ishtp_hbm_dma_xfer(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ishtp_hbm_dma_xfer — the Kernel API Manual, bestie edition 🎀

okay so you're reading a page from the Kernel API Manual (yes, that manual, the (9) one, section 9, kernel internals, we're in the big leagues now) and the star of the show is ishtp_hbm_dma_xfer. sit down, hydrate, let's get into it 🫶

✨ NAME ✨

ishtp_hbm_dma_xfer — the one where we Receive DMA transfer message. that's it. that's the whole vibe. it receives a DMA transfer message and honestly? iconic behavior 💅

🌸 SYNOPSIS 🌸

void ishtp_hbm_dma_xfer (struct ishtp_device *dev , struct dma_xfer_hbm
*dma_xfer );

look at that signature. void return, so it gives you nothing back — it's a giver, not a taker. no cap, it just does the thing and dips 😌

🦋 ARGUMENTS 🦋

  • dev — the ISHTP device instance 💖 this is the main character, the actual hardware situation we're talking to.
  • dma_xfer — the HBM transfer message 🌈 this is the payload, the lil envelope of info that showed up.

🧚 DESCRIPTION 🧚

so like, this function receives an ISHTP-over-DMA client message ✨ that's the whole assignment. a message from a client comes in over DMA, and this bad boy is the one that catches it. not me being obsessed with a receive path but here we are 🍓

ngl there is not a ton of lore here — the manpage keeps it short and so will I. short king behavior 👑

👑 SEE ALSO 👑

okay bestie this list is LONG, so buckle up, we're going on a tour of the whole hbm.c friend group 🎀

first, the file where all these live:

Kernel file ./drivers/hid/intel-ish-hid/ishtp/hbm.c

and now the whole crew, fr fr:

like… the way there are so many of them and yet every single one got a (9)?? we stan a consistently formatted family 🌟 go read them all, i'll wait 💜

aaaand that's the page!! no bugs, no warnings, no exit statuses, just a chill little receive function living its truth 🦋

cute little sign-off time: this page comes from the source directory ./drivers/hid/intel-ish-hid/ishtp and it's dated October 2026 💖✨ go forth and receive your DMA transfer messages, bestie, you got this 🫶💅

📦 where this page comes from