rio_map_outb_region(9)

💅 rio_map_outb_region(9) — Kernel API Manual 💅

okay so bestie, this is the Kernel API Manual page for rio_map_outb_region(9), and it's here to explain mapping an outbound memory region without making your brain buffer. periodt. 💖

🌸 NAME 🌸

rio_map_outb_region - - Map outbound memory region.

✨ SYNOPSIS ✨

int rio_map_outb_region (struct rio_mport *mport , u16 destid , u64
rbase , u32 size , u32 rflags , dma_addr_t *local );

🎀 ARGUMENTS 🎀

Here's the cast, bestie — every single one matters:

• mport — Master port.
• destid — destination id window points to.
• rbase — RIO base address window translates to.
• size — Size of the memory region.
• rflags — Flags for mapping.
• local — physical address of memory region mapped.

🔥 RETURN 🔥

• 0 — Success.

That's the whole return story listed here: 0 means success. slay. ✨

🦋 DESCRIPTION 🦋

This function will create the mapping from RIO space to local memory. That's the entire vibe — it makes that mapping happen. 🫶

👑 SEE ALSO 👑

Kernel file ./drivers/rapidio/rio.c is the main character, and the rest of the iconic group chat is:

• rio_local_get_device_id(9)
• rio_query_mport(9)
• rio_alloc_net(9)
• rio_local_set_device_id(9)
• rio_add_device(9)
• rio_request_inb_mbox(9)
• rio_release_inb_mbox(9)
• rio_request_outb_mbox(9)
• rio_release_outb_mbox(9)
• rio_setup_inb_dbell(9)
• rio_request_inb_dbell(9)
• rio_release_inb_dbell(9)
• rio_request_outb_dbell(9)
• rio_release_outb_dbell(9)
• rio_add_mport_pw_handler(9)
• rio_del_mport_pw_handler(9)
• rio_request_inb_pwrite(9)
• rio_release_inb_pwrite(9)
• rio_pw_enable(9)
• rio_map_inb_region(9)
• rio_unmap_inb_region(9)
• rio_unmap_outb_region(9)
• rio_mport_get_physefb(9)
• rio_get_comptag(9)
• rio_set_port_lockout(9)
• rio_enable_rx_tx_port(9)
• rio_chk_dev_route(9)
• rio_mport_chk_dev_access(9)
• rio_chk_dev_access(9)
• rio_get_input_status(9)
• rio_clr_err_stopped(9)
• rio_inb_pwrite_handler(9)
• rio_mport_get_efb(9)
• rio_mport_get_feature(9)
• rio_std_route_add_entry(9)
• rio_std_route_get_entry(9)
• rio_std_route_clr_table(9)
• rio_lock_device(9)
• rio_unlock_device(9)
• rio_route_add_entry(9)
• rio_route_get_entry(9)
• rio_route_clr_table(9)
• rio_request_mport_dma(9)
• rio_release_dma(9)
• rio_dma_prep_xfer(9)
• rio_register_scan(9)
• rio_mport_scan(9)

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xoxo 💖 from ./drivers/rapidio, October 2026 — rio_map_outb_region(9) out 💅