x86 gart: rename CONFIG_IOMMU to CONFIG_GART_IOMMU

This patch renames the IOMMU config option to GART_IOMMU because in fact it
means the GART and not general support for an IOMMU on x86.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/Kconfig.debug

@@ -91,7 +91,7 @@ config DOUBLEFAULT
 
 config IOMMU_DEBUG
 	bool "Enable IOMMU debugging"
-	depends on IOMMU && DEBUG_KERNEL
+	depends on GART_IOMMU && DEBUG_KERNEL
 	depends on X86_64
 	help
 	  Force the IOMMU to on even when you have less than 4GB of

arch/x86/Kconfig.x86_64

@@ -479,7 +479,7 @@ config HPET_EMULATE_RTC
 
 # Mark as embedded because too many people got it wrong.
 # The code disables itself when not needed.
-config IOMMU
+config GART_IOMMU
 	bool "GART IOMMU support" if EMBEDDED
 	default y
 	select SWIOTLB
@@ -687,7 +687,7 @@ source kernel/Kconfig.hz
 
 config K8_NB
 	def_bool y
-	depends on AGP_AMD64 || IOMMU || (PCI && NUMA)
+	depends on AGP_AMD64 || GART_IOMMU || (PCI && NUMA)
 
 endmenu
 

arch/x86/configs/x86_64_defconfig

@@ -170,7 +170,7 @@ CONFIG_HOTPLUG_CPU=y
 CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
 CONFIG_HPET_TIMER=y
 CONFIG_HPET_EMULATE_RTC=y
-CONFIG_IOMMU=y
+CONFIG_GART_IOMMU=y
 # CONFIG_CALGARY_IOMMU is not set
 CONFIG_SWIOTLB=y
 CONFIG_X86_MCE=y

arch/x86/kernel/Makefile_64

@@ -25,7 +25,7 @@ obj-$(CONFIG_CRASH_DUMP)	+= crash_dump_64.o
 obj-$(CONFIG_PM)		+= suspend_64.o
 obj-$(CONFIG_HIBERNATION)	+= suspend_asm_64.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
-obj-$(CONFIG_IOMMU)		+= pci-gart_64.o aperture_64.o
+obj-$(CONFIG_GART_IOMMU)	+= pci-gart_64.o aperture_64.o
 obj-$(CONFIG_CALGARY_IOMMU)	+= pci-calgary_64.o tce_64.o
 obj-$(CONFIG_SWIOTLB)		+= pci-swiotlb_64.o
 obj-$(CONFIG_KPROBES)		+= kprobes_64.o

arch/x86/kernel/early-quirks.c

@@ -17,13 +17,13 @@
 #include <asm/io_apic.h>
 #include <asm/apic.h>
 
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
 #include <asm/gart.h>
 #endif
 
 static void __init via_bugs(void)
 {
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
 	if ((end_pfn > MAX_DMA32_PFN ||  force_iommu) &&
 	    !iommu_aperture_allowed) {
 		printk(KERN_INFO

arch/x86/kernel/pci-dma_64.c

@@ -275,7 +275,7 @@ __init int iommu_setup(char *p)
 			swiotlb = 1;
 #endif
 
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
 		gart_parse_options(p);
 #endif
 
@@ -298,7 +298,7 @@ void __init pci_iommu_alloc(void)
 	 * The order of these functions is important for
 	 * fall-back/fail-over reasons
 	 */
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
 	iommu_hole_init();
 #endif
 
@@ -321,7 +321,7 @@ static int __init pci_iommu_init(void)
 
 	intel_iommu_init();
 
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
 	gart_iommu_init();
 #endif
 

drivers/char/agp/Kconfig

@@ -56,9 +56,9 @@ config AGP_AMD
 	  X on AMD Irongate, 761, and 762 chipsets.
 
 config AGP_AMD64
-	tristate "AMD Opteron/Athlon64 on-CPU GART support" if !IOMMU
+	tristate "AMD Opteron/Athlon64 on-CPU GART support" if !GART_IOMMU
 	depends on AGP && X86
-	default y if IOMMU
+	default y if GART_IOMMU
 	help
 	  This option gives you AGP support for the GLX component of
 	  X using the on-CPU northbridge of the AMD Athlon64/Opteron CPUs.

drivers/char/agp/amd64-agp.c

@@ -787,7 +787,7 @@ static void __exit agp_amd64_cleanup(void)
 
 /* On AMD64 the PCI driver needs to initialize this driver early
    for the IOMMU, so it has to be called via a backdoor. */
-#ifndef CONFIG_IOMMU
+#ifndef CONFIG_GART_IOMMU
 module_init(agp_amd64_init);
 module_exit(agp_amd64_cleanup);
 #endif

drivers/usb/core/message.c

@@ -434,7 +434,7 @@ int usb_sg_init (
 		if (dma) {
 			io->urbs [i]->transfer_dma = sg_dma_address (sg + i);
 			len = sg_dma_len (sg + i);
-#if defined(CONFIG_HIGHMEM) || defined(CONFIG_IOMMU)
+#if defined(CONFIG_HIGHMEM) || defined(CONFIG_GART_IOMMU)
 			io->urbs[i]->transfer_buffer = NULL;
 #else
 			io->urbs[i]->transfer_buffer = sg_virt(&sg[i]);

include/asm-x86/gart.h

@@ -5,7 +5,7 @@ extern void pci_iommu_shutdown(void);
 extern void no_iommu_init(void);
 extern int force_iommu, no_iommu;
 extern int iommu_detected;
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
 extern void gart_iommu_init(void);
 extern void gart_iommu_shutdown(void);
 extern void __init gart_parse_options(char *);

include/asm-x86/pci_64.h

@@ -37,7 +37,7 @@ extern int iommu_setup(char *opt);
  */
 #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
 
-#if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
+#if defined(CONFIG_GART_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
 
 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)	\
 	dma_addr_t ADDR_NAME;