diff options
| author | Joerg Roedel <jroedel@suse.de> | 2017-08-10 01:17:28 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2017-08-17 17:31:34 +0300 |
| commit | c184ae83c8337d8ee0e5e9de9e7ce2fc652137aa (patch) | |
| tree | 2aec5a505939d045dd41c4e013820096354ebcf8 /drivers/iommu | |
| parent | 0b480e447006144ffcfaf178574b9a13344588a6 (diff) | |
| download | linux-c184ae83c8337d8ee0e5e9de9e7ce2fc652137aa.tar.xz | |
iommu/tegra-gart: Add support for struct iommu_device
Add a struct iommu_device to each tegra-gart and register it
with the iommu-core. Also link devices added to the driver
to their respective hardware iommus.
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/tegra-gart.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c index 29bafc6e82ae..b62f790ad1ba 100644 --- a/drivers/iommu/tegra-gart.c +++ b/drivers/iommu/tegra-gart.c @@ -61,6 +61,8 @@ struct gart_device { struct list_head client; spinlock_t client_lock; /* for client list */ struct device *dev; + + struct iommu_device iommu; /* IOMMU Core handle */ }; struct gart_domain { @@ -342,12 +344,16 @@ static int gart_iommu_add_device(struct device *dev) return PTR_ERR(group); iommu_group_put(group); + + iommu_device_link(&gart_handle->iommu, dev); + return 0; } static void gart_iommu_remove_device(struct device *dev) { iommu_group_remove_device(dev); + iommu_device_unlink(&gart_handle->iommu, dev); } static const struct iommu_ops gart_iommu_ops = { @@ -397,6 +403,7 @@ static int tegra_gart_probe(struct platform_device *pdev) struct resource *res, *res_remap; void __iomem *gart_regs; struct device *dev = &pdev->dev; + int ret; if (gart_handle) return -EIO; @@ -423,6 +430,22 @@ static int tegra_gart_probe(struct platform_device *pdev) return -ENXIO; } + ret = iommu_device_sysfs_add(&gart->iommu, &pdev->dev, NULL, + dev_name(&pdev->dev)); + if (ret) { + dev_err(dev, "Failed to register IOMMU in sysfs\n"); + return ret; + } + + iommu_device_set_ops(&gart->iommu, &gart_iommu_ops); + + ret = iommu_device_register(&gart->iommu); + if (ret) { + dev_err(dev, "Failed to register IOMMU\n"); + iommu_device_sysfs_remove(&gart->iommu); + return ret; + } + gart->dev = &pdev->dev; spin_lock_init(&gart->pte_lock); spin_lock_init(&gart->client_lock); @@ -449,6 +472,9 @@ static int tegra_gart_remove(struct platform_device *pdev) { struct gart_device *gart = platform_get_drvdata(pdev); + iommu_device_unregister(&gart->iommu); + iommu_device_sysfs_remove(&gart->iommu); + writel(0, gart->regs + GART_CONFIG); if (gart->savedata) vfree(gart->savedata); |