/*------------------------------------------------------------------------*
* usb_handle_stall
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
static usb_error_t
usb_handle_set_stall(struct usb_xfer *xfer, uint8_t ep, uint8_t do_stall)
{
struct usb_device *udev = xfer->xroot->udev;
usb_error_t err;
USB_XFER_UNLOCK(xfer);
err = usbd_set_endpoint_stall(udev,
usbd_get_ep_by_addr(udev, ep), do_stall);
USB_XFER_LOCK(xfer);
return (err);
}
/*------------------------------------------------------------------------*
* usb_handle_get_stall
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
static uint8_t
usb_handle_get_stall(struct usb_device *udev, uint8_t ea_val)
{
struct usb_endpoint *ep;
uint8_t halted;
ep = usbd_get_ep_by_addr(udev, ea_val);
if (ep == NULL) {
/* nothing to do */
return (0);
}
USB_BUS_LOCK(udev->bus);
halted = ep->is_stalled;
USB_BUS_UNLOCK(udev->bus);
return (halted);
}
/*------------------------------------------------------------------------*
* ugen_check_request
*
* Return values:
* 0: Access allowed
* Else: No access
*------------------------------------------------------------------------*/
static int
ugen_check_request(struct usb_device *udev, struct usb_device_request *req)
{
struct usb_endpoint *ep;
int error;
/*
* Avoid requests that would damage the bus integrity:
*/
if (((req->bmRequestType == UT_WRITE_DEVICE) &&
(req->bRequest == UR_SET_ADDRESS)) ||
((req->bmRequestType == UT_WRITE_DEVICE) &&
(req->bRequest == UR_SET_CONFIG)) ||
((req->bmRequestType == UT_WRITE_INTERFACE) &&
(req->bRequest == UR_SET_INTERFACE))) {
/*
* These requests can be useful for testing USB drivers.
*/
error = priv_check(curthread, PRIV_DRIVER);
if (error) {
return (error);
}
}
/*
* Special case - handle clearing of stall
*/
if (req->bmRequestType == UT_WRITE_ENDPOINT) {
ep = usbd_get_ep_by_addr(udev, req->wIndex[0]);
if (ep == NULL) {
return (EINVAL);
}
if ((req->bRequest == UR_CLEAR_FEATURE) &&
(UGETW(req->wValue) == UF_ENDPOINT_HALT)) {
usbd_clear_data_toggle(udev, ep);
}
}
/* TODO: add more checks to verify the interface index */
return (0);
}
static int
ugen_ioctl(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
{
struct usb_config usb_config[1];
struct usb_device_request req;
union {
struct usb_fs_complete *pcomp;
struct usb_fs_start *pstart;
struct usb_fs_stop *pstop;
struct usb_fs_open *popen;
struct usb_fs_close *pclose;
struct usb_fs_clear_stall_sync *pstall;
void *addr;
} u;
struct usb_endpoint *ep;
struct usb_endpoint_descriptor *ed;
int error = 0;
uint8_t iface_index;
uint8_t isread;
uint8_t ep_index;
u.addr = addr;
DPRINTFN(6, "cmd=0x%08lx\n", cmd);
switch (cmd) {
case USB_FS_COMPLETE:
mtx_lock(f->priv_mtx);
error = ugen_fs_get_complete(f, &ep_index);
mtx_unlock(f->priv_mtx);
if (error) {
error = EBUSY;
break;
}
u.pcomp->ep_index = ep_index;
error = ugen_fs_copy_out(f, u.pcomp->ep_index);
break;
case USB_FS_START:
error = ugen_fs_copy_in(f, u.pstart->ep_index);
if (error) {
break;
}
mtx_lock(f->priv_mtx);
usbd_transfer_start(f->fs_xfer[u.pstart->ep_index]);
mtx_unlock(f->priv_mtx);
break;
case USB_FS_STOP:
if (u.pstop->ep_index >= f->fs_ep_max) {
error = EINVAL;
break;
}
mtx_lock(f->priv_mtx);
usbd_transfer_stop(f->fs_xfer[u.pstop->ep_index]);
mtx_unlock(f->priv_mtx);
break;
case USB_FS_OPEN:
if (u.popen->ep_index >= f->fs_ep_max) {
error = EINVAL;
break;
}
if (f->fs_xfer[u.popen->ep_index] != NULL) {
error = EBUSY;
break;
}
if (u.popen->max_bufsize > USB_FS_MAX_BUFSIZE) {
u.popen->max_bufsize = USB_FS_MAX_BUFSIZE;
}
if (u.popen->max_frames > USB_FS_MAX_FRAMES) {
u.popen->max_frames = USB_FS_MAX_FRAMES;
break;
}
if (u.popen->max_frames == 0) {
error = EINVAL;
break;
}
ep = usbd_get_ep_by_addr(f->udev, u.popen->ep_no);
if (ep == NULL) {
error = EINVAL;
break;
}
ed = ep->edesc;
if (ed == NULL) {
error = ENXIO;
break;
}
iface_index = ep->iface_index;
bzero(usb_config, sizeof(usb_config));
usb_config[0].type = ed->bmAttributes & UE_XFERTYPE;
usb_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
usb_config[0].direction = ed->bEndpointAddress & (UE_DIR_OUT | UE_DIR_IN);
usb_config[0].interval = USB_DEFAULT_INTERVAL;
usb_config[0].flags.proxy_buffer = 1;
usb_config[0].callback = &ugen_default_fs_callback;
usb_config[0].timeout = 0; /* no timeout */
usb_config[0].frames = u.popen->max_frames;
usb_config[0].bufsize = u.popen->max_bufsize;
usb_config[0].usb_mode = USB_MODE_DUAL; /* both modes */
if (usb_config[0].type == UE_CONTROL) {
if (f->udev->flags.usb_mode != USB_MODE_HOST) {
error = EINVAL;
break;
}
} else {
isread = ((usb_config[0].endpoint &
(UE_DIR_IN | UE_DIR_OUT)) == UE_DIR_IN);
if (f->udev->flags.usb_mode != USB_MODE_HOST) {
isread = !isread;
}
/* check permissions */
if (isread) {
if (!(fflags & FREAD)) {
error = EPERM;
break;
}
} else {
if (!(fflags & FWRITE)) {
error = EPERM;
break;
}
}
}
error = usbd_transfer_setup(f->udev, &iface_index,
f->fs_xfer + u.popen->ep_index, usb_config, 1,
f, f->priv_mtx);
if (error == 0) {
/* update maximums */
u.popen->max_packet_length =
f->fs_xfer[u.popen->ep_index]->max_frame_size;
u.popen->max_bufsize =
f->fs_xfer[u.popen->ep_index]->max_data_length;
f->fs_xfer[u.popen->ep_index]->priv_fifo =
((uint8_t *)0) + u.popen->ep_index;
} else {
error = ENOMEM;
}
break;
case USB_FS_CLOSE:
if (u.pclose->ep_index >= f->fs_ep_max) {
error = EINVAL;
break;
}
if (f->fs_xfer[u.pclose->ep_index] == NULL) {
error = EINVAL;
break;
}
usbd_transfer_unsetup(f->fs_xfer + u.pclose->ep_index, 1);
break;
case USB_FS_CLEAR_STALL_SYNC:
if (u.pstall->ep_index >= f->fs_ep_max) {
error = EINVAL;
break;
}
if (f->fs_xfer[u.pstall->ep_index] == NULL) {
error = EINVAL;
break;
}
if (f->udev->flags.usb_mode != USB_MODE_HOST) {
error = EINVAL;
break;
}
mtx_lock(f->priv_mtx);
error = usbd_transfer_pending(f->fs_xfer[u.pstall->ep_index]);
mtx_unlock(f->priv_mtx);
if (error) {
return (EBUSY);
}
ep = f->fs_xfer[u.pstall->ep_index]->endpoint;
/* setup a clear-stall packet */
req.bmRequestType = UT_WRITE_ENDPOINT;
req.bRequest = UR_CLEAR_FEATURE;
USETW(req.wValue, UF_ENDPOINT_HALT);
req.wIndex[0] = ep->edesc->bEndpointAddress;
req.wIndex[1] = 0;
USETW(req.wLength, 0);
error = usbd_do_request(f->udev, NULL, &req, NULL);
if (error == 0) {
usbd_clear_data_toggle(f->udev, ep);
} else {
error = ENXIO;
}
break;
default:
error = ENOIOCTL;
break;
}
DPRINTFN(6, "error=%d\n", error);
return (error);
}
