WaitForDoorbellReply(9)

💖 NAME 💖

Okay so this is the Kernel API Manual page for WaitForDoorbellReply(9), and it's literally about waiting for and capturing an IOC handshake reply. Bestie, it's giving “poll the adapter until the handshake shows up.” 💅

✨ SYNOPSIS ✨

int WaitForDoorbellReply (MPT_ADAPTER *ioc , int howlong , int sleepFlag
);

🫶 ARGUMENTS 🫶

• ioc — pointer to MPT_ADAPTER structure. This is the adapter bestie in question.
• howlong — how long to wait (in seconds). Clock it: literally seconds.
• sleepFlag — specifies whether the process can sleep. Like, is napping allowed or not? 🦋

🌸 DESCRIPTION 🌸

Okay so here’s the tea: this routine polls the IOC for a handshake reply, 16 bits at a time. The reply is cached to the IOC private area, which is large enough to hold a maximum of 128 bytes of reply data. No cap, 128 bytes is the max cache capacity. 🎀

It returns a negative value on failure; otherwise it returns the size of the reply in WORDS. Yes, WORDS with all-caps energy — that’s the unit, periodt. 😭

🦋 SEE ALSO 🦋

Kernel file ./drivers/message/fusion/mptbase.c — and then literally the whole friend group: 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_alloc_fw_memory(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), 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).

Byeee bestie 🫶 — this page’s source/version is ./drivers/message/fusion, it’s dated October 2026, and the whole thing is literally WaitForDoorbellReply(9). Periodt. 💖