[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/drivers/acpi/bus.c b/ap/os/linux/linux-3.4.x/drivers/acpi/bus.c
new file mode 100644
index 0000000..06d2d22
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/acpi/bus.c
@@ -0,0 +1,1070 @@
+/*
+ * acpi_bus.c - ACPI Bus Driver ($Revision: 80 $)
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/sched.h>
+#include <linux/pm.h>
+#include <linux/device.h>
+#include <linux/proc_fs.h>
+#include <linux/acpi.h>
+#include <linux/slab.h>
+#include <linux/regulator/machine.h>
+#ifdef CONFIG_X86
+#include <asm/mpspec.h>
+#endif
+#include <linux/pci.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+#include <acpi/apei.h>
+#include <linux/dmi.h>
+#include <linux/suspend.h>
+
+#include "internal.h"
+
+#define _COMPONENT ACPI_BUS_COMPONENT
+ACPI_MODULE_NAME("bus");
+
+struct acpi_device *acpi_root;
+struct proc_dir_entry *acpi_root_dir;
+EXPORT_SYMBOL(acpi_root_dir);
+
+#define STRUCT_TO_INT(s) (*((int*)&s))
+
+
+#ifdef CONFIG_X86
+#ifdef CONFIG_ACPI_CUSTOM_DSDT
+static inline int set_copy_dsdt(const struct dmi_system_id *id)
+{
+ return 0;
+}
+#else
+static int set_copy_dsdt(const struct dmi_system_id *id)
+{
+ printk(KERN_NOTICE "%s detected - "
+ "force copy of DSDT to local memory\n", id->ident);
+ acpi_gbl_copy_dsdt_locally = 1;
+ return 0;
+}
+#endif
+
+static struct dmi_system_id dsdt_dmi_table[] __initdata = {
+ /*
+ * Invoke DSDT corruption work-around on all Toshiba Satellite.
+ * https://bugzilla.kernel.org/show_bug.cgi?id=14679
+ */
+ {
+ .callback = set_copy_dsdt,
+ .ident = "TOSHIBA Satellite",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
+ },
+ },
+ {}
+};
+#else
+static struct dmi_system_id dsdt_dmi_table[] __initdata = {
+ {}
+};
+#endif
+
+/* --------------------------------------------------------------------------
+ Device Management
+ -------------------------------------------------------------------------- */
+
+int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
+{
+ acpi_status status = AE_OK;
+
+
+ if (!device)
+ return -EINVAL;
+
+ /* TBD: Support fixed-feature devices */
+
+ status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
+ if (ACPI_FAILURE(status) || !*device) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
+ handle));
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+EXPORT_SYMBOL(acpi_bus_get_device);
+
+acpi_status acpi_bus_get_status_handle(acpi_handle handle,
+ unsigned long long *sta)
+{
+ acpi_status status;
+
+ status = acpi_evaluate_integer(handle, "_STA", NULL, sta);
+ if (ACPI_SUCCESS(status))
+ return AE_OK;
+
+ if (status == AE_NOT_FOUND) {
+ *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED |
+ ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING;
+ return AE_OK;
+ }
+ return status;
+}
+
+int acpi_bus_get_status(struct acpi_device *device)
+{
+ acpi_status status;
+ unsigned long long sta;
+
+ status = acpi_bus_get_status_handle(device->handle, &sta);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ STRUCT_TO_INT(device->status) = (int) sta;
+
+ if (device->status.functional && !device->status.present) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: "
+ "functional but not present;\n",
+ device->pnp.bus_id,
+ (u32) STRUCT_TO_INT(device->status)));
+ }
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n",
+ device->pnp.bus_id,
+ (u32) STRUCT_TO_INT(device->status)));
+ return 0;
+}
+EXPORT_SYMBOL(acpi_bus_get_status);
+
+void acpi_bus_private_data_handler(acpi_handle handle,
+ void *context)
+{
+ return;
+}
+EXPORT_SYMBOL(acpi_bus_private_data_handler);
+
+int acpi_bus_get_private_data(acpi_handle handle, void **data)
+{
+ acpi_status status = AE_OK;
+
+ if (!*data)
+ return -EINVAL;
+
+ status = acpi_get_data(handle, acpi_bus_private_data_handler, data);
+ if (ACPI_FAILURE(status) || !*data) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
+ handle));
+ return -ENODEV;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(acpi_bus_get_private_data);
+
+/* --------------------------------------------------------------------------
+ Power Management
+ -------------------------------------------------------------------------- */
+
+static int __acpi_bus_get_power(struct acpi_device *device, int *state)
+{
+ int result = 0;
+ acpi_status status = 0;
+ unsigned long long psc = 0;
+
+ if (!device || !state)
+ return -EINVAL;
+
+ *state = ACPI_STATE_UNKNOWN;
+
+ if (device->flags.power_manageable) {
+ /*
+ * Get the device's power state either directly (via _PSC) or
+ * indirectly (via power resources).
+ */
+ if (device->power.flags.power_resources) {
+ result = acpi_power_get_inferred_state(device, state);
+ if (result)
+ return result;
+ } else if (device->power.flags.explicit_get) {
+ status = acpi_evaluate_integer(device->handle, "_PSC",
+ NULL, &psc);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+ *state = (int)psc;
+ }
+ } else {
+ /* TBD: Non-recursive algorithm for walking up hierarchy. */
+ *state = device->parent ?
+ device->parent->power.state : ACPI_STATE_D0;
+ }
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n",
+ device->pnp.bus_id, *state));
+
+ return 0;
+}
+
+
+static int __acpi_bus_set_power(struct acpi_device *device, int state)
+{
+ int result = 0;
+ acpi_status status = AE_OK;
+ char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' };
+
+ if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD))
+ return -EINVAL;
+
+ /* Make sure this is a valid target state */
+
+ if (state == device->power.state) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
+ state));
+ return 0;
+ }
+
+ if (!device->power.states[state].flags.valid) {
+ printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);
+ return -ENODEV;
+ }
+ if (device->parent && (state < device->parent->power.state)) {
+ printk(KERN_WARNING PREFIX
+ "Cannot set device to a higher-powered"
+ " state than parent\n");
+ return -ENODEV;
+ }
+
+ /* For D3cold we should execute _PS3, not _PS4. */
+ if (state == ACPI_STATE_D3_COLD)
+ object_name[3] = '3';
+
+ /*
+ * Transition Power
+ * ----------------
+ * On transitions to a high-powered state we first apply power (via
+ * power resources) then evalute _PSx. Conversly for transitions to
+ * a lower-powered state.
+ */
+ if (state < device->power.state) {
+ if (device->power.flags.power_resources) {
+ result = acpi_power_transition(device, state);
+ if (result)
+ goto end;
+ }
+ if (device->power.states[state].flags.explicit_set) {
+ status = acpi_evaluate_object(device->handle,
+ object_name, NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ result = -ENODEV;
+ goto end;
+ }
+ }
+ } else {
+ if (device->power.states[state].flags.explicit_set) {
+ status = acpi_evaluate_object(device->handle,
+ object_name, NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ result = -ENODEV;
+ goto end;
+ }
+ }
+ if (device->power.flags.power_resources) {
+ result = acpi_power_transition(device, state);
+ if (result)
+ goto end;
+ }
+ }
+
+ end:
+ if (result)
+ printk(KERN_WARNING PREFIX
+ "Device [%s] failed to transition to D%d\n",
+ device->pnp.bus_id, state);
+ else {
+ device->power.state = state;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Device [%s] transitioned to D%d\n",
+ device->pnp.bus_id, state));
+ }
+
+ return result;
+}
+
+
+int acpi_bus_set_power(acpi_handle handle, int state)
+{
+ struct acpi_device *device;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ if (result)
+ return result;
+
+ if (!device->flags.power_manageable) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Device [%s] is not power manageable\n",
+ dev_name(&device->dev)));
+ return -ENODEV;
+ }
+
+ return __acpi_bus_set_power(device, state);
+}
+EXPORT_SYMBOL(acpi_bus_set_power);
+
+
+int acpi_bus_init_power(struct acpi_device *device)
+{
+ int state;
+ int result;
+
+ if (!device)
+ return -EINVAL;
+
+ device->power.state = ACPI_STATE_UNKNOWN;
+
+ result = __acpi_bus_get_power(device, &state);
+ if (result)
+ return result;
+
+ if (device->power.flags.power_resources)
+ result = acpi_power_on_resources(device, state);
+
+ if (!result)
+ device->power.state = state;
+
+ return result;
+}
+
+
+int acpi_bus_update_power(acpi_handle handle, int *state_p)
+{
+ struct acpi_device *device;
+ int state;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ if (result)
+ return result;
+
+ result = __acpi_bus_get_power(device, &state);
+ if (result)
+ return result;
+
+ result = __acpi_bus_set_power(device, state);
+ if (!result && state_p)
+ *state_p = state;
+
+ return result;
+}
+EXPORT_SYMBOL_GPL(acpi_bus_update_power);
+
+
+bool acpi_bus_power_manageable(acpi_handle handle)
+{
+ struct acpi_device *device;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ return result ? false : device->flags.power_manageable;
+}
+
+EXPORT_SYMBOL(acpi_bus_power_manageable);
+
+bool acpi_bus_can_wakeup(acpi_handle handle)
+{
+ struct acpi_device *device;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ return result ? false : device->wakeup.flags.valid;
+}
+
+EXPORT_SYMBOL(acpi_bus_can_wakeup);
+
+static void acpi_print_osc_error(acpi_handle handle,
+ struct acpi_osc_context *context, char *error)
+{
+ struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER};
+ int i;
+
+ if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer)))
+ printk(KERN_DEBUG "%s\n", error);
+ else {
+ printk(KERN_DEBUG "%s:%s\n", (char *)buffer.pointer, error);
+ kfree(buffer.pointer);
+ }
+ printk(KERN_DEBUG"_OSC request data:");
+ for (i = 0; i < context->cap.length; i += sizeof(u32))
+ printk("%x ", *((u32 *)(context->cap.pointer + i)));
+ printk("\n");
+}
+
+static acpi_status acpi_str_to_uuid(char *str, u8 *uuid)
+{
+ int i;
+ static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21,
+ 24, 26, 28, 30, 32, 34};
+
+ if (strlen(str) != 36)
+ return AE_BAD_PARAMETER;
+ for (i = 0; i < 36; i++) {
+ if (i == 8 || i == 13 || i == 18 || i == 23) {
+ if (str[i] != '-')
+ return AE_BAD_PARAMETER;
+ } else if (!isxdigit(str[i]))
+ return AE_BAD_PARAMETER;
+ }
+ for (i = 0; i < 16; i++) {
+ uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4;
+ uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]);
+ }
+ return AE_OK;
+}
+
+acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context)
+{
+ acpi_status status;
+ struct acpi_object_list input;
+ union acpi_object in_params[4];
+ union acpi_object *out_obj;
+ u8 uuid[16];
+ u32 errors;
+ struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
+
+ if (!context)
+ return AE_ERROR;
+ if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid)))
+ return AE_ERROR;
+ context->ret.length = ACPI_ALLOCATE_BUFFER;
+ context->ret.pointer = NULL;
+
+ /* Setting up input parameters */
+ input.count = 4;
+ input.pointer = in_params;
+ in_params[0].type = ACPI_TYPE_BUFFER;
+ in_params[0].buffer.length = 16;
+ in_params[0].buffer.pointer = uuid;
+ in_params[1].type = ACPI_TYPE_INTEGER;
+ in_params[1].integer.value = context->rev;
+ in_params[2].type = ACPI_TYPE_INTEGER;
+ in_params[2].integer.value = context->cap.length/sizeof(u32);
+ in_params[3].type = ACPI_TYPE_BUFFER;
+ in_params[3].buffer.length = context->cap.length;
+ in_params[3].buffer.pointer = context->cap.pointer;
+
+ status = acpi_evaluate_object(handle, "_OSC", &input, &output);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ if (!output.length)
+ return AE_NULL_OBJECT;
+
+ out_obj = output.pointer;
+ if (out_obj->type != ACPI_TYPE_BUFFER
+ || out_obj->buffer.length != context->cap.length) {
+ acpi_print_osc_error(handle, context,
+ "_OSC evaluation returned wrong type");
+ status = AE_TYPE;
+ goto out_kfree;
+ }
+ /* Need to ignore the bit0 in result code */
+ errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0);
+ if (errors) {
+ if (errors & OSC_REQUEST_ERROR)
+ acpi_print_osc_error(handle, context,
+ "_OSC request failed");
+ if (errors & OSC_INVALID_UUID_ERROR)
+ acpi_print_osc_error(handle, context,
+ "_OSC invalid UUID");
+ if (errors & OSC_INVALID_REVISION_ERROR)
+ acpi_print_osc_error(handle, context,
+ "_OSC invalid revision");
+ if (errors & OSC_CAPABILITIES_MASK_ERROR) {
+ if (((u32 *)context->cap.pointer)[OSC_QUERY_TYPE]
+ & OSC_QUERY_ENABLE)
+ goto out_success;
+ status = AE_SUPPORT;
+ goto out_kfree;
+ }
+ status = AE_ERROR;
+ goto out_kfree;
+ }
+out_success:
+ context->ret.length = out_obj->buffer.length;
+ context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL);
+ if (!context->ret.pointer) {
+ status = AE_NO_MEMORY;
+ goto out_kfree;
+ }
+ memcpy(context->ret.pointer, out_obj->buffer.pointer,
+ context->ret.length);
+ status = AE_OK;
+
+out_kfree:
+ kfree(output.pointer);
+ if (status != AE_OK)
+ context->ret.pointer = NULL;
+ return status;
+}
+EXPORT_SYMBOL(acpi_run_osc);
+
+bool osc_sb_apei_support_acked;
+static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48";
+static void acpi_bus_osc_support(void)
+{
+ u32 capbuf[2];
+ struct acpi_osc_context context = {
+ .uuid_str = sb_uuid_str,
+ .rev = 1,
+ .cap.length = 8,
+ .cap.pointer = capbuf,
+ };
+ acpi_handle handle;
+
+ capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
+ capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
+#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\
+ defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
+ capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT;
+#endif
+
+#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
+ capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT;
+#endif
+
+ if (!ghes_disable)
+ capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_APEI_SUPPORT;
+ if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
+ return;
+ if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
+ u32 *capbuf_ret = context.ret.pointer;
+ if (context.ret.length > OSC_SUPPORT_TYPE)
+ osc_sb_apei_support_acked =
+ capbuf_ret[OSC_SUPPORT_TYPE] & OSC_SB_APEI_SUPPORT;
+ kfree(context.ret.pointer);
+ }
+ /* do we need to check other returned cap? Sounds no */
+}
+
+/* --------------------------------------------------------------------------
+ Event Management
+ -------------------------------------------------------------------------- */
+
+#ifdef CONFIG_ACPI_PROC_EVENT
+static DEFINE_SPINLOCK(acpi_bus_event_lock);
+
+LIST_HEAD(acpi_bus_event_list);
+DECLARE_WAIT_QUEUE_HEAD(acpi_bus_event_queue);
+
+extern int event_is_open;
+
+int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data)
+{
+ struct acpi_bus_event *event;
+ unsigned long flags = 0;
+
+ /* drop event on the floor if no one's listening */
+ if (!event_is_open)
+ return 0;
+
+ event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
+ if (!event)
+ return -ENOMEM;
+
+ strcpy(event->device_class, device_class);
+ strcpy(event->bus_id, bus_id);
+ event->type = type;
+ event->data = data;
+
+ spin_lock_irqsave(&acpi_bus_event_lock, flags);
+ list_add_tail(&event->node, &acpi_bus_event_list);
+ spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
+
+ wake_up_interruptible(&acpi_bus_event_queue);
+
+ return 0;
+
+}
+
+EXPORT_SYMBOL_GPL(acpi_bus_generate_proc_event4);
+
+int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
+{
+ if (!device)
+ return -EINVAL;
+ return acpi_bus_generate_proc_event4(device->pnp.device_class,
+ device->pnp.bus_id, type, data);
+}
+
+EXPORT_SYMBOL(acpi_bus_generate_proc_event);
+
+int acpi_bus_receive_event(struct acpi_bus_event *event)
+{
+ unsigned long flags = 0;
+ struct acpi_bus_event *entry = NULL;
+
+ DECLARE_WAITQUEUE(wait, current);
+
+
+ if (!event)
+ return -EINVAL;
+
+ if (list_empty(&acpi_bus_event_list)) {
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue(&acpi_bus_event_queue, &wait);
+
+ if (list_empty(&acpi_bus_event_list))
+ schedule();
+
+ remove_wait_queue(&acpi_bus_event_queue, &wait);
+ set_current_state(TASK_RUNNING);
+
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ }
+
+ spin_lock_irqsave(&acpi_bus_event_lock, flags);
+ if (!list_empty(&acpi_bus_event_list)) {
+ entry = list_entry(acpi_bus_event_list.next,
+ struct acpi_bus_event, node);
+ list_del(&entry->node);
+ }
+ spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
+
+ if (!entry)
+ return -ENODEV;
+
+ memcpy(event, entry, sizeof(struct acpi_bus_event));
+
+ kfree(entry);
+
+ return 0;
+}
+
+#endif /* CONFIG_ACPI_PROC_EVENT */
+
+/* --------------------------------------------------------------------------
+ Notification Handling
+ -------------------------------------------------------------------------- */
+
+static void acpi_bus_check_device(acpi_handle handle)
+{
+ struct acpi_device *device;
+ acpi_status status;
+ struct acpi_device_status old_status;
+
+ if (acpi_bus_get_device(handle, &device))
+ return;
+ if (!device)
+ return;
+
+ old_status = device->status;
+
+ /*
+ * Make sure this device's parent is present before we go about
+ * messing with the device.
+ */
+ if (device->parent && !device->parent->status.present) {
+ device->status = device->parent->status;
+ return;
+ }
+
+ status = acpi_bus_get_status(device);
+ if (ACPI_FAILURE(status))
+ return;
+
+ if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
+ return;
+
+ /*
+ * Device Insertion/Removal
+ */
+ if ((device->status.present) && !(old_status.present)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n"));
+ /* TBD: Handle device insertion */
+ } else if (!(device->status.present) && (old_status.present)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n"));
+ /* TBD: Handle device removal */
+ }
+}
+
+static void acpi_bus_check_scope(acpi_handle handle)
+{
+ /* Status Change? */
+ acpi_bus_check_device(handle);
+
+ /*
+ * TBD: Enumerate child devices within this device's scope and
+ * run acpi_bus_check_device()'s on them.
+ */
+}
+
+static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
+int register_acpi_bus_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&acpi_bus_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(register_acpi_bus_notifier);
+
+void unregister_acpi_bus_notifier(struct notifier_block *nb)
+{
+ blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
+
+/**
+ * acpi_bus_notify
+ * ---------------
+ * Callback for all 'system-level' device notifications (values 0x00-0x7F).
+ */
+static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
+{
+ struct acpi_device *device = NULL;
+ struct acpi_driver *driver;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
+ type, handle));
+
+ blocking_notifier_call_chain(&acpi_bus_notify_list,
+ type, (void *)handle);
+
+ switch (type) {
+
+ case ACPI_NOTIFY_BUS_CHECK:
+ acpi_bus_check_scope(handle);
+ /*
+ * TBD: We'll need to outsource certain events to non-ACPI
+ * drivers via the device manager (device.c).
+ */
+ break;
+
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ acpi_bus_check_device(handle);
+ /*
+ * TBD: We'll need to outsource certain events to non-ACPI
+ * drivers via the device manager (device.c).
+ */
+ break;
+
+ case ACPI_NOTIFY_DEVICE_WAKE:
+ /* TBD */
+ break;
+
+ case ACPI_NOTIFY_EJECT_REQUEST:
+ /* TBD */
+ break;
+
+ case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
+ /* TBD: Exactly what does 'light' mean? */
+ break;
+
+ case ACPI_NOTIFY_FREQUENCY_MISMATCH:
+ /* TBD */
+ break;
+
+ case ACPI_NOTIFY_BUS_MODE_MISMATCH:
+ /* TBD */
+ break;
+
+ case ACPI_NOTIFY_POWER_FAULT:
+ /* TBD */
+ break;
+
+ default:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Received unknown/unsupported notification [%08x]\n",
+ type));
+ break;
+ }
+
+ acpi_bus_get_device(handle, &device);
+ if (device) {
+ driver = device->driver;
+ if (driver && driver->ops.notify &&
+ (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
+ driver->ops.notify(device, type);
+ }
+}
+
+/* --------------------------------------------------------------------------
+ Initialization/Cleanup
+ -------------------------------------------------------------------------- */
+
+static int __init acpi_bus_init_irq(void)
+{
+ acpi_status status = AE_OK;
+ union acpi_object arg = { ACPI_TYPE_INTEGER };
+ struct acpi_object_list arg_list = { 1, &arg };
+ char *message = NULL;
+
+
+ /*
+ * Let the system know what interrupt model we are using by
+ * evaluating the \_PIC object, if exists.
+ */
+
+ switch (acpi_irq_model) {
+ case ACPI_IRQ_MODEL_PIC:
+ message = "PIC";
+ break;
+ case ACPI_IRQ_MODEL_IOAPIC:
+ message = "IOAPIC";
+ break;
+ case ACPI_IRQ_MODEL_IOSAPIC:
+ message = "IOSAPIC";
+ break;
+ case ACPI_IRQ_MODEL_PLATFORM:
+ message = "platform specific model";
+ break;
+ default:
+ printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
+ return -ENODEV;
+ }
+
+ printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
+
+ arg.integer.value = acpi_irq_model;
+
+ status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL);
+ if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
+ ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+u8 acpi_gbl_permanent_mmap;
+
+
+void __init acpi_early_init(void)
+{
+ acpi_status status = AE_OK;
+
+ if (acpi_disabled)
+ return;
+
+ printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
+
+ /* enable workarounds, unless strict ACPI spec. compliance */
+ if (!acpi_strict)
+ acpi_gbl_enable_interpreter_slack = TRUE;
+
+ acpi_gbl_permanent_mmap = 1;
+
+ /*
+ * If the machine falls into the DMI check table,
+ * DSDT will be copied to memory
+ */
+ dmi_check_system(dsdt_dmi_table);
+
+ status = acpi_reallocate_root_table();
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX
+ "Unable to reallocate ACPI tables\n");
+ goto error0;
+ }
+
+ status = acpi_initialize_subsystem();
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX
+ "Unable to initialize the ACPI Interpreter\n");
+ goto error0;
+ }
+
+ status = acpi_load_tables();
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX
+ "Unable to load the System Description Tables\n");
+ goto error0;
+ }
+
+#ifdef CONFIG_X86
+ if (!acpi_ioapic) {
+ /* compatible (0) means level (3) */
+ if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) {
+ acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK;
+ acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL;
+ }
+ /* Set PIC-mode SCI trigger type */
+ acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt,
+ (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
+ } else {
+ /*
+ * now that acpi_gbl_FADT is initialized,
+ * update it with result from INT_SRC_OVR parsing
+ */
+ acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi;
+ }
+#endif
+
+ status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX "Unable to enable ACPI\n");
+ goto error0;
+ }
+
+ /*
+ * If the system is using ACPI then we can be reasonably
+ * confident that any regulators are managed by the firmware
+ * so tell the regulator core it has everything it needs to
+ * know.
+ */
+ regulator_has_full_constraints();
+
+ return;
+
+ error0:
+ disable_acpi();
+ return;
+}
+
+static int __init acpi_bus_init(void)
+{
+ int result = 0;
+ acpi_status status = AE_OK;
+ extern acpi_status acpi_os_initialize1(void);
+
+ acpi_os_initialize1();
+
+ status = acpi_enable_subsystem(ACPI_NO_ACPI_ENABLE);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX
+ "Unable to start the ACPI Interpreter\n");
+ goto error1;
+ }
+
+ /*
+ * ACPI 2.0 requires the EC driver to be loaded and work before
+ * the EC device is found in the namespace (i.e. before acpi_initialize_objects()
+ * is called).
+ *
+ * This is accomplished by looking for the ECDT table, and getting
+ * the EC parameters out of that.
+ */
+ status = acpi_ec_ecdt_probe();
+ /* Ignore result. Not having an ECDT is not fatal. */
+
+ status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n");
+ goto error1;
+ }
+
+ /*
+ * _OSC method may exist in module level code,
+ * so it must be run after ACPI_FULL_INITIALIZATION
+ */
+ acpi_bus_osc_support();
+
+ /*
+ * _PDC control method may load dynamic SSDT tables,
+ * and we need to install the table handler before that.
+ */
+ acpi_sysfs_init();
+
+ acpi_early_processor_set_pdc();
+
+ /*
+ * Maybe EC region is required at bus_scan/acpi_get_devices. So it
+ * is necessary to enable it as early as possible.
+ */
+ acpi_boot_ec_enable();
+
+ printk(KERN_INFO PREFIX "Interpreter enabled\n");
+
+ /* Initialize sleep structures */
+ acpi_sleep_init();
+
+ /*
+ * Get the system interrupt model and evaluate \_PIC.
+ */
+ result = acpi_bus_init_irq();
+ if (result)
+ goto error1;
+
+ /*
+ * Register the for all standard device notifications.
+ */
+ status =
+ acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY,
+ &acpi_bus_notify, NULL);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX
+ "Unable to register for device notifications\n");
+ goto error1;
+ }
+
+ /*
+ * Create the top ACPI proc directory
+ */
+ acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL);
+
+ return 0;
+
+ /* Mimic structured exception handling */
+ error1:
+ acpi_terminate();
+ return -ENODEV;
+}
+
+struct kobject *acpi_kobj;
+EXPORT_SYMBOL_GPL(acpi_kobj);
+
+static int __init acpi_init(void)
+{
+ int result;
+
+ if (acpi_disabled) {
+ printk(KERN_INFO PREFIX "Interpreter disabled.\n");
+ return -ENODEV;
+ }
+
+ acpi_kobj = kobject_create_and_add("acpi", firmware_kobj);
+ if (!acpi_kobj) {
+ printk(KERN_WARNING "%s: kset create error\n", __func__);
+ acpi_kobj = NULL;
+ }
+
+ init_acpi_device_notify();
+ result = acpi_bus_init();
+ if (result) {
+ disable_acpi();
+ return result;
+ }
+
+ pci_mmcfg_late_init();
+ acpi_scan_init();
+ acpi_ec_init();
+ acpi_debugfs_init();
+ acpi_sleep_proc_init();
+ acpi_wakeup_device_init();
+ return 0;
+}
+
+subsys_initcall(acpi_init);