tsi721_dsend(9)

💅 tsi721_dsend — rapidio girlie edition ✨

okay so this is a page from the Kernel API Manual, bestie — tsi721_dsend(9) — and it's lowkey one of the shortest ones in the whole tsi721 family, so we're gonna get through it together real fast 🫶

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✨ NAME ✨

tsi721_dsend — literally just send a RapidIO doorbell 🔔 no cap, that's the whole vibe.

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🎀 SYNOPSIS 🎀

int tsi721_dsend (struct rio_mport *mport , int index , u16 destid , u16
data );

four little arguments, one int coming back at you. she's compact, she's iconic 💖

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🌸 ARGUMENTS 🌸

• mport — the RapidIO master port info, aka the whole personality of the port you're working with ✨
• index — the ID of the RapidIO interface. like, which one, bestie 🦋
• destid — destination ID of the target device, so the doorbell actually rings at the right house 🏠
• data — the 16-bit info field of the RapidIO doorbell. yes, 16-bit, keep it in that box fr fr 📦

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💫 DESCRIPTION 💫

Sends a RapidIO doorbell message. that's it. that's the whole description 😭 she's a one-liner and she knows it 👑

like, it sends the doorbell. ding dong. rapidio. done 🛎️💅

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🔥 RETURN 🔥

returns 0. just 0. not a whole essay, not an error code saga — 0 and she's out 🙈

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⭐ SEE ALSO ⭐

the kernel file lives at ./drivers/rapidio/devices/tsi721.c, and ngl the whole friend group is listed here so let's do attendance 📋:

• tsi721_lcread(9)
• tsi721_lcwrite(9)
• tsi721_maint_dma(9)
• tsi721_cread_dma(9)
• tsi721_cwrite_dma(9)
• tsi721_pw_handler(9)
• tsi721_pw_enable(9)
• tsi721_dbell_handler(9)
• tsi721_irqhandler(9)
• tsi721_omsg_msix(9)
• tsi721_imsg_msix(9)
• tsi721_srio_msix(9)
• tsi721_sr2pc_ch_msix(9)
• tsi721_request_msix(9)
• tsi721_enable_msix(9)
• tsi721_init_pc2sr_mapping(9)
• tsi721_rio_map_inb_mem(9)
• tsi721_rio_unmap_inb_mem(9)
• tsi721_init_sr2pc_mapping(9)
• tsi721_port_write_init(9)
• tsi721_bdma_maint_init(9)
• tsi721_add_outb_message(9)
• tsi721_omsg_handler(9)
• tsi721_open_outb_mbox(9)
• tsi721_close_outb_mbox(9)
• tsi721_imsg_handler(9)
• tsi721_open_inb_mbox(9)
• tsi721_close_inb_mbox(9)
• tsi721_add_inb_buffer(9)
• tsi721_get_inb_message(9)
• tsi721_messages_init(9)
• tsi721_query_mport(9)
• tsi721_disable_ints(9)
• tsi721_setup_mport(9)

every single one accounted for, nobody left on read 💅✅

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ok that's the whole page, she's tiny but she ate 💖

and a lil sign-off for the credits screen 🎬 — this one comes from ./drivers/rapidio/devices, dated October 2026, manual name tsi721_dsend(9). slay, bye bestie 🦋🌸