void mtu3_dev_on_off(struct mtu3 *mtu, int is_on)
{
if (mtu->is_u3_ip && mtu->max_speed >= USB_SPEED_SUPER)
mtu3_ss_func_set(mtu, is_on);
else
mtu3_hs_softconn_set(mtu, is_on);
dev_info(mtu->dev, "gadget (%s) pullup D%s\n",
usb_speed_string(mtu->max_speed), is_on ? "+" : "-");
}
static void usbip_dump_usb_device(struct usb_device *udev)
{
struct device *dev = &udev->dev;
int i;
dev_dbg(dev, " devnum(%d) devpath(%s) usb speed(%s)",
udev->devnum, udev->devpath, usb_speed_string(udev->speed));
pr_debug("tt %p, ttport %d\n", udev->tt, udev->ttport);
dev_dbg(dev, " ");
for (i = 0; i < 16; i++)
pr_debug(" %2u", i);
pr_debug("\n");
dev_dbg(dev, " toggle0(IN) :");
for (i = 0; i < 16; i++)
pr_debug(" %2u", (udev->toggle[0] & (1 << i)) ? 1 : 0);
pr_debug("\n");
dev_dbg(dev, " toggle1(OUT):");
for (i = 0; i < 16; i++)
pr_debug(" %2u", (udev->toggle[1] & (1 << i)) ? 1 : 0);
pr_debug("\n");
dev_dbg(dev, " epmaxp_in :");
for (i = 0; i < 16; i++) {
if (udev->ep_in[i])
pr_debug(" %2u",
le16_to_cpu(udev->ep_in[i]->desc.wMaxPacketSize));
}
pr_debug("\n");
dev_dbg(dev, " epmaxp_out :");
for (i = 0; i < 16; i++) {
if (udev->ep_out[i])
pr_debug(" %2u",
le16_to_cpu(udev->ep_out[i]->desc.wMaxPacketSize));
}
pr_debug("\n");
dev_dbg(dev, "parent %p, bus %p\n", udev->parent, udev->bus);
dev_dbg(dev,
"descriptor %p, config %p, actconfig %p, rawdescriptors %p\n",
&udev->descriptor, udev->config,
udev->actconfig, udev->rawdescriptors);
dev_dbg(dev, "have_langid %d, string_langid %d\n",
udev->have_langid, udev->string_langid);
dev_dbg(dev, "maxchild %d\n", udev->maxchild);
}
static int valid_args(__u32 pdev_nr, __u32 rhport, enum usb_device_speed speed)
{
if (!valid_port(pdev_nr, rhport)) {
return 0;
}
switch (speed) {
case USB_SPEED_LOW:
case USB_SPEED_FULL:
case USB_SPEED_HIGH:
case USB_SPEED_WIRELESS:
break;
default:
pr_err("Failed attach request for unsupported USB speed: %s\n",
usb_speed_string(speed));
return 0;
}
return 1;
}
/* Sysfs entry to establish a virtual connection */
static int valid_args(__u32 rhport, enum usb_device_speed speed)
{
/* check rhport */
if (rhport >= VHCI_NPORTS) {
pr_err("port %u\n", rhport);
return -EINVAL;
}
/* check speed */
switch (speed) {
case USB_SPEED_LOW:
case USB_SPEED_FULL:
case USB_SPEED_HIGH:
case USB_SPEED_WIRELESS:
break;
default:
pr_err("Failed attach request for unsupported USB speed: %s\n",
usb_speed_string(speed));
return -EINVAL;
}
return 0;
}
/*
* To start a new USB/IP attachment, a userland program needs to setup a TCP
* connection and then write its socket descriptor with remote device
* information into this sysfs file.
*
* A remote device is virtually attached to the root-hub port of @rhport with
* @speed. @devid is embedded into a request to specify the remote device in a
* server host.
*
* write() returns 0 on success, else negative errno.
*/
static ssize_t store_attach(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct socket *socket;
int sockfd = 0;
__u32 port = 0, pdev_nr = 0, rhport = 0, devid = 0, speed = 0;
struct usb_hcd *hcd;
struct vhci_hcd *vhci_hcd;
struct vhci_device *vdev;
struct vhci *vhci;
int err;
unsigned long flags;
/*
* @rhport: port number of vhci_hcd
* @sockfd: socket descriptor of an established TCP connection
* @devid: unique device identifier in a remote host
* @speed: usb device speed in a remote host
*/
if (sscanf(buf, "%u %u %u %u", &port, &sockfd, &devid, &speed) != 4)
return -EINVAL;
pdev_nr = port_to_pdev_nr(port);
rhport = port_to_rhport(port);
usbip_dbg_vhci_sysfs("port(%u) pdev(%d) rhport(%u)\n",
port, pdev_nr, rhport);
usbip_dbg_vhci_sysfs("sockfd(%u) devid(%u) speed(%u)\n",
sockfd, devid, speed);
/* check received parameters */
if (!valid_args(pdev_nr, rhport, speed))
return -EINVAL;
hcd = platform_get_drvdata(vhcis[pdev_nr].pdev);
if (hcd == NULL) {
dev_err(dev, "port %d is not ready\n", port);
return -EAGAIN;
}
vhci_hcd = hcd_to_vhci_hcd(hcd);
vhci = vhci_hcd->vhci;
if (speed == USB_SPEED_SUPER)
vdev = &vhci->vhci_hcd_ss->vdev[rhport];
else
vdev = &vhci->vhci_hcd_hs->vdev[rhport];
/* Extract socket from fd. */
socket = sockfd_lookup(sockfd, &err);
if (!socket)
return -EINVAL;
/* now need lock until setting vdev status as used */
/* begin a lock */
spin_lock_irqsave(&vhci->lock, flags);
spin_lock(&vdev->ud.lock);
if (vdev->ud.status != VDEV_ST_NULL) {
/* end of the lock */
spin_unlock(&vdev->ud.lock);
spin_unlock_irqrestore(&vhci->lock, flags);
sockfd_put(socket);
dev_err(dev, "port %d already used\n", rhport);
return -EINVAL;
}
dev_info(dev, "pdev(%u) rhport(%u) sockfd(%d)\n",
pdev_nr, rhport, sockfd);
dev_info(dev, "devid(%u) speed(%u) speed_str(%s)\n",
devid, speed, usb_speed_string(speed));
vdev->devid = devid;
vdev->speed = speed;
vdev->ud.tcp_socket = socket;
vdev->ud.status = VDEV_ST_NOTASSIGNED;
spin_unlock(&vdev->ud.lock);
spin_unlock_irqrestore(&vhci->lock, flags);
/* end the lock */
vdev->ud.tcp_rx = kthread_get_run(vhci_rx_loop, &vdev->ud, "vhci_rx");
vdev->ud.tcp_tx = kthread_get_run(vhci_tx_loop, &vdev->ud, "vhci_tx");
rh_port_connect(vdev, speed);
return count;
}
/*
* To start a new USB/IP attachment, a userland program needs to setup a TCP
* connection and then write its socket descriptor with remote device
* information into this sysfs file.
*
* A remote device is virtually attached to the root-hub port of @rhport with
* @speed. @devid is embedded into a request to specify the remote device in a
* server host.
*
* write() returns 0 on success, else negative errno.
*/
static ssize_t store_attach(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct vhci_device *vdev;
struct socket *socket;
int sockfd = 0;
__u32 rhport = 0, devid = 0, speed = 0;
int err;
/*
* @rhport: port number of vhci_hcd
* @sockfd: socket descriptor of an established TCP connection
* @devid: unique device identifier in a remote host
* @speed: usb device speed in a remote host
*/
if (sscanf(buf, "%u %u %u %u", &rhport, &sockfd, &devid, &speed) != 4)
return -EINVAL;
usbip_dbg_vhci_sysfs("rhport(%u) sockfd(%u) devid(%u) speed(%u)\n",
rhport, sockfd, devid, speed);
/* check received parameters */
if (valid_args(rhport, speed) < 0)
return -EINVAL;
/* Extract socket from fd. */
socket = sockfd_lookup(sockfd, &err);
if (!socket)
return -EINVAL;
/* now need lock until setting vdev status as used */
/* begin a lock */
spin_lock(&the_controller->lock);
vdev = port_to_vdev(rhport);
spin_lock(&vdev->ud.lock);
if (vdev->ud.status != VDEV_ST_NULL) {
/* end of the lock */
spin_unlock(&vdev->ud.lock);
spin_unlock(&the_controller->lock);
sockfd_put(socket);
dev_err(dev, "port %d already used\n", rhport);
return -EINVAL;
}
dev_info(dev,
"rhport(%u) sockfd(%d) devid(%u) speed(%u) speed_str(%s)\n",
rhport, sockfd, devid, speed, usb_speed_string(speed));
vdev->devid = devid;
vdev->speed = speed;
vdev->ud.tcp_socket = socket;
vdev->ud.status = VDEV_ST_NOTASSIGNED;
spin_unlock(&vdev->ud.lock);
spin_unlock(&the_controller->lock);
/* end the lock */
vdev->ud.tcp_rx = kthread_get_run(vhci_rx_loop, &vdev->ud, "vhci_rx");
vdev->ud.tcp_tx = kthread_get_run(vhci_tx_loop, &vdev->ud, "vhci_tx");
rh_port_connect(rhport, speed);
return count;
}
