asd_ddbsite_update_word(9)

💖 asd_ddbsite_update_word(9) — Kernel API Manual 💖

okay bestie, welcome to the Kernel API Manual page for asd_ddbsite_update_word(9) — yes, the function name is a whole mouthful, but we're gonna slay it together. ✨

🌸 NAME 🌸

asd_ddbsite_update_word — atomically update a word in a ddb site. periodt. 💅

✨ SYNOPSIS ✨

int asd_ddbsite_update_word (struct asd_ha_struct *asd_ha , u16
       ddb_site_no , u16 offs , u16 oldval , u16 newval );

No cap, that's the whole call signature. 🫶

🎀 ARGUMENTS 🎀

• asd_ha — pointer to host adapter structure. literally the host adapter's pointer, bestie.
• ddb_site_no — the DDB site number. yep, the number of the DDB site.
• offs — the offset into the DDB. the way this pinpoints exactly where we're poking inside the DDB 😭
• oldval — old value found in that offset. that's what oldval is holding before the swap.
• newval — the new value to replace it. the glow-up value going in. 💖

🦋 DESCRIPTION 🦋

okay so this function is the one you reach for when the sequencers are running and you need to update a DDB site atomically — without the expensive pausing and upausing of the sequencers, and without accessing the DDB site through the CIO bus. it's giving "surgical little update while everything stays live" energy. 💅

Return vibes, bestie — keep these close:

• 0 on success. slay. ✅
• -EFAULT on parity error. 😭
• -EAGAIN if the old value is different than the current value at that offset. not matching? try-again energy. 🔁

🌈 SEE ALSO 🌈

• Kernel file ./drivers/scsi/aic94xx/aic94xx_reg.h — go peek, iykyk. 📚

mwah 💋 this page is from ./drivers/scsi/aic94xx, dated October 2026, and it's chillin' under asd_ddbsite_update_word(9). 🫶💖