xe_gt_mcr_unicast_read_any(9)

💅 xe_gt_mcr_unicast_read_any(9) 💅

okay so bestie, welcome to the Kernel API Manual — this lil page is literally all about xe_gt_mcr_unicast_read_any, and by the end you're gonna be obsessed with it. no cap. 🫶

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✨ NAME ✨

xe_gt_mcr_unicast_read_any — reads a non-terminated instance of an MCR register 👑

it's giving "i just wanna read one register bestie, pick a good one for me" energy. and honestly? iconic.

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🌸 SYNOPSIS 🌸

u32 xe_gt_mcr_unicast_read_any (struct xe_gt *gt , struct xe_reg_mcr
reg_mcr );

like, you hand it a gt and a reg_mcr, and it hands you back a u32. simple as that. slay. ✨

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🦋 ARGUMENTS 🦋

• gt — the GT structure. your graphics tile main character. it's the whole vibe check of a context you're passing in here 💜
• reg_mcr — the register to read. the specific one you're asking about, fr fr.

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🔥 DESCRIPTION 🔥

so here's the tea ☕: this function reads a GT MCR register. that's the whole assignment and it ate.

but the way it does it is the cute part — the read gets steered to a non-terminated instance. that means an instance that isn't fused off, and isn't powered down by power gating. so like, it goes out of its way to find you a living, breathing, non-terminated instance instead of hitting a dead one. considerate king behavior honestly 🎀

⚠️ important caveat bestie, do NOT skip this: this function assumes the caller is already holding any necessary forcewake domains. it's not gonna grab them for you. no hand-holding. you gotta come correct with your forcewake already held or it's gonna be a bad time 💀

and what does it return? it returns the value from a non-terminated instance of reg. that's it. that's the whole return. periodt. 🫶

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🌈 SEE ALSO 🌈

like all good things, this one has a whole friend group. go check out:

• the kernel file ./drivers/gpu/drm/xe/xe_gt_mcr.c 📁
• GT Multicast/Replicated (MCR) Register Support(9)
• xe_gt_mcr_get_dss_steering(9)
• xe_gt_mcr_init_early(9)
• xe_gt_mcr_init(9)
• xe_gt_mcr_set_implicit_defaults(9)
• xe_gt_mcr_unicast_read(9)
• xe_gt_mcr_unicast_write(9)
• xe_gt_mcr_multicast_write(9)

ngl that's a stacked lineup. iykyk 💅

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and that's the page bestie!! 🧚 no notes, you understood it perfectly, i'm so proud of you 💖

mwah 💋 — this lil masterclass came to you from ./drivers/gpu/drm/xe, dated October 2026, and it's officially titled xe_gt_mcr_unicast_read_any(9) so you can cite it in your group chat with confidence 🎀✨