+// SPDX-License-Identifier: GPL-2.0+
/*
* Most of this source has been derived from the Linux USB
* project:
*
* Adapted for U-Boot:
* (C) Copyright 2001 Denis Peter, MPL AG Switzerland
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
/****************************************************************************
#include <common.h>
#include <command.h>
#include <dm.h>
+#include <env.h>
#include <errno.h>
+#include <malloc.h>
#include <memalign.h>
#include <asm/processor.h>
#include <asm/unaligned.h>
#include <linux/ctype.h>
+#include <linux/list.h>
#include <asm/byteorder.h>
+#ifdef CONFIG_SANDBOX
+#include <asm/state.h>
+#endif
#include <asm/unaligned.h>
-#include <dm/root.h>
-
-DECLARE_GLOBAL_DATA_PTR;
#include <usb.h>
-#ifdef CONFIG_4xx
-#include <asm/4xx_pci.h>
-#endif
#define USB_BUFSIZ 512
-/* TODO(sjg@chromium.org): Remove this when CONFIG_DM_USB is defined */
-static struct usb_hub_device hub_dev[USB_MAX_HUB];
-static int usb_hub_index;
+#define HUB_SHORT_RESET_TIME 20
+#define HUB_LONG_RESET_TIME 200
-__weak void usb_hub_reset_devices(int port)
+#define PORT_OVERCURRENT_MAX_SCAN_COUNT 3
+
+struct usb_device_scan {
+ struct usb_device *dev; /* USB hub device to scan */
+ struct usb_hub_device *hub; /* USB hub struct */
+ int port; /* USB port to scan */
+ struct list_head list;
+};
+
+static LIST_HEAD(usb_scan_list);
+
+__weak void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
{
return;
}
+static inline bool usb_hub_is_superspeed(struct usb_device *hdev)
+{
+ return hdev->descriptor.bDeviceProtocol == 3;
+}
+
+#if CONFIG_IS_ENABLED(DM_USB)
+bool usb_hub_is_root_hub(struct udevice *hub)
+{
+ if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB)
+ return true;
+
+ return false;
+}
+
+static int usb_set_hub_depth(struct usb_device *dev, int depth)
+{
+ if (depth < 0 || depth > 4)
+ return -EINVAL;
+
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_SET_HUB_DEPTH, USB_DIR_OUT | USB_RT_HUB,
+ depth, 0, NULL, 0, USB_CNTL_TIMEOUT);
+}
+#endif
+
static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
{
+ unsigned short dtype = USB_DT_HUB;
+
+ if (usb_hub_is_superspeed(dev))
+ dtype = USB_DT_SS_HUB;
+
return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB,
- USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT);
+ dtype << 8, 0, data, size, USB_CNTL_TIMEOUT);
}
static int usb_clear_port_feature(struct usb_device *dev, int port, int feature)
int usb_get_port_status(struct usb_device *dev, int port, void *data)
{
- return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ int ret;
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port,
- data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT);
+ data, sizeof(struct usb_port_status), USB_CNTL_TIMEOUT);
+
+#if CONFIG_IS_ENABLED(DM_USB)
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Translate the USB 3.0 hub port status field into the old version
+ * that U-Boot understands. Do this only when the hub is not root hub.
+ * For root hub, the port status field has already been translated
+ * in the host controller driver (see xhci_submit_root() in xhci.c).
+ *
+ * Note: this only supports driver model.
+ */
+
+ if (!usb_hub_is_root_hub(dev->dev) && usb_hub_is_superspeed(dev)) {
+ struct usb_port_status *status = (struct usb_port_status *)data;
+ u16 tmp = (status->wPortStatus) & USB_SS_PORT_STAT_MASK;
+
+ if (status->wPortStatus & USB_SS_PORT_STAT_POWER)
+ tmp |= USB_PORT_STAT_POWER;
+ if ((status->wPortStatus & USB_SS_PORT_STAT_SPEED) ==
+ USB_SS_PORT_STAT_SPEED_5GBPS)
+ tmp |= USB_PORT_STAT_SUPER_SPEED;
+
+ status->wPortStatus = tmp;
+ }
+#endif
+
+ return ret;
}
debug("port %d returns %lX\n", i + 1, dev->status);
}
+#ifdef CONFIG_SANDBOX
+ /*
+ * Don't set timeout / delay values here. This results
+ * in these values still being reset to 0.
+ */
+ if (state_get_skip_delays())
+ return;
+#endif
+
/*
* Wait for power to become stable,
* plus spec-defined max time for device to connect
* but allow this time to be increased via env variable as some
* devices break the spec and require longer warm-up times
*/
- env = getenv("usb_pgood_delay");
+ env = env_get("usb_pgood_delay");
if (env)
pgood_delay = max(pgood_delay,
(unsigned)simple_strtol(env, NULL, 0));
debug("pgood_delay=%dms\n", pgood_delay);
- mdelay(pgood_delay + 1000);
+
+ /*
+ * Do a minimum delay of the larger value of 100ms or pgood_delay
+ * so that the power can stablize before the devices are queried
+ */
+ hub->query_delay = get_timer(0) + max(100, (int)pgood_delay);
+
+ /*
+ * Record the power-on timeout here. The max. delay (timeout)
+ * will be done based on this value in the USB port loop in
+ * usb_hub_configure() later.
+ */
+ hub->connect_timeout = hub->query_delay + 1000;
+ debug("devnum=%d poweron: query_delay=%d connect_timeout=%d\n",
+ dev->devnum, max(100, (int)pgood_delay),
+ max(100, (int)pgood_delay) + 1000);
}
+#if !CONFIG_IS_ENABLED(DM_USB)
+static struct usb_hub_device hub_dev[USB_MAX_HUB];
+static int usb_hub_index;
+
void usb_hub_reset(void)
{
usb_hub_index = 0;
+
+ /* Zero out global hub_dev in case its re-used again */
+ memset(hub_dev, 0, sizeof(hub_dev));
}
static struct usb_hub_device *usb_hub_allocate(void)
printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB);
return NULL;
}
+#endif
#define MAX_TRIES 5
-static inline char *portspeed(int portstatus)
+static inline const char *portspeed(int portstatus)
{
- char *speed_str;
-
switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
case USB_PORT_STAT_SUPER_SPEED:
- speed_str = "5 Gb/s";
- break;
+ return "5 Gb/s";
case USB_PORT_STAT_HIGH_SPEED:
- speed_str = "480 Mb/s";
- break;
+ return "480 Mb/s";
case USB_PORT_STAT_LOW_SPEED:
- speed_str = "1.5 Mb/s";
- break;
+ return "1.5 Mb/s";
default:
- speed_str = "12 Mb/s";
- break;
+ return "12 Mb/s";
}
-
- return speed_str;
}
-int legacy_hub_port_reset(struct usb_device *dev, int port,
- unsigned short *portstat)
+/**
+ * usb_hub_port_reset() - reset a port given its usb_device pointer
+ *
+ * Reset a hub port and see if a device is present on that port, providing
+ * sufficient time for it to show itself. The port status is returned.
+ *
+ * @dev: USB device to reset
+ * @port: Port number to reset (note ports are numbered from 0 here)
+ * @portstat: Returns port status
+ */
+static int usb_hub_port_reset(struct usb_device *dev, int port,
+ unsigned short *portstat)
{
int err, tries;
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
unsigned short portstatus, portchange;
+ int delay = HUB_SHORT_RESET_TIME; /* start with short reset delay */
-#ifdef CONFIG_DM_USB
+#if CONFIG_IS_ENABLED(DM_USB)
debug("%s: resetting '%s' port %d...\n", __func__, dev->dev->name,
port + 1);
#else
if (err < 0)
return err;
- mdelay(200);
+ mdelay(delay);
if (usb_get_port_status(dev, port + 1, portsts) < 0) {
debug("get_port_status failed status %lX\n",
if (portstatus & USB_PORT_STAT_ENABLE)
break;
- mdelay(200);
+ /* Switch to long reset delay for the next round */
+ delay = HUB_LONG_RESET_TIME;
}
if (tries == MAX_TRIES) {
return 0;
}
-#ifdef CONFIG_DM_USB
-int hub_port_reset(struct udevice *dev, int port, unsigned short *portstat)
-{
- struct usb_device *udev = dev_get_parent_priv(dev);
-
- return legacy_hub_port_reset(udev, port, portstat);
-}
-#endif
-
int usb_hub_port_connect_change(struct usb_device *dev, int port)
{
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
if (!(portstatus & USB_PORT_STAT_CONNECTION))
return -ENOTCONN;
}
- mdelay(200);
/* Reset the port */
- ret = legacy_hub_port_reset(dev, port, &portstatus);
+ ret = usb_hub_port_reset(dev, port, &portstatus);
if (ret < 0) {
if (ret != -ENXIO)
printf("cannot reset port %i!?\n", port + 1);
return ret;
}
- mdelay(200);
-
switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
case USB_PORT_STAT_SUPER_SPEED:
speed = USB_SPEED_SUPER;
break;
}
-#ifdef CONFIG_DM_USB
+#if CONFIG_IS_ENABLED(DM_USB)
struct udevice *child;
ret = usb_scan_device(dev->dev, port + 1, speed, &child);
return ret;
}
+static int usb_scan_port(struct usb_device_scan *usb_scan)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
+ unsigned short portstatus;
+ unsigned short portchange;
+ struct usb_device *dev;
+ struct usb_hub_device *hub;
+ int ret = 0;
+ int i;
+
+ dev = usb_scan->dev;
+ hub = usb_scan->hub;
+ i = usb_scan->port;
+
+ /*
+ * Don't talk to the device before the query delay is expired.
+ * This is needed for voltages to stabalize.
+ */
+ if (get_timer(0) < hub->query_delay)
+ return 0;
+
+ ret = usb_get_port_status(dev, i + 1, portsts);
+ if (ret < 0) {
+ debug("get_port_status failed\n");
+ if (get_timer(0) >= hub->connect_timeout) {
+ debug("devnum=%d port=%d: timeout\n",
+ dev->devnum, i + 1);
+ /* Remove this device from scanning list */
+ list_del(&usb_scan->list);
+ free(usb_scan);
+ return 0;
+ }
+ return 0;
+ }
+
+ portstatus = le16_to_cpu(portsts->wPortStatus);
+ portchange = le16_to_cpu(portsts->wPortChange);
+ debug("Port %d Status %X Change %X\n", i + 1, portstatus, portchange);
+
+ /*
+ * No connection change happened, wait a bit more.
+ *
+ * For some situation, the hub reports no connection change but a
+ * device is connected to the port (eg: CCS bit is set but CSC is not
+ * in the PORTSC register of a root hub), ignore such case.
+ */
+ if (!(portchange & USB_PORT_STAT_C_CONNECTION) &&
+ !(portstatus & USB_PORT_STAT_CONNECTION)) {
+ if (get_timer(0) >= hub->connect_timeout) {
+ debug("devnum=%d port=%d: timeout\n",
+ dev->devnum, i + 1);
+ /* Remove this device from scanning list */
+ list_del(&usb_scan->list);
+ free(usb_scan);
+ return 0;
+ }
+ return 0;
+ }
+
+ if (portchange & USB_PORT_STAT_C_RESET) {
+ debug("port %d reset change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
+ }
+
+ if ((portchange & USB_SS_PORT_STAT_C_BH_RESET) &&
+ usb_hub_is_superspeed(dev)) {
+ debug("port %d BH reset change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_SS_PORT_FEAT_C_BH_RESET);
+ }
+
+ /* A new USB device is ready at this point */
+ debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1);
+
+ usb_hub_port_connect_change(dev, i);
+
+ if (portchange & USB_PORT_STAT_C_ENABLE) {
+ debug("port %d enable change, status %x\n", i + 1, portstatus);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE);
+ /*
+ * The following hack causes a ghost device problem
+ * to Faraday EHCI
+ */
+#ifndef CONFIG_USB_EHCI_FARADAY
+ /*
+ * EM interference sometimes causes bad shielded USB
+ * devices to be shutdown by the hub, this hack enables
+ * them again. Works at least with mouse driver
+ */
+ if (!(portstatus & USB_PORT_STAT_ENABLE) &&
+ (portstatus & USB_PORT_STAT_CONNECTION) &&
+ usb_device_has_child_on_port(dev, i)) {
+ debug("already running port %i disabled by hub (EMI?), re-enabling...\n",
+ i + 1);
+ usb_hub_port_connect_change(dev, i);
+ }
+#endif
+ }
+
+ if (portstatus & USB_PORT_STAT_SUSPEND) {
+ debug("port %d suspend change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_SUSPEND);
+ }
+
+ if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
+ debug("port %d over-current change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1,
+ USB_PORT_FEAT_C_OVER_CURRENT);
+ /* Only power-on this one port */
+ usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
+ hub->overcurrent_count[i]++;
+
+ /*
+ * If the max-scan-count is not reached, return without removing
+ * the device from scan-list. This will re-issue a new scan.
+ */
+ if (hub->overcurrent_count[i] <=
+ PORT_OVERCURRENT_MAX_SCAN_COUNT)
+ return 0;
+
+ /* Otherwise the device will get removed */
+ printf("Port %d over-current occurred %d times\n", i + 1,
+ hub->overcurrent_count[i]);
+ }
+
+ /*
+ * We're done with this device, so let's remove this device from
+ * scanning list
+ */
+ list_del(&usb_scan->list);
+ free(usb_scan);
+
+ return 0;
+}
+
+static int usb_device_list_scan(void)
+{
+ struct usb_device_scan *usb_scan;
+ struct usb_device_scan *tmp;
+ static int running;
+ int ret = 0;
+
+ /* Only run this loop once for each controller */
+ if (running)
+ return 0;
+
+ running = 1;
+
+ while (1) {
+ /* We're done, once the list is empty again */
+ if (list_empty(&usb_scan_list))
+ goto out;
+
+ list_for_each_entry_safe(usb_scan, tmp, &usb_scan_list, list) {
+ int ret;
+
+ /* Scan this port */
+ ret = usb_scan_port(usb_scan);
+ if (ret)
+ goto out;
+ }
+ }
+
+out:
+ /*
+ * This USB controller has finished scanning all its connected
+ * USB devices. Set "running" back to 0, so that other USB controllers
+ * will scan their devices too.
+ */
+ running = 0;
+
+ return ret;
+}
+
+static struct usb_hub_device *usb_get_hub_device(struct usb_device *dev)
+{
+ struct usb_hub_device *hub;
+
+#if !CONFIG_IS_ENABLED(DM_USB)
+ /* "allocate" Hub device */
+ hub = usb_hub_allocate();
+#else
+ hub = dev_get_uclass_priv(dev->dev);
+#endif
+
+ return hub;
+}
static int usb_hub_configure(struct usb_device *dev)
{
short hubCharacteristics;
struct usb_hub_descriptor *descriptor;
struct usb_hub_device *hub;
- __maybe_unused struct usb_hub_status *hubsts;
+ struct usb_hub_status *hubsts;
int ret;
- /* "allocate" Hub device */
- hub = usb_hub_allocate();
+ hub = usb_get_hub_device(dev);
if (hub == NULL)
return -ENOMEM;
hub->pusb_dev = dev;
+
/* Get the the hub descriptor */
ret = usb_get_hub_descriptor(dev, buffer, 4);
if (ret < 0) {
&descriptor->wHubCharacteristics)),
&hub->desc.wHubCharacteristics);
/* set the bitmap */
- bitmap = (unsigned char *)&hub->desc.DeviceRemovable[0];
+ bitmap = (unsigned char *)&hub->desc.u.hs.DeviceRemovable[0];
/* devices not removable by default */
memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8);
- bitmap = (unsigned char *)&hub->desc.PortPowerCtrlMask[0];
+ bitmap = (unsigned char *)&hub->desc.u.hs.PortPowerCtrlMask[0];
memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */
for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++)
- hub->desc.DeviceRemovable[i] = descriptor->DeviceRemovable[i];
+ hub->desc.u.hs.DeviceRemovable[i] =
+ descriptor->u.hs.DeviceRemovable[i];
for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++)
- hub->desc.PortPowerCtrlMask[i] = descriptor->PortPowerCtrlMask[i];
+ hub->desc.u.hs.PortPowerCtrlMask[i] =
+ descriptor->u.hs.PortPowerCtrlMask[i];
dev->maxchild = descriptor->bNbrPorts;
debug("%d ports detected\n", dev->maxchild);
break;
}
+ switch (dev->descriptor.bDeviceProtocol) {
+ case USB_HUB_PR_FS:
+ break;
+ case USB_HUB_PR_HS_SINGLE_TT:
+ debug("Single TT\n");
+ break;
+ case USB_HUB_PR_HS_MULTI_TT:
+ ret = usb_set_interface(dev, 0, 1);
+ if (ret == 0) {
+ debug("TT per port\n");
+ hub->tt.multi = true;
+ } else {
+ debug("Using single TT (err %d)\n", ret);
+ }
+ break;
+ case USB_HUB_PR_SS:
+ /* USB 3.0 hubs don't have a TT */
+ break;
+ default:
+ debug("Unrecognized hub protocol %d\n",
+ dev->descriptor.bDeviceProtocol);
+ break;
+ }
+
+ /* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */
+ switch (hubCharacteristics & HUB_CHAR_TTTT) {
+ case HUB_TTTT_8_BITS:
+ if (dev->descriptor.bDeviceProtocol != 0) {
+ hub->tt.think_time = 666;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 8, hub->tt.think_time);
+ }
+ break;
+ case HUB_TTTT_16_BITS:
+ hub->tt.think_time = 666 * 2;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 16, hub->tt.think_time);
+ break;
+ case HUB_TTTT_24_BITS:
+ hub->tt.think_time = 666 * 3;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 24, hub->tt.think_time);
+ break;
+ case HUB_TTTT_32_BITS:
+ hub->tt.think_time = 666 * 4;
+ debug("TT requires at most %d FS bit times (%d ns)\n",
+ 32, hub->tt.think_time);
+ break;
+ }
+
debug("power on to power good time: %dms\n",
descriptor->bPwrOn2PwrGood * 2);
debug("hub controller current requirement: %dmA\n",
for (i = 0; i < dev->maxchild; i++)
debug("port %d is%s removable\n", i + 1,
- hub->desc.DeviceRemovable[(i + 1) / 8] & \
+ hub->desc.u.hs.DeviceRemovable[(i + 1) / 8] & \
(1 << ((i + 1) % 8)) ? " not" : "");
if (sizeof(struct usb_hub_status) > USB_BUFSIZ) {
return ret;
}
-#ifdef DEBUG
hubsts = (struct usb_hub_status *)buffer;
-#endif
debug("get_hub_status returned status %X, change %X\n",
le16_to_cpu(hubsts->wHubStatus),
debug("%sover-current condition exists\n",
(le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \
"" : "no ");
- usb_hub_power_on(hub);
+#if CONFIG_IS_ENABLED(DM_USB)
/*
- * Reset any devices that may be in a bad state when applying
- * the power. This is a __weak function. Resetting of the devices
- * should occur in the board file of the device.
+ * Update USB host controller's internal representation of this hub
+ * after the hub descriptor is fetched.
*/
- for (i = 0; i < dev->maxchild; i++)
- usb_hub_reset_devices(i + 1);
-
- for (i = 0; i < dev->maxchild; i++) {
- ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
- unsigned short portstatus, portchange;
- int ret;
- ulong start = get_timer(0);
-
-#ifdef CONFIG_DM_USB
- debug("\n\nScanning '%s' port %d\n", dev->dev->name, i + 1);
-#else
- debug("\n\nScanning port %d\n", i + 1);
-#endif
- /*
- * Wait for (whichever finishes first)
- * - A maximum of 10 seconds
- * This is a purely observational value driven by connecting
- * a few broken pen drives and taking the max * 1.5 approach
- * - connection_change and connection state to report same
- * state
- */
- do {
- ret = usb_get_port_status(dev, i + 1, portsts);
- if (ret < 0) {
- debug("get_port_status failed\n");
- break;
- }
-
- portstatus = le16_to_cpu(portsts->wPortStatus);
- portchange = le16_to_cpu(portsts->wPortChange);
-
- /* No connection change happened, wait a bit more. */
- if (!(portchange & USB_PORT_STAT_C_CONNECTION))
- continue;
-
- /* Test if the connection came up, and if so, exit. */
- if (portstatus & USB_PORT_STAT_CONNECTION)
- break;
-
- } while (get_timer(start) < CONFIG_SYS_HZ * 1);
+ ret = usb_update_hub_device(dev);
+ if (ret < 0 && ret != -ENOSYS) {
+ debug("%s: failed to update hub device for HCD (%x)\n",
+ __func__, ret);
+ return ret;
+ }
- if (ret < 0)
- continue;
+ /*
+ * A maximum of seven tiers are allowed in a USB topology, and the
+ * root hub occupies the first tier. The last tier ends with a normal
+ * USB device. USB 3.0 hubs use a 20-bit field called 'route string'
+ * to route packets to the designated downstream port. The hub uses a
+ * hub depth value multiplied by four as an offset into the 'route
+ * string' to locate the bits it uses to determine the downstream
+ * port number.
+ */
+ if (usb_hub_is_root_hub(dev->dev)) {
+ hub->hub_depth = -1;
+ } else {
+ struct udevice *hdev;
+ int depth = 0;
+
+ hdev = dev->dev->parent;
+ while (!usb_hub_is_root_hub(hdev)) {
+ depth++;
+ hdev = hdev->parent;
+ }
- debug("Port %d Status %X Change %X\n",
- i + 1, portstatus, portchange);
+ hub->hub_depth = depth;
- if (portchange & USB_PORT_STAT_C_CONNECTION) {
- debug("port %d connection change\n", i + 1);
- usb_hub_port_connect_change(dev, i);
- }
- if (portchange & USB_PORT_STAT_C_ENABLE) {
- debug("port %d enable change, status %x\n",
- i + 1, portstatus);
- usb_clear_port_feature(dev, i + 1,
- USB_PORT_FEAT_C_ENABLE);
+ if (usb_hub_is_superspeed(dev)) {
+ debug("set hub (%p) depth to %d\n", dev, depth);
/*
- * The following hack causes a ghost device problem
- * to Faraday EHCI
+ * This request sets the value that the hub uses to
+ * determine the index into the 'route string index'
+ * for this hub.
*/
-#ifndef CONFIG_USB_EHCI_FARADAY
- /* EM interference sometimes causes bad shielded USB
- * devices to be shutdown by the hub, this hack enables
- * them again. Works at least with mouse driver */
- if (!(portstatus & USB_PORT_STAT_ENABLE) &&
- (portstatus & USB_PORT_STAT_CONNECTION) &&
- usb_device_has_child_on_port(dev, i)) {
- debug("already running port %i " \
- "disabled by hub (EMI?), " \
- "re-enabling...\n", i + 1);
- usb_hub_port_connect_change(dev, i);
+ ret = usb_set_hub_depth(dev, depth);
+ if (ret < 0) {
+ debug("%s: failed to set hub depth (%lX)\n",
+ __func__, dev->status);
+ return ret;
}
-#endif
- }
- if (portstatus & USB_PORT_STAT_SUSPEND) {
- debug("port %d suspend change\n", i + 1);
- usb_clear_port_feature(dev, i + 1,
- USB_PORT_FEAT_SUSPEND);
}
+ }
+#endif
- if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
- debug("port %d over-current change\n", i + 1);
- usb_clear_port_feature(dev, i + 1,
- USB_PORT_FEAT_C_OVER_CURRENT);
- usb_hub_power_on(hub);
- }
+ usb_hub_power_on(hub);
+
+ /*
+ * Reset any devices that may be in a bad state when applying
+ * the power. This is a __weak function. Resetting of the devices
+ * should occur in the board file of the device.
+ */
+ for (i = 0; i < dev->maxchild; i++)
+ usb_hub_reset_devices(hub, i + 1);
- if (portchange & USB_PORT_STAT_C_RESET) {
- debug("port %d reset change\n", i + 1);
- usb_clear_port_feature(dev, i + 1,
- USB_PORT_FEAT_C_RESET);
+ /*
+ * Only add the connected USB devices, including potential hubs,
+ * to a scanning list. This list will get scanned and devices that
+ * are detected (either via port connected or via port timeout)
+ * will get removed from this list. Scanning of the devices on this
+ * list will continue until all devices are removed.
+ */
+ for (i = 0; i < dev->maxchild; i++) {
+ struct usb_device_scan *usb_scan;
+
+ usb_scan = calloc(1, sizeof(*usb_scan));
+ if (!usb_scan) {
+ printf("Can't allocate memory for USB device!\n");
+ return -ENOMEM;
}
- } /* end for i all ports */
+ usb_scan->dev = dev;
+ usb_scan->hub = hub;
+ usb_scan->port = i;
+ list_add_tail(&usb_scan->list, &usb_scan_list);
+ }
- return 0;
+ /*
+ * And now call the scanning code which loops over the generated list
+ */
+ ret = usb_device_list_scan();
+
+ return ret;
}
static int usb_hub_check(struct usb_device *dev, int ifnum)
return ret;
}
-#ifdef CONFIG_DM_USB
+#if CONFIG_IS_ENABLED(DM_USB)
int usb_hub_scan(struct udevice *hub)
{
struct usb_device *udev = dev_get_parent_priv(hub);
return usb_hub_configure(udev);
}
-static int usb_hub_post_bind(struct udevice *dev)
-{
- /* Scan the bus for devices */
- return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
-}
-
static int usb_hub_post_probe(struct udevice *dev)
{
debug("%s\n", __func__);
UCLASS_DRIVER(usb_hub) = {
.id = UCLASS_USB_HUB,
.name = "usb_hub",
- .post_bind = usb_hub_post_bind,
+ .post_bind = dm_scan_fdt_dev,
.post_probe = usb_hub_post_probe,
.child_pre_probe = usb_child_pre_probe,
.per_child_auto_alloc_size = sizeof(struct usb_device),
.per_child_platdata_auto_alloc_size = sizeof(struct usb_dev_platdata),
+ .per_device_auto_alloc_size = sizeof(struct usb_hub_device),
};
static const struct usb_device_id hub_id_table[] = {
projects / oweals / u-boot.git / blobdiff