[PATCH] ia64: add "platform_data" to struct pci_controller, update SN2 accordingly

Here's a small mod for Altix. It breaks up our 'pci fixup' function and
has some other smallish clean ups.

For the ia64 crowd I've added 'platform_data' to struct pci_controller.

arch/ia64/sn/io/machvec/pci_dma.c

@@ -127,7 +127,7 @@ sn_pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_hand
 	/*
 	 * Get hwgraph vertex for the device
 	 */
-	device_sysdata = (struct sn_device_sysdata *) hwdev->sysdata;
+	device_sysdata = SN_DEVICE_SYSDATA(hwdev);
 	vhdl = device_sysdata->vhdl;
 
 	/*
@@ -240,7 +240,7 @@ sn_pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents, int dire
 	/*
 	 * Get the hwgraph vertex for the device
 	 */
-	device_sysdata = (struct sn_device_sysdata *) hwdev->sysdata;
+	device_sysdata = SN_DEVICE_SYSDATA(hwdev);
 	vhdl = device_sysdata->vhdl;
 
 	/*
@@ -367,7 +367,7 @@ sn_pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction)
 	/*
 	 * find vertex for the device
 	 */
-	device_sysdata = (struct sn_device_sysdata *)hwdev->sysdata;
+	device_sysdata = SN_DEVICE_SYSDATA(hwdev);
 	vhdl = device_sysdata->vhdl;
 
 	/*

arch/ia64/sn/io/sn2/pic.c

@@ -90,10 +90,15 @@ pic_bus1_widget_info_dup(vertex_hdl_t conn_v, vertex_hdl_t peer_conn_v,
     		peer_widget_info->w_efunc = 0;
     		peer_widget_info->w_einfo = 0;
 		peer_widget_info->w_name = kmalloc(strlen(peer_path) + 1, GFP_KERNEL);
+		if (!peer_widget_info->w_name) {
+			kfree(peer_widget_info);
+			return -ENOMEM;
+		}
 		strcpy(peer_widget_info->w_name, peer_path);
 
 		if (hwgraph_info_add_LBL(peer_conn_v, INFO_LBL_XWIDGET,
 			(arbitrary_info_t)peer_widget_info) != GRAPH_SUCCESS) {
+			kfree(peer_widget_info->w_name);
 				kfree(peer_widget_info);
 				return 0;
 		}
@@ -359,6 +364,9 @@ pic_attach2(vertex_hdl_t xconn_vhdl, void *bridge,
 
     s = dev_to_name(pcibr_vhdl, devnm, MAXDEVNAME);
     pcibr_soft->bs_name = kmalloc(strlen(s) + 1, GFP_KERNEL);
+    if (!pcibr_soft->bs_name)
+	    return -ENOMEM;
+
     strcpy(pcibr_soft->bs_name, s);
 
     pcibr_soft->bs_conn = xconn_vhdl;

include/asm-ia64/pci.h

@@ -97,6 +97,8 @@ struct pci_controller {
 
 	unsigned int windows;
 	struct pci_window *window;
+
+	void *platform_data;
 };
 
 #define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)

include/asm-ia64/sn/pci/pci_bus_cvlink.h

@@ -31,14 +31,15 @@
 #define MAX_PCI_XWIDGET 256
 #define MAX_ATE_MAPS 1024
 
+#define SN_DEVICE_SYSDATA(dev) \
+	((struct sn_device_sysdata *) \
+	(((struct pci_controller *) ((dev)->sysdata))->platform_data))
+
 #define IS_PCI32G(dev)	((dev)->dma_mask >= 0xffffffff)
 #define IS_PCI32L(dev)	((dev)->dma_mask < 0xffffffff)
 
 #define PCIDEV_VERTEX(pci_dev) \
-	(((struct sn_device_sysdata *)((pci_dev)->sysdata))->vhdl)
-
-#define PCIBUS_VERTEX(pci_bus) \
-	(((struct sn_widget_sysdata *)((pci_bus)->sysdata))->vhdl)
+	((SN_DEVICE_SYSDATA(pci_dev))->vhdl)
 
 struct sn_widget_sysdata {
         vertex_hdl_t  vhdl;
@@ -47,6 +48,9 @@ struct sn_widget_sysdata {
 struct sn_device_sysdata {
         vertex_hdl_t		vhdl;
 	pciio_provider_t	*pci_provider;
+	pciio_intr_t		intr_handle;
+	struct sn_flush_device_list *dma_flush_list;
+        pciio_piomap_t		pio_map[PCI_ROM_RESOURCE];
 };
 
 struct ioports_to_tlbs_s {