[ACPI] delete old _TRA code formerly used just by IA64. (Bjorn Helgaas)

The current approach is to walk the _CRS in pcibios_scan_root()
using acpi_walk_resources().

drivers/acpi/pci_root.c

@@ -62,8 +62,6 @@ struct acpi_pci_root {
 	acpi_handle		handle;
 	struct acpi_pci_id	id;
 	struct pci_bus		*bus;
-	u64			mem_tra;
-	u64			io_tra;
 };
 
 static LIST_HEAD(acpi_pci_roots);
@@ -115,97 +113,6 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
 	}
 }
 
-void
-acpi_pci_get_translations (
-	struct acpi_pci_id	*id,
-	u64			*mem_tra,
-	u64			*io_tra)
-{
-	struct list_head	*node = NULL;
-	struct acpi_pci_root	*entry;
-
-	/* TBD: Locking */
-	list_for_each(node, &acpi_pci_roots) {
-		entry = list_entry(node, struct acpi_pci_root, node);
-		if ((id->segment == entry->id.segment)
-			&& (id->bus == entry->id.bus)) {
-			*mem_tra = entry->mem_tra;
-			*io_tra = entry->io_tra;
-			return;
-		}
-	}
-
-	*mem_tra = 0;
-	*io_tra = 0;
-}
-
-
-static u64
-acpi_pci_root_bus_tra (
-       struct acpi_resource	*resource,
-       int			type)
-{
-	struct acpi_resource_address16 *address16;
-	struct acpi_resource_address32 *address32;
-	struct acpi_resource_address64 *address64;
-
-	while (1) {
-		switch (resource->id) {
-		case ACPI_RSTYPE_END_TAG:
-			return 0;
-
-		case ACPI_RSTYPE_ADDRESS16:
-			address16 = (struct acpi_resource_address16 *) &resource->data;
-			if (type == address16->resource_type) {
-				return address16->address_translation_offset;
-			}
-			break;
-
-		case ACPI_RSTYPE_ADDRESS32:
-			address32 = (struct acpi_resource_address32 *) &resource->data;
-			if (type == address32->resource_type) {
-				return address32->address_translation_offset;
-			}
-			break;
-
-		case ACPI_RSTYPE_ADDRESS64:
-			address64 = (struct acpi_resource_address64 *) &resource->data;
-			if (type == address64->resource_type) {
-				return address64->address_translation_offset;
-			}
-			break;
-		}
-		resource = ACPI_PTR_ADD (struct acpi_resource,
-				resource, resource->length);
-	}
-
-	return 0;
-}
-
-
-static int
-acpi_pci_evaluate_crs (
-	struct acpi_pci_root	*root)
-{
-	acpi_status		status;
-	struct acpi_buffer	buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-
-	ACPI_FUNCTION_TRACE("acpi_pci_evaluate_crs");
-
-	status = acpi_get_current_resources (root->handle, &buffer);
-	if (ACPI_FAILURE(status))
-		return_VALUE(-ENODEV);
-
-	root->io_tra = acpi_pci_root_bus_tra ((struct acpi_resource *)
-			buffer.pointer, ACPI_IO_RANGE);
-	root->mem_tra = acpi_pci_root_bus_tra ((struct acpi_resource *)
-			buffer.pointer, ACPI_MEMORY_RANGE);
-
-	acpi_os_free(buffer.pointer);
-	return_VALUE(0);
-}
-
-
 static int
 acpi_pci_root_add (
 	struct acpi_device	*device)
@@ -288,10 +195,8 @@ acpi_pci_root_add (
 	root->id.function = device->pnp.bus_address & 0xFFFF;
 
 	/*
-	 * Evaluate _CRS to get root bridge resources
 	 * TBD: Need PCI interface for enumeration/configuration of roots.
 	 */
- 	acpi_pci_evaluate_crs(root);
 
  	/* TBD: Locking */
  	list_add_tail(&root->node, &acpi_pci_roots);

include/acpi/acpi_drivers.h

@@ -53,10 +53,6 @@
 
 #define ACPI_PCI_COMPONENT		0x00400000
 
-/* ACPI PCI Root Bridge (pci_root.c) */
-
-void acpi_pci_get_translations (struct acpi_pci_id* id, u64* mem_tra, u64* io_tra);
-
 /* ACPI PCI Interrupt Link (pci_link.c) */
 
 int acpi_pci_link_check (void);