Lines Matching +full:ring +full:- +full:disable +full:- +full:pullup
1 // SPDX-License-Identifier: GPL-2.0
3 * gadget.c - DesignWare USB3 DRD Controller Gadget Framework Link
5 * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
20 #include <linux/dma-mapping.h>
30 #define DWC3_ALIGN_FRAME(d, n) (((d)->frame_number + ((d)->interval * (n))) \
31 & ~((d)->interval - 1))
34 * dwc3_gadget_set_test_mode - enables usb2 test modes
39 * success or -EINVAL if wrong Test Selector is passed.
45 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_set_test_mode()
57 return -EINVAL; in dwc3_gadget_set_test_mode()
66 * dwc3_gadget_get_link_state - gets current state of usb link
70 * return the link state on success (>= 0) or -ETIMEDOUT.
76 reg = dwc3_readl(dwc->regs, DWC3_DSTS); in dwc3_gadget_get_link_state()
82 * dwc3_gadget_set_link_state - sets usb link to a particular state
87 * return 0 on success or -ETIMEDOUT.
99 while (--retries) { in dwc3_gadget_set_link_state()
100 reg = dwc3_readl(dwc->regs, DWC3_DSTS); in dwc3_gadget_set_link_state()
108 return -ETIMEDOUT; in dwc3_gadget_set_link_state()
111 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_set_link_state()
115 dwc3_writel(dwc->regs, DWC3_DCTL, reg); in dwc3_gadget_set_link_state()
119 dwc3_writel(dwc->regs, DWC3_DCTL, reg); in dwc3_gadget_set_link_state()
130 while (--retries) { in dwc3_gadget_set_link_state()
131 reg = dwc3_readl(dwc->regs, DWC3_DSTS); in dwc3_gadget_set_link_state()
139 return -ETIMEDOUT; in dwc3_gadget_set_link_state()
146 if (dwc->ep0state != EP0_SETUP_PHASE) { in dwc3_ep0_reset_state()
147 dir = !!dwc->ep0_expect_in; in dwc3_ep0_reset_state()
148 if (dwc->ep0state == EP0_DATA_PHASE) in dwc3_ep0_reset_state()
149 dwc3_ep0_end_control_data(dwc, dwc->eps[dir]); in dwc3_ep0_reset_state()
151 dwc3_ep0_end_control_data(dwc, dwc->eps[!dir]); in dwc3_ep0_reset_state()
153 dwc->eps[0]->trb_enqueue = 0; in dwc3_ep0_reset_state()
154 dwc->eps[1]->trb_enqueue = 0; in dwc3_ep0_reset_state()
161 * dwc3_ep_inc_trb - increment a trb index.
171 if (*index == (DWC3_TRB_NUM - 1)) in dwc3_ep_inc_trb()
176 * dwc3_ep_inc_enq - increment endpoint's enqueue pointer
181 dwc3_ep_inc_trb(&dep->trb_enqueue); in dwc3_ep_inc_enq()
185 * dwc3_ep_inc_deq - increment endpoint's dequeue pointer
190 dwc3_ep_inc_trb(&dep->trb_dequeue); in dwc3_ep_inc_deq()
196 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_del_and_unmap_request()
198 list_del(&req->list); in dwc3_gadget_del_and_unmap_request()
199 req->remaining = 0; in dwc3_gadget_del_and_unmap_request()
200 req->needs_extra_trb = false; in dwc3_gadget_del_and_unmap_request()
201 req->num_trbs = 0; in dwc3_gadget_del_and_unmap_request()
203 if (req->request.status == -EINPROGRESS) in dwc3_gadget_del_and_unmap_request()
204 req->request.status = status; in dwc3_gadget_del_and_unmap_request()
206 if (req->trb) in dwc3_gadget_del_and_unmap_request()
207 usb_gadget_unmap_request_by_dev(dwc->sysdev, in dwc3_gadget_del_and_unmap_request()
208 &req->request, req->direction); in dwc3_gadget_del_and_unmap_request()
210 req->trb = NULL; in dwc3_gadget_del_and_unmap_request()
213 if (dep->number > 1) in dwc3_gadget_del_and_unmap_request()
214 pm_runtime_put(dwc->dev); in dwc3_gadget_del_and_unmap_request()
218 * dwc3_gadget_giveback - call struct usb_request's ->complete callback
224 * function will unmap @req and call its ->complete() callback to notify upper
230 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_giveback()
233 req->status = DWC3_REQUEST_STATUS_COMPLETED; in dwc3_gadget_giveback()
235 spin_unlock(&dwc->lock); in dwc3_gadget_giveback()
236 usb_gadget_giveback_request(&dep->endpoint, &req->request); in dwc3_gadget_giveback()
237 spin_lock(&dwc->lock); in dwc3_gadget_giveback()
241 * dwc3_send_gadget_generic_command - issue a generic command for the controller
257 dwc3_writel(dwc->regs, DWC3_DGCMDPAR, param); in dwc3_send_gadget_generic_command()
258 dwc3_writel(dwc->regs, DWC3_DGCMD, cmd | DWC3_DGCMD_CMDACT); in dwc3_send_gadget_generic_command()
261 reg = dwc3_readl(dwc->regs, DWC3_DGCMD); in dwc3_send_gadget_generic_command()
265 ret = -EINVAL; in dwc3_send_gadget_generic_command()
268 } while (--timeout); in dwc3_send_gadget_generic_command()
271 ret = -ETIMEDOUT; in dwc3_send_gadget_generic_command()
272 status = -ETIMEDOUT; in dwc3_send_gadget_generic_command()
283 * dwc3_send_gadget_ep_cmd - issue an endpoint command
311 const struct usb_endpoint_descriptor *desc = dep->endpoint.desc; in dwc3_send_gadget_ep_cmd()
312 struct dwc3 *dwc = dep->dwc; in dwc3_send_gadget_ep_cmd()
318 int ret = -EINVAL; in dwc3_send_gadget_ep_cmd()
330 if (dwc->gadget->speed <= USB_SPEED_HIGH || in dwc3_send_gadget_ep_cmd()
332 reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); in dwc3_send_gadget_ep_cmd()
344 dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); in dwc3_send_gadget_ep_cmd()
354 dwc3_writel(dep->regs, DWC3_DEPCMDPAR0, params->param0); in dwc3_send_gadget_ep_cmd()
355 dwc3_writel(dep->regs, DWC3_DEPCMDPAR1, params->param1); in dwc3_send_gadget_ep_cmd()
356 dwc3_writel(dep->regs, DWC3_DEPCMDPAR2, params->param2); in dwc3_send_gadget_ep_cmd()
380 dwc3_writel(dep->regs, DWC3_DEPCMD, cmd); in dwc3_send_gadget_ep_cmd()
390 reg = dwc3_readl(dep->regs, DWC3_DEPCMD); in dwc3_send_gadget_ep_cmd()
399 dev_WARN(dwc->dev, "No resource for %s\n", in dwc3_send_gadget_ep_cmd()
400 dep->name); in dwc3_send_gadget_ep_cmd()
401 ret = -EINVAL; in dwc3_send_gadget_ep_cmd()
411 * Instead of always returning -EINVAL, let's in dwc3_send_gadget_ep_cmd()
413 * the case by returning -EAGAIN. in dwc3_send_gadget_ep_cmd()
415 ret = -EAGAIN; in dwc3_send_gadget_ep_cmd()
418 dev_WARN(dwc->dev, "UNKNOWN cmd status\n"); in dwc3_send_gadget_ep_cmd()
423 } while (--timeout); in dwc3_send_gadget_ep_cmd()
426 ret = -ETIMEDOUT; in dwc3_send_gadget_ep_cmd()
427 cmd_status = -ETIMEDOUT; in dwc3_send_gadget_ep_cmd()
435 dep->flags |= DWC3_EP_TRANSFER_STARTED; in dwc3_send_gadget_ep_cmd()
437 if (ret != -ETIMEDOUT) in dwc3_send_gadget_ep_cmd()
446 reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); in dwc3_send_gadget_ep_cmd()
448 dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); in dwc3_send_gadget_ep_cmd()
456 struct dwc3 *dwc = dep->dwc; in dwc3_send_clear_stall_ep_cmd()
464 * some (non-compliant) hosts may not send ACK TPs for pending in dwc3_send_clear_stall_ep_cmd()
468 if (dep->direction && in dwc3_send_clear_stall_ep_cmd()
470 (dwc->gadget->speed >= USB_SPEED_SUPER)) in dwc3_send_clear_stall_ep_cmd()
481 u32 offset = (char *) trb - (char *) dep->trb_pool; in dwc3_trb_dma_offset()
483 return dep->trb_pool_dma + offset; in dwc3_trb_dma_offset()
488 struct dwc3 *dwc = dep->dwc; in dwc3_alloc_trb_pool()
490 if (dep->trb_pool) in dwc3_alloc_trb_pool()
493 dep->trb_pool = dma_alloc_coherent(dwc->sysdev, in dwc3_alloc_trb_pool()
495 &dep->trb_pool_dma, GFP_KERNEL); in dwc3_alloc_trb_pool()
496 if (!dep->trb_pool) { in dwc3_alloc_trb_pool()
497 dev_err(dep->dwc->dev, "failed to allocate trb pool for %s\n", in dwc3_alloc_trb_pool()
498 dep->name); in dwc3_alloc_trb_pool()
499 return -ENOMEM; in dwc3_alloc_trb_pool()
507 struct dwc3 *dwc = dep->dwc; in dwc3_free_trb_pool()
509 dma_free_coherent(dwc->sysdev, sizeof(struct dwc3_trb) * DWC3_TRB_NUM, in dwc3_free_trb_pool()
510 dep->trb_pool, dep->trb_pool_dma); in dwc3_free_trb_pool()
512 dep->trb_pool = NULL; in dwc3_free_trb_pool()
513 dep->trb_pool_dma = 0; in dwc3_free_trb_pool()
521 if (dep->flags & DWC3_EP_RESOURCE_ALLOCATED) in dwc3_gadget_set_xfer_resource()
533 dep->flags |= DWC3_EP_RESOURCE_ALLOCATED; in dwc3_gadget_set_xfer_resource()
538 * dwc3_gadget_start_config - reset endpoint resources
543 * part of the power-on/soft-reset initialization.
545 * Set resource_index=2 to reset only non-control endpoints' resources. Do this
556 return -EINVAL; in dwc3_gadget_start_config()
562 ret = dwc3_send_gadget_ep_cmd(dwc->eps[0], cmd, ¶ms); in dwc3_gadget_start_config()
567 for (i = resource_index; i < dwc->num_eps && dwc->eps[i]; i++) in dwc3_gadget_start_config()
568 dwc->eps[i]->flags &= ~DWC3_EP_RESOURCE_ALLOCATED; in dwc3_gadget_start_config()
578 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_set_ep_config()
580 comp_desc = dep->endpoint.comp_desc; in dwc3_gadget_set_ep_config()
581 desc = dep->endpoint.desc; in dwc3_gadget_set_ep_config()
589 if (dwc->gadget->speed >= USB_SPEED_SUPER) { in dwc3_gadget_set_ep_config()
590 u32 burst = dep->endpoint.maxburst; in dwc3_gadget_set_ep_config()
592 params.param0 |= DWC3_DEPCFG_BURST_SIZE(burst - 1); in dwc3_gadget_set_ep_config()
597 params.param2 |= dep->saved_state; in dwc3_gadget_set_ep_config()
602 if (dep->number <= 1 || usb_endpoint_xfer_isoc(desc)) in dwc3_gadget_set_ep_config()
609 dep->stream_capable = true; in dwc3_gadget_set_ep_config()
621 params.param1 |= DWC3_DEPCFG_EP_NUMBER(dep->number); in dwc3_gadget_set_ep_config()
627 if (dep->direction) in dwc3_gadget_set_ep_config()
628 params.param0 |= DWC3_DEPCFG_FIFO_NUMBER(dep->number >> 1); in dwc3_gadget_set_ep_config()
630 if (desc->bInterval) { in dwc3_gadget_set_ep_config()
641 bInterval_m1 = min_t(u8, desc->bInterval - 1, 13); in dwc3_gadget_set_ep_config()
644 dwc->gadget->speed == USB_SPEED_FULL) in dwc3_gadget_set_ep_config()
645 dep->interval = desc->bInterval; in dwc3_gadget_set_ep_config()
647 dep->interval = 1 << (desc->bInterval - 1); in dwc3_gadget_set_ep_config()
656 * dwc3_gadget_calc_tx_fifo_size - calculates the txfifo size value
691 * dwc3_gadget_calc_ram_depth - calculates the ram depth for txfifo
701 is_single_port_ram = DWC3_SPRAM_TYPE(dwc->hwparams.hwparams1); in dwc3_gadget_calc_ram_depth()
707 ram_depth = is_single_port_ram ? DWC3_RAM0_DEPTH(dwc->hwparams.hwparams6) : in dwc3_gadget_calc_ram_depth()
708 DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7); in dwc3_gadget_calc_ram_depth()
713 * at a non-zero address. in dwc3_gadget_calc_ram_depth()
718 /* Check if TXFIFOs start at non-zero addr */ in dwc3_gadget_calc_ram_depth()
719 reg = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0)); in dwc3_gadget_calc_ram_depth()
722 ram_depth -= (fifo_0_start >> 16); in dwc3_gadget_calc_ram_depth()
729 * dwc3_gadget_clear_tx_fifos - Clears txfifo allocation
742 if (!dwc->do_fifo_resize) in dwc3_gadget_clear_tx_fifos()
746 dep = dwc->eps[1]; in dwc3_gadget_clear_tx_fifos()
747 size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0)); in dwc3_gadget_clear_tx_fifos()
753 dwc->last_fifo_depth = fifo_depth; in dwc3_gadget_clear_tx_fifos()
755 for (num = 3; num < min_t(int, dwc->num_eps, DWC3_ENDPOINTS_NUM); in dwc3_gadget_clear_tx_fifos()
757 dep = dwc->eps[num]; in dwc3_gadget_clear_tx_fifos()
760 dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1)) & in dwc3_gadget_clear_tx_fifos()
763 dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1), size); in dwc3_gadget_clear_tx_fifos()
764 dep->flags &= ~DWC3_EP_TXFIFO_RESIZED; in dwc3_gadget_clear_tx_fifos()
766 dwc->num_ep_resized = 0; in dwc3_gadget_clear_tx_fifos()
770 * dwc3_gadget_resize_tx_fifos - reallocate fifo spaces for current use-case
778 * on the configured size for RAM1 - which contains TxFifo -,
792 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_resize_tx_fifos()
803 if (!dwc->do_fifo_resize) in dwc3_gadget_resize_tx_fifos()
807 if (!usb_endpoint_dir_in(dep->endpoint.desc) || dep->number <= 1) in dwc3_gadget_resize_tx_fifos()
811 if (dep->flags & DWC3_EP_TXFIFO_RESIZED) in dwc3_gadget_resize_tx_fifos()
816 if ((dep->endpoint.maxburst > 1 && in dwc3_gadget_resize_tx_fifos()
817 usb_endpoint_xfer_bulk(dep->endpoint.desc)) || in dwc3_gadget_resize_tx_fifos()
818 usb_endpoint_xfer_isoc(dep->endpoint.desc)) in dwc3_gadget_resize_tx_fifos()
821 if (dep->endpoint.maxburst > 6 && in dwc3_gadget_resize_tx_fifos()
822 (usb_endpoint_xfer_bulk(dep->endpoint.desc) || in dwc3_gadget_resize_tx_fifos()
823 usb_endpoint_xfer_isoc(dep->endpoint.desc)) && DWC3_IP_IS(DWC31)) in dwc3_gadget_resize_tx_fifos()
824 num_fifos = dwc->tx_fifo_resize_max_num; in dwc3_gadget_resize_tx_fifos()
830 num_in_ep = dwc->max_cfg_eps; in dwc3_gadget_resize_tx_fifos()
831 num_in_ep -= dwc->num_ep_resized; in dwc3_gadget_resize_tx_fifos()
835 remaining = ram_depth - min_depth - dwc->last_fifo_depth; in dwc3_gadget_resize_tx_fifos()
842 fifo_size = (num_fifos - 1) * fifo; in dwc3_gadget_resize_tx_fifos()
850 /* Check if TXFIFOs start at non-zero addr */ in dwc3_gadget_resize_tx_fifos()
851 tmp = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0)); in dwc3_gadget_resize_tx_fifos()
854 fifo_size |= (fifo_0_start + (dwc->last_fifo_depth << 16)); in dwc3_gadget_resize_tx_fifos()
856 dwc->last_fifo_depth += DWC3_GTXFIFOSIZ_TXFDEP(fifo_size); in dwc3_gadget_resize_tx_fifos()
858 dwc->last_fifo_depth += DWC31_GTXFIFOSIZ_TXFDEP(fifo_size); in dwc3_gadget_resize_tx_fifos()
861 if (dwc->last_fifo_depth >= ram_depth) { in dwc3_gadget_resize_tx_fifos()
862 dev_err(dwc->dev, "Fifosize(%d) > RAM size(%d) %s depth:%d\n", in dwc3_gadget_resize_tx_fifos()
863 dwc->last_fifo_depth, ram_depth, in dwc3_gadget_resize_tx_fifos()
864 dep->endpoint.name, fifo_size); in dwc3_gadget_resize_tx_fifos()
870 dwc->last_fifo_depth -= fifo_size; in dwc3_gadget_resize_tx_fifos()
871 return -ENOMEM; in dwc3_gadget_resize_tx_fifos()
874 dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(dep->number >> 1), fifo_size); in dwc3_gadget_resize_tx_fifos()
875 dep->flags |= DWC3_EP_TXFIFO_RESIZED; in dwc3_gadget_resize_tx_fifos()
876 dwc->num_ep_resized++; in dwc3_gadget_resize_tx_fifos()
882 * __dwc3_gadget_ep_enable - initializes a hw endpoint
891 const struct usb_endpoint_descriptor *desc = dep->endpoint.desc; in __dwc3_gadget_ep_enable()
892 struct dwc3 *dwc = dep->dwc; in __dwc3_gadget_ep_enable()
897 if (!(dep->flags & DWC3_EP_ENABLED)) { in __dwc3_gadget_ep_enable()
907 if (!(dep->flags & DWC3_EP_RESOURCE_ALLOCATED)) { in __dwc3_gadget_ep_enable()
913 if (!(dep->flags & DWC3_EP_ENABLED)) { in __dwc3_gadget_ep_enable()
917 dep->type = usb_endpoint_type(desc); in __dwc3_gadget_ep_enable()
918 dep->flags |= DWC3_EP_ENABLED; in __dwc3_gadget_ep_enable()
920 reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); in __dwc3_gadget_ep_enable()
921 reg |= DWC3_DALEPENA_EP(dep->number); in __dwc3_gadget_ep_enable()
922 dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); in __dwc3_gadget_ep_enable()
924 dep->trb_dequeue = 0; in __dwc3_gadget_ep_enable()
925 dep->trb_enqueue = 0; in __dwc3_gadget_ep_enable()
930 /* Initialize the TRB ring */ in __dwc3_gadget_ep_enable()
931 memset(dep->trb_pool, 0, in __dwc3_gadget_ep_enable()
935 trb_st_hw = &dep->trb_pool[0]; in __dwc3_gadget_ep_enable()
937 trb_link = &dep->trb_pool[DWC3_TRB_NUM - 1]; in __dwc3_gadget_ep_enable()
938 trb_link->bpl = lower_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw)); in __dwc3_gadget_ep_enable()
939 trb_link->bph = upper_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw)); in __dwc3_gadget_ep_enable()
940 trb_link->ctrl |= DWC3_TRBCTL_LINK_TRB; in __dwc3_gadget_ep_enable()
941 trb_link->ctrl |= DWC3_TRB_CTRL_HWO; in __dwc3_gadget_ep_enable()
945 * Issue StartTransfer here with no-op TRB so we can always rely on No in __dwc3_gadget_ep_enable()
956 trb = &dep->trb_pool[0]; in __dwc3_gadget_ep_enable()
968 if (dep->stream_capable) { in __dwc3_gadget_ep_enable()
975 * no-op TRB as normal, but end it immediately. As a in __dwc3_gadget_ep_enable()
993 if (!dep->direction || in __dwc3_gadget_ep_enable()
994 !(dwc->hwparams.hwparams9 & in __dwc3_gadget_ep_enable()
996 dep->flags |= DWC3_EP_FORCE_RESTART_STREAM; in __dwc3_gadget_ep_enable()
1013 if (dep->flags & DWC3_EP_DELAY_STOP) in dwc3_remove_requests()
1016 /* - giveback all requests to gadget driver */ in dwc3_remove_requests()
1017 while (!list_empty(&dep->started_list)) { in dwc3_remove_requests()
1018 req = next_request(&dep->started_list); in dwc3_remove_requests()
1023 while (!list_empty(&dep->pending_list)) { in dwc3_remove_requests()
1024 req = next_request(&dep->pending_list); in dwc3_remove_requests()
1029 while (!list_empty(&dep->cancelled_list)) { in dwc3_remove_requests()
1030 req = next_request(&dep->cancelled_list); in dwc3_remove_requests()
1037 * __dwc3_gadget_ep_disable - disables a hw endpoint
1038 * @dep: the endpoint to disable
1048 struct dwc3 *dwc = dep->dwc; in __dwc3_gadget_ep_disable()
1055 if (dep->flags & DWC3_EP_STALL) in __dwc3_gadget_ep_disable()
1058 reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); in __dwc3_gadget_ep_disable()
1059 reg &= ~DWC3_DALEPENA_EP(dep->number); in __dwc3_gadget_ep_disable()
1060 dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); in __dwc3_gadget_ep_disable()
1062 dwc3_remove_requests(dwc, dep, -ESHUTDOWN); in __dwc3_gadget_ep_disable()
1064 dep->stream_capable = false; in __dwc3_gadget_ep_disable()
1065 dep->type = 0; in __dwc3_gadget_ep_disable()
1072 if (dep->flags & DWC3_EP_DELAY_STOP) in __dwc3_gadget_ep_disable()
1074 dep->flags &= mask; in __dwc3_gadget_ep_disable()
1076 /* Clear out the ep descriptors for non-ep0 */ in __dwc3_gadget_ep_disable()
1077 if (dep->number > 1) { in __dwc3_gadget_ep_disable()
1078 dep->endpoint.comp_desc = NULL; in __dwc3_gadget_ep_disable()
1079 dep->endpoint.desc = NULL; in __dwc3_gadget_ep_disable()
1085 /* -------------------------------------------------------------------------- */
1090 return -EINVAL; in dwc3_gadget_ep0_enable()
1095 return -EINVAL; in dwc3_gadget_ep0_disable()
1098 /* -------------------------------------------------------------------------- */
1108 if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) { in dwc3_gadget_ep_enable()
1110 return -EINVAL; in dwc3_gadget_ep_enable()
1113 if (!desc->wMaxPacketSize) { in dwc3_gadget_ep_enable()
1115 return -EINVAL; in dwc3_gadget_ep_enable()
1119 dwc = dep->dwc; in dwc3_gadget_ep_enable()
1121 if (dev_WARN_ONCE(dwc->dev, dep->flags & DWC3_EP_ENABLED, in dwc3_gadget_ep_enable()
1123 dep->name)) in dwc3_gadget_ep_enable()
1126 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_ep_enable()
1128 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_ep_enable()
1142 return -EINVAL; in dwc3_gadget_ep_disable()
1146 dwc = dep->dwc; in dwc3_gadget_ep_disable()
1148 if (dev_WARN_ONCE(dwc->dev, !(dep->flags & DWC3_EP_ENABLED), in dwc3_gadget_ep_disable()
1150 dep->name)) in dwc3_gadget_ep_disable()
1153 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_ep_disable()
1155 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_ep_disable()
1170 req->direction = dep->direction; in dwc3_gadget_ep_alloc_request()
1171 req->epnum = dep->number; in dwc3_gadget_ep_alloc_request()
1172 req->dep = dep; in dwc3_gadget_ep_alloc_request()
1173 req->status = DWC3_REQUEST_STATUS_UNKNOWN; in dwc3_gadget_ep_alloc_request()
1177 return &req->request; in dwc3_gadget_ep_alloc_request()
1190 * dwc3_ep_prev_trb - returns the previous TRB in the ring
1191 * @dep: The endpoint with the TRB ring
1192 * @index: The index of the current TRB in the ring
1203 tmp = DWC3_TRB_NUM - 1; in dwc3_ep_prev_trb()
1205 return &dep->trb_pool[tmp - 1]; in dwc3_ep_prev_trb()
1213 * If the enqueue & dequeue are equal then the TRB ring is either full in dwc3_calc_trbs_left()
1214 * or empty. It's considered full when there are DWC3_TRB_NUM-1 of TRBs in dwc3_calc_trbs_left()
1217 if (dep->trb_enqueue == dep->trb_dequeue) { in dwc3_calc_trbs_left()
1224 req = next_request(&dep->started_list); in dwc3_calc_trbs_left()
1225 if (req && req->num_trbs) in dwc3_calc_trbs_left()
1228 return DWC3_TRB_NUM - 1; in dwc3_calc_trbs_left()
1231 trbs_left = dep->trb_dequeue - dep->trb_enqueue; in dwc3_calc_trbs_left()
1232 trbs_left &= (DWC3_TRB_NUM - 1); in dwc3_calc_trbs_left()
1234 if (dep->trb_dequeue < dep->trb_enqueue) in dwc3_calc_trbs_left()
1235 trbs_left--; in dwc3_calc_trbs_left()
1241 * dwc3_prepare_one_trb - setup one TRB from one request
1257 unsigned int stream_id = req->request.stream_id; in dwc3_prepare_one_trb()
1258 unsigned int short_not_ok = req->request.short_not_ok; in dwc3_prepare_one_trb()
1259 unsigned int no_interrupt = req->request.no_interrupt; in dwc3_prepare_one_trb()
1260 unsigned int is_last = req->request.is_last; in dwc3_prepare_one_trb()
1261 struct dwc3 *dwc = dep->dwc; in dwc3_prepare_one_trb()
1262 struct usb_gadget *gadget = dwc->gadget; in dwc3_prepare_one_trb()
1263 enum usb_device_speed speed = gadget->speed; in dwc3_prepare_one_trb()
1266 dma = dep->dwc->bounce_addr; in dwc3_prepare_one_trb()
1267 else if (req->request.num_sgs > 0) in dwc3_prepare_one_trb()
1268 dma = sg_dma_address(req->start_sg); in dwc3_prepare_one_trb()
1270 dma = req->request.dma; in dwc3_prepare_one_trb()
1272 trb = &dep->trb_pool[dep->trb_enqueue]; in dwc3_prepare_one_trb()
1274 if (!req->trb) { in dwc3_prepare_one_trb()
1276 req->trb = trb; in dwc3_prepare_one_trb()
1277 req->trb_dma = dwc3_trb_dma_offset(dep, trb); in dwc3_prepare_one_trb()
1280 req->num_trbs++; in dwc3_prepare_one_trb()
1282 trb->size = DWC3_TRB_SIZE_LENGTH(trb_length); in dwc3_prepare_one_trb()
1283 trb->bpl = lower_32_bits(dma); in dwc3_prepare_one_trb()
1284 trb->bph = upper_32_bits(dma); in dwc3_prepare_one_trb()
1286 switch (usb_endpoint_type(dep->endpoint.desc)) { in dwc3_prepare_one_trb()
1288 trb->ctrl = DWC3_TRBCTL_CONTROL_SETUP; in dwc3_prepare_one_trb()
1293 trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST; in dwc3_prepare_one_trb()
1309 * - DATA0 in dwc3_prepare_one_trb()
1312 * - DATA1, DATA0 in dwc3_prepare_one_trb()
1315 * - DATA2, DATA1, DATA0 in dwc3_prepare_one_trb()
1318 struct usb_ep *ep = &dep->endpoint; in dwc3_prepare_one_trb()
1320 unsigned int maxp = usb_endpoint_maxp(ep->desc); in dwc3_prepare_one_trb()
1322 if (req->request.length <= (2 * maxp)) in dwc3_prepare_one_trb()
1323 mult--; in dwc3_prepare_one_trb()
1325 if (req->request.length <= maxp) in dwc3_prepare_one_trb()
1326 mult--; in dwc3_prepare_one_trb()
1328 trb->size |= DWC3_TRB_SIZE_PCM1(mult); in dwc3_prepare_one_trb()
1331 trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS; in dwc3_prepare_one_trb()
1335 trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI; in dwc3_prepare_one_trb()
1340 trb->ctrl = DWC3_TRBCTL_NORMAL; in dwc3_prepare_one_trb()
1347 dev_WARN(dwc->dev, "Unknown endpoint type %d\n", in dwc3_prepare_one_trb()
1348 usb_endpoint_type(dep->endpoint.desc)); in dwc3_prepare_one_trb()
1355 if (usb_endpoint_dir_out(dep->endpoint.desc)) { in dwc3_prepare_one_trb()
1356 if (!dep->stream_capable) in dwc3_prepare_one_trb()
1357 trb->ctrl |= DWC3_TRB_CTRL_CSP; in dwc3_prepare_one_trb()
1360 trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI; in dwc3_prepare_one_trb()
1364 if (dep->stream_capable && DWC3_MST_CAPABLE(&dwc->hwparams)) in dwc3_prepare_one_trb()
1365 trb->ctrl |= DWC3_TRB_CTRL_CSP; in dwc3_prepare_one_trb()
1368 trb->ctrl |= DWC3_TRB_CTRL_IOC; in dwc3_prepare_one_trb()
1371 trb->ctrl |= DWC3_TRB_CTRL_CHN; in dwc3_prepare_one_trb()
1372 else if (dep->stream_capable && is_last && in dwc3_prepare_one_trb()
1373 !DWC3_MST_CAPABLE(&dwc->hwparams)) in dwc3_prepare_one_trb()
1374 trb->ctrl |= DWC3_TRB_CTRL_LST; in dwc3_prepare_one_trb()
1376 if (usb_endpoint_xfer_bulk(dep->endpoint.desc) && dep->stream_capable) in dwc3_prepare_one_trb()
1377 trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(stream_id); in dwc3_prepare_one_trb()
1387 * However there is a possibility of CPU re-ordering here which can cause in dwc3_prepare_one_trb()
1389 * Add a write memory barrier to prevent CPU re-ordering. in dwc3_prepare_one_trb()
1392 trb->ctrl |= DWC3_TRB_CTRL_HWO; in dwc3_prepare_one_trb()
1401 unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc); in dwc3_needs_extra_trb()
1402 unsigned int rem = req->request.length % maxp; in dwc3_needs_extra_trb()
1404 if ((req->request.length && req->request.zero && !rem && in dwc3_needs_extra_trb()
1405 !usb_endpoint_xfer_isoc(dep->endpoint.desc)) || in dwc3_needs_extra_trb()
1406 (!req->direction && rem)) in dwc3_needs_extra_trb()
1413 * dwc3_prepare_last_sg - prepare TRBs for the last SG entry
1425 unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc); in dwc3_prepare_last_sg()
1426 unsigned int rem = req->request.length % maxp; in dwc3_prepare_last_sg()
1435 req->needs_extra_trb = num_trbs > 1; in dwc3_prepare_last_sg()
1438 if (req->direction || req->request.length) in dwc3_prepare_last_sg()
1440 req->needs_extra_trb, node, false, false); in dwc3_prepare_last_sg()
1443 if ((!req->direction && !req->request.length) || req->needs_extra_trb) in dwc3_prepare_last_sg()
1445 req->direction ? 0 : maxp - rem, in dwc3_prepare_last_sg()
1454 struct scatterlist *sg = req->start_sg; in dwc3_prepare_trbs_sg()
1457 unsigned int length = req->request.length; in dwc3_prepare_trbs_sg()
1458 unsigned int remaining = req->num_pending_sgs; in dwc3_prepare_trbs_sg()
1459 unsigned int num_queued_sgs = req->request.num_mapped_sgs - remaining; in dwc3_prepare_trbs_sg()
1460 unsigned int num_trbs = req->num_trbs; in dwc3_prepare_trbs_sg()
1467 for_each_sg(req->request.sg, s, num_queued_sgs, i) in dwc3_prepare_trbs_sg()
1468 length -= sg_dma_len(s); in dwc3_prepare_trbs_sg()
1478 length -= trb_length; in dwc3_prepare_trbs_sg()
1487 if ((i == remaining - 1) || !length) in dwc3_prepare_trbs_sg()
1509 list_for_each_entry(r, &dep->started_list, list) { in dwc3_prepare_trbs_sg()
1510 if (r != req && !r->request.no_interrupt) in dwc3_prepare_trbs_sg()
1530 req->start_sg = sg_next(s); in dwc3_prepare_trbs_sg()
1532 req->num_queued_sgs++; in dwc3_prepare_trbs_sg()
1533 req->num_pending_sgs--; in dwc3_prepare_trbs_sg()
1541 req->num_pending_sgs = 0; in dwc3_prepare_trbs_sg()
1549 return req->num_trbs - num_trbs; in dwc3_prepare_trbs_sg()
1555 return dwc3_prepare_last_sg(dep, req, req->request.length, 0); in dwc3_prepare_trbs_linear()
1559 * dwc3_prepare_trbs - setup TRBs from requests
1585 list_for_each_entry(req, &dep->started_list, list) { in dwc3_prepare_trbs()
1586 if (req->num_pending_sgs > 0) { in dwc3_prepare_trbs()
1588 if (!ret || req->num_pending_sgs) in dwc3_prepare_trbs()
1600 if (dep->stream_capable && req->request.is_last && in dwc3_prepare_trbs()
1601 !DWC3_MST_CAPABLE(&dep->dwc->hwparams)) in dwc3_prepare_trbs()
1605 list_for_each_entry_safe(req, n, &dep->pending_list, list) { in dwc3_prepare_trbs()
1606 struct dwc3 *dwc = dep->dwc; in dwc3_prepare_trbs()
1608 ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request, in dwc3_prepare_trbs()
1609 dep->direction); in dwc3_prepare_trbs()
1613 req->sg = req->request.sg; in dwc3_prepare_trbs()
1614 req->start_sg = req->sg; in dwc3_prepare_trbs()
1615 req->num_queued_sgs = 0; in dwc3_prepare_trbs()
1616 req->num_pending_sgs = req->request.num_mapped_sgs; in dwc3_prepare_trbs()
1618 if (req->num_pending_sgs > 0) { in dwc3_prepare_trbs()
1620 if (req->num_pending_sgs) in dwc3_prepare_trbs()
1634 if (dep->stream_capable && req->request.is_last && in dwc3_prepare_trbs()
1635 !DWC3_MST_CAPABLE(&dwc->hwparams)) in dwc3_prepare_trbs()
1661 starting = !(dep->flags & DWC3_EP_TRANSFER_STARTED); in __dwc3_gadget_kick_transfer()
1670 req = next_request(&dep->started_list); in __dwc3_gadget_kick_transfer()
1672 dep->flags |= DWC3_EP_PENDING_REQUEST; in __dwc3_gadget_kick_transfer()
1679 params.param0 = upper_32_bits(req->trb_dma); in __dwc3_gadget_kick_transfer()
1680 params.param1 = lower_32_bits(req->trb_dma); in __dwc3_gadget_kick_transfer()
1683 if (dep->stream_capable) in __dwc3_gadget_kick_transfer()
1684 cmd |= DWC3_DEPCMD_PARAM(req->request.stream_id); in __dwc3_gadget_kick_transfer()
1686 if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) in __dwc3_gadget_kick_transfer()
1687 cmd |= DWC3_DEPCMD_PARAM(dep->frame_number); in __dwc3_gadget_kick_transfer()
1690 DWC3_DEPCMD_PARAM(dep->resource_index); in __dwc3_gadget_kick_transfer()
1697 if (ret == -EAGAIN) in __dwc3_gadget_kick_transfer()
1702 list_for_each_entry_safe(req, tmp, &dep->started_list, list) in __dwc3_gadget_kick_transfer()
1706 if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING)) in __dwc3_gadget_kick_transfer()
1712 if (dep->stream_capable && req->request.is_last && in __dwc3_gadget_kick_transfer()
1713 !DWC3_MST_CAPABLE(&dep->dwc->hwparams)) in __dwc3_gadget_kick_transfer()
1714 dep->flags |= DWC3_EP_WAIT_TRANSFER_COMPLETE; in __dwc3_gadget_kick_transfer()
1723 reg = dwc3_readl(dwc->regs, DWC3_DSTS); in __dwc3_gadget_get_frame()
1728 * __dwc3_stop_active_transfer - stop the current active transfer
1747 cmd |= DWC3_DEPCMD_PARAM(dep->resource_index); in __dwc3_stop_active_transfer()
1756 if (ret == -ETIMEDOUT && dep->dwc->ep0state != EP0_SETUP_PHASE) { in __dwc3_stop_active_transfer()
1757 dep->flags |= DWC3_EP_DELAY_STOP; in __dwc3_stop_active_transfer()
1761 dep->resource_index = 0; in __dwc3_stop_active_transfer()
1764 dep->flags &= ~DWC3_EP_TRANSFER_STARTED; in __dwc3_stop_active_transfer()
1766 dep->flags |= DWC3_EP_END_TRANSFER_PENDING; in __dwc3_stop_active_transfer()
1768 dep->flags &= ~DWC3_EP_DELAY_STOP; in __dwc3_stop_active_transfer()
1773 * dwc3_gadget_start_isoc_quirk - workaround invalid frame number
1776 * This function tests for the correct combination of BIT[15:14] from the 16-bit
1780 * In DWC_usb31 version 1.70a-ea06 and prior, for highspeed and fullspeed
1781 * isochronous IN, BIT[15:14] of the 16-bit microframe number reported by the
1785 * internal 16-bit microframe, the START TRANSFER command will pass and the
1788 * other conditions, the START TRANSFER command will fail with bus-expiry.
1793 * (or 2 seconds). 4 seconds into the future will result in a bus-expiry status.
1796 * command status will result in a 2-second delay start. The smaller BIT[15:14]
1820 while (dep->combo_num < 2) { in dwc3_gadget_start_isoc_quirk()
1827 * 4 uframes in the future with BIT[15:14] as dep->combo_num in dwc3_gadget_start_isoc_quirk()
1829 test_frame_number = dep->frame_number & DWC3_FRNUMBER_MASK; in dwc3_gadget_start_isoc_quirk()
1830 test_frame_number |= dep->combo_num << 14; in dwc3_gadget_start_isoc_quirk()
1831 test_frame_number += max_t(u32, 4, dep->interval); in dwc3_gadget_start_isoc_quirk()
1833 params.param0 = upper_32_bits(dep->dwc->bounce_addr); in dwc3_gadget_start_isoc_quirk()
1834 params.param1 = lower_32_bits(dep->dwc->bounce_addr); in dwc3_gadget_start_isoc_quirk()
1840 /* Redo if some other failure beside bus-expiry is received */ in dwc3_gadget_start_isoc_quirk()
1841 if (cmd_status && cmd_status != -EAGAIN) { in dwc3_gadget_start_isoc_quirk()
1842 dep->start_cmd_status = 0; in dwc3_gadget_start_isoc_quirk()
1843 dep->combo_num = 0; in dwc3_gadget_start_isoc_quirk()
1848 if (dep->combo_num == 0) in dwc3_gadget_start_isoc_quirk()
1849 dep->start_cmd_status = cmd_status; in dwc3_gadget_start_isoc_quirk()
1851 dep->combo_num++; in dwc3_gadget_start_isoc_quirk()
1864 test0 = (dep->start_cmd_status == 0); in dwc3_gadget_start_isoc_quirk()
1868 dep->combo_num = 1; in dwc3_gadget_start_isoc_quirk()
1870 dep->combo_num = 2; in dwc3_gadget_start_isoc_quirk()
1872 dep->combo_num = 3; in dwc3_gadget_start_isoc_quirk()
1874 dep->combo_num = 0; in dwc3_gadget_start_isoc_quirk()
1876 dep->frame_number &= DWC3_FRNUMBER_MASK; in dwc3_gadget_start_isoc_quirk()
1877 dep->frame_number |= dep->combo_num << 14; in dwc3_gadget_start_isoc_quirk()
1878 dep->frame_number += max_t(u32, 4, dep->interval); in dwc3_gadget_start_isoc_quirk()
1881 dep->start_cmd_status = 0; in dwc3_gadget_start_isoc_quirk()
1882 dep->combo_num = 0; in dwc3_gadget_start_isoc_quirk()
1889 const struct usb_endpoint_descriptor *desc = dep->endpoint.desc; in __dwc3_gadget_start_isoc()
1890 struct dwc3 *dwc = dep->dwc; in __dwc3_gadget_start_isoc()
1894 if (list_empty(&dep->pending_list) && in __dwc3_gadget_start_isoc()
1895 list_empty(&dep->started_list)) { in __dwc3_gadget_start_isoc()
1896 dep->flags |= DWC3_EP_PENDING_REQUEST; in __dwc3_gadget_start_isoc()
1897 return -EAGAIN; in __dwc3_gadget_start_isoc()
1900 if (!dwc->dis_start_transfer_quirk && in __dwc3_gadget_start_isoc()
1903 if (dwc->gadget->speed <= USB_SPEED_HIGH && dep->direction) in __dwc3_gadget_start_isoc()
1907 if (desc->bInterval <= 14 && in __dwc3_gadget_start_isoc()
1908 dwc->gadget->speed >= USB_SPEED_HIGH) { in __dwc3_gadget_start_isoc()
1911 (dep->frame_number & DWC3_FRNUMBER_MASK); in __dwc3_gadget_start_isoc()
1922 dep->frame_number = (dep->frame_number & ~DWC3_FRNUMBER_MASK) | in __dwc3_gadget_start_isoc()
1925 dep->frame_number += BIT(14); in __dwc3_gadget_start_isoc()
1932 if (desc->bInterval < 3) in __dwc3_gadget_start_isoc()
1933 future_interval += 3 - desc->bInterval; in __dwc3_gadget_start_isoc()
1935 dep->frame_number = DWC3_ALIGN_FRAME(dep, future_interval); in __dwc3_gadget_start_isoc()
1938 if (ret != -EAGAIN) in __dwc3_gadget_start_isoc()
1943 * After a number of unsuccessful start attempts due to bus-expiry in __dwc3_gadget_start_isoc()
1947 if (ret == -EAGAIN) in __dwc3_gadget_start_isoc()
1955 struct dwc3 *dwc = dep->dwc; in __dwc3_gadget_ep_queue()
1957 if (!dep->endpoint.desc || !dwc->pullups_connected || !dwc->connected) { in __dwc3_gadget_ep_queue()
1958 dev_dbg(dwc->dev, "%s: can't queue to disabled endpoint\n", in __dwc3_gadget_ep_queue()
1959 dep->name); in __dwc3_gadget_ep_queue()
1960 return -ESHUTDOWN; in __dwc3_gadget_ep_queue()
1963 if (WARN(req->dep != dep, "request %pK belongs to '%s'\n", in __dwc3_gadget_ep_queue()
1964 &req->request, req->dep->name)) in __dwc3_gadget_ep_queue()
1965 return -EINVAL; in __dwc3_gadget_ep_queue()
1967 if (WARN(req->status < DWC3_REQUEST_STATUS_COMPLETED, in __dwc3_gadget_ep_queue()
1969 dep->name, &req->request)) in __dwc3_gadget_ep_queue()
1970 return -EINVAL; in __dwc3_gadget_ep_queue()
1972 pm_runtime_get(dwc->dev); in __dwc3_gadget_ep_queue()
1974 req->request.actual = 0; in __dwc3_gadget_ep_queue()
1975 req->request.status = -EINPROGRESS; in __dwc3_gadget_ep_queue()
1979 list_add_tail(&req->list, &dep->pending_list); in __dwc3_gadget_ep_queue()
1980 req->status = DWC3_REQUEST_STATUS_QUEUED; in __dwc3_gadget_ep_queue()
1982 if (dep->flags & DWC3_EP_WAIT_TRANSFER_COMPLETE) in __dwc3_gadget_ep_queue()
1989 if ((dep->flags & DWC3_EP_END_TRANSFER_PENDING) || in __dwc3_gadget_ep_queue()
1990 (dep->flags & DWC3_EP_WEDGE) || in __dwc3_gadget_ep_queue()
1991 (dep->flags & DWC3_EP_DELAY_STOP) || in __dwc3_gadget_ep_queue()
1992 (dep->flags & DWC3_EP_STALL)) { in __dwc3_gadget_ep_queue()
1993 dep->flags |= DWC3_EP_DELAY_START; in __dwc3_gadget_ep_queue()
2000 * (micro-)frame number. in __dwc3_gadget_ep_queue()
2005 if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { in __dwc3_gadget_ep_queue()
2006 if (!(dep->flags & DWC3_EP_TRANSFER_STARTED)) { in __dwc3_gadget_ep_queue()
2007 if ((dep->flags & DWC3_EP_PENDING_REQUEST)) in __dwc3_gadget_ep_queue()
2024 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_ep_queue()
2030 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_ep_queue()
2032 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_ep_queue()
2041 /* If req->trb is not set, then the request has not started */ in dwc3_gadget_ep_skip_trbs()
2042 if (!req->trb) in dwc3_gadget_ep_skip_trbs()
2055 for (i = 0; i < req->num_trbs; i++) { in dwc3_gadget_ep_skip_trbs()
2058 trb = &dep->trb_pool[dep->trb_dequeue]; in dwc3_gadget_ep_skip_trbs()
2059 trb->ctrl &= ~DWC3_TRB_CTRL_HWO; in dwc3_gadget_ep_skip_trbs()
2063 req->num_trbs = 0; in dwc3_gadget_ep_skip_trbs()
2069 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_ep_cleanup_cancelled_requests()
2071 while (!list_empty(&dep->cancelled_list)) { in dwc3_gadget_ep_cleanup_cancelled_requests()
2072 req = next_request(&dep->cancelled_list); in dwc3_gadget_ep_cleanup_cancelled_requests()
2074 switch (req->status) { in dwc3_gadget_ep_cleanup_cancelled_requests()
2076 dwc3_gadget_giveback(dep, req, -ESHUTDOWN); in dwc3_gadget_ep_cleanup_cancelled_requests()
2079 dwc3_gadget_giveback(dep, req, -ECONNRESET); in dwc3_gadget_ep_cleanup_cancelled_requests()
2082 dwc3_gadget_giveback(dep, req, -EPIPE); in dwc3_gadget_ep_cleanup_cancelled_requests()
2085 dev_err(dwc->dev, "request cancelled with wrong reason:%d\n", req->status); in dwc3_gadget_ep_cleanup_cancelled_requests()
2086 dwc3_gadget_giveback(dep, req, -ECONNRESET); in dwc3_gadget_ep_cleanup_cancelled_requests()
2093 if (!dep->endpoint.desc) in dwc3_gadget_ep_cleanup_cancelled_requests()
2105 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_ep_dequeue()
2112 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_ep_dequeue()
2114 list_for_each_entry(r, &dep->cancelled_list, list) { in dwc3_gadget_ep_dequeue()
2119 list_for_each_entry(r, &dep->pending_list, list) { in dwc3_gadget_ep_dequeue()
2128 if (dep->number > 1) in dwc3_gadget_ep_dequeue()
2129 dwc3_gadget_giveback(dep, req, -ECONNRESET); in dwc3_gadget_ep_dequeue()
2136 list_for_each_entry(r, &dep->started_list, list) { in dwc3_gadget_ep_dequeue()
2147 list_for_each_entry_safe(r, t, &dep->started_list, list) in dwc3_gadget_ep_dequeue()
2151 dep->flags &= ~DWC3_EP_WAIT_TRANSFER_COMPLETE; in dwc3_gadget_ep_dequeue()
2157 dev_err(dwc->dev, "request %pK was not queued to %s\n", in dwc3_gadget_ep_dequeue()
2158 request, ep->name); in dwc3_gadget_ep_dequeue()
2159 ret = -EINVAL; in dwc3_gadget_ep_dequeue()
2161 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_ep_dequeue()
2169 struct dwc3 *dwc = dep->dwc; in __dwc3_gadget_ep_set_halt()
2174 if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { in __dwc3_gadget_ep_set_halt()
2175 dev_err(dwc->dev, "%s is of Isochronous type\n", dep->name); in __dwc3_gadget_ep_set_halt()
2176 return -EINVAL; in __dwc3_gadget_ep_set_halt()
2187 if (dep->number > 1) in __dwc3_gadget_ep_set_halt()
2188 trb = dwc3_ep_prev_trb(dep, dep->trb_enqueue); in __dwc3_gadget_ep_set_halt()
2190 trb = &dwc->ep0_trb[dep->trb_enqueue]; in __dwc3_gadget_ep_set_halt()
2192 transfer_in_flight = trb->ctrl & DWC3_TRB_CTRL_HWO; in __dwc3_gadget_ep_set_halt()
2193 started = !list_empty(&dep->started_list); in __dwc3_gadget_ep_set_halt()
2195 if (!protocol && ((dep->direction && transfer_in_flight) || in __dwc3_gadget_ep_set_halt()
2196 (!dep->direction && started))) { in __dwc3_gadget_ep_set_halt()
2197 return -EAGAIN; in __dwc3_gadget_ep_set_halt()
2203 dev_err(dwc->dev, "failed to set STALL on %s\n", in __dwc3_gadget_ep_set_halt()
2204 dep->name); in __dwc3_gadget_ep_set_halt()
2206 dep->flags |= DWC3_EP_STALL; in __dwc3_gadget_ep_set_halt()
2213 if (dep->number <= 1) { in __dwc3_gadget_ep_set_halt()
2214 dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE); in __dwc3_gadget_ep_set_halt()
2220 list_for_each_entry_safe(req, tmp, &dep->started_list, list) in __dwc3_gadget_ep_set_halt()
2223 if (dep->flags & DWC3_EP_END_TRANSFER_PENDING || in __dwc3_gadget_ep_set_halt()
2224 (dep->flags & DWC3_EP_DELAY_STOP)) { in __dwc3_gadget_ep_set_halt()
2225 dep->flags |= DWC3_EP_PENDING_CLEAR_STALL; in __dwc3_gadget_ep_set_halt()
2227 dwc->clear_stall_protocol = dep->number; in __dwc3_gadget_ep_set_halt()
2236 dev_err(dwc->dev, "failed to clear STALL on %s\n", in __dwc3_gadget_ep_set_halt()
2237 dep->name); in __dwc3_gadget_ep_set_halt()
2241 dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE); in __dwc3_gadget_ep_set_halt()
2243 if ((dep->flags & DWC3_EP_DELAY_START) && in __dwc3_gadget_ep_set_halt()
2244 !usb_endpoint_xfer_isoc(dep->endpoint.desc)) in __dwc3_gadget_ep_set_halt()
2247 dep->flags &= ~DWC3_EP_DELAY_START; in __dwc3_gadget_ep_set_halt()
2256 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_ep_set_halt()
2262 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_ep_set_halt()
2264 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_ep_set_halt()
2272 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_ep_set_wedge()
2276 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_ep_set_wedge()
2277 dep->flags |= DWC3_EP_WEDGE; in dwc3_gadget_ep_set_wedge()
2279 if (dep->number == 0 || dep->number == 1) in dwc3_gadget_ep_set_wedge()
2283 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_ep_set_wedge()
2288 /* -------------------------------------------------------------------------- */
2298 .disable = dwc3_gadget_ep0_disable,
2309 .disable = dwc3_gadget_ep_disable,
2318 /* -------------------------------------------------------------------------- */
2327 reg = dwc3_readl(dwc->regs, DWC3_DEVTEN); in dwc3_gadget_enable_linksts_evts()
2333 dwc3_writel(dwc->regs, DWC3_DEVTEN, reg); in dwc3_gadget_enable_linksts_evts()
2358 reg = dwc3_readl(dwc->regs, DWC3_DSTS); in __dwc3_gadget_wakeup()
2371 return -EINVAL; in __dwc3_gadget_wakeup()
2379 dev_err(dwc->dev, "failed to put link in Recovery\n"); in __dwc3_gadget_wakeup()
2387 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in __dwc3_gadget_wakeup()
2389 dwc3_writel(dwc->regs, DWC3_DCTL, reg); in __dwc3_gadget_wakeup()
2402 while (retries--) { in __dwc3_gadget_wakeup()
2403 reg = dwc3_readl(dwc->regs, DWC3_DSTS); in __dwc3_gadget_wakeup()
2411 dev_err(dwc->dev, "failed to send remote wakeup\n"); in __dwc3_gadget_wakeup()
2412 return -EINVAL; in __dwc3_gadget_wakeup()
2424 if (!dwc->wakeup_configured) { in dwc3_gadget_wakeup()
2425 dev_err(dwc->dev, "remote wakeup not configured\n"); in dwc3_gadget_wakeup()
2426 return -EINVAL; in dwc3_gadget_wakeup()
2429 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_wakeup()
2430 if (!dwc->gadget->wakeup_armed) { in dwc3_gadget_wakeup()
2431 dev_err(dwc->dev, "not armed for remote wakeup\n"); in dwc3_gadget_wakeup()
2432 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_wakeup()
2433 return -EINVAL; in dwc3_gadget_wakeup()
2437 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_wakeup()
2451 if (!dwc->wakeup_configured) { in dwc3_gadget_func_wakeup()
2452 dev_err(dwc->dev, "remote wakeup not configured\n"); in dwc3_gadget_func_wakeup()
2453 return -EINVAL; in dwc3_gadget_func_wakeup()
2456 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_func_wakeup()
2465 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_func_wakeup()
2466 return -EINVAL; in dwc3_gadget_func_wakeup()
2469 dwc->suspended = false; in dwc3_gadget_func_wakeup()
2470 dwc->link_state = DWC3_LINK_STATE_U0; in dwc3_gadget_func_wakeup()
2477 dev_err(dwc->dev, "function remote wakeup failed, ret:%d\n", ret); in dwc3_gadget_func_wakeup()
2479 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_func_wakeup()
2489 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_set_remote_wakeup()
2490 dwc->wakeup_configured = !!set; in dwc3_gadget_set_remote_wakeup()
2491 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_set_remote_wakeup()
2502 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_set_selfpowered()
2503 g->is_selfpowered = !!is_selfpowered; in dwc3_gadget_set_selfpowered()
2504 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_set_selfpowered()
2513 for (epnum = 2; epnum < dwc->num_eps; epnum++) { in dwc3_stop_active_transfers()
2516 dep = dwc->eps[epnum]; in dwc3_stop_active_transfers()
2520 dwc3_remove_requests(dwc, dep, -ESHUTDOWN); in dwc3_stop_active_transfers()
2526 enum usb_ssp_rate ssp_rate = dwc->gadget_ssp_rate; in __dwc3_gadget_set_ssp_rate()
2530 ssp_rate = dwc->max_ssp_rate; in __dwc3_gadget_set_ssp_rate()
2532 reg = dwc3_readl(dwc->regs, DWC3_DCFG); in __dwc3_gadget_set_ssp_rate()
2538 else if (dwc->max_ssp_rate != USB_SSP_GEN_1x2) in __dwc3_gadget_set_ssp_rate()
2542 dwc->max_ssp_rate != USB_SSP_GEN_2x1) in __dwc3_gadget_set_ssp_rate()
2545 dwc3_writel(dwc->regs, DWC3_DCFG, reg); in __dwc3_gadget_set_ssp_rate()
2553 speed = dwc->gadget_max_speed; in __dwc3_gadget_set_speed()
2554 if (speed == USB_SPEED_UNKNOWN || speed > dwc->maximum_speed) in __dwc3_gadget_set_speed()
2555 speed = dwc->maximum_speed; in __dwc3_gadget_set_speed()
2563 reg = dwc3_readl(dwc->regs, DWC3_DCFG); in __dwc3_gadget_set_speed()
2569 * bit if we try to force the IP to USB2-only mode. in __dwc3_gadget_set_speed()
2580 !dwc->dis_metastability_quirk) { in __dwc3_gadget_set_speed()
2600 dev_err(dwc->dev, "invalid speed (%d)\n", speed); in __dwc3_gadget_set_speed()
2614 dwc3_writel(dwc->regs, DWC3_DCFG, reg); in __dwc3_gadget_set_speed()
2622 if (pm_runtime_suspended(dwc->dev)) in dwc3_gadget_run_stop()
2625 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_run_stop()
2637 dwc->pullups_connected = true; in dwc3_gadget_run_stop()
2641 dwc->pullups_connected = false; in dwc3_gadget_run_stop()
2648 reg = dwc3_readl(dwc->regs, DWC3_DSTS); in dwc3_gadget_run_stop()
2650 } while (--timeout && !(!is_on ^ !reg)); in dwc3_gadget_run_stop()
2653 return -ETIMEDOUT; in dwc3_gadget_run_stop()
2667 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_soft_disconnect()
2668 if (!dwc->pullups_connected) { in dwc3_gadget_soft_disconnect()
2669 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_soft_disconnect()
2673 dwc->connected = false; in dwc3_gadget_soft_disconnect()
2679 if (dwc->delayed_status) in dwc3_gadget_soft_disconnect()
2684 * Section 4.1.8 Table 4-7, it states that for a device-initiated in dwc3_gadget_soft_disconnect()
2690 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_soft_disconnect()
2699 if (dwc->ep0state != EP0_SETUP_PHASE) { in dwc3_gadget_soft_disconnect()
2700 reinit_completion(&dwc->ep0_in_setup); in dwc3_gadget_soft_disconnect()
2702 ret = wait_for_completion_timeout(&dwc->ep0_in_setup, in dwc3_gadget_soft_disconnect()
2705 dev_warn(dwc->dev, "wait for SETUP phase timed out\n"); in dwc3_gadget_soft_disconnect()
2706 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_soft_disconnect()
2708 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_soft_disconnect()
2727 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_soft_disconnect()
2729 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_soft_disconnect()
2741 * device-initiated disconnect requires a core soft reset in dwc3_gadget_soft_connect()
2760 dwc->softconnect = is_on; in dwc3_gadget_pullup()
2768 pm_runtime_barrier(dwc->dev); in dwc3_gadget_pullup()
2769 if (pm_runtime_suspended(dwc->dev)) in dwc3_gadget_pullup()
2778 ret = pm_runtime_get_sync(dwc->dev); in dwc3_gadget_pullup()
2780 pm_runtime_put(dwc->dev); in dwc3_gadget_pullup()
2782 pm_runtime_set_suspended(dwc->dev); in dwc3_gadget_pullup()
2786 if (dwc->pullups_connected == is_on) { in dwc3_gadget_pullup()
2787 pm_runtime_put(dwc->dev); in dwc3_gadget_pullup()
2791 synchronize_irq(dwc->irq_gadget); in dwc3_gadget_pullup()
2798 pm_runtime_put(dwc->dev); in dwc3_gadget_pullup()
2819 /* On 2.30a and above this bit enables U3/L2-L1 Suspend Events */ in dwc3_gadget_enable_irq()
2823 dwc3_writel(dwc->regs, DWC3_DEVTEN, reg); in dwc3_gadget_enable_irq()
2829 dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00); in dwc3_gadget_disable_irq()
2836 * dwc3_gadget_setup_nump - calculate and initialize NUMP field of %DWC3_DCFG
2849 * RxFIFO Size = (RAM2_DEPTH * MDWIDTH / 8) - 24 - 16;
2863 ram2_depth = DWC3_GHWPARAMS7_RAM2_DEPTH(dwc->hwparams.hwparams7); in dwc3_gadget_setup_nump()
2866 nump = ((ram2_depth * mdwidth / 8) - 24 - 16) / 1024; in dwc3_gadget_setup_nump()
2870 reg = dwc3_readl(dwc->regs, DWC3_DCFG); in dwc3_gadget_setup_nump()
2873 dwc3_writel(dwc->regs, DWC3_DCFG, reg); in dwc3_gadget_setup_nump()
2883 * Use IMOD if enabled via dwc->imod_interval. Otherwise, if in __dwc3_gadget_start()
2884 * the core supports IMOD, disable it. in __dwc3_gadget_start()
2886 if (dwc->imod_interval) { in __dwc3_gadget_start()
2887 dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), dwc->imod_interval); in __dwc3_gadget_start()
2888 dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), DWC3_GEVNTCOUNT_EHB); in __dwc3_gadget_start()
2890 dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), 0); in __dwc3_gadget_start()
2900 reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG); in __dwc3_gadget_start()
2906 dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg); in __dwc3_gadget_start()
2917 reg = dwc3_readl(dwc->regs, DWC3_DCFG); in __dwc3_gadget_start()
2919 dwc3_writel(dwc->regs, DWC3_DCFG, reg); in __dwc3_gadget_start()
2922 if (DWC3_MST_CAPABLE(&dwc->hwparams)) { in __dwc3_gadget_start()
2923 reg = dwc3_readl(dwc->regs, DWC3_DCFG1); in __dwc3_gadget_start()
2925 dwc3_writel(dwc->regs, DWC3_DCFG1, reg); in __dwc3_gadget_start()
2933 dev_err(dwc->dev, "failed to config endpoints\n"); in __dwc3_gadget_start()
2937 dep = dwc->eps[0]; in __dwc3_gadget_start()
2938 dep->flags = 0; in __dwc3_gadget_start()
2941 dev_err(dwc->dev, "failed to enable %s\n", dep->name); in __dwc3_gadget_start()
2945 dep = dwc->eps[1]; in __dwc3_gadget_start()
2946 dep->flags = 0; in __dwc3_gadget_start()
2949 dev_err(dwc->dev, "failed to enable %s\n", dep->name); in __dwc3_gadget_start()
2954 dwc->ep0state = EP0_SETUP_PHASE; in __dwc3_gadget_start()
2955 dwc->ep0_bounced = false; in __dwc3_gadget_start()
2956 dwc->link_state = DWC3_LINK_STATE_SS_DIS; in __dwc3_gadget_start()
2957 dwc->delayed_status = false; in __dwc3_gadget_start()
2966 __dwc3_gadget_ep_disable(dwc->eps[0]); in __dwc3_gadget_start()
2980 irq = dwc->irq_gadget; in dwc3_gadget_start()
2982 IRQF_SHARED, "dwc3", dwc->ev_buf); in dwc3_gadget_start()
2984 dev_err(dwc->dev, "failed to request irq #%d --> %d\n", in dwc3_gadget_start()
2989 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_start()
2990 dwc->gadget_driver = driver; in dwc3_gadget_start()
2991 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_start()
2993 if (dwc->sys_wakeup) in dwc3_gadget_start()
2994 device_wakeup_enable(dwc->sysdev); in dwc3_gadget_start()
3002 __dwc3_gadget_ep_disable(dwc->eps[0]); in __dwc3_gadget_stop()
3003 __dwc3_gadget_ep_disable(dwc->eps[1]); in __dwc3_gadget_stop()
3011 if (dwc->sys_wakeup) in dwc3_gadget_stop()
3012 device_wakeup_disable(dwc->sysdev); in dwc3_gadget_stop()
3014 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_stop()
3015 dwc->gadget_driver = NULL; in dwc3_gadget_stop()
3016 dwc->max_cfg_eps = 0; in dwc3_gadget_stop()
3017 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_stop()
3019 free_irq(dwc->irq_gadget, dwc->ev_buf); in dwc3_gadget_stop()
3029 params->besl_baseline = USB_DEFAULT_BESL_UNSPECIFIED; in dwc3_gadget_config_params()
3030 params->besl_deep = USB_DEFAULT_BESL_UNSPECIFIED; in dwc3_gadget_config_params()
3033 if (!dwc->dis_enblslpm_quirk) { in dwc3_gadget_config_params()
3043 params->besl_baseline = 1; in dwc3_gadget_config_params()
3044 if (dwc->is_utmi_l1_suspend) in dwc3_gadget_config_params()
3045 params->besl_deep = in dwc3_gadget_config_params()
3046 clamp_t(u8, dwc->hird_threshold, 2, 15); in dwc3_gadget_config_params()
3050 if (dwc->dis_u1_entry_quirk) in dwc3_gadget_config_params()
3051 params->bU1devExitLat = 0; in dwc3_gadget_config_params()
3053 params->bU1devExitLat = DWC3_DEFAULT_U1_DEV_EXIT_LAT; in dwc3_gadget_config_params()
3056 if (dwc->dis_u2_entry_quirk) in dwc3_gadget_config_params()
3057 params->bU2DevExitLat = 0; in dwc3_gadget_config_params()
3059 params->bU2DevExitLat = in dwc3_gadget_config_params()
3069 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_set_speed()
3070 dwc->gadget_max_speed = speed; in dwc3_gadget_set_speed()
3071 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_set_speed()
3080 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_set_ssp_rate()
3081 dwc->gadget_max_speed = USB_SPEED_SUPER_PLUS; in dwc3_gadget_set_ssp_rate()
3082 dwc->gadget_ssp_rate = rate; in dwc3_gadget_set_ssp_rate()
3083 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_set_ssp_rate()
3092 if (dwc->usb2_phy) in dwc3_gadget_vbus_draw()
3093 return usb_phy_set_power(dwc->usb2_phy, mA); in dwc3_gadget_vbus_draw()
3095 if (!dwc->usb_psy) in dwc3_gadget_vbus_draw()
3096 return -EOPNOTSUPP; in dwc3_gadget_vbus_draw()
3099 ret = power_supply_set_property(dwc->usb_psy, POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, &val); in dwc3_gadget_vbus_draw()
3105 * dwc3_gadget_check_config - ensure dwc3 can support the USB configuration
3122 if (!dwc->do_fifo_resize) in dwc3_gadget_check_config()
3125 list_for_each_entry(ep, &g->ep_list, ep_list) { in dwc3_gadget_check_config()
3127 if (ep->claimed && (ep->address & USB_DIR_IN)) in dwc3_gadget_check_config()
3131 if (ep_num <= dwc->max_cfg_eps) in dwc3_gadget_check_config()
3135 dwc->max_cfg_eps = ep_num; in dwc3_gadget_check_config()
3137 fifo_size = dwc3_gadget_calc_tx_fifo_size(dwc, dwc->max_cfg_eps); in dwc3_gadget_check_config()
3139 fifo_size += dwc->max_cfg_eps; in dwc3_gadget_check_config()
3144 return -ENOMEM; in dwc3_gadget_check_config()
3154 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_async_callbacks()
3155 dwc->async_callbacks = enable; in dwc3_gadget_async_callbacks()
3156 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_async_callbacks()
3165 .pullup = dwc3_gadget_pullup,
3176 /* -------------------------------------------------------------------------- */
3180 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_init_control_endpoint()
3182 usb_ep_set_maxpacket_limit(&dep->endpoint, 512); in dwc3_gadget_init_control_endpoint()
3183 dep->endpoint.maxburst = 1; in dwc3_gadget_init_control_endpoint()
3184 dep->endpoint.ops = &dwc3_gadget_ep0_ops; in dwc3_gadget_init_control_endpoint()
3185 if (!dep->direction) in dwc3_gadget_init_control_endpoint()
3186 dwc->gadget->ep0 = &dep->endpoint; in dwc3_gadget_init_control_endpoint()
3188 dep->endpoint.caps.type_control = true; in dwc3_gadget_init_control_endpoint()
3195 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_init_in_endpoint()
3205 size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(dep->number >> 1)); in dwc3_gadget_init_in_endpoint()
3216 * maxpacket = mdwidth * (fifo_size - 1); in dwc3_gadget_init_in_endpoint()
3220 * maxpacket = mdwidth * ((fifo_size - 1) - 1) - mdwidth; in dwc3_gadget_init_in_endpoint()
3223 maxpacket = mdwidth * (size - 1); in dwc3_gadget_init_in_endpoint()
3225 maxpacket = mdwidth * ((size - 1) - 1) - mdwidth; in dwc3_gadget_init_in_endpoint()
3229 usb_ep_set_maxpacket_limit(&dep->endpoint, size); in dwc3_gadget_init_in_endpoint()
3231 dep->endpoint.max_streams = 16; in dwc3_gadget_init_in_endpoint()
3232 dep->endpoint.ops = &dwc3_gadget_ep_ops; in dwc3_gadget_init_in_endpoint()
3233 list_add_tail(&dep->endpoint.ep_list, in dwc3_gadget_init_in_endpoint()
3234 &dwc->gadget->ep_list); in dwc3_gadget_init_in_endpoint()
3235 dep->endpoint.caps.type_iso = true; in dwc3_gadget_init_in_endpoint()
3236 dep->endpoint.caps.type_bulk = true; in dwc3_gadget_init_in_endpoint()
3237 dep->endpoint.caps.type_int = true; in dwc3_gadget_init_in_endpoint()
3244 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_init_out_endpoint()
3254 size = dwc3_readl(dwc->regs, DWC3_GRXFIFOSIZ(0)); in dwc3_gadget_init_out_endpoint()
3271 size -= (3 * 8) + 16; in dwc3_gadget_init_out_endpoint()
3277 usb_ep_set_maxpacket_limit(&dep->endpoint, size); in dwc3_gadget_init_out_endpoint()
3278 dep->endpoint.max_streams = 16; in dwc3_gadget_init_out_endpoint()
3279 dep->endpoint.ops = &dwc3_gadget_ep_ops; in dwc3_gadget_init_out_endpoint()
3280 list_add_tail(&dep->endpoint.ep_list, in dwc3_gadget_init_out_endpoint()
3281 &dwc->gadget->ep_list); in dwc3_gadget_init_out_endpoint()
3282 dep->endpoint.caps.type_iso = true; in dwc3_gadget_init_out_endpoint()
3283 dep->endpoint.caps.type_bulk = true; in dwc3_gadget_init_out_endpoint()
3284 dep->endpoint.caps.type_int = true; in dwc3_gadget_init_out_endpoint()
3298 return -ENOMEM; in dwc3_gadget_init_endpoint()
3300 dep->dwc = dwc; in dwc3_gadget_init_endpoint()
3301 dep->number = epnum; in dwc3_gadget_init_endpoint()
3302 dep->direction = direction; in dwc3_gadget_init_endpoint()
3303 dep->regs = dwc->regs + DWC3_DEP_BASE(epnum); in dwc3_gadget_init_endpoint()
3304 dwc->eps[epnum] = dep; in dwc3_gadget_init_endpoint()
3305 dep->combo_num = 0; in dwc3_gadget_init_endpoint()
3306 dep->start_cmd_status = 0; in dwc3_gadget_init_endpoint()
3308 snprintf(dep->name, sizeof(dep->name), "ep%u%s", num, in dwc3_gadget_init_endpoint()
3311 dep->endpoint.name = dep->name; in dwc3_gadget_init_endpoint()
3313 if (!(dep->number > 1)) { in dwc3_gadget_init_endpoint()
3314 dep->endpoint.desc = &dwc3_gadget_ep0_desc; in dwc3_gadget_init_endpoint()
3315 dep->endpoint.comp_desc = NULL; in dwc3_gadget_init_endpoint()
3328 dep->endpoint.caps.dir_in = direction; in dwc3_gadget_init_endpoint()
3329 dep->endpoint.caps.dir_out = !direction; in dwc3_gadget_init_endpoint()
3331 INIT_LIST_HEAD(&dep->pending_list); in dwc3_gadget_init_endpoint()
3332 INIT_LIST_HEAD(&dep->started_list); in dwc3_gadget_init_endpoint()
3333 INIT_LIST_HEAD(&dep->cancelled_list); in dwc3_gadget_init_endpoint()
3344 INIT_LIST_HEAD(&dwc->gadget->ep_list); in dwc3_gadget_init_endpoints()
3363 dep = dwc->eps[epnum]; in dwc3_gadget_free_endpoints()
3368 * bi-directional USB endpoint 0. in dwc3_gadget_free_endpoints()
3377 list_del(&dep->endpoint.ep_list); in dwc3_gadget_free_endpoints()
3385 /* -------------------------------------------------------------------------- */
3396 req->num_trbs--; in dwc3_gadget_ep_reclaim_completed_trb()
3408 if (chain && (trb->ctrl & DWC3_TRB_CTRL_HWO)) in dwc3_gadget_ep_reclaim_completed_trb()
3409 trb->ctrl &= ~DWC3_TRB_CTRL_HWO; in dwc3_gadget_ep_reclaim_completed_trb()
3413 * have the Isoc-First type. Track and report its interval frame number. in dwc3_gadget_ep_reclaim_completed_trb()
3415 if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && in dwc3_gadget_ep_reclaim_completed_trb()
3416 (trb->ctrl & DWC3_TRBCTL_ISOCHRONOUS_FIRST)) { in dwc3_gadget_ep_reclaim_completed_trb()
3419 frame_number = DWC3_TRB_CTRL_GET_SID_SOFN(trb->ctrl); in dwc3_gadget_ep_reclaim_completed_trb()
3420 frame_number &= ~(dep->interval - 1); in dwc3_gadget_ep_reclaim_completed_trb()
3421 req->request.frame_number = frame_number; in dwc3_gadget_ep_reclaim_completed_trb()
3427 * TRB. Don't add it to req->remaining calculation. in dwc3_gadget_ep_reclaim_completed_trb()
3429 if (trb->bpl == lower_32_bits(dep->dwc->bounce_addr) && in dwc3_gadget_ep_reclaim_completed_trb()
3430 trb->bph == upper_32_bits(dep->dwc->bounce_addr)) { in dwc3_gadget_ep_reclaim_completed_trb()
3431 trb->ctrl &= ~DWC3_TRB_CTRL_HWO; in dwc3_gadget_ep_reclaim_completed_trb()
3435 count = trb->size & DWC3_TRB_SIZE_MASK; in dwc3_gadget_ep_reclaim_completed_trb()
3436 req->remaining += count; in dwc3_gadget_ep_reclaim_completed_trb()
3438 if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN) in dwc3_gadget_ep_reclaim_completed_trb()
3441 if (event->status & DEPEVT_STATUS_SHORT && !chain) in dwc3_gadget_ep_reclaim_completed_trb()
3444 if ((trb->ctrl & DWC3_TRB_CTRL_ISP_IMI) && in dwc3_gadget_ep_reclaim_completed_trb()
3445 DWC3_TRB_SIZE_TRBSTS(trb->size) == DWC3_TRBSTS_MISSED_ISOC) in dwc3_gadget_ep_reclaim_completed_trb()
3448 if ((trb->ctrl & DWC3_TRB_CTRL_IOC) || in dwc3_gadget_ep_reclaim_completed_trb()
3449 (trb->ctrl & DWC3_TRB_CTRL_LST)) in dwc3_gadget_ep_reclaim_completed_trb()
3459 struct dwc3_trb *trb = &dep->trb_pool[dep->trb_dequeue]; in dwc3_gadget_ep_reclaim_trb_sg()
3460 struct scatterlist *sg = req->sg; in dwc3_gadget_ep_reclaim_trb_sg()
3462 unsigned int num_queued = req->num_queued_sgs; in dwc3_gadget_ep_reclaim_trb_sg()
3467 trb = &dep->trb_pool[dep->trb_dequeue]; in dwc3_gadget_ep_reclaim_trb_sg()
3469 req->sg = sg_next(s); in dwc3_gadget_ep_reclaim_trb_sg()
3470 req->num_queued_sgs--; in dwc3_gadget_ep_reclaim_trb_sg()
3485 struct dwc3_trb *trb = &dep->trb_pool[dep->trb_dequeue]; in dwc3_gadget_ep_reclaim_trb_linear()
3493 return req->num_pending_sgs == 0 && req->num_queued_sgs == 0; in dwc3_gadget_ep_request_completed()
3503 if (req->request.num_mapped_sgs) in dwc3_gadget_ep_cleanup_completed_request()
3510 req->request.actual = req->request.length - req->remaining; in dwc3_gadget_ep_cleanup_completed_request()
3515 if (req->needs_extra_trb) { in dwc3_gadget_ep_cleanup_completed_request()
3518 req->needs_extra_trb = false; in dwc3_gadget_ep_cleanup_completed_request()
3527 if (req->request.no_interrupt) { in dwc3_gadget_ep_cleanup_completed_request()
3530 trb = dwc3_ep_prev_trb(dep, dep->trb_dequeue); in dwc3_gadget_ep_cleanup_completed_request()
3531 switch (DWC3_TRB_SIZE_TRBSTS(trb->size)) { in dwc3_gadget_ep_cleanup_completed_request()
3534 request_status = -EXDEV; in dwc3_gadget_ep_cleanup_completed_request()
3560 while (!list_empty(&dep->started_list)) { in dwc3_gadget_ep_cleanup_completed_requests()
3563 req = next_request(&dep->started_list); in dwc3_gadget_ep_cleanup_completed_requests()
3572 if (!dep->endpoint.desc) in dwc3_gadget_ep_cleanup_completed_requests()
3580 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_ep_should_continue()
3582 if (!dep->endpoint.desc || !dwc->pullups_connected || in dwc3_gadget_ep_should_continue()
3583 !dwc->connected) in dwc3_gadget_ep_should_continue()
3586 if (!list_empty(&dep->pending_list)) in dwc3_gadget_ep_should_continue()
3593 req = next_request(&dep->started_list); in dwc3_gadget_ep_should_continue()
3603 dep->frame_number = event->parameters; in dwc3_gadget_endpoint_frame_from_event()
3609 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_endpoint_trbs_complete()
3614 if (dep->flags & DWC3_EP_END_TRANSFER_PENDING) in dwc3_gadget_endpoint_trbs_complete()
3617 if (!dep->endpoint.desc) in dwc3_gadget_endpoint_trbs_complete()
3620 if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && in dwc3_gadget_endpoint_trbs_complete()
3621 list_empty(&dep->started_list) && in dwc3_gadget_endpoint_trbs_complete()
3622 (list_empty(&dep->pending_list) || status == -EXDEV)) in dwc3_gadget_endpoint_trbs_complete()
3630 * WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround. in dwc3_gadget_endpoint_trbs_complete()
3638 dep = dwc->eps[i]; in dwc3_gadget_endpoint_trbs_complete()
3640 if (!(dep->flags & DWC3_EP_ENABLED)) in dwc3_gadget_endpoint_trbs_complete()
3643 if (!list_empty(&dep->started_list)) in dwc3_gadget_endpoint_trbs_complete()
3647 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_endpoint_trbs_complete()
3648 reg |= dwc->u1u2; in dwc3_gadget_endpoint_trbs_complete()
3649 dwc3_writel(dwc->regs, DWC3_DCTL, reg); in dwc3_gadget_endpoint_trbs_complete()
3651 dwc->u1u2 = 0; in dwc3_gadget_endpoint_trbs_complete()
3662 if (!dep->endpoint.desc) in dwc3_gadget_endpoint_transfer_in_progress()
3665 if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) in dwc3_gadget_endpoint_transfer_in_progress()
3668 if (event->status & DEPEVT_STATUS_BUSERR) in dwc3_gadget_endpoint_transfer_in_progress()
3669 status = -ECONNRESET; in dwc3_gadget_endpoint_transfer_in_progress()
3671 if (event->status & DEPEVT_STATUS_MISSED_ISOC) in dwc3_gadget_endpoint_transfer_in_progress()
3672 status = -EXDEV; in dwc3_gadget_endpoint_transfer_in_progress()
3682 dep->flags &= ~DWC3_EP_TRANSFER_STARTED; in dwc3_gadget_endpoint_transfer_complete()
3684 if (event->status & DEPEVT_STATUS_BUSERR) in dwc3_gadget_endpoint_transfer_complete()
3685 status = -ECONNRESET; in dwc3_gadget_endpoint_transfer_complete()
3688 dep->flags &= ~DWC3_EP_WAIT_TRANSFER_COMPLETE; in dwc3_gadget_endpoint_transfer_complete()
3704 if (dep->flags & DWC3_EP_END_TRANSFER_PENDING) in dwc3_gadget_endpoint_transfer_not_ready()
3713 u8 cmd = DEPEVT_PARAMETER_CMD(event->parameters); in dwc3_gadget_endpoint_command_complete()
3723 if (dep->stream_capable) in dwc3_gadget_endpoint_command_complete()
3724 dep->flags |= DWC3_EP_IGNORE_NEXT_NOSTREAM; in dwc3_gadget_endpoint_command_complete()
3726 dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING; in dwc3_gadget_endpoint_command_complete()
3727 dep->flags &= ~DWC3_EP_TRANSFER_STARTED; in dwc3_gadget_endpoint_command_complete()
3730 if (dep->flags & DWC3_EP_PENDING_CLEAR_STALL) { in dwc3_gadget_endpoint_command_complete()
3731 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_endpoint_command_complete()
3733 dep->flags &= ~DWC3_EP_PENDING_CLEAR_STALL; in dwc3_gadget_endpoint_command_complete()
3735 struct usb_ep *ep0 = &dwc->eps[0]->endpoint; in dwc3_gadget_endpoint_command_complete()
3737 dev_err(dwc->dev, "failed to clear STALL on %s\n", dep->name); in dwc3_gadget_endpoint_command_complete()
3738 if (dwc->delayed_status) in dwc3_gadget_endpoint_command_complete()
3743 dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE); in dwc3_gadget_endpoint_command_complete()
3744 if (dwc->clear_stall_protocol == dep->number) in dwc3_gadget_endpoint_command_complete()
3748 if ((dep->flags & DWC3_EP_DELAY_START) && in dwc3_gadget_endpoint_command_complete()
3749 !usb_endpoint_xfer_isoc(dep->endpoint.desc)) in dwc3_gadget_endpoint_command_complete()
3752 dep->flags &= ~DWC3_EP_DELAY_START; in dwc3_gadget_endpoint_command_complete()
3758 struct dwc3 *dwc = dep->dwc; in dwc3_gadget_endpoint_stream_event()
3760 if (event->status == DEPEVT_STREAMEVT_FOUND) { in dwc3_gadget_endpoint_stream_event()
3761 dep->flags |= DWC3_EP_FIRST_STREAM_PRIMED; in dwc3_gadget_endpoint_stream_event()
3766 switch (event->parameters) { in dwc3_gadget_endpoint_stream_event()
3775 if (dep->flags & DWC3_EP_FORCE_RESTART_STREAM) { in dwc3_gadget_endpoint_stream_event()
3776 if (dep->flags & DWC3_EP_FIRST_STREAM_PRIMED) in dwc3_gadget_endpoint_stream_event()
3777 dep->flags &= ~DWC3_EP_FORCE_RESTART_STREAM; in dwc3_gadget_endpoint_stream_event()
3779 dep->flags |= DWC3_EP_FIRST_STREAM_PRIMED; in dwc3_gadget_endpoint_stream_event()
3784 if ((dep->flags & DWC3_EP_IGNORE_NEXT_NOSTREAM) || in dwc3_gadget_endpoint_stream_event()
3785 !(dep->flags & DWC3_EP_FORCE_RESTART_STREAM) || in dwc3_gadget_endpoint_stream_event()
3786 (!DWC3_MST_CAPABLE(&dwc->hwparams) && in dwc3_gadget_endpoint_stream_event()
3787 !(dep->flags & DWC3_EP_WAIT_TRANSFER_COMPLETE))) in dwc3_gadget_endpoint_stream_event()
3807 dwc3_send_gadget_generic_command(dwc, cmd, dep->number); in dwc3_gadget_endpoint_stream_event()
3809 dep->flags |= DWC3_EP_DELAY_START; in dwc3_gadget_endpoint_stream_event()
3817 dep->flags &= ~DWC3_EP_IGNORE_NEXT_NOSTREAM; in dwc3_gadget_endpoint_stream_event()
3824 u8 epnum = event->endpoint_number; in dwc3_endpoint_interrupt()
3826 dep = dwc->eps[epnum]; in dwc3_endpoint_interrupt()
3828 if (!(dep->flags & DWC3_EP_ENABLED)) { in dwc3_endpoint_interrupt()
3829 if ((epnum > 1) && !(dep->flags & DWC3_EP_TRANSFER_STARTED)) in dwc3_endpoint_interrupt()
3833 if ((event->endpoint_event != DWC3_DEPEVT_EPCMDCMPLT) && in dwc3_endpoint_interrupt()
3834 !(epnum <= 1 && event->endpoint_event == DWC3_DEPEVT_XFERCOMPLETE)) in dwc3_endpoint_interrupt()
3843 switch (event->endpoint_event) { in dwc3_endpoint_interrupt()
3862 dev_err(dwc->dev, "unknown endpoint event %d\n", event->endpoint_event); in dwc3_endpoint_interrupt()
3869 if (dwc->async_callbacks && dwc->gadget_driver->disconnect) { in dwc3_disconnect_gadget()
3870 spin_unlock(&dwc->lock); in dwc3_disconnect_gadget()
3871 dwc->gadget_driver->disconnect(dwc->gadget); in dwc3_disconnect_gadget()
3872 spin_lock(&dwc->lock); in dwc3_disconnect_gadget()
3878 if (dwc->async_callbacks && dwc->gadget_driver->suspend) { in dwc3_suspend_gadget()
3879 spin_unlock(&dwc->lock); in dwc3_suspend_gadget()
3880 dwc->gadget_driver->suspend(dwc->gadget); in dwc3_suspend_gadget()
3881 spin_lock(&dwc->lock); in dwc3_suspend_gadget()
3887 if (dwc->async_callbacks && dwc->gadget_driver->resume) { in dwc3_resume_gadget()
3888 spin_unlock(&dwc->lock); in dwc3_resume_gadget()
3889 dwc->gadget_driver->resume(dwc->gadget); in dwc3_resume_gadget()
3890 spin_lock(&dwc->lock); in dwc3_resume_gadget()
3896 if (!dwc->gadget_driver) in dwc3_reset_gadget()
3899 if (dwc->async_callbacks && dwc->gadget->speed != USB_SPEED_UNKNOWN) { in dwc3_reset_gadget()
3900 spin_unlock(&dwc->lock); in dwc3_reset_gadget()
3901 usb_gadget_udc_reset(dwc->gadget, dwc->gadget_driver); in dwc3_reset_gadget()
3902 spin_lock(&dwc->lock); in dwc3_reset_gadget()
3909 struct dwc3 *dwc = dep->dwc; in dwc3_stop_active_transfer()
3917 if (dep->number <= 1 && dwc->ep0state != EP0_DATA_PHASE) in dwc3_stop_active_transfer()
3920 if (interrupt && (dep->flags & DWC3_EP_DELAY_STOP)) in dwc3_stop_active_transfer()
3923 if (!(dep->flags & DWC3_EP_TRANSFER_STARTED) || in dwc3_stop_active_transfer()
3924 (dep->flags & DWC3_EP_END_TRANSFER_PENDING)) in dwc3_stop_active_transfer()
3934 if (dwc->ep0state != EP0_SETUP_PHASE && !dwc->delayed_status) { in dwc3_stop_active_transfer()
3935 dep->flags |= DWC3_EP_DELAY_STOP; in dwc3_stop_active_transfer()
3981 dep = dwc->eps[epnum]; in dwc3_clear_stall_all_ep()
3985 if (!(dep->flags & DWC3_EP_STALL)) in dwc3_clear_stall_all_ep()
3988 dep->flags &= ~DWC3_EP_STALL; in dwc3_clear_stall_all_ep()
3999 dwc->suspended = false; in dwc3_gadget_disconnect_interrupt()
4003 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_disconnect_interrupt()
4008 dwc->connected = false; in dwc3_gadget_disconnect_interrupt()
4012 dwc->gadget->speed = USB_SPEED_UNKNOWN; in dwc3_gadget_disconnect_interrupt()
4013 dwc->setup_packet_pending = false; in dwc3_gadget_disconnect_interrupt()
4014 dwc->gadget->wakeup_armed = false; in dwc3_gadget_disconnect_interrupt()
4016 usb_gadget_set_state(dwc->gadget, USB_STATE_NOTATTACHED); in dwc3_gadget_disconnect_interrupt()
4023 * interrupt to set dwc->connected to FALSE. in dwc3_gadget_disconnect_interrupt()
4025 pm_request_idle(dwc->dev); in dwc3_gadget_disconnect_interrupt()
4032 dwc->suspended = false; in dwc3_gadget_reset_interrupt()
4036 * drivers to stop any active transfers through ep disable. in dwc3_gadget_reset_interrupt()
4037 * However, for functions which defer ep disable, such as mass in dwc3_gadget_reset_interrupt()
4041 dwc->connected = false; in dwc3_gadget_reset_interrupt()
4070 if (dwc->setup_packet_pending) in dwc3_gadget_reset_interrupt()
4085 * Section 4.1.2 Table 4-2, it states that during a USB reset, the SW in dwc3_gadget_reset_interrupt()
4090 dwc->connected = true; in dwc3_gadget_reset_interrupt()
4092 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_reset_interrupt()
4095 dwc->test_mode = false; in dwc3_gadget_reset_interrupt()
4096 dwc->gadget->wakeup_armed = false; in dwc3_gadget_reset_interrupt()
4101 reg = dwc3_readl(dwc->regs, DWC3_DCFG); in dwc3_gadget_reset_interrupt()
4103 dwc3_writel(dwc->regs, DWC3_DCFG, reg); in dwc3_gadget_reset_interrupt()
4114 if (!dwc->softconnect) in dwc3_gadget_conndone_interrupt()
4117 reg = dwc3_readl(dwc->regs, DWC3_DSTS); in dwc3_gadget_conndone_interrupt()
4119 dwc->speed = speed; in dwc3_gadget_conndone_interrupt()
4124 dwc->gadget->ssp_rate = USB_SSP_GEN_UNKNOWN; in dwc3_gadget_conndone_interrupt()
4138 dwc->gadget->ep0->maxpacket = 512; in dwc3_gadget_conndone_interrupt()
4139 dwc->gadget->speed = USB_SPEED_SUPER_PLUS; in dwc3_gadget_conndone_interrupt()
4142 dwc->gadget->ssp_rate = USB_SSP_GEN_2x2; in dwc3_gadget_conndone_interrupt()
4144 dwc->gadget->ssp_rate = USB_SSP_GEN_2x1; in dwc3_gadget_conndone_interrupt()
4164 dwc->gadget->ep0->maxpacket = 512; in dwc3_gadget_conndone_interrupt()
4165 dwc->gadget->speed = USB_SPEED_SUPER; in dwc3_gadget_conndone_interrupt()
4168 dwc->gadget->speed = USB_SPEED_SUPER_PLUS; in dwc3_gadget_conndone_interrupt()
4169 dwc->gadget->ssp_rate = USB_SSP_GEN_1x2; in dwc3_gadget_conndone_interrupt()
4174 dwc->gadget->ep0->maxpacket = 64; in dwc3_gadget_conndone_interrupt()
4175 dwc->gadget->speed = USB_SPEED_HIGH; in dwc3_gadget_conndone_interrupt()
4179 dwc->gadget->ep0->maxpacket = 64; in dwc3_gadget_conndone_interrupt()
4180 dwc->gadget->speed = USB_SPEED_FULL; in dwc3_gadget_conndone_interrupt()
4184 dwc->eps[1]->endpoint.maxpacket = dwc->gadget->ep0->maxpacket; in dwc3_gadget_conndone_interrupt()
4189 !dwc->usb2_gadget_lpm_disable && in dwc3_gadget_conndone_interrupt()
4192 reg = dwc3_readl(dwc->regs, DWC3_DCFG); in dwc3_gadget_conndone_interrupt()
4194 dwc3_writel(dwc->regs, DWC3_DCFG, reg); in dwc3_gadget_conndone_interrupt()
4196 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_conndone_interrupt()
4199 reg |= DWC3_DCTL_HIRD_THRES(dwc->hird_threshold | in dwc3_gadget_conndone_interrupt()
4200 (dwc->is_utmi_l1_suspend << 4)); in dwc3_gadget_conndone_interrupt()
4208 WARN_ONCE(DWC3_VER_IS_PRIOR(DWC3, 240A) && dwc->has_lpm_erratum, in dwc3_gadget_conndone_interrupt()
4211 if (dwc->has_lpm_erratum && !DWC3_VER_IS_PRIOR(DWC3, 240A)) { in dwc3_gadget_conndone_interrupt()
4213 reg |= DWC3_DCTL_NYET_THRES(dwc->lpm_nyet_threshold); in dwc3_gadget_conndone_interrupt()
4218 if (dwc->usb2_gadget_lpm_disable) { in dwc3_gadget_conndone_interrupt()
4219 reg = dwc3_readl(dwc->regs, DWC3_DCFG); in dwc3_gadget_conndone_interrupt()
4221 dwc3_writel(dwc->regs, DWC3_DCFG, reg); in dwc3_gadget_conndone_interrupt()
4224 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_conndone_interrupt()
4229 dep = dwc->eps[0]; in dwc3_gadget_conndone_interrupt()
4232 dev_err(dwc->dev, "failed to enable %s\n", dep->name); in dwc3_gadget_conndone_interrupt()
4236 dep = dwc->eps[1]; in dwc3_gadget_conndone_interrupt()
4239 dev_err(dwc->dev, "failed to enable %s\n", dep->name); in dwc3_gadget_conndone_interrupt()
4254 dwc->suspended = false; in dwc3_gadget_wakeup_interrupt()
4261 if (dwc->async_callbacks && dwc->gadget_driver->resume) { in dwc3_gadget_wakeup_interrupt()
4262 spin_unlock(&dwc->lock); in dwc3_gadget_wakeup_interrupt()
4263 dwc->gadget_driver->resume(dwc->gadget); in dwc3_gadget_wakeup_interrupt()
4264 spin_lock(&dwc->lock); in dwc3_gadget_wakeup_interrupt()
4267 dwc->link_state = evtinfo & DWC3_LINK_STATE_MASK; in dwc3_gadget_wakeup_interrupt()
4279 * host-initiated U3 exit. in dwc3_gadget_linksts_change_interrupt()
4290 * STAR#9000570034 RTL: SS Resume event generated in non-Hibernation in dwc3_gadget_linksts_change_interrupt()
4293 pwropt = DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1); in dwc3_gadget_linksts_change_interrupt()
4296 if ((dwc->link_state == DWC3_LINK_STATE_U3) && in dwc3_gadget_linksts_change_interrupt()
4308 * suggested workaround is to disable DCTL[12:9] bits if we're in dwc3_gadget_linksts_change_interrupt()
4317 * STAR#9000446952: RTL: Device SS : if U1/U2 ->U0 takes >128us in dwc3_gadget_linksts_change_interrupt()
4325 switch (dwc->link_state) { in dwc3_gadget_linksts_change_interrupt()
4328 reg = dwc3_readl(dwc->regs, DWC3_DCTL); in dwc3_gadget_linksts_change_interrupt()
4334 if (!dwc->u1u2) in dwc3_gadget_linksts_change_interrupt()
4335 dwc->u1u2 = reg & u1u2; in dwc3_gadget_linksts_change_interrupt()
4350 if (dwc->gadget->wakeup_armed) { in dwc3_gadget_linksts_change_interrupt()
4353 dwc->suspended = false; in dwc3_gadget_linksts_change_interrupt()
4357 if (dwc->speed == USB_SPEED_SUPER) in dwc3_gadget_linksts_change_interrupt()
4372 dwc->link_state = next; in dwc3_gadget_linksts_change_interrupt()
4380 if (!dwc->suspended && next == DWC3_LINK_STATE_U3) { in dwc3_gadget_suspend_interrupt()
4381 dwc->suspended = true; in dwc3_gadget_suspend_interrupt()
4385 dwc->link_state = next; in dwc3_gadget_suspend_interrupt()
4391 switch (event->type) { in dwc3_gadget_interrupt()
4402 dwc3_gadget_wakeup_interrupt(dwc, event->event_info); in dwc3_gadget_interrupt()
4405 dev_WARN_ONCE(dwc->dev, true, "unexpected hibernation event\n"); in dwc3_gadget_interrupt()
4408 dwc3_gadget_linksts_change_interrupt(dwc, event->event_info); in dwc3_gadget_interrupt()
4413 dwc3_gadget_suspend_interrupt(dwc, event->event_info); in dwc3_gadget_interrupt()
4421 dev_WARN(dwc->dev, "UNKNOWN IRQ %d\n", event->type); in dwc3_gadget_interrupt()
4428 trace_dwc3_event(event->raw, dwc); in dwc3_process_event_entry()
4430 if (!event->type.is_devspec) in dwc3_process_event_entry()
4431 dwc3_endpoint_interrupt(dwc, &event->depevt); in dwc3_process_event_entry()
4432 else if (event->type.type == DWC3_EVENT_TYPE_DEV) in dwc3_process_event_entry()
4433 dwc3_gadget_interrupt(dwc, &event->devt); in dwc3_process_event_entry()
4435 dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw); in dwc3_process_event_entry()
4440 struct dwc3 *dwc = evt->dwc; in dwc3_process_event_buf()
4444 left = evt->count; in dwc3_process_event_buf()
4446 if (!(evt->flags & DWC3_EVENT_PENDING)) in dwc3_process_event_buf()
4452 event.raw = *(u32 *) (evt->cache + evt->lpos); in dwc3_process_event_buf()
4465 evt->lpos = (evt->lpos + 4) % evt->length; in dwc3_process_event_buf()
4466 left -= 4; in dwc3_process_event_buf()
4469 evt->count = 0; in dwc3_process_event_buf()
4473 dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), in dwc3_process_event_buf()
4474 DWC3_GEVNTSIZ_SIZE(evt->length)); in dwc3_process_event_buf()
4476 if (dwc->imod_interval) { in dwc3_process_event_buf()
4477 dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), DWC3_GEVNTCOUNT_EHB); in dwc3_process_event_buf()
4478 dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), dwc->imod_interval); in dwc3_process_event_buf()
4482 evt->flags &= ~DWC3_EVENT_PENDING; in dwc3_process_event_buf()
4490 struct dwc3 *dwc = evt->dwc; in dwc3_thread_interrupt()
4495 spin_lock_irqsave(&dwc->lock, flags); in dwc3_thread_interrupt()
4497 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_thread_interrupt()
4505 struct dwc3 *dwc = evt->dwc; in dwc3_check_event_buf()
4509 if (pm_runtime_suspended(dwc->dev)) { in dwc3_check_event_buf()
4510 dwc->pending_events = true; in dwc3_check_event_buf()
4516 pm_runtime_get(dwc->dev); in dwc3_check_event_buf()
4517 disable_irq_nosync(dwc->irq_gadget); in dwc3_check_event_buf()
4522 * With PCIe legacy interrupt, test shows that top-half irq handler can in dwc3_check_event_buf()
4523 * be called again after HW interrupt deassertion. Check if bottom-half in dwc3_check_event_buf()
4527 if (evt->flags & DWC3_EVENT_PENDING) in dwc3_check_event_buf()
4530 count = dwc3_readl(dwc->regs, DWC3_GEVNTCOUNT(0)); in dwc3_check_event_buf()
4535 evt->count = count; in dwc3_check_event_buf()
4536 evt->flags |= DWC3_EVENT_PENDING; in dwc3_check_event_buf()
4539 dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), in dwc3_check_event_buf()
4540 DWC3_GEVNTSIZ_INTMASK | DWC3_GEVNTSIZ_SIZE(evt->length)); in dwc3_check_event_buf()
4542 amount = min(count, evt->length - evt->lpos); in dwc3_check_event_buf()
4543 memcpy(evt->cache + evt->lpos, evt->buf + evt->lpos, amount); in dwc3_check_event_buf()
4546 memcpy(evt->cache, evt->buf, count - amount); in dwc3_check_event_buf()
4548 dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), count); in dwc3_check_event_buf()
4562 struct platform_device *dwc3_pdev = to_platform_device(dwc->dev); in dwc3_gadget_get_irq()
4569 if (irq == -EPROBE_DEFER) in dwc3_gadget_get_irq()
4576 if (irq == -EPROBE_DEFER) in dwc3_gadget_get_irq()
4593 * dwc3_gadget_init - initializes gadget related registers
4610 dwc->irq_gadget = irq; in dwc3_gadget_init()
4612 dwc->ep0_trb = dma_alloc_coherent(dwc->sysdev, in dwc3_gadget_init()
4613 sizeof(*dwc->ep0_trb) * 2, in dwc3_gadget_init()
4614 &dwc->ep0_trb_addr, GFP_KERNEL); in dwc3_gadget_init()
4615 if (!dwc->ep0_trb) { in dwc3_gadget_init()
4616 dev_err(dwc->dev, "failed to allocate ep0 trb\n"); in dwc3_gadget_init()
4617 ret = -ENOMEM; in dwc3_gadget_init()
4621 dwc->setup_buf = kzalloc(DWC3_EP0_SETUP_SIZE, GFP_KERNEL); in dwc3_gadget_init()
4622 if (!dwc->setup_buf) { in dwc3_gadget_init()
4623 ret = -ENOMEM; in dwc3_gadget_init()
4627 dwc->bounce = dma_alloc_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, in dwc3_gadget_init()
4628 &dwc->bounce_addr, GFP_KERNEL); in dwc3_gadget_init()
4629 if (!dwc->bounce) { in dwc3_gadget_init()
4630 ret = -ENOMEM; in dwc3_gadget_init()
4634 init_completion(&dwc->ep0_in_setup); in dwc3_gadget_init()
4635 dwc->gadget = kzalloc(sizeof(struct usb_gadget), GFP_KERNEL); in dwc3_gadget_init()
4636 if (!dwc->gadget) { in dwc3_gadget_init()
4637 ret = -ENOMEM; in dwc3_gadget_init()
4642 usb_initialize_gadget(dwc->dev, dwc->gadget, dwc_gadget_release); in dwc3_gadget_init()
4643 dev = &dwc->gadget->dev; in dwc3_gadget_init()
4644 dev->platform_data = dwc; in dwc3_gadget_init()
4645 dwc->gadget->ops = &dwc3_gadget_ops; in dwc3_gadget_init()
4646 dwc->gadget->speed = USB_SPEED_UNKNOWN; in dwc3_gadget_init()
4647 dwc->gadget->ssp_rate = USB_SSP_GEN_UNKNOWN; in dwc3_gadget_init()
4648 dwc->gadget->sg_supported = true; in dwc3_gadget_init()
4649 dwc->gadget->name = "dwc3-gadget"; in dwc3_gadget_init()
4650 dwc->gadget->lpm_capable = !dwc->usb2_gadget_lpm_disable; in dwc3_gadget_init()
4651 dwc->gadget->wakeup_capable = true; in dwc3_gadget_init()
4670 !dwc->dis_metastability_quirk) in dwc3_gadget_init()
4671 dev_info(dwc->dev, "changing max_speed on rev %08x\n", in dwc3_gadget_init()
4672 dwc->revision); in dwc3_gadget_init()
4674 dwc->gadget->max_speed = dwc->maximum_speed; in dwc3_gadget_init()
4675 dwc->gadget->max_ssp_rate = dwc->max_ssp_rate; in dwc3_gadget_init()
4682 ret = dwc3_gadget_init_endpoints(dwc, dwc->num_eps); in dwc3_gadget_init()
4686 ret = usb_add_gadget(dwc->gadget); in dwc3_gadget_init()
4688 dev_err(dwc->dev, "failed to add gadget\n"); in dwc3_gadget_init()
4692 if (DWC3_IP_IS(DWC32) && dwc->maximum_speed == USB_SPEED_SUPER_PLUS) in dwc3_gadget_init()
4693 dwc3_gadget_set_ssp_rate(dwc->gadget, dwc->max_ssp_rate); in dwc3_gadget_init()
4695 dwc3_gadget_set_speed(dwc->gadget, dwc->maximum_speed); in dwc3_gadget_init()
4698 if (dwc->sys_wakeup) in dwc3_gadget_init()
4699 device_wakeup_disable(dwc->sysdev); in dwc3_gadget_init()
4706 usb_put_gadget(dwc->gadget); in dwc3_gadget_init()
4707 dwc->gadget = NULL; in dwc3_gadget_init()
4709 dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce, in dwc3_gadget_init()
4710 dwc->bounce_addr); in dwc3_gadget_init()
4713 kfree(dwc->setup_buf); in dwc3_gadget_init()
4716 dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2, in dwc3_gadget_init()
4717 dwc->ep0_trb, dwc->ep0_trb_addr); in dwc3_gadget_init()
4723 /* -------------------------------------------------------------------------- */
4727 if (!dwc->gadget) in dwc3_gadget_exit()
4731 usb_del_gadget(dwc->gadget); in dwc3_gadget_exit()
4733 usb_put_gadget(dwc->gadget); in dwc3_gadget_exit()
4734 dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce, in dwc3_gadget_exit()
4735 dwc->bounce_addr); in dwc3_gadget_exit()
4736 kfree(dwc->setup_buf); in dwc3_gadget_exit()
4737 dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2, in dwc3_gadget_exit()
4738 dwc->ep0_trb, dwc->ep0_trb_addr); in dwc3_gadget_exit()
4750 spin_lock_irqsave(&dwc->lock, flags); in dwc3_gadget_suspend()
4751 if (dwc->gadget_driver) in dwc3_gadget_suspend()
4753 spin_unlock_irqrestore(&dwc->lock, flags); in dwc3_gadget_suspend()
4763 if (dwc->softconnect) in dwc3_gadget_suspend()
4771 if (!dwc->gadget_driver || !dwc->softconnect) in dwc3_gadget_resume()