buffer(buf, count, &offset, - table_header, table_header->length); -} - -static void acpi_table_attr_init(struct acpi_table_attr *table_attr, - struct acpi_table_header *table_header) -{ - struct acpi_table_header *header = NULL; - struct acpi_table_attr *attr = NULL; - - sysfs_attr_init(&table_attr->attr.attr); - if (table_header->signature[0] != '\0') - memcpy(table_attr->name, table_header->signature, - ACPI_NAME_SIZE); - else - memcpy(table_attr->name, "NULL", 4); - - list_for_each_entry(attr, &acpi_table_attr_list, node) { - if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE)) - if (table_attr->instance < attr->instance) - table_attr->instance = attr->instance; - } - table_attr->instance++; - - if (table_attr->instance > 1 || (table_attr->instance == 1 && - !acpi_get_table - (table_header->signature, 2, &header))) - sprintf(table_attr->name + ACPI_NAME_SIZE, "%d", - table_attr->instance); - - table_attr->attr.size = 0; - table_attr->attr.read = acpi_table_show; - table_attr->attr.attr.name = table_attr->name; - table_attr->attr.attr.mode = 0400; - - return; -} - -static acpi_status -acpi_sysfs_table_handler(u32 event, void *table, void *context) -{ - struct acpi_table_attr *table_attr; - - switch (event) { - case ACPI_TABLE_EVENT_LOAD: - table_attr = - kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); - if (!table_attr) - return AE_NO_MEMORY; - - acpi_table_attr_init(table_attr, table); - if (sysfs_create_bin_file(dynamic_tables_kobj, - &table_attr->attr)) { - kfree(table_attr); - return AE_ERROR; - } else - list_add_tail(&table_attr->node, - &acpi_table_attr_list); - break; - case ACPI_TABLE_EVENT_UNLOAD: - /* - * we do not need to do anything right now - * because the table is not deleted from the - * global table list when unloading it. - */ - break; - default: - return AE_BAD_PARAMETER; - } - return AE_OK; -} - -static int acpi_system_sysfs_init(void) -{ - struct acpi_table_attr *table_attr; - struct acpi_table_header *table_header = NULL; - int table_index = 0; - int result; - - tables_kobj = kobject_create_and_add("tables", acpi_kobj); - if (!tables_kobj) - goto err; - - dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj); - if (!dynamic_tables_kobj) - goto err_dynamic_tables; - - do { - result = acpi_get_table_by_index(table_index, &table_header); - if (!result) { - table_index++; - table_attr = NULL; - table_attr = - kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); - if (!table_attr) - return -ENOMEM; - - acpi_table_attr_init(table_attr, table_header); - result = - sysfs_create_bin_file(tables_kobj, - &table_attr->attr); - if (result) { - kfree(table_attr); - return result; - } else - list_add_tail(&table_attr->node, - &acpi_table_attr_list); - } - } while (!result); - kobject_uevent(tables_kobj, KOBJ_ADD); - kobject_uevent(dynamic_tables_kobj, KOBJ_ADD); - result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL); - - return result == AE_OK ? 0 : -EINVAL; -err_dynamic_tables: - kobject_put(tables_kobj); -err: - return -ENOMEM; -} - -/* - * Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/ - * See Documentation/ABI/testing/sysfs-firmware-acpi - */ - -#define COUNT_GPE 0 -#define COUNT_SCI 1 /* acpi_irq_handled */ -#define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */ -#define COUNT_ERROR 3 /* other */ -#define NUM_COUNTERS_EXTRA 4 - -struct event_counter { - u32 count; - u32 flags; -}; - -static struct event_counter *all_counters; -static u32 num_gpes; -static u32 num_counters; -static struct attribute **all_attrs; -static u32 acpi_gpe_count; - -static struct attribute_group interrupt_stats_attr_group = { - .name = "interrupts", -}; -static struct kobj_attribute *counter_attrs; - -static void delete_gpe_attr_array(void) -{ - struct event_counter *tmp = all_counters; - - all_counters = NULL; - kfree(tmp); - - if (counter_attrs) { - int i; - - for (i = 0; i < num_gpes; i++) - kfree(counter_attrs[i].attr.name); - - kfree(counter_attrs); - } - kfree(all_attrs); - - return; -} - -void acpi_os_gpe_count(u32 gpe_number) -{ - acpi_gpe_count++; - - if (!all_counters) - return; - - if (gpe_number < num_gpes) - all_counters[gpe_number].count++; - else - all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]. - count++; - - return; -} - -void acpi_os_fixed_event_count(u32 event_number) -{ - if (!all_counters) - return; - - if (event_number < ACPI_NUM_FIXED_EVENTS) - all_counters[num_gpes + event_number].count++; - else - all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]. - count++; - - return; -} - -static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle) -{ - int result = 0; - - if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) - goto end; - - if (index < num_gpes) { - result = acpi_get_gpe_device(index, handle); - if (result) { - ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND, - "Invalid GPE 0x%x\n", index)); - goto end; - } - result = acpi_get_gpe_status(*handle, index, status); - } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS)) - result = acpi_get_event_status(index - num_gpes, status); - -end: - return result; -} - -static ssize_t counter_show(struct kobject *kobj, - struct kobj_attribute *attr, char *buf) -{ - int index = attr - counter_attrs; - int size; - acpi_handle handle; - acpi_event_status status; - int result = 0; - - all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count = - acpi_irq_handled; - all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count = - acpi_irq_not_handled; - all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count = - acpi_gpe_count; - - size = sprintf(buf, "%8d", all_counters[index].count); - - /* "gpe_all" or "sci" */ - if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) - goto end; - - result = get_status(index, &status, &handle); - if (result) - goto end; - - if (!(status & ACPI_EVENT_FLAG_HANDLE)) - size += sprintf(buf + size, " invalid"); - else if (status & ACPI_EVENT_FLAG_ENABLED) - size += sprintf(buf + size, " enabled"); - else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED) - size += sprintf(buf + size, " wake_enabled"); - else - size += sprintf(buf + size, " disabled"); - -end: - size += sprintf(buf + size, "\n"); - return result ? result : size; -} - -/* - * counter_set() sets the specified counter. - * setting the total "sci" file to any value clears all counters. - * enable/disable/clear a gpe/fixed event in user space. - */ -static ssize_t counter_set(struct kobject *kobj, - struct kobj_attribute *attr, const char *buf, size_t size) -{ - int index = attr - counter_attrs; - acpi_event_status status; - acpi_handle handle; - int result = 0; - - if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) { - int i; - for (i = 0; i < num_counters; ++i) - all_counters[i].count = 0; - acpi_gpe_count = 0; - acpi_irq_handled = 0; - acpi_irq_not_handled = 0; - goto end; - } - - /* show the event status for both GPEs and Fixed Events */ - result = get_status(index, &status, &handle); - if (result) - goto end; - - if (!(status & ACPI_EVENT_FLAG_HANDLE)) { - printk(KERN_WARNING PREFIX - "Can not change Invalid GPE/Fixed Event status\n"); - return -EINVAL; - } - - if (index < num_gpes) { - if (!strcmp(buf, "disable\n") && - (status & ACPI_EVENT_FLAG_ENABLED)) - result = acpi_disable_gpe(handle, index, - ACPI_GPE_TYPE_RUNTIME); - else if (!strcmp(buf, "enable\n") && - !(status & ACPI_EVENT_FLAG_ENABLED)) - result = acpi_enable_gpe(handle, index, - ACPI_GPE_TYPE_RUNTIME); - else if (!strcmp(buf, "clear\n") && - (status & ACPI_EVENT_FLAG_SET)) - result = acpi_clear_gpe(handle, index); - else - all_counters[index].count = strtoul(buf, NULL, 0); - } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) { - int event = index - num_gpes; - if (!strcmp(buf, "disable\n") && - (status & ACPI_EVENT_FLAG_ENABLED)) - result = acpi_disable_event(event, ACPI_NOT_ISR); - else if (!strcmp(buf, "enable\n") && - !(status & ACPI_EVENT_FLAG_ENABLED)) - result = acpi_enable_event(event, ACPI_NOT_ISR); - else if (!strcmp(buf, "clear\n") && - (status & ACPI_EVENT_FLAG_SET)) - result = acpi_clear_event(event); - else - all_counters[index].count = strtoul(buf, NULL, 0); - } else - all_counters[index].count = strtoul(buf, NULL, 0); - - if (ACPI_FAILURE(result)) - result = -EINVAL; -end: - return result ? result : size; -} - -void acpi_irq_stats_init(void) -{ - int i; - - if (all_counters) - return; - - num_gpes = acpi_current_gpe_count; - num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA; - - all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1), - GFP_KERNEL); - if (all_attrs == NULL) - return; - - all_counters = kzalloc(sizeof(struct event_counter) * (num_counters), - GFP_KERNEL); - if (all_counters == NULL) - goto fail; - - counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters), - GFP_KERNEL); - if (counter_attrs == NULL) - goto fail; - - for (i = 0; i < num_counters; ++i) { - char buffer[12]; - 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_SCI_NOT) - sprintf(buffer, "sci_not"); - 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); - - sysfs_attr_init(&counter_attrs[i].attr); - 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; - if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group)) - return; - -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; -} - -/* -------------------------------------------------------------------------- - FS Interface (/proc) - -------------------------------------------------------------------------- */ -#ifdef CONFIG_ACPI_PROCFS -#define ACPI_SYSTEM_FILE_INFO "info" -#define ACPI_SYSTEM_FILE_EVENT "event" -#define ACPI_SYSTEM_FILE_DSDT "dsdt" -#define ACPI_SYSTEM_FILE_FADT "fadt" - -static int acpi_system_read_info(struct seq_file *seq, void *offset) -{ - - seq_printf(seq, "version: %x\n", ACPI_CA_VERSION); - return 0; -} - -static int acpi_system_info_open_fs(struct inode *inode, struct file *file) -{ - return single_open(file, acpi_system_read_info, PDE(inode)->data); -} - -static const struct file_operations acpi_system_info_ops = { - .owner = THIS_MODULE, - .open = acpi_system_info_open_fs, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t, - loff_t *); - -static const struct file_operations acpi_system_dsdt_ops = { - .owner = THIS_MODULE, - .read = acpi_system_read_dsdt, -}; - -static ssize_t -acpi_system_read_dsdt(struct file *file, - char __user * buffer, size_t count, loff_t * ppos) -{ - acpi_status status = AE_OK; - struct acpi_table_header *dsdt = NULL; - ssize_t res; - - status = acpi_get_table(ACPI_SIG_DSDT, 1, &dsdt); - if (ACPI_FAILURE(status)) - return -ENODEV; - - res = simple_read_from_buffer(buffer, count, ppos, dsdt, dsdt->length); - - return res; -} - -static ssize_t acpi_system_read_fadt(struct file *, char __user *, size_t, - loff_t *); - -static const struct file_operations acpi_system_fadt_ops = { - .owner = THIS_MODULE, - .read = acpi_system_read_fadt, -}; - -static ssize_t -acpi_system_read_fadt(struct file *file, - char __user * buffer, size_t count, loff_t * ppos) -{ - acpi_status status = AE_OK; - struct acpi_table_header *fadt = NULL; - ssize_t res; - - status = acpi_get_table(ACPI_SIG_FADT, 1, &fadt); - if (ACPI_FAILURE(status)) - return -ENODEV; - - res = simple_read_from_buffer(buffer, count, ppos, fadt, fadt->length); - - return res; -} - -static int acpi_system_procfs_init(void) -{ - struct proc_dir_entry *entry; - int error = 0; - - /* 'info' [R] */ - entry = proc_create(ACPI_SYSTEM_FILE_INFO, S_IRUGO, acpi_root_dir, - &acpi_system_info_ops); - if (!entry) - goto Error; - - /* 'dsdt' [R] */ - entry = proc_create(ACPI_SYSTEM_FILE_DSDT, S_IRUSR, acpi_root_dir, - &acpi_system_dsdt_ops); - if (!entry) - goto Error; - - /* 'fadt' [R] */ - entry = proc_create(ACPI_SYSTEM_FILE_FADT, S_IRUSR, acpi_root_dir, - &acpi_system_fadt_ops); - if (!entry) - goto Error; - - Done: - return error; - - Error: - 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; -} -#else -static int acpi_system_procfs_init(void) -{ - return 0; -} -#endif - -int __init acpi_system_init(void) -{ - int result; - - result = acpi_system_procfs_init(); - if (result) - return result; - - result = acpi_system_sysfs_init(); - - return result; -} |