Commit c538d54e authored by Zbigniew Kempczyński's avatar Zbigniew Kempczyński Committed by Daniel Vetter
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drm/i915: Distinction of memory regions 



In preparation for Xe HP multi-tile architecture with multiple memory
regions, we need to be able differentiate multiple instances of device
local-memory.

Note that the region name is just to give it a human friendly
identifier, instead of using class/instance which also uniquely
identifies the region. So far the region name is only for our own
internal debugging in the kernel(like in the selftests), or debugfs
which prints the list of regions, including the regions name.

v2: add commentary for our current region name use

Signed-off-by: default avatarZbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Signed-off-by: default avatarMatthew Auld <matthew.auld@intel.com>
Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20210203171231.551338-1-matthew.auld@intel.com


Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent c9a995e5

drivers/gpu/drm/i915/gt/intel_gt.c

+2 −0
Original line number Diff line number Diff line
@@ -68,6 +68,8 @@ int intel_gt_probe_lmem(struct intel_gt *gt) 
	mem->type = INTEL_MEMORY_LOCAL;

	mem->instance = 0;



	intel_memory_region_set_name(mem, "local%u", mem->instance);



	GEM_BUG_ON(!HAS_REGION(i915, id));

	GEM_BUG_ON(i915->mm.regions[id]);

	i915->mm.regions[id] = mem;

drivers/gpu/drm/i915/gt/intel_region_lmem.c

+0 −2
Original line number Diff line number Diff line
@@ -90,8 +90,6 @@ region_lmem_init(struct intel_memory_region *mem) 
	if (ret)

		io_mapping_fini(&mem->iomap);



	intel_memory_region_set_name(mem, "local");



	return ret;

}