1 files changed, 42 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/auxio.c b/arch/sparc64/kernel/auxio.c
new file mode 100644
index 000000000..6c3ff9174
--- /dev/null
+++ b/arch/sparc64/kernel/auxio.c
@@ -0,0 +1,42 @@
+/* auxio.c: Probing for the Sparc AUXIO register at boot time.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <asm/oplib.h>
+#include <asm/io.h>
+#include <asm/auxio.h>
+#include <asm/sbus.h>
+
+/* Probe and map in the Auxiliary I/O register */
+unsigned char *auxio_register;
+
+__initfunc(void auxio_probe(void))
+{
+        struct linux_sbus *bus;
+        struct linux_sbus_device *sdev = 0;
+	struct linux_prom_registers auxregs[1];
+
+        for_each_sbus(bus) {
+                for_each_sbusdev(sdev, bus) {
+                        if(!strcmp(sdev->prom_name, "auxio")) {
+				break;
+                        }
+                }
+        }
+
+	if (!sdev) {
+		prom_printf("Cannot find auxio node, cannot continue...\n");
+		prom_halt();
+	}
+	prom_getproperty(sdev->prom_node, "reg", (char *) auxregs, sizeof(auxregs));
+	prom_apply_sbus_ranges(sdev->my_bus, auxregs, 0x1, sdev);
+	/* Map the register both read and write */
+	auxio_register = (unsigned char *) sparc_alloc_io(auxregs[0].phys_addr, 0,
+							  auxregs[0].reg_size,
+							  "auxiliaryIO",
+							  auxregs[0].which_io, 0x0);
+	TURN_ON_LED;
+}