diff options
Diffstat (limited to 'drivers/iommu/amd_iommu_init.c')
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 0e08545d7298..3783e0b44df6 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -26,6 +26,7 @@ #include <linux/msi.h> #include <linux/amd-iommu.h> #include <linux/export.h> +#include <linux/iommu.h> #include <asm/pci-direct.h> #include <asm/iommu.h> #include <asm/gart.h> @@ -1197,6 +1198,39 @@ static void init_iommu_perf_ctr(struct amd_iommu *iommu) iommu->max_counters = (u8) ((val >> 7) & 0xf); } +static ssize_t amd_iommu_show_cap(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct amd_iommu *iommu = dev_get_drvdata(dev); + return sprintf(buf, "%x\n", iommu->cap); +} +static DEVICE_ATTR(cap, S_IRUGO, amd_iommu_show_cap, NULL); + +static ssize_t amd_iommu_show_features(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct amd_iommu *iommu = dev_get_drvdata(dev); + return sprintf(buf, "%llx\n", iommu->features); +} +static DEVICE_ATTR(features, S_IRUGO, amd_iommu_show_features, NULL); + +static struct attribute *amd_iommu_attrs[] = { + &dev_attr_cap.attr, + &dev_attr_features.attr, + NULL, +}; + +static struct attribute_group amd_iommu_group = { + .name = "amd-iommu", + .attrs = amd_iommu_attrs, +}; + +static const struct attribute_group *amd_iommu_groups[] = { + &amd_iommu_group, + NULL, +}; static int iommu_init_pci(struct amd_iommu *iommu) { @@ -1297,6 +1331,10 @@ static int iommu_init_pci(struct amd_iommu *iommu) amd_iommu_erratum_746_workaround(iommu); + iommu->iommu_dev = iommu_device_create(&iommu->dev->dev, iommu, + amd_iommu_groups, "ivhd%d", + iommu->index); + return pci_enable_device(iommu->dev); } |