qed_wr(9)

💅 qed_wr(9) — the Kernel API Manual, bestie edition 🎀

okay so this is a page from the Kernel API Manual, and we're talking about qed_wr. Yes, the name is literally "qed write" — it's the "put a value somewhere in the BAR" girlie of the qlogic qed driver. Let's get into it ✨

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🌸 NAME 🌸

qed_wr — writes a value to BAR using the given ptt. That's it, that's the whole job, and she does it slayfully 💅

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✨ SYNOPSIS ✨

void qed_wr (struct qed_hwfn *p_hwfn , struct qed_ptt *p_ptt , u32
hw_addr , u32 val );

literally just copy-paste this into your brain, no cap 🫶

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💖 ARGUMENTS 💖

• p_hwfn — the HW device data. the main character of the whole operation honestly, she holds all the hardware lore 👑
• p_ptt — the P_ptt. iconic, mysterious, absolutely essential, do not forget her 🦋
• hw_addr — the HW address. this is the "where" of it all 📍
• val — the Val. the "what". the payload. the moment. the reason we're all here ⭐

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🧚 RETURN 🧚

Void. nothing comes back. it gives nothing and takes nothing (well, it takes your value and puts it in the BAR, but like, energetically? void) 💀

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🔥 SEE ALSO 🔥

okay so the source of all this wisdom lives in the kernel file ./drivers/net/ethernet/qlogic/qed/qed_hw.h — and here's the whole bestie squad of related functions, no gatekeeping here:

• qed_gtt_init(9)
• qed_ptt_pool_alloc(9)
• qed_ptt_pool_free(9)
• qed_ptt_get_hw_addr(9)
• qed_ptt_get_bar_addr(9)
• qed_ptt_set_win(9)
• qed_get_reserved_ptt(9)
• qed_rd(9)
• qed_memcpy_from(9)
• qed_memcpy_to(9)
• qed_fid_pretend(9)
• qed_port_pretend(9)
• qed_port_unpretend(9)
• qed_port_fid_pretend(9)
• qed_vfid_to_concrete(9)
• qed_dmae_idx_to_go_cmd(9)
• qed_dmae_info_alloc(9)
• qed_dmae_info_free(9)
• qed_hw_err_notify(9)

like, the entire friend group showed up to the function reference party and everyone ate 🍓

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lowkey a vibe check for you: the whole thing comes from ./drivers/net/ethernet/qlogic/qed, dated October 2026 — so yeah, this manual page is from the future and she knows it 🌈 iykyk

and that's the page, bestie — qed_wr(9), written, dated October 2026, signed off by the ./drivers/net/ethernet/qlogic/qed girlies themselves. periodt 💜