STRUCT TXX9DMAC_SLAVE(9)

✨ struct txx9dmac_slave(9) ✨

okay bestie so this is a page from the Kernel API Manual (that's the manual name, iykyk) and it's literally all about struct txx9dmac_slave — the controller-specific info about a slave 💅 don't worry, we're gonna get through it together, it's not even scary.

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🌸 NAME 🌸

struct txx9dmac_slave — the controller-specific information about a slave 🎀

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🦋 SYNOPSIS 🦋

here's the whole struct, copied exactly, no cap:

struct txx9dmac_slave {
    u64 tx_reg;
    u64 rx_reg;
    unsigned int    reg_width;
 };

like… three whole members. that's it. that's the struct. main character energy honestly 👑

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💖 Members 💖

• tx_reg — the physical address of the data register that gets used for memory-to-peripheral transfers ✨ so like, when data's flowing out, this is where it lives.
• rx_reg — the physical address of the data register used for peripheral-to-memory transfers 🌈 that's the incoming direction, bestie, know the difference, it matters.
• reg_width — the peripheral register width 🫶 (an unsigned int, in case you were wondering)

fr fr these are physical addresses, not virtual ones — don't go dereferencing them like a pointer thinking you're clever 😭

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🎀 SEE ALSO 🎀

go check these out, they're the friends of this page, the group chat if you will 🧚:

• Kernel file ./arch/mips/include/asm/txx9/dmac.h
• struct txx9dmac_platform_data(9)
• struct txx9dmac_chan_platform_data(9)

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that's the whole page, periodt 💅 you ate that. this was the October 2026 edition of the docs, living in the kernel file ./arch/mips/include/asm/txx9 — mwah, love that for us 🍓💜