ccio_map_sg(9)

🦋 ccio_map_sg(9) 🦋

okay bestie, welcome to the Kernel API Manual page for ccio_map_sg(9) — manual name folded in right here at the top like a little name tag, periodt 💅✨

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🌸 NAME 🌸

ccio_map_sg — Map the scatter/gather list into the IOMMU. That’s the name and the one-liner, iconic behavior only 🎀

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🌈 SYNOPSIS 🌈

int ccio_map_sg (struct device *dev , struct scatterlist *sglist , int
nents , enum dma_data_direction direction , unsigned long attrs );

look at that signature — it’s giving full parameter-list main character energy, no cap 💖

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🎀 ARGUMENTS 🎀

• dev — The PCI device, aka the main character here 👑
• sglist — The scatter/gather list to be mapped in the IOMMU, fr fr 🦋
• nents — The number of entries in the scatter/gather list ✨
• direction — The direction of the DMA transaction (to/from device) 🔥
• attrs — attributes. That’s literally all it says, bestie 🙈

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💖 DESCRIPTION 💖

This function implements the pci_map_sg function. That’s the whole description — short, iconic, and lowkey doing its job 💅

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🔥 SEE ALSO 🔥

Kernel file ./drivers/parisc/ccio-dma.c is the home base — and the whole squad is linked here:

• ccio_alloc_range(9)
• ccio_free_range(9)
• ccio_io_pdir_entry(9)
• ccio_clear_io_tlb(9)
• ccio_mark_invalid(9)
• ccio_dma_supported(9)
• ccio_map_single(9)
• ccio_unmap_phys(9)
• ccio_alloc(9)
• ccio_free(9)
• ccio_unmap_sg(9)
• ccio_find_ioc(9)
• ccio_get_iommu(9)
• ccio_ioc_init(9)
• ccio_probe(9)
• ccio_init(9)

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signing off from ./drivers/parisc, October 2026, on the ccio_map_sg(9) page — stay slay, bye bestie 🫶💖🌟