STRUCT SA_CRYPTO_DATA(9)

💖 struct sa_crypto_data(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — this page is literally all about struct sa_crypto_data, which is the driver instance data for the Crypto driver. it's giving "one struct to hold the whole vibe" and honestly? iconic. 🎀

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🌸 NAME 🌸

struct sa_crypto_data — Crypto driver instance data 🦋

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✨ SYNOPSIS ✨

here's the whole squad, member by member, no cuts, no edits, exactly as it lives 👑

struct sa_crypto_data {
    void __iomem *base;
    const struct sa_match_data *match_data;
    struct platform_device  *pdev;
    struct dma_pool         *sc_pool;
    struct device *dev;
    spinlock_t scid_lock;
    u16 sc_id_start;
    u16 sc_id_end;
    u16 sc_id;
    unsigned long   ctx_bm[DIV_ROUND_UP(SA_MAX_NUM_CTX, BITS_PER_LONG)];
    struct sa_tfm_ctx       *ctx;
    struct dma_chan         *dma_rx1;
    struct dma_chan         *dma_rx2;
    struct dma_chan         *dma_tx;
 };

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🧚 Members 🧚

okay so this is the part where we meet everyone individually. main character energy for each and every one of them, fr fr:

• base — the base address of the register space. like the home address of the whole operation 🏠
• pdev — the platform device pointer. it's giving "who am I attached to" 🫶
• sc_pool — the security context pool. yes bestie, a whole pool 💅
• dev — the device pointer. lowkey essential 🌟
• scid_lock — the secure context ID lock. 🔒 do not skip this one, it's holding down the concurrency situation
• sc_id_start — the starting index for SC ID. where the numbering begins, periodt ⭐
• sc_id_end — the ending index for SC ID. where the numbering wraps up, bye 👋
• sc_id — the Security Context ID. the ID itself, the moment ✨
• ctx_bm — a bitmap to keep track of Security context ID's. literally the attendance sheet for which IDs are taken 📋
• ctx — the SA tfm context pointer 🦋
• dma_rx1 — pointer to the DMA rx channel for sizes < 256 Bytes. tiny data, dedicated channel, slay 🍓
• dma_rx2 — pointer to the DMA rx channel for sizes > 256 Bytes. big data gets its own channel, ate 💀
• dma_tx — pointer to the DMA TX channel 🔥

ngl, if you're looking for a write-up of match_data, the original page doesn't give one — so I'm not gonna make one up. it's in the struct, it's chilling, that's the tea 🙈

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🦋 SEE ALSO 🦋

go read these next, bestie, they're all part of the same friend group 💜 — kernel file ./drivers/crypto/sa2ul.h plus these icons:

• struct sa_cmdl_param_info(9)
• struct sa_cmdl_upd_info(9)
• struct sa_ctx_info(9)
• struct sa_tfm_ctx(9)
• struct sa_sha_req_ctx(9)
• struct sa_eng_info(9)

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and that's the whole page, no cap 💖 big kisses from the source at ./drivers/crypto, dated October 2026 — catch you in the next manpage, bestie! 🎀✨🦋