bam_tx_status(9)

💅 bam_tx_status(9) — a Kernel API Manual moment

Okay so bestie, we're in the kernel API manual, section 9, and today's main character is bam_tx_status. Yes it's a whole function. Yes it's iconic. Let's get into it 🎀

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✨ NAME ✨

bam_tx_status — returns status of transaction 💫

Like, that's literally the whole gig. It tells you how your DMA transaction is doing. Vibe check, but for transfers 🔥

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🌸 SYNOPSIS 🌸

enum dma_status bam_tx_status (struct dma_chan *chan , dma_cookie_t
cookie , struct dma_tx_state *txstate );

There it is, copy it exactly, don't @ me 🫶

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🦋 ARGUMENTS 🦋

• chan — dma channel 💖 the actual channel we're asking about, bestie
• cookie — transaction cookie 🍪 your lil ticket that identifies which transaction you mean
• txstate — DMA transaction state 🌈 the struct where all the state-y details go

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👑 DESCRIPTION 👑

Return status of dma transaction. That's it, that's the whole thing ✨ It gives you back the status of the DMA transaction you asked about, no cap 💅

Heads up: the manual is genuinely this short. It's giving "confident and concise" and honestly? Slay.

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💜 SEE ALSO 💜

Kernel file ./drivers/dma/qcom/bam_dma.c 🧚 — and here's the whole friend group, all of them, in order, no one left out:

• bam_addr(9)
• bam_reset(9)
• bam_reset_channel(9)
• bam_chan_init_hw(9)
• bam_alloc_chan(9)
• bam_free_chan(9)
• bam_slave_config(9)
• bam_prep_slave_sg(9)
• bam_dma_terminate_all(9)
• bam_pause(9)
• bam_resume(9)
• process_channel_irqs(9)
• bam_dma_irq(9)
• bam_apply_new_config(9)
• bam_start_dma(9)
• dma_tasklet(9)
• bam_issue_pending(9)
• bam_dma_free_desc(9)
• bam_init(9)

Nineteen besties. Go read them all, iykyk 📚💀

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And that's the page, bestie! 🫶 One tiny sign-off for the record: this manual page lives under ./drivers/dma/qcom and it's dated October 2026. Periodt. ⭐💅