ath5k_hw_set_txdp(9)

✨ NAME: ath5k_hw_set_txdp(9) ✨

okay bestie, welcome to the ath5k_hw_set_txdp(9) page from the Kernel API Manual 💖. This one is literally about setting the TX Descriptor's address for a specific queue. Main character DMA energy, no cap.

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🌸 SYNOPSIS 🌸

like, here's the exact signature, bestie:

int ath5k_hw_set_txdp (struct ath5k_hw *ah , unsigned int queue , u32
       phys_addr );

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🎀 ARGUMENTS 🎀

• ah — the struct ath5k_hw 👑
• queue — the hw queue number
• phys_addr — the physical address

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🦋 DESCRIPTION 🦋

Set TX descriptor's address for a specific queue. That's the vibe, fr fr.

For 5210 we ignore the queue number and we use tx queue type since we only have 2 queues, so as above we use TXDP0 for normal data queue and TXDP1 for beacon queue. iconic little special case 💅.

For newer chips with QCU/DCU we just set the corresponding TXDP register. slay.

Returns -EINVAL if queue type is invalid for 5210 and -EIO if queue is still active. So yeah, that's the error vibe check 😭.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/wireless/ath/ath5k/dma.c DMA and interrupt masking functions(9)
• ath5k_hw_start_rx_dma(9)
• ath5k_hw_stop_rx_dma(9)
• ath5k_hw_get_rxdp(9)
• ath5k_hw_set_rxdp(9)
• ath5k_hw_start_tx_dma(9)
• ath5k_hw_stop_tx_dma(9)
• ath5k_hw_stop_beacon_queue(9)
• ath5k_hw_get_txdp(9)
• ath5k_hw_update_tx_triglevel(9)
• ath5k_hw_is_intr_pending(9)
• ath5k_hw_get_isr(9)
• ath5k_hw_set_imr(9)
• ath5k_hw_dma_init(9)
• ath5k_hw_dma_stop(9)

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that's the whole page, bestie 🫶 — xoxo from source/version ./drivers/net/wireless/ath/ath5k, dated October 2026 💖