STRUCT CS_DSP_CHUNK(9)

💖 struct cs_dsp_chunk(9) 💖

okay so bestie, welcome to the Kernel API Manual entry for struct cs_dsp_chunk(9) — yes the whole page is literally named after the struct, that's the vibe. this is the lowkey glossary moment where the kernel explains itself to you, and honestly? she ate. 🎀

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✨ NAME ✨

struct cs_dsp_chunk — describes a buffer holding data formatted for the DSP 🦋

like, it's the little container that carries data around while it's getting all dressed up in the DSP's preferred format. main character energy fr fr.

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✨ SYNOPSIS ✨

struct cs_dsp_chunk {
    u8 *data;
    u8 *max;
    int bytes;
    u32 cache;
    int cachebits;
 };

not me presenting the whole struct like a lineup 💅 five members, all iconic, all doing their thing. details below, no skips.

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✨ Members ✨

• data — pointer to the underlying buffer memory 🌸 like, the actual raw memory she's living in. this is the ground floor.
• max — pointer to the end of the buffer memory 🫶 the boundary. the limit. the "you shall not pass" of this buffer.
• bytes — number of bytes read/written into the memory chunk ⭐ so like, the running tally of how much stuff has actually gone in or come out.
• cache — temporary holding data as it is formatted 🎀 a lil waiting room for data mid-glow-up.
• cachebits — number of bits of data currently in cache 💜 exactly what it sounds like: how many bits are currently chilling in there.

ngl, data/max/bytes are your classic buffer trio, and cache/cachebits are the backstage crew making the formatting happen. all five matter, don't skip any. 😭

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✨ SEE ALSO ✨

kernel file ./include/linux/firmware/cirrus/cs_dsp.h and honestly the whole friend group:

• struct cs_dsp_region(9)
• struct cs_dsp_alg_region(9)
• struct cs_dsp_coeff_ctl(9)
• struct cs_dsp(9)
• struct cs_dsp_client_ops(9)
• struct cs_dsp_wseq(9)
• cs_dsp_chunk(9)
• cs_dsp_chunk_end(9)
• cs_dsp_chunk_bytes(9)
• cs_dsp_chunk_valid_addr(9)

iykyk — that's the whole cirrus firmware squad, go read them all 🔥

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okay that's the whole page bestie!! 💖 this one came from ./include/linux/firmware/cirrus, dated October 2026, and it's filed under struct cs_dsp_chunk(9) in the kernel docs. go forth and format your DSP data, you absolute legend 👑🌈✨