t4_i2c_rd(9)

📦 version 7.3.1, in nixpkgs unstable

💅 t4_i2c_rd(9) 💅

okay so bestie, buckle up — this is a page from the Kernel API Manual, and the star of the show is t4_i2c_rd. yes, we're reading I2C data from an adapter. it's giving hardware whisperer energy and honestly? iconic. 🎀

✨ NAME ✨

t4_i2c_rd — read I2C data from adapter 🦋

🌸 SYNOPSIS 🌸

int t4_i2c_rd (struct adapter *adap , unsigned int mbox , int port ,
       unsigned int devid , unsigned int offset , unsigned int len , u8 *buf );

💖 ARGUMENTS 💖

like, seven whole params. she's thorough. let's go one by one, no skipping:

  • adap — the adapter. the whole main character of this operation tbh.
  • mbox — the mailbox to use for the FW command. yes, FW = firmware, and yes, she has her own mailbox, we love a queen with correspondence. 💌
  • port — the port number, but only if it's a per-port device. if it's not? pass <0. lowkey important, don't forget. 🙈
  • devid — either a per-port device ID or an absolute device ID. pick your flavor. ✨
  • offset — the byte offset into the device's I2C space. it's giving "where exactly do you want me to look" energy. 🔍
  • len — the byte length of the I2C space data. basically how much you're grabbing. 📏
  • buf — the buffer where the I2C data comes home to roost. this is where the good stuff lands. 🫶

🌈 DESCRIPTION 🌈

okay so here's the whole vibe, fr fr: this function reads the I2C data from the indicated device and location. that's it, that's the tea. you point at a device, you point at a spot in it, and she brings the bytes back in buf. simple, elegant, slay. 💅

👑 SEE ALSO 👑

the friend group is huge. like genuinely enormous. here's every single one, bestie, in order, because we don't gatekeep:

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

ngl, that's a lot of friends. but every single one of them ate, and they all deserve their spot. 💀✨

and that's the whole page, bestie! this one came from ./drivers/net/ethernet/chelsio... — yeah, the path gets cut off, that's just how it is, don't come for her 🫶 — and it's dated October 2026, filed under t4_i2c_rd(9) in the Kernel API Manual. go read some I2C bytes for me, mwah 💋🌸

📦 where this page comes from