bnx2x_get_emac_base(9)

💅 bnx2x_get_emac_base 💅

okay so bestie, welcome to the bnx2x_get_emac_base(9) page — yeah it's a kernel API manual, yeah we're doing this, and yeah you're gonna get it 💖

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🎀 NAME 🎀

bnx2x_get_emac_base — retrive emac base address ✨ (that spelling is the original's, not mine, iykyk 🙈)

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🌸 SYNOPSIS 🌸

u32 bnx2x_get_emac_base (struct bnx2x *bp , u32 mdc_mdio_access , u8
port );

literally just one function, three args, and it hands you back a u32, periodt 💅

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🦋 ARGUMENTS 🦋

• bp — the driver handle, obvs. your main character struct pointer 🫶
• mdc_mdio_access — the access type, like which flavor of access we're doing here 👑
• port — the port id, bestie. which port. yes it matters 🌈

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⭐ DESCRIPTION ⭐

okay so here's the vibe 🔥 this function picks the MDC/MDIO access — and by "picks" i mean it goes through emac0 or emac1 — depend on the mdc_mdio_access, the port, and whether the port got swapped. the way that it's all interdependent?? iconic ✨

ngl every phy has a default access mode, and that default could also be overridden by nvram configuration 👀 so there's two possible sources for this thing, fr fr.

this parameter — whether it's the default phy configuration OR the nvram overrun configuration — is passed here as mdc_mdio_access, and that's what selects the emac_base for the CL45 read/writes operations 💜

so like: access type in → emac_base out → CL45 read/writes get their base. slay, honestly 🎀

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💀 SEE ALSO 💀

the kernel file, go look at it, it's giving source of truth:

./drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c

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🌸 tiny reminder that this whole page is just the one function and the one file — no extra lore, no secret options, that's the whole menu bestie 💖

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and that's the whole page!! 🧚‍♀️ this lil writeup is from the Kernel API Manual, dated October 2026, and the footer got cut off mid-path like ./drivers/net/ethernet/broadco... — so shoutout to whoever's reading this from the future, love u, bye bestie 🫶💖✨