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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/sh/kernel/iomap.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sh/kernel/iomap.c')
-rw-r--r--arch/sh/kernel/iomap.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/arch/sh/kernel/iomap.c b/arch/sh/kernel/iomap.c
new file mode 100644
index 0000000000..0a0dff4e66
--- /dev/null
+++ b/arch/sh/kernel/iomap.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * arch/sh/kernel/iomap.c
+ *
+ * Copyright (C) 2000 Niibe Yutaka
+ * Copyright (C) 2005 - 2007 Paul Mundt
+ */
+#include <linux/module.h>
+#include <linux/io.h>
+
+unsigned int ioread8(const void __iomem *addr)
+{
+ return readb(addr);
+}
+EXPORT_SYMBOL(ioread8);
+
+unsigned int ioread16(const void __iomem *addr)
+{
+ return readw(addr);
+}
+EXPORT_SYMBOL(ioread16);
+
+unsigned int ioread16be(const void __iomem *addr)
+{
+ return be16_to_cpu(__raw_readw(addr));
+}
+EXPORT_SYMBOL(ioread16be);
+
+unsigned int ioread32(const void __iomem *addr)
+{
+ return readl(addr);
+}
+EXPORT_SYMBOL(ioread32);
+
+unsigned int ioread32be(const void __iomem *addr)
+{
+ return be32_to_cpu(__raw_readl(addr));
+}
+EXPORT_SYMBOL(ioread32be);
+
+void iowrite8(u8 val, void __iomem *addr)
+{
+ writeb(val, addr);
+}
+EXPORT_SYMBOL(iowrite8);
+
+void iowrite16(u16 val, void __iomem *addr)
+{
+ writew(val, addr);
+}
+EXPORT_SYMBOL(iowrite16);
+
+void iowrite16be(u16 val, void __iomem *addr)
+{
+ __raw_writew(cpu_to_be16(val), addr);
+}
+EXPORT_SYMBOL(iowrite16be);
+
+void iowrite32(u32 val, void __iomem *addr)
+{
+ writel(val, addr);
+}
+EXPORT_SYMBOL(iowrite32);
+
+void iowrite32be(u32 val, void __iomem *addr)
+{
+ __raw_writel(cpu_to_be32(val), addr);
+}
+EXPORT_SYMBOL(iowrite32be);
+
+/*
+ * These are the "repeat MMIO read/write" functions.
+ * Note the "__raw" accesses, since we don't want to
+ * convert to CPU byte order. We write in "IO byte
+ * order" (we also don't have IO barriers).
+ */
+static inline void mmio_insb(const void __iomem *addr, u8 *dst, int count)
+{
+ while (--count >= 0) {
+ u8 data = __raw_readb(addr);
+ *dst = data;
+ dst++;
+ }
+}
+
+static inline void mmio_insw(const void __iomem *addr, u16 *dst, int count)
+{
+ while (--count >= 0) {
+ u16 data = __raw_readw(addr);
+ *dst = data;
+ dst++;
+ }
+}
+
+static inline void mmio_insl(const void __iomem *addr, u32 *dst, int count)
+{
+ while (--count >= 0) {
+ u32 data = __raw_readl(addr);
+ *dst = data;
+ dst++;
+ }
+}
+
+static inline void mmio_outsb(void __iomem *addr, const u8 *src, int count)
+{
+ while (--count >= 0) {
+ __raw_writeb(*src, addr);
+ src++;
+ }
+}
+
+static inline void mmio_outsw(void __iomem *addr, const u16 *src, int count)
+{
+ while (--count >= 0) {
+ __raw_writew(*src, addr);
+ src++;
+ }
+}
+
+static inline void mmio_outsl(void __iomem *addr, const u32 *src, int count)
+{
+ while (--count >= 0) {
+ __raw_writel(*src, addr);
+ src++;
+ }
+}
+
+void ioread8_rep(const void __iomem *addr, void *dst, unsigned long count)
+{
+ mmio_insb(addr, dst, count);
+}
+EXPORT_SYMBOL(ioread8_rep);
+
+void ioread16_rep(const void __iomem *addr, void *dst, unsigned long count)
+{
+ mmio_insw(addr, dst, count);
+}
+EXPORT_SYMBOL(ioread16_rep);
+
+void ioread32_rep(const void __iomem *addr, void *dst, unsigned long count)
+{
+ mmio_insl(addr, dst, count);
+}
+EXPORT_SYMBOL(ioread32_rep);
+
+void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
+{
+ mmio_outsb(addr, src, count);
+}
+EXPORT_SYMBOL(iowrite8_rep);
+
+void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
+{
+ mmio_outsw(addr, src, count);
+}
+EXPORT_SYMBOL(iowrite16_rep);
+
+void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
+{
+ mmio_outsl(addr, src, count);
+}
+EXPORT_SYMBOL(iowrite32_rep);