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Diffstat (limited to 'drivers/iommu/msm_iommu.h')
-rw-r--r--drivers/iommu/msm_iommu.h73
1 files changed, 26 insertions, 47 deletions
diff --git a/drivers/iommu/msm_iommu.h b/drivers/iommu/msm_iommu.h
index 5c7c955e6d25..4ca25d50d679 100644
--- a/drivers/iommu/msm_iommu.h
+++ b/drivers/iommu/msm_iommu.h
@@ -42,74 +42,53 @@
*/
#define MAX_NUM_MIDS 32
+/* Maximum number of context banks that can be present in IOMMU */
+#define IOMMU_MAX_CBS 128
+
/**
* struct msm_iommu_dev - a single IOMMU hardware instance
- * name Human-readable name given to this IOMMU HW instance
* ncb Number of context banks present on this IOMMU HW instance
+ * dev: IOMMU device
+ * irq: Interrupt number
+ * clk: The bus clock for this IOMMU hardware instance
+ * pclk: The clock for the IOMMU bus interconnect
+ * dev_node: list head in qcom_iommu_device_list
+ * dom_node: list head for domain
+ * ctx_list: list of 'struct msm_iommu_ctx_dev'
+ * context_map: Bitmap to track allocated context banks
*/
struct msm_iommu_dev {
- const char *name;
+ void __iomem *base;
int ncb;
+ struct device *dev;
+ int irq;
+ struct clk *clk;
+ struct clk *pclk;
+ struct list_head dev_node;
+ struct list_head dom_node;
+ struct list_head ctx_list;
+ DECLARE_BITMAP(context_map, IOMMU_MAX_CBS);
};
/**
* struct msm_iommu_ctx_dev - an IOMMU context bank instance
- * name Human-readable name given to this context bank
+ * of_node node ptr of client device
* num Index of this context bank within the hardware
* mids List of Machine IDs that are to be mapped into this context
* bank, terminated by -1. The MID is a set of signals on the
* AXI bus that identifies the function associated with a specific
* memory request. (See ARM spec).
+ * num_mids Total number of mids
+ * node list head in ctx_list
*/
struct msm_iommu_ctx_dev {
- const char *name;
+ struct device_node *of_node;
int num;
int mids[MAX_NUM_MIDS];
+ int num_mids;
+ struct list_head list;
};
-
-/**
- * struct msm_iommu_drvdata - A single IOMMU hardware instance
- * @base: IOMMU config port base address (VA)
- * @ncb The number of contexts on this IOMMU
- * @irq: Interrupt number
- * @clk: The bus clock for this IOMMU hardware instance
- * @pclk: The clock for the IOMMU bus interconnect
- *
- * A msm_iommu_drvdata holds the global driver data about a single piece
- * of an IOMMU hardware instance.
- */
-struct msm_iommu_drvdata {
- void __iomem *base;
- int irq;
- int ncb;
- struct clk *clk;
- struct clk *pclk;
-};
-
-/**
- * struct msm_iommu_ctx_drvdata - an IOMMU context bank instance
- * @num: Hardware context number of this context
- * @pdev: Platform device associated wit this HW instance
- * @attached_elm: List element for domains to track which devices are
- * attached to them
- *
- * A msm_iommu_ctx_drvdata holds the driver data for a single context bank
- * within each IOMMU hardware instance
- */
-struct msm_iommu_ctx_drvdata {
- int num;
- struct platform_device *pdev;
- struct list_head attached_elm;
-};
-
-/*
- * Look up an IOMMU context device by its context name. NULL if none found.
- * Useful for testing and drivers that do not yet fully have IOMMU stuff in
- * their platform devices.
- */
-struct device *msm_iommu_get_ctx(const char *ctx_name);
-
/*
* Interrupt handler for the IOMMU context fault interrupt. Hooking the
* interrupt is not supported in the API yet, but this will print an error