Lines Matching refs:ep
91 static void gr_dbgprint_request(const char *str, struct gr_ep *ep, in gr_dbgprint_request() argument
94 int buflen = ep->is_in ? req->req.length : req->req.actual; in gr_dbgprint_request()
98 dev_dbg(ep->dev->dev, "%s: 0x%p, %d bytes data%s:\n", str, req, buflen, in gr_dbgprint_request()
112 static void gr_dbgprint_request(const char *str, struct gr_ep *ep, in gr_dbgprint_request() argument
125 static void gr_seq_ep_show(struct seq_file *seq, struct gr_ep *ep) in gr_seq_ep_show() argument
127 u32 epctrl = gr_read32(&ep->regs->epctrl); in gr_seq_ep_show()
128 u32 epstat = gr_read32(&ep->regs->epstat); in gr_seq_ep_show()
132 seq_printf(seq, "%s:\n", ep->ep.name); in gr_seq_ep_show()
137 seq_printf(seq, " dma_start = %d\n", ep->dma_start); in gr_seq_ep_show()
138 seq_printf(seq, " stopped = %d\n", ep->stopped); in gr_seq_ep_show()
139 seq_printf(seq, " wedged = %d\n", ep->wedged); in gr_seq_ep_show()
140 seq_printf(seq, " callback = %d\n", ep->callback); in gr_seq_ep_show()
141 seq_printf(seq, " maxpacket = %d\n", ep->ep.maxpacket); in gr_seq_ep_show()
142 seq_printf(seq, " maxpacket_limit = %d\n", ep->ep.maxpacket_limit); in gr_seq_ep_show()
143 seq_printf(seq, " bytes_per_buffer = %d\n", ep->bytes_per_buffer); in gr_seq_ep_show()
157 if (list_empty(&ep->queue)) { in gr_seq_ep_show()
163 list_for_each_entry(req, &ep->queue, queue) { in gr_seq_ep_show()
187 struct gr_ep *ep; in gr_dfs_show() local
200 list_for_each_entry(ep, &dev->ep_list, ep_list) in gr_dfs_show()
201 gr_seq_ep_show(seq, ep); in gr_dfs_show()
232 static struct gr_dma_desc *gr_alloc_dma_desc(struct gr_ep *ep, gfp_t gfp_flags) in gr_alloc_dma_desc() argument
237 dma_desc = dma_pool_zalloc(ep->dev->desc_pool, gfp_flags, &paddr); in gr_alloc_dma_desc()
239 dev_err(ep->dev->dev, "Could not allocate from DMA pool\n"); in gr_alloc_dma_desc()
283 static void gr_finish_request(struct gr_ep *ep, struct gr_request *req, in gr_finish_request() argument
297 dev = ep->dev; in gr_finish_request()
298 usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in); in gr_finish_request()
301 if (ep->is_in) { /* For OUT, req->req.actual gets updated bit by bit */ in gr_finish_request()
311 memcpy(buftail, ep->tailbuf, req->oddlen); in gr_finish_request()
315 dev_dbg(ep->dev->dev, "Overflow for ep %s\n", in gr_finish_request()
316 ep->ep.name); in gr_finish_request()
317 gr_dbgprint_request("OVFL", ep, req); in gr_finish_request()
323 if (ep->is_in) in gr_finish_request()
324 gr_dbgprint_request("SENT", ep, req); in gr_finish_request()
326 gr_dbgprint_request("RECV", ep, req); in gr_finish_request()
330 ep->callback = 1; in gr_finish_request()
340 usb_gadget_giveback_request(&ep->ep, &req->req); in gr_finish_request()
344 ep->callback = 0; in gr_finish_request()
365 static void gr_start_dma(struct gr_ep *ep) in gr_start_dma() argument
370 if (list_empty(&ep->queue)) { in gr_start_dma()
371 ep->dma_start = 0; in gr_start_dma()
375 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_start_dma()
386 if (!ep->is_in && req->oddlen) in gr_start_dma()
387 req->last_desc->data = ep->tailbuf_paddr; in gr_start_dma()
392 gr_write32(&ep->regs->dmaaddr, req->curr_desc->paddr); in gr_start_dma()
395 dmactrl = gr_read32(&ep->regs->dmactrl); in gr_start_dma()
396 gr_write32(&ep->regs->dmactrl, dmactrl | GR_DMACTRL_DA); in gr_start_dma()
398 ep->dma_start = 1; in gr_start_dma()
407 static void gr_dma_advance(struct gr_ep *ep, int status) in gr_dma_advance() argument
411 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_dma_advance()
412 gr_finish_request(ep, req, status); in gr_dma_advance()
413 gr_start_dma(ep); /* Regardless of ep->dma_start */ in gr_dma_advance()
422 static void gr_abort_dma(struct gr_ep *ep) in gr_abort_dma() argument
426 dmactrl = gr_read32(&ep->regs->dmactrl); in gr_abort_dma()
427 gr_write32(&ep->regs->dmactrl, dmactrl | GR_DMACTRL_AD); in gr_abort_dma()
437 static int gr_add_dma_desc(struct gr_ep *ep, struct gr_request *req, in gr_add_dma_desc() argument
442 desc = gr_alloc_dma_desc(ep, gfp_flags); in gr_add_dma_desc()
447 if (ep->is_in) in gr_add_dma_desc()
476 static int gr_setup_out_desc_list(struct gr_ep *ep, struct gr_request *req, in gr_setup_out_desc_list() argument
488 u16 size = min(bytes_left, ep->bytes_per_buffer); in gr_setup_out_desc_list()
490 if (size < ep->bytes_per_buffer) { in gr_setup_out_desc_list()
496 ret = gr_add_dma_desc(ep, req, start, size, gfp_flags); in gr_setup_out_desc_list()
509 gr_free_dma_desc_chain(ep->dev, req); in gr_setup_out_desc_list()
529 static int gr_setup_in_desc_list(struct gr_ep *ep, struct gr_request *req, in gr_setup_in_desc_list() argument
541 u16 size = min(bytes_left, ep->bytes_per_buffer); in gr_setup_in_desc_list()
543 ret = gr_add_dma_desc(ep, req, start, size, gfp_flags); in gr_setup_in_desc_list()
556 if (req->req.zero && (req->req.length % ep->ep.maxpacket == 0)) { in gr_setup_in_desc_list()
557 ret = gr_add_dma_desc(ep, req, 0, 0, gfp_flags); in gr_setup_in_desc_list()
571 gr_free_dma_desc_chain(ep->dev, req); in gr_setup_in_desc_list()
577 static int gr_queue(struct gr_ep *ep, struct gr_request *req, gfp_t gfp_flags) in gr_queue() argument
579 struct gr_udc *dev = ep->dev; in gr_queue()
582 if (unlikely(!ep->ep.desc && ep->num != 0)) { in gr_queue()
583 dev_err(dev->dev, "No ep descriptor for %s\n", ep->ep.name); in gr_queue()
590 ep->ep.name, req->req.buf, list_empty(&req->queue)); in gr_queue()
606 ret = usb_gadget_map_request(&dev->gadget, &req->req, ep->is_in); in gr_queue()
612 if (ep->is_in) in gr_queue()
613 ret = gr_setup_in_desc_list(ep, req, gfp_flags); in gr_queue()
615 ret = gr_setup_out_desc_list(ep, req, gfp_flags); in gr_queue()
621 list_add_tail(&req->queue, &ep->queue); in gr_queue()
624 if (!ep->dma_start && likely(!ep->stopped)) in gr_queue()
625 gr_start_dma(ep); in gr_queue()
635 static inline int gr_queue_int(struct gr_ep *ep, struct gr_request *req, in gr_queue_int() argument
638 if (ep->is_in) in gr_queue_int()
639 gr_dbgprint_request("RESP", ep, req); in gr_queue_int()
641 return gr_queue(ep, req, gfp_flags); in gr_queue_int()
652 static void gr_ep_nuke(struct gr_ep *ep) in gr_ep_nuke() argument
656 ep->stopped = 1; in gr_ep_nuke()
657 ep->dma_start = 0; in gr_ep_nuke()
658 gr_abort_dma(ep); in gr_ep_nuke()
660 while (!list_empty(&ep->queue)) { in gr_ep_nuke()
661 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_ep_nuke()
662 gr_finish_request(ep, req, -ESHUTDOWN); in gr_ep_nuke()
671 static void gr_ep_reset(struct gr_ep *ep) in gr_ep_reset() argument
673 gr_write32(&ep->regs->epctrl, 0); in gr_ep_reset()
674 gr_write32(&ep->regs->dmactrl, 0); in gr_ep_reset()
676 ep->ep.maxpacket = MAX_CTRL_PL_SIZE; in gr_ep_reset()
677 ep->ep.desc = NULL; in gr_ep_reset()
678 ep->stopped = 1; in gr_ep_reset()
679 ep->dma_start = 0; in gr_ep_reset()
704 static int gr_ep_halt_wedge(struct gr_ep *ep, int halt, int wedge, int fromhost) in gr_ep_halt_wedge() argument
709 if (ep->num && !ep->ep.desc) in gr_ep_halt_wedge()
712 if (ep->num && ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) in gr_ep_halt_wedge()
716 if (!ep->num) { in gr_ep_halt_wedge()
719 gr_control_stall(ep->dev); in gr_ep_halt_wedge()
720 dev_dbg(ep->dev->dev, "EP: stall ep0\n"); in gr_ep_halt_wedge()
726 dev_dbg(ep->dev->dev, "EP: %s halt %s\n", in gr_ep_halt_wedge()
727 (halt ? (wedge ? "wedge" : "set") : "clear"), ep->ep.name); in gr_ep_halt_wedge()
729 epctrl = gr_read32(&ep->regs->epctrl); in gr_ep_halt_wedge()
732 gr_write32(&ep->regs->epctrl, epctrl | GR_EPCTRL_EH); in gr_ep_halt_wedge()
733 ep->stopped = 1; in gr_ep_halt_wedge()
735 ep->wedged = 1; in gr_ep_halt_wedge()
737 gr_write32(&ep->regs->epctrl, epctrl & ~GR_EPCTRL_EH); in gr_ep_halt_wedge()
738 ep->stopped = 0; in gr_ep_halt_wedge()
739 ep->wedged = 0; in gr_ep_halt_wedge()
742 if (!ep->dma_start) in gr_ep_halt_wedge()
743 gr_start_dma(ep); in gr_ep_halt_wedge()
777 struct gr_ep *ep; in gr_stop_activity() local
779 list_for_each_entry(ep, &dev->ep_list, ep_list) in gr_stop_activity()
780 gr_ep_nuke(ep); in gr_stop_activity()
794 struct gr_ep *ep; in gr_ep0_testmode_complete() local
798 ep = container_of(_ep, struct gr_ep, ep); in gr_ep0_testmode_complete()
799 dev = ep->dev; in gr_ep0_testmode_complete()
821 void (*complete)(struct usb_ep *ep, in gr_ep0_respond() argument
982 struct gr_ep *ep; in gr_endpoint_request() local
994 ep = (is_in ? &dev->epi[epnum] : &dev->epo[epnum]); in gr_endpoint_request()
998 halted = gr_read32(&ep->regs->epctrl) & GR_EPCTRL_EH; in gr_endpoint_request()
1004 status = gr_ep_halt_wedge(ep, 1, 0, 1); in gr_endpoint_request()
1014 if (ep->wedged) in gr_endpoint_request()
1016 status = gr_ep_halt_wedge(ep, 0, 0, 1); in gr_endpoint_request()
1237 static int gr_handle_in_ep(struct gr_ep *ep) in gr_handle_in_ep() argument
1241 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_handle_in_ep()
1248 if (gr_read32(&ep->regs->epstat) & (GR_EPSTAT_B1 | GR_EPSTAT_B0)) in gr_handle_in_ep()
1252 gr_dma_advance(ep, 0); in gr_handle_in_ep()
1262 static int gr_handle_out_ep(struct gr_ep *ep) in gr_handle_out_ep() argument
1268 struct gr_udc *dev = ep->dev; in gr_handle_out_ep()
1270 req = list_first_entry(&ep->queue, struct gr_request, queue); in gr_handle_out_ep()
1284 if (len < ep->ep.maxpacket || req->req.actual >= req->req.length) { in gr_handle_out_ep()
1287 if ((ep == &dev->epo[0]) && (dev->ep0state == GR_EP0_OSTATUS)) { in gr_handle_out_ep()
1298 gr_dma_advance(ep, 0); in gr_handle_out_ep()
1304 ep_dmactrl = gr_read32(&ep->regs->dmactrl); in gr_handle_out_ep()
1305 gr_write32(&ep->regs->dmactrl, ep_dmactrl | GR_DMACTRL_DA); in gr_handle_out_ep()
1399 struct gr_ep *ep; in gr_irq_handler() local
1415 ep = &dev->epi[i]; in gr_irq_handler()
1416 if (!ep->stopped && !ep->callback && !list_empty(&ep->queue)) in gr_irq_handler()
1417 handled = gr_handle_in_ep(ep) || handled; in gr_irq_handler()
1422 ep = &dev->epo[i]; in gr_irq_handler()
1423 if (!ep->stopped && !ep->callback && !list_empty(&ep->queue)) in gr_irq_handler()
1424 handled = gr_handle_out_ep(ep) || handled; in gr_irq_handler()
1435 list_for_each_entry(ep, &dev->ep_list, ep_list) { in gr_irq_handler()
1436 if (gr_read32(&ep->regs->dmactrl) & GR_DMACTRL_AE) { in gr_irq_handler()
1439 ep->ep.name); in gr_irq_handler()
1470 struct gr_ep *ep; in gr_ep_enable() local
1477 ep = container_of(_ep, struct gr_ep, ep); in gr_ep_enable()
1481 dev = ep->dev; in gr_ep_enable()
1484 if (ep == &dev->epo[0] || ep == &dev->epi[0]) in gr_ep_enable()
1491 epctrl = gr_read32(&ep->regs->epctrl); in gr_ep_enable()
1496 if (!ep->is_in != !usb_endpoint_dir_in(desc)) in gr_ep_enable()
1500 if ((!ep->is_in && ep->num >= dev->nepo) || in gr_ep_enable()
1501 (ep->is_in && ep->num >= dev->nepi)) in gr_ep_enable()
1514 ep->ep.name); in gr_ep_enable()
1541 } else if (max > ep->ep.maxpacket_limit) { in gr_ep_enable()
1543 max, ep->ep.maxpacket_limit); in gr_ep_enable()
1547 spin_lock(&ep->dev->lock); in gr_ep_enable()
1549 if (!ep->stopped) { in gr_ep_enable()
1550 spin_unlock(&ep->dev->lock); in gr_ep_enable()
1554 ep->stopped = 0; in gr_ep_enable()
1555 ep->wedged = 0; in gr_ep_enable()
1556 ep->ep.desc = desc; in gr_ep_enable()
1557 ep->ep.maxpacket = max; in gr_ep_enable()
1558 ep->dma_start = 0; in gr_ep_enable()
1566 ep->bytes_per_buffer = (nt + 1) * max; in gr_ep_enable()
1567 } else if (ep->is_in) { in gr_ep_enable()
1573 ep->bytes_per_buffer = (buffer_size / max) * max; in gr_ep_enable()
1579 ep->bytes_per_buffer = max; in gr_ep_enable()
1586 if (ep->is_in) in gr_ep_enable()
1588 gr_write32(&ep->regs->epctrl, epctrl); in gr_ep_enable()
1590 gr_write32(&ep->regs->dmactrl, GR_DMACTRL_IE | GR_DMACTRL_AI); in gr_ep_enable()
1592 spin_unlock(&ep->dev->lock); in gr_ep_enable()
1594 dev_dbg(ep->dev->dev, "EP: %s enabled - %s with %d bytes/buffer\n", in gr_ep_enable()
1595 ep->ep.name, gr_modestring[mode], ep->bytes_per_buffer); in gr_ep_enable()
1602 struct gr_ep *ep; in gr_ep_disable() local
1606 ep = container_of(_ep, struct gr_ep, ep); in gr_ep_disable()
1607 if (!_ep || !ep->ep.desc) in gr_ep_disable()
1610 dev = ep->dev; in gr_ep_disable()
1613 if (ep == &dev->epo[0] || ep == &dev->epi[0]) in gr_ep_disable()
1619 dev_dbg(ep->dev->dev, "EP: disable %s\n", ep->ep.name); in gr_ep_disable()
1623 gr_ep_nuke(ep); in gr_ep_disable()
1624 gr_ep_reset(ep); in gr_ep_disable()
1625 ep->ep.desc = NULL; in gr_ep_disable()
1655 struct gr_ep *ep; in gr_queue_ext() local
1663 ep = container_of(_ep, struct gr_ep, ep); in gr_queue_ext()
1665 dev = ep->dev; in gr_queue_ext()
1667 spin_lock(&ep->dev->lock); in gr_queue_ext()
1675 if ((ep == &dev->epi[0]) && (dev->ep0state == GR_EP0_ODATA)) { in gr_queue_ext()
1676 ep = &dev->epo[0]; in gr_queue_ext()
1677 ep->ep.driver_data = dev->epi[0].ep.driver_data; in gr_queue_ext()
1680 if (ep->is_in) in gr_queue_ext()
1681 gr_dbgprint_request("EXTERN", ep, req); in gr_queue_ext()
1683 ret = gr_queue(ep, req, GFP_ATOMIC); in gr_queue_ext()
1685 spin_unlock(&ep->dev->lock); in gr_queue_ext()
1694 struct gr_ep *ep; in gr_dequeue() local
1699 ep = container_of(_ep, struct gr_ep, ep); in gr_dequeue()
1700 if (!_ep || !_req || (!ep->ep.desc && ep->num != 0)) in gr_dequeue()
1702 dev = ep->dev; in gr_dequeue()
1713 list_for_each_entry(iter, &ep->queue, queue) { in gr_dequeue()
1724 if (list_first_entry(&ep->queue, struct gr_request, queue) == req) { in gr_dequeue()
1726 gr_abort_dma(ep); in gr_dequeue()
1727 if (ep->stopped) in gr_dequeue()
1728 gr_finish_request(ep, req, -ECONNRESET); in gr_dequeue()
1730 gr_dma_advance(ep, -ECONNRESET); in gr_dequeue()
1733 gr_finish_request(ep, req, -ECONNRESET); in gr_dequeue()
1748 struct gr_ep *ep; in gr_set_halt_wedge() local
1752 ep = container_of(_ep, struct gr_ep, ep); in gr_set_halt_wedge()
1754 spin_lock(&ep->dev->lock); in gr_set_halt_wedge()
1757 if (halt && ep->is_in && !list_empty(&ep->queue)) { in gr_set_halt_wedge()
1762 ret = gr_ep_halt_wedge(ep, halt, wedge, 0); in gr_set_halt_wedge()
1765 spin_unlock(&ep->dev->lock); in gr_set_halt_wedge()
1788 struct gr_ep *ep; in gr_fifo_status() local
1794 ep = container_of(_ep, struct gr_ep, ep); in gr_fifo_status()
1796 epstat = gr_read32(&ep->regs->epstat); in gr_fifo_status()
1810 struct gr_ep *ep; in gr_fifo_flush() local
1815 ep = container_of(_ep, struct gr_ep, ep); in gr_fifo_flush()
1816 dev_vdbg(ep->dev->dev, "EP: flush fifo %s\n", ep->ep.name); in gr_fifo_flush()
1818 spin_lock(&ep->dev->lock); in gr_fifo_flush()
1820 epctrl = gr_read32(&ep->regs->epctrl); in gr_fifo_flush()
1822 gr_write32(&ep->regs->epctrl, epctrl); in gr_fifo_flush()
1824 spin_unlock(&ep->dev->lock); in gr_fifo_flush()
1961 struct gr_ep *ep; in gr_ep_init() local
1967 ep = &dev->epi[num]; in gr_ep_init()
1968 ep->ep.name = inames[num]; in gr_ep_init()
1969 ep->regs = &dev->regs->epi[num]; in gr_ep_init()
1971 ep = &dev->epo[num]; in gr_ep_init()
1972 ep->ep.name = onames[num]; in gr_ep_init()
1973 ep->regs = &dev->regs->epo[num]; in gr_ep_init()
1976 gr_ep_reset(ep); in gr_ep_init()
1977 ep->num = num; in gr_ep_init()
1978 ep->is_in = is_in; in gr_ep_init()
1979 ep->dev = dev; in gr_ep_init()
1980 ep->ep.ops = &gr_ep_ops; in gr_ep_init()
1981 INIT_LIST_HEAD(&ep->queue); in gr_ep_init()
1984 _req = gr_alloc_request(&ep->ep, GFP_ATOMIC); in gr_ep_init()
1990 gr_free_request(&ep->ep, _req); in gr_ep_init()
2003 usb_ep_set_maxpacket_limit(&ep->ep, MAX_CTRL_PL_SIZE); in gr_ep_init()
2004 ep->bytes_per_buffer = MAX_CTRL_PL_SIZE; in gr_ep_init()
2006 ep->ep.caps.type_control = true; in gr_ep_init()
2008 usb_ep_set_maxpacket_limit(&ep->ep, (u16)maxplimit); in gr_ep_init()
2009 list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); in gr_ep_init()
2011 ep->ep.caps.type_iso = true; in gr_ep_init()
2012 ep->ep.caps.type_bulk = true; in gr_ep_init()
2013 ep->ep.caps.type_int = true; in gr_ep_init()
2015 list_add_tail(&ep->ep_list, &dev->ep_list); in gr_ep_init()
2018 ep->ep.caps.dir_in = true; in gr_ep_init()
2020 ep->ep.caps.dir_out = true; in gr_ep_init()
2022 ep->tailbuf = dma_alloc_coherent(dev->dev, ep->ep.maxpacket_limit, in gr_ep_init()
2023 &ep->tailbuf_paddr, GFP_ATOMIC); in gr_ep_init()
2024 if (!ep->tailbuf) in gr_ep_init()
2044 dev->gadget.ep0 = &dev->epi[0].ep; in gr_udc_init()
2081 struct gr_ep *ep; in gr_ep_remove() local
2084 ep = &dev->epi[num]; in gr_ep_remove()
2086 ep = &dev->epo[num]; in gr_ep_remove()
2088 if (ep->tailbuf) in gr_ep_remove()
2089 dma_free_coherent(dev->dev, ep->ep.maxpacket_limit, in gr_ep_remove()
2090 ep->tailbuf, ep->tailbuf_paddr); in gr_ep_remove()
2107 gr_free_request(&dev->epi[0].ep, &dev->ep0reqi->req); in gr_remove()
2108 gr_free_request(&dev->epo[0].ep, &dev->ep0reqo->req); in gr_remove()