summaryrefslogtreecommitdiffstats
path: root/arch/csky/mm/ioremap.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/csky/mm/ioremap.c')
-rw-r--r--arch/csky/mm/ioremap.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/csky/mm/ioremap.c b/arch/csky/mm/ioremap.c
new file mode 100644
index 000000000..70c8268d3
--- /dev/null
+++ b/arch/csky/mm/ioremap.c
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+
+#include <linux/export.h>
+#include <linux/mm.h>
+#include <linux/io.h>
+
+pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
+ unsigned long size, pgprot_t vma_prot)
+{
+ if (!pfn_valid(pfn)) {
+ return pgprot_noncached(vma_prot);
+ } else if (file->f_flags & O_SYNC) {
+ return pgprot_writecombine(vma_prot);
+ }
+
+ return vma_prot;
+}
+EXPORT_SYMBOL(phys_mem_access_prot);