sba_map_sg(9)

💖 NAME 💖

<pink>sba_map_sg</pink> — map Scatter/Gather list ✨

okay so bestie, this is the <hotpink>sba_map_sg(9)</hotpink> page from the Kernel API Manual, and the vibe check is simple: we are <purple>mapping a Scatter/Gather list</purple>. no cap, that's the whole NAME, and honestly? iconic. periodt 💅

✨ SYNOPSIS ✨

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

🎀 ARGUMENTS 🎀

• dev — the <mint>instance of PCI</mint> owned by the driver that's asking. like, who's requesting the map? this one right here 🫶
• sglist — <yellow>array of buffer/length pairs</yellow>. the actual scatter/gather lineup, fr fr 💫
• nents — <cyan>number of entries in list</cyan>. count 'em, bestie 🔢
• direction — <peach>R/W or both</peach>. read, write, or both — that's the direction tea ☕
• attrs — <lavender>attributes</lavender>. the attributes slot, keeping it cute ✨

🦋 DESCRIPTION 🦋

See Documentation/core-api/dma-api-howto.rst 📖

that's literally it — i'm obsessed with how short this is. the description is just pointing you at Documentation/core-api/dma-api-howto.rst, so go read that for the full story — iykyk 💖

🌈 SEE ALSO 🌈

Kernel file ./drivers/parisc/sba_iommu.c — plus the whole friend group:

• sba_dump_ranges(9)
• sba_dump_tlb(9)
• sba_dump_pdir_entry(9)
• sba_check_pdir(9)
• sba_dump_sg(9)
• sba_search_bitmap(9)
• sba_alloc_range(9)
• sba_free_range(9)
• sba_io_pdir_entry(9)
• sba_mark_invalid(9)
• sba_dma_supported(9)
• sba_map_single(9)
• sba_unmap_phys(9)
• sba_alloc(9)
• sba_free(9)
• sba_unmap_sg(9)
• sba_get_iommu(9)
• sba_directed_lmmio(9)
• sba_distributed_lmmio(9)

okay that's the whole page, bestie 🫶 <rainbow>sba_map_sg(9)</rainbow> · source/version: ./drivers/parisc · date: October 2026 · go map those Scatter/Gather lists and slay 💅✨