patch-2.4.0-test2 linux/arch/ia64/lib/io.c

• Lines: 55
• Date: Thu Jun 22 07:09:44 2000
• Orig file: v2.4.0-test1/linux/arch/ia64/lib/io.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test1/linux/arch/ia64/lib/io.c linux/arch/ia64/lib/io.c
@@ -0,0 +1,54 @@
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+
+/*
+ * Copy data from IO memory space to "real" memory space.
+ * This needs to be optimized.
+ */
+void
+__ia64_memcpy_fromio (void * to, unsigned long from, long count)
+{
+	while (count) {
+		count--;
+		*(char *) to = readb(from);
+		((char *) to)++;
+		from++;
+	}
+}
+
+/*
+ * Copy data from "real" memory space to IO memory space.
+ * This needs to be optimized.
+ */
+void
+__ia64_memcpy_toio (unsigned long to, void * from, long count)
+{
+	while (count) {
+		count--;
+		writeb(*(char *) from, to);
+		((char *) from)++;
+		to++;
+	}
+}
+
+/*
+ * "memset" on IO memory space.
+ * This needs to be optimized.
+ */
+void
+__ia64_memset_c_io (unsigned long dst, unsigned long c, long count)
+{
+	unsigned char ch = (char)(c & 0xff);
+
+	while (count) {
+		count--;
+		writeb(ch, dst);
+		dst++;
+	}
+}
+
+EXPORT_SYMBOL(__ia64_memcpy_fromio);
+EXPORT_SYMBOL(__ia64_memcpy_toio);
+EXPORT_SYMBOL(__ia64_memset_c_io);