STRUCT XVIP_DMA(9)

✨ NAME ✨

okay so welcome to the Kernel API Manual, bestie 💖 — this page is all about struct xvip_dma, and it is literally the Video DMA channel. that's the whole vibe. one struct, one channel, zero notes 💅

🌸 SYNOPSIS 🌸

here's the whole glow-up, laid out exactly how it ships 🫶

struct xvip_dma {
    struct list_head list;
    struct video_device video;
    struct media_pad pad;
    struct xvip_composite_device *xdev;
    struct xvip_pipeline pipe;
    unsigned int port;
    struct mutex lock;
    struct v4l2_pix_format format;
    const struct xvip_video_format *fmtinfo;
    struct vb2_queue queue;
    unsigned int sequence;
    struct list_head queued_bufs;
    spinlock_t queued_lock;
    struct dma_chan *dma;
    unsigned int align;
    struct dma_interleaved_template xt;
    struct data_chunk sgl;
 };

like… look at her. seventeen fields and every single one is doing her job 👑

🎀 Members 🎀

okay so this is the part where we go member by member, no skips, no shortcuts, we are not leaving anybody out 🙈

• list — the list entry sitting in a composite device dmas list 🔗
• video — the V4L2 video device that's associated with the DMA channel 📹
• pad — the media pad for the video device entity 🧚
• xdev — the composite device this DMA channel belongs to 👑
• pipe — the pipeline belonging to the DMA channel 🌈
• port — the composite device DT node port number for the DMA channel 🔌
• lock — protects the format, fmtinfo and queue fields 🔒 (she's the bodyguard, respect her)
• format — the active V4L2 pixel format 🖼️
• fmtinfo — the format information corresponding to the active format ⭐
• queue — the vb2 buffers queue 🧺
• sequence — the V4L2 buffers sequence number 🔢
• queued_bufs — list of queued buffers 📚
• queued_lock — protects the buf_queued list 🔐
• dma — the DMA engine channel ⚡
• align — the transfer alignment required by the DMA channel, in bytes 📏
• xt — the dma interleaved template for dma configuration 🧩
• sgl — the data chunk structure for dma_interleaved_template 🍓

that's all seventeen, accounted for, main character energy from start to finish 💀✨

🦋 SEE ALSO 🦋

if you want more, go touch the kernel file ./drivers/media/platform/xilinx/xilinx-dma.h and also check out the struct xvip_pipeline(9) page — they're literally besties, iykyk 🫶

ngl bestie, if you made it this far you now know struct xvip_dma better than half the internet. slay 💅

okay that's the whole page!! sourced from ./drivers/media/platform/xilinx, dated October 2026 — mwah, go write some drivers 💖🎀🦋