static void dwc3_ep0_complete_data(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_request *r = NULL;
struct usb_request *ur;
struct dwc3_trb *trb;
struct dwc3_ep *ep0;
unsigned maxp;
unsigned remaining_ur_length;
void *buf;
u32 transferred = 0;
u32 status;
u32 length;
u8 epnum;
epnum = event->endpoint_number;
ep0 = dwc->eps[0];
dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS;
trb = dwc->ep0_trb;
trace_dwc3_complete_trb(ep0, trb);
r = next_request(&ep0->pending_list);
if (!r)
return;
status = DWC3_TRB_SIZE_TRBSTS(trb->size);
if (status == DWC3_TRBSTS_SETUP_PENDING) {
dwc->setup_packet_pending = true;
if (r)
dwc3_gadget_giveback(ep0, r, -ECONNRESET);
return;
}
ur = &r->request;
buf = ur->buf;
remaining_ur_length = ur->length;
length = trb->size & DWC3_TRB_SIZE_MASK;
maxp = ep0->endpoint.maxpacket;
transferred = ur->length - length;
ur->actual += transferred;
if ((IS_ALIGNED(ur->length, ep0->endpoint.maxpacket) &&
ur->length && ur->zero) || dwc->ep0_bounced) {
trb++;
trb->ctrl &= ~DWC3_TRB_CTRL_HWO;
trace_dwc3_complete_trb(ep0, trb);
ep0->trb_enqueue = 0;
dwc->ep0_bounced = false;
}
if ((epnum & 1) && ur->actual < ur->length)
dwc3_ep0_stall_and_restart(dwc);
else
dwc3_gadget_giveback(ep0, r, 0);
}
static void dwc3_ep0_complete_status(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_request *r;
struct dwc3_ep *dep;
struct dwc3_trb *trb;
u32 status;
dep = dwc->eps[0];
trb = dwc->ep0_trb;
trace_dwc3_complete_trb(dep, trb);
if (!list_empty(&dep->request_list)) {
r = next_request(&dep->request_list);
dwc3_gadget_giveback(dep, r, 0);
}
if (dwc->test_mode) {
int ret;
ret = dwc3_gadget_set_test_mode(dwc, dwc->test_mode_nr);
if (ret < 0) {
dwc3_trace(trace_dwc3_ep0, "Invalid Test #%d",
dwc->test_mode_nr);
dwc3_ep0_stall_and_restart(dwc);
return;
}
}
status = DWC3_TRB_SIZE_TRBSTS(trb->size);
if (status == DWC3_TRBSTS_SETUP_PENDING) {
dwc->setup_packet_pending = true;
dwc3_trace(trace_dwc3_ep0, "Setup Pending received");
}
dwc->ep0state = EP0_SETUP_PHASE;
dwc3_ep0_out_start(dwc);
}
static void dwc3_ep0_complete_status(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_request *r;
struct dwc3_ep *dep;
struct dwc3_trb *trb;
u32 status;
dep = dwc->eps[0];
trb = dwc->ep0_trb;
if (!list_empty(&dep->request_list)) {
r = next_request(&dep->request_list);
dwc3_gadget_giveback(dep, r, 0);
}
if (dwc->test_mode) {
int ret;
ret = dwc3_gadget_set_test_mode(dwc, dwc->test_mode_nr);
if (ret < 0) {
dev_dbg(dwc->dev, "Invalid Test #%d\n",
dwc->test_mode_nr);
dbg_event(0x00, "INVALTEST", ret);
dwc3_ep0_stall_and_restart(dwc);
return;
}
}
status = DWC3_TRB_SIZE_TRBSTS(trb->size);
if (status == DWC3_TRBSTS_SETUP_PENDING)
dev_dbg(dwc->dev, "Setup Pending received\n");
dbg_print(dep->number, "DONE", status, "STATUS");
dwc->ep0state = EP0_SETUP_PHASE;
dwc3_ep0_out_start(dwc);
}
static void dwc3_ep0_complete_data(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_request *r = NULL;
struct usb_request *ur;
struct dwc3_trb *trb;
struct dwc3_ep *ep0;
u32 transferred;
u32 status;
u32 length;
u8 epnum;
epnum = event->endpoint_number;
ep0 = dwc->eps[0];
dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS;
trb = dwc->ep0_trb;
r = next_request(&ep0->request_list);
if (!r)
return;
status = DWC3_TRB_SIZE_TRBSTS(trb->size);
if (status == DWC3_TRBSTS_SETUP_PENDING) {
dev_dbg(dwc->dev, "Setup Pending received\n");
if (r)
dwc3_gadget_giveback(ep0, r, -ECONNRESET);
return;
}
if (dwc->ep0_zlp_sent)
goto finish_zlp;
ur = &r->request;
length = trb->size & DWC3_TRB_SIZE_MASK;
if (dwc->ep0_bounced) {
unsigned transfer_size = ur->length;
unsigned maxp = ep0->endpoint.maxpacket;
transfer_size += (maxp - (transfer_size % maxp));
transferred = min_t(u32, ur->length,
transfer_size - length);
memcpy(ur->buf, dwc->ep0_bounce, transferred);
} else {
transferred = ur->length - length;
}
ur->actual += transferred;
if ((epnum & 1) && ur->actual < ur->length) {
/* for some reason we did not get everything out */
dwc3_ep0_stall_and_restart(dwc);
return;
}
/* handle the case where we have to send a zero packet */
if ((epnum & 1) && ur->zero &&
(ur->length % ep0->endpoint.maxpacket == 0)) {
int ret;
ret = dwc3_ep0_start_trans(dwc, epnum, dwc->ctrl_req_addr, 0,
DWC3_TRBCTL_CONTROL_DATA);
WARN_ON(ret < 0);
dwc->ep0_zlp_sent = 1;
return;
}
finish_zlp:
dwc3_gadget_giveback(ep0, r, 0);
}
static void dwc3_ep0_complete_data(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_request *r = NULL;
struct usb_request *ur;
struct dwc3_trb *trb;
struct dwc3_ep *ep0;
u32 transferred;
u32 status;
u32 length;
u8 epnum;
epnum = event->endpoint_number;
ep0 = dwc->eps[0];
dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS;
r = next_request(&ep0->request_list);
ur = &r->request;
trb = dwc->ep0_trb;
status = DWC3_TRB_SIZE_TRBSTS(trb->size);
if (status == DWC3_TRBSTS_SETUP_PENDING) {
dev_dbg(dwc->dev, "Setup Pending received\n");
if (r)
dwc3_gadget_giveback(ep0, r, -ECONNRESET);
return;
}
length = trb->size & DWC3_TRB_SIZE_MASK;
if (dwc->ep0_bounced) {
unsigned transfer_size = ur->length;
unsigned maxp = ep0->endpoint.maxpacket;
transfer_size += (maxp - (transfer_size % maxp));
transferred = min_t(u32, ur->length,
transfer_size - length);
memcpy(ur->buf, dwc->ep0_bounce, transferred);
} else {
transferred = ur->length - length;
}
ur->actual += transferred;
if ((epnum & 1) && ur->actual < ur->length) {
/* for some reason we did not get everything out */
dwc3_ep0_stall_and_restart(dwc);
} else {
/*
* handle the case where we have to send a zero packet. This
* seems to be case when req.length > maxpacket. Could it be?
*/
if (r)
dwc3_gadget_giveback(ep0, r, 0);
}
}
static void dwc3_ep0_complete_data(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_request *r = NULL;
struct usb_request *ur;
struct dwc3_trb *trb;
struct dwc3_ep *ep0;
unsigned transfer_size = 0;
unsigned maxp;
unsigned remaining_ur_length;
void *buf;
u32 transferred = 0;
u32 status;
u32 length;
u8 epnum;
epnum = event->endpoint_number;
ep0 = dwc->eps[0];
dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS;
trb = dwc->ep0_trb;
trace_dwc3_complete_trb(ep0, trb);
r = next_request(&ep0->request_list);
if (!r)
return;
status = DWC3_TRB_SIZE_TRBSTS(trb->size);
if (status == DWC3_TRBSTS_SETUP_PENDING) {
dwc->setup_packet_pending = true;
dwc3_trace(trace_dwc3_ep0, "Setup Pending received");
if (r)
dwc3_gadget_giveback(ep0, r, -ECONNRESET);
return;
}
ur = &r->request;
buf = ur->buf;
remaining_ur_length = ur->length;
length = trb->size & DWC3_TRB_SIZE_MASK;
maxp = ep0->endpoint.maxpacket;
if (dwc->ep0_bounced) {
/*
* Handle the first TRB before handling the bounce buffer if
* the request length is greater than the bounce buffer size
*/
if (ur->length > DWC3_EP0_BOUNCE_SIZE) {
transfer_size = ALIGN(ur->length - maxp, maxp);
transferred = transfer_size - length;
buf = (u8 *)buf + transferred;
ur->actual += transferred;
remaining_ur_length -= transferred;
trb++;
length = trb->size & DWC3_TRB_SIZE_MASK;
ep0->free_slot = 0;
}
transfer_size = roundup((ur->length - transfer_size),
maxp);
transferred = min_t(u32, remaining_ur_length,
transfer_size - length);
memcpy(buf, dwc->ep0_bounce, transferred);
} else {
transferred = ur->length - length;
}
ur->actual += transferred;
if ((epnum & 1) && ur->actual < ur->length) {
/* for some reason we did not get everything out */
dwc3_ep0_stall_and_restart(dwc);
} else {
dwc3_gadget_giveback(ep0, r, 0);
if (IS_ALIGNED(ur->length, ep0->endpoint.maxpacket) &&
ur->length && ur->zero) {
int ret;
dwc->ep0_next_event = DWC3_EP0_COMPLETE;
ret = dwc3_ep0_start_trans(dwc, epnum,
dwc->ctrl_req_addr, 0,
DWC3_TRBCTL_CONTROL_DATA, false);
WARN_ON(ret < 0);
}
}
}