mpt_alloc_fw_memory(9)

💾 mpt_alloc_fw_memory(9) — allocate firmware memory 💾

okay so you're in the Kernel API Manual, section 9, and the function is mpt_alloc_fw_memory. it's giving "grab some firmware memory for the adapter" and honestly? kinda iconic. let's get into it 🎀

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✨ SYNOPSIS ✨

int mpt_alloc_fw_memory (MPT_ADAPTER *ioc , int size );

that's it, that's the whole vibe. two args, one int back. slay.

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🌸 ARGUMENTS 🌸

• ioc — Pointer to MPT_ADAPTER structure. this is your adapter bestie, the main character you're doing all this for 💅
• size — total FW bytes. how many bytes of firmware memory we're asking for, fr fr.

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🦋 DESCRIPTION 🦋

okay so here's the tea: if memory has already been allocated, you don't get a fresh new chunk — the same (cached) value is returned. lowkey efficient, no cap. ♻️

and the return? 0 if successful, or non-zero for failure. that's it. zero is the good ending, anything else means something went sideways 😭

ngl, a non-zero return here is your signal to go "hmm" and look at what else is going on. it's not a green checkmark, bestie.

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👑 SEE ALSO 👑

Kernel file ./drivers/message/fusion/mptbase.c — and here's the whole squad of related functions, in the exact order the page gives them:

mpt_get_cb_idx(9), mpt_is_discovery_complete(9), mpt_remove_dead_ioc_func(9),
mpt_fault_reset_work(9), mpt_interrupt(9), mptbase_reply(9), mpt_register(9),
mpt_deregister(9), mpt_event_register(9), mpt_event_deregister(9),
mpt_reset_register(9), mpt_reset_deregister(9),
mpt_device_driver_register(9), mpt_device_driver_deregister(9),
mpt_get_msg_frame(9), mpt_put_msg_frame(9), mpt_put_msg_frame_hi_pri(9),
mpt_free_msg_frame(9), mpt_add_sge(9), mpt_add_sge_64bit(9),
mpt_add_sge_64bit_1078(9), mpt_add_chain(9), mpt_add_chain_64bit(9),
mpt_send_handshake_request(9), mpt_host_page_access_control(9),
mpt_host_page_alloc(9), mpt_verify_adapter(9), mpt_get_product_name(9),
mpt_mapresources(9), mpt_attach(9), mpt_detach(9), mpt_suspend(9),
mpt_resume(9), mpt_do_ioc_recovery(9), mpt_detect_bound_ports(9),
mpt_adapter_disable(9), mpt_adapter_dispose(9),
MptDisplayIocCapabilities(9), MakeIocReady(9), mpt_GetIocState(9),
GetIocFacts(9), GetPortFacts(9), SendIocInit(9), SendPortEnable(9),
mpt_free_fw_memory(9), mpt_do_upload(9), mpt_downloadboot(9),
KickStart(9), mpt_diag_reset(9), SendIocReset(9), initChainBuffers(9),
PrimeIocFifos(9), mpt_handshake_req_reply_wait(9),
WaitForDoorbellAck(9), WaitForDoorbellInt(9), WaitForDoorbellReply(9),
GetLanConfigPages(9), mptbase_sas_persist_operation(9),
GetIoUnitPage2(9), mpt_GetScsiPortSettings(9),
mpt_readScsiDevicePageHeaders(9), mpt_inactive_raid_list_free(9),
mpt_inactive_raid_volumes(9), mpt_raid_phys_disk_pg0(9),
mpt_raid_phys_disk_get_num_paths(9), mpt_raid_phys_disk_pg1(9),
mpt_findImVolumes(9), SendEventNotification(9), SendEventAck(9),
mpt_config(9), mpt_ioc_reset(9), procmpt_create(9), procmpt_destroy(9),
mpt_print_ioc_summary(9), mpt_set_taskmgmt_in_progress_flag(9),
mpt_clear_taskmgmt_in_progress_flag(9), mpt_halt_firmware(9),
mpt_SoftResetHandler(9), mpt_Soft_Hard_ResetHandler(9),
mpt_HardResetHandler(9), ProcessEventNotification(9),
mpt_fc_log_info(9), mpt_spi_log_info(9), mpt_sas_log_info(9),
mpt_iocstatus_info_config(9), mpt_iocstatus_info(9), fusion_init(9),
fusion_exit(9)

that's a whole friend group, and yes, mpt_free_fw_memory(9) is right there in the list — the callback buddy for when you're done with all this 🫶

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and that's the page!! 🎀✨ source path is ./drivers/message/fusion, dated October 2026 — go forth and allocate responsibly, bestie 💖