drm/nouveau/platform: allow to specify the IOMMU bit

[deliverable/linux.git] / drivers / gpu / drm / nouveau / include / nvkm / core / tegra.h

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/tegra.h b/drivers/gpu/drm/nouveau/include/nvkm/core/tegra.h
index 5aa2480da25f577d7a8d5c1e04b6ffdc2171ff3b..16641cec18a28dbb1a5af0dd344313eea56b7646 100644 (file)
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/tegra.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/tegra.h
@@ -4,6 +4,7 @@
 #include <core/mm.h>
 
 struct nvkm_device_tegra {
+       const struct nvkm_device_tegra_func *func;
        struct nvkm_device device;
        struct platform_device *pdev;
        int irq;
@@ -28,7 +29,17 @@ struct nvkm_device_tegra {
        int gpu_speedo;
 };
 
-int nvkm_device_tegra_new(struct platform_device *,
+struct nvkm_device_tegra_func {
+       /*
+        * If an IOMMU is used, indicates which address bit will trigger a
+        * IOMMU translation when set (when this bit is not set, IOMMU is
+        * bypassed). A value of 0 means an IOMMU is never used.
+        */
+       u8 iommu_bit;
+};
+
+int nvkm_device_tegra_new(const struct nvkm_device_tegra_func *,
+                         struct platform_device *,
                          const char *cfg, const char *dbg,
                          bool detect, bool mmio, u64 subdev_mask,
                          struct nvkm_device **);