macio_request_resources(9)

💖 NAME

okay bestie, welcome to macio_request_resources(9) from the Kernel API Manual — the function that's literally "Reserve all memory resources" for a MacIO device. no cap. 💅

✨ SYNOPSIS

int macio_request_resources (struct macio_dev *dev , const char *name );

🎀 ARGUMENTS

• dev — the MacIO device whose resources are gonna be reserved. main character device energy.
• name — the name that gets associated with the resource. it's literally the owner label, bestie.

🦋 DESCRIPTION

So this call marks all memory regions associated with the MacIO device dev as being reserved by owner name. iconic behavior, honestly. ✨

🚨 IMPORTANT CAVEAT: do not access any address inside those memory regions unless this call returns successfully. like, don't even breathe on them early, okay? 😭

It returns 0 on success, or EBUSY on error. and yes, a warning message is also printed on failure — the kernel is not subtle about it. 💀

🌸 SEE ALSO

Kernel file ./drivers/macintosh/macio_asic.c — the source lore lives there, iykyk. Also:

• macio_release_dev(9)
• macio_resource_quirks(9)
• macio_add_one_device(9)
• macio_pci_add_devices(9)
• macio_register_driver(9)
• macio_unregister_driver(9)
• macio_request_resource(9)
• macio_release_resource(9)
• macio_release_resources(9)

okay bye bestie 🫶💖 — source/version: ./drivers/macintosh, date: October 2026, page: macio_request_resources(9). slay. 🎀