r100_cs_packet_parse_vline(9)

🎀 NAME 🎀

r100_cs_packet_parse_vline — okay so this is the one that parses userspace VLINE packets 💅

(welcome to the Kernel API Manual, bestie — this page is literally about r100_cs_packet_parse_vline and nothing else, periodt)

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✨ SYNOPSIS ✨

int r100_cs_packet_parse_vline (struct radeon_cs_parser *p );

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🧚 ARGUMENTS 🧚

• p — the parser structure that's holding the parsing context. yeah. she's the main character, she's carrying the whole context of this parse. 🫶

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💖 DESCRIPTION 💖

Okay so picture this: userspace is out here sending a special sequence for VLINE waits. iconic behavior, we love a signature move ✨

The whole thing looks like this, exactly:

PACKET0 - VLINE_START_END + value PACKET0 - WAIT_UNTIL +_value RELOC (P3) - crtc_id in reloc.

(not me transcribing that character for character because we do NOT fumble the details 💀)

So what does this function actually do with it? Two things, and they both slay:

• it parses all that, and relocates the VLINE START END and the WAIT UNTIL packets to the correct crtc 👑
• it also detects a switched off crtc — and in that case it nulls out the wait. like, no crtc, no wait, we're not doing that today bestie 🌸

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🦋 SEE ALSO 🦋

Kernel file ./drivers/gpu/drm/radeon/r100.c is the whole vibe, and these are its neighbors — go say hi 💜

• r100_wait_for_vblank(9)
• r100_page_flip(9)
• r100_page_flip_pending(9)
• r100_pm_get_dynpm_state(9)
• r100_pm_init_profile(9)
• r100_pm_misc(9)
• r100_pm_prepare(9)
• r100_pm_finish(9)
• r100_gui_idle(9)
• r100_hpd_sense(9)
• r100_hpd_set_polarity(9)
• r100_hpd_init(9)
• r100_hpd_fini(9)
• r100_ring_hdp_flush(9)

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ok that's the whole page, no cap 🧚 iykyk

later bestie 💕 — this was ./drivers/gpu/drm/radeon, dated October 2026, aka r100_cs_packet_parse_vline(9) 🎀✨🔥