lpfc_read_rev(9)

🌸 lpfc_read_rev(9) — the Emulex/HBA revision-reading baddie 💅

okay so bestie, you're in the Kernel API Manual (yes, the 9 section, kernel internals only, we're built different here) and today's main character is lpfc_read_rev. It's giving "glow-up for your mailbox command." Let's go 🫶

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✨ NAME ✨

lpfc_read_rev — literally just preps a mailbox command so the driver can read the HBA revision. That's it, that's the vibe. 🎀

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⭐ SYNOPSIS ⭐

void lpfc_read_rev (struct lpfc_hba * phba , LPFC_MBOXQ_t * pmb );

Returns nothing babe, it's a void girlie. No cap. 💀

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🦋 ARGUMENTS 🦋

• phba — pointer to the lpfc hba data structure. like, your HBA. the one you're obsessed with. 👑
• pmb — pointer to the driver internal queue element for the mailbox command. this is the lil vessel the command rides in, iykyk 🌈

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💖 DESCRIPTION 💖

so the read revision mailbox command is the one that goes and reads the revision levels of the HBA components — and those components are, specifically:

• hardware units 🔥
• resident firmware 🌸
• available firmware ⭐

and here's the tea ☕: HBAs that support SLI-3 mode of operation give you different response information depending on the version requested by the driver. so like, same command, different answers, depending on what version you asked for. the way that works is iconic honestly.

This routine's whole job is preparing the mailbox command for reading that HBA revision information. prep work. main character energy in the supporting role. periodt. 💅

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💜 SEE ALSO 💜

these are the siblings, the extended universe, the whole friend group — and bestie, there are so many of them, we're listing every single one because we don't do half-finished here 🧚

Kernel file ./drivers/scsi/lpfc/lpfc_mbox.c

• lpfc_mbox_rsrc_prep(9)
• lpfc_mbox_rsrc_cleanup(9)
• lpfc_dump_static_vport(9)
• lpfc_down_link(9)
• lpfc_dump_mem(9)
• lpfc_dump_wakeup_param(9)
• lpfc_read_nv(9)
• lpfc_config_async(9)
• lpfc_heart_beat(9)
• lpfc_read_topology(9)
• lpfc_clear_la(9)
• lpfc_config_link(9)
• lpfc_config_msi(9)
• lpfc_init_link(9)
• lpfc_read_sparam(9)
• lpfc_unreg_did(9)
• lpfc_read_config(9)
• lpfc_read_lnk_stat(9)
• lpfc_reg_rpi(9)
• lpfc_unreg_login(9)
• lpfc_sli4_unreg_all_rpis(9)
• lpfc_reg_vpi(9)
• lpfc_unreg_vpi(9)
• lpfc_config_pcb_setup(9)
• lpfc_build_hbq_profile2(9)
• lpfc_build_hbq_profile3(9)
• lpfc_build_hbq_profile5(9)
• lpfc_config_hbq(9)
• lpfc_config_ring(9)
• lpfc_config_port(9)
• lpfc_kill_board(9)
• lpfc_mbox_put(9)
• lpfc_mbox_get(9)
• __lpfc_mbox_cmpl_put(9)
• lpfc_mbox_cmpl_put(9)
• lpfc_mbox_cmd_check(9)
• lpfc_mbox_dev_check(9)
• lpfc_mbox_tmo_val(9)
• lpfc_sli4_mbx_sge_set(9)
• lpfc_sli4_mbx_sge_get(9)
• lpfc_sli4_mbox_cmd_free(9)
• lpfc_sli4_config(9)
• lpfc_sli4_mbox_rsrc_extent(9)
• lpfc_sli_config_mbox_subsys_get(9)
• lpfc_sli_config_mbox_opcode_get(9)
• lpfc_sli4_mbx_read_fcf_rec(9)
• lpfc_request_features(9)
• lpfc_init_vfi(9)
• lpfc_reg_vfi(9)
• lpfc_init_vpi(9)
• lpfc_unreg_vfi(9)
• lpfc_sli4_dump_cfg_rg23(9)
• lpfc_reg_fcfi(9)
• lpfc_reg_fcfi_mrq(9)
• lpfc_unreg_fcfi(9)
• lpfc_resume_rpi(9)

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and that's the whole page, bestie!! 💜 no crumbs left, every flag-free, option-free, argument-having detail preserved. this little corner of the kernel lives in ./drivers/scsi/lpfc, and the page itself is dated October 2026 — yes, from the future 🦋✨ signed off with love, slay, and zero skipped lines. mwah 🎀💖