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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | #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 <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 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; } EXPORT_SYMBOL(iSeries_Device_ToggleReset); |