From 19c9bba94152148523ba0f7ef7cffe3d45656b11 Mon Sep 17 00:00:00 2001
From: Ralf Baechle <ralf@linux-mips.org>
Date: Tue, 29 Apr 1997 21:13:14 +0000
Subject: Import of Linux/MIPS 2.1.36

---
 arch/sparc/kernel/auxio.c | 40 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 38 insertions(+), 2 deletions(-)

(limited to 'arch/sparc/kernel/auxio.c')

diff --git a/arch/sparc/kernel/auxio.c b/arch/sparc/kernel/auxio.c
index cd1fcca02..5835347d1 100644
--- a/arch/sparc/kernel/auxio.c
+++ b/arch/sparc/kernel/auxio.c
@@ -3,6 +3,8 @@
  * 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>
@@ -10,8 +12,7 @@
 /* Probe and map in the Auxiliary I/O register */
 unsigned char *auxio_register;
 
-void
-auxio_probe(void)
+__initfunc(void auxio_probe(void))
 {
 	int node, auxio_nd;
 	struct linux_prom_registers auxregs[1];
@@ -27,6 +28,11 @@ auxio_probe(void)
 		node = prom_getchild(node);
 		auxio_nd = prom_searchsiblings(node, "auxio");
 		if(!auxio_nd) {
+			if(prom_searchsiblings(node, "leds")) {
+				/* VME chassis sun4m machine, no auxio exists. */
+				auxio_register = 0;
+				return;
+			}
 			prom_printf("Cannot find auxio node, cannot continue...\n");
 			prom_halt();
 		}
@@ -45,3 +51,33 @@ auxio_probe(void)
 
 	TURN_ON_LED;
 }
+
+
+/* sun4m power control register (AUXIO2) */
+
+volatile unsigned char * auxio_power_register = NULL;
+
+__initfunc(void auxio_power_probe(void))
+{
+	struct linux_prom_registers regs;
+	int node;
+
+	/* Attempt to find the sun4m power control node. */
+	node = prom_getchild(prom_root_node);
+	node = prom_searchsiblings(node, "obio");
+	node = prom_getchild(node);
+	node = prom_searchsiblings(node, "power");
+	if (node == 0 || node == -1)
+		return;
+
+	/* Map the power control register. */
+	prom_getproperty(node, "reg", (char *)&regs, sizeof(regs));
+	prom_apply_obio_ranges(&regs, 1);
+	auxio_power_register = (volatile unsigned char *)
+		sparc_alloc_io(regs.phys_addr, 0, regs.reg_size,
+			       "power off control", regs.which_io, 0);
+
+	/* Display a quick message on the console. */
+	if (auxio_power_register)
+		printk(KERN_INFO "Power off control detected.\n");
+}
-- 
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