patch-2.4.19 linux-2.4.19/arch/ppc64/kernel/iSeries_pci_reset.c

• Lines: 89
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/ppc64/kernel/iSeries_pci_reset.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/ppc64/kernel/iSeries_pci_reset.c linux-2.4.19/arch/ppc64/kernel/iSeries_pci_reset.c
@@ -0,0 +1,88 @@
+/************************************************************************/
+/* File iSeries_pci_reset.c created by Allan Trautman on Mar 21 2001.   */
+/************************************************************************/
+/* This code supports the pci interface on the IBM iSeries systems.     */
+/* Copyright (C) 20yy  <Allan H Trautman> <IBM Corp>                    */
+/*                                                                      */
+/* 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 of the License, 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.,                                      */ 
+/* 59 Temple Place, Suite 330,                                          */ 
+/* Boston, MA  02111-1307  USA                                          */
+/************************************************************************/
+/* Change Activity:                                                     */
+/*   Created, March 20, 2001                                            */
+/*   April 30, 2001, Added return codes on functions.                   */
+/*   September 10, 2001, Ported to ppc64.                               */
+/* End Change Activity                                                  */
+/************************************************************************/
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/irq.h>
+
+#include <asm/io.h>
+#include <asm/init.h>
+#include <asm/iSeries/HvCallPci.h>
+#include <asm/iSeries/HvTypes.h>
+#include <asm/iSeries/mf.h>
+#include <asm/flight_recorder.h>
+#include <asm/pci.h>
+
+#include <asm/iSeries/iSeries_pci.h>
+#include "pci.h"
+
+/************************************************************************/
+/* Interface to toggle the reset line                                   */
+/* Time is in .1 seconds, need for seconds.                             */
+/************************************************************************/
+int  iSeries_Device_ToggleReset(struct pci_dev* PciDev, int AssertTime, int DelayTime)
+{
+	unsigned long AssertDelay, WaitDelay;
+	struct iSeries_Device_Node* DeviceNode = (struct iSeries_Device_Node*)PciDev->sysdata;
+ 	if (DeviceNode == NULL) { 
+		printk("PCI: Pci Reset Failed, Device Node not found for pci_dev %p\n",PciDev);
+		return -1;
+	}
+	/********************************************************************
+	 * Set defaults, Assert is .5 second, Wait is 3 seconds.
+	 ********************************************************************/
+	if (AssertTime == 0) AssertDelay = ( 5 * HZ)/10;
+	else                 AssertDelay = (AssertTime*HZ)/10;
+	if (WaitDelay == 0)  WaitDelay   = (30 * HZ)/10;
+	else                 WaitDelay   = (DelayTime* HZ)/10;
+
+	/********************************************************************
+	 * Assert reset
+	 ********************************************************************/
+	DeviceNode->ReturnCode = HvCallPci_setSlotReset(ISERIES_BUS(DeviceNode),0x00,DeviceNode->AgentId,1);
+	if (DeviceNode->ReturnCode == 0) {
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout(AssertDelay);       /* Sleep for the time     */
+		DeviceNode->ReturnCode = HvCallPci_setSlotReset(ISERIES_BUS(DeviceNode),0x00,DeviceNode->AgentId, 0);
+
+		/***************************************************************
+   		 * Wait for device to reset
+		 ***************************************************************/
+		set_current_state(TASK_UNINTERRUPTIBLE);  
+		schedule_timeout(WaitDelay);
+	}
+	if (DeviceNode->ReturnCode == 0) {
+		PCIFR("Slot 0x%04X.%02 Reset\n",ISERIES_BUS(DeviceNode),DeviceNode->AgentId );
+	} 
+	else {
+		printk("PCI: Slot 0x%04X.%02X Reset Failed, RCode: %04X\n",ISERIES_BUS(DeviceNode),DeviceNode->AgentId,DeviceNode->ReturnCode);
+		PCIFR(      "Slot 0x%04X.%02X Reset Failed, RCode: %04X\n",ISERIES_BUS(DeviceNode),DeviceNode->AgentId,DeviceNode->ReturnCode);
+	}
+	return DeviceNode->ReturnCode;
+}