Merge tag 'iommu-updates-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:

 - big-endian support and preparation for defered probing for the Exynos
   IOMMU driver

 - simplifications in iommu-group id handling

 - support for Mediatek generation one IOMMU hardware

 - conversion of the AMD IOMMU driver to use the generic IOVA allocator.
   This driver now also benefits from the recent scalability
   improvements in the IOVA code.

 - preparations to use generic DMA mapping code in the Rockchip IOMMU
   driver

 - device tree adaption and conversion to use generic page-table code
   for the MSM IOMMU driver

 - an iova_to_phys optimization in the ARM-SMMU driver to greatly
   improve page-table teardown performance with VFIO

 - various other small fixes and conversions

* tag 'iommu-updates-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (59 commits)
  iommu/amd: Initialize dma-ops domains with 3-level page-table
  iommu/amd: Update Alias-DTE in update_device_table()
  iommu/vt-d: Return error code in domain_context_mapping_one()
  iommu/amd: Use container_of to get dma_ops_domain
  iommu/amd: Flush iova queue before releasing dma_ops_domain
  iommu/amd: Handle IOMMU_DOMAIN_DMA in ops->domain_free call-back
  iommu/amd: Use dev_data->domain in get_domain()
  iommu/amd: Optimize map_sg and unmap_sg
  iommu/amd: Introduce dir2prot() helper
  iommu/amd: Implement timeout to flush unmap queues
  iommu/amd: Implement flush queue
  iommu/amd: Allow NULL pointer parameter for domain_flush_complete()
  iommu/amd: Set up data structures for flush queue
  iommu/amd: Remove align-parameter from __map_single()
  iommu/amd: Remove other remains of old address allocator
  iommu/amd: Make use of the generic IOVA allocator
  iommu/amd: Remove special mapping code for dma_ops path
  iommu/amd: Pass gfp-flags to iommu_map_page()
  iommu/amd: Implement apply_dm_region call-back
  iommu/amd: Create a list of reserved iova addresses
  ...

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