STRUCT EP93XX_DMA_DESC(9)

📦 version 7.3.1, in nixpkgs unstable

💅 struct ep93xx_dma_desc(9) — the Kernel API Manual, bestie edition

okay so real quick before we dive in: this is a page from the Kernel API Manual, and it's literally all about struct ep93xx_dma_desc 💖 like. the whole page. that's the assignment. no cap.

✨ NAME ✨

struct ep93xx_dma_desc — the EP93xx specific transaction descriptor, and yes it's exactly as iconic as it sounds 🎀

🦋 SYNOPSIS 🦋

here's the struct in all its glory, copied verbatim because we do not mess with code, periodt:

struct ep93xx_dma_desc {
    u32 src_addr;
    u32 dst_addr;
    size_t size;
    bool complete;
    struct dma_async_tx_descriptor  txd;
    struct list_head                tx_list;
    struct list_head                node;
 };

like. look at it. seven whole members. main character energy fr fr 👑

🌸 Members 🌸

okay so let's go through every single field one by one, no skipping, we're being thorough bestie 🫶

  • src_addr — the source address of the transaction 💫 like, where the data's coming from, iykyk
  • dst_addr — the destination address of the transaction 🎯 where it's going. the glow-up location.
  • size — the size of the transaction, and that's in bytes btw, don't forget the units 📏
  • complete — this descriptor is completed ✅ like it's done, it ate, it slayed, it's finished
  • txd — the dmaengine API descriptor 🔥 the actual dmaengine-facing part, lowkey the most important one
  • tx_list — a list of linked descriptors 🔗 chain 'em up, bestie
  • node — the link used for putting this into a channel queue 🧚 the little handle that gets you into the queue. it's giving VIP list.

👀 SEE ALSO 👀

go read these next, they're all in the Kernel file ./drivers/dma/ep93xx_dma.c — every single one, here we go, don't skip any 💜:

that's fifteen (15) references, we counted, we listed, nothing got left behind 💅

anyway that's the whole page!! mwah 💋 this came from ./drivers/dma, dated October 2026, and it starred struct ep93xx_dma_desc(9) in the leading role. go read the kernel source bestie, ily, bye 🦋✨🎀

📦 where this page comes from