summaryrefslogtreecommitdiffstats
path: root/arch/openrisc/include/asm/io.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/openrisc/include/asm/io.h
parentInitial commit. (diff)
downloadlinux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz
linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/openrisc/include/asm/io.h')
-rw-r--r--arch/openrisc/include/asm/io.h53
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/openrisc/include/asm/io.h b/arch/openrisc/include/asm/io.h
new file mode 100644
index 000000000..6709b28a0
--- /dev/null
+++ b/arch/openrisc/include/asm/io.h
@@ -0,0 +1,53 @@
+/*
+ * OpenRISC Linux
+ *
+ * Linux architectural port borrowing liberally from similar works of
+ * others. All original copyrights apply as per the original source
+ * declaration.
+ *
+ * OpenRISC implementation:
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ * et al.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_OPENRISC_IO_H
+#define __ASM_OPENRISC_IO_H
+
+/*
+ * PCI: can we really do 0 here if we have no port IO?
+ */
+#define IO_SPACE_LIMIT 0
+
+/* OpenRISC has no port IO */
+#define HAVE_ARCH_PIO_SIZE 1
+#define PIO_RESERVED 0X0UL
+#define PIO_OFFSET 0
+#define PIO_MASK 0
+
+#define ioremap_nocache ioremap_nocache
+#include <asm-generic/io.h>
+#include <asm/pgtable.h>
+
+extern void __iomem *__ioremap(phys_addr_t offset, unsigned long size,
+ pgprot_t prot);
+
+static inline void __iomem *ioremap(phys_addr_t offset, size_t size)
+{
+ return __ioremap(offset, size, PAGE_KERNEL);
+}
+
+/* #define _PAGE_CI 0x002 */
+static inline void __iomem *ioremap_nocache(phys_addr_t offset,
+ unsigned long size)
+{
+ return __ioremap(offset, size,
+ __pgprot(pgprot_val(PAGE_KERNEL) | _PAGE_CI));
+}
+
+extern void iounmap(void *addr);
+#endif