usbd_status
uhub_explore(usbd_device_handle dev)
{
usb_hub_descriptor_t *hd = &dev->hub->hubdesc;
device_t self = dev->hub->hubdev;
struct uhub_softc *sc = device_get_softc(self);
struct usbd_port *up;
usbd_status err;
int speed;
int port;
int change, status;
DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address));
if (!sc->sc_running)
return (USBD_NOT_STARTED);
/* Ignore hubs that are too deep. */
if (dev->depth > USB_HUB_MAX_DEPTH)
return (USBD_TOO_DEEP);
for(port = 1; port <= hd->bNbrPorts; port++) {
up = &dev->hub->ports[port-1];
err = usbd_get_port_status(dev, port, &up->status);
if (err) {
DPRINTF(("uhub_explore: get port status failed, "
"error=%s\n", usbd_errstr(err)));
continue;
}
status = UGETW(up->status.wPortStatus);
change = UGETW(up->status.wPortChange);
DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n",
device_get_nameunit(self), port, status, change));
if (change & UPS_C_PORT_ENABLED) {
DPRINTF(("uhub_explore: C_PORT_ENABLED 0x%x\n", change));
usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);
if (change & UPS_C_CONNECT_STATUS) {
/* Ignore the port error if the device
vanished. */
} else if (status & UPS_PORT_ENABLED) {
device_printf(self,
"illegal enable change, port %d\n", port);
} else {
/* Port error condition. */
if (up->restartcnt) /* no message first time */
device_printf(self,
"port error, restarting "
"port %d\n", port);
if (up->restartcnt++ < USBD_RESTART_MAX)
goto disco;
else
device_printf(self,
"port error, giving up "
"port %d\n", port);
}
}
if (!(change & UPS_C_CONNECT_STATUS)) {
DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_"
"STATUS\n", port));
/* No status change, just do recursive explore. */
if (up->device != NULL && up->device->hub != NULL)
up->device->hub->explore(up->device);
#if 0 && defined(DIAGNOSTIC)
if (up->device == NULL &&
(status & UPS_CURRENT_CONNECT_STATUS))
device_printf(self,
"connected, no device\n");
#endif
continue;
}
/* We have a connect status change, handle it. */
DPRINTF(("uhub_explore: status change hub=%d port=%d\n",
dev->address, port));
usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION);
/*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/
/*
* If there is already a device on the port the change status
* must mean that is has disconnected. Looking at the
* current connect status is not enough to figure this out
* since a new unit may have been connected before we handle
* the disconnect.
*/
disco:
if (up->device != NULL) {
/* Disconnected */
DPRINTF(("uhub_explore: device addr=%d disappeared "
"on port %d\n", up->device->address, port));
usb_disconnect_port(up, self);
usbd_clear_port_feature(dev, port,
UHF_C_PORT_CONNECTION);
}
if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
/* Nothing connected, just ignore it. */
DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT"
"_STATUS\n", port));
continue;
}
/* Connected */
if (!(status & UPS_PORT_POWER))
device_printf(self,
"strange, connected port %d has no power\n",
port);
/* Wait for maximum device power up time. */
usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY);
/* Reset port, which implies enabling it. */
if (usbd_reset_port(dev, port, &up->status)) {
device_printf(self,
"port %d reset failed\n", port);
continue;
}
/* Get port status again, it might have changed during reset */
err = usbd_get_port_status(dev, port, &up->status);
if (err) {
DPRINTF(("uhub_explore: get port status failed, "
"error=%s\n", usbd_errstr(err)));
continue;
}
status = UGETW(up->status.wPortStatus);
change = UGETW(up->status.wPortChange);
if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
/* Nothing connected, just ignore it. */
#ifdef DIAGNOSTIC
device_printf(self,
"port %d, device disappeared after reset\n",
port);
#endif
continue;
}
#if 0
if (UHUB_IS_HIGH_SPEED(sc) && !(status & UPS_HIGH_SPEED)) {
device_printf(self,
"port %d, transaction translation not "
"implemented, low/full speed device ignored\n",
port);
continue;
}
#endif
/* Figure out device speed */
if (status & UPS_HIGH_SPEED)
speed = USB_SPEED_HIGH;
else if (status & UPS_LOW_SPEED)
speed = USB_SPEED_LOW;
else
speed = USB_SPEED_FULL;
/* Get device info and set its address. */
err = usbd_new_device(self, dev->bus,
dev->depth + 1, speed, port, up);
/* XXX retry a few times? */
if (err) {
DPRINTFN(-1,("uhub_explore: usb_new_device failed, "
"error=%s\n", usbd_errstr(err)));
/* Avoid addressing problems by disabling. */
/* usbd_reset_port(dev, port, &up->status); */
/*
* The unit refused to accept a new address, or had
* some other serious problem. Since we cannot leave
* at 0 we have to disable the port instead.
*/
device_printf(self,
"device problem (%s), disabling port %d\n",
usbd_errstr(err), port);
usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE);
} else {
/* The port set up succeeded, reset error count. */
up->restartcnt = 0;
if (up->device->hub)
up->device->hub->explore(up->device);
}
}
return (USBD_NORMAL_COMPLETION);
}
/*
* Called when a new device has been put in the powered state,
* but not yet in the addressed state.
* Get initial descriptor, set the address, get full descriptor,
* and attach a driver.
*/
usbd_status
usbd_new_device(device_t parent, struct usbd_bus* bus, int depth,
int speed, int port, struct usbd_port *up)
{
USBHIST_FUNC(); USBHIST_CALLED(usbdebug);
struct usbd_device *dev, *adev;
struct usbd_device *hub;
usb_device_descriptor_t *dd;
usb_port_status_t ps;
usbd_status err;
int addr;
int i;
int p;
DPRINTF("bus=%p port=%d depth=%d speed=%d", bus, port, depth, speed);
if (bus->ub_methods->ubm_newdev != NULL)
return (bus->ub_methods->ubm_newdev)(parent, bus, depth, speed,
port, up);
addr = usbd_getnewaddr(bus);
if (addr < 0) {
printf("%s: No free USB addresses, new device ignored.\n",
device_xname(bus->ub_usbctl));
return USBD_NO_ADDR;
}
dev = kmem_zalloc(sizeof(*dev), KM_SLEEP);
if (dev == NULL)
return USBD_NOMEM;
dev->ud_bus = bus;
/* Set up default endpoint handle. */
dev->ud_ep0.ue_edesc = &dev->ud_ep0desc;
/* Set up default endpoint descriptor. */
dev->ud_ep0desc.bLength = USB_ENDPOINT_DESCRIPTOR_SIZE;
dev->ud_ep0desc.bDescriptorType = UDESC_ENDPOINT;
dev->ud_ep0desc.bEndpointAddress = USB_CONTROL_ENDPOINT;
dev->ud_ep0desc.bmAttributes = UE_CONTROL;
/*
* temporary, will be fixed after first descriptor fetch
* (which uses 64 bytes so it shouldn't be less),
* highspeed devices must support 64 byte packets anyway
*/
if (speed == USB_SPEED_HIGH || speed == USB_SPEED_FULL)
USETW(dev->ud_ep0desc.wMaxPacketSize, 64);
else
USETW(dev->ud_ep0desc.wMaxPacketSize, USB_MAX_IPACKET);
dev->ud_ep0desc.bInterval = 0;
/* doesn't matter, just don't leave it uninitialized */
dev->ud_ep0.ue_toggle = 0;
dev->ud_quirks = &usbd_no_quirk;
dev->ud_addr = USB_START_ADDR;
dev->ud_ddesc.bMaxPacketSize = 0;
dev->ud_depth = depth;
dev->ud_powersrc = up;
dev->ud_myhub = up->up_parent;
up->up_dev = dev;
/* Locate port on upstream high speed hub */
for (adev = dev, hub = up->up_parent;
hub != NULL && hub->ud_speed != USB_SPEED_HIGH;
adev = hub, hub = hub->ud_myhub)
;
if (hub) {
for (p = 0; p < hub->ud_hub->uh_hubdesc.bNbrPorts; p++) {
if (hub->ud_hub->uh_ports[p].up_dev == adev) {
dev->ud_myhsport = &hub->ud_hub->uh_ports[p];
goto found;
}
}
panic("usbd_new_device: cannot find HS port");
found:
DPRINTFN(1, "high speed port %d", p, 0, 0, 0);
} else {
dev->ud_myhsport = NULL;
}
dev->ud_speed = speed;
dev->ud_langid = USBD_NOLANG;
dev->ud_cookie.cookie = ++usb_cookie_no;
/* Establish the default pipe. */
err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL,
&dev->ud_pipe0, USBD_MPSAFE);
if (err) {
usbd_remove_device(dev, up);
return err;
}
dd = &dev->ud_ddesc;
/* Try a few times in case the device is slow (i.e. outside specs.) */
for (i = 0; i < 10; i++) {
/* Get the first 8 bytes of the device descriptor. */
err = usbd_get_initial_ddesc(dev, dd);
if (!err)
break;
usbd_delay_ms(dev, 200);
if ((i & 3) == 3)
usbd_reset_port(up->up_parent, port, &ps);
}
if (err) {
DPRINTF("addr=%d, getting first desc failed: %d", addr, err,
0, 0);
usbd_remove_device(dev, up);
return err;
}
/* Windows resets the port here, do likewise */
if (up->up_parent)
usbd_reset_port(up->up_parent, port, &ps);
if (speed == USB_SPEED_HIGH) {
/* Max packet size must be 64 (sec 5.5.3). */
if (dd->bMaxPacketSize != USB_2_MAX_CTRL_PACKET) {
#ifdef DIAGNOSTIC
printf("usbd_new_device: addr=%d bad max packet "
"size=%d. adjusting to %d.\n",
addr, dd->bMaxPacketSize, USB_2_MAX_CTRL_PACKET);
#endif
dd->bMaxPacketSize = USB_2_MAX_CTRL_PACKET;
}
}
DPRINTF("adding unit addr=%d, rev=%02x, class=%d, subclass=%d", addr,
UGETW(dd->bcdUSB), dd->bDeviceClass, dd->bDeviceSubClass);
DPRINTF("protocol=%d, maxpacket=%d, len=%d, speed=%d",
dd->bDeviceProtocol, dd->bMaxPacketSize, dd->bLength, dev->ud_speed);
if (dd->bDescriptorType != UDESC_DEVICE) {
/* Illegal device descriptor */
DPRINTF("illegal descriptor %d", dd->bDescriptorType, 0, 0, 0);
usbd_remove_device(dev, up);
return USBD_INVAL;
}
if (dd->bLength < USB_DEVICE_DESCRIPTOR_SIZE) {
DPRINTF("bad length %d", dd->bLength, 0, 0, 0);
usbd_remove_device(dev, up);
return USBD_INVAL;
}
USETW(dev->ud_ep0desc.wMaxPacketSize, dd->bMaxPacketSize);
/* Re-establish the default pipe with the new MPS. */
usbd_kill_pipe(dev->ud_pipe0);
err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL,
&dev->ud_pipe0, USBD_MPSAFE);
if (err) {
DPRINTF("setup default pipe failed err %d", err, 0, 0, 0);
usbd_remove_device(dev, up);
return err;
}
/* Set the address */
DPRINTFN(5, "setting device address=%d", addr, 0, 0, 0);
err = usbd_set_address(dev, addr);
if (err) {
DPRINTF("set address %d failed, err = %d", addr, err, 0, 0);
err = USBD_SET_ADDR_FAILED;
usbd_remove_device(dev, up);
return err;
}
/* Allow device time to set new address */
usbd_delay_ms(dev, USB_SET_ADDRESS_SETTLE);
dev->ud_addr = addr; /* new device address now */
bus->ub_devices[addr] = dev;
/* Re-establish the default pipe with the new address. */
usbd_kill_pipe(dev->ud_pipe0);
err = usbd_setup_pipe_flags(dev, 0, &dev->ud_ep0, USBD_DEFAULT_INTERVAL,
&dev->ud_pipe0, USBD_MPSAFE);
if (err) {
DPRINTF("setup default pipe failed, err = %d", err, 0, 0, 0);
usbd_remove_device(dev, up);
return err;
}
err = usbd_reload_device_desc(dev);
if (err) {
DPRINTF("addr=%d, getting full desc failed, err = %d", addr,
err, 0, 0);
usbd_remove_device(dev, up);
return err;
}
/* Assume 100mA bus powered for now. Changed when configured. */
dev->ud_power = USB_MIN_POWER;
dev->ud_selfpowered = 0;
DPRINTF("new dev (addr %d), dev=%p, parent=%p", addr, dev, parent, 0);
usbd_get_device_strings(dev);
usbd_add_dev_event(USB_EVENT_DEVICE_ATTACH, dev);
if (port == 0) { /* root hub */
KASSERT(addr == 1);
usbd_attach_roothub(parent, dev);
return USBD_NORMAL_COMPLETION;
}
err = usbd_probe_and_attach(parent, dev, port, addr);
if (err) {
usbd_remove_device(dev, up);
return err;
}
return USBD_NORMAL_COMPLETION;
}
int
uhub_port_connect(struct uhub_softc *sc, int port, int status, int change)
{
struct usbd_port *up = &sc->sc_hub->hub->ports[port-1];
int speed;
/* We have a connect status change, handle it. */
usbd_clear_port_feature(sc->sc_hub, port, UHF_C_PORT_CONNECTION);
/*
* If there is already a device on the port the change status
* must mean that is has disconnected. Looking at the
* current connect status is not enough to figure this out
* since a new unit may have been connected before we handle
* the disconnect.
*/
if (up->device != NULL) {
/* Disconnected */
usbd_detach(up->device, &sc->sc_dev);
up->device = NULL;
}
/* Nothing connected, just ignore it. */
if ((status & UPS_CURRENT_CONNECT_STATUS) == 0)
return (0);
/* Connected */
if ((status & (UPS_PORT_POWER|UPS_PORT_POWER_SS)) == 0) {
printf("%s: connected port %d has no power\n", DEVNAME(sc),
port);
return (-1);
}
/* Wait for maximum device power up time. */
usbd_delay_ms(sc->sc_hub, USB_PORT_POWERUP_DELAY);
/* Reset port, which implies enabling it. */
if (usbd_reset_port(sc->sc_hub, port)) {
printf("%s: port %d reset failed\n", DEVNAME(sc), port);
return (-1);
}
/* Get port status again, it might have changed during reset */
if (usbd_get_port_status(sc->sc_hub, port, &up->status))
return (-1);
status = UGETW(up->status.wPortStatus);
change = UGETW(up->status.wPortChange);
DPRINTF("%s: port %d status=0x%04x change=0x%04x\n", DEVNAME(sc),
port, status, change);
/* Nothing connected, just ignore it. */
if ((status & UPS_CURRENT_CONNECT_STATUS) == 0) {
DPRINTF("%s: port %d, device disappeared after reset\n",
DEVNAME(sc), port);
return (-1);
}
/*
* Figure out device speed. This is a bit tricky because
* UPS_PORT_POWER_SS and UPS_LOW_SPEED share the same bit.
*/
if ((status & UPS_PORT_POWER) == 0)
status &= ~UPS_PORT_POWER_SS;
if (status & UPS_HIGH_SPEED)
speed = USB_SPEED_HIGH;
else if (status & UPS_LOW_SPEED)
speed = USB_SPEED_LOW;
else {
/*
* If there is no power bit set, it is certainly
* a Super Speed device, so use the speed of its
* parent hub.
*/
if (status & UPS_PORT_POWER)
speed = USB_SPEED_FULL;
else
speed = sc->sc_hub->speed;
}
/*
* Reduce the speed, otherwise we won't setup the proper
* transfer methods.
*/
if (speed > sc->sc_hub->speed)
speed = sc->sc_hub->speed;
/* Get device info and set its address. */
if (usbd_new_device(&sc->sc_dev, sc->sc_hub->bus, sc->sc_hub->depth + 1,
speed, port, up)) {
/*
* The unit refused to accept a new address, or had
* some other serious problem. Since we cannot leave
* at 0 we have to disable the port instead.
*/
printf("%s: device problem, disabling port %d\n", DEVNAME(sc),
port);
usbd_clear_port_feature(sc->sc_hub, port, UHF_PORT_ENABLE);
return (-1);
}
return (0);
}
/*
* Called when a new device has been put in the powered state,
* but not yet in the addressed state.
* Get initial descriptor, set the address, get full descriptor,
* and attach a driver.
*/
usbd_status
usbd_new_device(device_t parent, usbd_bus_handle bus, int depth,
int speed, int port, struct usbd_port *up)
{
usbd_device_handle dev, adev;
struct usbd_device *hub;
usb_device_descriptor_t *dd;
usb_port_status_t ps;
usbd_status err;
int addr;
int i;
int p;
DPRINTF(("usbd_new_device bus=%p port=%d depth=%d speed=%d\n",
bus, port, depth, speed));
addr = usbd_getnewaddr(bus);
if (addr < 0) {
kprintf("%s: No free USB addresses, new device ignored.\n",
device_get_nameunit(bus->bdev));
return (USBD_NO_ADDR);
}
dev = kmalloc(sizeof *dev, M_USB, M_INTWAIT | M_ZERO);
dev->bus = bus;
/* Set up default endpoint handle. */
dev->def_ep.edesc = &dev->def_ep_desc;
/* Set up default endpoint descriptor. */
dev->def_ep_desc.bLength = USB_ENDPOINT_DESCRIPTOR_SIZE;
dev->def_ep_desc.bDescriptorType = UDESC_ENDPOINT;
dev->def_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT;
dev->def_ep_desc.bmAttributes = UE_CONTROL;
USETW(dev->def_ep_desc.wMaxPacketSize, USB_MAX_IPACKET);
dev->def_ep_desc.bInterval = 0;
dev->quirks = &usbd_no_quirk;
dev->address = USB_START_ADDR;
dev->ddesc.bMaxPacketSize = 0;
dev->depth = depth;
dev->powersrc = up;
dev->myhub = up->parent;
up->device = dev;
/* Locate port on upstream high speed hub */
for (adev = dev, hub = up->parent;
hub != NULL && hub->speed != USB_SPEED_HIGH;
adev = hub, hub = hub->myhub)
;
if (hub) {
for (p = 0; p < hub->hub->hubdesc.bNbrPorts; p++) {
if (hub->hub->ports[p].device == adev) {
dev->myhsport = &hub->hub->ports[p];
goto found;
}
}
panic("usbd_new_device: cannot find HS port\n");
found:
DPRINTFN(1,("usbd_new_device: high speed port %d\n", p));
} else {
dev->myhsport = NULL;
}
dev->speed = speed;
dev->langid = USBD_NOLANG;
dev->cookie.cookie = ++usb_cookie_no;
/* Establish the default pipe. */
err = usbd_setup_pipe(dev, 0, &dev->def_ep, USBD_DEFAULT_INTERVAL,
&dev->default_pipe);
if (err) {
usbd_remove_device(dev, up);
return (err);
}
/* Set the address. Do this early; some devices need that. */
/* Try a few times in case the device is slow (i.e. outside specs.) */
DPRINTFN(5,("usbd_new_device: setting device address=%d\n", addr));
for (i = 0; i < 5; i++) {
err = usbd_set_address(dev, addr);
if (!err)
break;
usbd_delay_ms(dev, 200);
if ((i & 3) == 3) {
DPRINTFN(-1,("usb_new_device: set address %d "
"failed - trying a port reset\n", addr));
usbd_reset_port(up->parent, port, &ps);
}
}
if (err) {
DPRINTFN(-1,("usb_new_device: set address %d failed\n", addr));
err = USBD_SET_ADDR_FAILED;
usbd_remove_device(dev, up);
return (err);
}
/* Allow device time to set new address */
usbd_delay_ms(dev, USB_SET_ADDRESS_SETTLE);
/* Kill the pipe */
usbd_kill_pipe(dev->default_pipe);
dev->default_pipe = NULL;
dev->address = addr; /* New device address now */
bus->devices[addr] = dev;
/* Re-establish the default pipe. */
err = usbd_setup_pipe(dev, 0, &dev->def_ep, USBD_DEFAULT_INTERVAL,
&dev->default_pipe);
if (err) {
usbd_remove_device(dev, up);
return (err);
}
usbd_delay_ms(dev, 200);
dd = &dev->ddesc;
/* Get the first 8 bytes of the device descriptor. */
err = usbd_get_desc(dev, UDESC_DEVICE, 0, USB_MAX_IPACKET, dd);
if (err) {
DPRINTFN(-1, ("usbd_new_device: addr=%d, getting first desc "
"failed\n", addr));
usbd_remove_device(dev, up);
return (err);
}
if (speed == USB_SPEED_HIGH) {
/* Max packet size must be 64 (sec 5.5.3). */
if (dd->bMaxPacketSize != USB_2_MAX_CTRL_PACKET) {
#ifdef DIAGNOSTIC
kprintf("usbd_new_device: addr=%d bad max packet size\n",
addr);
#endif
dd->bMaxPacketSize = USB_2_MAX_CTRL_PACKET;
}
}
DPRINTF(("usbd_new_device: adding unit addr=%d, rev=%02x, class=%d, "
"subclass=%d, protocol=%d, maxpacket=%d, len=%d, speed=%d\n",
addr,UGETW(dd->bcdUSB), dd->bDeviceClass, dd->bDeviceSubClass,
dd->bDeviceProtocol, dd->bMaxPacketSize, dd->bLength,
dev->speed));
if (dd->bDescriptorType != UDESC_DEVICE) {
/* Illegal device descriptor */
DPRINTFN(-1,("usbd_new_device: illegal descriptor %d\n",
dd->bDescriptorType));
usbd_remove_device(dev, up);
return (USBD_INVAL);
}
if (dd->bLength < USB_DEVICE_DESCRIPTOR_SIZE) {
DPRINTFN(-1,("usbd_new_device: bad length %d\n", dd->bLength));
usbd_remove_device(dev, up);
return (USBD_INVAL);
}
USETW(dev->def_ep_desc.wMaxPacketSize, dd->bMaxPacketSize);
err = usbd_reload_device_desc(dev);
if (err) {
DPRINTFN(-1, ("usbd_new_device: addr=%d, getting full desc "
"failed\n", addr));
usbd_remove_device(dev, up);
return (err);
}
/* Assume 100mA bus powered for now. Changed when configured. */
dev->power = USB_MIN_POWER;
dev->self_powered = 0;
DPRINTF(("usbd_new_device: new dev (addr %d), dev=%p, parent=%p\n",
addr, dev, parent));
err = usbd_probe_and_attach(parent, dev, port, addr);
if (err) {
usbd_remove_device(dev, up);
return (err);
}
usbd_add_dev_event(USB_EVENT_DEVICE_ATTACH, dev);
return (USBD_NORMAL_COMPLETION);
}
