Lines Matching +full:single +full:- +full:transaction +full:- +full:translator
1 // SPDX-License-Identifier: GPL-2.0
70 /* Protect struct usb_device->state and ->children members
71 * Note: Both are also protected by ->dev.sem, except that ->state can
79 /* synchronize hub-port add/remove and peering operations */
89 * 10 seconds to send reply for the initial 64-byte descriptor request.
91 /* define initial 64-byte descriptor request timeout in milliseconds */
95 "initial 64-byte descriptor request timeout in milliseconds "
96 "(default 5000 - 5.0 seconds)");
140 if (hub_is_superspeedplus(hub->hdev)) in portspeed()
142 if (hub_is_superspeed(hub->hdev)) in portspeed()
155 if (!hdev || !hdev->actconfig || !hdev->maxchild) in usb_hub_to_struct_hub()
157 return usb_get_intfdata(hdev->actconfig->interface[0]); in usb_hub_to_struct_hub()
163 if (udev->quirks & USB_QUIRK_NO_LPM) in usb_device_supports_lpm()
167 if (!udev->bos) in usb_device_supports_lpm()
173 if (udev->speed == USB_SPEED_HIGH || udev->speed == USB_SPEED_FULL) { in usb_device_supports_lpm()
174 if (udev->bos->ext_cap && in usb_device_supports_lpm()
176 le32_to_cpu(udev->bos->ext_cap->bmAttributes))) in usb_device_supports_lpm()
186 if (!udev->bos->ss_cap) { in usb_device_supports_lpm()
187 dev_info(&udev->dev, "No LPM exit latency info found, disabling LPM.\n"); in usb_device_supports_lpm()
191 if (udev->bos->ss_cap->bU1devExitLat == 0 && in usb_device_supports_lpm()
192 udev->bos->ss_cap->bU2DevExitLat == 0) { in usb_device_supports_lpm()
193 if (udev->parent) in usb_device_supports_lpm()
194 dev_info(&udev->dev, "LPM exit latency is zeroed, disabling LPM.\n"); in usb_device_supports_lpm()
196 dev_info(&udev->dev, "We don't know the algorithms for LPM for this host, disabling LPM.\n"); in usb_device_supports_lpm()
200 if (!udev->parent || udev->parent->lpm_capable) in usb_device_supports_lpm()
226 total_mel = hub_lpm_params->mel + in usb_set_lpm_mel()
228 hub->descriptor->u.ss.bHubHdrDecLat * 100; in usb_set_lpm_mel()
236 total_mel += (__le16_to_cpu(hub->descriptor->u.ss.wHubDelay) + in usb_set_lpm_mel()
247 if (!hub->hdev->parent) in usb_set_lpm_mel()
250 udev_lpm_params->mel = total_mel; in usb_set_lpm_mel()
284 hub_pel = port_to_port_exit_latency * 1000 + hub_lpm_params->pel; in usb_set_lpm_pel()
287 * According to figure C-7 in the USB 3.0 spec, the PEL for this device in usb_set_lpm_pel()
291 udev_lpm_params->pel = first_link_pel; in usb_set_lpm_pel()
293 udev_lpm_params->pel = hub_pel; in usb_set_lpm_pel()
297 * Set the System Exit Latency (SEL) to indicate the total worst-case time from
302 * - t1: device PEL
303 * - t2: time for the ERDY to make it from the device to the host.
304 * - t3: a host-specific delay to process the ERDY.
305 * - t4: time for the packet to make it from the host to the device.
319 total_sel = udev_lpm_params->pel; in usb_set_lpm_sel()
321 for (parent = udev->parent, num_hubs = 0; parent->parent; in usb_set_lpm_sel()
322 parent = parent->parent) in usb_set_lpm_sel()
324 /* t2 = 2.1us + 250ns * (num_hubs - 1) */ in usb_set_lpm_sel()
326 total_sel += 2100 + 250 * (num_hubs - 1); in usb_set_lpm_sel()
331 udev_lpm_params->sel = total_sel; in usb_set_lpm_sel()
343 if (!udev->lpm_capable || udev->speed < USB_SPEED_SUPER) in usb_set_lpm_parameters()
347 if (!udev->bos) in usb_set_lpm_parameters()
350 hub = usb_hub_to_struct_hub(udev->parent); in usb_set_lpm_parameters()
357 udev_u1_del = udev->bos->ss_cap->bU1devExitLat; in usb_set_lpm_parameters()
358 udev_u2_del = le16_to_cpu(udev->bos->ss_cap->bU2DevExitLat); in usb_set_lpm_parameters()
359 hub_u1_del = udev->parent->bos->ss_cap->bU1devExitLat; in usb_set_lpm_parameters()
360 hub_u2_del = le16_to_cpu(udev->parent->bos->ss_cap->bU2DevExitLat); in usb_set_lpm_parameters()
362 usb_set_lpm_mel(udev, &udev->u1_params, udev_u1_del, in usb_set_lpm_parameters()
363 hub, &udev->parent->u1_params, hub_u1_del); in usb_set_lpm_parameters()
365 usb_set_lpm_mel(udev, &udev->u2_params, udev_u2_del, in usb_set_lpm_parameters()
366 hub, &udev->parent->u2_params, hub_u2_del); in usb_set_lpm_parameters()
378 * U2, it's tHubPort2PortExitLat + U2DevExitLat - U1DevExitLat. I in usb_set_lpm_parameters()
387 usb_set_lpm_pel(udev, &udev->u1_params, udev_u1_del, in usb_set_lpm_parameters()
388 hub, &udev->parent->u1_params, hub_u1_del, in usb_set_lpm_parameters()
392 port_to_port_delay = 1 + hub_u2_del - hub_u1_del; in usb_set_lpm_parameters()
396 usb_set_lpm_pel(udev, &udev->u2_params, udev_u2_del, in usb_set_lpm_parameters()
397 hub, &udev->parent->u2_params, hub_u2_del, in usb_set_lpm_parameters()
401 usb_set_lpm_sel(udev, &udev->u1_params); in usb_set_lpm_parameters()
402 usb_set_lpm_sel(udev, &udev->u2_params); in usb_set_lpm_parameters()
430 size = USB_DT_HUB_NONVAR_SIZE + desc->bNbrPorts / 8 + 1; in get_hub_descriptor()
432 return -EMSGSIZE; in get_hub_descriptor()
436 return -EINVAL; in get_hub_descriptor()
485 * USB 2.0 spec Section 11.24.2.7.1.10 and table 11-7
490 struct usb_port *port_dev = hub->ports[port1 - 1]; in set_port_led()
493 status = set_port_feature(hub->hdev, (selector << 8) | port1, in set_port_led()
495 dev_dbg(&port_dev->dev, "indicator %s status %d\n", in set_port_led()
505 struct usb_device *hdev = hub->hdev; in led_work()
508 int cursor = -1; in led_work()
510 if (hdev->state != USB_STATE_CONFIGURED || hub->quiescing) in led_work()
513 for (i = 0; i < hdev->maxchild; i++) { in led_work()
516 /* 30%-50% duty cycle */ in led_work()
518 switch (hub->indicator[i]) { in led_work()
558 hub->indicator[i] = mode; in led_work()
562 cursor %= hdev->maxchild; in led_work()
564 hub->indicator[cursor] = INDICATOR_CYCLE; in led_work()
569 &hub->leds, LED_CYCLE_PERIOD); in led_work()
582 int i, status = -ETIMEDOUT; in get_hub_status()
585 (status == -ETIMEDOUT || status == -EPIPE); i++) { in get_hub_status()
600 int i, status = -ETIMEDOUT; in get_port_status()
603 (status == -ETIMEDOUT || status == -EPIPE); i++) { in get_port_status()
620 mutex_lock(&hub->status_mutex); in hub_ext_port_status()
621 ret = get_port_status(hub->hdev, port1, &hub->status->port, type, len); in hub_ext_port_status()
623 if (ret != -ENODEV) in hub_ext_port_status()
624 dev_err(hub->intfdev, in hub_ext_port_status()
627 ret = -EIO; in hub_ext_port_status()
629 *status = le16_to_cpu(hub->status->port.wPortStatus); in hub_ext_port_status()
630 *change = le16_to_cpu(hub->status->port.wPortChange); in hub_ext_port_status()
633 hub->status->port.dwExtPortStatus); in hub_ext_port_status()
636 mutex_unlock(&hub->status_mutex); in hub_ext_port_status()
640 * protects hub->status, and the phy driver only checks the port in hub_ext_port_status()
644 struct usb_device *hdev = hub->hdev; in hub_ext_port_status()
652 struct usb_hcd *hcd = bus_to_hcd(hdev->bus); in hub_ext_port_status()
659 usb_phy_roothub_notify_connect(hcd->phy_roothub, port1 - 1); in hub_ext_port_status()
661 usb_phy_roothub_notify_disconnect(hcd->phy_roothub, port1 - 1); in hub_ext_port_status()
680 spin_lock_irqsave(&hub->irq_urb_lock, flags); in hub_resubmit_irq_urb()
682 if (hub->quiescing) { in hub_resubmit_irq_urb()
683 spin_unlock_irqrestore(&hub->irq_urb_lock, flags); in hub_resubmit_irq_urb()
687 status = usb_submit_urb(hub->urb, GFP_ATOMIC); in hub_resubmit_irq_urb()
688 if (status && status != -ENODEV && status != -EPERM && in hub_resubmit_irq_urb()
689 status != -ESHUTDOWN) { in hub_resubmit_irq_urb()
690 dev_err(hub->intfdev, "resubmit --> %d\n", status); in hub_resubmit_irq_urb()
691 mod_timer(&hub->irq_urb_retry, jiffies + HZ); in hub_resubmit_irq_urb()
694 spin_unlock_irqrestore(&hub->irq_urb_lock, flags); in hub_resubmit_irq_urb()
709 if (hub->disconnected || work_pending(&hub->events)) in kick_hub_wq()
720 intf = to_usb_interface(hub->intfdev); in kick_hub_wq()
724 if (queue_work(hub_wq, &hub->events)) in kick_hub_wq()
759 port_dev = hub->ports[portnum - 1]; in usb_wakeup_notification()
760 if (port_dev && port_dev->child) in usb_wakeup_notification()
761 pm_wakeup_event(&port_dev->child->dev, 0); in usb_wakeup_notification()
763 set_bit(portnum, hub->wakeup_bits); in usb_wakeup_notification()
772 struct usb_hub *hub = urb->context; in hub_irq()
773 int status = urb->status; in hub_irq()
778 case -ENOENT: /* synchronous unlink */ in hub_irq()
779 case -ECONNRESET: /* async unlink */ in hub_irq()
780 case -ESHUTDOWN: /* hardware going away */ in hub_irq()
785 dev_dbg(hub->intfdev, "transfer --> %d\n", status); in hub_irq()
786 if ((++hub->nerrors < 10) || hub->error) in hub_irq()
788 hub->error = status; in hub_irq()
794 for (i = 0; i < urb->actual_length; ++i) in hub_irq()
795 bits |= ((unsigned long) ((*hub->buffer)[i])) in hub_irq()
797 hub->event_bits[0] = bits; in hub_irq()
801 hub->nerrors = 0; in hub_irq()
840 spin_lock_irqsave(&hub->tt.lock, flags); in hub_tt_work()
841 while (!list_empty(&hub->tt.clear_list)) { in hub_tt_work()
844 struct usb_device *hdev = hub->hdev; in hub_tt_work()
848 next = hub->tt.clear_list.next; in hub_tt_work()
850 list_del(&clear->clear_list); in hub_tt_work()
853 spin_unlock_irqrestore(&hub->tt.lock, flags); in hub_tt_work()
854 status = hub_clear_tt_buffer(hdev, clear->devinfo, clear->tt); in hub_tt_work()
855 if (status && status != -ENODEV) in hub_tt_work()
856 dev_err(&hdev->dev, in hub_tt_work()
858 clear->tt, clear->devinfo, status); in hub_tt_work()
861 drv = clear->hcd->driver; in hub_tt_work()
862 if (drv->clear_tt_buffer_complete) in hub_tt_work()
863 (drv->clear_tt_buffer_complete)(clear->hcd, clear->ep); in hub_tt_work()
866 spin_lock_irqsave(&hub->tt.lock, flags); in hub_tt_work()
868 spin_unlock_irqrestore(&hub->tt.lock, flags); in hub_tt_work()
872 * usb_hub_set_port_power - control hub port's power state
897 set_bit(port1, hub->power_bits); in usb_hub_set_port_power()
899 clear_bit(port1, hub->power_bits); in usb_hub_set_port_power()
904 * usb_hub_clear_tt_buffer - clear control/bulk TT state in high speed hub
905 * @urb: an URB associated with the failed or incomplete split transaction
908 * bulk transaction failed in a way that requires clearing internal state of
909 * a transaction translator. This is normally detected (and reported) from
919 struct usb_device *udev = urb->dev; in usb_hub_clear_tt_buffer()
920 int pipe = urb->pipe; in usb_hub_clear_tt_buffer()
921 struct usb_tt *tt = udev->tt; in usb_hub_clear_tt_buffer()
931 dev_err(&udev->dev, "can't save CLEAR_TT_BUFFER state\n"); in usb_hub_clear_tt_buffer()
933 return -ENOMEM; in usb_hub_clear_tt_buffer()
937 clear->tt = tt->multi ? udev->ttport : 1; in usb_hub_clear_tt_buffer()
938 clear->devinfo = usb_pipeendpoint (pipe); in usb_hub_clear_tt_buffer()
939 clear->devinfo |= ((u16)udev->devaddr) << 4; in usb_hub_clear_tt_buffer()
940 clear->devinfo |= usb_pipecontrol(pipe) in usb_hub_clear_tt_buffer()
944 clear->devinfo |= 1 << 15; in usb_hub_clear_tt_buffer()
947 clear->hcd = bus_to_hcd(udev->bus); in usb_hub_clear_tt_buffer()
948 clear->ep = urb->ep; in usb_hub_clear_tt_buffer()
951 spin_lock_irqsave(&tt->lock, flags); in usb_hub_clear_tt_buffer()
952 list_add_tail(&clear->clear_list, &tt->clear_list); in usb_hub_clear_tt_buffer()
953 schedule_work(&tt->clear_work); in usb_hub_clear_tt_buffer()
954 spin_unlock_irqrestore(&tt->lock, flags); in usb_hub_clear_tt_buffer()
965 * USB 2.0 hubs. Some hubs do not implement port-power switching in hub_power_on()
970 dev_dbg(hub->intfdev, "enabling power on all ports\n"); in hub_power_on()
972 dev_dbg(hub->intfdev, "trying to enable port power on " in hub_power_on()
973 "non-switchable hub\n"); in hub_power_on()
974 for (port1 = 1; port1 <= hub->hdev->maxchild; port1++) in hub_power_on()
975 if (test_bit(port1, hub->power_bits)) in hub_power_on()
976 set_port_feature(hub->hdev, port1, USB_PORT_FEAT_POWER); in hub_power_on()
978 usb_clear_port_feature(hub->hdev, port1, in hub_power_on()
989 mutex_lock(&hub->status_mutex); in hub_hub_status()
990 ret = get_hub_status(hub->hdev, &hub->status->hub); in hub_hub_status()
992 if (ret != -ENODEV) in hub_hub_status()
993 dev_err(hub->intfdev, in hub_hub_status()
996 *status = le16_to_cpu(hub->status->hub.wHubStatus); in hub_hub_status()
997 *change = le16_to_cpu(hub->status->hub.wHubChange); in hub_hub_status()
1000 mutex_unlock(&hub->status_mutex); in hub_hub_status()
1007 return set_port_feature(hub->hdev, in hub_set_port_link_state()
1013 * Disable a port and mark a logical connect-change event, so that some
1015 * and will re-enumerate if there actually is a device attached.
1019 dev_dbg(&hub->ports[port1 - 1]->dev, "logical disconnect\n"); in hub_port_logical_disconnect()
1023 * - some devices won't enumerate without a VBUS power cycle in hub_port_logical_disconnect()
1024 * - SRP saves power that way in hub_port_logical_disconnect()
1025 * - ... new call, TBD ... in hub_port_logical_disconnect()
1026 * That's easy if this hub can switch power per-port, and in hub_port_logical_disconnect()
1031 set_bit(port1, hub->change_bits); in hub_port_logical_disconnect()
1036 * usb_remove_device - disable a device's port on its parent hub
1053 if (!udev->parent) /* Can't remove a root hub */ in usb_remove_device()
1054 return -EINVAL; in usb_remove_device()
1055 hub = usb_hub_to_struct_hub(udev->parent); in usb_remove_device()
1056 intf = to_usb_interface(hub->intfdev); in usb_remove_device()
1062 set_bit(udev->portnum, hub->removed_bits); in usb_remove_device()
1063 hub_port_logical_disconnect(hub, udev->portnum); in usb_remove_device()
1078 struct usb_device *hdev = hub->hdev; in hub_activate()
1088 device_lock(&hdev->dev); in hub_activate()
1091 if (hub->disconnected) in hub_activate()
1110 if (hdev->parent && hub_is_superspeed(hdev)) { in hub_activate()
1113 hdev->level - 1, 0, NULL, 0, in hub_activate()
1116 dev_err(hub->intfdev, in hub_activate()
1121 * hub's initial power-up delays. This is pretty awkward in hub_activate()
1122 * and the implementation looks like a home-brewed sort of in hub_activate()
1136 INIT_DELAYED_WORK(&hub->init_work, hub_init_func2); in hub_activate()
1138 &hub->init_work, in hub_activate()
1143 to_usb_interface(hub->intfdev)); in hub_activate()
1150 hcd = bus_to_hcd(hdev->bus); in hub_activate()
1151 if (hcd->driver->update_hub_device) { in hub_activate()
1152 ret = hcd->driver->update_hub_device(hcd, hdev, in hub_activate()
1153 &hub->tt, GFP_NOIO); in hub_activate()
1155 dev_err(hub->intfdev, in hub_activate()
1157 dev_err(hub->intfdev, in hub_activate()
1166 } else if (hub_is_superspeed(hub->hdev)) in hub_activate()
1172 * Check each port and set hub->change_bits to let hub_wq know in hub_activate()
1175 for (port1 = 1; port1 <= hdev->maxchild; ++port1) { in hub_activate()
1176 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_activate()
1177 struct usb_device *udev = port_dev->child; in hub_activate()
1186 dev_dbg(&port_dev->dev, "status %04x change %04x\n", in hub_activate()
1199 udev->state == USB_STATE_NOTATTACHED)) { in hub_activate()
1212 /* Make sure a warm-reset request is handled by port_event */ in hub_activate()
1215 set_bit(port1, hub->event_bits); in hub_activate()
1227 /* Clear status-change flags; we'll debounce later */ in hub_activate()
1230 usb_clear_port_feature(hub->hdev, port1, in hub_activate()
1235 usb_clear_port_feature(hub->hdev, port1, in hub_activate()
1240 usb_clear_port_feature(hub->hdev, port1, in hub_activate()
1244 hub_is_superspeed(hub->hdev)) { in hub_activate()
1246 usb_clear_port_feature(hub->hdev, port1, in hub_activate()
1254 clear_bit(port1, hub->removed_bits); in hub_activate()
1256 if (!udev || udev->state == USB_STATE_NOTATTACHED) { in hub_activate()
1267 set_bit(port1, hub->change_bits); in hub_activate()
1279 * bit on device-initiated resume. in hub_activate()
1281 if (portchange || (hub_is_superspeed(hub->hdev) && in hub_activate()
1283 set_bit(port1, hub->event_bits); in hub_activate()
1285 } else if (udev->persist_enabled) { in hub_activate()
1287 udev->reset_resume = 1; in hub_activate()
1292 if (test_bit(port1, hub->power_bits)) in hub_activate()
1293 set_bit(port1, hub->change_bits); in hub_activate()
1298 set_bit(port1, hub->change_bits); in hub_activate()
1302 /* If no port-status-change flags were set, we don't need any in hub_activate()
1307 * If any port-status changes do occur during this delay, hub_wq in hub_activate()
1315 INIT_DELAYED_WORK(&hub->init_work, hub_init_func3); in hub_activate()
1317 &hub->init_work, in hub_activate()
1319 device_unlock(&hdev->dev); in hub_activate()
1326 hub->quiescing = 0; in hub_activate()
1328 status = usb_submit_urb(hub->urb, GFP_NOIO); in hub_activate()
1330 dev_err(hub->intfdev, "activate --> %d\n", status); in hub_activate()
1331 if (hub->has_indicators && blinkenlights) in hub_activate()
1333 &hub->leds, LED_CYCLE_PERIOD); in hub_activate()
1341 usb_autopm_put_interface_async(to_usb_interface(hub->intfdev)); in hub_activate()
1342 device_unlock(&hdev->dev); in hub_activate()
1369 struct usb_device *hdev = hub->hdev; in hub_quiesce()
1373 /* hub_wq and related activity won't re-trigger */ in hub_quiesce()
1374 spin_lock_irqsave(&hub->irq_urb_lock, flags); in hub_quiesce()
1375 hub->quiescing = 1; in hub_quiesce()
1376 spin_unlock_irqrestore(&hub->irq_urb_lock, flags); in hub_quiesce()
1380 for (i = 0; i < hdev->maxchild; ++i) { in hub_quiesce()
1381 if (hub->ports[i]->child) in hub_quiesce()
1382 usb_disconnect(&hub->ports[i]->child); in hub_quiesce()
1387 del_timer_sync(&hub->irq_urb_retry); in hub_quiesce()
1388 usb_kill_urb(hub->urb); in hub_quiesce()
1389 if (hub->has_indicators) in hub_quiesce()
1390 cancel_delayed_work_sync(&hub->leds); in hub_quiesce()
1391 if (hub->tt.hub) in hub_quiesce()
1392 flush_work(&hub->tt.clear_work); in hub_quiesce()
1399 for (i = 0; i < hub->hdev->maxchild; ++i) in hub_pm_barrier_for_all_ports()
1400 pm_runtime_barrier(&hub->ports[i]->dev); in hub_pm_barrier_for_all_ports()
1409 hub->in_reset = 1; in hub_pre_reset()
1419 hub->in_reset = 0; in hub_post_reset()
1429 struct usb_device *hdev = hub->hdev; in hub_configure()
1430 struct device *hub_dev = hub->intfdev; in hub_configure()
1440 hub->buffer = kmalloc(sizeof(*hub->buffer), GFP_KERNEL); in hub_configure()
1441 if (!hub->buffer) { in hub_configure()
1442 ret = -ENOMEM; in hub_configure()
1446 hub->status = kmalloc(sizeof(*hub->status), GFP_KERNEL); in hub_configure()
1447 if (!hub->status) { in hub_configure()
1448 ret = -ENOMEM; in hub_configure()
1451 mutex_init(&hub->status_mutex); in hub_configure()
1453 hub->descriptor = kzalloc(sizeof(*hub->descriptor), GFP_KERNEL); in hub_configure()
1454 if (!hub->descriptor) { in hub_configure()
1455 ret = -ENOMEM; in hub_configure()
1460 * hub->descriptor can handle USB_MAXCHILDREN ports, in hub_configure()
1461 * but a (non-SS) hub can/will return fewer bytes here. in hub_configure()
1463 ret = get_hub_descriptor(hdev, hub->descriptor); in hub_configure()
1473 if (hub->descriptor->bNbrPorts > maxchild) { in hub_configure()
1475 ret = -ENODEV; in hub_configure()
1477 } else if (hub->descriptor->bNbrPorts == 0) { in hub_configure()
1479 ret = -ENODEV; in hub_configure()
1488 u32 delay = __le16_to_cpu(hub->descriptor->u.ss.wHubDelay); in hub_configure()
1490 if (hdev->parent) in hub_configure()
1491 delay += hdev->parent->hub_delay; in hub_configure()
1494 hdev->hub_delay = min_t(u32, delay, USB_TP_TRANSMISSION_DELAY_MAX); in hub_configure()
1497 maxchild = hub->descriptor->bNbrPorts; in hub_configure()
1501 hub->ports = kcalloc(maxchild, sizeof(struct usb_port *), GFP_KERNEL); in hub_configure()
1502 if (!hub->ports) { in hub_configure()
1503 ret = -ENOMEM; in hub_configure()
1507 wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); in hub_configure()
1522 portstr[i] = hub->descriptor->u.hs.DeviceRemovable in hub_configure()
1545 dev_dbg(hub_dev, "global over-current protection\n"); in hub_configure()
1548 dev_dbg(hub_dev, "individual port over-current protection\n"); in hub_configure()
1552 dev_dbg(hub_dev, "no over-current protection\n"); in hub_configure()
1556 spin_lock_init(&hub->tt.lock); in hub_configure()
1557 INIT_LIST_HEAD(&hub->tt.clear_list); in hub_configure()
1558 INIT_WORK(&hub->tt.clear_work, hub_tt_work); in hub_configure()
1559 switch (hdev->descriptor.bDeviceProtocol) { in hub_configure()
1563 dev_dbg(hub_dev, "Single TT\n"); in hub_configure()
1564 hub->tt.hub = hdev; in hub_configure()
1570 hub->tt.multi = 1; in hub_configure()
1572 dev_err(hub_dev, "Using single TT (err %d)\n", in hub_configure()
1574 hub->tt.hub = hdev; in hub_configure()
1581 hdev->descriptor.bDeviceProtocol); in hub_configure()
1588 if (hdev->descriptor.bDeviceProtocol != 0) { in hub_configure()
1589 hub->tt.think_time = 666; in hub_configure()
1592 8, hub->tt.think_time); in hub_configure()
1596 hub->tt.think_time = 666 * 2; in hub_configure()
1599 16, hub->tt.think_time); in hub_configure()
1602 hub->tt.think_time = 666 * 3; in hub_configure()
1605 24, hub->tt.think_time); in hub_configure()
1608 hub->tt.think_time = 666 * 4; in hub_configure()
1611 32, hub->tt.think_time); in hub_configure()
1615 /* probe() zeroes hub->indicator[] */ in hub_configure()
1617 hub->has_indicators = 1; in hub_configure()
1622 hub->descriptor->bPwrOn2PwrGood * 2); in hub_configure()
1624 /* power budgeting mostly matters with bus-powered hubs, in hub_configure()
1625 * and battery-powered root hubs (may provide just 8 mA). in hub_configure()
1632 hcd = bus_to_hcd(hdev->bus); in hub_configure()
1633 if (hdev == hdev->bus->root_hub) { in hub_configure()
1634 if (hcd->power_budget > 0) in hub_configure()
1635 hdev->bus_mA = hcd->power_budget; in hub_configure()
1637 hdev->bus_mA = full_load * maxchild; in hub_configure()
1638 if (hdev->bus_mA >= full_load) in hub_configure()
1639 hub->mA_per_port = full_load; in hub_configure()
1641 hub->mA_per_port = hdev->bus_mA; in hub_configure()
1642 hub->limited_power = 1; in hub_configure()
1645 int remaining = hdev->bus_mA - in hub_configure()
1646 hub->descriptor->bHubContrCurrent; in hub_configure()
1649 hub->descriptor->bHubContrCurrent); in hub_configure()
1650 hub->limited_power = 1; in hub_configure()
1656 hub->mA_per_port = unit_load; /* 7.2.1 */ in hub_configure()
1658 } else { /* Self-powered external hub */ in hub_configure()
1659 /* FIXME: What about battery-powered external hubs that in hub_configure()
1661 hub->mA_per_port = full_load; in hub_configure()
1663 if (hub->mA_per_port < full_load) in hub_configure()
1665 hub->mA_per_port); in hub_configure()
1674 if (hdev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_SELFPOWER) in hub_configure()
1680 dev_dbg(hub_dev, "%sover-current condition exists\n", in hub_configure()
1689 pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress); in hub_configure()
1692 if (maxp > sizeof(*hub->buffer)) in hub_configure()
1693 maxp = sizeof(*hub->buffer); in hub_configure()
1695 hub->urb = usb_alloc_urb(0, GFP_KERNEL); in hub_configure()
1696 if (!hub->urb) { in hub_configure()
1697 ret = -ENOMEM; in hub_configure()
1701 usb_fill_int_urb(hub->urb, hdev, pipe, *hub->buffer, maxp, hub_irq, in hub_configure()
1702 hub, endpoint->bInterval); in hub_configure()
1705 if (hub->has_indicators && blinkenlights) in hub_configure()
1706 hub->indicator[0] = INDICATOR_CYCLE; in hub_configure()
1712 dev_err(hub->intfdev, in hub_configure()
1717 hdev->maxchild = i; in hub_configure()
1718 for (i = 0; i < hdev->maxchild; i++) { in hub_configure()
1719 struct usb_port *port_dev = hub->ports[i]; in hub_configure()
1721 pm_runtime_put(&port_dev->dev); in hub_configure()
1731 if (hcd->driver->update_hub_device) { in hub_configure()
1732 ret = hcd->driver->update_hub_device(hcd, hdev, in hub_configure()
1733 &hub->tt, GFP_KERNEL); in hub_configure()
1740 usb_hub_adjust_deviceremovable(hdev, hub->descriptor); in hub_configure()
1756 usb_put_dev(hub->hdev); in hub_release()
1757 usb_put_intf(to_usb_interface(hub->intfdev)); in hub_release()
1763 kref_get(&hub->kref); in hub_get()
1768 kref_put(&hub->kref, hub_release); in hub_put()
1783 hub->disconnected = 1; in hub_disconnect()
1786 hub->error = 0; in hub_disconnect()
1793 port1 = hdev->maxchild; in hub_disconnect()
1794 hdev->maxchild = 0; in hub_disconnect()
1798 for (; port1 > 0; --port1) in hub_disconnect()
1803 if (hub->hdev->speed == USB_SPEED_HIGH) in hub_disconnect()
1804 highspeed_hubs--; in hub_disconnect()
1806 usb_free_urb(hub->urb); in hub_disconnect()
1807 kfree(hub->ports); in hub_disconnect()
1808 kfree(hub->descriptor); in hub_disconnect()
1809 kfree(hub->status); in hub_disconnect()
1810 kfree(hub->buffer); in hub_disconnect()
1812 pm_suspend_ignore_children(&intf->dev, false); in hub_disconnect()
1814 if (hub->quirk_disable_autosuspend) in hub_disconnect()
1817 onboard_dev_destroy_pdevs(&hub->onboard_devs); in hub_disconnect()
1826 if (desc->desc.bInterfaceSubClass != 0 && in hub_descriptor_is_sane()
1827 desc->desc.bInterfaceSubClass != 1) in hub_descriptor_is_sane()
1830 /* Multiple endpoints? What kind of mutant ninja-hub is this? */ in hub_descriptor_is_sane()
1831 if (desc->desc.bNumEndpoints != 1) in hub_descriptor_is_sane()
1835 if (!usb_endpoint_is_int_in(&desc->endpoint[0].desc)) in hub_descriptor_is_sane()
1847 desc = intf->cur_altsetting; in hub_probe()
1854 * - Unlike other drivers, the hub driver does not rely on the in hub_probe()
1859 * - The patch might cause one or more auto supend/resume for in hub_probe()
1875 * - The patch may cause one or more auto suspend/resume on in hub_probe()
1879 * - Change autosuspend delay of hub can avoid unnecessary auto in hub_probe()
1883 * - If user has indicated to prevent autosuspend by passing in hub_probe()
1884 * usbcore.autosuspend = -1 then keep autosuspend disabled. in hub_probe()
1887 if (hdev->dev.power.autosuspend_delay >= 0) in hub_probe()
1888 pm_runtime_set_autosuspend_delay(&hdev->dev, 0); in hub_probe()
1896 if (hdev->parent) { /* normal device */ in hub_probe()
1899 const struct hc_driver *drv = bus_to_hcd(hdev->bus)->driver; in hub_probe()
1901 if (drv->bus_suspend && drv->bus_resume) in hub_probe()
1905 if (hdev->level == MAX_TOPO_LEVEL) { in hub_probe()
1906 dev_err(&intf->dev, in hub_probe()
1908 return -E2BIG; in hub_probe()
1912 if (hdev->parent) { in hub_probe()
1913 dev_warn(&intf->dev, "ignoring external hub\n"); in hub_probe()
1914 return -ENODEV; in hub_probe()
1919 dev_err(&intf->dev, "bad descriptor, ignoring hub\n"); in hub_probe()
1920 return -EIO; in hub_probe()
1924 dev_info(&intf->dev, "USB hub found\n"); in hub_probe()
1928 return -ENOMEM; in hub_probe()
1930 kref_init(&hub->kref); in hub_probe()
1931 hub->intfdev = &intf->dev; in hub_probe()
1932 hub->hdev = hdev; in hub_probe()
1933 INIT_DELAYED_WORK(&hub->leds, led_work); in hub_probe()
1934 INIT_DELAYED_WORK(&hub->init_work, NULL); in hub_probe()
1935 INIT_WORK(&hub->events, hub_event); in hub_probe()
1936 INIT_LIST_HEAD(&hub->onboard_devs); in hub_probe()
1937 spin_lock_init(&hub->irq_urb_lock); in hub_probe()
1938 timer_setup(&hub->irq_urb_retry, hub_retry_irq_urb, 0); in hub_probe()
1943 intf->needs_remote_wakeup = 1; in hub_probe()
1944 pm_suspend_ignore_children(&intf->dev, true); in hub_probe()
1946 if (hdev->speed == USB_SPEED_HIGH) in hub_probe()
1949 if (id->driver_info & HUB_QUIRK_CHECK_PORT_AUTOSUSPEND) in hub_probe()
1950 hub->quirk_check_port_auto_suspend = 1; in hub_probe()
1952 if (id->driver_info & HUB_QUIRK_DISABLE_AUTOSUSPEND) { in hub_probe()
1953 hub->quirk_disable_autosuspend = 1; in hub_probe()
1957 if ((id->driver_info & HUB_QUIRK_REDUCE_FRAME_INTR_BINTERVAL) && in hub_probe()
1958 desc->endpoint[0].desc.bInterval > USB_REDUCE_FRAME_INTR_BINTERVAL) { in hub_probe()
1959 desc->endpoint[0].desc.bInterval = in hub_probe()
1965 if (hub_configure(hub, &desc->endpoint[0].desc) >= 0) { in hub_probe()
1966 onboard_dev_create_pdevs(hdev, &hub->onboard_devs); in hub_probe()
1972 return -ENODEV; in hub_probe()
1988 if (hdev->devnum <= 0) in hub_ioctl()
1989 info->nports = 0; in hub_ioctl()
1991 info->nports = hdev->maxchild; in hub_ioctl()
1992 for (i = 0; i < info->nports; i++) { in hub_ioctl()
1993 if (hub->ports[i]->child == NULL) in hub_ioctl()
1994 info->port[i] = 0; in hub_ioctl()
1996 info->port[i] = in hub_ioctl()
1997 hub->ports[i]->child->devnum; in hub_ioctl()
2002 return info->nports + 1; in hub_ioctl()
2006 return -ENOSYS; in hub_ioctl()
2019 if (hdev->state == USB_STATE_NOTATTACHED) in find_port_owner()
2020 return -ENODEV; in find_port_owner()
2021 if (port1 == 0 || port1 > hdev->maxchild) in find_port_owner()
2022 return -EINVAL; in find_port_owner()
2027 *ppowner = &(hub->ports[port1 - 1]->port_owner); in find_port_owner()
2042 return -EBUSY; in usb_hub_claim_port()
2058 return -ENOENT; in usb_hub_release_port()
2069 for (n = 0; n < hdev->maxchild; n++) { in usb_hub_release_all_ports()
2070 if (hub->ports[n]->port_owner == owner) in usb_hub_release_all_ports()
2071 hub->ports[n]->port_owner = NULL; in usb_hub_release_all_ports()
2081 if (udev->state == USB_STATE_NOTATTACHED || !udev->parent) in usb_device_is_owned()
2083 hub = usb_hub_to_struct_hub(udev->parent); in usb_device_is_owned()
2084 return !!hub->ports[udev->portnum - 1]->port_owner; in usb_device_is_owned()
2092 if (udev->parent) { in update_port_device_state()
2093 hub = usb_hub_to_struct_hub(udev->parent); in update_port_device_state()
2103 port_dev = hub->ports[udev->portnum - 1]; in update_port_device_state()
2104 WRITE_ONCE(port_dev->state, udev->state); in update_port_device_state()
2105 sysfs_notify_dirent(port_dev->state_kn); in update_port_device_state()
2115 for (i = 0; i < udev->maxchild; ++i) { in recursively_mark_NOTATTACHED()
2116 if (hub->ports[i]->child) in recursively_mark_NOTATTACHED()
2117 recursively_mark_NOTATTACHED(hub->ports[i]->child); in recursively_mark_NOTATTACHED()
2119 if (udev->state == USB_STATE_SUSPENDED) in recursively_mark_NOTATTACHED()
2120 udev->active_duration -= jiffies; in recursively_mark_NOTATTACHED()
2121 udev->state = USB_STATE_NOTATTACHED; in recursively_mark_NOTATTACHED()
2126 * usb_set_device_state - change a device's current state (usbcore, hcds)
2130 * udev->state is _not_ fully protected by the device lock. Although
2141 * If udev->state is already USB_STATE_NOTATTACHED then no change is made.
2142 * Otherwise udev->state is set to new_state, and if new_state is
2150 int wakeup = -1; in usb_set_device_state()
2153 if (udev->state == USB_STATE_NOTATTACHED) in usb_set_device_state()
2157 /* root hub wakeup capabilities are managed out-of-band in usb_set_device_state()
2160 if (udev->parent) { in usb_set_device_state()
2161 if (udev->state == USB_STATE_SUSPENDED in usb_set_device_state()
2165 wakeup = (udev->quirks & in usb_set_device_state()
2167 udev->actconfig->desc.bmAttributes & in usb_set_device_state()
2172 if (udev->state == USB_STATE_SUSPENDED && in usb_set_device_state()
2174 udev->active_duration -= jiffies; in usb_set_device_state()
2176 udev->state != USB_STATE_SUSPENDED) in usb_set_device_state()
2177 udev->active_duration += jiffies; in usb_set_device_state()
2178 udev->state = new_state; in usb_set_device_state()
2184 device_set_wakeup_capable(&udev->dev, wakeup); in usb_set_device_state()
2191 * Device numbers are used as filenames in usbfs. On USB-1.1 and
2192 * USB-2.0 buses they are also used as device addresses, however on
2193 * USB-3.0 buses the address is assigned by the controller hardware
2204 struct usb_bus *bus = udev->bus; in choose_devnum()
2207 mutex_lock(&bus->devnum_next_mutex); in choose_devnum()
2209 /* Try to allocate the next devnum beginning at bus->devnum_next. */ in choose_devnum()
2210 devnum = find_next_zero_bit(bus->devmap, 128, bus->devnum_next); in choose_devnum()
2212 devnum = find_next_zero_bit(bus->devmap, 128, 1); in choose_devnum()
2213 bus->devnum_next = (devnum >= 127 ? 1 : devnum + 1); in choose_devnum()
2215 set_bit(devnum, bus->devmap); in choose_devnum()
2216 udev->devnum = devnum; in choose_devnum()
2218 mutex_unlock(&bus->devnum_next_mutex); in choose_devnum()
2223 if (udev->devnum > 0) { in release_devnum()
2224 clear_bit(udev->devnum, udev->bus->devmap); in release_devnum()
2225 udev->devnum = -1; in release_devnum()
2231 udev->devnum = devnum; in update_devnum()
2232 if (!udev->devaddr) in update_devnum()
2233 udev->devaddr = (u8)devnum; in update_devnum()
2238 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in hub_free_dev()
2241 if (hcd->driver->free_dev && udev->parent) in hub_free_dev()
2242 hcd->driver->free_dev(hcd, udev); in hub_free_dev()
2251 for (i = 0; i < udev->maxchild; i++) { in hub_disconnect_children()
2252 if (hub->ports[i]->child) in hub_disconnect_children()
2253 usb_disconnect(&hub->ports[i]->child); in hub_disconnect_children()
2258 * usb_disconnect - disconnect a device (usbcore-internal)
2286 dev_info(&udev->dev, "USB disconnect, device number %d\n", in usb_disconnect()
2287 udev->devnum); in usb_disconnect()
2293 pm_runtime_barrier(&udev->dev); in usb_disconnect()
2303 dev_dbg(&udev->dev, "unregistering device\n"); in usb_disconnect()
2307 if (udev->parent) { in usb_disconnect()
2308 port1 = udev->portnum; in usb_disconnect()
2309 hub = usb_hub_to_struct_hub(udev->parent); in usb_disconnect()
2310 port_dev = hub->ports[port1 - 1]; in usb_disconnect()
2312 sysfs_remove_link(&udev->dev.kobj, "port"); in usb_disconnect()
2313 sysfs_remove_link(&port_dev->dev.kobj, "device"); in usb_disconnect()
2316 * As usb_port_runtime_resume() de-references udev, make in usb_disconnect()
2319 if (!test_and_set_bit(port1, hub->child_usage_bits)) in usb_disconnect()
2320 pm_runtime_get_sync(&port_dev->dev); in usb_disconnect()
2322 typec_deattach(port_dev->connector, &udev->dev); in usb_disconnect()
2325 usb_remove_ep_devs(&udev->ep0); in usb_disconnect()
2329 * for de-configuring the device and invoking the remove-device in usb_disconnect()
2332 device_del(&udev->dev); in usb_disconnect()
2344 if (port_dev && test_and_clear_bit(port1, hub->child_usage_bits)) in usb_disconnect()
2345 pm_runtime_put(&port_dev->dev); in usb_disconnect()
2349 put_device(&udev->dev); in usb_disconnect()
2357 dev_info(&udev->dev, "%s: %s\n", id, string); in show_string()
2362 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); in announce_device()
2364 dev_info(&udev->dev, in announce_device()
2366 le16_to_cpu(udev->descriptor.idVendor), in announce_device()
2367 le16_to_cpu(udev->descriptor.idProduct), in announce_device()
2369 dev_info(&udev->dev, in announce_device()
2371 udev->descriptor.iManufacturer, in announce_device()
2372 udev->descriptor.iProduct, in announce_device()
2373 udev->descriptor.iSerialNumber); in announce_device()
2374 show_string(udev, "Product", udev->product); in announce_device()
2375 show_string(udev, "Manufacturer", udev->manufacturer); in announce_device()
2376 show_string(udev, "SerialNumber", udev->serial); in announce_device()
2384 * usb_enumerate_device_otg - FIXME (usbcore-internal)
2387 * Finish enumeration for On-The-Go devices
2397 * OTG-aware devices on OTG-capable root hubs may be able to use SRP, in usb_enumerate_device_otg()
2401 if (!udev->bus->is_b_host in usb_enumerate_device_otg()
2402 && udev->config in usb_enumerate_device_otg()
2403 && udev->parent == udev->bus->root_hub) { in usb_enumerate_device_otg()
2405 struct usb_bus *bus = udev->bus; in usb_enumerate_device_otg()
2406 unsigned port1 = udev->portnum; in usb_enumerate_device_otg()
2409 err = __usb_get_extra_descriptor(udev->rawdescriptors[0], in usb_enumerate_device_otg()
2410 le16_to_cpu(udev->config[0].desc.wTotalLength), in usb_enumerate_device_otg()
2412 if (err || !(desc->bmAttributes & USB_OTG_HNP)) in usb_enumerate_device_otg()
2415 dev_info(&udev->dev, "Dual-Role OTG device on %sHNP port\n", in usb_enumerate_device_otg()
2416 (port1 == bus->otg_port) ? "" : "non-"); in usb_enumerate_device_otg()
2419 if (port1 == bus->otg_port) { in usb_enumerate_device_otg()
2420 bus->b_hnp_enable = 1; in usb_enumerate_device_otg()
2432 dev_err(&udev->dev, "can't set HNP mode: %d\n", in usb_enumerate_device_otg()
2434 bus->b_hnp_enable = 0; in usb_enumerate_device_otg()
2436 } else if (desc->bLength == sizeof in usb_enumerate_device_otg()
2444 if (bus->otg_port != 0) { in usb_enumerate_device_otg()
2453 dev_err(&udev->dev, in usb_enumerate_device_otg()
2465 * usb_enumerate_device - Read device configs/intfs/otg (usbcore-internal)
2468 * This is only called by usb_new_device() -- all comments that apply there
2480 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_enumerate_device()
2482 if (udev->config == NULL) { in usb_enumerate_device()
2485 if (err != -ENODEV) in usb_enumerate_device()
2486 dev_err(&udev->dev, "can't read configurations, error %d\n", in usb_enumerate_device()
2493 udev->product = usb_cache_string(udev, udev->descriptor.iProduct); in usb_enumerate_device()
2494 udev->manufacturer = usb_cache_string(udev, in usb_enumerate_device()
2495 udev->descriptor.iManufacturer); in usb_enumerate_device()
2496 udev->serial = usb_cache_string(udev, udev->descriptor.iSerialNumber); in usb_enumerate_device()
2502 if (IS_ENABLED(CONFIG_USB_OTG_PRODUCTLIST) && hcd->tpl_support && in usb_enumerate_device()
2507 if (IS_ENABLED(CONFIG_USB_OTG) && (udev->bus->b_hnp_enable in usb_enumerate_device()
2508 || udev->bus->is_b_host)) { in usb_enumerate_device()
2511 dev_dbg(&udev->dev, "HNP fail, %d\n", err); in usb_enumerate_device()
2513 return -ENOTSUPP; in usb_enumerate_device()
2523 struct usb_device *hdev = udev->parent; in set_usb_port_removable()
2525 u8 port = udev->portnum; in set_usb_port_removable()
2529 dev_set_removable(&udev->dev, DEVICE_REMOVABLE_UNKNOWN); in set_usb_port_removable()
2534 hub = usb_hub_to_struct_hub(udev->parent); in set_usb_port_removable()
2540 switch (hub->ports[udev->portnum - 1]->connect_type) { in set_usb_port_removable()
2542 dev_set_removable(&udev->dev, DEVICE_REMOVABLE); in set_usb_port_removable()
2546 dev_set_removable(&udev->dev, DEVICE_FIXED); in set_usb_port_removable()
2556 wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); in set_usb_port_removable()
2562 if (le16_to_cpu(hub->descriptor->u.ss.DeviceRemovable) in set_usb_port_removable()
2566 if (hub->descriptor->u.hs.DeviceRemovable[port / 8] & (1 << (port % 8))) in set_usb_port_removable()
2571 dev_set_removable(&udev->dev, DEVICE_REMOVABLE); in set_usb_port_removable()
2573 dev_set_removable(&udev->dev, DEVICE_FIXED); in set_usb_port_removable()
2578 * usb_new_device - perform initial device setup (usbcore-internal)
2591 * Only the hub driver or root-hub registrar should ever call this.
2602 if (udev->parent) { in usb_new_device()
2603 /* Initialize non-root-hub device wakeup to disabled; in usb_new_device()
2607 device_init_wakeup(&udev->dev, 0); in usb_new_device()
2610 /* Tell the runtime-PM framework the device is active */ in usb_new_device()
2611 pm_runtime_set_active(&udev->dev); in usb_new_device()
2612 pm_runtime_get_noresume(&udev->dev); in usb_new_device()
2613 pm_runtime_use_autosuspend(&udev->dev); in usb_new_device()
2614 pm_runtime_enable(&udev->dev); in usb_new_device()
2624 dev_dbg(&udev->dev, "udev %d, busnum %d, minor = %d\n", in usb_new_device()
2625 udev->devnum, udev->bus->busnum, in usb_new_device()
2626 (((udev->bus->busnum-1) * 128) + (udev->devnum-1))); in usb_new_device()
2627 /* export the usbdev device-node for libusb */ in usb_new_device()
2628 udev->dev.devt = MKDEV(USB_DEVICE_MAJOR, in usb_new_device()
2629 (((udev->bus->busnum-1) * 128) + (udev->devnum-1))); in usb_new_device()
2634 if (udev->serial) in usb_new_device()
2635 add_device_randomness(udev->serial, strlen(udev->serial)); in usb_new_device()
2636 if (udev->product) in usb_new_device()
2637 add_device_randomness(udev->product, strlen(udev->product)); in usb_new_device()
2638 if (udev->manufacturer) in usb_new_device()
2639 add_device_randomness(udev->manufacturer, in usb_new_device()
2640 strlen(udev->manufacturer)); in usb_new_device()
2642 device_enable_async_suspend(&udev->dev); in usb_new_device()
2644 /* check whether the hub or firmware marks this port as non-removable */ in usb_new_device()
2648 * for configuring the device and invoking the add-device in usb_new_device()
2651 err = device_add(&udev->dev); in usb_new_device()
2653 dev_err(&udev->dev, "can't device_add, error %d\n", err); in usb_new_device()
2658 if (udev->parent) { in usb_new_device()
2659 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_new_device()
2660 int port1 = udev->portnum; in usb_new_device()
2661 struct usb_port *port_dev = hub->ports[port1 - 1]; in usb_new_device()
2663 err = sysfs_create_link(&udev->dev.kobj, in usb_new_device()
2664 &port_dev->dev.kobj, "port"); in usb_new_device()
2668 err = sysfs_create_link(&port_dev->dev.kobj, in usb_new_device()
2669 &udev->dev.kobj, "device"); in usb_new_device()
2671 sysfs_remove_link(&udev->dev.kobj, "port"); in usb_new_device()
2675 if (!test_and_set_bit(port1, hub->child_usage_bits)) in usb_new_device()
2676 pm_runtime_get_sync(&port_dev->dev); in usb_new_device()
2678 typec_attach(port_dev->connector, &udev->dev); in usb_new_device()
2681 (void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev); in usb_new_device()
2683 pm_runtime_put_sync_autosuspend(&udev->dev); in usb_new_device()
2688 pm_runtime_disable(&udev->dev); in usb_new_device()
2689 pm_runtime_set_suspended(&udev->dev); in usb_new_device()
2695 * usb_deauthorize_device - deauthorize a device (usbcore-internal)
2709 if (usb_dev->authorized == 0) in usb_deauthorize_device()
2712 usb_dev->authorized = 0; in usb_deauthorize_device()
2713 usb_set_configuration(usb_dev, -1); in usb_deauthorize_device()
2726 if (usb_dev->authorized == 1) in usb_authorize_device()
2731 dev_err(&usb_dev->dev, in usb_authorize_device()
2736 usb_dev->authorized = 1; in usb_authorize_device()
2744 dev_err(&usb_dev->dev, in usb_authorize_device()
2750 dev_info(&usb_dev->dev, "authorized to connect\n"); in usb_authorize_device()
2760 * get_port_ssp_rate - Match the extended port status to SSP rate
2778 if (!hdev->bos) in get_port_ssp_rate()
2781 ssp_cap = hdev->bos->ssp_cap; in get_port_ssp_rate()
2788 ssac = le32_to_cpu(ssp_cap->bmAttributes) & in get_port_ssp_rate()
2794 attr = le32_to_cpu(ssp_cap->bmSublinkSpeedAttr[i]); in get_port_ssp_rate()
2865 (port_dev->quirks & USB_PORT_QUIRK_OLD_SCHEME) || in use_new_scheme()
2875 if (udev->speed >= USB_SPEED_SUPER) in use_new_scheme()
2896 if (!hub_is_superspeed(hub->hdev)) in hub_port_warm_reset_required()
2899 if (test_bit(port1, hub->warm_reset_bits)) in hub_port_warm_reset_required()
2922 if (hub_is_superspeedplus(hub->hdev)) in hub_port_wait_reset()
2937 * to re-establish a connection after the reset is complete, in hub_port_wait_reset()
2938 * so also wait for the connection to be re-established. in hub_port_wait_reset()
2948 dev_dbg(&hub->ports[port1 - 1]->dev, in hub_port_wait_reset()
2954 return -EBUSY; in hub_port_wait_reset()
2957 return -ENOTCONN; in hub_port_wait_reset()
2961 return -ENOTCONN; in hub_port_wait_reset()
2965 * but the device may have successfully re-connected. Ignore it. in hub_port_wait_reset()
2967 if (!hub_is_superspeed(hub->hdev) && in hub_port_wait_reset()
2969 usb_clear_port_feature(hub->hdev, port1, in hub_port_wait_reset()
2971 return -EAGAIN; in hub_port_wait_reset()
2975 return -EBUSY; in hub_port_wait_reset()
2980 if (hub_is_superspeedplus(hub->hdev)) { in hub_port_wait_reset()
2982 udev->rx_lanes = USB_EXT_PORT_RX_LANES(ext_portstatus) + 1; in hub_port_wait_reset()
2983 udev->tx_lanes = USB_EXT_PORT_TX_LANES(ext_portstatus) + 1; in hub_port_wait_reset()
2984 udev->ssp_rate = get_port_ssp_rate(hub->hdev, ext_portstatus); in hub_port_wait_reset()
2986 udev->rx_lanes = 1; in hub_port_wait_reset()
2987 udev->tx_lanes = 1; in hub_port_wait_reset()
2988 udev->ssp_rate = USB_SSP_GEN_UNKNOWN; in hub_port_wait_reset()
2990 if (udev->ssp_rate != USB_SSP_GEN_UNKNOWN) in hub_port_wait_reset()
2991 udev->speed = USB_SPEED_SUPER_PLUS; in hub_port_wait_reset()
2992 else if (hub_is_superspeed(hub->hdev)) in hub_port_wait_reset()
2993 udev->speed = USB_SPEED_SUPER; in hub_port_wait_reset()
2995 udev->speed = USB_SPEED_HIGH; in hub_port_wait_reset()
2997 udev->speed = USB_SPEED_LOW; in hub_port_wait_reset()
2999 udev->speed = USB_SPEED_FULL; in hub_port_wait_reset()
3009 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_reset()
3012 if (!hub_is_superspeed(hub->hdev)) { in hub_port_reset()
3014 dev_err(hub->intfdev, "only USB3 hub support " in hub_port_reset()
3016 return -EINVAL; in hub_port_reset()
3033 clear_bit(port1, hub->warm_reset_bits); in hub_port_reset()
3037 status = set_port_feature(hub->hdev, port1, (warm ? in hub_port_reset()
3040 if (status == -ENODEV) { in hub_port_reset()
3043 dev_err(&port_dev->dev, in hub_port_reset()
3049 if (status && status != -ENOTCONN && status != -ENODEV) in hub_port_reset()
3050 dev_dbg(hub->intfdev, in hub_port_reset()
3059 if (status == 0 || status == -ENOTCONN || status == -ENODEV || in hub_port_reset()
3060 (status == -EBUSY && i == PORT_RESET_TRIES - 1)) { in hub_port_reset()
3061 usb_clear_port_feature(hub->hdev, port1, in hub_port_reset()
3064 if (!hub_is_superspeed(hub->hdev)) in hub_port_reset()
3067 usb_clear_port_feature(hub->hdev, port1, in hub_port_reset()
3069 usb_clear_port_feature(hub->hdev, port1, in hub_port_reset()
3073 usb_clear_port_feature(hub->hdev, port1, in hub_port_reset()
3078 * state, re-issue the warm reset. in hub_port_reset()
3093 dev_dbg(&port_dev->dev, in hub_port_reset()
3099 dev_dbg(&port_dev->dev, in hub_port_reset()
3105 dev_err(&port_dev->dev, "Cannot enable. Maybe the USB cable is bad?\n"); in hub_port_reset()
3109 if (port_dev->quirks & USB_PORT_QUIRK_FAST_ENUM) in hub_port_reset()
3116 if (hub->hdev->quirks & USB_QUIRK_HUB_SLOW_RESET) in hub_port_reset()
3123 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in hub_port_reset()
3129 if (hcd->driver->reset_device) in hub_port_reset()
3130 hcd->driver->reset_device(hcd, udev); in hub_port_reset()
3139 if (!hub_is_superspeed(hub->hdev)) in hub_port_reset()
3146 * hub_port_stop_enumerate - stop USB enumeration or ignore port events
3165 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_stop_enumerate()
3167 if (port_dev->early_stop) { in hub_port_stop_enumerate()
3168 if (port_dev->ignore_event) in hub_port_stop_enumerate()
3180 port_dev->ignore_event = 1; in hub_port_stop_enumerate()
3182 port_dev->ignore_event = 0; in hub_port_stop_enumerate()
3184 return port_dev->ignore_event; in hub_port_stop_enumerate()
3192 if (hub_is_superspeed(hub->hdev)) { in usb_port_is_power_on()
3204 __acquires(&port_dev->status_lock) in usb_lock_port()
3206 mutex_lock(&port_dev->status_lock); in usb_lock_port()
3207 __acquire(&port_dev->status_lock); in usb_lock_port()
3211 __releases(&port_dev->status_lock) in usb_unlock_port()
3213 mutex_unlock(&port_dev->status_lock); in usb_unlock_port()
3214 __release(&port_dev->status_lock); in usb_unlock_port()
3224 if (hub_is_superspeed(hub->hdev)) { in port_is_suspended()
3237 * is ready for a reset-resume, or should be disconnected.
3243 struct usb_port *port_dev = hub->ports[port1 - 1]; in check_port_resume_type()
3248 if (status == 0 && udev->reset_resume in check_port_resume_type()
3256 status = -ENODEV; in check_port_resume_type()
3258 if (retries--) { in check_port_resume_type()
3264 status = -ENODEV; in check_port_resume_type()
3268 * so try a reset-resume instead. in check_port_resume_type()
3270 else if (!(portstatus & USB_PORT_STAT_ENABLE) && !udev->reset_resume) { in check_port_resume_type()
3271 if (udev->persist_enabled) in check_port_resume_type()
3272 udev->reset_resume = 1; in check_port_resume_type()
3274 status = -ENODEV; in check_port_resume_type()
3278 dev_dbg(&port_dev->dev, "status %04x.%04x after resume, %d\n", in check_port_resume_type()
3280 } else if (udev->reset_resume) { in check_port_resume_type()
3282 /* Late port handoff can set status-change bits */ in check_port_resume_type()
3284 usb_clear_port_feature(hub->hdev, port1, in check_port_resume_type()
3287 usb_clear_port_feature(hub->hdev, port1, in check_port_resume_type()
3291 * Whatever made this reset-resume necessary may have in check_port_resume_type()
3292 * turned on the port1 bit in hub->change_bits. But after in check_port_resume_type()
3293 * a successful reset-resume we want the bit to be clear; in check_port_resume_type()
3295 * following the reset-resume. in check_port_resume_type()
3297 clear_bit(port1, hub->change_bits); in check_port_resume_type()
3305 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_disable_ltm()
3308 if (!usb_device_supports_ltm(hcd->self.root_hub) || in usb_disable_ltm()
3315 if (!udev->actconfig) in usb_disable_ltm()
3327 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_enable_ltm()
3330 if (!usb_device_supports_ltm(hcd->self.root_hub) || in usb_enable_ltm()
3337 if (!udev->actconfig) in usb_enable_ltm()
3348 * usb_enable_remote_wakeup - enable remote wakeup for a device
3351 * For USB-2 devices: Set the device's remote wakeup feature.
3353 * For USB-3 devices: Assume there's only one function on the device and
3359 if (udev->speed < USB_SPEED_SUPER) in usb_enable_remote_wakeup()
3374 * usb_disable_remote_wakeup - disable remote wakeup for a device
3377 * For USB-2 devices: Clear the device's remote wakeup feature.
3379 * For USB-3 devices: Assume there's only one function on the device and
3385 if (udev->speed < USB_SPEED_SUPER) in usb_disable_remote_wakeup()
3397 /* Count of wakeup-enabled devices at or below udev */
3402 return udev->do_remote_wakeup + in usb_wakeup_enabled_descendants()
3403 (hub ? hub->wakeup_enabled_descendants : 0); in usb_wakeup_enabled_descendants()
3408 * usb_port_suspend - suspend a usb device's upstream port
3431 * between a pair of dual-role devices. That will change roles, such
3432 * as from A-Host to A-Peripheral or from B-Host back to B-Peripheral.
3438 * - suspend, resume ... when the VBUS power link stays live
3439 * - suspend, disconnect ... VBUS lost
3442 * normal re-enumeration procedures, starting with enabling VBUS power.
3443 * Other than re-initializing the hub (plug/unplug, except for root hubs),
3447 * If Runtime PM isn't enabled or used, non-SuperSpeed devices may not get
3449 * hub is suspended). Nevertheless, we change @udev->state to
3451 * upstream port setting is stored in @udev->port_is_suspended.
3457 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_suspend()
3458 struct usb_port *port_dev = hub->ports[udev->portnum - 1]; in usb_port_suspend()
3459 int port1 = udev->portnum; in usb_port_suspend()
3471 if (udev->do_remote_wakeup) { in usb_port_suspend()
3474 dev_dbg(&udev->dev, "won't remote wakeup, status %d\n", in usb_port_suspend()
3486 dev_err(&udev->dev, "Failed to disable LTM before suspend\n"); in usb_port_suspend()
3487 status = -ENOMEM; in usb_port_suspend()
3493 if (hub_is_superspeed(hub->hdev)) in usb_port_suspend()
3498 * on individual USB-2 ports. The devices will automatically go in usb_port_suspend()
3508 status = set_port_feature(hub->hdev, port1, in usb_port_suspend()
3518 if (status == -ETIMEDOUT) { in usb_port_suspend()
3526 dev_dbg(&port_dev->dev, in usb_port_suspend()
3535 dev_dbg(&port_dev->dev, "can't suspend, status %d\n", status); in usb_port_suspend()
3543 if (udev->do_remote_wakeup) in usb_port_suspend()
3552 dev_dbg(&udev->dev, "usb %ssuspend, wakeup %d\n", in usb_port_suspend()
3553 (PMSG_IS_AUTO(msg) ? "auto-" : ""), in usb_port_suspend()
3554 udev->do_remote_wakeup); in usb_port_suspend()
3556 udev->port_is_suspended = 1; in usb_port_suspend()
3564 if (status == 0 && !udev->do_remote_wakeup && udev->persist_enabled in usb_port_suspend()
3565 && test_and_clear_bit(port1, hub->child_usage_bits)) in usb_port_suspend()
3566 pm_runtime_put_sync(&port_dev->dev); in usb_port_suspend()
3568 usb_mark_last_busy(hub->hdev); in usb_port_suspend()
3582 * If @udev->reset_resume is set then the device is reset before the
3591 dev_dbg(&udev->dev, "%s\n", in finish_port_resume()
3592 udev->reset_resume ? "finish reset-resume" : "finish resume"); in finish_port_resume()
3599 usb_set_device_state(udev, udev->actconfig in finish_port_resume()
3608 if (udev->reset_resume) { in finish_port_resume()
3611 * we don't want to perform a reset-resume. We'll fail the in finish_port_resume()
3616 if (udev->quirks & USB_QUIRK_RESET) in finish_port_resume()
3617 status = -ENODEV; in finish_port_resume()
3630 /* If a normal resume failed, try doing a reset-resume */ in finish_port_resume()
3631 if (status && !udev->reset_resume && udev->persist_enabled) { in finish_port_resume()
3632 dev_dbg(&udev->dev, "retry with reset-resume\n"); in finish_port_resume()
3633 udev->reset_resume = 1; in finish_port_resume()
3639 dev_dbg(&udev->dev, "gone after usb resume? status %d\n", in finish_port_resume()
3645 * udev->reset_resume in finish_port_resume()
3647 } else if (udev->actconfig && !udev->reset_resume) { in finish_port_resume()
3648 if (udev->speed < USB_SPEED_SUPER) { in finish_port_resume()
3660 dev_dbg(&udev->dev, in finish_port_resume()
3702 status = -ENODEV; in wait_for_connected()
3709 dev_dbg(&udev->dev, "Waited %dms for CONNECT\n", delay_ms); in wait_for_connected()
3714 * usb_port_resume - re-activate a suspended usb device's upstream port
3715 * @udev: device to re-activate, not a root hub
3718 * This will re-activate the suspended device, increasing power usage
3724 * If @udev->reset_resume is set then this routine won't check that the
3732 * for mass-storage devices containing mounted filesystems, since the
3749 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_resume()
3750 struct usb_port *port_dev = hub->ports[udev->portnum - 1]; in usb_port_resume()
3751 int port1 = udev->portnum; in usb_port_resume()
3755 if (!test_and_set_bit(port1, hub->child_usage_bits)) { in usb_port_resume()
3756 status = pm_runtime_resume_and_get(&port_dev->dev); in usb_port_resume()
3758 dev_dbg(&udev->dev, "can't resume usb port, status %d\n", in usb_port_resume()
3766 /* Skip the initial Clear-Suspend step for a remote wakeup */ in usb_port_resume()
3770 pm_wakeup_event(&udev->dev, 0); in usb_port_resume()
3775 if (hub_is_superspeed(hub->hdev)) in usb_port_resume()
3778 status = usb_clear_port_feature(hub->hdev, in usb_port_resume()
3781 dev_dbg(&port_dev->dev, "can't resume, status %d\n", status); in usb_port_resume()
3784 dev_dbg(&udev->dev, "usb %sresume\n", in usb_port_resume()
3785 (PMSG_IS_AUTO(msg) ? "auto-" : "")); in usb_port_resume()
3797 udev->port_is_suspended = 0; in usb_port_resume()
3798 if (hub_is_superspeed(hub->hdev)) { in usb_port_resume()
3800 usb_clear_port_feature(hub->hdev, port1, in usb_port_resume()
3804 usb_clear_port_feature(hub->hdev, port1, in usb_port_resume()
3812 if (udev->persist_enabled) in usb_port_resume()
3821 dev_dbg(&udev->dev, "can't resume, status %d\n", status); in usb_port_resume()
3841 if (udev->state == USB_STATE_SUSPENDED) { in usb_remote_wakeup()
3842 dev_dbg(&udev->dev, "usb %sresume\n", "wakeup-"); in usb_remote_wakeup()
3856 __must_hold(&port_dev->status_lock) in hub_handle_remote_wakeup()
3858 struct usb_port *port_dev = hub->ports[port - 1]; in hub_handle_remote_wakeup()
3865 hdev = hub->hdev; in hub_handle_remote_wakeup()
3866 udev = port_dev->child; in hub_handle_remote_wakeup()
3873 if (!udev || udev->state != USB_STATE_SUSPENDED || in hub_handle_remote_wakeup()
3890 ret = -ENODEV; in hub_handle_remote_wakeup()
3893 dev_dbg(&port_dev->dev, "resume, status %d\n", ret); in hub_handle_remote_wakeup()
3901 for (port1 = 1; port1 <= hub->hdev->maxchild; ++port1) { in check_ports_changed()
3915 struct usb_device *hdev = hub->hdev; in hub_suspend()
3920 * Also, add up the number of wakeup-enabled descendants. in hub_suspend()
3922 hub->wakeup_enabled_descendants = 0; in hub_suspend()
3923 for (port1 = 1; port1 <= hdev->maxchild; port1++) { in hub_suspend()
3924 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_suspend()
3925 struct usb_device *udev = port_dev->child; in hub_suspend()
3927 if (udev && udev->can_submit) { in hub_suspend()
3928 dev_warn(&port_dev->dev, "device %s not suspended yet\n", in hub_suspend()
3929 dev_name(&udev->dev)); in hub_suspend()
3931 return -EBUSY; in hub_suspend()
3934 hub->wakeup_enabled_descendants += in hub_suspend()
3938 if (hdev->do_remote_wakeup && hub->quirk_check_port_auto_suspend) { in hub_suspend()
3942 return -EBUSY; in hub_suspend()
3943 pm_wakeup_event(&hdev->dev, 2000); in hub_suspend()
3947 if (hub_is_superspeed(hdev) && hdev->do_remote_wakeup) { in hub_suspend()
3949 for (port1 = 1; port1 <= hdev->maxchild; port1++) { in hub_suspend()
3959 dev_dbg(&intf->dev, "%s\n", __func__); in hub_suspend()
3969 struct usb_device *hdev = hub->hdev; in report_wakeup_requests()
3975 if (hdev->parent) in report_wakeup_requests()
3978 hcd = bus_to_hcd(hdev->bus); in report_wakeup_requests()
3979 if (hcd->driver->get_resuming_ports) { in report_wakeup_requests()
3989 resuming_ports = hcd->driver->get_resuming_ports(hcd); in report_wakeup_requests()
3990 for (i = 0; i < hdev->maxchild; ++i) { in report_wakeup_requests()
3992 udev = hub->ports[i]->child; in report_wakeup_requests()
3994 pm_wakeup_event(&udev->dev, 0); in report_wakeup_requests()
4004 dev_dbg(&intf->dev, "%s\n", __func__); in hub_resume()
4021 dev_dbg(&intf->dev, "%s\n", __func__); in hub_reset_resume()
4027 * usb_root_hub_lost_power - called by HCD if the root hub lost Vbus power
4034 * power-session recovery for all the "USB-PERSIST"-enabled child devices;
4039 dev_notice(&rhdev->dev, "root hub lost power or was reset\n"); in usb_root_hub_lost_power()
4040 rhdev->reset_resume = 1; in usb_root_hub_lost_power()
4053 * device-initiated U1 or U2. This lets the device know the exit latencies from
4069 if (!udev->parent || udev->speed < USB_SPEED_SUPER || !udev->lpm_capable) in usb_req_set_sel()
4073 u1_sel = DIV_ROUND_UP(udev->u1_params.sel, 1000); in usb_req_set_sel()
4074 u1_pel = DIV_ROUND_UP(udev->u1_params.pel, 1000); in usb_req_set_sel()
4075 u2_sel = DIV_ROUND_UP(udev->u2_params.sel, 1000); in usb_req_set_sel()
4076 u2_pel = DIV_ROUND_UP(udev->u2_params.pel, 1000); in usb_req_set_sel()
4083 * latency for the link state, and could start a device-initiated in usb_req_set_sel()
4090 dev_dbg(&udev->dev, "Device-initiated U1/U2 disabled due to long SEL or PEL\n"); in usb_req_set_sel()
4091 return -EINVAL; in usb_req_set_sel()
4101 return -ENOMEM; in usb_req_set_sel()
4103 sel_values->u1_sel = u1_sel; in usb_req_set_sel()
4104 sel_values->u1_pel = u1_pel; in usb_req_set_sel()
4105 sel_values->u2_sel = cpu_to_le16(u2_sel); in usb_req_set_sel()
4106 sel_values->u2_pel = cpu_to_le16(u2_pel); in usb_req_set_sel()
4117 udev->lpm_devinit_allow = 1; in usb_req_set_sel()
4123 * Enable or disable device-initiated U1 or U2 transitions.
4139 dev_warn(&udev->dev, "%s: Can't %s non-U1 or U2 state.\n", in usb_set_device_initiated_lpm()
4141 return -EINVAL; in usb_set_device_initiated_lpm()
4144 if (udev->state != USB_STATE_CONFIGURED) { in usb_set_device_initiated_lpm()
4145 dev_dbg(&udev->dev, "%s: Can't %s %s state " in usb_set_device_initiated_lpm()
4154 * Now send the control transfer to enable device-initiated LPM in usb_set_device_initiated_lpm()
4172 dev_warn(&udev->dev, "%s of device-initiated %s failed.\n", in usb_set_device_initiated_lpm()
4175 return -EBUSY; in usb_set_device_initiated_lpm()
4194 dev_warn(&udev->dev, "%s: Can't set timeout for non-U1 or U2 state.\n", in usb_set_lpm_timeout()
4196 return -EINVAL; in usb_set_lpm_timeout()
4201 dev_warn(&udev->dev, "Failed to set %s timeout to 0x%x, " in usb_set_lpm_timeout()
4204 return -EINVAL; in usb_set_lpm_timeout()
4207 ret = set_port_feature(udev->parent, in usb_set_lpm_timeout()
4208 USB_PORT_LPM_TIMEOUT(timeout) | udev->portnum, in usb_set_lpm_timeout()
4211 dev_warn(&udev->dev, "Failed to set %s timeout to 0x%x," in usb_set_lpm_timeout()
4214 return -EBUSY; in usb_set_lpm_timeout()
4217 udev->u1_params.timeout = timeout; in usb_set_lpm_timeout()
4219 udev->u2_params.timeout = timeout; in usb_set_lpm_timeout()
4234 if (!udev->lpm_devinit_allow) in usb_device_may_initiate_lpm()
4238 sel = DIV_ROUND_UP(udev->u1_params.sel, 1000); in usb_device_may_initiate_lpm()
4240 sel = DIV_ROUND_UP(udev->u2_params.sel, 1000); in usb_device_may_initiate_lpm()
4244 for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) { in usb_device_may_initiate_lpm()
4249 intf = udev->actconfig->interface[i]; in usb_device_may_initiate_lpm()
4253 for (j = 0; j < intf->cur_altsetting->desc.bNumEndpoints; j++) { in usb_device_may_initiate_lpm()
4254 desc = &intf->cur_altsetting->endpoint[j].desc; in usb_device_may_initiate_lpm()
4258 interval = (1 << (desc->bInterval - 1)) * 125; in usb_device_may_initiate_lpm()
4268 * Enable the hub-initiated U1/U2 idle timeouts, and enable device-initiated
4272 * control transfers to set the hub timeout or enable device-initiated U1/U2
4275 * If the control transfer to enable device-initiated U1/U2 entry fails, then
4276 * hub-initiated U1/U2 will be disabled.
4290 if (!udev->bos) in usb_enable_link_state()
4293 u1_mel = udev->bos->ss_cap->bU1devExitLat; in usb_enable_link_state()
4294 u2_mel = udev->bos->ss_cap->bU2DevExitLat; in usb_enable_link_state()
4309 timeout = hcd->driver->enable_usb3_lpm_timeout(hcd, udev, state); in usb_enable_link_state()
4316 dev_warn(&udev->dev, "Could not enable %s link state, " in usb_enable_link_state()
4324 * device-initiated LPM won't be allowed either, so let the xHCI in usb_enable_link_state()
4327 hcd->driver->disable_usb3_lpm_timeout(hcd, udev, state); in usb_enable_link_state()
4334 if (udev->actconfig && in usb_enable_link_state()
4342 hcd->driver->disable_usb3_lpm_timeout(hcd, udev, state); in usb_enable_link_state()
4348 udev->usb3_lpm_u1_enabled = 1; in usb_enable_link_state()
4350 udev->usb3_lpm_u2_enabled = 1; in usb_enable_link_state()
4353 * Disable the hub-initiated U1/U2 idle timeouts, and disable device-initiated
4356 * If this function returns -EBUSY, the parent hub will still allow U1/U2 entry.
4359 * If zero is returned, device-initiated U1/U2 entry may still be enabled, but
4361 * still disallow device-initiated U1/U2 entry.
4375 dev_warn(&udev->dev, "%s: Can't disable non-U1 or U2 state.\n", in usb_disable_link_state()
4377 return -EINVAL; in usb_disable_link_state()
4381 return -EBUSY; in usb_disable_link_state()
4385 if (hcd->driver->disable_usb3_lpm_timeout(hcd, udev, state)) in usb_disable_link_state()
4386 dev_warn(&udev->dev, "Could not disable xHCI %s timeout, " in usb_disable_link_state()
4393 * timeout set to 0, no matter device-initiated LPM is disabled or in usb_disable_link_state()
4397 udev->usb3_lpm_u1_enabled = 0; in usb_disable_link_state()
4399 udev->usb3_lpm_u2_enabled = 0; in usb_disable_link_state()
4405 * Disable hub-initiated and device-initiated U1 and U2 entry.
4409 * lpm_disable_count, and will re-enable LPM if lpm_disable_count reaches zero.
4415 if (!udev || !udev->parent || in usb_disable_lpm()
4416 udev->speed < USB_SPEED_SUPER || in usb_disable_lpm()
4417 !udev->lpm_capable || in usb_disable_lpm()
4418 udev->state < USB_STATE_CONFIGURED) in usb_disable_lpm()
4421 hcd = bus_to_hcd(udev->bus); in usb_disable_lpm()
4422 if (!hcd || !hcd->driver->disable_usb3_lpm_timeout) in usb_disable_lpm()
4425 udev->lpm_disable_count++; in usb_disable_lpm()
4426 if ((udev->u1_params.timeout == 0 && udev->u2_params.timeout == 0)) in usb_disable_lpm()
4439 return -EBUSY; in usb_disable_lpm()
4446 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_unlocked_disable_lpm()
4450 return -EINVAL; in usb_unlocked_disable_lpm()
4452 mutex_lock(hcd->bandwidth_mutex); in usb_unlocked_disable_lpm()
4454 mutex_unlock(hcd->bandwidth_mutex); in usb_unlocked_disable_lpm()
4461 * Attempt to enable device-initiated and hub-initiated U1 and U2 entry. The
4474 if (!udev || !udev->parent || in usb_enable_lpm()
4475 udev->speed < USB_SPEED_SUPER || in usb_enable_lpm()
4476 !udev->lpm_capable || in usb_enable_lpm()
4477 udev->state < USB_STATE_CONFIGURED) in usb_enable_lpm()
4480 udev->lpm_disable_count--; in usb_enable_lpm()
4481 hcd = bus_to_hcd(udev->bus); in usb_enable_lpm()
4485 if (!hcd || !hcd->driver->enable_usb3_lpm_timeout || in usb_enable_lpm()
4486 !hcd->driver->disable_usb3_lpm_timeout) in usb_enable_lpm()
4489 if (udev->lpm_disable_count > 0) in usb_enable_lpm()
4492 hub = usb_hub_to_struct_hub(udev->parent); in usb_enable_lpm()
4496 port_dev = hub->ports[udev->portnum - 1]; in usb_enable_lpm()
4498 if (port_dev->usb3_lpm_u1_permit) in usb_enable_lpm()
4501 if (port_dev->usb3_lpm_u2_permit) in usb_enable_lpm()
4509 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_unlocked_enable_lpm()
4514 mutex_lock(hcd->bandwidth_mutex); in usb_unlocked_enable_lpm()
4516 mutex_unlock(hcd->bandwidth_mutex); in usb_unlocked_enable_lpm()
4524 struct usb_device *udev = port_dev->child; in hub_usb3_port_prepare_disable()
4527 if (udev && udev->port_is_suspended && udev->do_remote_wakeup) { in hub_usb3_port_prepare_disable()
4528 ret = hub_set_port_link_state(hub, port_dev->portnum, in hub_usb3_port_prepare_disable()
4535 dev_warn(&udev->dev, in hub_usb3_port_prepare_disable()
4537 udev->do_remote_wakeup = 0; in hub_usb3_port_prepare_disable()
4591 * USB-3 does not have a similar link state as USB-2 that will avoid negotiating
4592 * a connection with a plugged-in cable but will signal the host when the cable
4593 * is unplugged. Disable remote wake and set link state to U3 for USB-3 devices
4597 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_disable()
4598 struct usb_device *hdev = hub->hdev; in hub_port_disable()
4601 if (!hub->error) { in hub_port_disable()
4602 if (hub_is_superspeed(hub->hdev)) { in hub_port_disable()
4604 ret = hub_set_port_link_state(hub, port_dev->portnum, in hub_port_disable()
4611 if (port_dev->child && set_state) in hub_port_disable()
4612 usb_set_device_state(port_dev->child, USB_STATE_NOTATTACHED); in hub_port_disable()
4613 if (ret && ret != -ENODEV) in hub_port_disable()
4614 dev_err(&port_dev->dev, "cannot disable (err = %d)\n", ret); in hub_port_disable()
4619 * usb_port_disable - disable a usb device's upstream port
4627 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_disable()
4629 return hub_port_disable(hub, udev->portnum, 0); in usb_port_disable()
4632 /* USB 2.0 spec, 7.1.7.3 / fig 7-29:
4635 * of 100ms at least for debounce and power-settling. The corresponding
4638 * Apparently there are some bluetooth and irda-dongles and a number of
4639 * low-speed devices for which this debounce period may last over a second.
4640 * Not covered by the spec - but easy to deal with.
4643 * connection isn't stable by then it returns -ETIMEDOUT. It checks
4653 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_debounce()
4673 usb_clear_port_feature(hub->hdev, port1, in hub_port_debounce()
4682 dev_dbg(&port_dev->dev, "debounce total %dms stable %dms status 0x%x\n", in hub_port_debounce()
4686 return -ETIMEDOUT; in hub_port_debounce()
4694 usb_enable_endpoint(udev, &udev->ep0, true); in usb_ep0_reinit()
4705 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in hub_set_address()
4706 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in hub_set_address()
4708 if (hub->hdev->quirks & USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT) in hub_set_address()
4715 if (!hcd->driver->address_device && devnum <= 1) in hub_set_address()
4716 return -EINVAL; in hub_set_address()
4717 if (udev->state == USB_STATE_ADDRESS) in hub_set_address()
4719 if (udev->state != USB_STATE_DEFAULT) in hub_set_address()
4720 return -EINVAL; in hub_set_address()
4721 if (hcd->driver->address_device) in hub_set_address()
4722 retval = hcd->driver->address_device(hcd, udev, timeout_ms); in hub_set_address()
4747 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in hub_set_initial_usb2_lpm_policy()
4750 if (!udev->usb2_hw_lpm_capable || !udev->bos) in hub_set_initial_usb2_lpm_policy()
4754 connect_type = hub->ports[udev->portnum - 1]->connect_type; in hub_set_initial_usb2_lpm_policy()
4756 if ((udev->bos->ext_cap->bmAttributes & cpu_to_le32(USB_BESL_SUPPORT)) || in hub_set_initial_usb2_lpm_policy()
4758 udev->usb2_hw_lpm_allowed = 1; in hub_set_initial_usb2_lpm_policy()
4765 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in hub_enable_device()
4767 if (!hcd->driver->enable_device) in hub_enable_device()
4769 if (udev->state == USB_STATE_ADDRESS) in hub_enable_device()
4771 if (udev->state != USB_STATE_DEFAULT) in hub_enable_device()
4772 return -EINVAL; in hub_enable_device()
4774 return hcd->driver->enable_device(hcd, udev); in hub_enable_device()
4804 buf->bDescriptorType = buf->bMaxPacketSize0 = 0; in get_bMaxPacketSize0()
4810 switch (buf->bMaxPacketSize0) { in get_bMaxPacketSize0()
4812 if (buf->bDescriptorType == USB_DT_DEVICE) { in get_bMaxPacketSize0()
4813 rc = buf->bMaxPacketSize0; in get_bMaxPacketSize0()
4819 rc = -EPROTO; in get_bMaxPacketSize0()
4827 * attempt, lest we get into a time-out/reset loop. in get_bMaxPacketSize0()
4829 if (rc > 0 || (rc == -ETIMEDOUT && first_time && in get_bMaxPacketSize0()
4830 udev->speed > USB_SPEED_FULL)) in get_bMaxPacketSize0()
4842 * If this is called for an already-existing device (as part of
4850 * @udev->descriptor. For an already existing device, @dev_descr
4851 * must be non-NULL. The device descriptor will be stored there,
4852 * not in @udev->descriptor, because descriptors for registered
4859 struct usb_device *hdev = hub->hdev; in hub_port_init()
4860 struct usb_hcd *hcd = bus_to_hcd(hdev->bus); in hub_port_init()
4861 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_init()
4864 enum usb_device_speed oldspeed = udev->speed; in hub_port_init()
4866 int devnum = udev->devnum; in hub_port_init()
4875 return -ENOMEM; in hub_port_init()
4880 if (!hdev->parent) { in hub_port_init()
4882 if (port1 == hdev->bus->otg_port) in hub_port_init()
4883 hdev->bus->b_hnp_enable = 0; in hub_port_init()
4898 retval = -ENODEV; in hub_port_init()
4901 if (oldspeed != USB_SPEED_UNKNOWN && oldspeed != udev->speed && in hub_port_init()
4902 !(oldspeed == USB_SPEED_SUPER && udev->speed > oldspeed)) { in hub_port_init()
4903 dev_dbg(&udev->dev, "device reset changed speed!\n"); in hub_port_init()
4906 oldspeed = udev->speed; in hub_port_init()
4912 switch (udev->speed) { in hub_port_init()
4915 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(512); in hub_port_init()
4918 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64); in hub_port_init()
4925 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64); in hub_port_init()
4928 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(8); in hub_port_init()
4935 speed = usb_speed_string(udev->speed); in hub_port_init()
4942 * platform device is usually a dual-role USB controller device. in hub_port_init()
4944 if (udev->bus->controller->driver) in hub_port_init()
4945 driver_name = udev->bus->controller->driver->name; in hub_port_init()
4947 driver_name = udev->bus->sysdev->driver->name; in hub_port_init()
4949 if (udev->speed < USB_SPEED_SUPER) in hub_port_init()
4950 dev_info(&udev->dev, in hub_port_init()
4957 if (hdev->tt) { in hub_port_init()
4958 udev->tt = hdev->tt; in hub_port_init()
4959 udev->ttport = hdev->ttport; in hub_port_init()
4960 } else if (udev->speed != USB_SPEED_HIGH in hub_port_init()
4961 && hdev->speed == USB_SPEED_HIGH) { in hub_port_init()
4962 if (!hub->tt.hub) { in hub_port_init()
4963 dev_err(&udev->dev, "parent hub has no TT\n"); in hub_port_init()
4964 retval = -EINVAL; in hub_port_init()
4967 udev->tt = &hub->tt; in hub_port_init()
4968 udev->ttport = port1; in hub_port_init()
4978 * a 64-byte GET_DESCRIPTOR request. This is what Windows does, in hub_port_init()
4979 * so it may help with some non-standards-compliant devices. in hub_port_init()
4988 retval = -ENODEV; in hub_port_init()
4995 dev_err(&udev->dev, in hub_port_init()
5004 maxp0 != udev->descriptor.bMaxPacketSize0) { in hub_port_init()
5005 dev_err(&udev->dev, "device reset changed ep0 maxpacket size!\n"); in hub_port_init()
5006 retval = -ENODEV; in hub_port_init()
5013 if (oldspeed != udev->speed) { in hub_port_init()
5014 dev_dbg(&udev->dev, in hub_port_init()
5016 retval = -ENODEV; in hub_port_init()
5020 if (maxp0 != -ENODEV) in hub_port_init()
5021 dev_err(&udev->dev, "device descriptor read/64, error %d\n", in hub_port_init()
5035 if (retval != -ENODEV) in hub_port_init()
5036 dev_err(&udev->dev, "device not accepting address %d, error %d\n", in hub_port_init()
5040 if (udev->speed >= USB_SPEED_SUPER) { in hub_port_init()
5041 devnum = udev->devnum; in hub_port_init()
5042 dev_info(&udev->dev, in hub_port_init()
5044 (udev->config) ? "reset" : "new", in hub_port_init()
5045 (udev->speed == USB_SPEED_SUPER_PLUS) ? in hub_port_init()
5047 (udev->ssp_rate == USB_SSP_GEN_2x2) ? in hub_port_init()
5049 (udev->ssp_rate == USB_SSP_GEN_2x1) ? in hub_port_init()
5051 (udev->ssp_rate == USB_SSP_GEN_1x2) ? in hub_port_init()
5058 * - let SET_ADDRESS settle, some device hardware wants it in hub_port_init()
5059 * - read ep0 maxpacket even for high and low speed, in hub_port_init()
5069 if (retval != -ENODEV) in hub_port_init()
5070 dev_err(&udev->dev, in hub_port_init()
5076 if (!initial && maxp0 != udev->descriptor.bMaxPacketSize0) { in hub_port_init()
5077 dev_err(&udev->dev, "device reset changed ep0 maxpacket size!\n"); in hub_port_init()
5078 retval = -ENODEV; in hub_port_init()
5082 delay = udev->parent->hub_delay; in hub_port_init()
5083 udev->hub_delay = min_t(u32, delay, in hub_port_init()
5087 dev_dbg(&udev->dev, in hub_port_init()
5104 if (udev->speed >= USB_SPEED_SUPER) { in hub_port_init()
5110 if (usb_endpoint_maxp(&udev->ep0.desc) == i) { in hub_port_init()
5112 } else if (((udev->speed == USB_SPEED_FULL || in hub_port_init()
5113 udev->speed == USB_SPEED_HIGH) && in hub_port_init()
5115 (udev->speed >= USB_SPEED_SUPER && i > 0)) { in hub_port_init()
5117 if (udev->speed == USB_SPEED_FULL) in hub_port_init()
5118 dev_dbg(&udev->dev, "ep0 maxpacket = %d\n", i); in hub_port_init()
5120 dev_warn(&udev->dev, "Using ep0 maxpacket: %d\n", i); in hub_port_init()
5121 udev->ep0.desc.wMaxPacketSize = cpu_to_le16(i); in hub_port_init()
5125 dev_err(&udev->dev, "Invalid ep0 maxpacket: %d\n", maxp0); in hub_port_init()
5126 retval = -EMSGSIZE; in hub_port_init()
5133 if (retval != -ENODEV) in hub_port_init()
5134 dev_err(&udev->dev, "device descriptor read/all, error %d\n", in hub_port_init()
5139 udev->descriptor = *descr; in hub_port_init()
5150 if ((udev->speed >= USB_SPEED_SUPER) && in hub_port_init()
5151 (le16_to_cpu(udev->descriptor.bcdUSB) < 0x0300)) { in hub_port_init()
5152 dev_err(&udev->dev, "got a wrong device descriptor, warm reset device\n"); in hub_port_init()
5154 retval = -EINVAL; in hub_port_init()
5160 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0201) { in hub_port_init()
5163 udev->lpm_capable = usb_device_supports_lpm(udev); in hub_port_init()
5164 udev->lpm_disable_count = 1; in hub_port_init()
5172 if (hcd->driver->update_device) in hub_port_init()
5173 hcd->driver->update_device(hcd, udev); in hub_port_init()
5190 if (udev->quirks & USB_QUIRK_DEVICE_QUALIFIER) in check_highspeed()
5200 dev_info(&udev->dev, "not running at top speed; " in check_highspeed()
5203 if (hub->has_indicators) { in check_highspeed()
5204 hub->indicator[port1-1] = INDICATOR_GREEN_BLINK; in check_highspeed()
5206 &hub->leds, 0); in check_highspeed()
5215 struct usb_device *hdev = hub->hdev; in hub_power_remaining()
5219 if (!hub->limited_power) in hub_power_remaining()
5222 remaining = hdev->bus_mA - hub->descriptor->bHubContrCurrent; in hub_power_remaining()
5223 for (port1 = 1; port1 <= hdev->maxchild; ++port1) { in hub_power_remaining()
5224 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_power_remaining()
5225 struct usb_device *udev = port_dev->child; in hub_power_remaining()
5240 if (udev->actconfig) in hub_power_remaining()
5241 delta = usb_get_max_power(udev, udev->actconfig); in hub_power_remaining()
5242 else if (port1 != udev->bus->otg_port || hdev->parent) in hub_power_remaining()
5246 if (delta > hub->mA_per_port) in hub_power_remaining()
5247 dev_warn(&port_dev->dev, "%dmA is over %umA budget!\n", in hub_power_remaining()
5248 delta, hub->mA_per_port); in hub_power_remaining()
5249 remaining -= delta; in hub_power_remaining()
5252 dev_warn(hub->intfdev, "%dmA over power budget!\n", in hub_power_remaining()
5253 -remaining); in hub_power_remaining()
5272 if (memcmp(&udev->descriptor, new_device_descriptor, in descriptors_changed()
5276 if ((old_bos && !udev->bos) || (!old_bos && udev->bos)) in descriptors_changed()
5278 if (udev->bos) { in descriptors_changed()
5279 len = le16_to_cpu(udev->bos->desc->wTotalLength); in descriptors_changed()
5280 if (len != le16_to_cpu(old_bos->desc->wTotalLength)) in descriptors_changed()
5282 if (memcmp(udev->bos->desc, old_bos->desc, len)) in descriptors_changed()
5292 if (udev->serial) in descriptors_changed()
5293 serial_len = strlen(udev->serial) + 1; in descriptors_changed()
5296 for (index = 0; index < udev->descriptor.bNumConfigurations; index++) { in descriptors_changed()
5297 old_length = le16_to_cpu(udev->config[index].desc.wTotalLength); in descriptors_changed()
5306 for (index = 0; index < udev->descriptor.bNumConfigurations; index++) { in descriptors_changed()
5307 old_length = le16_to_cpu(udev->config[index].desc.wTotalLength); in descriptors_changed()
5311 dev_dbg(&udev->dev, "config index %d, error %d\n", in descriptors_changed()
5316 if (memcmp(buf, udev->rawdescriptors[index], old_length) in descriptors_changed()
5318 dev_dbg(&udev->dev, "config index %d changed (#%d)\n", in descriptors_changed()
5320 ((struct usb_config_descriptor *) buf)-> in descriptors_changed()
5328 length = usb_string(udev, udev->descriptor.iSerialNumber, in descriptors_changed()
5331 dev_dbg(&udev->dev, "serial string error %d\n", in descriptors_changed()
5334 } else if (memcmp(buf, udev->serial, length) != 0) { in descriptors_changed()
5335 dev_dbg(&udev->dev, "serial string changed\n"); in descriptors_changed()
5347 int status = -ENODEV; in hub_port_connect()
5350 struct usb_device *hdev = hub->hdev; in hub_port_connect()
5351 struct usb_hcd *hcd = bus_to_hcd(hdev->bus); in hub_port_connect()
5352 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_connect()
5353 struct usb_device *udev = port_dev->child; in hub_port_connect()
5354 static int unreliable_port = -1; in hub_port_connect()
5359 if (hcd->usb_phy && !hdev->parent) in hub_port_connect()
5360 usb_phy_notify_disconnect(hcd->usb_phy, udev->speed); in hub_port_connect()
5361 usb_disconnect(&port_dev->child); in hub_port_connect()
5369 clear_bit(port1, hub->removed_bits); in hub_port_connect()
5375 if (status != -ENODEV && in hub_port_connect()
5378 dev_err(&port_dev->dev, "connect-debounce failed\n"); in hub_port_connect()
5390 test_bit(port1, hub->removed_bits)) { in hub_port_connect()
5398 && !port_dev->port_owner) in hub_port_connect()
5405 if (hub_is_superspeed(hub->hdev)) in hub_port_connect()
5414 status = -ENODEV; in hub_port_connect()
5419 mutex_lock(hcd->address0_mutex); in hub_port_connect()
5424 udev = usb_alloc_dev(hdev, hdev->bus, port1); in hub_port_connect()
5426 dev_err(&port_dev->dev, in hub_port_connect()
5428 mutex_unlock(hcd->address0_mutex); in hub_port_connect()
5434 udev->bus_mA = hub->mA_per_port; in hub_port_connect()
5435 udev->level = hdev->level + 1; in hub_port_connect()
5438 if (hub_is_superspeed(hub->hdev)) in hub_port_connect()
5439 udev->speed = USB_SPEED_SUPER; in hub_port_connect()
5441 udev->speed = USB_SPEED_UNKNOWN; in hub_port_connect()
5444 if (udev->devnum <= 0) { in hub_port_connect()
5445 status = -ENOTCONN; /* Don't retry */ in hub_port_connect()
5449 /* reset (non-USB 3.0 devices) and get descriptor */ in hub_port_connect()
5454 mutex_unlock(hcd->address0_mutex); in hub_port_connect()
5458 if (udev->quirks & USB_QUIRK_DELAY_INIT) in hub_port_connect()
5461 /* consecutive bus-powered hubs aren't reliable; they can in hub_port_connect()
5464 * (without reading syslog), even without per-port LEDs in hub_port_connect()
5467 if (udev->descriptor.bDeviceClass == USB_CLASS_HUB in hub_port_connect()
5468 && udev->bus_mA <= unit_load) { in hub_port_connect()
5474 dev_dbg(&udev->dev, "get status %d ?\n", status); in hub_port_connect()
5478 dev_err(&udev->dev, in hub_port_connect()
5479 "can't connect bus-powered hub " in hub_port_connect()
5481 if (hub->has_indicators) { in hub_port_connect()
5482 hub->indicator[port1-1] = in hub_port_connect()
5486 &hub->leds, 0); in hub_port_connect()
5488 status = -ENOTCONN; /* Don't retry */ in hub_port_connect()
5494 if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0200 in hub_port_connect()
5495 && udev->speed == USB_SPEED_FULL in hub_port_connect()
5512 if (hdev->state == USB_STATE_NOTATTACHED) in hub_port_connect()
5513 status = -ENOTCONN; in hub_port_connect()
5515 port_dev->child = udev; in hub_port_connect()
5525 port_dev->child = NULL; in hub_port_connect()
5529 if (hcd->usb_phy && !hdev->parent) in hub_port_connect()
5530 usb_phy_notify_connect(hcd->usb_phy, in hub_port_connect()
5531 udev->speed); in hub_port_connect()
5540 dev_dbg(hub->intfdev, "%dmA power budget left\n", status); in hub_port_connect()
5551 mutex_unlock(hcd->address0_mutex); in hub_port_connect()
5555 if ((status == -ENOTCONN) || (status == -ENOTSUPP)) in hub_port_connect()
5558 /* When halfway through our retry count, power-cycle the port */ in hub_port_connect()
5559 if (i == (PORT_INIT_TRIES - 1) / 2) { in hub_port_connect()
5560 dev_info(&port_dev->dev, "attempt power cycle\n"); in hub_port_connect()
5567 if (hub->hdev->parent || in hub_port_connect()
5568 !hcd->driver->port_handed_over || in hub_port_connect()
5569 !(hcd->driver->port_handed_over)(hcd, port1)) { in hub_port_connect()
5570 if (status != -ENOTCONN && status != -ENODEV) in hub_port_connect()
5571 dev_err(&port_dev->dev, in hub_port_connect()
5577 if (hcd->driver->relinquish_port && !hub->hdev->parent) { in hub_port_connect()
5578 if (status != -ENOTCONN && status != -ENODEV) in hub_port_connect()
5579 hcd->driver->relinquish_port(hcd, port1); in hub_port_connect()
5585 * a port connection-change occurs;
5586 * a port enable-change occurs (often caused by EMI);
5593 __must_hold(&port_dev->status_lock) in hub_port_connect_change()
5595 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_connect_change()
5596 struct usb_device *udev = port_dev->child; in hub_port_connect_change()
5598 int status = -ENODEV; in hub_port_connect_change()
5600 dev_dbg(&port_dev->dev, "status %04x, change %04x, %s\n", portstatus, in hub_port_connect_change()
5603 if (hub->has_indicators) { in hub_port_connect_change()
5605 hub->indicator[port1-1] = INDICATOR_AUTO; in hub_port_connect_change()
5610 if (hub->hdev->bus->is_b_host) in hub_port_connect_change()
5617 udev->state != USB_STATE_NOTATTACHED) { in hub_port_connect_change()
5620 * USB-3 connections are initialized automatically by in hub_port_connect_change()
5627 dev_dbg(&udev->dev, in hub_port_connect_change()
5632 udev->bos)) { in hub_port_connect_change()
5633 dev_dbg(&udev->dev, in hub_port_connect_change()
5641 } else if (udev->state == USB_STATE_SUSPENDED && in hub_port_connect_change()
5642 udev->persist_enabled) { in hub_port_connect_change()
5654 clear_bit(port1, hub->change_bits); in hub_port_connect_change()
5665 /* Handle notifying userspace about hub over-current events */
5672 sysfs_notify(&port_dev->dev.kobj, NULL, "over_current_count"); in port_over_current_notify()
5674 hub_dev = port_dev->dev.parent; in port_over_current_notify()
5679 port_dev_path = kobject_get_path(&port_dev->dev.kobj, GFP_KERNEL); in port_over_current_notify()
5688 port_dev->over_current_count); in port_over_current_notify()
5692 kobject_uevent_env(&hub_dev->kobj, KOBJ_CHANGE, envp); in port_over_current_notify()
5701 __must_hold(&port_dev->status_lock) in port_event()
5704 struct usb_port *port_dev = hub->ports[port1 - 1]; in port_event()
5705 struct usb_device *udev = port_dev->child; in port_event()
5706 struct usb_device *hdev = hub->hdev; in port_event()
5710 connect_change = test_bit(port1, hub->change_bits); in port_event()
5711 clear_bit(port1, hub->event_bits); in port_event()
5712 clear_bit(port1, hub->wakeup_bits); in port_event()
5724 dev_dbg(&port_dev->dev, "enable change, status %08x\n", in port_event()
5735 dev_err(&port_dev->dev, "disabled by hub (EMI?), re-enabling...\n"); in port_event()
5742 port_dev->over_current_count++; in port_event()
5745 dev_dbg(&port_dev->dev, "over-current change #%u\n", in port_event()
5746 port_dev->over_current_count); in port_event()
5753 dev_err(&port_dev->dev, "over-current condition\n"); in port_event()
5757 dev_dbg(&port_dev->dev, "reset change\n"); in port_event()
5762 dev_dbg(&port_dev->dev, "warm reset change\n"); in port_event()
5767 dev_dbg(&port_dev->dev, "link state change\n"); in port_event()
5772 dev_warn(&port_dev->dev, "config error\n"); in port_event()
5778 if (!pm_runtime_active(&port_dev->dev)) in port_event()
5782 if (port_dev->ignore_event && port_dev->early_stop) in port_event()
5800 dev_dbg(&port_dev->dev, "Wait for inactive link disconnect detect\n"); in port_event()
5803 || udev->state == USB_STATE_NOTATTACHED) { in port_event()
5804 dev_dbg(&port_dev->dev, "do warm reset, port only\n"); in port_event()
5809 dev_dbg(&port_dev->dev, "do warm reset, full device\n"); in port_event()
5835 hdev = hub->hdev; in hub_event()
5836 hub_dev = hub->intfdev; in hub_event()
5839 kcov_remote_start_usb((u64)hdev->bus->busnum); in hub_event()
5842 hdev->state, hdev->maxchild, in hub_event()
5844 (u16) hub->change_bits[0], in hub_event()
5845 (u16) hub->event_bits[0]); in hub_event()
5850 if (unlikely(hub->disconnected)) in hub_event()
5854 if (hdev->state == USB_STATE_NOTATTACHED) { in hub_event()
5855 hub->error = -ENODEV; in hub_event()
5868 if (hub->quiescing) in hub_event()
5871 if (hub->error) { in hub_event()
5872 dev_dbg(hub_dev, "resetting for error %d\n", hub->error); in hub_event()
5880 hub->nerrors = 0; in hub_event()
5881 hub->error = 0; in hub_event()
5885 for (i = 1; i <= hdev->maxchild; i++) { in hub_event()
5886 struct usb_port *port_dev = hub->ports[i - 1]; in hub_event()
5888 if (test_bit(i, hub->event_bits) in hub_event()
5889 || test_bit(i, hub->change_bits) in hub_event()
5890 || test_bit(i, hub->wakeup_bits)) { in hub_event()
5897 * (powered-off), we leave it in that state, run in hub_event()
5900 pm_runtime_get_noresume(&port_dev->dev); in hub_event()
5901 pm_runtime_barrier(&port_dev->dev); in hub_event()
5905 pm_runtime_put_sync(&port_dev->dev); in hub_event()
5910 if (test_and_clear_bit(0, hub->event_bits) == 0) in hub_event()
5920 hub->limited_power = 1; in hub_event()
5922 hub->limited_power = 0; in hub_event()
5928 dev_dbg(hub_dev, "over-current change\n"); in hub_event()
5934 dev_err(hub_dev, "over-current condition\n"); in hub_event()
6022 return -1; in usb_hub_init()
6027 * USB-PERSIST port handover. Otherwise it might see that a full-speed in usb_hub_init()
6029 * over to the companion full-speed controller. in usb_hub_init()
6039 return -1; in usb_hub_init()
6051 * individual hub resources. -greg in usb_hub_cleanup()
6057 * usb_reset_and_verify_device - perform a USB port reset to reinitialize a device
6060 * WARNING - don't use this routine to reset a composite device
6069 * re-connected. All drivers will be unbound, and the device will be
6070 * re-enumerated and probed all over again.
6072 * Return: 0 if the reset succeeded, -ENODEV if the device has been
6092 struct usb_device *parent_hdev = udev->parent; in usb_reset_and_verify_device()
6094 struct usb_hcd *hcd = bus_to_hcd(udev->bus); in usb_reset_and_verify_device()
6098 int port1 = udev->portnum; in usb_reset_and_verify_device()
6100 if (udev->state == USB_STATE_NOTATTACHED || in usb_reset_and_verify_device()
6101 udev->state == USB_STATE_SUSPENDED) { in usb_reset_and_verify_device()
6102 dev_dbg(&udev->dev, "device reset not allowed in state %d\n", in usb_reset_and_verify_device()
6103 udev->state); in usb_reset_and_verify_device()
6104 return -EINVAL; in usb_reset_and_verify_device()
6108 return -EISDIR; in usb_reset_and_verify_device()
6113 * It will be re-enabled by the enumeration process. in usb_reset_and_verify_device()
6117 bos = udev->bos; in usb_reset_and_verify_device()
6118 udev->bos = NULL; in usb_reset_and_verify_device()
6120 mutex_lock(hcd->address0_mutex); in usb_reset_and_verify_device()
6124 ret = -ENODEV; in usb_reset_and_verify_device()
6129 * Other endpoints will be handled by re-enumeration. */ in usb_reset_and_verify_device()
6132 if (ret >= 0 || ret == -ENOTCONN || ret == -ENODEV) in usb_reset_and_verify_device()
6135 mutex_unlock(hcd->address0_mutex); in usb_reset_and_verify_device()
6142 dev_info(&udev->dev, "device firmware changed\n"); in usb_reset_and_verify_device()
6147 if (!udev->actconfig) in usb_reset_and_verify_device()
6150 mutex_lock(hcd->bandwidth_mutex); in usb_reset_and_verify_device()
6151 ret = usb_hcd_alloc_bandwidth(udev, udev->actconfig, NULL, NULL); in usb_reset_and_verify_device()
6153 dev_warn(&udev->dev, in usb_reset_and_verify_device()
6156 mutex_unlock(hcd->bandwidth_mutex); in usb_reset_and_verify_device()
6161 udev->actconfig->desc.bConfigurationValue, 0, in usb_reset_and_verify_device()
6164 dev_err(&udev->dev, in usb_reset_and_verify_device()
6166 udev->actconfig->desc.bConfigurationValue, ret); in usb_reset_and_verify_device()
6167 mutex_unlock(hcd->bandwidth_mutex); in usb_reset_and_verify_device()
6170 mutex_unlock(hcd->bandwidth_mutex); in usb_reset_and_verify_device()
6174 * Don't bother to send the Set-Interface request for interfaces in usb_reset_and_verify_device()
6176 * many devices can't handle it. Instead just reset the host-side in usb_reset_and_verify_device()
6179 for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) { in usb_reset_and_verify_device()
6180 struct usb_host_config *config = udev->actconfig; in usb_reset_and_verify_device()
6181 struct usb_interface *intf = config->interface[i]; in usb_reset_and_verify_device()
6184 desc = &intf->cur_altsetting->desc; in usb_reset_and_verify_device()
6185 if (desc->bAlternateSetting == 0) { in usb_reset_and_verify_device()
6194 intf->resetting_device = 1; in usb_reset_and_verify_device()
6195 ret = usb_set_interface(udev, desc->bInterfaceNumber, in usb_reset_and_verify_device()
6196 desc->bAlternateSetting); in usb_reset_and_verify_device()
6197 intf->resetting_device = 0; in usb_reset_and_verify_device()
6200 dev_err(&udev->dev, "failed to restore interface %d " in usb_reset_and_verify_device()
6202 desc->bInterfaceNumber, in usb_reset_and_verify_device()
6203 desc->bAlternateSetting, in usb_reset_and_verify_device()
6208 for (j = 0; j < intf->cur_altsetting->desc.bNumEndpoints; j++) in usb_reset_and_verify_device()
6209 intf->cur_altsetting->endpoint[j].streams = 0; in usb_reset_and_verify_device()
6213 /* Now that the alt settings are re-installed, enable LTM and LPM. */ in usb_reset_and_verify_device()
6218 udev->bos = bos; in usb_reset_and_verify_device()
6223 udev->bos = bos; in usb_reset_and_verify_device()
6225 return -ENODEV; in usb_reset_and_verify_device()
6229 * usb_reset_device - warn interface drivers and perform a USB port reset
6239 * being unbound or re-bound during the ongoing reset its disconnect()
6241 * routine returns -EINPROGRESS.
6260 struct usb_host_config *config = udev->actconfig; in usb_reset_device()
6261 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_reset_device()
6263 if (udev->state == USB_STATE_NOTATTACHED) { in usb_reset_device()
6264 dev_dbg(&udev->dev, "device reset not allowed in state %d\n", in usb_reset_device()
6265 udev->state); in usb_reset_device()
6266 return -EINVAL; in usb_reset_device()
6269 if (!udev->parent) { in usb_reset_device()
6270 /* this requires hcd-specific logic; see ohci_restart() */ in usb_reset_device()
6271 dev_dbg(&udev->dev, "%s for root hub!\n", __func__); in usb_reset_device()
6272 return -EISDIR; in usb_reset_device()
6275 if (udev->reset_in_progress) in usb_reset_device()
6276 return -EINPROGRESS; in usb_reset_device()
6277 udev->reset_in_progress = 1; in usb_reset_device()
6279 port_dev = hub->ports[udev->portnum - 1]; in usb_reset_device()
6296 for (i = 0; i < config->desc.bNumInterfaces; ++i) { in usb_reset_device()
6297 struct usb_interface *cintf = config->interface[i]; in usb_reset_device()
6301 if (cintf->dev.driver) { in usb_reset_device()
6302 drv = to_usb_driver(cintf->dev.driver); in usb_reset_device()
6303 if (drv->pre_reset && drv->post_reset) in usb_reset_device()
6304 unbind = (drv->pre_reset)(cintf); in usb_reset_device()
6305 else if (cintf->condition == in usb_reset_device()
6319 for (i = config->desc.bNumInterfaces - 1; i >= 0; --i) { in usb_reset_device()
6320 struct usb_interface *cintf = config->interface[i]; in usb_reset_device()
6322 int rebind = cintf->needs_binding; in usb_reset_device()
6324 if (!rebind && cintf->dev.driver) { in usb_reset_device()
6325 drv = to_usb_driver(cintf->dev.driver); in usb_reset_device()
6326 if (drv->post_reset) in usb_reset_device()
6327 rebind = (drv->post_reset)(cintf); in usb_reset_device()
6328 else if (cintf->condition == in usb_reset_device()
6332 cintf->needs_binding = 1; in usb_reset_device()
6343 udev->reset_in_progress = 0; in usb_reset_device()
6350 * usb_queue_reset_device - Reset a USB device from an atomic context
6363 * - Scheduling two resets at the same time from two different drivers
6366 * handles ->pre_reset(), the second reset might happen or not.
6368 * - If the reset is delayed so long that the interface is unbound from
6371 * - This function can be called during .probe(). It can also be called
6374 * .disconnect(), call usb_reset_device() directly -- but watch out
6379 if (schedule_work(&iface->reset_ws)) in usb_queue_reset_device()
6385 * usb_hub_find_child - Get the pointer of child device
6395 * child's usb_device pointer if non-NULL.
6402 if (port1 < 1 || port1 > hdev->maxchild) in usb_hub_find_child()
6404 return hub->ports[port1 - 1]->child; in usb_hub_find_child()
6419 for (i = 1; i <= hdev->maxchild; i++) { in usb_hub_adjust_deviceremovable()
6420 struct usb_port *port_dev = hub->ports[i - 1]; in usb_hub_adjust_deviceremovable()
6422 connect_type = port_dev->connect_type; in usb_hub_adjust_deviceremovable()
6426 if (!(desc->u.hs.DeviceRemovable[i/8] & mask)) { in usb_hub_adjust_deviceremovable()
6427 … dev_dbg(&port_dev->dev, "DeviceRemovable is changed to 1 according to platform information.\n"); in usb_hub_adjust_deviceremovable()
6428 desc->u.hs.DeviceRemovable[i/8] |= mask; in usb_hub_adjust_deviceremovable()
6433 u16 port_removable = le16_to_cpu(desc->u.ss.DeviceRemovable); in usb_hub_adjust_deviceremovable()
6435 for (i = 1; i <= hdev->maxchild; i++) { in usb_hub_adjust_deviceremovable()
6436 struct usb_port *port_dev = hub->ports[i - 1]; in usb_hub_adjust_deviceremovable()
6438 connect_type = port_dev->connect_type; in usb_hub_adjust_deviceremovable()
6443 … dev_dbg(&port_dev->dev, "DeviceRemovable is changed to 1 according to platform information.\n"); in usb_hub_adjust_deviceremovable()
6449 desc->u.ss.DeviceRemovable = cpu_to_le16(port_removable); in usb_hub_adjust_deviceremovable()
6455 * usb_get_hub_port_acpi_handle - Get the usb port's acpi handle
6470 return ACPI_HANDLE(&hub->ports[port1 - 1]->dev); in usb_get_hub_port_acpi_handle()