x86 gart: rename symbols only used for the GART implementation

This patch renames the 4 symbols iommu_hole_init(), iommu_aperture,
iommu_aperture_allowed, iommu_aperture_disabled. All these symbols are only
used for the GART implementation of IOMMUs.

It adds and additional gart_ prefix to them.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

4 files changed, 14 insertions, 13 deletions

diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 70c854fdfb2..5b6992799c9 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -25,9 +25,9 @@
 #include <asm/dma.h>
 #include <asm/k8.h>
 
-int iommu_aperture;
-int iommu_aperture_disabled __initdata = 0;
-int iommu_aperture_allowed __initdata = 0;
+int gart_iommu_aperture;
+int gart_iommu_aperture_disabled __initdata = 0;
+int gart_iommu_aperture_allowed __initdata = 0;
 
 int fallback_aper_order __initdata = 1; /* 64MB */
 int fallback_aper_force __initdata = 0; 
@@ -204,14 +204,15 @@ static __u32 __init search_agp_bridge(u32 *order, int *valid_agp)
         return 0;
 }
 
-void __init iommu_hole_init(void) 
+void __init gart_iommu_hole_init(void)
 { 
         int fix, num; 
         u32 aper_size, aper_alloc = 0, aper_order = 0, last_aper_order = 0;
         u64 aper_base, last_aper_base = 0;
         int valid_agp = 0;
 
-        if (iommu_aperture_disabled || !fix_aperture || !early_pci_allowed())
+        if (gart_iommu_aperture_disabled || !fix_aperture ||
+            !early_pci_allowed())
                 return;
 
         printk(KERN_INFO  "Checking aperture...\n");
@@ -222,7 +223,7 @@ void __init iommu_hole_init(void)
                         continue;
 
                 iommu_detected = 1;
-                iommu_aperture = 1; 
+                gart_iommu_aperture = 1;
 
                 aper_order = (read_pci_config(0, num, 3, 0x90) >> 1) & 7; 
                 aper_size = (32 * 1024 * 1024) << aper_order; 
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index b8265c1ea0d..88bb83ec895 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -25,11 +25,11 @@ static void __init via_bugs(void)
 {
 #ifdef CONFIG_GART_IOMMU
         if ((end_pfn > MAX_DMA32_PFN ||  force_iommu) &&
-            !iommu_aperture_allowed) {
+            !gart_iommu_aperture_allowed) {
                 printk(KERN_INFO
                        "Looks like a VIA chipset. Disabling IOMMU."
                        " Override with iommu=allowed\n");
-                iommu_aperture_disabled = 1;
+                gart_iommu_aperture_disabled = 1;
         }
 #endif
 }
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c
index 66b3dc5b3f4..aa805b11b24 100644
--- a/arch/x86/kernel/pci-dma_64.c
+++ b/arch/x86/kernel/pci-dma_64.c
@@ -299,7 +299,7 @@ void __init pci_iommu_alloc(void)
          * fall-back/fail-over reasons
          */
 #ifdef CONFIG_GART_IOMMU
-        iommu_hole_init();
+        gart_iommu_hole_init();
 #endif
 
 #ifdef CONFIG_CALGARY_IOMMU
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 3be0b83dc4c..06bcba53604 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -627,12 +627,12 @@ void __init gart_iommu_init(void)
                 return;
 
         /* Did we detect a different HW IOMMU? */
-        if (iommu_detected && !iommu_aperture)
+        if (iommu_detected && !gart_iommu_aperture)
                 return;
 
         if (no_iommu ||
             (!force_iommu && end_pfn <= MAX_DMA32_PFN) ||
-            !iommu_aperture ||
+            !gart_iommu_aperture ||
             (no_agp && init_k8_gatt(&info) < 0)) {
                 if (end_pfn > MAX_DMA32_PFN) {
                         printk(KERN_ERR "WARNING more than 4GB of memory "
@@ -733,9 +733,9 @@ void __init gart_parse_options(char *p)
                 fix_aperture = 0;
         /* duplicated from pci-dma.c */
         if (!strncmp(p,"force",5))
-                iommu_aperture_allowed = 1;
+                gart_iommu_aperture_allowed = 1;
         if (!strncmp(p,"allowed",7))
-                iommu_aperture_allowed = 1;
+                gart_iommu_aperture_allowed = 1;
         if (!strncmp(p, "memaper", 7)) {
                 fallback_aper_force = 1;
                 p += 7;