+#define gk20a_instmem(p) container_of((p), struct gk20a_instmem, base)
+
+static enum nvkm_memory_target
+gk20a_instobj_target(struct nvkm_memory *memory)
+{
+ return NVKM_MEM_TARGET_HOST;
+}
+
+static u64
+gk20a_instobj_addr(struct nvkm_memory *memory)
+{
+ return gk20a_instobj(memory)->mem.offset;
+}
+
+static u64
+gk20a_instobj_size(struct nvkm_memory *memory)
+{
+ return (u64)gk20a_instobj(memory)->mem.size << 12;
+}
+
+static void __iomem *
+gk20a_instobj_cpu_map_dma(struct nvkm_memory *memory)
+{
+#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
+ struct gk20a_instobj_dma *node = gk20a_instobj_dma(memory);
+ struct device *dev = node->base.imem->base.subdev.device->dev;
+ int npages = nvkm_memory_size(memory) >> 12;
+ struct page *pages[npages];
+ int i;
+
+ /* we shouldn't see a gk20a on anything but arm/arm64 anyways */
+ /* phys_to_page does not exist on all platforms... */
+ pages[0] = pfn_to_page(dma_to_phys(dev, node->handle) >> PAGE_SHIFT);
+ for (i = 1; i < npages; i++)
+ pages[i] = pages[0] + i;
+
+ return vmap(pages, npages, VM_MAP, pgprot_writecombine(PAGE_KERNEL));
+#else
+ BUG();
+ return NULL;
+#endif
+}
+
+static void __iomem *
+gk20a_instobj_cpu_map_iommu(struct nvkm_memory *memory)
+{
+ struct gk20a_instobj_iommu *node = gk20a_instobj_iommu(memory);
+ int npages = nvkm_memory_size(memory) >> 12;
+
+ return vmap(node->pages, npages, VM_MAP,
+ pgprot_writecombine(PAGE_KERNEL));
+}