1 files changed, 35 insertions, 1 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index bbaeabd04b0d..941c0de6151a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -349,6 +349,7 @@ unsigned long devm_get_free_pages(struct device *dev,
 				  gfp_t gfp_mask, unsigned int order);
 void devm_free_pages(struct device *dev, unsigned long addr);
 
+#ifdef CONFIG_HAS_IOMEM
 void __iomem *devm_ioremap_resource(struct device *dev,
 				    const struct resource *res);
 void __iomem *devm_ioremap_resource_wc(struct device *dev,
@@ -357,6 +358,31 @@ void __iomem *devm_ioremap_resource_wc(struct device *dev,
 void __iomem *devm_of_iomap(struct device *dev,
 			    struct device_node *node, int index,
 			    resource_size_t *size);
+#else
+
+static inline
+void __iomem *devm_ioremap_resource(struct device *dev,
+				    const struct resource *res)
+{
+	return ERR_PTR(-EINVAL);
+}
+
+static inline
+void __iomem *devm_ioremap_resource_wc(struct device *dev,
+				       const struct resource *res)
+{
+	return ERR_PTR(-EINVAL);
+}
+
+static inline
+void __iomem *devm_of_iomap(struct device *dev,
+			    struct device_node *node, int index,
+			    resource_size_t *size)
+{
+	return ERR_PTR(-EINVAL);
+}
+
+#endif
 
 /* allows to add/remove a custom action to devres stack */
 void devm_remove_action(struct device *dev, void (*action)(void *), void *data);
@@ -625,7 +651,10 @@ struct device_physical_location {
  * @dma_pools:	Dma pools (if dma'ble device).
  * @dma_mem:	Internal for coherent mem override.
  * @cma_area:	Contiguous memory area for dma allocations
- * @dma_io_tlb_mem: Pointer to the swiotlb pool used.  Not for driver use.
+ * @dma_io_tlb_mem: Software IO TLB allocator.  Not for driver use.
+ * @dma_io_tlb_pools:	List of transient swiotlb memory pools.
+ * @dma_io_tlb_lock:	Protects changes to the list of active pools.
+ * @dma_uses_io_tlb: %true if device has used the software IO TLB.
  * @archdata:	For arch-specific additions.
  * @of_node:	Associated device tree node.
  * @fwnode:	Associated device node supplied by platform firmware.
@@ -732,6 +761,11 @@ struct device {
 #ifdef CONFIG_SWIOTLB
 	struct io_tlb_mem *dma_io_tlb_mem;
 #endif
+#ifdef CONFIG_SWIOTLB_DYNAMIC
+	struct list_head dma_io_tlb_pools;
+	spinlock_t dma_io_tlb_lock;
+	bool dma_uses_io_tlb;
+#endif
 	/* arch specific additions */
 	struct dev_archdata	archdata;