1 files changed, 91 insertions, 0 deletions
diff --git a/include/linux/sprd_iommu.h b/include/linux/sprd_iommu.h
new file mode 100644
index 00000000..884790f0
--- /dev/null
+++ b/include/linux/sprd_iommu.h
@@ -0,0 +1,91 @@
+#ifndef _SPRD_IOMMU_H
+#define _SPRD_IOMMU_H
+
+#include <linux/scatterlist.h>
+#include <linux/miscdevice.h>
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+#include <linux/earlysuspend.h>
+#endif
+
+struct sprd_iommu_init_data {
+	int id;                        /* iommu id */
+	char *name;                    /* iommu name */
+	
+	unsigned long iova_base;            /* io virtual address base */
+	size_t iova_size;            /* io virtual address size */
+	unsigned long pgt_base;             /* iommu page table base address */
+	size_t pgt_size;             /* iommu page table array size */
+	unsigned long ctrl_reg;             /* iommu control register */
+	unsigned long fault_page;
+	unsigned long re_route_page;
+	unsigned int iommu_rev;
+};
+
+struct sprd_iommu_dev {
+	struct miscdevice misc_dev;
+	struct sprd_iommu_init_data *init_data;
+	struct gen_pool *pool;
+	struct sprd_iommu_ops *ops;
+	unsigned long pgt;
+	struct mutex mutex_pgt;
+	struct clk* mmu_mclock;
+	struct clk* mmu_pclock;
+	struct clk* mmu_clock;
+	struct clk* mmu_axiclock;
+#ifdef CONFIG_HAS_EARLYSUSPEND
+	struct early_suspend	early_suspend;
+#endif
+	void *private;
+	unsigned int map_count;
+	struct mutex mutex_map;
+	unsigned int div2_frq;
+	bool light_sleep_en;
+};
+
+struct sprd_iommu_ops {
+	int (*init)(struct sprd_iommu_dev *dev, struct sprd_iommu_init_data *data);
+	int (*exit)(struct sprd_iommu_dev *dev);
+	unsigned long (*iova_alloc)(struct sprd_iommu_dev *dev, size_t iova_length);
+	void (*iova_free)(struct sprd_iommu_dev *dev, unsigned long iova, size_t iova_length);
+	int (*iova_map)(struct sprd_iommu_dev *dev, unsigned long iova, size_t iova_length, struct sg_table *table);
+	int (*iova_unmap)(struct sprd_iommu_dev *dev, unsigned long iova, size_t iova_length);
+	int (*backup)(struct sprd_iommu_dev *dev);
+	int (*restore)(struct sprd_iommu_dev *dev);
+	void (*enable)(struct sprd_iommu_dev *dev);
+	void (*disable)(struct sprd_iommu_dev *dev);
+	int (*dump)(struct sprd_iommu_dev *dev, unsigned long iova, size_t iova_length);
+	void (*open)(struct sprd_iommu_dev *dev);
+	void (*release)(struct sprd_iommu_dev *dev);
+};
+
+enum IOMMU_ID {
+	IOMMU_GSP = 0,
+	IOMMU_MM,
+	/*for whale iommu*/
+	IOMMU_VSP,
+	IOMMU_DCAM,
+	IOMMU_DISPC,
+	IOMMU_GSP0,
+	IOMMU_GSP1,
+	IOMMU_VPP,
+	IOMMU_MAX,
+};
+
+extern struct sprd_iommu_ops iommu_gsp_ops;
+extern struct sprd_iommu_ops iommu_mm_ops;
+/*for whale iommu*/
+extern struct sprd_iommu_ops iommu_vsp_ops;
+extern struct sprd_iommu_ops iommu_dcam_ops;
+extern struct sprd_iommu_ops iommu_dispc_ops;
+extern struct sprd_iommu_ops iommu_gsp0_ops;
+extern struct sprd_iommu_ops iommu_gsp1_ops;
+extern struct sprd_iommu_ops iommu_vpp_ops;
+
+extern unsigned long sprd_iova_alloc(int iommu_id, unsigned long iova_length);
+extern void sprd_iova_free(int iommu_id, unsigned long iova, unsigned long iova_length);
+extern int sprd_iova_map(int iommu_id, unsigned long iova, unsigned long iova_length, struct sg_table *table);
+extern int sprd_iova_unmap(int iommu_id, unsigned long iova, unsigned long iova_length);
+extern void sprd_iommu_module_enable(uint32_t iommu_id);
+extern void sprd_iommu_module_disable(uint32_t iommu_id);
+#endif