UNION DMUB_FW_META(9)

💅 union dmub_fw_meta (9) — Kernel API Manual ✨

okay so bestie, welcome to the glow-up doc for union dmub_fw_meta — this is a kernel API manual page, and it's short but she is iconic. ngl this whole page is basically one flex: making sure the firmware metadata info struct stays exactly 64 bytes. no cap. 🎀

---

✨ NAME ✨

union dmub_fw_meta — ensures that dmub_fw_meta_info remains 64 bytes. that's it. that's the whole job. she keeps the size locked in 💅

---

🌸 SYNOPSIS 🌸

the whole vibe, verbatim:

union dmub_fw_meta {
    struct dmub_fw_meta_info info;
    uint8_t reserved[64];
 };

look at her. info is the actual payload, and reserved[64] is the padding bestie that makes sure the whole union comes out to a clean 64 bytes. the way that array just exists to hold the line 😭👑

---

🦋 Members 🦋

so like… the original page has this section heading and then nothing under it. no members listed, no descriptions, zero. a true main character moment: she showed up, said the heading, and left 💀

(i'm not gonna invent members for you, bestie — if the source page doesn't list 'em, we don't make 'em up. periodt.)

---

🫶 SEE ALSO 🫶

okay this is the long part and i am OBSESSED with how much cross-referencing is happening here. every single one, in order, no skips:

• Kernel file ./drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
• union dmub_addr(9)
• struct dmub_cursor_offload_pipe_data_dcn30_v1(9)
• struct dmub_cursor_offload_pipe_data_dcn401_v1(9)
• struct dmub_cursor_offload_pipe_data_dcn60_v1(9)
• struct dmub_cursor_offload_pipe_data_v1(9)
• struct dmub_cursor_offload_payload_data_v1(9)
• struct dmub_cursor_offload_stream_v1(9)
• struct dmub_cursor_offload_v1(9)
• union dmub_fw_meta_feature_bits(9)
• struct dmub_fw_meta_info(9)
• struct dmcub_trace_buf_entry(9)
• union dmub_fw_boot_status(9)
• enum dmub_fw_boot_status_bit(9)
• enum dmub_cursor_offload_comand_type(9)
• union dmub_fw_boot_options(9)
• enum dmub_shared_state_feature_id(9)
• struct dmub_shared_state_ips_fw(9)
• struct dmub_shared_state_ips_driver(9)
• struct dmub_shared_state_cursor_offload_v1(9)
• struct dmub_shared_state_feature_block(9)
• union dmub_gpint_data_register(9)
• enum dmub_out_cmd_type(9)
• struct dmub_cmd_header(9)
• struct dmub_rb_cmd_common(9)
• struct dmub_cmd_PLAT_54186_wa(9)
• struct dmub_rb_cmd_PLAT_54186_wa(9)
• enum dmub_cmd_mall_type(9)
• struct dmub_rb_cmd_mall(9)
• enum dmub_cmd_cab_type(9)
• struct dmub_rb_cmd_cab_for_ss(9)
• enum dmub_fams2_allow_delay_check_mode(9)
• enum dmub_cmd_idle_opt_type(9)
• struct dmub_rb_cmd_idle_opt_dcn_restore(9)
• struct dmub_dcn_notify_idle_cntl_data(9)
• struct dmub_rb_cmd_idle_opt_dcn_notify_idle(9)
• enum dmub_idle_opt_dc_power_state(9)
• struct dmub_idle_opt_set_dc_power_state_data(9)
• struct dmub_rb_cmd_idle_opt_set_dc_power_state(9)
• struct dmub_clocks(9)
• enum dmub_cmd_clk_mgr_type(9)
• struct dmub_rb_cmd_clk_mgr_notify_clocks(9)
• struct dmub_cmd_digx_encoder_control_data(9)
• struct dmub_rb_cmd_digx_encoder_control(9)
• struct dmub_cmd_set_pixel_clock_data(9)
• struct dmub_cmd_enable_disp_power_gating_data(9)
• struct dmub_rb_cmd_enable_disp_power_gating(9)
• struct dmub_dig_transmitter_control_data_v1_7(9)
• union dmub_cmd_dig1_transmitter_control_data(9)
• struct dmub_rb_cmd_dig1_transmitter_control(9)
• struct dmub_rb_cmd_domain_control_data(9)
• struct dmub_rb_cmd_domain_control(9)
• struct dmub_rb_cmd_dpphy_init(9)
• enum dp_aux_request_action(9)
• enum aux_return_code_type(9)
• enum aux_channel_type(9)
• struct aux_transaction_parameters(9)
• struct dmub_rb_cmd_hpd_sense_notify(9)
• enum dmub_phy_fsm_state(9)
• enum dmub_abm_ace_curve_type(9)
• enum dmub_abm_histogram_type(9)
• enum dmub_cmd_panel_cntl_type(9)
• struct dmub_cmd_panel_cntl_data(9)
• struct dmub_rb_cmd_panel_cntl(9)
• struct dmub_cmd_cable_id_input(9)
• struct dmub_cmd_cursor_offload_init_data(9)
• struct dmub_rb_cmd_cursor_offload_init(9)
• struct dmub_cmd_cursor_offload_stream_data(9)
• struct dmub_rb_cmd_cursor_offload_stream_cntl(9)
• union dmub_rb_cmd(9)
• union dmub_rb_out_cmd(9)
• struct dmub_rb_init_params(9)
• struct dmub_rb(9)

like, that's a whole friend group right there 🌈 and yes dmub_cursor_offload_comand_type(9) really is spelled like that in the source — not me, i promise 🙈

---

quick vibe check: this page lives at ./drivers/gpu/drm/amd/display/... in the kernel tree, so if you're digging around, that's where to look 🧚

---

💖 and that's the page, bestie! this one came from the kernel API manual, sourced from the ./drivers/gpu/drm/amd/display/... part of the tree, dated October 2026 — she's a little vintage, a little legendary, and she's exactly 64 bytes of attitude. slay 🍓👑