105 lines
3.9 KiB
C
105 lines
3.9 KiB
C
|
#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);
|