radeon_cs_packet_parse(9)

💅 radeon_cs_packet_parse ✨

okay so this is a page from the Kernel API Manual bestie, and honestly it's a lil niche but we're gonna slay it anyway 🎀

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🦋 NAME 🦋

radeon_cs_packet_parse — literally parses a cp packet and points the ib index to the next packet 👑

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🌸 SYNOPSIS 🌸

int radeon_cs_packet_parse (struct radeon_cs_parser *p , struct
radeon_cs_packet *pkt , unsigned idx );

like yeah that's the whole vibe, three args, one int coming back, no cap 💜

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✨ ARGUMENTS ✨

• p — the parser structure that's holding all the parsing context 🫶 it's giving "main character holds the state" energy
• pkt — where the packet information gets stored, so this is your little ✨output slot✨
• idx — the packet index, periodt. that's it, that's the whole deal 🎀

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🔥 DESCRIPTION 🔥

so the whole premise here is that you assume chunk_ib_index is properly set already — like, do not come to this function with a messy chunk_ib_index, she will not fix it for you 🙈

then it'll return -EINVAL in two very specific situations:

• if the packet is bigger than the remaining ib size 😭
• or if the packet(s) is unknown 💀

and that's genuinely the whole description, like it's a short one but she ate 💅

ngl the function is doing a vibe check on your packet and gracefully returning -EINVAL instead of just vibing into undefined nonsense, which is honestly iconic of her 🧚

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/radeon/radeon_cs.c 📁
• radeon_cs_parser_fini(9) ⭐
• radeon_cs_packet_next_is_pkt3_nop(9) 🦋
• radeon_cs_dump_packet(9) 🍓
• radeon_cs_packet_next_reloc(9) 💖

like go read those next, iykyk 👑

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that's the whole page bestie!! brought to you by ./drivers/gpu/drm/radeon, dated October 2026 — mwah, ily, go parse some packets responsibly 🫶✨💜