drm/i915: setup io-mapping for LMEM (cb6d2467) · Commits · 戴 / test

Create an io-mapping to describe the CPU aperture for lmem. Signed-off-by:

Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Reviewed-by:

drivers/gpu/drm/i915/intel_region_lmem.c

+26 −2

Original line number	Diff line number	Diff line
		@@ -9,8 +9,32 @@
		#include "gem/i915_gem_region.h"
		#include "intel_region_lmem.h"

		static void
		region_lmem_release(struct intel_memory_region *mem)
		{
		io_mapping_fini(&mem->iomap);
		intel_memory_region_release_buddy(mem);
		}

		static int
		region_lmem_init(struct intel_memory_region *mem)
		{
		int ret;

		if (!io_mapping_init_wc(&mem->iomap,
		mem->io_start,
		resource_size(&mem->region)))
		return -EIO;

		ret = intel_memory_region_init_buddy(mem);
		if (ret)
		io_mapping_fini(&mem->iomap);

		return ret;
		}

		const struct intel_memory_region_ops intel_region_lmem_ops = {
		.init = intel_memory_region_init_buddy,
		.release = intel_memory_region_release_buddy,
		.init = region_lmem_init,
		.release = region_lmem_release,
		.create_object = __i915_gem_lmem_object_create,
		};