megasas_fire_cmd_fusion(9)

💅 megasas_fire_cmd_fusion(9) — the "send the command to the FW" girlie ✨

okay so real talk, this is a page straight outta the Kernel API Manual, and it's all about megasas_fire_cmd_fusion — yes bestie, "fire" is literally in the name, and honestly? iconic. 🔥 This one's whole job is yeeting a command over to the firmware. Let's get into it 🫶

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✨ NAME ✨

megasas_fire_cmd_fusion — Sends command to the FW 💌

like, that's it. that's the whole vibe. it sends the command. to the FW. no cap. 🎀

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🦋 SYNOPSIS 🦋

void megasas_fire_cmd_fusion (struct megasas_instance *instance , union
MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc );

returns void, so like… it does the thing and doesn't even ask for a thank you. main character energy fr fr 👑

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🌸 ARGUMENTS 🌸

• instance — the adapter soft state 💖 like, the whole adapter's situation, its little soft-state bestie. you gotta hand it over so it knows which one we're talking about.
• req_desc — the request descriptor, and it's a 32bit or 64bit one 🎀 (depends on the situation, more on that in a sec, iykyk)

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⭐ DESCRIPTION ⭐

so what actually happens? it performs a PCI Write. that's the move. that's the whole slay. 💅

and here's the descriptor tea ☕ — AERO SERIES supports the 32 bit Descriptor. and Prior to AERO_SERIES, it supports the 64 bit Descriptor. so like, AERO_SERIES = 32-bit era, everything before it = 64-bit era. the way that versioning just flips your whole descriptor size… not me getting emotional about hardware generations 😭

ngl, keep an eye on which series you're on, because the descriptor width literally depends on it — 32 bit for AERO SERIES, 64 bit for Prior to AERO_SERIES. don't mix it up bestie 🙈

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🧚 SEE ALSO 🧚

start with the kernel file itself, she lives right here:

• Kernel file ./drivers/scsi/megaraid/megaraid_sas_fusion.c 📁

and then the whole friend group 🌈 (this is a long list, but every single one of them made the cut, no gatekeeping here):

• megasas_adp_reset_wait_for_ready(9)
• megasas_check_same_4gb_region(9)
• megasas_enable_intr_fusion(9)
• megasas_disable_intr_fusion(9)
• megasas_get_cmd_fusion(9)
• megasas_return_cmd_fusion(9)
• megasas_write_64bit_req_desc(9)
• megasas_fusion_update_can_queue(9)
• megasas_free_cmds_fusion(9)
• megasas_create_sg_sense_fusion(9)
• megasas_alloc_cmds_fusion(9)
• wait_and_poll(9)
• megasas_ioc_init_fusion(9)
• megasas_sync_pd_seq_num(9)
• megasas_allocate_raid_maps(9)
• megasas_configure_queue_sizes(9)
• megasas_free_ioc_init_cmd(9)
• megasas_init_adapter_fusion(9)
• megasas_fault_detect_work(9)
• map_cmd_status(9)
• megasas_is_prp_possible(9)
• megasas_make_prp_nvme(9)
• megasas_make_sgl_fusion(9)
• megasas_make_sgl(9)
• megasas_set_pd_lba(9)
• megasas_stream_detect(9)
• megasas_set_raidflag_cpu_affinity(9)
• megasas_build_ldio_fusion(9)
• megasas_build_ld_nonrw_fusion(9)
• megasas_build_syspd_fusion(9)
• megasas_build_io_fusion(9)
• megasas_build_and_issue_cmd_fusion(9)
• megasas_complete_r1_command(9)
• access_irq_context(9)
• release_irq_context(9)
• complete_cmd_fusion(9)
• megasas_enable_irq_poll(9)
• megasas_sync_irqs(9)
• megasas_irqpoll(9)
• megasas_complete_cmd_dpc_fusion(9)
• megasas_isr_fusion(9)
• build_mpt_mfi_pass_thru(9)
• build_mpt_cmd(9)
• megasas_issue_dcmd_fusion(9)
• megasas_release_fusion(9)
• megasas_read_fw_status_reg_fusion(9)
• megasas_alloc_host_crash_buffer(9)
• megasas_free_host_crash_buffer(9)
• megasas_adp_reset_fusion(9)
• megasas_check_reset_fusion(9)
• megasas_trigger_snap_dump(9)
• megasas_tm_response_code(9)
• megasas_issue_tm(9)

like… that's the entire megaraid fusion cinematic universe and megasas_fire_cmd_fusion is just one star in it ✨ obsessed.

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okay that's the page bestie!! 💖 this little love letter to the kernel lives in ./drivers/scsi/megaraid, and it's dated October 2026 — so mark your calendars, she's got a future ahead of her 🗓️✨ mwah, go fire some commands, periodt 🎀💅