diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/drm.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.c | 57 |
1 files changed, 32 insertions, 25 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 4b70ce664c41..0c5f1e6a0446 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -92,10 +92,6 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags) return -ENOMEM; if (iommu_present(&platform_bus_type)) { - u64 carveout_start, carveout_end, gem_start, gem_end; - struct iommu_domain_geometry *geometry; - unsigned long order; - tegra->domain = iommu_domain_alloc(&platform_bus_type); if (!tegra->domain) { err = -ENOMEM; @@ -105,27 +101,6 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags) err = iova_cache_get(); if (err < 0) goto domain; - - geometry = &tegra->domain->geometry; - gem_start = geometry->aperture_start; - gem_end = geometry->aperture_end - CARVEOUT_SZ; - carveout_start = gem_end + 1; - carveout_end = geometry->aperture_end; - - order = __ffs(tegra->domain->pgsize_bitmap); - init_iova_domain(&tegra->carveout.domain, 1UL << order, - carveout_start >> order); - - tegra->carveout.shift = iova_shift(&tegra->carveout.domain); - tegra->carveout.limit = carveout_end >> tegra->carveout.shift; - - drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1); - mutex_init(&tegra->mm_lock); - - DRM_DEBUG("IOMMU apertures:\n"); - DRM_DEBUG(" GEM: %#llx-%#llx\n", gem_start, gem_end); - DRM_DEBUG(" Carveout: %#llx-%#llx\n", carveout_start, - carveout_end); } mutex_init(&tegra->clients_lock); @@ -159,6 +134,36 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags) if (err < 0) goto fbdev; + if (tegra->domain) { + u64 carveout_start, carveout_end, gem_start, gem_end; + u64 dma_mask = dma_get_mask(&device->dev); + dma_addr_t start, end; + unsigned long order; + + start = tegra->domain->geometry.aperture_start & dma_mask; + end = tegra->domain->geometry.aperture_end & dma_mask; + + gem_start = start; + gem_end = end - CARVEOUT_SZ; + carveout_start = gem_end + 1; + carveout_end = end; + + order = __ffs(tegra->domain->pgsize_bitmap); + init_iova_domain(&tegra->carveout.domain, 1UL << order, + carveout_start >> order); + + tegra->carveout.shift = iova_shift(&tegra->carveout.domain); + tegra->carveout.limit = carveout_end >> tegra->carveout.shift; + + drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1); + mutex_init(&tegra->mm_lock); + + DRM_DEBUG("IOMMU apertures:\n"); + DRM_DEBUG(" GEM: %#llx-%#llx\n", gem_start, gem_end); + DRM_DEBUG(" Carveout: %#llx-%#llx\n", carveout_start, + carveout_end); + } + if (tegra->hub) { err = tegra_display_hub_prepare(tegra->hub); if (err < 0) @@ -1041,6 +1046,7 @@ int tegra_drm_register_client(struct tegra_drm *tegra, { mutex_lock(&tegra->clients_lock); list_add_tail(&client->list, &tegra->clients); + client->drm = tegra; mutex_unlock(&tegra->clients_lock); return 0; @@ -1051,6 +1057,7 @@ int tegra_drm_unregister_client(struct tegra_drm *tegra, { mutex_lock(&tegra->clients_lock); list_del_init(&client->list); + client->drm = NULL; mutex_unlock(&tegra->clients_lock); return 0; |