STRUCT NFP_BAR(9)

✨ struct nfp_bar — the BAR config queen 👑

okay so bestie, let me introduce you to struct nfp_bar — it literally describes BAR configuration and usage and it's giving main character energy for sure 💅

🌸 SYNOPSIS 🌸

here's the whole vibe, exactly as it is, no cap:

struct nfp_bar {
    struct nfp6000_pcie *nfp;
    u32 barcfg;
    u64 base;
    u64 mask;
    u32 bitsize;
    int index;
    atomic_t refcnt;
    void __iomem *iomem;
    struct resource *resource;
 };

🎀 Members 🎀

like, every single one of them, let's go:

• nfp — backlink to the owner, iykyk 🫶 this is the pointer home
• barcfg — cached contents of the BAR config CSR, literally a lil saved copy
• base — the BAR's base CPP offset, that's the starting point bestie ✨
• mask — mask for the BAR aperture, and ngl it's read only so don't even try
• bitsize — bitsize of the BAR aperture, also read only 🙈
• index — index of the BAR, its own lil number
• refcnt — number of current users, an atomic_t keeping count of who's using it
• iomem — mapped IO memory, a void __iomem *
• resource — iomem resource window, a struct resource *

🦋 SEE ALSO 🦋

• Kernel file ./drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000_pcie.c
• nfp_cpp_from_nfp6000_pcie(9)

that's the whole page babes 🧚 go read that kernel file, it's iconic 🌈

sign-off time 💖 this cutie came from ./drivers/net/ethernet/netrono... and it's dated October 2026 — struct nfp_bar(9), periodt ✨👑