t4_tp_pio_read(9)

📦 version 7.3.1, in nixpkgs unstable

💖 t4_tp_pio_read(9) 💖

okay so bestie, welcome to the Kernel API Manual, section 9 — this is the page for t4_tp_pio_read, and it does literally exactly what the name says: it reads the TP PIO registers. that's it. that's the whole vibe. 🦋

✨ NAME ✨

t4_tp_pio_read — Read TP PIO registers 🎀

🌸 SYNOPSIS 🌸

void t4_tp_pio_read (struct adapter *adap , u32 *buff , u32 nregs , u32
start_index , bool sleep_ok );

no cap, that's the whole signature. void return, five args, let's go 💅

🫶 ARGUMENTS 🫶

  • adap — the adapter. the main character. your NIC, basically 👑
  • buff — where the indirect register values get written. this is the destination, so keep your eyes on it 🎯
  • nregs — how many indirect registers to read. quantity, bestie, it matters 💀
  • start_index — index of the first indirect register to read. where the little register road trip begins 🌈
  • sleep_ok — if true we may sleep while awaiting command completion. if it's true, nap privileges granted 😴✨

💜 DESCRIPTION 💜

Read TP PIO Registers. that's the description, fr fr — it's a short one, and honestly? iconic for that. 🌟

it hands your adap over, reads nregs indirect registers starting at start_index, and drops the values into buff. and remember: sleep_ok being true is what lets it sleep while it waits for the command to complete. 🫡

🔥 SEE ALSO 🔥

first up, the source file it lives in, in case you wanna go read the actual code like the little scholar you are:

Kernel file ./drivers/net/ethernet/chelsio/cxgb4/t4_hw.c 📂

and now the friend group — the entire extended family, no skips, no cuts:

like… that's the whole group chat. every single one of them. 💀💖

🧚 friendly reminder bestie: if you set sleep_ok to true, this function is allowed to sleep while it waits for command completion — so don't go calling it from somewhere that can't handle a little nap. 🙈

and that's the page!! 🌸 source is ./drivers/net/ethernet/chelsio... and it's dated October 2026 — so yeah, future girl summer for this one 💅✨ mwah, ily, go read some registers 🎀🦋

📦 where this page comes from