Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / amd_iommu_init.c

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index c9d8ff2eb130b3ed384bc525ef13a5c4784161d7..a69cc0f5204286a9ead45b580e2f506c00a88f2a 100644 (file)
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -732,7 +732,7 @@ static int __init init_exclusion_range(struct ivmd_header *m)
                set_device_exclusion_range(m->devid, m);
                break;
        case ACPI_IVMD_TYPE_ALL:
-               for (i = 0; i < amd_iommu_last_bdf; ++i)
+               for (i = 0; i <= amd_iommu_last_bdf; ++i)
                        set_device_exclusion_range(i, m);
                break;
        case ACPI_IVMD_TYPE_RANGE:
@@ -800,6 +800,21 @@ static int __init init_memory_definitions(struct acpi_table_header *table)
        return 0;
 }
 
+/*
+ * Init the device table to not allow DMA access for devices and
+ * suppress all page faults
+ */
+static void init_device_table(void)
+{
+       u16 devid;
+
+       for (devid = 0; devid <= amd_iommu_last_bdf; ++devid) {
+               set_dev_entry_bit(devid, DEV_ENTRY_VALID);
+               set_dev_entry_bit(devid, DEV_ENTRY_TRANSLATION);
+               set_dev_entry_bit(devid, DEV_ENTRY_NO_PAGE_FAULT);
+       }
+}
+
 /*
  * This function finally enables all IOMMUs found in the system after
  * they have been initialized
@@ -931,10 +946,13 @@ int __init amd_iommu_init(void)
        if (amd_iommu_pd_alloc_bitmap == NULL)
                goto free;
 
+       /* init the device table */
+       init_device_table();
+
        /*
         * let all alias entries point to itself
         */
-       for (i = 0; i < amd_iommu_last_bdf; ++i)
+       for (i = 0; i <= amd_iommu_last_bdf; ++i)
                amd_iommu_alias_table[i] = i;
 
        /*
@@ -954,15 +972,15 @@ int __init amd_iommu_init(void)
        if (acpi_table_parse("IVRS", init_memory_definitions) != 0)
                goto free;
 
-       ret = amd_iommu_init_dma_ops();
+       ret = sysdev_class_register(&amd_iommu_sysdev_class);
        if (ret)
                goto free;
 
-       ret = sysdev_class_register(&amd_iommu_sysdev_class);
+       ret = sysdev_register(&device_amd_iommu);
        if (ret)
                goto free;
 
-       ret = sysdev_register(&device_amd_iommu);
+       ret = amd_iommu_init_dma_ops();
        if (ret)
                goto free;