Lines Matching full:hub
3 * USB hub driver.
39 #include "hub.h"
75 /* workqueue to process hub events */
79 /* synchronize hub-port add/remove and peering operations */
107 * hub driver's behavior. On the first initialization attempt, if the
134 static int hub_port_disable(struct usb_hub *hub, int port1, int set_state);
135 static bool hub_port_warm_reset_required(struct usb_hub *hub, int port1,
138 static inline char *portspeed(struct usb_hub *hub, int portstatus) in portspeed() argument
140 if (hub_is_superspeedplus(hub->hdev)) in portspeed()
142 if (hub_is_superspeed(hub->hdev)) in portspeed()
213 struct usb_hub *hub, in usb_set_lpm_mel() argument
223 * and the hub header decode latency. See USB 3.1 section C 2.2.1 in usb_set_lpm_mel()
228 hub->descriptor->u.ss.bHubHdrDecLat * 100; in usb_set_lpm_mel()
232 * each link + wHubDelay for each hub. Add only for last link. 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()
260 struct usb_hub *hub, in usb_set_lpm_pel() argument
270 * device and the parent hub into U0. The exit latency is the bigger of in usb_set_lpm_pel()
271 * the device exit latency or the hub exit latency. in usb_set_lpm_pel()
279 * When the hub starts to receive the LFPS, there is a slight delay for in usb_set_lpm_pel()
282 * delay, plus the PEL that we calculated for this hub. in usb_set_lpm_pel()
336 struct usb_hub *hub; in usb_set_lpm_parameters() local
350 hub = usb_hub_to_struct_hub(udev->parent); in usb_set_lpm_parameters()
354 if (!hub) in usb_set_lpm_parameters()
363 hub, &udev->parent->u1_params, hub_u1_del); in usb_set_lpm_parameters()
366 hub, &udev->parent->u2_params, hub_u2_del); in usb_set_lpm_parameters()
370 * when the parent hub notices the downstream port is trying to in usb_set_lpm_parameters()
371 * transition to U0 to when the hub initiates a U0 transition on its in usb_set_lpm_parameters()
375 * The hub chapter, sections 10.4.2.4 and 10.4.2.5 seem to be talking in usb_set_lpm_parameters()
379 * assume the device exit latencies they are talking about are the hub in usb_set_lpm_parameters()
388 hub, &udev->parent->u1_params, hub_u1_del, in usb_set_lpm_parameters()
397 hub, &udev->parent->u2_params, hub_u2_del, in usb_set_lpm_parameters()
488 static void set_port_led(struct usb_hub *hub, int port1, int selector) in set_port_led() argument
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()
503 struct usb_hub *hub = in led_work() local
505 struct usb_device *hdev = hub->hdev; in led_work()
510 if (hdev->state != USB_STATE_CONFIGURED || hub->quiescing) in led_work()
518 switch (hub->indicator[i]) { in led_work()
557 set_port_led(hub, i + 1, selector); in led_work()
558 hub->indicator[i] = mode; in led_work()
563 set_port_led(hub, cursor + 1, HUB_LED_GREEN); in led_work()
564 hub->indicator[cursor] = INDICATOR_CYCLE; in led_work()
569 &hub->leds, LED_CYCLE_PERIOD); in led_work()
572 /* use a short timeout for hub/port status fetches */
611 static int hub_ext_port_status(struct usb_hub *hub, int port1, int type, in hub_ext_port_status() argument
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()
624 dev_err(hub->intfdev, 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()
668 int usb_hub_port_status(struct usb_hub *hub, int port1, in usb_hub_port_status() argument
671 return hub_ext_port_status(hub, port1, HUB_PORT_STATUS, in usb_hub_port_status()
675 static void hub_resubmit_irq_urb(struct usb_hub *hub) in hub_resubmit_irq_urb() argument
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()
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()
699 struct usb_hub *hub = from_timer(hub, t, irq_urb_retry); in hub_retry_irq_urb() local
701 hub_resubmit_irq_urb(hub); in hub_retry_irq_urb()
705 static void kick_hub_wq(struct usb_hub *hub) in kick_hub_wq() argument
709 if (hub->disconnected || work_pending(&hub->events)) in kick_hub_wq()
717 * work for this hub. Therefore put the interface either when in kick_hub_wq()
720 intf = to_usb_interface(hub->intfdev); in kick_hub_wq()
722 hub_get(hub); in kick_hub_wq()
724 if (queue_work(hub_wq, &hub->events)) in kick_hub_wq()
729 hub_put(hub); in kick_hub_wq()
734 struct usb_hub *hub = usb_hub_to_struct_hub(hdev); in usb_kick_hub_wq() local
736 if (hub) in usb_kick_hub_wq()
737 kick_hub_wq(hub); in usb_kick_hub_wq()
746 * resume through the normal hub interrupt URB.
751 struct usb_hub *hub; in usb_wakeup_notification() local
757 hub = usb_hub_to_struct_hub(hdev); in usb_wakeup_notification()
758 if (hub) { in usb_wakeup_notification()
759 port_dev = hub->ports[portnum - 1]; in usb_wakeup_notification()
763 set_bit(portnum, hub->wakeup_bits); in usb_wakeup_notification()
764 kick_hub_wq(hub); in usb_wakeup_notification()
772 struct usb_hub *hub = urb->context; in hub_irq() local
784 /* Cause a hub reset after 10 consecutive errors */ 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()
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()
804 kick_hub_wq(hub); in hub_irq()
807 hub_resubmit_irq_urb(hub); in hub_irq()
832 * both can talk to the same hub concurrently.
836 struct usb_hub *hub = in hub_tt_work() local
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()
853 spin_unlock_irqrestore(&hub->tt.lock, flags); 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
873 * @hdev: USB device belonging to the usb hub
874 * @hub: target hub
883 int usb_hub_set_port_power(struct usb_device *hdev, struct usb_hub *hub, in usb_hub_set_port_power() argument
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
907 * High speed HCDs use this to tell the hub driver that some split control or
912 * It may not be possible for that hub to handle additional full (or low)
927 * there can be many TTs per hub). even if they're uncommon. in usb_hub_clear_tt_buffer()
959 static void hub_power_on(struct usb_hub *hub, bool do_delay) in hub_power_on() argument
967 * unless we send these messages to the hub. in hub_power_on()
969 if (hub_is_port_power_switchable(hub)) 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()
981 msleep(hub_power_on_good_delay(hub)); in hub_power_on()
984 static int hub_hub_status(struct usb_hub *hub, in hub_hub_status() argument
989 mutex_lock(&hub->status_mutex); in hub_hub_status()
990 ret = get_hub_status(hub->hdev, &hub->status->hub); 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()
1004 static int hub_set_port_link_state(struct usb_hub *hub, int port1, in hub_set_port_link_state() argument
1007 return set_port_feature(hub->hdev, in hub_set_port_link_state()
1017 static void hub_port_logical_disconnect(struct usb_hub *hub, int port1) in hub_port_logical_disconnect() argument
1019 dev_dbg(&hub->ports[port1 - 1]->dev, "logical disconnect\n"); in hub_port_logical_disconnect()
1020 hub_port_disable(hub, port1, 1); 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()
1032 kick_hub_wq(hub); in hub_port_logical_disconnect()
1036 * usb_remove_device - disable a device's port on its parent hub
1049 struct usb_hub *hub; in usb_remove_device() local
1053 if (!udev->parent) /* Can't remove a root hub */ 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()
1076 static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) in hub_activate() argument
1078 struct usb_device *hdev = hub->hdev; in hub_activate()
1090 /* Was the hub disconnected while we were waiting? */ in hub_activate()
1091 if (hub->disconnected) in hub_activate()
1097 hub_get(hub); in hub_activate()
1099 /* The superspeed hub except for root hub has to use Hub Depth in hub_activate()
1101 * it uses to determine the downstream port number. So hub driver in hub_activate()
1102 * should send a set hub depth request to superspeed hub after in hub_activate()
1103 * the superspeed hub is set configuration in initialization or in hub_activate()
1116 dev_err(hub->intfdev, in hub_activate()
1117 "set hub depth failed\n"); in hub_activate()
1121 * hub's initial power-up delays. This is pretty awkward in hub_activate()
1124 * root hub (assuming usbcore is compiled into the kernel in hub_activate()
1133 delay = hub_power_on_good_delay(hub); in hub_activate()
1135 hub_power_on(hub, false); 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()
1146 /* The internal host controller state for the hub device in hub_activate()
1148 * Update the device's info so the HW knows it's a hub. in hub_activate()
1153 &hub->tt, GFP_NOIO); in hub_activate()
1155 dev_err(hub->intfdev, in hub_activate()
1156 "Host not accepting hub info update\n"); in hub_activate()
1157 dev_err(hub->intfdev, in hub_activate()
1158 "LS/FS devices and hubs may not work under this hub\n"); in hub_activate()
1161 hub_power_on(hub, true); in hub_activate()
1163 hub_power_on(hub, true); 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()
1176 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_activate()
1181 status = usb_hub_port_status(hub, port1, &portstatus, &portchange); in hub_activate()
1214 hub_port_warm_reset_required(hub, port1, portstatus)) in hub_activate()
1215 set_bit(port1, hub->event_bits); 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()
1267 set_bit(port1, hub->change_bits); in hub_activate()
1281 if (portchange || (hub_is_superspeed(hub->hdev) && in hub_activate()
1283 set_bit(port1, hub->event_bits); 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()
1315 INIT_DELAYED_WORK(&hub->init_work, hub_init_func3); in hub_activate()
1317 &hub->init_work, 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()
1336 kick_hub_wq(hub); in hub_activate()
1341 usb_autopm_put_interface_async(to_usb_interface(hub->intfdev)); in hub_activate()
1345 hub_put(hub); in hub_activate()
1351 struct usb_hub *hub = container_of(ws, struct usb_hub, init_work.work); in hub_init_func2() local
1353 hub_activate(hub, HUB_INIT2); in hub_init_func2()
1358 struct usb_hub *hub = container_of(ws, struct usb_hub, init_work.work); in hub_init_func3() local
1360 hub_activate(hub, HUB_INIT3); in hub_init_func3()
1367 static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type) in hub_quiesce() argument
1369 struct usb_device *hdev = hub->hdev; 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()
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()
1395 static void hub_pm_barrier_for_all_ports(struct usb_hub *hub) in hub_pm_barrier_for_all_ports() argument
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()
1403 /* caller has locked the hub device */
1406 struct usb_hub *hub = usb_get_intfdata(intf); in hub_pre_reset() local
1408 hub_quiesce(hub, HUB_PRE_RESET); in hub_pre_reset()
1409 hub->in_reset = 1; in hub_pre_reset()
1410 hub_pm_barrier_for_all_ports(hub); in hub_pre_reset()
1414 /* caller has locked the hub device */
1417 struct usb_hub *hub = usb_get_intfdata(intf); in hub_post_reset() local
1419 hub->in_reset = 0; in hub_post_reset()
1420 hub_pm_barrier_for_all_ports(hub); in hub_post_reset()
1421 hub_activate(hub, HUB_POST_RESET); in hub_post_reset()
1425 static int hub_configure(struct usb_hub *hub, in hub_configure() argument
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()
1446 hub->status = kmalloc(sizeof(*hub->status), GFP_KERNEL); in hub_configure()
1447 if (!hub->status) { 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()
1459 /* Request the entire hub descriptor. 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()
1465 message = "can't read hub descriptor"; in hub_configure()
1473 if (hub->descriptor->bNbrPorts > maxchild) { in hub_configure()
1474 message = "hub has too many ports!"; in hub_configure()
1477 } else if (hub->descriptor->bNbrPorts == 0) { in hub_configure()
1478 message = "hub doesn't have any ports!"; in hub_configure()
1484 * Accumulate wHubDelay + 40ns for every hub in the tree of devices. in hub_configure()
1488 u32 delay = __le16_to_cpu(hub->descriptor->u.ss.wHubDelay); 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()
1507 wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); in hub_configure()
1522 portstr[i] = hub->descriptor->u.hs.DeviceRemovable in hub_configure()
1528 dev_dbg(hub_dev, "standalone hub\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()
1564 hub->tt.hub = hdev; in hub_configure()
1570 hub->tt.multi = 1; in hub_configure()
1574 hub->tt.hub = hdev; in hub_configure()
1580 dev_dbg(hub_dev, "Unrecognized hub protocol %d\n", 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()
1629 message = "can't get hub status"; 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()
1646 hub->descriptor->bHubContrCurrent; in hub_configure()
1648 dev_dbg(hub_dev, "hub controller current requirement: %dmA\n", 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()
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()
1667 ret = hub_hub_status(hub, &hubstatus, &hubchange); in hub_configure()
1669 message = "can't get hub status"; 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()
1701 usb_fill_int_urb(hub->urb, hdev, pipe, *hub->buffer, maxp, hub_irq, in hub_configure()
1702 hub, endpoint->bInterval); in hub_configure()
1704 /* maybe cycle the hub leds */ in hub_configure()
1705 if (hub->has_indicators && blinkenlights) in hub_configure()
1706 hub->indicator[0] = INDICATOR_CYCLE; in hub_configure()
1710 ret = usb_hub_create_port_device(hub, i + 1); in hub_configure()
1712 dev_err(hub->intfdev, in hub_configure()
1719 struct usb_port *port_dev = hub->ports[i]; in hub_configure()
1728 /* Update the HCD's internal representation of this hub before hub_wq in hub_configure()
1729 * starts getting port status changes for devices under the hub. in hub_configure()
1733 &hub->tt, GFP_KERNEL); in hub_configure()
1735 message = "can't update HCD hub info"; in hub_configure()
1740 usb_hub_adjust_deviceremovable(hdev, hub->descriptor); in hub_configure()
1742 hub_activate(hub, HUB_INIT); in hub_configure()
1754 struct usb_hub *hub = container_of(kref, struct usb_hub, kref); in hub_release() local
1756 usb_put_dev(hub->hdev); in hub_release()
1757 usb_put_intf(to_usb_interface(hub->intfdev)); in hub_release()
1758 kfree(hub); in hub_release()
1761 void hub_get(struct usb_hub *hub) in hub_get() argument
1763 kref_get(&hub->kref); in hub_get()
1766 void hub_put(struct usb_hub *hub) in hub_put() argument
1768 kref_put(&hub->kref, hub_release); in hub_put()
1775 struct usb_hub *hub = usb_get_intfdata(intf); in hub_disconnect() local
1780 * Stop adding new hub events. We do not want to block here and thus in hub_disconnect()
1783 hub->disconnected = 1; in hub_disconnect()
1785 /* Disconnect all children and quiesce the hub */ in hub_disconnect()
1786 hub->error = 0; in hub_disconnect()
1787 hub_quiesce(hub, HUB_DISCONNECT); in hub_disconnect()
1799 usb_hub_remove_port_device(hub, port1); in hub_disconnect()
1803 if (hub->hdev->speed == USB_SPEED_HIGH) 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()
1814 if (hub->quirk_disable_autosuspend) in hub_disconnect()
1817 onboard_dev_destroy_pdevs(&hub->onboard_devs); in hub_disconnect()
1819 hub_put(hub); in hub_disconnect()
1830 /* Multiple endpoints? What kind of mutant ninja-hub is this? */ in hub_descriptor_is_sane()
1845 struct usb_hub *hub; in hub_probe() local
1854 * - Unlike other drivers, the hub driver does not rely on the in hub_probe()
1857 * change on hub downstream ports, so it is safe to do it. in hub_probe()
1860 * below very rare devices when they are plugged into hub in hub_probe()
1871 * autosuspend delay of their parent hub in the probe() to one in hub_probe()
1876 * hub during running 'lsusb', but it is probably too in hub_probe()
1879 * - Change autosuspend delay of hub can avoid unnecessary auto in hub_probe()
1880 * suspend timer for hub, also may decrease power consumption in hub_probe()
1898 } else { /* root hub */ in hub_probe()
1907 "Unsupported bus topology: hub nested too deep\n"); in hub_probe()
1913 dev_warn(&intf->dev, "ignoring external hub\n"); in hub_probe()
1919 dev_err(&intf->dev, "bad descriptor, ignoring hub\n"); in hub_probe()
1923 /* We found a hub */ in hub_probe()
1924 dev_info(&intf->dev, "USB hub found\n"); in hub_probe()
1926 hub = kzalloc(sizeof(*hub), GFP_KERNEL); in hub_probe()
1927 if (!hub) 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()
1942 usb_set_intfdata(intf, hub); in hub_probe()
1950 hub->quirk_check_port_auto_suspend = 1; in hub_probe()
1953 hub->quirk_disable_autosuspend = 1; 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()
1979 struct usb_hub *hub = usb_hub_to_struct_hub(hdev); in hub_ioctl() local
1981 /* assert ifno == 0 (part of hub spec) */ in hub_ioctl()
1993 if (hub->ports[i]->child == NULL) in hub_ioctl()
1997 hub->ports[i]->child->devnum; in hub_ioctl()
2011 * Allow user programs to claim ports on a hub. When a device is attached
2017 struct usb_hub *hub = usb_hub_to_struct_hub(hdev); in find_port_owner() local
2024 /* Devices not managed by the hub driver in find_port_owner()
2027 *ppowner = &(hub->ports[port1 - 1]->port_owner); in find_port_owner()
2066 struct usb_hub *hub = usb_hub_to_struct_hub(hdev); in usb_hub_release_all_ports() local
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()
2079 struct usb_hub *hub; in usb_device_is_owned() local
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()
2089 struct usb_hub *hub; in update_port_device_state() local
2093 hub = usb_hub_to_struct_hub(udev->parent); in update_port_device_state()
2097 * has a test step to unbind the hub before running the in update_port_device_state()
2099 * which will set the hub's maxchild to 0, further in update_port_device_state()
2102 if (hub) { in update_port_device_state()
2103 port_dev = hub->ports[udev->portnum - 1]; in update_port_device_state()
2112 struct usb_hub *hub = usb_hub_to_struct_hub(udev); in recursively_mark_NOTATTACHED() local
2116 if (hub->ports[i]->child) in recursively_mark_NOTATTACHED()
2117 recursively_mark_NOTATTACHED(hub->ports[i]->child); in recursively_mark_NOTATTACHED()
2157 /* root hub wakeup capabilities are managed out-of-band in usb_set_device_state()
2206 /* be safe when more hub events are proceed in parallel */ in choose_devnum()
2247 struct usb_hub *hub = usb_hub_to_struct_hub(udev); in hub_disconnect_children() local
2252 if (hub->ports[i]->child) in hub_disconnect_children()
2253 usb_disconnect(&hub->ports[i]->child); in hub_disconnect_children()
2265 * If *pdev is a normal device then the parent hub must already be locked.
2266 * If *pdev is a root hub then the caller must hold the usb_bus_idr_lock,
2269 * Only hub drivers (including virtual root hub drivers for host
2278 struct usb_hub *hub = NULL; in usb_disconnect() local
2309 hub = usb_hub_to_struct_hub(udev->parent); in usb_disconnect()
2310 port_dev = hub->ports[port1 - 1]; in usb_disconnect()
2319 if (!test_and_set_bit(port1, hub->child_usage_bits)) in usb_disconnect()
2344 if (port_dev && test_and_clear_bit(port1, hub->child_usage_bits)) in usb_disconnect()
2524 struct usb_hub *hub; in set_usb_port_removable() local
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()
2553 * Otherwise, check whether the hub knows whether a port is removable 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()
2584 * the parent hub (if udev is a normal device) or else the
2585 * usb_bus_idr_lock (if udev is a root hub). The parent's pointer to
2591 * Only the hub driver or root-hub registrar should ever call this.
2603 /* Initialize non-root-hub device wakeup to disabled; in usb_new_device()
2644 /* check whether the hub or firmware marks this port as non-removable */ in usb_new_device()
2659 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_new_device() local
2661 struct usb_port *port_dev = hub->ports[port1 - 1]; in usb_new_device()
2675 if (!test_and_set_bit(port1, hub->child_usage_bits)) in usb_new_device()
2761 * @hdev: The hub device
2891 static bool hub_port_warm_reset_required(struct usb_hub *hub, int port1, in hub_port_warm_reset_required() argument
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()
2907 static int hub_port_wait_reset(struct usb_hub *hub, int port1, in hub_port_wait_reset() argument
2922 if (hub_is_superspeedplus(hub->hdev)) in hub_port_wait_reset()
2923 ret = hub_ext_port_status(hub, port1, in hub_port_wait_reset()
2928 ret = usb_hub_port_status(hub, port1, &portstatus, in hub_port_wait_reset()
2948 dev_dbg(&hub->ports[port1 - 1]->dev, in hub_port_wait_reset()
2956 if (hub_port_warm_reset_required(hub, port1, portstatus)) 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()
2980 if (hub_is_superspeedplus(hub->hdev)) { in hub_port_wait_reset()
2984 udev->ssp_rate = get_port_ssp_rate(hub->hdev, ext_portstatus); in hub_port_wait_reset()
2992 else if (hub_is_superspeed(hub->hdev)) in hub_port_wait_reset()
3004 static int hub_port_reset(struct usb_hub *hub, int port1, in hub_port_reset() argument
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()
3027 if (usb_hub_port_status(hub, port1, &portstatus, in hub_port_reset()
3029 if (hub_port_warm_reset_required(hub, port1, 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()
3041 ; /* The hub is gone */ in hub_port_reset()
3047 status = hub_port_wait_reset(hub, port1, udev, delay, in hub_port_reset()
3050 dev_dbg(hub->intfdev, 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()
3080 if (usb_hub_port_status(hub, port1, in hub_port_reset()
3084 if (!hub_port_warm_reset_required(hub, port1, in hub_port_reset()
3115 /* Hub needs extra delay after resetting its port. */ in hub_port_reset()
3116 if (hub->hdev->quirks & USB_QUIRK_HUB_SLOW_RESET) in hub_port_reset()
3139 if (!hub_is_superspeed(hub->hdev)) in hub_port_reset()
3147 * @hub: target hub
3163 static bool hub_port_stop_enumerate(struct usb_hub *hub, int port1, int retries) in hub_port_stop_enumerate() argument
3165 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_stop_enumerate()
3188 int usb_port_is_power_on(struct usb_hub *hub, unsigned int portstatus) in usb_port_is_power_on() argument
3192 if (hub_is_superspeed(hub->hdev)) { in usb_port_is_power_on()
3220 static int port_is_suspended(struct usb_hub *hub, unsigned portstatus) in port_is_suspended() argument
3224 if (hub_is_superspeed(hub->hdev)) { in port_is_suspended()
3240 struct usb_hub *hub, int port1, in check_port_resume_type() argument
3243 struct usb_port *port_dev = hub->ports[port1 - 1]; in check_port_resume_type()
3249 && hub_port_warm_reset_required(hub, port1, portstatus)) { in check_port_resume_type()
3253 else if (status || port_is_suspended(hub, portstatus) || in check_port_resume_type()
3254 !usb_port_is_power_on(hub, portstatus)) { in check_port_resume_type()
3260 status = usb_hub_port_status(hub, port1, &portstatus, 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()
3292 * turned on the port1 bit in hub->change_bits. But after in check_port_resume_type()
3297 clear_bit(port1, hub->change_bits); in check_port_resume_type()
3400 struct usb_hub *hub = usb_hub_to_struct_hub(udev); in usb_wakeup_enabled_descendants() local
3403 (hub ? hub->wakeup_enabled_descendants : 0); in usb_wakeup_enabled_descendants()
3409 * @udev: device that's no longer in active use, not a root hub
3434 * Devices on USB hub ports have only one "suspend" state, corresponding
3443 * Other than re-initializing the hub (plug/unplug, except for root hubs),
3449 * hub is suspended). Nevertheless, we change @udev->state to
3457 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_suspend() local
3458 struct usb_port *port_dev = hub->ports[udev->portnum - 1]; in usb_port_suspend()
3466 * wake up the upstream hub (including maybe the root hub). in usb_port_suspend()
3493 if (hub_is_superspeed(hub->hdev)) in usb_port_suspend()
3494 status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U3); in usb_port_suspend()
3499 * into suspend a few ms after the root hub stops sending packets. in usb_port_suspend()
3508 status = set_port_feature(hub->hdev, port1, in usb_port_suspend()
3523 ret = usb_hub_port_status(hub, port1, &portstatus, in usb_port_suspend()
3529 if (ret == 0 && port_is_suspended(hub, portstatus)) { in usb_port_suspend()
3565 && test_and_clear_bit(port1, hub->child_usage_bits)) in usb_port_suspend()
3568 usb_mark_last_busy(hub->hdev); in usb_port_suspend()
3693 struct usb_hub *hub, int port1, in wait_for_connected() argument
3701 if (!usb_port_is_power_on(hub, *portstatus)) { in wait_for_connected()
3707 status = usb_hub_port_status(hub, port1, portstatus, portchange); in wait_for_connected()
3715 * @udev: device to re-activate, not a root hub
3749 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_resume() local
3750 struct usb_port *port_dev = hub->ports[udev->portnum - 1]; in usb_port_resume()
3755 if (!test_and_set_bit(port1, hub->child_usage_bits)) { in usb_port_resume()
3767 status = usb_hub_port_status(hub, port1, &portstatus, &portchange); in usb_port_resume()
3768 if (status == 0 && !port_is_suspended(hub, portstatus)) { in usb_port_resume()
3775 if (hub_is_superspeed(hub->hdev)) in usb_port_resume()
3776 status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U0); in usb_port_resume()
3778 status = usb_clear_port_feature(hub->hdev, in usb_port_resume()
3792 status = usb_hub_port_status(hub, port1, &portstatus, &portchange); 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()
3813 status = wait_for_connected(udev, hub, port1, &portchange, in usb_port_resume()
3817 hub, port1, status, portchange, portstatus); in usb_port_resume()
3822 hub_port_logical_disconnect(hub, port1); in usb_port_resume()
3854 static int hub_handle_remote_wakeup(struct usb_hub *hub, unsigned int port, in hub_handle_remote_wakeup() argument
3858 struct usb_port *port_dev = hub->ports[port - 1]; in hub_handle_remote_wakeup()
3865 hdev = hub->hdev; in hub_handle_remote_wakeup()
3891 hub_port_disable(hub, port, 1); in hub_handle_remote_wakeup()
3897 static int check_ports_changed(struct usb_hub *hub) in check_ports_changed() argument
3901 for (port1 = 1; port1 <= hub->hdev->maxchild; ++port1) { in check_ports_changed()
3905 status = usb_hub_port_status(hub, port1, &portstatus, &portchange); in check_ports_changed()
3914 struct usb_hub *hub = usb_get_intfdata(intf); in hub_suspend() local
3915 struct usb_device *hdev = hub->hdev; in hub_suspend()
3922 hub->wakeup_enabled_descendants = 0; in hub_suspend()
3924 struct usb_port *port_dev = hub->ports[port1 - 1]; 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()
3939 /* check if there are changes pending on hub ports */ in hub_suspend()
3940 if (check_ports_changed(hub)) { in hub_suspend()
3948 /* Enable hub to send remote wakeup for all ports. */ in hub_suspend()
3962 hub_quiesce(hub, HUB_SUSPEND); in hub_suspend()
3966 /* Report wakeup requests from the ports of a resuming root hub */
3967 static void report_wakeup_requests(struct usb_hub *hub) in report_wakeup_requests() argument
3969 struct usb_device *hdev = hub->hdev; in report_wakeup_requests()
3976 return; /* Not a root hub */ in report_wakeup_requests()
3992 udev = hub->ports[i]->child; in report_wakeup_requests()
4002 struct usb_hub *hub = usb_get_intfdata(intf); in hub_resume() local
4005 hub_activate(hub, HUB_RESUME); in hub_resume()
4013 report_wakeup_requests(hub); in hub_resume()
4019 struct usb_hub *hub = usb_get_intfdata(intf); in hub_reset_resume() local
4022 hub_activate(hub, HUB_RESET_RESUME); in hub_reset_resume()
4027 * usb_root_hub_lost_power - called by HCD if the root hub lost Vbus power
4028 * @rhdev: struct usb_device for the root hub
4030 * The USB host controller driver calls this function when its root hub
4033 * When the hub driver is resumed it will take notice and carry out
4039 dev_notice(&rhdev->dev, "root hub lost power or was reset\n"); in usb_root_hub_lost_power()
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
4276 * hub-initiated U1/U2 will be disabled.
4278 * If we cannot set the parent hub U1/U2 timeout, we attempt to let the xHCI
4323 /* If we can't set the parent hub U1/U2 timeout, 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.
4360 * it won't have an effect on the bus link state because the parent hub will
4390 /* As soon as usb_set_lpm_timeout(0) return 0, hub initiated LPM in usb_disable_link_state()
4391 * is disabled. Hub will disallows link to enter U1/U2 as well, in usb_disable_link_state()
4392 * even device is initiating LPM. Hence LPM is disabled if hub LPM in usb_disable_link_state()
4405 * Disable hub-initiated and device-initiated U1 and U2 entry.
4461 * Attempt to enable device-initiated and hub-initiated U1 and U2 entry. The
4471 struct usb_hub *hub; in usb_enable_lpm() local
4492 hub = usb_hub_to_struct_hub(udev->parent); in usb_enable_lpm()
4493 if (!hub) in usb_enable_lpm()
4496 port_dev = hub->ports[udev->portnum - 1]; in usb_enable_lpm()
4521 static void hub_usb3_port_prepare_disable(struct usb_hub *hub, in hub_usb3_port_prepare_disable() argument
4528 ret = hub_set_port_link_state(hub, port_dev->portnum, in hub_usb3_port_prepare_disable()
4547 static inline void hub_usb3_port_prepare_disable(struct usb_hub *hub, in hub_usb3_port_prepare_disable() argument
4577 static int hub_handle_remote_wakeup(struct usb_hub *hub, unsigned int port, in hub_handle_remote_wakeup() argument
4595 static int hub_port_disable(struct usb_hub *hub, int port1, int set_state) in hub_port_disable() argument
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()
4603 hub_usb3_port_prepare_disable(hub, port_dev); in hub_port_disable()
4604 ret = hub_set_port_link_state(hub, port_dev->portnum, in hub_port_disable()
4627 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_port_disable() local
4629 return hub_port_disable(hub, udev->portnum, 0); in usb_port_disable()
4647 int hub_port_debounce(struct usb_hub *hub, int port1, bool must_be_connected) in hub_port_debounce() argument
4653 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_debounce()
4656 ret = usb_hub_port_status(hub, port1, &portstatus, &portchange); in hub_port_debounce()
4673 usb_clear_port_feature(hub->hdev, port1, in hub_port_debounce()
4706 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in hub_set_address() local
4708 if (hub->hdev->quirks & USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT) in hub_set_address()
4747 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in hub_set_initial_usb2_lpm_policy() local
4753 if (hub) in hub_set_initial_usb2_lpm_policy()
4754 connect_type = hub->ports[udev->portnum - 1]->connect_type; in hub_set_initial_usb2_lpm_policy()
4856 hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1, in hub_port_init() argument
4859 struct usb_device *hdev = hub->hdev; in hub_port_init()
4861 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_init()
4877 /* root hub ports have a slightly longer reset period in hub_port_init()
4893 retval = hub_port_reset(hub, port1, udev, delay, false); 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()
4967 udev->tt = &hub->tt; in hub_port_init()
4987 if (hub_port_stop_enumerate(hub, port1, retries)) { in hub_port_init()
4996 "hub failed to enable device, error %d\n", in hub_port_init()
5010 retval = hub_port_reset(hub, port1, udev, delay, false); in hub_port_init()
5146 * and attached to a superspeed hub port, but the device descriptor in hub_port_init()
5153 hub_port_reset(hub, port1, udev, HUB_BH_RESET_TIME, true); in hub_port_init()
5177 hub_port_disable(hub, port1, 0); in hub_port_init()
5185 check_highspeed(struct usb_hub *hub, struct usb_device *udev, int port1) in check_highspeed() argument
5201 "connect to a high speed hub\n"); in check_highspeed()
5202 /* hub LEDs are probably harder to miss than syslog */ 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()
5213 hub_power_remaining(struct usb_hub *hub) in hub_power_remaining() argument
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()
5224 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_power_remaining()
5246 if (delta > hub->mA_per_port) in hub_power_remaining()
5248 delta, hub->mA_per_port); in hub_power_remaining()
5252 dev_warn(hub->intfdev, "%dmA over power budget!\n", in hub_power_remaining()
5344 static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus, in hub_port_connect() argument
5350 struct usb_device *hdev = hub->hdev; in hub_port_connect()
5352 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_connect()
5369 clear_bit(port1, hub->removed_bits); in hub_port_connect()
5373 status = hub_port_debounce_be_stable(hub, port1); in hub_port_connect()
5390 test_bit(port1, hub->removed_bits)) { in hub_port_connect()
5393 * maybe switch power back on (e.g. root hub was reset) in hub_port_connect()
5396 if (hub_is_port_power_switchable(hub) in hub_port_connect()
5397 && !usb_port_is_power_on(hub, portstatus) in hub_port_connect()
5405 if (hub_is_superspeed(hub->hdev)) in hub_port_connect()
5413 if (hub_port_stop_enumerate(hub, port1, i)) { in hub_port_connect()
5434 udev->bus_mA = hub->mA_per_port; in hub_port_connect()
5438 if (hub_is_superspeed(hub->hdev)) in hub_port_connect()
5450 status = hub_port_init(hub, udev, port1, i, NULL); 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()
5497 check_highspeed(hub, udev, port1); in hub_port_connect()
5507 /* We mustn't add new devices if the parent hub has in hub_port_connect()
5538 status = hub_power_remaining(hub); in hub_port_connect()
5540 dev_dbg(hub->intfdev, "%dmA power budget left\n", status); in hub_port_connect()
5545 hub_port_disable(hub, port1, 1); in hub_port_connect()
5561 usb_hub_set_port_power(hdev, hub, port1, false); in hub_port_connect()
5562 msleep(2 * hub_power_on_good_delay(hub)); in hub_port_connect()
5563 usb_hub_set_port_power(hdev, hub, port1, true); in hub_port_connect()
5564 msleep(hub_power_on_good_delay(hub)); in hub_port_connect()
5567 if (hub->hdev->parent || in hub_port_connect()
5576 hub_port_disable(hub, port1, 1); in hub_port_connect()
5577 if (hcd->driver->relinquish_port && !hub->hdev->parent) { in hub_port_connect()
5589 * caller already locked the hub
5591 static void hub_port_connect_change(struct usb_hub *hub, int port1, in hub_port_connect_change() argument
5595 struct usb_port *port_dev = hub->ports[port1 - 1]; in hub_port_connect_change()
5601 portchange, portspeed(hub, portstatus)); in hub_port_connect_change()
5603 if (hub->has_indicators) { in hub_port_connect_change()
5604 set_port_led(hub, port1, HUB_LED_AUTO); 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()
5654 clear_bit(port1, hub->change_bits); in hub_port_connect_change()
5661 hub_port_connect(hub, port1, portstatus, portchange); in hub_port_connect_change()
5665 /* Handle notifying userspace about hub over-current events */
5700 static void port_event(struct usb_hub *hub, int port1) in port_event() argument
5704 struct usb_port *port_dev = hub->ports[port1 - 1]; 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()
5714 if (usb_hub_port_status(hub, port1, &portstatus, &portchange) < 0) in port_event()
5730 * to be shutdown by the hub, this hack enables them again. in port_event()
5735 dev_err(&port_dev->dev, "disabled by hub (EMI?), re-enabling...\n"); in port_event()
5750 hub_power_on(hub, true); in port_event()
5751 usb_hub_port_status(hub, port1, &status, &unused); in port_event()
5785 if (hub_handle_remote_wakeup(hub, port1, portstatus, portchange)) in port_event()
5794 while (hub_port_warm_reset_required(hub, port1, portstatus)) { in port_event()
5799 usb_hub_port_status(hub, port1, &portstatus, &unused); in port_event()
5805 if (hub_port_reset(hub, port1, NULL, in port_event()
5807 hub_port_disable(hub, port1, 1); in port_event()
5821 hub_port_connect_change(hub, port1, portstatus, portchange); in port_event()
5828 struct usb_hub *hub; in hub_event() local
5834 hub = container_of(work, struct usb_hub, events); in hub_event()
5835 hdev = hub->hdev; in hub_event()
5836 hub_dev = hub->intfdev; 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()
5853 /* If the hub has died, clean up after it */ in hub_event()
5855 hub->error = -ENODEV; in hub_event()
5856 hub_quiesce(hub, HUB_DISCONNECT); in hub_event()
5867 /* If this is an inactive hub, do nothing */ 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()
5876 dev_dbg(hub_dev, "error resetting hub: %d\n", ret); in hub_event()
5880 hub->nerrors = 0; in hub_event()
5881 hub->error = 0; 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()
5903 port_event(hub, i); in hub_event()
5909 /* deal with hub status changes */ in hub_event()
5910 if (test_and_clear_bit(0, hub->event_bits) == 0) in hub_event()
5912 else if (hub_hub_status(hub, &hubstatus, &hubchange) < 0) in hub_event()
5920 hub->limited_power = 1; in hub_event()
5922 hub->limited_power = 0; in hub_event()
5931 hub_power_on(hub, true); in hub_event()
5932 hub_hub_status(hub, &status, &unused); in hub_event()
5946 hub_put(hub); in hub_event()
6004 .name = "hub",
6020 printk(KERN_ERR "%s: can't register hub driver\n", in usb_hub_init()
6037 pr_err("%s: can't allocate workqueue for usb hub\n", usbcore_name); in usb_hub_init()
6047 * Hub resources are freed for us by usb_deregister. It calls in usb_hub_cleanup()
6051 * individual hub resources. -greg in usb_hub_cleanup()
6261 struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); in usb_reset_device() local
6271 dev_dbg(&udev->dev, "%s for root hub!\n", __func__); in usb_reset_device()
6279 port_dev = hub->ports[udev->portnum - 1]; in usb_reset_device()
6387 * @hdev: USB device belonging to the usb hub
6391 * USB drivers call this function to get hub's child device
6400 struct usb_hub *hub = usb_hub_to_struct_hub(hdev); in usb_hub_find_child() local
6404 return hub->ports[port1 - 1]->child; in usb_hub_find_child()
6411 struct usb_hub *hub = usb_hub_to_struct_hub(hdev); in usb_hub_adjust_deviceremovable() local
6415 if (!hub) in usb_hub_adjust_deviceremovable()
6420 struct usb_port *port_dev = hub->ports[i - 1]; in usb_hub_adjust_deviceremovable()
6436 struct usb_port *port_dev = hub->ports[i - 1]; in usb_hub_adjust_deviceremovable()
6456 * @hdev: USB device belonging to the usb hub
6465 struct usb_hub *hub = usb_hub_to_struct_hub(hdev); in usb_get_hub_port_acpi_handle() local
6467 if (!hub) in usb_get_hub_port_acpi_handle()
6470 return ACPI_HANDLE(&hub->ports[port1 - 1]->dev); in usb_get_hub_port_acpi_handle()