rio_enable_rx_tx_port(9)

✨ rio_enable_rx_tx_port(9) ✨

okay so bestie, this one's from the Kernel API Manual and it's giving "tiny function, big job" energy 💅 like it literally just turns on the receiver and the transmitter of a port and dips, periodt.

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🌸 NAME 🌸

rio_enable_rx_tx_port — enable input receiver and output transmitter of given port 🫶

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⭐ SYNOPSIS ⭐

int rio_enable_rx_tx_port (struct rio_mport *port , int local , u16
destid , u8 hopcount , u8 port_num );

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🎀 ARGUMENTS 🎀

• port — the master port that's associated with the RIO network 👑
• local — local=1 selects the local port, otherwise a far device gets reached, no cap 🦋
• destid — the Destination ID of the device whose host bit you're checking 🔍
• hopcount — how many hops it takes to reach the target, literally the travel itinerary 🧚
• port_num — the Port (-number on switch) to enable on a far end device 🌈

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💖 DESCRIPTION 💖

so what it does is it returns 0 or 1 from on the General Control Command and Status Register (EXT_PTR+0x3C) — that's the whole vibe check right there, bestie 💀✨

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🦋 SEE ALSO 🦋

Kernel file ./drivers/rapidio/rio.c and honestly the whole friend group:

• 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_map_outb_region(9)
• rio_unmap_outb_region(9)
• rio_mport_get_physefb(9)
• rio_get_comptag(9)
• rio_set_port_lockout(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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that's the whole page bestie, go enable those ports 💜

and finally, mwah 💋 this lil masterpiece lives in ./drivers/rapidio, dated October 2026 — iconic, no notes 🌟