STRUCT DMUB_SRV_REGION_PARAMS(9)

🌸 struct dmub_srv_region_params(9) 🌸

okay so bestie, welcome to the Kernel API Manual — yes that Kernel API Manual, the one with all the DRM/AMD display lore — and today's main character is struct dmub_srv_region_params. it's giving "little struct, big job" energy ngl 💅

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✨ NAME ✨

struct dmub_srv_region_params — the params used for calculating dmub regions 🎀

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🦋 SYNOPSIS 🦋

okay so here's the whole vibe, laid out exactly:

struct dmub_srv_region_params {
    uint32_t inst_const_size;
    uint32_t bss_data_size;
    uint32_t vbios_size;
    const uint8_t *fw_inst_const;
    const uint8_t *fw_bss_data;
    const enum dmub_window_memory_type *window_memory_type;
    const struct dmub_fw_meta_info *fw_info;
 };

like, that's the struct. that's her. she's iconic and she's holding a lot of uint32_ts and const pointers 🫶

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💖 Members 💖

so the manual only spills the tea on four of these fields — the rest are just sitting there looking pretty, iykyk 🙈 but here's what we do know:

• inst_const_size — the size of the fw inst const section, literally that's it, that's the whole vibe ✨
• bss_data_size — the size of the fw bss data section, same energy, different section 💫
• vbios_size — the size of the vbios data 🔥
• fw_bss_data — the raw firmware bss data section, no cap, it's a const uint8_t * and it's just raw bytes out here living its truth 🎀

lowkey note bestie: the synopsis shows the full struct, but only these four members get a write-up here. the others are real, they're just not documented on this page, so don't come for me 💀

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🌈 SEE ALSO 🌈

okay this list is long long, but every single one of them ate, so here we go, no skipping, we're being thorough bestie 💜

• Kernel file ./drivers/gpu/drm/amd/display/dmub/dmub_srv.h DMUB interface and operation(9)
• struct dmub_region(9)
• struct dmub_window(9)
• struct dmub_fb(9)
• struct dmub_srv_fw_meta_info_params(9)
• struct dmub_srv_region_info(9)
• struct dmub_srv_memory_params(9)
• struct dmub_srv_fb_info(9)
• struct dmub_soc_fb_info(9)
• struct dmub_diagnostic_data(9)
• struct dmub_preos_info(9)
• struct dmub_srv_base_funcs(9)
• struct dmub_srv_hw_funcs(9)
• struct dmub_srv_create_params(9)
• struct dmub_srv(9)
• struct dmub_notification(9)
• dmub_srv_create(9)
• dmub_srv_destroy(9)
• dmub_srv_calc_region_info(9)
• dmub_srv_has_hw_support(9)
• dmub_srv_is_hw_init(9)
• dmub_srv_hw_init(9)
• dmub_srv_hw_reset(9)
• dmub_srv_fb_cmd_queue(9)
• dmub_srv_fb_cmd_execute(9)
• dmub_srv_wait_for_hw_pwr_up(9)
• dmub_srv_wait_for_auto_load(9)
• dmub_srv_wait_for_phy_init(9)
• dmub_srv_wait_for_pending(9)
• dmub_srv_wait_for_idle(9)
• dmub_srv_send_gpint_command(9)
• dmub_srv_get_gpint_response(9)
• dmub_srv_get_gpint_dataout(9)
• dmub_srv_flush_buffer_mem(9)
• dmub_srv_get_fw_boot_status(9)
• dmub_srv_send_inbox0_cmd(9)
• dmub_srv_wait_for_inbox0_ack(9)
• dmub_srv_subvp_save_surf_addr(9)
• dmub_srv_set_power_state(9)
• dmub_srv_reg_cmd_execute(9)
• dmub_srv_cmd_get_response(9)
• dmub_srv_sync_inboxes(9)
• dmub_srv_wait_for_inbox_free(9)
• dmub_srv_update_inbox_status(9)
• dmub_srv_get_preos_info(9)
• dmub_srv_get_fw_meta_info_from_raw_fw(9)

like… forty-something cross-references?? she's connected, she knows everybody, main character energy fr fr 👑

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and that's the page bestie!! this one came from ./drivers/gpu/drm/amd/display/... and it's dated October 2026, printed up all nice as struct dmub_srv_region_params(9) — go forth and calculate those regions, you've got this 💖✨🎀