bam_prep_slave_sg(9)

🌸 bam_prep_slave_sg 🌸

okay bestie, welcome to the bam_prep_slave_sg(9) Kernel API Manual page 💖 this one is short, iconic, and here to prep a slave sg transaction. no cap, let's get into it ✨

🎀 NAME 🎀

bam_prep_slave_sg — Prep slave sg transaction 💅

🦋 SYNOPSIS 🦋

struct dma_async_tx_descriptor * bam_prep_slave_sg (struct dma_chan
       *chan , struct scatterlist *sgl , unsigned int sg_len , enum
       dma_transfer_direction direction , unsigned long flags , void *context
       );

🧚 ARGUMENTS 🧚

the whole cast, in order, periodt:

• chan — dma channel 👑
• sgl — scatter gather list 🌈
• sg_len — length of sg 📏
• direction — DMA transfer direction 🧭
• flags — DMA flags 🚩
• context — transfer context (unused) 🙈 yes bestie, it literally says unused

💜 SEE ALSO 💜

kernel file: ./drivers/dma/qcom/bam_dma.c — go read it, iykyk 🫶

and the whole friend group is: bam_addr(9), bam_reset(9), bam_reset_channel(9), bam_chan_init_hw(9), bam_alloc_chan(9), bam_free_chan(9), bam_slave_config(9), bam_dma_terminate_all(9), bam_pause(9), bam_resume(9), process_channel_irqs(9), bam_dma_irq(9), bam_tx_status(9), bam_apply_new_config(9), bam_start_dma(9), dma_tasklet(9), bam_issue_pending(9), bam_dma_free_desc(9), bam_init(9) ⭐

xoxo 💋 source/version: ./drivers/dma/qcom · date: October 2026 · page: bam_prep_slave_sg(9) — bye bestie! 🫶💖