PCI fixes for sn2

diff -Nru a/arch/ia64/sn/io/machvec/pci.c b/arch/ia64/sn/io/machvec/pci.c
@@ -49,6 +49,8 @@
 	vertex_hdl_t device_vertex;
 
 	device_vertex = devfn_to_vertex(bus->number, devfn);
+	if (!device_vertex)
+		return PCIBIOS_DEVICE_NOT_FOUND;
 	res = pciio_config_get(device_vertex, (unsigned) where, size);
 	*val = (unsigned int) res;
 	return PCIBIOS_SUCCESSFUL;

@@ -59,6 +61,8 @@
 	vertex_hdl_t device_vertex;
 
 	device_vertex = devfn_to_vertex(bus->number, devfn);
+	if (!device_vertex)
+		return PCIBIOS_DEVICE_NOT_FOUND;
 	pciio_config_set( device_vertex, (unsigned)where, size, (uint64_t) val);
 	return PCIBIOS_SUCCESSFUL;
 }

diff -Nru a/arch/ia64/sn/io/machvec/pci_dma.c b/arch/ia64/sn/io/machvec/pci_dma.c
@@ -280,7 +280,7 @@
 	 */
 	for (i = 0; i < nents; i++, sg++) {
 		phys_addr = __pa(sg->dma_address ? sg->dma_address :
-			page_address(sg->page) + sg->offset);
+			(unsigned long)page_address(sg->page) + sg->offset);
 
 		/*
 		 * Handle the most common case: 64 bit cards.  This

@@ -578,7 +578,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	return pci_dma_supported(to_pci_dev(dev), mask);
+	return sn_pci_dma_supported(to_pci_dev(dev), mask);
 }
 EXPORT_SYMBOL(sn_dma_supported);
 

@@ -587,7 +587,11 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
+	if (!sn_dma_supported(to_pci_dev(dev), dma_mask))
+		return 0;
+
+	dev->dma_mask = dma_mask;
+	return 1;
 }
 EXPORT_SYMBOL(sn_dma_set_mask);
 

@@ -597,7 +601,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	return pci_alloc_consistent(to_pci_dev(dev), size, dma_handle);
+	return sn_pci_alloc_consistent(to_pci_dev(dev), size, dma_handle);
 }
 EXPORT_SYMBOL(sn_dma_alloc_coherent);
 

@@ -607,7 +611,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	pci_free_consistent(to_pci_dev(dev), size, cpu_addr, dma_handle);
+	sn_pci_free_consistent(to_pci_dev(dev), size, cpu_addr, dma_handle);
 }
 EXPORT_SYMBOL(sn_dma_free_coherent);
 

@@ -617,7 +621,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	return pci_map_single(to_pci_dev(dev), cpu_addr, size, (int)direction);
+	return sn_pci_map_single(to_pci_dev(dev), cpu_addr, size, (int)direction);
 }
 EXPORT_SYMBOL(sn_dma_map_single);
 

@@ -627,7 +631,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	pci_unmap_single(to_pci_dev(dev), dma_addr, size, (int)direction);
+	sn_pci_unmap_single(to_pci_dev(dev), dma_addr, size, (int)direction);
 }
 EXPORT_SYMBOL(sn_dma_unmap_single);
 

@@ -658,7 +662,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	return pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction);
+	return sn_pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction);
 }
 EXPORT_SYMBOL(sn_dma_map_sg);
 

@@ -668,7 +672,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	pci_unmap_sg(to_pci_dev(dev), sg, nhwentries, (int)direction);
+	sn_pci_unmap_sg(to_pci_dev(dev), sg, nhwentries, (int)direction);
 }
 EXPORT_SYMBOL(sn_dma_unmap_sg);
 

@@ -678,7 +682,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	pci_dma_sync_single(to_pci_dev(dev), dma_handle, size, (int)direction);
+	sn_pci_dma_sync_single(to_pci_dev(dev), dma_handle, size, (int)direction);
 }
 EXPORT_SYMBOL(sn_dma_sync_single);
 

@@ -688,7 +692,7 @@
 {
 	BUG_ON(dev->bus != &pci_bus_type);
 
-	pci_dma_sync_sg(to_pci_dev(dev), sg, nelems, (int)direction);
+	sn_pci_dma_sync_sg(to_pci_dev(dev), sg, nelems, (int)direction);
 }
 EXPORT_SYMBOL(sn_dma_sync_sg);