patch-2.4.21 linux-2.4.21/arch/parisc/kernel/pdc_chassis.c

• Lines: 206
• Date: 2003-06-13 07:51:31.000000000 -0700
• Orig file: linux-2.4.20/arch/parisc/kernel/pdc_chassis.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/arch/parisc/kernel/pdc_chassis.c linux-2.4.21/arch/parisc/kernel/pdc_chassis.c
@@ -0,0 +1,205 @@
+/*
+ *		arch/parisc/kernel/pdc_chassis.c
+ *
+ * 		Copyright (C) 2002 Laurent Canet <canetl@esiee.fr>
+ *		Copyright (C) 2002 Thibaut Varene <varenet@esiee.fr>
+ *
+ *
+ *		This program is free software; you can redistribute it and/or modify
+ *		it under the terms of the GNU General Public License as published by
+ *		the Free Software Foundation; either version 2, or (at your option)
+ *		any later version.
+ *      
+ *		This program is distributed in the hope that it will be useful,
+ *		but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *		GNU General Public License for more details.
+ *      
+ *		You should have received a copy of the GNU General Public License
+ *		along with this program; if not, write to the Free Software
+ *		Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#undef PDC_CHASSIS_DEBUG
+#ifdef PDC_CHASSIS_DEBUG
+#define DPRINTK(fmt, args...)	printk(fmt, ## args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/notifier.h>
+
+#include <asm/pdc_chassis.h>
+#include <asm/processor.h>
+
+static int pdc_chassis_old = 0;	
+
+
+/** 
+ * pdc_chassis_checkold() - Checks for old PDC_CHASSIS compatibility
+ * @pdc_chassis_old: 1 if old pdc chassis style
+ * 
+ * Currently, only E class and A180 are known to work with this.
+ * Inspired by Christoph Plattner
+ */
+
+static void __init pdc_chassis_checkold(void)
+{
+	switch(CPU_HVERSION) {
+		case 0x480:		/* E25 */
+		case 0x481:		/* E35 */
+		case 0x482:		/* E45 */
+		case 0x483:		/* E55 */
+		case 0x516:		/* A180 */
+			pdc_chassis_old = 1;
+			break;
+
+		default:
+			break;
+	}
+	DPRINTK(KERN_DEBUG "%s: pdc_chassis_checkold(); pdc_chassis_old = %d\n", __FILE__, pdc_chassis_old);
+}
+
+
+/**
+ * pdc_chassis_panic_event() - Called by the panic handler.
+ *
+ * As soon as a panic occurs, we should inform the PDC.
+ */
+
+static int pdc_chassis_panic_event(struct notifier_block *this,
+		        unsigned long event, void *ptr)
+{
+	pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
+		return NOTIFY_DONE;
+}   
+
+
+static struct notifier_block pdc_chassis_panic_block = {
+	notifier_call: pdc_chassis_panic_event,
+	priority: INT_MAX,
+};
+
+
+/**
+ * parisc_reboot_event() - Called by the reboot handler.
+ *
+ * As soon as a reboot occurs, we should inform the PDC.
+ */
+
+static int pdc_chassis_reboot_event(struct notifier_block *this,
+		        unsigned long event, void *ptr)
+{
+	pdc_chassis_send_status(PDC_CHASSIS_DIRECT_SHUTDOWN);
+		return NOTIFY_DONE;
+}   
+
+
+static struct notifier_block pdc_chassis_reboot_block = {
+	notifier_call: pdc_chassis_reboot_event,
+	priority: INT_MAX,
+};
+
+
+/**
+ * parisc_pdc_chassis_init() - Called at boot time.
+ */
+
+void __init parisc_pdc_chassis_init(void)
+{
+	DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__);
+
+	/* initialize panic notifier chain */
+	notifier_chain_register(&panic_notifier_list, &pdc_chassis_panic_block);
+
+	/* initialize reboot notifier chain */
+	register_reboot_notifier(&pdc_chassis_reboot_block);
+
+	/* Check for old LED Panel */
+	pdc_chassis_checkold();
+}
+
+
+/** 
+ * pdc_chassis_send_status() - Sends a predefined message to the chassis,
+ * and changes the front panel LEDs according to the new system state
+ * @retval: PDC call return value.
+ *
+ * Only machines with 64 bits PDC PAT and E-class are supported atm.
+ * 
+ * returns 0 if no error, -1 if no supported PDC is present or invalid message,
+ * else returns the appropriate PDC error code.
+ * 
+ * For a list of predefined messages, see asm-parisc/pdc_chassis.h
+ */
+
+int pdc_chassis_send_status(int message)
+{
+	/* Maybe we should do that in an other way ? */
+	int retval = 0;
+
+	DPRINTK(KERN_DEBUG "%s: pdc_chassis_send_status(%d)\n", __FILE__, message);
+
+#ifdef __LP64__	/* pdc_pat_chassis_send_log is defined only when #ifdef __LP64__ */
+	if (is_pdc_pat()) {
+		switch(message) {
+			case PDC_CHASSIS_DIRECT_BSTART:
+				retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BSTART, PDC_CHASSIS_LSTATE_RUN_NORMAL);
+				break;
+			
+			case PDC_CHASSIS_DIRECT_BCOMPLETE:
+				retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BCOMPLETE, PDC_CHASSIS_LSTATE_RUN_NORMAL);
+				break;
+			
+			case PDC_CHASSIS_DIRECT_SHUTDOWN:
+				retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_SHUTDOWN, PDC_CHASSIS_LSTATE_NONOS);
+				break;
+			
+			case PDC_CHASSIS_DIRECT_PANIC:
+				retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_PANIC, PDC_CHASSIS_LSTATE_RUN_CRASHREC);
+				break;
+		
+			case PDC_CHASSIS_DIRECT_LPMC:
+				retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_LPMC, PDC_CHASSIS_LSTATE_RUN_SYSINT);
+				break;
+
+			case PDC_CHASSIS_DIRECT_HPMC:
+				retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_HPMC, PDC_CHASSIS_LSTATE_RUN_NCRIT);
+				break;
+
+			default:
+				retval = -1;
+		}
+	} else retval = -1;
+#else
+	if (pdc_chassis_old) {
+		switch (message) {
+			case PDC_CHASSIS_DIRECT_BSTART:
+			case PDC_CHASSIS_DIRECT_BCOMPLETE:
+				retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_RUN));
+				break;
+							
+			case PDC_CHASSIS_DIRECT_SHUTDOWN:
+				retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_SHUT));
+				break;
+			
+			case PDC_CHASSIS_DIRECT_HPMC:
+			case PDC_CHASSIS_DIRECT_PANIC:
+				retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_FLT));
+				break;
+		
+			case PDC_CHASSIS_DIRECT_LPMC:
+				retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_WARN));
+				break;
+
+			default:
+				retval = -1;
+		}
+	} else retval = -1;
+#endif
+		
+	return retval;
+}