t4_read_indirect(9)

📦 version 7.3.1, in nixpkgs unstable

💅 t4_read_indirect(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — yes this whole thing lives in section 9 of the man pages, that's the kernel-functions zone, we love that for us 🎀. Today's main character is t4_read_indirect, and honestly? she reads indirect registers. that's the whole vibe. let's get into it 🦋

✨ NAME ✨

t4_read_indirect — read indirectly addressed registers 💫

🌸 SYNOPSIS 🌸

void t4_read_indirect (struct adapter *adap , unsigned int addr_reg ,
       unsigned int data_reg , u32 *vals , unsigned int nregs , unsigned int
       start_idx );

like, six whole parameters. she's a little extra but she delivers 🫶

🎀 ARGUMENTS 🎀

  • adap — the adapter 💖 this is the cxgb4 friend you're doing all of this for.
  • addr_reg — the register holding the indirect address 👑 which register you poke to say "hey, I want that one".
  • data_reg — the register holding the value of the indirect register 🌟 the other half of the address/data duo, this one actually hands over the goods.
  • vals — where the read register values are stored 🍓 your output array, your little treasure chest.
  • nregs — how many indirect registers to read 🔥 grabby hands. how many you want.
  • start_idx — index of first indirect register to read ⭐ where the reading begins, bestie.

🦋 DESCRIPTION 🦋

Reads registers that are accessed indirectly through an address/data register pair 💅✨

that's it, that's the whole thing — and ngl it's kind of iconic in its simplicity. some registers don't have their own lil address you can just read; instead you write the address into addr_reg, then the hardware hands you the value over in data_reg. this function does that little dance for you, nregs times starting at start_idx, and drops the results into vals. no cap. 🧚

🌈 SEE ALSO 🌈

it's giving extended family reunion 😭 like, the whole cxgb4 crew showed up. every single one of these is linked below, no skipping, we respect our elders 💜

okay that's the whole page, bestie, you ate that 💅✨

mwah 💖 and before you go — little sign-off from the page itself: it comes from ./drivers/net/ethernet/chelsio... and it's dated October 2026, so she's fresh, she's current, she's serving 🌸🦋 periodt

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