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-rw-r--r--arch/microblaze/pci/iomap.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/microblaze/pci/iomap.c b/arch/microblaze/pci/iomap.c
new file mode 100644
index 0000000000..b2ee8ace9b
--- /dev/null
+++ b/arch/microblaze/pci/iomap.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ppc64 "iomap" interface implementation.
+ *
+ * (C) Copyright 2004 Linus Torvalds
+ */
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/mm.h>
+#include <linux/export.h>
+#include <linux/io.h>
+#include <asm/pci-bridge.h>
+
+static DEFINE_SPINLOCK(hose_spinlock);
+LIST_HEAD(hose_list);
+
+unsigned long isa_io_base;
+EXPORT_SYMBOL(isa_io_base);
+
+static resource_size_t pcibios_io_size(const struct pci_controller *hose)
+{
+ return resource_size(&hose->io_resource);
+}
+
+int pcibios_vaddr_is_ioport(void __iomem *address)
+{
+ int ret = 0;
+ struct pci_controller *hose;
+ resource_size_t size;
+
+ spin_lock(&hose_spinlock);
+ list_for_each_entry(hose, &hose_list, list_node) {
+ size = pcibios_io_size(hose);
+ if (address >= hose->io_base_virt &&
+ address < (hose->io_base_virt + size)) {
+ ret = 1;
+ break;
+ }
+ }
+ spin_unlock(&hose_spinlock);
+ return ret;
+}
+
+/* Display the domain number in /proc */
+int pci_proc_domain(struct pci_bus *bus)
+{
+ return pci_domain_nr(bus);
+}
+
+void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{
+ if (isa_vaddr_is_ioport(addr))
+ return;
+ if (pcibios_vaddr_is_ioport(addr))
+ return;
+ iounmap(addr);
+}
+EXPORT_SYMBOL(pci_iounmap);