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Commit 01611fe8 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/omap: Make use of 'struct iommu_device' 



Modify the driver to register individual iommus and
establish links between devices and iommus in sysfs.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
[s-anna@ti.com: fix some cleanup issues during failures]
Signed-off-by: default avatarSuman Anna <s-anna@ti.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent ede1c2e7

drivers/iommu/omap-iommu.c

+30 −0
Original line number Diff line number Diff line
@@ -36,6 +36,8 @@ 
#include "omap-iopgtable.h"

#include "omap-iommu.h"



static const struct iommu_ops omap_iommu_ops;



#define to_iommu(dev)							\

	((struct omap_iommu *)platform_get_drvdata(to_platform_device(dev)))
@@ -941,6 +943,16 @@ static int omap_iommu_probe(struct platform_device *pdev) 
		return err;

	platform_set_drvdata(pdev, obj);



	err = iommu_device_sysfs_add(&obj->iommu, obj->dev, NULL, obj->name);

	if (err)

		return err;



	iommu_device_set_ops(&obj->iommu, &omap_iommu_ops);



	err = iommu_device_register(&obj->iommu);

	if (err)

		goto out_sysfs;



	pm_runtime_irq_safe(obj->dev);

	pm_runtime_enable(obj->dev);
@@ -948,12 +960,19 @@ static int omap_iommu_probe(struct platform_device *pdev) 


	dev_info(&pdev->dev, "%s registered\n", obj->name);

	return 0;



out_sysfs:

	iommu_device_sysfs_remove(&obj->iommu);

	return err;

}



static int omap_iommu_remove(struct platform_device *pdev)

{

	struct omap_iommu *obj = platform_get_drvdata(pdev);



	iommu_device_sysfs_remove(&obj->iommu);

	iommu_device_unregister(&obj->iommu);



	omap_iommu_debugfs_remove(obj);



	pm_runtime_disable(obj->dev);
@@ -1200,6 +1219,7 @@ static int omap_iommu_add_device(struct device *dev) 
	struct omap_iommu *oiommu;

	struct device_node *np;

	struct platform_device *pdev;

	int ret;



	/*

	 * Allocate the archdata iommu structure for DT-based devices.
@@ -1232,6 +1252,13 @@ static int omap_iommu_add_device(struct device *dev) 
		return -ENOMEM;

	}



	ret = iommu_device_link(&oiommu->iommu, dev);

	if (ret) {

		kfree(arch_data);

		of_node_put(np);

		return ret;

	}



	arch_data->iommu_dev = oiommu;

	dev->archdata.iommu = arch_data;
@@ -1247,8 +1274,11 @@ static void omap_iommu_remove_device(struct device *dev) 
	if (!dev->of_node || !arch_data)

		return;



	iommu_device_unlink(&arch_data->iommu_dev->iommu, dev);



	dev->archdata.iommu = NULL;

	kfree(arch_data);



}



static const struct iommu_ops omap_iommu_ops = {

drivers/iommu/omap-iommu.h

+2 −0
Original line number Diff line number Diff line
@@ -68,6 +68,8 @@ struct omap_iommu { 


	int has_bus_err_back;

	u32 id;



	struct iommu_device iommu;

};



/**