afu_dma_pin_pages(9)

💖 afu_dma_pin_pages(9) 💖

okay bestie, welcome to the Kernel API Manual page for afu_dma_pin_pages(9) — yes, it’s giving kernel-core, and we’re gonna get through it together. 🫶✨

🌸 NAME 🌸

afu_dma_pin_pages — pin pages of given dma memory region

✨ SYNOPSIS ✨

int afu_dma_pin_pages (struct dfl_feature_dev_data *fdata , struct dfl_afu_dma_region *region );

🎀 ARGUMENTS 🎀

• fdata — feature dev data
• region — dma memory region to be pinned

💅 DESCRIPTION 💅

okay so what this one does: pin all the pages of the given dfl_afu_dma_region. That’s the whole assignment, no cap. 💖

It returns 0 for success or a negative error code. So like, zero is the slay outcome; negative means something went sideways. 😭

🔥 SEE ALSO 🔥

Kernel file: ./drivers/fpga/dfl-afu-dma-region.c

also pls go look at these besties:

• afu_dma_unpin_pages(9)
• afu_dma_check_continuous_pages(9)
• dma_region_check_iova(9)
• afu_dma_region_add(9)
• afu_dma_region_remove(9)
• afu_dma_region_destroy(9)
• afu_dma_region_find(9)
• afu_dma_region_find_iova(9)
• afu_dma_map_region(9)
• afu_dma_unmap_region(9)

and that’s the whole vibe check, bestie — signed off by ./drivers/fpga, October 2026 edition. 🫶✨