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drm/i915/selftest: test aligned offsets for 64K

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When using softpin it's not enough to just pad the vma size, we also
need to ensure the vma offset is at the start of the pt boundary, if we
plan to utilize 64K pages. Therefore to improve test coverage we should
use both aligned and unaligned gtt offsets in igt_write_huge.

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20181029203734.21936-1-matthew.auld@intel.com
This commit is contained in:
Matthew Auld 2018-10-29 20:37:34 +00:00 committed by Chris Wilson
parent e5ee4956f2
commit 79c03caac2
1 changed files with 18 additions and 4 deletions
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22
drivers/gpu/drm/i915/selftests/huge_pages.c
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@ -1135,7 +1135,8 @@ static int igt_write_huge(struct i915_gem_context *ctx,
n = 0;
for_each_engine(engine, i915, id) {
if (!intel_engine_can_store_dword(engine)) {
pr_info("store-dword-imm not supported on engine=%u\n", id);
pr_info("store-dword-imm not supported on engine=%u\n",
id);
continue;
}
engines[n++] = engine;
@ -1167,17 +1168,30 @@ static int igt_write_huge(struct i915_gem_context *ctx,
engine = engines[order[i] % n];
i = (i + 1) % (n * I915_NUM_ENGINES);
err = __igt_write_huge(ctx, engine, obj, size, offset_low, dword, num + 1);
/*
* In order to utilize 64K pages we need to both pad the vma
* size and ensure the vma offset is at the start of the pt
* boundary, however to improve coverage we opt for testing both
* aligned and unaligned offsets.
*/
if (obj->mm.page_sizes.sg & I915_GTT_PAGE_SIZE_64K)
offset_low = round_down(offset_low,
I915_GTT_PAGE_SIZE_2M);
err = __igt_write_huge(ctx, engine, obj, size, offset_low,
dword, num + 1);
if (err)
break;
err = __igt_write_huge(ctx, engine, obj, size, offset_high, dword, num + 1);
err = __igt_write_huge(ctx, engine, obj, size, offset_high,
dword, num + 1);
if (err)
break;
if (igt_timeout(end_time,
"%s timed out on engine=%u, offset_low=%llx offset_high=%llx, max_page_size=%x\n",
__func__, engine->id, offset_low, offset_high, max_page_size))
__func__, engine->id, offset_low, offset_high,
max_page_size))
break;
}