diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-01-20 14:01:31 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-01-20 14:01:31 -0300 |
commit | b4b7ff4b08e691656c9d77c758fc355833128ac0 (patch) | |
tree | 82fcb00e6b918026dc9f2d1f05ed8eee83874cc0 /drivers/gpu/drm/nouveau/nouveau_ttm.c | |
parent | 35acfa0fc609f2a2cd95cef4a6a9c3a5c38f1778 (diff) |
Linux-libre 4.4-gnupck-4.4-gnu
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_ttm.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_ttm.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c index 3f0fb55cb..d2e7d209f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_ttm.c +++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c @@ -29,6 +29,9 @@ #include "nouveau_gem.h" #include "drm_legacy.h" + +#include <core/tegra.h> + static int nouveau_vram_manager_init(struct ttm_mem_type_manager *man, unsigned long psize) { @@ -338,7 +341,7 @@ nouveau_ttm_init(struct nouveau_drm *drm) struct nvkm_device *device = nvxx_device(&drm->device); struct nvkm_pci *pci = device->pci; struct drm_device *dev = drm->dev; - u32 bits; + u8 bits; int ret; if (pci && pci->agp.bridge) { @@ -350,20 +353,31 @@ nouveau_ttm_init(struct nouveau_drm *drm) bits = nvxx_mmu(&drm->device)->dma_bits; if (nvxx_device(&drm->device)->func->pci) { - if (drm->agp.bridge || - !pci_dma_supported(dev->pdev, DMA_BIT_MASK(bits))) + if (drm->agp.bridge) bits = 32; + } else if (device->func->tegra) { + struct nvkm_device_tegra *tegra = device->func->tegra(device); - ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(bits)); - if (ret) - return ret; + /* + * If the platform can use a IOMMU, then the addressable DMA + * space is constrained by the IOMMU bit + */ + if (tegra->func->iommu_bit) + bits = min(bits, tegra->func->iommu_bit); + + } - ret = pci_set_consistent_dma_mask(dev->pdev, - DMA_BIT_MASK(bits)); - if (ret) - pci_set_consistent_dma_mask(dev->pdev, - DMA_BIT_MASK(32)); + ret = dma_set_mask(dev->dev, DMA_BIT_MASK(bits)); + if (ret && bits != 32) { + bits = 32; + ret = dma_set_mask(dev->dev, DMA_BIT_MASK(bits)); } + if (ret) + return ret; + + ret = dma_set_coherent_mask(dev->dev, DMA_BIT_MASK(bits)); + if (ret) + dma_set_coherent_mask(dev->dev, DMA_BIT_MASK(32)); ret = nouveau_ttm_global_init(drm); if (ret) |