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authorJoerg Roedel <jroedel@suse.de>2017-04-12 08:21:28 +0300
committerJoerg Roedel <jroedel@suse.de>2017-04-20 17:33:58 +0300
commite73b7afe4e8ca5ec4304a9e1d5009755a85fff91 (patch)
treee5f67ea8f0826768d1bdc3f9aee71a20a89f0129 /drivers/iommu/omap-iommu.h
parent49a57ef7f8492ef985ee1ecdb927ca78a6b2f308 (diff)
downloadlinux-e73b7afe4e8ca5ec4304a9e1d5009755a85fff91.tar.xz
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>
Diffstat (limited to 'drivers/iommu/omap-iommu.h')
-rw-r--r--drivers/iommu/omap-iommu.h33
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;