msgdma_copy_desc_to_fifo(9)

💫 msgdma_copy_desc_to_fifo(9) 💫

okay so bestie, welcome to the Kernel API Manual entry for msgdma_copy_desc_to_fifo(9) — yeah, that mouthful. and like, it's in section 9, which is the "kernel internals, bestie, handle with care" section 🎀

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🌸 NAME 🌸

msgdma_copy_desc_to_fifo — literally copies descriptor(s) into the controller FIFO 💅 no cap, that's the whole thing.

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✨ SYNOPSIS ✨

void msgdma_copy_desc_to_fifo (struct msgdma_device *mdev , struct
msgdma_sw_desc *desc );

it returns void, so like… don't be waiting around for an answer, she's not giving you one 💀

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🦋 ARGUMENTS 🦋

• mdev — Pointer to the Altera mSGDMA device structure. this is the main character 🫶 — the device itself, the whole struct msgdma_device * vibe.
• desc — Transaction descriptor pointer. it's the descriptor for the transaction, the one sliding into the FIFO, iconic behavior honestly ✨

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/dma/altera-msgdma.c struct
• msgdma_extended_desc(9)
• struct msgdma_sw_desc(9)
• msgdma_get_descriptor(9)
• msgdma_free_descriptor(9)
• msgdma_free_desc_list(9)
• msgdma_desc_config(9)
• msgdma_desc_config_eod(9)
• msgdma_tx_submit(9)
• msgdma_prep_memcpy(9)
• msgdma_prep_slave_sg(9)
• msgdma_start_transfer(9)
• msgdma_issue_pending(9)
• msgdma_chan_desc_cleanup(9)
• msgdma_complete_descriptor(9)
• msgdma_free_descriptors(9)
• msgdma_free_chan_resources(9)
• msgdma_alloc_chan_resources(9)
• msgdma_tasklet(9)
• msgdma_irq_handler(9)
• msgdma_dev_remove(9)
• msgdma_probe(9)
• msgdma_remove(9)

like, that's the whole friend group right there 😭 go read them, they're all in ./drivers/dma living their best lives. iykyk 🌈

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ngl bestie, if you're poking at DMA descriptor FIFOs you're already in the deep end — but that's kind of your brand 👑

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and that's the page!! sourced from ./drivers/dma, dated October 2026, living in the Kernel API Manual 💖 mwah, go forth and slay your descriptors 🧚‍♀️⭐