Lines Matching refs:ep
95 static void gr_dbgprint_request(const char *str, struct gr_ep *ep, in gr_dbgprint_request() argument
98 int buflen = ep->is_in ? req->req.length : req->req.actual; in gr_dbgprint_request()
102 dev_dbg(ep->dev->dev, "%s: 0x%p, %d bytes data%s:\n", str, req, buflen, in gr_dbgprint_request()
116 static void gr_dbgprint_request(const char *str, struct gr_ep *ep, in gr_dbgprint_request() argument
129 static void gr_seq_ep_show(struct seq_file *seq, struct gr_ep *ep) in gr_seq_ep_show() argument
131 u32 epctrl = gr_read32(&ep->regs->epctrl); in gr_seq_ep_show()
132 u32 epstat = gr_read32(&ep->regs->epstat); in gr_seq_ep_show()
136 seq_printf(seq, "%s:\n", ep->ep.name); in gr_seq_ep_show()
141 seq_printf(seq, " dma_start = %d\n", ep->dma_start); in gr_seq_ep_show()
142 seq_printf(seq, " stopped = %d\n", ep->stopped); in gr_seq_ep_show()
143 seq_printf(seq, " wedged = %d\n", ep->wedged); in gr_seq_ep_show()
144 seq_printf(seq, " callback = %d\n", ep->callback); in gr_seq_ep_show()
145 seq_printf(seq, " maxpacket = %d\n", ep->ep.maxpacket); in gr_seq_ep_show()
146 seq_printf(seq, " maxpacket_limit = %d\n", ep->ep.maxpacket_limit); in gr_seq_ep_show()
147 seq_printf(seq, " bytes_per_buffer = %d\n", ep->bytes_per_buffer); in gr_seq_ep_show()
161 if (list_empty(&ep->queue)) { in gr_seq_ep_show()
167 list_for_each_entry(req, &ep->queue, queue) { in gr_seq_ep_show()
192 struct gr_ep *ep; in gr_seq_show() local
205 list_for_each_entry(ep, &dev->ep_list, ep_list) in gr_seq_show()
206 gr_seq_ep_show(seq, ep); in gr_seq_show()
251 static struct gr_dma_desc *gr_alloc_dma_desc(struct gr_ep *ep, gfp_t gfp_flags) in gr_alloc_dma_desc() argument
256 dma_desc = dma_pool_alloc(ep->dev->desc_pool, gfp_flags, &paddr); in gr_alloc_dma_desc()
258 dev_err(ep->dev->dev, "Could not allocate from DMA pool\n"); in gr_alloc_dma_desc()
303 static void gr_finish_request(struct gr_ep *ep, struct gr_request *req, in gr_finish_request() argument
317 dev = ep->dev; in gr_finish_request()
318 usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in); in gr_finish_request()
321 if (ep->is_in) { /* For OUT, req->req.actual gets updated bit by bit */ in gr_finish_request()
331 memcpy(buftail, ep->tailbuf, req->oddlen); in gr_finish_request()
335 dev_dbg(ep->dev->dev, "Overflow for ep %s\n", in gr_finish_request()
336 ep->ep.name); in gr_finish_request()
337 gr_dbgprint_request("OVFL", ep, req); in gr_finish_request()
343 if (ep->is_in) in gr_finish_request()
344 gr_dbgprint_request("SENT", ep, req); in gr_finish_request()
346 gr_dbgprint_request("RECV", ep, req); in gr_finish_request()
350 ep->callback = 1; in gr_finish_request()
360 usb_gadget_giveback_request(&ep->ep, &req->req); in gr_finish_request()
364 ep->callback = 0; in gr_finish_request()
385 static void gr_start_dma(struct gr_ep *ep) in gr_start_dma() argument
390 if (list_empty(&ep->queue)) { in gr_start_dma()
391 ep->dma_start = 0; in gr_start_dma()
395 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_start_dma()
406 if (!ep->is_in && req->oddlen) in gr_start_dma()
407 req->last_desc->data = ep->tailbuf_paddr; in gr_start_dma()
412 gr_write32(&ep->regs->dmaaddr, req->curr_desc->paddr); in gr_start_dma()
415 dmactrl = gr_read32(&ep->regs->dmactrl); in gr_start_dma()
416 gr_write32(&ep->regs->dmactrl, dmactrl | GR_DMACTRL_DA); in gr_start_dma()
418 ep->dma_start = 1; in gr_start_dma()
427 static void gr_dma_advance(struct gr_ep *ep, int status) in gr_dma_advance() argument
431 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_dma_advance()
432 gr_finish_request(ep, req, status); in gr_dma_advance()
433 gr_start_dma(ep); /* Regardless of ep->dma_start */ in gr_dma_advance()
442 static void gr_abort_dma(struct gr_ep *ep) in gr_abort_dma() argument
446 dmactrl = gr_read32(&ep->regs->dmactrl); in gr_abort_dma()
447 gr_write32(&ep->regs->dmactrl, dmactrl | GR_DMACTRL_AD); in gr_abort_dma()
457 static int gr_add_dma_desc(struct gr_ep *ep, struct gr_request *req, in gr_add_dma_desc() argument
462 desc = gr_alloc_dma_desc(ep, gfp_flags); in gr_add_dma_desc()
467 if (ep->is_in) in gr_add_dma_desc()
496 static int gr_setup_out_desc_list(struct gr_ep *ep, struct gr_request *req, in gr_setup_out_desc_list() argument
508 u16 size = min(bytes_left, ep->bytes_per_buffer); in gr_setup_out_desc_list()
510 if (size < ep->bytes_per_buffer) { in gr_setup_out_desc_list()
516 ret = gr_add_dma_desc(ep, req, start, size, gfp_flags); in gr_setup_out_desc_list()
529 gr_free_dma_desc_chain(ep->dev, req); in gr_setup_out_desc_list()
549 static int gr_setup_in_desc_list(struct gr_ep *ep, struct gr_request *req, in gr_setup_in_desc_list() argument
561 u16 size = min(bytes_left, ep->bytes_per_buffer); in gr_setup_in_desc_list()
563 ret = gr_add_dma_desc(ep, req, start, size, gfp_flags); in gr_setup_in_desc_list()
576 if (req->req.zero && (req->req.length % ep->ep.maxpacket == 0)) { in gr_setup_in_desc_list()
577 ret = gr_add_dma_desc(ep, req, 0, 0, gfp_flags); in gr_setup_in_desc_list()
591 gr_free_dma_desc_chain(ep->dev, req); in gr_setup_in_desc_list()
597 static int gr_queue(struct gr_ep *ep, struct gr_request *req, gfp_t gfp_flags) in gr_queue() argument
599 struct gr_udc *dev = ep->dev; in gr_queue()
602 if (unlikely(!ep->ep.desc && ep->num != 0)) { in gr_queue()
603 dev_err(dev->dev, "No ep descriptor for %s\n", ep->ep.name); in gr_queue()
610 ep->ep.name, req->req.buf, list_empty(&req->queue)); in gr_queue()
626 ret = usb_gadget_map_request(&dev->gadget, &req->req, ep->is_in); in gr_queue()
632 if (ep->is_in) in gr_queue()
633 ret = gr_setup_in_desc_list(ep, req, gfp_flags); in gr_queue()
635 ret = gr_setup_out_desc_list(ep, req, gfp_flags); in gr_queue()
641 list_add_tail(&req->queue, &ep->queue); in gr_queue()
644 if (!ep->dma_start && likely(!ep->stopped)) in gr_queue()
645 gr_start_dma(ep); in gr_queue()
655 static inline int gr_queue_int(struct gr_ep *ep, struct gr_request *req, in gr_queue_int() argument
658 if (ep->is_in) in gr_queue_int()
659 gr_dbgprint_request("RESP", ep, req); in gr_queue_int()
661 return gr_queue(ep, req, gfp_flags); in gr_queue_int()
672 static void gr_ep_nuke(struct gr_ep *ep) in gr_ep_nuke() argument
676 ep->stopped = 1; in gr_ep_nuke()
677 ep->dma_start = 0; in gr_ep_nuke()
678 gr_abort_dma(ep); in gr_ep_nuke()
680 while (!list_empty(&ep->queue)) { in gr_ep_nuke()
681 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_ep_nuke()
682 gr_finish_request(ep, req, -ESHUTDOWN); in gr_ep_nuke()
691 static void gr_ep_reset(struct gr_ep *ep) in gr_ep_reset() argument
693 gr_write32(&ep->regs->epctrl, 0); in gr_ep_reset()
694 gr_write32(&ep->regs->dmactrl, 0); in gr_ep_reset()
696 ep->ep.maxpacket = MAX_CTRL_PL_SIZE; in gr_ep_reset()
697 ep->ep.desc = NULL; in gr_ep_reset()
698 ep->stopped = 1; in gr_ep_reset()
699 ep->dma_start = 0; in gr_ep_reset()
724 static int gr_ep_halt_wedge(struct gr_ep *ep, int halt, int wedge, int fromhost) in gr_ep_halt_wedge() argument
729 if (ep->num && !ep->ep.desc) in gr_ep_halt_wedge()
732 if (ep->num && ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) in gr_ep_halt_wedge()
736 if (!ep->num) { in gr_ep_halt_wedge()
739 gr_control_stall(ep->dev); in gr_ep_halt_wedge()
740 dev_dbg(ep->dev->dev, "EP: stall ep0\n"); in gr_ep_halt_wedge()
746 dev_dbg(ep->dev->dev, "EP: %s halt %s\n", in gr_ep_halt_wedge()
747 (halt ? (wedge ? "wedge" : "set") : "clear"), ep->ep.name); in gr_ep_halt_wedge()
749 epctrl = gr_read32(&ep->regs->epctrl); in gr_ep_halt_wedge()
752 gr_write32(&ep->regs->epctrl, epctrl | GR_EPCTRL_EH); in gr_ep_halt_wedge()
753 ep->stopped = 1; in gr_ep_halt_wedge()
755 ep->wedged = 1; in gr_ep_halt_wedge()
757 gr_write32(&ep->regs->epctrl, epctrl & ~GR_EPCTRL_EH); in gr_ep_halt_wedge()
758 ep->stopped = 0; in gr_ep_halt_wedge()
759 ep->wedged = 0; in gr_ep_halt_wedge()
762 if (!ep->dma_start) in gr_ep_halt_wedge()
763 gr_start_dma(ep); in gr_ep_halt_wedge()
797 struct gr_ep *ep; in gr_stop_activity() local
799 list_for_each_entry(ep, &dev->ep_list, ep_list) in gr_stop_activity()
800 gr_ep_nuke(ep); in gr_stop_activity()
814 struct gr_ep *ep; in gr_ep0_testmode_complete() local
818 ep = container_of(_ep, struct gr_ep, ep); in gr_ep0_testmode_complete()
819 dev = ep->dev; in gr_ep0_testmode_complete()
841 void (*complete)(struct usb_ep *ep, in gr_ep0_respond() argument
1002 struct gr_ep *ep; in gr_endpoint_request() local
1014 ep = (is_in ? &dev->epi[epnum] : &dev->epo[epnum]); in gr_endpoint_request()
1018 halted = gr_read32(&ep->regs->epctrl) & GR_EPCTRL_EH; in gr_endpoint_request()
1024 status = gr_ep_halt_wedge(ep, 1, 0, 1); in gr_endpoint_request()
1034 if (ep->wedged) in gr_endpoint_request()
1036 status = gr_ep_halt_wedge(ep, 0, 0, 1); in gr_endpoint_request()
1257 static int gr_handle_in_ep(struct gr_ep *ep) in gr_handle_in_ep() argument
1261 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_handle_in_ep()
1268 if (gr_read32(&ep->regs->epstat) & (GR_EPSTAT_B1 | GR_EPSTAT_B0)) in gr_handle_in_ep()
1272 gr_dma_advance(ep, 0); in gr_handle_in_ep()
1282 static int gr_handle_out_ep(struct gr_ep *ep) in gr_handle_out_ep() argument
1288 struct gr_udc *dev = ep->dev; in gr_handle_out_ep()
1290 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_handle_out_ep()
1304 if (len < ep->ep.maxpacket || req->req.actual >= req->req.length) { in gr_handle_out_ep()
1307 if ((ep == &dev->epo[0]) && (dev->ep0state == GR_EP0_OSTATUS)) { in gr_handle_out_ep()
1318 gr_dma_advance(ep, 0); in gr_handle_out_ep()
1324 ep_dmactrl = gr_read32(&ep->regs->dmactrl); in gr_handle_out_ep()
1325 gr_write32(&ep->regs->dmactrl, ep_dmactrl | GR_DMACTRL_DA); in gr_handle_out_ep()
1419 struct gr_ep *ep; in gr_irq_handler() local
1435 ep = &dev->epi[i]; in gr_irq_handler()
1436 if (!ep->stopped && !ep->callback && !list_empty(&ep->queue)) in gr_irq_handler()
1437 handled = gr_handle_in_ep(ep) || handled; in gr_irq_handler()
1442 ep = &dev->epo[i]; in gr_irq_handler()
1443 if (!ep->stopped && !ep->callback && !list_empty(&ep->queue)) in gr_irq_handler()
1444 handled = gr_handle_out_ep(ep) || handled; in gr_irq_handler()
1455 list_for_each_entry(ep, &dev->ep_list, ep_list) { in gr_irq_handler()
1456 if (gr_read32(&ep->regs->dmactrl) & GR_DMACTRL_AE) { in gr_irq_handler()
1459 ep->ep.name); in gr_irq_handler()
1490 struct gr_ep *ep; in gr_ep_enable() local
1497 ep = container_of(_ep, struct gr_ep, ep); in gr_ep_enable()
1501 dev = ep->dev; in gr_ep_enable()
1504 if (ep == &dev->epo[0] || ep == &dev->epi[0]) in gr_ep_enable()
1511 epctrl = gr_read32(&ep->regs->epctrl); in gr_ep_enable()
1516 if (!ep->is_in != !usb_endpoint_dir_in(desc)) in gr_ep_enable()
1520 if ((!ep->is_in && ep->num >= dev->nepo) || in gr_ep_enable()
1521 (ep->is_in && ep->num >= dev->nepi)) in gr_ep_enable()
1534 ep->ep.name); in gr_ep_enable()
1561 } else if (max > ep->ep.maxpacket_limit) { in gr_ep_enable()
1563 max, ep->ep.maxpacket_limit); in gr_ep_enable()
1567 spin_lock(&ep->dev->lock); in gr_ep_enable()
1569 if (!ep->stopped) { in gr_ep_enable()
1570 spin_unlock(&ep->dev->lock); in gr_ep_enable()
1574 ep->stopped = 0; in gr_ep_enable()
1575 ep->wedged = 0; in gr_ep_enable()
1576 ep->ep.desc = desc; in gr_ep_enable()
1577 ep->ep.maxpacket = max; in gr_ep_enable()
1578 ep->dma_start = 0; in gr_ep_enable()
1586 ep->bytes_per_buffer = (nt + 1) * max; in gr_ep_enable()
1587 } else if (ep->is_in) { in gr_ep_enable()
1593 ep->bytes_per_buffer = (buffer_size / max) * max; in gr_ep_enable()
1599 ep->bytes_per_buffer = max; in gr_ep_enable()
1606 if (ep->is_in) in gr_ep_enable()
1608 gr_write32(&ep->regs->epctrl, epctrl); in gr_ep_enable()
1610 gr_write32(&ep->regs->dmactrl, GR_DMACTRL_IE | GR_DMACTRL_AI); in gr_ep_enable()
1612 spin_unlock(&ep->dev->lock); in gr_ep_enable()
1614 dev_dbg(ep->dev->dev, "EP: %s enabled - %s with %d bytes/buffer\n", in gr_ep_enable()
1615 ep->ep.name, gr_modestring[mode], ep->bytes_per_buffer); in gr_ep_enable()
1622 struct gr_ep *ep; in gr_ep_disable() local
1626 ep = container_of(_ep, struct gr_ep, ep); in gr_ep_disable()
1627 if (!_ep || !ep->ep.desc) in gr_ep_disable()
1630 dev = ep->dev; in gr_ep_disable()
1633 if (ep == &dev->epo[0] || ep == &dev->epi[0]) in gr_ep_disable()
1639 dev_dbg(ep->dev->dev, "EP: disable %s\n", ep->ep.name); in gr_ep_disable()
1643 gr_ep_nuke(ep); in gr_ep_disable()
1644 gr_ep_reset(ep); in gr_ep_disable()
1645 ep->ep.desc = NULL; in gr_ep_disable()
1675 struct gr_ep *ep; in gr_queue_ext() local
1683 ep = container_of(_ep, struct gr_ep, ep); in gr_queue_ext()
1685 dev = ep->dev; in gr_queue_ext()
1687 spin_lock(&ep->dev->lock); in gr_queue_ext()
1695 if ((ep == &dev->epi[0]) && (dev->ep0state == GR_EP0_ODATA)) { in gr_queue_ext()
1696 ep = &dev->epo[0]; in gr_queue_ext()
1697 ep->ep.driver_data = dev->epi[0].ep.driver_data; in gr_queue_ext()
1700 if (ep->is_in) in gr_queue_ext()
1701 gr_dbgprint_request("EXTERN", ep, req); in gr_queue_ext()
1703 ret = gr_queue(ep, req, GFP_ATOMIC); in gr_queue_ext()
1705 spin_unlock(&ep->dev->lock); in gr_queue_ext()
1714 struct gr_ep *ep; in gr_dequeue() local
1719 ep = container_of(_ep, struct gr_ep, ep); in gr_dequeue()
1720 if (!_ep || !_req || (!ep->ep.desc && ep->num != 0)) in gr_dequeue()
1722 dev = ep->dev; in gr_dequeue()
1733 list_for_each_entry(req, &ep->queue, queue) { in gr_dequeue()
1742 if (list_first_entry(&ep->queue, struct gr_request, queue) == req) { in gr_dequeue()
1744 gr_abort_dma(ep); in gr_dequeue()
1745 if (ep->stopped) in gr_dequeue()
1746 gr_finish_request(ep, req, -ECONNRESET); in gr_dequeue()
1748 gr_dma_advance(ep, -ECONNRESET); in gr_dequeue()
1751 gr_finish_request(ep, req, -ECONNRESET); in gr_dequeue()
1766 struct gr_ep *ep; in gr_set_halt_wedge() local
1770 ep = container_of(_ep, struct gr_ep, ep); in gr_set_halt_wedge()
1772 spin_lock(&ep->dev->lock); in gr_set_halt_wedge()
1775 if (halt && ep->is_in && !list_empty(&ep->queue)) { in gr_set_halt_wedge()
1780 ret = gr_ep_halt_wedge(ep, halt, wedge, 0); in gr_set_halt_wedge()
1783 spin_unlock(&ep->dev->lock); in gr_set_halt_wedge()
1806 struct gr_ep *ep; in gr_fifo_status() local
1812 ep = container_of(_ep, struct gr_ep, ep); in gr_fifo_status()
1814 epstat = gr_read32(&ep->regs->epstat); in gr_fifo_status()
1828 struct gr_ep *ep; in gr_fifo_flush() local
1833 ep = container_of(_ep, struct gr_ep, ep); in gr_fifo_flush()
1834 dev_vdbg(ep->dev->dev, "EP: flush fifo %s\n", ep->ep.name); in gr_fifo_flush()
1836 spin_lock(&ep->dev->lock); in gr_fifo_flush()
1838 epctrl = gr_read32(&ep->regs->epctrl); in gr_fifo_flush()
1840 gr_write32(&ep->regs->epctrl, epctrl); in gr_fifo_flush()
1842 spin_unlock(&ep->dev->lock); in gr_fifo_flush()
1980 struct gr_ep *ep; in gr_ep_init() local
1986 ep = &dev->epi[num]; in gr_ep_init()
1987 ep->ep.name = inames[num]; in gr_ep_init()
1988 ep->regs = &dev->regs->epi[num]; in gr_ep_init()
1990 ep = &dev->epo[num]; in gr_ep_init()
1991 ep->ep.name = onames[num]; in gr_ep_init()
1992 ep->regs = &dev->regs->epo[num]; in gr_ep_init()
1995 gr_ep_reset(ep); in gr_ep_init()
1996 ep->num = num; in gr_ep_init()
1997 ep->is_in = is_in; in gr_ep_init()
1998 ep->dev = dev; in gr_ep_init()
1999 ep->ep.ops = &gr_ep_ops; in gr_ep_init()
2000 INIT_LIST_HEAD(&ep->queue); in gr_ep_init()
2003 _req = gr_alloc_request(&ep->ep, GFP_ATOMIC); in gr_ep_init()
2019 usb_ep_set_maxpacket_limit(&ep->ep, MAX_CTRL_PL_SIZE); in gr_ep_init()
2020 ep->bytes_per_buffer = MAX_CTRL_PL_SIZE; in gr_ep_init()
2022 ep->ep.caps.type_control = true; in gr_ep_init()
2024 usb_ep_set_maxpacket_limit(&ep->ep, (u16)maxplimit); in gr_ep_init()
2025 list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); in gr_ep_init()
2027 ep->ep.caps.type_iso = true; in gr_ep_init()
2028 ep->ep.caps.type_bulk = true; in gr_ep_init()
2029 ep->ep.caps.type_int = true; in gr_ep_init()
2031 list_add_tail(&ep->ep_list, &dev->ep_list); in gr_ep_init()
2034 ep->ep.caps.dir_in = true; in gr_ep_init()
2036 ep->ep.caps.dir_out = true; in gr_ep_init()
2038 ep->tailbuf = dma_alloc_coherent(dev->dev, ep->ep.maxpacket_limit, in gr_ep_init()
2039 &ep->tailbuf_paddr, GFP_ATOMIC); in gr_ep_init()
2040 if (!ep->tailbuf) in gr_ep_init()
2060 dev->gadget.ep0 = &dev->epi[0].ep; in gr_udc_init()
2097 struct gr_ep *ep; in gr_ep_remove() local
2100 ep = &dev->epi[num]; in gr_ep_remove()
2102 ep = &dev->epo[num]; in gr_ep_remove()
2104 if (ep->tailbuf) in gr_ep_remove()
2105 dma_free_coherent(dev->dev, ep->ep.maxpacket_limit, in gr_ep_remove()
2106 ep->tailbuf, ep->tailbuf_paddr); in gr_ep_remove()
2123 gr_free_request(&dev->epi[0].ep, &dev->ep0reqi->req); in gr_remove()
2124 gr_free_request(&dev->epo[0].ep, &dev->ep0reqo->req); in gr_remove()