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

[safe/jmp/linux-2.6] / 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 148fcfe..42c33ce 100644 (file)
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -28,6 +28,7 @@
 #include <asm/amd_iommu_types.h>
 #include <asm/amd_iommu.h>
 #include <asm/iommu.h>
+#include <asm/gart.h>
 
 /*
  * definitions for the ACPI scanning code
@@ -121,7 +122,8 @@ u16 amd_iommu_last_bdf;                     /* largest PCI device id we have
 LIST_HEAD(amd_iommu_unity_map);                /* a list of required unity mappings
                                           we find in ACPI */
 unsigned amd_iommu_aperture_order = 26; /* size of aperture in power of 2 */
-int amd_iommu_isolate;                 /* if 1, device isolation is enabled */
+bool amd_iommu_isolate = true;         /* if true, device isolation is
+                                          enabled */
 bool amd_iommu_unmap_flush;            /* if true, flush on every unmap */
 
 LIST_HEAD(amd_iommu_list);             /* list of all AMD IOMMUs in the
@@ -212,7 +214,7 @@ static void __init iommu_set_exclusion_range(struct amd_iommu *iommu)
 /* Programs the physical address of the device table into the IOMMU hardware */
 static void __init iommu_set_device_table(struct amd_iommu *iommu)
 {
-       u32 entry;
+       u64 entry;
 
        BUG_ON(iommu->mmio_base == NULL);
 
@@ -242,20 +244,16 @@ static void __init iommu_feature_disable(struct amd_iommu *iommu, u8 bit)
 }
 
 /* Function to enable the hardware */
-void __init iommu_enable(struct amd_iommu *iommu)
+static void __init iommu_enable(struct amd_iommu *iommu)
 {
-       printk(KERN_INFO "AMD IOMMU: Enabling IOMMU "
-              "at %02x:%02x.%x cap 0x%hx\n",
-              iommu->dev->bus->number,
-              PCI_SLOT(iommu->dev->devfn),
-              PCI_FUNC(iommu->dev->devfn),
-              iommu->cap_ptr);
+       printk(KERN_INFO "AMD IOMMU: Enabling IOMMU at %s cap 0x%hx\n",
+              dev_name(&iommu->dev->dev), iommu->cap_ptr);
 
        iommu_feature_enable(iommu, CONTROL_IOMMU_EN);
 }
 
 /* Function to enable IOMMU event logging and event interrupts */
-void __init iommu_enable_event_logging(struct amd_iommu *iommu)
+static void __init iommu_enable_event_logging(struct amd_iommu *iommu)
 {
        iommu_feature_enable(iommu, CONTROL_EVT_LOG_EN);
        iommu_feature_enable(iommu, CONTROL_EVT_INT_EN);
@@ -427,6 +425,10 @@ static u8 * __init alloc_command_buffer(struct amd_iommu *iommu)
        memcpy_toio(iommu->mmio_base + MMIO_CMD_BUF_OFFSET,
                        &entry, sizeof(entry));
 
+       /* set head and tail to zero manually */
+       writel(0x00, iommu->mmio_base + MMIO_CMD_HEAD_OFFSET);
+       writel(0x00, iommu->mmio_base + MMIO_CMD_TAIL_OFFSET);
+
        iommu_feature_enable(iommu, CONTROL_CMDBUF_EN);
 
        return cmd_buf;
@@ -723,9 +725,7 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
        init_iommu_from_acpi(iommu, h);
        init_iommu_devices(iommu);
 
-       pci_enable_device(iommu->dev);
-
-       return 0;
+       return pci_enable_device(iommu->dev);
 }
 
 /*
@@ -1076,7 +1076,8 @@ int __init amd_iommu_init(void)
                goto free;
 
        /* IOMMU rlookup table - find the IOMMU for a specific device */
-       amd_iommu_rlookup_table = (void *)__get_free_pages(GFP_KERNEL,
+       amd_iommu_rlookup_table = (void *)__get_free_pages(
+                       GFP_KERNEL | __GFP_ZERO,
                        get_order(rlookup_table_size));
        if (amd_iommu_rlookup_table == NULL)
                goto free;
@@ -1214,8 +1215,10 @@ static int __init parse_amd_iommu_options(char *str)
 {
        for (; *str; ++str) {
                if (strncmp(str, "isolate", 7) == 0)
-                       amd_iommu_isolate = 1;
-               if (strncmp(str, "fullflush", 11) == 0)
+                       amd_iommu_isolate = true;
+               if (strncmp(str, "share", 5) == 0)
+                       amd_iommu_isolate = false;
+               if (strncmp(str, "fullflush", 9) == 0)
                        amd_iommu_unmap_flush = true;
        }