| Message ID | 20240902014700.66095-4-baolu.lu@linux.intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drm: Use iommu_paging_domain_alloc() | expand |
On Mon, Sep 02, 2024 at 09:47:00AM GMT, Lu Baolu wrote: > Commit <17de3f5fdd35> ("iommu: Retire bus ops") removes iommu ops from > the bus structure. The iommu subsystem no longer relies on bus for > operations. So iommu_domain_alloc() interface is no longer relevant. > > Replace iommu_domain_alloc() with iommu_paging_domain_alloc() which takes > the physical device from which the host1x_device virtual device was > instantiated. This physical device is a common parent to all physical > devices that are part of the virtual device. > > Suggested-by: Thierry Reding <thierry.reding@gmail.com> > Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> > --- > drivers/gpu/drm/tegra/drm.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) Acked-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 03d1c76aec2d..d79c76a287f2 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -1135,6 +1135,7 @@ static bool host1x_drm_wants_iommu(struct host1x_device *dev) static int host1x_drm_probe(struct host1x_device *dev) { + struct device *dma_dev = dev->dev.parent; struct tegra_drm *tegra; struct drm_device *drm; int err; @@ -1149,8 +1150,8 @@ static int host1x_drm_probe(struct host1x_device *dev) goto put; } - if (host1x_drm_wants_iommu(dev) && iommu_present(&platform_bus_type)) { - tegra->domain = iommu_domain_alloc(&platform_bus_type); + if (host1x_drm_wants_iommu(dev) && device_iommu_mapped(dma_dev)) { + tegra->domain = iommu_paging_domain_alloc(dma_dev); if (!tegra->domain) { err = -ENOMEM; goto free;
Commit <17de3f5fdd35> ("iommu: Retire bus ops") removes iommu ops from the bus structure. The iommu subsystem no longer relies on bus for operations. So iommu_domain_alloc() interface is no longer relevant. Replace iommu_domain_alloc() with iommu_paging_domain_alloc() which takes the physical device from which the host1x_device virtual device was instantiated. This physical device is a common parent to all physical devices that are part of the virtual device. Suggested-by: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> --- drivers/gpu/drm/tegra/drm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)