STRUCT DENALI_CONTROLLER(9)

💖 struct denali_controller(9) 💖

okay so bestie, this is a page from the Kernel API Manual and it's all about struct denali_controller — the Denali NAND controller data. genuinely iconic little struct, let's get into it 🫶

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✨ NAME ✨

struct denali_controller — Denali NAND controller data, no cap 💅

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🦋 SYNOPSIS 🦋

struct denali_controller {
    struct nand_controller controller;
    struct device *dev;
    struct list_head chips;
    unsigned long clk_rate;
    unsigned long clk_x_rate;
    void __iomem *reg;
    void __iomem *host;
    struct completion complete;
    int irq;
    u32 irq_mask;
    u32 irq_status;
    spinlock_t irq_lock;
    bool dma_avail;
    int devs_per_cs;
    int oob_skip_bytes;
    int active_bank;
    int nbanks;
    unsigned int revision;
    unsigned int caps;
    const struct nand_ecc_caps *ecc_caps;
    u32 (*host_read)(struct denali_controller *denali, u32 addr);
    void (*host_write)(struct denali_controller *denali, u32 addr, u32
data);
    void (*setup_dma)(struct denali_controller *denali, dma_addr_t
dma_addr, int page, bool write);
 };

like, look at all those fields, she's serving range 💀✨

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🎀 MEMBERS 🎀

bestie, every single one, in order, let's go 🏃‍♀️💨

• controller — the base NAND controller structure, the main character energy right at the top 👑
• dev — the device 🌸
• chips — the list of chips attached to this controller, her little squad fr fr
• clk_rate — frequency of core clock ⏰
• clk_x_rate — frequency of bus interface clock, yes there's a second clock, she's got layers 🦋
• reg — base of Register Interface
• host — base of Host Data/Command interface
• complete — completion used to wait for interrupts, lowkey just sitting there waiting for a text back 😭
• irq — interrupt number
• irq_mask — interrupt bits the controller is waiting for
• irq_status — interrupt bits of events that have happened, the receipts 📝
• irq_lock — lock to protect irq_mask and irq_status, keep those two safe bestie 🔒
• dma_avail — set if DMA engine is available ✅
• devs_per_cs — number of devices connected in parallel
• oob_skip_bytes — number of bytes in OOB skipped by the ECC engine
• active_bank — active bank id 🏦
• nbanks — the number of banks supported by this controller
• revision — IP revision
• caps — controller capabilities that cannot be detected run-time 👀
• ecc_caps — ECC engine capabilities ✨
• host_read — callback for read access of Host Data/Command Interface
• host_write — callback for write access of Host Data/Command Interface
• setup_dma — callback for setup of the Data DMA 🔥

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🌈 SEE ALSO 🌈

go check out the Kernel file ./drivers/mtd/nand/raw/denali.h, plus struct denali_chip_sel(9) and struct denali_chip(9) — they're all in the ./drivers/mtd/nand/raw directory and honestly they ate 💅✨

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ngl bestie, this whole page lives under ./drivers/mtd/nand/raw — that's the neighborhood 🏡

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okay that's the whole thing, ily, go read the source 🫶💖

— sourced from ./drivers/mtd/nand/raw, dated October 2026, with the header calling it struct denali_controller(9) and the footer too. slay, periodt, bye 🎀🌟