STRUCT DMUB_SOC_FB_INFO(9)

🦋 struct dmub_soc_fb_info(9) — Kernel API Manual

okay so bestie, this is the kernel API manual page for struct dmub_soc_fb_info(9), and it is literally about the relevant addresses from the frame buffer. That’s the vibe. 💅

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🌸 NAME

struct dmub_soc_fb_info — relevant addresses from the frame buffer. No cap, that’s the whole name line. 💖

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✨ SYNOPSIS

here’s the struct definition, verbatim, indentation and all — I am not touching it, bestie:

       struct dmub_soc_fb_info {
           uint64_t fb_base;
           uint64_t fb_offset;
           uint32_t alt_channel_region_size[2];
           uint64_t alt_channel_region_base[2];
        };

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🎀 Members

okay so the page gives cute little one-liners for the first two members, and the other two are just sitting in the struct. I’m keeping all four visible because nothing gets ghosted on my watch. 👑

• fb_base — base of the framebuffer aperture. 💖
• fb_offset — offset of the framebuffer aperture. ✨
• alt_channel_region_size[2] — this one is in the struct too. The original page doesn’t give it a separate description, so I’m not inventing lore. Its type is uint32_t. 🫶
• alt_channel_region_base[2] — same energy: present in the struct, no extra one-liner in the original. Its type is uint64_t. 🦋

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💅 SEE ALSO

bestie, this list is long but iconic. Every single reference stays:

• 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_region_params(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_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)

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k bye bestie 💖 source/version is ./drivers/gpu/drm/amd/display/..., the date on deck is October 2026, and the page is struct dmub_soc_fb_info(9). periodt. 🎀✨