int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
gfp_t gfp_flags)
{
struct dwc3_request *req = to_dwc3_request(request);
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
int ret;
if (!dep->desc) {
dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n",
request, dep->name);
ret = -ESHUTDOWN;
goto out;
}
/* we share one TRB for ep0/1 */
if (!list_empty(&dep->request_list)) {
ret = -EBUSY;
goto out;
}
dev_vdbg(dwc->dev, "queueing request %p to %s length %d, state '%s'\n",
request, dep->name, request->length,
dwc3_ep0_state_string(dwc->ep0state));
ret = __dwc3_gadget_ep0_queue(dep, req);
out:
return ret;
}
static int dwc3_ep0_set_sel(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
{
struct dwc3_ep *dep;
enum usb_device_state state = dwc->gadget.state;
u16 wLength;
u16 wValue;
if (state == USB_STATE_DEFAULT)
return -EINVAL;
wValue = le16_to_cpu(ctrl->wValue);
wLength = le16_to_cpu(ctrl->wLength);
if (wLength != 6) {
dev_err(dwc->dev, "Set SEL should be 6 bytes, got %d\n",
wLength);
return -EINVAL;
}
/*
* To handle Set SEL we need to receive 6 bytes from Host. So let's
* queue a usb_request for 6 bytes.
*
* Remember, though, this controller can't handle non-wMaxPacketSize
* aligned transfers on the OUT direction, so we queue a request for
* wMaxPacketSize instead.
*/
dep = dwc->eps[0];
dwc->ep0_usb_req.dep = dep;
dwc->ep0_usb_req.request.length = dep->endpoint.maxpacket;
dwc->ep0_usb_req.request.buf = dwc->setup_buf;
dwc->ep0_usb_req.request.complete = dwc3_ep0_set_sel_cmpl;
return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req);
}
int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
gfp_t gfp_flags)
{
struct dwc3_request *req = to_dwc3_request(request);
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
int ret;
spin_lock_irqsave(&dwc->lock, flags);
if (!dep->endpoint.desc) {
dev_err(dwc->dev, "%s: can't queue to disabled endpoint\n",
dep->name);
ret = -ESHUTDOWN;
goto out;
}
/* we share one TRB for ep0/1 */
if (!list_empty(&dep->pending_list)) {
ret = -EBUSY;
goto out;
}
ret = __dwc3_gadget_ep0_queue(dep, req);
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
}
/*
* ch 9.4.5
*/
static int dwc3_ep0_handle_status(struct dwc3 *dwc,
struct usb_ctrlrequest *ctrl)
{
struct dwc3_ep *dep;
u32 recip;
u32 reg;
u16 usb_status = 0;
__le16 *response_pkt;
recip = ctrl->bRequestType & USB_RECIP_MASK;
switch (recip) {
case USB_RECIP_DEVICE:
/*
* LTM will be set once we know how to set this in HW.
*/
usb_status |= dwc->gadget.is_selfpowered;
if ((dwc->speed == DWC3_DSTS_SUPERSPEED) ||
(dwc->speed == DWC3_DSTS_SUPERSPEED_PLUS)) {
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
if (reg & DWC3_DCTL_INITU1ENA)
usb_status |= 1 << USB_DEV_STAT_U1_ENABLED;
if (reg & DWC3_DCTL_INITU2ENA)
usb_status |= 1 << USB_DEV_STAT_U2_ENABLED;
}
break;
case USB_RECIP_INTERFACE:
/*
* Function Remote Wake Capable D0
* Function Remote Wakeup D1
*/
break;
case USB_RECIP_ENDPOINT:
dep = dwc3_wIndex_to_dep(dwc, ctrl->wIndex);
if (!dep)
return -EINVAL;
if (dep->flags & DWC3_EP_STALL)
usb_status = 1 << USB_ENDPOINT_HALT;
break;
default:
return -EINVAL;
}
response_pkt = (__le16 *) dwc->setup_buf;
*response_pkt = cpu_to_le16(usb_status);
dep = dwc->eps[0];
dwc->ep0_usb_req.dep = dep;
dwc->ep0_usb_req.request.length = sizeof(*response_pkt);
dwc->ep0_usb_req.request.buf = dwc->setup_buf;
dwc->ep0_usb_req.request.complete = dwc3_ep0_status_cmpl;
return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req);
}
int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
gfp_t gfp_flags)
{
struct dwc3_request *req = to_dwc3_request(request);
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
int ret;
switch (dwc->ep0state) {
case EP0_IN_DATA_PHASE:
case EP0_IN_WAIT_GADGET:
case EP0_IN_WAIT_NRDY:
case EP0_IN_STATUS_PHASE:
dep = dwc->eps[1];
break;
case EP0_OUT_DATA_PHASE:
case EP0_OUT_WAIT_GADGET:
case EP0_OUT_WAIT_NRDY:
case EP0_OUT_STATUS_PHASE:
dep = dwc->eps[0];
break;
default:
return -EINVAL;
}
spin_lock_irqsave(&dwc->lock, flags);
if (!dep->desc) {
dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n",
request, dep->name);
ret = -ESHUTDOWN;
goto out;
}
/* we share one TRB for ep0/1 */
if (!list_empty(&dwc->eps[0]->request_list) ||
!list_empty(&dwc->eps[1]->request_list) ||
dwc->ep0_status_pending) {
ret = -EBUSY;
goto out;
}
dev_vdbg(dwc->dev, "queueing request %p to %s length %d, state '%s'\n",
request, dep->name, request->length,
dwc3_ep0_state_string(dwc->ep0state));
ret = __dwc3_gadget_ep0_queue(dep, req);
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
}
/*
* ch 9.4.5
*/
static int dwc3_ep0_handle_status(struct dwc3 *dwc,
struct usb_ctrlrequest *ctrl)
{
struct dwc3_ep *dep;
u32 recip;
u16 usb_status = 0;
__le16 *response_pkt;
recip = ctrl->bRequestType & USB_RECIP_MASK;
switch (recip) {
case USB_RECIP_DEVICE:
/*
* We are self-powered. U1/U2/LTM will be set later
* once we handle this states. RemoteWakeup is 0 on SS
*/
usb_status |= dwc->is_selfpowered << USB_DEVICE_SELF_POWERED;
break;
case USB_RECIP_INTERFACE:
/*
* Function Remote Wake Capable D0
* Function Remote Wakeup D1
*/
break;
case USB_RECIP_ENDPOINT:
dep = dwc3_wIndex_to_dep(dwc, ctrl->wIndex);
if (!dep)
return -EINVAL;
if (dep->flags & DWC3_EP_STALL)
usb_status = 1 << USB_ENDPOINT_HALT;
break;
default:
return -EINVAL;
};
response_pkt = (__le16 *) dwc->setup_buf;
*response_pkt = cpu_to_le16(usb_status);
dep = dwc->eps[0];
dwc->ep0_usb_req.dep = dep;
dwc->ep0_usb_req.request.length = sizeof(*response_pkt);
dwc->ep0_usb_req.request.dma = dwc->setup_buf_addr;
dwc->ep0_usb_req.request.complete = dwc3_ep0_status_cmpl;
return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req);
}
int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
gfp_t gfp_flags)
{
struct dwc3_request *req = to_dwc3_request(request);
struct dwc3_ep *dep = to_dwc3_ep(ep);
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
int ret;
spin_lock_irqsave(&dwc->lock, flags);
if (!dep->endpoint.desc) {
dwc3_trace(trace_dwc3_ep0,
"trying to queue request %p to disabled %s",
request, dep->name);
ret = -ESHUTDOWN;
goto out;
}
/* we share one TRB for ep0/1 */
if (!list_empty(&dep->request_list)) {
ret = -EBUSY;
goto out;
}
dwc3_trace(trace_dwc3_ep0,
"queueing request %p to %s length %d state '%s'",
request, dep->name, request->length,
dwc3_ep0_state_string(dwc->ep0state));
ret = __dwc3_gadget_ep0_queue(dep, req);
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
}
