patch-2.4.21 linux-2.4.21/arch/sparc64/kernel/auxio.c

• Lines: 168
• Date: 2003-06-13 07:51:32.000000000 -0700
• Orig file: linux-2.4.20/arch/sparc64/kernel/auxio.c
• Orig date: 2001-04-26 22:17:25.000000000 -0700

diff -urN linux-2.4.20/arch/sparc64/kernel/auxio.c linux-2.4.21/arch/sparc64/kernel/auxio.c
@@ -1,28 +1,114 @@
 /* auxio.c: Probing for the Sparc AUXIO register at boot time.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * Refactoring for unified NCR/PCIO support 2002 Eric Brower (ebrower@usa.net)
  */
 
 #include <linux/config.h>
-#include <linux/stddef.h>
 #include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
 #include <linux/init.h>
-#include <linux/delay.h>
 #include <linux/ioport.h>
 
 #include <asm/oplib.h>
 #include <asm/io.h>
-#include <asm/auxio.h>
 #include <asm/sbus.h>
 #include <asm/ebus.h>
-#include <asm/fhc.h>
-#include <asm/spitfire.h>
-#include <asm/starfire.h>
+#include <asm/auxio.h>
+
+/* This cannot be static, as it is referenced in entry.S */
+unsigned long auxio_register = 0UL;
+
+enum auxio_type {
+	AUXIO_TYPE_NODEV,
+	AUXIO_TYPE_SBUS,
+	AUXIO_TYPE_EBUS
+};
+
+static enum auxio_type auxio_devtype = AUXIO_TYPE_NODEV;
+static spinlock_t auxio_lock = SPIN_LOCK_UNLOCKED;
+
+static void __auxio_sbus_set(u8 bits_on, u8 bits_off)
+{
+	if(auxio_register) {
+		unsigned char regval;
+		unsigned long flags;
+		unsigned char newval;
+
+		spin_lock_irqsave(&auxio_lock, flags);
+
+		regval =  sbus_readb(auxio_register);
+		newval =  regval | bits_on;
+		newval &= ~bits_off;
+		newval &= ~AUXIO_AUX1_MASK;
+		sbus_writeb(newval, auxio_register);
+		
+		spin_unlock_irqrestore(&auxio_lock, flags);
+	}
+}
+
+static void __auxio_ebus_set(u8 bits_on, u8 bits_off)
+{
+	if(auxio_register) {
+		unsigned char regval;
+		unsigned long flags;
+		unsigned char newval;
+
+		spin_lock_irqsave(&auxio_lock, flags);
+
+		regval =  (u8)readl(auxio_register);
+		newval =  regval | bits_on;
+		newval &= ~bits_off;
+		writel((u32)newval, auxio_register);
+
+		spin_unlock_irqrestore(&auxio_lock, flags);
+	}
+}
+
+static inline void __auxio_ebus_set_led(int on)
+{
+	(on) ? __auxio_ebus_set(AUXIO_PCIO_LED, 0) :
+		__auxio_ebus_set(0, AUXIO_PCIO_LED) ;
+}
 
-/* Probe and map in the Auxiliary I/O register */
-unsigned long auxio_register = 0;
+static inline void __auxio_sbus_set_led(int on)
+{
+	(on) ? __auxio_sbus_set(AUXIO_AUX1_LED, 0) :
+		__auxio_sbus_set(0, AUXIO_AUX1_LED) ;
+}
+
+void auxio_set_led(int on)
+{
+	switch(auxio_devtype) {
+	case AUXIO_TYPE_SBUS:
+		__auxio_sbus_set_led(on);
+		break;
+	case AUXIO_TYPE_EBUS:
+		__auxio_ebus_set_led(on);
+		break;
+	default:
+		break;
+	}
+}
+
+static inline void __auxio_sbus_set_lte(int on)
+{
+	(on) ? __auxio_sbus_set(AUXIO_AUX1_LTE, 0) : 
+		__auxio_sbus_set(0, AUXIO_AUX1_LTE) ;
+}
+
+void auxio_set_lte(int on)
+{
+	switch(auxio_devtype) {
+	case AUXIO_TYPE_SBUS:
+		__auxio_sbus_set_lte(on);
+		break;
+	case AUXIO_TYPE_EBUS:
+		/* FALL-THROUGH */
+	default:
+		break;
+	}
+}
 
 void __init auxio_probe(void)
 {
@@ -37,11 +123,15 @@
         }
 
 found_sdev:
-	if (!sdev) {
+	if (sdev) {
+		auxio_devtype  = AUXIO_TYPE_SBUS;
+		auxio_register = sbus_ioremap(&sdev->resource[0], 0,
+		  		sdev->reg_addrs[0].reg_size, "auxiliaryIO");
+	}
 #ifdef CONFIG_PCI
+	else {
 		struct linux_ebus *ebus;
 		struct linux_ebus_device *edev = 0;
-		unsigned long led_auxio;
 
 		for_each_ebus(ebus) {
 			for_each_ebusdev(edev, ebus) {
@@ -50,19 +140,12 @@
 			}
 		}
 	ebus_done:
-
 		if (edev) {
-			led_auxio = edev->resource[0].start;
-			outl(0x01, led_auxio);
-			return;
+			auxio_devtype  = AUXIO_TYPE_EBUS;
+			auxio_register = (unsigned long)
+				ioremap(edev->resource[0].start, sizeof(u32));
 		}
-#endif
-		auxio_register = 0UL;
-		return;
 	}
-
-	/* Map the register both read and write */
-	auxio_register = sbus_ioremap(&sdev->resource[0], 0,
-				      sdev->reg_addrs[0].reg_size, "auxiliaryIO");
-	TURN_ON_LED;
+	auxio_set_led(AUXIO_LED_ON);
+#endif
 }