1 files changed, 82 insertions, 0 deletions

diff --git a/arch/sh/lib/io.c b/arch/sh/lib/io.c
new file mode 100644
index 000000000000..4f54ec43516f
--- /dev/null
+++ b/arch/sh/lib/io.c
@@ -0,0 +1,82 @@
+/*
+ * arch/sh/lib/io.c - SH32 optimized I/O routines
+ *
+ * Copyright (C) 2000  Stuart Menefy
+ * Copyright (C) 2005  Paul Mundt
+ *
+ * Provide real functions which expand to whatever the header file defined.
+ * Also definitions of machine independent IO functions.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/module.h>
+#include <linux/io.h>
+
+void __raw_readsl(unsigned long addr, void *datap, int len)
+{
+        u32 *data;
+
+        for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--)
+                *data++ = ctrl_inl(addr);
+
+        if (likely(len >= (0x20 >> 2))) {
+                int tmp2, tmp3, tmp4, tmp5, tmp6;
+
+                __asm__ __volatile__(
+                        "1:                     \n\t"
+                        "mov.l  @%7, r0         \n\t"
+                        "mov.l  @%7, %2         \n\t"
+#ifdef CONFIG_CPU_SH4
+                        "movca.l r0, @%0        \n\t"
+#else
+                        "mov.l  r0, @%0         \n\t"
+#endif
+                        "mov.l  @%7, %3         \n\t"
+                        "mov.l  @%7, %4         \n\t"
+                        "mov.l  @%7, %5         \n\t"
+                        "mov.l  @%7, %6         \n\t"
+                        "mov.l  @%7, r7         \n\t"
+                        "mov.l  @%7, r0         \n\t"
+                        "mov.l  %2, @(0x04,%0)  \n\t"
+                        "mov    #0x20>>2, %2    \n\t"
+                        "mov.l  %3, @(0x08,%0)  \n\t"
+                        "sub    %2, %1          \n\t"
+                        "mov.l  %4, @(0x0c,%0)  \n\t"
+                        "cmp/hi %1, %2          ! T if 32 > len \n\t"
+                        "mov.l  %5, @(0x10,%0)  \n\t"
+                        "mov.l  %6, @(0x14,%0)  \n\t"
+                        "mov.l  r7, @(0x18,%0)  \n\t"
+                        "mov.l  r0, @(0x1c,%0)  \n\t"
+                        "bf.s   1b              \n\t"
+                        " add   #0x20, %0       \n\t"
+                        : "=&r" (data), "=&r" (len),
+                          "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4),
+                          "=&r" (tmp5), "=&r" (tmp6)
+                        : "r"(addr), "0" (data), "1" (len)
+                        : "r0", "r7", "t", "memory");
+        }
+
+        for (; len != 0; len--)
+                *data++ = ctrl_inl(addr);
+}
+EXPORT_SYMBOL(__raw_readsl);
+
+void __raw_writesl(unsigned long addr, const void *data, int len)
+{
+        if (likely(len != 0)) {
+                int tmp1;
+
+                __asm__ __volatile__ (
+                        "1:                             \n\t"
+                        "mov.l  @%0+, %1        \n\t"
+                        "dt             %3              \n\t"
+                        "bf.s           1b              \n\t"
+                        " mov.l %1, @%4         \n\t"
+                        : "=&r" (data), "=&r" (tmp1)
+                        : "0" (data), "r" (len), "r"(addr)
+                        : "t", "memory");
+        }
+}
+EXPORT_SYMBOL(__raw_writesl);