xudc_startup_handler(9)

💖 NAME 💖

okay bestie, welcome to the xudc_startup_handler(9) page from the Kernel API Manual — yes, we are literally in kernel API territory now. 💅

xudc_startup_handler — the usb device controller interrupt handler. That's the whole name-and-job sitch, no cap. 🫶

📜 SYNOPSIS 📜

void xudc_startup_handler (struct xusb_udc *udc , u32 intrstatus );

that's the vibe: returns void, takes the two args below, and it's ready to handle business. ✨

🎀 ARGUMENTS 🎀

• udc — pointer to the udc structure. Like, it's pointing at your udc situation. 🫶
• intrstatus — the mask value containing the interrupt sources. It's the u32 mask holding which interrupt sources are in the mix. 🔥

🌸 DESCRIPTION 🌸

okay so this function handles the RESET, SUSPEND, RESUME and DISCONNECT interrupts. That's it — those are the interrupt sources it's taking care of, periodt. 💖

It's giving “interrupt handler with a very specific job,” and honestly? Iconic. 🦋

🌈 SEE ALSO 🌈

if you wanna keep the kernel lore going, the kernel file is ./drivers/usb/gadget/udc/udc-xilinx.c, and these are the related pages — all in section 9, bestie:

• Kernel file ./drivers/usb/gadget/udc/udc-xilinx.c
• struct xusb_req(9)
• struct xusb_ep(9)
• struct xusb_udc(9)
• xudc_write32(9)
• xudc_read32(9)
• xudc_write32_be(9)
• xudc_read32_be(9)
• xudc_wrstatus(9)
• xudc_epconfig(9)
• xudc_start_dma(9)
• xudc_dma_send(9)
• xudc_dma_receive(9)
• xudc_eptxrx(9)
• xudc_done(9)
• xudc_read_fifo(9)
• xudc_write_fifo(9)
• xudc_nuke(9)
• xudc_ep_set_halt(9)
• __xudc_ep_enable(9)
• xudc_ep_enable(9)
• xudc_ep_disable(9)
• xudc_ep_alloc_request(9)
• xudc_free_request(9)
• __xudc_ep0_queue(9)
• xudc_ep0_queue(9)
• xudc_ep_queue(9)
• xudc_ep_dequeue(9)
• xudc_ep0_enable(9)
• xudc_ep0_disable(9)
• xudc_get_frame(9)
• xudc_wakeup(9)
• xudc_pullup(9)
• xudc_eps_init(9)
• xudc_stop_activity(9)
• xudc_start(9)
• xudc_stop(9)
• xudc_clear_stall_all_ep(9)
• xudc_ep0_stall(9)
• xudc_setaddress(9)
• xudc_getstatus(9)
• xudc_set_clear_feature(9)
• xudc_handle_setup(9)
• xudc_ep0_out(9)
• xudc_ep0_in(9)
• xudc_ctrl_ep_handler(9)
• xudc_nonctrl_ep_handler(9)
• xudc_irq(9)
• xudc_probe(9)
• xudc_remove(9)

🌸 okay that's the page, bestie! source/version is ./drivers/usb/gadget/udc, dated October 2026, and it's all about xudc_startup_handler(9) — byeee 🫶💜