t4_write_flash(9)

📦 version 7.3.1, in nixpkgs unstable

💾 t4_write_flash(9) — the Kernel API Manual girlies' edition ✨

okay so bestie, we're in the Kernel API Manual today and this one is about pushing data into serial flash. it's called t4_write_flash and honestly? she does exactly what it says on the tin. no plot twist. 🎀

🌸 SYNOPSIS 🌸

int t4_write_flash (struct adapter *adapter , unsigned int addr ,
     unsigned int n , const u8 *data , bool byte_oriented );

like, that's the whole vibe. five arguments, one int back. slay. 💅

🦋 ARGUMENTS 🦋

  • adapter — the adapter. yes queen, the adapter. that's the whole description, she's mysterious like that. 🙈
  • addr — the start address to write. where the magic happens, literally. ✨
  • n — length of data to write, in bytes. count 'em. 🔢
  • data — the data to write. the payload. the main character. 👑
  • byte_oriented — whether to store data as bytes or as words. this one's the whole personality of the call, iykyk. 🌈

💖 DESCRIPTION 💖

so what she does is: writes up to a page of data — that's 256 bytes, no cap — to the serial flash, starting at the given address. 🍓

⚠️ important bestie moment: all the data must be written to the same page. like, don't go straddling pages with this call, she will not be happy about it. 😭

and here's the endianness tea ☕ — if byte_oriented is set, the write data is stored as a byte stream (i.e. matches what's on disk). otherwise it goes in big-endian. that's the entire fork in the road, periodt. 💀

🔥 SEE ALSO 🔥

the friend group is huge, buckle up buttercup — first off, the actual source file:

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

and now the extended cinematic universe 🫶:

like i said. huge friend group. she knows everyone. 🌟

that's the whole page bestie!! 💜 this cutie came from source ./drivers/net/ethernet/chelsio... and it's dated October 2026 — so mark your calendar, mwah, bye 🧚‍♀️💖

📦 where this page comes from