Merge tag 'please-pull-next' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull ia64 updates from Tony Luck:
 "Miscellaneous ia64 fixes from Christoph"

* tag 'please-pull-next' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  intel-iommu: mark intel_dma_ops static
  ia64: remove machvec_dma_sync_{single,sg}
  ia64/sn2: remove no-ops dma sync methods
  ia64: remove the unused iommu_dma_init function
  ia64: remove the unused pci_iommu_shutdown function
  ia64: remove the unused bad_dma_address symbol
  ia64: remove iommu_dma_supported
  ia64: remove the dead iommu_sac_force variable
  ia64: remove the kern_mem_attribute export

arch/ia64/hp/common/sba_iommu.c

@@ -2207,10 +2207,6 @@ const struct dma_map_ops sba_dma_ops = {
 	.unmap_page		= sba_unmap_page,
 	.map_sg			= sba_map_sg_attrs,
 	.unmap_sg		= sba_unmap_sg_attrs,
-	.sync_single_for_cpu	= machvec_dma_sync_single,
-	.sync_sg_for_cpu	= machvec_dma_sync_sg,
-	.sync_single_for_device	= machvec_dma_sync_single,
-	.sync_sg_for_device	= machvec_dma_sync_sg,
 	.dma_supported		= sba_dma_supported,
 	.mapping_error		= sba_dma_mapping_error,
 };

arch/ia64/include/asm/dma-mapping.h

@@ -14,11 +14,6 @@ extern const struct dma_map_ops *dma_ops;
 extern struct ia64_machine_vector ia64_mv;
 extern void set_iommu_machvec(void);
 
-extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t,
-				    enum dma_data_direction);
-extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
-				enum dma_data_direction);
-
 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
 {
 	return platform_dma_get_ops(NULL);

arch/ia64/include/asm/iommu.h

@@ -5,7 +5,6 @@
 /* 10 seconds */
 #define DMAR_OPERATION_TIMEOUT (((cycles_t) local_cpu_data->itc_freq)*10)
 
-extern void pci_iommu_shutdown(void);
 extern void no_iommu_init(void);
 #ifdef	CONFIG_INTEL_IOMMU
 extern int force_iommu, no_iommu;
@@ -16,7 +15,6 @@ extern int iommu_detected;
 #define no_iommu		(1)
 #define iommu_detected		(0)
 #endif
-extern void iommu_dma_init(void);
 extern void machvec_init(const char *name);
 
 #endif

arch/ia64/kernel/efi.c

@@ -842,7 +842,6 @@ kern_mem_attribute (unsigned long phys_addr, unsigned long size)
 	} while (md);
 	return 0;	/* never reached */
 }
-EXPORT_SYMBOL(kern_mem_attribute);
 
 int
 valid_phys_addr_range (phys_addr_t phys_addr, unsigned long size)

arch/ia64/kernel/machvec.c

@@ -73,19 +73,3 @@ machvec_timer_interrupt (int irq, void *dev_id)
 {
 }
 EXPORT_SYMBOL(machvec_timer_interrupt);
-
-void
-machvec_dma_sync_single(struct device *hwdev, dma_addr_t dma_handle, size_t size,
-			enum dma_data_direction dir)
-{
-	mb();
-}
-EXPORT_SYMBOL(machvec_dma_sync_single);
-
-void
-machvec_dma_sync_sg(struct device *hwdev, struct scatterlist *sg, int n,
-		    enum dma_data_direction dir)
-{
-	mb();
-}
-EXPORT_SYMBOL(machvec_dma_sync_sg);

arch/ia64/kernel/pci-dma.c

@@ -15,11 +15,6 @@
 #include <linux/kernel.h>
 #include <asm/page.h>
 
-dma_addr_t bad_dma_address __read_mostly;
-EXPORT_SYMBOL(bad_dma_address);
-
-static int iommu_sac_force __read_mostly;
-
 int no_iommu __read_mostly;
 #ifdef CONFIG_IOMMU_DEBUG
 int force_iommu __read_mostly = 1;
@@ -29,8 +24,6 @@ int force_iommu __read_mostly;
 
 int iommu_pass_through;
 
-extern struct dma_map_ops intel_dma_ops;
-
 static int __init pci_iommu_init(void)
 {
 	if (iommu_detected)
@@ -42,56 +35,8 @@ static int __init pci_iommu_init(void)
 /* Must execute after PCI subsystem */
 fs_initcall(pci_iommu_init);
 
-void pci_iommu_shutdown(void)
-{
-	return;
-}
-
-void __init
-iommu_dma_init(void)
-{
-	return;
-}
-
-int iommu_dma_supported(struct device *dev, u64 mask)
-{
-	/* Copied from i386. Doesn't make much sense, because it will
-	   only work for pci_alloc_coherent.
-	   The caller just has to use GFP_DMA in this case. */
-	if (mask < DMA_BIT_MASK(24))
-		return 0;
-
-	/* Tell the device to use SAC when IOMMU force is on.  This
-	   allows the driver to use cheaper accesses in some cases.
-
-	   Problem with this is that if we overflow the IOMMU area and
-	   return DAC as fallback address the device may not handle it
-	   correctly.
-
-	   As a special case some controllers have a 39bit address
-	   mode that is as efficient as 32bit (aic79xx). Don't force
-	   SAC for these.  Assume all masks <= 40 bits are of this
-	   type. Normally this doesn't make any difference, but gives
-	   more gentle handling of IOMMU overflow. */
-	if (iommu_sac_force && (mask >= DMA_BIT_MASK(40))) {
-		dev_info(dev, "Force SAC with mask %llx\n", mask);
-		return 0;
-	}
-
-	return 1;
-}
-EXPORT_SYMBOL(iommu_dma_supported);
-
 void __init pci_iommu_alloc(void)
 {
-	dma_ops = &intel_dma_ops;
-
-	intel_dma_ops.sync_single_for_cpu = machvec_dma_sync_single;
-	intel_dma_ops.sync_sg_for_cpu = machvec_dma_sync_sg;
-	intel_dma_ops.sync_single_for_device = machvec_dma_sync_single;
-	intel_dma_ops.sync_sg_for_device = machvec_dma_sync_sg;
-	intel_dma_ops.dma_supported = iommu_dma_supported;
-
 	/*
 	 * The order of these functions is important for
 	 * fall-back/fail-over reasons

arch/ia64/sn/pci/pci_dma.c

@@ -314,31 +314,6 @@ static int sn_dma_map_sg(struct device *dev, struct scatterlist *sgl,
 	return nhwentries;
 }
 
-static void sn_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
-				       size_t size, enum dma_data_direction dir)
-{
-	BUG_ON(!dev_is_pci(dev));
-}
-
-static void sn_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
-					  size_t size,
-					  enum dma_data_direction dir)
-{
-	BUG_ON(!dev_is_pci(dev));
-}
-
-static void sn_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
-				   int nelems, enum dma_data_direction dir)
-{
-	BUG_ON(!dev_is_pci(dev));
-}
-
-static void sn_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
-				      int nelems, enum dma_data_direction dir)
-{
-	BUG_ON(!dev_is_pci(dev));
-}
-
 static int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 {
 	return 0;
@@ -466,10 +441,6 @@ static struct dma_map_ops sn_dma_ops = {
 	.unmap_page		= sn_dma_unmap_page,
 	.map_sg			= sn_dma_map_sg,
 	.unmap_sg		= sn_dma_unmap_sg,
-	.sync_single_for_cpu 	= sn_dma_sync_single_for_cpu,
-	.sync_sg_for_cpu	= sn_dma_sync_sg_for_cpu,
-	.sync_single_for_device = sn_dma_sync_single_for_device,
-	.sync_sg_for_device	= sn_dma_sync_sg_for_device,
 	.mapping_error		= sn_dma_mapping_error,
 	.dma_supported		= sn_dma_supported,
 	.get_required_mask	= sn_dma_get_required_mask,

drivers/iommu/intel-iommu.c

@@ -3895,7 +3895,7 @@ static int intel_mapping_error(struct device *dev, dma_addr_t dma_addr)
 	return !dma_addr;
 }
 
-const struct dma_map_ops intel_dma_ops = {
+static const struct dma_map_ops intel_dma_ops = {
 	.alloc = intel_alloc_coherent,
 	.free = intel_free_coherent,
 	.map_sg = intel_map_sg,
@@ -3903,9 +3903,7 @@ const struct dma_map_ops intel_dma_ops = {
 	.map_page = intel_map_page,
 	.unmap_page = intel_unmap_page,
 	.mapping_error = intel_mapping_error,
-#ifdef CONFIG_X86
 	.dma_supported = dma_direct_supported,
-#endif
 };
 
 static inline int iommu_domain_cache_init(void)