ac325acd50
The current PCI error recovery system keeps track of the number of PCI card resets, and refuses to bring a card back up if this number is too large. The goal of doing this was to avoid an infinite loop of resets if a card is obviously dead. However, if the failures are rare, but the machine has a high uptime, this mechanism might still be triggered; this is too harsh. This patch will avoids this problem by decrementing the fail count after an hour. Thus, as long as a pci card BSOD's less than 6 times an hour, it will continue to be reset indefinitely. If it's failure rate is greater than that, it will be taken off-line permanently. This patch is larger than it might otherwise be because it changes indentation by removing a pointless while-loop. The while loop is not needed, as the handler is invoked once fo each event (by schedule_work()); the loop is leftover cruft from an earlier implementation. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*
|
|
* eeh_event.h
|
|
*
|
|
* 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
|
|
*
|
|
* Copyright (c) 2005 Linas Vepstas <linas@linas.org>
|
|
*/
|
|
|
|
#ifndef ASM_POWERPC_EEH_EVENT_H
|
|
#define ASM_POWERPC_EEH_EVENT_H
|
|
#ifdef __KERNEL__
|
|
|
|
/** EEH event -- structure holding pci controller data that describes
|
|
* a change in the isolation status of a PCI slot. A pointer
|
|
* to this struct is passed as the data pointer in a notify callback.
|
|
*/
|
|
struct eeh_event {
|
|
struct list_head list;
|
|
struct device_node *dn; /* struct device node */
|
|
struct pci_dev *dev; /* affected device */
|
|
enum pci_channel_state state; /* PCI bus state for the affected device */
|
|
int time_unavail; /* milliseconds until device might be available */
|
|
};
|
|
|
|
/**
|
|
* eeh_send_failure_event - generate a PCI error event
|
|
* @dev pci device
|
|
*
|
|
* This routine builds a PCI error event which will be delivered
|
|
* to all listeners on the eeh_notifier_chain.
|
|
*
|
|
* This routine can be called within an interrupt context;
|
|
* the actual event will be delivered in a normal context
|
|
* (from a workqueue).
|
|
*/
|
|
int eeh_send_failure_event (struct device_node *dn,
|
|
struct pci_dev *dev,
|
|
enum pci_channel_state state,
|
|
int time_unavail);
|
|
|
|
/* Main recovery function */
|
|
struct pci_dn * handle_eeh_events (struct eeh_event *);
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* ASM_POWERPC_EEH_EVENT_H */
|