STRUCT DPAA2_IO_DESC(9)

👑 struct dpaa2_io_desc(9) 👑

okay bestie, welcome to the Kernel API Manual section where we meet the DPIO descriptor itself — struct dpaa2_io_desc, the little glow-up sheet that describes the attributes and features of the DPIO object. she's giving main character energy in ./include/soc/fsl/dpaa2-io.h and honestly? icon. 🦋

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✨ SYNOPSIS ✨

here's the whole struct, bestie, copied exactly, no cap:

struct dpaa2_io_desc {
    int receives_notifications;
    int has_8prio;
    int cpu;
    void *regs_cena;
    void __iomem *regs_cinh;
    int dpio_id;
    u32 qman_version;
    u32 qman_clk;
 };

like look at her. eight fields. all of them matter. 💅

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🌸 Members 🌸

• receives_notifications — notification mode, bestie. non-zero means the DPIO has a channel. yes, that's a whole vibe.
• has_8prio — set this to non-zero for a channel with 8 priority WQs. 🎀 but listen — it's ignored unless receives_notification is TRUE. so don't be out here setting it and expecting it to do anything on its own, fr fr.
• cpu — the cpu index that at least the interrupt handlers will execute on. that's her whole assigned era.
• regs_cena — the cache enabled regs. ✨
• regs_cinh — the cache inhibited regs. opposite twin, we stan both.
• dpio_id — the dpio index. short, sweet, iconic.
• qman_version — the qman version. she's a u32, she's got range.
• qman_clk — the qman clock frequency, in Hz. noted. 🫶

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💜 Description 💜

literally just: describes the attributes and features of the DPIO object. that's the whole job. she's a descriptor. she describes. ate and left no crumbs. 🔥

lowkey important: this struct is the receipt for the DPIO object — the attributes and the features, both, in one place. iykyk. 👑

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🌈 SEE ALSO 🌈

• Kernel file ./include/soc/fsl/dpaa2-io.h
• DPIO Service(9)
• struct dpaa2_io_notification_ctx(9)

go read those next, bestie — the notification ctx one is right there in the name and it's lowkey connected. 💖

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and that's the page! 🧚 from ./include/soc/fsl, dated October 2026, and it's struct dpaa2_io_desc(9) — mwah, slay, bye 💅🌸