STRUCT MTK_HSDMA_PDESC(9)

hiii bestie 💖 welcome to the struct mtk_hsdma_pdesc(9) page in the Kernel API Manual — we’re gonna make this kernel struct make sense, no cap. ✨

🌸 NAME 🌸

struct mtk_hsdma_pdesc — This is the struct holding info describing physical descriptor (PD), and its placement must be kept at 4-bytes alignment in little endian order. periodt. It’s giving “my bytes have a very specific vibe” 💅

✨ SYNOPSIS ✨

struct mtk_hsdma_pdesc {
    __le32 desc1;
    __le32 desc2;
    __le32 desc3;
    __le32 desc4;
 };

🎀 Members 🎀

okay so the Members list got its sentences chopped across columns like a group chat where everyone sends half a thought — I’m keeping every crumb, bestie:

• desc1 — The control pad used to indicate hardware how to
• desc2 — deal with the descriptor such as source and
• desc3 — destination address and data length. The maximum
• desc4 — data length each pdesc can handle is 0x3f80 bytes

Read those four together like the one continuous thought they are: the control pad tells hardware how to deal with the descriptor, including source and destination address and data length — and the maximum data length each pdesc can handle is 0x3f80 bytes 🔥.

🌈 SEE ALSO 🌈

• Kernel file ./drivers/dma/mediatek/mtk-hsdma.c
• struct mtk_hsdma_vdesc(9)
• struct mtk_hsdma_cb(9)
• struct mtk_hsdma_ring(9)
• struct mtk_hsdma_pchan(9)
• struct mtk_hsdma_vchan(9)
• struct mtk_hsdma_soc(9)
• struct mtk_hsdma_device(9)

mwah 💋 that’s the whole page. source/version is ./drivers/dma/mediatek, dated October 2026, and this icon is struct mtk_hsdma_pdesc(9). bye bestie, go slay those descriptors 🫶✨