vmw_fifo_mem_read(9)

✨ NAME ✨

okay so bestie, this is vmw_fifo_mem_read(9) from the Kernel API Manual, and the name is literally vmw_fifo_mem_read — Perform a MMIO read from the fifo memory 💅 no cap, that's the whole assignment. iconic.

🌸 SYNOPSIS 🌸

the vibe check is one function call — not me being obsessed with a single line, but here we are 🎀:

u32 vmw_fifo_mem_read (struct vmw_private *vmw , uint32 fifo_reg );

🎀 ARGUMENTS 🎀

• vmw — The device private structure. she's the context, the main character energy for this device 🫶 literally the private struct, periodt.
• fifo_reg — The fifo register to read from. the exact fifo register you're reading from, iykyk ✨ no cap.

🦋 DESCRIPTION 🦋

This function is intended to be equivalent to ioread32 on memremap'd memory, but without byteswapping. fr fr, that's the whole plot: same energy as ioread32 on memremap'd memory, except no byteswapping. it's giving “I read the register, but make it no-swap” 💖 periodt.

💜 RETURN 💜

the value read — that's what comes back to you, bestie. slay, no mystery, no extra lore 🌈

🔥 SEE ALSO 🔥

if you're in your research era, go peek at these cuties ngl:

• Kernel file ./drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
• struct vmw_resource(9)
• struct vmw_surface_metadata(9)
• struct vmw_surface(9)
• struct vmw_res_cache_entry(9)
• enum vmw_dma_map_mode(9)
• struct vmw_sg_table(9)
• struct vmw_piter(9)
• struct vmw_sw_context(9)
• enum vmw_sm_type(9)
• has_sm4_context(9)
• has_sm4_1_context(9)
• has_sm5_context(9)
• has_gl43_context(9)
• vmw_resource_mob_attached(9)
• vmw_fifo_caps(9)
• vmw_is_cursor_bypass3_enabled(9)
• vmw_piter_next(9)
• vmw_piter_dma_addr(9)
• vmw_piter_page(9)
• struct vmw_diff_cpy(9)
• VMW_DEBUG_USER(9)
• VMW_DEBUG_KMS(9)
• vmw_fifo_mem_write(9)

mwah 💋 source/version: ./drivers/gpu/drm/vmwgfx; date: October 2026 — byeee 🫶