igb_shift_in_eec_bits(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 igb_shift_in_eec_bits 💅

okay so bestie, you've found your way into the Kernel API Manual page for igb_shift_in_eec_bits(9) and honestly? iconic of you. this one's a little low-level nugget from the Intel igb driver, and we're gonna get you comfy with it. no cap. 🦋

✨ NAME ✨

igb_shift_in_eec_bits — bestie, it shifts data bits in from the EEPROM. that's the whole vibe. 💫

🌸 SYNOPSIS 🌸

u16 igb_shift_in_eec_bits (struct e1000_hw *hw , u16 count );

look at her. so clean. so little. 🫶

💖 ARGUMENTS 💖

  • hw — pointer to the HW structure. like, the hardware situation. the whole context. you're handing her the keys 🗝️
  • count — number of bits to shift in. how many little bitsies we're pulling. 🔢

🔥 DESCRIPTION 🔥

okay so here's the tea ☕ — in order to read a register from the EEPROM, we need to shift count bits in from the EEPROM. literally that's the job, that's the whole assignment. 💅

bits are "shifted in" by raising the clock input to the EEPROM (setting the SK bit), and then reading the value of the data out DO bit. so: bump the clock ⏰, then peek at what DO is saying. that's the rhythm, that's the dance. 🕺

and like, lowkey important — during this "shifting in" process the data in DI bit should always be clear. always always. no exceptions, no vibes-based exceptions. 🚨

🌈 SEE ALSO 🌈

the kernel file in question, she lives here:

  • Kernel file ./drivers/net/ethernet/intel/igb/e1000_nvm.c

and her whole friend group (iykyk) 🫶:

and yeah — this little page comes to you from ./drivers/net/ethernet/intel/igb, dated October 2026, filed under the very main-character name igb_shift_in_eec_bits(9). slay, go shift some bits, bestie. 💅✨🎀

📦 where this page comes from