DALSMC_MSG_G...eaderVersion(9)

✨ DALSMC_MSG_GetMsgHeaderVersion ✨

okay so this is a page from the Kernel API Manual (section 9, the kernel-API girlies 🎀) and honestly? it's a little one but it's important, so let's get into it 💅

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💖 NAME 💖

DALSMC_MSG_GetMsgHeaderVersion — literally just queries the DALSMC header version that's running on PMFW 🦋 no cap, that's the whole vibe.

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🌸 SYNOPSIS 🌸

DALSMC_MSG_GetMsgHeaderVersion

that's it. that's the whole synopsis. no arguments, no flags, she's lowkey self-sufficient 👑

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🧚 DESCRIPTION 🧚

so here's the tea ☕ — DAL uses the version that comes back from this call to figure out which messages are actually supported in environments that need backwards compatibility. like, she's doing a vibe check on the PMFW to see what it can handle, and adjusting accordingly. main character energy fr fr 💖

here's the request/response breakdown, keep up bestie:

Request: (none) — she takes nothing, she needs nothing, icon behaviour 🙈

Response: Reg0 — the DALSMC_VERSION value that's compiled into PMFW ⭐

so yeah, you send nothing, you get back the compiled-in version in Reg0, and DAL uses it to know what's what. periodt. 💅

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/amd/display/dc/clk_mgr/dcn60/dalsmc.h — go read the header bestie, it's right there 🫶
• DALSMC_MSG_TestMessage(9)
• DALSMC_MSG_TransferTableSmu2Dram(9)
• DALSMC_MSG_SetHardMinByFreq(9)
• DALSMC_MSG_SetMinDeepSleepDcfclk(9)
• DALSMC_MSG_BacoAudioD3PME(9)
• DALSMC_MSG_ReturnHardMinStatus(9)
• DALSMC_MSG_IndicatePstateStatus(9)
• DALSMC_MSG_UpdateUTMQoSRequest(9)
• DALSMC_MSG_SetDisplayIdleOptimizations(9)
• DALSMC_MSG_SetStutterEfficiency(9)
• TABLE_SOC_UTM(9)
• TABLE_DAL_INIT(9)

like, the whole DALSMC friend group is here, she's not alone in this 😭💜

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and that's the page!! mwah 💋 this cutie came from ./drivers/gpu/drm/amd/display/... and she's dated October 2026 — same name up top and down at the bottom, DALSMC_MSG_GetMsgHeaderVersion(9), we love a consistent queen 👑✨