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#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);
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