parport_ip3...te_block_pio(9)

📦 version 7.3.1, in nixpkgs unstable

💅 parport_ip32_fifo_write_block_pio(9) 💅

okay so bestie, you found yourself in the Kernel API Manual — welcome to the parport side of the kernel, it's giving niche-but-iconic 🎀

✨ NAME ✨

parport_ip32_fifo_write_block_pio — bestie, it writes a whole block of data in PIO mode 🫶

🌸 SYNOPSIS 🌸

size_t parport_ip32_fifo_write_block_pio (struct parport *p , const void *buf , size_t len );

🦋 ARGUMENTS 🦋

  • p — pointer to struct parport, literally the port you're working with 💖
  • buf — the buffer of data you wanna write, your little payload 🎀
  • len — length of buffer buf, like how many bytes we're sending bestie

👑 DESCRIPTION 👑

So the way this works: this function uses PIO to write the contents of the buffer buf into the parallel port FIFO ✨. It returns the number of bytes that were actually written — which lowkey matters, because not everything is guaranteed to go through, iykyk 🙈.

It can work with or without the help of interrupts, so it's flexible like that 💁‍♀️.

⚠️ okay but for real: the parallel port must be correctly initialized before calling parport_ip32_fifo_write_block_pio. Like, do not skip that step bestie, it's not a suggestion, it's the whole vibe check 😭

💜 SEE ALSO 💜

Kernel file ./drivers/parport/parport_ip32.c struct — plus the whole friend group:

and that's the whole page bestie, no crumbs left 🍓

shoutout to the source at ./drivers/parport and the October 2026 date stamp — periodt, that's a wrap 💅✨🦋

📦 where this page comes from