bcm63xx_fifo_setup(9)

💅 bcm63xx_fifo_setup(9) 💅

okay so bestie, this is a page straight out of the Kernel API Manual — the bcm63xx_fifo_setup(9) entry — and it's basically the little function that gives your FIFOs a whole glow-up. let's get into it 🎀

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🌸 NAME 🌸

bcm63xx_fifo_setup — (Re)initialize FIFO boundaries and settings. yes, the parentheses are doing real work there, it re-inits baby ✨

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⭐ SYNOPSIS ⭐

void bcm63xx_fifo_setup (struct bcm63xx_udc *udc );

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🫶 ARGUMENTS 🫶

• udc — a reference to the device controller. that's your main character right there, she's the one holding everything together 👑

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💖 DESCRIPTION 💖

so here's the tea: these parameters depend on the USB link speed. like, the settings literally change depending on how fast the link is going — no cap 🌈

and the settings? they're per-IUDMA-channel-pair. one set per pair, that's the vibe check, respect the pairing 💫

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🔥 SEE ALSO 🔥

the group chat is huge, so buckle up bestie, everyone's here 💀

• the kernel file itself: ./drivers/usb/gadget/udc/bcm63xx_udc.c — literally where the magic lives
• struct iudma_ch_cfg(9) — the config struct, iconic
• struct iudma_ch(9) — the channel struct, also iconic
• struct bcm63xx_ep(9) — endpoint struct, she's giving structure
• struct bcm63xx_req(9) — request struct, obsessed
• struct bcm63xx_udc(9) — the controller struct, main character energy
• bcm63xx_ep_dma_select(9) — picks the DMA, slay
• bcm63xx_set_stall(9) — stall time 😭
• bcm63xx_fifo_reset_ep(9) — reset the endpoint's FIFO
• bcm63xx_fifo_reset(9) — reset the FIFO, the original resetter
• bcm63xx_ep_init(9) — endpoint init hours
• bcm63xx_ep_setup(9) — endpoint setup, we love a setup
• iudma_write(9) — writing, as one does
• iudma_read(9) — reading, the sequel
• iudma_reset_channel(9) — channel reset, fresh start 🦋
• iudma_init_channel(9) — channel init
• iudma_init(9) — init the whole thing
• iudma_uninit(9) — un-init, the reverse glow-up
• bcm63xx_set_ctrl_irqs(9) — control interrupt setup
• bcm63xx_select_phy_mode(9) — choosing the PHY mode
• bcm63xx_select_pullup(9) — pullup selection, very on brand
• bcm63xx_uninit_udc_hw(9) — teardown time
• bcm63xx_init_udc_hw(9) — hardware init, the prequel
• bcm63xx_ep_enable(9) — enabling an endpoint ✨
• bcm63xx_ep_disable(9) — disabling one, bye bestie
• bcm63xx_udc_alloc_request(9) — allocate a request
• bcm63xx_udc_free_request(9) — free that request
• bcm63xx_udc_queue(9) — queue it up
• bcm63xx_udc_dequeue(9) — take it back out
• bcm63xx_udc_set_halt(9) — halt vibes
• bcm63xx_udc_set_wedge(9) — wedge vibes 💀
• bcm63xx_ep0_setup_callback(9) — ep0 setup callback
• bcm63xx_ep0_spoof_set_cfg(9) — spoofing the config, sneaky
• bcm63xx_ep0_spoof_set_iface(9) — spoofing the interface, equally sneaky
• bcm63xx_ep0_map_write(9) — map a write
• bcm63xx_ep0_complete(9) — completion, we did it 🎉
• bcm63xx_ep0_nuke_reply(9) — nuke the reply (dramatic but valid)
• bcm63xx_ep0_read_complete(9) — read completed, periodt
• bcm63xx_ep0_internal_request(9) — internal request, private business
• bcm63xx_ep0_do_setup(9) — do the setup
• bcm63xx_ep0_do_idle(9) — do the idle, we love a rest
• bcm63xx_ep0_one_round(9) — one round only
• bcm63xx_ep0_process(9) — process it all
• bcm63xx_udc_get_frame(9) — get that frame number
• bcm63xx_udc_pullup(9) — pullup control
• bcm63xx_udc_start(9) — start her up 🔥
• bcm63xx_udc_stop(9) — stop her, sadly
• bcm63xx_update_cfg_iface(9) — update config/interface
• bcm63xx_update_link_speed(9) — update link speed (remember, this page cares about that!)
• bcm63xx_update_wedge(9) — update the wedge
• bcm63xx_udc_ctrl_isr(9) — the control interrupt handler
• bcm63xx_udc_data_isr(9) — the data interrupt handler
• bcm63xx_udc_init_debugfs(9) — debugfs in
• bcm63xx_udc_cleanup_debugfs(9) — debugfs out
• bcm63xx_udc_probe(9) — probe, the classic
• bcm63xx_udc_remove(9) — remove, the farewell 👋

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and that's the whole page bestie, you ate that 💅✨

🎀 little sign-off for the credits girlies: this one comes from the source/version line in ./drivers/usb/gadget/udc, and it's dated October 2026 — with the page itself being bcm63xx_fifo_setup(9). mwah 💖