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drm/tegra: move tegra iommu domain support under CONFIG_TEGRA_IOMMU_SMMU

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Tegra iommu domain is used in legacy chips (<= T210).
Move the related codes under CONFIG_TEGRA_IOMMU_SMMU accordingly.

Jira HOSTX-5833

Change-Id: I1e1e1dab33935b8881b905574ee006bbe8fc61d9
Signed-off-by: Santosh BS <santoshb@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3293445
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Santosh BS
2025-01-30 06:41:20 +00:00
committed by Jon Hunter
parent 2318f8689a
commit ebe01a47a3
1 changed files with 12 additions and 0 deletions
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12
drivers/gpu/drm/tegra/drm.c
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@@ -1157,6 +1157,7 @@ fput:
}
EXPORT_SYMBOL_GPL(tegra_drm_get_syncpt);
#ifdef CONFIG_TEGRA_IOMMU_SMMU
static bool host1x_drm_wants_iommu(struct host1x_device *dev)
{
struct host1x *host1x = dev_get_drvdata(dev->dev.parent);
@@ -1202,11 +1203,14 @@ static bool host1x_drm_wants_iommu(struct host1x_device *dev)
return domain != NULL;
}
#endif
static int host1x_drm_probe(struct host1x_device *dev)
{
#ifdef CONFIG_TEGRA_IOMMU_SMMU
#if defined(NV_IOMMU_PAGING_DOMAIN_ALLOC_PRESENT) /* Linux v6.11 */
struct device *dma_dev = dev->dev.parent;
#endif
#endif
struct tegra_drm *tegra;
struct drm_device *drm;
@@ -1222,6 +1226,7 @@ static int host1x_drm_probe(struct host1x_device *dev)
goto put;
}
#ifdef CONFIG_TEGRA_IOMMU_SMMU
#if defined(NV_IOMMU_PAGING_DOMAIN_ALLOC_PRESENT) /* Linux v6.11 */
if (host1x_drm_wants_iommu(dev) && device_iommu_mapped(dma_dev)) {
tegra->domain = iommu_paging_domain_alloc(dma_dev);
@@ -1238,6 +1243,7 @@ static int host1x_drm_probe(struct host1x_device *dev)
if (err < 0)
goto domain;
}
#endif
mutex_init(&tegra->clients_lock);
INIT_LIST_HEAD(&tegra->clients);
@@ -1272,6 +1278,7 @@ static int host1x_drm_probe(struct host1x_device *dev)
tegra->hmask = drm->mode_config.max_width - 1;
tegra->vmask = drm->mode_config.max_height - 1;
#ifdef CONFIG_TEGRA_IOMMU_SMMU
if (tegra->use_explicit_iommu) {
u64 carveout_start, carveout_end, gem_start, gem_end;
u64 dma_mask = dma_get_mask(&dev->dev);
@@ -1305,6 +1312,7 @@ static int host1x_drm_probe(struct host1x_device *dev)
tegra->domain = NULL;
iova_cache_put();
}
#endif
#ifdef CONFIG_DRM_TEGRA_HAVE_DISPLAY
if (tegra->hub) {
@@ -1360,21 +1368,25 @@ hub:
tegra_display_hub_cleanup(tegra->hub);
device:
#endif
#ifdef CONFIG_TEGRA_IOMMU_SMMU
if (tegra->domain) {
mutex_destroy(&tegra->mm_lock);
drm_mm_takedown(&tegra->mm);
put_iova_domain(&tegra->carveout.domain);
iova_cache_put();
}
#endif
host1x_device_exit(dev);
poll:
drm_kms_helper_poll_fini(drm);
drm_mode_config_cleanup(drm);
#ifdef CONFIG_TEGRA_IOMMU_SMMU
domain:
if (tegra->domain)
iommu_domain_free(tegra->domain);
free:
#endif
kfree(tegra);
put:
drm_dev_put(drm);