qcom_write_data_dma(9)

✨ NAME ✨

okay so welcome to qcom_write_data_dma(9) from the Kernel API Manual, bestie — we are officially in kernel-docs territory now. 💅

qcom_write_data_dma — transfer data. That's the name, that's the vibe, and the NAME section is not gonna elaborate further. Periodt. 🎀

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🦋 SYNOPSIS 🦋

she is declared exactly like this, character for character:

int qcom_write_data_dma (struct qcom_nand_controller *nandc , int
reg_off , const u8 *vaddr , int size , unsigned int flags );

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💅 ARGUMENTS 💅

• nandc — qpic nand controller. The controller bestie in question. 🫶
• reg_off — offset within the controller's data buffer. Yes, exactly that offset. ✨
• vaddr — virtual address of the buffer we want to read from. Pointer tea. 🦋
• size — DMA transaction size in bytes. Numbers, but make it DMA. 🔥
• flags — flags to control DMA descriptor preparation. The little switches that steer the prep. 🎀

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🦋 DESCRIPTION 🦋

okay so the DESCRIPTION is giving cliffhanger energy, and I need you to see it:

This function will prepares a DMA descriptor to transfer data from

That is literally where it ends — from and then nothing. Not me staring at the manpage waiting for the rest of the sentence 😭. It prepares a DMA descriptor to transfer data from … yeah, the original does not finish that thought. We are not inventing the missing part, bestie. No cap. 💀

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🌈 SEE ALSO 🌈

Kernel file: ./drivers/mtd/nand/qpic_common.c — that's the file tea. 🍓

And here's the whole related-call squad, every single one:

• qcom_free_bam_transaction(9)
• qcom_alloc_bam_transaction(9)
• qcom_clear_bam_transaction(9)
• qcom_qpic_bam_dma_done(9)
• qcom_nandc_dev_to_mem(9)
• qcom_prepare_bam_async_desc(9)
• qcom_prep_bam_dma_desc_cmd(9)
• qcom_prep_bam_dma_desc_data(9)
• qcom_prep_adm_dma_desc(9)
• qcom_read_reg_dma(9)
• qcom_write_reg_dma(9)
• qcom_read_data_dma(9)
• qcom_submit_descs(9)
• qcom_clear_read_regs(9)
• qcom_nandc_unalloc(9)
• qcom_nandc_alloc(9)

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mwah 💋 source/version: ./drivers/mtd/nand, date: October 2026. That's the footer tea, bestie — qcom_write_data_dma(9) out. 🎀