zynqmp_dma_c...g_sg_ll_desc(9)

💅 zynqmp_dma_c...g_sg_ll_desc(9) — bestie edition 🎀

okay so this is a page from the Kernel API Manual, and honestly? it's a little gem. we're configuring a linked list descriptor today and you're gonna slay it, i promise 🫶

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✨ NAME ✨

zynqmp_dma_config_sg_ll_desc — Configure the linked list descriptor 💫

like... that's the whole vibe. you're setting up the hardware's little to-do list entry so it knows where to grab stuff and where to yeet it. iconic behavior honestly 👑

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🌸 SYNOPSIS 🌸

void zynqmp_dma_config_sg_ll_desc (struct zynqmp_dma_chan *chan,
                                   struct zynqmp_dma_desc_ll *sdesc,
                                   dma_addr_t src,
                                   dma_addr_t dst,
                                   size_t len,
                                   struct zynqmp_dma_desc_ll *prev);

not me putting the params on their own lines so you can actually read them 😭 she returns void btw, so like, no return value to obsess over. it just does the thing. periodt.

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🦋 ARGUMENTS 🦋

six parameters, six little besties, let's meet them 💖

• chan — ZynqMP DMA channel pointer. this is the main character — the whole channel we're working in 🌈
• sdesc — Hw descriptor pointer. the actual hardware descriptor you're about to dress up ✨
• src — Source buffer address. where the data's coming from, the origin story 💫
• dst — Destination buffer address. where it's headed, the glow-up destination 🎀
• len — Transfer length. how much data we're moving, no cap 📏
• prev — Previous hw descriptor pointer. the one that came before — linked list realness, iykyk 🔗

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👑 SEE ALSO 👑

these are all from the Kernel file ./drivers/dma/xilinx/zynqmp_dma.c — the whole friend group fr fr 💜

• struct zynqmp_dma_desc_ll(9)
• struct zynqmp_dma_desc_sw(9)
• struct zynqmp_dma_chan(9)
• struct zynqmp_dma_device(9)
• zynqmp_dma_update_desc_to_ctrlr(9)
• zynqmp_dma_desc_config_eod(9)
• zynqmp_dma_init(9)
• zynqmp_dma_tx_submit(9)
• zynqmp_dma_get_descriptor(9)
• zynqmp_dma_free_descriptor(9)
• zynqmp_dma_free_desc_list(9)
• zynqmp_dma_alloc_chan_resources(9)
• zynqmp_dma_start(9)
• zynqmp_dma_handle_ovfl_int(9)
• zynqmp_dma_device_config(9)
• zynqmp_dma_start_transfer(9)
• zynqmp_dma_chan_desc_cleanup(9)
• zynqmp_dma_complete_descriptor(9)
• zynqmp_dma_issue_pending(9)
• zynqmp_dma_free_descriptors(9)
• zynqmp_dma_free_chan_resources(9)
• zynqmp_dma_reset(9)
• zynqmp_dma_irq_handler(9)
• zynqmp_dma_do_tasklet(9)
• zynqmp_dma_device_terminate_all(9)
• zynqmp_dma_synchronize(9)
• zynqmp_dma_prep_memcpy(9)
• zynqmp_dma_chan_remove(9)
• zynqmp_dma_chan_probe(9)
• of_zynqmp_dma_xlate(9)
• zynqmp_dma_suspend(9)
• zynqmp_dma_resume(9)
• zynqmp_dma_runtime_suspend(9)
• zynqmp_dma_runtime_resume(9)
• zynqmp_dma_probe(9)
• zynqmp_dma_remove(9)

like, that's the entire extended universe right there 🔥 go read them, i'm literally begging 🙈

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okay bestie, that's the whole page 🍓 huge shoutout to the source at ./drivers/dma/xilinx, dated October 2026, and yeah — this was zynqmp_dma_c...g_sg_ll_desc(9) from the Kernel API Manual. mwah, go configure some descriptors, you've got this 💅✨