STRUCT BRCMF_FIRMWARE_MAPPING(9)

💅 struct brcmf_firmware_mapping(9)

okay so first things first bestie, this is a page from the Kernel API Manual — section 9, the "kernel API" girlies ✨ — and it's all about struct brcmf_firmware_mapping. periodt.

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🌸 NAME 🌸

struct brcmf_firmware_mapping — bestie, this struct is literally the matchmaker that maps chipid/revmask to a firmware filename and an nvram filename 🎀

And like, the important part: every single bus type implementation should go ahead and create a table of firmware mappings — using the macros defined below, iykyk. no cap. 💅

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✨ SYNOPSIS ✨

struct brcmf_firmware_mapping {
    u32 chipid;
    u32 revmask;
    const char *fw_base;
 };

look at her. three fields. main character energy. 👑

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🦋 Members 🦋

• chipid — the ID of the chip. that's it, that's the vibe check. 🫶
• revmask — a bitmask of revisions, and the examples are kinda iconic ngl:
  • 0x10 means rev 4 only
  • 0xf means rev 0-3

literally a little bitmask baddie. 🔥

and yes, fw_base is right there in the struct, but the page doesn't hand you a member description for it — so I'm not gonna make one up. we stay honest on this blog. 🙈

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💖 SEE ALSO 💖

• Kernel file ./drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h — go read the source, it's giving very "the real answers are in the header file" energy. 📚✨

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so that's the whole struct, bestie — chip id, revision bitmask, firmware base, and a table your bus type implementation is absolutely supposed to build. slay. 💅🌈

💌 cute sign-off: this one's straight out of ./drivers/net/wireless/broadco..., dated October 2026, and it'll forever be known as struct brcm...ware_mapping(9) (the terminal truncated it, not me, blame the width 😭). bye bestie, happy hacking! 🎀🦋💜