/*------------------------------------------------------------------------*
* usb_bus_detach
*
* This function is used to detach the device tree from the root.
*------------------------------------------------------------------------*/
void
usb_bus_detach(struct usb_proc_msg *pm)
{
struct usb_bus *bus;
struct usb_device *udev;
device_t dev;
bus = ((struct usb_bus_msg *)pm)->bus;
udev = bus->devices[USB_ROOT_HUB_ADDR];
dev = bus->bdev;
/* clear the softc */
device_set_softc(dev, NULL);
USB_BUS_UNLOCK(bus);
/* detach children first */
mtx_lock(&Giant);
bus_generic_detach(dev);
mtx_unlock(&Giant);
/*
* Free USB device and all subdevices, if any.
*/
usb_free_device(udev, 0);
USB_BUS_LOCK(bus);
/* clear bdev variable last */
bus->bdev = NULL;
}
/*
* Called from process context when we discover that a port has
* been disconnected.
*/
void
usb_disconnect_port(struct usbd_port *up, device_t parent)
{
usbd_device_handle dev = up->device;
const char *hubname = device_get_nameunit(parent);
int i;
DPRINTFN(3,("uhub_disconnect: up=%p dev=%p port=%d\n",
up, dev, up->portno));
#ifdef DIAGNOSTIC
if (dev == NULL) {
kprintf("usb_disconnect_port: no device\n");
return;
}
#endif
if (dev->subdevs != NULL) {
DPRINTFN(3,("usb_disconnect_port: disconnect subdevs\n"));
for (i = 0; dev->subdevs[i]; i++) {
kprintf("%s: at %s", device_get_nameunit(dev->subdevs[i]),
hubname);
if (up->portno != 0)
kprintf(" port %d", up->portno);
kprintf(" (addr %d) disconnected\n", dev->address);
device_delete_child(device_get_parent(dev->subdevs[i]), dev->subdevs[i]);
dev->subdevs[i] = NULL;
}
}
usbd_add_dev_event(USB_EVENT_DEVICE_DETACH, dev);
dev->bus->devices[dev->address] = NULL;
up->device = NULL;
usb_free_device(dev);
}
void usb_hub_port_connect_change(struct usb_device *dev, int port)
{
struct usb_device *usb;
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
unsigned short portstatus;
/* Check status */
if (usb_get_port_status(dev, port + 1, portsts) < 0) {
USB_HUB_PRINTF("get_port_status failed\n");
return;
}
portstatus = le16_to_cpu(portsts->wPortStatus);
USB_HUB_PRINTF("portstatus %x, change %x, %s\n",
portstatus,
le16_to_cpu(portsts->wPortChange),
portspeed(portstatus));
/* Clear the connection change status */
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION);
/* Disconnect any existing devices under this port */
if (((!(portstatus & USB_PORT_STAT_CONNECTION)) &&
(!(portstatus & USB_PORT_STAT_ENABLE))) || (dev->children[port])) {
USB_HUB_PRINTF("usb_disconnect(&hub->children[port]);\n");
/* Return now if nothing is connected */
if (!(portstatus & USB_PORT_STAT_CONNECTION))
return;
}
/* Reset the port */
if (hub_port_reset(dev, port, &portstatus) < 0) {
printf("cannot reset port %i!?\n", port + 1);
return;
}
/* Allocate a new device struct for it */
usb = usb_alloc_new_device(dev->controller);
if (portstatus & USB_PORT_STAT_HIGH_SPEED)
usb->speed = USB_SPEED_HIGH;
else if (portstatus & USB_PORT_STAT_LOW_SPEED)
usb->speed = USB_SPEED_LOW;
else
usb->speed = USB_SPEED_FULL;
dev->children[port] = usb;
usb->parent = dev;
usb->portnr = port + 1;
/* Run it through the hoops (find a driver, etc) */
if (usb_new_device(usb)) {
/* Woops, disable the port */
usb_free_device();
dev->children[port] = NULL;
USB_HUB_PRINTF("hub: disabling port %d\n", port + 1);
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE);
}
}
/*
* Called from process context when we discover that a port has
* been disconnected.
*/
int
usb_disconnect_port(struct usbd_port *up, device_t parent, int flags)
{
USBHIST_FUNC(); USBHIST_CALLED(usbdebug);
struct usbd_device *dev = up->up_dev;
device_t subdev;
char subdevname[16];
const char *hubname = device_xname(parent);
int i, rc;
DPRINTFN(3, "up=%p dev=%p port=%d", up, dev, up->up_portno, 0);
if (dev == NULL) {
return 0;
}
if (dev->ud_subdevlen > 0) {
DPRINTFN(3, "disconnect subdevs", 0, 0, 0, 0);
for (i = 0; i < dev->ud_subdevlen; i++) {
if ((subdev = dev->ud_subdevs[i]) == NULL)
continue;
strlcpy(subdevname, device_xname(subdev),
sizeof(subdevname));
if ((rc = config_detach(subdev, flags)) != 0)
return rc;
printf("%s: at %s", subdevname, hubname);
if (up->up_portno != 0)
printf(" port %d", up->up_portno);
printf(" (addr %d) disconnected\n", dev->ud_addr);
}
KASSERT(!dev->ud_nifaces_claimed);
}
usbd_add_dev_event(USB_EVENT_DEVICE_DETACH, dev);
dev->ud_bus->ub_devices[dev->ud_addr] = NULL;
up->up_dev = NULL;
usb_free_device(dev);
return 0;
}
/***************************************************************************
* Init USB Device
*/
int usb_init(void)
{
void *ctrl;
struct usb_device *dev;
int i, start_index = 0;
int controllers_initialized = 0;
int ret;
dev_index = 0;
asynch_allowed = 1;
usb_hub_reset();
/* first make all devices unknown */
for (i = 0; i < USB_MAX_DEVICE; i++) {
memset(&usb_dev[i], 0, sizeof(struct usb_device));
usb_dev[i].devnum = -1;
}
/* init low_level USB */
for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
/* init low_level USB */
printf("USB%d: ", i);
ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl);
if (ret == -ENODEV) { /* No such device. */
puts("Port not available.\n");
controllers_initialized++;
continue;
}
if (ret) { /* Other error. */
puts("lowlevel init failed\n");
continue;
}
/*
* lowlevel init is OK, now scan the bus for devices
* i.e. search HUBs and configure them
*/
controllers_initialized++;
start_index = dev_index;
printf("scanning bus %d for devices... ", i);
ret = usb_alloc_new_device(ctrl, &dev);
if (ret)
break;
/*
* device 0 is always present
* (root hub, so let it analyze)
*/
ret = usb_new_device(dev);
if (ret)
usb_free_device(dev->controller);
if (start_index == dev_index) {
puts("No USB Device found\n");
continue;
} else {
printf("%d USB Device(s) found\n",
dev_index - start_index);
}
usb_started = 1;
}
debug("scan end\n");
/* if we were not able to find at least one working bus, bail out */
if (controllers_initialized == 0)
puts("USB error: all controllers failed lowlevel init\n");
return usb_started ? 0 : -ENODEV;
}
int usb_hub_port_connect_change(struct usb_device *dev, int port)
{
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
unsigned short portstatus;
int ret, speed;
/* Check status */
ret = usb_get_port_status(dev, port + 1, portsts);
if (ret < 0) {
debug("get_port_status failed\n");
return ret;
}
portstatus = le16_to_cpu(portsts->wPortStatus);
debug("portstatus %x, change %x, %s\n",
portstatus,
le16_to_cpu(portsts->wPortChange),
portspeed(portstatus));
/* Clear the connection change status */
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION);
/* Disconnect any existing devices under this port */
if (((!(portstatus & USB_PORT_STAT_CONNECTION)) &&
(!(portstatus & USB_PORT_STAT_ENABLE))) ||
usb_device_has_child_on_port(dev, port)) {
debug("usb_disconnect(&hub->children[port]);\n");
/* Return now if nothing is connected */
if (!(portstatus & USB_PORT_STAT_CONNECTION))
return -ENOTCONN;
}
mdelay(200);
/* Reset the port */
ret = legacy_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;
case USB_PORT_STAT_HIGH_SPEED:
speed = USB_SPEED_HIGH;
break;
case USB_PORT_STAT_LOW_SPEED:
speed = USB_SPEED_LOW;
break;
default:
speed = USB_SPEED_FULL;
break;
}
#ifdef CONFIG_DM_USB
struct udevice *child;
ret = usb_scan_device(dev->dev, port + 1, speed, &child);
#else
struct usb_device *usb;
ret = usb_alloc_new_device(dev->controller, &usb);
if (ret) {
printf("cannot create new device: ret=%d", ret);
return ret;
}
dev->children[port] = usb;
usb->speed = speed;
usb->parent = dev;
usb->portnr = port + 1;
/* Run it through the hoops (find a driver, etc) */
ret = usb_new_device(usb);
if (ret < 0) {
/* Woops, disable the port */
usb_free_device(dev->controller);
dev->children[port] = NULL;
}
#endif
if (ret < 0) {
debug("hub: disabling port %d\n", port + 1);
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE);
}
return ret;
}
static void usb_hub_port_connect_change(struct usb_device *dev, int port)
{
struct usb_device *usb;
struct usb_port_status portsts;
unsigned short portstatus, portchange;
/* Check status */
if (usb_get_port_status(dev, port + 1, &portsts) < 0) {
dev_dbg(&dev->dev, "get_port_status failed\n");
return;
}
portstatus = le16_to_cpu(portsts.wPortStatus);
portchange = le16_to_cpu(portsts.wPortChange);
dev_dbg(&dev->dev, "portstatus %x, change %x, %s\n",
portstatus, portchange, portspeed(portstatus));
/* Clear the connection change status */
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION);
/* Disconnect any existing devices under this port */
if (dev->children[port] && !(portstatus & USB_PORT_STAT_CONNECTION)) {
dev_dbg(&dev->dev, "disconnect detected on port %d\n", port + 1);
usb_remove_device(dev->children[port]);
if (!dev->parent && dev->host->usbphy)
usb_phy_notify_disconnect(dev->host->usbphy, dev->speed);
return;
}
/* Remove disabled but connected devices */
if (dev->children[port] && !(portstatus & USB_PORT_STAT_ENABLE))
usb_remove_device(dev->children[port]);
mdelay(200);
/* Reset the port */
if (hub_port_reset(dev, port, &portstatus) < 0) {
dev_warn(&dev->dev, "cannot reset port %i!?\n", port + 1);
return;
}
mdelay(200);
/* Allocate a new device struct for it */
usb = usb_alloc_new_device();
usb->dev.parent = &dev->dev;
usb->host = dev->host;
if (portstatus & USB_PORT_STAT_HIGH_SPEED)
usb->speed = USB_SPEED_HIGH;
else if (portstatus & USB_PORT_STAT_LOW_SPEED)
usb->speed = USB_SPEED_LOW;
else
usb->speed = USB_SPEED_FULL;
dev->children[port] = usb;
usb->parent = dev;
usb->portnr = port + 1;
/* Run it through the hoops (find a driver, etc) */
if (usb_new_device(usb)) {
/* Woops, disable the port */
dev_dbg(&dev->dev, "hub: disabling port %d\n", port + 1);
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE);
usb_free_device(usb);
return;
}
if (!dev->parent && dev->host->usbphy)
usb_phy_notify_connect(dev->host->usbphy, usb->speed);
device_detect(&usb->dev);
}
