STRUCT XDMA_DEVICE(9)

💅 NAME 💅

struct xdma_device — bestie, it's the DMA device structure itself, the main character of the whole show 👑

So this is the manual page for struct xdma_device(9) from the Kernel API Manual — yeah, we're in kernel-land now, and it's giving big "I read the source, actually" energy 🎀

---

✨ SYNOPSIS ✨

ok so here's the whole struct, literally every field, no skipping, no cap:

struct xdma_device {
    struct platform_device  *pdev;
    struct dma_device       dma_dev;
    struct regmap           *rmap;
    struct xdma_chan        *h2c_chans;
    struct xdma_chan        *c2h_chans;
    u32 h2c_chan_num;
    u32 c2h_chan_num;
    u32 irq_start;
    u32 irq_num;
    u32 status;
 };

she's got ten fields and every single one is slaying in her own little lane 💖

---

🌸 Members 🌸

okay time for the field-by-field vibe check, let's go 🦋

• pdev — the platform device pointer, aka her link back to the platform device she belongs to
• dma_dev — the DMA device structure, the whole reason she exists tbh
• rmap — the MMIO regmap for the DMA registers, where all the register poking happens ✨
• h2c_chans — Host to Card channels, exactly what it sounds like, going one direction hun
• c2h_chans — Card to Host channels, the other direction, we're nothing if not symmetrical 💅
• h2c_chan_num — number of H2C channels, like, the count
• c2h_chan_num — number of C2H channels, also a count, also iconic
• irq_start — the start IRQ assigned to the device, where the interrupt party begins 🎉
• irq_num — number of IRQ assigned to device, i.e. how many interrupts she gets
• status — initialization status, the "are we okay or are we not okay" field 😭

---

🫶 SEE ALSO 🫶

all her friends!! the whole friend group lives in the kernel file ./drivers/dma/xilinx/xdma.c and honestly the roster ate 🔥

• struct xdma_desc_block(9)
• struct xdma_chan(9)
• struct xdma_desc(9)
• xdma_link_sg_desc_blocks(9)
• xdma_link_cyclic_desc_blocks(9)
• xdma_channel_init(9)
• xdma_free_desc(9)
• xdma_alloc_desc(9)
• xdma_xfer_start(9)
• xdma_xfer_stop(9)
• xdma_alloc_channels(9)
• xdma_issue_pending(9)
• xdma_terminate_all(9)
• xdma_synchronize(9)
• xdma_fill_descs(9)
• xdma_prep_device_sg(9)
• xdma_prep_dma_cyclic(9)
• xdma_prep_interleaved_dma(9)
• xdma_device_config(9)
• xdma_free_chan_resources(9)
• xdma_alloc_chan_resources(9)
• xdma_channel_isr(9)
• xdma_irq_fini(9)
• xdma_set_vector_reg(9)
• xdma_irq_init(9)
• xdma_disable_user_irq(9)
• xdma_enable_user_irq(9)
• xdma_get_user_irq(9)
• xdma_remove(9)
• xdma_probe(9)

like, go read them, they're all right there, iykyk 👑

---

ngl there are no warnings on this one — it's just a struct. but fr fr, use the real field types and don't go inventing your own, okay? 🍓

---

mwah 💋 that's the page!! sourced straight from ./drivers/dma/xilinx, dated October 2026, and yes she's still struct xdma_device(9) — the one and only. slay, bye ✨🧚💜