amdgpu_debug..._config_read(9)

okay so bestie, welcome to the amdgpu_debug..._config_read(9) page — this is the Kernel API Manual, and today’s main character is amdgpu_debugfs_gca_config_read. yes, it’s a mouthful. iykyk. 💅✨

✨ NAME ✨

amdgpu_debugfs_gca_config_read — read from gfx config data. that’s the whole vibe: it reads gfx config data. periodt. 💖

🦋 SYNOPSIS 🦋

ssize_t amdgpu_debugfs_gca_config_read (struct file *f , char __user
*buf , size_t size , loff_t *pos );

🎀 ARGUMENTS 🎀

• f — open file handle. like, the file handle that’s already open, bestie. 🫶
• buf — user buffer to store read data in. this is where the data goes, no cap. 💾
• size — number of bytes to read. literally how many bytes you’re asking for. 🔢
• pos — offset to seek to. the little position pointer that says where you’re at. 📍

🌸 DESCRIPTION 🌸

so this file is used to access configuration data in a somewhat stable fashion — not like chaotic unstable fashion, okay? the format is a series of DWORDs with the first one indicating which revision it is. 👑

new content gets appended to the end so that older software can still read the data. it’s giving backwards compatibility main character energy, fr fr. 💅🌈

💜 SEE ALSO 💜

• Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
• amdgpu_debugfs_process_reg_op(9)
• amdgpu_debugfs_regs_pcie_read(9)
• amdgpu_debugfs_regs_pcie_write(9)
• amdgpu_debugfs_regs_pcie64_read(9)
• amdgpu_debugfs_regs_pcie64_write(9)
• amdgpu_debugfs_regs_didt_read(9)
• amdgpu_debugfs_regs_didt_write(9)
• amdgpu_debugfs_regs_smc_read(9)
• amdgpu_debugfs_regs_smc_write(9)
• amdgpu_debugfs_sensor_read(9)
• amdgpu_debugfs_gfxoff_residency_read(9)
• amdgpu_debugfs_gfxoff_residency_write(9)
• amdgpu_debugfs_gfxoff_count_read(9)
• amdgpu_debugfs_gfxoff_write(9)
• amdgpu_debugfs_gfxoff_read(9)
• amdgpu_debugfs_regs_init(9)

source cutie: ./drivers/gpu/drm/amd/amdgpu — dated October 2026 — and this whole manual moment is amdgpu_debug..._config_read(9). bye bestie, slay your config reads! 🫶💖✨🎀