rsi_issue_sdiocommand(9)

✨ rsi_issue_sdiocommand — the kernel API manual, but make it make sense 🎀

okay so bestie, you're in the kernel API manual (the 9 section, the big-leagues one 👑) and you've stumbled onto rsi_issue_sdiocommand. Yeah. Say it with me. It's giving "the one who actually sends the SDIO commands" energy, and honestly? Iconic.

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🌸 NAME 🌸

rsi_issue_sdiocommand — literally this function issues sdio commands. That's it. That's the whole vibe. No cap, it does exactly what it says on the tin, periodt. 💅

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🦋 SYNOPSIS 🦋

int rsi_issue_sdiocommand (struct sdio_func *func , u32 opcode , u32 arg
, u32 flags , u32 *resp );

look at her. five parameters, one int coming back at you. main character signature fr fr ✨

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💖 ARGUMENTS 💖

okay so here's the group chat roll call, everybody gets a line, nobody gets skipped:

• func — pointer to the struct sdio_func structure. yeah, that one. your SDIO function, your whole personality here 💅
• opcode — the opcode value. what command are we even doing, bestie? this tells you.
• arg — the arguments to pass. the baggage. the lore. 🧳
• flags — the flags which are set. which ones are set? these ones. the set ones. 🚩
• resp — pointer to store the response. where the answer goes to live. drop it in, she's waiting 🫶

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🔥 RETURN 🔥

err: the command status, as 0 or -1. that's a vibe check in integer form — either you ate 💅 or you did not 😭.

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🌈 SEE ALSO 🌈

the whole friend group, no one left behind — kernel file first, then the whole crew:

• ./drivers/net/wireless/rsi/rsi_91x_sdio.c — the kernel file, go read her, she's the source 🍓

and then, in order:

• rsi_sdio_set_cmd52_arg(9)
• rsi_cmd52writebyte(9)
• rsi_cmd52readbyte(9)
• rsi_handle_interrupt(9)
• rsi_reset_card(9)
• rsi_setclock(9)
• rsi_setblocklength(9)
• rsi_setupcard(9)
• rsi_sdio_read_register(9)
• rsi_sdio_write_register(9)
• rsi_sdio_ack_intr(9)
• rsi_sdio_read_register_multiple(9)
• rsi_sdio_write_register_multiple(9)
• rsi_sdio_host_intf_write_pkt(9)
• rsi_sdio_host_intf_read_pkt(9)
• rsi_init_sdio_interface(9)
• rsi_probe(9)
• rsi_disconnect(9)

eighteen of them. eighteen. and you thought your group chat was big 💀

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ngl bestie, that's the whole page — every argument, every reference, nothing dropped. consuming manpages responsibly, as one does 🧚

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and that's the tea: ./drivers/net/wireless/rsi, October 2026 edition, serving rsi_issue_sdiocommand(9) realness. mwah 💜✨