drm/i915: Use the vma resource as argument for gtt binding / unbinding

When introducing asynchronous unbinding, the vma itself may no longer
be alive when the actual binding or unbinding takes place.

Update the gtt i915_vma_ops accordingly to take a struct i915_vma_resource
instead of a struct i915_vma for the bind_vma() and unbind_vma() ops.
Similarly change the insert_entries() op for struct i915_address_space.

Replace a couple of i915_vma_snapshot members with their newly introduced
i915_vma_resource counterparts, since they have the same lifetime.

Also make sure to avoid changing the struct i915_vma_flags (in particular
the bind flags) async. That should now only be done sync under the
vm mutex.

v2:
- Update the vma_res::bound_flags when binding to the aliased ggtt
v6:
- Remove I915_VMA_ALLOC_BIT (Matthew Auld)
- Change some members of struct i915_vma_resource from unsigned long to u64
  (Matthew Auld)
v7:
- Fix vma resource size parameters to be u64 rather than unsigned long
  (Matthew Auld)

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220110172219.107131-3-thomas.hellstrom@linux.intel.com

1 files changed, 16 insertions, 21 deletions

diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index 11f0aa65f8a3..26f997c376a2 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -370,9 +370,9 @@ static int igt_check_page_sizes(struct i915_vma *vma)
 		err = -EINVAL;
 	}
 
-	if (!HAS_PAGE_SIZES(i915, vma->page_sizes.gtt)) {
+	if (!HAS_PAGE_SIZES(i915, vma->resource->page_sizes_gtt)) {
 		pr_err("unsupported page_sizes.gtt=%u, supported=%u\n",
-		       vma->page_sizes.gtt & ~supported, supported);
+		       vma->resource->page_sizes_gtt & ~supported, supported);
 		err = -EINVAL;
 	}
 
@@ -403,15 +403,9 @@ static int igt_check_page_sizes(struct i915_vma *vma)
 	if (i915_gem_object_is_lmem(obj) &&
 	    IS_ALIGNED(vma->node.start, SZ_2M) &&
 	    vma->page_sizes.sg & SZ_2M &&
-	    vma->page_sizes.gtt < SZ_2M) {
+	    vma->resource->page_sizes_gtt < SZ_2M) {
 		pr_err("gtt pages mismatch for LMEM, expected 2M GTT pages, sg(%u), gtt(%u)\n",
-		       vma->page_sizes.sg, vma->page_sizes.gtt);
-		err = -EINVAL;
-	}
-
-	if (obj->mm.page_sizes.gtt) {
-		pr_err("obj->page_sizes.gtt(%u) should never be set\n",
-		       obj->mm.page_sizes.gtt);
+		       vma->page_sizes.sg, vma->resource->page_sizes_gtt);
 		err = -EINVAL;
 	}
 
@@ -547,9 +541,9 @@ static int igt_mock_memory_region_huge_pages(void *arg)
 				goto out_unpin;
 			}
 
-			if (vma->page_sizes.gtt != page_size) {
+			if (vma->resource->page_sizes_gtt != page_size) {
 				pr_err("%s page_sizes.gtt=%u, expected=%u\n",
-				       __func__, vma->page_sizes.gtt,
+				       __func__, vma->resource->page_sizes_gtt,
 				       page_size);
 				err = -EINVAL;
 				goto out_unpin;
@@ -630,9 +624,9 @@ static int igt_mock_ppgtt_misaligned_dma(void *arg)
 
 		err = igt_check_page_sizes(vma);
 
-		if (vma->page_sizes.gtt != page_size) {
+		if (vma->resource->page_sizes_gtt != page_size) {
 			pr_err("page_sizes.gtt=%u, expected %u\n",
-			       vma->page_sizes.gtt, page_size);
+			       vma->resource->page_sizes_gtt, page_size);
 			err = -EINVAL;
 		}
 
@@ -657,9 +651,10 @@ static int igt_mock_ppgtt_misaligned_dma(void *arg)
 
 			err = igt_check_page_sizes(vma);
 
-			if (vma->page_sizes.gtt != I915_GTT_PAGE_SIZE_4K) {
+			if (vma->resource->page_sizes_gtt != I915_GTT_PAGE_SIZE_4K) {
 				pr_err("page_sizes.gtt=%u, expected %llu\n",
-				       vma->page_sizes.gtt, I915_GTT_PAGE_SIZE_4K);
+				       vma->resource->page_sizes_gtt,
+				       I915_GTT_PAGE_SIZE_4K);
 				err = -EINVAL;
 			}
 
@@ -805,9 +800,9 @@ static int igt_mock_ppgtt_huge_fill(void *arg)
 			}
 		}
 
-		if (vma->page_sizes.gtt != expected_gtt) {
+		if (vma->resource->page_sizes_gtt != expected_gtt) {
 			pr_err("gtt=%u, expected=%u, size=%zd, single=%s\n",
-			       vma->page_sizes.gtt, expected_gtt,
+			       vma->resource->page_sizes_gtt, expected_gtt,
 			       obj->base.size, yesno(!!single));
 			err = -EINVAL;
 			break;
@@ -961,10 +956,10 @@ static int igt_mock_ppgtt_64K(void *arg)
 				}
 			}
 
-			if (vma->page_sizes.gtt != expected_gtt) {
+			if (vma->resource->page_sizes_gtt != expected_gtt) {
 				pr_err("gtt=%u, expected=%u, i=%d, single=%s\n",
-				       vma->page_sizes.gtt, expected_gtt, i,
-				       yesno(!!single));
+				       vma->resource->page_sizes_gtt,
+				       expected_gtt, i, yesno(!!single));
 				err = -EINVAL;
 				goto out_vma_unpin;
 			}