ocs_hcu_hash_update(9)

💫 ocs_hcu_hash_update(9) 💫

okay so bestie, welcome to the kernel API manual for ocs_hcu_hash_update — that's the OCS HCU one, section 9, straight out of the Kernel API Manual. she's a hashing queen and honestly? iconic.

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✨ NAME ✨

ocs_hcu_hash_update — literally just performs one hashing iteration. that's it. that's the whole vibe. 💅

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🦋 SYNOPSIS 🦋

int ocs_hcu_hash_update (struct ocs_hcu_dev *hcu_dev , struct
ocs_hcu_hash_ctx *ctx , const struct ocs_hcu_dma_list *dma_list );

three args, one int coming back at you. slay. 🎀

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🌸 ARGUMENTS 🌸

• hcu_dev — the struct ocs_hcu_dev * pointing at the OCS HCU device you wanna use. like, which one of the devices, bestie. pick one. 🫶
• ctx — the struct ocs_hcu_hash_ctx *, aka the OCS HCU hashing context. it's giving "the memory of what we're hashing so far." ✨
• dma_list — the const struct ocs_hcu_dma_list * that maps the input data to process. think of it as the map that tells the hardware where the actual bytes live. lowkey essential. 🗺️

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🔥 RETURN 🔥

0 on success, and a negative error code otherwise. no cap — success is literally zero and anything else means something went sideways. 😭

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👑 SEE ALSO 👑

kernel file ./drivers/crypto/intel/keembay/ocs-hcu.c — yes, that's where all the lore lives 🧚

the whole friend group, in order:

• struct ocs_hcu_dma_entry(9)
• struct ocs_hcu_dma_list(9)
• ocs_hcu_wait_busy(9)
• ocs_hcu_get_intermediate_data(9)
• ocs_hcu_set_intermediate_data(9)
• ocs_hcu_hw_cfg(9)
• ocs_hcu_clear_key(9)
• ocs_hcu_write_key(9)
• ocs_hcu_ll_dma_start(9)
• ocs_hcu_hash_init(9)
• ocs_hcu_hash_finup(9)
• ocs_hcu_hash_final(9)
• ocs_hcu_digest(9)
• ocs_hcu_hmac(9)

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ok that's the whole page 💖 no skipped options, no deleted references, we keep every detail in this house. periodt.

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sign-off time 🎀 this little masterpiece lives under ./drivers/crypto/intel/keembay, dated October 2026 — and it's page ocs_hcu_hash_update(9) of the Kernel API Manual. go hash something, bestie 💅✨🦋