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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 15:21:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 15:21:02 -0700
commit3ed1c478eff8db80e234d5446cb378b503135888 (patch)
treee1c8e0f488ca49c49b5a31fe59add4254381dd4b /drivers/acpi/scan.c
parent151173e8ce9b95bbbbd7eedb9035cfaffbdb7cb2 (diff)
parent371deb9500831ad1afbf9ea00e373f650deaed2f (diff)
Merge tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael J Wysocki: - ARM big.LITTLE cpufreq driver from Viresh Kumar. - exynos5440 cpufreq driver from Amit Daniel Kachhap. - cpufreq core cleanup and code consolidation from Viresh Kumar and Stratos Karafotis. - cpufreq scalability improvement from Nathan Zimmer. - AMD "frequency sensitivity feedback" powersave bias for the ondemand cpufreq governor from Jacob Shin. - cpuidle code consolidation and cleanups from Daniel Lezcano. - ARM OMAP cpuidle fixes from Santosh Shilimkar and Daniel Lezcano. - ACPICA fixes and other improvements from Bob Moore, Jung-uk Kim, Lv Zheng, Yinghai Lu, Tang Chen, Colin Ian King, and Linn Crosetto. - ACPI core updates related to hotplug from Toshi Kani, Paul Bolle, Yasuaki Ishimatsu, and Rafael J Wysocki. - Intel Lynxpoint LPSS (Low-Power Subsystem) support improvements from Rafael J Wysocki and Andy Shevchenko. * tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (192 commits) cpufreq: Revert incorrect commit 5800043 cpufreq: MAINTAINERS: Add co-maintainer cpuidle: add maintainer entry ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points ARM: s3c64xx: cpuidle: use init/exit common routine cpufreq: pxa2xx: initialize variables ACPI: video: correct acpi_video_bus_add error processing SH: cpuidle: use init/exit common routine ARM: S5pv210: compiling issue, ARM_S5PV210_CPUFREQ needs CONFIG_CPU_FREQ_TABLE=y ACPI: Fix wrong parameter passed to memblock_reserve cpuidle: fix comment format pnp: use %*phC to dump small buffers isapnp: remove debug leftovers ARM: imx: cpuidle: use init/exit common routine ARM: davinci: cpuidle: use init/exit common routine ARM: kirkwood: cpuidle: use init/exit common routine ARM: calxeda: cpuidle: use init/exit common routine ARM: tegra: cpuidle: use init/exit common routine for tegra3 ARM: tegra: cpuidle: use init/exit common routine for tegra2 ARM: OMAP4: cpuidle: use init/exit common routine ...
Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r--drivers/acpi/scan.c531
1 files changed, 393 insertions, 138 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index f54d1985e59..fe158fd4f1d 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -63,6 +63,19 @@ int acpi_scan_add_handler(struct acpi_scan_handler *handler)
return 0;
}
+int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler,
+ const char *hotplug_profile_name)
+{
+ int error;
+
+ error = acpi_scan_add_handler(handler);
+ if (error)
+ return error;
+
+ acpi_sysfs_add_hotplug_profile(&handler->hotplug, hotplug_profile_name);
+ return 0;
+}
+
/*
* Creates hid/cid(s) string needed for modalias and uevent
* e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get:
@@ -107,32 +120,20 @@ acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, cha
}
static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
-/**
- * acpi_bus_hot_remove_device: hot-remove a device and its children
- * @context: struct acpi_eject_event pointer (freed in this func)
- *
- * Hot-remove a device and its children. This function frees up the
- * memory space passed by arg context, so that the caller may call
- * this function asynchronously through acpi_os_hotplug_execute().
- */
-void acpi_bus_hot_remove_device(void *context)
+static int acpi_scan_hot_remove(struct acpi_device *device)
{
- struct acpi_eject_event *ej_event = context;
- struct acpi_device *device = ej_event->device;
acpi_handle handle = device->handle;
- acpi_handle temp;
+ acpi_handle not_used;
struct acpi_object_list arg_list;
union acpi_object arg;
- acpi_status status = AE_OK;
- u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
-
- mutex_lock(&acpi_scan_lock);
+ acpi_status status;
+ unsigned long long sta;
/* If there is no handle, the device node has been unregistered. */
- if (!device->handle) {
+ if (!handle) {
dev_dbg(&device->dev, "ACPI handle missing\n");
put_device(&device->dev);
- goto out;
+ return -EINVAL;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -143,7 +144,7 @@ void acpi_bus_hot_remove_device(void *context)
put_device(&device->dev);
device = NULL;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_LCK", &temp))) {
+ if (ACPI_SUCCESS(acpi_get_handle(handle, "_LCK", &not_used))) {
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
@@ -161,18 +162,205 @@ void acpi_bus_hot_remove_device(void *context)
*/
status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
if (ACPI_FAILURE(status)) {
- if (status != AE_NOT_FOUND)
- acpi_handle_warn(handle, "Eject failed\n");
+ if (status == AE_NOT_FOUND) {
+ return -ENODEV;
+ } else {
+ acpi_handle_warn(handle, "Eject failed (0x%x)\n",
+ status);
+ return -EIO;
+ }
+ }
- /* Tell the firmware the hot-remove operation has failed. */
- acpi_evaluate_hotplug_ost(handle, ej_event->event,
- ost_code, NULL);
+ /*
+ * Verify if eject was indeed successful. If not, log an error
+ * message. No need to call _OST since _EJ0 call was made OK.
+ */
+ status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+ if (ACPI_FAILURE(status)) {
+ acpi_handle_warn(handle,
+ "Status check after eject failed (0x%x)\n", status);
+ } else if (sta & ACPI_STA_DEVICE_ENABLED) {
+ acpi_handle_warn(handle,
+ "Eject incomplete - status 0x%llx\n", sta);
+ }
+
+ return 0;
+}
+
+static void acpi_bus_device_eject(void *context)
+{
+ acpi_handle handle = context;
+ struct acpi_device *device = NULL;
+ struct acpi_scan_handler *handler;
+ u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
+
+ mutex_lock(&acpi_scan_lock);
+
+ acpi_bus_get_device(handle, &device);
+ if (!device)
+ goto err_out;
+
+ handler = device->handler;
+ if (!handler || !handler->hotplug.enabled) {
+ ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
+ goto err_out;
+ }
+ acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
+ ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+ if (handler->hotplug.mode == AHM_CONTAINER) {
+ device->flags.eject_pending = true;
+ kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
+ } else {
+ int error;
+
+ get_device(&device->dev);
+ error = acpi_scan_hot_remove(device);
+ if (error)
+ goto err_out;
}
out:
mutex_unlock(&acpi_scan_lock);
- kfree(context);
return;
+
+ err_out:
+ acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, ost_code,
+ NULL);
+ goto out;
+}
+
+static void acpi_scan_bus_device_check(acpi_handle handle, u32 ost_source)
+{
+ struct acpi_device *device = NULL;
+ u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
+ int error;
+
+ mutex_lock(&acpi_scan_lock);
+
+ acpi_bus_get_device(handle, &device);
+ if (device) {
+ dev_warn(&device->dev, "Attempt to re-insert\n");
+ goto out;
+ }
+ acpi_evaluate_hotplug_ost(handle, ost_source,
+ ACPI_OST_SC_INSERT_IN_PROGRESS, NULL);
+ error = acpi_bus_scan(handle);
+ if (error) {
+ acpi_handle_warn(handle, "Namespace scan failure\n");
+ goto out;
+ }
+ error = acpi_bus_get_device(handle, &device);
+ if (error) {
+ acpi_handle_warn(handle, "Missing device node object\n");
+ goto out;
+ }
+ ost_code = ACPI_OST_SC_SUCCESS;
+ if (device->handler && device->handler->hotplug.mode == AHM_CONTAINER)
+ kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
+
+ out:
+ acpi_evaluate_hotplug_ost(handle, ost_source, ost_code, NULL);
+ mutex_unlock(&acpi_scan_lock);
+}
+
+static void acpi_scan_bus_check(void *context)
+{
+ acpi_scan_bus_device_check((acpi_handle)context,
+ ACPI_NOTIFY_BUS_CHECK);
+}
+
+static void acpi_scan_device_check(void *context)
+{
+ acpi_scan_bus_device_check((acpi_handle)context,
+ ACPI_NOTIFY_DEVICE_CHECK);
+}
+
+static void acpi_hotplug_unsupported(acpi_handle handle, u32 type)
+{
+ u32 ost_status;
+
+ switch (type) {
+ case ACPI_NOTIFY_BUS_CHECK:
+ acpi_handle_debug(handle,
+ "ACPI_NOTIFY_BUS_CHECK event: unsupported\n");
+ ost_status = ACPI_OST_SC_INSERT_NOT_SUPPORTED;
+ break;
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ acpi_handle_debug(handle,
+ "ACPI_NOTIFY_DEVICE_CHECK event: unsupported\n");
+ ost_status = ACPI_OST_SC_INSERT_NOT_SUPPORTED;
+ break;
+ case ACPI_NOTIFY_EJECT_REQUEST:
+ acpi_handle_debug(handle,
+ "ACPI_NOTIFY_EJECT_REQUEST event: unsupported\n");
+ ost_status = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
+ break;
+ default:
+ /* non-hotplug event; possibly handled by other handler */
+ return;
+ }
+
+ acpi_evaluate_hotplug_ost(handle, type, ost_status, NULL);
+}
+
+static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data)
+{
+ acpi_osd_exec_callback callback;
+ struct acpi_scan_handler *handler = data;
+ acpi_status status;
+
+ if (!handler->hotplug.enabled)
+ return acpi_hotplug_unsupported(handle, type);
+
+ switch (type) {
+ case ACPI_NOTIFY_BUS_CHECK:
+ acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
+ callback = acpi_scan_bus_check;
+ break;
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
+ callback = acpi_scan_device_check;
+ break;
+ case ACPI_NOTIFY_EJECT_REQUEST:
+ acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
+ callback = acpi_bus_device_eject;
+ break;
+ default:
+ /* non-hotplug event; possibly handled by other handler */
+ return;
+ }
+ status = acpi_os_hotplug_execute(callback, handle);
+ if (ACPI_FAILURE(status))
+ acpi_evaluate_hotplug_ost(handle, type,
+ ACPI_OST_SC_NON_SPECIFIC_FAILURE,
+ NULL);
+}
+
+/**
+ * acpi_bus_hot_remove_device: hot-remove a device and its children
+ * @context: struct acpi_eject_event pointer (freed in this func)
+ *
+ * Hot-remove a device and its children. This function frees up the
+ * memory space passed by arg context, so that the caller may call
+ * this function asynchronously through acpi_os_hotplug_execute().
+ */
+void acpi_bus_hot_remove_device(void *context)
+{
+ struct acpi_eject_event *ej_event = context;
+ struct acpi_device *device = ej_event->device;
+ acpi_handle handle = device->handle;
+ int error;
+
+ mutex_lock(&acpi_scan_lock);
+
+ error = acpi_scan_hot_remove(device);
+ if (error && handle)
+ acpi_evaluate_hotplug_ost(handle, ej_event->event,
+ ACPI_OST_SC_NON_SPECIFIC_FAILURE,
+ NULL);
+
+ mutex_unlock(&acpi_scan_lock);
+ kfree(context);
}
EXPORT_SYMBOL(acpi_bus_hot_remove_device);
@@ -206,51 +394,61 @@ static ssize_t
acpi_eject_store(struct device *d, struct device_attribute *attr,
const char *buf, size_t count)
{
- int ret = count;
- acpi_status status;
- acpi_object_type type = 0;
struct acpi_device *acpi_device = to_acpi_device(d);
struct acpi_eject_event *ej_event;
+ acpi_object_type not_used;
+ acpi_status status;
+ u32 ost_source;
+ int ret;
- if ((!count) || (buf[0] != '1')) {
+ if (!count || buf[0] != '1')
return -EINVAL;
- }
- if (!acpi_device->driver && !acpi_device->handler) {
- ret = -ENODEV;
- goto err;
- }
- status = acpi_get_type(acpi_device->handle, &type);
- if (ACPI_FAILURE(status) || (!acpi_device->flags.ejectable)) {
- ret = -ENODEV;
- goto err;
- }
- ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
- if (!ej_event) {
- ret = -ENOMEM;
- goto err;
- }
+ if ((!acpi_device->handler || !acpi_device->handler->hotplug.enabled)
+ && !acpi_device->driver)
+ return -ENODEV;
+
+ status = acpi_get_type(acpi_device->handle, &not_used);
+ if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
+ return -ENODEV;
+
+ mutex_lock(&acpi_scan_lock);
- get_device(&acpi_device->dev);
- ej_event->device = acpi_device;
if (acpi_device->flags.eject_pending) {
- /* event originated from ACPI eject notification */
- ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
+ /* ACPI eject notification event. */
+ ost_source = ACPI_NOTIFY_EJECT_REQUEST;
acpi_device->flags.eject_pending = 0;
} else {
- /* event originated from user */
- ej_event->event = ACPI_OST_EC_OSPM_EJECT;
- (void) acpi_evaluate_hotplug_ost(acpi_device->handle,
- ej_event->event, ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+ /* Eject initiated by user space. */
+ ost_source = ACPI_OST_EC_OSPM_EJECT;
}
-
+ ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
+ if (!ej_event) {
+ ret = -ENOMEM;
+ goto err_out;
+ }
+ acpi_evaluate_hotplug_ost(acpi_device->handle, ost_source,
+ ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+ ej_event->device = acpi_device;
+ ej_event->event = ost_source;
+ get_device(&acpi_device->dev);
status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event);
if (ACPI_FAILURE(status)) {
put_device(&acpi_device->dev);
kfree(ej_event);
+ ret = status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
+ goto err_out;
}
-err:
+ ret = count;
+
+ out:
+ mutex_unlock(&acpi_scan_lock);
return ret;
+
+ err_out:
+ acpi_evaluate_hotplug_ost(acpi_device->handle, ost_source,
+ ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
+ goto out;
}
static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
@@ -376,7 +574,7 @@ static int acpi_device_setup_files(struct acpi_device *dev)
goto end;
}
- if (dev->flags.bus_address)
+ if (dev->pnp.type.bus_address)
result = device_create_file(&dev->dev, &dev_attr_adr);
if (dev->pnp.unique_id)
result = device_create_file(&dev->dev, &dev_attr_uid);
@@ -449,7 +647,7 @@ static void acpi_device_remove_files(struct acpi_device *dev)
if (dev->pnp.unique_id)
device_remove_file(&dev->dev, &dev_attr_uid);
- if (dev->flags.bus_address)
+ if (dev->pnp.type.bus_address)
device_remove_file(&dev->dev, &dev_attr_adr);
device_remove_file(&dev->dev, &dev_attr_modalias);
device_remove_file(&dev->dev, &dev_attr_hid);
@@ -512,17 +710,6 @@ int acpi_match_device_ids(struct acpi_device *device,
}
EXPORT_SYMBOL(acpi_match_device_ids);
-void acpi_free_ids(struct acpi_device *device)
-{
- struct acpi_hardware_id *id, *tmp;
-
- list_for_each_entry_safe(id, tmp, &device->pnp.ids, list) {
- kfree(id->id);
- kfree(id);
- }
- kfree(device->pnp.unique_id);
-}
-
static void acpi_free_power_resources_lists(struct acpi_device *device)
{
int i;
@@ -543,7 +730,7 @@ static void acpi_device_release(struct device *dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
- acpi_free_ids(acpi_dev);
+ acpi_free_pnp_ids(&acpi_dev->pnp);
acpi_free_power_resources_lists(acpi_dev);
kfree(acpi_dev);
}
@@ -1256,19 +1443,17 @@ static void acpi_device_get_busid(struct acpi_device *device)
}
/*
- * acpi_bay_match - see if a device is an ejectable driver bay
+ * acpi_bay_match - see if an acpi object is an ejectable driver bay
*
* If an acpi object is ejectable and has one of the ACPI ATA methods defined,
* then we can safely call it an ejectable drive bay
*/
-static int acpi_bay_match(struct acpi_device *device){
+static int acpi_bay_match(acpi_handle handle)
+{
acpi_status status;
- acpi_handle handle;
acpi_handle tmp;
acpi_handle phandle;
- handle = device->handle;
-
status = acpi_get_handle(handle, "_EJ0", &tmp);
if (ACPI_FAILURE(status))
return -ENODEV;
@@ -1292,12 +1477,12 @@ static int acpi_bay_match(struct acpi_device *device){
}
/*
- * acpi_dock_match - see if a device has a _DCK method
+ * acpi_dock_match - see if an acpi object has a _DCK method
*/
-static int acpi_dock_match(struct acpi_device *device)
+static int acpi_dock_match(acpi_handle handle)
{
acpi_handle tmp;
- return acpi_get_handle(device->handle, "_DCK", &tmp);
+ return acpi_get_handle(handle, "_DCK", &tmp);
}
const char *acpi_device_hid(struct acpi_device *device)
@@ -1312,7 +1497,7 @@ const char *acpi_device_hid(struct acpi_device *device)
}
EXPORT_SYMBOL(acpi_device_hid);
-static void acpi_add_id(struct acpi_device *device, const char *dev_id)
+static void acpi_add_id(struct acpi_device_pnp *pnp, const char *dev_id)
{
struct acpi_hardware_id *id;
@@ -1326,7 +1511,8 @@ static void acpi_add_id(struct acpi_device *device, const char *dev_id)
return;
}
- list_add_tail(&id->list, &device->pnp.ids);
+ list_add_tail(&id->list, &pnp->ids);
+ pnp->type.hardware_id = 1;
}
/*
@@ -1334,7 +1520,7 @@ static void acpi_add_id(struct acpi_device *device, const char *dev_id)
* lacks the SMBUS01 HID and the methods do not have the necessary "_"
* prefix. Work around this.
*/
-static int acpi_ibm_smbus_match(struct acpi_device *device)
+static int acpi_ibm_smbus_match(acpi_handle handle)
{
acpi_handle h_dummy;
struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
@@ -1344,7 +1530,7 @@ static int acpi_ibm_smbus_match(struct acpi_device *device)
return -ENODEV;
/* Look for SMBS object */
- result = acpi_get_name(device->handle, ACPI_SINGLE_NAME, &path);
+ result = acpi_get_name(handle, ACPI_SINGLE_NAME, &path);
if (result)
return result;
@@ -1355,48 +1541,50 @@ static int acpi_ibm_smbus_match(struct acpi_device *device)
/* Does it have the necessary (but misnamed) methods? */
result = -ENODEV;
- if (ACPI_SUCCESS(acpi_get_handle(device->handle, "SBI", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "SBR", &h_dummy)) &&
- ACPI_SUCCESS(acpi_get_handle(device->handle, "SBW", &h_dummy)))
+ if (ACPI_SUCCESS(acpi_get_handle(handle, "SBI", &h_dummy)) &&
+ ACPI_SUCCESS(acpi_get_handle(handle, "SBR", &h_dummy)) &&
+ ACPI_SUCCESS(acpi_get_handle(handle, "SBW", &h_dummy)))
result = 0;
out:
kfree(path.pointer);
return result;
}
-static void acpi_device_set_id(struct acpi_device *device)
+static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
+ int device_type)
{
acpi_status status;
struct acpi_device_info *info;
struct acpi_pnp_device_id_list *cid_list;
int i;
- switch (device->device_type) {
+ switch (device_type) {
case ACPI_BUS_TYPE_DEVICE:
- if (ACPI_IS_ROOT_DEVICE(device)) {
- acpi_add_id(device, ACPI_SYSTEM_HID);
+ if (handle == ACPI_ROOT_OBJECT) {
+ acpi_add_id(pnp, ACPI_SYSTEM_HID);
break;
}
- status = acpi_get_object_info(device->handle, &info);
+ status = acpi_get_object_info(handle, &info);
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__);
+ pr_err(PREFIX "%s: Error reading device info\n",
+ __func__);
return;
}
if (info->valid & ACPI_VALID_HID)
- acpi_add_id(device, info->hardware_id.string);
+ acpi_add_id(pnp, info->hardware_id.string);
if (info->valid & ACPI_VALID_CID) {
cid_list = &info->compatible_id_list;
for (i = 0; i < cid_list->count; i++)
- acpi_add_id(device, cid_list->ids[i].string);
+ acpi_add_id(pnp, cid_list->ids[i].string);
}
if (info->valid & ACPI_VALID_ADR) {
- device->pnp.bus_address = info->address;
- device->flags.bus_address = 1;
+ pnp->bus_address = info->address;
+ pnp->type.bus_address = 1;
}
if (info->valid & ACPI_VALID_UID)
- device->pnp.unique_id = kstrdup(info->unique_id.string,
+ pnp->unique_id = kstrdup(info->unique_id.string,
GFP_KERNEL);
kfree(info);
@@ -1405,40 +1593,50 @@ static void acpi_device_set_id(struct acpi_device *device)
* Some devices don't reliably have _HIDs & _CIDs, so add
* synthetic HIDs to make sure drivers can find them.
*/
- if (acpi_is_video_device(device))
- acpi_add_id(device, ACPI_VIDEO_HID);
- else if (ACPI_SUCCESS(acpi_bay_match(device)))
- acpi_add_id(device, ACPI_BAY_HID);
- else if (ACPI_SUCCESS(acpi_dock_match(device)))
- acpi_add_id(device, ACPI_DOCK_HID);
- else if (!acpi_ibm_smbus_match(device))
- acpi_add_id(device, ACPI_SMBUS_IBM_HID);
- else if (list_empty(&device->pnp.ids) &&
- ACPI_IS_ROOT_DEVICE(device->parent)) {
- acpi_add_id(device, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
- strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);
- strcpy(device->pnp.device_class, ACPI_BUS_CLASS);
+ if (acpi_is_video_device(handle))
+ acpi_add_id(pnp, ACPI_VIDEO_HID);
+ else if (ACPI_SUCCESS(acpi_bay_match(handle)))
+ acpi_add_id(pnp, ACPI_BAY_HID);
+ else if (ACPI_SUCCESS(acpi_dock_match(handle)))
+ acpi_add_id(pnp, ACPI_DOCK_HID);
+ else if (!acpi_ibm_smbus_match(handle))
+ acpi_add_id(pnp, ACPI_SMBUS_IBM_HID);
+ else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT) {
+ acpi_add_id(pnp, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
+ strcpy(pnp->device_name, ACPI_BUS_DEVICE_NAME);
+ strcpy(pnp->device_class, ACPI_BUS_CLASS);
}
break;
case ACPI_BUS_TYPE_POWER:
- acpi_add_id(device, ACPI_POWER_HID);
+ acpi_add_id(pnp, ACPI_POWER_HID);
break;
case ACPI_BUS_TYPE_PROCESSOR:
- acpi_add_id(device, ACPI_PROCESSOR_OBJECT_HID);
+ acpi_add_id(pnp, ACPI_PROCESSOR_OBJECT_HID);
break;
case ACPI_BUS_TYPE_THERMAL:
- acpi_add_id(device, ACPI_THERMAL_HID);
+ acpi_add_id(pnp, ACPI_THERMAL_HID);
break;
case ACPI_BUS_TYPE_POWER_BUTTON:
- acpi_add_id(device, ACPI_BUTTON_HID_POWERF);
+ acpi_add_id(pnp, ACPI_BUTTON_HID_POWERF);
break;
case ACPI_BUS_TYPE_SLEEP_BUTTON:
- acpi_add_id(device, ACPI_BUTTON_HID_SLEEPF);
+ acpi_add_id(pnp, ACPI_BUTTON_HID_SLEEPF);
break;
}
}
+void acpi_free_pnp_ids(struct acpi_device_pnp *pnp)
+{
+ struct acpi_hardware_id *id, *tmp;
+
+ list_for_each_entry_safe(id, tmp, &pnp->ids, list) {
+ kfree(id->id);
+ kfree(id);
+ }
+ kfree(pnp->unique_id);
+}
+
void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
int type, unsigned long long sta)
{
@@ -1448,7 +1646,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
device->parent = acpi_bus_get_parent(handle);
STRUCT_TO_INT(device->status) = sta;
acpi_device_get_busid(device);
- acpi_device_set_id(device);
+ acpi_set_pnp_ids(handle, &device->pnp, type);
acpi_bus_get_flags(device);
device->flags.match_driver = false;
device_initialize(&device->dev);
@@ -1536,6 +1734,75 @@ static int acpi_bus_type_and_status(acpi_handle handle, int *type,
return 0;
}
+static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler,
+ char *idstr,
+ const struct acpi_device_id **matchid)
+{
+ const struct acpi_device_id *devid;
+
+ for (devid = handler->ids; devid->id[0]; devid++)
+ if (!strcmp((char *)devid->id, idstr)) {
+ if (matchid)
+ *matchid = devid;
+
+ return true;
+ }
+
+ return false;
+}
+
+static struct acpi_scan_handler *acpi_scan_match_handler(char *idstr,
+ const struct acpi_device_id **matchid)
+{
+ struct acpi_scan_handler *handler;
+
+ list_for_each_entry(handler, &acpi_scan_handlers_list, list_node)
+ if (acpi_scan_handler_matching(handler, idstr, matchid))
+ return handler;
+
+ return NULL;
+}
+
+void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val)
+{
+ if (!!hotplug->enabled == !!val)
+ return;
+
+ mutex_lock(&acpi_scan_lock);
+
+ hotplug->enabled = val;
+
+ mutex_unlock(&acpi_scan_lock);
+}
+
+static void acpi_scan_init_hotplug(acpi_handle handle, int type)
+{
+ struct acpi_device_pnp pnp = {};
+ struct acpi_hardware_id *hwid;
+ struct acpi_scan_handler *handler;
+
+ INIT_LIST_HEAD(&pnp.ids);
+ acpi_set_pnp_ids(handle, &pnp, type);
+
+ if (!pnp.type.hardware_id)
+ return;
+
+ /*
+ * This relies on the fact that acpi_install_notify_handler() will not
+ * install the same notify handler routine twice for the same handle.
+ */
+ list_for_each_entry(hwid, &pnp.ids, list) {
+ handler = acpi_scan_match_handler(hwid->id, NULL);
+ if (handler) {
+ acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+ acpi_hotplug_notify_cb, handler);
+ break;
+ }
+ }
+
+ acpi_free_pnp_ids(&pnp);
+}
+
static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
void *not_used, void **return_value)
{
@@ -1558,6 +1825,8 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
return AE_OK;
}
+ acpi_scan_init_hotplug(handle, type);
+
if (!(sta & ACPI_STA_DEVICE_PRESENT) &&
!(sta & ACPI_STA_DEVICE_FUNCTIONING)) {
struct acpi_device_wakeup wakeup;
@@ -1583,42 +1852,26 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
return AE_OK;
}
-static int acpi_scan_do_attach_handler(struct acpi_device *device, char *id)
+static int acpi_scan_attach_handler(struct acpi_device *device)
{
- struct acpi_scan_handler *handler;
+ struct acpi_hardware_id *hwid;
+ int ret = 0;
- list_for_each_entry(handler, &acpi_scan_handlers_list, list_node) {
+ list_for_each_entry(hwid, &device->pnp.ids, list) {
const struct acpi_device_id *devid;
+ struct acpi_scan_handler *handler;
- for (devid = handler->ids; devid->id[0]; devid++) {
- int ret;
-
- if (strcmp((char *)devid->id, id))
- continue;
-
+ handler = acpi_scan_match_handler(hwid->id, &devid);
+ if (handler) {
ret = handler->attach(device, devid);
if (ret > 0) {
device->handler = handler;
- return ret;
+ break;
} else if (ret < 0) {
- return ret;
+ break;
}
}
}
- return 0;
-}
-
-static int acpi_scan_attach_handler(struct acpi_device *device)
-{
- struct acpi_hardware_id *hwid;
- int ret = 0;
-
- list_for_each_entry(hwid, &device->pnp.ids, list) {
- ret = acpi_scan_do_attach_handler(device, hwid->id);
- if (ret)
- break;
-
- }
return ret;
}
@@ -1788,8 +2041,10 @@ int __init acpi_scan_init(void)
acpi_pci_root_init();
acpi_pci_link_init();
acpi_platform_init();
+ acpi_lpss_init();
acpi_csrt_init();
acpi_container_init();
+ acpi_memory_hotplug_init();
mutex_lock(&acpi_scan_lock);
/*