Lines Matching +full:autosuspend +full:- +full:period
1 // SPDX-License-Identifier: GPL-2.0
69 /* Protect struct usb_device->state and ->children members
70 * Note: Both are also protected by ->dev.sem, except that ->state can
78 /* synchronize hub-port add/remove and peering operations */
88 * 10 seconds to send reply for the initial 64-byte descriptor request.
90 /* define initial 64-byte descriptor request timeout in milliseconds */
94 "initial 64-byte descriptor request timeout in milliseconds "
95 "(default 5000 - 5.0 seconds)");
139 if (hub_is_superspeedplus(hub->hdev)) in portspeed()
141 if (hub_is_superspeed(hub->hdev)) in portspeed()
154 if (!hdev || !hdev->actconfig || !hdev->maxchild) in usb_hub_to_struct_hub()
156 return usb_get_intfdata(hdev->actconfig->interface[0]); in usb_hub_to_struct_hub()
162 if (udev->quirks & USB_QUIRK_NO_LPM) in usb_device_supports_lpm()
166 if (!udev->bos) in usb_device_supports_lpm()
172 if (udev->speed == USB_SPEED_HIGH || udev->speed == USB_SPEED_FULL) { in usb_device_supports_lpm()
173 if (udev->bos->ext_cap && in usb_device_supports_lpm()
175 le32_to_cpu(udev->bos->ext_cap->bmAttributes))) in usb_device_supports_lpm()
185 if (!udev->bos->ss_cap) { in usb_device_supports_lpm()
186 dev_info(&udev->dev, "No LPM exit latency info found, disabling LPM.\n"); in usb_device_supports_lpm()
190 if (udev->bos->ss_cap->bU1devExitLat == 0 && in usb_device_supports_lpm()
191 udev->bos->ss_cap->bU2DevExitLat == 0) { in usb_device_supports_lpm()
192 if (udev->parent) in usb_device_supports_lpm()
193 dev_info(&udev->dev, "LPM exit latency is zeroed, disabling LPM.\n"); in usb_device_supports_lpm()
195 dev_info(&udev->dev, "We don't know the algorithms for LPM for this host, disabling LPM.\n"); in usb_device_supports_lpm()
199 if (!udev->parent || udev->parent->lpm_capable) in usb_device_supports_lpm()
225 total_mel = hub_lpm_params->mel + in usb_set_lpm_mel()
227 hub->descriptor->u.ss.bHubHdrDecLat * 100; in usb_set_lpm_mel()
235 total_mel += (__le16_to_cpu(hub->descriptor->u.ss.wHubDelay) + in usb_set_lpm_mel()
246 if (!hub->hdev->parent) in usb_set_lpm_mel()
249 udev_lpm_params->mel = total_mel; in usb_set_lpm_mel()
283 hub_pel = port_to_port_exit_latency * 1000 + hub_lpm_params->pel; in usb_set_lpm_pel()
286 * According to figure C-7 in the USB 3.0 spec, the PEL for this device in usb_set_lpm_pel()
290 udev_lpm_params->pel = first_link_pel; in usb_set_lpm_pel()
292 udev_lpm_params->pel = hub_pel; in usb_set_lpm_pel()
296 * Set the System Exit Latency (SEL) to indicate the total worst-case time from
301 * - t1: device PEL
302 * - t2: time for the ERDY to make it from the device to the host.
303 * - t3: a host-specific delay to process the ERDY.
304 * - t4: time for the packet to make it from the host to the device.
318 total_sel = udev_lpm_params->pel; in usb_set_lpm_sel()
320 for (parent = udev->parent, num_hubs = 0; parent->parent; in usb_set_lpm_sel()
321 parent = parent->parent) in usb_set_lpm_sel()
323 /* t2 = 2.1us + 250ns * (num_hubs - 1) */ in usb_set_lpm_sel()
325 total_sel += 2100 + 250 * (num_hubs - 1); in usb_set_lpm_sel()
330 udev_lpm_params->sel = total_sel; in usb_set_lpm_sel()
342 if (!udev->lpm_capable || udev->speed < USB_SPEED_SUPER) in usb_set_lpm_parameters()
346 if (!udev->bos) in usb_set_lpm_parameters()
349 hub = usb_hub_to_struct_hub(udev->parent); in usb_set_lpm_parameters()
356 udev_u1_del = udev->bos->ss_cap->bU1devExitLat; in usb_set_lpm_parameters()
357 udev_u2_del = le16_to_cpu(udev->bos->ss_cap->bU2DevExitLat); in usb_set_lpm_parameters()
358 hub_u1_del = udev->parent->bos->ss_cap->bU1devExitLat; in usb_set_lpm_parameters()
359 hub_u2_del = le16_to_cpu(udev->parent->bos->ss_cap->bU2DevExitLat); in usb_set_lpm_parameters()
361 usb_set_lpm_mel(udev, &udev->u1_params, udev_u1_del, in usb_set_lpm_parameters()
362 hub, &udev->parent->u1_params, hub_u1_del); in usb_set_lpm_parameters()
364 usb_set_lpm_mel(udev, &udev->u2_params, udev_u2_del, in usb_set_lpm_parameters()
365 hub, &udev->parent->u2_params, hub_u2_del); in usb_set_lpm_parameters()
377 * U2, it's tHubPort2PortExitLat + U2DevExitLat - U1DevExitLat. I in usb_set_lpm_parameters()
386 usb_set_lpm_pel(udev, &udev->u1_params, udev_u1_del, in usb_set_lpm_parameters()
387 hub, &udev->parent->u1_params, hub_u1_del, in usb_set_lpm_parameters()
391 port_to_port_delay = 1 + hub_u2_del - hub_u1_del; in usb_set_lpm_parameters()
395 usb_set_lpm_pel(udev, &udev->u2_params, udev_u2_del, in usb_set_lpm_parameters()
396 hub, &udev->parent->u2_params, hub_u2_del, in usb_set_lpm_parameters()
400 usb_set_lpm_sel(udev, &udev->u1_params); in usb_set_lpm_parameters()
401 usb_set_lpm_sel(udev, &udev->u2_params); in usb_set_lpm_parameters()
429 size = USB_DT_HUB_NONVAR_SIZE + desc->bNbrPorts / 8 + 1; in get_hub_descriptor()
431 return -EMSGSIZE; in get_hub_descriptor()
435 return -EINVAL; in get_hub_descriptor()
484 * USB 2.0 spec Section 11.24.2.7.1.10 and table 11-7
489 struct usb_port *port_dev = hub->ports[port1 - 1]; in set_port_led()
492 status = set_port_feature(hub->hdev, (selector << 8) | port1, in set_port_led()
494 dev_dbg(&port_dev->dev, "indicator %s status %d\n", in set_port_led()
504 struct usb_device *hdev = hub->hdev; in led_work()
507 int cursor = -1; in led_work()
509 if (hdev->state != USB_STATE_CONFIGURED || hub->quiescing) in led_work()
512 for (i = 0; i < hdev->maxchild; i++) { in led_work()
515 /* 30%-50% duty cycle */ in led_work()
517 switch (hub->indicator[i]) { in led_work()
557 hub->indicator[i] = mode; in led_work()
561 cursor %= hdev->maxchild; in led_work()
563 hub->indicator[cursor] = INDICATOR_CYCLE; in led_work()
568 &hub->leds, LED_CYCLE_PERIOD); in led_work()
581 int i, status = -ETIMEDOUT; in get_hub_status()
584 (status == -ETIMEDOUT || status == -EPIPE); i++) { in get_hub_status()
599 int i, status = -ETIMEDOUT; in get_port_status()
602 (status == -ETIMEDOUT || status == -EPIPE); i++) { in get_port_status()
619 mutex_lock(&hub->status_mutex); in hub_ext_port_status()
620 ret = get_port_status(hub->hdev, port1, &hub->status->port, type, len); in hub_ext_port_status()
622 if (ret != -ENODEV) in hub_ext_port_status()
623 dev_err(hub->intfdev, in hub_ext_port_status()
626 ret = -EIO; in hub_ext_port_status()
628 *status = le16_to_cpu(hub->status->port.wPortStatus); in hub_ext_port_status()
629 *change = le16_to_cpu(hub->status->port.wPortChange); in hub_ext_port_status()
632 hub->status->port.dwExtPortStatus); in hub_ext_port_status()
635 mutex_unlock(&hub->status_mutex); in hub_ext_port_status()
651 spin_lock_irqsave(&hub->irq_urb_lock, flags); in hub_resubmit_irq_urb()
653 if (hub->quiescing) { in hub_resubmit_irq_urb()
654 spin_unlock_irqrestore(&hub->irq_urb_lock, flags); in hub_resubmit_irq_urb()
658 status = usb_submit_urb(hub->urb, GFP_ATOMIC); in hub_resubmit_irq_urb()
659 if (status && status != -ENODEV && status != -EPERM && in hub_resubmit_irq_urb()
660 status != -ESHUTDOWN) { in hub_resubmit_irq_urb()
661 dev_err(hub->intfdev, "resubmit --> %d\n", status); in hub_resubmit_irq_urb()
662 mod_timer(&hub->irq_urb_retry, jiffies + HZ); in hub_resubmit_irq_urb()
665 spin_unlock_irqrestore(&hub->irq_urb_lock, flags); in hub_resubmit_irq_urb()
680 if (hub->disconnected || work_pending(&hub->events)) in kick_hub_wq()
684 * Suppress autosuspend until the event is proceed. in kick_hub_wq()
691 intf = to_usb_interface(hub->intfdev); in kick_hub_wq()
695 if (queue_work(hub_wq, &hub->events)) in kick_hub_wq()
730 port_dev = hub->ports[portnum - 1]; in usb_wakeup_notification()
731 if (port_dev && port_dev->child) in usb_wakeup_notification()
732 pm_wakeup_event(&port_dev->child->dev, 0); in usb_wakeup_notification()
734 set_bit(portnum, hub->wakeup_bits); in usb_wakeup_notification()
743 struct usb_hub *hub = urb->context; in hub_irq()
744 int status = urb->status; in hub_irq()
749 case -ENOENT: /* synchronous unlink */ in hub_irq()
750 case -ECONNRESET: /* async unlink */ in hub_irq()
751 case -ESHUTDOWN: /* hardware going away */ in hub_irq()
756 dev_dbg(hub->intfdev, "transfer --> %d\n", status); in hub_irq()
757 if ((++hub->nerrors < 10) || hub->error) in hub_irq()
759 hub->error = status; in hub_irq()
765 for (i = 0; i < urb->actual_length; ++i) in hub_irq()
766 bits |= ((unsigned long) ((*hub->buffer)[i])) in hub_irq()
768 hub->event_bits[0] = bits; in hub_irq()
772 hub->nerrors = 0; in hub_irq()
811 spin_lock_irqsave(&hub->tt.lock, flags); in hub_tt_work()
812 while (!list_empty(&hub->tt.clear_list)) { in hub_tt_work()
815 struct usb_device *hdev = hub->hdev; in hub_tt_work()
819 next = hub->tt.clear_list.next; in hub_tt_work()
821 list_del(&clear->clear_list); in hub_tt_work()
824 spin_unlock_irqrestore(&hub->tt.lock, flags); in hub_tt_work()
825 status = hub_clear_tt_buffer(hdev, clear->devinfo, clear->tt); in hub_tt_work()
826 if (status && status != -ENODEV) in hub_tt_work()
827 dev_err(&hdev->dev, in hub_tt_work()
829 clear->tt, clear->devinfo, status); in hub_tt_work()
832 drv = clear->hcd->driver; in hub_tt_work()
833 if (drv->clear_tt_buffer_complete) in hub_tt_work()
834 (drv->clear_tt_buffer_complete)(clear->hcd, clear->ep); in hub_tt_work()
837 spin_lock_irqsave(&hub->tt.lock, flags); in hub_tt_work()
839 spin_unlock_irqrestore(&hub->tt.lock, flags); in hub_tt_work()
843 * usb_hub_set_port_power - control hub port's power state
868 set_bit(port1, hub->power_bits); in usb_hub_set_port_power()
870 clear_bit(port1, hub->power_bits); in usb_hub_set_port_power()
875 * usb_hub_clear_tt_buffer - clear control/bulk TT state in high speed hub
890 struct usb_device *udev = urb->dev; in usb_hub_clear_tt_buffer()
891 int pipe = urb->pipe; in usb_hub_clear_tt_buffer()
892 struct usb_tt *tt = udev->tt; in usb_hub_clear_tt_buffer()
902 dev_err(&udev->dev, "can't save CLEAR_TT_BUFFER state\n"); in usb_hub_clear_tt_buffer()
904 return -ENOMEM; in usb_hub_clear_tt_buffer()
908 clear->tt = tt->multi ? udev->ttport : 1; in usb_hub_clear_tt_buffer()
909 clear->devinfo = usb_pipeendpoint (pipe); in usb_hub_clear_tt_buffer()
910 clear->devinfo |= ((u16)udev->devaddr) << 4; in usb_hub_clear_tt_buffer()
911 clear->devinfo |= usb_pipecontrol(pipe) in usb_hub_clear_tt_buffer()
915 clear->devinfo |= 1 << 15; in usb_hub_clear_tt_buffer()
918 clear->hcd = bus_to_hcd(udev->bus); in usb_hub_clear_tt_buffer()
919 clear->ep = urb->ep; in usb_hub_clear_tt_buffer()
922 spin_lock_irqsave(&tt->lock, flags); in usb_hub_clear_tt_buffer()
923 list_add_tail(&clear->clear_list, &tt->clear_list); in usb_hub_clear_tt_buffer()
924 schedule_work(&tt->clear_work); in usb_hub_clear_tt_buffer()
925 spin_unlock_irqrestore(&tt->lock, flags); in usb_hub_clear_tt_buffer()
936 * USB 2.0 hubs. Some hubs do not implement port-power switching in hub_power_on()
941 dev_dbg(hub->intfdev, "enabling power on all ports\n"); in hub_power_on()
943 dev_dbg(hub->intfdev, "trying to enable port power on " in hub_power_on()
944 "non-switchable hub\n"); in hub_power_on()
945 for (port1 = 1; port1 <= hub->hdev->maxchild; port1++) in hub_power_on()
946 if (test_bit(port1, hub->power_bits)) in hub_power_on()
947 set_port_feature(hub->hdev, port1, USB_PORT_FEAT_POWER); in hub_power_on()
949 usb_clear_port_feature(hub->hdev, port1, in hub_power_on()
960 mutex_lock(&hub->status_mutex); in hub_hub_status()
961 ret = get_hub_status(hub->hdev, &hub->status->hub); in hub_hub_status()
963 if (ret != -ENODEV) in hub_hub_status()
964 dev_err(hub->intfdev, in hub_hub_status()
967 *status = le16_to_cpu(hub->status->hub.wHubStatus); in hub_hub_status()
968 *change = le16_to_cpu(hub->status->hub.wHubChange); in hub_hub_status()
971 mutex_unlock(&hub->status_mutex); in hub_hub_status()
978 return set_port_feature(hub->hdev, in hub_set_port_link_state()
984 * Disable a port and mark a logical connect-change event, so that some
986 * and will re-enumerate if there actually is a device attached.
990 dev_dbg(&hub->ports[port1 - 1]->dev, "logical disconnect\n"); in hub_port_logical_disconnect()
994 * - some devices won't enumerate without a VBUS power cycle in hub_port_logical_disconnect()
995 * - SRP saves power that way in hub_port_logical_disconnect()
996 * - ... new call, TBD ... in hub_port_logical_disconnect()
997 * That's easy if this hub can switch power per-port, and in hub_port_logical_disconnect()
1002 set_bit(port1, hub->change_bits); in hub_port_logical_disconnect()
1007 * usb_remove_device - disable a device's port on its parent hub
1024 if (!udev->parent) /* Can't remove a root hub */ in usb_remove_device()
1025 return -EINVAL; in usb_remove_device()
1026 hub = usb_hub_to_struct_hub(udev->parent); in usb_remove_device()
1027 intf = to_usb_interface(hub->intfdev); in usb_remove_device()
1033 set_bit(udev->portnum, hub->removed_bits); in usb_remove_device()
1034 hub_port_logical_disconnect(hub, udev->portnum); in usb_remove_device()
1049 struct usb_device *hdev = hub->hdev; in hub_activate()
1059 device_lock(&hdev->dev); in hub_activate()
1062 if (hub->disconnected) in hub_activate()
1081 if (hdev->parent && hub_is_superspeed(hdev)) { in hub_activate()
1084 hdev->level - 1, 0, NULL, 0, in hub_activate()
1087 dev_err(hub->intfdev, in hub_activate()
1092 * hub's initial power-up delays. This is pretty awkward in hub_activate()
1093 * and the implementation looks like a home-brewed sort of in hub_activate()
1107 INIT_DELAYED_WORK(&hub->init_work, hub_init_func2); in hub_activate()
1109 &hub->init_work, in hub_activate()
1112 /* Suppress autosuspend until init is done */ in hub_activate()
1114 to_usb_interface(hub->intfdev)); in hub_activate()
1121 hcd = bus_to_hcd(hdev->bus); in hub_activate()
1122 if (hcd->driver->update_hub_device) { in hub_activate()
1123 ret = hcd->driver->update_hub_device(hcd, hdev, in hub_activate()
1124 &hub->tt, GFP_NOIO); in hub_activate()
1126 dev_err(hub->intfdev, in hub_activate()
1128 dev_err(hub->intfdev, in hub_activate()
1137 } else if (hub_is_superspeed(hub->hdev)) in hub_activate()
1143 * Check each port and set hub->change_bits to let hub_wq know in hub_activate()
1146 for (port1 = 1; port1 <= hdev->maxchild; ++port1) { in hub_activate()
1147 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_activate()
1148 struct usb_device *udev = port_dev->child; in hub_activate()
1157 dev_dbg(&port_dev->dev, "status %04x change %04x\n", in hub_activate()
1170 udev->state == USB_STATE_NOTATTACHED)) { in hub_activate()
1183 /* Make sure a warm-reset request is handled by port_event */ in hub_activate()
1186 set_bit(port1, hub->event_bits); in hub_activate()
1198 /* Clear status-change flags; we'll debounce later */ in hub_activate()
1201 usb_clear_port_feature(hub->hdev, port1, in hub_activate()
1206 usb_clear_port_feature(hub->hdev, port1, in hub_activate()
1211 usb_clear_port_feature(hub->hdev, port1, in hub_activate()
1215 hub_is_superspeed(hub->hdev)) { in hub_activate()
1217 usb_clear_port_feature(hub->hdev, port1, in hub_activate()
1225 clear_bit(port1, hub->removed_bits); in hub_activate()
1227 if (!udev || udev->state == USB_STATE_NOTATTACHED) { in hub_activate()
1238 set_bit(port1, hub->change_bits); in hub_activate()
1250 * bit on device-initiated resume. in hub_activate()
1252 if (portchange || (hub_is_superspeed(hub->hdev) && in hub_activate()
1254 set_bit(port1, hub->event_bits); in hub_activate()
1256 } else if (udev->persist_enabled) { in hub_activate()
1258 udev->reset_resume = 1; in hub_activate()
1263 if (test_bit(port1, hub->power_bits)) in hub_activate()
1264 set_bit(port1, hub->change_bits); in hub_activate()
1269 set_bit(port1, hub->change_bits); in hub_activate()
1273 /* If no port-status-change flags were set, we don't need any in hub_activate()
1278 * If any port-status changes do occur during this delay, hub_wq in hub_activate()
1286 INIT_DELAYED_WORK(&hub->init_work, hub_init_func3); in hub_activate()
1288 &hub->init_work, in hub_activate()
1290 device_unlock(&hdev->dev); in hub_activate()
1297 hub->quiescing = 0; in hub_activate()
1299 status = usb_submit_urb(hub->urb, GFP_NOIO); in hub_activate()
1301 dev_err(hub->intfdev, "activate --> %d\n", status); in hub_activate()
1302 if (hub->has_indicators && blinkenlights) in hub_activate()
1304 &hub->leds, LED_CYCLE_PERIOD); in hub_activate()
1310 /* Allow autosuspend if it was suppressed */ in hub_activate()
1312 usb_autopm_put_interface_async(to_usb_interface(hub->intfdev)); in hub_activate()
1313 device_unlock(&hdev->dev); in hub_activate()
1340 struct usb_device *hdev = hub->hdev; in hub_quiesce()
1344 /* hub_wq and related activity won't re-trigger */ in hub_quiesce()
1345 spin_lock_irqsave(&hub->irq_urb_lock, flags); in hub_quiesce()
1346 hub->quiescing = 1; in hub_quiesce()
1347 spin_unlock_irqrestore(&hub->irq_urb_lock, flags); in hub_quiesce()
1351 for (i = 0; i < hdev->maxchild; ++i) { in hub_quiesce()
1352 if (hub->ports[i]->child) in hub_quiesce()
1353 usb_disconnect(&hub->ports[i]->child); in hub_quiesce()
1358 del_timer_sync(&hub->irq_urb_retry); in hub_quiesce()
1359 usb_kill_urb(hub->urb); in hub_quiesce()
1360 if (hub->has_indicators) in hub_quiesce()
1361 cancel_delayed_work_sync(&hub->leds); in hub_quiesce()
1362 if (hub->tt.hub) in hub_quiesce()
1363 flush_work(&hub->tt.clear_work); in hub_quiesce()
1370 for (i = 0; i < hub->hdev->maxchild; ++i) in hub_pm_barrier_for_all_ports()
1371 pm_runtime_barrier(&hub->ports[i]->dev); in hub_pm_barrier_for_all_ports()
1380 hub->in_reset = 1; in hub_pre_reset()
1390 hub->in_reset = 0; in hub_post_reset()
1400 struct usb_device *hdev = hub->hdev; in hub_configure()
1401 struct device *hub_dev = hub->intfdev; in hub_configure()
1411 hub->buffer = kmalloc(sizeof(*hub->buffer), GFP_KERNEL); in hub_configure()
1412 if (!hub->buffer) { in hub_configure()
1413 ret = -ENOMEM; in hub_configure()
1417 hub->status = kmalloc(sizeof(*hub->status), GFP_KERNEL); in hub_configure()
1418 if (!hub->status) { in hub_configure()
1419 ret = -ENOMEM; in hub_configure()
1422 mutex_init(&hub->status_mutex); in hub_configure()
1424 hub->descriptor = kzalloc(sizeof(*hub->descriptor), GFP_KERNEL); in hub_configure()
1425 if (!hub->descriptor) { in hub_configure()
1426 ret = -ENOMEM; in hub_configure()
1431 * hub->descriptor can handle USB_MAXCHILDREN ports, in hub_configure()
1432 * but a (non-SS) hub can/will return fewer bytes here. in hub_configure()
1434 ret = get_hub_descriptor(hdev, hub->descriptor); in hub_configure()
1444 if (hub->descriptor->bNbrPorts > maxchild) { in hub_configure()
1446 ret = -ENODEV; in hub_configure()
1448 } else if (hub->descriptor->bNbrPorts == 0) { in hub_configure()
1450 ret = -ENODEV; in hub_configure()
1459 u32 delay = __le16_to_cpu(hub->descriptor->u.ss.wHubDelay); in hub_configure()
1461 if (hdev->parent) in hub_configure()
1462 delay += hdev->parent->hub_delay; in hub_configure()
1465 hdev->hub_delay = min_t(u32, delay, USB_TP_TRANSMISSION_DELAY_MAX); in hub_configure()
1468 maxchild = hub->descriptor->bNbrPorts; in hub_configure()
1472 hub->ports = kcalloc(maxchild, sizeof(struct usb_port *), GFP_KERNEL); in hub_configure()
1473 if (!hub->ports) { in hub_configure()
1474 ret = -ENOMEM; in hub_configure()
1478 wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); in hub_configure()
1493 portstr[i] = hub->descriptor->u.hs.DeviceRemovable in hub_configure()
1516 dev_dbg(hub_dev, "global over-current protection\n"); in hub_configure()
1519 dev_dbg(hub_dev, "individual port over-current protection\n"); in hub_configure()
1523 dev_dbg(hub_dev, "no over-current protection\n"); in hub_configure()
1527 spin_lock_init(&hub->tt.lock); in hub_configure()
1528 INIT_LIST_HEAD(&hub->tt.clear_list); in hub_configure()
1529 INIT_WORK(&hub->tt.clear_work, hub_tt_work); in hub_configure()
1530 switch (hdev->descriptor.bDeviceProtocol) { in hub_configure()
1535 hub->tt.hub = hdev; in hub_configure()
1541 hub->tt.multi = 1; in hub_configure()
1545 hub->tt.hub = hdev; in hub_configure()
1552 hdev->descriptor.bDeviceProtocol); in hub_configure()
1559 if (hdev->descriptor.bDeviceProtocol != 0) { in hub_configure()
1560 hub->tt.think_time = 666; in hub_configure()
1563 8, hub->tt.think_time); in hub_configure()
1567 hub->tt.think_time = 666 * 2; in hub_configure()
1570 16, hub->tt.think_time); in hub_configure()
1573 hub->tt.think_time = 666 * 3; in hub_configure()
1576 24, hub->tt.think_time); in hub_configure()
1579 hub->tt.think_time = 666 * 4; in hub_configure()
1582 32, hub->tt.think_time); in hub_configure()
1586 /* probe() zeroes hub->indicator[] */ in hub_configure()
1588 hub->has_indicators = 1; in hub_configure()
1593 hub->descriptor->bPwrOn2PwrGood * 2); in hub_configure()
1595 /* power budgeting mostly matters with bus-powered hubs, in hub_configure()
1596 * and battery-powered root hubs (may provide just 8 mA). in hub_configure()
1603 hcd = bus_to_hcd(hdev->bus); in hub_configure()
1604 if (hdev == hdev->bus->root_hub) { in hub_configure()
1605 if (hcd->power_budget > 0) in hub_configure()
1606 hdev->bus_mA = hcd->power_budget; in hub_configure()
1608 hdev->bus_mA = full_load * maxchild; in hub_configure()
1609 if (hdev->bus_mA >= full_load) in hub_configure()
1610 hub->mA_per_port = full_load; in hub_configure()
1612 hub->mA_per_port = hdev->bus_mA; in hub_configure()
1613 hub->limited_power = 1; in hub_configure()
1616 int remaining = hdev->bus_mA - in hub_configure()
1617 hub->descriptor->bHubContrCurrent; in hub_configure()
1620 hub->descriptor->bHubContrCurrent); in hub_configure()
1621 hub->limited_power = 1; in hub_configure()
1627 hub->mA_per_port = unit_load; /* 7.2.1 */ in hub_configure()
1629 } else { /* Self-powered external hub */ in hub_configure()
1630 /* FIXME: What about battery-powered external hubs that in hub_configure()
1632 hub->mA_per_port = full_load; in hub_configure()
1634 if (hub->mA_per_port < full_load) in hub_configure()
1636 hub->mA_per_port); in hub_configure()
1645 if (hdev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_SELFPOWER) in hub_configure()
1651 dev_dbg(hub_dev, "%sover-current condition exists\n", in hub_configure()
1660 pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress); in hub_configure()
1663 if (maxp > sizeof(*hub->buffer)) in hub_configure()
1664 maxp = sizeof(*hub->buffer); in hub_configure()
1666 hub->urb = usb_alloc_urb(0, GFP_KERNEL); in hub_configure()
1667 if (!hub->urb) { in hub_configure()
1668 ret = -ENOMEM; in hub_configure()
1672 usb_fill_int_urb(hub->urb, hdev, pipe, *hub->buffer, maxp, hub_irq, in hub_configure()
1673 hub, endpoint->bInterval); in hub_configure()
1676 if (hub->has_indicators && blinkenlights) in hub_configure()
1677 hub->indicator[0] = INDICATOR_CYCLE; in hub_configure()
1683 dev_err(hub->intfdev, in hub_configure()
1688 hdev->maxchild = i; in hub_configure()
1689 for (i = 0; i < hdev->maxchild; i++) { in hub_configure()
1690 struct usb_port *port_dev = hub->ports[i]; in hub_configure()
1692 pm_runtime_put(&port_dev->dev); in hub_configure()
1702 if (hcd->driver->update_hub_device) { in hub_configure()
1703 ret = hcd->driver->update_hub_device(hcd, hdev, in hub_configure()
1704 &hub->tt, GFP_KERNEL); in hub_configure()
1711 usb_hub_adjust_deviceremovable(hdev, hub->descriptor); in hub_configure()
1727 usb_put_dev(hub->hdev); in hub_release()
1728 usb_put_intf(to_usb_interface(hub->intfdev)); in hub_release()
1734 kref_get(&hub->kref); in hub_get()
1739 kref_put(&hub->kref, hub_release); in hub_put()
1754 hub->disconnected = 1; in hub_disconnect()
1757 hub->error = 0; in hub_disconnect()
1764 port1 = hdev->maxchild; in hub_disconnect()
1765 hdev->maxchild = 0; in hub_disconnect()
1769 for (; port1 > 0; --port1) in hub_disconnect()
1774 if (hub->hdev->speed == USB_SPEED_HIGH) in hub_disconnect()
1775 highspeed_hubs--; in hub_disconnect()
1777 usb_free_urb(hub->urb); in hub_disconnect()
1778 kfree(hub->ports); in hub_disconnect()
1779 kfree(hub->descriptor); in hub_disconnect()
1780 kfree(hub->status); in hub_disconnect()
1781 kfree(hub->buffer); in hub_disconnect()
1783 pm_suspend_ignore_children(&intf->dev, false); in hub_disconnect()
1785 if (hub->quirk_disable_autosuspend) in hub_disconnect()
1788 onboard_hub_destroy_pdevs(&hub->onboard_hub_devs); in hub_disconnect()
1797 if (desc->desc.bInterfaceSubClass != 0 && in hub_descriptor_is_sane()
1798 desc->desc.bInterfaceSubClass != 1) in hub_descriptor_is_sane()
1801 /* Multiple endpoints? What kind of mutant ninja-hub is this? */ in hub_descriptor_is_sane()
1802 if (desc->desc.bNumEndpoints != 1) in hub_descriptor_is_sane()
1806 if (!usb_endpoint_is_int_in(&desc->endpoint[0].desc)) in hub_descriptor_is_sane()
1818 desc = intf->cur_altsetting; in hub_probe()
1822 * Set default autosuspend delay as 0 to speedup bus suspend, in hub_probe()
1825 * - Unlike other drivers, the hub driver does not rely on the in hub_probe()
1826 * autosuspend delay to provide enough time to handle a wakeup in hub_probe()
1830 * - The patch might cause one or more auto supend/resume for in hub_probe()
1842 * autosuspend delay of their parent hub in the probe() to one in hub_probe()
1846 * - The patch may cause one or more auto suspend/resume on in hub_probe()
1850 * - Change autosuspend delay of hub can avoid unnecessary auto in hub_probe()
1854 * - If user has indicated to prevent autosuspend by passing in hub_probe()
1855 * usbcore.autosuspend = -1 then keep autosuspend disabled. in hub_probe()
1858 if (hdev->dev.power.autosuspend_delay >= 0) in hub_probe()
1859 pm_runtime_set_autosuspend_delay(&hdev->dev, 0); in hub_probe()
1867 if (hdev->parent) { /* normal device */ in hub_probe()
1870 const struct hc_driver *drv = bus_to_hcd(hdev->bus)->driver; in hub_probe()
1872 if (drv->bus_suspend && drv->bus_resume) in hub_probe()
1876 if (hdev->level == MAX_TOPO_LEVEL) { in hub_probe()
1877 dev_err(&intf->dev, in hub_probe()
1879 return -E2BIG; in hub_probe()
1883 if (hdev->parent) { in hub_probe()
1884 dev_warn(&intf->dev, "ignoring external hub\n"); in hub_probe()
1885 return -ENODEV; in hub_probe()
1890 dev_err(&intf->dev, "bad descriptor, ignoring hub\n"); in hub_probe()
1891 return -EIO; in hub_probe()
1895 dev_info(&intf->dev, "USB hub found\n"); in hub_probe()
1899 return -ENOMEM; in hub_probe()
1901 kref_init(&hub->kref); in hub_probe()
1902 hub->intfdev = &intf->dev; in hub_probe()
1903 hub->hdev = hdev; in hub_probe()
1904 INIT_DELAYED_WORK(&hub->leds, led_work); in hub_probe()
1905 INIT_DELAYED_WORK(&hub->init_work, NULL); in hub_probe()
1906 INIT_WORK(&hub->events, hub_event); in hub_probe()
1907 INIT_LIST_HEAD(&hub->onboard_hub_devs); in hub_probe()
1908 spin_lock_init(&hub->irq_urb_lock); in hub_probe()
1909 timer_setup(&hub->irq_urb_retry, hub_retry_irq_urb, 0); in hub_probe()
1914 intf->needs_remote_wakeup = 1; in hub_probe()
1915 pm_suspend_ignore_children(&intf->dev, true); in hub_probe()
1917 if (hdev->speed == USB_SPEED_HIGH) in hub_probe()
1920 if (id->driver_info & HUB_QUIRK_CHECK_PORT_AUTOSUSPEND) in hub_probe()
1921 hub->quirk_check_port_auto_suspend = 1; in hub_probe()
1923 if (id->driver_info & HUB_QUIRK_DISABLE_AUTOSUSPEND) { in hub_probe()
1924 hub->quirk_disable_autosuspend = 1; in hub_probe()
1928 if ((id->driver_info & HUB_QUIRK_REDUCE_FRAME_INTR_BINTERVAL) && in hub_probe()
1929 desc->endpoint[0].desc.bInterval > USB_REDUCE_FRAME_INTR_BINTERVAL) { in hub_probe()
1930 desc->endpoint[0].desc.bInterval = in hub_probe()
1936 if (hub_configure(hub, &desc->endpoint[0].desc) >= 0) { in hub_probe()
1937 onboard_hub_create_pdevs(hdev, &hub->onboard_hub_devs); in hub_probe()
1943 return -ENODEV; in hub_probe()
1959 if (hdev->devnum <= 0) in hub_ioctl()
1960 info->nports = 0; in hub_ioctl()
1962 info->nports = hdev->maxchild; in hub_ioctl()
1963 for (i = 0; i < info->nports; i++) { in hub_ioctl()
1964 if (hub->ports[i]->child == NULL) in hub_ioctl()
1965 info->port[i] = 0; in hub_ioctl()
1967 info->port[i] = in hub_ioctl()
1968 hub->ports[i]->child->devnum; in hub_ioctl()
1973 return info->nports + 1; in hub_ioctl()
1977 return -ENOSYS; in hub_ioctl()
1990 if (hdev->state == USB_STATE_NOTATTACHED) in find_port_owner()
1991 return -ENODEV; in find_port_owner()
1992 if (port1 == 0 || port1 > hdev->maxchild) in find_port_owner()
1993 return -EINVAL; in find_port_owner()
1998 *ppowner = &(hub->ports[port1 - 1]->port_owner); in find_port_owner()
2013 return -EBUSY; in usb_hub_claim_port()
2029 return -ENOENT; in usb_hub_release_port()
2040 for (n = 0; n < hdev->maxchild; n++) { in usb_hub_release_all_ports()
2041 if (hub->ports[n]->port_owner == owner) in usb_hub_release_all_ports()
2042 hub->ports[n]->port_owner = NULL; in usb_hub_release_all_ports()
2052 if (udev->state == USB_STATE_NOTATTACHED || !udev->parent) in usb_device_is_owned()
2054 hub = usb_hub_to_struct_hub(udev->parent); in usb_device_is_owned()
2055 return !!hub->ports[udev->portnum - 1]->port_owner; in usb_device_is_owned()
2063 if (udev->parent) { in update_port_device_state()
2064 hub = usb_hub_to_struct_hub(udev->parent); in update_port_device_state()
2074 port_dev = hub->ports[udev->portnum - 1]; in update_port_device_state()
2075 WRITE_ONCE(port_dev->state, udev->state); in update_port_device_state()
2076 sysfs_notify_dirent(port_dev->state_kn); in update_port_device_state()
2086 for (i = 0; i < udev->maxchild; ++i) { in recursively_mark_NOTATTACHED()
2087 if (hub->ports[i]->child) in recursively_mark_NOTATTACHED()
2088 recursively_mark_NOTATTACHED(hub->ports[i]->child); in recursively_mark_NOTATTACHED()
2090 if (udev->state == USB_STATE_SUSPENDED) in recursively_mark_NOTATTACHED()
2091 udev->active_duration -= jiffies; in recursively_mark_NOTATTACHED()
2092 udev->state = USB_STATE_NOTATTACHED; in recursively_mark_NOTATTACHED()
2097 * usb_set_device_state - change a device's current state (usbcore, hcds)
2101 * udev->state is _not_ fully protected by the device lock. Although
2112 * If udev->state is already USB_STATE_NOTATTACHED then no change is made.
2113 * Otherwise udev->state is set to new_state, and if new_state is
2121 int wakeup = -1; in usb_set_device_state()
2124 if (udev->state == USB_STATE_NOTATTACHED) in usb_set_device_state()
2128 /* root hub wakeup capabilities are managed out-of-band in usb_set_device_state()
2131 if (udev->parent) { in usb_set_device_state()
2132 if (udev->state == USB_STATE_SUSPENDED in usb_set_device_state()
2136 wakeup = (udev->quirks & in usb_set_device_state()
2138 udev->actconfig->desc.bmAttributes & in usb_set_device_state()
2143 if (udev->state == USB_STATE_SUSPENDED && in usb_set_device_state()
2145 udev->active_duration -= jiffies; in usb_set_device_state()
2147 udev->state != USB_STATE_SUSPENDED) in usb_set_device_state()
2148 udev->active_duration += jiffies; in usb_set_device_state()
2149 udev->state = new_state; in usb_set_device_state()
2155 device_set_wakeup_capable(&udev->dev, wakeup); in usb_set_device_state()
2162 * Device numbers are used as filenames in usbfs. On USB-1.1 and
2163 * USB-2.0 buses they are also used as device addresses, however on
2164 * USB-3.0 buses the address is assigned by the controller hardware
2175 struct usb_bus *bus = udev->bus; in choose_devnum()
2178 mutex_lock(&bus->devnum_next_mutex); in choose_devnum()
2180 /* Try to allocate the next devnum beginning at bus->devnum_next. */ in choose_devnum()
2181 devnum = find_next_zero_bit(bus->devmap.devicemap, 128, in choose_devnum()
2182 bus->devnum_next); in choose_devnum()
2184 devnum = find_next_zero_bit(bus->devmap.devicemap, 128, 1); in choose_devnum()
2185 bus->devnum_next = (devnum >= 127 ? 1 : devnum + 1); in choose_devnum()
2187 set_bit(devnum, bus->devmap.devicemap); in choose_devnum()
2188 udev->devnum = devnum; in choose_devnum()
2190 mutex_unlock(&bus->devnum_next_mutex); in choose_devnum()
2195 if (udev->devnum > 0) { in release_devnum()
2196 clear_bit(udev->devnum, udev->bus->devmap.devicemap); in release_devnum()
2197 udev->devnum = -1; in release_devnum()
2203 udev->devnum = devnum; in update_devnum()
2204 if (!udev->devaddr) in update_devnum()
2205 udev->devaddr = (u8)devnum; in update_devnum()
2210 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in hub_free_dev()
2213 if (hcd->driver->free_dev && udev->parent) in hub_free_dev()
2214 hcd->driver->free_dev(hcd, udev); in hub_free_dev()
2223 for (i = 0; i < udev->maxchild; i++) { in hub_disconnect_children()
2224 if (hub->ports[i]->child) in hub_disconnect_children()
2225 usb_disconnect(&hub->ports[i]->child); in hub_disconnect_children()
2230 * usb_disconnect - disconnect a device (usbcore-internal)
2258 dev_info(&udev->dev, "USB disconnect, device number %d\n", in usb_disconnect()
2259 udev->devnum); in usb_disconnect()
2265 pm_runtime_barrier(&udev->dev); in usb_disconnect()
2275 dev_dbg(&udev->dev, "unregistering device\n"); in usb_disconnect()
2279 if (udev->parent) { in usb_disconnect()
2280 port1 = udev->portnum; in usb_disconnect()
2281 hub = usb_hub_to_struct_hub(udev->parent); in usb_disconnect()
2282 port_dev = hub->ports[port1 - 1]; in usb_disconnect()
2284 sysfs_remove_link(&udev->dev.kobj, "port"); in usb_disconnect()
2285 sysfs_remove_link(&port_dev->dev.kobj, "device"); in usb_disconnect()
2288 * As usb_port_runtime_resume() de-references udev, make in usb_disconnect()
2291 if (!test_and_set_bit(port1, hub->child_usage_bits)) in usb_disconnect()
2292 pm_runtime_get_sync(&port_dev->dev); in usb_disconnect()
2295 usb_remove_ep_devs(&udev->ep0); in usb_disconnect()
2299 * for de-configuring the device and invoking the remove-device in usb_disconnect()
2302 device_del(&udev->dev); in usb_disconnect()
2314 if (port_dev && test_and_clear_bit(port1, hub->child_usage_bits)) in usb_disconnect()
2315 pm_runtime_put(&port_dev->dev); in usb_disconnect()
2319 put_device(&udev->dev); in usb_disconnect()
2327 dev_info(&udev->dev, "%s: %s\n", id, string); in show_string()
2332 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); in announce_device()
2334 dev_info(&udev->dev, in announce_device()
2336 le16_to_cpu(udev->descriptor.idVendor), in announce_device()
2337 le16_to_cpu(udev->descriptor.idProduct), in announce_device()
2339 dev_info(&udev->dev, in announce_device()
2341 udev->descriptor.iManufacturer, in announce_device()
2342 udev->descriptor.iProduct, in announce_device()
2343 udev->descriptor.iSerialNumber); in announce_device()
2344 show_string(udev, "Product", udev->product); in announce_device()
2345 show_string(udev, "Manufacturer", udev->manufacturer); in announce_device()
2346 show_string(udev, "SerialNumber", udev->serial); in announce_device()
2354 * usb_enumerate_device_otg - FIXME (usbcore-internal)
2357 * Finish enumeration for On-The-Go devices
2367 * OTG-aware devices on OTG-capable root hubs may be able to use SRP, in usb_enumerate_device_otg()
2371 if (!udev->bus->is_b_host in usb_enumerate_device_otg()
2372 && udev->config in usb_enumerate_device_otg()
2373 && udev->parent == udev->bus->root_hub) { in usb_enumerate_device_otg()
2375 struct usb_bus *bus = udev->bus; in usb_enumerate_device_otg()
2376 unsigned port1 = udev->portnum; in usb_enumerate_device_otg()
2379 err = __usb_get_extra_descriptor(udev->rawdescriptors[0], in usb_enumerate_device_otg()
2380 le16_to_cpu(udev->config[0].desc.wTotalLength), in usb_enumerate_device_otg()
2382 if (err || !(desc->bmAttributes & USB_OTG_HNP)) in usb_enumerate_device_otg()
2385 dev_info(&udev->dev, "Dual-Role OTG device on %sHNP port\n", in usb_enumerate_device_otg()
2386 (port1 == bus->otg_port) ? "" : "non-"); in usb_enumerate_device_otg()
2389 if (port1 == bus->otg_port) { in usb_enumerate_device_otg()
2390 bus->b_hnp_enable = 1; in usb_enumerate_device_otg()
2402 dev_err(&udev->dev, "can't set HNP mode: %d\n", in usb_enumerate_device_otg()
2404 bus->b_hnp_enable = 0; in usb_enumerate_device_otg()
2406 } else if (desc->bLength == sizeof in usb_enumerate_device_otg()
2414 if (bus->otg_port != 0) { in usb_enumerate_device_otg()
2423 dev_err(&udev->dev, in usb_enumerate_device_otg()
2435 * usb_enumerate_device - Read device configs/intfs/otg (usbcore-internal)
2438 * This is only called by usb_new_device() -- all comments that apply there
2450 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_enumerate_device()
2452 if (udev->config == NULL) { in usb_enumerate_device()
2455 if (err != -ENODEV) in usb_enumerate_device()
2456 dev_err(&udev->dev, "can't read configurations, error %d\n", in usb_enumerate_device()
2463 udev->product = usb_cache_string(udev, udev->descriptor.iProduct); in usb_enumerate_device()
2464 udev->manufacturer = usb_cache_string(udev, in usb_enumerate_device()
2465 udev->descriptor.iManufacturer); in usb_enumerate_device()
2466 udev->serial = usb_cache_string(udev, udev->descriptor.iSerialNumber); in usb_enumerate_device()
2472 if (IS_ENABLED(CONFIG_USB_OTG_PRODUCTLIST) && hcd->tpl_support && in usb_enumerate_device()
2477 if (IS_ENABLED(CONFIG_USB_OTG) && (udev->bus->b_hnp_enable in usb_enumerate_device()
2478 || udev->bus->is_b_host)) { in usb_enumerate_device()
2481 dev_dbg(&udev->dev, "HNP fail, %d\n", err); in usb_enumerate_device()
2483 return -ENOTSUPP; in usb_enumerate_device()
2493 struct usb_device *hdev = udev->parent; in set_usb_port_removable()
2495 u8 port = udev->portnum; in set_usb_port_removable()
2499 dev_set_removable(&udev->dev, DEVICE_REMOVABLE_UNKNOWN); in set_usb_port_removable()
2504 hub = usb_hub_to_struct_hub(udev->parent); in set_usb_port_removable()
2510 switch (hub->ports[udev->portnum - 1]->connect_type) { in set_usb_port_removable()
2512 dev_set_removable(&udev->dev, DEVICE_REMOVABLE); in set_usb_port_removable()
2516 dev_set_removable(&udev->dev, DEVICE_FIXED); in set_usb_port_removable()
2526 wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); in set_usb_port_removable()
2532 if (le16_to_cpu(hub->descriptor->u.ss.DeviceRemovable) in set_usb_port_removable()
2536 if (hub->descriptor->u.hs.DeviceRemovable[port / 8] & (1 << (port % 8))) in set_usb_port_removable()
2541 dev_set_removable(&udev->dev, DEVICE_REMOVABLE); in set_usb_port_removable()
2543 dev_set_removable(&udev->dev, DEVICE_FIXED); in set_usb_port_removable()
2548 * usb_new_device - perform initial device setup (usbcore-internal)
2561 * Only the hub driver or root-hub registrar should ever call this.
2572 if (udev->parent) { in usb_new_device()
2573 /* Initialize non-root-hub device wakeup to disabled; in usb_new_device()
2577 device_init_wakeup(&udev->dev, 0); in usb_new_device()
2580 /* Tell the runtime-PM framework the device is active */ in usb_new_device()
2581 pm_runtime_set_active(&udev->dev); in usb_new_device()
2582 pm_runtime_get_noresume(&udev->dev); in usb_new_device()
2583 pm_runtime_use_autosuspend(&udev->dev); in usb_new_device()
2584 pm_runtime_enable(&udev->dev); in usb_new_device()
2586 /* By default, forbid autosuspend for all devices. It will be in usb_new_device()
2594 dev_dbg(&udev->dev, "udev %d, busnum %d, minor = %d\n", in usb_new_device()
2595 udev->devnum, udev->bus->busnum, in usb_new_device()
2596 (((udev->bus->busnum-1) * 128) + (udev->devnum-1))); in usb_new_device()
2597 /* export the usbdev device-node for libusb */ in usb_new_device()
2598 udev->dev.devt = MKDEV(USB_DEVICE_MAJOR, in usb_new_device()
2599 (((udev->bus->busnum-1) * 128) + (udev->devnum-1))); in usb_new_device()
2604 if (udev->serial) in usb_new_device()
2605 add_device_randomness(udev->serial, strlen(udev->serial)); in usb_new_device()
2606 if (udev->product) in usb_new_device()
2607 add_device_randomness(udev->product, strlen(udev->product)); in usb_new_device()
2608 if (udev->manufacturer) in usb_new_device()
2609 add_device_randomness(udev->manufacturer, in usb_new_device()
2610 strlen(udev->manufacturer)); in usb_new_device()
2612 device_enable_async_suspend(&udev->dev); in usb_new_device()
2614 /* check whether the hub or firmware marks this port as non-removable */ in usb_new_device()
2618 * for configuring the device and invoking the add-device in usb_new_device()
2621 err = device_add(&udev->dev); in usb_new_device()
2623 dev_err(&udev->dev, "can't device_add, error %d\n", err); in usb_new_device()
2628 if (udev->parent) { in usb_new_device()
2629 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_new_device()
2630 int port1 = udev->portnum; in usb_new_device()
2631 struct usb_port *port_dev = hub->ports[port1 - 1]; in usb_new_device()
2633 err = sysfs_create_link(&udev->dev.kobj, in usb_new_device()
2634 &port_dev->dev.kobj, "port"); in usb_new_device()
2638 err = sysfs_create_link(&port_dev->dev.kobj, in usb_new_device()
2639 &udev->dev.kobj, "device"); in usb_new_device()
2641 sysfs_remove_link(&udev->dev.kobj, "port"); in usb_new_device()
2645 if (!test_and_set_bit(port1, hub->child_usage_bits)) in usb_new_device()
2646 pm_runtime_get_sync(&port_dev->dev); in usb_new_device()
2649 (void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev); in usb_new_device()
2651 pm_runtime_put_sync_autosuspend(&udev->dev); in usb_new_device()
2655 device_del(&udev->dev); in usb_new_device()
2658 pm_runtime_disable(&udev->dev); in usb_new_device()
2659 pm_runtime_set_suspended(&udev->dev); in usb_new_device()
2665 * usb_deauthorize_device - deauthorize a device (usbcore-internal)
2679 if (usb_dev->authorized == 0) in usb_deauthorize_device()
2682 usb_dev->authorized = 0; in usb_deauthorize_device()
2683 usb_set_configuration(usb_dev, -1); in usb_deauthorize_device()
2696 if (usb_dev->authorized == 1) in usb_authorize_device()
2701 dev_err(&usb_dev->dev, in usb_authorize_device()
2706 usb_dev->authorized = 1; in usb_authorize_device()
2714 dev_err(&usb_dev->dev, in usb_authorize_device()
2720 dev_info(&usb_dev->dev, "authorized to connect\n"); in usb_authorize_device()
2730 * get_port_ssp_rate - Match the extended port status to SSP rate
2748 if (!hdev->bos) in get_port_ssp_rate()
2751 ssp_cap = hdev->bos->ssp_cap; in get_port_ssp_rate()
2758 ssac = le32_to_cpu(ssp_cap->bmAttributes) & in get_port_ssp_rate()
2764 attr = le32_to_cpu(ssp_cap->bmSublinkSpeedAttr[i]); in get_port_ssp_rate()
2835 (port_dev->quirks & USB_PORT_QUIRK_OLD_SCHEME) || in use_new_scheme()
2845 if (udev->speed >= USB_SPEED_SUPER) in use_new_scheme()
2866 if (!hub_is_superspeed(hub->hdev)) in hub_port_warm_reset_required()
2869 if (test_bit(port1, hub->warm_reset_bits)) in hub_port_warm_reset_required()
2892 if (hub_is_superspeedplus(hub->hdev)) in hub_port_wait_reset()
2907 * to re-establish a connection after the reset is complete, in hub_port_wait_reset()
2908 * so also wait for the connection to be re-established. in hub_port_wait_reset()
2918 dev_dbg(&hub->ports[port1 - 1]->dev, in hub_port_wait_reset()
2924 return -EBUSY; in hub_port_wait_reset()
2927 return -ENOTCONN; in hub_port_wait_reset()
2931 return -ENOTCONN; in hub_port_wait_reset()
2935 * but the device may have successfully re-connected. Ignore it. in hub_port_wait_reset()
2937 if (!hub_is_superspeed(hub->hdev) && in hub_port_wait_reset()
2939 usb_clear_port_feature(hub->hdev, port1, in hub_port_wait_reset()
2941 return -EAGAIN; in hub_port_wait_reset()
2945 return -EBUSY; in hub_port_wait_reset()
2950 if (hub_is_superspeedplus(hub->hdev)) { in hub_port_wait_reset()
2952 udev->rx_lanes = USB_EXT_PORT_RX_LANES(ext_portstatus) + 1; in hub_port_wait_reset()
2953 udev->tx_lanes = USB_EXT_PORT_TX_LANES(ext_portstatus) + 1; in hub_port_wait_reset()
2954 udev->ssp_rate = get_port_ssp_rate(hub->hdev, ext_portstatus); in hub_port_wait_reset()
2956 udev->rx_lanes = 1; in hub_port_wait_reset()
2957 udev->tx_lanes = 1; in hub_port_wait_reset()
2958 udev->ssp_rate = USB_SSP_GEN_UNKNOWN; in hub_port_wait_reset()
2960 if (udev->ssp_rate != USB_SSP_GEN_UNKNOWN) in hub_port_wait_reset()
2961 udev->speed = USB_SPEED_SUPER_PLUS; in hub_port_wait_reset()
2962 else if (hub_is_superspeed(hub->hdev)) in hub_port_wait_reset()
2963 udev->speed = USB_SPEED_SUPER; in hub_port_wait_reset()
2965 udev->speed = USB_SPEED_HIGH; in hub_port_wait_reset()
2967 udev->speed = USB_SPEED_LOW; in hub_port_wait_reset()
2969 udev->speed = USB_SPEED_FULL; in hub_port_wait_reset()
2979 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_reset()
2982 if (!hub_is_superspeed(hub->hdev)) { in hub_port_reset()
2984 dev_err(hub->intfdev, "only USB3 hub support " in hub_port_reset()
2986 return -EINVAL; in hub_port_reset()
3003 clear_bit(port1, hub->warm_reset_bits); in hub_port_reset()
3007 status = set_port_feature(hub->hdev, port1, (warm ? in hub_port_reset()
3010 if (status == -ENODEV) { in hub_port_reset()
3013 dev_err(&port_dev->dev, in hub_port_reset()
3019 if (status && status != -ENOTCONN && status != -ENODEV) in hub_port_reset()
3020 dev_dbg(hub->intfdev, in hub_port_reset()
3029 if (status == 0 || status == -ENOTCONN || status == -ENODEV || in hub_port_reset()
3030 (status == -EBUSY && i == PORT_RESET_TRIES - 1)) { in hub_port_reset()
3031 usb_clear_port_feature(hub->hdev, port1, in hub_port_reset()
3034 if (!hub_is_superspeed(hub->hdev)) in hub_port_reset()
3037 usb_clear_port_feature(hub->hdev, port1, in hub_port_reset()
3039 usb_clear_port_feature(hub->hdev, port1, in hub_port_reset()
3043 usb_clear_port_feature(hub->hdev, port1, in hub_port_reset()
3048 * state, re-issue the warm reset. in hub_port_reset()
3063 dev_dbg(&port_dev->dev, in hub_port_reset()
3069 dev_dbg(&port_dev->dev, in hub_port_reset()
3075 dev_err(&port_dev->dev, "Cannot enable. Maybe the USB cable is bad?\n"); in hub_port_reset()
3079 if (port_dev->quirks & USB_PORT_QUIRK_FAST_ENUM) in hub_port_reset()
3086 if (hub->hdev->quirks & USB_QUIRK_HUB_SLOW_RESET) in hub_port_reset()
3093 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in hub_port_reset()
3099 if (hcd->driver->reset_device) in hub_port_reset()
3100 hcd->driver->reset_device(hcd, udev); in hub_port_reset()
3109 if (!hub_is_superspeed(hub->hdev)) in hub_port_reset()
3116 * hub_port_stop_enumerate - stop USB enumeration or ignore port events
3135 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_stop_enumerate()
3137 if (port_dev->early_stop) { in hub_port_stop_enumerate()
3138 if (port_dev->ignore_event) in hub_port_stop_enumerate()
3150 port_dev->ignore_event = 1; in hub_port_stop_enumerate()
3152 port_dev->ignore_event = 0; in hub_port_stop_enumerate()
3154 return port_dev->ignore_event; in hub_port_stop_enumerate()
3162 if (hub_is_superspeed(hub->hdev)) { in usb_port_is_power_on()
3174 __acquires(&port_dev->status_lock) in usb_lock_port()
3176 mutex_lock(&port_dev->status_lock); in usb_lock_port()
3177 __acquire(&port_dev->status_lock); in usb_lock_port()
3181 __releases(&port_dev->status_lock) in usb_unlock_port()
3183 mutex_unlock(&port_dev->status_lock); in usb_unlock_port()
3184 __release(&port_dev->status_lock); in usb_unlock_port()
3194 if (hub_is_superspeed(hub->hdev)) { in port_is_suspended()
3207 * is ready for a reset-resume, or should be disconnected.
3213 struct usb_port *port_dev = hub->ports[port1 - 1]; in check_port_resume_type()
3218 if (status == 0 && udev->reset_resume in check_port_resume_type()
3226 status = -ENODEV; in check_port_resume_type()
3228 if (retries--) { in check_port_resume_type()
3234 status = -ENODEV; in check_port_resume_type()
3238 * so try a reset-resume instead. in check_port_resume_type()
3240 else if (!(portstatus & USB_PORT_STAT_ENABLE) && !udev->reset_resume) { in check_port_resume_type()
3241 if (udev->persist_enabled) in check_port_resume_type()
3242 udev->reset_resume = 1; in check_port_resume_type()
3244 status = -ENODEV; in check_port_resume_type()
3248 dev_dbg(&port_dev->dev, "status %04x.%04x after resume, %d\n", in check_port_resume_type()
3250 } else if (udev->reset_resume) { in check_port_resume_type()
3252 /* Late port handoff can set status-change bits */ in check_port_resume_type()
3254 usb_clear_port_feature(hub->hdev, port1, in check_port_resume_type()
3257 usb_clear_port_feature(hub->hdev, port1, in check_port_resume_type()
3261 * Whatever made this reset-resume necessary may have in check_port_resume_type()
3262 * turned on the port1 bit in hub->change_bits. But after in check_port_resume_type()
3263 * a successful reset-resume we want the bit to be clear; in check_port_resume_type()
3265 * following the reset-resume. in check_port_resume_type()
3267 clear_bit(port1, hub->change_bits); in check_port_resume_type()
3275 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_disable_ltm()
3278 if (!usb_device_supports_ltm(hcd->self.root_hub) || in usb_disable_ltm()
3285 if (!udev->actconfig) in usb_disable_ltm()
3297 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_enable_ltm()
3300 if (!usb_device_supports_ltm(hcd->self.root_hub) || in usb_enable_ltm()
3307 if (!udev->actconfig) in usb_enable_ltm()
3318 * usb_enable_remote_wakeup - enable remote wakeup for a device
3321 * For USB-2 devices: Set the device's remote wakeup feature.
3323 * For USB-3 devices: Assume there's only one function on the device and
3329 if (udev->speed < USB_SPEED_SUPER) in usb_enable_remote_wakeup()
3344 * usb_disable_remote_wakeup - disable remote wakeup for a device
3347 * For USB-2 devices: Clear the device's remote wakeup feature.
3349 * For USB-3 devices: Assume there's only one function on the device and
3355 if (udev->speed < USB_SPEED_SUPER) in usb_disable_remote_wakeup()
3367 /* Count of wakeup-enabled devices at or below udev */
3372 return udev->do_remote_wakeup + in usb_wakeup_enabled_descendants()
3373 (hub ? hub->wakeup_enabled_descendants : 0); in usb_wakeup_enabled_descendants()
3378 * usb_port_suspend - suspend a usb device's upstream port
3401 * between a pair of dual-role devices. That will change roles, such
3402 * as from A-Host to A-Peripheral or from B-Host back to B-Peripheral.
3408 * - suspend, resume ... when the VBUS power link stays live
3409 * - suspend, disconnect ... VBUS lost
3412 * normal re-enumeration procedures, starting with enabling VBUS power.
3413 * Other than re-initializing the hub (plug/unplug, except for root hubs),
3417 * If Runtime PM isn't enabled or used, non-SuperSpeed devices may not get
3419 * hub is suspended). Nevertheless, we change @udev->state to
3421 * upstream port setting is stored in @udev->port_is_suspended.
3427 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_suspend()
3428 struct usb_port *port_dev = hub->ports[udev->portnum - 1]; in usb_port_suspend()
3429 int port1 = udev->portnum; in usb_port_suspend()
3441 if (udev->do_remote_wakeup) { in usb_port_suspend()
3444 dev_dbg(&udev->dev, "won't remote wakeup, status %d\n", in usb_port_suspend()
3446 /* bail if autosuspend is requested */ in usb_port_suspend()
3456 dev_err(&udev->dev, "Failed to disable LTM before suspend\n"); in usb_port_suspend()
3457 status = -ENOMEM; in usb_port_suspend()
3463 if (hub_is_superspeed(hub->hdev)) in usb_port_suspend()
3468 * on individual USB-2 ports. The devices will automatically go in usb_port_suspend()
3478 status = set_port_feature(hub->hdev, port1, in usb_port_suspend()
3488 if (status == -ETIMEDOUT) { in usb_port_suspend()
3496 dev_dbg(&port_dev->dev, in usb_port_suspend()
3505 dev_dbg(&port_dev->dev, "can't suspend, status %d\n", status); in usb_port_suspend()
3513 if (udev->do_remote_wakeup) in usb_port_suspend()
3522 dev_dbg(&udev->dev, "usb %ssuspend, wakeup %d\n", in usb_port_suspend()
3523 (PMSG_IS_AUTO(msg) ? "auto-" : ""), in usb_port_suspend()
3524 udev->do_remote_wakeup); in usb_port_suspend()
3526 udev->port_is_suspended = 1; in usb_port_suspend()
3534 if (status == 0 && !udev->do_remote_wakeup && udev->persist_enabled in usb_port_suspend()
3535 && test_and_clear_bit(port1, hub->child_usage_bits)) in usb_port_suspend()
3536 pm_runtime_put_sync(&port_dev->dev); in usb_port_suspend()
3538 usb_mark_last_busy(hub->hdev); in usb_port_suspend()
3552 * If @udev->reset_resume is set then the device is reset before the
3561 dev_dbg(&udev->dev, "%s\n", in finish_port_resume()
3562 udev->reset_resume ? "finish reset-resume" : "finish resume"); in finish_port_resume()
3569 usb_set_device_state(udev, udev->actconfig in finish_port_resume()
3578 if (udev->reset_resume) { in finish_port_resume()
3581 * we don't want to perform a reset-resume. We'll fail the in finish_port_resume()
3586 if (udev->quirks & USB_QUIRK_RESET) in finish_port_resume()
3587 status = -ENODEV; in finish_port_resume()
3600 /* If a normal resume failed, try doing a reset-resume */ in finish_port_resume()
3601 if (status && !udev->reset_resume && udev->persist_enabled) { in finish_port_resume()
3602 dev_dbg(&udev->dev, "retry with reset-resume\n"); in finish_port_resume()
3603 udev->reset_resume = 1; in finish_port_resume()
3609 dev_dbg(&udev->dev, "gone after usb resume? status %d\n", in finish_port_resume()
3615 * udev->reset_resume in finish_port_resume()
3617 } else if (udev->actconfig && !udev->reset_resume) { in finish_port_resume()
3618 if (udev->speed < USB_SPEED_SUPER) { in finish_port_resume()
3630 dev_dbg(&udev->dev, in finish_port_resume()
3672 status = -ENODEV; in wait_for_connected()
3679 dev_dbg(&udev->dev, "Waited %dms for CONNECT\n", delay_ms); in wait_for_connected()
3684 * usb_port_resume - re-activate a suspended usb device's upstream port
3685 * @udev: device to re-activate, not a root hub
3688 * This will re-activate the suspended device, increasing power usage
3694 * If @udev->reset_resume is set then this routine won't check that the
3702 * for mass-storage devices containing mounted filesystems, since the
3719 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_resume()
3720 struct usb_port *port_dev = hub->ports[udev->portnum - 1]; in usb_port_resume()
3721 int port1 = udev->portnum; in usb_port_resume()
3725 if (!test_and_set_bit(port1, hub->child_usage_bits)) { in usb_port_resume()
3726 status = pm_runtime_resume_and_get(&port_dev->dev); in usb_port_resume()
3728 dev_dbg(&udev->dev, "can't resume usb port, status %d\n", in usb_port_resume()
3736 /* Skip the initial Clear-Suspend step for a remote wakeup */ in usb_port_resume()
3740 pm_wakeup_event(&udev->dev, 0); in usb_port_resume()
3745 if (hub_is_superspeed(hub->hdev)) in usb_port_resume()
3748 status = usb_clear_port_feature(hub->hdev, in usb_port_resume()
3751 dev_dbg(&port_dev->dev, "can't resume, status %d\n", status); in usb_port_resume()
3754 dev_dbg(&udev->dev, "usb %sresume\n", in usb_port_resume()
3755 (PMSG_IS_AUTO(msg) ? "auto-" : "")); in usb_port_resume()
3767 udev->port_is_suspended = 0; in usb_port_resume()
3768 if (hub_is_superspeed(hub->hdev)) { in usb_port_resume()
3770 usb_clear_port_feature(hub->hdev, port1, in usb_port_resume()
3774 usb_clear_port_feature(hub->hdev, port1, in usb_port_resume()
3782 if (udev->persist_enabled) in usb_port_resume()
3791 dev_dbg(&udev->dev, "can't resume, status %d\n", status); in usb_port_resume()
3811 if (udev->state == USB_STATE_SUSPENDED) { in usb_remote_wakeup()
3812 dev_dbg(&udev->dev, "usb %sresume\n", "wakeup-"); in usb_remote_wakeup()
3826 __must_hold(&port_dev->status_lock) in hub_handle_remote_wakeup()
3828 struct usb_port *port_dev = hub->ports[port - 1]; in hub_handle_remote_wakeup()
3835 hdev = hub->hdev; in hub_handle_remote_wakeup()
3836 udev = port_dev->child; in hub_handle_remote_wakeup()
3843 if (!udev || udev->state != USB_STATE_SUSPENDED || in hub_handle_remote_wakeup()
3860 ret = -ENODEV; in hub_handle_remote_wakeup()
3863 dev_dbg(&port_dev->dev, "resume, status %d\n", ret); in hub_handle_remote_wakeup()
3871 for (port1 = 1; port1 <= hub->hdev->maxchild; ++port1) { in check_ports_changed()
3885 struct usb_device *hdev = hub->hdev; in hub_suspend()
3890 * Also, add up the number of wakeup-enabled descendants. in hub_suspend()
3892 hub->wakeup_enabled_descendants = 0; in hub_suspend()
3893 for (port1 = 1; port1 <= hdev->maxchild; port1++) { in hub_suspend()
3894 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_suspend()
3895 struct usb_device *udev = port_dev->child; in hub_suspend()
3897 if (udev && udev->can_submit) { in hub_suspend()
3898 dev_warn(&port_dev->dev, "device %s not suspended yet\n", in hub_suspend()
3899 dev_name(&udev->dev)); in hub_suspend()
3901 return -EBUSY; in hub_suspend()
3904 hub->wakeup_enabled_descendants += in hub_suspend()
3908 if (hdev->do_remote_wakeup && hub->quirk_check_port_auto_suspend) { in hub_suspend()
3912 return -EBUSY; in hub_suspend()
3913 pm_wakeup_event(&hdev->dev, 2000); in hub_suspend()
3917 if (hub_is_superspeed(hdev) && hdev->do_remote_wakeup) { in hub_suspend()
3919 for (port1 = 1; port1 <= hdev->maxchild; port1++) { in hub_suspend()
3929 dev_dbg(&intf->dev, "%s\n", __func__); in hub_suspend()
3939 struct usb_device *hdev = hub->hdev; in report_wakeup_requests()
3945 if (hdev->parent) in report_wakeup_requests()
3948 hcd = bus_to_hcd(hdev->bus); in report_wakeup_requests()
3949 if (hcd->driver->get_resuming_ports) { in report_wakeup_requests()
3959 resuming_ports = hcd->driver->get_resuming_ports(hcd); in report_wakeup_requests()
3960 for (i = 0; i < hdev->maxchild; ++i) { in report_wakeup_requests()
3962 udev = hub->ports[i]->child; in report_wakeup_requests()
3964 pm_wakeup_event(&udev->dev, 0); in report_wakeup_requests()
3974 dev_dbg(&intf->dev, "%s\n", __func__); in hub_resume()
3991 dev_dbg(&intf->dev, "%s\n", __func__); in hub_reset_resume()
3997 * usb_root_hub_lost_power - called by HCD if the root hub lost Vbus power
4004 * power-session recovery for all the "USB-PERSIST"-enabled child devices;
4009 dev_notice(&rhdev->dev, "root hub lost power or was reset\n"); in usb_root_hub_lost_power()
4010 rhdev->reset_resume = 1; in usb_root_hub_lost_power()
4023 * device-initiated U1 or U2. This lets the device know the exit latencies from
4039 if (!udev->parent || udev->speed < USB_SPEED_SUPER || !udev->lpm_capable) in usb_req_set_sel()
4043 u1_sel = DIV_ROUND_UP(udev->u1_params.sel, 1000); in usb_req_set_sel()
4044 u1_pel = DIV_ROUND_UP(udev->u1_params.pel, 1000); in usb_req_set_sel()
4045 u2_sel = DIV_ROUND_UP(udev->u2_params.sel, 1000); in usb_req_set_sel()
4046 u2_pel = DIV_ROUND_UP(udev->u2_params.pel, 1000); in usb_req_set_sel()
4053 * latency for the link state, and could start a device-initiated in usb_req_set_sel()
4060 dev_dbg(&udev->dev, "Device-initiated U1/U2 disabled due to long SEL or PEL\n"); in usb_req_set_sel()
4061 return -EINVAL; in usb_req_set_sel()
4071 return -ENOMEM; in usb_req_set_sel()
4073 sel_values->u1_sel = u1_sel; in usb_req_set_sel()
4074 sel_values->u1_pel = u1_pel; in usb_req_set_sel()
4075 sel_values->u2_sel = cpu_to_le16(u2_sel); in usb_req_set_sel()
4076 sel_values->u2_pel = cpu_to_le16(u2_pel); in usb_req_set_sel()
4087 udev->lpm_devinit_allow = 1; in usb_req_set_sel()
4093 * Enable or disable device-initiated U1 or U2 transitions.
4109 dev_warn(&udev->dev, "%s: Can't %s non-U1 or U2 state.\n", in usb_set_device_initiated_lpm()
4111 return -EINVAL; in usb_set_device_initiated_lpm()
4114 if (udev->state != USB_STATE_CONFIGURED) { in usb_set_device_initiated_lpm()
4115 dev_dbg(&udev->dev, "%s: Can't %s %s state " in usb_set_device_initiated_lpm()
4124 * Now send the control transfer to enable device-initiated LPM in usb_set_device_initiated_lpm()
4142 dev_warn(&udev->dev, "%s of device-initiated %s failed.\n", in usb_set_device_initiated_lpm()
4145 return -EBUSY; in usb_set_device_initiated_lpm()
4164 dev_warn(&udev->dev, "%s: Can't set timeout for non-U1 or U2 state.\n", in usb_set_lpm_timeout()
4166 return -EINVAL; in usb_set_lpm_timeout()
4171 dev_warn(&udev->dev, "Failed to set %s timeout to 0x%x, " in usb_set_lpm_timeout()
4174 return -EINVAL; in usb_set_lpm_timeout()
4177 ret = set_port_feature(udev->parent, in usb_set_lpm_timeout()
4178 USB_PORT_LPM_TIMEOUT(timeout) | udev->portnum, in usb_set_lpm_timeout()
4181 dev_warn(&udev->dev, "Failed to set %s timeout to 0x%x," in usb_set_lpm_timeout()
4184 return -EBUSY; in usb_set_lpm_timeout()
4187 udev->u1_params.timeout = timeout; in usb_set_lpm_timeout()
4189 udev->u2_params.timeout = timeout; in usb_set_lpm_timeout()
4204 if (!udev->lpm_devinit_allow) in usb_device_may_initiate_lpm()
4208 sel = DIV_ROUND_UP(udev->u1_params.sel, 1000); in usb_device_may_initiate_lpm()
4210 sel = DIV_ROUND_UP(udev->u2_params.sel, 1000); in usb_device_may_initiate_lpm()
4214 for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) { in usb_device_may_initiate_lpm()
4219 intf = udev->actconfig->interface[i]; in usb_device_may_initiate_lpm()
4223 for (j = 0; j < intf->cur_altsetting->desc.bNumEndpoints; j++) { in usb_device_may_initiate_lpm()
4224 desc = &intf->cur_altsetting->endpoint[j].desc; in usb_device_may_initiate_lpm()
4228 interval = (1 << (desc->bInterval - 1)) * 125; in usb_device_may_initiate_lpm()
4238 * Enable the hub-initiated U1/U2 idle timeouts, and enable device-initiated
4242 * control transfers to set the hub timeout or enable device-initiated U1/U2
4245 * If the control transfer to enable device-initiated U1/U2 entry fails, then
4246 * hub-initiated U1/U2 will be disabled.
4260 if (!udev->bos) in usb_enable_link_state()
4263 u1_mel = udev->bos->ss_cap->bU1devExitLat; in usb_enable_link_state()
4264 u2_mel = udev->bos->ss_cap->bU2DevExitLat; in usb_enable_link_state()
4279 timeout = hcd->driver->enable_usb3_lpm_timeout(hcd, udev, state); in usb_enable_link_state()
4286 dev_warn(&udev->dev, "Could not enable %s link state, " in usb_enable_link_state()
4294 * device-initiated LPM won't be allowed either, so let the xHCI in usb_enable_link_state()
4297 hcd->driver->disable_usb3_lpm_timeout(hcd, udev, state); in usb_enable_link_state()
4304 if (udev->actconfig && in usb_enable_link_state()
4312 hcd->driver->disable_usb3_lpm_timeout(hcd, udev, state); in usb_enable_link_state()
4318 udev->usb3_lpm_u1_enabled = 1; in usb_enable_link_state()
4320 udev->usb3_lpm_u2_enabled = 1; in usb_enable_link_state()
4323 * Disable the hub-initiated U1/U2 idle timeouts, and disable device-initiated
4326 * If this function returns -EBUSY, the parent hub will still allow U1/U2 entry.
4329 * If zero is returned, device-initiated U1/U2 entry may still be enabled, but
4331 * still disallow device-initiated U1/U2 entry.
4345 dev_warn(&udev->dev, "%s: Can't disable non-U1 or U2 state.\n", in usb_disable_link_state()
4347 return -EINVAL; in usb_disable_link_state()
4351 return -EBUSY; in usb_disable_link_state()
4355 if (hcd->driver->disable_usb3_lpm_timeout(hcd, udev, state)) in usb_disable_link_state()
4356 dev_warn(&udev->dev, "Could not disable xHCI %s timeout, " in usb_disable_link_state()
4363 * timeout set to 0, no matter device-initiated LPM is disabled or in usb_disable_link_state()
4367 udev->usb3_lpm_u1_enabled = 0; in usb_disable_link_state()
4369 udev->usb3_lpm_u2_enabled = 0; in usb_disable_link_state()
4375 * Disable hub-initiated and device-initiated U1 and U2 entry.
4379 * lpm_disable_count, and will re-enable LPM if lpm_disable_count reaches zero.
4385 if (!udev || !udev->parent || in usb_disable_lpm()
4386 udev->speed < USB_SPEED_SUPER || in usb_disable_lpm()
4387 !udev->lpm_capable || in usb_disable_lpm()
4388 udev->state < USB_STATE_CONFIGURED) in usb_disable_lpm()
4391 hcd = bus_to_hcd(udev->bus); in usb_disable_lpm()
4392 if (!hcd || !hcd->driver->disable_usb3_lpm_timeout) in usb_disable_lpm()
4395 udev->lpm_disable_count++; in usb_disable_lpm()
4396 if ((udev->u1_params.timeout == 0 && udev->u2_params.timeout == 0)) in usb_disable_lpm()
4409 return -EBUSY; in usb_disable_lpm()
4416 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_unlocked_disable_lpm()
4420 return -EINVAL; in usb_unlocked_disable_lpm()
4422 mutex_lock(hcd->bandwidth_mutex); in usb_unlocked_disable_lpm()
4424 mutex_unlock(hcd->bandwidth_mutex); in usb_unlocked_disable_lpm()
4431 * Attempt to enable device-initiated and hub-initiated U1 and U2 entry. The
4444 if (!udev || !udev->parent || in usb_enable_lpm()
4445 udev->speed < USB_SPEED_SUPER || in usb_enable_lpm()
4446 !udev->lpm_capable || in usb_enable_lpm()
4447 udev->state < USB_STATE_CONFIGURED) in usb_enable_lpm()
4450 udev->lpm_disable_count--; in usb_enable_lpm()
4451 hcd = bus_to_hcd(udev->bus); in usb_enable_lpm()
4455 if (!hcd || !hcd->driver->enable_usb3_lpm_timeout || in usb_enable_lpm()
4456 !hcd->driver->disable_usb3_lpm_timeout) in usb_enable_lpm()
4459 if (udev->lpm_disable_count > 0) in usb_enable_lpm()
4462 hub = usb_hub_to_struct_hub(udev->parent); in usb_enable_lpm()
4466 port_dev = hub->ports[udev->portnum - 1]; in usb_enable_lpm()
4468 if (port_dev->usb3_lpm_u1_permit) in usb_enable_lpm()
4471 if (port_dev->usb3_lpm_u2_permit) in usb_enable_lpm()
4479 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_unlocked_enable_lpm()
4484 mutex_lock(hcd->bandwidth_mutex); in usb_unlocked_enable_lpm()
4486 mutex_unlock(hcd->bandwidth_mutex); in usb_unlocked_enable_lpm()
4494 struct usb_device *udev = port_dev->child; in hub_usb3_port_prepare_disable()
4497 if (udev && udev->port_is_suspended && udev->do_remote_wakeup) { in hub_usb3_port_prepare_disable()
4498 ret = hub_set_port_link_state(hub, port_dev->portnum, in hub_usb3_port_prepare_disable()
4505 dev_warn(&udev->dev, in hub_usb3_port_prepare_disable()
4507 udev->do_remote_wakeup = 0; in hub_usb3_port_prepare_disable()
4561 * USB-3 does not have a similar link state as USB-2 that will avoid negotiating
4562 * a connection with a plugged-in cable but will signal the host when the cable
4563 * is unplugged. Disable remote wake and set link state to U3 for USB-3 devices
4567 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_disable()
4568 struct usb_device *hdev = hub->hdev; in hub_port_disable()
4571 if (!hub->error) { in hub_port_disable()
4572 if (hub_is_superspeed(hub->hdev)) { in hub_port_disable()
4574 ret = hub_set_port_link_state(hub, port_dev->portnum, in hub_port_disable()
4581 if (port_dev->child && set_state) in hub_port_disable()
4582 usb_set_device_state(port_dev->child, USB_STATE_NOTATTACHED); in hub_port_disable()
4583 if (ret && ret != -ENODEV) in hub_port_disable()
4584 dev_err(&port_dev->dev, "cannot disable (err = %d)\n", ret); in hub_port_disable()
4589 * usb_port_disable - disable a usb device's upstream port
4597 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_disable()
4599 return hub_port_disable(hub, udev->portnum, 0); in usb_port_disable()
4602 /* USB 2.0 spec, 7.1.7.3 / fig 7-29:
4605 * of 100ms at least for debounce and power-settling. The corresponding
4608 * Apparently there are some bluetooth and irda-dongles and a number of
4609 * low-speed devices for which this debounce period may last over a second.
4610 * Not covered by the spec - but easy to deal with.
4613 * connection isn't stable by then it returns -ETIMEDOUT. It checks
4623 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_debounce()
4643 usb_clear_port_feature(hub->hdev, port1, in hub_port_debounce()
4652 dev_dbg(&port_dev->dev, "debounce total %dms stable %dms status 0x%x\n", in hub_port_debounce()
4656 return -ETIMEDOUT; in hub_port_debounce()
4664 usb_enable_endpoint(udev, &udev->ep0, true); in usb_ep0_reinit()
4675 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in hub_set_address()
4676 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in hub_set_address()
4678 if (hub->hdev->quirks & USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT) in hub_set_address()
4685 if (!hcd->driver->address_device && devnum <= 1) in hub_set_address()
4686 return -EINVAL; in hub_set_address()
4687 if (udev->state == USB_STATE_ADDRESS) in hub_set_address()
4689 if (udev->state != USB_STATE_DEFAULT) in hub_set_address()
4690 return -EINVAL; in hub_set_address()
4691 if (hcd->driver->address_device) in hub_set_address()
4692 retval = hcd->driver->address_device(hcd, udev, timeout_ms); in hub_set_address()
4717 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in hub_set_initial_usb2_lpm_policy()
4720 if (!udev->usb2_hw_lpm_capable || !udev->bos) in hub_set_initial_usb2_lpm_policy()
4724 connect_type = hub->ports[udev->portnum - 1]->connect_type; in hub_set_initial_usb2_lpm_policy()
4726 if ((udev->bos->ext_cap->bmAttributes & cpu_to_le32(USB_BESL_SUPPORT)) || in hub_set_initial_usb2_lpm_policy()
4728 udev->usb2_hw_lpm_allowed = 1; in hub_set_initial_usb2_lpm_policy()
4735 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in hub_enable_device()
4737 if (!hcd->driver->enable_device) in hub_enable_device()
4739 if (udev->state == USB_STATE_ADDRESS) in hub_enable_device()
4741 if (udev->state != USB_STATE_DEFAULT) in hub_enable_device()
4742 return -EINVAL; in hub_enable_device()
4744 return hcd->driver->enable_device(hcd, udev); in hub_enable_device()
4774 buf->bDescriptorType = buf->bMaxPacketSize0 = 0; in get_bMaxPacketSize0()
4780 switch (buf->bMaxPacketSize0) { in get_bMaxPacketSize0()
4782 if (buf->bDescriptorType == USB_DT_DEVICE) { in get_bMaxPacketSize0()
4783 rc = buf->bMaxPacketSize0; in get_bMaxPacketSize0()
4789 rc = -EPROTO; in get_bMaxPacketSize0()
4797 * attempt, lest we get into a time-out/reset loop. in get_bMaxPacketSize0()
4799 if (rc > 0 || (rc == -ETIMEDOUT && first_time && in get_bMaxPacketSize0()
4800 udev->speed > USB_SPEED_FULL)) in get_bMaxPacketSize0()
4812 * If this is called for an already-existing device (as part of
4820 * @udev->descriptor. For an already existing device, @dev_descr
4821 * must be non-NULL. The device descriptor will be stored there,
4822 * not in @udev->descriptor, because descriptors for registered
4829 struct usb_device *hdev = hub->hdev; in hub_port_init()
4830 struct usb_hcd *hcd = bus_to_hcd(hdev->bus); in hub_port_init()
4831 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_init()
4834 enum usb_device_speed oldspeed = udev->speed; in hub_port_init()
4836 int devnum = udev->devnum; in hub_port_init()
4845 return -ENOMEM; in hub_port_init()
4847 /* root hub ports have a slightly longer reset period in hub_port_init()
4850 if (!hdev->parent) { in hub_port_init()
4852 if (port1 == hdev->bus->otg_port) in hub_port_init()
4853 hdev->bus->b_hnp_enable = 0; in hub_port_init()
4868 retval = -ENODEV; in hub_port_init()
4871 if (oldspeed != USB_SPEED_UNKNOWN && oldspeed != udev->speed && in hub_port_init()
4872 !(oldspeed == USB_SPEED_SUPER && udev->speed > oldspeed)) { in hub_port_init()
4873 dev_dbg(&udev->dev, "device reset changed speed!\n"); in hub_port_init()
4876 oldspeed = udev->speed; in hub_port_init()
4882 switch (udev->speed) { in hub_port_init()
4885 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(512); in hub_port_init()
4888 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64); in hub_port_init()
4895 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64); in hub_port_init()
4898 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(8); in hub_port_init()
4905 speed = usb_speed_string(udev->speed); in hub_port_init()
4912 * platform device is usually a dual-role USB controller device. in hub_port_init()
4914 if (udev->bus->controller->driver) in hub_port_init()
4915 driver_name = udev->bus->controller->driver->name; in hub_port_init()
4917 driver_name = udev->bus->sysdev->driver->name; in hub_port_init()
4919 if (udev->speed < USB_SPEED_SUPER) in hub_port_init()
4920 dev_info(&udev->dev, in hub_port_init()
4927 if (hdev->tt) { in hub_port_init()
4928 udev->tt = hdev->tt; in hub_port_init()
4929 udev->ttport = hdev->ttport; in hub_port_init()
4930 } else if (udev->speed != USB_SPEED_HIGH in hub_port_init()
4931 && hdev->speed == USB_SPEED_HIGH) { in hub_port_init()
4932 if (!hub->tt.hub) { in hub_port_init()
4933 dev_err(&udev->dev, "parent hub has no TT\n"); in hub_port_init()
4934 retval = -EINVAL; in hub_port_init()
4937 udev->tt = &hub->tt; in hub_port_init()
4938 udev->ttport = port1; in hub_port_init()
4948 * a 64-byte GET_DESCRIPTOR request. This is what Windows does, in hub_port_init()
4949 * so it may help with some non-standards-compliant devices. in hub_port_init()
4958 retval = -ENODEV; in hub_port_init()
4965 dev_err(&udev->dev, in hub_port_init()
4974 maxp0 != udev->descriptor.bMaxPacketSize0) { in hub_port_init()
4975 dev_err(&udev->dev, "device reset changed ep0 maxpacket size!\n"); in hub_port_init()
4976 retval = -ENODEV; in hub_port_init()
4983 if (oldspeed != udev->speed) { in hub_port_init()
4984 dev_dbg(&udev->dev, in hub_port_init()
4986 retval = -ENODEV; in hub_port_init()
4990 if (maxp0 != -ENODEV) in hub_port_init()
4991 dev_err(&udev->dev, "device descriptor read/64, error %d\n", in hub_port_init()
5005 if (retval != -ENODEV) in hub_port_init()
5006 dev_err(&udev->dev, "device not accepting address %d, error %d\n", in hub_port_init()
5010 if (udev->speed >= USB_SPEED_SUPER) { in hub_port_init()
5011 devnum = udev->devnum; in hub_port_init()
5012 dev_info(&udev->dev, in hub_port_init()
5014 (udev->config) ? "reset" : "new", in hub_port_init()
5015 (udev->speed == USB_SPEED_SUPER_PLUS) ? in hub_port_init()
5017 (udev->ssp_rate == USB_SSP_GEN_2x2) ? in hub_port_init()
5019 (udev->ssp_rate == USB_SSP_GEN_2x1) ? in hub_port_init()
5021 (udev->ssp_rate == USB_SSP_GEN_1x2) ? in hub_port_init()
5028 * - let SET_ADDRESS settle, some device hardware wants it in hub_port_init()
5029 * - read ep0 maxpacket even for high and low speed, in hub_port_init()
5039 if (retval != -ENODEV) in hub_port_init()
5040 dev_err(&udev->dev, in hub_port_init()
5046 if (!initial && maxp0 != udev->descriptor.bMaxPacketSize0) { in hub_port_init()
5047 dev_err(&udev->dev, "device reset changed ep0 maxpacket size!\n"); in hub_port_init()
5048 retval = -ENODEV; in hub_port_init()
5052 delay = udev->parent->hub_delay; in hub_port_init()
5053 udev->hub_delay = min_t(u32, delay, in hub_port_init()
5057 dev_dbg(&udev->dev, in hub_port_init()
5074 if (udev->speed >= USB_SPEED_SUPER) { in hub_port_init()
5080 if (usb_endpoint_maxp(&udev->ep0.desc) == i) { in hub_port_init()
5082 } else if (((udev->speed == USB_SPEED_FULL || in hub_port_init()
5083 udev->speed == USB_SPEED_HIGH) && in hub_port_init()
5085 (udev->speed >= USB_SPEED_SUPER && i > 0)) { in hub_port_init()
5087 if (udev->speed == USB_SPEED_FULL) in hub_port_init()
5088 dev_dbg(&udev->dev, "ep0 maxpacket = %d\n", i); in hub_port_init()
5090 dev_warn(&udev->dev, "Using ep0 maxpacket: %d\n", i); in hub_port_init()
5091 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(i); in hub_port_init()
5095 dev_err(&udev->dev, "Invalid ep0 maxpacket: %d\n", maxp0); in hub_port_init()
5096 retval = -EMSGSIZE; in hub_port_init()
5103 if (retval != -ENODEV) in hub_port_init()
5104 dev_err(&udev->dev, "device descriptor read/all, error %d\n", in hub_port_init()
5109 udev->descriptor = *descr; in hub_port_init()
5120 if ((udev->speed >= USB_SPEED_SUPER) && in hub_port_init()
5121 (le16_to_cpu(udev->descriptor.bcdUSB) < 0x0300)) { in hub_port_init()
5122 dev_err(&udev->dev, "got a wrong device descriptor, warm reset device\n"); in hub_port_init()
5124 retval = -EINVAL; in hub_port_init()
5130 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0201) { in hub_port_init()
5133 udev->lpm_capable = usb_device_supports_lpm(udev); in hub_port_init()
5134 udev->lpm_disable_count = 1; in hub_port_init()
5142 if (hcd->driver->update_device) in hub_port_init()
5143 hcd->driver->update_device(hcd, udev); in hub_port_init()
5160 if (udev->quirks & USB_QUIRK_DEVICE_QUALIFIER) in check_highspeed()
5170 dev_info(&udev->dev, "not running at top speed; " in check_highspeed()
5173 if (hub->has_indicators) { in check_highspeed()
5174 hub->indicator[port1-1] = INDICATOR_GREEN_BLINK; in check_highspeed()
5176 &hub->leds, 0); in check_highspeed()
5185 struct usb_device *hdev = hub->hdev; in hub_power_remaining()
5189 if (!hub->limited_power) in hub_power_remaining()
5192 remaining = hdev->bus_mA - hub->descriptor->bHubContrCurrent; in hub_power_remaining()
5193 for (port1 = 1; port1 <= hdev->maxchild; ++port1) { in hub_power_remaining()
5194 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_power_remaining()
5195 struct usb_device *udev = port_dev->child; in hub_power_remaining()
5210 if (udev->actconfig) in hub_power_remaining()
5211 delta = usb_get_max_power(udev, udev->actconfig); in hub_power_remaining()
5212 else if (port1 != udev->bus->otg_port || hdev->parent) in hub_power_remaining()
5216 if (delta > hub->mA_per_port) in hub_power_remaining()
5217 dev_warn(&port_dev->dev, "%dmA is over %umA budget!\n", in hub_power_remaining()
5218 delta, hub->mA_per_port); in hub_power_remaining()
5219 remaining -= delta; in hub_power_remaining()
5222 dev_warn(hub->intfdev, "%dmA over power budget!\n", in hub_power_remaining()
5223 -remaining); in hub_power_remaining()
5242 if (memcmp(&udev->descriptor, new_device_descriptor, in descriptors_changed()
5246 if ((old_bos && !udev->bos) || (!old_bos && udev->bos)) in descriptors_changed()
5248 if (udev->bos) { in descriptors_changed()
5249 len = le16_to_cpu(udev->bos->desc->wTotalLength); in descriptors_changed()
5250 if (len != le16_to_cpu(old_bos->desc->wTotalLength)) in descriptors_changed()
5252 if (memcmp(udev->bos->desc, old_bos->desc, len)) in descriptors_changed()
5262 if (udev->serial) in descriptors_changed()
5263 serial_len = strlen(udev->serial) + 1; in descriptors_changed()
5266 for (index = 0; index < udev->descriptor.bNumConfigurations; index++) { in descriptors_changed()
5267 old_length = le16_to_cpu(udev->config[index].desc.wTotalLength); in descriptors_changed()
5276 for (index = 0; index < udev->descriptor.bNumConfigurations; index++) { in descriptors_changed()
5277 old_length = le16_to_cpu(udev->config[index].desc.wTotalLength); in descriptors_changed()
5281 dev_dbg(&udev->dev, "config index %d, error %d\n", in descriptors_changed()
5286 if (memcmp(buf, udev->rawdescriptors[index], old_length) in descriptors_changed()
5288 dev_dbg(&udev->dev, "config index %d changed (#%d)\n", in descriptors_changed()
5290 ((struct usb_config_descriptor *) buf)-> in descriptors_changed()
5298 length = usb_string(udev, udev->descriptor.iSerialNumber, in descriptors_changed()
5301 dev_dbg(&udev->dev, "serial string error %d\n", in descriptors_changed()
5304 } else if (memcmp(buf, udev->serial, length) != 0) { in descriptors_changed()
5305 dev_dbg(&udev->dev, "serial string changed\n"); in descriptors_changed()
5317 int status = -ENODEV; in hub_port_connect()
5320 struct usb_device *hdev = hub->hdev; in hub_port_connect()
5321 struct usb_hcd *hcd = bus_to_hcd(hdev->bus); in hub_port_connect()
5322 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_connect()
5323 struct usb_device *udev = port_dev->child; in hub_port_connect()
5324 static int unreliable_port = -1; in hub_port_connect()
5329 if (hcd->usb_phy && !hdev->parent) in hub_port_connect()
5330 usb_phy_notify_disconnect(hcd->usb_phy, udev->speed); in hub_port_connect()
5331 usb_disconnect(&port_dev->child); in hub_port_connect()
5339 clear_bit(port1, hub->removed_bits); in hub_port_connect()
5345 if (status != -ENODEV && in hub_port_connect()
5348 dev_err(&port_dev->dev, "connect-debounce failed\n"); in hub_port_connect()
5360 test_bit(port1, hub->removed_bits)) { in hub_port_connect()
5368 && !port_dev->port_owner) in hub_port_connect()
5375 if (hub_is_superspeed(hub->hdev)) in hub_port_connect()
5384 status = -ENODEV; in hub_port_connect()
5389 mutex_lock(hcd->address0_mutex); in hub_port_connect()
5394 udev = usb_alloc_dev(hdev, hdev->bus, port1); in hub_port_connect()
5396 dev_err(&port_dev->dev, in hub_port_connect()
5398 mutex_unlock(hcd->address0_mutex); in hub_port_connect()
5404 udev->bus_mA = hub->mA_per_port; in hub_port_connect()
5405 udev->level = hdev->level + 1; in hub_port_connect()
5408 if (hub_is_superspeed(hub->hdev)) in hub_port_connect()
5409 udev->speed = USB_SPEED_SUPER; in hub_port_connect()
5411 udev->speed = USB_SPEED_UNKNOWN; in hub_port_connect()
5414 if (udev->devnum <= 0) { in hub_port_connect()
5415 status = -ENOTCONN; /* Don't retry */ in hub_port_connect()
5419 /* reset (non-USB 3.0 devices) and get descriptor */ in hub_port_connect()
5424 mutex_unlock(hcd->address0_mutex); in hub_port_connect()
5428 if (udev->quirks & USB_QUIRK_DELAY_INIT) in hub_port_connect()
5431 /* consecutive bus-powered hubs aren't reliable; they can in hub_port_connect()
5434 * (without reading syslog), even without per-port LEDs in hub_port_connect()
5437 if (udev->descriptor.bDeviceClass == USB_CLASS_HUB in hub_port_connect()
5438 && udev->bus_mA <= unit_load) { in hub_port_connect()
5444 dev_dbg(&udev->dev, "get status %d ?\n", status); in hub_port_connect()
5448 dev_err(&udev->dev, in hub_port_connect()
5449 "can't connect bus-powered hub " in hub_port_connect()
5451 if (hub->has_indicators) { in hub_port_connect()
5452 hub->indicator[port1-1] = in hub_port_connect()
5456 &hub->leds, 0); in hub_port_connect()
5458 status = -ENOTCONN; /* Don't retry */ in hub_port_connect()
5464 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0200 in hub_port_connect()
5465 && udev->speed == USB_SPEED_FULL in hub_port_connect()
5482 if (hdev->state == USB_STATE_NOTATTACHED) in hub_port_connect()
5483 status = -ENOTCONN; in hub_port_connect()
5485 port_dev->child = udev; in hub_port_connect()
5495 port_dev->child = NULL; in hub_port_connect()
5499 if (hcd->usb_phy && !hdev->parent) in hub_port_connect()
5500 usb_phy_notify_connect(hcd->usb_phy, in hub_port_connect()
5501 udev->speed); in hub_port_connect()
5510 dev_dbg(hub->intfdev, "%dmA power budget left\n", status); in hub_port_connect()
5521 mutex_unlock(hcd->address0_mutex); in hub_port_connect()
5525 if ((status == -ENOTCONN) || (status == -ENOTSUPP)) in hub_port_connect()
5528 /* When halfway through our retry count, power-cycle the port */ in hub_port_connect()
5529 if (i == (PORT_INIT_TRIES - 1) / 2) { in hub_port_connect()
5530 dev_info(&port_dev->dev, "attempt power cycle\n"); in hub_port_connect()
5537 if (hub->hdev->parent || in hub_port_connect()
5538 !hcd->driver->port_handed_over || in hub_port_connect()
5539 !(hcd->driver->port_handed_over)(hcd, port1)) { in hub_port_connect()
5540 if (status != -ENOTCONN && status != -ENODEV) in hub_port_connect()
5541 dev_err(&port_dev->dev, in hub_port_connect()
5547 if (hcd->driver->relinquish_port && !hub->hdev->parent) { in hub_port_connect()
5548 if (status != -ENOTCONN && status != -ENODEV) in hub_port_connect()
5549 hcd->driver->relinquish_port(hcd, port1); in hub_port_connect()
5555 * a port connection-change occurs;
5556 * a port enable-change occurs (often caused by EMI);
5563 __must_hold(&port_dev->status_lock) in hub_port_connect_change()
5565 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_connect_change()
5566 struct usb_device *udev = port_dev->child; in hub_port_connect_change()
5568 int status = -ENODEV; in hub_port_connect_change()
5570 dev_dbg(&port_dev->dev, "status %04x, change %04x, %s\n", portstatus, in hub_port_connect_change()
5573 if (hub->has_indicators) { in hub_port_connect_change()
5575 hub->indicator[port1-1] = INDICATOR_AUTO; in hub_port_connect_change()
5580 if (hub->hdev->bus->is_b_host) in hub_port_connect_change()
5587 udev->state != USB_STATE_NOTATTACHED) { in hub_port_connect_change()
5590 * USB-3 connections are initialized automatically by in hub_port_connect_change()
5597 dev_dbg(&udev->dev, in hub_port_connect_change()
5602 udev->bos)) { in hub_port_connect_change()
5603 dev_dbg(&udev->dev, in hub_port_connect_change()
5611 } else if (udev->state == USB_STATE_SUSPENDED && in hub_port_connect_change()
5612 udev->persist_enabled) { in hub_port_connect_change()
5624 clear_bit(port1, hub->change_bits); in hub_port_connect_change()
5635 /* Handle notifying userspace about hub over-current events */
5642 sysfs_notify(&port_dev->dev.kobj, NULL, "over_current_count"); in port_over_current_notify()
5644 hub_dev = port_dev->dev.parent; in port_over_current_notify()
5649 port_dev_path = kobject_get_path(&port_dev->dev.kobj, GFP_KERNEL); in port_over_current_notify()
5658 port_dev->over_current_count); in port_over_current_notify()
5662 kobject_uevent_env(&hub_dev->kobj, KOBJ_CHANGE, envp); in port_over_current_notify()
5671 __must_hold(&port_dev->status_lock) in port_event()
5674 struct usb_port *port_dev = hub->ports[port1 - 1]; in port_event()
5675 struct usb_device *udev = port_dev->child; in port_event()
5676 struct usb_device *hdev = hub->hdev; in port_event()
5680 connect_change = test_bit(port1, hub->change_bits); in port_event()
5681 clear_bit(port1, hub->event_bits); in port_event()
5682 clear_bit(port1, hub->wakeup_bits); in port_event()
5694 dev_dbg(&port_dev->dev, "enable change, status %08x\n", in port_event()
5705 dev_err(&port_dev->dev, "disabled by hub (EMI?), re-enabling...\n"); in port_event()
5712 port_dev->over_current_count++; in port_event()
5715 dev_dbg(&port_dev->dev, "over-current change #%u\n", in port_event()
5716 port_dev->over_current_count); in port_event()
5723 dev_err(&port_dev->dev, "over-current condition\n"); in port_event()
5727 dev_dbg(&port_dev->dev, "reset change\n"); in port_event()
5732 dev_dbg(&port_dev->dev, "warm reset change\n"); in port_event()
5737 dev_dbg(&port_dev->dev, "link state change\n"); in port_event()
5742 dev_warn(&port_dev->dev, "config error\n"); in port_event()
5748 if (!pm_runtime_active(&port_dev->dev)) in port_event()
5752 if (port_dev->ignore_event && port_dev->early_stop) in port_event()
5770 dev_dbg(&port_dev->dev, "Wait for inactive link disconnect detect\n"); in port_event()
5773 || udev->state == USB_STATE_NOTATTACHED) { in port_event()
5774 dev_dbg(&port_dev->dev, "do warm reset, port only\n"); in port_event()
5779 dev_dbg(&port_dev->dev, "do warm reset, full device\n"); in port_event()
5805 hdev = hub->hdev; in hub_event()
5806 hub_dev = hub->intfdev; in hub_event()
5809 kcov_remote_start_usb((u64)hdev->bus->busnum); in hub_event()
5812 hdev->state, hdev->maxchild, in hub_event()
5814 (u16) hub->change_bits[0], in hub_event()
5815 (u16) hub->event_bits[0]); in hub_event()
5820 if (unlikely(hub->disconnected)) in hub_event()
5824 if (hdev->state == USB_STATE_NOTATTACHED) { in hub_event()
5825 hub->error = -ENODEV; in hub_event()
5838 if (hub->quiescing) in hub_event()
5841 if (hub->error) { in hub_event()
5842 dev_dbg(hub_dev, "resetting for error %d\n", hub->error); in hub_event()
5850 hub->nerrors = 0; in hub_event()
5851 hub->error = 0; in hub_event()
5855 for (i = 1; i <= hdev->maxchild; i++) { in hub_event()
5856 struct usb_port *port_dev = hub->ports[i - 1]; in hub_event()
5858 if (test_bit(i, hub->event_bits) in hub_event()
5859 || test_bit(i, hub->change_bits) in hub_event()
5860 || test_bit(i, hub->wakeup_bits)) { in hub_event()
5867 * (powered-off), we leave it in that state, run in hub_event()
5870 pm_runtime_get_noresume(&port_dev->dev); in hub_event()
5871 pm_runtime_barrier(&port_dev->dev); in hub_event()
5875 pm_runtime_put_sync(&port_dev->dev); in hub_event()
5880 if (test_and_clear_bit(0, hub->event_bits) == 0) in hub_event()
5890 hub->limited_power = 1; in hub_event()
5892 hub->limited_power = 0; in hub_event()
5898 dev_dbg(hub_dev, "over-current change\n"); in hub_event()
5904 dev_err(hub_dev, "over-current condition\n"); in hub_event()
5914 /* Balance the stuff in kick_hub_wq() and allow autosuspend */ in hub_event()
5992 return -1; in usb_hub_init()
5997 * USB-PERSIST port handover. Otherwise it might see that a full-speed in usb_hub_init()
5999 * over to the companion full-speed controller. in usb_hub_init()
6009 return -1; in usb_hub_init()
6021 * individual hub resources. -greg in usb_hub_cleanup()
6027 * usb_reset_and_verify_device - perform a USB port reset to reinitialize a device
6030 * WARNING - don't use this routine to reset a composite device
6039 * re-connected. All drivers will be unbound, and the device will be
6040 * re-enumerated and probed all over again.
6042 * Return: 0 if the reset succeeded, -ENODEV if the device has been
6062 struct usb_device *parent_hdev = udev->parent; in usb_reset_and_verify_device()
6064 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_reset_and_verify_device()
6068 int port1 = udev->portnum; in usb_reset_and_verify_device()
6070 if (udev->state == USB_STATE_NOTATTACHED || in usb_reset_and_verify_device()
6071 udev->state == USB_STATE_SUSPENDED) { in usb_reset_and_verify_device()
6072 dev_dbg(&udev->dev, "device reset not allowed in state %d\n", in usb_reset_and_verify_device()
6073 udev->state); in usb_reset_and_verify_device()
6074 return -EINVAL; in usb_reset_and_verify_device()
6078 return -EISDIR; in usb_reset_and_verify_device()
6083 * It will be re-enabled by the enumeration process. in usb_reset_and_verify_device()
6087 bos = udev->bos; in usb_reset_and_verify_device()
6088 udev->bos = NULL; in usb_reset_and_verify_device()
6090 mutex_lock(hcd->address0_mutex); in usb_reset_and_verify_device()
6094 ret = -ENODEV; in usb_reset_and_verify_device()
6099 * Other endpoints will be handled by re-enumeration. */ in usb_reset_and_verify_device()
6102 if (ret >= 0 || ret == -ENOTCONN || ret == -ENODEV) in usb_reset_and_verify_device()
6105 mutex_unlock(hcd->address0_mutex); in usb_reset_and_verify_device()
6112 dev_info(&udev->dev, "device firmware changed\n"); in usb_reset_and_verify_device()
6117 if (!udev->actconfig) in usb_reset_and_verify_device()
6120 mutex_lock(hcd->bandwidth_mutex); in usb_reset_and_verify_device()
6121 ret = usb_hcd_alloc_bandwidth(udev, udev->actconfig, NULL, NULL); in usb_reset_and_verify_device()
6123 dev_warn(&udev->dev, in usb_reset_and_verify_device()
6126 mutex_unlock(hcd->bandwidth_mutex); in usb_reset_and_verify_device()
6131 udev->actconfig->desc.bConfigurationValue, 0, in usb_reset_and_verify_device()
6134 dev_err(&udev->dev, in usb_reset_and_verify_device()
6136 udev->actconfig->desc.bConfigurationValue, ret); in usb_reset_and_verify_device()
6137 mutex_unlock(hcd->bandwidth_mutex); in usb_reset_and_verify_device()
6140 mutex_unlock(hcd->bandwidth_mutex); in usb_reset_and_verify_device()
6144 * Don't bother to send the Set-Interface request for interfaces in usb_reset_and_verify_device()
6146 * many devices can't handle it. Instead just reset the host-side in usb_reset_and_verify_device()
6149 for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) { in usb_reset_and_verify_device()
6150 struct usb_host_config *config = udev->actconfig; in usb_reset_and_verify_device()
6151 struct usb_interface *intf = config->interface[i]; in usb_reset_and_verify_device()
6154 desc = &intf->cur_altsetting->desc; in usb_reset_and_verify_device()
6155 if (desc->bAlternateSetting == 0) { in usb_reset_and_verify_device()
6164 intf->resetting_device = 1; in usb_reset_and_verify_device()
6165 ret = usb_set_interface(udev, desc->bInterfaceNumber, in usb_reset_and_verify_device()
6166 desc->bAlternateSetting); in usb_reset_and_verify_device()
6167 intf->resetting_device = 0; in usb_reset_and_verify_device()
6170 dev_err(&udev->dev, "failed to restore interface %d " in usb_reset_and_verify_device()
6172 desc->bInterfaceNumber, in usb_reset_and_verify_device()
6173 desc->bAlternateSetting, in usb_reset_and_verify_device()
6178 for (j = 0; j < intf->cur_altsetting->desc.bNumEndpoints; j++) in usb_reset_and_verify_device()
6179 intf->cur_altsetting->endpoint[j].streams = 0; in usb_reset_and_verify_device()
6183 /* Now that the alt settings are re-installed, enable LTM and LPM. */ in usb_reset_and_verify_device()
6188 udev->bos = bos; in usb_reset_and_verify_device()
6193 udev->bos = bos; in usb_reset_and_verify_device()
6195 return -ENODEV; in usb_reset_and_verify_device()
6199 * usb_reset_device - warn interface drivers and perform a USB port reset
6209 * being unbound or re-bound during the ongoing reset its disconnect()
6211 * routine returns -EINPROGRESS.
6230 struct usb_host_config *config = udev->actconfig; in usb_reset_device()
6231 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_reset_device()
6233 if (udev->state == USB_STATE_NOTATTACHED) { in usb_reset_device()
6234 dev_dbg(&udev->dev, "device reset not allowed in state %d\n", in usb_reset_device()
6235 udev->state); in usb_reset_device()
6236 return -EINVAL; in usb_reset_device()
6239 if (!udev->parent) { in usb_reset_device()
6240 /* this requires hcd-specific logic; see ohci_restart() */ in usb_reset_device()
6241 dev_dbg(&udev->dev, "%s for root hub!\n", __func__); in usb_reset_device()
6242 return -EISDIR; in usb_reset_device()
6245 if (udev->reset_in_progress) in usb_reset_device()
6246 return -EINPROGRESS; in usb_reset_device()
6247 udev->reset_in_progress = 1; in usb_reset_device()
6249 port_dev = hub->ports[udev->portnum - 1]; in usb_reset_device()
6262 /* Prevent autosuspend during the reset */ in usb_reset_device()
6266 for (i = 0; i < config->desc.bNumInterfaces; ++i) { in usb_reset_device()
6267 struct usb_interface *cintf = config->interface[i]; in usb_reset_device()
6271 if (cintf->dev.driver) { in usb_reset_device()
6272 drv = to_usb_driver(cintf->dev.driver); in usb_reset_device()
6273 if (drv->pre_reset && drv->post_reset) in usb_reset_device()
6274 unbind = (drv->pre_reset)(cintf); in usb_reset_device()
6275 else if (cintf->condition == in usb_reset_device()
6289 for (i = config->desc.bNumInterfaces - 1; i >= 0; --i) { in usb_reset_device()
6290 struct usb_interface *cintf = config->interface[i]; in usb_reset_device()
6292 int rebind = cintf->needs_binding; in usb_reset_device()
6294 if (!rebind && cintf->dev.driver) { in usb_reset_device()
6295 drv = to_usb_driver(cintf->dev.driver); in usb_reset_device()
6296 if (drv->post_reset) in usb_reset_device()
6297 rebind = (drv->post_reset)(cintf); in usb_reset_device()
6298 else if (cintf->condition == in usb_reset_device()
6302 cintf->needs_binding = 1; in usb_reset_device()
6313 udev->reset_in_progress = 0; in usb_reset_device()
6320 * usb_queue_reset_device - Reset a USB device from an atomic context
6333 * - Scheduling two resets at the same time from two different drivers
6336 * handles ->pre_reset(), the second reset might happen or not.
6338 * - If the reset is delayed so long that the interface is unbound from
6341 * - This function can be called during .probe(). It can also be called
6344 * .disconnect(), call usb_reset_device() directly -- but watch out
6349 if (schedule_work(&iface->reset_ws)) in usb_queue_reset_device()
6355 * usb_hub_find_child - Get the pointer of child device
6365 * child's usb_device pointer if non-NULL.
6372 if (port1 < 1 || port1 > hdev->maxchild) in usb_hub_find_child()
6374 return hub->ports[port1 - 1]->child; in usb_hub_find_child()
6389 for (i = 1; i <= hdev->maxchild; i++) { in usb_hub_adjust_deviceremovable()
6390 struct usb_port *port_dev = hub->ports[i - 1]; in usb_hub_adjust_deviceremovable()
6392 connect_type = port_dev->connect_type; in usb_hub_adjust_deviceremovable()
6396 if (!(desc->u.hs.DeviceRemovable[i/8] & mask)) { in usb_hub_adjust_deviceremovable()
6397 … dev_dbg(&port_dev->dev, "DeviceRemovable is changed to 1 according to platform information.\n"); in usb_hub_adjust_deviceremovable()
6398 desc->u.hs.DeviceRemovable[i/8] |= mask; in usb_hub_adjust_deviceremovable()
6403 u16 port_removable = le16_to_cpu(desc->u.ss.DeviceRemovable); in usb_hub_adjust_deviceremovable()
6405 for (i = 1; i <= hdev->maxchild; i++) { in usb_hub_adjust_deviceremovable()
6406 struct usb_port *port_dev = hub->ports[i - 1]; in usb_hub_adjust_deviceremovable()
6408 connect_type = port_dev->connect_type; in usb_hub_adjust_deviceremovable()
6413 … dev_dbg(&port_dev->dev, "DeviceRemovable is changed to 1 according to platform information.\n"); in usb_hub_adjust_deviceremovable()
6419 desc->u.ss.DeviceRemovable = cpu_to_le16(port_removable); in usb_hub_adjust_deviceremovable()
6425 * usb_get_hub_port_acpi_handle - Get the usb port's acpi handle
6440 return ACPI_HANDLE(&hub->ports[port1 - 1]->dev); in usb_get_hub_port_acpi_handle()