ep93xx_dma_tx_submit(9)

💖 ep93xx_dma_tx_submit(9) — Kernel API Manual 💖

okay so bestie, welcome to the Kernel API Manual page for ep93xx_dma_tx_submit — literally the function that gets your prepared descriptor(s) set to be executed. The vibe is very “the queue is queuing,” and yes, we’re covering every lil detail. ✨

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🌸 NAME 🌸

ep93xx_dma_tx_submit — sets the prepared descriptor(s) to be executed. That’s the whole assignment, no cap. 💅

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🦋 SYNOPSIS 🦋

dma_cookie_t ep93xx_dma_tx_submit (struct dma_async_tx_descriptor *tx );

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💅 ARGUMENTS 💅

• tx — the descriptor to be executed. Like, the actual descriptor being sent through, bestie. 🫶

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🔥 DESCRIPTION 🔥

Okay so here’s the tea: this function will execute the given descriptor on the hardware. If the hardware is busy, it queues the descriptor to be executed later on. Then it returns a cookie, and that cookie can be used to poll the status of the descriptor. Periodt. 🍓

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🌈 SEE ALSO 🌈

Go peek at the Kernel file ./drivers/dma/ep93xx_dma.c and these iconic friends:

• struct ep93xx_dma_desc(9)
• struct ep93xx_dma_chan(9)
• struct ep93xx_dma_engine(9)
• ep93xx_dma_set_active(9)
• ep93xx_dma_advance_active(9)
• ep93xx_dma_advance_work(9)
• ep93xx_dma_alloc_chan_resources(9)
• ep93xx_dma_free_chan_resources(9)
• ep93xx_dma_prep_dma_memcpy(9)
• ep93xx_dma_prep_slave_sg(9)
• ep93xx_dma_prep_dma_cyclic(9)
• ep93xx_dma_synchronize(9)
• ep93xx_dma_terminate_all(9)
• ep93xx_dma_tx_status(9)
• ep93xx_dma_issue_pending(9)

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byeee 🫶💜 mwah! This page’s footer energy is: source/version ./drivers/dma, date October 2026, and the manual page name ep93xx_dma_tx_submit(9). ✨