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Diffstat (limited to 'cleopatre/linux-2.6.25.10-spc300/drivers/acpi/system.c')
-rw-r--r--cleopatre/linux-2.6.25.10-spc300/drivers/acpi/system.c518
1 files changed, 518 insertions, 0 deletions
diff --git a/cleopatre/linux-2.6.25.10-spc300/drivers/acpi/system.c b/cleopatre/linux-2.6.25.10-spc300/drivers/acpi/system.c
new file mode 100644
index 0000000000..4749f379a9
--- /dev/null
+++ b/cleopatre/linux-2.6.25.10-spc300/drivers/acpi/system.c
@@ -0,0 +1,518 @@
+/*
+ * 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/init.h>
+#include <asm/uaccess.h>
+
+#include <acpi/acpi_drivers.h>
+
+#define _COMPONENT ACPI_SYSTEM_COMPONENT
+ACPI_MODULE_NAME("system");
+#ifdef MODULE_PARAM_PREFIX
+#undef MODULE_PARAM_PREFIX
+#endif
+#define MODULE_PARAM_PREFIX "acpi."
+
+#define ACPI_SYSTEM_CLASS "system"
+#define ACPI_SYSTEM_DEVICE_NAME "System"
+
+u32 acpi_irq_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;
+
+struct acpi_table_attr {
+ struct bin_attribute attr;
+ char name[8];
+ int instance;
+ struct list_head node;
+};
+
+static ssize_t acpi_table_show(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;
+ ssize_t ret_count = count;
+
+ status =
+ acpi_get_table(table_attr->name, table_attr->instance,
+ &table_header);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ if (offset >= table_header->length) {
+ ret_count = 0;
+ goto end;
+ }
+
+ if (offset + ret_count > table_header->length)
+ ret_count = table_header->length - offset;
+
+ memcpy(buf, ((char *)table_header) + offset, ret_count);
+
+ end:
+ return ret_count;
+}
+
+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;
+
+ memcpy(table_attr->name, table_header->signature, ACPI_NAME_SIZE);
+
+ list_for_each_entry(attr, &acpi_table_attr_list, node) {
+ if (!memcmp(table_header->signature, 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 + 4, "%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 = 0444;
+ table_attr->attr.attr.owner = THIS_MODULE;
+
+ return;
+}
+
+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)
+ return -ENOMEM;
+
+ 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);
+
+ return 0;
+}
+
+/*
+ * 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_ERROR 2 /* other */
+#define NUM_COUNTERS_EXTRA 3
+
+static u32 *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 int count_num_gpes(void)
+{
+ int count = 0;
+ struct acpi_gpe_xrupt_info *gpe_xrupt_info;
+ struct acpi_gpe_block_info *gpe_block;
+ acpi_cpu_flags flags;
+
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
+ gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
+ while (gpe_xrupt_info) {
+ gpe_block = gpe_xrupt_info->gpe_block_list_head;
+ while (gpe_block) {
+ count += gpe_block->register_count *
+ ACPI_GPE_REGISTER_WIDTH;
+ gpe_block = gpe_block->next;
+ }
+ gpe_xrupt_info = gpe_xrupt_info->next;
+ }
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+
+ return count;
+}
+
+static void delete_gpe_attr_array(void)
+{
+ u32 *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]++;
+ else
+ all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]++;
+
+ 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]++;
+ else
+ all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]++;
+
+ return;
+}
+
+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] =
+ acpi_gpe_count;
+
+ return sprintf(buf, "%d\n", all_counters[attr - counter_attrs]);
+}
+
+/*
+ * counter_set() sets the specified counter.
+ * setting the total "sci" file to any value clears all counters.
+ */
+static ssize_t counter_set(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t size)
+{
+ int index = attr - counter_attrs;
+
+ if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
+ int i;
+ for (i = 0; i < num_counters; ++i)
+ all_counters[i] = 0;
+ acpi_gpe_count = 0;
+ acpi_irq_handled = 0;
+
+ } else
+ all_counters[index] = strtoul(buf, NULL, 0);
+
+ return size;
+}
+
+void acpi_irq_stats_init(void)
+{
+ int i;
+
+ if (all_counters)
+ return;
+
+ num_gpes = count_num_gpes();
+ 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(u32) * (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_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;
+ 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 = {
+ .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 = {
+ .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 = {
+ .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;
+ char *name;
+
+ /* 'info' [R] */
+ name = ACPI_SYSTEM_FILE_INFO;
+ entry = create_proc_entry(name, S_IRUGO, acpi_root_dir);
+ 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;
+ else
+ 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;
+
+ 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
+
+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;
+}
+
+subsys_initcall(acpi_system_init);