Lines Matching +full:per +full:- +full:hart
1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * ACPI-WMI mapping driver
5 * Copyright (C) 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
9 * Copyright (c) 2001-2007 Anton Altaparmakov
12 * WMI bus infrastructure by Andrew Lutomirski and Darren Hart:
37 MODULE_DESCRIPTION("ACPI-WMI Mapping Driver");
101 .name = "acpi-wmi",
122 block = &wblock->gblock; in find_guid()
124 if (memcmp(block->guid, &guid_input, 16) == 0) { in find_guid()
141 if (wdriver->id_table == NULL) in find_guid_context()
144 id = wdriver->id_table; in find_guid_context()
145 while (*id->guid_string) { in find_guid_context()
146 if (guid_parse(id->guid_string, &guid_input)) in find_guid_context()
148 if (!memcmp(wblock->gblock.guid, &guid_input, 16)) in find_guid_context()
149 return id->context; in find_guid_context()
164 return -ENOENT; in get_subobj_info()
166 return -EIO; in get_subobj_info()
171 return -EIO; in get_subobj_info()
186 block = &wblock->gblock; in wmi_method_enable()
187 handle = wblock->acpi_device->handle; in wmi_method_enable()
189 snprintf(method, 5, "WE%02X", block->notify_id); in wmi_method_enable()
203 * set_required_buffer_size - Sets the buffer size needed for performing IOCTL
214 wblock->req_buf_size = length; in set_required_buffer_size()
221 * wmi_evaluate_method - Evaluate a WMI method
222 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
228 * Call an ACPI-WMI method
237 return wmidev_evaluate_method(&wblock->dev, instance, method_id, in wmi_evaluate_method()
243 * wmidev_evaluate_method - Evaluate a WMI method
250 * Call an ACPI-WMI method
264 block = &wblock->gblock; in wmidev_evaluate_method()
265 handle = wblock->acpi_device->handle; in wmidev_evaluate_method()
267 if (!(block->flags & ACPI_WMI_METHOD)) in wmidev_evaluate_method()
270 if (block->instance_count <= instance) in wmidev_evaluate_method()
283 if (block->flags & ACPI_WMI_STRING) { in wmidev_evaluate_method()
288 params[2].buffer.length = in->length; in wmidev_evaluate_method()
289 params[2].buffer.pointer = in->pointer; in wmidev_evaluate_method()
292 strncat(method, block->object_id, 2); in wmidev_evaluate_method()
314 block = &wblock->gblock; in __query_block()
315 handle = wblock->acpi_device->handle; in __query_block()
317 if (block->instance_count <= instance) in __query_block()
321 if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD)) in __query_block()
329 if (instance == 0 && wblock->read_takes_no_args) in __query_block()
336 if (block->flags & ACPI_WMI_EXPENSIVE) { in __query_block()
337 strncat(wc_method, block->object_id, 2); in __query_block()
348 strncat(method, block->object_id, 2); in __query_block()
354 * the WQxx method failed - we should disable collection anyway. in __query_block()
356 if ((block->flags & ACPI_WMI_EXPENSIVE) && ACPI_SUCCESS(wc_status)) { in __query_block()
364 * wmi_query_block - Return contents of a WMI block (deprecated)
365 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
369 * Return the contents of an ACPI-WMI data block to a buffer
399 * wmi_set_block - Write to a WMI block
400 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
404 * Write the contents of the input buffer to an ACPI-WMI data block
422 block = &wblock->gblock; in wmi_set_block()
423 handle = wblock->acpi_device->handle; in wmi_set_block()
425 if (block->instance_count <= instance) in wmi_set_block()
429 if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD)) in wmi_set_block()
437 if (block->flags & ACPI_WMI_STRING) { in wmi_set_block()
442 params[1].buffer.length = in->length; in wmi_set_block()
443 params[1].buffer.pointer = in->pointer; in wmi_set_block()
445 strncat(method, block->object_id, 2); in wmi_set_block()
453 pr_info("%pUL:\n", g->guid); in wmi_dump_wdg()
454 if (g->flags & ACPI_WMI_EVENT) in wmi_dump_wdg()
455 pr_info("\tnotify_id: 0x%02X\n", g->notify_id); in wmi_dump_wdg()
457 pr_info("\tobject_id: %2pE\n", g->object_id); in wmi_dump_wdg()
458 pr_info("\tinstance_count: %d\n", g->instance_count); in wmi_dump_wdg()
459 pr_info("\tflags: %#x", g->flags); in wmi_dump_wdg()
460 if (g->flags) { in wmi_dump_wdg()
461 if (g->flags & ACPI_WMI_EXPENSIVE) in wmi_dump_wdg()
463 if (g->flags & ACPI_WMI_METHOD) in wmi_dump_wdg()
465 if (g->flags & ACPI_WMI_STRING) in wmi_dump_wdg()
467 if (g->flags & ACPI_WMI_EVENT) in wmi_dump_wdg()
492 switch(obj->type) { in wmi_notify_debug()
494 pr_cont("BUFFER_TYPE - length %d\n", obj->buffer.length); in wmi_notify_debug()
497 pr_cont("STRING_TYPE - %s\n", obj->string.pointer); in wmi_notify_debug()
500 pr_cont("INTEGER_TYPE - %llu\n", obj->integer.value); in wmi_notify_debug()
503 pr_cont("PACKAGE_TYPE - %d elements\n", obj->package.count); in wmi_notify_debug()
506 pr_cont("object type 0x%X\n", obj->type); in wmi_notify_debug()
512 * wmi_install_notify_handler - Register handler for WMI events
513 * @guid: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
517 * Register a handler for events sent to the ACPI-WMI mapper device.
535 if (memcmp(block->gblock.guid, &guid_input, 16) == 0) { in wmi_install_notify_handler()
536 if (block->handler && in wmi_install_notify_handler()
537 block->handler != wmi_notify_debug) in wmi_install_notify_handler()
540 block->handler = handler; in wmi_install_notify_handler()
541 block->handler_data = data; in wmi_install_notify_handler()
555 * wmi_uninstall_notify_handler - Unregister handler for WMI events
556 * @guid: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
558 * Unregister handler for events sent to the ACPI-WMI mapper device.
575 if (memcmp(block->gblock.guid, &guid_input, 16) == 0) { in wmi_remove_notify_handler()
576 if (!block->handler || in wmi_remove_notify_handler()
577 block->handler == wmi_notify_debug) in wmi_remove_notify_handler()
581 block->handler = wmi_notify_debug; in wmi_remove_notify_handler()
585 block->handler = NULL; in wmi_remove_notify_handler()
586 block->handler_data = NULL; in wmi_remove_notify_handler()
600 * wmi_get_event_data - Get WMI data associated with an event
603 * @out: Buffer to hold event data. out->pointer should be freed with kfree()
620 gblock = &wblock->gblock; in wmi_get_event_data()
622 if ((gblock->flags & ACPI_WMI_EVENT) && in wmi_get_event_data()
623 (gblock->notify_id == event)) in wmi_get_event_data()
624 return acpi_evaluate_object(wblock->acpi_device->handle, in wmi_get_event_data()
633 * wmi_has_guid - Check if a GUID is available
634 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
645 * wmi_get_acpi_device_uid() - Get _UID name of ACPI device that defines GUID
646 * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
659 return acpi_device_uid(wblock->acpi_device); in wmi_get_acpi_device_uid()
681 return sprintf(buf, "wmi:%pUL\n", wblock->gblock.guid); in modalias_show()
690 return sprintf(buf, "%pUL\n", wblock->gblock.guid); in guid_show()
699 return sprintf(buf, "%d\n", (int)wblock->gblock.instance_count); in instance_count_show()
709 (wblock->gblock.flags & ACPI_WMI_EXPENSIVE) != 0); in expensive_show()
727 return sprintf(buf, "%02X\n", (unsigned int)wblock->gblock.notify_id); in notify_id_show()
742 return sprintf(buf, "%c%c\n", wblock->gblock.object_id[0], in object_id_show()
743 wblock->gblock.object_id[1]); in object_id_show()
752 return sprintf(buf, "%d\n", (int)wdev->setable); in setable_show()
773 if (add_uevent_var(env, "MODALIAS=wmi:%pUL", wblock->gblock.guid)) in wmi_dev_uevent()
774 return -ENOMEM; in wmi_dev_uevent()
776 if (add_uevent_var(env, "WMI_GUID=%pUL", wblock->gblock.guid)) in wmi_dev_uevent()
777 return -ENOMEM; in wmi_dev_uevent()
794 const struct wmi_device_id *id = wmi_driver->id_table; in wmi_dev_match()
799 while (*id->guid_string) { in wmi_dev_match()
802 if (WARN_ON(guid_parse(id->guid_string, &driver_guid))) in wmi_dev_match()
804 if (!memcmp(&driver_guid, wblock->gblock.guid, 16)) in wmi_dev_match()
814 const char *driver_name = filp->f_path.dentry->d_iname; in wmi_char_open()
819 if (!wblock->dev.dev.driver) in wmi_char_open()
821 if (strcmp(driver_name, wblock->dev.dev.driver->name) == 0) { in wmi_char_open()
822 filp->private_data = wblock; in wmi_char_open()
827 if (!filp->private_data) in wmi_char_open()
828 return -ENODEV; in wmi_char_open()
836 struct wmi_block *wblock = filp->private_data; in wmi_char_read()
839 &wblock->req_buf_size, in wmi_char_read()
840 sizeof(wblock->req_buf_size)); in wmi_char_read()
847 struct wmi_block *wblock = filp->private_data; in wmi_ioctl()
853 return -ENOTTY; in wmi_ioctl()
856 if (_IOC_NR(cmd) >= wblock->gblock.instance_count) in wmi_ioctl()
857 return -EINVAL; in wmi_ioctl()
859 mutex_lock(&wblock->char_mutex); in wmi_ioctl()
860 buf = wblock->handler_data; in wmi_ioctl()
861 if (get_user(buf->length, &input->length)) { in wmi_ioctl()
862 dev_dbg(&wblock->dev.dev, "Read length from user failed\n"); in wmi_ioctl()
863 ret = -EFAULT; in wmi_ioctl()
867 if (buf->length < wblock->req_buf_size) { in wmi_ioctl()
868 dev_err(&wblock->dev.dev, in wmi_ioctl()
870 buf->length, wblock->req_buf_size); in wmi_ioctl()
871 ret = -EINVAL; in wmi_ioctl()
875 if (buf->length > wblock->req_buf_size) in wmi_ioctl()
876 dev_warn(&wblock->dev.dev, in wmi_ioctl()
878 buf->length, wblock->req_buf_size); in wmi_ioctl()
881 if (copy_from_user(buf, input, wblock->req_buf_size)) { in wmi_ioctl()
882 dev_dbg(&wblock->dev.dev, "Copy %llu from user failed\n", in wmi_ioctl()
883 wblock->req_buf_size); in wmi_ioctl()
884 ret = -EFAULT; in wmi_ioctl()
889 wdriver = container_of(wblock->dev.dev.driver, in wmi_ioctl()
891 if (!try_module_get(wdriver->driver.owner)) { in wmi_ioctl()
892 ret = -EBUSY; in wmi_ioctl()
895 ret = wdriver->filter_callback(&wblock->dev, cmd, buf); in wmi_ioctl()
896 module_put(wdriver->driver.owner); in wmi_ioctl()
901 if (copy_to_user(input, buf, wblock->req_buf_size)) { in wmi_ioctl()
902 dev_dbg(&wblock->dev.dev, "Copy %llu to user failed\n", in wmi_ioctl()
903 wblock->req_buf_size); in wmi_ioctl()
904 ret = -EFAULT; in wmi_ioctl()
908 mutex_unlock(&wblock->char_mutex); in wmi_ioctl()
924 container_of(dev->driver, struct wmi_driver, driver); in wmi_dev_probe()
929 dev_warn(dev, "failed to enable device -- probing anyway\n"); in wmi_dev_probe()
931 if (wdriver->probe) { in wmi_dev_probe()
932 ret = wdriver->probe(dev_to_wdev(dev), in wmi_dev_probe()
939 if (wdriver->filter_callback) { in wmi_dev_probe()
941 if (!wblock->req_buf_size) { in wmi_dev_probe()
942 dev_err(&wblock->dev.dev, in wmi_dev_probe()
944 ret = -EINVAL; in wmi_dev_probe()
948 wblock->handler_data = kmalloc(wblock->req_buf_size, in wmi_dev_probe()
950 if (!wblock->handler_data) { in wmi_dev_probe()
951 ret = -ENOMEM; in wmi_dev_probe()
955 buf = kasprintf(GFP_KERNEL, "wmi/%s", wdriver->driver.name); in wmi_dev_probe()
957 ret = -ENOMEM; in wmi_dev_probe()
960 wblock->char_dev.minor = MISC_DYNAMIC_MINOR; in wmi_dev_probe()
961 wblock->char_dev.name = buf; in wmi_dev_probe()
962 wblock->char_dev.fops = &wmi_fops; in wmi_dev_probe()
963 wblock->char_dev.mode = 0444; in wmi_dev_probe()
964 ret = misc_register(&wblock->char_dev); in wmi_dev_probe()
967 ret = -ENOMEM; in wmi_dev_probe()
977 kfree(wblock->handler_data); in wmi_dev_probe()
988 container_of(dev->driver, struct wmi_driver, driver); in wmi_dev_remove()
991 if (wdriver->filter_callback) { in wmi_dev_remove()
992 misc_deregister(&wblock->char_dev); in wmi_dev_remove()
993 kfree(wblock->char_dev.name); in wmi_dev_remove()
994 kfree(wblock->handler_data); in wmi_dev_remove()
997 if (wdriver->remove) in wmi_dev_remove()
998 ret = wdriver->remove(dev_to_wdev(dev)); in wmi_dev_remove()
1046 if (gblock->flags & ACPI_WMI_EVENT) { in wmi_create_device()
1047 wblock->dev.dev.type = &wmi_type_event; in wmi_create_device()
1051 if (gblock->flags & ACPI_WMI_METHOD) { in wmi_create_device()
1052 wblock->dev.dev.type = &wmi_type_method; in wmi_create_device()
1053 mutex_init(&wblock->char_mutex); in wmi_create_device()
1059 * required per the WMI documentation. If it is not present, in wmi_create_device()
1063 strncat(method, wblock->gblock.object_id, 2); in wmi_create_device()
1064 result = get_subobj_info(device->handle, method, &info); in wmi_create_device()
1073 wblock->dev.dev.type = &wmi_type_data; in wmi_create_device()
1085 if (info->type != ACPI_TYPE_METHOD || info->param_count == 0) in wmi_create_device()
1086 wblock->read_takes_no_args = true; in wmi_create_device()
1091 strncat(method, wblock->gblock.object_id, 2); in wmi_create_device()
1092 result = get_subobj_info(device->handle, method, NULL); in wmi_create_device()
1095 wblock->dev.setable = true; in wmi_create_device()
1098 wblock->dev.dev.bus = &wmi_bus_type; in wmi_create_device()
1099 wblock->dev.dev.parent = wmi_bus_dev; in wmi_create_device()
1101 dev_set_name(&wblock->dev.dev, "%pUL", gblock->guid); in wmi_create_device()
1103 device_initialize(&wblock->dev.dev); in wmi_create_device()
1114 if (wblock->acpi_device == device) { in wmi_free_devices()
1115 list_del(&wblock->list); in wmi_free_devices()
1116 device_unregister(&wblock->dev.dev); in wmi_free_devices()
1126 if (memcmp(wblock->gblock.guid, guid, 16) == 0) { in guid_already_parsed()
1133 dev_warn(&device->dev, "duplicate WMI GUID %pUL (first instance was on %s)\n", in guid_already_parsed()
1134 guid, dev_name(&wblock->acpi_device->dev)); in guid_already_parsed()
1155 status = acpi_evaluate_object(device->handle, "_WDG", NULL, &out); in parse_wdg()
1157 return -ENXIO; in parse_wdg()
1161 return -ENXIO; in parse_wdg()
1163 if (obj->type != ACPI_TYPE_BUFFER) { in parse_wdg()
1164 retval = -ENXIO; in parse_wdg()
1168 gblock = (const struct guid_block *)obj->buffer.pointer; in parse_wdg()
1169 total = obj->buffer.length / sizeof(struct guid_block); in parse_wdg()
1186 retval = -ENOMEM; in parse_wdg()
1190 wblock->acpi_device = device; in parse_wdg()
1191 wblock->gblock = gblock[i]; in parse_wdg()
1199 list_add_tail(&wblock->list, &wmi_block_list); in parse_wdg()
1202 wblock->handler = wmi_notify_debug; in parse_wdg()
1212 if (wblock->acpi_device != device) in parse_wdg()
1215 retval = device_add(&wblock->dev.dev); in parse_wdg()
1218 wblock->gblock.guid); in parse_wdg()
1221 list_del(&wblock->list); in parse_wdg()
1222 put_device(&wblock->dev.dev); in parse_wdg()
1261 case -EINVAL: in acpi_wmi_ec_space_handler()
1264 case -ENODEV: in acpi_wmi_ec_space_handler()
1267 case -ETIME: in acpi_wmi_ec_space_handler()
1283 block = &wblock->gblock; in acpi_wmi_notify_handler()
1285 if (wblock->acpi_device->handle == handle && in acpi_wmi_notify_handler()
1286 (block->flags & ACPI_WMI_EVENT) && in acpi_wmi_notify_handler()
1287 (block->notify_id == event)) in acpi_wmi_notify_handler()
1298 if (wblock->dev.dev.driver) { in acpi_wmi_notify_handler()
1305 driver = container_of(wblock->dev.dev.driver, in acpi_wmi_notify_handler()
1313 status = acpi_evaluate_object(wblock->acpi_device->handle, in acpi_wmi_notify_handler()
1316 dev_warn(&wblock->dev.dev, in acpi_wmi_notify_handler()
1321 if (driver->notify) in acpi_wmi_notify_handler()
1322 driver->notify(&wblock->dev, in acpi_wmi_notify_handler()
1326 } else if (wblock->handler) { in acpi_wmi_notify_handler()
1328 wblock->handler(event, wblock->handler_data); in acpi_wmi_notify_handler()
1332 pr_info("DEBUG Event GUID: %pUL\n", wblock->gblock.guid); in acpi_wmi_notify_handler()
1335 wblock->acpi_device->pnp.device_class, in acpi_wmi_notify_handler()
1336 dev_name(&wblock->dev.dev), in acpi_wmi_notify_handler()
1343 struct acpi_device *acpi_device = ACPI_COMPANION(&device->dev); in acpi_wmi_remove()
1345 acpi_remove_notify_handler(acpi_device->handle, ACPI_DEVICE_NOTIFY, in acpi_wmi_remove()
1347 acpi_remove_address_space_handler(acpi_device->handle, in acpi_wmi_remove()
1362 acpi_device = ACPI_COMPANION(&device->dev); in acpi_wmi_probe()
1364 dev_err(&device->dev, "ACPI companion is missing\n"); in acpi_wmi_probe()
1365 return -ENODEV; in acpi_wmi_probe()
1368 status = acpi_install_address_space_handler(acpi_device->handle, in acpi_wmi_probe()
1373 dev_err(&device->dev, "Error installing EC region handler\n"); in acpi_wmi_probe()
1374 return -ENODEV; in acpi_wmi_probe()
1377 status = acpi_install_notify_handler(acpi_device->handle, in acpi_wmi_probe()
1382 dev_err(&device->dev, "Error installing notify handler\n"); in acpi_wmi_probe()
1383 error = -ENODEV; in acpi_wmi_probe()
1387 wmi_bus_dev = device_create(&wmi_bus_class, &device->dev, MKDEV(0, 0), in acpi_wmi_probe()
1388 NULL, "wmi_bus-%s", dev_name(&device->dev)); in acpi_wmi_probe()
1393 dev_set_drvdata(&device->dev, wmi_bus_dev); in acpi_wmi_probe()
1407 acpi_remove_notify_handler(acpi_device->handle, ACPI_DEVICE_NOTIFY, in acpi_wmi_probe()
1411 acpi_remove_address_space_handler(acpi_device->handle, in acpi_wmi_probe()
1421 driver->driver.owner = owner; in __wmi_driver_register()
1422 driver->driver.bus = &wmi_bus_type; in __wmi_driver_register()
1424 return driver_register(&driver->driver); in __wmi_driver_register()
1430 driver_unregister(&driver->driver); in wmi_driver_unregister()
1439 return -ENODEV; in acpi_wmi_init()