1 files changed, 104 insertions, 0 deletions

diff --git a/arch/ppc64/kernel/iSeries_pci_reset.c b/arch/ppc64/kernel/iSeries_pci_reset.c
new file mode 100644
index 000000000000..0f785e4584f7
--- /dev/null
+++ b/arch/ppc64/kernel/iSeries_pci_reset.c
@@ -0,0 +1,104 @@
+#define PCIFR(...)
+/************************************************************************/
+/* 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/module.h>
+#include <linux/pci.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/iSeries/HvCallPci.h>
+#include <asm/iSeries/HvTypes.h>
+#include <asm/iSeries/mf.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 int 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 = 500;
+        else
+                AssertDelay = AssertTime * 100;
+
+        if (DelayTime == 0)
+                WaitDelay = 3000;
+        else
+                WaitDelay = DelayTime * 100;
+
+        /*
+         * Assert reset
+         */
+        DeviceNode->ReturnCode = HvCallPci_setSlotReset(ISERIES_BUS(DeviceNode),
+                        0x00, DeviceNode->AgentId, 1);
+        if (DeviceNode->ReturnCode == 0) {
+                msleep(AssertDelay);                    /* Sleep for the time */
+                DeviceNode->ReturnCode =
+                        HvCallPci_setSlotReset(ISERIES_BUS(DeviceNode),
+                                        0x00, DeviceNode->AgentId, 0);
+
+                /*
+                 * Wait for device to reset
+                 */
+                msleep(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;
+}
+EXPORT_SYMBOL(iSeries_Device_ToggleReset);