alloc_io_space(9)

💖 alloc_io_space(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes we're literally in the kernel docs rn and this one is about PCMCIA stuff, iykyk 🎀

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✨ NAME ✨

alloc_io_space — allocate IO ports for use by a PCMCIA device 🦋

like, it grabs IO ports so your PCMCIA card has somewhere to live, periodt.

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🌸 SYNOPSIS 🌸

int alloc_io_space (struct pcmcia_socket *s , struct resource *res ,
       unsigned int lines );

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💅 ARGUMENTS 💅

• s — pcmcia socket 👑 this is the socket you're doing the thing on
• res — resource to allocate (begin: begin, end: size) 📦 note the vibe: begin is the begin and end is the size, not the end — iconic but read it carefully bestie
• lines — number of IO lines decoded by the PCMCIA card 🔥

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🫶 DESCRIPTION 🫶

Special stuff for managing IO windows, because they are scarce 😭 fr fr these windows are a limited resource and we gotta be careful with them. it's giving "budget allocation energy" ngl.

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🌈 SEE ALSO 🌈

Kernel file ./drivers/pcmcia/pcmcia_resource.c 🌸 and also these icons:

• release_io_space(9)
• pcmcia_map_mem_page(9)
• pcmcia_fixup_iowidth(9)
• pcmcia_fixup_vpp(9)
• pcmcia_release_configuration(9)
• pcmcia_release_io(9)
• pcmcia_release_window(9)
• pcmcia_enable_device(9)
• pcmcia_request_io(9)
• pcmcia_request_irq(9)
• pcmcia_setup_isa_irq(9)
• pcmcia_setup_irq(9)
• pcmcia_request_window(9)
• pcmcia_disable_device(9)

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💀 reminder: res wants begin as the begin and end as the size — do not get cute with it, that's just how it is.

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omg and before i forget, the source/version vibe is ./drivers/pcmcia and the date on this bad boy is October 2026 🎀💜 slay, go allocate those ports responsibly bestie ✨👑