mei_dma_copy_from(9)

okay so bestie, welcome to mei_dma_copy_from(9) from the Kernel API Manual — she’s lowkey iconic, highkey useful, and ngl the way she copies from a dma ring into a buffer is giving main character energy, fr fr 💖✨

🌸 NAME 🌸

mei_dma_copy_from - copy from dma ring into buffer 🦋 slay.

✨ SYNOPSIS ✨

here’s the signature, literally character-for-character, no cap:

size_t mei_dma_copy_from (struct mei_device *dev , unsigned char *buf , u32 offset , u32 n );

🎀 ARGUMENTS 🎀

vibe check each one, bestie:

• dev — the mei device 👑
• buf — data buffer 🎀
• offset — offset in slots. 📍
• n — number of slots to copy. 🔢

💫 RETURN 💫

number of bytes copied — that’s the whole return, periodt 💅

🔭 SEE ALSO 🔭

Kernel file ./drivers/misc/mei/dma-ring.c — go peek, iykyk 💜

• mei_dmam_dscr_alloc(9)
• mei_dmam_dscr_free(9)
• mei_dmam_ring_free(9)
• mei_dmam_ring_alloc(9)
• mei_dma_ring_is_allocated(9)
• mei_dma_ring_reset(9)
• mei_dma_copy_to(9)
• mei_dma_ring_read(9)
• mei_dma_ring_empty_slots(9)
• mei_dma_ring_write(9)

mwah 💋 this lil page’s source/version is ./drivers/misc/mei, dated October 2026 — catch u later, bestie! 🫶