iommu/omap: Move data structures to omap-iommu.h

The internal data-structures are scattered over various
header and C files. Consolidate them in omap-iommu.h.

While at this, add the kerneldoc comment for the missing
iommu domain variable and revise the iommu_arch_data name.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
[s-anna@ti.com: revise kerneldoc comments]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/iommu/omap-iommu.h b/drivers/iommu/omap-iommu.h
index 59628e5017b4..3c33608f48ca 100644
--- a/drivers/iommu/omap-iommu.h
+++ b/drivers/iommu/omap-iommu.h
@@ -14,6 +14,7 @@
 #define _OMAP_IOMMU_H
 
 #include <linux/bitops.h>
+#include <linux/iommu.h>
 
 #define for_each_iotlb_cr(obj, n, __i, cr)				\
 	for (__i = 0;							\
@@ -27,6 +28,23 @@ struct iotlb_entry {
 	u32 endian, elsz, mixed;
 };
 
+/**
+ * struct omap_iommu_domain - omap iommu domain
+ * @pgtable:	the page table
+ * @iommu_dev:	an omap iommu device attached to this domain. only a single
+ *		iommu device can be attached for now.
+ * @dev:	Device using this domain.
+ * @lock:	domain lock, should be taken when attaching/detaching
+ * @domain:	generic domain handle used by iommu core code
+ */
+struct omap_iommu_domain {
+	u32 *pgtable;
+	struct omap_iommu *iommu_dev;
+	struct device *dev;
+	spinlock_t lock;
+	struct iommu_domain domain;
+};
+
 struct omap_iommu {
 	const char	*name;
 	void __iomem	*regbase;
@@ -52,6 +70,21 @@ struct omap_iommu {
 	u32 id;
 };
 
+/**
+ * struct omap_iommu_arch_data - omap iommu private data
+ * @name: name of the iommu device
+ * @iommu_dev: handle of the iommu device
+ *
+ * This is an omap iommu private data object, which binds an iommu user
+ * to its iommu device. This object should be placed at the iommu user's
+ * dev_archdata so generic IOMMU API can be used without having to
+ * utilize omap-specific plumbing anymore.
+ */
+struct omap_iommu_arch_data {
+	const char *name;
+	struct omap_iommu *iommu_dev;
+};
+
 struct cr_regs {
 	u32 cam;
 	u32 ram;