mmu_reg_load(9)

💅 mmu_reg_load — read a lil' control register from MMU[ID]

okay so bestie, welcome to the Kernel API Manual ✨ this one's a tiny little function page and honestly? it ate. it's giving "small but mighty" energy, and we're gonna get you across it in like thirty seconds, no cap 🫶

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🎀 NAME 🎀

mmu_reg_load — Read from a control register of MMU[ID] 💖

like literally that's it, that's the whole vibe. you point at an MMU, you point at a register index, and it hands you the data back. iconic behaviour. 🔥

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✨ SYNOPSIS ✨

hrt_data mmu_reg_load (const mmu_ID_t ID , const unsigned int reg );

look at that signature, she's so clean 😭 <rainbow>hrt_data</rainbow> in, two const args, done. no drama, no surprises, we love a low-maintenance queen 👑

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🦋 ARGUMENTS 🦋

• ID — the MMU identifier 💫 like, which MMU are we talking to? you gotta tell her. there are multiple of these bad girls and she's not gonna guess, bestie.
• reg — the register index 🌸 the exact lil' slot inside that MMU you wanna peek at. precision matters, iykyk.

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🌈 RETURN 🌈

MMU[ID].ctrl[reg] 💖

no cap, that's the whole return value: the control register at that index, from that MMU. she gives it back to you, plain and simple, and honestly? we stan a function that doesn't overcomplicate things ✨

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👑 SEE ALSO 👑

• Kernel file 📁 ./drivers/staging/media/atomisp/pci/hive_isp_css_include/host/mmu_public.h — yeah, that path is a whole journey, but that's where she lives 🧚
• mmu_set_page_table_base_index(9) — the setter bestie for the page table base index 💜
• mmu_get_page_table_base_index(9) — and her getter counterpart, they're a matched set 🎀
• mmu_invalidate_cache(9) — cache invalidation, the classic 😭
• mmu_invalidate_cache_all(9) — same energy but all of it, go big or go home 💅
• mmu_reg_store(9) — the write-y sibling!! if mmu_reg_load is the reader, this one's the writer, and honestly they should be read together 🫶

ngl, if you're poking around MMU registers you probably want the whole little friend group above, not just this one. just saying 💀

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⭐ and that's the page!! short, sweet, slayed.

source/version: from the atomisp driver tree — like literally ./drivers/staging/media/atomis... and friends — dated October 2026 🗓️ and the page itself is mmu_reg_load(9), in case you forgot already 🙈

mwah, go read some registers bestie 💋✨