pdc2026x_check_atapi_dma(9)

💅 pdc2026x_check_atapi_dma — a Kernel API Manual moment 💅

okay bestie, so this is pdc2026x_check_atapi_dma(9) from the Kernel API Manual, and honestly? it's giving short king. tiny page, big "no" energy. let's get into it 🫶

---

✨ NAME ✨

pdc2026x_check_atapi_dma — literally just: check whether ATAPI DMA can be supported for this command. that's the whole assignment 💅

---

🦋 SYNOPSIS 🦋

int pdc2026x_check_atapi_dma (struct ata_queued_cmd *qc );

one function, one pointer, zero drama. we love a clean signature ✨

---

🎀 ARGUMENTS 🎀

• qc — the metadata associated with the taskfile we're checking. it's the little info bundle that comes with the task, and yes it's a struct ata_queued_cmd *, keep it exactly like that please 💖

---

🌸 DESCRIPTION 🌸

so the whole personality of this function is "just say no" — ATAPI DMA is not supported on older Promise controllers. that's it. that's the function. no cap, it's a hard pass 🙈

LOCKING: None (inherited from caller). so like, don't come for this function about locks — it got them from whoever called it. main character energy but make it inherited 👑

---

💀 RETURN 💀

• returns 0 when ATAPI DMA can be used
• returns 1 otherwise

(and yeah, "otherwise" is doing a lot of heavy lifting here given the whole description above 😭)

---

🔥 SEE ALSO 🔥

• Kernel file ./drivers/ata/pata_pdc202xx_old.c — go read it, iykyk
• pdc202xx_configure_piomode(9)
• pdc202xx_set_piomode(9)
• pdc202xx_set_dmamode(9)
• pdc2026x_bmdma_start(9)
• pdc2026x_bmdma_stop(9)
• pdc2026x_dev_config(9)

all the friends in the group chat, go say hi 🌈

---

reminder bestie: 1 here does not mean success — it means nope, no ATAPI DMA for you. don't get it twisted 💀

---

and that's the page!! 🎀 straight outta ./drivers/ata, dated October 2026, filed under pdc2026x_check_atapi_dma(9) — mwah, stan a tiny kernel doc, bye bestie 💜🦋✨