diff options
| author | Chris Wilson <[email protected]> | 2017-09-14 17:22:40 +0100 |
|---|---|---|
| committer | Chris Wilson <[email protected]> | 2017-09-18 16:57:35 +0100 |
| commit | b5891fb520f742ce48b097c6b8a0b2db1e2bb979 (patch) | |
| tree | 113f9868bcc6331ed79daf12a168e317f2ef7183 | |
| parent | 1298d51c44fddcb609ea6c9fa37b76028593963b (diff) | |
drm/i915/selftests: Disable iommu for the mock device
On some machines, the iommu cannot allocate a domain for the mock device
causing the dma_map_sg() to fail, and the selftest to fail with -ENOMEM.
For the mock selftests, we are using a fake device and do not care about
iommu; so convince intel_iommu to treat us as a dummy device with an
identity mapping (and no iommu domain).
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101080
Signed-off-by: Chris Wilson <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Tested-by: Elizabeth De La Torre Mena <[email protected]>
Reviewed-by: Matthew Auld <[email protected]
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/mock_gem_device.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c index 678723430d78..38ed006be5be 100644 --- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c +++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c @@ -146,6 +146,9 @@ struct drm_i915_private *mock_gem_device(void) dev_set_name(&pdev->dev, "mock"); dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + /* hack to disable iommu for the fake device; force identity mapping */ + pdev->dev.archdata.iommu = (void *)-1; + dev_pm_domain_set(&pdev->dev, &pm_domain); pm_runtime_enable(&pdev->dev); pm_runtime_dont_use_autosuspend(&pdev->dev); |