STRUCT DMA_CHAN_DEV(9)

🎀 struct dma_chan_dev(9) 🎀

okay bestie, welcome to the Kernel API Manual entry for struct dma_chan_dev ✨ its whole thing is literally to relate sysfs device node to backing channel device 💅 no cap.

🌸 NAME 🌸

struct dma_chan_dev — relate sysfs device node to backing channel device 🫶

⭐ SYNOPSIS ⭐

       struct dma_chan_dev {
           struct dma_chan *chan;
           struct device device;
           int dev_id;
           bool chan_dma_dev;
        };

🫶 Members 🫶

• chan — driver channel device 👑
• device — sysfs device ✨
• dev_id — parent dma_device dev_id 🔥
• chan_dma_dev — The channel is using custom/different dma-mapping compared to the parent dma_device 💅

👀 SEE ALSO 👀

Kernel file ./include/linux/dmaengine.h — go peek, iykyk 🦋

• dma_cookie_t(9)
• enum dma_status(9)
• enum dma_transaction_type(9)
• enum dma_transfer_direction(9)
• struct data_chunk(9)
• struct dma_interleaved_template(9)
• struct dma_vec(9)
• enum dma_ctrl_flags(9)
• enum sum_check_bits(9)
• enum sum_check_flags(9)
• enum dma_desc_metadata_mode(9)
• struct dma_chan_percpu(9)
• struct dma_router(9)
• struct dma_chan(9)
• enum dma_slave_buswidth(9)
• struct dma_slave_config(9)
• enum dma_residue_granularity(9)
• struct dma_slave_caps(9)
• dma_filter_fn(9)
• struct dma_async_tx_descriptor(9)
• struct dma_tx_state(9)
• enum dmaengine_alignment(9)
• struct dma_slave_map(9)
• struct dma_filter(9)
• struct dma_device(9)
• dmaengine_prep_peripheral_dma_vec(9)
• dmaengine_prep_config_sg_safe(9)
• dmaengine_prep_config_single_safe(9)
• dmaengine_prep_dma_memset(9)
• dmaengine_terminate_all(9)
• dmaengine_terminate_async(9)
• dmaengine_synchronize(9)
• dmaengine_terminate_sync(9)
• dma_async_issue_pending(9)
• dma_async_is_tx_complete(9)
• dma_async_is_complete(9)

okay that’s the whole page bestie 🫶 source/version: ./include/linux, date: October 2026, page: struct dma_chan_dev(9) — mwah 💋