STRUCT PARPORT_IP32_DMA_DATA(9)

📦 version 7.3.1, in nixpkgs unstable

✨ struct parport_ip32_dma_data(9) ✨

okay so this is the Kernel API Manual page for struct parport_ip32_dma_data, and bestie, it's literally just the private little stash of data you need for DMA operation. nothing more, nothing less, and honestly? she's doing exactly what she says on the tin 💅

🌸 NAME 🌸

struct parport_ip32_dma_data — the private data needed for DMA operation 🫶

🦋 SYNOPSIS 🦋

struct parport_ip32_dma_data {
    enum dma_data_direction         dir;
    dma_addr_t buf;
    dma_addr_t next;
    size_t len;
    size_t left;
    unsigned int                    ctx;
    unsigned int                    irq_on;
    spinlock_t lock;
 };

like, that's the whole vibe check right there 👑

🎀 Members 🎀

every field, no skips, no cap:

  • dir — the DMA direction, aka which way the bytes are going: from or to the device 🔄
  • buf — the buffer physical address. yes, physical, not vibes 💫
  • next — address of the next bytes to DMA transfer. she's always looking ahead ✨
  • len — buffer length, the whole thing 📏
  • left — number of bytes remaining. the countdown is real 😭
  • ctx — next context to write (0: context_a; 1: context_b) 🎚️
  • irq_on — are the DMA IRQs currently enabled? a whole yes/no moment 👀
  • lock — spinlock to protect access to the structure. respect the lock or perish 🔒

💖 SEE ALSO 💖

the friend group is huge, so buckle up:

like I said. huge. iconic behavior only 🌈

that's the whole page, bestie — go read the source in ./drivers/parport, this one's dated October 2026, and it slayed 💅⭐🍓🧚💜

📦 where this page comes from