rio_mport_get_feature(9)

✨ NAME ✨

okay bestie, this is rio_mport_get_feature(9) straight outta the Kernel API Manual, and it is literally here to query for devices' extended features 💅💖

• rio_mport_get_feature — query for devices' extended features ✨

🎀 SYNOPSIS 🎀

u32 rio_mport_get_feature (struct rio_mport * port , int local , u16
       destid , u8 hopcount , int ftr );

🦋 ARGUMENTS 🦋

• port — master port to issue transaction. main character port energy, fr fr.
• local — indicate a local master port or remote device access. iykyk.
• destid — destination ID of the device. the addy, basically.
• hopcount — number of switch hops to the device. count 'em, bestie.
• ftr — extended feature code. the feature-code moment.

💖 DESCRIPTION 💖

This is the vibe check: it tells you if a device supports a given RapidIO capability. The way it returns stuff is that it gives you the offset of the requested extended feature block within the device's RIO configuration space, or 0 in case the device does not support it. periodt. 💅

🌈 SEE ALSO 🌈

Also peep the kernel file ./drivers/rapidio/rio.c — and honestly the whole RapidIO friend group is here, no cap:

• 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_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_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)

source/version footer moment: this one lives under ./drivers/rapidio and is dated October 2026 — hope that helped, bestie, mwah 💋✨