sci_swab32_cpy(9)

sci_swab32_cpy(9) 💅

okay bestie, welcome to the Kernel API Manual entry for sci_swab32_cpy(9) — we're getting into byte-order lore and I'm seated. 🫶

🌸 NAME 🌸

sci_swab32_cpy — convert between scsi and scu-hardware byte format. that's the whole assignment, periodt. 🎀

✨ SYNOPSIS ✨

void sci_swab32_cpy (void *_dest , void *_src , ssize_t word_cnt );

🎀 ARGUMENTS 🎀

• void *_dest — -- undescribed --. 🙈 the page is literally giving us nothing here.
• void *_src — -- undescribed --. same energy, no cap.
• ssize_t word_cnt — -- undescribed --. iconic of the manual to leave us hanging, fr fr.

Heads up: those three -- undescribed -- labels are exactly what the page gives us, so I'm not inventing any lore. 💀

🦋 DESCRIPTION 🦋

okay so the tea is: scu hardware handles SSP/SMP control, response, and unidentified frames in "big endian dword" order. 🌈

Regardless of host endian, this is always a swab32-per-dword conversion of the standard definition — i.e. single byte fields swapped and multi-byte fields in little-endian. 🧚 no cap, that's the byte-order moment.

💜 SEE ALSO 💜

• Kernel file ./drivers/scsi/isci/isci.h enum sci_status(9)
• enum sci_io_status(9)
• enum sci_task_status(9)

mwah 💋 this page comes from ./drivers/scsi/isci, dated October 2026, and it's still serving sci_swab32_cpy(9) at the very end. 🫶