STRUCT SMU_MSG_ARGS(9)

✨ struct smu_msg_args(9) — Kernel API Manual ✨

okay so bestie, welcome to the struct smu_msg_args(9) page from the Kernel API Manual — it’s literally all about per-call message arguments, and we’re gonna get into it 💅💖

🎀 NAME 🎀

struct smu_msg_args — per-call message arguments, periodt ✨

✨ SYNOPSIS ✨

       struct smu_msg_args {
           enum smu_message_type msg;
           u32 args[SMU_MSG_MAX_ARGS];
           int num_args;
           u32 out_args[SMU_MSG_MAX_ARGS];
           int num_out_args;
           u32 flags;
           u32 timeout;
        };

🌸 Members 🌸

• msg — the common message type, typed as enum smu_message_type 👑
• args — input arguments, the whole little stack of them 🫶
• num_args — number of input arguments, no cap ✨
• out_args — output arguments, and these cuties get filled after a successful send 💖
• num_out_args — number of output arguments to read, literally that count bestie 🌈
• flags — message flags, using SMU_MSG_FLAG_* 💅
• timeout — per-message timeout in us, and 0 = use default — yes, microseconds, not vibes 🎀

💜 SEE ALSO 💜

Kernel file ./drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h — go read these too, bestie:

• struct smu_msg_config(9)
• struct smu_msg_ops(9)
• struct smu_msg_ctl(9)
• struct smu_temp_funcs(9)
• struct pptable_funcs(9)
• smu_memcpy_trailing(9)

mwah 💋 this page’s footer energy is source/version ./drivers/gpu/drm/amd/pm/swsmu..., dated October 2026, and the bottom line is still struct smu_msg_args(9) — iconic, bye 🎀✨