1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
105 lines
3.9 KiB
C
105 lines
3.9 KiB
C
#define PCIFR(...)
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/************************************************************************/
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/* File iSeries_pci_reset.c created by Allan Trautman on Mar 21 2001. */
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/************************************************************************/
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/* This code supports the pci interface on the IBM iSeries systems. */
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/* Copyright (C) 20yy <Allan H Trautman> <IBM Corp> */
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/* */
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/* This program is free software; you can redistribute it and/or modify */
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/* it under the terms of the GNU General Public License as published by */
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/* the Free Software Foundation; either version 2 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, */
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/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
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/* GNU General Public License for more details. */
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/* */
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/* You should have received a copy of the GNU General Public License */
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/* along with this program; if not, write to the: */
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/* Free Software Foundation, Inc., */
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/* 59 Temple Place, Suite 330, */
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/* Boston, MA 02111-1307 USA */
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/************************************************************************/
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/* Change Activity: */
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/* Created, March 20, 2001 */
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/* April 30, 2001, Added return codes on functions. */
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/* September 10, 2001, Ported to ppc64. */
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/* End Change Activity */
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/************************************************************************/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/irq.h>
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#include <linux/delay.h>
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#include <asm/io.h>
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#include <asm/iSeries/HvCallPci.h>
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#include <asm/iSeries/HvTypes.h>
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#include <asm/iSeries/mf.h>
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#include <asm/pci.h>
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#include <asm/iSeries/iSeries_pci.h>
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#include "pci.h"
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/*
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* Interface to toggle the reset line
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* Time is in .1 seconds, need for seconds.
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*/
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int iSeries_Device_ToggleReset(struct pci_dev *PciDev, int AssertTime,
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int DelayTime)
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{
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unsigned int AssertDelay, WaitDelay;
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struct iSeries_Device_Node *DeviceNode =
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(struct iSeries_Device_Node *)PciDev->sysdata;
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if (DeviceNode == NULL) {
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printk("PCI: Pci Reset Failed, Device Node not found for pci_dev %p\n",
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PciDev);
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return -1;
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}
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/*
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* Set defaults, Assert is .5 second, Wait is 3 seconds.
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*/
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if (AssertTime == 0)
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AssertDelay = 500;
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else
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AssertDelay = AssertTime * 100;
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if (DelayTime == 0)
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WaitDelay = 3000;
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else
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WaitDelay = DelayTime * 100;
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/*
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* Assert reset
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*/
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DeviceNode->ReturnCode = HvCallPci_setSlotReset(ISERIES_BUS(DeviceNode),
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0x00, DeviceNode->AgentId, 1);
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if (DeviceNode->ReturnCode == 0) {
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msleep(AssertDelay); /* Sleep for the time */
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DeviceNode->ReturnCode =
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HvCallPci_setSlotReset(ISERIES_BUS(DeviceNode),
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0x00, DeviceNode->AgentId, 0);
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/*
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* Wait for device to reset
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*/
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msleep(WaitDelay);
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}
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if (DeviceNode->ReturnCode == 0)
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PCIFR("Slot 0x%04X.%02 Reset\n", ISERIES_BUS(DeviceNode),
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DeviceNode->AgentId);
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else {
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printk("PCI: Slot 0x%04X.%02X Reset Failed, RCode: %04X\n",
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ISERIES_BUS(DeviceNode), DeviceNode->AgentId,
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DeviceNode->ReturnCode);
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PCIFR("Slot 0x%04X.%02X Reset Failed, RCode: %04X\n",
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ISERIES_BUS(DeviceNode), DeviceNode->AgentId,
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DeviceNode->ReturnCode);
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}
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return DeviceNode->ReturnCode;
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}
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EXPORT_SYMBOL(iSeries_Device_ToggleReset);
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