patch-2.1.19 linux/arch/sparc64/prom/devops.c

• Lines: 42
• Date: Mon Dec 30 11:59:59 1996
• Orig file: v2.1.18/linux/arch/sparc64/prom/devops.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.18/linux/arch/sparc64/prom/devops.c linux/arch/sparc64/prom/devops.c
@@ -0,0 +1,41 @@
+/* $Id: devops.c,v 1.1 1996/12/27 08:49:11 jj Exp $
+ * devops.c:  Device operations using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+/* Open the device described by the string 'dstr'.  Returns the handle
+ * to that device used for subsequent operations on that device.
+ * Returns -1 on failure.
+ */
+int
+prom_devopen(char *dstr)
+{
+	return (*prom_command)("open", P1275_ARG(0,P1275_ARG_IN_STRING)|
+				       P1275_INOUT(1,1),
+				       dstr);
+}
+
+/* Close the device described by device handle 'dhandle'. */
+int
+prom_devclose(int dhandle)
+{
+	(*prom_command)("close", P1275_INOUT(1,0), dhandle);
+	return 0;
+}
+
+/* Seek to specified location described by 'seekhi' and 'seeklo'
+ * for device 'dhandle'.
+ */
+void
+prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
+{
+	(*prom_command)("seek", P1275_INOUT(3,1), dhandle, seekhi, seeklo);
+}