ice_is_40b_phy_reg_e82x(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ice_is_40b_phy_reg_e82x(9) — like, the 40-bit PHY register detector ✨

okay bestie, buckle up, because this is a Kernel API Manual page (the ice_is_40b_phy_reg_e82x(9) one, to be exact) and it is so much cooler than the name makes it sound. literally it's a little boolean detective for your PHY registers 🕵️‍♀️

🌸 NAME 🌸

ice_is_40b_phy_reg_e82x — the "wait, is this a 40bit PHY register??" check, no cap.

🎀 SYNOPSIS 🎀

bool ice_is_40b_phy_reg_e82x (u16 low_addr , u16 *high_addr );

🦋 ARGUMENTS 🦋

  • low_addr — the low address you're checking, babe. this is the one you hand over for inspection.
  • high_addr — on return, this bad boy contains the high address of the 40bit value. it's the output slot, the little mailbox where the answer gets dropped off 🫶

✨ DESCRIPTION ✨

okay so here's the vibe 💫 this function checks if the provided low_addr is one of the known 40bit PHY values that are split into two registers — with the lower 8 bits living in the low register and the upper 32 bits chilling in the high register. math is mathing, the bits are splitting, it's giving teamwork.

and if it is one of those, it returns the appropriate high register offset for you to use. slay. that's it, that's the whole gig 👑

👑 SEE ALSO 👑

the kernel file in question, first of all:

./drivers/net/ethernet/intel/ice/ice_ptp_hw.c

and then... the entire extended friend group 😭 (yes, all of them, I would never leave a single one out, that's not the kind of bestie I am):

💀 friendly reminder: this is a boolean function, so like... read the return value before you start using high_addr, bestie. don't be out here ignoring return values, that's not the main character energy we want 🙈

and that's the whole page, diva 💜 this gem lives in the kernel source at ./drivers/net/ethernet/intel/ice, dated October 2026, page ice_is_40b_phy_reg_e82x(9) 🎀✨ mwah, go read some registers, you got this 🫶🌈

📦 where this page comes from