STRUCT OCS_HCU_DMA_ENTRY(9)

💖 struct ocs_hcu_dma_entry(9) 💖

Okay bestie, so this is from the Kernel API Manual and it's literally the glow-up of DMA linked list entries. No cap, this struct is giving main character energy in the OCS world.

---

✨ NAME ✨

struct ocs_hcu_dma_entry — an entry in an OCS DMA linked list. Periodt. That's it. That's the whole vibe. 💅

---

🌸 SYNOPSIS 🌸

struct ocs_hcu_dma_entry {
    u32 src_addr;
    u32 src_len;
    u32 nxt_desc;
    u32 ll_flags;
 };

Like, look at her. Four u32 fields, zero drama, all iconic. 🎀

---

🦋 Members 🦋

• src_addr — source address of the data. Like, where the data is coming from, bestie. The origin story. ✨
• src_len — length of data to be fetched. How much we're grabbing. The way that this just tells you the size, we love to see it. 📏
• nxt_desc — next descriptor to fetch. It's giving linked list energy — follow the chain, iykyk. 🔗
• ll_flags — flags (Freeze terminate) for the DMA engine. Yes, "Freeze" with a capital F, and "terminate" lowercase — that's exactly how it's written, don't come for me. These flags are lowkey controlling the whole operation. 🚦

---

👑 SEE ALSO 👑

You already know we're linking the whole squad. Check these out, bestie:

• Kernel file ./drivers/crypto/intel/keembay/ocs-hcu.c
• 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_update(9)
• ocs_hcu_hash_finup(9)
• ocs_hcu_hash_final(9)
• ocs_hcu_digest(9)
• ocs_hcu_hmac(9)

Fr fr, that's the whole friend group right there. 🫶

---

This page lives at ./drivers/crypto/intel/keembay, dated October 2026, and it's all about struct ocs_hcu_dma_entry(9). Slay. 💀✨

Stay hydrated and may your descriptors always point somewhere valid, bestie. 💜🌈