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, &params);  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_clear_tx_fifos - Clears txfifo allocation
704 	if (!dwc->do_fifo_resize)  in dwc3_gadget_clear_tx_fifos()
708 	dep = dwc->eps[1];  in dwc3_gadget_clear_tx_fifos()
709 	size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0));  in dwc3_gadget_clear_tx_fifos()
715 	dwc->last_fifo_depth = fifo_depth;  in dwc3_gadget_clear_tx_fifos()
717 	for (num = 3; num < min_t(int, dwc->num_eps, DWC3_ENDPOINTS_NUM);  in dwc3_gadget_clear_tx_fifos()
719 		dep = dwc->eps[num];  in dwc3_gadget_clear_tx_fifos()
722 			dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1)) &  in dwc3_gadget_clear_tx_fifos()
725 		dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1), size);  in dwc3_gadget_clear_tx_fifos()
726 		dep->flags &= ~DWC3_EP_TXFIFO_RESIZED;  in dwc3_gadget_clear_tx_fifos()
728 	dwc->num_ep_resized = 0;  in dwc3_gadget_clear_tx_fifos()
732  * dwc3_gadget_resize_tx_fifos - reallocate fifo spaces for current use-case
740  * on the configured size for RAM1 - which contains TxFifo -,
754 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_resize_tx_fifos()
765 	if (!dwc->do_fifo_resize)  in dwc3_gadget_resize_tx_fifos()
769 	if (!usb_endpoint_dir_in(dep->endpoint.desc) || dep->number <= 1)  in dwc3_gadget_resize_tx_fifos()
773 	if (dep->flags & DWC3_EP_TXFIFO_RESIZED)  in dwc3_gadget_resize_tx_fifos()
776 	ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7);  in dwc3_gadget_resize_tx_fifos()
778 	if ((dep->endpoint.maxburst > 1 &&  in dwc3_gadget_resize_tx_fifos()
779 	     usb_endpoint_xfer_bulk(dep->endpoint.desc)) ||  in dwc3_gadget_resize_tx_fifos()
780 	    usb_endpoint_xfer_isoc(dep->endpoint.desc))  in dwc3_gadget_resize_tx_fifos()
783 	if (dep->endpoint.maxburst > 6 &&  in dwc3_gadget_resize_tx_fifos()
784 	    (usb_endpoint_xfer_bulk(dep->endpoint.desc) ||  in dwc3_gadget_resize_tx_fifos()
785 	     usb_endpoint_xfer_isoc(dep->endpoint.desc)) && DWC3_IP_IS(DWC31))  in dwc3_gadget_resize_tx_fifos()
786 		num_fifos = dwc->tx_fifo_resize_max_num;  in dwc3_gadget_resize_tx_fifos()
792 	num_in_ep = dwc->max_cfg_eps;  in dwc3_gadget_resize_tx_fifos()
793 	num_in_ep -= dwc->num_ep_resized;  in dwc3_gadget_resize_tx_fifos()
797 	remaining = ram1_depth - min_depth - dwc->last_fifo_depth;  in dwc3_gadget_resize_tx_fifos()
804 	fifo_size = (num_fifos - 1) * fifo;  in dwc3_gadget_resize_tx_fifos()
812 	/* Check if TXFIFOs start at non-zero addr */  in dwc3_gadget_resize_tx_fifos()
813 	tmp = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0));  in dwc3_gadget_resize_tx_fifos()
816 	fifo_size |= (fifo_0_start + (dwc->last_fifo_depth << 16));  in dwc3_gadget_resize_tx_fifos()
818 		dwc->last_fifo_depth += DWC3_GTXFIFOSIZ_TXFDEP(fifo_size);  in dwc3_gadget_resize_tx_fifos()
820 		dwc->last_fifo_depth += DWC31_GTXFIFOSIZ_TXFDEP(fifo_size);  in dwc3_gadget_resize_tx_fifos()
823 	if (dwc->last_fifo_depth >= ram1_depth) {  in dwc3_gadget_resize_tx_fifos()
824 		dev_err(dwc->dev, "Fifosize(%d) > RAM size(%d) %s depth:%d\n",  in dwc3_gadget_resize_tx_fifos()
825 			dwc->last_fifo_depth, ram1_depth,  in dwc3_gadget_resize_tx_fifos()
826 			dep->endpoint.name, fifo_size);  in dwc3_gadget_resize_tx_fifos()
832 		dwc->last_fifo_depth -= fifo_size;  in dwc3_gadget_resize_tx_fifos()
833 		return -ENOMEM;  in dwc3_gadget_resize_tx_fifos()
836 	dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(dep->number >> 1), fifo_size);  in dwc3_gadget_resize_tx_fifos()
837 	dep->flags |= DWC3_EP_TXFIFO_RESIZED;  in dwc3_gadget_resize_tx_fifos()
838 	dwc->num_ep_resized++;  in dwc3_gadget_resize_tx_fifos()
844  * __dwc3_gadget_ep_enable - initializes a hw endpoint
853 	const struct usb_endpoint_descriptor *desc = dep->endpoint.desc;  in __dwc3_gadget_ep_enable()
854 	struct dwc3		*dwc = dep->dwc;  in __dwc3_gadget_ep_enable()
859 	if (!(dep->flags & DWC3_EP_ENABLED)) {  in __dwc3_gadget_ep_enable()
869 	if (!(dep->flags & DWC3_EP_RESOURCE_ALLOCATED)) {  in __dwc3_gadget_ep_enable()
875 	if (!(dep->flags & DWC3_EP_ENABLED)) {  in __dwc3_gadget_ep_enable()
879 		dep->type = usb_endpoint_type(desc);  in __dwc3_gadget_ep_enable()
880 		dep->flags |= DWC3_EP_ENABLED;  in __dwc3_gadget_ep_enable()
882 		reg = dwc3_readl(dwc->regs, DWC3_DALEPENA);  in __dwc3_gadget_ep_enable()
883 		reg |= DWC3_DALEPENA_EP(dep->number);  in __dwc3_gadget_ep_enable()
884 		dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);  in __dwc3_gadget_ep_enable()
886 		dep->trb_dequeue = 0;  in __dwc3_gadget_ep_enable()
887 		dep->trb_enqueue = 0;  in __dwc3_gadget_ep_enable()
893 		memset(dep->trb_pool, 0,  in __dwc3_gadget_ep_enable()
897 		trb_st_hw = &dep->trb_pool[0];  in __dwc3_gadget_ep_enable()
899 		trb_link = &dep->trb_pool[DWC3_TRB_NUM - 1];  in __dwc3_gadget_ep_enable()
900 		trb_link->bpl = lower_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw));  in __dwc3_gadget_ep_enable()
901 		trb_link->bph = upper_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw));  in __dwc3_gadget_ep_enable()
902 		trb_link->ctrl |= DWC3_TRBCTL_LINK_TRB;  in __dwc3_gadget_ep_enable()
903 		trb_link->ctrl |= DWC3_TRB_CTRL_HWO;  in __dwc3_gadget_ep_enable()
907 	 * Issue StartTransfer here with no-op TRB so we can always rely on No  in __dwc3_gadget_ep_enable()
918 		trb = &dep->trb_pool[0];  in __dwc3_gadget_ep_enable()
930 		if (dep->stream_capable) {  in __dwc3_gadget_ep_enable()
937 			 * no-op TRB as normal, but end it immediately. As a  in __dwc3_gadget_ep_enable()
955 			if (!dep->direction ||  in __dwc3_gadget_ep_enable()
956 			    !(dwc->hwparams.hwparams9 &  in __dwc3_gadget_ep_enable()
958 				dep->flags |= DWC3_EP_FORCE_RESTART_STREAM;  in __dwc3_gadget_ep_enable()
975 	if (dep->flags & DWC3_EP_DELAY_STOP)  in dwc3_remove_requests()
978 	/* - giveback all requests to gadget driver */  in dwc3_remove_requests()
979 	while (!list_empty(&dep->started_list)) {  in dwc3_remove_requests()
980 		req = next_request(&dep->started_list);  in dwc3_remove_requests()
985 	while (!list_empty(&dep->pending_list)) {  in dwc3_remove_requests()
986 		req = next_request(&dep->pending_list);  in dwc3_remove_requests()
991 	while (!list_empty(&dep->cancelled_list)) {  in dwc3_remove_requests()
992 		req = next_request(&dep->cancelled_list);  in dwc3_remove_requests()
999  * __dwc3_gadget_ep_disable - disables a hw endpoint
1010 	struct dwc3		*dwc = dep->dwc;  in __dwc3_gadget_ep_disable()
1017 	if (dep->flags & DWC3_EP_STALL)  in __dwc3_gadget_ep_disable()
1020 	reg = dwc3_readl(dwc->regs, DWC3_DALEPENA);  in __dwc3_gadget_ep_disable()
1021 	reg &= ~DWC3_DALEPENA_EP(dep->number);  in __dwc3_gadget_ep_disable()
1022 	dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);  in __dwc3_gadget_ep_disable()
1024 	dwc3_remove_requests(dwc, dep, -ESHUTDOWN);  in __dwc3_gadget_ep_disable()
1026 	dep->stream_capable = false;  in __dwc3_gadget_ep_disable()
1027 	dep->type = 0;  in __dwc3_gadget_ep_disable()
1034 	if (dep->flags & DWC3_EP_DELAY_STOP)  in __dwc3_gadget_ep_disable()
1036 	dep->flags &= mask;  in __dwc3_gadget_ep_disable()
1038 	/* Clear out the ep descriptors for non-ep0 */  in __dwc3_gadget_ep_disable()
1039 	if (dep->number > 1) {  in __dwc3_gadget_ep_disable()
1040 		dep->endpoint.comp_desc = NULL;  in __dwc3_gadget_ep_disable()
1041 		dep->endpoint.desc = NULL;  in __dwc3_gadget_ep_disable()
1047 /* -------------------------------------------------------------------------- */
1052 	return -EINVAL;  in dwc3_gadget_ep0_enable()
1057 	return -EINVAL;  in dwc3_gadget_ep0_disable()
1060 /* -------------------------------------------------------------------------- */
1070 	if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) {  in dwc3_gadget_ep_enable()
1072 		return -EINVAL;  in dwc3_gadget_ep_enable()
1075 	if (!desc->wMaxPacketSize) {  in dwc3_gadget_ep_enable()
1077 		return -EINVAL;  in dwc3_gadget_ep_enable()
1081 	dwc = dep->dwc;  in dwc3_gadget_ep_enable()
1083 	if (dev_WARN_ONCE(dwc->dev, dep->flags & DWC3_EP_ENABLED,  in dwc3_gadget_ep_enable()
1085 					dep->name))  in dwc3_gadget_ep_enable()
1088 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_enable()
1090 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_enable()
1104 		return -EINVAL;  in dwc3_gadget_ep_disable()
1108 	dwc = dep->dwc;  in dwc3_gadget_ep_disable()
1110 	if (dev_WARN_ONCE(dwc->dev, !(dep->flags & DWC3_EP_ENABLED),  in dwc3_gadget_ep_disable()
1112 					dep->name))  in dwc3_gadget_ep_disable()
1115 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_disable()
1117 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_disable()
1132 	req->direction	= dep->direction;  in dwc3_gadget_ep_alloc_request()
1133 	req->epnum	= dep->number;  in dwc3_gadget_ep_alloc_request()
1134 	req->dep	= dep;  in dwc3_gadget_ep_alloc_request()
1135 	req->status	= DWC3_REQUEST_STATUS_UNKNOWN;  in dwc3_gadget_ep_alloc_request()
1139 	return &req->request;  in dwc3_gadget_ep_alloc_request()
1152  * dwc3_ep_prev_trb - returns the previous TRB in the ring
1165 		tmp = DWC3_TRB_NUM - 1;  in dwc3_ep_prev_trb()
1167 	return &dep->trb_pool[tmp - 1];  in dwc3_ep_prev_trb()
1176 	 * or empty. It's considered full when there are DWC3_TRB_NUM-1 of TRBs  in dwc3_calc_trbs_left()
1179 	if (dep->trb_enqueue == dep->trb_dequeue) {  in dwc3_calc_trbs_left()
1184 		if (!list_empty(&dep->started_list))  in dwc3_calc_trbs_left()
1187 		return DWC3_TRB_NUM - 1;  in dwc3_calc_trbs_left()
1190 	trbs_left = dep->trb_dequeue - dep->trb_enqueue;  in dwc3_calc_trbs_left()
1191 	trbs_left &= (DWC3_TRB_NUM - 1);  in dwc3_calc_trbs_left()
1193 	if (dep->trb_dequeue < dep->trb_enqueue)  in dwc3_calc_trbs_left()
1194 		trbs_left--;  in dwc3_calc_trbs_left()
1200  * dwc3_prepare_one_trb - setup one TRB from one request
1216 	unsigned int		stream_id = req->request.stream_id;  in dwc3_prepare_one_trb()
1217 	unsigned int		short_not_ok = req->request.short_not_ok;  in dwc3_prepare_one_trb()
1218 	unsigned int		no_interrupt = req->request.no_interrupt;  in dwc3_prepare_one_trb()
1219 	unsigned int		is_last = req->request.is_last;  in dwc3_prepare_one_trb()
1220 	struct dwc3		*dwc = dep->dwc;  in dwc3_prepare_one_trb()
1221 	struct usb_gadget	*gadget = dwc->gadget;  in dwc3_prepare_one_trb()
1222 	enum usb_device_speed	speed = gadget->speed;  in dwc3_prepare_one_trb()
1225 		dma = dep->dwc->bounce_addr;  in dwc3_prepare_one_trb()
1226 	else if (req->request.num_sgs > 0)  in dwc3_prepare_one_trb()
1227 		dma = sg_dma_address(req->start_sg);  in dwc3_prepare_one_trb()
1229 		dma = req->request.dma;  in dwc3_prepare_one_trb()
1231 	trb = &dep->trb_pool[dep->trb_enqueue];  in dwc3_prepare_one_trb()
1233 	if (!req->trb) {  in dwc3_prepare_one_trb()
1235 		req->trb = trb;  in dwc3_prepare_one_trb()
1236 		req->trb_dma = dwc3_trb_dma_offset(dep, trb);  in dwc3_prepare_one_trb()
1239 	req->num_trbs++;  in dwc3_prepare_one_trb()
1241 	trb->size = DWC3_TRB_SIZE_LENGTH(trb_length);  in dwc3_prepare_one_trb()
1242 	trb->bpl = lower_32_bits(dma);  in dwc3_prepare_one_trb()
1243 	trb->bph = upper_32_bits(dma);  in dwc3_prepare_one_trb()
1245 	switch (usb_endpoint_type(dep->endpoint.desc)) {  in dwc3_prepare_one_trb()
1247 		trb->ctrl = DWC3_TRBCTL_CONTROL_SETUP;  in dwc3_prepare_one_trb()
1252 			trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;  in dwc3_prepare_one_trb()
1268 			 *	- DATA0  in dwc3_prepare_one_trb()
1271 			 *	- DATA1, DATA0  in dwc3_prepare_one_trb()
1274 			 *	- DATA2, DATA1, DATA0  in dwc3_prepare_one_trb()
1277 				struct usb_ep *ep = &dep->endpoint;  in dwc3_prepare_one_trb()
1279 				unsigned int maxp = usb_endpoint_maxp(ep->desc);  in dwc3_prepare_one_trb()
1281 				if (req->request.length <= (2 * maxp))  in dwc3_prepare_one_trb()
1282 					mult--;  in dwc3_prepare_one_trb()
1284 				if (req->request.length <= maxp)  in dwc3_prepare_one_trb()
1285 					mult--;  in dwc3_prepare_one_trb()
1287 				trb->size |= DWC3_TRB_SIZE_PCM1(mult);  in dwc3_prepare_one_trb()
1290 			trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS;  in dwc3_prepare_one_trb()
1294 			trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;  in dwc3_prepare_one_trb()
1299 		trb->ctrl = DWC3_TRBCTL_NORMAL;  in dwc3_prepare_one_trb()
1306 		dev_WARN(dwc->dev, "Unknown endpoint type %d\n",  in dwc3_prepare_one_trb()
1307 				usb_endpoint_type(dep->endpoint.desc));  in dwc3_prepare_one_trb()
1314 	if (usb_endpoint_dir_out(dep->endpoint.desc)) {  in dwc3_prepare_one_trb()
1315 		if (!dep->stream_capable)  in dwc3_prepare_one_trb()
1316 			trb->ctrl |= DWC3_TRB_CTRL_CSP;  in dwc3_prepare_one_trb()
1319 			trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;  in dwc3_prepare_one_trb()
1323 	if (dep->stream_capable && DWC3_MST_CAPABLE(&dwc->hwparams))  in dwc3_prepare_one_trb()
1324 		trb->ctrl |= DWC3_TRB_CTRL_CSP;  in dwc3_prepare_one_trb()
1327 		trb->ctrl |= DWC3_TRB_CTRL_IOC;  in dwc3_prepare_one_trb()
1330 		trb->ctrl |= DWC3_TRB_CTRL_CHN;  in dwc3_prepare_one_trb()
1331 	else if (dep->stream_capable && is_last &&  in dwc3_prepare_one_trb()
1332 		 !DWC3_MST_CAPABLE(&dwc->hwparams))  in dwc3_prepare_one_trb()
1333 		trb->ctrl |= DWC3_TRB_CTRL_LST;  in dwc3_prepare_one_trb()
1335 	if (usb_endpoint_xfer_bulk(dep->endpoint.desc) && dep->stream_capable)  in dwc3_prepare_one_trb()
1336 		trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(stream_id);  in dwc3_prepare_one_trb()
1346 	 * However there is a possibility of CPU re-ordering here which can cause  in dwc3_prepare_one_trb()
1348 	 * Add a write memory barrier to prevent CPU re-ordering.  in dwc3_prepare_one_trb()
1351 	trb->ctrl |= DWC3_TRB_CTRL_HWO;  in dwc3_prepare_one_trb()
1360 	unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc);  in dwc3_needs_extra_trb()
1361 	unsigned int rem = req->request.length % maxp;  in dwc3_needs_extra_trb()
1363 	if ((req->request.length && req->request.zero && !rem &&  in dwc3_needs_extra_trb()
1364 			!usb_endpoint_xfer_isoc(dep->endpoint.desc)) ||  in dwc3_needs_extra_trb()
1365 			(!req->direction && rem))  in dwc3_needs_extra_trb()
1372  * dwc3_prepare_last_sg - prepare TRBs for the last SG entry
1384 	unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc);  in dwc3_prepare_last_sg()
1385 	unsigned int rem = req->request.length % maxp;  in dwc3_prepare_last_sg()
1394 	req->needs_extra_trb = num_trbs > 1;  in dwc3_prepare_last_sg()
1397 	if (req->direction || req->request.length)  in dwc3_prepare_last_sg()
1399 				req->needs_extra_trb, node, false, false);  in dwc3_prepare_last_sg()
1402 	if ((!req->direction && !req->request.length) || req->needs_extra_trb)  in dwc3_prepare_last_sg()
1404 				req->direction ? 0 : maxp - rem,  in dwc3_prepare_last_sg()
1413 	struct scatterlist *sg = req->start_sg;  in dwc3_prepare_trbs_sg()
1416 	unsigned int length = req->request.length;  in dwc3_prepare_trbs_sg()
1417 	unsigned int remaining = req->request.num_mapped_sgs  in dwc3_prepare_trbs_sg()
1418 		- req->num_queued_sgs;  in dwc3_prepare_trbs_sg()
1419 	unsigned int num_trbs = req->num_trbs;  in dwc3_prepare_trbs_sg()
1426 	for_each_sg(req->request.sg, s, req->num_queued_sgs, i)  in dwc3_prepare_trbs_sg()
1427 		length -= sg_dma_len(s);  in dwc3_prepare_trbs_sg()
1437 		length -= trb_length;  in dwc3_prepare_trbs_sg()
1446 		if ((i == remaining - 1) || !length)  in dwc3_prepare_trbs_sg()
1468 				list_for_each_entry(r, &dep->started_list, list) {  in dwc3_prepare_trbs_sg()
1469 					if (r != req && !r->request.no_interrupt)  in dwc3_prepare_trbs_sg()
1489 			req->start_sg = sg_next(s);  in dwc3_prepare_trbs_sg()
1491 		req->num_queued_sgs++;  in dwc3_prepare_trbs_sg()
1492 		req->num_pending_sgs--;  in dwc3_prepare_trbs_sg()
1500 			req->num_pending_sgs = 0;  in dwc3_prepare_trbs_sg()
1508 	return req->num_trbs - num_trbs;  in dwc3_prepare_trbs_sg()
1514 	return dwc3_prepare_last_sg(dep, req, req->request.length, 0);  in dwc3_prepare_trbs_linear()
1518  * dwc3_prepare_trbs - setup TRBs from requests
1544 	list_for_each_entry(req, &dep->started_list, list) {  in dwc3_prepare_trbs()
1545 		if (req->num_pending_sgs > 0) {  in dwc3_prepare_trbs()
1547 			if (!ret || req->num_pending_sgs)  in dwc3_prepare_trbs()
1559 		if (dep->stream_capable && req->request.is_last &&  in dwc3_prepare_trbs()
1560 		    !DWC3_MST_CAPABLE(&dep->dwc->hwparams))  in dwc3_prepare_trbs()
1564 	list_for_each_entry_safe(req, n, &dep->pending_list, list) {  in dwc3_prepare_trbs()
1565 		struct dwc3	*dwc = dep->dwc;  in dwc3_prepare_trbs()
1567 		ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request,  in dwc3_prepare_trbs()
1568 						    dep->direction);  in dwc3_prepare_trbs()
1572 		req->sg			= req->request.sg;  in dwc3_prepare_trbs()
1573 		req->start_sg		= req->sg;  in dwc3_prepare_trbs()
1574 		req->num_queued_sgs	= 0;  in dwc3_prepare_trbs()
1575 		req->num_pending_sgs	= req->request.num_mapped_sgs;  in dwc3_prepare_trbs()
1577 		if (req->num_pending_sgs > 0) {  in dwc3_prepare_trbs()
1579 			if (req->num_pending_sgs)  in dwc3_prepare_trbs()
1593 		if (dep->stream_capable && req->request.is_last &&  in dwc3_prepare_trbs()
1594 		    !DWC3_MST_CAPABLE(&dwc->hwparams))  in dwc3_prepare_trbs()
1620 	starting = !(dep->flags & DWC3_EP_TRANSFER_STARTED);  in __dwc3_gadget_kick_transfer()
1629 	req = next_request(&dep->started_list);  in __dwc3_gadget_kick_transfer()
1631 		dep->flags |= DWC3_EP_PENDING_REQUEST;  in __dwc3_gadget_kick_transfer()
1638 		params.param0 = upper_32_bits(req->trb_dma);  in __dwc3_gadget_kick_transfer()
1639 		params.param1 = lower_32_bits(req->trb_dma);  in __dwc3_gadget_kick_transfer()
1642 		if (dep->stream_capable)  in __dwc3_gadget_kick_transfer()
1643 			cmd |= DWC3_DEPCMD_PARAM(req->request.stream_id);  in __dwc3_gadget_kick_transfer()
1645 		if (usb_endpoint_xfer_isoc(dep->endpoint.desc))  in __dwc3_gadget_kick_transfer()
1646 			cmd |= DWC3_DEPCMD_PARAM(dep->frame_number);  in __dwc3_gadget_kick_transfer()
1649 			DWC3_DEPCMD_PARAM(dep->resource_index);  in __dwc3_gadget_kick_transfer()
1656 		if (ret == -EAGAIN)  in __dwc3_gadget_kick_transfer()
1661 		list_for_each_entry_safe(req, tmp, &dep->started_list, list)  in __dwc3_gadget_kick_transfer()
1665 		if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING))  in __dwc3_gadget_kick_transfer()
1671 	if (dep->stream_capable && req->request.is_last &&  in __dwc3_gadget_kick_transfer()
1672 	    !DWC3_MST_CAPABLE(&dep->dwc->hwparams))  in __dwc3_gadget_kick_transfer()
1673 		dep->flags |= DWC3_EP_WAIT_TRANSFER_COMPLETE;  in __dwc3_gadget_kick_transfer()
1682 	reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in __dwc3_gadget_get_frame()
1687  * __dwc3_stop_active_transfer - stop the current active transfer
1706 	cmd |= DWC3_DEPCMD_PARAM(dep->resource_index);  in __dwc3_stop_active_transfer()
1715 	if (ret == -ETIMEDOUT && dep->dwc->ep0state != EP0_SETUP_PHASE) {  in __dwc3_stop_active_transfer()
1716 		dep->flags |= DWC3_EP_DELAY_STOP;  in __dwc3_stop_active_transfer()
1720 	dep->resource_index = 0;  in __dwc3_stop_active_transfer()
1723 		dep->flags &= ~DWC3_EP_TRANSFER_STARTED;  in __dwc3_stop_active_transfer()
1725 		dep->flags |= DWC3_EP_END_TRANSFER_PENDING;  in __dwc3_stop_active_transfer()
1727 	dep->flags &= ~DWC3_EP_DELAY_STOP;  in __dwc3_stop_active_transfer()
1732  * dwc3_gadget_start_isoc_quirk - workaround invalid frame number
1735  * This function tests for the correct combination of BIT[15:14] from the 16-bit
1739  * In DWC_usb31 version 1.70a-ea06 and prior, for highspeed and fullspeed
1740  * isochronous IN, BIT[15:14] of the 16-bit microframe number reported by the
1744  * internal 16-bit microframe, the START TRANSFER command will pass and the
1747  * other conditions, the START TRANSFER command will fail with bus-expiry.
1752  * (or 2 seconds). 4 seconds into the future will result in a bus-expiry status.
1755  * command status will result in a 2-second delay start. The smaller BIT[15:14]
1779 	while (dep->combo_num < 2) {  in dwc3_gadget_start_isoc_quirk()
1786 		 * 4 uframes in the future with BIT[15:14] as dep->combo_num  in dwc3_gadget_start_isoc_quirk()
1788 		test_frame_number = dep->frame_number & DWC3_FRNUMBER_MASK;  in dwc3_gadget_start_isoc_quirk()
1789 		test_frame_number |= dep->combo_num << 14;  in dwc3_gadget_start_isoc_quirk()
1790 		test_frame_number += max_t(u32, 4, dep->interval);  in dwc3_gadget_start_isoc_quirk()
1792 		params.param0 = upper_32_bits(dep->dwc->bounce_addr);  in dwc3_gadget_start_isoc_quirk()
1793 		params.param1 = lower_32_bits(dep->dwc->bounce_addr);  in dwc3_gadget_start_isoc_quirk()
1799 		/* Redo if some other failure beside bus-expiry is received */  in dwc3_gadget_start_isoc_quirk()
1800 		if (cmd_status && cmd_status != -EAGAIN) {  in dwc3_gadget_start_isoc_quirk()
1801 			dep->start_cmd_status = 0;  in dwc3_gadget_start_isoc_quirk()
1802 			dep->combo_num = 0;  in dwc3_gadget_start_isoc_quirk()
1807 		if (dep->combo_num == 0)  in dwc3_gadget_start_isoc_quirk()
1808 			dep->start_cmd_status = cmd_status;  in dwc3_gadget_start_isoc_quirk()
1810 		dep->combo_num++;  in dwc3_gadget_start_isoc_quirk()
1823 	test0 = (dep->start_cmd_status == 0);  in dwc3_gadget_start_isoc_quirk()
1827 		dep->combo_num = 1;  in dwc3_gadget_start_isoc_quirk()
1829 		dep->combo_num = 2;  in dwc3_gadget_start_isoc_quirk()
1831 		dep->combo_num = 3;  in dwc3_gadget_start_isoc_quirk()
1833 		dep->combo_num = 0;  in dwc3_gadget_start_isoc_quirk()
1835 	dep->frame_number &= DWC3_FRNUMBER_MASK;  in dwc3_gadget_start_isoc_quirk()
1836 	dep->frame_number |= dep->combo_num << 14;  in dwc3_gadget_start_isoc_quirk()
1837 	dep->frame_number += max_t(u32, 4, dep->interval);  in dwc3_gadget_start_isoc_quirk()
1840 	dep->start_cmd_status = 0;  in dwc3_gadget_start_isoc_quirk()
1841 	dep->combo_num = 0;  in dwc3_gadget_start_isoc_quirk()
1848 	const struct usb_endpoint_descriptor *desc = dep->endpoint.desc;  in __dwc3_gadget_start_isoc()
1849 	struct dwc3 *dwc = dep->dwc;  in __dwc3_gadget_start_isoc()
1853 	if (list_empty(&dep->pending_list) &&  in __dwc3_gadget_start_isoc()
1854 	    list_empty(&dep->started_list)) {  in __dwc3_gadget_start_isoc()
1855 		dep->flags |= DWC3_EP_PENDING_REQUEST;  in __dwc3_gadget_start_isoc()
1856 		return -EAGAIN;  in __dwc3_gadget_start_isoc()
1859 	if (!dwc->dis_start_transfer_quirk &&  in __dwc3_gadget_start_isoc()
1862 		if (dwc->gadget->speed <= USB_SPEED_HIGH && dep->direction)  in __dwc3_gadget_start_isoc()
1866 	if (desc->bInterval <= 14 &&  in __dwc3_gadget_start_isoc()
1867 	    dwc->gadget->speed >= USB_SPEED_HIGH) {  in __dwc3_gadget_start_isoc()
1870 				(dep->frame_number & DWC3_FRNUMBER_MASK);  in __dwc3_gadget_start_isoc()
1881 		dep->frame_number = (dep->frame_number & ~DWC3_FRNUMBER_MASK) |  in __dwc3_gadget_start_isoc()
1884 			dep->frame_number += BIT(14);  in __dwc3_gadget_start_isoc()
1891 		if (desc->bInterval < 3)  in __dwc3_gadget_start_isoc()
1892 			future_interval += 3 - desc->bInterval;  in __dwc3_gadget_start_isoc()
1894 		dep->frame_number = DWC3_ALIGN_FRAME(dep, future_interval);  in __dwc3_gadget_start_isoc()
1897 		if (ret != -EAGAIN)  in __dwc3_gadget_start_isoc()
1902 	 * After a number of unsuccessful start attempts due to bus-expiry  in __dwc3_gadget_start_isoc()
1906 	if (ret == -EAGAIN)  in __dwc3_gadget_start_isoc()
1914 	struct dwc3		*dwc = dep->dwc;  in __dwc3_gadget_ep_queue()
1916 	if (!dep->endpoint.desc || !dwc->pullups_connected || !dwc->connected) {  in __dwc3_gadget_ep_queue()
1917 		dev_dbg(dwc->dev, "%s: can't queue to disabled endpoint\n",  in __dwc3_gadget_ep_queue()
1918 				dep->name);  in __dwc3_gadget_ep_queue()
1919 		return -ESHUTDOWN;  in __dwc3_gadget_ep_queue()
1922 	if (WARN(req->dep != dep, "request %pK belongs to '%s'\n",  in __dwc3_gadget_ep_queue()
1923 				&req->request, req->dep->name))  in __dwc3_gadget_ep_queue()
1924 		return -EINVAL;  in __dwc3_gadget_ep_queue()
1926 	if (WARN(req->status < DWC3_REQUEST_STATUS_COMPLETED,  in __dwc3_gadget_ep_queue()
1928 				dep->name, &req->request))  in __dwc3_gadget_ep_queue()
1929 		return -EINVAL;  in __dwc3_gadget_ep_queue()
1931 	pm_runtime_get(dwc->dev);  in __dwc3_gadget_ep_queue()
1933 	req->request.actual	= 0;  in __dwc3_gadget_ep_queue()
1934 	req->request.status	= -EINPROGRESS;  in __dwc3_gadget_ep_queue()
1938 	list_add_tail(&req->list, &dep->pending_list);  in __dwc3_gadget_ep_queue()
1939 	req->status = DWC3_REQUEST_STATUS_QUEUED;  in __dwc3_gadget_ep_queue()
1941 	if (dep->flags & DWC3_EP_WAIT_TRANSFER_COMPLETE)  in __dwc3_gadget_ep_queue()
1948 	if ((dep->flags & DWC3_EP_END_TRANSFER_PENDING) ||  in __dwc3_gadget_ep_queue()
1949 	    (dep->flags & DWC3_EP_WEDGE) ||  in __dwc3_gadget_ep_queue()
1950 	    (dep->flags & DWC3_EP_DELAY_STOP) ||  in __dwc3_gadget_ep_queue()
1951 	    (dep->flags & DWC3_EP_STALL)) {  in __dwc3_gadget_ep_queue()
1952 		dep->flags |= DWC3_EP_DELAY_START;  in __dwc3_gadget_ep_queue()
1959 	 * (micro-)frame number.  in __dwc3_gadget_ep_queue()
1964 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {  in __dwc3_gadget_ep_queue()
1965 		if (!(dep->flags & DWC3_EP_TRANSFER_STARTED)) {  in __dwc3_gadget_ep_queue()
1966 			if ((dep->flags & DWC3_EP_PENDING_REQUEST))  in __dwc3_gadget_ep_queue()
1983 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_queue()
1989 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_queue()
1991 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_queue()
2000 	/* If req->trb is not set, then the request has not started */  in dwc3_gadget_ep_skip_trbs()
2001 	if (!req->trb)  in dwc3_gadget_ep_skip_trbs()
2014 	for (i = 0; i < req->num_trbs; i++) {  in dwc3_gadget_ep_skip_trbs()
2017 		trb = &dep->trb_pool[dep->trb_dequeue];  in dwc3_gadget_ep_skip_trbs()
2018 		trb->ctrl &= ~DWC3_TRB_CTRL_HWO;  in dwc3_gadget_ep_skip_trbs()
2022 	req->num_trbs = 0;  in dwc3_gadget_ep_skip_trbs()
2028 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_cleanup_cancelled_requests()
2030 	while (!list_empty(&dep->cancelled_list)) {  in dwc3_gadget_ep_cleanup_cancelled_requests()
2031 		req = next_request(&dep->cancelled_list);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2033 		switch (req->status) {  in dwc3_gadget_ep_cleanup_cancelled_requests()
2035 			dwc3_gadget_giveback(dep, req, -ESHUTDOWN);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2038 			dwc3_gadget_giveback(dep, req, -ECONNRESET);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2041 			dwc3_gadget_giveback(dep, req, -EPIPE);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2044 			dev_err(dwc->dev, "request cancelled with wrong reason:%d\n", req->status);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2045 			dwc3_gadget_giveback(dep, req, -ECONNRESET);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2052 		if (!dep->endpoint.desc)  in dwc3_gadget_ep_cleanup_cancelled_requests()
2064 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_dequeue()
2071 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_dequeue()
2073 	list_for_each_entry(r, &dep->cancelled_list, list) {  in dwc3_gadget_ep_dequeue()
2078 	list_for_each_entry(r, &dep->pending_list, list) {  in dwc3_gadget_ep_dequeue()
2087 			if (dep->number > 1)  in dwc3_gadget_ep_dequeue()
2088 				dwc3_gadget_giveback(dep, req, -ECONNRESET);  in dwc3_gadget_ep_dequeue()
2095 	list_for_each_entry(r, &dep->started_list, list) {  in dwc3_gadget_ep_dequeue()
2106 			list_for_each_entry_safe(r, t, &dep->started_list, list)  in dwc3_gadget_ep_dequeue()
2110 			dep->flags &= ~DWC3_EP_WAIT_TRANSFER_COMPLETE;  in dwc3_gadget_ep_dequeue()
2116 	dev_err(dwc->dev, "request %pK was not queued to %s\n",  in dwc3_gadget_ep_dequeue()
2117 		request, ep->name);  in dwc3_gadget_ep_dequeue()
2118 	ret = -EINVAL;  in dwc3_gadget_ep_dequeue()
2120 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_dequeue()
2128 	struct dwc3				*dwc = dep->dwc;  in __dwc3_gadget_ep_set_halt()
2133 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {  in __dwc3_gadget_ep_set_halt()
2134 		dev_err(dwc->dev, "%s is of Isochronous type\n", dep->name);  in __dwc3_gadget_ep_set_halt()
2135 		return -EINVAL;  in __dwc3_gadget_ep_set_halt()
2146 		if (dep->number > 1)  in __dwc3_gadget_ep_set_halt()
2147 			trb = dwc3_ep_prev_trb(dep, dep->trb_enqueue);  in __dwc3_gadget_ep_set_halt()
2149 			trb = &dwc->ep0_trb[dep->trb_enqueue];  in __dwc3_gadget_ep_set_halt()
2151 		transfer_in_flight = trb->ctrl & DWC3_TRB_CTRL_HWO;  in __dwc3_gadget_ep_set_halt()
2152 		started = !list_empty(&dep->started_list);  in __dwc3_gadget_ep_set_halt()
2154 		if (!protocol && ((dep->direction && transfer_in_flight) ||  in __dwc3_gadget_ep_set_halt()
2155 				(!dep->direction && started))) {  in __dwc3_gadget_ep_set_halt()
2156 			return -EAGAIN;  in __dwc3_gadget_ep_set_halt()
2162 			dev_err(dwc->dev, "failed to set STALL on %s\n",  in __dwc3_gadget_ep_set_halt()
2163 					dep->name);  in __dwc3_gadget_ep_set_halt()
2165 			dep->flags |= DWC3_EP_STALL;  in __dwc3_gadget_ep_set_halt()
2172 		if (dep->number <= 1) {  in __dwc3_gadget_ep_set_halt()
2173 			dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);  in __dwc3_gadget_ep_set_halt()
2179 		list_for_each_entry_safe(req, tmp, &dep->started_list, list)  in __dwc3_gadget_ep_set_halt()
2182 		if (dep->flags & DWC3_EP_END_TRANSFER_PENDING ||  in __dwc3_gadget_ep_set_halt()
2183 		    (dep->flags & DWC3_EP_DELAY_STOP)) {  in __dwc3_gadget_ep_set_halt()
2184 			dep->flags |= DWC3_EP_PENDING_CLEAR_STALL;  in __dwc3_gadget_ep_set_halt()
2186 				dwc->clear_stall_protocol = dep->number;  in __dwc3_gadget_ep_set_halt()
2195 			dev_err(dwc->dev, "failed to clear STALL on %s\n",  in __dwc3_gadget_ep_set_halt()
2196 					dep->name);  in __dwc3_gadget_ep_set_halt()
2200 		dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);  in __dwc3_gadget_ep_set_halt()
2202 		if ((dep->flags & DWC3_EP_DELAY_START) &&  in __dwc3_gadget_ep_set_halt()
2203 		    !usb_endpoint_xfer_isoc(dep->endpoint.desc))  in __dwc3_gadget_ep_set_halt()
2206 		dep->flags &= ~DWC3_EP_DELAY_START;  in __dwc3_gadget_ep_set_halt()
2215 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_set_halt()
2221 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_set_halt()
2223 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_set_halt()
2231 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_set_wedge()
2235 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_set_wedge()
2236 	dep->flags |= DWC3_EP_WEDGE;  in dwc3_gadget_ep_set_wedge()
2238 	if (dep->number == 0 || dep->number == 1)  in dwc3_gadget_ep_set_wedge()
2242 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_set_wedge()
2247 /* -------------------------------------------------------------------------- */
2277 /* -------------------------------------------------------------------------- */
2286 	reg = dwc3_readl(dwc->regs, DWC3_DEVTEN);  in dwc3_gadget_enable_linksts_evts()
2292 	dwc3_writel(dwc->regs, DWC3_DEVTEN, reg);  in dwc3_gadget_enable_linksts_evts()
2317 	reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in __dwc3_gadget_wakeup()
2330 		return -EINVAL;  in __dwc3_gadget_wakeup()
2338 		dev_err(dwc->dev, "failed to put link in Recovery\n");  in __dwc3_gadget_wakeup()
2346 		reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in __dwc3_gadget_wakeup()
2348 		dwc3_writel(dwc->regs, DWC3_DCTL, reg);  in __dwc3_gadget_wakeup()
2361 	while (retries--) {  in __dwc3_gadget_wakeup()
2362 		reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in __dwc3_gadget_wakeup()
2370 		dev_err(dwc->dev, "failed to send remote wakeup\n");  in __dwc3_gadget_wakeup()
2371 		return -EINVAL;  in __dwc3_gadget_wakeup()
2383 	if (!dwc->wakeup_configured) {  in dwc3_gadget_wakeup()
2384 		dev_err(dwc->dev, "remote wakeup not configured\n");  in dwc3_gadget_wakeup()
2385 		return -EINVAL;  in dwc3_gadget_wakeup()
2388 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_wakeup()
2389 	if (!dwc->gadget->wakeup_armed) {  in dwc3_gadget_wakeup()
2390 		dev_err(dwc->dev, "not armed for remote wakeup\n");  in dwc3_gadget_wakeup()
2391 		spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_wakeup()
2392 		return -EINVAL;  in dwc3_gadget_wakeup()
2396 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_wakeup()
2410 	if (!dwc->wakeup_configured) {  in dwc3_gadget_func_wakeup()
2411 		dev_err(dwc->dev, "remote wakeup not configured\n");  in dwc3_gadget_func_wakeup()
2412 		return -EINVAL;  in dwc3_gadget_func_wakeup()
2415 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_func_wakeup()
2424 			spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_func_wakeup()
2425 			return -EINVAL;  in dwc3_gadget_func_wakeup()
2428 		dwc->suspended = false;  in dwc3_gadget_func_wakeup()
2429 		dwc->link_state = DWC3_LINK_STATE_U0;  in dwc3_gadget_func_wakeup()
2436 		dev_err(dwc->dev, "function remote wakeup failed, ret:%d\n", ret);  in dwc3_gadget_func_wakeup()
2438 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_func_wakeup()
2448 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_set_remote_wakeup()
2449 	dwc->wakeup_configured = !!set;  in dwc3_gadget_set_remote_wakeup()
2450 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_set_remote_wakeup()
2461 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_set_selfpowered()
2462 	g->is_selfpowered = !!is_selfpowered;  in dwc3_gadget_set_selfpowered()
2463 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_set_selfpowered()
2472 	for (epnum = 2; epnum < dwc->num_eps; epnum++) {  in dwc3_stop_active_transfers()
2475 		dep = dwc->eps[epnum];  in dwc3_stop_active_transfers()
2479 		dwc3_remove_requests(dwc, dep, -ESHUTDOWN);  in dwc3_stop_active_transfers()
2485 	enum usb_ssp_rate	ssp_rate = dwc->gadget_ssp_rate;  in __dwc3_gadget_set_ssp_rate()
2489 		ssp_rate = dwc->max_ssp_rate;  in __dwc3_gadget_set_ssp_rate()
2491 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in __dwc3_gadget_set_ssp_rate()
2497 	else if (dwc->max_ssp_rate != USB_SSP_GEN_1x2)  in __dwc3_gadget_set_ssp_rate()
2501 	    dwc->max_ssp_rate != USB_SSP_GEN_2x1)  in __dwc3_gadget_set_ssp_rate()
2504 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in __dwc3_gadget_set_ssp_rate()
2512 	speed = dwc->gadget_max_speed;  in __dwc3_gadget_set_speed()
2513 	if (speed == USB_SPEED_UNKNOWN || speed > dwc->maximum_speed)  in __dwc3_gadget_set_speed()
2514 		speed = dwc->maximum_speed;  in __dwc3_gadget_set_speed()
2522 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in __dwc3_gadget_set_speed()
2528 	 * bit if we try to force the IP to USB2-only mode.  in __dwc3_gadget_set_speed()
2539 	    !dwc->dis_metastability_quirk) {  in __dwc3_gadget_set_speed()
2559 			dev_err(dwc->dev, "invalid speed (%d)\n", speed);  in __dwc3_gadget_set_speed()
2573 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in __dwc3_gadget_set_speed()
2581 	if (pm_runtime_suspended(dwc->dev))  in dwc3_gadget_run_stop()
2584 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_run_stop()
2596 		dwc->pullups_connected = true;  in dwc3_gadget_run_stop()
2600 		dwc->pullups_connected = false;  in dwc3_gadget_run_stop()
2607 		reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in dwc3_gadget_run_stop()
2609 	} while (--timeout && !(!is_on ^ !reg));  in dwc3_gadget_run_stop()
2612 		return -ETIMEDOUT;  in dwc3_gadget_run_stop()
2626 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2627 	if (!dwc->pullups_connected) {  in dwc3_gadget_soft_disconnect()
2628 		spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2632 	dwc->connected = false;  in dwc3_gadget_soft_disconnect()
2638 	if (dwc->delayed_status)  in dwc3_gadget_soft_disconnect()
2643 	 * Section 4.1.8 Table 4-7, it states that for a device-initiated  in dwc3_gadget_soft_disconnect()
2649 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2658 	if (dwc->ep0state != EP0_SETUP_PHASE) {  in dwc3_gadget_soft_disconnect()
2659 		reinit_completion(&dwc->ep0_in_setup);  in dwc3_gadget_soft_disconnect()
2661 		ret = wait_for_completion_timeout(&dwc->ep0_in_setup,  in dwc3_gadget_soft_disconnect()
2664 			dev_warn(dwc->dev, "wait for SETUP phase timed out\n");  in dwc3_gadget_soft_disconnect()
2665 			spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2667 			spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2686 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2688 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2700 	 * device-initiated disconnect requires a core soft reset  in dwc3_gadget_soft_connect()
2719 	dwc->softconnect = is_on;  in dwc3_gadget_pullup()
2727 		pm_runtime_barrier(dwc->dev);  in dwc3_gadget_pullup()
2728 		if (pm_runtime_suspended(dwc->dev))  in dwc3_gadget_pullup()
2737 	ret = pm_runtime_get_sync(dwc->dev);  in dwc3_gadget_pullup()
2739 		pm_runtime_put(dwc->dev);  in dwc3_gadget_pullup()
2741 			pm_runtime_set_suspended(dwc->dev);  in dwc3_gadget_pullup()
2745 	if (dwc->pullups_connected == is_on) {  in dwc3_gadget_pullup()
2746 		pm_runtime_put(dwc->dev);  in dwc3_gadget_pullup()
2750 	synchronize_irq(dwc->irq_gadget);  in dwc3_gadget_pullup()
2757 	pm_runtime_put(dwc->dev);  in dwc3_gadget_pullup()
2778 	/* On 2.30a and above this bit enables U3/L2-L1 Suspend Events */  in dwc3_gadget_enable_irq()
2782 	dwc3_writel(dwc->regs, DWC3_DEVTEN, reg);  in dwc3_gadget_enable_irq()
2788 	dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00);  in dwc3_gadget_disable_irq()
2795  * dwc3_gadget_setup_nump - calculate and initialize NUMP field of %DWC3_DCFG
2808  * RxFIFO Size = (RAM2_DEPTH * MDWIDTH / 8) - 24 - 16;
2822 	ram2_depth = DWC3_GHWPARAMS7_RAM2_DEPTH(dwc->hwparams.hwparams7);  in dwc3_gadget_setup_nump()
2825 	nump = ((ram2_depth * mdwidth / 8) - 24 - 16) / 1024;  in dwc3_gadget_setup_nump()
2829 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in dwc3_gadget_setup_nump()
2832 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in dwc3_gadget_setup_nump()
2842 	 * Use IMOD if enabled via dwc->imod_interval. Otherwise, if  in __dwc3_gadget_start()
2845 	if (dwc->imod_interval) {  in __dwc3_gadget_start()
2846 		dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), dwc->imod_interval);  in __dwc3_gadget_start()
2847 		dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), DWC3_GEVNTCOUNT_EHB);  in __dwc3_gadget_start()
2849 		dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), 0);  in __dwc3_gadget_start()
2859 	reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG);  in __dwc3_gadget_start()
2865 	dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg);  in __dwc3_gadget_start()
2876 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in __dwc3_gadget_start()
2878 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in __dwc3_gadget_start()
2881 	if (DWC3_MST_CAPABLE(&dwc->hwparams)) {  in __dwc3_gadget_start()
2882 		reg = dwc3_readl(dwc->regs, DWC3_DCFG1);  in __dwc3_gadget_start()
2884 		dwc3_writel(dwc->regs, DWC3_DCFG1, reg);  in __dwc3_gadget_start()
2892 		dev_err(dwc->dev, "failed to config endpoints\n");  in __dwc3_gadget_start()
2896 	dep = dwc->eps[0];  in __dwc3_gadget_start()
2897 	dep->flags = 0;  in __dwc3_gadget_start()
2900 		dev_err(dwc->dev, "failed to enable %s\n", dep->name);  in __dwc3_gadget_start()
2904 	dep = dwc->eps[1];  in __dwc3_gadget_start()
2905 	dep->flags = 0;  in __dwc3_gadget_start()
2908 		dev_err(dwc->dev, "failed to enable %s\n", dep->name);  in __dwc3_gadget_start()
2913 	dwc->ep0state = EP0_SETUP_PHASE;  in __dwc3_gadget_start()
2914 	dwc->ep0_bounced = false;  in __dwc3_gadget_start()
2915 	dwc->link_state = DWC3_LINK_STATE_SS_DIS;  in __dwc3_gadget_start()
2916 	dwc->delayed_status = false;  in __dwc3_gadget_start()
2925 	__dwc3_gadget_ep_disable(dwc->eps[0]);  in __dwc3_gadget_start()
2939 	irq = dwc->irq_gadget;  in dwc3_gadget_start()
2941 			IRQF_SHARED, "dwc3", dwc->ev_buf);  in dwc3_gadget_start()
2943 		dev_err(dwc->dev, "failed to request irq #%d --> %d\n",  in dwc3_gadget_start()
2948 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_start()
2949 	dwc->gadget_driver	= driver;  in dwc3_gadget_start()
2950 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_start()
2952 	if (dwc->sys_wakeup)  in dwc3_gadget_start()
2953 		device_wakeup_enable(dwc->sysdev);  in dwc3_gadget_start()
2961 	__dwc3_gadget_ep_disable(dwc->eps[0]);  in __dwc3_gadget_stop()
2962 	__dwc3_gadget_ep_disable(dwc->eps[1]);  in __dwc3_gadget_stop()
2970 	if (dwc->sys_wakeup)  in dwc3_gadget_stop()
2971 		device_wakeup_disable(dwc->sysdev);  in dwc3_gadget_stop()
2973 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_stop()
2974 	dwc->gadget_driver	= NULL;  in dwc3_gadget_stop()
2975 	dwc->max_cfg_eps = 0;  in dwc3_gadget_stop()
2976 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_stop()
2978 	free_irq(dwc->irq_gadget, dwc->ev_buf);  in dwc3_gadget_stop()
2988 	params->besl_baseline = USB_DEFAULT_BESL_UNSPECIFIED;  in dwc3_gadget_config_params()
2989 	params->besl_deep = USB_DEFAULT_BESL_UNSPECIFIED;  in dwc3_gadget_config_params()
2992 	if (!dwc->dis_enblslpm_quirk) {  in dwc3_gadget_config_params()
3002 		params->besl_baseline = 1;  in dwc3_gadget_config_params()
3003 		if (dwc->is_utmi_l1_suspend)  in dwc3_gadget_config_params()
3004 			params->besl_deep =  in dwc3_gadget_config_params()
3005 				clamp_t(u8, dwc->hird_threshold, 2, 15);  in dwc3_gadget_config_params()
3009 	if (dwc->dis_u1_entry_quirk)  in dwc3_gadget_config_params()
3010 		params->bU1devExitLat = 0;  in dwc3_gadget_config_params()
3012 		params->bU1devExitLat = DWC3_DEFAULT_U1_DEV_EXIT_LAT;  in dwc3_gadget_config_params()
3015 	if (dwc->dis_u2_entry_quirk)  in dwc3_gadget_config_params()
3016 		params->bU2DevExitLat = 0;  in dwc3_gadget_config_params()
3018 		params->bU2DevExitLat =  in dwc3_gadget_config_params()
3028 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_set_speed()
3029 	dwc->gadget_max_speed = speed;  in dwc3_gadget_set_speed()
3030 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_set_speed()
3039 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_set_ssp_rate()
3040 	dwc->gadget_max_speed = USB_SPEED_SUPER_PLUS;  in dwc3_gadget_set_ssp_rate()
3041 	dwc->gadget_ssp_rate = rate;  in dwc3_gadget_set_ssp_rate()
3042 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_set_ssp_rate()
3051 	if (dwc->usb2_phy)  in dwc3_gadget_vbus_draw()
3052 		return usb_phy_set_power(dwc->usb2_phy, mA);  in dwc3_gadget_vbus_draw()
3054 	if (!dwc->usb_psy)  in dwc3_gadget_vbus_draw()
3055 		return -EOPNOTSUPP;  in dwc3_gadget_vbus_draw()
3058 	ret = power_supply_set_property(dwc->usb_psy, POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, &val);  in dwc3_gadget_vbus_draw()
3064  * dwc3_gadget_check_config - ensure dwc3 can support the USB configuration
3081 	if (!dwc->do_fifo_resize)  in dwc3_gadget_check_config()
3084 	list_for_each_entry(ep, &g->ep_list, ep_list) {  in dwc3_gadget_check_config()
3086 		if (ep->claimed && (ep->address & USB_DIR_IN))  in dwc3_gadget_check_config()
3090 	if (ep_num <= dwc->max_cfg_eps)  in dwc3_gadget_check_config()
3094 	dwc->max_cfg_eps = ep_num;  in dwc3_gadget_check_config()
3096 	fifo_size = dwc3_gadget_calc_tx_fifo_size(dwc, dwc->max_cfg_eps);  in dwc3_gadget_check_config()
3098 	fifo_size += dwc->max_cfg_eps;  in dwc3_gadget_check_config()
3101 	ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7);  in dwc3_gadget_check_config()
3103 		return -ENOMEM;  in dwc3_gadget_check_config()
3113 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_async_callbacks()
3114 	dwc->async_callbacks = enable;  in dwc3_gadget_async_callbacks()
3115 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_async_callbacks()
3135 /* -------------------------------------------------------------------------- */
3139 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_init_control_endpoint()
3141 	usb_ep_set_maxpacket_limit(&dep->endpoint, 512);  in dwc3_gadget_init_control_endpoint()
3142 	dep->endpoint.maxburst = 1;  in dwc3_gadget_init_control_endpoint()
3143 	dep->endpoint.ops = &dwc3_gadget_ep0_ops;  in dwc3_gadget_init_control_endpoint()
3144 	if (!dep->direction)  in dwc3_gadget_init_control_endpoint()
3145 		dwc->gadget->ep0 = &dep->endpoint;  in dwc3_gadget_init_control_endpoint()
3147 	dep->endpoint.caps.type_control = true;  in dwc3_gadget_init_control_endpoint()
3154 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_init_in_endpoint()
3164 	size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(dep->number >> 1));  in dwc3_gadget_init_in_endpoint()
3175 	 * maxpacket = mdwidth * (fifo_size - 1);  in dwc3_gadget_init_in_endpoint()
3179 	 * maxpacket = mdwidth * ((fifo_size - 1) - 1) - mdwidth;  in dwc3_gadget_init_in_endpoint()
3182 		maxpacket = mdwidth * (size - 1);  in dwc3_gadget_init_in_endpoint()
3184 		maxpacket = mdwidth * ((size - 1) - 1) - mdwidth;  in dwc3_gadget_init_in_endpoint()
3188 	usb_ep_set_maxpacket_limit(&dep->endpoint, size);  in dwc3_gadget_init_in_endpoint()
3190 	dep->endpoint.max_streams = 16;  in dwc3_gadget_init_in_endpoint()
3191 	dep->endpoint.ops = &dwc3_gadget_ep_ops;  in dwc3_gadget_init_in_endpoint()
3192 	list_add_tail(&dep->endpoint.ep_list,  in dwc3_gadget_init_in_endpoint()
3193 			&dwc->gadget->ep_list);  in dwc3_gadget_init_in_endpoint()
3194 	dep->endpoint.caps.type_iso = true;  in dwc3_gadget_init_in_endpoint()
3195 	dep->endpoint.caps.type_bulk = true;  in dwc3_gadget_init_in_endpoint()
3196 	dep->endpoint.caps.type_int = true;  in dwc3_gadget_init_in_endpoint()
3203 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_init_out_endpoint()
3213 	size = dwc3_readl(dwc->regs, DWC3_GRXFIFOSIZ(0));  in dwc3_gadget_init_out_endpoint()
3230 	size -= (3 * 8) + 16;  in dwc3_gadget_init_out_endpoint()
3236 	usb_ep_set_maxpacket_limit(&dep->endpoint, size);  in dwc3_gadget_init_out_endpoint()
3237 	dep->endpoint.max_streams = 16;  in dwc3_gadget_init_out_endpoint()
3238 	dep->endpoint.ops = &dwc3_gadget_ep_ops;  in dwc3_gadget_init_out_endpoint()
3239 	list_add_tail(&dep->endpoint.ep_list,  in dwc3_gadget_init_out_endpoint()
3240 			&dwc->gadget->ep_list);  in dwc3_gadget_init_out_endpoint()
3241 	dep->endpoint.caps.type_iso = true;  in dwc3_gadget_init_out_endpoint()
3242 	dep->endpoint.caps.type_bulk = true;  in dwc3_gadget_init_out_endpoint()
3243 	dep->endpoint.caps.type_int = true;  in dwc3_gadget_init_out_endpoint()
3257 		return -ENOMEM;  in dwc3_gadget_init_endpoint()
3259 	dep->dwc = dwc;  in dwc3_gadget_init_endpoint()
3260 	dep->number = epnum;  in dwc3_gadget_init_endpoint()
3261 	dep->direction = direction;  in dwc3_gadget_init_endpoint()
3262 	dep->regs = dwc->regs + DWC3_DEP_BASE(epnum);  in dwc3_gadget_init_endpoint()
3263 	dwc->eps[epnum] = dep;  in dwc3_gadget_init_endpoint()
3264 	dep->combo_num = 0;  in dwc3_gadget_init_endpoint()
3265 	dep->start_cmd_status = 0;  in dwc3_gadget_init_endpoint()
3267 	snprintf(dep->name, sizeof(dep->name), "ep%u%s", num,  in dwc3_gadget_init_endpoint()
3270 	dep->endpoint.name = dep->name;  in dwc3_gadget_init_endpoint()
3272 	if (!(dep->number > 1)) {  in dwc3_gadget_init_endpoint()
3273 		dep->endpoint.desc = &dwc3_gadget_ep0_desc;  in dwc3_gadget_init_endpoint()
3274 		dep->endpoint.comp_desc = NULL;  in dwc3_gadget_init_endpoint()
3287 	dep->endpoint.caps.dir_in = direction;  in dwc3_gadget_init_endpoint()
3288 	dep->endpoint.caps.dir_out = !direction;  in dwc3_gadget_init_endpoint()
3290 	INIT_LIST_HEAD(&dep->pending_list);  in dwc3_gadget_init_endpoint()
3291 	INIT_LIST_HEAD(&dep->started_list);  in dwc3_gadget_init_endpoint()
3292 	INIT_LIST_HEAD(&dep->cancelled_list);  in dwc3_gadget_init_endpoint()
3303 	INIT_LIST_HEAD(&dwc->gadget->ep_list);  in dwc3_gadget_init_endpoints()
3322 		dep = dwc->eps[epnum];  in dwc3_gadget_free_endpoints()
3327 		 * bi-directional USB endpoint 0.  in dwc3_gadget_free_endpoints()
3336 			list_del(&dep->endpoint.ep_list);  in dwc3_gadget_free_endpoints()
3344 /* -------------------------------------------------------------------------- */
3355 	req->num_trbs--;  in dwc3_gadget_ep_reclaim_completed_trb()
3367 	if (chain && (trb->ctrl & DWC3_TRB_CTRL_HWO))  in dwc3_gadget_ep_reclaim_completed_trb()
3368 		trb->ctrl &= ~DWC3_TRB_CTRL_HWO;  in dwc3_gadget_ep_reclaim_completed_trb()
3372 	 * have the Isoc-First type. Track and report its interval frame number.  in dwc3_gadget_ep_reclaim_completed_trb()
3374 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&  in dwc3_gadget_ep_reclaim_completed_trb()
3375 	    (trb->ctrl & DWC3_TRBCTL_ISOCHRONOUS_FIRST)) {  in dwc3_gadget_ep_reclaim_completed_trb()
3378 		frame_number = DWC3_TRB_CTRL_GET_SID_SOFN(trb->ctrl);  in dwc3_gadget_ep_reclaim_completed_trb()
3379 		frame_number &= ~(dep->interval - 1);  in dwc3_gadget_ep_reclaim_completed_trb()
3380 		req->request.frame_number = frame_number;  in dwc3_gadget_ep_reclaim_completed_trb()
3386 	 * TRB. Don't add it to req->remaining calculation.  in dwc3_gadget_ep_reclaim_completed_trb()
3388 	if (trb->bpl == lower_32_bits(dep->dwc->bounce_addr) &&  in dwc3_gadget_ep_reclaim_completed_trb()
3389 	    trb->bph == upper_32_bits(dep->dwc->bounce_addr)) {  in dwc3_gadget_ep_reclaim_completed_trb()
3390 		trb->ctrl &= ~DWC3_TRB_CTRL_HWO;  in dwc3_gadget_ep_reclaim_completed_trb()
3394 	count = trb->size & DWC3_TRB_SIZE_MASK;  in dwc3_gadget_ep_reclaim_completed_trb()
3395 	req->remaining += count;  in dwc3_gadget_ep_reclaim_completed_trb()
3397 	if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)  in dwc3_gadget_ep_reclaim_completed_trb()
3400 	if (event->status & DEPEVT_STATUS_SHORT && !chain)  in dwc3_gadget_ep_reclaim_completed_trb()
3403 	if ((trb->ctrl & DWC3_TRB_CTRL_ISP_IMI) &&  in dwc3_gadget_ep_reclaim_completed_trb()
3404 	    DWC3_TRB_SIZE_TRBSTS(trb->size) == DWC3_TRBSTS_MISSED_ISOC)  in dwc3_gadget_ep_reclaim_completed_trb()
3407 	if ((trb->ctrl & DWC3_TRB_CTRL_IOC) ||  in dwc3_gadget_ep_reclaim_completed_trb()
3408 	    (trb->ctrl & DWC3_TRB_CTRL_LST))  in dwc3_gadget_ep_reclaim_completed_trb()
3419 	struct scatterlist *sg = req->sg;  in dwc3_gadget_ep_reclaim_trb_sg()
3421 	unsigned int num_queued = req->num_queued_sgs;  in dwc3_gadget_ep_reclaim_trb_sg()
3426 		trb = &dep->trb_pool[dep->trb_dequeue];  in dwc3_gadget_ep_reclaim_trb_sg()
3428 		req->sg = sg_next(s);  in dwc3_gadget_ep_reclaim_trb_sg()
3429 		req->num_queued_sgs--;  in dwc3_gadget_ep_reclaim_trb_sg()
3444 	struct dwc3_trb *trb = &dep->trb_pool[dep->trb_dequeue];  in dwc3_gadget_ep_reclaim_trb_linear()
3452 	return req->num_pending_sgs == 0 && req->num_queued_sgs == 0;  in dwc3_gadget_ep_request_completed()
3462 	if (req->request.num_mapped_sgs)  in dwc3_gadget_ep_cleanup_completed_request()
3469 	req->request.actual = req->request.length - req->remaining;  in dwc3_gadget_ep_cleanup_completed_request()
3474 	if (req->needs_extra_trb) {  in dwc3_gadget_ep_cleanup_completed_request()
3477 		req->needs_extra_trb = false;  in dwc3_gadget_ep_cleanup_completed_request()
3486 	if (req->request.no_interrupt) {  in dwc3_gadget_ep_cleanup_completed_request()
3489 		trb = dwc3_ep_prev_trb(dep, dep->trb_dequeue);  in dwc3_gadget_ep_cleanup_completed_request()
3490 		switch (DWC3_TRB_SIZE_TRBSTS(trb->size)) {  in dwc3_gadget_ep_cleanup_completed_request()
3493 			request_status = -EXDEV;  in dwc3_gadget_ep_cleanup_completed_request()
3519 	while (!list_empty(&dep->started_list)) {  in dwc3_gadget_ep_cleanup_completed_requests()
3522 		req = next_request(&dep->started_list);  in dwc3_gadget_ep_cleanup_completed_requests()
3531 		if (!dep->endpoint.desc)  in dwc3_gadget_ep_cleanup_completed_requests()
3539 	struct dwc3		*dwc = dep->dwc;  in dwc3_gadget_ep_should_continue()
3541 	if (!dep->endpoint.desc || !dwc->pullups_connected ||  in dwc3_gadget_ep_should_continue()
3542 	    !dwc->connected)  in dwc3_gadget_ep_should_continue()
3545 	if (!list_empty(&dep->pending_list))  in dwc3_gadget_ep_should_continue()
3552 	req = next_request(&dep->started_list);  in dwc3_gadget_ep_should_continue()
3562 	dep->frame_number = event->parameters;  in dwc3_gadget_endpoint_frame_from_event()
3568 	struct dwc3		*dwc = dep->dwc;  in dwc3_gadget_endpoint_trbs_complete()
3573 	if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)  in dwc3_gadget_endpoint_trbs_complete()
3576 	if (!dep->endpoint.desc)  in dwc3_gadget_endpoint_trbs_complete()
3579 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&  in dwc3_gadget_endpoint_trbs_complete()
3580 		list_empty(&dep->started_list) &&  in dwc3_gadget_endpoint_trbs_complete()
3581 		(list_empty(&dep->pending_list) || status == -EXDEV))  in dwc3_gadget_endpoint_trbs_complete()
3589 	 * WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.  in dwc3_gadget_endpoint_trbs_complete()
3597 			dep = dwc->eps[i];  in dwc3_gadget_endpoint_trbs_complete()
3599 			if (!(dep->flags & DWC3_EP_ENABLED))  in dwc3_gadget_endpoint_trbs_complete()
3602 			if (!list_empty(&dep->started_list))  in dwc3_gadget_endpoint_trbs_complete()
3606 		reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_endpoint_trbs_complete()
3607 		reg |= dwc->u1u2;  in dwc3_gadget_endpoint_trbs_complete()
3608 		dwc3_writel(dwc->regs, DWC3_DCTL, reg);  in dwc3_gadget_endpoint_trbs_complete()
3610 		dwc->u1u2 = 0;  in dwc3_gadget_endpoint_trbs_complete()
3621 	if (!dep->endpoint.desc)  in dwc3_gadget_endpoint_transfer_in_progress()
3624 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc))  in dwc3_gadget_endpoint_transfer_in_progress()
3627 	if (event->status & DEPEVT_STATUS_BUSERR)  in dwc3_gadget_endpoint_transfer_in_progress()
3628 		status = -ECONNRESET;  in dwc3_gadget_endpoint_transfer_in_progress()
3630 	if (event->status & DEPEVT_STATUS_MISSED_ISOC)  in dwc3_gadget_endpoint_transfer_in_progress()
3631 		status = -EXDEV;  in dwc3_gadget_endpoint_transfer_in_progress()
3641 	dep->flags &= ~DWC3_EP_TRANSFER_STARTED;  in dwc3_gadget_endpoint_transfer_complete()
3643 	if (event->status & DEPEVT_STATUS_BUSERR)  in dwc3_gadget_endpoint_transfer_complete()
3644 		status = -ECONNRESET;  in dwc3_gadget_endpoint_transfer_complete()
3647 		dep->flags &= ~DWC3_EP_WAIT_TRANSFER_COMPLETE;  in dwc3_gadget_endpoint_transfer_complete()
3663 	if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)  in dwc3_gadget_endpoint_transfer_not_ready()
3672 	u8 cmd = DEPEVT_PARAMETER_CMD(event->parameters);  in dwc3_gadget_endpoint_command_complete()
3682 	if (dep->stream_capable)  in dwc3_gadget_endpoint_command_complete()
3683 		dep->flags |= DWC3_EP_IGNORE_NEXT_NOSTREAM;  in dwc3_gadget_endpoint_command_complete()
3685 	dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING;  in dwc3_gadget_endpoint_command_complete()
3686 	dep->flags &= ~DWC3_EP_TRANSFER_STARTED;  in dwc3_gadget_endpoint_command_complete()
3689 	if (dep->flags & DWC3_EP_PENDING_CLEAR_STALL) {  in dwc3_gadget_endpoint_command_complete()
3690 		struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_endpoint_command_complete()
3692 		dep->flags &= ~DWC3_EP_PENDING_CLEAR_STALL;  in dwc3_gadget_endpoint_command_complete()
3694 			struct usb_ep *ep0 = &dwc->eps[0]->endpoint;  in dwc3_gadget_endpoint_command_complete()
3696 			dev_err(dwc->dev, "failed to clear STALL on %s\n", dep->name);  in dwc3_gadget_endpoint_command_complete()
3697 			if (dwc->delayed_status)  in dwc3_gadget_endpoint_command_complete()
3702 		dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);  in dwc3_gadget_endpoint_command_complete()
3703 		if (dwc->clear_stall_protocol == dep->number)  in dwc3_gadget_endpoint_command_complete()
3707 	if ((dep->flags & DWC3_EP_DELAY_START) &&  in dwc3_gadget_endpoint_command_complete()
3708 	    !usb_endpoint_xfer_isoc(dep->endpoint.desc))  in dwc3_gadget_endpoint_command_complete()
3711 	dep->flags &= ~DWC3_EP_DELAY_START;  in dwc3_gadget_endpoint_command_complete()
3717 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_endpoint_stream_event()
3719 	if (event->status == DEPEVT_STREAMEVT_FOUND) {  in dwc3_gadget_endpoint_stream_event()
3720 		dep->flags |= DWC3_EP_FIRST_STREAM_PRIMED;  in dwc3_gadget_endpoint_stream_event()
3725 	switch (event->parameters) {  in dwc3_gadget_endpoint_stream_event()
3734 		if (dep->flags & DWC3_EP_FORCE_RESTART_STREAM) {  in dwc3_gadget_endpoint_stream_event()
3735 			if (dep->flags & DWC3_EP_FIRST_STREAM_PRIMED)  in dwc3_gadget_endpoint_stream_event()
3736 				dep->flags &= ~DWC3_EP_FORCE_RESTART_STREAM;  in dwc3_gadget_endpoint_stream_event()
3738 				dep->flags |= DWC3_EP_FIRST_STREAM_PRIMED;  in dwc3_gadget_endpoint_stream_event()
3743 		if ((dep->flags & DWC3_EP_IGNORE_NEXT_NOSTREAM) ||  in dwc3_gadget_endpoint_stream_event()
3744 		    !(dep->flags & DWC3_EP_FORCE_RESTART_STREAM) ||  in dwc3_gadget_endpoint_stream_event()
3745 		    (!DWC3_MST_CAPABLE(&dwc->hwparams) &&  in dwc3_gadget_endpoint_stream_event()
3746 		     !(dep->flags & DWC3_EP_WAIT_TRANSFER_COMPLETE)))  in dwc3_gadget_endpoint_stream_event()
3766 			dwc3_send_gadget_generic_command(dwc, cmd, dep->number);  in dwc3_gadget_endpoint_stream_event()
3768 			dep->flags |= DWC3_EP_DELAY_START;  in dwc3_gadget_endpoint_stream_event()
3776 	dep->flags &= ~DWC3_EP_IGNORE_NEXT_NOSTREAM;  in dwc3_gadget_endpoint_stream_event()
3783 	u8			epnum = event->endpoint_number;  in dwc3_endpoint_interrupt()
3785 	dep = dwc->eps[epnum];  in dwc3_endpoint_interrupt()
3787 	if (!(dep->flags & DWC3_EP_ENABLED)) {  in dwc3_endpoint_interrupt()
3788 		if ((epnum > 1) && !(dep->flags & DWC3_EP_TRANSFER_STARTED))  in dwc3_endpoint_interrupt()
3792 		if ((event->endpoint_event != DWC3_DEPEVT_EPCMDCMPLT) &&  in dwc3_endpoint_interrupt()
3793 			!(epnum <= 1 && event->endpoint_event == DWC3_DEPEVT_XFERCOMPLETE))  in dwc3_endpoint_interrupt()
3802 	switch (event->endpoint_event) {  in dwc3_endpoint_interrupt()
3821 		dev_err(dwc->dev, "unknown endpoint event %d\n", event->endpoint_event);  in dwc3_endpoint_interrupt()
3828 	if (dwc->async_callbacks && dwc->gadget_driver->disconnect) {  in dwc3_disconnect_gadget()
3829 		spin_unlock(&dwc->lock);  in dwc3_disconnect_gadget()
3830 		dwc->gadget_driver->disconnect(dwc->gadget);  in dwc3_disconnect_gadget()
3831 		spin_lock(&dwc->lock);  in dwc3_disconnect_gadget()
3837 	if (dwc->async_callbacks && dwc->gadget_driver->suspend) {  in dwc3_suspend_gadget()
3838 		spin_unlock(&dwc->lock);  in dwc3_suspend_gadget()
3839 		dwc->gadget_driver->suspend(dwc->gadget);  in dwc3_suspend_gadget()
3840 		spin_lock(&dwc->lock);  in dwc3_suspend_gadget()
3846 	if (dwc->async_callbacks && dwc->gadget_driver->resume) {  in dwc3_resume_gadget()
3847 		spin_unlock(&dwc->lock);  in dwc3_resume_gadget()
3848 		dwc->gadget_driver->resume(dwc->gadget);  in dwc3_resume_gadget()
3849 		spin_lock(&dwc->lock);  in dwc3_resume_gadget()
3855 	if (!dwc->gadget_driver)  in dwc3_reset_gadget()
3858 	if (dwc->async_callbacks && dwc->gadget->speed != USB_SPEED_UNKNOWN) {  in dwc3_reset_gadget()
3859 		spin_unlock(&dwc->lock);  in dwc3_reset_gadget()
3860 		usb_gadget_udc_reset(dwc->gadget, dwc->gadget_driver);  in dwc3_reset_gadget()
3861 		spin_lock(&dwc->lock);  in dwc3_reset_gadget()
3868 	struct dwc3 *dwc = dep->dwc;  in dwc3_stop_active_transfer()
3876 	if (dep->number <= 1 && dwc->ep0state != EP0_DATA_PHASE)  in dwc3_stop_active_transfer()
3879 	if (interrupt && (dep->flags & DWC3_EP_DELAY_STOP))  in dwc3_stop_active_transfer()
3882 	if (!(dep->flags & DWC3_EP_TRANSFER_STARTED) ||  in dwc3_stop_active_transfer()
3883 	    (dep->flags & DWC3_EP_END_TRANSFER_PENDING))  in dwc3_stop_active_transfer()
3893 	if (dwc->ep0state != EP0_SETUP_PHASE && !dwc->delayed_status) {  in dwc3_stop_active_transfer()
3894 		dep->flags |= DWC3_EP_DELAY_STOP;  in dwc3_stop_active_transfer()
3940 		dep = dwc->eps[epnum];  in dwc3_clear_stall_all_ep()
3944 		if (!(dep->flags & DWC3_EP_STALL))  in dwc3_clear_stall_all_ep()
3947 		dep->flags &= ~DWC3_EP_STALL;  in dwc3_clear_stall_all_ep()
3958 	dwc->suspended = false;  in dwc3_gadget_disconnect_interrupt()
3962 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_disconnect_interrupt()
3967 	dwc->connected = false;  in dwc3_gadget_disconnect_interrupt()
3971 	dwc->gadget->speed = USB_SPEED_UNKNOWN;  in dwc3_gadget_disconnect_interrupt()
3972 	dwc->setup_packet_pending = false;  in dwc3_gadget_disconnect_interrupt()
3973 	dwc->gadget->wakeup_armed = false;  in dwc3_gadget_disconnect_interrupt()
3975 	usb_gadget_set_state(dwc->gadget, USB_STATE_NOTATTACHED);  in dwc3_gadget_disconnect_interrupt()
3982 	 * interrupt to set dwc->connected to FALSE.  in dwc3_gadget_disconnect_interrupt()
3984 	pm_request_idle(dwc->dev);  in dwc3_gadget_disconnect_interrupt()
3991 	dwc->suspended = false;  in dwc3_gadget_reset_interrupt()
4000 	dwc->connected = false;  in dwc3_gadget_reset_interrupt()
4029 		if (dwc->setup_packet_pending)  in dwc3_gadget_reset_interrupt()
4044 	 * Section 4.1.2 Table 4-2, it states that during a USB reset, the SW  in dwc3_gadget_reset_interrupt()
4049 	dwc->connected = true;  in dwc3_gadget_reset_interrupt()
4051 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_reset_interrupt()
4054 	dwc->test_mode = false;  in dwc3_gadget_reset_interrupt()
4055 	dwc->gadget->wakeup_armed = false;  in dwc3_gadget_reset_interrupt()
4060 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in dwc3_gadget_reset_interrupt()
4062 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in dwc3_gadget_reset_interrupt()
4073 	if (!dwc->softconnect)  in dwc3_gadget_conndone_interrupt()
4076 	reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in dwc3_gadget_conndone_interrupt()
4078 	dwc->speed = speed;  in dwc3_gadget_conndone_interrupt()
4083 	dwc->gadget->ssp_rate = USB_SSP_GEN_UNKNOWN;  in dwc3_gadget_conndone_interrupt()
4097 		dwc->gadget->ep0->maxpacket = 512;  in dwc3_gadget_conndone_interrupt()
4098 		dwc->gadget->speed = USB_SPEED_SUPER_PLUS;  in dwc3_gadget_conndone_interrupt()
4101 			dwc->gadget->ssp_rate = USB_SSP_GEN_2x2;  in dwc3_gadget_conndone_interrupt()
4103 			dwc->gadget->ssp_rate = USB_SSP_GEN_2x1;  in dwc3_gadget_conndone_interrupt()
4123 		dwc->gadget->ep0->maxpacket = 512;  in dwc3_gadget_conndone_interrupt()
4124 		dwc->gadget->speed = USB_SPEED_SUPER;  in dwc3_gadget_conndone_interrupt()
4127 			dwc->gadget->speed = USB_SPEED_SUPER_PLUS;  in dwc3_gadget_conndone_interrupt()
4128 			dwc->gadget->ssp_rate = USB_SSP_GEN_1x2;  in dwc3_gadget_conndone_interrupt()
4133 		dwc->gadget->ep0->maxpacket = 64;  in dwc3_gadget_conndone_interrupt()
4134 		dwc->gadget->speed = USB_SPEED_HIGH;  in dwc3_gadget_conndone_interrupt()
4138 		dwc->gadget->ep0->maxpacket = 64;  in dwc3_gadget_conndone_interrupt()
4139 		dwc->gadget->speed = USB_SPEED_FULL;  in dwc3_gadget_conndone_interrupt()
4143 	dwc->eps[1]->endpoint.maxpacket = dwc->gadget->ep0->maxpacket;  in dwc3_gadget_conndone_interrupt()
4145 	/* Enable USB2 LPM Capability */  in dwc3_gadget_conndone_interrupt()
4148 	    !dwc->usb2_gadget_lpm_disable &&  in dwc3_gadget_conndone_interrupt()
4151 		reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in dwc3_gadget_conndone_interrupt()
4153 		dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in dwc3_gadget_conndone_interrupt()
4155 		reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_conndone_interrupt()
4158 		reg |= DWC3_DCTL_HIRD_THRES(dwc->hird_threshold |  in dwc3_gadget_conndone_interrupt()
4159 					    (dwc->is_utmi_l1_suspend << 4));  in dwc3_gadget_conndone_interrupt()
4162 		 * When dwc3 revisions >= 2.40a, LPM Erratum is enabled and  in dwc3_gadget_conndone_interrupt()
4164 		 * BESL value in the LPM token is less than or equal to LPM  in dwc3_gadget_conndone_interrupt()
4165 		 * NYET threshold.  in dwc3_gadget_conndone_interrupt()
4167 		WARN_ONCE(DWC3_VER_IS_PRIOR(DWC3, 240A) && dwc->has_lpm_erratum,  in dwc3_gadget_conndone_interrupt()
4168 				"LPM Erratum not available on dwc3 revisions < 2.40a\n");  in dwc3_gadget_conndone_interrupt()
4170 		if (dwc->has_lpm_erratum && !DWC3_VER_IS_PRIOR(DWC3, 240A))  in dwc3_gadget_conndone_interrupt()
4171 			reg |= DWC3_DCTL_NYET_THRES(dwc->lpm_nyet_threshold);  in dwc3_gadget_conndone_interrupt()
4175 		if (dwc->usb2_gadget_lpm_disable) {  in dwc3_gadget_conndone_interrupt()
4176 			reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in dwc3_gadget_conndone_interrupt()
4178 			dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in dwc3_gadget_conndone_interrupt()
4181 		reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_conndone_interrupt()
4186 	dep = dwc->eps[0];  in dwc3_gadget_conndone_interrupt()
4189 		dev_err(dwc->dev, "failed to enable %s\n", dep->name);  in dwc3_gadget_conndone_interrupt()
4193 	dep = dwc->eps[1];  in dwc3_gadget_conndone_interrupt()
4196 		dev_err(dwc->dev, "failed to enable %s\n", dep->name);  in dwc3_gadget_conndone_interrupt()
4211 	dwc->suspended = false;  in dwc3_gadget_wakeup_interrupt()
4218 	if (dwc->async_callbacks && dwc->gadget_driver->resume) {  in dwc3_gadget_wakeup_interrupt()
4219 		spin_unlock(&dwc->lock);  in dwc3_gadget_wakeup_interrupt()
4220 		dwc->gadget_driver->resume(dwc->gadget);  in dwc3_gadget_wakeup_interrupt()
4221 		spin_lock(&dwc->lock);  in dwc3_gadget_wakeup_interrupt()
4224 	dwc->link_state = evtinfo & DWC3_LINK_STATE_MASK;  in dwc3_gadget_wakeup_interrupt()
4236 	 * host-initiated U3 exit.  in dwc3_gadget_linksts_change_interrupt()
4247 	 * STAR#9000570034 RTL: SS Resume event generated in non-Hibernation  in dwc3_gadget_linksts_change_interrupt()
4250 	pwropt = DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1);  in dwc3_gadget_linksts_change_interrupt()
4253 		if ((dwc->link_state == DWC3_LINK_STATE_U3) &&  in dwc3_gadget_linksts_change_interrupt()
4274 	 * STAR#9000446952: RTL: Device SS : if U1/U2 ->U0 takes >128us  in dwc3_gadget_linksts_change_interrupt()
4282 			switch (dwc->link_state) {  in dwc3_gadget_linksts_change_interrupt()
4285 				reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_linksts_change_interrupt()
4291 				if (!dwc->u1u2)  in dwc3_gadget_linksts_change_interrupt()
4292 					dwc->u1u2 = reg & u1u2;  in dwc3_gadget_linksts_change_interrupt()
4307 		if (dwc->gadget->wakeup_armed) {  in dwc3_gadget_linksts_change_interrupt()
4310 			dwc->suspended = false;  in dwc3_gadget_linksts_change_interrupt()
4314 		if (dwc->speed == USB_SPEED_SUPER)  in dwc3_gadget_linksts_change_interrupt()
4329 	dwc->link_state = next;  in dwc3_gadget_linksts_change_interrupt()
4337 	if (!dwc->suspended && next == DWC3_LINK_STATE_U3) {  in dwc3_gadget_suspend_interrupt()
4338 		dwc->suspended = true;  in dwc3_gadget_suspend_interrupt()
4342 	dwc->link_state = next;  in dwc3_gadget_suspend_interrupt()
4348 	switch (event->type) {  in dwc3_gadget_interrupt()
4359 		dwc3_gadget_wakeup_interrupt(dwc, event->event_info);  in dwc3_gadget_interrupt()
4362 		dev_WARN_ONCE(dwc->dev, true, "unexpected hibernation event\n");  in dwc3_gadget_interrupt()
4365 		dwc3_gadget_linksts_change_interrupt(dwc, event->event_info);  in dwc3_gadget_interrupt()
4370 			dwc3_gadget_suspend_interrupt(dwc, event->event_info);  in dwc3_gadget_interrupt()
4378 		dev_WARN(dwc->dev, "UNKNOWN IRQ %d\n", event->type);  in dwc3_gadget_interrupt()
4385 	trace_dwc3_event(event->raw, dwc);  in dwc3_process_event_entry()
4387 	if (!event->type.is_devspec)  in dwc3_process_event_entry()
4388 		dwc3_endpoint_interrupt(dwc, &event->depevt);  in dwc3_process_event_entry()
4389 	else if (event->type.type == DWC3_EVENT_TYPE_DEV)  in dwc3_process_event_entry()
4390 		dwc3_gadget_interrupt(dwc, &event->devt);  in dwc3_process_event_entry()
4392 		dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw);  in dwc3_process_event_entry()
4397 	struct dwc3 *dwc = evt->dwc;  in dwc3_process_event_buf()
4401 	left = evt->count;  in dwc3_process_event_buf()
4403 	if (!(evt->flags & DWC3_EVENT_PENDING))  in dwc3_process_event_buf()
4409 		event.raw = *(u32 *) (evt->cache + evt->lpos);  in dwc3_process_event_buf()
4422 		evt->lpos = (evt->lpos + 4) % evt->length;  in dwc3_process_event_buf()
4423 		left -= 4;  in dwc3_process_event_buf()
4426 	evt->count = 0;  in dwc3_process_event_buf()
4430 	dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0),  in dwc3_process_event_buf()
4431 		    DWC3_GEVNTSIZ_SIZE(evt->length));  in dwc3_process_event_buf()
4433 	if (dwc->imod_interval) {  in dwc3_process_event_buf()
4434 		dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), DWC3_GEVNTCOUNT_EHB);  in dwc3_process_event_buf()
4435 		dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), dwc->imod_interval);  in dwc3_process_event_buf()
4439 	evt->flags &= ~DWC3_EVENT_PENDING;  in dwc3_process_event_buf()
4447 	struct dwc3 *dwc = evt->dwc;  in dwc3_thread_interrupt()
4452 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_thread_interrupt()
4454 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_thread_interrupt()
4462 	struct dwc3 *dwc = evt->dwc;  in dwc3_check_event_buf()
4466 	if (pm_runtime_suspended(dwc->dev)) {  in dwc3_check_event_buf()
4467 		dwc->pending_events = true;  in dwc3_check_event_buf()
4473 		pm_runtime_get(dwc->dev);  in dwc3_check_event_buf()
4474 		disable_irq_nosync(dwc->irq_gadget);  in dwc3_check_event_buf()
4479 	 * With PCIe legacy interrupt, test shows that top-half irq handler can  in dwc3_check_event_buf()
4480 	 * be called again after HW interrupt deassertion. Check if bottom-half  in dwc3_check_event_buf()
4484 	if (evt->flags & DWC3_EVENT_PENDING)  in dwc3_check_event_buf()
4487 	count = dwc3_readl(dwc->regs, DWC3_GEVNTCOUNT(0));  in dwc3_check_event_buf()
4492 	evt->count = count;  in dwc3_check_event_buf()
4493 	evt->flags |= DWC3_EVENT_PENDING;  in dwc3_check_event_buf()
4496 	dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0),  in dwc3_check_event_buf()
4497 		    DWC3_GEVNTSIZ_INTMASK | DWC3_GEVNTSIZ_SIZE(evt->length));  in dwc3_check_event_buf()
4499 	amount = min(count, evt->length - evt->lpos);  in dwc3_check_event_buf()
4500 	memcpy(evt->cache + evt->lpos, evt->buf + evt->lpos, amount);  in dwc3_check_event_buf()
4503 		memcpy(evt->cache, evt->buf, count - amount);  in dwc3_check_event_buf()
4505 	dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), count);  in dwc3_check_event_buf()
4519 	struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);  in dwc3_gadget_get_irq()
4526 	if (irq == -EPROBE_DEFER)  in dwc3_gadget_get_irq()
4533 	if (irq == -EPROBE_DEFER)  in dwc3_gadget_get_irq()
4550  * dwc3_gadget_init - initializes gadget related registers
4567 	dwc->irq_gadget = irq;  in dwc3_gadget_init()
4569 	dwc->ep0_trb = dma_alloc_coherent(dwc->sysdev,  in dwc3_gadget_init()
4570 					  sizeof(*dwc->ep0_trb) * 2,  in dwc3_gadget_init()
4571 					  &dwc->ep0_trb_addr, GFP_KERNEL);  in dwc3_gadget_init()
4572 	if (!dwc->ep0_trb) {  in dwc3_gadget_init()
4573 		dev_err(dwc->dev, "failed to allocate ep0 trb\n");  in dwc3_gadget_init()
4574 		ret = -ENOMEM;  in dwc3_gadget_init()
4578 	dwc->setup_buf = kzalloc(DWC3_EP0_SETUP_SIZE, GFP_KERNEL);  in dwc3_gadget_init()
4579 	if (!dwc->setup_buf) {  in dwc3_gadget_init()
4580 		ret = -ENOMEM;  in dwc3_gadget_init()
4584 	dwc->bounce = dma_alloc_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE,  in dwc3_gadget_init()
4585 			&dwc->bounce_addr, GFP_KERNEL);  in dwc3_gadget_init()
4586 	if (!dwc->bounce) {  in dwc3_gadget_init()
4587 		ret = -ENOMEM;  in dwc3_gadget_init()
4591 	init_completion(&dwc->ep0_in_setup);  in dwc3_gadget_init()
4592 	dwc->gadget = kzalloc(sizeof(struct usb_gadget), GFP_KERNEL);  in dwc3_gadget_init()
4593 	if (!dwc->gadget) {  in dwc3_gadget_init()
4594 		ret = -ENOMEM;  in dwc3_gadget_init()
4599 	usb_initialize_gadget(dwc->dev, dwc->gadget, dwc_gadget_release);  in dwc3_gadget_init()
4600 	dev				= &dwc->gadget->dev;  in dwc3_gadget_init()
4601 	dev->platform_data		= dwc;  in dwc3_gadget_init()
4602 	dwc->gadget->ops		= &dwc3_gadget_ops;  in dwc3_gadget_init()
4603 	dwc->gadget->speed		= USB_SPEED_UNKNOWN;  in dwc3_gadget_init()
4604 	dwc->gadget->ssp_rate		= USB_SSP_GEN_UNKNOWN;  in dwc3_gadget_init()
4605 	dwc->gadget->sg_supported	= true;  in dwc3_gadget_init()
4606 	dwc->gadget->name		= "dwc3-gadget";  in dwc3_gadget_init()
4607 	dwc->gadget->lpm_capable	= !dwc->usb2_gadget_lpm_disable;  in dwc3_gadget_init()
4608 	dwc->gadget->wakeup_capable	= true;  in dwc3_gadget_init()
4624 	 * composite.c that we are USB 2.0 + LPM ECN.  in dwc3_gadget_init()
4627 	    !dwc->dis_metastability_quirk)  in dwc3_gadget_init()
4628 		dev_info(dwc->dev, "changing max_speed on rev %08x\n",  in dwc3_gadget_init()
4629 				dwc->revision);  in dwc3_gadget_init()
4631 	dwc->gadget->max_speed		= dwc->maximum_speed;  in dwc3_gadget_init()
4632 	dwc->gadget->max_ssp_rate	= dwc->max_ssp_rate;  in dwc3_gadget_init()
4639 	ret = dwc3_gadget_init_endpoints(dwc, dwc->num_eps);  in dwc3_gadget_init()
4643 	ret = usb_add_gadget(dwc->gadget);  in dwc3_gadget_init()
4645 		dev_err(dwc->dev, "failed to add gadget\n");  in dwc3_gadget_init()
4649 	if (DWC3_IP_IS(DWC32) && dwc->maximum_speed == USB_SPEED_SUPER_PLUS)  in dwc3_gadget_init()
4650 		dwc3_gadget_set_ssp_rate(dwc->gadget, dwc->max_ssp_rate);  in dwc3_gadget_init()
4652 		dwc3_gadget_set_speed(dwc->gadget, dwc->maximum_speed);  in dwc3_gadget_init()
4655 	if (dwc->sys_wakeup)  in dwc3_gadget_init()
4656 		device_wakeup_disable(dwc->sysdev);  in dwc3_gadget_init()
4663 	usb_put_gadget(dwc->gadget);  in dwc3_gadget_init()
4664 	dwc->gadget = NULL;  in dwc3_gadget_init()
4666 	dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce,  in dwc3_gadget_init()
4667 			dwc->bounce_addr);  in dwc3_gadget_init()
4670 	kfree(dwc->setup_buf);  in dwc3_gadget_init()
4673 	dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2,  in dwc3_gadget_init()
4674 			dwc->ep0_trb, dwc->ep0_trb_addr);  in dwc3_gadget_init()
4680 /* -------------------------------------------------------------------------- */
4684 	if (!dwc->gadget)  in dwc3_gadget_exit()
4688 	usb_del_gadget(dwc->gadget);  in dwc3_gadget_exit()
4690 	usb_put_gadget(dwc->gadget);  in dwc3_gadget_exit()
4691 	dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce,  in dwc3_gadget_exit()
4692 			  dwc->bounce_addr);  in dwc3_gadget_exit()
4693 	kfree(dwc->setup_buf);  in dwc3_gadget_exit()
4694 	dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2,  in dwc3_gadget_exit()
4695 			  dwc->ep0_trb, dwc->ep0_trb_addr);  in dwc3_gadget_exit()
4707 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_suspend()
4708 	if (dwc->gadget_driver)  in dwc3_gadget_suspend()
4710 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_suspend()
4720 	if (dwc->softconnect)  in dwc3_gadget_suspend()
4728 	if (!dwc->gadget_driver || !dwc->softconnect)  in dwc3_gadget_resume()