rio_disc_mport(9)

🌸 rio_disc_mport 💅

okay bestie, so this is a page from the Kernel API Manual — yes, the kernel, we're literally in the kernel rn — and it's about rio_disc_mport. She's the one who kicks off discovery through a master port. Let's get into it 🫶

---

✨ NAME ✨

rio_disc_mport — start discovery through a master port. that's it, that's the whole vibe ✨

---

🦋 SYNOPSIS 🦋

int rio_disc_mport (struct rio_mport *mport , u32 flags );

literally the whole signature, no cap 💜

---

🎀 ARGUMENTS 🎀

• mport — the master port that's gonna send the transactions. she's the main character here 👑
• flags — discovery control flags. the lil knobs that tell discovery how to behave 🎛️

---

🔥 DESCRIPTION 🔥

so. this function starts the discovery process. periodt.

if we have an active link, then it waits for the signal that enumeration is complete — but only if wait is allowed. iykyk, no waiting if waiting isn't allowed 🙈

and when enumeration completion gets signaled? that's when we start recursive peer discovery. it's giving recursive, it's giving peer, it's giving discovery 🌈

returns 0 if discovery succeeds, or -EBUSY on failure. so like, -EBUSY means nope, she's busy, try again later bestie 😭

---

🧚 SEE ALSO 🧚

kernel file ./drivers/rapidio/rio-scan.c — go look at her, she's iconic 💖

and then the whole friend group, fr fr:

• rio_destid_alloc(9)
• rio_destid_reserve(9)
• rio_destid_free(9)
• rio_destid_first(9)
• rio_destid_next(9)
• rio_get_device_id(9)
• rio_set_device_id(9)
• rio_clear_locks(9)
• rio_enum_host(9)
• rio_device_has_destid(9)
• rio_release_dev(9)
• rio_is_switch(9)
• rio_setup_device(9)
• rio_sport_is_active(9)
• rio_get_host_deviceid_lock(9)
• rio_enum_peer(9)
• rio_enum_complete(9)
• rio_disc_peer(9)
• rio_mport_is_active(9)
• rio_update_route_tables(9)
• rio_init_em(9)
• rio_enum_mport(9)
• rio_build_route_tables(9)
• rio_basic_attach(9)

like, the whole squad, all present and accounted for 💅

---

and that's the tea 🍓 this one lives in ./drivers/rapidio and the page is dated October 2026 — so yeah, she's from the future, slay ⭐ bye bestie, go discover some peers 🦋✨