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Merge tag 'iommu-updates-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

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Pull IOMMU updates from Joerg Roedel:

 - OF_IOMMU support for the Rockchip iommu driver so that it can use
   generic DT bindings

 - rework of locking in the AMD IOMMU interrupt remapping code to make
   it work better in RT kernels

 - support for improved iotlb flushing in the AMD IOMMU driver

 - support for 52-bit physical and virtual addressing in the ARM-SMMU

 - various other small fixes and cleanups

* tag 'iommu-updates-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (53 commits)
  iommu/io-pgtable-arm: Avoid warning with 32-bit phys_addr_t
  iommu/rockchip: Support sharing IOMMU between masters
  iommu/rockchip: Add runtime PM support
  iommu/rockchip: Fix error handling in init
  iommu/rockchip: Use OF_IOMMU to attach devices automatically
  iommu/rockchip: Use IOMMU device for dma mapping operations
  dt-bindings: iommu/rockchip: Add clock property
  iommu/rockchip: Control clocks needed to access the IOMMU
  iommu/rockchip: Fix TLB flush of secondary IOMMUs
  iommu/rockchip: Use iopoll helpers to wait for hardware
  iommu/rockchip: Fix error handling in attach
  iommu/rockchip: Request irqs in rk_iommu_probe()
  iommu/rockchip: Fix error handling in probe
  iommu/rockchip: Prohibit unbind and remove
  iommu/amd: Return proper error code in irq_remapping_alloc()
  iommu/amd: Make amd_iommu_devtable_lock a spin_lock
  iommu/amd: Drop the lock while allocating new irq remap table
  iommu/amd: Factor out setting the remap table for a devid
  iommu/amd: Use `table' instead `irt' as variable name in amd_iommu_update_ga()
  iommu/amd: Remove the special case from alloc_irq_table()
  ...
This commit is contained in:
Linus Torvalds
2018-04-11 18:50:41 -07:00
parent 1fe43114ea d4f96fd5c2
commit e5c372280b
25 changed files with 1011 additions and 856 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
drivers/iommu/mtk_iommu_v1.c
View File

@@ -417,20 +417,12 @@ static int mtk_iommu_create_mapping(struct device *dev,
m4udev->archdata.iommu = mtk_mapping;
}
ret = arm_iommu_attach_device(dev, mtk_mapping);
if (ret)
goto err_release_mapping;
return 0;
err_release_mapping:
arm_iommu_release_mapping(mtk_mapping);
m4udev->archdata.iommu = NULL;
return ret;
}
static int mtk_iommu_add_device(struct device *dev)
{
struct dma_iommu_mapping *mtk_mapping;
struct of_phandle_args iommu_spec;
struct of_phandle_iterator it;
struct mtk_iommu_data *data;
@@ -451,15 +443,30 @@ static int mtk_iommu_add_device(struct device *dev)
if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
return -ENODEV; /* Not a iommu client device */
data = dev->iommu_fwspec->iommu_priv;
iommu_device_link(&data->iommu, dev);
group = iommu_group_get_for_dev(dev);
/*
* This is a short-term bodge because the ARM DMA code doesn't
* understand multi-device groups, but we have to call into it
* successfully (and not just rely on a normal IOMMU API attach
* here) in order to set the correct DMA API ops on @dev.
*/
group = iommu_group_alloc();
if (IS_ERR(group))
return PTR_ERR(group);
err = iommu_group_add_device(group, dev);
iommu_group_put(group);
return 0;
if (err)
return err;
data = dev->iommu_fwspec->iommu_priv;
mtk_mapping = data->dev->archdata.iommu;
err = arm_iommu_attach_device(dev, mtk_mapping);
if (err) {
iommu_group_remove_device(dev);
return err;
}
return iommu_device_link(&data->iommu, dev);;
}
static void mtk_iommu_remove_device(struct device *dev)
@@ -476,24 +483,6 @@ static void mtk_iommu_remove_device(struct device *dev)
iommu_fwspec_free(dev);
}
static struct iommu_group *mtk_iommu_device_group(struct device *dev)
{
struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv;
if (!data)
return ERR_PTR(-ENODEV);
/* All the client devices are in the same m4u iommu-group */
if (!data->m4u_group) {
data->m4u_group = iommu_group_alloc();
if (IS_ERR(data->m4u_group))
dev_err(dev, "Failed to allocate M4U IOMMU group\n");
} else {
iommu_group_ref_get(data->m4u_group);
}
return data->m4u_group;
}
static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
{
u32 regval;
@@ -546,7 +535,6 @@ static struct iommu_ops mtk_iommu_ops = {
.iova_to_phys = mtk_iommu_iova_to_phys,
.add_device = mtk_iommu_add_device,
.remove_device = mtk_iommu_remove_device,
.device_group = mtk_iommu_device_group,
.pgsize_bitmap = ~0UL << MT2701_IOMMU_PAGE_SHIFT,
};