STRUCT SMU_REGISTERS(9)

✨ struct smu_registers — these are the SMU registers ✨

okay so bestie, welcome to struct smu_registers(9) from the Kernel API Manual 🫶 this one's a struct in ./drivers/scsi/isci/registers.h and it's literally the SMU registers. that's the whole vibe. it's giving "hold my register map" 💅

🌸 SYNOPSIS 🌸

here's the whole struct, verbatim, don't touch a single character or she WILL notice:

struct smu_registers {
    u32 post_context_port;
    u32 address_modifier;
    u32 reserved_08;
    u32 reserved_0C;
    u32 interrupt_status;
    u32 interrupt_mask;
    u32 interrupt_coalesce_control;
    u32 reserved_1C;
    u32 host_task_table_lower;
    u32 host_task_table_upper;
    u32 task_context_range;
    u32 reserved_2C;
    u32 completion_queue_lower;
    u32 completion_queue_upper;
    u32 reserved_38;
    u32 reserved_3C;
    u32 completion_queue_put;
    u32 completion_queue_get;
    u32 completion_queue_control;
    u32 reserved_4C;
    u32 reserved_5x[4];
    u32 reserved_6x[4];
    u32 reserved_7x[4];
    u32 remote_node_context_lower;
    u32 remote_node_context_upper;
    u32 reserved_88;
    u32 reserved_8C;
    u32 device_context_capacity;
    u32 device_function_capacity;
    u32 control_status;
    u32 soft_reset_control;
    u32 mmr_address_window;
    u32 mmr_data_window;
    u32 clock_gating_control;
    u32 clock_gating_performance;
    u32 reserved_Bx[4];
    u32 reserved_Cx[4];
    u32 reserved_Dx[4];
    u32 reserved_Ex[4];
    u32 reserved_Fx[4];
    u32 reserved_1xx[64];
    u32 reserved_2xx[64];
    u32 reserved_3xx[64];
    u32 task_context_assignment[256];
};

like, look at her. so many reserved_* fields — she's an icon who knows how to leave room for the future 👑 and yes, task_context_assignment[256] is the main character at the end, we love a grand finale 💖

🎀 Members 🎀

so... the original page has a "Members" section and ngl, it's completely empty. no members listed, no commentary, nothing. she said "the struct speaks for itself" and honestly? respect. 💀

fr fr there is literally nothing under this heading in the source page, so don't come for me — I'm not gonna invent members that aren't there 🙈

🦋 SEE ALSO 🦋

the whole friend group 💜 — Kernel file ./drivers/scsi/isci/registers.h, and then:

• struct scu_viit_entry(9)
• struct scu_iit_entry(9)
• struct scu_sdma_registers(9)
• struct scu_transport_layer_registers(9)
• struct scu_link_layer_registers(9)
• struct scu_sgpio_registers(9)
• struct scu_port_task_scheduler_registers(9)
• struct scu_port_task_scheduler_group_registers(9)
• struct scu_afe_registers(9)
• struct transport_link_layer_pair(9)
• struct scu_peg_registers(9)
• struct scu_registers(9)

go read them, they're all slay, iykyk 🌈

and that's the page!! sign-off time: this one lives at ./drivers/scsi/isci, dated October 2026, and the title you're gonna see at the top is struct smu_registers(9). no cap, that's the whole thing. mwah 💋✨🍓