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->num_trbs = 0;  in dwc3_gadget_del_and_unmap_request()
202 	if (req->request.status == -EINPROGRESS)  in dwc3_gadget_del_and_unmap_request()
203 		req->request.status = status;  in dwc3_gadget_del_and_unmap_request()
205 	if (req->trb)  in dwc3_gadget_del_and_unmap_request()
206 		usb_gadget_unmap_request_by_dev(dwc->sysdev,  in dwc3_gadget_del_and_unmap_request()
207 				&req->request, req->direction);  in dwc3_gadget_del_and_unmap_request()
209 	req->trb = NULL;  in dwc3_gadget_del_and_unmap_request()
212 	if (dep->number > 1)  in dwc3_gadget_del_and_unmap_request()
213 		pm_runtime_put(dwc->dev);  in dwc3_gadget_del_and_unmap_request()
217  * dwc3_gadget_giveback - call struct usb_request's ->complete callback
223  * function will unmap @req and call its ->complete() callback to notify upper
224  * layers that it has completed.
229 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_giveback()
232 	req->status = DWC3_REQUEST_STATUS_COMPLETED;  in dwc3_gadget_giveback()
234 	spin_unlock(&dwc->lock);  in dwc3_gadget_giveback()
235 	usb_gadget_giveback_request(&dep->endpoint, &req->request);  in dwc3_gadget_giveback()
236 	spin_lock(&dwc->lock);  in dwc3_gadget_giveback()
240  * dwc3_send_gadget_generic_command - issue a generic command for the controller
256 	dwc3_writel(dwc->regs, DWC3_DGCMDPAR, param);  in dwc3_send_gadget_generic_command()
257 	dwc3_writel(dwc->regs, DWC3_DGCMD, cmd | DWC3_DGCMD_CMDACT);  in dwc3_send_gadget_generic_command()
260 		reg = dwc3_readl(dwc->regs, DWC3_DGCMD);  in dwc3_send_gadget_generic_command()
264 				ret = -EINVAL;  in dwc3_send_gadget_generic_command()
267 	} while (--timeout);  in dwc3_send_gadget_generic_command()
270 		ret = -ETIMEDOUT;  in dwc3_send_gadget_generic_command()
271 		status = -ETIMEDOUT;  in dwc3_send_gadget_generic_command()
282  * dwc3_send_gadget_ep_cmd - issue an endpoint command
310 	const struct usb_endpoint_descriptor *desc = dep->endpoint.desc;  in dwc3_send_gadget_ep_cmd()
311 	struct dwc3		*dwc = dep->dwc;  in dwc3_send_gadget_ep_cmd()
317 	int			ret = -EINVAL;  in dwc3_send_gadget_ep_cmd()
329 	if (dwc->gadget->speed <= USB_SPEED_HIGH ||  in dwc3_send_gadget_ep_cmd()
331 		reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));  in dwc3_send_gadget_ep_cmd()
343 			dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);  in dwc3_send_gadget_ep_cmd()
353 		dwc3_writel(dep->regs, DWC3_DEPCMDPAR0, params->param0);  in dwc3_send_gadget_ep_cmd()
354 		dwc3_writel(dep->regs, DWC3_DEPCMDPAR1, params->param1);  in dwc3_send_gadget_ep_cmd()
355 		dwc3_writel(dep->regs, DWC3_DEPCMDPAR2, params->param2);  in dwc3_send_gadget_ep_cmd()
379 	dwc3_writel(dep->regs, DWC3_DEPCMD, cmd);  in dwc3_send_gadget_ep_cmd()
389 		reg = dwc3_readl(dep->regs, DWC3_DEPCMD);  in dwc3_send_gadget_ep_cmd()
398 				dev_WARN(dwc->dev, "No resource for %s\n",  in dwc3_send_gadget_ep_cmd()
399 					 dep->name);  in dwc3_send_gadget_ep_cmd()
400 				ret = -EINVAL;  in dwc3_send_gadget_ep_cmd()
406 				 * future interval time has already passed when  in dwc3_send_gadget_ep_cmd()
410 				 * Instead of always returning -EINVAL, let's  in dwc3_send_gadget_ep_cmd()
412 				 * the case by returning -EAGAIN.  in dwc3_send_gadget_ep_cmd()
414 				ret = -EAGAIN;  in dwc3_send_gadget_ep_cmd()
417 				dev_WARN(dwc->dev, "UNKNOWN cmd status\n");  in dwc3_send_gadget_ep_cmd()
422 	} while (--timeout);  in dwc3_send_gadget_ep_cmd()
425 		ret = -ETIMEDOUT;  in dwc3_send_gadget_ep_cmd()
426 		cmd_status = -ETIMEDOUT;  in dwc3_send_gadget_ep_cmd()
434 			dep->flags |= DWC3_EP_TRANSFER_STARTED;  in dwc3_send_gadget_ep_cmd()
436 		if (ret != -ETIMEDOUT)  in dwc3_send_gadget_ep_cmd()
445 		reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));  in dwc3_send_gadget_ep_cmd()
447 		dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);  in dwc3_send_gadget_ep_cmd()
455 	struct dwc3 *dwc = dep->dwc;  in dwc3_send_clear_stall_ep_cmd()
463 	 * some (non-compliant) hosts may not send ACK TPs for pending  in dwc3_send_clear_stall_ep_cmd()
467 	if (dep->direction &&  in dwc3_send_clear_stall_ep_cmd()
469 	    (dwc->gadget->speed >= USB_SPEED_SUPER))  in dwc3_send_clear_stall_ep_cmd()
480 	u32		offset = (char *) trb - (char *) dep->trb_pool;  in dwc3_trb_dma_offset()
482 	return dep->trb_pool_dma + offset;  in dwc3_trb_dma_offset()
487 	struct dwc3		*dwc = dep->dwc;  in dwc3_alloc_trb_pool()
489 	if (dep->trb_pool)  in dwc3_alloc_trb_pool()
492 	dep->trb_pool = dma_alloc_coherent(dwc->sysdev,  in dwc3_alloc_trb_pool()
494 			&dep->trb_pool_dma, GFP_KERNEL);  in dwc3_alloc_trb_pool()
495 	if (!dep->trb_pool) {  in dwc3_alloc_trb_pool()
496 		dev_err(dep->dwc->dev, "failed to allocate trb pool for %s\n",  in dwc3_alloc_trb_pool()
497 				dep->name);  in dwc3_alloc_trb_pool()
498 		return -ENOMEM;  in dwc3_alloc_trb_pool()
506 	struct dwc3		*dwc = dep->dwc;  in dwc3_free_trb_pool()
508 	dma_free_coherent(dwc->sysdev, sizeof(struct dwc3_trb) * DWC3_TRB_NUM,  in dwc3_free_trb_pool()
509 			dep->trb_pool, dep->trb_pool_dma);  in dwc3_free_trb_pool()
511 	dep->trb_pool = NULL;  in dwc3_free_trb_pool()
512 	dep->trb_pool_dma = 0;  in dwc3_free_trb_pool()
520 	if (dep->flags & DWC3_EP_RESOURCE_ALLOCATED)  in dwc3_gadget_set_xfer_resource()
532 	dep->flags |= DWC3_EP_RESOURCE_ALLOCATED;  in dwc3_gadget_set_xfer_resource()
537  * dwc3_gadget_start_config - reset endpoint resources
542  * part of the power-on/soft-reset initialization.
544  * Set resource_index=2 to reset only non-control endpoints' resources. Do this
555 		return -EINVAL;  in dwc3_gadget_start_config()
561 	ret = dwc3_send_gadget_ep_cmd(dwc->eps[0], cmd, &params);  in dwc3_gadget_start_config()
566 	for (i = resource_index; i < dwc->num_eps && dwc->eps[i]; i++)  in dwc3_gadget_start_config()
567 		dwc->eps[i]->flags &= ~DWC3_EP_RESOURCE_ALLOCATED;  in dwc3_gadget_start_config()
577 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_set_ep_config()
579 	comp_desc = dep->endpoint.comp_desc;  in dwc3_gadget_set_ep_config()
580 	desc = dep->endpoint.desc;  in dwc3_gadget_set_ep_config()
588 	if (dwc->gadget->speed >= USB_SPEED_SUPER) {  in dwc3_gadget_set_ep_config()
589 		u32 burst = dep->endpoint.maxburst;  in dwc3_gadget_set_ep_config()
591 		params.param0 |= DWC3_DEPCFG_BURST_SIZE(burst - 1);  in dwc3_gadget_set_ep_config()
596 		params.param2 |= dep->saved_state;  in dwc3_gadget_set_ep_config()
601 	if (dep->number <= 1 || usb_endpoint_xfer_isoc(desc))  in dwc3_gadget_set_ep_config()
608 		dep->stream_capable = true;  in dwc3_gadget_set_ep_config()
620 	params.param1 |= DWC3_DEPCFG_EP_NUMBER(dep->number);  in dwc3_gadget_set_ep_config()
626 	if (dep->direction)  in dwc3_gadget_set_ep_config()
627 		params.param0 |= DWC3_DEPCFG_FIFO_NUMBER(dep->number >> 1);  in dwc3_gadget_set_ep_config()
629 	if (desc->bInterval) {  in dwc3_gadget_set_ep_config()
640 		bInterval_m1 = min_t(u8, desc->bInterval - 1, 13);  in dwc3_gadget_set_ep_config()
643 		    dwc->gadget->speed == USB_SPEED_FULL)  in dwc3_gadget_set_ep_config()
644 			dep->interval = desc->bInterval;  in dwc3_gadget_set_ep_config()
646 			dep->interval = 1 << (desc->bInterval - 1);  in dwc3_gadget_set_ep_config()
655  * dwc3_gadget_calc_tx_fifo_size - calculates the txfifo size value
690  * dwc3_gadget_calc_ram_depth - calculates the ram depth for txfifo
700 	is_single_port_ram = DWC3_SPRAM_TYPE(dwc->hwparams.hwparams1);  in dwc3_gadget_calc_ram_depth()
706 	ram_depth = is_single_port_ram ? DWC3_RAM0_DEPTH(dwc->hwparams.hwparams6) :  in dwc3_gadget_calc_ram_depth()
707 			DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7);  in dwc3_gadget_calc_ram_depth()
712 	 * at a non-zero address.  in dwc3_gadget_calc_ram_depth()
717 		/* Check if TXFIFOs start at non-zero addr */  in dwc3_gadget_calc_ram_depth()
718 		reg = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0));  in dwc3_gadget_calc_ram_depth()
721 		ram_depth -= (fifo_0_start >> 16);  in dwc3_gadget_calc_ram_depth()
728  * dwc3_gadget_clear_tx_fifos - Clears txfifo allocation
741 	if (!dwc->do_fifo_resize)  in dwc3_gadget_clear_tx_fifos()
745 	dep = dwc->eps[1];  in dwc3_gadget_clear_tx_fifos()
746 	size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0));  in dwc3_gadget_clear_tx_fifos()
752 	dwc->last_fifo_depth = fifo_depth;  in dwc3_gadget_clear_tx_fifos()
754 	for (num = 3; num < min_t(int, dwc->num_eps, DWC3_ENDPOINTS_NUM);  in dwc3_gadget_clear_tx_fifos()
756 		dep = dwc->eps[num];  in dwc3_gadget_clear_tx_fifos()
759 			dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1)) &  in dwc3_gadget_clear_tx_fifos()
762 		dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1), size);  in dwc3_gadget_clear_tx_fifos()
763 		dep->flags &= ~DWC3_EP_TXFIFO_RESIZED;  in dwc3_gadget_clear_tx_fifos()
765 	dwc->num_ep_resized = 0;  in dwc3_gadget_clear_tx_fifos()
769  * dwc3_gadget_resize_tx_fifos - reallocate fifo spaces for current use-case
777  * on the configured size for RAM1 - which contains TxFifo -,
791 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_resize_tx_fifos()
802 	if (!dwc->do_fifo_resize)  in dwc3_gadget_resize_tx_fifos()
806 	if (!usb_endpoint_dir_in(dep->endpoint.desc) || dep->number <= 1)  in dwc3_gadget_resize_tx_fifos()
810 	if (dep->flags & DWC3_EP_TXFIFO_RESIZED)  in dwc3_gadget_resize_tx_fifos()
815 	switch (dwc->gadget->speed) {  in dwc3_gadget_resize_tx_fifos()
818 		if (usb_endpoint_xfer_bulk(dep->endpoint.desc) ||  in dwc3_gadget_resize_tx_fifos()
819 		    usb_endpoint_xfer_isoc(dep->endpoint.desc))  in dwc3_gadget_resize_tx_fifos()
821 					  dep->endpoint.maxburst,  in dwc3_gadget_resize_tx_fifos()
822 					  dwc->tx_fifo_resize_max_num);  in dwc3_gadget_resize_tx_fifos()
825 		if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {  in dwc3_gadget_resize_tx_fifos()
827 					  usb_endpoint_maxp_mult(dep->endpoint.desc) + 1,  in dwc3_gadget_resize_tx_fifos()
828 					  dwc->tx_fifo_resize_max_num);  in dwc3_gadget_resize_tx_fifos()
833 		if (usb_endpoint_xfer_bulk(dep->endpoint.desc))  in dwc3_gadget_resize_tx_fifos()
844 	num_in_ep = dwc->max_cfg_eps;  in dwc3_gadget_resize_tx_fifos()
845 	num_in_ep -= dwc->num_ep_resized;  in dwc3_gadget_resize_tx_fifos()
849 	remaining = ram_depth - min_depth - dwc->last_fifo_depth;  in dwc3_gadget_resize_tx_fifos()
856 	fifo_size = (num_fifos - 1) * fifo;  in dwc3_gadget_resize_tx_fifos()
864 	/* Check if TXFIFOs start at non-zero addr */  in dwc3_gadget_resize_tx_fifos()
865 	tmp = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(0));  in dwc3_gadget_resize_tx_fifos()
868 	fifo_size |= (fifo_0_start + (dwc->last_fifo_depth << 16));  in dwc3_gadget_resize_tx_fifos()
870 		dwc->last_fifo_depth += DWC3_GTXFIFOSIZ_TXFDEP(fifo_size);  in dwc3_gadget_resize_tx_fifos()
872 		dwc->last_fifo_depth += DWC31_GTXFIFOSIZ_TXFDEP(fifo_size);  in dwc3_gadget_resize_tx_fifos()
875 	if (dwc->last_fifo_depth >= ram_depth) {  in dwc3_gadget_resize_tx_fifos()
876 		dev_err(dwc->dev, "Fifosize(%d) > RAM size(%d) %s depth:%d\n",  in dwc3_gadget_resize_tx_fifos()
877 			dwc->last_fifo_depth, ram_depth,  in dwc3_gadget_resize_tx_fifos()
878 			dep->endpoint.name, fifo_size);  in dwc3_gadget_resize_tx_fifos()
884 		dwc->last_fifo_depth -= fifo_size;  in dwc3_gadget_resize_tx_fifos()
885 		return -ENOMEM;  in dwc3_gadget_resize_tx_fifos()
888 	dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(dep->number >> 1), fifo_size);  in dwc3_gadget_resize_tx_fifos()
889 	dep->flags |= DWC3_EP_TXFIFO_RESIZED;  in dwc3_gadget_resize_tx_fifos()
890 	dwc->num_ep_resized++;  in dwc3_gadget_resize_tx_fifos()
896  * __dwc3_gadget_ep_enable - initializes a hw endpoint
905 	const struct usb_endpoint_descriptor *desc = dep->endpoint.desc;  in __dwc3_gadget_ep_enable()
906 	struct dwc3		*dwc = dep->dwc;  in __dwc3_gadget_ep_enable()
911 	if (!(dep->flags & DWC3_EP_ENABLED)) {  in __dwc3_gadget_ep_enable()
921 	if (!(dep->flags & DWC3_EP_RESOURCE_ALLOCATED)) {  in __dwc3_gadget_ep_enable()
927 	if (!(dep->flags & DWC3_EP_ENABLED)) {  in __dwc3_gadget_ep_enable()
931 		dep->type = usb_endpoint_type(desc);  in __dwc3_gadget_ep_enable()
932 		dep->flags |= DWC3_EP_ENABLED;  in __dwc3_gadget_ep_enable()
934 		reg = dwc3_readl(dwc->regs, DWC3_DALEPENA);  in __dwc3_gadget_ep_enable()
935 		reg |= DWC3_DALEPENA_EP(dep->number);  in __dwc3_gadget_ep_enable()
936 		dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);  in __dwc3_gadget_ep_enable()
938 		dep->trb_dequeue = 0;  in __dwc3_gadget_ep_enable()
939 		dep->trb_enqueue = 0;  in __dwc3_gadget_ep_enable()
945 		memset(dep->trb_pool, 0,  in __dwc3_gadget_ep_enable()
949 		trb_st_hw = &dep->trb_pool[0];  in __dwc3_gadget_ep_enable()
951 		trb_link = &dep->trb_pool[DWC3_TRB_NUM - 1];  in __dwc3_gadget_ep_enable()
952 		trb_link->bpl = lower_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw));  in __dwc3_gadget_ep_enable()
953 		trb_link->bph = upper_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw));  in __dwc3_gadget_ep_enable()
954 		trb_link->ctrl |= DWC3_TRBCTL_LINK_TRB;  in __dwc3_gadget_ep_enable()
955 		trb_link->ctrl |= DWC3_TRB_CTRL_HWO;  in __dwc3_gadget_ep_enable()
959 	 * Issue StartTransfer here with no-op TRB so we can always rely on No  in __dwc3_gadget_ep_enable()
970 		trb = &dep->trb_pool[0];  in __dwc3_gadget_ep_enable()
982 		if (dep->stream_capable) {  in __dwc3_gadget_ep_enable()
989 			 * no-op TRB as normal, but end it immediately. As a  in __dwc3_gadget_ep_enable()
1006 			if (!dep->direction ||  in __dwc3_gadget_ep_enable()
1007 			    !(dwc->hwparams.hwparams9 &  in __dwc3_gadget_ep_enable()
1009 				dep->flags |= DWC3_EP_FORCE_RESTART_STREAM;  in __dwc3_gadget_ep_enable()
1026 	if (dep->flags & DWC3_EP_DELAY_STOP)  in dwc3_remove_requests()
1029 	/* - giveback all requests to gadget driver */  in dwc3_remove_requests()
1030 	while (!list_empty(&dep->started_list)) {  in dwc3_remove_requests()
1031 		req = next_request(&dep->started_list);  in dwc3_remove_requests()
1036 	while (!list_empty(&dep->pending_list)) {  in dwc3_remove_requests()
1037 		req = next_request(&dep->pending_list);  in dwc3_remove_requests()
1042 	while (!list_empty(&dep->cancelled_list)) {  in dwc3_remove_requests()
1043 		req = next_request(&dep->cancelled_list);  in dwc3_remove_requests()
1050  * __dwc3_gadget_ep_disable - disables a hw endpoint
1061 	struct dwc3		*dwc = dep->dwc;  in __dwc3_gadget_ep_disable()
1068 	if (dep->flags & DWC3_EP_STALL)  in __dwc3_gadget_ep_disable()
1071 	reg = dwc3_readl(dwc->regs, DWC3_DALEPENA);  in __dwc3_gadget_ep_disable()
1072 	reg &= ~DWC3_DALEPENA_EP(dep->number);  in __dwc3_gadget_ep_disable()
1073 	dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);  in __dwc3_gadget_ep_disable()
1075 	dwc3_remove_requests(dwc, dep, -ESHUTDOWN);  in __dwc3_gadget_ep_disable()
1077 	dep->stream_capable = false;  in __dwc3_gadget_ep_disable()
1078 	dep->type = 0;  in __dwc3_gadget_ep_disable()
1085 	if (dep->flags & DWC3_EP_DELAY_STOP)  in __dwc3_gadget_ep_disable()
1087 	dep->flags &= mask;  in __dwc3_gadget_ep_disable()
1089 	/* Clear out the ep descriptors for non-ep0 */  in __dwc3_gadget_ep_disable()
1090 	if (dep->number > 1) {  in __dwc3_gadget_ep_disable()
1091 		dep->endpoint.comp_desc = NULL;  in __dwc3_gadget_ep_disable()
1092 		dep->endpoint.desc = NULL;  in __dwc3_gadget_ep_disable()
1098 /* -------------------------------------------------------------------------- */
1103 	return -EINVAL;  in dwc3_gadget_ep0_enable()
1108 	return -EINVAL;  in dwc3_gadget_ep0_disable()
1111 /* -------------------------------------------------------------------------- */
1121 	if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) {  in dwc3_gadget_ep_enable()
1123 		return -EINVAL;  in dwc3_gadget_ep_enable()
1126 	if (!desc->wMaxPacketSize) {  in dwc3_gadget_ep_enable()
1128 		return -EINVAL;  in dwc3_gadget_ep_enable()
1132 	dwc = dep->dwc;  in dwc3_gadget_ep_enable()
1134 	if (dev_WARN_ONCE(dwc->dev, dep->flags & DWC3_EP_ENABLED,  in dwc3_gadget_ep_enable()
1136 					dep->name))  in dwc3_gadget_ep_enable()
1139 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_enable()
1141 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_enable()
1155 		return -EINVAL;  in dwc3_gadget_ep_disable()
1159 	dwc = dep->dwc;  in dwc3_gadget_ep_disable()
1161 	if (dev_WARN_ONCE(dwc->dev, !(dep->flags & DWC3_EP_ENABLED),  in dwc3_gadget_ep_disable()
1163 					dep->name))  in dwc3_gadget_ep_disable()
1166 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_disable()
1168 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_disable()
1183 	req->direction	= dep->direction;  in dwc3_gadget_ep_alloc_request()
1184 	req->epnum	= dep->number;  in dwc3_gadget_ep_alloc_request()
1185 	req->dep	= dep;  in dwc3_gadget_ep_alloc_request()
1186 	req->status	= DWC3_REQUEST_STATUS_UNKNOWN;  in dwc3_gadget_ep_alloc_request()
1190 	return &req->request;  in dwc3_gadget_ep_alloc_request()
1203  * dwc3_ep_prev_trb - returns the previous TRB in the ring
1216 		tmp = DWC3_TRB_NUM - 1;  in dwc3_ep_prev_trb()
1218 	return &dep->trb_pool[tmp - 1];  in dwc3_ep_prev_trb()
1227 	 * or empty. It's considered full when there are DWC3_TRB_NUM-1 of TRBs  in dwc3_calc_trbs_left()
1230 	if (dep->trb_enqueue == dep->trb_dequeue) {  in dwc3_calc_trbs_left()
1237 		req = next_request(&dep->started_list);  in dwc3_calc_trbs_left()
1238 		if (req && req->num_trbs)  in dwc3_calc_trbs_left()
1241 		return DWC3_TRB_NUM - 1;  in dwc3_calc_trbs_left()
1244 	trbs_left = dep->trb_dequeue - dep->trb_enqueue;  in dwc3_calc_trbs_left()
1245 	trbs_left &= (DWC3_TRB_NUM - 1);  in dwc3_calc_trbs_left()
1247 	if (dep->trb_dequeue < dep->trb_enqueue)  in dwc3_calc_trbs_left()
1248 		trbs_left--;  in dwc3_calc_trbs_left()
1254  * dwc3_prepare_one_trb - setup one TRB from one request
1270 	unsigned int		stream_id = req->request.stream_id;  in dwc3_prepare_one_trb()
1271 	unsigned int		short_not_ok = req->request.short_not_ok;  in dwc3_prepare_one_trb()
1272 	unsigned int		no_interrupt = req->request.no_interrupt;  in dwc3_prepare_one_trb()
1273 	unsigned int		is_last = req->request.is_last;  in dwc3_prepare_one_trb()
1274 	struct dwc3		*dwc = dep->dwc;  in dwc3_prepare_one_trb()
1275 	struct usb_gadget	*gadget = dwc->gadget;  in dwc3_prepare_one_trb()
1276 	enum usb_device_speed	speed = gadget->speed;  in dwc3_prepare_one_trb()
1279 		dma = dep->dwc->bounce_addr;  in dwc3_prepare_one_trb()
1280 	else if (req->request.num_sgs > 0)  in dwc3_prepare_one_trb()
1281 		dma = sg_dma_address(req->start_sg);  in dwc3_prepare_one_trb()
1283 		dma = req->request.dma;  in dwc3_prepare_one_trb()
1285 	trb = &dep->trb_pool[dep->trb_enqueue];  in dwc3_prepare_one_trb()
1287 	if (!req->trb) {  in dwc3_prepare_one_trb()
1289 		req->trb = trb;  in dwc3_prepare_one_trb()
1290 		req->trb_dma = dwc3_trb_dma_offset(dep, trb);  in dwc3_prepare_one_trb()
1293 	req->num_trbs++;  in dwc3_prepare_one_trb()
1295 	trb->size = DWC3_TRB_SIZE_LENGTH(trb_length);  in dwc3_prepare_one_trb()
1296 	trb->bpl = lower_32_bits(dma);  in dwc3_prepare_one_trb()
1297 	trb->bph = upper_32_bits(dma);  in dwc3_prepare_one_trb()
1299 	switch (usb_endpoint_type(dep->endpoint.desc)) {  in dwc3_prepare_one_trb()
1301 		trb->ctrl = DWC3_TRBCTL_CONTROL_SETUP;  in dwc3_prepare_one_trb()
1306 			trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;  in dwc3_prepare_one_trb()
1322 			 *	- DATA0  in dwc3_prepare_one_trb()
1325 			 *	- DATA1, DATA0  in dwc3_prepare_one_trb()
1328 			 *	- DATA2, DATA1, DATA0  in dwc3_prepare_one_trb()
1331 				struct usb_ep *ep = &dep->endpoint;  in dwc3_prepare_one_trb()
1333 				unsigned int maxp = usb_endpoint_maxp(ep->desc);  in dwc3_prepare_one_trb()
1335 				if (req->request.length <= (2 * maxp))  in dwc3_prepare_one_trb()
1336 					mult--;  in dwc3_prepare_one_trb()
1338 				if (req->request.length <= maxp)  in dwc3_prepare_one_trb()
1339 					mult--;  in dwc3_prepare_one_trb()
1341 				trb->size |= DWC3_TRB_SIZE_PCM1(mult);  in dwc3_prepare_one_trb()
1344 			trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS;  in dwc3_prepare_one_trb()
1348 			trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;  in dwc3_prepare_one_trb()
1353 		trb->ctrl = DWC3_TRBCTL_NORMAL;  in dwc3_prepare_one_trb()
1360 		dev_WARN(dwc->dev, "Unknown endpoint type %d\n",  in dwc3_prepare_one_trb()
1361 				usb_endpoint_type(dep->endpoint.desc));  in dwc3_prepare_one_trb()
1368 	if (usb_endpoint_dir_out(dep->endpoint.desc)) {  in dwc3_prepare_one_trb()
1369 		if (!dep->stream_capable)  in dwc3_prepare_one_trb()
1370 			trb->ctrl |= DWC3_TRB_CTRL_CSP;  in dwc3_prepare_one_trb()
1373 			trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;  in dwc3_prepare_one_trb()
1377 	if (dep->stream_capable && DWC3_MST_CAPABLE(&dwc->hwparams))  in dwc3_prepare_one_trb()
1378 		trb->ctrl |= DWC3_TRB_CTRL_CSP;  in dwc3_prepare_one_trb()
1381 		trb->ctrl |= DWC3_TRB_CTRL_IOC;  in dwc3_prepare_one_trb()
1384 		trb->ctrl |= DWC3_TRB_CTRL_CHN;  in dwc3_prepare_one_trb()
1385 	else if (dep->stream_capable && is_last &&  in dwc3_prepare_one_trb()
1386 		 !DWC3_MST_CAPABLE(&dwc->hwparams))  in dwc3_prepare_one_trb()
1387 		trb->ctrl |= DWC3_TRB_CTRL_LST;  in dwc3_prepare_one_trb()
1389 	if (usb_endpoint_xfer_bulk(dep->endpoint.desc) && dep->stream_capable)  in dwc3_prepare_one_trb()
1390 		trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(stream_id);  in dwc3_prepare_one_trb()
1400 	 * However there is a possibility of CPU re-ordering here which can cause  in dwc3_prepare_one_trb()
1402 	 * Add a write memory barrier to prevent CPU re-ordering.  in dwc3_prepare_one_trb()
1405 	trb->ctrl |= DWC3_TRB_CTRL_HWO;  in dwc3_prepare_one_trb()
1414 	unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc);  in dwc3_needs_extra_trb()
1415 	unsigned int rem = req->request.length % maxp;  in dwc3_needs_extra_trb()
1417 	if ((req->request.length && req->request.zero && !rem &&  in dwc3_needs_extra_trb()
1418 			!usb_endpoint_xfer_isoc(dep->endpoint.desc)) ||  in dwc3_needs_extra_trb()
1419 			(!req->direction && rem))  in dwc3_needs_extra_trb()
1426  * dwc3_prepare_last_sg - prepare TRBs for the last SG entry
1438 	unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc);  in dwc3_prepare_last_sg()
1439 	unsigned int rem = req->request.length % maxp;  in dwc3_prepare_last_sg()
1452 	if (req->direction || req->request.length)  in dwc3_prepare_last_sg()
1457 	if ((!req->direction && !req->request.length) || needs_extra_trb)  in dwc3_prepare_last_sg()
1459 				req->direction ? 0 : maxp - rem,  in dwc3_prepare_last_sg()
1468 	struct scatterlist *sg = req->start_sg;  in dwc3_prepare_trbs_sg()
1471 	unsigned int length = req->request.length;  in dwc3_prepare_trbs_sg()
1472 	unsigned int remaining = req->num_pending_sgs;  in dwc3_prepare_trbs_sg()
1473 	unsigned int num_queued_sgs = req->request.num_mapped_sgs - remaining;  in dwc3_prepare_trbs_sg()
1474 	unsigned int num_trbs = req->num_trbs;  in dwc3_prepare_trbs_sg()
1481 	for_each_sg(req->request.sg, s, num_queued_sgs, i)  in dwc3_prepare_trbs_sg()
1482 		length -= sg_dma_len(s);  in dwc3_prepare_trbs_sg()
1492 		length -= trb_length;  in dwc3_prepare_trbs_sg()
1501 		if ((i == remaining - 1) || !length)  in dwc3_prepare_trbs_sg()
1523 				list_for_each_entry(r, &dep->started_list, list) {  in dwc3_prepare_trbs_sg()
1524 					if (r != req && !r->request.no_interrupt)  in dwc3_prepare_trbs_sg()
1544 			req->start_sg = sg_next(s);  in dwc3_prepare_trbs_sg()
1546 		req->num_pending_sgs--;  in dwc3_prepare_trbs_sg()
1554 			req->num_pending_sgs = 0;  in dwc3_prepare_trbs_sg()
1562 	return req->num_trbs - num_trbs;  in dwc3_prepare_trbs_sg()
1568 	return dwc3_prepare_last_sg(dep, req, req->request.length, 0);  in dwc3_prepare_trbs_linear()
1572  * dwc3_prepare_trbs - setup TRBs from requests
1591 	 * around, so it has been waiting for more TRBs to be freed up.  in dwc3_prepare_trbs()
1598 	list_for_each_entry(req, &dep->started_list, list) {  in dwc3_prepare_trbs()
1599 		if (req->num_pending_sgs > 0) {  in dwc3_prepare_trbs()
1601 			if (!ret || req->num_pending_sgs)  in dwc3_prepare_trbs()
1613 		if (dep->stream_capable && req->request.is_last &&  in dwc3_prepare_trbs()
1614 		    !DWC3_MST_CAPABLE(&dep->dwc->hwparams))  in dwc3_prepare_trbs()
1618 	list_for_each_entry_safe(req, n, &dep->pending_list, list) {  in dwc3_prepare_trbs()
1619 		struct dwc3	*dwc = dep->dwc;  in dwc3_prepare_trbs()
1621 		ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request,  in dwc3_prepare_trbs()
1622 						    dep->direction);  in dwc3_prepare_trbs()
1626 		req->start_sg		= req->request.sg;  in dwc3_prepare_trbs()
1627 		req->num_pending_sgs	= req->request.num_mapped_sgs;  in dwc3_prepare_trbs()
1629 		if (req->num_pending_sgs > 0) {  in dwc3_prepare_trbs()
1631 			if (req->num_pending_sgs)  in dwc3_prepare_trbs()
1645 		if (dep->stream_capable && req->request.is_last &&  in dwc3_prepare_trbs()
1646 		    !DWC3_MST_CAPABLE(&dwc->hwparams))  in dwc3_prepare_trbs()
1672 	starting = !(dep->flags & DWC3_EP_TRANSFER_STARTED);  in __dwc3_gadget_kick_transfer()
1681 	req = next_request(&dep->started_list);  in __dwc3_gadget_kick_transfer()
1683 		dep->flags |= DWC3_EP_PENDING_REQUEST;  in __dwc3_gadget_kick_transfer()
1690 		params.param0 = upper_32_bits(req->trb_dma);  in __dwc3_gadget_kick_transfer()
1691 		params.param1 = lower_32_bits(req->trb_dma);  in __dwc3_gadget_kick_transfer()
1694 		if (dep->stream_capable)  in __dwc3_gadget_kick_transfer()
1695 			cmd |= DWC3_DEPCMD_PARAM(req->request.stream_id);  in __dwc3_gadget_kick_transfer()
1697 		if (usb_endpoint_xfer_isoc(dep->endpoint.desc))  in __dwc3_gadget_kick_transfer()
1698 			cmd |= DWC3_DEPCMD_PARAM(dep->frame_number);  in __dwc3_gadget_kick_transfer()
1701 			DWC3_DEPCMD_PARAM(dep->resource_index);  in __dwc3_gadget_kick_transfer()
1708 		if (ret == -EAGAIN)  in __dwc3_gadget_kick_transfer()
1713 		list_for_each_entry_safe(req, tmp, &dep->started_list, list)  in __dwc3_gadget_kick_transfer()
1717 		if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING))  in __dwc3_gadget_kick_transfer()
1723 	if (dep->stream_capable && req->request.is_last &&  in __dwc3_gadget_kick_transfer()
1724 	    !DWC3_MST_CAPABLE(&dep->dwc->hwparams))  in __dwc3_gadget_kick_transfer()
1725 		dep->flags |= DWC3_EP_WAIT_TRANSFER_COMPLETE;  in __dwc3_gadget_kick_transfer()
1734 	reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in __dwc3_gadget_get_frame()
1739  * __dwc3_stop_active_transfer - stop the current active transfer
1758 	cmd |= DWC3_DEPCMD_PARAM(dep->resource_index);  in __dwc3_stop_active_transfer()
1767 	if (ret == -ETIMEDOUT && dep->dwc->ep0state != EP0_SETUP_PHASE) {  in __dwc3_stop_active_transfer()
1768 		dep->flags |= DWC3_EP_DELAY_STOP;  in __dwc3_stop_active_transfer()
1772 	dep->resource_index = 0;  in __dwc3_stop_active_transfer()
1775 		dep->flags &= ~DWC3_EP_TRANSFER_STARTED;  in __dwc3_stop_active_transfer()
1777 		dep->flags |= DWC3_EP_END_TRANSFER_PENDING;  in __dwc3_stop_active_transfer()
1779 	dep->flags &= ~DWC3_EP_DELAY_STOP;  in __dwc3_stop_active_transfer()
1784  * dwc3_gadget_start_isoc_quirk - workaround invalid frame number
1787  * This function tests for the correct combination of BIT[15:14] from the 16-bit
1791  * In DWC_usb31 version 1.70a-ea06 and prior, for highspeed and fullspeed
1792  * isochronous IN, BIT[15:14] of the 16-bit microframe number reported by the
1796  * internal 16-bit microframe, the START TRANSFER command will pass and the
1799  * other conditions, the START TRANSFER command will fail with bus-expiry.
1804  * (or 2 seconds). 4 seconds into the future will result in a bus-expiry status.
1807  * command status will result in a 2-second delay start. The smaller BIT[15:14]
1831 	while (dep->combo_num < 2) {  in dwc3_gadget_start_isoc_quirk()
1838 		 * 4 uframes in the future with BIT[15:14] as dep->combo_num  in dwc3_gadget_start_isoc_quirk()
1840 		test_frame_number = dep->frame_number & DWC3_FRNUMBER_MASK;  in dwc3_gadget_start_isoc_quirk()
1841 		test_frame_number |= dep->combo_num << 14;  in dwc3_gadget_start_isoc_quirk()
1842 		test_frame_number += max_t(u32, 4, dep->interval);  in dwc3_gadget_start_isoc_quirk()
1844 		params.param0 = upper_32_bits(dep->dwc->bounce_addr);  in dwc3_gadget_start_isoc_quirk()
1845 		params.param1 = lower_32_bits(dep->dwc->bounce_addr);  in dwc3_gadget_start_isoc_quirk()
1851 		/* Redo if some other failure beside bus-expiry is received */  in dwc3_gadget_start_isoc_quirk()
1852 		if (cmd_status && cmd_status != -EAGAIN) {  in dwc3_gadget_start_isoc_quirk()
1853 			dep->start_cmd_status = 0;  in dwc3_gadget_start_isoc_quirk()
1854 			dep->combo_num = 0;  in dwc3_gadget_start_isoc_quirk()
1859 		if (dep->combo_num == 0)  in dwc3_gadget_start_isoc_quirk()
1860 			dep->start_cmd_status = cmd_status;  in dwc3_gadget_start_isoc_quirk()
1862 		dep->combo_num++;  in dwc3_gadget_start_isoc_quirk()
1875 	test0 = (dep->start_cmd_status == 0);  in dwc3_gadget_start_isoc_quirk()
1879 		dep->combo_num = 1;  in dwc3_gadget_start_isoc_quirk()
1881 		dep->combo_num = 2;  in dwc3_gadget_start_isoc_quirk()
1883 		dep->combo_num = 3;  in dwc3_gadget_start_isoc_quirk()
1885 		dep->combo_num = 0;  in dwc3_gadget_start_isoc_quirk()
1887 	dep->frame_number &= DWC3_FRNUMBER_MASK;  in dwc3_gadget_start_isoc_quirk()
1888 	dep->frame_number |= dep->combo_num << 14;  in dwc3_gadget_start_isoc_quirk()
1889 	dep->frame_number += max_t(u32, 4, dep->interval);  in dwc3_gadget_start_isoc_quirk()
1892 	dep->start_cmd_status = 0;  in dwc3_gadget_start_isoc_quirk()
1893 	dep->combo_num = 0;  in dwc3_gadget_start_isoc_quirk()
1900 	const struct usb_endpoint_descriptor *desc = dep->endpoint.desc;  in __dwc3_gadget_start_isoc()
1901 	struct dwc3 *dwc = dep->dwc;  in __dwc3_gadget_start_isoc()
1905 	if (list_empty(&dep->pending_list) &&  in __dwc3_gadget_start_isoc()
1906 	    list_empty(&dep->started_list)) {  in __dwc3_gadget_start_isoc()
1907 		dep->flags |= DWC3_EP_PENDING_REQUEST;  in __dwc3_gadget_start_isoc()
1908 		return -EAGAIN;  in __dwc3_gadget_start_isoc()
1911 	if (!dwc->dis_start_transfer_quirk &&  in __dwc3_gadget_start_isoc()
1914 		if (dwc->gadget->speed <= USB_SPEED_HIGH && dep->direction)  in __dwc3_gadget_start_isoc()
1918 	if (desc->bInterval <= 14 &&  in __dwc3_gadget_start_isoc()
1919 	    dwc->gadget->speed >= USB_SPEED_HIGH) {  in __dwc3_gadget_start_isoc()
1922 				(dep->frame_number & DWC3_FRNUMBER_MASK);  in __dwc3_gadget_start_isoc()
1930 		 * rollover has happened since XferNotReady.  in __dwc3_gadget_start_isoc()
1933 		dep->frame_number = (dep->frame_number & ~DWC3_FRNUMBER_MASK) |  in __dwc3_gadget_start_isoc()
1936 			dep->frame_number += BIT(14);  in __dwc3_gadget_start_isoc()
1943 		if (desc->bInterval < 3)  in __dwc3_gadget_start_isoc()
1944 			future_interval += 3 - desc->bInterval;  in __dwc3_gadget_start_isoc()
1946 		dep->frame_number = DWC3_ALIGN_FRAME(dep, future_interval);  in __dwc3_gadget_start_isoc()
1949 		if (ret != -EAGAIN)  in __dwc3_gadget_start_isoc()
1954 	 * After a number of unsuccessful start attempts due to bus-expiry  in __dwc3_gadget_start_isoc()
1958 	if (ret == -EAGAIN)  in __dwc3_gadget_start_isoc()
1966 	struct dwc3		*dwc = dep->dwc;  in __dwc3_gadget_ep_queue()
1968 	if (!dep->endpoint.desc || !dwc->pullups_connected || !dwc->connected) {  in __dwc3_gadget_ep_queue()
1969 		dev_dbg(dwc->dev, "%s: can't queue to disabled endpoint\n",  in __dwc3_gadget_ep_queue()
1970 				dep->name);  in __dwc3_gadget_ep_queue()
1971 		return -ESHUTDOWN;  in __dwc3_gadget_ep_queue()
1974 	if (WARN(req->dep != dep, "request %pK belongs to '%s'\n",  in __dwc3_gadget_ep_queue()
1975 				&req->request, req->dep->name))  in __dwc3_gadget_ep_queue()
1976 		return -EINVAL;  in __dwc3_gadget_ep_queue()
1978 	if (WARN(req->status < DWC3_REQUEST_STATUS_COMPLETED,  in __dwc3_gadget_ep_queue()
1980 				dep->name, &req->request))  in __dwc3_gadget_ep_queue()
1981 		return -EINVAL;  in __dwc3_gadget_ep_queue()
1983 	pm_runtime_get(dwc->dev);  in __dwc3_gadget_ep_queue()
1985 	req->request.actual	= 0;  in __dwc3_gadget_ep_queue()
1986 	req->request.status	= -EINPROGRESS;  in __dwc3_gadget_ep_queue()
1990 	list_add_tail(&req->list, &dep->pending_list);  in __dwc3_gadget_ep_queue()
1991 	req->status = DWC3_REQUEST_STATUS_QUEUED;  in __dwc3_gadget_ep_queue()
1993 	if (dep->flags & DWC3_EP_WAIT_TRANSFER_COMPLETE)  in __dwc3_gadget_ep_queue()
2000 	if ((dep->flags & DWC3_EP_END_TRANSFER_PENDING) ||  in __dwc3_gadget_ep_queue()
2001 	    (dep->flags & DWC3_EP_WEDGE) ||  in __dwc3_gadget_ep_queue()
2002 	    (dep->flags & DWC3_EP_DELAY_STOP) ||  in __dwc3_gadget_ep_queue()
2003 	    (dep->flags & DWC3_EP_STALL)) {  in __dwc3_gadget_ep_queue()
2004 		dep->flags |= DWC3_EP_DELAY_START;  in __dwc3_gadget_ep_queue()
2011 	 * (micro-)frame number.  in __dwc3_gadget_ep_queue()
2016 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {  in __dwc3_gadget_ep_queue()
2017 		if (!(dep->flags & DWC3_EP_TRANSFER_STARTED)) {  in __dwc3_gadget_ep_queue()
2018 			if ((dep->flags & DWC3_EP_PENDING_REQUEST))  in __dwc3_gadget_ep_queue()
2035 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_queue()
2041 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_queue()
2043 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_queue()
2052 	/* If req->trb is not set, then the request has not started */  in dwc3_gadget_ep_skip_trbs()
2053 	if (!req->trb)  in dwc3_gadget_ep_skip_trbs()
2066 	for (i = 0; i < req->num_trbs; i++) {  in dwc3_gadget_ep_skip_trbs()
2069 		trb = &dep->trb_pool[dep->trb_dequeue];  in dwc3_gadget_ep_skip_trbs()
2070 		trb->ctrl &= ~DWC3_TRB_CTRL_HWO;  in dwc3_gadget_ep_skip_trbs()
2074 	req->num_trbs = 0;  in dwc3_gadget_ep_skip_trbs()
2080 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_cleanup_cancelled_requests()
2082 	while (!list_empty(&dep->cancelled_list)) {  in dwc3_gadget_ep_cleanup_cancelled_requests()
2083 		req = next_request(&dep->cancelled_list);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2085 		switch (req->status) {  in dwc3_gadget_ep_cleanup_cancelled_requests()
2087 			dwc3_gadget_giveback(dep, req, -ESHUTDOWN);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2090 			dwc3_gadget_giveback(dep, req, -ECONNRESET);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2093 			dwc3_gadget_giveback(dep, req, -EPIPE);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2096 			dev_err(dwc->dev, "request cancelled with wrong reason:%d\n", req->status);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2097 			dwc3_gadget_giveback(dep, req, -ECONNRESET);  in dwc3_gadget_ep_cleanup_cancelled_requests()
2104 		if (!dep->endpoint.desc)  in dwc3_gadget_ep_cleanup_cancelled_requests()
2116 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_dequeue()
2123 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_dequeue()
2125 	list_for_each_entry(r, &dep->cancelled_list, list) {  in dwc3_gadget_ep_dequeue()
2130 	list_for_each_entry(r, &dep->pending_list, list) {  in dwc3_gadget_ep_dequeue()
2139 			if (dep->number > 1)  in dwc3_gadget_ep_dequeue()
2140 				dwc3_gadget_giveback(dep, req, -ECONNRESET);  in dwc3_gadget_ep_dequeue()
2147 	list_for_each_entry(r, &dep->started_list, list) {  in dwc3_gadget_ep_dequeue()
2158 			list_for_each_entry_safe(r, t, &dep->started_list, list)  in dwc3_gadget_ep_dequeue()
2162 			dep->flags &= ~DWC3_EP_WAIT_TRANSFER_COMPLETE;  in dwc3_gadget_ep_dequeue()
2168 	dev_err(dwc->dev, "request %pK was not queued to %s\n",  in dwc3_gadget_ep_dequeue()
2169 		request, ep->name);  in dwc3_gadget_ep_dequeue()
2170 	ret = -EINVAL;  in dwc3_gadget_ep_dequeue()
2172 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_dequeue()
2180 	struct dwc3				*dwc = dep->dwc;  in __dwc3_gadget_ep_set_halt()
2185 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {  in __dwc3_gadget_ep_set_halt()
2186 		dev_err(dwc->dev, "%s is of Isochronous type\n", dep->name);  in __dwc3_gadget_ep_set_halt()
2187 		return -EINVAL;  in __dwc3_gadget_ep_set_halt()
2198 		if (dep->number > 1)  in __dwc3_gadget_ep_set_halt()
2199 			trb = dwc3_ep_prev_trb(dep, dep->trb_enqueue);  in __dwc3_gadget_ep_set_halt()
2201 			trb = &dwc->ep0_trb[dep->trb_enqueue];  in __dwc3_gadget_ep_set_halt()
2203 		transfer_in_flight = trb->ctrl & DWC3_TRB_CTRL_HWO;  in __dwc3_gadget_ep_set_halt()
2204 		started = !list_empty(&dep->started_list);  in __dwc3_gadget_ep_set_halt()
2206 		if (!protocol && ((dep->direction && transfer_in_flight) ||  in __dwc3_gadget_ep_set_halt()
2207 				(!dep->direction && started))) {  in __dwc3_gadget_ep_set_halt()
2208 			return -EAGAIN;  in __dwc3_gadget_ep_set_halt()
2214 			dev_err(dwc->dev, "failed to set STALL on %s\n",  in __dwc3_gadget_ep_set_halt()
2215 					dep->name);  in __dwc3_gadget_ep_set_halt()
2217 			dep->flags |= DWC3_EP_STALL;  in __dwc3_gadget_ep_set_halt()
2224 		if (dep->number <= 1) {  in __dwc3_gadget_ep_set_halt()
2225 			dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);  in __dwc3_gadget_ep_set_halt()
2231 		list_for_each_entry_safe(req, tmp, &dep->started_list, list)  in __dwc3_gadget_ep_set_halt()
2234 		if (dep->flags & DWC3_EP_END_TRANSFER_PENDING ||  in __dwc3_gadget_ep_set_halt()
2235 		    (dep->flags & DWC3_EP_DELAY_STOP)) {  in __dwc3_gadget_ep_set_halt()
2236 			dep->flags |= DWC3_EP_PENDING_CLEAR_STALL;  in __dwc3_gadget_ep_set_halt()
2238 				dwc->clear_stall_protocol = dep->number;  in __dwc3_gadget_ep_set_halt()
2247 			dev_err(dwc->dev, "failed to clear STALL on %s\n",  in __dwc3_gadget_ep_set_halt()
2248 					dep->name);  in __dwc3_gadget_ep_set_halt()
2252 		dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);  in __dwc3_gadget_ep_set_halt()
2254 		if ((dep->flags & DWC3_EP_DELAY_START) &&  in __dwc3_gadget_ep_set_halt()
2255 		    !usb_endpoint_xfer_isoc(dep->endpoint.desc))  in __dwc3_gadget_ep_set_halt()
2258 		dep->flags &= ~DWC3_EP_DELAY_START;  in __dwc3_gadget_ep_set_halt()
2267 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_set_halt()
2273 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_set_halt()
2275 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_set_halt()
2283 	struct dwc3			*dwc = dep->dwc;  in dwc3_gadget_ep_set_wedge()
2287 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_ep_set_wedge()
2288 	dep->flags |= DWC3_EP_WEDGE;  in dwc3_gadget_ep_set_wedge()
2290 	if (dep->number == 0 || dep->number == 1)  in dwc3_gadget_ep_set_wedge()
2294 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_ep_set_wedge()
2299 /* -------------------------------------------------------------------------- */
2329 /* -------------------------------------------------------------------------- */
2338 	reg = dwc3_readl(dwc->regs, DWC3_DEVTEN);  in dwc3_gadget_enable_linksts_evts()
2344 	dwc3_writel(dwc->regs, DWC3_DEVTEN, reg);  in dwc3_gadget_enable_linksts_evts()
2369 	reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in __dwc3_gadget_wakeup()
2382 		return -EINVAL;  in __dwc3_gadget_wakeup()
2390 		dev_err(dwc->dev, "failed to put link in Recovery\n");  in __dwc3_gadget_wakeup()
2398 		reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in __dwc3_gadget_wakeup()
2400 		dwc3_writel(dwc->regs, DWC3_DCTL, reg);  in __dwc3_gadget_wakeup()
2413 	while (retries--) {  in __dwc3_gadget_wakeup()
2414 		reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in __dwc3_gadget_wakeup()
2422 		dev_err(dwc->dev, "failed to send remote wakeup\n");  in __dwc3_gadget_wakeup()
2423 		return -EINVAL;  in __dwc3_gadget_wakeup()
2435 	if (!dwc->wakeup_configured) {  in dwc3_gadget_wakeup()
2436 		dev_err(dwc->dev, "remote wakeup not configured\n");  in dwc3_gadget_wakeup()
2437 		return -EINVAL;  in dwc3_gadget_wakeup()
2440 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_wakeup()
2441 	if (!dwc->gadget->wakeup_armed) {  in dwc3_gadget_wakeup()
2442 		dev_err(dwc->dev, "not armed for remote wakeup\n");  in dwc3_gadget_wakeup()
2443 		spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_wakeup()
2444 		return -EINVAL;  in dwc3_gadget_wakeup()
2448 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_wakeup()
2462 	if (!dwc->wakeup_configured) {  in dwc3_gadget_func_wakeup()
2463 		dev_err(dwc->dev, "remote wakeup not configured\n");  in dwc3_gadget_func_wakeup()
2464 		return -EINVAL;  in dwc3_gadget_func_wakeup()
2467 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_func_wakeup()
2476 			spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_func_wakeup()
2477 			return -EINVAL;  in dwc3_gadget_func_wakeup()
2480 		dwc->suspended = false;  in dwc3_gadget_func_wakeup()
2481 		dwc->link_state = DWC3_LINK_STATE_U0;  in dwc3_gadget_func_wakeup()
2488 		dev_err(dwc->dev, "function remote wakeup failed, ret:%d\n", ret);  in dwc3_gadget_func_wakeup()
2490 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_func_wakeup()
2500 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_set_remote_wakeup()
2501 	dwc->wakeup_configured = !!set;  in dwc3_gadget_set_remote_wakeup()
2502 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_set_remote_wakeup()
2513 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_set_selfpowered()
2514 	g->is_selfpowered = !!is_selfpowered;  in dwc3_gadget_set_selfpowered()
2515 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_set_selfpowered()
2524 	for (epnum = 2; epnum < dwc->num_eps; epnum++) {  in dwc3_stop_active_transfers()
2527 		dep = dwc->eps[epnum];  in dwc3_stop_active_transfers()
2531 		dwc3_remove_requests(dwc, dep, -ESHUTDOWN);  in dwc3_stop_active_transfers()
2537 	enum usb_ssp_rate	ssp_rate = dwc->gadget_ssp_rate;  in __dwc3_gadget_set_ssp_rate()
2541 		ssp_rate = dwc->max_ssp_rate;  in __dwc3_gadget_set_ssp_rate()
2543 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in __dwc3_gadget_set_ssp_rate()
2549 	else if (dwc->max_ssp_rate != USB_SSP_GEN_1x2)  in __dwc3_gadget_set_ssp_rate()
2553 	    dwc->max_ssp_rate != USB_SSP_GEN_2x1)  in __dwc3_gadget_set_ssp_rate()
2556 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in __dwc3_gadget_set_ssp_rate()
2564 	speed = dwc->gadget_max_speed;  in __dwc3_gadget_set_speed()
2565 	if (speed == USB_SPEED_UNKNOWN || speed > dwc->maximum_speed)  in __dwc3_gadget_set_speed()
2566 		speed = dwc->maximum_speed;  in __dwc3_gadget_set_speed()
2574 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in __dwc3_gadget_set_speed()
2580 	 * bit if we try to force the IP to USB2-only mode.  in __dwc3_gadget_set_speed()
2591 	    !dwc->dis_metastability_quirk) {  in __dwc3_gadget_set_speed()
2611 			dev_err(dwc->dev, "invalid speed (%d)\n", speed);  in __dwc3_gadget_set_speed()
2625 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in __dwc3_gadget_set_speed()
2634 	if (pm_runtime_suspended(dwc->dev))  in dwc3_gadget_run_stop()
2647 	 * mentioned in the dwc3 programming guide. It has been tested on an  in dwc3_gadget_run_stop()
2650 	reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));  in dwc3_gadget_run_stop()
2662 		dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);  in dwc3_gadget_run_stop()
2664 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_run_stop()
2676 		dwc->pullups_connected = true;  in dwc3_gadget_run_stop()
2680 		dwc->pullups_connected = false;  in dwc3_gadget_run_stop()
2687 		reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in dwc3_gadget_run_stop()
2689 	} while (--timeout && !(!is_on ^ !reg));  in dwc3_gadget_run_stop()
2692 		reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));  in dwc3_gadget_run_stop()
2694 		dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);  in dwc3_gadget_run_stop()
2698 		return -ETIMEDOUT;  in dwc3_gadget_run_stop()
2712 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2713 	if (!dwc->pullups_connected) {  in dwc3_gadget_soft_disconnect()
2714 		spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2718 	dwc->connected = false;  in dwc3_gadget_soft_disconnect()
2724 	if (dwc->delayed_status)  in dwc3_gadget_soft_disconnect()
2729 	 * Section 4.1.8 Table 4-7, it states that for a device-initiated  in dwc3_gadget_soft_disconnect()
2735 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2744 	if (dwc->ep0state != EP0_SETUP_PHASE) {  in dwc3_gadget_soft_disconnect()
2745 		reinit_completion(&dwc->ep0_in_setup);  in dwc3_gadget_soft_disconnect()
2747 		ret = wait_for_completion_timeout(&dwc->ep0_in_setup,  in dwc3_gadget_soft_disconnect()
2750 			dev_warn(dwc->dev, "wait for SETUP phase timed out\n");  in dwc3_gadget_soft_disconnect()
2751 			spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2753 			spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2772 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2774 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_soft_disconnect()
2776 	usb_gadget_set_state(dwc->gadget, USB_STATE_NOTATTACHED);  in dwc3_gadget_soft_disconnect()
2788 	 * device-initiated disconnect requires a core soft reset  in dwc3_gadget_soft_connect()
2807 	dwc->softconnect = is_on;  in dwc3_gadget_pullup()
2815 		pm_runtime_barrier(dwc->dev);  in dwc3_gadget_pullup()
2816 		if (pm_runtime_suspended(dwc->dev))  in dwc3_gadget_pullup()
2825 	ret = pm_runtime_get_sync(dwc->dev);  in dwc3_gadget_pullup()
2827 		pm_runtime_put(dwc->dev);  in dwc3_gadget_pullup()
2829 			pm_runtime_set_suspended(dwc->dev);  in dwc3_gadget_pullup()
2833 	if (dwc->pullups_connected == is_on) {  in dwc3_gadget_pullup()
2834 		pm_runtime_put(dwc->dev);  in dwc3_gadget_pullup()
2838 	synchronize_irq(dwc->irq_gadget);  in dwc3_gadget_pullup()
2845 	pm_runtime_put(dwc->dev);  in dwc3_gadget_pullup()
2866 	/* On 2.30a and above this bit enables U3/L2-L1 Suspend Events */  in dwc3_gadget_enable_irq()
2870 	dwc3_writel(dwc->regs, DWC3_DEVTEN, reg);  in dwc3_gadget_enable_irq()
2876 	dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00);  in dwc3_gadget_disable_irq()
2883  * dwc3_gadget_setup_nump - calculate and initialize NUMP field of %DWC3_DCFG
2896  * RxFIFO Size = (RAM2_DEPTH * MDWIDTH / 8) - 24 - 16;
2910 	ram2_depth = DWC3_GHWPARAMS7_RAM2_DEPTH(dwc->hwparams.hwparams7);  in dwc3_gadget_setup_nump()
2913 	nump = ((ram2_depth * mdwidth / 8) - 24 - 16) / 1024;  in dwc3_gadget_setup_nump()
2917 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in dwc3_gadget_setup_nump()
2920 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in dwc3_gadget_setup_nump()
2930 	 * Use IMOD if enabled via dwc->imod_interval. Otherwise, if  in __dwc3_gadget_start()
2933 	if (dwc->imod_interval) {  in __dwc3_gadget_start()
2934 		dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), dwc->imod_interval);  in __dwc3_gadget_start()
2935 		dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), DWC3_GEVNTCOUNT_EHB);  in __dwc3_gadget_start()
2937 		dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), 0);  in __dwc3_gadget_start()
2947 	reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG);  in __dwc3_gadget_start()
2953 	dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg);  in __dwc3_gadget_start()
2964 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in __dwc3_gadget_start()
2966 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in __dwc3_gadget_start()
2969 	if (DWC3_MST_CAPABLE(&dwc->hwparams)) {  in __dwc3_gadget_start()
2970 		reg = dwc3_readl(dwc->regs, DWC3_DCFG1);  in __dwc3_gadget_start()
2972 		dwc3_writel(dwc->regs, DWC3_DCFG1, reg);  in __dwc3_gadget_start()
2980 		dev_err(dwc->dev, "failed to config endpoints\n");  in __dwc3_gadget_start()
2984 	dep = dwc->eps[0];  in __dwc3_gadget_start()
2985 	dep->flags = 0;  in __dwc3_gadget_start()
2988 		dev_err(dwc->dev, "failed to enable %s\n", dep->name);  in __dwc3_gadget_start()
2992 	dep = dwc->eps[1];  in __dwc3_gadget_start()
2993 	dep->flags = 0;  in __dwc3_gadget_start()
2996 		dev_err(dwc->dev, "failed to enable %s\n", dep->name);  in __dwc3_gadget_start()
3001 	dwc->ep0state = EP0_SETUP_PHASE;  in __dwc3_gadget_start()
3002 	dwc->ep0_bounced = false;  in __dwc3_gadget_start()
3003 	dwc->link_state = DWC3_LINK_STATE_SS_DIS;  in __dwc3_gadget_start()
3004 	dwc->delayed_status = false;  in __dwc3_gadget_start()
3013 	__dwc3_gadget_ep_disable(dwc->eps[0]);  in __dwc3_gadget_start()
3027 	irq = dwc->irq_gadget;  in dwc3_gadget_start()
3029 			IRQF_SHARED, "dwc3", dwc->ev_buf);  in dwc3_gadget_start()
3031 		dev_err(dwc->dev, "failed to request irq #%d --> %d\n",  in dwc3_gadget_start()
3036 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_start()
3037 	dwc->gadget_driver	= driver;  in dwc3_gadget_start()
3038 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_start()
3040 	if (dwc->sys_wakeup)  in dwc3_gadget_start()
3041 		device_wakeup_enable(dwc->sysdev);  in dwc3_gadget_start()
3049 	__dwc3_gadget_ep_disable(dwc->eps[0]);  in __dwc3_gadget_stop()
3050 	__dwc3_gadget_ep_disable(dwc->eps[1]);  in __dwc3_gadget_stop()
3058 	if (dwc->sys_wakeup)  in dwc3_gadget_stop()
3059 		device_wakeup_disable(dwc->sysdev);  in dwc3_gadget_stop()
3061 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_stop()
3062 	dwc->gadget_driver	= NULL;  in dwc3_gadget_stop()
3063 	dwc->max_cfg_eps = 0;  in dwc3_gadget_stop()
3064 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_stop()
3066 	free_irq(dwc->irq_gadget, dwc->ev_buf);  in dwc3_gadget_stop()
3076 	params->besl_baseline = USB_DEFAULT_BESL_UNSPECIFIED;  in dwc3_gadget_config_params()
3077 	params->besl_deep = USB_DEFAULT_BESL_UNSPECIFIED;  in dwc3_gadget_config_params()
3080 	if (!dwc->dis_enblslpm_quirk) {  in dwc3_gadget_config_params()
3090 		params->besl_baseline = 1;  in dwc3_gadget_config_params()
3091 		if (dwc->is_utmi_l1_suspend)  in dwc3_gadget_config_params()
3092 			params->besl_deep =  in dwc3_gadget_config_params()
3093 				clamp_t(u8, dwc->hird_threshold, 2, 15);  in dwc3_gadget_config_params()
3097 	if (dwc->dis_u1_entry_quirk)  in dwc3_gadget_config_params()
3098 		params->bU1devExitLat = 0;  in dwc3_gadget_config_params()
3100 		params->bU1devExitLat = DWC3_DEFAULT_U1_DEV_EXIT_LAT;  in dwc3_gadget_config_params()
3103 	if (dwc->dis_u2_entry_quirk)  in dwc3_gadget_config_params()
3104 		params->bU2DevExitLat = 0;  in dwc3_gadget_config_params()
3106 		params->bU2DevExitLat =  in dwc3_gadget_config_params()
3116 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_set_speed()
3117 	dwc->gadget_max_speed = speed;  in dwc3_gadget_set_speed()
3118 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_set_speed()
3127 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_set_ssp_rate()
3128 	dwc->gadget_max_speed = USB_SPEED_SUPER_PLUS;  in dwc3_gadget_set_ssp_rate()
3129 	dwc->gadget_ssp_rate = rate;  in dwc3_gadget_set_ssp_rate()
3130 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_set_ssp_rate()
3139 	if (dwc->usb2_phy)  in dwc3_gadget_vbus_draw()
3140 		return usb_phy_set_power(dwc->usb2_phy, mA);  in dwc3_gadget_vbus_draw()
3142 	if (!dwc->usb_psy)  in dwc3_gadget_vbus_draw()
3143 		return -EOPNOTSUPP;  in dwc3_gadget_vbus_draw()
3146 	ret = power_supply_set_property(dwc->usb_psy, POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, &val);  in dwc3_gadget_vbus_draw()
3152  * dwc3_gadget_check_config - ensure dwc3 can support the USB configuration
3169 	if (!dwc->do_fifo_resize)  in dwc3_gadget_check_config()
3172 	list_for_each_entry(ep, &g->ep_list, ep_list) {  in dwc3_gadget_check_config()
3174 		if (ep->claimed && (ep->address & USB_DIR_IN))  in dwc3_gadget_check_config()
3178 	if (ep_num <= dwc->max_cfg_eps)  in dwc3_gadget_check_config()
3182 	dwc->max_cfg_eps = ep_num;  in dwc3_gadget_check_config()
3184 	fifo_size = dwc3_gadget_calc_tx_fifo_size(dwc, dwc->max_cfg_eps);  in dwc3_gadget_check_config()
3186 	fifo_size += dwc->max_cfg_eps;  in dwc3_gadget_check_config()
3191 		return -ENOMEM;  in dwc3_gadget_check_config()
3201 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_async_callbacks()
3202 	dwc->async_callbacks = enable;  in dwc3_gadget_async_callbacks()
3203 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_async_callbacks()
3223 /* -------------------------------------------------------------------------- */
3227 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_init_control_endpoint()
3229 	usb_ep_set_maxpacket_limit(&dep->endpoint, 512);  in dwc3_gadget_init_control_endpoint()
3230 	dep->endpoint.maxburst = 1;  in dwc3_gadget_init_control_endpoint()
3231 	dep->endpoint.ops = &dwc3_gadget_ep0_ops;  in dwc3_gadget_init_control_endpoint()
3232 	if (!dep->direction)  in dwc3_gadget_init_control_endpoint()
3233 		dwc->gadget->ep0 = &dep->endpoint;  in dwc3_gadget_init_control_endpoint()
3235 	dep->endpoint.caps.type_control = true;  in dwc3_gadget_init_control_endpoint()
3242 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_init_in_endpoint()
3252 	size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(dep->number >> 1));  in dwc3_gadget_init_in_endpoint()
3263 	 * maxpacket = mdwidth * (fifo_size - 1);  in dwc3_gadget_init_in_endpoint()
3267 	 * maxpacket = mdwidth * ((fifo_size - 1) - 1) - mdwidth;  in dwc3_gadget_init_in_endpoint()
3270 		maxpacket = mdwidth * (size - 1);  in dwc3_gadget_init_in_endpoint()
3272 		maxpacket = mdwidth * ((size - 1) - 1) - mdwidth;  in dwc3_gadget_init_in_endpoint()
3276 	usb_ep_set_maxpacket_limit(&dep->endpoint, size);  in dwc3_gadget_init_in_endpoint()
3278 	dep->endpoint.max_streams = 16;  in dwc3_gadget_init_in_endpoint()
3279 	dep->endpoint.ops = &dwc3_gadget_ep_ops;  in dwc3_gadget_init_in_endpoint()
3280 	list_add_tail(&dep->endpoint.ep_list,  in dwc3_gadget_init_in_endpoint()
3281 			&dwc->gadget->ep_list);  in dwc3_gadget_init_in_endpoint()
3282 	dep->endpoint.caps.type_iso = true;  in dwc3_gadget_init_in_endpoint()
3283 	dep->endpoint.caps.type_bulk = true;  in dwc3_gadget_init_in_endpoint()
3284 	dep->endpoint.caps.type_int = true;  in dwc3_gadget_init_in_endpoint()
3291 	struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_init_out_endpoint()
3301 	size = dwc3_readl(dwc->regs, DWC3_GRXFIFOSIZ(0));  in dwc3_gadget_init_out_endpoint()
3318 	size -= (3 * 8) + 16;  in dwc3_gadget_init_out_endpoint()
3324 	usb_ep_set_maxpacket_limit(&dep->endpoint, size);  in dwc3_gadget_init_out_endpoint()
3325 	dep->endpoint.max_streams = 16;  in dwc3_gadget_init_out_endpoint()
3326 	dep->endpoint.ops = &dwc3_gadget_ep_ops;  in dwc3_gadget_init_out_endpoint()
3327 	list_add_tail(&dep->endpoint.ep_list,  in dwc3_gadget_init_out_endpoint()
3328 			&dwc->gadget->ep_list);  in dwc3_gadget_init_out_endpoint()
3329 	dep->endpoint.caps.type_iso = true;  in dwc3_gadget_init_out_endpoint()
3330 	dep->endpoint.caps.type_bulk = true;  in dwc3_gadget_init_out_endpoint()
3331 	dep->endpoint.caps.type_int = true;  in dwc3_gadget_init_out_endpoint()
3340 	struct dwc3	*dwc = dep->dwc;  in dwc3_nostream_work()
3343 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_nostream_work()
3344 	if (dep->flags & DWC3_EP_STREAM_PRIMED)  in dwc3_nostream_work()
3347 	if ((dep->flags & DWC3_EP_IGNORE_NEXT_NOSTREAM) ||  in dwc3_nostream_work()
3348 	    (!DWC3_MST_CAPABLE(&dwc->hwparams) &&  in dwc3_nostream_work()
3349 	     !(dep->flags & DWC3_EP_WAIT_TRANSFER_COMPLETE)))  in dwc3_nostream_work()
3368 		dwc3_send_gadget_generic_command(dwc, cmd, dep->number);  in dwc3_nostream_work()
3370 		dep->flags |= DWC3_EP_DELAY_START;  in dwc3_nostream_work()
3372 		spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_nostream_work()
3376 	dep->flags &= ~DWC3_EP_IGNORE_NEXT_NOSTREAM;  in dwc3_nostream_work()
3377 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_nostream_work()
3389 		return -ENOMEM;  in dwc3_gadget_init_endpoint()
3391 	dep->dwc = dwc;  in dwc3_gadget_init_endpoint()
3392 	dep->number = epnum;  in dwc3_gadget_init_endpoint()
3393 	dep->direction = direction;  in dwc3_gadget_init_endpoint()
3394 	dep->regs = dwc->regs + DWC3_DEP_BASE(epnum);  in dwc3_gadget_init_endpoint()
3395 	dwc->eps[epnum] = dep;  in dwc3_gadget_init_endpoint()
3396 	dep->combo_num = 0;  in dwc3_gadget_init_endpoint()
3397 	dep->start_cmd_status = 0;  in dwc3_gadget_init_endpoint()
3399 	snprintf(dep->name, sizeof(dep->name), "ep%u%s", num,  in dwc3_gadget_init_endpoint()
3402 	dep->endpoint.name = dep->name;  in dwc3_gadget_init_endpoint()
3404 	if (!(dep->number > 1)) {  in dwc3_gadget_init_endpoint()
3405 		dep->endpoint.desc = &dwc3_gadget_ep0_desc;  in dwc3_gadget_init_endpoint()
3406 		dep->endpoint.comp_desc = NULL;  in dwc3_gadget_init_endpoint()
3419 	dep->endpoint.caps.dir_in = direction;  in dwc3_gadget_init_endpoint()
3420 	dep->endpoint.caps.dir_out = !direction;  in dwc3_gadget_init_endpoint()
3422 	INIT_LIST_HEAD(&dep->pending_list);  in dwc3_gadget_init_endpoint()
3423 	INIT_LIST_HEAD(&dep->started_list);  in dwc3_gadget_init_endpoint()
3424 	INIT_LIST_HEAD(&dep->cancelled_list);  in dwc3_gadget_init_endpoint()
3425 	INIT_DELAYED_WORK(&dep->nostream_work, dwc3_nostream_work);  in dwc3_gadget_init_endpoint()
3436 	INIT_LIST_HEAD(&dwc->gadget->ep_list);  in dwc3_gadget_init_endpoints()
3455 		dep = dwc->eps[epnum];  in dwc3_gadget_free_endpoints()
3460 		 * bi-directional USB endpoint 0.  in dwc3_gadget_free_endpoints()
3469 			list_del(&dep->endpoint.ep_list);  in dwc3_gadget_free_endpoints()
3477 /* -------------------------------------------------------------------------- */
3488 	req->num_trbs--;  in dwc3_gadget_ep_reclaim_completed_trb()
3495 	 * bit and SW has to do it manually.  in dwc3_gadget_ep_reclaim_completed_trb()
3500 	if (chain && (trb->ctrl & DWC3_TRB_CTRL_HWO))  in dwc3_gadget_ep_reclaim_completed_trb()
3501 		trb->ctrl &= ~DWC3_TRB_CTRL_HWO;  in dwc3_gadget_ep_reclaim_completed_trb()
3505 	 * have the Isoc-First type. Track and report its interval frame number.  in dwc3_gadget_ep_reclaim_completed_trb()
3507 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&  in dwc3_gadget_ep_reclaim_completed_trb()
3508 	    (trb->ctrl & DWC3_TRBCTL_ISOCHRONOUS_FIRST)) {  in dwc3_gadget_ep_reclaim_completed_trb()
3511 		frame_number = DWC3_TRB_CTRL_GET_SID_SOFN(trb->ctrl);  in dwc3_gadget_ep_reclaim_completed_trb()
3512 		frame_number &= ~(dep->interval - 1);  in dwc3_gadget_ep_reclaim_completed_trb()
3513 		req->request.frame_number = frame_number;  in dwc3_gadget_ep_reclaim_completed_trb()
3519 	 * TRB. Don't add it to req->remaining calculation.  in dwc3_gadget_ep_reclaim_completed_trb()
3521 	if (trb->bpl == lower_32_bits(dep->dwc->bounce_addr) &&  in dwc3_gadget_ep_reclaim_completed_trb()
3522 	    trb->bph == upper_32_bits(dep->dwc->bounce_addr)) {  in dwc3_gadget_ep_reclaim_completed_trb()
3523 		trb->ctrl &= ~DWC3_TRB_CTRL_HWO;  in dwc3_gadget_ep_reclaim_completed_trb()
3527 	count = trb->size & DWC3_TRB_SIZE_MASK;  in dwc3_gadget_ep_reclaim_completed_trb()
3528 	req->remaining += count;  in dwc3_gadget_ep_reclaim_completed_trb()
3530 	if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)  in dwc3_gadget_ep_reclaim_completed_trb()
3533 	if (event->status & DEPEVT_STATUS_SHORT && !chain)  in dwc3_gadget_ep_reclaim_completed_trb()
3536 	if ((trb->ctrl & DWC3_TRB_CTRL_ISP_IMI) &&  in dwc3_gadget_ep_reclaim_completed_trb()
3537 	    DWC3_TRB_SIZE_TRBSTS(trb->size) == DWC3_TRBSTS_MISSED_ISOC)  in dwc3_gadget_ep_reclaim_completed_trb()
3540 	if ((trb->ctrl & DWC3_TRB_CTRL_IOC) ||  in dwc3_gadget_ep_reclaim_completed_trb()
3541 	    (trb->ctrl & DWC3_TRB_CTRL_LST))  in dwc3_gadget_ep_reclaim_completed_trb()
3552 	unsigned int num_completed_trbs = req->num_trbs;  in dwc3_gadget_ep_reclaim_trb_sg()
3557 		trb = &dep->trb_pool[dep->trb_dequeue];  in dwc3_gadget_ep_reclaim_trb_sg()
3561 				!!(trb->ctrl & DWC3_TRB_CTRL_CHN));  in dwc3_gadget_ep_reclaim_trb_sg()
3571 	return req->num_pending_sgs == 0 && req->num_trbs == 0;  in dwc3_gadget_ep_request_completed()
3583 	req->request.actual = req->request.length - req->remaining;  in dwc3_gadget_ep_cleanup_completed_request()
3594 	if (req->request.no_interrupt) {  in dwc3_gadget_ep_cleanup_completed_request()
3597 		trb = dwc3_ep_prev_trb(dep, dep->trb_dequeue);  in dwc3_gadget_ep_cleanup_completed_request()
3598 		switch (DWC3_TRB_SIZE_TRBSTS(trb->size)) {  in dwc3_gadget_ep_cleanup_completed_request()
3601 			request_status = -EXDEV;  in dwc3_gadget_ep_cleanup_completed_request()
3627 	while (!list_empty(&dep->started_list)) {  in dwc3_gadget_ep_cleanup_completed_requests()
3630 		req = next_request(&dep->started_list);  in dwc3_gadget_ep_cleanup_completed_requests()
3639 		if (!dep->endpoint.desc)  in dwc3_gadget_ep_cleanup_completed_requests()
3647 	struct dwc3		*dwc = dep->dwc;  in dwc3_gadget_ep_should_continue()
3649 	if (!dep->endpoint.desc || !dwc->pullups_connected ||  in dwc3_gadget_ep_should_continue()
3650 	    !dwc->connected)  in dwc3_gadget_ep_should_continue()
3653 	if (!list_empty(&dep->pending_list))  in dwc3_gadget_ep_should_continue()
3660 	req = next_request(&dep->started_list);  in dwc3_gadget_ep_should_continue()
3670 	dep->frame_number = event->parameters;  in dwc3_gadget_endpoint_frame_from_event()
3676 	struct dwc3		*dwc = dep->dwc;  in dwc3_gadget_endpoint_trbs_complete()
3681 	if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)  in dwc3_gadget_endpoint_trbs_complete()
3684 	if (!dep->endpoint.desc)  in dwc3_gadget_endpoint_trbs_complete()
3687 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&  in dwc3_gadget_endpoint_trbs_complete()
3688 		list_empty(&dep->started_list) &&  in dwc3_gadget_endpoint_trbs_complete()
3689 		(list_empty(&dep->pending_list) || status == -EXDEV))  in dwc3_gadget_endpoint_trbs_complete()
3697 	 * WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.  in dwc3_gadget_endpoint_trbs_complete()
3705 			dep = dwc->eps[i];  in dwc3_gadget_endpoint_trbs_complete()
3707 			if (!(dep->flags & DWC3_EP_ENABLED))  in dwc3_gadget_endpoint_trbs_complete()
3710 			if (!list_empty(&dep->started_list))  in dwc3_gadget_endpoint_trbs_complete()
3714 		reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_endpoint_trbs_complete()
3715 		reg |= dwc->u1u2;  in dwc3_gadget_endpoint_trbs_complete()
3716 		dwc3_writel(dwc->regs, DWC3_DCTL, reg);  in dwc3_gadget_endpoint_trbs_complete()
3718 		dwc->u1u2 = 0;  in dwc3_gadget_endpoint_trbs_complete()
3729 	if (!dep->endpoint.desc)  in dwc3_gadget_endpoint_transfer_in_progress()
3732 	if (usb_endpoint_xfer_isoc(dep->endpoint.desc))  in dwc3_gadget_endpoint_transfer_in_progress()
3735 	if (event->status & DEPEVT_STATUS_BUSERR)  in dwc3_gadget_endpoint_transfer_in_progress()
3736 		status = -ECONNRESET;  in dwc3_gadget_endpoint_transfer_in_progress()
3738 	if (event->status & DEPEVT_STATUS_MISSED_ISOC)  in dwc3_gadget_endpoint_transfer_in_progress()
3739 		status = -EXDEV;  in dwc3_gadget_endpoint_transfer_in_progress()
3749 	dep->flags &= ~DWC3_EP_TRANSFER_STARTED;  in dwc3_gadget_endpoint_transfer_complete()
3751 	if (event->status & DEPEVT_STATUS_BUSERR)  in dwc3_gadget_endpoint_transfer_complete()
3752 		status = -ECONNRESET;  in dwc3_gadget_endpoint_transfer_complete()
3755 		dep->flags &= ~DWC3_EP_WAIT_TRANSFER_COMPLETE;  in dwc3_gadget_endpoint_transfer_complete()
3771 	if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)  in dwc3_gadget_endpoint_transfer_not_ready()
3780 	u8 cmd = DEPEVT_PARAMETER_CMD(event->parameters);  in dwc3_gadget_endpoint_command_complete()
3790 	if (dep->stream_capable)  in dwc3_gadget_endpoint_command_complete()
3791 		dep->flags |= DWC3_EP_IGNORE_NEXT_NOSTREAM;  in dwc3_gadget_endpoint_command_complete()
3793 	dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING;  in dwc3_gadget_endpoint_command_complete()
3794 	dep->flags &= ~DWC3_EP_TRANSFER_STARTED;  in dwc3_gadget_endpoint_command_complete()
3797 	if (dep->flags & DWC3_EP_PENDING_CLEAR_STALL) {  in dwc3_gadget_endpoint_command_complete()
3798 		struct dwc3 *dwc = dep->dwc;  in dwc3_gadget_endpoint_command_complete()
3800 		dep->flags &= ~DWC3_EP_PENDING_CLEAR_STALL;  in dwc3_gadget_endpoint_command_complete()
3802 			struct usb_ep *ep0 = &dwc->eps[0]->endpoint;  in dwc3_gadget_endpoint_command_complete()
3804 			dev_err(dwc->dev, "failed to clear STALL on %s\n", dep->name);  in dwc3_gadget_endpoint_command_complete()
3805 			if (dwc->delayed_status)  in dwc3_gadget_endpoint_command_complete()
3810 		dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);  in dwc3_gadget_endpoint_command_complete()
3811 		if (dwc->clear_stall_protocol == dep->number)  in dwc3_gadget_endpoint_command_complete()
3815 	if ((dep->flags & DWC3_EP_DELAY_START) &&  in dwc3_gadget_endpoint_command_complete()
3816 	    !usb_endpoint_xfer_isoc(dep->endpoint.desc))  in dwc3_gadget_endpoint_command_complete()
3819 	dep->flags &= ~DWC3_EP_DELAY_START;  in dwc3_gadget_endpoint_command_complete()
3825 	if (event->status == DEPEVT_STREAMEVT_FOUND) {  in dwc3_gadget_endpoint_stream_event()
3826 		cancel_delayed_work(&dep->nostream_work);  in dwc3_gadget_endpoint_stream_event()
3827 		dep->flags |= DWC3_EP_STREAM_PRIMED;  in dwc3_gadget_endpoint_stream_event()
3828 		dep->flags &= ~DWC3_EP_IGNORE_NEXT_NOSTREAM;  in dwc3_gadget_endpoint_stream_event()
3833 	switch (event->parameters) {  in dwc3_gadget_endpoint_stream_event()
3835 		cancel_delayed_work(&dep->nostream_work);  in dwc3_gadget_endpoint_stream_event()
3836 		dep->flags |= DWC3_EP_STREAM_PRIMED;  in dwc3_gadget_endpoint_stream_event()
3837 		dep->flags &= ~DWC3_EP_IGNORE_NEXT_NOSTREAM;  in dwc3_gadget_endpoint_stream_event()
3840 		dep->flags &= ~DWC3_EP_STREAM_PRIMED;  in dwc3_gadget_endpoint_stream_event()
3841 		if (dep->flags & DWC3_EP_FORCE_RESTART_STREAM)  in dwc3_gadget_endpoint_stream_event()
3842 			queue_delayed_work(system_wq, &dep->nostream_work,  in dwc3_gadget_endpoint_stream_event()
3852 	u8			epnum = event->endpoint_number;  in dwc3_endpoint_interrupt()
3854 	dep = dwc->eps[epnum];  in dwc3_endpoint_interrupt()
3856 	if (!(dep->flags & DWC3_EP_ENABLED)) {  in dwc3_endpoint_interrupt()
3857 		if ((epnum > 1) && !(dep->flags & DWC3_EP_TRANSFER_STARTED))  in dwc3_endpoint_interrupt()
3861 		if ((event->endpoint_event != DWC3_DEPEVT_EPCMDCMPLT) &&  in dwc3_endpoint_interrupt()
3862 			!(epnum <= 1 && event->endpoint_event == DWC3_DEPEVT_XFERCOMPLETE))  in dwc3_endpoint_interrupt()
3871 	switch (event->endpoint_event) {  in dwc3_endpoint_interrupt()
3890 		dev_err(dwc->dev, "unknown endpoint event %d\n", event->endpoint_event);  in dwc3_endpoint_interrupt()
3897 	if (dwc->async_callbacks && dwc->gadget_driver->disconnect) {  in dwc3_disconnect_gadget()
3898 		spin_unlock(&dwc->lock);  in dwc3_disconnect_gadget()
3899 		dwc->gadget_driver->disconnect(dwc->gadget);  in dwc3_disconnect_gadget()
3900 		spin_lock(&dwc->lock);  in dwc3_disconnect_gadget()
3906 	if (dwc->async_callbacks && dwc->gadget_driver->suspend) {  in dwc3_suspend_gadget()
3907 		spin_unlock(&dwc->lock);  in dwc3_suspend_gadget()
3908 		dwc->gadget_driver->suspend(dwc->gadget);  in dwc3_suspend_gadget()
3909 		spin_lock(&dwc->lock);  in dwc3_suspend_gadget()
3915 	if (dwc->async_callbacks && dwc->gadget_driver->resume) {  in dwc3_resume_gadget()
3916 		spin_unlock(&dwc->lock);  in dwc3_resume_gadget()
3917 		dwc->gadget_driver->resume(dwc->gadget);  in dwc3_resume_gadget()
3918 		spin_lock(&dwc->lock);  in dwc3_resume_gadget()
3924 	if (!dwc->gadget_driver)  in dwc3_reset_gadget()
3927 	if (dwc->async_callbacks && dwc->gadget->speed != USB_SPEED_UNKNOWN) {  in dwc3_reset_gadget()
3928 		spin_unlock(&dwc->lock);  in dwc3_reset_gadget()
3929 		usb_gadget_udc_reset(dwc->gadget, dwc->gadget_driver);  in dwc3_reset_gadget()
3930 		spin_lock(&dwc->lock);  in dwc3_reset_gadget()
3937 	struct dwc3 *dwc = dep->dwc;  in dwc3_stop_active_transfer()
3945 	if (dep->number <= 1 && dwc->ep0state != EP0_DATA_PHASE)  in dwc3_stop_active_transfer()
3948 	if (interrupt && (dep->flags & DWC3_EP_DELAY_STOP))  in dwc3_stop_active_transfer()
3951 	if (!(dep->flags & DWC3_EP_TRANSFER_STARTED) ||  in dwc3_stop_active_transfer()
3952 	    (dep->flags & DWC3_EP_END_TRANSFER_PENDING))  in dwc3_stop_active_transfer()
3962 	if (dwc->ep0state != EP0_SETUP_PHASE && !dwc->delayed_status) {  in dwc3_stop_active_transfer()
3963 		dep->flags |= DWC3_EP_DELAY_STOP;  in dwc3_stop_active_transfer()
3977 	 * (thanks a lot Paul) and nothing bad has come out of it.  in dwc3_stop_active_transfer()
4009 		dep = dwc->eps[epnum];  in dwc3_clear_stall_all_ep()
4013 		if (!(dep->flags & DWC3_EP_STALL))  in dwc3_clear_stall_all_ep()
4016 		dep->flags &= ~DWC3_EP_STALL;  in dwc3_clear_stall_all_ep()
4027 	dwc->suspended = false;  in dwc3_gadget_disconnect_interrupt()
4031 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_disconnect_interrupt()
4036 	dwc->connected = false;  in dwc3_gadget_disconnect_interrupt()
4040 	dwc->gadget->speed = USB_SPEED_UNKNOWN;  in dwc3_gadget_disconnect_interrupt()
4041 	dwc->setup_packet_pending = false;  in dwc3_gadget_disconnect_interrupt()
4042 	dwc->gadget->wakeup_armed = false;  in dwc3_gadget_disconnect_interrupt()
4044 	usb_gadget_set_state(dwc->gadget, USB_STATE_NOTATTACHED);  in dwc3_gadget_disconnect_interrupt()
4051 	 * interrupt to set dwc->connected to FALSE.  in dwc3_gadget_disconnect_interrupt()
4053 	pm_request_idle(dwc->dev);  in dwc3_gadget_disconnect_interrupt()
4060 	dwc->suspended = false;  in dwc3_gadget_reset_interrupt()
4069 	dwc->connected = false;  in dwc3_gadget_reset_interrupt()
4098 		if (dwc->setup_packet_pending)  in dwc3_gadget_reset_interrupt()
4113 	 * Section 4.1.2 Table 4-2, it states that during a USB reset, the SW  in dwc3_gadget_reset_interrupt()
4118 	dwc->connected = true;  in dwc3_gadget_reset_interrupt()
4120 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_reset_interrupt()
4123 	dwc->test_mode = false;  in dwc3_gadget_reset_interrupt()
4124 	dwc->gadget->wakeup_armed = false;  in dwc3_gadget_reset_interrupt()
4129 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in dwc3_gadget_reset_interrupt()
4131 	dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in dwc3_gadget_reset_interrupt()
4142 	if (!dwc->softconnect)  in dwc3_gadget_conndone_interrupt()
4145 	reg = dwc3_readl(dwc->regs, DWC3_DSTS);  in dwc3_gadget_conndone_interrupt()
4147 	dwc->speed = speed;  in dwc3_gadget_conndone_interrupt()
4152 	dwc->gadget->ssp_rate = USB_SSP_GEN_UNKNOWN;  in dwc3_gadget_conndone_interrupt()
4166 		dwc->gadget->ep0->maxpacket = 512;  in dwc3_gadget_conndone_interrupt()
4167 		dwc->gadget->speed = USB_SPEED_SUPER_PLUS;  in dwc3_gadget_conndone_interrupt()
4170 			dwc->gadget->ssp_rate = USB_SSP_GEN_2x2;  in dwc3_gadget_conndone_interrupt()
4172 			dwc->gadget->ssp_rate = USB_SSP_GEN_2x1;  in dwc3_gadget_conndone_interrupt()
4192 		dwc->gadget->ep0->maxpacket = 512;  in dwc3_gadget_conndone_interrupt()
4193 		dwc->gadget->speed = USB_SPEED_SUPER;  in dwc3_gadget_conndone_interrupt()
4196 			dwc->gadget->speed = USB_SPEED_SUPER_PLUS;  in dwc3_gadget_conndone_interrupt()
4197 			dwc->gadget->ssp_rate = USB_SSP_GEN_1x2;  in dwc3_gadget_conndone_interrupt()
4202 		dwc->gadget->ep0->maxpacket = 64;  in dwc3_gadget_conndone_interrupt()
4203 		dwc->gadget->speed = USB_SPEED_HIGH;  in dwc3_gadget_conndone_interrupt()
4207 		dwc->gadget->ep0->maxpacket = 64;  in dwc3_gadget_conndone_interrupt()
4208 		dwc->gadget->speed = USB_SPEED_FULL;  in dwc3_gadget_conndone_interrupt()
4212 	dwc->eps[1]->endpoint.maxpacket = dwc->gadget->ep0->maxpacket;  in dwc3_gadget_conndone_interrupt()
4214 	/* Enable USB2 LPM Capability */  in dwc3_gadget_conndone_interrupt()
4217 	    !dwc->usb2_gadget_lpm_disable &&  in dwc3_gadget_conndone_interrupt()
4220 		reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in dwc3_gadget_conndone_interrupt()
4222 		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()
4227 		reg |= DWC3_DCTL_HIRD_THRES(dwc->hird_threshold |  in dwc3_gadget_conndone_interrupt()
4228 					    (dwc->is_utmi_l1_suspend << 4));  in dwc3_gadget_conndone_interrupt()
4231 		 * When dwc3 revisions >= 2.40a, LPM Erratum is enabled and  in dwc3_gadget_conndone_interrupt()
4233 		 * BESL value in the LPM token is less than or equal to LPM  in dwc3_gadget_conndone_interrupt()
4236 		WARN_ONCE(DWC3_VER_IS_PRIOR(DWC3, 240A) && dwc->has_lpm_erratum,  in dwc3_gadget_conndone_interrupt()
4237 				"LPM Erratum not available on dwc3 revisions < 2.40a\n");  in dwc3_gadget_conndone_interrupt()
4239 		if (dwc->has_lpm_erratum && !DWC3_VER_IS_PRIOR(DWC3, 240A)) {  in dwc3_gadget_conndone_interrupt()
4241 			reg |= DWC3_DCTL_NYET_THRES(dwc->lpm_nyet_threshold);  in dwc3_gadget_conndone_interrupt()
4246 		if (dwc->usb2_gadget_lpm_disable) {  in dwc3_gadget_conndone_interrupt()
4247 			reg = dwc3_readl(dwc->regs, DWC3_DCFG);  in dwc3_gadget_conndone_interrupt()
4249 			dwc3_writel(dwc->regs, DWC3_DCFG, reg);  in dwc3_gadget_conndone_interrupt()
4252 		reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_conndone_interrupt()
4257 	dep = dwc->eps[0];  in dwc3_gadget_conndone_interrupt()
4260 		dev_err(dwc->dev, "failed to enable %s\n", dep->name);  in dwc3_gadget_conndone_interrupt()
4264 	dep = dwc->eps[1];  in dwc3_gadget_conndone_interrupt()
4267 		dev_err(dwc->dev, "failed to enable %s\n", dep->name);  in dwc3_gadget_conndone_interrupt()
4282 	dwc->suspended = false;  in dwc3_gadget_wakeup_interrupt()
4289 	if (dwc->async_callbacks && dwc->gadget_driver->resume) {  in dwc3_gadget_wakeup_interrupt()
4290 		spin_unlock(&dwc->lock);  in dwc3_gadget_wakeup_interrupt()
4291 		dwc->gadget_driver->resume(dwc->gadget);  in dwc3_gadget_wakeup_interrupt()
4292 		spin_lock(&dwc->lock);  in dwc3_gadget_wakeup_interrupt()
4295 	dwc->link_state = evtinfo & DWC3_LINK_STATE_MASK;  in dwc3_gadget_wakeup_interrupt()
4307 	 * host-initiated U3 exit.  in dwc3_gadget_linksts_change_interrupt()
4318 	 * STAR#9000570034 RTL: SS Resume event generated in non-Hibernation  in dwc3_gadget_linksts_change_interrupt()
4321 	pwropt = DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1);  in dwc3_gadget_linksts_change_interrupt()
4324 		if ((dwc->link_state == DWC3_LINK_STATE_U3) &&  in dwc3_gadget_linksts_change_interrupt()
4345 	 * STAR#9000446952: RTL: Device SS : if U1/U2 ->U0 takes >128us  in dwc3_gadget_linksts_change_interrupt()
4353 			switch (dwc->link_state) {  in dwc3_gadget_linksts_change_interrupt()
4356 				reg = dwc3_readl(dwc->regs, DWC3_DCTL);  in dwc3_gadget_linksts_change_interrupt()
4362 				if (!dwc->u1u2)  in dwc3_gadget_linksts_change_interrupt()
4363 					dwc->u1u2 = reg & u1u2;  in dwc3_gadget_linksts_change_interrupt()
4378 		if (dwc->gadget->wakeup_armed) {  in dwc3_gadget_linksts_change_interrupt()
4381 			dwc->suspended = false;  in dwc3_gadget_linksts_change_interrupt()
4385 		if (dwc->speed == USB_SPEED_SUPER)  in dwc3_gadget_linksts_change_interrupt()
4400 	dwc->link_state = next;  in dwc3_gadget_linksts_change_interrupt()
4408 	if (!dwc->suspended && next == DWC3_LINK_STATE_U3) {  in dwc3_gadget_suspend_interrupt()
4409 		dwc->suspended = true;  in dwc3_gadget_suspend_interrupt()
4413 	dwc->link_state = next;  in dwc3_gadget_suspend_interrupt()
4419 	switch (event->type) {  in dwc3_gadget_interrupt()
4430 		dwc3_gadget_wakeup_interrupt(dwc, event->event_info);  in dwc3_gadget_interrupt()
4433 		dev_WARN_ONCE(dwc->dev, true, "unexpected hibernation event\n");  in dwc3_gadget_interrupt()
4436 		dwc3_gadget_linksts_change_interrupt(dwc, event->event_info);  in dwc3_gadget_interrupt()
4441 			dwc3_gadget_suspend_interrupt(dwc, event->event_info);  in dwc3_gadget_interrupt()
4449 		dev_WARN(dwc->dev, "UNKNOWN IRQ %d\n", event->type);  in dwc3_gadget_interrupt()
4456 	trace_dwc3_event(event->raw, dwc);  in dwc3_process_event_entry()
4458 	if (!event->type.is_devspec)  in dwc3_process_event_entry()
4459 		dwc3_endpoint_interrupt(dwc, &event->depevt);  in dwc3_process_event_entry()
4460 	else if (event->type.type == DWC3_EVENT_TYPE_DEV)  in dwc3_process_event_entry()
4461 		dwc3_gadget_interrupt(dwc, &event->devt);  in dwc3_process_event_entry()
4463 		dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw);  in dwc3_process_event_entry()
4468 	struct dwc3 *dwc = evt->dwc;  in dwc3_process_event_buf()
4472 	left = evt->count;  in dwc3_process_event_buf()
4474 	if (!(evt->flags & DWC3_EVENT_PENDING))  in dwc3_process_event_buf()
4480 		event.raw = *(u32 *) (evt->cache + evt->lpos);  in dwc3_process_event_buf()
4487 		 * entry which has 12 bytes which is a regular entry  in dwc3_process_event_buf()
4493 		evt->lpos = (evt->lpos + 4) % evt->length;  in dwc3_process_event_buf()
4494 		left -= 4;  in dwc3_process_event_buf()
4497 	evt->count = 0;  in dwc3_process_event_buf()
4501 	dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0),  in dwc3_process_event_buf()
4502 		    DWC3_GEVNTSIZ_SIZE(evt->length));  in dwc3_process_event_buf()
4504 	evt->flags &= ~DWC3_EVENT_PENDING;  in dwc3_process_event_buf()
4511 	if (dwc->imod_interval) {  in dwc3_process_event_buf()
4512 		dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), DWC3_GEVNTCOUNT_EHB);  in dwc3_process_event_buf()
4513 		dwc3_writel(dwc->regs, DWC3_DEV_IMOD(0), dwc->imod_interval);  in dwc3_process_event_buf()
4522 	struct dwc3 *dwc = evt->dwc;  in dwc3_thread_interrupt()
4527 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_thread_interrupt()
4529 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_thread_interrupt()
4537 	struct dwc3 *dwc = evt->dwc;  in dwc3_check_event_buf()
4541 	if (pm_runtime_suspended(dwc->dev)) {  in dwc3_check_event_buf()
4542 		dwc->pending_events = true;  in dwc3_check_event_buf()
4548 		pm_runtime_get(dwc->dev);  in dwc3_check_event_buf()
4549 		disable_irq_nosync(dwc->irq_gadget);  in dwc3_check_event_buf()
4554 	 * With PCIe legacy interrupt, test shows that top-half irq handler can  in dwc3_check_event_buf()
4555 	 * be called again after HW interrupt deassertion. Check if bottom-half  in dwc3_check_event_buf()
4559 	if (evt->flags & DWC3_EVENT_PENDING)  in dwc3_check_event_buf()
4562 	count = dwc3_readl(dwc->regs, DWC3_GEVNTCOUNT(0));  in dwc3_check_event_buf()
4567 	evt->count = count;  in dwc3_check_event_buf()
4568 	evt->flags |= DWC3_EVENT_PENDING;  in dwc3_check_event_buf()
4571 	dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0),  in dwc3_check_event_buf()
4572 		    DWC3_GEVNTSIZ_INTMASK | DWC3_GEVNTSIZ_SIZE(evt->length));  in dwc3_check_event_buf()
4574 	amount = min(count, evt->length - evt->lpos);  in dwc3_check_event_buf()
4575 	memcpy(evt->cache + evt->lpos, evt->buf + evt->lpos, amount);  in dwc3_check_event_buf()
4578 		memcpy(evt->cache, evt->buf, count - amount);  in dwc3_check_event_buf()
4580 	dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), count);  in dwc3_check_event_buf()
4594 	struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);  in dwc3_gadget_get_irq()
4601 	if (irq == -EPROBE_DEFER)  in dwc3_gadget_get_irq()
4608 	if (irq == -EPROBE_DEFER)  in dwc3_gadget_get_irq()
4625  * dwc3_gadget_init - initializes gadget related registers
4642 	dwc->irq_gadget = irq;  in dwc3_gadget_init()
4644 	dwc->ep0_trb = dma_alloc_coherent(dwc->sysdev,  in dwc3_gadget_init()
4645 					  sizeof(*dwc->ep0_trb) * 2,  in dwc3_gadget_init()
4646 					  &dwc->ep0_trb_addr, GFP_KERNEL);  in dwc3_gadget_init()
4647 	if (!dwc->ep0_trb) {  in dwc3_gadget_init()
4648 		dev_err(dwc->dev, "failed to allocate ep0 trb\n");  in dwc3_gadget_init()
4649 		ret = -ENOMEM;  in dwc3_gadget_init()
4653 	dwc->setup_buf = kzalloc(DWC3_EP0_SETUP_SIZE, GFP_KERNEL);  in dwc3_gadget_init()
4654 	if (!dwc->setup_buf) {  in dwc3_gadget_init()
4655 		ret = -ENOMEM;  in dwc3_gadget_init()
4659 	dwc->bounce = dma_alloc_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE,  in dwc3_gadget_init()
4660 			&dwc->bounce_addr, GFP_KERNEL);  in dwc3_gadget_init()
4661 	if (!dwc->bounce) {  in dwc3_gadget_init()
4662 		ret = -ENOMEM;  in dwc3_gadget_init()
4666 	init_completion(&dwc->ep0_in_setup);  in dwc3_gadget_init()
4667 	dwc->gadget = kzalloc(sizeof(struct usb_gadget), GFP_KERNEL);  in dwc3_gadget_init()
4668 	if (!dwc->gadget) {  in dwc3_gadget_init()
4669 		ret = -ENOMEM;  in dwc3_gadget_init()
4674 	usb_initialize_gadget(dwc->dev, dwc->gadget, dwc_gadget_release);  in dwc3_gadget_init()
4675 	dev				= &dwc->gadget->dev;  in dwc3_gadget_init()
4676 	dev->platform_data		= dwc;  in dwc3_gadget_init()
4677 	dwc->gadget->ops		= &dwc3_gadget_ops;  in dwc3_gadget_init()
4678 	dwc->gadget->speed		= USB_SPEED_UNKNOWN;  in dwc3_gadget_init()
4679 	dwc->gadget->ssp_rate		= USB_SSP_GEN_UNKNOWN;  in dwc3_gadget_init()
4680 	dwc->gadget->sg_supported	= true;  in dwc3_gadget_init()
4681 	dwc->gadget->name		= "dwc3-gadget";  in dwc3_gadget_init()
4682 	dwc->gadget->lpm_capable	= !dwc->usb2_gadget_lpm_disable;  in dwc3_gadget_init()
4683 	dwc->gadget->wakeup_capable	= true;  in dwc3_gadget_init()
4699 	 * composite.c that we are USB 2.0 + LPM ECN.  in dwc3_gadget_init()
4702 	    !dwc->dis_metastability_quirk)  in dwc3_gadget_init()
4703 		dev_info(dwc->dev, "changing max_speed on rev %08x\n",  in dwc3_gadget_init()
4704 				dwc->revision);  in dwc3_gadget_init()
4706 	dwc->gadget->max_speed		= dwc->maximum_speed;  in dwc3_gadget_init()
4707 	dwc->gadget->max_ssp_rate	= dwc->max_ssp_rate;  in dwc3_gadget_init()
4714 	ret = dwc3_gadget_init_endpoints(dwc, dwc->num_eps);  in dwc3_gadget_init()
4718 	ret = usb_add_gadget(dwc->gadget);  in dwc3_gadget_init()
4720 		dev_err(dwc->dev, "failed to add gadget\n");  in dwc3_gadget_init()
4724 	if (DWC3_IP_IS(DWC32) && dwc->maximum_speed == USB_SPEED_SUPER_PLUS)  in dwc3_gadget_init()
4725 		dwc3_gadget_set_ssp_rate(dwc->gadget, dwc->max_ssp_rate);  in dwc3_gadget_init()
4727 		dwc3_gadget_set_speed(dwc->gadget, dwc->maximum_speed);  in dwc3_gadget_init()
4730 	if (dwc->sys_wakeup)  in dwc3_gadget_init()
4731 		device_wakeup_disable(dwc->sysdev);  in dwc3_gadget_init()
4738 	usb_put_gadget(dwc->gadget);  in dwc3_gadget_init()
4739 	dwc->gadget = NULL;  in dwc3_gadget_init()
4741 	dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce,  in dwc3_gadget_init()
4742 			dwc->bounce_addr);  in dwc3_gadget_init()
4745 	kfree(dwc->setup_buf);  in dwc3_gadget_init()
4748 	dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2,  in dwc3_gadget_init()
4749 			dwc->ep0_trb, dwc->ep0_trb_addr);  in dwc3_gadget_init()
4755 /* -------------------------------------------------------------------------- */
4759 	if (!dwc->gadget)  in dwc3_gadget_exit()
4763 	usb_del_gadget(dwc->gadget);  in dwc3_gadget_exit()
4765 	usb_put_gadget(dwc->gadget);  in dwc3_gadget_exit()
4766 	dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce,  in dwc3_gadget_exit()
4767 			  dwc->bounce_addr);  in dwc3_gadget_exit()
4768 	kfree(dwc->setup_buf);  in dwc3_gadget_exit()
4769 	dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2,  in dwc3_gadget_exit()
4770 			  dwc->ep0_trb, dwc->ep0_trb_addr);  in dwc3_gadget_exit()
4782 	spin_lock_irqsave(&dwc->lock, flags);  in dwc3_gadget_suspend()
4783 	if (dwc->gadget_driver)  in dwc3_gadget_suspend()
4785 	spin_unlock_irqrestore(&dwc->lock, flags);  in dwc3_gadget_suspend()
4795 	if (dwc->softconnect)  in dwc3_gadget_suspend()
4803 	if (!dwc->gadget_driver || !dwc->softconnect)  in dwc3_gadget_resume()