STRUCT MV_CESA_TDMA_DESC(9)

🌸 NAME 🌸

okay bestie, this is struct mv_cesa_tdma_desc(9) from the Kernel API Manual 💅. It’s the TDMA descriptor page, and it’s literally about the descriptor used to build a transfer chain describing a crypto operation. No cap.

• struct mv_cesa_tdma_desc — TDMA descriptor 🎀

✨ SYNOPSIS ✨

Here’s the exact struct shape, bestie — don’t let the anonymous unions jump-scare you 😭:

       struct mv_cesa_tdma_desc {
           __le32 byte_cnt;
           union {
             __le32 src;
             u32 src_dma;
           };
           union {
             __le32 dst;
             u32 dst_dma;
           };
           __le32 next_dma;
           dma_addr_t cur_dma;
           struct mv_cesa_tdma_desc *next;
           union {
             struct mv_cesa_op_ctx *op;
             void *data;
           };
           u32 flags;
        };

🎀 Members 🎀

Member-by-member vibe check, coming right up 👑:

• byte_cnt — number of bytes to transfer 💫
• {unnamed_union} — anonymous (yep, the manpage literally calls it that 🙈)
• src — DMA address of the source
• {unnamed_union} — anonymous
• dst — DMA address of the destination
• next_dma — DMA address of the next TDMA descriptor
• cur_dma — DMA address of this TDMA descriptor
• next — pointer to the next TDMA descriptor
• {unnamed_union} — anonymous
• op — CESA operation attached to this TDMA descriptor
• data — raw data attached to this TDMA descriptor
• flags — flags describing the TDMA transfer. See the "TDMA descriptor flags" section above 🔥

🦋 Description 🦋

This is the TDMA descriptor used to create a transfer chain describing a crypto operation. That’s the whole assignment, bestie — it’s giving “descriptor with main character energy” ✨.

👑 SEE ALSO 👑

Kernel file: ./drivers/crypto/marvell/cesa/cesa.h — and here’s the whole linked fam, no skipping 🫶:

• struct mv_cesa_sec_accel_desc(9)
• struct mv_cesa_skcipher_op_ctx(9)
• struct mv_cesa_hash_op_ctx(9)
• struct mv_cesa_op_ctx(9)
• struct mv_cesa_sg_dma_iter(9)
• struct mv_cesa_dma_iter(9)
• struct mv_cesa_tdma_chain(9)
• struct mv_cesa_caps(9)
• struct mv_cesa_dev_dma(9)
• struct mv_cesa_engine(9)
• struct mv_cesa_dev(9)
• struct mv_cesa_req_ops(9)
• struct mv_cesa_ctx(9)
• struct mv_cesa_hash_ctx(9)
• enum mv_cesa_req_type(9)
• struct mv_cesa_req(9)
• struct mv_cesa_sg_std_iter(9)
• struct mv_cesa_skcipher_std_req(9)
• struct mv_cesa_skcipher_req(9)
• struct mv_cesa_ahash_std_req(9)
• struct mv_cesa_ahash_dma_req(9)
• struct mv_cesa_ahash_req(9)

that’s the page, bestie 💖 source/version: ./drivers/crypto/marvell/cesa, dated October 2026. go build that transfer chain and slay ✨