STRUCT DWC3_EP(9)

💖 NAME 💖

okay bestie, welcome to the struct dwc3_ep(9) page from the Kernel API Manual ✨ This is the device side endpoint representation — literally the struct vibe for a DWC3 endpoint, no cap 🫶

✨ SYNOPSIS ✨

Here's the whole struct, copied exactly because we do not mess with code, periodt:

       struct dwc3_ep {
           struct usb_ep           endpoint;
           struct delayed_work     nostream_work;
           struct list_head        cancelled_list;
           struct list_head        pending_list;
           struct list_head        started_list;
           struct dwc3_trb         *trb_pool;
           dma_addr_t trb_pool_dma;
           struct dwc3             *dwc;
           u32 saved_state;
           unsigned int            flags;
         #define DWC3_EP_ENABLED                 BIT(0);
         #define DWC3_EP_STALL                   BIT(1);
         #define DWC3_EP_WEDGE                   BIT(2);
         #define DWC3_EP_TRANSFER_STARTED        BIT(3);
         #define DWC3_EP_END_TRANSFER_PENDING    BIT(4);
         #define DWC3_EP_PENDING_REQUEST         BIT(5);
         #define DWC3_EP_DELAY_START             BIT(6);
         #define DWC3_EP_WAIT_TRANSFER_COMPLETE  BIT(7);
         #define DWC3_EP_IGNORE_NEXT_NOSTREAM    BIT(8);
         #define DWC3_EP_FORCE_RESTART_STREAM    BIT(9);
         #define DWC3_EP_STREAM_PRIMED           BIT(10);
         #define DWC3_EP_PENDING_CLEAR_STALL     BIT(11);
         #define DWC3_EP_TXFIFO_RESIZED          BIT(12);
         #define DWC3_EP_DELAY_STOP             BIT(13);
         #define DWC3_EP_RESOURCE_ALLOCATED      BIT(14);
         #define DWC3_EP0_DIR_IN                 BIT(31);
           u8 trb_enqueue;
           u8 trb_dequeue;
           u8 number;
           u8 type;
           u8 resource_index;
           u32 frame_number;
           u32 interval;
           char name[20];
           unsigned direction:1;
           unsigned stream_capable:1;
           u8 combo_num;
           int start_cmd_status;
        };

🎀 Members 🎀

• endpoint — usb endpoint 💅
• nostream_work — work for handling bulk NoStream
• cancelled_list — list of cancelled requests for this endpoint
• pending_list — list of pending requests for this endpoint
• started_list — list of started requests on this endpoint
• trb_pool — array of transaction buffers
• trb_pool_dma — dma address of trb_pool
• dwc — pointer to DWC controller
• saved_state — ep state saved during hibernation
• flags — endpoint flags (wedged, stalled, ...)
• trb_enqueue — enqueue 'pointer' into TRB array 🦋
• trb_dequeue — dequeue 'pointer' into TRB array 🦋
• number — endpoint number (1 - 15)
• type — set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK ⭐
• resource_index — Resource transfer index
• frame_number — set to the frame number we want this transfer to start (ISOC) 🌸
• interval — the interval on which the ISOC transfer is started 🌸
• name — a human readable name e.g. ep1out-bulk 🎀
• direction — true for TX, false for RX
• stream_capable — true when streams are enabled
• combo_num — the test combination BIT[15:14] of the frame number to test isochronous START TRANSFER command failure workaround 😭
• start_cmd_status — the status of testing START TRANSFER command with combo_num = 'b00 💀

🔥 SEE ALSO 🔥

Kernel file ./drivers/usb/dwc3/core.h is the plug, and these are the adjacent icons you might wanna peek at, iykyk:

• struct dwc3_event_buffer(9)
• struct dwc3_trb(9)
• struct dwc3_hwparams(9)
• struct dwc3_request(9)
• struct dwc3_glue_ops(9)
• struct dwc3(9)
• struct dwc3_event_depevt(9)
• struct dwc3_event_devt(9)
• struct dwc3_event_gevt(9)
• union dwc3_event(9)
• struct dwc3_gadget_ep_cmd_params(9)
• dwc3_mdwidth(9)

and that's the whole page, bestie 🫶 this struct dwc3_ep(9) manual comes from ./drivers/usb/dwc3, dated October 2026 — slay, bye 💅✨