linux/drivers/gpu/drm/xe/xe_mmio_gem.c, branch v6.19Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v6.192025-07-25T21:44:54Zdrm/xe: Support for mmap-ing mmio regions2025-07-25T21:44:54ZIlia Leviilia.levi@intel.com2025-07-14T12:26:58Zurn:sha1:1ffcf8b8ae8a786b61350ee082b6c82846a31e53
Allow the driver to expose hardware register spaces to userspace
through GEM objects with fake mmap offsets. This can be useful
for userspace-firmware communication, debugging, etc.
v2: Minor doc fix (CI)
v3: Enforce MAP_SHARED (Tejas)
Add fault handler with dummy page (Tejas, Matt Auld)
Store physical address instead of xe_mmio in the GEM object (MattB)
v4: Separate xe_mmio_gem from xe_mmio and make it private (MattB)
Signed-off-by: Ilia Levi <ilia.levi@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Link: https://lore.kernel.org/r/20250714122658.1803-1-ilia.levi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>