megasas_get_seq_num(9)

🎀 NAME 🎀

bestie, meet megasas_get_seq_num from the Kernel API Manual — the function whose whole job is literally: Gets latest event sequence numbers ✨💅.

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✨ SYNOPSIS ✨

here’s the signature, copied exactly because code is sacred 🫶:

int megasas_get_seq_num (struct megasas_instance *instance , struct
       megasas_evt_log_info *eli );

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💖 ARGUMENTS 💖

okay so there are two inputs, and yes they both matter:

• instance — Adapter soft state 🌀
• eli — FW event log sequence numbers information 📓✨

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🦋 DESCRIPTION 🦋

okay so picture this: FW keeps a log of all events in a non-volatile area. The upper layers usually wanna find out the latest sequence number of the events, the seq number at the boot, etc. They “read” all the events below the latest seq number by issuing a direct fw cmd (DCMD) — that’s the move. 🫶

For future events (beyond latest seq number), they would subscribe to AEN (asynchronous event notification) and wait for the events to happen. That’s literally the whole flow, and it’s giving “watch this space” energy 👀✨.

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🌈 SEE ALSO 🌈

Kernel file: ./drivers/scsi/megaraid/megaraid_sas_base.c 🫶

the whole megaraid_sas friend group, in order, no cap: megasas_set_dma_settings(9), megasas_get_cmd(9), megasas_return_cmd(9), megasas_decode_evt(9), megasas_enable_intr_xscale(9), megasas_disable_intr_xscale(9), megasas_read_fw_status_reg_xscale(9), megasas_clear_intr_xscale(9), megasas_fire_cmd_xscale(9), megasas_adp_reset_xscale(9), megasas_check_reset_xscale(9), megasas_enable_intr_ppc(9), megasas_disable_intr_ppc(9), megasas_read_fw_status_reg_ppc(9), megasas_clear_intr_ppc(9), megasas_fire_cmd_ppc(9), megasas_check_reset_ppc(9), megasas_enable_intr_skinny(9), megasas_disable_intr_skinny(9), megasas_read_fw_status_reg_skinny(9), megasas_clear_intr_skinny(9), megasas_fire_cmd_skinny(9), megasas_check_reset_skinny(9), megasas_enable_intr_gen2(9), megasas_disable_intr_gen2(9), megasas_read_fw_status_reg_gen2(9), megasas_clear_intr_gen2(9), megasas_fire_cmd_gen2(9), megasas_adp_reset_gen2(9), megasas_check_reset_gen2(9), megasas_issue_polled(9), megasas_issue_blocked_cmd(9), megasas_issue_blocked_abort_cmd(9), megasas_make_sgl32(9), megasas_make_sgl64(9), megasas_make_sgl_skinny(9), megasas_build_dcdb(9), megasas_build_ldio(9), megasas_cmd_type(9), megasas_queue_command(9), megasas_complete_cmd_dpc(9), megasas_start_timer(9), megasas_wait_for_outstanding(9), megasas_generic_reset(9), megasas_reset_timer(9), megasas_dump(9), megasas_dump_reg_set(9), megasas_dump_fusion_io(9), megasas_reset_bus_host(9), megasas_task_abort(9), megasas_reset_target(9), megasas_bios_param(9), megasas_service_aen(9), megasas_complete_int_cmd(9), megasas_complete_abort(9), megasas_complete_cmd(9), megasas_issue_pending_cmds_again(9), megasas_deplete_reply_queue(9), megasas_isr(9), megasas_transition_to_ready(9), megasas_teardown_frame_pool(9), megasas_create_frame_pool(9), megasas_free_cmds(9), megasas_alloc_cmds(9), megasas_ld_list_query(9), megasas_host_device_list_query(9), megasas_get_ctrl_info(9), megasas_issue_init_mfi(9), megasas_setup_irqs_msix(9), megasas_setup_jbod_map(9), megasas_get_device_list(9), megasas_set_high_iops_queue_affinity_and_hint(9), megasas_alloc_irq_vectors(9), megasas_init_fw(9), megasas_release_mfi(9), megasas_register_aen(9), megasas_start_aen(9), megasas_io_attach(9), megasas_set_dma_mask(9), megasas_alloc_ctrl_mem(9), megasas_alloc_ctrl_dma_buffers(9), megasas_probe_one(9), megasas_flush_cache(9), megasas_shutdown_controller(9), megasas_suspend(9), megasas_resume(9), megasas_detach_one(9), megasas_shutdown(9), megasas_mgmt_fw_ioctl(9), megasas_mgmt_ioctl(9), megasas_update_device_list(9), megasas_add_remove_devices(9), megasas_init(9), megasas_exit(9) 💅🔥

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signed with love from the Kernel API Manual, source ./drivers/scsi/megaraid, dated October 2026 🎀💖🫶