afu_mmio_reg...get_by_index(9)

🌸 afu_mmio_reg...get_by_index(9) 🌸

okay so bestie, welcome to the Kernel API Manual ✨ — yes, that's the manual name, and yes, we're reading it together, hand in hand 🫶. This one's a little function finder, and honestly? she's giving helpful sidekick energy. Let's get into it 💅

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✨ NAME ✨

afu_mmio_region_get_by_index — find an afu region by index 💫

like, you give her a number and she goes and fetches the matching region. iconic behaviour, no notes.

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🦋 SYNOPSIS 🦋

int afu_mmio_region_get_by_index (struct dfl_feature_dev_data *fdata ,
u32 region_index , struct dfl_afu_mmio_region *pregion );

that's the whole vibe right there ⭐ three args in, an int out. look at her go 😭

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🎀 ARGUMENTS 🎀

• fdata — the afu feature dev data 💖 this is your feature device data, the main character of the whole show.
• region_index — the region index. that's it. that's the whole description 😭 it's the index of the region, bestie, we all know what an index is ✨
• pregion — ptr to region for result 🌸 a pointer to where the region gets dropped off when she's done. she fills it in, you read it, everyone slays.

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🔥 RETURN 🔥

returns 0 on success, and a negative error code otherwise — so like, check it, okay? don't just vibe and assume it worked 💀

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🌈 SEE ALSO 🌈

• kernel file ./drivers/fpga/dfl-afu-region.c — that's where she lives 🏠
• afu_mmio_region_init(9)
• afu_mmio_region_add(9)
• afu_mmio_region_destroy(9)
• afu_mmio_region_get_by_offset(9) ← her sibling, gets regions by offset instead of index, iykyk 🧚

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heads up bestie: the SEE ALSO list and that kernel file path are literal — copy them exactly if you're citing them, okay? no autocorrect shenanigans 💅

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and that's the page!! 🍓 lowkey a short one but she ate fr fr. came to you from ./drivers/fpga, dated October 2026 — mwah, love that for us 👑💜